:root{--bg:#f2f3f7;--bg-tint:#e5eefc;--surface:#fff;--text:#15171c;--muted:#5b6170;--line:#e1e4ec;--accent:#0a62d0;--accent-soft:#e3edfb;--on-accent:#fff;--warn:#b85300;--warn-soft:#fff1e3;--ink-line:#15171c;--radius:20px;--max:1080px;--header:64px;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#0f1115;--bg-tint:#121a28;--surface:#1a1d23;--text:#eef0f4;--muted:#a3a9b6;--line:#2a2e37;--accent:#5b9cf0;--accent-soft:#1a2a42;--on-accent:#0b1220;--warn:#ffa45c;--warn-soft:#3a2614;--ink-line:#eef0f4;color-scheme:dark}}*{box-sizing:border-box}html{scroll-padding-top:var(--header)}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;margin:0;font-family:system-ui,-apple-system,PingFang TC,Noto Sans TC,Microsoft JhengHei,sans-serif;line-height:1.65}a{color:var(--accent)}img{max-width:100%;height:auto;display:block}.wrap{width:min(var(--max), 100% - 32px);margin-inline:auto}.center{text-align:center}.skip-link{z-index:50;background:var(--surface);border-radius:8px;padding:8px 12px;position:absolute;top:8px;left:-999px}.skip-link:focus{left:8px}:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:6px}.site-header{z-index:20;background:color-mix(in srgb, var(--bg) 85%, transparent);-webkit-backdrop-filter:saturate(1.6)blur(14px);border-bottom:1px solid var(--line);position:sticky;top:0}.site-header .wrap{height:var(--header);align-items:center;gap:12px;display:flex}.brand{color:var(--text);align-items:center;gap:10px;font-size:1.1rem;font-weight:800;text-decoration:none;display:flex}.brand img{background:#f8f8f8;border-radius:8px;width:32px;height:32px}.site-nav{gap:2px;margin-left:auto;display:flex}.site-nav a{color:var(--muted);border-radius:999px;padding:8px 12px;font-size:.95rem;font-weight:600;text-decoration:none}.site-nav a:hover{color:var(--text);background:var(--surface)}.header-cta{margin-left:4px}@media (width<=640px){.site-nav a.optional{display:none}.header-cta{margin-left:auto}}.pill{border:2px solid var(--ink-line);background:var(--surface);color:var(--text);box-shadow:3px 3px 0 var(--ink-line);border-radius:999px;align-items:center;gap:6px;padding:8px 16px;font-size:.95rem;font-weight:700;text-decoration:none;transition:transform .15s,box-shadow .15s;display:inline-flex}.pill:hover{box-shadow:4px 4px 0 var(--ink-line);transform:translate(-1px,-1px)}.pill:active{box-shadow:1px 1px 0 var(--ink-line);transform:translate(2px,2px)}.pill-solid{background:var(--accent);color:var(--on-accent)}.pill-large{padding:14px 28px;font-size:1.15rem}.card{background:var(--surface);border:2px solid var(--ink-line);box-shadow:6px 6px 0 var(--ink-line);border-radius:28px;padding:clamp(28px,5vw,56px)}.eyebrow{letter-spacing:.14em;color:var(--accent);margin:0 0 12px;font-size:.8rem;font-weight:800}.big{letter-spacing:-.01em;margin:0 0 20px;font-size:clamp(2rem,5.4vw,3.6rem);line-height:1.15}.lead{color:var(--muted);max-width:36em;margin:0 0 28px;font-size:clamp(1.02rem,1.6vw,1.2rem)}.section{padding-block:clamp(72px,12vh,140px)}.phone{--bezel:9px;--corner:26px;width:100%;padding:var(--bezel);border-radius:calc(var(--corner) + var(--bezel));background:#111317;box-shadow:0 30px 60px #0a1e4640,inset 0 0 0 2px #2b2f37}@media (width<=640px){.phone{--bezel:6px;--corner:20px}}@media (prefers-color-scheme:dark){.phone{background:#22262e;box-shadow:0 30px 60px #00000080,0 0 0 1px #4a505c,0 0 80px #5b9cf02e}}.phone-screen{aspect-ratio:540/1200;border-radius:var(--corner);background:#f2f3f7;width:100%;position:relative;overflow:hidden}.phone-screen img{object-fit:cover;width:100%;height:100%;position:absolute;inset:0}.stage{height:calc(100svh - var(--header));position:relative;overflow:hidden}.pager{z-index:15;background:color-mix(in srgb, var(--surface) 88%, transparent);border:1px solid var(--line);font-variant-numeric:tabular-nums;color:var(--muted);border-radius:999px;align-items:baseline;gap:4px;padding:6px 12px;font-size:.8rem;display:flex;position:fixed;bottom:16px;right:16px}.pager-now{color:var(--text);font-weight:800}.pager-name{color:var(--accent);margin-left:6px;font-weight:700}@media (width<=640px){.pager-name{display:none}}.site-footer{border-top:1px solid var(--line);color:var(--muted);padding-block:40px 72px;font-size:.9rem}.site-footer .wrap{gap:16px;display:grid}.footer-links{flex-wrap:wrap;gap:8px 20px;display:flex}.footer-links a{color:var(--muted)}.footer-links a:hover{color:var(--text)}.disclaimer,.license{margin:0;font-size:.85rem}.license a{color:inherit}