:root{--brand: #6366F1;--brand-2: #06B6D4;--grad-brand: linear-gradient(135deg, #6366F1 0%, #06B6D4 100%);--grad-text: linear-gradient(120deg, #A5B4FC 0%, #67E8F9 100%);--grad-brand-soft: linear-gradient(135deg, rgba(99, 102, 241, .16) 0%, rgba(6, 182, 212, .16) 100%);--bg-0: #04060D;--bg-1: #070B18;--bg-2: #0B1224;--card: rgba(151, 176, 255, .045);--card-strong: rgba(151, 176, 255, .085);--line: rgba(151, 176, 255, .13);--line-strong: rgba(151, 176, 255, .26);--ink: #EDF2FF;--ink-2: #A9B6D9;--muted: #6F7DA6;--ok: #34D399;--warn: #FBBF24;--bad: #F87171;--glow-indigo: rgba(99, 102, 241, .32);--glow-cyan: rgba(6, 182, 212, .22);--shadow-card: 0 18px 48px rgba(2, 6, 20, .5);--shadow-pop: 0 24px 80px rgba(2, 6, 20, .65);--shadow-brand: 0 8px 24px rgba(99, 102, 241, .4);--radius-lg: 18px;--radius-md: 14px;--radius-sm: 10px;--glass-header: rgba(7, 11, 24, .88);--glass-solid: rgba(11, 18, 36, .72);--on-brand: #FFFFFF;--on-brand-soft: rgba(255, 255, 255, .35)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,HarmonyOS Sans SC,Microsoft YaHei,sans-serif;background:var(--bg-1);color:var(--ink);font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}::selection{background:#6366f166}.wrap{max-width:1200px;margin:0 auto;padding:0 24px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--card);color:var(--ink);font-size:14px;cursor:pointer;transition:border-color .2s,background .2s,transform .2s,box-shadow .2s}.btn:hover{border-color:var(--line-strong);background:var(--card-strong)}.btn-primary{background:var(--grad-brand);border:none;color:var(--on-brand);font-weight:600;box-shadow:var(--shadow-brand)}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 14px 38px #6366f180;background:var(--grad-brand)}.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none!important;box-shadow:none}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);padding:22px 24px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:var(--shadow-card)}.section{padding:88px 0;position:relative}.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.sec-head{text-align:center;max-width:640px;margin:0 auto 48px}.sec-kicker{display:inline-block;font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-2);border:1px solid var(--line);border-radius:999px;padding:5px 14px;margin-bottom:16px;background:var(--card)}.sec-title{font-size:clamp(26px,4vw,36px);font-weight:700;letter-spacing:.01em}.sec-desc{color:var(--muted);margin-top:12px;font-size:15px}@keyframes fadeUp{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}.fade-up{animation:fadeUp .7s cubic-bezier(.2,.7,.3,1) both}.d-1{animation-delay:.08s}.d-2{animation-delay:.16s}.d-3{animation-delay:.24s}@media(prefers-reduced-motion:reduce){.fade-up{animation:none}html{scroll-behavior:auto}}.page{padding:48px 0 72px}.page-title{font-size:26px;font-weight:700}.doc-meta{color:var(--muted);font-size:13px;margin-top:6px}.doc{margin-top:24px}.doc h3{font-size:16px;margin:22px 0 8px;color:var(--ink)}.doc p{color:var(--ink-2);font-size:14px;margin-top:8px;text-align:justify}.doc strong,.doc b{color:var(--ink)}.doc a{color:var(--brand-2)}.doc a:hover{text-decoration:underline}.doc ul{margin:8px 0 8px 20px}.doc ul li{color:var(--ink-2);font-size:14px;margin-top:6px}@media(max-width:768px){.section{padding:56px 0}.sec-head{margin-bottom:32px}}