/* =========================================================
   霞工 · 环博会展位服务 —— 网站统一样式
   简洁商务风 · 环保绿色系 · 响应式
   ========================================================= */

:root {
  --primary: #0e6b4d;          /* 墨绿（主色） */
  --primary-dark: #0a4a36;     /* 深墨绿 */
  --primary-light: #e8f4ef;    /* 浅绿 */
  --accent: #12a37f;           /* 青绿（强调） */
  --accent-light: #d8f2e9;
  --text: #22333b;             /* 正文 */
  --text-light: #5b6b72;       /* 次要文字 */
  --bg: #ffffff;
  --bg-soft: #f4f8f6;
  --border: #e3ece8;
  --shadow: 0 12px 34px rgba(14, 107, 77, 0.08);
  --shadow-lg: 0 22px 50px rgba(14, 107, 77, 0.14);
  --radius: 14px;
  --maxw: 1140px;
}

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

html { scroll-behavior: smooth; }

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

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

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

/* ---------------- 顶部导航 ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: var(--primary-dark);
}

.brand .logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 17px;
}

.brand .logo-img {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 2px 8px rgba(14, 107, 77, 0.25);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-links a {
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--primary); }

.nav-links a.active { color: var(--primary); font-weight: 600; }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 3px;
  border-radius: 3px;
  background: var(--accent);
}

.nav-cta {
  padding: 9px 20px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff !important;
  font-weight: 600;
  transition: background 0.2s, transform 0.2s;
}

.nav-cta:hover { background: var(--accent); transform: translateY(-1px); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  width: 24px;
  height: 2.5px;
  background: var(--primary-dark);
  border-radius: 2px;
  transition: 0.25s;
}

/* ---------------- 通用区块 ---------------- */
.section { padding: 88px 0; }
.section-soft { background: var(--bg-soft); }

.section-head { text-align: center; max-width: 700px; margin: 0 auto 54px; }

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--accent);
  background: var(--accent-light);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1.3;
  margin-bottom: 14px;
}

.section-head p { color: var(--text-light); font-size: 16px; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.22s;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

.btn-white { background: #fff; color: var(--primary-dark); }
.btn-white:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

/* ---------------- 首页 Hero ---------------- */
.hero {
  position: relative;
  color: #fff;
  background:
    radial-gradient(1000px 500px at 85% -10%, rgba(18, 163, 127, 0.55), transparent 60%),
    radial-gradient(800px 480px at -10% 110%, rgba(10, 74, 54, 0.7), transparent 60%),
    linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 55%, #0d7f5c 100%);
  padding: 120px 0 130px;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.10) 1px, transparent 1px);
  background-size: 26px 26px;
  pointer-events: none;
}

.hero .container { position: relative; z-index: 2; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 13px;
  margin-bottom: 26px;
  backdrop-filter: blur(4px);
}

.hero h1 {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 22px;
}

.hero h1 .accent-text {
  background: linear-gradient(90deg, #7fe0c4, #d2f7ec);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.88);
  max-width: 520px;
  margin-bottom: 36px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-meta {
  display: flex;
  gap: 12px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.hero-meta .meta-item {
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 12px;
  padding: 14px 22px;
  text-align: center;
  backdrop-filter: blur(4px);
}

.hero-meta .meta-num { font-size: 26px; font-weight: 800; }
.hero-meta .meta-label { font-size: 13px; color: rgba(255, 255, 255, 0.75); }

/* Hero 右侧卡片 */
.hero-card {
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 20px;
  padding: 34px 30px;
  backdrop-filter: blur(8px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.22);
}

.hero-card h3 { font-size: 20px; margin-bottom: 6px; }
.hero-card .role { color: rgba(255, 255, 255, 0.8); font-size: 14px; margin-bottom: 22px; }

.hero-card ul { display: flex; flex-direction: column; gap: 15px; }

.hero-card li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14.5px;
  color: rgba(255, 255, 255, 0.92);
}

.hero-card li .dot {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #7fe0c4;
  margin-top: 8px;
}

/* ---------------- 卡片 ---------------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 28px;
  transition: transform 0.25s, box-shadow 0.25s;
}

.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.card .icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  font-size: 24px;
}

.card h3 { font-size: 19px; color: var(--primary-dark); margin-bottom: 10px; }
.card p { color: var(--text-light); font-size: 14.5px; }
.card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
}
.card .card-link:hover { color: var(--accent); }

/* ---------------- 关于 / 简介 ---------------- */
.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: center;
}

.about-visual {
  position: relative;
  border-radius: 20px;
  background: linear-gradient(150deg, var(--primary-light), var(--accent-light));
  padding: 46px 40px;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.about-visual .avatar {
  width: 92px;
  height: 92px;
  border-radius: 50%;
  overflow: hidden;
  background: #fff;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
  border: 3px solid #fff;
}

.about-visual .avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about-visual h3 { color: var(--primary-dark); font-size: 22px; }
.about-visual .sub { color: var(--text-light); font-size: 14px; margin-top: 4px; }

.about-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

.tag {
  background: #fff;
  color: var(--primary);
  border: 1px solid rgba(14, 107, 77, 0.25);
  border-radius: 999px;
  padding: 6px 15px;
  font-size: 13px;
  font-weight: 500;
}

.about-text h2 { font-size: 30px; color: var(--primary-dark); margin-bottom: 20px; line-height: 1.35; }
.about-text p { color: var(--text-light); margin-bottom: 16px; font-size: 15.5px; }

.points { display: flex; flex-direction: column; gap: 14px; margin: 24px 0; }

.point { display: flex; gap: 12px; align-items: flex-start; }
.point .check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-size: 13px;
  margin-top: 3px;
}
.point b { color: var(--primary-dark); }

/* ---------------- 服务流程 ---------------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }

.step {
  text-align: center;
  position: relative;
  padding: 0 8px;
}

.step .num {
  width: 54px;
  height: 54px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 20px;
  font-weight: 800;
  box-shadow: var(--shadow);
}

.step h4 { color: var(--primary-dark); font-size: 15.5px; margin-bottom: 6px; }
.step p { color: var(--text-light); font-size: 13px; }

.step::after {
  content: "";
  position: absolute;
  top: 27px;
  left: calc(50% + 34px);
  width: calc(100% - 68px);
  height: 2px;
  background: var(--border);
}

.step:last-child::after { display: none; }

/* ---------------- 文章卡片 ---------------- */
.article-card { overflow: hidden; padding: 0; }

.article-card .thumb {
  height: 170px;
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  position: relative;
  display: grid;
  place-items: center;
  font-size: 40px;
  color: var(--primary);
}

.article-card .body { padding: 22px 26px 26px; }

.article-card .meta { display: flex; gap: 12px; font-size: 12.5px; color: var(--text-light); margin-bottom: 10px; }
.article-card h3 { font-size: 17.5px; color: var(--primary-dark); line-height: 1.45; margin-bottom: 8px; }
.article-card h3 a:hover { color: var(--accent); }
.article-card .body p { font-size: 14px; color: var(--text-light); }

/* ---------------- CTA 区块 ---------------- */
.cta {
  background:
    radial-gradient(700px 380px at 90% 20%, rgba(18, 163, 127, 0.45), transparent 60%),
    linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  border-radius: 22px;
  padding: 64px 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta h2 { font-size: 32px; margin-bottom: 14px; }
.cta p { color: rgba(255, 255, 255, 0.86); max-width: 560px; margin: 0 auto 30px; }
.cta .btn-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------------- 页脚 ---------------- */
.site-footer { background: #0b2b22; color: rgba(255, 255, 255, 0.72); padding: 48px 0 30px; margin-top: 40px; }

.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }

.footer-brand { font-size: 19px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.footer-grid p { font-size: 13.5px; line-height: 1.8; }

.footer-grid h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }

.footer-grid ul { display: flex; flex-direction: column; gap: 9px; }
.footer-grid ul a { font-size: 13.5px; transition: color 0.2s; }
.footer-grid ul a:hover { color: #7fe0c4; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  margin-top: 34px;
  padding-top: 22px;
  text-align: center;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.5);
}

/* ---------------- 内页 Hero ---------------- */
.page-hero {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  padding: 72px 0 76px;
  text-align: center;
}

.page-hero .eyebrow { background: rgba(255,255,255,0.16); color: #fff; }
.page-hero h1 { font-size: 38px; font-weight: 800; margin-bottom: 12px; }
.page-hero p { color: rgba(255, 255, 255, 0.85); max-width: 620px; margin: 0 auto; }

/* ---------------- 联系方式 ---------------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }

.contact-info { display: flex; flex-direction: column; gap: 20px; }

.contact-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
}

.contact-item .icon {
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: grid;
  place-items: center;
  font-size: 20px;
}

.contact-item h4 { color: var(--primary-dark); font-size: 15px; margin-bottom: 4px; }
.contact-item p { color: var(--text-light); font-size: 14.5px; }

.contact-form {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 32px;
  box-shadow: var(--shadow);
}

.contact-form h3 { color: var(--primary-dark); font-size: 21px; margin-bottom: 8px; }
.contact-form .sub { color: var(--text-light); font-size: 14px; margin-bottom: 24px; }

.form-group { margin-bottom: 18px; }

.form-group label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 7px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14.5px;
  font-family: inherit;
  color: var(--text);
  background: var(--bg-soft);
  transition: border 0.2s, box-shadow 0.2s;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(18, 163, 127, 0.15);
  background: #fff;
}

.form-tip { font-size: 12.5px; color: var(--text-light); margin-top: 10px; }

/* ---------------- 文章详情 ---------------- */
.article-wrap { max-width: 800px; margin: 0 auto; }

.article-head { text-align: center; margin-bottom: 34px; }

.article-head h1 { font-size: 32px; color: var(--primary-dark); line-height: 1.4; margin-bottom: 14px; }

.article-head .meta { display: flex; justify-content: center; gap: 18px; color: var(--text-light); font-size: 13.5px; }

.article-body { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px 44px; box-shadow: var(--shadow); }

.article-body h2 { font-size: 22px; color: var(--primary-dark); margin: 30px 0 12px; }
.article-body h3 { font-size: 18px; color: var(--primary-dark); margin: 24px 0 10px; }
.article-body p { margin-bottom: 16px; color: var(--text); font-size: 15.5px; }
.article-body ul { margin: 0 0 16px 22px; list-style: disc; }
.article-body li { margin-bottom: 8px; font-size: 15.5px; }

.article-body blockquote {
  border-left: 4px solid var(--accent);
  background: var(--bg-soft);
  padding: 16px 20px;
  border-radius: 0 10px 10px 0;
  margin: 20px 0;
  color: var(--text-light);
}

/* =========================================================
   展会项目页（上海环博会 / 资源再生展区 / 沙特环博会）
   ========================================================= */
/* 项目页顶部：主色渐变 + 日期徽章 */
.project-hero {
  background:
    radial-gradient(900px 460px at 88% -10%, rgba(18, 163, 127, 0.5), transparent 60%),
    linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  padding: 76px 0 84px;
  position: relative;
  overflow: hidden;
}
.project-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.09) 1px, transparent 1px);
  background-size: 26px 26px;
  pointer-events: none;
}
.project-hero .container { position: relative; z-index: 2; }
.project-hero .eyebrow { background: rgba(255,255,255,0.16); color: #fff; }
.project-hero h1 { font-size: 38px; font-weight: 800; line-height: 1.3; margin-bottom: 16px; }
.project-hero .lead { color: rgba(255,255,255,0.88); font-size: 16px; max-width: 720px; line-height: 1.9; }
.project-hero .date-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 600;
  margin-top: 24px;
  backdrop-filter: blur(4px);
}
/* 项目页之间切换 */
.project-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: -26px auto 0;
  position: relative;
  z-index: 3;
  max-width: 1080px;
}
.project-nav a {
  flex: 1 1 200px;
  display: flex;
  align-items: center;
  gap: 12px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 18px;
  box-shadow: var(--shadow);
  transition: transform 0.22s, box-shadow 0.22s, border-color 0.22s;
  color: var(--text);
}
.project-nav a:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
.project-nav a.active { border-color: var(--primary); background: var(--primary-light); }
.project-nav .pn-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary);
  display: grid;
  place-items: center;
}
.project-nav .pn-icon svg { width: 22px; height: 22px; }
.project-nav .pn-name { font-size: 15px; font-weight: 700; color: var(--primary-dark); }
.project-nav .pn-tag { font-size: 12px; color: var(--text-light); }
/* 关键数据条 */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform 0.22s;
}
.stat-item:hover { transform: translateY(-4px); }
.stat-item .num { font-size: 30px; font-weight: 800; color: var(--primary); line-height: 1.2; }
.stat-item .label { font-size: 13.5px; color: var(--text-light); margin-top: 6px; }
/* 双栏内容 */
.two-col { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 34px; align-items: start; }
.panel {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 30px;
}
.panel h3 { font-size: 18px; color: var(--primary-dark); margin-bottom: 14px; }
.panel p, .panel li { font-size: 14.5px; color: var(--text); }
.panel ul { margin: 0 0 0 18px; list-style: disc; }
.panel li { margin-bottom: 8px; }
/* 展会信息表 */
.info-table { width: 100%; border-collapse: collapse; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.info-table th, .info-table td { padding: 14px 18px; font-size: 14.5px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
.info-table th { background: var(--primary-light); color: var(--primary-dark); font-weight: 700; width: 150px; white-space: nowrap; }
.info-table tr:last-child th, .info-table tr:last-child td { border-bottom: none; }
/* 编号展品板块 */
.zone-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.zone-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  padding: 22px 24px;
  transition: transform 0.22s, box-shadow 0.22s;
}
.zone-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.zone-item .z-num { font-size: 13px; font-weight: 700; color: var(--accent); letter-spacing: 1px; }
.zone-item h4 { font-size: 17px; color: var(--primary-dark); margin: 6px 0 8px; }
.zone-item p { font-size: 14px; color: var(--text-light); line-height: 1.8; }
/* 标签云（展品/观众/展团） */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-cloud .tag { padding: 8px 16px; }
/* 价值点卡片（图标在上） */
.value-card { text-align: left; }
.value-card .icon { width: 52px; height: 52px; border-radius: 13px; }
.value-card .icon svg { width: 26px; height: 26px; }
/* 提示条 */
.note-bar {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--accent-light);
  border: 1px solid rgba(18,163,127,0.25);
  border-radius: 12px;
  padding: 18px 22px;
  margin: 26px 0;
}
.note-bar svg { flex-shrink: 0; width: 22px; height: 22px; color: var(--accent); margin-top: 3px; }
.note-bar p { font-size: 14px; color: var(--text); }
.note-bar p b { color: var(--primary-dark); }
/* 页内小标题带编号 */
.sub-head {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 12px;
}
.sub-head .snum {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 11px;
  background: var(--primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 17px;
}
/* 展会列表行 */
.expo-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 22px;
  margin-bottom: 12px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.expo-row:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.expo-row .expo-name { font-weight: 700; color: var(--primary-dark); font-size: 15px; }
.expo-row .expo-info { font-size: 13.5px; color: var(--text-light); }
.expo-row .expo-flag { font-size: 12.5px; font-weight: 600; color: var(--accent); background: var(--accent-light); padding: 4px 12px; border-radius: 999px; white-space: nowrap; }
/* 项目总览卡片 */
.project-card { overflow: hidden; padding: 0; display: flex; flex-direction: column; }
.project-card .pc-head {
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  padding: 30px 28px;
  display: flex;
  align-items: center;
  gap: 18px;
}
.project-card .pc-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 15px;
  background: var(--primary);
  color: #fff;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow);
}
.project-card .pc-icon svg { width: 28px; height: 28px; }
.project-card .pc-title { font-size: 19px; font-weight: 800; color: var(--primary-dark); line-height: 1.35; }
.project-card .pc-tagline { font-size: 13px; color: var(--text-light); margin-top: 3px; }
.project-card .pc-body { padding: 24px 28px 28px; flex: 1; display: flex; flex-direction: column; }
.project-card .pc-facts { display: flex; flex-direction: column; gap: 8px; margin: 4px 0 16px; }
.project-card .pc-fact { display: flex; gap: 10px; font-size: 13.5px; color: var(--text); }
.project-card .pc-fact b { color: var(--primary-dark); font-weight: 600; white-space: nowrap; }
.project-card .pc-desc { font-size: 14px; color: var(--text-light); line-height: 1.8; flex: 1; }
.project-card .btn { align-self: flex-start; margin-top: 20px; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 960px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .zone-list { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .project-hero h1 { font-size: 32px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 30px 20px; }
  .step::after { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 36px; }
}

@media (max-width: 720px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .nav-links.open { max-height: 360px; }

  .nav-links a { padding: 15px 24px; width: 100%; border-top: 1px solid var(--border); }
  .nav-links a.active::after { display: none; }
  .nav-links .nav-cta { border-radius: 0; }

  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 27px; }
  .hero { padding: 84px 0 90px; }
  .hero h1 { font-size: 30px; }
  .cta { padding: 46px 26px; }
  .cta h2 { font-size: 25px; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .article-body { padding: 26px 22px; }
  .steps { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .stat-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .stat-item { padding: 18px 12px; }
  .stat-item .num { font-size: 24px; }
  .project-nav { margin-top: -16px; }
  .project-hero { padding: 56px 0 66px; }
  .info-table th { width: 100px; }
  .expo-row { flex-direction: column; align-items: flex-start; gap: 8px; }
}