/* ============================================================
   云舟支付 · 首页模板 yz v2
   风格：Liquid Glass（液态玻璃）/ 3D / 品牌级
   要点：真实品牌 logo 玻璃瓦片、指针跟随高光、卡片 3D tilt、
        背景流光、克制动效（无卡通、无浮夸）
   ============================================================ */

:root{
  --ink:#08101f;
  --ink-2:#3a475c;
  --ink-3:#6d7b90;
  --line:rgba(15,35,80,.09);
  --line-2:rgba(15,35,80,.06);
  --bg:#f6f8fc;
  --blue:#2563eb;
  --blue-deep:#1a4fd6;
  --blue-soft:rgba(37,99,235,.08);

  --glass-hi:rgba(255,255,255,.72);
  --glass-lo:rgba(255,255,255,.34);
  --glass-stroke:rgba(255,255,255,.85);
  --glass-shadow:0 1px 0 rgba(255,255,255,.9) inset,
                 0 -1px 0 rgba(255,255,255,.34) inset,
                 0 24px 60px -28px rgba(12,30,70,.34),
                 0 8px 22px -14px rgba(12,30,70,.20);

  --radius:22px;
  --radius-sm:14px;
  --wrap:1140px;
  --nav-h:68px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --mono:"SF Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);font-family:var(--font);
  font-size:15px;line-height:1.7;background:var(--bg);
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,h5,p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
svg{display:block}

/* ============================================================
   背景：流光 + 网格 + 噪点（玻璃要有可折射的东西才像玻璃）
   ============================================================ */
.bg-fx{
  position:fixed;inset:0;z-index:-2;pointer-events:none;overflow:hidden;
  background:
    radial-gradient(1100px 620px at 12% -8%, rgba(37,99,235,.14), transparent 62%),
    radial-gradient(900px 520px at 92% 4%, rgba(14,165,233,.12), transparent 60%),
    radial-gradient(760px 520px at 50% 108%, rgba(99,102,241,.10), transparent 62%),
    linear-gradient(180deg,#f8fafd 0%,#f4f7fc 42%,#eef3fa 100%);
}
.bg-fx::before{
  content:"";position:absolute;inset:-30% -10%;
  background:
    radial-gradient(420px 300px at 22% 26%, rgba(56,132,255,.20), transparent 62%),
    radial-gradient(380px 260px at 78% 18%, rgba(0,198,255,.16), transparent 64%),
    radial-gradient(460px 320px at 62% 74%, rgba(120,119,255,.16), transparent 62%);
  filter:blur(28px);
  animation:drift 26s var(--ease) infinite alternate;
}
.bg-fx::after{
  content:"";position:absolute;inset:0;opacity:.30;
  background-image:
    linear-gradient(rgba(15,35,80,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15,35,80,.045) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%, #000 20%, transparent 78%);
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%, #000 20%, transparent 78%);
}
@keyframes drift{
  0%{transform:translate3d(-1.5%,-1%,0) scale(1)}
  50%{transform:translate3d(1.5%,1.5%,0) scale(1.05)}
  100%{transform:translate3d(-.5%,.5%,0) scale(1.02)}
}
/* 指针跟随光斑 */
.spot{
  position:fixed;width:640px;height:640px;left:0;top:0;z-index:-1;pointer-events:none;
  margin:-320px 0 0 -320px;border-radius:50%;
  background:radial-gradient(circle, rgba(37,99,235,.13), rgba(37,99,235,0) 62%);
  transition:transform .32s var(--ease-out);
  will-change:transform;
}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 26px}

/* ============================================================
   液态玻璃基础件
   ============================================================ */
.glass{
  position:relative;isolation:isolate;
  background:linear-gradient(148deg,var(--glass-hi),var(--glass-lo));
  -webkit-backdrop-filter:blur(26px) saturate(190%);
  backdrop-filter:blur(26px) saturate(190%);
  border-radius:var(--radius);
  box-shadow:var(--glass-shadow);
}
.glass::before{ /* 顶部高光 */
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(125% 90% at 18% -10%, rgba(255,255,255,.92), rgba(255,255,255,0) 58%);
  opacity:.9;z-index:-1;
}
.glass::after{ /* 边缘折射描边 */
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;padding:1px;
  background:linear-gradient(155deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.16) 34%, rgba(255,255,255,.06) 62%, rgba(255,255,255,.82) 100%);
  -webkit-mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite:exclude;
}
/* 玻璃上的指针跟随高光 */
.glass .sheen{
  position:absolute;inset:0;border-radius:inherit;pointer-events:none;z-index:1;
  background:radial-gradient(300px 200px at var(--mx,50%) var(--my,0%), rgba(255,255,255,.5), rgba(255,255,255,0) 62%);
  opacity:0;transition:opacity .3s var(--ease);
}
.glass:hover .sheen{opacity:1}

/* ============================================================
   导航
   ============================================================ */
.nav{
  position:sticky;top:0;z-index:70;
  background:linear-gradient(180deg, rgba(255,255,255,.62), rgba(255,255,255,.34));
  -webkit-backdrop-filter:blur(24px) saturate(180%);
  backdrop-filter:blur(24px) saturate(180%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:0 1px 0 rgba(15,35,80,.05), 0 12px 30px -24px rgba(12,30,70,.4);
}
.nav-in{display:flex;align-items:center;height:var(--nav-h);gap:8px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:26px;height:26px;border-radius:9px;position:relative;flex:0 0 auto;
  background:linear-gradient(145deg,#3b82f6 8%,#2563eb 52%,#1e40af 100%);
  box-shadow:
    0 1px 0 rgba(255,255,255,.7) inset,
    0 -2px 6px rgba(0,0,0,.16) inset,
    0 6px 16px -6px rgba(37,99,235,.65);
  transition:transform .5s var(--ease-out);
}
.brand-mark::after{
  content:"";position:absolute;inset:6px;border-radius:3px;
  border:1.7px solid rgba(255,255,255,.94);border-bottom-color:rgba(255,255,255,.28);
}
.brand:hover .brand-mark{transform:rotate(-8deg) scale(1.06)}
.brand-name{font-size:16.5px;font-weight:680;letter-spacing:.01em}
.nav-links{display:flex;align-items:center;gap:30px;margin-left:46px;flex:1}
.nav-links a{font-size:14px;color:var(--ink-2);position:relative;padding:6px 0;transition:color .2s var(--ease)}
.nav-links a:hover,.nav-links a.on{color:var(--ink)}
.nav-links a.on::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1.6px;border-radius:2px;
  background:linear-gradient(90deg,transparent,var(--blue),transparent);
}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none}

/* 按钮：液态玻璃 + 3D 按压 */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 19px;border-radius:12px;
  font-size:14px;font-weight:560;white-space:nowrap;overflow:hidden;
  transition:transform .22s var(--ease-out),box-shadow .26s var(--ease),background .22s,border-color .22s;
  transform:translateZ(0);
}
.btn:active{transform:translateY(1.5px) scale(.988)}
.btn-ghost{
  color:var(--ink-2);
  background:linear-gradient(160deg,rgba(255,255,255,.78),rgba(255,255,255,.42));
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:0 1px 0 rgba(255,255,255,.95) inset, 0 6px 16px -12px rgba(12,30,70,.5);
}
.btn-ghost:hover{color:var(--ink);box-shadow:0 1px 0 rgba(255,255,255,.95) inset, 0 10px 24px -14px rgba(12,30,70,.55)}
.btn-solid{
  color:#fff;border:1px solid rgba(255,255,255,.24);
  background:linear-gradient(160deg,#3b82f6,#2563eb 55%,#1d4ed8);
  box-shadow:
    0 1px 0 rgba(255,255,255,.45) inset,
    0 -2px 8px rgba(6,20,60,.28) inset,
    0 10px 26px -12px rgba(37,99,235,.72);
}
.btn-solid::after{ /* 扫光 */
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,transparent 28%,rgba(255,255,255,.42) 46%,transparent 62%);
  transform:translateX(-120%);transition:transform .7s var(--ease);
}
.btn-solid:hover::after{transform:translateX(120%)}
.btn-solid:hover{box-shadow:0 1px 0 rgba(255,255,255,.5) inset,0 -2px 8px rgba(6,20,60,.3) inset,0 16px 34px -14px rgba(37,99,235,.8)}
.btn-lg{height:48px;padding:0 27px;font-size:15px;border-radius:14px}

.nav-mobile{display:none}

/* ============================================================
   Hero
   ============================================================ */
.hero{position:relative;padding:86px 0 76px}
.hero-in{display:grid;grid-template-columns:1fr 430px;gap:60px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;padding:6px 13px 6px 11px;border-radius:100px;
  font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;font-weight:600;color:var(--blue);
  background:linear-gradient(150deg,rgba(255,255,255,.85),rgba(255,255,255,.45));
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:0 1px 0 rgba(255,255,255,.9) inset, 0 8px 20px -14px rgba(12,30,70,.5);
}
.eyebrow::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--blue);
  box-shadow:0 0 0 3px rgba(37,99,235,.16);
}
.hero h1{
  font-size:clamp(32px,4.7vw,52px);line-height:1.14;letter-spacing:-.03em;font-weight:700;
  margin-top:22px;
}
.hero h1 em{
  font-style:normal;position:relative;
  background:linear-gradient(100deg,#1d4ed8,#3b82f6 42%,#22d3ee);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{font-size:16px;max-width:530px;margin-top:22px;color:var(--ink-2)}
.hero-cta{display:flex;gap:12px;margin-top:36px;flex-wrap:wrap}

/* Hero 右侧：3D 玻璃卡 */
.hero-card{
  padding:0;overflow:hidden;
  transform:perspective(1100px) rotateX(6deg) rotateY(-9deg) translateZ(0);
  transition:transform .7s var(--ease-out),box-shadow .7s var(--ease-out);
  animation:floaty 9s ease-in-out infinite;
}
.hero-card:hover{transform:perspective(1100px) rotateX(0deg) rotateY(0deg)}
@keyframes floaty{
  0%,100%{transform:perspective(1100px) rotateX(6deg) rotateY(-9deg) translateY(0)}
  50%{transform:perspective(1100px) rotateX(4deg) rotateY(-7deg) translateY(-9px)}
}
.code-head{
  display:flex;align-items:center;gap:7px;padding:14px 17px;
  border-bottom:1px solid rgba(255,255,255,.65);
  background:linear-gradient(180deg,rgba(255,255,255,.5),rgba(255,255,255,.12));
}
.dot{width:9px;height:9px;border-radius:50%;box-shadow:0 1px 0 rgba(255,255,255,.7) inset}
.dot:nth-child(1){background:#ff8e8a}
.dot:nth-child(2){background:#ffcf70}
.dot:nth-child(3){background:#7bdfa3}
.code-title{margin-left:9px;font-size:12px;color:var(--ink-3);font-family:var(--mono)}
.code-body{
  margin:0;padding:19px 18px 23px;font-family:var(--mono);font-size:12.3px;line-height:1.98;
  color:var(--ink-2);overflow-x:auto;white-space:pre;
}
.code-body .k{color:#7c3aed}
.code-body .s{color:#0e7490}
.code-body .c{color:#94a3b8}

/* ============================================================
   指标
   ============================================================ */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);
  margin-top:62px;padding:8px;border-radius:18px;
}
.metric{padding:24px 22px;position:relative}
.metric + .metric::before{
  content:"";position:absolute;left:0;top:22%;bottom:22%;width:1px;
  background:linear-gradient(180deg,transparent,rgba(15,35,80,.12),transparent);
}
.metric-num{
  font-size:clamp(27px,3.4vw,39px);font-weight:700;letter-spacing:-.032em;line-height:1;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(170deg,#0b1220,#27364d);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.metric-num small{font-size:.46em;font-weight:600;letter-spacing:0;color:var(--ink-3);-webkit-text-fill-color:var(--ink-3);margin-left:3px}
.metric-label{font-size:12.8px;color:var(--ink-3);margin-top:11px}

/* ============================================================
   区块通用
   ============================================================ */
.sec{padding:92px 0}
.sec-tight{padding:70px 0}
.sec-head{margin-bottom:48px;max-width:660px}
.h2{font-size:clamp(23px,3.1vw,32px);font-weight:690;letter-spacing:-.022em;line-height:1.32;margin-top:16px}
.lead{color:var(--ink-2);font-size:15.4px;margin-top:14px;max-width:640px}

/* ============================================================
   品牌通道瓦片（真实 logo · 液态玻璃 · 3D）
   ============================================================ */
.channels{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.ch{
  position:relative;isolation:isolate;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  padding:22px 10px 18px;border-radius:18px;
  background:linear-gradient(150deg,rgba(255,255,255,.82),rgba(255,255,255,.38));
  -webkit-backdrop-filter:blur(18px) saturate(180%);
  backdrop-filter:blur(18px) saturate(180%);
  border:1px solid rgba(255,255,255,.92);
  box-shadow:
    0 1px 0 rgba(255,255,255,.95) inset,
    0 -1px 0 rgba(255,255,255,.4) inset,
    0 16px 34px -24px rgba(12,30,70,.55);
  transform-style:preserve-3d;
  transition:transform .45s var(--ease-out),box-shadow .45s var(--ease-out);
}
.ch:hover{
  transform:translateY(-6px) rotateX(7deg) scale(1.03);
  box-shadow:
    0 1px 0 rgba(255,255,255,.98) inset,
    0 -1px 0 rgba(255,255,255,.5) inset,
    0 30px 50px -26px rgba(12,30,70,.6);
}
.ch-logo{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;flex:0 0 auto;
  box-shadow:0 1px 0 rgba(255,255,255,.6) inset, 0 8px 18px -10px rgba(12,30,70,.6);
  transform:translateZ(22px);
  transition:transform .45s var(--ease-out);
}
.ch:hover .ch-logo{transform:translateZ(34px) scale(1.04)}
.ch-logo svg{width:26px;height:26px}
.ch b{font-size:13.4px;font-weight:620;transform:translateZ(14px)}
.ch span{font-size:11px;color:var(--ink-3);transform:translateZ(10px)}

/* ============================================================
   能力卡（液态玻璃 + 指针高光 + 3D tilt）
   ============================================================ */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{
  position:relative;isolation:isolate;padding:32px 28px 34px;border-radius:20px;
  background:linear-gradient(150deg,rgba(255,255,255,.8),rgba(255,255,255,.4));
  -webkit-backdrop-filter:blur(22px) saturate(180%);
  backdrop-filter:blur(22px) saturate(180%);
  border:1px solid rgba(255,255,255,.92);
  box-shadow:
    0 1px 0 rgba(255,255,255,.95) inset,
    0 -1px 0 rgba(255,255,255,.36) inset,
    0 20px 44px -30px rgba(12,30,70,.6);
  transform-style:preserve-3d;
  transition:transform .5s var(--ease-out),box-shadow .5s var(--ease-out);
}
.card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;z-index:0;
  background:radial-gradient(360px 240px at var(--mx,50%) var(--my,0%), rgba(255,255,255,.62), rgba(255,255,255,0) 64%);
  opacity:0;transition:opacity .35s var(--ease);
}
.card:hover::before{opacity:1}
.card:hover{box-shadow:0 1px 0 rgba(255,255,255,.98) inset, 0 36px 60px -34px rgba(12,30,70,.66)}
.card > *{position:relative;z-index:1}
.card-ico{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;margin-bottom:20px;
  font-size:15px;font-weight:700;color:var(--blue);
  background:linear-gradient(150deg,rgba(255,255,255,.95),rgba(219,234,254,.8));
  border:1px solid rgba(255,255,255,.95);
  box-shadow:0 1px 0 rgba(255,255,255,.95) inset, 0 10px 22px -14px rgba(37,99,235,.7);
  transform:translateZ(26px);
}
.card h3{font-size:16.5px;font-weight:660;letter-spacing:-.012em;transform:translateZ(16px)}
.card p{font-size:13.8px;color:var(--ink-2);margin-top:10px;line-height:1.74;transform:translateZ(10px)}
.card ul{margin-top:16px;display:grid;gap:8px}
.card li{font-size:13px;color:var(--ink-3);padding-left:16px;position:relative;transform:translateZ(6px)}
.card li::before{
  content:"";position:absolute;left:0;top:.68em;width:5px;height:5px;border-radius:50%;
  background:linear-gradient(150deg,#60a5fa,#2563eb);box-shadow:0 0 0 3px rgba(37,99,235,.1);
}

/* ============================================================
   步骤
   ============================================================ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step{
  position:relative;padding:26px 22px 26px;border-radius:18px;
  background:linear-gradient(150deg,rgba(255,255,255,.72),rgba(255,255,255,.3));
  -webkit-backdrop-filter:blur(16px) saturate(170%);
  backdrop-filter:blur(16px) saturate(170%);
  border:1px solid rgba(255,255,255,.88);
  box-shadow:0 1px 0 rgba(255,255,255,.92) inset, 0 14px 30px -26px rgba(12,30,70,.6);
  transition:transform .4s var(--ease-out),box-shadow .4s var(--ease-out);
}
.step:hover{transform:translateY(-4px);box-shadow:0 1px 0 rgba(255,255,255,.95) inset,0 26px 44px -30px rgba(12,30,70,.62)}
.step-n{font-family:var(--mono);font-size:11.5px;font-weight:600;letter-spacing:.1em;color:var(--blue)}
.step h4{font-size:15px;font-weight:640;margin-top:13px}
.step p{font-size:13.1px;color:var(--ink-3);margin-top:8px;line-height:1.72}

/* ============================================================
   对接信息
   ============================================================ */
.spec{display:grid;grid-template-columns:1fr 1.05fr;gap:52px;align-items:center}
.spec-table{padding:8px;border-radius:20px}
.spec-row{display:grid;grid-template-columns:1fr auto auto;gap:14px;align-items:center;padding:15px 18px;border-radius:12px}
.spec-row + .spec-row{margin-top:2px}
.spec-row:nth-child(odd){background:rgba(255,255,255,.4)}
.spec-row.head{color:var(--ink-3);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase}
.spec-row b{font-size:13.8px;font-weight:620}
.spec-row .val{font-family:var(--mono);font-size:12.8px;color:var(--ink-2);font-variant-numeric:tabular-nums}
.spec-row .tag{
  font-size:11px;color:var(--blue);padding:3px 9px;border-radius:7px;
  background:rgba(37,99,235,.09);border:1px solid rgba(37,99,235,.14);
}

/* ============================================================
   收尾 CTA（深色玻璃）
   ============================================================ */
.final{
  position:relative;overflow:hidden;border-radius:26px;padding:66px 58px;color:#fff;
  background:
    radial-gradient(900px 420px at 82% -10%, rgba(96,165,250,.38), transparent 62%),
    radial-gradient(700px 380px at 8% 110%, rgba(34,211,238,.22), transparent 62%),
    linear-gradient(140deg,#070d1a 0%,#0e1c33 48%,#16294a 100%);
  box-shadow:
    0 1px 0 rgba(255,255,255,.16) inset,
    0 -1px 0 rgba(255,255,255,.06) inset,
    0 40px 80px -40px rgba(6,16,40,.85);
}
.final::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(600px 300px at var(--mx,70%) var(--my,0%), rgba(255,255,255,.10), transparent 60%);
}
.final h2{font-size:clamp(23px,3.1vw,31px);font-weight:680;letter-spacing:-.022em;position:relative;z-index:1}
.final p{color:rgba(255,255,255,.66);margin-top:13px;font-size:14.5px;position:relative;z-index:1;max-width:520px}
.final-cta{display:flex;gap:12px;margin-top:32px;position:relative;z-index:1;flex-wrap:wrap}
.final .btn-solid{background:linear-gradient(160deg,#ffffff,#e8f0ff);color:#0a1628;border-color:rgba(255,255,255,.6)}
.final .btn-solid:hover{background:linear-gradient(160deg,#ffffff,#dbe8ff)}
.final .btn-ghost{
  color:rgba(255,255,255,.92);
  background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.22);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.final .btn-ghost:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.34);color:#fff}

/* ============================================================
   页脚
   ============================================================ */
.foot{padding:56px 0 44px;margin-top:20px;border-top:1px solid rgba(15,35,80,.07)}
.foot-in{display:flex;justify-content:space-between;gap:48px;flex-wrap:wrap}
.foot-brand{max-width:310px}
.foot-brand .brand-name{font-size:15px}
.foot-brand p{font-size:13px;color:var(--ink-3);margin-top:14px;line-height:1.78}
.foot-cols{display:flex;gap:60px;flex-wrap:wrap}
.foot-col h5{font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);font-weight:600;margin:0 0 14px}
.foot-col a,.foot-col span{display:block;font-size:13.4px;color:var(--ink-2);padding:5px 0;transition:color .18s}
.foot-col a:hover{color:var(--blue)}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(15,35,80,.06);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.4px;color:var(--ink-3);
}

/* ============================================================
   滚动入场（默认可见，避免无 JS/爬虫/截图白屏）
   ============================================================ */
.rise{opacity:1;transform:none}
html.js-anim .rise{
  opacity:0;transform:translateY(18px);
  transition:opacity .72s var(--ease-out),transform .72s var(--ease-out);
}
html.js-anim .rise.in{opacity:1;transform:none}

/* ============================================================
   内容页
   ============================================================ */
.page{padding:64px 0 96px}
.page-head{max-width:730px;margin-bottom:48px}
.page-head h1{font-size:clamp(27px,3.7vw,40px);font-weight:700;letter-spacing:-.028em;line-height:1.22;margin-top:18px}
.page-head .lead{font-size:15.5px;margin-top:16px}
.prose{max-width:780px}
.prose h2{font-size:19px;font-weight:660;letter-spacing:-.014em;margin:46px 0 0;padding-top:22px;border-top:1px solid rgba(15,35,80,.08)}
.prose h2:first-child{margin-top:0;padding-top:0;border-top:0}
.prose h3{font-size:15.5px;font-weight:630;margin:26px 0 0}
.prose p{color:var(--ink-2);font-size:14.4px;margin-top:12px;line-height:1.84}
.prose ul{margin-top:12px;display:grid;gap:8px}
.prose li{font-size:14px;color:var(--ink-2);padding-left:18px;position:relative;line-height:1.8}
.prose li::before{content:"";position:absolute;left:0;top:.74em;width:5px;height:5px;border-radius:50%;background:linear-gradient(150deg,#60a5fa,#2563eb)}
.prose code{font-family:var(--mono);font-size:12.6px;color:#0e7490;background:rgba(14,116,144,.07);padding:1px 6px;border-radius:5px}
.prose .note{
  margin-top:24px;padding:17px 19px;border-radius:14px;font-size:13.4px;color:var(--ink-2);
  background:linear-gradient(150deg,rgba(255,255,255,.8),rgba(255,255,255,.42));
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:0 1px 0 rgba(255,255,255,.9) inset, 0 12px 26px -22px rgba(12,30,70,.6);
}
.matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:26px}
.matrix-item{
  padding:24px 26px;border-radius:16px;
  background:linear-gradient(150deg,rgba(255,255,255,.78),rgba(255,255,255,.36));
  -webkit-backdrop-filter:blur(18px) saturate(175%);backdrop-filter:blur(18px) saturate(175%);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:0 1px 0 rgba(255,255,255,.9) inset, 0 16px 32px -28px rgba(12,30,70,.6);
  transition:transform .4s var(--ease-out),box-shadow .4s var(--ease-out);
}
.matrix-item:hover{transform:translateY(-3px);box-shadow:0 1px 0 rgba(255,255,255,.95) inset,0 24px 40px -30px rgba(12,30,70,.62)}
.matrix-item h4{font-size:14.6px;font-weight:640;margin:0}
.matrix-item p{font-size:13.2px;color:var(--ink-3);margin-top:8px;line-height:1.76}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1024px){
  .hero-in{grid-template-columns:1fr;gap:44px}
  .hero-card{transform:none;animation:none;max-width:520px}
  .channels{grid-template-columns:repeat(3,1fr)}
  .cards{grid-template-columns:1fr;gap:14px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .spec{grid-template-columns:1fr;gap:30px}
}
@media (max-width:768px){
  :root{--nav-h:60px;--radius:18px}
  .wrap{padding:0 18px}
  .nav-links,.nav-actions{display:none}
  .nav-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;margin-left:auto;border-radius:11px}
  .nav-toggle span{display:block;height:1.7px;background:var(--ink);border-radius:2px;transition:transform .26s var(--ease),opacity .2s}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(3.4px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){transform:translateY(-3.4px) rotate(-45deg)}
  .nav-mobile{
    display:none;padding:6px 18px 20px;border-top:1px solid rgba(255,255,255,.7);
    background:rgba(255,255,255,.94);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  }
  .nav-mobile.show{display:block}
  .nav-mobile > a{display:block;padding:13px 0;font-size:15px;color:var(--ink-2);border-bottom:1px solid rgba(15,35,80,.06)}
  .nav-mobile-actions{display:flex;gap:10px;margin-top:16px}
  .nav-mobile-actions .btn{flex:1}

  .hero{padding:52px 0 48px}
  .hero h1{margin-top:18px}
  .hero-cta{gap:10px;margin-top:28px}
  .hero-cta .btn{flex:1}
  .sec{padding:58px 0}
  .sec-tight{padding:46px 0}
  .sec-head{margin-bottom:30px}

  .metrics{grid-template-columns:repeat(2,1fr);margin-top:38px;padding:4px}
  .metric{padding:20px 16px}
  .metric:nth-child(3){position:relative}
  .metric:nth-child(3)::before,.metric:nth-child(4)::before{
    top:0;bottom:auto;left:16%;right:16%;width:auto;height:1px;
    background:linear-gradient(90deg,transparent,rgba(15,35,80,.12),transparent);
  }
  .metric-num small{font-size:.44em}

  .channels{grid-template-columns:repeat(3,1fr);gap:10px}
  .ch{padding:16px 6px 14px;gap:9px;border-radius:15px}
  .ch-logo{width:38px;height:38px;border-radius:11px}
  .ch-logo svg{width:22px;height:22px}
  .ch b{font-size:12px}
  .ch span:not(.ch-logo){display:none}

  .steps{grid-template-columns:1fr;gap:12px}
  .spec-row{padding:13px 14px;grid-template-columns:1fr auto}
  .spec-row .tag{display:none}
  .final{padding:40px 24px;border-radius:20px}
  .final-cta{flex-direction:column}
  .final-cta .btn{width:100%}
  .foot{padding:40px 0 36px}
  .foot-cols{gap:36px}
  .page{padding:40px 0 64px}
  .matrix{grid-template-columns:1fr;gap:12px}
  .code-body{font-size:11.4px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  html.js-anim .rise{opacity:1;transform:none}
  .hero-card{animation:none}
  .bg-fx::before{animation:none}
}

/* 协议正文补充 */
.prose strong{color:var(--ink);font-weight:620}
.prose h4{font-size:15px;font-weight:640;margin:24px 0 0}