:root{--bg:#f4f6fb;--surface:#fff;--surface-2:#eef1f8;--border:#d9dee9;--border-strong:#334155;--text:#1f2937;--text-soft:#5b6472;--text-faint:#8b93a3;--primary:#2f6df6;--primary-soft:#dce8ff;--primary-dark:#1b4fd1;--accent:#0ea5a4;--danger:#e23d4b;--danger-soft:#fde4e6;--success:#16a34a;--given:#1f2937;--entered:#2f6df6;--highlight:#e8f0ff;--highlight-peer:#f0f4fc;--highlight-same:#cfe0ff;--shadow:0 1px 3px #10182814, 0 1px 2px #1018280a;--shadow-lg:0 12px 32px #1018281f;--radius:14px;--radius-sm:9px;--maxw:1120px;--font:"Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif}@media (prefers-color-scheme:dark){:root{--bg:#11151c;--surface:#1a1f28;--surface-2:#222835;--border:#2d3543;--border-strong:#c3cbd9;--text:#e8ecf3;--text-soft:#a9b2c2;--text-faint:#6f7a8c;--primary:#5b8bff;--primary-soft:#223154;--primary-dark:#7aa2ff;--accent:#2dd4bf;--danger:#ff6b76;--danger-soft:#3a1f24;--success:#4ade80;--given:#e8ecf3;--entered:#7aa2ff;--highlight:#1f2b44;--highlight-peer:#1b2230;--highlight-same:#2a3a5e;--shadow:0 1px 3px #0006;--shadow-lg:0 12px 32px #00000080}}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;padding:0;line-height:1.6}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,h4{color:var(--text);margin:0 0 .5em;line-height:1.25}p{margin:0 0 1em}.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}.site-header{z-index:50;background:var(--surface);border-bottom:1px solid var(--border);-webkit-backdrop-filter:saturate(180%)blur(6px);backdrop-filter:saturate(180%)blur(6px);position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:16px;height:64px;display:flex}.brand{color:var(--text);letter-spacing:-.02em;align-items:center;gap:10px;font-size:1.3rem;font-weight:800;display:flex}.brand:hover{text-decoration:none}.logo-mark{flex:none;display:block}.brand-mark{background:var(--primary);color:#fff;border-radius:9px;place-items:center;width:34px;height:34px;font-size:1.05rem;font-weight:800;display:inline-grid}.brand-mark span{transform:translateY(-1px)}.nav{align-items:center;gap:4px;display:flex}.nav a{color:var(--text-soft);white-space:nowrap;border-radius:8px;padding:8px 12px;font-size:.94rem;font-weight:600}@media (max-width:1240px){.nav a{padding:8px;font-size:.9rem}}.nav a:hover{background:var(--surface-2);color:var(--text);text-decoration:none}.nav-toggle{border:1px solid var(--border);cursor:pointer;color:var(--text);background:0 0;border-radius:8px;padding:8px 10px;display:none}@media (max-width:1080px){.nav{background:var(--surface);border-bottom:1px solid var(--border);flex-direction:column;align-items:stretch;gap:2px;padding:8px 16px 16px;display:none;position:absolute;top:64px;left:0;right:0}.nav.open{display:flex}.nav a{padding:12px}.nav-toggle{display:inline-flex}}.site-footer{background:var(--surface);border-top:1px solid var(--border);color:var(--text-soft);margin-top:56px;padding:40px 0 28px;font-size:.92rem}.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;display:grid}.footer-grid h4{text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint);margin-bottom:14px;font-size:.82rem}.footer-links{flex-direction:column;gap:9px;margin:0;padding:0;list-style:none;display:flex}.footer-links a{color:var(--text-soft)}.footer-bottom{border-top:1px solid var(--border);color:var(--text-faint);flex-wrap:wrap;justify-content:space-between;gap:10px;margin-top:32px;padding-top:20px;font-size:.86rem;display:flex}@media (max-width:720px){.footer-grid{grid-template-columns:1fr 1fr;gap:24px}}@media (max-width:460px){.footer-grid{grid-template-columns:1fr}}.game-layout{grid-template-columns:minmax(0,560px) 300px;justify-content:center;align-items:start;gap:28px;padding:28px 0 8px;display:grid}@media (max-width:920px){.game-layout{grid-template-columns:minmax(0,560px)}}.game-main{width:100%}.game-topbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px;display:flex}.stat-group{flex-wrap:wrap;gap:18px;display:flex}.stat{color:var(--text-faint);text-transform:uppercase;letter-spacing:.04em;flex-direction:column;font-size:.74rem;display:flex}.stat b{color:var(--text);font-variant-numeric:tabular-nums;letter-spacing:0;text-transform:none;font-size:1.05rem}.stat.danger b{color:var(--danger)}.difficulty-bar{flex-wrap:wrap;gap:6px;margin-bottom:16px;display:flex}.difficulty-bar button{border:1px solid var(--border);background:var(--surface);color:var(--text-soft);cursor:pointer;border-radius:999px;padding:7px 13px;font-size:.85rem;font-weight:600;transition:all .12s}.difficulty-bar button:hover{border-color:var(--primary);color:var(--primary)}.difficulty-bar button.active{background:var(--primary);border-color:var(--primary);color:#fff}.board-wrap{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:12px;position:relative}.board{aspect-ratio:1;border:2.5px solid var(--border-strong);background:var(--border);border-radius:6px;grid-template-rows:repeat(9,minmax(0,1fr));grid-template-columns:repeat(9,minmax(0,1fr));gap:1px;width:100%;display:grid;overflow:hidden}.cell{background:var(--surface);color:var(--entered);cursor:pointer;-webkit-user-select:none;user-select:none;place-items:center;font-size:clamp(1.1rem,4.6vw,1.9rem);font-weight:600;transition:background .1s;display:grid;position:relative}.cell.given{color:var(--given);font-weight:700}.cell.peer{background:var(--highlight-peer)}.cell.same-value{background:var(--highlight-same)}.cell.selected{background:var(--highlight);box-shadow:inset 0 0 0 2px var(--primary);z-index:2}.cell.conflict{color:var(--danger)}.cell.conflict.selected{box-shadow:inset 0 0 0 2px var(--danger)}.cell:nth-child(3n):not(:nth-child(9n)){border-right:2px solid var(--border-strong)}.board>.cell:nth-child(n+19):nth-child(-n+27),.board>.cell:nth-child(n+46):nth-child(-n+54){border-bottom:2px solid var(--border-strong)}.cell-notes{grid-template-columns:repeat(3,1fr);width:100%;height:100%;padding:2px;display:grid}.cell-note{color:var(--text-faint);place-items:center;font-size:clamp(.5rem,1.7vw,.72rem);font-weight:600;line-height:1;display:grid}.controls{margin-top:18px}.action-row{grid-template-columns:repeat(5,1fr);gap:8px;margin-bottom:14px;display:grid}.action-btn{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;color:var(--text-soft);flex-direction:column;align-items:center;gap:3px;padding:10px 4px;font-size:.74rem;font-weight:600;transition:all .12s;display:flex}.action-btn:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}.action-btn:disabled{opacity:.4;cursor:not-allowed}.action-btn .ico{font-size:1.25rem;line-height:1}.action-btn .badge{background:var(--primary);color:#fff;border-radius:999px;margin-top:-8px;margin-left:22px;padding:1px 5px;font-size:.6rem;position:absolute}.action-btn.on{background:var(--primary);border-color:var(--primary);color:#fff}.keypad{grid-template-columns:repeat(9,1fr);gap:7px;display:grid}@media (max-width:420px){.keypad{grid-template-columns:repeat(5,1fr)}}.key{aspect-ratio:1/1.15;border:1px solid var(--border);background:var(--surface);color:var(--primary);border-radius:var(--radius-sm);cursor:pointer;font-size:1.5rem;font-weight:600;transition:all .1s;position:relative}.key:hover:not(:disabled){background:var(--primary-soft)}.key:disabled{opacity:.3;cursor:not-allowed}.key .count{color:var(--text-faint);font-size:.6rem;font-weight:600;position:absolute;bottom:3px;left:0;right:0}.side-panel{flex-direction:column;gap:18px;display:flex}.panel-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}.panel-card h3{text-transform:uppercase;letter-spacing:.05em;color:var(--text-faint);margin-bottom:12px;font-size:.78rem}.btn{background:var(--primary);color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:none;justify-content:center;align-items:center;gap:8px;width:100%;padding:11px 18px;font-size:.95rem;font-weight:700;transition:background .12s;display:inline-flex}.btn:hover{background:var(--primary-dark)}.btn.secondary{background:var(--surface-2);color:var(--text)}.btn.secondary:hover{background:var(--border)}.ad-slot{background:var(--surface-2);border:1px dashed var(--border);border-radius:var(--radius-sm);min-height:90px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.08em;justify-content:center;align-items:center;font-size:.72rem;display:flex}.ad-slot.tall{min-height:250px}.overlay{border-radius:var(--radius);z-index:20;background:#1018288c;place-items:center;padding:20px;display:grid;position:absolute;inset:0}.overlay-card{background:var(--surface);border-radius:var(--radius);text-align:center;max-width:320px;box-shadow:var(--shadow-lg);padding:28px 26px}.overlay-card .emoji{font-size:2.6rem}.overlay-card h2{margin:8px 0 4px}.overlay-card p{color:var(--text-soft);margin-bottom:18px}.loading-spinner{border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;width:34px;height:34px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.board-loading{background:var(--surface);border-radius:var(--radius);z-index:15;place-items:center;display:grid;position:absolute;inset:0}.page{padding:36px 0 10px}.page-narrow{max-width:760px;margin:0 auto}.page h1{letter-spacing:-.02em;font-size:clamp(1.7rem,4vw,2.4rem)}.page .lead{color:var(--text-soft);margin-bottom:28px;font-size:1.12rem}.page h2{margin-top:36px;font-size:1.4rem}.page h3{margin-top:24px;font-size:1.12rem}.page ul,.page ol{margin:0 0 1em;padding-left:1.3em}.page li{margin-bottom:.5em}.breadcrumb{color:var(--text-faint);margin-bottom:14px;font-size:.85rem}.meta-note{color:var(--text-faint);border-top:1px solid var(--border);margin-top:36px;padding-top:16px;font-size:.85rem}.hero{text-align:center;padding:10px 0 4px}.hero h1{letter-spacing:-.03em;margin-bottom:8px;font-size:clamp(1.8rem,4.5vw,2.6rem)}.hero p{color:var(--text-soft);max-width:620px;margin:0 auto;font-size:1.05rem}.feature-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin:28px 0;display:grid}.feature{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px}.feature .fico{margin-bottom:8px;font-size:1.6rem}.feature h3{margin:0 0 6px;font-size:1.05rem}.feature p{color:var(--text-soft);margin:0;font-size:.94rem}.contact-form{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);flex-direction:column;gap:14px;padding:24px;display:flex}.contact-form label{flex-direction:column;gap:6px;font-size:.9rem;font-weight:600;display:flex}.contact-form input,.contact-form textarea{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);color:var(--text);padding:11px 13px;font-family:inherit;font-size:.95rem}.contact-form input:focus,.contact-form textarea:focus{border-color:var(--primary);outline:none}.form-note{border-radius:var(--radius-sm);background:var(--primary-soft);color:var(--text);padding:11px 13px;font-size:.85rem}.visually-hidden{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.post-list{flex-direction:column;gap:16px;margin-top:8px;display:flex}.post-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);box-shadow:var(--shadow);padding:22px 24px;transition:border-color .12s,transform .12s;display:block}.post-card:hover{border-color:var(--primary);text-decoration:none;transform:translateY(-2px)}.post-card h2{margin:0 0 8px;font-size:1.25rem}.post-card p{color:var(--text-soft);margin:0 0 12px;font-size:.96rem}.post-card-meta{color:var(--text-faint);font-size:.84rem}.post-card-tags{flex-wrap:wrap;gap:6px;margin-bottom:10px;display:flex}.tag{text-transform:uppercase;letter-spacing:.04em;color:var(--primary);background:var(--primary-soft);border-radius:999px;padding:3px 9px;font-size:.72rem;font-weight:700;display:inline-block}.cta-box{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);text-align:center;margin:36px 0;padding:26px}.cta-box h3{margin:0 0 6px;font-size:1.15rem}.cta-box p{color:var(--text-soft);margin:0 0 16px}.tabular{font-variant-numeric:tabular-nums}@media (max-width:380px){.hide-xs{display:none!important}}.pause-btn{border:1px solid var(--border);background:var(--surface);width:42px;height:42px;color:var(--text);cursor:pointer;box-shadow:var(--shadow);border-radius:50%;place-items:center;transition:background .12s,border-color .12s,color .12s;display:inline-grid}.pause-btn:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}.pause-btn:disabled{opacity:.4;cursor:not-allowed}.pause-btn:focus-visible,.btn:focus-visible,.action-btn:focus-visible,.key:focus-visible,.difficulty-bar button:focus-visible{outline:3px solid var(--primary);outline-offset:2px}.btn:disabled{opacity:.55;cursor:not-allowed}.board.is-hidden .cell{cursor:default}.overlay-solid{background:var(--surface)}.overlay-solid .overlay-card{box-shadow:none;border:1px solid var(--border)}.overlay-kicker{text-transform:uppercase;letter-spacing:.08em;color:var(--primary);font-size:.74rem;font-weight:700}.overlay-card .btn svg{flex-shrink:0}.level-hero{flex-direction:column;align-items:center;gap:8px;display:flex}.level-badge{color:var(--text-soft);background:var(--surface);border:1px solid var(--border);border-radius:999px;align-items:center;gap:8px;padding:4px 12px;font-size:.8rem;font-weight:700;display:inline-flex}.level-meter{gap:3px;display:inline-flex}.level-meter i{background:var(--border);border-radius:2px;width:7px;height:12px}.level-meter i.on{background:var(--primary)}.level-grid{grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px;margin:22px 0 8px;display:grid}.level-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);flex-direction:column;gap:6px;padding:16px 18px;transition:border-color .12s,transform .12s;display:flex}.level-card:hover{border-color:var(--primary);text-decoration:none;transform:translateY(-2px)}.level-card.current{border-color:var(--primary);background:var(--primary-soft)}.level-card strong{font-size:1.05rem}.level-card span{color:var(--text-soft);font-size:.86rem}.facts{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:18px 0 24px;display:grid}.fact{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px}.fact small{text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint);font-size:.72rem;font-weight:700;display:block}.fact b{font-size:1.05rem}.faq{flex-direction:column;gap:10px;margin:16px 0 8px;display:flex}.faq details{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:0 16px}.faq summary{cursor:pointer;justify-content:space-between;gap:12px;padding:14px 0;font-weight:700;list-style:none;display:flex}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";color:var(--primary);font-size:1.2rem;line-height:1}.faq details[open] summary:after{content:"−"}.faq details p{color:var(--text-soft);margin:0 0 14px}.cover{border-radius:var(--radius);border:1px solid var(--border);background:var(--surface-2);width:100%;height:auto;margin:6px 0 26px;display:block}.post-card.with-thumb{grid-template-columns:220px 1fr;align-items:center;gap:20px;display:grid}.post-thumb{border-radius:var(--radius-sm);background:var(--surface-2);width:100%;height:auto}.post-card.compact{padding:0;overflow:hidden}.post-card.compact .post-thumb{border-radius:0}.post-card.compact .post-card-body{padding:14px 18px 18px}.related-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;display:grid}@media (max-width:640px){.post-card.with-thumb{grid-template-columns:1fr;gap:14px}}.lvl-easy{--lvl:#16a34a}.lvl-medium{--lvl:#0ea5a4}.lvl-hard{--lvl:#2f6df6}.lvl-expert{--lvl:#7c3aed}.lvl-master{--lvl:#db2777}.lvl-evil{--lvl:#e23d4b}@media (prefers-color-scheme:dark){.lvl-easy{--lvl:#4ade80}.lvl-medium{--lvl:#2dd4bf}.lvl-hard{--lvl:#7aa2ff}.lvl-expert{--lvl:#a78bfa}.lvl-master{--lvl:#f472b6}.lvl-evil{--lvl:#ff6b76}}.daily-strip{min-height:38px;color:var(--text-soft);flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px;font-size:.95rem;display:flex}.daily-strip b{color:var(--text);font-size:1.05rem}.daily-badge{background:var(--primary);color:#fff;text-transform:uppercase;letter-spacing:.08em;border-radius:999px;padding:4px 10px;font-size:.72rem;font-weight:800}.daily-level{color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:3px 10px;font-size:.85rem;font-weight:700}.countdown b{color:var(--text)}.result-chips{flex-wrap:wrap;justify-content:center;gap:8px;margin:-6px 0 16px;display:flex}.chip{border-radius:999px;padding:5px 11px;font-size:.82rem;font-weight:700}.chip-gold{color:#8a5a00;background:#fff4d6}.chip-fire{color:#9a3412;background:#ffe6d5}@media (prefers-color-scheme:dark){.chip-gold{color:#fcd34d;background:#3d3216}.chip-fire{color:#fdba74;background:#3d2316}}.overlay-sub{font-size:.9rem;margin:-6px 0 14px!important}.overlay-card a.btn,.panel-card a.btn{text-decoration:none}.overlay-link,.panel-link{margin-top:12px;font-size:.88rem;font-weight:600;display:inline-block}.schedule{grid-template-columns:repeat(7,1fr);gap:8px;margin:18px 0 8px;display:grid}.schedule-day{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);text-align:center;flex-direction:column;gap:2px;padding:10px 6px;display:flex}.schedule-day span{text-transform:uppercase;color:var(--text-faint);font-size:.75rem;font-weight:700}.schedule-day b{color:var(--lvl);font-size:.86rem}@media (max-width:560px){.schedule{grid-template-columns:repeat(4,1fr)}}.day-nav{justify-content:space-between;align-items:center;max-width:888px;margin:14px auto 0;font-size:.92rem;font-weight:600;display:flex}.archive-month h2{margin:28px 0 10px;font-size:1.15rem}.archive-list{gap:8px;margin:0;list-style:none;display:grid;padding:0!important}.archive-list li{margin:0!important}.archive-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);grid-template-columns:56px 1fr auto 90px;align-items:center;gap:12px;padding:10px 14px;display:grid}.archive-item:hover{border-color:var(--primary);text-decoration:none}.archive-num{color:var(--text-faint);font-weight:800}.archive-level{color:var(--lvl);font-size:.78rem;font-weight:700}.archive-status{text-align:right;color:var(--primary);font-variant-numeric:tabular-nums;font-size:.86rem;font-weight:700}.archive-item.solved .archive-status{color:var(--success)}@media (max-width:480px){.archive-item{grid-template-columns:44px 1fr auto}.archive-level{display:none}}.stats-skeleton{border-radius:var(--radius);background:var(--surface-2);height:220px}.stat-tiles{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin:18px 0 8px;display:grid}.stat-tile{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);flex-direction:column;gap:2px;padding:16px 18px;display:flex}.stat-tile.accent{border-color:var(--primary);background:var(--primary-soft)}.stat-tile small{text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint);font-size:.72rem;font-weight:700}.stat-tile b{font-variant-numeric:tabular-nums;font-size:1.8rem;line-height:1.2}.stat-tile b span{color:var(--text-soft);font-size:1rem;font-weight:600}.stat-tile em{color:var(--text-soft);font-size:.85rem;font-style:normal}.table-wrap{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);overflow-x:auto}.stats-table{border-collapse:collapse;width:100%;font-size:.93rem}.stats-table th,.stats-table td{text-align:left;border-bottom:1px solid var(--border);white-space:nowrap;padding:11px 14px}.stats-table thead th{text-transform:uppercase;letter-spacing:.05em;color:var(--text-faint);font-size:.74rem}.stats-table tbody tr:last-child th,.stats-table tbody tr:last-child td{border-bottom:none}.link-btn{color:var(--danger);font:inherit;cursor:pointer;background:0 0;border:none;padding:0;font-weight:600;text-decoration:underline}.cta-row{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}.seg{background:var(--surface-2);border:1px solid var(--border);border-radius:999px;gap:2px;padding:3px;display:inline-flex}.seg.wrap{border-radius:var(--radius-sm);flex-wrap:wrap}.seg button{color:var(--text-soft);cursor:pointer;background:0 0;border:none;border-radius:999px;padding:7px 14px;font-size:.9rem;font-weight:700}.seg button.active{background:var(--surface);color:var(--primary);box-shadow:var(--shadow)}.seg button:focus-visible{outline:3px solid var(--primary);outline-offset:1px}.mini-wrap{flex-direction:column;gap:16px;max-width:460px;margin:24px auto 0;display:flex}.mini-options{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}.mini-board-wrap{background:var(--surface);box-shadow:var(--shadow);border-radius:22px;padding:14px;position:relative}.mini-board{gap:12px;display:grid}.mini-box{gap:6px;display:grid}.mini-cell{--c:var(--surface-2);background:var(--surface-2);font:inherit;color:var(--text);cursor:pointer;aspect-ratio:1;border:2px solid #0000;border-radius:14px;place-items:center;min-width:0;padding:0;font-size:clamp(1.6rem,9vw,2.6rem);font-weight:800;line-height:1;transition:transform 80ms,background .12s;display:grid;position:relative}.mini-board.size-6 .mini-cell{border-radius:11px;font-size:clamp(1.2rem,6.5vw,1.9rem)}.mini-cell:not(.given){color:var(--primary-dark)}.mini-cell.d1{background:#ffe9a8}.mini-cell.d2{background:#c7ecff}.mini-cell.d3{background:#c9f7d8}.mini-cell.d4{background:#ffd3ea}.mini-cell.d5{background:#e3dcff}.mini-cell.d6{background:#ffdcc7}.mini-cell[class*=\ d]{color:#1f2937}.mini-cell.given{box-shadow:inset 0 -3px #00000014}.mini-cell.peer:not([class*=\ d]){background:var(--highlight-peer)}.mini-cell.same{border-color:#1f293759}.mini-cell.selected{border-color:var(--primary);z-index:1;transform:scale(1.04)}.mini-cell.bad{border-color:var(--danger);animation:.3s wiggle}@keyframes wiggle{25%{transform:translate(-3px)}75%{transform:translate(3px)}}@media (prefers-reduced-motion:reduce){.mini-cell{transition:none}.mini-cell.bad{animation:none}}.mini-keypad{gap:8px;display:grid}.mini-keypad>*{min-width:0}.mini-key{font:inherit;color:#1f2937;cursor:pointer;border:none;border-radius:14px;padding:14px 0;font-size:1.5rem;font-weight:800;box-shadow:inset 0 -4px #0000001a}.mini-key:active{transform:translateY(2px);box-shadow:inset 0 -2px #0000001a}.mini-key.d1{background:#ffd666}.mini-key.d2{background:#7dd3fc}.mini-key.d3{background:#86efac}.mini-key.d4{background:#f9a8d4}.mini-key.d5{background:#c4b5fd}.mini-key.d6{background:#fdba74}.mini-actions{grid-template-columns:repeat(4,1fr);gap:8px;display:grid}.print-layout{grid-template-columns:minmax(0,380px) minmax(0,1fr);align-items:start;gap:32px;max-width:960px;margin:0 auto;padding:26px 0 8px;display:grid}@media (max-width:820px){.print-layout{grid-template-columns:minmax(0,1fr)}}.print-form{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);flex-direction:column;gap:16px;padding:20px;display:flex}.print-form fieldset{border:none;margin:0;padding:0}.print-form legend,.print-form label{text-transform:uppercase;letter-spacing:.05em;color:var(--text-faint);margin-bottom:8px;font-size:.78rem;font-weight:700}.print-row{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.print-row label{flex-direction:column;gap:6px;margin:0;display:flex}.print-form select{font:inherit;text-transform:none;letter-spacing:0;color:var(--text);background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 10px;font-size:.95rem}.print-form label.check{text-transform:none;letter-spacing:0;color:var(--text);cursor:pointer;align-items:center;gap:10px;margin:0;font-size:.95rem;font-weight:600;display:flex}.print-form input[type=checkbox]{width:18px;height:18px;accent-color:var(--primary)}.print-summary{color:var(--text-soft);margin:0;font-size:.92rem}.print-secondary{grid-template-columns:1fr 1fr;gap:8px;margin-top:-6px;display:grid}.print-preview-wrap{flex-direction:column;align-items:center;display:flex}.print-preview{width:100%;max-width:470px;height:auto;box-shadow:var(--shadow-lg);background:#fff;border-radius:6px;font-family:Helvetica,Arial,sans-serif;display:block}.print-preview.placeholder{background:var(--surface-2)}.print-caption{color:var(--text-faint);margin-top:10px;font-size:.84rem}.ways-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:18px 0 8px;display:grid}.way-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);flex-direction:column;gap:4px;padding:18px;transition:border-color .12s,transform .12s;display:flex}.way-card:hover{border-color:var(--primary);text-decoration:none;transform:translateY(-2px)}.way-card .fico{font-size:1.5rem}.way-card strong{font-size:1.05rem}.way-card span{color:var(--text-soft);font-size:.9rem}.daily-banner{background:var(--surface);border:1px solid var(--border);width:fit-content;max-width:100%;color:var(--text);border-radius:999px;flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;margin:14px auto 0;padding:8px 16px;font-size:.92rem;font-weight:600;display:flex}.daily-banner:hover{border-color:var(--primary);text-decoration:none}.daily-banner .daily-badge{font-size:.68rem}.hint-panel{background:var(--surface);border:1px solid var(--primary);border-radius:var(--radius);box-shadow:var(--shadow);margin:14px 0 0;padding:14px 16px 16px}.hint-head{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.hint-kicker{text-transform:uppercase;letter-spacing:.08em;color:var(--primary);font-size:.72rem;font-weight:800}.hint-head h3{margin:0;font-size:1.05rem}.hint-tier{color:var(--text-soft);background:var(--surface-2);border-radius:999px;padding:2px 9px;font-size:.74rem;font-weight:700}.hint-close{color:var(--text-faint);cursor:pointer;background:0 0;border:none;margin-left:auto;padding:2px 6px;font-size:1.4rem;line-height:1}.hint-panel p{color:var(--text);margin:10px 0 0;font-size:.95rem}.hint-panel .hint-legend{color:var(--text-faint);margin-top:6px;font-size:.8rem}.hint-actions{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.hint-actions .btn{width:auto;text-decoration:none}.cell.hint-unit{background:#eef4ff}.cell.hint-pattern{box-shadow:inset 0 0 0 2px var(--primary);background:#cfe0ff}.cell.hint-elim{background:#fde4e6}.cell.hint-target{box-shadow:inset 0 0 0 2.5px var(--success);z-index:3;background:#d7f5df}@media (prefers-color-scheme:dark){.cell.hint-unit{background:#1d2740}.cell.hint-pattern{background:#26406e}.cell.hint-elim{background:#4a2228}.cell.hint-target{background:#1f4630}}.cell.diag:not(.selected):not(.peer):not(.same-value):not([class*=hint-]){background:#f1f5ff}@media (prefers-color-scheme:dark){.cell.diag:not(.selected):not(.peer):not(.same-value):not([class*=hint-]){background:#1c2433}}.board.jigsaw>.cell:nth-child(n){border-bottom:none;border-right:none}.board.jigsaw .cell.rg0,.board.jigsaw .cell.rg4,.board.jigsaw .cell.rg8{--rg:#fff7e6}.board.jigsaw .cell.rg1,.board.jigsaw .cell.rg5{--rg:#eef8ff}.board.jigsaw .cell.rg2,.board.jigsaw .cell.rg6{--rg:#f0fbf2}.board.jigsaw .cell.rg3,.board.jigsaw .cell.rg7{--rg:#fbf0fb}@media (prefers-color-scheme:dark){.board.jigsaw .cell.rg0,.board.jigsaw .cell.rg4,.board.jigsaw .cell.rg8{--rg:#262219}.board.jigsaw .cell.rg1,.board.jigsaw .cell.rg5{--rg:#18222c}.board.jigsaw .cell.rg2,.board.jigsaw .cell.rg6{--rg:#18251c}.board.jigsaw .cell.rg3,.board.jigsaw .cell.rg7{--rg:#261a26}}.board.jigsaw .cell:not(.selected):not(.peer):not(.same-value):not([class*=hint-]){background:var(--rg,var(--surface))}.cell .cage{border:1.5px dashed var(--text-faint);pointer-events:none;border-radius:2px;position:absolute;inset:3px}.cell .cage-sum{color:var(--text-soft);background:var(--surface);z-index:1;pointer-events:none;border-radius:3px;padding:1px 2px;font-size:clamp(.5rem,1.6vw,.68rem);font-weight:800;line-height:1;position:absolute;top:2px;left:3px}.board.killer .cell .cell-notes{padding-top:8px}.variant-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:22px 0 8px;display:grid}.variant-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);flex-direction:column;transition:border-color .12s,transform .12s;display:flex;overflow:hidden}.variant-card:hover{border-color:var(--primary);text-decoration:none;transform:translateY(-2px)}.variant-card img{width:100%;height:auto;display:block}.variant-card div{padding:14px 16px 18px}.variant-card strong{font-size:1.08rem}.variant-card p{color:var(--text-soft);margin:6px 0 0;font-size:.92rem}@font-face{font-family:Cairo;font-style:normal;font-display:swap;font-weight:400;src:url(/fonts/cairo/cairo-arabic-400-normal.woff2)format("woff2");unicode-range:U+6??,U+750-77F,U+870-88E,U+890-891,U+897-8E1,U+8E3-8FF,U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE70-FE74,U+FE76-FEFC}@font-face{font-family:Cairo;font-style:normal;font-display:swap;font-weight:400;src:url(/fonts/cairo/cairo-latin-400-normal.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Cairo;font-style:normal;font-display:swap;font-weight:600;src:url(/fonts/cairo/cairo-arabic-600-normal.woff2)format("woff2");unicode-range:U+6??,U+750-77F,U+870-88E,U+890-891,U+897-8E1,U+8E3-8FF,U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE70-FE74,U+FE76-FEFC}@font-face{font-family:Cairo;font-style:normal;font-display:swap;font-weight:600;src:url(/fonts/cairo/cairo-latin-600-normal.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Cairo;font-style:normal;font-display:swap;font-weight:700;src:url(/fonts/cairo/cairo-arabic-700-normal.woff2)format("woff2");unicode-range:U+6??,U+750-77F,U+870-88E,U+890-891,U+897-8E1,U+8E3-8FF,U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE70-FE74,U+FE76-FEFC}@font-face{font-family:Cairo;font-style:normal;font-display:swap;font-weight:700;src:url(/fonts/cairo/cairo-latin-700-normal.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Cairo;font-style:normal;font-display:swap;font-weight:800;src:url(/fonts/cairo/cairo-arabic-800-normal.woff2)format("woff2");unicode-range:U+6??,U+750-77F,U+870-88E,U+890-891,U+897-8E1,U+8E3-8FF,U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE70-FE74,U+FE76-FEFC}@font-face{font-family:Cairo;font-style:normal;font-display:swap;font-weight:800;src:url(/fonts/cairo/cairo-latin-800-normal.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}html[lang=ar]{--font:"Cairo", "Segoe UI", Tahoma, system-ui, sans-serif}html[lang=ar] body{line-height:1.75}html[lang=ar] h1,html[lang=ar] h2,html[lang=ar] h3{letter-spacing:0;line-height:1.4}[dir=rtl] .board,[dir=rtl] .mini-board,[dir=rtl] .keypad,[dir=rtl] .mini-keypad,[dir=rtl] .print-preview{direction:ltr;font-family:Segoe UI,system-ui,-apple-system,Helvetica Neue,Arial,sans-serif}[dir=rtl] .action-btn .badge{margin-left:0;margin-right:22px}[dir=rtl] .page ul,[dir=rtl] .page ol{padding-left:0;padding-right:1.3em}[dir=rtl] .archive-status{text-align:left}[dir=rtl] .stats-table th,[dir=rtl] .stats-table td{text-align:right}[dir=rtl] .hint-close{margin-left:0;margin-right:auto}html[lang=ar] *,html[lang=ar] :before,html[lang=ar] :after{letter-spacing:0!important}.lang-suggest{background:var(--surface-2);border-bottom:1px solid var(--border);font-size:.92rem}.lang-suggest-inner{flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;padding-top:8px;padding-bottom:8px;display:flex}.lang-suggest-go{color:#fff;background:var(--primary);border-radius:999px;padding:4px 14px;font-weight:700}.lang-suggest-go:hover{filter:brightness(1.08);text-decoration:none}.lang-suggest-close{cursor:pointer;color:var(--text-soft);background:0 0;border:none;padding:2px 6px;font-size:1.3rem;line-height:1}html[lang=ar] .lang-suggest,.lang-suggest[lang=ar]{font-family:Cairo,Segoe UI,Tahoma,system-ui,sans-serif}.site-header .nav{margin-inline-start:auto}.nav-toggle{align-items:center;height:38px}.header-actions{align-items:center;gap:8px;display:flex}.lang-menu{position:relative}.lang-menu-button{border:1.5px solid var(--border);background:var(--surface);height:38px;color:var(--text);font:inherit;letter-spacing:.04em;cursor:pointer;border-radius:10px;align-items:center;gap:7px;padding:0 10px;font-size:.85rem;font-weight:800;display:inline-flex}.lang-menu-button:hover,.lang-menu.open .lang-menu-button{border-color:var(--primary);color:var(--primary)}.lang-menu-button:focus-visible,.lang-option:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.lang-caret{transition:transform .15s}.lang-menu.open .lang-caret{transform:rotate(180deg)}.flag{border-radius:3px;flex:none;display:block;box-shadow:0 0 0 1px #0000001f}.lang-menu-list{top:calc(100% + 6px);z-index:60;background:var(--surface);border:1px solid var(--border);border-radius:12px;min-width:200px;margin:0;padding:6px;list-style:none;display:none;position:absolute;inset-inline-end:0;box-shadow:0 12px 32px #0f172a29}.lang-menu.open .lang-menu-list{display:block}.lang-option{color:var(--text);border-radius:8px;align-items:center;gap:10px;padding:9px 10px;font-size:.95rem;font-weight:600;display:flex}.lang-option:hover{background:var(--primary-soft);text-decoration:none}.lang-option .lang-code{letter-spacing:.04em;width:2.2em;color:var(--text-soft);font-size:.8rem;font-weight:800}.lang-option .lang-name{text-align:left;flex:1}html[dir=rtl] .lang-option .lang-name{text-align:right}.lang-option.current,.lang-check{color:var(--primary)}