/* The Arkin System — shared public design system. Dark, futuristic, blue->green gradients. */
:root{
  --bg:#070b11;--bg2:#05080d;--panel:#101826;--panel2:#0c131e;--line:#1e2a3a;
  --ink:#eaf1f8;--mut:#93a4b8;--acc:#3b82f6;--acc-l:#60a5fa;--acc2:#34d399;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font:16px/1.65 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);overflow-x:hidden}
a{color:inherit;text-decoration:none}
.wrap{max-width:1100px;margin:0 auto;padding:0 24px}
.center{text-align:center}

/* ---- header ---- */
header{position:sticky;top:0;background:rgba(7,11,17,.72);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);z-index:20}
nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;letter-spacing:.06em;font-size:18px}
.brand img{width:34px;height:34px;border-radius:8px}
.nav-links{display:flex;align-items:center}
.nav-links a{color:var(--mut);margin-left:26px;font-size:14px;transition:color .15s}
.nav-links a:hover{color:var(--ink)}
.nav-links a.on{color:var(--ink)}

/* ---- buttons ---- */
.btn{display:inline-block;background:linear-gradient(135deg,var(--acc),var(--acc-l));color:#fff;padding:12px 22px;border-radius:10px;font-weight:600;font-size:14px;box-shadow:0 6px 20px rgba(59,130,246,.35);transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(59,130,246,.5)}
.btn.green{background:linear-gradient(135deg,var(--acc2),#10b981);box-shadow:0 6px 20px rgba(52,211,153,.32)}
.btn.green:hover{box-shadow:0 10px 28px rgba(52,211,153,.5)}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--ink);box-shadow:none}
.btn.ghost:hover{border-color:var(--acc);background:rgba(59,130,246,.08)}

/* ---- glow backdrop ---- */
.glow:before{content:"";position:absolute;top:-30%;left:50%;transform:translateX(-50%);width:900px;height:900px;background:radial-gradient(circle,rgba(59,130,246,.26),rgba(52,211,153,.06) 40%,transparent 65%);filter:blur(20px);z-index:0;pointer-events:none}

/* ---- landing gateway ---- */
.gate{position:relative;min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:60px 24px;overflow:hidden}
.gate-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(59,130,246,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(59,130,246,.06) 1px,transparent 1px);background-size:54px 54px;mask-image:radial-gradient(circle at 50% 38%,#000 0%,transparent 72%);z-index:0}
.gate .inner{position:relative;z-index:1;width:100%;max-width:980px}
.gate .mark{width:92px;height:92px;border-radius:22px;margin:0 auto 26px;display:block;box-shadow:0 14px 50px rgba(59,130,246,.45)}
.gate .tag{display:inline-block;border:1px solid var(--line);background:rgba(52,211,153,.08);color:var(--acc2);padding:7px 16px;border-radius:999px;font-size:13px;margin-bottom:26px;letter-spacing:.04em}
.gate .tag .dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--acc2);margin-right:8px;vertical-align:middle;box-shadow:0 0 8px var(--acc2)}
.gate h1{font-size:64px;line-height:1.04;letter-spacing:-.03em;font-weight:800;margin-bottom:18px}
.gate h1 span{background:linear-gradient(120deg,var(--acc-l),var(--acc2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.gate p.lead{font-size:19px;color:var(--mut);max-width:640px;margin:0 auto 48px}
.choices{display:grid;grid-template-columns:1fr 1fr;gap:22px;max-width:760px;margin:0 auto}
.choice{position:relative;display:block;text-align:left;background:linear-gradient(180deg,var(--panel),var(--panel2));border:1px solid var(--line);border-radius:18px;padding:30px 28px;transition:border-color .2s,transform .2s,box-shadow .2s;overflow:hidden}
.choice:hover{transform:translateY(-5px);border-color:var(--acc);box-shadow:0 20px 50px rgba(0,0,0,.5)}
.choice.pro:hover{border-color:var(--acc-l);box-shadow:0 20px 50px rgba(59,130,246,.25)}
.choice.biz:hover{border-color:var(--acc2);box-shadow:0 20px 50px rgba(52,211,153,.22)}
.choice .ic{font-size:13px;letter-spacing:.14em;font-weight:700;text-transform:uppercase;color:var(--acc-l)}
.choice.biz .ic{color:var(--acc2)}
.choice h2{font-size:26px;margin:10px 0 8px;font-weight:800}
.choice p{color:var(--mut);font-size:14.5px;min-height:44px}
.choice .go{display:inline-flex;align-items:center;gap:8px;margin-top:18px;font-weight:600;font-size:14px;color:var(--ink)}
.choice .go .arrow{transition:transform .2s}
.choice:hover .go .arrow{transform:translateX(5px)}
.gate .mini{margin-top:40px;color:var(--mut);font-size:13px}
.gate .mini a{color:var(--acc-l)}

/* ---- area hero ---- */
.hero{position:relative;padding:96px 0 64px;text-align:center;overflow:hidden}
.hero .wrap{position:relative;z-index:1}
.eyebrow{color:var(--acc-l);font-size:13px;letter-spacing:.14em;font-weight:700;text-transform:uppercase}
.hero.biz .eyebrow{color:var(--acc2)}
.hero h1{font-size:52px;line-height:1.08;letter-spacing:-.025em;margin:14px 0 18px;font-weight:800}
.hero h1 span{background:linear-gradient(120deg,var(--acc-l),var(--acc2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p.lead{font-size:19px;color:var(--mut);max-width:760px;margin:0 auto 34px}
.cta-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---- sections / cards ---- */
.section{padding:72px 0;border-top:1px solid var(--line);position:relative}
.section h2{font-size:34px;letter-spacing:-.02em;margin:12px 0 14px;font-weight:800}
.section p.sub{color:var(--mut);max-width:740px;margin-bottom:36px;font-size:17px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.agrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:32px}
.card{background:linear-gradient(180deg,var(--panel),var(--panel2));border:1px solid var(--line);border-radius:16px;padding:28px;transition:border-color .2s,transform .2s,box-shadow .2s}
.card:hover{border-color:var(--acc);transform:translateY(-4px);box-shadow:0 16px 40px rgba(0,0,0,.4)}
.card h3{font-size:20px;margin-bottom:10px}
.card p{color:var(--mut);font-size:15px}
.card ul{list-style:none;margin-top:14px}
.card li{color:var(--mut);font-size:14.5px;padding:8px 0 8px 28px;position:relative}
.card li:before{content:"";position:absolute;left:0;top:14px;width:9px;height:9px;border-radius:50%;background:var(--acc2);box-shadow:0 0 8px rgba(52,211,153,.6)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:56px}
.stat{background:linear-gradient(180deg,var(--panel),var(--panel2));border:1px solid var(--line);border-radius:14px;padding:22px;transition:border-color .2s,transform .2s}
.stat:hover{border-color:var(--acc);transform:translateY(-3px)}
.stat b{display:block;font-size:26px;background:linear-gradient(120deg,var(--acc-l),var(--acc2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-weight:800}
.stat span{font-size:13px;color:var(--mut)}
.flow{background:linear-gradient(180deg,var(--panel),var(--panel2));border:1px solid var(--line);border-left:3px solid var(--acc);border-radius:14px;padding:24px 28px;margin-top:28px}
.flow .step{color:var(--mut);font-size:15px;padding:10px 0 10px 30px;position:relative;line-height:1.6}
.flow .step b{color:var(--ink)}
.flow .step:before{content:"";position:absolute;left:4px;top:18px;width:8px;height:8px;border-radius:50%;background:var(--acc2);box-shadow:0 0 8px var(--acc2)}
.founder{display:grid;grid-template-columns:120px 1fr;gap:30px;align-items:center}
.founder img{width:120px;height:120px;border-radius:24px;box-shadow:0 12px 40px rgba(59,130,246,.35)}
.founder p{color:var(--mut);font-size:16px;line-height:1.7;margin-bottom:12px}
.founder .sig{color:var(--acc2);font-weight:600;margin-top:8px;display:block}

footer{border-top:1px solid var(--line);padding:44px 0;color:var(--mut);font-size:13px;text-align:center;background:var(--panel2)}
footer a{color:var(--acc-l)}
footer .fnav{margin-bottom:14px}
footer .fnav a{margin:0 12px;color:var(--mut)}
footer .fnav a:hover{color:var(--ink)}

/* ---- pricing tiers ---- */
.tiers{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:32px}
.tiers.b3{grid-template-columns:repeat(3,1fr)}
.tier{background:linear-gradient(180deg,var(--panel),var(--panel2));border:1px solid var(--line);border-radius:16px;padding:26px 22px;transition:border-color .2s,transform .2s}
.tier:hover{border-color:var(--acc);transform:translateY(-4px)}
.tier.feat{border-color:var(--acc-l);box-shadow:0 14px 40px rgba(59,130,246,.18)}
.tier .name{font-weight:700;font-size:16px}
.tier .tagp{color:var(--acc2);font-size:12px;font-weight:600}
.tier .price{font-size:34px;font-weight:800;margin:8px 0 0;background:linear-gradient(120deg,var(--acc-l),var(--acc2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.tier .per{color:var(--mut);font-size:13px;margin-bottom:6px}
.tier ul{list-style:none;margin-top:14px}
.tier li{color:var(--mut);font-size:14px;padding:7px 0 7px 24px;position:relative}
.tier li:before{content:"";position:absolute;left:0;top:13px;width:8px;height:8px;border-radius:50%;background:var(--acc2);box-shadow:0 0 8px rgba(52,211,153,.6)}

/* ---- faq ---- */
.faq{max-width:820px}
.faq details{border:1px solid var(--line);border-radius:12px;padding:0 18px;margin:10px 0;background:linear-gradient(180deg,var(--panel),var(--panel2))}
.faq summary{cursor:pointer;padding:16px 0;font-weight:600;font-size:16px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary:before{content:"+";color:var(--acc-l);margin-right:12px;font-weight:700}
.faq details[open] summary:before{content:"\2013"}
.faq p{color:var(--mut);font-size:15px;padding:0 0 18px 26px;line-height:1.65}

/* ---- prose (legal) ---- */
.prose{max-width:820px}
.prose h3{font-size:19px;margin:28px 0 8px;color:var(--ink)}
.prose p,.prose li{color:var(--mut);font-size:15px;margin-bottom:10px;line-height:1.7}
.prose ul{padding-left:22px;margin-bottom:10px}
.prose a{color:var(--acc-l)}
.notice{border:1px solid #7a5c1e;background:rgba(240,220,160,.06);color:#f0dca0;border-radius:10px;padding:14px 16px;font-size:14px;margin-bottom:24px}

@media(max-width:820px){
  .gate h1{font-size:44px}.hero h1{font-size:38px}.tiers{grid-template-columns:repeat(2,1fr)}
  .stats,.grid2,.agrid{grid-template-columns:1fr 1fr}.nav-links a:not(.keep){display:none}
}
@media(max-width:560px){
  .choices,.stats,.grid2,.agrid,.tiers{grid-template-columns:1fr}.gate h1{font-size:36px}
  .hero{padding:64px 0 48px}.founder{grid-template-columns:1fr;text-align:center}.founder img{margin:0 auto}
}