.hero[data-astro-cid-3he2njnu]{background:var(--color-bg);border-bottom:1px solid var(--color-border);overflow:hidden;position:relative}.hero[data-astro-cid-3he2njnu]:before{content:"";position:absolute;top:-20%;right:-10%;width:60%;height:140%;background:radial-gradient(ellipse at center,rgba(0,112,243,.04) 0%,transparent 70%);pointer-events:none}.hero-inner[data-astro-cid-3he2njnu]{display:grid;grid-template-columns:1fr 380px;gap:3rem;align-items:center;padding:1rem 0}.hero-eyebrow[data-astro-cid-3he2njnu]{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.25rem}.hero-badge[data-astro-cid-3he2njnu]{font-size:.75rem;font-weight:600;padding:.25rem .625rem;background:var(--color-surface-2);border:1px solid var(--color-border);border-radius:var(--radius-full);color:var(--color-text-secondary)}.hero-title[data-astro-cid-3he2njnu]{font-size:clamp(2rem,5vw,3.25rem);font-weight:800;letter-spacing:-.03em;margin-bottom:1rem;line-height:1.15;color:var(--color-text-primary)}.hero-subtitle[data-astro-cid-3he2njnu]{font-size:1.0625rem;color:var(--color-text-secondary);line-height:1.6;margin-bottom:2rem;max-width:520px}.hero-search-wrap[data-astro-cid-3he2njnu]{margin-bottom:1.5rem}.hero-search[data-astro-cid-3he2njnu]{display:flex;align-items:center;gap:.75rem;width:100%;max-width:480px;height:52px;padding:0 1rem;background:var(--color-surface);border:1.5px solid var(--color-border);border-radius:var(--radius-xl);color:var(--color-text-secondary);font-size:.9375rem;cursor:pointer;font-family:var(--font-sans);text-align:left;transition:border-color var(--duration-base),box-shadow var(--duration-base);box-shadow:var(--shadow-sm)}.hero-search[data-astro-cid-3he2njnu]:hover{border-color:var(--color-border-strong);box-shadow:var(--shadow-md)}.hero-search-text[data-astro-cid-3he2njnu]{flex:1}.hero-search-kbd[data-astro-cid-3he2njnu]{font-size:.75rem;padding:.125rem .5rem;background:var(--color-surface-2);border:1px solid var(--color-border);border-radius:6px;font-family:var(--font-sans);color:var(--color-text-tertiary)}.hero-quick-links[data-astro-cid-3he2njnu]{display:flex;flex-wrap:wrap;align-items:center;gap:.375rem}.hero-quick-label[data-astro-cid-3he2njnu]{font-size:.8125rem;color:var(--color-text-tertiary)}.hero-quick-link[data-astro-cid-3he2njnu]{font-size:.8125rem;color:var(--color-accent);text-decoration:none;padding:.125rem .375rem;border-radius:var(--radius-sm);transition:background var(--duration-fast)}.hero-quick-link[data-astro-cid-3he2njnu]:hover{background:var(--color-accent-subtle)}.hero-features[data-astro-cid-3he2njnu]{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}.hero-feature-card[data-astro-cid-3he2njnu]{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:1.125rem;transition:transform var(--duration-slow) var(--ease-default),box-shadow var(--duration-slow) var(--ease-default)}.hero-feature-card[data-astro-cid-3he2njnu]:nth-child(1){animation:float 6s ease-in-out infinite}.hero-feature-card[data-astro-cid-3he2njnu]:nth-child(2){animation:float 6s ease-in-out infinite 1.5s}.hero-feature-card[data-astro-cid-3he2njnu]:nth-child(3){animation:float 6s ease-in-out infinite 3s}.hero-feature-card[data-astro-cid-3he2njnu]:nth-child(4){animation:float 6s ease-in-out infinite 4.5s}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}@media(prefers-reduced-motion:reduce){.hero-feature-card[data-astro-cid-3he2njnu]{animation:none}}.hero-feature-card-accent[data-astro-cid-3he2njnu]{background:linear-gradient(135deg,var(--color-surface) 0%,var(--color-accent-subtle) 100%);border-color:#0070f333}.hero-feature-icon[data-astro-cid-3he2njnu]{width:36px;height:36px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;margin-bottom:.625rem}.hero-feature-title[data-astro-cid-3he2njnu]{font-size:.8125rem;font-weight:600;color:var(--color-text-primary);margin-bottom:.25rem}.hero-feature-result[data-astro-cid-3he2njnu]{font-size:.875rem;color:var(--color-text-secondary)}.font-mono[data-astro-cid-3he2njnu]{font-family:var(--font-mono)}.section-header[data-astro-cid-3he2njnu]{margin-bottom:2rem}.section-title[data-astro-cid-3he2njnu]{font-size:clamp(1.375rem,3vw,1.875rem);font-weight:700;margin-bottom:.5rem}.section-subtitle[data-astro-cid-3he2njnu]{color:var(--color-text-secondary);font-size:1rem}.categories-grid[data-astro-cid-3he2njnu]{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:.75rem}.category-card[data-astro-cid-3he2njnu]{display:flex;align-items:center;gap:1rem;padding:1.125rem 1.25rem;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);text-decoration:none;color:inherit;transition:border-color var(--duration-base),box-shadow var(--duration-base),transform var(--duration-base)}.category-card[data-astro-cid-3he2njnu]:hover{border-color:var(--color-border-strong);box-shadow:var(--shadow-md);transform:translateY(-1px)}.category-icon[data-astro-cid-3he2njnu]{width:44px;height:44px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0;background:var(--color-surface-2);color:var(--color-text-secondary);transition:background var(--duration-base),color var(--duration-base)}.category-card[data-astro-cid-3he2njnu]:hover .category-icon[data-astro-cid-3he2njnu]{background:var(--cat-color-bg, var(--color-accent-subtle));color:var(--cat-color, var(--color-accent))}.cat-finance[data-astro-cid-3he2njnu]:hover .category-icon[data-astro-cid-3he2njnu]{--cat-color-bg: #eff6ff;--cat-color: #0070f3}.cat-math[data-astro-cid-3he2njnu]:hover .category-icon[data-astro-cid-3he2njnu]{--cat-color-bg: #f5f3ff;--cat-color: #7c3aed}.cat-health[data-astro-cid-3he2njnu]:hover .category-icon[data-astro-cid-3he2njnu]{--cat-color-bg: #ecfdf5;--cat-color: #10b981}.cat-daily[data-astro-cid-3he2njnu]:hover .category-icon[data-astro-cid-3he2njnu]{--cat-color-bg: #fffbeb;--cat-color: #f59e0b}.cat-science[data-astro-cid-3he2njnu]:hover .category-icon[data-astro-cid-3he2njnu]{--cat-color-bg: #ecfeff;--cat-color: #06b6d4}.cat-geometry[data-astro-cid-3he2njnu]:hover .category-icon[data-astro-cid-3he2njnu]{--cat-color-bg: #fdf4ff;--cat-color: #ec4899}.cat-conversions[data-astro-cid-3he2njnu]:hover .category-icon[data-astro-cid-3he2njnu]{--cat-color-bg: #fff7ed;--cat-color: #f97316}.category-info[data-astro-cid-3he2njnu]{flex:1;min-width:0}.category-name[data-astro-cid-3he2njnu]{font-size:.9375rem;font-weight:600;color:var(--color-text-primary)}.category-count[data-astro-cid-3he2njnu]{font-size:.8125rem;color:var(--color-text-tertiary)}.category-arrow[data-astro-cid-3he2njnu]{color:var(--color-text-tertiary);transition:transform var(--duration-base),color var(--duration-base)}.category-card[data-astro-cid-3he2njnu]:hover .category-arrow[data-astro-cid-3he2njnu]{transform:translate(3px);color:var(--color-text-secondary)}.calcs-grid[data-astro-cid-3he2njnu]{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:.75rem}.ruler-feature-section[data-astro-cid-3he2njnu]{background:var(--color-surface);border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border)}.ruler-feature-inner[data-astro-cid-3he2njnu]{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center}.ruler-feature-badge[data-astro-cid-3he2njnu]{display:inline-flex;align-items:center;gap:.375rem;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--color-accent);background:var(--color-accent-subtle);border:1px solid rgba(0,112,243,.2);border-radius:var(--radius-full);padding:.25rem .75rem;margin-bottom:1rem}.ruler-feature-title[data-astro-cid-3he2njnu]{font-size:clamp(1.375rem,3vw,1.875rem);font-weight:700;margin-bottom:.75rem}.ruler-feature-desc[data-astro-cid-3he2njnu]{color:var(--color-text-secondary);font-size:1rem;margin-bottom:1.5rem}.ruler-feature-list[data-astro-cid-3he2njnu]{list-style:none;display:flex;flex-direction:column;gap:.625rem;margin-bottom:2rem}.ruler-feature-list[data-astro-cid-3he2njnu] li[data-astro-cid-3he2njnu]{display:flex;align-items:center;gap:.625rem;font-size:.9375rem;color:var(--color-text-secondary)}.ruler-feature-list[data-astro-cid-3he2njnu] li[data-astro-cid-3he2njnu] svg[data-astro-cid-3he2njnu]{color:var(--color-success);flex-shrink:0}.ruler-cta[data-astro-cid-3he2njnu]{gap:.5rem}.ruler-demo[data-astro-cid-3he2njnu]{border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--color-border);box-shadow:var(--shadow-lg)}.ruler-demo-bar[data-astro-cid-3he2njnu]{display:flex;background:#ffd70014;border-bottom:2px solid rgba(180,155,0,.3);height:56px;align-items:flex-start;padding-top:4px;overflow:hidden}.ruler-demo-cm[data-astro-cid-3he2njnu]{display:flex;flex:1;flex-direction:row;align-items:flex-start;position:relative}.ruler-demo-tick[data-astro-cid-3he2njnu]{width:1px;background:#64500066;flex-shrink:0}.ruler-demo-tick-cm[data-astro-cid-3he2njnu]{height:28px;background:#503c0080}.ruler-demo-tick-mid[data-astro-cid-3he2njnu]{height:18px}.ruler-demo-tick-mm[data-astro-cid-3he2njnu]{height:10px}.ruler-demo-label[data-astro-cid-3he2njnu]{position:absolute;left:3px;top:32px;font-size:9px;font-family:var(--font-mono);color:#503c00b3}.dark[data-astro-cid-3he2njnu] .ruler-demo-label[data-astro-cid-3he2njnu]{color:#ffdc0099}.dark[data-astro-cid-3he2njnu] .ruler-demo-tick[data-astro-cid-3he2njnu]{background:#ffc8004d}.dark[data-astro-cid-3he2njnu] .ruler-demo-tick-cm[data-astro-cid-3he2njnu]{background:#ffd70080}.why-section[data-astro-cid-3he2njnu]{background:var(--color-surface);border-top:1px solid var(--color-border)}.why-grid[data-astro-cid-3he2njnu]{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}.why-card[data-astro-cid-3he2njnu]{padding:1.25rem;background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg)}.why-icon[data-astro-cid-3he2njnu]{width:40px;height:40px;border-radius:var(--radius-md);background:var(--color-surface-2);color:var(--color-text-secondary);display:flex;align-items:center;justify-content:center;margin-bottom:.875rem}.why-title[data-astro-cid-3he2njnu]{font-size:.9375rem;font-weight:600;margin-bottom:.5rem}.why-desc[data-astro-cid-3he2njnu]{font-size:.875rem;color:var(--color-text-secondary);line-height:1.6}.faq-section[data-astro-cid-3he2njnu]{border-top:1px solid var(--color-border)}.faq-header[data-astro-cid-3he2njnu]{text-align:center;margin-bottom:3rem}.faq-badge[data-astro-cid-3he2njnu]{display:inline-block;font-size:.6875rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--color-accent);background:var(--color-accent-subtle);border:1px solid rgba(0,112,243,.2);border-radius:var(--radius-full);padding:.25rem .75rem;margin-bottom:.875rem}.faq-title[data-astro-cid-3he2njnu]{font-size:clamp(1.5rem,4vw,2.25rem);font-weight:800;letter-spacing:-.025em;color:var(--color-text-primary);margin-bottom:.75rem}.faq-subtitle[data-astro-cid-3he2njnu]{font-size:1rem;color:var(--color-text-secondary);max-width:520px;margin:0 auto;line-height:1.6}.faq-link[data-astro-cid-3he2njnu]{color:var(--color-accent);text-decoration:underline;text-decoration-color:transparent;transition:text-decoration-color var(--duration-fast)}.faq-link[data-astro-cid-3he2njnu]:hover{text-decoration-color:var(--color-accent)}.faq-group[data-astro-cid-3he2njnu]{margin-bottom:2.5rem}.faq-group[data-astro-cid-3he2njnu]:last-child{margin-bottom:0}.faq-group-title[data-astro-cid-3he2njnu]{font-size:.75rem;font-weight:800;text-transform:uppercase;letter-spacing:.1em;color:var(--color-accent);padding:.375rem .875rem;border-left:3px solid var(--color-accent);background:var(--color-accent-subtle);border-radius:0 var(--radius-md) var(--radius-md) 0;margin-bottom:.75rem;display:inline-block}.faq-list[data-astro-cid-3he2njnu]{display:flex;flex-direction:column;gap:.5rem}.faq-item[data-astro-cid-3he2njnu]{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden;transition:border-color var(--duration-base),box-shadow var(--duration-base)}.faq-item[data-astro-cid-3he2njnu]:hover{border-color:var(--color-border-strong);box-shadow:var(--shadow-sm)}.faq-item[data-astro-cid-3he2njnu][open]{border-color:#0070f340;box-shadow:0 0 0 3px #0070f30f}.faq-q[data-astro-cid-3he2njnu]{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;font-size:.9375rem;font-weight:600;color:var(--color-text-primary);cursor:pointer;list-style:none;user-select:none;gap:1rem;line-height:1.4}.faq-q[data-astro-cid-3he2njnu]::-webkit-details-marker{display:none}.faq-q[data-astro-cid-3he2njnu]:after{content:"+";font-size:1.375rem;font-weight:300;color:var(--color-accent);flex-shrink:0;width:24px;text-align:center;transition:transform var(--duration-base)}.faq-item[data-astro-cid-3he2njnu][open] .faq-q[data-astro-cid-3he2njnu]:after{content:"−"}.faq-a[data-astro-cid-3he2njnu]{padding:1rem 1.25rem 1.125rem;font-size:.9rem;color:var(--color-text-secondary);line-height:1.75;border-top:1px solid var(--color-border)}.faq-list-inner[data-astro-cid-3he2njnu]{list-style:none;display:flex;flex-direction:column;gap:.375rem;margin-top:.625rem;padding-left:0}.faq-list-inner[data-astro-cid-3he2njnu] li[data-astro-cid-3he2njnu]{display:flex;align-items:flex-start;gap:.5rem;font-size:.875rem;color:var(--color-text-secondary)}.faq-list-inner[data-astro-cid-3he2njnu] li[data-astro-cid-3he2njnu]:before{content:"•";color:var(--color-accent);font-weight:700;flex-shrink:0;margin-top:.05em}.seo-article-section[data-astro-cid-3he2njnu]{background:var(--color-surface);border-top:1px solid var(--color-border)}.seo-article[data-astro-cid-3he2njnu]{max-width:820px;margin:0 auto}.seo-article-title[data-astro-cid-3he2njnu]{font-size:clamp(1.25rem,3vw,1.625rem);font-weight:700;color:var(--color-text-primary);margin-bottom:1.25rem;line-height:1.3}.seo-article[data-astro-cid-3he2njnu] p[data-astro-cid-3he2njnu]{font-size:.9375rem;color:var(--color-text-secondary);line-height:1.8;margin-bottom:1rem}.seo-article[data-astro-cid-3he2njnu] strong[data-astro-cid-3he2njnu]{color:var(--color-text-primary);font-weight:600}.seo-article-h3[data-astro-cid-3he2njnu]{font-size:1.0625rem;font-weight:700;color:var(--color-text-primary);margin-top:1.75rem;margin-bottom:.625rem;padding-left:.75rem;border-left:3px solid var(--color-accent)}.seo-article[data-astro-cid-3he2njnu] a[data-astro-cid-3he2njnu]{color:var(--color-accent);text-decoration:underline;text-decoration-color:transparent;transition:text-decoration-color var(--duration-fast)}.seo-article[data-astro-cid-3he2njnu] a[data-astro-cid-3he2njnu]:hover{text-decoration-color:var(--color-accent)}.seo-article[data-astro-cid-3he2njnu] kbd[data-astro-cid-3he2njnu]{display:inline-block;padding:.125rem .375rem;font-size:.8125rem;font-family:var(--font-mono);background:var(--color-surface-2);border:1px solid var(--color-border);border-radius:4px;color:var(--color-text-secondary)}@media(max-width:1024px){.hero-inner[data-astro-cid-3he2njnu]{grid-template-columns:1fr}.hero-features[data-astro-cid-3he2njnu]{display:none}.ruler-feature-inner[data-astro-cid-3he2njnu]{grid-template-columns:1fr;gap:2rem}.why-grid[data-astro-cid-3he2njnu]{grid-template-columns:repeat(2,1fr)}.faq-grid[data-astro-cid-3he2njnu]{grid-template-columns:1fr}}@media(max-width:640px){.categories-grid[data-astro-cid-3he2njnu],.calcs-grid[data-astro-cid-3he2njnu],.why-grid[data-astro-cid-3he2njnu],.faq-grid[data-astro-cid-3he2njnu]{grid-template-columns:1fr}.hero-title[data-astro-cid-3he2njnu]{font-size:1.875rem}}