/* Insights pages. Same brand tokens as the home page; one light look for every viewer. */
:root { --blue: #57B7EA; --blue-deep: #1F6FA3; --ink: #17324A; --ink-2: #4E6A84; --ink-3: #587086; --sky: #EAF7FE; --sky-2: #F5FBFF; --line: #CFE8F7; --line-2: #E3F1FA;
  --band: #12293D; --band-ink: #EAF4FB; --band-soft: #9DB9CF;
  --display: "Jost", "Avenir Next", Avenir, Futura, system-ui, sans-serif; --body: "Avenir Next", Avenir, system-ui, -apple-system, "Segoe UI", sans-serif; --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace; }
html { color-scheme: light; background: #fff; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
* { box-sizing: border-box; }
body { margin: 0; font: 18px/1.7 var(--body); color: var(--ink); background: #fff; }
a { color: var(--blue-deep); }
a:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; border-radius: 3px; }
.wrap { max-width: 760px; margin: 0 auto; padding-left: max(20px, env(safe-area-inset-left, 0px)); padding-right: max(20px, env(safe-area-inset-right, 0px)); }
.wrap.wide { max-width: 1120px; }
h1, h2, h3 { font-family: var(--display); line-height: 1.15; text-wrap: balance; letter-spacing: -.01em; }

/* header */
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; background: rgba(255,255,255,.95); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line-2); }
.top-in { max-width: 1120px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: .75rem; }
.lock { display: flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--ink); font-family: var(--display); }
.lock svg { width: 34px; height: 34px; color: var(--blue); }
.lock b { display: block; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; font-size: .95rem; line-height: 1; }
.lock small { display: block; font: 500 .62rem var(--mono); letter-spacing: .3em; text-transform: uppercase; color: var(--ink-3); margin-top: 3px; }
.top nav { display: flex; align-items: center; gap: .3rem; flex-wrap: wrap; justify-content: flex-end; }
.top nav a { font: 600 .95rem var(--display); color: var(--ink-2); text-decoration: none; padding: .45rem .7rem; border-radius: 999px; }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--ink); background: var(--sky); }
.top nav a.cta { background: var(--blue); color: #12293D; }
.top nav a.cta:hover { background: #1A5F8C; color: #fff; }
@media (max-width: 640px) { .top nav a:not(.cta):not([href="/insights/"]) { display: none; } }

main { padding-block: clamp(2rem, 6vw, 4rem); }

/* index */
.head { max-width: 760px; margin-bottom: 2.2rem; }
.eyebrow { font: 500 .75rem var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--blue-deep); margin: 0; }
.head h1 { font-size: clamp(2.1rem, 5vw, 3.2rem); margin: .5rem 0 .6rem; }
.lede { font-size: 1.15rem; color: var(--ink-2); margin: 0; }
.cards { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
.card a { display: flex; flex-direction: column; gap: .5rem; height: 100%; padding: 1.4rem 1.5rem; border: 1px solid var(--line); border-radius: 18px; text-decoration: none; color: var(--ink); background: #fff; transition: border-color .15s, box-shadow .15s; }
.card a:hover { border-color: var(--blue); box-shadow: 0 18px 40px -24px rgba(23,50,74,.35); }
.card time { font: 500 .75rem var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
.card h2 { font-size: 1.3rem; margin: 0; }
.card p { margin: 0; color: var(--ink-2); font-size: 1rem; line-height: 1.55; flex: 1; }
.card .more { font: 600 .9rem var(--display); color: var(--blue-deep); }

/* article */
.crumbs { margin: 0 0 1rem; font: 500 .8rem var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.crumbs a { text-decoration: none; }
.post h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 .8rem; }
.byline { margin: 1.1rem 0 0; font-size: .95rem; color: var(--ink-3); }
.byline b { color: var(--ink); }
.toc { margin: 2rem 0 0; padding: 1.1rem 1.4rem; background: var(--sky-2); border: 1px solid var(--line-2); border-radius: 14px; font-size: .98rem; }
.toc b { font-family: var(--display); }
.toc ul { margin: .5rem 0 0; padding: 0; list-style: none; }
.toc li { margin: .2rem 0; }
.prose { margin-top: 2rem; }
.prose h2 { font-size: 1.6rem; margin: 2.4rem 0 .6rem; scroll-margin-top: 90px; }
.prose h3 { font-size: 1.25rem; margin: 1.8rem 0 .5rem; }
.prose p, .prose ul, .prose ol { margin: 0 0 1.1rem; }
.prose li { margin: .3rem 0; }
.prose blockquote { margin: 1.5rem 0; padding: .4rem 1.2rem; border-left: 4px solid var(--blue); color: var(--ink-2); }
.tags { display: flex; flex-wrap: wrap; gap: .5rem; margin: 2rem 0 0; }
.tags span { background: var(--sky); border-radius: 999px; padding: .2rem .8rem; font-size: .85rem; color: var(--ink-2); }
.cta-box { margin: 3rem 0 0; padding: 1.6rem 1.8rem; background: var(--band); color: var(--band-ink); border-radius: 20px; }
.cta-box h2 { margin: 0 0 .5rem; font-size: 1.5rem; color: #fff; }
.cta-box p { margin: 0 0 1rem; color: var(--band-soft); }
.cta-box p:last-child { margin: 0; display: flex; flex-wrap: wrap; gap: .6rem; }
.btn { display: inline-flex; font: 600 1rem var(--display); text-decoration: none; padding: .75rem 1.3rem; border-radius: 999px; background: var(--blue); color: #12293D; }
.btn:hover { background: #7CC8F0; }
.btn.line { background: transparent; color: var(--band-ink); border: 1.5px solid rgba(234,244,251,.45); }
.related { margin-top: 2.5rem; }
.related h2 { font-size: 1.3rem; margin: 0 0 .6rem; }
.related ul { padding-left: 1.2rem; margin: 0; }

/* footer */
.foot { background: var(--band); color: var(--band-soft); padding-block: 2rem; font-size: .88rem; margin-top: 2rem; }
.foot p { margin: 0; }
.foot b { color: var(--band-ink); }
.foot a { color: var(--band-ink); }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }