:root{
  --ink:#0b1220;
  --muted:#64748b;
  --line:#e5eaf2;
  --paper:#f6f8fc;
  --white:#ffffff;
  --blue:#2563eb;
  --blue-2:#1d4ed8;
  --cyan:#06b6d4;
  --green:#10b981;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{overflow-x:hidden}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,Segoe UI,sans-serif;line-height:1.62;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{width:min(var(--max),calc(100% - 48px));margin:0 auto}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
header{position:sticky;top:0;z-index:50;background:rgba(246,248,252,.86);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;font-weight:850;letter-spacing:-.03em;font-size:18px}
.brand i{width:34px;height:34px;border-radius:11px;background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;display:grid;place-items:center;font-style:normal;font-size:15px;font-weight:900;box-shadow:0 10px 24px rgba(37,99,235,.24)}
.nav-links{display:flex;gap:30px;font-size:13px;color:#475569}
.nav-links a:hover{color:var(--blue)}
.nav-actions{display:flex;gap:9px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:11px;padding:11px 18px;font-size:13px;font-weight:750;border:1px solid transparent;transition:.2s;white-space:nowrap}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 12px 28px rgba(37,99,235,.22)}
.btn-primary:hover{background:var(--blue-2);transform:translateY(-1px)}
.btn-ghost{background:#fff;border-color:var(--line);color:#334155}
.btn-ghost:hover{border-color:#cbd5e1;transform:translateY(-1px)}

.hero{padding:68px 0 52px;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;right:-120px;top:20px;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(37,99,235,.10),transparent 62%);pointer-events:none}
.topline{display:flex;justify-content:space-between;gap:20px;color:#7b8798;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:30px}
.topline b{color:var(--blue);font-weight:800}
h1{position:relative;font-size:clamp(54px,8vw,110px);line-height:.94;letter-spacing:-.075em;margin:0 0 30px;font-weight:900;max-width:1050px}
h1 em{font-style:normal;color:var(--blue);-webkit-text-fill-color:var(--blue);background:none;text-shadow:none}
.hero-bottom{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:72px;align-items:end}
.lead{font-size:16.5px;color:#526075;max-width:560px;margin:0}
.hero-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:26px}
.hero-note{display:flex;gap:18px;flex-wrap:wrap;color:#7b8798;font-size:11.5px;margin-top:22px}
.hero-note span{display:inline-flex;align-items:center;gap:6px}
.hero-note svg{width:13px;height:13px;color:var(--green)}

.auth-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 26px 70px rgba(15,23,42,.10);padding:16px;transform:rotate(.7deg)}
.auth-top{display:flex;align-items:center;justify-content:space-between;padding:2px 4px 12px;border-bottom:1px solid #eef2f7}
.dots{display:flex;gap:6px}.dots i{width:8px;height:8px;border-radius:50%;background:#e2e8f0}.dots i:first-child{background:#bfdbfe}.dots i:nth-child(2){background:#a5f3fc}.dots i:nth-child(3){background:#bbf7d0}
.auth-top b{font-size:10px;color:#94a3b8;letter-spacing:.12em}
.auth-body{padding:15px 4px 2px}
.auth-app{display:flex;align-items:center;justify-content:space-between;margin-bottom:13px}
.auth-app small{display:block;font-size:9.5px;color:#94a3b8;letter-spacing:.08em;text-transform:uppercase}
.auth-app strong{font-size:14px}
.status-pill{display:inline-flex;align-items:center;gap:6px;background:#ecfdf5;color:#047857;border:1px solid #a7f3d0;border-radius:999px;padding:5px 9px;font-size:10.5px;font-weight:750}
.status-pill i{width:6px;height:6px;border-radius:50%;background:var(--green)}
.field{background:#f8fafc;border:1px solid #e8eef6;border-radius:10px;padding:10px 12px;margin-bottom:9px}
.field label{display:block;font-size:9.5px;color:#94a3b8;letter-spacing:.06em;margin-bottom:3px}
.field code{font-size:12px}
.auth-row{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.mini{padding:9px 10px;border-radius:9px;background:#f8fafc;border:1px solid #e8eef6}
.mini small{display:block;font-size:9.5px;color:#94a3b8;margin-bottom:2px}
.mini b{font-size:11.5px;color:#334155}
.chips{display:flex;gap:5px;flex-wrap:wrap;margin-top:11px}
.chip{font-size:9.5px;color:#475569;background:#f1f5f9;border:1px solid #e2e8f0;border-radius:999px;padding:4px 8px}
.chip.blue{background:#eff6ff;border-color:#dbeafe;color:#1d4ed8}
.auth-foot{display:flex;justify-content:space-between;gap:10px;margin-top:12px;padding-top:11px;border-top:1px solid #eef2f7;font-size:10px;color:#94a3b8}

.ticker{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.45)}
.ticker .inner{display:flex;gap:34px;flex-wrap:wrap;padding:13px 0;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:#64748b}
.ticker i{font-style:normal;color:var(--blue)}

section{padding:82px 0;border-bottom:1px solid var(--line)}
.section-head{display:grid;grid-template-columns:.26fr .74fr;gap:40px;margin-bottom:44px}
.section-no{font-size:10.5px;letter-spacing:.16em;color:#94a3b8;text-transform:uppercase}
.section-no b{display:block;color:var(--blue);font-size:25px;letter-spacing:-.04em;margin-bottom:5px}
h2{font-size:clamp(32px,4.6vw,56px);line-height:1.02;letter-spacing:-.055em;margin:0 0 14px;font-weight:880}
h2 em{font-style:normal;color:var(--blue)}
.section-head p{color:var(--muted);font-size:14.5px;margin:0;max-width:620px}

.feature-list{border-top:1px solid var(--ink)}
.feature{display:grid;grid-template-columns:.1fr .3fr 1fr;gap:24px;padding:23px 0;border-bottom:1px solid var(--line);align-items:start;transition:.18s}
.feature:hover{background:rgba(37,99,235,.025)}
.feature .no{font-size:10.5px;color:var(--blue);font-weight:800;letter-spacing:.08em}
.feature h3{font-size:17px;margin:0;letter-spacing:-.025em}
.feature p{font-size:13px;color:#5f6c7e;margin:0;max-width:620px}
.feature .meta{grid-column:3;font-size:9.5px;color:#94a3b8;letter-spacing:.1em;text-transform:uppercase;margin-top:7px}

.security-band{background:var(--ink);color:#e2e8f0;border-bottom:1px solid var(--ink)}
.security-band .wrap{padding:70px 0}
.security-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:58px;align-items:center}
.kicker{font-size:10.5px;font-weight:850;letter-spacing:.16em;color:var(--cyan);text-transform:uppercase}
.security-band h2{color:#fff}
.security-band p{color:#94a3b8;font-size:14.5px;max-width:470px}
.sec-list{display:grid;gap:10px;margin-top:24px}
.sec-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid rgba(148,163,184,.16)}
.sec-item:last-child{border-bottom:0}
.sec-item svg{width:17px;height:17px;color:#7dd3fc;flex:0 0 auto;margin-top:3px}
.sec-item b{display:block;font-size:12.5px;color:#f1f5f9;margin-bottom:2px}
.sec-item span{font-size:11.5px;color:#8a9ab0}
.codebox{background:#070c17;border:1px solid rgba(148,163,184,.2);border-radius:14px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.35)}
.codebar{height:40px;display:flex;align-items:center;justify-content:space-between;padding:0 14px;border-bottom:1px solid rgba(148,163,184,.16);font-size:10px;color:#64748b}
.codebar b{color:#94a3b8;font-weight:700;letter-spacing:.08em}
pre{margin:0;padding:20px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:11.5px;line-height:1.8;color:#cbd5e1;overflow:auto}
.k{color:#7dd3fc}.s{color:#86efac}.c{color:#64748b}.n{color:#fbbf24}

.process{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.step{padding:22px 18px;border-right:1px solid var(--line)}
.step:last-child{border-right:0}
.step b{display:block;font-size:10px;letter-spacing:.12em;color:var(--blue);margin-bottom:20px}
.step h3{font-size:14.5px;margin:0 0 5px}
.step p{font-size:11.5px;color:var(--muted);margin:0}

.quote{padding:70px 0;border-bottom:1px solid var(--line)}
.quote blockquote{font-size:clamp(25px,3.6vw,42px);line-height:1.24;letter-spacing:-.045em;margin:0;max-width:900px;font-weight:720}
.quote blockquote:before,.quote blockquote:after{color:var(--blue)}
.quote blockquote:before{content:"“"}
.quote blockquote:after{content:"”"}
.quote .by{margin-top:18px;font-size:10.5px;letter-spacing:.12em;color:#94a3b8;text-transform:uppercase}

.cta{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:end;padding:72px 0}
.cta h2{max-width:730px;margin:0}
.cta p{color:var(--muted);font-size:13px;margin:10px 0 0}
.cta .btn{white-space:nowrap}
footer{padding:26px 0 40px;color:#94a3b8;font-size:11px}
.footer-row{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.footer-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-links a:hover{color:var(--blue)}

@media(max-width:980px){
  .hero-bottom,.security-grid,.section-head{grid-template-columns:1fr;gap:28px}
  .section-head{margin-bottom:30px}
  .feature{grid-template-columns:.12fr .88fr}
  .feature p{grid-column:2}
  .feature .meta{grid-column:2}
  .process{grid-template-columns:repeat(2,1fr)}
  .step:nth-child(2){border-right:0}
  .step:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .nav-links{display:none}
  .cta{grid-template-columns:1fr}
  .auth-card{transform:none}
}
@media(max-width:620px){
  .wrap{width:auto;margin-left:15px;margin-right:15px;padding-left:0;padding-right:0}
  .nav-actions{display:none}
  .hero{padding-top:44px}
  h1{font-size:38px;letter-spacing:-.05em;word-break:break-word;overflow-wrap:anywhere}
  .topline{display:block}
  .topline span{display:block;margin-top:4px}
  .feature{grid-template-columns:1fr;gap:6px}
  .feature p,.feature .meta{grid-column:1}
  .process{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:1px solid var(--line)}
  .step:last-child{border-bottom:0}
  .security-band .wrap{padding:54px 0}
  .hero-actions .btn{width:100%}
  .auth-row{grid-template-columns:1fr}
  section{padding:60px 0}
}