.sudoku-landing{width:100%;max-width:1180px;margin:0 auto;padding:16px 20px 96px}.sudoku-breadcrumbs{color:var(--color-muted,#64748b);align-items:center;gap:8px;margin-bottom:24px;font-size:.875rem;display:flex}.sudoku-breadcrumbs a{color:var(--color-primary,#0284c7);text-decoration:none}.sudoku-breadcrumbs a:hover{text-decoration:underline}.sudoku-hero{border-bottom:1px solid var(--color-border,#e2e8f0);grid-template-columns:minmax(0,1.7fr) minmax(280px,1fr);gap:48px;padding:24px 0 48px;display:grid}.sudoku-hero-identity{align-items:center;gap:16px;margin-bottom:18px;display:flex}.sudoku-app-icon{background:linear-gradient(135deg,#1e293b 0%,#0f172a 100%);border:1px solid #ffffff26;border-radius:16px;flex-shrink:0;justify-content:center;align-items:center;width:72px;height:72px;font-size:2rem;display:flex;box-shadow:0 8px 24px -4px #0000001f}.sudoku-hero-badges{flex-direction:column;gap:4px;display:flex}.sudoku-eyebrow{letter-spacing:.06em;text-transform:uppercase;color:var(--color-primary,#0284c7);font-size:.78rem;font-weight:700}.sudoku-app-name{color:var(--color-text,#0f172a);margin:0;font-size:1.15rem;font-weight:750}.sudoku-hero-title{color:var(--color-text,#0f172a);letter-spacing:-.02em;margin:0 0 16px;font-size:clamp(2rem,3.5vw,2.85rem);font-weight:800;line-height:1.22}.sudoku-hero-deck{color:var(--color-muted-text,#475569);max-width:60ch;margin:0 0 28px;font-size:1.1rem;line-height:1.68}.sudoku-store-status{background:var(--color-surface,#f8fafc);border:1px dashed var(--color-border-control,#cbd5e1);color:var(--color-muted-text,#334155);border-radius:12px;align-items:center;gap:12px;padding:14px 20px;font-size:.92rem;display:inline-flex}.sudoku-store-badge{color:#0284c7;background:#0284c71a;border-radius:6px;align-items:center;gap:6px;padding:4px 10px;font-size:.82rem;font-weight:700;display:inline-flex}.sudoku-facts-card{background:var(--color-feature-bg,#f1f5f9);color:var(--color-feature-text,#0f172a);border:1px solid var(--color-border,#e2e8f0);border-radius:16px;align-self:start;padding:28px}.sudoku-facts-card h2{color:var(--color-text,#0f172a);margin:0 0 18px;font-size:1.15rem;font-weight:750}.sudoku-facts-list{flex-direction:column;gap:14px;display:flex}.sudoku-fact-item{flex-direction:column;gap:2px;display:flex}.sudoku-fact-label{text-transform:uppercase;letter-spacing:.04em;color:var(--color-muted,#64748b);font-size:.8rem;font-weight:600}.sudoku-fact-value{color:var(--color-text,#0f172a);font-size:.98rem;font-weight:650}.sudoku-facts-footer{border-top:1px solid var(--color-border,#cbd5e1);color:var(--color-muted,#64748b);margin-top:20px;padding-top:16px;font-size:.85rem}.sudoku-section{border-bottom:1px solid var(--color-border,#e2e8f0);padding:48px 0}.sudoku-section-header{margin-bottom:32px}.sudoku-section-eyebrow{letter-spacing:.05em;text-transform:uppercase;color:var(--color-primary,#0284c7);margin-bottom:6px;font-size:.8rem;font-weight:700}.sudoku-section-title{color:var(--color-text,#0f172a);margin:0 0 10px;font-size:clamp(1.4rem,2.2vw,1.85rem);font-weight:750}.sudoku-section-subtitle{color:var(--color-muted-text,#475569);max-width:68ch;margin:0;font-size:1.02rem;line-height:1.62}.sudoku-features-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:24px;display:grid}.sudoku-feature-card{background:var(--color-surface,#fff);border:1px solid var(--color-border,#e2e8f0);border-radius:14px;padding:24px;transition:transform .2s,box-shadow .2s,border-color .2s;box-shadow:0 2px 10px -2px #0000000a}.sudoku-feature-card:hover{border-color:#0284c759;transform:translateY(-2px);box-shadow:0 8px 24px -4px #00000014}.sudoku-feature-icon{color:#0284c7;background:#0284c714;border-radius:10px;justify-content:center;align-items:center;width:44px;height:44px;margin-bottom:16px;font-size:1.35rem;display:inline-flex}.sudoku-feature-title{color:var(--color-text,#0f172a);margin:0 0 8px;font-size:1.12rem;font-weight:700}.sudoku-feature-desc{color:var(--color-muted-text,#475569);margin:0;font-size:.94rem;line-height:1.62}.sudoku-board-card{background:var(--color-surface,#fff);border:1px solid var(--color-border,#e2e8f0);border-radius:16px;flex-direction:column;align-items:center;gap:24px;padding:32px;display:flex;box-shadow:0 4px 20px -2px #0000000d}.sudoku-board-grid{-webkit-user-select:none;user-select:none;background:#cbd5e1;border:3px solid #334155;border-radius:8px;grid-template-rows:repeat(9,36px);grid-template-columns:repeat(9,36px);gap:1px;padding:3px;display:grid;box-shadow:0 6px 18px -3px #0000001a}.sudoku-cell{color:#0f172a;background:#fff;justify-content:center;align-items:center;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:1rem;font-weight:700;display:flex}.sudoku-cell-given{color:#0284c7;font-weight:800}.sudoku-cell-empty{color:#0000}.sudoku-cell:nth-child(3n){border-inline-end:2px solid #334155}.sudoku-cell:nth-child(n+19):nth-child(-n+27),.sudoku-cell:nth-child(n+46):nth-child(-n+54){border-bottom:2px solid #334155}.sudoku-board-caption{color:var(--color-muted,#64748b);text-align:center;max-width:52ch;font-size:.92rem;line-height:1.55}.sudoku-legal-box{background:var(--color-feature-bg,#f8fafc);border:1px solid var(--color-border,#e2e8f0);border-radius:14px;grid-template-columns:minmax(0,1.8fr) minmax(220px,1fr);align-items:center;gap:32px;padding:28px;display:grid}.sudoku-legal-text h3{color:var(--color-text,#0f172a);margin:0 0 10px;font-size:1.18rem;font-weight:750}.sudoku-legal-text p{color:var(--color-muted-text,#475569);margin:0;font-size:.94rem;line-height:1.62}.sudoku-legal-links{flex-direction:column;gap:10px;display:flex}.sudoku-legal-link-btn{background:var(--color-surface,#fff);border:1px solid var(--color-border,#cbd5e1);color:var(--color-primary,#0284c7);border-radius:8px;justify-content:space-between;align-items:center;padding:10px 16px;font-size:.9rem;font-weight:600;text-decoration:none;transition:background .15s,border-color .15s;display:inline-flex}.sudoku-legal-link-btn:hover{background:#0284c70d;border-color:#0284c7}.sudoku-related-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;display:grid}.sudoku-related-card{background:var(--color-surface,#fff);border:1px solid var(--color-border,#e2e8f0);color:inherit;border-radius:14px;flex-direction:column;gap:12px;padding:22px;text-decoration:none;transition:transform .18s,box-shadow .18s,border-color .18s;display:flex}.sudoku-related-card:hover{border-color:#0284c7;transform:translateY(-2px);box-shadow:0 6px 18px -2px #00000014}.sudoku-related-header{align-items:center;gap:12px;display:flex}.sudoku-related-icon{background:#f1f5f9;border-radius:10px;justify-content:center;align-items:center;width:44px;height:44px;font-size:1.3rem;display:flex}.sudoku-related-title{color:var(--color-text,#0f172a);margin:0;font-size:1.05rem;font-weight:750}.sudoku-related-excerpt{color:var(--color-muted-text,#475569);margin:0;font-size:.9rem;line-height:1.55}[data-theme=dark] .sudoku-hero{border-bottom-color:#ffffff1a}[data-theme=dark] .sudoku-hero-title,[data-theme=dark] .sudoku-app-name,[data-theme=dark] .sudoku-section-title,[data-theme=dark] .sudoku-feature-title,[data-theme=dark] .sudoku-legal-text h3,[data-theme=dark] .sudoku-related-title,[data-theme=dark] .sudoku-fact-value{color:#f8fafc}[data-theme=dark] .sudoku-hero-deck,[data-theme=dark] .sudoku-section-subtitle,[data-theme=dark] .sudoku-feature-desc,[data-theme=dark] .sudoku-legal-text p,[data-theme=dark] .sudoku-related-excerpt{color:#cbd5e1}[data-theme=dark] .sudoku-store-status{color:#cbd5e1;background:#ffffff0a;border-color:#ffffff26}[data-theme=dark] .sudoku-facts-card{color:#f8fafc;background:#1e293b;border-color:#ffffff1a}[data-theme=dark] .sudoku-feature-card,[data-theme=dark] .sudoku-board-card,[data-theme=dark] .sudoku-legal-box,[data-theme=dark] .sudoku-related-card{background:#1e293b;border-color:#ffffff1a}[data-theme=dark] .sudoku-board-grid{background:#475569;border-color:#94a3b8}[data-theme=dark] .sudoku-cell{color:#f8fafc;background:#0f172a}[data-theme=dark] .sudoku-cell-given{color:#38bdf8}[data-theme=dark] .sudoku-legal-link-btn{color:#38bdf8;background:#0f172a;border-color:#ffffff26}@media (max-width:860px){.sudoku-hero{grid-template-columns:1fr;gap:32px}.sudoku-legal-box{grid-template-columns:1fr;gap:24px}}@media (max-width:640px){.sudoku-landing{padding:12px 14px 84px}.sudoku-hero{gap:24px;padding:16px 0 32px}.sudoku-app-icon{border-radius:12px;width:60px;height:60px;font-size:1.65rem}.sudoku-hero-title{margin-bottom:12px;font-size:1.7rem;line-height:1.25}.sudoku-hero-deck{margin-bottom:20px;font-size:.98rem;line-height:1.6}.sudoku-store-status{flex-direction:column;align-items:flex-start;width:100%;padding:12px 16px}.sudoku-section{padding:32px 0}.sudoku-features-grid{grid-template-columns:1fr;gap:16px}.sudoku-board-card{padding:20px 14px}.sudoku-board-grid{grid-template-rows:repeat(9,28px);grid-template-columns:repeat(9,28px)}.sudoku-cell{font-size:.8rem}}[dir=rtl] .sudoku-hero-identity,[dir=rtl] .sudoku-breadcrumbs{flex-direction:row}