```css
/* ==========================================================
   AKEBONO — 朱墨明堂 · 原神本子bl 设计系统
   Genshin Doujinshi BL · 耽美万象
   ========================================================== */

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

:root {
  --paper: #faf5eb;
  --paper-deep: #f0e9da;
  --paper-light: #fffdf8;
  --ink: #2b3550;
  --vermilion: #d94f3d;
  --vermilion-dark: #c43d2c;
  --moss: #3d7a66;
  --gold: #d9a441;
  --gold-light: #f2d492;
  --border: rgba(43, 53, 80, 0.08);
  --shadow-sm: 0 2px 10px rgba(43, 53, 80, 0.05);
  --shadow-md: 0 10px 30px rgba(43, 53, 80, 0.09);
  --shadow-lg: 0 20px 50px rgba(43, 53, 80, 0.13);
  --radius: 16px;
  --ease: cubic-bezier(0.34, 1.2, 0.64, 1);
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background-color: var(--paper);
  background-image:
    radial-gradient(ellipse at 12% 8%, rgba(217, 79, 61, 0.05) 0%, transparent 45%),
    radial-gradient(ellipse at 88% 72%, rgba(217, 164, 65, 0.06) 0%, transparent 42%),
    radial-gradient(ellipse at 50% 45%, rgba(61, 122, 102, 0.035) 0%, transparent 55%);
  background-attachment: fixed;
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--vermilion); color: var(--paper-light); }
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--paper); }
::-webkit-scrollbar-thumb { background: rgba(217, 79, 61, 0.35); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--vermilion); }

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

.section { padding: 88px 0; position: relative; }
.section:nth-child(even) { background: var(--paper-deep); }

/* 导航 — 固定顶部 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(250, 245, 235, 0.92);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease;
}
.site-header:hover { box-shadow: var(--shadow-sm); }

.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: 800;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--ink);
  letter-spacing: 0.5px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--vermilion) 0%, #e0755a 60%, var(--gold) 130%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(217, 79, 61, 0.28);
  transform: rotate(-3deg);
  transition: transform 0.3s var(--ease);
}
.logo:hover .logo-icon { transform: rotate(6deg) scale(1.05); }

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

.main-nav a {
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--ink);
  opacity: 0.75;
  transition: 0.3s ease;
  position: relative;
  padding: 6px 2px;
}
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--vermilion);
  border-radius: 2px;
  transition: width 0.3s var(--ease);
}
.main-nav a:hover { opacity: 1; }
.main-nav a:hover::after { width: 100%; }

.nav-cta {
  padding: 9px 22px;
  border-radius: 10px;
  color: #fff !important;
  background: linear-gradient(135deg, var(--vermilion), #e8612e);
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(217, 79, 61, 0.28);
  opacity: 1 !important;
  transition: all 0.3s var(--ease) !important;
}
.nav-cta::after { display: none; }
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(217, 79, 61, 0.38);
  opacity: 1 !important;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: background 0.2s;
}
.menu-toggle:hover { background: rgba(217, 79, 61, 0.06); }
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: 0.3s ease;
}

/* Hero — 朱日浮世 */
.hero {
  min-height: 82vh;
  display: flex;
  align-items: center;
  gap: 60px;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}
.hero::before {
  content: '';
  position: absolute;
  width: 540px;
  height: 540px;
  right: -80px;
  top: 50%;
  transform: translateY(-50%);
  background: radial-gradient(circle, rgba(217, 79, 61, 0.10) 0%, rgba(217, 79, 61, 0.04) 55%, transparent 72%);
  border-radius: 50%;
  z-index: 0;
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 90px;
  background: linear-gradient(to top, var(--paper-deep) 0%, transparent 100%);
  opacity: 0.5;
  pointer-events: none;
  z-index: 0;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 4px;
  margin-bottom: 20px;
  background: var(--vermilion);
  color: #fff;
  letter-spacing: 3px;
  text-transform: uppercase;
  transform: rotate(-1.5deg);
  box-shadow: 0 3px 14px rgba(217, 79, 61, 0.3);
}

.hero h1 {
  font-size: 3.1rem;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -1px;
  color: var(--ink);
}
.hero h1 .text-accent {
  color: var(--vermilion);
  position: relative;
  display: inline-block;
}
.hero h1 .text-accent::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 100%;
  height: 8px;
  background: rgba(217, 164, 65, 0.35);
  z-index: -1;
  border-radius: 4px;
}

.hero p {
  font-size: 1.05rem;
  opacity: 0.65;
  max-width: 520px;
  margin-bottom: 34px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
  z-index: 1;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 4px solid rgba(255, 255, 255, 0.75);
  transform: rotate(1.5deg);
  transition: transform 0.5s var(--ease);
  background: var(--paper-light);
}
.hero-image:hover { transform: rotate(0deg) scale(1.02); }

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s var(--ease);
  font-size: 0.95rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--vermilion) 0%, #e8612e 100%);
  color: #fff;
  box-shadow: 0 6px 20px rgba(217, 79, 61, 0.3);
}
.btn-primary:hover {
  transform: translateY(-3px) rotate(-0.5deg);
  box-shadow: 0 10px 30px rgba(217, 79, 61, 0.4);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--ink);
  color: var(--ink);
  box-shadow: inset 0 0 0 0 rgba(217, 79, 61, 0);
}
.btn-outline:hover {
  border-color: var(--vermilion);
  color: var(--vermilion);
  background: rgba(217, 79, 61, 0.04);
  transform: translateY(-3px);
}

/* 标签 / 标题 */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 14px;
  color: var(--vermilion);
  text-transform: uppercase;
  position: relative;
  padding-left: 34px;
}
.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 24px;
  height: 2px;
  background: linear-gradient(to right, var(--vermilion), var(--gold));
  border-radius: 2px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.25;
  margin-bottom: 14px;
  color: var(--ink);
}

.section-desc {
  max-width: 640px;
  opacity: 0.6;
  margin-bottom: 44px;
  font-size: 0.98rem;
  line-height: 1.8;
}

/* 卡片网格 */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.category-card {
  background: var(--paper-light);
  border-radius: var(--radius);
  padding: 30px 26px;
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  transition: all 0.4s var(--ease);
}
.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--vermilion), var(--gold));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.category-card::after {
  content: '';
  position: absolute;
  bottom: -40px;
  right: -40px;
  width: 80px;
  height: 80px;
  background: radial-gradient(circle, rgba(217, 164, 65, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  transition: transform 0.5s var(--ease);
}
.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.category-card:hover::before { transform: scaleX(1); }
.category-card:hover::after { transform: scale(1.6); }

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 18px;
  background: linear-gradient(135deg, rgba(217, 79, 61, 0.1), rgba(217, 164, 65, 0.1));
  border: 1px solid rgba(217, 79, 61, 0.08);
  transition: 0.4s var(--ease);
}
.category-card:hover .card-icon {
  background: linear-gradient(135deg, var(--vermilion), #e8612e);
  transform: rotate(-6deg) scale(1.08);
  box-shadow: 0 8px 20px rgba(217, 79, 61, 0.25);
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--vermilion);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 14px;
  transition: gap 0.3s ease;
}
.card-link::after { content: '→'; transition: transform 0.3s ease; }
.card-link:hover { gap: 8px; }
.card-link:hover::after { transform: translateX(2px); }

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

.feature-image {
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-md);
  border: 3px solid rgba(255, 255, 255, 0.7);
}
.feature-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(217, 79, 61, 0.06), transparent 50%);
  pointer-events: none;
}
.feature-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s var(--ease);
}
.feature-image:hover img { transform: scale(1.03); }

.feature-text {
  position: relative;
  padding: 20px 0;
}

.feature-list {
  list-style: none;
  margin-top: 20px;
}
.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  line-height: 1.6;
}
.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: #fff;
  background: var(--moss);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(61, 122, 102, 0.25);
}

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

.stat-item {
  background: var(--paper-light);
  padding: 32px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  transition: all 0.4s var(--ease);
}
.stat-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--vermilion), var(--gold));
  border-radius: 0 0 4px 4px;
  transition: width 0.4s var(--ease);
}
.stat-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.stat-item:hover::before { width: 80%; }

.stat-number {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--vermilion);
  line-height: 1.1;
  letter-spacing: -2px;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.85rem;
  opacity: 0.55;
  margin-top: 8px;
  letter-spacing: 1px;
}

/* 内容墙 */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.content-wall-item {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--paper-light);
  transition: all 0.4s var(--ease);
  position: relative;
}
.content-wall-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}
.content-wall-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--vermilion), var(--gold));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.content-wall-item:hover::after { transform: scaleX(1); }

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}
.content-wall-item:hover img { transform: scale(1.06); }

.content-wall-body {
  padding: 22px;
}
.content-wall-body h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--ink);
}
.content-wall-body p {
  font-size: 0.85rem;
  opacity: 0.5;
  line-height: 1.6;
}

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

.faq-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--paper-light);
  transition: all 0.35s var(--ease);
}
.faq-item:hover { border-color: rgba(217, 79, 61, 0.25); }
.faq-item.open {
  border-color: rgba(217, 79, 61, 0.3);
  box-shadow: 0 4px 20px rgba(43, 53, 80, 0.07);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 600;
  font-size: 0.95rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  color: var(--ink);
  transition: color 0.3s;
}
.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--vermilion);
  transition: transform 0.4s var(--ease);
  margin-left: 16px;
}
.faq-item.open .faq-question { color: var(--vermilion); }
.faq-item.open .faq-question::after { transform: rotate(45deg); }

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  opacity: 0.65;
  font-size: 0.88rem;
  line-height: 1.7;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.faq-item.open .faq-answer { display: block; animation: fadeSlideIn 0.3s ease; }

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 0.65; transform: translateY(0); }
}

/* CTA 横幅 */
.cta-banner {
  padding: 60px 32px;
  text-align: center;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--vermilion) 0%, #e8612e 50%, var(--gold) 130%);
  box-shadow: 0 16px 48px rgba(217, 79, 61, 0.35);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 80% 60%, rgba(255, 255, 255, 0.08) 0%, transparent 45%);
  z-index: -1;
  pointer-events: none;
}
.cta-banner::after {
  content: '';
  position: absolute;
  top: -50px;
  left: -50px;
  width: 120px;
  height: 120px;
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  z-index: -1;
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, 20px) scale(1.1); }
}

.cta-banner h2 {
  color: #fff;
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 12px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
}
.cta-banner p {
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.95rem;
  margin-bottom: 28px;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--vermilion);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
  font-weight: 700;
}
.cta-banner .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.22);
}

/* 页脚 */
.site-footer {
  padding: 64px 0 28px;
  background: var(--paper-deep);
  border-top: 1px solid var(--border);
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent 0%, var(--gold) 20%, var(--vermilion) 50%, var(--gold) 80%, transparent 100%);
  opacity: 0.4;
}

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

.footer-brand {
  padding-right: 32px;
}
.footer-brand .logo { margin-bottom: 12px; }

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col h4 {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
  color: var(--ink);
  position: relative;
  padding-bottom: 8px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background: var(--vermilion);
  border-radius: 2px;
}
.footer-col a {
  text-decoration: none;
  font-size: 0.88rem;
  color: var(--ink);
  opacity: 0.65;
  transition: 0.3s;
  line-height: 1.8;
}
.footer-col a:hover { opacity: 1; color: var(--vermilion); padding-left: 4px; }

.footer-bottom {
  border-top: 1px solid rgba(43, 53, 80, 0.08);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(43, 53, 80, 0.45);
}

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

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

.seo-description {
  max-width: 620px;
  margin: 0 auto 48px;
  opacity: 0.6;
  font-size: 0.95rem;
  line-height: 1.75;
}

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

/* 响应式 */
@media (max-width: 992px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero { min-height: auto; padding: 100px 0 60px; }
  .hero h1 { font-size: 2.4rem; }
  .hero-image { max-width: 480px; }
  .feature-block { gap: 40px; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .feature-block { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }

  .main-nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--paper-light);
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    align-items: flex-start;
  }
  .main-nav.open {
    display: flex;
    animation: navIn 0.3s ease;
  }
  @keyframes navIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .main-nav li { width: 100%; }
  .main-nav a { display: block; padding: 10px 0; font-size: 1rem; }
  .nav-cta { display: inline-block; padding: 10px 20px; margin-top: 8px; }

  .menu-toggle { display: flex; }

  .hero-content { max-width: 100%; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 0.95rem; }
  .hero-buttons { flex-direction: row; }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { width: 100%; justify-content: center; }
  .hero h1 { font-size: 1.7rem; }
  .section-title { font-size: 1.6rem; }
  .cta-banner { padding: 44px 20px; }
  .cta-banner h2 { font-size: 1.4rem; }
  .hero-image { transform: rotate(0deg); border-width: 3px; }
  .stat-number { font-size: 2rem; }
}