/* ===== 卡卡速联流量卡 · 落地页样式 ===== */
:root {
  --blue: #0b6bff;
  --blue-deep: #0648b8;
  --cyan: #12c2e9;
  --orange: #ff7a1a;
  --orange-deep: #f05a00;
  --ink: #0f1e33;
  --ink-2: #4a5b73;
  --line: #e6ecf5;
  --bg: #f5f8fd;
  --white: #fff;
  --ok: #16a34a;
  --grad-main: linear-gradient(135deg, #0b3a91 0%, #0b6bff 55%, #12c2e9 100%);
  --shadow: 0 10px 30px rgba(11, 55, 130, .10);
  --radius: 16px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 18px; }

/* ===== 顶部导航 ===== */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar .container { display: flex; align-items: center; gap: 12px; padding-top: 10px; padding-bottom: 10px; }
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand .logo {
  width: 40px; height: 40px; border-radius: 10px; overflow: hidden; flex: none;
  box-shadow: 0 4px 10px rgba(11,107,255,.25);
}
.brand .logo img { width: 100%; height: 100%; object-fit: cover; }
.brand .bt { line-height: 1.2; min-width: 0; }
.brand .bt b { font-size: 16px; display: block; white-space: nowrap; }
.brand .bt span { font-size: 12px; color: var(--ink-2); white-space: nowrap; }
.topbar .nav { margin-left: auto; display: flex; gap: 10px; }
.topbar .nav a {
  font-size: 14px; padding: 8px 14px; border-radius: 999px; font-weight: 600;
  transition: .2s; white-space: nowrap;
}
.topbar .nav .btn-buy { background: var(--orange); color: #fff; box-shadow: 0 6px 16px rgba(255,122,26,.35); }
.topbar .nav .btn-buy:hover { background: var(--orange-deep); }
.topbar .nav .btn-agent { background: var(--blue); color: #fff; box-shadow: 0 6px 16px rgba(11,107,255,.30); }
.topbar .nav .btn-agent:hover { background: var(--blue-deep); }
.topbar .nav .btn-news { background: #fff; color: var(--blue); border: 1.5px solid var(--blue); }
.topbar .nav .btn-news:hover { background: #eef4ff; }

/* ===== 首屏 Hero ===== */
.hero {
  background: var(--grad-main); color: #fff; position: relative; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(600px 300px at 85% 10%, rgba(255,255,255,.16), transparent 60%),
    radial-gradient(500px 300px at 5% 90%, rgba(18,194,233,.25), transparent 60%);
  pointer-events: none;
}
.hero .container { position: relative; padding-top: 64px; padding-bottom: 72px; }
.hero .tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.28);
  padding: 6px 14px; border-radius: 999px; font-size: 13px; margin-bottom: 18px;
}
.hero h1 { font-size: clamp(30px, 5vw, 52px); line-height: 1.18; font-weight: 800; letter-spacing: .5px; }
.hero h1 .hl { color: #ffd25a; }
.hero .sub { margin: 18px 0 26px; font-size: clamp(15px, 2.4vw, 18px); color: rgba(255,255,255,.92); max-width: 560px; }
.hero .cta { display: flex; flex-wrap: wrap; gap: 14px; }
.hero .btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 16px; font-weight: 700; padding: 15px 30px; border-radius: 999px; transition: .2s;
}
.hero .btn-buy { background: var(--orange); color: #fff; box-shadow: 0 10px 24px rgba(255,122,26,.45); }
.hero .btn-buy:hover { transform: translateY(-2px); background: var(--orange-deep); }
.hero .btn-agent { background: rgba(255,255,255,.14); color: #fff; border: 1px solid rgba(255,255,255,.45); }
.hero .btn-agent:hover { background: rgba(255,255,255,.24); }
.hero .qrcodes { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 34px; }
.hero .qr-item {
  display: flex; align-items: center; gap: 12px; background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.22); border-radius: 14px; padding: 12px 16px;
}
.hero .qr-item img { width: 74px; height: 74px; border-radius: 8px; background: #fff; padding: 4px; }
.hero .qr-item .qt { font-size: 13px; }
.hero .qr-item .qt b { display: block; font-size: 15px; }

/* ===== 信任条 ===== */
.trust { background: #fff; border-bottom: 1px solid var(--line); }
.trust .container { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; padding-top: 18px; padding-bottom: 18px; }
.trust .ti { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--ink-2); }
.trust .ti .ic {
  width: 34px; height: 34px; border-radius: 10px; flex: none;
  display: flex; align-items: center; justify-content: center; font-size: 18px;
  background: linear-gradient(135deg, rgba(11,107,255,.12), rgba(18,194,233,.12)); color: var(--blue);
}
.trust .ti b { color: var(--ink); font-weight: 600; display: block; }

/* ===== 通用区块 ===== */
.section { padding: 56px 0; }
.section-head { text-align: center; margin-bottom: 34px; }
.section-head .kicker { color: var(--blue); font-weight: 700; font-size: 13px; letter-spacing: 2px; }
.section-head h2 { font-size: clamp(24px, 3.6vw, 34px); font-weight: 800; margin: 8px 0 10px; }
.section-head p { color: var(--ink-2); font-size: 15px; max-width: 640px; margin: 0 auto; }

/* ===== 爆款套餐 ===== */
.hot-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); display: flex; flex-direction: column; transition: .25s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(11,55,130,.16); }
.card .top {
  background: var(--grad-main); color: #fff; padding: 18px 18px 14px; position: relative;
}
.card .top .op {
  display: inline-block; font-size: 11px; background: rgba(255,255,255,.22); border-radius: 999px; padding: 2px 10px; margin-bottom: 10px;
}
.card .top h3 { font-size: 18px; font-weight: 700; }
.card .top .area-tag { position: absolute; top: 14px; right: 14px; font-size: 11px; background: var(--orange); color: #fff; padding: 3px 10px; border-radius: 999px; }
.card .fee { display: flex; align-items: baseline; gap: 8px; margin: 6px 0 2px; }
.card .fee .price { font-size: 34px; font-weight: 800; color: #ffd25a; }
.card .fee .price small { font-size: 15px; font-weight: 600; }
.card .fee .orig { color: rgba(255,255,255,.65); text-decoration: line-through; font-size: 13px; }
.card .body { padding: 14px 18px 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card .metrics { display: flex; gap: 12px; }
.card .m { flex: 1; text-align: center; background: var(--bg); border-radius: 10px; padding: 8px 4px; }
.card .m b { display: block; font-size: 18px; color: var(--blue); font-weight: 800; }
.card .m span { font-size: 12px; color: var(--ink-2); }
.card .charge { font-size: 12.5px; color: var(--ink-2); background: #fff7ec; border: 1px dashed #ffc896; border-radius: 8px; padding: 6px 10px; }
.card .charge b { color: var(--orange-deep); font-weight: 600; }
.card .go {
  margin-top: auto; text-align: center; background: var(--orange); color: #fff; font-weight: 700;
  padding: 12px; border-radius: 10px; transition: .2s; font-size: 15px;
}
.card .go:hover { background: var(--orange-deep); }

/* ===== 全部套餐表格 ===== */
.tabs { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 22px; }
.tabs button {
  border: 1px solid var(--line); background: #fff; color: var(--ink-2); font-size: 14px; font-weight: 600;
  padding: 9px 20px; border-radius: 999px; cursor: pointer; transition: .2s;
}
.tabs button.active { background: var(--blue); border-color: var(--blue); color: #fff; box-shadow: 0 8px 18px rgba(11,107,255,.28); }
.table-wrap { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
table { width: 100%; border-collapse: collapse; }
thead th {
  background: #f0f5ff; color: var(--ink-2); font-size: 13px; font-weight: 700; text-align: left;
  padding: 13px 14px; white-space: nowrap;
}
tbody td { padding: 13px 14px; border-top: 1px solid var(--line); font-size: 14px; vertical-align: middle; }
tbody tr:hover { background: #f8fbff; }
.cell-name { font-weight: 700; }
.cell-name .tag { display: inline-block; margin-left: 8px; font-size: 11px; padding: 1px 8px; border-radius: 999px; }
.tag-全国 { background: #e6f4ec; color: var(--ok); }
.tag-只发 { background: #fff1e6; color: var(--orange-deep); }
.cell-price { color: var(--blue); font-weight: 800; font-size: 16px; }
.cell-price .orig { color: #b3bfd1; font-weight: 400; font-size: 12px; text-decoration: line-through; margin-left: 6px; }
.cell-op { color: var(--ink-2); }
.cell-area { color: var(--ink-2); }
.cell-age { color: var(--ink-2); }
.cell-go { text-align: center; }
.cell-go a {
  display: inline-block; background: var(--orange); color: #fff; font-size: 13px; font-weight: 700;
  padding: 6px 16px; border-radius: 999px; transition: .2s; white-space: nowrap;
}
.cell-go a:hover { background: var(--orange-deep); }
.empty-row td { text-align: center; color: var(--ink-2); padding: 30px; }

/* ===== 更多业务 ===== */
.biz-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.biz-card { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.biz-card img { width: 100%; height: 150px; object-fit: cover; }
.biz-card .ov { position: absolute; inset: auto 0 0 0; padding: 22px 16px 14px; background: linear-gradient(transparent, rgba(7,20,40,.82)); color: #fff; }
.biz-card .ov h3 { font-size: 17px; font-weight: 700; }
.biz-card .ov p { font-size: 12.5px; color: rgba(255,255,255,.85); }

/* ===== 领卡流程 ===== */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 18px; counter-reset: step; }
.step { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 18px; text-align: center; box-shadow: var(--shadow); }
.step .num {
  width: 46px; height: 46px; margin: 0 auto 12px; border-radius: 50%;
  background: var(--grad-main); color: #fff; font-size: 20px; font-weight: 800;
  display: flex; align-items: center; justify-content: center; box-shadow: 0 8px 18px rgba(11,107,255,.3);
}
.step h3 { font-size: 16px; margin-bottom: 6px; }
.step p { font-size: 13.5px; color: var(--ink-2); }

/* ===== 代理加盟 ===== */
.agent { background: linear-gradient(135deg, #101f3a 0%, #0b3a91 60%, #0b6bff 100%); color: #fff; }
.agent .container { display: grid; grid-template-columns: 1.3fr 1fr; gap: 36px; align-items: center; }
.agent .kicker { color: #ffd25a; font-weight: 700; font-size: 13px; letter-spacing: 2px; }
.agent h2 { font-size: clamp(24px, 3.6vw, 34px); font-weight: 800; margin: 8px 0 14px; }
.agent .desc { color: rgba(255,255,255,.88); font-size: 15px; max-width: 520px; }
.agent .benefits { list-style: none; margin: 20px 0 26px; display: grid; gap: 10px; }
.agent .benefits li { display: flex; gap: 10px; align-items: flex-start; font-size: 14.5px; }
.agent .benefits .ck { flex: none; width: 22px; height: 22px; border-radius: 50%; background: rgba(255,255,255,.16); color: #ffd25a; display: flex; align-items: center; justify-content: center; font-size: 13px; }
.agent .btn-agent2 { background: var(--orange); color: #fff; font-size: 16px; font-weight: 700; padding: 14px 34px; border-radius: 999px; box-shadow: 0 10px 24px rgba(255,122,26,.45); display: inline-flex; gap: 8px; }
.agent .btn-agent2:hover { background: var(--orange-deep); }
.agent .qr-box { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.22); border-radius: 18px; padding: 22px; text-align: center; }
.agent .qr-box img { width: 150px; height: 150px; margin: 0 auto 12px; border-radius: 12px; background: #fff; padding: 6px; }
.agent .qr-box b { font-size: 16px; display: block; margin-bottom: 4px; }
.agent .qr-box span { font-size: 13px; color: rgba(255,255,255,.82); }

/* ===== FAQ ===== */
.faq { max-width: 780px; margin: 0 auto; display: grid; gap: 12px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 0 18px; box-shadow: 0 4px 12px rgba(11,55,130,.05); }
.faq summary { cursor: pointer; font-weight: 600; padding: 16px 0; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.faq summary::after { content: "+"; font-size: 20px; color: var(--blue); transition: .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .a { color: var(--ink-2); font-size: 14px; padding: 0 0 16px; }

/* ===== 底部 ===== */
footer { background: #0c1730; color: rgba(255,255,255,.72); padding: 40px 0 28px; font-size: 13px; }
footer .container { display: grid; gap: 18px; }
footer .brand-row { display: flex; align-items: center; gap: 12px; }
footer .brand-row img { width: 40px; height: 40px; border-radius: 10px; }
footer .brand-row b { color: #fff; font-size: 16px; }
footer .disclaimer {
  border: 1px solid rgba(255,255,255,.14); border-radius: 10px; padding: 12px 14px;
  color: rgba(255,255,255,.6); font-size: 12px; line-height: 1.8;
}
footer .copy { text-align: center; color: rgba(255,255,255,.5); }

/* ===== 响应式 ===== */
@media (max-width: 820px) {
  .agent .container { grid-template-columns: 1fr; }
  .topbar .nav a { padding: 7px 12px; font-size: 13px; }
}
@media (max-width: 640px) {
  .hero .container { padding-top: 44px; padding-bottom: 52px; }
  .section { padding: 42px 0; }
  .table-wrap { overflow-x: auto; }
  table { min-width: 640px; }
  .topbar .brand .bt span { display: none; }
}