:root{--bg:#050B24;--bg2:#081638;--card:rgba(18,48,105,.72);--card-h:rgba(28,68,140,.85);--primary:#1677FF;--light:#42A5FF;--purple:#8B5CF6;--cyan:#22D3EE;--text:#fff;--text2:#A9C5EA;--border:rgba(73,145,255,.42);--ok:#22C55E}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.55 "Segoe UI",system-ui,-apple-system,Roboto,sans-serif;overflow-x:hidden}
.bg{position:fixed;inset:0;z-index:-1;background:radial-gradient(600px 400px at 20% 10%,rgba(22,119,255,.25),transparent),radial-gradient(500px 400px at 85% 30%,rgba(139,92,246,.22),transparent),linear-gradient(var(--bg),var(--bg2))}
a{color:var(--light)}
:focus-visible{outline:3px solid var(--cyan);outline-offset:2px}
.topbar{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;max-width:1200px;margin:0 auto;padding:12px 16px}
.logo{color:var(--text);font-weight:700;text-decoration:none}
.nav{display:flex;gap:18px}.nav a{color:var(--text2);text-decoration:none}.nav a:hover{color:var(--text)}
.menu-btn{display:none;background:var(--card);color:var(--text);border:1px solid var(--border);border-radius:10px;padding:8px 14px;font:inherit}
@media(max-width:700px){.menu-btn{display:block}.nav{display:none;width:100%;flex-direction:column;gap:10px;padding:8px 0}.nav.open{display:flex}}
.layout{display:grid;grid-template-columns:1fr;gap:20px;max-width:1200px;margin:0 auto;padding:0 16px}
@media(min-width:1000px){.layout{grid-template-columns:1fr 300px;align-items:start}}
.app{background:rgba(10,30,75,.45);border:1px solid var(--border);border-radius:28px;padding:clamp(16px,4vw,40px);box-shadow:0 20px 60px rgba(0,0,40,.5);backdrop-filter:blur(10px);min-width:0}
.hero{text-align:center}
.app-icon{width:84px;height:84px;margin:0 auto 16px;border-radius:24px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--purple));box-shadow:0 0 40px rgba(99,102,241,.6);animation:glow 3s ease-in-out infinite}
@keyframes glow{50%{box-shadow:0 0 60px rgba(139,92,246,.85)}}
h1{margin:0;font-size:clamp(1.7rem,5vw,2.6rem);line-height:1.15}
.sub{color:var(--text2);margin:.5rem 0 1rem}
.badge{display:inline-block;padding:4px 14px;border:1px solid var(--border);border-radius:999px;background:rgba(22,119,255,.18);color:var(--light);font-size:.9rem}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:24px 0}
@media(max-width:700px){.stats{grid-template-columns:repeat(2,1fr)}}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px}
.stat{padding:14px 8px;text-align:center;transition:transform .2s}.stat:hover{transform:translateY(-3px)}
.stat b{display:block;font-size:1.3rem}.stat span{color:var(--text2);font-size:.85rem}
.step{border:1px solid var(--border);border-radius:22px;padding:clamp(14px,3vw,24px);margin-bottom:18px;background:rgba(22,119,255,.06)}
.step[hidden],[hidden]{display:none!important}
h2{font-size:1.15rem;margin:0 0 6px;display:flex;align-items:center;gap:10px}
h2 i{font-style:normal;display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--primary);font-size:.9rem}
.q{font-weight:600;margin:.4rem 0 14px}
.grid{display:grid;gap:12px}
.brands{grid-template-columns:repeat(4,1fr)}.models{grid-template-columns:repeat(3,1fr)}.types{grid-template-columns:repeat(2,1fr)}
@media(max-width:700px){.brands,.models{grid-template-columns:repeat(2,1fr)}.types{grid-template-columns:1fr}}
.opt{position:relative;background:var(--card);color:var(--text);border:1px solid var(--border);border-radius:16px;padding:16px 10px;font:inherit;cursor:pointer;text-align:center;min-height:56px;transition:transform .15s,background .2s,box-shadow .2s}
.opt:hover{background:var(--card-h);transform:translateY(-2px)}
.opt[aria-checked=true]{border-color:var(--cyan);box-shadow:0 0 22px rgba(34,211,238,.45)}
.opt[aria-checked=true]::after{content:"✓";position:absolute;top:6px;right:10px;color:var(--cyan);font-weight:700}
.opt .ic{display:grid;place-items:center;width:38px;height:38px;margin:0 auto 6px;border-radius:10px;font-weight:700;background:linear-gradient(135deg,var(--primary),var(--purple))}
.opt .ic img{width:22px;height:22px}
.opt small{display:block;color:var(--text2);margin-top:4px}
.types .opt{text-align:left;padding:16px}
.cta{display:block;width:100%;padding:16px;border:0;border-radius:16px;color:#fff;font:700 1.1rem inherit;font-family:inherit;background:linear-gradient(90deg,var(--primary),var(--purple));box-shadow:0 0 28px rgba(99,102,241,.55);cursor:pointer;transition:transform .1s,filter .2s}
.cta:hover:not(:disabled){filter:brightness(1.15)}.cta:active:not(:disabled){transform:scale(.98)}
.cta:disabled{opacity:.4;cursor:not-allowed;box-shadow:none}
.ghost{padding:16px;border-radius:16px;border:1px solid var(--border);background:transparent;color:var(--text);font:inherit;cursor:pointer}
.actions{display:grid;gap:12px;grid-template-columns:1fr 1fr}@media(max-width:600px){.actions{grid-template-columns:1fr}}
.note{color:var(--text2);font-size:.85rem;text-align:center}
.steps{padding-left:22px;color:var(--text2)}.steps li{margin:6px 0;opacity:.4;transition:opacity .3s}.steps li.on{opacity:1;color:var(--text)}.steps li.done{opacity:1;color:var(--ok)}
.bar{height:12px;border-radius:9px;background:rgba(255,255,255,.12);overflow:hidden}#barFill{height:100%;width:0;background:linear-gradient(90deg,var(--primary),var(--cyan));transition:width .2s linear}
.summary{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:16px 0}@media(max-width:600px){.summary{grid-template-columns:1fr}}
.summary div{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:10px 14px}.summary dt{color:var(--text2);font-size:.85rem}.summary dd{margin:0;font-weight:600}
.wrap{max-width:1000px;margin:36px auto;padding:0 16px}
.wrap p{color:var(--text2);max-width:70ch}
details{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:12px 16px;margin-bottom:10px}summary{cursor:pointer;font-weight:600}
.ad-slot{max-width:1200px;min-height:90px;margin:12px auto;padding:8px;border:1px dashed var(--border);border-radius:12px;text-align:center;overflow:hidden}
.ad-slot span{display:block;font-size:.75rem;color:var(--text2);margin-bottom:4px}
@media(max-width:1230px){.ad-slot{margin-left:16px;margin-right:16px}}
.side .ad-slot{min-height:250px;margin:0}
.foot{text-align:center;color:var(--text2);font-size:.85rem;padding:24px 16px 40px}
.toast{position:fixed;left:50%;bottom:20px;transform:translate(-50%,80px);background:var(--card-h);border:1px solid var(--border);padding:10px 18px;border-radius:12px;opacity:0;transition:.3s;z-index:9}.toast.show{transform:translate(-50%,0);opacity:1}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}