* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:           #F6F8FA;
  --bg-soft:      #EDF1F5;
  --card:         #FFFFFF;
  --brand:        #0F6B5C;
  --brand-deep:   #0A4A40;
  --brand-soft:   #E0F0EC;
  --brand-pale:   #F0F8F6;
  --accent:       #D97706;
  --accent-deep:  #B45309;
  --accent-pale:  #FEF3C7;
  --ink:          #1A202C;
  --ink-2:        #4A5568;
  --ink-3:        #8A94A6;
  --border:       #DDE4EC;
  --border-soft:  #EDF2F7;
  --max:          1080px;
}

html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC",
               "Microsoft YaHei", sans-serif;
  font-size: 15.5px; line-height: 1.85; color: var(--ink-2);
  background: var(--bg); -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(246, 248, 250, 0.94);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
  padding-top: env(safe-area-inset-top);
}
.header-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 28px;
  height: 72px; display: flex; align-items: center;
  justify-content: space-between; gap: 20px; position: relative;
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 8px;
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-family: "Noto Serif SC", serif;
  font-size: 18px; font-weight: 700; flex-shrink: 0;
}
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand-name {
  font-family: "Noto Serif SC", serif; font-size: 16px; font-weight: 600;
  color: var(--brand); letter-spacing: 0.04em;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.brand-en {
  font-size: 10px; color: var(--ink-3); letter-spacing: 0.18em;
  margin-top: 1px; white-space: nowrap;
}
.site-nav { display: flex; gap: 4px; }
.site-nav a {
  font-size: 14.5px; color: var(--ink-2);
  padding: 8px 16px; border-radius: 6px;
  transition: color .18s, background .18s;
}
.site-nav a:hover, .site-nav a.active {
  color: var(--brand); background: var(--brand-pale);
}
.menu-btn {
  display: none; background: none; border: none;
  padding: 8px; cursor: pointer; color: var(--brand); border-radius: 6px;
}

/* ---------- 容器 ---------- */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 28px; }

/* ---------- 面包屑 ---------- */
.crumb { padding: 24px 0 6px; font-size: 13px; color: var(--ink-3); }
.crumb a { color: var(--ink-3); }
.crumb a:hover { color: var(--brand); }
.crumb .sep { margin: 0 8px; color: var(--border); }
.crumb .now { color: var(--ink-2); }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 96px 0 72px;
  background: linear-gradient(180deg, var(--brand) 0%, var(--brand-deep) 100%);
  color: #fff;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 15% 25%, rgba(217, 119, 6, 0.18) 0%, transparent 42%),
    radial-gradient(circle at 88% 78%, rgba(217, 119, 6, 0.10) 0%, transparent 42%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; max-width: var(--max); margin: 0 auto; padding: 0 28px; }
.hero-tag {
  display: inline-block;
  font-size: 12.5px; letter-spacing: 0.28em;
  color: var(--accent-pale);
  padding: 6px 14px;
  border: 1px solid rgba(217, 119, 6, 0.35);
  border-radius: 4px;
  margin-bottom: 28px;
}
.hero h1 {
  font-family: "Noto Serif SC", serif;
  font-size: clamp(28px, 4.4vw, 44px);
  font-weight: 700; line-height: 1.4;
  letter-spacing: 0.02em;
  margin-bottom: 24px;
  max-width: 760px;
}
.hero h1 .accent { color: var(--accent-pale); }
.hero-desc {
  font-size: 16px; line-height: 2; color: rgba(255, 255, 255, 0.78);
  max-width: 620px; margin-bottom: 44px;
}
.hero-meta {
  display: flex; flex-wrap: wrap; gap: 16px 36px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}
.hero-meta-item {
  font-size: 13.5px; color: rgba(255, 255, 255, 0.6);
  display: flex; align-items: baseline; gap: 10px;
}
.hero-meta-item strong {
  font-family: "Noto Serif SC", serif;
  font-size: 18px; color: var(--accent-pale); font-weight: 600;
}

/* ---------- 页面标题块 ---------- */
.page-head { padding: 56px 0 24px; }
.page-head .eyebrow {
  font-size: 12.5px; letter-spacing: 0.25em;
  color: var(--accent-deep); margin-bottom: 14px;
}
.page-head h1 {
  font-family: "Noto Serif SC", serif;
  font-size: clamp(26px, 3.8vw, 36px); font-weight: 700;
  color: var(--brand); line-height: 1.5; margin-bottom: 16px;
}
.page-head .lead {
  font-size: 15px; color: var(--ink-3); line-height: 1.95;
  max-width: 660px;
}

/* ---------- Section ---------- */
.section { padding: 56px 0; }
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 20px; flex-wrap: wrap;
  padding-bottom: 16px; border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}
.section-head h2 {
  font-family: "Noto Serif SC", serif; font-size: 19px;
  font-weight: 600; color: var(--brand); letter-spacing: 0.06em;
}
.section-head .more { font-size: 13px; color: var(--accent-deep); }
.section-head .more:hover { text-decoration: underline; }

/* ---------- 服务卡片 ---------- */
.services-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px;
}
.service-card {
  display: block; background: var(--card);
  border: 1px solid var(--border); border-radius: 12px;
  padding: 30px 28px;
  transition: border-color .2s, box-shadow .2s, transform .2s;
  position: relative; overflow: hidden;
}
.service-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px; background: var(--brand); opacity: 0;
  transition: opacity .25s;
}
.service-card:hover {
  border-color: var(--brand); transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(15, 107, 92, 0.08);
}
.service-card:hover::before { opacity: 1; }
.service-num {
  font-family: "Noto Serif SC", serif;
  font-size: 13px; color: var(--accent-deep);
  letter-spacing: 0.1em; margin-bottom: 12px;
}
.service-card h3 {
  font-family: "Noto Serif SC", serif;
  font-size: 17.5px; font-weight: 600;
  color: var(--brand); margin-bottom: 10px; line-height: 1.55;
}
.service-card p {
  font-size: 14px; color: var(--ink-2); line-height: 1.9;
  margin-bottom: 14px;
}
.service-more {
  font-size: 13px; color: var(--accent-deep); font-weight: 500;
}
.service-card:hover .service-more { text-decoration: underline; }

/* ---------- 公司信息块 ---------- */
.info-panel {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 32px 32px;
}
.info-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 22px 36px;
}
.info-item { padding-bottom: 16px; border-bottom: 1px dashed var(--border-soft); }
.info-item:last-child { border-bottom: none; }
.info-item .k {
  font-size: 12.5px; color: var(--ink-3);
  letter-spacing: 0.1em; margin-bottom: 6px;
}
.info-item .v {
  font-family: "Noto Serif SC", serif;
  font-size: 15.5px; color: var(--brand); line-height: 1.7;
  word-break: break-all;
}

/* ---------- 正文 ---------- */
.article-body {
  font-size: 15.5px; line-height: 2.05; color: var(--ink-2);
  max-width: 700px;
}
.article-body p { margin-bottom: 18px; }
.article-body h2 {
  font-family: "Noto Serif SC", serif;
  font-size: 18px; color: var(--brand);
  margin: 32px 0 14px; letter-spacing: 0.04em;
  padding-bottom: 8px; border-bottom: 1px solid var(--border-soft);
}
.article-body h2:first-child { margin-top: 0; }
.article-body ul { margin: 0 0 18px 22px; }
.article-body li { margin-bottom: 8px; }

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: 60px;
  padding: 56px 0 calc(36px + env(safe-area-inset-bottom));
  background: var(--brand-deep); color: rgba(255, 255, 255, 0.55);
  font-size: 13px; line-height: 2;
}
.footer-inner { max-width: var(--max); margin: 0 auto; padding: 0 28px; }
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr;
  gap: 44px; padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand {
  display: flex; align-items: center; gap: 12px; margin-bottom: 16px;
}
.footer-brand .brand-mark {
  background: var(--accent); color: var(--brand-deep);
}
.footer-brand-name {
  font-family: "Noto Serif SC", serif;
  font-size: 15.5px; color: #fff; font-weight: 600;
}
.footer-desc { font-size: 13px; line-height: 2; color: rgba(255, 255, 255, 0.5); max-width: 340px; }
.footer-col h4 {
  font-family: "Noto Serif SC", serif;
  font-size: 14px; color: #fff; font-weight: 600;
  letter-spacing: 0.08em; margin-bottom: 16px;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a {
  color: rgba(255, 255, 255, 0.55); font-size: 13.5px;
  transition: color .18s;
}
.footer-col a:hover { color: var(--accent-pale); }
.footer-bottom {
  padding-top: 24px;
  display: flex; flex-wrap: wrap; justify-content: space-between;
  align-items: center; gap: 12px;
  font-size: 12.5px; color: rgba(255, 255, 255, 0.4);
}
.footer-beian {
  color: rgba(255, 255, 255, 0.5);
  border-bottom: 1px dashed rgba(255, 255, 255, 0.2);
  padding-bottom: 1px;
  transition: color .18s, border-color .18s;
}
.footer-beian:hover { color: var(--accent-pale); border-color: var(--accent); }

/* ---------- 响应式 ---------- */
@media (max-width: 760px) {
  .header-inner { padding: 0 18px; height: 64px; }
  .wrap, .hero-inner, .footer-inner { padding: 0 18px; }

  .menu-btn { display: block; }
  .site-nav {
    display: none; position: absolute; top: 64px;
    left: 0; right: 0; background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column; gap: 2px; padding: 8px 12px 14px;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 11px 14px; font-size: 15px; }

  .hero { padding: 64px 0 48px; }
  .page-head { padding: 36px 0 16px; }
  .section { padding: 40px 0; }

  .services-grid { grid-template-columns: 1fr; gap: 14px; }
  .service-card { padding: 24px 22px; }
  .info-panel { padding: 24px 22px; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}