:root {
  --brand: #1b70e0;
  --brand-dark: #0f4faa;
  --accent: #00a98f;
  --ink: #101827;
  --ink-soft: #405066;
  --muted: #6b778a;
  --line: #dfe5ec;
  --paper: #fbfaf6;
  --white: #fff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; color: var(--ink); background: var(--paper); font: 17px/1.72 "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--brand-dark); text-underline-offset: .18em; }
a:hover { color: var(--brand); }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid rgba(27,112,224,.32); outline-offset: 3px; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 1000; padding: .75rem 1rem; color: #fff; background: var(--ink); border-radius: .5rem; }
.skip-link:focus { top: 1rem; }
.reading-progress { position: fixed; inset: 0 auto auto 0; z-index: 300; width: 0; height: 3px; background: linear-gradient(90deg,var(--brand),var(--accent)); }
.site-nav { position: sticky; top: 0; z-index: 200; border-bottom: 1px solid rgba(223,229,236,.9); background: rgba(251,250,246,.9); backdrop-filter: blur(16px) saturate(150%); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; width: min(1180px,calc(100% - 2rem)); margin: auto; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: .65rem; color: var(--ink); font: 800 1.25rem/1 "Playfair Display", Georgia, serif; text-decoration: none; }
.brand svg { width: 30px; height: 30px; }
.nav-links { display: flex; align-items: center; gap: 1.15rem; }
.nav-links > a { color: var(--ink-soft); font-size: .86rem; font-weight: 650; text-decoration: none; }
.nav-links > a[aria-current="page"] { color: var(--brand); }
.nav-cta { padding: .58rem .9rem; color: #fff !important; background: var(--ink); border-radius: .65rem; transition: transform .2s ease, background .2s ease; }
.nav-cta:hover { background: var(--brand-dark); transform: translateY(-1px); }
.hero { width: min(980px,calc(100% - 2rem)); margin: auto; padding: clamp(3.5rem,8vw,6.5rem) 0 2rem; text-align: center; }
.breadcrumb { display: flex; justify-content: center; gap: .45rem; margin-bottom: 1.35rem; color: var(--muted); font-size: .78rem; }
.breadcrumb a { color: inherit; }
.eyebrow { display: inline-flex; align-items: center; gap: .4rem; padding: .35rem .72rem; color: var(--brand-dark); border: 1px solid #cfe0f9; background: #eef5ff; border-radius: 999px; font-size: .72rem; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
h1,h2,h3 { font-family: "Playfair Display", Georgia, serif; color: var(--ink); text-wrap: balance; }
.hero h1 { max-width: 900px; margin: 1.2rem auto .9rem; overflow-wrap: anywhere; font-size: clamp(2.4rem,6vw,4.4rem); line-height: 1.04; letter-spacing: -.035em; }
.dek { max-width: 740px; margin: 0 auto; color: var(--ink-soft); font-size: clamp(1.04rem,2.1vw,1.24rem); text-wrap: pretty; }
.hero-meta { display: flex; flex-wrap: wrap; justify-content: center; gap: .55rem 1.15rem; margin-top: 1.45rem; color: var(--muted); font-size: .8rem; }
.hero-meta strong { color: var(--ink-soft); font-weight: 650; }
.article-shell { display: grid; grid-template-columns: minmax(0,760px) 190px; gap: clamp(2rem,5vw,5rem); width: min(1080px,calc(100% - 2rem)); margin: auto; align-items: start; }
.article { min-width: 0; padding: 1rem 0 5rem; }
.hero-art { margin: 0 0 2rem; overflow: hidden; border: 1px solid var(--line); border-radius: 1.4rem; background: #0c1729; box-shadow: 0 24px 60px rgba(34,49,74,.12); }
.hero-art img { display: block; width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.hero-art figcaption { padding: .7rem 1rem; color: var(--muted); background: #fff; font-size: .76rem; text-align: center; }
.article-image { margin: 2.4rem 0 3.2rem; overflow: hidden; border: 1px solid var(--line); border-radius: 1.1rem; background: #fff; box-shadow: 0 18px 42px rgba(34,49,74,.09); }
.article-image img { display: block; width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.article-image figcaption { padding: .72rem 1rem; color: var(--muted); background: #fff; font-size: .78rem; line-height: 1.45; text-align: center; }
.answer-box { margin: 0 0 2rem; padding: 1.25rem 1.4rem; border-left: 4px solid var(--accent); background: #fff; border-radius: 0 1rem 1rem 0; box-shadow: 0 12px 30px rgba(34,49,74,.06); }
.answer-box span { display: block; margin-bottom: .25rem; color: var(--accent); font-size: .72rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.answer-box p { margin: 0; color: var(--ink-soft); font-size: 1.02rem; }
.article h2 { margin: 3.6rem 0 1rem; font-size: clamp(1.75rem,4vw,2.35rem); line-height: 1.16; letter-spacing: -.018em; scroll-margin-top: 5rem; }
.article h3 { margin: 2.2rem 0 .65rem; font-size: clamp(1.25rem,3vw,1.55rem); line-height: 1.25; }
.article p { margin: 0 0 1.15rem; color: #26364a; text-wrap: pretty; }
.article li { margin-bottom: .52rem; color: #26364a; }
.article ul,.article ol { margin: 0 0 1.3rem; padding-left: 1.35rem; }
.article strong { color: var(--ink); }
.article img { max-width: 100%; height: auto; }
.article blockquote { margin: 2rem 0; padding: 1rem 1.35rem; border-left: 3px solid var(--brand); color: var(--ink-soft); background: #f2f6fb; }
.compare-wrap { overflow-x: auto; margin: 1.5rem 0 2rem; border: 1px solid var(--line); border-radius: .9rem; background: #fff; }
.compare, .article table { width: 100%; min-width: 580px; border-collapse: collapse; font-size: .86rem; }
.compare th,.compare td,.article table th,.article table td { padding: .8rem .9rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.compare th,.article table th { background: #f3f6f8; font-weight: 750; }
.tool-launch { display: grid; grid-template-columns: 1fr auto; gap: 1rem; align-items: center; margin: 2.5rem 0; padding: 1.35rem 1.5rem; border: 1px solid #cfe0f9; background: #f1f7ff; border-radius: 1rem; }
.tool-launch h2,.tool-launch h3 { margin: 0 0 .3rem; font: 750 1.18rem/1.3 "DM Sans",sans-serif; }
.tool-launch p { margin: 0; font-size: .9rem; }
.tool-button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: .7rem 1rem; color: #fff; background: var(--brand); border-radius: .7rem; font-size: .88rem; font-weight: 750; text-decoration: none; white-space: nowrap; transition: transform .2s ease, background .2s ease; }
.tool-button:hover { color: #fff; background: var(--brand-dark); transform: translateY(-1px); }
.checklist { list-style: none; padding-left: 0 !important; }
.checklist li { position: relative; padding-left: 1.65rem; }
.checklist li::before { content: "✓"; position: absolute; left: 0; top: .05rem; color: var(--accent); font-weight: 900; }
.faq { margin-top: 3.5rem; }
.faq details { margin-bottom: .7rem; padding: 1rem 1.1rem; border: 1px solid var(--line); background: #fff; border-radius: .8rem; }
.faq summary { display: flex; justify-content: space-between; gap: 1rem; color: var(--ink); font-weight: 700; cursor: pointer; list-style: none; }
.faq summary::after { content: "+"; color: var(--brand); font-size: 1.2rem; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: .65rem 0 0; font-size: .94rem; }
.end-cta { margin-top: 4rem; padding: clamp(1.6rem,5vw,2.7rem); color: #fff; background: #111c2f; border-radius: 1.2rem; }
.end-cta h2 { margin: 0 0 .6rem; color: #fff; }
.end-cta p { color: #cbd6e4; }
.end-cta .tool-button { background: #fff; color: var(--brand-dark); }
.toc { position: sticky; top: 90px; padding-top: 1rem; }
.toc strong { display: block; margin-bottom: .65rem; color: var(--muted); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; }
.toc a { display: block; margin: 0 0 .58rem; color: var(--muted); font-size: .78rem; line-height: 1.35; text-decoration: none; }
.toc a:hover { color: var(--brand); }
.site-footer { border-top: 1px solid var(--line); background: #fff; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; width: min(1180px,calc(100% - 2rem)); margin: auto; padding: 2rem 0; color: var(--muted); font-size: .8rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1rem; }
.footer-links a { color: var(--ink-soft); }
@media (max-width: 860px) { .article-shell { display: block; width: min(760px,calc(100% - 2rem)); } .toc { display: none; } }
@media (max-width: 620px) { body { font-size: 16px; } .nav-links > a { display: none; } .hero { padding-top: 3rem; } .hero h1 { font-size: 2rem; } .hero-art,.article-image { border-radius: .85rem; } .article-image { margin: 2rem 0 2.6rem; } .tool-launch { grid-template-columns: 1fr; } .tool-button { width: 100%; } .hero-meta { font-size: .74rem; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *,*::before,*::after { transition-duration: .01ms !important; } }