:root{--color-background: #f8fafc;--color-surface: #ffffff;--color-text: #111827;--color-muted: #6b7280;--color-border: #e5e7eb;--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-answer-bg: #ecfdf5;--color-answer-border: #10b981;--color-answer-text: #065f46;--color-hint-bg: #fffbeb;--color-hint-border: #f59e0b;--color-hint-text: #92400e;--color-error: #dc2626;--content-width: 1120px;--article-width: 760px;--sidebar-width: 300px;--radius: 8px}*{box-sizing:border-box}html{background:var(--color-background);color:var(--color-text);font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:16px;line-height:1.5}body{margin:0;min-width:320px}a{color:var(--color-primary);text-decoration:none}a:hover{color:var(--color-primary-hover);text-decoration:underline}button,input,select,textarea{font:inherit}img{display:block;max-width:100%}.site-shell{min-height:100vh;display:flex;flex-direction:column}.site-main{flex:1}.container{width:min(100% - 32px,var(--content-width));margin:0 auto}.article-container{width:min(100% - 32px,var(--article-width));margin:0 auto}.section{padding:32px 0}.section--tight{padding:20px 0}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}.section-heading h2{margin:0;font-size:clamp(1.25rem,1.1rem + .4vw,1.5rem)}.section-heading p{margin:4px 0 0;color:var(--color-muted)}.page-heading{padding:28px 0 20px}.page-heading h1{margin:0;font-size:clamp(1.75rem,1.45rem + 1vw,2.5rem);line-height:1.15}.page-heading p{max-width:720px;margin:10px 0 0;color:var(--color-muted)}.site-header{background:var(--color-surface);border-bottom:1px solid var(--color-border)}.header-inner{min-height:68px;display:grid;grid-template-columns:auto minmax(220px,1fr) auto;align-items:center;gap:20px}.header-inner--simple{grid-template-columns:auto auto;justify-content:space-between}.brand{color:var(--color-text);font-weight:800;white-space:nowrap}.brand:hover{color:var(--color-text);text-decoration:none}.nav-links{display:flex;align-items:center;gap:14px}.nav-links a{color:var(--color-text);font-weight:600}.search-box{display:flex;width:100%;gap:10px}.search-box input{width:100%;min-height:46px;border:1px solid var(--color-border);border-radius:var(--radius);padding:0 14px;background:var(--color-surface);color:var(--color-text)}.search-box button,.button{min-height:46px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--color-primary);border-radius:var(--radius);padding:0 16px;background:var(--color-primary);color:#fff;font-weight:700;cursor:pointer}.search-box button:hover,.button:hover{background:var(--color-primary-hover);color:#fff;text-decoration:none}.button--secondary{background:var(--color-surface);color:var(--color-primary)}.button--secondary:hover{color:#fff}.hero-search{background:var(--color-surface);border-bottom:1px solid var(--color-border);padding:36px 0}.hero-search h1{max-width:760px;margin:0 0 18px;font-size:clamp(2rem,1.65rem + 1.3vw,3rem);line-height:1.12}.hero-search p{max-width:720px;margin:0 0 22px;color:var(--color-muted)}.home-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;max-width:720px;margin:18px 0 0}.home-stats div{border:1px solid var(--color-border);border-radius:var(--radius);padding:12px 14px;background:#f8fafc}.home-stats dt{margin:0;color:var(--color-text);font-size:1.25rem;font-weight:800}.home-stats dd{margin:2px 0 0;color:var(--color-muted);font-size:.9rem}.grid{display:grid;gap:16px}.grid--cards{grid-template-columns:repeat(3,minmax(0,1fr))}.grid--two{grid-template-columns:repeat(2,minmax(0,1fr))}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:18px}.game-card{display:grid;grid-template-columns:44px 1fr;gap:14px;color:var(--color-text)}.game-card:hover{border-color:var(--color-primary);text-decoration:none}.game-card__icon{width:44px;height:44px;display:grid;place-items:center;border-radius:var(--radius);background:#dbeafe;color:#1e40af;font-weight:800}.game-card h3{margin:0;font-size:1.05rem}.game-card p{margin:6px 0 12px;color:var(--color-muted)}.meta-list{display:flex;flex-wrap:wrap;gap:8px 12px;margin:0;padding:0;color:var(--color-muted);font-size:.9rem;list-style:none}.pill-list{display:flex;flex-wrap:wrap;gap:10px;margin:0;padding:0;list-style:none}.pill-list a,.level-link{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--color-border);border-radius:var(--radius);padding:0 14px;background:var(--color-surface);color:var(--color-text);font-weight:700}.pill-list a:hover,.level-link:hover{border-color:var(--color-primary);color:var(--color-primary);text-decoration:none}.level-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(92px,1fr));gap:10px}.package-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}.quick-start-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.quick-start-card{min-height:150px;display:grid;align-content:start;gap:8px;border:1px solid var(--color-border);border-radius:var(--radius);padding:18px;background:var(--color-surface);color:var(--color-text)}.quick-start-card:hover{border-color:var(--color-primary);color:var(--color-text);text-decoration:none}.quick-start-card strong{font-size:1.05rem}.quick-start-card span{color:var(--color-muted)}.quick-start-card em{margin-top:auto;color:var(--color-primary);font-style:normal;font-weight:800}.package-card{color:var(--color-text)}.package-card:hover{border-color:var(--color-primary);text-decoration:none}.package-card h3{margin:0 0 8px;font-size:1.08rem}.package-card p{margin:0 0 12px;color:var(--color-muted)}.breadcrumb{margin:18px 0 0;color:var(--color-muted);font-size:.92rem}.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}.breadcrumb li:not(:last-child):after{content:">";margin-left:8px;color:var(--color-muted)}.content-layout{display:grid;grid-template-columns:minmax(0,var(--article-width)) var(--sidebar-width);align-items:start;gap:24px}.article-stack{display:grid;gap:18px}.answer-block,.hint-block{border-radius:var(--radius);padding:18px}.answer-block{border:1px solid var(--color-answer-border);background:var(--color-answer-bg);color:var(--color-answer-text)}.hint-block{border:1px solid var(--color-hint-border);background:var(--color-hint-bg);color:var(--color-hint-text)}.answer-block h2,.hint-block h2,.card h2{margin:0 0 10px;font-size:1.2rem}.answer-list{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}.answer-list li{border-radius:999px;padding:7px 11px;background:#fff;font-weight:800}.puzzle-solution{overflow:hidden}.puzzle-board-wrap{overflow-x:auto;margin:8px 0 16px;padding:16px;border:1px solid var(--color-border);border-radius:var(--radius);background:linear-gradient(180deg,#fff,#f8fafc)}.triangle-board{display:block;max-width:100%;height:auto;margin:0 auto}.puzzle-meta-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.puzzle-meta-row span,.piece-chip{display:inline-flex;align-items:center;min-height:30px;border:1px solid var(--color-border);border-radius:var(--radius);padding:4px 9px;background:#f8fafc;color:var(--color-muted);font-size:.86rem;font-weight:650}.puzzle-subsection+.puzzle-subsection{margin-top:16px}.puzzle-subsection h3{margin:0 0 10px;font-size:1rem}.piece-key{display:flex;flex-wrap:wrap;gap:8px}.piece-chip--fake{border-color:#fecaca;background:#fef2f2;color:#991b1b}.piece-swatch{width:14px;height:14px;flex:0 0 14px;margin-right:7px;border:1px solid rgba(17,24,39,.18);border-radius:3px}.placement-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:8px;margin:0;padding:0;list-style:none}.placement-steps li{min-height:42px;display:flex;align-items:center;border:1px solid var(--color-border);border-radius:var(--radius);padding:8px 10px;background:var(--color-surface);font-weight:750}.placement-steps small{margin-left:auto;color:var(--color-muted);font-size:.8rem;font-weight:600}.placement-steps__fake{border-color:#fecaca;background:#fff7f7;color:#991b1b}.associations-solution{display:grid;gap:18px}.associations-summary p,.associations-layout p{margin:0 0 14px;color:var(--color-muted)}.associations-groups{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}.association-group{border:1px solid var(--color-answer-border);border-radius:var(--radius);padding:14px;background:var(--color-answer-bg);color:var(--color-answer-text)}.association-group h3,.association-column h3,.association-stock h3{margin:0 0 10px;font-size:1rem;line-height:1.25;overflow-wrap:anywhere}.association-group ul,.association-stock ul{display:flex;flex-wrap:wrap;gap:7px;margin:0;padding:0;list-style:none}.association-group li,.association-stock li{max-width:100%;border-radius:var(--radius);padding:6px 8px;background:#fff;font-weight:700;overflow-wrap:anywhere}.association-columns{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-top:12px}.association-column{border:1px solid var(--color-border);border-radius:var(--radius);padding:12px;background:#f8fafc}.association-column ol{display:grid;gap:6px;margin:0;padding-left:20px}.association-column li{padding:5px 7px;border-radius:6px;background:var(--color-surface);color:var(--color-text);font-weight:650;overflow-wrap:anywhere}.association-stock{margin-top:16px}.color-slide-solution{display:grid;gap:16px}.color-slide-summary h2,.color-slide-board-card h2,.color-slide-details h2{margin-top:0}.color-slide-board-card{overflow:hidden}.color-slide-legend{display:flex;flex-wrap:wrap;gap:10px 14px;margin-bottom:14px;color:var(--color-muted);font-size:.86rem}.color-slide-legend span{display:inline-flex;align-items:center;gap:6px}.color-slide-swatch{width:14px;height:14px;display:inline-block;border:1px solid var(--color-border);border-radius:999px}.color-slide-board-wrap{overflow:auto;border:1px solid #cbd5e1;border-radius:var(--radius);padding:14px;background:linear-gradient(180deg,#ffffffeb,#f1f5f9eb),repeating-linear-gradient(45deg,#e2e8f0 0 8px,#f8fafc 8px 16px)}.color-slide-board{display:block;width:100%;min-width:360px;height:auto}.color-slide-stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}.color-slide-stat-grid span{display:flex;justify-content:space-between;gap:10px;border:1px solid var(--color-border);border-radius:var(--radius);padding:10px 12px;background:#f8fafc;color:var(--color-muted)}.color-slide-stat-grid strong{color:var(--color-text)}.color-slide-type-summary{margin:14px 0 0;color:var(--color-muted);overflow-wrap:anywhere}.color-slide-notes{display:grid;gap:7px;margin:0;padding-left:20px;color:var(--color-muted)}.hint-block ol{margin:0;padding-left:22px}.hint-block li+li{margin-top:8px}.guide-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.guide-nav a{min-height:54px;display:flex;align-items:center;border:1px solid var(--color-border);border-radius:var(--radius);padding:12px;background:var(--color-surface);color:var(--color-text);font-weight:700}.guide-nav a:last-child{justify-content:end}.guide-nav a:hover{border-color:var(--color-primary);color:var(--color-primary);text-decoration:none}.ad-slot{min-height:250px;display:grid;place-items:center;border:1px dashed var(--color-border);border-radius:var(--radius);color:var(--color-muted);background:var(--color-surface);font-size:.9rem}.site-footer{margin-top:40px;border-top:1px solid var(--color-border);background:var(--color-surface);color:var(--color-muted)}.footer-inner{display:grid;grid-template-columns:1fr auto;align-items:center;gap:20px;padding:24px 0}.footer-links{display:flex;flex-wrap:wrap;gap:14px}.form-row{display:grid;grid-template-columns:minmax(180px,1fr) minmax(180px,1fr) auto;gap:10px}.form-row--two{grid-template-columns:repeat(2,minmax(0,1fr))}.form-stack{display:grid;gap:16px}.form-stack label{display:grid;gap:7px;color:var(--color-text);font-weight:700}.form-row input,.form-row select,.form-stack select,.text-field,.textarea-field{min-height:46px;border:1px solid var(--color-border);border-radius:var(--radius);padding:0 14px;background:var(--color-surface)}.textarea-field{min-height:140px;padding:12px 14px;resize:vertical}.notice,.form-status{margin:0;color:var(--color-muted)}.pagefind-search{max-width:760px}.search-results{display:grid;gap:12px}.search-result{display:grid;gap:6px;color:var(--color-text)}.search-result:hover{border-color:var(--color-primary);text-decoration:none}.search-result p{margin:0;color:var(--color-muted)}.search-result mark{border-radius:4px;padding:0 2px;background:var(--color-hint-bg);color:var(--color-text)}.prose{color:var(--color-text)}.prose h2{margin:28px 0 10px;font-size:1.35rem}.prose p,.prose li{color:var(--color-muted)}@media(max-width:860px){.header-inner{grid-template-columns:1fr;gap:12px;padding:14px 0}.header-inner--simple{grid-template-columns:1fr;justify-content:stretch}.nav-links{justify-content:space-between}.grid--cards,.grid--two,.home-stats,.quick-start-grid,.content-layout,.guide-nav,.footer-inner,.form-row{grid-template-columns:1fr}.section{padding:24px 0}.hero-search{padding:28px 0}.section-heading{align-items:start;flex-direction:column}.guide-nav a:last-child{justify-content:start}}