/* RN Test Prep – site styles. Change brand colors here. */
:root{
  --navy:#0f2a44; --navy-2:#173b5f; --teal:#0b7a75; --teal-2:#0a6662; --teal-50:#e8f5f4;
  --ink:#1b2733; --muted:#5a6b7b; --line:#dde5ec; --bg:#f6f9fb; --white:#fff;
  --warn-bg:#fff8e6; --warn-line:#f0c96a; --ok:#16794c; --bad:#b42318;
  --radius:14px; --shadow:0 6px 24px rgba(15,42,68,.08);
  --max:1120px;
  font-size:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%}
a{color:var(--teal-2)}
a:hover{color:var(--navy)}
h1,h2,h3,h4{color:var(--navy);line-height:1.2;margin:0 0 .6em}
h1{font-size:clamp(2rem,4.2vw,3.1rem);letter-spacing:-.02em}
h2{font-size:clamp(1.6rem,3vw,2.2rem);letter-spacing:-.01em}
h3{font-size:1.2rem}
p{margin:0 0 1em}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:0;background:var(--navy);color:#fff;padding:10px 14px;z-index:100}
.skip:focus{left:10px;top:10px}
:focus-visible{outline:3px solid #f5a524;outline-offset:2px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:saturate(1.4) blur(6px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy);font-weight:800;font-size:1.15rem;letter-spacing:-.01em}
.logo svg{width:34px;height:34px;flex:none}
.nav-links{display:flex;gap:4px;list-style:none;margin:0;padding:0;align-items:center}
.nav-links a{display:block;padding:8px 12px;border-radius:8px;text-decoration:none;color:var(--ink);font-weight:500}
.nav-links a:hover,.nav-links a[aria-current="page"]{background:var(--teal-50);color:var(--teal-2)}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 10px;font:inherit;cursor:pointer}
@media (max-width:860px){
  .nav-toggle{display:block}
  .nav-links{display:none;position:absolute;left:0;right:0;top:68px;background:#fff;flex-direction:column;align-items:stretch;padding:10px 20px 16px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 22px;border-radius:10px;font-weight:700;text-decoration:none;border:2px solid transparent;cursor:pointer;font:inherit;font-weight:700;transition:transform .08s ease,background .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:var(--teal-2);color:#fff}
.btn-outline{border-color:var(--teal);color:var(--teal-2);background:#fff}
.btn-outline:hover{background:var(--teal-50)}
.btn-light{background:#fff;color:var(--navy)}
.btn-sm{padding:8px 14px;font-size:.92rem}
.btn-block{width:100%}

/* hero */
.hero{background:radial-gradient(1200px 500px at 85% -10%,#1e5a7d 0,transparent 60%),linear-gradient(160deg,var(--navy) 0,#123a5a 100%);color:#e9f1f7;padding:76px 0 84px}
.hero h1{color:#fff}
.hero .lead{font-size:1.18rem;max-width:640px;color:#cfe0ec}
.hero-grid{display:grid;grid-template-columns:1.25fr .9fr;gap:48px;align-items:center}
.hero-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:26px}
.hero-card ul{margin:0;padding:0;list-style:none}
.hero-card li{display:flex;gap:10px;padding:8px 0;border-bottom:1px dashed rgba(255,255,255,.14)}
.hero-card li:last-child{border-bottom:0}
.check{color:#5fd3c4;font-weight:900;flex:none}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 14px}
.hero small{color:#a9c1d3}
.pill{display:inline-block;background:rgba(95,211,196,.15);color:#8fe6da;border:1px solid rgba(95,211,196,.35);border-radius:999px;padding:4px 12px;font-size:.85rem;font-weight:600;margin-bottom:14px}
@media (max-width:860px){.hero-grid{grid-template-columns:1fr}.hero{padding:52px 0 60px}}

/* sections */
section{padding:72px 0}
.section-alt{background:var(--bg)}
.section-head{max-width:720px;margin:0 auto 40px;text-align:center}
.section-head p{color:var(--muted);font-size:1.07rem}
.eyebrow{display:block;color:var(--teal);font-weight:700;letter-spacing:.08em;text-transform:uppercase;font-size:.8rem;margin-bottom:8px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media (max-width:960px){.grid-3,.grid-4{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.grid-3,.grid-2,.grid-4{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.product-card{display:flex;flex-direction:column}
.product-card .badge{align-self:flex-start;background:var(--teal-50);color:var(--teal-2);font-weight:700;font-size:.8rem;border-radius:999px;padding:4px 10px;margin-bottom:12px}
.product-card ul{padding-left:1.1em;color:var(--muted);margin:0 0 18px}
.product-card .price{font-size:2rem;font-weight:800;color:var(--navy);margin:auto 0 14px}
.product-card .price span:not(.price-label){font-size:.95rem;color:var(--muted);font-weight:500}
.product-card .actions{display:grid;gap:10px}
.feature .icon{width:46px;height:46px;border-radius:12px;background:var(--teal-50);color:var(--teal);display:grid;place-items:center;font-size:1.3rem;margin-bottom:12px}
.feature p{color:var(--muted);margin:0}
.steps{counter-reset:step;list-style:none;padding:0;margin:0}
.steps li{counter-increment:step;position:relative;padding-left:62px;margin-bottom:26px}
.steps li::before{content:counter(step);position:absolute;left:0;top:0;width:44px;height:44px;border-radius:50%;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:800}
.steps h3{margin-bottom:.25em}
.steps p{color:var(--muted);margin:0}

/* faq */
.faq details{border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:12px}
.faq summary{cursor:pointer;padding:16px 20px;font-weight:650;color:var(--navy);list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-weight:800;color:var(--teal)}
.faq details[open] summary::after{content:"–"}
.faq details>div{padding:0 20px 16px;color:var(--muted)}

/* placeholders & notices */
.placeholder{border:2px dashed #c4ced8;background:#fbfcfd;border-radius:var(--radius);padding:24px;color:var(--muted)}
.placeholder .tag{display:inline-block;background:#ffe9b3;color:#7a5200;font-weight:800;font-size:.75rem;padding:3px 8px;border-radius:6px;letter-spacing:.05em;margin-bottom:10px}
.notice{background:var(--warn-bg);border:1px solid var(--warn-line);border-left:6px solid #e0a10b;border-radius:12px;padding:18px 20px;color:#4a3b12}
.notice strong{color:#3a2c00}
.disclaimer-band{background:#0b2238;color:#c9d7e3;padding:26px 0;font-size:.93rem}
.disclaimer-band strong{color:#fff}

/* tables */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--navy);color:#fff;font-weight:650}
tr:nth-child(even) td{background:#fafcfd}
.facts th{background:var(--teal-50);color:var(--navy);width:30%}

/* product page */
.product-hero{background:linear-gradient(160deg,var(--navy),#123a5a);color:#dbe8f1;padding:60px 0}
.product-hero h1{color:#fff}
.buy-box{background:#fff;color:var(--ink);border-radius:var(--radius);padding:26px;box-shadow:0 18px 50px rgba(0,0,0,.25)}
.buy-box .price{font-size:2.6rem;font-weight:800;color:var(--navy);line-height:1}
.buy-box ul{padding-left:1.1em;margin:16px 0}
.buy-box small{color:var(--muted);display:block;margin-top:10px}
.kp h3{margin-top:1.2em}
.kp ul{margin:0;padding-left:1.2em}
.kp li{margin-bottom:.35em}

/* sample quiz */
.q{border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:20px;background:#fff}
.q .meta{font-size:.8rem;color:var(--teal-2);font-weight:700;text-transform:uppercase;letter-spacing:.05em}
.q .stem{font-weight:600;margin:.4em 0 .8em;color:var(--navy)}
.q fieldset{border:0;margin:0;padding:0}
.q legend{position:absolute;left:-9999px}
.opt{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border:1px solid var(--line);border-radius:10px;margin-bottom:8px;cursor:pointer}
.opt:hover{background:#f7fafc}
.opt input{margin-top:.3em}
.opt.correct{border-color:var(--ok);background:#eaf7f0}
.opt.incorrect{border-color:var(--bad);background:#fdeeee}
.q .result{font-weight:700;margin:.6em 0}
.q .result.ok{color:var(--ok)}
.q .result.no{color:var(--bad)}
.q details.answer{margin-top:10px;background:var(--bg);border-radius:10px;padding:10px 14px}
.q details.answer summary{cursor:pointer;font-weight:650;color:var(--teal-2)}
.score{position:sticky;bottom:12px;background:var(--navy);color:#fff;border-radius:12px;padding:12px 18px;display:inline-block;box-shadow:var(--shadow)}

/* prose pages */
.prose{max-width:780px}
.prose h2{margin-top:1.6em;font-size:1.5rem}
.prose ul{padding-left:1.2em}
.page-head{background:var(--bg);padding:48px 0;border-bottom:1px solid var(--line)}
.page-head p{color:var(--muted);max-width:720px;margin:0}

/* footer */
.site-footer{background:var(--navy);color:#b8cad9;padding:52px 0 28px;font-size:.95rem}
.site-footer a{color:#e3eef6;text-decoration:none}
.site-footer a:hover{text-decoration:underline}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:.7em}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin-bottom:6px}
.footer-legal{border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:20px;font-size:.84rem;color:#93a9bb}
@media (max-width:860px){.footer-grid{grid-template-columns:1fr 1fr}}
.center{text-align:center}.mt{margin-top:28px}.muted{color:var(--muted)}
.cta-band{background:linear-gradient(120deg,var(--teal),#0d5f7a);color:#fff;border-radius:20px;padding:44px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta-band h2{color:#fff;margin:0 0 .3em}
.cta-band p{margin:0;color:#dff3f1}
@media print{.site-header,.site-footer,.nav-toggle,.btn{display:none!important}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}