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

/* ===== 变量 & 重置 ===== */
:root {
  --c-blue: #3bb1ff;
  --c-red: #ff5252;
  --c-black: #000000;
  --c-white: #ffffff;
  --c-bg: #f5f5f0;
  --c-bg2: #ebebeb;
  --c-text: #111111;
  --border: 3px solid var(--c-black);
  --shadow: 5px 5px 0 var(--c-black);
  --shadow-sm: 3px 3px 0 var(--c-black);
  --shadow-lg: 8px 8px 0 var(--c-black);
  --radius-card: 0px;
  --font-main: 'Outfit', 'Work Sans', system-ui, sans-serif;
  --nav-h: 64px;
  --announce-h: 36px;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.65;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: var(--font-main); }

/* ===== 公告条 ===== */
.announce-bar {
  background: var(--c-black);
  color: var(--c-white);
  text-align: center;
  padding: 0 1rem;
  height: var(--announce-h);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  position: sticky;
  top: 0;
  z-index: 200;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: var(--announce-h);
  z-index: 150;
  background: var(--c-blue);
  border-bottom: var(--border);
  height: var(--nav-h);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
}

.site-logo { height: 36px; width: auto; }

.site-brand-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-black);
  letter-spacing: -0.02em;
}

/* ===== 汉堡按钮 ===== */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  background: var(--c-white);
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 10px 12px;
  transition: box-shadow 0.15s, transform 0.15s;
}

.hamburger span {
  display: block;
  height: 3px;
  background: var(--c-black);
  border-radius: 0;
  transition: transform 0.2s;
}

.hamburger:hover {
  box-shadow: 2px 2px 0 var(--c-black);
  transform: translate(2px, 2px);
}

/* ===== 全屏导航遮罩 ===== */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: var(--c-black);
  z-index: 500;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 3rem 2rem 3rem 3rem;
  transform: translateX(-100%);
  transition: transform 0.3s cubic-bezier(0.77,0,0.175,1);
}

.nav-overlay.is-open {
  transform: translateX(0);
}

.nav-overlay nav {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
  max-width: 600px;
}

.nav-overlay-link {
  display: block;
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  font-weight: 700;
  color: var(--c-white);
  padding: 0.75rem 1rem;
  border-left: 4px solid transparent;
  letter-spacing: -0.01em;
  min-height: 44px;
  display: flex;
  align-items: center;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.nav-overlay-link:hover {
  color: var(--c-blue);
  border-left-color: var(--c-blue);
  background: rgba(59,177,255,0.08);
}

.nav-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: var(--c-red);
  color: var(--c-white);
  border: var(--border);
  box-shadow: var(--shadow-sm);
  width: 48px;
  height: 48px;
  font-size: 1.2rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: box-shadow 0.15s, transform 0.15s;
}

.nav-close:hover {
  box-shadow: 2px 2px 0 var(--c-black);
  transform: translate(2px, 2px);
}

/* ===== 按钮 ===== */
.btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-main);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.7rem 1.5rem;
  border: var(--border);
  box-shadow: var(--shadow);
  cursor: pointer;
  min-height: 44px;
  transition: box-shadow 0.15s, transform 0.15s;
  letter-spacing: 0.02em;
}

.btn-primary {
  background: var(--c-blue);
  color: var(--c-black);
}

.btn-secondary {
  background: var(--c-white);
  color: var(--c-black);
}

.btn-primary:hover, .btn-secondary:hover {
  box-shadow: 2px 2px 0 var(--c-black);
  transform: translate(3px, 3px);
}

.btn-sm {
  font-size: 0.85rem;
  padding: 0.5rem 1.1rem;
}

/* ===== HR 装饰 ===== */
hr {
  border: none;
  border-top: 3px solid var(--c-black);
  margin: 1rem 0 1.5rem;
}

/* ===== Aside 通用 ===== */
.aside-card {
  background: var(--c-white);
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.aside-title {
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-black);
  background: var(--c-blue);
  margin: -1.25rem -1.25rem 1rem;
  padding: 0.5rem 1.25rem;
  border-bottom: var(--border);
}

.aside-links { display: flex; flex-direction: column; gap: 0.5rem; }

.aside-links a {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--c-text);
  padding: 0.4rem 0.5rem;
  border-left: 3px solid transparent;
  transition: border-color 0.15s, color 0.15s;
  min-height: 40px;
  display: flex;
  align-items: center;
}

.aside-links a:hover {
  border-left-color: var(--c-red);
  color: var(--c-red);
}

.aside-topic-list { display: flex; flex-direction: column; gap: 0.4rem; }
.aside-topic-list a {
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.4rem 0.5rem;
  display: flex;
  align-items: center;
  min-height: 40px;
  border-left: 3px solid transparent;
  transition: border-color 0.15s, color 0.15s;
}
.aside-topic-list a:hover { border-left-color: var(--c-blue); color: var(--c-blue); }

/* ===== 标签 ===== */
.tag-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.tag-pill {
  display: inline-flex;
  align-items: center;
  background: var(--c-red);
  color: var(--c-white);
  border: 2px solid var(--c-black);
  box-shadow: 2px 2px 0 var(--c-black);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.3rem 0.75rem;
  min-height: 32px;
  letter-spacing: 0.05em;
  transition: box-shadow 0.15s, transform 0.15s;
}

.tag-pill:hover {
  box-shadow: 1px 1px 0 var(--c-black);
  transform: translate(1px, 1px);
}

/* ===== 首页 Hero ===== */
.hero-section {
  min-height: 100vh;
  background: var(--c-bg);
  border-bottom: var(--border);
  display: flex;
  align-items: stretch;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  width: 100%;
  min-height: 100vh;
}

.hero-media {
  background: var(--c-black);
  border-right: var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.hero-visual-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  padding: 2rem;
}

.hero-badge {
  background: var(--c-blue);
  color: var(--c-black);
  border: var(--border);
  box-shadow: var(--shadow-lg);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  padding: 1rem 2rem;
  letter-spacing: -0.02em;
}

.hero-stat-block {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-stat {
  background: var(--c-red);
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 1rem 1.25rem;
  text-align: center;
  min-width: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.hero-stat strong {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-white);
  display: block;
}

.hero-stat span {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--c-white);
  letter-spacing: 0.05em;
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  padding: 3rem 3rem 3rem 2rem;
  text-align: right;
}

.hero-content h1 {
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  color: var(--c-black);
}

.hero-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #333;
  margin-bottom: 2rem;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* ===== 首页通用 section ===== */
.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.section-inner h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

/* ===== 专题卡片（首页） ===== */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.topic-card {
  background: var(--c-white);
  border: var(--border);
  box-shadow: var(--shadow);
  transition: box-shadow 0.15s, transform 0.15s;
}

.topic-card:hover {
  box-shadow: 2px 2px 0 var(--c-black);
  transform: translate(3px, 3px);
}

.topic-card-inner {
  padding: 1.5rem;
  border-bottom: 4px solid var(--c-blue);
}

.topic-tag {
  display: inline-block;
  background: var(--c-blue);
  color: var(--c-black);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.6rem;
  border: 2px solid var(--c-black);
  margin-bottom: 0.75rem;
}

.topic-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.topic-card h3 a:hover { color: var(--c-blue); }

.topic-card p {
  font-size: 0.9rem;
  color: #444;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.topic-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.article-count {
  font-size: 0.78rem;
  font-weight: 700;
  color: #666;
  letter-spacing: 0.05em;
}

.card-cta {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--c-black);
  background: var(--c-red);
  padding: 0.3rem 0.75rem;
  border: 2px solid var(--c-black);
  box-shadow: 2px 2px 0 var(--c-black);
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  transition: box-shadow 0.15s, transform 0.15s;
}

.card-cta:hover {
  box-shadow: 1px 1px 0 var(--c-black);
  transform: translate(1px, 1px);
}

/* ===== 文章列表行（首页最新） ===== */
.article-list { display: flex; flex-direction: column; gap: 0; }

.article-row {
  display: grid;
  grid-template-columns: 120px 1fr 1fr;
  gap: 1rem;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 2px solid var(--c-black);
  transition: background 0.15s;
}

.article-row:first-child { border-top: 2px solid var(--c-black); }

.article-row:hover { background: var(--c-blue); }

.art-date {
  font-size: 0.78rem;
  font-weight: 700;
  color: #555;
  letter-spacing: 0.05em;
}

.article-row-title a {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.35;
}

.article-row-title a:hover { color: var(--c-black); text-decoration: underline; }

.article-row-desc {
  font-size: 0.85rem;
  color: #555;
  line-height: 1.5;
}

.view-more-row {
  margin-top: 2rem;
  display: flex;
  justify-content: flex-end;
}

.home-content-section .section-inner { padding-bottom: 0; }

/* ===== 首页 Site Aside ===== */
.site-aside {
  position: fixed;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  width: 160px;
}

.aside-inner {
  background: var(--c-white);
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 1rem;
}

.aside-inner .aside-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  background: var(--c-red);
  color: var(--c-white);
  margin: -1rem -1rem 0.75rem;
  padding: 0.4rem 1rem;
  border-bottom: var(--border);
}

.aside-inner ul { display: flex; flex-direction: column; gap: 0.4rem; }

.aside-inner ul a {
  font-size: 0.78rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  min-height: 32px;
  padding: 0.2rem 0.3rem;
  border-left: 3px solid transparent;
  transition: border-color 0.15s;
}

.aside-inner ul a:hover { border-left-color: var(--c-blue); color: var(--c-blue); }

/* ===== 专题页 ===== */
.topic-hero {
  background: var(--c-blue);
  border-bottom: var(--border);
  padding: 4rem 1.5rem 3rem;
}

.topic-hero-inner {
  max-width: 800px;
  margin: 0 auto;
}

.topic-eyebrow {
  display: inline-block;
  background: var(--c-black);
  color: var(--c-white);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  padding: 0.25rem 0.75rem;
  margin-bottom: 1rem;
}

.topic-hero-inner h1 {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.topic-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #111;
  margin-bottom: 1rem;
}

.topic-meta-bar {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.topic-count {
  font-size: 0.85rem;
  font-weight: 700;
  background: var(--c-white);
  border: 2px solid var(--c-black);
  padding: 0.25rem 0.75rem;
  box-shadow: 2px 2px 0 var(--c-black);
}

.topic-body-section { padding: 2rem 0 4rem; }

.topic-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
  align-items: start;
}

.topic-aside { position: sticky; top: calc(var(--announce-h) + var(--nav-h) + 1rem); }

.topic-content { margin-bottom: 3rem; }

.child-list-block h2 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.child-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.child-card {
  background: var(--c-white);
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  border-bottom: 4px solid var(--c-red);
  transition: box-shadow 0.15s, transform 0.15s;
}

.child-card:hover {
  box-shadow: 2px 2px 0 var(--c-black);
  transform: translate(3px, 3px);
}

.child-card-eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  color: #777;
  margin-bottom: 0.5rem;
}

.child-card-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.5rem;
}

.child-card-title a:hover { color: var(--c-blue); }

.child-card-desc {
  font-size: 0.875rem;
  color: #444;
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.child-card-link {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--c-black);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.empty-tip {
  color: #888;
  font-style: italic;
  padding: 1rem 0;
}

/* ===== 文章页 ===== */
.article-header-section {
  background: var(--c-black);
  color: var(--c-white);
  padding: 3.5rem 1.5rem 2.5rem;
  border-bottom: var(--border);
}

.article-header-inner {
  max-width: 900px;
  margin: 0 auto;
}

.breadcrumb {
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--c-blue); }
.breadcrumb a:hover { text-decoration: underline; }

.article-header-inner h1 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--c-white);
}

.article-dates {
  font-size: 0.82rem;
  font-weight: 600;
  color: #aaa;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.date-label { color: #777; }

.article-lead {
  font-size: 1.05rem;
  color: #ccc;
  line-height: 1.7;
}

.article-body-section { padding: 2rem 0 4rem; }

.article-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
  align-items: start;
}

.article-aside { position: sticky; top: calc(var(--announce-h) + var(--nav-h) + 1rem); }

.article-content { margin-bottom: 2rem; }

.article-footer-meta {
  font-size: 0.82rem;
  color: #888;
  font-weight: 600;
  margin-bottom: 1.5rem;
  padding-top: 1rem;
  border-top: 2px solid var(--c-black);
}

.article-back-block {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

/* ===== 关于页 ===== */
.about-banner {
  background: var(--c-red);
  border-bottom: var(--border);
  padding: 4rem 1.5rem 3rem;
}

.about-banner-inner {
  max-width: 800px;
  margin: 0 auto;
}

.about-banner-inner h1 {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0.75rem 0 1rem;
  color: var(--c-white);
}

.about-lead {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.85);
  line-height: 1.7;
}

.about-body-section { padding: 2rem 0 4rem; }

.about-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
  align-items: start;
}

.about-aside { position: sticky; top: calc(var(--announce-h) + var(--nav-h) + 1rem); }

.about-stat-row {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.stat-block {
  background: var(--c-blue);
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 1.25rem 1.5rem;
  text-align: center;
  min-width: 110px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.stat-block strong {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--c-black);
  display: block;
  line-height: 1;
}

.stat-block span {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--c-black);
  letter-spacing: 0.05em;
}

.about-cta-block { margin-top: 3rem; }

.about-cta-block h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.about-cta-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

/* ===== 隐私页 ===== */
.privacy-header-section {
  background: var(--c-bg2);
  border-bottom: var(--border);
  padding: 3.5rem 1.5rem 2.5rem;
}

.privacy-header-inner {
  max-width: 800px;
  margin: 0 auto;
}

.privacy-header-inner h1 {
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0.75rem 0 1rem;
}

.privacy-date {
  font-size: 0.82rem;
  font-weight: 600;
  color: #666;
  margin-bottom: 0.75rem;
}

.privacy-lead {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #333;
}

.privacy-body-section { padding: 2rem 0 4rem; }

.privacy-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
  align-items: start;
}

.privacy-aside { position: sticky; top: calc(var(--announce-h) + var(--nav-h) + 1rem); }

.privacy-back-block {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--c-black);
}

/* ===== 标签页 ===== */
.tag-hero {
  background: var(--c-black);
  color: var(--c-white);
  padding: 3.5rem 1.5rem 2.5rem;
  border-bottom: var(--border);
}

.tag-hero-inner {
  max-width: 800px;
  margin: 0 auto;
}

.tag-hero-inner h1 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0.75rem 0 1rem;
  color: var(--c-blue);
}

.tag-hero-inner p {
  font-size: 1.05rem;
  color: #ccc;
  line-height: 1.7;
}

.tag-body-section { padding: 2rem 0 4rem; }

.tag-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
  align-items: start;
}

.tag-aside { position: sticky; top: calc(var(--announce-h) + var(--nav-h) + 1rem); }

.tag-article-block { margin-top: 2.5rem; }

.tag-article-block h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.tag-article-dl { margin-top: 1.5rem; }

.tag-article-dl dt {
  font-size: 1rem;
  font-weight: 700;
  margin-top: 1.25rem;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid var(--c-blue);
  display: inline-block;
}

.tag-article-dl dt a:hover { color: var(--c-blue); }

.tag-article-desc {
  font-size: 0.875rem;
  color: #555;
  line-height: 1.6;
  margin: 0.3rem 0 0;
  padding-left: 0.5rem;
}

.tag-date { color: #888; font-size: 0.78rem; font-weight: 700; }

/* ===== 默认页 ===== */
.default-header-section {
  background: var(--c-blue);
  border-bottom: var(--border);
  padding: 3rem 1.5rem 2rem;
}

.default-header-inner {
  max-width: 800px;
  margin: 0 auto;
}

.default-header-inner h1 {
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.default-header-inner p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: #111;
}

.default-body-section { padding: 2rem 0 4rem; }

.default-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
  align-items: start;
}

.default-aside { position: sticky; top: calc(var(--announce-h) + var(--nav-h) + 1rem); }

/* ===== Prose（正文排版） ===== */
.prose {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-text);
  max-width: 720px;
}

.prose h2 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 2rem 0 0.5rem;
}

.prose h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 1.5rem 0 0.5rem;
}

.prose h2 + hr, .prose h3 + hr { margin: 0.3rem 0 1rem; }

.prose p { margin-bottom: 1.1rem; }

.prose ul, .prose ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
  list-style: disc;
}

.prose ol { list-style: decimal; }

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

.prose a {
  color: var(--c-blue);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose a:hover { color: var(--c-red); }

.prose strong { font-weight: 700; }

.prose blockquote {
  border-left: 4px solid var(--c-blue);
  padding: 0.75rem 1rem;
  margin: 1.5rem 0;
  background: var(--c-bg2);
  font-style: italic;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

.prose table th, .prose table td {
  border: 2px solid var(--c-black);
  padding: 0.5rem 0.75rem;
  text-align: left;
}

.prose table th { background: var(--c-black); color: var(--c-white); font-weight: 700; }

/* ===== 页脚 ===== */
.site-footer {
  border-top: var(--border);
  background: var(--c-white);
}

.footer-subscribe {
  background: var(--c-blue);
  border-bottom: var(--border);
  padding: 2rem 1.5rem;
}

.footer-subscribe-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-subscribe-text {
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-black);
  margin: 0;
}

.footer-main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 1rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-address {
  font-size: 0.82rem;
  font-weight: 600;
  color: #555;
  font-style: normal;
  flex: 1 1 200px;
  min-width: 0;
  display: flex;
  align-items: center;
}

.footer-nav-dl {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  font-size: 0.82rem;
}

.footer-nav-dl dt, .footer-nav-dl dd { display: inline; margin: 0; }

.footer-nav-dl dt a, .footer-nav-dl dd a {
  font-weight: 700;
  color: var(--c-black);
  padding: 0.4rem 0.2rem;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  transition: color 0.15s;
}

.footer-nav-dl dt a { color: var(--c-blue); }
.footer-nav-dl dt a:hover, .footer-nav-dl dd a:hover { color: var(--c-red); }

.footer-link-list {
  display: flex;
  gap: 0.5rem 1.25rem;
  flex-wrap: wrap;
  font-size: 0.82rem;
}

.footer-link-list li a {
  font-weight: 700;
  color: #555;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  transition: color 0.15s;
}

.footer-link-list li a:hover { color: var(--c-red); }

.footer-copy {
  width: 100%;
  font-size: 0.75rem;
  color: #888;
  font-weight: 500;
  padding-top: 0.75rem;
  border-top: 2px solid var(--c-black);
  text-align: center;
}

/* ===== Scroll Reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hamburger, .btn-primary, .btn-secondary, .topic-card,
  .child-card, .nav-overlay-link, .tag-pill, .card-cta { transition: none; }
  .nav-overlay { transition: none; }
}

/* ===== 响应式 ===== */
@media (max-width: 1100px) {
  .site-aside { display: none; }
  .topic-layout, .article-layout, .about-layout,
  .privacy-layout, .tag-layout, .default-layout {
    grid-template-columns: 200px 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 800px) {
  .hero-layout {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .hero-media { min-height: 280px; border-right: none; border-bottom: var(--border); }
  .hero-content {
    align-items: flex-start;
    text-align: left;
    padding: 2rem 1.5rem;
  }
  .hero-actions { justify-content: flex-start; }

  .topic-layout, .article-layout, .about-layout,
  .privacy-layout, .tag-layout, .default-layout {
    grid-template-columns: 1fr;
  }

  .topic-aside, .article-aside, .about-aside,
  .privacy-aside, .tag-aside, .default-aside {
    position: static;
  }

  .article-row {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .about-stat-row { gap: 0.75rem; }

  .footer-main {
    flex-direction: column;
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  :root { --nav-h: 56px; }
  .announce-bar { font-size: 0.72rem; }
  .section-inner { padding: 2.5rem 1rem; }
  .topic-grid, .child-card-grid { grid-template-columns: 1fr; }
  .hero-visual-block { padding: 1.5rem 1rem; }
  .hero-stat-block { gap: 0.75rem; }
  .footer-subscribe-inner { flex-direction: column; align-items: flex-start; }
  .about-cta-links { flex-direction: column; }
  .article-back-block { flex-direction: column; }
  .privacy-back-block { flex-direction: column; }
}