:root{--bg:#090f14;--panel:#111a22;--line:#253541;--text:#f3f7fa;--muted:#9db2c2;--green:#9bf43f;--blue:#69c9ff;--warn:#ffc857}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,"Yu Gothic UI",sans-serif;line-height:1.7}a{color:var(--blue)}header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;padding:14px max(24px,calc((100% - 1160px)/2));background:rgba(7,13,18,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.brand{font-size:23px;font-weight:900;text-decoration:none;color:white}.brand b{color:#ffb51b}.back{padding:9px 14px;border:1px solid var(--line);border-radius:10px;text-decoration:none;color:#dceaf3}main{max-width:1160px;margin:auto;padding:40px 24px 80px}.hero{padding:38px;border:1px solid #355028;border-radius:20px;background:radial-gradient(circle at 80% 0,rgba(155,244,63,.16),transparent 38%),linear-gradient(135deg,#14211b,#0e171e)}.eyebrow{color:var(--green);font-weight:800}.hero h1{margin:5px 0 10px;font-size:clamp(32px,5vw,54px);line-height:1.2}.hero p{max-width:760px;color:#c6d5df}.quick{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.quick a{padding:8px 13px;border-radius:999px;background:#1a2731;text-decoration:none;color:white}.section{padding-top:48px}.section h2{font-size:30px;margin:0 0 18px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card,.step,.checklist,.steam-window,details{border:1px solid var(--line);border-radius:15px;background:var(--panel)}.card{padding:20px}.card h3{margin:0 0 8px}.good{color:var(--green)}.warn{color:var(--warn)}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.step{padding:17px}.num{display:grid;place-items:center;width:30px;height:30px;margin-bottom:10px;border-radius:50%;background:var(--green);color:#071006;font-weight:950}.mock{height:105px;margin:13px 0;border-radius:10px;background:linear-gradient(145deg,#223340,#101820);padding:12px}.mock-line{height:9px;margin:8px 0;border-radius:9px;background:#405261}.mock-line.short{width:55%}.mock-button{width:46%;height:26px;margin:12px 0 0 auto;border-radius:7px;background:var(--green)}.steam-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}.steam-window{overflow:hidden}.steam-bar{padding:10px 15px;background:#223442;color:#cde9fa}.steam-screen{padding:24px;background:linear-gradient(145deg,#172836,#0b1218)}.steam-screen strong{display:block;font-size:22px}.steam-screen .code{margin-top:20px;padding:12px;border:1px solid #496072;background:#081016;color:#cde9fa}.ordered{margin:0;padding-left:22px}.ordered li{padding:7px}.note{margin-top:14px;padding:12px 15px;border-left:3px solid var(--warn);background:#261f10;color:#f4d98c}.pay{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.pay article{padding:18px;border:1px solid var(--line);border-radius:13px;background:var(--panel)}.pay h3{margin:0}.small{color:var(--muted);font-size:14px}.checklist{padding:20px}.checklist li{margin:8px 0}details{padding:14px 18px;margin:10px 0}summary{cursor:pointer;font-weight:800}footer{padding:30px 24px;text-align:center;border-top:1px solid var(--line);color:var(--muted)}@media(max-width:800px){main{padding:24px 16px 60px}.hero{padding:25px}.grid,.steps,.steam-layout,.pay{grid-template-columns:1fr}.section{padding-top:34px}header{padding:12px 16px}}
/* Main-site shared frame */
html{overflow-y:scroll;scrollbar-gutter:stable}body{background:#0d1218;font-family:system-ui,-apple-system,"Segoe UI",sans-serif}header{height:68px;padding:0 max(24px,calc((100vw - 1240px)/2 + 28px));gap:28px;background:#090e13;border-color:#2a3946;backdrop-filter:none}.brand{font-size:22px}.brand b{color:#f7b500}.back{padding:10px 13px;border:0;border-radius:9px;background:#a6f34d;color:#101609;font-weight:900}main{max-width:1240px;padding:24px 28px 80px}.hero{padding:30px 32px;border-radius:16px}.card,.step,.checklist,.steam-window,details{background:#131b24;border-color:#2a3946}footer{max-width:1240px;margin:0 auto 30px;padding:20px 28px;text-align:left;border-color:#2a3946;color:#6f7c89;font-size:12px}@media(max-width:800px){main{padding:14px 16px 60px}header{height:68px;padding:10px 16px;gap:10px}footer{padding-inline:16px}}

/* Keep the guide aligned with the main site even if shared styles are cached. */
.site-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;text-decoration:none;white-space:nowrap}
.site-brand img{display:block;width:38px;height:38px;max-width:38px;max-height:38px;flex:0 0 38px;object-fit:contain}
.brand-copy{display:flex;flex-direction:column;line-height:1}
.brand-copy strong{font-size:22px;font-weight:950;letter-spacing:-.04em}
.brand-copy strong span{color:var(--green)}
.brand-copy small{margin-top:5px;color:#8fa2b1;font-size:9px;font-weight:750;letter-spacing:.08em}
.checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:44px;row-gap:4px;padding:22px 28px 22px 46px}
.checklist li{margin:4px 0}
@media(max-width:800px){.site-brand img{width:34px;height:34px;max-width:34px;max-height:34px;flex-basis:34px}.brand-copy small{display:none}.checklist{grid-template-columns:1fr;padding:18px 20px 18px 38px}}