/* 基础重置 — 书法墨色流体系统 */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'STKaiti', 'KaiTi', '楷体', system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: #fdfbf7;
  color: #3d3a35;
  line-height: 1.75;
  letter-spacing: 0.02em;
}

/* 核心布局 */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section { padding: 100px 0; position: relative; }

.section:nth-child(even) { background: #f8f5ef; }

/* 导航 — 宣纸浮笺 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(253, 251, 247, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 2px solid #e8e0d0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  font-size: 1.35rem;
  text-decoration: none;
  color: #344e5c;
  letter-spacing: 0.06em;
  transition: all 0.3s ease;
}

.logo:hover {
  color: #c7685e;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: linear-gradient(135deg, #e8a598 0%, #c7685e 100%);
  color: #fdfbf7;
  box-shadow: 0 4px 20px rgba(199, 104, 94, 0.35);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #344e5c;
  position: relative;
  transition: color 0.3s ease;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: #c7685e;
  transition: width 0.3s ease;
}

.main-nav a:hover {
  color: #c7685e;
}

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

.nav-cta {
  padding: 10px 28px;
  border-radius: 40px;
  color: #fff !important;
  font-weight: 700;
  background: linear-gradient(135deg, #c7685e, #e8a598);
  box-shadow: 0 4px 20px rgba(199, 104, 94, 0.3);
  transition: all 0.3s ease !important;
}

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

.nav-cta:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 30px rgba(199, 104, 94, 0.4);
  color: #fff !important;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 50%;
  background: linear-gradient(135deg, #e8a598, #c7685e);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #fff;
  font-size: 1.2rem;
  box-shadow: 0 4px 16px rgba(199, 104, 94, 0.3);
}

/* 首页Hero — 水墨晕染 */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 90% 20%, rgba(232, 165, 152, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 15% 80%, rgba(52, 78, 92, 0.08) 0%, transparent 40%),
    #fdfbf7;
}

.hero::before {
  content: '漫';
  position: absolute;
  top: 45%;
  right: 5%;
  font-size: 28rem;
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 2px rgba(199, 104, 94, 0.1);
  line-height: 1;
  pointer-events: none;
  transform: rotate(12deg);
  font-family: 'STKaiti', 'KaiTi', '楷体', serif;
  z-index: 0;
}

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

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 30px;
  margin-bottom: 18px;
  letter-spacing: 0.14em;
  background: linear-gradient(135deg, rgba(232, 165, 152, 0.2), rgba(199, 104, 94, 0.2));
  color: #c7685e;
  border: 1px solid rgba(199, 104, 94, 0.3);
}

.hero h1 {
  font-size: 3.6rem;
  line-height: 1.2;
  margin-bottom: 22px;
  font-weight: 900;
  letter-spacing: 0.03em;
  color: #344e5c;
}

.hero h1 .accent {
  color: #c7685e;
  position: relative;
  display: inline-block;
}

.hero h1 .accent::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 12px;
  background: linear-gradient(135deg, rgba(232, 165, 152, 0.4), transparent);
  z-index: -1;
}

.hero p {
  font-size: 1.12rem;
  opacity: 0.72;
  max-width: 540px;
  margin-bottom: 36px;
  letter-spacing: 0.05em;
}

.hero-buttons {
  display: flex;
  gap: 18px;
}

.hero-image {
  border-radius: 20px;
  overflow: hidden;
  position: absolute;
  top: 55%;
  right: 0;
  width: 520px;
  transform: translateY(-50%);
  z-index: 1;
  box-shadow: 0 24px 60px rgba(52, 78, 92, 0.2);
  border: 6px solid #fdfbf7;
  rotate: 4deg;
}

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

/* 按钮 — 水墨胶囊 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 40px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  letter-spacing: 0.06em;
  font-size: 0.95rem;
  font-family: 'STKaiti', 'KaiTi', '楷体', system-ui, sans-serif;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #344e5c, #2c3e50);
  box-shadow: 0 8px 28px rgba(52, 78, 92, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 36px rgba(52, 78, 92, 0.45);
}

.btn-outline {
  background: transparent;
  border: 2px solid #c7685e;
  color: #c7685e;
}

.btn-outline:hover {
  background: linear-gradient(135deg, #c7685e, #e8a598);
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(199, 104, 94, 0.35);
}

/* 标签/标题 — 朱砂印章 */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  margin-bottom: 14px;
  color: #c7685e;
  position: relative;
  padding-left: 12px;
  text-transform: uppercase;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 2px;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, #c7685e, #e8a598);
  border-radius: 2px;
}

.section-title {
  font-size: 2.4rem;
  margin-bottom: 16px;
  font-weight: 900;
  color: #344e5c;
  letter-spacing: 0.04em;
  line-height: 1.3;
}

.section-desc {
  max-width: 640px;
  opacity: 0.68;
  margin-bottom: 44px;
  font-size: 1.05rem;
  line-height: 1.8;
}

/* 卡片网格 — 古风书签 */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 24px;
}

.category-card {
  border-radius: 16px;
  padding: 32px 28px;
  border: 1px solid #e8e0d0;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(8px);
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: linear-gradient(180deg, #c7685e, #e8a598);
  transition: height 0.35s ease;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(52, 78, 92, 0.12);
  border-color: rgba(199, 104, 94, 0.3);
}

.category-card:hover::before {
  height: 100%;
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.5rem;
  background: linear-gradient(135deg, rgba(232, 165, 152, 0.5), rgba(199, 104, 94, 0.3));
}

.card-link {
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  color: #c7685e;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s ease;
  margin-top: 12px;
}

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

/* 特性块 — 左右卷轴 */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.feature-image {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(52, 78, 92, 0.15);
  border: 4px solid #fff;
  transform: rotate(-2deg);
  transition: transform 0.5s ease;
}

.feature-image:hover {
  transform: rotate(0deg) scale(1.02);
}

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

.feature-text {
  position: relative;
}

.feature-text h3 {
  font-size: 2rem;
  margin-bottom: 16px;
  color: #344e5c;
  font-weight: 900;
  line-height: 1.3;
}

.feature-text p {
  opacity: 0.7;
  margin-bottom: 24px;
  line-height: 1.8;
}

.feature-list {
  list-style: none;
  margin-bottom: 28px;
}

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: #556052;
}

.feature-list li::before {
  content: '✦';
  font-weight: 700;
  color: #c7685e;
  font-size: 1.1rem;
}

/* 数据条 — 古典柱状 */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 32px 20px;
  border-radius: 16px;
  border: 1px solid rgba(232, 224, 208, 0.8);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(8px);
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 4px;
  background: linear-gradient(90deg, #c7685e, #e8a598);
  transition: width 0.4s ease;
  border-radius: 2px;
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(52, 78, 92, 0.1);
}

.stat-item:hover::after {
  width: 60%;
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 900;
  background: linear-gradient(135deg, #344e5c, #c7685e);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.92rem;
  opacity: 0.65;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.content-wall-item {
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(232, 224, 208, 0.9);
  background: #fff;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
}

.content-wall-item:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 24px 50px rgba(52, 78, 92, 0.18);
  border-color: rgba(199, 104, 94, 0.3);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.content-wall-item:hover img {
  transform: scale(1.05);
}

.content-wall-body {
  padding: 24px 22px;
}

.content-wall-body h4 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: #344e5c;
  font-weight: 800;
}

.content-wall-body p {
  font-size: 0.9rem;
  opacity: 0.65;
  line-height: 1.6;
  margin-bottom: 12px;
}

.content-wall-body .tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 30px;
  background: linear-gradient(135deg, rgba(232, 165, 152, 0.25), rgba(199, 104, 94, 0.15));
  color: #c7685e;
  letter-spacing: 0.05em;
  margin-right: 6px;
  margin-bottom: 6px;
}

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

.faq-item {
  border: 1px solid #e8e0d0;
  border-radius: 14px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(6px);
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(199, 104, 94, 0.4);
  box-shadow: 0 8px 24px rgba(52, 78, 92, 0.08);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #344e5c;
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  transition: color 0.3s ease;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 400;
  color: #c7685e;
  transition: transform 0.3s ease;
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  opacity: 0.72;
  line-height: 1.8;
  border-top: 1px dashed rgba(52, 78, 92, 0.1);
  padding-top: 16px;
  margin-top: 0;
}

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

.faq-item.open .faq-answer {
  display: block;
  animation: fadeSlideIn 0.4s ease;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* CTA横幅 — 朱红宣纸 */
.cta-banner {
  padding: 70px 40px;
  text-align: center;
  border-radius: 24px;
  background: linear-gradient(135deg, #344e5c, #2c3e50 60%, #c7685e);
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(52, 78, 92, 0.35);
}

.cta-banner::before {
  content: '漫';
  position: absolute;
  font-size: 16rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.05);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  font-family: 'STKaiti', 'KaiTi', '楷体', serif;
}

.cta-banner h2 {
  color: #fff;
  position: relative;
  z-index: 1;
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 10px;
  letter-spacing: 0.05em;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 32px;
  position: relative;
  z-index: 1;
  font-size: 1.1rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #344e5c;
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.25);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  box-shadow: 0 12px 40px rgba(255, 255, 255, 0.35);
}

/* 页脚 — 砚台 */
.site-footer {
  padding: 70px 0 30px;
  background: #f5f0e8;
  border-top: 2px solid #e8e0d0;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 44px;
}

.footer-brand {
  padding-right: 30px;
}

.footer-brand .logo {
  font-size: 1.3rem;
  margin-bottom: 16px;
}

.footer-brand p {
  opacity: 0.65;
  line-height: 1.9;
  font-size: 0.95rem;
}

.footer-col h4 {
  font-size: 1.1rem;
  font-weight: 800;
  color: #344e5c;
  margin-bottom: 18px;
  letter-spacing: 0.05em;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  text-decoration: none;
  opacity: 0.65;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  color: #556052;
}

.footer-col ul li a:hover {
  opacity: 1;
  color: #c7685e;
  padding-left: 6px;
}

.footer-bottom {
  border-top: 1px solid rgba(52, 78, 92, 0.12);
  margin-top: 48px;
  padding-top: 22px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.6;
  letter-spacing: 0.05em;
}

/* 工具类 */
.text-accent {
  color: #c7685e;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.72;
  line-height: 1.8;
}

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

/* 墨点装饰元素 */
.deco-dots {
  position: absolute;
  width: 200px;
  height: 200px;
  background-image: radial-gradient(rgba(199, 104, 94, 0.15) 2px, transparent 2px);
  background-size: 20px 20px;
  pointer-events: none;
  z-index: 0;
}

/* 响应式 */
@media (max-width: 992px) {
  .hero h1 { font-size: 2.8rem; }
  .hero-image { position: relative; top: auto; right: auto; width: 100%; transform: none; margin-top: 40px; rotate: 0deg; }
  .hero { min-height: auto; padding: 120px 0 60px; flex-direction: column; }
  .hero::before { display: none; }
  .section-title { font-size: 2rem; }
}

@media (max-width: 768px) {
  .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;
    z-index: 1001;
  }
  
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: rgba(253, 251, 247, 0.98);
    padding: 28px 24px;
    gap: 20px;
    align-items: flex-start;
    border-bottom: 2px solid #e8e0d0;
    box-shadow: 0 20px 40px rgba(52, 78, 92, 0.1);
    backdrop-filter: blur(12px);
  }
  
  .main-nav.open a {
    font-size: 1.05rem;
    padding: 8px 0;
  }
  
  .main-nav.open a::after {
    display: none;
  }
  
  .main-nav.open .nav-cta {
    margin-top: 8px;
  }
}

@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: 2.2rem; }
  
  .hero { padding: 100px 0 50px; }
  
  .section { padding: 70px 0; }
  
  .btn { width: 100%; justify-content: center; }
  
  .cta-banner { padding: 50px 24px; }
  
  .cta-banner h2 { font-size: 1.6rem; }
  
  .footer-grid { gap: 32px; }
}