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.gomoku-home{position:relative;min-height:calc(100vh - 64px);overflow:hidden;background:radial-gradient(circle at 72% 45%,rgba(9,105,218,.1),transparent 31%),linear-gradient(rgba(9,105,218,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(9,105,218,.035) 1px,transparent 1px),#fff;background-size:auto,42px 42px,42px 42px}.gomoku-home:before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,#fff 0,transparent 18%,transparent 80%,#fff 100%);pointer-events:none}.gomoku-stage{position:relative;z-index:1;display:grid;grid-template-columns:minmax(280px,.8fr) minmax(430px,560px);gap:72px;align-items:center;width:min(1120px,calc(100% - 48px));min-height:calc(100vh - 64px);margin:auto;padding:54px 0}.gomoku-intro>p{margin:0 0 12px;color:var(--accent);font:600 12px/1.5 ui-monospace,monospace;letter-spacing:.18em}.gomoku-intro h1{margin:0 0 22px;font-size:clamp(52px,7vw,86px);line-height:.98;letter-spacing:-.06em}.gomoku-intro>span{display:block;max-width:430px;color:var(--muted);font-size:18px;line-height:1.8}.match-feed{display:flex;align-items:center;gap:10px;width:max-content;max-width:100%;margin-top:28px;padding:9px 13px;border:1px solid var(--border);border-radius:999px;background:rgba(255,255,255,.78);color:var(--muted);font:12px/1.4 ui-monospace,monospace;box-shadow:0 4px 14px rgba(31,35,40,.06)}.match-feed i{width:7px;height:7px;flex:none;border-radius:50%;background:#2da44e;box-shadow:0 0 0 4px rgba(45,164,78,.13);animation:live-pulse 1.4s infinite}.match-feed b{overflow:hidden;font-weight:500;text-overflow:ellipsis;white-space:nowrap}.gomoku-arena{padding:0 24px 24px;border:1px solid var(--border);border-radius:18px;background:rgba(255,255,255,.92);box-shadow:0 28px 80px rgba(31,35,40,.16);transition:opacity .45s,transform .45s}.gomoku-arena[data-phase="resetting"]{opacity:.12;transform:scale(.97)}.gomoku-arena>header{display:flex;align-items:center;justify-content:space-between;height:48px;margin:0 -24px 17px;padding:0 18px;border-bottom:1px solid var(--border);color:var(--muted);font:10px/1 ui-monospace,monospace;letter-spacing:.12em}.gomoku-arena>header b{display:flex;align-items:center;gap:6px;color:#1a7f37}.gomoku-arena>header b:before{content:"";width:6px;height:6px;border-radius:50%;background:#2da44e}.ai-player{display:flex;align-items:center;gap:11px;min-height:45px}.ai-player>div{display:flex;min-width:0;flex-direction:column}.ai-player>div>b{font:700 13px/1.4 ui-monospace,monospace}.ai-player small{color:var(--muted);font:9px/1.5 ui-monospace,monospace;letter-spacing:.1em}.ai-avatar{display:grid;place-items:center;width:36px;height:36px;flex:none;border-radius:9px;font:700 10px/1 ui-monospace,monospace}.ai-avatar.black{background:#24292f;color:#fff}.ai-avatar.white{border:1px solid var(--border);background:#fff;color:#24292f}.ai-player>strong{margin-left:auto;padding:4px 9px;border-radius:999px;font:800 11px/1.4 ui-monospace,monospace;letter-spacing:.08em;opacity:0;transform:translateX(8px);transition:.4s .2s}.ai-one>strong{background:#dafbe1;color:#1a7f37}.ai-two>strong{background:#ffebe9;color:#cf222e}.gomoku-arena[data-phase="finished"] .ai-player>strong{opacity:1;transform:none}.gomoku-board-wrap{padding:12px 0}.gomoku-board{position:relative;width:min(100%,380px);aspect-ratio:1;margin:auto;border:12px solid #d5a458;border-radius:5px;background-color:#e8bc73;background-image:linear-gradient(#855b2a 1px,transparent 1px),linear-gradient(90deg,#855b2a 1px,transparent 1px);background-position:0 0;background-size:12.5% 12.5%;box-shadow:inset 0 0 20px rgba(95,55,15,.12),0 8px 20px rgba(80,47,15,.16)}.gomoku-board:before{content:"";position:absolute;inset:-5px;border:1px solid rgba(91,54,20,.35);pointer-events:none}.gomoku-stone{position:absolute;z-index:2;left:calc(var(--x)*12.5%);top:calc(var(--y)*12.5%);width:9.3%;aspect-ratio:1;border-radius:50%;opacity:0;transform:translate(-50%,-50%) scale(.25);transition:opacity .24s,transform .34s cubic-bezier(.2,1.55,.45,1)}.gomoku-stone.placed{opacity:1;transform:translate(-50%,-50%) scale(1)}.gomoku-stone.black{background:radial-gradient(circle at 32% 28%,#6e7681 0,#24292f 35%,#090c10 76%);box-shadow:0 3px 5px rgba(0,0,0,.32)}.gomoku-stone.white{border:1px solid rgba(87,96,106,.24);background:radial-gradient(circle at 32% 28%,#fff 0,#f6f8fa 44%,#c9d1d9 100%);box-shadow:0 3px 5px rgba(0,0,0,.2)}.winning-line{position:absolute;z-index:3;left:23.5%;top:23.5%;width:59%;height:3px;border-radius:4px;background:#cf222e;box-shadow:0 0 0 3px rgba(207,34,46,.13);opacity:0;transform:rotate(45deg) scaleX(0);transform-origin:left center;transition:opacity .25s,transform .55s .15s}.gomoku-arena[data-phase="finished"] .winning-line{opacity:1;transform:rotate(45deg) scaleX(1)}
@keyframes live-pulse{50%{opacity:.45;transform:scale(.8)}}
@media(max-width:900px){.gomoku-stage{display:flex;min-height:calc(100vh - 64px);padding:42px 0;flex-direction:column;justify-content:center;gap:34px}.gomoku-intro{text-align:center}.gomoku-intro h1{font-size:52px}.gomoku-intro>span{font-size:15px}.match-feed{margin:24px auto 0}.gomoku-arena{width:100%;max-width:520px}}
@media(max-width:520px){.gomoku-stage{width:calc(100% - 28px);padding:30px 0}.gomoku-intro h1{font-size:42px}.gomoku-arena{padding:0 14px 16px;border-radius:14px}.gomoku-arena>header{margin:0 -14px 12px}.gomoku-board{border-width:9px}.ai-player{min-height:40px}.ai-avatar{width:32px;height:32px}}
@media(prefers-reduced-motion:reduce){.match-feed i{animation:none}.gomoku-arena,.gomoku-stone,.ai-player>strong,.winning-line{transition:none}}
.home-page footer{display:flex}.gomoku-home{display:grid;min-height:0;flex:1;place-items:center;padding:32px 0}.gomoku-only{width:min(72vmin,460px);transition:opacity .45s,transform .45s}.gomoku-only .gomoku-board{width:100%}.gomoku-only[data-phase="resetting"]{opacity:.1;transform:scale(.97)}.gomoku-only[data-phase="finished"] .winning-line{opacity:1;transform:rotate(var(--angle,45deg)) scaleX(1)}.gomoku-thinking{position:absolute;z-index:4;left:50%;top:4%;display:flex;width:max-content;max-width:86%;padding:8px 11px;border:1px solid rgba(255,255,255,.18);border-radius:8px;background:rgba(13,17,23,.82);box-shadow:0 5px 18px rgba(0,0,0,.22);color:#c9d1d9;font:9px/1.45 ui-monospace,monospace;transform:translateX(-50%);flex-direction:column;pointer-events:none}.gomoku-thinking b{color:#58a6ff;font-size:10px;letter-spacing:.08em}.gomoku-thinking span:last-child{color:#8b949e}.gomoku-thinking[hidden]{display:none}.gomoku-result{position:absolute;z-index:5;left:50%;top:50%;display:flex;align-items:center;gap:8px;padding:10px 16px;border:1px solid rgba(255,255,255,.2);border-radius:999px;background:rgba(13,17,23,.88);box-shadow:0 8px 30px rgba(0,0,0,.28);color:#fff;font:800 13px/1 ui-monospace,monospace;letter-spacing:.1em;opacity:0;transform:translate(-50%,-50%) scale(.8);transition:opacity .35s .35s,transform .35s .35s;white-space:nowrap}.gomoku-result:empty{display:none}.gomoku-result b{color:#56d364}.gomoku-result strong{color:#ff7b72}.gomoku-result i{color:#8b949e;font-style:normal}.gomoku-only[data-phase="finished"] .gomoku-result{opacity:1;transform:translate(-50%,-50%) scale(1)}
@media(max-width:600px){.gomoku-only{width:min(86vw,520px)}}
@media(prefers-reduced-motion:reduce){.gomoku-only,.gomoku-result{transition:none}}
.gomoku-only{display:grid;grid-template-columns:180px minmax(300px,460px) 180px;gap:24px;align-items:center;justify-content:center;width:min(916px,calc(100vw - 48px))}.gomoku-only .gomoku-board{grid-column:2}.ai-stats{padding:20px 18px;border:1px solid var(--border);border-radius:14px;background:rgba(255,255,255,.88);box-shadow:0 12px 36px rgba(31,35,40,.09);color:var(--muted);transition:border-color .25s,box-shadow .25s,transform .25s}.ai-stats-one{grid-column:1;grid-row:1}.ai-stats-two{grid-column:3;grid-row:1}.ai-stats.active{border-color:#54aeff;box-shadow:0 14px 42px rgba(9,105,218,.16);transform:translateY(-3px)}.ai-icon{width:38px;height:38px;margin-bottom:12px;padding:8px;border-radius:10px;background:var(--accent-soft);color:var(--accent)}.ai-stats-two .ai-icon{background:#fff1e5;color:#bc4c00}.ai-stats h2{margin:0;color:var(--text);font:700 15px/1.4 ui-monospace,monospace}.ai-stats small{display:block;margin-top:2px;font:9px/1.4 ui-monospace,monospace;letter-spacing:.08em}.ai-stats dl{display:grid;gap:9px;margin:18px 0 0}.ai-stats dl div{display:flex;align-items:baseline;justify-content:space-between;gap:10px;padding-top:8px;border-top:1px solid var(--border)}.ai-stats dt{font-size:11px}.ai-stats dd{margin:0;color:var(--text);font:700 11px/1 ui-monospace,monospace}.ai-stats.active h2:after{content:" · THINKING";color:var(--accent);font-size:9px;animation:live-pulse 1s infinite}
@media(max-width:920px){.gomoku-only{grid-template-columns:minmax(68px,120px) minmax(150px,460px) minmax(68px,120px);width:calc(100vw - 12px);gap:6px}.gomoku-only .gomoku-board{grid-column:2;grid-row:1}.ai-stats-one{grid-column:1;grid-row:1}.ai-stats-two{grid-column:3;grid-row:1}.ai-stats{min-width:0;padding:10px 7px;border-radius:9px}.ai-icon{display:block;width:26px;height:26px;margin:0 0 7px;padding:5px}.ai-stats h2{font-size:11px}.ai-stats small{overflow:hidden;margin:0;font-size:7px;text-overflow:ellipsis;white-space:nowrap}.ai-stats dl{display:block;margin-top:10px}.ai-stats dl div{display:block;padding:5px 0}.ai-stats dt{font-size:8px;line-height:1.25}.ai-stats dd{overflow:hidden;margin-top:3px;font-size:9px;text-overflow:ellipsis}.ai-stats.active h2:after{display:block;margin-top:2px;font-size:7px}}