:root{--ink:#18221d;--muted:#657169;--paper:#f4f1e9;--card:#fffdf8;--line:#d8ddd4;--green:#185c3b;--lime:#c9f269;--red:#a23b2a;--terminal:#111a15;--shadow:0 18px 50px rgba(24,34,29,.10)}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"Noto Sans JP",system-ui,sans-serif}.topbar{min-height:92px;padding:18px clamp(20px,5vw,72px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(244,241,233,.92);position:sticky;top:0;z-index:10}.topbar h1{font-size:clamp(20px,3vw,30px);margin:2px 0}.eyebrow,.step{text-transform:uppercase;letter-spacing:.15em;font-size:11px;font-weight:800;color:var(--green)}a{color:var(--green);font-weight:700}.shell{width:min(1180px,calc(100% - 32px));margin:36px auto 80px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--shadow)}.login-card{max-width:520px;margin:10vh auto 0}.login-card h2,.card h2{margin:6px 0 10px}.muted{color:var(--muted);line-height:1.7}.error{color:var(--red);min-height:1.4em}.admin-link{display:inline-block;margin-top:18px}form{display:grid;gap:16px;margin-top:24px}label{display:grid;gap:7px;font-size:13px;font-weight:750}input,select{width:100%;border:1px solid var(--line);background:white;border-radius:10px;padding:12px;font:inherit}button,.button{border:0;border-radius:10px;padding:12px 18px;background:var(--green);color:white;font:inherit;font-weight:800;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}button.secondary{background:#e6ebe4;color:var(--ink)}button.danger{background:var(--red)}button:disabled{opacity:.5;cursor:not-allowed}.timer{font:800 26px ui-monospace,monospace;background:var(--ink);color:var(--lime);padding:10px 16px;border-radius:10px}.exam-grid{display:grid;grid-template-columns:290px 1fr;gap:20px}.sidebar{display:grid;gap:10px;align-content:start;position:sticky;top:120px}.question-tab{padding:16px;text-align:left;background:var(--card);color:var(--ink);border:1px solid var(--line)}.question-tab.active{border-color:var(--green);box-shadow:inset 4px 0 var(--green)}.question-tab small{display:block;color:var(--muted);margin-top:4px}.question-body{min-height:240px}.hint{background:#edf3e9;border-left:4px solid var(--green);padding:12px 14px;margin-top:10px}.credentials{display:grid;grid-template-columns:1fr 1fr;gap:12px;background:var(--ink);color:white;border-radius:12px;padding:16px;margin:18px 0}.credentials code{color:var(--lime)}.actions{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap;margin-top:18px}.terminal-card{grid-column:1/-1;padding:0;overflow:hidden;background:var(--terminal);border-color:#263a2f}.terminal-toolbar{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;color:#dfe9e1;background:#203029;font-size:12px}.terminal-status{display:flex;gap:8px;align-items:center}.dot{width:8px;height:8px;border-radius:50%;background:#e2a13b}.dot.online{background:#72d590}.terminal{height:390px;padding:12px}.guide-list{display:grid;gap:14px;margin:24px 0}.guide-item{display:grid;grid-template-columns:42px 1fr;gap:14px}.guide-num{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--lime);font-weight:900}.review-list,.result-list{display:grid;gap:10px;margin:20px 0}.review-row,.result-row{display:flex;justify-content:space-between;gap:20px;border:1px solid var(--line);padding:14px;border-radius:10px}.correct{color:var(--green)}.incorrect{color:var(--red)}.score{font-size:64px;font-weight:900;line-height:1;margin:22px 0}.score small{font-size:20px;color:var(--muted)}.admin-grid{display:grid;grid-template-columns:1fr 2fr;gap:20px}.metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:20px}.metric{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px}.metric strong{font-size:26px;display:block}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;min-width:760px}th,td{text-align:left;border-bottom:1px solid var(--line);padding:12px 8px;font-size:13px}th{color:var(--muted)}.badge{display:inline-block;padding:4px 8px;border-radius:20px;background:#e7ece7;font-weight:750}.issued{background:#f5f9e9;border:1px solid #cbd8aa;padding:14px;border-radius:10px;margin-top:15px}.issued code{word-break:break-all}.top-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}@media(max-width:780px){.exam-grid,.admin-grid{grid-template-columns:1fr}.sidebar{position:static;grid-template-columns:repeat(3,1fr)}.metric-row{grid-template-columns:1fr 1fr}.credentials{grid-template-columns:1fr}.terminal{height:320px}.topbar{min-height:76px}.shell{margin-top:20px}.card{padding:20px}}@media(max-width:480px){.sidebar{grid-template-columns:1fr}.metric-row{grid-template-columns:1fr}.topbar .eyebrow{display:none}.timer{font-size:18px}.review-row,.result-row{display:block}}