:root{--paper: #fbfcfc;--surface: #ffffff;--surface-2: #f4f7f6;--ink: #122019;--ink-soft: #38473f;--muted: #6b7975;--line: #dde3e1;--line-strong: #c4cdc9;--accent: #0e6e63;--accent-ink: #0a4e46;--accent-wash: #e6f1ef;--validated: #1a7f5a;--validated-wash: #e7f2ec;--pending: #946618;--pending-wash: #f5ecd9;--danger: #b23a3a;--danger-wash: #f6e7e7;--radius: 4px;--radius-lg: 8px;--shadow: 0 1px 2px rgba(18, 32, 25, .04), 0 8px 24px rgba(18, 32, 25, .05);--serif: "IBM Plex Serif", Georgia, serif;--sans: "IBM Plex Sans", system-ui, -apple-system, sans-serif;--mono: "IBM Plex Mono", ui-monospace, "SF Mono", monospace}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--paper);font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}h1,h2,h3{font-family:var(--serif);font-weight:500;line-height:1.2;margin:0}h1{font-size:1.9rem;letter-spacing:-.01em}h2{font-size:1.35rem}h3{font-size:1.05rem;font-weight:600;font-family:var(--sans)}a{color:var(--accent-ink);text-decoration:none}a:hover{text-decoration:underline}.eyebrow{font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}.muted{color:var(--muted)}.mono{font-family:var(--mono)}.btn{font-family:var(--sans);font-size:.9rem;font-weight:600;border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);padding:.5rem .95rem;border-radius:var(--radius);cursor:pointer;transition:background .12s ease,border-color .12s ease,transform .04s ease}.btn:hover{background:var(--surface-2)}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-ink);border-color:var(--accent-ink)}.btn-ghost{border-color:transparent;background:transparent}.btn-ghost:hover{background:var(--surface-2)}.btn-sm{padding:.3rem .6rem;font-size:.8rem}label{font-size:.82rem;font-weight:600;color:var(--ink-soft);display:block;margin-bottom:.3rem}input[type=text],input[type=email],input[type=password],input[type=number],select,textarea{width:100%;font-family:var(--sans);font-size:.92rem;color:var(--ink);background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius);padding:.5rem .65rem}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-wash)}.field{margin-bottom:.9rem}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:1.25rem}.card+.card{margin-top:1rem}.panel-title{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;margin-bottom:.75rem}.badge{display:inline-flex;align-items:center;gap:.35rem;font-family:var(--mono);font-size:.68rem;letter-spacing:.04em;text-transform:uppercase;padding:.15rem .45rem;border-radius:2px;border:1px solid var(--line-strong);color:var(--ink-soft);background:var(--surface-2)}.badge-validated,.badge-active{color:var(--validated);background:var(--validated-wash);border-color:transparent}.badge-pending{color:var(--pending);background:var(--pending-wash);border-color:transparent}.badge-inactive{color:var(--danger);background:var(--danger-wash);border-color:transparent}.seal{border:1px solid var(--line);border-left:3px solid var(--validated);border-radius:var(--radius);background:var(--surface-2);padding:.7rem .85rem}.seal-head{display:flex;align-items:center;justify-content:space-between;gap:.5rem;margin-bottom:.45rem}.seal-label{font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--validated)}.seal-grid{display:grid;grid-template-columns:auto 1fr;gap:.2rem .8rem;font-size:.82rem}.seal-grid dt{font-family:var(--mono);font-size:.7rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);align-self:center}.seal-grid dd{margin:0;color:var(--ink-soft)}.seal-claimid{font-family:var(--mono);font-size:.72rem;color:var(--accent-ink)}.shell{display:grid;grid-template-columns:248px 1fr;min-height:100%}.sidebar{background:var(--ink);color:#e7ece9;padding:1.4rem 1.1rem;display:flex;flex-direction:column;gap:1.4rem;position:sticky;top:0;height:100vh}.brand{font-family:var(--serif);font-size:1.3rem;color:#fff;display:flex;align-items:center;gap:.5rem}.brand .tick{color:var(--accent)}.brand-sub{font-family:var(--mono);font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:#8fa39c;margin-top:.15rem}.nav{display:flex;flex-direction:column;gap:.15rem}.nav a{color:#cdd6d2;font-size:.92rem;font-weight:500;padding:.5rem .65rem;border-radius:var(--radius);display:flex;align-items:center;justify-content:space-between}.nav a:hover{background:#ffffff0f;text-decoration:none}.nav a.active{background:var(--accent);color:#fff}.sidebar-foot{margin-top:auto;font-size:.8rem;color:#9fb0aa}.sidebar-foot .who{color:#e7ece9;font-weight:600;word-break:break-word}.main{padding:2rem 2.4rem;max-width:1080px;width:100%}.page-head{margin-bottom:1.5rem}.page-head p{color:var(--muted);margin:.35rem 0 0}.row{display:flex;gap:1rem;align-items:center}.between{justify-content:space-between}.wrap{flex-wrap:wrap}.stack>*+*{margin-top:.75rem}.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}.spacer{flex:1}.stat{border:1px solid var(--line);border-radius:var(--radius-lg);padding:1rem 1.1rem;background:var(--surface)}.stat .n{font-family:var(--serif);font-size:1.8rem}.stat .k{font-family:var(--mono);font-size:.66rem;text-transform:uppercase;letter-spacing:.1em;color:var(--muted)}.exam-option{display:flex;align-items:flex-start;gap:.75rem;border:1px solid var(--line);border-radius:var(--radius-lg);padding:1rem;cursor:pointer;background:var(--surface);transition:border-color .12s ease,box-shadow .12s ease;width:100%;text-align:left}.exam-option:hover{border-color:var(--line-strong)}.exam-option.selected{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-wash)}.exam-option h3{margin-bottom:.2rem}.q-meta{display:flex;gap:.4rem;flex-wrap:wrap;margin-bottom:.75rem}.q-stem{font-size:1.02rem;line-height:1.6;margin-bottom:1rem}.options{display:flex;flex-direction:column;gap:.5rem}.option{display:flex;gap:.7rem;align-items:flex-start;border:1px solid var(--line-strong);border-radius:var(--radius);padding:.6rem .75rem;cursor:pointer;background:var(--surface);transition:border-color .1s ease,background .1s ease}.option:hover{border-color:var(--accent)}.option .key{font-family:var(--mono);font-weight:500;color:var(--muted)}.option.correct{border-color:var(--validated);background:var(--validated-wash)}.option.incorrect{border-color:var(--danger);background:var(--danger-wash)}.option.disabled{cursor:default}.explanation{margin-top:1.1rem;border-top:1px dashed var(--line-strong);padding-top:1rem}.explanation h4{margin:0 0 .4rem;font-size:.95rem}.paywall{border:1px solid var(--accent);background:linear-gradient(0deg,var(--accent-wash),var(--surface));border-radius:var(--radius-lg);padding:1.1rem 1.25rem;display:flex;align-items:center;gap:1rem;flex-wrap:wrap}.paywall .lock{font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-ink)}table.data{width:100%;border-collapse:collapse;font-size:.88rem}table.data th,table.data td{text-align:left;padding:.5rem .6rem;border-bottom:1px solid var(--line)}table.data th{font-family:var(--mono);font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:500}.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:2rem}.auth-card{width:100%;max-width:400px}.auth-card .brand{color:var(--ink);margin-bottom:.2rem}.auth-card .brand .tick{color:var(--accent)}.divider{display:flex;align-items:center;gap:.75rem;color:var(--muted);font-size:.8rem;margin:1rem 0}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--line)}.error-note{color:var(--danger);background:var(--danger-wash);border:1px solid var(--danger);border-radius:var(--radius);padding:.5rem .7rem;font-size:.85rem}.ok-note{color:var(--validated);background:var(--validated-wash);border-radius:var(--radius);padding:.5rem .7rem;font-size:.85rem}.loading{display:grid;place-items:center;min-height:60vh;color:var(--muted);font-family:var(--mono);font-size:.85rem;letter-spacing:.08em}.empty{text-align:center;padding:2.5rem 1rem;color:var(--muted);border:1px dashed var(--line-strong);border-radius:var(--radius-lg)}@media (max-width: 820px){.shell{grid-template-columns:1fr}.sidebar{position:static;height:auto;flex-direction:row;align-items:center;flex-wrap:wrap;gap:.75rem 1.25rem}.sidebar-foot{margin:0}.nav{flex-direction:row;flex-wrap:wrap}.main{padding:1.25rem}}@media (prefers-reduced-motion: reduce){*{transition:none!important}}