:root{
  --navy:#16324f; --navy-deep:#0c1f33; --ink:#1c2733; --steel:#4a7fb5;
  --paper:#f6f8fa; --card:#ffffff; --line:#dbe3ea; --mut:#66788a;
  --ok:#1e7f4f; --warn:#b7791f; --bad:#b3352c;
  --mono:"SF Mono",Consolas,"Liberation Mono",monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;background:var(--paper);color:var(--ink);font-size:15px;line-height:1.55}
button{font:inherit;cursor:pointer}
input,select,textarea{font:inherit}
.hidden{display:none!important}
.topbar{background:var(--navy-deep);color:#fff;padding:14px 26px;display:flex;align-items:center;gap:14px}
.logo{display:flex;align-items:center;gap:10px}
.logo svg{display:block}
.logo .wm{font-weight:700;letter-spacing:.14em;font-size:13px}
.logo .sub{font-size:11px;color:#9db4cc;letter-spacing:.06em}
.topbar .right{margin-left:auto;font-size:12px;color:#9db4cc}
.wrap{max-width:880px;margin:0 auto;padding:34px 22px 60px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:28px;box-shadow:0 1px 3px rgba(12,31,51,.06)}
h1{font-size:24px;color:var(--navy);letter-spacing:-.01em}
h2{font-size:18px;color:var(--navy);margin-bottom:12px}
h3{font-size:15px;color:var(--navy)}
.mut{color:var(--mut)}
.small{font-size:12.5px}
.mt{margin-top:16px}.mt2{margin-top:26px}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.grow{flex:1 1 220px}
label.fld{display:block;font-size:12.5px;font-weight:600;color:var(--navy);margin:14px 0 5px;letter-spacing:.03em;text-transform:uppercase}
input[type=text],input[type=password],input[type=number],select,textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:7px;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus,button:focus-visible{outline:2px solid var(--steel);outline-offset:1px}
.btn{background:var(--navy);color:#fff;border:none;border-radius:7px;padding:11px 20px;font-weight:600}
.btn:hover{background:#1d4066}
.btn.ghost{background:transparent;color:var(--navy);border:1px solid var(--line)}
.btn.ghost:hover{border-color:var(--navy)}
.btn.danger{background:var(--bad)}
.btn.sm{padding:6px 12px;font-size:13px}
.notice{border-left:3px solid var(--steel);background:#eef4fa;padding:12px 14px;border-radius:0 7px 7px 0;font-size:13.5px}
.notice.bad{border-color:var(--bad);background:#fbeeed}
.notice.ok{border-color:var(--ok);background:#ecf6f0}
.pill{display:inline-block;padding:2px 10px;border-radius:20px;font-size:11.5px;font-weight:600;letter-spacing:.03em}
.pill.ok{background:#e2f2e9;color:var(--ok)}
.pill.bad{background:#f9e4e2;color:var(--bad)}
.pill.mut{background:#eceff2;color:var(--mut)}
.pill.warn{background:#faf0dc;color:var(--warn)}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th{background:#f0f4f8;color:var(--navy);text-align:left;padding:9px 10px;font-size:11.5px;letter-spacing:.05em;text-transform:uppercase;border-bottom:1px solid var(--line)}
td{padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
tr:hover td{background:#f8fafc}
.tabs{display:flex;gap:4px;border-bottom:2px solid var(--line);margin-bottom:22px;flex-wrap:wrap}
.tab{background:none;border:none;padding:10px 18px;font-weight:600;color:var(--mut);border-bottom:3px solid transparent;margin-bottom:-2px}
.tab.on{color:var(--navy);border-bottom-color:var(--navy)}
.keycode{font-family:var(--mono);font-size:14px;letter-spacing:.05em}
.big-key{font-family:var(--mono);font-size:22px;letter-spacing:.12em;background:var(--navy-deep);color:#dff0ff;padding:14px 20px;border-radius:8px;text-align:center;user-select:all}
body.exam-mode{background:var(--navy-deep)}
.exam-shell{max-width:820px;margin:0 auto;padding:26px 20px 50px;color:#e8eef4}
.exam-head{display:flex;align-items:center;gap:18px;margin-bottom:22px}
.exam-head .qcount{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:#9db4cc}
.exam-head .qcount b{color:#fff;font-size:15px}
.exam-head .certname{font-size:11px;color:#7f9ab5;letter-spacing:.06em;margin-top:2px}
.secband{font-size:11.5px;color:#7f9ab5;letter-spacing:.06em;margin-bottom:8px;text-transform:uppercase}
.qtext{font-size:19px;line-height:1.5;color:#fff;font-weight:600;margin-bottom:22px}
.opt{display:flex;gap:14px;align-items:flex-start;width:100%;text-align:left;background:#122a44;border:1px solid #24466b;color:#dbe6f0;border-radius:9px;padding:14px 16px;margin-bottom:10px;transition:border-color .12s,background .12s}
.opt:hover{border-color:var(--steel);background:#16334f}
.opt.sel{border-color:#7db3e8;background:#1a3d61;color:#fff}
.opt .lt{font-weight:700;color:#8fb8de;min-width:20px}
.opt.sel .lt{color:#bde0ff}
.exam-foot{display:flex;align-items:center;margin-top:26px}
.exam-foot .btn{margin-left:auto;background:var(--steel)}
.exam-foot .btn:hover{background:#5b90c6}
.exam-foot .btn:disabled{opacity:.4;cursor:not-allowed}
.ring{position:relative;width:78px;height:78px;flex:none}
.ring svg{transform:rotate(-90deg)}
.ring .t{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:19px;font-weight:700;color:#fff}
.ring.low .t{color:#ffb3ac}
.gprog{height:4px;background:#1b3a5c;border-radius:2px;overflow:hidden;flex:1}
.gprog i{display:block;height:100%;background:var(--steel);transition:width .3s}
.sec-strip{display:flex;gap:8px;align-items:center;margin-top:34px;font-size:11.5px;color:#6f8aa6}
.sec-strip .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);animation:pulse 2s infinite}
@keyframes pulse{50%{opacity:.35}}
@media (prefers-reduced-motion:reduce){.sec-strip .dot{animation:none}}
.detail-q{border:1px solid var(--line);border-radius:8px;padding:12px 14px;margin-bottom:10px;font-size:13.5px}
.detail-q.good{border-left:4px solid var(--ok)}
.detail-q.miss{border-left:4px solid var(--bad)}
.modal-bg{position:fixed;inset:0;background:rgba(12,31,51,.55);display:flex;align-items:flex-start;justify-content:center;padding:40px 16px;overflow:auto;z-index:50}
.modal{background:#fff;border-radius:10px;max-width:760px;width:100%;padding:26px}
@media(max-width:600px){.wrap{padding:20px 12px}.card{padding:18px}.qtext{font-size:17px}}

/* ---- SaaS ---- */
.kpi{display:flex;gap:14px;flex-wrap:wrap}
.kpi .box{flex:1 1 150px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px 18px}
.kpi .box .n{font-size:26px;font-weight:800;color:var(--navy)}
.kpi .box .l{font-size:11.5px;color:var(--mut);letter-spacing:.04em;text-transform:uppercase;margin-top:2px}
.kpi .box.credit{background:var(--navy-deep)}
.kpi .box.credit .n{color:#7db3e8}
.kpi .box.credit .l{color:#9db4cc}
.delta-pos{color:var(--ok);font-weight:700}
.delta-neg{color:var(--bad);font-weight:700}