/* ================================================================
   途页官网 · 产品详情页
   共用 style.css 的变量 / 按钮 / 页头页脚；本文件只管详情页结构与 5 套版式
   ================================================================ */

.pd-hero { padding-top: calc(var(--header-h) + clamp(56px, 8vw, 120px)); padding-bottom: clamp(64px, 9vw, 130px); }
.pd-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .9fr); gap: clamp(40px, 7vw, 110px); align-items: center; }
.pd-crumb { display: flex; gap: 12px; flex-wrap: wrap; font-size: 11px; letter-spacing: .16em; color: var(--muted); margin-bottom: 34px; }
.pd-crumb a:hover { color: var(--accent); }
.pd-crumb-now { color: var(--ink-2); }
.pd-hero .work-badge { margin-bottom: 26px; }
.pd-title { font-family: var(--serif); font-weight: 400; font-size: clamp(44px, 6vw, 92px); line-height: 1.14; letter-spacing: -.02em; margin: 0 0 18px; }
.pd-tagline { font-family: var(--serif); font-size: clamp(19px, 2vw, 28px); color: var(--accent); margin: 0 0 28px; letter-spacing: .03em; }
.pd-lede { color: var(--ink-2); font-size: 16px; line-height: 2.15; max-width: 36em; margin: 0 0 42px; }
.pd-hero-actions { display: flex; gap: 30px; flex-wrap: wrap; align-items: center; }
.pd-hero-visual { margin: 0; }
.pd-hero-visual .media-slot { aspect-ratio: 4 / 3; }

/* 指标条 */
.pd-stats { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pd-stats .shell { display: flex; }
.pd-stat { flex: 1; padding: clamp(28px, 4vw, 52px) 0; border-right: 1px solid var(--line-soft); }
.pd-stat:last-child { border-right: 0; }
.pd-stat strong { display: block; font-family: var(--num); font-size: clamp(40px, 5vw, 72px); font-weight: 400; line-height: 1.1; }
.pd-stat span { font-size: 11px; letter-spacing: .2em; color: var(--muted); }

/* 通用区块 */
.pd-section { padding-block: clamp(80px, 11vw, 150px); }
.pd-sec-head { margin-bottom: clamp(48px, 7vw, 90px); }
.pd-sec-title { font-family: var(--serif); font-weight: 400; font-size: clamp(32px, 4.4vw, 62px); line-height: 1.25; margin: 0; }
.pd-feature-media { margin: 0; }
.pd-feature-media .media-slot { aspect-ratio: 4 / 3; }
.pd-feature-no { display: block; font-family: var(--num); font-size: 13px; color: var(--accent); letter-spacing: .1em; }
.pd-feature-title { font-family: var(--serif); font-weight: 400; font-size: clamp(26px, 2.8vw, 40px); line-height: 1.3; margin: 14px 0 16px; }
.pd-feature-desc { color: var(--ink-2); line-height: 2.05; font-size: 15px; margin: 0 0 24px; }
.pd-points { list-style: none; padding: 0; margin: 0; }
.pd-points li { position: relative; padding-left: 20px; font-size: 13px; color: var(--ink-2); line-height: 2.1; }
.pd-points li::before { content: ""; position: absolute; left: 0; top: 1em; width: 8px; height: 1px; background: var(--accent); }

/* 适用场景 */
.pd-scenes { background: var(--paper-2); }
.pd-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.pd-scene { background: var(--paper-2); padding: clamp(26px, 3vw, 44px); }
.pd-scene h3 { font-family: var(--serif); font-weight: 400; font-size: 22px; margin: 0 0 12px; }
.pd-scene p { font-size: 13px; color: var(--ink-2); line-height: 2; margin: 0; }

/* 上手流程 */
.pd-steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(24px, 4vw, 60px); }
.pd-step { border-top: 2px solid var(--accent); padding-top: 24px; }
.pd-step-no { font-family: var(--num); font-size: 13px; color: var(--accent); }
.pd-step h3 { font-family: var(--serif); font-weight: 400; font-size: 24px; margin: 10px 0; }
.pd-step p { font-size: 13px; color: var(--ink-2); line-height: 2; margin: 0; }

/* 常见问题 */
.pd-faq { background: var(--paper-2); }
.pd-faq-list { max-width: 880px; }
.pd-faq-item { border-top: 1px solid var(--line); }
.pd-faq-item:last-child { border-bottom: 1px solid var(--line); }
.pd-faq-item summary { cursor: pointer; padding: 22px 30px 22px 0; font-size: 16px; font-weight: 500; list-style: none; position: relative; }
.pd-faq-item summary::-webkit-details-marker { display: none; }
.pd-faq-item summary::after { content: "+"; position: absolute; right: 4px; top: 20px; font-family: var(--num); font-size: 20px; font-weight: 400; color: var(--accent); }
.pd-faq-item[open] summary::after { content: "−"; }
.pd-faq-item p { font-size: 14px; color: var(--ink-2); line-height: 2.1; margin: 0 0 24px; max-width: 60em; }

/* 收束 CTA */
.pd-cta { background: var(--ink); color: #F3EFE8; text-align: center; padding-block: clamp(100px, 14vw, 190px); }
.pd-cta .pd-sec-title { color: #F7F3EC; font-size: clamp(36px, 5.5vw, 80px); }
.pd-cta-note { font-size: 14px; color: rgba(243, 239, 232, .6); margin: 22px 0 44px; }
.pd-cta .btn-solid { background: #F7F3EC; color: var(--ink); }
.pd-cta .btn-solid:hover { background: var(--accent); color: #fff; }

/* 未上架 / 加载 */
.pd-notfound { padding-block: clamp(140px, 20vw, 280px); text-align: center; }
.pd-notfound .pd-lede { margin-inline: auto; }
.pd-notfound .sec-index { display: block; }

/* ================================================================
   5 套产品页模板（同一份数据，不同版式与区块组合）
   ================================================================ */

/* 模板 1 · 旗舰长页：左右交替大图 */
[data-template="1"] .pd-feature {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(40px, 6vw, 100px); align-items: center;
  padding-block: clamp(56px, 7vw, 100px); border-top: 1px solid var(--line-soft);
}
[data-template="1"] .pd-feature:nth-child(even) .pd-feature-media { order: 2; }

/* 模板 2 · 沉浸大图：全宽 Hero 图 + 全宽功能卡流 */
[data-template="2"] .pd-hero-grid { grid-template-columns: 1fr; }
[data-template="2"] .pd-hero-visual .media-slot { aspect-ratio: 21 / 9; }
[data-template="2"] .pd-feature { padding-block: clamp(40px, 5vw, 72px); border-bottom: 1px solid var(--line-soft); }
[data-template="2"] .pd-feature-wide { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .85fr); gap: clamp(36px, 6vw, 90px); align-items: center; }
[data-template="2"] .pd-feature:nth-child(even) .pd-feature-wide > .pd-feature-body { order: 2; }

/* 模板 3 · 功能网格：紧凑首屏 + 三列宫格 */
[data-template="3"] .pd-hero { padding-bottom: clamp(48px, 6vw, 80px); }
[data-template="3"] .pd-title { font-size: clamp(40px, 5vw, 72px); }
[data-template="3"] .pd-feature-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
[data-template="3"] .pd-feature { background: var(--white); padding: clamp(30px, 3.5vw, 52px); }
[data-template="3"] .pd-feature-title { font-size: clamp(22px, 2vw, 30px); }
[data-template="3"] .pd-feature-media { display: none; }

/* 模板 4 · 流程时间线 */
[data-template="4"] .pd-feature-list { position: relative; padding-left: clamp(28px, 4vw, 56px); }
[data-template="4"] .pd-feature-list::before { content: ""; position: absolute; left: 5px; top: 0; bottom: 0; width: 1px; background: var(--line); }
[data-template="4"] .pd-feature { position: relative; padding-block: clamp(32px, 4vw, 56px); border-bottom: 1px solid var(--line-soft); }
[data-template="4"] .pd-feature-dot {
  position: absolute; left: calc(-1 * clamp(28px, 4vw, 56px)); top: clamp(38px, 4.5vw, 62px);
  width: 11px; height: 11px; border: 1px solid var(--accent); border-radius: 50%; background: var(--paper);
}
[data-template="4"] .pd-feature-media { display: none; }
[data-template="4"] .pd-features .pd-sec-title { max-width: 20em; }

/* 模板 5 · 极简单页：单列要点，无图 */
[data-template="5"] .pd-hero-visual { display: none; }
[data-template="5"] .pd-hero-grid { grid-template-columns: 1fr; }
[data-template="5"] .pd-lede { max-width: 44em; }
[data-template="5"] .pd-feature { display: grid; grid-template-columns: 80px minmax(0, 1fr); gap: 24px; border-top: 1px solid var(--line-soft); padding-block: clamp(30px, 4vw, 48px); }
[data-template="5"] .pd-feature-media { display: none; }
[data-template="5"] .pd-feature-title { font-size: clamp(22px, 2.4vw, 32px); }

/* 模板预览条（仅 ?preview=1 时由 JS 添加） */
.pd-preview-bar {
  position: fixed; top: calc(var(--header-h) + 8px); right: 16px; z-index: 60;
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
  background: rgba(255, 255, 255, .95); border: 1px solid var(--line);
  padding: 8px 10px; box-shadow: 0 8px 30px rgba(28, 27, 24, .1);
  font-size: 11px; letter-spacing: .1em; color: var(--muted); max-width: calc(100% - 32px);
}
.pd-preview-btn { border: 1px solid var(--line); background: none; padding: 5px 9px; font-size: 11px; color: var(--ink-2); }
.pd-preview-btn:hover { border-color: var(--accent); color: var(--accent); }
.pd-preview-btn.is-active { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .pd-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
  .pd-hero-grid { grid-template-columns: 1fr; }
  .pd-hero-visual .media-slot { aspect-ratio: 4 / 3; }
  [data-template="1"] .pd-feature,
  [data-template="2"] .pd-feature-wide { grid-template-columns: 1fr; gap: 28px; }
  [data-template="1"] .pd-feature:nth-child(even) .pd-feature-media,
  [data-template="2"] .pd-feature:nth-child(even) .pd-feature-wide > .pd-feature-body { order: 0; }
  [data-template="3"] .pd-feature-list { grid-template-columns: 1fr; }
  [data-template="2"] .pd-hero-visual .media-slot { aspect-ratio: 16 / 9; }
  .pd-steps { grid-template-columns: 1fr; }
  .pd-preview-bar { top: auto; bottom: 12px; right: 12px; left: 12px; justify-content: center; }
}
@media (max-width: 520px) {
  .pd-grid { grid-template-columns: 1fr; }
  .pd-stats .shell { flex-wrap: wrap; }
  .pd-stat { flex: 1 0 33%; border-right: 0; }
  [data-template="5"] .pd-feature { grid-template-columns: 44px minmax(0, 1fr); gap: 14px; }
}