/* ============================================================
   AUROLINK — shared stylesheet (single source of truth)
   Used by index.html, product.html, about.html.
   ============================================================ */
:root{
  --ink:#0c1a2b; --ink-2:#13263c; --ink-3:#0e2034;
  --slate:#33455b; --muted:#64748b;
  --line:#e6e9ef; --line-2:#eef1f6;
  --bg:#ffffff; --bg-soft:#f6f8fb;
  --gold:#b07d22; --gold-2:#c9952f; --gold-on-dark:#d8ad57; --steel:#2b6a86;
  --maxw:1100px; --r:14px; --r-sm:10px; --r-lg:20px;
  --shadow-sm:0 1px 2px rgba(12,26,43,.05);
  --shadow:0 1px 2px rgba(12,26,43,.04), 0 12px 30px -18px rgba(12,26,43,.28);
  --shadow-lg:0 1px 2px rgba(12,26,43,.05), 0 28px 60px -28px rgba(12,26,43,.40);
  --ease:cubic-bezier(.4,0,.2,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--slate);background:var(--bg);
  font-family:"Inter",system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;
  font-feature-settings:"kern" 1,"liga" 1,"calt" 1;text-rendering:optimizeLegibility;
}
h1,h2,h3{color:var(--ink);font-family:"Fraunces","Inter",Georgia,serif;font-weight:600;line-height:1.12;letter-spacing:-.01em;margin:0;text-wrap:balance}
p{margin:0 0 1rem}
a{color:var(--steel);text-decoration:none;transition:color .15s var(--ease)}
a:hover{text-decoration:underline}
::selection{background:rgba(176,125,34,.18);color:var(--ink)}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-radius:4px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{font-family:"Inter";font-weight:600;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);display:inline-flex;align-items:center;gap:.62em}
.eyebrow::before{content:"";width:18px;height:2px;background:currentColor;opacity:.55;border-radius:2px}
.muted{color:var(--muted)}
section{padding:84px 0;border-top:1px solid var(--line)}
section.alt{background:var(--bg-soft)}
section[id]{scroll-margin-top:84px}

/* nav */
header.nav{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.82);backdrop-filter:saturate(150%) blur(12px);-webkit-backdrop-filter:saturate(150%) blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:11px;font-family:"Inter";font-weight:700;letter-spacing:.16em;color:var(--ink);font-size:.95rem}
.brand:hover{text-decoration:none}
.brand svg{display:block;transition:transform .4s var(--ease)}
.brand:hover svg{transform:rotate(30deg)}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{color:var(--slate);font-size:.93rem;font-weight:500;position:relative}
.nav-links a:not(.nav-cta)::after{content:"";position:absolute;left:0;right:0;bottom:-5px;height:2px;background:var(--gold);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease)}
.nav-links a:not(.nav-cta):hover{color:var(--ink);text-decoration:none}
.nav-links a:not(.nav-cta):hover::after{transform:scaleX(1)}
.nav-cta{padding:9px 16px;border-radius:999px;background:var(--ink);color:#fff !important;font-size:.88rem;font-weight:600;transition:background .2s var(--ease),transform .15s var(--ease),box-shadow .2s var(--ease)}
.nav-cta:hover{background:var(--ink-2);text-decoration:none;transform:translateY(-1px);box-shadow:0 8px 18px -10px rgba(12,26,43,.6)}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:9px;padding:7px 9px;cursor:pointer}
.menu-btn span{display:block;width:20px;height:2px;background:var(--ink);margin:4px 0;border-radius:2px}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 22px;border-radius:999px;font-weight:600;font-size:.96rem;border:1px solid transparent;cursor:pointer;transition:transform .15s var(--ease),box-shadow .22s var(--ease),background .2s var(--ease),border-color .2s var(--ease)}
.btn:active{transform:translateY(0)}
.btn-primary{background:linear-gradient(180deg,var(--gold-2),var(--gold));color:#fff;box-shadow:0 6px 16px -8px rgba(176,125,34,.7)}
.btn-primary:hover{background:linear-gradient(180deg,#c08c2a,#9a6c1c);text-decoration:none;transform:translateY(-1px);box-shadow:0 12px 24px -8px rgba(176,125,34,.85)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.28);color:#fff}
.btn-ghost:hover{border-color:rgba(255,255,255,.6);background:rgba(255,255,255,.1);text-decoration:none;transform:translateY(-1px)}
.btn-dark{background:var(--ink);color:#fff;box-shadow:0 6px 16px -10px rgba(12,26,43,.7)}
.btn-dark:hover{background:var(--ink-2);text-decoration:none;transform:translateY(-1px);box-shadow:0 12px 24px -10px rgba(12,26,43,.8)}
.btn-line{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-line:hover{border-color:var(--ink);text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow)}

/* hero */
.hero{position:relative;overflow:hidden;color:#e8eef6;background:
   radial-gradient(900px 480px at 82% -12%, rgba(216,173,87,.20), transparent 58%),
   radial-gradient(720px 520px at 6% 112%, rgba(43,106,134,.18), transparent 60%),
   linear-gradient(180deg,#0b1828 0%, #0e2034 100%)}
.hero .wrap{position:relative;z-index:2;padding-top:96px;padding-bottom:104px}
.hero h1{color:#fff;font-size:clamp(2.2rem,5vw,3.5rem);max-width:15ch}
.hero .lead{color:#c3d0de;font-size:1.18rem;max-width:62ch;margin-top:22px}
.hero .cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.hero .eyebrow{color:var(--gold-on-dark)}
.lattice{position:absolute;inset:0;z-index:1;opacity:.55;
  -webkit-mask-image:radial-gradient(125% 120% at 80% 0%, #000 28%, transparent 74%);
          mask-image:radial-gradient(125% 120% at 80% 0%, #000 28%, transparent 74%)}
.hero-stats{display:flex;flex-wrap:wrap;gap:34px;margin-top:54px;padding-top:26px;border-top:1px solid rgba(255,255,255,.12)}
.hero-stats div{max-width:230px}
.hero-stats b{display:block;color:#fff;font-family:"Fraunces";font-weight:600;font-size:1.15rem;margin-bottom:2px}
.hero-stats span{color:#9fb0c2;font-size:.9rem}

/* generic layout helpers */
.lead-h2{font-size:clamp(1.7rem,3.4vw,2.4rem);max-width:24ch}
.section-intro{max-width:64ch;margin-top:16px;font-size:1.08rem}
.grid{display:grid;gap:22px}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-4{grid-template-columns:repeat(4,1fr)}
.cols-2{grid-template-columns:1.05fr .95fr;gap:48px;align-items:start}
.two-paths{grid-template-columns:1fr 1fr;gap:22px}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--shadow);transition:transform .2s var(--ease),box-shadow .25s var(--ease),border-color .2s var(--ease)}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#dfe4ec}
.card h3{font-size:1.18rem;margin-bottom:8px}
.card .ic{width:42px;height:42px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(176,125,34,.16),rgba(176,125,34,.05));box-shadow:inset 0 0 0 1px rgba(176,125,34,.2);color:var(--gold);margin-bottom:16px;transition:transform .2s var(--ease)}
.card:hover .ic{transform:scale(1.07)}
.card p{font-size:.97rem;margin:0}
.card .more{display:inline-block;margin-top:14px;font-weight:600;font-size:.92rem}
.card .more::after{content:"";display:inline-block}

/* services compact cards */
.svc{padding:22px}
.svc h3{font-size:1.05rem;margin-bottom:6px}
.svc p{font-size:.93rem}
.svc .ic{width:38px;height:38px;margin-bottom:13px}

/* steps */
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{position:relative;padding:26px;border:1px solid var(--line);border-radius:var(--r);background:#fff;transition:transform .2s var(--ease),box-shadow .25s var(--ease),border-color .2s var(--ease)}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#dfe4ec}
.step::before{counter-increment:step;content:"0" counter(step);font-family:"Fraunces";font-weight:600;font-size:1.05rem;color:var(--gold);display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,rgba(176,125,34,.18),rgba(176,125,34,.05));box-shadow:inset 0 0 0 1px rgba(176,125,34,.24);margin-bottom:14px}
.step h3{font-size:1.05rem;margin-bottom:6px}
.step p{font-size:.95rem;margin:0}

/* tiers */
.tier{position:relative;border:1px solid var(--line);border-radius:var(--r);padding:28px;background:#fff;display:flex;flex-direction:column;height:100%;transition:transform .2s var(--ease),box-shadow .25s var(--ease),border-color .2s var(--ease)}
.tier:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#dfe4ec}
.tier.feature{border-color:rgba(176,125,34,.5);box-shadow:0 16px 40px -24px rgba(176,125,34,.5);background:linear-gradient(180deg,#fffdf8,#ffffff)}
.tier.feature::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;border-radius:var(--r) var(--r) 0 0;background:linear-gradient(90deg,var(--gold-2),var(--gold))}
.tier .tag{font-size:.74rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--gold)}
.tier h3{font-size:1.18rem;margin:8px 0 4px}
.tier .form{font-size:.86rem;color:var(--muted);margin-bottom:14px}
.tier ul{list-style:none;padding:0;margin:0 0 18px;font-size:.94rem}
.tier li{padding-left:24px;position:relative;margin-bottom:9px}
.tier li::before{content:"";position:absolute;left:0;top:.5em;width:13px;height:13px;border-radius:50%;background:rgba(176,125,34,.16);box-shadow:inset 0 0 0 4px var(--gold)}

/* claims */
.claims{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.claims .col h3{font-size:1.05rem;display:flex;align-items:center;gap:9px;margin-bottom:14px}
.claims ul{list-style:none;padding:0;margin:0}
.claims li{padding:10px 0 10px 34px;position:relative;border-bottom:1px solid var(--line);font-size:.97rem}
.yes li::before,.no li::before{position:absolute;left:0;top:9px;width:21px;height:21px;border-radius:50%;display:grid;place-items:center;font-size:.78rem;font-weight:700}
.yes li::before{content:"\2713";color:#1f7a4d;background:rgba(31,122,77,.12)}
.no li::before{content:"\2715";color:#7c8a98;background:rgba(124,138,152,.14)}

/* about */
.about-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:start}
.fact{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--line)}
.fact:last-child{border-bottom:0}
.fact .k{min-width:128px;color:var(--muted);font-size:.88rem}
.fact .v{color:var(--ink);font-weight:500;font-size:.95rem}
.placeholder{background:rgba(176,125,34,.12);border-bottom:1px dashed var(--gold);padding:0 4px;border-radius:3px;color:#8a6212;font-style:normal}

/* contact */
.contact{background:
   radial-gradient(820px 420px at 50% -22%, rgba(216,173,87,.16), transparent 60%),
   linear-gradient(180deg,#0c1a2b,#0e2034);color:#dbe4ee;text-align:center;border-top:0}
.contact .eyebrow{justify-content:center}
.contact h2{color:#fff;font-size:clamp(1.8rem,3.6vw,2.6rem)}
.contact p{color:#b9c6d6;max-width:56ch;margin:14px auto 28px}
.contact .cta-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* footer */
footer{background:#08131f;color:#8fa0b3;padding:46px 0;font-size:.86rem}
footer .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:flex-start}
footer .brand{color:#fff;margin-bottom:10px}
footer a{color:#b9c6d6}

/* credibility band */
section.cred{padding:0;border-top:1px solid var(--line)}
.cred .wrap{display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:center;padding-top:18px;padding-bottom:18px}
.cred span{font-size:.86rem;color:var(--muted);font-weight:500;display:inline-flex;align-items:center;gap:11px}
.cred span::before{content:"";width:6px;height:6px;border-radius:1px;background:var(--gold);display:inline-block;transform:rotate(45deg)}
.cred span:first-child::before{display:none}

/* roadmap phases */
.phase{position:relative;padding:24px;border:1px solid var(--line);border-radius:var(--r);background:#fff;box-shadow:var(--shadow);transition:transform .2s var(--ease),box-shadow .25s var(--ease),border-color .2s var(--ease)}
.phase:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#dfe4ec}
.phase .when{font-size:.74rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--gold);margin-bottom:8px;display:block}
.phase h3{font-size:1.08rem;margin-bottom:6px}
.phase p{font-size:.95rem;margin:0}

/* prose (product / about long-form) */
.prose p{max-width:70ch}
.prose h3{margin:26px 0 8px}
.note{font-size:.9rem;color:var(--muted);font-style:italic}

/* scroll reveal — opacity-only fade, gated on html.js so content is always
   visible without JS. The transition list also carries transform/shadow/border
   so elements that are BOTH a component and a .reveal keep their snappy hover. */
html.js .reveal{opacity:0;transition:opacity .55s var(--ease),transform .2s var(--ease),box-shadow .25s var(--ease),border-color .2s var(--ease)}
html.js .reveal.in{opacity:1}
html.js .grid>.reveal:nth-child(2){transition-delay:.08s,0s,0s,0s}
html.js .grid>.reveal:nth-child(3){transition-delay:.16s,0s,0s,0s}
html.js .grid>.reveal:nth-child(4){transition-delay:.24s,0s,0s,0s}

@media (max-width:1000px){
  .cols-4{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .nav-links{display:none}
  .menu-btn{display:block}
  .nav-links.open{display:flex;position:absolute;top:66px;left:0;right:0;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 24px 16px}
  .nav-links.open a{padding:11px 0;border-bottom:1px solid var(--line)}
  .nav-links.open a:not(.nav-cta)::after{display:none}
  .nav-links.open .nav-cta{margin-top:10px;text-align:center}
  .cols-2,.about-grid,.two-paths{grid-template-columns:1fr;gap:30px}
  .cols-3,.cols-4,.steps{grid-template-columns:1fr}
  .claims{grid-template-columns:1fr;gap:20px}
  section{padding:60px 0}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html.js .reveal{opacity:1 !important;transform:none !important}
}