:root{--bg:#f6f7f9;--white:#ffffff;--ink:#0b0d12;--ink-2:#3d4350;--ink-3:#666e7a;--ink-4:#79818f;--accent:#134cff;--accent-2:#6c8cff;--accent-soft:#eef2ff;--accent-line:#c9d4ff;--line:#e6e8ec;--line-2:#d5d9e0;--band:#0b0d12;--band-2:#141824;--on-band:#f2f4f8;--on-band-2:#9aa3b2;--r-s:12px;--r-m:18px;--r-l:26px;--shadow-s:0 1px 2px rgba(11,13,18,.04),0 10px 30px -18px rgba(11,13,18,.18);--shadow-m:0 30px 70px -34px rgba(11,13,18,.34);--ease:cubic-bezier(.16,1,.3,1);--maxw:1200px;color-scheme:light}:root[data-theme=dark]{--bg:#0b0e14;--white:#141a26;--ink:#f2f4f8;--ink-2:#c3cad8;--ink-3:#9aa3b2;--ink-4:#8b94a8;--accent:#5b83ff;--accent-2:#8ba4ff;--accent-soft:rgba(19,76,255,.18);--accent-line:rgba(108,140,255,.4);--line:#222a3a;--line-2:#2b3446;--band:#10151f;--band-2:#161d2b;color-scheme:dark}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Segoe 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summary:after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;border-radius:2px;background:var(--accent);transition:right .3s var(--ease)}.nav-drop:hover summary,.nav-drop[open] summary{color:var(--ink)}.nav-drop:hover summary:after,.nav-drop[open] summary:after,.nav-drop:focus-within summary:after{right:0}.nav-drop .caret{width:7px;height:7px;border-right:1.7px solid currentColor;border-bottom:1.7px solid currentColor;transform:rotate(45deg) translate(-1px,-1px);transition:transform .25s var(--ease)}.nav-drop[open] .caret{transform:rotate(-135deg) translate(-1px,-1px)}.drop-panel{position:absolute;top:calc(100% + 12px);left:-16px;min-width:268px;padding:8px;border-radius:var(--r-m);background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow-m);opacity:0;visibility:hidden;transform:translateY(-6px);transition:opacity .22s var(--ease),transform .22s var(--ease),visibility 0s .22s}.drop-panel:before{content:"";position:absolute;left:0;right:0;top:-14px;height:14px}.nav-drop:hover .drop-panel,.nav-drop:focus-within .drop-panel,.nav-drop[open] .drop-panel{opacity:1;visibility:visible;transform:none;transition:opacity .22s var(--ease),transform .22s var(--ease),visibility 0s}.drop-panel a{display:block;padding:10px 12px;border-radius:12px}.drop-panel a:after{content:none}.drop-panel a:hover{background:var(--accent-soft);color:inherit}.drop-panel a b{display:block;font-size:14px;font-weight:700;color:var(--ink)}.drop-panel a span{display:block;margin-top:3px;font-size:12.5px;color:var(--ink-3)}.drop-panel .drop-all{margin-top:6px;padding:11px 12px 9px;border-top:1px solid var(--line);border-radius:0 0 12px 12px;font-size:13px;font-weight:600;color:var(--accent)}.drop-panel i{font-style:normal}.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}.nav-cta{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--ink);background:var(--white);border:1px solid var(--line-2);border-radius:999px;padding:9px 18px;transition:all .25s var(--ease)}.nav-cta:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px);box-shadow:var(--shadow-s)}.nav-cta i{font-style:normal;width:7px;height:7px;border-radius:50%;background:var(--accent)}.theme-toggle{width:32px;height:32px;border-radius:50%;border:1px solid var(--line-2);background:var(--white);color:var(--ink-2);display:grid;place-items:center;cursor:pointer;transition:all .25s var(--ease)}.theme-toggle:hover{border-color:var(--accent);color:var(--accent)}.theme-toggle svg{width:15px;height:15px}.theme-toggle .sun{display:none}:root[data-theme=dark] .theme-toggle .moon{display:none}:root[data-theme=dark] .theme-toggle .sun{display:block}:root[data-theme=dark] .nav{background:#0b0e14d1}.btn{display:inline-flex;align-items:center;gap:9px;border-radius:999px;padding:14px 30px;font-size:15px;font-weight:650;transition:transform .25s var(--ease),box-shadow .25s,background .25s,color .25s,border-color .25s}.btn-dark{background:linear-gradient(135deg,#10141c,#0b0d12 55%,#131a2e);color:#fff;box-shadow:0 14px 34px -16px #0b0d1280}.btn-dark:hover{transform:translateY(-2px);box-shadow:0 20px 44px -16px #134cff73}.btn-dark i{font-style:normal;transition:transform .25s var(--ease)}.btn-dark:hover i{transform:translate(4px)}.btn-ghost{background:var(--white);color:var(--ink-2);border:1px solid var(--line-2)}.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}footer{background:var(--band);color:var(--on-band-2);padding:64px 0 34px}.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}.fgrid h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px}.fgrid a{display:block;font-size:13.5px;padding:5px 0;transition:color .2s}.fgrid a:hover{color:#fff}.fbrand p{margin-top:14px;font-size:13.5px;line-height:1.9;max-width:24em}.fbot{margin-top:48px;padding-top:24px;border-top:1px solid #1c2231;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12.5px}@media (prefers-reduced-motion: no-preference){@supports (animation-timeline: view()){[data-reveal]{animation:vrise linear both;animation-timeline:view();animation-range:entry 6% entry 32%}@keyframes vrise{0%{transform:translateY(30px)}to{transform:none}}}}@media (max-width:1020px){.fgrid{grid-template-columns:1fr 1fr}}@media (max-width:720px){.nav-links{display:none}.wrap{padding:0 20px}.fgrid{grid-template-columns:1fr}}