:root{--bg:#f6f6f4;--paper:#fff;--ink:#191919;--muted:#787774;--line:#e7e7e4;--accent:#2383e2;--danger:#d44c47;--radius:14px;font-family:Inter,"Noto Sans JP",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg)}
*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg)}button,select,textarea{font:inherit}.topbar{height:74px;padding:0 clamp(18px,4vw,52px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(246,246,244,.94);position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}h1{font-size:20px;line-height:1;margin:5px 0 0;letter-spacing:-.02em}.eyebrow{font-size:9px;font-weight:800;letter-spacing:.18em;color:var(--muted)}.header-actions{display:flex;gap:8px}.quiet{border:1px solid var(--line);background:transparent;border-radius:8px;padding:8px 12px;font-weight:650;font-size:12px;color:#50504d}.workspace{max-width:1480px;margin:auto;padding:28px clamp(16px,3vw,42px) 50px;display:grid;grid-template-columns:minmax(340px,.83fr) minmax(520px,1.17fr);gap:20px;align-items:start}.editor-panel,.output-panel{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 1px 2px rgba(0,0,0,.025)}.editor-panel{position:sticky;top:102px}.panel-head{height:62px;padding:0 20px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.panel-head>div{display:flex;align-items:center;gap:10px}.panel-head h2{font-size:14px;margin:0}.step{display:grid;place-items:center;width:24px;height:24px;border:1px solid var(--line);border-radius:50%;font:700 9px ui-monospace,monospace;color:var(--muted)}.status{font-size:11px;color:var(--muted)}textarea{display:block;width:100%;height:460px;padding:22px;border:0;resize:vertical;outline:0;font:14px/1.75 ui-monospace,SFMono-Regular,Menlo,monospace;color:#262624;background:#fdfdfc;tab-size:2}textarea:focus{box-shadow:inset 3px 0 var(--accent)}.syntax{border-top:1px solid var(--line);padding:14px 20px;color:var(--muted);font-size:12px;line-height:1.7}.syntax summary{cursor:pointer;font-weight:700;color:#555}.syntax p{margin:10px 0 0}.syntax code{background:#f1f1ef;border-radius:4px;padding:2px 5px;color:#37352f}.messages{padding:0 20px}.messages:not(:empty){padding-top:13px;padding-bottom:13px;border-top:1px solid var(--line)}.message{font-size:11px;line-height:1.5;color:var(--danger);margin:3px 0}.date-select,.toolbar label{display:flex;align-items:center;gap:8px;font-size:11px;font-weight:650;color:var(--muted)}select{border:1px solid var(--line);border-radius:7px;padding:7px 28px 7px 9px;background:#fff;color:var(--ink);outline:none}.toolbar{padding:12px 20px;display:flex;justify-content:flex-end;gap:20px;border-bottom:1px solid var(--line)}.check input{accent-color:var(--accent)}.preview-wrap{padding:22px;background:#ededeb;display:grid;place-items:center;min-height:420px}#preview{display:block;max-width:100%;height:auto;background:#fff;box-shadow:0 8px 28px rgba(0,0,0,.12)}.exports{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--line)}.exports article{min-height:78px;padding:15px 16px;display:flex;align-items:center;justify-content:space-between;gap:14px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.exports article:nth-child(even){border-right:0}.exports article:last-child{border-bottom:0}.exports strong{display:block;font-size:13px}.exports small{display:block;margin-top:4px;font-size:10px;color:var(--muted)}.exports button{border:0;border-radius:7px;background:#191919;color:#fff;padding:9px 13px;font-size:11px;font-weight:750;cursor:pointer}.exports button:hover{background:#333}.exports button:disabled{opacity:.5;cursor:wait}.recommended{box-shadow:inset 3px 0 var(--accent)}.toast{position:fixed;left:50%;bottom:25px;transform:translate(-50%,20px);padding:10px 15px;border-radius:8px;background:#202020;color:white;font-size:12px;opacity:0;pointer-events:none;transition:.2s;z-index:20}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:900px){.workspace{grid-template-columns:1fr}.editor-panel{position:static}textarea{height:360px}.topbar{height:68px}.exports{grid-template-columns:1fr}.exports article{border-right:0}.toolbar{justify-content:flex-start;flex-wrap:wrap}.preview-wrap{padding:12px}}
@media(max-width:520px){.topbar{padding:0 14px}.quiet{padding:7px 9px}.workspace{padding:14px 10px 36px;gap:12px}.panel-head{padding:0 14px}.output-head{height:auto;min-height:62px;gap:10px;flex-wrap:wrap;padding-block:12px}textarea{padding:16px;font-size:13px}.preview-wrap{min-height:280px}}

/* Modern theme and output-aware preview */
:root{color-scheme:light;--bg:#f4f5f7;--paper:rgba(255,255,255,.92);--paper-solid:#fff;--ink:#15171a;--muted:#717780;--line:#e2e5e9;--soft:#f7f8fa;--preview:#e7e9ed;--accent:#5b5ce2;--accent-soft:#eeeeff;--shadow:0 14px 45px rgba(23,28,38,.06);--radius:18px}
[data-theme=dark]{color-scheme:dark;--bg:#0d0f12;--paper:rgba(22,25,30,.94);--paper-solid:#171a1f;--ink:#f2f3f5;--muted:#9299a4;--line:#292d34;--soft:#1c2026;--preview:#0a0c0f;--accent:#8b8cff;--accent-soft:#292a4d;--shadow:0 18px 55px rgba(0,0,0,.28)}
html{transition:background .25s,color .25s}body{color:var(--ink);background:radial-gradient(circle at 90% -10%,color-mix(in srgb,var(--accent) 9%,transparent),transparent 32%),var(--bg)}.topbar{height:76px;background:color-mix(in srgb,var(--bg) 84%,transparent);backdrop-filter:blur(18px)}.eyebrow{color:var(--accent)}.quiet,.theme-toggle{border:1px solid var(--line);background:var(--paper);border-radius:10px;padding:8px 12px;font-weight:650;font-size:12px;color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.03);cursor:pointer}.theme-toggle{display:flex;align-items:center;gap:7px}.theme-toggle span:first-child{font-size:15px}.workspace{gap:22px}.editor-panel,.output-panel{box-shadow:var(--shadow);backdrop-filter:blur(12px)}.step{background:var(--accent-soft);border-radius:8px;color:var(--accent)}textarea{color:var(--ink);background:var(--paper-solid)}.syntax summary{color:var(--muted)}.syntax code{background:var(--soft);color:var(--ink)}select{background:var(--paper-solid)}
.preview-meta{height:42px;padding:0 20px;display:flex;align-items:center;justify-content:space-between;background:var(--soft);border-bottom:1px solid var(--line);font-size:10px;color:var(--muted);letter-spacing:.09em;font-weight:800}.preview-meta>div{display:flex;align-items:center;gap:7px}.preview-meta strong{color:var(--ink);font-size:11px;letter-spacing:0}.live-dot{width:6px;height:6px;border-radius:50%;background:#35b77d;box-shadow:0 0 0 3px color-mix(in srgb,#35b77d 14%,transparent)}.preview-wrap{padding:26px;background:var(--preview);display:flex;align-items:center;justify-content:center;min-height:470px;max-height:690px;overflow:auto}.preview-wrap.landscape{min-height:390px}.preview-wrap.timeline{align-items:flex-start}#preview{max-height:620px;width:auto;height:auto;box-shadow:0 12px 38px rgba(0,0,0,.22)}.preview-wrap.timeline #preview{max-height:none;width:min(100%,390px)}
.exports article{position:relative;min-height:88px;cursor:pointer;transition:background .16s,box-shadow .16s}.exports article:hover{background:var(--soft)}.exports article.active{background:var(--accent-soft);box-shadow:inset 3px 0 var(--accent)}.exports article:focus-visible{outline:2px solid var(--accent);outline-offset:-3px}.format{display:inline-block;margin-bottom:5px;padding:2px 5px;border-radius:4px;background:var(--soft);color:var(--muted);font:800 8px ui-monospace,monospace;letter-spacing:.08em}.active .format{color:var(--accent)}.exports button{border-radius:8px;background:var(--ink);color:var(--paper-solid)}.exports button:hover{filter:brightness(.86)}.recommended{box-shadow:none}.recommended:not(.active)::after{content:"推奨";position:absolute;right:12px;top:8px;font-size:8px;color:var(--accent);font-weight:800}
@media(max-width:520px){.theme-toggle span:last-child{display:none}.preview-wrap{max-height:540px}}

.toolbar .toggle-control{display:flex;align-items:center;gap:9px;cursor:pointer;user-select:none;color:var(--muted)}.toggle-control input{position:absolute;inline-size:1px;block-size:1px;opacity:0;pointer-events:none}.toggle-control i{position:relative;display:block;width:34px;height:19px;border-radius:999px;background:color-mix(in srgb,var(--muted) 28%,var(--soft));border:1px solid var(--line);transition:background .2s,border-color .2s}.toggle-control i::after{content:"";position:absolute;left:2px;top:2px;width:13px;height:13px;border-radius:50%;background:var(--paper-solid);box-shadow:0 1px 3px rgba(0,0,0,.22);transition:transform .2s}.toggle-control input:checked+i{background:var(--accent);border-color:var(--accent)}.toggle-control input:checked+i::after{transform:translateX(15px);background:#fff}.toggle-control input:focus-visible+i{outline:2px solid color-mix(in srgb,var(--accent) 55%,transparent);outline-offset:2px}