:root{--bg: #f7f8fc;--surface: #ffffff;--surface-soft: #f1f3fb;--text: #182235;--muted: #697386;--border: #e5e8f0;--border-soft: #eceef4;--header: rgba(247,248,252,.92);--accent: #6658d9;--accent-soft: #eeecff;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--text);background:var(--bg);font-synthesis:none;color-scheme:light}:root[data-theme=dark]{--bg: #111522;--surface: #1b2131;--surface-soft: #171c2a;--text: #edf0fa;--muted: #aab2c5;--border: #30384d;--border-soft: #2a3143;--header: rgba(17,21,34,.92);--accent: #9b91ff;--accent-soft: #29264d;color-scheme:dark}*{box-sizing:border-box}body{margin:0;line-height:1.6;background:var(--bg);color:var(--text);transition:background .2s ease,color .2s ease}a{color:inherit;text-decoration:none}.container{width:min(1120px,calc(100% - 40px));margin-inline:auto}.site-header{background:var(--header);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}.nav-wrap,.footer-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}.brand{font-weight:800;letter-spacing:-.04em;font-size:1.25rem}.brand span{color:#6658d9}.header-controls{display:flex;align-items:center;gap:24px}.desktop-nav{display:flex;align-items:center;gap:24px;color:var(--muted);font-size:.95rem}.desktop-nav a:hover,.mobile-nav a:hover,.footer-links a:hover{color:var(--accent)}.mobile-nav{display:none}.nav-cta{color:#fff;background:#6658d9;padding:9px 16px;border-radius:999px;font-weight:700}.nav-cta:hover{color:#fff;background:#5145c4}.site-footer{margin-top:80px;border-top:1px solid var(--border);color:var(--muted);font-size:.9rem}.site-footer p{margin:4px 0 0}.footer-links{display:flex;flex-wrap:wrap;gap:18px}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--text);line-height:1.15;letter-spacing:-.04em}h1{font-size:clamp(2.4rem,5vw,4.7rem);max-width:740px}h2{font-size:2rem}.eyebrow{color:var(--accent);font-weight:800;letter-spacing:.08em;text-transform:uppercase;font-size:.78rem}.muted{color:var(--muted)}.button{display:inline-flex;align-items:center;justify-content:center;border-radius:10px;padding:12px 18px;background:#6658d9;color:#fff;font-weight:750}.button.secondary{background:var(--surface);color:var(--accent);border:1px solid var(--border)}.theme-toggle{display:inline-grid;place-items:center;width:36px;height:36px;border:1px solid var(--border);border-radius:50%;background:var(--surface);color:var(--text);cursor:pointer;font-size:1rem}.theme-toggle:hover{border-color:var(--accent);color:var(--accent)}.menu-toggle{display:none;place-items:center;width:40px;height:36px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text);cursor:pointer;font-size:1.3rem;line-height:1}.menu-toggle:hover{border-color:var(--accent);color:var(--accent)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.search-link{display:inline-flex;align-items:center;gap:6px}.search-link span:first-child{font-size:1.45rem;line-height:1}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{display:block;background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:24px;box-shadow:0 8px 24px #1f29460a}.card:hover{transform:translateY(-2px);box-shadow:0 12px 28px #1f294617;transition:.2s ease}.tag{display:inline-flex;border-radius:999px;padding:4px 10px;background:var(--accent-soft);color:var(--accent);font-size:.75rem;font-weight:750}.term-word{font-size:2rem;font-weight:850;letter-spacing:-.04em;margin:18px 0 5px}.hero{padding:92px 0 72px;background:radial-gradient(circle at 80% 10%,#e9e7ff 0,transparent 34%),linear-gradient(180deg,var(--bg) 0%,var(--surface-soft) 100%)}:root[data-theme=dark] .hero{background:radial-gradient(circle at 80% 10%,#29264d 0,transparent 34%),linear-gradient(180deg,var(--bg) 0%,var(--surface-soft) 100%)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(360px,.9fr);align-items:center;gap:30px}.hero-copy{position:relative;z-index:1}.hero-visual{display:flex;justify-content:center;align-items:center;min-height:470px}.hero-visual img{display:block;width:min(100%,500px);height:auto}.hero p{font-size:1.2rem;color:var(--muted);max-width:610px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.search-box{margin-top:38px;display:flex;gap:10px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:8px;width:min(650px,100%);box-shadow:0 12px 35px #242a5014}.search-box input{flex:1;border:0;outline:0;padding:10px 12px;font:inherit;min-width:0;background:transparent;color:var(--text)}.section{padding:70px 0 0}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}.section-heading h2{margin-bottom:0}.section-heading a{color:#6658d9;font-weight:750}.category-card h3{margin:16px 0 7px;font-size:1.2rem}.term-page{padding:70px 0}.term-layout{display:grid;grid-template-columns:1.5fr 1fr;gap:28px}.term-main,.term-aside{background:var(--surface);border:1px solid var(--border);border-radius:22px;padding:32px}.term-main h1{font-size:clamp(3rem,7vw,5.6rem);margin:12px 0 6px}.definition{background:var(--accent-soft);border-left:4px solid var(--accent);padding:18px 20px;border-radius:0 12px 12px 0;margin:26px 0}.example{background:var(--surface-soft);padding:18px 20px;border-radius:12px;font-style:italic}.info-row{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid var(--border-soft);padding:12px 0}.quiz-card{max-width:760px}.quiz-progress{display:flex;justify-content:space-between;gap:16px;color:var(--muted);font-size:.9rem;margin-bottom:22px}.quiz-options{display:grid;gap:10px;margin-top:24px}.quiz-option{width:100%;text-align:left;cursor:pointer;font:inherit}.quiz-option.correct{background:#d9f6e5;color:#146b3a;border-color:#63c78c}.quiz-option.wrong{background:#ffe0e0;color:#9c2929;border-color:#e58a8a}:root[data-theme=dark] .quiz-option.correct{background:#173d2a;color:#91e6af;border-color:#3c9e67}:root[data-theme=dark] .quiz-option.wrong{background:#482326;color:#faa;border-color:#a9555d}.quiz-feedback{min-height:28px;margin:18px 0 0;font-weight:700}.quiz-next{margin-top:18px}.info-row:last-child{border-bottom:0}.sidebar-search{margin-top:24px;padding-top:20px;border-top:1px solid var(--border-soft)}.sidebar-search label{display:block;font-weight:750;font-size:.9rem;margin-bottom:8px}.sidebar-search .search-box{width:100%;margin-top:0;padding:5px}.sidebar-search .search-box input{width:100%;padding:8px;font-size:.9rem}.sidebar-search .search-box .button{padding:9px 11px;font-size:.9rem}.breadcrumbs{color:var(--muted);font-size:.88rem;margin-bottom:22px}.breadcrumbs a:hover{color:var(--accent)}.related-section{padding-top:0}.related-section h2{margin-bottom:20px}.term-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.search-page{max-width:850px}.search-page .search-box{width:100%;margin:28px 0 34px}.search-suggestions{margin-top:34px}.search-suggestion-list{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}.search-suggestion{display:flex;flex-direction:column;gap:4px;min-width:140px;padding:14px 16px;background:var(--surface);border:1px solid 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h2{display:flex;align-items:center;gap:14px;margin-bottom:18px}.lexicon-group h2:after{content:"";height:1px;flex:1;background:var(--border)}.mobile-nav[hidden]{display:none}@media(max-width:760px){.nav-wrap{min-height:64px;padding:12px 0;gap:0;flex-wrap:wrap}.header-controls{gap:8px}.desktop-nav{display:none}.menu-toggle{display:inline-grid}.mobile-nav{display:grid;flex-basis:100%;width:100%;gap:4px;padding:14px 0 4px;margin-top:12px;border-top:1px solid var(--border);color:var(--muted);font-size:.98rem}.mobile-nav a{padding:11px 10px;border-radius:10px}.mobile-nav a:hover{background:var(--accent-soft)}.mobile-nav .nav-cta{text-align:center;color:#fff;margin-top:6px}.card-grid,.term-layout{grid-template-columns:1fr}.hero{padding-top:60px}.hero-grid{display:block}.hero-visual{display:none}.footer-wrap{align-items:flex-start;flex-direction:column;padding:28px 0}}