.math-portal[data-astro-cid-glvf5kyw]{--primary: #0891b2;--primary-light: #ecfeff;--primary-glow: rgba(8, 145, 178, .1);--secondary: #1a73e8;--secondary-glow: rgba(26, 115, 232, .15);background:var(--bg);padding-bottom:5rem}.math-hero[data-astro-cid-glvf5kyw]{position:relative;background:radial-gradient(circle at 70% 30%,var(--primary-glow),transparent 60%),radial-gradient(circle at 10% 80%,var(--secondary-glow),transparent 50%),var(--surface);border-bottom:1px solid var(--border);padding:5rem 0 4rem;overflow:hidden}.math-badge[data-astro-cid-glvf5kyw]{background:var(--primary-light);color:var(--primary);font-weight:600;padding:.4rem .8rem;border-radius:50px;font-size:.85rem;display:inline-block;margin-bottom:1.5rem;border:1px solid rgba(8,145,178,.2)}.math-hero[data-astro-cid-glvf5kyw] h1[data-astro-cid-glvf5kyw]{font-size:2.8rem;font-weight:800;color:var(--navy);line-height:1.15;margin-bottom:1rem;letter-spacing:-.03em}.highlight[data-astro-cid-glvf5kyw]{color:var(--primary)}.subtitle[data-astro-cid-glvf5kyw]{max-width:700px;font-size:1.1rem;color:var(--muted);margin-bottom:2.5rem}.stats-row[data-astro-cid-glvf5kyw]{display:flex;gap:1.5rem;flex-wrap:wrap}.stat-card[data-astro-cid-glvf5kyw]{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem 2rem;min-width:160px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease}.stat-card[data-astro-cid-glvf5kyw]:hover{transform:translateY(-2px);box-shadow:0 4px 20px #0000000f}.stat-card[data-astro-cid-glvf5kyw] .num[data-astro-cid-glvf5kyw]{display:block;font-size:2.2rem;font-weight:800;color:var(--navy);line-height:1.2}.stat-card[data-astro-cid-glvf5kyw] .label[data-astro-cid-glvf5kyw]{font-size:.85rem;color:var(--muted);font-weight:500}.portal-nav[data-astro-cid-glvf5kyw]{display:flex;gap:.5rem;border-bottom:1px solid var(--border);padding:2.5rem 0 1rem;position:sticky;top:64px;background:#f8f7f4d9;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);z-index:10}.portal-nav-btn[data-astro-cid-glvf5kyw]{border:none;background:transparent;padding:.75rem 1.25rem;font-size:.95rem;font-weight:600;color:var(--muted);border-radius:8px;cursor:pointer;transition:all .2s ease}.portal-nav-btn[data-astro-cid-glvf5kyw]:hover{color:var(--text);background:#00000008}.portal-nav-btn[data-astro-cid-glvf5kyw].active{color:var(--primary);background:var(--primary-light);box-shadow:inset 0 0 0 1px #0891b226}.portal-pane[data-astro-cid-glvf5kyw]{display:none;padding-top:2rem}.portal-pane[data-astro-cid-glvf5kyw].active{display:block;animation:fadeIn .3s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.pane-header[data-astro-cid-glvf5kyw]{margin-bottom:2rem}.pane-header[data-astro-cid-glvf5kyw] h2[data-astro-cid-glvf5kyw]{font-size:1.75rem;color:var(--navy);margin-bottom:.3rem}.pane-header[data-astro-cid-glvf5kyw] p[data-astro-cid-glvf5kyw]{color:var(--muted);font-size:.95rem}.formulas-grid[data-astro-cid-glvf5kyw]{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:1.5rem}.formula-card[data-astro-cid-glvf5kyw]{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.75rem;box-shadow:var(--shadow);display:flex;flex-direction:column}.card-head[data-astro-cid-glvf5kyw]{display:flex;align-items:center;gap:.75rem;margin-bottom:.75rem}.card-icon[data-astro-cid-glvf5kyw]{font-size:1.5rem}.card-head[data-astro-cid-glvf5kyw] h3[data-astro-cid-glvf5kyw]{font-size:1.25rem;color:var(--navy);font-family:Inter,sans-serif;font-weight:700}.card-desc[data-astro-cid-glvf5kyw]{font-size:.9rem;color:var(--muted);margin-bottom:1.25rem;line-height:1.45}.formula-list[data-astro-cid-glvf5kyw]{list-style:none;display:flex;flex-direction:column;gap:1rem;margin-top:auto}.formula-list[data-astro-cid-glvf5kyw] li[data-astro-cid-glvf5kyw]{font-size:.85rem;color:var(--text)}.formula-list[data-astro-cid-glvf5kyw] li[data-astro-cid-glvf5kyw] strong[data-astro-cid-glvf5kyw]{display:block;font-size:.85rem;color:var(--navy);margin-bottom:.2rem}.formula-code[data-astro-cid-glvf5kyw]{display:block;background:var(--bg);border:1px solid var(--border);padding:.4rem .6rem;border-radius:6px;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;font-size:.82rem;color:#0366d6;word-break:break-all}.solvers-grid[data-astro-cid-glvf5kyw]{display:grid;grid-template-columns:repeat(auto-fill,minmax(460px,1fr));gap:2rem}@media(max-width:540px){.solvers-grid[data-astro-cid-glvf5kyw]{grid-template-columns:1fr}}.solver-card[data-astro-cid-glvf5kyw]{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;box-shadow:var(--shadow)}.solver-header[data-astro-cid-glvf5kyw]{display:flex;align-items:center;gap:.75rem;margin-bottom:.5rem}.solver-icon[data-astro-cid-glvf5kyw]{font-size:1.6rem}.solver-header[data-astro-cid-glvf5kyw] h3[data-astro-cid-glvf5kyw]{font-size:1.35rem;color:var(--navy);font-family:Inter,sans-serif;font-weight:700}.solver-desc[data-astro-cid-glvf5kyw]{font-size:.9rem;color:var(--muted);margin-bottom:1.5rem}.solver-inputs[data-astro-cid-glvf5kyw]{display:flex;flex-wrap:wrap;gap:1rem;margin-bottom:1.5rem}.input-group[data-astro-cid-glvf5kyw]{flex:1 1 calc(50% - .5rem);display:flex;flex-direction:column;gap:.4rem}.input-group[data-astro-cid-glvf5kyw].full-width{flex:1 1 100%}.input-group[data-astro-cid-glvf5kyw] label[data-astro-cid-glvf5kyw]{font-size:.82rem;font-weight:600;color:var(--navy)}.input-group[data-astro-cid-glvf5kyw] input[data-astro-cid-glvf5kyw]{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:.6rem .8rem;font-size:.95rem;font-family:inherit;color:var(--text);outline:none;transition:border-color .15s ease,box-shadow .15s ease}.input-group[data-astro-cid-glvf5kyw] input[data-astro-cid-glvf5kyw]:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.calc-btn[data-astro-cid-glvf5kyw]{width:100%;background:var(--navy);color:var(--surface);border:none;border-radius:8px;padding:.8rem 1rem;font-size:.95rem;font-weight:600;cursor:pointer;transition:background .15s ease}.calc-btn[data-astro-cid-glvf5kyw]:hover{background:#0d162a}.solver-results-box[data-astro-cid-glvf5kyw]{margin-top:1.5rem;padding:1.25rem;border-radius:8px;background:var(--primary-light);border:1px solid rgba(8,145,178,.15);animation:slideDown .25s ease-out}.solver-results-box[data-astro-cid-glvf5kyw].hidden{display:none}@keyframes slideDown{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}.quiz-layout[data-astro-cid-glvf5kyw]{max-width:750px;margin:0 auto;display:flex;flex-direction:column;gap:2rem}.quiz-question-card[data-astro-cid-glvf5kyw]{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;box-shadow:var(--shadow);transition:border-color .2s ease,box-shadow .2s ease;position:relative;overflow:hidden}.q-header[data-astro-cid-glvf5kyw]{display:flex;align-items:center;justify-content:space-between;margin-bottom:.75rem}.q-number[data-astro-cid-glvf5kyw]{font-size:.8rem;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}.q-badge[data-astro-cid-glvf5kyw]{background:var(--green-soft);color:var(--green);font-size:.75rem;font-weight:700;padding:.2rem .5rem;border-radius:4px}.q-badge[data-astro-cid-glvf5kyw].hidden{display:none}.q-text[data-astro-cid-glvf5kyw]{font-size:1.15rem;font-weight:600;color:var(--navy);margin-bottom:1.5rem;line-height:1.45}.q-options[data-astro-cid-glvf5kyw]{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem;margin-bottom:1rem}.opt-btn[data-astro-cid-glvf5kyw]{display:flex;align-items:center;gap:.75rem;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:.85rem 1.25rem;cursor:pointer;font-family:inherit;font-size:.95rem;text-align:left;color:var(--text);transition:all .15s ease}.opt-btn[data-astro-cid-glvf5kyw]:hover{background:var(--surface);border-color:var(--primary)}.opt-lbl[data-astro-cid-glvf5kyw]{display:flex;align-items:center;justify-content:center;background:var(--surface);border:1px solid var(--border);width:28px;height:28px;border-radius:6px;font-size:.85rem;font-weight:700;color:var(--muted);flex-shrink:0}.opt-btn[data-astro-cid-glvf5kyw].correct{background:var(--green-soft);border-color:var(--green);color:#1b5e20}.opt-btn[data-astro-cid-glvf5kyw].correct .opt-lbl[data-astro-cid-glvf5kyw]{background:var(--green);color:var(--surface);border-color:var(--green)}.opt-btn[data-astro-cid-glvf5kyw].wrong{background:var(--accent-soft);border-color:var(--accent);color:#b71c1c}.opt-btn[data-astro-cid-glvf5kyw].wrong .opt-lbl[data-astro-cid-glvf5kyw]{background:var(--accent);color:var(--surface);border-color:var(--accent)}.opt-btn[data-astro-cid-glvf5kyw].disabled{pointer-events:none;opacity:.8}.explanation-box[data-astro-cid-glvf5kyw]{margin-top:1.5rem;padding:1.25rem;border-radius:8px;background:#f0fdf4;border:1px solid rgba(52,168,83,.15);animation:slideDown .3s ease-out}.explanation-box[data-astro-cid-glvf5kyw].hidden{display:none}.exp-title[data-astro-cid-glvf5kyw]{font-size:.85rem;font-weight:700;color:var(--green);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem;display:flex;align-items:center;gap:.4rem}.exp-content[data-astro-cid-glvf5kyw]{font-size:.92rem;color:#2e7d32;line-height:1.6;white-space:pre-line}