*{box-sizing:border-box}body{margin:0;font:17px/1.55 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#1b2430;background:#fff}a{color:#0b5cab}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}.narrow{max-width:760px}.top{border-bottom:1px solid #e5e9f0}.top .wrap{display:flex;justify-content:space-between;align-items:center;height:64px;flex-wrap:wrap}
.logo{font-weight:800;text-decoration:none;color:#0b2545;display:flex;gap:8px;align-items:center}.logo i{width:22px;height:22px;border-radius:6px;background:#0b5cab;display:inline-block}
.nav a{margin-left:18px;text-decoration:none;color:#33415c;font-size:15px}.hero{background:linear-gradient(135deg,#0b2545,#0b5cab);color:#fff;padding:64px 0}.hero h1{font-size:44px;line-height:1.1;margin:.2em 0;max-width:760px}
.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:13px;font-weight:700;color:#f4b400}.lead{font-size:19px;max-width:720px}.btn{display:inline-block;background:#f4b400;color:#0b2545;font-weight:700;padding:12px 22px;border-radius:10px;text-decoration:none;border:0;cursor:pointer;font-size:16px}.btn.big{font-size:18px;padding:15px 28px}
.small{font-size:14px;opacity:.8}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}.card{border:1px solid #e5e9f0;border-radius:14px;padding:22px;box-shadow:0 2px 8px #0b25450d}.price{font-size:32px;font-weight:800;color:#0b2545;margin:.2em 0}
.ticks{padding-left:1.2em}.ticks li{margin:.4em 0}details{border-bottom:1px solid #e5e9f0;padding:10px 0}summary{font-weight:600;cursor:pointer}
.q{border:1px solid #e5e9f0;border-radius:12px;padding:16px 18px;margin:18px 0}.q h3{margin:.2em 0 .8em;font-size:18px}.qn{font-size:13px;color:#5c677d;margin:0}.opt{display:block;width:100%;text-align:left;margin:6px 0;padding:10px 14px;border:1px solid #cfd8e3;border-radius:8px;background:#f8fafc;font-size:16px;cursor:pointer}
.opt.right{background:#e6f4ea;border-color:#34a853}.opt.wrong{background:#fdecea;border-color:#d93025}.ex{margin-top:10px;font-size:15px;background:#f4f7fb;padding:10px 12px;border-radius:8px}.cite{font-size:13px;color:#5c677d}
.result,.cta{background:#0b2545;color:#fff;border-radius:14px;padding:22px;margin:24px 0}.result a,.cta a.btn{color:#0b2545}.note{color:#b3261e;font-weight:600}
.foot{background:#0b2545;color:#c9d3e0;margin-top:60px;padding:30px 0;font-size:14px}.foot a{color:#fff}.disc{font-size:12.5px;opacity:.85}
@media(max-width:640px){.hero h1{font-size:32px}.nav a{margin-left:10px;font-size:14px}}
.appnav{background:#f4f7fb;padding:10px 14px;border-radius:10px;font-size:15px}.inp{padding:11px;font-size:16px;width:100%;max-width:360px;border:1px solid #cfd8e3;border-radius:8px;margin-right:8px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:20px 0}.stats div{background:#f4f7fb;border-radius:12px;padding:14px;text-align:center}.stats b{display:block;font-size:26px;color:#0b2545}.stats span{font-size:13px;color:#5c677d}
.tbl{width:100%;border-collapse:collapse;font-size:15px}.tbl td,.tbl th{border-bottom:1px solid #e5e9f0;padding:8px;text-align:left}.tbl tr.today{background:#fff8e1}
.bar{display:inline-block;width:120px;height:10px;background:#eef1f5;border-radius:5px;vertical-align:middle;overflow:hidden}.bar i{display:block;height:100%}
.btn.sm{padding:7px 12px;font-size:14px}.opt.sel{background:#e8f0fe;border-color:#0b5cab;font-weight:600}
.exambar{position:sticky;top:0;background:#0b2545;color:#fff;padding:10px 14px;border-radius:10px;display:flex;justify-content:space-between;align-items:center;z-index:5}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(34px,1fr));gap:4px;margin-top:14px}.grid a{display:block;text-align:center;padding:5px 0;border:1px solid #cfd8e3;border-radius:5px;font-size:12px;text-decoration:none;color:#33415c}.grid a.a{background:#e8f0fe}.grid a.c{border-color:#0b2545;border-width:2px}
.result.pass{background:#137333}.result.fail{background:#8c1d18}div.opt{cursor:default}
@media(max-width:640px){.stats{grid-template-columns:repeat(2,1fr)}}
.gauge{position:relative;height:14px;background:#ffffff33;border-radius:7px;margin:10px 0 14px}.gauge .bar{height:100%;background:#f4b400;border-radius:7px}.gauge .mark{position:absolute;left:75%;top:-5px;bottom:-5px;width:3px;background:#fff}.gauge .mark::after{content:'75% pass';position:absolute;top:-20px;left:-24px;font-size:12px;white-space:nowrap}
.weak{margin:0 0 12px}.sales{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:16px 0}.scard{position:relative;background:#fff;color:#0b2545;border-radius:14px;padding:20px}.scard.hot{outline:3px solid #f4b400}.scard .tag{position:absolute;top:-12px;left:16px;background:#f4b400;color:#0b2545;font-size:12px;font-weight:800;padding:3px 10px;border-radius:20px;text-transform:uppercase}.scard .btn{width:100%;text-align:center;box-sizing:border-box}
.formula{background:#f4f7fb;border-left:4px solid #0b5cab;padding:12px 16px;border-radius:8px;margin:12px 0}.formula code{font-size:16px}.calc{border:1px solid #e5e9f0;border-radius:14px;padding:18px;margin:18px 0}.calc input,.calc select{padding:9px;font-size:16px;margin:4px 0 10px;width:100%;box-sizing:border-box}.calc output{font-size:22px;font-weight:800;display:block}table.t{border-collapse:collapse;width:100%}table.t td,table.t th{border:1px solid #e5e9f0;padding:8px;text-align:left}