:root{color-scheme:dark;--bg:#111812;--panel:#1b241c;--line:#344034;--green:#c5f277;--text:#eef2e9;--muted:#94a18e;--mono:ui-monospace,SFMono-Regular,Consolas,monospace}*{box-sizing:border-box}body{margin:0;min-width:300px;background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}button,input{font:inherit}button{cursor:pointer;-webkit-tap-highlight-color:transparent}button:disabled{cursor:default;opacity:.45}button:focus-visible,input:focus-visible,a:focus-visible{outline:3px solid var(--green);outline-offset:4px}[hidden]{display:none!important}::selection{background:var(--green);color:var(--bg)}.shell{width:min(1090px,calc(100% - 64px));margin:auto}.topbar{height:88px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}.brand{display:flex;align-items:center;gap:9px;color:var(--text);text-decoration:none;font:700 15px var(--mono);letter-spacing:1.2px}.brand>span:last-child{color:#82947c;font-weight:400}.brand-mark{display:grid;grid-template-columns:repeat(2,8px);gap:4px;background:var(--green);padding:6px;border-radius:5px;margin-right:4px}.brand-mark i{border-radius:50%;width:8px;height:8px;background:#25351d}.brand-mark i:nth-child(2),.brand-mark i:nth-child(3){background:#8db34e}.connection{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:11px}.connection:before{content:"";width:6px;height:6px;border-radius:50%;background:#dfae70}.connection.connected:before{background:var(--green)}.intro{padding:39px 0 30px;display:flex;justify-content:space-between;align-items:flex-end}.eyebrow,.panel-eyebrow{font:10px var(--mono);letter-spacing:1.7px;color:var(--green);margin:0 0 13px}h1{margin:0 0 12px;font-size:43px;letter-spacing:-1px;line-height:1.2}h1 span{display:inline-block;font-size:14px;letter-spacing:2px;font-weight:400;color:var(--muted);margin-left:17px;vertical-align:middle}.subtitle{margin:0;font-size:14px;color:var(--muted)}.intro-aside{font-size:11px;line-height:1.9;color:#7f8e78;text-align:right;padding-bottom:2px}.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}.game-card{border:1px solid var(--line);background:var(--panel);padding:17px;border-radius:17px}.board-toolbar{display:flex;justify-content:space-between;align-items:center;padding:1px 4px 15px;color:var(--muted);font-size:11px}.board-toolbar>span:last-child{font:10px var(--mono);letter-spacing:.5px}.board-state{display:flex;align-items:center;gap:7px}.board-state:before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}.board-state.your-turn{color:var(--green)}.board-frame{background:#c7ac7c;border:1px solid #d4b989;border-radius:9px;padding:13px 18px 20px 8px;display:grid;grid-template-columns:20px minmax(0,1fr);grid-template-rows:19px minmax(0,1fr);position:relative;color:#806b46;overflow:hidden;background-image:repeating-linear-gradient(6deg,transparent,transparent 4px,rgba(108,78,30,.025) 5px,transparent 7px)}.column-labels{grid-column:2;display:grid;grid-template-columns:repeat(15,1fr);align-items:start;text-align:center;font:9px var(--mono)}.row-labels{grid-row:2;display:grid;grid-template-rows:repeat(15,1fr);align-items:center;text-align:center;font:9px var(--mono)}.board{grid-column:2;grid-row:2;display:grid;grid-template-columns:repeat(15,1fr);aspect-ratio:1;position:relative}.cell{position:relative;aspect-ratio:1;border:0;padding:0;min-width:0;background:transparent;touch-action:manipulation;isolation:isolate;cursor:default}.cell:before,.cell:after{content:"";position:absolute;background:#927747;z-index:-1;pointer-events:none}.cell:before{height:1px;top:50%;left:0;right:0}.cell:after{width:1px;left:50%;top:0;bottom:0}.cell:nth-child(15n + 1):before{left:50%}.cell:nth-child(15n):before{right:50%}.cell:nth-child(-n + 15):after{top:50%}.cell:nth-child(n + 211):after{bottom:50%}.cell:focus-visible{outline:2px solid #385c27;outline-offset:-2px;border-radius:3px;z-index:1}.star{position:absolute;width:5px;height:5px;border-radius:50%;background:#735d36;left:50%;top:50%;transform:translate(-50%,-50%);z-index:-1}.stone{position:absolute;inset:9%;border-radius:50%;display:none;pointer-events:none}.cell[data-value="1"] .stone{display:block;background:radial-gradient(circle at 34% 25%,#4b514c 0,#212621 43%,#121712 100%);box-shadow:0 2px 3px #5e4a3b70,inset 0 -1px 2px #080c08}.cell[data-value="2"] .stone{display:block;background:radial-gradient(circle at 33% 23%,#fff 0,#f1f0e8 57%,#cccbbf 100%);box-shadow:0 2px 3px #66512e6b,inset 0 -1px 2px #a4a899}.cell.last .stone:after{content:"";position:absolute;width:17%;height:17%;border-radius:50%;top:41.5%;left:41.5%;background:#e5a078}.cell[data-value="2"].last .stone:after{background:#5e7941}.cell.winning .stone{outline:3px solid #6b973d;outline-offset:1px}.board.playable .cell[data-value="0"]{cursor:pointer}@media(hover:hover){.board.playable .cell[data-value="0"]:hover .stone{display:block;background:#344c2c;opacity:.3;box-shadow:none}}.welcome{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#c7ac7ce8;color:#35462b;text-align:center;padding:12px}.welcome-stones{display:flex;gap:12px;margin-bottom:20px}.welcome-stones i{width:39px;height:39px;border-radius:50%;background:radial-gradient(circle at 30% 20%,#50584d,#1c241a 60%);box-shadow:1px 3px 5px #79613d5c}.welcome-stones i+ i{background:radial-gradient(circle at 30% 20%,#fff,#e3e3d4 80%)}.welcome h2{font-size:26px;margin:0 0 13px;font-weight:700}.welcome p{font-size:12px;line-height:2;color:#5b674c;margin:0}.welcome-label{margin-top:24px;font-size:10px;color:#64704f;letter-spacing:1px}.board-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:10px;color:#8f9d86;padding:17px 3px 1px}.board-footer span:first-child{display:flex;align-items:center;gap:6px}.last-dot{width:5px;height:5px;border-radius:50%;background:#e5a078}.side{display:grid;gap:20px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px}.panel h2{font-size:21px;font-weight:600;letter-spacing:.5px;margin:0 0 25px}.panel label{display:block;font-size:12px;color:#b6c2ad;margin-bottom:10px}.panel label span{font-size:10px;color:#71816b;margin-left:6px}input{min-width:0;width:100%;border:1px solid #405039;border-radius:8px;padding:12px;color:var(--text);background:#121b13;font-size:13px;outline-offset:2px}input::placeholder{color:#788671}.primary,.secondary{border:1px solid var(--green);border-radius:8px;min-height:43px;padding:10px 17px;font-size:13px;font-weight:600;transition:background .15s}.primary{background:var(--green);color:#203012}.primary:hover:not(:disabled){background:#d6ff9d}.secondary{background:transparent;border-color:#46573e;color:#d5dfcc}.secondary:hover:not(:disabled){background:#2a3925}.lobby>.primary{display:flex;justify-content:space-between;align-items:center;margin-top:13px;width:100%}.divider{display:flex;align-items:center;gap:8px;color:#83907c;font-size:10px;margin:22px 0 17px}.divider:before,.divider:after{content:"";height:1px;background:var(--line);flex:1}.divider span{white-space:nowrap}.join-row{display:flex;gap:8px}.join-row input{text-transform:uppercase;letter-spacing:1px;font:13px var(--mono)}.join-row input::placeholder{font:11px sans-serif;letter-spacing:0}.join-row button{flex-shrink:0;padding:10px 15px}.invite-hint{font-size:10px;color:#7d8e74;line-height:1.8;margin:13px 0 0}.rules{display:flex;gap:13px;padding:2px 10px}.rules-icon{font-size:13px;width:28px;height:28px;border:1px solid #46513a;border-radius:7px;display:grid;place-items:center;color:#a9bb92;flex-shrink:0}.rules h3{font-size:12px;font-weight:500;margin:4px 0 12px;color:#c9d4bd}.rules p{font-size:11px;line-height:1.95;color:#829479;margin:0 0 10px}.room-heading{display:flex;justify-content:space-between;align-items:start;gap:8px}.room-heading .panel-eyebrow{margin-bottom:14px}.text-button,.code-button{border:0;background:none;color:#91a385;padding:0;font-size:10px}.text-button:hover,.code-button:hover{color:var(--green)}.room-code-line{display:flex;align-items:center;justify-content:space-between;margin-bottom:15px}.room-code-line strong{font:500 30px var(--mono);letter-spacing:3px;color:var(--green)}.code-button{border:1px solid #405336;border-radius:5px;padding:4px 7px}.invite-button{border:1px dashed #526f3b;background:#283421;color:#d1ebac;border-radius:8px;padding:11px;width:100%;font-size:12px}.invite-button:hover{background:#34442a}.players{display:grid;gap:15px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:21px 0;margin-top:22px}.player{display:flex;align-items:center;gap:10px;min-width:0}.player-stone{width:27px;height:27px;border-radius:50%;flex-shrink:0;box-shadow:0 2px 3px #0004;border:1px solid #535d4b}.player-stone.black{background:radial-gradient(circle at 30% 20%,#5a6258,#111a10 70%)}.player-stone.white{background:radial-gradient(circle at 30% 20%,#fff,#cdd3c4 90%)}.player-info{flex:1;min-width:0}.player-name{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#e2e9dc}.player-name small{font-size:9px;color:var(--green);padding-left:7px}.player-detail{color:#7c8f72;font-size:10px;margin-top:5px}.player-status{width:5px;height:5px;border-radius:50%;background:#718269}.player-status.online{background:var(--green)}.turn-panel{display:flex;gap:11px;align-items:center;min-height:91px;padding:20px 0}.turn-indicator{width:8px;height:8px;border-radius:50%;background:#8b997f;flex-shrink:0}.turn-panel.mine .turn-indicator{background:var(--green);box-shadow:0 0 0 4px #c5f27714}.turn-panel strong{font-size:14px;font-weight:600;color:#dce9ce}.turn-panel.mine strong{color:var(--green)}.turn-panel p{font-size:11px;color:#8da17d;line-height:1.7;margin:6px 0 0}.full{width:100%}.rematch-hint{font-size:10px;color:#9bb089;line-height:1.8;margin:11px 0 0}.share-fallback{margin-top:16px}.share-fallback label{font-size:10px}.share-fallback input{font-size:10px}.toast{position:fixed;left:50%;bottom:25px;transform:translateX(-50%);background:#2f4126;color:#e0f1ce;border:1px solid #637a4c;padding:12px 20px;border-radius:9px;max-width:calc(100% - 32px);width:max-content;font-size:12px;line-height:1.8;box-shadow:0 8px 30px #0004;z-index:5}footer{display:flex;justify-content:space-between;gap:10px;color:#718369;font:9px var(--mono);letter-spacing:.4px;padding:28px 0 32px}dialog{background:var(--panel);border:1px solid #546449;border-radius:16px;color:var(--text);padding:27px;max-width:min(380px,calc(100% - 32px))}dialog::backdrop{background:#070e09ba;backdrop-filter:blur(3px)}dialog h2{font-size:20px;margin:18px 0 12px}dialog p{font-size:13px;line-height:1.9;color:var(--muted);margin:0 0 22px}.dialog-symbol{width:34px;height:34px;border:1px solid #607449;display:grid;place-items:center;border-radius:50%;color:var(--green);font:20px var(--mono)}.dialog-actions{display:flex;gap:10px}.dialog-actions button{flex:1}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:780px){.shell{width:min(570px,calc(100% - 28px))}.topbar{height:72px}.brand{font-size:12px;letter-spacing:.7px;gap:6px}.brand-mark{grid-template-columns:repeat(2,6px);gap:3px;padding:5px}.brand-mark i{width:6px;height:6px}.connection{font-size:10px}.intro{padding:28px 0 24px}h1{font-size:33px}h1 span{font-size:11px;margin-left:12px}.subtitle{font-size:12px}.eyebrow{font-size:9px;letter-spacing:1px}.intro-aside{display:none}.layout{grid-template-columns:1fr;gap:16px}.game-card{padding:11px}.board-frame{padding:9px 12px 13px 3px;grid-template-columns:15px minmax(0,1fr);grid-template-rows:16px minmax(0,1fr)}.column-labels,.row-labels{font-size:8px}.board-footer{font-size:9px;padding-top:13px}.side{order:-1;gap:0}.panel{padding:19px}.lobby .panel-eyebrow{margin-bottom:9px}.lobby h2{font-size:19px;margin-bottom:17px}.lobby label{margin-bottom:7px}.lobby>.primary{margin-top:10px}.divider{margin:16px 0 13px}.invite-hint{margin-top:9px}.rules{display:none}.room-panel{display:grid;grid-template-columns:1fr 1fr;column-gap:20px;padding:16px 18px}.room-heading{grid-column:1/-1}.room-heading .panel-eyebrow{margin-bottom:9px}.room-code-line{margin:0 0 10px}.room-code-line strong{font-size:24px;letter-spacing:2px}.code-button{margin-left:5px;font-size:9px}.invite-button{grid-column:1;grid-row:3;font-size:10px;padding:9px}.players{grid-column:2;grid-row:2/4;margin:0;padding:0 0 0 17px;border:0;border-left:1px solid var(--line);gap:12px}.player{gap:7px}.player-stone{width:22px;height:22px}.player-name{font-size:11px}.player-name small{padding-left:4px;font-size:8px}.player-detail{font-size:9px;margin-top:4px}.turn-panel{grid-column:1/-1;min-height:0;margin-top:15px;padding:13px 0;border-top:1px solid var(--line)}.turn-panel strong{font-size:13px}.turn-panel p{font-size:10px;margin-top:4px}.room-panel>.full{grid-column:1/-1;min-height:37px;font-size:11px}.rematch-hint,.share-fallback{grid-column:1/-1}.welcome h2{font-size:22px}.welcome p{font-size:11px}.welcome-stones{margin-bottom:14px}.welcome-stones i{width:32px;height:32px}.welcome-label{margin-top:16px;font-size:9px}footer{font-size:8px;flex-wrap:wrap;padding:20px 0 24px}.cell.winning .stone{outline-width:2px;outline-offset:0}.star{width:4px;height:4px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}dialog::backdrop{backdrop-filter:none}}