:root{--bg:#07111f;--panel:#0d1b2f;--panel2:#12243e;--line:#263d5d;--text:#f5f8ff;--muted:#9fb0c7;--blue:#2684ff;--cyan:#38d6d0;--green:#35d07f;--gold:#f3c86a;--danger:#ff657a}
*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,Segoe UI,Arial,sans-serif;background:radial-gradient(circle at top,#102b4f 0,#07111f 42%,#050b13 100%);color:var(--text);min-height:100vh}
a{color:inherit}.wrap{width:min(1120px,92%);margin:auto}.top{position:sticky;top:0;z-index:30;background:rgba(5,11,19,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}.brand{font-weight:900;letter-spacing:.6px;font-size:22px}.brand b{color:var(--blue)}
.langs{display:flex;gap:8px}.lang{border:1px solid var(--line);background:#0a1627;color:#fff;border-radius:10px;padding:9px 12px;cursor:pointer;font-weight:800}.lang.active{background:var(--blue);border-color:var(--blue)}
.hero{padding:76px 0 42px}.eyebrow{color:var(--cyan);font-size:12px;font-weight:900;letter-spacing:1.7px}.hero h1{font-size:clamp(38px,7vw,76px);line-height:.98;margin:12px 0 20px;max-width:900px}
.hero p{max-width:790px;color:var(--muted);font-size:18px;line-height:1.65}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.btn{border:0;border-radius:14px;padding:14px 20px;font-weight:900;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn.primary{background:linear-gradient(135deg,var(--blue),#2c5dff);color:white;box-shadow:0 14px 35px rgba(38,132,255,.28)}
.btn.secondary{background:#0c192a;border:1px solid var(--line);color:white}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:28px 0 58px}.card{background:linear-gradient(180deg,rgba(18,36,62,.95),rgba(10,22,38,.95));border:1px solid var(--line);border-radius:18px;padding:22px}.card h3{margin:8px 0 8px}.card p{color:var(--muted);font-size:14px;line-height:1.5}.pill{display:inline-flex;padding:6px 9px;border-radius:999px;background:rgba(56,214,208,.1);color:var(--cyan);font-size:11px;font-weight:900}
.section{padding:36px 0}.section h2{font-size:34px;margin:0 0 16px}.info{background:rgba(12,25,42,.78);border:1px solid var(--line);border-radius:18px;padding:24px;color:var(--muted);line-height:1.65}
.test-shell{padding:42px 0 70px}.test-head{display:flex;justify-content:space-between;align-items:end;gap:14px;flex-wrap:wrap}.progress{height:10px;background:#0b1727;border-radius:999px;overflow:hidden;border:1px solid var(--line);margin:18px 0 28px}.progress>div{height:100%;width:0;background:linear-gradient(90deg,var(--blue),var(--cyan))}
.qbox{background:rgba(13,27,47,.96);border:1px solid var(--line);border-radius:22px;padding:26px}.qnum{color:var(--cyan);font-size:12px;font-weight:900}.question{font-size:26px;line-height:1.3;margin:8px 0 22px}.options{display:grid;gap:11px}.opt{display:flex;gap:12px;align-items:flex-start;border:1px solid var(--line);border-radius:14px;padding:14px;background:#0a1627;cursor:pointer}.opt:hover{border-color:#3c6592}.opt input{margin-top:3px}
.controls{display:flex;justify-content:space-between;gap:10px;margin-top:18px}.hidden{display:none!important}.notice{border:1px solid var(--line);border-radius:14px;padding:14px;color:var(--muted);background:#0a1627}.good{color:var(--green)}.bad{color:var(--danger)}
.access{max-width:560px;margin:70px auto;background:rgba(13,27,47,.98);border:1px solid var(--line);border-radius:22px;padding:28px}.access input,.cert-form input{width:100%;padding:13px 14px;border-radius:12px;border:1px solid var(--line);background:#07111f;color:#fff;font-size:16px;margin:9px 0}
.result{max-width:760px;margin:44px auto;background:rgba(13,27,47,.98);border:1px solid var(--line);border-radius:22px;padding:30px;text-align:center}.score{font-size:72px;font-weight:950;color:var(--cyan)}
.certificate{width:min(1080px,96%);aspect-ratio:1.414/1;margin:28px auto;background:linear-gradient(135deg,#fafcff 0,#eef5ff 55%,#e5f4f8 100%);color:#0a1630;position:relative;border:12px solid #0b1f3c;box-shadow:0 25px 70px rgba(0,0,0,.35);padding:54px;overflow:hidden}
.certificate:before{content:"";position:absolute;width:360px;height:360px;border-radius:50%;background:linear-gradient(135deg,rgba(38,132,255,.18),rgba(56,214,208,.22));right:-110px;top:-120px}
.certificate:after{content:"";position:absolute;width:260px;height:260px;border:2px solid rgba(38,132,255,.15);transform:rotate(45deg);left:-150px;bottom:-130px}.cert-top{display:flex;justify-content:space-between;align-items:flex-start;position:relative;z-index:2}.cert-logo{font-size:28px;font-weight:950}.cert-logo b{color:#1668e8}.cert-type{font-size:12px;letter-spacing:2px;font-weight:900;color:#416181}.cert-main{text-align:center;margin-top:54px;position:relative;z-index:2}.cert-main h1{font-size:50px;letter-spacing:2px;margin:0}.cert-main .sub{color:#36516f;letter-spacing:1.5px;font-weight:800;margin-top:8px}.cert-main .name{font-family:Georgia,serif;font-size:48px;font-weight:700;margin:36px 0 12px;border-bottom:1px solid #9fb2ca;display:inline-block;padding:0 38px 8px}.cert-main .level{font-size:25px;font-weight:950;color:#135ecf;margin-top:18px}.cert-main .desc{max-width:760px;margin:14px auto;color:#4d627a;line-height:1.5}.cert-foot{display:flex;justify-content:space-between;align-items:end;position:absolute;left:54px;right:54px;bottom:42px;z-index:3}.cert-meta{font-size:12px;color:#52667c;line-height:1.7}.qr{width:108px;height:108px;background:white;border:1px solid #b7c6d8;padding:6px}.cert-disclaimer{position:absolute;left:50%;transform:translateX(-50%);bottom:12px;font-size:8px;color:#738397;width:80%;text-align:center;z-index:3}
@media(max-width:860px){.grid{grid-template-columns:1fr 1fr}.certificate{padding:30px}.cert-main{margin-top:25px}.cert-main h1{font-size:34px}.cert-main .name{font-size:32px}.cert-foot{left:30px;right:30px;bottom:30px}}
@media(max-width:560px){.grid{grid-template-columns:1fr}.hero{padding-top:44px}.question{font-size:21px}.certificate{aspect-ratio:auto;min-height:720px}.cert-foot{position:relative;left:auto;right:auto;bottom:auto;margin-top:45px}.qr{width:90px;height:90px}}
@media print{body{background:white}.top,.no-print{display:none!important}.certificate{box-shadow:none;margin:0;width:100%;border-width:8px;page-break-inside:avoid}}