/* arsminal.com — black & gold, with a white twin. No external requests. */
:root{
  --bg:#050505;--bg2:#0b0b0c;--card:#111112;--card2:#161618;--line:rgba(255,255,255,.08);--line2:rgba(255,255,255,.14);
  --text:#f5f5f7;--muted:#8e8e93;--soft:#c7c7cc;
  --gold:#e3b04b;--gold-hi:#f7dc92;--gold-lo:#a8741c;--on-gold:#1a1204;
  --gold-grad:linear-gradient(180deg,#fbe4a0 0%,#e7b34c 52%,#b07a22 100%);
  --glow:rgba(227,176,75,.18);--grid:rgba(255,255,255,.045);
  --shadow:0 30px 80px rgba(0,0,0,.55),0 0 0 1px rgba(255,255,255,.06);
  --radius:28px;--max:1180px;
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Inter","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  color-scheme:dark;
}
:root[data-theme="light"]{
  --bg:#fbfaf7;--bg2:#f3f1ec;--card:#ffffff;--card2:#f7f6f2;--line:rgba(0,0,0,.08);--line2:rgba(0,0,0,.14);
  --text:#111113;--muted:#6e6e73;--soft:#3a3a3c;
  --gold:#a8741c;--gold-hi:#c8922f;--gold-lo:#7d5410;--on-gold:#fffaf0;
  --gold-grad:linear-gradient(180deg,#d9a540 0%,#b07a22 55%,#7d5410 100%);
  --glow:rgba(200,146,47,.16);--grid:rgba(0,0,0,.05);
  --shadow:0 30px 70px rgba(60,40,10,.14),0 0 0 1px rgba(0,0,0,.06);
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.5 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
img{display:block;max-width:100%}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.gold{background:var(--gold-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* nav */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:saturate(1.6) blur(18px);-webkit-backdrop-filter:saturate(1.6) blur(18px);background:color-mix(in srgb,var(--bg) 72%,transparent);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:22px;height:60px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:650;font-size:18px;letter-spacing:-.01em}
.brand img{width:30px;height:30px;border-radius:8px}
.nav-links{display:flex;gap:22px;margin-left:12px}
.nav-links a{text-decoration:none;color:var(--muted);font-size:14px}
.nav-links a:hover{color:var(--text)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.lang{display:flex;border:1px solid var(--line2);border-radius:999px;padding:2px}
.lang a{font-size:12px;font-weight:600;text-decoration:none;color:var(--muted);padding:4px 9px;border-radius:999px}
.lang a[aria-current]{background:var(--card2);color:var(--text)}
.icon-btn{width:34px;height:34px;border-radius:999px;border:1px solid var(--line2);background:transparent;color:var(--text);display:grid;place-items:center;cursor:pointer}
.icon-btn svg{width:16px;height:16px}
.icon-btn .sun{display:none}
:root[data-theme="light"] .icon-btn .sun{display:block}
:root[data-theme="light"] .icon-btn .moon{display:none}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:9px;height:48px;padding:0 24px;border-radius:999px;font:600 16px/1 var(--sans);text-decoration:none;cursor:pointer;border:0;transition:transform .15s,filter .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn-gold{background:var(--gold-grad);color:var(--on-gold);box-shadow:0 8px 30px var(--glow),inset 0 1px 0 rgba(255,255,255,.45)}
.btn-gold:hover{filter:brightness(1.06)}
.btn-ghost{background:color-mix(in srgb,var(--text) 6%,transparent);color:var(--text);box-shadow:inset 0 0 0 1px var(--line2)}
.btn-sm{height:34px;padding:0 16px;font-size:14px}

/* hero */
.hero{position:relative;padding:96px 0 40px;text-align:center;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-10% -20% auto;height:900px;pointer-events:none;
  background:conic-gradient(from 180deg at 50% -6%,transparent 42%,color-mix(in srgb,var(--gold) 22%,transparent) 48%,color-mix(in srgb,var(--gold) 40%,transparent) 50%,color-mix(in srgb,var(--gold) 22%,transparent) 52%,transparent 58%);filter:blur(8px);opacity:.9}
.hero::after{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:88px 88px;
  -webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 30%,#000 30%,transparent 75%);mask-image:radial-gradient(ellipse 70% 60% at 50% 30%,#000 30%,transparent 75%)}
.hero>*{position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:14px;font:600 12px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--gold)}
.eyebrow::before,.eyebrow::after{content:"";width:40px;height:1px;background:linear-gradient(90deg,transparent,var(--gold))}
.eyebrow::after{transform:scaleX(-1)}
.hero h1{font-size:clamp(44px,7.4vw,92px);line-height:1.02;letter-spacing:-.035em;font-weight:700;margin:22px auto 22px;max-width:980px}
.lead{font-size:clamp(18px,2vw,21px);line-height:1.5;color:var(--muted);max-width:720px;margin:0 auto}
.cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:34px}
.cta-note{margin-top:16px;font-size:13px;color:var(--muted)}

/* agents strip */
.agents{padding:28px 0 8px;text-align:center}
.agents p{font-size:13px;color:var(--muted);margin:0 0 14px;letter-spacing:.02em}
.agent-row{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;background:color-mix(in srgb,var(--text) 4%,transparent);box-shadow:inset 0 0 0 1px var(--line);font-size:14px;font-weight:550;color:var(--soft)}
.chip img{width:20px;height:20px}

/* real app screenshots in a window frame */
.stage{position:relative;margin:60px auto 0;max-width:1120px}
.stage::before{content:"";position:absolute;inset:8% 6% -6%;background:radial-gradient(ellipse at 50% 40%,var(--glow),transparent 65%);filter:blur(40px);z-index:0}
.shot{position:relative;z-index:1;container-type:inline-size;border-radius:clamp(10px,1.6cqw,20px);overflow:hidden;box-shadow:var(--shadow);background:var(--card);line-height:0}
.shot img{width:100%;height:auto}
.shot .tl{position:absolute;top:2.1cqw;left:1.6cqw;display:flex;gap:.75cqw}
.shot .tl i{width:1.05cqw;height:1.05cqw;border-radius:50%;background:#ff5f57;box-shadow:inset 0 0 0 .5px rgba(0,0,0,.2)}
.shot .tl i:nth-child(2){background:#febc2e}.shot .tl i:nth-child(3){background:#28c840}
.only-dark{display:block}.only-light{display:none}
:root[data-theme="light"] .only-dark{display:none}:root[data-theme="light"] .only-light{display:block}

/* sections */
section{padding:110px 0}
.sec-head{text-align:center;max-width:760px;margin:0 auto 56px}
h2{font-size:clamp(32px,4.6vw,56px);line-height:1.06;letter-spacing:-.03em;font-weight:700;margin:18px 0 18px}
.sec-head p{color:var(--muted);font-size:19px;margin:0}
.band{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* idea: two columns */
.idea{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.idea-card{border-radius:var(--radius);padding:34px;background:var(--card);box-shadow:inset 0 0 0 1px var(--line)}
.idea-card.hl{background:radial-gradient(120% 90% at 100% 0%,var(--glow),transparent 60%),var(--card);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--gold) 35%,transparent)}
.idea-card h3{font-size:24px;letter-spacing:-.02em;margin:14px 0 10px}
.idea-card p{color:var(--muted);margin:0}
.idea-ava{display:flex}
.idea-ava span{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;background:var(--card2);box-shadow:0 0 0 3px var(--card);margin-right:-10px;font-size:22px}
.idea-ava img{width:34px;height:34px}

/* features */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feat{border-radius:22px;padding:30px;background:var(--card);box-shadow:inset 0 0 0 1px var(--line);transition:box-shadow .2s,transform .2s}
.feat:hover{box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--gold) 40%,transparent);transform:translateY(-2px)}
.feat-ic{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:color-mix(in srgb,var(--gold) 12%,transparent);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--gold) 28%,transparent)}
.feat-ic img{width:32px;height:32px}
.feat h3{font-size:20px;letter-spacing:-.015em;margin:20px 0 8px}
.feat p{color:var(--muted);margin:0;font-size:16px}

/* light & dark showcase */
.twins{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.twin-cap{margin-top:16px;text-align:center;font-size:15px;color:var(--muted)}
.twin-cap b{color:var(--text)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:s}
.step{position:relative;border-radius:22px;padding:30px;background:var(--card);box-shadow:inset 0 0 0 1px var(--line)}
.step::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--gold-grad);color:var(--on-gold);font-weight:700}
.step h3{font-size:20px;margin:18px 0 8px;letter-spacing:-.015em}
.step p{color:var(--muted);margin:0;font-size:16px}
.note{max-width:760px;margin:28px auto 0;text-align:center;color:var(--muted);font-size:15px}

/* privacy */
.priv{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center}
.priv h2{margin-top:16px}
.priv-list{display:grid;gap:12px}
.priv-item{display:flex;gap:16px;align-items:flex-start;padding:20px 22px;border-radius:18px;background:var(--card);box-shadow:inset 0 0 0 1px var(--line)}
.priv-item .e{font-size:24px;line-height:1}
.priv-item b{display:block;margin-bottom:3px}
.priv-item span{color:var(--muted);font-size:15px}
.lock{aspect-ratio:1;max-width:420px;margin:0 auto;border-radius:50%;display:grid;place-items:center;
  background:radial-gradient(circle at 50% 45%,var(--glow),transparent 62%);position:relative}
.lock::before,.lock::after{content:"";position:absolute;inset:8%;border-radius:50%;border:1px solid color-mix(in srgb,var(--gold) 25%,transparent)}
.lock::after{inset:22%;border-style:dashed}
.lock svg{width:34%;height:34%;filter:drop-shadow(0 10px 30px var(--glow))}
.lock-tag{position:absolute;bottom:14%;font:600 12px/1 var(--mono);letter-spacing:.12em;color:var(--gold);text-transform:uppercase}

/* author */
.author{display:grid;grid-template-columns:260px 1fr;gap:48px;align-items:center;max-width:960px;margin:0 auto}
.author img{width:260px;height:260px;object-fit:cover;object-position:top;border-radius:32px;box-shadow:var(--shadow)}
.author h2{font-size:clamp(28px,3.6vw,42px)}
.author .role{color:var(--gold);font-weight:600;margin:-6px 0 16px}
.author p{color:var(--muted);margin:0 0 14px}
.author .links{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}

/* faq */
.faq{max-width:820px;margin:0 auto}
.faq details{border-bottom:1px solid var(--line);padding:4px 0}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 0;font-size:19px;font-weight:600;letter-spacing:-.01em}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:26px;font-weight:300;color:var(--gold);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin:0 0 22px;color:var(--muted);font-size:17px}

/* get */
.get{text-align:center}
.plats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:900px;margin:0 auto 34px}
.plat{border-radius:20px;padding:24px 16px;background:var(--card);box-shadow:inset 0 0 0 1px var(--line)}
.plat svg{width:30px;height:30px;margin:0 auto 12px;display:block}
.plat b{display:block;font-size:16px}
.plat span{display:inline-block;margin-top:8px;font:600 11px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--gold);padding:5px 9px;border-radius:999px;background:color-mix(in srgb,var(--gold) 12%,transparent)}
.wl{display:flex;gap:10px;max-width:520px;margin:0 auto}
.wl input{flex:1;min-width:0;height:48px;border-radius:999px;border:0;padding:0 20px;font:16px var(--sans);background:var(--card);color:var(--text);box-shadow:inset 0 0 0 1px var(--line2);outline:none}
.wl input:focus{box-shadow:inset 0 0 0 1px var(--gold),0 0 0 4px var(--glow)}
.wl-msg{min-height:22px;margin-top:12px;font-size:14px;color:var(--muted)}
.wl-msg.ok{color:#3fb950}
.wl-msg.err{color:#e5534b}

/* footer */
footer{border-top:1px solid var(--line);padding:40px 0 56px;color:var(--muted);font-size:14px}
footer .wrap{display:flex;gap:24px;flex-wrap:wrap;align-items:center}
footer nav{display:flex;gap:18px;margin-left:auto}
footer a{text-decoration:none}
footer a:hover{color:var(--text)}
.tm{flex-basis:100%;font-size:12px;opacity:.75;margin-top:6px}

/* motion */
.rv{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* responsive */
@media (max-width:980px){
  .nav-links{display:none}
  .grid3,.steps{grid-template-columns:1fr 1fr}
  .priv{grid-template-columns:1fr}
  .lock{max-width:300px}
  .plats{grid-template-columns:1fr 1fr}
  .twins{grid-template-columns:1fr}
}
@media (max-width:720px){
  .wrap{padding:0 16px}
  section{padding:76px 0}
  .hero{padding:64px 0 24px}
  .idea,.grid3,.steps{grid-template-columns:1fr}
  .author{grid-template-columns:1fr;text-align:center;gap:28px}
  .author img{margin:0 auto;width:200px;height:200px}
  .author .links{justify-content:center}
  .wl{flex-direction:column}
  .wl .btn{justify-content:center}
  .nav .btn-sm{display:none}
  footer nav{margin-left:0}
}
@media (max-width:720px){
  .eyebrow{letter-spacing:.1em;gap:10px;font-size:11px;text-align:center}
  .eyebrow::before,.eyebrow::after{width:18px;flex:none}
  .hero h1{font-size:clamp(36px,10.5vw,44px)}
}