/* ============================================
   Awwwards-Standard CSS Design System
   Client: 国际人h5 (guojirenh5.cn)
   Style: 珊瑚暖调 + 薄荷墨绿 · 活力层叠
   ============================================ */

/* 自定义属性 */
:root {
  --coral: #e87a5d;
  --coral-light: #ffede6;
  --coral-dark: #c45a3d;
  --mint: #2d6a4f;
  --mint-light: #40916c;
  --cream: #fff5f0;
  --white: #ffffff;
  --gray-100: #f7f3f0;
  --gray-200: #e8e2dd;
  --gray-700: #4a403b;
  --gray-900: #1a1615;
  --shadow-soft: 0 8px 30px rgba(232, 122, 93, 0.12);
  --radius: 14px;
  --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

/* 基础重置 */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: var(--cream);
  color: var(--gray-900);
  line-height: 1.6;
}

/* 核心布局 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section:nth-child(even) {
  background: var(--coral-light);
  position: relative;
}

.section:nth-child(even)::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--coral), transparent);
}

/* 导航 — 固定顶部 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 250, 247, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: 0 1px 10px rgba(232, 122, 93, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--gray-900);
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--coral), var(--mint));
  color: #fff;
  font-weight: 700;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-700);
  transition: var(--transition);
  position: relative;
  padding-bottom: 4px;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--coral);
  transition: var(--transition);
}

.main-nav a:hover {
  color: var(--coral-dark);
}

.main-nav a:hover::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 24px;
  border-radius: 50px;
  color: #fff !important;
  font-weight: 700;
  background: linear-gradient(135deg, var(--coral), var(--mint));
  box-shadow: 0 4px 14px rgba(232, 122, 93, 0.3);
  transition: var(--transition);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(232, 122, 93, 0.4);
}

.nav-cta::after {
  display: none !important;
}

.menu-toggle {
  display: none;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border: none;
  background: var(--coral-light);
  border-radius: 10px;
  cursor: pointer;
  color: var(--coral-dark);
  font-size: 1.2rem;
}

/* 首页Hero */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 0 60px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(232, 122, 93, 0.08), transparent 70%);
  pointer-events: none;
}

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

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 20px;
  background: var(--mint-light);
  color: #fff;
  letter-spacing: 0.5px;
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.1;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--gray-900) 40%, var(--coral-dark) 70%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.75;
  max-width: 560px;
  margin-bottom: 36px;
  color: var(--gray-700);
}

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

.hero-image {
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  position: relative;
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.95rem;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--coral), var(--mint));
  box-shadow: 0 4px 16px rgba(232, 122, 93, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(232, 122, 93, 0.4);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--coral);
  color: var(--coral-dark);
}

.btn-outline:hover {
  background: var(--coral);
  color: #fff;
  border-color: var(--coral);
  transform: translateY(-3px);
}

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 14px;
  text-transform: uppercase;
  color: var(--mint);
  position: relative;
  padding-left: 30px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 2px;
  background: var(--coral);
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-desc {
  max-width: 600px;
  opacity: 0.75;
  margin-bottom: 44px;
  color: var(--gray-700);
  line-height: 1.7;
}

/* 卡片网格 */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}

.category-card {
  border-radius: 18px;
  padding: 32px 28px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--coral), var(--mint));
  opacity: 0;
  transition: var(--transition);
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(232, 122, 93, 0.12);
  border-color: var(--coral-light);
}

.category-card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
  background: var(--coral-light);
  color: var(--coral-dark);
}

.card-link {
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--coral-dark);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.card-link::after {
  content: '→';
  transition: var(--transition);
}

.card-link:hover {
  gap: 12px;
  color: var(--mint);
}

/* 特性块 */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.feature-image {
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  position: relative;
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
}

.feature-text {
  padding: 12px 0;
}

.feature-list {
  list-style: none;
  margin-top: 24px;
}

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  color: var(--gray-700);
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: var(--mint);
  background: var(--coral-light);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
}

/* 数据条 */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  text-align: center;
}

.stat-item {
  padding: 32px 20px;
  border-radius: 18px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
  position: relative;
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(232, 122, 93, 0.1);
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--coral-dark);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.95rem;
  opacity: 0.65;
  margin-top: 8px;
  color: var(--gray-700);
  font-weight: 500;
}

/* 内容墙 */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.content-wall-item {
  border-radius: 18px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(232, 122, 93, 0.12);
}

.content-wall-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: var(--transition);
}

.content-wall-item:hover img {
  transform: scale(1.05);
}

.content-wall-body {
  padding: 24px 22px 26px;
}

.content-wall-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.content-wall-body p {
  color: var(--gray-700);
  opacity: 0.7;
  font-size: 0.9rem;
  line-height: 1.6;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: var(--white);
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--coral-light);
  box-shadow: 0 2px 12px rgba(232, 122, 93, 0.06);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  color: var(--gray-900);
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--coral);
  transition: var(--transition);
}

.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(0deg);
}

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  opacity: 0.75;
  color: var(--gray-700);
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* CTA横幅 */
.cta-banner {
  padding: 64px 24px;
  text-align: center;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--coral), var(--mint));
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: rgba(255,255,255,0.06);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
  position: relative;
}

.cta-banner p {
  color: rgba(255,255,255,0.85);
  max-width: 500px;
  margin: 0 auto 28px;
  font-size: 1.05rem;
  position: relative;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--coral-dark);
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.cta-banner .btn-primary:hover {
  background: var(--coral-light);
  color: var(--coral-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.15);
}

/* 页脚 */
.site-footer {
  padding: 64px 0 28px;
  background: var(--gray-100);
  border-top: 1px solid var(--gray-200);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand p {
  opacity: 0.6;
  margin-top: 12px;
  line-height: 1.7;
  font-size: 0.9rem;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--gray-900);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  text-decoration: none;
  color: var(--gray-700);
  font-size: 0.9rem;
  opacity: 0.7;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  opacity: 1;
  color: var(--coral-dark);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--gray-200);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--gray-700);
  opacity: 0.6;
}

/* 工具类 */
.text-accent {
  color: var(--coral-dark);
}

.text-center {
  text-align: center;
}

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  color: var(--gray-700);
  line-height: 1.7;
}

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ⚠️ 响应式 */
@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(255, 250, 247, 0.98);
    backdrop-filter: blur(16px);
    padding: 24px 28px;
    gap: 16px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.06);
    border-bottom: 1px solid var(--gray-200);
  }

  .main-nav.open li {
    width: 100%;
  }

  .main-nav.open a {
    display: block;
    padding: 10px 0;
    border-bottom: 1px solid var(--gray-200);
  }

  .main-nav.open .nav-cta {
    border-bottom: none;
    text-align: center;
    margin-top: 8px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .cta-banner h2 {
    font-size: 1.6rem;
  }

  .stat-number {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }

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

  .hero-buttons {
    flex-direction: column;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .section {
    padding: 60px 0;
  }

  .stats-bar {
    gap: 16px;
  }

  .stat-item {
    padding: 24px 16px;
  }
}