/* Scoped layout for crawlable, standalone education pages. */
:root{color-scheme:dark;--bg:#0f1419;--bg-1:#171c22;--bg-2:#1b2026;--text-primary:#dee3eb;--text-secondary:#b8bec8;--text-muted:#8d96a3;--border:#343a43;--border-hover:#4f4633;--brand:#f0b90b;--brand-hover:#ffd87f;--radius:12px;--max-w:1280px;--nav-h:64px}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;min-height:100dvh;background:var(--bg);color:var(--text-primary);font:400 14px/1.6 'IBM Plex Sans',-apple-system,BlinkMacSystemFont,sans-serif;-webkit-font-smoothing:antialiased}
h1,h2,h3,p,ul,ol{margin-top:0}
h1,h2,h3{font-weight:700;letter-spacing:-.02em;line-height:1.15}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.site-header{position:sticky;top:0;z-index:50;background:rgba(11,14,17,.92);border-bottom:1px solid var(--border);backdrop-filter:blur(12px)}
.skip-link{position:fixed;left:16px;top:-60px;z-index:1000;padding:8px 14px;background:var(--text-primary);color:var(--bg);border-radius:7px;font-size:13px;font-weight:600}
.skip-link:focus{top:12px}
.eyebrow{margin:0 0 14px;color:var(--brand);font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 20px;border:1px solid var(--brand);border-radius:6px;background:var(--brand);color:#181a20;font-size:14px;font-weight:600;text-decoration:none;white-space:nowrap}
.button:hover{background:var(--brand-hover);border-color:var(--brand-hover)}
.button.small{min-height:32px;padding:0 12px;font-size:13px}
.guide-nav{width:min(calc(100% - 32px),var(--max-w));min-height:var(--nav-h);margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px}
.guide-brand img{width:148px;height:auto}
.guide-nav-links{display:flex;align-items:center;flex-wrap:wrap;gap:18px}
.guide-nav-links>a:not(.button){color:var(--text-secondary);font-weight:600}
.guide-nav-links>a:not(.button):hover,.guide-nav-links>a:not(.button):focus-visible{color:var(--brand)}
.guide-main{width:min(calc(100% - 32px),1000px);margin:auto;padding:34px 0 80px}
.guide-breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;color:var(--text-muted);font-size:12px}
.guide-breadcrumb a:hover{color:var(--brand)}
.guide-breadcrumb span:last-child{color:var(--text-secondary)}
.guide-hero{padding:54px 0 44px;border-bottom:1px solid var(--border)}
.guide-hero h1{max-width:850px;font-size:clamp(2.25rem,5vw,3.7rem);line-height:1.12}
.guide-lead{max-width:760px;margin-top:20px;color:var(--text-secondary);font-size:clamp(16px,2vw,19px);line-height:1.65}
.guide-date{margin-top:20px;color:var(--text-muted);font-size:12px}
.guide-article{max-width:780px;padding-top:12px}
.guide-article section{padding:28px 0;border-bottom:1px solid var(--border)}
.guide-article h2{margin:0 0 16px;font-size:clamp(22px,3vw,29px)}
.guide-article h3{margin:25px 0 8px;font-size:18px}
.guide-article p,.guide-article li{color:var(--text-secondary);font-size:16px;line-height:1.75}
.guide-article p+p{margin-top:16px}
.guide-article ol,.guide-article ul{padding-left:24px;margin:14px 0}
.guide-article li+li{margin-top:9px}
.guide-article strong{color:var(--text-primary)}
.guide-article a,.guide-related a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.guide-article a:hover,.guide-related a:hover{color:var(--brand-hover)}
.guide-related{max-width:780px;margin:36px 0;padding:28px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-1)}
.guide-related h2{font-size:22px}
.guide-related ul{display:grid;gap:10px;list-style:none;margin-top:15px;padding:0}
.guide-cards{display:grid;gap:12px;list-style:none!important;margin:20px 0!important;padding:0!important}
.guide-cards li{margin:0!important}
.guide-cards a{display:grid;gap:5px;padding:18px 20px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-1);text-decoration:none}
.guide-cards a:hover{border-color:var(--brand)}
.guide-cards strong{color:var(--text-primary)}
.guide-cards span{color:var(--text-secondary);font-size:14px}
.guide-cta{display:flex;align-items:end;justify-content:space-between;gap:24px;padding:32px;border:1px solid var(--border-hover);border-radius:var(--radius);background:var(--bg-2)}
.guide-cta h2{font-size:clamp(22px,3vw,29px)}
.guide-cta p:not(.eyebrow){max-width:610px;margin-top:12px;color:var(--text-secondary);font-size:15px;line-height:1.6}
.guide-footer{width:min(calc(100% - 32px),var(--max-w));margin:auto;padding:42px 0 55px;border-top:1px solid var(--border);display:flex;justify-content:space-between;gap:28px}
.guide-footer>div>a{color:var(--brand);font-weight:700;font-size:18px}
.guide-footer p{color:var(--text-muted);margin-top:8px;font-size:13px}
.guide-footer nav{display:flex;flex-wrap:wrap;align-content:start;gap:10px 18px}
.guide-footer nav a{color:var(--text-secondary);font-size:13px}
.guide-footer nav a:hover{color:var(--brand)}
@media(max-width:760px){.guide-nav{padding:12px 0;align-items:start;flex-direction:column;gap:12px}.guide-nav-links{gap:10px 16px}.guide-nav-links>a:not(.button){font-size:13px}.guide-nav-links .button{min-height:34px}.guide-hero{padding:38px 0 34px}.guide-article section{padding:24px 0}.guide-article p,.guide-article li{font-size:15px}.guide-cta,.guide-footer{flex-direction:column;align-items:start}.guide-cta .button{white-space:normal;text-align:center}}
@media(max-width:390px){.guide-nav,.guide-main,.guide-footer{width:min(calc(100% - 24px),1000px)}.guide-nav-links{gap:8px 12px}.guide-related,.guide-cta{padding:20px}}