*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #FF6B5B;
  --primary-dark: #E85A4A;
  --primary-light: #FF9F8C;
  --secondary: #2EC4B6;
  --secondary-light: #E0F5F2;
  --accent: #FFD166;
  --accent-light: #FFF4D6;
  --bg-main: #FFFAF0;
  --bg-alt: #F0FAF9;
  --bg-white: #FFFFFF;
  --text-main: #2D3142;
  --text-muted: #6B7280;
  --shadow-sm: 0 2px 12px rgba(45, 49, 66, 0.06);
  --shadow-md: 0 8px 32px rgba(45, 49, 66, 0.08);
  --shadow-lg: 0 16px 48px rgba(45, 49, 66, 0.12);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
}

html { scroll-behavior: smooth; }

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

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

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

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

/* ============================================================
   导航 — 固定顶部
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 250, 240, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 107, 91, 0.12);
  box-shadow: 0 1px 20px rgba(45, 49, 66, 0.04);
  transition: background 0.3s, box-shadow 0.3s;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 24px rgba(45, 49, 66, 0.08);
}

.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: 900;
  font-size: 1.3rem;
  text-decoration: none;
  color: var(--text-main);
  letter-spacing: -1px;
  transition: opacity 0.3s;
}

.logo:hover { opacity: 0.85; }

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: 0 4px 14px rgba(255, 107, 91, 0.3);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.logo:hover .logo-icon {
  transform: rotate(-10deg) scale(1.05);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
  padding: 4px 0;
  position: relative;
  letter-spacing: 0.3px;
  transition: color 0.3s;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.main-nav a:hover::after {
  transform: scaleX(1);
}

.nav-cta {
  padding: 10px 24px;
  border-radius: 100px;
  color: #fff !important;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 4px 16px rgba(255, 107, 91, 0.35);
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
}

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

.nav-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(255, 107, 91, 0.45);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 1.5px solid rgba(45, 49, 66, 0.2);
  border-radius: 12px;
  cursor: pointer;
  position: relative;
  padding: 0;
  transition: all 0.3s;
}

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

.menu-toggle::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 18px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  box-shadow: 0 -6px 0 var(--text-main), 0 6px 0 var(--text-main);
  transition: all 0.3s;
}

.menu-toggle.open::before {
  background: transparent;
  box-shadow: none;
}

/* ============================================================
   Hero 英雄区
   ============================================================ */
.hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
  background:
    radial-gradient(circle at 85% 25%, rgba(255, 209, 102, 0.35), transparent 45%),
    radial-gradient(circle at 8% 85%, rgba(46, 196, 182, 0.22), transparent 40%),
    linear-gradient(160deg, #FFFAF0 0%, #FFF5EC 55%, #FDF8F3 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -15%;
  right: -8%;
  width: 55vw;
  height: 55vw;
  max-width: 650px;
  max-height: 650px;
  min-width: 400px;
  min-height: 400px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(255, 107, 91, 0.14), rgba(255, 209, 102, 0.18));
  z-index: 0;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -15%;
  left: -5%;
  width: 30vw;
  height: 30vw;
  max-width: 350px;
  max-height: 350px;
  border-radius: 50%;
  border: 3px dashed rgba(46, 196, 182, 0.4);
  z-index: 0;
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 64px;
  align-items: center;
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-content {
  max-width: 640px;
  position: relative;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: 100px;
  background: var(--accent);
  color: var(--text-main);
  margin-bottom: 24px;
  transform: rotate(-2deg);
  text-transform: uppercase;
  letter-spacing: 2px;
  box-shadow: 0 4px 12px rgba(255, 209, 102, 0.5);
  transition: transform 0.3s;
}

.hero-eyebrow:hover {
  transform: rotate(0deg) scale(1.05);
}

.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -2.5px;
  margin-bottom: 24px;
  color: var(--text-main);
  text-wrap: balance;
}

.hero h1 .text-accent {
  color: var(--primary);
  font-style: italic;
  position: relative;
  display: inline-block;
}

.hero h1 .text-accent::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 8px;
  background: rgba(255, 209, 102, 0.5);
  border-radius: 4px;
  z-index: -1;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  opacity: 0.85;
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.8;
  font-weight: 400;
}

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

.hero-image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: rotate(2deg);
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  animation: float 7s ease-in-out infinite;
  border: 6px solid rgba(255, 255, 255, 0.8);
}

.hero-image:hover {
  transform: rotate(0deg) scale(1.02);
}

@keyframes float {
  0%, 100% { transform: rotate(2deg) translateY(0); }
  50% { transform: rotate(4deg) translateY(-16px); }
}

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 100px;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  letter-spacing: 0.3px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 6px 20px rgba(255, 107, 91, 0.35);
}

.btn-primary:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(255, 107, 91, 0.45);
}

.btn-primary:active {
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-4px);
  background: rgba(255, 107, 91, 0.04);
}

/* ============================================================
   标签 / 标题
   ============================================================ */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  padding: 7px 18px;
  border-radius: 100px;
  background: rgba(255, 107, 91, 0.1);
  color: var(--primary);
  margin-bottom: 18px;
  position: relative;
  transform: rotate(-1deg);
  transition: transform 0.3s;
}

.section-label:hover {
  transform: rotate(0deg) scale(1.03);
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -1.5px;
  margin-bottom: 16px;
  color: var(--text-main);
  position: relative;
}

.section-desc {
  max-width: 620px;
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 48px;
}

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

.category-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1px solid rgba(45, 49, 66, 0.04);
  position: relative;
  overflow: hidden;
  transition: all 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.category-card::after {
  content: '';
  position: absolute;
  bottom: -50px;
  right: -50px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(46, 196, 182, 0.06);
  transition: transform 0.5s;
}

.category-card:hover {
  transform: translateY(-8px) rotate(0.6deg);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

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

.category-card:hover::after {
  transform: scale(2.2);
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(255, 107, 91, 0.1), rgba(255, 209, 102, 0.15));
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 22px;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.category-card:hover .card-icon {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  transform: scale(1.1) rotate(-8deg);
  box-shadow: 0 8px 20px rgba(255, 107, 91, 0.3);
}

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  transition: color 0.3s, gap 0.3s;
}

.card-link::after {
  content: '→';
  transition: transform 0.3s;
  font-size: 1.1rem;
}

.card-link:hover {
  color: var(--primary);
  gap: 12px;
}

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

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

.feature-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-md);
  transition: box-shadow 0.4s;
}

.feature-image::before {
  content: '';
  position: absolute;
  top: -20px;
  left: -20px;
  width: 80px;
  height: 80px;
  border-radius: 24px;
  background: var(--accent);
  opacity: 0.15;
  z-index: 0;
  transition: all 0.4s;
}

.feature-image:hover {
  box-shadow: var(--shadow-lg);
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.feature-text {
  position: relative;
}

.feature-text .section-label {
  margin-bottom: 16px;
}

.feature-list {
  list-style: none;
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.feature-list li {
  padding: 12px 20px;
  background: rgba(46, 196, 182, 0.07);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 14px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.3s;
  border: 1px solid rgba(46, 196, 182, 0.1);
}

.feature-list li:hover {
  background: rgba(46, 196, 182, 0.12);
  transform: translateX(6px);
}

.feature-list li::before {
  content: '✓';
  font-weight: 900;
  color: var(--secondary);
  font-size: 1.1rem;
  background: rgba(46, 196, 182, 0.15);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ============================================================
   数据条
   ============================================================ */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  background: var(--bg-white);
  padding: 36px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(45, 49, 66, 0.04);
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 56px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: transform 0.4s;
}

.stat-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.stat-item:hover::after {
  transform: translateX(-50%) scaleX(1);
}

.stat-number {
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -3px;
  color: var(--primary);
  margin-bottom: 10px;
  font-variant-numeric: tabular-nums;
}

.stat-item:nth-child(2) .stat-number { color: var(--secondary); }
.stat-item:nth-child(3) .stat-number { color: #F4A261; }

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.5px;
}

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

.content-wall-item {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(45, 49, 66, 0.04);
  transition: all 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
}

.content-wall-item:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: var(--shadow-lg);
}

.content-wall-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

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

.content-wall-body h3 {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.content-wall-body p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-white);
  border: 1px solid rgba(45, 49, 66, 0.06);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.faq-item:hover {
  border-color: rgba(255, 107, 91, 0.3);
  box-shadow: var(--shadow-sm);
}

.faq-item.open {
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 107, 91, 0.2);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 700;
  font-size: 1.02rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  gap: 16px;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--primary);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  flex-shrink: 0;
  line-height: 1;
}

.faq-item.open .faq-question::after {
  transform: rotate(135deg);
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  color: var(--text-muted);
  line-height: 1.8;
  font-size: 0.95rem;
  animation: fadeIn 0.3s ease-in-out;
}

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

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

/* ============================================================
   CTA横幅
   ============================================================ */
.cta-banner {
  padding: 72px 48px;
  text-align: center;
  border-radius: var(--radius-xl);
  color: #fff;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary) 0%, #FF8C69 40%, var(--accent) 100%);
  box-shadow: 0 16px 48px rgba(255, 107, 91, 0.35);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 4px dashed rgba(255, 255, 255, 0.25);
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
  letter-spacing: -1px;
}

.cta-banner p {
  position: relative;
  z-index: 1;
  max-width: 500px;
  margin: 0 auto 32px;
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.05rem;
  line-height: 1.7;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--primary);
  position: relative;
  z-index: 1;
  padding: 16px 40px;
  border-radius: 100px;
  font-weight: 800;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.15);
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.cta-banner .btn-primary:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2);
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  padding: 64px 0 32px;
  background: var(--secondary-light);
  border-top: 1px solid rgba(46, 196, 182, 0.15);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -2px;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
  opacity: 0.6;
}

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

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.8;
  max-width: 260px;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
}

.footer-col ul {
  list-style: none;
  display: grid;
  gap: 12px;
}

.footer-col ul a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-col ul a::before {
  content: '›';
  font-size: 1.2rem;
  color: var(--secondary);
  transition: transform 0.3s;
}

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

.footer-col ul a:hover::before {
  transform: translateX(2px);
}

.footer-bottom {
  border-top: 1px solid rgba(45, 49, 66, 0.06);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

/* ============================================================
   工具类
   ============================================================ */
.text-accent {
  color: var(--primary);
  font-style: italic;
  font-weight: 800;
}

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

.seo-description {
  max-width: 680px;
  margin: 0 auto 56px;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.9;
  font-size: 1.02rem;
}

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

/* ============================================================
   响应式 — 平板 ≤768px
   ============================================================ */
@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .hero {
    padding: 100px 0 56px;
    min-height: auto;
  }

  .hero .container {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero h1 {
    font-size: 2.2rem;
    letter-spacing: -1.5px;
  }

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

  .hero-image {
    max-width: 100%;
    margin: 0 auto;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: var(--bg-white);
    padding: 24px;
    flex-direction: column;
    align-items: flex-start;
    box-shadow: var(--shadow-lg);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    border-top: 2px solid var(--primary);
    gap: 20px;
  }

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

  .main-nav a {
    font-size: 1.05rem;
    padding: 8px 4px;
    width: 100%;
  }

  .nav-cta {
    margin-top: 8px;
    padding: 12px 28px;
  }

  .menu-toggle {
    display: flex;
  }

  .cta-banner {
    padding: 56px 24px;
  }

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

/* ============================================================
   响应式 — 手机 ≤480px
   ============================================================ */
@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }

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

  .hero-buttons {
    flex-direction: column;
    gap: 12px;
  }

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

  .hero-eyebrow {
    font-size: 0.75rem;
    padding: 6px 14px;
  }

  .stat-number {
    font-size: 2.2rem;
  }

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

  .faq-item .faq-question {
    font-size: 0.95rem;
    padding: 18px 16px;
  }

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

  .cta-banner {
    padding: 48px 20px;
    border-radius: var(--radius-lg);
  }
}

/* ============================================================
   动效增强 — 减少闪烁偏好
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================================
   滚动条定制
   ============================================================ */
::-webkit-scrollbar {
  width: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary-light), var(--secondary));
  border-radius: 10px;
  border: 2px solid var(--bg-main);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--primary), var(--secondary));
}

::selection {
  background: rgba(255, 107, 91, 0.2);
  color: var(--text-main);
}