:root {
  --bg: #FBF6EE;
  --bg-alt: #F2E8D8;
  --card: #FFFDF7;
  --primary: #E85D3D;
  --secondary: #2B9D8F;
  --accent: #F0A55A;
  --yellow: #E9C46A;
  --ink: #43322A;
  --ink-light: #7A6A5E;
  --shadow: rgba(67, 50, 42, 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;
  background-color: var(--bg);
  background-image: radial-gradient(rgba(67, 50, 42, 0.028) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

.section {
  padding: 90px 0;
  position: relative;
}

.section:nth-child(even) {
  background-color: var(--bg-alt);
  background-image: radial-gradient(rgba(67, 50, 42, 0.025) 1px, transparent 1px);
  background-size: 22px 22px;
}

/* ========== 导航 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(251, 246, 238, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 2px dashed rgba(67, 50, 42, 0.28);
}

.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: -0.5px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 50% 50% 10% 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transform: rotate(-8deg);
  box-shadow: 2px 2px 0 var(--ink);
  font-weight: 800;
}

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

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink);
  position: relative;
  padding: 4px 0;
  transition: color 0.2s;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent);
  border-radius: 3px;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.25s ease;
}

.main-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-cta {
  padding: 9px 22px !important;
  border-radius: 30px 6px 30px 6px;
  color: #fff !important;
  font-weight: 800 !important;
  background: var(--secondary);
  border: 2px solid var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
  transition: all 0.2s ease !important;
}

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

.nav-cta:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--ink);
  color: #fff !important;
}

.menu-toggle {
  display: none;
  background: none;
  border: 2px solid var(--ink);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 1.3rem;
  cursor: pointer;
  color: var(--ink);
  line-height: 1;
}

/* ========== Hero ========== */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  gap: 48px;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  right: -80px;
  transform: translateY(-50%);
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: var(--yellow);
  border: 26px solid var(--secondary);
  opacity: 0.35;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  top: 18%;
  right: 20%;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.5;
  z-index: 0;
}

.hero-content {
  max-width: 640px;
  position: relative;
  z-index: 1;
  flex: 1;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 1.5px;
  padding: 7px 18px;
  border-radius: 40px 6px 40px 6px;
  margin-bottom: 20px;
  background: var(--secondary);
  color: #fff;
  border: 2px solid var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
  transform: rotate(-2deg);
}

.hero h1 {
  font-size: clamp(2.8rem, 6.2vw, 4.8rem);
  font-weight: 900;
  letter-spacing: -3px;
  line-height: 1.08;
  margin-bottom: 22px;
  position: relative;
  display: inline-block;
  z-index: 1;
}

.hero h1::after {
  content: '';
  position: absolute;
  bottom: 10px;
  left: 42%;
  width: 58%;
  height: 12px;
  background: var(--accent);
  opacity: 0.4;
  z-index: -1;
  border-radius: 20px;
  transform: rotate(-1.2deg);
}

.hero p {
  font-size: 1.1rem;
  color: rgba(67, 50, 42, 0.8);
  max-width: 540px;
  margin-bottom: 36px;
  background: linear-gradient(transparent 62%, rgba(240, 165, 90, 0.28) 62%);
  padding: 0 4px;
}

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

.hero-image {
  flex: 0 0 42%;
  max-width: 460px;
  border-radius: 30% 8% 30% 8% / 15% 28% 15% 28%;
  overflow: hidden;
  border: 4px solid var(--ink);
  box-shadow: 12px 12px 0 var(--accent);
  transform: rotate(1.5deg);
  position: relative;
  z-index: 1;
}

.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: 40px 6px 40px 6px;
  font-weight: 800;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid var(--ink);
  text-decoration: none;
  box-shadow: 3px 3px 0 var(--ink);
  transition: all 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--ink);
}

.btn:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--ink);
}

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

.btn-primary:hover {
  background: #23897c;
  color: #fff;
}

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

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

/* ========== 标签/标题 ========== */
.section-label {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 1.5px;
  padding: 6px 18px;
  border-radius: 30px 6px 30px 6px;
  border: 2px solid var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
  transform: rotate(-2deg);
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 900;
  letter-spacing: -1.5px;
  line-height: 1.2;
  margin-bottom: 14px;
  position: relative;
  display: inline-block;
  z-index: 1;
}

.section-title::after {
  content: '';
  position: absolute;
  left: 38%;
  bottom: 4px;
  width: 64%;
  height: 8px;
  background: var(--accent);
  opacity: 0.35;
  z-index: -1;
  border-radius: 10px;
  transform: rotate(0.5deg);
}

.section-desc {
  max-width: 600px;
  color: rgba(67, 50, 42, 0.72);
  margin-bottom: 44px;
  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);
  border: 2px solid var(--ink);
  border-radius: 6px 24px 6px 24px;
  padding: 30px 28px;
  position: relative;
  box-shadow: 5px 5px 0 var(--shadow);
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform: rotate(-1deg);
  margin-top: 12px;
}

.category-card::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%) rotate(-2deg);
  width: 54px;
  height: 18px;
  background: rgba(240, 165, 90, 0.7);
  border-left: 2px dashed rgba(67, 50, 42, 0.2);
  border-right: 2px dashed rgba(67, 50, 42, 0.2);
  border-radius: 3px;
  z-index: 2;
}

.category-card:nth-child(even) {
  transform: rotate(1.3deg);
}

.category-card:nth-child(3n) {
  transform: rotate(-0.6deg);
}

.category-card:nth-child(4n) {
  transform: rotate(0.8deg);
}

.category-card:hover {
  transform: rotate(0deg) translateY(-5px) scale(1.02);
  box-shadow: 8px 8px 0 var(--ink);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px 4px 16px 4px;
  background: var(--accent);
  border: 2px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  transform: rotate(-3deg);
  box-shadow: 2px 2px 0 var(--ink);
}

.category-card:nth-child(even) .card-icon {
  background: var(--secondary);
  transform: rotate(2deg);
}

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

.card-link {
  font-weight: 800;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--ink);
  display: inline-block;
  margin-top: 14px;
  padding: 4px 0;
  border-bottom: 3px solid var(--accent);
  transition: all 0.2s;
}

.card-link:hover {
  border-bottom-color: var(--primary);
  color: var(--primary);
}

/* ========== 特性块 ========== */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 64px;
}

.feature-block:last-child {
  margin-bottom: 0;
}

.feature-block:nth-child(even) .feature-image {
  order: 2;
}

.feature-image {
  border-radius: 22px 60px 22px 60px;
  overflow: hidden;
  border: 3px solid var(--ink);
  box-shadow: 8px 8px 0 var(--shadow);
  position: relative;
  transform: rotate(-1deg);
}

.feature-image::after {
  content: '';
  position: absolute;
  right: -14px;
  top: -14px;
  width: 52px;
  height: 52px;
  background: var(--accent);
  border: 2px solid var(--ink);
  border-radius: 50%;
  z-index: 1;
}

.feature-image:nth-child(even)::after {
  left: -14px;
  right: auto;
  background: var(--secondary);
}

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

.feature-text {
  position: relative;
}

.feature-text h3 {
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  margin-bottom: 14px;
}

.feature-text p {
  color: rgba(67, 50, 42, 0.72);
  margin-bottom: 20px;
}

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

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.feature-list li::before {
  content: '✓';
  font-weight: 900;
  color: var(--secondary);
  font-size: 1.15rem;
  background: rgba(43, 157, 143, 0.12);
  width: 26px;
  height: 26px;
  border-radius: 8px 2px 8px 2px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--secondary);
}

/* ========== 数据条 ========== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  text-align: center;
}

.stat-item {
  background: var(--card);
  padding: 32px 20px;
  border-radius: 18px 4px 18px 4px;
  border: 2px solid var(--ink);
  box-shadow: 5px 5px 0 var(--shadow);
  transform: rotate(-1deg);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.stat-item:nth-child(even) {
  transform: rotate(1.2deg);
}

.stat-item:nth-child(3n) {
  transform: rotate(0.5deg);
}

.stat-item:hover {
  transform: rotate(0deg) translateY(-4px);
  box-shadow: 8px 8px 0 var(--accent);
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: -1px;
  line-height: 1.1;
}

.stat-number::first-letter {
  color: var(--secondary);
}

.stat-label {
  font-size: 0.88rem;
  color: var(--ink-light);
  margin-top: 8px;
  font-weight: 600;
}

/* ========== 内容墙 ========== */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.content-wall-item {
  background: var(--card);
  border: 2px solid var(--ink);
  border-radius: 6px 20px 6px 20px;
  box-shadow: 5px 5px 0 var(--shadow);
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform: rotate(-1.5deg);
  position: relative;
  margin-top: 12px;
}

.content-wall-item::before {
  content: '';
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%) rotate(1.5deg);
  width: 48px;
  height: 16px;
  background: rgba(233, 196, 106, 0.65);
  border-radius: 3px;
  z-index: 2;
  border-left: 2px dashed rgba(67, 50, 42, 0.2);
  border-right: 2px dashed rgba(67, 50, 42, 0.2);
}

.content-wall-item:nth-child(even) {
  transform: rotate(1.5deg);
}

.content-wall-item:nth-child(3n) {
  transform: rotate(-0.8deg);
}

.content-wall-item:hover {
  transform: rotate(0deg) translateY(-5px) scale(1.02);
  box-shadow: 8px 8px 0 var(--ink);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  border-bottom: 2px solid var(--ink);
  border-radius: 6px 20px 0 0;
}

.content-wall-body {
  padding: 22px;
}

.content-wall-body h4 {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 8px;
}

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

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

.faq-item {
  background: var(--card);
  border: 2px solid var(--ink);
  border-radius: 14px 4px 14px 4px;
  margin-bottom: 14px;
  overflow: hidden;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--shadow);
  transition: all 0.25s ease;
}

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

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

.faq-question {
  padding: 18px 22px;
  font-weight: 800;
  font-size: 1.02rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-question::after {
  content: '+';
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-question::after {
  content: '−';
  color: var(--secondary);
}

.faq-answer {
  padding: 0 22px 18px;
  display: none;
  color: var(--ink-light);
  font-size: 0.95rem;
  line-height: 1.7;
}

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

/* ========== CTA横幅 ========== */
.cta-banner {
  background: var(--primary);
  padding: 64px 48px;
  text-align: center;
  border-radius: 28px 8px 28px 8px;
  border: 3px solid var(--ink);
  box-shadow: 8px 8px 0 var(--ink);
  position: relative;
  overflow: hidden;
  color: #fff;
}

.cta-banner::before {
  content: '✦';
  position: absolute;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 8rem;
  color: rgba(255, 255, 255, 0.12);
  line-height: 1;
}

.cta-banner::after {
  content: '';
  position: absolute;
  left: -20px;
  bottom: -20px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 12px solid rgba(255, 255, 255, 0.12);
}

.cta-banner h2 {
  color: #fff;
  font-size: 2.4rem;
  font-weight: 900;
  letter-spacing: -1px;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 28px;
  font-size: 1.05rem;
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary {
  background: var(--ink);
  color: #fff;
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 #fff;
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  background: #5a4636;
  box-shadow: 6px 6px 0 rgba(255, 255, 255, 0.85);
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--bg-alt);
  background-image: radial-gradient(rgba(67, 50, 42, 0.025) 1px, transparent 1px);
  background-size: 20px 20px;
  padding: 64px 0 28px;
  border-top: 3px dashed rgba(67, 50, 42, 0.3);
  color: var(--ink);
}

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

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

.footer-brand p {
  color: var(--ink-light);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 18px;
  text-transform: uppercase;
  color: var(--ink);
}

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

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

.footer-bottom {
  border-top: 2px dashed rgba(67, 50, 42, 0.2);
  margin-top: 48px;
  padding-top: 22px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-light);
}

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

.text-accent-2 {
  color: var(--secondary);
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  color: rgba(67, 50, 42, 0.72);
  font-size: 1rem;
}

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

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

.text-center .section-title::after {
  left: 30%;
  width: 40%;
}

.text-center .section-label {
  transform: rotate(1deg);
}

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

/* ========== 响应式 ========== */
@media (max-width: 992px) {
  .hero {
    flex-direction: column;
    padding: 110px 0 60px;
  }

  .hero-image {
    flex: none;
    width: 100%;
    max-width: 520px;
  }

  .feature-block {
    gap: 40px;
  }

  .cta-banner {
    padding: 48px 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 70px 0;
  }

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

  .feature-block:nth-child(even) .feature-image {
    order: 0;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

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

  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--bg);
    border-bottom: 2px dashed var(--ink);
    padding: 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    box-shadow: 0 12px 24px var(--shadow);
  }

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

  .menu-toggle {
    display: flex;
  }

  .hero h1 {
    font-size: 2.6rem;
    letter-spacing: -1.5px;
  }

  .section-title {
    font-size: 1.9rem;
  }

  .cta-banner h2 {
    font-size: 1.8rem;
  }

  .cta-banner::before {
    font-size: 5rem;
  }
}

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

  .stats-bar {
    grid-template-columns: 1fr;
  }

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

  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-buttons .btn {
    justify-content: center;
  }

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

  .section {
    padding: 56px 0;
  }

  .site-header {
    border-bottom-width: 2px;
  }

  .header-inner {
    height: 64px;
  }

  .main-nav {
    top: 64px;
  }

  .feature-block {
    gap: 28px;
  }
}