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

/* ===== 基础变量 ===== */
:root {
  --mint: #b4fde1;
  --blue: #add8e6;
  --dark: #172620;
  --mint-dark: #7ee8c0;
  --blue-dark: #7ab8cc;
  --mint-light: #d8fff2;
  --blue-light: #d4eef7;
  --white: #fafffe;
  --gray: #e8f0ed;
  --text: #172620;
  --text-muted: #456458;
  --radius-sm: 14px;
  --radius: 20px;
  --radius-lg: 28px;
  --border: 3px solid var(--dark);
  --shadow-clay: 4px 4px 0px var(--dark), inset -2px -2px 8px rgba(23,38,32,0.12);
  --shadow-clay-hover: 6px 6px 0px var(--dark), inset -2px -2px 8px rgba(23,38,32,0.15);
  --shadow-sm: 2px 2px 0px var(--dark);
  --font-head: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --ease-clay: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--dark); text-decoration: none; }
a:hover { text-decoration: underline; }
ul { list-style: none; }

/* ===== 公共 Clay 卡片 ===== */
.clay-card {
  background: var(--mint-light);
  border: var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-clay);
  padding: 1.25rem 1.5rem;
  transition: box-shadow 200ms ease-out, transform 200ms ease-out;
}
.clay-card:hover {
  box-shadow: var(--shadow-clay-hover);
  transform: translateY(-2px);
}

/* ===== 按钮 ===== */
.btn-clay {
  display: inline-block;
  background: var(--mint);
  border: var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-clay);
  padding: 0.65rem 1.4rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--dark);
  cursor: pointer;
  transition: box-shadow 200ms ease-out, transform 200ms var(--ease-clay);
  min-height: 44px;
  line-height: 1.4;
  white-space: nowrap;
}
.btn-clay:hover {
  box-shadow: var(--shadow-clay-hover);
  transform: translateY(-2px) scale(1.02);
  text-decoration: none;
}
.btn-clay:active {
  box-shadow: var(--shadow-sm);
  transform: translateY(1px) scale(0.98);
}
.btn-clay--primary {
  background: var(--mint);
}
.btn-clay--sm {
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
  min-height: 36px;
}

/* ===== 徽章 ===== */
.hero-badge {
  display: inline-block;
  border: 2px solid var(--dark);
  border-radius: 100px;
  padding: 0.3rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
}
.badge-mint { background: var(--mint); }
.badge-blue { background: var(--blue); }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 3px solid var(--dark);
  box-shadow: 0 3px 0 var(--mint);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  text-decoration: none;
  flex-shrink: 0;
}
.logo-img { width: 36px; height: 36px; border-radius: 8px; }
.brand-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 180px;
}

/* ===== 导航：header > nav > p > a ===== */
.main-nav {
  flex: 1;
  overflow: hidden;
}
.main-nav p {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.25rem;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.main-nav p::-webkit-scrollbar { display: none; }
.main-nav p a {
  display: inline-block;
  padding: 0.45rem 0.7rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--dark);
  white-space: nowrap;
  min-height: 40px;
  line-height: 1.2;
  display: flex;
  align-items: center;
  transition: background 150ms ease-out, box-shadow 150ms ease-out;
}
.main-nav p a:hover {
  background: var(--mint);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

/* ===== 汉堡 ===== */
.hamburger {
  background: var(--blue);
  border: var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  width: 44px;
  height: 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  flex-shrink: 0;
  transition: transform 200ms var(--ease-clay);
}
.hamburger:hover { transform: scale(1.08); }
.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: transform 200ms ease-out, opacity 200ms ease-out;
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== 全屏菜单 ===== */
.fullscreen-menu {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--mint-light);
  border: 4px solid var(--dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 250ms ease-out;
}
.fullscreen-menu.is-open {
  opacity: 1;
  pointer-events: all;
}
.fullscreen-menu__close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: var(--blue);
  border: var(--border);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 200ms var(--ease-clay);
  display: flex;
  align-items: center;
  justify-content: center;
}
.fullscreen-menu__close:hover { transform: scale(1.12) rotate(90deg); }
.fullscreen-menu__nav p {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}
.fullscreen-menu__nav p a {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--dark);
  padding: 0.5rem 2rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  min-height: 52px;
  display: flex;
  align-items: center;
  transition: background 150ms ease-out, border-color 150ms ease-out, transform 200ms var(--ease-clay);
}
.fullscreen-menu__nav p a:hover {
  background: var(--mint);
  border-color: var(--dark);
  transform: scale(1.04);
  text-decoration: none;
}

/* ===== 粘性锚点条 ===== */
.sticky-anchor {
  position: sticky;
  top: 64px;
  z-index: 90;
  background: var(--blue-light);
  border-bottom: 2px solid var(--dark);
}
.anchor-nav p {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.4rem 1.5rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: none;
}
.anchor-nav p::-webkit-scrollbar { display: none; }
.anchor-nav p a {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.8rem;
  min-height: 36px;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 100px;
  border: 2px solid var(--dark);
  white-space: nowrap;
  background: var(--white);
  transition: background 150ms ease-out;
}
.anchor-nav p a:hover { background: var(--blue); text-decoration: none; }

/* ===== Hero（首页） ===== */
.hero-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 1.5rem 2.5rem;
  min-height: 45vh;
  display: grid;
  grid-template-columns: 1fr 280px;
  grid-template-rows: auto auto auto auto;
  gap: 1.25rem;
  align-items: start;
}
.hero-badge-wrap {
  grid-column: 1 / 2;
  grid-row: 1;
  margin: 0;
}
.hero-title {
  grid-column: 1 / 2;
  grid-row: 2;
  font-family: var(--font-head);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--dark);
}
.subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-top: 0.25rem;
}
.hero-sub {
  grid-column: 1 / 2;
  grid-row: 3;
}
.hero-actions {
  grid-column: 1 / 2;
  grid-row: 4;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}
.hero-aside {
  grid-column: 2 / 3;
  grid-row: 1 / 5;
  align-self: start;
}

/* ===== 首页版块 ===== */
.categories-section,
.articles-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}
.categories-section h2,
.articles-section h2 {
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  color: var(--dark);
  margin-bottom: 0.25rem;
}
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}
.cat-card {
  background: linear-gradient(135deg, var(--mint-light) 0%, var(--blue-light) 100%);
  position: relative;
}
.cat-card__badge {
  display: inline-block;
  background: var(--dark);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  margin-bottom: 0.75rem;
}
.cat-card h3 { font-family: var(--font-head); font-size: 1.15rem; margin-bottom: 0.5rem; }
.cat-card h3 a { color: var(--dark); }
.cat-card h3 a:hover { text-decoration: underline; }
.cat-card__desc { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 1rem; }

/* ===== 文章列表 ===== */
.articles-section {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 2rem;
  align-items: start;
}
.articles-section h2 { grid-column: 1; }
.articles-section .subtitle { grid-column: 1; }
.articles-section .page-content-area { grid-column: 1; }
.articles-section .post-list { grid-column: 1; }
.articles-section > .btn-clay { grid-column: 1; }
.section-aside { grid-column: 2; grid-row: 1 / 10; align-self: start; }

.post-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
}
.post-list--row {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}
.post-list--grid {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.post-list li { list-style: none; }
.post-card {
  background: var(--white);
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.post-card__meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}
.post-card h3 { font-family: var(--font-head); font-size: 1.05rem; line-height: 1.4; }
.post-card h3 a { color: var(--dark); }
.post-card h3 a:hover { text-decoration: underline; }
.post-card p { font-size: 0.9rem; color: var(--text-muted); flex: 1; }
.post-card__link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--dark);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-top: auto;
  padding-top: 0.5rem;
}
.post-card__link:hover { text-decoration: underline; }

.card-thumb-wrap {
  margin: -1.25rem -1.5rem 1rem;
  overflow: hidden;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  border-bottom: 2px solid var(--dark);
}
.card-thumb { width: 100%; height: 160px; object-fit: cover; }

/* ===== 侧边栏小部件 ===== */
.aside-widget { }
.aside-widget__label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}
.aside-quick-links li { margin-bottom: 0.4rem; }
.aside-quick-links a {
  display: block;
  padding: 0.35rem 0.5rem;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--dark);
  transition: background 150ms ease-out;
  min-height: 36px;
  line-height: 1.3;
  display: flex;
  align-items: center;
}
.aside-quick-links a:hover { background: var(--mint); text-decoration: none; }
.aside-related li { margin-bottom: 0.4rem; }
.aside-related a {
  font-size: 0.88rem;
  color: var(--dark);
  display: block;
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--mint-dark);
  line-height: 1.4;
}
.aside-related a:hover { text-decoration: underline; }

/* ===== 分类页 ===== */
.cat-hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 2rem;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 1.5rem;
  align-items: start;
}
.cat-hero__deco { grid-column: 1; margin: 0; }
.cat-hero h1 {
  grid-column: 1;
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.2;
  color: var(--dark);
}
.cat-hero .subtitle { grid-column: 1; }
.cat-hero__aside { grid-column: 2; grid-row: 1 / 5; }

.cat-content-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 2rem;
  align-items: start;
}
.cat-aside { grid-column: 1; grid-row: 1; align-self: start; }
.cat-aside ul li { margin-bottom: 0.4rem; }
.cat-aside ul a {
  display: flex;
  align-items: center;
  padding: 0.4rem 0.5rem;
  border-radius: 8px;
  font-size: 0.9rem;
  min-height: 40px;
  color: var(--dark);
  transition: background 150ms ease-out;
}
.cat-aside ul a:hover { background: var(--blue); text-decoration: none; }
.cat-main { grid-column: 2; }
.cat-main h2 { font-family: var(--font-head); font-size: 1.8rem; margin-bottom: 0.25rem; }

/* ===== 文章页 ===== */
.article-main { max-width: 1200px; margin: 0 auto; }
.article-header-section {
  padding: 3rem 1.5rem 1.5rem;
  border-bottom: 2px solid var(--mint);
}
.article-meta-fig { display: flex; align-items: center; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; }
.article-meta-fig a { color: var(--dark); }
.article-date {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--blue-light);
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  border: 1.5px solid var(--dark);
}
.article-header-section h1 {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.25;
  color: var(--dark);
  margin-bottom: 0.5rem;
}
.article-desc { color: var(--text-muted); }
.article-updated { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.5rem; }

.article-body-section {
  padding: 2rem 1.5rem;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 2rem;
  align-items: start;
}
.article-hero-fig {
  grid-column: 1 / 3;
  margin-bottom: 0.5rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: var(--border);
  box-shadow: var(--shadow-clay);
}
.article-hero-fig--empty { display: none; }
.article-hero-img { width: 100%; max-height: 360px; object-fit: cover; }
.article-content-wrap {
  grid-column: 1 / 3;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 2rem;
  align-items: start;
}
.article-content { grid-column: 1; }
.article-aside { grid-column: 2; align-self: start; }

/* 正文内容样式 */
.page-content-area h1,
.page-content-area h2,
.page-content-area h3,
.page-content-area h4 {
  font-family: var(--font-head);
  color: var(--dark);
  margin: 1.75rem 0 0.6rem;
  line-height: 1.3;
}
.page-content-area h2 { font-size: 1.5rem; }
.page-content-area h3 { font-size: 1.2rem; }
.page-content-area p { margin-bottom: 1rem; }
.page-content-area ul, .page-content-area ol { padding-left: 1.4rem; margin-bottom: 1rem; }
.page-content-area li { margin-bottom: 0.4rem; }
.page-content-area strong { font-weight: 700; }
.page-content-area a { color: var(--dark); text-decoration: underline; text-underline-offset: 3px; }
.page-content-area blockquote {
  border-left: 4px solid var(--mint-dark);
  background: var(--mint-light);
  padding: 0.8rem 1.2rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.25rem 0;
  font-style: italic;
}
.page-content-area img {
  border-radius: var(--radius);
  border: var(--border);
  box-shadow: var(--shadow-clay);
  margin: 1.25rem 0;
}
.page-content-area table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: var(--border);
}
.page-content-area th, .page-content-area td {
  padding: 0.6rem 0.9rem;
  border-bottom: 2px solid var(--mint);
  text-align: left;
}
.page-content-area th { background: var(--mint); font-weight: 700; }

.article-related-section {
  padding: 2rem 1.5rem 3rem;
  border-top: 2px solid var(--mint);
}
.article-related-section h2 { font-family: var(--font-head); font-size: 1.6rem; margin-bottom: 0.25rem; }

/* ===== 关于页 ===== */
.about-main { max-width: 1200px; margin: 0 auto; }
.about-hero {
  padding: 3.5rem 1.5rem 2rem;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 1.5rem;
  align-items: start;
}
.about-hero__deco { grid-column: 1; margin: 0; }
.about-hero h1 {
  grid-column: 1;
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.25;
  color: var(--dark);
}
.about-hero .subtitle { grid-column: 1; }
.about-hero__aside { grid-column: 2; grid-row: 1 / 5; }

.about-content-section {
  padding: 2rem 1.5rem;
  border-top: 2px solid var(--mint);
}
.about-brand-fig {
  background: linear-gradient(135deg, var(--mint) 0%, var(--blue) 100%);
  border-radius: var(--radius-lg);
  border: var(--border);
  box-shadow: var(--shadow-clay);
  padding: 2rem 2rem;
  margin-bottom: 2rem;
  text-align: center;
}
.about-brand-name {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.2;
}
.about-brand-tagline { font-size: 1rem; color: var(--text-muted); margin-top: 0.5rem; }
.about-content-wrap {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 2rem;
  align-items: start;
}
.about-content { grid-column: 1; }
.about-aside { grid-column: 2; }

.about-values-section {
  padding: 2rem 1.5rem 3rem;
  border-top: 2px solid var(--mint);
}
.about-values-section h2 { font-family: var(--font-head); font-size: 1.8rem; margin-bottom: 0.25rem; }
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}
.value-item { background: linear-gradient(135deg, var(--blue-light) 0%, var(--mint-light) 100%); }
.value-item__num {
  font-family: var(--font-head);
  font-size: 2rem;
  font-weight: 700;
  color: var(--mint-dark);
  margin-bottom: 0.5rem;
}
.value-item h3 { font-family: var(--font-head); font-size: 1.1rem; margin-bottom: 0.5rem; }
.values-aside {
  float: right;
  width: 240px;
  margin: 0 0 1.5rem 2rem;
}

/* ===== 隐私页 ===== */
.privacy-main { max-width: 1200px; margin: 0 auto; }
.privacy-header-section {
  padding: 3.5rem 1.5rem 2rem;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 1.5rem;
  align-items: start;
}
.privacy-deco { grid-column: 1; margin: 0; }
.privacy-header-section h1 {
  grid-column: 1;
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.25;
  color: var(--dark);
}
.privacy-header-section .subtitle { grid-column: 1; }
.privacy-aside { grid-column: 2; grid-row: 1 / 5; }

.privacy-content-section {
  padding: 2rem 1.5rem 3rem;
  border-top: 2px solid var(--mint);
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 2rem;
  align-items: start;
}
.privacy-content { grid-column: 1; }
.privacy-content-aside { grid-column: 2; align-self: start; }

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: var(--white);
  padding: 0;
  margin-top: 3rem;
  border-top: 4px solid var(--mint);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.5rem 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}
.footer-brand__name {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--mint);
  line-height: 1.1;
  margin-bottom: 0.75rem;
}
.footer-brand address { font-style: normal; }
.footer-brand address p { font-size: 0.9rem; color: var(--blue-light); line-height: 1.6; }
.footer-links ul li { margin-bottom: 0.35rem; }
.footer-links ul a {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0;
  min-height: 40px;
  font-size: 0.92rem;
  color: var(--blue-light);
  border-bottom: 1px solid rgba(180,253,225,0.15);
  transition: color 150ms ease-out;
  width: 100%;
}
.footer-links ul a:hover { color: var(--mint); text-decoration: none; }
.footer-bottom {
  border-top: 2px solid rgba(180,253,225,0.2);
  padding: 1rem 1.5rem;
  text-align: center;
  max-width: 1200px;
  margin: 0 auto;
}
.footer-bottom p { font-size: 0.82rem; color: var(--blue-light); }

/* ===== 动效 ===== */
@media (prefers-reduced-motion: no-preference) {
  .post-list li {
    animation: stagger-in 400ms var(--ease-clay) both;
  }
  .post-list li:nth-child(1) { animation-delay: 50ms; }
  .post-list li:nth-child(2) { animation-delay: 120ms; }
  .post-list li:nth-child(3) { animation-delay: 190ms; }
  .post-list li:nth-child(4) { animation-delay: 260ms; }
  .post-list li:nth-child(5) { animation-delay: 330ms; }
  .post-list li:nth-child(6) { animation-delay: 400ms; }

  @keyframes stagger-in {
    from { opacity: 0; transform: translateY(18px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
  }

  .cat-card, .value-item {
    animation: stagger-in 350ms var(--ease-clay) both;
  }
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .hero-section {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 2.5rem 1.25rem 2rem;
  }
  .hero-aside { grid-column: 1; grid-row: auto; }
  .cat-hero { grid-template-columns: 1fr; padding: 2.5rem 1.25rem 1.5rem; }
  .cat-hero__aside { grid-column: 1; grid-row: auto; }
  .cat-content-section { grid-template-columns: 1fr; padding: 1.5rem 1.25rem 2.5rem; }
  .cat-aside { grid-column: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
  .cat-main { grid-column: 1; }
  .article-body-section { grid-template-columns: 1fr; padding: 1.5rem 1.25rem; }
  .article-hero-fig { grid-column: 1; }
  .article-content-wrap { grid-template-columns: 1fr; }
  .article-content { grid-column: 1; }
  .article-aside { grid-column: 1; grid-row: auto; }
  .articles-section { grid-template-columns: 1fr; }
  .section-aside { grid-column: 1; grid-row: auto; order: -1; }
  .about-hero { grid-template-columns: 1fr; }
  .about-hero__aside { grid-column: 1; grid-row: auto; }
  .about-content-wrap { grid-template-columns: 1fr; }
  .about-content { grid-column: 1; }
  .about-aside { grid-column: 1; }
  .privacy-header-section { grid-template-columns: 1fr; }
  .privacy-aside { grid-column: 1; grid-row: auto; }
  .privacy-content-section { grid-template-columns: 1fr; }
  .privacy-content { grid-column: 1; }
  .privacy-content-aside { grid-column: 1; }
  .values-aside { float: none; width: auto; margin: 0 0 1.5rem; }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 600px) {
  .header-inner { padding: 0 1rem; gap: 0.75rem; }
  .brand-name { max-width: 120px; font-size: 0.95rem; }
  .main-nav { display: none; }
  .hero-title { font-size: 1.75rem; }
  .cat-grid { grid-template-columns: 1fr; }
  .post-list { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .footer-inner { padding: 2rem 1rem; }
  .article-header-section { padding: 2rem 1rem 1.25rem; }
  .about-hero { padding: 2.5rem 1rem 1.5rem; }
  .categories-section, .articles-section { padding: 2rem 1rem; }
}

@media (max-width: 375px) {
  body { font-size: 16px; }
  .hero-section { padding: 2rem 1rem 1.5rem; }
  .btn-clay { font-size: 0.9rem; padding: 0.6rem 1rem; }
}