:root{
  --bg:#ffffff;--bg-soft:#f5f7fb;--ink:#14213d;--ink-2:#4a5a74;--muted:#6b7890;--line:#e3e8f0;
  --primary:#1947c6;--primary-ink:#ffffff;--primary-soft:#eaf0fd;--ok:#1f6b43;--ok-soft:#e6f5ec;--warn:#8a5a00;--warn-soft:#fff4dc;
  --radius:12px;--shadow:0 18px 40px #14213d14;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0e1524;--bg-soft:#131c2e;--ink:#e8edf6;--ink-2:#b4bfd2;--muted:#8f9bb2;--line:#243049;
  --primary:#6f95ff;--primary-ink:#0b1220;--primary-soft:#1a2745;--ok:#7fd3a4;--ok-soft:#15301f;--warn:#f0c46c;--warn-soft:#33280f;--shadow:0 18px 40px #00000059;
}}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--font);-webkit-font-smoothing:antialiased}
a{color:var(--primary)}
h1,h2,h3{line-height:1.2;margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:clamp(2rem,4.6vw,3.25rem);font-weight:750}
h2{font-size:clamp(1.5rem,3vw,2rem);font-weight:700}
h3{font-size:1.05rem;font-weight:650}
p{margin:0 0 1em}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:8px;background:var(--primary);color:var(--primary-ink);padding:8px 12px;border-radius:8px;z-index:10}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--primary);outline-offset:3px}

.nav{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:750;font-size:1.1rem;letter-spacing:-.04em;text-decoration:none}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:8px;background:var(--primary);color:var(--primary-ink);font:700 .8rem var(--mono)}
.dot{color:var(--primary)}
.nav nav{display:flex;align-items:center;gap:22px}
.nav nav a:not(.btn){color:var(--ink-2);text-decoration:none;font-size:.95rem}
.nav nav a:not(.btn):hover{color:var(--ink)}

.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:10px;background:var(--primary);color:var(--primary-ink);font-weight:650;text-decoration:none;border:1px solid var(--primary);transition:filter .15s,transform .15s}
.btn:hover{filter:brightness(1.08)}
.btn:active{transform:translateY(1px)}
.btn-secondary{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-secondary:hover{background:var(--bg-soft);filter:none}
.btn-small{min-height:38px;padding:0 16px;font-size:.92rem}

.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;padding-top:72px;padding-bottom:80px}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:650;letter-spacing:.06em;text-transform:uppercase;color:var(--primary);background:var(--primary-soft);padding:5px 10px;border-radius:999px;margin-bottom:18px}
.lede{font-size:1.15rem;color:var(--ink-2);max-width:36em}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 14px}
.cta.center{justify-content:center}
.hint{font-size:.9rem;color:var(--muted);max-width:34em}

.mock{margin:0;border:1px solid var(--line);border-radius:16px;background:var(--bg);box-shadow:var(--shadow);overflow:hidden}
.mock-bar{display:flex;align-items:center;gap:6px;padding:12px 14px;border-bottom:1px solid var(--line);background:var(--bg-soft)}
.mock-bar span{width:10px;height:10px;border-radius:50%;background:var(--line)}
.mock-bar em{margin-left:10px;font-style:normal;font-size:.8rem;color:var(--muted)}
.mock-body{display:grid;grid-template-columns:1fr 1.15fr}
.mock-page{position:relative;padding:22px 18px;border-right:1px solid var(--line);background:repeating-linear-gradient(var(--bg) 0 27px,var(--line) 27px 28px)}
.mock-page i{display:block;height:6px;border-radius:3px;background:var(--muted);opacity:.35;margin:0 0 22px}
.mock-page i.eq{background:var(--primary);opacity:.35}
.mock-page .mark{display:inline-block;font:italic 600 .95rem Georgia,serif;color:var(--ink);margin:-6px 0 18px;padding:2px 6px;border:2px solid var(--primary);border-radius:6px}
.mock-rubric{padding:16px}
.mock-q{display:flex;gap:8px;align-items:baseline;font-size:.95rem;margin-bottom:10px}
.mock-q strong{font:600 .8rem var(--mono);color:var(--muted)}
.mock-q span{margin-left:auto;font-weight:700;color:var(--primary)}
.item{display:flex;align-items:center;gap:10px;font-size:.88rem;border:1px solid var(--line);border-radius:8px;padding:8px 10px;margin:0 0 6px}
.item code{min-width:28px;font:600 .8rem var(--mono);color:var(--ink-2)}
.item.on{border-color:var(--primary);background:var(--primary-soft)}
.item small{margin-left:auto;font-size:.7rem;font-weight:650;text-transform:uppercase;letter-spacing:.04em;color:var(--primary)}
.check{font-size:.8rem;border-radius:8px;padding:7px 10px;margin:8px 0 0}
.check.ok{background:var(--ok-soft);color:var(--ok)}
.check.wait{background:var(--warn-soft);color:var(--warn)}

.band{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:72px 0}
.steps{list-style:none;padding:0;margin:28px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.steps li{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.steps li span{display:inline-flex;width:30px;height:30px;align-items:center;justify-content:center;border-radius:8px;background:var(--primary-soft);color:var(--primary);font-weight:700;margin-bottom:12px}
.steps p,.grid p{color:var(--ink-2);font-size:.95rem;margin:0}

.features{padding-top:80px;padding-bottom:80px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}
.grid article{border:1px solid var(--line);border-radius:var(--radius);padding:22px}

.principles ul{list-style:none;padding:0;margin:20px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.principles li{color:var(--ink-2);font-size:.95rem}
.principles strong{display:block;color:var(--ink);margin-bottom:4px}

.closing{text-align:center;padding-top:80px;padding-bottom:88px}
.closing p{color:var(--ink-2)}

.footer{border-top:1px solid var(--line);padding:24px 0;font-size:.88rem;color:var(--ink-2)}
.footer-inner{display:flex;flex-wrap:wrap;gap:8px 24px;align-items:center}
.footer .muted{color:var(--muted);margin-left:auto}

@media (max-width:900px){
  .hero{grid-template-columns:1fr;gap:40px;padding-top:48px;padding-bottom:56px}
  .steps,.grid,.principles ul{grid-template-columns:1fr}
  .band{padding:56px 0}.features,.closing{padding-top:56px;padding-bottom:56px}
}
@media (max-width:560px){
  .nav nav a:not(.btn){display:none}
  .cta .btn{flex:1 1 100%}
  .mock-body{grid-template-columns:1fr}.mock-page{display:none}
  .footer .muted{margin-left:0}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}}