:root{--pico-font-family: "Inter", system-ui, -apple-system, sans-serif;--pico-border-radius: .5rem}body{display:flex;flex-direction:column;min-height:100vh}main{flex:1 0 auto;padding:4rem 0}header.hero{text-align:center;margin-bottom:3.5rem;animation:fadeInDown .6s ease-out}header.hero h1{font-weight:700;letter-spacing:-.02em;margin-bottom:.5rem;font-size:clamp(2rem,5vw,3rem)}header.hero p{color:var(--pico-muted-color);font-size:1.125rem}.calculator-wrapper{max-width:900px;margin:0 auto;width:100%;animation:fadeInUp .6s ease-out}article.calculator-card{padding:2.5rem;box-shadow:0 10px 30px #0006;background-color:var(--pico-card-background-color);border:1px solid var(--pico-muted-border-color);margin-bottom:2rem}.input-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;margin-bottom:2.5rem}.input-group label{font-weight:500;color:var(--pico-color);margin-bottom:.5rem;display:block;font-size:.95rem}.input-group input,.input-group select{margin-bottom:0;font-weight:500}.distance-wrapper{display:flex;gap:.5rem}.distance-wrapper input{flex:2}.distance-wrapper select{flex:1}.unit-help{margin-top:.4rem;font-size:.82rem;color:var(--pico-muted-color)}.custom-dropdown{position:relative;width:100%;user-select:none}.dropdown-trigger{display:flex;justify-content:center;align-items:center;text-align:center;width:100%;padding:.75rem 2.5rem;font-size:1.15rem;font-weight:700;background-color:var(--pico-background-color);border:1px solid var(--pico-primary);border-radius:var(--pico-border-radius);cursor:pointer;color:var(--pico-contrast);transition:border-color .2s,box-shadow .2s;position:relative}.dropdown-trigger:hover{border-color:var(--pico-primary-hover)}.dropdown-trigger:after{content:"";width:.8rem;height:.8rem;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='currentColor' stroke-width='3'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19.5 8.25l-7.5 7.5-7.5-7.5' /%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center;transition:transform .2s;position:absolute;right:1rem}.custom-dropdown.active .dropdown-trigger:after{transform:rotate(180deg)}.dropdown-menu{position:absolute;top:105%;left:0;right:0;z-index:1000;background-color:var(--pico-card-background-color);border:1px solid var(--pico-muted-border-color);border-radius:var(--pico-border-radius);box-shadow:var(--pico-card-box-shadow);max-height:300px;overflow-y:auto;display:none;animation:fadeIn .2s ease-out}.custom-dropdown.active .dropdown-menu{display:block}.dropdown-item{padding:.6rem 1rem;cursor:pointer;font-size:.95rem;font-weight:400;transition:background-color .2s;border-bottom:1px solid rgba(255,255,255,.05);text-align:center!important}.dropdown-item:last-child{border-bottom:none}.dropdown-item:hover{background-color:#ffffff0d;color:var(--pico-primary)}.dropdown-item.selected{background-color:#ffffff1a;color:var(--pico-primary);font-weight:600}.dropdown-menu::-webkit-scrollbar{width:8px}.dropdown-menu::-webkit-scrollbar-track{background:transparent}.dropdown-menu::-webkit-scrollbar-thumb{background:var(--pico-muted-border-color);border-radius:4px}.dropdown-menu::-webkit-scrollbar-thumb:hover{background:var(--pico-muted-color)}.results-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-top:1rem;padding-top:2rem;border-top:1px dashed var(--pico-muted-border-color)}.result-item{padding:1.5rem;background:#ffffff05;border-radius:8px;text-align:center;border:1px solid rgba(255,255,255,.05);transition:border-color .3s,box-shadow .3s;container-type:inline-size}.result-label{font-size:.8rem;text-transform:uppercase;letter-spacing:.05em;color:var(--pico-muted-color);margin-bottom:.75rem;display:block;font-weight:600}.result-number-wrapper{display:flex;align-items:baseline;justify-content:center;white-space:nowrap;width:100%}.result-value{font-family:ui-monospace,Cascadia Code,monospace;font-size:clamp(1.2rem,15cqi,2.8rem);font-weight:700;color:var(--pico-primary);transition:color .3s}.result-unit{font-size:clamp(1.2rem,15cqi,2.8rem);color:var(--pico-muted-color);font-weight:400;margin-left:.2rem}.result-subline{margin-top:.35rem}.secondary-value{font-size:1.05rem;color:var(--pico-muted-color)}.result-item.warning-state{border-color:#f59e0b;background:#f59e0b0d}.result-item.warning-state .result-value{color:#f59e0b}.result-item.danger-state{border-color:#ef4444;background:#ef44440d}.result-item.danger-state .result-value{color:#ef4444}.warning-message{text-align:center;margin-top:1.5rem;font-size:.9rem;color:#ef4444;font-weight:500;display:none;animation:fadeIn .3s}.seo-content{margin-top:4rem;padding:2rem 0;border-top:1px solid var(--pico-muted-border-color)}.seo-content h2{font-size:1.5rem;margin-bottom:1rem;color:var(--pico-h2-color)}.seo-content p{color:var(--pico-muted-color);line-height:1.6;margin-bottom:1.5rem}.ad-container{margin:2rem 0;text-align:center;min-height:100px;display:flex;align-items:center;justify-content:center;background:#ffffff05;border:1px dashed var(--pico-muted-border-color);color:var(--pico-muted-color);font-size:.8rem}footer{flex-shrink:0;padding:2rem 0;border-top:1px solid var(--pico-muted-border-color)}.footer-links{display:flex;justify-content:center;gap:1.5rem;margin-bottom:2rem}.footer-links a{color:var(--pico-muted-color);text-decoration:none;font-size:.9rem;transition:color .2s}.footer-links a:hover{color:var(--pico-h2-color)}.footer-content{display:flex;justify-content:space-between;align-items:center;font-size:.8rem;color:var(--pico-muted-color)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@media(max-width:768px){.footer-content{flex-direction:column;gap:1rem;text-align:center}.input-grid{grid-template-columns:1fr}}