:root { color-scheme: light; --ink:#10295b; --blue:#245be8; --line:#dbe5f3; --muted:#526987; }
* { box-sizing:border-box; }
body { margin:0; color:var(--ink); background:#f7fbff; font-family:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif; }
button,a { -webkit-tap-highlight-color:transparent; }
button { font:inherit; cursor:pointer; border:1px solid var(--line); background:white; color:var(--ink); min-height:44px; border-radius:8px; padding:10px 15px; }
button:hover:not(:disabled) { border-color:var(--blue); background:#eef5ff; }
button:disabled { cursor:default; color:#7f8fa5; background:#edf1f7; }
button:focus-visible,a:focus-visible,model-viewer:focus-visible { outline:3px solid #4fc9bf; outline-offset:3px; }
a { color:#174bb8; }
.site-header { padding:18px max(20px,calc((100vw - 1200px)/2)); background:white; border-bottom:1px solid var(--line); display:flex; justify-content:space-between; gap:20px; align-items:center; }
.brand img { display:block; width:215px; height:auto; }
.site-header nav { display:flex; gap:23px; flex-wrap:wrap; }
.site-header nav a { font-size:14px; text-decoration:none; font-weight:600; }
main { max-width:1240px; padding:40px 20px 24px; margin:auto; }
.heading { margin-bottom:28px; }
.eyebrow { font-size:11px; letter-spacing:.15em; font-weight:700; color:#587697; margin:0 0 10px; }
h1 { font-size:clamp(26px,4vw,40px); margin:0 0 12px; letter-spacing:-.035em; }
.heading>p:last-child { color:var(--muted); font-size:15px; margin:0; }
.series-tabs { display:grid; grid-template-columns:repeat(3,1fr); max-width:600px; gap:10px; margin-bottom:22px; }
.series-tabs button { text-align:left; font-weight:700; padding:12px 18px; }
.series-tabs small { display:block; margin-top:5px; font-size:11px; font-weight:400; color:var(--muted); }
.series-tabs [aria-selected=true] { background:#e9f0ff; border-color:var(--blue); color:#1545b3; }
.product-panel { display:grid; grid-template-columns:minmax(0,1fr) 290px; gap:30px; align-items:start; }
.display-column { min-width:0; }
.stage { position:relative; height:500px; background:radial-gradient(ellipse at 50% 40%,#fff 25%,#eaf1f9 95%); border:1px solid var(--line); border-radius:14px; overflow:hidden; }
#poster { width:100%; height:100%; object-fit:contain; padding:28px; position:absolute; inset:0; }
#model-container,model-viewer { position:absolute; inset:0; width:100%; height:100%; }
model-viewer { opacity:0; --poster-color:transparent; }
.stage.ready model-viewer { opacity:1; }
.stage.ready #poster { visibility:hidden; }
.launch-panel { position:absolute; bottom:25px; left:16px; right:16px; display:grid; justify-items:center; gap:9px; }
.launch-panel button { background:var(--blue); color:white; border-color:var(--blue); min-width:200px; box-shadow:0 6px 20px #173c7a25; }
.launch-panel button:disabled { background:#64758b; border-color:#64758b; }
.launch-panel span { font-size:11px; color:#40587c; background:#ffffffdd; border-radius:4px; padding:4px 9px; }
.loading-panel,.failure-panel { position:absolute; left:20px; right:20px; bottom:20px; border-radius:10px; padding:16px; display:grid; gap:10px; background:#ffffffed; border:1px solid var(--line); text-align:center; }
.loading-panel span,.failure-panel p { font-size:13px; margin:0; }
progress { width:100%; height:12px; accent-color:var(--blue); }
.loading-panel button,.failure-panel button { justify-self:center; min-height:38px; padding:7px 14px; }
.toolbar { display:flex; flex-wrap:wrap; gap:7px; margin:12px 0; }
.toolbar button { font-size:12px; padding:8px 12px; }
.toolbar [aria-pressed=true] { color:#1545b3; background:#e9f0ff; border-color:var(--blue); }
#status { font-size:13px; margin:14px 0 8px; line-height:1.6; }
.instructions { color:var(--muted); font-size:11px; line-height:1.8; margin:0; }
.product-copy { padding:18px 0; }
h2 { font-size:27px; margin:0 0 14px; }
.product-copy>p { font-size:14px; line-height:1.85; color:var(--muted); }
.appearance-note { border-left:3px solid #bd851c; background:#fff6e6; border-radius:0 8px 8px 0; padding:16px; margin:24px 0; }
.appearance-note b { font-size:13px; color:#775010; }
.appearance-note p { font-size:12px; line-height:1.8; margin:10px 0 0; color:#735d3b; }
.product-link { font-size:13px; text-decoration:none; font-weight:600; line-height:1.8; }
footer { border-top:1px solid var(--line); margin-top:40px; padding-top:22px; display:flex; gap:22px; flex-wrap:wrap; font-size:11px; color:var(--muted); }
[hidden] { display:none !important; }
@media(max-width:800px) { .product-panel { grid-template-columns:minmax(0,1fr); gap:8px; } .stage { height:440px; } .product-copy { padding-top:20px; } .appearance-note { margin:18px 0; } }
@media(max-width:480px) { .site-header { padding:16px; flex-wrap:wrap; gap:14px; } .brand img { width:185px; } .site-header nav { gap:23px; } main { padding:28px 14px 20px; } .heading { margin-bottom:23px; } .series-tabs { gap:7px; } .series-tabs button { padding:12px 10px; font-size:14px; } .series-tabs small { font-size:10px; } .stage { height:360px; } #poster { padding:14px; } .toolbar { gap:6px; } .toolbar button { flex-grow:1; font-size:11px; padding:8px 10px; } footer { margin-top:28px; gap:16px; } }
@media(prefers-reduced-motion:reduce) { * { scroll-behavior:auto !important; } }