:root{color-scheme:light;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--text);background:var(--page);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--page: #eee7df;--text: #211b18;--muted: #655a54;--accent: #704634;--accent-strong: #583629;--accent-soft: #e2d0c6;--secondary: #5d6460;--secondary-soft: #ecefeb;--panel: rgba(250, 246, 241, .82);--card: #fff9f2;--line: rgba(33, 27, 24, .13);--input-line: rgba(33, 27, 24, .22);--shadow: rgba(33, 27, 24, .14);--board-frame: #2f2723;--square-light: #d8c0a2;--square-dark: #695142;--target: rgba(112, 70, 52, .85);--gold: #bd8f3e;--next-bg: #eadbd0;--next-text: #4d3329;--wash-a: rgba(93, 100, 96, .14);--wash-b: rgba(112, 70, 52, .2)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:linear-gradient(135deg,var(--wash-a),transparent 34%),linear-gradient(315deg,var(--wash-b),transparent 36%),var(--page);background-attachment:fixed}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}.app-shell{position:relative;width:min(1180px,calc(100vw - 32px));margin:0 auto;padding:28px 0 40px;min-height:100vh}.topbar{margin-bottom:24px;padding:4px 0 0}.eyebrow{margin:0 0 8px;color:var(--accent-strong);font-size:.78rem;font-weight:800;letter-spacing:0;text-transform:uppercase}h1,h2,h3,p{margin-top:0}h1{margin-bottom:0;font-size:clamp(2.1rem,5vw,5rem);line-height:.92;max-width:760px}h2{margin-bottom:12px;font-size:clamp(1.7rem,3vw,3.1rem);line-height:1}h3{margin-bottom:10px;font-size:1.7rem}.hero-panel,.quest-grid{min-height:620px;border:1px solid rgba(29,37,48,.12);border-radius:8px;background:var(--panel);box-shadow:0 20px 70px var(--shadow);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.hero-panel{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,420px);gap:44px;align-items:center;padding:clamp(24px,5vw,72px)}.hero-copy{max-width:650px}.login-panel .hero-copy{align-self:center;padding-bottom:42px;border-bottom:1px solid var(--line)}.hero-copy svg,.round-icon{color:var(--accent)}.hero-copy p,.side-panel p{color:var(--muted);font-size:1rem;line-height:1.65}.login-form{display:grid;gap:12px;padding:22px;border:1px solid rgba(57,104,117,.18);border-radius:8px;background:var(--card)}.login-form label,.slider-label{color:#334155;font-size:.95rem;font-weight:800}.login-form input{width:100%;border:1px solid rgba(29,37,48,.18);border-radius:6px;padding:14px 15px;outline:none}.login-form input:focus{border-color:var(--secondary);box-shadow:0 0 0 3px var(--wash-a)}.form-error{margin:0;color:var(--accent);font-weight:700}.primary-button,.icon-button{border:none;border-radius:6px;min-height:44px;font-weight:850}.primary-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 18px;color:#fff;background:var(--accent)}.primary-button:disabled{opacity:.45}.icon-button{width:48px;color:var(--text);background:var(--secondary-soft)}.quest-grid{display:grid;grid-template-columns:minmax(360px,680px) minmax(300px,1fr);gap:clamp(20px,3vw,42px);align-items:center;padding:clamp(18px,4vw,44px)}.board-wrap{display:grid;place-items:center}.board-grid{display:grid;grid-template-columns:repeat(8,1fr);width:min(680px,100%);aspect-ratio:1;border:10px solid var(--board-frame);border-radius:8px;overflow:hidden;background:var(--board-frame);box-shadow:0 18px 45px var(--shadow)}.square{position:relative;display:grid;place-items:center;width:100%;aspect-ratio:1;border:none;padding:0}.square.light{background:var(--square-light)}.square.dark{background:var(--square-dark)}.square.selected{outline:4px solid var(--gold);outline-offset:-4px}.square.target:after{content:"";width:28%;aspect-ratio:1;border-radius:999px;background:var(--target)}.checker-piece,.chess-piece{position:absolute;display:grid;place-items:center;-webkit-user-select:none;user-select:none}.checker-piece{width:62%;aspect-ratio:1;border-radius:50%;left:50%;top:50%;transform:translate(-50%,-50%);box-shadow:inset 0 5px 8px #ffffff47,inset 0 -8px 12px #0000003d,0 5px 10px #0000003d}.white-checker{border:2px solid rgba(92,67,49,.24);background:radial-gradient(circle at 35% 28%,rgba(255,255,255,.95),transparent 28%),linear-gradient(145deg,#fff6df,#d8c29b)}.black-checker{border:2px solid rgba(255,255,255,.12);background:radial-gradient(circle at 35% 28%,rgba(255,255,255,.2),transparent 26%),linear-gradient(145deg,#4d352b,#1f1714)}.king-checker:after{content:"";width:46%;aspect-ratio:1;border-radius:50%;border:2px solid currentColor}.white-checker.king-checker{color:#563a2594}.black-checker.king-checker{color:#f4e1be94}.chess-piece{font-size:clamp(1.7rem,5.9vw,4.9rem);line-height:1}.white-piece{color:#fff8e9;text-shadow:0 3px 8px rgba(0,0,0,.3)}.black-piece{color:var(--text);text-shadow:0 2px 0 rgba(255,255,255,.22)}.side-panel{display:flex;flex-direction:column;gap:14px;min-width:0}.round-icon{display:grid;place-items:center;width:56px;height:56px;border-radius:8px;background:var(--accent-soft)}.status-box{border-left:5px solid var(--secondary);border-radius:6px;padding:16px;color:var(--text);background:var(--secondary-soft);font-weight:800}.next-step-box{border:1px solid color-mix(in srgb,var(--accent) 24%,transparent);border-radius:6px;padding:16px;color:var(--next-text);background:var(--next-bg);line-height:1.55;font-weight:750}input[type=range]{accent-color:var(--secondary)}.action-row{display:flex;gap:10px;margin-top:10px}.action-row .primary-button{flex:1}.final-panel{grid-template-columns:minmax(0,.9fr) minmax(280px,460px)}.ticket-preview{position:relative;min-height:250px;overflow:hidden;border:2px dashed var(--input-line);border-radius:8px;background:var(--card);transform:translateY(20px) rotate(-1deg);opacity:.86;transition:.42s ease}.ticket-preview.revealed{opacity:1;transform:translateY(0) rotate(0);box-shadow:0 18px 50px var(--shadow)}.ticket-preview img{display:block;width:100%;aspect-ratio:16 / 10;object-fit:cover}.gift-cover{display:grid;place-items:center;align-content:center;gap:12px;min-height:310px;padding:28px;text-align:center;background:linear-gradient(135deg,rgba(112,70,52,.16),transparent 36%),linear-gradient(315deg,rgba(189,143,62,.2),transparent 36%),#fff9f2}.gift-cover svg{color:var(--accent)}.ticket-caption{display:grid;gap:8px;padding:20px}.download-button{width:fit-content;text-decoration:none}.gift-button{position:absolute;left:-9999px}.final-panel{position:relative}.final-panel .gift-button{position:static;align-self:end}@media (max-width: 860px){.hero-panel,.quest-grid,.final-panel{grid-template-columns:1fr;min-height:auto}.quest-grid{padding:16px}.board-grid{border-width:6px}}@media (max-width: 520px){.app-shell{width:min(100vw - 20px,1180px);padding-top:18px}.hero-panel{padding:20px}.checker-piece,.chess-piece{max-width:48px}.chess-piece{font-size:clamp(1.4rem,9vw,3rem)}}