:root{--bg:#141210;--bg-2:#1a1611;--surface:#1f1b16;--surface-2:#272219;--surface-3:#2e2820;--border:#352c22;--border-strong:#463a2c;--text:#fff3e8;--muted:#b5a89a;--faint:#8c8175;--brand:#ff6b35;--brand-2:#ff8c42;--brand-press:#e2551f;--brand-soft:rgba(255,107,53,.14);--danger:#ff6b6b;--success:#5bd6a0;--radius:14px;--radius-sm:9px;--shadow:0 18px 40px -20px rgba(0,0,0,.8);--drawer-w:288px}*{box-sizing:border-box}body,html{margin:0;padding:0}body{min-height:100vh;background:radial-gradient(1100px 600px at 80% -10%,rgba(255,107,53,.12),transparent 60%),radial-gradient(900px 500px at -10% 110%,rgba(255,140,66,.08),transparent 55%),var(--bg);color:var(--text);font-family:Inter,PingFang SC,Microsoft YaHei,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}::selection{background:var(--brand-soft)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;border:1px solid transparent;border-radius:var(--radius-sm);background:var(--surface-2);color:var(--text);cursor:pointer;font-weight:600;font-size:14px;transition:background .15s ease,border-color .15s ease,transform .05s ease,opacity .15s ease}.btn:active{transform:translateY(1px)}.btn:disabled{cursor:not-allowed;opacity:.55}.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#1b1206;box-shadow:0 8px 22px -10px rgba(255,107,53,.7)}.btn-primary:hover:not(:disabled){background:linear-gradient(135deg,var(--brand-2),var(--brand))}.btn-ghost{background:transparent;border-color:var(--border-strong);color:var(--muted)}.btn-ghost:hover:not(:disabled){color:var(--text);border-color:var(--brand)}.btn-icon{min-height:40px;width:40px;padding:0;border-radius:10px;background:var(--surface-2);border-color:var(--border);font-size:17px}.btn-icon:hover:not(:disabled){border-color:var(--brand);color:var(--brand)}.btn-sm{min-height:36px;padding:0 13px;font-size:13px}.app{min-height:100vh}.topbar{position:-webkit-sticky;position:sticky;top:0;z-index:30;gap:14px;padding:16px 24px;background:rgba(20,18,16,.72);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}.brand,.topbar{display:flex;align-items:center}.brand{gap:11px}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#1b1206;font-size:18px;box-shadow:0 6px 16px -6px rgba(255,107,53,.7)}.brand-name{font-size:16px;font-weight:700;letter-spacing:.2px}.brand-sub{font-size:12px;color:var(--faint)}.topbar-spacer{flex:1 1}.main{max-width:860px;margin:0 auto;padding:40px 24px 80px}.hero{text-align:center;margin-bottom:26px}.hero h1{margin:0 0 8px;font-size:30px;font-weight:800;letter-spacing:-.5px}.hero h1 .accent{background:linear-gradient(135deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero p{margin:0;color:var(--muted);font-size:14px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.card+.card{margin-top:18px}.card-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.card-header h2{margin:0;font-size:15px;font-weight:700}.inputbar{display:flex;gap:10px;padding:8px;background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--radius);box-shadow:var(--shadow);transition:border-color .15s ease}.inputbar:focus-within{border-color:var(--brand)}.inputbar input{flex:1 1;min-width:0;height:46px;padding:0 14px;border:0;background:transparent;color:var(--text);font-size:15px;outline:none}.inputbar input::placeholder{color:var(--faint)}.platform-hint{margin:12px 2px 0;display:flex;flex-wrap:wrap;gap:7px;justify-content:center}.chip{display:inline-flex;align-items:center;gap:5px;padding:4px 11px;border-radius:999px;background:var(--surface-2);border:1px solid var(--border);color:var(--muted);font-size:12px}.status-line{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.status-step{color:var(--muted);font-size:13px}.progress{margin-top:14px;height:8px;border-radius:999px;background:var(--surface-3);overflow:hidden}.progress>span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .4s ease}.progress.indeterminate>span{width:35%!important;animation:slide 1.2s ease-in-out infinite}@keyframes slide{0%{transform:translateX(-120%)}to{transform:translateX(380%)}}.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;background:var(--brand-soft);color:var(--brand-2);border:1px solid rgba(255,107,53,.3)}.badge.is-completed{background:rgba(91,214,160,.14);color:var(--success);border-color:rgba(91,214,160,.3)}.badge.is-failed{background:hsla(0,100%,71%,.14);color:var(--danger);border-color:hsla(0,100%,71%,.3)}.badge-dot{width:7px;height:7px;border-radius:50%;background:currentColor}.badge.is-active .badge-dot{animation:pulse 1.1s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.3}}.source-url{margin-top:12px;font-size:12px;color:var(--faint);word-break:break-all}.alert{padding:11px 14px;border-radius:var(--radius-sm);font-size:13px;background:hsla(0,100%,71%,.1);border:1px solid hsla(0,100%,71%,.3);color:#ffb3b3}.alert.alert-inline{margin-top:12px}.video-info{display:flex;gap:16px;align-items:flex-start}.video-thumb{width:168px;height:96px;object-fit:cover;border-radius:var(--radius-sm);flex-shrink:0;border:1px solid var(--border)}.video-details{flex:1 1;min-width:0;display:grid;grid-gap:7px;gap:7px}.video-details h3{margin:0;font-size:15px;line-height:1.4}.meta-row{display:flex;flex-wrap:wrap;gap:8px 16px;color:var(--muted);font-size:13px}.file-path{display:block;margin-top:2px;padding:7px 10px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:11px;color:var(--faint);word-break:break-all}.text-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:18px;gap:18px;margin-top:18px}.text-display{white-space:pre-wrap;border:1px solid var(--border);border-radius:var(--radius-sm);max-height:360px;overflow-y:auto}.text-display,.text-editor{line-height:1.75;padding:13px;background:var(--surface-2);font-size:14px;color:var(--text)}.text-editor{width:100%;min-height:220px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);resize:vertical;font-family:inherit;outline:none}.text-editor:focus{border-color:var(--brand)}.placeholder{color:var(--faint);font-size:13px;padding:18px 0;text-align:center}.sub-label{color:var(--faint);font-size:12px;font-weight:600;margin:14px 0 6px}.action-bar{display:flex;gap:8px;margin-top:13px;flex-wrap:wrap}.edited-tag{display:inline-flex;padding:2px 9px;border-radius:999px;background:var(--surface-3);color:var(--muted);font-size:11px;font-weight:600}.drawer{position:fixed;top:0;left:0;z-index:50;width:var(--drawer-w);height:100vh;background:var(--bg-2);border-right:1px solid var(--border);transform:translateX(-100%);transition:transform .25s ease;display:flex;flex-direction:column}.drawer.open{transform:translateX(0)}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid var(--border)}.drawer-head h2{margin:0;font-size:14px;font-weight:700}.drawer-list{flex:1 1;overflow-y:auto;padding:12px;display:grid;grid-gap:9px;gap:9px;align-content:start}.history-item{display:grid;grid-gap:6px;gap:6px;padding:12px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);cursor:pointer;text-align:left;width:100%;transition:border-color .15s ease,background .15s ease}.history-item:hover{border-color:var(--border-strong)}.history-item.active{border-color:var(--brand);background:var(--brand-soft)}.history-top{display:flex;justify-content:space-between;gap:8px;font-size:11px;color:var(--faint)}.history-url{font-size:12px;color:var(--text);word-break:break-all;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.history-empty{color:var(--faint);font-size:13px;text-align:center;padding:28px 12px}.overlay{position:fixed;inset:0;z-index:40;background:rgba(0,0,0,.5);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.empty-state{margin-top:40px;text-align:center;color:var(--faint);font-size:14px}.spinner{display:inline-block;width:15px;height:15px;border:2px solid;border-right:2px solid transparent;border-radius:50%;animation:spin .7s linear infinite;vertical-align:-2px}@keyframes spin{to{transform:rotate(1turn)}}@media (max-width:820px){.main{padding:28px 16px 64px}.text-grid{grid-template-columns:1fr}.video-thumb{width:120px;height:68px}}