/* 实验室首页：自研 AI 剪辑工具（AI动效代码版剪映）介绍。v1.45 新增，颜色照深色写，浅色版由 官网主题/build_theme.py 自动生成 */
.toolbox-hero h1.lab-title { font-size: clamp(44px, 7.2vw, 108px); line-height: 1; letter-spacing: -.04em; }
.lab-title span { display: block; }
.lab-title span + span { color: var(--ink-mute); }
.lab-editor { padding: clamp(72px, 9vw, 130px) 0; border-bottom: 1px solid var(--paper-line); }
.lab-head { margin-bottom: clamp(28px, 4vw, 48px); max-width: 760px; }
.toolbox-list-section .lab-head { max-width: none; }
.lab-head h2 { margin: 10px 0 14px; color: var(--ink); font-size: clamp(30px, 3.6vw, 48px); line-height: 1.15; letter-spacing: -.02em; }
.lab-head p:last-child { color: var(--ink-mute); line-height: 1.8; max-width: 760px; }
.lab-hero-shot, .lab-row-shot { margin: 0; overflow: hidden; background: #020306; border: 1px solid var(--paper-line); }
.lab-hero-shot img, .lab-row-shot img { display: block; width: 100%; height: auto; }
.lab-hero-shot figcaption { padding: 14px 18px; color: var(--ink-mute); font-size: 14px; border-top: 1px solid var(--paper-line); }
.lab-quick, .lab-use { display: grid; gap: 1px; padding: 1px; margin-top: clamp(28px, 4vw, 48px); background: var(--paper-line); }
.lab-quick { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.lab-use { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.lab-card { display: flex; flex-direction: column; gap: 12px; padding: clamp(24px, 3vw, 40px); color: var(--ink); background: var(--surface); }
.lab-card h3, .lab-row-text h3 { margin: 0; color: var(--ink); font-size: clamp(21px, 2vw, 26px); line-height: 1.3; }
.lab-card > p:not(.tool-index), .lab-row-text > p:not(.tool-index) { margin: 0; color: var(--ink-mute); line-height: 1.8; }
.lab-card .tool-tags, .lab-row-text .tool-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: auto 0 0; padding: 6px 0 0; list-style: none; }
.lab-card .tool-tags li, .lab-row-text .tool-tags li { padding: 5px 10px; font-size: 13px; border: 1px solid var(--paper-line); }
.lab-link { text-decoration: none; transition: background-color .2s; }
.lab-link:hover { background: var(--surface-hover); }
.lab-link .tool-cta { display: inline-flex; align-items: center; gap: 6px; margin-top: auto; padding-top: 6px; }
.lab-rows { display: grid; gap: clamp(28px, 4vw, 56px); margin-top: clamp(48px, 6vw, 88px); }
.lab-row { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); gap: clamp(24px, 3.4vw, 52px); align-items: center; }
.lab-row.is-flip .lab-row-shot { order: 2; }
.lab-row-text { display: flex; flex-direction: column; gap: 12px; }
.lab-custom { padding: clamp(56px, 7vw, 100px) 0; }
.lab-custom-card { flex-direction: row; align-items: center; justify-content: space-between; gap: 32px; border: 1px solid var(--paper-line); }
.lab-custom-card h2 { margin: 8px 0 12px; color: var(--ink); font-size: clamp(26px, 3vw, 40px); }
.lab-custom-card p:last-child { max-width: 760px; margin: 0; color: var(--ink-mute); line-height: 1.8; }
.lab-custom-card .tool-cta { margin: 0; flex: none; }
@media (max-width: 1000px) {
  .lab-quick { grid-template-columns: 1fr; }
  .lab-row, .lab-row.is-flip { grid-template-columns: 1fr; }
  .lab-row.is-flip .lab-row-shot { order: 0; }
}
@media (max-width: 720px) {
  .lab-use { grid-template-columns: 1fr; }
  .lab-custom-card { flex-direction: column; align-items: flex-start; }
}