:root{
  --navy:#001542;--navy2:#002875;--ink:#18202b;--muted:#5d6672;--line:#dfe5ec;
  --soft:#f5f7fa;--blue:#0088d1;--gold:#c9a84c;--green:#247a4b;--red:#a53b34;
  --code:#0a1020;--code-line:#1a3060;--code-blue:#7fa8d8;--max:1080px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:#fff;line-height:1.65}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
.site-header img{width:100%;height:auto;display:block;background:var(--navy)}
.site-nav{display:flex;align-items:center;justify-content:flex-end;border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:50}
.nav-links{display:flex;flex-wrap:wrap}.nav-links a{font-size:12px;color:#4e5864;padding:12px 17px;border-left:1px solid var(--line);letter-spacing:.055em;text-decoration:none;white-space:nowrap}.nav-links a:hover,.nav-links a.active{color:var(--navy);background:#f4f7fb}.nav-links a.active{box-shadow:inset 0 -3px 0 var(--gold)}
.nav-toggle{display:none;background:none;border:0;padding:13px 16px;cursor:pointer}.nav-toggle span{display:block;width:22px;height:2px;background:#3b4652;margin:4px 0}
.page{max-width:var(--max);margin:0 auto;padding:3.2rem 1.6rem 5rem}.narrow{max-width:860px}.eyebrow{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:#7b8490;margin-bottom:.7rem}.status-line{font-size:12px;color:#7a838e;margin:.25rem 0 1.3rem}.status-line strong{color:var(--navy)}
h1{font-size:48px;line-height:1.08;color:var(--navy);max-width:900px;margin-bottom:1.1rem}h2{font-size:28px;line-height:1.2;color:var(--navy);margin:2.8rem 0 .9rem}h3{font-size:19px;line-height:1.3;color:var(--navy);margin:1.8rem 0 .55rem}p{font-size:16px;color:#404955;margin-bottom:1.05rem}.lede{font-size:21px;line-height:1.62;color:#202934;max-width:900px;margin-bottom:2rem}.small{font-size:13px;color:#727b86}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr);gap:32px;align-items:start}.hero-card{background:linear-gradient(145deg,#07142d,#0d2859);color:#fff;border-radius:8px;padding:1.6rem;box-shadow:0 10px 28px rgba(0,21,66,.14)}.hero-card .kicker{font-size:10px;color:var(--gold);letter-spacing:.14em;text-transform:uppercase;margin-bottom:.8rem}.hero-card h2{color:#fff;margin:0 0 .8rem;font-size:23px}.hero-card p{color:#b7c8de;font-size:14px}.hero-card code{color:#fff}
.pull{border-left:4px solid var(--gold);background:#fffdf5;padding:1.1rem 1.45rem;margin:1.8rem 0;color:var(--navy);font-size:18px;line-height:1.65}
.rule{border:0;border-top:1px solid #e7ebef;margin:2.8rem 0}.section-intro{max-width:850px}
.grid-2,.grid-3,.grid-4{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:7px;overflow:hidden;margin:1.6rem 0 2rem}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;padding:1.35rem}.card.soft{background:#f8fafc}.card .label{font-size:10px;color:var(--gold);font-weight:700;letter-spacing:.12em;text-transform:uppercase;margin-bottom:.45rem}.card h3{margin:0 0 .45rem;font-size:17px}.card p{font-size:14px;line-height:1.6;margin:0;color:#56606d}
.tech-diagram{background:var(--code);border:1px solid var(--code-line);border-radius:7px;padding:1.45rem;margin:1.7rem 0;color:var(--code-blue);overflow:auto}.tech-diagram .title{font:700 11px Arial,sans-serif;color:var(--gold);letter-spacing:.12em;text-transform:uppercase;margin-bottom:1rem}.stack{display:grid;gap:8px;min-width:520px}.stack-row{display:grid;grid-template-columns:180px 1fr;border:1px solid #1c3768;background:#0d1931}.stack-name{padding:12px 14px;color:#fff;font:700 13px Arial,sans-serif;border-right:1px solid #1c3768}.stack-desc{padding:12px 14px;color:#91acd0;font:13px/1.5 monospace}.stack-arrow{text-align:center;color:var(--gold);font:18px monospace;height:24px}
.flow{display:flex;align-items:stretch;gap:10px;min-width:720px}.flow-box{flex:1;border:1px solid #294a7f;background:#0d1931;padding:14px;color:#fff;font:700 13px/1.35 Arial,sans-serif;text-align:center}.flow-box span{display:block;color:#7fa8d8;font:12px/1.45 Arial,sans-serif;font-weight:400;margin-top:6px}.flow-arrow{display:flex;align-items:center;color:var(--gold);font-size:22px}
/* Comparison panels are half-width: use a vertical flow so labels never collide or overflow. */
.compare .tech-diagram{overflow:hidden}
.compare .flow{min-width:0;display:grid;grid-template-columns:1fr;gap:6px}
.compare .flow-box{width:100%;min-width:0;overflow-wrap:anywhere}
.compare .flow-arrow{justify-content:center;min-height:24px;transform:rotate(90deg);transform-origin:center}

.badges{display:flex;gap:8px;flex-wrap:wrap;margin:.9rem 0 1.7rem}.badge{font-size:10px;letter-spacing:.08em;text-transform:uppercase;border-radius:999px;padding:5px 9px;border:1px solid}.qualified{color:#1e6940;border-color:#97c9ae;background:#f1fbf5}.activeq{color:#735900;border-color:#d8c16c;background:#fffbea}.v1{color:#135f87;border-color:#8fc8e1;background:#f2fbff}.research{color:#735073;border-color:#d5b9d5;background:#fff7ff}
.invariant{display:grid;grid-template-columns:1fr auto 1fr;gap:18px;align-items:center;margin:1.8rem 0;padding:1.4rem;border:1px solid #dbe3ed;border-radius:7px;background:#fafcff}.invariant .side{padding:1rem;text-align:center;font-weight:700;color:var(--navy)}.invariant .eq{font:700 30px monospace;color:var(--gold)}
.timeline{position:relative;margin:2rem 0;padding-left:28px}.timeline:before{content:"";position:absolute;left:8px;top:4px;bottom:4px;width:2px;background:#d8e0ea}.event{position:relative;margin:0 0 1.5rem}.event:before{content:"";position:absolute;left:-26px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--navy);border:3px solid #fff;box-shadow:0 0 0 1px #9fb0c5}.event .event-title{font-weight:700;color:var(--navy)}.event p{font-size:14px;margin:.25rem 0}
.compare{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:7px;overflow:hidden;margin:1.8rem 0}.compare>div{padding:1.4rem}.compare .left{background:#fafafa;border-right:1px solid var(--line)}.compare .right{background:#f5f9ff}.compare h3{margin:0 0 .8rem}.checklist{list-style:none}.checklist li{font-size:14px;color:#485260;margin:.5rem 0;padding-left:18px;position:relative}.checklist li:before{content:"—";position:absolute;left:0;color:var(--gold);font-weight:700}
.test-matrix{width:100%;border-collapse:collapse;margin:1.4rem 0 2rem;font-size:14px}.test-matrix th{text-align:left;background:#f2f5f9;color:var(--navy);padding:10px;border:1px solid #dce3eb;font-size:11px;letter-spacing:.06em;text-transform:uppercase}.test-matrix td{padding:10px;border:1px solid #e1e6ed;vertical-align:top;color:#4d5764}.test-matrix td:first-child{font-weight:700;color:#24364f}.state{font-size:10px;text-transform:uppercase;letter-spacing:.06em;font-weight:700;white-space:nowrap}.state.q{color:#1e6940}.state.a{color:#7a6200}.state.v{color:#126489}
.quote{font-size:27px;line-height:1.35;color:var(--navy);font-weight:700;margin:2.4rem 0;max-width:900px}.quote em{color:var(--gold);font-style:normal}
.footer{border-top:1px solid var(--line);background:#f7f9fb}.footer-inner{max-width:var(--max);margin:auto;padding:2rem 1.6rem;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.footer p,.footer a{font-size:12px;color:#6c7580}.footer strong{color:var(--navy)}
@media(max-width:850px){.hero-grid{grid-template-columns:1fr}.grid-4{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:1fr}.nav-links a{padding:12px 11px;font-size:11px}h1{font-size:40px}}
@media(max-width:650px){.page{padding:2.2rem 1.1rem 4rem}h1{font-size:34px}.lede{font-size:18px}.grid-2,.grid-4,.compare{grid-template-columns:1fr}.compare .left{border-right:0;border-bottom:1px solid var(--line)}.invariant{grid-template-columns:1fr}.invariant .eq{transform:rotate(90deg)}.nav-toggle{display:block}.site-nav{justify-content:flex-end}.nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;box-shadow:0 7px 18px rgba(0,0,0,.08);border-bottom:1px solid var(--line);flex-direction:column}.nav-links.open{display:flex}.nav-links a{border-left:0;border-top:1px solid var(--line);font-size:13px;padding:13px 18px}}

/* Qualification snapshot / public test ledger */
.qualification-snapshot{margin-top:2.6rem}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:7px;overflow:hidden;margin:1.4rem 0 1.1rem}.stat-card{background:#fff;padding:1.35rem 1.2rem;min-width:0}.stat-card:nth-child(even){background:#f7f9fc}.stat-number{font-size:34px;line-height:1;font-weight:800;color:var(--navy);letter-spacing:-.03em}.stat-label{font-size:11px;line-height:1.35;text-transform:uppercase;letter-spacing:.09em;color:#8b6f1d;font-weight:800;margin:.55rem 0 .6rem}.stat-card p{font-size:13px;line-height:1.55;margin:0;color:#5d6875}.table-scroll{overflow-x:auto;margin:0 0 .5rem;-webkit-overflow-scrolling:touch}.table-scroll .test-matrix{min-width:760px}.ledger td:nth-child(3){min-width:210px}.question-matrix td:first-child{width:38%;color:var(--navy)}.operational-grid .card{min-height:190px}.test-matrix code{font-size:12px;background:#f1f4f8;padding:1px 4px;border-radius:3px;color:#24364f}
@media(max-width:900px){.stat-grid{grid-template-columns:1fr 1fr}}
@media(max-width:540px){.stat-grid{grid-template-columns:1fr}.stat-number{font-size:30px}}