/* =========================================
   AWWWARDS获奖设计 · 亿万28 · 聚变无限
   视觉概念：能量聚变 · 光之折跃
   配色：能量橙 + 星云紫 + 极光绿
   风格：大胆·有机·未来感
   ========================================= */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  overflow-x: hidden;
  background: #FFFAF6;
  color: #2D1B4E;
  line-height: 1.6;
}

/* 自定义选择颜色 */
::selection {
  background: #FF6B35;
  color: #fff;
}

/* 滚动条 */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #F7F2FF;
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, #FF6B35, #6C3FB8);
  border-radius: 99px;
}

/* =========================================
   核心布局
   ========================================= */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

.section {
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.section:nth-child(even) {
  background: #F7F2FF;
}

/* 装饰性背景光晕 */
.section::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.08;
  pointer-events: none;
  z-index: 1;
}

.section:nth-child(odd)::before {
  background: #FF6B35;
  top: -200px;
  right: -200px;
}

.section:nth-child(even)::before {
  background: #6C3FB8;
  bottom: -200px;
  left: -200px;
}

/* =========================================
   导航 — 固定顶部 · 玻璃态
   ========================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 250, 246, 0.85);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border-bottom: 1px solid rgba(108, 63, 184, 0.08);
  transition: 0.3s ease;
}

.site-header.scrolled {
  background: rgba(255, 250, 246, 0.95);
  box-shadow: 0 4px 40px rgba(108, 63, 184, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.3rem;
  text-decoration: none;
  color: #2D1B4E;
  letter-spacing: -0.5px;
  position: relative;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: linear-gradient(135deg, #FF6B35, #6C3FB8);
  color: #fff;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(255, 107, 53, 0.25);
  position: relative;
  overflow: hidden;
}

.logo-icon::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.2) 60%, transparent 80%);
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% { transform: translateX(-100%); }
  50% { transform: translateX(100%); }
}

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

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: #5A4A7A;
  transition: 0.25s ease;
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #FF6B35, #6C3FB8);
  transition: 0.3s ease;
  border-radius: 99px;
}

.main-nav a:hover {
  color: #FF6B35;
}

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

.nav-cta {
  padding: 10px 24px !important;
  border-radius: 99px !important;
  color: #fff !important;
  font-weight: 600 !important;
  background: linear-gradient(135deg, #FF6B35, #E8552A);
  box-shadow: 0 4px 20px rgba(255, 107, 53, 0.3);
  transition: 0.3s ease !important;
  border: none !important;
}

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

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(255, 107, 53, 0.4) !important;
  color: #fff !important;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 6px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: #2D1B4E;
  border-radius: 99px;
  transition: 0.3s ease;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* =========================================
   首页Hero — 能量聚变视觉
   ========================================= */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, #FFFAF6 0%, #F7F2FF 50%, #FFF5F0 100%);
  padding-top: 72px;
}

.hero::before {
  content: '';
  position: absolute;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(255,107,53,0.08) 0%, transparent 70%);
  top: -200px;
  right: -200px;
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(108,63,184,0.06) 0%, transparent 70%);
  bottom: -150px;
  left: -150px;
  border-radius: 50%;
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  max-width: 620px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 99px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(255,107,53,0.12), rgba(108,63,184,0.12));
  color: #6C3FB8;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border: 1px solid rgba(108,63,184,0.1);
}

.hero h1 {
  font-size: 3.4rem;
  line-height: 1.1;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -1.5px;
  color: #2D1B4E;
  background: linear-gradient(135deg, #2D1B4E 30%, #FF6B35 70%, #6C3FB8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero h1 span {
  display: block;
  -webkit-text-fill-color: #2D1B4E;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.7;
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.7;
  color: #5A4A7A;
}

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

.hero-image {
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 20px 80px rgba(108, 63, 184, 0.12);
  background: linear-gradient(135deg, #F7F2FF, #FFF5F0);
  border: 1px solid rgba(108,63,184,0.06);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image::before {
  content: '∞';
  font-size: 8rem;
  font-weight: 200;
  background: linear-gradient(135deg, #FF6B35, #6C3FB8, #00BFA5);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.3;
  animation: pulseInfinity 4s ease-in-out infinite;
}

@keyframes pulseInfinity {
  0%, 100% { transform: scale(1); opacity: 0.3; }
  50% { transform: scale(1.05); opacity: 0.5; }
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* =========================================
   按钮系统
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 99px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  font-size: 0.95rem;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #FF6B35, #E8552A);
  box-shadow: 0 6px 24px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 40px rgba(255, 107, 53, 0.4);
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.15) 60%, transparent 80%);
  transform: translateX(-100%);
  transition: 0.6s ease;
}

.btn-primary:hover::after {
  transform: translateX(100%);
}

.btn-outline {
  background: transparent;
  border: 2px solid #6C3FB8;
  color: #6C3FB8;
}

.btn-outline:hover {
  background: #6C3FB8;
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(108, 63, 184, 0.2);
}

/* =========================================
   标签/标题系统
   ========================================= */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 12px;
  text-transform: uppercase;
  background: linear-gradient(135deg, #FF6B35, #6C3FB8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.section-label::before {
  content: '✦ ';
  -webkit-text-fill-color: #FF6B35;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
  letter-spacing: -0.5px;
  color: #2D1B4E;
}

.section-desc {
  max-width: 600px;
  opacity: 0.65;
  margin-bottom: 48px;
  font-size: 1.05rem;
  line-height: 1.7;
  color: #5A4A7A;
}

/* =========================================
   卡片网格 — 有机悬浮
   ========================================= */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.category-card {
  border-radius: 20px;
  padding: 32px 28px;
  background: #fff;
  border: 1px solid rgba(108, 63, 184, 0.06);
  transition: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #FF6B35, #6C3FB8, #00BFA5);
  opacity: 0;
  transition: 0.4s ease;
}

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

.category-card:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 20px 60px rgba(108, 63, 184, 0.1);
  border-color: rgba(108, 63, 184, 0.12);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, rgba(255,107,53,0.1), rgba(108,63,184,0.1));
  color: #FF6B35;
  transition: 0.3s ease;
}

.category-card:hover .card-icon {
  background: linear-gradient(135deg, #FF6B35, #6C3FB8);
  color: #fff;
  transform: scale(1.05) rotate(-5deg);
}

.category-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #2D1B4E;
}

.category-card p {
  font-size: 0.9rem;
  opacity: 0.6;
  line-height: 1.6;
  margin-bottom: 16px;
  color: #5A4A7A;
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: #FF6B35;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: 0.2s ease;
}

.card-link:hover {
  gap: 12px;
  color: #6C3FB8;
}

.card-link::after {
  content: '→';
  transition: 0.2s ease;
}

.card-link:hover::after {
  transform: translateX(4px);
}

/* =========================================
   特性块 — 双列创意布局
   ========================================= */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.feature-block:nth-child(even) .feature-image {
  order: 2;
}

.feature-block:nth-child(even) .feature-text {
  order: 1;
}

.feature-image {
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(135deg, #F7F2FF, #FFF5F0);
  border: 1px solid rgba(108,63,184,0.06);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 48px rgba(108, 63, 184, 0.06);
}

.feature-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 50%, rgba(255,107,53,0.04));
  pointer-events: none;
}

.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-text h3 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: #2D1B4E;
}

.feature-text p {
  opacity: 0.65;
  line-height: 1.7;
  margin-bottom: 20px;
  color: #5A4A7A;
}

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

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: #2D1B4E;
}

.feature-list li::before {
  content: '✦';
  font-weight: 700;
  color: #FF6B35;
  font-size: 0.8rem;
}

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

.stat-item {
  padding: 32px 20px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid rgba(108, 63, 184, 0.06);
  transition: 0.3s ease;
  position: relative;
  overflow: hidden;
}

.stat-item::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, #FF6B35, #6C3FB8, transparent);
  transform: scaleX(0);
  transition: 0.4s ease;
}

.stat-item:hover::before {
  transform: scaleX(1);
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(108, 63, 184, 0.08);
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, #FF6B35, #6C3FB8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.55;
  margin-top: 6px;
  color: #5A4A7A;
  font-weight: 500;
}

/* =========================================
   内容墙 — 杂志风卡片
   ========================================= */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}

.content-wall-item {
  border-radius: 20px;
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(108, 63, 184, 0.06);
  transition: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.content-wall-item:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 20px 60px rgba(108, 63, 184, 0.1);
}

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

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

.content-wall-body {
  padding: 24px 24px 28px;
}

.content-wall-body .meta {
  font-size: 0.75rem;
  font-weight: 600;
  color: #FF6B35;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.content-wall-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #2D1B4E;
  line-height: 1.4;
}

.content-wall-body p {
  font-size: 0.9rem;
  opacity: 0.6;
  line-height: 1.6;
  color: #5A4A7A;
}

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

.faq-item {
  border: 1px solid rgba(108, 63, 184, 0.08);
  border-radius: 16px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  transition: 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(108, 63, 184, 0.15);
  box-shadow: 0 4px 20px rgba(108, 63, 184, 0.04);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #2D1B4E;
  font-size: 1rem;
  transition: 0.2s ease;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 300;
  color: #FF6B35;
  transition: 0.3s ease;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
  color: #6C3FB8;
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  opacity: 0.7;
  line-height: 1.7;
  color: #5A4A7A;
  font-size: 0.95rem;
}

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

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

/* =========================================
   CTA横幅 — 渐变能量带
   ========================================= */
.cta-banner {
  padding: 72px 40px;
  text-align: center;
  border-radius: 24px;
  color: #fff;
  background: linear-gradient(135deg, #FF6B35, #E8552A, #6C3FB8);
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 80px rgba(255, 107, 53, 0.2);
}

.cta-banner::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
  bottom: -80px;
  left: -80px;
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  z-index: 2;
}

.cta-banner p {
  color: rgba(255,255,255,0.8);
  max-width: 500px;
  margin: 0 auto 28px;
  font-size: 1.05rem;
  position: relative;
  z-index: 2;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #FF6B35;
  box-shadow: 0 6px 24px rgba(0,0,0,0.1);
  position: relative;
  z-index: 2;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}

/* =========================================
   页脚 — 深紫优雅
   ========================================= */
.site-footer {
  padding: 64px 0 28px;
  background: #2D1B4E;
  color: rgba(255,255,255,0.8);
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255,107,53,0.06) 0%, transparent 70%);
  top: -200px;
  left: -200px;
  border-radius: 50%;
  pointer-events: none;
}

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

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-brand .logo {
  color: #fff;
}

.footer-brand .logo-icon {
  background: linear-gradient(135deg, #FF6B35, #00BFA5);
}

.footer-brand p {
  opacity: 0.55;
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 1px;
  text-transform: uppercase;
  opacity: 0.9;
}

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

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

.footer-col ul a {
  text-decoration: none;
  color: rgba(255,255,255,0.55);
  font-size: 0.9rem;
  transition: 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-col ul a:hover {
  color: #FF6B35;
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.45;
  position: relative;
  z-index: 2;
}

/* =========================================
   工具类
   ========================================= */
.text-accent {
  color: #FF6B35;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.65;
  line-height: 1.7;
  color: #5A4A7A;
}

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

/* 附加装饰类 */
.gradient-text {
  background: linear-gradient(135deg, #FF6B35, #6C3FB8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass-card {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 分割线装饰 */
.divider-wave {
  width: 100%;
  height: 40px;
  position: relative;
  overflow: hidden;
}

.divider-wave::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  width: 200%;
  height: 2px;
  background: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 20px,
    rgba(108,63,184,0.1) 20px,
    rgba(108,63,184,0.1) 22px
  );
  transform: translateY(-50%);
}

/* =========================================
   ⚠️ 响应式设计
   ========================================= */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 2.8rem;
  }
  
  .hero .container {
    gap: 40px;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .site-header {
    height: 64px;
  }
  
  .header-inner {
    height: 64px;
  }
  
  .logo {
    font-size: 1.1rem;
  }
  
  .logo-icon {
    width: 34px;
    height: 34px;
    font-size: 1rem;
  }
  
  .main-nav {
    display: none;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    width: 100%;
    background: rgba(255, 250, 246, 0.98);
    backdrop-filter: blur(20px);
    padding: 24px 20px;
    gap: 16px;
    border-bottom: 1px solid rgba(108, 63, 184, 0.06);
    box-shadow: 0 20px 60px rgba(0,0,0,0.06);
    animation: navSlideIn 0.3s ease;
  }
  
  @keyframes navSlideIn {
    from {
      opacity: 0;
      transform: translateY(-10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  .hero {
    min-height: auto;
    padding: 100px 0 60px;
  }
  
  .hero .container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .hero-content {
    max-width: 100%;
    text-align: center;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .hero p {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .hero-image {
    max-width: 400px;
    margin: 0 auto;
    aspect-ratio: 4/3;
  }
  
  .feature-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .feature-block:nth-child(even) .feature-image {
    order: 0;
  }
  
  .feature-block:nth-child(even) .feature-text {
    order: 0;
  }
  
  .feature-text {
    text-align: center;
  }
  
  .feature-list {
    text-align: left;
    max-width: 400px;
    margin: 0 auto;
  }
  
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  
  .footer-brand {
    grid-column: 1 / -1;
  }
  
  .section {
    padding: 64px 0;
  }
  
  .hero-eyebrow {
    font-size: 0.7rem;
  }
  
  .section-title {
    font-size: 1.6rem;
  }
  
  .cta-banner {
    padding: 48px 24px;
    border-radius: 16px;
  }
  
  .cta-banner h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  
  .header-inner {
    padding: 0 16px;
  }
  
  .hero h1 {
    font-size: 1.8rem;
  }
  
  .hero p {
    font-size: 0.95rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
    padding: 12px 24px;
  }
  
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .section-title {
    font-size: 1.4rem;
  }
  
  .stat-item {
    padding: 20px 16px;
  }
  
  .stat-number {
    font-size: 1.8rem;
  }
  
  .category-card {
    padding: 24px 20px;
  }
  
  .content-wall-item img {
    height: 180px;
  }
  
  .cta-banner {
    padding: 36px 20px;
  }
  
  .cta-banner h2 {
    font-size: 1.3rem;
  }
  
  .faq-item .faq-question {
    padding: 16px 18px;
    font-size: 0.9rem;
  }
  
  .faq-item .faq-answer {
    padding: 0 18px 16px;
    font-size: 0.85rem;
  }
  
  .site-footer {
    padding: 40px 0 20px;
  }
  
  .hero-image {
    aspect-ratio: 3/2;
  }
  
  .hero-image::before {
    font-size: 5rem;
  }
}

/* 小屏设备导航优化 */
@media (max-width: 360px) {
  .header-inner {
    padding: 0 12px;
  }
  
  .logo {
    font-size: 0.95rem;
  }
  
  .logo-icon {
    width: 30px;
    height: 30px;
    font-size: 0.85rem;
  }
  
  .hero h1 {
    font-size: 1.5rem;
  }
}

/* =========================================
   悬浮动效补充
   ========================================= */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.floating {
  animation: float 6s ease-in-out infinite;
}

/* 卡片入场动画 */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.cards-grid > *,
.content-wall > *,
.feature-block {
  animation: fadeUp 0.6s ease forwards;
}

.cards-grid > *:nth-child(1) { animation-delay: 0.05s; }
.cards-grid > *:nth-child(2) { animation-delay: 0.1s; }
.cards-grid > *:nth-child(3) { animation-delay: 0.15s; }
.cards-grid > *:nth-child(4) { animation-delay: 0.2s; }

/* 统计数字动画脉冲 */
.stat-number {
  display: inline-block;
  animation: countPulse 2s ease-in-out infinite;
}

@keyframes countPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

/* 交互动效：链接下划线延伸 */
a {
  text-decoration: none;
  color: inherit;
}

/* 图片渐变遮罩 */
.fade-mask {
  -webkit-mask-image: linear-gradient(to bottom, black 60%, transparent 100%);
  mask-image: linear-gradient(to bottom, black 60%, transparent 100%);
}

/* 自定义圆点列表 */
.dot-list {
  list-style: none;
}

.dot-list li {
  padding: 6px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.dot-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: #FF6B35;
  border-radius: 50%;
  flex-shrink: 0;
}

/* 高级卡片悬浮光效 */
.glow-card {
  position: relative;
  isolation: isolate;
}

.glow-card::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, transparent, rgba(255,107,53,0.06), rgba(108,63,184,0.06), transparent);
  opacity: 0;
  transition: 0.4s ease;
  z-index: -1;
}

.glow-card:hover::after {
  opacity: 1;
}

/* 安全区域适配 */
@supports (padding-top: env(safe-area-inset-top)) {
  .site-header {
    padding-top: env(safe-area-inset-top);
  }
  
  .site-footer {
    padding-bottom: env(safe-area-inset-bottom);
  }
}

/* 打印优化 */
@media print {
  .site-header {
    position: relative;
    background: #fff;
    border-bottom: 1px solid #ddd;
  }
  
  .hero {
    min-height: auto;
    padding: 40px 0;
  }
  
  .btn,
  .nav-cta,
  .menu-toggle {
    display: none !important;
  }
  
  .section {
    padding: 40px 0;
    page-break-inside: avoid;
  }
  
  .category-card:hover,
  .content-wall-item:hover {
    transform: none !important;
    box-shadow: none !important;
  }
}

/* 高DPI屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .hero-image {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
  
  .category-card:hover,
  .content-wall-item:hover {
    transform: none !important;
  }
}

/* 暗黑模式适配（保留浅色优先） */
@media (prefers-color-scheme: dark) {
  body {
    background: #FFFAF6;
    color: #2D1B4E;
  }
  
  .site-header {
    background: rgba(255, 250, 246, 0.9);
  }
  
  .section:nth-child(even) {
    background: #F7F2FF;
  }
  
  .category-card,
  .content-wall-item,
  .faq-item,
  .stat-item {
    background: #fff;
  }
}

/* 亿万28 品牌色变量 */
:root {
  --brand-orange: #FF6B35;
  --brand-purple: #6C3FB8;
  --brand-green: #00BFA5;
  --brand-dark: #2D1B4E;
  --brand-warm: #FFFAF6;
  --brand-lavender: #F7F2FF;
}