:root{--brand-1: #3b6ff6;--brand-2: #8b5cf6;--bg: #f8fafc;--surface: #ffffff;--surface-2: #f1f5f9;--text: #0f172a;--muted: #5b6577;--border: #e2e8f0;--accent: #5b5ff6;--accent-strong: #4338ca;--accent-soft: #eef0ff;--ok: #15803d;--ok-soft: #e8f7ee;--err: #b91c1c;--err-soft: #fdecec;--glow-1: rgb(59 111 246 / .12);--glow-2: rgb(139 92 246 / .14);--shadow-sm: 0 1px 2px rgb(15 23 42 / .08);--shadow-md: 0 8px 24px rgb(15 23 42 / .08);--shadow-lg: 0 24px 60px rgb(15 23 42 / .16);--btn-glow: rgb(91 95 246 / .38);--font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--mono: ui-monospace, "Cascadia Mono", Consolas, "SF Mono", monospace;color-scheme:light}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg: #0b1020;--surface: #121a2e;--surface-2: #0f1628;--text: #e7ecf5;--muted: #9aa6bd;--border: #243049;--accent: #7c7ffa;--accent-strong: #a5a8ff;--accent-soft: rgb(124 127 250 / .14);--ok: #4ade80;--ok-soft: rgb(74 222 128 / .12);--err: #f87171;--err-soft: rgb(248 113 113 / .12);--glow-1: rgb(59 111 246 / .18);--glow-2: rgb(139 92 246 / .2);--shadow-sm: 0 1px 2px rgb(0 0 0 / .4);--shadow-md: 0 8px 24px rgb(0 0 0 / .35);--shadow-lg: 0 24px 60px rgb(0 0 0 / .5);color-scheme:dark}}:root[data-theme=dark]{--bg: #0b1020;--surface: #121a2e;--surface-2: #0f1628;--text: #e7ecf5;--muted: #9aa6bd;--border: #243049;--accent: #7c7ffa;--accent-strong: #a5a8ff;--accent-soft: rgb(124 127 250 / .14);--ok: #4ade80;--ok-soft: rgb(74 222 128 / .12);--err: #f87171;--err-soft: rgb(248 113 113 / .12);--glow-1: rgb(59 111 246 / .18);--glow-2: rgb(139 92 246 / .2);--shadow-sm: 0 1px 2px rgb(0 0 0 / .4);--shadow-md: 0 8px 24px rgb(0 0 0 / .35);--shadow-lg: 0 24px 60px rgb(0 0 0 / .5);color-scheme:dark}:root[data-page=yangialifbo]{--bg: #0b1020;--surface: #121a2e;--surface-2: #0f1628;--text: #e7ecf5;--muted: #9aa6bd;--border: #243049;--accent: #7c7ffa;--accent-strong: #a5a8ff;--accent-soft: rgb(124 127 250 / .14);--ok: #4ade80;--ok-soft: rgb(74 222 128 / .12);--err: #f87171;--err-soft: rgb(248 113 113 / .12);--glow-1: rgb(59 111 246 / .18);--glow-2: rgb(139 92 246 / .2);--shadow-sm: 0 1px 2px rgb(0 0 0 / .4);--shadow-md: 0 8px 24px rgb(0 0 0 / .35);--shadow-lg: 0 24px 60px rgb(0 0 0 / .5);color-scheme:dark;--brand-1: #ee4b3b;--brand-2: #f5934a;--bg: #09090b;--surface: #131316;--surface-2: #0e0e11;--text: #f4f4f5;--muted: #a1a1aa;--border: #27272c;--accent: #f05a3c;--accent-strong: #ff8a5c;--accent-soft: rgb(240 90 60 / .14);--glow-1: rgb(238 75 59 / .22);--glow-2: rgb(245 147 74 / .18);--btn-glow: rgb(238 75 59 / .4)}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:80px;-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--accent-strong)}h1,h2,h3{line-height:1.2}h2{font-size:clamp(1.6rem,3vw,2.2rem);letter-spacing:-.015em}.container{width:100%;max-width:1160px;margin:0 auto;padding:0 24px}.container.narrow{max-width:760px}.section{padding:4.5rem 0 0}.section.alt{margin-top:4.5rem;padding-bottom:4.5rem;background:var(--surface-2);border-block:1px solid var(--border)}.section.alt+.section{padding-top:4.5rem}.center{text-align:center}.lead{margin:0 0 1rem;color:var(--muted);font-size:1.12rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.7rem 1.2rem;border:1px solid transparent;border-radius:12px;font:inherit;font-weight:600;text-decoration:none;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s}.btn:focus-visible{outline:3px solid var(--accent-soft);outline-offset:2px}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,var(--brand-1),var(--brand-2));color:#fff;box-shadow:0 6px 18px var(--btn-glow)}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 10px 28px var(--btn-glow)}.btn-outline{border-color:var(--accent);background:transparent;color:var(--accent-strong)}.btn-outline:hover{background:var(--accent-soft)}.btn-ghost{border-color:var(--border);background:var(--surface);color:var(--text)}.btn-ghost:hover{background:var(--surface-2)}.btn-disabled{border-color:var(--border);background:var(--surface-2);color:var(--muted);cursor:default}.btn-lg{padding:.95rem 1.6rem;font-size:1.05rem}.btn-sm{padding:.3rem .7rem;border-radius:8px;font-size:.8rem}@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;scroll-behavior:auto!important}}@media(max-width:480px){.container{padding:0 16px}}