/* 某某某建筑集团 — 站点共用样式
   取值与首页设计稿一致：首页原有内联样式保持不变，本文件供内页与新增区块使用。 */

:root {
  --ink: #1C2024;
  --paper: #F4F2ED;
  --accent: #B4642A;
  --muted: #6A6456;
  --body: #4A4F55;
  --line: #DDD8CE;
  --sand: #C9C3B6;
  --slate: #8C9AA3;
  --shell: #E3DFD6;
  --serif: 'Noto Serif SC', serif;
  --sans: 'Noto Sans SC', 'Archivo', sans-serif;
  --latin: Archivo, sans-serif;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--accent); }

.wrap { max-width: 1440px; margin: 0 auto; background: var(--paper); overflow: hidden; }

/* ── 页头 ─────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 18px 40px;
  background: rgba(244, 242, 237, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; flex: none; white-space: nowrap; }
.brand-mark { display: block; width: 26px; height: 26px; background: var(--ink); position: relative; flex: none; }
.brand-mark span { position: absolute; right: 0; bottom: 0; width: 13px; height: 13px; background: var(--accent); display: block; }
.brand-zh { font-family: var(--serif); font-weight: 700; font-size: 19px; letter-spacing: 0.04em; }
.brand-en { font-family: var(--latin); font-size: 11px; letter-spacing: 0.22em; color: var(--muted); text-transform: uppercase; padding-top: 3px; }
.site-nav { display: flex; align-items: center; gap: 34px; font-size: 14px; letter-spacing: 0.04em; flex-wrap: wrap; }
.site-nav a[aria-current="page"] { border-bottom: 2px solid var(--accent); padding-bottom: 2px; }
.nav-cta { background: var(--ink); color: var(--paper); padding: 10px 22px; }
.nav-cta:hover { color: var(--paper); background: var(--accent); }

/* ── 区块标题 ──────────────────────────────────────────── */
.sec { padding: 96px 40px 0; }
.sec-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 32px;
  border-bottom: 1px solid var(--ink); padding-bottom: 20px;
}
.sec-head h2 { font-family: var(--serif); font-weight: 700; font-size: 40px; margin: 0; letter-spacing: 0.02em; }
.sec-head span { font-family: var(--latin); font-size: 12px; letter-spacing: 0.26em; text-transform: uppercase; color: var(--muted); }

/* ── 内页首屏 ──────────────────────────────────────────── */
.page-hero { padding: 72px 40px 0; }
.crumb { font-size: 13px; color: var(--muted); margin: 0 0 24px; }
.crumb a { color: var(--muted); }
.page-hero h1 { font-family: var(--serif); font-weight: 900; font-size: 52px; line-height: 1.2; margin: 0; letter-spacing: 0.01em; text-wrap: pretty; }
.page-hero .en { font-family: var(--latin); font-size: 12px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--accent); margin: 0 0 24px; }
.page-hero .lede { font-size: 17px; line-height: 2; color: var(--body); margin: 28px 0 0; max-width: 60ch; text-wrap: pretty; }

/* ── 卡片网格 ──────────────────────────────────────────── */
.grid { display: grid; gap: 1px; background: var(--line); margin-top: 1px; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.card { background: var(--paper); padding: 40px 28px 46px; }
.card h3 { font-family: var(--serif); font-size: 22px; font-weight: 700; margin: 0 0 6px; }
.card .en { font-family: var(--latin); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin: 0 0 18px; }
.card p { font-size: 15px; line-height: 1.95; color: var(--body); margin: 0 0 14px; }
.card ul { margin: 0; padding-left: 18px; font-size: 15px; line-height: 1.95; color: var(--body); }
.card li { margin-bottom: 6px; }
.swatch { width: 52px; height: 52px; margin-bottom: 28px; }

/* ── 常见问题 ──────────────────────────────────────────── */
.faq-list { display: grid; gap: 1px; background: var(--line); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-top: 1px; }
.faq-item { background: var(--paper); padding: 30px 28px 32px; }
.faq-item h3 {
  font-family: var(--serif); font-size: 19px; font-weight: 700; line-height: 1.6;
  margin: 0 0 12px; display: flex; gap: 12px; align-items: baseline; text-wrap: pretty;
}
.faq-item h3::before { content: "Q"; font-family: var(--latin); font-size: 13px; color: var(--accent); letter-spacing: 0.1em; flex: none; }
.faq-item p { font-size: 15px; line-height: 2; color: var(--body); margin: 0; padding-left: 24px; text-wrap: pretty; }
.faq-item p + p { margin-top: 10px; }

/* ── 页脚 ─────────────────────────────────────────────── */
.site-footer { margin: 112px 0 0; background: var(--ink); color: var(--paper); padding: 72px 40px 40px; }
.site-footer a { color: var(--shell); }
.site-footer a:hover { color: var(--accent); }
.foot-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 40px 32px; }
.foot-label { font-family: var(--latin); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: #9A9382; margin-bottom: 14px; }
.foot-links { list-style: none; margin: 0; padding: 0; font-size: 15px; line-height: 2.1; }
.foot-body { font-size: 15px; line-height: 1.9; color: var(--shell); }
.foot-bar {
  display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  border-top: 1px solid #3A3F45; margin-top: 56px; padding-top: 24px;
  font-size: 13px; color: #9A9382;
}

/* ── 行动区 ───────────────────────────────────────────── */
.cta-band { padding: 88px 40px 0; }
.cta-inner { border: 1px solid var(--ink); padding: 44px 36px; display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-inner h2 { font-family: var(--serif); font-size: 30px; font-weight: 700; margin: 0 0 10px; }
.cta-inner p { font-size: 15px; line-height: 1.9; color: var(--body); margin: 0; max-width: 52ch; }
.btn { background: var(--ink); color: var(--paper); padding: 16px 32px; font-size: 15px; letter-spacing: 0.05em; display: inline-block; }
.btn:hover { background: var(--accent); color: var(--paper); }
.btn-ghost { border: 1px solid var(--ink); padding: 16px 32px; font-size: 15px; letter-spacing: 0.05em; display: inline-block; }

/* ── 数据条 ───────────────────────────────────────────── */
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 40px; }
.fact { background: var(--paper); padding: 22px 24px; }
.fact b { display: block; font-family: var(--latin); font-size: 30px; font-weight: 500; line-height: 1.2; }
.fact span { display: block; font-size: 13px; color: var(--muted); margin-top: 6px; letter-spacing: 0.06em; }

/* ── 表格 ─────────────────────────────────────────────── */
.tbl-scroll { overflow-x: auto; margin-top: 40px; }
table.spec { border-collapse: collapse; width: 100%; min-width: 560px; font-size: 15px; }
table.spec th, table.spec td { text-align: left; padding: 16px 18px; border-bottom: 1px solid var(--line); line-height: 1.8; }
table.spec th { font-weight: 500; color: var(--muted); font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase; font-family: var(--latin); white-space: nowrap; }
table.spec td { color: var(--body); }
table.spec td:first-child { color: var(--ink); font-weight: 500; white-space: nowrap; }

/* ── 首页移动端适配 ────────────────────────────────────────
   首页沿用设计稿的内联样式（按 1440px 画布绘制），内联样式优先级
   高于样式表，因此这里用 !important 在窄屏下覆盖其栅格与字号。
   桌面端渲染不受影响。 */
@media (max-width: 860px) {
  body > div > header { flex-wrap: wrap !important; padding: 14px 20px !important; gap: 14px !important; }
  body > div > header > nav { gap: 14px 18px !important; font-size: 13px !important; }

  #top { padding: 48px 20px 0 !important; }
  #top > div:nth-of-type(1) { grid-template-columns: 1fr !important; gap: 36px !important; align-items: start !important; }
  #top h1 { font-size: 40px !important; }
  #top > div:nth-of-type(1) p:first-child { margin-bottom: 18px !important; }
  #top > div:nth-of-type(1) > div:last-child { grid-template-rows: repeat(7, 26px) !important; }
  #top > div:nth-of-type(2) { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; margin-top: 48px !important; }
  #top > div:nth-of-type(2) > div { padding: 22px 0 24px !important; }
  #top > div:nth-of-type(2) div[style*="44px"] { font-size: 32px !important; }

  #business, #works, #about, #faq { padding-left: 20px !important; padding-right: 20px !important; padding-top: 64px !important; }
  #works { padding-left: 0 !important; padding-right: 0 !important; }
  #works > div:first-child { padding-left: 20px !important; padding-right: 20px !important; }
  #business h2, #works h2, #about h2, #faq h2, #contact h2 { font-size: 28px !important; }

  #about > div { grid-template-columns: 1fr !important; gap: 36px !important; }
  #about p[style*="26px"] { font-size: 21px !important; }

  #contact { padding: 56px 20px 32px !important; margin-top: 64px !important; }
  #contact > div:first-child { grid-template-columns: 1fr !important; gap: 40px !important; }
  #contact nav { margin-top: 44px !important; padding-top: 32px !important; }
}

@media (max-width: 720px) {
  .site-header { padding: 14px 20px; gap: 16px; }
  .site-nav { gap: 14px 18px; font-size: 13px; justify-content: flex-end; }
  .nav-cta { padding: 8px 16px; }
  .brand-en { display: none; }
  .sec, .page-hero, .cta-band { padding-left: 20px; padding-right: 20px; }
  .site-footer { padding: 56px 20px 32px; }
  .page-hero h1 { font-size: 34px; }
  .sec-head h2 { font-size: 28px; }
}