:root{--bg:#07101a;--bg2:#0b1624;--panel:#0f1b2b;--panel2:#15253a;--line:#27405f;--text:#edf3ff;--muted:#a9bbd8;--blue:#3e8bfd;--blue2:#76b2ff;--green:#1fbf75;--red:#d45867;--shadow:0 14px 36px rgba(0,0,0,.35)}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;background:radial-gradient(circle at top right, rgba(62,139,253,.10), transparent 20%),radial-gradient(circle at 10% 20%, rgba(118,178,255,.08), transparent 18%),linear-gradient(180deg,var(--bg) 0%, var(--bg2) 100%);color:var(--text)}
a{text-decoration:none;color:inherit}img{max-width:100%;display:block}.container{width:min(1260px, calc(100% - 32px));margin:0 auto}
.topbar{position:sticky;top:0;z-index:60;background:rgba(6,11,18,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.06)}
.nav{display:flex;gap:14px;align-items:center;justify-content:space-between;padding:14px 0}.brand{display:flex;gap:12px;align-items:center;font-weight:800}
.shield{width:42px;height:42px;display:grid;place-items:center;border-radius:14px;background:linear-gradient(135deg,#1a4f9f,var(--blue));box-shadow:var(--shadow)}
.nav-links{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.nav-links a,.btn{padding:10px 14px;border-radius:12px;border:1px solid var(--line);background:linear-gradient(180deg,var(--panel2),var(--panel));color:var(--text);white-space:nowrap}
.nav-links a:hover,.btn:hover{transform:translateY(-1px);border-color:#44658f}.btn{cursor:pointer}.btn-primary{background:linear-gradient(180deg,var(--blue),#2f74dd)}.btn-success{background:linear-gradient(180deg,#21c67b,#169d5f)}.btn-danger{background:linear-gradient(180deg,#de6472,#b84350)}.btn-ghost{background:transparent}
.page-header{padding:30px 0 22px}.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:20px;align-items:stretch}
.card{background:linear-gradient(180deg, rgba(18,30,49,.97), rgba(10,18,31,.99));border:1px solid rgba(255,255,255,.06);border-radius:22px;box-shadow:var(--shadow)}.panel-pad{padding:24px}.hero-card{padding:28px}
.kicker{display:inline-block;font-size:.82rem;text-transform:uppercase;letter-spacing:.12em;color:var(--blue2);margin-bottom:10px;font-weight:800}h1,h2,h3,h4{margin:0 0 12px}h1{font-size:clamp(2rem,4vw,3.2rem);line-height:1.08}p{color:var(--muted);line-height:1.64;margin:0 0 14px}
.grid{display:grid;gap:18px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.quick-grid{display:grid;gap:14px;grid-template-columns:repeat(4,1fr);margin-top:18px}
.mini{padding:16px;border-radius:18px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.05)}.mini strong{display:block;font-size:1.2rem;margin-bottom:4px}
.section-title{margin:28px 0 18px}.icon-card{display:flex;gap:14px;align-items:flex-start}.icon{min-width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg, rgba(62,139,253,.22), rgba(62,139,253,.06));border:1px solid rgba(62,139,253,.28)}
.list-clean{margin:0;padding-left:18px}.list-clean li{margin:8px 0}.callout{border-left:4px solid var(--blue);padding:14px 16px;background:rgba(62,139,253,.1);border-radius:14px}
.notice{padding:12px 14px;border-radius:14px;background:rgba(255,255,255,.04);color:var(--muted)}.statusbar{display:flex;flex-wrap:wrap;gap:12px;margin:18px 0}.status-pill{padding:10px 14px;border-radius:14px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06)}
.code-box{white-space:pre-wrap;font-family:ui-monospace,Consolas,monospace;background:#09111d;border:1px solid rgba(255,255,255,.08);padding:14px;border-radius:14px;color:#dde9ff}
.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;min-width:640px}th,td{text-align:left;padding:12px 14px;border-bottom:1px solid rgba(255,255,255,.06)}th{color:#dbe7fd}td{color:var(--muted)}
.banner-img{border-radius:22px;overflow:hidden;border:1px solid rgba(255,255,255,.06);box-shadow:var(--shadow);background:#0b1321}.banner-img img{width:100%;height:auto;object-fit:contain}
.auth-wrap{display:grid;grid-template-columns:1fr 1fr;gap:18px}.form-group{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}
input,select{width:100%;padding:14px;border-radius:14px;border:1px solid rgba(255,255,255,.08);background:#0b1321;color:var(--text);outline:none}
.exam-question{padding:20px}.answers{display:grid;gap:10px;margin-top:14px}.answer-btn{width:100%;text-align:left;padding:14px 16px;border-radius:14px;border:1px solid rgba(255,255,255,.08);background:#0c1422;color:var(--text);cursor:pointer}.answer-btn.selected{outline:2px solid rgba(118,178,255,.7);background:rgba(62,139,253,.18)}.answer-btn.correct{background:rgba(31,191,117,.18);border-color:rgba(31,191,117,.45)}.answer-btn.wrong{background:rgba(212,88,103,.18);border-color:rgba(212,88,103,.45)}
.progress{width:100%;height:12px;border-radius:999px;background:#0b1321;overflow:hidden;border:1px solid rgba(255,255,255,.06)}.progress>span{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--green))}
.result-box{padding:18px;border-radius:18px;margin-top:16px;border:1px solid rgba(255,255,255,.06)}.result-box.pass{background:rgba(31,191,117,.12)}.result-box.fail{background:rgba(212,88,103,.12)}
.split{display:flex;justify-content:space-between;align-items:center;gap:14px}.tag{display:inline-flex;gap:8px;align-items:center;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06)}
.footer{padding:24px 0 46px;color:var(--muted)}.module-actions{margin-top:14px;display:flex;gap:10px;flex-wrap:wrap}
@media (max-width:980px){.grid-2,.grid-3,.quick-grid,.auth-wrap,.hero{grid-template-columns:1fr}.nav{flex-direction:column;align-items:flex-start}}