@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=IBM+Plex+Mono:wght@400;500&family=Lora:wght@600;700&display=swap");:root{--color-bg:#f7f8f6;--color-surface:#fff;--color-surface-alt:#eef1ec;--color-surface-dark:#e2e7de;--color-border:#d4d9cf;--color-text:#1b1f18;--color-text-muted:#5c6356;--color-accent:#0d7c66;--color-accent-light:#11a085;--color-accent-subtle:#e8f5f0;--color-accent-dark:#095c4b;--color-warn:#c2410c;--color-blue:#1d4ed8;--font-display:"Lora",Georgia,serif;--font-body:"IBM Plex Sans",system-ui,sans-serif;--font-mono:"IBM Plex Mono",monospace;--max-width:1100px;--radius:8px}*,:after,:before{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-body);background:var(--color-bg);color:var(--color-text);line-height:1.75;font-size:17px;-webkit-font-smoothing:antialiased}a{color:var(--color-accent);text-decoration:none;transition:color .2s}a:hover{color:var(--color-accent-light)}h1,h2,h3,h4{font-family:var(--font-display);color:var(--color-text);line-height:1.25}.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}.article-content{max-width:740px;margin:0 auto}.article-content h1{font-size:clamp(1.9rem,4vw,2.6rem);margin-bottom:14px}.article-content h2{font-size:clamp(1.3rem,2.5vw,1.65rem);margin-top:44px;margin-bottom:14px;padding-bottom:6px;border-bottom:2px solid var(--color-border)}.article-content h3{font-size:1.15rem;margin-top:28px;margin-bottom:10px;color:var(--color-accent);font-family:var(--font-body);font-weight:600}.article-content p{margin-bottom:18px}.article-content ol,.article-content ul{margin-bottom:18px;padding-left:24px}.article-content li{margin-bottom:6px}.article-meta{color:var(--color-text-muted);font-size:.88rem;margin-bottom:36px;padding-bottom:18px;border-bottom:1px solid var(--color-border)}.article-label{display:inline-block;background:var(--color-accent);color:#fff;padding:3px 10px;border-radius:4px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.5px;margin-bottom:14px}.info-box{background:var(--color-accent-subtle);border-left:4px solid var(--color-accent);padding:18px 22px;margin:24px 0;border-radius:0 var(--radius) var(--radius) 0}.info-box p{margin-bottom:0;color:var(--color-text-muted)}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));grid-gap:18px;gap:18px;margin:32px 0}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:22px;transition:transform .2s,box-shadow .2s}.card:hover{transform:translateY(-2px);box-shadow:0 4px 16px rgba(0,0,0,.06)}.card h3{font-family:var(--font-display);font-size:1.05rem;margin-bottom:6px}.card p{color:var(--color-text-muted);font-size:.92rem;line-height:1.6}.card-tag{display:inline-block;background:var(--color-accent-subtle);color:var(--color-accent);font-size:.7rem;font-weight:600;padding:2px 8px;border-radius:3px;text-transform:uppercase;margin-bottom:8px}.page-header{padding:60px 0 32px;text-align:center}.page-header h1{font-size:clamp(2rem,5vw,3rem);margin-bottom:10px}.page-header p{color:var(--color-text-muted);font-size:1.05rem;max-width:560px;margin:0 auto}.term-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:18px 22px;margin-bottom:12px;transition:border-color .2s;cursor:pointer}.term-card.open,.term-card:hover{border-color:var(--color-accent)}.term-card.open{background:var(--color-accent-subtle)}.term-word{font-family:var(--font-mono);font-weight:500;font-size:1.05rem;color:var(--color-accent-dark)}.term-short{color:var(--color-text-muted);font-size:.92rem;margin-left:12px}.term-detail{margin-top:12px;padding-top:12px;border-top:1px solid var(--color-border);color:var(--color-text);font-size:.95rem;line-height:1.7}.term-category{display:inline-block;background:var(--color-surface-alt);color:var(--color-text-muted);font-size:.68rem;font-weight:600;padding:2px 7px;border-radius:3px;text-transform:uppercase;margin-left:10px;letter-spacing:.3px}.search-bar{width:100%;padding:14px 18px;background:var(--color-surface);border:2px solid var(--color-border);border-radius:var(--radius);font-family:var(--font-body);font-size:1rem;color:var(--color-text);transition:border-color .2s}.search-bar:focus{outline:none;border-color:var(--color-accent)}.search-bar::placeholder{color:var(--color-text-muted)}.filter-pills{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 24px}.filter-pill{padding:6px 14px;border-radius:20px;font-size:.85rem;font-weight:500;border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-muted);cursor:pointer;transition:all .2s}.filter-pill:hover{border-color:var(--color-accent);color:var(--color-accent)}.filter-pill.active{background:var(--color-accent);color:#fff;border-color:var(--color-accent)}.resource-section{margin:50px 0;padding:36px 0;border-top:1px solid var(--color-border)}.resource-section h2{font-family:var(--font-display);font-size:1.5rem;margin-bottom:14px}.resource-section p{color:var(--color-text-muted);margin-bottom:18px;max-width:640px}.resource-links{display:flex;flex-wrap:wrap;gap:10px}.resource-link{background:var(--color-surface);border:1px solid var(--color-border);padding:9px 18px;border-radius:var(--radius);color:var(--color-text);font-size:.92rem;transition:border-color .2s,background .2s}.resource-link:hover{border-color:var(--color-accent);background:var(--color-accent-subtle);color:var(--color-accent)}.form-group{margin-bottom:18px}.form-group label{display:block;margin-bottom:5px;font-weight:500;color:var(--color-text-muted);font-size:.92rem}.form-group input,.form-group textarea{width:100%;padding:11px 14px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);color:var(--color-text);font-family:var(--font-body);font-size:1rem}.form-group textarea{min-height:120px;resize:vertical}.btn{display:inline-block;background:var(--color-accent);color:#fff;padding:11px 24px;border:none;border-radius:var(--radius);font-family:var(--font-body);font-size:1rem;font-weight:600;cursor:pointer;transition:background .2s}.btn:hover{background:var(--color-accent-light)}.quiz-option{display:block;width:100%;text-align:left;padding:14px 18px;background:var(--color-surface);border:2px solid var(--color-border);border-radius:var(--radius);font-family:var(--font-body);font-size:.95rem;color:var(--color-text);cursor:pointer;margin-bottom:8px;transition:all .2s}.quiz-option:hover{border-color:var(--color-accent);background:var(--color-accent-subtle)}.quiz-option.correct{border-color:#16a34a;background:#f0fdf4;color:#15803d}.quiz-option.wrong{border-color:#dc2626;background:#fef2f2;color:#dc2626}.quiz-option.disabled{pointer-events:none;opacity:.7}@media (max-width:768px){.card-grid{grid-template-columns:1fr}body{font-size:16px}.resource-links{flex-direction:column}}