:root{--bg:#1c1b18;--bg-frame:#232220;--surface:#2a2926;--surface-2:#32302c;--surface-3:#3b3934;--board:#e9e4d9;--board-line:#b7ad97;--board-star:#9a9082;--stone-black:#161513;--stone-black-edge:#000;--stone-white:#f4f0e6;--stone-white-edge:#cdc6b6;--stone-red:#b04a3f;--text:#f4f2ec;--text-dim:#9a948a;--text-faint:#6f6a62;--line:#3d3b36;--line-soft:#34322e;--accent:#e9e4d9;--accent-contrast:#1c1b18;--danger:#b04a3f;--ok:#8a9a7b;--radius:14px;--radius-sm:10px;--radius-lg:22px;--app-max:460px}*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}body,html{height:100%}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Kaku Gothic ProN,Noto Sans JP,Meiryo,sans-serif;-webkit-font-smoothing:antialiased;display:flex;justify-content:center;background-image:radial-gradient(120% 80% at 50% -10%,#26241f 0,#1c1b18 60%)}button{cursor:pointer;border:none;background:none;color:inherit}button,input{font-family:inherit}.app-frame{width:100%;max-width:var(--app-max);min-height:100vh;min-height:100dvh;background:var(--bg-frame);position:relative;display:flex;flex-direction:column;box-shadow:0 0 60px rgba(0,0,0,.5);overflow:hidden}.screen{flex:1 1;min-height:0;display:flex;flex-direction:column;padding:22px 20px 28px;overflow-y:auto;-webkit-overflow-scrolling:touch;animation:fade-in .28s ease}@keyframes fade-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.screen-scroll{flex:1 1;overflow-y:auto}.topbar{display:flex;align-items:center;gap:12px;margin-bottom:22px;min-height:36px}.topbar h1{font-size:18px;font-weight:700;letter-spacing:.04em}.icon-btn{width:38px;height:38px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:var(--surface);border:1px solid var(--line);color:var(--text);transition:background .15s,transform .1s;flex-shrink:0}.icon-btn:hover{background:var(--surface-2)}.icon-btn:active{transform:scale(.94)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:15px 18px;border-radius:var(--radius);background:var(--surface-2);border:1px solid var(--line);color:var(--text);font-size:15px;font-weight:600;letter-spacing:.02em;transition:background .15s,transform .08s,border-color .15s}.btn:hover{background:var(--surface-3)}.btn:active{transform:scale(.985)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-primary{background:var(--accent);color:var(--accent-contrast);border-color:var(--accent);font-weight:700}.btn-primary:hover{background:#fffdf7}.btn-ghost{background:transparent}.btn-ghost:hover{background:var(--surface)}.btn-danger{color:#e3a59d;border-color:#543430}.btn-danger:hover{background:#2c1f1d}.btn-row{display:flex;gap:12px}.btn-row .btn{width:auto;flex:1 1}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px}.list{display:flex;flex-direction:column;gap:12px}.muted{color:var(--text-dim)}.faint{color:var(--text-faint)}.center{text-align:center}.eyebrow{font-size:11px;letter-spacing:.22em;font-family:ui-monospace,SF Mono,Menlo,monospace}.eyebrow,.section-title{text-transform:uppercase;color:var(--text-dim)}.section-title{font-size:13px;font-weight:700;letter-spacing:.08em;margin-bottom:12px}.field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}.field label{font-size:12px;color:var(--text-dim);letter-spacing:.04em}.input{width:100%;padding:13px 14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);color:var(--text);font-size:15px;transition:border-color .15s}.input:focus{outline:none;border-color:var(--text-dim)}.input::placeholder{color:var(--text-faint)}.slider{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:4px;border-radius:2px;background:var(--surface-3);outline:none}.slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:var(--accent);border:2px solid var(--bg-frame);cursor:pointer}.slider::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--accent);border:2px solid var(--bg-frame);cursor:pointer}.badge{display:inline-flex;align-items:center;gap:5px;font-size:11px;letter-spacing:.05em;padding:3px 9px;border-radius:999px;background:var(--surface-2);border:1px solid var(--line);color:var(--text-dim)}.divider{height:1px;background:var(--line);margin:18px 0}.spacer{flex:1 1}.spinner{width:44px;height:44px;border-radius:50%;border:3px solid var(--surface-3);border-top-color:var(--accent);animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.screen-scroll::-webkit-scrollbar,.screen::-webkit-scrollbar{width:6px}.screen-scroll::-webkit-scrollbar-thumb,.screen::-webkit-scrollbar-thumb{background:var(--surface-3);border-radius:3px}.fab{position:absolute;right:18px;bottom:24px;width:50px;height:50px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:var(--surface-2);border:1px solid var(--line);color:var(--text);box-shadow:0 6px 18px rgba(0,0,0,.35);z-index:20;transition:background .15s,transform .1s}.fab:hover{background:var(--surface-3)}.fab:active{transform:scale(.94)}.fab-tooltip{position:absolute;right:76px;bottom:36px;max-width:180px;padding:8px 12px;border-radius:10px;background:var(--surface-2);border:1px solid var(--line);color:var(--text);font-size:12px;line-height:1.5;box-shadow:0 6px 18px rgba(0,0,0,.35);z-index:20;opacity:1;transition:opacity .4s ease}.fab-tooltip:after{content:"";position:absolute;right:-6px;top:50%;transform:translateY(-50%);width:0;height:0;border:6px solid transparent;border-left:6px solid var(--surface-2)}.fab-tooltip.fab-tooltip-out{opacity:0}.modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.55);display:flex;align-items:center;justify-content:center;padding:20px;z-index:50;animation:fade-in .18s ease}.modal{width:100%;max-width:400px;max-height:86vh;overflow-y:auto;background:var(--bg-frame);border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px}