/* =========================================================
   Bitget UEX — 介绍页样式
   深色底 + 品牌青色 (#62EEF8)，无构建步骤
   ========================================================= */

:root{
  color-scheme: dark;
  --bg:#05070a;
  --bg-soft:#080c11;
  --panel:rgba(255,255,255,.035);
  --panel-2:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(255,255,255,.055);
  --text:#eef4f7;
  --muted:#93a2ae;
  --muted-2:#71808c;
  --cyan:#62EEF8;
  --cyan-deep:#2CC3D4;
  --green:#4fe0a8;
  --red:#ff7b8a;
  --radius:16px;
  --max:1160px;
  /* 兼容旧变量 */
  --panel-solid:#0c1117;
  --yellow:#62EEF8;
  --yellow2:#46DDE8;
  --panel2:#191d23;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Inter","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
  font-size:16px;
  line-height:1.65;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(900px 520px at 82% -10%, rgba(98,238,248,.16), transparent 62%),
    radial-gradient(760px 480px at 4% 4%, rgba(44,195,212,.09), transparent 60%),
    radial-gradient(700px 500px at 50% 108%, rgba(98,238,248,.06), transparent 65%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.55;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:radial-gradient(1200px 720px at 50% -5%, #000 0%, transparent 72%);
  mask-image:radial-gradient(1200px 720px at 50% -5%, #000 0%, transparent 72%);
}
main,header.site-header,footer{position:relative;z-index:1}

a{color:inherit;text-decoration:none}
.nowrap{white-space:nowrap}
img{max-width:100%}
svg{display:block}
::selection{background:rgba(98,238,248,.28);color:#fff}

.svg-sprite{position:absolute;width:0;height:0;overflow:hidden}
.ico{
  width:18px;height:18px;flex:none;
  fill:none;stroke:currentColor;stroke-width:1.8;
  stroke-linecap:round;stroke-linejoin:round;
}

.section-wrap{width:min(var(--max),calc(100% - 48px));margin-inline:auto}
.section{padding-block:clamp(56px,6.8vw,96px)}

/* ---------------- 顶部导航 ---------------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,7,10,.68);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.nav{
  width:min(1240px,calc(100% - 48px));
  margin-inline:auto;
  height:76px;
  display:flex;align-items:center;gap:22px;
}
.brand{display:inline-flex;align-items:center;flex:none}
.brand-logo{display:block;width:112px;height:auto}
.nav-links{
  display:flex;align-items:center;gap:2px;
  margin-inline:auto;
}
.nav-links a{
  font-size:14px;font-weight:600;color:#b7c4ce;
  padding:9px 15px;border-radius:999px;
  transition:color .2s, background .2s;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.055)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:11px;
  align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
  color:#dbe8ee;cursor:pointer;padding:0;
  transition:background .2s,border-color .2s;
}
.nav-toggle:hover{background:rgba(255,255,255,.09)}
.nav-toggle .ico{width:20px;height:20px;stroke-width:2}
.nav-toggle[aria-expanded="true"]{background:rgba(98,238,248,.12);border-color:rgba(98,238,248,.4);color:var(--cyan)}

.mobile-nav{
  display:none;
  padding:8px 24px 20px;
  border-top:1px solid rgba(255,255,255,.06);
  background:rgba(6,9,13,.96);
}
.mobile-nav a{
  display:block;padding:13px 4px;font-size:15px;font-weight:600;
  color:#c3d0d9;border-bottom:1px solid rgba(255,255,255,.05);
}
.mobile-nav a:last-child{border-bottom:0}

/* ---------------- 按钮 ---------------- */
.btn{
  position:relative;
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:52px;padding:0 24px;
  border-radius:13px;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  white-space:nowrap;
  transition:transform .2s ease, box-shadow .25s ease, background .2s ease, border-color .2s ease;
}
.btn .ico{width:17px;height:17px}
.btn-primary{
  color:#032024;
  background:linear-gradient(180deg,#8FF7FF 0%,#54E3F0 46%,#2CC3D4 100%);
  box-shadow:0 14px 34px -12px rgba(98,238,248,.65), inset 0 1px 0 rgba(255,255,255,.65);
}
.btn-primary .ico{stroke-width:2.3}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 20px 44px -12px rgba(98,238,248,.8), inset 0 1px 0 rgba(255,255,255,.75);
}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  color:#e8f4f8;
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.14);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}
.btn-ghost:hover{
  transform:translateY(-2px);
  background:rgba(98,238,248,.08);
  border-color:rgba(98,238,248,.45);
}
.btn-sm{min-height:41px;padding:0 17px;font-size:13.5px;border-radius:11px}
.btn:focus-visible,.nav-links a:focus-visible,.nav-toggle:focus-visible,.text-link:focus-visible,.footer a:focus-visible{
  outline:2px solid rgba(98,238,248,.75);outline-offset:3px;
}

/* ---------------- Hero ---------------- */
.hero{
  display:grid;
  grid-template-columns:1.02fr .98fr;
  gap:clamp(20px,3vw,48px);
  align-items:center;
  padding-block:clamp(44px,6vw,86px) clamp(40px,5vw,64px);
}
.hero-copy{position:relative;z-index:2}
.badge{
  display:inline-flex;align-items:center;gap:9px;
  margin:0 0 22px;
  padding:7px 14px;
  border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;color:#bceef4;
  background:rgba(98,238,248,.08);
  border:1px solid rgba(98,238,248,.22);
}
.badge .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 4px rgba(98,238,248,.16);
}
.hero h1{
  margin:0 0 20px;
  font-size:clamp(38px,4.9vw,66px);
  line-height:1.1;
  font-weight:800;
  letter-spacing:-.045em;
}
.hero h1 .accent{
  background:linear-gradient(100deg,#9DF9FF 0%,#5BE6F2 45%,#2FB6C6 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.lead{
  max-width:530px;margin:0 0 30px;
  color:#9facb7;font-size:16px;line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-actions.centered{justify-content:center}
.microcopy{margin:14px 0 0;font-size:12px;color:#6d7c87}
.hero-points{
  display:flex;flex-wrap:wrap;gap:20px;
  list-style:none;padding:0;margin:28px 0 0;
  font-size:12.5px;color:#8b9aa6;
}
.hero-points li{display:inline-flex;align-items:center;gap:7px}
.hero-points .ico{width:15px;height:15px;color:var(--cyan)}

.hero-visual{
  position:relative;
  display:grid;place-items:center;
  min-height:620px;
}
.hero-visual::before{
  content:"";position:absolute;width:470px;height:470px;border-radius:50%;
  border:1px solid rgba(98,238,248,.13);
}
.hero-visual::after{
  content:"";position:absolute;width:620px;height:620px;border-radius:50%;
  border:1px dashed rgba(255,255,255,.07);
}
.glow{
  position:absolute;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle, rgba(98,238,248,.22), rgba(98,238,248,0) 66%);
  filter:blur(6px);
}

/* 手机 App 示意图 */
.phone{
  position:relative;z-index:2;
  width:min(292px,78vw);
  aspect-ratio:292/596;
  padding:9px;
  border-radius:46px;
  background:linear-gradient(155deg,#2a3641 0%,#0d1419 38%,#05080b 100%);
  box-shadow:
    0 50px 120px -30px rgba(0,0,0,.95),
    0 0 0 1px rgba(255,255,255,.14),
    inset 0 0 0 1px rgba(255,255,255,.06);
}
.phone::after{
  content:"";position:absolute;top:16px;left:50%;transform:translateX(-50%);
  width:84px;height:21px;border-radius:12px;background:#05080b;z-index:4;
}
.phone-screen{
  position:relative;height:100%;
  border-radius:38px;
  overflow:hidden;
  display:flex;flex-direction:column;
  background:radial-gradient(120% 60% at 50% 0%, #0f1c24, #070b10 58%);
}
.status{
  display:flex;justify-content:space-between;align-items:center;
  padding:17px 22px 3px;
  font-size:10.5px;font-weight:600;color:#c3d3dc;
}
.status-icons{display:flex;align-items:flex-end;gap:2.5px;height:9px}
.status-icons i{display:block;width:3px;border-radius:1px;background:#93a9b5}
.status-icons i:nth-child(1){height:4px}
.status-icons i:nth-child(2){height:6.5px}
.status-icons i:nth-child(3){height:9px}
.app-head{display:flex;justify-content:space-between;align-items:center;padding:8px 20px 0}
.app-brand{font-size:15px;font-weight:800;letter-spacing:-.02em;color:var(--cyan)}
.app-avatar{
  width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  font-size:10.5px;font-weight:800;color:#04222a;
  background:linear-gradient(140deg,#8FF7FF,#2f95a3);
}
.app-balance{
  margin:16px 15px 0;padding:15px 16px 17px;
  display:flex;flex-direction:column;gap:3px;
  border-radius:18px;
  background:linear-gradient(150deg, rgba(98,238,248,.20), rgba(98,238,248,.03) 68%);
  border:1px solid rgba(98,238,248,.22);
}
.app-balance small{font-size:10px;color:#8fb8c0}
.app-balance strong{
  font-size:25px;font-weight:800;letter-spacing:-.035em;color:#f3fbfd;
  font-variant-numeric:tabular-nums;
}
.pnl{font-size:10px;font-weight:700;color:var(--green)}
.app-actions{
  display:grid;grid-template-columns:repeat(4,1fr);gap:4px;
  padding:15px 12px 4px;text-align:center;
}
.round{
  width:38px;height:38px;margin:0 auto 6px;
  display:grid;place-items:center;
  border-radius:12px;color:#9fe9f1;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.07);
}
.round .ico{width:16px;height:16px}
.app-actions small{font-size:9px;color:#87969f}
.app-list{flex:1;padding:10px 16px 0;overflow:hidden}
.app-list-head{
  display:flex;justify-content:space-between;
  padding:4px 0 9px;font-size:11.5px;font-weight:700;color:#dfe9ee;
}
.app-list-head .muted{color:#6c7b86;font-weight:500}
.market-row{
  display:grid;grid-template-columns:28px minmax(0,1fr) 50px auto;
  align-items:center;gap:9px;
  padding:8.5px 0;
  border-top:1px solid rgba(255,255,255,.045);
}
.coin{
  width:27px;height:27px;border-radius:50%;
  display:grid;place-items:center;
  font-size:11.5px;font-weight:800;
}
.c-btc{background:#2a2016;color:#f0a94a}
.c-eth{background:#1b1f2c;color:#98a8f0}
.c-sol{background:#132320;color:#7ce0bd}
.c-xau{background:#262014;color:#e8cf8a}
.market-name{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.market-name b{font-size:11px;font-weight:700;color:#e7f1f4}
.market-name small{font-size:8.5px;color:#6c7b86}
.spark{width:50px;height:19px}
.spark polyline{fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.spark.up polyline{stroke:var(--green)}
.spark.down polyline{stroke:var(--red)}
.chg{font-size:10px;font-weight:700;font-variant-numeric:tabular-nums}
.chg.up{color:var(--green)}
.chg.down{color:var(--red)}
.app-tabbar{
  display:flex;justify-content:space-around;
  padding:9px 4px 15px;
  border-top:1px solid rgba(255,255,255,.06);
  font-size:9.5px;color:#62717c;
}
.app-tabbar .on{color:var(--cyan);font-weight:700}

.visual-note{
  position:absolute;right:0;bottom:-4px;
  margin:0;font-size:10.5px;color:#5d6b76;letter-spacing:.02em;
}

/* ---------------- 信任条 ---------------- */
.trust-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);
  border-radius:18px;
  overflow:hidden;
  background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.012));
}
.trust-strip>div{
  display:flex;align-items:center;gap:12px;
  padding:20px 22px;
  border-right:1px solid rgba(255,255,255,.06);
}
.trust-strip>div:last-child{border-right:0}
.trust-icon{
  width:37px;height:37px;border-radius:11px;flex:none;
  display:grid;place-items:center;
  color:var(--cyan);
  background:rgba(98,238,248,.09);
  border:1px solid rgba(98,238,248,.16);
}
.trust-icon .ico{width:18px;height:18px}
.trust-strip p{margin:0;display:flex;flex-direction:column;gap:2px}
.trust-strip b{font-size:13px;font-weight:700}
.trust-strip small{font-size:11px;color:#7f8f9b}

/* ---------------- 通用标题 ---------------- */
.eyebrow{
  margin:0 0 14px;
  font-size:10.5px;font-weight:800;letter-spacing:.2em;text-transform:uppercase;
  color:var(--cyan);
}
.section-head{max-width:640px;margin-bottom:clamp(30px,4vw,46px)}
.section-head h2,.about-copy h2,.security-copy h2{
  margin:0 0 12px;
  font-size:clamp(26px,3.3vw,38px);
  line-height:1.22;
  letter-spacing:-.04em;
  font-weight:800;
}
.section-head p:not(.eyebrow){margin:0;color:var(--muted);font-size:14.5px;line-height:1.8}

/* ---------------- 关于 ---------------- */
.about-grid{
  display:grid;grid-template-columns:1.12fr .88fr;
  gap:clamp(30px,5vw,72px);
  align-items:center;
}
.about-copy p{
  margin:0 0 16px;max-width:560px;
  color:#96a5b1;font-size:14.5px;line-height:1.9;
}
.about-copy b{color:#e6f1f5;font-weight:700}
.text-link{
  display:inline-flex;align-items:center;gap:7px;
  margin-top:6px;padding-bottom:3px;
  font-size:13.5px;font-weight:700;color:var(--cyan);
  border-bottom:1px solid rgba(98,238,248,.28);
  transition:gap .2s, border-color .2s;
}
.text-link:hover{gap:11px;border-color:rgba(98,238,248,.6)}
.text-link .ico{width:15px;height:15px;stroke-width:2.1}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.about-stats>div{
  display:flex;flex-direction:column;gap:6px;
  padding:24px 22px;
  border-radius:16px;
  border:1px solid var(--line);
  background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.012));
}
.about-stats b{
  font-size:29px;font-weight:800;letter-spacing:-.04em;line-height:1.15;color:#fff;
}
.about-stats>div:nth-child(2) b{color:var(--cyan)}
.about-stats span{font-size:12.5px;color:#8696a2}

/* ---------------- 核心优势 ---------------- */
.pillars{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.pillar{
  padding:26px 24px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.075);
  background:linear-gradient(180deg, rgba(255,255,255,.042), rgba(255,255,255,.012));
  transition:border-color .25s, transform .25s, background .25s;
}
.pillar:hover{
  transform:translateY(-4px);
  border-color:rgba(98,238,248,.34);
  background:linear-gradient(180deg, rgba(98,238,248,.07), rgba(255,255,255,.015));
}
.icon-tile{
  width:42px;height:42px;margin-bottom:18px;
  display:grid;place-items:center;
  border-radius:12px;
  color:var(--cyan);
  background:rgba(98,238,248,.1);
  border:1px solid rgba(98,238,248,.18);
}
.icon-tile .ico{width:20px;height:20px}
.icon-tile.small{width:34px;height:34px;margin:0;border-radius:10px}
.icon-tile.small .ico{width:17px;height:17px}
.pillar h3{margin:0 0 8px;font-size:15.5px;font-weight:700;letter-spacing:-.01em}
.pillar p{margin:0;font-size:13.5px;line-height:1.75;color:#8f9ea9}

/* ---------------- 产品 ---------------- */
.products{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.product{
  padding:26px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.075);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(98,238,248,.075), transparent 62%),
    linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.01));
  transition:border-color .25s, transform .25s;
}
.product:hover{transform:translateY(-3px);border-color:rgba(98,238,248,.34)}
.product header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.tag{font-size:10px;font-weight:800;letter-spacing:.18em;color:#6f8792}
.product h3{margin:0 0 8px;font-size:19px;font-weight:800;letter-spacing:-.025em}
.product p{margin:0 0 16px;font-size:13.5px;line-height:1.8;color:#8f9ea9;text-wrap:pretty}
.tags{display:flex;flex-wrap:wrap;gap:7px}
.tags span{
  padding:5px 10px;border-radius:999px;
  font-size:11px;color:#a7b6c1;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.07);
}
.section-note{margin:18px 0 0;font-size:11.5px;color:#6b7a86}

/* ---------------- 安全 ---------------- */
.security{
  margin-top:24px;
  border-block:1px solid rgba(255,255,255,.06);
  background:linear-gradient(180deg, rgba(98,238,248,.055), rgba(98,238,248,.008) 46%, transparent);
}
.security-inner{
  display:grid;grid-template-columns:1.15fr .85fr;
  gap:clamp(30px,5vw,68px);
  padding-block:clamp(58px,7vw,96px);
  align-items:center;
}
.section-intro{
  margin:0 0 28px;max-width:520px;
  font-size:14.5px;line-height:1.85;color:#96a5b1;
}
.security-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.security-list>div{
  display:flex;gap:12px;padding:18px;
  border-radius:14px;
  background:rgba(255,255,255,.035);
  border:1px solid rgba(255,255,255,.07);
}
.security-list>div>span{font-size:10.5px;font-weight:800;color:var(--cyan);line-height:2}
.security-list p{margin:0;display:flex;flex-direction:column;gap:5px}
.security-list b{font-size:13px;font-weight:700}
.security-list small{font-size:11.5px;line-height:1.6;color:#8a99a5}

.por-card{
  padding:30px 26px;
  border-radius:22px;
  text-align:center;
  border:1px solid rgba(98,238,248,.18);
  background:
    radial-gradient(120% 80% at 50% 0%, rgba(98,238,248,.14), transparent 64%),
    rgba(9,14,19,.9);
  box-shadow:0 30px 80px -34px rgba(0,0,0,.95);
}
.por-ring{
  position:relative;
  width:132px;height:132px;margin:0 auto 18px;
  border-radius:50%;
  display:grid;place-items:center;
  background:conic-gradient(from 210deg, #8FF7FF, #38C6D6 42%, #1a5560 72%, rgba(255,255,255,.07) 72%);
}
.por-ring::before{content:"";position:absolute;inset:9px;border-radius:50%;background:#0a1015}
.por-ring span{position:relative;z-index:1;font-size:19px;font-weight:800;letter-spacing:.07em;color:#e2fbff}
.por-title{margin:0 0 3px;font-size:15px;font-weight:700}
.por-sub{margin:0 0 20px;font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:#6f8590}
.por-card ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;text-align:left}
.por-card li{display:flex;align-items:center;gap:9px;font-size:12.5px;color:#9aabb7}
.por-card li .ico{width:15px;height:15px;color:var(--cyan);stroke-width:2.2}

/* ---------------- 三步开始 ---------------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.steps article{
  padding:28px 24px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.075);
  background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.01));
}
.step-num{
  display:inline-grid;place-items:center;
  width:40px;height:40px;margin-bottom:16px;
  border-radius:12px;
  font-size:12.5px;font-weight:800;color:var(--cyan);
  background:rgba(98,238,248,.1);
  border:1px solid rgba(98,238,248,.22);
}
.steps h3{margin:0 0 8px;font-size:16px;font-weight:700}
.steps p{margin:0;font-size:13.5px;line-height:1.8;color:#8f9ea9}
.steps-cta{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:34px}

/* ---------------- FAQ ---------------- */
.faq-list{max-width:900px;border-top:1px solid rgba(255,255,255,.08)}
.faq-item{border-bottom:1px solid rgba(255,255,255,.08)}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  padding:22px 48px 22px 0;
  font-size:15.5px;font-weight:700;color:#eaf3f6;
  transition:color .2s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:8px;top:50%;
  width:14px;height:1.5px;margin-top:-.75px;background:#9fb3bf;
  transition:background .2s;
}
.faq-item summary::before{
  content:"";position:absolute;right:8px;top:50%;
  width:1.5px;height:14px;margin-top:-7px;background:#9fb3bf;
  transition:transform .25s, opacity .2s;
}
.faq-item[open] summary::before{transform:scaleY(0);opacity:0}
.faq-item summary:hover{color:var(--cyan)}
.faq-item summary:hover::after,.faq-item summary:hover::before{background:var(--cyan)}
.faq-item p{
  margin:0;padding:0 48px 24px 0;
  font-size:13.5px;line-height:1.9;color:#93a2ae;
}

/* ---------------- 底部 CTA ---------------- */
.final-cta{
  position:relative;overflow:hidden;
  margin-bottom:clamp(56px,7vw,88px);
  padding:clamp(46px,6vw,72px) 28px;
  border-radius:24px;
  text-align:center;
  border:1px solid rgba(98,238,248,.16);
  background:linear-gradient(180deg, rgba(98,238,248,.085), rgba(255,255,255,.02));
}
.final-glow{
  position:absolute;inset:-45% 18% auto;height:340px;
  background:radial-gradient(ellipse at 50% 0, rgba(98,238,248,.3), transparent 70%);
  filter:blur(10px);pointer-events:none;
}
.final-cta h2{
  position:relative;
  margin:0 0 12px;
  font-size:clamp(28px,4vw,42px);font-weight:800;letter-spacing:-.045em;
}
.final-cta>p:not(.eyebrow):not(.microcopy){
  position:relative;
  max-width:570px;margin:0 auto 28px;
  font-size:14.5px;line-height:1.85;color:#9dabb7;
}
.final-cta .microcopy{position:relative}

/* ---------------- 页脚 ---------------- */
.footer{
  border-top:1px solid rgba(255,255,255,.07);
  padding-block:38px 28px;
  background:rgba(0,0,0,.28);
}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.footer-brand p{margin:10px 0 0;font-size:12px;color:#6f7f8b}
.footer-logo{display:block;width:112px;height:auto}
.footer-links{display:flex;gap:22px;flex-wrap:wrap}
.footer-links a{font-size:13px;color:#8f9ea9;transition:color .2s}
.footer-links a:hover{color:var(--cyan)}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  margin-top:28px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.06);
  font-size:12px;color:#68767f;
}
.footer-disclosure{max-width:620px;font-size:11.5px;line-height:1.7;color:#5f6d77;text-align:right}

/* ---------------- 入场动效（只做位移，内容始终可见） ---------------- */
.js .reveal{transform:translateY(18px)}
.js .reveal.in{
  transform:none;
  transition:transform .7s cubic-bezier(.2,.7,.3,1);
}

/* ---------------- 响应式 ---------------- */
@media (max-width:1080px){
  .pillars{grid-template-columns:1fr 1fr}
  .hero-visual{min-height:560px}
  .hero-visual::after{width:520px;height:520px}
  .hero-visual::before{width:400px;height:400px}
  .glow{width:440px;height:440px}
}
@media (max-width:940px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .mobile-nav{display:block}
  .mobile-nav[hidden]{display:none}
  .hero{grid-template-columns:1fr;padding-top:36px}
  .hero-copy{max-width:640px}
  .hero-visual{min-height:520px;margin-top:18px}
  .about-grid{grid-template-columns:1fr}
  .security-inner{grid-template-columns:1fr}
  .por-card{max-width:420px;margin-inline:auto}
  .steps{grid-template-columns:1fr}
  .trust-strip{grid-template-columns:1fr 1fr}
  .trust-strip>div:nth-child(2){border-right:0}
  .trust-strip>div:nth-child(1),.trust-strip>div:nth-child(2){border-bottom:1px solid rgba(255,255,255,.06)}
}
@media (max-width:760px){
  .section-wrap{width:calc(100% - 32px)}
  .nav{height:66px;width:calc(100% - 32px)}
  .brand-logo{width:98px}
  .hero h1{font-size:clamp(34px,9vw,44px);letter-spacing:-.04em}
  .lead{font-size:14.5px;line-height:1.85;margin-bottom:26px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-points{gap:14px;font-size:11.5px}
  .pillars{grid-template-columns:1fr}
  .pillar{padding:22px 20px}
  .products{grid-template-columns:1fr}
  .steps-cta .btn{flex:1 1 100%}
  .security-list{grid-template-columns:1fr}
  .about-stats b{font-size:25px}
  .section-head{max-width:none}
  .section-head h2,.about-copy h2,.security-copy h2{text-wrap:balance}
  .faq-item summary{font-size:14.5px;padding:19px 44px 19px 0}
  .faq-item p{font-size:13px;padding:0 44px 20px 0}
  .final-cta{border-radius:20px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-disclosure{text-align:left}
  .visual-note{position:static;margin-top:6px;text-align:center}
}
@media (max-width:520px){
  .trust-strip{grid-template-columns:1fr}
  .trust-strip>div{border-right:0;border-bottom:1px solid rgba(255,255,255,.06);padding:16px 18px}
  .trust-strip>div:last-child{border-bottom:0}
  .about-stats>div{padding:18px 16px}
  .hero-visual{min-height:470px}
  .hero-visual::after,.hero-visual::before{display:none}
  .nav-actions .btn-sm{min-height:40px;padding:0 13px;font-size:12.5px;gap:6px}
  .nav-actions .btn-sm .ico{width:15px;height:15px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .js .reveal{transform:none}
}

/* ---------------- 旧类名兼容（404 等页面） ---------------- */
.topbar{
  position:sticky;top:0;z-index:60;height:76px;
  padding:0 max(24px,calc((100vw - 1240px)/2));
  display:flex;align-items:center;justify-content:space-between;
  border-bottom:1px solid rgba(255,255,255,.06);
  background:rgba(5,7,10,.72);
  backdrop-filter:blur(18px);
}
.button{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 22px;border-radius:12px;
  font-size:14px;font-weight:700;
}
.button-primary{background:linear-gradient(180deg,#8FF7FF,#2CC3D4);color:#032024}