:root {
  --bg: #FAF7F0;
  --bg-alt: #F2EEE4;
  --ink: #26231D;
  --muted: rgba(38, 35, 29, 0.64);
  --line: rgba(38, 35, 29, 0.18);
  --accent: #F4583C;
  --accent-soft: rgba(244, 88, 60, 0.12);
  --teal: #0E9D8C;
  --amber: #EBA332;
  --card-bg: #FFFFFF;
  --border: 2.5px solid #26231D;
  --shadow: 6px 6px 0 rgba(38, 35, 29, 0.14);
  --shadow-sm: 3px 3px 0 rgba(38, 35, 29, 0.14);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background-color: var(--bg);
  background-image: radial-gradient(rgba(38, 35, 29, 0.055) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--ink);
  line-height: 1.6;
  padding-top: 68px;
}

a {
  color: inherit;
}

button {
  font-family: inherit;
}

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

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

.section {
  padding: 96px 0;
}

.section:nth-child(even) {
  background: var(--bg-alt);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(250, 247, 240, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: var(--border);
}

.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: 900;
  font-size: 1.3rem;
  text-decoration: none;
  color: inherit;
  letter-spacing: -0.02em;
}

.logo::first-letter {
  color: var(--accent);
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 900;
  background: var(--accent);
  color: var(--bg);
  border: 2px solid var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 4px 2px;
  border-bottom: 2px solid transparent;
  color: var(--ink);
  transition: border-color 0.2s, color 0.2s, transform 0.2s;
}

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

.main-nav a.nav-cta {
  background: var(--accent);
  color: var(--bg);
  border: var(--border);
  border-radius: 4px;
  padding: 8px 20px;
  font-weight: 800;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.main-nav a.nav-cta:hover {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--accent);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  background: var(--bg);
  border: var(--border);
  border-radius: 4px;
  font-size: 1.25rem;
  color: var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  appearance: none;
  -webkit-appearance: none;
}

.menu-toggle:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(244, 88, 60, 0.35), 3px 3px 0 var(--ink);
}

.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  gap: 56px;
  position: relative;
  padding: 72px 0 88px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 12%;
  right: 6%;
  width: 22px;
  height: 22px;
  background: var(--amber);
  border: 2px solid var(--ink);
  border-radius: 4px;
  transform: rotate(14deg);
  z-index: 1;
  pointer-events: none;
}

.hero > .container {
  display: flex;
  align-items: center;
  gap: 56px;
  flex-wrap: wrap;
  width: 100%;
}

.hero-content {
  flex: 1.2 1 0;
  max-width: 680px;
  position: relative;
}

.hero-content::after {
  content: 'e';
  position: absolute;
  top: -64px;
  right: 0;
  font-size: 180px;
  font-weight: 900;
  line-height: 1;
  color: rgba(244, 88, 60, 0.07);
  letter-spacing: -0.08em;
  pointer-events: none;
  z-index: 0;
}

.hero-content > * {
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 6px 16px;
  border-radius: 4px;
  margin-bottom: 20px;
  background: var(--accent);
  color: var(--bg);
  border: 2px solid var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 4.1rem);
  line-height: 1.08;
  margin-bottom: 24px;
  font-weight: 900;
  letter-spacing: -0.035em;
}

.hero p {
  font-size: 1.12rem;
  opacity: 0.68;
  max-width: 540px;
  margin-bottom: 36px;
  line-height: 1.75;
}

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

.hero-image {
  flex: 1 1 0;
  max-width: 480px;
  position: relative;
  border-radius: 4px;
}

.hero-image img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px;
  border: var(--border);
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow);
}

.hero-image::after {
  content: '';
  position: absolute;
  top: 14px;
  left: 14px;
  width: 100%;
  height: 100%;
  border: var(--border);
  border-radius: 4px;
  z-index: 0;
  border-color: var(--teal);
}

.hero-image::before {
  content: '';
  position: absolute;
  top: -14px;
  right: -14px;
  width: 40px;
  height: 40px;
  background: var(--amber);
  border: var(--border);
  border-radius: 50%;
  z-index: 2;
  box-shadow: 2px 2px 0 var(--ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 4px;
  font-weight: 800;
  font-size: 0.95rem;
  cursor: pointer;
  border: var(--border);
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s, color 0.15s;
}

.btn-primary {
  color: var(--bg);
  background: var(--ink);
  box-shadow: 4px 4px 0 var(--accent);
}

.btn-primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--accent);
}

.btn-primary:active {
  transform: translate(2px, 2px);
  box-shadow: 0 0 0 var(--accent);
}

.btn-outline {
  background: transparent;
  border: 2.5px solid var(--ink);
  color: var(--ink);
  box-shadow: 4px 4px 0 transparent;
}

.btn-outline:hover {
  background: var(--teal);
  color: var(--bg);
  border-color: var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  transform: translate(-1px, -1px);
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 3px;
  margin-bottom: 16px;
  text-transform: uppercase;
  background: var(--amber);
  color: var(--ink);
  padding: 5px 14px;
  border: 2px solid var(--ink);
  border-radius: 4px;
  box-shadow: 2px 2px 0 var(--ink);
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-bottom: 16px;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.section-title::after {
  content: '';
  display: block;
  width: 44px;
  height: 4px;
  background: var(--accent);
  margin-top: 12px;
  border-radius: 2px;
}

.text-center .section-title::after {
  margin-left: auto;
  margin-right: auto;
}

.section-desc {
  max-width: 620px;
  opacity: 0.68;
  margin-bottom: 48px;
  font-size: 1.05rem;
  line-height: 1.75;
}

.text-center .section-desc {
  margin-left: auto;
  margin-right: auto;
}

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

.category-card {
  border-radius: 4px;
  padding: 30px 28px;
  border: var(--border);
  background: var(--card-bg);
  box-shadow: 5px 5px 0 rgba(38, 35, 29, 0.12);
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
  position: relative;
}

.category-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 8px 8px 0 var(--teal);
}

.category-card:nth-child(even):hover {
  box-shadow: 8px 8px 0 var(--amber);
}

.category-card:nth-child(3n):hover {
  box-shadow: 8px 8px 0 var(--accent);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.3rem;
  color: var(--bg);
  background: var(--accent);
  border: 2px solid var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
}

.category-card:nth-child(even) .card-icon {
  background: var(--teal);
}

.category-card:nth-child(3n) .card-icon {
  background: var(--amber);
  color: var(--ink);
}

.card-link {
  font-weight: 800;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.card-link::after {
  content: '→';
  font-size: 1rem;
  transition: transform 0.2s;
}

.category-card:hover .card-link::after {
  transform: translateX(5px);
}

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

.feature-image {
  position: relative;
  border-radius: 4px;
}

.feature-image img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px;
  border: var(--border);
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow);
}

.feature-image::after {
  content: '';
  position: absolute;
  top: 16px;
  left: 16px;
  width: 100%;
  height: 100%;
  border: var(--border);
  border-radius: 4px;
  z-index: 0;
  border-color: var(--amber);
}

.feature-text {
  font-size: 1.05rem;
  line-height: 1.8;
}

.feature-text p {
  opacity: 0.7;
  margin-bottom: 16px;
}

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

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  border-bottom: 1px solid var(--line);
}

.feature-list li::before {
  content: '✓';
  font-weight: 900;
  color: var(--teal);
  background: rgba(14, 157, 140, 0.1);
  border: 2px solid var(--teal);
  width: 26px;
  height: 26px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  text-align: center;
}

.stat-item {
  padding: 32px 20px;
  border-radius: 4px;
  border: var(--border);
  background: var(--card-bg);
  box-shadow: 4px 4px 0 rgba(38, 35, 29, 0.1);
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 7px 7px 0 rgba(38, 35, 29, 0.12);
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: -2.5px;
  left: 24px;
  width: 34px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
}

.stat-item:nth-child(2)::after {
  background: var(--teal);
}

.stat-item:nth-child(3)::after {
  background: var(--amber);
}

.stat-number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 1;
  color: var(--accent);
}

.stat-item:nth-child(2) .stat-number {
  color: var(--teal);
}

.stat-item:nth-child(3) .stat-number {
  color: var(--amber);
}

.stat-item:nth-child(4) .stat-number {
  color: var(--ink);
}

.stat-label {
  font-size: 0.78rem;
  opacity: 0.6;
  margin-top: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 26px;
}

.content-wall-item {
  border-radius: 4px;
  overflow: hidden;
  border: var(--border);
  background: var(--card-bg);
  box-shadow: 4px 4px 0 rgba(38, 35, 29, 0.1);
  transition: transform 0.2s, box-shadow 0.2s;
}

.content-wall-item:hover {
  transform: translate(-3px, -3px);
  box-shadow: 7px 7px 0 var(--accent);
}

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

.content-wall-body {
  padding: 20px;
}

.content-wall-body h3,
.content-wall-body h4 {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 6px;
  line-height: 1.4;
}

.content-wall-body p {
  font-size: 0.9rem;
  opacity: 0.66;
  line-height: 1.6;
}

.content-wall-body::after {
  content: '→';
  display: block;
  text-align: right;
  font-weight: 900;
  color: var(--accent);
  font-size: 1.3rem;
  margin-top: 10px;
  transition: transform 0.2s;
}

.content-wall-item:hover .content-wall-body::after {
  transform: translateX(6px);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: var(--border);
  border-radius: 4px;
  margin-bottom: 14px;
  background: var(--card-bg);
  box-shadow: 3px 3px 0 rgba(38, 35, 29, 0.08);
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow 0.2s, transform 0.2s;
}

.faq-item.open {
  box-shadow: 5px 5px 0 rgba(38, 35, 29, 0.14);
}

.faq-item .faq-question {
  padding: 18px 24px;
  font-weight: 800;
  font-size: 1.05rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--accent);
  line-height: 1;
  transition: transform 0.3s;
}

.faq-item.open .faq-question::after {
  content: '−';
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  opacity: 0.7;
  font-size: 0.95rem;
  line-height: 1.7;
}

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

.cta-banner {
  padding: 72px 32px;
  text-align: center;
  border-radius: 4px;
  position: relative;
  background:
    radial-gradient(rgba(255, 255, 255, 0.2) 1.5px, transparent 1.5px),
    linear-gradient(135deg, #F4583C 0%, #EBA332 100%);
  background-size: 22px 22px, cover;
  border: var(--border);
  box-shadow: 8px 8px 0 rgba(38, 35, 29, 0.14);
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -30px;
  width: 130px;
  height: 130px;
  background: rgba(250, 247, 240, 0.16);
  border: var(--border);
  border-radius: 50%;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -48px;
  left: -24px;
  width: 96px;
  height: 96px;
  background: rgba(14, 157, 140, 0.28);
  border: var(--border);
  border-radius: 50%;
}

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

.cta-banner h2 {
  color: var(--bg);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.cta-banner p {
  color: rgba(250, 247, 240, 0.9);
  font-size: 1.05rem;
  max-width: 520px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.cta-banner .btn-primary {
  background: var(--bg);
  color: var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
}

.cta-banner .btn-primary:hover {
  background: var(--ink);
  color: var(--bg);
  box-shadow: 6px 6px 0 rgba(38, 35, 29, 0.5);
  transform: translate(-2px, -2px);
}

.site-footer {
  padding: 64px 0 28px;
  background: var(--bg-alt);
  border-top: var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 44px;
}

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

.footer-brand p {
  opacity: 0.7;
  font-size: 0.9rem;
  margin-top: 12px;
  max-width: 260px;
  line-height: 1.65;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: inline-block;
  position: relative;
}

.footer-col h4::after {
  content: '';
  display: block;
  width: 24px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin-top: 8px;
}

.footer-col a {
  display: block;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.9rem;
  padding: 5px 0;
  font-weight: 500;
  transition: color 0.2s, transform 0.2s;
}

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

.footer-bottom {
  border-top: 2px solid var(--line);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.6;
}

.text-accent {
  color: var(--accent);
}

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

.seo-description {
  max-width: 620px;
  margin: 0 auto 48px;
  opacity: 0.68;
  font-size: 1.05rem;
  line-height: 1.75;
}

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

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

@media (max-width: 768px) {
  .header-inner {
    padding: 0 16px;
  }

  .hero {
    min-height: auto;
    padding: 56px 0 72px;
    flex-direction: column;
  }

  .hero > .container {
    display: flex;
    flex-direction: column;
    gap: 48px;
  }

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

  .hero-content::after {
    font-size: 120px;
    top: -40px;
  }

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

  .feature-block {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

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

  .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: var(--bg);
    padding: 16px 24px 24px;
    border-bottom: var(--border);
    box-shadow: 0 12px 24px rgba(38, 35, 29, 0.1);
    gap: 0;
    align-items: stretch;
  }

  .main-nav.open a {
    padding: 14px 0;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--line);
  }

  .main-nav.open a.nav-cta {
    border: var(--border);
    text-align: center;
    margin-top: 14px;
    padding: 12px 0 !important;
  }

  .section {
    padding: 72px 0;
  }

  .cta-banner {
    padding: 56px 24px;
  }
}

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

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

  .hero-buttons {
    flex-direction: column;
  }

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

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

  .hero::before {
    display: none;
  }

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

  .section {
    padding: 60px 0;
  }

  .stat-item {
    padding: 24px 16px;
  }

  .content-wall-body::after {
    font-size: 1.1rem;
  }
}