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

/* =============================================
   CSS 自定义属性
   ============================================= */
:root {
  --c-bg: #fafaf8;
  --c-mid: #4a4a4a;
  --c-dark: #1a1a1a;
  --c-border: #c8c8c4;
  --c-border-dark: #8a8a84;
  --c-accent: #2a2a2a;
  --c-card-bg: #f4f4f0;
  --c-hover: #e8e8e2;
  --font-main: 'Noto Sans Thai', 'Noto Sans', system-ui, sans-serif;
  --nav-h: 56px;
  --radius: 4px;
  --shadow-card: 3px 4px 0 rgba(26,26,26,0.12);
  --shadow-hover: 5px 6px 0 rgba(26,26,26,0.18);
  --max-content: 760px;
  --max-wide: 1100px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--c-bg);
  color: var(--c-dark);
  font-family: var(--font-main);
  font-weight: 400;
  line-height: 1.7;
  padding-bottom: var(--nav-h);
  /* 纸张肌理感：细微噪点背景 */
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(26,26,26,0.012) 2px,
      rgba(26,26,26,0.012) 3px
    );
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; }

/* =============================================
   侧边导航（底部固定条，桌面也用）
   ============================================= */
.site-nav-aside {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--c-dark);
  border-top: 2px solid var(--c-border-dark);
  /* 手绘感：略微倾斜的顶部边线 */
  box-shadow: 0 -2px 0 rgba(74,74,74,0.3), 0 -4px 12px rgba(0,0,0,0.15);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 0 12px;
  height: var(--nav-h);
  gap: 8px;
}

.nav-brand-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.nav-logo {
  width: 28px;
  height: 28px;
  border-radius: 2px;
}

.nav-brand {
  color: var(--c-bg);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.nav-brand:hover { text-decoration: none; opacity: 0.85; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.nav-list::-webkit-scrollbar { display: none; }

.nav-list li a {
  display: block;
  color: rgba(250,250,248,0.75);
  font-size: 0.75rem;
  font-weight: 400;
  padding: 10px 8px;
  min-height: 40px;
  display: flex;
  align-items: center;
  white-space: nowrap;
  border-radius: var(--radius);
  transition: color 0.15s, background 0.15s;
}

.nav-list li a:hover {
  color: var(--c-bg);
  background: rgba(255,255,255,0.08);
  text-decoration: none;
}

/* =============================================
   页面整体包裹
   ============================================= */
.page-wrap {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* =============================================
   面包屑
   ============================================= */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--c-mid);
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--c-mid);
  border-bottom: 1px solid var(--c-border);
}

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

/* =============================================
   通用标题装饰
   ============================================= */
.sec-heading {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: none;
  color: var(--c-dark);
  margin-bottom: 6px;
}

/* h2/h3 后紧跟 hr 的样式 */
.sec-heading + hr,
h2 + hr,
h3 + hr {
  border: none;
  border-top: 2px solid var(--c-dark);
  margin: 0 0 20px 0;
  /* 手绘感：不规则虚线 */
  background: repeating-linear-gradient(
    90deg,
    var(--c-dark) 0px,
    var(--c-dark) 8px,
    transparent 8px,
    transparent 12px
  );
  height: 2px;
  border-top: none;
}

hr {
  border: none;
  height: 2px;
  background: var(--c-dark);
  margin: 8px 0 20px;
}

/* =============================================
   手绘装饰线
   ============================================= */
.section-deco,
.recent-deco {
  display: block;
  margin: -8px 0 16px;
  border: none;
}

.scratch-line {
  display: block;
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    var(--c-border-dark) 0,
    var(--c-border-dark) 3px,
    transparent 3px,
    transparent 7px
  );
  opacity: 0.5;
  transform: rotate(-0.3deg);
}

/* =============================================
   侧边栏（aside）通用
   ============================================= */
.aside-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--c-mid);
  text-transform: none;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--c-border);
  padding-bottom: 4px;
}

.aside-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.aside-links li a {
  display: block;
  font-size: 0.82rem;
  color: var(--c-mid);
  padding: 6px 8px;
  border-left: 2px solid var(--c-border);
  min-height: 32px;
  display: flex;
  align-items: center;
  transition: border-color 0.12s, color 0.12s, background 0.12s;
}

.aside-links li a:hover {
  color: var(--c-dark);
  border-left-color: var(--c-dark);
  background: var(--c-hover);
  text-decoration: none;
}

/* =============================================
   页脚
   ============================================= */
.site-footer {
  margin-top: auto;
  background: var(--c-dark);
  color: rgba(250,250,248,0.6);
  border-top: 2px solid var(--c-border-dark);
}

.footer-inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-brand { flex-shrink: 0; }

.footer-logo-link {
  color: var(--c-bg);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

.footer-logo-link:hover { opacity: 0.8; text-decoration: none; }

.footer-nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  flex: 1;
}

.footer-nav a {
  color: rgba(250,250,248,0.65);
  font-size: 0.78rem;
  min-height: 40px;
  display: flex;
  align-items: center;
  padding: 0 4px;
  transition: color 0.12s;
}

.footer-nav a:hover { color: var(--c-bg); text-decoration: none; }

.footer-copy {
  font-size: 0.72rem;
  color: rgba(250,250,248,0.4);
  margin-left: auto;
  white-space: nowrap;
}

/* =============================================
   首页：Hero
   ============================================= */
.home-main { flex: 1; }

.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 60px 24px 80px;
  overflow: hidden;
  background: var(--c-dark);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: right;
  max-width: var(--max-wide);
  margin: 0 auto 0 auto;
  width: 100%;
}

.hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  color: rgba(250,250,248,0.5);
  margin-bottom: 12px;
  text-transform: none;
}

.hero-h1 {
  font-size: clamp(1.8rem, 6vw, 3.6rem);
  font-weight: 700;
  color: var(--c-bg);
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.hero-sub {
  font-size: 0.95rem;
  color: rgba(250,250,248,0.65);
  max-width: 500px;
  margin-left: auto;
  margin-bottom: 28px;
  line-height: 1.6;
}

.hero-cta {
  display: inline-block;
  padding: 12px 24px;
  background: var(--c-bg);
  color: var(--c-dark);
  font-weight: 700;
  font-size: 0.88rem;
  border: 2px solid var(--c-bg);
  border-radius: var(--radius);
  transform: rotate(-0.5deg);
  transition: transform 0.1s, box-shadow 0.1s;
  box-shadow: 3px 3px 0 rgba(250,250,248,0.3);
}

.hero-cta:hover {
  transform: rotate(0.3deg) translateY(-1px);
  box-shadow: 5px 5px 0 rgba(250,250,248,0.4);
  text-decoration: none;
}

.hero-bg-num {
  position: absolute;
  bottom: 60px;
  left: 16px;
  font-size: clamp(8rem, 28vw, 18rem);
  font-weight: 700;
  color: rgba(250,250,248,0.04);
  line-height: 1;
  pointer-events: none;
  user-select: none;
  letter-spacing: -0.05em;
  z-index: 1;
}

.hero-fig {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-fig img,
.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
  filter: grayscale(60%) contrast(1.1);
}

.hero-fig--empty {
  background: repeating-linear-gradient(
    135deg,
    transparent,
    transparent 20px,
    rgba(250,250,248,0.015) 20px,
    rgba(250,250,248,0.015) 21px
  );
}

/* =============================================
   首页：频道卡片
   ============================================= */
.channels-section {
  padding: 48px 24px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
}

.channels-note {
  font-size: 0.85rem;
  color: var(--c-mid);
  margin-bottom: 24px;
  padding: 12px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-card-bg);
  transform: rotate(-0.2deg);
}

.channel-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.channel-card {
  background: var(--c-card-bg);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transform: rotate(calc(var(--i, 0) * 0.3deg - 0.3deg));
  transition: box-shadow 0.1s, transform 0.1s;
}

.channel-card:hover {
  box-shadow: var(--shadow-hover);
  transform: rotate(0deg) translateY(-2px);
}

.channel-card a {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.channel-card a:hover { text-decoration: none; }

.card-figure {
  overflow: hidden;
  aspect-ratio: 16/9;
  border-bottom: 1px solid var(--c-border);
}

.card-figure img, .card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%);
  transition: filter 0.2s;
}

.channel-card:hover .card-img { filter: grayscale(0%); }

.card-body {
  padding: 14px 16px;
  flex: 1;
}

.card-title {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 6px;
}

.card-desc {
  font-size: 0.78rem;
  color: var(--c-mid);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* =============================================
   首页：最新收录列表
   ============================================= */
.recent-section {
  padding: 48px 24px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  border-top: 1px solid var(--c-border);
}

.art-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.art-item {
  border-bottom: 1px solid var(--c-border);
  opacity: 0;
  animation: fadeSlideIn 0.4s ease forwards;
  animation-delay: calc(var(--i, 0) * 80ms + 100ms);
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .art-item, .channel-card, .tag-card {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

.art-link {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 8px;
  transition: background 0.1s;
}

.art-link:hover {
  background: var(--c-hover);
  text-decoration: none;
}

.art-num {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--c-border);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  min-width: 36px;
  flex-shrink: 0;
  font-style: italic;
}

.art-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}

.art-title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--c-dark);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.art-date {
  font-size: 0.72rem;
  color: var(--c-mid);
}

/* =============================================
   首页：内容区
   ============================================= */
.content-section {
  padding: 48px 24px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  border-top: 1px solid var(--c-border);
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.content-section > .sec-heading,
.content-section > hr {
  grid-column: 1 / -1;
}

/* =============================================
   频道页
   ============================================= */
.channel-main { flex: 1; }

.channel-hero-section {
  padding: 60px 24px 40px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  position: relative;
  border-bottom: 2px solid var(--c-dark);
}

.channel-h1 {
  font-size: clamp(1.5rem, 5vw, 2.8rem);
  font-weight: 700;
  color: var(--c-dark);
  line-height: 1.2;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.channel-desc {
  font-size: 0.9rem;
  color: var(--c-mid);
  max-width: 600px;
  line-height: 1.6;
}

.channel-num {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 5rem;
  font-weight: 700;
  color: rgba(26,26,26,0.06);
  line-height: 1;
  pointer-events: none;
  user-select: none;
  font-style: italic;
}

.channel-content-section {
  padding: 40px 24px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.channel-content-section > .sec-heading,
.channel-content-section > hr {
  grid-column: 1 / -1;
}

.channel-aside {
  padding: 16px;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-card-bg);
  margin-bottom: 24px;
  transform: rotate(0.2deg);
}

/* 子页 dl 列表 */
.sub-list-section {
  padding: 40px 24px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  border-top: 1px solid var(--c-border);
}

.sub-dl {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.sub-dt {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--c-dark);
  padding: 14px 8px 4px;
  border-top: 1px solid var(--c-border);
  opacity: 0;
  animation: fadeSlideIn 0.4s ease forwards;
  animation-delay: calc(var(--i, 0) * 60ms + 50ms);
}

@media (prefers-reduced-motion: reduce) {
  .sub-dt { animation: none; opacity: 1; }
}

.sub-dt a {
  color: var(--c-dark);
  display: block;
  min-height: 40px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sub-dt a:hover { text-decoration: underline; }

.sub-dd {
  font-size: 0.8rem;
  color: var(--c-mid);
  padding: 4px 8px 14px 16px;
  line-height: 1.6;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  flex-wrap: wrap;
}

.sub-dd time {
  font-size: 0.72rem;
  color: var(--c-border-dark);
  flex-shrink: 0;
  margin-left: auto;
}

.dt-img {
  width: 60px;
  height: 40px;
  object-fit: cover;
  border-radius: 2px;
  flex-shrink: 0;
  filter: grayscale(15%);
}

.dd-desc { flex: 1; min-width: 0; }

/* =============================================
   文章页
   ============================================= */
.article-main { flex: 1; }

.article-header-section {
  padding: 60px 24px 32px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  border-bottom: 2px solid var(--c-dark);
}

.article-h1 {
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 14px;
  color: var(--c-dark);
}

.article-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.78rem;
  color: var(--c-mid);
  margin-bottom: 20px;
}

.art-date-pub, .art-date-mod { font-size: 0.78rem; }

.article-hero-fig {
  margin-top: 16px;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.article-hero-fig img, .article-hero-img {
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: cover;
  filter: grayscale(10%) contrast(1.05);
}

.article-hero-fig figcaption {
  font-size: 0.72rem;
  color: var(--c-mid);
  padding: 6px 10px;
  background: var(--c-card-bg);
  border-top: 1px solid var(--c-border);
}

.article-body-section {
  padding: 40px 24px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.article-aside {
  padding: 16px;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-card-bg);
  transform: rotate(-0.3deg);
}

.aside-back a {
  color: var(--c-mid);
  font-size: 0.78rem;
  margin-top: 8px;
}

.aside-back a:hover { color: var(--c-dark); }

.article-content {
  min-width: 0;
}

.article-footer-section {
  padding: 40px 24px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  border-top: 1px solid var(--c-border);
}

.related-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.related-item a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 8px;
  border-bottom: 1px solid var(--c-border);
  font-size: 0.85rem;
  transition: background 0.1s;
}

.related-item a:hover {
  background: var(--c-hover);
  text-decoration: none;
}

.related-title {
  flex: 1;
  color: var(--c-dark);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-date {
  font-size: 0.7rem;
  color: var(--c-mid);
  flex-shrink: 0;
}

/* =============================================
   标签页
   ============================================= */
.tag-main { flex: 1; }

.tag-header-section {
  padding: 60px 24px 32px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  border-bottom: 2px solid var(--c-dark);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tag-h1 {
  font-size: clamp(1.5rem, 5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-dark);
}

.tag-desc {
  font-size: 0.9rem;
  color: var(--c-mid);
  max-width: 600px;
}

.tag-count-badge {
  display: inline-block;
  background: var(--c-dark);
  color: var(--c-bg);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 2px;
  letter-spacing: 0.08em;
  align-self: flex-start;
  transform: rotate(-1deg);
}

.tag-content-section {
  padding: 40px 24px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.tag-content-section > .sec-heading,
.tag-content-section > hr {
  grid-column: 1 / -1;
}

.tag-aside {
  padding: 16px;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-card-bg);
  margin-bottom: 24px;
  transform: rotate(0.4deg);
}

.tag-list-section {
  padding: 40px 24px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  border-top: 1px solid var(--c-border);
}

.tag-card-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}

.tag-card {
  background: var(--c-card-bg);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transform: rotate(calc(var(--i, 0) * 0.2deg - 0.3deg));
  opacity: 0;
  animation: fadeSlideIn 0.4s ease forwards;
  animation-delay: calc(var(--i, 0) * 60ms + 80ms);
  transition: box-shadow 0.1s, transform 0.1s;
}

.tag-card:hover {
  box-shadow: var(--shadow-hover);
  transform: rotate(0deg) translateY(-2px);
}

.tag-card a {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.tag-card a:hover { text-decoration: none; }

.tag-card-fig {
  overflow: hidden;
  aspect-ratio: 16/9;
  border-bottom: 1px solid var(--c-border);
}

.tag-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(25%);
  transition: filter 0.2s;
}

.tag-card:hover .tag-card-img { filter: grayscale(0%); }

.tag-card-body {
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.tag-card-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--c-dark);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tag-card-date time {
  font-size: 0.7rem;
  color: var(--c-mid);
}

.tag-card-desc {
  font-size: 0.76rem;
  color: var(--c-mid);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* =============================================
   关于页
   ============================================= */
.about-main { flex: 1; }

.about-header-section {
  padding: 60px 24px 32px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  border-bottom: 2px solid var(--c-dark);
  position: relative;
}

.about-h1 {
  font-size: clamp(1.5rem, 5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-dark);
}

.about-stamp {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 4rem;
  font-weight: 700;
  color: rgba(26,26,26,0.06);
  line-height: 1;
  pointer-events: none;
  user-select: none;
  font-style: italic;
  border: 3px solid rgba(26,26,26,0.06);
  border-radius: 4px;
  padding: 4px 12px;
  transform: rotate(4deg);
}

.about-content-section {
  padding: 40px 24px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.about-content-section > .sec-heading,
.about-content-section > hr {
  grid-column: 1 / -1;
}

.about-aside {
  padding: 16px;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-card-bg);
  margin-bottom: 24px;
  transform: rotate(-0.3deg);
}

.about-extra-section {
  padding: 40px 24px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  border-top: 1px solid var(--c-border);
}

.about-channel-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.about-channel-item {
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-card-bg);
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.1s, transform 0.1s;
}

.about-channel-item a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  min-height: 80px;
}

.about-channel-item a:hover {
  text-decoration: none;
}

.about-channel-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.about-channel-item strong {
  font-size: 0.88rem;
  color: var(--c-dark);
}

.about-channel-item span {
  font-size: 0.76rem;
  color: var(--c-mid);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* =============================================
   隐私页
   ============================================= */
.privacy-main { flex: 1; }

.privacy-header-section {
  padding: 60px 24px 32px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  border-bottom: 2px solid var(--c-dark);
}

.privacy-h1 {
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  font-weight: 700;
  color: var(--c-dark);
  line-height: 1.2;
  margin-bottom: 10px;
}

.privacy-updated {
  font-size: 0.78rem;
  color: var(--c-mid);
}

.privacy-content-section {
  padding: 40px 24px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.privacy-content-section > .sec-heading,
.privacy-content-section > hr {
  grid-column: 1 / -1;
}

.privacy-aside {
  padding: 16px;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-card-bg);
  margin-bottom: 24px;
  transform: rotate(0.2deg);
}

.privacy-footer-section {
  padding: 40px 24px;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  border-top: 1px solid var(--c-border);
}

.privacy-notice {
  font-size: 0.85rem;
  color: var(--c-mid);
  line-height: 1.7;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  background: var(--c-card-bg);
}

.privacy-notice a {
  color: var(--c-dark);
  text-decoration: underline;
}

/* =============================================
   正文内容（page-content 通用）
   ============================================= */
.page-content {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-dark);
  max-width: var(--max-content);
  min-width: 0;
}

.page-content h2 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 28px 0 8px;
  letter-spacing: -0.01em;
}

.page-content h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 22px 0 6px;
}

.page-content p { margin-bottom: 16px; }

.page-content ul, .page-content ol {
  margin: 0 0 16px 20px;
}

.page-content ul { list-style: disc; }
.page-content ol { list-style: decimal; }

.page-content li { margin-bottom: 6px; line-height: 1.7; }

.page-content a {
  color: var(--c-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-content a:hover { opacity: 0.7; }

.page-content strong, .page-content b { font-weight: 700; }

.page-content em { font-style: italic; opacity: 0.85; }

.page-content blockquote {
  border-left: 3px solid var(--c-dark);
  padding: 8px 16px;
  margin: 20px 0;
  color: var(--c-mid);
  font-size: 0.95rem;
  background: var(--c-card-bg);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-bottom: 20px;
}

.page-content th, .page-content td {
  border: 1px solid var(--c-border);
  padding: 8px 12px;
  text-align: left;
}

.page-content th {
  background: var(--c-card-bg);
  font-weight: 700;
}

.page-content img {
  max-width: 100%;
  border-radius: var(--radius);
  margin: 12px 0;
}

.page-content time { font-size: 0.8rem; color: var(--c-mid); }

/* =============================================
   布局：桌面两栏（内容 + aside）
   ============================================= */
@media (min-width: 768px) {
  .channel-content-section,
  .article-body-section,
  .tag-content-section,
  .about-content-section,
  .privacy-content-section,
  .content-section {
    grid-template-columns: 1fr 220px;
    align-items: start;
    gap: 32px;
  }

  .channel-content-section > .sec-heading,
  .channel-content-section > hr,
  .article-body-section > .sec-heading,
  .article-body-section > hr,
  .tag-content-section > .sec-heading,
  .tag-content-section > hr,
  .about-content-section > .sec-heading,
  .about-content-section > hr,
  .privacy-content-section > .sec-heading,
  .privacy-content-section > hr,
  .content-section > .sec-heading,
  .content-section > hr {
    grid-column: 1 / -1;
  }

  /* aside 放右侧，需要调换顺序 */
  .channel-aside,
  .tag-aside,
  .about-aside,
  .privacy-aside,
  .article-aside {
    order: 2;
    margin-bottom: 0;
    position: sticky;
    top: 16px;
  }

  .page-content,
  .channel-content-section .page-content,
  .tag-content-section .page-content,
  .about-content-section .page-content,
  .privacy-content-section .page-content {
    order: 1;
  }

  .channel-aside { order: 2; }
  .channels-note { margin-bottom: 28px; }
}

/* =============================================
   响应式：移动端
   ============================================= */
@media (max-width: 639px) {
  body { font-size: 16px; }

  .hero-section { padding: 40px 16px 72px; }
  .hero-h1 { font-size: 1.8rem; }
  .hero-sub { font-size: 0.88rem; }

  .channels-section,
  .recent-section,
  .content-section,
  .channel-hero-section,
  .channel-content-section,
  .sub-list-section,
  .article-header-section,
  .article-body-section,
  .article-footer-section,
  .tag-header-section,
  .tag-content-section,
  .tag-list-section,
  .about-header-section,
  .about-content-section,
  .about-extra-section,
  .privacy-header-section,
  .privacy-content-section,
  .privacy-footer-section {
    padding-left: 16px;
    padding-right: 16px;
  }

  .channel-list {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .tag-card-list {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .nav-list li a {
    padding: 10px 6px;
    font-size: 0.7rem;
  }

  .footer-inner {
    flex-wrap: wrap;
    gap: 8px;
    padding: 12px 16px;
  }

  .footer-copy {
    width: 100%;
    text-align: center;
    margin-left: 0;
  }

  .channel-num { font-size: 3rem; }
  .hero-bg-num { font-size: 7rem; }
}

@media (max-width: 400px) {
  .channel-list,
  .tag-card-list { grid-template-columns: 1fr; }

  .nav-list { gap: 0; }

  .nav-list li a {
    padding: 8px 5px;
    font-size: 0.65rem;
  }
}

/* =============================================
   Hover 微交互（非移动端）
   ============================================= */
@media (hover: hover) and (pointer: fine) {
  .sub-dt a:hover .sub-title { text-decoration: underline; }

  .about-channel-item a:hover strong { text-decoration: underline; }

  .art-link:hover .art-num {
    color: var(--c-dark);
  }
}