/* ===== 全局重置 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: #f5f7fa;
  color: #333;
  line-height: 1.6;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 顶部导航 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  z-index: 100;
  height: 64px;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  font-size: 28px;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(135deg, #1a73e8, #0d47a1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav {
  display: flex;
  gap: 32px;
}

.nav-link {
  font-size: 14px;
  color: #555;
  transition: color 0.2s;
  position: relative;
  padding: 4px 0;
}

.nav-link:hover,
.nav-link.active {
  color: #1a73e8;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -20px;
  left: 0;
  right: 0;
  height: 3px;
  background: #1a73e8;
  border-radius: 2px;
}

/* ===== 主视觉区 ===== */
.hero {
  position: relative;
  padding: 140px 24px 80px;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #e8f0fe 0%, #f0e6ff 50%, #fce4ec 100%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
}

.hero-title {
  font-size: 42px;
  font-weight: 800;
  color: #1a1a2e;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.hero-subtitle {
  font-size: 17px;
  color: #555;
  margin-bottom: 40px;
}

.search-box {
  background: #fff;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

.search-input-wrap {
  display: flex;
  align-items: center;
  background: #f5f7fa;
  border-radius: 12px;
  padding: 4px 4px 4px 16px;
  border: 2px solid transparent;
  transition: border-color 0.2s;
}

.search-input-wrap:focus-within {
  border-color: #1a73e8;
  background: #fff;
}

.search-icon {
  font-size: 18px;
  margin-right: 10px;
  color: #999;
}

.search-input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 15px;
  padding: 12px 8px;
  color: #333;
}

.search-btn {
  background: linear-gradient(135deg, #1a73e8, #1557b0);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}

.search-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26, 115, 232, 0.4);
}

.hot-tags {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.tag-label {
  font-size: 13px;
  color: #999;
}

.tag {
  font-size: 13px;
  color: #1a73e8;
  background: #e8f0fe;
  padding: 4px 12px;
  border-radius: 20px;
  transition: background 0.2s;
}

.tag:hover {
  background: #d2e3fc;
}

/* ===== 统计数字 ===== */
.stats {
  padding: 48px 24px;
  background: #fff;
}

.stats-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-number {
  font-size: 32px;
  font-weight: 800;
  background: linear-gradient(135deg, #1a73e8, #6c5ce7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  font-size: 14px;
  color: #777;
  margin-top: 4px;
}

/* ===== 智能匹配 ===== */
.match-section {
  padding: 80px 24px;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  color: #1a1a2e;
  text-align: center;
}

.section-desc {
  text-align: center;
  color: #666;
  margin-top: 8px;
  margin-bottom: 40px;
  font-size: 15px;
}

.match-card {
  max-width: 800px;
  margin: 0 auto;
  background: #fff;
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: #444;
  margin-bottom: 8px;
}

.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e8ecf0;
  border-radius: 10px;
  font-size: 14px;
  color: #333;
  background: #fafbfc;
  transition: border-color 0.2s, background 0.2s;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23999' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-select:focus,
.form-textarea:focus {
  border-color: #1a73e8;
  background: #fff;
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
  font-family: inherit;
}

.match-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, #1a73e8, #0d47a1);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  margin-top: 8px;
}

.match-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26, 115, 232, 0.35);
}

.btn-arrow {
  font-size: 20px;
  transition: transform 0.2s;
}

.match-btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* ===== 热门政策 ===== */
.popular-section {
  padding: 80px 24px;
  background: #fff;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.section-header .section-title {
  text-align: left;
}

.view-all {
  font-size: 14px;
  color: #1a73e8;
  font-weight: 600;
}

.view-all:hover {
  text-decoration: underline;
}

.policy-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.policy-card {
  background: #fafbfc;
  border-radius: 16px;
  padding: 24px;
  border: 1px solid #e8ecf0;
  transition: transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
}

.policy-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

.policy-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 12px;
}

.tag-energy {
  background: #e8f5e9;
  color: #2e7d32;
}
.tag-business {
  background: #e3f2fd;
  color: #1565c0;
}
.tag-housing {
  background: #fff3e0;
  color: #e65100;
}
.tag-education {
  background: #f3e5f5;
  color: #7b1fa2;
}
.tag-medical {
  background: #e8f5e9;
  color: #2e7d32;
}
.tag-agriculture {
  background: #f1f8e9;
  color: #558b2f;
}
.tag-tech {
  background: #e3f2fd;
  color: #1565c0;
}
.tag-social {
  background: #fce4ec;
  color: #c62828;
}

.policy-title {
  font-size: 16px;
  font-weight: 700;
  color: #1a1a2e;
  margin-bottom: 8px;
  line-height: 1.4;
}

.policy-country {
  font-size: 13px;
  color: #888;
  margin-bottom: 10px;
}

.policy-desc {
  font-size: 13px;
  color: #666;
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.policy-meta {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: #999;
}

/* ===== 底部 ===== */
.footer {
  background: #1a1a2e;
  color: #ccc;
  padding: 60px 24px 24px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: #999;
  margin-bottom: 10px;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  font-size: 13px;
  color: #777;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .policy-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-subtitle {
    font-size: 15px;
  }

  .stats-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .policy-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .match-card {
    padding: 24px;
  }
}