.res-hero { padding: 96px 24px 72px; }
.res-hero .display-1 { max-width: 820px; }
.res-hero .lead { max-width: 650px; }
.featured { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr); border: 1px solid var(--border-1); border-radius: 20px; overflow: hidden; background: #fff; box-shadow: var(--shadow-sm); }
.featured-cover { min-height: 360px; padding: 52px 64px 56px; position: relative; overflow: hidden; display: flex; flex-direction: column; justify-content: flex-end; color: #f8fafc; background: #202253; }
.featured-cover::before { content: ''; position: absolute; inset: 0; background-image: radial-gradient(rgba(167,176,255,0.28) 1.2px, transparent 1.2px); background-size: 48px 48px; opacity: 0.62; }
.featured-cover::after { content: ''; position: absolute; top: 0; right: 0; width: 18%; height: 100%; background: linear-gradient(180deg, rgba(13,18,47,0.28), rgba(13,18,47,0.08)); }
.cover-grid { position: absolute; inset: 0; background: radial-gradient(circle at 15% 18%, rgba(99,102,241,0.22), transparent 34%), radial-gradient(circle at 88% 24%, rgba(148,163,255,0.14), transparent 30%); opacity: 0.7; }
.featured-cover > * { position: relative; z-index: 1; }
.featured-cover .featured-mark { position: absolute; top: 52px; right: 48px; z-index: 1; width: 82px; height: 82px; color: rgba(165,173,236,0.62); }
.doc-type, .cat, .path-step { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; font-weight: 600; }
.doc-type { color: #b9c2ff; margin-bottom: 24px; font-size: 13px; letter-spacing: 0.22em; }
.featured-cover h2 { color: #f8fafc; font-size: clamp(36px, 4.4vw, 58px); line-height: 1.04; letter-spacing: -0.045em; margin: 0; max-width: 680px; }
.featured-body { padding: 46px 48px; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: 18px; border-left: 1px solid var(--border-1); }
.featured-body .meta { display: flex; flex-wrap: wrap; gap: 10px; font-family: var(--font-mono); font-size: 12px; color: var(--fg-muted); }
.featured-body .meta span { padding: 6px 9px; border: 1px solid var(--border-1); border-radius: 999px; background: var(--bg2); }
.featured-body .summary { color: var(--fg2); font-size: 17px; line-height: 1.62; margin: 0; max-width: 520px; }
.featured-body .btn { margin-top: 6px; }
.featured-points, .resource-tags, .article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.featured-points span, .resource-tags span, .article-tags span { border: 1px solid var(--border-1); border-radius: 999px; padding: 6px 10px; font-size: 12px; color: var(--fg2); background: #fff; }
.ai-section { padding-top: 72px; }
.section-head--tight { margin-bottom: 28px; }
.ai-path { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.path-card { min-height: 240px; padding: 26px; border: 1px solid rgba(16,185,129,0.28); border-radius: 12px; background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%); display: flex; flex-direction: column; gap: 14px; box-shadow: var(--shadow-sm); }
.path-step { color: #059669; }
.path-card h3 { margin: 0; color: var(--fg1); font-size: 21px; line-height: 1.25; letter-spacing: -0.02em; }
.path-card p { margin: 0; color: var(--fg3); font-size: 14px; line-height: 1.62; display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.path-foot { margin-top: auto; font-family: var(--font-mono); font-size: 11px; color: var(--fg-muted); }
.res-chips { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 30px; }
.res-chip { padding: 7px 12px; border-radius: 9999px; background: #fff; border: 1px solid var(--border-1); font-size: 13px; color: var(--fg2); cursor: pointer; transition: all 140ms var(--ease-out); }
.res-chip:hover { border-color: var(--border-brand); color: var(--fg-brand); }
.res-chip.is-active { background: var(--fg1); color: #fff; border-color: var(--fg1); }
.res-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.res-card { display: flex; flex-direction: column; gap: 12px; min-height: 292px; padding: 26px; border: 1px solid var(--border-1); border-radius: 12px; background: #fff; transition: border-color 180ms var(--ease-out), box-shadow 180ms var(--ease-out), transform 180ms var(--ease-out); }
.res-card:hover { border-color: var(--border-2); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.res-card[hidden] { display: none; }
.res-card.is-ai { border-color: rgba(16,185,129,0.34); background: linear-gradient(180deg, #fff 0%, #f8fffb 100%); }
.res-card .cat { color: var(--fg-brand); }
.res-card.is-ai .cat { color: #059669; }
.res-card h3 { font-size: 20px; font-weight: 600; letter-spacing: -0.02em; color: var(--fg1); margin: 0; line-height: 1.28; }
.res-card p { font-size: 14px; line-height: 1.62; color: var(--fg3); margin: 0; display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.res-card .foot { display: flex; justify-content: space-between; align-items: center; margin-top: auto; padding-top: 8px; font-family: var(--font-mono); font-size: 11px; color: var(--fg-muted); }
.res-card-arrow { transition: transform 180ms var(--ease-out), color 180ms var(--ease-out); color: var(--fg3); }
.res-card:hover .res-card-arrow { transform: translateX(4px); color: var(--fg-brand); }
.article-hero { padding: 88px 24px 64px; background: linear-gradient(180deg, #f8fafc 0%, #fff 100%); border-bottom: 1px solid var(--border-1); }
.article-hero-inner { max-width: 1000px; }
.article-back { display: inline-flex; margin-bottom: 28px; color: var(--fg3); font-size: 14px; }
.article-meta { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.article-meta span { font-family: var(--font-mono); font-size: 12px; color: var(--fg-muted); padding: 6px 9px; border: 1px solid var(--border-1); border-radius: 999px; background: #fff; }
.article-hero h1 { max-width: 920px; margin: 0; color: var(--fg1); font-size: clamp(38px, 5vw, 68px); line-height: 1.03; letter-spacing: -0.045em; }
.article-hero p { max-width: 760px; margin: 24px 0 0; color: var(--fg2); font-size: 19px; line-height: 1.62; }
.article-tags { margin-top: 24px; }
.article-shell { display: grid; grid-template-columns: minmax(0, 760px) 280px; gap: 64px; align-items: start; padding-top: 64px; padding-bottom: 96px; }
.article-body { color: var(--fg2); font-size: 17px; line-height: 1.78; }
.article-body h2 { margin: 54px 0 16px; color: var(--fg1); font-size: 32px; line-height: 1.16; letter-spacing: -0.03em; }
.article-body h2:first-child { margin-top: 0; }
.article-body h3 { margin: 34px 0 10px; color: var(--fg1); font-size: 22px; line-height: 1.28; letter-spacing: -0.02em; }
.article-body h4 { margin: 28px 0 10px; color: var(--fg1); font-size: 18px; line-height: 1.35; letter-spacing: -0.01em; }
.article-body p { margin: 0 0 20px; }
.article-body ul, .article-body ol { margin: 0 0 24px; padding-left: 24px; }
.article-body li { margin: 8px 0; }
.article-body blockquote { margin: 28px 0; padding: 18px 22px; border-left: 3px solid var(--fg-brand); border-radius: 0 10px 10px 0; background: #f8fafc; color: var(--fg2); }
.article-body blockquote p:last-child { margin-bottom: 0; }
.article-body strong { color: var(--fg1); font-weight: 650; }
.article-body code { padding: 2px 5px; border-radius: 5px; background: var(--bg2); color: var(--fg1); font-size: 0.88em; }
.article-body pre { overflow-x: auto; padding: 18px; border-radius: 10px; background: #0f172a; color: #e2e8f0; font-size: 13px; line-height: 1.6; }
.article-table-wrap { overflow-x: auto; margin: 28px 0; }
.article-body table { width: 100%; border-collapse: collapse; font-size: 14px; }
.article-body th, .article-body td { border: 1px solid var(--border-1); padding: 10px 12px; text-align: left; vertical-align: top; }
.article-body th { background: var(--bg2); color: var(--fg1); }
.article-sidebar { position: sticky; top: 96px; display: grid; gap: 16px; }
.article-sidebar-card { border: 1px solid var(--border-1); border-radius: 12px; background: #fff; padding: 22px; box-shadow: var(--shadow-sm); }
.article-sidebar-card ul { margin: 14px 0 0; padding-left: 18px; color: var(--fg3); font-size: 14px; line-height: 1.6; }
.article-sidebar-cta h2 { margin: 0 0 10px; color: var(--fg1); font-size: 20px; line-height: 1.25; }
.article-sidebar-cta p { margin: 0 0 16px; color: var(--fg3); font-size: 14px; line-height: 1.6; }
@media (max-width: 980px) { .ai-path, .article-shell, .featured { grid-template-columns: 1fr; } .featured-cover { min-height: 330px; padding: 48px 52px 54px; } .featured-cover .featured-mark { top: 46px; right: 44px; width: 72px; height: 72px; } .featured-body { border-left: 0; border-top: 1px solid var(--border-1); } .res-grid { grid-template-columns: repeat(2, 1fr); } .article-sidebar { position: static; } }
@media (max-width: 640px) { .featured-cover, .featured-body { padding: 32px 24px; } .featured-cover { min-height: 300px; } .featured-cover .featured-mark { top: 30px; right: 24px; width: 56px; height: 56px; } .doc-type { font-size: 11px; } .ai-path, .res-grid { grid-template-columns: 1fr; } .res-card { min-height: auto; } .article-hero { padding: 72px 20px 48px; } .article-shell { padding-top: 42px; padding-bottom: 72px; } }