/* 广州泰生信息技术有限公司 官网样式
   纯静态，无外部依赖。 */

:root {
  --ink: #0d1b2a;
  --ink-2: #33475e;
  --muted: #6b7c93;
  --brand: #1b4bd8;
  --brand-d: #12359e;
  --brand-l: #eaf0ff;
  --teal: #0f8f8f;
  --bg: #ffffff;
  --bg-soft: #f5f8fd;
  --line: #e2e9f4;
  --line-2: #d3ddec;
  --radius: 14px;
  --max: 1120px;
  --shadow: 0 1px 2px rgba(13, 27, 42, .04), 0 8px 24px rgba(13, 27, 42, .06);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  color: var(--ink);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.94);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-in {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  height: 66px; display: flex; align-items: center; gap: 28px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ink); font-size: 17px; letter-spacing: .2px; }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 9px; flex: none;
  background: linear-gradient(135deg, var(--brand) 0%, #2f6bff 55%, var(--teal) 130%);
  color: #fff; font-size: 15px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.brand small { display: block; font-weight: 400; font-size: 12px; color: var(--muted); line-height: 1.2; letter-spacing: 0; }
.nav-links { display: flex; gap: 4px; margin-left: auto; }
.nav-links a {
  color: var(--ink-2); font-size: 15px; padding: 8px 14px; border-radius: 9px; white-space: nowrap;
}
.nav-links a:hover { background: var(--bg-soft); text-decoration: none; color: var(--brand); }
.nav-links a.on { color: var(--brand); font-weight: 600; }
.nav-tel {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--brand); color: #fff; font-weight: 600; font-size: 15px;
  padding: 9px 18px; border-radius: 999px; white-space: nowrap;
}
.nav-tel:hover { background: var(--brand-d); text-decoration: none; color: #fff; }
.nav-burger { display: none; }

/* ---------- 通用区块 ---------- */
section { padding: 72px 0; }
section.tight { padding: 52px 0; }
.soft { background: var(--bg-soft); }
.hair { border-top: 1px solid var(--line); }

.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .08em;
  color: var(--brand); background: var(--brand-l);
  padding: 5px 12px; border-radius: 999px; margin-bottom: 16px;
}
h1 { font-size: 40px; line-height: 1.32; letter-spacing: -.5px; margin: 0 0 18px; font-weight: 700; }
h2 { font-size: 28px; line-height: 1.4; margin: 0 0 14px; font-weight: 700; letter-spacing: -.3px; }
h3 { font-size: 19px; line-height: 1.5; margin: 0 0 10px; font-weight: 600; }
h4 { font-size: 16px; margin: 0 0 8px; font-weight: 600; }
p { margin: 0 0 16px; color: var(--ink-2); }
.lead { font-size: 18px; color: var(--ink-2); max-width: 720px; }
.sub { color: var(--muted); font-size: 15px; }
.center { text-align: center; }
.center .lead { margin-left: auto; margin-right: auto; }

/* ---------- 按钮 ---------- */
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px; border-radius: 10px; font-weight: 600; font-size: 16px;
  border: 1px solid transparent; cursor: pointer;
}
.btn:hover { text-decoration: none; }
.btn-p { background: var(--brand); color: #fff; }
.btn-p:hover { background: var(--brand-d); color: #fff; }
.btn-s { background: #fff; color: var(--brand); border-color: var(--line-2); }
.btn-s:hover { border-color: var(--brand); background: var(--brand-l); }

/* ---------- 首屏 ---------- */
.hero {
  padding: 76px 0 64px;
  background:
    radial-gradient(760px 380px at 88% -8%, rgba(27,75,216,.10), transparent 62%),
    radial-gradient(620px 340px at 4% 106%, rgba(15,143,143,.09), transparent 60%),
    linear-gradient(180deg, #f8fbff 0%, #eef4ff 100%);
  border-bottom: 1px solid var(--line);
}
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 26px 0 0; padding: 0; list-style: none; }
.chips li {
  font-size: 14px; color: var(--ink-2); background: #fff;
  border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px;
}
.hero-facts { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.hero-facts li {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; box-shadow: var(--shadow);
}
.hero-facts b { display: block; font-size: 22px; color: var(--brand); letter-spacing: -.3px; }
.hero-facts span { font-size: 14px; color: var(--muted); }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 20px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; box-shadow: var(--shadow);
  display: flex; flex-direction: column;
}
.card h3 { margin-bottom: 8px; }
.card p { font-size: 15px; margin-bottom: 14px; }
.card .more { margin-top: auto; font-size: 15px; font-weight: 600; }
.card-ico {
  width: 42px; height: 42px; border-radius: 11px; margin-bottom: 16px; flex: none;
  background: var(--brand-l); color: var(--brand);
  display: flex; align-items: center; justify-content: center;
}
.card-ico svg { width: 22px; height: 22px; }

/* ---------- 列表 ---------- */
ul.ticks { list-style: none; margin: 0 0 4px; padding: 0; }
ul.ticks li { position: relative; padding-left: 26px; margin-bottom: 9px; color: var(--ink-2); font-size: 15px; }
ul.ticks li::before {
  content: ""; position: absolute; left: 4px; top: 11px;
  width: 7px; height: 7px; border-radius: 2px; background: var(--brand);
}
ul.ticks.green li::before { background: var(--teal); }

/* ---------- 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: s; }
.step { position: relative; padding-top: 8px; }
.step .n {
  width: 34px; height: 34px; border-radius: 10px; background: var(--brand); color: #fff;
  font-weight: 700; font-size: 15px; display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.step h4 { margin-bottom: 6px; }
.step p { font-size: 15px; margin: 0; }

/* ---------- 表格 ---------- */
.tbl-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 560px; }
th, td { padding: 13px 18px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--bg-soft); font-weight: 600; color: var(--ink); white-space: nowrap; }
tbody tr:last-child td { border-bottom: none; }
td { color: var(--ink-2); }

/* ---------- FAQ ---------- */
.faq { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden; }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:last-child { border-bottom: none; }
.faq summary {
  cursor: pointer; padding: 18px 22px; font-weight: 600; font-size: 16px;
  list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; color: var(--brand); font-size: 20px; font-weight: 400; flex: none;
}
.faq details[open] summary::after { content: "–"; }
.faq .a { padding: 0 22px 20px; color: var(--ink-2); font-size: 15px; }
.faq .a p:last-child { margin-bottom: 0; }

/* ---------- CTA 条 ---------- */
.cta {
  background: linear-gradient(120deg, #10306e 0%, var(--brand) 70%, #2a63f0 100%);
  color: #fff; border-radius: 18px; padding: 44px 44px;
  display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.cta h2 { color: #fff; margin-bottom: 8px; }
.cta p { color: rgba(255,255,255,.82); margin: 0; }
.cta .btn { background: #fff; color: var(--brand-d); }
.cta .btn:hover { background: #eef3ff; color: var(--brand-d); }

/* ---------- 正文排版（业务页） ---------- */
.prose { max-width: 800px; }
.prose h2 { margin-top: 44px; padding-top: 8px; }
.prose h2:first-child { margin-top: 0; }
.prose ul.ticks li { margin-bottom: 11px; }
.note {
  background: var(--bg-soft); border-left: 3px solid var(--brand);
  border-radius: 0 10px 10px 0; padding: 16px 20px; font-size: 15px; color: var(--ink-2);
  margin: 22px 0;
}
.note p:last-child { margin-bottom: 0; }

/* ---------- 页脚 ---------- */
footer { background: #0d1b2a; color: #9fb0c6; padding: 52px 0 30px; font-size: 14px; }
footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 36px; }
footer h5 { color: #fff; font-size: 15px; margin: 0 0 14px; font-weight: 600; }
footer a { color: #9fb0c6; }
footer a:hover { color: #fff; }
footer ul { list-style: none; margin: 0; padding: 0; }
footer li { margin-bottom: 9px; }
footer .co { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 10px; }
footer .legal {
  margin-top: 38px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.10);
  display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between;
  font-size: 13px; color: #8296ad;
}
footer .legal a { color: #8296ad; text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .g4 { grid-template-columns: repeat(2, 1fr); }
  .g3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  footer .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-tel { margin-left: auto; padding: 8px 14px; font-size: 14px; }
  h1 { font-size: 28px; }
  h2 { font-size: 22px; }
  .lead { font-size: 16px; }
  section { padding: 48px 0; }
  .hero { padding: 44px 0 40px; }
  .g2, .g3, .g4, .steps { grid-template-columns: 1fr; }
  .cta { padding: 30px 24px; border-radius: 14px; }
  footer .cols { grid-template-columns: 1fr; gap: 26px; }
  .wrap { padding: 0 18px; }
}