/* Rodnik practical guides: shared brand, editorial reading layout. */
:root{color-scheme:light;--ink:#1b2030;--text:#303746;--muted:#606b80;--line:#dfe4ef;--accent:#5546c8;--surface:#fff;--page:#f8f9fc}
*{box-sizing:border-box}html{scroll-padding-top:100px}body{margin:0;background:var(--page);color:var(--text);font:18px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-underline-offset:4px}a:hover{color:#312384}a:focus-visible,summary:focus-visible{outline:3px solid #7664e9;outline-offset:5px}img{display:block;max-width:100%;height:auto}h1,h2,h3{color:var(--ink);text-wrap:balance}h1{font-size:clamp(36px,4.6vw,60px);line-height:1.1;letter-spacing:-.045em;font-weight:650}h2{font-size:30px;line-height:1.25;letter-spacing:-.025em}h3{font-size:22px;line-height:1.4}p{margin:0 0 22px}.skip{position:fixed;left:20px;top:-100px;z-index:30;padding:12px 20px;background:#fff}.skip:focus{top:12px}
.site-header{position:sticky;top:0;z-index:10;border-bottom:1px solid #e6e8f0;background:#f8f9fcf2;backdrop-filter:blur(16px)}.header-inner{max-width:1200px;margin:auto;padding:18px 24px;display:flex;align-items:center;gap:30px}.brand{display:flex;gap:9px;align-items:center;color:var(--ink);font-size:21px;font-weight:650;letter-spacing:-.04em;text-decoration:none;white-space:nowrap}.brand b{font-weight:400;color:var(--muted)}.brand:hover{text-decoration:none;color:var(--ink)}.desktop-nav{display:flex;align-items:center;gap:28px;margin-left:auto;font-size:16px}.desktop-nav a{text-decoration:none;color:var(--muted)}.desktop-nav a:hover,.desktop-nav a[aria-current]{color:var(--ink)}.desktop-nav a[aria-current]{box-shadow:0 2px var(--accent);padding-bottom:3px}.button,.cta{display:inline-flex;justify-content:center;align-items:center;gap:12px;min-height:48px;padding:11px 22px;border-radius:999px;background:#191b22;color:white;font-size:16px;font-weight:600;text-decoration:none;line-height:1.4}.button:hover,.cta:hover{background:#353044;color:#fff}.header-cta{min-height:44px;font-size:15px;padding:10px 18px}.mobile-nav{display:none;margin-left:auto}.mobile-nav summary{list-style:none;cursor:pointer;padding:10px 12px;font-size:15px;border:1px solid var(--line);border-radius:999px}.mobile-nav summary::-webkit-details-marker{display:none}.mobile-nav summary::after{content:"⌄";margin-left:10px}.mobile-nav[open] summary::after{content:"⌃"}.mobile-links{position:absolute;top:72px;right:20px;min-width:230px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 18px 45px #1b203018}.mobile-links a{display:block;padding:10px 14px;text-decoration:none;color:var(--ink)}
.guide-hub{max-width:1200px;margin:auto;padding:0 24px 72px}.guide-hero{position:relative;padding:48px 0 44px}.guide-hero::before{content:"";position:absolute;z-index:-1;inset:-20px 0 -10px;background:radial-gradient(ellipse at 80% 20%,#e9e4ff90,transparent 65%)}.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:14px;line-height:1.5;color:var(--muted);margin-bottom:32px}.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{text-decoration:underline}.crumbs [aria-current]{color:#363e51}.eyebrow,.tag{font-size:13px;font-weight:650;line-height:1.5;letter-spacing:.11em;text-transform:uppercase;color:#5d5484}.guide-hero h1{max-width:900px;margin:18px 0 24px}.intro{font-size:21px;line-height:1.65;color:var(--muted);max-width:760px}.guide-hero .intro{margin-bottom:26px}.guide-method{display:flex;gap:10px 24px;flex-wrap:wrap;font-size:15px;color:#525e72}.guide-method span{display:flex;gap:8px;align-items:center}.guide-method i{font-style:normal;font-size:12px;color:#6255bb;background:#ece9f8;border-radius:50%;width:23px;height:23px;display:inline-grid;place-items:center}
.section-heading{display:flex;justify-content:space-between;align-items:baseline;gap:20px;margin:0 0 20px}.section-heading h2{margin:0;font-size:24px}.section-heading p{font-size:15px;color:var(--muted);margin:0}.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}.card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:24px;background:#fff;overflow:hidden;text-decoration:none;color:var(--text);box-shadow:0 4px 18px #1b203003;transition:transform .2s,box-shadow .2s}.card:hover{color:var(--text);transform:translateY(-3px);box-shadow:0 16px 40px #34305b12}.card-media{overflow:hidden;aspect-ratio:16/10;background:#edeef7;position:relative}.card-media img{width:100%;height:100%;object-fit:cover}.card-media.diagram img{object-fit:contain;padding:16px;background:#f3f0fc}.media-label{position:absolute;left:16px;bottom:16px;padding:5px 10px;background:#fffffff0;color:#444b5d;border-radius:8px;font-size:12px;line-height:1.5}.card-copy{padding:26px;display:flex;flex-direction:column;flex:1}.card h3{font-size:28px;line-height:1.22;margin:12px 0 14px;letter-spacing:-.025em}.card p{font-size:17px;color:var(--muted);margin:0 0 26px}.card-link{font-size:16px;font-weight:600;color:var(--accent);margin-top:auto;display:flex;align-items:center;justify-content:space-between}.card-link b{font-weight:400;font-size:24px}.start-panel{display:flex;justify-content:space-between;align-items:center;gap:32px;margin-top:48px;padding:32px;border:1px solid #dedeee;border-radius:24px;background:linear-gradient(115deg,#f0edf9,#fff)}.start-panel h2{margin:0 0 12px;font-size:28px}.start-panel p{max-width:660px;font-size:17px;color:var(--muted);margin:0}.start-panel .button{flex-shrink:0}.editorial-note{margin:22px 0 0;color:var(--muted);font-size:14px;max-width:850px}
.guide-article{max-width:840px;margin:auto;padding:44px 24px 64px}.guide-article h1{font-size:clamp(34px,4.2vw,52px);margin:20px 0 24px}.guide-article .intro{font-size:21px}.meta{font-size:14px;color:var(--muted);padding-bottom:26px;border-bottom:1px solid var(--line)}.guide-article h2{margin:44px 0 18px}.guide-article figure{margin:30px 0 38px}.guide-article figure img{width:100%;max-height:580px;object-fit:contain;border-radius:20px;background:#f0edf8}.guide-article figcaption{font-size:14px;line-height:1.6;color:var(--muted);margin:14px 0 0;max-width:720px}.guide-article pre{white-space:pre-wrap;overflow-wrap:anywhere;font:inherit;font-size:17px;line-height:1.75;background:#eeecf8;border:1px solid #ded9f1;padding:26px;border-radius:18px;margin:24px 0}.guide-article li{margin:12px 0;padding-left:6px}.guide-article ul,.guide-article ol{padding-left:24px}.guide-article li::marker{color:#6552ac}.note{padding:24px;border-left:3px solid #8d7bce;border-radius:0 14px 14px 0;background:#efeff6;color:#475067;font-size:17px}.related{margin-top:40px;border-top:1px solid var(--line);padding-top:24px;font-size:17px}.site-footer{border-top:1px solid var(--line);max-width:1152px;margin:auto;padding:28px 0 36px;display:flex;align-items:center;justify-content:space-between;gap:24px;color:var(--muted);font-size:14px}.footer-links{display:flex;gap:12px 24px;flex-wrap:wrap}.site-footer a{color:var(--muted);text-decoration:none}.site-footer a:hover{text-decoration:underline}code{overflow-wrap:anywhere}
@media(max-width:900px){.header-inner{gap:20px}.desktop-nav{gap:20px}.guide-hero{padding-top:32px}.start-panel{align-items:flex-start;flex-direction:column;gap:24px}.site-footer{margin:0 24px}}
@media(max-width:640px){body{font-size:17px}.header-inner{padding:14px 20px;gap:12px}.brand{font-size:20px}.brand img{width:28px;height:28px}.desktop-nav{display:none}.mobile-nav{display:block}.header-cta{font-size:14px;padding:10px 14px;min-height:42px}.guide-hub{padding:0 20px 44px}.guide-hero{padding:26px 0 32px}.crumbs{margin-bottom:24px;font-size:13px}.guide-hero h1{font-size:36px;margin:14px 0 20px;line-height:1.12}.intro,.guide-article .intro{font-size:19px;line-height:1.65}.guide-method{gap:10px 16px;font-size:14px}.section-heading h2{font-size:22px}.section-heading p{font-size:14px}.cards{grid-template-columns:1fr;gap:24px}.card{border-radius:20px}.card-copy{padding:22px}.card h3{font-size:26px}.card-media{aspect-ratio:16/10}.start-panel{padding:24px;margin-top:32px;border-radius:20px}.start-panel h2{font-size:26px}.guide-article{padding:26px 20px 40px}.guide-article h1{font-size:34px}.guide-article h2{font-size:26px;margin-top:36px}.guide-article pre{padding:20px;font-size:16px}.guide-article figure img{border-radius:16px}.note{padding:20px;font-size:16px}.site-footer{margin:0 20px;display:block}.footer-links{margin-top:14px;gap:10px 20px}.cta{max-width:100%;text-align:center}.meta{font-size:13px}}
@media(max-width:370px){.header-inner{padding-left:16px;padding-right:16px;gap:8px}.brand b{display:none}.header-cta{font-size:13px;padding:10px 12px}.mobile-nav summary{padding:10px;font-size:13px}.guide-hero h1{font-size:32px}.guide-method{gap:10px}.section-heading{align-items:flex-start;flex-direction:column;gap:5px}}
@media(prefers-reduced-motion:reduce){.card{transition:none}.card:hover{transform:none}}@media print{.site-header,.site-footer,.skip,.cta{display:none}body{background:#fff;color:#000}.guide-article{max-width:none;padding:0}h2{break-after:avoid}pre,figure{break-inside:avoid}}

@media(max-width:640px){.header-cta .cta-desktop{display:none}.header-cta{white-space:nowrap}.section-heading{align-items:flex-start;flex-direction:column;gap:5px}}
.cta-mobile{display:none}@media(max-width:640px){.header-cta .cta-mobile{display:inline}}