:root {
    --dark: #0a0a0a;
    --white: #ffffff;
    --off-white: #f8f8f5;
    --text: #1a1a1a;
    --text-mid: #555555;
    --text-subtle: #888888;
    --border: #e5e5e5;
    --blue: #0078d4;
    --amber: #D97706;
    --font-mono: 'DM Mono', monospace;
    --font-serif: 'Libre Baskerville', Georgia, serif;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { font-family:var(--font-sans); color:var(--text); background:var(--white); line-height:1.7; -webkit-font-smoothing:antialiased; }
a { color:var(--blue); text-decoration:none; }
a:hover { text-decoration:underline; }
img { display:block; max-width:100%; }

/* ── Nav ── */
.nav { position:fixed; top:0; left:0; right:0; z-index:200; height:60px; background:rgba(10,10,10,0.92); backdrop-filter:blur(20px); -webkit-backdrop-filter:blur(20px); border-bottom:1px solid rgba(255,255,255,0.07); }
.nav-inner { height:100%; max-width:1200px; margin:0 auto; padding:0 48px; display:flex; align-items:center; justify-content:space-between; }
.nav-logo img { height:28px; width:auto; }
.nav-back { font-family:var(--font-mono); font-size:10px; font-weight:500; text-transform:uppercase; letter-spacing:0.18em; color:rgba(255,255,255,0.42); transition:color 0.2s; display:flex; align-items:center; gap:8px; }
.nav-back:hover { color:rgba(255,255,255,0.88); text-decoration:none; }
.nav-back i { font-size:9px; }

/* ── Hero ── */
.article-hero { background:var(--dark); padding:140px 0 80px; position:relative; overflow:hidden; }
.article-hero::before { content:''; position:absolute; inset:0; background-image:radial-gradient(rgba(255,255,255,0.04) 1px, transparent 1px); background-size:28px 28px; pointer-events:none; }
.container { max-width:1200px; margin:0 auto; padding:0 48px; position:relative; z-index:1; }
.article-wrap { max-width:760px; margin:0 auto; }
.eyebrow { font-family:var(--font-mono); font-size:10px; text-transform:uppercase; letter-spacing:0.22em; color:var(--amber); margin-bottom:20px; }
.article-hero h1 { font-family:var(--font-serif); font-weight:700; font-size:clamp(32px,4.2vw,52px); color:var(--white); line-height:1.14; letter-spacing:-0.02em; margin-bottom:20px; }
.article-hero .deck { font-size:18px; line-height:1.7; color:rgba(255,255,255,0.62); max-width:640px; }
.article-meta { margin-top:28px; display:flex; gap:24px; flex-wrap:wrap; font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:0.14em; color:rgba(255,255,255,0.38); }

/* ── Body ── */
.article-body { padding:72px 0 96px; }
.article-body h2 { font-family:var(--font-serif); font-weight:700; font-size:clamp(24px,3.2vw,34px); line-height:1.25; letter-spacing:-0.01em; color:var(--text); margin:56px 0 20px; }
.article-body h2:first-child { margin-top:0; }
.article-body h3 { font-family:var(--font-sans); font-weight:600; font-size:19px; color:var(--text); margin:32px 0 12px; }
.article-body p { font-size:17px; line-height:1.8; color:var(--text-mid); margin-bottom:20px; }
.article-body p strong { color:var(--text); font-weight:600; }
.article-body ul, .article-body ol { margin:0 0 24px 22px; }
.article-body li { font-size:17px; line-height:1.8; color:var(--text-mid); margin-bottom:10px; }
.article-body blockquote { border-left:3px solid var(--amber); background:var(--off-white); padding:18px 22px; margin:28px 0; font-size:16px; color:var(--text-mid); }
.article-body blockquote strong { color:var(--text); }
.article-body code { font-family:var(--font-mono); font-size:14px; background:var(--off-white); padding:2px 6px; border:1px solid var(--border); color:var(--text); }
.article-body .callout { background:var(--off-white); border:1px solid var(--border); border-left:3px solid var(--blue); padding:20px 24px; margin:28px 0; font-size:15px; line-height:1.75; color:var(--text-mid); }
.article-body .callout strong { color:var(--text); }

/* ── CTA ── */
.article-cta { margin-top:48px; padding:28px 32px; background:var(--dark); color:var(--white); display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap; }
.article-cta-text { flex:1; min-width:240px; }
.article-cta-text strong { display:block; font-size:17px; font-weight:600; margin-bottom:4px; font-family:var(--font-serif); }
.article-cta-text span { font-size:14px; color:rgba(255,255,255,0.55); }
.btn { display:inline-flex; align-items:center; gap:10px; padding:13px 24px; font-family:var(--font-mono); font-size:11px; font-weight:500; text-transform:uppercase; letter-spacing:0.14em; transition:all 0.2s; border:1px solid; text-decoration:none; }
.btn-white { background:var(--white); color:var(--dark); border-color:var(--white); }
.btn-white:hover { background:var(--off-white); text-decoration:none; }

/* ── Related ── */
.related { margin-top:56px; padding-top:40px; border-top:1px solid var(--border); }
.related-label { font-family:var(--font-mono); font-size:10px; text-transform:uppercase; letter-spacing:0.22em; color:var(--text-subtle); margin-bottom:20px; }
.related-list { list-style:none; margin:0; padding:0; }
.related-list li { margin-bottom:12px; font-size:16px; }
.related-list a { color:var(--text); border-bottom:1px solid var(--border); padding-bottom:2px; }
.related-list a:hover { color:var(--blue); border-color:var(--blue); text-decoration:none; }

/* ── Articles index ── */
.article-list-hero { background:var(--dark); padding:140px 0 64px; position:relative; overflow:hidden; text-align:center; }
.article-list-hero::before { content:''; position:absolute; inset:0; background-image:radial-gradient(rgba(255,255,255,0.04) 1px, transparent 1px); background-size:28px 28px; pointer-events:none; }
.article-list-hero h1 { font-family:var(--font-serif); font-weight:700; font-size:clamp(32px,4.5vw,52px); color:var(--white); line-height:1.1; margin-bottom:16px; position:relative; z-index:1; }
.article-list-hero p { font-size:17px; color:rgba(255,255,255,0.52); max-width:540px; margin:0 auto; position:relative; z-index:1; }
.article-grid { max-width:860px; margin:0 auto; padding:64px 48px 96px; display:grid; gap:18px; }
.article-card { display:block; padding:28px 32px; border:1px solid var(--border); color:var(--text); transition:border-color 0.2s, transform 0.2s; }
.article-card:hover { border-color:var(--text); text-decoration:none; transform:translateY(-2px); }
.article-card-title { font-family:var(--font-serif); font-size:22px; font-weight:700; margin-bottom:8px; line-height:1.3; }
.article-card-desc { font-size:15px; color:var(--text-mid); line-height:1.7; margin:0; }

/* ── Footer ── */
footer { background:var(--dark); border-top:1px solid rgba(255,255,255,0.04); padding:28px 0; }
.footer-inner { max-width:1200px; margin:0 auto; padding:0 48px; display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:16px; }
.footer-nav { display:flex; gap:28px; list-style:none; }
.footer-nav a { font-family:var(--font-mono); font-size:9.5px; text-transform:uppercase; letter-spacing:0.14em; color:rgba(255,255,255,0.22); }
.footer-nav a:hover { color:rgba(255,255,255,0.5); text-decoration:none; }
.footer-copy { font-family:var(--font-mono); font-size:9.5px; letter-spacing:0.05em; color:rgba(255,255,255,0.16); }

@media (max-width:640px) {
    .nav-inner, .container, .footer-inner { padding:0 24px; }
    .article-hero { padding:110px 0 56px; }
    .article-body { padding:48px 0 72px; }
    .article-cta { flex-direction:column; align-items:stretch; text-align:center; }
    .article-grid { padding:48px 24px 72px; }
    .article-card { padding:22px 24px; }
    .footer-inner { flex-direction:column; gap:14px; text-align:center; }
    .footer-nav { justify-content:center; }
}

/* ── Changelog ── */
.changelog-list { max-width:760px; margin:0 auto; padding:0 48px; }
.release { padding:40px 0; border-top:1px solid var(--border); }
.release:first-child { border-top:none; padding-top:0; }
.release-head { display:flex; align-items:baseline; gap:16px; flex-wrap:wrap; margin-bottom:18px; }
.release-version { font-family:var(--font-serif); font-size:30px; font-weight:700; color:var(--text); letter-spacing:-0.01em; margin:0; line-height:1.1; }
.release-head time { font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:0.18em; color:var(--text-subtle); }
.release-notes { list-style:none; margin:0; padding:0; }
.release-notes li { font-size:16px; line-height:1.75; color:var(--text-mid); margin-bottom:12px; padding-left:22px; position:relative; }
.release-notes li::before { content:'▸'; position:absolute; left:0; color:var(--amber); }
.release-notes li strong { color:var(--text); font-weight:600; }
@media (max-width:640px) {
    .changelog-list { padding:0 24px; }
    .release-version { font-size:24px; }
}