:root{--felt:#ccead6;--felt-deep:#bfe5ce;--felt-dark:#8dc69e;--paper:#fff7e8;--paper-2:#ffe3a6;--ink:#2a2115;--muted:#6f644f;--line:#2a211538;--line-strong:#2a2115;--sage:#0e8757;--mint:#daf3dc;--accent:#0e8757;--gold:#ffba2d;--coral:#bf392f;--blue:#2870c4;--fixed:#ffe2a5;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--button-shadow:0 4px 0 var(--line-strong);--shadow:0 20px 0 #31231129, 0 30px 60px #31231124;--paper-shadow:0 14px 0 #31231124, 0 22px 44px #3123111f;--font-display:"Nunito", "Aptos Display", "SF Pro Display", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;--font-body:"DM Sans", -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif;--font-mono:"SFMono-Regular", ui-monospace, Menlo, Consolas, monospace}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--ink);font-family:var(--font-body);background-color:#0000;background-image:repeating-linear-gradient(135deg,#ffffff61 0 12px,#0000 12px 32px),linear-gradient(135deg,#ffe6b7,#ccead6 62%,#f8d08d);background-position:0 0,0 0;background-repeat:repeat,repeat;background-size:auto;background-attachment:scroll,scroll;background-origin:padding-box,padding-box;background-clip:border-box,border-box;margin:0;overflow-x:hidden}.home-page{min-height:100svh;color:var(--ink);background:repeating-linear-gradient(135deg,#ffffff61 0 12px,#0000 12px 32px),linear-gradient(135deg,#ffe6b7,#ccead6 62%,#f8d08d);transition:background .24s,color .24s}button,input,select,textarea{font:inherit}button{color:inherit;cursor:pointer;touch-action:manipulation}a{color:inherit;text-decoration:none}h1,h2,h3,p{margin-top:0}h1,h2,h3,.brand,.button{font-family:var(--font-display)}:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.nav{justify-content:space-between;align-items:center;gap:18px;width:min(1400px,100% - 40px);margin:0 auto;padding:14px 0 4px;display:flex}.home-page .nav{justify-content:initial;grid-template-columns:minmax(170px,1fr) auto minmax(170px,1fr);padding-top:24px;display:grid}.brand,.nav nav,.nav-actions,.footer-links{align-items:center;gap:16px;display:flex}.footer-links{flex-wrap:wrap}.brand{letter-spacing:0;color:var(--ink);font-weight:850}.home-page .brand{justify-self:start}.brand-mark{border:2px solid var(--gold);border-radius:var(--radius-sm);background:var(--gold);width:36px;height:36px;color:var(--ink);place-items:center;display:grid;box-shadow:inset 0 -3px #2a211529}.nav nav{color:#2a2115b3;font-size:14px;font-weight:850}.nav nav a:hover,.footer a:hover{color:var(--ink)}.nav-actions{gap:12px}.home-page .nav-actions{justify-self:end}.visual-switcher{border-radius:var(--radius-lg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:repeating-linear-gradient(135deg,#ffffff5c 0 5px,#0000 5px 12px),#fff7e894;border:2px solid #2a2115c7;grid-template-columns:repeat(2,minmax(0,1fr));justify-self:center;gap:4px;width:min(390px,100%);min-width:330px;padding:4px;display:inline-grid;box-shadow:inset 0 -3px #2a211524,0 10px 24px #3123111f}.visual-switcher-option{border-radius:var(--radius-md);color:#2a2115b8;text-align:left;min-width:0;min-height:46px;box-shadow:none;background:0 0;border:1px solid #0000;flex-wrap:nowrap;align-items:center;gap:8px;padding:5px 10px 5px 8px;transition:background .18s,color .18s,transform .18s,box-shadow .18s,border-color .18s;display:flex}.visual-switcher-option:hover{color:var(--ink);transform:translateY(-1px)}.visual-switcher-option:active{transform:scale(.98)}.visual-switcher-option[data-active=true]{background:var(--gold);color:var(--ink);border-color:#2a211533;box-shadow:inset 0 -3px #2a211524}.visual-switcher-option span:last-child{gap:1px;min-width:0;display:grid}.visual-switcher-option strong{font-family:var(--font-display);text-overflow:ellipsis;white-space:nowrap;font-size:13px;font-weight:950;line-height:1.05;overflow:hidden}.visual-switcher-option small{color:currentColor;opacity:.72;text-overflow:ellipsis;white-space:nowrap;font-size:10px;font-weight:850;line-height:1.1;overflow:hidden}.visual-switcher-mark{opacity:.9;background:linear-gradient(135deg,currentColor 0 22%,#0000 22% 50%,currentColor 50% 72%,#0000 72%);border:2px solid;border-radius:7px;flex:none;width:22px;height:22px;position:relative}.visual-switcher-option-dark .visual-switcher-mark{background:radial-gradient(circle at 65% 35%,currentColor 0 3px,#0000 4px),linear-gradient(135deg,#0000 0 46%,currentColor 46% 54%,#0000 54%)}.nav-cta{border:2px solid var(--ink);border-radius:var(--radius-sm);min-height:40px;color:var(--ink);background:#fff7e88f;background:var(--gold);box-shadow:inset 0 -3px #2a21151f;box-shadow:inset 0 -3px 0 #2a211529, 0 4px 0 var(--ink);justify-content:center;align-items:center;padding:0 16px;font-size:14px;font-weight:900;transition:transform .16s,box-shadow .16s,background .16s;display:inline-flex}.nav-cta:hover{transform:translateY(-1px)}.language-switcher{border-radius:var(--radius-sm);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fff7e875;border:1px solid #2a211526;align-items:center;gap:4px;padding:3px;display:inline-flex}.language-switcher a{color:#2a2115ad;white-space:nowrap;border-radius:6px;justify-content:center;align-items:center;min-height:32px;padding:0 9px;font-size:12px;font-weight:850;display:inline-flex}.language-switcher a.active{background:var(--paper);color:var(--ink)}.button{border:1px solid var(--ink);border-radius:var(--radius-sm);justify-content:center;align-items:center;min-height:46px;padding:0 16px;font-weight:800;display:inline-flex}.primary{background:var(--ink);color:var(--paper)}.game-hero{grid-template-columns:minmax(235px,.38fr) minmax(760px,1fr);align-items:start;gap:clamp(24px,3.5vw,52px);width:min(1400px,100% - 40px);min-height:calc(100svh - 58px);margin:0 auto;padding:32px 0 36px;display:grid}.intro{min-width:0;color:var(--ink);grid-area:1/1;padding-top:28px}.eyebrow{color:#8a4f00;letter-spacing:0;text-transform:uppercase;margin:0 0 12px;font-size:13px;font-weight:950}h1{letter-spacing:0;overflow-wrap:break-word;max-width:430px;margin-bottom:18px;font-size:clamp(42px,5.6vw,78px);line-height:.96}.home-page h1{overflow-wrap:normal;text-wrap:balance;word-break:normal;max-width:560px;margin-bottom:22px;font-size:clamp(58px,6.75vw,104px);line-height:.88}.hero-text{max-width:390px;color:var(--muted);font-size:clamp(16px,1.15vw,19px);line-height:1.68}.paper-note{border-left:4px solid var(--gold);width:min(330px,100%);color:var(--ink);box-shadow:none;background:#fff7e824;margin-top:26px;padding:6px 0 4px 22px}.paper-note h2{margin:0 0 10px;font-size:18px;line-height:1.14}.paper-note p{color:var(--muted);margin-bottom:0;font-size:15px;line-height:1.62}.sudoku-shell{grid-area:1/2;grid-template-columns:minmax(500px,1fr) minmax(260px,286px);align-items:start;gap:clamp(22px,2.4vw,34px);width:100%;min-width:0;display:grid}.board-stage,.game-board-wrap,.game-controls,.feature,.step,.faq,.note-band{border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--paper-shadow);background:#fff7e8b8}.board-stage{background:linear-gradient(135deg,#fff7e86b,#fff7e81f),#ffffff1a;border:1px solid #2a211524;border-radius:34px;padding:18px;box-shadow:inset 0 0 0 16px #ffffff24,0 22px 44px #3123111f}.game-board-wrap{background:var(--paper);min-width:0;max-width:100%;box-shadow:none;border:0;border-radius:24px;padding:clamp(18px,2.2vw,26px)}.board-top{color:var(--muted);justify-content:space-between;align-items:center;gap:18px;margin-bottom:12px;font-weight:950;display:flex}.board-top>span{text-transform:capitalize}.board-top strong{color:var(--ink);font-family:var(--font-mono);font-variant-numeric:tabular-nums;align-items:center;gap:6px;font-size:17px;display:inline-flex}.skip-to-controls:not(:focus){clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.skip-to-controls:focus{z-index:100;top:max(12px, env(safe-area-inset-top));left:max(12px, env(safe-area-inset-left));border:2px solid var(--line-strong);border-radius:var(--radius-sm);background:var(--accent);max-width:calc(100vw - 24px);min-height:44px;color:var(--ink);box-shadow:var(--button-shadow);justify-content:center;align-items:center;margin:0;padding:10px 14px;font-size:14px;font-weight:950;text-decoration:none;display:inline-flex;position:fixed}.sudoku-board{aspect-ratio:1;border:3px solid var(--line-strong);background:var(--paper);grid-template-rows:repeat(9,1fr);grid-template-columns:repeat(9,1fr);width:100%;max-width:100%;display:grid}.cell{min-width:0;min-height:0;color:var(--ink);font-size:clamp(20px,2.25vw,31px);font-weight:900;font-family:var(--font-mono);background:#fffaf0;border:1px solid #2a211538;place-items:center;padding:0;line-height:1;transition:background .16s,outline-color .16s,transform .12s;display:grid;position:relative;overflow:hidden}.cell:hover{background:#fff2cf}.cell:nth-child(3n){border-right:3px solid var(--line-strong)}.cell:nth-child(9n){border-right:1px solid #2a211538}.cell:nth-child(n+19):nth-child(-n+27),.cell:nth-child(n+46):nth-child(-n+54){border-bottom:3px solid var(--line-strong)}.cell.fixed{color:var(--ink);background:var(--fixed)}.cell.selected{outline:4px solid var(--accent);outline-offset:-4px;background:#98e6b4}.notes{width:82%;height:82%;color:var(--muted);grid-template-rows:repeat(3,1fr);grid-template-columns:repeat(3,1fr);font-size:clamp(8px,1.25vw,12px);font-weight:800;line-height:1;display:grid}.notes span{place-items:center;display:grid}.status{min-height:32px;color:var(--muted);align-items:center;margin:12px 0 0;font-size:15px;font-weight:800;line-height:1.45;display:flex}.status.solved{color:var(--accent)}.game-controls{min-width:0;max-width:100%;box-shadow:var(--shadow);background:#ffdc91;border:0;border-radius:28px;gap:10px;padding:20px 24px;display:grid}.controls-title{color:var(--ink);letter-spacing:0;white-space:nowrap;margin:0 0 4px;font-size:clamp(30px,2.65vw,40px);line-height:.95;display:block}.difficulty-row,.metric-grid,.control-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.metric-grid{gap:8px}.board-difficulty{flex-wrap:wrap;gap:8px;margin-bottom:16px;display:flex}.board-difficulty .difficulty{border-radius:999px;flex:none;min-height:34px;padding:0 12px;font-size:13px}.metric-grid div{border-radius:var(--radius-sm);background:#fff7e88c;border:1px solid #2a211538;align-content:center;gap:4px;min-height:46px;padding:8px 10px;display:grid}.metric-grid span{color:var(--muted);font-size:11px;font-weight:950}.metric-grid strong{color:var(--ink);font-family:var(--font-mono);font-variant-numeric:tabular-nums;text-transform:capitalize;font-size:16px}.difficulty,.tool,.new-game,.number-pad button{border-radius:var(--radius-sm);background:var(--paper);min-height:44px;color:var(--ink);border:2px solid #2a211547;font-weight:950;transition:background .18s,border-color .18s,box-shadow .18s,transform .18s;box-shadow:inset 0 -3px #2a211521}.difficulty:hover,.tool:hover,.new-game:hover,.number-pad button:hover{border-color:var(--ink);transform:translateY(-1px)}.difficulty:active,.tool:active,.new-game:active,.number-pad button:active,.cell:active{transform:scale(.98)}.difficulty{text-transform:capitalize}.difficulty.active,.tool.active{background:var(--accent);border-color:var(--accent);color:#fff}.number-pad{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.number-pad button{aspect-ratio:auto;min-height:54px;color:var(--ink);font-size:28px;font-family:var(--font-mono);font-variant-numeric:tabular-nums;padding:0}.game-controls .status{border-radius:var(--radius-sm);background:#fff7e88c;border:1px solid #2a211538;min-height:42px;margin:0;padding:8px 10px}.tool,.new-game{border-radius:12px;justify-content:center;align-items:center;gap:8px;min-height:46px;display:inline-flex}.new-game{background:var(--gold);border-color:var(--ink);min-height:52px;box-shadow:inset 0 -3px #2a211529}.section{width:min(1360px,100% - 80px);margin:0 auto;padding:82px 0}.experience-cards{padding:18px 0 82px}.article-hero{grid-template-columns:minmax(0,.92fr) minmax(320px,.48fr);align-items:center;gap:36px;width:min(1180px,100% - 40px);min-height:calc(82svh - 84px);margin:0 auto;padding:56px 0 68px;display:grid}.article-hero h1,.section-heading h2,.split h2{color:var(--ink)}.article-hero .hero-text,.article-section .section-heading p,.section-heading>p:not(.eyebrow),.split p,.site-map-intro{color:var(--muted)}.article-page h1{max-width:760px}.article-actions{flex-wrap:wrap;gap:12px;margin-top:28px;display:flex}.article-summary{border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow);background:#ffffffe6;padding:26px}.article-summary h2{letter-spacing:0;margin-bottom:18px;font-size:clamp(26px,4vw,38px);line-height:1.05}.article-summary ol{color:var(--muted);margin:0;padding-left:22px;line-height:1.72}.article-summary li+li{margin-top:12px}.article-section{width:min(1180px,100% - 40px);margin:0 auto;padding:72px 0}.article-section .section-heading p{max-width:820px;font-size:18px;line-height:1.72}.article-cta{gap:14px;display:grid}.article-cta .button{width:fit-content}.section-heading{max-width:760px;margin-bottom:26px}.section h2{letter-spacing:0;font-size:clamp(32px,5vw,58px);line-height:1}.grid.three{grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.grid.four{grid-template-columns:repeat(2,minmax(0,1fr))}.feature{border-radius:var(--radius-md);background:linear-gradient(135deg, #ffffffad, #f7f6e8f5), var(--paper);min-height:142px;box-shadow:none;padding:26px}@supports (color:lab(0% 0 0)){.feature{background:linear-gradient(135deg, lab(100% 0 0/.68), lab(96.6618% -1.46124 6.69009/.96)), var(--paper)}}.feature h3,.faq h3,.step h3{letter-spacing:0;margin-bottom:10px;font-size:clamp(22px,2vw,30px);line-height:1.08}.feature p,.faq p,.step p,.note-band p,.legal-page p{color:var(--muted);line-height:1.72}.feature p,.faq p,.step p,.note-band p,.feedback-card p{color:var(--muted)}.home-page .home-guide-links .eyebrow{color:var(--game-gold,#f7b51c)}.home-page .home-guide-links .section-heading h2{color:var(--game-paper,#fff8e8);text-shadow:0 2px #051f114d}.home-page .home-guide-links .section-heading>p:not(.eyebrow){color:#dcebd8}.home-page .home-guide-links .feature a{text-underline-offset:4px;align-items:center;min-height:44px;font-weight:800;text-decoration:underline;text-decoration-thickness:2px;display:inline-flex}.split{grid-template-columns:.8fr 1.2fr;gap:38px;display:grid}.steps{gap:12px;display:grid}.step{grid-template-columns:52px 1fr;gap:14px;padding:20px;display:grid}.step>span{border-radius:var(--radius-sm);background:var(--mint);width:36px;height:36px;color:var(--sage);place-items:center;font-weight:850;display:grid}.note-band{background:linear-gradient(135deg, #f7f6e8f0, #e6e6d2eb), var(--paper);padding:34px}@supports (color:lab(0% 0 0)){.note-band{background:linear-gradient(135deg, lab(96.6618% -1.46124 6.69009/.94), lab(90.9309% -2.35334 9.61553/.92)), var(--paper)}}.note-band h2,.article-cta h2{color:var(--ink)}.note-band p{max-width:780px;font-size:18px}.faq-list{gap:12px;display:grid}.faq{box-shadow:none;padding:22px}.footer{border-top:1px solid var(--line);width:min(1360px,100% - 80px);color:var(--muted);justify-content:space-between;gap:20px;margin:0 auto;padding:32px 0 44px;display:flex}.legal-page{width:min(820px,100% - 40px);color:var(--ink);margin:0 auto;padding:74px 0}.legal-page:before{border-radius:var(--radius-sm);background:linear-gradient(90deg, var(--gold), var(--accent), var(--blue));content:"";width:100%;height:8px;margin-bottom:28px;display:block}.legal-page h1{letter-spacing:0;color:var(--ink);font-size:clamp(40px,7vw,72px)}.legal-page h2{color:var(--ink);margin-top:34px}.legal-page a{color:var(--sage);font-weight:750}.feedback-card{border:1px solid var(--line);border-radius:var(--radius-md);background:linear-gradient(135deg, #ffffffc7, #f7f6e8f0), var(--paper);box-shadow:var(--shadow);gap:12px;margin-top:34px;padding:24px;display:grid}@supports (color:lab(0% 0 0)){.feedback-card{background:linear-gradient(135deg, lab(100% 0 0/.78), lab(96.6618% -1.46124 6.69009/.94)), var(--paper)}}.feedback-card span{color:var(--muted);text-transform:uppercase;font-size:13px;font-weight:850}.feedback-card strong{overflow-wrap:anywhere;font-size:clamp(22px,5vw,34px)}.feedback-card .button{width:fit-content}.feedback-card p{margin-bottom:0}.site-map-intro{max-width:720px;font-size:18px}.site-map-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:34px;display:grid}.site-map-section{border:1px solid var(--line);border-radius:var(--radius-md);background:linear-gradient(135deg, #ffffffc7, #f7f6e8f0), var(--paper);padding:22px}@supports (color:lab(0% 0 0)){.site-map-section{background:linear-gradient(135deg, lab(100% 0 0/.78), lab(96.6618% -1.46124 6.69009/.94)), var(--paper)}}.site-map-section h2{color:var(--ink);margin-top:0;font-size:22px}.site-map-section ul{gap:10px;margin:0;padding-left:20px;display:grid}.site-map-section a{color:var(--sage);font-weight:750}.legal-topbar{justify-content:space-between;align-items:center;gap:16px;margin-bottom:28px;display:flex}.legal-topbar .language-switcher a{color:var(--muted)}.legal-topbar .language-switcher a.active{color:var(--ink)}body[data-home-visual=nocturne]{color:#f7f0dc;background:#062412}body[data-home-visual=nocturne] .home-page{--nocturne-cream:#f7f0dc;--nocturne-soft:#c7d9bf;--nocturne-line:#f7f0dc33;--nocturne-paper:#f3efdc;--nocturne-paper-2:#e4e3c9;--nocturne-ink:#07140b;color:var(--nocturne-cream);background:repeating-linear-gradient(45deg,#f7f0dc06 0 1px,#0000 1px 13px),radial-gradient(circle at 73% 13%,#2270366b,#0000 31%),linear-gradient(135deg,#052615 0%,#06351a 56%,#061c10 100%)}body[data-home-visual=nocturne] .brand{color:var(--nocturne-cream)}body[data-home-visual=nocturne] .brand-mark{color:var(--nocturne-ink);background:#f0b700;border-color:#f0b700;box-shadow:inset 0 -4px #07140b38,0 0 0 2px #f7f0dc33}body[data-home-visual=nocturne] .visual-switcher{background:repeating-linear-gradient(135deg,#f7f0dc0f 0 5px,#0000 5px 12px),#f7f0dc14;border-color:#f7f0dc3d;box-shadow:inset 0 0 0 1px #f7f0dc14,0 18px 40px #00000047}body[data-home-visual=nocturne] .visual-switcher-option{color:#f7f0dcc2}body[data-home-visual=nocturne] .visual-switcher-option:hover{color:var(--nocturne-cream)}body[data-home-visual=nocturne] .visual-switcher-option[data-active=true]{background:var(--nocturne-paper);color:var(--nocturne-ink);border-color:#f0b700cc;box-shadow:inset 0 -3px #07140b29,0 0 0 1px #f7f0dc14}body[data-home-visual=nocturne] .visual-switcher-option-dark[data-active=true]{color:var(--nocturne-cream);background:radial-gradient(circle at 78% 18%,#f0b70047,#0000 22px),linear-gradient(135deg,#0b351b,#071f12)}body[data-home-visual=nocturne] .language-switcher{background:#f7f0dc1a;border-color:#f7f0dc2e}body[data-home-visual=nocturne] .language-switcher a{color:#f7f0dcb3}body[data-home-visual=nocturne] .language-switcher a.active{background:var(--nocturne-cream);color:var(--nocturne-ink)}body[data-home-visual=nocturne] .intro{color:var(--nocturne-cream)}body[data-home-visual=nocturne] .eyebrow{color:#f0b700}body[data-home-visual=nocturne] h1{color:var(--nocturne-cream)}body[data-home-visual=nocturne] .hero-text,body[data-home-visual=nocturne] .paper-note p,body[data-home-visual=nocturne] .split p,body[data-home-visual=nocturne] .feature p,body[data-home-visual=nocturne] .step p,body[data-home-visual=nocturne] .note-band p{color:var(--nocturne-soft)}body[data-home-visual=nocturne] .paper-note{color:var(--nocturne-cream);background:0 0;border-left-color:#f0b700}body[data-home-visual=nocturne] .paper-note h2{color:var(--nocturne-cream)}body[data-home-visual=nocturne] .board-stage{background:linear-gradient(135deg,#f7f0dc29,#f7f0dc0a),#0000001f;border:1px solid #f7f0dc3d;box-shadow:inset 0 0 0 16px #f7f0dc0f,0 28px 58px #00000052}body[data-home-visual=nocturne] .game-board-wrap{background:var(--nocturne-paper);color:var(--nocturne-ink)}body[data-home-visual=nocturne] .board-top{color:#07140bad}body[data-home-visual=nocturne] .board-top strong,body[data-home-visual=nocturne] .board-top>span{color:var(--nocturne-ink)}body[data-home-visual=nocturne] .sudoku-board{border-color:var(--nocturne-ink);background:var(--nocturne-paper)}body[data-home-visual=nocturne] .cell{color:var(--nocturne-ink);background:#f7f3e5;border-color:#07140b33}body[data-home-visual=nocturne] .cell:hover{background:#eee9d5}body[data-home-visual=nocturne] .cell.fixed{background:var(--nocturne-paper-2)}body[data-home-visual=nocturne] .cell.related{background:#d7ead8}body[data-home-visual=nocturne] .cell.same-value{background:#b9e9be}body[data-home-visual=nocturne] .cell.selected{background:#92dfa9;outline-color:#0e8757}body[data-home-visual=nocturne] .status{color:#07140ba3}body[data-home-visual=nocturne] .game-controls{background:var(--nocturne-paper);color:var(--nocturne-ink);box-shadow:0 18px #00000029,0 30px 60px #0000004d}body[data-home-visual=nocturne] .controls-title{color:var(--nocturne-ink)}body[data-home-visual=nocturne] .metric-grid div,body[data-home-visual=nocturne] .game-controls .status{background:#ffffff47;border-color:#07140b38}body[data-home-visual=nocturne] .metric-grid span{color:#07140ba3}body[data-home-visual=nocturne] .metric-grid strong{color:var(--nocturne-ink)}body[data-home-visual=nocturne] .game-controls .status{color:#07140bb8}body[data-home-visual=nocturne] .home-page .number-pad button{color:var(--nocturne-ink);background:#f8f5e8;border-color:#07140b38}body[data-home-visual=nocturne] .home-page .tool,body[data-home-visual=nocturne] .home-page .new-game{border-color:#07140b38}body[data-home-visual=nocturne] .home-page .new-game{border-color:var(--nocturne-ink);background:#f0b700}body[data-home-visual=nocturne] .feature,body[data-home-visual=nocturne] .step,body[data-home-visual=nocturne] .note-band{border-color:var(--nocturne-line);color:var(--nocturne-cream);background:linear-gradient(135deg,#f7f0dc14,#f7f0dc08),#00000014}body[data-home-visual=nocturne] .feature h3,body[data-home-visual=nocturne] .step h3,body[data-home-visual=nocturne] .note-band h2,body[data-home-visual=nocturne] .split h2,body[data-home-visual=nocturne] .home-page .home-guide-links .section-heading h2{color:var(--nocturne-cream)}body[data-home-visual=nocturne] .step>span{color:#f0b700;background:#f0b70029}body[data-home-visual=nocturne] .footer{border-top-color:var(--nocturne-line);color:#f7f0dcb3}body[data-home-visual=nocturne] .footer a:hover{color:var(--nocturne-cream)}@media (max-width:1160px){.nav,.game-hero,.section,.footer{width:min(920px,100% - 40px)}.game-hero{grid-template-columns:1fr;min-height:auto;padding-top:24px}.intro{grid-area:auto;padding-top:16px}.sudoku-shell{grid-area:auto;grid-template-columns:minmax(0,1fr) minmax(280px,.55fr)}.number-pad{grid-template-columns:repeat(3,minmax(0,1fr))}.number-pad button{aspect-ratio:auto;min-height:44px}.paper-note{margin-top:34px}}@media (max-width:820px){.home-page .nav{grid-template-columns:minmax(0,1fr) auto}.home-page .brand{grid-area:1/1}.home-page .nav-actions{grid-area:1/2}.home-page .visual-switcher{grid-area:2/1/auto/-1;width:100%;min-width:0}.nav nav{display:none}.article-hero{grid-template-columns:minmax(0,1fr);min-height:auto;padding-top:34px}.sudoku-shell,.split,.grid.three,.game-controls{grid-template-columns:minmax(0,1fr)}.board-stage{border-radius:24px;padding:10px}.game-board-wrap{border-radius:18px;padding:12px}.board-top{align-items:stretch}.intro{padding-top:8px}.number-pad{grid-template-columns:repeat(3,minmax(0,1fr))}.number-pad button{aspect-ratio:auto;min-height:44px;font-size:20px}.control-grid,.difficulty-row,.metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.board-difficulty{grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.board-difficulty .difficulty{border-radius:var(--radius-sm);width:100%;min-height:44px;padding:0 8px;font-size:14px}}@media (max-width:560px){.nav,.game-hero,.article-hero,.article-section,.section,.footer{width:calc(100% - 24px);max-width:1360px}.nav{flex-direction:column;align-items:flex-start;gap:12px}.nav-actions{flex-wrap:wrap;width:100%}.home-page .nav{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px}.home-page .nav-actions{width:auto}.home-page .brand{min-width:0}.home-page .brand span:last-child{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.home-page .visual-switcher{width:100%;min-width:0}.visual-switcher-option{min-height:44px;padding:5px 7px}.visual-switcher-option strong{font-size:12px}.visual-switcher-option small{font-size:9px}.visual-switcher-mark{border-radius:6px;width:18px;height:18px}.game-hero{gap:18px;padding-top:24px}h1,.home-page h1{font-size:clamp(44px,15vw,64px);line-height:.92}.hero-text{font-size:17px}.paper-note{width:calc(100% - 8px);margin-top:26px;padding:6px 0 4px 18px;transform:none}.game-controls{border-radius:var(--radius-lg);padding:16px}.board-top{gap:12px;display:grid}.board-difficulty{display:flex}.board-difficulty .difficulty{border-radius:var(--radius-sm);width:auto;min-height:44px;font-size:14px}.cell{font-size:clamp(20px,8vw,30px)}.notes{font-size:clamp(7px,2.6vw,10px)}.number-pad{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.number-pad button,.difficulty{border-radius:var(--radius-sm);min-height:44px;font-size:14px}.tool{border-radius:12px;min-height:46px;font-size:14px}.new-game{border-radius:12px;min-height:52px;font-size:14px}.number-pad button{min-height:44px;font-size:20px}.section{padding:56px 0}.board-stage{border-radius:var(--radius-lg);box-shadow:none;background:0 0;border:0;padding:0}.controls-title{font-size:34px}.experience-cards{padding-top:14px}.article-section{padding:52px 0}.article-summary,.article-cta{padding:22px}.site-map-grid{grid-template-columns:1fr}.article-actions .button,.article-cta .button{width:100%}.footer{flex-direction:column}.legal-topbar{flex-direction:column;align-items:flex-start}.feedback-card .button{width:100%}body[data-home-visual=nocturne] .home-page .board-stage{box-shadow:none;background:0 0;border:0}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.home-page,.visual-switcher-option,.cell,.difficulty,.tool,.new-game,.number-pad button{transition:none}}.p8-paper{gap:clamp(1.5rem,3vw,2.5rem);display:grid}.method-direct-answer,.license-status-card{border:1px solid color-mix(in srgb, var(--ink) 22%, transparent);border-left:4px solid var(--accent);background:color-mix(in srgb, var(--paper) 82%, white);border-radius:.8rem;padding:1rem 1.1rem;line-height:1.7}.p8-section-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;display:grid}.method-card{border:1px solid color-mix(in srgb, var(--ink) 16%, transparent);background:color-mix(in srgb, var(--paper) 92%, white);border-radius:.8rem;padding:1rem}.method-card h2{margin-top:0;font-size:clamp(1.05rem,2vw,1.25rem)}.content-callout{border-top:1px solid color-mix(in srgb, var(--ink) 20%, transparent);border-bottom:1px solid color-mix(in srgb, var(--ink) 20%, transparent);padding:1.25rem 0}.content-callout li+li{margin-top:.55rem}.content-link-grid,.content-actions{flex-wrap:wrap;gap:.75rem;display:flex}.content-link-grid a,.content-actions a,.primary-link{border:1px solid color-mix(in srgb, var(--ink) 25%, transparent);border-radius:999px;align-items:center;min-height:44px;padding:.55rem .9rem;display:inline-flex}.glossary-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem;margin:0;display:grid}.glossary-entry{border-bottom:1px solid color-mix(in srgb, var(--ink) 16%, transparent);padding:.8rem 0}.glossary-entry dt{font-weight:750}.glossary-entry dd{margin:.35rem 0 0;line-height:1.65}.technique-chip-list{flex-wrap:wrap;gap:.65rem;padding:0;list-style:none;display:flex}.technique-chip-list a{border:1px solid color-mix(in srgb, var(--ink) 20%, transparent);border-radius:999px;align-items:center;min-height:44px;padding:.5rem .8rem;display:inline-flex}.data-identity-list,.report-headlines{grid-template-columns:repeat(3,minmax(0,1fr));gap:.8rem;display:grid}.data-identity-list div,.report-headlines div{border:1px solid color-mix(in srgb, var(--ink) 16%, transparent);border-radius:.7rem;padding:.8rem}.data-identity-list dt,.report-headlines dt{color:var(--muted);font-size:.82rem}.data-identity-list dd,.report-headlines dd{overflow-wrap:anywhere;margin:.35rem 0 0;font-weight:700}.table-scroll{max-width:100%;overflow-x:auto}.data-table{border-collapse:collapse;width:100%;min-width:720px}.data-table th,.data-table td{border-bottom:1px solid color-mix(in srgb, var(--ink) 16%, transparent);text-align:left;vertical-align:top;padding:.7rem .6rem}.data-table code{overflow-wrap:anywhere}.checksum{word-break:break-all;font-size:.75rem}.embed-snippet{color:#f4f0df;white-space:pre;background:#171914;border-radius:.65rem;max-width:100%;padding:.8rem;font-size:.72rem;line-height:1.5;overflow:auto}.report-technique-list,.hardest-puzzle-list{gap:.65rem;padding-left:1.2rem;display:grid}.report-technique-list{padding:0;list-style:none}.report-technique-list li{border-bottom:1px solid color-mix(in srgb, var(--ink) 16%, transparent);justify-content:space-between;gap:1rem;padding:.55rem 0;display:flex}.hardest-puzzle-list li{padding-left:.2rem}.hardest-puzzle-list span{color:var(--muted);margin-top:.25rem;display:block}.embed-page{background:radial-gradient(circle at top, #ffffffe0, transparent 42%), var(--paper);min-height:100svh;color:var(--ink);padding:clamp(.65rem,2.5vw,1.2rem)}.embed-language{justify-content:flex-end;max-width:560px;margin:0 auto .5rem;display:flex}.embed-sudoku-shell{border:1px solid color-mix(in srgb, var(--ink) 22%, transparent);background:color-mix(in srgb, var(--paper) 90%, white);border-radius:1rem;width:min(100%,560px);margin:0 auto;padding:clamp(.75rem,3vw,1.15rem);box-shadow:0 12px 34px #1619131f}.embed-header{justify-content:space-between;align-items:flex-start;gap:1rem;display:flex}.embed-header h1{margin:.15rem 0 0;font-size:clamp(1.2rem,5vw,1.7rem)}.embed-score{background:var(--ink);color:var(--paper);border-radius:999px;flex:none;padding:.45rem .7rem;font-weight:750}.embed-puzzle-id{overflow-wrap:anywhere;margin:.75rem 0;font-size:.75rem}.embed-board{aspect-ratio:1;border:2px solid var(--ink);background:var(--ink);grid-template-columns:repeat(9,minmax(0,1fr));gap:1px;width:100%;display:grid}.embed-cell{min-width:0;min-height:0;color:var(--ink);background:#fffdf5;border:0;border-radius:0;padding:0;font:700 clamp(.9rem,4.8vw,1.45rem)/1 system-ui,sans-serif}.embed-cell:nth-child(3n){box-shadow:inset -1px 0 0 var(--ink)}.embed-cell:nth-child(n+19):nth-child(-n+27),.embed-cell:nth-child(n+46):nth-child(-n+54){box-shadow:inset 0 -1px 0 var(--ink)}.embed-cell.is-given{background:#eee8d3}.embed-cell.is-wrong{color:#7d1510;background:#f5c8c2}.embed-cell[aria-selected=true]{outline:3px solid var(--accent);outline-offset:-3px;z-index:1;position:relative}.embed-number-pad{grid-template-columns:repeat(9,minmax(0,1fr));gap:.35rem;margin-top:.75rem;display:grid}.embed-number-pad button,.embed-actions button{border:1px solid color-mix(in srgb, var(--ink) 28%, transparent);min-width:44px;min-height:44px;color:var(--ink);background:#fffdf5;border-radius:.6rem;font-weight:750}.embed-number-pad button:disabled,.embed-actions button:disabled{opacity:.45}.embed-actions{grid-template-columns:repeat(3,minmax(0,1fr));gap:.5rem;margin-top:.6rem;display:grid}.embed-status{min-height:1.5em;margin:.75rem 0 .5rem}.embed-attribution{align-items:center;min-height:44px;font-weight:750;display:inline-flex}@media (max-width:720px){.p8-section-grid,.glossary-list,.data-identity-list,.report-headlines{grid-template-columns:1fr}.embed-number-pad{grid-template-columns:repeat(5,minmax(44px,1fr))}}.home-page{--game-safe-left:env(safe-area-inset-left,0px);--game-safe-right:env(safe-area-inset-right,0px);--game-felt:#28663f;--game-felt-deep:#174d2d;--game-paper:#fff8e8;--game-paper-surface-tint:#fcf2f2;--game-paper-muted:#f4ecd4;--game-ink:#1f1a12;--game-muted:#655d4e;--game-line:#1f1a123d;--game-line-strong:#1f1a12;--game-green:#087a49;--game-green-deep:#075d39;--game-mint:#dcebd8;--game-related:#edf1dd;--game-fixed:#f8e6ad;--game-gold:#f7b51c;--game-error:#c4352b;background-color:var(--game-felt);background-image:url(/textures/felt-mobile.webp);background-repeat:repeat;background-size:192px 192px;min-width:0}body:has(.home-page){background-color:#28663f;background-image:url(/textures/felt-mobile.webp);background-repeat:repeat;background-size:192px 192px}.home-page .nav{--header-paper-mask:url(/textures/header-paper-crafted-mobile-v7.webp);--header-paper-mask-size:100% 96px;z-index:20;width:calc(100% - 24px);min-height:96px;margin:max(12px, env(safe-area-inset-top)) auto 10px;color:var(--game-ink);box-shadow:none;background-color:#0000;background-image:url(/textures/header-paper-crafted-mobile-v7.webp);background-position:top;background-repeat:no-repeat;background-size:100% 96px;border:0;border-radius:0;flex-flow:row;justify-content:space-between;align-items:center;gap:8px;padding:9px 20px 43px 14px;display:flex;position:relative;overflow:visible}.home-page .nav:after{content:none;background:0 0}.home-page .nav>*{z-index:1;position:relative}.home-page .brand{min-width:0;min-height:44px;color:var(--game-ink);box-shadow:none;white-space:nowrap;background:0 0;border:0;border-radius:0;gap:8px;padding:0;font-size:clamp(15px,4.6vw,19px);line-height:1}.home-page .brand-mark{background:var(--game-gold);width:40px;height:40px;color:var(--game-ink);border:1px solid #d99808;border-radius:11px;flex:0 0 40px;font-size:24px;font-weight:950;box-shadow:inset 0 -4px #1f1a122e,0 3px #b97704}.home-page .nav-actions{flex-wrap:nowrap;flex:none;align-items:center;gap:6px;width:auto;min-width:0;display:flex}.disclosure{min-width:0;position:relative}details.disclosure>summary{list-style:none}details.disclosure>summary::-webkit-details-marker{display:none}.home-page .disclosure{box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none;background:0 0;border:0;padding:0}.home-page .visual-switcher{width:auto;min-width:0;display:block}.disclosure-trigger{border:1px solid var(--game-line,var(--line));min-width:44px;min-height:44px;color:var(--game-ink,var(--ink));box-shadow:none;font-family:var(--font-display);background:#ffffff38;border-radius:10px;justify-content:center;align-items:center;gap:5px;padding:0 10px;font-weight:950;line-height:1;display:inline-flex}.language-trigger>svg:first-child{display:none}.disclosure-trigger[aria-expanded=true] .disclosure-chevron,details.disclosure[open]>.disclosure-trigger .disclosure-chevron{transform:rotate(180deg)}.disclosure-chevron{transition:transform .18s}.disclosure-panel{z-index:40;border:1px solid var(--game-line,var(--line));background-color:var(--game-paper,var(--paper));color:var(--game-ink,var(--ink));border-radius:14px;position:absolute;top:calc(100% + 8px);right:0;box-shadow:0 14px 32px #051f1142}.home-page .disclosure-panel{background-image:url(/textures/paper-mobile.webp);background-repeat:repeat}.disclosure-panel[hidden]{display:none}.language-menu{width:max-content;min-width:150px;max-width:calc(100vw - 24px);padding:6px}.language-menu a{min-height:44px;color:var(--game-muted,var(--muted));border-radius:9px;justify-content:flex-start;padding:0 12px;font-size:14px;display:flex}.language-menu a.active{background:var(--game-mint,var(--mint));color:var(--game-green-deep,var(--sage))}.settings-panel{width:min(320px,100vw - 24px);padding:12px}.settings-panel-heading{justify-content:space-between;align-items:center;gap:12px;min-height:40px;margin-bottom:8px;display:flex}.settings-panel-heading button{border:1px solid var(--game-line);background:0 0;border-radius:10px;place-items:center;width:40px;height:40px;padding:0;display:grid}.visual-mode-options{gap:8px;display:grid}.home-page .visual-switcher-option{width:100%;min-height:58px;color:var(--game-muted);background:#ffffff57;border:2px solid #0000;padding:8px 10px}.home-page .visual-switcher-option[data-active=true]{border-color:var(--game-green);background:var(--game-mint);color:var(--game-green-deep);box-shadow:none}.home-page .game-hero{width:calc(100% - 16px);min-height:0;padding:2px 0 max(36px, env(safe-area-inset-bottom));grid-template-columns:minmax(0,1fr);gap:0;margin:0 auto;display:grid}.game-paper-frame{--game-paper-edge-top:12px;--game-paper-frame-mask:url(/textures/game-paper-frame-mask-mobile-v9.webp);isolation:isolate;grid-template-columns:minmax(0,1fr);gap:0;min-width:0;display:grid;position:relative}.game-paper-frame:after{content:"";z-index:0;top:calc(var(--game-paper-edge-top) - 31px);pointer-events:none;background-color:var(--game-paper-surface-tint);background-blend-mode:normal;-webkit-mask-image:var(--game-paper-frame-mask);-webkit-mask-image:var(--game-paper-frame-mask);mask-image:var(--game-paper-frame-mask);filter:drop-shadow(0 8px #0d331d33)drop-shadow(0 18px 22px #051f1133);background-image:url(/textures/tactile-paper-fcf2f2-62119fb58dd1.webp);background-position:0 31px;background-repeat:repeat;background-size:192px 192px;position:absolute;bottom:0;left:0;right:0;-webkit-mask-position:50%;mask-position:50%;-webkit-mask-size:100% 100%;mask-size:100% 100%;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat}@supports ((-webkit-mask-box-image:url("/textures/game-paper-frame-mask-mobile-v9.webp") 32 fill)){.game-paper-frame:after{-webkit-mask-box-image-source:var(--game-paper-frame-mask);-webkit-mask-image:none;mask-image:none;-webkit-mask-box-image-slice:32 16 18 fill;-webkit-mask-box-image-width:32px 16px 18px;-webkit-mask-box-image-outset:0;-webkit-mask-box-image-repeat:stretch}}.game-title-block{z-index:1;min-width:0;color:var(--game-ink);background:0 0;border:0;border-radius:0;margin-top:12px;padding:6px 24px 5px;position:relative}.game-title-block:before{content:none;pointer-events:none;filter:none;background:0 0;-webkit-mask:none;mask:none}.game-title-block>*{z-index:2;position:relative}.game-title-block .eyebrow{display:none}.home-page .game-title-block h1{max-width:100%;color:var(--game-green-deep);text-wrap:balance;margin:0;font-size:clamp(22px,6vw,26px);line-height:1.1}.game-hero-summary{max-width:680px;color:var(--game-muted);margin:5px 0 0;font-size:13px;font-weight:700;line-height:1.35}.sudoku-shell{z-index:1;grid-area:auto;width:100%;min-width:0;display:block;position:relative}.game-controls{width:100%;min-width:0;color:var(--game-ink);box-shadow:none;background:0 0;border:0;border-radius:0;grid-template-columns:auto minmax(0,1fr);gap:6px 8px;padding:4px 0 20px;display:grid}.game-summary{grid-area:1/2;align-self:center;min-width:0;margin-right:20px}.controls-title{clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.game-summary-metrics{justify-content:flex-start;align-items:center;gap:0;display:flex}.game-summary-metrics>div{border:0;border-left:1px solid var(--game-line);background:0 0;border-radius:0;align-items:center;gap:5px;min-width:0;min-height:38px;padding:0 9px;display:flex}.game-summary-metrics>div:nth-child(n+3){display:none}.game-summary-metrics span,.game-summary-metrics strong{color:var(--game-ink);white-space:nowrap;font-size:clamp(11px,3.15vw,13px);font-weight:900;line-height:1.1;overflow:hidden}.game-summary-metrics strong,.game-timer{font-family:var(--font-mono);font-variant-numeric:tabular-nums}.game-timer{align-items:center;gap:4px;display:inline-flex}.board-stage{display:contents}.game-board-wrap{width:min(520px,100% - 40px);min-width:0;box-shadow:none;background:0 0;border:0;border-radius:0;grid-area:2/1/auto/-1;justify-self:center;padding:0;display:block}.board-top{grid-area:1/1;align-items:center;min-height:38px;margin:0 0 0 20px;display:flex}.board-top>span{background:var(--game-mint);min-height:32px;color:var(--game-green-deep);text-transform:capitalize;white-space:nowrap;border:1px solid #075d3980;border-radius:9px;align-items:center;padding:0 10px;font-size:13px;font-weight:950;line-height:1;display:inline-flex}.sudoku-board{aspect-ratio:1;border:3px solid var(--game-line-strong);background:var(--game-paper);contain:layout paint;grid-template-rows:repeat(9,minmax(0,1fr));grid-template-columns:minmax(0,1fr);width:100%;min-width:0;max-width:none;display:grid}.sudoku-row{grid-template-columns:repeat(9,minmax(0,1fr));min-width:0;min-height:0;display:grid}.cell{border:0;border-right:1px solid var(--game-line);border-bottom:1px solid var(--game-line);background-blend-mode:soft-light;min-width:0;min-height:0;color:var(--game-ink);box-shadow:none;touch-action:manipulation;background-color:#fffaf0;background-image:url(/textures/paper-mobile.webp);background-repeat:repeat;border-radius:0;font-size:clamp(18px,7.1vw,29px);font-weight:900}.sudoku-row:last-child .cell{border-bottom:0}.sudoku-row .cell:last-child{border-right:0}.sudoku-row .cell:nth-child(3n):not(:last-child){border-right:3px solid var(--game-line-strong)}.sudoku-row:nth-child(3n):not(:last-child) .cell{border-bottom:3px solid var(--game-line-strong)}.cell.fixed{background-color:var(--game-fixed);background-blend-mode:multiply;color:var(--game-ink);background-image:url(/textures/paper-mobile.webp);background-repeat:repeat}.cell.related{background:var(--game-related)}.cell.same-value{background:#c8e4c8}.cell.selected{z-index:1;outline:3px solid var(--game-green);outline-offset:-3px;background:#b8dcb8}.cell.wrong{color:#7f1711;box-shadow:inset 0 0 0 3px var(--game-error);background:#f7d4cd}.cell.wrong:after{color:var(--game-error);content:"!";font-family:var(--font-body);font-size:10px;font-weight:950;line-height:1;position:absolute;top:1px;right:2px}.cell:focus-visible{z-index:2;outline:3px solid var(--game-green-deep);outline-offset:-3px;box-shadow:inset 0 0 0 5px #ffffffd1}.notes{color:var(--game-muted);font-size:clamp(7px,2.35vw,10px)}.number-strip{border:1px solid #1f1a1261;border-radius:11px;grid-area:3/1/auto/-1;grid-template-columns:repeat(9,minmax(0,1fr));gap:0;min-width:0;margin-inline:20px;display:grid;overflow:hidden}.number-strip button,.home-page .number-pad button{border:0;border-right:1px solid var(--game-line);min-width:0;min-height:50px;color:var(--game-ink);box-shadow:none;background:#ffffff40;border-radius:0;padding:0;font-size:clamp(20px,7vw,28px)}.number-strip button:last-child{border-right:0}.number-strip.notes-mode{border-color:var(--game-green);box-shadow:0 0 0 2px #087a4924}.number-strip.notes-mode button{background:var(--game-mint);color:var(--game-green-deep)}.game-status,.game-controls .game-status{min-height:44px;max-height:44px;color:var(--game-ink);text-align:center;background:#f1efd5;border:0;border-radius:10px;grid-area:4/1/auto/-1;justify-content:center;align-items:center;margin:0 20px;padding:6px 10px;font-size:clamp(12px,3.4vw,14px);font-weight:850;line-height:1.25;display:flex;overflow:hidden}.game-status.solved{border:1px solid var(--game-green);color:var(--game-green-deep)}.primary-tools{border:1px solid var(--game-line);border-radius:11px;grid-area:5/1/auto/-1;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;min-width:0;margin-inline:20px;display:grid;overflow:hidden}.primary-tools .tool{border:0;border-right:1px solid var(--game-line);min-width:0;min-height:58px;color:var(--game-green-deep);box-shadow:none;overflow-wrap:anywhere;background:#ffffff38;border-radius:0;flex-direction:column;gap:4px;padding:5px 2px;font-size:clamp(10px,3vw,12px);font-weight:900;line-height:1.05;display:flex}.primary-tools .tool:last-child{border-right:0}.primary-tools .tool.active{background:var(--game-green);color:#fffdf4}.difficulty:disabled,.tool:disabled,.number-pad button:disabled{cursor:not-allowed;opacity:.42;filter:grayscale(.55)}.secondary-actions{grid-area:6/1/auto/-1;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;min-width:0;margin-inline:20px;display:grid}.secondary-new-game{grid-area:1/1}.secondary-actions .board-difficulty{grid-area:1/2;width:100%;margin:0;display:block}.secondary-actions .difficulty,.secondary-actions .new-game{border:1px solid var(--game-line);width:100%;min-width:0;min-height:44px;color:var(--game-ink);box-shadow:none;background:#ffffff3d;border-radius:10px;margin:0;padding:0 5px;font-size:clamp(10px,3vw,13px)}.secondary-actions .difficulty.active{border-color:var(--game-green);background:var(--game-mint);color:var(--game-green-deep)}.secondary-actions .new-game{background:var(--game-gold);border-color:#1f1a1280;min-height:48px;font-size:14px}.game-supporting-copy{grid-area:auto;width:min(100%,1000px);min-width:0;margin:0 auto;padding-top:28px}.game-supporting-copy .hero-text{color:#fff8e8d1}.game-supporting-copy .paper-note{border-left-color:var(--game-gold);background-color:var(--game-paper);color:var(--game-ink);background-image:url(/textures/paper-mobile.webp);background-repeat:repeat;padding:14px 16px}.game-supporting-copy .paper-note p{color:var(--game-muted)}.game-confirm-dialog{width:min(430px,100% - 24px);max-width:none;color:var(--game-ink);background:0 0;border:0;border-radius:18px;padding:0}.game-confirm-dialog::backdrop{background:#04180db8}.game-confirm-panel{border:1px solid var(--game-line);background-color:var(--game-paper);background-image:url(/textures/paper-mobile.webp);background-repeat:repeat;border-radius:18px;padding:22px;box-shadow:0 24px 60px #04180d5c}.game-confirm-panel h2{margin-bottom:10px;font-size:25px}.game-confirm-panel p{color:var(--game-muted);margin-bottom:20px;line-height:1.55}.game-confirm-actions{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.game-confirm-actions button{border:1px solid var(--game-line);background:0 0;border-radius:10px;min-height:48px;padding:6px 10px;font-weight:900}.game-confirm-actions .dialog-confirm{border-color:var(--game-green-deep);background:var(--game-green);color:#fffdf4}.logic-coach-dialog{width:min(470px,100% - 24px);max-width:none;max-height:min(720px,100svh - 24px);color:var(--game-ink);background:0 0;border:0;border-radius:18px;padding:0;overflow:auto}.logic-coach-dialog::backdrop{background:#04180d94}.logic-coach-panel{border:1px solid var(--game-line);background-color:var(--game-paper);background-image:url(/textures/paper-mobile.webp);background-repeat:repeat;border-radius:18px;padding:22px;box-shadow:0 24px 60px #04180d5c}.logic-coach-eyebrow{color:var(--game-green-deep);letter-spacing:.08em;text-transform:uppercase;margin:0 0 5px;font-size:11px;font-weight:950}.logic-coach-panel h2{margin:0 0 12px;font-size:clamp(23px,7vw,28px)}.logic-coach-panel>p:not(.logic-coach-eyebrow,.logic-coach-technique){color:var(--game-muted);margin:0 0 20px;line-height:1.55}.logic-coach-technique{border-left:4px solid var(--game-gold);background:var(--game-mint);border-radius:8px;gap:2px;margin:0 0 12px;padding:10px 12px;display:grid}.logic-coach-technique strong{color:var(--game-green-deep);font-size:15px}.logic-coach-technique span{color:var(--game-muted);font-size:11px;font-weight:800}.logic-coach-actions{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.logic-coach-actions button{border:1px solid var(--game-line);border-radius:10px;min-height:48px;padding:7px 10px;font-weight:900}.logic-coach-actions .coach-primary{border-color:var(--game-green-deep);background:var(--game-green);color:#fffdf4}.logic-coach-actions .coach-secondary{color:var(--game-ink);background:0 0}.cell.coach-unit:not(.coach-target){box-shadow:inset 0 0 0 2px #087a4961}.cell.coach-target{z-index:3;outline:4px dashed var(--game-gold);outline-offset:-5px;background-color:#d8ebbc}body[data-home-visual=nocturne] .logic-coach-panel{border-color:var(--nocturne-line);background-color:var(--nocturne-paper);background-image:var(--nocturne-texture-paper);color:var(--nocturne-ink)}body[data-home-visual=nocturne] .logic-coach-panel>p:not(.logic-coach-eyebrow,.logic-coach-technique),body[data-home-visual=nocturne] .logic-coach-technique span{color:var(--game-muted)}body[data-home-visual=nocturne] .logic-coach-eyebrow,body[data-home-visual=nocturne] .logic-coach-technique strong{color:var(--game-gold)}body[data-home-visual=nocturne] .logic-coach-technique{border-left-color:var(--game-gold);background-color:var(--game-paper-muted);background-image:var(--nocturne-texture-paper-muted)}body[data-home-visual=nocturne] .logic-coach-actions .coach-primary{border-color:var(--game-gold);background:var(--game-green);color:var(--game-ink)}body[data-home-visual=nocturne] .logic-coach-actions .coach-secondary{border-color:var(--nocturne-line);color:var(--nocturne-ink)}body[data-home-visual=nocturne] .cell.coach-unit:not(.coach-target){box-shadow:inset 0 0 0 2px #d7ae5b66}body[data-home-visual=nocturne] .cell.coach-target{outline-color:var(--game-gold);background-color:var(--game-paper-muted);background-image:var(--nocturne-texture-paper-muted)}@media (max-width:420px){.logic-coach-panel{padding:18px}.logic-coach-actions{grid-template-columns:minmax(0,1fr)}}@media (orientation:landscape) and (max-height:500px){.logic-coach-dialog{width:min(560px,100% - 24px);max-height:calc(100svh - 16px)}.logic-coach-panel{padding:14px 18px}.logic-coach-panel h2{margin-bottom:7px;font-size:22px}.logic-coach-technique,.logic-coach-panel>p:not(.logic-coach-eyebrow,.logic-coach-technique){margin-bottom:9px}.logic-coach-actions button{min-height:44px}}.practice-dialog{width:min(520px,100% - 24px);max-width:none;max-height:calc(100svh - 24px);color:var(--game-ink);background:0 0;border:0;border-radius:18px;padding:0;overflow:auto}.practice-dialog::backdrop{background:#04180dad}.practice-panel{border:1px solid var(--game-line);background-color:var(--game-paper);background-image:url(/textures/paper-mobile.webp);background-repeat:repeat;border-radius:18px;padding:20px;box-shadow:0 24px 60px #04180d5c}.practice-progress{color:var(--game-green-deep);letter-spacing:.08em;text-transform:uppercase;margin:0 0 3px;font-size:11px;font-weight:950}.practice-panel h2{margin:0 0 4px;font-size:clamp(22px,6vw,27px)}.practice-technique{color:var(--game-green-deep);margin-bottom:6px;font-size:14px;display:block}.practice-panel>p:not(.practice-progress,.practice-feedback){color:var(--game-muted);margin:0 0 12px;font-size:13px;line-height:1.45}.practice-board{border-top:3px solid var(--game-line-strong);border-left:3px solid var(--game-line-strong);background:var(--game-paper);width:min(100%,342px);margin:0 auto 10px;display:grid}.practice-row{grid-template-columns:repeat(9,minmax(0,1fr));display:grid}.practice-row:nth-child(3n) .practice-cell{border-bottom-width:3px;border-bottom-color:var(--game-line-strong)}.practice-cell{aspect-ratio:1;border:0;border-right:1px solid var(--game-line);border-bottom:1px solid var(--game-line);min-width:0;min-height:0;color:var(--game-ink);background:#ffffff2e;border-radius:0;padding:0;font-size:clamp(11px,3.2vw,16px);font-weight:850}.practice-cell:nth-child(3n){border-right-width:3px;border-right-color:var(--game-line-strong)}.practice-cell.fixed{background:var(--game-paper-muted);font-weight:950}.practice-cell.practice-unit:not(.practice-target){box-shadow:inset 0 0 0 2px #087a4947}.practice-cell.practice-target{z-index:2;outline:3px dashed var(--game-gold);outline-offset:-4px;background:var(--game-mint);position:relative}.practice-cell.selected{outline:3px solid var(--game-green-deep);outline-offset:-4px}.practice-cell.wrong{color:var(--game-error);box-shadow:inset 0 0 0 3px var(--game-error)}.practice-number-pad{grid-template-columns:repeat(9,minmax(0,1fr));gap:4px;display:grid}.practice-number-pad button{border:1px solid var(--game-line);min-width:0;min-height:44px;color:var(--game-green-deep);background:0 0;border-radius:8px;padding:0;font-size:16px;font-weight:950}.practice-feedback{min-height:42px;color:var(--game-muted);margin:10px 0;font-size:13px;line-height:1.45}.practice-feedback.correct{color:var(--game-green-deep);font-weight:850}.practice-feedback.incorrect,.practice-feedback.unavailable{color:var(--game-error);font-weight:850}.practice-actions{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.practice-actions button{border:1px solid var(--game-line);border-radius:10px;min-height:48px;padding:7px 10px;font-weight:900}.practice-actions .practice-primary{border-color:var(--game-green-deep);background:var(--game-green);color:#fffdf4}.practice-actions .practice-secondary{color:var(--game-ink);background:0 0}body[data-home-visual=nocturne] .practice-panel{border-color:var(--game-line);background-color:var(--game-paper);background-image:var(--nocturne-texture-paper);color:var(--game-ink)}body[data-home-visual=nocturne] .practice-cell{background-color:var(--game-paper);background-image:var(--nocturne-texture-cell)}body[data-home-visual=nocturne] .practice-cell.fixed{background-color:var(--game-paper-muted);background-image:var(--nocturne-texture-cell-fixed)}body[data-home-visual=nocturne] .practice-cell.practice-target{background-color:var(--game-mint);background-image:var(--nocturne-texture-cell-selected)}@media (max-width:420px){.practice-dialog{width:calc(100% - 16px);max-height:calc(100svh - 16px)}.practice-panel{padding:14px}.practice-number-pad{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (orientation:landscape) and (max-height:500px){.practice-dialog{width:min(680px,100% - 16px);max-height:calc(100svh - 12px)}.practice-panel{padding:12px 16px}.practice-board{width:min(100%,250px)}.practice-feedback{min-height:0;margin:7px 0}}body[data-home-visual=nocturne] .home-page{--nocturne-texture-outer:url(/textures/nocturne-outer-191c19-e722b3adf3fe.webp);--nocturne-texture-paper:url(/textures/nocturne-paper-173824-4dad13fb98a0.webp);--nocturne-texture-paper-muted:url(/textures/nocturne-paper-muted-244b32-d5293ecef92b.webp);--nocturne-texture-cell:url(/textures/nocturne-cell-1b402a-a99a22a60650.webp);--nocturne-texture-cell-fixed:url(/textures/nocturne-cell-fixed-31583a-6f202ce8498e.webp);--nocturne-texture-cell-hover:url(/textures/nocturne-cell-hover-234a30-40b08a0a9068.webp);--nocturne-texture-cell-related:url(/textures/nocturne-cell-related-22472f-6ab310788cb9.webp);--nocturne-texture-cell-same:url(/textures/nocturne-cell-same-316443-2d53eae86c04.webp);--nocturne-texture-cell-selected:url(/textures/nocturne-cell-selected-52602f-278d760b8110.webp);--nocturne-texture-cell-wrong:url(/textures/nocturne-cell-wrong-612d28-cdb54883cd56.webp);--game-felt:var(--nocturne-outer-paper,#191c19);--game-felt-deep:#111511;--game-paper:#173824;--game-paper-surface-tint:#173824;--game-paper-muted:#244b32;--game-ink:#f6efd9;--game-muted:#b8c7b7;--game-line:#f6efd93d;--game-line-strong:#e8dfc8;--game-green:#82bd91;--game-green-deep:#b8ddb9;--game-mint:#284f35;--game-related:#22472f;--game-fixed:#31583a;--game-gold:#e9b933;--game-error:#ff8a75;color:var(--game-ink);background-color:var(--game-felt);background-image:var(--nocturne-texture-outer);background-blend-mode:normal;background-repeat:repeat}body[data-home-visual=nocturne]:has(.home-page){--nocturne-outer-paper:#191c19;background-color:var(--nocturne-outer-paper);background-blend-mode:normal;background-image:url(/textures/nocturne-outer-191c19-e722b3adf3fe.webp);background-repeat:repeat;background-size:192px 192px}body[data-home-visual=nocturne] .home-page .nav{background-blend-mode:normal;background-color:#0000;background-image:none}body[data-home-visual=nocturne] .home-page .nav:after{content:"";z-index:0;pointer-events:none;background-color:var(--game-paper-surface-tint);background-image:var(--nocturne-texture-paper);background-blend-mode:normal;-webkit-mask-image:var(--header-paper-mask);-webkit-mask-image:var(--header-paper-mask);mask-image:var(--header-paper-mask);-webkit-mask-position:top;mask-position:top;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-size:var(--header-paper-mask-size);-webkit-mask-size:var(--header-paper-mask-size);mask-size:var(--header-paper-mask-size);background-repeat:repeat;background-size:192px 192px;position:absolute;inset:0}body[data-home-visual=nocturne] .disclosure-trigger,body[data-home-visual=nocturne] .disclosure-panel,body[data-home-visual=nocturne] .game-confirm-panel{background-color:var(--game-paper);background-image:var(--nocturne-texture-paper);background-blend-mode:normal;color:var(--game-ink);background-repeat:repeat}body[data-home-visual=nocturne] .home-page .brand,body[data-home-visual=nocturne] .home-page .disclosure-trigger{color:var(--game-ink);background:0 0}body[data-home-visual=nocturne] .home-page .visual-switcher-option{color:var(--game-muted);box-shadow:none;background-color:#f6efd914;background-image:none;border-color:#0000}body[data-home-visual=nocturne] .home-page .visual-switcher-option[data-active=true],body[data-home-visual=nocturne] .home-page .visual-switcher-option-dark[data-active=true]{border-color:var(--game-gold);background-color:#244b32;background-image:var(--nocturne-texture-paper-muted);background-blend-mode:normal;color:var(--game-ink);box-shadow:none;background-repeat:repeat}body[data-home-visual=nocturne] .home-page .brand-mark,body[data-home-visual=nocturne] .secondary-actions .new-game{color:#1c1a0f}body[data-home-visual=nocturne] .game-paper-frame:after{background-color:var(--game-paper-surface-tint);background-image:var(--nocturne-texture-paper);background-blend-mode:normal;filter:drop-shadow(0 5px #1b402aeb)drop-shadow(0 10px 14px #010c0724);background-repeat:repeat}body[data-home-visual=nocturne] .home-page .board-stage{box-shadow:none;background:#ffffff29;border:0}body[data-home-visual=nocturne] .home-page .game-title-block h1{color:var(--game-green-deep)}body[data-home-visual=nocturne] .game-controls{box-shadow:none;background:0 0}body[data-home-visual=nocturne] .game-controls .metric-grid div,body[data-home-visual=nocturne] .game-controls .game-status{border-color:var(--game-line);background:#203f2b}body[data-home-visual=nocturne] .home-page .game-controls .status,body[data-home-visual=nocturne] .home-page .game-controls .game-status{color:var(--game-ink)}body[data-home-visual=nocturne] .game-summary-metrics>div{background:0 0}body[data-home-visual=nocturne] .game-summary-metrics span,body[data-home-visual=nocturne] .game-summary-metrics strong,body[data-home-visual=nocturne] .board-top>span,body[data-home-visual=nocturne] .primary-tools .tool,body[data-home-visual=nocturne] .secondary-actions .difficulty,body[data-home-visual=nocturne] .number-strip button{color:var(--game-ink)}body[data-home-visual=nocturne] .board-top>span,body[data-home-visual=nocturne] .secondary-actions .difficulty.active{background:var(--game-mint);color:var(--game-green-deep);border-color:#b8ddb97a}body[data-home-visual=nocturne] .number-strip button,body[data-home-visual=nocturne] .primary-tools .tool,body[data-home-visual=nocturne] .secondary-actions .difficulty{background:#f6efd90f}body[data-home-visual=nocturne] .home-page .number-strip,body[data-home-visual=nocturne] .home-page .primary-tools,body[data-home-visual=nocturne] .home-page .tool{border-color:var(--game-line)}body[data-home-visual=nocturne] .home-page .number-pad button{border-color:var(--game-line);color:var(--game-ink);background:#f6efd914}body[data-home-visual=nocturne] .home-page .number-strip.notes-mode{border-color:var(--game-gold);box-shadow:0 0 0 2px #e9b9332e}body[data-home-visual=nocturne] .home-page .number-strip.notes-mode button{background:var(--game-mint);color:var(--game-green-deep)}body[data-home-visual=nocturne] .home-page .number-pad button:disabled,body[data-home-visual=nocturne] .home-page .tool:disabled,body[data-home-visual=nocturne] .home-page .difficulty:disabled{opacity:.56;filter:none}body[data-home-visual=nocturne] .home-page .primary-tools .tool.active{background:var(--game-green);color:#102a1b}body[data-home-visual=nocturne] .game-board-wrap,body[data-home-visual=nocturne] .sudoku-board{background:var(--game-paper)}body[data-home-visual=nocturne] .home-page .game-board-wrap{color:var(--game-ink)}body[data-home-visual=nocturne] .home-page .sudoku-board{border-color:var(--game-line-strong)}body[data-home-visual=nocturne] .cell{border-color:var(--game-line);background-color:#1b402a;background-image:var(--nocturne-texture-cell);background-blend-mode:normal;color:var(--game-ink);background-repeat:repeat}body[data-home-visual=nocturne] .cell.fixed{background-color:var(--game-fixed);background-image:var(--nocturne-texture-cell-fixed);background-blend-mode:normal;background-repeat:repeat}body[data-home-visual=nocturne] .home-page .cell:not(.fixed):not(.related):not(.same-value):not(.selected):not(.wrong):hover{background-color:#234a30;background-image:var(--nocturne-texture-cell-hover);background-blend-mode:normal;background-repeat:repeat}body[data-home-visual=nocturne] .cell.related{background-color:var(--game-related);background-image:var(--nocturne-texture-cell-related);background-blend-mode:normal;background-repeat:repeat}body[data-home-visual=nocturne] .cell.same-value{background-color:#316443;background-image:var(--nocturne-texture-cell-same);background-blend-mode:normal;background-repeat:repeat}body[data-home-visual=nocturne] .cell.selected{outline-color:var(--game-gold);background-color:#52602f;background-image:var(--nocturne-texture-cell-selected);background-blend-mode:normal;background-repeat:repeat}body[data-home-visual=nocturne] .cell:focus-visible{outline-color:var(--game-gold);box-shadow:inset 0 0 0 5px #f6efd933}body[data-home-visual=nocturne] .cell.wrong{background-color:#612d28;background-image:var(--nocturne-texture-cell-wrong);background-blend-mode:normal;color:#ffd9cf;background-repeat:repeat}body[data-home-visual=nocturne] .home-how-panel,body[data-home-visual=nocturne] .game-supporting-copy .paper-note{background-color:var(--game-paper);background-image:var(--nocturne-texture-paper);background-blend-mode:normal;color:var(--game-ink);background-repeat:repeat}@media (max-width:799px){.home-page .section,.home-page .footer{width:calc(100% - 24px)}.home-page .game-supporting-copy,.home-page .paper-note{width:100%}}@media (max-width:560px){.home-page .brand>span:last-child{text-overflow:ellipsis;min-width:0;overflow:hidden}.settings-trigger{padding-inline:9px}}@media (min-width:561px) and (max-width:799px){.home-page .game-hero{width:min(546px,100% - 16px)}.home-page .game-title-block h1{font-size:27px}}@media (min-width:320px) and (max-width:430px){.article-page .nav-actions .language-menu,.legal-topbar .language-menu{left:0;right:auto}}@media (max-width:350px){.home-page .brand{font-size:14px}.home-page .brand-mark{flex-basis:38px;width:38px;height:38px}.language-trigger{padding-inline:7px}.game-summary-metrics>div{padding-inline:6px}.primary-tools .tool{font-size:9px}}@media (min-width:800px){.home-page .nav{--header-paper-mask:url(/textures/header-paper-crafted-desktop-v7.webp);--header-paper-mask-size:100% 96px;width:min(1000px,100% - 24px);min-height:96px;margin-top:max(14px, env(safe-area-inset-top));background-image:url(/textures/header-paper-crafted-desktop-v7.webp);margin-bottom:4px;padding:11px 28px 41px 18px}.home-page .brand{font-size:20px}.language-trigger>svg:first-child{display:block}.home-page .game-hero{gap:0;width:min(1000px,100% - 24px);padding:12px 0 52px}.game-paper-frame{--game-paper-edge-top:16px;--game-paper-frame-mask:url(/textures/game-paper-frame-mask-desktop-v9.webp)}.game-title-block{color:var(--game-ink);background:0 0;border:0;border-radius:0;margin-top:16px;padding:6px 32px 5px}.home-page .game-title-block h1{max-width:100%;color:var(--game-green-deep);font-size:clamp(28px,3vw,30px);line-height:1.08}.game-controls{border:0;border-radius:0;grid-template-rows:auto auto auto auto auto;grid-template-columns:minmax(0,1fr) clamp(240px,31vw,310px);gap:14px;padding:32px}.board-stage{min-width:0;box-shadow:none;background:#ffffff29;border:0;border-radius:14px;grid-area:1/1/span 5;align-self:start;padding:8px;display:block}.game-board-wrap{background:0 0;width:min(560px,100%);margin:0 auto;padding:0;display:block}.board-top{display:none}.sudoku-board{width:100%;max-width:560px}.cell{font-size:clamp(22px,3.25vw,31px)}.notes{font-size:clamp(8px,1.15vw,11px)}.game-summary{grid-area:1/2;margin:0}.controls-title{clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.game-summary-metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;display:grid}.game-summary-metrics>div,.game-summary-metrics>div:nth-child(n+3){border:1px solid var(--game-line);background:#ffffff3d;border-radius:9px;align-content:center;gap:3px;min-height:44px;padding:6px 8px;display:grid}.game-summary-metrics span{color:var(--game-muted);font-size:10px}.game-summary-metrics strong{font-size:14px}.number-strip{border:0;border-radius:0;grid-area:2/2;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;margin:0;overflow:visible}.number-strip button,.number-strip button:last-child,.home-page .number-pad button{border:1px solid var(--game-line);border-radius:9px;min-height:46px;font-size:23px}.game-status,.game-controls .game-status{grid-area:3/2;min-height:48px;max-height:48px;font-size:13px}.primary-tools{border:0;border-radius:0;grid-area:4/2;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;margin:0;overflow:visible}.primary-tools .tool,.primary-tools .tool:last-child{border:1px solid var(--game-line);border-radius:9px;flex-direction:row;min-height:46px;padding:5px 8px;font-size:12px}.primary-tools .tool:last-child{grid-column:1/-1}.secondary-actions{grid-area:5/2;margin:0}.secondary-actions .new-game{min-height:50px}.game-supporting-copy{padding-top:24px}}@media (min-width:900px){.game-controls{grid-template-columns:minmax(0,560px) minmax(240px,1fr)}}@media (min-width:800px) and (max-width:819px){.game-controls{column-gap:10px;padding-inline:16px}.board-stage{padding-inline:6px}}@media (min-width:800px) and (max-height:720px){.game-hero-summary{display:none}}@media (min-width:820px) and (max-width:899px){.game-controls{column-gap:10px;padding-inline:24px}.board-stage{padding-inline:6px}}@media (min-width:1160px){.home-page .game-hero{grid-template-columns:minmax(0,1fr);gap:0;width:min(1000px,100% - 40px)}.game-title-block{grid-area:auto;padding:7px 32px 6px}.home-page .game-title-block h1{font-size:30px}.sudoku-shell{grid-area:auto}.game-controls{grid-template-columns:minmax(0,1fr) clamp(290px,31vw,310px);gap:18px;padding:32px}.board-stage{padding:12px}.game-supporting-copy{grid-area:auto;padding-top:28px}}@media (orientation:landscape) and (max-width:949px) and (max-height:500px){.home-page .nav{--header-paper-mask:url(/textures/header-paper-crafted-desktop-v7.webp);--header-paper-mask-size:100% 63px;width:auto;min-height:63px;margin:max(8px, env(safe-area-inset-top)) max(8px, var(--game-safe-right)) 3px max(8px, var(--game-safe-left));background-image:url(/textures/header-paper-crafted-desktop-v7.webp);background-size:100% 63px;padding:4px 18px 15px 12px}.home-page .brand{min-height:44px;padding-block:2px;font-size:16px}.home-page .brand-mark{flex-basis:36px;width:36px;height:36px;font-size:21px}.disclosure-trigger{min-height:44px}.home-page .game-hero{--landscape-board-size:min(520px, calc(100svh - 132px), calc(100vw - 238px - var(--game-safe-left) - var(--game-safe-right)));width:auto;margin-right:max(8px, var(--game-safe-right));margin-left:max(8px, var(--game-safe-left));padding:2px 0 max(12px, env(safe-area-inset-bottom));grid-template-columns:minmax(0,1fr);gap:0;display:grid}.game-paper-frame{--game-paper-edge-top:4px;--game-paper-frame-mask:url(/textures/game-paper-frame-mask-desktop-v9.webp)}.game-title-block{background:0 0;border:0;border-radius:0;margin-top:4px;padding:2px 18px 1px}.game-title-block .eyebrow{display:none}.home-page .game-title-block h1{max-width:none;color:var(--game-green-deep);margin:0;font-size:18px;line-height:1.1}.game-hero-summary{display:none}.game-controls{grid-template-columns:minmax(0, var(--landscape-board-size)) minmax(0, 1fr);border:0;border-radius:0;grid-template-rows:auto auto auto auto auto;gap:5px 8px;padding:14px}.board-stage{background:0 0;border:0;border-radius:0;grid-area:1/1/span 5;align-self:start;padding:0;display:block}.game-board-wrap{width:100%;padding:0;display:block}.board-top{display:none}.sudoku-board{width:min(100%, var(--landscape-board-size));max-width:none}.cell{font-size:clamp(17px,5.2vh,24px)}.notes{font-size:clamp(6px,1.8vh,9px)}.game-summary{grid-area:1/2;margin:0}.controls-title{clip:rect(0 0 0 0);clip-path:inset(50%);width:1px;height:1px;position:absolute;overflow:hidden}.game-summary-metrics{gap:0;display:flex}.game-summary-metrics>div,.game-summary-metrics>div:nth-child(n+3){border:0;border-left:1px solid var(--game-line);background:0 0;border-radius:0;flex:1 1 0;justify-content:center;align-items:center;gap:4px;min-height:38px;padding:0 5px;display:flex}.game-summary-metrics>div:nth-child(n+3){display:none}.game-summary-metrics span,.game-summary-metrics strong{font-size:11px}.number-strip{border:1px solid var(--game-line);border-radius:9px;grid-area:2/2;grid-template-columns:repeat(9,minmax(0,1fr));gap:0;margin:0;overflow:hidden}.number-strip button,.number-strip button:last-child,.home-page .number-pad button{border:0;border-right:1px solid var(--game-line);border-radius:0;min-height:48px;font-size:19px}.number-strip button:last-child{border-right:0}.game-status,.game-controls .game-status{grid-area:3/2;min-height:40px;max-height:40px;padding-block:4px;font-size:11px}.primary-tools{border:1px solid var(--game-line);border-radius:9px;grid-area:4/2;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;margin:0;overflow:hidden}.primary-tools .tool,.primary-tools .tool:last-child{border:0;border-right:1px solid var(--game-line);border-radius:0;flex-direction:column;gap:2px;min-height:44px;padding:3px 1px;font-size:9px}.primary-tools .tool:last-child{border-right:0;grid-column:auto}.primary-tools .tool svg{width:15px;height:15px}.secondary-actions{grid-area:5/2;grid-template-columns:repeat(2,minmax(0,1fr));gap:5px;margin:0}.secondary-actions .board-difficulty{grid-column:2}.secondary-actions .new-game{grid-area:1/1;min-height:44px;font-size:11px}.secondary-actions .difficulty{min-height:44px;padding-inline:2px;font-size:9px}.game-supporting-copy{padding-top:24px}}@media (orientation:landscape) and (min-width:950px) and (max-height:820px),(orientation:landscape) and (min-width:800px) and (max-width:949px) and (min-height:501px) and (max-height:820px){.home-page .nav{--header-paper-mask:url(/textures/header-paper-crafted-desktop-v7.webp);--header-paper-mask-size:100% clamp(63px, calc(11.4375px + 10.3125svh), 96px);width:min(1000px,100% - 24px);min-height:clamp(63px,11.4375px + 10.3125svh,96px);padding:max(clamp(4px, calc(-6.9375px + 2.1875svh), 11px), env(safe-area-inset-top)) 28px clamp(15px, calc(-25.625px + 8.125svh), 41px) 18px;background-image:url(/textures/header-paper-crafted-desktop-v7.webp);background-size:100% clamp(63px,11.4375px + 10.3125svh,96px);margin:clamp(8px,1.875svh - 1.375px,14px) auto clamp(-6px,17.0625px - 2.8125svh,-3px)}.home-page .brand{min-height:44px;padding-block:2px;font-size:clamp(16px,9.75px + 1.25svh,20px)}.home-page .brand-mark{flex-basis:clamp(36px,23.5px + 2.5svh,44px);width:clamp(36px,23.5px + 2.5svh,44px);height:clamp(36px,23.5px + 2.5svh,44px);font-size:clamp(21px,13.1875px + 1.5625svh,26px)}.home-page .game-hero{--desktop-low-board-size:min(560px, calc(71.25svh + 10px), calc(100vw - 350px));width:min(1000px,100% - 24px);padding:clamp(0px, calc(-18.75px + 3.75svh), 12px) 0 max(12px, env(safe-area-inset-bottom));gap:0}.game-paper-frame{--game-paper-edge-top:clamp(4px, calc(-14.7875px + 3.75svh), 16px);--game-paper-frame-mask:url(/textures/game-paper-frame-mask-desktop-v9.webp)}.game-title-block{margin-top:clamp(4px,3.75svh - 14.7875px,16px);padding:clamp(2px,1.25svh - 4.2625px,6px) 28px clamp(1px,1.25svh - 5.2625px,5px)}.game-title-block .eyebrow{display:none}.home-page .game-title-block h1{margin:0;font-size:clamp(20px,2.375px + 3.125svh,28px)}.game-controls{grid-template-columns:minmax(0, var(--desktop-low-board-size)) minmax(240px, 1fr);gap:clamp(4px,3.125svh - 11.625px,14px);padding:clamp(16px,3.65svh - 2.3px,24px)}.board-stage{padding-block:clamp(0px,1.875svh - 9.375px,6px);padding-inline:clamp(0px,1.875svh - 9.375px,6px)}.game-board-wrap{width:min(100%, var(--desktop-low-board-size))}.sudoku-board{width:100%;max-width:var(--desktop-low-board-size)}.game-summary-metrics{gap:clamp(4px,.875px + .625svh,6px)}.game-summary-metrics>div,.game-summary-metrics>div:nth-child(n+3){min-height:clamp(32px,13.25px + 3.75svh,44px)}.number-strip,.primary-tools{gap:clamp(4px,.875px + .625svh,6px)}.number-strip button,.number-strip button:last-child,.home-page .number-pad button,.primary-tools .tool,.primary-tools .tool:last-child{min-height:clamp(32px,10.125px + 4.375svh,46px)}.game-status,.game-controls .game-status{min-height:clamp(34px,12.125px + 4.375svh,48px);max-height:clamp(34px,12.125px + 4.375svh,48px)}.primary-tools .tool,.primary-tools .tool:last-child{font-size:clamp(11px,9.4375px + .3125svh,12px)}.secondary-actions .new-game,.secondary-actions .difficulty{min-height:clamp(40px,24.375px + 3.125svh,50px);font-size:clamp(11px,7.875px + .625svh,13px)}.home-page .game-hero{--landscape-board-size:var(--desktop-low-board-size)}}@media (orientation:landscape) and (min-width:800px) and (min-height:821px) and (max-height:840px){.game-controls{padding:clamp(24px,40svh - 304.4px,32px)}}@media (prefers-reduced-motion:reduce){.disclosure-chevron,.disclosure-trigger,.home-page .brand,.primary-tools .tool,.secondary-actions button{transition:none}.disclosure-trigger:hover,.home-page .brand:hover,.primary-tools .tool:hover,.secondary-actions button:hover{transform:none}}.home-how-story{width:min(1000px,100% - 24px);margin:-14px auto 56px}.home-scroll-cue{color:#fff8e8e6;text-align:center;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;gap:1px;width:max-content;max-width:100%;min-height:48px;margin:0 auto 18px;padding:4px 10px;font-size:13px;font-weight:850;line-height:1.15;text-decoration:none;display:flex}.home-scroll-cue svg{flex:none}.home-scroll-cue:hover{color:var(--game-paper)}.home-scroll-cue:focus-visible{outline:3px solid var(--game-gold);outline-offset:3px}.home-how-panel{border:1px solid var(--game-line);background-color:var(--game-paper);min-width:0;color:var(--game-ink);background-image:url(/textures/paper-mobile.webp);background-repeat:repeat;border-radius:22px;grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:40px;padding:28px;scroll-margin-top:96px;display:grid;box-shadow:0 8px #0d331d33,0 18px 34px #051f112e}.home-how-heading{align-self:start;min-width:0;padding:4px 0 0}.home-how-heading .eyebrow{color:var(--game-green);letter-spacing:.08em;margin:0 0 10px;font-size:12px;font-weight:950}.home-how-heading h2{max-width:360px;color:var(--game-green-deep);text-wrap:balance;margin:0;font-size:clamp(30px,3.5vw,46px);line-height:1.06}.home-how-steps{min-width:0}.home-how-step{border-bottom:1px solid var(--game-line);grid-template-columns:42px minmax(0,1fr);align-items:start;gap:16px;min-width:0;padding:18px 0;display:grid}.home-how-step:first-child{padding-top:0}.home-how-step:last-child{border-bottom:0;padding-bottom:0}.home-how-step-number{background:var(--game-mint);width:42px;height:42px;color:var(--game-green-deep);font-family:var(--font-mono);border:1px solid #075d3947;border-radius:12px;place-items:center;font-size:16px;font-weight:950;line-height:1;display:grid}.home-how-step h3{color:var(--game-ink);margin:1px 0 6px;font-size:20px;line-height:1.18}.home-how-step p{color:var(--game-muted);margin:0;font-size:15px;line-height:1.55}.home-page .footer{color:#fff8e8c2;border-top-color:#fff8e83d}.home-page .footer a:hover{color:var(--game-paper)}body[data-home-visual=nocturne] .home-how-panel{background-color:var(--game-paper);background-image:var(--nocturne-texture-paper);background-blend-mode:normal;color:var(--game-ink);background-repeat:repeat}@media (max-width:799px){.home-how-story{margin-top:-10px;margin-bottom:44px}.home-scroll-cue{margin-bottom:14px}.home-how-panel{border-radius:18px;grid-template-columns:minmax(0,1fr);gap:26px;padding:22px 18px;scroll-margin-top:78px}.home-how-heading h2{max-width:520px;font-size:clamp(28px,8.3vw,38px)}.home-how-step{grid-template-columns:40px minmax(0,1fr);gap:13px}.home-how-step-number{width:40px;height:40px}}@media (max-width:430px){.home-how-panel{gap:22px;padding:20px 16px}.home-how-step{padding-block:16px}.home-how-step h3{font-size:18px}.home-how-step p{font-size:14px}}@media (orientation:landscape) and (max-height:500px){.home-how-story{margin-top:10px}}@media (prefers-reduced-motion:reduce){.home-how-panel,.home-how-heading,.home-how-step{opacity:1!important;visibility:visible!important;transform:none!important}}body:has(.content-page){background-color:#28663f;background-image:url(/textures/felt-mobile.webp);background-repeat:repeat;background-size:192px 192px}.content-page{--game-felt:#28663f;--game-paper:#fff8e8;--game-ink:#1f1a12;--game-muted:#655d4e;--game-line:#1f1a123d;--game-green:#087a49;--game-green-deep:#075d39;--game-mint:#dcebd8;--game-gold:#f7b51c;width:100%;min-height:100svh;padding:max(12px, env(safe-area-inset-top)) 12px max(48px, env(safe-area-inset-bottom));color:var(--game-ink);background:0 0;margin:0}.content-page-header{z-index:20;border:1px solid var(--game-line);background-color:var(--game-paper);width:min(1000px,100%);min-height:72px;color:var(--game-ink);background-image:url(/textures/paper-mobile.webp);background-repeat:repeat;border-radius:18px;flex-flow:row;justify-content:space-between;align-items:center;gap:16px;margin:0 auto 16px;padding:12px 18px;display:flex;position:relative;overflow:visible;box-shadow:0 8px #0d331d2e,0 18px 34px #051f1129}.content-page-header .brand{min-width:0;color:var(--game-ink);white-space:nowrap}.content-page-header .brand-mark{background:var(--game-gold);width:40px;height:40px;color:var(--game-ink);border:1px solid #d99808;border-radius:11px;flex:0 0 40px;font-size:24px;font-weight:950;box-shadow:inset 0 -4px #1f1a122e,0 3px #b97704}.content-page-header nav{color:var(--game-muted)}.content-page-header nav a:hover,.content-page .footer a:hover{color:var(--game-green-deep)}.content-page-header .nav-actions{flex-wrap:nowrap;flex:none;min-width:0}.content-page .disclosure-trigger{border-color:var(--game-line);min-width:44px;min-height:44px;color:var(--game-ink);background:#ffffff3d}.content-page .disclosure-panel{border-color:var(--game-line);background-color:var(--game-paper);color:var(--game-ink);background-image:url(/textures/paper-mobile.webp);background-repeat:repeat;box-shadow:0 14px 32px #051f113d}.content-page .language-menu a{color:var(--game-muted)}.content-page .language-menu a.active{background:var(--game-mint);color:var(--game-green-deep)}.content-page .nav-cta,.content-page .button.primary{border-color:var(--game-ink);background:var(--game-gold);color:var(--game-ink);box-shadow:inset 0 -3px #1f1a1229}.content-paper{isolation:isolate;border:1px solid var(--game-line);background-color:var(--game-paper);width:min(1000px,100%);color:var(--game-ink);background-image:url(/textures/paper-mobile.webp);background-repeat:repeat;border-radius:22px;margin:0 auto;padding:clamp(24px,4vw,42px);position:relative;overflow:visible;box-shadow:0 8px #0d331d33,0 18px 34px #051f112e}.content-page .eyebrow{color:var(--game-green)}.content-page h1,.content-page h2,.content-page h3,.content-page .article-cta h2{color:var(--game-ink)}.content-page p,.content-page .article-summary ol,.content-page .article-section .section-heading p,.content-page .site-map-intro,.content-page .footer{color:var(--game-muted)}.article-paper{padding-block:clamp(12px,2vw,24px) 0}.content-page .article-hero{width:100%;min-height:0;padding:clamp(28px,5vw,54px) clamp(12px,2vw,20px)}.content-page .article-section,.content-page .section,.content-page .footer{width:100%;margin:0}.content-page .article-section,.content-page .section{border-top:1px solid var(--game-line);padding:clamp(42px,6vw,64px) clamp(12px,2vw,20px)}.content-page .article-summary,.content-page .feature,.content-page .faq,.content-page .note-band,.content-page .feedback-card,.content-page .site-map-section{color:var(--game-ink);box-shadow:none;background:#fff3;border:1px solid #1f1a122e}.content-page .article-summary{box-shadow:inset 0 0 0 1px #ffffff3d}.content-page .feature,.content-page .faq{border-radius:14px}.content-page .note-band{border-radius:16px}.content-page .footer{border-top-color:var(--game-line);padding:30px 20px 34px}.legal-page:before{content:none}.legal-paper{width:min(820px,100%)}.legal-paper:before{background:linear-gradient(90deg, var(--game-gold) 0 18%, var(--game-green) 18% 100%);content:"";border-radius:999px;width:100%;height:5px;margin-bottom:28px;display:block}.content-page.legal-page h1{color:var(--game-green-deep);font-size:clamp(38px,7vw,66px);line-height:1}.content-page.legal-page h2{color:var(--game-ink)}.content-page.legal-page a{color:var(--game-green-deep)}.content-page.legal-page .button.primary{color:var(--game-ink)}.content-page .legal-topbar{z-index:10;position:relative}.content-page .legal-topbar>a{align-items:center;min-height:44px;display:inline-flex}.site-map-paper{width:min(1000px,100%)}.content-page .site-map-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.content-page .site-map-section a{color:var(--game-green-deep)}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.technique-paper{overflow:hidden}.technique-index-hero,.technique-detail-hero{align-items:start}.technique-card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;display:grid}.technique-topic-map{gap:24px;display:grid}.technique-topic-map-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;display:grid}.technique-topic-map-panel,.technique-learning-order-panel{background:#fff3;border:1px solid #1f1a122e;border-radius:16px;min-width:0;padding:clamp(16px,3vw,24px)}.technique-topic-map-panel h3,.technique-learning-order-panel h3{margin:0 0 14px}.technique-role-list,.technique-engine-priority-list,.technique-learning-order-list,.technique-relation-list{margin:0;padding:0;list-style:none}.technique-role-list{gap:12px;display:grid}.technique-role-list li{grid-template-columns:minmax(0,1fr) auto;gap:4px 12px;display:grid}.technique-role-list p{grid-column:1/-1;margin:0}.technique-engine-priority-list,.technique-learning-order-list{gap:8px;display:grid}.technique-engine-priority-list li,.technique-learning-order-list li{flex-wrap:wrap;align-items:center;gap:6px 10px;min-width:0;display:flex}.technique-engine-priority-list a,.technique-learning-order-list a,.technique-relation-list a{min-width:0;min-height:44px;color:var(--game-green-deep);overflow-wrap:anywhere;text-underline-offset:4px;align-items:center;font-weight:850;text-decoration:underline;text-decoration-thickness:2px;display:inline-flex}.technique-engine-priority-list span,.technique-learning-order-list span,.technique-card-role,.technique-relation-list>li>span{color:var(--game-muted);font-size:14px;font-weight:750}.technique-card-role{margin:0}.technique-topic-meta{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:18px 0 0;display:grid}.technique-topic-meta div{border:1px solid #1f1a1229;border-radius:12px;min-width:0;padding:12px}.technique-topic-meta dt{color:var(--game-muted);font-size:13px;font-weight:800}.technique-topic-meta dd{overflow-wrap:anywhere;margin:4px 0 0;font-weight:850}.technique-relation-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.technique-relation-list li{background:#fff3;border:1px solid #1f1a122e;border-radius:12px;align-content:start;min-width:0;padding:12px 14px;display:grid}.content-page .technique-card{flex-direction:column;align-items:flex-start;gap:12px;min-height:220px;display:flex}.content-page .technique-card h2{font-size:clamp(26px,4vw,38px)}.content-page .technique-card a,.content-page .technique-related-links a{min-height:44px;color:var(--game-green-deep);text-underline-offset:4px;align-items:center;font-weight:850;text-decoration:underline;text-decoration-thickness:2px;display:inline-flex}.content-page .technique-card-coordinate{color:var(--game-green-deep);margin:0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;font-weight:800}.technique-example-grid{grid-template-columns:minmax(260px,.88fr) minmax(0,1.12fr);align-items:start;gap:clamp(24px,4vw,42px);display:grid}.technique-board-wrap{border:2px solid var(--game-ink);background:#ffffff57;border-radius:12px;width:100%;max-width:430px;overflow:hidden;box-shadow:0 5px #1f1a121f;container-type:inline-size}.technique-board{table-layout:fixed;border-collapse:collapse;width:100%;color:var(--game-ink)}.technique-board caption{border-bottom:2px solid var(--game-ink);background:var(--game-mint);color:var(--game-green-deep);text-align:left;padding:12px;font-size:14px;font-weight:900}.technique-board td{text-align:center;vertical-align:middle;border:1px solid #1f1a1259;width:11.111%;padding:0}.technique-cell-content{aspect-ratio:1;justify-content:center;align-items:center;width:100%;display:flex;position:relative}.technique-board tr:nth-child(3n) td{border-bottom-width:2px;border-bottom-color:var(--game-ink)}.technique-board tr:last-child td{border-bottom:0}.technique-board td:nth-child(3n){border-right-width:2px;border-right-color:var(--game-ink)}.technique-board td:last-child{border-right:0}.technique-board td.given strong{font-size:clamp(14px,3.4vw,23px);font-weight:900}.technique-board td.empty{color:var(--game-muted)}.technique-board td.target{background:var(--game-gold);box-shadow:inset 0 0 0 2px var(--game-green-deep)}.technique-board td.pattern{box-shadow:inset 0 0 0 2px var(--game-green-deep);background:#dcebd8eb}.technique-board td.elimination{background:#ffe0b8db}.technique-board td.pattern.elimination{background:linear-gradient(135deg,#dcebd8f5 0 52%,#ffe0b8e6 52% 100%)}.technique-empty-mark{opacity:.4}.technique-cell-candidates{color:var(--game-ink);grid-template-rows:repeat(3,minmax(0,1fr));grid-template-columns:repeat(3,minmax(0,1fr));align-items:center;font-size:clamp(6px,2.1cqw,9px);font-weight:900;line-height:1;display:grid;position:absolute;inset:7%}.technique-cell-candidates .removed{color:#8b2d21;text-decoration:line-through;text-decoration-thickness:2px}.technique-cell-badge{z-index:1;background:var(--game-paper);white-space:nowrap;border:1px solid;border-radius:999px;min-width:0;padding:0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:clamp(6px,2cqw,7px);font-weight:950;line-height:1.1;position:absolute;transform:translate(-50%,-50%)}.pattern-badge{color:var(--game-green-deep)}.deletion-badge{color:#8b2d21}.technique-cell-badge[data-badge-slot="1"],.technique-cell-badge[data-badge-slot="4"],.technique-cell-badge[data-badge-slot="7"]{left:16.667%}.technique-cell-badge[data-badge-slot="2"],.technique-cell-badge[data-badge-slot="5"],.technique-cell-badge[data-badge-slot="8"]{left:50%}.technique-cell-badge[data-badge-slot="3"],.technique-cell-badge[data-badge-slot="6"],.technique-cell-badge[data-badge-slot="9"]{left:83.333%}.technique-cell-badge[data-badge-slot="1"],.technique-cell-badge[data-badge-slot="2"],.technique-cell-badge[data-badge-slot="3"]{top:16.667%}.technique-cell-badge[data-badge-slot="4"],.technique-cell-badge[data-badge-slot="5"],.technique-cell-badge[data-badge-slot="6"]{top:50%}.technique-cell-badge[data-badge-slot="7"],.technique-cell-badge[data-badge-slot="8"],.technique-cell-badge[data-badge-slot="9"]{top:83.333%}.technique-pattern-legend{border-top:2px solid var(--game-ink);color:var(--game-muted);background:#ffffff70;flex-wrap:wrap;gap:7px 12px;margin:0;padding:9px 10px;font-size:11px;font-weight:800;line-height:1.35;list-style:none;display:flex}.technique-pattern-legend li{align-items:center;gap:5px;min-width:0;display:inline-flex}.technique-pattern-key{border:1px solid var(--game-green-deep);background:var(--game-paper);min-width:18px;color:var(--game-green-deep);text-align:center;border-radius:999px;flex:none;padding:1px 3px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:9px;font-weight:950;line-height:1.2}.technique-fact-summary{gap:18px;display:grid}.content-page .technique-fact-sentence{border-left:5px solid var(--game-gold);color:var(--game-ink);background:#dcebd8a8;margin:0;padding:16px 18px;font-weight:800}.technique-fact-summary dl,.technique-audit-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.technique-fact-summary dl div,.technique-audit-list div{background:#ffffff38;border:1px solid #1f1a122e;border-radius:12px;min-width:0;padding:14px}.technique-fact-summary dt,.technique-audit-list dt{color:var(--game-muted);letter-spacing:.04em;text-transform:uppercase;font-size:12px;font-weight:850}.technique-fact-summary dd,.technique-audit-list dd{overflow-wrap:anywhere;color:var(--game-ink);margin:6px 0 0;font-weight:850}.elimination-fact-summary h3{color:var(--game-ink);margin:2px 0 -4px;font-size:18px}.technique-candidate-change-list{gap:10px;margin:0;padding:0;list-style:none;display:grid}.technique-candidate-change-list li{overflow-wrap:anywhere;background:#ffe0b861;border:1px solid #8b2d214d;border-left:5px solid #8b2d21;border-radius:10px;gap:4px;min-width:0;padding:12px 14px;display:grid}.technique-candidate-change-list strong{color:#6f241b}.technique-candidate-change-list span{color:var(--game-muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;line-height:1.5}.technique-step-list{color:var(--game-muted);margin:24px 0 0;padding-left:24px;line-height:1.72}.technique-step-list li+li{margin-top:10px}.technique-practice details{background:#fff3;border:1px solid #1f1a1238;border-radius:14px}.technique-practice summary{min-height:52px;color:var(--game-green-deep);cursor:pointer;align-items:center;padding:14px 18px;font-weight:900;display:flex}.technique-practice details[open] summary{border-bottom:1px solid #1f1a122e}.technique-practice details .technique-example-grid{padding:clamp(16px,3vw,28px)}.technique-gate-note{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:18px;display:flex}.technique-gate-note strong{max-width:720px;color:var(--game-ink)}.technique-related-links{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.technique-related-links a{background:#fff3;border:1px solid #1f1a122e;border-radius:12px;padding:14px 16px}.home-difficulty-method,.home-latest-daily{background:#051f1157;border:1px solid #fff8e847;border-radius:22px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:28px;margin-bottom:72px;padding:clamp(24px,4vw,38px);display:grid}.home-difficulty-method h2,.home-latest-daily h2{max-width:760px;color:var(--game-paper);margin:0 0 12px;font-size:clamp(30px,4.5vw,50px)}.home-difficulty-method p:not(.eyebrow),.home-latest-daily p:not(.eyebrow){color:#dcebd8;max-width:820px;margin:0;line-height:1.7}.home-difficulty-method .button,.home-latest-daily .button{text-align:center;min-height:48px}.difficulty-paper{overflow:hidden}.difficulty-hero{align-items:start}.difficulty-non-claim,.difficulty-sparse-note{border-left:4px solid var(--game-gold);color:var(--game-muted);background:#ffffff52;border-radius:0 12px 12px 0;margin-top:20px;padding:16px 18px;line-height:1.65}.difficulty-technique-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:22px 0 0;padding:0;list-style:none;display:grid}.difficulty-technique-list li{grid-template-columns:34px minmax(0,1fr);align-items:center;gap:10px;min-width:0;display:grid}.difficulty-technique-list span{background:var(--game-green-deep);width:34px;height:34px;color:var(--game-paper);border-radius:50%;place-items:center;font-weight:900;display:grid}.difficulty-technique-list a{min-height:44px;color:var(--game-green-deep);overflow-wrap:anywhere;text-underline-offset:4px;align-items:center;font-weight:850;text-decoration:underline;text-decoration-thickness:2px;display:inline-flex}.difficulty-components code,.difficulty-formula code,.difficulty-version-list code,.difficulty-example-table code{overflow-wrap:anywhere;word-break:break-word}.difficulty-components article>code{color:var(--game-green-deep);background:#0d4a2a14;border-radius:8px;margin-top:12px;padding:7px 10px;font-weight:800;display:inline-block}.difficulty-formula{background:#ffffff47;border:1px solid #1f1a122e;border-radius:16px;margin-top:20px;padding:clamp(20px,4vw,30px)}.difficulty-formula code{color:var(--game-green-deep);font-size:clamp(17px,2.5vw,25px);font-weight:900;display:block}.difficulty-formula p{color:var(--game-muted);margin:14px 0 0;line-height:1.65}.difficulty-table-wrap{border:1px solid #1f1a122e;border-radius:14px;margin-top:18px;overflow-x:auto}.difficulty-table{border-collapse:collapse;background:#ffffff3d;width:100%;min-width:620px}.difficulty-table th,.difficulty-table td{text-align:left;vertical-align:top;border-bottom:1px solid #1f1a1224;padding:14px 16px}.difficulty-table thead th{color:var(--game-green-deep);background:#0d4a2a1a;font-size:14px}.difficulty-table tbody tr:last-child>*{border-bottom:0}.difficulty-example-table{min-width:900px}.difficulty-example-table th:first-child{max-width:280px}.difficulty-clue-note h2{font-size:clamp(28px,4vw,44px)}.difficulty-limit-list{color:var(--game-muted);margin:0;padding-left:24px;line-height:1.7}.difficulty-limit-list li+li{margin-top:10px}.difficulty-version-list{gap:10px;margin:0 0 24px;display:grid}.difficulty-version-list div{border:1px solid #1f1a1224;border-radius:12px;grid-template-columns:minmax(150px,.34fr) minmax(0,1fr);gap:16px;min-width:0;padding:14px 16px;display:grid}.difficulty-version-list dt{color:var(--game-muted);font-weight:800}.difficulty-version-list dd{min-width:0;margin:0}.difficulty-actions .button{min-height:48px}.not-found-paper{align-content:center;justify-items:start;min-height:min(520px,100svh - 72px);display:grid}.settings-panel-heading{min-height:44px}.settings-panel-heading button{width:44px;height:44px}@media (max-width:799px){.content-page-header nav{display:none}.content-page .grid.three{grid-template-columns:minmax(0,1fr)}.content-page .article-hero{grid-template-columns:minmax(0,1fr);gap:28px}.technique-example-grid{grid-template-columns:minmax(0,1fr)}.technique-board-wrap{margin-inline:auto}.home-difficulty-method,.home-latest-daily{grid-template-columns:minmax(0,1fr)}.home-difficulty-method .button,.home-latest-daily .button{width:fit-content}.difficulty-technique-list{grid-template-columns:minmax(0,1fr)}}@media (max-width:560px){.content-page{padding-inline:8px}.content-page-header{border-radius:16px;grid-template-columns:minmax(0,1fr) auto;gap:10px;padding:12px;display:grid}.content-page-header .brand{grid-column:1/-1}.content-page-header .nav-actions{grid-column:1/-1;grid-template-columns:auto minmax(0,1fr);gap:8px;width:100%;display:grid}.content-page-header .nav-actions .language-menu{left:0;right:auto}.content-page-header .nav-cta{text-align:center;justify-content:center;align-items:center;min-height:44px;display:inline-flex}.content-paper{border-radius:18px;padding:20px 16px}.content-page .technique-paper{padding-inline:8px}.article-paper{padding-block:4px 0}.content-page .article-hero,.content-page .article-section,.content-page .section{width:100%;padding-inline:4px}.content-page.technique-detail-page .article-hero,.content-page.technique-detail-page .article-section,.content-page.technique-detail-page .section{padding-inline:0}.content-page .article-actions .button,.content-page .article-cta .button,.content-page .feedback-card .button{width:100%}.content-page .footer{padding-inline:4px}.content-page .legal-topbar{align-items:stretch;gap:10px}.content-page .legal-topbar .language-switcher{align-self:flex-start}.content-page .site-map-grid,.technique-card-grid,.technique-topic-map-grid,.technique-relation-list,.technique-related-links,.technique-fact-summary dl,.technique-audit-list,.technique-topic-meta{grid-template-columns:minmax(0,1fr)}.technique-cell-candidates{font-size:clamp(7px,2.05vw,8px);inset:2px}.technique-cell-badge,.deletion-badge{letter-spacing:-.25px;min-width:0;padding:0 1px;font-size:clamp(6px,1.8vw,7px);line-height:1.05}.pattern-badge{letter-spacing:-.2px;min-width:0;padding:0 1px}.technique-pattern-legend{gap:5px 9px;padding:7px 8px;font-size:10px}.technique-pattern-key{min-width:16px;padding-inline:2px;font-size:8px}.technique-practice details .technique-example-grid{padding:10px 0 12px}.home-difficulty-method,.home-latest-daily{padding:22px 18px}.home-difficulty-method .button,.home-latest-daily .button,.difficulty-actions .button{width:100%}.difficulty-version-list div{grid-template-columns:minmax(0,1fr);gap:6px}}@media (max-width:479px) and (orientation:portrait){.home-page .number-strip{border:0;border-radius:0;grid-template-columns:repeat(3,minmax(44px,1fr));gap:8px;margin-inline:20px;overflow:visible}.home-page .number-strip button,.home-page .number-strip button:last-child,.home-page .number-pad button{border:1px solid var(--game-line);border-radius:9px;min-width:44px;min-height:48px;font-size:21px}}@media (orientation:landscape) and (max-width:719px) and (max-height:500px){.home-page .number-strip{border:0;border-radius:0;grid-template-columns:repeat(3,minmax(44px,1fr));gap:6px;overflow:visible}.home-page .number-strip button,.home-page .number-strip button:last-child,.home-page .number-pad button{border:1px solid var(--game-line);border-radius:8px;min-width:44px;min-height:44px;font-size:18px}}@media (orientation:landscape) and (min-width:720px) and (max-width:949px) and (max-height:500px){.home-page .game-controls{grid-template-columns:minmax(0, var(--landscape-board-size)) minmax(400px, 1fr)}}.home-difficulty-links .section-heading{max-width:760px}.home-tier-link-grid,.playable-tier-links,.playable-learning-links{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;display:grid}.home-tier-link-grid a,.playable-tier-links a,.playable-learning-links a{border:1px solid var(--line);min-height:48px;color:var(--ink);text-align:center;background:#ffffff75;border-radius:12px;justify-content:center;align-items:center;padding:12px 16px;font-weight:800;text-decoration:none;display:inline-flex}.home-tier-link-grid a:hover,.playable-tier-links a:hover,.playable-learning-links a:hover,.playable-tier-links a.active{border-color:var(--accent);background:var(--mint)}.playable-difficulty-paper{padding-top:24px}.playable-breadcrumb{padding:0 48px 18px}.playable-breadcrumb ol{flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0;list-style:none;display:flex}.playable-breadcrumb li+li:before{content:"›";color:var(--muted);margin-right:8px}.playable-breadcrumb a{color:var(--accent);font-weight:800}.playable-difficulty-hero{padding:0 48px 28px}.playable-difficulty-hero h1{max-width:900px;margin:0}.playable-difficulty-hero .hero-text{max-width:780px;margin-top:16px}.playable-game-stage{width:min(1000px,100% - 32px);margin:0 auto;scroll-margin-top:24px}.playable-game-frame{padding-bottom:42px}.playable-game-frame .game-title-block h2{color:var(--game-green-deep);margin:0;font-size:clamp(22px,3vw,30px)}.puzzle-facts{z-index:1;color:var(--game-ink);background:#fffbefe0;border:1px solid #24442f33;border-radius:16px;margin:0 32px;padding:24px;position:relative}.puzzle-facts-heading h2{margin:0;font-size:clamp(22px,3vw,28px)}.puzzle-facts-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:20px 0 0;display:grid}.puzzle-facts-grid div{background:#ffffff94;border-radius:12px;min-width:0;padding:14px}.puzzle-facts-grid dt{color:var(--muted);font-size:13px;font-weight:800}.puzzle-facts-grid dd{margin:6px 0 0;font-weight:900}.puzzle-facts-grid code,.puzzle-facts-grid abbr{overflow-wrap:anywhere}.puzzle-facts-note{margin:18px 0 0}.daily-paper{gap:clamp(1.25rem,3vw,2rem);display:grid}.daily-date-list{gap:.75rem;margin:0;padding:0;list-style:none;display:grid}.daily-primary-actions{flex-wrap:wrap;align-items:center;gap:.75rem;margin:0;display:flex}.daily-date-list li{border:1px solid var(--line);border-radius:1rem;justify-content:space-between;align-items:center;gap:1rem;padding:1rem;display:flex}.daily-date-list li div{gap:.25rem;display:grid}.daily-date-list li span{color:var(--muted);font-size:.875rem}.daily-puzzle-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;display:grid}.daily-puzzle-card{border:1px solid var(--line);border-radius:1.25rem;gap:1rem;min-width:0;padding:clamp(.85rem,2vw,1.25rem);display:grid}.daily-puzzle-card h3{margin:0}.daily-static-board{aspect-ratio:1;border:2px solid var(--ink);border-collapse:collapse;table-layout:fixed;width:100%}.daily-static-board td{border:1px solid var(--line);color:var(--ink);text-align:center;width:11.111%;height:11.111%;padding:0;font-size:clamp(.7rem,2vw,1rem)}.daily-static-board tr:nth-child(3n) td{border-bottom-color:var(--ink);border-bottom-width:2px}.daily-static-board td:nth-child(3n){border-right-color:var(--ink);border-right-width:2px}.daily-facts{gap:.5rem;margin:0;display:grid}.daily-facts div{grid-template-columns:minmax(7rem,.8fr) minmax(0,1.2fr);align-items:baseline;gap:.5rem;display:grid}.daily-facts dt{color:var(--muted);letter-spacing:.04em;text-transform:uppercase;font-size:.78rem;font-weight:700}.daily-facts dd{min-width:0;margin:0}.daily-facts code{overflow-wrap:anywhere}.daily-key-step{border-top:1px solid var(--line);margin:0;padding-top:.85rem}.daily-card-links{flex-wrap:wrap;gap:.6rem;display:flex}.daily-card-links a{border:1px solid var(--line);border-radius:.75rem;align-items:center;min-height:44px;padding:.65rem .8rem;font-weight:800;display:inline-flex}.daily-date-navigation{text-align:center;grid-template-columns:repeat(3,minmax(0,1fr));align-items:center;gap:.75rem;display:grid}.daily-date-navigation>:first-child{text-align:left}.daily-date-navigation>:last-child{text-align:right}@media (max-width:799px){.daily-puzzle-grid{grid-template-columns:1fr}.daily-date-list li{flex-direction:column;align-items:flex-start}.daily-date-navigation{text-align:left;grid-template-columns:1fr}.daily-date-navigation>:last-child{text-align:left}}.playable-tier-section{width:auto;color:var(--game-ink);background:#fffbefb8;border:1px solid #24442f33;border-radius:16px;margin:24px 32px 0;padding:24px}.playable-tier-section h2{margin:0 0 18px;font-size:clamp(22px,3vw,28px);line-height:1.15}.playable-tier-section,.playable-method-section,.playable-learning-section{scroll-margin-top:24px}.playable-method-section{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:24px;display:grid}.playable-method-section h2,.playable-learning-section h2{margin-top:0}.playable-learning-links{grid-template-columns:repeat(3,minmax(0,1fr))}@media (max-width:799px){.home-tier-link-grid,.playable-tier-links{grid-template-columns:repeat(2,minmax(0,1fr))}.playable-learning-links{grid-template-columns:minmax(0,1fr)}.playable-difficulty-paper{padding-top:18px}.playable-breadcrumb,.playable-difficulty-hero{padding-left:20px;padding-right:20px}.playable-difficulty-hero{padding-bottom:20px}.playable-game-stage{width:calc(100% - 8px)}.playable-game-frame{padding-bottom:32px}.puzzle-facts{margin:0 16px;padding:18px}.playable-tier-section{margin:20px 16px 0;padding:18px}.puzzle-facts-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.playable-method-section{grid-template-columns:minmax(0,1fr)}.playable-method-section .button{width:100%;min-height:48px}}@media (max-width:479px){.playable-tier-links,.puzzle-facts-grid{grid-template-columns:minmax(0,1fr)}}.printable-paper{gap:2rem;display:grid}.printable-hero{gap:.9rem;display:grid}.printable-actions{flex-wrap:wrap;gap:.75rem;display:flex}.printable-actions .button{min-height:44px}.printable-latest{gap:1.5rem;display:grid}.print-sheet{border:1px solid var(--game-line);border-radius:18px;gap:1rem;padding:clamp(1rem,3vw,2rem);display:grid}.print-sheet-header,.print-sheet-footer{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem 1rem;display:flex}.print-sheet-footer{color:var(--game-muted);overflow-wrap:anywhere;font-size:.72rem}.print-sheet-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(1rem,3vw,2rem);display:grid}.printable-puzzle{min-width:0}.printable-puzzle h3,.printable-puzzle p{margin:0 0 .4rem}.printable-puzzle p{color:var(--game-muted);overflow-wrap:anywhere;font-size:.68rem}.printable-grid{border-collapse:collapse;color:var(--game-ink);table-layout:fixed;width:100%}.printable-grid td{font-variant-numeric:tabular-nums;text-align:center;border:1px solid;width:11.111%;height:clamp(1.65rem,5vw,2.4rem);padding:0;font-size:clamp(.85rem,2.5vw,1.25rem)}.printable-grid tr:nth-child(3n) td{border-bottom-width:3px}.printable-grid tr:first-child td{border-top-width:3px}.printable-grid td:nth-child(3n){border-right-width:3px}.printable-grid td:first-child{border-left-width:3px}.printable-given{font-weight:800}.printable-grid-answer td:not(.printable-given){font-weight:400}.printable-archive ul{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:.5rem;margin:0;padding:0;list-style:none;display:grid}.printable-archive a{border:1px solid var(--game-line);border-radius:12px;align-items:center;min-height:44px;padding:.65rem .8rem;display:flex}@media (max-width:640px){.print-sheet-grid{grid-template-columns:1fr}}@page{margin:.4in;size:auto}@media print{:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}body,.content-page,.content-paper,.printable-paper,.printable-latest{color:#000!important;background:#fff!important;max-width:none!important;margin:0!important;padding:0!important}.printable-screen-only{display:none!important}.print-sheet{break-after:page;box-sizing:border-box;color:#000;page-break-after:always;border:0;border-radius:0;gap:.18in;height:9.7in;padding:0;display:grid}.print-sheet:last-child{break-after:auto;page-break-after:auto}.print-sheet-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:.32in}.printable-grid,.printable-grid td{color:#000}.printable-grid td{height:.32in;font-size:14pt}.print-sheet-footer,.printable-puzzle p{color:#333}}@media (max-width:495px) and (orientation:portrait){.playable-difficulty-page .number-strip,.daily-page .number-strip{border:0;border-radius:0;grid-template-columns:repeat(3,minmax(44px,1fr));gap:8px;margin-inline:20px;overflow:visible}.playable-difficulty-page .number-strip button,.playable-difficulty-page .number-strip button:last-child,.daily-page .number-strip button,.daily-page .number-strip button:last-child{border:1px solid var(--game-line);border-radius:9px;min-width:44px;min-height:48px;font-size:21px}}.solver-paper{padding:0;overflow:hidden}.content-page .solver-hero{padding-block:clamp(36px,6vw,68px)}.solver-hero h1{max-width:820px;font-size:clamp(38px,6vw,68px);line-height:.98}.solver-hero>p:last-child{max-width:760px;font-size:clamp(1rem,2vw,1.18rem);line-height:1.65}.solver-workspace{border-top:1px solid var(--game-line);grid-template-columns:minmax(0,1.08fr) minmax(280px,.92fr);gap:clamp(18px,3vw,30px);padding:clamp(24px,4vw,42px) clamp(12px,2vw,20px);display:grid}.solver-input-panel,.solver-result-panel{background:#ffffff3d;border:1px solid #1f1a1233;border-radius:16px;min-width:0;padding:clamp(16px,3vw,26px)}.solver-panel-heading{gap:10px;margin-bottom:18px;display:grid}.solver-panel-heading h2,.solver-result-panel h2{margin-bottom:8px}.content-page .solver-edit-note{margin:0;font-size:.84rem}.solver-board{aspect-ratio:1;border:3px solid var(--game-ink);background:#fffdf7;border-radius:8px;grid-template-columns:repeat(9,minmax(0,1fr));width:min(100%,560px);margin-inline:auto;display:grid;overflow:hidden}.solver-cell{width:100%;min-width:0;height:100%;min-height:0;color:var(--game-ink);font-family:var(--font-display);text-align:center;caret-color:var(--game-green);background:0 0;border:1px solid #1f1a1240;border-top:0;border-left:0;border-radius:0;padding:0;font-size:clamp(1rem,4vw,1.75rem);font-weight:850;line-height:1}.solver-cell:nth-child(9n){border-right:0}.solver-cell:nth-last-child(-n+9){border-bottom:0}.solver-cell.solver-box-right{border-right:3px solid var(--game-ink)}.solver-cell.solver-box-bottom{border-bottom:3px solid var(--game-ink)}.solver-cell:hover:not(:read-only),.solver-cell:focus{background:var(--game-mint)}.solver-cell-conflict{color:#8f1f19;background:#bf392f33}.solver-cell-pattern{background:#f7b51c3d}.solver-cell-change{color:var(--game-green-deep);background:#087a4933}.solver-actions,.solver-step-controls{flex-wrap:wrap;gap:10px;margin-top:18px;display:flex}.content-page .solver-actions .button,.content-page .solver-step-controls .button,.content-page .solver-privacy .button{min-height:46px}.content-page .button.secondary{border-color:var(--game-line);color:var(--game-ink);background:#ffffff52}.content-page button:disabled{cursor:not-allowed;opacity:.48}.solver-result-panel{align-self:start;min-height:240px}.content-page .solver-status{border-left:4px solid var(--game-gold);color:var(--game-ink);background:#f7b51c1f;border-radius:8px;margin:12px 0 0;padding:14px 16px;line-height:1.55}.content-page .solver-status.success{border-left-color:var(--game-green);background:#087a491a}.solver-step{border-top:1px solid var(--game-line);margin-top:18px;padding-top:18px}.solver-step h3{margin-bottom:10px}.solver-step a,.solver-technique-list a{color:var(--game-green-deep);text-underline-offset:3px;font-weight:850;text-decoration:underline;text-decoration-thickness:1px}.solver-step ul,.solver-method ul{gap:8px;padding-left:1.25rem;line-height:1.55;display:grid}.solver-noscript{border-top:1px solid var(--game-line);color:var(--coral);margin:0;padding:18px clamp(12px,2vw,20px);font-weight:700}.solver-method,.solver-privacy{grid-template-columns:minmax(0,1fr) minmax(280px,.8fr);align-items:start;gap:clamp(22px,4vw,42px);display:grid}.solver-privacy{align-items:center}.solver-privacy .button{justify-self:end}.solver-technique-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding:0;list-style:none;display:grid}.solver-technique-list a{border:1px solid var(--game-line);background:#ffffff3d;border-radius:10px;align-items:center;min-height:46px;padding:10px 12px;text-decoration:none;display:flex}@media (max-width:799px){.solver-workspace,.solver-method,.solver-privacy{grid-template-columns:minmax(0,1fr)}.solver-result-panel{min-height:0}.solver-privacy .button{justify-self:start}}@media (max-width:479px){.solver-workspace{padding-inline:8px}.solver-input-panel,.solver-result-panel{padding:12px}.solver-technique-list{grid-template-columns:minmax(0,1fr)}.solver-actions .button,.solver-step-controls .button{flex:100%}}
