:root{--wood-grain-top: #422517;--wood-grain-mid: #2e180d;--wood-grain-deep: #1c0e07;--wood-border: #4d2a19;--wood-bevel-light: rgba(255, 235, 215, .16);--wood-bevel-dark: rgba(0, 0, 0, .85);--pit-edge: #381f12;--pit-inner-top: #1b0f08;--pit-inner-mid: #120904;--pit-inner-deep: #070402;--brass-top: #dfba61;--brass-mid: #ad8228;--brass-deep: #6e4e16;--brass-highlight: #fff2b2;--seed-highlight: #6e5e54;--seed-body: #2b201a;--seed-shadow: #080503;--gold-accent: #e5a93b;--gold-glow: rgba(229, 169, 59, .4);--green-capture: #2ecc71;--red-loss: #e74c3c;--text-main: #f5ede2;--text-muted: #ab9888}*{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;height:100%;margin:0;padding:0;overflow:hidden;background:radial-gradient(circle at 50% 45%,#18100b,#0c0705 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6px;--surface: var(--walnut-900);--surface-hover: var(--walnut-800);--foreground: var(--ivory-100);--muted: var(--sand-400);--accent: var(--brass-400);--outline: color-mix(in srgb, var(--accent) 25%, transparent);--control-background: var(--surface);--control-foreground: var(--foreground);--control-border: var(--outline);--control-radius: var(--radius-control);--frame-separator: linear-gradient(90deg, transparent, var(--outline) 12%, var(--outline) 88%, transparent);--ease-out: cubic-bezier(.23, 1, .32, 1)}.game-header,.game-footer{position:relative;width:100%;max-width:1460px}.game-header:after,.game-footer:before{content:none}.game-header:after{bottom:0}.game-footer:before{top:0}.game-footer{flex-shrink:0;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:var(--space-3);padding:var(--space-3) 0 var(--space-1)}.footer-signature{grid-column:2;display:flex;align-items:center;justify-content:center;gap:var(--space-3)}.footer-signature p{color:var(--muted);font-size:11px;line-height:1.4}.game-header{display:grid;grid-template-columns:44px minmax(0,1fr) 44px;align-items:start;gap:var(--space-3);height:auto;min-height:44px;padding:var(--space-2) 0}.header-left,.header-right{width:44px;height:44px}.brand-block{flex-direction:column;align-items:center;gap:var(--space-1);min-width:0}.header-pill{border:1px solid var(--control-border);background:var(--control-background);border-radius:var(--control-radius);min-height:44px}.status-pill{width:min(620px,100%);min-width:0}.status-line{display:flex;min-height:42px;align-items:center;gap:var(--space-2);padding-left:42px}.board-status{flex:1;color:var(--foreground);font-size:13px;line-height:1.4;padding:5px 0}.btn-floating-menu{width:44px;height:44px;background:var(--control-background);color:var(--accent);border:1px solid var(--control-border)}.btn-floating-menu:hover{transform:none;background:var(--surface-hover)}.btn,.btn-primary,.btn-floating-menu,.btn-icon-close,.tab-btn,.select-input,.player-pill,.btn-toggle-group,.turn-choice-panel,.player-avatar,.seed-count-badge,.dir-btn{border-radius:var(--control-radius)}button,input,select{font-family:inherit}button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}button:disabled{opacity:.4;cursor:not-allowed}.turn-controls{padding:0}.direction-badge-container{top:-4px;right:-4px;bottom:-4px;left:-4px}.direction-badge-container .dir-btn{width:clamp(24px,2.2vw,28px);height:clamp(28px,2.6vw,32px);border-radius:999px;border:1px solid rgba(226,204,167,.55);background:#1e1812f2;color:#f0d6a6;font-size:10px;font-weight:500;box-shadow:0 2px 5px #0005;transition:background-color .12s ease,border-color .12s ease}.direction-badge-container .dir-btn:hover:not(:disabled){transform:none;background:#493b29;border-color:#f0d6a6;color:#fff4df}.direction-badge-container .dir-btn:disabled{opacity:.18;box-shadow:none}.direction-badge-container .dir-btn:focus-visible{outline:2px solid #f0d6a6;outline-offset:2px}.turn-choice-panel{display:flex;justify-content:center;flex-wrap:wrap;gap:var(--space-2);width:100%;max-width:none;border:0;padding:0 var(--space-3) var(--space-3);background:none;box-shadow:none}.turn-choice-panel button{min-height:36px;padding:var(--space-2) var(--space-4);font:500 13px var(--app-font);border:1px solid var(--outline);cursor:pointer}.turn-choice-panel button+button{margin:0}#btn-retry-ai{margin:0 auto var(--space-2);text-align:center}.victory-toast{position:fixed;z-index:70;inset:50% auto auto 50%;width:min(420px,calc(100dvw - 32px));padding:28px 28px 24px;display:grid;justify-items:center;gap:var(--space-4);color:var(--foreground);text-align:center;background:color-mix(in srgb,var(--walnut-900) 96%,black);border-radius:14px;box-shadow:0 20px 60px #07040294,0 4px 14px #0704025c;transform:translate(-50%,-50%);animation:victory-arrive .28s var(--ease-out) both}.victory-message{max-width:30ch;font-size:clamp(20px,4vw,28px);line-height:1.2;font-weight:600;text-wrap:balance}.victory-toast .btn{min-height:44px;min-width:150px}.victory-inzo{display:flex;align-items:center;gap:7px;height:18px}.victory-inzo span{width:13px;height:16px;border-radius:48% 52% 45% 55%;background:linear-gradient(145deg,#766153,#2b201a 62%,#100b08);box-shadow:inset 2px 2px 3px #ffffff29,0 3px 5px #00000073;transform:rotate(-12deg)}.victory-inzo span:nth-child(2){transform:translateY(-4px) rotate(9deg)}.victory-inzo span:nth-child(3){transform:rotate(18deg)}@keyframes victory-arrive{0%{opacity:0;transform:translate(-50%,calc(-50% + 12px)) scale(.96)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}@media(prefers-reduced-motion:reduce){.victory-toast{animation:victory-fade .16s ease both}@keyframes victory-fade{0%{opacity:0}to{opacity:1}}}.header-guide{border-top:1px solid var(--outline);padding:var(--space-3);max-height:min(52dvh,400px);overflow-y:auto;text-align:left;-webkit-user-select:text;user-select:text}.guide-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-2)}.guide-heading h2{font-size:15px;font-weight:500}.rules-nav-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--space-1);padding:0;margin-bottom:var(--space-3)}.tab-btn{padding:9px 3px;font-size:12px;min-width:0;white-space:normal;border:1px solid transparent}.tab-btn.active{border-color:var(--outline);background:var(--surface-hover);color:var(--foreground)}.rules-content-body{padding:0;font-size:13px;line-height:1.65;max-height:none}.rules-content-body p{margin:0 0 var(--space-3);color:var(--muted)}.settings-sidebar{width:380px;max-width:calc(100dvw - 24px);background:var(--surface);border-right:1px solid var(--outline);color:var(--foreground)}.sidebar-header{height:76px;flex-shrink:0;padding:var(--space-4) var(--space-6);border-bottom:1px solid var(--outline)}.sidebar-title{color:var(--foreground);font-family:var(--app-font);font-size:20px;letter-spacing:0;font-weight:500}.btn-icon-close{width:36px;height:36px;border:1px solid var(--outline);background:transparent;font-size:22px;color:var(--muted);display:inline-grid;place-items:center}.sidebar-scrollable-content{padding:0 var(--space-6) var(--space-6);gap:0}.sidebar-section{padding:var(--space-6) 0;margin:0;border-bottom:1px solid var(--outline);display:grid;gap:var(--space-3)}.section-title{display:block;color:var(--accent);font-size:12px;font-weight:500;letter-spacing:.06em;text-transform:none;margin:0}.select-input{width:100%;min-height:44px;padding:10px var(--space-3);color:var(--foreground);background:var(--walnut-950);border:1px solid var(--outline);font-size:14px;outline:none}input.select-input{-webkit-user-select:text;user-select:text}.select-input option{background:var(--surface)}.sidebar-players-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-2)}.player-pill{padding:var(--space-2);min-width:0;border:1px solid var(--outline);background:transparent;gap:var(--space-2)}.player-pill.active-turn{border-color:var(--accent);background:var(--surface-hover);box-shadow:none}.player-avatar{width:24px;height:28px;flex-shrink:0;font-size:12px;background:none}.player-meta{min-width:0}.player-name{font-size:12px;white-space:normal;line-height:1.3}.player-seed-count{font-size:12px;color:var(--muted)}.toggle-row{margin:0;padding:0;display:grid;grid-template-columns:1fr 40px;align-items:center;gap:var(--space-4);border:0;background:none;border-radius:var(--control-radius)}.label-primary{color:var(--foreground);font-size:14px;font-weight:400}.label-desc{color:var(--muted);font-size:12px;line-height:1.55;margin:0}.switch-input{width:40px;justify-self:end}.btn-sidebar-action{width:100%;min-height:42px;justify-content:center;margin:0;gap:var(--space-2);border:1px solid var(--outline);background:transparent;font-size:13px}.btn-sidebar-action.active-toggle{background:var(--surface-hover);border-color:var(--accent);color:var(--foreground)}.btn-toggle-group{display:grid;grid-template-columns:1fr 1fr;background:var(--walnut-950);padding:var(--space-1);gap:var(--space-1)}.btn-toggle{min-height:36px;padding:var(--space-2);font-size:13px}.btn-primary{background:var(--accent);color:var(--walnut-950)}.match-actions{grid-template-columns:1fr 1fr;border-bottom:0}.match-actions #btn-restart{grid-column:1 / -1;min-height:42px}summary{color:var(--muted);cursor:pointer;font-size:12px;line-height:1.5}details[open]>summary{margin-bottom:var(--space-3)}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.hidden{display:none!important}@media(max-width:660px){.game-footer{grid-template-columns:1fr;justify-items:center;gap:var(--space-1);padding-top:var(--space-2)}.footer-signature{grid-column:1;gap:var(--space-2)}.footer-signature p{font-size:10px}.game-header{gap:var(--space-1);grid-template-columns:40px minmax(0,1fr) 40px}.header-left,.header-right,.btn-floating-menu{width:40px;height:40px}.brand-block{flex-direction:column;align-items:center;gap:var(--space-1)}.status-pill{min-height:36px}.status-line{min-height:34px;padding-left:30px;gap:0}.board-status{font-size:11px;padding:6px var(--space-2)}.sidebar-header{padding:var(--space-4);height:64px}.sidebar-scrollable-content{padding:0 var(--space-4) var(--space-4)}.header-guide{padding:var(--space-2)}.tab-btn{font-size:10px}}@media(max-height:520px)and (min-width:661px){.game-header{padding:0 0 var(--space-2);gap:var(--space-2)}.game-footer{padding-top:var(--space-2)}.header-pill,.header-left,.header-right,.btn-floating-menu{min-height:36px;height:36px}.status-pill{height:auto}.status-line{min-height:34px}.guide-toggle{min-height:32px}.board-status{font-size:12px}}.game-header .header-pill,.game-footer .footer-signature{width:max-content;max-width:100%;min-height:28px;border-radius:28px;background:#0c0c0deb;border:1px solid rgba(255,255,255,.13);box-shadow:inset 0 1px #ffffff0f,0 4px 16px #0003}.game-footer .footer-signature{min-height:28px;padding:5px 12px;display:flex;justify-content:center;align-items:center}.game-footer{border-top:0}.game-footer .footer-signature p{margin:0;color:#f2eeea;font:400 11px/1.4 var(--app-font);text-align:center;text-wrap:balance}.game-header .status-line{min-height:26px;padding:0 12px}.game-header .board-status{margin:0;padding:5px 0;color:#f2eeea;font-size:11px;line-height:1.4;text-wrap:balance}.settings-edge-handle{display:grid;place-items:center;position:relative;width:44px;height:44px;padding:0;transform:none;font:400 23px/1 var(--app-font);border:0;border-radius:0;color:#d6d2cc;background:transparent;box-shadow:none;cursor:pointer;z-index:100;touch-action:manipulation}.settings-edge-handle:hover{background:transparent;color:#fff}.settings-edge-handle:active{background:transparent;opacity:.65}.settings-edge-handle:focus-visible{outline:2px solid #f2d3a4;outline-offset:2px}.settings-chevron{display:block;flex-shrink:0;pointer-events:none}.game-header #btn-retry-ai{border-radius:999px;width:auto;padding-inline:20px}#settings-sidebar{--settings-text: #f5f3f0;--settings-muted: #bcb8b3;--settings-line: rgba(255, 255, 255, .1);inset:12px auto 12px 12px;width:390px;max-width:calc(100dvw - 44px);border:1px solid rgba(255,255,255,.2);border-radius:32px;background:#1f1e1df0;-webkit-backdrop-filter:blur(32px) saturate(140%);backdrop-filter:blur(32px) saturate(140%);box-shadow:inset 0 1px #ffffff12,0 24px 80px #0008;overflow:visible;color:var(--settings-text);font-family:var(--app-font);transition:transform .3s cubic-bezier(.2,.8,.2,1),opacity .2s ease}#settings-sidebar.closed{transform:translate(calc(-100% - 24px));opacity:0}#settings-sidebar #btn-close-sidebar{position:relative;z-index:1}#settings-sidebar .sidebar-bottom{flex-shrink:0;padding:6px 12px 10px}#settings-sidebar .sidebar-header{height:62px;padding:14px 20px 10px;border:0}#settings-sidebar .sidebar-title{color:var(--settings-text);font:650 25px/1.2 var(--app-font);letter-spacing:-.035em}#settings-sidebar .btn-icon-close{width:44px;height:44px;border:0;border-radius:50%;color:#eee;background:#ffffff0d}#settings-sidebar .sidebar-scrollable-content{min-height:0;padding:0 12px 14px;gap:8px;border-radius:0 0 32px 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.label-desc{color:var(--settings-muted);font-size:12px;line-height:1.45}#settings-sidebar .select-input{border-radius:999px;background:#ffffff0c;border-color:#ffffff12;color:var(--settings-text);padding:12px 16px;min-height:46px;color-scheme:dark}#settings-sidebar .select-input option{background:#292827;color:#f5f3f0}#settings-sidebar .toggle-row{grid-template-columns:minmax(0,1fr) 58px;min-height:44px;gap:12px}#settings-sidebar .toggle-row+.toggle-row{border-top:1px solid var(--settings-line);border-radius:0;padding-top:8px}#settings-sidebar .switch-input,#settings-sidebar .pill-switch{-webkit-appearance:none;-moz-appearance:none;appearance:none;display:block;position:relative;width:58px;height:34px;flex:0 0 58px;margin:5px 0;border:1px solid #ffffff12;border-radius:999px;background:#666460;cursor:pointer;transition:background-color .16s ease}#settings-sidebar .switch-input:before,#settings-sidebar .pill-switch:before{content:"";position:absolute;width:28px;height:28px;left:2px;top:2px;border-radius:50%;background:#fff;box-shadow:0 2px 5px #0004;transition:transform .2s cubic-bezier(.2,.8,.2,1)}#settings-sidebar .switch-input:after,#settings-sidebar .pill-switch:after{content:"";position:absolute;right:9px;top:12px;width:7px;height:7px;border:1px solid #fff;border-radius:50%}#settings-sidebar .switch-input:checked,#settings-sidebar [aria-pressed=true] .pill-switch{background:#238449}#settings-sidebar .switch-input:checked:before,#settings-sidebar [aria-pressed=true] .pill-switch:before{transform:translate(24px)}#settings-sidebar .switch-input:checked:after,#settings-sidebar [aria-pressed=true] .pill-switch:after{left:13px;right:auto;width:1px;height:9px;top:11px;border:0;border-radius:1px;background:#fff}#settings-sidebar .settings-toggle{display:flex;align-items:center;justify-content:space-between;gap:14px;width:100%;min-height:48px;padding:0;border:0;border-radius:0;background:transparent;color:var(--settings-text);text-align:left;font-size:14px;font-weight:500;box-shadow:none}#settings-sidebar .settings-toggle>span:first-child{flex:1}#settings-sidebar .btn-sidebar-action,#settings-sidebar .btn-danger,#settings-sidebar .btn-toggle{border-radius:999px;min-height:44px;color:var(--settings-text);font-weight:500}#settings-sidebar .btn-sidebar-action{background:#ffffff08;border-color:#ffffff16}#settings-sidebar .btn-toggle-group{border-radius:999px;padding:4px;gap:2px;background:#0003}#settings-sidebar .btn-toggle{background:transparent;border:0;padding:10px 8px}#settings-sidebar .btn-toggle.active{background:#ffffff20;box-shadow:inset 0 1px #ffffff14,0 2px 6px #0002;color:#fff}#settings-sidebar .match-actions{grid-template-columns:1fr 1fr}#settings-sidebar .match-actions #btn-restart{grid-column:auto}#settings-sidebar .settings-rules summary{color:var(--settings-text);font-size:14px;font-weight:500;min-height:44px;padding:4px 0}#settings-sidebar .settings-rules summary .label-desc{display:block;margin-top:5px;font-weight:400}#settings-sidebar .settings-rules ul{margin:12px 0 0;padding-left:18px;color:var(--settings-muted);font-size:12px;line-height:1.55}#settings-sidebar .settings-rules li+li{margin-top:8px}#settings-sidebar .btn-danger{background:#f77c780d;border:1px solid #f77c7829;color:#ffaaa4}#settings-sidebar .player-pill{border-radius:18px;border-color:#ffffff10;padding:10px}#settings-sidebar .player-pill.active-turn{background:#ffffff0b;border-color:#ffffff32}#settings-sidebar .player-avatar{border-radius:50%;color:var(--settings-text)}#settings-sidebar .player-name{color:var(--settings-text)}#settings-sidebar .player-seed-count{color:var(--settings-muted)}#settings-sidebar .settings-help{padding:6px;background:#ffffff08}#settings-sidebar .settings-help-button{display:flex;align-items:center;gap:12px;width:100%;min-height:48px;padding:6px 12px 6px 6px;background:transparent;border:0;border-radius:999px;color:var(--settings-text);font-size:14px;font-weight:550;text-align:left;cursor:pointer}#settings-sidebar .help-symbol{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:#ffffff0e;font-size:18px}#settings-sidebar .help-chevron{margin-left:auto;color:var(--settings-muted);transition:transform .18s ease}#settings-sidebar [aria-expanded=true] .help-chevron{transform:rotate(180deg)}#settings-sidebar .header-guide{padding:10px;max-height:none;overflow:visible;border:0}#settings-sidebar .guide-heading h2{color:var(--settings-text);font-size:14px}#settings-sidebar .rules-nav-tabs{border-radius:24px;padding:4px;background:#0003;gap:2px}#settings-sidebar .tab-btn{border-radius:999px;min-height:44px;border:0;color:var(--settings-muted);font-size:11px}#settings-sidebar .tab-btn.active{color:#fff;background:#ffffff20}#settings-sidebar .rules-content-body p,#settings-sidebar summary{color:var(--settings-muted)}#settings-sidebar a{color:#e7c795}#settings-sidebar button:active:not(:disabled){opacity:.72}#settings-sidebar :is(button,input,select):focus-visible{outline:2px solid #f2d3a4;outline-offset:3px}@media(max-width:480px){#settings-sidebar{inset:8px auto 8px 8px;width:calc(100dvw - 36px);max-width:none;border-radius:28px}.game-header .status-line{padding-inline:14px}.game-header .board-status,.game-footer .footer-signature p{font-size:11px}.game-footer .footer-signature{padding-inline:14px}}@media(prefers-reduced-motion:reduce){#settings-sidebar,#settings-sidebar .switch-input:before,#settings-sidebar .pill-switch:before,#settings-sidebar .help-chevron{transition:none}}@media(prefers-reduced-transparency:reduce),(prefers-contrast:more){#settings-sidebar{background:#211f1e;-webkit-backdrop-filter:none;backdrop-filter:none}#settings-sidebar .sidebar-section{background:#302e2c;border-color:#ffffff40}}.app-container{padding:0}.play-surface{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;padding:max(4px,env(safe-area-inset-top)) max(6px,env(safe-area-inset-right)) max(4px,env(safe-area-inset-bottom)) max(6px,env(safe-area-inset-left))}.game-header{display:flex;justify-content:center;min-height:0;height:auto;padding:0 0 4px;gap:0}.game-header .header-left,.game-header .header-right{display:none}.game-header .brand-block{flex:0 1 auto;max-width:100%}.game-footer{display:grid;grid-template-columns:44px minmax(0,1fr) 44px;align-items:center;padding:4px 0 0;gap:6px}.game-footer .footer-signature{grid-column:2;justify-self:center}.game-footer #btn-toggle-sidebar{grid-column:1;grid-row:1}.board-wrapper{max-width:1660px}.ikibuguzo-board{--board-rotation: 0;width:min(99cqw,calc((100cqh - 8px) * var(--ratio)));height:min(calc(99cqw / var(--ratio)),calc(100cqh - 8px));max-width:1640px;max-height:calc(1640px / var(--ratio))}.pit-cell,.dir-btn,button,select,input{touch-action:manipulation}#settings-sidebar .sidebar-scrollable-content{touch-action:pan-y;-webkit-overflow-scrolling:touch}@media(pointer:coarse)and (orientation:portrait)and (max-width:700px){.landscape-board .play-surface{position:absolute;top:50%;left:50%;width:100dvh;height:100dvw;padding:max(4px,env(safe-area-inset-right)) max(6px,env(safe-area-inset-bottom)) max(4px,env(safe-area-inset-left)) max(6px,env(safe-area-inset-top));transform:translate(-50%,-50%) rotate(90deg)}.landscape-board .ikibuguzo-board{--board-rotation: 90}.landscape-board .victory-toast{max-height:calc(100dvw - 24px);overflow-y:auto}}@media(hover:none)and (pointer:coarse){.pit-cell.eligible:hover{transform:none}.tabletop-mode .zone-p2 .pit-cell.eligible:hover{transform:rotate(180deg)}.direction-badge-container .dir-btn{position:relative}.direction-badge-container .dir-btn:after{content:"";position:absolute;top:-6px;right:-4px;bottom:-6px;left:-4px;border-radius:inherit}.direction-badge-container .dir-btn:active:not(:disabled){background:#493b29}}.victory-toast{width:min(350px,calc(100dvw - 32px));padding:24px;border:1px solid #ffffff1a;border-radius:28px;gap:12px}.victory-message{font-size:clamp(24px,4vw,30px);font-weight:650;line-height:1.15}.victory-detail{color:var(--muted);font-size:13px;line-height:1.5;max-width:28ch}.victory-toast #btn-play-again{border:1px solid #ffffff20;border-radius:999px;min-height:44px;font-size:14px;box-shadow:none;margin-top:4px}.victory-toast #btn-play-again:hover{transform:none;box-shadow:none;border-color:#ffffff50}.victory-toast.celebrate .victory-inzo span{animation:seed-salute .28s var(--ease-out) both}.victory-toast.celebrate .victory-inzo span:nth-child(2){animation-delay:60ms}.victory-toast.celebrate .victory-inzo span:nth-child(3){animation-delay:.12s}@keyframes seed-salute{0%{opacity:.3;transform:translateY(10px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.victory-toast.celebrate .victory-inzo:before,.victory-toast.celebrate .victory-inzo:after{content:"✦";color:var(--accent);font-size:15px;animation:seed-salute .28s var(--ease-out) both}@media(prefers-reduced-motion:reduce){.victory-toast.celebrate .victory-inzo span,.victory-toast.celebrate .victory-inzo:before,.victory-toast.celebrate .victory-inzo:after{animation:none}}