*, *::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: #FFF9F2;
  color: #1C1C1C;
  line-height: 1.6;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 197, 61, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 65%, rgba(0, 184, 169, 0.06) 0%, transparent 45%),
    radial-gradient(circle at 50% 100%, rgba(255, 107, 94, 0.05) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
}

::selection {
  background: #FF6B5E;
  color: #fff;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

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

.section:nth-child(even) {
  background: #FFF4E8;
}

.section:nth-child(even)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(255, 197, 61, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 250, 244, 0.92);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: box-shadow 0.3s;
}

.site-header:hover {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.25rem;
  text-decoration: none;
  color: #1C1C1C;
  letter-spacing: -0.02em;
}

.logo:hover {
  transform: translateY(-1px);
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: linear-gradient(135deg, #FF6B5E, #FF8A5C);
  color: #fff;
  box-shadow: 0 4px 14px rgba(255, 107, 94, 0.3);
}

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

.main-nav li {
  position: relative;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: #1C1C1C;
  transition: all 0.3s;
  position: relative;
  padding: 4px 0;
}

.main-nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #FF6B5E, #FFC53D);
  border-radius: 2px;
  transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-nav a:not(.nav-cta):hover::after {
  width: 100%;
}

.main-nav a:not(.nav-cta):hover {
  color: #FF6B5E;
}

.nav-cta {
  padding: 10px 24px;
  border-radius: 12px;
  color: #fff !important;
  font-weight: 600;
  background: linear-gradient(135deg, #FF6B5E, #FF8A5C);
  box-shadow: 0 4px 16px rgba(255, 107, 94, 0.25);
  transition: all 0.3s !important;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 107, 94, 0.35);
}

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

.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: 24px;
  height: 2.5px;
  background: #1C1C1C;
  border-radius: 2px;
  transition: all 0.3s;
}

/* ===== Hero ===== */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 0 80px;
  background:
    radial-gradient(circle at 75% 30%, rgba(255, 197, 61, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 20% 80%, rgba(0, 184, 169, 0.08) 0%, transparent 35%);
}

.hero::before {
  content: '';
  position: absolute;
  top: 15%;
  right: 8%;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 3px dashed rgba(255, 107, 94, 0.25);
  animation: spin 30s linear infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 12%;
  right: 20%;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, rgba(0, 184, 169, 0.2), rgba(255, 197, 61, 0.2));
  border-radius: 24px;
  transform: rotate(30deg);
  pointer-events: none;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 20px;
  background: rgba(0, 184, 169, 0.1);
  color: #00A89A;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid rgba(0, 184, 169, 0.2);
}

.hero h1 {
  font-size: 3.2rem;
  line-height: 1.15;
  margin-bottom: 20px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.hero h1 .highlight {
  display: inline-block;
  background: linear-gradient(120deg, transparent 0%, transparent 10%, rgba(255, 197, 61, 0.4) 10%, rgba(255, 197, 61, 0.4) 90%, transparent 90%);
  border-radius: 4px;
  padding: 0 4px;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.65;
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.7;
}

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

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 14px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 0.95rem;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.2) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.4s;
}

.btn:hover::after {
  transform: translateX(100%);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #FF6B5E, #FF8A5C);
  box-shadow: 0 4px 20px rgba(255, 107, 94, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(255, 107, 94, 0.4);
}

.btn-outline {
  background: transparent;
  border: 2px solid #1C1C1C;
  color: #1C1C1C;
}

.btn-outline:hover {
  background: #1C1C1C;
  color: #fff;
  transform: translateY(-3px);
  border-color: #1C1C1C;
}

/* ===== 标签/标题 ===== */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 12px;
  color: #FF6B5E;
  text-transform: uppercase;
  position: relative;
  padding-left: 16px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 2px;
  background: #FF6B5E;
  border-radius: 2px;
}

.section-title {
  font-size: 2.4rem;
  margin-bottom: 16px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section-desc {
  max-width: 600px;
  opacity: 0.65;
  margin-bottom: 44px;
  line-height: 1.7;
  font-size: 1.05rem;
}

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

.category-card {
  border-radius: 20px;
  padding: 32px 28px;
  border: 1px solid rgba(0, 0, 0, 0.05);
  background: #fff;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #FF6B5E, #FFC53D);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(255, 107, 94, 0.12);
  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: 18px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, rgba(255, 107, 94, 0.12), rgba(255, 197, 61, 0.12));
  transition: all 0.3s;
}

.category-card:hover .card-icon {
  background: linear-gradient(135deg, #FF6B5E, #FF8A5C);
  color: #fff;
  box-shadow: 0 4px 14px rgba(255, 107, 94, 0.3);
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: #FF6B5E;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.3s;
}

.card-link:hover {
  gap: 10px;
}

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

.feature-image {
  border-radius: 24px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 16px 48px rgba(0, 184, 169, 0.12);
}

.feature-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 184, 169, 0.05), transparent 50%);
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s;
}

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

.feature-text {
  position: relative;
}

.feature-text .section-label {
  color: #00B8A9;
}

.feature-text .section-label::before {
  background: #00B8A9;
}

.feature-list {
  list-style: none;
  margin-top: 12px;
}

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  opacity: 0.85;
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: #00B8A9;
  font-size: 0.9rem;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(0, 184, 169, 0.1);
  flex-shrink: 0;
}

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

.stat-item {
  padding: 32px 24px;
  border-radius: 20px;
  border: 1px solid rgba(0, 0, 0, 0.04);
  background: #fff;
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
}

.stat-item::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 60%;
  height: 3px;
  background: linear-gradient(90deg, #FF6B5E, #FFC53D);
  border-radius: 3px;
  transition: transform 0.4s;
}

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

.stat-number {
  font-size: 2.6rem;
  font-weight: 900;
  color: #FF6B5E;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.stat-number small {
  font-size: 1rem;
  color: #FFC53D;
  font-weight: 700;
}

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

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

.content-wall-item {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.04);
  background: #fff;
  transition: all 0.4s;
  position: relative;
}

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(255, 107, 94, 0.1);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.6s;
}

.content-wall-item:hover img {
  transform: scale(1.05);
}

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

.content-wall-body h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  font-weight: 700;
}

.content-wall-body p {
  font-size: 0.85rem;
  opacity: 0.6;
  line-height: 1.5;
}

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

.faq-item {
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 16px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  transition: all 0.3s;
}

.faq-item:hover {
  border-color: rgba(255, 107, 94, 0.2);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.95rem;
  color: #1C1C1C;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  color: #FF6B5E;
  transition: transform 0.3s;
  font-weight: 400;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
  color: #00B8A9;
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  opacity: 0.6;
  font-size: 0.9rem;
  line-height: 1.7;
}

.faq-item.open {
  border-color: rgba(0, 184, 169, 0.2);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

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

/* ===== CTA横幅 ===== */
.cta-banner {
  padding: 64px 48px;
  text-align: center;
  border-radius: 28px;
  color: #fff;
  background: linear-gradient(135deg, #FF6B5E 0%, #FF8A5C 50%, #FFB86B 100%);
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(255, 107, 94, 0.3);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 200px;
  height: 200px;
  border: 3px dashed rgba(255,255,255,0.2);
  border-radius: 50%;
}

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

.cta-banner p {
  color: rgba(255,255,255,0.85);
  margin-bottom: 28px;
  font-size: 1.05rem;
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #FF6B5E;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

/* ===== 页脚 ===== */
.site-footer {
  padding: 64px 0 32px;
  background: #FFF4E8;
  border-top: 1px solid rgba(0, 0, 0, 0.04);
  position: relative;
}

.site-footer .container {
  position: relative;
  z-index: 1;
}

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

.footer-brand {
  font-weight: 700;
  font-size: 1.2rem;
}

.footer-brand .logo-icon {
  display: inline-flex;
  margin-right: 8px;
}

.footer-brand p {
  margin-top: 12px;
  font-size: 0.85rem;
  opacity: 0.55;
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #FF6B5E;
}

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

.footer-col ul li {
  padding: 4px 0;
}

.footer-col ul a {
  text-decoration: none;
  font-size: 0.85rem;
  opacity: 0.65;
  transition: opacity 0.3s, color 0.3s;
  color: #1C1C1C;
}

.footer-col ul a:hover {
  opacity: 1;
  color: #FF6B5E;
}

.footer-bottom {
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  margin-top: 44px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.45;
}

/* ===== 工具类 ===== */
.text-accent {
  color: #FF6B5E;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.6;
  line-height: 1.7;
}

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

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .hero {
    padding: 100px 0 60px;
    min-height: auto;
  }

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

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

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

  .feature-text {
    order: 1;
  }

  .feature-image {
    order: 0;
  }

  .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: 72px;
    left: 0;
    width: 100%;
    background: rgba(255, 250, 244, 0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
  }

  .main-nav.open li {
    width: 100%;
  }

  .main-nav.open a {
    display: block;
    padding: 10px 0;
    font-size: 1rem;
  }

  .nav-cta {
    text-align: center;
    width: 100%;
  }

  .section {
    padding: 72px 0;
  }

  .section-title {
    font-size: 1.8rem;
  }

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

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

  .cta-banner {
    padding: 44px 24px;
  }

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

  .btn {
    padding: 12px 24px;
  }
}

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

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

  .hero::before {
    width: 120px;
    height: 120px;
  }

  .hero::after {
    display: none;
  }

  .hero h1 {
    font-size: 1.9rem;
  }

  .hero-eyebrow {
    font-size: 0.7rem;
    padding: 4px 14px;
  }

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

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

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