:root{color-scheme:light;--bg: #f2f2f7;--surface: #ffffff;--surface-muted: #e5e5ea;--text: #111111;--text-secondary: #3a3a3c;--text-muted: #8e8e93;--primary: #007aff;--primary-soft: #e5f1ff;--border: #e5e5ea;--warning-bg: #fff3cd;--warning-text: #856404;--note-bg: #d1ecf1;--note-text: #0c5460;--success: #34c759;--safe-top: env(safe-area-inset-top, 0px);--safe-right: env(safe-area-inset-right, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);--safe-left: env(safe-area-inset-left, 0px);--nav-height: 64px;--font: "Segoe UI", "SF Pro Display", "Helvetica Neue", sans-serif}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;font-family:var(--font);background:linear-gradient(180deg,#eef3fb 0%,var(--bg) 42%,#eceff5 100%);color:var(--text)}a{color:inherit;text-decoration:none}button,input{font:inherit}.app-shell{min-height:100dvh;padding:calc(12px + var(--safe-top)) calc(16px + var(--safe-right)) calc(24px + var(--safe-bottom)) calc(16px + var(--safe-left))}.app-frame{width:min(1100px,100%);margin:0 auto}.top-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;min-height:var(--nav-height)}.brand{font-size:1.35rem;font-weight:800;letter-spacing:-.02em}.ghost-btn,.primary-btn,.nav-btn{border:0;border-radius:14px;padding:12px 16px;cursor:pointer;transition:transform .15s ease,opacity .15s ease,background .15s ease}.ghost-btn:active,.primary-btn:active,.nav-btn:active{transform:scale(.985)}.ghost-btn,.nav-btn{background:var(--surface);color:var(--text);box-shadow:0 8px 24px #0000000d}.primary-btn{background:var(--primary);color:#fff;font-weight:700}.primary-btn:disabled,.nav-btn:disabled{opacity:.45;cursor:not-allowed}.eyebrow{margin:0 0 8px;font-size:.8rem;font-weight:700;letter-spacing:.12em;color:var(--text-muted);text-transform:uppercase}h1,h2,h3{margin:0;letter-spacing:-.02em}.subtitle{margin:10px 0 0;color:#636366;line-height:1.45}.search-box{display:flex;align-items:center;gap:10px;margin:22px 0 28px;padding:0 16px;height:56px;background:var(--surface);border-radius:18px;box-shadow:0 8px 24px #0000000d}.search-box input{flex:1;border:0;outline:none;background:transparent;font-size:1.05rem}.game-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}@media(min-width:900px){.game-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(orientation:landscape)and (min-width:900px){.game-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}.game-card{display:block;background:var(--surface);border-radius:22px;overflow:hidden;box-shadow:0 10px 28px #0000000f;transition:transform .18s ease,box-shadow .18s ease}.game-card:hover{transform:translateY(-2px);box-shadow:0 14px 32px #00000014}.game-card-cover{position:relative;display:grid;place-items:center;min-height:140px;background:linear-gradient(160deg,#f8fafc,#e8eef8);padding:18px}.game-card-cover img{max-width:78%;max-height:96px;object-fit:contain}.badge{position:absolute;top:12px;left:12px;padding:6px 10px;border-radius:10px;background:#ffffffe6;font-size:.68rem;font-weight:800;letter-spacing:.06em;color:#636366}.game-card-body{padding:14px 16px 18px}.game-card-body h2{font-size:1.1rem}.meta{margin-top:6px;color:var(--text-muted);font-size:.9rem;line-height:1.35}.hub-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-top:22px}.hub-tile{display:block;padding:18px 16px;border-radius:18px;background:var(--surface);box-shadow:0 8px 22px #0000000d;font-weight:700}.hub-tile span{display:block;margin-top:6px;font-weight:500;color:var(--text-muted);font-size:.88rem}.reader-layout{display:grid;gap:16px}@media(min-width:960px){.reader-layout{grid-template-columns:280px minmax(0,1fr);align-items:start}}.toc,.reader-panel,.panel{background:var(--surface);border-radius:22px;box-shadow:0 10px 28px #0000000d}.toc,.reader-panel,.panel{padding:18px}.toc h2{margin-bottom:12px;font-size:1.05rem}.toc-list{display:flex;flex-direction:column;gap:6px;max-height:min(70vh,720px);overflow:auto}.toc-item{text-align:left;border:0;background:transparent;border-radius:12px;padding:10px 12px;cursor:pointer;color:var(--text-secondary)}.toc-item.active{background:var(--primary-soft);color:var(--primary);font-weight:700}.toc-item.read{color:var(--success)}.reader-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.nav-btn.marked{background:var(--primary-soft);color:var(--primary)}.expansion-list{display:grid;gap:10px;margin-top:16px;position:relative;z-index:1;pointer-events:auto}.expansion-row{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border-radius:16px;background:var(--surface-muted);cursor:pointer;-webkit-user-select:none;user-select:none;pointer-events:auto}.expansion-row.locked{opacity:.85;cursor:default}.expansion-row input{width:20px;height:20px;margin-top:2px;flex-shrink:0;pointer-events:auto;accent-color:var(--primary)}.expansion-copy{display:grid;gap:4px}.expansion-copy strong{font-size:1.02rem}.expansion-copy span,.expansion-copy em{color:var(--text-muted);font-size:.9rem;font-style:normal;line-height:1.4}.progress-track{position:sticky;top:calc(8px + var(--safe-top));z-index:5;height:4px;margin:0 0 14px;border-radius:999px;background:var(--surface-muted);overflow:hidden}.progress-bar{height:100%;background:var(--primary);width:0%;transition:width .12s linear}.chapter-nav{position:sticky;bottom:calc(12px + var(--safe-bottom));z-index:6;display:flex;gap:10px;margin-top:18px;padding:10px;border-radius:18px;background:#ffffffeb;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 10px 30px #00000014}.chapter-nav .nav-btn{flex:1;text-align:center;font-weight:700}.content-stack{display:grid;gap:12px}.block-heading{margin-top:8px;font-size:1.15rem}.block-p{margin:0;line-height:1.55;color:var(--text-secondary)}.block-list{margin:0;padding-left:1.2rem;color:var(--text-secondary);line-height:1.5}.block-tip,.block-warning,.block-checklist{padding:12px 14px;border-radius:14px}.block-tip{background:var(--note-bg);color:var(--note-text)}.block-warning{background:var(--warning-bg);color:var(--warning-text)}.block-checklist{background:#f4f7fb}.block-checklist label{display:flex;gap:10px;align-items:flex-start;margin:8px 0;cursor:pointer}.update-banner{position:sticky;top:calc(8px + var(--safe-top));z-index:20;display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;margin-bottom:14px;padding:12px 14px;border-radius:16px;background:#111827;color:#fff}.empty{padding:40px 24px;text-align:center;background:var(--surface);border-radius:22px}.qr-box{margin-top:18px;padding:18px;border-radius:18px;background:#111;color:#fff;word-break:break-all}.offline-pill{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:var(--surface-muted);color:var(--text-muted);font-size:.8rem;font-weight:700}