/* ============================================
   利澳国际平台 — 完整CSS设计系统
   配色：暖珊瑚 × 翡翠绿 × 奶油米白
   风格：托斯卡纳暖调融合现代有机设计
   ============================================ */

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

:root {
  --coral: #E8616C;
  --coral-dark: #C94D57;
  --coral-light: #FDE8EA;
  --teal: #2D8B7B;
  --teal-dark: #1F6B5E;
  --teal-light: #E1F4EF;
  --amber: #D4953E;
  --amber-light: #FDF3E4;
  --cream: #FDF8F4;
  --cream-warm: #F7F0E8;
  --surface: #FFFFFF;
  --text-main: #3D3535;
  --text-soft: #7A6E6A;
  --text-muted: #A69992;
  --border-soft: #E8DED6;
  --border-warm: #F0E5DA;
  --shadow-sm: 0 1px 3px rgba(61, 53, 53, 0.06);
  --shadow-md: 0 6px 24px rgba(61, 53, 53, 0.09);
  --shadow-lg: 0 14px 40px rgba(61, 53, 53, 0.12);
  --shadow-glow: 0 0 0 8px rgba(232, 97, 108, 0.08);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: var(--cream);
  color: var(--text-main);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

.section {
  padding: 80px 0;
  position: relative;
}

.section:nth-child(even) {
  background: var(--cream-warm);
}

/* 偶数section添加微妙的纹理感 */
.section:nth-child(even)::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(232, 97, 108, 0.03) 0%, transparent 55%),
    radial-gradient(ellipse at 75% 30%, rgba(45, 139, 123, 0.03) 0%, transparent 55%);
  pointer-events: none;
  z-index: 0;
}

.section:nth-child(even) > * {
  position: relative;
  z-index: 1;
}

/* === 导航 — 固定顶部 === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(253, 248, 244, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-soft);
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.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: 700;
  font-size: 1.2rem;
  text-decoration: none;
  color: var(--text-main);
  letter-spacing: -0.01em;
  transition: opacity var(--transition);
}

.logo:hover {
  opacity: 0.8;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: linear-gradient(135deg, var(--coral), var(--amber));
  color: #fff;
  font-weight: 800;
  box-shadow: 0 2px 8px rgba(232, 97, 108, 0.25);
}

.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(--text-main);
  transition: color var(--transition);
  position: relative;
  letter-spacing: 0.01em;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--coral);
  border-radius: 1px;
  transition: width var(--transition);
}

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

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

.nav-cta {
  padding: 9px 22px;
  border-radius: 25px;
  color: #fff !important;
  font-weight: 600;
  background: var(--teal);
  letter-spacing: 0.02em;
  box-shadow: 0 3px 12px rgba(45, 139, 123, 0.25);
  transition: all var(--transition);
}

.nav-cta:hover {
  background: var(--teal-dark);
  box-shadow: 0 5px 18px rgba(45, 139, 123, 0.35);
  transform: translateY(-1px);
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  width: 28px;
  height: 22px;
  justify-content: center;
  background: none;
  border: none;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: var(--transition);
}

/* === 首页Hero === */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  background:
    radial-gradient(ellipse at 65% 35%, rgba(232, 97, 108, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 30% 70%, rgba(45, 139, 123, 0.05) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 80%, rgba(212, 149, 62, 0.04) 0%, transparent 50%);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  border: 1px solid rgba(232, 97, 108, 0.08);
  top: -180px;
  right: -120px;
  pointer-events: none;
}

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

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: 25px;
  margin-bottom: 18px;
  background: var(--coral-light);
  color: var(--coral-dark);
  letter-spacing: 0.04em;
}

.hero h1 {
  font-size: 2.8rem;
  line-height: 1.18;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.hero h1 .highlight {
  color: var(--coral);
  position: relative;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.7;
  max-width: 560px;
  margin-bottom: 32px;
  color: var(--text-soft);
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-warm);
  transition: transform var(--transition);
}

.hero-image:hover {
  transform: translateY(-4px);
}

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

/* === 按钮 === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 25px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all var(--transition);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.15);
  opacity: 0;
  transition: opacity var(--transition);
  border-radius: inherit;
}

.btn:hover::before {
  opacity: 1;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  color: #fff;
  background: var(--coral);
  box-shadow: 0 4px 16px rgba(232, 97, 108, 0.3);
}

.btn-primary:hover {
  background: var(--coral-dark);
  box-shadow: 0 7px 24px rgba(232, 97, 108, 0.4);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border: 1.8px solid var(--coral);
  color: var(--coral);
}

.btn-outline:hover {
  background: var(--coral-light);
  border-color: var(--coral-dark);
  color: var(--coral-dark);
  transform: translateY(-2px);
}

/* === 标签/标题 === */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 3px;
  margin-bottom: 14px;
  color: var(--teal);
  text-transform: uppercase;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 14px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 40px;
  color: var(--text-soft);
  line-height: 1.7;
  font-size: 1.05rem;
}

/* === 卡片网格 === */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.category-card {
  border-radius: var(--radius-md);
  padding: 30px 26px;
  border: 1px solid var(--border-warm);
  transition: all var(--transition);
  background: var(--surface);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.category-card::after {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(232, 97, 108, 0.04);
  transition: all var(--transition);
  pointer-events: none;
}

.category-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.category-card:hover::after {
  width: 160px;
  height: 160px;
  top: -60px;
  right: -60px;
  background: rgba(232, 97, 108, 0.07);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.3rem;
  background: var(--teal-light);
  color: var(--teal);
  position: relative;
  z-index: 1;
}

.category-card:nth-child(2n) .card-icon {
  background: var(--coral-light);
  color: var(--coral);
}

.category-card:nth-child(3n) .card-icon {
  background: var(--amber-light);
  color: var(--amber);
}

.category-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
  position: relative;
  z-index: 1;
}

.category-card p {
  font-size: 0.9rem;
  color: var(--text-soft);
  margin-bottom: 16px;
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--coral);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
  position: relative;
  z-index: 1;
}

.card-link:hover {
  gap: 10px;
}

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

.card-link:hover::after {
  transform: translateX(3px);
}

/* === 特性块 === */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.feature-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-warm);
  transition: transform var(--transition);
}

.feature-image:hover {
  transform: scale(1.02);
}

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

.feature-text h3 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.feature-text p {
  color: var(--text-soft);
  margin-bottom: 20px;
  line-height: 1.7;
}

.feature-list {
  list-style: none;
}

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
  font-weight: 500;
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: #fff;
  background: var(--teal);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
}

/* === 数据条 === */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 28px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-warm);
  background: var(--surface);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-item::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: var(--coral);
  border-radius: 2px;
  transition: width var(--transition);
}

.stat-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.stat-item:hover::before {
  width: 60%;
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--coral);
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 6px;
  color: var(--text-soft);
  font-weight: 500;
}

/* === 内容墙 === */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.content-wall-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-warm);
  transition: all var(--transition);
  background: var(--surface);
}

.content-wall-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.content-wall-item:hover img {
  transform: scale(1.06);
}

.content-wall-body {
  padding: 20px;
}

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-main);
}

.content-wall-body p {
  font-size: 0.88rem;
  color: var(--text-soft);
  line-height: 1.6;
}

.content-wall-body .card-link {
  margin-top: 10px;
}

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

.faq-item {
  border: 1px solid var(--border-warm);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: var(--surface);
  transition: all var(--transition);
}

.faq-item:hover {
  border-color: var(--coral);
  box-shadow: var(--shadow-sm);
}

.faq-item .faq-question {
  padding: 16px 20px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-main);
  user-select: none;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--coral);
  transition: transform var(--transition);
}

.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-item .faq-answer {
  padding: 0 20px 16px;
  display: none;
  opacity: 0.7;
  color: var(--text-soft);
  line-height: 1.7;
}

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

.faq-item.open {
  border-color: var(--coral);
  box-shadow: var(--shadow-glow);
  background: #FFFBF9;
}

@keyframes fadeSlideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 0.7;
    transform: translateY(0);
  }
}

/* === CTA横幅 === */
.cta-banner {
  padding: 56px 24px;
  text-align: center;
  border-radius: var(--radius-xl);
  color: #fff;
  background: linear-gradient(135deg, var(--coral) 0%, #D95662 30%, #C94D57 60%, var(--amber) 100%);
  position: relative;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(232, 97, 108, 0.3);
}

.cta-banner::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  top: -80px;
  right: -60px;
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  bottom: -50px;
  left: -40px;
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
  letter-spacing: -0.01em;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
  font-size: 1.05rem;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--coral);
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  background: #FFF5F5;
  box-shadow: 0 7px 24px rgba(0, 0, 0, 0.2);
}

/* === 页脚 === */
.site-footer {
  padding: 56px 0 28px;
  background: #F5EDE5;
  color: var(--text-main);
  border-top: 1px solid var(--border-soft);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand .logo {
  margin-bottom: 14px;
}

.footer-brand p {
  color: var(--text-soft);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  font-weight: 700;
  margin-bottom: 16px;
  font-size: 1rem;
  color: var(--text-main);
}

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

.footer-col ul li {
  margin-bottom: 8px;
}

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

.footer-col ul li a:hover {
  color: var(--coral);
}

.footer-bottom {
  border-top: 1px solid rgba(61, 53, 53, 0.08);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  color: var(--text-soft);
  line-height: 1.7;
  font-size: 0.95rem;
}

.mt-0 {
  margin-top: 0 !important;
}

.mb-0 {
  margin-bottom: 0 !important;
}

/* === 响应式 === */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 2.2rem;
  }

  .section-title {
    font-size: 1.7rem;
  }

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

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

  .feature-block {
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: 100px 0 60px;
  }

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

  .hero p {
    font-size: 1rem;
  }

  .section {
    padding: 52px 0;
  }

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

  .feature-block.reverse-mobile .feature-image {
    order: -1;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .stat-number {
    font-size: 1.8rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .main-nav {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(253, 248, 244, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 20px 24px;
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--border-soft);
    box-shadow: var(--shadow-lg);
    z-index: 999;
  }

  .main-nav.open {
    display: flex;
  }

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

  .main-nav a {
    display: block;
    padding: 14px 8px;
    font-size: 1rem;
    border-bottom: 1px solid var(--border-warm);
  }

  .main-nav a::after {
    display: none;
  }

  .main-nav .nav-cta {
    text-align: center;
    margin-top: 8px;
    border-radius: 25px;
  }

  .menu-toggle {
    display: flex;
  }

  .content-wall {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .cta-banner {
    padding: 40px 20px;
    border-radius: var(--radius-lg);
  }

  .cta-banner h2 {
    font-size: 1.4rem;
  }
}

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }

  .hero h1 {
    font-size: 1.6rem;
  }

  .section-title {
    font-size: 1.4rem;
  }

  .btn {
    padding: 12px 22px;
    font-size: 0.9rem;
  }

  .category-card {
    padding: 22px 18px;
  }

  .stat-item {
    padding: 20px 14px;
  }

  .stat-number {
    font-size: 1.6rem;
  }

  .feature-block {
    gap: 24px;
  }

  .faq-item .faq-question {
    font-size: 0.9rem;
    padding: 14px 16px;
  }
}

/* === 可选：平滑滚动与选中样式 === */
html {
  scroll-behavior: smooth;
}

::selection {
  background: var(--coral-light);
  color: var(--coral-dark);
}

::moz-selection {
  background: var(--coral-light);
  color: var(--coral-dark);
}

/* === 图片占位与加载 === */
img {
  max-width: 100%;
  height: auto;
}

img[loading="lazy"] {
  background: var(--cream-warm);
}

/* === 焦点可见性 === */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 3px;
  border-radius: 4px;
}

/* === 打印样式 === */
@media print {
  .site-header,
  .cta-banner,
  .site-footer {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  .section {
    padding: 20px 0;
  }
}