html,:root,html[data-theme=light],.theme-light{--bg-base: #f7f5f2;--bg-page-gradient: var(--gradient-mesh);--bg-2048: #f5f0e8;--surface-1: #ffffff;--surface-2: #f3f1ee;--surface-3: #eae7e2;--text-primary: #1a1816;--text-secondary: #6b6560;--text-muted: #a39e98;--border-subtle: rgba(26, 24, 22, .07);--border-strong: #d6d2cc;--accent: #0f766e;--accent-light: #14b8a6;--accent-soft: rgba(15, 118, 110, .1);--shadow-sm: 0 .0625rem .375rem rgba(26, 24, 22, .06);--shadow-md: 0 .25rem 1rem rgba(26, 24, 22, .08);--shadow-lg: 0 .5rem 1.5rem rgba(26, 24, 22, .12);--overlay-bg: rgba(26, 24, 22, .4);--btn-primary-bg: linear-gradient(135deg, #14b8a6, #0f766e);--btn-primary-text: #fff;--btn-primary-shadow: #0a5c56;--btn-surface-shadow: #d6d2cc;--elev-edge-light: rgba(255, 255, 255, .92);--elev-edge-dark: rgba(26, 24, 22, .14);--elev-panel-top: #ffffff;--elev-panel-bot: #f6f4f1;--elev-panel-shadow: 0 .4375rem 1.25rem rgba(26, 24, 22, .1), inset 0 .03125rem 0 var(--elev-edge-light);--elev-float-shadow: 0 .3125rem .875rem rgba(26, 24, 22, .09), 0 .09375rem 0 rgba(26, 24, 22, .05), inset 0 .03125rem 0 var(--elev-edge-light);--elev-inset-bg: #eeece8;--elev-inset-border: rgba(26, 24, 22, .08);--elev-inset-shadow: inset 0 .09375rem .25rem rgba(26, 24, 22, .08), inset 0 -.03125rem 0 rgba(255, 255, 255, .6);--elev-btn-top: #ffffff;--elev-btn-bot: #f0eeea;--elev-btn-shadow: 0 .15625rem 0 var(--elev-edge-dark), 0 .25rem .625rem rgba(26, 24, 22, .07), inset 0 .03125rem 0 var(--elev-edge-light);--elev-btn-shadow-active: inset 0 .0625rem .1875rem rgba(26, 24, 22, .1);--elev-btn-active-top: rgba(15, 118, 110, .14);--elev-btn-active-bot: rgba(15, 118, 110, .06);--elev-btn-active-edge: rgba(15, 118, 110, .28);--elev-btn-active-shadow: 0 .09375rem 0 rgba(15, 118, 110, .2), inset 0 .03125rem 0 rgba(255, 255, 255, .5);--elev-accent-top: #18c4b2;--elev-accent-bot: #0f766e;--elev-accent-shadow: 0 .1875rem 0 var(--btn-primary-shadow), 0 .4375rem 1rem rgba(15, 118, 110, .35), inset 0 .03125rem 0 rgba(255, 255, 255, .28);--danger: #dc2626;--game-2048: #f07830;--game-sudoku: #3d8b6e;--game-mine: #6aab55;--game-slide: #6366f1;--slide-page-gradient: linear-gradient(165deg, #f5f3ff 0%, #e0e7ff 42%, #c7d2fe 100%);--slide-glass-bg: rgba(245, 243, 255, .94);--slide-glass-border: rgba(99, 102, 241, .22);--slide-title: #3730a3;--slide-sub: #6366f1;--slide-hint-bg: rgba(99, 102, 241, .12);--slide-hint-border: rgba(99, 102, 241, .28);--slide-board-bg: #7c82b5;--slide-tile-bg: #eef2ff;--slide-tile-empty: rgba(165, 180, 252, .35);--slide-btn-ghost-bg: rgba(99, 102, 241, .1);--2048-title: #776e65;--2048-sub: #9a9088;--2048-font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;--2048-fw-ui: 600;--2048-fw-num: 600;--2048-page-gradient: linear-gradient(165deg, #fff9f3 0%, #ffe8d4 42%, #ffd0a0 100%);--2048-glass-bg: rgba(255, 252, 247, .94);--2048-glass-border: rgba(240, 120, 48, .22);--2048-score-bg: rgba(255, 248, 240, .92);--2048-score-label: #948880;--2048-stat-value: var(--2048-title);--2048-hint: var(--2048-sub);--2048-swipe-banner-bg: rgba(240, 120, 48, .14);--2048-swipe-banner-border: rgba(240, 120, 48, .35);--2048-timer-bg: rgba(240, 120, 48, .2);--2048-timer-border: rgba(240, 120, 48, .5);--2048-timer-text: #c45a18;--2048-timer-fill: linear-gradient(90deg, #f07830, #ff9a4d);--2048-timer-urgent-bg: rgba(234, 88, 12, .22);--2048-timer-urgent-border: rgba(234, 88, 12, .55);--2048-timer-urgent-text: #c2410c;--2048-timer-urgent-fill: linear-gradient(90deg, #ea580c, #f97316);--2048-timer-critical-bg: rgba(220, 38, 38, .18);--2048-timer-critical-border: rgba(220, 38, 38, .6);--2048-timer-critical-text: #b91c1c;--2048-timer-critical-fill: linear-gradient(90deg, #dc2626, #ef4444);--2048-board-bg: #b8a492;--2048-board-cell: #cdc1b4;--2048-board-frame: #a89888;--2048-board-tray-shadow: 0 10px 28px rgba(80, 50, 20, .22), 0 2px 8px rgba(80, 50, 20, .12);--2048-board-inset: inset 0 5px 14px rgba(40, 28, 18, .28), inset 0 1px 0 rgba(255, 255, 255, .08);--2048-tile-lift: 0 5px 14px rgba(40, 28, 18, .22), 0 2px 4px rgba(40, 28, 18, .12);--2048-tile-highlight: inset 0 1px 0 rgba(255, 255, 255, .42);--2048-btn-bg: #f07830;--2048-btn-text: #faf8f5;--2048-btn-ghost-bg: rgba(125, 107, 92, .12);--2048-modal-bg: #ffffff;--2048-overlay: rgba(26, 24, 22, .45);--sudoku-board-border: #1a1a1a;--sudoku-cell-border: rgba(26, 26, 26, .12);--sudoku-cell-bg: #ffffff;--sudoku-given-bg: #ffffff;--sd-page-bg: #e1f0e5;--sd-stone-bg: #e1f0e5;--sd-stone-texture: none;--sd-wood-frame: #1a1a1a;--sd-wood-base: #e8f3ec;--sd-wood-tile: #ffffff;--sd-wood-tile-light: #ffffff;--sd-wood-tile-given: #ffffff;--sd-wood-btn-top: #ffffff;--sd-wood-btn-bot: #f5faf7;--sd-wood-btn-shadow: 0 .0625rem .25rem rgba(45, 90, 70, .08);--sd-wood-glyph: #2d6a52;--sd-num-given: #1a1a1a;--sd-num-user: #1a1a1a;--sd-timer-bg: transparent;--sd-select-bg: #76b98e;--sd-peer-bg: rgba(118, 185, 142, .13);--sd-same-bg: rgba(118, 185, 142, .42);--sd-hint-bg: rgba(111, 191, 150, .55);--sd-box-bg: rgba(111, 191, 150, .28);--sd-error-bg: rgba(239, 68, 68, .18);--sd-kb-key-top: #ffffff;--sd-kb-key-bot: #ffffff;--sd-kb-pad-bg: #e1f0e5;--sd-hint-btn-top: #76b98e;--sd-hint-btn-bot: #5f9a78;--sd-accent: #5f9a78;--sd-chrome-muted: #5a7a68;--bg-page: var(--bg-base);--card-bg: var(--surface-1);--card-border: var(--border-subtle);--card-shadow: var(--shadow-md);--icon-btn-bg: var(--surface-2);--icon-btn-border: var(--border-subtle);--icon-btn-text: var(--accent);--sheet-bg: var(--surface-1);--sheet-handle: var(--border-strong);--chip-bg: var(--surface-2);--chip-active-bg: var(--accent-soft);--chip-active-border: var(--accent);--chip-text: var(--text-secondary);--radius-sm: .375rem;--radius-md: .5625rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-pill: 31.21875rem;--gradient-primary: linear-gradient(135deg, #2dd4bf 0%, #0f766e 100%);--gradient-mesh: radial-gradient(ellipse 80% 60% at 90% 0%, rgba(45, 212, 191, .15) 0%, transparent 55%), radial-gradient(ellipse 70% 50% at 0% 100%, rgba(91, 141, 239, .12) 0%, transparent 50%), linear-gradient(165deg, #fafbfc 0%, #f4f6f8 50%, #eef2f5 100%);--glass-bg: rgba(255, 255, 255, .82);--glass-border: rgba(255, 255, 255, .6);--glass-shadow: 0 .25rem 1rem rgba(26, 24, 22, .08), 0 .03125rem 0 rgba(255, 255, 255, .8) inset;--surface-inset: #eef0f2;--shadow-primary: 0 .25rem .875rem rgba(15, 118, 110, .32);--shadow-primary-soft: 0 .125rem .5rem rgba(15, 118, 110, .18);--lobby-hub-bg: #f4f4f1;--lobby-hub-section: #787774;--lobby-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif}html[data-theme=dark],.theme-dark{--bg-base: #121110;--bg-page-gradient: var(--gradient-mesh);--bg-2048: #1a1918;--surface-1: #1e1d1b;--surface-2: #2a2826;--surface-3: #363432;--text-primary: #f5f3f0;--text-secondary: #a8a29e;--text-muted: #78716c;--border-subtle: rgba(255, 255, 255, .07);--border-strong: #44403c;--accent: #2dd4bf;--accent-light: #5eead4;--accent-soft: rgba(45, 212, 191, .12);--shadow-sm: 0 .0625rem .375rem rgba(0, 0, 0, .25);--shadow-md: 0 .25rem 1rem rgba(0, 0, 0, .35);--shadow-lg: 0 .5rem 1.5rem rgba(0, 0, 0, .45);--overlay-bg: rgba(0, 0, 0, .6);--btn-primary-bg: linear-gradient(135deg, #14b8a6, #0d9488);--btn-primary-text: #fff;--btn-primary-shadow: #0d9488;--btn-surface-shadow: #44403c;--elev-edge-light: rgba(255, 255, 255, .08);--elev-edge-dark: rgba(0, 0, 0, .35);--elev-panel-top: #252422;--elev-panel-bot: #1a1918;--elev-panel-shadow: 0 .4375rem 1.25rem rgba(0, 0, 0, .4), inset 0 .03125rem 0 var(--elev-edge-light);--elev-float-shadow: 0 .3125rem .875rem rgba(0, 0, 0, .35), 0 .09375rem 0 rgba(0, 0, 0, .25), inset 0 .03125rem 0 var(--elev-edge-light);--elev-inset-bg: #141312;--elev-inset-border: rgba(255, 255, 255, .06);--elev-inset-shadow: inset 0 .09375rem .3125rem rgba(0, 0, 0, .35);--elev-btn-top: #2e2c2a;--elev-btn-bot: #232220;--elev-btn-shadow: 0 .15625rem 0 var(--elev-edge-dark), 0 .25rem .625rem rgba(0, 0, 0, .3), inset 0 .03125rem 0 var(--elev-edge-light);--elev-btn-shadow-active: inset 0 .0625rem .1875rem rgba(0, 0, 0, .35);--elev-btn-active-top: rgba(45, 212, 191, .18);--elev-btn-active-bot: rgba(45, 212, 191, .08);--elev-btn-active-edge: rgba(45, 212, 191, .35);--elev-btn-active-shadow: 0 .09375rem 0 rgba(45, 212, 191, .25);--elev-accent-top: #1dd4bd;--elev-accent-bot: #0d9488;--elev-accent-shadow: 0 .1875rem 0 var(--btn-primary-shadow), 0 .4375rem 1rem rgba(13, 148, 136, .4), inset 0 .03125rem 0 rgba(255, 255, 255, .12);--danger: #f87171;--game-2048: #ff9a4d;--game-sudoku: #6fbf96;--game-mine: #5a9a45;--game-slide: #818cf8;--slide-page-gradient: linear-gradient(165deg, #1e1b2e 0%, #252140 45%, #2d2858 100%);--slide-glass-bg: rgba(38, 36, 58, .92);--slide-glass-border: rgba(129, 140, 248, .24);--slide-title: #e0e7ff;--slide-sub: #a5b4fc;--slide-hint-bg: rgba(129, 140, 248, .16);--slide-hint-border: rgba(129, 140, 248, .32);--slide-board-bg: #4a4670;--slide-tile-bg: #312e52;--slide-tile-empty: rgba(99, 102, 241, .22);--slide-btn-ghost-bg: rgba(129, 140, 248, .12);--2048-title: #d6d3d1;--2048-sub: #a8a29e;--2048-font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;--2048-fw-ui: 600;--2048-fw-num: 600;--2048-page-gradient: linear-gradient(165deg, #1c1917 0%, #292017 45%, #3d2a18 100%);--2048-glass-bg: rgba(38, 34, 30, .92);--2048-glass-border: rgba(255, 154, 77, .22);--2048-score-bg: rgba(60, 54, 48, .72);--2048-score-label: #a8a29e;--2048-stat-value: var(--2048-title);--2048-hint: var(--2048-sub);--2048-swipe-banner-bg: rgba(255, 154, 77, .16);--2048-swipe-banner-border: rgba(255, 154, 77, .32);--2048-timer-bg: rgba(255, 154, 77, .18);--2048-timer-border: rgba(255, 154, 77, .45);--2048-timer-text: #fdba74;--2048-timer-fill: linear-gradient(90deg, #ff9a4d, #ffb366);--2048-timer-urgent-bg: rgba(251, 146, 60, .2);--2048-timer-urgent-border: rgba(251, 146, 60, .55);--2048-timer-urgent-text: #fb923c;--2048-timer-urgent-fill: linear-gradient(90deg, #f97316, #fb923c);--2048-timer-critical-bg: rgba(248, 113, 113, .2);--2048-timer-critical-border: rgba(248, 113, 113, .62);--2048-timer-critical-text: #fca5a5;--2048-timer-critical-fill: linear-gradient(90deg, #ef4444, #f87171);--2048-board-bg: #5a524a;--2048-board-cell: #4a443e;--2048-board-frame: #6b6258;--2048-board-tray-shadow: 0 12px 32px rgba(0, 0, 0, .38), 0 2px 8px rgba(0, 0, 0, .22);--2048-board-inset: inset 0 5px 14px rgba(0, 0, 0, .42), inset 0 1px 0 rgba(255, 255, 255, .06);--2048-tile-lift: 0 6px 16px rgba(0, 0, 0, .35), 0 2px 4px rgba(0, 0, 0, .2);--2048-tile-highlight: inset 0 1px 0 rgba(255, 255, 255, .18);--2048-btn-bg: #ff9a4d;--2048-btn-text: #fafaf9;--2048-btn-ghost-bg: rgba(255, 255, 255, .08);--2048-modal-bg: #292524;--2048-overlay: rgba(0, 0, 0, .7);--sudoku-board-border: #e8f3ec;--sudoku-cell-border: rgba(255, 255, 255, .1);--sudoku-cell-bg: #2a3530;--sudoku-given-bg: #2a3530;--sd-page-bg: #1a2420;--sd-stone-bg: #1a2420;--sd-stone-texture: none;--sd-wood-frame: #e8f3ec;--sd-wood-base: #1a2420;--sd-wood-tile: #2a3530;--sd-wood-tile-light: #2a3530;--sd-wood-tile-given: #2a3530;--sd-wood-btn-top: #2a3530;--sd-wood-btn-bot: #243029;--sd-wood-btn-shadow: 0 .0625rem .25rem rgba(0, 0, 0, .25);--sd-wood-glyph: #a8d5bc;--sd-num-given: #f0f4f2;--sd-num-user: #d4e8dc;--sd-timer-bg: transparent;--sd-select-bg: #4a9d7a;--sd-peer-bg: rgba(74, 157, 122, .18);--sd-same-bg: rgba(74, 157, 122, .32);--sd-hint-bg: rgba(74, 157, 122, .45);--sd-box-bg: rgba(74, 157, 122, .22);--sd-error-bg: rgba(248, 113, 113, .2);--sd-kb-key-top: #2a3530;--sd-kb-key-bot: #2a3530;--sd-kb-pad-bg: #243029;--sd-hint-btn-top: #4a9d7a;--sd-hint-btn-bot: #3d8b6e;--sd-accent: #6fbf96;--sd-chrome-muted: #8aab98;--bg-page: var(--bg-base);--card-bg: var(--surface-1);--card-border: var(--border-subtle);--card-shadow: var(--shadow-md);--icon-btn-bg: var(--surface-2);--icon-btn-border: var(--border-subtle);--icon-btn-text: var(--accent);--sheet-bg: var(--surface-1);--sheet-handle: var(--border-strong);--chip-bg: var(--surface-2);--chip-active-bg: var(--accent-soft);--chip-active-border: var(--accent);--chip-text: var(--text-secondary);--radius-sm: .375rem;--radius-md: .5625rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-pill: 31.21875rem;--gradient-primary: linear-gradient(135deg, #2dd4bf 0%, #0d9488 100%);--gradient-mesh: radial-gradient(ellipse 80% 60% at 90% 0%, rgba(45, 212, 191, .12) 0%, transparent 55%), radial-gradient(ellipse 70% 50% at 0% 100%, rgba(91, 141, 239, .1) 0%, transparent 50%), linear-gradient(165deg, #121110 0%, #1a1918 50%, #0f2926 100%);--glass-bg: rgba(30, 29, 27, .88);--glass-border: rgba(255, 255, 255, .08);--glass-shadow: 0 .25rem 1rem rgba(0, 0, 0, .35);--surface-inset: #141312;--shadow-primary: 0 .25rem .875rem rgba(13, 148, 136, .4);--shadow-primary-soft: 0 .125rem .5rem rgba(13, 148, 136, .25);--lobby-hub-bg: #161616;--lobby-hub-section: #9b9b9b;--lobby-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif}uni-page-body{background-color:var(--bg-base);color:var(--text-primary)}body{background-color:var(--bg-base)}.theme-light,.theme-dark{color:var(--text-primary)}.elev-panel{background:linear-gradient(180deg,var(--elev-panel-top) 0%,var(--elev-panel-bot) 100%);border-radius:.875rem;border:.03125rem solid var(--border-subtle);border-bottom:.125rem solid var(--elev-edge-dark);box-shadow:var(--elev-panel-shadow);box-sizing:border-box}.elev-float{background:linear-gradient(180deg,var(--elev-panel-top) 0%,var(--elev-panel-bot) 100%);border-radius:.75rem;border:.03125rem solid var(--border-subtle);border-bottom:.09375rem solid var(--elev-edge-dark);box-shadow:var(--elev-float-shadow);box-sizing:border-box}.elev-inset{background:var(--elev-inset-bg);border-radius:.6875rem;border:.03125rem solid var(--elev-inset-border);box-shadow:var(--elev-inset-shadow);box-sizing:border-box}.btn-3d-icon__cap{width:2.375rem;height:2.375rem;border-radius:.625rem;background:linear-gradient(180deg,var(--elev-btn-top) 0%,var(--elev-btn-bot) 100%);border:.03125rem solid var(--border-subtle);border-bottom:.125rem solid var(--elev-edge-dark);box-shadow:var(--elev-btn-shadow);display:flex;align-items:center;justify-content:center;transition:transform .1s ease,box-shadow .1s ease,border-bottom-width .1s ease;box-sizing:border-box}.btn-3d-icon:active .btn-3d-icon__cap{transform:translateY(.09375rem);border-bottom-width:.03125rem;box-shadow:var(--elev-btn-shadow-active)}.btn-3d-icon__glyph{font-size:1rem;line-height:1;font-weight:600;color:var(--btn-3d-icon-color, var(--accent))}.btn-3d-icon--active .btn-3d-icon__cap{background:linear-gradient(180deg,var(--elev-btn-active-top) 0%,var(--elev-btn-active-bot) 100%);border-bottom-color:var(--elev-btn-active-edge);box-shadow:var(--elev-btn-active-shadow)}.btn-3d-icon--active .btn-3d-icon__glyph{color:var(--btn-3d-icon-active-color, var(--accent))}.btn-3d-icon--active .btn-3d-icon__label{color:var(--accent);font-weight:700}.btn-3d-icon--disabled{opacity:.38;pointer-events:none}.btn-3d-icon--sudoku .btn-3d-icon__glyph{color:var(--game-sudoku)}.btn-3d-icon--sudoku.btn-3d-icon--active .btn-3d-icon__cap{background:linear-gradient(180deg,rgba(91,141,239,.18),rgba(91,141,239,.08));border-bottom-color:rgba(91,141,239,.35)}.btn-3d-icon--sudoku.btn-3d-icon--active .btn-3d-icon__glyph,.btn-3d-icon--sudoku.btn-3d-icon--active .btn-3d-icon__label{color:var(--game-sudoku)}.btn-3d-icon--accent .btn-3d-icon__cap{background:linear-gradient(180deg,var(--elev-accent-top) 0%,var(--elev-accent-bot) 100%);border-bottom-color:var(--btn-primary-shadow);box-shadow:var(--elev-accent-shadow)}.btn-3d-icon--accent .btn-3d-icon__glyph{color:#fff}.btn-3d-icon--accent .btn-3d-icon__label{color:var(--accent);font-weight:700}.btn-3d-bar{width:100%;display:flex;align-items:center;justify-content:center;gap:.375rem;padding:.8125rem 1rem;border-radius:.6875rem;border:none;box-sizing:border-box;transition:transform .1s ease,box-shadow .1s ease,border-bottom-width .1s ease}.btn-3d-bar--primary{background:linear-gradient(180deg,var(--elev-accent-top) 0%,var(--elev-accent-bot) 100%);border-bottom:.15625rem solid var(--btn-primary-shadow);box-shadow:var(--elev-accent-shadow)}.btn-3d-bar--secondary{background:linear-gradient(180deg,var(--elev-btn-top) 0%,var(--elev-btn-bot) 100%);border:.03125rem solid var(--border-subtle);border-bottom:.125rem solid var(--elev-edge-dark);box-shadow:var(--elev-btn-shadow)}.btn-3d-bar:active{transform:translateY(.09375rem);border-bottom-width:.03125rem}.btn-3d-bar--primary:active{box-shadow:0 .0625rem 0 var(--btn-primary-shadow),0 .1875rem .5rem 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