:root{
  --ink:#0f172a; --body:#334155; --muted:#64748b; --line:#e2e8f0;
  --bg:#ffffff; --alt:#f8fafc; --accent:#1e3a5f; --accent-2:#2c5282;
  --radius:14px; --max:1080px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--body);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.container{max-width:var(--max);margin:0 auto;padding:0 24px}
.narrow{max-width:820px}
.center{text-align:center}

/* header */
.site-header{position:sticky;top:0;background:rgba(255,255,255,.9);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line);z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{font-weight:600;color:var(--ink);letter-spacing:-.01em;display:inline-flex;align-items:center;gap:10px;font-size:1.05rem}
.mark{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:8px;background:var(--accent);color:#fff;font-size:.8rem;font-weight:700;letter-spacing:.02em}
.nav-links{display:flex;gap:28px;align-items:center;font-size:.95rem;color:var(--muted)}
.nav-links a:hover{color:var(--ink)}
.nav-cta{color:var(--accent)!important;font-weight:600}

/* hero */
.hero{padding:140px 0 130px}
.eyebrow{font-size:.8rem;text-transform:uppercase;letter-spacing:.14em;color:var(--muted);margin-bottom:22px;font-weight:600}
h1{font-size:clamp(2.3rem,5.2vw,4rem);line-height:1.08;letter-spacing:-.035em;color:var(--ink);font-weight:700;max-width:16ch}
.lede{font-size:1.25rem;color:var(--muted);margin:26px 0 40px;max-width:44ch}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:15px 30px;border-radius:999px;font-weight:600;transition:background .2s, transform .2s}
.btn:hover{background:var(--accent-2);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--accent)}
.btn-light:hover{background:#eef2f7}

/* sections */
.section{padding:110px 0}
.alt{background:var(--alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
h2{font-size:clamp(1.7rem,3vw,2.3rem);letter-spacing:-.025em;color:var(--ink);margin-bottom:18px;font-weight:700}
h3{color:var(--ink);font-size:1.1rem;letter-spacing:-.01em}
.sub{color:var(--muted);font-size:1.1rem;margin-bottom:48px}
.big{font-size:1.25rem;color:var(--body);margin-bottom:60px}

.pillars{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:40px;border-top:1px solid var(--line);padding-top:36px}
.pillars .num{display:block;font-size:.8rem;color:var(--muted);font-weight:600;margin-bottom:10px;letter-spacing:.08em}
.pillars p{color:var(--muted);margin-top:6px;font-size:.98rem}

/* cards */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:38px;display:flex;flex-direction:column;gap:12px;transition:border-color .2s, box-shadow .2s, transform .2s}
.card:hover{border-color:#cbd5e1;box-shadow:0 12px 30px -16px rgba(15,23,42,.25);transform:translateY(-2px)}
.card h3{font-size:1.4rem}
.card p{color:var(--muted)}
.tag{font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);font-weight:600}
.link{margin-top:auto;padding-top:14px;color:var(--accent);font-weight:600;font-size:.95rem}

/* how */
.how{display:grid;grid-template-columns:1fr 1fr;gap:72px;margin-top:40px}
.how-title{font-size:.85rem;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);margin-bottom:24px}
.steps{list-style:none;counter-reset:s}
.steps li{counter-increment:s;position:relative;padding:0 0 26px 56px;color:var(--muted)}
.steps li strong{display:block;color:var(--ink);font-weight:600;margin-bottom:2px}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:36px;height:36px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;font-size:.9rem;font-weight:600;color:var(--accent)}
.steps li:not(:last-child)::after{content:"";position:absolute;left:18px;top:42px;bottom:6px;width:1px;background:var(--line)}

/* cta band */
.cta-band{background:var(--accent);color:#fff}
.cta-band h2{color:#fff}
.light{color:#cbd5e1}
.cta-band .sub{margin:0 auto 36px;max-width:46ch}
.future{margin:48px auto 0;max-width:560px;text-align:left;border-top:1px solid rgba(255,255,255,.18);padding-top:18px}
.future summary{cursor:pointer;color:#cbd5e1;font-size:.95rem;list-style:none;text-align:center}
.future summary::-webkit-details-marker{display:none}
.future summary::after{content:" +";}
.future[open] summary::after{content:" –";}
.future p{color:#cbd5e1;margin-top:14px;font-size:.95rem;text-align:center}

/* footer */
.site-footer{padding:56px 0;border-top:1px solid var(--line)}
.foot{display:flex;justify-content:space-between;gap:32px;align-items:flex-start}
.foot-right{text-align:right;max-width:420px}
.foot-right a{color:var(--accent);font-weight:600}
.muted{color:var(--muted);font-size:.88rem;margin-top:8px}

/* responsive */
@media (max-width:820px){
  .nav-links a:not(.nav-cta){display:none}
  .hero{padding:88px 0 80px}
  .section{padding:76px 0}
  .pillars,.cards,.how{grid-template-columns:1fr}
  .pillars{gap:28px}
  .how{gap:36px}
  .card{padding:28px}
  .foot{flex-direction:column}
  .foot-right{text-align:left}
}