.page-header[data-astro-cid-auy56pe7]{padding:var(--space-2xl) 0 var(--space-xl);background-color:var(--color-canvas);border-bottom:1px solid var(--color-hairline)}.back-link[data-astro-cid-auy56pe7]{color:var(--color-body);margin-bottom:var(--space-md);transition:color var(--transition-fast);align-items:center;gap:4px;font-size:.875rem;text-decoration:none;display:inline-flex}.back-link[data-astro-cid-auy56pe7]:hover{color:var(--color-ink)}.page-title[data-astro-cid-auy56pe7]{letter-spacing:-.04em;margin-bottom:var(--space-md);color:var(--color-ink);font-size:2.5rem;font-weight:600}.page-description[data-astro-cid-auy56pe7]{color:var(--color-body);max-width:600px;font-size:1.125rem}.calculator-section[data-astro-cid-auy56pe7]{padding:var(--space-3xl) 0 var(--space-5xl)}.calculator-card[data-astro-cid-auy56pe7]{background-color:var(--color-canvas);border:1px solid var(--color-hairline);border-radius:var(--radius-lg);padding:var(--space-xl);max-width:600px}.input-row[data-astro-cid-auy56pe7]{gap:var(--space-md);margin-bottom:var(--space-xl);grid-template-columns:1fr 1fr;display:grid}.input-group[data-astro-cid-auy56pe7]{gap:var(--space-xs);flex-direction:column;display:flex}.input-label[data-astro-cid-auy56pe7]{color:var(--color-ink);font-size:.875rem;font-weight:500}.input-wrapper[data-astro-cid-auy56pe7]{align-items:center;display:flex;position:relative}.input[data-astro-cid-auy56pe7]{width:100%;height:48px;padding:0 var(--space-md);font-family:var(--font-family);color:var(--color-ink);background-color:var(--color-canvas);border:1px solid var(--color-hairline);border-radius:var(--radius-sm);transition:border-color var(--transition-fast), box-shadow var(--transition-fast);font-size:1rem}.input[data-astro-cid-auy56pe7]:focus{border-color:var(--color-primary);outline:none;box-shadow:0 0 0 3px #0070f31a}.input[data-astro-cid-auy56pe7]::placeholder{color:var(--color-mute)}.grade-result[data-astro-cid-auy56pe7]{align-items:center;gap:var(--space-xl);padding:var(--space-xl);background-color:var(--color-canvas-soft);border-radius:var(--radius-md);margin-bottom:var(--space-xl);display:flex}.grade-letter[data-astro-cid-auy56pe7]{color:var(--color-primary);text-align:center;min-width:80px;font-size:4rem;font-weight:700}.grade-details[data-astro-cid-auy56pe7]{gap:var(--space-xs);flex-direction:column;display:flex}.grade-percent[data-astro-cid-auy56pe7]{color:var(--color-ink);font-size:1.5rem;font-weight:600}.grade-name[data-astro-cid-auy56pe7]{color:var(--color-body);font-size:.875rem}.grade-scale[data-astro-cid-auy56pe7]{padding-top:var(--space-xl);border-top:1px solid var(--color-hairline);gap:var(--space-sm);grid-template-columns:repeat(auto-fill,minmax(100px,1fr));display:grid}.scale-item[data-astro-cid-auy56pe7]{padding:var(--space-sm);background-color:var(--color-canvas-soft);border-radius:var(--radius-sm);flex-direction:column;align-items:center;display:flex}.grade[data-astro-cid-auy56pe7]{font-size:.875rem;font-weight:600}.grade[data-astro-cid-auy56pe7].a{color:#16a34a}.grade[data-astro-cid-auy56pe7].b{color:#2563eb}.grade[data-astro-cid-auy56pe7].c{color:#ca8a04}.grade[data-astro-cid-auy56pe7].d{color:#ea580c}.grade[data-astro-cid-auy56pe7].f{color:#dc2626}.range[data-astro-cid-auy56pe7]{color:var(--color-body);font-size:.75rem}@media (width<=768px){.page-header[data-astro-cid-auy56pe7]{padding:var(--space-xl) 0 var(--space-lg)}.page-title[data-astro-cid-auy56pe7]{font-size:2rem}.input-row[data-astro-cid-auy56pe7]{grid-template-columns:1fr}.grade-letter[data-astro-cid-auy56pe7]{min-width:60px;font-size:3rem}}.seo-content[data-astro-cid-auy56pe7] h2[data-astro-cid-auy56pe7]{color:var(--color-ink);margin-bottom:var(--space-lg);letter-spacing:-.02em;font-size:1.5rem;font-weight:600}.seo-content[data-astro-cid-auy56pe7] h3[data-astro-cid-auy56pe7]{color:var(--color-ink);margin-top:var(--space-2xl);margin-bottom:var(--space-md);font-size:1.25rem;font-weight:600}.seo-content[data-astro-cid-auy56pe7] p[data-astro-cid-auy56pe7]{color:var(--color-body);margin-bottom:var(--space-md);line-height:1.7}.seo-content[data-astro-cid-auy56pe7] strong[data-astro-cid-auy56pe7]{color:var(--color-ink);font-weight:500}