:root{--bg: #0b0e1a;--bg-soft: #121729;--card: #161c30;--card-border: #242c47;--text: #e8ecf6;--muted: #8b93ad;--primary: #6d5efc;--primary-hover: #5a4be8;--accent: #37d4c5;--warn: #f5a623;--radius: 16px;--shadow: 0 12px 32px rgba(0, 0, 0, .35);font-family:Segoe UI,PingFang SC,Microsoft YaHei,system-ui,-apple-system,sans-serif}*{box-sizing:border-box}body{margin:0;background:radial-gradient(1200px 500px at 80% -10%,rgba(109,94,252,.18),transparent 60%),radial-gradient(900px 400px at 10% 110%,rgba(55,212,197,.12),transparent 60%),var(--bg);color:var(--text);min-height:100vh}.hidden{display:none!important}.muted{color:var(--muted);font-size:.86em}code{background:#6d5efc29;border:1px solid rgba(109,94,252,.3);border-radius:6px;padding:1px 6px;font-size:.85em}.hero{max-width:1080px;margin:0 auto;padding:56px 24px 28px;text-align:center}.badge{display:inline-block;background:#37d4c524;border:1px solid rgba(55,212,197,.4);color:var(--accent);padding:6px 14px;border-radius:999px;font-size:13px;letter-spacing:.4px}.hero h1{font-size:clamp(32px,5vw,52px);margin:18px 0 12px;background:linear-gradient(92deg,#fff 10%,#b9c0ff,#6d5efc);-webkit-background-clip:text;background-clip:text;color:transparent}.hero .sub{max-width:720px;margin:0 auto;color:var(--muted);line-height:1.9;font-size:16px}.hero .sub strong{color:var(--accent)}.grid{max-width:1080px;margin:0 auto;padding:12px 24px 64px;display:grid;grid-template-columns:1fr 1fr;gap:22px}.card{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}.card.wide{grid-column:1 / -1}.card h2{margin:0 0 18px;font-size:19px;display:flex;align-items:center;gap:10px}.step{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,var(--primary),#8f7bff);color:#fff;font-size:14px;font-weight:700}.drop-zone{border:2px dashed #303a5e;border-radius:14px;padding:36px 18px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s,transform .15s;background:#ffffff04}.drop-zone:hover,.drop-zone.dragging{border-color:var(--primary);background:#6d5efc1a;transform:translateY(-2px)}.drop-zone.has-file{border-style:solid;border-color:#37d4c580}.dz-icon{font-size:42px;margin-bottom:8px}.drop-zone p{margin:6px 0}.privacy-note{margin-top:16px;padding:12px 14px;background:#37d4c514;border:1px solid rgba(55,212,197,.22);border-radius:12px;font-size:13px;line-height:1.8;color:#a9e9e1}.file-info{margin-top:18px;padding:14px 16px;background:var(--bg-soft);border:1px solid var(--card-border);border-radius:12px}.fi-name{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.fi-meta{display:flex;flex-wrap:wrap;gap:14px;margin-top:8px;color:var(--muted);font-size:13px}.warn{margin-top:10px;color:var(--warn);font-size:13px}.field-label{display:block;margin:20px 0 10px;font-size:14px;font-weight:600}.field-label .muted{margin-left:8px;font-weight:400}.seg{display:flex;flex-wrap:wrap;gap:10px}.seg-btn{background:var(--bg-soft);border:1px solid var(--card-border);color:var(--text);padding:10px 18px;border-radius:11px;cursor:pointer;font-size:14px;transition:border-color .18s,background .18s,transform .12s}.seg-btn:hover{border-color:var(--primary);transform:translateY(-1px)}.seg-btn.active{background:linear-gradient(135deg,var(--primary),#8471ff);border-color:transparent;color:#fff;font-weight:600}.range-row{display:flex;gap:12px}.range-item{flex:1;display:flex;flex-direction:column;gap:6px}.range-item input{background:var(--bg-soft);border:1px solid var(--card-border);color:var(--text);border-radius:10px;padding:10px 12px;font-size:14px;outline:none}.range-item input:focus{border-color:var(--primary)}.primary-btn{margin-top:24px;width:100%;padding:15px 20px;border:none;border-radius:13px;background:linear-gradient(135deg,var(--primary),#8471ff);color:#fff;font-size:16px;font-weight:600;cursor:pointer;transition:transform .15s,filter .2s,opacity .2s;text-align:center;text-decoration:none;display:block}.primary-btn:hover:not(:disabled){transform:translateY(-2px);filter:brightness(1.08)}.primary-btn:disabled{opacity:.45;cursor:not-allowed}.ghost-btn{background:transparent;border:1px solid var(--card-border);color:var(--muted);border-radius:9px;padding:7px 14px;cursor:pointer;font-size:13px;transition:border-color .18s}.ghost-btn:hover{border-color:var(--primary);color:var(--text)}.progress-wrap{margin-bottom:18px}.progress-bar{height:12px;background:var(--bg-soft);border-radius:999px;overflow:hidden;border:1px solid var(--card-border)}.progress-fill{height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--accent));transition:width .25s ease}.progress-text{margin-top:10px;color:var(--muted);font-size:14px}.result-box{margin-top:20px;padding:18px;background:#37d4c512;border:1px solid rgba(55,212,197,.25);border-radius:14px}.result-meta{display:flex;justify-content:space-between;gap:12px;font-weight:600;margin-bottom:12px;flex-wrap:wrap}.result-box audio{width:100%;margin-bottom:14px}.primary-btn.download{margin-top:0}.log-details{margin-top:18px}.log-details summary{cursor:pointer;color:var(--muted);font-size:14px}.log-box{margin-top:12px;max-height:220px;overflow:auto;background:#0a0d17;border:1px solid var(--card-border);border-radius:10px;padding:12px 14px;font-size:12px;line-height:1.7;color:#9aa6c4;white-space:pre-wrap;word-break:break-all}.about-list{margin:0;padding-left:20px;line-height:2;color:var(--muted);font-size:14.5px}.about-list b{color:var(--text)}.engine-row{margin-top:20px;padding-top:18px;border-top:1px solid var(--card-border);display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:14px}.engine-row #engine-status{color:var(--accent);flex:1;min-width:200px}.footer{text-align:center;color:var(--muted);font-size:13px;padding:28px 20px 40px;border-top:1px solid var(--card-border)}@media(max-width:820px){.grid{grid-template-columns:1fr}.hero{padding-top:40px}.range-row{flex-direction:column}}