.login-shell{max-width:1160px;margin:0 auto;min-height:calc(100vh - 112px);display:grid;grid-template-columns:1.25fr 1fr;gap:80px;align-items:center;padding:54px 30px}.intro{color:var(--nav)}.eyebrow{font-size:11px;letter-spacing:2px;color:var(--text-2)}.intro h1{font-size:31px;line-height:1.5;margin:17px 0 22px;font-weight:800}.slogan{font-size:23px;line-height:1.8;color:var(--text-2)}.scene-card{margin-top:30px;background:linear-gradient(135deg,#16355c,#24518a);border-radius:var(--r-lg);padding:26px;box-shadow:var(--sh-3);color:white}.scene-label{font-size:10px;letter-spacing:2px;color:#b7d0f4}.conversation{display:flex;flex-direction:column;gap:14px;margin:23px 0 28px}.bubble{background:rgba(255,255,255,.13);border:1px solid #ffffff26;border-radius:10px 10px 10px 2px;padding:12px 16px;font-size:13px;align-self:flex-start}.bubble.answer{align-self:flex-end;background:#f0f5ff;color:#16355c;border-radius:10px 10px 2px 10px}.learning-path{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:#dce8ff}.learning-path i{font-style:normal;opacity:.5}.intro-note{margin-top:22px;font-size:12px;color:var(--text-2)}.login-card{background:white;border:1px solid var(--line);border-radius:var(--r-lg);padding:38px 34px;box-shadow:var(--sh-3)}.entry-badge{display:inline-block;color:var(--primary);font-weight:700;background:var(--primary-soft);border:1px solid var(--primary-line);border-radius:6px;padding:5px 13px;font-size:13px}.login-card h2{font-size:27px;color:var(--nav);margin-top:19px}.hint{font-size:13px;color:var(--text-2);margin:8px 0 27px}.login-card label{display:block;margin:19px 0 8px;font-weight:600;font-size:13px}.login-card input{width:100%;height:46px;border:1px solid var(--line-2);border-radius:7px;padding:0 13px;background:#fbfcfe;color:var(--text);font-family:inherit;font-size:14px}.login-card input:focus{outline:3px solid #2563eb18;border-color:var(--primary)}.password-field{position:relative}.password-field input{padding-right:60px}.password-field button{position:absolute;right:10px;top:0;height:46px;border:0;background:transparent;color:var(--text-2);font-family:inherit;cursor:pointer;padding:0 5px}.login-error{min-height:26px;margin-top:12px;font-size:12px;color:var(--red)}.login-submit{width:100%;height:46px;justify-content:center;font-size:15px}.login-submit:disabled{opacity:.65;cursor:wait}.login-tip{text-align:center;border-top:1px solid var(--line);padding-top:20px;margin-top:26px;font-size:12px;line-height:1.9;color:var(--text-3)}.login-footer{text-align:center;color:var(--text-3);font-size:12px;padding:16px}.auth-user{margin-left:12px}.auth-logout{margin-left:8px}@media(max-width:820px){.login-shell{grid-template-columns:1fr;gap:28px;padding:30px 20px;max-width:520px}.intro h1{font-size:25px}.slogan{font-size:18px}.scene-card,.intro-note,.eyebrow{display:none}.login-card{padding:28px}.topbar .brand{font-size:12px}.portal-chip{padding:4px 8px}}