/* ============================================
   东升国际下载 — 新自然主义温暖风设计系统
   配色：奶油白 + 鼠尾草绿 + 珊瑚粉 + 暖棕
   ============================================ */

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

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  overflow-x: hidden;
  background: #fdfaf5;
  color: #4a3d33;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 柔和光晕背景装饰 */
body::before {
  content: '';
  position: fixed;
  top: -180px;
  right: -120px;
  width: 620px;
  height: 620px;
  background: radial-gradient(circle, rgba(232, 147, 124, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  bottom: -200px;
  left: -160px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(107, 143, 113, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

/* 核心布局 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

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

.section:nth-child(even) {
  background: #f3f6f2;
  position: relative;
}

.section:nth-child(even)::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 70%;
  height: 1px;
  background: linear-gradient(90deg, transparent, #d5e0d3, transparent);
  opacity: 0.6;
}

/* 导航 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(253, 250, 245, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid #e8e0d5;
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 2px 24px rgba(74, 61, 51, 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: 700;
  font-size: 1.2rem;
  text-decoration: none;
  color: #3a2f28;
  letter-spacing: -0.01em;
  transition: opacity 0.2s;
}

.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, #e8927c, #e07b6c);
  color: #fff;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(224, 123, 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: #5c4f45;
  transition: color 0.2s, transform 0.2s;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #e07b6c;
  border-radius: 2px;
  transition: width 0.25s ease;
}

.main-nav a:hover {
  color: #3a2f28;
}

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

.nav-cta {
  padding: 9px 22px;
  border-radius: 25px;
  color: #fff !important;
  font-weight: 600;
  background: linear-gradient(135deg, #6b8f71, #5a7d60);
  box-shadow: 0 3px 12px rgba(107, 143, 113, 0.25);
  transition: all 0.3s ease !important;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(107, 143, 113, 0.35);
}

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: #3a2f28;
  transition: background 0.2s;
}

.menu-toggle:hover {
  background: #f0ebe2;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #3a2f28;
  border-radius: 2px;
  position: relative;
  transition: all 0.3s;
}

.menu-toggle span::before,
.menu-toggle span::after {
  content: '';
  position: absolute;
  width: 22px;
  height: 2px;
  background: #3a2f28;
  border-radius: 2px;
  transition: all 0.3s;
}

.menu-toggle span::before {
  top: -7px;
}

.menu-toggle span::after {
  top: 7px;
}

.menu-toggle.active span {
  background: transparent;
}

.menu-toggle.active span::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-toggle.active span::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Hero */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 68px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  right: -8%;
  width: 500px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(232, 147, 124, 0.07) 0%, transparent 70%);
  border-radius: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 16px;
  background: #fce8e4;
  color: #d4705e;
  letter-spacing: 0.03em;
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.15;
  margin-bottom: 20px;
  color: #2d241e;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero h1 span {
  color: #6b8f71;
  position: relative;
}

.hero h1 span::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 100%;
  height: 8px;
  background: rgba(107, 143, 113, 0.18);
  border-radius: 4px;
  z-index: -1;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.7;
  max-width: 560px;
  margin-bottom: 32px;
  color: #5c4f45;
  line-height: 1.7;
}

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

.hero-image {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(74, 61, 51, 0.08);
  background: #faf6f0;
  border: 1px solid #ebe3d8;
}

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

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 25px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s ease;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #6b8f71, #5a7d60);
  box-shadow: 0 4px 14px rgba(107, 143, 113, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(107, 143, 113, 0.4);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid #6b8f71;
  color: #6b8f71;
}

.btn-outline:hover {
  background: #6b8f71;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(107, 143, 113, 0.25);
}

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 12px;
  color: #d4705e;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 14px;
  color: #2d241e;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 40px;
  color: #5c4f45;
  line-height: 1.7;
}

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

.category-card {
  border-radius: 14px;
  padding: 30px;
  border: 1px solid #ebe3d8;
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  background: #fffdfa;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #6b8f71, #e07b6c);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(74, 61, 51, 0.08);
  border-color: #d5ccc0;
}

.category-card:hover::before {
  transform: scaleX(1);
}

.card-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.3rem;
  background: #f0f5ef;
  color: #6b8f71;
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: #e07b6c;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.25s;
}

.card-link::after {
  content: '→';
  transition: transform 0.25s;
}

.card-link:hover {
  gap: 8px;
}

.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: 16px;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(74, 61, 51, 0.07);
  border: 1px solid #ebe3d8;
  background: #faf6f0;
}

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

.feature-text {
  color: #4a3d33;
}

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

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #4a3d33;
  font-size: 0.95rem;
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: #6b8f71;
  font-size: 1.1rem;
  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: 14px;
  border: 1px solid #ebe3d8;
  background: #fffdfa;
  transition: all 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(74, 61, 51, 0.06);
  border-color: #d5ccc0;
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  color: #e07b6c;
  letter-spacing: -0.02em;
  line-height: 1;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 8px;
  color: #5c4f45;
  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: 14px;
  overflow: hidden;
  border: 1px solid #ebe3d8;
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  background: #fffdfa;
}

.content-wall-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(74, 61, 51, 0.08);
  border-color: #d5ccc0;
}

.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(1.04);
}

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

.content-wall-body h3 {
  color: #2d241e;
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.content-wall-body p {
  color: #5c4f45;
  opacity: 0.7;
  font-size: 0.9rem;
  line-height: 1.5;
}

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

.faq-item {
  border: 1px solid #ebe3d8;
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: #fffdfa;
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: #d5ccc0;
  box-shadow: 0 2px 8px rgba(74, 61, 51, 0.04);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #2d241e;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 400;
  color: #6b8f71;
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 12px;
}

.faq-item.open .faq-question {
  color: #6b8f71;
}

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

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  opacity: 0.7;
  color: #5c4f45;
  line-height: 1.7;
  font-size: 0.9rem;
}

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

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 0.7;
    transform: translateY(0);
  }
}

/* CTA横幅 */
.cta-banner {
  padding: 60px 24px;
  text-align: center;
  border-radius: 16px;
  color: #fff;
  background: linear-gradient(135deg, #6b8f71 0%, #5a7d60 30%, #4a6d50 100%);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -40px;
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -30px;
  width: 260px;
  height: 260px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.85);
  position: relative;
  z-index: 1;
  margin-top: 8px;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #5a7d60;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  background: #fdfaf5;
  color: #4a6d50;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
}

/* 页脚 */
.site-footer {
  padding: 56px 0 28px;
  background: #ede6dc;
  color: #4a3d33;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, #d5ccc0, transparent);
}

.site-footer .container {
  position: relative;
  z-index: 1;
}

.site-footer a {
  color: #5c4f45;
  text-decoration: none;
  transition: color 0.2s;
}

.site-footer a:hover {
  color: #e07b6c;
}

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

.footer-brand {
  color: #3a2f28;
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-brand p {
  opacity: 0.65;
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-col h4 {
  font-weight: 600;
  margin-bottom: 14px;
  color: #3a2f28;
  font-size: 0.95rem;
}

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

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

.footer-col ul li a {
  font-size: 0.9rem;
  opacity: 0.7;
}

.footer-col ul li a:hover {
  opacity: 1;
  color: #e07b6c;
}

.footer-bottom {
  border-top: 1px solid #dcd3c6;
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: #8a7d72;
}

/* 工具类 */
.text-accent {
  color: #e07b6c;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  color: #5c4f45;
  line-height: 1.7;
}

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

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

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 2.4rem;
  }

  .feature-block {
    gap: 36px;
  }

  .footer-grid {
    gap: 28px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }

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

  .feature-image {
    order: -1;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

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

  .hero h1 {
    font-size: 2rem;
  }

  .hero {
    min-height: 55vh;
  }

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

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
  }

  .menu-toggle span,
  .menu-toggle span::before,
  .menu-toggle span::after {
    display: block;
    width: 22px;
    height: 2px;
    background: #3a2f28;
    border-radius: 2px;
    transition: all 0.3s;
  }

  .menu-toggle span {
    position: relative;
  }

  .menu-toggle span::before {
    content: '';
    position: absolute;
    top: -7px;
    left: 0;
  }

  .menu-toggle span::after {
    content: '';
    position: absolute;
    top: 7px;
    left: 0;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: #fdfaf5;
    padding: 24px;
    border-bottom: 1px solid #e8e0d5;
    box-shadow: 0 8px 24px rgba(74, 61, 51, 0.06);
    gap: 16px;
    z-index: 999;
  }

  .main-nav.open a {
    font-size: 1rem;
    padding: 8px 0;
  }

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

  .cta-banner {
    padding: 40px 20px;
    border-radius: 12px;
  }

  .cta-banner h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

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

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

  .hero-buttons {
    flex-direction: column;
    gap: 12px;
  }

  .hero h1 {
    font-size: 1.7rem;
  }

  .hero p {
    font-size: 0.95rem;
  }

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

  .btn {
    justify-content: center;
    padding: 12px 24px;
    font-size: 0.9rem;
  }

  .category-card {
    padding: 22px;
  }

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

  .site-header .header-inner {
    padding: 0 16px;
  }

  .hero-image {
    border-radius: 10px;
  }
}

/* 辅助动画 */
@keyframes subtleFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

.category-card:nth-child(3n+1):hover {
  animation: subtleFloat 2s ease-in-out infinite;
}

.category-card:nth-child(3n+2):hover {
  animation: subtleFloat 2.2s ease-in-out 0.3s infinite;
}

.category-card:nth-child(3n+3):hover {
  animation: subtleFloat 2.4s ease-in-out 0.6s infinite;
}