/* ═══════════════════════════════════════════════════
   糖果派对 - 糖果梦幻玻璃态设计系统
   温暖奶油基底 × 珊瑚粉 × 薄荷绿 × 淡紫罗兰
   ═══════════════════════════════════════════════════ */

:root {
  --cream: #fefaf6;
  --soft-pink: #fef3ed;
  --coral: #e8877a;
  --coral-dark: #d47063;
  --mint: #7ecba1;
  --mint-dark: #5db888;
  --lavender: #b8a9d4;
  --honey: #f0a050;
  --chocolate: #3d2c2a;
  --chocolate-light: #6b5552;
  --border-soft: #f0e0d8;
  --border-warm: #e8d5cc;
  --white: #ffffff;
  --shadow-soft: 0 4px 20px rgba(184, 140, 120, 0.12);
  --shadow-card: 0 2px 12px rgba(184, 140, 120, 0.08);
  --shadow-lift: 0 8px 28px rgba(184, 140, 120, 0.18);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 50px;
  --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;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  overflow-x: hidden;
  background: var(--cream);
  color: var(--chocolate);
  line-height: 1.65;
  letter-spacing: 0.01em;
}

::selection {
  background: rgba(232, 135, 122, 0.22);
  color: var(--chocolate);
}

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

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

.section:nth-child(even) {
  background: var(--soft-pink);
  position: relative;
}

.section:nth-child(even)::before {
  content: '';
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%);
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(184, 169, 212, 0.13) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.section:nth-child(even) .container {
  position: relative;
  z-index: 1;
}

/* 导航 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(254, 250, 246, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-soft);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 2px 24px rgba(184, 140, 120, 0.10);
}

.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: var(--chocolate);
  letter-spacing: -0.01em;
  transition: var(--transition);
}

.logo:hover {
  color: var(--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, #fde0d8 0%, #fcd5cc 40%, #fef0e8 100%);
  color: var(--coral);
  box-shadow: 0 2px 8px rgba(232, 135, 122, 0.18);
  position: relative;
  overflow: hidden;
}

.logo-icon::after {
  content: '';
  position: absolute;
  top: 6px;
  right: 6px;
  width: 10px;
  height: 10px;
  background: rgba(255, 255, 255, 0.7);
  border-radius: 50%;
  pointer-events: none;
}

.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(--chocolate-light);
  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(--coral);
  border-radius: 2px;
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

.nav-cta {
  padding: 9px 22px !important;
  border-radius: var(--radius-full) !important;
  color: #fff !important;
  font-weight: 600 !important;
  background: linear-gradient(135deg, var(--coral) 0%, var(--honey) 100%) !important;
  box-shadow: 0 3px 14px rgba(232, 135, 122, 0.3);
  transition: var(--transition) !important;
  letter-spacing: 0.02em;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(232, 135, 122, 0.4) !important;
  color: #fff !important;
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px 4px;
  background: none;
  border: none;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: var(--chocolate);
  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);
}

/* Hero */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 40px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -180px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(240, 160, 80, 0.13) 0%, rgba(232, 135, 122, 0.08) 40%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -140px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(184, 169, 212, 0.12) 0%, rgba(126, 203, 161, 0.06) 40%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
  width: 100%;
}

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

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 18px;
  background: rgba(232, 135, 122, 0.1);
  color: var(--coral);
  letter-spacing: 0.04em;
  border: 1px solid rgba(232, 135, 122, 0.18);
}

.hero h1 {
  font-size: 2.8rem;
  line-height: 1.15;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--chocolate);
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--coral) 0%, var(--honey) 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(--chocolate-light);
  line-height: 1.7;
}

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

.hero-image {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-lift);
  position: relative;
}

.hero-image::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  pointer-events: none;
  z-index: 2;
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 16px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: var(--radius-full);
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--coral) 0%, #e8956e 60%, var(--honey) 100%);
  box-shadow: 0 4px 18px rgba(232, 135, 122, 0.32);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(232, 135, 122, 0.42);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  border: 1.8px solid var(--coral);
  color: var(--coral);
}

.btn-outline:hover {
  background: rgba(232, 135, 122, 0.06);
  border-color: var(--coral-dark);
  color: var(--coral-dark);
  transform: translateY(-2px);
}

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 12px;
  color: var(--coral);
  text-transform: uppercase;
  position: relative;
  padding-left: 28px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 2px;
  background: linear-gradient(90deg, var(--coral), var(--honey));
  border-radius: 1px;
}

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

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 40px;
  color: var(--chocolate-light);
  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: 30px 28px;
  border: 1.5px solid var(--border-soft);
  transition: var(--transition);
  background: var(--white);
  position: relative;
  cursor: pointer;
}

.category-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(232, 135, 122, 0.03) 0%, rgba(240, 160, 80, 0.02) 100%);
  pointer-events: none;
  opacity: 0;
  transition: var(--transition);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
  border-color: rgba(232, 135, 122, 0.25);
}

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

.card-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, #fef0e8 0%, #fde4da 100%);
  color: var(--coral);
  box-shadow: 0 3px 10px rgba(232, 135, 122, 0.12);
}

.category-card:nth-child(3n+2) .card-icon {
  background: linear-gradient(135deg, #edfaf3 0%, #daf5e5 100%);
  color: var(--mint-dark);
  box-shadow: 0 3px 10px rgba(126, 203, 161, 0.14);
}

.category-card:nth-child(3n+3) .card-icon {
  background: linear-gradient(135deg, #f3f0f9 0%, #e8e3f3 100%);
  color: #8b7ab8;
  box-shadow: 0 3px 10px rgba(184, 169, 212, 0.16);
}

.category-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--chocolate);
}

.category-card p {
  font-size: 0.9rem;
  color: var(--chocolate-light);
  opacity: 0.75;
  line-height: 1.6;
  margin-bottom: 14px;
}

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

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

/* 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-soft);
  position: relative;
}

.feature-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 2px solid rgba(255, 255, 255, 0.4);
  pointer-events: none;
}

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

.feature-text h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--chocolate);
  letter-spacing: -0.01em;
}

.feature-text p {
  color: var(--chocolate-light);
  opacity: 0.75;
  line-height: 1.7;
  margin-bottom: 18px;
}

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

.feature-list li {
  padding: 7px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--chocolate-light);
  font-size: 0.95rem;
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: var(--mint-dark);
  font-size: 1rem;
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(126, 203, 161, 0.12);
  border-radius: 50%;
}

/* 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: var(--radius-lg);
  border: 1.5px solid var(--border-soft);
  background: var(--white);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 20%;
  width: 60%;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, var(--coral), transparent);
  opacity: 0;
  transition: var(--transition);
}

.stat-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.stat-item:hover::after {
  opacity: 0.6;
}

.stat-item:nth-child(1) { background: linear-gradient(180deg, #fff 0%, #fef7f4 100%); }
.stat-item:nth-child(2) { background: linear-gradient(180deg, #fff 0%, #f7fdf9 100%); }
.stat-item:nth-child(3) { background: linear-gradient(180deg, #fff 0%, #f9f7fc 100%); }
.stat-item:nth-child(4) { background: linear-gradient(180deg, #fff 0%, #fffaf5 100%); }

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

.stat-item:nth-child(1) .stat-number { color: var(--coral); }
.stat-item:nth-child(2) .stat-number { color: var(--mint-dark); }
.stat-item:nth-child(3) .stat-number { color: #8b7ab8; }
.stat-item:nth-child(4) .stat-number { color: var(--honey); }

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 8px;
  color: var(--chocolate-light);
  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: 1.5px solid var(--border-soft);
  transition: var(--transition);
  background: var(--white);
}

.content-wall-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
  border-color: rgba(232, 135, 122, 0.2);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

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

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--chocolate);
}

.content-wall-body p {
  font-size: 0.88rem;
  color: var(--chocolate-light);
  opacity: 0.7;
  line-height: 1.6;
}

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

.faq-item {
  border: 1.5px solid var(--border-soft);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: var(--white);
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(232, 135, 122, 0.25);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--chocolate);
  font-size: 0.98rem;
  transition: var(--transition);
  gap: 16px;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--coral);
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

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

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  opacity: 0.7;
  color: var(--chocolate-light);
  line-height: 1.7;
  font-size: 0.92rem;
}

.faq-item.open .faq-answer {
  display: block;
  animation: faqFadeIn 0.35s ease;
}

.faq-item.open {
  border-color: rgba(232, 135, 122, 0.3);
  box-shadow: 0 2px 14px rgba(184, 140, 120, 0.08);
}

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

/* CTA横幅 */
.cta-banner {
  padding: 60px 28px;
  text-align: center;
  border-radius: var(--radius-xl);
  color: #fff;
  background: linear-gradient(135deg, #e8877a 0%, #e8956e 30%, #f0a050 70%, #f5b860 100%);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 36px rgba(232, 135, 122, 0.28);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 260px;
  height: 260px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -60px;
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
  letter-spacing: -0.01em;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
  font-size: 1.05rem;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--coral);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.12);
  position: relative;
  z-index: 1;
  font-weight: 700;
}

.cta-banner .btn-primary:hover {
  background: #fffefd;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.16);
  color: var(--coral-dark);
}

/* 页脚 */
.site-footer {
  padding: 56px 0 28px;
  background: #fef7f3;
  border-top: 1px solid var(--border-soft);
}

.site-footer .container {
  position: relative;
}

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

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

.footer-brand p {
  font-size: 0.9rem;
  color: var(--chocolate-light);
  opacity: 0.7;
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--chocolate);
  letter-spacing: 0.03em;
}

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

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

.footer-col ul li a {
  text-decoration: none;
  color: var(--chocolate-light);
  font-size: 0.88rem;
  opacity: 0.7;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--coral);
  opacity: 1;
}

.footer-bottom {
  border-top: 1px solid var(--border-soft);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--chocolate-light);
  opacity: 0.6;
}

/* 工具类 */
.text-accent {
  color: var(--coral);
  font-weight: 600;
}

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

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

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

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

/* ═══════════════════════════════════════
   响应式设计
   ═══════════════════════════════════════ */

@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 36px;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
    order: 1;
  }

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

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

  .hero-image {
    max-width: 480px;
    margin: 0 auto;
    order: 0;
  }

  .hero {
    min-height: auto;
    padding-top: 100px;
    padding-bottom: 40px;
  }

  .section-label {
    margin-left: auto;
    margin-right: auto;
    display: table;
  }

  .section-desc {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }

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

@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .feature-image {
    order: -1;
    max-width: 480px;
    margin: 0 auto;
  }

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

  .feature-list li {
    justify-content: center;
  }

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

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

  .footer-brand {
    grid-column: 1 / -1;
    text-align: center;
  }

  .footer-brand p {
    max-width: 100%;
  }

  .main-nav {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(254, 250, 246, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 20px 24px;
    flex-direction: column;
    gap: 6px;
    border-bottom: 1px solid var(--border-soft);
    box-shadow: 0 8px 30px rgba(184, 140, 120, 0.12);
    z-index: 999;
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 12px 8px;
    font-size: 1rem;
    width: 100%;
    border-radius: var(--radius-sm);
  }

  .main-nav a:hover {
    background: rgba(232, 135, 122, 0.05);
  }

  .main-nav a::after {
    display: none;
  }

  .nav-cta {
    text-align: center;
    justify-content: center;
    margin-top: 8px;
  }

  .menu-toggle {
    display: flex;
  }

  .hero h1 {
    font-size: 2.1rem;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .section {
    padding: 56px 0;
  }

  .cta-banner {
    padding: 44px 20px;
  }

  .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;
  }
}

@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;
    align-items: center;
  }

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

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

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

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

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

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

  .category-card {
    padding: 22px 20px;
  }

  .content-wall-item img {
    height: 160px;
  }

  .footer-bottom {
    font-size: 0.78rem;
  }

  .container {
    padding: 0 16px;
  }

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

  .faq-item .faq-question {
    padding: 14px 16px;
    font-size: 0.9rem;
  }

  .faq-item .faq-answer {
    padding: 0 16px 14px;
  }
}

/* 额外微交互 */
@media (hover: hover) {
  .category-card:hover .card-link {
    color: var(--coral-dark);
  }

  .content-wall-item:hover .content-wall-body h3 {
    color: var(--coral);
  }

  .stat-item:hover .stat-number {
    transform: scale(1.04);
    transition: transform 0.3s ease;
  }
}

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

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

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