:root{--ink:#13283B;--muted:#405F76;--blue:#045A9F;--canvas:#D4E7F5;--surface:#E1EDF6;--inset:#D8E7F2;--border:rgba(35,78,110,.16);--shadow:0 18px 48px rgba(24,67,98,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--canvas);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}.wrap{width:min(1080px,calc(100% - 48px));margin:auto}a{color:var(--blue);text-underline-offset:3px}nav{position:sticky;z-index:20;top:0;border-bottom:1px solid rgba(19,55,82,.11);background:rgba(204,224,239,.9);backdrop-filter:blur(18px)}.nav{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{color:var(--ink);font-size:14px;font-weight:780;text-decoration:none}.navLinks{display:flex;align-items:center;gap:20px}.navLinks a{color:#36546B;font-size:13px;font-weight:680;text-decoration:none}.lang{padding:10px 13px;border:1px solid var(--border);border-radius:999px;background:rgba(233,242,248,.76)}.guideHero{padding:86px 0 70px;background:radial-gradient(circle at 76% 24%,rgba(133,157,255,.25),transparent 36%),linear-gradient(145deg,#CEE6F7,#D4DAF8)}.eyebrow{margin-bottom:18px;color:var(--blue);font-size:11px;font-weight:820;letter-spacing:.11em;text-transform:uppercase}.guideHero h1{max-width:900px;margin:0;font-size:clamp(44px,6.4vw,76px);line-height:.96;letter-spacing:-.06em;text-wrap:balance}.lead{max-width:760px;margin:28px 0 0;color:#2F5068;font-size:20px;line-height:1.55;text-wrap:pretty}.articleMeta{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:28px;color:#536F84;font-size:13px;font-weight:650}.articleLayout{display:grid;grid-template-columns:250px minmax(0,720px);justify-content:space-between;gap:64px;padding:74px 0 90px}.toc{position:sticky;top:94px;align-self:start;padding:22px;border:1px solid var(--border);border-radius:22px;background:var(--inset)}.toc strong{display:block;margin-bottom:12px;font-size:12px;letter-spacing:.08em;text-transform:uppercase}.toc a{display:block;padding:7px 0;color:#365873;font-size:14px;line-height:1.35;text-decoration:none}.articleBody{min-width:0}.articleBody h2{scroll-margin-top:94px;margin:64px 0 18px;font-size:36px;line-height:1.06;letter-spacing:-.045em;text-wrap:balance}.articleBody h2:first-child{margin-top:0}.articleBody h3{margin:34px 0 12px;font-size:23px;line-height:1.15;letter-spacing:-.025em}.articleBody p,.articleBody li{color:var(--muted);font-size:17px;line-height:1.72}.articleBody p{margin:0 0 20px}.articleBody ul,.articleBody ol{margin:0 0 26px;padding-left:24px}.articleBody li{margin:9px 0}.articleBody strong{color:var(--ink)}.note{margin:30px 0;padding:22px 24px;border:1px solid var(--border);border-radius:20px;background:var(--inset)}.note p{margin:0}.exampleGrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:28px 0}.example{padding:20px;border:1px solid var(--border);border-radius:18px;background:var(--surface)}.example h3{margin:0 0 8px;font-size:18px}.example p{margin:0;font-size:15px;line-height:1.55}.checklist{list-style:none;padding:0!important}.checklist li{position:relative;padding-left:30px}.checklist li:before{content:'✓';position:absolute;left:0;color:var(--blue);font-weight:850}.articleCta{margin-top:64px;padding:32px;border:1px solid var(--border);border-radius:26px;background:linear-gradient(145deg,#D8E8F3,#CADFF0);box-shadow:var(--shadow)}.articleCta h2{margin:0 0 12px;font-size:30px}.articleCta p{margin:0 0 22px}.button{display:inline-flex;min-height:46px;align-items:center;padding:0 19px;border-radius:14px;background:var(--blue);color:#fff;font-size:14px;font-weight:750;text-decoration:none;box-shadow:0 9px 22px rgba(4,90,159,.16)}.related{padding:66px 0;background:#C7DDED}.related h2{margin:0 0 24px;font-size:32px;letter-spacing:-.04em}.relatedCard{display:block;padding:25px 27px;border:1px solid var(--border);border-radius:22px;background:var(--surface);color:var(--ink);text-decoration:none;box-shadow:var(--shadow)}.relatedCard span{display:block;margin-bottom:8px;color:var(--blue);font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.relatedCard strong{font-size:22px;line-height:1.2}footer{padding:28px 0;background:#B8D4E8;color:#294E69}.footerInner{display:flex;justify-content:space-between;gap:20px;font-size:13px}.footerInner a{color:inherit}.skip{position:fixed;z-index:99;top:8px;left:8px;padding:10px 14px;border-radius:10px;background:var(--ink);color:#fff;transform:translateY(-150%)}.skip:focus{transform:none}
@media(max-width:800px){.wrap{width:min(100% - 30px,1080px)}.navLinks>a:not(.lang){display:none}.guideHero{padding:64px 0 54px}.guideHero h1{font-size:clamp(42px,12.5vw,58px)}.lead{font-size:17px}.articleLayout{grid-template-columns:1fr;gap:36px;padding:52px 0 66px}.toc{position:static}.articleBody h2{font-size:31px}.articleBody p,.articleBody li{font-size:16.5px}.exampleGrid{grid-template-columns:1fr}.articleCta{padding:25px 22px}.footerInner{flex-direction:column}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}