:root{--bg: #f6f7f9;--surface: #ffffff;--border: #e2e5ea;--text: #14171c;--muted: #6b7280;--accent: #2563eb;--accent-soft: #eff4ff;--error: #b91c1c;--error-bg: #fef2f2;--warning: #92400e;--warning-bg: #fffbeb;--radius: 12px;color-scheme:light dark}@media (prefers-color-scheme: dark){:root{--bg: #0e1116;--surface: #161b22;--border: #2a3038;--text: #e6e9ef;--muted: #9aa4b2;--accent: #60a5fa;--accent-soft: #1a2233;--error: #fca5a5;--error-bg: #2a1517;--warning: #fcd34d;--warning-bg: #2a2213}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.page{max-width:720px;margin:0 auto;padding:40px 20px 80px}.header h1{margin:0 0 8px;font-size:28px}.subtitle{margin:0;color:var(--muted)}.search{display:flex;gap:8px;margin:28px 0 16px}.search input{flex:1;min-width:0;padding:12px 14px;font-size:16px;color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}.search input:focus-visible,.option:focus-visible,.tab:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.search button{padding:12px 22px;font-size:16px;font-weight:500;color:#fff;background:var(--accent);border:none;border-radius:var(--radius);cursor:pointer}.search button:disabled{opacity:.5;cursor:not-allowed}.card{padding:20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}.video-header{display:flex;gap:16px;align-items:flex-start}.thumb{width:160px;aspect-ratio:16 / 9;object-fit:cover;border-radius:8px;flex-shrink:0}.video-header h2{margin:0 0 4px;font-size:18px;line-height:1.35}.meta{margin:0;color:var(--muted);font-size:14px}.tabs{display:flex;gap:4px;margin:20px 0 12px;border-bottom:1px solid var(--border)}.tab{padding:10px 16px;font-size:15px;color:var(--muted);background:none;border:none;border-bottom:2px solid transparent;cursor:pointer}.tab.active{color:var(--accent);border-bottom-color:var(--accent)}.options{display:flex;flex-direction:column;gap:8px}.option{display:flex;justify-content:space-between;align-items:center;gap:12px;width:100%;padding:14px 16px;text-align:left;color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:background .12s,border-color .12s}.option:hover{background:var(--accent-soft);border-color:var(--accent)}.option-title{font-weight:500}.instant{margin-right:6px}.option-note{color:var(--muted);font-size:13px;text-align:right}.job{position:sticky;bottom:20px;margin-top:20px;padding:18px 20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 8px 28px #0000001f}.job-close{float:right;padding:0 4px;font-size:22px;line-height:1;color:var(--muted);background:none;border:none;cursor:pointer}.job-title{margin:0 0 10px;font-weight:600}.job-file{margin:0 0 12px;word-break:break-word}.badge{padding:2px 8px;margin-left:6px;font-size:12px;font-weight:500;color:var(--accent);background:var(--accent-soft);border-radius:999px}.bar{height:8px;overflow:hidden;background:var(--border);border-radius:999px}.bar-fill{height:100%;background:var(--accent);border-radius:999px;transition:width .4s ease}.download{display:inline-block;padding:10px 20px;font-weight:500;color:#fff;text-decoration:none;background:var(--accent);border-radius:var(--radius)}.preview{margin-top:14px}.preview summary{color:var(--muted);cursor:pointer}.preview pre{max-height:320px;padding:12px;margin-top:10px;overflow:auto;font-size:13px;white-space:pre-wrap;background:var(--bg);border-radius:8px}.alert{padding:12px 14px;margin:12px 0 0;font-size:14px;border-radius:var(--radius)}.alert.error{color:var(--error);background:var(--error-bg)}.alert.warning{color:var(--warning);background:var(--warning-bg)}.footer{margin-top:32px;color:var(--muted);font-size:13px;text-align:center}@media (max-width: 560px){.video-header{flex-direction:column}.thumb{width:100%}.option{flex-direction:column;align-items:flex-start;gap:4px}.option-note{text-align:left}}