:root {
  --primary: #FF6B35;
  --primary-light: #FFEDE3;
  --secondary: #4ECDC4;
  --secondary-light: #E8F8F5;
  --accent: #FFD93D;
  --accent-light: #FFF3BF;
  --bg: #FFF8F0;
  --bg-alt: #F0F7F4;
  --text: #3A3A3A;
  --border: #3A3A3A;
  --shadow: rgba(58, 58, 58, 1);
  --radius-lg: 26px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --sticker-shadow: 4px 4px 0 var(--shadow);
  --sticker-shadow-lg: 8px 8px 0 var(--shadow);
}

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

body {
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 15% 25%, rgba(255, 217, 61, 0.10) 0%, transparent 45%),
    radial-gradient(circle at 85% 60%, rgba(78, 205, 196, 0.10) 0%, transparent 40%),
    radial-gradient(circle at 50% 95%, rgba(255, 107, 53, 0.07) 0%, transparent 45%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  font-size: 16px;
}

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

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 8px;
  border: 2px solid var(--border);
}
::-webkit-scrollbar-thumb:hover {
  background: #e85a28;
}

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

.section {
  padding: 80px 0;
  position: relative;
}

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

/* ---------- 导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 248, 240, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 2px dashed var(--secondary);
}

.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: 1.3rem;
  text-decoration: none;
  color: var(--text);
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: var(--primary);
  color: #fff;
  border: 2px solid var(--border);
  box-shadow: 3px 3px 0 var(--shadow);
  transform: rotate(-6deg);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.logo:hover .logo-icon {
  transform: rotate(6deg) scale(1.08);
}

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

.main-nav a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  transition: color 0.2s;
  position: relative;
  padding: 4px 2px;
}

.main-nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 3px;
  background: var(--primary);
  border-radius: 4px;
  transform: translateX(-50%);
  transition: width 0.3s ease;
}

.main-nav a:not(.nav-cta):hover {
  color: var(--primary);
}

.main-nav a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-cta {
  background: var(--primary);
  color: #fff !important;
  padding: 9px 24px !important;
  border-radius: 40px;
  font-weight: 700;
  border: 2px solid var(--border);
  box-shadow: 3px 3px 0 var(--shadow);
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.nav-cta:hover {
  transform: translateY(-2px) rotate(-1deg);
  box-shadow: 5px 5px 0 var(--shadow);
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 2px solid var(--border);
  border-radius: 12px;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text);
  font-size: 1.5rem;
  line-height: 1;
  box-shadow: 2px 2px 0 var(--shadow);
  transition: all 0.2s;
}

.menu-toggle:hover {
  background: var(--accent);
  transform: rotate(3deg);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 75vh;
  display: flex;
  align-items: center;
  padding-top: 130px;
  padding-bottom: 60px;
  position: relative;
}

.hero::before {
  content: '囧';
  position: absolute;
  right: 6%;
  top: 12%;
  font-size: 22rem;
  font-weight: 900;
  color: var(--primary);
  opacity: 0.06;
  line-height: 1;
  z-index: 0;
  animation: heroFloat 8s ease-in-out infinite;
}

@keyframes heroFloat {
  0%, 100% { transform: rotate(-4deg) translateY(0); }
  50% { transform: rotate(4deg) translateY(-18px); }
}

.hero-content {
  max-width: 680px;
  background: #fff;
  border: 3px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 52px;
  box-shadow: 12px 12px 0 var(--shadow);
  position: relative;
  z-index: 1;
  transform: rotate(-0.5deg);
}

.hero-content::after {
  content: '';
  position: absolute;
  bottom: -18px;
  left: 72px;
  width: 26px;
  height: 26px;
  background: #fff;
  border-right: 3px solid var(--border);
  border-bottom: 3px solid var(--border);
  border-bottom-right-radius: 10px;
  transform: rotate(45deg);
  z-index: -1;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 800;
  padding: 5px 18px;
  border-radius: 40px;
  background: var(--accent);
  border: 2px solid var(--border);
  box-shadow: 2px 2px 0 var(--shadow);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 3.4rem;
  font-weight: 900;
  line-height: 1.18;
  margin-bottom: 20px;
  letter-spacing: -2px;
  color: var(--text);
}

.hero h1 .highlight {
  color: var(--primary);
  text-decoration: underline wavy var(--accent) 4px;
  text-underline-offset: 6px;
}

.hero p {
  font-size: 1.08rem;
  opacity: 0.75;
  max-width: 540px;
  margin-bottom: 34px;
  line-height: 1.7;
}

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

.hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 3px solid var(--border);
  box-shadow: 10px 10px 0 var(--shadow);
  transform: rotate(2deg);
  transition: transform 0.3s ease;
}

.hero-image:hover {
  transform: rotate(0deg) scale(1.01);
}

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 60px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid var(--border);
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 4px 4px 0 var(--shadow);
}

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

.btn-primary:hover {
  background: #e85a28;
  transform: translateY(-3px) rotate(-1deg);
  box-shadow: 7px 7px 0 var(--shadow);
}

.btn-primary:active {
  transform: translateY(2px) rotate(1deg);
  box-shadow: 2px 2px 0 var(--shadow);
}

.btn-outline {
  background: #fff;
  color: var(--text);
  border-width: 2px;
}

.btn-outline:hover {
  background: var(--accent);
  transform: translateY(-3px) rotate(2deg);
  box-shadow: 7px 7px 0 var(--shadow);
}

.btn-outline:active {
  transform: translateY(2px);
  box-shadow: 2px 2px 0 var(--shadow);
}

/* ---------- 标签/标题 ---------- */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 16px;
  background: var(--secondary);
  color: var(--text);
  padding: 5px 18px;
  border-radius: 40px;
  border: 2px solid var(--border);
  box-shadow: 2px 2px 0 var(--shadow);
  text-transform: uppercase;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 16px;
  letter-spacing: -1px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 100%;
  height: 12px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='12' viewBox='0 0 120 12'%3E%3Cpath d='M0 6C10 0, 20 0, 30 6S50 12, 60 6 70 0, 80 0, 90 6S110 12, 120 6' fill='none' stroke='%23FF6B35' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: repeat-x;
  background-position: bottom;
  background-size: 100px 12px;
  opacity: 0.7;
}

.section-desc {
  max-width: 620px;
  opacity: 0.72;
  margin: 18px 0 44px;
  font-size: 1.02rem;
  line-height: 1.7;
}

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

.category-card {
  border-radius: var(--radius-lg);
  padding: 30px;
  border: 2px solid var(--border);
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  box-shadow: var(--sticker-shadow);
}

.category-card:nth-child(1) {
  background: var(--accent-light);
  transform: rotate(-1.2deg);
}

.category-card:nth-child(2) {
  background: var(--secondary-light);
  transform: rotate(0.8deg);
}

.category-card:nth-child(3) {
  background: var(--primary-light);
  transform: rotate(-0.6deg);
}

.category-card:nth-child(4) {
  background: #E2EFDA;
  transform: rotate(1.5deg);
}

.category-card:hover {
  transform: translateY(-6px) rotate(0deg) scale(1.02);
  box-shadow: var(--sticker-shadow-lg);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  background: #fff;
  border: 2px solid var(--border);
  box-shadow: 2px 2px 0 var(--shadow);
}

.card-link {
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  transition: gap 0.2s;
}

.card-link:hover {
  gap: 12px;
}

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

/* ---------- 特性块 ---------- */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 40px;
}

.feature-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 3px solid var(--border);
  box-shadow: var(--sticker-shadow-lg);
  transform: rotate(-1.5deg);
  transition: transform 0.3s ease;
}

.feature-block:nth-child(2) .feature-image {
  transform: rotate(1.5deg);
}

.feature-image:hover {
  transform: rotate(0deg) scale(1.01);
}

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

.feature-text {
  padding: 10px 0;
}

.feature-text h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.feature-text p {
  opacity: 0.72;
  margin-bottom: 20px;
  line-height: 1.7;
}

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

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
}

.feature-list li::before {
  content: '✦';
  font-weight: 900;
  color: var(--primary);
  font-size: 1.1rem;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  flex-shrink: 0;
  box-shadow: 1.5px 1.5px 0 var(--shadow);
}

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

.stat-item {
  padding: 28px 20px;
  border-radius: var(--radius-lg);
  border: 2px solid var(--border);
  box-shadow: var(--sticker-shadow);
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.stat-item:nth-child(1) { background: var(--accent-light); transform: rotate(-1deg); }
.stat-item:nth-child(2) { background: var(--secondary-light); transform: rotate(1deg); }
.stat-item:nth-child(3) { background: var(--primary-light); transform: rotate(-0.8deg); }
.stat-item:nth-child(4) { background: #E2EFDA; transform: rotate(0.8deg); }

.stat-item:hover {
  transform: rotate(0) translateY(-5px) scale(1.02);
  box-shadow: var(--sticker-shadow-lg);
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 900;
  letter-spacing: -2px;
  color: var(--text);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.65;
  margin-top: 8px;
  font-weight: 500;
}

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

.content-wall-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid var(--border);
  background: #fff;
  box-shadow: var(--sticker-shadow);
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.content-wall-item:hover {
  transform: translateY(-6px) rotate(0.5deg);
  box-shadow: var(--sticker-shadow-lg);
}

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

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

.content-wall-body h3 {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.content-wall-body p {
  font-size: 0.9rem;
  opacity: 0.7;
  line-height: 1.6;
}

.content-wall-body .content-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 20px;
  background: var(--primary-light);
  border: 1.5px solid var(--border);
  color: var(--text);
  margin-top: 12px;
  box-shadow: 1.5px 1.5px 0 var(--shadow);
}

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

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

.faq-item:hover {
  box-shadow: 5px 5px 0 var(--shadow);
  transform: translateX(3px);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 1rem;
  transition: background 0.2s;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform 0.3s ease;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  box-shadow: 1.5px 1.5px 0 var(--shadow);
}

.faq-item .faq-answer {
  padding: 0 22px 20px;
  display: none;
  opacity: 0.7;
  line-height: 1.7;
  font-size: 0.95rem;
}

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

.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-item.open .faq-question {
  background: var(--secondary-light);
}

/* ---------- CTA横幅 ---------- */
.cta-banner {
  padding: 60px 32px;
  text-align: center;
  border-radius: var(--radius-lg);
  color: #fff;
  position: relative;
  background: var(--primary);
  border: 3px solid var(--border);
  box-shadow: var(--sticker-shadow-lg);
}

.cta-banner::after {
  content: '';
  position: absolute;
  top: -18px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 32px;
  height: 32px;
  background: var(--primary);
  border-left: 3px solid var(--border);
  border-top: 3px solid var(--border);
  border-top-left-radius: 10px;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 480px;
  margin: 0 auto 28px;
  font-size: 1.05rem;
  line-height: 1.6;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--primary) !important;
}

.cta-banner .btn-primary:hover {
  background: var(--accent);
  color: var(--text) !important;
}

/* ---------- 页脚 ---------- */
.site-footer {
  padding: 56px 0 28px;
  background: var(--secondary-light);
  border-top: 3px solid var(--secondary);
  margin-top: 40px;
}

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

.footer-brand .logo {
  margin-bottom: 14px;
}

.footer-brand p {
  opacity: 0.65;
  font-size: 0.92rem;
  line-height: 1.6;
  max-width: 260px;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px dashed var(--secondary);
}

.footer-col a {
  display: block;
  text-decoration: none;
  color: var(--text);
  opacity: 0.7;
  font-size: 0.9rem;
  padding: 4px 0;
  transition: all 0.2s;
}

.footer-col a:hover {
  opacity: 1;
  color: var(--primary);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 2px dashed var(--secondary);
  margin-top: 40px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.6;
}

.footer-bottom .footer-emoji {
  font-size: 1.2rem;
  margin: 0 4px;
  display: inline-block;
  animation: bounce 1.2s ease infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

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

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  font-size: 1rem;
  line-height: 1.7;
  text-align: center;
}

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

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

  .hero {
    padding-top: 110px;
    min-height: auto;
  }

  .hero-content {
    padding: 32px 28px;
  }

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

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

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

  .stat-number {
    font-size: 2rem;
  }

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

  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 24px;
    right: 24px;
    width: auto;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--sticker-shadow-lg);
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    z-index: 100;
  }

  .main-nav.open {
    display: flex;
    animation: menuPop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  }

  @keyframes menuPop {
    from { opacity: 0; transform: translateY(-12px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
  }

  .main-nav a {
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 1rem;
  }

  .main-nav a:hover {
    background: var(--primary-light);
  }

  .main-nav .nav-cta {
    text-align: center;
  }

  .menu-toggle {
    display: flex;
  }

  .cta-banner {
    padding: 44px 24px;
  }

  .cta-banner h2 {
    font-size: 1.7rem;
  }
}

@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;
  }

  .hero-content {
    padding: 26px 20px;
  }

  .hero h1 {
    font-size: 1.85rem;
    letter-spacing: -1px;
  }

  .hero p {
    font-size: 0.95rem;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .stat-item {
    padding: 20px 14px;
  }

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

  .content-wall-item img {
    height: 170px;
  }

  .faq-item .faq-question {
    padding: 14px 16px;
    font-size: 0.95rem;
  }

  .faq-item .faq-answer {
    padding: 0 16px 16px;
  }

  .cta-banner {
    padding: 36px 20px;
    border-radius: 20px;
  }

  .cta-banner h2 {
    font-size: 1.4rem;
  }

  .footer-bottom {
    font-size: 0.78rem;
  }
}