:root{--navy:#17354e;--ink:#243746;--blue:#2c6b84;--sky:#dff3f5;--cream:#fffaf1;--gold:#e5a94a;--coral:#df806d;--line:#cddde0;--white:#fff;--shadow:0 18px 55px rgba(24,53,77,.12)}*{box-sizing:border-box}html{font-size:16px}body{margin:0;background:radial-gradient(circle at 85% 8%,#d8eff1 0,transparent 29%),linear-gradient(135deg,#f7fbfb,#fffaf1 72%);color:var(--ink);font-family:"Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif;min-height:100vh}.shell{width:min(980px,calc(100% - 32px));margin:auto;padding-bottom:60px}.topbar{height:86px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(23,53,78,.12)}.brand{display:flex;gap:12px;align-items:center;color:var(--navy)}.brand-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--navy);color:#ffd58a;font-size:24px}.brand b,.brand small{display:block}.brand small{font-size:.78rem;color:#66808f;margin-top:2px}.quiet,.secondary{border:1px solid var(--line);background:rgba(255,255,255,.62);color:var(--navy);border-radius:999px;padding:10px 18px;font-size:.92rem;cursor:pointer}.intro{text-align:center;padding:64px 16px 38px}.eyebrow{margin:0 0 10px;color:var(--coral);font-weight:700;letter-spacing:.18em;font-size:.8rem}.intro h1{font-family:"Noto Serif TC","Songti TC",serif;font-size:clamp(2.15rem,6vw,4.2rem);line-height:1.17;margin:0;color:var(--navy);font-weight:700}.intro h1 em{font-style:normal;color:var(--blue)}.intro>p:last-child{color:#667c89;margin:20px 0 0}.steps{display:grid;grid-template-columns:repeat(4,1fr);margin:0 auto 20px;max-width:760px;position:relative}.steps:before{content:"";position:absolute;top:18px;left:12.5%;right:12.5%;height:1px;background:var(--line)}.step{position:relative;background:none;border:0;color:#88a0aa;font-weight:600;display:flex;flex-direction:column;align-items:center;gap:8px;cursor:pointer}.step 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17px;font:inherit;color:var(--ink);outline:none;transition:.2s}textarea{min-height:105px;resize:vertical;line-height:1.7}input:focus,textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(44,107,132,.1)}fieldset{border:0;padding:0;margin:25px 0}.chips,.segmented,.lyric-tools{display:flex;flex-wrap:wrap;gap:10px}.chips button,.segmented button,.lyric-tools button{border:1px solid var(--line);background:white;color:#566f7b;border-radius:999px;padding:11px 17px;font-size:.95rem;cursor:pointer}.chips button.selected,.segmented button.selected{background:var(--navy);border-color:var(--navy);color:white}.privacy,.note,.demo-disclaimer{font-size:.88rem;line-height:1.6;background:#edf7f7;color:#55727e;border-radius:12px;padding:13px 15px;margin:22px 0}.primary{border:0;border-radius:999px;background:var(--navy);color:white;font-weight:700;font-size:1rem;padding:14px 24px;cursor:pointer;box-shadow:0 8px 22px rgba(23,53,78,.2)}.primary:hover{transform:translateY(-1px)}.panel>.primary.next{display:block;margin:28px 0 0 auto}.actions{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-top:30px}.choice-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:10px 34px}.choice-grid fieldset:first-child{grid-row:span 2}.cards{display:grid;gap:10px}.cards button{border:1px solid var(--line);background:white;text-align:left;border-radius:16px;padding:15px 18px;font:inherit;color:var(--navy);font-weight:700;cursor:pointer}.cards button small{display:block;color:#81939b;margin-top:4px;font-weight:400}.cards button.selected{border-color:var(--blue);background:#eef8f8;box-shadow:inset 4px 0 var(--blue)}.lyric-tools{margin:-10px 0 12px}.lyric-tools button{color:var(--blue)}.lyrics{min-height:390px;background:var(--cream);font-family:"Noto Serif TC",serif;font-size:1.05rem}.lyric-label{margin-top:10px}.player-wrap{text-align:center;padding:10px}.vinyl{width:150px;height:150px;margin:0 auto 26px;border-radius:50%;display:grid;place-items:center;background:repeating-radial-gradient(circle,#17354e 0 7px,#21445e 8px 11px);box-shadow:0 15px 30px rgba(23,53,78,.25)}.vinyl div{display:grid;place-items:center;width:56px;height:56px;background:#f1b969;border-radius:50%;font-size:24px;color:var(--navy)}.vinyl.playing{animation:spin 5s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.player-wrap h2{font-size:2rem}.player-wrap #songMeta{color:#78909a}.play{width:64px;height:64px;border-radius:50%;border:0;background:var(--navy);color:white;font-size:23px;cursor:pointer;margin:18px 0 4px}.timer{font-variant-numeric:tabular-nums;color:#78909a}.progress{height:6px;background:#e3ebec;border-radius:99px;overflow:hidden;max-width:480px;margin:auto}.progress i{display:block;height:100%;width:0;background:var(--gold)}.listen-tip{color:#78909a;font-size:.9rem}.panel details{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:17px 0;margin:22px 0}.panel summary{cursor:pointer;font-weight:700;color:var(--navy)}pre{white-space:pre-wrap;font-family:"Noto Serif TC",serif;line-height:1.8;background:var(--cream);padding:18px;border-radius:14px}.demo-disclaimer{background:#fff5df;color:#735d3f}.modal{position:fixed;inset:0;background:rgba(18,38,52,.72);display:none;place-items:center;padding:20px;z-index:9}.modal.show{display:grid}.modal>div{width:min(480px,100%);background:white;padding:38px;border-radius:24px;text-align:center;box-shadow:var(--shadow)}.heart{font-size:42px;color:var(--coral)}.modal p{line-height:1.8;color:#5d737e}footer{text-align:center;color:#71868f;font-size:.82rem;padding:0 20px 35px;line-height:1.6}@media(max-width:700px){.shell{width:min(100% - 20px,980px)}.topbar{height:72px}.intro{padding:44px 8px 28px}.steps{margin-bottom:14px}.step{font-size:.72rem}.panel{border-radius:22px;padding:24px 18px}.panel-head{gap:12px}.choice-grid{grid-template-columns:1fr}.choice-grid fieldset:first-child{grid-row:auto}.actions{flex-direction:column-reverse}.actions button{width:100%}.panel>.primary.next{width:100%}.lyrics{min-height:360px}.vinyl{width:125px;height:125px}.quiet{padding:8px 12px}}