:root{--paper: #fff8ec;--paper-2: #f6ecd9;--paper-3: #eadcc2;--ink: #3b2f2a;--ink-2: #6b5a50;--ink-3: #9b8a7e;--line: rgba(59, 47, 42, .12);--scrim: rgba(35, 28, 25, .45);--red: #e0564a;--red-deep: #b83f35;--jade: #3fa66b;--sky: #5b9bd5;--mango: #f2b134;--plum: #8e6bbf;--gold: #ffc233;--ok: #2f9e62;--ok-bg: #e6f6ec;--tip: #c77d12;--tip-bg: #fff3dc;--r-sm: 10px;--r-md: 16px;--r-lg: 22px;--r-pill: 999px;--shadow-1: 0 2px 0 rgba(59, 47, 42, .08), 0 6px 18px rgba(59, 47, 42, .14);--shadow-2: 0 3px 0 rgba(59, 47, 42, .1), 0 14px 40px rgba(35, 28, 25, .28);--ring: 0 0 0 3px rgba(242, 177, 52, .45);--font-zh: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;--font-ui: "Nunito", "Noto Sans TC", system-ui, sans-serif;--fs-xs: 11px;--fs-sm: 13px;--fs-md: 15px;--fs-lg: 19px;--fs-xl: 26px;--gutter: 14px;--hud-gap: 10px;--dock-h: 64px}@media (max-width: 720px){:root{--gutter: 10px;--hud-gap: 8px;--fs-md: 14px;--fs-lg: 17px;--dock-h: 48px}}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font-ui);color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased}h1,h2,h3{font-family:var(--font-zh)}a{color:inherit;text-decoration:none}small{font-size:.7em;color:var(--ink-3);font-weight:600;font-family:var(--font-ui)}.muted{color:var(--ink-2)}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:999px;font-weight:800;font-family:var(--font-zh);background:var(--paper-2);box-shadow:inset 0 -3px #3b2f2a1f;transition:transform .12s,box-shadow .12s}.btn:hover{transform:translateY(-2px)}.btn-primary{background:var(--red);color:#fff;box-shadow:inset 0 -3px 0 var(--red-deep),0 8px 20px #e0564a4d}.btn-primary small{color:#fffc}.btn-ghost{background:transparent;box-shadow:inset 0 0 0 2px var(--paper-3)}.btn-big{padding:14px 24px;font-size:18px}.nav{position:sticky;top:0;z-index:10;display:flex;justify-content:space-between;align-items:center;padding:12px 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p.me{align-self:flex-end;background:#ffe9e4;border-radius:18px 18px 4px}.chat-demo p.me b{color:var(--red)}.final-cta{text-align:center}.final-cta h2{font-weight:900}.foot{text-align:center;padding:30px;color:var(--ink-3);font-size:13px}@keyframes float{50%{transform:translateY(-8px)}}@media (max-width: 900px){.hero,.voice{grid-template-columns:1fr}.nav nav a:not(.btn){display:none}.hero-card-a{left:8px}.hero-card-b{right:8px}.voice h2{text-align:center}}