/*
 * 上海市五子棋协会门户示例
 * 样式组织：设计令牌 → 基础元素 → 公共组件 → 页面 → 响应式 → 辅助功能
 */

:root {
  --color-paper: #f7f2e8;
  --color-paper-deep: #eee5d6;
  --color-footer: #e9dfcf;
  --color-ink: #1c1b18;
  --color-ink-soft: #292722;
  --color-body: #403b33;
  --color-muted: #625a4e;
  --color-subtle: #7d7468;
  --color-wood: #8a5a32;
  --color-wood-dark: #6f4729;
  --color-board: #c69a64;
  --color-line: #d9cdbb;
  --color-white: #fff;
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  --container: 1280px;
  --gutter: 32px;
  --section-space: 72px;
  --radius: 2px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-body);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--color-wood); }
button { font: inherit; }
h1, h2, h3, p, blockquote, dl, dd { margin: 0; }
h1, h2, h3 { color: var(--color-ink); font-family: var(--font-display); font-weight: 600; }
:focus-visible { outline: 2px solid var(--color-wood); outline-offset: 4px; }
.container { width: min(100% - (var(--gutter) * 2), var(--container)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 100; top: 8px; left: 8px; padding: 8px 14px; background: var(--color-white); transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }

/* 顶部信息栏与导航 */
.topbar { background: var(--color-ink); color: #d9d1c3; font-size: 12px; }
.topbar__inner { min-height: 36px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-header { border-bottom: 1px solid var(--color-line); background: var(--color-paper); }
.site-header__inner { min-height: 100px; display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.brand { flex: 0 0 auto; }
.brand img { width: 170px; height: auto; }
.site-nav { display: flex; align-items: center; gap: 32px; font-size: 15px; color: var(--color-ink-soft); }
.site-nav > a:not(.search-link) { position: relative; padding-block: 12px; white-space: nowrap; }
.site-nav > a[aria-current="page"] { color: var(--color-wood); font-weight: 500; }
.site-nav > a[aria-current="page"]::after { content: ""; position: absolute; right: 0; bottom: 3px; left: 0; height: 1px; background: currentColor; }
.search-link { width: 38px; height: 38px; display: grid; place-items: center; flex: 0 0 auto; background: var(--color-ink-soft); color: var(--color-white); border-radius: var(--radius); }
.search-link:hover { color: var(--color-white); background: var(--color-wood-dark); }
.search-link svg { width: 19px; fill: none; stroke: currentColor; stroke-width: 1.7; }
.menu-toggle { display: none; width: 40px; height: 40px; padding: 10px; border: 0; border-radius: var(--radius); background: var(--color-ink-soft); cursor: pointer; }
.menu-toggle span { display: block; width: 18px; height: 1px; margin: 4px auto; background: var(--color-white); }
.text-link { color: var(--color-wood); font-size: 14px; font-weight: 500; }
.eyebrow { color: var(--color-wood); font-size: 12px; font-weight: 500; letter-spacing: .04em; }

/* 首页 */
.hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(400px, .95fr); align-items: center; gap: 64px; padding-block: 64px; }
.hero__content { display: flex; flex-direction: column; align-items: flex-start; gap: 22px; }
.hero h1 { font-size: clamp(34px, 3.2vw, 46px); line-height: 1.4; letter-spacing: .01em; }
.hero__summary { max-width: 560px; color: var(--color-muted); font-size: 16px; line-height: 1.85; }
.board-wrap { min-width: 0; }
.board { width: 100%; height: auto; }
.home-grid { display: grid; grid-template-columns: minmax(0, 2fr) minmax(280px, .85fr); gap: 64px; padding-block: 28px 80px; }
.section-heading { min-height: 58px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--color-line); }
.section-heading h2, .notice-panel h2, .event-panel h2 { font-size: 25px; }
.news-item { padding-block: 25px; border-bottom: 1px solid var(--color-line); }
.news-item h3 { margin-block: 8px; font-size: 22px; line-height: 1.55; }
.news-item > p:last-child { color: var(--color-muted); font-size: 14px; }
.news-meta { color: var(--color-wood); font-size: 12px; }
.sidebar { display: flex; flex-direction: column; gap: 38px; padding-top: 58px; }
.notice-panel { padding: 28px; background: var(--color-paper-deep); }
.notice-panel h2 { margin-bottom: 18px; font-size: 21px; }
.notice-list { margin: 0; padding: 0; list-style: none; counter-reset: notice; }
.notice-list li { counter-increment: notice; display: flex; gap: 12px; padding-block: 10px; font-size: 14px; line-height: 1.65; }
.notice-list li::before { content: counter(notice, decimal-leading-zero); flex: 0 0 auto; color: var(--color-wood); }
.event-panel h2 { margin-bottom: 18px; font-size: 21px; }
.event-panel h3 { margin-block: 8px 12px; font-size: 18px; }
.event-date { color: var(--color-wood); font-size: 13px; font-weight: 500; }
.event-panel .text-link { color: var(--color-muted); font-size: 13px; }
.quote-band { padding: 58px var(--gutter); background: var(--color-ink-soft); color: #f4ebdd; text-align: center; }
.quote-band blockquote { font-family: var(--font-display); font-size: 30px; line-height: 1.5; }
.quote-band p { margin-top: 12px; color: #bfb4a4; font-size: 11px; letter-spacing: .04em; }

/* 页脚 */
.site-footer { padding-block: 52px; background: var(--color-footer); }
.site-footer__grid { display: grid; grid-template-columns: 190px minmax(0, 1fr) 180px; align-items: start; gap: 56px; }
.footer-logo { width: 170px; height: auto; }
.site-footer h2 { margin-bottom: 10px; font-family: var(--font-body); font-size: 15px; font-weight: 500; }
.site-footer p { color: var(--color-muted); font-size: 13px; }
.site-footer small { display: block; margin-top: 14px; color: var(--color-subtle); font-size: 11px; }
.footer-nav { display: flex; flex-direction: column; align-items: flex-start; gap: 5px; font-size: 13px; }

/* 新闻详情页 */
.breadcrumb { display: flex; gap: 12px; padding-block: 22px; color: var(--color-subtle); font-size: 12px; }
.article-header { padding-block: 48px 56px; text-align: center; }
.article-header h1 { margin-block: 20px 16px; font-size: clamp(32px, 3.2vw, 42px); line-height: 1.45; }
.article-deck { color: var(--color-muted); font-size: 16px; }
.article-meta { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px 24px; margin-top: 24px; color: var(--color-subtle); font-size: 12px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 720px) minmax(220px, 1fr); justify-content: center; gap: 72px; padding-bottom: 80px; }
.article-body { color: #35312b; font-size: 17px; line-height: 2; }
.article-body > p { margin-bottom: 28px; }
.article-body h2 { margin-block: 34px 20px; font-size: 24px; }
.article-quote { margin-block: 34px; padding: 24px 28px; background: var(--color-paper-deep); color: var(--color-wood-dark); font-family: var(--font-display); font-size: 22px; line-height: 1.75; }
.article-signature { color: var(--color-muted); font-size: 14px; line-height: 1.9; text-align: right; }
.article-aside { padding-top: 8px; }
.article-aside h2 { margin-bottom: 18px; font-size: 20px; }
.related-links { display: flex; flex-direction: column; gap: 18px; color: var(--color-muted); font-size: 14px; }
.share-section { margin-top: 40px; }
.share-section h2 { font-family: var(--font-body); font-size: 13px; }
.copy-link { padding: 0; border: 0; border-bottom: 1px solid currentColor; background: none; color: var(--color-muted); cursor: pointer; font-size: 13px; }
.copy-status { display: block; min-height: 22px; margin-top: 8px; color: var(--color-wood); font-size: 12px; }

/* About 页 */
.about-hero { background: var(--color-paper-deep); }
.about-hero__grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr); align-items: center; gap: 72px; padding-block: 64px; }
.about-hero h1 { margin-block: 18px 20px; font-size: clamp(34px, 3.2vw, 44px); line-height: 1.45; }
.about-hero__grid > div > p:last-child { max-width: 580px; color: var(--color-muted); line-height: 1.85; }
.about-board { width: 100%; max-width: 420px; justify-self: end; }
.about-content { padding-block: 72px 80px; }
.about-section { display: grid; grid-template-columns: minmax(180px, .55fr) minmax(0, 1.45fr); gap: 72px; }
.about-section > h2 { font-size: 28px; }
.about-copy { max-width: 780px; line-height: 1.95; }
.about-copy p + p { margin-top: 18px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-block: 64px; padding: 36px 40px; background: var(--color-ink-soft); color: #bfb4a4; text-align: center; }
.stats div { display: flex; flex-direction: column-reverse; gap: 4px; }
.stats dd { color: #f4ebdd; font-family: var(--font-display); font-size: 36px; line-height: 1.35; }
.stats dt { font-size: 12px; }
.contact-list { display: grid; gap: 22px; }
.contact-list dt { color: var(--color-ink); font-weight: 500; }
.contact-list dd { margin-top: 3px; }

/* 平板 */
@media (max-width: 1024px) {
  :root { --gutter: 28px; }
  .site-nav { gap: 20px; font-size: 14px; }
  .hero { grid-template-columns: 1fr 1fr; gap: 36px; }
  .home-grid { gap: 36px; }
  .article-layout { gap: 42px; }
  .about-hero__grid { gap: 40px; }
  .about-section { gap: 40px; }
}

/* 手机端：单列、折叠导航、17px 正文 */
@media (max-width: 768px) {
  :root { --gutter: 20px; --section-space: 40px; }
  html { scroll-padding-top: 16px; }
  .topbar__inner { min-height: 30px; justify-content: center; font-size: 10px; text-align: center; }
  .topbar__inner > span:first-child { display: none; }
  .site-header__inner { position: relative; min-height: 78px; }
  .brand img { width: 140px; }
  .menu-toggle { display: block; }
  .site-nav { position: absolute; z-index: 20; top: 100%; right: 0; left: 0; display: none; padding: 12px var(--gutter) 20px; border-bottom: 1px solid var(--color-line); background: var(--color-paper); box-shadow: 0 10px 20px rgb(28 27 24 / 8%); }
  .site-nav.is-open { display: flex; flex-direction: column; align-items: stretch; gap: 2px; }
  .site-nav > a:not(.search-link) { padding: 10px 0; }
  .site-nav > a[aria-current="page"]::after { display: none; }
  .search-link { margin-top: 8px; }
  .hero { grid-template-columns: 1fr; gap: 24px; padding-block: 30px 0; }
  .hero__content { gap: 16px; }
  .hero h1 { font-size: 29px; line-height: 1.5; }
  .hero__summary { font-size: 14px; line-height: 1.8; }
  .board-wrap { margin-top: 6px; }
  .home-grid { grid-template-columns: 1fr; gap: 36px; padding-block: 34px 42px; }
  .section-heading { min-height: 46px; }
  .section-heading h2 { font-size: 23px; }
  .news-item { padding-block: 20px; }
  .news-item h3 { font-size: 19px; line-height: 1.55; }
  .news-item > p:last-child { font-size: 13px; }
  .sidebar { gap: 32px; padding-top: 0; }
  .notice-panel { padding: 22px; }
  .quote-band { padding-block: 42px; }
  .quote-band blockquote { font-size: 23px; }
  .quote-band p { font-size: 9px; line-height: 1.7; }
  .site-footer { padding-block: 30px; }
  .site-footer__grid { grid-template-columns: 1fr; gap: 20px; }
  .footer-logo { width: 140px; }
  .footer-nav { display: grid; grid-template-columns: repeat(4, auto); justify-content: start; gap: 6px 16px; }
  .footer-nav h2 { grid-column: 1 / -1; }
  .breadcrumb { padding-block: 18px; font-size: 11px; }
  .article-header { padding-block: 22px 30px; text-align: left; }
  .article-header h1 { margin-block: 16px; font-size: 28px; line-height: 1.5; }
  .article-deck { font-size: 14px; line-height: 1.8; }
  .article-meta { justify-content: flex-start; gap: 4px 14px; margin-top: 18px; font-size: 11px; }
  .article-layout { grid-template-columns: 1fr; gap: 38px; padding-bottom: 44px; }
  .article-body { font-size: 17px; line-height: 1.95; }
  .article-body h2 { font-size: 22px; }
  .article-quote { padding: 22px; font-size: 20px; }
  .article-aside { padding-top: 0; }
  .share-section { margin-top: 28px; }
  .about-hero__grid { grid-template-columns: 1fr; gap: 26px; padding-block: 36px 30px; }
  .about-hero h1 { font-size: 30px; line-height: 1.5; }
  .about-hero__grid > div > p:last-child { font-size: 14px; }
  .about-board { max-width: none; }
  .about-content { padding-block: 40px 44px; }
  .about-section { grid-template-columns: 1fr; gap: 22px; }
  .about-section > h2 { font-size: 25px; }
  .about-copy { font-size: 16px; line-height: 1.95; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 24px 12px; margin-block: 38px; padding: 24px 20px; }
  .stats dd { font-size: 30px; }
  .contact-list { gap: 20px; font-size: 14px; }
}

@media (max-width: 380px) {
  :root { --gutter: 16px; }
  .hero h1, .article-header h1, .about-hero h1 { font-size: 26px; }
  .footer-nav { grid-template-columns: repeat(2, auto); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

@media print {
  .topbar, .site-header, .breadcrumb, .article-aside, .site-footer, .skip-link { display: none !important; }
  body { background: #fff; color: #000; }
  .container { width: 100%; }
  .article-layout { display: block; padding: 0; }
  .article-header { padding: 0 0 28px; }
  .article-body { max-width: none; color: #000; }
  .article-quote { border: 1px solid #ccc; background: #fff; }
}

/* Hugo 内容与列表补充 */
.article-body > * + * { margin-top: 20px; }
.article-body ul, .article-body ol { padding-left: 1.5em; }
.article-body table { display: block; max-width: 100%; overflow-x: auto; border-collapse: collapse; font-size: .95em; }
.article-body th, .article-body td { padding: 10px 16px; border: 1px solid var(--color-line); text-align: left; }
.article-body th { background: var(--color-paper-deep); }
.article-body blockquote { border-left: 3px solid var(--color-wood); padding-left: 20px; color: var(--color-muted); }
.pagination { display: flex; flex-wrap: wrap; gap: 24px; padding-block: 28px; }