:root{color-scheme:dark;--bg:#100e0c;--panel:#1b1713;--gold:#dcc08b;--muted:#a69b88;--line:#3b3328;--ink:#f3eee4}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 20% 20%,#282016 0,transparent 50%),var(--bg);color:var(--ink);font-family:system-ui,-apple-system,"PingFang SC",sans-serif}button,input,a{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer;font:inherit}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--gold);outline-offset:4px}[hidden]{display:none!important}.custom-header{max-width:1480px;margin:auto;padding:26px 40px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}.custom-header a{padding:10px 0}.trial{font-size:10px;letter-spacing:.1em;border:1px solid #6c5532;color:var(--gold);border-radius:30px;padding:8px 12px}.atelier{max-width:1480px;margin:auto;padding:24px 40px 50px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(410px,.9fr);gap:56px}.preview-column{align-self:start;position:sticky;top:24px}.eyebrow{font-size:10px;letter-spacing:.28em;color:#b89c6b}h1{font:400 clamp(27px,3vw,43px)/1.5 "Songti SC",STSong,serif;letter-spacing:.1em;margin:16px 0 6px}.lead{color:var(--muted);font-size:14px;letter-spacing:.13em;margin:0 0 28px}.preview-frame{border:1px solid #584530;background:#f7f0de;border-radius:18px;overflow:hidden;box-shadow:0 20px 60px #0004}iframe{width:100%;height:clamp(260px,31vw,450px);display:block;border:0;background:#f7f0de}.preview-caption{display:flex;justify-content:space-between;gap:12px;background:#1c1814;padding:17px 18px;font-size:12px;color:var(--gold)}#playHint{font-size:10px;color:var(--muted)}.features{display:flex;justify-content:space-around;margin:25px 0 36px;color:var(--muted);font-size:11px;letter-spacing:.04em}.purchase-note{border-top:1px solid var(--line);padding:24px 0;color:var(--muted);font-size:12px;line-height:1.8}.purchase-note b{color:var(--ink);font-weight:400}.purchase-note p{margin:5px 0}.text-button{border:0;background:none;color:var(--muted);padding:12px 0;font-size:12px;min-height:44px}.text-button:hover{color:var(--gold)}.tabs{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:2;background:var(--bg);padding:8px 0}.tabs button{color:var(--muted);background:transparent;border:0;border-bottom:2px solid transparent;padding:15px 3px;font-size:13px;white-space:nowrap}.tabs button.active{color:var(--gold);border-color:var(--gold)}.option-content{min-height:575px;padding:25px 0}.section-title{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:20px}.section-title h2{font:400 18px/1.5 "Songti SC",serif;margin:0}.section-title>span{font-size:9px;letter-spacing:.08em;color:#7b6b53;white-space:nowrap}h3{font-weight:400;font-size:13px;margin:26px 0 13px}.palette-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.palette{border:1px solid var(--line);border-radius:9px;padding:8px;background:#1b1713;color:var(--muted);text-align:left;min-height:78px}.palette span{display:block;height:43px;border-radius:4px;margin-bottom:8px;border:1px solid #ffffff16}.palette b{font-size:11px;font-weight:400}.palette.selected,.shape-card.selected,.sound-card.selected{border-color:var(--gold);color:var(--gold);box-shadow:0 0 0 1px #dcc08b33}.color-edit{border-bottom:1px solid var(--line);padding-bottom:20px}.color-edit p,.subtle{color:var(--muted);font-size:11px;line-height:1.8;margin:0 0 15px}.color-inputs{display:flex;gap:12px}.color-inputs label{display:flex;align-items:center;gap:10px;background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:6px 10px;font-size:11px;color:var(--muted)}input[type=color]{width:34px;height:32px;border:0;background:none;padding:0;cursor:pointer}.segmented{display:flex;gap:8px;flex-wrap:wrap}.segmented button{padding:10px 14px;border:1px solid var(--line);border-radius:6px;color:var(--muted);background:var(--panel);font-size:12px;min-height:44px}.segmented button.selected{border-color:var(--gold);color:var(--gold)}.shape-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.shape-card{padding:16px 12px;background:var(--panel);border:1px solid var(--line);border-radius:9px;color:var(--muted);text-align:left}.shape-card svg{width:100%;height:50px;display:block;margin:0 0 14px}.shape-card b{font-size:13px;font-weight:400}.shape-card small{display:block;font-size:10px;line-height:1.6;margin-top:7px;color:var(--muted)}.source-link{display:inline-block;font-size:11px;color:var(--muted);margin:20px 0}.sound-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.sound-card{background:var(--panel);border:1px solid var(--line);border-radius:9px;min-height:95px;padding:16px;color:var(--ink);text-align:left}.sound-card b{font-size:14px;font-weight:400}.sound-card small{display:block;font-size:10px;color:var(--muted);line-height:1.6;margin-top:9px}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;min-height:46px;border-radius:8px;padding:12px 19px;font-size:13px;border:1px solid var(--gold)}.primary{background:var(--gold);color:#20190f}.secondary{background:var(--panel);color:var(--gold)}#audition{margin-top:20px}.apply-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:20px}.name-label{display:block;font-size:12px;color:var(--muted);margin:20px 0 12px}.save-row{display:flex;gap:10px}input[type=text],#designName{background:var(--panel);border:1px solid var(--line);color:var(--ink);font:inherit;padding:10px 12px;min-width:0;flex:1;border-radius:6px}.save-row+.subtle{margin:12px 0 22px}.saved-grid{display:grid;gap:10px}.saved-card{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:8px;padding:12px;background:var(--panel)}.saved-card>button{background:transparent;color:var(--gold);border:0;min-height:44px}.saved-card .load{flex:1;text-align:left;font-size:13px}.saved-card .delete{font-size:11px;color:var(--muted)}.mini-swatch{width:48px;height:28px;border-radius:4px;flex-shrink:0}#status{color:var(--gold);font-size:12px;min-height:36px;padding-top:12px}dialog{background:var(--panel);color:var(--ink);border:1px solid var(--line);border-radius:16px;max-width:420px;padding:30px;line-height:1.9}dialog::backdrop{background:#000a;backdrop-filter:blur(5px)}dialog h2{font:400 25px "Songti SC",serif}dialog p{font-size:13px;color:var(--muted)}@media(max-width:1000px){.atelier{gap:28px;padding:20px 24px;grid-template-columns:minmax(0,1fr) minmax(350px,1fr)}.custom-header{padding:18px 24px}.preview-caption{flex-direction:column;gap:6px}.color-inputs{gap:6px}.color-inputs label{padding:5px 7px;gap:5px}}@media(max-width:760px){.atelier{display:block;padding:12px 18px 30px}.custom-header{padding:12px 18px}.preview-column{position:static}.eyebrow{font-size:9px}h1{font-size:29px;margin-top:8px}.lead{font-size:12px;margin-bottom:16px}iframe{height:230px}.preview-caption{flex-direction:row;padding:12px;font-size:10px}#playHint{font-size:9px}.features{margin:15px 0 20px}.purchase-note{padding:14px 0;margin-bottom:12px}.purchase-note p{display:inline;margin-left:4px}.purchase-note .text-button{display:block;padding:4px 0}.tabs{top:0;padding-top:10px}.option-content{min-height:0;padding:20px 0}.palette-grid{gap:8px}.palette span{height:38px}.apply-bar{position:sticky;bottom:0;z-index:3;background:var(--bg);padding:13px 0 calc(13px + env(safe-area-inset-bottom));}.section-title h2{font-size:17px}.preview-column .purchase-note{font-size:11px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

.embedded .trial{display:none}
/* v6.0：侧栏里也要能边选边看见整张琴，并且能拉着听。
   预览钉在顶上，下面的选项照常滚动；标题、卖点、购买说明在侧栏里收起来。 */
.embedded .preview-column{display:block;position:sticky;top:0;z-index:5;margin:0 -18px;
  padding:0 18px 10px;background:var(--bg)}
.embedded .preview-column .eyebrow,.embedded .preview-column h1,
.embedded .preview-column .lead,.embedded .features,
.embedded .preview-column .purchase-note{display:none}
.embedded .preview-frame{border-radius:12px}
.embedded iframe{height:clamp(140px,24vh,220px)}
.embedded .preview-caption{flex-direction:row;padding:9px 12px;font-size:10.5px}
.embedded .tabs{top:0}.embedded .atelier{display:block;padding:0 18px 20px}.embedded .custom-header{padding:6px 18px}.embedded .option-content{min-height:0}.embedded .tabs{top:0}.embedded .apply-bar{position:sticky;bottom:0;background:var(--bg)}

/* ── 体验版（升级页「体验」进来的那一屏）──
   只影响 body.demo，正式的专属古琴面板一个规则都没改。 */
.demo .preview-frame{position:relative}
.demo .demo-veil{position:absolute;inset:0;display:flex;align-items:flex-end;justify-content:center;
  padding:0 0 14px;background:linear-gradient(180deg,transparent 60%,rgba(12,10,8,.55));
  color:#f0e2c2;font-size:11.5px;letter-spacing:.08em;cursor:not-allowed}
.demo .locked{position:relative;opacity:.42;cursor:not-allowed}
.demo .locked::after{content:"✦";position:absolute;top:6px;right:8px;font-size:10px;color:var(--gold);opacity:.9}
.demo .tabs button.locked::after{top:10px;right:2px}
.demo .locked-block{position:relative;opacity:.45;pointer-events:none}
.demo .locked-block::after{content:"✦ PRO";position:absolute;top:0;right:0;font-size:10px;
  letter-spacing:.12em;color:var(--gold);opacity:.9}
.demo #audition.locked{opacity:.45}

/* 体验版是整屏一页：让它整页滚，别把选项挤没了（徽位、琴弦都在下面） */
body.demo .atelier{display:block;height:auto;min-height:100vh;min-height:100dvh;overflow-y:auto;-webkit-overflow-scrolling:touch}
body.demo .preview-column{position:sticky;top:0;z-index:5;background:var(--bg);padding-bottom:10px}
body.demo .preview-frame iframe{height:clamp(170px,30vh,320px)}
body.demo .options-column{height:auto;max-width:720px;margin:0 auto;padding-bottom:40px}
body.demo .option-content{height:auto;max-height:none;overflow:visible}
@media(orientation:portrait){
  body.demo .preview-frame iframe{height:clamp(150px,26vh,280px)}
}