@import url('https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible:wght@400;700&family=Crimson+Pro:wght@400;500;600;700&display=swap');

/* ===== 自定义属性 ===== */
:root {
  --ink:    #1a0a00;
  --crim:   #8b1a1a;
  --parch:  #f5f0e8;
  --crim-l: #b02828;
  --crim-d: #5e1010;
  --parch-d: #e8e0cc;
  --ink-l:  #3a2010;
  --ink-ll: #6b4030;

  --font-serif: 'Crimson Pro', 'Georgia', 'Songti SC', serif;
  --font-sans:  'Atkinson Hyperlegible', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  --aside-w: 220px;
  --content-max: 780px;
  --gap: 2rem;
  --radius: 0;

  --transition-base: 0.35s cubic-bezier(0.4,0,0.2,1);
  --shadow-card: 0 4px 24px rgba(26,10,0,0.18), 0 1px 4px rgba(26,10,0,0.10);
}

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

html {
  font-size: 18px;
  scroll-behavior: smooth;
  background: var(--ink);
  color: var(--parch);
}

body {
  font-family: var(--font-sans);
  line-height: 1.7;
  background: var(--ink);
  color: var(--parch);
  min-height: 100vh;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--crim-l); text-decoration: none; transition: color var(--transition-base); }
a:hover { color: var(--parch); }
ul, ol { list-style: none; }

/* ===== 公告条 ===== */
.site-announce {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  background: var(--crim-d);
  color: var(--parch);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-align: center;
  padding: 0.35rem 1rem;
  border-bottom: 1px solid var(--crim);
}

/* ===== 侧边导航 aside > nav > ul > li > a ===== */
.site-aside {
  position: fixed;
  top: 0; left: 0;
  width: var(--aside-w);
  height: 100vh;
  background: var(--ink);
  border-right: 1px solid var(--crim-d);
  z-index: 100;
  display: flex;
  flex-direction: column;
  padding-top: 2.2rem; /* 公告条高度 */
  overflow-y: auto;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 1.2rem 1.2rem 0.8rem;
  border-bottom: 1px solid var(--crim-d);
  min-height: 56px;
}

.brand-icon-text {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--crim);
  color: var(--parch);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}

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

.brand-name {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--parch);
  line-height: 1.3;
}
.brand-name:hover { color: var(--crim-l); }

.main-nav {
  flex: 1;
  padding: 0.8rem 0;
}

.main-nav ul {
  display: flex;
  flex-direction: column;
}

.main-nav li a {
  display: block;
  padding: 0.65rem 1.2rem;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--parch-d);
  border-left: 2px solid transparent;
  transition: all var(--transition-base);
  line-height: 1.4;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.main-nav li a:hover,
.main-nav li a[aria-current="page"] {
  color: var(--parch);
  background: rgba(139,26,26,0.15);
  border-left-color: var(--crim);
}

/* ===== 页面主体包裹 ===== */
.page-wrap {
  margin-left: var(--aside-w);
  min-height: 100vh;
}

/* ===== Hero（首页） ===== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--ink);
  overflow: hidden;
  margin-top: 2.2rem; /* 公告条 */
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 60%, rgba(139,26,26,0.18) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--gap);
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 3rem;
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.hero-eyebrow {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--crim-l);
  text-transform: uppercase;
  display: block;
}

.hero-text h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--parch);
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--parch-d);
  line-height: 1.7;
  max-width: 480px;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.hero-media {
  position: relative;
  width: 100%;
  aspect-ratio: 3/4;
  max-height: 70vh;
  overflow: hidden;
}

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

.hero-placeholder {
  background: linear-gradient(135deg, var(--ink-l) 0%, var(--crim-d) 100%);
}

.hero-placeholder-inner {
  width: 100%;
  height: 100%;
  background:
    repeating-linear-gradient(
      45deg,
      rgba(245,240,232,0.03) 0px,
      rgba(245,240,232,0.03) 1px,
      transparent 1px,
      transparent 24px
    );
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-block;
  background: var(--crim);
  color: var(--parch);
  padding: 0.7rem 1.6rem;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  border: 2px solid var(--crim);
  transition: all var(--transition-base);
  min-height: 44px;
  line-height: 1.4;
}
.btn-primary:hover {
  background: var(--crim-l);
  color: var(--parch);
  border-color: var(--crim-l);
}

.btn-ghost {
  display: inline-block;
  background: transparent;
  color: var(--parch);
  padding: 0.7rem 1.6rem;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  border: 2px solid var(--parch-d);
  transition: all var(--transition-base);
  min-height: 44px;
  line-height: 1.4;
}
.btn-ghost:hover {
  background: var(--parch-d);
  color: var(--ink);
}

/* ===== main > section ===== */
.main-content {
  background: var(--parch);
  color: var(--ink);
  min-height: 60vh;
}

/* ===== 首页正文 section ===== */
.content-section {
  display: grid;
  grid-template-columns: var(--aside-w) 1fr var(--content-max);
  gap: var(--gap);
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 2rem;
  align-items: start;
}

.section-aside {
  position: sticky;
  top: 4rem;
  padding: 1.2rem;
  background: var(--ink);
  color: var(--parch);
}

.section-figure {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  min-width: 80px;
}

.figure-deco {
  width: 4px;
  background: linear-gradient(to bottom, var(--crim), transparent);
  min-height: 160px;
  align-self: stretch;
}

.prose-body {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.85;
  color: var(--ink);
  max-width: var(--content-max);
}

.prose-body h2, .prose-body h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--crim-d);
  margin: 2rem 0 0.5rem;
}

.prose-body h2 { font-size: 1.5rem; }
.prose-body h3 { font-size: 1.2rem; }

.prose-body p { margin-bottom: 1.2rem; }
.prose-body ul, .prose-body ol { margin: 1rem 0 1.2rem 1.5rem; list-style: disc; }
.prose-body li { margin-bottom: 0.4rem; }
.prose-body a { color: var(--crim); text-decoration: underline; }
.prose-body a:hover { color: var(--crim-d); }

/* ===== 侧边 aside 通用 ===== */
.aside-label {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--crim-l);
  text-transform: uppercase;
  margin-bottom: 0.8rem;
  font-weight: 700;
}

.aside-quicklinks {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.aside-quicklinks li a {
  display: block;
  font-size: 0.82rem;
  color: var(--parch-d);
  padding: 0.35rem 0;
  border-bottom: 1px solid rgba(245,240,232,0.1);
  transition: color var(--transition-base);
  min-height: 40px;
  display: flex;
  align-items: center;
  line-height: 1.3;
}

.aside-quicklinks li a:hover { color: var(--parch); }

/* 在亮色背景 aside ===== */
.about-aside .aside-quicklinks li a,
.privacy-aside .aside-quicklinks li a,
.default-aside .aside-quicklinks li a {
  color: var(--ink-ll);
  border-bottom-color: rgba(26,10,0,0.1);
}
.about-aside .aside-quicklinks li a:hover,
.privacy-aside .aside-quicklinks li a:hover,
.default-aside .aside-quicklinks li a:hover {
  color: var(--crim);
}

/* ===== dl > dt > a + dd ===== */
.child-nav-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 2rem 3rem;
}

.child-nav-section h2 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--ink);
  margin-bottom: 0.4rem;
}

.child-nav-section hr {
  border: none;
  border-top: 2px solid var(--crim);
  margin-bottom: 1.5rem;
}

.child-dl {
  display: grid;
  gap: 1rem;
}

.child-dl dt {
  margin-bottom: 0.2rem;
}

.child-dl dt a {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--crim-d);
  transition: color var(--transition-base);
}

.child-dl dt a:hover { color: var(--crim-l); }

.child-dl dd {
  font-size: 0.9rem;
  color: var(--ink-ll);
  line-height: 1.6;
  padding-left: 0.5rem;
  border-left: 2px solid var(--crim-d);
}

/* ===== 卡片区 ===== */
.cards-section {
  background: var(--ink);
  padding: 3rem 2rem;
  max-width: 100%;
}

.cards-section h2 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--parch);
  max-width: 1200px;
  margin: 0 auto 0.4rem;
}

.cards-section hr {
  border: none;
  border-top: 2px solid var(--crim);
  max-width: 1200px;
  margin: 0 auto 2rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.card {
  background: var(--ink-l);
  border: 1px solid var(--crim-d);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(26,10,0,0.3);
}

.card-body {
  padding: 1.4rem;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 0.5rem;
}

.card-title a {
  color: var(--parch);
}
.card-title a:hover { color: var(--crim-l); }

.card-date {
  font-size: 0.78rem;
  color: var(--crim-l);
  margin-bottom: 0.6rem;
  font-family: var(--font-sans);
}

.card-desc {
  font-size: 0.88rem;
  color: var(--parch-d);
  line-height: 1.6;
  margin-bottom: 0.8rem;
}

.card-link {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--crim-l);
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--crim-d);
  padding-bottom: 1px;
}
.card-link:hover { color: var(--parch); border-bottom-color: var(--parch); }

/* ===== 文章 hero ===== */
.article-hero {
  position: relative;
  height: 40vh;
  min-height: 240px;
  overflow: hidden;
  margin-top: 2.2rem;
  background: var(--ink);
}

.article-hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  opacity: 0.6;
}

/* ===== 文章头部 section ===== */
.article-header-section {
  display: grid;
  grid-template-columns: var(--aside-w) auto 1fr;
  gap: var(--gap);
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 2rem 1.5rem;
  align-items: start;
  background: var(--parch);
}

.article-aside-meta {
  background: var(--ink);
  color: var(--parch);
  padding: 1.2rem;
  position: sticky;
  top: 4rem;
}

.breadcrumb {
  font-size: 0.8rem;
  color: var(--crim-l);
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--parch-d); }
.breadcrumb a:hover { color: var(--parch); }
.breadcrumb span { color: var(--crim-l); }

.meta-dates {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin-bottom: 1rem;
}

.article-date, .article-mod {
  font-size: 0.78rem;
  color: var(--crim-l);
  font-family: var(--font-sans);
}

.sib-nav {
  margin-bottom: 1rem;
  border-top: 1px solid var(--crim-d);
  padding-top: 0.8rem;
}

.sib-nav-title {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--crim-l);
  margin-bottom: 0.5rem;
  font-weight: 700;
  font-family: var(--font-sans);
}

.sib-nav ul { display: flex; flex-direction: column; gap: 0.2rem; }
.sib-nav li a {
  font-size: 0.8rem;
  color: var(--parch-d);
  display: block;
  padding: 0.2rem 0;
  min-height: 40px;
  display: flex;
  align-items: center;
  line-height: 1.3;
}
.sib-nav li a:hover, .sib-nav li a.active { color: var(--crim-l); }

.aside-nav-label {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--crim-l);
  margin-bottom: 0.5rem;
  font-weight: 700;
  font-family: var(--font-sans);
  border-top: 1px solid var(--crim-d);
  padding-top: 0.8rem;
}

.article-hero-figure {
  display: flex;
  align-items: stretch;
  min-width: 4px;
}

.article-title-block {
  max-width: var(--content-max);
}

.article-title-block h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.25;
  margin-bottom: 0.8rem;
}

.article-lead {
  font-size: 1rem;
  color: var(--ink-ll);
  line-height: 1.7;
}

/* ===== 文章正文区 ===== */
.article-body-section {
  display: grid;
  grid-template-columns: var(--aside-w) 1fr;
  gap: var(--gap);
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 2rem 3rem;
  background: var(--parch);
}

.article-toc-aside {
  background: var(--ink);
  color: var(--parch);
  padding: 1.2rem;
  position: sticky;
  top: 4rem;
  align-self: start;
}

.toc-label {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--crim-l);
  margin-bottom: 0.6rem;
  font-weight: 700;
  font-family: var(--font-sans);
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.toc-list li a {
  display: flex;
  align-items: center;
  font-size: 0.82rem;
  color: var(--parch-d);
  padding: 0.3rem 0;
  border-bottom: 1px solid rgba(245,240,232,0.08);
  min-height: 40px;
  line-height: 1.3;
  transition: color var(--transition-base);
}
.toc-list li a:hover { color: var(--parch); }

.article-prose {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.85;
  color: var(--ink);
  max-width: var(--content-max);
}

.article-prose h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--crim-d);
  margin: 2rem 0 0.4rem;
}

.article-prose h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--ink);
  margin: 1.5rem 0 0.4rem;
}

.article-prose h2 + hr,
.article-prose h3 + hr {
  border: none;
  border-top: 1px solid var(--crim-d);
  margin-bottom: 1rem;
}

.article-prose hr {
  border: none;
  border-top: 1px solid var(--parch-d);
  margin: 1.5rem 0;
}

.article-prose p { margin-bottom: 1.2rem; }
.article-prose ul, .article-prose ol { margin: 1rem 0 1.2rem 1.5rem; list-style: disc; }
.article-prose li { margin-bottom: 0.4rem; }
.article-prose a { color: var(--crim); text-decoration: underline; }
.article-prose a:hover { color: var(--crim-d); }

.article-prose blockquote {
  border-left: 3px solid var(--crim);
  padding: 0.8rem 1.2rem;
  background: var(--parch-d);
  margin: 1.5rem 0;
  font-style: italic;
}

.article-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.article-prose th, .article-prose td {
  border: 1px solid var(--parch-d);
  padding: 0.5rem 0.8rem;
  text-align: left;
}

.article-prose th {
  background: var(--ink);
  color: var(--parch);
  font-family: var(--font-sans);
  font-size: 0.85rem;
}

/* ===== 相关文章 ===== */
.related-section {
  background: var(--ink);
  padding: 3rem 2rem;
}

.related-section h2 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--parch);
  max-width: 1200px;
  margin: 0 auto 0.4rem;
}

.related-section hr {
  border: none;
  border-top: 2px solid var(--crim);
  max-width: 1200px;
  margin: 0 auto 2rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.related-card {
  background: var(--ink-l);
  border: 1px solid var(--crim-d);
  padding: 1.2rem;
  transition: transform var(--transition-base);
}

.related-card:hover { transform: translateY(-2px); }

.related-title {
  display: block;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--parch);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.related-title:hover { color: var(--crim-l); }

.related-desc {
  font-size: 0.85rem;
  color: var(--parch-d);
  line-height: 1.5;
}

/* ===== About 页 ===== */
.about-main { background: var(--parch); color: var(--ink); }

.about-header-section {
  display: grid;
  grid-template-columns: var(--aside-w) auto 1fr;
  gap: var(--gap);
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem 2rem;
  margin-top: 2.2rem;
  align-items: start;
}

.about-aside {
  background: var(--ink);
  color: var(--parch);
  padding: 1.2rem;
  position: sticky;
  top: 4rem;
}

.about-figure { display: flex; align-items: stretch; min-width: 4px; }

.about-title-block { max-width: var(--content-max); }

.eyebrow-label {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--crim-l);
  text-transform: uppercase;
  margin-bottom: 0.6rem;
  font-weight: 700;
}

.about-title-block h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.8rem;
  line-height: 1.25;
}

.about-lead {
  font-size: 1rem;
  color: var(--ink-ll);
  line-height: 1.7;
}

.about-body-section {
  display: grid;
  grid-template-columns: var(--aside-w) 1fr;
  gap: var(--gap);
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 2rem 4rem;
  background: var(--parch);
}

.about-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  position: sticky;
  top: 4rem;
  align-self: start;
}

.sidebar-card {
  background: var(--ink);
  color: var(--parch);
  padding: 1.2rem;
}

.sidebar-card-title {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--crim-l);
  margin-bottom: 0.8rem;
  font-weight: 700;
  font-family: var(--font-sans);
  text-transform: uppercase;
}

.sidebar-card p {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--parch-d);
}

.about-prose {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.85;
  color: var(--ink);
  max-width: var(--content-max);
}

.about-prose h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--crim-d);
  margin: 2rem 0 0.4rem;
}

.about-prose h3 { font-size: 1.2rem; font-weight: 600; margin: 1.5rem 0 0.4rem; }
.about-prose h2 + hr, .about-prose h3 + hr {
  border: none;
  border-top: 1px solid var(--crim-d);
  margin-bottom: 1rem;
}
.about-prose hr { border: none; border-top: 1px solid var(--parch-d); margin: 1.5rem 0; }
.about-prose p { margin-bottom: 1.2rem; }
.about-prose ul, .about-prose ol { margin: 1rem 0 1.2rem 1.5rem; list-style: disc; }
.about-prose li { margin-bottom: 0.4rem; }
.about-prose a { color: var(--crim); text-decoration: underline; }

/* ===== Privacy 页 ===== */
.privacy-main { background: var(--parch); color: var(--ink); }

.privacy-header-section {
  display: grid;
  grid-template-columns: var(--aside-w) auto 1fr;
  gap: var(--gap);
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem 2rem;
  margin-top: 2.2rem;
  align-items: start;
}

.privacy-aside {
  background: var(--ink);
  color: var(--parch);
  padding: 1.2rem;
  position: sticky;
  top: 4rem;
}

.privacy-figure { display: flex; align-items: stretch; min-width: 4px; }

.privacy-title-block { max-width: var(--content-max); }

.privacy-title-block h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.8rem;
  line-height: 1.25;
}

.privacy-date {
  font-size: 0.82rem;
  color: var(--crim-l);
  margin-bottom: 0.6rem;
  font-family: var(--font-sans);
}

.privacy-lead { font-size: 1rem; color: var(--ink-ll); line-height: 1.7; }

.privacy-body-section {
  display: grid;
  grid-template-columns: var(--aside-w) 1fr;
  gap: var(--gap);
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 2rem 4rem;
  background: var(--parch);
}

.privacy-sidebar {
  position: sticky;
  top: 4rem;
  align-self: start;
}

.privacy-prose {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.85;
  color: var(--ink);
  max-width: var(--content-max);
}

.privacy-prose h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--crim-d);
  margin: 2rem 0 0.4rem;
}
.privacy-prose h3 { font-size: 1.2rem; font-weight: 600; margin: 1.5rem 0 0.4rem; }
.privacy-prose h2 + hr, .privacy-prose h3 + hr {
  border: none;
  border-top: 1px solid var(--crim-d);
  margin-bottom: 1rem;
}
.privacy-prose hr { border: none; border-top: 1px solid var(--parch-d); margin: 1.5rem 0; }
.privacy-prose p { margin-bottom: 1.2rem; }
.privacy-prose ul { margin: 1rem 0 1.2rem 1.5rem; list-style: disc; }
.privacy-prose li { margin-bottom: 0.4rem; }
.privacy-prose a { color: var(--crim); text-decoration: underline; }

/* ===== Default 页 ===== */
.default-main { background: var(--parch); color: var(--ink); }

.default-header-section {
  display: grid;
  grid-template-columns: var(--aside-w) auto 1fr;
  gap: var(--gap);
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem 2rem;
  margin-top: 2.2rem;
  align-items: start;
}

.default-aside {
  background: var(--ink);
  color: var(--parch);
  padding: 1.2rem;
  position: sticky;
  top: 4rem;
}

.default-figure { display: flex; align-items: stretch; min-width: 4px; }

.default-title-block h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.8rem;
  line-height: 1.25;
}

.default-lead { font-size: 1rem; color: var(--ink-ll); line-height: 1.7; }

.default-body-section {
  display: grid;
  grid-template-columns: var(--aside-w) 1fr;
  gap: var(--gap);
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 2rem 4rem;
}

.default-sidebar {
  position: sticky;
  top: 4rem;
  align-self: start;
}

.default-prose {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.85;
  color: var(--ink);
  max-width: var(--content-max);
}

.default-prose h2 { font-size: 1.5rem; font-weight: 700; color: var(--crim-d); margin: 2rem 0 0.4rem; }
.default-prose h3 { font-size: 1.2rem; font-weight: 600; margin: 1.5rem 0 0.4rem; }
.default-prose h2 + hr { border: none; border-top: 1px solid var(--crim-d); margin-bottom: 1rem; }
.default-prose hr { border: none; border-top: 1px solid var(--parch-d); margin: 1.5rem 0; }
.default-prose p { margin-bottom: 1.2rem; }
.default-prose ul { margin: 1rem 0 1.2rem 1.5rem; list-style: disc; }
.default-prose li { margin-bottom: 0.4rem; }
.default-prose a { color: var(--crim); text-decoration: underline; }

/* ===== 页脚 footer > section×n ===== */
.site-footer {
  background: var(--ink);
  color: var(--parch);
  border-top: 2px solid var(--crim-d);
}

.footer-cta {
  background: linear-gradient(135deg, var(--crim-d) 0%, var(--ink) 100%);
  padding: 3rem 2rem;
  text-align: center;
  border-bottom: 1px solid var(--crim-d);
}

.footer-cta-inner {
  max-width: 600px;
  margin: 0 auto;
}

.footer-cta h2 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--parch);
  margin-bottom: 0.6rem;
}

.footer-cta p {
  font-size: 0.95rem;
  color: var(--parch-d);
  margin-bottom: 1.2rem;
  line-height: 1.6;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--parch);
  margin-bottom: 0.6rem;
}

.footer-desc {
  font-size: 0.85rem;
  color: var(--parch-d);
  line-height: 1.6;
}

.footer-col-title {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--crim-l);
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 0.8rem;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.footer-col ul li a {
  display: block;
  font-size: 0.85rem;
  color: var(--parch-d);
  padding: 0.25rem 0;
  transition: color var(--transition-base);
  min-height: 40px;
  display: flex;
  align-items: center;
}
.footer-col ul li a:hover { color: var(--parch); }

.footer-bottom {
  border-top: 1px solid var(--crim-d);
  padding: 1.2rem 2rem;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--ink-ll);
}

/* ===== 装饰线 ===== */
.figure-deco {
  width: 4px;
  min-height: 120px;
  background: linear-gradient(to bottom, var(--crim), transparent);
}

.figure-deco--home { background: linear-gradient(to bottom, var(--crim), rgba(139,26,26,0)); }
.figure-deco--article { background: linear-gradient(to bottom, var(--crim-d), transparent); }
.figure-deco--about { background: linear-gradient(to bottom, var(--crim-l), transparent); }
.figure-deco--privacy { background: linear-gradient(to bottom, var(--ink-ll), transparent); }
.figure-deco--default { background: linear-gradient(to bottom, var(--crim-d), transparent); }

/* ===== hr 通用 ===== */
hr {
  border: none;
  border-top: 1px solid var(--parch-d);
  margin: 1.2rem 0;
}

/* ===== Reveal 动画 ===== */
.reveal-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-card {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-section {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Parallax Hero ===== */
.parallax-hero {
  will-change: transform;
}

/* ===== prefers-reduced-motion ===== */
@media (prefers-reduced-motion: reduce) {
  .reveal-up, .reveal-card, .reveal-section {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .parallax-hero { will-change: auto; }
  html { scroll-behavior: auto; }
  .card, .related-card { transition: none; }
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .content-section,
  .article-header-section,
  .about-header-section,
  .privacy-header-section,
  .default-header-section {
    grid-template-columns: 180px auto 1fr;
  }

  .article-body-section,
  .about-body-section,
  .privacy-body-section,
  .default-body-section {
    grid-template-columns: 180px 1fr;
  }

  :root { --aside-w: 180px; }
  .site-aside { width: 180px; }
  .page-wrap { margin-left: 180px; }
}

@media (max-width: 768px) {
  :root { --aside-w: 0px; }

  .site-aside {
    position: fixed;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: auto;
    flex-direction: row;
    align-items: center;
    border-right: none;
    border-top: 1px solid var(--crim-d);
    padding-top: 0;
    z-index: 150;
    overflow-y: visible;
    overflow-x: auto;
  }

  .brand-row {
    padding: 0.6rem 1rem;
    border-bottom: none;
    border-right: 1px solid var(--crim-d);
    flex-shrink: 0;
    min-height: 48px;
  }

  .brand-name { font-size: 0.82rem; max-width: 100px; }

  .main-nav {
    flex: 1;
    padding: 0;
    overflow-x: auto;
  }

  .main-nav ul {
    flex-direction: row;
    white-space: nowrap;
  }

  .main-nav li a {
    padding: 0.5rem 0.8rem;
    border-left: none;
    border-bottom: 2px solid transparent;
    font-size: 0.75rem;
    min-height: 48px;
  }

  .main-nav li a:hover,
  .main-nav li a[aria-current="page"] {
    border-left-color: transparent;
    border-bottom-color: var(--crim);
    background: rgba(139,26,26,0.1);
  }

  .page-wrap {
    margin-left: 0;
    padding-bottom: 60px; /* bottom nav 高度 */
  }

  .hero-content {
    grid-template-columns: 1fr;
    padding: 3rem 1.2rem 2rem;
    gap: 2rem;
  }

  .hero-section {
    min-height: auto;
    padding-top: 2.2rem;
  }

  .hero-media {
    aspect-ratio: 4/3;
    max-height: 50vw;
  }

  .content-section,
  .article-header-section,
  .about-header-section,
  .privacy-header-section,
  .default-header-section {
    grid-template-columns: 1fr;
    padding: 1.5rem 1.2rem;
    margin-top: 2.2rem;
  }

  .section-aside,
  .article-aside-meta,
  .about-aside,
  .privacy-aside,
  .default-aside {
    position: static;
    width: 100%;
  }

  .section-figure,
  .article-hero-figure,
  .about-figure,
  .privacy-figure,
  .default-figure {
    display: none;
  }

  .article-body-section,
  .about-body-section,
  .privacy-body-section,
  .default-body-section {
    grid-template-columns: 1fr;
    padding: 1.2rem 1.2rem 3rem;
  }

  .article-toc-aside,
  .about-sidebar,
  .privacy-sidebar,
  .default-sidebar {
    position: static;
    width: 100%;
  }

  .footer-cols {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 2rem 1.2rem;
  }

  .cards-section { padding: 2rem 1.2rem; }
  .related-section { padding: 2rem 1.2rem; }
  .footer-cta { padding: 2rem 1.2rem; }

  .cards-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }

  .hero-ctas { flex-direction: column; }
  .btn-primary, .btn-ghost { width: 100%; text-align: center; }

  .child-nav-section { padding: 1.5rem 1.2rem; }

  .article-hero { height: 30vh; min-height: 180px; margin-top: 2.2rem; }
}

@media (max-width: 480px) {
  html { font-size: 16px; }

  .hero-text h1 { font-size: 1.5rem; }
  .site-announce { font-size: 0.72rem; }

  .prose-body, .article-prose, .about-prose, .privacy-prose, .default-prose {
    font-size: 1rem;
  }
}