:root {
  --paper: #F6F2EA;
  --paper-alt: #EFE7DB;
  --cream: #FFFBF5;
  --ink: #2B2823;
  --ink-soft: #736A5F;
  --jade: #0E6B5C;
  --jade-deep: #0A5348;
  --jade-mist: #DDECE6;
  --coral: #E15C43;
  --amber: #F0B971;
  --line: rgba(43, 40, 35, 0.12);
  --shadow: 0 16px 40px rgba(43, 40, 35, 0.08);
}

*,
*::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:
    radial-gradient(circle at 10% 10%, rgba(240, 185, 113, 0.16), transparent 28%),
    radial-gradient(circle at 90% 90%, rgba(14, 107, 92, 0.08), transparent 36%),
    var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

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

.section {
  padding: 96px 0;
  position: relative;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(246, 242, 234, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 2px 16px rgba(43, 40, 35, 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: 10px;
  font-weight: 900;
  font-size: 1.2rem;
  text-decoration: none;
  color: var(--ink);
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px 4px 12px 4px;
  background: var(--jade);
  color: var(--paper);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 900;
  box-shadow: 3px 3px 0 rgba(14, 107, 92, 0.18);
}

.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;
  transition: 0.2s;
  color: var(--ink);
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--coral);
  transition: width 0.25s ease;
}

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

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

.nav-cta {
  padding: 10px 24px;
  border-radius: 12px 4px 12px 4px;
  background: var(--coral);
  color: #fff !important;
  font-weight: 700;
  box-shadow: 4px 4px 0 rgba(225, 92, 67, 0.18);
}

.nav-cta:hover {
  transform: translateY(-2px) rotate(-1deg);
  box-shadow: 6px 6px 0 rgba(225, 92, 67, 0.22);
  color: #fff !important;
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: 0.3s;
}

.hero {
  min-height: 92vh;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  align-items: center;
  gap: 56px;
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '阅';
  position: absolute;
  z-index: 0;
  right: -4vw;
  top: 50%;
  transform: translateY(-50%);
  font-size: 48vh;
  line-height: 1;
  font-weight: 900;
  color: rgba(240, 185, 113, 0.1);
  pointer-events: none;
  animation: qinDrift 8s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  left: 6%;
  bottom: 6%;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 107, 92, 0.12), transparent 70%);
  pointer-events: none;
}

@keyframes qinDrift {
  0%, 100% {
    transform: translateY(-50%) rotate(0deg);
  }
  50% {
    transform: translateY(-50%) rotate(1.2deg);
  }
}

.hero-content {
  max-width: 680px;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 30px;
  margin-bottom: 20px;
  background: var(--jade-mist);
  color: var(--jade);
  letter-spacing: 0.06em;
}

.hero h1 {
  font-size: clamp(2.6rem, 5.2vw, 4.5rem);
  line-height: 1.08;
  margin-bottom: 24px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.hero h1::after {
  content: '';
  display: block;
  width: 72px;
  height: 5px;
  margin-top: 18px;
  background: var(--coral);
  border-radius: 4px;
  transform: skew(-18deg);
}

.hero p {
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 540px;
  margin-bottom: 36px;
  line-height: 1.8;
}

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

.hero-image {
  border-radius: 24px 6px 24px 6px;
  overflow: hidden;
  position: relative;
  z-index: 1;
  box-shadow:
    14px 14px 0 rgba(14, 107, 92, 0.13),
    -7px -7px 0 rgba(225, 92, 67, 0.1),
    0 18px 36px rgba(43, 40, 35, 0.1);
  transition: transform 0.4s ease;
}

.hero-image:hover {
  transform: translate(-3px, -3px);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 14px 4px 14px 4px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: 0.25s;
  font-size: 0.95rem;
  line-height: 1;
}

.btn-primary {
  background: var(--jade);
  color: #fff;
  box-shadow: 5px 5px 0 rgba(14, 107, 92, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 7px 7px 0 rgba(14, 107, 92, 0.26);
}

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

.btn-outline:hover {
  border-color: var(--coral);
  color: var(--coral);
  background: rgba(225, 92, 67, 0.05);
  transform: translateY(-2px);
}

.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  margin-bottom: 14px;
  color: var(--coral);
  text-transform: uppercase;
  position: relative;
  padding-left: 18px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 10px;
  height: 2px;
  background: var(--coral);
  transform: translateY(-50%);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 16px;
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.01em;
}

.section-desc {
  max-width: 620px;
  opacity: 0.75;
  margin-bottom: 48px;
  color: var(--ink-soft);
  line-height: 1.8;
}

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

.category-card {
  border-radius: 18px 4px 18px 4px;
  padding: 32px 28px;
  border: 1px solid var(--line);
  background: var(--cream);
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--jade), var(--amber));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s ease;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: transparent;
}

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

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px 3px 12px 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.4rem;
  background: var(--jade-mist);
  color: var(--jade);
}

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--coral);
}

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

.card-link:hover::after {
  margin-left: 4px;
}

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

.feature-image {
  border-radius: 24px 6px 24px 6px;
  overflow: hidden;
  position: relative;
  box-shadow: 12px 12px 0 rgba(14, 107, 92, 0.1);
}

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

.feature-image:hover img {
  transform: scale(1.02);
}

.feature-text {
  position: relative;
}

.feature-text h3 {
  font-size: 1.7rem;
  font-weight: 900;
  margin-bottom: 12px;
}

.feature-list {
  list-style: none;
  margin-top: 8px;
}

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.98rem;
  color: var(--ink);
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--jade-mist);
  color: var(--jade);
  border-radius: 50%;
  font-size: 0.8rem;
}

.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 36px 20px;
  border-radius: 18px 4px 18px 4px;
  border: 1px solid var(--line);
  background: var(--cream);
  position: relative;
  overflow: hidden;
}

.stat-item::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 28px;
  height: 4px;
  background: var(--coral);
  border-radius: 4px 4px 0 0;
}

.stat-number {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--jade);
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.65;
  margin-top: 8px;
  color: var(--ink-soft);
}

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

.content-wall-item {
  border-radius: 16px 4px 16px 4px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--cream);
  transition: transform 0.25s, box-shadow 0.25s;
}

.content-wall-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.content-wall-item:hover img {
  transform: scale(1.04);
}

.content-wall-body {
  padding: 20px 24px 24px;
}

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.content-wall-body p {
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.6;
}

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

.faq-item {
  border: 1px solid var(--line);
  border-radius: 12px 3px 12px 3px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  background: var(--cream);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.faq-item:hover {
  border-color: var(--jade);
  box-shadow: 0 4px 12px rgba(14, 107, 92, 0.06);
}

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

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--coral);
  transition: transform 0.3s ease;
  font-weight: 400;
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  opacity: 0.75;
  color: var(--ink-soft);
  line-height: 1.8;
}

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

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

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

.cta-banner {
  padding: 64px 32px;
  text-align: center;
  border-radius: 28px 6px 28px 6px;
  color: #fff;
  background: linear-gradient(135deg, #EF6A55, #E15C43 55%, #C9432F);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '阅';
  position: absolute;
  left: 4%;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12rem;
  color: rgba(255, 255, 255, 0.1);
  font-weight: 900;
  line-height: 1;
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  right: -50px;
  bottom: -50px;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  background: rgba(240, 185, 113, 0.3);
}

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

.cta-banner p {
  position: relative;
  z-index: 1;
  opacity: 0.85;
  margin-bottom: 24px;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--jade);
  box-shadow: none;
  border-radius: 14px 4px 14px 4px;
}

.cta-banner .btn-primary:hover {
  background: var(--amber);
  color: var(--ink);
  transform: translateY(-2px);
}

.site-footer {
  padding: 64px 0 28px;
  background: var(--paper-alt);
  border-top: 1px solid var(--line);
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-brand {
  position: relative;
}

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

.footer-brand p {
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.8;
  margin-top: 12px;
}

.footer-col {
  position: relative;
}

.footer-col h4 {
  font-size: 0.9rem;
  margin-bottom: 16px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.footer-col a {
  display: block;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 4px 0;
  font-size: 0.9rem;
  transition: 0.2s;
}

.footer-col a:hover {
  color: var(--coral);
  padding-left: 6px;
}

.footer-bottom {
  border-top: 1px solid rgba(43, 40, 35, 0.1);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

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

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  color: var(--ink-soft);
  line-height: 1.8;
}

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

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

@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 110px;
    gap: 40px;
  }

  .hero::before {
    font-size: 30vh;
    right: -10vw;
  }

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

  .feature-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .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: 72px;
    left: 0;
    width: 100%;
    background: var(--cream);
    padding: 20px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 24px rgba(43, 40, 35, 0.06);
  }

  .main-nav.open a {
    font-size: 1rem;
    padding: 8px 0;
  }

  .main-nav.open .nav-cta {
    display: inline-flex;
    justify-content: center;
  }

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

  .cta-banner::before {
    font-size: 8rem;
  }
}

@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;
    align-items: stretch;
  }

  .btn {
    justify-content: center;
  }

  .hero h1 {
    font-size: 2.3rem;
  }

  .section {
    padding: 64px 0;
  }

  .cta-banner h2 {
    font-size: 1.6rem;
  }

  .header-inner {
    height: 64px;
  }

  .main-nav.open {
    top: 64px;
  }
}