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36px;padding:28px;border-radius:15px;border:1px solid #53649b;background:radial-gradient(ellipse at top right,#30295f80,transparent 70%),#15233b}.atf-next h3{font-size:25px;line-height:1.3;margin:10px 0}.atf-campus .atf-primary,.atf-campus .atf-secondary{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:12px 20px;border-radius:12px;border:1px solid transparent;font-weight:600;line-height:1.4;text-align:center;text-decoration:none;transition:background-color .18s ease,border-color .18s ease}.atf-campus .atf-primary{color:#0a132c;background:#c1d3ff;border-color:#c1d3ff;box-shadow:none}.atf-campus .atf-primary:hover{background:#d5e1ff;border-color:#d5e1ff}.atf-campus .atf-secondary{color:#edf2ff;background:#1a2b46;border-color:#667fa9}.atf-campus .atf-secondary:hover{background:#293e61;border-color:#92abd5}.atf-section-heading{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;margin:26px 0 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var(--atf-border);padding:18px 0}.atf-campus summary{cursor:pointer;color:#d7e3ff;font-size:13px}.atf-lesson h3{font-size:17px;margin-top:20px}.atf-campus a{color:#b6ceff;text-decoration:underline;text-underline-offset:4px}.atf-footer-actions,.atf-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:24px}.atf-footer-actions>span{flex:1;min-width:170px}.atf-text-button{border:0;padding:8px 0;min-height:44px;background:none;color:#cbdcff;text-decoration:underline;text-underline-offset:4px}.atf-text-button:hover{color:#fff}.atf-exercise{margin-top:28px}.atf-exercise fieldset{border:0;padding:0;margin:0;min-width:0}.atf-exercise legend{font-size:18px;font-weight:600;line-height:1.6;margin-bottom:22px}.atf-exercise label{display:flex;align-items:flex-start;gap:14px;border:1px solid #475a7a;background:#0c1526;border-radius:12px;padding:17px;font-size:14px;margin-bottom:10px;cursor:pointer}.atf-exercise label.is-selected{background:#23355c;border-color:#b1bcff}.atf-exercise input{flex:0 0 auto;width:17px;height:17px;margin:3px 0 0;accent-color:#b9b4ff}.atf-hint{margin:16px 0}.atf-feedback,.atf-error{margin-top:26px;border-left:3px solid #b5a8ff;padding:18px 22px;background:#1b2540;border-radius:0 12px 12px 0}.atf-feedback h3{margin:0;font-size:20px}.atf-error{border-color:#ffc69c}.atf-campus .atf-note{font-size:12px;border-left:2px solid #748ac9;padding:12px 16px;background:#101a2e;margin:24px 0}.atf-lab-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:28px}.atf-lab-grid article{border:1px solid var(--atf-border);border-radius:14px;padding:22px;background:#111c30}.atf-lab-grid h3{font-size:18px;line-height:1.3;margin:14px 0}.atf-lab-grid p,.atf-lab-grid a{font-size:12px}.atf-save-notice:empty{display:none}.atf-sr{position:absolute;width:1px;height:1px;clip-path:inset(50%);overflow:hidden;white-space:nowrap}@media (max-width: 1050px){.atf-grid{grid-template-columns:210px minmax(0,1fr);gap:18px}.atf-concept-map{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width: 740px){.atf-grid{grid-template-columns:1fr}.atf-guide{position:static;display:grid;grid-template-columns:115px minmax(0,1fr)}.atf-guide-image{height:100%}.atf-guide img{height:275px;width:180px;max-width:none;margin-left:-32px}.atf-guide-copy{padding:20px}.atf-guide-copy>p:not(.atf-kicker):not(.atf-storage){display:none}.atf-guide h2{margin:8px 0}.atf-counter{margin:12px 0;padding-top:12px}.atf-counter strong{font-size:29px}.atf-spaces{gap:2px}.atf-spaces button{padding:10px 6px;font-size:12px}.atf-spaces button span{display:block;margin:0}.atf-next{padding:22px}}@media (max-width: 430px){.atf-concept-map,.atf-lab-grid{grid-template-columns:1fr}.atf-actions>button{width:100%}.atf-guide-copy{padding:16px}.atf-campus .atf-kicker{letter-spacing:1px}}@media (prefers-reduced-motion: reduce){.atf-campus *{transition:none!important}}