/* 福建云推助手官网 · 腾讯蓝商务风 */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "PingFang SC", "Microsoft YaHei", sans-serif; color: #1a1a1a; background: #fff; line-height: 1.75; }
a { color: #0052D9; text-decoration: none; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
header { border-bottom: 1px solid #e5e5e5; background: #fff; position: sticky; top: 0; z-index: 10; }
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-size: 18px; font-weight: 700; color: #0052D9; }
.brand small { display: block; font-size: 11px; color: #666; font-weight: 400; }
nav a { margin-left: 22px; font-size: 15px; color: #333; }
nav a:hover, nav a.active { color: #0052D9; font-weight: 600; }
.hero { background: linear-gradient(135deg, #0052D9 0%, #2b7bff 100%); color: #fff; padding: 72px 0 64px; }
.hero h1 { font-size: 34px; margin-bottom: 14px; line-height: 1.35; }
.hero p { font-size: 17px; opacity: .92; max-width: 760px; }
.badges { margin-top: 26px; display: flex; gap: 12px; flex-wrap: wrap; }
.badge { background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.35); border-radius: 20px; padding: 6px 16px; font-size: 13px; }
section { padding: 52px 0; }
h2 { font-size: 24px; color: #0052D9; margin-bottom: 20px; }
h3 { font-size: 17px; margin: 18px 0 8px; }
p.lead { font-size: 16px; color: #444; max-width: 820px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.card { background: #F5F8FF; border: 1px solid #E3F2FD; border-radius: 10px; padding: 22px; }
.card h3 { color: #0052D9; margin-top: 0; }
.card p { font-size: 14px; color: #555; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }
.stat { text-align: center; padding: 24px 12px; background: #F5F8FF; border-radius: 10px; }
.stat b { display: block; font-size: 30px; color: #0052D9; }
.stat span { font-size: 13px; color: #666; }
table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 14px 0; }
th, td { border: 1px solid #dfe6f2; padding: 10px 12px; text-align: left; vertical-align: top; }
th { background: #E3F2FD; color: #003ba0; }
.faq { max-width: 860px; }
.faq-item { border-bottom: 1px solid #ececec; padding: 14px 0; }
.faq-item b { color: #0052D9; display: block; margin-bottom: 6px; }
.cta { background: #0052D9; color: #fff; text-align: center; padding: 44px 24px; border-radius: 12px; }
.cta a.btn { display: inline-block; background: #fff; color: #0052D9; font-weight: 700; padding: 12px 34px; border-radius: 24px; margin-top: 14px; }
ul.tick { list-style: none; }
ul.tick li { padding-left: 26px; position: relative; margin: 8px 0; }
ul.tick li::before { content: "✓"; position: absolute; left: 0; color: #0052D9; font-weight: 700; }
footer { border-top: 1px solid #e5e5e5; padding: 30px 0 40px; font-size: 13px; color: #777; }
.updated { font-size: 12px; color: #999; margin-top: 10px; }
.note { font-size: 12px; color: #b36b00; background: #fff8ec; border: 1px solid #ffe3b0; border-radius: 6px; padding: 8px 12px; margin-top: 14px; }

.isp { margin-top: 12px; }
.isp img { vertical-align: middle; }

/* ==========================================================
   移动端导航开关（纯 CSS，无 JS）
   桌面端隐藏；≤768px 显示汉堡按钮
   ========================================================== */
.navsw { display: none; }
.navtoggle { display: none; }

/* ==========================================================
   平板 / 小屏笔记本
   ========================================================== */
@media (max-width: 900px) {
  .wrap { padding: 0 18px; }
  nav a { margin-left: 15px; font-size: 14px; }
  .hero h1 { font-size: 30px; }
}

/* ==========================================================
   手机端（≤768px）
   ========================================================== */
@media (max-width: 768px) {
  .wrap { padding: 0 16px; }

  /* 顶部导航：品牌 + 汉堡按钮，菜单展开为整宽下拉 */
  .nav { height: 56px; flex-wrap: wrap; align-items: center; }
  .brand { font-size: 16px; line-height: 1.3; flex: 1 1 auto; min-width: 0; }
  .brand small { display: none; }
  .navtoggle {
    display: flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; flex: 0 0 40px;
    margin-right: -8px; font-size: 21px; line-height: 1;
    color: #0052D9; background: transparent; border: 0;
    border-radius: 8px; cursor: pointer; user-select: none;
    -webkit-tap-highlight-color: transparent;
  }
  .navtoggle:active { background: #F0F5FF; }
  nav {
    display: none;
    flex: 0 0 100%;
    flex-direction: column;
    align-items: stretch;
    margin: 2px 0 6px;
    border-top: 1px solid #eee;
    background: #fff;
  }
  nav a {
    margin: 0; padding: 12px 2px;
    font-size: 15px; color: #222;
    border-bottom: 1px solid #f4f4f4;
  }
  nav a:last-child { border-bottom: 0; }
  nav a.active { color: #0052D9; font-weight: 600; }
  .navsw:checked ~ nav { display: flex; }
  .navsw:checked ~ .navtoggle { background: #E3F2FD; color: #0052D9; }

  /* Hero */
  .hero { padding: 38px 0 32px; }
  .hero h1 { font-size: 23px; line-height: 1.45; margin-bottom: 10px; }
  .hero p { font-size: 15px; }
  .badges { margin-top: 16px; gap: 8px; }
  .badge { font-size: 12px; padding: 5px 12px; line-height: 1.5; }

  /* 版面节奏 */
  section { padding: 32px 0; }
  h2 { font-size: 20px; margin-bottom: 14px; line-height: 1.4; }
  h3 { font-size: 16px; margin: 14px 0 6px; }
  p.lead { font-size: 15px; }

  /* 卡片 / 数据：单列或双列 */
  .grid { grid-template-columns: 1fr; gap: 12px; }
  .card { padding: 16px 15px; border-radius: 8px; }
  .card p { font-size: 14px; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat { padding: 15px 8px; }
  .stat b { font-size: 22px; }
  .stat span { font-size: 12px; line-height: 1.5; }

  /* FAQ */
  .faq-item { padding: 12px 0; }
  .faq-item b { font-size: 15px; }
  .faq-item p { font-size: 14px; }

  /* CTA */
  .cta { padding: 28px 18px; border-radius: 10px; }
  .cta h2 { font-size: 19px; }
  .cta p { font-size: 14px; }
  .cta a.btn { padding: 11px 26px; font-size: 15px; margin-top: 12px; }

  /* 列表 */
  ul.tick li { font-size: 14px; margin: 9px 0; }

  /* 图片自适应 */
  img { max-width: 100%; height: auto; }
  .isp img, footer img { height: auto; }
  [style*="border-radius:12px"] { max-width: 100%; height: auto; }

  /* 页脚 */
  footer { padding: 22px 0 32px; font-size: 12px; line-height: 1.9; }
  .note { font-size: 12px; line-height: 1.7; }

  /* 表格 → 卡片堆叠（带表头的多列表） */
  table.tbl-list,
  table.tbl-list tbody,
  table.tbl-list tr,
  table.tbl-list td { display: block; width: 100%; }
  table.tbl-list { border: 0; margin: 12px 0; }
  table.tbl-list tbody tr {
    border: 1px solid #dfe6f2;
    border-radius: 8px;
    margin-bottom: 10px;
    overflow: hidden;
  }
  table.tbl-list tbody tr:first-child { display: none; }
  table.tbl-list td {
    border: 0;
    border-top: 1px solid #eef2f9;
    padding: 9px 12px;
    font-size: 14px;
  }
  table.tbl-list td:first-child {
    border-top: 0;
    background: #E3F2FD;
    color: #003ba0;
    font-weight: 600;
  }

  /* 表格 → 卡片堆叠（左标题右内容的键值表） */
  table.tbl-kv,
  table.tbl-kv tbody,
  table.tbl-kv tr,
  table.tbl-kv th,
  table.tbl-kv td { display: block; width: 100%; }
  table.tbl-kv { border: 0; margin: 12px 0; }
  table.tbl-kv tbody tr {
    border: 1px solid #dfe6f2;
    border-radius: 8px;
    margin-bottom: 10px;
    overflow: hidden;
  }
  table.tbl-kv th {
    border: 0;
    padding: 7px 12px;
    font-size: 13px;
  }
  table.tbl-kv td {
    border: 0;
    border-top: 1px solid #eef2f9;
    padding: 9px 12px;
    font-size: 14px;
  }
}

/* ==========================================================
   小屏手机（≤400px）
   ========================================================== */
@media (max-width: 400px) {
  .wrap { padding: 0 14px; }
  .hero h1 { font-size: 21px; }
  .hero p { font-size: 14px; }
  .stats { grid-template-columns: 1fr; }
  .stat b { font-size: 20px; }
  .brand { font-size: 15px; }
  nav a { font-size: 14px; padding: 11px 2px; }
}

/* 大屏：确保桌面端不受影响 */
@media (min-width: 769px) {
  nav { display: flex !important; }
  .navtoggle { display: none !important; }
}