/* ============================================
   超凡国际 · 超凡视野 · 连接全球
   设计风格：极简白 + 渐变流体 + 柔光微透
   配色：米白背景 + 珊瑚粉橘 + 深海蓝绿点缀
   ============================================ */

/* 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: #fefcf7; /* 暖米白基底 */
  color: #2c3e4f;
  line-height: 1.6;
}

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

.section { padding: 80px 0; }

.section:nth-child(even) {
  background: linear-gradient(135deg, #f8f4ed 0%, #fefcf7 100%);
}

/* 导航 — 固定顶部，柔光玻璃 */
.site-header {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(254, 252, 247, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 190, 160, 0.25);
  box-shadow: 0 2px 24px rgba(255, 140, 100, 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: 1.25rem;
  text-decoration: none;
  color: #2c3e4f;
  letter-spacing: 0.5px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: linear-gradient(145deg, #ff9a7a, #ff7f5e);
  color: #fff;
  box-shadow: 0 4px 12px rgba(255, 127, 94, 0.3);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  color: #4a5b6a;
  transition: all 0.25s ease;
  position: relative;
  letter-spacing: 0.3px;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #ff9a7a, #ff7f5e);
  transition: width 0.3s ease;
  border-radius: 2px;
}

.main-nav a:hover { color: #ff7f5e; }
.main-nav a:hover::after { width: 100%; }

.nav-cta {
  padding: 10px 24px;
  border-radius: 40px;
  background: linear-gradient(145deg, #ff9a7a, #ff7f5e);
  color: #fff !important;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(255, 127, 94, 0.25);
  transition: all 0.3s ease;
}

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

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(255, 127, 94, 0.35);
  color: #fff !important;
}

.menu-toggle { display: none; }

/* 首页Hero — 流体渐变 + 柔和视觉 */
.hero {
  min-height: 78vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(160deg, #fefcf7 0%, #fcf3ec 40%, #fefcf7 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 154, 122, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -5%;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(100, 200, 210, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

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

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 40px;
  margin-bottom: 18px;
  background: linear-gradient(145deg, #ff9a7a22, #ff7f5e22);
  color: #ff7f5e;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border: 1px solid rgba(255, 127, 94, 0.2);
}

.hero h1 {
  font-size: 3.2rem;
  line-height: 1.18;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #1e2d3a;
}

.hero h1 span {
  background: linear-gradient(135deg, #ff7f5e, #ff9a7a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.65;
  max-width: 540px;
  margin-bottom: 36px;
  color: #4a5b6a;
  line-height: 1.7;
}

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

.hero-image {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(255, 127, 94, 0.12);
  position: relative;
}

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

/* 按钮系统 — 圆润柔和 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 40px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  font-size: 0.95rem;
  letter-spacing: 0.3px;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(145deg, #ff9a7a, #ff7f5e);
  box-shadow: 0 4px 16px rgba(255, 127, 94, 0.25);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(255, 127, 94, 0.35);
}

.btn-outline {
  background: transparent;
  border: 2px solid #ff9a7a;
  color: #ff7f5e;
}

.btn-outline:hover {
  background: linear-gradient(145deg, #ff9a7a15, #ff7f5e15);
  border-color: #ff7f5e;
  transform: translateY(-2px);
}

/* 标签/标题 — 清爽细腻 */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 14px;
  color: #ff7f5e;
  text-transform: uppercase;
  position: relative;
  padding-left: 36px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, #ff9a7a, #ff7f5e);
  border-radius: 2px;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 16px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: #1e2d3a;
}

.section-desc {
  max-width: 600px;
  opacity: 0.6;
  margin-bottom: 44px;
  color: #4a5b6a;
  font-size: 1.05rem;
}

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

.category-card {
  border-radius: 20px;
  padding: 32px 28px;
  background: #fff;
  border: 1px solid rgba(255, 190, 160, 0.2);
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  box-shadow: 0 4px 20px rgba(255, 140, 100, 0.04);
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(255, 127, 94, 0.12);
  border-color: rgba(255, 127, 94, 0.2);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
  background: linear-gradient(145deg, #fff5f0, #ffe8e0);
  color: #ff7f5e;
}

.card-link {
  font-weight: 600;
  font-size: 0.88rem;
  text-decoration: none;
  color: #ff7f5e;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s ease;
}

.card-link:hover { gap: 12px; }

/* 特性块 — 左右流体布局 */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.feature-image {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(255, 127, 94, 0.08);
}

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

.feature-text { }

.feature-list {
  list-style: none;
  margin-top: 8px;
}

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  color: #2c3e4f;
}

.feature-list li::before {
  content: '✦';
  font-weight: 700;
  color: #ff9a7a;
  font-size: 1.1rem;
}

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

.stat-item {
  padding: 32px 20px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid rgba(255, 190, 160, 0.15);
  box-shadow: 0 4px 20px rgba(255, 140, 100, 0.04);
  transition: all 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(255, 127, 94, 0.1);
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, #ff7f5e, #ff9a7a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.92rem;
  opacity: 0.55;
  margin-top: 8px;
  color: #4a5b6a;
}

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

.content-wall-item {
  border-radius: 20px;
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(255, 190, 160, 0.15);
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  box-shadow: 0 4px 20px rgba(255, 140, 100, 0.04);
}

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(255, 127, 94, 0.12);
  border-color: rgba(255, 127, 94, 0.2);
}

.content-wall-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.content-wall-item:hover img { transform: scale(1.03); }

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

/* FAQ — 极简手风琴 */
.faq-list { max-width: 800px; margin: 0 auto; }

.faq-item {
  border: 1px solid rgba(255, 190, 160, 0.2);
  border-radius: 16px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(255, 127, 94, 0.3);
  box-shadow: 0 4px 16px rgba(255, 127, 94, 0.06);
}

.faq-item .faq-question {
  padding: 18px 24px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #1e2d3a;
  font-size: 1.02rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: #ff9a7a;
  transition: transform 0.3s ease;
  font-weight: 300;
}

.faq-item.open .faq-question::after { content: '−'; }

.faq-item .faq-answer {
  padding: 0 24px 18px;
  display: none;
  opacity: 0.65;
  color: #4a5b6a;
  line-height: 1.7;
}

.faq-item.open .faq-answer { display: block; }

/* CTA横幅 — 温暖渐变 */
.cta-banner {
  padding: 64px 24px;
  text-align: center;
  border-radius: 24px;
  background: linear-gradient(145deg, #ff7f5e, #ff9a7a);
  color: #fff;
  box-shadow: 0 20px 60px rgba(255, 127, 94, 0.2);
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  margin-bottom: 12px;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #ff7f5e;
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

.cta-banner .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.1);
}

/* 页脚 — 浅色优雅 */
.site-footer {
  padding: 60px 0 32px;
  background: #f8f4ed;
  border-top: 1px solid rgba(255, 190, 160, 0.15);
}

.site-footer .container { }

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

.footer-brand { }

.footer-col { }

.footer-col h4 {
  font-weight: 600;
  margin-bottom: 16px;
  color: #1e2d3a;
  font-size: 1rem;
}

.footer-col a {
  display: block;
  color: #4a5b6a;
  text-decoration: none;
  padding: 4px 0;
  font-size: 0.9rem;
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.footer-col a:hover { opacity: 1; color: #ff7f5e; }

.footer-bottom {
  border-top: 1px solid rgba(255, 190, 160, 0.2);
  margin-top: 44px;
  padding-top: 22px;
  text-align: center;
  font-size: 0.85rem;
  color: #4a5b6a;
  opacity: 0.6;
}

/* 工具类 */
.text-accent { color: #ff7f5e; }
.text-center { text-align: center; }

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.6;
  color: #4a5b6a;
}

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

/* ⚠️ 响应式 — 细腻适配 */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.2rem; }
  .feature-block { grid-template-columns: 1fr; gap: 40px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .main-nav { display: none; }
  .menu-toggle {
    display: flex;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    color: #2c3e4f;
    font-size: 1.5rem;
  }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(254, 252, 247, 0.98);
    backdrop-filter: blur(12px);
    padding: 24px 20px;
    gap: 18px;
    border-bottom: 1px solid rgba(255, 190, 160, 0.2);
    box-shadow: 0 8px 32px rgba(0,0,0,0.04);
  }
  .section-title { font-size: 1.7rem; }
}

@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; gap: 12px; }
  .hero h1 { font-size: 1.8rem; }
  .hero { min-height: 60vh; }
  .stat-number { font-size: 2rem; }
  .cta-banner { padding: 40px 20px; }
}