/* Kunfreight 鲲运科技 门户 · 货运工具 / 知识库 共享样式
   归属：public/home/tools/tools.css（工具线与知识库 7 个页面共用）
   设计上与 /home/home.css 解耦：本文件自带全部样式，home.css 缺失也不会破版。
   最后更新：2026-10-11 */

:root {
  --kf-navy: #091d2d;
  --kf-brand: #193b66;
  --kf-ink: #172f40;
  --kf-muted: #6b7f8c;
  --kf-line: #e3e9ed;
  --kf-mint: #198365;
  --kf-amber: #8a5f16;
  --kf-amber-bg: #fff8e6;
  --kf-amber-line: #f0e0b8;
  --kf-bg: #f6f8fa;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--kf-bg);
  color: var(--kf-ink);
  font: 15px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei",
        "PingFang SC", "Hiragino Sans GB", sans-serif;
}

a { color: var(--kf-brand); }
a:hover { color: var(--kf-mint); }

[hidden] { display: none !important; }

.kf-wrap { max-width: 1240px; margin: 0 auto; padding: 30px 28px 8px; }

h1 { font-size: 30px; line-height: 1.3; margin: 0 0 12px; letter-spacing: -.5px; }
h2 {
  font-size: 19px;
  margin: 34px 0 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--kf-line);
}
h3 { font-size: 15px; margin: 20px 0 6px; }
p { margin: 0 0 12px; }

.kf-lead { font-size: 15px; color: #4a6272; max-width: 920px; margin: 0 0 16px; }

.kf-meta {
  font-size: 12px;
  color: var(--kf-muted);
  border-top: 1px solid var(--kf-line);
  border-bottom: 1px solid var(--kf-line);
  padding: 9px 0;
  margin: 0 0 8px;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
.kf-meta b { font-weight: 650; color: #3f5563; }

.kf-note {
  font-size: 13px;
  color: var(--kf-amber);
  background: var(--kf-amber-bg);
  border: 1px solid var(--kf-amber-line);
  border-radius: 6px;
  padding: 11px 14px;
  margin: 14px 0;
  line-height: 1.75;
}
.kf-note strong { color: #6f4c11; }
.kf-note ul { margin: 6px 0 0; padding-left: 20px; }
.kf-note li { margin: 2px 0; }

.kf-todo {
  display: inline-block;
  background: #eef2f5;
  color: #5a6f7d;
  border: 1px dashed #c3d0d9;
  border-radius: 4px;
  padding: 1px 7px;
  font-size: 12px;
  white-space: nowrap;
}

.kf-table-wrap { overflow-x: auto; margin: 12px 0 6px; -webkit-overflow-scrolling: touch; }

table.kf-table {
  border-collapse: collapse;
  width: 100%;
  min-width: 720px;
  background: #fff;
  font-size: 13px;
}
table.kf-table caption {
  text-align: left;
  font-size: 12px;
  color: var(--kf-muted);
  padding: 0 0 8px;
}
table.kf-table th,
table.kf-table td {
  border: 1px solid var(--kf-line);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
  line-height: 1.6;
}
table.kf-table thead th { background: #eef4f7; color: #2a5568; font-weight: 650; white-space: nowrap; }
table.kf-table tbody th { background: #fafcfd; font-weight: 650; white-space: nowrap; }
table.kf-table tbody tr:nth-child(even) td { background: #fcfdfe; }
table.kf-table td.num { white-space: nowrap; font-variant-numeric: tabular-nums; }
.kf-src { color: var(--kf-muted); font-size: 11.5px; }

.kf-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 14px; margin: 14px 0; }
.kf-card {
  background: #fff;
  border: 1px solid var(--kf-line);
  border-radius: 7px;
  padding: 14px 16px;
}
.kf-card h3 { margin-top: 0; }
.kf-card p:last-child, .kf-card ul:last-child { margin-bottom: 0; }
.kf-card ul { margin: 0 0 8px; padding-left: 20px; }
.kf-card li { margin: 3px 0; }

.kf-faq { margin: 12px 0; }
.kf-faq dt { font-weight: 650; margin: 14px 0 4px; }
.kf-faq dd { margin: 0 0 4px; padding-left: 0; color: #33505f; }

.kf-sources { font-size: 12.5px; color: #48606e; line-height: 1.85; }
.kf-sources li { margin: 3px 0; word-break: break-word; }

.kf-footer {
  max-width: 1240px;
  margin: 26px auto 0;
  padding: 18px 28px 44px;
  font-size: 11.5px;
  color: var(--kf-muted);
  border-top: 1px solid var(--kf-line);
  line-height: 1.8;
}
.kf-footer p { margin: 0 0 6px; }

/* ---- 登录门槛（知识库 4 页）---------------------------------------------
   默认隐藏受保护内容；tools.js 校验 /api/me 通过后给 <html> 加 .kf-authed。
   JS 未执行或校验失败时内容保持隐藏（fail-closed）。样式不内联，符合 CSP。 */
.kf-protected { display: none; }

html.kf-authed .kf-content { display: block; }
html.kf-authed .kf-userbar { display: flex; }
html.kf-authed .kf-checking { display: none; }

.kf-checking {
  margin: 22px 0;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid var(--kf-line);
  border-radius: 7px;
  color: var(--kf-muted);
  font-size: 13px;
}

.kf-gateerr {
  margin: 22px 0;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid var(--kf-amber-line);
  border-radius: 7px;
  color: var(--kf-amber);
  font-size: 13px;
  line-height: 1.8;
}

.kf-userbar {
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  background: #fff;
  border: 1px solid var(--kf-line);
  border-radius: 7px;
  padding: 10px 14px;
  margin: 6px 0 4px;
  font-size: 13px;
}
.kf-userbar .kf-who { color: var(--kf-muted); }
.kf-userbar .kf-name { font-weight: 650; color: var(--kf-ink); }

.kf-btn {
  font: inherit;
  font-size: 12.5px;
  font-weight: 600;
  padding: 7px 13px;
  border: 1px solid var(--kf-brand);
  border-radius: 5px;
  background: var(--kf-brand);
  color: #fff;
  cursor: pointer;
}
.kf-btn:hover { background: #122c4d; }
.kf-btn[disabled] { opacity: .6; cursor: default; }

.kf-msg { font-size: 12px; color: var(--kf-amber); }

@media (max-width: 640px) {
  .kf-wrap { padding: 20px 16px 6px; }
  .kf-footer { padding: 16px 16px 36px; }
  h1 { font-size: 23px; }
  h2 { font-size: 17px; }
  .kf-grid { grid-template-columns: 1fr; }
}