*,:before,:after{box-sizing:border-box}:root{--bg:#191210;--bg-raise:#241b17;--bg-panel:#2b201b;--ink:#efe6d8;--ink-dim:#b3a692;--line:#453528;--accent:#c9a45c;--accent-ink:#201709;--red:#c8452f;--red-soft:#e0684f;--black-piece:#3a332c;--ok:#6fae7c;--warn:#d9a441;--danger:#d1553f;--radius:10px;--hud-h:52px;--font-ui:"PingFang TC", "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;--font-display:"Kaiti TC", "BiauKai", "DFKai-SB", "PingFang TC", serif}html,body{background:var(--bg);height:100%;color:var(--ink);font-family:var(--font-ui);overscroll-behavior:none;margin:0;padding:0}body{-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none;touch-action:manipulation}#app{width:100%;height:100vh;height:100dvh;position:relative;overflow:hidden}button{font:inherit;color:inherit}.screen{padding:calc(16px + env(safe-area-inset-top)) calc(16px + env(safe-area-inset-right)) calc(16px + env(safe-area-inset-bottom)) calc(16px + env(safe-area-inset-left));background:radial-gradient(115% 95% at 50% 0,#241a14 0%,#191210 58%,#120d0b 100%);justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.screen[hidden]{display:none}.loading-inner{text-align:center}.loading-mark{background:radial-gradient(circle at 35% 30%,#f0dcb4,#cfa96f 70%,#a9834c);border-radius:50%;justify-content:center;align-items:center;width:84px;height:84px;margin:0 auto 20px;display:flex;box-shadow:0 10px 28px #0000008c,inset 0 -3px 8px #5a371473}.loading-mark span{font-family:var(--font-display);color:#8c2f1f;font-size:42px;font-weight:700}#loading-text{color:var(--ink-dim);letter-spacing:.12em;margin:0 0 16px}.loading-bar{background:#3a2c22;border-radius:2px;width:180px;height:3px;margin:0 auto;overflow:hidden}#loading-bar-fill{background:var(--accent);border-radius:2px;width:20%;height:100%;transition:width .35s}.error-inner{text-align:center;max-width:420px}.error-inner h2{margin:0 0 10px;font-size:20px}.error-inner p{color:var(--ink-dim);margin:0 0 22px;line-height:1.6}.home-inner{text-align:center;width:100%;max-width:420px}.home-eyebrow{color:var(--accent);letter-spacing:.5em;text-indent:.5em;margin:0 0 10px;font-size:13px}.home-title{font-family:var(--font-display);color:var(--ink);text-shadow:0 4px 24px #00000080;margin:0;font-size:clamp(56px,16vw,92px);font-weight:700;line-height:1.15}.home-subtitle{color:var(--ink-dim);letter-spacing:.3em;text-indent:.3em;text-transform:uppercase;margin:6px 0 42px;font-size:14px}.home-actions{flex-direction:column;align-items:stretch;gap:12px;max-width:280px;margin:0 auto;display:flex}.home-footnote{color:#7d6f5c;letter-spacing:.06em;margin-top:40px;font-size:12px}.home-copyright{color:#7d6f5c;letter-spacing:.04em;margin-top:8px;font-size:12px}.home-copyright a{color:var(--accent);border-bottom:1px solid #c9a45c73;padding-bottom:1px;text-decoration:none}.home-copyright a:hover{color:#e2bf7c;border-bottom-color:#e2bf7c}.home-copyright a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn{border-radius:var(--radius);cursor:pointer;letter-spacing:.08em;border:1px solid #0000;min-height:48px;padding:12px 22px;font-size:16px;font-weight:600;transition:transform .12s,background-color .15s,border-color .15s}.btn:active{transform:scale(.97)}.btn-primary{color:var(--accent-ink);background:linear-gradient(#d9b46e,#bd9350);border-color:#a37f42;box-shadow:0 3px 12px #0006,inset 0 1px #ffffff59}.btn-primary:hover{background:linear-gradient(#e2bf7c,#c69c58)}.btn-ghost{border-color:var(--line);color:var(--ink);background:#ffffff0b}.btn-ghost:hover{background:#ffffff17}.btn-small{min-height:44px;padding:8px 14px;font-size:14px}.icon-btn{border:1px solid var(--line);border-radius:var(--radius);cursor:pointer;min-width:44px;min-height:44px;color:var(--ink);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#140d0ab8;justify-content:center;align-items:center;display:inline-flex}.icon-btn:hover{background:#32241cd9}.setup-inner{background:var(--bg-raise);border:1px solid var(--line);border-radius:14px;width:min(440px,100%);padding:26px 24px;box-shadow:0 18px 48px #00000080}.setup-title{letter-spacing:.12em;margin:0 0 20px;font-size:20px}.field{border:0;margin-bottom:18px;padding:0;display:block}.field-label{color:var(--ink-dim);letter-spacing:.08em;margin-bottom:8px;font-size:13px;display:block}.field input[type=text]{border-radius:var(--radius);border:1px solid var(--line);width:100%;min-height:46px;color:var(--ink);-webkit-user-select:text;user-select:text;background:#1d1512;padding:10px 14px;font-size:16px}.field input[type=text]:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:#0000}.segmented{gap:8px;display:flex}.segment{flex:1}.segment input{opacity:0;pointer-events:none;position:absolute}.segment span{border:1px solid var(--line);border-radius:var(--radius);cursor:pointer;background:#1d1512;justify-content:center;align-items:center;min-height:46px;font-size:14px;transition:background-color .15s,border-color .15s;display:flex}.segment input:checked+span{border-color:var(--accent);color:var(--accent);background:#3a2c1d}.segment input:focus-visible+span{outline:2px solid var(--accent);outline-offset:1px}.field-row{justify-content:space-between;align-items:center;display:flex}.field-row .field-label{margin:0}.switch{appearance:none;border:1px solid var(--line);cursor:pointer;background:#3c2f26;border-radius:15px;width:52px;height:30px;transition:background-color .2s;position:relative}.switch:after{content:"";background:#cbbfa8;border-radius:50%;width:22px;height:22px;transition:transform .2s;position:absolute;top:3px;left:3px}.switch:checked{background:var(--accent)}.switch:checked:after{background:#241a10;transform:translate(22px)}.switch:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.setup-actions{gap:12px;margin-top:24px;display:flex}.setup-actions .btn{flex:1}.screen-game{background:#14100d;padding:0;display:block}#board-container{position:absolute;inset:0}#board-container canvas{touch-action:none;display:block}#hud-top{top:env(safe-area-inset-top);left:env(safe-area-inset-left);right:env(safe-area-inset-right);height:var(--hud-h);pointer-events:none;align-items:center;gap:10px;padding:6px 10px;display:flex;position:absolute}#hud-top>*{pointer-events:auto}#turn-indicator{border:1px solid var(--line);letter-spacing:.05em;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#140d0ac7;border-radius:999px;align-items:center;gap:8px;min-height:40px;padding:6px 14px;font-size:14px;font-weight:600;transition:box-shadow .3s,border-color .3s;display:flex}#turn-indicator.pulse{border-color:var(--accent);box-shadow:0 0 0 3px #c9a45c38}.color-chip{background:#6b6156;border:2px solid #ffffff40;border-radius:50%;flex:none;width:14px;height:14px}.color-chip.red{background:var(--red)}.color-chip.black{background:#211d19;border-color:#857a6a}.hud-meta{color:var(--ink-dim);border:1px solid var(--line);border-radius:var(--radius);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#140d0ab8;flex-direction:column;align-items:flex-end;gap:2px;margin-left:auto;padding:5px 10px;font-size:12px;display:flex}#hud-timer{font-variant-numeric:tabular-nums;color:var(--ink);font-weight:600}#hud-nocapture{font-variant-numeric:tabular-nums}#hud-nocapture.warn{color:var(--warn);font-weight:700}#hud-captured{top:calc(env(safe-area-inset-top) + var(--hud-h) + 2px);left:calc(env(safe-area-inset-left) + 10px);right:calc(env(safe-area-inset-right) + 10px);pointer-events:none;flex-direction:column;gap:4px;display:flex;position:absolute}.captured-row{align-items:center;gap:6px;min-height:26px;display:flex}.captured-label{width:22px;height:22px;font-size:12px;font-weight:700;font-family:var(--font-display);border-radius:50%;flex:none;justify-content:center;align-items:center;display:flex}.chip-red{background:var(--red);color:#ffe9dd}.chip-black{color:#d8cbb4;background:#26211c;border:1px solid #5c5245}.captured-list{scrollbar-width:none;gap:3px;max-width:calc(100% - 70px);display:flex;overflow-x:auto}.captured-list::-webkit-scrollbar{display:none}.captured-piece{width:22px;height:22px;font-family:var(--font-display);opacity:.92;background:radial-gradient(circle at 35% 30%,#efe0bd,#c8a670);border-radius:50%;flex:none;justify-content:center;align-items:center;font-size:13px;font-weight:700;display:flex;box-shadow:0 1px 3px #00000080}.captured-piece.red{color:#a93322}.captured-piece.black{color:#2c2620}.remaining{color:var(--ink-dim);font-variant-numeric:tabular-nums;background:#140d0a99;border-radius:999px;margin-left:auto;padding:2px 8px;font-size:12px}#game-copyright{bottom:calc(env(safe-area-inset-bottom) + 4px);text-align:center;letter-spacing:.04em;color:#6d6050;pointer-events:none;margin:0;font-size:11px;position:absolute;left:0;right:0}#game-copyright a{pointer-events:auto;color:#8d7f6b;border-bottom:1px solid #8d7f6b66;text-decoration:none}#game-copyright a:hover{color:var(--accent);border-bottom-color:var(--accent)}#game-copyright a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}#hud-bottom{bottom:calc(env(safe-area-inset-bottom) + 20px);left:calc(env(safe-area-inset-left) + 10px);right:calc(env(safe-area-inset-right) + 10px);pointer-events:none;align-items:center;gap:12px;padding:8px 0 10px;display:flex;position:absolute}#hud-bottom>*{pointer-events:auto}#hud-bottom .btn{white-space:nowrap;flex:none}#hud-hint{color:var(--ink-dim);text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:13px;overflow:hidden}#history-drawer{background:var(--bg-raise);border-top:1px solid var(--line);max-height:55%;padding:12px 16px calc(14px + env(safe-area-inset-bottom));border-radius:16px 16px 0 0;flex-direction:column;animation:.22s drawer-in;display:flex;position:absolute;bottom:0;left:0;right:0;box-shadow:0 -14px 40px #0000008c}#history-drawer[hidden]{display:none}@keyframes drawer-in{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}.drawer-head{justify-content:space-between;align-items:center;margin-bottom:6px;display:flex}.drawer-head h3{letter-spacing:.1em;margin:0;font-size:15px}#history-list,#history-list-mobile{color:var(--ink-dim);scrollbar-width:thin;margin:0;padding:0 0 4px;font-size:13px;line-height:1.5;list-style:none;overflow-y:auto}#history-list li,#history-list-mobile li{border-bottom:1px solid #ffffff0d;gap:8px;padding:5px 8px;display:flex}#history-list li:last-child,#history-list-mobile li:last-child{border-bottom:0}.history-turn{color:#7d6f5c;font-variant-numeric:tabular-nums;text-align:right;flex:none;width:2.4em}.history-capture{color:var(--red-soft)}#panel-side{display:none}@media (min-width:1024px){#hud-top{left:calc(env(safe-area-inset-left) + 12px);width:300px;height:auto;right:auto;top:calc(env(safe-area-inset-top) + 12px);flex-wrap:wrap}.hud-meta{flex-direction:row;align-items:center;gap:14px;margin-left:0;padding:8px 12px}#hud-captured{top:calc(env(safe-area-inset-top) + 128px);left:calc(env(safe-area-inset-left) + 12px);border:1px solid var(--line);border-radius:var(--radius);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#140d0ab8;gap:10px;width:300px;padding:12px;right:auto}.captured-list{flex-wrap:wrap;max-width:none;overflow:visible}.captured-row{align-items:flex-start}#panel-side{top:calc(env(safe-area-inset-top) + 12px);right:calc(env(safe-area-inset-right) + 12px);bottom:calc(env(safe-area-inset-bottom) + 12px);flex-direction:column;gap:12px;width:280px;display:flex;position:absolute}.panel-block{border:1px solid var(--line);border-radius:var(--radius);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#140d0ab8;padding:14px}.panel-block:first-child{flex-direction:column;flex:1;min-height:0;display:flex}.panel-heading{letter-spacing:.14em;color:var(--ink-dim);margin:0 0 8px;font-size:14px}#history-list{flex:1}.panel-actions{flex-wrap:wrap;gap:8px;display:flex}.panel-actions .btn{flex:45%}#hud-bottom{display:none}#history-drawer{display:none!important}#btn-menu{display:none}}dialog{border:1px solid var(--line);background:var(--bg-raise);color:var(--ink);border-radius:14px;width:min(520px,100vw - 32px);max-height:min(78dvh,720px);padding:0;box-shadow:0 24px 80px #0009}dialog::backdrop{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#080504a8}dialog[open]{animation:.18s dialog-in}@keyframes dialog-in{0%{opacity:0;transform:translateY(10px)scale(.98)}to{opacity:1;transform:none}}.dialog-body{padding:22px}.dialog-scroll{max-height:min(78dvh,720px);overflow-y:auto}.dialog-title{letter-spacing:.12em;margin:0 0 14px;font-size:19px}.dialog-body h3{color:var(--accent);letter-spacing:.08em;margin:20px 0 6px;font-size:15px}.dialog-body p{color:#d8cdbc;margin:6px 0;font-size:14px;line-height:1.75}.dialog-body p strong{color:var(--ink)}.rules-version{letter-spacing:.1em;border:1px solid var(--accent);border-radius:999px;padding:3px 12px;display:inline-block;color:var(--accent)!important;font-size:12px!important}.dialog-actions{justify-content:flex-end;gap:10px;margin-top:22px;display:flex}.dialog-actions-column{flex-direction:column}.dialog-actions-column .btn{width:100%}.menu-list{flex-direction:column;gap:8px;display:flex}.menu-list .btn{text-align:left;justify-content:flex-start}.cannon-diagram{border:1px solid var(--line);border-radius:var(--radius);background:#1d1512;margin:10px 0;padding:12px 14px}.diagram-label{margin:8px 0 6px!important;font-size:13px!important}.diagram-label.ok{color:var(--ok)!important}.diagram-label.bad{color:var(--danger)!important}.diagram-row{gap:6px;margin-bottom:4px;display:flex}.dg{color:#6d5f4e;width:30px;height:30px;font-size:14px;font-family:var(--font-display);background:#ffffff08;border:1px dashed #3d3025;border-radius:6px;justify-content:center;align-items:center;display:flex}.dg.piece{color:#4c3a22;background:radial-gradient(circle at 35% 30%,#efe0bd,#c8a670);border:0;border-radius:50%;font-weight:700}.dg.enemy{color:#8c2313;background:radial-gradient(circle at 35% 30%,#efd0c4,#c98268);border:0;border-radius:50%;font-weight:700}.hash-block{word-break:break-all;border:1px solid var(--line);color:#cdbf9f;-webkit-user-select:text;user-select:text;background:#16100d;border-radius:8px;margin:8px 0;padding:10px 12px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:12px;line-height:1.6;display:block}.muted{color:#8d7f6b!important}.layout-grid{grid-template-columns:repeat(8,1fr);gap:4px;margin:10px 0;display:grid}.layout-cell{aspect-ratio:1;font-family:var(--font-display);background:radial-gradient(circle at 35% 30%,#efe0bd,#c8a670);border-radius:50%;justify-content:center;align-items:center;font-size:clamp(11px,2.6vw,16px);font-weight:700;display:flex}.layout-cell.red{color:#a93322}.layout-cell.black{color:#2c2620}#fairness-result{min-height:1.4em;font-weight:700}#fairness-result.ok{color:var(--ok)}#fairness-result.bad{color:var(--danger)}.gameover-subtitle{color:var(--accent)!important;font-size:15px!important}.gameover-stats{grid-template-columns:1fr 1fr;gap:10px;margin:18px 0 0;display:grid}.gameover-stats>div{border:1px solid var(--line);border-radius:var(--radius);background:#1d1512;padding:10px 12px}.gameover-stats dt{color:var(--ink-dim);margin:0 0 2px;font-size:12px}.gameover-stats dd{font-variant-numeric:tabular-nums;margin:0;font-size:20px;font-weight:700}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}@media (max-height:480px) and (orientation:landscape) and (max-width:1023px){#hud-captured{display:none}.hud-meta{flex-direction:row;align-items:center;gap:10px}}