@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700;900&display=swap');

:root {
  --bg-main: #FFF9F2;
  --bg-warm: #FFF0E8;
  --accent: #FF6B4A;
  --accent-light: #FF8E53;
  --accent-dark: #E85D3F;
  --gold: #FFD93D;
  --ink: #2D3436;
  --card-bg: #FFFFFF;
  --border-warm: #F0E6DF;
  --shadow-warm: 0 8px 30px rgba(255, 107, 74, 0.12);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
}

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

html {
  scroll-behavior: smooth;
}

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

::selection {
  background: var(--accent);
  color: #fff;
}

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

a {
  color: inherit;
}

/* ========== 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(--bg-warm);
}

/* ========== 导航 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 249, 242, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(240, 230, 223, 0.8);
}

.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: 10px;
  font-weight: 900;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  color: #fff;
  box-shadow: 0 4px 14px rgba(255, 107, 74, 0.35);
  font-weight: 900;
}

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

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

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--gold));
  border-radius: 2px;
  transition: width 0.35s cubic-bezier(0.65, 0, 0.35, 1);
  opacity: 0.8;
}

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

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

.nav-cta {
  padding: 10px 28px;
  border-radius: 50px;
  color: #fff !important;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  box-shadow: 0 4px 14px rgba(255, 107, 74, 0.35);
  transition: transform 0.3s, box-shadow 0.3s;
}

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

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 107, 74, 0.45);
  color: #fff !important;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--ink);
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  transition: background 0.2s;
  line-height: 1;
}

.menu-toggle:hover {
  background: var(--bg-warm);
}

/* ========== Hero ========== */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 48px;
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -180px;
  right: -100px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 217, 61, 0.35), rgba(255, 217, 61, 0) 70%);
  z-index: 0;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: 5%;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 74, 0.2), rgba(255, 107, 74, 0) 70%);
  z-index: 0;
  pointer-events: none;
}

.hero-content {
  max-width: 620px;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 8px 22px;
  border-radius: 50px;
  background: var(--gold);
  color: var(--ink);
  margin-bottom: 20px;
  letter-spacing: 1px;
  box-shadow: 0 4px 14px rgba(255, 217, 61, 0.4);
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.2rem);
  line-height: 1.15;
  margin-bottom: 24px;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.hero h1 span {
  background: linear-gradient(120deg, var(--accent), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.75;
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.7;
}

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

.hero-image {
  flex: 1;
  min-width: 300px;
  max-width: 460px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  transform: rotate(1.5deg);
  box-shadow: 0 20px 60px rgba(255, 107, 74, 0.15);
  transition: transform 0.4s ease;
}

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

.hero-image::after {
  content: '';
  position: absolute;
  inset: 18px;
  border: 2px dashed rgba(255, 107, 74, 0.4);
  border-radius: 16px;
  pointer-events: none;
  z-index: 1;
}

.hero-image img {
  width: 100%;
  height: 100%;
  min-height: 300px;
  object-fit: cover;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.65, 0, 0.35, 1);
  letter-spacing: 0.01em;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff;
  box-shadow: 0 4px 18px rgba(255, 107, 74, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(255, 107, 74, 0.45);
}

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

.btn-outline:hover {
  background: var(--ink);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(45, 52, 54, 0.15);
}

/* ========== 标签 / 标题 ========== */
.section-label {
  display: inline-flex;
  align-items: center;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 16px;
  color: var(--accent);
  gap: 10px;
}

.section-label::before {
  content: '';
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 16px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--ink);
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 44px;
  line-height: 1.7;
  font-size: 1rem;
}

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

.category-card {
  background: var(--card-bg);
  border-radius: 20px;
  padding: 32px 28px;
  border: 1px solid var(--border-warm);
  transition: all 0.35s cubic-bezier(0.65, 0, 0.35, 1);
  box-shadow: 0 2px 10px rgba(45, 52, 54, 0.04);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--gold));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
  border-radius: 0 0 4px 4px;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 36px rgba(255, 107, 74, 0.12);
  border-color: transparent;
}

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

.category-card:nth-child(even) {
  transform: rotate(0.6deg);
}

.category-card:nth-child(even):hover {
  transform: translateY(-6px) rotate(0deg);
}

.category-card:nth-child(odd) {
  transform: rotate(-0.4deg);
}

.category-card:nth-child(odd):hover {
  transform: translateY(-6px) rotate(0deg);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, #FFF0E8, #FFE0D0);
  transition: transform 0.3s;
}

.category-card:hover .card-icon {
  transform: scale(1.1) rotate(-8deg);
}

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  transition: gap 0.2s;
}

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

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

.card-link:hover {
  gap: 9px;
}

/* ========== 特性块 ========== */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.feature-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(45, 52, 54, 0.08);
  position: relative;
}

.feature-image::after {
  content: '▶';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(4px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--accent);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
}

.feature-image:hover::after {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.05);
}

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

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

.feature-list {
  list-style: none;
  margin-top: 16px;
}

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  font-size: 0.95rem;
  line-height: 1.5;
}

.feature-list li::before {
  content: '✓';
  font-weight: 900;
  color: var(--accent);
  background: #FFF0E8;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  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: 36px 24px;
  border-radius: 20px;
  border: 1px solid var(--border-warm);
  background: #fff;
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--gold));
  border-radius: 3px 3px 0 0;
  transition: width 0.4s;
}

.stat-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(255, 107, 74, 0.1);
}

.stat-item:hover::after {
  width: 60%;
}

.stat-number {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 900;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 10px;
  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 var(--border-warm);
  background: #fff;
  transition: all 0.35s cubic-bezier(0.65, 0, 0.35, 1);
  box-shadow: 0 2px 10px rgba(45, 52, 54, 0.04);
}

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 36px rgba(255, 107, 74, 0.14);
  border-color: transparent;
}

.content-wall-item:nth-child(even) {
  transform: rotate(0.4deg);
}

.content-wall-item:nth-child(even):hover {
  transform: translateY(-6px) rotate(0deg);
}

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

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

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

.content-wall-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
  color: var(--ink);
}

.content-wall-body p {
  font-size: 0.9rem;
  opacity: 0.6;
  line-height: 1.5;
}

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

.faq-item {
  border: 1px solid var(--border-warm);
  border-radius: 16px;
  margin-bottom: 14px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.faq-item.open {
  border-color: var(--accent);
  box-shadow: 0 6px 24px rgba(255, 107, 74, 0.08);
}

.faq-item .faq-question {
  padding: 22px 56px 22px 24px;
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
  position: relative;
  line-height: 1.4;
  transition: color 0.3s;
}

.faq-item.open .faq-question {
  color: var(--accent);
}

.faq-item .faq-question::before,
.faq-item .faq-question::after {
  content: '';
  position: absolute;
  right: 26px;
  top: 50%;
  width: 14px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: transform 0.35s, opacity 0.35s;
}

.faq-item .faq-question::before {
  transform: translateY(-50%);
}

.faq-item .faq-question::after {
  transform: translateY(-50%) rotate(90deg);
}

.faq-item.open .faq-question::after {
  transform: translateY(-50%) rotate(0deg);
}

.faq-item.open .faq-question::before {
  opacity: 0;
}

.faq-item .faq-answer {
  padding: 0 24px 22px;
  display: none;
  opacity: 0.75;
  line-height: 1.7;
  font-size: 0.95rem;
  animation: fadeInDown 0.3s ease;
}

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

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== CTA 横幅 ========== */
.cta-banner {
  padding: 72px 24px;
  text-align: center;
  border-radius: 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light) 50%, var(--gold));
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(255, 107, 74, 0.3);
}

.cta-banner::before {
  content: '▶';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 220px;
  opacity: 0.1;
  color: #fff;
  line-height: 1;
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  pointer-events: none;
}

.cta-banner h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: #fff;
}

.cta-banner p {
  position: relative;
  z-index: 1;
  opacity: 0.95;
  margin-bottom: 28px;
  font-size: 1.05rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.cta-banner .btn {
  background: #fff;
  color: var(--accent);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
  position: relative;
  z-index: 1;
}

.cta-banner .btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
}

/* ========== 页脚 ========== */
.site-footer {
  padding: 72px 0 28px;
  background: var(--bg-warm);
  border-top: 1px solid var(--border-warm);
  position: relative;
}

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

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

.footer-brand p {
  opacity: 0.65;
  font-size: 0.92rem;
  max-width: 280px;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.footer-col a {
  display: block;
  color: var(--ink);
  opacity: 0.6;
  text-decoration: none;
  padding: 5px 0;
  font-size: 0.9rem;
  transition: opacity 0.2s, color 0.2s, transform 0.2s;
}

.footer-col a:hover {
  opacity: 1;
  color: var(--accent);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid rgba(45, 52, 54, 0.1);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink);
  opacity: 0.55;
  line-height: 1.5;
}

/* ========== 工具类 ========== */
.text-accent {
  color: var(--accent);
}

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

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

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

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

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

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

  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(255, 249, 242, 0.98);
    padding: 24px;
    flex-direction: column;
    gap: 18px;
    border-bottom: 2px solid var(--border-warm);
    box-shadow: 0 24px 40px rgba(45, 52, 54, 0.08);
    backdrop-filter: blur(20px);
  }

  .menu-toggle {
    display: flex;
  }

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

  .hero {
    flex-direction: column;
    padding-top: 110px;
    gap: 40px;
  }

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

  .hero-image {
    max-width: 100%;
    transform: rotate(0deg);
  }

  .hero-image:hover {
    transform: scale(1.01);
  }

  .cta-banner {
    padding: 48px 20px;
    border-radius: 24px;
  }

  .cta-banner::before {
    font-size: 120px;
  }
}

@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: stretch;
  }

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

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

  .section {
    padding: 56px 0;
  }

  .header-inner {
    height: 64px;
  }

  .main-nav {
    top: 64px;
  }

  .logo {
    font-size: 1.1rem;
  }

  .btn {
    padding: 13px 24px;
  }
}