:root{--bgr-primary:#1976d2;--bgr-primary-dark:#1565c0;--bgr-secondary:#7b1fa2;--bgr-success:#388e3c;--bgr-warning:#f57c00;--bgr-text:#212121;--bgr-text-light:#616161;--bgr-bg:#fff;--bgr-bg-soft:#fafafa;--bgr-bg-muted:#f5f5f5;--bgr-border:#e0e0e0;--bgr-radius:12px;--bgr-shadow:0 4px 6px -1px #0000001a;--bgr-shadow-lg:0 10px 15px -3px #0000001a}.bgr-calculator{max-width:1000px;color:var(--bgr-text);margin:0 auto;padding:20px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.7}.bgr-hero{text-align:center;border-radius:var(--bgr-radius);background:linear-gradient(135deg,#e3f2fd 0%,#f3e5f5 100%);margin-bottom:30px;padding:50px 20px}.bgr-hero__badge{margin-bottom:16px}.bgr-badge{color:var(--bgr-primary);box-shadow:var(--bgr-shadow);background:#fff;border-radius:50px;padding:8px 16px;font-size:14px;font-weight:500;display:inline-block}.bgr-hero__title{background:linear-gradient(135deg, var(--bgr-primary), var(--bgr-secondary));-webkit-text-fill-color:transparent;background-clip:text;margin:0 0 16px;font-size:clamp(1.75rem,5vw,2.5rem);font-weight:700}.bgr-hero__subtitle{color:var(--bgr-text-light);max-width:600px;margin:0 auto;font-size:1.1rem}.bgr-intro-section{background:var(--bgr-bg);border:1px solid var(--bgr-border);border-radius:var(--bgr-radius);margin-bottom:30px;padding:30px}.bgr-intro-section h2{color:var(--bgr-primary-dark);margin:0 0 16px;font-size:1.5rem}.bgr-feature-list{margin:20px 0;padding:0;list-style:none}.bgr-feature-list li{padding:8px 0 8px 28px;position:relative}.bgr-feature-list li:before{content:"✓";color:var(--bgr-success);font-weight:700;position:absolute;left:0}.bgr-calc-container{margin-bottom:40px}.bgr-calc-card{background:var(--bgr-bg);border:1px solid var(--bgr-border);border-radius:var(--bgr-radius);box-shadow:var(--bgr-shadow-lg);overflow:hidden}.bgr-calc-header{border-bottom:1px solid var(--bgr-border);background:var(--bgr-bg-soft);padding:24px}.bgr-calc-header h2{color:var(--bgr-primary-dark);margin:0 0 8px;font-size:1.25rem}.bgr-calc-header>p{color:var(--bgr-text-light);margin:0 0 20px;font-size:14px}.bgr-unit-toggle{background:var(--bgr-bg);border:1px solid var(--bgr-border);border-radius:50px;padding:4px;display:inline-flex}.bgr-unit-btn{cursor:pointer;background:0 0;border:none;border-radius:50px;padding:8px 20px;font-size:14px;font-weight:500;transition:all .2s}.bgr-unit-btn.active{background:var(--bgr-primary);color:#fff}.bgr-form{padding:24px}.bgr-measurement-group{margin-bottom:30px}.bgr-group-title{color:var(--bgr-primary-dark);align-items:center;gap:10px;margin:0 0 8px;font-size:1.1rem;display:flex}.bgr-group-icon{font-size:1.25rem}.bgr-group-desc{color:var(--bgr-text-light);margin:0 0 16px;font-size:14px}.bgr-inputs-row{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;display:grid}.bgr-input-group label{margin-bottom:6px;font-size:14px;font-weight:500;display:block}.bgr-tooltip{background:var(--bgr-bg-muted);width:18px;height:18px;color:var(--bgr-text-light);cursor:help;border-radius:50%;justify-content:center;align-items:center;margin-left:4px;font-size:11px;display:inline-flex}.bgr-input-wrapper{align-items:center;display:flex;position:relative}.bgr-input-wrapper input{border:2px solid var(--bgr-border);border-radius:8px;width:100%;padding:12px 50px 12px 16px;font-size:16px;transition:border-color .2s}.bgr-input-wrapper input:focus{border-color:var(--bgr-primary);outline:none}.bgr-unit{color:var(--bgr-text-light);font-size:14px;position:absolute;right:16px}.bgr-submit-btn{background:linear-gradient(135deg, var(--bgr-primary), var(--bgr-secondary));color:#fff;cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;gap:10px;width:100%;padding:16px 24px;font-size:16px;font-weight:600;transition:transform .2s,box-shadow .2s;display:flex}.bgr-submit-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #1976d266}.bgr-results{border-top:1px solid var(--bgr-border);background:var(--bgr-bg-soft);padding:24px}.bgr-results-header{text-align:center;margin-bottom:24px}.bgr-results-header h2{margin:0 0 8px;font-size:1.5rem}.bgr-results-header p{color:var(--bgr-text-light);margin:0}.bgr-main-result{grid-template-columns:1fr 1fr;gap:20px;margin-bottom:30px;display:grid}.bgr-primary-size{background:linear-gradient(135deg, var(--bgr-primary), var(--bgr-secondary));border-radius:var(--bgr-radius);text-align:center;color:#fff;padding:24px}.bgr-size-label{opacity:.9;margin-bottom:8px;font-size:14px;display:block}.bgr-primary-size .bgr-size-value{font-size:2.5rem;font-weight:700}.bgr-confidence{background:var(--bgr-bg);border-radius:var(--bgr-radius);text-align:center;border:1px solid var(--bgr-border);padding:24px}.bgr-confidence-label{color:var(--bgr-text-light);margin-bottom:12px;font-size:14px;display:block}.bgr-confidence-bar{background:var(--bgr-bg-muted);border-radius:4px;height:8px;margin-bottom:8px;overflow:hidden}.bgr-confidence-fill{background:linear-gradient(90deg, var(--bgr-success), #66bb6a);border-radius:4px;height:100%;transition:width .5s}.bgr-confidence-value{color:var(--bgr-success);font-size:1.5rem;font-weight:700}.bgr-international-sizes{margin-bottom:30px}.bgr-international-sizes h3{color:var(--bgr-primary-dark);margin:0 0 16px;font-size:1.1rem}.bgr-sizes-grid{grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;display:grid}.bgr-size-item{background:var(--bgr-bg);border:1px solid var(--bgr-border);border-radius:8px;flex-direction:column;align-items:center;gap:4px;padding:16px 12px;display:flex}.bgr-size-flag{font-size:1.5rem}.bgr-size-country{color:var(--bgr-text-light);font-size:12px}.bgr-size-item .bgr-size-value{font-size:1.1rem;font-weight:700}.bgr-sister-sizes{margin-bottom:30px}.bgr-sister-sizes h3{color:var(--bgr-primary-dark);margin:0 0 8px;font-size:1.1rem}.bgr-sister-sizes>p{color:var(--bgr-text-light);margin:0 0 16px;font-size:14px}.bgr-sister-grid{grid-template-columns:repeat(3,1fr);gap:12px;display:grid}.bgr-sister-item{text-align:center;background:var(--bgr-bg);border:1px solid var(--bgr-border);border-radius:8px;padding:16px}.bgr-sister-item.bgr-sister-current{background:linear-gradient(135deg, var(--bgr-primary), var(--bgr-secondary));color:#fff;border:none}.bgr-sister-label{opacity:.8;margin-bottom:8px;font-size:12px}.bgr-sister-size{margin-bottom:4px;font-size:1.25rem;font-weight:700}.bgr-sister-note{opacity:.7;font-size:11px}.bgr-shape-analysis h3{color:var(--bgr-primary-dark);margin:0 0 12px;font-size:1.1rem}.bgr-shape-indicators{flex-wrap:wrap;gap:8px;margin-bottom:24px;display:flex}.bgr-shape-badge{background:var(--bgr-bg);border:1px solid var(--bgr-border);border-radius:50px;padding:6px 14px;font-size:13px;font-weight:500}.bgr-fit-tips{margin-bottom:24px}.bgr-fit-tips h3{color:var(--bgr-primary-dark);margin:0 0 12px;font-size:1.1rem}.bgr-tips-list{margin:0;padding:0;list-style:none}.bgr-tips-list li{border-bottom:1px solid var(--bgr-border);padding:10px 0 10px 28px;font-size:14px;position:relative}.bgr-tips-list li:last-child{border-bottom:none}.bgr-tips-list li:before{content:"✓";color:var(--bgr-success);font-weight:700;position:absolute;left:0}.bgr-results-actions{gap:12px;display:flex}.bgr-btn{cursor:pointer;border:none;border-radius:8px;flex:1;padding:12px 20px;font-size:14px;font-weight:600;transition:all .2s}.bgr-btn--primary{background:linear-gradient(135deg, var(--bgr-primary), var(--bgr-secondary));color:#fff}.bgr-btn--secondary{background:var(--bgr-bg);border:1px solid var(--bgr-border);color:var(--bgr-text)}.bgr-btn:hover{transform:translateY(-1px)}.bgr-how-it-works{margin-bottom:40px}.bgr-how-it-works h2{color:var(--bgr-primary-dark);margin:0 0 24px;font-size:1.5rem}.bgr-steps{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;display:grid}.bgr-step{background:var(--bgr-bg);border:1px solid var(--bgr-border);border-radius:var(--bgr-radius);text-align:center;padding:24px}.bgr-step-number{background:linear-gradient(135deg, var(--bgr-primary), var(--bgr-secondary));color:#fff;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;margin-bottom:16px;font-size:1.25rem;font-weight:700;display:inline-flex}.bgr-step h3{margin:0 0 8px;font-size:1rem}.bgr-step p{color:var(--bgr-text-light);margin:0;font-size:14px}.bgr-size-guide{margin-bottom:40px}.bgr-size-guide h2{color:var(--bgr-primary-dark);margin:0 0 8px;font-size:1.5rem}.bgr-size-guide h3{color:var(--bgr-primary-dark);margin:30px 0 16px;font-size:1.1rem}.bgr-size-guide>p{color:var(--bgr-text-light);margin:0 0 20px}.bgr-table-scroll{overflow-x:auto}.bgr-size-table{border-collapse:collapse;width:100%;min-width:500px}.bgr-size-table th,.bgr-size-table td{text-align:center;border:1px solid var(--bgr-border);padding:12px 16px}.bgr-size-table th{background:var(--bgr-primary);color:#fff;font-weight:600}.bgr-size-table tr:nth-child(2n){background:var(--bgr-bg-soft)}.bgr-table-note{text-align:center;color:var(--bgr-text-light);margin-top:12px;font-size:13px}.bgr-why-wrong{margin-bottom:40px}.bgr-why-wrong h2{color:var(--bgr-primary-dark);margin:0 0 24px;font-size:1.5rem}.bgr-reasons{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;display:grid}.bgr-reason{background:var(--bgr-bg);border:1px solid var(--bgr-border);border-radius:var(--bgr-radius);text-align:center;padding:24px}.bgr-reason-icon{margin-bottom:12px;font-size:2rem}.bgr-reason h3{margin:0 0 8px;font-size:1rem}.bgr-reason p{color:var(--bgr-text-light);margin:0;font-size:14px}.bgr-trust{border-radius:var(--bgr-radius);background:linear-gradient(135deg,#e3f2fd 0%,#f3e5f5 100%);grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:40px;padding:40px 20px;display:grid}.bgr-trust-item{text-align:center}.bgr-trust-number{background:linear-gradient(135deg, var(--bgr-primary), var(--bgr-secondary));-webkit-text-fill-color:transparent;background-clip:text;font-size:2.5rem;font-weight:700}.bgr-trust-label{color:var(--bgr-text-light);font-size:14px}.bgr-faq{margin-bottom:40px}.bgr-faq h2{color:var(--bgr-primary-dark);margin:0 0 24px;font-size:1.5rem}.bgr-faq-list{flex-direction:column;gap:12px;display:flex}.bgr-faq-item{border:1px solid var(--bgr-border);border-radius:var(--bgr-radius);overflow:hidden}.bgr-faq-q{background:var(--bgr-bg);text-align:left;cursor:pointer;border:none;justify-content:space-between;align-items:center;width:100%;padding:18px 24px;font-size:1rem;font-weight:600;display:flex}.bgr-faq-q:after{content:"+";color:var(--bgr-primary);font-size:1.5rem}.bgr-faq-item.active .bgr-faq-q:after{content:"−"}.bgr-faq-q:hover{background:var(--bgr-bg-soft)}.bgr-faq-a{max-height:0;transition:max-height .3s;overflow:hidden}.bgr-faq-item.active .bgr-faq-a{max-height:500px}.bgr-faq-a p{color:var(--bgr-text-light);margin:0;padding:0 24px 20px;font-size:15px}@media (width<=768px){.bgr-hero{padding:40px 16px}.bgr-hero__title{font-size:1.75rem}.bgr-main-result,.bgr-sister-grid{grid-template-columns:1fr}.bgr-trust{grid-template-columns:1fr;gap:24px}.bgr-results-actions{flex-direction:column}}@media (width<=480px){.bgr-calculator{padding:12px}.bgr-calc-header,.bgr-form,.bgr-results{padding:16px}.bgr-inputs-row{grid-template-columns:1fr}}@media print{.bgr-hero,.bgr-intro-section,.bgr-how-it-works,.bgr-why-wrong,.bgr-faq,.bgr-results-actions,.bgr-submit-btn{display:none}.bgr-results{display:block!important}}