:root{color-scheme:light;--bg: #f5f4f0;--surface: #ffffff;--surface-2: #eceae5;--text: #1a1816;--muted: #6b6862;--muted-2: #9a968d;--line: #e0ddd7;--line-strong: #c8c4bc;--primary: #1a1816;--primary-text: #fafaf9;--danger: #c0392b;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 18px;--shadow-sm: 0 1px 3px rgba(26, 24, 22, .06);--shadow-md: 0 4px 12px rgba(26, 24, 22, .08);--shadow-lg: 0 12px 32px rgba(26, 24, 22, .12);--ease: cubic-bezier(.4, 0, .2, 1);--transition: .18s var(--ease)}:root[data-theme=dark]{color-scheme:dark;--bg: #1a1b1e;--surface: #24262a;--surface-2: #2e3035;--text: #f0ede6;--muted: #a89e8e;--muted-2: #7a7268;--line: #3a3732;--line-strong: #4a4640;--primary: #e8c84a;--primary-text: #1a1816;--danger: #e74c3c;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .18);--shadow-md: 0 4px 12px rgba(0, 0, 0, .22);--shadow-lg: 0 12px 32px rgba(0, 0, 0, .3)}*,*:before,*:after{box-sizing:border-box;-webkit-tap-highlight-color:transparent}*:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:var(--radius-sm)}html,body,#root{width:100%;min-height:100%;margin:0}body{min-height:100vh;overflow-x:hidden;background:var(--bg);color:var(--text);font-family:Geist,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}button,input,select{font:inherit}.screen{min-height:100svh;padding:max(20px,env(safe-area-inset-top)) max(20px,env(safe-area-inset-right)) max(20px,env(safe-area-inset-bottom)) max(20px,env(safe-area-inset-left))}.home-screen{display:grid;grid-template-columns:minmax(280px,1fr) minmax(280px,440px);gap:40px;align-items:center;max-width:1120px;margin:0 auto}.home-hero h1{margin:8px 0 12px;font-size:clamp(56px,9vw,110px);line-height:.93;letter-spacing:-.02em}.subtitle{margin:0 0 28px;color:var(--muted);font-size:clamp(20px,3vw,32px);font-weight:700;letter-spacing:-.01em}.eyebrow{margin:0;color:var(--muted-2);font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase}.stats-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}.stats-row span,.skin-tags b{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:999px;padding:7px 14px;background:var(--surface);color:var(--muted);font-size:14px;font-weight:600;transition:border-color var(--transition)}.rank-panel{width:min(100%,430px);margin:0 0 16px;border:1px solid var(--line);border-radius:var(--radius-lg);padding:16px;background:var(--surface);display:grid;gap:10px;box-shadow:var(--shadow-sm);transition:box-shadow var(--transition)}.rank-panel-main,.rank-progress-text{display:flex;align-items:baseline;justify-content:space-between;gap:14px}.rank-panel-main span,.rank-progress-text{color:var(--muted);font-weight:700}.rank-panel-main strong{font-size:clamp(26px,4vw,42px);line-height:1;letter-spacing:-.02em}.rank-progress-track{height:10px;overflow:hidden;border-radius:999px;background:var(--surface-2)}.rank-progress-track div{height:100%;border-radius:inherit;background:var(--primary);transition:width .4s var(--ease)}.home-actions{display:grid;gap:12px;margin-top:8px}.version-badge{text-align:center;color:var(--muted-2);font-size:12px;font-weight:600;opacity:.5;padding-top:6px;letter-spacing:.04em}.btn{min-height:56px;border:1px solid var(--line-strong);border-radius:var(--radius-md);padding:0 22px;display:inline-flex;align-items:center;justify-content:center;gap:10px;cursor:pointer;font-size:17px;font-weight:700;color:var(--text);background:var(--surface);box-shadow:var(--shadow-sm);transition:background var(--transition),border-color var(--transition),box-shadow var(--transition),transform var(--transition),color var(--transition);-webkit-user-select:none;user-select:none}.btn:hover{background:var(--surface-2);border-color:var(--line-strong);box-shadow:var(--shadow-md)}.btn:active{transform:scale(.97);box-shadow:var(--shadow-sm)}.btn-primary{background:var(--primary);color:var(--primary-text);border-color:transparent}.btn-primary:hover{background:color-mix(in srgb,var(--primary) 88%,white);border-color:transparent;box-shadow:var(--shadow-md)}.btn-danger{background:var(--danger);color:#fff;border-color:transparent}.btn-danger:hover{background:color-mix(in srgb,var(--danger) 88%,white)}.btn-ghost{min-height:48px;background:transparent;border-color:transparent;box-shadow:none}.btn-ghost:hover{background:var(--surface-2);box-shadow:none}.btn:disabled{opacity:.45;cursor:default;pointer-events:none}.game-screen{display:grid;place-items:center;padding:max(8px,env(safe-area-inset-top)) max(8px,env(safe-area-inset-right)) max(8px,env(safe-area-inset-bottom)) max(8px,env(safe-area-inset-left))}.game-panel{width:100%;max-width:1360px;height:calc(100svh - 16px);min-height:620px;display:grid;grid-template-columns:minmax(0,1fr) clamp(212px,26vw,260px);grid-template-rows:auto 1fr auto;gap:10px;align-items:stretch}.topbar,.setup-bar,.game-actions{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:10px;box-shadow:var(--shadow-sm)}.topbar{grid-column:2;grid-row:1;display:grid;gap:8px;align-content:start}.move-list-header{display:flex;align-items:center;justify-content:space-between;padding:4px 0;font-size:13px;font-weight:700;color:var(--muted-2);text-transform:uppercase;letter-spacing:.04em}.sgf-btn{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);color:var(--muted);cursor:pointer;transition:background var(--transition),border-color var(--transition)}.sgf-btn:hover:not(:disabled){background:var(--surface-2);border-color:var(--line-strong)}.sgf-btn:disabled{opacity:.35;cursor:default}.move-list{max-height:140px;overflow-y:auto;display:flex;flex-direction:column;gap:2px;font-size:13px;font-weight:600}.move-item{display:flex;align-items:center;gap:6px;padding:3px 6px;border-radius:var(--radius-sm);transition:background var(--transition)}.move-item:hover,.move-item.move-last{background:var(--surface-2)}.move-num{min-width:22px;text-align:right;color:var(--muted-2);font-size:11px}.move-player{width:14px;text-align:center}.move-black{color:#222}.move-white{color:#999}.move-coord{font-family:Geist Mono,Courier New,monospace;font-variant-numeric:tabular-nums}.move-empty{color:var(--muted-2);font-size:12px;padding:4px}.topbar-status strong{display:block;font-size:20px;letter-spacing:-.01em}.topbar-status span{color:var(--muted);font-size:13px}.timer-display{display:flex;align-items:center;justify-content:center;gap:8px;padding:8px 0}.timer-item{display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 12px;border-radius:var(--radius-sm);background:var(--bg);min-width:56px;transition:box-shadow var(--transition),background var(--transition)}.timer-item.timer-active{box-shadow:inset 0 0 0 2px var(--primary);background:var(--surface)}.timer-item.timer-expired{opacity:.4}.timer-label{font-size:10px;font-weight:700;color:var(--muted-2);text-transform:uppercase;letter-spacing:.05em}.timer-value{font-size:18px;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:-.02em}.topbar strong{display:block;font-size:20px}.topbar span{color:var(--muted)}.setup-bar{grid-column:2;grid-row:2;display:grid;gap:8px;align-content:start}.game-actions{grid-column:2;grid-row:3;display:grid;gap:8px}.commentary-bubble{grid-column:2;grid-row:2;align-self:end;margin:0 8px 8px;border:1px solid var(--line);border-radius:var(--radius-md);padding:14px;background:color-mix(in srgb,var(--surface) 94%,transparent);box-shadow:var(--shadow-lg);opacity:0;transform:translateY(8px);transition:opacity .26s var(--ease),transform .26s var(--ease);pointer-events:none}.commentary-bubble.is-visible{opacity:1;transform:translateY(0)}.commentary-bubble div{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px}.commentary-bubble strong{font-size:14px;font-weight:700}.commentary-bubble span{border:1px solid var(--line);border-radius:999px;padding:3px 8px;color:var(--muted);font-size:11px;font-weight:700}.commentary-bubble p{margin:0;font-size:17px;font-weight:700;line-height:1.4}.board-wrap{grid-column:1;grid-row:1 / span 3;width:100%;height:100%;min-height:0;display:grid;place-items:center}.board-canvas{touch-action:none;-webkit-user-select:none;user-select:none;max-width:100%;max-height:100%;box-shadow:var(--shadow-lg);border-radius:var(--radius-md);transition:box-shadow var(--transition)}.segmented{display:flex;flex-wrap:wrap;gap:5px;padding:5px;background:var(--surface-2);border-radius:var(--radius-md)}.segmented button{min-height:44px;border:0;border-radius:var(--radius-sm);padding:0 14px;color:var(--text);background:transparent;font-weight:700;font-size:14px;cursor:pointer;flex:1;transition:background var(--transition),box-shadow var(--transition),color var(--transition)}.segmented button:hover{background:color-mix(in srgb,var(--surface) 70%,transparent)}.segmented button.active{background:var(--surface);box-shadow:var(--shadow-sm);color:var(--primary)}.page-screen{max-width:1180px;margin:0 auto}.page-header{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:22px}.page-header h1{margin:0;font-size:36px;letter-spacing:-.02em}.skin-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px}.skin-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;color:var(--muted);font-weight:700;font-size:14px}.skin-card{min-height:170px;border:1px solid var(--line);border-radius:var(--radius-md);padding:14px;text-align:left;display:grid;gap:8px;background:var(--surface);color:var(--text);cursor:pointer;box-shadow:var(--shadow-sm);transition:border-color var(--transition),box-shadow var(--transition),transform var(--transition),background var(--transition)}.skin-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow-md);transform:translateY(-2px)}.skin-card:active{transform:translateY(0) scale(.98)}.skin-card.is-locked{opacity:.5}.skin-card.is-locked:hover{transform:none;box-shadow:var(--shadow-sm)}.skin-preview{display:flex;gap:8px;align-items:center;min-height:68px;overflow:hidden;border-radius:var(--radius-sm)}.piece-skin-preview{justify-content:center;background:var(--surface-2)}.skin-preview img{width:100%;height:82px;object-fit:cover;border-radius:var(--radius-sm);background:var(--surface-2)}.board-preview img{height:98px}.board-preview{justify-content:center;background:#d6b88159}.board-preview-canvas{display:block;width:154px;height:92px;border-radius:var(--radius-sm)}.skin-card strong{font-size:17px;font-weight:700;letter-spacing:-.01em}.skin-card small{color:var(--muted);font-weight:700;line-height:1.3;font-size:13px}.skin-card span{color:var(--muted-2);font-size:13px;line-height:1.35}.unlock-text{display:inline-flex;align-items:center;gap:5px}.skin-tags{display:flex;flex-wrap:wrap;gap:6px}.skin-tags b{padding:4px 8px;font-size:11px;font-weight:600}.settings-screen{max-width:760px}.settings-list{display:grid;gap:12px}.settings-group{display:grid;gap:12px;border:1px solid var(--line);border-radius:var(--radius-lg);padding:16px;background:color-mix(in srgb,var(--surface) 72%,transparent)}.settings-group h2{margin:0;font-size:22px;letter-spacing:-.01em}.setting-row{min-height:80px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 18px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--surface);font-size:19px;font-weight:700;box-shadow:var(--shadow-sm);transition:border-color var(--transition),box-shadow var(--transition)}.setting-row:hover{border-color:var(--line-strong)}.setting-field{display:grid;gap:10px;padding:16px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--surface);font-size:17px;font-weight:700;box-shadow:var(--shadow-sm)}.setting-field input{min-height:50px;width:100%;border:1px solid var(--line);border-radius:var(--radius-sm);padding:0 14px;background:var(--bg);color:var(--text);font-size:16px;font-weight:500;transition:border-color var(--transition),box-shadow var(--transition)}.setting-field input:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 18%,transparent)}.setting-field small{color:var(--muted);font-size:13px;font-weight:600;line-height:1.5}.ai-test-row{align-items:flex-start}.api-test-message{margin:0;border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px;background:var(--surface);color:var(--muted);font-weight:700;font-size:14px;line-height:1.5}.api-test-message.success{color:#17803b;border-color:#17803b44;background:color-mix(in srgb,#17803b 8%,var(--surface))}.api-test-message.error{color:var(--danger);border-color:color-mix(in srgb,var(--danger) 35%,transparent);background:color-mix(in srgb,var(--danger) 8%,var(--surface))}.setting-row input[type=checkbox]{width:36px;height:36px;accent-color:var(--primary);cursor:pointer}.version-card{display:grid;gap:10px;border:1px solid var(--line);border-radius:var(--radius-md);padding:16px;background:var(--surface);box-shadow:var(--shadow-sm)}.version-card strong{font-size:19px;letter-spacing:-.01em}.version-card ul{margin:0;padding-left:20px;color:var(--muted);font-size:14px;font-weight:700;line-height:1.6}.confirm-actions{display:flex;flex-wrap:wrap;gap:8px}@media (max-width: 900px){.home-screen{grid-template-columns:1fr;gap:28px;align-content:center}.game-panel{height:auto;min-height:calc(100svh - 20px);grid-template-columns:1fr;grid-template-rows:auto auto minmax(320px,auto) auto}.topbar,.setup-bar,.commentary-bubble,.board-wrap,.game-actions{grid-column:1;grid-row:auto}.commentary-bubble{align-self:auto;margin:0}.board-wrap{aspect-ratio:1;max-height:76svh}.game-actions{grid-template-columns:1fr 1fr}.page-header{align-items:stretch;flex-direction:column}}@media (max-width: 560px){.screen{padding:14px}.btn{min-height:52px;font-size:16px}.skin-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.skin-card{min-height:164px}}