:root{--lapis-950: #070f24;--lapis-900: #0b1630;--lapis-850: #0f1d3c;--lapis-800: #132449;--lapis-700: #1a3266;--lapis-600: #1f3f8a;--lapis-500: #2c55b0;--lapis-400: #4f78d1;--lapis-300: #8eaae6;--turq-700: #0c6964;--turq-600: #0f7f78;--turq-500: #17a398;--turq-400: #3cc2b6;--turq-300: #7dd9cf;--turq-200: #bfeee8;--gold-700: #8a6212;--gold-600: #a57a22;--gold-500: #c39a3e;--gold-400: #d9b25c;--gold-300: #e8cd8a;--gold-200: #f3e3b8;--ivory-50: #fdfaf3;--ivory-100: #f8f2e5;--ivory-200: #f1e9d8;--ivory-300: #e6dbc3;--ink-900: #12203f;--font-display: "Playfair Display", "Iowan Old Style", "Palatino Linotype", Georgia, serif;--font-ui: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--fs-xs: 12px;--fs-sm: 14px;--fs-md: 16px;--fs-lg: 18px;--fs-xl: 21px;--fs-2xl: 26px;--fs-3xl: 34px;--fs-4xl: clamp(40px, 6.4vw, 76px);--fs-5xl: clamp(48px, 9vw, 96px);--lh-tight: 1.1;--lh-snug: 1.3;--lh-body: 1.55;--lh-serif: 1.65;--fw-regular: 400;--fw-medium: 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#4d7e77;--board-coord-dark: #f4ecd6;--hl-last: rgba(232, 196, 92, .5);--hl-selected: rgba(232, 196, 92, .78);--hl-move: rgba(12, 28, 64, .34);--hl-capture: rgba(176, 40, 32, .72);--hl-check: rgba(226, 52, 40, .95);--hl-premium: rgba(31, 63, 138, .6);--c-bg: #f1eadb;--c-surface: #fcf9f2;--c-surface-2: #f6f0e3;--c-surface-3: #efe6d3;--c-sunken: #e8dfcb;--c-ink: #13213f;--c-ink-2: #4a5570;--c-ink-3: #7b8398;--c-line: rgba(19, 33, 63, .12);--c-line-strong: rgba(19, 33, 63, .24);--c-primary: #1f3f8a;--c-primary-hover: #183374;--c-on-primary: #fbf6ea;--c-lapis: #1f3f8a;--c-lapis-deep: #122659;--c-lapis-soft: rgba(31, 63, 138, .09);--c-turq: #0f7f78;--c-turq-soft: rgba(15, 127, 120, .11);--c-gold: #c39a3e;--c-gold-soft: rgba(195, 154, 62, .16);--c-gold-ink: #8a6212;--c-link: #1f3f8a;--c-success: #1f7a4d;--c-success-soft: rgba(31, 122, 77, .12);--c-danger: #b42f24;--c-danger-soft: rgba(180, 47, 36, .1);--c-warning: #a86b00;--c-warning-soft: rgba(200, 132, 0, .13);--c-info: 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16px;border-radius:var(--r-pill);box-shadow:var(--sh-3)}.modal-back{position:fixed;top:0;right:0;bottom:0;left:0;z-index:var(--z-modal);background:var(--c-overlay);display:grid;place-items:center;padding:var(--s-4);backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px);animation:fade-in var(--dur-2) ease-out}.modal{position:relative;background:var(--c-surface);color:var(--c-ink);border-radius:var(--r-xl);padding:var(--s-7) var(--s-6) var(--s-6);width:min(100%,400px);box-shadow:var(--sh-4);text-align:center;border:1px solid var(--c-line);animation:modal-in var(--dur-3) var(--ease-spring)}@keyframes fade-in{0%{opacity:0}}@keyframes modal-in{0%{opacity:0;transform:translateY(14px) scale(.96)}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:1ms!important;animation-iteration-count:1!important;transition-duration:1ms!important;scroll-behavior:auto!important}}.footer-legal{display:flex;flex-wrap:wrap;gap:var(--s-1) var(--s-5)}.footer-legal 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sans-serif);font-size:calc(var(--sq) * .26);cursor:pointer}@supports (container-type: inline-size){.board{--sq: calc(100cqw / 13.96)}}.board-frame{position:absolute;left:calc(var(--sq) + var(--fw));top:0;width:calc(var(--sq) * 11 + var(--fw) * 2);height:100%;border-radius:calc(var(--fw) * .7);background:radial-gradient(120% 80% at 30% 0%,rgba(255,255,255,.12),transparent 60%),linear-gradient(160deg,var(--frame-a),var(--frame-b) 50%,var(--frame-c));box-shadow:0 0 0 1px #e8cd8a59,0 calc(var(--sq) * .12) calc(var(--sq) * .5) calc(var(--sq) * -.1) #040a1e8c,0 2px 4px #040a1e4d;z-index:0}.board-frame:before{content:"";position:absolute;inset:calc(var(--fw) * .36);border:1px solid var(--gold-line);border-radius:calc(var(--fw) * .35);pointer-events:none}.board-frame:after{content:"";position:absolute;inset:var(--fw);box-shadow:0 0 0 1.5px #e8cd8ae6,inset 0 0 calc(var(--sq) * .3) #00000040;z-index:3;pointer-events:none}.bastion{--merlon: calc(var(--sq) * 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