*, *::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: #FFF8F0;
  color: #3D2B1F;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== 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: #FFF3EA;
  position: relative;
}

.section:nth-child(even)::before {
  content: '';
  position: absolute;
  top: 0;
  left: 5%;
  width: 90%;
  height: 3px;
  background: repeating-linear-gradient(
    90deg,
    #E8573A 0px,
    #E8573A 4px,
    transparent 4px,
    transparent 8px
  );
  opacity: 0.5;
  border-radius: 2px;
}

/* ===== 导航 — 固定顶部 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 248, 240, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 2px solid transparent;
  border-image: linear-gradient(90deg, #E8573A, #C8963E, #2B6CB0, #C8963E, #E8573A) 1;
  transition: all 0.3s ease;
}

.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: 1.25rem;
  text-decoration: none;
  color: #3D2B1F;
  letter-spacing: -0.5px;
  transition: transform 0.2s;
}

.logo:hover {
  transform: scale(1.03);
}

.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, #E8573A, #C8963E);
  color: #fff;
  font-weight: 900;
  box-shadow: 0 3px 12px rgba(232, 87, 58, 0.3);
  position: relative;
}

.logo-icon::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 12px;
  border: 2px dashed rgba(232, 87, 58, 0.4);
  animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.08); opacity: 1; }
}

.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: #5C3D2E;
  transition: all 0.25s;
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: #E8573A;
  border-radius: 1px;
  transition: width 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.main-nav a:hover {
  color: #E8573A;
}

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

.nav-cta {
  padding: 10px 22px !important;
  border-radius: 25px !important;
  color: #fff !important;
  font-weight: 700 !important;
  background: linear-gradient(135deg, #E8573A, #C8963E);
  box-shadow: 0 4px 16px rgba(232, 87, 58, 0.35);
  transition: all 0.3s !important;
  letter-spacing: 0.3px;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(232, 87, 58, 0.45);
  color: #fff !important;
}

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

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

.menu-toggle span {
  width: 26px;
  height: 2.5px;
  background: #3D2B1F;
  border-radius: 2px;
  transition: all 0.3s;
}

/* ===== 首页Hero ===== */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding-top: 68px;
  background: linear-gradient(160deg, #FFF8F0 0%, #FFF0E3 40%, #FFE8D5 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 87, 58, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -40px;
  width: 350px;
  height: 350px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43, 108, 176, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

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

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

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 25px;
  margin-bottom: 18px;
  background: rgba(232, 87, 58, 0.1);
  color: #E8573A;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border: 1.5px solid rgba(232, 87, 58, 0.2);
}

.hero-eyebrow::before {
  content: '⚡';
  font-size: 0.9rem;
  animation: zapBounce 1.2s ease-in-out infinite;
}

@keyframes zapBounce {
  0%, 100% { transform: translateY(0); }
  30% { transform: translateY(-4px); }
  60% { transform: translateY(0); }
}

.hero h1 {
  font-size: 3.2rem;
  line-height: 1.15;
  margin-bottom: 20px;
  font-weight: 900;
  letter-spacing: -1px;
  color: #3D2B1F;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, #E8573A, #C8963E);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

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

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

.hero-image {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(232, 87, 58, 0.15), 0 0 0 4px #FFF8F0, 0 0 0 8px rgba(200, 150, 62, 0.3);
  transform: rotate(-2deg);
  transition: transform 0.4s ease;
  position: relative;
}

.hero-image::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(232, 87, 58, 0.2), transparent 60%);
  z-index: 1;
  pointer-events: none;
}

.hero-image:hover {
  transform: rotate(1deg) scale(1.02);
}

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

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 28px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
  font-size: 0.95rem;
  letter-spacing: 0.2px;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #E8573A, #C84C31);
  box-shadow: 0 6px 20px rgba(232, 87, 58, 0.35);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
  transition: left 0.5s;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(232, 87, 58, 0.45);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-outline {
  background: transparent;
  border: 2px solid #E8573A;
  color: #E8573A;
  border-radius: 28px;
}

.btn-outline:hover {
  background: #E8573A;
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(232, 87, 58, 0.25);
}

/* ===== 标签/标题 ===== */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 14px;
  color: #E8573A;
  text-transform: uppercase;
}

.section-label::after {
  content: '';
  display: inline-block;
  width: 28px;
  height: 2px;
  background: #E8573A;
  border-radius: 1px;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 14px;
  font-weight: 900;
  letter-spacing: -0.5px;
  line-height: 1.2;
  color: #3D2B1F;
}

.section-desc {
  max-width: 600px;
  opacity: 0.65;
  margin-bottom: 40px;
  line-height: 1.7;
}

/* ===== 卡片网格 ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 24px;
}

.category-card {
  border-radius: 16px;
  padding: 30px 26px;
  border: 1.5px solid #F0E0D0;
  transition: all 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
  background: #FFFBF7;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #E8573A, #C8963E, #2B6CB0);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
  border-radius: 0 0 4px 4px;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(200, 150, 62, 0.15), 0 0 0 1px rgba(232, 87, 58, 0.1);
  border-color: #E8C8A0;
}

.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: 18px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, rgba(232, 87, 58, 0.12), rgba(200, 150, 62, 0.12));
  color: #E8573A;
  transition: all 0.3s;
}

.category-card:hover .card-icon {
  background: linear-gradient(135deg, #E8573A, #C8963E);
  color: #fff;
  transform: scale(1.08);
  box-shadow: 0 8px 24px rgba(232, 87, 58, 0.3);
}

.category-card h3 {
  font-weight: 700;
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: #3D2B1F;
}

.category-card p {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-bottom: 14px;
  line-height: 1.6;
}

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: #E8573A;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s;
}

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

.card-link:hover {
  gap: 12px;
}

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

/* ===== 特性块 ===== */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.feature-image {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(200, 150, 62, 0.2);
  position: relative;
  border: 3px solid #FFF;
  transition: transform 0.4s ease;
}

.feature-image::after {
  content: '';
  position: absolute;
  inset: 8px;
  border-radius: 14px;
  border: 1.5px dashed rgba(232, 87, 58, 0.3);
  pointer-events: none;
  z-index: 1;
}

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

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

.feature-text h3 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: #3D2B1F;
}

.feature-text p {
  opacity: 0.65;
  margin-bottom: 20px;
  line-height: 1.7;
}

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

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  font-size: 0.95rem;
}

.feature-list li::before {
  content: '✓';
  font-weight: 800;
  color: #E8573A;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(232, 87, 58, 0.1);
  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: 30px 20px;
  border-radius: 16px;
  border: 1.5px solid #F0E0D0;
  background: #FFFBF7;
  transition: all 0.3s;
  position: relative;
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(200, 150, 62, 0.15);
  border-color: #E8C8A0;
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 900;
  background: linear-gradient(135deg, #E8573A, #C8963E);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.55;
  margin-top: 8px;
  font-weight: 500;
  letter-spacing: 0.5px;
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 30%;
  width: 40%;
  height: 3px;
  background: linear-gradient(90deg, transparent, #E8573A, transparent);
  border-radius: 2px;
  opacity: 0;
  transition: opacity 0.3s;
}

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

/* ===== 内容墙 ===== */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 24px;
}

.content-wall-item {
  border-radius: 16px;
  overflow: hidden;
  border: 1.5px solid #F0E0D0;
  transition: all 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
  background: #FFFBF7;
}

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(200, 150, 62, 0.15);
  border-color: #E8C8A0;
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s;
}

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

.content-wall-body {
  padding: 22px;
}

.content-wall-body h4 {
  font-weight: 700;
  margin-bottom: 6px;
  color: #3D2B1F;
}

.content-wall-body p {
  font-size: 0.88rem;
  opacity: 0.6;
  line-height: 1.5;
}

.content-wall-body .card-link {
  margin-top: 8px;
}

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

.faq-item {
  border: 1.5px solid #F0E0D0;
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: #FFFBF7;
  transition: all 0.3s;
}

.faq-item:hover {
  border-color: #E8C8A0;
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #3D2B1F;
  font-size: 0.98rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 400;
  color: #E8573A;
  transition: transform 0.3s;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(232, 87, 58, 0.08);
  flex-shrink: 0;
}

.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(180deg);
  background: rgba(232, 87, 58, 0.15);
}

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  opacity: 0.7;
  line-height: 1.7;
  font-size: 0.9rem;
}

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

/* ===== CTA横幅 ===== */
.cta-banner {
  padding: 60px 24px;
  text-align: center;
  border-radius: 20px;
  color: #fff;
  background: linear-gradient(135deg, #E8573A, #C84C31, #B33A22);
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(232, 87, 58, 0.3);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
  pointer-events: none;
}

.cta-banner .container {
  position: relative;
  z-index: 1;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 10px;
  letter-spacing: -0.5px;
}

.cta-banner p {
  color: rgba(255,255,255,0.8);
  margin-bottom: 28px;
  font-size: 1.05rem;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #E8573A;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.cta-banner .btn-primary:hover {
  background: #FFF8F0;
  box-shadow: 0 12px 32px rgba(0,0,0,0.2);
  transform: translateY(-3px);
}

/* ===== 页脚 ===== */
.site-footer {
  padding: 56px 0 28px;
  background: #3D2B1F;
  color: rgba(255, 248, 240, 0.85);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 5%;
  width: 90%;
  height: 3px;
  background: linear-gradient(90deg, transparent, #E8573A, #C8963E, #E8573A, transparent);
  border-radius: 2px;
}

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

.footer-brand h3 {
  color: #FFF8F0;
  font-weight: 800;
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.footer-brand p {
  opacity: 0.6;
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-col h4 {
  color: #FFF8F0;
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

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

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

.footer-col ul li a {
  color: rgba(255, 248, 240, 0.6);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.25s;
}

.footer-col ul li a:hover {
  color: #E8573A;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 248, 240, 0.08);
  margin-top: 40px;
  padding-top: 22px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.5;
  letter-spacing: 0.3px;
}

/* ===== 工具类 ===== */
.text-accent {
  color: #E8573A;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.65;
  text-align: center;
  line-height: 1.7;
}

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

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

/* ===== 装饰性擂台绳索线条 ===== */
.section:nth-child(odd)::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 10%;
  width: 80%;
  height: 2px;
  background: repeating-linear-gradient(
    90deg,
    transparent 0px,
    transparent 20px,
    rgba(200, 150, 62, 0.2) 20px,
    rgba(200, 150, 62, 0.2) 24px
  );
  pointer-events: none;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero {
    min-height: auto;
    padding: 100px 0 60px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-image {
    transform: none;
    max-width: 400px;
    margin: 0 auto;
  }

  .hero-image:hover {
    transform: none;
  }

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

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

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

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

  .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: #FFFBF7;
    padding: 24px;
    gap: 16px;
    border-bottom: 2px solid #F0E0D0;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
  }

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

  .nav-cta {
    text-align: center;
    display: block;
    width: fit-content;
  }
}

@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;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .section {
    padding: 50px 0;
  }

  .cta-banner {
    padding: 40px 20px;
    border-radius: 14px;
  }

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

  .stats-bar {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

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

  .btn {
    padding: 12px 24px;
    font-size: 0.9rem;
    justify-content: center;
  }
}