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color-mix(in srgb, var(--ink) 5%, transparent), 0 18px 44px color-mix(in srgb, var(--ink) 12%, transparent);--shadow-glow:0 6px 18px color-mix(in srgb, var(--primary) 28%, transparent);--header-h:64px;--measure:680px;--container:1200px}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--header-h) + 24px)}body{background:var(--background);color:var(--ink);font-family:var(--font-body);-webkit-font-smoothing:antialiased;margin:0;font-size:16px;line-height:1.6}a{color:var(--primary);text-underline-offset:.2em}h1,h2,h3{font-family:var(--font-display);color:var(--ink);letter-spacing:-.02em;margin:0}img{max-width:100%}.eyebrow{border:1px solid var(--line-strong);background:var(--tint);color:var(--primary);font-family:var(--font-mono);letter-spacing:.17em;text-transform:uppercase;border-radius:999px;align-items:center;padding:5px 14px;font-size:.71rem;font-weight:500;text-decoration:none;display:inline-flex}.eyebrow-text{font-family:var(--font-mono);letter-spacing:.13em;text-transform:uppercase;color:var(--primary);font-size:.72rem;font-weight:500}.chips{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.chip{text-transform:capitalize;border:1px solid var(--line);background:var(--tint);color:var(--body);border-radius:999px;padding:6px 14px;font-size:.85rem;text-decoration:none;transition:border-color .15s,color .15s;display:inline-block}.chip:hover{border-color:var(--line-strong);color:var(--primary)}.button-ghost{border:1px solid var(--line-strong);border-radius:calc(var(--radius) * .66);color:var(--primary);font-family:var(--font-display);align-items:center;padding:8px 14px;font-size:.875rem;font-weight:600;text-decoration:none;transition:background .15s;display:inline-flex}.button-ghost:hover{background:var(--tint)}.rail-label{font-family:var(--font-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--subtle);margin:0 0 12px;font-size:.7rem;font-weight:500}.rail-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);box-shadow:var(--shadow-card);padding:20px}.rail-card+.rail-card,.rail-card+.rail-section,.rail-section+.rail-section{margin-top:28px}.rail-card__logo{width:auto;height:28px;margin-bottom:14px;display:block}.rail-card__title{font-family:var(--font-display);letter-spacing:-.015em;color:var(--ink);margin:0 0 6px;font-size:1.05rem;font-weight:700;text-decoration:none;display:block}.rail-card__text{color:var(--body);margin:0 0 16px;font-size:.95rem}.rail-links{margin:0;padding:0;list-style:none}.rail-links li{border-bottom:1px solid var(--line);flex-direction:column;gap:2px;padding:11px 0;display:flex}.rail-links li:first-child{padding-top:0}.rail-links a{font-family:var(--font-display);letter-spacing:-.01em;color:var(--ink);font-size:.95rem;font-weight:600;line-height:1.35;text-decoration:none}.rail-links a:hover{color:var(--primary)}.rail-links__meta{font-family:var(--font-mono);color:var(--subtle);font-size:.72rem}.empty-card{border:1px dashed var(--line-strong);border-radius:var(--radius);background:var(--paper);text-align:center;color:var(--body);padding:48px 28px}.empty-card p{margin:0}.list-note{font-family:var(--font-mono);color:var(--subtle);margin:24px 0 0;font-size:.78rem}.site-header{z-index:30;height:var(--header-h);border-bottom:1px solid var(--line);background:color-mix(in srgb, var(--background) 90%, transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);position:sticky;top:0}.site-header__inner{height:100%;max-width:var(--container);align-items:center;gap:28px;margin:0 auto;padding:0 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a[aria-current=location]{border-left-color:var(--primary);color:var(--ink);font-weight:600}.series-parts{margin:14px 0 0;padding:0;list-style:none}.series-parts li{border-top:1px solid var(--line);grid-template-columns:22px 1fr;gap:8px;padding:9px 0;font-size:.92rem;line-height:1.4;display:grid}.series-parts a{color:var(--ink);text-decoration:none}.series-parts a:hover{color:var(--primary)}.series-parts li[aria-current=page]{color:var(--ink);font-weight:700}.series-parts__n{font-family:var(--font-mono);color:var(--primary);font-size:.75rem}@media (max-width:1240px){.article-layout{grid-template-columns:minmax(0, var(--measure))}.article-layout__left{display:none}.article-layout__right .rail-sticky{margin-top:56px;position:static}}@media (max-width:960px){.with-sidebar{grid-template-columns:minmax(0,1fr);gap:48px}.sidebar{position:static}.site-footer__inner{grid-template-columns:1fr 1fr}.site-footer__about{grid-column:1/-1}}@media (max-width:640px){.site-header__inner{gap:16px;padding:0 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