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.faq-icon{transform:rotate(45deg);background:var(--accent);color:#fff}.faq-a{padding:0 18px;max-height:0;overflow:hidden;transition:max-height .32s ease,padding .32s ease;font-size:.9rem;color:var(--txt2);line-height:1.75}.faq-item.open .faq-a{max-height:300px;padding:0 18px 15px}footer{background:var(--bg2);border-top:1px solid var(--border);padding:36px 20px;margin-top:40px}.footer-inner{max-width:1080px;margin:0 auto;display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:flex-start}.footer-brand{max-width:270px}.footer-brand .logo{margin-bottom:9px}.footer-brand p{font-size:.84rem;color:var(--txt3);line-height:1.6}.disclaimer{font-size:.74rem;color:var(--txt3);margin-top:5px;line-height:1.5;opacity:.7}.footer-links{display:flex;flex-direction:column;gap:6px}.footer-links a{font-size:.85rem;color:var(--txt3);transition:color var(--trans)}.footer-links a:hover{color:var(--accent2)}.footer-bottom{max-width:1080px;margin:22px auto 0;padding-top:18px;border-top:1px solid var(--border);display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;font-size:.8rem;color:var(--txt3)}@media(max-width:768px){.calc-card{padding:20px 16px}.tabs{gap:2px}.tab-btn{padding:8px 4px;font-size:.8rem}.tp{padding:14px 18px}.tp-num{font-size:2.8rem}.tp-colon{font-size:2.6rem}.result-grid{grid-template-columns:1fr 1fr}.hero{padding:38px 20px 28px}.footer-inner{flex-direction:column}}@media(max-width:480px){.nap-grid,.result-grid,.stages-grid,.tips-grid{grid-template-columns:1fr}.header-inner{padding:9px 12px}.logo span{display:none}.tp-num{font-size:2.4rem;min-width:1.8ch}.theme-btn{padding:5px 7px}}