/* JASSINO 官网样式表 —— 克莱因蓝扁平化
   主色 #002FA7 ｜ 浅色主题 ｜ 响应式
   修改颜色只需改 :root 变量 */

:root {
  --klein: #002FA7;
  --klein-dark: #00247F;
  --klein-light: #E8ECF7;
  --klein-tint: #F4F6FC;
  --ink: #1A1A1A;
  --ink-soft: #55555C;
  --ink-mute: #8A8A93;
  --line: #E2E5EC;
  --bg: #FFFFFF;
  --fill: #FAFBFD;
  --gold: #C9A961;
  --warn: #C62828;
  --radius: 8px;
  --maxw: 1160px;
  --nav-h: 64px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--klein); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(180%) blur(8px);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  height: var(--nav-h); display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { display: flex; align-items: baseline; gap: 10px; text-decoration: none; }
.brand-mark { font-size: 20px; font-weight: 700; color: var(--klein); letter-spacing: .04em; }
.brand-sub { font-size: 12px; color: var(--ink-mute); letter-spacing: .08em; }
.nav-links { display: flex; gap: 22px; list-style: none; }
.nav-links a {
  font-size: 15px; color: var(--ink); padding: 6px 0; border-bottom: 2px solid transparent;
}
.nav-links a:hover { color: var(--klein); text-decoration: none; border-bottom-color: var(--klein); }
.nav-links a.active { color: var(--klein); border-bottom-color: var(--klein); font-weight: 600; }
.nav-toggle { display: none; background: none; border: 0; font-size: 22px; cursor: pointer; color: var(--klein); }

/* ---------- Hero ---------- */
.hero { background: var(--klein); color: #fff; padding: 72px 0 64px; }
.hero .wrap { max-width: var(--maxw); }
.hero-kicker { font-size: 13px; letter-spacing: .18em; opacity: .82; margin-bottom: 18px; }
.hero h1 { font-size: 38px; line-height: 1.28; font-weight: 700; margin-bottom: 18px; }
.hero-lead { font-size: 17px; line-height: 1.8; opacity: .94; max-width: 760px; }
.hero-actions { margin-top: 30px; display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 11px 24px; border-radius: var(--radius);
  font-size: 15px; font-weight: 600; border: 1px solid transparent;
}
.btn-solid { background: #fff; color: var(--klein); }
.btn-solid:hover { background: var(--klein-light); text-decoration: none; }
.btn-ghost { border-color: rgba(255,255,255,.6); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.12); text-decoration: none; }
.btn-klein { background: var(--klein); color: #fff; }
.btn-klein:hover { background: var(--klein-dark); text-decoration: none; }

/* ---------- 通用区块 ---------- */
.section { padding: 60px 0; }
.section-tint { background: var(--klein-tint); }
.section-fill { background: var(--fill); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-kicker { font-size: 12px; letter-spacing: .16em; color: var(--klein); font-weight: 700; margin-bottom: 10px; }
.section h2 { font-size: 27px; font-weight: 700; color: var(--ink); margin-bottom: 14px; line-height: 1.35; }
.section h2.klein { color: var(--klein); }
.sec-lead { color: var(--ink-soft); max-width: 820px; margin-bottom: 30px; }
.section h3 { font-size: 19px; font-weight: 700; margin: 32px 0 12px; }
.section p { margin-bottom: 14px; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 20px; }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; transition: box-shadow .18s, border-color .18s;
}
.card:hover { box-shadow: 0 6px 20px rgba(0,47,167,.10); border-color: #C9D3EA; }
.card h3 { margin-top: 0; font-size: 17px; color: var(--klein); }
.card p { font-size: 15px; color: var(--ink-soft); margin-bottom: 0; }
.card .num {
  display: inline-block; width: 34px; height: 34px; line-height: 34px; text-align: center;
  background: var(--klein-light); color: var(--klein); border-radius: 50%;
  font-weight: 700; font-size: 15px; margin-bottom: 12px;
}
.card-link { display: block; text-decoration: none; color: inherit; }
.card-link:hover { text-decoration: none; }

/* ---------- 数据条 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; text-align: center; }
.stat .v { font-size: 30px; font-weight: 700; color: var(--klein); line-height: 1.2; }
.stat .k { font-size: 13px; color: var(--ink-mute); margin-top: 6px; }
.pending .v { font-size: 15px; color: var(--ink-mute); }

/* ---------- 列表 ---------- */
.ul-check { list-style: none; padding: 0; }
.ul-check li { position: relative; padding-left: 26px; margin-bottom: 10px; font-size: 15.5px; }
.ul-check li::before {
  content: ""; position: absolute; left: 4px; top: 11px;
  width: 8px; height: 8px; background: var(--klein); border-radius: 2px;
}
.ul-num { counter-reset: n; list-style: none; padding: 0; }
.ul-num li { counter-increment: n; position: relative; padding-left: 32px; margin-bottom: 12px; }
.ul-num li::before {
  content: counter(n); position: absolute; left: 0; top: 2px;
  width: 22px; height: 22px; line-height: 22px; text-align: center;
  background: var(--klein); color: #fff; border-radius: 50%; font-size: 12px; font-weight: 700;
}

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; margin: 20px 0; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 15px; background: #fff; }
table.tbl th {
  background: var(--klein); color: #fff; font-weight: 600;
  padding: 12px 14px; text-align: left; font-size: 14.5px;
}
table.tbl td { padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.tbl tr:nth-child(even) td { background: var(--fill); }

/* ---------- FAQ ---------- */
.faq-item { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq-item:last-child { border-bottom: 0; }
.faq-q { font-size: 16.5px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.faq-a { font-size: 15.5px; color: var(--ink-soft); }

/* ---------- 面包屑 ---------- */
.crumb { font-size: 13px; color: var(--ink-mute); padding: 16px 0 0; }
.crumb a { color: var(--ink-mute); }
.crumb span { margin: 0 6px; }

/* ---------- 提示条 ---------- */
.callout {
  border-left: 4px solid var(--klein); background: var(--klein-tint);
  padding: 16px 20px; border-radius: 0 var(--radius) var(--radius) 0; margin: 22px 0; font-size: 15.5px;
}
.todo { border-left-color: var(--gold); background: #FDF9EF; }

/* ---------- 页脚 ---------- */
.footer { background: #0E1430; color: #C7CCDA; padding: 48px 0 28px; font-size: 14.5px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 12px; }
.footer ul { list-style: none; }
.footer li { margin-bottom: 7px; }
.footer a { color: #C7CCDA; }
.footer a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12); padding-top: 20px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; color: #8F97AD;
}
.beian a { color: #8F97AD; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .g3, .g4, .stats, .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 29px; }
  .section h2 { font-size: 23px; }
  .nav-links {
    display: none; position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    flex-direction: column; gap: 0; padding: 8px 24px 16px;
  }
  .nav-links.open { display: flex; }
  .nav-links li { padding: 10px 0; border-bottom: 1px solid var(--line); }
  .nav-toggle { display: block; }
}
@media (max-width: 600px) {
  .g2, .g3, .g4, .stats, .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 52px 0 44px; }
  .hero h1 { font-size: 25px; }
  .section { padding: 44px 0; }
}

/* ============================================================
   图片位样式（insert_images.py 插入的 figure 元素）
   图片缺失时：img 被 onerror 隐藏，露出品牌色渐变底，不会显示破图
   ============================================================ */
figure { margin: 0; }

.hero-media,
.card-media,
.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--klein) 0%, var(--klein-dark) 100%);
}
.hero-media img,
.card-media img,
.gallery-item img {
  display: block; width: 100%; height: 100%;
  object-fit: cover;
}
.hero-media { aspect-ratio: 16 / 7; margin: 26px 0 0; }
.card-media { aspect-ratio: 4 / 3; margin-bottom: 14px; }
.gallery-item { aspect-ratio: 4 / 3; }

/* 缺图时显示弱提示，上线后图到位自动消失 */
figure.empty::after {
  content: "图片待补充";
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.42);
  font-size: 13px; letter-spacing: .05em;
}

.gallery {
  display: grid; gap: 18px; margin-top: 22px;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}
.gallery-item figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 22px 14px 12px;
  background: linear-gradient(to top, rgba(0,15,60,.82), rgba(0,15,60,0));
  color: #fff; font-size: 13px; line-height: 1.5;
}
.gallery.g2 { grid-template-columns: repeat(2, 1fr); margin-top: 20px; }

@media (max-width: 600px) {
  .hero-media { aspect-ratio: 16 / 10; }
  .gallery.g2 { grid-template-columns: 1fr; }
}