:root{--bg0:#0f172a;--bg1:#1e293b;--card:#fffffff5;--card-border:#94a3b859;--text:#0f172a;--muted:#64748b;--accent:#0d9488;--accent2:#4f46e5;--danger:#b91c1c;--radius:20px;--shadow:0 18px 50px #0f172a2e}*,:before,:after{box-sizing:border-box}body{color:var(--text);background:radial-gradient(1200px 600px at 10% -10%, #2dd4bf38, transparent 55%), radial-gradient(900px 500px at 100% 0%, #818cf833, transparent 50%), linear-gradient(165deg, var(--bg0) 0%, var(--bg1) 45%, #0f172a 100%);min-height:100vh;margin:0;font-family:Segoe UI,system-ui,-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif}#app{min-height:100vh}a{color:inherit}.app-root[data-v-ef444ac9]{min-height:100vh}.login-page[data-v-9d885b83]{flex-direction:column;justify-content:center;align-items:center;gap:2rem;min-height:100vh;padding:1.5rem 1rem 2.5rem;display:flex}.hero[data-v-9d885b83]{text-align:center;color:#e2e8f0;max-width:520px}.badge[data-v-9d885b83]{letter-spacing:.04em;color:#5eead4;background:#2dd4bf2e;border:1px solid #2dd4bf59;border-radius:999px;margin:0 0 .5rem;padding:.2rem .65rem;font-size:.75rem;font-weight:700;display:inline-block}.hero h1[data-v-9d885b83]{letter-spacing:-.02em;margin:0 0 .65rem;font-size:clamp(1.75rem,4vw,2.25rem);font-weight:800}.lead[data-v-9d885b83]{color:#cbd5e1;margin:0;font-size:1rem;line-height:1.65}.lead strong[data-v-9d885b83]{color:#f8fafc}.card[data-v-9d885b83]{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);width:min(440px,100%);box-shadow:var(--shadow);padding:1.75rem 1.85rem}.card h2[data-v-9d885b83]{margin:0 0 .35rem;font-size:1.2rem}.tip[data-v-9d885b83]{color:var(--muted);margin:0 0 1rem;font-size:.9rem;line-height:1.55}.btn-primary[data-v-9d885b83]{color:#fff;cursor:pointer;background:linear-gradient(135deg,#0d9488,#0f766e);border:none;border-radius:12px;width:100%;padding:.75rem 1rem;font-size:1rem;font-weight:800}.btn-primary[data-v-9d885b83]:disabled{opacity:.65;cursor:not-allowed}.err[data-v-9d885b83]{color:var(--danger);margin:0 0 .75rem;font-size:.88rem}.auth-callback[data-v-b4c99f10]{color:#e2e8f0;place-items:center;min-height:50vh;padding:1rem;font-size:1.05rem;font-weight:600;display:grid}.home[data-v-b2221ff9]{max-width:640px;margin:0 auto;padding:2rem 1.25rem 3rem}.top[data-v-b2221ff9]{color:#e2e8f0;justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:2rem;display:flex}.kicker[data-v-b2221ff9]{letter-spacing:.12em;text-transform:uppercase;color:#94a3b8;margin:0 0 .35rem;font-size:.78rem;font-weight:700}.top h1[data-v-b2221ff9]{margin:0 0 .5rem;font-size:clamp(1.5rem,3.5vw,1.85rem);font-weight:800}.sub[data-v-b2221ff9]{color:#cbd5e1;max-width:36rem;margin:0;font-size:.95rem;line-height:1.6}.sub strong[data-v-b2221ff9]{color:#f1f5f9}.link-out[data-v-b2221ff9]{color:#e2e8f0;cursor:pointer;background:#0f172a59;border:1px solid #94a3b873;border-radius:10px;flex-shrink:0;padding:.45rem .75rem;font-size:.88rem}.link-out[data-v-b2221ff9]:hover{background:#1e293ba6}.loading[data-v-b2221ff9]{text-align:center;color:#94a3b8;margin:2rem 0}.stack[data-v-b2221ff9]{flex-direction:column;gap:1.75rem;display:flex}.big-card[data-v-b2221ff9]{background:var(--card);border-radius:var(--radius);border:1px solid var(--card-border);box-shadow:var(--shadow);flex-direction:column;gap:.85rem;min-height:280px;padding:1.75rem 1.85rem 1.65rem;display:flex}.big-card.teacher[data-v-b2221ff9]{border-top:4px solid #0d9488}.big-card.admin[data-v-b2221ff9]{border-top:4px solid #4f46e5}.big-card.admin.locked[data-v-b2221ff9]{opacity:.72;cursor:not-allowed}.card-top[data-v-b2221ff9]{align-items:center;gap:.85rem;display:flex}.icon[data-v-b2221ff9]{color:#0f766e;background:#0d94881f;border-radius:14px;place-items:center;width:2.5rem;height:2.5rem;font-size:1.25rem;display:grid}.icon.dim[data-v-b2221ff9]{color:#4338ca;background:#4f46e51f}.big-card h2[data-v-b2221ff9]{margin:0;font-size:1.35rem}.role-tag[data-v-b2221ff9]{color:#64748b;margin:.15rem 0 0;font-size:.82rem;font-weight:600}.role-tag.bad[data-v-b2221ff9]{color:#b91c1c}.desc[data-v-b2221ff9]{color:#475569;margin:0;font-size:.95rem;line-height:1.65}.bullets[data-v-b2221ff9]{color:#64748b;margin:0;padding-left:1.15rem;font-size:.9rem;line-height:1.55}.action[data-v-b2221ff9]{cursor:pointer;border:none;border-radius:12px;width:100%;margin-top:auto;padding:.75rem 1rem;font-size:.98rem;font-weight:800}.action.primary[data-v-b2221ff9]{color:#fff;background:linear-gradient(135deg,#0d9488,#0f766e)}.action.secondary[data-v-b2221ff9]{color:#fff;background:linear-gradient(135deg,#4f46e5,#4338ca)}.action[data-v-b2221ff9]:disabled{opacity:.55;cursor:not-allowed;filter:grayscale(.25)}.hint-warn[data-v-b2221ff9]{color:#b45309;margin:0;font-size:.8rem}