:root{--color-obsidian-950: #0f1312;--color-obsidian-900: #151918;--color-obsidian-800: #1e2421;--color-stone-700: #39413b;--color-stone-500: #6f7468;--color-parchment-100: #fff5dc;--color-parchment-200: #f7e4b7;--color-parchment-300: #d9cfb9;--color-brass-300: #f4c878;--color-brass-500: #b87536;--color-crystal-300: #98d8cf;--color-rune-300: #7df0d4;--color-candle-300: #ffd37a;--color-ember-400: #f06f45;--color-ward-500: #c23a36;--color-glyph-400: #86e28f;--color-astral-500: #425d78;--color-danger-300: #f3a68f;--color-success-300: #acdca4;--color-warning-300: #f3d17a;--surface-page: #121615;--surface-panel: rgba(16, 20, 18, .88);--surface-panel-strong: rgba(5, 8, 8, .78);--surface-altar: rgba(9, 13, 12, .9);--surface-raised: rgba(255, 255, 255, .055);--rune-line: rgba(125, 240, 212, .18);--star-map-line: rgba(255, 226, 166, .09);--border-subtle: rgba(255, 226, 166, .18);--border-strong: rgba(255, 226, 166, .42);--shadow-panel: 0 18px 50px rgba(0, 0, 0, .26);--shadow-board: 0 34px 94px rgba(0, 0, 0, .58), 0 0 56px rgba(125, 240, 212, .08);--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--radius-panel: 8px;--radius-control: 8px;--font-body: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--focus-ring: 0 0 0 3px rgba(152, 216, 207, .46);font-family:var(--font-body);color:var(--color-parchment-100);background:var(--surface-page);font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,summary{font:inherit}button{min-height:44px}button:focus-visible,summary:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:0;box-shadow:var(--focus-ring)}h1,h2,h3,p{margin-top:0}h1{margin-bottom:var(--space-5);color:var(--color-parchment-100);font-size:clamp(2.15rem,5vw,4.8rem);line-height:.98;font-weight:850}h2{margin-bottom:var(--space-3);color:var(--color-parchment-200);font-size:1rem}.academy-shell{position:relative;min-height:100vh;background:radial-gradient(circle at 14% 12%,rgba(255,211,122,.24),transparent 19rem),radial-gradient(circle at 78% 18%,rgba(125,240,212,.12),transparent 24rem),radial-gradient(circle at 50% 112%,rgba(66,93,120,.25),transparent 34rem),linear-gradient(135deg,#080b0b,#191a16 46%,#0b0f0e);overflow-x:hidden}.academy-shell:before{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;content:"";background:linear-gradient(90deg,var(--star-map-line) 1px,transparent 1px),linear-gradient(var(--star-map-line) 1px,transparent 1px),radial-gradient(circle at 20% 28%,rgba(255,211,122,.18) 0 2px,transparent 3px),radial-gradient(circle at 70% 18%,rgba(125,240,212,.14) 0 1px,transparent 2px),radial-gradient(circle at 84% 66%,rgba(255,211,122,.12) 0 1px,transparent 2px);background-size:32px 32px,32px 32px,240px 180px,190px 210px,260px 220px;-webkit-mask-image:linear-gradient(to bottom,#000,#0000009e);mask-image:linear-gradient(to bottom,#000,#0000009e)}.academy-topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:var(--space-5);border-bottom:1px solid var(--border-subtle);padding:14px clamp(18px,4vw,56px);background:linear-gradient(90deg,rgba(125,240,212,.08),transparent 24%,rgba(255,211,122,.08)),#070a09eb;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.academy-main{padding:30px clamp(18px,4vw,56px) 46px}.brand-mark{display:inline-flex;align-items:center;gap:var(--space-3);border:0;padding:0;color:var(--color-parchment-100);background:transparent;cursor:pointer}.brand-mark:hover{color:var(--color-brass-300)}.brand-glyph{position:relative;display:grid;place-items:center;width:48px;height:48px;border:1px solid rgba(255,211,122,.62);border-radius:50%;color:#17120a;background:radial-gradient(circle at 38% 28%,#fff0b5,var(--color-candle-300) 52%,#9d622d 100%);font-size:1.32rem;font-weight:900;box-shadow:inset 0 0 0 4px #130f0a29,0 0 26px #ffd37a3d}.brand-glyph:before,.brand-glyph:after{position:absolute;top:5px;right:5px;bottom:5px;left:5px;border:1px solid rgba(24,18,10,.34);border-radius:50%;content:""}.brand-glyph:after{top:11px;right:11px;bottom:11px;left:11px;border-color:#18120a38}.brand-mark strong{display:block;white-space:nowrap}.brand-copy small{display:block;margin-top:2px;color:var(--color-parchment-300);font-size:.78rem;font-weight:750}.topbar-actions{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:var(--space-3)}.academy-nav{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:var(--space-2)}.nav-link,.rune-button{border:1px solid rgba(255,226,166,.34);border-radius:var(--radius-control);padding:0 16px;color:var(--color-parchment-100);background:linear-gradient(90deg,rgba(125,240,212,.08),transparent 22%,rgba(255,211,122,.08)),linear-gradient(180deg,rgba(255,255,255,.06),transparent),#734d2a9e;font-weight:750;cursor:pointer}.nav-link{min-height:38px;padding:0 12px;color:var(--color-parchment-300);background:#ffffff0d}.nav-link:hover,.rune-button:hover{border-color:#ffe2a67a;background-color:#966533c7}.nav-link.active,.rune-button-primary{color:#151918;background:radial-gradient(circle at 50% 0%,#fff0b5,transparent 58%),var(--color-candle-300);box-shadow:0 0 0 2px #7df0d447}.rune-button-muted{background:#ffffff0f}.rune-button-success{color:#102016;background:var(--color-success-300)}.language-switch{display:inline-flex;border:1px solid rgba(125,240,212,.24);border-radius:var(--radius-control);padding:3px;background:#0205056b}.language-option{min-height:36px;border:0;border-radius:6px;padding:0 12px;color:var(--color-parchment-300);background:transparent;font-weight:800;cursor:pointer}.language-option.active{color:#07100d;background:var(--color-rune-300)}.page-header{display:flex;align-items:end;justify-content:space-between;gap:var(--space-6);margin-bottom:var(--space-8)}.page-header h1{margin-bottom:var(--space-4)}.page-intro{max-width:720px;color:var(--color-parchment-300);line-height:1.7}.page-intro p{margin-bottom:0}.page-actions{display:flex;flex:0 0 auto;justify-content:flex-end;min-width:min(100%,440px)}.kicker{margin:0 0 var(--space-3);color:var(--color-brass-300);font-size:.85rem;font-weight:850;text-transform:uppercase}.stone-panel{position:relative;border:1px solid var(--border-subtle);border-radius:var(--radius-panel);padding:clamp(18px,3vw,28px);background:radial-gradient(circle at 100% 0%,rgba(125,240,212,.08),transparent 16rem),linear-gradient(90deg,var(--star-map-line) 1px,transparent 1px),linear-gradient(var(--star-map-line) 1px,transparent 1px),var(--surface-panel);background-size:26px 26px;box-shadow:var(--shadow-panel)}.stone-panel:before,.board-frame:before{position:absolute;top:9px;right:9px;bottom:9px;left:9px;pointer-events:none;border-radius:calc(var(--radius-panel) - 2px);content:"";background:linear-gradient(90deg,var(--color-rune-300) 0 18px,transparent 18px calc(100% - 18px),var(--color-rune-300) calc(100% - 18px)) top left / 100% 1px no-repeat,linear-gradient(90deg,var(--color-rune-300) 0 18px,transparent 18px calc(100% - 18px),var(--color-rune-300) calc(100% - 18px)) bottom left / 100% 1px no-repeat,linear-gradient(var(--color-rune-300) 0 18px,transparent 18px calc(100% - 18px),var(--color-rune-300) calc(100% - 18px)) top left / 1px 100% no-repeat,linear-gradient(var(--color-rune-300) 0 18px,transparent 18px calc(100% - 18px),var(--color-rune-300) calc(100% - 18px)) top right / 1px 100% no-repeat;opacity:.22}.status-badge{display:inline-flex;align-items:center;min-height:30px;border:1px solid rgba(255,226,166,.22);border-radius:999px;padding:4px 10px;color:var(--color-parchment-200);background:var(--surface-raised);font-size:.82rem;font-weight:800}.status-badge-success{color:#102016;background:var(--color-glyph-400)}.status-badge-warning{color:#1f1905;background:var(--color-candle-300)}.status-badge-danger{color:#2b1009;background:var(--color-ember-400)}.status-badge-muted{color:var(--color-parchment-300);background:#ffffff0b}.feedback-banner{width:min(100%,552px);min-height:44px;margin:var(--space-4) 0 0;border:1px solid rgba(255,226,166,.22);border-radius:var(--radius-control);padding:12px 14px;color:var(--color-parchment-200);background:linear-gradient(90deg,rgba(125,240,212,.08),transparent),#06090894}.feedback-banner-success{border-color:#86e28f85;color:var(--color-glyph-400);box-shadow:inset 4px 0 #86e28f94}.feedback-banner-danger{border-color:#f06f459e;color:#ffb49b;box-shadow:inset 4px 0 0 var(--color-ward-500)}.board-frame{position:relative;width:fit-content;max-width:100%;border:1px solid rgba(255,220,148,.42);border-radius:12px;padding:clamp(14px,2.4vw,22px);background:radial-gradient(circle at 50% 50%,rgba(125,240,212,.14),transparent 42%),conic-gradient(from 45deg,rgba(255,211,122,.18),transparent 18%,rgba(125,240,212,.12),transparent 38%,rgba(255,211,122,.18)),linear-gradient(90deg,rgba(255,218,139,.14) 1px,transparent 1px),linear-gradient(rgba(255,218,139,.14) 1px,transparent 1px),var(--surface-altar);background-size:auto,auto,24px 24px,24px 24px,auto;box-shadow:inset 0 0 0 1px #ffffff0f,inset 0 0 40px #0006,var(--shadow-board)}.home-shell{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,560px);align-items:center;gap:clamp(28px,5vw,58px);min-height:calc(100vh - 132px)}.home-hero{max-width:780px}.mode-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-3);margin-top:var(--space-6)}.mode-card{position:relative;display:grid;gap:var(--space-3);align-content:start;min-height:148px;border:1px solid rgba(255,226,166,.2);border-radius:var(--radius-panel);padding:var(--space-4);color:var(--color-parchment-300);background:#101412c2;text-align:left;cursor:pointer}.mode-card:after{position:absolute;right:14px;bottom:12px;color:#7df0d433;content:"✦";font-size:1.2rem}.mode-card:hover{border-color:#f4c87870;background:#1a1f1cdb}.mode-card-primary{border-color:#7df0d46b;box-shadow:inset 0 0 26px #7df0d40f}.mode-card-topline{display:flex;align-items:start;justify-content:space-between;gap:var(--space-3)}.mode-card strong{color:var(--color-parchment-200);font-size:1.05rem}.mode-card>span:last-child{font-size:.95rem;line-height:1.48}.home-board-preview,.board-stage{display:flex;flex-direction:column;align-items:center;min-width:0}.play-shell,.tactics-page{display:grid;gap:var(--space-2)}.play-layout,.tactics-layout{display:grid;grid-template-columns:minmax(300px,620px) minmax(280px,430px);align-items:start;justify-content:center;gap:var(--space-8)}.control-panel{padding:var(--space-5)}.rules-tablet{border-color:#7df0d42e}.panel-section{padding-bottom:var(--space-5);margin-bottom:var(--space-5);border-bottom:1px solid var(--border-subtle)}.panel-section:last-child{margin-bottom:0}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3)}.status-list{display:grid;gap:var(--space-3);margin:0}.status-list div{display:grid;grid-template-columns:96px 1fr;gap:var(--space-3)}dt{color:#b9ad92;font-weight:700}dd{margin:0;color:var(--color-parchment-100)}.action-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-3)}.move-history{display:grid;gap:var(--space-2);max-height:220px;margin:0;padding:0;overflow:auto;list-style:none}.move-history li{display:grid;grid-template-columns:36px 1fr auto;gap:var(--space-3);align-items:center;border-radius:var(--radius-control);padding:9px 10px;background:var(--surface-raised)}.move-history span,.move-history small,.empty-history{color:#b9ad92}.fen-details{color:var(--color-parchment-300)}.fen-details summary{cursor:pointer;color:var(--color-parchment-200);font-weight:800}.fen-details code{display:block;margin-top:var(--space-3);white-space:normal;overflow-wrap:anywhere;border:1px solid var(--border-subtle);border-radius:var(--radius-control);padding:var(--space-3);color:var(--color-brass-300);background:#00000047}.puzzle-selector{display:grid;grid-template-columns:auto minmax(140px,1fr) auto;align-items:center;gap:var(--space-3);min-width:min(100%,440px)}.puzzle-selector span{border:1px solid rgba(255,226,166,.2);border-radius:var(--radius-control);padding:var(--space-3);color:var(--color-parchment-200);background:#101412b8;text-align:center;font-weight:800}.puzzle-panel p{color:var(--color-parchment-300);line-height:1.6}.tag-row{display:flex;flex-wrap:wrap;gap:var(--space-2);margin-top:var(--space-4)}.tag-row span{border:1px solid rgba(255,226,166,.22);border-radius:999px;padding:7px 10px;color:var(--color-candle-300);background:#ffffff0e;font-size:.88rem;font-weight:750}.hint-text,.puzzle-complete{border-radius:var(--radius-control);padding:var(--space-3);border:1px solid rgba(125,240,212,.16);background:#7df0d414}.promotion-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:10;display:grid;place-items:center;padding:var(--space-6);background:#030504b8}.promotion-dialog{width:min(100%,420px);border:1px solid var(--border-strong);border-radius:var(--radius-panel);padding:var(--space-6);color:var(--color-parchment-100);background:radial-gradient(circle at 50% 0%,rgba(255,211,122,.16),transparent 16rem),linear-gradient(90deg,rgba(255,218,139,.12) 1px,transparent 1px),linear-gradient(rgba(255,218,139,.12) 1px,transparent 1px),var(--color-obsidian-900);background-size:22px 22px;box-shadow:0 28px 90px #00000094}.promotion-dialog h2{margin-bottom:var(--space-3);font-size:1.5rem}.promotion-dialog p:not(.kicker){color:var(--color-parchment-300);line-height:1.6}.promotion-actions{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-3);margin-top:var(--space-5)}.promotion-cancel{width:100%;margin-top:var(--space-3)}.placeholder-page,.settings-page{max-width:980px}.placeholder-page>.page-header,.settings-page>.page-header{margin-bottom:var(--space-5)}.placeholder-list{display:grid;gap:var(--space-3);margin:var(--space-6) 0 0;padding-left:var(--space-5);color:var(--color-parchment-100)}.placeholder-list li::marker{color:var(--color-brass-300)}.settings-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-3);margin-top:var(--space-6)}.setting-panel{border:1px solid rgba(255,226,166,.14);border-radius:var(--radius-panel);padding:var(--space-4);background:var(--surface-raised)}.setting-panel p{color:var(--color-parchment-300);line-height:1.55}.academy-nav{align-items:stretch;gap:var(--space-3)}.nav-group{display:flex;align-items:center;gap:var(--space-2)}.nav-group-label{color:#a99e86;font-size:.72rem;font-weight:850;text-transform:uppercase}.nav-link-row{display:flex;flex-wrap:wrap;gap:var(--space-2)}.nav-link-planned{min-height:34px;border-color:#ffe2a62e;color:#b9ad92;background:#ffffff08}.entrance-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,420px);align-items:stretch;gap:clamp(24px,4vw,44px)}.entrance-copy{max-width:800px}.secondary-name{margin:calc(-1 * var(--space-3)) 0 var(--space-4);color:var(--color-brass-300);font-weight:850}.home-promise{max-width:680px;margin-bottom:var(--space-3);color:var(--color-parchment-100);font-size:clamp(1.25rem,2vw,1.75rem);font-weight:800;line-height:1.3}.home-state-line{max-width:760px;border-left:3px solid rgba(125,240,212,.6);padding-left:var(--space-4);color:var(--color-parchment-200);line-height:1.65}.recommended-path{position:relative;border:1px solid rgba(244,200,120,.38);border-radius:var(--radius-panel);padding:clamp(18px,3vw,28px);background:radial-gradient(circle at 100% 0%,rgba(255,211,122,.15),transparent 13rem),linear-gradient(180deg,rgba(255,255,255,.055),transparent),#090d0cc7;box-shadow:var(--shadow-panel)}.recommended-path h2{font-size:clamp(1.35rem,3vw,2rem);line-height:1.1}.recommended-actions,.placeholder-actions{display:flex;flex-wrap:wrap;gap:var(--space-3);margin-top:var(--space-5)}.home-shell{grid-template-columns:1fr;align-items:start;gap:clamp(24px,4vw,48px)}.home-journey-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(260px,.9fr);align-items:start;gap:var(--space-6)}.journey-section{min-width:0}.journey-section h2{margin-bottom:var(--space-4);font-size:1.15rem}.available-chambers,.future-wings{grid-column:1}.home-board-preview{grid-column:2;grid-row:1 / span 2;align-items:start}.mode-grid{margin-top:0}.future-wing-grid{display:grid;gap:var(--space-3)}.future-wing-card{border:1px solid rgba(255,226,166,.14);border-radius:var(--radius-panel);padding:var(--space-4);color:var(--color-parchment-300);background:#ffffff09}.future-wing-card p{margin:var(--space-3) 0 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