/* ============ 基础变量 ============ */
:root{
  --bg:#070b16;
  --bg-2:#0b1122;
  --bg-3:#0e1528;
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.14);
  --txt:#eaf0ff;
  --txt-2:#a6b2cf;
  --txt-3:#6e7c9e;
  --brand:#3d7dff;
  --brand-2:#00d4c8;
  --brand-3:#8b5cf6;
  --warn:#ffb020;
  --ok:#22d38a;
  --radius:18px;
  --shadow:0 24px 60px rgba(0,0,0,.45);
  --max:1180px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--txt);
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
b{font-weight:700}

.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
.wrap-narrow{max-width:860px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 24px;border-radius:14px;font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(.97)}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,#2f6bff 45%,var(--brand-3) 130%);
  color:#fff;
  box-shadow:0 10px 30px rgba(61,125,255,.35),inset 0 1px 0 rgba(255,255,255,.25);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(61,125,255,.45),inset 0 1px 0 rgba(255,255,255,.25)}
.btn-ghost{background:rgba(255,255,255,.06);border-color:var(--line-2);color:var(--txt);backdrop-filter:blur(8px)}
.btn-ghost:hover{background:rgba(255,255,255,.11);transform:translateY(-2px)}
.btn-outline{background:transparent;border-color:var(--line-2);color:var(--txt)}
.btn-outline:hover{background:rgba(255,255,255,.07)}
.btn-lg{padding:15px 30px;border-radius:16px}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:11px}
.btn-txt{display:flex;flex-direction:column;align-items:flex-start;line-height:1.25}
.btn-txt small{font-size:11px;opacity:.78;font-weight:500}
.btn-txt b{font-size:16px;font-weight:700}
.ico-apple{width:26px;height:26px;flex:none}

/* ============ 导航 ============ */
.nav{
  position:sticky;top:0;z-index:60;
  backdrop-filter:blur(16px);
  background:rgba(7,11,22,.6);
  border-bottom:1px solid transparent;
  transition:background .25s,border-color .25s;
}
.nav.scrolled{background:rgba(7,11,22,.88);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;gap:24px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:.2px}
.brand-mark{
  width:34px;height:34px;flex:none;display:grid;place-items:center;border-radius:11px;
  background:linear-gradient(135deg,rgba(61,125,255,.9),rgba(0,212,200,.85));
  color:#fff;box-shadow:0 6px 18px rgba(61,125,255,.4);
}
.brand-mark svg{width:20px;height:20px}
.brand-mark.sm{width:28px;height:28px;border-radius:9px}
.brand-mark.sm svg{width:16px;height:16px}
.nav-links{display:flex;gap:26px;margin-left:auto;font-size:14.5px;color:var(--txt-2)}
.nav-links a{transition:color .2s}
.nav-links a:hover{color:var(--txt)}
.nav .btn-sm{margin-left:8px}

/* ============ 首屏 ============ */
.hero{position:relative;overflow:hidden;padding:76px 0 90px}
.hero-glow{
  position:absolute;inset:-30% 0 auto;height:820px;pointer-events:none;
  background:
    radial-gradient(560px 380px at 18% 22%,rgba(61,125,255,.32),transparent 65%),
    radial-gradient(520px 360px at 78% 12%,rgba(139,92,246,.26),transparent 62%),
    radial-gradient(600px 400px at 60% 60%,rgba(0,212,200,.14),transparent 65%);
  filter:blur(6px);
}
.hero-grid-bg{
  position:absolute;inset:0;pointer-events:none;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 25%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 50% 25%,#000 0%,transparent 72%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}

.pill{
  display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;
  background:rgba(34,211,138,.1);border:1px solid rgba(34,211,138,.28);
  color:#9defc6;font-size:13px;font-weight:600;margin-bottom:22px;
}
.pill .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 0 rgba(34,211,138,.6);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 9px rgba(34,211,138,0)}100%{box-shadow:0 0 0 0 rgba(34,211,138,0)}}

.hero h1{font-size:clamp(38px,5.4vw,62px);line-height:1.12;font-weight:800;letter-spacing:-1px}
.hero h1 em{
  display:block;font-style:normal;margin-top:6px;
  background:linear-gradient(100deg,#8fb6ff 0%,#5ee7dd 55%,#b79bff 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lead{margin-top:20px;font-size:17px;color:var(--txt-2);max-width:540px}

.cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.cta-center{justify-content:center}

.meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:18px;color:var(--txt-3);font-size:13.5px}
.meta i{width:4px;height:4px;border-radius:50%;background:var(--txt-3);opacity:.6}
.meta b{color:var(--txt-2)}

.notice{
  display:flex;gap:12px;margin-top:26px;padding:15px 18px;max-width:560px;
  border-radius:14px;border:1px solid rgba(255,176,32,.25);background:rgba(255,176,32,.07);
}
.notice svg{width:20px;height:20px;flex:none;color:var(--warn);margin-top:3px}
.notice p{font-size:14px;color:#f0dcb8}
.notice a{color:var(--warn);border-bottom:1px solid rgba(255,176,32,.5);font-weight:600}

.badges{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.badge{
  padding:6px 13px;border-radius:999px;font-size:12.5px;color:var(--txt-2);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
}

/* --- 手机预览 --- */
.hero-visual{position:relative;display:grid;place-items:center;min-height:520px}
.orb-a,.orb-b{position:absolute;border-radius:50%;filter:blur(60px);pointer-events:none}
.orb-a{width:280px;height:280px;background:rgba(61,125,255,.35);top:6%;left:-6%}
.orb-b{width:240px;height:240px;background:rgba(0,212,200,.25);bottom:4%;right:-4%}
.phone{
  position:relative;width:272px;height:552px;border-radius:44px;padding:11px;
  background:linear-gradient(160deg,#2a3350,#121826 55%);
  box-shadow:var(--shadow),0 0 0 1.5px rgba(255,255,255,.1);
  animation:float 7s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.phone-notch{position:absolute;top:11px;left:50%;transform:translateX(-50%);width:104px;height:24px;background:#0a0e18;border-radius:0 0 15px 15px;z-index:3}
.phone-screen{
  position:relative;height:100%;border-radius:34px;overflow:hidden;padding:16px 18px;
  background:radial-gradient(120% 80% at 50% 0%,#16224a 0%,#0a0f1e 55%,#070b16 100%);
  display:flex;flex-direction:column;align-items:center;
}
.ps-top{display:flex;justify-content:space-between;width:100%;font-size:11px;color:#c9d5f2;font-weight:600;padding:2px 4px 0}
.ps-status{display:flex;gap:3px;align-items:center}
.ps-status i{width:4px;height:9px;background:#c9d5f2;border-radius:1px;opacity:.85}
.ps-status i:nth-child(2){height:11px}
.ps-status i:nth-child(3){height:13px}
.ps-brand{margin-top:20px;font-size:14px;font-weight:700;letter-spacing:1.5px;color:#94a8d6;text-transform:uppercase}
.ps-orb{position:relative;width:168px;height:168px;margin-top:26px;display:grid;place-items:center}
.ps-ring{position:absolute;border-radius:50%;border:1.5px solid rgba(93,231,221,.35)}
.ps-ring.r1{width:168px;height:168px;animation:ripple 3s ease-out infinite}
.ps-ring.r2{width:132px;height:132px;animation:ripple 3s ease-out infinite .8s}
@keyframes ripple{0%{transform:scale(.85);opacity:.9}100%{transform:scale(1.18);opacity:0}}
.ps-power{
  width:106px;height:106px;border-radius:50%;display:grid;place-items:center;color:#fff;
  background:linear-gradient(145deg,#3d7dff,#00c9bd);
  box-shadow:0 0 40px rgba(0,201,189,.5),inset 0 2px 0 rgba(255,255,255,.35);
}
.ps-power svg{width:42px;height:42px}
.ps-state{margin-top:22px;font-size:19px;font-weight:700;color:#5ee7dd}
.ps-timer{font-size:13px;color:#7f8fb5;font-variant-numeric:tabular-nums}
.ps-node{
  display:flex;align-items:center;gap:9px;margin-top:20px;width:100%;
  padding:11px 13px;border-radius:14px;background:rgba(255,255,255,.06);border:1px solid var(--line);
}
.ps-node .flag{font-size:17px}
.ps-node .node-name{font-size:12.5px;font-weight:600;color:#dbe4fb}
.ps-node .node-ping{margin-left:auto;font-size:11.5px;color:var(--ok);font-weight:700}
.ps-stats{display:flex;gap:10px;width:100%;margin-top:11px}
.ps-stats div{flex:1;padding:10px;border-radius:13px;background:rgba(255,255,255,.045);border:1px solid var(--line);text-align:center}
.ps-stats b{display:block;font-size:14px;color:#eaf0ff}
.ps-stats small{font-size:10.5px;color:var(--txt-3)}

/* ============ 数据条 ============ */
.stats{border-block:1px solid var(--line);background:rgba(255,255,255,.02)}
.stats-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding-block:34px;text-align:center}
.stat b{
  display:block;font-size:34px;font-weight:800;letter-spacing:-.5px;
  background:linear-gradient(120deg,#a8c4ff,#5ee7dd);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat span{font-size:13.5px;color:var(--txt-3)}

/* ============ 通用区块 ============ */
.section{padding:88px 0}
.section-alt{background:linear-gradient(180deg,transparent,rgba(255,255,255,.022) 12%,rgba(255,255,255,.022) 88%,transparent)}
.sec-head{text-align:center;max-width:680px;margin:0 auto 52px}
.kicker{
  display:inline-block;padding:5px 14px;border-radius:999px;font-size:12.5px;font-weight:700;letter-spacing:1px;
  color:#8fb6ff;background:rgba(61,125,255,.12);border:1px solid rgba(61,125,255,.28);margin-bottom:16px;
}
.kicker-warn{color:#ffcf80;background:rgba(255,176,32,.1);border-color:rgba(255,176,32,.3)}
.sec-head h2{font-size:clamp(27px,3.4vw,40px);font-weight:800;letter-spacing:-.6px;line-height:1.25}
.sec-head p{margin-top:14px;color:var(--txt-2);font-size:15.5px}

/* ============ 功能卡片 ============ */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{
  padding:26px 22px;border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  border:1px solid var(--line);
  transition:transform .22s ease,border-color .22s ease,background .22s ease;
}
.card:hover{transform:translateY(-5px);border-color:var(--line-2);background:linear-gradient(180deg,rgba(255,255,255,.09),rgba(255,255,255,.03))}
.card-ico{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;margin-bottom:16px}
.card-ico svg{width:23px;height:23px}
.i-blue{background:rgba(61,125,255,.15);color:#8fb6ff}
.i-green{background:rgba(34,211,138,.14);color:#6ee7b0}
.i-purple{background:rgba(139,92,246,.15);color:#c0a8ff}
.i-orange{background:rgba(255,176,32,.14);color:#ffcf80}
.card h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.card p{font-size:14px;color:var(--txt-2);line-height:1.72}

/* ============ 安装步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{
  position:relative;padding:30px 26px 26px;border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);overflow:hidden;
}
.step::after{content:"";position:absolute;inset:0 auto auto 0;height:2px;width:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2),transparent)}
.step-num{
  font-size:40px;font-weight:800;line-height:1;margin-bottom:14px;
  background:linear-gradient(120deg,#3d7dff,#00d4c8);-webkit-background-clip:text;background-clip:text;color:transparent;opacity:.9;
}
.step h3{font-size:18px;font-weight:700;margin-bottom:10px}
.step p{font-size:14.5px;color:var(--txt-2)}
.step b{color:#cfe0ff}
.link-btn{display:inline-block;margin-top:16px;font-size:14px;font-weight:600;color:#8fb6ff}
.link-btn:hover{color:#b8d0ff}
.link-btn.muted{color:var(--ok)}

/* ============ 企业签授权 ============ */
.trust-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start;margin-bottom:52px}
.trust-steps{list-style:none;display:flex;flex-direction:column;gap:4px}
.trust-steps li{display:flex;gap:16px;padding:16px 0;position:relative}
.trust-steps li:not(:last-child)::before{
  content:"";position:absolute;left:17px;top:52px;bottom:-4px;width:1.5px;
  background:linear-gradient(180deg,rgba(61,125,255,.5),rgba(61,125,255,.06));
}
.ts-n{
  width:35px;height:35px;flex:none;border-radius:50%;display:grid;place-items:center;
  font-weight:700;font-size:14.5px;color:#fff;
  background:linear-gradient(140deg,var(--brand),#2f6bff);
  box-shadow:0 6px 16px rgba(61,125,255,.35);z-index:1;
}
.ts-body h4{font-size:16.5px;font-weight:700;margin-bottom:6px}
.ts-body p{font-size:14.5px;color:var(--txt-2)}
.ts-body b{color:#cfe0ff}
.path{
  display:inline-block;padding:2px 9px;border-radius:7px;font-size:13.5px;
  background:rgba(61,125,255,.13);border:1px solid rgba(61,125,255,.25);color:#b3cbff;
}
.dev-name{
  display:inline-block;padding:2px 10px;border-radius:7px;font-weight:700;
  background:rgba(255,176,32,.13);border:1px solid rgba(255,176,32,.32);color:#ffcf80;
}

/* iOS 设置页模拟 */
.trust-visual{display:flex;flex-direction:column;gap:16px;position:sticky;top:92px}
.ios-card{
  border-radius:18px;overflow:hidden;border:1px solid var(--line-2);
  background:linear-gradient(180deg,#151b2c,#0f1524);box-shadow:var(--shadow);
}
.ios-nav{
  display:flex;align-items:center;padding:12px 14px;border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.04);position:relative;
}
.ios-back{font-size:14px;color:#4c8cff}
.ios-title{position:absolute;left:50%;transform:translateX(-50%);font-size:14.5px;font-weight:600}
.ios-group-title{padding:16px 16px 7px;font-size:12px;color:var(--txt-3);letter-spacing:.4px}
.ios-row{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:14px 16px;font-size:14.5px;border-top:1px solid var(--line);
  background:rgba(255,255,255,.025);position:relative;
}
.ios-row.single{justify-content:center;color:#4c8cff;font-weight:600;border-top:none}
.ios-val{color:var(--txt-3);font-size:13.5px}
.ios-row.highlight{
  background:rgba(255,176,32,.1);border-inline:0;
  box-shadow:inset 3px 0 0 var(--warn);
  animation:blink 2.4s ease-in-out infinite;
}
@keyframes blink{0%,100%{background:rgba(255,176,32,.08)}50%{background:rgba(255,176,32,.18)}}
.tap-hint{
  position:absolute;right:-8px;top:-13px;font-size:11px;font-weight:700;color:#0b1122;
  background:var(--warn);padding:2px 9px;border-radius:999px;box-shadow:0 4px 12px rgba(255,176,32,.4);
}
.ios-note{padding:11px 16px 15px;font-size:12px;color:var(--txt-3);line-height:1.6}
.ios-card-2{border-color:rgba(76,140,255,.3)}

/* 注意事项 */
.warn-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.warn-card{
  padding:22px;border-radius:16px;border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.018));
}
.warn-card h4{font-size:15.5px;font-weight:700;margin-bottom:9px;display:flex;align-items:center;gap:9px}
.wico{font-size:17px}
.warn-card p{font-size:14px;color:var(--txt-2)}
.warn-card b{color:#ffd79a}

/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:11px}
.faq details{
  border:1px solid var(--line);border-radius:14px;overflow:hidden;
  background:rgba(255,255,255,.035);transition:border-color .2s,background .2s;
}
.faq details[open]{border-color:rgba(61,125,255,.35);background:rgba(61,125,255,.05)}
.faq summary{
  list-style:none;cursor:pointer;padding:17px 52px 17px 20px;
  font-size:15.5px;font-weight:600;position:relative;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:21px;font-weight:400;color:#8fb6ff;transition:transform .22s;
}
.faq details[open] summary::after{content:"−"}
.faq-body{padding:0 20px 18px;color:var(--txt-2);font-size:14.5px}

/* ============ 底部 CTA ============ */
.final-cta{padding:20px 0 96px}
.fc-box{
  position:relative;overflow:hidden;text-align:center;padding:60px 30px;border-radius:26px;
  border:1px solid var(--line-2);
  background:
    radial-gradient(600px 300px at 50% 0%,rgba(61,125,255,.28),transparent 70%),
    linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
}
.fc-box h2{font-size:clamp(25px,3.2vw,38px);font-weight:800;letter-spacing:-.6px}
.fc-box>p{margin-top:12px;color:var(--txt-2);font-size:16px}
.fc-note{margin-top:20px;font-size:13px;color:var(--txt-3)}

/* ============ 页脚 ============ */
.footer{border-top:1px solid var(--line);padding:42px 0 110px;background:rgba(0,0,0,.25)}
.footer-inner{display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center}
.f-brand{display:flex;align-items:center;gap:9px;font-weight:700}
.f-links{display:flex;flex-wrap:wrap;justify-content:center;gap:22px;font-size:14px;color:var(--txt-2)}
.f-links a:hover{color:var(--txt)}
.f-copy,.f-icp{font-size:12.5px;color:var(--txt-3);max-width:640px}

/* ============ 移动端固定下载条 ============ */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  align-items:center;gap:12px;padding:11px 16px calc(11px + env(safe-area-inset-bottom));
  background:rgba(10,15,28,.92);backdrop-filter:blur(18px);border-top:1px solid var(--line-2);
  transform:translateY(110%);transition:transform .3s ease;
}
.sticky-bar.show{transform:translateY(0)}
.sb-info{display:flex;flex-direction:column;line-height:1.3}
.sb-info b{font-size:15px}
.sb-info small{font-size:11.5px;color:var(--txt-3)}
.sticky-bar .btn{margin-left:auto;padding:12px 22px}

/* ============ 微信遮罩 ============ */
.wx-mask{
  position:fixed;inset:0;z-index:200;background:rgba(0,0,0,.86);
  padding:24px;display:flex;flex-direction:column;align-items:flex-end;
}
.wx-mask[hidden]{display:none}
.wx-arrow{font-size:52px;line-height:1;color:#fff;margin-right:12px;animation:bounce 1.4s ease-in-out infinite}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.wx-tip{margin-top:16px;width:100%;text-align:right;color:#fff;font-size:17px;line-height:2}
.wx-tip b{color:#5ee7dd}
.wx-copy,.wx-close{
  display:block;margin-left:auto;margin-top:14px;padding:11px 24px;border-radius:12px;
  font-size:15px;font-weight:600;cursor:pointer;font-family:inherit;
}
.wx-copy{background:linear-gradient(135deg,var(--brand),var(--brand-3));color:#fff;border:none}
.wx-close{background:transparent;border:1px solid rgba(255,255,255,.35);color:#fff}

/* ============ 入场动画 ============ */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1000px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-copy{text-align:center}
  .lead{margin-inline:auto}
  .cta,.badges,.meta{justify-content:center}
  .notice{margin-inline:auto;text-align:left}
  .trust-layout{grid-template-columns:1fr;gap:34px}
  .trust-visual{position:static;max-width:420px;margin:0 auto}
}
@media (max-width:760px){
  .nav-links{display:none}
  .nav .btn-sm{margin-left:auto}
  .hero{padding:48px 0 66px}
  .hero-visual{min-height:auto}
  .phone{transform:scale(.92)}
  .section{padding:62px 0}
  .steps{grid-template-columns:1fr}
  .warn-grid{grid-template-columns:1fr}
  .stats-inner{grid-template-columns:repeat(2,1fr);gap:26px 12px;padding-block:28px}
  .stat b{font-size:29px}
  .sticky-bar{display:flex}
  .fc-box{padding:44px 20px}
  .btn-lg{width:100%}
  .cta{flex-direction:column}
}
@media (max-width:420px){
  .grid-4{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}