/* 保利地暖（伊川店）官网 - 全站样式表
   纯静态、无外部依赖、移动端自适应 */

:root {
  --brand: #c8501e;
  --brand-dark: #a63f13;
  --brand-light: #fdf3ec;
  --ink: #23262b;
  --ink-2: #5b6169;
  --line: #e6e3df;
  --bg: #ffffff;
  --bg-soft: #faf7f4;
  --radius: 10px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg);
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 18px;
}

/* ---------- 顶栏 ---------- */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 0;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-weight: 700;
  color: var(--ink);
}
.logo:hover { text-decoration: none; }
.logo strong { font-size: 20px; letter-spacing: .5px; color: var(--brand); }
.logo span { font-size: 13px; color: var(--ink-2); }

.nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav a {
  display: block;
  padding: 6px 2px;
  color: var(--ink);
  font-size: 15px;
  border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--brand); text-decoration: none; }
.nav a[aria-current="page"] { color: var(--brand); border-bottom-color: var(--brand); font-weight: 700; }

/* ---------- 通用区块 ---------- */
main { display: block; }

.section { padding: 46px 0; }
.section--soft { background: var(--bg-soft); }
.section + .section { border-top: 1px solid var(--line); }

h1 {
  font-size: 28px;
  line-height: 1.4;
  margin: 0 0 14px;
}
h2 {
  font-size: 22px;
  margin: 0 0 18px;
  padding-left: 12px;
  border-left: 4px solid var(--brand);
}
h3 { font-size: 18px; margin: 0 0 8px; }

p { margin: 0 0 14px; }

.lead { font-size: 17px; color: var(--ink-2); }

.page-head {
  background: var(--brand-light);
  padding: 34px 0 30px;
  border-bottom: 1px solid var(--line);
}
.page-head h1 { margin-bottom: 8px; }
.page-head p { margin: 0; color: var(--ink-2); }

/* ---------- 首屏 ---------- */
.hero {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  align-items: center;
  padding: 40px 0;
}
.hero-text { flex: 1 1 320px; }
.hero-media { flex: 1 1 280px; }
.hero-media img {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  width: 100%;
  max-width: 340px;
  margin: 0 auto;
}
.hero h1 { font-size: 30px; }
.tagline {
  font-size: 15px;
  color: var(--brand);
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }
.btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: 999px;
  background: var(--brand);
  color: #fff;
  font-size: 15px;
  border: 1px solid var(--brand);
}
.btn:hover { background: var(--brand-dark); text-decoration: none; }
.btn--ghost { background: #fff; color: var(--brand); }
.btn--ghost:hover { background: var(--brand-light); }

/* ---------- 卡片网格 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 18px;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}
.card p:last-child { margin-bottom: 0; }
.card ul { margin: 8px 0 0; padding-left: 20px; }
.card li { margin-bottom: 4px; }

.card--media { padding: 0; overflow: hidden; }
.card--media img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; }
.card--media .card-body { padding: 14px 16px; }
.card--media h3 { font-size: 16px; margin-bottom: 4px; }
.card--media p { font-size: 13px; color: var(--ink-2); margin: 0; }

/* ---------- 数据 ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  margin: 0 0 8px;
  padding: 0;
  list-style: none;
}
.stats li {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}
.stats b { display: block; font-size: 26px; color: var(--brand); line-height: 1.3; }
.stats span { font-size: 13px; color: var(--ink-2); }

.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  font-size: 15px;
}
caption {
  caption-side: top;
  text-align: left;
  font-size: 13px;
  color: var(--ink-2);
  padding-bottom: 8px;
}
th, td {
  border: 1px solid var(--line);
  padding: 9px 12px;
  text-align: left;
}
th { background: var(--bg-soft); font-weight: 700; }
tbody tr:nth-child(even) td { background: #fcfbfa; }

.bar { display: inline-block; height: 10px; background: var(--brand); border-radius: 3px; vertical-align: middle; }

/* ---------- 信息列表 ---------- */
.info-list { margin: 0; padding: 0; list-style: none; }
.info-list li {
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.info-list li:last-child { border-bottom: 0; }
.info-list dt, .info-list .k {
  flex: 0 0 96px;
  color: var(--ink-2);
  font-size: 14px;
}
.info-list .v { flex: 1 1 220px; }

.notice {
  background: var(--brand-light);
  border: 1px solid #f0d9c9;
  border-radius: var(--radius);
  padding: 14px 16px;
  font-size: 14px;
  color: #7a4322;
}

.photos { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.photos figure { margin: 0; }
.photos img { border-radius: var(--radius); border: 1px solid var(--line); width: 100%; }
.photos figcaption { font-size: 13px; color: var(--ink-2); margin-top: 6px; }

/* ---------- 常见问答 ---------- */
.faq { margin: 0; }
.faq details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 12px;
}
.faq summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "问："; color: var(--brand); }
.faq details[open] summary { color: var(--brand); margin-bottom: 8px; }
.faq .answer { color: var(--ink-2); font-size: 15px; }
.faq .answer::before { content: "答："; color: var(--brand); font-weight: 700; }
.faq .answer p:last-child { margin-bottom: 0; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: #2b2e33;
  color: #cfd3d8;
  padding: 30px 0 26px;
  margin-top: 10px;
  font-size: 14px;
}
.site-footer a { color: #f0c9b4; }
.footer-company {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}
.footer-credit {
  font-size: 13px;
  font-weight: 400;
  color: #9aa1a9;
  margin-left: 10px;
}
.footer-info { margin: 0 0 12px; }
.footer-info span { display: inline-block; margin-right: 16px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 0 0 14px; padding: 0; list-style: none; }
.copyright {
  border-top: 1px solid #3d4147;
  padding-top: 12px;
  font-size: 13px;
  color: #9aa1a9;
}

/* ---------- 移动端 ---------- */
@media (max-width: 640px) {
  body { font-size: 15px; }
  .header-inner { padding: 10px 0; }
  .nav ul { gap: 4px 14px; }
  .nav a { font-size: 14px; padding: 4px 1px; }
  h1 { font-size: 23px; }
  .hero { padding: 26px 0; gap: 20px; }
  .hero h1 { font-size: 24px; }
  .section { padding: 32px 0; }
  .stats b { font-size: 22px; }
  .info-list dt, .info-list .k { flex-basis: 100%; }
}