/* =============================================
   168双赢彩票 · 赤陶金韵设计系统
   获奖设计师：独特温暖主义
   ============================================= */

/* 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: #FDF7F0;
  color: #2D4036;
  line-height: 1.6;
}

/* =============================================
   设计令牌
   ============================================= */
:root {
  --primary: #D4532A;
  --primary-light: #F5E6D6;
  --primary-glow: rgba(212, 83, 42, 0.12);
  --accent: #E8B85A;
  --accent-soft: #F7ECD0;
  --dark: #2D4036;
  --dark-soft: #4A5F52;
  --bg: #FDF7F0;
  --bg-alt: #F5EDE0;
  --bg-card: #FFFFFF;
  --text: #2D4036;
  --text-light: #6B7B6B;
  --border: #E8DDD0;
  --shadow-sm: 0 2px 12px rgba(45, 64, 54, 0.06);
  --shadow-md: 0 8px 32px rgba(45, 64, 54, 0.08);
  --shadow-lg: 0 16px 48px rgba(45, 64, 54, 0.10);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

/* =============================================
   装饰性背景纹理（独特视觉元素）
   ============================================= */
body::before {
  content: '';
  position: fixed;
  top: -40%;
  right: -20%;
  width: 80vmax;
  height: 80vmax;
  background: radial-gradient(circle at 30% 40%, rgba(232, 184, 90, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  bottom: -30%;
  left: -10%;
  width: 60vmax;
  height: 60vmax;
  background: radial-gradient(circle at 70% 60%, rgba(212, 83, 42, 0.06) 0%, transparent 70%);
  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: 100px 0;
  position: relative;
}

.section:nth-child(even) {
  background: var(--bg-alt);
}

.section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  opacity: 0.4;
}

.section:first-of-type::before {
  display: none;
}

/* =============================================
   导航 — 固定顶部（独特玻璃+陶土质感）
   ============================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(253, 247, 240, 0.88);
  backdrop-filter: blur(24px) saturate(1.2);
  border-bottom: 1px solid rgba(232, 221, 208, 0.5);
  box-shadow: 0 1px 20px rgba(45, 64, 54, 0.04);
  transition: var(--transition);
}

.site-header.scrolled {
  background: rgba(253, 247, 240, 0.96);
  box-shadow: 0 4px 30px rgba(45, 64, 54, 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: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--dark);
  letter-spacing: -0.3px;
  transition: var(--transition);
}

.logo:hover {
  color: var(--primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--primary), #D65A31);
  color: #fff;
  box-shadow: 0 4px 12px rgba(212, 83, 42, 0.25);
  position: relative;
  overflow: hidden;
}

.logo-icon::after {
  content: '★';
  font-size: 0.7rem;
  position: absolute;
  top: 2px;
  right: 4px;
  opacity: 0.5;
  color: var(--accent);
}

.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(--dark-soft);
  transition: var(--transition);
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  transition: var(--transition);
}

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

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

.nav-cta {
  padding: 10px 24px !important;
  border-radius: 50px !important;
  color: #fff !important;
  font-weight: 600 !important;
  background: linear-gradient(135deg, var(--primary), #D65A31) !important;
  box-shadow: 0 4px 16px rgba(212, 83, 42, 0.25);
  transition: var(--transition) !important;
}

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

.nav-cta:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 24px rgba(212, 83, 42, 0.35) !important;
  color: #fff !important;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.3rem;
  color: var(--dark);
  transition: var(--transition);
}

.menu-toggle:hover {
  background: var(--primary-light);
  border-color: var(--primary);
}

/* =============================================
   首页Hero（独特层叠排版）
   ============================================= */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 72px;
  overflow: hidden;
  background: linear-gradient(160deg, var(--bg) 0%, #F8EFE4 50%, var(--bg-alt) 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 70vmin;
  height: 70vmin;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 184, 90, 0.10) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.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: 50px;
  margin-bottom: 20px;
  background: var(--accent-soft);
  color: #8B6F3A;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border: 1px solid rgba(232, 184, 90, 0.2);
}

.hero h1 {
  font-size: 3.2rem;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--dark);
  font-weight: 800;
  letter-spacing: -0.5px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary), #D65A31);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero h1 .highlight-gold {
  background: linear-gradient(135deg, var(--accent), #D4A84B);
  -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(--dark-soft);
  line-height: 1.7;
}

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

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

.hero-image::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.2);
  pointer-events: none;
  z-index: 1;
}

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

/* =============================================
   按钮系统
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: var(--transition);
  letter-spacing: 0.2px;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #D65A31);
  box-shadow: 0 4px 20px rgba(212, 83, 42, 0.25);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(212, 83, 42, 0.35);
}

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

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(212, 83, 42, 0.04);
  transform: translateY(-2px);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent), #D4A84B);
  color: #2D4036;
  box-shadow: 0 4px 20px rgba(232, 184, 90, 0.25);
}

.btn-accent:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(232, 184, 90, 0.35);
}

/* =============================================
   标签 / 标题
   ============================================= */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 3px;
  margin-bottom: 14px;
  color: var(--primary);
  text-transform: uppercase;
  position: relative;
  padding-left: 32px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--dark);
  letter-spacing: -0.3px;
  line-height: 1.2;
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 44px;
  color: var(--dark-soft);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* =============================================
   卡片网格（独特陶土质感卡片）
   ============================================= */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.category-card {
  border-radius: var(--radius-md);
  padding: 32px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  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(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(212, 83, 42, 0.15);
}

.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: 18px;
  font-size: 1.4rem;
  background: var(--primary-light);
  color: var(--primary);
  transition: var(--transition);
}

.category-card:hover .card-icon {
  background: var(--primary);
  color: #fff;
  transform: scale(1.05);
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
  margin-top: 12px;
}

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

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

/* =============================================
   特性块
   ============================================= */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.feature-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-md);
}

.feature-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.15);
  pointer-events: none;
}

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

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

.feature-text {
  padding: 8px 0;
}

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

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  color: var(--dark-soft);
  border-bottom: 1px solid rgba(232, 221, 208, 0.3);
}

.feature-list li:last-child {
  border-bottom: none;
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: var(--primary);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--primary-light);
  font-size: 0.8rem;
  flex-shrink: 0;
}

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

.stat-item {
  padding: 32px 20px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  position: relative;
  transition: var(--transition);
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  opacity: 0.5;
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--dark);
  line-height: 1.1;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 8px;
  color: var(--dark-soft);
  letter-spacing: 0.5px;
}

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

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

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(212, 83, 42, 0.12);
}

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

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

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

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

.content-wall-body p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
}

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

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

.faq-item:hover {
  border-color: rgba(212, 83, 42, 0.2);
  box-shadow: var(--shadow-sm);
}

.faq-item .faq-question {
  padding: 18px 24px;
  font-weight: 600;
  font-size: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--dark);
  transition: var(--transition);
}

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

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

.faq-item .faq-answer {
  padding: 0 24px 18px;
  display: none;
  opacity: 0.75;
  color: var(--dark-soft);
  line-height: 1.7;
  font-size: 0.95rem;
}

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

.faq-item.open {
  border-color: rgba(212, 83, 42, 0.15);
}

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

/* =============================================
   CTA横幅
   ============================================= */
.cta-banner {
  padding: 64px 40px;
  text-align: center;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--primary), #B84A28);
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 80%;
  height: 200%;
  background: radial-gradient(circle, rgba(232, 184, 90, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner::after {
  content: '✦';
  position: absolute;
  bottom: 10%;
  left: 8%;
  font-size: 4rem;
  opacity: 0.08;
  color: var(--accent);
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.8);
  max-width: 560px;
  margin: 0 auto 28px;
  font-size: 1.05rem;
  position: relative;
  z-index: 1;
  line-height: 1.7;
}

.cta-banner .btn {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 1;
}

.cta-banner .btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

/* =============================================
   页脚（独特分层设计）
   ============================================= */
.site-footer {
  padding: 64px 0 28px;
  background: var(--dark);
  color: rgba(255, 255, 255, 0.8);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
  opacity: 0.3;
}

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

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

.footer-brand {
  color: rgba(255, 255, 255, 0.7);
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
  display: inline-flex;
}

.footer-brand .logo-icon {
  background: linear-gradient(135deg, var(--accent), #D4A84B);
  color: var(--dark);
}

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

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

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

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

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 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;
  color: rgba(255, 255, 255, 0.4);
}

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

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  color: var(--dark-soft);
  font-size: 1.05rem;
  line-height: 1.7;
}

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

/* =============================================
   装饰性几何元素（独特视觉语言）
   ============================================= */
.deco-dots {
  display: flex;
  gap: 6px;
  margin-top: 24px;
}

.deco-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  transition: var(--transition);
}

.deco-dots span:nth-child(1) { background: var(--primary); }
.deco-dots span:nth-child(2) { background: var(--accent); }
.deco-dots span:nth-child(3) { background: var(--border); }

/* 独特分隔线 */
.divider-rustic {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), var(--primary), var(--border), transparent);
  margin: 40px 0;
  opacity: 0.5;
}

/* 独特标签组 */
.tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0;
}

.tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid rgba(212, 83, 42, 0.08);
  transition: var(--transition);
}

.tag:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

/* =============================================
   响应式设计
   ============================================= */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 2.6rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 72px 0;
  }

  .feature-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

  .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: 72px;
    left: 0;
    width: 100%;
    background: rgba(253, 247, 240, 0.98);
    backdrop-filter: blur(24px);
    padding: 24px 28px;
    gap: 16px;
    border-bottom: 2px solid var(--border);
    box-shadow: var(--shadow-md);
  }

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

  .hero {
    min-height: 70vh;
    padding-top: 88px;
  }

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

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

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

  .cards-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
  }

  .cta-banner {
    padding: 44px 24px;
    border-radius: var(--radius-md);
  }

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

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

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

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

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

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

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

  .header-inner {
    height: 64px;
  }

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

  .content-wall-item img {
    height: 180px;
  }

  .feature-block {
    gap: 28px;
  }

  .cta-banner {
    padding: 36px 20px;
  }

  .cta-banner h2 {
    font-size: 1.3rem;
  }
}

/* =============================================
   微交互与动画
   ============================================= */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.float-animation {
  animation: float 4s ease-in-out infinite;
}

@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

.shimmer {
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  background-size: 200% 100%;
  animation: shimmer 2s ease-in-out infinite;
}

/* 滚动渐入效果 */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 选中状态 */
::selection {
  background: var(--primary);
  color: #fff;
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}