:root{
  --bg:#0f1720; --panel:#16212e; --panel2:#1d2b3a; --line:#2a3a4d;
  --ink:#eef4fb; --muted:#9fb2c6; --brand:#ffb020; --brand2:#ff8a00;
  --good:#27c093; --bad:#ff5d5d; --accent:#3a86ff;
  --radius:14px; --shadow:0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:radial-gradient(1200px 600px at 70% -10%,#1b2a3b,transparent),var(--bg);
  color:var(--ink);line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--brand);text-decoration:none}
.wrap{max-width:980px;margin:0 auto;padding:0 20px}
.hidden{display:none!important}

/* header */
header{position:sticky;top:0;z-index:30;background:rgba(15,23,32,.85);backdrop-filter:blur(10px)}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px;gap:14px}
.nav-ctrls{display:flex;gap:10px;align-items:center}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;cursor:pointer;white-space:nowrap;flex-shrink:0}
.logo .badge{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#16110a;width:34px;height:34px;border-radius:9px;display:grid;place-items:center;font-size:18px;box-shadow:var(--shadow)}
.navlinks{display:flex;gap:6px;align-items:center}
.navlinks a{color:var(--muted);padding:8px 12px;border-radius:9px;font-weight:600;font-size:14px;cursor:pointer}
.navlinks a:hover,.navlinks a.active{color:var(--ink);background:var(--panel2)}
.state-sel{background:var(--panel2);border:1px solid var(--line);color:var(--ink);border-radius:9px;padding:8px 10px;font-weight:600;font-size:13px;cursor:pointer}
.pro-chip{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#16110a;font-weight:800;font-size:12px;padding:5px 10px;border-radius:999px}
@media(max-width:720px){.navlinks{display:none}}

/* hero */
.hero{padding:54px 0 22px;text-align:center}
.pill{display:inline-block;background:var(--panel2);border:1px solid var(--line);color:var(--muted);padding:6px 13px;border-radius:999px;font-size:13px;font-weight:600;margin-bottom:18px}
h1{font-size:44px;line-height:1.08;margin:.2em 0;font-weight:850;letter-spacing:-.5px}
h1 .hl{background:linear-gradient(135deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.sub{color:var(--muted);font-size:18px;max-width:640px;margin:14px auto 26px}
.cta{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#16110a;border:none;font-weight:800;font-size:17px;padding:15px 30px;border-radius:12px;cursor:pointer;box-shadow:var(--shadow)}
.cta:hover{transform:translateY(-1px)}
.cta.sm{padding:11px 20px;font-size:15px}
.trust{display:flex;gap:26px;justify-content:center;flex-wrap:wrap;margin-top:24px;color:var(--muted);font-size:14px}
.trust b{color:var(--ink)}

section{padding:30px 0}
.h2{font-size:27px;font-weight:800;margin:0 0 6px}
.lead{color:var(--muted);margin:0 0 22px;max-width:680px}

/* cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(258px,1fr));gap:16px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px;position:relative;transition:.15s;display:flex;flex-direction:column}
.card:hover{border-color:#3a4b60;transform:translateY(-2px)}
.card .ico{font-size:26px;margin-bottom:8px}
.card h3{margin:0 0 4px;font-size:18px}
.card p{margin:0 0 16px;color:var(--muted);font-size:14px;flex:1}
.card .meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);margin-bottom:14px}
.best{color:var(--good);font-weight:700}
.row-btns{display:flex;gap:8px}
.btn{flex:1;border:none;border-radius:10px;padding:11px;font-weight:700;cursor:pointer;font-size:14px}
.btn-go{background:var(--accent);color:#fff}
.btn-go:hover{filter:brightness(1.08)}
.btn-ghost{background:var(--panel2);color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand)}
.btn-lock{background:var(--panel2);color:var(--muted);border:1px solid var(--line)}
.locktag{position:absolute;top:14px;right:14px;background:#23344a;border:1px solid var(--line);color:var(--brand);font-size:11px;font-weight:700;padding:4px 9px;border-radius:999px}
.free-tag{position:absolute;top:14px;right:14px;background:rgba(39,192,147,.12);border:1px solid rgba(39,192,147,.35);color:var(--good);font-size:11px;font-weight:700;padding:4px 9px;border-radius:999px}

/* features / tips */
.feat{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.tip{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px}
.tip h4{margin:0 0 6px;font-size:16px}
.tip p{margin:0;color:var(--muted);font-size:14px}

/* simulator banner */
.banner{background:linear-gradient(135deg,#1d2b3a,#16212e);border:1px solid var(--line);border-radius:18px;padding:26px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.banner h3{margin:0 0 6px;font-size:22px}
.banner p{margin:0;color:var(--muted);max-width:520px}

/* quiz / views */
.view{padding:24px 0 60px}
.back{background:none;border:none;color:var(--muted);cursor:pointer;font-size:14px;font-weight:600;margin:20px 0 16px;padding:4px 2px}
.back:hover{color:var(--ink)}
.qcard{background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden;max-width:720px;margin:0 auto}
.qhead{display:flex;align-items:center;justify-content:space-between;padding:16px 22px;border-bottom:1px solid var(--line)}
.qhead .t{font-weight:800}
.timer{font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums}
.timer.warn{color:var(--bad)}
.x{background:none;border:none;color:var(--muted);font-size:26px;cursor:pointer;line-height:1}
.pbar{height:6px;background:var(--panel2)}
.pbar>i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand2));width:0;transition:.3s}
.qbody{padding:26px 24px}
.qnum{color:var(--muted);font-size:13px;font-weight:700;letter-spacing:.5px;text-transform:uppercase}
.qtext{font-size:21px;font-weight:700;margin:8px 0 18px}
.opt{display:block;width:100%;text-align:left;background:var(--panel2);border:1px solid var(--line);color:var(--ink);padding:14px 16px;border-radius:11px;margin-bottom:10px;cursor:pointer;font-size:15px;transition:.12s}
.opt:hover{border-color:var(--accent)}
.opt.correct{border-color:var(--good);background:rgba(39,192,147,.14)}
.opt.wrong{border-color:var(--bad);background:rgba(255,93,93,.12)}
.opt:disabled{cursor:default}
.explain{background:var(--panel2);border-left:3px solid var(--brand);border-radius:8px;padding:13px 15px;margin-top:6px;font-size:14px;color:var(--muted);display:none}
.explain.show{display:block}
.explain b{color:var(--ink)}
.qfoot{display:flex;justify-content:space-between;align-items:center;padding:16px 22px;border-top:1px solid var(--line)}
.score{color:var(--muted);font-size:14px}
.next{background:var(--brand);color:#16110a;border:none;font-weight:800;padding:11px 22px;border-radius:10px;cursor:pointer;font-size:15px}
.next:disabled{opacity:.4;cursor:default}

/* results */
.result{padding:36px 26px;text-align:center;max-width:560px;margin:0 auto}
.ring{font-size:58px;font-weight:850;margin:6px 0}
.ring.pass{color:var(--good)} .ring.fail{color:var(--bad)}
.result p{color:var(--muted)}
.result .row-btns{max-width:380px;margin:18px auto 0}
.review{margin-top:26px;text-align:left}
.review h4{margin:0 0 10px}
.rev-item{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-bottom:8px;font-size:14px}
.rev-item .qq{font-weight:700;margin-bottom:4px}
.rev-item .aa{color:var(--good)} .rev-item .yy{color:var(--bad)}

/* study guide */
.study{max-width:760px;margin:0 auto}
.study h2{font-size:30px}
.sg-block{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin-bottom:14px}
.sg-block h4{margin:0 0 8px;font-size:17px;color:var(--brand)}
.sg-block ul{margin:0;padding-left:18px;color:var(--muted)}
.sg-block li{margin:6px 0}
.sg-block b{color:var(--ink)}

/* faq */
.faq{max-width:760px;margin:0 auto}
.qa{border-bottom:1px solid var(--line);padding:16px 0}
.qa h4{margin:0 0 6px;font-size:17px}
.qa p{margin:0;color:var(--muted)}

/* paywall modal */
.modal{position:fixed;inset:0;background:rgba(8,12,17,.8);backdrop-filter:blur(4px);z-index:60;display:none;align-items:flex-start;justify-content:center;overflow-y:auto;padding:30px 16px}
.modal.show{display:flex}
.paywall{background:var(--panel);border:1px solid var(--line);border-radius:18px;max-width:460px;width:100%;box-shadow:var(--shadow);padding:30px 26px;text-align:center}
.paywall .lockico{font-size:42px}
.paywall h3{font-size:24px;margin:8px 0 4px}
.paywall ul{text-align:left;max-width:360px;margin:18px auto;padding:0;list-style:none}
.paywall li{padding:7px 0;color:var(--muted)}
.paywall li::before{content:"✓";color:var(--good);font-weight:800;margin-right:10px}
.price{font-size:36px;font-weight:850;margin:6px 0}
.price s{color:var(--muted);font-size:21px;font-weight:600;margin-right:8px}
.muted-note{color:var(--muted);font-size:12px;margin-top:12px}
.closex{float:right;background:none;border:none;color:var(--muted);font-size:24px;cursor:pointer;margin:-10px -8px 0 0}

footer{border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:13px;text-align:center;margin-top:30px}
footer a{color:var(--muted);text-decoration:underline}
@media(max-width:560px){
  h1{font-size:33px}.sub{font-size:16px}.qtext{font-size:18px}
  /* two-row header so the logo never collides with the controls */
  .nav{flex-wrap:wrap;height:auto;min-height:54px;padding:8px 0;row-gap:10px}
  .logo{flex-basis:100%;font-size:18px}
  .nav-ctrls{width:100%;justify-content:space-between}
  .state-sel{flex:1 1 auto;min-width:0;max-width:64%}
  .cta.sm{padding:9px 14px;font-size:14px;white-space:nowrap;flex-shrink:0}
  .wrap{padding:0 16px}
  .hero{padding:30px 0 18px}
  .h2{font-size:23px}
}