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

/* ===== 设计令牌 ===== */
:root {
  --mint: #99ffcc;
  --green: #00ff41;
  --deep: #001e3c;
  --deep2: #002a52;
  --deep3: #003366;
  --text-main: #d4f7e8;
  --text-muted: #7abfa0;
  --text-dim: #4a8a70;
  --surface: rgba(0, 30, 60, 0.85);
  --surface2: rgba(0, 42, 82, 0.7);
  --radius-blob: 60% 40% 55% 45% / 45% 55% 45% 55%;
  --radius-blob2: 45% 55% 40% 60% / 55% 45% 60% 40%;
  --font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --nav-h: 64px;
  --max-prose: 720px;
  --max-wide: 1100px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font);
  background: var(--deep);
  color: var(--text-main);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ===== 细胞流动纹理叠底 ===== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(ellipse 80px 60px at 15% 20%, rgba(153, 255, 204, 0.06) 0%, transparent 70%),
    radial-gradient(ellipse 120px 90px at 75% 65%, rgba(0, 255, 65, 0.04) 0%, transparent 70%),
    radial-gradient(ellipse 60px 100px at 45% 85%, rgba(153, 255, 204, 0.05) 0%, transparent 70%),
    radial-gradient(ellipse 200px 140px at 88% 10%, rgba(0, 255, 65, 0.03) 0%, transparent 70%);
  animation: cell-drift 18s ease-in-out infinite alternate;
}

@keyframes cell-drift {
  0%   { opacity: 0.7; transform: scale(1) translateY(0); }
  100% { opacity: 1;   transform: scale(1.03) translateY(-12px); }
}

@media (prefers-reduced-motion: reduce) {
  body::before { animation: none; }
}

/* ===== 通用工具 ===== */
.page-shell {
  position: relative;
  z-index: 1;
}

a {
  color: var(--green);
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}
a:hover { color: var(--mint); }
a:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
  border-radius: 3px;
}

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

/* ===== 顶部导航栏 ===== */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(0, 30, 60, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(153, 255, 204, 0.12);
}

.top-bar-inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  gap: 16px;
}

.brand-center {
  flex: 1;
  display: flex;
  justify-content: center;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--mint);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}
.brand-link:hover { color: var(--green); }

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 50%;
}

.brand-name {
  white-space: nowrap;
}

.top-bar-cta {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--deep);
  background: var(--mint);
  padding: 8px 18px;
  border-radius: 40px;
  white-space: nowrap;
  transition: background var(--transition), transform var(--transition);
  min-height: 40px;
  display: flex;
  align-items: center;
}
.top-bar-cta:hover {
  background: var(--green);
  color: var(--deep);
  transform: translateY(-1px);
}

/* ===== 汉堡菜单（移动端） ===== */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-shrink: 0;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--mint);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== 侧边导航 aside（结构抽签：aside > nav > ul > li > a） ===== */
.site-nav-aside {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  bottom: 0;
  width: 260px;
  background: rgba(0, 26, 52, 0.97);
  border-right: 1px solid rgba(153, 255, 204, 0.1);
  overflow-y: auto;
  z-index: 90;
  transform: translateX(-100%);
  transition: transform var(--transition);
  padding: 24px 0 24px;
}

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

.site-nav-aside nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-nav-aside nav ul li a {
  display: block;
  padding: 12px 24px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  border-left: 3px solid transparent;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  line-height: 1.4;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.site-nav-aside nav ul li a:hover,
.site-nav-aside nav ul li a[aria-current="page"] {
  color: var(--mint);
  border-left-color: var(--green);
  background: rgba(153, 255, 204, 0.06);
}

/* ===== Hero ===== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  padding: 80px 32px 60px;
}

.hero-text {
  position: relative;
  z-index: 2;
  max-width: 600px;
  margin-left: max(32px, calc(50vw - 500px));
}

.hero-badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--deep);
  background: var(--green);
  padding: 5px 14px;
  border-radius: 40px;
  margin-bottom: 24px;
  animation: badge-pulse 3s ease-in-out infinite;
}

@keyframes badge-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 255, 65, 0.4); }
  50%       { box-shadow: 0 0 0 8px rgba(0, 255, 65, 0); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-badge { animation: none; }
}

.hero-h1 {
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--mint);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.hero-lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  max-width: 480px;
  line-height: 1.7;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--deep);
  background: linear-gradient(135deg, var(--mint) 0%, var(--green) 100%);
  padding: 14px 32px;
  border-radius: 50px;
  transition: transform var(--transition), box-shadow var(--transition);
  min-height: 48px;
}
.hero-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0, 255, 65, 0.25);
  color: var(--deep);
}

.hero-media {
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 50vw;
  max-width: 600px;
  opacity: 0.18;
  z-index: 1;
  pointer-events: none;
}

.hero-media .article-hero-img,
.hero-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-blob);
  animation: blob-breathe 8s ease-in-out infinite;
}

.hero-media-empty {
  display: flex;
  align-items: center;
  justify-content: center;
}

.cell-blob {
  width: 400px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(153, 255, 204, 0.3) 0%, transparent 70%);
  border-radius: var(--radius-blob);
  animation: blob-breathe 8s ease-in-out infinite;
}

@keyframes blob-breathe {
  0%   { border-radius: 60% 40% 55% 45% / 45% 55% 45% 55%; transform: scale(1); }
  33%  { border-radius: 45% 55% 40% 60% / 60% 40% 55% 45%; transform: scale(1.04); }
  66%  { border-radius: 55% 45% 60% 40% / 40% 60% 45% 55%; transform: scale(0.97); }
  100% { border-radius: 60% 40% 55% 45% / 45% 55% 45% 55%; transform: scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  .cell-blob, .hero-media img { animation: none; }
}

.hero-blob-1,
.hero-blob-2 {
  position: absolute;
  border-radius: var(--radius-blob);
  pointer-events: none;
  z-index: 0;
}

.hero-blob-1 {
  width: 320px;
  height: 260px;
  top: 10%;
  right: 5%;
  background: radial-gradient(ellipse, rgba(0, 255, 65, 0.07) 0%, transparent 70%);
  animation: blob-breathe 12s ease-in-out infinite;
}

.hero-blob-2 {
  width: 200px;
  height: 280px;
  bottom: 5%;
  left: 40%;
  background: radial-gradient(ellipse, rgba(153, 255, 204, 0.05) 0%, transparent 70%);
  animation: blob-breathe 9s ease-in-out infinite reverse;
}

@media (prefers-reduced-motion: reduce) {
  .hero-blob-1, .hero-blob-2 { animation: none; }
}

/* ===== 首页主体 ===== */
.home-main {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 60px 24px 80px;
}

.home-content-section {
  margin-bottom: 72px;
}

.content-prose {
  max-width: var(--max-prose);
}

.home-cards-section {
  margin-top: 40px;
}

.home-cards-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--mint);
  margin-bottom: 8px;
}

/* ===== 子页卡片（结构抽签：一组并列 a 块，内部 strong/span） ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 28px;
}

.child-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--surface2);
  padding: 24px;
  border-radius: 0;
  border: 1px solid rgba(153, 255, 204, 0.12);
  color: var(--text-main);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}

.child-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--green), var(--mint));
  opacity: 0;
  transition: opacity var(--transition);
}

.child-card:hover {
  border-color: rgba(153, 255, 204, 0.3);
  background: rgba(0, 42, 82, 0.9);
  transform: translateY(-3px);
  color: var(--text-main);
}

.child-card:hover::before {
  opacity: 1;
}

.child-card strong {
  font-size: 1rem;
  font-weight: 600;
  color: var(--mint);
  line-height: 1.4;
}

.card-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== article 布局 ===== */
.article-layout-wrap {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 48px 24px 80px;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 48px;
  align-items: start;
}

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

.article-hero-wrap {
  margin-bottom: 32px;
  border-radius: 0;
  overflow: hidden;
}

.article-hero-img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.pub-date,
.mod-date {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-weight: 500;
}

.breadcrumb-link {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: auto;
}

.article-h1 {
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--mint);
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.article-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  line-height: 1.7;
}

.article-header-section {
  padding-bottom: 8px;
}

.article-body-section {
  border-top: 1px solid rgba(153, 255, 204, 0.1);
  padding-top: 36px;
}

.article-prose {
  max-width: var(--max-prose);
}

/* ===== 相关文章 aside ===== */
.related-aside {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  background: var(--surface2);
  border: 1px solid rgba(153, 255, 204, 0.1);
  padding: 28px 24px;
}

.related-aside h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--mint);
  margin-bottom: 6px;
}

.related-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 16px;
}

.related-list li a {
  display: block;
  padding: 10px 12px;
  font-size: 0.875rem;
  color: var(--text-muted);
  border-left: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  line-height: 1.5;
  min-height: 40px;
  display: flex;
  align-items: center;
}

.related-list li a:hover {
  color: var(--mint);
  border-left-color: var(--green);
  background: rgba(153, 255, 204, 0.05);
}

/* ===== About 布局 ===== */
.about-layout-wrap {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 48px 24px 80px;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 48px;
  align-items: start;
}

.about-eyebrow,
.privacy-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--green);
  background: rgba(0, 255, 65, 0.1);
  padding: 4px 12px;
  border-radius: 40px;
  margin-bottom: 20px;
}

.about-h1,
.privacy-h1 {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 700;
  color: var(--mint);
  line-height: 1.25;
  margin-bottom: 16px;
}

.about-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  line-height: 1.7;
}

.about-intro-section {
  margin-bottom: 8px;
}

.about-content-section {
  border-top: 1px solid rgba(153, 255, 204, 0.1);
  padding-top: 36px;
  margin-bottom: 56px;
}

.about-prose {
  max-width: var(--max-prose);
}

.about-links-section h2 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--mint);
  margin-bottom: 8px;
}

.quick-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.quick-link-block {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--surface2);
  padding: 20px;
  border: 1px solid rgba(153, 255, 204, 0.1);
  color: var(--text-main);
  transition: border-color var(--transition), transform var(--transition);
}

.quick-link-block:hover {
  border-color: rgba(153, 255, 204, 0.3);
  transform: translateY(-2px);
  color: var(--text-main);
}

.quick-link-block strong {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--mint);
}

.quick-link-block span {
  font-size: 0.825rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.about-aside {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  background: var(--surface2);
  border: 1px solid rgba(153, 255, 204, 0.1);
  padding: 28px 24px;
}

.about-aside h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--mint);
  margin-bottom: 6px;
}

.about-info-list {
  list-style: none;
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.about-info-list li {
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: 8px 0;
  border-bottom: 1px solid rgba(153, 255, 204, 0.08);
  min-height: 40px;
  display: flex;
  align-items: center;
}

/* ===== Privacy 布局 ===== */
.privacy-layout-wrap {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 48px 24px 80px;
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 48px;
  align-items: start;
}

.privacy-header-section {
  margin-bottom: 8px;
}

.privacy-body-section {
  border-top: 1px solid rgba(153, 255, 204, 0.1);
  padding-top: 36px;
}

.privacy-prose {
  max-width: var(--max-prose);
}

.privacy-aside {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  background: var(--surface2);
  border: 1px solid rgba(153, 255, 204, 0.1);
  padding: 28px 24px;
}

.privacy-aside h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--mint);
  margin-bottom: 6px;
}

.privacy-nav-list {
  list-style: none;
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.privacy-nav-list li a {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  font-size: 0.875rem;
  color: var(--text-muted);
  border-left: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  min-height: 40px;
}

.privacy-nav-list li a:hover {
  color: var(--mint);
  border-left-color: var(--green);
  background: rgba(153, 255, 204, 0.05);
}

/* ===== 通用 prose 样式 ===== */
.content-prose h2,
.article-prose h2,
.about-prose h2,
.privacy-prose h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--mint);
  margin-top: 48px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(153, 255, 204, 0.15);
}

.content-prose h3,
.article-prose h3,
.about-prose h3,
.privacy-prose h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
  margin-top: 32px;
  margin-bottom: 10px;
}

.content-prose p,
.article-prose p,
.about-prose p,
.privacy-prose p {
  margin-bottom: 18px;
  color: var(--text-main);
  font-size: 1rem;
  line-height: 1.8;
}

.content-prose ul,
.article-prose ul,
.about-prose ul,
.privacy-prose ul,
.content-prose ol,
.article-prose ol,
.about-prose ol,
.privacy-prose ol {
  margin: 0 0 18px 24px;
}

.content-prose li,
.article-prose li,
.about-prose li,
.privacy-prose li {
  margin-bottom: 8px;
  line-height: 1.7;
  color: var(--text-main);
}

.content-prose a,
.article-prose a,
.about-prose a,
.privacy-prose a {
  color: var(--green);
  text-decoration: underline;
  text-decoration-color: rgba(0, 255, 65, 0.4);
  transition: color var(--transition);
}

.content-prose a:hover,
.article-prose a:hover,
.about-prose a:hover,
.privacy-prose a:hover {
  color: var(--mint);
}

.content-prose strong,
.article-prose strong,
.about-prose strong,
.privacy-prose strong {
  font-weight: 600;
  color: var(--mint);
}

.content-prose blockquote,
.article-prose blockquote,
.about-prose blockquote,
.privacy-prose blockquote {
  border-left: 3px solid var(--green);
  padding: 16px 20px;
  margin: 24px 0;
  background: rgba(0, 255, 65, 0.05);
  color: var(--text-muted);
  font-style: italic;
}

/* ===== h2 + p.subtitle（结构抽签必需） ===== */
.subtitle,
p.subtitle,
p.subhead,
p.desc,
p.lead {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-top: 4px;
  margin-bottom: 0;
  line-height: 1.6;
}

/* ===== 页脚（结构抽签：footer 只放 p + small） ===== */
.site-footer {
  border-top: 1px solid rgba(153, 255, 204, 0.1);
  padding: 32px 24px;
  text-align: center;
  background: rgba(0, 20, 45, 0.6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.site-footer p {
  margin: 0;
  color: var(--text-dim);
}

.site-footer small {
  font-size: 0.825rem;
  color: var(--text-dim);
}

.site-footer small a {
  color: var(--text-muted);
  padding: 4px 8px;
  display: inline-block;
  min-height: 40px;
  line-height: 32px;
}

.site-footer small a:hover {
  color: var(--mint);
}

/* ===== 动效：Stagger List ===== */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.cards-grid .child-card,
.quick-links-grid .quick-link-block,
.related-list li,
.about-info-list li {
  animation: fade-up 0.5s ease both;
}

.cards-grid .child-card:nth-child(1)  { animation-delay: 0.05s; }
.cards-grid .child-card:nth-child(2)  { animation-delay: 0.12s; }
.cards-grid .child-card:nth-child(3)  { animation-delay: 0.19s; }
.cards-grid .child-card:nth-child(4)  { animation-delay: 0.26s; }
.cards-grid .child-card:nth-child(5)  { animation-delay: 0.33s; }
.cards-grid .child-card:nth-child(6)  { animation-delay: 0.40s; }

.quick-links-grid .quick-link-block:nth-child(1) { animation-delay: 0.05s; }
.quick-links-grid .quick-link-block:nth-child(2) { animation-delay: 0.12s; }
.quick-links-grid .quick-link-block:nth-child(3) { animation-delay: 0.19s; }
.quick-links-grid .quick-link-block:nth-child(4) { animation-delay: 0.26s; }
.quick-links-grid .quick-link-block:nth-child(5) { animation-delay: 0.33s; }
.quick-links-grid .quick-link-block:nth-child(6) { animation-delay: 0.40s; }

.related-list li:nth-child(1) { animation-delay: 0.05s; }
.related-list li:nth-child(2) { animation-delay: 0.12s; }
.related-list li:nth-child(3) { animation-delay: 0.19s; }
.related-list li:nth-child(4) { animation-delay: 0.26s; }
.related-list li:nth-child(5) { animation-delay: 0.33s; }

@media (prefers-reduced-motion: reduce) {
  .cards-grid .child-card,
  .quick-links-grid .quick-link-block,
  .related-list li,
  .about-info-list li {
    animation: none;
  }
}

/* ===== 移动端响应式 ===== */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .top-bar-cta {
    display: none;
  }

  .site-nav-aside {
    width: 100%;
    max-width: 320px;
  }

  .hero-section {
    padding: 60px 20px 40px;
    min-height: 100vh;
  }

  .hero-text {
    margin-left: 0;
    max-width: 100%;
  }

  .hero-media {
    right: -80px;
    bottom: -40px;
    width: 70vw;
    opacity: 0.1;
  }

  .hero-h1 {
    font-size: 1.75rem;
  }

  .article-layout-wrap,
  .about-layout-wrap,
  .privacy-layout-wrap {
    grid-template-columns: 1fr;
    padding: 32px 16px 60px;
  }

  .related-aside,
  .about-aside,
  .privacy-aside {
    position: static;
  }

  .home-main {
    padding: 40px 16px 60px;
  }

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

  .quick-links-grid {
    grid-template-columns: 1fr;
  }

  .article-hero-img {
    height: 220px;
  }

  .top-bar-inner {
    padding: 0 16px;
  }
}

@media (max-width: 480px) {
  .brand-name {
    font-size: 0.9rem;
  }

  .article-h1,
  .about-h1,
  .privacy-h1 {
    font-size: 1.4rem;
  }

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

/* ===== 覆盖导航遮罩 ===== */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 10, 30, 0.7);
  z-index: 89;
  backdrop-filter: blur(2px);
}

.nav-overlay.is-active {
  display: block;
}