:root{--bg:#081018;--panel:#101b26;--text:#eef6fb;--muted:#9fb1bf;--accent:#63d8ff;--accent2:#8bf0cb;--line:#243747}
*{box-sizing:border-box}html{color-scheme:dark}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:radial-gradient(circle at 20% 0%,#10273a 0,transparent 34%),var(--bg);color:var(--text);line-height:1.65}a{color:var(--accent)}.topbar{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px max(24px,calc((100vw - 1040px)/2));border-bottom:1px solid var(--line);background:rgba(8,16,24,.92)}.brand{display:flex;align-items:center;gap:12px;color:var(--text);text-decoration:none}.mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#05202c;font-weight:900;display:grid;place-items:center}.brand strong,.brand span{display:block}.brand span{font-size:12px;color:var(--muted)}nav{display:flex;gap:16px;flex-wrap:wrap}nav a{color:var(--muted);text-decoration:none;font-weight:700;font-size:14px}nav a:hover{color:var(--text)}main{max-width:1040px;margin:auto;padding:68px 24px 80px}.eyebrow{font-size:12px;letter-spacing:.15em;color:var(--accent);font-weight:800}.hero{max-width:850px}.hero h1{font-size:clamp(40px,6vw,68px);line-height:1.02;letter-spacing:-.045em;margin:14px 0 20px}.lede{font-size:20px;color:#c5d5df;max-width:760px}.notice{margin:28px 0;padding:18px 20px;border:1px solid #3c5362;border-radius:16px;background:rgba(16,31,43,.78);color:#c4d3dc}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:34px}.card{background:linear-gradient(180deg,rgba(20,35,51,.98),rgba(13,25,36,.98));border:1px solid var(--line);border-radius:20px;padding:24px}.card h2,.card h3{margin-top:0}.card p,.card li{color:#b9cbd6}.card li+li{margin-top:8px}.wide{grid-column:1/-1}.steps{counter-reset:step;list-style:none;padding:0}.steps li{counter-increment:step;position:relative;padding-left:44px;margin:18px 0}.steps li::before{content:counter(step);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#153448;color:var(--accent);font-weight:900}.cta{margin-top:36px;border:1px solid rgba(99,216,255,.45);background:linear-gradient(135deg,rgba(23,57,74,.9),rgba(15,44,43,.86));border-radius:22px;padding:30px}.cta h2{margin:0 0 10px}.cta p{color:#c7d8e1}.button{display:inline-flex;margin-top:10px;padding:13px 18px;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#05202c;text-decoration:none;font-weight:900}.related{margin-top:42px}.related ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 22px;padding-left:20px}.related a{color:#c4d8e3}footer{max-width:1040px;margin:auto;padding:28px 24px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}footer a{color:#c6d8e2}@media(max-width:720px){.topbar{align-items:flex-start;flex-direction:column}.grid,.related ul{grid-template-columns:1fr}.wide{grid-column:auto}main{padding-top:46px}.lede{font-size:18px}}
header{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px max(24px,calc((100vw - 1040px)/2));border-bottom:1px solid var(--line);background:rgba(8,16,24,.92)}
header>.brand{font-size:24px;font-weight:900;letter-spacing:-.03em}nav .button.small{margin:0;padding:8px 13px;color:#05202c;font-size:14px}main>h1{font-size:clamp(40px,6vw,68px);line-height:1.02;letter-spacing:-.045em;margin:14px 0 20px;max-width:900px}main>section{margin-top:34px;background:linear-gradient(180deg,rgba(20,35,51,.98),rgba(13,25,36,.98));border:1px solid var(--line);border-radius:20px;padding:24px}main>section h2,aside h2{margin-top:0}main>section p,main>section li{color:#b9cbd6}main>section li+li{margin-top:8px}aside{margin-top:36px;border:1px solid rgba(99,216,255,.45);background:linear-gradient(135deg,rgba(23,57,74,.9),rgba(15,44,43,.86));border-radius:22px;padding:30px}aside p{color:#c7d8e1}.links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.links a{color:#c4d8e3}.caution{margin-top:34px;padding:18px 20px;border-left:3px solid var(--accent);background:rgba(16,31,43,.78);color:#c4d3dc}
@media(max-width:720px){header{align-items:flex-start;flex-direction:column}.links{grid-template-columns:1fr}}