:root{
  --primary:#FF6B35;
  --primary-dark:#E85A28;
  --ink:#2D3142;
  --ink-soft:#6B7280;
  --bg:#F7F7F9;
  --card:#FFFFFF;
  --line:#ECECF1;
  --ok:#22C55E;
  --err:#EF4444;
  --warn:#F59E0B;
  --radius:14px;
  --shadow:0 2px 10px rgba(45,49,66,.06);
  --safe-b:env(safe-area-inset-bottom, 0px);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:15px;line-height:1.5;}
#app{max-width:480px;margin:0 auto;min-height:100vh;background:var(--bg);position:relative;
  display:flex;flex-direction:column;}

/* ① 顶栏 */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;
  padding:12px 16px;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:17px}
.logo{font-size:20px}
.quota-badge{font-size:13px;color:var(--primary);background:#FFF1EA;border:1px solid #FFD9C7;
  padding:5px 12px;border-radius:999px;font-weight:600;transition:.2s}
.quota-badge.low{color:var(--warn);background:#FEF7E7;border-color:#FBE3B1}
.quota-badge.zero{color:#fff;background:var(--err);border-color:var(--err)}

.page{flex:1;padding:12px 16px calc(96px + var(--safe-b));}
.block{background:var(--card);border-radius:var(--radius);padding:14px;margin-bottom:12px;box-shadow:var(--shadow)}
.block-title{font-size:13px;font-weight:700;color:var(--ink);margin-bottom:10px;display:flex;
  align-items:center;justify-content:space-between;gap:8px}
.tip{font-size:11px;font-weight:400;color:var(--ink-soft)}

/* ② 行业标签 */
.tabs{display:flex;gap:8px;overflow-x:auto;padding:2px 0;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{flex:0 0 auto;padding:8px 16px;border-radius:999px;background:#F1F1F5;color:var(--ink-soft);
  font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:.15s;white-space:nowrap}
.tab.active{background:var(--primary);color:#fff;box-shadow:0 4px 12px rgba(255,107,53,.3)}

/* ③ 模板卡 */
.cards{display:flex;gap:10px;overflow-x:auto;padding:2px 0 6px;scrollbar-width:none}
.cards::-webkit-scrollbar{display:none}
.card{flex:0 0 auto;width:200px;border:1.5px solid var(--line);border-radius:12px;padding:12px;
  background:#fff;cursor:pointer;transition:.15s}
.card.active{border-color:var(--primary);background:#FFF9F6;box-shadow:0 4px 14px rgba(255,107,53,.14)}
.card-name{font-weight:700;font-size:14px;margin-bottom:8px;line-height:1.35}
.card-meta{display:flex;flex-wrap:wrap;gap:6px}
.meta-pill{font-size:11px;color:var(--ink-soft);background:#F4F4F8;padding:2px 8px;border-radius:6px}
.meta-pill.model{color:var(--primary);background:#FFF1EA}
.quality-row{display:flex;gap:10px}
.quality-opt{flex:1;border:1.5px solid var(--line);border-radius:12px;padding:12px;text-align:center;
  background:#fff;cursor:pointer;transition:.15s}
.quality-opt.active{border-color:var(--primary);background:#FFF9F6;box-shadow:0 4px 14px rgba(255,107,53,.14)}
.quality-name{font-weight:700;font-size:14px;color:var(--ink)}
.quality-opt.active .quality-name{color:var(--primary)}
.quality-sub{font-size:11px;color:var(--ink-soft);margin-top:3px}
.skeleton-card{flex:0 0 auto;width:200px;height:88px;border-radius:12px;
  background:linear-gradient(90deg,#F1F1F5 25%,#E7E7EE 37%,#F1F1F5 63%);background-size:400% 100%;
  animation:sk 1.2s ease infinite}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* ④ 素材行 */
.asset-rows{display:flex;flex-direction:column;gap:12px}
.asset-row{display:flex;gap:12px;align-items:center}
.thumb{width:64px;height:64px;border-radius:10px;border:1.5px dashed #D4D4DE;background:#FAFAFC;
  display:flex;align-items:center;justify-content:center;font-size:22px;color:#B9B9C6;
  flex:0 0 auto;overflow:hidden;position:relative;cursor:pointer}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb.has{border-style:solid;border-color:var(--primary)}
.thumb .del{position:absolute;top:-6px;right:-6px;width:20px;height:20px;border-radius:50%;
  background:var(--err);color:#fff;font-size:13px;line-height:20px;text-align:center;font-weight:700;
  box-shadow:0 1px 4px rgba(0,0,0,.2)}
.asset-info{flex:1;min-width:0}
.asset-label{font-size:14px;font-weight:600;display:flex;align-items:center;gap:4px}
.req{color:var(--err)}
.asset-hint{font-size:12px;color:var(--ink-soft);margin-top:2px}
.asset-status{font-size:12px;color:var(--primary);margin-top:2px}

/* 参考音频 */
.audio-warn{font-size:12px;color:var(--warn);background:#FEF7E7;border:1px solid #FBE3B1;
  border-radius:10px;padding:8px 10px;margin-bottom:10px;line-height:1.45}
.audio-auth{display:flex;gap:8px;align-items:flex-start;font-size:12.5px;color:var(--ink-soft);
  margin-bottom:12px;cursor:pointer;line-height:1.45}
.audio-auth input{margin-top:2px;width:16px;height:16px;accent-color:var(--primary);flex:0 0 auto}
.audio-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.btn-rec{border:none;border-radius:999px;padding:10px 20px;font-size:14px;font-weight:700;color:#fff;
  background:var(--primary);cursor:pointer;box-shadow:0 4px 12px rgba(255,107,53,.28);
  user-select:none;-webkit-user-select:none;touch-action:none}
.btn-rec:disabled{background:#D8D8E0;box-shadow:none}
.btn-rec.recording{background:var(--err);animation:pulse 1.1s ease infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(239,68,68,.5)}50%{box-shadow:0 0 0 8px rgba(239,68,68,0)}}
.audio-time{font-size:13px;color:var(--ink-soft);font-variant-numeric:tabular-nums}
.audio-file{position:relative;overflow:hidden}
.audio-file input{position:absolute;inset:0;opacity:0;cursor:pointer}
.audio-preview{margin-top:12px;border:1px solid var(--line);border-radius:10px;padding:10px;background:#FAFAFC}
.audio-preview audio{width:100%;height:36px}
.audio-preview-meta{font-size:12px;color:var(--ink-soft);margin:6px 0}
.audio-preview-btns{display:flex;gap:10px}
.btn-ghost.danger{border-color:var(--err);color:var(--err)}
.btn-ghost.danger:active{background:#FEF2F2}

/* ⑤ chips */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}
.chips:empty{display:none}
.chip{display:inline-flex;align-items:center;gap:6px;background:#FFF1EA;color:var(--primary-dark);
  border:1px solid #FFD9C7;padding:5px 10px;border-radius:999px;font-size:13px;font-weight:600}
.chip b{cursor:pointer;font-weight:700;opacity:.6}
.chips-input{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;
  font-size:14px;outline:none;background:#FAFAFC}
.chips-input:focus{border-color:var(--primary);background:#fff}

/* ⑥ 旁白 */
.ta{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:14px;
  font-family:inherit;resize:vertical;outline:none;background:#FAFAFC;line-height:1.55}
.ta:focus{border-color:var(--primary);background:#fff}
.row-actions{display:flex;align-items:center;gap:10px;margin-top:8px}
.btn-ghost{border:1.5px solid var(--primary);color:var(--primary);background:#fff;padding:7px 14px;
  border-radius:999px;font-size:13px;font-weight:600;cursor:pointer}
.btn-ghost:active{background:#FFF1EA}
.btn-ghost:disabled{opacity:.5}
.hint-text{font-size:12px;color:var(--ink-soft)}
.hint-text.err{color:var(--err)}

/* ⑦ 预览 */
.preview-wrap{display:flex;gap:12px;align-items:flex-start}
.preview{width:45%;aspect-ratio:9/16;border-radius:12px;overflow:hidden;background:#111;
  position:relative;flex:0 0 auto}
.preview-empty{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:6px;color:#8A8A99;font-size:12px;background:#F1F1F5}
.preview-empty span{padding:0 10px;text-align:center}
.preview-video{width:100%;height:100%;object-fit:cover;background:#000}
.preview-img{width:100%;height:100%;object-fit:cover;display:block}
.badges{display:flex;flex-direction:column;gap:8px;padding-top:4px}
.badge{font-size:12px;color:var(--ink-soft)}
.badge b{color:var(--ink);font-weight:700}
.prompt-box{margin-top:12px;background:#FAFAFC;border:1px solid var(--line);border-radius:10px;padding:8px 12px}
.prompt-box summary{font-size:12px;color:var(--ink-soft);cursor:pointer;font-weight:600}
.prompt-box pre{margin:8px 0 0;font-size:11.5px;line-height:1.6;white-space:pre-wrap;word-break:break-word;
  color:#4B4F63;max-height:220px;overflow:auto;font-family:ui-monospace,Menlo,monospace}

/* ⑧ 底部栏 */
.bottom-bar{position:fixed;bottom:0;left:0;right:0;max-width:480px;margin:0 auto;z-index:30;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 16px calc(12px + var(--safe-b));background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);border-top:1px solid var(--line)}
.cost{font-size:13px;color:var(--ink-soft)}
.cost b{color:var(--primary);font-size:16px}
.btn-primary{flex:0 0 auto;min-width:150px;border:none;border-radius:999px;padding:13px 28px;
  font-size:16px;font-weight:700;color:#fff;background:var(--primary);cursor:pointer;
  box-shadow:0 6px 16px rgba(255,107,53,.32);transition:.15s}
.btn-primary:active{background:var(--primary-dark);transform:scale(.98)}
.btn-primary:disabled{background:#D8D8E0;box-shadow:none;color:#fff;cursor:not-allowed}

/* 登录 */
.overlay{position:fixed;inset:0;z-index:100;background:linear-gradient(160deg,#FFE7DB,#F7F7F9 60%);
  display:flex;align-items:center;justify-content:center;padding:24px}
.overlay.hide{display:none}
.login-card{width:100%;max-width:340px;background:#fff;border-radius:18px;padding:26px 22px;
  box-shadow:0 12px 40px rgba(255,107,53,.15)}
.login-title{font-size:22px;font-weight:800;text-align:center}
.login-sub{font-size:13px;color:var(--ink-soft);text-align:center;margin:8px 0 18px}
.login-input{width:100%;border:1px solid var(--line);border-radius:12px;padding:13px 14px;font-size:15px;
  outline:none;background:#FAFAFC;margin-bottom:12px}
.login-input:focus{border-color:var(--primary);background:#fff}
.login-btn{width:100%;min-width:0}
.login-err{color:var(--err);font-size:12.5px;text-align:center;margin-top:10px;min-height:16px}

/* Toast */
.toast{position:fixed;left:50%;bottom:120px;transform:translateX(-50%) translateY(20px);z-index:200;
  background:rgba(45,49,66,.94);color:#fff;font-size:13.5px;padding:11px 20px;border-radius:999px;
  max-width:88%;text-align:center;opacity:0;pointer-events:none;transition:.25s}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.err{background:rgba(239,68,68,.96)}
.toast.ok{background:rgba(34,197,94,.96)}

/* 时长自动降级提示（带参考音频 + 模板 >15s） */
.duration-note{font-size:11px;line-height:1.5;color:var(--ink-soft);margin-top:8px}