:root {
  --paper: #FBF7F0;
  --paper-2: #F2EADF;
  --ink: #383533;
  --primary: #EF476F;
  --secondary: #06D6A0;
  --tertiary: #118AB2;
  --sun: #FFD166;
  --coral: #FF7B54;
  --card-bg: #FFFFFF;
  --soft-pink: #FFE4EB;
  --soft-green: #E0FBE8;
  --soft-blue: #E0F4FF;
  --soft-yellow: #FFF3C4;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background-color: var(--paper);
  background-image: radial-gradient(rgba(61, 58, 51, 0.12) 1px, transparent 1px);
  background-size: 22px 22px;
  color: var(--ink);
  line-height: 1.6;
}

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

.section {
  padding: 80px 0;
}

.section:nth-child(even) {
  background-color: var(--paper-2);
  background-image: radial-gradient(rgba(61, 58, 51, 0.08) 1px, transparent 1px);
  background-size: 22px 22px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(251, 247, 240, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 3px solid var(--ink);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.2rem;
  text-decoration: none;
  color: var(--ink);
  background: var(--sun);
  padding: 6px 16px 6px 6px;
  border: 2px solid var(--ink);
  border-radius: 50px;
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform 0.2s, box-shadow 0.2s;
}

.logo:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--ink);
}

.logo-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  border: 2px solid var(--ink);
  box-shadow: 1px 1px 0 var(--ink);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink);
  padding: 6px 10px;
  border: 2px solid transparent;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.main-nav a:hover {
  background: var(--secondary);
  color: var(--ink);
  border-color: var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
  transform: translate(-1px, -1px);
}

.main-nav a.nav-cta {
  background: var(--primary);
  color: #fff;
  border: 2px solid var(--ink);
  border-radius: 4px;
  padding: 8px 20px;
  box-shadow: 3px 3px 0 var(--ink);
  font-weight: 800;
}

.main-nav a.nav-cta:hover {
  background: var(--coral);
  color: #fff;
  box-shadow: 1px 1px 0 var(--ink);
  transform: translate(2px, 2px);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: var(--secondary);
  border: 2px solid var(--ink);
  border-radius: 4px;
  box-shadow: 2px 2px 0 var(--ink);
  font-size: 1.2rem;
  cursor: pointer;
}

.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 80px 0;
}

.hero::before {
  content: '';
  position: absolute;
  right: -80px;
  bottom: -80px;
  width: 300px;
  height: 300px;
  background: var(--sun);
  border: 3px solid var(--ink);
  border-radius: 50%;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  right: 280px;
  top: -60px;
  width: 160px;
  height: 160px;
  background: var(--secondary);
  border: 3px solid var(--ink);
  transform: rotate(15deg);
  z-index: 0;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

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

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 6px 16px;
  background: var(--primary);
  color: #fff;
  border: 2px solid var(--ink);
  border-radius: 4px;
  box-shadow: 3px 3px 0 var(--ink);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 4.6rem);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  position: relative;
  display: inline-block;
}

.hero h1::after {
  content: '';
  position: absolute;
  left: -4px;
  right: -4px;
  bottom: 6px;
  height: 32%;
  background: var(--sun);
  z-index: -1;
  transform: rotate(-0.8deg);
  border-radius: 2px;
}

.hero p {
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--ink);
  opacity: 0.85;
  max-width: 560px;
  margin-bottom: 32px;
  padding-left: 18px;
  border-left: 4px solid var(--primary);
}

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

.hero-image {
  border: 3px solid var(--ink);
  border-radius: 8px;
  background: #fff;
  padding: 8px;
  box-shadow: 10px 10px 0 var(--tertiary);
  transform: rotate(2deg);
  transition: transform 0.2s, box-shadow 0.2s;
}

.hero-image:hover {
  transform: rotate(0deg) translate(-2px, -2px);
  box-shadow: 14px 14px 0 var(--secondary);
}

.hero-image img {
  display: block;
  width: 100%;
  height: 360px;
  object-fit: cover;
  border-radius: 4px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 4px;
  font-weight: 800;
  font-size: 1rem;
  cursor: pointer;
  border: 2px solid var(--ink);
  text-decoration: none;
  box-shadow: 5px 5px 0 var(--ink);
  transition: all 0.2s ease;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--ink);
}

.btn:active {
  transform: translate(3px, 3px);
  box-shadow: 1px 1px 0 var(--ink);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--coral);
}

.btn-outline {
  background: transparent;
  color: var(--ink);
}

.btn-outline:hover {
  background: var(--secondary);
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  background: var(--tertiary);
  color: #fff;
  padding: 6px 16px;
  border: 2px solid var(--ink);
  border-radius: 4px;
  box-shadow: 3px 3px 0 var(--ink);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-title::before {
  content: '●';
  color: var(--secondary);
  font-size: 0.6em;
  margin-right: 8px;
  vertical-align: middle;
}

.section-desc {
  max-width: 640px;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--ink);
  opacity: 0.8;
  margin-bottom: 40px;
  padding-left: 16px;
  border-left: 4px solid var(--secondary);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 32px;
}

.category-card {
  background: var(--card-bg);
  border: 2px solid var(--ink);
  border-radius: 8px;
  padding: 32px;
  box-shadow: 6px 6px 0 var(--ink);
  transition: all 0.2s ease;
  position: relative;
}

.category-card:nth-child(1) { background: var(--soft-pink); }
.category-card:nth-child(2) { background: var(--soft-green); }
.category-card:nth-child(3) { background: var(--soft-blue); }
.category-card:nth-child(4) { background: var(--soft-yellow); }

.category-card:nth-child(odd) { transform: rotate(-0.5deg); }
.category-card:nth-child(even) { transform: rotate(0.5deg); }

.category-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 10px 10px 0 var(--ink);
}

.category-card:nth-child(odd):hover { transform: rotate(-1deg) translate(-3px, -3px); }
.category-card:nth-child(even):hover { transform: rotate(1deg) translate(-3px, -3px); }

.card-icon {
  width: 52px;
  height: 52px;
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 8px;
  box-shadow: 3px 3px 0 var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
}

.card-link {
  display: inline-block;
  font-weight: 800;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 3px solid var(--primary);
  padding-bottom: 2px;
  transition: background 0.2s;
}

.card-link::after {
  content: ' →';
}

.card-link:hover {
  background: var(--sun);
}

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

.feature-image {
  background: #fff;
  border: 3px solid var(--ink);
  border-radius: 8px;
  padding: 8px;
  box-shadow: 8px 8px 0 var(--secondary);
  transform: rotate(-1deg);
}

.feature-image img {
  display: block;
  width: 100%;
  height: 340px;
  object-fit: cover;
  border-radius: 4px;
}

.feature-text {
  font-size: 1.05rem;
  line-height: 1.7;
}

.feature-text p {
  opacity: 0.8;
  margin-bottom: 20px;
}

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

.feature-list li {
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 4px;
  box-shadow: 3px 3px 0 var(--ink);
  margin-bottom: 10px;
}

.feature-list li::before {
  content: '✹';
  font-weight: 900;
  color: var(--primary);
  font-size: 1.1rem;
}

.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item {
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 8px;
  padding: 28px 16px;
  box-shadow: 5px 5px 0 var(--ink);
  transition: all 0.2s ease;
}

.stat-item:hover {
  transform: translate(-2px, -2px) rotate(-1deg);
  box-shadow: 8px 8px 0 var(--primary);
}

.stat-number {
  display: inline-block;
  font-size: clamp(2.5rem, 3vw, 3.5rem);
  font-weight: 900;
  line-height: 1.1;
  color: var(--ink);
  background: var(--sun);
  padding: 4px 12px;
  border: 2px solid var(--ink);
  border-radius: 4px;
  box-shadow: 2px 2px 0 var(--ink);
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink);
  opacity: 0.65;
  margin-top: 10px;
}

.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 32px;
}

.content-wall-item {
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 6px 6px 0 var(--ink);
  transition: all 0.2s ease;
  position: relative;
}

.content-wall-item::after {
  content: '★';
  position: absolute;
  top: 10px;
  right: 10px;
  width: 30px;
  height: 30px;
  background: var(--sun);
  border: 2px solid var(--ink);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 900;
  box-shadow: 2px 2px 0 var(--ink);
}

.content-wall-item:nth-child(even) {
  transform: rotate(0.6deg);
}

.content-wall-item:hover {
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0 var(--tertiary);
}

.content-wall-item:nth-child(even):hover {
  transform: rotate(-0.5deg) translate(-3px, -3px);
}

.content-wall-item img {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 3px solid var(--ink);
}

.content-wall-body {
  padding: 20px;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
}

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

.faq-item {
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 6px;
  margin-bottom: 14px;
  overflow: hidden;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--ink);
  transition: all 0.2s ease;
}

.faq-item.open {
  box-shadow: 5px 5px 0 var(--secondary);
}

.faq-question {
  padding: 18px 20px;
  font-weight: 800;
  font-size: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--primary);
  transition: transform 0.2s;
}

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

.faq-answer {
  padding: 12px 20px 18px;
  display: none;
  opacity: 0.75;
  line-height: 1.7;
  border-top: 2px dashed var(--ink);
}

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

.cta-banner {
  background: var(--primary);
  color: #fff;
  padding: 64px 32px;
  text-align: center;
  border: 3px solid var(--ink);
  border-radius: 8px;
  box-shadow: 8px 8px 0 var(--ink);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -14px;
  left: -14px;
  width: 46px;
  height: 46px;
  background: var(--sun);
  border: 2px solid var(--ink);
  border-radius: 50%;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 80px;
  height: 80px;
  background: var(--secondary);
  border: 3px solid var(--ink);
  transform: rotate(20deg);
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--primary);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  background: var(--sun);
  color: var(--ink);
}

.site-footer {
  padding: 56px 0 28px;
  background: #EDE3D7;
  border-top: 3px solid var(--ink);
}

.site-footer .container {
  position: relative;
}

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

.footer-brand {
  font-size: 1.1rem;
  font-weight: 900;
  line-height: 1.6;
}

.footer-brand .logo-icon {
  margin-bottom: 8px;
}

.footer-col {
  font-size: 0.9rem;
  line-height: 1.9;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 900;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--ink);
  display: inline-block;
  padding-bottom: 2px;
}

.footer-col a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--primary);
  transition: background 0.2s;
}

.footer-col a:hover {
  background: var(--sun);
}

.footer-bottom {
  border-top: 2px solid var(--ink);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0.75;
}

.text-accent {
  color: var(--primary);
  font-weight: 900;
  background: var(--sun);
  padding: 0 6px;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.8;
  line-height: 1.8;
  padding-left: 16px;
  border-left: 4px solid var(--primary);
}

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

@media (max-width: 900px) {
  .hero .container {
    grid-template-columns: 1fr;
  }
  .hero-image {
    max-width: 560px;
  }
  .feature-block {
    grid-template-columns: 1fr;
  }
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .feature-block { grid-template-columns: 1fr; }
  .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(--paper);
    padding: 20px;
    gap: 8px;
    border-bottom: 3px solid var(--ink);
    box-shadow: 0 8px 0 var(--ink);
  }

  .main-nav.open a {
    padding: 12px 16px;
    border-color: var(--ink);
    text-align: center;
  }

  .main-nav.open a.nav-cta {
    margin-top: 4px;
  }
}

@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: 2.4rem;
  }

  .hero-image img {
    height: 260px;
  }

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