/* ===== 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: #FFFAF5;  /* 暖白基调 */
  color: #2D3436;
  line-height: 1.6;
}

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

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

.section:nth-child(even) {
  background: #FFF5EE;  /* 极淡肉粉 */
}

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 250, 245, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: none;
  box-shadow: 0 1px 0 rgba(255, 90, 95, 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: 800;
  font-size: 1.4rem;
  text-decoration: none;
  color: #2D3436;
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #FF5A5F 0%, #FF8C42 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(255, 90, 95, 0.25);
}

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

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: #2D3436;
  letter-spacing: 0.01em;
  position: relative;
  padding-bottom: 4px;
  transition: color 0.3s;
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: #FF5A5F;
  transition: width 0.3s ease;
}

.main-nav a:hover {
  color: #FF5A5F;
}

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

.nav-cta {
  padding: 10px 24px !important;
  border-radius: 50px !important;
  background: linear-gradient(135deg, #FF5A5F, #FF8C42);
  color: #fff !important;
  font-weight: 700 !important;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 14px rgba(255, 90, 95, 0.3);
  transition: transform 0.2s, box-shadow 0.2s !important;
}

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

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 90, 95, 0.4) !important;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: #2D3436;
}

/* ===== Hero ===== */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(170deg, #FFFAF5 0%, #FFF0E8 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -15%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 90, 95, 0.08), transparent 70%);
  pointer-events: none;
}

.hero .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 600px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 50px;
  background: linear-gradient(135deg, #FF5A5F, #FF8C42);
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 3.4rem;
  line-height: 1.15;
  margin-bottom: 22px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #1A1E23;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, #FF5A5F, #FF8C42);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.7;
  max-width: 500px;
  margin-bottom: 36px;
  line-height: 1.7;
  color: #4A4F54;
}

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

.hero-image {
  flex-shrink: 0;
  width: 45%;
  max-width: 520px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(255, 90, 95, 0.12);
  transform: perspective(1000px) rotateY(-4deg) rotateX(2deg);
  transition: transform 0.4s;
}

.hero-image:hover {
  transform: perspective(1000px) rotateY(0) rotateX(0);
}

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

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s ease;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

.btn-primary {
  background: linear-gradient(135deg, #FF5A5F, #FF8C42);
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 90, 95, 0.25);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(255, 90, 95, 0.35);
}

.btn-outline {
  background: transparent;
  border: 2px solid #FF5A5F;
  color: #FF5A5F;
}

.btn-outline:hover {
  background: #FF5A5F;
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 90, 95, 0.2);
}

/* ===== 标签/标题 ===== */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #FF5A5F;
  margin-bottom: 14px;
  padding: 4px 12px;
  border-left: 4px solid #FF5A5F;
  background: rgba(255, 90, 95, 0.06);
}

.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #1A1E23;
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 48px;
  font-size: 1.05rem;
  line-height: 1.7;
  color: #4A4F54;
}

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

.category-card {
  border-radius: 20px;
  padding: 32px 28px;
  background: #fff;
  border: none;
  box-shadow: 0 4px 20px rgba(45, 52, 54, 0.04);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, #FF5A5F, #FF8C42);
  border-radius: 0 4px 4px 0;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(255, 90, 95, 0.1);
}

.card-icon {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background: linear-gradient(135deg, #FF5A5F15, #FF8C4215);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.6rem;
  color: #FF5A5F;
}

.category-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #1A1E23;
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: #FF5A5F;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
}

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

.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: 20px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(45, 52, 54, 0.06);
  transform: perspective(1000px) rotateY(2deg) rotateX(-1deg);
  transition: transform 0.4s;
}

.feature-image:hover {
  transform: perspective(1000px) rotateY(0) rotateX(0);
}

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

.feature-text h3 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.feature-list {
  list-style: none;
  margin-top: 24px;
}

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.05rem;
  border-bottom: 1px solid rgba(45, 52, 54, 0.05);
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: #FF5A5F;
  font-size: 1.2rem;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 90, 95, 0.08);
}

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

.stat-item {
  padding: 32px 20px;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 4px 20px rgba(45, 52, 54, 0.04);
  border: none;
  transition: transform 0.3s;
}

.stat-item:hover {
  transform: translateY(-4px);
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, #FF5A5F, #FF8C42);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 8px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #4A4F54;
}

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

.content-wall-item {
  border-radius: 20px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 4px 20px rgba(45, 52, 54, 0.04);
  transition: all 0.3s ease;
}

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(255, 90, 95, 0.1);
}

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

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

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

.content-wall-body p {
  opacity: 0.7;
  line-height: 1.6;
}

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

.faq-item {
  border: none;
  border-radius: 16px;
  margin-bottom: 12px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 2px 12px rgba(45, 52, 54, 0.04);
  cursor: pointer;
  transition: box-shadow 0.3s;
}

.faq-item:hover {
  box-shadow: 0 4px 20px rgba(255, 90, 95, 0.06);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #1A1E23;
  font-size: 1.05rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.6rem;
  font-weight: 300;
  color: #FF5A5F;
  transition: transform 0.3s;
}

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

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  opacity: 0.7;
  line-height: 1.7;
}

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

/* ===== CTA横幅 ===== */
.cta-banner {
  padding: 64px 32px;
  text-align: center;
  border-radius: 24px;
  background: linear-gradient(135deg, #FF5A5F, #FF8C42, #FF5A5F);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.06), transparent 60%);
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff !important;
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.cta-banner p {
  color: rgba(255,255,255,0.8);
  max-width: 500px;
  margin: 0 auto 28px;
  font-size: 1.1rem;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #FF5A5F;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.cta-banner .btn-primary:hover {
  background: #fff;
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.15);
}

/* ===== 页脚 ===== */
.site-footer {
  padding: 64px 0 32px;
  background: #1A1E23;
  color: rgba(255,255,255,0.75);
}

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

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

.footer-brand p {
  opacity: 0.6;
  line-height: 1.7;
  max-width: 320px;
  font-size: 0.9rem;
}

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

.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: color 0.2s;
}

.footer-col ul li a:hover {
  color: #FF5A5F;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.5;
}

/* ===== 工具类 ===== */
.text-accent {
  color: #FF5A5F;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  line-height: 1.7;
}

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero h1 { font-size: 2.8rem; }
  .hero .container { flex-direction: column; }
  .hero-image { width: 100%; max-width: 100%; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .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; }
  .menu-toggle { display: flex; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: #FFFAF5;
    padding: 24px;
    gap: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.04);
  }
  .hero h1 { font-size: 2.2rem; }
  .section-title { font-size: 1.8rem; }
  .hero-image { transform: none; }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-buttons { flex-direction: column; gap: 12px; }
  .hero h1 { font-size: 1.8rem; }
  .stat-number { font-size: 2rem; }
  .cta-banner h2 { font-size: 1.6rem; }
}