:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f2efe7;--panel:#fffbf4e0;--panel-strong:#fffaf0;--line:#7057382e;--text:#2d261f;--muted:#77685b;--accent:#ee6c4d;--accent-strong:#d94f2d;--shadow:0 18px 45px #4d35191f;--checker-a:#a195861f;--checker-b:#ffffffbf}*{box-sizing:border-box}body{color:var(--text);background:radial-gradient(circle at 0 0,#f49a6b38,#0000 28%),radial-gradient(circle at 100% 100%,#ffd60a2e,#0000 24%),linear-gradient(160deg,#f7f2e8 0%,#ede3d2 100%);min-height:100vh;margin:0;font-family:Hiragino Sans,Yu Gothic,sans-serif}button,input,select{font:inherit}.app-shell{grid-template-columns:minmax(300px,360px) minmax(0,1fr);grid-template-areas:"tuning stage""tuning results";gap:20px;padding:20px;display:grid}.panel{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-radius:28px}.brand h1,.stage-head h2,.status-card h2{letter-spacing:.01em;margin:0;font-family:Avenir Next,Hiragino Kaku Gothic ProN,sans-serif}.brand h1{letter-spacing:.12em;color:#1f1712;font-size:1.55rem;line-height:1.05}.brand{gap:10px;display:grid}.brand p{color:var(--muted);margin:0;font-size:.94rem;line-height:1.5}.eyebrow{color:var(--accent-strong);text-transform:uppercase;letter-spacing:.08em;margin:0 0 8px;font-size:.78rem;font-weight:700}.hint,.status-card p,.placeholder,small{color:var(--muted)}.top-panel{grid-area:top;align-content:start;gap:18px;min-width:0;padding:28px;display:grid}.top-panel.is-empty{display:none}.file-drop{cursor:pointer;background:linear-gradient(#ffffffc7,#fff6ebe6);border:2px dashed #d94f2d47;border-radius:20px;gap:4px;padding:20px;display:grid}.file-drop.dragging{border-color:var(--accent-strong);transform:translateY(-1px)}.file-drop input{display:none}.control-group{gap:10px;min-width:0;display:grid}.tuning-panel,#topContent,#tuningContent{gap:18px;min-width:0;display:grid}.control-head{justify-content:space-between;align-items:center;gap:12px;display:flex}input[type=range]{width:100%;accent-color:var(--accent)}.check-row{color:var(--text);align-items:center;gap:10px;display:flex}.check-row input[type=checkbox]{width:18px;height:18px;accent-color:var(--accent);margin:0}select,button{border:1px solid var(--line);width:100%;color:var(--text);background:#fffdf8;border-radius:14px;padding:12px 14px}button{cursor:pointer;transition:transform .16s,background .16s,border-color .16s}button:hover:enabled{transform:translateY(-1px)}button:disabled{opacity:.45;cursor:not-allowed}button.primary{color:#fff;background:linear-gradient(#ff845f 0%,#e7603b 100%);border-color:#0000}.secondary-actions button{background:#ffffffd1}.actions{grid-template-columns:1fr 1fr;gap:10px;display:grid}.status-card{background:#ffffff80;border:1px solid #7057381a;border-radius:20px;min-width:0;padding:18px}.status-card ol{margin:10px 0 14px;padding-left:20px}.tuning-card,.stage,.result-card,.results-panel{padding:20px}.tuning-card{grid-area:tuning;align-content:start;gap:18px;min-width:0;padding:28px 30px;display:grid}.stage{grid-area:stage;min-width:0}.results-panel{grid-area:results;min-width:0}.stage-head{justify-content:space-between;align-items:end;gap:16px;margin-bottom:16px;display:flex}.stage-head.compact{margin-bottom:12px}.canvas-wrap{background-color:#ffffff8c;border:1px solid #7057381f;border-radius:24px;min-height:280px;position:relative;overflow:hidden}.canvas-wrap.solid-preview{background-image:none}.checkerboard{background-image:linear-gradient(45deg, var(--checker-a) 25%, transparent 25%), linear-gradient(-45deg, var(--checker-a) 25%, transparent 25%), linear-gradient(45deg, transparent 75%, var(--checker-a) 75%), linear-gradient(-45deg, transparent 75%, var(--checker-a) 75%);background-position:0 0,0 12px,12px -12px,-12px 0;background-size:24px 24px;background-color:var(--checker-b)}canvas{width:100%;height:auto;display:block}.placeholder{text-align:center;place-items:center;padding:24px;display:grid;position:absolute;inset:0}.result-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;display:grid}.preview-toolbar{gap:8px;margin-top:12px;display:grid}.preview-actions{margin-top:12px}@media (width<=1100px){.app-shell{grid-template-columns:1fr;grid-template-areas:"top""stage""tuning""results"}}@media (width<=760px){.result-grid,.actions,.stage-head{grid-template-columns:1fr}.stage-head{align-items:start}.app-shell{padding:14px}.top-panel,.tuning-card,.stage,.results-panel{padding:16px}.brand h1{font-size:1.3rem}.canvas-wrap{min-height:220px}}
