/*
  设计语言：新艺术风格 · 现代轻奢
  配色：祖母绿 #0F4C3A + 香槟金 #D4AF37 + 象牙白 #FFFFF0
  字体：Playfair Display / Noto Serif SC（标题）+ 系统无衬线（正文）
  自包含实现：不依赖国外图床，保证国内服务器稳定渲染
*/

:root {
  --emerald: #0F4C3A;
  --emerald-light: #1a6b52;
  --emerald-dark: #0a3326;
  --gold: #D4AF37;
  --gold-light: #e6c966;
  --ivory: #FFFFF0;
  --ink: #2b2b2b;
  --muted: #6b7772;
  --line: #e6e9e7;
  --bg-soft: #f6f8f6;

  --font-display: "Playfair Display", "Noto Serif SC", Georgia, "Songti SC", serif;
  --font-body: "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  line-height: 1.8;
  background: var(--ivory);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--font-display); font-weight: 700; letter-spacing: 0.5px; }

a { text-decoration: none; color: inherit; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* ============ 金色分隔线 ============ */
.gold-divider {
  height: 2px;
  width: 90px;
  background: linear-gradient(to right, var(--gold), transparent);
  margin: 18px 0;
}
.gold-divider.center {
  margin: 16px auto 22px;
  background: linear-gradient(to right, transparent, var(--gold), transparent);
}

/* ============ 按钮 ============ */
.btn {
  display: inline-block;
  padding: 13px 34px;
  border-radius: 4px;
  font-size: 15px;
  letter-spacing: 1px;
  transition: transform .3s ease, box-shadow .3s ease, background .3s ease, color .3s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--emerald), var(--emerald-dark));
  color: var(--ivory);
  box-shadow: 0 8px 24px rgba(15, 76, 58, 0.28);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 32px rgba(15, 76, 58, 0.36); }
.btn-ghost {
  border: 1.5px solid rgba(255, 255, 240, 0.7);
  color: var(--ivory);
  margin-left: 14px;
}
.btn-ghost:hover { background: rgba(255, 255, 240, 0.12); transform: translateY(-3px); }
.btn-gold {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: var(--emerald-dark);
  font-weight: 700;
  box-shadow: 0 10px 28px rgba(212, 175, 55, 0.35);
}
.btn-gold:hover { transform: translateY(-3px); box-shadow: 0 16px 36px rgba(212, 175, 55, 0.45); }

/* ============ 顶部导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 240, 0.9);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid rgba(15, 76, 58, 0.08);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--emerald), var(--emerald-dark));
  color: var(--gold);
  font-family: var(--font-display);
  font-size: 20px;
}
.brand-text { font-family: var(--font-display); font-size: 20px; font-weight: 700; color: var(--emerald); }
.menu a { margin-left: 30px; font-size: 15px; color: #46534e; position: relative; }
.menu a::after {
  content: ''; position: absolute; left: 0; bottom: -6px; height: 2px; width: 0;
  background: var(--gold); transition: width .3s ease;
}
.menu a:hover { color: var(--emerald); }
.menu a:hover::after { width: 100%; }

/* ============ 首屏 ============ */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(1200px 600px at 78% 20%, rgba(212, 175, 55, 0.16), transparent 60%),
    radial-gradient(900px 700px at 12% 85%, rgba(26, 107, 82, 0.5), transparent 60%),
    linear-gradient(135deg, var(--emerald-dark) 0%, var(--emerald) 55%, var(--emerald-light) 100%);
}
.hero-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,240,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,240,0.04) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at 60% 40%, black, transparent 80%);
}
.hero-inner { position: relative; z-index: 2; max-width: 760px; color: var(--ivory); }
.hero-eyebrow { letter-spacing: 6px; font-size: 13px; color: var(--gold-light); margin-bottom: 18px; }
.hero-title { font-size: clamp(42px, 7vw, 76px); line-height: 1.1; color: var(--ivory); }
.hero-subtitle { font-size: clamp(18px, 2.4vw, 24px); color: rgba(255,255,240,0.92); margin-bottom: 12px; }
.hero-desc { font-size: 16px; color: rgba(255,255,240,0.75); max-width: 560px; margin-bottom: 34px; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; }

.scroll-hint {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); z-index: 2;
  width: 26px; height: 42px; border: 2px solid rgba(255,255,240,0.5); border-radius: 16px;
  display: grid; justify-items: center; padding-top: 8px;
}
.scroll-hint span {
  width: 5px; height: 10px; border-radius: 3px; background: var(--gold);
  animation: scrolldot 1.6s ease-in-out infinite;
}
@keyframes scrolldot { 0%,100%{ transform: translateY(0); opacity:1 } 50%{ transform: translateY(8px); opacity:.3 } }

/* ============ 数据带 ============ */
.stats { background: linear-gradient(135deg, var(--emerald-dark), var(--emerald)); padding: 56px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat { text-align: center; color: var(--ivory); }
.stat-num { font-family: var(--font-display); font-size: 40px; font-weight: 700; color: var(--gold); }
.stat-label { font-size: 14px; color: rgba(255,255,240,0.78); margin-top: 6px; letter-spacing: 1px; }

/* ============ 区块通用 ============ */
.section { padding: 92px 0; }
.section-alt { background: var(--bg-soft); }
.section-head { text-align: center; margin-bottom: 52px; }
.section-title { font-size: clamp(28px, 4vw, 40px); color: var(--emerald); }
.section-title.left { text-align: left; }
.section-sub { color: var(--muted); font-size: 15px; max-width: 640px; margin: 0 auto; }

/* ============ 业务卡片 ============ */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 34px 28px;
  transition: transform .4s ease, box-shadow .4s ease, border-color .4s ease;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: ''; position: absolute; top: 0; left: 0; height: 3px; width: 0;
  background: linear-gradient(to right, var(--gold), var(--gold-light)); transition: width .4s ease;
}
.card:hover { transform: translateY(-8px); box-shadow: 0 22px 46px rgba(15, 76, 58, 0.12); border-color: rgba(15,76,58,0.18); }
.card:hover::before { width: 100%; }
.card-icon {
  width: 60px; height: 60px; border-radius: 14px;
  display: grid; place-items: center; margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(15,76,58,0.08), rgba(15,76,58,0.03));
  color: var(--emerald);
}
.card-icon svg { width: 30px; height: 30px; }
.card:hover .card-icon { background: linear-gradient(135deg, var(--emerald), var(--emerald-dark)); color: var(--gold); }
.card h3 { font-size: 20px; color: var(--emerald); margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 14.5px; margin: 0; }

/* ============ 经营范围原文 ============ */
.scope-box {
  margin-top: 44px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold);
  border-radius: 12px;
  padding: 30px 34px;
  box-shadow: 0 10px 30px rgba(15,76,58,0.05);
}
.scope-box h3 { font-size: 18px; color: var(--emerald); margin-bottom: 16px; }
.scope-box p { font-size: 14px; color: #5b6560; margin-bottom: 12px; }
.scope-box p:last-child { margin-bottom: 0; }
.scope-tag {
  display: inline-block; margin-right: 10px;
  background: rgba(15,76,58,0.08); color: var(--emerald);
  font-size: 12px; padding: 2px 10px; border-radius: 20px;
  transform: translateY(-1px);
}

/* ============ 服务优势 ============ */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature {
  background: #fff; border-radius: 14px; padding: 34px 26px;
  border: 1px solid var(--line); transition: transform .4s ease, box-shadow .4s ease;
}
.feature:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(15,76,58,0.1); }
.feature-badge {
  font-family: var(--font-display); font-size: 30px; font-weight: 700;
  color: var(--gold); margin-bottom: 12px;
}
.feature h3 { font-size: 18px; color: var(--emerald); margin-bottom: 8px; }
.feature p { color: var(--muted); font-size: 14px; }

/* ============ 关于我们 ============ */
.about-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: center; }
.about-media { position: relative; min-height: 380px; }
.about-art {
  position: absolute; inset: 0; border-radius: 18px;
  background:
    radial-gradient(600px 300px at 30% 20%, rgba(212,175,55,0.25), transparent 60%),
    linear-gradient(135deg, var(--emerald), var(--emerald-dark));
  box-shadow: 0 30px 60px rgba(15,76,58,0.25);
}
.about-shape { position: absolute; border-radius: 18px; z-index: -1; opacity: .25; }
.shape-a { width: 160px; height: 160px; right: -22px; bottom: -22px; background: linear-gradient(135deg, var(--emerald), var(--gold)); }
.shape-b { width: 110px; height: 110px; left: -22px; top: -22px; border-radius: 50%; background: linear-gradient(135deg, var(--gold), var(--emerald)); }
.about-text p { color: #4d5852; margin-bottom: 16px; }
.about-text .btn { margin-top: 12px; }

/* ============ CTA ============ */
.cta {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--emerald-dark), var(--emerald));
  padding: 84px 0;
}
.cta::before, .cta::after {
  content: ''; position: absolute; width: 380px; height: 380px; border-radius: 50%;
  background: var(--gold); filter: blur(120px); opacity: .12;
}
.cta::before { top: -140px; left: -80px; }
.cta::after { bottom: -160px; right: -60px; }
.cta-inner { position: relative; z-index: 2; text-align: center; color: var(--ivory); }
.cta-inner h2 { font-size: clamp(26px, 4vw, 38px); color: var(--ivory); margin-bottom: 12px; }
.cta-inner p { color: rgba(255,255,240,0.8); margin-bottom: 28px; }

/* ============ 联系我们 ============ */
.contact-card {
  max-width: 720px; margin: 0 auto;
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 14px 34px; box-shadow: 0 12px 34px rgba(15,76,58,0.06);
}
.contact-list { list-style: none; }
.contact-list li {
  display: flex; gap: 20px; padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.contact-list li:last-child { border-bottom: none; }
.contact-key {
  flex: 0 0 96px; color: var(--emerald); font-weight: 600; letter-spacing: 1px;
}
.contact-val { color: #4d5852; }

/* ============ 页脚 ============ */
.site-footer { background: var(--emerald-dark); color: rgba(255,255,240,0.75); padding: 46px 0; text-align: center; }
.footer-brand { font-family: var(--font-display); font-size: 22px; color: var(--ivory); margin-bottom: 10px; }
.site-footer p { font-size: 13.5px; margin: 4px 0; }
.beian a { color: var(--gold-light); }
.beian a:hover { text-decoration: underline; }

/* ============ 滚动渐显 ============ */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s cubic-bezier(.4,0,.2,1), transform .8s cubic-bezier(.4,0,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* ============ 响应式 ============ */
@media (max-width: 900px) {
  .cards, .features { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .about-grid { grid-template-columns: 1fr; }
  .about-media { min-height: 240px; }
}
@media (max-width: 620px) {
  .menu { display: none; }
  .cards, .features { grid-template-columns: 1fr; }
  .hero { min-height: 82vh; }
  .btn-ghost { margin-left: 0; margin-top: 12px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .contact-list li { flex-direction: column; gap: 4px; }
}