.teacher-rental-nav{position:fixed;bottom:0;left:0;right:0;z-index:50;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:4px;padding:8px 6px calc(8px + env(safe-area-inset-bottom));background:#f2f7f3;border-top:1px solid #ccd9d1}.teacher-rental-nav a{display:flex;align-items:center;justify-content:center;text-align:center;min-height:46px;padding:3px;font-size:13px;font-weight:700;text-decoration:none;color:#20483e;background:#fff;border:1px solid #d2ddd7;border-radius:9px}.teacher-rental-nav a[aria-current]{background:#194c3e;color:#fff}.teacher-rental-mode{padding-bottom:calc(82px + env(safe-area-inset-bottom))}.teacher-rental-nav.hidden{display:none}

.teacher-rental-mode .portal-shell{padding:12px 10px calc(90px + env(safe-area-inset-bottom))}.teacher-rental-mode .portal-head{padding:11px;margin:0 0 12px;border:1px solid var(--line);border-radius:13px;background:#fff}.teacher-rental-mode .portal-head .brand-mark,.teacher-rental-mode .portal-head #logoutBtn{display:none!important}.teacher-rental-mode .portal-head h1{margin:0;font-size:16px;font-weight:800;line-height:24px}