/* 模具设计.中国 —— 独立样式（墨绿 + 铜金，工程图纸网格气质） */
:root {
  --mdd-ink: #12251f;
  --mdd-green: #0e3b31;
  --mdd-green-2: #145443;
  --mdd-copper: #b8732c;
  --mdd-copper-soft: #e8d9c3;
  --mdd-paper: #f7f5f0;
  --mdd-card: #ffffff;
  --mdd-line: #ddd6c8;
  --mdd-mut: #5c6b63;
  --mdd-inset: 0px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--mdd-ink);
  background: var(--mdd-paper);
  line-height: 1.85;
}
a { color: var(--mdd-green-2); text-decoration: none; }
a:hover { color: var(--mdd-copper); }
i { font-style: normal; }

/* 顶栏 */
.mdd-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(14, 59, 49, .96);
  backdrop-filter: blur(6px);
}
.mdd-header-in {
  max-width: 1180px; margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; justify-content: space-between; height: 60px;
}
.mdd-logo { color: #fff; font-size: 20px; font-weight: 700; letter-spacing: 1px; }
.mdd-logo i { color: var(--mdd-copper-soft); font-size: 14px; }
.mdd-nav { display: flex; gap: 4px; }
.mdd-nav a {
  color: #d9e4de; font-size: 14px; padding: 8px 12px; border-radius: 4px;
}
.mdd-nav a:hover { background: rgba(255,255,255,.08); color: #fff; }
.mdd-burger { display: none; background: none; border: 1px solid rgba(255,255,255,.4); border-radius: 6px; padding: 8px 10px; cursor: pointer; }
.mdd-burger span { display: block; width: 18px; height: 2px; background: #fff; margin: 4px 0; }

/* 主体 */
.mdd-main { min-height: 60vh; }
.mdd-wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* 面包屑：与正文 H2 左缘天然对齐（同一容器、同一内边距） */
.mdd-crumb { padding: 18px 0 0; font-size: 13px; color: var(--mdd-mut); }
.mdd-crumb a { color: var(--mdd-mut); }
.mdd-crumb-sep { margin: 0 8px; color: #b9b2a2; }

/* 详情布局：左侧目录 */
.mdd-detail { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 40px; padding: 18px 0 60px; }
.mdd-toc { align-self: start; position: sticky; top: 84px; }
.mdd-toc-h { font-size: 13px; font-weight: 700; color: var(--mdd-green); border-left: 3px solid var(--mdd-copper); padding-left: 10px; margin-bottom: 10px; }
.mdd-toc nav { display: flex; flex-direction: column; }
.mdd-toc nav a { font-size: 13px; padding: 6px 0 6px 13px; border-left: 1px solid var(--mdd-line); color: var(--mdd-mut); }
.mdd-toc nav a:hover { color: var(--mdd-copper); border-left-color: var(--mdd-copper); }
.mdd-toc-m { display: none; margin: 14px 0; border: 1px solid var(--mdd-line); border-radius: 8px; background: var(--mdd-card); }
.mdd-toc-m summary { padding: 10px 14px; font-size: 14px; font-weight: 600; cursor: pointer; color: var(--mdd-green); }
.mdd-toc-m nav { display: flex; flex-direction: column; padding: 0 14px 12px; }

/* 文章主体 */
.mdd-article h1 { font-size: 27px; line-height: 1.45; color: var(--mdd-ink); margin: 6px 0 10px; }
.mdd-meta { font-size: 13px; color: var(--mdd-mut); display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 10px; }
.mdd-tags em { font-style: normal; font-size: 12px; background: #ece7db; color: var(--mdd-green); border-radius: 3px; padding: 2px 8px; margin-right: 6px; }
.mdd-lead { color: var(--mdd-mut); margin: 8px 0 20px; }

.mdd-summary {
  background: linear-gradient(135deg, #eef4ef, #f6efe2);
  border-left: 4px solid var(--mdd-copper);
  border-radius: 0 8px 8px 0; padding: 14px 18px; margin-bottom: 18px;
}
.mdd-summary-tag { display: inline-block; font-size: 12px; font-weight: 700; color: var(--mdd-copper); margin-right: 8px; letter-spacing: 2px; }
.mdd-summary p { display: inline; font-size: 15px; }

.mdd-article h2 {
  font-size: 20px; color: var(--mdd-green); margin: 34px 0 14px;
  padding-left: 14px; border-left: 4px solid var(--mdd-copper); line-height: 1.5;
}
.mdd-article h3 { font-size: 16px; margin: 18px 0 8px; color: var(--mdd-green-2); }
.mdd-article p { margin: 0 0 14px; font-size: 15.5px; }
.mdd-article ul { margin: 0 0 14px 22px; }
.mdd-article li { margin-bottom: 6px; font-size: 15px; }

.mdd-table { overflow-x: auto; margin: 16px 0 20px; }
.mdd-table table { width: 100%; border-collapse: collapse; background: var(--mdd-card); font-size: 14px; }
.mdd-table th { background: var(--mdd-green); color: #fff; font-weight: 600; }
.mdd-table th, .mdd-table td { border: 1px solid var(--mdd-line); padding: 9px 12px; text-align: left; vertical-align: top; }
.mdd-table tbody tr:nth-child(even) { background: #f4f1e9; }

.mdd-conclusion {
  background: var(--mdd-card); border: 1px solid var(--mdd-line);
  border-top: 4px solid var(--mdd-copper); border-radius: 8px; padding: 6px 22px 18px; margin: 26px 0;
}

.mdd-faq { background: var(--mdd-card); border: 1px solid var(--mdd-line); border-radius: 8px; margin-bottom: 10px; }
.mdd-faq summary { padding: 12px 16px; cursor: pointer; font-weight: 600; font-size: 15px; color: var(--mdd-green); list-style: none; position: relative; }
.mdd-faq summary::after { content: "+"; position: absolute; right: 16px; color: var(--mdd-copper); font-weight: 700; }
.mdd-faq[open] summary::after { content: "−"; }
.mdd-faq-a { padding: 0 16px 12px; font-size: 14.5px; color: #33443c; }

.mdd-rel-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin-top: 14px; }
.mdd-rel-card { display: block; background: var(--mdd-card); border: 1px solid var(--mdd-line); border-radius: 8px; padding: 14px 16px; }
.mdd-rel-card strong { display: block; font-size: 14.5px; color: var(--mdd-green); margin-bottom: 6px; }
.mdd-rel-card span { font-size: 13px; color: var(--mdd-mut); }
.mdd-rel-card:hover { border-color: var(--mdd-copper); }

/* 列表页 */
.mdd-list { display: grid; gap: 12px; }
.mdd-li { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; background: var(--mdd-card); border: 1px solid var(--mdd-line); border-radius: 8px; padding: 14px 18px; }
.mdd-li strong { grid-column: 1 / 2; font-size: 15.5px; color: var(--mdd-green); }
.mdd-li span { grid-column: 1 / 2; font-size: 13px; color: var(--mdd-mut); }
.mdd-li i { grid-column: 2 / 3; grid-row: 1 / 3; align-self: center; font-size: 12px; color: #a39c8c; }

.mdd-fold { background: var(--mdd-card); border: 1px solid var(--mdd-line); border-radius: 8px; margin-bottom: 12px; overflow: hidden; }
.mdd-fold-h { width: 100%; text-align: left; background: none; border: none; padding: 13px 18px; font-size: 15.5px; font-weight: 700; color: var(--mdd-green); cursor: pointer; display: flex; justify-content: space-between; }
.mdd-fold-h i { color: var(--mdd-copper); font-weight: 600; }
.mdd-fold-b { display: flex; flex-direction: column; padding: 0 18px 12px; }
.mdd-fold-b a { padding: 8px 0; border-top: 1px dashed var(--mdd-line); font-size: 14.5px; }
.mdd-closed .mdd-fold-b { display: none; }

/* 首页 */
.mdd-body-home .mdd-crumb { visibility: hidden; height: 0; padding: 0; }
.mdd-hero {
  background:
    repeating-linear-gradient(0deg, rgba(255,255,255,.045) 0 1px, transparent 1px 42px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.045) 0 1px, transparent 1px 42px),
    linear-gradient(150deg, #0c2f27, #145443 62%, #1d6b52);
  color: #fff; padding: 72px 0 66px;
}
.mdd-hero h1 { font-size: 32px; line-height: 1.5; max-width: 820px; margin-bottom: 16px; }
.mdd-hero-sub { color: #cfe0d6; max-width: 760px; font-size: 16px; margin-bottom: 26px; }
.mdd-hero-cta { display: flex; gap: 14px; }
.mdd-btn { background: var(--mdd-copper); color: #fff; padding: 11px 26px; border-radius: 6px; font-size: 15px; font-weight: 600; }
.mdd-btn:hover { background: #a26122; color: #fff; }
.mdd-btn-ghost { background: transparent; border: 1px solid rgba(255,255,255,.5); }
.mdd-btn-ghost:hover { background: rgba(255,255,255,.1); }
.mdd-block { margin-top: 44px; }
.mdd-h2line { font-size: 22px; color: var(--mdd-green); padding-left: 14px; border-left: 4px solid var(--mdd-copper); margin-bottom: 18px; }
.mdd-grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.mdd-feat { background: var(--mdd-card); border: 1px solid var(--mdd-line); border-radius: 10px; padding: 20px; }
.mdd-feat b { color: var(--mdd-copper); font-size: 16px; display: block; margin-bottom: 8px; }
.mdd-feat p { font-size: 14px; color: #42524a; }
.mdd-card { background: var(--mdd-card); border: 1px solid var(--mdd-line); border-radius: 10px; padding: 18px; display: flex; flex-direction: column; gap: 8px; }
.mdd-card strong { font-size: 15px; color: var(--mdd-green); line-height: 1.5; }
.mdd-card p { font-size: 13.5px; color: var(--mdd-mut); flex: 1; }
.mdd-card i { font-size: 12px; color: var(--mdd-copper); }
.mdd-more { margin-top: 16px; font-size: 14px; }
.mdd-bound { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.mdd-bound > div { background: var(--mdd-card); border-radius: 10px; padding: 20px 22px; border: 1px solid var(--mdd-line); }
.mdd-bound b { color: var(--mdd-green); font-size: 16px; }
.mdd-bound > div:first-child b { color: var(--mdd-copper); }
.mdd-bound ul { margin: 10px 0 0 20px; font-size: 14.5px; }
.mdd-prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.mdd-prod { background: var(--mdd-card); border: 1px solid var(--mdd-line); border-radius: 8px; padding: 14px 16px; }
.mdd-prod strong { display: block; font-size: 14.5px; color: var(--mdd-green); margin-bottom: 4px; }
.mdd-prod span { font-size: 12.5px; color: var(--mdd-mut); }
.mdd-prod:hover { border-color: var(--mdd-copper); }

/* 页脚 */
.mdd-footer { background: var(--mdd-green); color: #c8d8cf; margin-top: 60px; padding: 40px 0 30px; font-size: 13.5px; }
.mdd-foot-brand { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.mdd-foot-brand i { color: var(--mdd-copper-soft); font-size: 14px; }
.mdd-foot-nav { display: flex; flex-wrap: wrap; gap: 4px 18px; margin: 14px 0; }
.mdd-foot-nav a { color: #c8d8cf; }
.mdd-foot-fine { color: #8ba598; font-size: 12.5px; }

/* 悬浮胶囊 */
.mdd-float { position: fixed; right: 18px; top: 50%; transform: translateY(-50%); z-index: 70; display: flex; flex-direction: column; gap: 10px; }
.mdd-pill { writing-mode: horizontal-tb; border: none; border-radius: 999px; padding: 12px 16px; font-size: 13.5px; font-weight: 600; cursor: pointer; color: #fff; box-shadow: 0 4px 14px rgba(18, 37, 31, .25); }
.mdd-pill-top { background: var(--mdd-green-2); }
.mdd-pill-wx { background: var(--mdd-copper); }

/* 名片弹窗 300x500 */
.mdd-modal { display: none; position: fixed; inset: 0; z-index: 90; background: rgba(10, 24, 19, .62); align-items: center; justify-content: center; }
.mdd-modal.mdd-show { display: flex; }
.mdd-modal-card { position: relative; width: 300px; height: 500px; background: #fff; border-radius: 10px; overflow: hidden; box-shadow: 0 18px 50px rgba(0,0,0,.4); }
.mdd-modal-card img { width: 300px; height: 500px; object-fit: contain; background: #fff; display: block; }
.mdd-modal-close { position: absolute; top: 6px; right: 6px; width: 30px; height: 30px; border-radius: 50%; border: none; background: rgba(18,37,31,.7); color: #fff; font-size: 17px; cursor: pointer; }

/* 移动端 */
@media (max-width: 860px) {
  .mdd-burger { display: block; }
  .mdd-nav {
    display: none; position: absolute; top: 60px; left: 0; right: 0;
    background: var(--mdd-green); flex-direction: column; padding: 8px 14px 14px;
  }
  .mdd-nav.mdd-open { display: flex; }
  .mdd-nav a { padding: 12px 10px; border-bottom: 1px solid rgba(255,255,255,.08); }
  .mdd-detail { grid-template-columns: 1fr; gap: 0; }
  .mdd-toc { display: none; }
  .mdd-toc-m { display: block; }
  .mdd-article h1 { font-size: 22px; }
  .mdd-hero h1 { font-size: 24px; }
  .mdd-grid3, .mdd-bound { grid-template-columns: 1fr; }
  .mdd-prod-grid { grid-template-columns: 1fr 1fr; }
  .mdd-float { right: 10px; }
  .mdd-pill { padding: 10px 12px; font-size: 12.5px; }
}