/* 资讯静态页样式:和 SPA 新版(src/style.css 控制台/落地页)同一套浅色 + 亮蓝。改色时两处一起改。 */
:root {
  --text: #1d2433;
  --sub: #4b5466;
  --mute: #6b7385;
  --faint: #8a93a5;
  --line: #e3e7ee;
  --pri: #1664ff;
  --pri-deep: #0e52e0;
  --pri-soft: #eef3ff;
  --bg: #f7f8fb;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(600px 400px at 85% 0, rgba(61, 107, 255, 0.1), transparent 70%),
    var(--bg);
  color: var(--text);
  font-family: 'PFSC', system-ui, -apple-system, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: inherit; }
img { max-width: 100%; height: auto; -webkit-user-drag: none; }
/* 全站禁止选中文字、拖拽图片(与 SPA 一致) */
body { -webkit-user-select: none; user-select: none; }
input, textarea { -webkit-user-select: text; user-select: text; }
main { flex: 1; }
.wrap { max-width: 72rem; margin: 0 auto; padding: 0 1.25rem; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--pri); outline-offset: 2px; }

/* header */
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; gap: 1.5rem; min-height: 3.75rem; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; font-weight: 700; font-size: 1.05rem; }
.brand img { width: 2rem; height: 2rem; }
.nav { display: flex; flex: 1; gap: .25rem; flex-wrap: wrap; }
.nav a { text-decoration: none; padding: .4rem .8rem; font-size: .9rem; color: var(--sub); }
.nav a:hover { color: var(--pri); }
.enter-btn[hidden], .user[hidden], .user-menu[hidden] { display: none; }
.enter-btn { text-decoration: none; background: var(--text); color: #fff; font-size: .875rem; padding: .45rem 1.1rem; }
.enter-btn:hover { background: var(--pri); }
/* 已登录:头像 + 昵称 + 下拉 */
.user { position: relative; }
.user-btn { display: flex; align-items: center; gap: .5rem; background: none; border: 0; color: var(--text); cursor: pointer; font: inherit; padding: .25rem .5rem; border-radius: 3px; }
.user-btn:hover { background: #f3f6fc; }
.avatar { width: 2rem; height: 2rem; border-radius: 50%; background: var(--pri-soft); color: var(--pri); font-weight: 600; font-size: .875rem; display: inline-flex; align-items: center; justify-content: center; overflow: hidden; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.user-name { max-width: 8rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .875rem; }
.user-menu { position: absolute; right: 0; top: 100%; margin-top: .4rem; width: 9rem; background: #fff; border: 1px solid var(--line); box-shadow: 0 6px 20px rgba(29, 36, 51, 0.08); padding: .25rem 0; z-index: 20; }
.user-menu a, .user-menu button { display: block; width: 100%; text-align: left; padding: .5rem 1rem; font: inherit; font-size: .875rem; color: var(--text); text-decoration: none; background: none; border: 0; cursor: pointer; }
.user-menu a:hover, .user-menu button:hover { background: #f3f6fc; }
@media (max-width: 767px) {
  .nav { order: 3; flex-basis: 100%; padding-bottom: .5rem; }
  .enter-btn, .user { margin-left: auto; }
}

/* 通用 */
.btn { display: inline-flex; align-items: center; justify-content: center; text-decoration: none; font-size: .95rem; padding: .7rem 1.6rem; background: var(--pri); color: #fff; transition: background-color .15s; }
.btn:hover { background: var(--pri-deep); }
.btn.line { background: #fff; color: var(--text); border: 1px solid #cfd6e2; padding: .45rem 1rem; font-size: .875rem; }
.btn.line:hover { border-color: var(--pri); color: var(--pri); }
.card { background: #fff; border: 1px solid var(--line); overflow: hidden; }

/* 列表页 */
.page-head { padding: 3rem 0 1.75rem; }
.page-head h1 { margin: 0; font-family: inherit; font-size: clamp(2rem, 5vw, 2.75rem); font-weight: 900; }
.page-head p { margin: .5rem 0 0; color: var(--mute); }
.grid { display: grid; gap: 1.25rem; grid-template-columns: 1fr; padding-bottom: 2rem; }
@media (min-width: 640px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .grid { grid-template-columns: repeat(3, 1fr); } }
.post-card { display: flex; flex-direction: column; text-decoration: none; transition: border-color .15s, box-shadow .15s; }
.post-card:hover { border-color: #9db8ff; box-shadow: 0 16px 32px -20px rgba(22, 100, 255, 0.4); }
.post-card .cover { aspect-ratio: 16 / 9; width: 100%; object-fit: cover; display: block; background: var(--bg); }
.post-card .body { padding: 1rem 1.25rem 1.25rem; display: flex; flex-direction: column; gap: .5rem; flex: 1; }
.post-card h2 { margin: 0; font-size: 1.05rem; font-weight: 600; line-height: 1.5; }
.post-card:hover h2 { color: var(--pri); }
.post-card .desc { margin: 0; color: var(--mute); font-size: .9rem; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.post-card time { margin-top: auto; font-size: .8rem; color: var(--faint); }
.pager { display: flex; justify-content: center; align-items: center; gap: .75rem; padding: 1rem 0 3.5rem; flex-wrap: wrap; }
.pager .current { color: var(--mute); padding: 0 .5rem; font-size: .9rem; }
.empty { padding: 4rem 0; text-align: center; color: var(--faint); }

/* 文章页 */
.article { max-width: 48rem; margin: 2rem auto 0; padding: 2.5rem clamp(1.25rem, 5vw, 3.5rem) 1rem; background: #fff; border: 1px solid var(--line); }
.crumb { font-size: .875rem; color: var(--mute); text-decoration: none; }
.crumb:hover { color: var(--pri); }
.article h1 { margin: .75rem 0 .5rem; font-family: inherit; font-size: clamp(1.6rem, 4vw, 2.25rem); font-weight: 900; line-height: 1.35; }
.meta { font-size: .85rem; color: var(--faint); }
.hero-cover { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; margin: 1.5rem 0; }
.prose { font-size: 1.0125rem; line-height: 1.95; color: var(--sub); overflow-wrap: anywhere; }
.prose h2 { font-size: 1.35rem; font-weight: 600; color: var(--text); margin: 2.2rem 0 .8rem; padding-bottom: .5rem; border-bottom: 1px solid var(--line); line-height: 1.45; }
.prose h3 { font-size: 1.15rem; font-weight: 600; color: var(--text); margin: 1.8rem 0 .6rem; }
.prose h4, .prose h5, .prose h6 { font-weight: 600; color: var(--text); margin: 1.4rem 0 .5rem; }
.prose p { margin: 1rem 0; }
.prose strong { color: var(--text); }
.prose a { color: var(--pri); text-underline-offset: 3px; }
.prose ul, .prose ol { padding-left: 1.5rem; margin: 1rem 0; }
.prose li { margin: .35rem 0; }
.prose blockquote { margin: 1.25rem 0; padding: .6rem 1rem; border-left: 3px solid var(--pri); background: var(--pri-soft); color: var(--sub); }
.prose img { display: block; margin: 1.5rem auto; border: 1px solid var(--line); }
.prose code { background: #f3f5f9; padding: .1rem .35rem; border-radius: 3px; font-size: .92em; }
.prose pre { background: #1d2433; color: #e4e8ef; padding: 1rem; overflow-x: auto; }
.prose pre code { background: none; padding: 0; }
.prose table { border-collapse: collapse; width: 100%; display: block; overflow-x: auto; margin: 1.25rem 0; font-size: .92rem; }
.prose th, .prose td { border: 1px solid var(--line); padding: .5rem .75rem; text-align: left; }
.prose th { background: #f7f8fb; color: var(--text); font-weight: 600; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }
.cta { margin: 3rem 0 2.5rem; padding: 2rem 1.5rem; text-align: center; background: var(--pri-soft); border: 1px solid #cfe0ff; }
.cta h2 { margin: 0; font-size: 1.3rem; font-weight: 600; }
.cta p { margin: .5rem 0 1.25rem; color: var(--mute); }

/* footer */
.site-footer { margin-top: 3rem; border-top: 1px solid var(--line); background: #fff; color: var(--mute); }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 2rem; padding-top: 2rem; padding-bottom: 2rem; }
.f-links { display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; margin: .9rem 0 .5rem; font-size: .875rem; }
.f-links a { text-decoration: none; }
.f-links a:hover, .f-copy a:hover { color: var(--pri); }
.f-copy { font-size: .75rem; color: var(--faint); }
.f-copy p { margin: .25rem 0; }
.f-copy a { text-decoration: none; }
.f-qr { display: flex; align-items: center; gap: 1rem; }
.f-qr img { width: 6.5rem; height: 6.5rem; border: 1px solid var(--line); background: #fff; padding: .3rem; }
.f-qr strong { color: var(--text); font-size: .9rem; font-weight: 600; }
.f-qr span { display: block; font-size: .75rem; color: var(--faint); }