/* ViaCerber — Claude-inspired design system */
:root{
  --canvas:#FAF9F5; --canvas-2:#F1EFE7; --surface:#FFFFFF; --surface-2:#F4F2EA;
  --hairline:#E7E3D8; --ink:#1F1E1C; --ink-2:#6B6760;
  --accent:#D97757; --accent-deep:#BD5D3A; --accent-soft:#E89B7F;
  --camera:#D97757; --alert:#C5503B; --good:#4F7A52; --info:#4E8D86; --caution:#C8923B;
  --radius:24px; --radius-sm:14px; --maxw:1120px;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
@media (prefers-color-scheme: dark){
  :root{ --canvas:#16150F; --canvas-2:#121109; --surface:#24221B; --surface-2:#2C291F;
    --hairline:#3A362B; --ink:#F5F2E9; --ink-2:#A7A296; --accent:#E08862; --accent-deep:#C96B47; }
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);
  background:linear-gradient(180deg,var(--canvas),var(--canvas-2));
  -webkit-font-smoothing:antialiased;line-height:1.6;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:96px 0}
h1,h2,h3{font-family:var(--serif);font-weight:700;line-height:1.1;letter-spacing:-.01em}
h2{font-size:clamp(28px,4vw,44px);margin-bottom:14px}
h3{font-size:22px}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.lead{color:var(--ink-2);font-size:clamp(16px,2vw,19px);max-width:62ch}
.center{text-align:center;margin-inline:auto}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:16px;
  padding:14px 26px;border-radius:var(--radius-sm);transition:transform .12s ease,box-shadow .12s ease;border:1px solid transparent}
.btn-primary{color:#fff;background:linear-gradient(135deg,var(--accent-soft),var(--accent-deep));
  box-shadow:0 10px 24px rgba(217,119,87,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(217,119,87,.4)}
.btn-ghost{color:var(--ink);background:var(--surface);border-color:var(--hairline)}
.btn-ghost:hover{transform:translateY(-2px)}

/* Header */
header.site{position:sticky;top:0;z-index:50;backdrop-filter:saturate(150%) blur(12px);
  background:color-mix(in srgb,var(--canvas) 82%,transparent);border-bottom:1px solid var(--hairline)}
.nav{display:flex;align-items:center;gap:18px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:22px;font-weight:700}
.brand img{width:32px;height:32px;border-radius:8px}
.nav .links{display:flex;gap:22px;margin-left:auto}
.nav .links a{color:var(--ink-2);font-size:15px;font-weight:500}
.nav .links a:hover{color:var(--ink)}
.nav .cta{margin-left:8px}
.lang{margin-left:8px;background:var(--surface);border:1px solid var(--hairline);border-radius:10px;
  color:var(--ink);padding:8px 10px;font-size:13px;max-width:150px}
@media(max-width:860px){.nav .links{display:none}.lang{max-width:120px}}

/* Hero */
.hero{padding:84px 0 64px;text-align:center}
.hero .badge{display:inline-block;font-size:13px;font-weight:600;color:var(--accent-deep);
  background:color-mix(in srgb,var(--accent) 14%,transparent);padding:7px 14px;border-radius:999px;margin-bottom:22px}
.hero h1{font-size:clamp(38px,6.5vw,76px);max-width:16ch;margin:0 auto 18px}
.hero .lead{margin:0 auto 30px;font-size:clamp(17px,2.2vw,21px)}
.hero .cta-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero .note{margin-top:18px;color:var(--ink-2);font-size:14px}
.hero-art{margin:48px auto 0;width:148px;height:148px}
.hero-art img{width:100%;border-radius:32px;box-shadow:0 30px 60px rgba(189,93,58,.28)}

/* Stat strip */
.stat-strip{background:var(--surface);border-block:1px solid var(--hairline);padding:54px 0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-grid .v{font-family:var(--serif);font-size:clamp(30px,4vw,46px);font-weight:700;color:var(--accent-deep)}
.stat-grid .l{color:var(--ink-2);font-size:14px;margin-top:6px}
.stat-grid .s{color:var(--ink-2);opacity:.7;font-size:12px;margin-top:8px}
.stat-grid a{color:var(--accent-deep);text-decoration:underline}
@media(max-width:780px){.stat-grid{grid-template-columns:repeat(2,1fr)}}

/* Science cards */
.sci-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:42px}
.sci-card{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius);
  padding:26px;box-shadow:0 8px 22px rgba(0,0,0,.04)}
.sci-card h3{margin-bottom:10px}
.sci-card p{color:var(--ink-2);font-size:15px}
.sci-card .src{display:block;margin-top:14px;font-size:12.5px;color:var(--accent-deep);font-weight:600}
@media(max-width:900px){.sci-grid{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.sci-grid{grid-template-columns:1fr}}

/* Features */
.feat-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:42px}
.feature{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius);padding:28px}
.feat-icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(135deg,var(--accent-soft),var(--accent-deep));color:#fff}
.feat-icon svg{width:26px;height:26px}
.feature h3{margin-bottom:8px}
.feature p{color:var(--ink-2);font-size:15px}
@media(max-width:760px){.feat-grid{grid-template-columns:1fr}}

/* How it works */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:42px}
.step{text-align:center;padding:10px}
.step-number{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;margin:0 auto 16px;
  font-family:var(--serif);font-weight:700;font-size:22px;color:#fff;background:linear-gradient(135deg,var(--accent-soft),var(--accent-deep))}
.step p{color:var(--ink-2);font-size:15px;margin-top:6px}
@media(max-width:760px){.steps{grid-template-columns:1fr}}

/* Compliance */
.comp{background:var(--surface);border-block:1px solid var(--hairline)}
.comp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:38px}
.comp-card{border:1px solid var(--hairline);border-radius:var(--radius);padding:24px;background:var(--surface-2)}
.comp-card h3{font-size:18px;margin-bottom:8px}
.comp-card p{color:var(--ink-2);font-size:14.5px}
@media(max-width:820px){.comp-grid{grid-template-columns:1fr}}

/* References */
.refs ul{list-style:none;margin-top:24px;display:grid;gap:12px;max-width:80ch}
.refs li{padding-left:22px;position:relative;color:var(--ink-2)}
.refs li::before{content:"→";position:absolute;left:0;color:var(--accent)}
.refs a{color:var(--accent-deep);text-decoration:underline}

/* FAQ */
.faq{max-width:820px;margin-inline:auto}
.faq-item{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius-sm);
  margin-top:12px;padding:4px 20px}
.faq-item summary{cursor:pointer;font-weight:600;padding:16px 0;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq-item summary::after{content:"+";color:var(--accent);font-size:22px;line-height:1}
.faq-item[open] summary::after{content:"–"}
.faq-item p{color:var(--ink-2);padding:0 0 18px;font-size:15px}

/* Final CTA */
.final{text-align:center}
.final-card{background:linear-gradient(135deg,var(--accent-soft),var(--accent-deep));color:#fff;
  border-radius:32px;padding:64px 32px;box-shadow:0 30px 60px rgba(189,93,58,.3)}
.final-card h2{color:#fff}
.final-card p{color:rgba(255,255,255,.92);max-width:52ch;margin:12px auto 26px}
.final-card .btn-primary{background:#fff;color:var(--accent-deep);box-shadow:0 10px 24px rgba(0,0,0,.18)}

/* Footer */
footer.site{border-top:1px solid var(--hairline);padding:54px 0;color:var(--ink-2);font-size:14px}
footer .top{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:flex-start}
footer .brand{color:var(--ink);margin-bottom:8px}
footer .flinks{display:flex;gap:20px;flex-wrap:wrap}
footer .flinks a:hover{color:var(--ink)}
footer .disc{margin-top:24px;font-size:12.5px;opacity:.8;max-width:90ch}

/* Legal pages */
.legal-hero{padding:64px 0 24px}
.legal-body{max-width:760px;margin-inline:auto;padding-bottom:80px}
.legal-section{margin-top:28px}
.legal-section h2{font-size:22px;margin-bottom:8px}
.legal-section p{color:var(--ink-2)}
.legal-updated{color:var(--ink-2);font-size:14px;margin-top:6px}

/* Reveal animation */
[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
[data-reveal].in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){[data-reveal]{opacity:1;transform:none;transition:none}}