.conv-upload-zone{border:2px dashed var(--color-outline-variant);border-radius:var(--radius-xl);padding:24px 20px;margin:0 0 16px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s;background:var(--color-surface-container-low)}.conv-upload-zone:hover,.conv-upload-zone.conv-upload-active{border-color:var(--color-primary);background:var(--color-surface-container)}.conv-upload-zone .conv-upload-icon{font-size:32px;color:var(--color-outline);margin-bottom:4px;display:block}.conv-upload-zone:hover .conv-upload-icon{color:var(--color-primary)}.conv-upload-zone p{margin:0;font-size:13px;color:var(--color-on-surface-variant)}html.dark .conv-upload-zone{background:#ffffff08}html.dark .conv-upload-zone:hover,html.dark .conv-upload-zone.conv-upload-active{background:#6366f114}.converter-panels{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:start}.conv-panel{display:flex;flex-direction:column;gap:8px}.conv-panel-header{display:flex;align-items:center;justify-content:space-between}.conv-panel-header label{font-weight:600;font-size:14px;color:var(--text-primary, #1f2937)}.conv-panel-header .conv-char-count{font-size:12px;color:var(--text-tertiary, #9ca3af)}.conv-panel textarea{width:100%;min-height:320px;padding:16px;border:1px solid var(--border-color, #e5e7eb);border-radius:8px;background:var(--bg-primary, #ffffff);color:var(--text-primary, #1f2937);font-family:JetBrains Mono,Cascadia Code,Consolas,monospace;font-size:13px;line-height:1.6;resize:vertical;transition:border-color .2s}.conv-panel textarea:focus{outline:none;border-color:var(--primary-color, #4f46e5);box-shadow:0 0 0 3px #4f46e51a}.conv-panel textarea::placeholder{color:var(--text-tertiary, #9ca3af)}.conv-actions{display:flex;flex-direction:column;gap:8px;padding-top:28px}.conv-btn{display:flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s;white-space:nowrap}.conv-btn-primary{background:var(--primary-color, #4f46e5);color:#fff}.conv-btn-primary:hover{background:var(--primary-dark, #4338ca);transform:translateY(-1px);box-shadow:0 4px 12px #4f46e54d}.conv-btn-secondary{background:var(--bg-secondary, #f3f4f6);color:var(--text-primary, #1f2937);border:1px solid var(--border-color, #e5e7eb)}.conv-btn-secondary:hover{background:var(--border-color, #e5e7eb)}.conv-btn-swap{background:var(--bg-secondary, #f3f4f6);color:var(--primary-color, #4f46e5);border:1px solid var(--border-color, #e5e7eb);font-size:20px;padding:8px}.conv-btn-swap:hover{background:var(--primary-color, #4f46e5);color:#fff;border-color:var(--primary-color, #4f46e5)}.conv-error{display:none;padding:12px 16px;background:#fef2f2;border:1px solid #fecaca;border-radius:8px;color:#dc2626;font-size:13px;margin-top:12px}.conv-success{display:none;padding:8px 16px;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:8px;color:#16a34a;font-size:13px;margin-top:12px}.conv-copy-btn{padding:6px 12px;border:1px solid var(--border-color, #e5e7eb);border-radius:6px;background:var(--bg-primary, #ffffff);color:var(--text-secondary, #6b7280);font-size:12px;cursor:pointer;transition:all .2s}.conv-copy-btn:hover{background:var(--primary-color, #4f46e5);color:#fff;border-color:var(--primary-color, #4f46e5)}.conv-copy-btn.copied{background:#16a34a;color:#fff;border-color:#16a34a}html.dark .conv-panel textarea{background:var(--color-surface-container-lowest, #1e1e2e);border-color:var(--color-outline-variant, #2d2d3d);color:var(--color-on-surface, #e2e8f0)}html.dark .conv-panel-header label{color:var(--color-on-surface, #e2e8f0)}html.dark .conv-btn-secondary{background:var(--color-surface-container-low, #2d2d3d);border-color:var(--color-outline-variant, #3d3d4d);color:var(--color-on-surface, #e2e8f0)}html.dark .conv-btn-swap{background:var(--color-surface-container-low, #2d2d3d);border-color:var(--color-outline-variant, #3d3d4d)}html.dark .conv-error{background:#450a0a;border-color:#991b1b;color:#fca5a5}html.dark .conv-success{background:#052e16;border-color:#166534;color:#86efac}html.dark .conv-copy-btn{background:var(--color-surface-container-lowest, #1e1e2e);border-color:var(--color-outline-variant, #2d2d3d);color:var(--color-on-surface-variant, #94a3b8)}@media (max-width: 768px){.converter-panels{grid-template-columns:1fr}.conv-actions{flex-direction:row;padding-top:0}.conv-panel textarea{min-height:200px}}.feat-section{padding:64px 0}.feat-section .feat-heading{font-family:var(--font-headline);font-size:var(--text-headline-lg);font-weight:600;text-align:center;margin:0 0 48px;color:var(--color-on-surface)}.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--spacing-gutter)}@media (max-width: 1024px){.feat-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 480px){.feat-grid{grid-template-columns:1fr}}.feat-card{padding:32px;background:var(--color-surface-container-lowest);border:1px solid var(--color-border-subtle);border-radius:var(--radius-xl);transition:all var(--transition-normal)}.feat-card:hover{box-shadow:var(--shadow-md);border-color:var(--color-primary)}.feat-card .feat-icon{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:24px}.feat-card .feat-icon.feat-primary{background:var(--color-primary-fixed);color:var(--color-primary)}.feat-card .feat-icon.feat-tertiary{background:var(--color-tertiary-fixed);color:var(--color-tertiary)}.feat-card .feat-icon.feat-secondary{background:var(--color-secondary-fixed);color:var(--color-on-secondary-fixed)}.feat-card .feat-icon.feat-error{background:var(--color-error-container);color:var(--color-on-error-container)}.feat-card h3{font-family:var(--font-headline);font-size:var(--text-title-md);font-weight:600;line-height:var(--text-title-md-line);margin:0 0 12px;color:var(--color-on-surface)}.feat-card p{font-size:var(--text-body-md);color:var(--color-on-surface-variant);margin:0;line-height:var(--text-body-md-line)}.conv-faq-section{padding:64px 0}.conv-faq-section h2{font-family:var(--font-headline);font-size:var(--text-headline-lg);font-weight:600;text-align:center;margin:0 0 48px;color:var(--color-on-surface)}.conv-faq-section details{border:1px solid var(--color-border-subtle);border-radius:var(--radius-xl);margin-bottom:8px;overflow:hidden;background:var(--color-surface-container-lowest)}.conv-faq-section details summary{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;cursor:pointer;font-family:var(--font-headline);font-size:var(--text-title-md);font-weight:600;color:var(--color-on-surface);list-style:none}.conv-faq-section details summary::-webkit-details-marker{display:none}.conv-faq-section details summary .mat-icon{transition:transform .3s;color:var(--color-outline)}.conv-faq-section details[open] summary .mat-icon{transform:rotate(180deg)}.conv-faq-section details .det-content{padding:16px 24px 24px;color:var(--color-on-surface-variant);font-size:var(--text-body-md);line-height:1.7;border-top:1px solid var(--color-border-subtle);margin:0 24px}.related-posts-section{padding:64px 0}.related-posts-section .section-title{font-family:var(--font-headline);font-size:var(--text-headline-lg);font-weight:600;text-align:center;margin:0 0 48px;color:var(--color-on-surface)}.related-posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-gutter)}.related-post-card{display:flex;align-items:center;gap:12px;background:var(--color-surface-bright);border:1px solid var(--color-border-subtle);border-radius:var(--radius-xl);padding:20px 24px;text-decoration:none;color:inherit;transition:all var(--transition-normal);font-family:var(--font-headline);font-size:var(--text-title-sm);font-weight:500}.related-post-card:hover{box-shadow:var(--shadow-md);border-color:var(--color-primary);transform:translateY(-2px)}@media (max-width: 768px){.related-posts-grid{grid-template-columns:1fr}}