:root {
  --bg: #0b1020;
  --panel: #11182d;
  --panel-2: #17203a;
  --text: #eef2ff;
  --muted: #a7b0c8;
  --line: rgba(255,255,255,.08);
  --accent: #7c9cff;
  --accent-2: #96f2d7;
  --shadow: 0 20px 60px rgba(0,0,0,.35);
  --radius: 24px;
  --container: 1200px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(124,156,255,.18), transparent 28%),
    radial-gradient(circle at top right, rgba(150,242,215,.14), transparent 22%),
    linear-gradient(180deg, #0b1020 0%, #0c1223 100%);
  color: var(--text);
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
code { background: rgba(255,255,255,.07); padding: 2px 8px; border-radius: 8px; }
.site-shell { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
.site-header { padding: 28px 0 12px; position: sticky; top: 0; z-index: 30; backdrop-filter: blur(14px); background: linear-gradient(180deg, rgba(11,16,32,.88), rgba(11,16,32,.55)); }
.site-header__row { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.brand h1 { margin: 0; font-size: clamp(28px, 4vw, 42px); line-height: 1.05; letter-spacing: -.04em; }
.brand p { margin: 10px 0 0; color: var(--muted); max-width: 760px; font-size: 15px; }
.header-actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.search, .filter-btn {
  height: 46px; border: 1px solid var(--line); background: rgba(255,255,255,.04); color: var(--text); border-radius: 999px; padding: 0 16px; outline: none;
}
.search { min-width: 260px; }
.hero { padding: 44px 0 20px; }
.hero-card { display: grid; grid-template-columns: 1.4fr .9fr; gap: 24px; background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.025)); border: 1px solid var(--line); border-radius: 32px; padding: 28px; box-shadow: var(--shadow); }
.hero-card__meta, .post-meta, .detail-meta, .adjacent-links, .share-list, .related-grid, .author-card, .comments-preview { display: flex; flex-wrap: wrap; gap: 10px; }
.chip { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line); background: rgba(255,255,255,.04); border-radius: 999px; padding: 8px 12px; font-size: 12px; color: var(--muted); }
.hero-card h2 { margin: 14px 0 12px; font-size: clamp(28px, 4vw, 52px); line-height: 1.02; letter-spacing: -.05em; }
.hero-card p { margin: 0 0 20px; color: var(--muted); font-size: 16px; line-height: 1.8; max-width: 60ch; }
.hero-card__image, .post-thumb, .detail-cover { overflow: hidden; border-radius: 24px; border: 1px solid var(--line); background: linear-gradient(135deg, #202b4c, #12192f); min-height: 220px; position: relative; }
.hero-card__image::before, .post-thumb::before, .detail-cover::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(124,156,255,.35), transparent 45%, rgba(150,242,215,.14)); mix-blend-mode: screen; pointer-events: none; }
.hero-card__image img, .post-thumb img, .detail-cover img { width: 100%; height: 100%; object-fit: cover; opacity: .88; }
.hero-actions, .post-actions, .share-list, .adjacent-links { display: flex; gap: 12px; flex-wrap: wrap; }
.btn, .btn-link {
  appearance: none; border: 0; cursor: pointer; min-height: 46px; padding: 12px 18px; border-radius: 999px; font-weight: 600; font-size: 14px; transition: transform .18s ease, opacity .18s ease, background .18s ease; display:inline-flex; align-items:center; justify-content:center;
}
.btn:hover, .btn-link:hover { transform: translateY(-1px); }
.btn-primary { background: linear-gradient(135deg, var(--accent), #9b7cff); color: #fff; }
.btn-secondary, .btn-link, .share-pill { background: rgba(255,255,255,.05); color: var(--text); border: 1px solid var(--line); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin: 30px 0 18px; }
.section-head h3 { margin: 0; font-size: clamp(22px, 3vw, 32px); letter-spacing: -.04em; }
.section-head p { margin: 8px 0 0; color: var(--muted); }
.post-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; padding-bottom: 64px; }
.post-card { display: flex; flex-direction: column; gap: 14px; background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.025)); border: 1px solid var(--line); border-radius: 28px; padding: 16px; box-shadow: var(--shadow); transition: transform .18s ease, border-color .18s ease; }
.post-card:hover { transform: translateY(-4px); border-color: rgba(124,156,255,.4); }
.post-thumb { aspect-ratio: 16 / 10; min-height: auto; }
.post-card h4 { margin: 0; font-size: 24px; line-height: 1.15; letter-spacing: -.04em; }
.post-card p { margin: 0; color: var(--muted); line-height: 1.75; font-size: 14px; }
.post-card footer { margin-top: auto; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.read-link { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; color: #dfe6ff; }
.modal { position: fixed; inset: 0; z-index: 90; display: none; }
.modal.is-open { display: block; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(5, 8, 18, .72); backdrop-filter: blur(12px); }
.modal-panel { position: absolute; inset: 18px; background: #0d1427; border: 1px solid rgba(255,255,255,.08); border-radius: 30px; overflow: auto; box-shadow: var(--shadow); }
.modal-close { position: sticky; top: 18px; margin-left: auto; margin-right: 18px; margin-top: 18px; width: 52px; height: 52px; border-radius: 999px; border: 1px solid var(--line); background: rgba(255,255,255,.06); color: #fff; font-size: 22px; cursor: pointer; display: grid; place-items: center; z-index: 2; }
.detail-wrap { width: min(980px, calc(100% - 40px)); margin: 0 auto; padding: 8px 0 56px; }
.detail-cover { aspect-ratio: 16 / 8; margin-bottom: 26px; }
.detail-title { margin: 18px 0 14px; font-size: clamp(36px, 5vw, 64px); line-height: 1; letter-spacing: -.06em; }
.detail-excerpt { color: #cad4f1; font-size: 18px; line-height: 1.85; margin: 0 0 24px; max-width: 68ch; }
.detail-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 28px; align-items: start; }
.detail-content, .side-card, .author-card, .related-card, .comments-preview, .adjacent-item, .share-block { background: rgba(255,255,255,.03); border: 1px solid var(--line); border-radius: 28px; }
.detail-content { padding: 28px; }
.detail-content p, .side-card p, .related-card p, .comment-card p { color: #d8e0fb; line-height: 1.95; font-size: 16px; margin: 0 0 18px; }
.detail-content h2, .detail-content h3 { margin: 34px 0 14px; font-size: 30px; letter-spacing: -.04em; }
.detail-content blockquote { margin: 24px 0; padding: 20px 22px; border-left: 4px solid var(--accent); background: rgba(124,156,255,.08); border-radius: 18px; color: #ecf0ff; }
.detail-sidebar { position: sticky; top: 92px; display: grid; gap: 16px; }
.side-card { padding: 18px; }
.side-card h5, .detail-subtitle { margin: 0 0 12px; font-size: 15px; color: #dfe6ff; }
.side-card li, .related-card li { color: var(--muted); line-height: 1.8; font-size: 14px; }
.side-card ul { padding-left: 18px; margin: 0; }
.author-card { display: grid; grid-template-columns: 72px 1fr; gap: 16px; padding: 18px; margin: 28px 0; }
.author-avatar { width: 72px; height: 72px; border-radius: 50%; object-fit: cover; }
.author-card h4 { margin: 0 0 8px; font-size: 18px; }
.author-card p { color: var(--muted); margin: 0 0 12px; }
.share-block, .related-section, .comments-preview { padding: 18px; margin-top: 24px; }
.share-pill { padding: 10px 14px; border-radius: 999px; display:inline-flex; }
.adjacent-links { margin-top: 24px; display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); }
.adjacent-item { padding: 18px; }
.adjacent-item strong { display:block; margin-bottom:8px; }
.related-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px; }
.related-card { padding: 18px; }
.related-card h4 { margin:0 0 10px; font-size:18px; }
.comments-preview { display:grid; gap:14px; }
.comment-card { padding: 16px; border:1px solid var(--line); border-radius:20px; background:rgba(255,255,255,.02); }
.loading-state, .error-state { padding: 32px; border: 1px dashed rgba(255,255,255,.15); border-radius: 24px; color: var(--muted); text-align:center; }
.inline-tags { display:flex; flex-wrap:wrap; gap:10px; margin-top:16px; }
body.lock-scroll { overflow: hidden; }
@media (max-width: 1080px) {
  .post-grid, .hero-card, .detail-layout, .related-grid, .adjacent-links { grid-template-columns: 1fr; }
  .detail-sidebar { position: static; }
}
@media (max-width: 720px) {
  .site-shell { width: min(var(--container), calc(100% - 24px)); }
  .site-header__row, .section-head { flex-direction: column; align-items: stretch; }
  .search { min-width: 0; width: 100%; }
  .modal-panel { inset: 0; border-radius: 0; }
  .detail-wrap { width: min(100%, calc(100% - 24px)); }
  .detail-content { padding: 22px; }
  .author-card { grid-template-columns: 1fr; }
}