/* ============================================================
   禁漫天堂 · 漫纸设计系统 Manga Paper Design System
   —— 以纸墨质感 × 漫画分格 × 硬边阴影构建的浅色视觉体系
   ============================================================ */

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

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  overflow-x:hidden;
  background-color:#F7F3EB;
  color:#1A1A1A;
  line-height:1.6;
  background-image:
    radial-gradient(circle at 15% 20%, rgba(230,69,69,0.04) 0, transparent 35%),
    radial-gradient(circle at 85% 75%, rgba(43,58,103,0.04) 0, transparent 30%);
}

/* ---- 纸张噪点纹理 ---- */
body::before {
  content:'';
  position:fixed;
  top:0; left:0;
  width:100%; height:100%;
  pointer-events:none;
  z-index:9999;
  opacity:0.03;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- 漫画网点背景 ---- */
body::after {
  content:'';
  position:fixed;
  top:0; left:0;
  width:100%; height:100%;
  pointer-events:none;
  z-index:0;
  background-image:radial-gradient(circle, rgba(26,26,26,0.05) 1px, transparent 1px);
  background-size:18px 18px;
  mask-image:linear-gradient(to bottom, black, transparent 35%, transparent 65%, black);
  opacity:0.5;
}

.container { max-width:1200px; margin:0 auto; padding:0 24px; position:relative; z-index:1; }

.section { padding:80px 0; position:relative; }
.section:nth-child(even) { background:#F0EADF; }

/* 章节顶部分割线 —— 漫画格子语汇 */
.section::before {
  content:'';
  position:absolute;
  top:0; left:0;
  width:100%;
  height:4px;
  background:repeating-linear-gradient(
    to right,
    #1A1A1A 0, #1A1A1A 14px,
    transparent 14px, transparent 28px
  );
  opacity:0.12;
}

/* ============================================================
   导航
   ============================================================ */
.site-header {
  position:fixed;
  top:0; left:0;
  width:100%;
  z-index:1000;
  background:rgba(247,243,235,0.93);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:2px solid #1A1A1A;
}

.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:#1A1A1A;
  letter-spacing:3px;
  white-space:nowrap;
}

.logo-icon {
  width:36px;
  height:36px;
  border-radius:6px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:0.95rem;
  background:#E64545;
  color:#FFF;
  border:2px solid #1A1A1A;
  box-shadow:3px 3px 0 #1A1A1A;
  transform:rotate(-6deg);
  transition:transform 0.2s;
}

.logo:hover .logo-icon { transform:rotate(0deg) scale(1.05); }

.main-nav {
  display:flex;
  align-items:center;
  gap:26px;
  list-style:none;
}

.main-nav a {
  text-decoration:none;
  font-size:0.9rem;
  font-weight:600;
  transition:0.2s;
  color:#1A1A1A;
  position:relative;
  letter-spacing:1px;
}

.main-nav a:not(.nav-cta)::after {
  content:'';
  position:absolute;
  bottom:-5px; left:0;
  width:0; height:2px;
  background:#E64545;
  transition:width 0.25s ease;
}

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

.nav-cta {
  padding:9px 24px;
  border-radius:0;
  background:#E64545;
  color:#FFF !important;
  font-weight:800;
  border:2px solid #1A1A1A;
  box-shadow:3px 3px 0 #1A1A1A;
  transition:0.15s ease;
}

.nav-cta:hover {
  transform:translate(2px,2px);
  box-shadow:1px 1px 0 #1A1A1A;
  background:#C93A3A;
}

.menu-toggle {
  display:none;
  width:42px; height:42px;
  background:#FFF;
  border:2px solid #1A1A1A;
  box-shadow:3px 3px 0 #1A1A1A;
  cursor:pointer;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
  padding:6px;
}

.menu-toggle span {
  display:block;
  width:18px;
  height:2px;
  background:#1A1A1A;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  min-height:74vh;
  display:flex;
  align-items:center;
  padding-top:80px;
  position:relative;
  background:
    linear-gradient(135deg, rgba(230,69,69,0.06) 0%, transparent 55%),
    linear-gradient(to right, transparent calc(100% - 38%), rgba(26,26,26,0.03) 100%);
  border-bottom:3px solid #1A1A1A;
}

.hero-content { max-width:760px; position:relative; }

.hero-eyebrow {
  display:inline-block;
  font-size:0.8rem;
  font-weight:800;
  padding:6px 18px;
  border-radius:0;
  background:#FFF;
  border:2px solid #1A1A1A;
  box-shadow:3px 3px 0 #1A1A1A;
  margin-bottom:22px;
  color:#E64545;
  letter-spacing:3px;
  text-transform:uppercase;
  transform:rotate(-1deg);
}

.hero h1 {
  font-size:3.2rem;
  line-height:1.15;
  margin-bottom:20px;
  font-weight:900;
  letter-spacing:-1px;
  text-transform:uppercase;
}

.hero h1 .text-accent {
  color:#E64545;
  position:relative;
  display:inline-block;
}

.hero h1 .text-accent::before {
  content:'';
  position:absolute;
  bottom:0; left:0;
  width:100%; height:10px;
  background:rgba(230,69,69,0.15);
  z-index:-1;
  transform:skewX(-12deg);
}

.hero p {
  font-size:1.15rem;
  opacity:0.72;
  max-width:560px;
  margin-bottom:34px;
  line-height:1.8;
}

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

/* Hero漫画贴士 —— 对话气泡式装饰 */
.hero-image {
  border-radius:0;
  overflow:hidden;
  border:3px solid #1A1A1A;
  box-shadow:8px 8px 0 rgba(230,69,69,0.2);
  transform:rotate(1deg);
}

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

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:13px 30px;
  border-radius:0;
  font-weight:800;
  font-size:0.95rem;
  letter-spacing:1px;
  cursor:pointer;
  border:2px solid #1A1A1A;
  text-decoration:none;
  transition:0.18s ease;
  background:transparent;
  color:#1A1A1A;
}

.btn-primary {
  background:#E64545;
  color:#FFF;
  box-shadow:4px 4px 0 #1A1A1A;
}

.btn-primary:hover {
  transform:translate(-2px,-2px);
  box-shadow:7px 7px 0 #1A1A1A;
  background:#D43C3C;
}

.btn-primary:active {
  transform:translate(2px,2px);
  box-shadow:1px 1px 0 #1A1A1A;
}

.btn-outline {
  background:#FFF;
  color:#1A1A1A;
  box-shadow:4px 4px 0 rgba(26,26,26,0.12);
}

.btn-outline:hover {
  background:#1A1A1A;
  color:#FFF;
  transform:translate(-2px,-2px);
  box-shadow:6px 6px 0 rgba(26,26,26,0.2);
}

/* ============================================================
   标签 / 标题
   ============================================================ */
.section-label {
  display:inline-block;
  font-size:0.8rem;
  font-weight:800;
  letter-spacing:4px;
  margin-bottom:14px;
  color:#E64545;
  text-transform:uppercase;
  position:relative;
  padding-left:24px;
}

.section-label::before {
  content:'';
  position:absolute;
  left:0; top:50%;
  width:16px;
  height:3px;
  background:#E64545;
  transform:translateY(-50%);
}

.section-title {
  font-size:2.4rem;
  margin-bottom:14px;
  font-weight:900;
  letter-spacing:-0.5px;
  line-height:1.25;
}

.section-desc {
  max-width:600px;
  opacity:0.7;
  margin-bottom:44px;
  font-size:1.05rem;
}

/* ============================================================
   卡片网格 —— 漫画书架
   ============================================================ */
.cards-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:28px;
}

.category-card {
  border-radius:0;
  padding:32px 28px;
  border:2px solid #1A1A1A;
  background:#FFF;
  transition:0.2s ease;
  position:relative;
  box-shadow:5px 5px 0 rgba(26,26,26,0.1);
  overflow:hidden;
}

.category-card::before {
  content:'';
  position:absolute;
  top:0; left:0;
  width:100%; height:6px;
  background:#E64545;
  transition:0.25s ease;
}

.category-card:nth-child(2n)::before { background:#2B3A67; }
.category-card:nth-child(3n)::before { background:#F0A868; }

.category-card:hover {
  transform:translate(-4px,-4px);
  box-shadow:10px 10px 0 rgba(26,26,26,0.14);
}

.category-card:hover::before { height:10px; }

.card-icon {
  width:52px;
  height:52px;
  border-radius:0;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:18px;
  font-size:1.4rem;
  background:#F0EADF;
  border:2px solid #1A1A1A;
  position:relative;
}

.category-card h3 {
  font-size:1.15rem;
  font-weight:800;
  margin-bottom:8px;
}

.category-card p {
  font-size:0.9rem;
  opacity:0.6;
  margin-bottom:14px;
}

.card-link {
  font-weight:700;
  font-size:0.85rem;
  text-decoration:none;
  color:#E64545;
  display:inline-flex;
  align-items:center;
  gap:4px;
  border-bottom:2px solid transparent;
  transition:border-color 0.2s;
}

.card-link::after {
  content:'→';
  font-size:1rem;
  transition:transform 0.2s ease;
}

.card-link:hover::after { transform:translateX(5px); }
.card-link:hover { border-bottom-color:#E64545; }

/* ============================================================
   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 #1A1A1A;
  box-shadow:9px 9px 0 rgba(43,58,103,0.18);
  transform:rotate(-1.5deg);
  transition:transform 0.35s ease, box-shadow 0.35s ease;
}

.feature-image:hover {
  transform:rotate(0deg) scale(1.01);
  box-shadow:12px 12px 0 rgba(43,58,103,0.22);
}

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

.feature-text { position:relative; }

/* 网点装饰 */
.feature-text::before {
  content:'';
  position:absolute;
  top:-24px; left:-24px;
  width:72px; height:72px;
  background-image:radial-gradient(circle, rgba(230,69,69,0.25) 18%, transparent 18%);
  background-size:22px 22px;
  background-position:0 0, 11px 11px;
  z-index:-1;
}

.feature-text .section-title {
  font-size:2rem;
  margin-bottom:14px;
}

.feature-text p { opacity:0.7; line-height:1.8; }

.feature-list {
  list-style:none;
  margin-top:22px;
}

.feature-list li {
  padding:9px 0;
  display:flex;
  align-items:center;
  gap:12px;
  font-weight:600;
  font-size:0.95rem;
  border-bottom:1px dashed rgba(26,26,26,0.14);
}

.feature-list li::before {
  content:'✓';
  font-weight:900;
  color:#E64545;
  font-size:1.15rem;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}

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

.stat-item {
  padding:34px 24px;
  border-radius:0;
  border:2px solid #1A1A1A;
  background:#FFF;
  box-shadow:5px 5px 0 rgba(26,26,26,0.1);
  transition:0.2s ease;
  position:relative;
  overflow:hidden;
}

/* 底部装饰条 */
.stat-item::after {
  content:'';
  position:absolute;
  bottom:0; left:0;
  width:100%;
  height:4px;
  background:#E64545;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform 0.3s ease;
}

.stat-item:hover {
  transform:translateY(-5px);
  box-shadow:8px 8px 0 rgba(230,69,69,0.18);
}

.stat-item:hover::after { transform:scaleX(1); }

.stat-number {
  font-size:2.5rem;
  font-weight:900;
  color:#E64545;
  line-height:1.2;
  display:inline-block;
}

.stat-number::after { content:'+'; }

.stat-label {
  font-size:0.9rem;
  opacity:0.62;
  margin-top:10px;
  font-weight:700;
  letter-spacing:2px;
  text-transform:uppercase;
}

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

.content-wall-item {
  border-radius:0;
  overflow:hidden;
  border:2px solid #1A1A1A;
  transition:0.2s ease;
  background:#FFF;
  box-shadow:4px 4px 0 rgba(26,26,26,0.1);
  position:relative;
  padding-top:0;
}

.content-wall-item::before {
  content:'';
  position:absolute;
  top:0; left:0;
  right:0;
  height:6px;
  background:repeating-linear-gradient(
    to right,
    #E64545 0, #E64545 12px,
    transparent 12px, transparent 18px
  );
  z-index:2;
}

.content-wall-item:nth-child(2n)::before {
  background:repeating-linear-gradient(
    to right,
    #2B3A67 0, #2B3A67 12px,
    transparent 12px, transparent 18px
  );
}

.content-wall-item:hover {
  transform:translate(-3px,-3px);
  box-shadow:8px 8px 0 rgba(230,69,69,0.2);
}

.content-wall-item img {
  width:100%;
  height:200px;
  object-fit:cover;
  display:block;
  border-bottom:2px solid #1A1A1A;
  transition:transform 0.35s ease;
}

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

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

.content-wall-body h3 {
  font-size:1.1rem;
  margin-bottom:8px;
  font-weight:800;
  line-height:1.4;
}

.content-wall-body p {
  font-size:0.9rem;
  opacity:0.6;
  line-height:1.6;
}

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

.faq-item {
  border:2px solid #1A1A1A;
  border-radius:0;
  margin-bottom:14px;
  overflow:hidden;
  cursor:pointer;
  background:#FFF;
  box-shadow:3px 3px 0 rgba(26,26,26,0.07);
  transition:0.2s ease;
}

.faq-item:hover {
  box-shadow:5px 5px 0 rgba(230,69,69,0.14);
  transform:translateX(2px);
}

.faq-item.open {
  box-shadow:6px 6px 0 rgba(230,69,69,0.18);
  border-color:#E64545;
}

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

.faq-item .faq-question::after {
  content:'+';
  font-size:1.6rem;
  font-weight:400;
  color:#E64545;
  flex-shrink:0;
  line-height:1;
  transition:transform 0.25s ease;
}

.faq-item.open .faq-question::after {
  content:'−';
  transform:rotate(0deg);
}

.faq-item .faq-answer {
  padding:0 22px 18px;
  display:none;
  opacity:0.72;
  border-top:1px dashed rgba(26,26,26,0.14);
  padding-top:14px;
  font-size:0.95rem;
  line-height:1.7;
}

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

/* ============================================================
   CTA横幅
   ============================================================ */
.cta-banner {
  padding:64px 40px;
  text-align:center;
  border-radius:0;
  background:#E64545;
  color:#FFF;
  border:3px solid #1A1A1A;
  box-shadow:9px 9px 0 #1A1A1A;
  position:relative;
  overflow:hidden;
}

/* 网点纹理叠加 */
.cta-banner::before {
  content:'';
  position:absolute;
  top:0; left:0;
  width:100%; height:100%;
  background-image:radial-gradient(circle, rgba(255,255,255,0.14) 15%, transparent 15%);
  background-size:16px 16px;
  background-position:0 0, 8px 8px;
  opacity:0.4;
}

.cta-banner h2 {
  color:#FFF;
  font-size:2.2rem;
  margin-bottom:12px;
  font-weight:900;
  text-shadow:3px 3px 0 rgba(0,0,0,0.15);
  position:relative;
  z-index:1;
}

.cta-banner p {
  color:rgba(255,255,255,0.92);
  margin-bottom:26px;
  font-size:1.05rem;
  position:relative;
  z-index:1;
}

.cta-banner .btn {
  background:#FFF;
  color:#E64545;
  border-color:#1A1A1A;
  box-shadow:4px 4px 0 #1A1A1A;
  position:relative;
  z-index:1;
}

.cta-banner .btn:hover {
  transform:translate(2px,2px);
  box-shadow:1px 1px 0 #1A1A1A;
}

/* ============================================================
   页脚 —— 保持浅色基底
   ============================================================ */
.site-footer {
  padding:56px 0 28px;
  background:#F0EADF;
  color:#1A1A1A;
  border-top:3px solid #1A1A1A;
  position:relative;
}

.site-footer::before {
  content:'';
  position:absolute;
  top:0; left:0;
  width:100%;
  height:3px;
  background:repeating-linear-gradient(
    to right,
    #E64545 0, #E64545 20px,
    #2B3A67 20px, #2B3A67 40px,
    #F0A868 40px, #F0A868 60px
  );
  opacity:0.8;
}

.footer-grid {
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:40px;
  padding-top:12px;
}

.footer-brand .logo {
  color:#1A1A1A;
  font-size:1.4rem;
  margin-bottom:12px;
}

.footer-brand .logo-icon {
  background:#E64545;
  color:#FFF;
  border-color:#1A1A1A;
}

.footer-brand p {
  margin-top:14px;
  opacity:0.65;
  font-size:0.9rem;
  max-width:280px;
  line-height:1.7;
}

.footer-col h4 {
  font-size:0.85rem;
  font-weight:800;
  margin-bottom:16px;
  color:#1A1A1A;
  text-transform:uppercase;
  letter-spacing:3px;
  border-bottom:2px solid #1A1A1A;
  padding-bottom:8px;
  display:inline-block;
}

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

.footer-col ul li { padding:6px 0; }

.footer-col ul li a {
  color:rgba(26,26,26,0.65);
  text-decoration:none;
  font-size:0.9rem;
  transition:0.2s ease;
  position:relative;
  padding-left:0;
}

.footer-col ul li a:hover {
  color:#E64545;
  padding-left:6px;
}

.footer-bottom {
  border-top:1px solid rgba(26,26,26,0.15);
  margin-top:44px;
  padding-top:22px;
  text-align:center;
  font-size:0.85rem;
  opacity:0.55;
  letter-spacing:1px;
}

/* ============================================================
   工具类
   ============================================================ */
.text-accent { color:#E64545; }

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

.seo-description {
  max-width:600px;
  margin:0 auto 48px;
  opacity:0.7;
  line-height:1.8;
}

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

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 768px) {
  .feature-block { grid-template-columns:1fr; gap:40px; }
  .feature-text::before { top:-16px; left:-12px; }

  .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;
    align-items:stretch;
    position:absolute;
    top:72px;
    left:0;
    width:100%;
    background:#F7F3EB;
    padding:24px;
    border-bottom:3px solid #1A1A1A;
    gap:18px;
    box-shadow:0 10px 20px rgba(0,0,0,0.08);
  }

  .main-nav.open a { font-size:1.05rem; }

  .nav-cta {
    text-align:center;
    display:block;
  }

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

  .hero::after { display:none; }

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

  .cta-banner { padding:48px 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; }

  .hero h1 { font-size:1.9rem; }

  .section-title { font-size:1.6rem; }

  .section { padding:56px 0; }

  .hero { min-height:auto; padding:110px 0 60px; }

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