/* ===== 皇冠品质 · 翡翠暖铜 · Awwwards设计系统 ===== */
:root {
  --cream: #faf7f2;
  --cream-warm: #f3efe8;
  --jade-deep: #1a3c34;
  --jade-mid: #2a5c4f;
  --jade-light: #e8f0ed;
  --copper: #c17f59;
  --copper-light: #d9a88c;
  --copper-pale: #fdf2eb;
  --brown-deep: #2c2416;
  --brown-mid: #5c5244;
  --brown-light: #8a7e6f;
  --white-pure: #ffffff;
  --border-warm: #e8e3da;
  --shadow-warm: rgba(44, 36, 22, 0.08);
  --shadow-warm-lg: rgba(44, 36, 22, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ===== 基础重置 ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  overflow-x: hidden;
  background: var(--cream);
  color: var(--brown-deep);
  line-height: 1.6;
  font-size: 16px;
}

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

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-warm);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 2px 20px var(--shadow-warm);
}

.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: 700;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--brown-deep);
  letter-spacing: -0.01em;
  transition: var(--transition);
}

.logo:hover {
  color: var(--jade-deep);
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: var(--jade-deep);
  color: #f0d9a0;
  font-weight: 800;
  position: relative;
  overflow: hidden;
}

.logo-icon::after {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 4px;
  border: 1.5px solid rgba(240, 217, 160, 0.5);
  pointer-events: none;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--brown-mid);
  padding: 8px 16px;
  border-radius: 24px;
  transition: var(--transition);
  letter-spacing: 0.01em;
  position: relative;
}

.main-nav a:hover {
  color: var(--jade-deep);
  background: var(--jade-light);
}

.nav-cta {
  padding: 9px 22px !important;
  border-radius: 24px !important;
  color: #fff !important;
  font-weight: 600 !important;
  background: var(--copper);
  letter-spacing: 0.02em !important;
  box-shadow: 0 2px 12px rgba(193, 127, 89, 0.3);
  transition: var(--transition) !important;
}

.nav-cta:hover {
  background: #b56e48 !important;
  box-shadow: 0 4px 20px rgba(193, 127, 89, 0.45) !important;
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}

.menu-toggle:hover {
  background: var(--jade-light);
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--brown-deep);
  border-radius: 2px;
  transition: var(--transition);
  position: relative;
}

.menu-toggle span::before,
.menu-toggle span::after {
  content: '';
  position: absolute;
  width: 22px;
  height: 2px;
  background: var(--brown-deep);
  border-radius: 2px;
  transition: var(--transition);
  left: 0;
}

.menu-toggle span::before {
  top: -7px;
}

.menu-toggle span::after {
  top: 7px;
}

/* ===== Hero ===== */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  padding-top: 68px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(193, 127, 89, 0.07) 0%, rgba(193, 127, 89, 0.02) 50%, transparent 70%);
  top: -180px;
  right: -200px;
  pointer-events: none;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26, 60, 52, 0.05) 0%, transparent 70%);
  bottom: -80px;
  left: -100px;
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  max-width: 720px;
  flex: 1;
  min-width: 300px;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 18px;
  background: var(--copper-pale);
  color: var(--copper);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 3.2rem;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--jade-deep);
  font-weight: 800;
  letter-spacing: -0.025em;
}

.hero h1 em {
  font-style: normal;
  color: var(--copper);
  position: relative;
}

.hero h1 em::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 6px;
  background: rgba(193, 127, 89, 0.2);
  border-radius: 3px;
  z-index: -1;
}

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

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

.hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  flex: 0 0 440px;
  max-width: 440px;
  position: relative;
  z-index: 1;
  box-shadow: 0 20px 60px var(--shadow-warm-lg), 0 0 0 1px var(--border-warm);
}

.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: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.btn-primary {
  color: #fff;
  background: var(--jade-deep);
  box-shadow: 0 4px 16px rgba(26, 60, 52, 0.25);
}

.btn-primary:hover {
  background: #15322c;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(26, 60, 52, 0.35);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--jade-deep);
  color: var(--jade-deep);
}

.btn-outline:hover {
  background: var(--jade-deep);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(26, 60, 52, 0.2);
}

/* ===== 标签/标题 ===== */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 3px;
  margin-bottom: 12px;
  color: var(--copper);
  text-transform: uppercase;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 14px;
  color: var(--jade-deep);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 40px;
  color: var(--brown-mid);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ===== 卡片网格 ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.category-card {
  border-radius: var(--radius-md);
  padding: 30px 28px;
  border: 1px solid var(--border-warm);
  transition: var(--transition);
  background: var(--white-pure);
  position: relative;
  cursor: pointer;
}

.category-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  opacity: 0;
  transition: var(--transition);
  background: linear-gradient(160deg, transparent 60%, rgba(193, 127, 89, 0.04) 100%);
  pointer-events: none;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px var(--shadow-warm-lg);
  border-color: var(--copper-light);
}

.category-card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  background: var(--jade-light);
  color: var(--jade-deep);
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--copper);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 8px;
  transition: var(--transition);
}

.card-link:hover {
  color: #a5683f;
  gap: 8px;
}

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

.feature-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  box-shadow: 0 16px 48px var(--shadow-warm-lg);
}

.feature-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 0, 0, 0.04);
  pointer-events: none;
}

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

.feature-text {
  color: var(--brown-deep);
}

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

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.98rem;
  color: var(--brown-mid);
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: var(--jade-deep);
  font-size: 0.85rem;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--jade-light);
  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;
  text-align: center;
}

.stat-item {
  padding: 28px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-warm);
  background: var(--white-pure);
  transition: var(--transition);
}

.stat-item:hover {
  border-color: var(--copper-light);
  box-shadow: 0 8px 24px var(--shadow-warm);
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--jade-deep);
  letter-spacing: -0.02em;
  line-height: 1;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 8px;
  color: var(--brown-mid);
  letter-spacing: 0.02em;
}

/* ===== 内容墙 ===== */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.content-wall-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-warm);
  transition: var(--transition);
  background: var(--white-pure);
}

.content-wall-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px var(--shadow-warm-lg);
  border-color: var(--copper-light);
}

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

.content-wall-body {
  padding: 22px 20px;
  color: var(--brown-deep);
}

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

.faq-item {
  border: 1px solid var(--border-warm);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  overflow: hidden;
  cursor: pointer;
  background: var(--white-pure);
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--copper-light);
}

.faq-item.open {
  border-color: var(--jade-deep);
  box-shadow: 0 4px 16px var(--shadow-warm);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--brown-deep);
  font-size: 0.98rem;
  user-select: none;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--copper);
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 12px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--copper-pale);
}

.faq-item.open .faq-question::after {
  content: '−';
  background: var(--jade-light);
  color: var(--jade-deep);
}

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  opacity: 0.7;
  color: var(--brown-mid);
  line-height: 1.7;
  font-size: 0.93rem;
}

.faq-item.open .faq-answer {
  display: block;
  animation: fadeSlideIn 0.3s ease;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 0.7;
    transform: translateY(0);
  }
}

/* ===== CTA横幅 ===== */
.cta-banner {
  padding: 56px 24px;
  text-align: center;
  border-radius: var(--radius-xl);
  color: #fff;
  background: linear-gradient(145deg, #1a3c34 0%, #2a5c4f 40%, #3d7a63 70%, #c17f59 100%);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
  top: -200px;
  right: -120px;
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.04) 0%, transparent 70%);
  bottom: -100px;
  left: -60px;
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--jade-deep);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
  margin-top: 8px;
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  background: #faf7f2;
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* ===== 页脚 ===== */
.site-footer {
  padding: 56px 0 28px;
  background: var(--jade-deep);
  color: rgba(250, 247, 242, 0.85);
}

.site-footer .container {
  color: inherit;
}

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

.footer-brand {
  color: rgba(250, 247, 242, 0.9);
}

.footer-brand .logo {
  color: #faf7f2;
  margin-bottom: 12px;
}

.footer-brand .logo-icon {
  background: var(--copper);
  color: #fff;
}

.footer-col {
  color: rgba(250, 247, 242, 0.8);
}

.footer-col h4 {
  color: #faf7f2;
  font-weight: 600;
  margin-bottom: 14px;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.footer-col a {
  color: rgba(250, 247, 242, 0.7);
  text-decoration: none;
  font-size: 0.9rem;
  display: block;
  padding: 4px 0;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--copper-light);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(250, 247, 242, 0.12);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(250, 247, 242, 0.55);
}

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

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  color: var(--brown-mid);
  line-height: 1.7;
  font-size: 0.95rem;
}

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

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero {
    flex-direction: column;
    align-items: flex-start;
    min-height: auto;
    padding-top: 100px;
    padding-bottom: 48px;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero h1 {
    font-size: 2.4rem;
  }

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

  .feature-block {
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }

  .hero {
    flex-direction: column;
    min-height: auto;
    padding-top: 96px;
    padding-bottom: 40px;
    gap: 28px;
  }

  .hero h1 {
    font-size: 2rem;
  }

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

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

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

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

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

  .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: rgba(250, 247, 242, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border-warm);
    box-shadow: 0 12px 32px var(--shadow-warm-lg);
    gap: 4px;
    z-index: 999;
  }

  .main-nav.open a {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    width: 100%;
  }

  .main-nav.open .nav-cta {
    text-align: center;
    justify-content: center;
    margin-top: 8px;
  }

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

@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;
    width: 100%;
  }

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

  .hero h1 {
    font-size: 1.7rem;
  }

  .hero-eyebrow {
    font-size: 0.72rem;
    padding: 4px 12px;
  }

  .section-title {
    font-size: 1.45rem;
  }

  .container {
    padding: 0 16px;
  }

  .header-inner {
    padding: 0 16px;
  }

  .stat-number {
    font-size: 1.8rem;
  }

  .cta-banner {
    padding: 40px 16px;
    border-radius: var(--radius-lg);
  }

  .footer-grid {
    gap: 28px;
  }
}