:root{--board-size: min(620px, calc(100dvh - 212px) , 92vw);--light-sq: #dbe2ee;--dark-sq: #7e8ea9;--bg: #07090f;--glass: rgba(255, 255, 255, .05);--glass-strong: rgba(255, 255, 255, .08);--glass-border: rgba(255, 255, 255, .1);--text: #eef1f7;--text-dim: #8b93a7;--accent-1: #8b5cf6;--accent-2: #22d3ee;--gold: #fbbf24;--danger: #f87171;--font-display: "Space Grotesk", "Inter", sans-serif;--surface: linear-gradient( 160deg, rgba(255, 255, 255, .085), rgba(255, 255, 255, .028) 40%, rgba(255, 255, 255, .012) );--line: rgba(255, 255, 255, .09);--line-bright: rgba(255, 255, 255, .18);--card-shadow: inset 0 1px 0 rgba(255, 255, 255, .08), 0 18px 48px rgba(0, 0, 0, .42);--card-shadow-hover: inset 0 1px 0 rgba(255, 255, 255, .1), 0 24px 64px rgba(0, 0, 0, .52), 0 0 44px rgba(139, 92, 246, .09)}*{box-sizing:border-box}button{touch-action:manipulation}html,body{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,sans-serif}h1,h2,h3,h4{font-family:var(--font-display)}.overline{font-size:11px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--text-dim)}.app{position:relative;height:100dvh;overflow:auto;display:flex;align-items:center;justify-content:center;padding:18px 22px;background:radial-gradient(ellipse 80% 60% at 70% -10%,rgba(139,92,246,.14),transparent 60%),radial-gradient(ellipse 70% 50% at 10% 110%,rgba(34,211,238,.1),transparent 60%),var(--bg)}.orb{position:fixed;border-radius:50%;filter:blur(90px);opacity:.55;pointer-events:none;z-index:0}.orb-1{width:420px;height:420px;top:-140px;right:-80px;background:radial-gradient(circle,rgba(139,92,246,.35),transparent 70%);animation:drift 18s ease-in-out infinite alternate}.orb-2{width:380px;height:380px;bottom:-120px;left:-100px;background:radial-gradient(circle,rgba(34,211,238,.28),transparent 70%);animation:drift 22s ease-in-out infinite alternate-reverse}.orb-3{width:260px;height:260px;top:40%;left:55%;background:radial-gradient(circle,rgba(251,191,36,.12),transparent 70%);animation:drift 26s ease-in-out infinite alternate}@keyframes drift{0%{transform:translate(0) scale(1)}to{transform:translate(60px,40px) scale(1.15)}}@keyframes rise{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes pop-in{0%{transform:scale(.85);opacity:0}to{transform:scale(1);opacity:1}}.home{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:30px;width:min(880px,100%);padding:46px 0 28px;animation:rise .5s ease-out}.home-hero{text-align:center}.home-crest{font-size:40px;margin-bottom:8px;filter:drop-shadow(0 0 18px rgba(139,92,246,.6))}.home-title{margin:0;font-family:var(--font-display);font-size:clamp(38px,7vw,60px);font-weight:700;letter-spacing:clamp(2px,.09em,6px);text-indent:clamp(2px,.09em,6px);white-space:nowrap;text-transform:uppercase;background:linear-gradient(95deg,var(--accent-2),var(--accent-1),var(--gold));background-size:200% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shimmer 6s ease-in-out infinite alternate}@keyframes shimmer{0%{background-position:0% 50%}to{background-position:100% 50%}}.home-tag{margin:10px 0 0;color:var(--text-dim);font-size:15px;letter-spacing:.01em}.home-error{padding:10px 18px;border-radius:12px;background:#f871711f;border:1px solid rgba(248,113,113,.4);color:var(--danger);font-size:14px;font-weight:600}.card{position:relative;display:flex;flex-direction:column;gap:12px;padding:24px 24px 22px;border-radius:20px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--card-shadow);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;overflow:hidden}.card:before{content:"";position:absolute;inset:0 12% auto;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);pointer-events:none}.card:hover{transform:translateY(-3px);border-color:#8b5cf666;box-shadow:var(--card-shadow-hover)}.card-head{display:flex;align-items:center;gap:12px}.card-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;font-size:20px;background:linear-gradient(160deg,#8b5cf633,#8b5cf60f);border:1px solid rgba(139,92,246,.28);box-shadow:inset 0 1px #ffffff1a}.card h2{margin:0;font-size:19px;font-weight:700;letter-spacing:.01em}.card p{margin:0;color:var(--text-dim);font-size:13.5px;line-height:1.55;flex:1}.card-note{font-size:12px;color:var(--text-dim)}.arena{display:flex;flex-direction:column;gap:18px;width:100%}.card-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;width:100%}@media (max-width: 860px){.card-row{grid-template-columns:1fr}}.card-featured{flex-direction:row;align-items:center;gap:30px;width:100%;padding:30px 34px;border:1px solid transparent;background:linear-gradient(150deg,#201b3af0,#0d101eeb) padding-box,linear-gradient(120deg,#fbbf2480,#8b5cf68c 45%,#22d3ee59) border-box}.card-featured:after{content:"♞";position:absolute;right:-10px;bottom:-44px;font-size:200px;line-height:1;color:#8b5cf61f;text-shadow:0 0 70px rgba(139,92,246,.3);transform:rotate(-8deg);pointer-events:none}.card-featured:hover{border-color:transparent}.card-featured .card-icon{background:linear-gradient(160deg,#fbbf2438,#fbbf240d);border-color:#fbbf2459}.featured-copy{position:relative;z-index:1;flex:1;min-width:220px;display:flex;flex-direction:column;gap:12px}.featured-cta{position:relative;z-index:1;display:flex;flex-direction:column;gap:12px;min-width:220px}.featured-cta .btn{padding:14px 18px;font-size:15px}.rating-strip{display:flex;gap:22px;padding:12px 16px;border-radius:14px;background:#00000047;border:1px solid var(--line);box-shadow:inset 0 1px #ffffff0d}.rating-strip .rs-cell{display:flex;flex-direction:column;gap:2px}.rating-strip .rs-val{font-family:var(--font-display);font-size:21px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--gold);line-height:1.1}.rating-strip .rs-cell:not(:first-child) .rs-val{color:var(--text)}.rating-strip .rs-label{font-size:10px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--text-dim)}@media (max-width: 720px){.card-featured{flex-direction:column;align-items:stretch}}.join-row,.ai-levels{display:flex;gap:8px}.ai-levels .btn{padding:11px 6px;font-size:13px}.join-input{flex:1;min-width:0;padding:10px 12px;border-radius:12px;border:1px solid var(--line);background:#0000004d;color:var(--text);font-family:var(--font-display);font-size:18px;font-weight:700;letter-spacing:4px;text-transform:uppercase;text-align:center;outline:none;box-shadow:inset 0 2px 6px #0000004d;transition:border-color .15s,box-shadow .15s}.join-input:focus{border-color:#22d3ee99;box-shadow:inset 0 2px 6px #0000004d,0 0 0 3px #22d3ee1f}.link-btn{background:none;border:none;color:var(--text-dim);font-family:inherit;font-size:14px;font-weight:600;text-decoration:underline;text-underline-offset:4px;cursor:pointer}.link-btn:hover{color:var(--text)}.rules-card{width:min(600px,94vw);max-height:92dvh;overflow-y:auto;text-align:left;display:flex;flex-direction:column;gap:10px;padding:26px 28px 24px}.rules-card>.btn{align-self:stretch;margin-top:8px}.rules-title{margin:2px 0 8px;font-size:24px;letter-spacing:.01em}.rule{display:flex;align-items:center;gap:18px;padding:14px 16px;border-radius:14px;background:#ffffff08;border:1px solid var(--line);box-shadow:inset 0 1px #ffffff0a}.rule-stack{flex-direction:column;align-items:stretch;gap:12px}.rule-visual{display:flex;align-items:center;gap:6px;flex:0 0 auto;min-width:150px;justify-content:center}.rule-copy{flex:1}.rule-copy h3{margin:0 0 4px;font-size:14.5px;letter-spacing:.02em}.rule-copy p{margin:0;font-size:13px;line-height:1.55;color:var(--text-dim)}.rule-copy b{color:var(--text)}.demo-cell{display:flex;flex-direction:column;align-items:center;gap:2px}.demo-piece{position:relative;width:42px;height:42px}.demo-piece-svg{width:100%;height:100%;display:block}.demo-badge{position:absolute;top:-3px;right:-5px;padding:0 5px;border-radius:8px;font-size:11px;font-weight:800;background:linear-gradient(135deg,var(--accent-2),#0e7490);color:#06222b;box-shadow:0 2px 8px #22d3ee66}.demo-badge.enemy{background:linear-gradient(135deg,var(--gold),#b45309);color:#241303;box-shadow:0 2px 8px #fbbf2473}.demo-cap{font-size:9.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text-dim);white-space:nowrap}.demo-sum{margin-left:6px;font-family:var(--font-display);font-size:15px;font-weight:700;color:var(--gold);white-space:nowrap}.demo-arrow{color:var(--text-dim);font-size:14px;margin:0 2px;padding-bottom:14px}.power-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}.power-cell{display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 4px 6px;border-radius:11px;background:#00000040;border:1px solid var(--line)}.power-cell .demo-piece-svg{width:30px;height:30px}.power-num{font-family:var(--font-display);font-size:14px;font-weight:700;color:var(--gold);font-variant-numeric:tabular-nums}.blitz-ring{width:52px;height:52px;display:block}.rules-footnote{margin:2px 4px 0;font-size:12.5px;line-height:1.5;color:var(--text-dim)}@media (max-width: 540px){.rule{flex-direction:column;align-items:flex-start}.rule-visual{align-self:center}.power-grid{grid-template-columns:repeat(3,1fr)}}.modal-overlay.page-modal{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;border-radius:0}.waiting{position:relative;z-index:1;animation:rise .4s ease-out}.waiting-card{position:relative;display:flex;flex-direction:column;align-items:center;gap:14px;padding:38px 52px;border-radius:22px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--card-shadow);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);overflow:hidden}.waiting-card:before{content:"";position:absolute;inset:0 12% auto;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);pointer-events:none}.waiting-code{font-family:Space Grotesk,sans-serif;font-size:64px;font-weight:700;letter-spacing:14px;padding-left:14px;background:linear-gradient(95deg,var(--accent-2),var(--accent-1));-webkit-background-clip:text;background-clip:text;color:transparent}.waiting-hint{display:flex;align-items:center;gap:10px;color:var(--text-dim);font-size:14px}.waiting-seat{font-size:13px;font-weight:600;color:var(--gold)}.spinner{width:14px;height:14px;border-radius:50%;border:2px solid rgba(255,255,255,.15);border-top-color:var(--accent-2);animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.game{position:relative;z-index:1;display:flex;align-items:center;justify-content:center;gap:30px;width:100%;height:100%;animation:rise .5s ease-out}.board-column{display:flex;flex-direction:column;justify-content:center;gap:10px;flex:0 0 auto}@media (max-width: 1020px){.app{height:auto;min-height:100dvh}.game{flex-wrap:wrap;height:auto}}.player-card{display:flex;align-items:center;gap:12px;width:calc(var(--board-size) + 24px);padding:8px 14px;border-radius:16px;background:var(--glass);border:1px solid var(--glass-border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);transition:border-color .25s,box-shadow .25s}.player-card.active{border-color:#22d3ee73;box-shadow:0 0 28px #22d3ee24}.player-card.in-danger{border-color:#f8717199;box-shadow:0 0 30px #f8717140;animation:danger-pulse 1s ease-in-out infinite}@keyframes danger-pulse{0%,to{box-shadow:0 0 22px #f871712e}50%{box-shadow:0 0 40px #f8717166}}.avatar{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;flex:0 0 auto}.avatar-piece{width:32px;height:32px;display:block}.avatar-white{background:linear-gradient(145deg,#f5f7fb,#c8d0e0);color:#1a2030}.avatar-black{background:linear-gradient(145deg,#2a3145,#12151f);color:#eef1f7;border:1px solid var(--glass-border)}.player-info{display:flex;flex-direction:column;gap:2px;flex:1;min-width:0}.player-name-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.player-name{font-weight:700;font-size:14px;letter-spacing:.3px;white-space:nowrap}.armor-chip{padding:1px 8px;border-radius:8px;font-size:12px;font-weight:800;background:linear-gradient(135deg,var(--accent-2),#0e7490);color:#06222b;white-space:nowrap}.armor-chip.unknown{background:#ffffff14;border:1px solid var(--glass-border);color:var(--text-dim)}.armor-chip .spotted{font-weight:600;color:var(--gold)}.ready-pill{padding:1px 8px;border-radius:8px;font-size:11px;font-weight:700;background:#7fe2a924;border:1px solid rgba(127,226,169,.4);color:#7fe2a9;white-space:nowrap}.ready-pill.waiting{background:#ffffff0f;border-color:var(--glass-border);color:var(--text-dim)}.ready-pill.gone{background:#f8717124;border-color:#f8717166;color:var(--danger)}.captured{display:flex;align-items:center;gap:1px;min-height:18px;white-space:nowrap;overflow:hidden}.captured-piece{width:19px;height:19px;flex:0 0 auto}.advantage{margin-left:6px;font-size:13px;font-weight:700;color:var(--accent-2)}.turn-indicator{display:flex;align-items:center;gap:7px;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:1px;color:var(--accent-2);white-space:nowrap}.turn-dot{width:8px;height:8px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 10px var(--accent-2);animation:pulse 1.4s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1);opacity:1}50%{transform:scale(.7);opacity:.5}}.turn-indicator.bolstering{color:var(--gold)}.turn-indicator.bolstering .turn-dot{background:var(--gold);box-shadow:0 0 10px var(--gold)}.countdown{position:relative;width:46px;height:46px;border-radius:50%;flex:0 0 auto;display:grid;place-items:center;background:conic-gradient(var(--danger) var(--pct),rgba(255,255,255,.08) var(--pct))}.countdown:before{content:"";position:absolute;top:4px;right:4px;bottom:4px;left:4px;border-radius:50%;background:#171b26}.countdown-num{position:relative;font-family:Space Grotesk,sans-serif;font-size:19px;font-weight:700;color:var(--danger)}.countdown.critical{animation:countdown-flash .5s ease-in-out infinite}@keyframes countdown-flash{0%,to{transform:scale(1)}50%{transform:scale(1.12)}}.bolster-float{position:absolute;top:22px;left:22px;right:22px;z-index:8;display:flex;align-items:center;gap:14px;padding:10px 14px;border-radius:14px;background:#0a0d16d1;border:1px solid rgba(251,191,36,.4);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 12px 40px #00000073;animation:rise .3s ease-out}.bolster-float.waiting-float{border-color:#22d3ee66}.bolster-info{flex:1;min-width:0}.bolster-title{font-weight:700;font-size:14px}.bolster-sub{font-size:12px;color:var(--text-dim);margin-top:2px}.bolster-clear{padding:0;border:none;background:none;color:var(--accent-2);font:inherit;font-size:12px;font-weight:700;cursor:pointer;text-decoration:underline;text-underline-offset:2px}.bolster-points{font-size:12px;font-weight:600;color:var(--text-dim);white-space:nowrap}.bolster-count{font-family:Space Grotesk,sans-serif;font-size:26px;font-weight:700;color:var(--gold);margin-right:2px}.bolster-float .btn{flex:0 0 auto;padding:9px 16px}.board-wrap{position:relative}.board-frame{padding:12px;border-radius:22px;background:linear-gradient(150deg,#ffffff17,#ffffff05);border:1px solid var(--glass-border);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 30px 80px #0000008c,0 0 70px #8b5cf61a;transition:box-shadow .3s,border-color .3s}.board-frame.danger{border-color:#f871718c;animation:board-danger 1s ease-in-out infinite}@keyframes board-danger{0%,to{box-shadow:0 30px 80px #0000008c,0 0 45px #f8717138}50%{box-shadow:0 30px 80px #0000008c,0 0 85px #f8717173}}.board{display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);width:var(--board-size);height:var(--board-size);border-radius:12px;overflow:hidden}.square{position:relative;display:flex;align-items:center;justify-content:center;border:none;padding:0;cursor:pointer;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none;transition:filter .12s}.square.light{background:var(--light-sq)}.square.dark{background:var(--dark-sq)}.square:hover{filter:brightness(1.06)}.square.bolsterable:hover{filter:brightness(1.18)}.square.bolsterable:hover .piece{transform:translateY(-3px) scale(1.06)}.piece{position:relative;z-index:2;width:84%;height:84%;-webkit-user-select:none;user-select:none;transition:transform .15s ease}.piece svg{width:100%;height:100%;display:block;filter:drop-shadow(0 3px 3px rgba(4,7,15,.4))}.square:hover .piece{transform:translateY(-2px) scale(1.04)}.piece-in{animation:piece-in .24s cubic-bezier(.34,1.56,.64,1)}@keyframes piece-in{0%{transform:scale(.55);opacity:.3}to{transform:scale(1);opacity:1}}.piece-shake{animation:shake .4s ease}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-9%)}40%{transform:translate(8%)}60%{transform:translate(-6%)}80%{transform:translate(4%)}}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:1;pointer-events:none}.overlay.last-move{background:#fbbf2461}.overlay.selected{background:#22d3ee66;box-shadow:inset 0 0 0 3px #22d3eebf}.overlay.premove{background:#fbbf2447;box-shadow:inset 0 0 0 3px #fbbf24b3}.square.drag-over{box-shadow:inset 0 0 0 3px #ffffffb3}.piece-dragging{opacity:.28}.drag-piece{position:fixed;z-index:200;transform:translate(-50%,-50%) scale(1.08);pointer-events:none;filter:drop-shadow(0 8px 14px rgba(0,0,0,.55))}.drag-piece svg{width:100%;height:100%;display:block}.overlay.check{background:radial-gradient(ellipse at center,#ef4444cc 15%,#ef444400 75%)}.armor-badge{position:absolute;top:4%;right:4%;z-index:4;padding:1px 5px;border-radius:8px;font-size:clamp(9px,calc(var(--board-size) / 8 * .19),13px);font-weight:800;background:linear-gradient(135deg,var(--accent-2),#0e7490);color:#06222b;box-shadow:0 2px 8px #22d3ee66;pointer-events:none;animation:badge-in .3s ease-out}.armor-badge.enemy{background:linear-gradient(135deg,var(--gold),#b45309);color:#241303;box-shadow:0 2px 8px #fbbf2473}.attack-badge{position:absolute;top:4%;left:4%;z-index:4;padding:1px 5px;border-radius:8px;font-size:clamp(9px,calc(var(--board-size) / 8 * .19),13px);font-weight:800;background:linear-gradient(135deg,#f87171,#b91c1c);color:#fff;box-shadow:0 2px 8px #f8717173;pointer-events:none;animation:badge-in .3s ease-out}@keyframes badge-in{0%{transform:scale(.4);opacity:0}to{transform:scale(1);opacity:1}}.hint{position:absolute;z-index:3;pointer-events:none}.hint.dot{top:50%;left:50%;width:28%;height:28%;transform:translate(-50%,-50%);border-radius:50%;background:#0f172a59}.hint.ring{top:4%;right:4%;bottom:4%;left:4%;border-radius:50%;border:calc(var(--board-size) / 8 * .08) solid rgba(248,113,113,.6)}.hint.attack{top:4%;right:4%;bottom:4%;left:4%;border-radius:50%;border:calc(var(--board-size) / 8 * .06) solid rgba(251,146,60,.75)}.hint.siege{top:4%;right:4%;bottom:4%;left:4%;border-radius:50%;border:calc(var(--board-size) / 8 * .05) dashed rgba(251,191,36,.85)}.hint.blocked{top:4%;right:4%;bottom:4%;left:4%;border-radius:50%;border:calc(var(--board-size) / 8 * .05) dashed rgba(148,163,184,.8)}.hint-tag{position:absolute;top:-8%;left:50%;transform:translate(-50%);padding:1px 6px;border-radius:7px;font-size:clamp(9px,calc(var(--board-size) / 8 * .17),12px);font-weight:800;background:#0a0c14cc;white-space:nowrap}.attack-tag{color:#fb923c}.siege-tag{color:var(--gold)}.blocked-tag{color:#94a3b8}.floater{position:absolute;top:12%;left:50%;z-index:6;font-weight:900;font-size:calc(var(--board-size) / 8 * .34);pointer-events:none;animation:floater 1s ease-out forwards}.floater-dmg{color:var(--gold);text-shadow:0 2px 8px rgba(0,0,0,.8)}.floater-kill{color:var(--danger);text-shadow:0 2px 8px rgba(0,0,0,.8)}@keyframes floater{0%{transform:translate(-50%) scale(.7);opacity:0}15%{transform:translate(-50%,-20%) scale(1.15);opacity:1}to{transform:translate(-50%,-140%) scale(1);opacity:0}}.coord{position:absolute;z-index:1;font-size:clamp(9px,calc(var(--board-size) / 8 * .18),13px);font-weight:700;pointer-events:none}.coord.rank{top:4px;left:5px}.coord.file{bottom:3px;right:6px}.coord.on-light{color:var(--dark-sq)}.coord.on-dark{color:var(--light-sq)}.modal-overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:10;display:flex;align-items:center;justify-content:center;background:#07090f8c;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-radius:22px;animation:fade-in .25s ease-out}.modal-card{position:relative;border:1px solid transparent;background:linear-gradient(165deg,#1c2034f0,#0d101cf5) padding-box,linear-gradient(150deg,#ffffff38,#ffffff0d 40%,#8b5cf640) border-box;border-radius:18px;padding:22px 28px;box-shadow:0 24px 80px #000000a6,inset 0 1px #ffffff0f;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);animation:pop-in .3s 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