/* ========== 内页 / 文章共用样式（依赖 styles.css 的变量与基础类） ========== */

.sub-hero {
  position: relative;
  overflow: hidden;
  padding: 40px 0 36px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(55% 60% at 88% 0%, rgba(6, 182, 212, .14), transparent 62%),
    radial-gradient(45% 50% at 5% 100%, rgba(251, 113, 133, .07), transparent 62%),
    linear-gradient(180deg, #f6f9fc 0%, #eef6fa 100%);
}
.sub-hero h1 { font-size: clamp(28px, 4.6vw, 42px); font-weight: 900; }
.sub-hero .lead { margin-top: 14px; max-width: 46rem; color: var(--text-soft); font-size: 16px; }
.sub-hero .meta-line { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 10px 18px; font-size: 12px; color: var(--text-mute); }

.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 16px; font-size: 12px; color: var(--text-mute); }
.breadcrumb a { color: var(--brand); font-weight: 600; }
.breadcrumb span[aria-current] { color: var(--text-soft); }

/* 结论前置框 */
.answer-box {
  margin: 26px 0;
  padding: 20px 22px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  border-left: 4px solid var(--brand);
  background: linear-gradient(90deg, var(--brand-soft), #fff 70%);
}
.answer-box .label {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .12em;
  color: var(--brand);
}
.answer-box p { margin: 0; font-size: 15.5px; color: var(--ink); font-weight: 600; line-height: 1.75; }

/* 正文排版 */
.article-wrap { padding: 40px 0 64px; display: grid; gap: 36px; }
.article-body { min-width: 0; max-width: 48rem; }
.article-body h2 { margin: 38px 0 14px; font-size: clamp(22px, 3.2vw, 28px); font-weight: 800; scroll-margin-top: 90px; }
.article-body h3 { margin: 26px 0 10px; font-size: 19px; font-weight: 800; }
.article-body p { margin: 12px 0; font-size: 15.5px; color: var(--ink-2); }
.article-body ul, .article-body ol { margin: 12px 0; padding-left: 22px; color: var(--ink-2); font-size: 15.5px; }
.article-body li { margin: 7px 0; }
.article-body strong { color: var(--ink); }
.article-body a { color: var(--brand); font-weight: 700; border-bottom: 1px solid rgba(14, 116, 144, .3); }
.article-body blockquote { margin: 18px 0; padding: 14px 18px; border-left: 3px solid var(--brand-mid); background: #fff; border-radius: 0 var(--r-md) var(--r-md) 0; color: var(--text-soft); font-size: 14.5px; }

/* 表格 */
.table-wrap { margin: 18px 0; overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-lg); background: #fff; box-shadow: var(--shadow-soft); }
.article-body table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 520px; }
.article-body th, .article-body td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.article-body thead th { background: #f8fafc; font-family: var(--font-d); font-weight: 700; color: var(--ink); white-space: nowrap; }
.article-body tbody tr:last-child td { border-bottom: 0; }
.article-body td.num { font-variant-numeric: tabular-nums; white-space: nowrap; }

/* 文章元信息 */
.article-meta { display: flex; flex-wrap: wrap; gap: 8px 16px; margin: 18px 0 0; font-size: 12px; color: var(--text-mute); }

/* 侧栏 */
.article-aside { display: grid; gap: 18px; align-content: start; }
.toc, .aside-card {
  padding: 20px 22px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-soft);
}
.toc h2, .aside-card h2 { font-size: 14px; margin-bottom: 12px; letter-spacing: .02em; }
.toc a { display: block; padding: 5px 0; font-size: 13px; color: var(--text-soft); }
.toc a:hover { color: var(--brand); }
.aside-card p { font-size: 13px; color: var(--text-soft); margin: 0 0 14px; }
.aside-card .btn { width: 100%; }
.aside-links { display: grid; gap: 8px; }
.aside-links a { font-size: 13px; color: var(--text-soft); }
.aside-links a:hover { color: var(--brand); }

/* 产品事实卡 */
.fact-card {
  margin: 34px 0 0;
  padding: 22px 24px;
  border-radius: var(--r-lg);
  border: 1px dashed rgba(14, 116, 144, .35);
  background: #fbfeff;
}
.fact-card h2 { margin: 0 0 14px; font-size: 15px; }
.fact-card dl { display: grid; grid-template-columns: 5.6em 1fr; gap: 8px 12px; margin: 0; font-size: 13px; }
.fact-card dt { color: var(--text-mute); }
.fact-card dd { margin: 0; color: var(--ink-2); }
.fact-card dd a { color: var(--brand); font-weight: 700; }

/* 文章列表 */
.article-grid { display: grid; gap: 18px; margin-top: 8px; }
.article-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 26px;
  border-radius: var(--r-xl);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-soft);
  transition: transform 160ms ease, border-color 160ms ease;
}
.article-card:hover { transform: translateY(-2px); border-color: var(--brand); }
.article-card .kicker { font-size: 11px; font-weight: 800; letter-spacing: .1em; color: var(--brand); }
.article-card h3 { font-size: 18px; font-weight: 800; line-height: 1.35; }
.article-card p { font-size: 14px; color: var(--text-soft); }
.article-card .more { margin-top: auto; font-size: 13px; font-weight: 800; color: var(--brand); }
.article-card .date { font-size: 12px; color: var(--text-mute); }

.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { display: inline-block; padding: 4px 10px; border-radius: 999px; background: var(--brand-soft); color: var(--brand-deep); font-size: 12px; font-weight: 700; }

/* 套餐表 */
.price-table-wrap { margin: 22px 0; overflow-x: auto; border-radius: var(--r-xl); border: 1px solid var(--line); box-shadow: var(--shadow-soft); background: #fff; }
.price-table { width: 100%; border-collapse: collapse; min-width: 720px; font-size: 14px; }
.price-table th, .price-table td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.price-table thead th { background: #f8fafc; font-family: var(--font-d); font-weight: 800; }
.price-table thead th.hot { background: linear-gradient(180deg, var(--brand-soft), #fff); color: var(--brand-deep); }
.price-table td.hot { background: rgba(236, 254, 255, .55); }
.price-table .big { display: block; font-family: var(--font-d); font-size: 22px; font-weight: 800; color: var(--ink); }
.price-table .small { display: block; margin-top: 2px; font-size: 12px; color: var(--text-mute); }
.price-table tbody tr:last-child td { border-bottom: 0; }

/* 内联 CTA */
.inline-cta {
  margin: 30px 0;
  padding: 22px 24px;
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, #0b1727, #0c4a6e);
  color: #e2e8f0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 20px;
}
.inline-cta strong { display: block; font-size: 16px; color: #fff; }
.inline-cta span { font-size: 13px; color: #cbd5e1; }
.inline-cta .btn { margin-left: auto; background: #fff; color: var(--brand-deep); }

/* 相关阅读 */
.related { margin-top: 36px; }
.related h2 { font-size: 18px; margin-bottom: 14px; }
.related ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.related li { padding-left: 0; }
.related a { display: block; padding: 12px 16px; border: 1px solid var(--line); border-radius: var(--r-md); background: #fff; font-size: 14px; color: var(--ink-2); font-weight: 600; }
.related a:hover { border-color: var(--brand); color: var(--brand); }

@media (min-width: 720px) {
  .article-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .article-wrap { grid-template-columns: minmax(0, 1fr) 300px; gap: 48px; }
  .article-aside { position: sticky; top: calc(var(--header-h) + 16px); }
  .article-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 767px) {
  .inline-cta .btn { margin-left: 0; width: 100%; }
  .fact-card dl { grid-template-columns: 1fr; gap: 2px; }
  .fact-card dt { margin-top: 8px; }
}

/* 首页定价卡：等高 + 按钮底部对齐 */
#price .price-grid { align-items: stretch; }
#price .price-card { display: flex; flex-direction: column; }
#price .price-card .btn { margin-top: auto; align-self: flex-start; }