@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@700&display=swap');

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

:root {
  --black: #000;
  --white: #fff;
  --accent: #000;
  --border: 3px solid #000;
  --font: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --nav-w: 260px;
  --aside-w: 220px;
  --ticker-h: 40px;
}

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

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--black);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

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

/* ===== 顶部公告条 ===== */
.top-ticker {
  position: fixed;
  top: 0;
  left: var(--nav-w);
  right: 0;
  height: var(--ticker-h);
  background: var(--black);
  color: var(--white);
  display: flex;
  align-items: center;
  padding: 0 2rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  z-index: 100;
  overflow: hidden;
}

.top-ticker span {
  white-space: nowrap;
  animation: ticker-scroll 20s linear infinite;
}

@keyframes ticker-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ===== 侧边导航 aside > nav > ul > li > a ===== */
.site-aside {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--nav-w);
  height: 100vh;
  background: var(--white);
  border-right: var(--border);
  z-index: 200;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.site-aside > nav { flex: 1; }

.site-aside > nav > ul {
  display: flex;
  flex-direction: column;
  padding: 0;
}

.site-aside > nav > ul > li { border-bottom: 2px solid var(--black); }

.site-aside > nav > ul > li > a {
  display: block;
  padding: 14px 20px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.3;
  color: var(--black);
  transition: background 0.15s, color 0.15s;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.site-aside > nav > ul > li > a:hover,
.site-aside > nav > ul > li > a[aria-current="page"] {
  background: var(--black);
  color: var(--white);
  text-decoration: none;
}

.nav-brand { border-bottom: 3px solid var(--black) !important; }

.nav-brand a {
  padding: 20px !important;
  font-size: 1.4rem !important;
  font-weight: 900 !important;
  letter-spacing: -0.03em;
  justify-content: flex-start !important;
}

.logo-text-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--black);
  color: var(--white);
  font-size: 1.4rem;
  font-weight: 900;
}

/* ===== 页面主体 ===== */
.page-wrap {
  margin-left: var(--nav-w);
  padding-top: var(--ticker-h);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Hero：首页 ===== */
.hero-block {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: stretch;
  overflow: hidden;
  border-bottom: var(--border);
}

.hero-text {
  flex: 0 0 55%;
  padding: 6rem 4rem 6rem 5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
  z-index: 2;
}

.hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-left: 4px solid var(--black);
  padding-left: 12px;
}

.hero-block h1 {
  font-size: clamp(2.4rem, 6vw, 6rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.0;
}

.hero-sub {
  font-size: 1.1rem;
  line-height: 1.6;
  max-width: 480px;
  font-weight: 700;
}

.hero-cta {
  display: inline-block;
  background: var(--black);
  color: var(--white);
  padding: 14px 32px;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 3px solid var(--black);
  align-self: flex-start;
  transition: background 0.15s, color 0.15s;
  min-height: 44px;
}

.hero-cta:hover { background: var(--white); color: var(--black); text-decoration: none; }

.hero-media {
  flex: 0 0 45%;
  background: #111;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-media--empty { background: var(--black); }

.hero-big-text {
  font-size: clamp(6rem, 20vw, 18rem);
  font-weight: 900;
  color: rgba(255,255,255,0.08);
  letter-spacing: -0.05em;
  line-height: 1;
  user-select: none;
}

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

.hero-slash {
  position: absolute;
  left: 52%;
  top: -10%;
  width: 120px;
  height: 130%;
  background: var(--white);
  transform: skewX(-8deg);
  z-index: 3;
}

/* ===== Hero：栏目页 ===== */
.cat-hero {
  position: relative;
  padding: 5rem 5rem 4rem;
  border-bottom: var(--border);
  background: var(--black);
  color: var(--white);
  overflow: hidden;
  min-height: 35vh;
  display: flex;
  align-items: flex-end;
}

.cat-hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 700px;
}

.cat-hero h1 {
  font-size: clamp(2rem, 5vw, 4.5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.cat-desc {
  font-size: 1rem;
  line-height: 1.6;
  opacity: 0.8;
  font-weight: 700;
  max-width: 560px;
}

.cat-slash {
  position: absolute;
  right: -60px;
  top: -20%;
  width: 220px;
  height: 160%;
  background: rgba(255,255,255,0.05);
  transform: skewX(-10deg);
  z-index: 1;
}

/* ===== Hero：文章页 ===== */
.art-header-block {
  display: flex;
  align-items: stretch;
  border-bottom: var(--border);
  min-height: 30vh;
}

.art-header-inner {
  flex: 1;
  padding: 4rem 5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1rem;
}

.art-header-inner h1 {
  font-size: clamp(1.8rem, 4vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.art-header-img {
  flex: 0 0 38%;
  overflow: hidden;
  border-left: var(--border);
}

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

.art-meta {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.art-meta time {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  opacity: 0.6;
}

/* ===== Hero：about/privacy ===== */
.about-hero, .privacy-hero {
  position: relative;
  padding: 5rem 5rem 4rem;
  border-bottom: var(--border);
  background: var(--black);
  color: var(--white);
  overflow: hidden;
  min-height: 30vh;
  display: flex;
  align-items: flex-end;
}

.about-hero-inner, .privacy-hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.about-hero h1, .privacy-hero h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.about-slash {
  position: absolute;
  right: 80px;
  top: -20%;
  width: 180px;
  height: 160%;
  background: rgba(255,255,255,0.06);
  transform: skewX(-10deg);
  z-index: 1;
}

/* ===== Hero：default ===== */
.default-hero {
  padding: 4rem 5rem;
  border-bottom: var(--border);
  background: var(--black);
  color: var(--white);
}

.default-hero h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  opacity: 0.7;
  display: inline-block;
}

.breadcrumb:hover { opacity: 1; text-decoration: none; }

/* ===== eyebrow ===== */
.hero-eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-left: 4px solid currentColor;
  padding-left: 10px;
  opacity: 0.7;
}

/* ===== 内容布局 main > div.wrap > section > article ===== */
.content-layout {
  flex: 1;
  display: flex;
  align-items: flex-start;
}

.content-layout > main { flex: 1; min-width: 0; }

.wrap { padding: 3rem 4rem 3rem 5rem; }

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

/* 内容侧边 aside（右侧） */
.content-aside {
  flex: 0 0 var(--aside-w);
  width: var(--aside-w);
  border-left: var(--border);
  padding: 2rem 1.5rem;
  position: sticky;
  top: var(--ticker-h);
  max-height: calc(100vh - var(--ticker-h));
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.content-aside > nav > ul { display: flex; flex-direction: column; gap: 0; }

.content-aside > nav > ul > li { border-bottom: 1px solid #ddd; }

.content-aside > nav > ul > li > a {
  display: block;
  padding: 10px 0;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.3;
  min-height: 40px;
  display: flex;
  align-items: center;
}

.content-aside > nav > ul > li > a:hover { text-decoration: underline; }

.content-aside h3 {
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding-bottom: 8px;
  border-bottom: 3px solid var(--black);
  margin-bottom: 4px;
}

/* 首页独立 aside（非侧栏布局，在 footer 前） */
.content-aside--home {
  position: static;
  max-height: none;
  flex: none;
  width: 100%;
  border-left: none;
  border-top: var(--border);
  flex-direction: row;
  flex-wrap: wrap;
  gap: 2rem;
  padding: 2rem 5rem;
}

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

.prose h2 { font-size: 1.5rem; font-weight: 900; letter-spacing: -0.03em; margin: 2.5rem 0 0.5rem; }
.prose h3 { font-size: 1.2rem; font-weight: 900; margin: 2rem 0 0.5rem; }
.prose h4 { font-size: 1rem; font-weight: 700; margin: 1.5rem 0 0.4rem; }
.prose p { margin: 0 0 1.2rem; }
.prose ul, .prose ol { margin: 0 0 1.2rem 1.5rem; list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin-bottom: 0.4rem; }
.prose strong { font-weight: 900; }
.prose a { text-decoration: underline; }
.prose a:hover { opacity: 0.7; }
.prose blockquote {
  border-left: 4px solid var(--black);
  padding: 0.5rem 1rem;
  margin: 1.5rem 0;
  background: #f5f5f5;
  font-weight: 700;
}
.prose table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; }
.prose th, .prose td { border: 2px solid var(--black); padding: 8px 12px; text-align: left; }
.prose th { background: var(--black); color: var(--white); font-weight: 900; }
.prose hr { border: none; border-top: 2px solid var(--black); margin: 2rem 0; }
.prose code { background: #f0f0f0; padding: 2px 6px; font-family: monospace; font-size: 0.9em; }
.prose pre { background: var(--black); color: var(--white); padding: 1.5rem; overflow-x: auto; margin: 1.5rem 0; }
.prose pre code { background: none; color: inherit; }

/* ===== hr 装饰（h2/h3 后紧跟） ===== */
h2 + hr, h3 + hr {
  border: none;
  border-top: 3px solid var(--black);
  margin: 0.5rem 0 1.5rem;
}

hr { border: none; border-top: 2px solid var(--black); margin: 1.5rem 0; }

/* ===== 功能卡片区（首页） ===== */
.section-features { margin-bottom: 3rem; }
.section-features h2 { font-size: 1.6rem; font-weight: 900; letter-spacing: -0.03em; margin-bottom: 0; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: var(--border);
  margin-top: 1.5rem;
}

.feature-card { border: var(--border); }

.feature-card > a {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 2rem;
  height: 100%;
  transition: background 0.15s, color 0.15s;
  position: relative;
}

.feature-card > a:hover { background: var(--black); color: var(--white); text-decoration: none; }

.card-num {
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 1;
  opacity: 0.15;
}

.feature-card strong { font-size: 1rem; font-weight: 900; line-height: 1.3; }
.feature-card p { font-size: 0.82rem; line-height: 1.5; opacity: 0.7; flex: 1; }

.card-arrow {
  font-size: 1.5rem;
  font-weight: 900;
  align-self: flex-end;
  transition: transform 0.15s;
}

.feature-card > a:hover .card-arrow { transform: translateX(6px); }

/* ===== 最新文章列表 ===== */
.section-recent { margin-bottom: 3rem; }
.section-recent h2 { font-size: 1.6rem; font-weight: 900; letter-spacing: -0.03em; margin-bottom: 0; }

.article-list { margin-top: 1.5rem; border-top: var(--border); }

.article-row { border-bottom: 2px solid #ddd; }

.article-row > a {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 0;
  transition: background 0.12s;
  min-height: 52px;
}

.article-row > a:hover { text-decoration: none; background: #f7f7f7; padding-left: 0.5rem; }

.art-num {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: -0.05em;
  color: #ccc;
  flex-shrink: 0;
  width: 3rem;
  text-align: right;
}

.art-title { font-size: 0.9rem; font-weight: 700; flex: 1; line-height: 1.4; }

.art-date {
  font-size: 0.75rem;
  font-weight: 700;
  opacity: 0.5;
  letter-spacing: 0.03em;
  flex-shrink: 0;
}

/* ===== 栏目子页列表 ol > li > a + small ===== */
.section-children { margin-bottom: 3rem; }
.section-children h2 { font-size: 1.4rem; font-weight: 900; letter-spacing: -0.03em; margin-bottom: 0; }

.child-list { margin-top: 1.5rem; border-top: var(--border); }

.child-item { border-bottom: 2px solid #ddd; }

.child-item > a {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.2rem 0;
  transition: background 0.12s;
  min-height: 56px;
  text-decoration: none;
}

.child-item > a:hover { background: #f7f7f7; padding-left: 0.5rem; }

.child-num {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.05em;
  color: #ccc;
  flex-shrink: 0;
  width: 3rem;
  text-align: right;
}

.child-info { flex: 1; }
.child-info strong { display: block; font-size: 0.95rem; font-weight: 900; line-height: 1.3; }
.child-info small { font-size: 0.78rem; line-height: 1.5; opacity: 0.6; display: block; margin-top: 2px; }

.child-item time {
  font-size: 0.72rem;
  font-weight: 700;
  opacity: 0.4;
  letter-spacing: 0.03em;
  flex-shrink: 0;
}

/* ===== 相关文章 ===== */
.section-related { margin-bottom: 3rem; }
.section-related h2 { font-size: 1.2rem; font-weight: 900; letter-spacing: -0.02em; margin-bottom: 0; }

.related-list { margin-top: 1rem; border-top: 2px solid var(--black); }

.related-list > li { border-bottom: 1px solid #ddd; }

.related-list > li > a {
  display: block;
  padding: 0.8rem 0;
  font-size: 0.88rem;
  font-weight: 700;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.related-list > li > a:hover { text-decoration: underline; }

/* ===== about 统计块 ===== */
.about-stats { margin-bottom: 3rem; }
.about-stats h2 { font-size: 1.4rem; font-weight: 900; letter-spacing: -0.03em; margin-bottom: 0; }

.stats-list {
  display: flex;
  gap: 0;
  margin-top: 1.5rem;
  border: var(--border);
}

.stats-list > li {
  flex: 1;
  padding: 2rem 1.5rem;
  border-right: var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.stats-list > li:last-child { border-right: none; }

.stat-num {
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
}

.stat-label { font-size: 0.8rem; font-weight: 700; opacity: 0.6; }

/* ===== 侧栏 CTA ===== */
.aside-cta {
  background: var(--black);
  color: var(--white);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.aside-cta strong { font-size: 0.88rem; font-weight: 900; letter-spacing: 0.05em; }
.aside-cta p { font-size: 0.78rem; line-height: 1.5; opacity: 0.7; }

.aside-cta a {
  display: inline-block;
  background: var(--white);
  color: var(--black);
  padding: 8px 16px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  border: 2px solid var(--white);
  transition: background 0.15s, color 0.15s;
  min-height: 40px;
  align-self: flex-start;
  display: flex;
  align-items: center;
}

.aside-cta a:hover { background: var(--black); color: var(--white); border-color: var(--white); text-decoration: none; }

.aside-parent {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 2px solid var(--black);
}

.aside-parent strong { font-size: 0.7rem; font-weight: 900; letter-spacing: 0.1em; text-transform: uppercase; opacity: 0.5; }
.aside-parent a { font-size: 0.85rem; font-weight: 700; text-decoration: underline; }

/* ===== 隐私页日期 ===== */
.privacy-date {
  font-size: 0.82rem;
  font-weight: 700;
  opacity: 0.6;
  margin-top: 0.5rem;
}

/* ===== footer > section×n ===== */
footer {
  border-top: var(--border);
  background: var(--white);
  margin-top: auto;
}

footer > .footer-brand {
  padding: 3rem 5rem 2rem;
  border-bottom: var(--border);
}

footer > .footer-meta {
  padding: 1.2rem 5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-big {
  font-size: clamp(2rem, 6vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 1;
  display: block;
  color: var(--black);
}

footer > .footer-meta span {
  font-size: 0.78rem;
  font-weight: 700;
  opacity: 0.6;
  letter-spacing: 0.03em;
}

.footer-nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-nav a {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 0 4px;
}

.footer-nav a:hover { text-decoration: underline; }

/* ===== 动效（prefers-reduced-motion 关闭） ===== */
@media (prefers-reduced-motion: no-preference) {
  .feature-card > a { transition: background 0.18s ease, color 0.18s ease; }
  .article-row > a { transition: background 0.14s ease, padding-left 0.14s ease; }
  .child-item > a { transition: background 0.14s ease, padding-left 0.14s ease; }

  .feature-card { opacity: 0; transform: translateY(20px); animation: fade-in-up 0.4s ease forwards; animation-delay: calc(var(--i, 0) * 0.08s); }
  .article-row { opacity: 0; transform: translateX(-12px); animation: fade-in-left 0.35s ease forwards; animation-delay: calc(var(--i, 0) * 0.06s); }
  .child-item { opacity: 0; transform: translateX(-12px); animation: fade-in-left 0.35s ease forwards; animation-delay: calc(var(--i, 0) * 0.07s); }
}

@keyframes fade-in-up {
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fade-in-left {
  to { opacity: 1; transform: translateX(0); }
}

@media (prefers-reduced-motion: reduce) {
  .feature-card, .article-row, .child-item { opacity: 1; transform: none; animation: none; }
  .top-ticker span { animation: none; }
}

/* ===== 响应式：平板 ===== */
@media (max-width: 1024px) {
  :root { --nav-w: 200px; --aside-w: 180px; }
  .wrap { padding: 2rem 2rem 2rem 2.5rem; }
  .hero-text { padding: 4rem 2.5rem 4rem 3rem; }
  footer > .footer-brand { padding: 2rem 2.5rem 1.5rem; }
  footer > .footer-meta { padding: 1rem 2.5rem; }
  .cat-hero, .about-hero, .privacy-hero { padding: 3rem 2.5rem 2.5rem; }
  .art-header-inner { padding: 3rem 2.5rem; }
}

/* ===== 响应式：手机 ===== */
@media (max-width: 768px) {
  :root { --nav-w: 0px; --aside-w: 100%; --ticker-h: 36px; }

  /* 侧边栏变顶部横向 */
  .site-aside {
    position: static;
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: var(--border);
    flex-direction: row;
    overflow-x: auto;
    overflow-y: visible;
  }

  .site-aside > nav { flex: 1; }

  .site-aside > nav > ul {
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
  }

  .site-aside > nav > ul > li {
    border-bottom: none;
    border-right: 2px solid var(--black);
    flex-shrink: 0;
  }

  .site-aside > nav > ul > li > a {
    padding: 12px 16px;
    font-size: 0.78rem;
    white-space: nowrap;
    min-height: 44px;
  }

  .nav-brand a { padding: 12px 16px !important; }

  .top-ticker {
    position: static;
    left: 0;
  }

  .page-wrap {
    margin-left: 0;
    padding-top: 0;
  }

  /* Hero */
  .hero-block {
    flex-direction: column;
    min-height: auto;
  }

  .hero-text {
    flex: none;
    padding: 3rem 1.5rem 2.5rem;
    order: 2;
    gap: 1rem;
  }

  .hero-media {
    flex: none;
    order: 1;
    min-height: 220px;
    width: 100%;
  }

  .hero-slash { display: none; }
  .cat-slash, .about-slash { display: none; }

  .hero-block h1 { font-size: clamp(2rem, 8vw, 3.5rem); }

  .cat-hero { padding: 3rem 1.5rem 2.5rem; min-height: auto; }
  .cat-hero h1 { font-size: clamp(1.8rem, 7vw, 3rem); }

  .about-hero, .privacy-hero { padding: 3rem 1.5rem 2.5rem; min-height: auto; }
  .about-hero h1, .privacy-hero h1 { font-size: clamp(1.8rem, 7vw, 3rem); }

  .default-hero { padding: 3rem 1.5rem; }
  .default-hero h1 { font-size: clamp(1.8rem, 7vw, 3rem); }

  /* 内容 */
  .content-layout { flex-direction: column; }

  .content-aside {
    position: static;
    max-height: none;
    width: 100%;
    flex: none;
    border-left: none;
    border-top: var(--border);
    padding: 1.5rem;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1.5rem;
  }

  .content-aside > nav { flex: 1; min-width: 200px; }

  .wrap { padding: 1.5rem; }

  .art-header-block { flex-direction: column; }
  .art-header-inner { padding: 2rem 1.5rem; }
  .art-header-img { display: none; }

  /* 卡片 */
  .feature-grid { grid-template-columns: 1fr; }

  /* 统计 */
  .stats-list { flex-direction: column; }
  .stats-list > li { border-right: none; border-bottom: var(--border); }
  .stats-list > li:last-child { border-bottom: none; }

  /* 页脚 */
  footer > .footer-brand { padding: 2rem 1.5rem 1.5rem; }
  footer > .footer-meta { padding: 1rem 1.5rem; flex-direction: column; align-items: flex-start; }

  .footer-big { font-size: clamp(2rem, 10vw, 3.5rem); }

  /* 首页侧边 */
  .content-aside--home { padding: 1.5rem; }
}