:root {
  --article-bg: #060b18;
  --article-surface: #0d1a35;
  --article-card: #0f1e38;
  --article-border: #1a2e52;
  --article-text: #e8eaf2;
  --article-muted: #91a0bd;
  --article-accent: #ffad00;
  --article-link: #73a7ff;
}

* { box-sizing: border-box; }
html { background: var(--article-bg); color: var(--article-text); font-family: "DM Sans", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 50% -10%, rgba(59, 130, 246, 0.16), transparent 38%), var(--article-bg); }
a { color: inherit; text-decoration: none; }

.article-nav { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid rgba(26, 46, 82, .8); background: rgba(6, 11, 24, .9); backdrop-filter: blur(16px); }
.article-nav-inner { width: min(1120px, calc(100% - 40px)); height: 68px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.article-brand { display: inline-flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 700; }
.article-brand img { width: 30px; height: 30px; border-radius: 8px; }
.article-nav nav { display: flex; align-items: center; gap: 24px; color: var(--article-muted); font-size: 14px; }
.article-nav nav a:hover, .article-nav nav a.active { color: var(--article-text); }
.article-nav .article-nav-cta { padding: 8px 16px; border-radius: 999px; background: var(--article-accent); color: #111827; font-weight: 700; }

.article-list-hero { width: min(900px, calc(100% - 40px)); margin: 0 auto; padding: 100px 0 84px; }
.article-eyebrow { color: var(--article-accent); font-size: 12px; letter-spacing: .2em; font-weight: 700; }
.article-list-hero h1 { max-width: 760px; margin: 18px 0 18px; font-size: clamp(42px, 7vw, 78px); line-height: 1.08; letter-spacing: -.04em; }
.article-list-hero h1 em { color: var(--article-accent); font-style: normal; }
.article-list-hero p { max-width: 650px; margin: 0; color: var(--article-muted); font-size: 18px; line-height: 1.8; }
.article-list-wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; padding: 0 0 96px; }
.article-section-head { display: flex; align-items: baseline; gap: 16px; border-bottom: 1px solid var(--article-border); padding-bottom: 16px; margin-bottom: 24px; }
.article-section-head span { color: var(--article-accent); font-size: 12px; letter-spacing: .12em; font-weight: 700; }
.article-section-head h2 { margin: 0; font-size: 28px; }
.article-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.article-card { min-height: 280px; display: flex; flex-direction: column; padding: 24px; border: 1px solid var(--article-border); border-radius: 18px; background: linear-gradient(180deg, rgba(15, 30, 56, .94), rgba(13, 26, 53, .72)); }
.article-card:hover { border-color: rgba(115, 167, 255, .65); transform: translateY(-2px); transition: border-color .18s, transform .18s; }
.article-card-kicker, .article-detail-meta { color: var(--article-muted); font-size: 12px; letter-spacing: .08em; }
.article-card h2 { margin: 16px 0 12px; font-size: 23px; line-height: 1.35; }
.article-card h2 a:hover { color: var(--article-link); }
.article-card p { margin: 0; color: var(--article-muted); line-height: 1.75; }
.article-read-more { margin-top: auto; padding-top: 24px; color: var(--article-link); font-size: 14px; font-weight: 700; }
.article-empty, .article-empty-page { padding: 48px 24px; border: 1px dashed var(--article-border); border-radius: 16px; color: var(--article-muted); text-align: center; }
.article-empty-page { width: min(720px, calc(100% - 40px)); margin: 100px auto; }
.article-empty-page h1 { color: var(--article-text); }
.article-empty-page a { display: inline-block; margin-top: 16px; color: var(--article-link); }

.article-detail { width: min(780px, calc(100% - 40px)); margin: 0 auto; padding: 82px 0 100px; }
.article-detail-meta { display: flex; gap: 10px; }
.article-detail-meta a { color: var(--article-link); }
.article-detail h1 { margin: 20px 0; font-size: clamp(36px, 6vw, 62px); line-height: 1.15; letter-spacing: -.04em; }
.article-lead { margin: 0 0 44px; color: var(--article-muted); font-size: 19px; line-height: 1.8; }
.article-content { color: #d8deeb; font-size: 17px; line-height: 1.95; }
.article-content h2, .article-content h3, .article-content h4 { color: var(--article-text); line-height: 1.35; margin: 42px 0 14px; }
.article-content h2 { font-size: 30px; }
.article-content h3 { font-size: 24px; }
.article-content h4 { font-size: 20px; }
.article-content p { margin: 0 0 22px; }
.article-content ul { margin: 0 0 24px; padding-left: 24px; }
.article-content li { margin: 8px 0; }
.article-content a { color: var(--article-link); text-decoration: underline; text-underline-offset: 3px; }
.article-content strong { color: #fff; }
.article-detail-footer { display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid var(--article-border); margin-top: 54px; padding-top: 20px; color: var(--article-link); font-size: 14px; }
.article-footer { width: min(1120px, calc(100% - 40px)); margin: 0 auto; padding: 24px 0 36px; border-top: 1px solid var(--article-border); color: var(--article-muted); font-size: 13px; }
.article-footer a { color: var(--article-text); }

@media (max-width: 780px) {
  .article-nav-inner { width: min(100% - 28px, 1120px); }
  .article-nav nav { gap: 12px; font-size: 12px; }
  .article-nav nav a:nth-child(1) { display: none; }
  .article-list-hero, .article-list-wrap, .article-detail { width: min(100% - 28px, 780px); }
  .article-list-hero { padding: 70px 0 58px; }
  .article-grid { grid-template-columns: 1fr; }
  .article-detail-footer { flex-direction: column; }
}