:root{--b:#1d4ed8;--bd:#1e3a8a;--lk:#1e40af;--t:#0f172a;--m:#334155;--page1:#b9cff6;--page2:#d4e2fb;--card:#fffaf0;--cl:#fffaf0;--field:#eef3ff;--fb:#5f7fcf;--bl:#dbe7ff;--bb:#8aa3de;--l:#c9d6f2;--peach:#ffd9b8;--peach-l:#fff1de;--peach-d:#7c2d12;--peach-b:#c2410c;--mint:#d6f3e4;--mint-d:#14532d;--rose:#fde2e2;--rose-d:#7f1d1d;--er:#b91c1c;--ok:#14532d;--grad:linear-gradient(145deg,#2f63e8,#1d4ed8);--clay:9px 11px 22px rgba(30,58,138,.38),-6px -6px 14px rgba(255,255,255,.8),inset 4px 4px 8px #fff,inset -5px -5px 10px rgba(194,140,90,.2);--clay-s:5px 6px 12px rgba(30,58,138,.35),-3px -3px 8px rgba(255,255,255,.8),inset 2px 2px 4px #fff,inset -3px -3px 6px rgba(194,140,90,.2);--pit:inset 3px 3px 7px rgba(30,64,175,.3),inset -3px -3px 6px rgba(255,255,255,.95)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,Arial,sans-serif;line-height:1.6;color:var(--t);background:radial-gradient(circle at 92% 4%,rgba(255,200,160,.7),transparent 38%),linear-gradient(160deg,var(--page1),var(--page2)) fixed;min-height:100vh}
a{color:var(--lk)}
:focus-visible{outline:3px solid #b45309;outline-offset:3px}
.skip{position:absolute;left:-9999px;top:8px;background:var(--peach-l);color:var(--bd);padding:8px 14px;border-radius:14px;font-weight:700;z-index:30}
.skip:focus{left:12px}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
section[id]{scroll-margin-top:96px}
header.top{position:sticky;top:0;z-index:20;background:linear-gradient(160deg,#1e40af,#1d4ed8);color:#fff;border-radius:0 0 28px 28px;box-shadow:0 10px 22px rgba(30,58,138,.38),inset 0 4px 8px rgba(255,255,255,.35),inset 0 -4px 8px rgba(0,0,40,.25)}
header.top :focus-visible{outline-color:#fff}
.bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;padding:12px 0}
.logo{font-size:26px;font-weight:800;color:#fff;text-decoration:none;margin-right:auto}
.bar ul{display:flex;flex-wrap:wrap;gap:4px;list-style:none;margin:0;padding:0}
.bar nav a{display:block;color:#fff;text-decoration:none;font-weight:600;padding:8px 12px;border-radius:14px}
.bar nav a:hover{background:rgba(0,0,40,.28)}
.actions{display:flex;gap:10px}
.hbtn{display:inline-block;text-decoration:none;font-weight:700;padding:9px 18px;border-radius:18px;border:2px solid #fff;color:#fff}
.hbtn:hover{background:rgba(0,0,40,.28)}
.hbtn.fill{background:var(--peach-l);color:var(--bd);box-shadow:var(--clay-s)}
.hbtn.fill:hover{background:var(--peach)}
.btn{display:inline-block;text-decoration:none;font-weight:700;font-size:17px;padding:13px 26px;border-radius:20px;background:var(--grad);color:#fff;box-shadow:5px 6px 12px rgba(30,58,138,.45),-3px -3px 8px rgba(255,255,255,.7),inset 3px 3px 6px rgba(255,255,255,.35),inset -3px -3px 6px rgba(0,0,60,.3)}
.btn:active{box-shadow:inset 4px 4px 9px rgba(0,0,60,.4),inset -3px -3px 6px rgba(255,255,255,.3)}
.btn.alt{background:var(--peach);color:var(--bd);border:2px solid var(--b);box-shadow:var(--clay-s)}
.card{background:var(--card);border:2px solid rgba(255,255,255,.95);border-radius:26px;box-shadow:var(--clay);padding:22px}
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center;margin:34px 0 20px}
.hero h1{font-size:clamp(28px,4.4vw,44px);line-height:1.15;margin:0 0 14px;color:var(--bd)}
.hero p{font-size:18px;margin:0 0 20px}
.cta{display:flex;flex-wrap:wrap;gap:14px}
.note{font-size:14px;color:var(--m);margin-top:14px}
.art svg{width:100%;height:auto;display:block}
section.block{margin:44px 0}
section.block>h2{font-size:clamp(24px,3.2vw,32px);color:var(--bd);margin:0 0 8px}
.lead{margin:0 0 20px;color:var(--m)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}
.grid h3{margin:10px 0 6px;font-size:19px;color:var(--bd)}
.grid p{margin:0}
.ic{display:inline-flex;width:42px;height:42px;border-radius:50%;align-items:center;justify-content:center;font-weight:800;color:#fff;background:var(--grad);box-shadow:var(--clay-s)}
.ic.p{background:var(--peach);color:var(--peach-d);border:2px solid var(--peach-b)}
ol.steps{list-style:none;counter-reset:s;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
ol.steps li{counter-increment:s}
ol.steps h3{margin:10px 0 6px;font-size:19px;color:var(--bd)}
ol.steps li::before{content:counter(s);display:inline-flex;width:42px;height:42px;border-radius:50%;align-items:center;justify-content:center;font-weight:800;color:#fff;background:var(--grad);box-shadow:var(--clay-s)}
pre{background:#0f172a;color:#e2e8f0;padding:16px;border-radius:22px;overflow:auto;font-size:14px;box-shadow:inset 4px 4px 10px rgba(0,0,0,.45),4px 4px 12px rgba(30,58,138,.38);margin:0}
details{background:var(--card);border:2px solid var(--fb);border-radius:20px;box-shadow:var(--clay-s);margin:0 0 12px;padding:0}
summary{cursor:pointer;font-weight:700;padding:14px 18px;color:var(--bd);border-radius:18px}
details[open] summary{border-bottom:1px solid rgba(30,64,175,.22);border-radius:18px 18px 0 0}
details p{margin:0;padding:14px 18px}
.final{text-align:center;background:linear-gradient(145deg,var(--peach-l),var(--peach))}
.final h2{color:var(--bd);margin:0 0 8px;font-size:clamp(24px,3.2vw,32px)}
.final p{margin:0 0 18px}
.final .cta{justify-content:center}
footer{margin-top:48px;background:linear-gradient(170deg,#1e3a8a,#1d4ed8);color:#fff;border-radius:32px 32px 0 0;padding:28px 0}
footer a{color:#fff}
footer .cols{display:flex;flex-wrap:wrap;gap:20px 40px;justify-content:space-between}
footer ul{list-style:none;margin:0;padding:0}
footer li{margin:6px 0}
footer .brand{font-size:24px;font-weight:800}
footer small{display:block;margin-top:18px;color:var(--bl)}
footer :focus-visible{outline-color:#fff}
@media (max-width:820px){.hero{grid-template-columns:1fr}.art{order:-1;max-width:360px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}