/* TokenPlan 中文站样式: 系统字体栈, 无外部依赖, 移动端适配 */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --ink: #1a1d23; --muted: #6b7280; --line: #e5e7eb;
  --brand: #2563eb; --bg: #fafafa; --card: #ffffff;
  --down: #16a34a; --up: #dc2626;
}
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  color: var(--ink); background: var(--bg); line-height: 1.65;
}
.wrap { max-width: 980px; margin: 0 auto; padding: 0 16px; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: .92em; background: #eef2ff; padding: 1px 6px; border-radius: 5px; }

/* 页头页脚 */
.site-header { background: var(--card); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding-top: 14px; padding-bottom: 14px; }
.logo { font-weight: 800; font-size: 20px; color: var(--ink); letter-spacing: .5px; }
.logo:hover { text-decoration: none; color: var(--brand); }
.site-header nav { display: flex; gap: 4px; flex-wrap: wrap; }
.site-header nav a { padding: 6px 12px; border-radius: 8px; color: var(--muted); font-size: 15px; }
.site-header nav a.on, .site-header nav a:hover { color: var(--brand); background: #eff6ff; text-decoration: none; }
.site-footer { border-top: 1px solid var(--line); margin-top: 48px; padding: 24px 0 40px; color: var(--muted); font-size: 13px; }
.site-footer .wrap p { margin: 4px 0; }
main.wrap { padding-top: 28px; padding-bottom: 20px; }

/* 首页 */
.hero { padding: 26px 0 8px; }
.hero h1 { font-size: clamp(26px, 5vw, 40px); line-height: 1.25; letter-spacing: .5px; }
.hero .sub { color: var(--muted); margin: 14px 0 18px; max-width: 46em; }
.cta { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.btn { display: inline-block; background: var(--brand); color: #fff; padding: 10px 22px; border-radius: 10px; font-weight: 600; }
.btn:hover { text-decoration: none; filter: brightness(1.08); }
.btn.ghost { background: var(--card); color: var(--brand); border: 1px solid var(--line); }
.meta { color: var(--muted); font-size: 13.5px; }

.block { margin-top: 40px; }
.block h2, .article h2 { font-size: 21px; margin-bottom: 12px; }
.block h3 { font-size: 17px; margin: 18px 0 8px; }
.more { margin-top: 10px; }

/* 变动列表 */
.change-list { list-style: none; }
.change-list li {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px;
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 14px; margin-bottom: 8px; font-size: 14.5px;
}
.change-list .date { color: var(--muted); font-size: 13px; min-width: 82px; }
.change-list .vendor { font-weight: 700; }
.change-list .model { font-family: ui-monospace, Menlo, monospace; font-size: 13px; color: #475569; }
.change-list .desc { color: var(--ink); }
.badge { font-size: 12.5px; font-weight: 700; padding: 1px 8px; border-radius: 999px; }
.badge.down { color: var(--down); background: #f0fdf4; border: 1px solid #bbf7d0; }
.badge.up { color: var(--up); background: #fef2f2; border: 1px solid #fecaca; }
.empty { color: var(--muted); background: var(--card); border: 1px dashed var(--line); border-radius: 10px; padding: 18px; }

/* 厂商卡片 */
.vendor-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.vendor-card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.vendor-card h3 { font-size: 16px; margin-bottom: 4px; }
.vendor-card .count { font-size: 13px; color: var(--muted); }
.vendor-card .note { font-size: 12.5px; color: var(--muted); margin-top: 6px; }
.tag { display: inline-block; vertical-align: 2px; font-size: 11px; font-weight: 600; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 0 8px; margin-left: 6px; }
.tag.warn { color: #b45309; border-color: #fcd34d; background: #fffbeb; }

/* 价格表 */
.vendor-block { margin-top: 36px; }
.vendor-block h2 { font-size: 20px; }
.table-scroll { overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.price-table { border-collapse: collapse; width: 100%; font-size: 14px; }
.price-table th, .price-table td { padding: 10px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.price-table thead th { background: #f8fafc; font-size: 13px; color: var(--muted); font-weight: 600; white-space: nowrap; }
.price-table tbody tr:last-child td { border-bottom: none; }
.price-table .mid code { white-space: nowrap; }
.price-table .ctx { color: var(--muted); white-space: nowrap; font-size: 13px; }
.pitems { min-width: 260px; }
.pi { display: flex; gap: 12px; justify-content: space-between; padding: 1.5px 0; }
.pi .pl { color: var(--muted); }
.pi b { font-weight: 650; font-variant-numeric: tabular-nums; }

/* 文章 */
.article { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 30px clamp(18px, 4vw, 40px); max-width: 52em; margin-top: 8px; }
.article h1 { font-size: 26px; line-height: 1.3; margin-bottom: 8px; }
.article h2 { margin-top: 28px; }
.article p { margin: 12px 0; }
.article ul { margin: 12px 0 12px 22px; }
.formula { background: #f1f5f9; border-left: 3px solid var(--brand); padding: 10px 14px; border-radius: 0 8px 8px 0; font-size: 14.5px; overflow-x: auto; }
.nf { text-align: center; padding: 80px 0; }
.nf h1 { font-size: 64px; color: var(--brand); }
.nf .btn { margin: 4px; }

/* 套餐对比 */
.crumb { color: var(--muted); font-size: 13.5px; margin-bottom: 8px; }
.cat-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 18px 0 6px; }
.cat-card { display: flex; flex-direction: column; gap: 4px; background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--brand); border-radius: 12px; padding: 14px 16px; color: var(--ink); }
.cat-card:hover { text-decoration: none; border-left-color: var(--brand); box-shadow: 0 2px 10px rgba(37,99,235,.08); }
.cat-card b { font-size: 16px; color: var(--brand); }
.cat-card span { font-size: 13px; color: var(--muted); }
.pl-name { color: var(--muted); font-weight: 400; font-size: .88em; }
.pl-price b { font-variant-numeric: tabular-nums; }
.price-table.kv td.k { width: 96px; color: var(--muted); font-size: 13px; background: #f8fafc; }
.yes { color: var(--down); font-weight: 700; }
.rules { list-style: none; }
.rules li { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; margin-bottom: 10px; font-size: 14.5px; }
.links-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.vs-link { display: inline-block; background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 4px 14px; font-size: 13.5px; color: var(--brand); }
.vs-link:hover { border-color: var(--brand); text-decoration: none; }
.vsmark { color: var(--muted); font-size: .6em; font-weight: 400; padding: 0 6px; vertical-align: middle; }
.vs-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.vs-col { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.vs-col h3 { font-size: 16px; margin-bottom: 8px; }
.vs-table td { vertical-align: top; }
.vs-table td.k { width: 88px; color: var(--muted); font-size: 13px; background: #f8fafc; }

@media (max-width: 640px) {
  .change-list .date { min-width: auto; }
  .article { padding: 22px 16px; }
  /* 窄屏价格表: 隐藏上下文列, 模型名换行, 保证价格数值无需横滚即可见 */
  .price-table th.ctx-col, .price-table td.ctx { display: none; }
  .price-table .mid code { white-space: normal; word-break: break-all; font-size: 12px; }
  .price-table th, .price-table td { padding: 8px 10px; }
  .price-table .mid { width: 96px; }
  .pitems { min-width: 0; }
  .pi { gap: 8px; font-size: 12.5px; }
  .pi .pl { flex: 1; }
  .pi b { white-space: nowrap; }
  .cat-cards, .vs-cols { grid-template-columns: 1fr; }
}