/* ============================================
   188娱乐平台 — 完整CSS设计系统
   风格：暖光霓虹 · 柔和流体 · 温暖现代
   ============================================ */

/* === CSS变量 === */
:root {
  --bg-primary: #FFFBF7;
  --bg-warm: #FFF3EA;
  --bg-card: #FFFFFF;
  --text-primary: #2C2A38;
  --text-secondary: #5C5A6B;
  --text-muted: #8B8899;
  --accent-coral: #FF5E5B;
  --accent-coral-dark: #E84D4A;
  --accent-coral-light: #FFF0EE;
  --accent-gold: #FF9F43;
  --accent-gold-light: #FFF6ED;
  --accent-plum: #3D356B;
  --accent-plum-light: #F3F1FB;
  --accent-mint: #5EBE8E;
  --accent-mint-light: #EDF8F2;
  --accent-sky: #7EB8DA;
  --border-warm: #EDE5DC;
  --border-light: #F0EBE4;
  --shadow-sm: 0 1px 3px rgba(44,42,56,0.06), 0 1px 2px rgba(44,42,56,0.04);
  --shadow-md: 0 4px 20px rgba(44,42,56,0.08), 0 2px 8px rgba(44,42,56,0.04);
  --shadow-lg: 0 12px 40px rgba(44,42,56,0.10), 0 4px 16px rgba(44,42,56,0.05);
  --shadow-glow: 0 4px 24px rgba(255,94,91,0.18), 0 2px 8px rgba(255,94,91,0.08);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === 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', 'Noto Sans SC', sans-serif;
  overflow-x: hidden;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -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;
}

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

/* === 导航 — 固定顶部 === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 251, 247, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-warm);
  transition: 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-primary);
  letter-spacing: -0.02em;
  transition: var(--transition);
}

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

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: linear-gradient(135deg, #FF5E5B 0%, #FF9F43 50%, #FFB347 100%);
  color: #fff;
  font-weight: 800;
  letter-spacing: -1px;
  box-shadow: 0 2px 10px rgba(255,94,91,0.25);
}

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

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-coral);
  border-radius: 2px;
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

.nav-cta {
  padding: 10px 22px !important;
  border-radius: 25px !important;
  color: #fff !important;
  font-weight: 600 !important;
  background: linear-gradient(135deg, #FF5E5B 0%, #FF7B6A 100%);
  box-shadow: 0 4px 14px rgba(255,94,91,0.3);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(255,94,91,0.4);
  color: #fff !important;
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: var(--text-primary);
  border-radius: 3px;
  transition: var(--transition);
}

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

.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -180px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,158,67,0.12) 0%, rgba(255,94,91,0.06) 35%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(94,190,142,0.08) 0%, rgba(126,184,218,0.04) 40%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 720px;
  flex: 1;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 16px;
  background: var(--accent-coral-light);
  color: var(--accent-coral);
  letter-spacing: 0.04em;
}

.hero h1 {
  font-size: 2.8rem;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text-primary);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, #FF5E5B 0%, #FF9F43 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

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

.hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  flex: 0 0 420px;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.hero-image::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 2px solid rgba(255,255,255,0.6);
  z-index: 2;
  pointer-events: none;
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-image:hover img {
  transform: scale(1.03);
}

/* === 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 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #FF5E5B 0%, #FF7B6A 100%);
  box-shadow: 0 4px 18px rgba(255,94,91,0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(255,94,91,0.4);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 10px rgba(255,94,91,0.3);
}

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

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

/* === 标签/标题 === */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 12px;
  color: var(--accent-coral);
  text-transform: uppercase;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 14px;
  color: var(--text-primary);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 40px;
  color: var(--text-secondary);
  font-size: 1.05rem;
  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: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--border-warm);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  background: var(--bg-card);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #FF5E5B 0%, #FF9F43 50%, #FFB347 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 0 0 3px 3px;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

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

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.4rem;
  background: var(--accent-coral-light);
  color: var(--accent-coral);
  transition: var(--transition);
}

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

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

.category-card:nth-child(4n) .card-icon {
  background: var(--accent-plum-light);
  color: var(--accent-plum);
}

.category-card:hover .card-icon {
  transform: scale(1.08);
}

.category-card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  font-weight: 700;
  color: var(--text-primary);
}

.category-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--accent-coral);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}

.card-link:hover {
  gap: 8px;
  color: var(--accent-coral-dark);
}

/* === 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-lg);
  position: relative;
}

.feature-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 2px solid rgba(255,255,255,0.5);
  pointer-events: none;
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-image:hover img {
  transform: scale(1.04);
}

.feature-text h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-text p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
}

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

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: var(--accent-mint);
  background: var(--accent-mint-light);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  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 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-warm);
  background: var(--bg-card);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) translateY(100%);
  width: 60px;
  height: 3px;
  background: var(--accent-coral);
  border-radius: 3px;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.stat-item:hover::after {
  transform: translateX(-50%) translateY(0);
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1;
}

.stat-number .accent {
  color: var(--accent-coral);
}

.stat-item:nth-child(2) .stat-number .accent {
  color: var(--accent-gold);
}

.stat-item:nth-child(3) .stat-number .accent {
  color: var(--accent-mint);
}

.stat-item:nth-child(4) .stat-number .accent {
  color: var(--accent-plum);
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 8px;
  color: var(--text-muted);
  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-lg);
  overflow: hidden;
  border: 1px solid var(--border-warm);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  background: var(--bg-card);
}

.content-wall-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

.content-wall-body h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}

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

.content-wall-body .meta {
  font-size: 0.78rem;
  color: var(--accent-coral);
  font-weight: 600;
  margin-top: 8px;
  display: inline-block;
}

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

.faq-item {
  border: 1px solid var(--border-warm);
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-card);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition);
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--accent-coral);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
  margin-left: 12px;
}

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

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  opacity: 0.7;
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.93rem;
}

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

.faq-item.open {
  border-color: var(--accent-coral-light);
  box-shadow: var(--shadow-md);
  background: #FFFCFA;
}

/* === CTA横幅 === */
.cta-banner {
  padding: 56px 24px;
  text-align: center;
  border-radius: var(--radius-xl);
  color: #fff;
  background: linear-gradient(135deg, #3D356B 0%, #5B4F9E 30%, #6C5FB5 60%, #4A3F7A 100%);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(255,158,67,0.25) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: -40px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(255,94,91,0.2) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-weight: 800;
  font-size: 2rem;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  color: rgba(255,255,255,0.8);
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
  font-size: 1.05rem;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--accent-plum);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  background: #FFFBF7;
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
  transform: translateY(-3px);
}

/* === 页脚 === */
.site-footer {
  padding: 56px 0 28px;
  background: #2C2A38;
  color: rgba(255,255,255,0.8);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255,158,67,0.4) 30%, rgba(255,94,91,0.4) 50%, rgba(255,158,67,0.4) 70%, transparent 100%);
}

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

.footer-brand h3 {
  color: #fff;
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.footer-brand p {
  color: rgba(255,255,255,0.55);
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-col h4 {
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

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

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

.footer-col ul li a {
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  font-size: 0.88rem;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--accent-gold);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

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

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

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

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

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

/* === 装饰性分割线 === */
.section-divider {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, #FF5E5B 0%, #FF9F43 100%);
  border-radius: 2px;
  margin: 0 auto 40px;
}

/* === 滚动条美化 === */
::-webkit-scrollbar {
  width: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border-warm);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-coral-light);
}

/* === 选中文字样式 === */
::selection {
  background: var(--accent-coral-light);
  color: var(--accent-coral-dark);
}

/* ============================================
   响应式设计
   ============================================ */

@media (max-width: 1024px) {
  .hero .container {
    flex-direction: column;
    text-align: center;
    gap: 36px;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero p {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-image {
    flex: 0 0 auto;
    max-width: 480px;
    width: 100%;
  }

  .hero h1 {
    font-size: 2.3rem;
  }

  .feature-block {
    gap: 36px;
  }

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

@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

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

  .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: 68px;
    left: 0;
    width: 100%;
    background: rgba(255, 251, 247, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border-warm);
    box-shadow: var(--shadow-lg);
  }

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

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

  .hero {
    min-height: 60vh;
    text-align: center;
  }

  .hero .container {
    gap: 24px;
  }

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

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

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .hero-image {
    max-width: 360px;
  }

  .section {
    padding: 56px 0;
  }

  .section-title {
    font-size: 1.5rem;
  }

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

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

  .cards-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
  }

  .content-wall {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
  }

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

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
    gap: 14px;
  }

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

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

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

  .hero {
    min-height: 55vh;
  }

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

  .hero-image {
    max-width: 100%;
    border-radius: var(--radius-md);
  }

  .section {
    padding: 40px 0;
  }

  .section-title {
    font-size: 1.35rem;
  }

  .stat-item {
    padding: 20px 16px;
  }

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

  .feature-block {
    gap: 20px;
  }

  .container {
    padding: 0 16px;
  }

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

  .cta-banner {
    padding: 32px 16px;
  }

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

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

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 4px 18px rgba(255,94,91,0.3); }
  50% { box-shadow: 0 6px 26px rgba(255,94,91,0.5); }
}

.btn-primary.pulse {
  animation: pulse-glow 2.5s ease-in-out infinite;
}

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

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

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