/* roulang page: index */
/* ==================== Foundation 覆盖 ==================== */
html,body{font-family:inherit;}
body{background:var(--bg-0);color:var(--t-1);}
h1,h2,h3,h4,h5,h6{font-family:inherit;color:var(--t-1);margin:0;font-weight:700;letter-spacing:-0.01em;}
p{margin:0;line-height:1.85;}
a{color:var(--t-2);text-decoration:none;transition:color var(--t-fast) var(--ease);}
a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;border:0;background:none;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:15px;}
img{max-width:100%;display:block;}
hr{border:0;border-top:1px solid var(--line);margin:24px 0;}
.button{
  font-family:inherit;font-size:15px;font-weight:600;border-radius:var(--r-pill);
  background:transparent;color:var(--t-1);border:1px solid transparent;
  padding:12px 24px;transition:all var(--t-mid) var(--ease);
}
.card{background:transparent;border:0;padding:0;margin:0;box-shadow:none;}
.top-bar{background:transparent;padding:0;height:auto;}
.top-bar ul{background:transparent;}
.accordion{border:0;background:transparent;margin:0;}
.accordion-item{border:0;background:transparent;}
.accordion-title{border:0;background:transparent;padding:0;color:var(--t-1);font-size:16px;}
.accordion-title:hover,.accordion-title:focus{background:transparent;}
.accordion-content{border:0;background:transparent;padding:0;color:var(--t-2);}
.tabs{border:0;background:transparent;margin:0;}
.tabs-title>a{color:var(--t-2);background:transparent;padding:0;font-size:16px;}
.tabs-title>a:focus,.tabs-title>a[aria-selected='true']{background:transparent;color:var(--c-primary);}
table{border-collapse:collapse;width:100%;}
.grid-container{padding-left:24px;padding-right:24px;}
.grid-padding-x{margin-left:-12px;margin-right:-12px;}
.grid-padding-x>.cell{padding-left:12px;padding-right:12px;min-width:0;}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{margin-left:12px;margin-right:12px;}
.grid-x>.cell{min-width:0;}

/* ==================== 设计变量 ==================== */
:root{
  --bg-0:#05070D;
  --bg-1:#0A0F1A;
  --bg-2:#101827;
  --c-primary:#2FD4F0;
  --c-primary-2:#4CE0B3;
  --c-accent:#7C6CFF;
  --c-highlight:#FFB454;
  --t-1:#E9F2FA;
  --t-2:#A5B6C9;
  --t-3:#6B7C93;
  --line:rgba(120,190,230,0.14);
  --line-strong:rgba(120,190,230,0.28);
  --glass:rgba(255,255,255,0.055);
  --glass-2:rgba(255,255,255,0.085);
  --r-xl:24px;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-xs:8px;
  --r-pill:999px;
  --shadow:0 18px 40px -18px rgba(0,0,0,0.7);
  --shadow-hover:0 26px 54px -20px rgba(0,0,0,0.8);
  --glow:0 0 0 1px rgba(47,212,240,0.25),0 0 28px -6px rgba(47,212,240,0.45);
  --glow-strong:0 0 0 1px rgba(47,212,240,0.4),0 0 36px -4px rgba(47,212,240,0.6);
  --ease:cubic-bezier(0.22,0.61,0.36,1);
  --t-fast:200ms;
  --t-mid:240ms;
  --t-slow:600ms;
  --container:1240px;
  --nav-h:68px;
  --topbar-h:36px;
}

/* ==================== 基础 ==================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-size:16px;
  line-height:1.7;
  font-family:"Noto Sans SC","HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  overflow-x:hidden;
  padding-bottom:0;
}
img{max-width:100%;height:auto;}
::selection{background:rgba(47,212,240,0.28);color:#fff;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ==================== 容器 ==================== */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{
  position:relative;
  padding:96px 0;
}
.section--alt{background:var(--bg-1);}
.section__spot{
  position:absolute;
  width:760px;height:760px;
  border-radius:50%;
  pointer-events:none;
  filter:blur(10px);
  opacity:.5;
  z-index:0;
}
.spot--primary{background:radial-gradient(circle,rgba(47,212,240,0.16),transparent 62%);top:-260px;left:-220px;}
.spot--accent{background:radial-gradient(circle,rgba(124,108,255,0.14),transparent 62%);bottom:-300px;right:-260px;}
.section>.container{position:relative;z-index:1;}
.section-head{margin-bottom:48px;max-width:720px;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--c-primary);
  background:rgba(47,212,240,0.12);
  border:1px solid rgba(47,212,240,0.24);
  border-radius:var(--r-pill);
  padding:5px 12px;margin-bottom:16px;
}
.section-title{font-size:28px;line-height:1.45;font-weight:800;}
.section-desc{margin-top:14px;color:var(--t-2);font-size:16px;max-width:640px;}

/* ==================== 徽章与按钮 ==================== */
.badge{
  display:inline-block;font-size:12px;line-height:1;
  padding:6px 10px;border-radius:var(--r-xs);
  background:rgba(47,212,240,0.12);color:var(--c-primary);
  border:1px solid rgba(47,212,240,0.2);
}
.badge--amber{background:rgba(255,180,84,0.14);color:var(--c-highlight);border-color:rgba(255,180,84,0.28);}
.badge--green{background:rgba(76,224,179,0.12);color:var(--c-primary-2);border-color:rgba(76,224,179,0.24);}

.btn{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;border-radius:var(--r-pill);
  transition:transform var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease),background var(--t-mid) var(--ease),color var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
  white-space:nowrap;
}
.btn::after{
  content:"";position:absolute;top:0;left:-140%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,0.42),transparent);
  transform:skewX(-18deg);
  transition:left var(--t-slow) var(--ease);
}
.btn:hover::after{left:150%;}
.btn-primary{
  background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));
  color:#05202A;
  box-shadow:var(--glow);
}
.btn-primary:hover{color:#05202A;transform:translateY(-2px);box-shadow:var(--glow-strong);text-decoration:none;}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,212,240,0.3);}
.btn-outline{
  background:transparent;color:var(--c-primary);
  border:1px solid rgba(47,212,240,0.45);
}
.btn-outline:hover{color:var(--c-primary);background:rgba(47,212,240,0.1);transform:translateY(-2px);text-decoration:none;}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;color:var(--t-1);padding:12px 4px;
}
.btn-ghost i{font-style:normal;transition:transform var(--t-mid) var(--ease);display:inline-block;}
.btn-ghost:hover{color:var(--c-primary);text-decoration:none;}
.btn-ghost:hover i{transform:translateX(4px);}
.btn-block{width:100%;}

/* ==================== 顶部信息条 ==================== */
.topbar{
  height:var(--topbar-h);
  background:#03050A;
  border-bottom:1px solid rgba(120,190,230,0.08);
  font-size:12px;color:var(--t-3);
  position:relative;z-index:60;
}
.topbar__inner{
  height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.topbar__domain{font-size:12px;color:var(--t-3);letter-spacing:.02em;}
.topbar__mid{
  flex:1;text-align:center;font-size:12px;color:var(--t-3);
  overflow:hidden;white-space:nowrap;text-overflow:ellipsis;
}
.topbar__links{display:flex;align-items:center;gap:18px;}
.topbar__links a{font-size:13px;color:var(--t-2);}
.topbar__links a:hover{color:var(--c-primary);}

/* ==================== 导航 ==================== */
.site-header{
  position:sticky;top:0;z-index:50;
  height:var(--nav-h);
  background:rgba(5,7,13,0.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(120,190,230,0.08);
  transition:background var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,10,18,0.86);
  border-bottom-color:rgba(120,190,230,0.18);
  box-shadow:0 12px 30px -22px rgba(0,0,0,0.9);
}
.site-header.is-scrolled::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,212,240,0.55),transparent);
}
.nav__inner{
  height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--t-1);}
.logo:hover{text-decoration:none;color:var(--t-1);}
.logo__mark{width:34px;height:34px;flex:none;}
.logo__mark circle,.logo__mark path{stroke:url(#logoGrad);}
.logo__text{display:flex;flex-direction:column;line-height:1.15;}
.logo__name{font-size:16px;font-weight:800;letter-spacing:-0.01em;color:var(--t-1);}
.logo__sub{font-size:11px;color:var(--t-3);letter-spacing:.06em;}
.nav__menu{display:flex;align-items:center;gap:4px;}
.nav__link{
  position:relative;display:inline-block;
  padding:10px 14px;font-size:15px;color:var(--t-2);border-radius:10px;
  transition:color var(--t-fast) var(--ease),background var(--t-fast) var(--ease);
}
.nav__link:hover{color:var(--t-1);background:rgba(255,255,255,0.05);text-decoration:none;}
.nav__link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--c-primary);opacity:0;box-shadow:0 0 10px rgba(47,212,240,0.8);
  transition:opacity var(--t-mid) var(--ease);
}
.nav__link.is-active{color:var(--t-1);}
.nav__link.is-active::after{opacity:1;}
.nav__right{display:flex;align-items:center;gap:12px;}
.nav__cta{padding:11px 22px;font-size:14px;}
.nav__burger{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--glass);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav__burger span{display:block;width:18px;height:1.8px;background:var(--t-1);border-radius:2px;transition:transform var(--t-mid) var(--ease),opacity var(--t-mid) var(--ease);}
.nav__burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav__burger.is-open span:nth-child(2){opacity:0;}
.nav__burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* 移动面板 */
.mobile-panel{
  position:fixed;inset:0;z-index:70;
  background:rgba(5,8,14,0.94);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  transform:translateX(100%);
  transition:transform var(--t-mid) var(--ease);
  display:flex;flex-direction:column;
  padding:20px;
}
.mobile-panel.is-open{transform:translateX(0);}
.mobile-panel__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.mobile-panel__close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--glass);color:var(--t-1);font-size:18px;line-height:1;}
.mobile-panel__nav{flex:1;overflow-y:auto;}
.mobile-panel__link{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;padding:0 14px;border-radius:12px;
  font-size:16px;color:var(--t-1);
  border-bottom:1px solid rgba(120,190,230,0.08);
}
.mobile-panel__link:hover{background:rgba(255,255,255,0.05);text-decoration:none;color:var(--c-primary);}
.mobile-panel__link i{font-style:normal;color:var(--t-3);}
.mobile-panel__foot{padding-top:16px;}

/* ==================== Hero ==================== */
.hero{
  position:relative;
  min-height:680px;
  display:flex;align-items:center;
  overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    repeating-linear-gradient(115deg,rgba(120,190,230,0.06) 0 1px,transparent 1px 24px),
    radial-gradient(rgba(233,242,250,0.035) 1px,transparent 1px),
    radial-gradient(circle at 78% 22%,rgba(47,212,240,0.18),transparent 58%),
    radial-gradient(circle at 12% 88%,rgba(124,108,255,0.14),transparent 60%),
    linear-gradient(180deg,rgba(5,7,13,0.86),rgba(5,7,13,0.95));
  background-size:auto,3px 3px,auto,auto,auto;
  pointer-events:none;
}
.hero__inner{position:relative;z-index:1;padding:96px 0 84px;}
.hero__grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,0.95fr);gap:56px;align-items:center;}
.hero h1{
  font-size:56px;line-height:1.16;font-weight:800;letter-spacing:-0.02em;
  max-width:640px;
}
.hero__sub{
  margin-top:20px;font-size:17px;color:var(--t-2);max-width:540px;line-height:1.9;
}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero__stats{
  display:flex;flex-wrap:wrap;gap:40px;margin-top:44px;
  padding-top:28px;border-top:1px solid var(--line);
}
.stat__num{font-size:28px;font-weight:800;color:var(--t-1);line-height:1.25;font-variant-numeric:tabular-nums;}
.stat__num em{font-style:normal;font-size:14px;color:var(--c-primary-2);margin-left:4px;font-weight:600;}
.stat__label{margin-top:6px;font-size:12px;color:var(--t-3);}

.hero__panel{position:relative;}
.glass-panel{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,0.08);
  padding:20px;
}
.hero__panel .thumb{
  position:relative;border-radius:var(--r-md);overflow:hidden;
  border:1px solid rgba(120,190,230,0.18);
  aspect-ratio:16/10;background:var(--bg-2);
}
.hero__panel .thumb img{width:100%;height:100%;object-fit:cover;}
.hero__panel .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,13,0.1),rgba(5,7,13,0.75));
}
.hero__panel-text{padding:16px 4px 4px;}
.hero__panel-text p{font-size:14px;color:var(--t-2);margin-top:8px;}
.hero__chip{
  position:absolute;right:-16px;bottom:-22px;
  padding:14px 18px;border-radius:var(--r-md);
  background:rgba(10,15,26,0.92);
  border:1px solid rgba(47,212,240,0.3);
  box-shadow:var(--glow);
  backdrop-filter:blur(14px);
}
.hero__chip strong{display:block;font-size:20px;color:var(--c-primary-2);font-variant-numeric:tabular-nums;}
.hero__chip span{font-size:12px;color:var(--t-3);}

/* ==================== 锚点条 ==================== */
.anchor-bar{
  position:sticky;top:var(--nav-h);z-index:40;
  background:rgba(6,10,18,0.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(120,190,230,0.1);
}
.anchor-bar__inner{
  display:flex;gap:8px;padding:12px 0;
  overflow-x:auto;scrollbar-width:none;
}
.anchor-bar__inner::-webkit-scrollbar{display:none;}
.anchor{
  flex:none;font-size:14px;color:var(--t-2);
  padding:9px 18px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--glass);
  transition:all var(--t-fast) var(--ease);
}
.anchor:hover{color:var(--t-1);border-color:var(--line-strong);text-decoration:none;}
.anchor.is-current{
  color:#05202A;background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));
  border-color:transparent;box-shadow:var(--glow);
}

/* ==================== 卖点区 ==================== */
.value__grid{display:grid;grid-template-columns:minmax(0,0.8fr) minmax(0,1.2fr);gap:64px;}
.value__aside{position:sticky;top:calc(var(--nav-h) + 72px);align-self:start;}
.value__list{display:flex;flex-direction:column;}
.value__item{
  padding:32px 0;
  border-bottom:1px solid var(--line);
}
.value__item:nth-child(odd){padding-left:0;}
.value__item:nth-child(even){padding-left:32px;}
.value__num{
  font-size:44px;font-weight:800;line-height:1;
  color:rgba(233,242,250,0.13);
  font-variant-numeric:tabular-nums;
  letter-spacing:-0.02em;
}
.value__item h3{font-size:20px;margin-top:12px;}
.value__item p{margin-top:10px;color:var(--t-2);font-size:15px;max-width:520px;}
.value__figure{
  margin-top:8px;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:16/9;background:var(--bg-2);
}
.value__figure img{width:100%;height:100%;object-fit:cover;}

/* ==================== 演示区 ==================== */
.demo__panel{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  padding:24px;
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,0.07);
}
.demo__grid{display:grid;grid-template-columns:minmax(0,0.72fr) minmax(0,1.28fr);gap:24px;}
.demo__steps{display:flex;flex-direction:column;gap:8px;}
.demo__step{
  position:relative;text-align:left;width:100%;
  padding:16px 18px 16px 22px;border-radius:var(--r-md);
  border:1px solid transparent;background:transparent;
  transition:background var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
}
.demo__step::before{
  content:"";position:absolute;left:8px;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:var(--c-primary);opacity:0;
  box-shadow:0 0 12px rgba(47,212,240,0.85);
  transition:opacity var(--t-mid) var(--ease);
}
.demo__step:hover{background:rgba(255,255,255,0.04);}
.demo__step.is-active{background:rgba(47,212,240,0.08);border-color:rgba(47,212,240,0.28);}
.demo__step.is-active::before{opacity:1;}
.demo__step span{
  display:block;font-size:12px;color:var(--c-primary);letter-spacing:.08em;
  font-variant-numeric:tabular-nums;
}
.demo__step h3{font-size:16px;margin-top:6px;font-weight:700;}
.demo__step p{font-size:13px;color:var(--t-3);margin-top:6px;}
.demo__stage{position:relative;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);background:var(--bg-2);aspect-ratio:16/9;}
.demo__stage img{width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity var(--t-mid) var(--ease);position:absolute;inset:0;}
.demo__stage img.is-visible{opacity:1;}
.demo__caption{margin-top:16px;font-size:14px;color:var(--t-2);}

/* ==================== 证据区 ==================== */
.proof__band{
  position:absolute;left:0;right:0;top:38%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,212,240,0.24),transparent);
  pointer-events:none;
}
.proof__grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:24px;}
.proof__main{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  border:1px solid var(--line);background:var(--glass);
  backdrop-filter:blur(16px);box-shadow:var(--shadow);
}
.proof__main img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.proof__main-body{padding:24px;}
.proof__main-body h3{font-size:20px;}
.proof__main-body p{margin-top:10px;color:var(--t-2);font-size:15px;}
.proof__side{display:grid;grid-template-rows:auto auto 1fr;gap:24px;}
.mini-card{
  padding:22px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(16px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,0.06);
}
.mini-card strong{display:block;font-size:26px;font-weight:800;color:var(--c-primary-2);font-variant-numeric:tabular-nums;}
.mini-card span{display:block;margin-top:6px;font-size:12px;color:var(--t-3);}
.quote{
  padding:22px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(16px);
  display:flex;flex-direction:column;justify-content:center;
}
.quote__mark{font-size:32px;line-height:1;color:var(--c-primary);opacity:.7;}
.quote p{font-size:15px;color:var(--t-1);margin-top:8px;}
.quote cite{display:block;margin-top:12px;font-size:12px;color:var(--t-3);font-style:normal;}

/* ==================== 档位区 ==================== */
.plans{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:center;}
.plan{
  position:relative;
  padding:28px 24px;border-radius:var(--r-xl);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(16px);
  box-shadow:var(--shadow);
  transform:scale(0.96);
  opacity:.9;
  transition:transform var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease),opacity var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
}
.plan:hover{transform:scale(1);opacity:1;border-color:var(--line-strong);box-shadow:var(--shadow-hover);}
.plan--feature{
  transform:scale(1.06);
  opacity:1;
  border-color:rgba(47,212,240,0.34);
  box-shadow:var(--glow),var(--shadow);
  z-index:2;
}
.plan--feature:hover{transform:scale(1.08);box-shadow:var(--glow-strong),var(--shadow-hover);}
.plan__flag{
  position:absolute;top:-12px;left:24px;
  font-size:12px;padding:6px 12px;border-radius:var(--r-xs);
  background:rgba(255,180,84,0.16);color:var(--c-highlight);
  border:1px solid rgba(255,180,84,0.3);
}
.plan h3{font-size:20px;}
.plan__tag{margin-top:8px;font-size:14px;color:var(--t-2);}
.plan__list{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.plan__list li{display:flex;gap:10px;font-size:14px;color:var(--t-2);}
.plan__list li i{
  flex:none;width:18px;height:18px;border-radius:6px;margin-top:3px;
  background:rgba(76,224,179,0.14);border:1px solid rgba(76,224,179,0.3);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:11px;color:var(--c-primary-2);font-style:normal;
}
.plan__foot{margin-top:26px;}
.plan__note{margin-top:24px;text-align:center;font-size:13px;color:var(--t-3);}

/* ==================== 资讯区 ==================== */
.news__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.news__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.news-card{
  display:flex;flex-direction:column;
  border-radius:var(--r-lg);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(16px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,0.06);
  transition:transform var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease);
}
.news-card:hover{
  transform:translateY(-4px);
  border-color:rgba(47,212,240,0.36);
  box-shadow:var(--glow),var(--shadow-hover);
  text-decoration:none;
}
.news-thumb{position:relative;aspect-ratio:16/9;background:var(--bg-2);overflow:hidden;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-slow) var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(5,7,13,0.72));
}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.news-title{
  margin-top:12px;font-size:17px;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-desc{
  margin-top:10px;font-size:14px;color:var(--t-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  flex:1;
}
.news-foot{
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--t-3);
}
.news-more{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);}
.news-more i{font-style:normal;transition:transform var(--t-mid) var(--ease);}
.news-card:hover .news-more i{transform:translateX(3px);}
.empty-card{
  grid-column:1/-1;
  padding:56px 24px;text-align:center;
  border-radius:var(--r-xl);
  background:var(--glass);border:1px dashed var(--line-strong);
  backdrop-filter:blur(16px);
}
.empty-card__icon{
  width:48px;height:48px;margin:0 auto 16px;border-radius:14px;
  border:1px solid var(--line-strong);background:rgba(47,212,240,0.1);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-size:20px;
}
.empty-card p{color:var(--t-2);font-size:15px;}
.empty-card .btn{margin-top:20px;}

/* ==================== FAQ ==================== */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;margin:0 auto;}
.faq-item{
  border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(16px);
  transition:border-color var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease);
}
.faq-item.is-open{border-color:rgba(47,212,240,0.34);box-shadow:var(--glow);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  padding:20px 22px;text-align:left;color:var(--t-1);
}
.faq-q .faq-idx{font-size:12px;color:var(--c-primary);font-variant-numeric:tabular-nums;flex:none;width:22px;}
.faq-q h3{font-size:16px;font-weight:700;flex:1;}
.faq-q .faq-arrow{
  flex:none;color:var(--t-3);font-size:14px;transition:transform var(--t-mid) var(--ease),color var(--t-mid) var(--ease);
}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);color:var(--c-primary);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height var(--t-mid) var(--ease);
}
.faq-a p{padding:0 22px 22px 60px;font-size:15px;line-height:1.85;color:var(--t-2);}
@media (max-width:520px){.faq-a p{padding-left:22px;}}

/* ==================== CTA 带 ==================== */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);
  border:1px solid var(--line-strong);
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  padding:44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(5,7,13,0.9),rgba(10,15,26,0.78)),
             radial-gradient(circle at 82% 20%,rgba(47,212,240,0.18),transparent 58%);
}
.cta-band>div{position:relative;z-index:1;}
.cta-band h2{font-size:24px;}
.cta-band p{margin-top:10px;color:var(--t-2);font-size:15px;max-width:560px;}
.cta-band__actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ==================== 页脚 ==================== */
.site-footer{
  position:relative;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;left:50%;top:-160px;transform:translateX(-50%);
  width:620px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,212,240,0.12),transparent 65%);
  pointer-events:none;
}
.footer__grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;
}
.footer__brand-desc{margin-top:16px;font-size:14px;color:var(--t-2);max-width:320px;}
.footer__social{display:flex;gap:10px;margin-top:20px;}
.footer__social a{
  width:36px;height:36px;border-radius:10px;
  border:1px solid var(--line);background:var(--glass);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--t-2);
}
.footer__social a:hover{color:var(--c-primary);border-color:rgba(47,212,240,0.4);text-decoration:none;}
.footer h3{font-size:14px;letter-spacing:.04em;color:var(--t-1);margin-bottom:18px;}
.footer__links{display:flex;flex-direction:column;gap:12px;}
.footer__links a{font-size:14px;color:var(--t-2);}
.footer__links a:hover{color:var(--c-primary);}
.footer__form{display:flex;flex-direction:column;gap:12px;}
.footer__form input{
  width:100%;padding:12px 16px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--line);color:var(--t-1);
  transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
.footer__form input::placeholder{color:var(--t-3);}
.footer__form input:focus{
  outline:none;border-color:rgba(47,212,240,0.5);
  box-shadow:0 0 0 3px rgba(47,212,240,0.12);
}
.footer__form .hint{font-size:12px;color:var(--t-3);}
.footer__bottom{
  position:relative;z-index:1;
  margin-top:56px;padding:22px 0;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:var(--t-3);flex-wrap:wrap;
}
.footer__bottom a{color:var(--t-3);}
.footer__bottom a:hover{color:var(--c-primary);}

/* ==================== 浮动 CTA ==================== */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:45;
  display:flex;align-items:center;gap:8px;
  padding:10px 12px 10px 22px;height:56px;
  border-radius:var(--r-pill);
  background:rgba(10,15,26,0.9);
  border:1px solid rgba(47,212,240,0.3);
  backdrop-filter:blur(18px);
  box-shadow:var(--glow);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity var(--t-mid) var(--ease),transform var(--t-mid) var(--ease);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta__label{font-size:14px;font-weight:600;color:var(--t-1);}
.float-cta__label:hover{text-decoration:none;color:var(--c-primary);}
.float-cta__icon{
  width:36px;height:36px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));
  color:#05202A;font-size:15px;
}
.float-cta__icon:hover{text-decoration:none;color:#05202A;}

/* ==================== 工具类 ==================== */
.text-center{text-align:center;}
.mt-0{margin-top:0;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ==================== 响应式 ==================== */
@media (min-width:1440px){
  .section__spot{width:900px;height:900px;}
}
@media (max-width:1199px){
  .hero h1{font-size:48px;}
  .value__grid{gap:44px;}
  .footer__grid{grid-template-columns:1.3fr 1fr 1fr;gap:32px;}
  .footer__col--form{grid-column:1/-1;}
}
@media (max-width:1023px){
  .hero{min-height:600px;}
  .hero__grid{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:44px;max-width:none;}
  .hero__panel{max-width:560px;}
  .hero__chip{right:0;bottom:-18px;}
  .value__grid{grid-template-columns:1fr;gap:32px;}
  .value__aside{position:static;}
  .value__item:nth-child(even){padding-left:24px;}
  .proof__grid{grid-template-columns:1fr;}
  .plans{grid-template-columns:1fr;gap:20px;}
  .plan,.plan--feature{transform:none;}
  .plan--feature:hover{transform:translateY(-4px);}
  .news__grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
}
@media (max-width:767px){
  :root{--nav-h:56px;--topbar-h:32px;}
  body{font-size:15px;}
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:56px 0;}
  .topbar__mid{display:none;}
  .topbar{font-size:11px;}
  .topbar__links a{font-size:12px;}
  .nav__menu{display:none;}
  .nav__cta{display:none;}
  .nav__burger{display:flex;}
  .logo__mark{width:30px;height:30px;}
  .logo__name{font-size:15px;}
  .logo__sub{display:none;}
  .hero{min-height:520px;}
  .hero__inner{padding:64px 0 56px;}
  .hero h1{font-size:34px;}
  .hero__sub{font-size:15px;margin-top:16px;}
  .hero__stats{gap:24px;margin-top:32px;}
  .stat__num{font-size:22px;}
  .hero__chip{position:static;display:inline-block;margin-top:16px;}
  .anchor-bar{top:var(--nav-h);}
  .anchor{font-size:13px;padding:8px 14px;}
  .section-title{font-size:22px;}
  .section-desc{font-size:15px;}
  .value__num{font-size:34px;}
  .value__item:nth-child(even){padding-left:0;}
  .demo__grid{grid-template-columns:1fr;}
  .demo__steps{flex-direction:row;overflow-x:auto;padding-bottom:6px;}
  .demo__step{min-width:220px;}
  .demo__step::before{left:6px;}
  .news__head{flex-direction:column;align-items:flex-start;gap:12px;}
  .news__grid{grid-template-columns:1fr;}
  .cta-band{padding:28px 20px;}
  .cta-band h2{font-size:20px;}
  .footer__grid{grid-template-columns:1fr;gap:32px;}
  .footer__col--form{grid-column:auto;}
  .site-footer{padding-top:56px;padding-bottom:64px;}
  .float-cta{
    left:0;right:0;bottom:0;height:56px;border-radius:0;
    padding:0 16px calc(0px + env(safe-area-inset-bottom));
    justify-content:space-between;
    border-left:0;border-right:0;border-bottom:0;
    background:rgba(8,12,20,0.96);
    box-shadow:0 -12px 30px -18px rgba(0,0,0,0.9);
  }
  .float-cta.is-visible{transform:translateY(0);}
  body{padding-bottom:56px;}
}
@media (max-width:520px){
  .hero h1{font-size:29px;}
  .hero__cta .btn{width:100%;}
  .hero__stats{gap:18px;}
  .value__figure{aspect-ratio:4/3;}
  .plan{padding:22px 18px;}
  .news-body{padding:16px;}
  .faq-q{padding:16px;gap:12px;}
  .faq-q h3{font-size:15px;}
  .footer__bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .btn::after{display:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
/* ============ 设计变量 ============ */
:root{
  --bg-0:#05070D;
  --bg-1:#0A0F1A;
  --bg-2:#101827;
  --c-primary:#2FD4F0;
  --c-primary-2:#4CE0B3;
  --c-accent:#7C6CFF;
  --c-highlight:#FFB454;
  --t-1:#E9F2FA;
  --t-2:#A5B6C9;
  --t-3:#6B7C93;
  --line:rgba(120,190,230,0.14);
  --glass:rgba(255,255,255,0.055);
  --glass-strong:rgba(255,255,255,0.085);
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-1:0 18px 40px -18px rgba(0,0,0,.7);
  --shadow-2:0 26px 60px -24px rgba(0,0,0,.85);
  --glow:0 0 0 1px rgba(47,212,240,.25),0 0 28px -6px rgba(47,212,240,.45);
  --glow-soft:0 0 0 1px rgba(47,212,240,.18),0 0 22px -8px rgba(47,212,240,.35);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur-1:200ms;
  --dur-2:240ms;
  --dur-3:600ms;
  --sp-1:8px;
  --sp-2:12px;
  --sp-3:16px;
  --sp-4:24px;
  --sp-5:32px;
  --sp-6:48px;
  --sp-7:72px;
  --sp-8:96px;
  --container:1240px;
  --font-cn:"Noto Sans SC","HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

/* ============ reset / 基础 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.75;
  color:var(--t-1);
  background:var(--bg-0);
  background-image:
    radial-gradient(760px 620px at 12% -6%,rgba(47,212,240,.10),transparent 62%),
    radial-gradient(680px 560px at 92% 12%,rgba(124,108,255,.10),transparent 60%);
  background-repeat:no-repeat;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body.has-mobile-bar{padding-bottom:72px}
img{max-width:100%;display:block;border-style:solid;border-width:0}
a{color:var(--t-2);text-decoration:none;transition:color var(--dur-1) var(--ease)}
a:hover{color:var(--c-primary)}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.28;color:var(--t-1)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:15px}
hr{border:0;border-top:1px solid var(--line);margin:var(--sp-5) 0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}

/* Foundation 覆盖 */
.button,button.button{
  background:transparent;color:var(--t-1);border:0;padding:0;margin:0;font-family:inherit;
  text-transform:none;letter-spacing:normal;font-size:15px;border-radius:var(--radius-pill);
  transition:all var(--dur-2) var(--ease);
}
.button:hover,button.button:hover{background:transparent;color:var(--c-primary)}
.card{background:transparent;border:0;padding:0;margin:0;box-shadow:none}
.top-bar{background:transparent;padding:0;color:var(--t-1)}
.top-bar ul{background:transparent}
.accordion{background:transparent;border:0;margin:0}
.accordion-title{border:0;background:transparent;color:var(--t-1);font-size:16px;padding:0}
.accordion-content{background:transparent;border:0;color:var(--t-2);padding:0}
.tabs{border:0;background:transparent;margin:0}
.tabs-title>a{padding:0;font-size:inherit;color:var(--t-2)}
.grid-x{margin:0}
.cell{min-width:0}

/* ============ 布局容器 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ============ 顶部信息条 ============ */
.topbar{
  background:rgba(3,5,10,.9);
  border-bottom:1px solid var(--line);
  font-size:12px;
  color:var(--t-3);
  position:relative;
  z-index:60;
}
.topbar__inner{
  display:flex;
  align-items:center;
  gap:var(--sp-4);
  height:36px;
}
.topbar__note{
  font-size:12px;
  color:var(--t-3);
  letter-spacing:.02em;
  white-space:nowrap;
}
.topbar__ticker{
  flex:1;
  overflow:hidden;
  position:relative;
  height:20px;
  color:var(--t-2);
}
.topbar__ticker span{
  position:absolute;
  white-space:nowrap;
  animation:tickerMove 22s linear infinite;
}
@keyframes tickerMove{
  0%{transform:translateX(18%)}
  100%{transform:translateX(-100%)}
}
.topbar__actions{
  display:flex;
  gap:var(--sp-3);
  align-items:center;
}
.topbar__actions a{
  font-size:13px;
  color:var(--t-2);
  border-bottom:1px solid transparent;
  padding-bottom:1px;
}
.topbar__actions a:hover{color:var(--c-primary);border-bottom-color:var(--c-primary)}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(6,9,16,.72);
  border-bottom:1px solid transparent;
  transition:background var(--dur-2) var(--ease),border-color var(--dur-2) var(--ease),backdrop-filter var(--dur-2) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,11,19,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
  box-shadow:0 12px 34px -26px rgba(0,0,0,.95);
}
.nav__inner{
  height:68px;
  display:flex;
  align-items:center;
  gap:var(--sp-5);
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo__mark{
  width:34px;
  height:34px;
  flex-shrink:0;
}
.logo__mark circle,.logo__mark path{
  stroke:var(--c-primary);
  fill:none;
  filter:drop-shadow(0 0 6px rgba(47,212,240,.45));
}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__name{
  font-size:16px;
  font-weight:800;
  color:var(--t-1);
  letter-spacing:-.01em;
}
.logo__sub{
  font-size:11px;
  color:var(--t-3);
  letter-spacing:.06em;
}
.nav__menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav__link{
  position:relative;
  font-size:15px;
  color:var(--t-2);
  padding:10px 14px;
  border-radius:10px;
  white-space:nowrap;
}
.nav__link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
  box-shadow:0 0 10px rgba(47,212,240,.85);
  transform:translateX(-50%);
  transition:width var(--dur-2) var(--ease);
}
.nav__link:hover{color:var(--t-1)}
.nav__link:hover::after{width:22px}
.nav__link.is-active{color:var(--t-1)}
.nav__link.is-active::after{width:22px}
.nav__right{
  display:flex;
  align-items:center;
  gap:var(--sp-3);
  margin-left:var(--sp-4);
}
.nav__burger{
  display:none;
  width:42px;
  height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav__burger span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--t-1);
  transition:transform var(--dur-2) var(--ease),opacity var(--dur-1) var(--ease);
}
.nav__burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__burger.is-open span:nth-child(2){opacity:0}
.nav__burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  border:1px solid transparent;
  position:relative;
  overflow:hidden;
  transition:transform var(--dur-2) var(--ease),box-shadow var(--dur-2) var(--ease),background var(--dur-2) var(--ease),color var(--dur-2) var(--ease),border-color var(--dur-2) var(--ease);
}
.btn::after{
  content:"";
  position:absolute;
  top:-60%;
  left:-120%;
  width:60%;
  height:220%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.32),transparent);
  transform:rotate(12deg);
  transition:left var(--dur-3) var(--ease);
  pointer-events:none;
}
.btn:hover::after{left:130%}
.btn-primary{
  background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));
  color:#04131A;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  color:#04131A;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(47,212,240,.4),0 0 36px -4px rgba(47,212,240,.65);
}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--glow-soft)}
.btn-outline{
  background:transparent;
  border-color:rgba(47,212,240,.45);
  color:var(--c-primary);
}
.btn-outline:hover{
  color:#05161E;
  background:var(--c-primary);
  border-color:var(--c-primary);
  transform:translateY(-2px);
  box-shadow:var(--glow);
}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;
  color:var(--t-2);
  padding:0 6px;
  height:auto;
}
.btn-ghost .arrow{transition:transform var(--dur-2) var(--ease)}
.btn-ghost:hover{color:var(--c-primary);background:transparent}
.btn-ghost:hover .arrow{transform:translateX(4px)}
.btn-block{width:100%}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  line-height:1;
  padding:7px 12px;
  border-radius:var(--radius-pill);
  background:rgba(47,212,240,.12);
  color:var(--c-primary);
  border:1px solid rgba(47,212,240,.24);
  letter-spacing:.04em;
  white-space:nowrap;
}
.badge-amber{
  background:rgba(255,180,84,.12);
  color:var(--c-highlight);
  border-color:rgba(255,180,84,.3);
}
.badge-green{
  background:rgba(76,224,179,.12);
  color:var(--c-primary-2);
  border-color:rgba(76,224,179,.26);
}

/* ============ 文章头 ============ */
.post-hero{
  position:relative;
  padding:56px 0 52px;
  background-image:url("/assets/images/coverpic/cover-3.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.post-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(5,7,13,.9),rgba(5,7,13,.86) 45%,rgba(5,7,13,.95));
}
.post-hero::after{
  content:"";
  position:absolute;
  inset:-20%;
  background-image:
    linear-gradient(rgba(120,190,230,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,190,230,.055) 1px,transparent 1px);
  background-size:52px 52px;
  transform:rotate(-6deg);
  opacity:.65;
  pointer-events:none;
}
.post-hero__inner{position:relative;z-index:2;max-width:900px}

/* 面包屑 */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:12px;
  color:var(--t-3);
  margin-bottom:20px;
}
.crumb a{color:var(--t-3)}
.crumb a:hover{color:var(--c-primary)}
.crumb__sep{color:rgba(107,124,147,.6)}
.crumb__current{color:var(--t-2)}

.post-hero h1{
  font-size:36px;
  font-weight:800;
  line-height:1.34;
  letter-spacing:-.015em;
  margin:16px 0 22px;
  text-wrap:balance;
}

/* meta 玻璃条 */
.post-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  padding:12px 18px;
  border-radius:var(--radius-md);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  font-size:14px;
  color:var(--t-2);
  width:fit-content;
  max-width:100%;
}
.post-meta__item{display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
.post-meta__item svg{width:16px;height:16px;flex-shrink:0}
.post-meta__item svg *{stroke:var(--c-primary);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.post-meta__item em{font-style:normal;color:var(--t-3);font-size:13px}
.num{font-variant-numeric:tabular-nums}

/* ============ 正文布局 ============ */
.article-section{padding:var(--sp-7) 0 var(--sp-8)}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,820px) 220px;
  gap:56px;
  justify-content:center;
  align-items:start;
}
.article-layout.no-toc{grid-template-columns:minmax(0,820px)}

.article-main{min-width:0}

/* 目录 */
.toc-panel{
  position:sticky;
  top:96px;
  padding:20px 18px;
  border-radius:var(--radius-md);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-1);
}
.toc-panel__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:13px;
  font-weight:700;
  color:var(--t-1);
  letter-spacing:.06em;
  margin-bottom:12px;
}
.toc-panel__toggle{
  display:none;
  background:transparent;
  border:0;
  color:var(--t-3);
  font-size:12px;
}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;
  font-size:13px;
  line-height:1.6;
  color:var(--t-3);
  padding:6px 10px;
  border-left:2px solid transparent;
  border-radius:0 8px 8px 0;
  transition:all var(--dur-1) var(--ease);
}
.toc-list a:hover{color:var(--t-1);background:rgba(255,255,255,.04)}
.toc-list a.is-current{
  color:var(--c-primary);
  border-left-color:var(--c-primary);
  background:rgba(47,212,240,.08);
  box-shadow:inset 0 0 18px -12px rgba(47,212,240,.9);
}

/* 正文排版 */
.article-body{
  font-size:17px;
  line-height:1.9;
  color:var(--t-2);
  max-width:820px;
}
.article-body>*+*{margin-top:1.25em}
.article-body p{margin:0}
.article-body h2{
  position:relative;
  font-size:28px;
  font-weight:800;
  color:var(--t-1);
  margin-top:32px;
  margin-bottom:16px;
  padding-left:18px;
  scroll-margin-top:100px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.18em;
  width:4px;
  height:1em;
  border-radius:3px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-2));
  box-shadow:0 0 14px rgba(47,212,240,.7);
}
.article-body h3{
  position:relative;
  font-size:20px;
  font-weight:700;
  color:var(--t-1);
  margin-top:26px;
  margin-bottom:12px;
  padding-left:18px;
  scroll-margin-top:100px;
}
.article-body h3::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:10px;
  height:2px;
  border-radius:2px;
  background:var(--c-primary-2);
}
.article-body h4{
  font-size:17px;
  color:var(--t-1);
  margin-top:20px;
  margin-bottom:10px;
}
.article-body strong{color:var(--t-1);font-weight:700}
.article-body ul,.article-body ol{
  padding-left:6px;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.article-body li{
  position:relative;
  padding-left:22px;
  line-height:1.85;
}
.article-body ul>li::before{
  content:"";
  position:absolute;
  left:4px;
  top:.72em;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--c-primary);
  box-shadow:0 0 10px rgba(47,212,240,.6);
}
.article-body ol{counter-reset:item}
.article-body ol>li::before{
  counter-increment:item;
  content:counter(item,decimal-leading-zero);
  position:absolute;
  left:0;
  top:.1em;
  font-size:13px;
  font-weight:700;
  color:var(--c-primary-2);
  font-variant-numeric:tabular-nums;
}
.article-body a{
  color:var(--c-primary);
  border-bottom:1px solid rgba(47,212,240,.35);
  padding-bottom:1px;
}
.article-body a:hover{color:var(--c-primary-2);border-bottom-color:var(--c-primary-2)}
.article-body blockquote{
  margin:24px 0;
  padding:20px 24px;
  border-radius:var(--radius-md);
  border:1px solid var(--line);
  border-left:3px solid var(--c-primary);
  background:var(--glass);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  color:var(--t-2);
  font-size:16px;
}
.article-body blockquote p+p{margin-top:.8em}
.article-body img{
  border-radius:var(--radius-md);
  border:1px solid var(--line);
  margin:24px auto 8px;
  box-shadow:var(--shadow-1);
}
.article-body figure{margin:24px 0}
.article-body figcaption,
.article-body .caption{
  font-size:13px;
  color:var(--t-3);
  text-align:center;
  margin-top:8px;
}
.article-body table{
  margin:24px 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  overflow:hidden;
}
.article-body thead{background:rgba(255,255,255,.06)}
.article-body th{
  text-align:left;
  font-weight:700;
  color:var(--t-1);
  padding:12px 16px;
  border-bottom:1px solid var(--line);
}
.article-body td{
  padding:12px 16px;
  border-bottom:1px solid var(--line);
  color:var(--t-2);
}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.028)}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body pre{
  margin:24px 0;
  padding:18px 20px;
  border-radius:var(--radius-sm);
  background:rgba(4,7,14,.92);
  border:1px solid var(--line);
  overflow-x:auto;
  font-size:14px;
  line-height:1.7;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.94em;
  color:var(--c-primary-2);
  background:rgba(47,212,240,.08);
  padding:2px 6px;
  border-radius:6px;
}
.article-body pre code{background:transparent;padding:0;color:var(--t-1)}
.article-body hr{margin:32px 0;border-top:1px solid var(--line)}

/* 标签 */
.post-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:40px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.tag{
  font-size:13px;
  color:var(--t-2);
  padding:7px 14px;
  border-radius:var(--radius-pill);
  background:var(--glass);
  border:1px solid var(--line);
  transition:all var(--dur-2) var(--ease);
}
.tag:hover{
  color:var(--c-primary);
  border-color:rgba(47,212,240,.45);
  background:rgba(47,212,240,.08);
  transform:translateY(-2px);
}

/* 空态 */
.empty-state{
  padding:56px 32px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  text-align:center;
  box-shadow:var(--shadow-1);
}
.empty-state__icon{
  width:56px;
  height:56px;
  margin:0 auto 18px;
  border-radius:50%;
  border:1px solid rgba(47,212,240,.35);
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(47,212,240,.07);
}
.empty-state__icon svg{width:24px;height:24px}
.empty-state__icon svg *{stroke:var(--c-primary);fill:none;stroke-width:1.8;stroke-linecap:round}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--t-2);margin-bottom:22px}

/* ============ 文末导航条 ============ */
.post-nav{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  margin-top:56px;
}
.post-nav__card{
  display:block;
  padding:22px 24px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transition:transform var(--dur-2) var(--ease),border-color var(--dur-2) var(--ease),box-shadow var(--dur-2) var(--ease);
}
.post-nav__card:hover{
  transform:translateY(-4px);
  border-color:rgba(47,212,240,.4);
  box-shadow:var(--glow-soft);
}
.post-nav__label{
  display:block;
  font-size:12px;
  color:var(--t-3);
  letter-spacing:.08em;
  margin-bottom:8px;
}
.post-nav__title{
  font-size:16px;
  font-weight:700;
  color:var(--t-1);
  line-height:1.6;
}
.post-nav__card--next{text-align:right}
.post-nav__card--next .post-nav__title{display:flex;justify-content:flex-end;align-items:center;gap:8px}
.post-nav__card--prev .post-nav__title{display:flex;align-items:center;gap:8px}
.post-nav__card:hover .post-nav__title{color:var(--c-primary)}

/* ============ 底部 CTA 带 ============ */
.cta-section{padding:0 0 var(--sp-8)}
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-2);
  padding:40px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.16;
  pointer-events:none;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-120px;
  top:-140px;
  width:420px;
  height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(124,108,255,.32),transparent 68%);
  pointer-events:none;
}
.cta-band__text{position:relative;z-index:2;min-width:0}
.cta-band__title{
  font-size:26px;
  font-weight:800;
  margin-bottom:10px;
}
.cta-band__desc{
  font-size:15px;
  color:var(--t-2);
  max-width:560px;
}
.cta-band__actions{
  position:relative;
  z-index:2;
  display:flex;
  gap:12px;
  flex-shrink:0;
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,15,26,.9),rgba(5,7,13,.98));
  padding:64px 0 0;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  left:50%;
  bottom:-260px;
  width:760px;
  height:520px;
  transform:translateX(-50%);
  background:radial-gradient(circle,rgba(47,212,240,.13),transparent 66%);
  pointer-events:none;
}
.site-footer::after{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,212,240,.55),rgba(124,108,255,.5),transparent);
}
.footer__grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.4fr;
  gap:40px;
  padding-bottom:48px;
}
.footer__col h3{
  font-size:14px;
  font-weight:700;
  color:var(--t-1);
  letter-spacing:.06em;
  margin-bottom:18px;
}
.footer__brand-desc{
  font-size:14px;
  color:var(--t-3);
  line-height:1.85;
  margin:18px 0 18px;
  max-width:320px;
}
.footer__social{display:flex;gap:10px;flex-wrap:wrap}
.footer__social a{
  font-size:13px;
  color:var(--t-2);
  padding:6px 14px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:var(--glass);
  transition:all var(--dur-2) var(--ease);
}
.footer__social a:hover{
  color:var(--c-primary);
  border-color:rgba(47,212,240,.45);
  transform:translateY(-2px);
}
.footer__links{display:flex;flex-direction:column;gap:12px}
.footer__links a{font-size:14px;color:var(--t-3)}
.footer__links a:hover{color:var(--c-primary)}
.footer__form{display:flex;flex-direction:column;gap:12px}
.footer__form input{
  width:100%;
  height:46px;
  padding:12px 16px;
  border-radius:var(--radius-sm);
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--t-1);
  transition:all var(--dur-2) var(--ease);
}
.footer__form input::placeholder{color:var(--t-3)}
.footer__form input:focus{
  outline:none;
  border-color:rgba(47,212,240,.55);
  box-shadow:0 0 0 3px rgba(47,212,240,.14);
  background:rgba(255,255,255,.07);
}
.footer__form input.is-error{
  border-color:rgba(255,180,84,.65);
  box-shadow:0 0 0 3px rgba(255,180,84,.14);
}
.hint{font-size:12px;color:var(--t-3);line-height:1.7}
.hint-error{font-size:13px;color:var(--c-highlight)}
.footer__bottom{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:22px 0 28px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--t-3);
}
.footer__bottom a{color:var(--t-3)}
.footer__bottom a:hover{color:var(--c-primary)}

/* ============ 浮动 CTA / 吸底条 ============ */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:70;
  display:flex;
  align-items:center;
  gap:8px;
  padding:6px 6px 6px 20px;
  border-radius:var(--radius-pill);
  background:rgba(10,15,26,.78);
  border:1px solid var(--line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-2);
  opacity:0;
  transform:translateY(12px);
  pointer-events:none;
  transition:opacity var(--dur-2) var(--ease),transform var(--dur-2) var(--ease);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta__main{
  font-size:14px;
  font-weight:600;
  color:var(--t-1);
  white-space:nowrap;
}
.float-cta__main:hover{color:var(--c-primary)}
.float-cta__icon{
  width:44px;
  height:44px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));
  color:#04131A;
  font-size:16px;
  font-weight:700;
  box-shadow:var(--glow);
  flex-shrink:0;
}
.float-cta__icon:hover{color:#04131A;transform:translateY(-2px)}

/* ============ 工具类 ============ */
.num-tab{font-variant-numeric:tabular-nums}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .post-hero::after{background-size:60px 60px}
}
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 200px;gap:36px}
  .footer__grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer__col--form{grid-column:1 / -1;max-width:460px}
}
@media (max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-layout.no-toc{grid-template-columns:minmax(0,1fr)}
  .toc-panel{
    position:static;
    order:-1;
    margin-bottom:32px;
    padding:16px 18px;
  }
  .toc-panel__toggle{display:inline-flex;align-items:center;gap:6px}
  .toc-list{
    max-height:0;
    overflow:hidden;
    transition:max-height var(--dur-2) var(--ease);
  }
  .toc-panel.is-open .toc-list{max-height:520px;overflow-y:auto}
  .nav__menu{gap:0}
  .nav__link{padding:10px 10px;font-size:14px}
}
@media (max-width:900px){
  .nav__menu{display:none}
  .nav__burger{display:flex}
  .nav__right{margin-left:auto}
  .topbar__ticker{display:none}
  .nav__menu.is-mobile-open{
    display:flex;
    flex-direction:column;
    align-items:stretch;
    position:fixed;
    top:104px;
    right:16px;
    left:16px;
    max-height:calc(100vh - 140px);
    overflow-y:auto;
    padding:16px;
    gap:4px;
    border-radius:var(--radius-lg);
    background:rgba(9,13,22,.94);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    border:1px solid var(--line);
    box-shadow:var(--shadow-2);
    z-index:80;
  }
  .nav__menu.is-mobile-open .nav__link{
    height:48px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    font-size:16px;
    padding:0 14px;
    border-radius:12px;
  }
  .nav__menu.is-mobile-open .nav__link::after{display:none}
  .nav__menu.is-mobile-open .nav__link::before{
    content:"";order:2;width:8px;height:8px;border-right:1.8px solid var(--t-3);
    border-bottom:1.8px solid var(--t-3);transform:rotate(-45deg);
  }
  .nav__menu.is-mobile-open .nav__link.is-active{
    background:rgba(47,212,240,.08);
    color:var(--c-primary);
  }
}
@media (max-width:767px){
  body{font-size:16px}
  body.has-mobile-bar{padding-bottom:88px}
  .container{padding-left:16px;padding-right:16px}
  .topbar__inner{height:32px;justify-content:space-between}
  .topbar__actions a:nth-child(2){display:none}
  .nav__inner{height:56px;gap:12px}
  .logo__sub{display:none}
  .logo__name{font-size:15px}
  .nav__cta{display:none}
  .post-hero{padding:36px 0 36px}
  .post-hero h1{font-size:26px;margin:14px 0 18px}
  .post-meta{gap:8px 16px;padding:12px 14px;font-size:13px}
  .article-section{padding:48px 0 56px}
  .article-body{font-size:16px;line-height:1.88}
  .article-body h2{font-size:22px;margin-top:28px}
  .article-body h3{font-size:18px}
  .post-nav{grid-template-columns:1fr;gap:12px}
  .post-nav__card--next{text-align:left}
  .post-nav__card--next .post-nav__title{justify-content:flex-start}
  .cta-band{
    flex-direction:column;
    align-items:flex-start;
    padding:28px 24px;
    gap:24px;
  }
  .cta-band__title{font-size:21px}
  .cta-band__actions{width:100%;flex-direction:column}
  .cta-band__actions .btn{width:100%}
  .footer__grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px}
  .footer__col--form{max-width:none}
  .footer__bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .float-cta{
    left:0;
    right:0;
    bottom:0;
    border-radius:0;
    border-left:0;
    border-right:0;
    border-bottom:0;
    padding:8px 16px calc(8px + env(safe-area-inset-bottom));
    justify-content:space-between;
    background:rgba(8,12,20,.92);
  }
  .float-cta__main{
    flex:1;
    height:44px;
    display:flex;
    align-items:center;
    justify-content:center;
    border-radius:var(--radius-pill);
    background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));
    color:#04131A;
    font-weight:700;
  }
  .float-cta__main:hover{color:#04131A}
}
@media (max-width:520px){
  .post-hero h1{font-size:23px}
  .post-meta__item em{display:none}
  .cta-band{padding:24px 18px}
  .empty-state{padding:40px 20px}
  .article-body h2{font-size:20px}
  .btn{height:44px;padding:0 20px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .btn::after{display:none}
}

/* roulang page: category1 */
:root{
  --bg-0:#05070D;
  --bg-1:#0A0F1A;
  --bg-2:#101827;
  --c-primary:#2FD4F0;
  --c-primary-2:#4CE0B3;
  --c-accent:#7C6CFF;
  --c-highlight:#FFB454;
  --t-1:#E9F2FA;
  --t-2:#A5B6C9;
  --t-3:#6B7C93;
  --line:rgba(120,190,230,.14);
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.09);
  --r-xl:24px;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 18px 40px -18px rgba(0,0,0,.7);
  --sh-glow:0 0 0 1px rgba(47,212,240,.25),0 0 28px -6px rgba(47,212,240,.45);
  --sp-1:8px;
  --sp-2:12px;
  --sp-3:16px;
  --sp-4:24px;
  --sp-5:32px;
  --sp-6:48px;
  --sp-7:64px;
  --sp-8:96px;
  --fs-hero:52px;
  --fs-h1:36px;
  --fs-h2:28px;
  --fs-h3:20px;
  --fs-body:16.5px;
  --fs-sm:14px;
  --fs-badge:12px;
  --t-fast:200ms;
  --t-mid:240ms;
  --t-slow:600ms;
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:"Noto Sans SC","HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:var(--fs-body);
  line-height:1.8;
  font-weight:400;
  letter-spacing:0;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(700px 500px at 12% -5%,rgba(47,212,240,.10),transparent 65%),
    radial-gradient(760px 520px at 92% 8%,rgba(124,108,255,.10),transparent 68%),
    linear-gradient(rgba(120,190,230,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,190,230,.045) 1px,transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--t-2);text-decoration:none;transition:color var(--t-fast) var(--ease),text-decoration-color var(--t-fast) var(--ease);}
a:hover,a:focus{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,h6,p{margin:0;}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.01em;line-height:1.3;color:var(--t-1);}
button{font-family:inherit;}
hr{border:0;border-top:1px solid var(--line);margin:var(--sp-5) 0;}
table{width:100%;border-collapse:collapse;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:var(--sp-4);padding-right:var(--sp-4);position:relative;z-index:1;}
.section{padding-top:var(--sp-8);padding-bottom:var(--sp-8);position:relative;}
.section--tight{padding-top:var(--sp-7);padding-bottom:var(--sp-7);}
.section__head{max-width:760px;margin-bottom:var(--sp-6);}
.section__head h2{font-size:var(--fs-h2);}
.section__lead{color:var(--t-2);font-size:15px;margin-top:var(--sp-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:var(--sp-1);
  font-size:var(--fs-badge);letter-spacing:.14em;color:var(--c-primary-2);
  text-transform:uppercase;margin-bottom:var(--sp-2);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--c-primary-2);opacity:.8;}

/* 顶部信息条 */
.topbar{background:#03050A;border-bottom:1px solid rgba(120,190,230,.08);font-size:12px;color:var(--t-3);}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);min-height:36px;}
.topbar__left{letter-spacing:.04em;}
.topbar__mid{color:var(--t-3);overflow:hidden;white-space:nowrap;text-overflow:ellipsis;max-width:520px;}
.topbar__right{display:flex;align-items:center;gap:var(--sp-4);font-size:13px;}
.topbar__right a{color:var(--t-2);}
.topbar__right a:hover{color:var(--c-primary);}

/* 主导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,7,13,.72);
  border-bottom:1px solid transparent;
  transition:background var(--t-mid) var(--ease),backdrop-filter var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(5,7,13,.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(120,190,230,.16);
  box-shadow:0 18px 40px -30px rgba(0,0,0,.9);
}
.nav__inner{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);min-height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--t-1);text-decoration:none;}
.logo:hover{text-decoration:none;color:var(--t-1);}
.logo__mark{width:34px;height:34px;flex:0 0 34px;}
.logo__mark circle,.logo__mark path{stroke:var(--c-primary);}
.logo__text{display:flex;flex-direction:column;line-height:1.15;}
.logo__name{font-size:17px;font-weight:800;letter-spacing:-.01em;}
.logo__sub{font-size:11px;color:var(--t-3);letter-spacing:.06em;}
.nav__menu{display:flex;align-items:center;gap:var(--sp-2);}
.nav__link{
  position:relative;display:inline-block;padding:8px 12px;font-size:15px;color:var(--t-2);
  border-radius:var(--r-sm);transition:color var(--t-fast) var(--ease),background var(--t-fast) var(--ease);
}
.nav__link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-primary-2));
  opacity:0;transform:scaleX(.4);transform-origin:left;
  transition:opacity var(--t-mid) var(--ease),transform var(--t-mid) var(--ease);
  box-shadow:0 0 12px rgba(47,212,240,.7);
}
.nav__link:hover{color:var(--t-1);text-decoration:none;background:rgba(255,255,255,.04);}
.nav__link.is-active{color:var(--t-1);}
.nav__link.is-active::after{opacity:1;transform:scaleX(1);}
.nav__right{display:flex;align-items:center;gap:var(--sp-3);}
.nav__burger{
  display:none;width:44px;height:40px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--glass);cursor:pointer;padding:11px 11px;
}
.nav__burger span{display:block;height:2px;border-radius:2px;background:var(--t-1);margin-bottom:4px;}
.nav__burger span:last-child{margin-bottom:0;}

/* 按钮体系 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-pill);font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;position:relative;overflow:hidden;
  transition:transform var(--t-fast) var(--ease),box-shadow var(--t-mid) var(--ease),background var(--t-mid) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.btn::before{
  content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.35),transparent);
  transition:left var(--t-slow) var(--ease);
}
.btn:hover::before{left:130%;}
.btn-primary{
  background:linear-gradient(120deg,var(--c-primary) 0%,rgba(47,212,240,.88) 45%,var(--c-primary-2) 100%);
  color:#04222B;box-shadow:var(--sh-glow);text-decoration:none;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,212,240,.4),0 0 38px -4px rgba(47,212,240,.6);color:#04222B;text-decoration:none;}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,212,240,.35),0 0 18px -8px rgba(47,212,240,.5);}
.btn-ghost{
  background:transparent;border:1px solid rgba(47,212,240,.45);color:var(--c-primary);text-decoration:none;
}
.btn-ghost:hover{background:rgba(47,212,240,.10);color:var(--c-primary);transform:translateY(-2px);text-decoration:none;}
.btn-ghost:active{transform:translateY(1px);}
.btn-text{
  background:none;border:0;color:var(--c-primary);padding:8px 0;font-weight:700;
}
.btn-text .arrow{transition:transform var(--t-fast) var(--ease);display:inline-block;margin-left:6px;}
.btn-text:hover .arrow{transform:translateX(4px);}
.btn-block{width:100%;}
.nav__cta{padding:10px 20px;font-size:14px;}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:var(--fs-badge);font-weight:700;letter-spacing:.04em;
  padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(47,212,240,.12);color:var(--c-primary);
}
.badge--amber{background:rgba(255,180,84,.14);color:var(--c-highlight);}
.badge--seal{
  border-radius:6px;background:rgba(76,224,179,.14);color:var(--c-primary-2);
  padding:5px 10px;letter-spacing:.16em;
}

/* Hero 矮版 */
.hero{position:relative;overflow:hidden;border-bottom:1px solid rgba(120,190,230,.10);}
.hero--slim{min-height:360px;display:flex;align-items:center;padding:56px 0 52px;}
.hero__bg{
  position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(180deg,rgba(5,7,13,.86) 0%,rgba(5,7,13,.72) 45%,rgba(5,7,13,.94) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.hero__bg::after{
  content:"";position:absolute;inset:0;
  background-image:
    repeating-linear-gradient(115deg,rgba(120,190,230,.06) 0 1px,transparent 1px 22px),
    radial-gradient(620px 420px at 78% 20%,rgba(124,108,255,.22),transparent 70%);
  opacity:.9;
}
.hero__inner{display:grid;grid-template-columns:1.15fr .85fr;gap:var(--sp-6);align-items:center;}
.hero__text h1{font-size:var(--fs-h1);margin:var(--sp-3) 0 var(--sp-3);}
.hero__sub{color:var(--t-2);font-size:16px;max-width:560px;}
.hero__actions{display:flex;flex-wrap:wrap;gap:var(--sp-3);margin-top:var(--sp-5);}
.hero__figure{margin:0;position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1);aspect-ratio:4/3;background:linear-gradient(140deg,rgba(47,212,240,.14),rgba(124,108,255,.12));}
.hero__figure img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-lg);}
.hero__figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(5,7,13,.72) 100%);}
.hero__crumb{font-size:12px;color:var(--t-3);display:flex;gap:8px;align-items:center;}
.hero__crumb span.sep{opacity:.5;}

/* 布局：目录 + 内容 */
.layout{display:grid;grid-template-columns:248px minmax(0,1fr);gap:var(--sp-6);align-items:start;}
.toc{
  position:sticky;top:96px;padding:var(--sp-4);border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(16px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
}
.toc h2{font-size:14px;letter-spacing:.1em;color:var(--t-3);text-transform:uppercase;font-weight:700;}
.toc__list{margin-top:var(--sp-3);display:flex;flex-direction:column;gap:2px;}
.toc__list a{
  display:block;padding:8px 10px;border-radius:var(--r-sm);font-size:14px;color:var(--t-2);
  border-left:2px solid transparent;transition:all var(--t-fast) var(--ease);
}
.toc__list a:hover{color:var(--t-1);background:rgba(255,255,255,.04);text-decoration:none;border-left-color:rgba(47,212,240,.5);}
.toc__list a.is-current{color:var(--c-primary);border-left-color:var(--c-primary);background:rgba(47,212,240,.08);box-shadow:0 0 18px -8px rgba(47,212,240,.6);}
.toc__tip{margin-top:var(--sp-4);padding-top:var(--sp-3);border-top:1px solid var(--line);font-size:12px;color:var(--t-3);line-height:1.7;}

/* 图文交错内容块 */
.entries{display:flex;flex-direction:column;gap:var(--sp-7);}
.entry{
  display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-6);align-items:center;
  padding-bottom:var(--sp-6);border-bottom:1px solid rgba(120,190,230,.10);
}
.entry:last-child{border-bottom:0;padding-bottom:0;}
.entry--flip .entry__media{order:-1;}
.entry__num{font-size:13px;font-weight:700;color:var(--c-primary-2);letter-spacing:.16em;}
.entry h2{font-size:24px;margin:var(--sp-2) 0 var(--sp-3);}
.entry p{color:var(--t-2);font-size:15.5px;}
.entry p + p{margin-top:var(--sp-3);}
.entry__list{margin-top:var(--sp-4);display:flex;flex-direction:column;gap:10px;}
.entry__list li{
  position:relative;padding-left:20px;color:var(--t-2);font-size:14.5px;
}
.entry__list li::before{
  content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:2px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));
  box-shadow:0 0 10px rgba(47,212,240,.55);
}
.entry__media{
  margin:0;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);
  background:linear-gradient(140deg,rgba(47,212,240,.12),rgba(124,108,255,.10));
  aspect-ratio:16/10;box-shadow:var(--sh-1);
}
.entry__media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-slow) var(--ease);}
.entry__media:hover img{transform:scale(1.03);}

/* 数据要点条 */
.stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--sp-4);
  padding:var(--sp-5);border-radius:var(--r-xl);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(16px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
}
.stat__num{font-size:32px;font-weight:800;color:var(--c-primary-2);font-variant-numeric:tabular-nums;line-height:1.25;}
.stat__label{font-size:12px;color:var(--t-3);letter-spacing:.06em;margin-top:4px;}

/* 提示卡 */
.note{
  margin-top:var(--sp-5);padding:var(--sp-4);border-radius:var(--r-md);
  background:linear-gradient(120deg,rgba(255,180,84,.10),rgba(255,180,84,.03));
  border:1px solid rgba(255,180,84,.28);
}
.note h3{font-size:16px;color:var(--c-highlight);margin-bottom:var(--sp-2);}
.note p{color:var(--t-2);font-size:14.5px;}

/* 清单卡 */
.checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-4);}
.check{
  padding:var(--sp-4);border-radius:var(--r-lg);background:var(--glass);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease);
}
.check:hover{transform:translateY(-4px);border-color:rgba(47,212,240,.35);box-shadow:0 0 0 1px rgba(47,212,240,.2),0 0 30px -10px rgba(47,212,240,.55);}
.check h3{font-size:17px;margin-bottom:var(--sp-2);}
.check p{font-size:14px;color:var(--t-2);}
.check__tag{margin-bottom:var(--sp-2);display:inline-block;}

/* FAQ */
.faq{display:flex;flex-direction:column;gap:12px;}
.faq__item{
  border-radius:var(--r-md);background:var(--glass);border:1px solid var(--line);
  overflow:hidden;transition:border-color var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.faq__item.is-open{border-color:rgba(47,212,240,.4);box-shadow:0 0 0 1px rgba(47,212,240,.18),0 0 26px -12px rgba(47,212,240,.7);}
.faq__q{
  width:100%;display:flex;align-items:center;gap:var(--sp-3);text-align:left;
  padding:18px var(--sp-4);background:none;border:0;cursor:pointer;color:var(--t-1);
}
.faq__q:hover{background:rgba(255,255,255,.03);}
.faq__idx{font-size:13px;font-weight:800;color:var(--c-primary);font-variant-numeric:tabular-nums;min-width:26px;}
.faq__q h3{font-size:17px;font-weight:700;flex:1;}
.faq__chev{
  width:10px;height:10px;border-right:2px solid var(--t-2);border-bottom:2px solid var(--t-2);
  transform:rotate(45deg);transition:transform var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);flex:0 0 10px;
}
.faq__item.is-open .faq__chev{transform:rotate(-135deg);border-color:var(--c-primary);}
.faq__a{max-height:0;overflow:hidden;transition:max-height var(--t-mid) var(--ease);}
.faq__a-inner{padding:0 var(--sp-4) 20px 58px;color:var(--t-2);font-size:15px;line-height:1.85;}

/* 其它分类胶囊 */
.pills-block{padding-top:var(--sp-7);padding-bottom:var(--sp-6);}
.pills{display:flex;flex-wrap:wrap;gap:var(--sp-2);}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line);color:var(--t-2);font-size:14px;
  transition:all var(--t-fast) var(--ease);
}
.pill:hover{color:var(--c-primary);border-color:rgba(47,212,240,.4);transform:translateY(-2px);text-decoration:none;box-shadow:0 0 22px -12px rgba(47,212,240,.9);}

/* 底部 CTA 带 */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(47,212,240,.10),rgba(124,108,255,.10)),var(--bg-1);
  padding:var(--sp-6);display:flex;align-items:center;justify-content:space-between;gap:var(--sp-5);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-1);
}
.cta-band__bg{
  position:absolute;inset:0;opacity:.28;
  background-image:linear-gradient(180deg,rgba(5,7,13,.6),rgba(5,7,13,.85)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
}
.cta-band__inner{position:relative;z-index:1;}
.cta-band h2{font-size:24px;}
.cta-band p{color:var(--t-2);font-size:14.5px;margin-top:var(--sp-2);max-width:520px;}
.cta-band__actions{position:relative;z-index:1;display:flex;gap:var(--sp-3);flex-wrap:wrap;}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;display:flex;align-items:center;gap:10px;
  padding:12px 18px;border-radius:var(--r-pill);
  background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));color:#04222B;font-weight:700;font-size:14px;
  box-shadow:var(--sh-glow);opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity var(--t-mid) var(--ease),transform var(--t-mid) var(--ease);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{text-decoration:none;color:#04222B;}
.float-cta__mini{
  width:32px;height:32px;border-radius:50%;display:grid;place-items:center;
  background:rgba(4,34,43,.16);color:#04222B;font-size:14px;font-weight:800;
}
.back-top{
  position:fixed;right:24px;bottom:96px;z-index:69;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:rgba(10,15,26,.8);color:var(--t-2);cursor:pointer;
  display:grid;place-items:center;opacity:0;pointer-events:none;
  transition:opacity var(--t-mid) var(--ease),border-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease);
}
.back-top.is-visible{opacity:1;pointer-events:auto;}
.back-top:hover{color:var(--c-primary);border-color:rgba(47,212,240,.45);}

/* 页脚 */
.site-footer{
  position:relative;margin-top:var(--sp-8);padding-top:var(--sp-7);
  background:var(--bg-1);border-top:1px solid rgba(120,190,230,.12);overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,212,240,.5),transparent);
}
.site-footer::after{
  content:"";position:absolute;bottom:-220px;left:50%;transform:translateX(-50%);
  width:820px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,212,240,.10),transparent 68%);
  pointer-events:none;
}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:var(--sp-6);position:relative;z-index:1;}
.footer__col h3{font-size:15px;margin-bottom:var(--sp-4);color:var(--t-1);}
.footer__brand-desc{color:var(--t-3);font-size:13.5px;margin-top:var(--sp-3);max-width:300px;line-height:1.8;}
.footer__social{display:flex;gap:var(--sp-2);margin-top:var(--sp-4);}
.footer__social a{
  font-size:13px;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--glass);color:var(--t-2);
}
.footer__social a:hover{color:var(--c-primary);border-color:rgba(47,212,240,.4);text-decoration:none;}
.footer__links{display:flex;flex-direction:column;gap:10px;}
.footer__links a{font-size:14px;color:var(--t-2);}
.footer__links a:hover{color:var(--c-primary);}
.footer__form{display:flex;flex-direction:column;gap:var(--sp-2);}
.footer__form input{
  width:100%;padding:12px 16px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--line);color:var(--t-1);font-size:14px;
  transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
.footer__form input::placeholder{color:var(--t-3);}
.footer__form input:focus{outline:none;border-color:rgba(47,212,240,.6);box-shadow:0 0 0 3px rgba(47,212,240,.14);}
.hint{font-size:12px;color:var(--t-3);line-height:1.7;}
.footer__bottom{
  margin-top:var(--sp-7);padding:var(--sp-4) 0 var(--sp-5);
  border-top:1px solid rgba(120,190,230,.10);
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-3);flex-wrap:wrap;
  font-size:13px;color:var(--t-3);position:relative;z-index:1;
}
.footer__bottom a{color:var(--t-3);}
.footer__bottom a:hover{color:var(--c-primary);}

/* 移动端抽屉 */
.mobile-panel{
  position:fixed;inset:0;z-index:90;background:rgba(5,7,13,.92);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  transform:translateX(100%);transition:transform var(--t-mid) var(--ease);
  display:flex;flex-direction:column;padding:var(--sp-5) var(--sp-4) var(--sp-4);
}
.mobile-panel.is-open{transform:translateX(0);}
.mobile-panel__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-5);}
.mobile-panel__close{
  width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--glass);color:var(--t-1);font-size:20px;cursor:pointer;line-height:1;
}
.mobile-panel__nav{display:flex;flex-direction:column;flex:1;overflow-y:auto;}
.mobile-panel__nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 4px;border-bottom:1px solid rgba(120,190,230,.10);
  color:var(--t-1);font-size:16px;
}
.mobile-panel__nav a::after{content:"›";color:var(--t-3);font-size:20px;}
.mobile-panel__nav a.is-active{color:var(--c-primary);}
.mobile-panel__foot{padding-top:var(--sp-4);}

/* 响应式 */
@media (min-width:1440px){
  body::before{background-image:
    radial-gradient(900px 620px at 12% -5%,rgba(47,212,240,.12),transparent 65%),
    radial-gradient(900px 620px at 92% 8%,rgba(124,108,255,.12),transparent 68%),
    linear-gradient(rgba(120,190,230,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,190,230,.045) 1px,transparent 1px);
    background-size:auto,auto,64px 64px,64px 64px;}
}
@media (max-width:1199px){
  .nav__menu{gap:2px;}
  .nav__link{padding:8px 9px;font-size:14px;}
  .footer__grid{grid-template-columns:1.2fr 1fr 1fr;}
  .footer__col--form{grid-column:1 / -1;}
  .layout{grid-template-columns:210px minmax(0,1fr);gap:var(--sp-5);}
}
@media (max-width:1023px){
  :root{--fs-h1:30px;--fs-h2:25px;--sp-8:72px;--sp-7:56px;}
  .nav__menu{display:none;}
  .nav__burger{display:block;}
  .nav__cta{display:none;}
  .hero__inner{grid-template-columns:1fr;gap:var(--sp-5);}
  .hero--slim{padding:44px 0 40px;min-height:0;}
  .layout{grid-template-columns:1fr;}
  .toc{position:relative;top:0;}
  .toc__list{flex-direction:row;flex-wrap:wrap;}
  .entry{grid-template-columns:1fr;gap:var(--sp-4);}
  .entry--flip .entry__media{order:0;}
  .checklist{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .float-cta{display:none;}
}
@media (max-width:767px){
  :root{--fs-h1:26px;--fs-h2:22px;--fs-h3:18px;--fs-body:16px;--sp-8:56px;--sp-7:44px;}
  .container{padding-left:16px;padding-right:16px;}
  .topbar__mid{display:none;}
  .topbar{font-size:11px;}
  .nav__inner{min-height:56px;}
  .logo__sub{display:none;}
  .stats{grid-template-columns:1fr;gap:var(--sp-3);}
  .footer__grid{grid-template-columns:1fr;gap:var(--sp-5);}
  .footer__bottom{flex-direction:column;align-items:flex-start;}
  .entry h2{font-size:21px;}
  .mobile-sticky-cta{
    position:fixed;left:0;right:0;bottom:0;z-index:80;display:flex;align-items:center;justify-content:space-between;
    gap:var(--sp-3);height:56px;padding:0 16px calc(0px + env(safe-area-inset-bottom));
    background:rgba(5,7,13,.92);backdrop-filter:blur(18px);border-top:1px solid rgba(120,190,230,.16);
  }
  .mobile-sticky-cta span{font-size:13px;color:var(--t-2);}
  .mobile-sticky-cta .btn{padding:9px 18px;font-size:14px;}
  body{padding-bottom:56px;}
  .back-top{bottom:76px;right:16px;}
}
@media (max-width:479px){
  .hero__text h1{font-size:23px;}
  .check{padding:16px;}
  .cta-band{padding:var(--sp-4);}
  .stat__num{font-size:26px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
  .btn::before{display:none;}
}

/* roulang page: category2 */
:root{
  --bg-0:#05070D;
  --bg-1:#0A0F1A;
  --bg-2:#101827;
  --c-primary:#2FD4F0;
  --c-primary-2:#4CE0B3;
  --c-accent:#7C6CFF;
  --c-highlight:#FFB454;
  --t-1:#E9F2FA;
  --t-2:#A5B6C9;
  --t-3:#6B7C93;
  --line:rgba(120,190,230,0.14);
  --line-strong:rgba(120,190,230,0.28);
  --glass:rgba(255,255,255,0.055);
  --glass-2:rgba(255,255,255,0.09);

  --r-lg:24px;
  --r-md:20px;
  --r-sm:14px;
  --r-xs:12px;
  --r-pill:999px;

  --shadow:0 18px 40px -18px rgba(0,0,0,0.7);
  --glow:0 0 0 1px rgba(47,212,240,0.25),0 0 28px -6px rgba(47,212,240,0.45);
  --glow-soft:0 0 0 1px rgba(47,212,240,0.18),0 0 22px -10px rgba(47,212,240,0.4);

  --ease:cubic-bezier(0.22,0.61,0.36,1);
  --dur-1:200ms;
  --dur-2:240ms;
  --dur-3:600ms;

  --sp-1:8px;
  --sp-2:12px;
  --sp-3:16px;
  --sp-4:24px;
  --sp-5:32px;
  --sp-6:48px;
  --sp-7:96px;

  --fs-h1:36px;
  --fs-h2:28px;
  --fs-h3:20px;
  --fs-body:16.5px;
  --fs-sm:14px;
  --fs-xs:12px;
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:"Noto Sans SC","HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:var(--fs-body);
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--dur-1) var(--ease),opacity var(--dur-1) var(--ease)}
a:hover{color:var(--c-primary)}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0;padding:0}
h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
hr{border:0;border-top:1px solid var(--line);margin:var(--sp-5) 0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ============ 顶部信息条 ============ */
.info-bar{
  background:#03050A;
  border-bottom:1px solid var(--line);
  font-size:var(--fs-xs);
  color:var(--t-3);
  line-height:36px;
  height:36px;
}
.info-bar .container{display:flex;align-items:center;gap:var(--sp-4);justify-content:space-between}
.info-bar__left{white-space:nowrap;letter-spacing:.02em}
.info-bar__mid{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--t-3)}
.info-bar__right{display:flex;gap:var(--sp-3);align-items:center}
.info-bar__right a{font-size:13px;color:var(--t-2)}
.info-bar__right a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,7,13,0.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transition:background var(--dur-2) var(--ease),box-shadow var(--dur-2) var(--ease);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,212,240,0.35),transparent);
  opacity:.5;transition:opacity var(--dur-2) var(--ease);
}
.site-header.is-scrolled{background:rgba(5,7,13,0.9);box-shadow:0 14px 34px -24px rgba(0,0,0,.9)}
.site-header.is-scrolled::after{opacity:1}

.nav__inner{display:flex;align-items:center;gap:var(--sp-4);height:68px}

.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo__mark{width:38px;height:38px;stroke:var(--c-primary);fill:none;flex:0 0 auto;filter:drop-shadow(0 0 10px rgba(47,212,240,.35))}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__name{font-size:16px;font-weight:800;letter-spacing:-0.01em;color:var(--t-1)}
.logo__sub{font-size:11px;color:var(--t-3);letter-spacing:.04em}

.nav__menu{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav__link{
  position:relative;padding:8px 12px;font-size:14.5px;color:var(--t-2);
  border-radius:var(--r-xs);transition:color var(--dur-1) var(--ease),background var(--dur-1) var(--ease);
}
.nav__link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-primary-2));
  opacity:0;transform:scaleX(.4);transition:opacity var(--dur-2) var(--ease),transform var(--dur-2) var(--ease);
  box-shadow:0 0 12px rgba(47,212,240,.7);
}
.nav__link:hover{color:var(--t-1);background:rgba(255,255,255,.04)}
.nav__link.is-active{color:var(--t-1);font-weight:600}
.nav__link.is-active::after{opacity:1;transform:scaleX(1)}

.nav__right{display:flex;align-items:center;gap:var(--sp-2);flex:0 0 auto}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  position:relative;overflow:hidden;white-space:nowrap;
  transition:transform var(--dur-2) var(--ease),box-shadow var(--dur-2) var(--ease),background var(--dur-2) var(--ease),color var(--dur-2) var(--ease),border-color var(--dur-2) var(--ease);
}
.btn::before{
  content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.42),transparent);
  transition:left var(--dur-3) var(--ease);pointer-events:none;
}
.btn:hover::before{left:130%}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(1px)}

.btn-primary{
  color:#04222A;
  background:linear-gradient(120deg,var(--c-primary) 8%,var(--c-primary-2) 92%);
  box-shadow:var(--glow);
}
.btn-primary:hover{color:#04222A;box-shadow:0 0 0 1px rgba(47,212,240,.4),0 0 34px -4px rgba(47,212,240,.62)}
.btn-primary:active{box-shadow:0 0 0 1px rgba(47,212,240,.3),0 0 16px -8px rgba(47,212,240,.5)}

.btn-outline{
  color:var(--c-primary);background:transparent;border:1px solid rgba(47,212,240,.45);
}
.btn-outline:hover{background:rgba(47,212,240,.08);color:var(--c-primary);box-shadow:var(--glow-soft)}
.btn-outline:active{transform:translateY(1px);box-shadow:none}

.btn-ghost{color:var(--t-1);padding:0 6px;height:auto;background:none}
.btn-ghost .arrow{transition:transform var(--dur-2) var(--ease);color:var(--c-primary)}
.btn-ghost:hover .arrow{transform:translateX(3px)}

.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%;margin-top:var(--sp-2)}

.nav__cta{height:40px;padding:0 20px;font-size:14px}
.nav__burger{display:none;width:42px;height:42px;border-radius:var(--r-xs);border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:4px}
.nav__burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t-1);transition:transform var(--dur-2) var(--ease),opacity var(--dur-2) var(--ease)}
.nav__burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav__burger.is-open span:nth-child(2){opacity:0}
.nav__burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ============ 移动面板 ============ */
.mobile-panel{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);z-index:95;
  background:rgba(8,12,22,0.94);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform var(--dur-2) var(--ease);
  display:flex;flex-direction:column;padding:22px 20px 0;
}
.mobile-panel.is-open{transform:translateX(0)}
.mobile-panel__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-4)}
.mobile-panel__close{width:40px;height:40px;border-radius:var(--r-xs);border:1px solid var(--line);color:var(--t-2);font-size:18px;display:flex;align-items:center;justify-content:center}
.mobile-panel__list{flex:1;overflow-y:auto}
.mobile-panel__list a{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;font-size:15.5px;color:var(--t-2);border-bottom:1px solid var(--line);
}
.mobile-panel__list a:hover,.mobile-panel__list a.is-active{color:var(--c-primary)}
.mobile-panel__list a::after{content:"›";color:var(--t-3);font-size:18px}
.mobile-panel__foot{padding:16px 0 24px;border-top:1px solid var(--line)}
.mask{position:fixed;inset:0;background:rgba(3,5,10,.6);backdrop-filter:blur(2px);z-index:90;opacity:0;pointer-events:none;transition:opacity var(--dur-2) var(--ease)}
.mask.is-open{opacity:1;pointer-events:auto}

/* ============ 通用排版 ============ */
.section{padding:var(--sp-7) 0;position:relative}
.section--tight{padding:72px 0}
.section__head{max-width:760px;margin-bottom:var(--sp-6)}
.section__head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:var(--fs-xs);letter-spacing:.14em;
  color:var(--c-primary);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--c-primary);opacity:.7}

h1{font-size:var(--fs-h1);line-height:1.28;font-weight:800;letter-spacing:-0.01em}
h2{font-size:var(--fs-h2);line-height:1.35;font-weight:800;letter-spacing:-0.01em}
h3{font-size:var(--fs-h3);line-height:1.45;font-weight:700;letter-spacing:-0.01em}
.lead{font-size:17px;color:var(--t-2);line-height:1.85}
.muted{color:var(--t-3)}
.small{font-size:var(--fs-sm)}

.glow-spot{
  position:absolute;width:720px;height:720px;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(47,212,240,.16),transparent 62%);
  filter:blur(10px);z-index:0;
}
.glow-spot--accent{background:radial-gradient(circle,rgba(124,108,255,.15),transparent 62%)}
.section > .container{position:relative;z-index:1}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:64px 0 72px;
  background:
    linear-gradient(180deg,rgba(5,7,13,.86) 0%,rgba(5,7,13,.92) 60%,var(--bg-0) 100%),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;inset:0;opacity:.35;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 7px);
}
.hero__inner{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:var(--sp-6);align-items:center}
.hero__badge{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:var(--r-xs);
  font-size:var(--fs-xs);letter-spacing:.06em;color:var(--c-primary);
  background:rgba(47,212,240,.1);border:1px solid rgba(47,212,240,.28);margin-bottom:var(--sp-3);
}
.hero h1{margin-bottom:var(--sp-3)}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--c-primary),var(--c-primary-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero__lead{max-width:620px;color:var(--t-2);font-size:16.5px;line-height:1.9;margin-bottom:var(--sp-5)}
.hero__actions{display:flex;flex-wrap:wrap;gap:var(--sp-2);align-items:center}
.hero__media{position:relative}
.media-frame{
  position:relative;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-2);box-shadow:var(--shadow);
}
.media-frame::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(5,7,13,.72));pointer-events:none}
.media-frame img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.hero__tag{
  position:absolute;left:-10px;bottom:-18px;
  background:rgba(10,15,26,.92);backdrop-filter:blur(16px);
  border:1px solid var(--line-strong);border-radius:var(--r-sm);
  padding:12px 18px;box-shadow:var(--shadow);min-width:180px;
}
.hero__tag strong{display:block;font-size:22px;font-weight:800;color:var(--c-primary-2);font-variant-numeric:tabular-nums;line-height:1.2}
.hero__tag span{font-size:var(--fs-xs);color:var(--t-3)}

.stat-row{display:flex;gap:var(--sp-5);flex-wrap:wrap;margin-top:var(--sp-5);padding-top:var(--sp-4);border-top:1px solid var(--line)}
.stat{min-width:110px}
.stat b{display:block;font-size:26px;font-weight:800;line-height:1.25;font-variant-numeric:tabular-nums;color:var(--t-1)}
.stat span{font-size:var(--fs-xs);color:var(--t-3);letter-spacing:.02em}

/* ============ 筛选胶囊条 ============ */
.filter-bar{
  position:sticky;top:68px;z-index:60;
  background:rgba(6,9,17,0.86);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:14px 0;
}
.filter-bar__scroll{display:flex;gap:10px;overflow-x:auto;scrollbar-width:none}
.filter-bar__scroll::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:6px;
  height:38px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--t-2);font-size:14px;transition:all var(--dur-2) var(--ease);white-space:nowrap;
}
.chip:hover{color:var(--t-1);border-color:var(--line-strong);background:rgba(255,255,255,.06)}
.chip.is-on{color:#04222A;background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));border-color:transparent;box-shadow:var(--glow-soft);font-weight:600}

/* ============ 卡片墙（瀑布） ============ */
.wall{column-count:3;column-gap:var(--sp-4)}
.wall__item{break-inside:avoid;display:inline-block;width:100%;margin-bottom:var(--sp-4)}

.card{
  position:relative;border-radius:var(--r-md);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.028));
  box-shadow:var(--shadow);padding:var(--sp-4);overflow:hidden;
  transition:transform var(--dur-2) var(--ease),border-color var(--dur-2) var(--ease),box-shadow var(--dur-2) var(--ease);
}
.card::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.5),transparent);opacity:.35;
}
.card::after{
  content:"";position:absolute;top:0;left:-140%;width:70%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.09),transparent);
  transition:left var(--dur-3) var(--ease);pointer-events:none;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow),0 0 0 1px rgba(47,212,240,.22),0 0 30px -12px rgba(47,212,240,.55)}
.card:hover::after{left:150%}

.card__media{border-radius:var(--r-sm);overflow:hidden;position:relative;border:1px solid var(--line);margin-bottom:var(--sp-3)}
.card__media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform var(--dur-3) var(--ease)}
.card:hover .card__media img{transform:scale(1.03)}
.card__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(5,7,13,.6))}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:8px;font-size:var(--fs-xs);font-weight:600;
  color:var(--c-primary);background:rgba(47,212,240,.12);border:1px solid rgba(47,212,240,.22);
}
.badge--warm{color:var(--c-highlight);background:rgba(255,180,84,.12);border-color:rgba(255,180,84,.28)}
.badge--mint{color:var(--c-primary-2);background:rgba(76,224,179,.12);border-color:rgba(76,224,179,.26)}

.card__top{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-2);margin-bottom:10px}
.card h3{font-size:18px;margin-bottom:8px}
.card p{font-size:14.5px;color:var(--t-2);line-height:1.8}
.card__list{margin-top:12px;display:grid;gap:8px}
.card__list li{position:relative;padding-left:18px;font-size:13.5px;color:var(--t-2);line-height:1.7}
.card__list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));opacity:.85;
}
.card__meta{display:flex;align-items:center;justify-content:space-between;margin-top:var(--sp-3);padding-top:12px;border-top:1px solid var(--line);font-size:var(--fs-xs);color:var(--t-3)}
.card__meta .arrow{color:var(--c-primary);transition:transform var(--dur-2) var(--ease)}
.card:hover .card__meta .arrow{transform:translateX(3px)}

/* ============ 现象对照 ============ */
.symptom-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-3)}
.symptom{
  border-radius:var(--r-sm);border:1px solid var(--line);background:var(--glass);
  padding:var(--sp-4);transition:border-color var(--dur-2) var(--ease),transform var(--dur-2) var(--ease),background var(--dur-2) var(--ease);
}
.symptom:hover{border-color:var(--line-strong);transform:translateY(-3px);background:var(--glass-2)}
.symptom b{display:block;font-size:15px;font-weight:700;margin-bottom:8px;color:var(--t-1)}
.symptom span{font-size:13.5px;color:var(--t-2);line-height:1.75}

/* ============ 分步说明（横向） ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-3);counter-reset:step}
.step{
  position:relative;border-radius:var(--r-md);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  padding:var(--sp-4);padding-top:52px;
}
.step::before{
  counter-increment:step;content:"0" counter(step);
  position:absolute;top:16px;left:var(--sp-4);
  font-size:26px;font-weight:800;line-height:1;color:rgba(47,212,240,.28);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.step h3{font-size:16px;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--t-2);line-height:1.75}

/* ============ 提示条 ============ */
.notice{
  display:flex;gap:var(--sp-3);align-items:flex-start;
  border-radius:var(--r-md);border:1px solid rgba(255,180,84,.3);
  background:rgba(255,180,84,.07);padding:var(--sp-4);
}
.notice__icon{
  flex:0 0 auto;width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  color:var(--c-highlight);border:1px solid rgba(255,180,84,.35);background:rgba(255,180,84,.1);font-weight:700;
}
.notice h3{font-size:16px;margin-bottom:6px;color:#FFD8A3}
.notice p{font-size:14px;color:var(--t-2);line-height:1.8}

/* ============ FAQ ============ */
.faq{display:grid;gap:12px}
.faq__item{
  border-radius:var(--r-sm);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.025));
  overflow:hidden;transition:border-color var(--dur-2) var(--ease),box-shadow var(--dur-2) var(--ease);
}
.faq__item.is-open{border-color:var(--line-strong);box-shadow:var(--glow-soft)}
.faq__q{
  width:100%;display:flex;align-items:center;gap:var(--sp-3);
  padding:18px var(--sp-4);text-align:left;
}
.faq__no{flex:0 0 auto;font-size:13px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;width:26px}
.faq__q h3{flex:1;font-size:16px;font-weight:600;color:var(--t-1);line-height:1.6}
.faq__arrow{
  flex:0 0 auto;width:22px;height:22px;color:var(--t-3);
  transition:transform var(--dur-2) var(--ease),color var(--dur-2) var(--ease);
}
.faq__item.is-open .faq__arrow{transform:rotate(180deg);color:var(--c-primary)}
.faq__a{max-height:0;overflow:hidden;transition:max-height var(--dur-2) var(--ease)}
.faq__a p{padding:0 var(--sp-4) 18px 54px;font-size:15px;line-height:1.85;color:var(--t-2)}

/* ============ 分类胶囊组 ============ */
.cat-pills{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.cat-pill{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:rgba(255,255,255,.035);
  font-size:14.5px;color:var(--t-2);transition:all var(--dur-2) var(--ease);
}
.cat-pill:hover{color:var(--t-1);border-color:var(--line-strong);transform:translateY(-2px);background:rgba(255,255,255,.07)}
.cat-pill.is-current{color:#04222A;background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));border-color:transparent;font-weight:600;box-shadow:var(--glow-soft)}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--line-strong);
  background:
    linear-gradient(120deg,rgba(47,212,240,.14),rgba(124,108,255,.12)),
    url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
  padding:var(--sp-6) var(--sp-5);
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);flex-wrap:wrap;
  box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,13,.55),rgba(5,7,13,.78));
}
.cta-band__txt{position:relative;z-index:1;max-width:640px}
.cta-band__txt h2{font-size:24px;margin-bottom:8px}
.cta-band__txt p{font-size:14.5px;color:var(--t-2)}
.cta-band__act{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;margin-top:var(--sp-7);
  background:var(--bg-1);border-top:1px solid var(--line);overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:-260px;right:-160px;width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,212,240,.1),transparent 62%);pointer-events:none;
}
.site-footer::after{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,212,240,.5),transparent);
}
.footer__grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:var(--sp-5);
  padding:64px 0 var(--sp-5);
}
.footer__col h3{font-size:15px;margin-bottom:var(--sp-3);color:var(--t-1);letter-spacing:.02em}
.footer__brand-desc{font-size:14px;color:var(--t-3);line-height:1.85;margin:var(--sp-3) 0}
.footer__social{display:flex;gap:10px;flex-wrap:wrap}
.footer__social a{
  font-size:13px;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--t-2);transition:all var(--dur-2) var(--ease);
}
.footer__social a:hover{color:var(--c-primary);border-color:rgba(47,212,240,.4);background:rgba(47,212,240,.07)}
.footer__links{display:grid;gap:10px}
.footer__links a{font-size:14px;color:var(--t-2)}
.footer__links a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px}
.footer__form input{
  width:100%;height:46px;padding:0 16px;border-radius:var(--r-xs);
  background:var(--glass);border:1px solid var(--line);color:var(--t-1);
  font-size:14px;transition:border-color var(--dur-2) var(--ease),box-shadow var(--dur-2) var(--ease);
}
.footer__form input::placeholder{color:var(--t-3)}
.footer__form input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(47,212,240,.16)}
.footer__form .hint{display:block;margin-top:10px;font-size:12px;color:var(--t-3);line-height:1.7}
.footer__bottom{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-3);flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid var(--line);
  font-size:13px;color:var(--t-3);
}
.footer__bottom a:hover{color:var(--c-primary)}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:flex;align-items:center;gap:10px;padding:8px;border-radius:var(--r-pill);
  background:rgba(10,15,26,.86);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line-strong);box-shadow:var(--shadow);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity var(--dur-2) var(--ease),transform var(--dur-2) var(--ease);
}
.float-cta.is-show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta .btn{height:40px;padding:0 18px;font-size:14px}
.float-cta__icon{
  width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--t-2);transition:all var(--dur-2) var(--ease);
}
.float-cta__icon:hover{color:var(--c-primary);border-color:rgba(47,212,240,.45);background:rgba(47,212,240,.08)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .wall{column-count:2}
  .symptom-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  :root{--sp-7:72px}
  .hero__inner{grid-template-columns:1fr;gap:var(--sp-5)}
  .hero__media{max-width:640px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:var(--sp-4)}
  .nav__menu{display:none}
  .nav__burger{display:flex}
  .nav__cta{display:none}
}
@media (max-width:767px){
  :root{--sp-7:56px;--fs-h1:30px;--fs-h2:24px;--fs-h3:18px;--fs-body:16px}
  body{padding-bottom:64px}
  .container{padding:0 16px}
  .info-bar{height:32px;line-height:32px}
  .info-bar__mid{display:none}
  .nav__inner{height:56px}
  .logo__sub{display:none}
  .wall{column-count:1}
  .symptom-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .cta-band{padding:var(--sp-5) var(--sp-4)}
  .cta-band__txt h2{font-size:21px}
  .hero__tag{left:12px;bottom:-14px}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;padding:8px 12px 8px;
    justify-content:space-between;transform:translateY(100%);
    padding-bottom:calc(8px + env(safe-area-inset-bottom));
  }
  .float-cta.is-show{transform:translateY(0)}
  .float-cta .btn{flex:1}
}
@media (max-width:520px){
  :root{--fs-h1:26px;--fs-h2:22px}
  .card{padding:16px}
  .stat-row{gap:var(--sp-4)}
  .footer__grid{grid-template-columns:1fr}
  .hero__actions .btn{width:100%}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important}
  .btn:hover{transform:none}
  .card:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --bg-0:#05070D;
  --bg-1:#0A0F1A;
  --bg-2:#101827;
  --c-primary:#2FD4F0;
  --c-primary-2:#4CE0B3;
  --c-accent:#7C6CFF;
  --c-highlight:#FFB454;
  --t-1:#E9F2FA;
  --t-2:#A5B6C9;
  --t-3:#6B7C93;
  --line:rgba(120,190,230,0.14);
  --line-strong:rgba(120,190,230,0.30);
  --glass:rgba(255,255,255,0.055);
  --glass-2:rgba(255,255,255,0.085);

  --r-lg:24px;
  --r-md:20px;
  --r-sm:16px;
  --r-xs:12px;
  --r-pill:999px;

  --shadow-1:0 18px 40px -18px rgba(0,0,0,0.7);
  --shadow-2:0 24px 60px -22px rgba(0,0,0,0.8);
  --glow:0 0 0 1px rgba(47,212,240,0.25), 0 0 28px -6px rgba(47,212,240,0.45);
  --glow-2:0 0 0 1px rgba(47,212,240,0.35), 0 0 36px -4px rgba(47,212,240,0.55);

  --sp-1:8px;
  --sp-2:12px;
  --sp-3:16px;
  --sp-4:24px;
  --sp-5:32px;
  --sp-6:48px;
  --sp-7:72px;
  --sp-8:96px;

  --fs-hero:56px;
  --fs-h1:36px;
  --fs-h2:28px;
  --fs-h3:20px;
  --fs-body:16.5px;
  --fs-sm:14px;
  --fs-badge:12px;

  --ease:cubic-bezier(0.22,0.61,0.36,1);
  --d-1:200ms;
  --d-2:240ms;
  --d-3:600ms;

  --font: "Noto Sans SC","Source Han Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --maxw:1240px;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:var(--font);
  font-size:var(--fs-body);
  line-height:1.75;
  font-weight:400;
  letter-spacing:0;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--t-2);text-decoration:none;transition:color var(--d-1) var(--ease),border-color var(--d-1) var(--ease);}
a:hover{color:var(--c-primary);}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,h5,h6{margin:0 0 0.5em;font-weight:800;letter-spacing:-0.01em;line-height:1.3;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0 0 1.1em;padding-left:1.2em;}
hr{border:0;border-top:1px solid var(--line);margin:var(--sp-6) 0;}
table{border-collapse:collapse;width:100%;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(47,212,240,0.28);color:var(--t-1);}

/* ---------- foundation 覆盖 ---------- */
.button,.button:focus{
  background:transparent;border:1px solid var(--c-primary);
  color:var(--c-primary);border-radius:var(--r-pill);
  font-weight:700;letter-spacing:0;transition:all var(--d-1) var(--ease);
}
.button:hover{background:rgba(47,212,240,0.12);color:var(--c-primary);}
.card{background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);padding:var(--sp-4);color:var(--t-1);}
.top-bar{background:transparent;color:var(--t-1);}
.accordion,.accordion-item,.accordion-title,.accordion-content{background:transparent;border:0;color:var(--t-1);}
.tabs,.tabs-title>a,.tabs-content{border:0;background:transparent;color:var(--t-2);}
.tabs-title>a{padding:0;}
input[type="text"],input[type="email"],input[type="search"],textarea{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-xs);
  color:var(--t-1);padding:12px 16px;height:auto;box-shadow:none;
  transition:border-color var(--d-1) var(--ease),box-shadow var(--d-1) var(--ease);
}
input::placeholder,textarea::placeholder{color:var(--t-3);}
input:focus,textarea:focus{border-color:rgba(47,212,240,0.55);box-shadow:0 0 0 3px rgba(47,212,240,0.14);}
.grid-container{padding-left:0;padding-right:0;}
.grid-x{margin-left:0;margin-right:0;}
.cell{padding-left:0;padding-right:0;}

/* ---------- 布局 ---------- */
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 24px;
}
main{display:block;}
.section{position:relative;padding:var(--sp-8) 0;}
.section--tight{padding:var(--sp-7) 0;}
.section--alt{background:var(--bg-1);}
.section__glow{
  position:absolute;width:760px;height:760px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,212,240,0.16),transparent 62%);
  filter:blur(8px);pointer-events:none;z-index:0;
}
.section__glow--accent{background:radial-gradient(circle,rgba(124,108,255,0.16),transparent 62%);}
.section > .container{position:relative;z-index:1;}

.section__head{max-width:760px;margin-bottom:var(--sp-6);}
.section__head--center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:var(--fs-badge);letter-spacing:0.12em;text-transform:uppercase;
  color:var(--c-primary);background:rgba(47,212,240,0.10);
  border:1px solid rgba(47,212,240,0.22);border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:var(--sp-3);font-weight:700;
}
.h2{font-size:var(--fs-h2);margin-bottom:var(--sp-2);}
.h3{font-size:var(--fs-h3);margin-bottom:var(--sp-1);}
.lead{color:var(--t-2);font-size:var(--fs-body);}
.muted{color:var(--t-3);font-size:var(--fs-sm);}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:#03050A;
  border-bottom:1px solid rgba(120,190,230,0.08);
  min-height:36px;
  font-size:var(--fs-badge);
}
.topbar__inner{
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);
  min-height:36px;
}
.topbar__note{color:var(--t-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar__ticker{color:var(--t-3);flex:1;text-align:center;overflow:hidden;white-space:nowrap;}
.topbar__ticker span{color:var(--t-2);}
.topbar__links{display:flex;align-items:center;gap:var(--sp-4);font-size:13px;}
.topbar__links a{color:var(--t-2);}
.topbar__links a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,7,13,0.72);
  border-bottom:1px solid transparent;
  transition:background var(--d-1) var(--ease),backdrop-filter var(--d-1) var(--ease),border-color var(--d-1) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,9,16,0.66);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:transparent;
}
.site-header.is-scrolled::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,212,240,0.55),transparent);
}
.nav__inner{
  display:flex;align-items:center;gap:var(--sp-4);
  height:68px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo__mark{width:34px;height:34px;flex:0 0 auto;}
.logo__mark circle,.logo__mark path{stroke:var(--c-primary);}
.logo__text{display:flex;flex-direction:column;line-height:1.15;}
.logo__name{font-size:17px;font-weight:800;color:var(--t-1);letter-spacing:-0.01em;}
.logo__sub{font-size:11px;color:var(--t-3);letter-spacing:0.04em;}
.logo:hover .logo__name{color:var(--c-primary);}

.nav__menu{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav__link{
  position:relative;display:inline-flex;align-items:center;height:68px;
  padding:0 14px;font-size:14.5px;color:var(--t-2);font-weight:500;
}
.nav__link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;border-radius:2px;
  background:var(--c-primary);opacity:0;transform:scaleX(0.4);
  transition:opacity var(--d-1) var(--ease),transform var(--d-1) var(--ease);
  box-shadow:0 0 12px rgba(47,212,240,0.85);
}
.nav__link:hover{color:var(--t-1);}
.nav__link:hover::after{opacity:0.55;transform:scaleX(1);}
.nav__link.is-active{color:var(--t-1);}
.nav__link.is-active::after{opacity:1;transform:scaleX(1);}
.nav__right{display:flex;align-items:center;gap:var(--sp-2);}

.nav__burger{
  display:none;width:42px;height:42px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer;
  transition:border-color var(--d-1) var(--ease),background var(--d-1) var(--ease);
}
.nav__burger:hover{border-color:var(--line-strong);}
.nav__burger span{display:block;width:18px;height:2px;background:var(--t-1);border-radius:2px;transition:transform var(--d-1) var(--ease),opacity var(--d-1) var(--ease);}
.nav__burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav__burger.is-open span:nth-child(2){opacity:0;}
.nav__burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* 移动抽屉 */
.mobile-panel{
  position:fixed;inset:0;z-index:70;
  background:rgba(5,8,14,0.86);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  transform:translateX(100%);opacity:0;pointer-events:none;
  transition:transform var(--d-2) var(--ease),opacity var(--d-2) var(--ease);
  display:flex;flex-direction:column;
}
.mobile-panel.is-open{transform:translateX(0);opacity:1;pointer-events:auto;}
.mobile-panel__top{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line);}
.mobile-panel__close{
  width:40px;height:40px;border-radius:12px;background:var(--glass);border:1px solid var(--line);
  color:var(--t-1);cursor:pointer;font-size:16px;
}
.mobile-panel__list{flex:1;overflow-y:auto;padding:12px 12px 0;}
.mobile-panel__list a{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;padding:0 14px;border-radius:14px;
  color:var(--t-1);font-size:16px;font-weight:600;
}
.mobile-panel__list a:hover,.mobile-panel__list a.is-active{background:var(--glass);color:var(--c-primary);}
.mobile-panel__list a i{font-size:13px;color:var(--t-3);}
.mobile-panel__foot{padding:16px 20px calc(20px + env(safe-area-inset-bottom));border-top:1px solid var(--line);}

/* ---------- 按钮 ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:0;cursor:pointer;
  border:1px solid transparent;overflow:hidden;
  transition:transform var(--d-1) var(--ease),box-shadow var(--d-1) var(--ease),background var(--d-1) var(--ease),color var(--d-1) var(--ease),border-color var(--d-1) var(--ease);
}
.btn::before{
  content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,0.35),transparent);
  transform:skewX(-18deg);transition:left var(--d-3) var(--ease);
}
.btn:hover::before{left:130%;}
.btn-primary{
  background:linear-gradient(120deg,var(--c-primary) 0%,var(--c-primary-2) 100%);
  color:#04202A;box-shadow:var(--glow);
}
.btn-primary:hover{color:#04202A;transform:translateY(-2px);box-shadow:var(--glow-2);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--glow);}
.btn-outline{
  background:transparent;border-color:rgba(47,212,240,0.5);color:var(--c-primary);
}
.btn-outline:hover{background:rgba(47,212,240,0.10);color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--glow);}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;border:0;color:var(--c-primary);padding:0 4px;height:auto;
}
.btn-ghost i{transition:transform var(--d-1) var(--ease);}
.btn-ghost:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px;}
.btn-ghost:hover i{transform:translateX(4px);}
.btn-block{width:100%;}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:var(--sp-8) 0 var(--sp-7);
  background:var(--bg-0);
}
.hero__bg{
  position:absolute;inset:0;
  background-image:
    linear-gradient(180deg,rgba(5,7,13,0.86) 0%,rgba(5,7,13,0.72) 45%,rgba(5,7,13,0.96) 100%),
    linear-gradient(120deg,rgba(47,212,240,0.10),rgba(124,108,255,0.10)),
    url("/assets/images/backpic/back-2.png");
  background-size:cover,cover,cover;
  background-position:center,center,center;
  opacity:0.9;
}
.hero__grid-lines{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,190,230,0.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,190,230,0.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,0.9),transparent 85%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,0.9),transparent 85%);
}
.hero__inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr 1fr;gap:var(--sp-6);align-items:center;}
.hero__title{
  font-size:var(--fs-h1);
  line-height:1.24;
  margin-bottom:var(--sp-3);
}
.hero__title em{
  font-style:normal;
  background:linear-gradient(100deg,var(--c-primary),var(--c-primary-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__sub{color:var(--t-2);font-size:16px;max-width:600px;margin-bottom:var(--sp-4);}
.hero__actions{display:flex;flex-wrap:wrap;gap:var(--sp-2);margin-bottom:var(--sp-5);}
.hero__stats{display:flex;flex-wrap:wrap;gap:var(--sp-5);}
.stat__num{
  font-size:28px;font-weight:800;line-height:1.25;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(100deg,var(--c-primary),var(--c-primary-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat__label{font-size:var(--fs-badge);color:var(--t-3);letter-spacing:0.04em;}

.hero__media{position:relative;}
.media-frame{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);background:var(--glass);
  box-shadow:var(--shadow-2);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 45%,rgba(5,7,13,0.72) 100%);
}
.media-frame img{width:100%;height:100%;object-fit:cover;display:block;}
.media-frame--4x3{aspect-ratio:4/3;}
.media-frame--16x9{aspect-ratio:16/9;}
.hero__badge-card{
  position:absolute;right:-14px;bottom:-22px;
  width:210px;padding:16px 18px;border-radius:var(--r-sm);
  background:rgba(10,15,26,0.88);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-2);
}
.hero__badge-card .k{font-size:var(--fs-badge);color:var(--t-3);letter-spacing:0.06em;}
.hero__badge-card .v{font-size:20px;font-weight:800;color:var(--c-primary-2);font-variant-numeric:tabular-nums;}

/* ---------- 标签 / 印章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:var(--fs-badge);font-weight:700;line-height:1;
  padding:6px 12px;border-radius:var(--r-pill);
  color:var(--c-primary);background:rgba(47,212,240,0.12);
  border:1px solid rgba(47,212,240,0.22);
}
.badge--warn{color:var(--c-highlight);background:rgba(255,180,84,0.12);border-color:rgba(255,180,84,0.28);}
.badge--mint{color:var(--c-primary-2);background:rgba(76,224,179,0.12);border-color:rgba(76,224,179,0.24);}
.stamp{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:56px;height:56px;padding:0 8px;border-radius:10px;
  border:1px solid rgba(255,180,84,0.42);color:var(--c-highlight);
  font-size:13px;font-weight:800;letter-spacing:0.08em;line-height:1.15;text-align:center;
  background:rgba(255,180,84,0.06);
}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:var(--fs-badge);color:var(--t-3);margin-bottom:var(--sp-4);}
.crumbs a{color:var(--t-3);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs span.sep{color:rgba(120,190,230,0.32);}
.crumbs .current{color:var(--t-2);}

/* ---------- 时间轴 ---------- */
.timeline-wrap{position:relative;}
.timeline{
  position:relative;
  display:grid;grid-template-columns:280px 1fr;gap:var(--sp-6);
  align-items:start;
}
.timeline__side{position:sticky;top:104px;}
.timeline__side .h2{margin-bottom:var(--sp-2);}
.timeline__side p{color:var(--t-2);font-size:15px;}
.timeline__legend{
  margin-top:var(--sp-4);padding:18px 20px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--line);
}
.timeline__legend .row{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--t-2);}
.timeline__legend .row + .row{margin-top:10px;}
.dot{width:10px;height:10px;border-radius:50%;flex:0 0 auto;}
.dot--a{background:var(--c-primary);box-shadow:0 0 10px rgba(47,212,240,0.8);}
.dot--b{background:var(--c-primary-2);box-shadow:0 0 10px rgba(76,224,179,0.7);}
.dot--c{background:var(--c-highlight);box-shadow:0 0 10px rgba(255,180,84,0.6);}

.timeline__rail{position:relative;padding-left:56px;}
.timeline__rail::before{
  content:"";position:absolute;left:17px;top:12px;bottom:12px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(47,212,240,0.75),rgba(76,224,179,0.45) 55%,rgba(47,212,240,0.10));
  box-shadow:0 0 18px rgba(47,212,240,0.45);
}

.step{position:relative;margin-bottom:var(--sp-4);}
.step:last-child{margin-bottom:0;}
.step__node{
  position:absolute;left:-56px;top:26px;
  width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:800;font-variant-numeric:tabular-nums;
  color:var(--t-3);background:var(--bg-2);
  border:2px solid var(--line);
  transition:all var(--d-2) var(--ease);
  z-index:2;
}
.step__node::after{
  content:"";position:absolute;inset:-7px;border-radius:50%;
  border:1px solid rgba(47,212,240,0.0);
  transition:border-color var(--d-2) var(--ease);
}
.step.is-active .step__node{
  color:#04202A;background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));
  border-color:rgba(47,212,240,0.6);box-shadow:0 0 22px -2px rgba(47,212,240,0.75);
}
.step.is-active .step__node::after{border-color:rgba(47,212,240,0.35);}

.step-card{
  position:relative;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);
  padding:var(--sp-4);
  box-shadow:var(--shadow-1);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  transition:transform var(--d-2) var(--ease),border-color var(--d-2) var(--ease),box-shadow var(--d-2) var(--ease);
}
.step-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,0.28),transparent);
}
.step-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-2),var(--glow);}
.step.is-active .step-card{border-color:rgba(47,212,240,0.42);box-shadow:var(--shadow-2),var(--glow);}
.step-card__head{display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap;}
.step-card__num{
  font-size:26px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums;
  color:rgba(120,190,230,0.26);letter-spacing:-0.02em;
}
.step-card__body{display:grid;grid-template-columns:1fr 240px;gap:var(--sp-4);align-items:start;}
.step-card__text{color:var(--t-2);font-size:15px;}
.step-card__points{margin:12px 0 0;padding:0;list-style:none;}
.step-card__points li{position:relative;padding-left:18px;font-size:14px;color:var(--t-2);margin-bottom:8px;}
.step-card__points li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--c-primary);box-shadow:0 0 8px rgba(47,212,240,0.7);
}
.step-card__media{border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line);background:var(--glass);}
.step-card__media img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;}
.step-card--noimg .step-card__body{grid-template-columns:1fr;}

/* ---------- 场景 / 指标 ---------- */
.split{display:grid;grid-template-columns:1.15fr 1fr;gap:var(--sp-5);align-items:start;}
.panel{
  position:relative;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);
  padding:var(--sp-5);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-1);
}
.panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,0.26),transparent);
}
.panel__title{font-size:var(--fs-h3);margin-bottom:var(--sp-2);}
.scene-list{display:grid;gap:14px;margin-top:var(--sp-3);}
.scene{display:flex;gap:14px;padding:14px;border-radius:var(--r-sm);background:rgba(255,255,255,0.03);border:1px solid var(--line);transition:border-color var(--d-2) var(--ease),transform var(--d-2) var(--ease);}
.scene:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.scene__ico{
  width:38px;height:38px;flex:0 0 auto;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,212,240,0.10);border:1px solid rgba(47,212,240,0.22);color:var(--c-primary);
}
.scene__t{font-size:15px;font-weight:700;margin-bottom:2px;}
.scene__d{font-size:13.5px;color:var(--t-3);line-height:1.65;}

.metric-stack{display:grid;gap:14px;}
.metric{
  border-radius:var(--r-sm);padding:18px 20px;
  background:rgba(255,255,255,0.04);border:1px solid var(--line);
  transition:border-color var(--d-2) var(--ease),transform var(--d-2) var(--ease);
}
.metric:hover{border-color:rgba(47,212,240,0.38);transform:translateY(-2px);}
.metric__num{font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--c-primary);line-height:1.2;}
.metric__num--mint{color:var(--c-primary-2);}
.metric__label{font-size:var(--fs-badge);color:var(--t-3);letter-spacing:0.04em;margin-top:2px;}
.metric__desc{font-size:13.5px;color:var(--t-2);margin-top:8px;}

.quote{
  margin-top:var(--sp-4);position:relative;padding:22px 24px 20px 46px;
  border-radius:var(--r-sm);background:var(--glass);border:1px solid var(--line);
}
.quote::before{
  content:"“";position:absolute;left:16px;top:6px;font-size:52px;line-height:1;
  color:rgba(47,212,240,0.45);font-family:var(--font);
}
.quote p{font-size:15px;color:var(--t-2);}
.quote .src{font-size:var(--fs-badge);color:var(--t-3);margin-top:8px;}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;}
.faq__item{
  border-radius:var(--r-sm);background:var(--glass);border:1px solid var(--line);
  overflow:hidden;transition:border-color var(--d-2) var(--ease),background var(--d-2) var(--ease);
}
.faq__item:hover{border-color:var(--line-strong);}
.faq__item.is-open{border-color:rgba(47,212,240,0.42);background:rgba(47,212,240,0.05);}
.faq__q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  background:transparent;border:0;cursor:pointer;padding:20px 22px;color:var(--t-1);
}
.faq__idx{font-size:13px;font-weight:800;color:var(--t-3);font-variant-numeric:tabular-nums;flex:0 0 auto;}
.faq__q h3{font-size:16.5px;margin:0;flex:1;font-weight:700;}
.faq__ico{color:var(--c-primary);font-size:14px;transition:transform var(--d-2) var(--ease);flex:0 0 auto;}
.faq__item.is-open .faq__ico{transform:rotate(180deg);}
.faq__a{max-height:0;overflow:hidden;transition:max-height var(--d-2) var(--ease);}
.faq__a-inner{padding:0 22px 20px 60px;font-size:15px;line-height:1.85;color:var(--t-2);}

/* ---------- 分类胶囊 ---------- */
.cat-pills{display:flex;flex-wrap:wrap;gap:12px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line);
  color:var(--t-2);font-size:14px;font-weight:600;
  transition:all var(--d-2) var(--ease);
}
.pill i{font-size:12px;color:var(--c-primary);transition:transform var(--d-1) var(--ease);}
.pill:hover{color:var(--t-1);border-color:rgba(47,212,240,0.45);background:rgba(47,212,240,0.08);transform:translateY(-2px);box-shadow:var(--glow);}
.pill:hover i{transform:translateX(3px);}
.pill.is-current{border-color:rgba(47,212,240,0.5);color:var(--c-primary);background:rgba(47,212,240,0.10);}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:
    linear-gradient(120deg,rgba(47,212,240,0.10),rgba(124,108,255,0.10)),
    url("/assets/images/backpic/back-3.webp");
  background-size:cover,cover;
  background-position:center,center;
  padding:var(--sp-6) var(--sp-5);
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);flex-wrap:wrap;
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-2);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(600px 300px at 88% 20%,rgba(47,212,240,0.18),transparent 65%);
}
.cta-band__text{position:relative;z-index:1;max-width:620px;}
.cta-band__title{font-size:var(--fs-h2);margin-bottom:8px;}
.cta-band__sub{color:var(--t-2);font-size:15px;}
.cta-band__actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:50;
  display:flex;align-items:center;gap:8px;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity var(--d-2) var(--ease),transform var(--d-2) var(--ease);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta__main{
  display:inline-flex;align-items:center;gap:8px;height:56px;padding:0 24px;border-radius:var(--r-pill);
  background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));
  color:#04202A;font-weight:800;font-size:15px;box-shadow:var(--glow);
  transition:transform var(--d-1) var(--ease),box-shadow var(--d-1) var(--ease);
}
.float-cta__main:hover{color:#04202A;transform:translateY(-2px);box-shadow:var(--glow-2);}
.float-cta__icon{
  width:56px;height:56px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(10,15,26,0.86);border:1px solid var(--line-strong);color:var(--t-1);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  transition:border-color var(--d-1) var(--ease),color var(--d-1) var(--ease),transform var(--d-1) var(--ease);
}
.float-cta__icon:hover{color:var(--c-primary);border-color:rgba(47,212,240,0.55);transform:translateY(-2px);}
.float-bar{display:none;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  background:var(--bg-1);
  border-top:1px solid transparent;
  padding:var(--sp-7) 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,212,240,0.5),transparent);
}
.site-footer::after{
  content:"";position:absolute;left:-160px;bottom:-260px;width:720px;height:720px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,108,255,0.14),transparent 62%);
  pointer-events:none;
}
.footer__grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:var(--sp-5);
  padding-bottom:var(--sp-6);
}
.footer__col h3{font-size:15px;color:var(--t-1);margin-bottom:var(--sp-3);font-weight:700;}
.footer__brand-desc{color:var(--t-3);font-size:13.5px;line-height:1.8;margin:var(--sp-3) 0 var(--sp-3);max-width:320px;}
.footer__social{display:flex;gap:16px;font-size:13px;}
.footer__social a{color:var(--t-2);}
.footer__social a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.footer__links{display:grid;gap:10px;}
.footer__links a{color:var(--t-2);font-size:14px;}
.footer__links a:hover{color:var(--c-primary);}
.footer__form{display:grid;gap:12px;}
.footer__form input{width:100%;}
.footer__form .hint{font-size:12px;color:var(--t-3);line-height:1.6;}
.footer__bottom{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 calc(24px + env(safe-area-inset-bottom));
  border-top:1px solid var(--line);
  font-size:12.5px;color:var(--t-3);
}
.footer__bottom a{color:var(--t-3);}
.footer__bottom a:hover{color:var(--c-primary);}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:96px;z-index:49;
  width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(10,15,26,0.86);border:1px solid var(--line);color:var(--t-2);
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:all var(--d-2) var(--ease);cursor:pointer;
}
.to-top.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.to-top:hover{color:var(--c-primary);border-color:rgba(47,212,240,0.5);}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  .section__glow{width:900px;height:900px;}
}
@media (max-width:1199px){
  .hero__inner{gap:var(--sp-5);}
  .step-card__body{grid-template-columns:1fr 200px;}
  .footer__grid{grid-template-columns:1.3fr 1fr 1fr;row-gap:var(--sp-5);}
  .footer__col--form{grid-column:span 3;}
}
@media (max-width:1023px){
  :root{--fs-h1:32px;--fs-h2:25px;--fs-h3:19px;--fs-hero:44px;}
  .section{padding:var(--sp-7) 0;}
  .nav__menu{display:none;}
  .nav__burger{display:flex;}
  .hero__inner{grid-template-columns:1fr;}
  .hero__media{max-width:620px;}
  .hero__badge-card{right:8px;bottom:-18px;}
  .timeline{grid-template-columns:1fr;}
  .timeline__side{position:static;top:auto;}
  .split{grid-template-columns:1fr;}
  .step-card__body{grid-template-columns:1fr;}
  .footer__grid{grid-template-columns:1fr 1fr;}
  .footer__col--form{grid-column:span 2;}
}
@media (max-width:767px){
  :root{--fs-h1:28px;--fs-h2:23px;--fs-h3:18px;--fs-body:16px;--fs-hero:44px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .topbar__ticker{display:none;}
  .topbar__note{font-size:11px;}
  .nav__inner{height:56px;}
  .nav__cta{display:none;}
  .logo__sub{display:none;}
  body{padding-bottom:72px;}
  .float-cta{display:none;}
  .float-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:55;
    height:56px;padding:0 16px calc(0px + env(safe-area-inset-bottom));
    align-items:center;justify-content:space-between;gap:12px;
    background:rgba(6,9,16,0.92);
    backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    border-top:1px solid rgba(120,190,230,0.18);
  }
  .float-bar__label{font-size:13px;color:var(--t-2);}
  .float-bar .btn{height:40px;padding:0 18px;font-size:14px;}
  .to-top{display:none;}
  .hero{padding:48px 0 56px;}
  .hero__stats{gap:var(--sp-4);}
  .timeline__rail{padding-left:44px;}
  .timeline__rail::before{left:12px;}
  .step__node{left:-44px;width:30px;height:30px;font-size:11px;top:22px;}
  .step-card{padding:20px;}
  .step-card__num{font-size:22px;}
  .faq__a-inner{padding-left:22px;}
  .cta-band{padding:var(--sp-5) var(--sp-4);border-radius:var(--r-md);}
  .footer__grid{grid-template-columns:1fr;}
  .footer__col--form{grid-column:span 1;}
  .footer__bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:479px){
  :root{--fs-h1:25px;--fs-h2:21px;}
  .step-card{padding:16px;}
  .panel{padding:20px;}
  .hero__badge-card{position:static;width:100%;margin-top:16px;}
  .hero__actions .btn{width:100%;}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .btn::before{display:none;}
}

/* roulang page: category4 */
/* ============ 设计变量 ============ */
:root{
  --bg-0:#05070D;
  --bg-1:#0A0F1A;
  --bg-2:#101827;
  --c-primary:#2FD4F0;
  --c-primary-2:#4CE0B3;
  --c-accent:#7C6CFF;
  --c-highlight:#FFB454;
  --t-1:#E9F2FA;
  --t-2:#A5B6C9;
  --t-3:#6B7C93;
  --line:rgba(120,190,230,0.14);
  --line-strong:rgba(120,190,230,0.28);
  --glass:rgba(255,255,255,0.055);
  --glass-strong:rgba(255,255,255,0.09);
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
  --radius-xs:8px;
  --shadow:0 18px 40px -18px rgba(0,0,0,0.7);
  --shadow-hover:0 24px 52px -20px rgba(0,0,0,0.78);
  --glow:0 0 0 1px rgba(47,212,240,0.25), 0 0 28px -6px rgba(47,212,240,0.45);
  --glow-soft:0 0 0 1px rgba(47,212,240,0.16), 0 0 20px -8px rgba(47,212,240,0.35);
  --ease:cubic-bezier(0.22,0.61,0.36,1);
  --t-fast:200ms;
  --t-mid:240ms;
  --t-slow:600ms;
  --sp-2:8px;
  --sp-3:12px;
  --sp-4:16px;
  --sp-6:24px;
  --sp-8:32px;
  --sp-12:48px;
  --container:1240px;
  --fs-h1:36px;
  --fs-h2:28px;
  --fs-h3:20px;
  --fs-body:17px;
  --fs-sm:14px;
  --fs-badge:12px;
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:"Noto Sans SC","HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:var(--fs-body);
  line-height:1.75;
  font-weight:400;
  letter-spacing:0;
  overflow-x:hidden;
  background-image:
    radial-gradient(900px 620px at 12% -6%, rgba(47,212,240,0.10), transparent 62%),
    radial-gradient(760px 560px at 92% 8%, rgba(124,108,255,0.10), transparent 66%),
    linear-gradient(180deg, rgba(255,255,255,0.012) 0%, rgba(255,255,255,0) 40%);
  background-repeat:no-repeat;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--t-2);text-decoration:none;transition:color var(--t-fast) var(--ease),text-decoration-color var(--t-fast) var(--ease);}
a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px;}
h1,h2,h3,h4,h5,h6{margin:0 0 var(--sp-4);font-weight:700;letter-spacing:-0.01em;line-height:1.32;color:var(--t-1);}
h1{font-size:var(--fs-h1);font-weight:800;}
h2{font-size:var(--fs-h2);}
h3{font-size:var(--fs-h3);}
p{margin:0 0 var(--sp-4);color:var(--t-2);}
ul,ol{margin:0 0 var(--sp-4);padding-left:1.2em;color:var(--t-2);}
li{margin-bottom:var(--sp-2);}
hr{border:0;border-top:1px solid var(--line);margin:var(--sp-8) 0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(47,212,240,0.28);color:#fff;}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* Foundation 覆盖 */
body,button,input,select,textarea{font-family:"Noto Sans SC","HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;}
.button,.button.primary,.button.secondary{
  background:none;color:var(--t-1);border:0;padding:0;margin:0;
  font-size:var(--fs-body);line-height:1.6;border-radius:999px;
}
.card{background:transparent;border:0;padding:0;margin:0;box-shadow:none;}
.grid-x>.cell{min-width:0;}
table{border-collapse:collapse;width:100%;}
.top-bar,.top-bar ul{background:transparent;}

/* ============ 布局容器 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:var(--sp-6);
  padding-right:var(--sp-6);
}
.section{
  position:relative;
  padding-top:96px;
  padding-bottom:96px;
}
.section--tight{padding-top:72px;padding-bottom:72px;}
.section--alt{background:var(--bg-1);}
.section--line{border-top:1px solid var(--line);}
.spot{
  position:absolute;
  width:760px;height:760px;
  border-radius:50%;
  filter:blur(60px);
  opacity:0.5;
  pointer-events:none;
  z-index:0;
}
.spot--cyan{background:radial-gradient(circle, rgba(47,212,240,0.20), transparent 66%);top:-260px;left:-240px;}
.spot--violet{background:radial-gradient(circle, rgba(124,108,255,0.18), transparent 68%);bottom:-300px;right:-260px;}
.section>.container{position:relative;z-index:1;}

/* ============ 顶部信息条 ============ */
.topbar{
  background:#03050A;
  border-bottom:1px solid var(--line);
  min-height:36px;
  font-size:13px;
}
.topbar__inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:var(--sp-4);
  min-height:36px;
}
.topbar__left{
  font-size:12px;color:var(--t-3);letter-spacing:0.02em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.topbar__center{
  color:var(--t-3);font-size:12px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.topbar__right{display:flex;align-items:center;gap:var(--sp-4);}
.topbar__link{font-size:13px;color:var(--t-2);}
.topbar__link:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px;}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,7,13,0.72);
  border-bottom:1px solid transparent;
  transition:background var(--t-mid) var(--ease),backdrop-filter var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,10,20,0.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--line);
  box-shadow:0 14px 34px -24px rgba(0,0,0,0.9);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,212,240,0.45),transparent);
  opacity:0;transition:opacity var(--t-mid) var(--ease);
}
.site-header.is-scrolled::after{opacity:1;}
.nav__inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:var(--sp-6);
  min-height:68px;
}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;}
.logo:hover{text-decoration:none;}
.logo__mark{
  width:34px;height:34px;flex:0 0 34px;
  stroke:var(--c-primary);fill:none;
  filter:drop-shadow(0 0 8px rgba(47,212,240,0.35));
}
.logo__text{display:flex;flex-direction:column;line-height:1.15;}
.logo__name{color:var(--t-1);font-weight:700;font-size:17px;letter-spacing:-0.01em;}
.logo__sub{color:var(--t-3);font-size:11px;letter-spacing:0.04em;}
.nav__menu{display:flex;align-items:center;gap:var(--sp-6);}
.nav__link{
  position:relative;
  color:var(--t-2);font-size:15px;padding:6px 2px;
  transition:color var(--t-fast) var(--ease);
  white-space:nowrap;
}
.nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-primary-2));
  box-shadow:0 0 12px rgba(47,212,240,0.6);
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--t-mid) var(--ease);
}
.nav__link:hover{color:var(--t-1);text-decoration:none;}
.nav__link:hover::after{transform:scaleX(1);}
.nav__link.is-active{color:var(--t-1);}
.nav__link.is-active::after{transform:scaleX(1);}
.nav__right{display:flex;align-items:center;gap:var(--sp-3);}
.nav__burger{
  display:none;
  width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:var(--glass);cursor:pointer;
  padding:0;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  transition:border-color var(--t-fast) var(--ease),background var(--t-fast) var(--ease);
}
.nav__burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t-1);transition:transform var(--t-mid) var(--ease),opacity var(--t-mid) var(--ease);}
.nav__burger:hover{border-color:var(--line-strong);background:var(--glass-strong);}
.nav__burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav__burger.is-open span:nth-child(2){opacity:0;}
.nav__burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;
  border-radius:999px;
  font-size:15px;font-weight:600;
  cursor:pointer;position:relative;overflow:hidden;
  transition:transform var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease),background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
  text-decoration:none;border:1px solid transparent;
}
.btn:hover{text-decoration:none;transform:translateY(-2px);}
.btn:active{transform:translateY(1px);}
.btn-primary{
  background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-primary-2) 100%);
  color:#04202A;
  box-shadow:var(--glow);
}
.btn-primary:hover{color:#04202A;box-shadow:0 0 0 1px rgba(47,212,240,0.4),0 0 36px -4px rgba(47,212,240,0.6);}
.btn-ghost{
  background:transparent;color:var(--c-primary);border-color:rgba(47,212,240,0.45);
}
.btn-ghost:hover{color:var(--c-primary);border-color:var(--c-primary);box-shadow:var(--glow-soft);}
.btn-text{
  background:none;border:0;padding:0 4px;min-height:auto;color:var(--c-primary);font-weight:600;
}
.btn-text:hover{color:var(--c-primary-2);}
.btn-text .arrow{display:inline-block;transition:transform var(--t-mid) var(--ease);}
.btn-text:hover .arrow{transform:translateX(4px);}
.btn-block{width:100%;}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:var(--fs-badge);line-height:1;
  padding:7px 12px;border-radius:999px;
  background:rgba(47,212,240,0.12);
  color:var(--c-primary);
  border:1px solid rgba(47,212,240,0.2);
  letter-spacing:0.02em;
  white-space:nowrap;
}
.badge--green{background:rgba(76,224,179,0.12);color:var(--c-primary-2);border-color:rgba(76,224,179,0.22);}
.badge--amber{background:rgba(255,180,84,0.13);color:var(--c-highlight);border-color:rgba(255,180,84,0.26);}
.badge--violet{background:rgba(124,108,255,0.14);color:#B4AAFF;border-color:rgba(124,108,255,0.26);}
.seal{
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;letter-spacing:0.08em;
  padding:6px 10px;border-radius:6px;
  color:var(--c-primary-2);
  border:1px solid rgba(76,224,179,0.35);
  background:rgba(76,224,179,0.08);
}

/* ============ 玻璃面板 ============ */
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,0.06);
}

/* ============ 内页 Hero ============ */
.page-hero{
  position:relative;
  padding:72px 0 64px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero__bg{
  position:absolute;inset:0;
  z-index:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:0.30;
  filter:saturate(0.8);
}
.page-hero__bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg, rgba(5,7,13,0.86) 0%, rgba(5,7,13,0.94) 60%, var(--bg-0) 100%),
    repeating-linear-gradient(115deg, rgba(255,255,255,0.028) 0 1px, transparent 1px 9px);
}
.page-hero__inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.15fr 0.85fr;
  gap:var(--sp-12);align-items:center;
}
.page-hero__eyebrow{display:flex;align-items:center;gap:12px;margin-bottom:var(--sp-4);}
.page-hero h1{max-width:15em;}
.page-hero__lead{font-size:17px;color:var(--t-2);max-width:34em;margin-top:var(--sp-3);}
.page-hero__actions{display:flex;flex-wrap:wrap;gap:var(--sp-3);margin-top:var(--sp-8);}
.page-hero__stats{
  display:flex;flex-wrap:wrap;gap:var(--sp-8);
  margin-top:var(--sp-8);padding-top:var(--sp-6);
  border-top:1px solid var(--line);
}
.stat__num{
  font-size:26px;font-weight:700;line-height:1.25;
  font-variant-numeric:tabular-nums;
  color:var(--t-1);
  letter-spacing:-0.01em;
}
.stat__num em{font-style:normal;font-size:15px;color:var(--t-3);margin-left:4px;font-weight:500;}
.stat__label{font-size:12px;color:var(--t-3);margin-top:2px;}

.hero-figure{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  aspect-ratio:4/3;
  background:linear-gradient(160deg,rgba(47,212,240,0.12),rgba(124,108,255,0.10));
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,13,0.10) 0%,rgba(5,7,13,0.72) 100%);
}
.hero-figure__cap{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:18px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--t-2);
}
.hero-figure__cap strong{color:var(--t-1);font-weight:600;}

/* ============ 面包屑 ============ */
.crumbs{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:12px;color:var(--t-3);
  margin-bottom:var(--sp-4);
}
.crumbs a{color:var(--t-3);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs .sep{color:rgba(107,124,147,0.7);}
.crumbs .current{color:var(--t-2);}

/* ============ 板块标题 ============ */
.section-head{max-width:720px;margin-bottom:var(--sp-8);}
.section-head__eyebrow{margin-bottom:var(--sp-3);}
.section-head p{font-size:16px;color:var(--t-2);margin-bottom:0;}
.section-head--split{
  max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:var(--sp-6);flex-wrap:wrap;
}

/* ============ 对比表 ============ */
.compare-panel{
  padding:var(--sp-2);
  border-radius:26px;
  background:linear-gradient(180deg,rgba(47,212,240,0.10),rgba(124,108,255,0.06));
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.compare-inner{
  border-radius:22px;
  background:rgba(10,15,26,0.94);
  border:1px solid var(--line);
  overflow:hidden;
}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
.compare-table{width:100%;min-width:720px;border-collapse:separate;border-spacing:0;}
.compare-table th,
.compare-table td{
  padding:18px 20px;
  text-align:left;
  font-size:15px;
  color:var(--t-2);
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
.compare-table thead th{
  font-size:13px;
  letter-spacing:0.04em;
  color:var(--t-1);
  background:rgba(255,255,255,0.045);
  font-weight:600;
  border-bottom:1px solid var(--line-strong);
  white-space:nowrap;
}
.compare-table thead th:first-child{color:var(--t-3);font-weight:500;}
.compare-table tbody th{
  font-weight:600;
  color:var(--t-1);
  background:rgba(255,255,255,0.02);
  white-space:nowrap;
  font-size:14px;
}
.compare-table tbody tr:nth-child(odd) td{background:rgba(255,255,255,0.014);}
.compare-table tbody tr:hover td{background:rgba(47,212,240,0.05);}
.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td{border-bottom:0;}
.cell-hot{
  background:rgba(47,212,240,0.09)!important;
  box-shadow:inset 0 0 0 1px rgba(47,212,240,0.24);
  color:var(--t-1)!important;
  border-radius:10px;
  position:relative;
}
.cell-hot::after{
  content:"";position:absolute;left:12px;right:12px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,212,240,0.6),transparent);
}
.cell-flag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;color:var(--c-highlight);
  background:rgba(255,180,84,0.12);
  border:1px solid rgba(255,180,84,0.24);
  padding:4px 9px;border-radius:999px;
  margin-left:8px;
  white-space:nowrap;
}
.compare-note{
  display:flex;flex-wrap:wrap;gap:var(--sp-6);
  margin-top:var(--sp-6);
  padding:18px 22px;
  border-radius:var(--radius-md);
  background:var(--glass);
  border:1px solid var(--line);
  font-size:14px;color:var(--t-2);
}
.compare-note span{display:inline-flex;align-items:center;gap:8px;}
.dot{width:7px;height:7px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 10px rgba(47,212,240,0.7);flex:0 0 7px;}
.dot--green{background:var(--c-primary-2);box-shadow:0 0 10px rgba(76,224,179,0.7);}
.dot--amber{background:var(--c-highlight);box-shadow:0 0 10px rgba(255,180,84,0.7);}

/* ============ 折叠清单（Accordion） ============ */
.accordion-list{display:flex;flex-direction:column;gap:var(--sp-3);}
.acc-item{
  border-radius:var(--radius-md);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transition:border-color var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease),background var(--t-mid) var(--ease);
  overflow:hidden;
}
.acc-item:hover{border-color:var(--line-strong);}
.acc-item.is-open{
  border-color:rgba(47,212,240,0.35);
  box-shadow:var(--glow-soft);
  background:var(--glass-strong);
}
.acc-head{
  width:100%;
  display:flex;align-items:center;gap:var(--sp-4);
  padding:18px 22px;
  background:none;border:0;cursor:pointer;text-align:left;
  color:var(--t-1);
}
.acc-index{
  font-size:13px;font-variant-numeric:tabular-nums;
  color:var(--t-3);font-weight:600;flex:0 0 28px;
}
.acc-title{
  flex:1 1 auto;font-size:17px;font-weight:600;color:var(--t-1);line-height:1.5;
  letter-spacing:-0.01em;
}
.acc-arrow{
  flex:0 0 22px;width:22px;height:22px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-primary);
  transition:transform var(--t-mid) var(--ease);
}
.acc-item.is-open .acc-arrow{transform:rotate(180deg);}
.acc-body{
  max-height:0;overflow:hidden;
  transition:max-height var(--t-mid) var(--ease);
}
.acc-body__inner{
  padding:0 22px 20px 74px;
  font-size:15px;line-height:1.85;color:var(--t-2);
  border-top:1px solid transparent;
}
.acc-body__inner p:last-child{margin-bottom:0;}
.acc-body__inner ul{margin-top:10px;margin-bottom:0;}
.acc-body__inner li{font-size:15px;line-height:1.8;}

/* ============ 三列清单卡（要点卡） ============ */
.point-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-6);
  margin-top:var(--sp-8);
}
.point-card{
  padding:var(--sp-6);
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:transform var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease);
  position:relative;overflow:hidden;
}
.point-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,0.22),transparent);
}
.point-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover),var(--glow-soft);
}
.point-card h3{font-size:18px;margin-bottom:10px;}
.point-card p{font-size:14px;margin-bottom:0;color:var(--t-2);}
.point-card__icon{
  width:38px;height:38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,212,240,0.12);
  border:1px solid rgba(47,212,240,0.22);
  color:var(--c-primary);
  margin-bottom:var(--sp-4);
}

/* ============ 其它分类胶囊 ============ */
.chip-row{display:flex;flex-wrap:wrap;gap:var(--sp-3);}
.chip{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 20px;border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--t-2);font-size:14px;
  transition:transform var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
.chip:hover{
  transform:translateY(-2px);
  color:var(--t-1);
  border-color:rgba(47,212,240,0.4);
  box-shadow:var(--glow-soft);
  text-decoration:none;
}
.chip.is-current{
  color:var(--c-primary);
  border-color:rgba(47,212,240,0.5);
  background:rgba(47,212,240,0.10);
}
.chip .chip-dot{width:6px;height:6px;border-radius:50%;background:var(--c-primary);flex:0 0 6px;}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;
  border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  background:
    linear-gradient(120deg,rgba(47,212,240,0.10) 0%,rgba(124,108,255,0.10) 100%),
    rgba(10,15,26,0.86);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  padding:var(--sp-12);
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-8);
  flex-wrap:wrap;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg, rgba(255,255,255,0.03) 0 1px, transparent 1px 10px);
  opacity:0.6;pointer-events:none;
}
.cta-band__text{position:relative;z-index:1;max-width:34em;}
.cta-band h2{font-size:26px;margin-bottom:10px;}
.cta-band p{margin-bottom:0;font-size:15px;color:var(--t-2);}
.cta-band__actions{position:relative;z-index:1;display:flex;gap:var(--sp-3);flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:0;
  padding:80px 0 0;
  background:linear-gradient(180deg,rgba(10,15,26,0.9) 0%,#04060C 100%);
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,212,240,0.5),transparent);
}
.site-footer::after{
  content:"";position:absolute;width:620px;height:620px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,212,240,0.10),transparent 68%);
  bottom:-320px;left:-160px;pointer-events:none;
}
.footer__grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;
  gap:var(--sp-12);
  padding-bottom:var(--sp-12);
}
.footer__col h3{font-size:15px;letter-spacing:0.02em;margin-bottom:var(--sp-4);color:var(--t-1);}
.footer__brand-desc{font-size:14px;color:var(--t-3);margin:var(--sp-4) 0;max-width:26em;}
.footer__social{display:flex;gap:var(--sp-3);flex-wrap:wrap;}
.footer__social a{
  font-size:13px;color:var(--t-2);
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--line);background:var(--glass);
  transition:border-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease);
}
.footer__social a:hover{color:var(--c-primary);border-color:rgba(47,212,240,0.4);text-decoration:none;}
.footer__links{display:flex;flex-direction:column;gap:10px;}
.footer__links a{font-size:14px;color:var(--t-2);}
.footer__links a:hover{color:var(--c-primary);}
.footer__form{display:flex;flex-direction:column;gap:var(--sp-3);}
.footer__form input{
  width:100%;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  padding:12px 16px;
  color:var(--t-1);font-size:14px;
  transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
.footer__form input::placeholder{color:var(--t-3);}
.footer__form input:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(47,212,240,0.16);
}
.hint{font-size:12px;color:var(--t-3);line-height:1.6;}
.footer__bottom{
  position:relative;z-index:1;
  border-top:1px solid var(--line);
  padding:22px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);flex-wrap:wrap;
  font-size:13px;color:var(--t-3);
}
.footer__bottom a{color:var(--t-3);}
.footer__bottom a:hover{color:var(--c-primary);}

/* ============ 浮动 CTA / 移动菜单 ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:90;
  display:flex;align-items:center;gap:10px;
  padding:8px 10px 8px 22px;
  border-radius:999px;
  background:rgba(10,15,26,0.9);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity var(--t-mid) var(--ease),transform var(--t-mid) var(--ease);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta__label{font-size:14px;color:var(--t-1);font-weight:600;white-space:nowrap;}
.float-cta__icon{
  width:40px;height:40px;border-radius:999px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,212,240,0.12);
  border:1px solid rgba(47,212,240,0.28);
  color:var(--c-primary);
  transition:background var(--t-fast) var(--ease),transform var(--t-fast) var(--ease);
}
.float-cta__icon:hover{background:rgba(47,212,240,0.2);transform:translateY(-2px);}

.mobile-panel{
  position:fixed;inset:0;z-index:95;
  background:rgba(5,7,13,0.94);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  display:flex;flex-direction:column;
  padding:22px 20px calc(22px + env(safe-area-inset-bottom,0px));
  transform:translateX(100%);
  transition:transform var(--t-mid) var(--ease);
  visibility:hidden;
}
.mobile-panel.is-open{transform:translateX(0);visibility:visible;}
.mobile-panel__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-6);}
.mobile-panel__close{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:var(--glass);color:var(--t-1);cursor:pointer;font-size:18px;line-height:1;
}
.mobile-panel__nav{display:flex;flex-direction:column;}
.mobile-panel__nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 4px;
  font-size:17px;color:var(--t-1);
  border-bottom:1px solid var(--line);
}
.mobile-panel__nav a:hover{color:var(--c-primary);text-decoration:none;}
.mobile-panel__nav a .chev{color:var(--t-3);}
.mobile-panel__foot{margin-top:auto;padding-top:var(--sp-6);}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .spot{width:900px;height:900px;}
}
@media (max-width:1199px){
  .point-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  .nav__menu{display:none;}
  .nav__burger{display:inline-flex;}
  .nav__cta{display:none;}
  .page-hero__inner{grid-template-columns:1fr;gap:var(--sp-8);}
  .hero-figure{max-width:560px;}
  .page-hero{padding:56px 0 48px;}
  .section{padding-top:72px;padding-bottom:72px;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:var(--sp-8);}
}
@media (max-width:767px){
  :root{
    --fs-h1:28px;
    --fs-h2:23px;
    --fs-h3:18px;
    --fs-body:16px;
  }
  .container{padding-left:16px;padding-right:16px;}
  .section{padding-top:56px;padding-bottom:56px;}
  .topbar__center{display:none;}
  .nav__inner{min-height:56px;}
  .logo__sub{display:none;}
  .page-hero{padding:40px 0 36px;}
  .page-hero__stats{gap:var(--sp-6);}
  .compare-table{min-width:640px;}
  .compare-table th,.compare-table td{padding:14px 16px;font-size:14px;}
  .acc-body__inner{padding-left:22px;}
  .point-grid{grid-template-columns:1fr;}
  .cta-band{padding:var(--sp-8);}
  .footer__grid{grid-template-columns:1fr;}
  .footer__col--form{order:9;}
  .float-cta{
    left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px));
    padding:8px 8px 8px 18px;justify-content:space-between;
    border-radius:999px;
  }
  body{padding-bottom:84px;}
  .compare-note{gap:var(--sp-3);}
}
@media (max-width:479px){
  :root{--fs-h1:25px;--fs-h2:21px;}
  .cta-band{padding:var(--sp-6);}
  .acc-head{padding:16px;}
  .acc-index{flex:0 0 22px;}
  .footer__bottom{flex-direction:column;align-items:flex-start;}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
}