:root {
    --bg: #fafaf9;
    --bg-soft: #f5f5f4;
    --card: #ffffff;
    --border: #e7e5e4;
    --border-strong: #d6d3d1;
    --text: #1c1917;
    --text-2: #57534e;
    --text-3: #a8a29e;
    --accent: #f59e0b;
    --accent-strong: #d97706;
    --accent-soft: #fef3c7;
    --green: #16a34a;
    --green-soft: #dcfce7;
    --red: #dc2626;
    --red-soft: #fee2e2;
    --blue: #2563eb;
    --blue-soft: #dbeafe;
    --radius: 14px;
    --radius-sm: 8px;
    --shadow: 0 1px 2px rgba(28, 25, 23, 0.05), 0 4px 16px rgba(28, 25, 23, 0.06);
    --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
    --sans: "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
  }

  /* ===== Header ===== */
  .header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(250, 250, 249, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
  }
  .header-inner {
    max-width: 1200px; margin: 0 auto;
    padding: 14px 24px;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
  }
  .logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 16px; }
  .logo-badge {
    width: 32px; height: 32px; border-radius: 9px;
    background: var(--text);
    display: flex; align-items: center; justify-content: center;
    color: white; font-size: 16px; font-weight: 700;
    box-shadow: 0 2px 8px rgba(28, 25, 23, 0.18);
  }
  .header-stats { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
  .stat-chip {
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--card); border: 1px solid var(--border);
    padding: 5px 12px; border-radius: 999px;
    font-size: 12.5px; font-weight: 500; color: var(--text-2);
  }
  .stat-chip .num { font-family: var(--mono); font-weight: 600; color: var(--text); }
  .stat-chip.balance .num { color: var(--green); }

  /* ===== Layout ===== */
  .main { max-width: 1200px; margin: 0 auto; padding: 24px; }
  .grid { display: grid; grid-template-columns: 420px 1fr; gap: 20px; align-items: start; }
  @media (max-width: 960px) { .grid { grid-template-columns: 1fr; } }

  .card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
  }
  .card-h {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between; gap: 10px;
    font-weight: 600; font-size: 14px;
  }
  .card-b { padding: 18px; }

  /* ===== Controls ===== */
  .field { margin-bottom: 16px; }
  .field:last-child { margin-bottom: 0; }
  .label {
    display: block; font-size: 12.5px; font-weight: 600;
    color: var(--text-2); margin-bottom: 6px;
  }
  .label .hint { font-weight: 400; color: var(--text-3); margin-left: 4px; }
  select, input[type="text"], textarea {
    width: 100%;
    max-width: 100%;
    font-family: var(--sans); font-size: 13.5px;
    padding: 9px 12px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background: #fff;
    color: var(--text);
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
  }
  select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23888' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
    box-sizing: border-box;
  }
  select:focus, input:focus, textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(28, 25, 23, 0.10);
  }
  textarea { resize: vertical; min-height: 110px; line-height: 1.5; font-family: var(--mono); font-size: 12.5px; }
  .seg { display: flex; gap: 6px; flex-wrap: wrap; }
  .seg-btn {
    flex: 1; min-width: 70px;
    padding: 7px 10px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background: #fff; color: var(--text-2);
    font-size: 12.5px; font-weight: 500; cursor: pointer;
    transition: all 0.15s;
    font-family: var(--sans);
  }
  .seg-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent-strong); }
  .seg-btn.active {
    background: var(--accent-soft); border-color: var(--accent);
    color: var(--accent-strong); font-weight: 600;
  }
  .seg-btn:disabled {
    opacity: 0.38;
    cursor: not-allowed;
    background: #f3f4f6;
    border-color: var(--border);
    color: var(--text-3);
    text-decoration: line-through;
  }

  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    width: 100%;
    padding: 11px 16px;
    border: none; border-radius: var(--radius-sm);
    font-family: var(--sans); font-size: 14px; font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
  }
  .btn-primary { background: var(--text); color: #fff; box-shadow: 0 2px 8px rgba(28, 25, 23, 0.18); }
  .btn-primary:hover:not(:disabled) { filter: brightness(1.06); transform: translateY(-1px); }
  .btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
  .btn-ghost {
    background: #fff; border: 1px solid var(--border-strong); color: var(--text-2);
    font-weight: 500;
  }
  .btn-ghost:hover { border-color: var(--text-3); color: var(--text); }
  .btn-sm { width: auto; padding: 5px 10px; font-size: 12px; }

  .vars-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
  .vars-group-title { grid-column: 1 / -1; margin-top: 7px; padding-top: 9px; border-top: 1px solid var(--line); color: var(--accent); font: 700 10px/1.2 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
  .vars-group-title:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
  .script-field[hidden] { display: none; }
  .script-field .hint { color: var(--accent); }
  @media (max-width: 480px) { .vars-grid { grid-template-columns: 1fr; } }

  /* ===== Result ===== */
  .result-area {
    min-height: 420px;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 16px;
    padding: 24px;
    background: #171713;
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius);
    text-align: center;
    position: relative;
  }
  .result-area.has-image { padding: 12px; background: #111; border-style: solid; }
  .result-img {
    max-width: 100%; max-height: 640px;
    border-radius: 10px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  }
  .placeholder-emoji { font-size: 44px; opacity: 0.35; }
  .placeholder-text { color: #d2cbc0; font-size: 13px; }
  .spinner {
    width: 36px; height: 36px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
  }
  @keyframes spin { to { transform: rotate(360deg); } }
  .status-line { font-size: 13px; color: var(--text-2); display: flex; align-items: center; gap: 8px; }
  .error-box {
    background: var(--red-soft); color: var(--red);
    border-radius: var(--radius-sm);
    padding: 10px 14px; font-size: 13px; width: 100%; text-align: left;
  }

  /* ===== Cost ===== */
  .cost-row {
    display: flex; align-items: center; justify-content: space-between;
    padding: 8px 0; border-bottom: 1px dashed var(--border);
    font-size: 13px;
  }
  .cost-row:last-child { border-bottom: none; }
  .cost-row .k { color: var(--text-2); }
  .cost-row .v { font-family: var(--mono); font-weight: 600; }
  .cost-row .v.green { color: var(--green); }
  .cost-row .v.orange { color: var(--accent-strong); }
  .partial-result-row { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 12px 14px; border-top: 1px solid var(--border); color: var(--text-2); font-size: 12px; }
  .partial-result-row strong { color: var(--accent-strong); }
  .partial-result-row .btn { flex: 0 0 auto; }

  /* ===== History ===== */
  .history-list { display: flex; flex-direction: column; }
  .h-item {
    display: flex; gap: 14px; padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    align-items: flex-start;
    transition: background 0.12s;
  }
  .h-item:hover { background: var(--bg-soft); }
  .h-item:last-child { border-bottom: none; }
  .h-thumb {
    width: 64px; height: 80px; flex-shrink: 0;
    border-radius: var(--radius-sm);
    object-fit: cover; background: var(--bg-soft);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: transform 0.15s;
  }
  .h-thumb:hover { transform: scale(1.04); }
  .h-body { flex: 1; min-width: 0; }
  .h-top { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; flex-wrap: wrap; }
  .h-tag {
    font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 999px;
  }
  .h-tag.cat { background: var(--blue-soft); color: var(--blue); }
  .h-tag.prod { background: var(--accent-soft); color: var(--accent-strong); }
  .h-tag.model { background: var(--bg-soft); color: var(--text-2); font-family: var(--mono); border: 1px solid var(--border); }
  .h-prompt {
    font-size: 12.5px; color: var(--text-2);
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
    margin-bottom: 6px;
  }
  .h-meta { font-size: 11.5px; color: var(--text-3); display: flex; gap: 12px; flex-wrap: wrap; }
  .h-cost { font-family: var(--mono); color: var(--green); font-weight: 600; }
  .h-empty { padding: 40px; text-align: center; color: var(--text-3); font-size: 13px; }

  .toast {
    position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
    background: var(--text); color: #fff;
    padding: 10px 20px; border-radius: 999px; font-size: 13px; font-weight: 500;
    opacity: 0; pointer-events: none; transition: all 0.25s; z-index: 100;
    box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  }
  .toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
  .toast.error { background: var(--red); }

  .section-title { font-size: 13px; font-weight: 700; color: var(--text-2); text-transform: uppercase; letter-spacing: 0.05em; margin: 20px 0 10px; }
  .section-title:first-child { margin-top: 0; }
  .footer { text-align: center; padding: 32px 0 40px; color: var(--text-3); font-size: 12px; }

  /* ============================================================
     Studio System v3 — 电商工作台 / 暗房画布 / 对话式生成记录
     ============================================================ */
  :root {
    --bg: #ececea;
    --bg-soft: #e4e4e0;
    --card: #f8f8f6;
    --card-strong: #ffffff;
    --border: #d0d0cb;
    --border-strong: #bebeb7;
    --text: #191915;
    --text-2: #555550;
    --text-3: #696963;
    --accent: #c96b3c;
    --accent-strong: #994621;
    --accent-soft: #f1ded2;
    --green: #2e745f;
    --green-soft: #d9ebe5;
    --red: #a63f32;
    --red-soft: #f5dfda;
    --blue: #426477;
    --blue-soft: #dce7eb;
    --radius: 12px;
    --radius-sm: 7px;
    --shadow: 0 1px 0 rgba(255,255,255,.78) inset, 0 14px 34px rgba(52, 43, 30, .07);
    --shadow-lg: 0 1px 0 rgba(255,255,255,.9) inset, 0 20px 50px rgba(52, 43, 30, .10);
    --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
    --sans: "Manrope", "PingFang SC", "Microsoft YaHei", sans-serif;
    --ease: cubic-bezier(.2, .8, .2, 1);
  }

  html { scroll-behavior: smooth; }
  body {
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    letter-spacing: -0.008em;
  }
  body::before {
    content: "";
    position: fixed;
    inset: 0 0 auto;
    height: 240px;
    pointer-events: none;
    background: linear-gradient(180deg, rgba(255,255,255,.48), transparent);
    z-index: -1;
  }

  .header {
    background: rgba(236, 236, 234, .9);
    border-bottom: 1px solid rgba(128, 116, 97, .25);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: none;
  }
  .header-inner {
    max-width: 1440px;
    min-height: 72px;
    padding: 12px 32px;
  }
  .logo { gap: 13px; font-size: 16px; }
  .logo-badge {
    width: 38px;
    height: 38px;
    display: grid;
    grid-template-columns: repeat(2, 8px);
    grid-template-rows: repeat(2, 8px);
    align-content: center;
    justify-content: center;
    gap: 3px;
    border-radius: 5px;
    background: var(--text);
    box-shadow: 4px 4px 0 var(--accent);
  }
  .logo-badge span { background: #f7f3ea; border-radius: 1px; }
  .logo-badge span:last-child { background: var(--accent); }
  .logo-copy { display: grid; gap: 1px; }
  .logo-title { font-size: 17px; font-weight: 700; letter-spacing: .01em; }
  .logo-subtitle {
    color: var(--text-3);
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: .12em;
  }
  .header-stats { gap: 0; }
  .workspace-status {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    margin-right: 14px;
    color: var(--text-3);
    font-size: 12px;
  }
  .workspace-status::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 0 4px rgba(46,116,95,.10);
  }
  .stat-chip {
    min-height: 32px;
    gap: 7px;
    padding: 0 14px;
    border: 0;
    border-left: 1px solid var(--border);
    border-radius: 0;
    background: transparent;
    color: var(--text-3);
    font-size: 12px;
  }
  .stat-chip:last-child { padding-right: 0; }
  .stat-chip .num { color: var(--text); font-size: 12px; }

  .main { max-width: 1440px; padding: 26px 32px 0; }
  .grid { grid-template-columns: 430px minmax(0, 1fr); gap: 24px; }
  .grid > *, .card, .card-b, .field { min-width: 0; }
  .card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--card);
    box-shadow: var(--shadow);
  }
  .card-h {
    min-height: 64px;
    padding: 13px 18px;
    border-bottom: 1px solid var(--border);
    background: rgba(255,255,255,.2);
  }
  .card-heading { display: grid; gap: 2px; }
  .card-index {
    color: var(--accent-strong);
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .13em;
  }
  .card-title { font-size: 16px; font-weight: 700; letter-spacing: .015em; }
  .card-note, .result-meta {
    max-width: 55%;
    color: var(--text-3);
    font-size: 12px;
    font-weight: 400;
    text-align: right;
  }
  .card-b { padding: 20px; }

  .field { margin-bottom: 18px; }
  .label {
    margin-bottom: 7px;
    color: var(--text-2);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .015em;
  }
  .label .hint { color: var(--text-3); font-size: 12px; }
  select, input[type="text"], textarea {
    min-width: 0;
    max-width: 100%;
    min-height: 42px;
    padding: 10px 12px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,.58);
    color: var(--text);
    font-family: var(--sans);
    font-size: 14px;
    transition: background .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease);
  }
  select:hover, input[type="text"]:hover, textarea:hover { background: #fff; border-color: #aea596; }
  select:focus, input:focus, textarea:focus {
    border-color: var(--accent);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(25,25,21,.10);
  }
  textarea {
    min-height: 142px;
    padding: 12px 13px;
    font-family: var(--mono);
    font-size: 12px;
    line-height: 1.72;
    overflow: hidden;
    resize: none;
    transition: height .15s var(--ease), background .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease);
  }
  .estimate-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    padding: 10px 14px;
    border: 1px dashed var(--border-strong);
    border-radius: 7px;
    background: rgba(255,255,255,.5);
    color: var(--text-3);
    font-size: 12px;
  }
  .estimate-row .estimate-val {
    color: var(--accent-strong);
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 600;
  }
  .btn-wrap { display: flex; gap: 10px; }
  .btn-wrap .btn { flex: 1; }
  .btn-ghost {
    min-height: 38px;
    padding: 8px 14px;
    border: 1px solid var(--border-strong);
    border-radius: 7px;
    background: rgba(255,255,255,.72);
    color: var(--text-2);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all .18s var(--ease);
  }
  .btn-ghost:hover { background: #fff; color: var(--text); border-color: var(--accent); box-shadow: 0 3px 10px rgba(25,25,21,.08); }
  .h-dl {
    min-height: 30px;
    align-self: flex-start;
    padding: 4px 10px;
    font-size: 11px;
    background: #fff;
  }
  .history-result-copy .h-dl { margin-top: 2px; }
  .result-actions {
    position: absolute;
    right: 26px;
    bottom: 26px;
    display: flex;
    gap: 8px;
    z-index: 2;
  }
  .result-area.has-image .result-actions .btn-ghost {
    border-color: rgba(255,255,255,.22);
    background: rgba(18,18,15,.72);
    color: #f3eee4;
    backdrop-filter: blur(8px);
  }
  .result-area.has-image .result-actions .btn-ghost:hover {
    border-color: var(--accent);
    background: rgba(18,18,15,.92);
    color: #fff;
  }
  .seg {
    gap: 3px;
    padding: 3px;
    border: 1px solid var(--border);
    border-radius: 9px;
    background: var(--bg-soft);
  }
  .seg-btn {
    min-height: 36px;
    padding: 7px 10px;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: var(--text-2);
    font-size: 12px;
    transition: color .18s var(--ease), background .18s var(--ease), box-shadow .18s var(--ease), transform .18s var(--ease);
  }
  .seg-btn:hover { border-color: transparent; background: rgba(255,255,255,.58); color: var(--text); }
  .seg-btn.active {
    border-color: transparent;
    background: var(--text);
    color: #fff;
    box-shadow: 0 3px 9px rgba(25,25,21,.15);
  }
  .seg-btn:active { transform: scale(.985); }
  .vars-grid { gap: 9px; }

  .btn { min-height: 48px; border-radius: 7px; transition: all .22s var(--ease); }
  .btn-primary {
    position: relative;
    overflow: hidden;
    background: var(--text);
    color: #fff;
    box-shadow: 0 7px 18px rgba(25,25,21,.16);
    font-size: 14px;
    letter-spacing: .02em;
  }
  /* 生成按钮是 grid 布局，::before 的星星会独占一整行（老板：「四角星单独占一行太浪费空间」）。
     让它绝对定位到标题左侧，跟文字同排，不再吃掉一行高度。 */
  /* 四角星去掉了（老板 2026-08-13：「位置如果解决不了，就去掉吧」）。
     它原本是 ::before 绝对定位 ＋ 写死 translateX(-4.4em)：按钮文字一变长短就错位，
     而这个按钮的文字本来就会变（"生成图片" / "正在生成第 3/10 张…"）。
     **拿固定偏移去对齐会变长的文字，是治不好的做法**，不如不要。 */
  #generateBtn .btn-label-row { justify-content: center; }
  .btn-primary::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(105deg, transparent 35%, rgba(255,255,255,.16) 50%, transparent 65%);
    transform: translateX(-120%);
    transition: transform .55s var(--ease);
  }
  .btn-primary:hover:not(:disabled) {
    background: #2a2923;
    filter: none;
    transform: translateY(-1px);
    box-shadow: 0 12px 26px rgba(25,25,21,.20);
  }
  .btn-primary:hover:not(:disabled)::after { transform: translateX(120%); }
  .btn-primary:active:not(:disabled) { transform: translateY(0); }
  .btn-primary:disabled { opacity: .62; }

  .result-card { background: #f8f6f1; }
  .result-card .card-b { padding: 16px; }
  .result-area {
    position: relative;
    min-height: 550px;
    overflow: hidden;
    border: 1px solid #2f2e28;
    border-radius: 8px;
    background:
      linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px),
      #171713;
    background-size: 32px 32px;
    color: #f3eee4;
    transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
  }
  .result-area::before,
  .result-area::after {
    content: "";
    position: absolute;
    width: 28px;
    height: 28px;
    opacity: .48;
    pointer-events: none;
  }
  .result-area::before { inset: 16px auto auto 16px; border-top: 1px solid var(--accent); border-left: 1px solid var(--accent); }
  .result-area::after { inset: auto 16px 16px auto; border-right: 1px solid var(--accent); border-bottom: 1px solid var(--accent); }
  .result-area:hover { border-color: #4d4a40; }
  .result-area.has-image { padding: 12px; border-style: solid; background: #12120f; }
  .result-img { max-height: 690px; border-radius: 4px; box-shadow: 0 16px 42px rgba(0,0,0,.44); }
  .placeholder-mark {
    position: relative;
    width: 78px;
    height: 88px;
    margin-bottom: 2px;
    border: 1px solid rgba(239,230,215,.22);
  }
  .placeholder-mark::before,
  .placeholder-mark::after {
    content: "";
    position: absolute;
    inset: 9px -10px -9px 9px;
    border: 1px solid rgba(239,230,215,.12);
  }
  .placeholder-mark::after {
    inset: 20px 17px 19px;
    border: 0;
    background: linear-gradient(135deg, transparent 46%, var(--accent) 47% 53%, transparent 54%);
    opacity: .9;
  }
  .placeholder-kicker {
    color: #d98b62;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: .18em;
    text-transform: uppercase;
  }
  .placeholder-text { color: #c8c1b5; font-size: 13px; }
  .result-area.is-loading {
    border-color: rgba(201,107,60,.62);
    box-shadow: 0 0 0 1px rgba(255,255,255,.08) inset;
  }
  .result-area.is-loading > * { position: relative; z-index: 1; }
  .result-area.is-loading::after {
    inset: 0;
    width: auto;
    height: auto;
    border: 0;
    opacity: 1;
    background: linear-gradient(110deg, transparent 32%, rgba(201,107,60,.10) 46%, rgba(244,208,188,.15) 50%, rgba(201,107,60,.10) 54%, transparent 68%);
    animation: studioBreath 1.8s ease-in-out infinite alternate;
  }
  .spinner {
    width: 42px;
    height: 42px;
    border: 1px solid rgba(255,255,255,.15);
    border-top-color: var(--accent);
    border-right-color: #edba9e;
    animation: spin 1.05s linear infinite;
  }
  .status-line {
    padding: 8px 12px;
    border: 1px solid rgba(255,255,255,.08);
    border-radius: 5px;
    background: rgba(12,12,10,.66);
    color: #c8c0b4;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: .03em;
  }
  .error-box {
    max-width: 520px;
    padding: 14px 16px;
    border: 1px solid rgba(197,92,75,.32);
    border-radius: 7px;
    background: rgba(99,31,24,.28);
    color: #f2b6ac;
  }
  @keyframes studioBreath { from { opacity: .42; } to { opacity: .9; } }

  #costPanel:not(:empty) {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;
    margin-top: 0 !important;
    border: 1px solid var(--border);
    border-top: 0;
    border-radius: 0 0 8px 8px;
    background: #fff;
  }
  .cost-row { padding: 12px 14px; border-bottom: 0; }
  .cost-row:nth-child(2) { border-left: 1px solid var(--border); }
  .cost-row:last-child { grid-column: 1 / -1; border-top: 1px solid var(--border); align-items: flex-start; gap: 18px; }
  .cost-row .k { flex: 0 0 auto; color: var(--text-3); font-size: 12px; }
  .cost-row .v { color: var(--text); font-size: 12px; text-align: right; }
  .cost-row .v.orange { color: var(--accent-strong); }

  .history-card { margin-top: 24px; }
  .history-list { gap: 0; padding: 0 18px; }
  .h-item {
    display: grid;
    gap: 12px;
    padding: 20px 0;
    border: 0;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
    background: transparent;
    transition: none;
  }
  .h-item:last-child { border-bottom: 0; }
  .h-item:hover { background: transparent; transform: none; box-shadow: none; }
  .history-turn { display: grid; grid-template-columns: 32px minmax(0, 1fr); gap: 10px; align-items: start; }
  .history-role {
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    border: 1px solid var(--border-strong);
    border-radius: 50%;
    background: #fff;
    color: var(--text-2);
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 600;
  }
  .assistant-turn { position: relative; }
  .assistant-turn::before {
    content: "";
    position: absolute;
    top: -14px;
    bottom: calc(100% - 2px);
    left: 15px;
    border-left: 1px solid var(--border-strong);
  }
  .assistant-turn .history-role { border-color: var(--text); background: var(--text); color: #fff; }
  .history-content { min-width: 0; }
  .h-top { margin: 1px 0 8px; gap: 6px; }
  .h-tag {
    padding: 3px 7px;
    border: 1px solid transparent;
    border-radius: 4px;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: .02em;
  }
  .h-tag.cat { border-color: #c7d8de; background: var(--blue-soft); color: #355364; }
  .h-tag.prod { border-color: #e8c8b7; background: var(--accent-soft); color: var(--accent-strong); }
  .h-tag.model { border-color: var(--border); background: #ecece8; color: var(--text-2); }
  .h-prompt {
    max-width: 88%;
    display: -webkit-box;
    margin: 0;
    padding: 10px 12px;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 4px 10px 10px 10px;
    background: #fff;
    color: var(--text-2);
    font-size: 14px;
    line-height: 1.65;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
  }
  .history-result {
    display: grid;
    grid-template-columns: 126px minmax(0, 1fr);
    gap: 14px;
    width: min(100%, 520px);
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 10px 4px 10px 10px;
    background: #e9e9e5;
  }
  .h-thumb {
    width: 126px;
    height: 158px;
    border: 0;
    border-radius: 5px;
    background: #d9d2c6;
    filter: saturate(.95);
    transition: filter .2s var(--ease), transform .2s var(--ease);
  }
  .h-thumb:hover { filter: saturate(1.08); transform: scale(1.015); }
  .history-result-copy { display: flex; min-width: 0; flex-direction: column; justify-content: space-between; padding: 3px 3px 2px 0; }
  .history-result-label { color: var(--text); font-size: 12px; font-weight: 700; }
  .history-result-label::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 7px; border-radius: 50%; background: var(--green); }
  .h-meta { display: grid; gap: 5px; color: var(--text-3); font-family: var(--mono); font-size: 12px; }
  .h-cost { color: var(--green); }
  .h-empty { padding: 52px 20px; }
  .h-empty::before { content: "—"; display: block; margin-bottom: 7px; color: var(--accent); font-family: var(--mono); }

  .toast {
    bottom: 26px;
    padding: 11px 16px;
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 7px;
    background: var(--text);
    box-shadow: 0 16px 40px rgba(25,25,21,.26);
    font-size: 12px;
  }
  .toast.error { background: #7e3027; }
  .footer { padding: 28px 0 32px; color: var(--text-3); font-family: var(--mono); font-size: 12px; letter-spacing: .05em; }

  button:focus-visible, select:focus-visible, input:focus-visible, textarea:focus-visible, .h-thumb:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }
  ::selection { background: var(--accent-soft); color: var(--text); }
  ::-webkit-scrollbar { width: 10px; height: 10px; }
  ::-webkit-scrollbar-track { background: transparent; }
  ::-webkit-scrollbar-thumb { border: 3px solid transparent; border-radius: 999px; background: #bcb4a7; background-clip: content-box; }

  @media (max-width: 1100px) {
    .grid { grid-template-columns: 390px minmax(0, 1fr); gap: 18px; }
    .main { padding-inline: 20px; }
    .header-inner { padding-inline: 20px; }
    .workspace-status { display: none; }
    .result-area { min-height: 500px; }
  }
  @media (max-width: 900px) {
    .grid { grid-template-columns: minmax(0, 1fr); }
    .result-area { min-height: 540px; }
    .header-inner { align-items: flex-start; }
    .header-stats { justify-content: flex-end; }
  }
  @media (max-width: 640px) {
    .header-inner { min-height: auto; padding: 11px 14px; flex-direction: column; align-items: stretch; }
    .logo-subtitle { display: none; }
    .logo-badge { width: 34px; height: 34px; }
    .header-stats { width: 100%; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--border); padding-top: 8px; }
    .stat-chip { min-width: 0; justify-content: center; overflow: hidden; padding: 0 4px; white-space: nowrap; }
    .stat-chip.balance > span:last-child { display: none; }
    .stat-chip:first-of-type { border-left: 0; }
    .main { padding: 14px 12px 0; }
    .card-h { min-height: 58px; padding: 11px 14px; }
    .card-b { padding: 14px; }
    .card-note, .result-meta { max-width: 48%; font-size: 11px; }
    .vars-grid { grid-template-columns: 1fr; }
    .result-card .card-b { padding: 8px; }
    .result-area { min-height: 430px; border-radius: 6px; }
    #costPanel:not(:empty) { grid-template-columns: 1fr; }
    .cost-row:nth-child(2) { border-top: 1px solid var(--border); border-left: 0; }
    .cost-row:last-child { grid-column: auto; }
    .history-card { margin-top: 14px; }
    .history-list { padding-inline: 13px; }
    .h-prompt { max-width: 100%; }
    .history-result { grid-template-columns: 94px minmax(0, 1fr); }
    .h-thumb { width: 94px; height: 118px; }
  }
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  }

  /* ============================================================
     Playground v4 — task gallery / creation dock / settings drawer
     ============================================================ */
  :root {
    color-scheme: light;
    --bg: #f3f4f6;
    --bg-soft: #eaecf0;
    --card: rgba(255, 255, 255, .82);
    --card-strong: #ffffff;
    --border: rgba(30, 35, 48, .11);
    --border-strong: rgba(30, 35, 48, .19);
    --text: #15171c;
    --text-2: #555b68;
    --text-3: #7a8190;
    --accent: #7657f6;
    --accent-strong: #5f3fe0;
    --accent-soft: #ece8ff;
    --green: #14845f;
    --green-soft: #dff5ec;
    --red: #c44343;
    --red-soft: #ffebeb;
    --radius: 20px;
    --radius-sm: 12px;
    --shadow: 0 1px 2px rgba(20, 23, 30, .03), 0 18px 60px rgba(26, 31, 44, .08);
    --shadow-lg: 0 24px 80px rgba(22, 25, 35, .16);
  }
  html[data-theme="dark"] {
    color-scheme: dark;
    --bg: #0d0e12;
    --bg-soft: #171920;
    --card: rgba(24, 26, 34, .86);
    --card-strong: #1b1d25;
    --border: rgba(255, 255, 255, .09);
    --border-strong: rgba(255, 255, 255, .16);
    --text: #f4f5f7;
    --text-2: #b5bac5;
    --text-3: #858b98;
    --accent: #9a82ff;
    --accent-strong: #b7a7ff;
    --accent-soft: #2d2747;
    --green: #53c79c;
    --green-soft: #173a2e;
    --red: #ff817b;
    --red-soft: #452322;
    --shadow: 0 1px 2px rgba(0,0,0,.18), 0 24px 64px rgba(0,0,0,.24);
    --shadow-lg: 0 28px 90px rgba(0,0,0,.44);
  }
  body {
    min-height: 100vh;
    padding-bottom: 250px;
    background:
      radial-gradient(circle at 18% -10%, rgba(118, 87, 246, .11), transparent 33rem),
      radial-gradient(circle at 92% 20%, rgba(40, 177, 160, .07), transparent 28rem),
      var(--bg);
    color: var(--text);
  }
  body::before { display: none; }
  body.drawer-open { overflow: hidden; }

  .header {
    background: color-mix(in srgb, var(--bg) 80%, transparent);
    border-color: var(--border);
    backdrop-filter: blur(22px) saturate(1.2);
    -webkit-backdrop-filter: blur(22px) saturate(1.2);
  }
  .header-inner { max-width: 1520px; min-height: 66px; padding: 10px 28px; }
  .logo { gap: 12px; }
  .logo-badge {
    width: 36px; height: 36px; gap: 3px; border-radius: 11px;
    background: linear-gradient(145deg, #242733, #101116);
    box-shadow: 0 7px 18px rgba(18, 21, 29, .18), inset 0 1px rgba(255,255,255,.12);
  }
  .logo-badge span { background: #fff; border-radius: 2px; opacity: .9; }
  .logo-badge span:last-child { background: #a994ff; }
  .logo-title { font-size: 15px; }
  .logo-subtitle { color: var(--text-3); font-size: 9px; letter-spacing: .18em; }
  .header-stats { display: flex; align-items: center; gap: 8px; }
  .workspace-status { margin-right: 4px; color: var(--text-3); }
  .stat-chip {
    min-height: 34px; padding: 0 12px; border: 1px solid var(--border);
    border-radius: 10px; background: var(--card); color: var(--text-3);
  }
  .stat-chip:last-child { padding-right: 12px; }
  .icon-btn {
    width: 36px; height: 36px; display: inline-grid; place-items: center;
    border: 1px solid var(--border); border-radius: 10px;
    background: var(--card); color: var(--text-2); cursor: pointer;
    font: 600 18px/1 var(--sans); transition: .2s var(--ease);
  }
  .icon-btn:hover { border-color: var(--border-strong); color: var(--text); transform: translateY(-1px); }

  .main { max-width: 1520px; padding: 42px 28px 0; }
  .gallery-shell { width: min(100%, 1280px); margin: 0 auto; }
  .eyebrow, .card-index {
    display: block; margin-bottom: 6px; color: var(--accent-strong);
    font-family: var(--mono); font-size: 10px; font-weight: 700; letter-spacing: .14em;
  }
  /* 原来「创作画廊」是一整条独立标题栏，白占约 120px 高。老板要求并进结果卡片的头部。 */
  .result-head-title { min-width: 0; }
  .result-head-title h1 { font-size: 20px; line-height: 1.15; letter-spacing: -.03em; white-space: nowrap; }
  .result-head-title .card-index { margin-bottom: 3px; }
  .context-bar { display: flex; align-items: center; justify-content: flex-end; gap: 8px; flex-wrap: wrap; margin-left: auto; }
  .context-chip {
    min-height: 38px; display: inline-flex; align-items: center; gap: 7px;
    padding: 0 12px; border: 1px solid var(--border); border-radius: 11px;
    background: var(--card); color: var(--text-2); font-size: 12px; font-weight: 600;
    backdrop-filter: blur(14px);
  }
  .context-chip i { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px color-mix(in srgb, var(--green) 13%, transparent); }
  .btn-config { width: auto; min-height: 38px; padding: 0 14px; background: var(--accent); border-color: var(--accent); color: #fff; }
  .btn-config:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

  .result-card, .history-card {
    overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius);
    background: var(--card); box-shadow: var(--shadow); backdrop-filter: blur(18px);
  }
  .result-head, .section-head {
    min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 14px;
    padding: 16px 20px; border-bottom: 1px solid var(--border); flex-wrap: wrap;
  }
  .result-head h2, .section-head h2, .drawer-head h2 { font-size: 16px; line-height: 1.2; letter-spacing: -.02em; }
  .result-head .card-index, .section-head .card-index, .drawer-head .card-index { margin-bottom: 3px; }
  .result-meta, .card-note { color: var(--text-3); font: 500 11px/1.4 var(--mono); text-align: right; }
  .result-stage { padding: 12px; }
  .result-area {
    min-height: min(62vh, 720px); overflow: hidden; border: 0; border-radius: 14px;
    background:
      radial-gradient(circle at 50% 42%, rgba(154, 130, 255, .10), transparent 34%),
      linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px),
      #101117;
    background-size: auto, 36px 36px, 36px 36px, auto;
  }
  .result-area::before, .result-area::after { display: none; }
  .result-area:hover { border-color: transparent; }
  .result-area.has-image { padding: 14px; border-radius: 14px; background: #0b0c10; }
  .result-img { max-height: min(74vh, 820px); border-radius: 9px; }
  .placeholder-mark { width: 72px; height: 82px; border-color: rgba(255,255,255,.19); transform: rotate(-2deg); }
  .placeholder-mark::before { border-color: rgba(255,255,255,.09); }
  .placeholder-mark::after { background: linear-gradient(135deg, transparent 46%, #9a82ff 47% 53%, transparent 54%); }
  .placeholder-kicker { color: #a994ff; font-size: 10px; }
  .placeholder-text { color: #969cab; }
  .result-actions { right: 26px; bottom: 26px; }
  #costPanel:not(:empty) {
    margin-top: 10px !important; border: 1px solid var(--border); border-radius: 12px;
    background: var(--card-strong);
  }
  .cost-row:nth-child(2), .cost-row:last-child { border-color: var(--border); }

  .history-card { margin-top: 22px; }
  .history-list {
    display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px; padding: 12px;
  }
  .h-item {
    position: relative; display: flex; flex-direction: column; gap: 0; min-width: 0;
    padding: 0; overflow: hidden; border: 1px solid var(--border); border-radius: 15px;
    background: var(--card-strong); transition: transform .22s var(--ease), border-color .22s var(--ease), box-shadow .22s var(--ease);
  }
  .h-item:last-child { border-bottom: 1px solid var(--border); }
  .h-item:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--accent) 38%, var(--border)); box-shadow: 0 18px 44px rgba(24, 28, 39, .12); }
  .task-image-wrap { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--bg-soft); }
  .history-preview-button { display: block; width: 100%; height: 100%; padding: 0; border: 0; background: transparent; cursor: zoom-in; }
  .h-thumb { width: 100%; height: 100%; border: 0; border-radius: 0; object-fit: cover; transition: transform .5s var(--ease); }
  .h-thumb:hover { transform: scale(1.025); }
  .history-image-fallback {
    position: absolute; inset: 0; display: grid; place-content: center; gap: 6px;
    padding: 20px; background: var(--bg-soft); color: var(--text-3); text-align: center;
  }
  .history-image-fallback[hidden] { display: none; }
  .history-image-fallback strong { color: var(--text-2); font-size: 13px; }
  .history-image-fallback small { font-size: 10px; line-height: 1.5; }
  .h-item.image-unavailable .history-preview-button { cursor: default; }
  .h-item.image-unavailable .h-actions .btn { opacity: .46; cursor: not-allowed; }
  .task-status {
    position: absolute; top: 10px; left: 10px; display: inline-flex; align-items: center; gap: 6px;
    padding: 5px 8px; border: 1px solid rgba(255,255,255,.18); border-radius: 8px;
    background: rgba(15,16,21,.68); color: #fff; backdrop-filter: blur(9px);
    font: 600 10px/1 var(--mono);
  }
  .task-status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #59d7a9; }
  .task-body { display: flex; flex: 1; flex-direction: column; gap: 11px; padding: 14px; }
  .h-top { margin: 0; gap: 5px; }
  .h-tag { padding: 3px 7px; border-color: var(--border) !important; border-radius: 7px; background: var(--bg-soft) !important; color: var(--text-2) !important; font-size: 9px; }
  .h-tag.model { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .h-prompt { max-width: none; min-height: 48px; margin: 0; padding: 0; border: 0; border-radius: 0; background: transparent; color: var(--text-2); font-size: 12px; line-height: 1.55; -webkit-line-clamp: 2; }
  .task-foot { display: flex; align-items: flex-end; justify-content: space-between; gap: 8px; margin-top: auto; padding-top: 10px; border-top: 1px solid var(--border); }
  .h-meta { gap: 3px; color: var(--text-3); font-size: 9px; }
  .h-cost { color: var(--green); }
  .h-dl { width: auto; min-height: 30px; padding: 4px 9px; border-radius: 8px; background: var(--bg-soft); font-size: 10px; }
  .h-empty { grid-column: 1 / -1; padding: 64px 20px; color: var(--text-3); }

  .drawer-backdrop {
    position: fixed; inset: 0; z-index: 80; background: rgba(8, 9, 13, .4);
    opacity: 0; pointer-events: none; backdrop-filter: blur(3px); transition: opacity .25s var(--ease);
  }
  .config-drawer {
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 90;
    width: min(460px, calc(100vw - 28px)); overflow: auto;
    border-left: 1px solid var(--border); background: var(--card-strong); box-shadow: var(--shadow-lg);
    transform: translateX(102%); transition: transform .3s var(--ease);
  }
  body.drawer-open .drawer-backdrop { opacity: 1; pointer-events: auto; }
  body.drawer-open .config-drawer { transform: translateX(0); }
  .drawer-head {
    position: sticky; top: 0; z-index: 2; min-height: 80px;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 18px 20px; border-bottom: 1px solid var(--border);
    background: color-mix(in srgb, var(--card-strong) 90%, transparent); backdrop-filter: blur(18px);
  }
  .drawer-body { padding: 22px 20px 120px; }
  .drawer-body .field { margin-bottom: 22px; }
  .drawer-body .label { color: var(--text-2); }
  .drawer-divider { height: 1px; margin: 6px 0 22px; background: var(--border); }
  select, input[type="text"], textarea { border-color: var(--border-strong); background: var(--card-strong); color: var(--text); }
  select:hover, input[type="text"]:hover, textarea:hover, select:focus, input:focus, textarea:focus { background: var(--card-strong); }
  .seg { border-color: var(--border); background: var(--bg-soft); }
  .seg-btn { color: var(--text-2); }
  .seg-btn:hover { background: color-mix(in srgb, var(--card-strong) 76%, transparent); color: var(--text); }
  .seg-btn.active { background: var(--accent); color: #fff; }
  .seg-btn:disabled { color: var(--text-3); background: transparent; }

  .creation-dock {
    position: fixed; z-index: 70; left: 50%; bottom: 18px; width: min(1080px, calc(100vw - 32px));
    transform: translateX(-50%); pointer-events: none;
  }
  .composer {
    pointer-events: auto; padding: 10px; border: 1px solid var(--border-strong); border-radius: 20px;
    background: color-mix(in srgb, var(--card-strong) 90%, transparent);
    box-shadow: 0 25px 80px rgba(18, 21, 30, .22), inset 0 1px rgba(255,255,255,.15);
    backdrop-filter: blur(24px) saturate(1.25); -webkit-backdrop-filter: blur(24px) saturate(1.25);
  }
  .prompt-field { padding: 3px 4px 8px; }
  .prompt-field label { display: flex; justify-content: space-between; padding: 0 5px; color: var(--text-3); font-size: 10px; font-weight: 700; letter-spacing: .04em; }
  .prompt-field textarea {
    min-height: 54px; max-height: 88px; margin-top: 2px; padding: 8px 5px 4px;
    border: 0; background: transparent !important; box-shadow: none !important;
    font-family: var(--sans); font-size: 14px; line-height: 1.55; resize: none;
  }
  .composer-bottom { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; }
  .composer-controls { display: flex; align-items: flex-end; gap: 8px; min-width: 0; }
  .compact-control {
    display: grid; gap: 3px; min-width: 0; padding: 7px 9px;
    border: 1px solid var(--border); border-radius: 12px; background: var(--bg-soft);
  }
  .compact-control > span { color: var(--text-3); font-size: 9px; font-weight: 700; letter-spacing: .05em; }
  .compact-control small { color: var(--text-3); font-size: 8px; font-weight: 500; }
  .model-control { width: 242px; }
  .model-control input { min-height: 20px; padding: 0; border: 0; background: transparent !important; box-shadow: none !important; font: 600 11px/1.2 var(--mono); }
  .size-control { width: 210px; }
  .size-control .seg { gap: 2px; padding: 0; border: 0; background: transparent; }
  .size-control .seg-btn { min-width: 0; min-height: 23px; padding: 2px 7px; border-radius: 7px; font-size: 9px; }
  .mobile-config-btn { display: none; width: auto; min-height: 48px; padding: 0 12px; background: var(--bg-soft); }
  .generate-cluster { display: flex; align-items: stretch; gap: 8px; }
  .estimate-row {
    min-width: 128px; display: grid; align-content: center; gap: 2px; margin: 0; padding: 7px 10px;
    border: 1px solid var(--border); border-radius: 12px; background: var(--bg-soft); color: var(--text-3); line-height: 1.2;
  }
  .estimate-row .estimate-val { font-size: 11px; }
  .generate-cluster .btn-primary { width: 148px; min-height: 54px; border-radius: 13px; background: linear-gradient(135deg, #7657f6, #6042df); box-shadow: 0 10px 28px rgba(96, 66, 223, .28); }
  .generate-cluster .btn-primary:hover:not(:disabled) { background: linear-gradient(135deg, #8469fb, #6849e8); box-shadow: 0 14px 34px rgba(96,66,223,.38); }
  .toast { z-index: 120; bottom: 224px; border-radius: 10px; }
  .footer { padding: 26px 0 10px; }

  @media (max-width: 980px) {
    body { padding-bottom: 290px; }
    .main { padding-inline: 18px; }
    .header-inner { padding-inline: 18px; }
    .history-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .composer-bottom { align-items: stretch; }
    .composer-controls { flex-wrap: wrap; flex: 1; }
    .model-control { width: min(100%, 280px); flex: 1; }
    .size-control { width: 220px; }
    .generate-cluster { flex-direction: column; }
    .estimate-row { display: flex; min-height: 35px; justify-content: space-between; }
    .generate-cluster .btn-primary { min-height: 50px; }
  }
  @media (max-width: 700px) {
    body { padding-bottom: 338px; }
    .header-inner { min-height: 58px; flex-direction: row; align-items: center; padding: 9px 12px; }
    .logo-subtitle, .workspace-status { display: none; }
    .header-stats { width: auto; display: flex; border: 0; padding: 0; }
    .stat-chip { display: none; }
    .icon-btn { width: 34px; height: 34px; }
    .main { padding: 24px 12px 0; }
    .result-head-title h1 { font-size: 17px; white-space: normal; }
    .context-bar { margin-left: 0; }
    .context-chip, .btn-config { display: none; }
    .result-head, .section-head { min-height: 64px; padding: 14px; }
    .result-stage { padding: 7px; }
    .result-area { min-height: 410px; border-radius: 12px; }
    .result-area.has-image { padding: 7px; }
    .result-actions { right: 13px; bottom: 13px; }
    .result-actions .btn { width: auto; min-height: 36px; padding: 6px 10px; }
    .history-card { margin-top: 14px; }
    .history-list { grid-template-columns: 1fr; gap: 8px; padding: 8px; }
    .h-item { display: grid; grid-template-columns: 124px minmax(0, 1fr); }
    .task-image-wrap { height: 100%; min-height: 164px; aspect-ratio: auto; }
    .task-body { padding: 12px; }
    .h-prompt { min-height: 0; }
    .card-note { max-width: 45%; }
    #costPanel:not(:empty) { grid-template-columns: 1fr; }
    .cost-row:nth-child(2) { border-left: 0; border-top: 1px solid var(--border); }
    .cost-row:last-child { grid-column: auto; }
    .creation-dock { bottom: 8px; width: calc(100vw - 16px); }
    .composer { padding: 8px; border-radius: 16px; }
    .prompt-field textarea { min-height: 58px; max-height: 82px; font-size: 13px; }
    .composer-bottom { display: grid; gap: 8px; }
    .composer-controls { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px; }
    .model-control { width: 100%; }
    .size-control { grid-column: 1 / -1; width: 100%; }
    .mobile-config-btn { display: inline-flex; grid-column: 2; grid-row: 1; }
    .generate-cluster { display: grid; grid-template-columns: 1fr 1.2fr; }
    .generate-cluster .btn-primary { width: 100%; }
    .toast { bottom: 326px; max-width: calc(100vw - 28px); white-space: normal; text-align: center; }
    .footer { display: none; }
  }
  @media (max-width: 420px) {
    body { padding-bottom: 350px; }
    .result-area { min-height: 370px; }
    .h-item { grid-template-columns: 108px minmax(0, 1fr); }
    .h-top .h-tag.model { display: none; }
  }

  /* ============================================================
     Desktop split view v5 — left creation panel / right task feed
     ============================================================ */
  body {
    min-width: 1180px;
    padding-bottom: 0;
  }
  body.drawer-open { overflow: auto; }
  .header-inner {
    max-width: 1680px;
    min-height: 66px;
    flex-direction: row;
    align-items: center;
    padding: 10px 24px;
  }
  .logo-subtitle, .workspace-status, .stat-chip { display: inline-flex; }
  .header-stats { width: auto; display: flex; border: 0; padding: 0; }
  .main { max-width: 1680px; padding: 24px 24px 0; }
  .workspace-grid {
    display: grid;
    grid-template-columns: minmax(400px, 440px) minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }
  .workspace-sidebar {
    position: sticky;
    top: 86px;
    max-height: calc(100vh - 104px);
    overflow: auto;
    padding: 1px 5px 18px 1px;
    scrollbar-gutter: stable;
  }
  .gallery-shell { width: 100%; margin: 0; min-width: 0; }
  .context-bar { max-width: 58%; }
  .context-chip:last-of-type { max-width: 340px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .btn-config, .mobile-config-btn { display: none; }

  .creation-dock {
    position: static;
    z-index: auto;
    left: auto;
    bottom: auto;
    width: 100%;
    transform: none;
    pointer-events: auto;
  }
  .composer {
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--card);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
  }
  .panel-heading {
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
  }
  .panel-heading h2 { font-size: 16px; line-height: 1.2; letter-spacing: -.02em; }
  .panel-heading .card-index { margin-bottom: 3px; }
  .panel-badge {
    padding: 5px 8px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-soft);
    color: var(--text-3);
    font: 600 9px/1 var(--mono);
  }
  .prompt-field { padding: 14px 14px 10px; }
  .prompt-field label { padding: 0 2px 6px; }
  .prompt-field textarea {
    min-height: 220px;
    max-height: 320px;
    margin-top: 0;
    padding: 12px;
    border: 1px solid var(--border) !important;
    border-radius: 12px;
    background: var(--card-strong) !important;
    box-shadow: none !important;
    font-family: var(--sans);
    font-size: 12px;
    line-height: 1.65;
  }
  .composer-bottom { display: grid; gap: 10px; padding: 0 14px 14px; }
  .composer-controls { display: grid; grid-template-columns: 1fr; gap: 8px; }
  .compact-control { min-height: 58px; padding: 8px 10px; }
  .model-control, .size-control { width: 100%; }
  .model-control input { min-height: 24px; font-size: 11px; }
  .size-control .seg-btn { min-height: 28px; }
  .generate-cluster { display: block; }
  .generate-cluster .btn-primary {
    width: 100%; min-height: 64px; display: grid; place-content: center; gap: 5px;
    padding: 10px 16px; text-align: center;
  }
  .generate-primary-label { color: inherit; font-size: 16px; font-weight: 800; line-height: 1.1; }
  .generate-primary-estimate { color: color-mix(in srgb, currentColor 68%, transparent); font: 650 10px/1.25 var(--mono); }

  .drawer-backdrop { display: none; }
  .config-drawer {
    position: static;
    z-index: auto;
    width: 100%;
    margin-top: 14px;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--card);
    box-shadow: var(--shadow);
    transform: none;
    transition: none;
  }
  body.drawer-open .config-drawer { transform: none; }
  .drawer-head {
    position: static;
    min-height: 68px;
    padding: 14px 16px;
    background: transparent;
  }
  .drawer-head .icon-btn { display: none; }
  .drawer-body { padding: 16px 16px 24px; }
  .drawer-body .field { margin-bottom: 18px; }
  .drawer-body .field:last-child { margin-bottom: 0; }
  .vars-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .drawer-body input[type="text"] { min-height: 40px; font-size: 12px; }

  .result-area { min-height: 540px; }
  .history-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .h-item { display: flex; }
  .task-image-wrap { height: auto; min-height: 0; aspect-ratio: 4 / 3; }
  .h-top .h-tag.model { display: inline-block; }
  .toast { bottom: 24px; }
  .footer { display: block; padding-bottom: 28px; }

  @media (min-width: 1540px) {
    .workspace-grid { grid-template-columns: 460px minmax(0, 1fr); gap: 24px; }
    .history-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  }

  /* Desktop workspace polish: collapsible configuration rail and consistent dark controls. */
  .workspace-grid,
  .workspace-sidebar { transition: grid-template-columns .28s cubic-bezier(.2,.8,.2,1), opacity .2s ease, transform .28s cubic-bezier(.2,.8,.2,1), gap .28s ease; }
  body.sidebar-collapsed .workspace-grid { grid-template-columns: 0 minmax(0, 1fr); gap: 0; }
  body.sidebar-collapsed .workspace-sidebar {
    width: 0;
    min-width: 0;
    padding: 0;
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
    transform: translateX(-18px);
  }
  .sidebar-toggle { width: auto; min-width: 104px; min-height: 34px; padding: 6px 10px; gap: 7px; white-space: nowrap; }
  .sidebar-toggle .toggle-glyph { font-size: 14px; transition: transform .25s ease; }
  body.sidebar-collapsed .sidebar-toggle .toggle-glyph { transform: rotate(180deg); }
  .workspace-grid { position: relative; }
  .sidebar-rail-control {
    position: absolute; z-index: 76; top: 14px; left: 0; width: 440px; height: 36px;
    display: flex; justify-content: flex-end; align-items: center; padding-right: 15px;
    pointer-events: none; transition: width .28s cubic-bezier(.2,.8,.2,1), padding .28s ease;
  }
  .sidebar-rail-control .sidebar-toggle { pointer-events: auto; }
  .panel-heading { padding-right: 132px; }
  body.sidebar-collapsed .sidebar-rail-control { width: 0; justify-content: flex-start; padding-right: 0; }
  body.sidebar-collapsed .gallery-shell { padding-left: 120px; }
  .gallery-shell { transition: padding-left .28s ease; }
  .composer-bottom { width: 100%; justify-content: stretch; }
  .composer-controls, .generate-cluster { width: 100%; }
  .composer, .config-drawer { box-shadow: 0 1px 1px rgba(27,27,23,.05), 0 18px 48px rgba(27,27,23,.07); }
  .composer:hover, .config-drawer:hover { border-color: var(--border-strong); }
  .advanced-controls { padding: 10px; border: 1px solid var(--border); border-radius: 12px; background: color-mix(in srgb, var(--bg-soft) 68%, transparent); }
  /* 标题行和按钮并排、文案换到下面独占整行 —— 原来三者抢同一行，
     文案只剩 192px，「当前为文本生成」被断成「文本生 / 成」。 */
  /* 老板 2026-08-13：「参考图与画布那里 优化下布局 不要浪费空间」。
     原来标题、说明、按钮各占一行，中间大片空白，竖着吃掉三行高度。
     改成两行：标题和说明并排（说明是次要信息，挤在标题右边就够），按钮铺满第二行。 */
  .reference-row { flex-wrap: wrap; align-items: center; gap: 6px 10px; padding: 8px 10px; }
  .reference-row .reference-copy {
    order: 1; flex: 1 1 100%; min-width: 0;
    display: flex; align-items: baseline; gap: 8px;
  }
  .reference-row .reference-copy .ref-status {
    flex: 1 1 auto; min-width: 0; margin-top: 0;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  }
  .reference-row .reference-actions { order: 2; flex: 1 1 100%; margin-left: 0; }
  .reference-row .reference-actions .btn { flex: 1 1 0; }
  .reference-row { border-radius: 12px; }
  .prompt-sync-status {
    display: inline-flex; align-items: center; gap: 5px; margin-left: 7px; padding: 3px 6px;
    border: 1px solid var(--border); border-radius: 999px; color: var(--text-3); background: var(--bg-soft);
    font: 700 9px/1 var(--sans); vertical-align: 1px; transition: color .2s ease, border-color .2s ease, background .2s ease;
  }
  .prompt-sync-status.dirty { color: #98612f; border-color: #d9b78e; background: #f7ead8; }
  .prompt-sync-status.done { color: var(--green); border-color: color-mix(in srgb, var(--green) 36%, var(--border)); background: var(--green-soft); }
  .prompt-sync-status.error { color: #b95447; border-color: color-mix(in srgb, #b95447 42%, var(--border)); background: color-mix(in srgb, #b95447 10%, var(--card)); }
  .prompt-field.prompt-field-en { margin-top: 10px; }
  .prompt-field-en textarea { min-height: 170px; color: var(--text-2); background: color-mix(in srgb, var(--bg-soft) 72%, var(--card-strong)); }
  /* 🔴 [hidden] 的 display:none 会被自定义 display 覆盖。这个坑本项目踩了三次：
     画布按钮 → 锁横幅 → 「按脚本连出一套图」按钮（.btn/.btn-batch/.btn-primary 都设了 display）。
     前两次都是逐个补豁免，于是第三次照样中招 —— 改成全局兜底，一次根治。
     扫描器 tests 里有一条会持续检查：任何带 hidden 的元素都不许被 display 盖掉。 */
  [hidden] { display: none !important; }
  /* 标签和它的问号必须同排，否则问号会掉到下一行（老板反馈"问号位置完全不对"） */
  .btn-label-row { display: inline-flex; align-items: center; gap: 6px; justify-content: inherit; }
  /* 基础 .btn 是 width:100%，塞进这种「按钮 + 说明问号」的行里会把问号顶到下一行。
     和 .reference-copy span 压掉 .ref-title-row 是同一类毛病：宽泛规则压掉组件布局。
     这里一次性收口，所有这类行都不用再各修各的。 */
  .btn-label-row > .btn { width: auto; flex: 0 1 auto; }
  /* 标题和它的问号必须同一行。用 !important 不是为了偷懒 ——
     是因为这行被别的规则压掉过四次，宁可让它不可被压。 */
  .ref-title-row { display: inline-flex !important; align-items: center; gap: 6px; white-space: nowrap; }
  .lock-banner { display:flex; align-items:center; gap:8px; margin:10px 0 0; padding:9px 12px;
    border:1px solid var(--accent); border-radius:10px; background:color-mix(in srgb, var(--accent) 12%, transparent);
    color:var(--accent); font-size:12px; line-height:1.5; }
  .lock-banner-stop { margin-left:auto; flex:none; border:1px solid var(--accent); background:none;
    color:var(--accent); border-radius:8px; font-size:12px; padding:3px 10px; cursor:pointer; }
  .lock-banner-dot { width:8px; height:8px; border-radius:50%; background:var(--accent); flex:none;
    animation:lockPulse 1.2s ease-in-out infinite; }
  @keyframes lockPulse { 0%,100% { opacity:.35; } 50% { opacity:1; } }
  .ops-history { margin:10px 0 0; border-top:1px solid var(--line); padding-top:10px; }
  .ops-history-head { display:flex; align-items:center; justify-content:space-between; gap:10px; }
  .ops-history-toggle { background:none; border:none; color:var(--muted); font-size:12px; cursor:pointer; padding:0; }
  .ops-history-list { list-style:none; margin:8px 0 0; padding:0; max-height:190px; overflow:auto; font-size:12px; }
  .ops-history-list li { display:flex; justify-content:space-between; gap:8px; padding:4px 0; border-bottom:1px dashed var(--line); color:var(--muted); }
  .ops-history-list li.locked { opacity:.65; }
  .ops-history-list time { flex:none; font-variant-numeric:tabular-nums; }
  .btn-batch { width:100%; margin-top:8px; display:flex; flex-direction:column; align-items:flex-start; gap:2px; }
  .regenerate-donor-row { display:flex; align-items:center; gap:10px; flex-wrap:wrap; margin:6px 0; }
  .regenerate-donor-list { display:flex; gap:8px; flex-wrap:wrap; }
  .regenerate-donor-list figure { position:relative; margin:0; }
  .regenerate-donor-list img { width:56px; height:56px; object-fit:cover; border-radius:8px; border:1px solid var(--line); }
  .regenerate-donor-list button { position:absolute; top:-6px; right:-6px; width:20px; height:20px; border-radius:50%;
    border:none; background:var(--accent); color:var(--paper); font-size:12px; line-height:20px; cursor:pointer; padding:0; }
  .script-diff { margin:6px 0 0; font-size:12px; line-height:1.5; color:var(--accent); }
  .prompt-language-note { margin-left: 7px; color: var(--text-3); font: 600 9px/1 var(--sans); }
  .prompt-sync-guard {
    position: fixed; inset: 0; z-index: 220; display: grid; place-items: center;
    opacity: 0; visibility: hidden; pointer-events: none;
    background: rgba(20,20,17,.18); backdrop-filter: blur(1.5px);
    transition: opacity .16s ease, visibility .16s ease;
  }
  .prompt-sync-guard.show { opacity: 1; visibility: visible; pointer-events: auto; cursor: wait; }
  body.prompt-syncing { overflow: hidden; }
  .prompt-sync-card {
    min-width: 260px; display: flex; align-items: center; gap: 12px; padding: 14px 16px;
    border: 1px solid var(--border-strong); border-radius: 12px; background: var(--card-strong); color: var(--text);
    box-shadow: 0 22px 64px rgba(20,20,17,.24);
  }
  .prompt-sync-card strong { display: block; font-size: 13px; }
  .prompt-sync-card span { display: block; margin-top: 3px; color: var(--text-3); font-size: 10px; }
  .control-label { display: inline-flex; align-items: center; gap: 4px; }
  .help-tip {
    position: relative; display: inline-grid; place-items: center; width: 14px; height: 14px;
    border: 1px solid var(--border-strong); border-radius: 50%; color: var(--text-3); background: var(--card-strong);
    font: 800 9px/1 var(--sans); cursor: help; outline: none;
  }
  .help-tooltip-layer {
    position: fixed; z-index: 520; width: min(240px, calc(100vw - 24px)); padding: 8px 9px;
    border: 1px solid var(--border-strong); border-radius: 8px; color: var(--text-2); background: var(--card-strong);
    box-shadow: 0 12px 30px rgba(20,20,17,.18); font: 500 10px/1.5 var(--sans); letter-spacing: 0;
    opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(4px);
    transition: opacity .12s ease, transform .12s ease, visibility .12s ease;
  }
  .help-tooltip-layer.show { opacity: 1; visibility: visible; transform: translateY(0); }
  .prompt-sync-spinner {
    width: 22px; height: 22px; flex: 0 0 auto; border: 2px solid var(--border);
    border-top-color: var(--accent); border-radius: 50%; animation: promptSyncSpin .7s linear infinite;
  }
  .prompt-sync-guard.done .prompt-sync-spinner { border: 0; animation: none; }
  .prompt-sync-guard.done .prompt-sync-spinner::after { content: "✓"; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--green); color: white; font-weight: 800; }
  @keyframes promptSyncSpin { to { transform: rotate(360deg); } }

  html[data-theme="dark"] .btn-ghost,
  html[data-theme="dark"] .icon-btn,
  html[data-theme="dark"] .seg-btn,
  html[data-theme="dark"] .param-control,
  html[data-theme="dark"] .compact-control,
  html[data-theme="dark"] .reference-row,
  html[data-theme="dark"] .estimate-row {
    color: var(--text-2);
    border-color: var(--border);
    background: var(--card-strong);
    box-shadow: none;
  }
  html[data-theme="dark"] .btn-ghost:hover,
  html[data-theme="dark"] .icon-btn:hover,
  html[data-theme="dark"] .seg-btn:hover {
    color: var(--text);
    border-color: var(--accent);
    background: #32312a;
    box-shadow: 0 8px 22px rgba(0,0,0,.22);
  }
  html[data-theme="dark"] .seg-btn.active,
  html[data-theme="dark"] .tool-btn.active {
    color: #fff8f2;
    border-color: var(--accent);
    background: var(--accent);
  }
  html[data-theme="dark"] select,
  html[data-theme="dark"] input,
  html[data-theme="dark"] textarea {
    color: var(--text);
    border-color: var(--border);
    background-color: var(--card-strong);
  }
  html[data-theme="dark"] .btn-primary { color: #1d120d; background: var(--accent-strong); box-shadow: 0 10px 28px rgba(220,130,83,.2); }
  html[data-theme="dark"] .btn-primary:hover { color: #170e09; background: #ffad7e; }
  html[data-theme="dark"] .modal,
  html[data-theme="dark"] .canvas-stage,
  html[data-theme="dark"] .workflow-modal { color: var(--text); background: #1b1b18; }

  /* Original studio visual language, with the new provider and canvas controls. */
  :root {
    --bg: #ececea;
    --bg-soft: #e5e5e0;
    --card: #f8f8f6;
    --card-strong: #ffffff;
    --border: #d8d7d0;
    --border-strong: #c5c3ba;
    --text: #1b1b17;
    --text-2: #5e5d55;
    --text-3: #8d8b82;
    --accent: #c96b3c;
    --accent-strong: #a94f28;
    --accent-soft: #f2ded3;
    --green: #3f765d;
    --green-soft: #dce9e1;
    --radius: 11px;
    --radius-sm: 7px;
    --shadow: 0 1px 1px rgba(27,27,23,.05), 0 10px 28px rgba(27,27,23,.05);
    --shadow-lg: 0 24px 72px rgba(20,20,17,.22);
  }
  html[data-theme="dark"] {
    --bg: #181815;
    --bg-soft: #22221e;
    --card: #20201c;
    --card-strong: #282823;
    --border: #37372f;
    --border-strong: #4b4a40;
    --text: #f0efe8;
    --text-2: #b9b7ad;
    --text-3: #85837a;
    --accent: #dc8253;
    --accent-strong: #ef9a6c;
    --accent-soft: #4c3023;
    --green: #73ad8f;
    --green-soft: #243c31;
  }
  body { background: var(--bg); }
  .header { background: color-mix(in srgb, var(--bg) 88%, transparent); }
  .logo-badge { border-radius: 5px; background: var(--text); box-shadow: 5px 5px 0 var(--accent); }
  .logo-badge span:last-child { background: var(--accent); }
  .card-index, .eyebrow { color: var(--accent-strong); }
  .result-card, .history-card, .composer, .config-drawer { border-radius: var(--radius); backdrop-filter: none; }
  .result-area {
    border-radius: 7px;
    background:
      linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px),
      #171713;
    background-size: 32px 32px, 32px 32px, auto;
  }
  .placeholder-mark::after { background: linear-gradient(135deg, transparent 46%, var(--accent) 47% 53%, transparent 54%); }
  .placeholder-kicker { color: #d98a62; }
  .compact-control, .panel-badge, .estimate-row { border-radius: 7px; }
  .seg-btn.active { background: var(--text); color: var(--card-strong); }
  .generate-cluster .btn-primary,
  .generate-cluster .btn-primary:hover:not(:disabled) {
    background: var(--text);
    box-shadow: 0 8px 20px rgba(27,27,23,.18);
  }
  .h-item { border-radius: 8px; }
  .task-status { border-radius: 5px; }
  .advanced-controls {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }
  .param-control { display: grid; min-width: 0; gap: 4px; }
  .param-control span { color: var(--text-3); font-size: 9px; font-weight: 700; letter-spacing: .04em; }
  .param-control select, .param-control input[type="number"] {
    width: 100%; min-width: 0; min-height: 34px; padding: 6px 8px;
    border: 1px solid var(--border); border-radius: 6px;
    background: var(--card-strong); color: var(--text); font: 600 10px/1.2 var(--mono);
  }
  .reference-row {
    display: flex; align-items: center; justify-content: space-between; gap: 10px;
    padding: 10px; border: 1px solid var(--border); border-radius: 7px; background: var(--bg-soft);
  }
  .reference-thumbs { display: flex; align-items: center; flex: 0 0 auto; }
  .reference-thumbs[hidden] { display: none; }
  .reference-thumb-button {
    position: relative; width: 38px; height: 38px; margin-left: -7px; padding: 0;
    overflow: hidden; border: 2px solid var(--bg-soft); border-radius: 7px;
    background: var(--card-strong); cursor: zoom-in; transition: transform .18s var(--ease), z-index .18s;
  }
  .reference-thumb-button:first-child { margin-left: 0; }
  .reference-thumb-button:hover, .reference-thumb-button:focus-visible { z-index: 2; transform: translateY(-2px) scale(1.05); }
  .reference-role-badge {
    position: absolute; left: 2px; bottom: 2px; padding: 2px 4px;
    border-radius: 3px; background: rgba(20,20,17,.86); color: #f1eee6;
    font: 700 7px/1 var(--mono); letter-spacing: .04em; pointer-events: none;
  }
  .reference-role-badge.subject { background: rgba(201,107,60,.92); color: #fff; }
  /* 这一块以前用 `.reference-copy strong / span` 这种宽泛后代选择器定 display，
     结果把组件自己的 `.ref-title-row { display:flex }` 压成了 block，问号被挤到第二行
     —— 老板圈了四次。和 [hidden] 被自定义 display 盖掉是同一类毛病：
     **宽泛选择器压掉组件自己的布局规则**。现在每个元素用自己的类名，不留这个机会。 */
  .reference-copy { min-width: 0; flex: 1 1 100%; }
  .reference-copy .ref-title-text { font-size: 11px; font-weight: 700; white-space: nowrap; }
  .reference-copy .ref-status { display: block; margin-top: 2px; color: var(--text-3); font-size: 10px; }
  .reference-actions { display: flex; gap: 6px; flex: 0 0 auto; margin-left: auto; }
  .reference-actions .btn { width: auto; min-height: 34px; padding: 6px 10px; }
  .reference-thumb {
    display: block; width: 100%; height: 100%; object-fit: cover; background: var(--card-strong);
  }
  /* 双击输入节点展开全文（老板 2026-08-12：节点上是截断的，要能看到具体提示词和配置） */
  .text-modal { position: fixed; inset: 0; z-index: 160; display: none; place-items: center;
    padding: 26px; background: rgba(15,15,12,.72); backdrop-filter: blur(8px); }
  .text-modal.open { display: grid; }
  .text-dialog { width: min(760px, calc(100vw - 52px)); max-height: min(720px, calc(100vh - 52px));
    display: flex; flex-direction: column; overflow: hidden;
    border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); box-shadow: var(--shadow); }
  .text-dialog-head { display: flex; align-items: center; justify-content: space-between; gap: 14px;
    padding: 14px 18px; border-bottom: 1px solid var(--border); }
  .text-dialog-head h2 { font-size: 15px; letter-spacing: -.02em; }
  .text-dialog-head .btn { width: auto; min-height: 34px; padding: 6px 12px; }
  .text-dialog-body { padding: 16px 18px; overflow: auto; }
  .text-dialog-body section + section { margin-top: 16px; }
  .text-dialog-body h3 { margin-bottom: 6px; color: var(--accent-strong);
    font: 700 10px/1.4 var(--mono); letter-spacing: .14em; }
  .text-dialog-body pre { white-space: pre-wrap; word-break: break-word;
    color: var(--text-2); font: 400 13px/1.7 inherit; }

  .canvas-modal {
    position: fixed; inset: 0; z-index: 150; display: none; place-items: center;
    padding: 26px; background: rgba(15,15,12,.72); backdrop-filter: blur(8px);
  }
  .canvas-modal.open { display: grid; }
  .canvas-dialog {
    width: min(1180px, calc(100vw - 52px)); height: min(820px, calc(100vh - 52px));
    display: grid; grid-template-rows: auto 1fr auto; overflow: hidden;
    border: 1px solid var(--border-strong); border-radius: 12px; background: var(--card); box-shadow: var(--shadow-lg);
  }
  .canvas-head, .canvas-foot {
    display: flex; align-items: center; justify-content: space-between; gap: 14px;
    padding: 12px 14px; border-bottom: 1px solid var(--border);
  }
  .canvas-foot { justify-content: space-between; border-top: 1px solid var(--border); border-bottom: 0; }
  .canvas-head h2 { font-size: 15px; }
  .canvas-tools { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; }
  .canvas-tools .btn, .canvas-foot .btn { width: auto; }
  .tool-btn.active { background: var(--text); color: var(--card-strong); border-color: var(--text); }
  .brush-control { display: flex; align-items: center; gap: 7px; padding: 0 8px; color: var(--text-3); font-size: 11px; }
  .brush-control input { width: 110px; accent-color: var(--accent); }
  .canvas-stage {
    min-height: 0; display: grid; place-items: center; overflow: auto; padding: 24px;
    background-color: #151512;
    background-image: linear-gradient(45deg,#20201c 25%,transparent 25%),linear-gradient(-45deg,#20201c 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#20201c 75%),linear-gradient(-45deg,transparent 75%,#20201c 75%);
    background-position: 0 0,0 10px,10px -10px,-10px 0; background-size: 20px 20px;
  }
  #editCanvas { display: none; max-width: 100%; max-height: 100%; cursor: crosshair; box-shadow: 0 18px 55px rgba(0,0,0,.42); touch-action: none; }
  #editCanvas.ready { display: block; }
  .canvas-empty { max-width: 360px; color: #b9b7ad; text-align: center; }
  .canvas-empty strong { display: block; margin-bottom: 6px; color: #f0efe8; font-size: 15px; }
  .canvas-instruction { display: grid; flex: 1 1 520px; gap: 5px; min-width: 280px; }
  .canvas-instruction span { color: var(--text-3); font-size: 10px; font-weight: 700; }
  .canvas-instruction textarea {
    width: 100%; min-height: 54px; max-height: 112px; resize: vertical; padding: 9px 10px;
    border: 1px solid var(--border); border-radius: 7px; background: var(--card-strong); color: var(--text);
    font: 500 12px/1.5 var(--sans);
  }
  .canvas-action-hint { color: var(--text-3); font-size: 10px; line-height: 1.45; }
  .canvas-foot-actions { display: flex; align-items: center; gap: 7px; flex: 0 0 auto; }
  .canvas-foot-actions > [hidden] { display: none !important; }
  .h-actions { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
  .regenerate-modal {
    position: fixed; inset: 0; z-index: 155; display: none; place-items: center;
    padding: 34px; background: rgba(15,15,12,.72); backdrop-filter: blur(8px);
  }
  .regenerate-modal.open { display: grid; }
  .regenerate-dialog {
    width: min(1080px, calc(100vw - 68px)); max-height: min(760px, calc(100vh - 68px)); overflow: hidden;
    display: grid; grid-template-rows: auto minmax(0, 1fr) auto;
    border: 1px solid var(--border-strong); border-radius: 14px; background: var(--card); box-shadow: var(--shadow-lg);
  }
  .regenerate-head {
    display: flex; align-items: center; justify-content: space-between; gap: 18px;
    padding: 17px 18px; border-bottom: 1px solid var(--border);
  }
  .regenerate-head h2 { margin-top: 3px; font-size: 18px; }
  .regenerate-head p { margin-top: 5px; color: var(--text-3); font-size: 11px; }
  .regenerate-body { min-height: 0; display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(320px, .85fr); }
  .regenerate-preview {
    min-height: 440px; display: grid; place-items: center; overflow: auto; padding: 22px;
    border-right: 1px solid var(--border); background: #151512;
  }
  .regenerate-preview img { display: block; max-width: 100%; max-height: 560px; object-fit: contain; border-radius: 8px; box-shadow: 0 18px 55px rgba(0,0,0,.36); }
  .regenerate-panel { min-width: 0; overflow: auto; padding: 22px; }
  .regenerate-section-label { color: var(--accent-strong); font: 700 10px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; }
  .regenerate-product { margin-top: 9px; color: var(--text); font-size: 16px; line-height: 1.45; }
  .regenerate-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
  .regenerate-meta span { padding: 5px 8px; border: 1px solid var(--border); border-radius: 7px; background: var(--card-strong); color: var(--text-2); font: 600 10px/1 var(--mono); }
  .regenerate-field { display: grid; gap: 7px; margin-top: 22px; }
  .regenerate-field > span { color: var(--text-2); font-size: 11px; font-weight: 700; }
  .regenerate-field textarea {
    width: 100%; min-height: 150px; resize: vertical; padding: 12px;
    border: 1px solid var(--border); border-radius: 9px; background: var(--card-strong); color: var(--text);
    font: 500 12px/1.6 var(--sans);
  }
  .regenerate-field small { color: var(--text-3); font-size: 10px; line-height: 1.55; }
  .regenerate-source-prompt { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); }
  .regenerate-source-prompt summary { color: var(--text-3); font-size: 10px; cursor: pointer; }
  .regenerate-source-prompt p { max-height: 126px; overflow: auto; margin-top: 10px; color: var(--text-3); font-size: 10px; line-height: 1.6; white-space: pre-wrap; }
  .regenerate-foot { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 14px 18px; border-top: 1px solid var(--border); }
  .regenerate-foot span { color: var(--text-3); font-size: 10px; }
  .regenerate-foot .btn { width: auto; min-width: 150px; }
  .image-preview-modal {
    position: fixed; inset: 0; z-index: 180; display: none; place-items: center;
    padding: 42px; background: rgba(10,10,8,.9); backdrop-filter: blur(12px);
  }
  .image-preview-modal.open { display: grid; }
  .image-preview-figure { display: grid; gap: 10px; max-width: min(94vw, 1500px); max-height: 92vh; margin: 0; }
  .image-preview-figure img { display: block; max-width: 100%; max-height: calc(92vh - 38px); object-fit: contain; border-radius: 8px; box-shadow: 0 28px 90px rgba(0,0,0,.5); }
  .image-preview-figure figcaption { color: #dad7cf; font-size: 12px; text-align: center; }
  .image-preview-close {
    position: fixed; top: 20px; right: 24px; width: 42px; height: 42px;
    border: 1px solid rgba(255,255,255,.22); border-radius: 50%; background: rgba(35,35,31,.75);
    color: #fff; font-size: 27px; line-height: 1; cursor: pointer;
  }
  .result-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 10px; width: 100%; }
  .result-grid .result-img { width: 100%; max-height: 620px; object-fit: contain; }
  .result-grid .result-unit { position: relative; display: grid; place-items: center; min-height: 360px; }
  .result-grid .result-actions { position: absolute; right: 12px; bottom: 12px; }
  .mode-pill { color: var(--accent-strong); }
  .result-area.workflow-mode {
    min-height: 660px; display: block; overflow: hidden; padding: 0;
    text-align: left; overscroll-behavior: contain;
  }
  .workflow-canvas { position: relative; width: 100%; min-width: 0; min-height: 660px; overflow: hidden; }
  .workflow-lines { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
  .workflow-lines path { fill: none; stroke: rgba(211,207,197,.6); stroke-width: 2; }
  .workflow-lines path.active { stroke: var(--accent); }
  /* 全屏时：既不能跟着浅色主题变白，也不能把网格盖掉（老板两轮分别指出这两点）。
     所以只改 padding/overflow，背景**继承 .result-area 自己的网格**，一个字都不覆盖。 */
  .result-area.is-fullscreen { padding: 12px; overflow: auto; }
  .result-area.is-fullscreen .workflow-toolbar .btn { border-color: rgba(255,255,255,.16); background: rgba(24,24,20,.78); color: #d8d4ca; }
  .result-area.is-fullscreen .workflow-sync-status,
  .result-area.is-fullscreen .workflow-pan-hint { color: #8f8d85; }
  .result-area.is-fullscreen .workflow-canvas,
  .result-area.is-fullscreen #drawflow { height: calc(100vh - 78px) !important; }
  .workflow-toolbar {
    position: sticky; left: 12px; top: 12px; z-index: 8; width: max-content; margin: 12px 0 0 12px;
    display: flex; gap: 6px; pointer-events: auto;
  }
  .workflow-toolbar .btn { width: auto; min-height: 32px; padding: 5px 9px; border-color: rgba(255,255,255,.16); background: rgba(24,24,20,.78); color: #d8d4ca; backdrop-filter: blur(8px); }
  .workflow-sync-status {
    display: inline-flex; align-items: center; min-height: 32px; padding: 5px 9px;
    border: 1px solid rgba(255,255,255,.14); border-radius: 7px; background: rgba(24,24,20,.78);
    color: #9c9a91; font: 650 9px/1 var(--mono); backdrop-filter: blur(8px);
  }
  .workflow-sync-status::before { content: ""; width: 6px; height: 6px; margin-right: 6px; border-radius: 50%; background: #d98a62; }
  .workflow-sync-status.synced::before { background: #73ad8f; }
  .workflow-sync-status.error::before { background: #d66f62; }
  .workflow-pan-hint {
    display: inline-flex; align-items: center; min-height: 32px; padding: 5px 8px;
    color: #77766f; font: 600 9px/1 var(--mono); pointer-events: none;
  }
  .flow-node {
    position: absolute; z-index: 2; overflow: hidden;
    border: 1px solid rgba(220,216,205,.22); border-radius: 10px;
    background: rgba(38,38,33,.94); color: #eeece5;
    box-shadow: 0 14px 36px rgba(0,0,0,.22); user-select: none;
  }
  .flow-node.dragging { z-index: 6; box-shadow: 0 22px 48px rgba(0,0,0,.38); }
  .flow-node-head {
    display: flex; align-items: center; justify-content: space-between; gap: 8px;
    min-height: 36px; padding: 8px 10px; border-bottom: 1px solid rgba(255,255,255,.08);
    cursor: grab; font: 700 10px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase;
  }
  .flow-node-head:active { cursor: grabbing; }
  .flow-node-kind { color: #df8b61; }
  .flow-node-state { color: #9c9a91; font-size: 9px; letter-spacing: 0; text-transform: none; }
  .flow-node-body { padding: 11px; color: #cbc8bf; font-size: 11px; line-height: 1.6; }
  .flow-prompt-language + .flow-prompt-language { margin-top: 9px; padding-top: 9px; border-top: 1px solid rgba(255,255,255,.08); }
  .flow-prompt-language strong { display: block; margin-bottom: 3px; color: #df8b61; font: 700 9px/1.2 var(--mono); }
  .flow-prompt-language span { display: -webkit-box; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 5; }
  .flow-config { width: 230px; }
  .flow-param-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
  .flow-param { padding: 7px; border: 1px solid rgba(255,255,255,.08); border-radius: 5px; background: rgba(0,0,0,.13); }
  .flow-param span { display: block; margin-bottom: 3px; color: #8f8d85; font-size: 9px; }
  .flow-param strong { color: #f0eee7; font: 600 10px/1.2 var(--mono); }
  .flow-task { width: 210px; min-height: 190px; }
  /* 原来固定 124px 扁盒子，3:4 的图 contain 之后只有 93px 宽，看不清也像被裁。
     改成跟结果节点同一套：按图片真实比例给高度。 */
  .flow-task-visual { display: grid; place-items: center; width: 100%; aspect-ratio: var(--flow-aspect, 3 / 4);
    max-height: 300px; overflow: hidden; background: #11110f; }
  /* 原来是 cover：图会被裁掉上下，老板反馈"这个图片显示不全"。改 contain 完整显示。 */
  .flow-task-visual img { width: 100%; height: 100%; object-fit: contain; background: #11110f; }
  .flow-task-visual.clickable { cursor: zoom-in; }
  .flow-task-hint { padding: 0 10px 9px; color: #8f8d85; font: 500 9px/1.4 var(--mono); }
  .flow-task-mark { width: 44px; height: 52px; border: 1px solid rgba(255,255,255,.23); transform: rotate(-3deg); }
  .flow-task-copy { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 9px 10px; font: 600 10px/1.2 var(--mono); }
  .flow-task-copy i { width: 7px; height: 7px; border-radius: 50%; background: #d98a62; box-shadow: 0 0 0 4px rgba(217,138,98,.12); }
  .flow-task.running .flow-task-mark { animation: pulseNode 1.35s ease-in-out infinite; }
  @keyframes pulseNode { 50% { opacity: .35; transform: rotate(3deg) scale(.92); } }
  .flow-output { width: 100%; }
  /* 二次编辑结果自带的"这一次用了什么指令"，让画布上每张图都能追溯到它的输入 */
  .flow-edit-input { padding: 8px 10px; border-bottom: 1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.03); }
  .flow-edit-input-head { color: var(--accent); font: 600 9px/1.4 var(--mono); letter-spacing: .06em; }
  .flow-edit-input-body { margin-top: 3px; max-height: 52px; overflow: hidden; color: #d7d4cc; font-size: 10px; line-height: 1.5; }
  .flow-edit-input-meta { margin-top: 4px; color: #8f8d85; font: 500 9px/1.4 var(--mono); }
  .flow-output-media {
    position: relative; display: grid; place-items: center; width: 100%; min-height: 180px; max-height: 320px;
    aspect-ratio: var(--flow-aspect, 1 / 1); overflow: hidden; padding: 0; border: 0; background: #11110f; cursor: zoom-in;
  }
  .flow-output-media img { position: absolute; inset: 0; display: block; width: 100%; height: 100%; object-fit: contain; background: #11110f; }
  .flow-output-actions { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; padding: 8px; }
  .flow-output-actions .btn { width: 100%; min-width: 0; min-height: 30px; padding: 4px 5px; border-color: rgba(255,255,255,.12); background: rgba(255,255,255,.06); color: #e7e4dc; font-size: 9px; white-space: nowrap; }
  .flow-port {
    position: absolute; top: 50%; width: 10px; height: 10px; margin-top: -5px;
    border: 2px solid #282823; border-radius: 50%; background: #d8d4ca;
  }
  .flow-port.in { left: -6px; }
  .flow-port.out { right: -6px; }
  .flow-caption { position: absolute; left: 42px; top: 34px; color: #8f8d85; font: 600 10px/1.5 var(--mono); letter-spacing: .08em; }
  #drawflow { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: none; cursor: grab; }
  #drawflow:active { cursor: grabbing; }
  #drawflow .drawflow { width: 100%; height: 100%; background: transparent; transform-origin: 0 0 !important; }
  #drawflow .drawflow-node {
    width: 248px; padding: 0; border: 1px solid rgba(220,216,205,.22); border-radius: 10px;
    background: rgba(38,38,33,.96); color: #eeece5; box-shadow: 0 14px 36px rgba(0,0,0,.22);
  }
  #drawflow .drawflow-node, #drawflow .drawflow-node * { user-select: none; }
  #drawflow .drawflow-node img {
    pointer-events: none; user-select: none; -webkit-user-drag: none;
  }
  #drawflow .drawflow-node.selected { border-color: var(--accent); box-shadow: 0 18px 42px rgba(0,0,0,.34); }
  #drawflow .drawflow-node.prompt-node { width: 248px; min-height: 148px; }
  #drawflow .drawflow-node.config-node { width: 230px; }
  #drawflow .drawflow-node.task-node { width: 210px; }
  #drawflow .drawflow-node.output-node { width: 240px; }
  #drawflow .drawflow-node .drawflow_content_node { padding: 0; border-radius: inherit; overflow: hidden; }
  #drawflow .drawflow-node .input, #drawflow .drawflow-node .output {
    width: 12px; height: 12px; border: 2px solid #282823; background: #d8d4ca;
  }
  #drawflow .drawflow-node .input { left: -7px; }
  #drawflow .drawflow-node .output { right: -7px; }
  #drawflow .connection .main-path { stroke: rgba(211,207,197,.58); stroke-width: 2px; }
  #drawflow .connection.selected .main-path { stroke: var(--accent); }
  #drawflow .parent-node .drawflow-node:hover { box-shadow: 0 18px 44px rgba(0,0,0,.3); }
  .flow-node-head { cursor: move; }
  .workflow-dependency-error { position: absolute; left: 42px; top: 90px; max-width: 420px; color: #d8d4ca; }

  /* Keep the last visual layer authoritative in dark mode. */
  html[data-theme="dark"] .btn-ghost,
  html[data-theme="dark"] .icon-btn,
  html[data-theme="dark"] .seg-btn,
  html[data-theme="dark"] .compact-control,
  html[data-theme="dark"] .param-control,
  html[data-theme="dark"] .reference-row,
  html[data-theme="dark"] .estimate-row {
    color: var(--text-2);
    border-color: var(--border);
    background: var(--card-strong);
    box-shadow: none;
  }
  html[data-theme="dark"] .btn-ghost:hover,
  html[data-theme="dark"] .icon-btn:hover,
  html[data-theme="dark"] .seg-btn:hover {
    color: var(--text);
    border-color: var(--accent);
    background: #34332c;
  }
  html[data-theme="dark"] .seg-btn.active,
  html[data-theme="dark"] .tool-btn.active {
    color: #1b100b;
    border-color: var(--accent-strong);
    background: var(--accent-strong);
  }
  html[data-theme="dark"] .generate-cluster .btn-primary,
  html[data-theme="dark"] .generate-cluster .btn-primary:hover:not(:disabled) {
    color: #1a100b;
    background: var(--accent-strong);
    box-shadow: 0 10px 28px rgba(220,130,83,.2);
  }
  html[data-theme="dark"] .composer,
  html[data-theme="dark"] .config-drawer,
  html[data-theme="dark"] .result-card,
  html[data-theme="dark"] .history-card,
  html[data-theme="dark"] .canvas-dialog { border-color: var(--border); background: var(--card); }
  html[data-theme="dark"] .advanced-controls { border-color: var(--border); background: #1d1d1a; }
  html[data-theme="dark"] .prompt-sync-status.dirty { color: #f2bc84; border-color: #704a2e; background: #38291f; }
  html[data-theme="dark"] .prompt-sync-card { border-color: var(--border-strong); background: #2a2924; }
  html[data-theme="dark"] .help-tip { border-color: var(--border-strong); background: #2a2924; }
  html[data-theme="dark"] .help-tooltip-layer { border-color: var(--border-strong); color: var(--text-2); background: #2a2924; box-shadow: 0 14px 32px rgba(0,0,0,.34); }
  html[data-theme="light"] select,
  html[data-theme="light"] input,
  html[data-theme="light"] textarea { color: var(--text) !important; background-color: var(--card-strong) !important; }
  html[data-theme="dark"] select,
  html[data-theme="dark"] input,
  html[data-theme="dark"] textarea { color: var(--text) !important; background-color: var(--card-strong) !important; }
  html[data-theme] select,
  html[data-theme] input,
  html[data-theme] textarea { transition: border-color .18s var(--ease), box-shadow .18s var(--ease); }

  @media (min-width: 1540px) {
    .sidebar-rail-control { width: 460px; }
    body.sidebar-collapsed .sidebar-rail-control { width: 0; }
  }