@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;500;600;700&family=Josefin+Sans:wght@300;400;500;600;700&display=swap');

/* ===== 基础变量 ===== */
:root {
  --black: #000000;
  --panel: #121212;
  --surface: #1a1a1a;
  --surface2: #222222;
  --border: #2a2a2a;
  --border-light: #333333;
  --text-primary: #ffffff;
  --text-secondary: #c8c8c8;
  --text-muted: #888888;
  --accent-blue: #3a6fd8;
  --accent-blue-light: #5b8dee;
  --accent-gold: #c9a84c;
  --accent-glow: rgba(58, 111, 216, 0.3);
  --font-display: 'Cinzel', 'Georgia', serif;
  --font-body: 'Josefin Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --radius: 10px;
  --radius-sm: 6px;
  --transition: 0.25s ease;
  --nav-h: 112px;
}

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

html {
  color-scheme: dark;
  scroll-behavior: smooth;
}

body {
  background: var(--black);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ===== 星点底纹 ===== */
.stars-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(1px 1px at 15% 20%, rgba(255,255,255,0.35) 0%, transparent 100%),
    radial-gradient(1px 1px at 42% 8%, rgba(255,255,255,0.25) 0%, transparent 100%),
    radial-gradient(1px 1px at 68% 35%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 85% 12%, rgba(255,255,255,0.2) 0%, transparent 100%),
    radial-gradient(1px 1px at 28% 55%, rgba(255,255,255,0.2) 0%, transparent 100%),
    radial-gradient(1px 1px at 92% 60%, rgba(255,255,255,0.25) 0%, transparent 100%),
    radial-gradient(1px 1px at 7% 78%, rgba(255,255,255,0.15) 0%, transparent 100%),
    radial-gradient(1px 1px at 55% 70%, rgba(255,255,255,0.2) 0%, transparent 100%),
    radial-gradient(1px 1px at 73% 88%, rgba(255,255,255,0.15) 0%, transparent 100%),
    radial-gradient(1px 1px at 33% 92%, rgba(255,255,255,0.18) 0%, transparent 100%),
    radial-gradient(2px 2px at 50% 45%, rgba(58,111,216,0.2) 0%, transparent 100%),
    radial-gradient(2px 2px at 20% 40%, rgba(58,111,216,0.15) 0%, transparent 100%);
}

/* ===== 链接 ===== */
a {
  color: var(--accent-blue-light);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--accent-gold); text-shadow: 0 0 8px rgba(201,168,76,0.4); }
a:focus-visible {
  outline: 2px solid var(--accent-blue-light);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ===== 顶部双行导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0,0,0,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-brand {
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
}

.header-brand-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  height: 56px;
  flex-wrap: wrap;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.brand-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.12em;
  text-shadow: 0 0 12px rgba(255,255,255,0.15);
  transition: text-shadow var(--transition);
}
.brand-link:hover .brand-name {
  color: var(--text-primary);
  text-shadow: 0 0 16px rgba(58,111,216,0.5);
}

.brand-tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-contact {
  margin-left: auto;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--accent-blue-light);
  border: 1px solid var(--accent-blue);
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: background var(--transition), color var(--transition);
}
.header-contact:hover {
  background: var(--accent-blue);
  color: #fff;
  text-shadow: none;
}

/* 菜单行：nav > ol > li > a */
.site-nav {
  padding: 0 1.5rem;
  background: var(--panel);
}

.site-nav ol {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  gap: 0;
  counter-reset: nav-counter;
}

.site-nav ol li {
  counter-increment: nav-counter;
}

.site-nav ol li a {
  display: flex;
  align-items: center;
  height: 44px;
  padding: 0 0.85rem;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
  text-shadow: none;
}

.site-nav ol li a::before {
  content: counter(nav-counter, decimal-leading-zero);
  font-family: var(--font-display);
  font-size: 0.65rem;
  color: var(--accent-blue);
  margin-right: 0.35rem;
  opacity: 0.7;
}

.site-nav ol li a:hover {
  color: var(--text-primary);
  border-bottom-color: var(--accent-blue-light);
  text-shadow: none;
}

/* ===== 主内容区 ===== */
main {
  position: relative;
  z-index: 1;
}

.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== Hero 区（首页） ===== */
.hero-section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 6rem 0 4rem;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-media-empty {
  background: linear-gradient(135deg, rgba(58,111,216,0.06) 0%, rgba(0,0,0,0) 60%);
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  filter: brightness(0.6);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: right;
  max-width: 700px;
  margin-left: auto;
  padding: 2rem;
}

.hero-h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  text-shadow: 0 0 40px rgba(58,111,216,0.35), 0 2px 20px rgba(0,0,0,0.8);
  margin-bottom: 1.2rem;
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2rem;
  max-width: 500px;
  margin-left: auto;
}

.hero-cta {
  display: inline-block;
  padding: 0.85rem 2.2rem;
  background: var(--accent-blue);
  color: #fff;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  border-radius: var(--radius);
  text-shadow: none;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(58,111,216,0.3);
  min-height: 44px;
}
.hero-cta:hover {
  background: var(--accent-blue-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(58,111,216,0.5);
  text-shadow: none;
}

/* ===== 内容区段 ===== */
.content-section,
.cards-section {
  padding: 4rem 0;
}

.content-body,
.article-body,
.about-body,
.privacy-body,
.default-body {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: 0 4px 24px rgba(0,0,0,0.6);
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

/* ===== H2/H3 样式 + hr ===== */
h2 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

hr {
  border: none;
  border-top: 1px solid var(--border-light);
  margin: 0.8rem 0 1.5rem;
}

/* ===== 正文内容样式 ===== */
.page-content,
.article-content,
.about-content,
.privacy-content,
.default-content {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.85;
}

.page-content p,
.article-content p,
.about-content p,
.privacy-content p,
.default-content p {
  margin-bottom: 1.2em;
}

.page-content h2,
.article-content h2,
.about-content h2,
.privacy-content h2,
.default-content h2 {
  margin-top: 2em;
  margin-bottom: 0.5rem;
}

.page-content h3,
.article-content h3,
.about-content h3,
.privacy-content h3,
.default-content h3 {
  margin-top: 1.5em;
  margin-bottom: 0.4rem;
}

.page-content ul,
.article-content ul,
.about-content ul,
.privacy-content ul,
.default-content ul,
.page-content ol,
.article-content ol,
.about-content ol,
.privacy-content ol,
.default-content ol {
  padding-left: 1.5em;
  margin-bottom: 1.2em;
}

.page-content li,
.article-content li,
.about-content li,
.privacy-content li,
.default-content li {
  margin-bottom: 0.4em;
}

.page-content a,
.article-content a,
.about-content a,
.privacy-content a,
.default-content a {
  color: var(--accent-blue-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===== 卡片与侧边布局 ===== */
.cards-with-aside,
.article-section,
.about-section,
.privacy-section,
.default-section {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}

/* aside 在左侧 */
.article-aside,
.cards-aside {
  width: 220px;
  flex-shrink: 0;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.2rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  position: sticky;
  top: calc(var(--nav-h) + 1.5rem);
}

.aside-title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.aside-list {
  list-style: none;
  counter-reset: aside-counter;
  padding: 0;
  margin: 0;
}

.aside-list li {
  counter-increment: aside-counter;
  border-bottom: 1px solid var(--border);
}
.aside-list li:last-child { border-bottom: none; }

.aside-list li a {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.6rem 0;
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.4;
  min-height: 40px;
  transition: color var(--transition);
}
.aside-list li a::before {
  content: counter(aside-counter, decimal-leading-zero);
  font-family: var(--font-display);
  font-size: 0.65rem;
  color: var(--accent-blue);
  flex-shrink: 0;
  margin-top: 0.1rem;
}
.aside-list li a:hover {
  color: var(--text-primary);
  text-shadow: none;
}

.aside-back {
  margin-top: 1rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--border);
}
.aside-back-link {
  font-size: 0.82rem;
  color: var(--accent-blue-light);
  min-height: 40px;
  display: flex;
  align-items: center;
}

/* 右侧主体 */
.cards-table-wrap,
.article-body,
.about-body,
.privacy-body,
.default-body {
  flex: 1;
  min-width: 0;
}

/* ===== 导航表格（首页子页列表） ===== */
.nav-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.nav-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.nav-table tbody tr:last-child { border-bottom: none; }
.nav-table tbody tr:hover { background: var(--surface); }

.nav-table td {
  padding: 1rem 1.1rem;
  vertical-align: top;
}

.card-num {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-blue);
  letter-spacing: 0.06em;
  white-space: nowrap;
  width: 3rem;
  padding-top: 1.1rem;
}

.card-main { width: 100%; }

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  display: block;
  margin-bottom: 0.3rem;
  line-height: 1.4;
  transition: color var(--transition), text-shadow var(--transition);
}
.card-title:hover {
  color: var(--accent-gold);
  text-shadow: 0 0 10px rgba(201,168,76,0.3);
}

.card-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0;
}

.card-date {
  white-space: nowrap;
  font-size: 0.78rem;
  color: var(--text-muted);
  vertical-align: middle;
  width: 8rem;
  text-align: right;
}

.card-date time {
  font-family: var(--font-display);
  letter-spacing: 0.02em;
}

/* ===== 文章页 ===== */
.article-section {
  padding: 3rem 0 4rem;
}

.article-hero {
  margin: -2.5rem -2.5rem 2rem;
  border-radius: var(--radius) var(--radius) 0 0;
  overflow: hidden;
}

.article-hero-img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  opacity: 0.7;
  display: block;
}

.article-header {
  margin-bottom: 1.5rem;
}

.article-h1,
.about-h1,
.privacy-h1 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.3;
  color: var(--text-primary);
  text-shadow: 0 0 20px rgba(58,111,216,0.2);
  margin-bottom: 0.75rem;
}

.article-intro-title {
  margin-top: 1.5rem;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.5rem;
}

.article-meta-item {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}
.article-meta-item time {
  font-family: var(--font-display);
}

.article-lead,
.about-lead,
.privacy-lead {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  padding: 1rem 1.2rem;
  background: var(--surface);
  border-left: 3px solid var(--accent-blue);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-footer-nav,
.privacy-footer-nav,
.about-links {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ===== 按钮 ===== */
.btn-back,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  height: 42px;
  padding: 0 1.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.btn-back {
  background: var(--surface2);
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
}
.btn-back:hover {
  background: var(--surface);
  color: var(--text-primary);
  text-shadow: none;
  transform: translateX(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--accent-blue-light);
  border: 1px solid var(--accent-blue);
}
.btn-secondary:hover {
  background: var(--accent-blue);
  color: #fff;
  text-shadow: none;
}

/* ===== 关于页/隐私页 ===== */
.about-section,
.privacy-section {
  padding: 3rem 0 4rem;
}

.about-header,
.privacy-header {
  margin-bottom: 1.5rem;
}

/* ===== 内容区段（首页） ===== */
.content-section {
  padding: 2rem 0 3rem;
}

/* ===== 页脚 footer 极简 ===== */
.site-footer {
  position: relative;
  z-index: 1;
  background: var(--panel);
  border-top: 1px solid var(--border);
  padding: 3rem 2rem 2rem;
  text-align: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--text-primary);
  opacity: 0.08;
  line-height: 1;
  margin-bottom: 1rem;
  text-shadow: none;
}

.footer-copy {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
.footer-copy a {
  color: var(--text-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.footer-copy a:hover {
  color: var(--text-secondary);
  text-shadow: none;
}

/* ===== 动效 ===== */
@media (prefers-reduced-motion: no-preference) {
  .hero-h1 {
    animation: fadeInUp 0.8s ease both;
  }
  .hero-lead {
    animation: fadeInUp 0.8s 0.15s ease both;
  }
  .hero-cta {
    animation: fadeInUp 0.8s 0.3s ease both;
  }

  .nav-table tbody tr {
    animation: staggerIn 0.4s ease both;
  }
  .nav-table tbody tr:nth-child(1) { animation-delay: 0.05s; }
  .nav-table tbody tr:nth-child(2) { animation-delay: 0.1s; }
  .nav-table tbody tr:nth-child(3) { animation-delay: 0.15s; }
  .nav-table tbody tr:nth-child(4) { animation-delay: 0.2s; }
  .nav-table tbody tr:nth-child(5) { animation-delay: 0.25s; }
  .nav-table tbody tr:nth-child(6) { animation-delay: 0.3s; }

  .site-nav ol li a {
    transition: color 0.2s ease, border-color 0.2s ease;
  }

  .card-title {
    transition: color 0.2s ease, text-shadow 0.2s ease;
  }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes staggerIn {
  from { opacity: 0; transform: translateX(-10px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .cards-with-aside,
  .article-section,
  .about-section,
  .privacy-section,
  .default-section {
    flex-direction: column;
  }

  .article-aside,
  .cards-aside {
    width: 100%;
    position: static;
  }

  .hero-content {
    text-align: left;
    margin-left: 0;
    padding: 1.5rem 0;
  }

  .hero-lead {
    margin-left: 0;
  }
}

@media (max-width: 640px) {
  :root {
    --nav-h: 88px;
  }

  .header-brand-inner {
    height: auto;
    min-height: 52px;
    padding: 0.5rem 0;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .brand-tagline {
    display: none;
  }

  .brand-name {
    font-size: 1.2rem;
  }

  .header-contact {
    font-size: 0.75rem;
    padding: 0.3rem 0.7rem;
  }

  .site-nav {
    padding: 0 0.75rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .site-nav ol {
    flex-wrap: nowrap;
    gap: 0;
  }

  .site-nav ol li a {
    padding: 0 0.65rem;
    font-size: 0.76rem;
    white-space: nowrap;
  }

  .hero-section {
    min-height: 100svh;
    min-height: 100vh;
    padding: 4rem 0 3rem;
  }

  .hero-h1 {
    font-size: clamp(1.8rem, 8vw, 2.5rem);
  }

  .wrap {
    padding: 0 1rem;
  }

  .content-body,
  .article-body,
  .about-body,
  .privacy-body,
  .default-body {
    padding: 1.5rem 1.2rem;
  }

  .article-hero {
    margin: -1.5rem -1.2rem 1.5rem;
  }

  .article-hero-img {
    height: 200px;
  }

  .card-date {
    display: none;
  }

  .nav-table td {
    padding: 0.8rem 0.7rem;
  }

  .footer-brand {
    font-size: clamp(2rem, 12vw, 3.5rem);
  }

  .btn-back,
  .btn-secondary {
    height: 44px;
    width: 100%;
    justify-content: center;
  }

  h2 {
    font-size: 1.1rem;
  }
}

@media (max-width: 375px) {
  .site-nav ol li a::before {
    display: none;
  }
  .site-nav ol li a {
    padding: 0 0.5rem;
    font-size: 0.72rem;
  }
}

/* ===== 可访问性 ===== */
:focus-visible {
  outline: 2px solid var(--accent-blue-light);
  outline-offset: 3px;
}

::selection {
  background: rgba(58,111,216,0.35);
  color: #fff;
}

/* ===== 图片 ===== */
img {
  max-width: 100%;
  height: auto;
  display: block;
}