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

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

:root {
  --c-black: #000000;
  --c-white: #ffffff;
  --c-border: #000000;
  --c-muted: #555555;
  --c-light: #f5f5f5;
  --c-accent: #222222;
  --font-body: 'Cormorant Infant', 'Noto Serif SC', Georgia, serif;
  --font-script: 'Great Vibes', cursive;
  --font-sans: system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  --max-w: 1200px;
  --gap: 2rem;
  --radius: 4px;
  --transition: 220ms ease;
}

html {
  font-size: 17px;
  line-height: 1.65;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--c-white);
  color: var(--c-black);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--c-black);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity var(--transition);
}

a:hover {
  opacity: 0.6;
}

/* ── 公告条 ── */
.announce-bar {
  background: var(--c-black);
  color: var(--c-white);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-align: center;
  padding: 0.45rem 1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Header ── */
.site-header {
  border-bottom: 1.5px solid var(--c-border);
  background: var(--c-white);
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.5rem 0.4rem;
  border-bottom: 1px solid #e0e0e0;
}

.brand-logo {
  text-decoration: none;
}

.brand-script {
  font-family: var(--font-script);
  font-size: 2.6rem;
  line-height: 1.1;
  color: var(--c-black);
  letter-spacing: 0.02em;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  padding: 0 1rem;
}

.main-nav a {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--c-black);
  padding: 0.75rem 0.9rem;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition), opacity var(--transition);
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  border-bottom-color: var(--c-black);
  opacity: 1;
}

/* ── 粘性锚点条 ── */
.sticky-anchors {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  padding: 0 1rem;
  border-top: 1px solid #e0e0e0;
  background: var(--c-light);
}

.sticky-anchors a {
  font-family: var(--font-sans);
  font-size: 0.73rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  padding: 0.5rem 0.85rem;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  color: var(--c-muted);
  transition: color var(--transition);
  white-space: nowrap;
}

.sticky-anchors a:hover {
  color: var(--c-black);
}

/* ── 主容器 ── */
main {
  flex: 1;
}

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Hero (首页) ── */
.hero-section {
  padding: 0;
  min-height: 45vh;
  border-bottom: 1.5px solid var(--c-border);
  display: flex;
  align-items: stretch;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 45vh;
  width: 100%;
  gap: 0;
}

.hero-media {
  background: var(--c-light);
  overflow: hidden;
  border-right: 1.5px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.hero-placeholder {
  width: 100%;
  height: 100%;
  min-height: 45vh;
  background: repeating-linear-gradient(
    45deg,
    #e8e8e8 0px,
    #e8e8e8 1px,
    transparent 1px,
    transparent 12px
  );
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 3rem 2.5rem;
  gap: 1.2rem;
}

.hero-h1 {
  font-family: var(--font-body);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.hero-lead {
  font-size: 1rem;
  color: var(--c-muted);
  max-width: 28ch;
  line-height: 1.7;
}

.cta-btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--c-white);
  background: var(--c-black);
  border: 1.5px solid var(--c-black);
  padding: 0.75rem 2rem;
  min-height: 44px;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
  margin-top: 0.5rem;
}

.cta-btn:hover {
  background: var(--c-white);
  color: var(--c-black);
  opacity: 1;
}

/* ── 内容区 ── */
.content-section {
  padding: 3.5rem 0 2rem;
}

.entry-body,
.about-body,
.privacy-body {
  padding: 2.5rem 0 2rem;
}

/* ── Prose ── */
.prose {
  max-width: 72ch;
}

.prose h2 {
  font-size: 1.35rem;
  font-weight: 600;
  margin: 2rem 0 0.75rem;
  border-bottom: 1px solid #ddd;
  padding-bottom: 0.35rem;
}

.prose h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
}

.prose p {
  margin-bottom: 1rem;
}

.prose ul, .prose ol {
  margin: 0.75rem 0 1rem 1.5rem;
}

.prose li {
  margin-bottom: 0.4rem;
}

.prose a {
  color: var(--c-black);
  font-weight: 500;
}

.prose time {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--c-muted);
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.9rem;
}

.prose th, .prose td {
  border: 1px solid #ddd;
  padding: 0.5rem 0.75rem;
  text-align: left;
}

.prose th {
  background: var(--c-light);
  font-weight: 600;
}

.prose code {
  font-family: 'Courier New', monospace;
  background: var(--c-light);
  padding: 0.15em 0.35em;
  border-radius: 2px;
  font-size: 0.88em;
}

.prose pre {
  background: var(--c-light);
  border: 1px solid #ddd;
  padding: 1rem;
  overflow-x: auto;
  border-radius: var(--radius);
  margin: 1rem 0;
}

.prose blockquote {
  border-left: 3px solid var(--c-black);
  padding-left: 1rem;
  margin: 1rem 0;
  color: var(--c-muted);
  font-style: italic;
}

/* ── Section heading ── */
.section-heading {
  font-family: var(--font-body);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1.5px solid var(--c-border);
}

/* ── 卡片 ── */
.cat-section {
  padding: 3rem 0;
  border-top: 1.5px solid var(--c-border);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}

.card {
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.4rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: background var(--transition);
  background: var(--c-white);
}

.card:hover {
  background: var(--c-light);
}

.card-title {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--c-black);
  line-height: 1.3;
}

.card-title:hover {
  opacity: 0.7;
}

.card-desc {
  font-size: 0.88rem;
  color: var(--c-muted);
  line-height: 1.6;
}

.card-count {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--c-muted);
  letter-spacing: 0.04em;
  margin-top: auto;
  padding-top: 0.5rem;
  border-top: 1px solid #eee;
}

/* ── 子页列表 ── */
.child-section {
  padding: 2rem 0;
  border-top: 1.5px solid var(--c-border);
}

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

.child-list li,
.child-item {
  counter-increment: child-counter;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 0 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid #eee;
  position: relative;
}

.child-list li::before {
  content: counter(child-counter, decimal-leading-zero);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  color: var(--c-muted);
  letter-spacing: 0.04em;
  min-width: 2.2em;
}

.child-list li a,
.child-link {
  text-decoration: none;
  color: var(--c-black);
}

.child-link {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.child-title {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
}

.child-list li a:hover,
.child-link:hover .child-title {
  opacity: 0.6;
}

.child-list li small,
.child-desc {
  font-size: 0.82rem;
  color: var(--c-muted);
  line-height: 1.5;
}

.child-list li small {
  grid-column: 2;
}

.child-date {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--c-muted);
  white-space: nowrap;
}

/* ── index-list 变体（栏目页）── */
.index-section {
  padding: 2.5rem 0;
  border-top: 1.5px solid var(--c-border);
}

.index-list .child-item {
  grid-template-columns: auto 1fr auto;
}

/* ── 面包屑 ── */
.breadcrumb {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--c-muted);
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0 0.3rem;
}

.breadcrumb a {
  color: var(--c-muted);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--c-black);
}

/* ── 栏目 Hero ── */
.cat-hero {
  padding: 3rem 0 2rem;
  border-bottom: 1.5px solid var(--c-border);
}

.cat-h1 {
  font-family: var(--font-body);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.cat-lead {
  font-size: 1rem;
  color: var(--c-muted);
  max-width: 60ch;
  line-height: 1.7;
}

/* ── 文章 Hero ── */
.entry-header-section {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1.5px solid var(--c-border);
}

.entry-hero-wrap {
  margin-bottom: 1.5rem;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  max-height: 380px;
}

.entry-hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.entry-h1 {
  font-family: var(--font-body);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.entry-meta {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.entry-date {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--c-muted);
  letter-spacing: 0.03em;
}

/* ── 相关推荐 ── */
.related-section {
  padding: 2.5rem 0;
  border-top: 1.5px solid var(--c-border);
}

.related-heading {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.related-nav .child-list li {
  grid-template-columns: auto 1fr;
}

/* ── 关于页 ── */
.about-header-section {
  padding: 3rem 0 2rem;
  border-bottom: 1.5px solid var(--c-border);
}

.about-h1 {
  font-family: var(--font-body);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.about-lead {
  font-size: 1rem;
  color: var(--c-muted);
  max-width: 60ch;
}

.about-links-section {
  padding: 2.5rem 0;
  border-top: 1.5px solid var(--c-border);
}

.about-nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
}

.about-nav-card {
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  text-align: center;
  text-decoration: none;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-black);
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition);
}

.about-nav-card:hover {
  background: var(--c-black);
  color: var(--c-white);
  opacity: 1;
}

/* ── 隐私页 ── */
.privacy-header-section {
  padding: 3rem 0 2rem;
  border-bottom: 1.5px solid var(--c-border);
}

.privacy-h1 {
  font-family: var(--font-body);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.privacy-lead {
  font-size: 1rem;
  color: var(--c-muted);
  max-width: 60ch;
}

.privacy-links-section {
  padding: 2rem 0;
  border-top: 1.5px solid var(--c-border);
}

.privacy-note {
  font-size: 0.9rem;
  color: var(--c-muted);
}

/* ── 页脚 ── */
.site-footer {
  border-top: 1.5px solid var(--c-border);
  background: var(--c-white);
  margin-top: auto;
}

.footer-brand {
  text-align: center;
  padding: 2rem 1.5rem 0.5rem;
  border-bottom: 1px solid #eee;
}

.footer-brand .brand-script {
  font-size: 3.5rem;
  color: var(--c-black);
}

.footer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.5rem;
  max-width: var(--max-w);
  margin: 0 auto;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer-copy {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--c-muted);
  letter-spacing: 0.03em;
}

.footer-links {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.footer-links a {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--c-muted);
  text-decoration: none;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 0 0.2rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--c-black);
  opacity: 1;
}

/* ── Scroll Reveal ── */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 400ms ease, transform 400ms ease;
  }
  .reveal.visible {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ── 响应式 ── */
@media (max-width: 768px) {
  :root {
    --gap: 1.2rem;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-media {
    border-right: none;
    border-bottom: 1.5px solid var(--c-border);
    min-height: 220px;
  }

  .hero-placeholder {
    min-height: 220px;
  }

  .hero-copy {
    padding: 2rem 1.2rem;
  }

  .hero-h1 {
    font-size: 1.6rem;
  }

  .hero-section {
    min-height: auto;
  }

  .cat-h1,
  .about-h1,
  .privacy-h1 {
    font-size: 1.75rem;
  }

  .entry-h1 {
    font-size: 1.5rem;
  }

  .card-grid {
    grid-template-columns: 1fr 1fr;
  }

  .brand-script {
    font-size: 2rem;
  }

  .footer-brand .brand-script {
    font-size: 2.6rem;
  }

  .main-nav {
    justify-content: flex-start;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    padding: 0 0.5rem;
  }

  .main-nav a {
    padding: 0.75rem 0.7rem;
    font-size: 0.73rem;
  }

  .child-list li,
  .child-item {
    grid-template-columns: auto 1fr;
  }

  .child-date {
    display: none;
  }
}

@media (max-width: 480px) {
  .wrap {
    padding: 0 1rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .about-nav-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }

  .entry-h1 {
    font-size: 1.3rem;
  }

  .section-heading {
    font-size: 1.2rem;
  }
}