:root{--ink:#152940;--muted:#607087;--blue:#3553e8;--line:#dee5ee;--paper:#f5f7fb;--navy:#102640;--mint:#b9efd9}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;font:16px/1.75 "Segoe UI",Arial,sans-serif;color:var(--ink);background:var(--paper)}a{color:var(--blue);text-underline-offset:4px}button,input{font:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #8098ff;outline-offset:4px}[hidden]{display:none!important}.skip-link{position:absolute;left:18px;top:-80px;background:#fff;z-index:20;padding:12px}.skip-link:focus{top:10px}.tutorial-header{height:90px;padding:0 max(32px,calc((100vw - 1360px)/2));display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid var(--line);gap:28px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-size:29px;font-weight:750;letter-spacing:-1.2px;line-height:1}.brand small{display:block;font-size:9px;letter-spacing:2.3px;font-weight:500;margin-top:9px;color:var(--muted)}.brand .light{font-weight:350}.tutorial-header nav{display:flex;gap:28px;align-items:center}.tutorial-header nav a{font-size:14px;text-decoration:none;color:var(--ink)}.tutorial-header nav a[aria-current]{color:var(--blue);font-weight:700}.hero{max-width:1360px;margin:0 auto;display:grid;grid-template-columns:1fr 360px;gap:64px;align-items:center;padding:70px 32px 60px}.eyebrow,.chapter,.hero-map>p{font-size:11px;letter-spacing:2px;font-weight:700;text-transform:uppercase;color:var(--blue)}h1{font-size:clamp(38px,4.4vw,62px);line-height:1.08;letter-spacing:-2px;margin:20px 0 24px;font-weight:720}.hero-description{max-width:690px;font-size:17px;color:var(--muted);line-height:1.8}.hero-description strong{color:var(--ink);font-weight:600}.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:22px;margin:28px 0}.primary{background:var(--blue);color:#fff;padding:13px 20px;text-decoration:none;border-radius:8px;font-size:14px;font-weight:600;box-shadow:0 8px 20px #3553e818}.primary span{margin-left:14px}.secondary,.print-button{font-size:13px;font-weight:600}.print-button{border:0;background:none;color:var(--muted);cursor:pointer;padding:4px}.guide-meta{display:flex;flex-wrap:wrap;gap:12px 20px;font-size:11px;color:var(--muted)}.guide-meta span+span:before{content:"·";margin-right:20px}.hero-map{background:var(--navy);border-radius:20px;padding:30px 28px;color:#fff}.hero-map>p{color:var(--mint);margin:0 0 22px}.hero-map ol{list-style:none;padding:0;margin:0}.hero-map li{display:flex;gap:17px;align-items:center;padding:20px 0;border-bottom:1px solid #ffffff1a}.hero-map b{font-size:12px;color:var(--mint);border:1px solid #8ccfbb66;border-radius:50%;width:37px;height:37px;display:grid;place-items:center;flex-shrink:0}.hero-map span{font-size:16px;font-weight:600}.hero-map small{display:block;font-size:12px;font-weight:400;color:#a9bed8;margin-top:4px}.hero-map>a{display:block;color:var(--mint);font-size:12px;text-decoration:none;margin-top:25px}.guide-layout{max-width:1360px;margin:0 auto;padding:0 32px 64px;display:grid;grid-template-columns:250px minmax(0,1fr);gap:40px;align-items:start}.guide-sidebar{position:sticky;top:24px;max-height:calc(100vh - 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@media(min-width:1500px){.hero{padding-top:85px;padding-bottom:75px}}
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
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