/* ================================================
   本子 · benziii.com.cn
   设计概念：手帐漫画 / Sketchbook Panels
   配色：纸白 + 珊瑚红 + 墨绿青 + 芥末黄
   ================================================ */

/* 基础重置 */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

body { 
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif; 
  overflow-x:hidden;
  background-color: #FAF5EC;
  background-image: radial-gradient(circle, #E9E0D0 1px, transparent 1px);
  background-size: 32px 32px;
  color: #2D2A26;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 核心布局 — 居中 */
.container { 
  max-width: 1200px; 
  margin: 0 auto; 
  padding: 0 24px; 
  position: relative; 
  z-index: 2; 
}

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

.section:nth-child(even) { 
  background: #F1EADF; 
  position: relative;
  padding-top: 90px;
  padding-bottom: 90px;
}

.section:nth-child(even)::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: repeating-linear-gradient(90deg, transparent 0 12px, #D8CDBA 12px 20px);
  opacity: 0.9;
  pointer-events: none;
}

/* ========== 导航 ========== */
.site-header { 
  position: fixed; 
  top: 0; 
  left: 0; 
  width: 100%; 
  z-index: 1000; 
  background: rgba(250, 245, 236, 0.92); 
  backdrop-filter: blur(12px); 
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 2px dashed #D4CAB6; 
  box-shadow: 0 2px 20px rgba(45, 42, 38, 0.04);
}

.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: 8px; 
  font-weight: 900; 
  font-size: 1.25rem; 
  text-decoration: none; 
  color: #2D2A26;
  letter-spacing: 0.06em;
}

.logo-icon { 
  width: 36px; 
  height: 36px; 
  border-radius: 5px; 
  display: flex; 
  align-items: center; 
  justify-content: center; 
  font-size: 0.9rem;
  background: #FF5A4E;
  color: #fff;
  border: 2px solid #2D2A26;
  box-shadow: 2px 2px 0 #2D2A26;
  transform: rotate(-3deg);
  position: relative;
  overflow: hidden;
  font-weight: 900;
}

.logo-icon::after {
  content: '';
  position: absolute;
  left: 3px;
  right: 3px;
  bottom: 6px;
  height: 1.5px;
  background: rgba(255,255,255,0.3);
  box-shadow: 0 4px 0 rgba(255,255,255,0.2);
  pointer-events: none;
}

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

.main-nav a { 
  text-decoration: none; 
  font-size: 0.88rem; 
  font-weight: 600; 
  color: #2D2A26;
  transition: 0.25s;
  position: relative;
  padding: 5px 0;
  letter-spacing: 0.03em;
  background: none;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 3px;
  background: #FF5A4E;
  border-radius: 1px;
  transition: width 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.main-nav a:hover { 
  color: #FF5A4E; 
}

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

.nav-cta { 
  padding: 10px 24px !important; 
  border-radius: 0 !important; 
  background: #2D2A26 !important; 
  color: #FAF5EC !important; 
  font-weight: 700 !important; 
  border: 2px solid #2D2A26 !important;
  box-shadow: 3px 3px 0 #FF5A4E;
  transition: all 0.25s ease !important;
}

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

.nav-cta:hover {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 #FF5A4E;
  background: #FF5A4E !important;
  color: #fff !important;
  border-color: #2D2A26 !important;
}

.menu-toggle { 
  display: none; 
  width: 42px;
  height: 42px;
  background: transparent;
  border: 2.5px solid #2D2A26;
  border-radius: 0;
  cursor: pointer;
  font-size: 1.4rem;
  line-height: 1;
  color: #2D2A26;
  align-items: center;
  justify-content: center;
  transition: 0.2s;
  padding: 0;
}

.menu-toggle:hover {
  background: #FF5A4E;
  color: #fff;
  border-color: #FF5A4E;
}

/* ========== Hero ========== */
.hero { 
  min-height: 70vh; 
  display: flex; 
  align-items: center; 
  gap: 60px;
  padding-top: 110px;
  padding-bottom: 40px;
  flex-wrap: wrap;
  position: relative;
}

.hero::before {
  content: '本';
  position: absolute;
  right: 3%;
  top: 8%;
  font-size: clamp(6rem, 15vw, 14rem);
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 2px rgba(255, 90, 78, 0.12);
  transform: rotate(12deg);
  z-index: 0;
  pointer-events: none;
  font-family: 'Songti SC', 'SimSun', serif;
  line-height: 1;
}

.hero-content { 
  max-width: 720px; 
  position: relative;
  z-index: 1;
  flex: 1 1 480px;
}

.hero-eyebrow { 
  display: inline-block; 
  font-size: 0.78rem; 
  font-weight: 800; 
  padding: 6px 18px; 
  margin-bottom: 20px; 
  background: #F0A93B;
  color: #2D2A26;
  border: 2px solid #2D2A26;
  box-shadow: 3px 3px 0 #2D2A26;
  transform: rotate(-2deg);
  letter-spacing: 0.08em;
  border-radius: 0;
}

.hero h1 { 
  font-size: clamp(2.2rem, 5vw, 4.2rem); 
  line-height: 1.15; 
  font-weight: 900;
  margin-bottom: 22px;
  letter-spacing: -0.015em;
  color: #2D2A26;
}

.hero h1 .text-accent {
  background-image: linear-gradient(transparent 55%, #FFE3B0 55%);
  padding: 0 6px;
  font-weight: 900;
}

.hero p { 
  font-size: 1.08rem; 
  color: #6B5F4E;
  max-width: 560px; 
  margin-bottom: 36px;
  font-weight: 400;
  line-height: 1.85;
}

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

.hero-image { 
  border-radius: 0; 
  overflow: hidden;
  border: 3px solid #2D2A26;
  box-shadow: 10px 10px 0 #FF5A4E;
  transform: rotate(1.5deg);
  background: #FFFDF8;
  padding: 10px;
  position: relative;
  flex: 1 1 380px;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.4s ease;
}

.hero-image:hover {
  transform: rotate(0deg) translateY(-4px);
  box-shadow: 14px 14px 0 #F0A93B;
}

.hero-image::before {
  content: '✦ 本子手帐';
  position: absolute;
  top: -1px;
  left: 24px;
  background: #F0A93B;
  color: #2D2A26;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 4px 14px;
  border: 1.5px solid #2D2A26;
  border-top: none;
  z-index: 2;
  letter-spacing: 0.05em;
}

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

/* ========== 按钮 ========== */
.btn { 
  display: inline-flex; 
  align-items: center; 
  gap: 8px; 
  padding: 14px 30px; 
  border-radius: 0; 
  font-weight: 700; 
  cursor: pointer; 
  border: none; 
  text-decoration: none; 
  transition: all 0.25s cubic-bezier(0.22, 1, 0.36, 1); 
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  position: relative;
  line-height: 1.4;
}

.btn-primary { 
  background: #FF5A4E; 
  color: #fff; 
  border: 2.5px solid #2D2A26;
  box-shadow: 5px 5px 0 #2D2A26;
}

.btn-primary:hover {
  transform: translate(3px, 3px);
  box-shadow: 2px 2px 0 #2D2A26;
  background: #E8473B;
}

.btn-outline { 
  background: transparent; 
  border: 2.5px solid #2D2A26; 
  color: #2D2A26;
  box-shadow: 5px 5px 0 #2D2A26;
}

.btn-outline:hover {
  background: #2D2A26;
  color: #FAF5EC;
  transform: translate(3px, 3px);
  box-shadow: 2px 2px 0 #2D2A26;
}

/* ========== 标签/标题 ========== */
.section-label { 
  display: inline-block; 
  font-size: 0.78rem; 
  font-weight: 800; 
  letter-spacing: 3px; 
  margin-bottom: 16px; 
  color: #FF5A4E;
  padding: 4px 0;
  border-bottom: 3px solid #FF5A4E;
  position: relative;
  text-transform: uppercase;
}

.section-title { 
  font-size: clamp(1.6rem, 3vw, 2.4rem); 
  margin-bottom: 16px; 
  font-weight: 900;
  letter-spacing: -0.01em;
  color: #2D2A26;
  position: relative;
  line-height: 1.25;
}

.section-desc { 
  max-width: 600px; 
  color: #6B5F4E;
  margin-bottom: 44px; 
  line-height: 1.75;
  font-size: 0.98rem;
}

/* ========== 卡片网格 ========== */
.cards-grid { 
  display: grid; 
  grid-template-columns: repeat(auto-fill,minmax(260px,1fr)); 
  gap: 30px; 
}

.category-card { 
  border-radius: 0; 
  padding: 30px 28px; 
  border: 2.5px solid #2D2A26;
  background: #FFFDF8;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1); 
  box-shadow: 5px 5px 0 #2D2A26;
  position: relative;
}

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

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

.category-card:nth-child(3n) { 
  box-shadow: 5px 5px 0 #147D7D; 
}

.category-card:nth-child(4n) { 
  box-shadow: 5px 5px 0 #F0A93B; 
}

.category-card:hover { 
  transform: translate(-4px, -4px) rotate(0deg); 
  box-shadow: 10px 10px 0 #FF5A4E; 
}

.card-icon { 
  width: 50px; 
  height: 50px; 
  border-radius: 8px; 
  border: 2px solid #2D2A26;
  display: flex; 
  align-items: center; 
  justify-content: center; 
  margin-bottom: 18px; 
  font-size: 1.3rem; 
  background: #FFE3B0;
  box-shadow: 2px 2px 0 rgba(45, 42, 38, 0.25);
}

.category-card:nth-child(1) .card-icon { background: #FFE3B0; }
.category-card:nth-child(2) .card-icon { background: #D3EDE7; }
.category-card:nth-child(3) .card-icon { background: #FFE0D7; }
.category-card:nth-child(4) .card-icon { background: #E6E0F5; }

.card-link { 
  font-weight: 700; 
  font-size: 0.85rem; 
  text-decoration: none; 
  color: #FF5A4E;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  transition: gap 0.25s ease, color 0.2s ease;
}

.card-link:hover { 
  gap: 12px; 
  color: #2D2A26; 
}

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

.feature-image { 
  border-radius: 0; 
  overflow: hidden; 
  border: 3px solid #2D2A26;
  box-shadow: 8px 8px 0 #F0A93B;
  background: #FFFDF8;
  padding: 8px;
  position: relative;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease;
}

.feature-image:hover {
  transform: translate(-3px, -3px);
  box-shadow: 12px 12px 0 #147D7D;
}

.feature-image::before {
  content: '';
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%) rotate(-2deg);
  width: 110px;
  height: 24px;
  background: rgba(255, 90, 78, 0.7);
  z-index: 2;
  border: 1.5px solid rgba(45, 42, 38, 0.25);
  pointer-events: none;
  backdrop-filter: blur(2px);
}

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

.feature-text { 
  font-size: 1rem;
}

.feature-text p {
  color: #6B5F4E;
  margin-bottom: 20px;
  line-height: 1.85;
}

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

.feature-list li { 
  padding: 8px 0; 
  display: flex; 
  align-items: center; 
  gap: 12px; 
  font-weight: 500;
  font-size: 0.95rem;
}

.feature-list li::before { 
  content: '✓'; 
  font-weight: 900; 
  color: #147D7D;
  background: #D3EDE7;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  border: 2px solid #147D7D;
  flex-shrink: 0;
}

/* ========== 数据条 ========== */
.stats-bar { 
  display: grid; 
  grid-template-columns: repeat(4,1fr); 
  gap: 26px; 
  text-align: center; 
}

.stat-item { 
  padding: 34px 20px; 
  border-radius: 0; 
  border: 2.5px solid #2D2A26;
  background: #FFFDF8;
  box-shadow: 6px 6px 0 #2D2A26;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
}

.stat-item:nth-child(2) { 
  transform: rotate(1deg); 
}

.stat-item:nth-child(3) { 
  transform: rotate(-1deg); 
}

.stat-item:nth-child(4) { 
  transform: rotate(0.5deg); 
}

.stat-item:hover {
  transform: translate(-4px, -4px) rotate(0deg);
  box-shadow: 10px 10px 0 #FF5A4E;
}

.stat-number { 
  font-size: 3rem; 
  font-weight: 900; 
  line-height: 1;
  color: #FF5A4E;
  letter-spacing: -0.03em;
  display: inline-block;
}

.stat-item:nth-child(2) .stat-number { color: #147D7D; }
.stat-item:nth-child(3) .stat-number { color: #F0A93B; }
.stat-item:nth-child(4) .stat-number { color: #2D2A26; }

.stat-label { 
  font-size: 0.85rem; 
  color: #6B5F4E;
  margin-top: 10px; 
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* ========== 内容墙 ========== */
.content-wall { 
  display: grid; 
  grid-template-columns: repeat(auto-fill,minmax(280px,1fr)); 
  gap: 30px; 
}

.content-wall-item { 
  border-radius: 0; 
  overflow: hidden; 
  border: 2.5px solid #2D2A26;
  background: #FFFDF8;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: 4px 4px 0 rgba(45, 42, 38, 0.18);
}

.content-wall-item:nth-child(even) { 
  transform: rotate(0.4deg); 
}

.content-wall-item:nth-child(odd) { 
  transform: rotate(-0.4deg); 
}

.content-wall-item:hover { 
  transform: translate(-4px, -4px) rotate(0deg); 
  box-shadow: 8px 8px 0 #F0A93B; 
}

.content-wall-item img { 
  width: 100%; 
  height: 200px; 
  object-fit: cover; 
  border-bottom: 2.5px solid #2D2A26;
  filter: saturate(95%);
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1), filter 0.3s;
}

.content-wall-item:hover img {
  transform: scale(1.03);
  filter: saturate(105%);
}

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

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: #2D2A26;
  line-height: 1.4;
}

.content-wall-body p {
  font-size: 0.9rem;
  color: #6B5F4E;
  line-height: 1.65;
}

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

.faq-item { 
  border: 2.5px solid #2D2A26; 
  border-radius: 0; 
  margin-bottom: 14px; 
  overflow: hidden; 
  cursor: pointer; 
  background: #FFFDF8;
  box-shadow: 4px 4px 0 rgba(45, 42, 38, 0.15);
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.faq-item:hover {
  box-shadow: 6px 6px 0 #F0A93B;
  transform: translateY(-2px);
}

.faq-item.open {
  box-shadow: 6px 6px 0 #FF5A4E;
}

.faq-item .faq-question { 
  padding: 18px 24px; 
  font-weight: 700; 
  display: flex; 
  justify-content: space-between; 
  align-items: center;
  font-size: 1rem;
  color: #2D2A26;
  transition: 0.2s;
  gap: 16px;
  cursor: pointer;
}

.faq-item .faq-question::after {
  content: '+';
  width: 28px;
  height: 28px;
  background: #FFFDF8;
  border: 2px solid #2D2A26;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  line-height: 1;
  font-weight: 700;
  color: #FF5A4E;
  flex-shrink: 0;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
  background: #FF5A4E;
  color: #fff;
  border-color: #FF5A4E;
}

.faq-item .faq-answer { 
  padding: 0 24px 20px; 
  display: none; 
  color: #6B5F4E;
  line-height: 1.75;
  font-size: 0.95rem;
}

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

/* ========== CTA横幅 ========== */
.cta-banner { 
  padding: 64px 48px; 
  text-align: center; 
  border-radius: 0; 
  color: #fff; 
  background: linear-gradient(135deg, #FF5A4E 0%, #E8473B 55%, #F0A93B 100%);
  border: 3px solid #2D2A26;
  box-shadow: 10px 10px 0 #2D2A26;
  position: relative;
  overflow: hidden;
  transform: rotate(-0.5deg);
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.cta-banner:hover {
  transform: rotate(0deg);
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.18) 1px, transparent 1px);
  background-size: 22px 22px;
  pointer-events: none;
}

.cta-banner h2 { 
  color: #fff; 
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 900;
  margin-bottom: 16px;
  position: relative;
  line-height: 1.3;
  text-shadow: 2px 2px 0 rgba(45, 42, 38, 0.25);
}

.cta-banner h2::after {
  content: ' ✦';
  font-size: 0.8em;
  text-shadow: none;
}

.cta-banner p {
  position: relative;
  color: rgba(255,255,255,0.9);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.cta-banner .btn-primary { 
  background: #fff; 
  color: #FF5A4E;
  position: relative;
  border-color: #2D2A26;
  box-shadow: 5px 5px 0 #2D2A26;
}

.cta-banner .btn-primary:hover {
  background: #2D2A26;
  color: #fff;
  transform: translate(3px, 3px);
  box-shadow: 2px 2px 0 #2D2A26;
}

/* ========== 页脚 ========== */
.site-footer { 
  padding: 64px 0 28px; 
  background: #EAE1D3;
  border-top: 3px solid #2D2A26;
  position: relative;
  margin-top: 100px;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -3px;
  left: 0;
  right: 0;
  height: 3px;
  background: repeating-linear-gradient(90deg, #2D2A26 0 6px, #EAE1D3 6px 18px);
  pointer-events: none;
}

.site-footer .container { }

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

.footer-brand { 
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-brand .logo {
  font-size: 1.3rem;
}

.footer-brand .logo-icon {
  animation: none;
}

.footer-brand p {
  color: #6B5F4E;
  font-size: 0.9rem;
  max-width: 260px;
  line-height: 1.75;
}

.footer-col { 
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 800;
  color: #2D2A26;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
  padding-bottom: 10px;
  border-bottom: 2px dashed #CBC0AC;
}

.footer-col a {
  color: #54504A;
  text-decoration: none;
  font-size: 0.9rem;
  opacity: 0.85;
  transition: color 0.2s, transform 0.2s, opacity 0.2s;
  width: fit-content;
}

.footer-col a:hover {
  color: #FF5A4E;
  opacity: 1;
  transform: translateX(5px);
}

.footer-bottom { 
  border-top: 2px dashed #CBC0AC; 
  margin-top: 48px; 
  padding-top: 22px; 
  text-align: center; 
  font-size: 0.85rem; 
  color: #6B5F4E;
  letter-spacing: 0.02em;
}

.footer-bottom span {
  color: #FF5A4E;
  font-weight: 700;
}

/* ========== 工具类 ========== */
.text-accent { 
  background-image: linear-gradient(transparent 55%, #FFE3B0 55%);
  padding: 0 4px;
  color: #2D2A26;
  font-weight: 700;
}

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

.seo-description { 
  max-width: 600px; 
  margin: 0 auto 48px; 
  color: #6B5F4E;
  line-height: 1.75;
  font-size: 0.98rem;
}

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

/* 居中标题下划线装饰 */
.section-title.text-center {
  margin-left: auto;
  margin-right: auto;
}

.section-title.text-center::after {
  content: '';
  display: block;
  width: 42px;
  height: 4px;
  background: #FF5A4E;
  margin: 14px auto 0;
  border-radius: 2px;
  box-shadow: 2px 2px 0 rgba(45, 42, 38, 0.2);
}

/* ========== 响应式 ========== */
@media (max-width: 900px) {
  .hero {
    gap: 44px;
    padding-top: 110px;
    padding-bottom: 30px;
  }
  
  .hero::before {
    font-size: 8rem;
    right: 2%;
    top: 4%;
  }
  
  .feature-block { 
    grid-template-columns: 1fr; 
    gap: 48px;
  }
  
  .stats-bar { 
    gap: 20px;
  }
  
  .cta-banner {
    padding: 52px 32px;
  }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section:nth-child(even) { padding: 72px 0; }
  
  .feature-block { grid-template-columns: 1fr; }
  .stats-bar { 
    grid-template-columns: repeat(2,1fr); 
    gap: 20px;
  }
  
  .footer-grid { 
    grid-template-columns: 1fr 1fr; 
    gap: 36px; 
  }
  
  .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: rgba(250, 245, 236, 0.98); 
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 24px 24px 32px; 
    gap: 20px;
    border-bottom: 2px dashed #D4CAB6;
    box-shadow: 0 16px 32px rgba(45, 42, 38, 0.08);
    z-index: 999;
  }
  
  .main-nav.open a {
    font-size: 1.05rem;
    padding: 10px 0;
    border-bottom: 1px dashed rgba(45, 42, 38, 0.1);
  }
  
  .main-nav.open a:last-child {
    border-bottom: none;
  }
  
  .main-nav.open a::after {
    display: none;
  }
  
  .main-nav.open .nav-cta {
    text-align: center;
    margin-top: 10px;
    width: 100%;
  }
  
  .hero {
    flex-direction: column;
    text-align: left;
    padding-top: 110px;
    gap: 48px;
  }
  
  .hero p {
    margin-left: 0;
  }
  
  .hero-image {
    width: 100%;
    max-width: 520px;
    margin: 0 auto;
    box-shadow: 8px 8px 0 #FF5A4E;
  }
  
  .hero-image:hover {
    box-shadow: 10px 10px 0 #F0A93B;
  }
  
  .cta-banner {
    padding: 48px 28px;
    box-shadow: 7px 7px 0 #2D2A26;
  }
  
  .site-footer {
    margin-top: 80px;
    padding: 52px 0 24px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 20px;
  }
  
  .cards-grid,
  .content-wall,
  .stats-bar { grid-template-columns: 1fr; }
  
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  
  .hero-buttons { 
    flex-direction: column; 
    width: 100%;
  }
  
  .hero-buttons .btn {
    justify-content: center;
    width: 100%;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .stat-item:nth-child(2),
  .stat-item:nth-child(3),
  .stat-item:nth-child(4) {
    transform: none;
  }
  
  .stat-item:hover {
    transform: translate(-3px, -3px);
  }
  
  .stat-number {
    font-size: 2.4rem;
  }
  
  .cta-banner h2 {
    font-size: 1.45rem;
  }
  
  .cta-banner {
    padding: 40px 20px;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .section-desc {
    margin-bottom: 32px;
  }
  
  .feature-image {
    box-shadow: 6px 6px 0 #F0A93B;
  }
  
  .feature-image:hover {
    box-shadow: 8px 8px 0 #147D7D;
  }
  
  .content-wall-item img {
    height: 180px;
  }
  
  .footer-bottom {
    margin-top: 36px;
    font-size: 0.78rem;
  }
}

/* ========== 动画 ========== */
@keyframes floatY {
  0%, 100% { transform: translateY(0) rotate(1.5deg); }
  50% { transform: translateY(-8px) rotate(1.5deg); }
}

@keyframes shadowPulse {
  0%, 100% { box-shadow: 5px 5px 0 #2D2A26; }
  50% { box-shadow: 7px 7px 0 #FF5A4E; }
}

/* 轻量动效 */
.category-card {
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.3s ease;
}

.stat-number {
  font-variant-numeric: tabular-nums;
}

/* 选择文本配色 */
::selection {
  background: #FFE3B0;
  color: #2D2A26;
}

/* 滚动条 */
::-webkit-scrollbar {
  width: 10px;
  background: #F1EADF;
}

::-webkit-scrollbar-thumb {
  background: #D4CAB6;
  border: 2px solid #F1EADF;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #FF5A4E;
}