:root{--bsc-primary:#0072ce;--bsc-primary-deep:#005fa3;--bsc-secondary:#00a86b;--bsc-secondary-light:#e6f0ff;--bsc-danger:#e74c3c;--bsc-bg:#f7f9fb;--bsc-white:#ffffff;--bsc-text:#26282c;--bsc-border:#d8dce2;--bsc-radius:8px;--bsc-spacing:1.5rem;--bsc-gap:0.6rem;--bsc-text-muted:#6b7280;--bsc-text-faint:#9ca3af;--bsc-shadow-sm:0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);--bsc-shadow-md:0 4px 16px rgba(0, 0, 0, 0.08);--bsc-shadow-lg:0 10px 40px rgba(0, 0, 0, 0.11);--bsc-transition:0.2s ease}[hidden]{display:none!important}.bsc-container{display:flex;flex-direction:column;gap:1rem}.bsc-header{text-align:center;border:1px solid var(--bsc-border);border-radius:var(--bsc-radius);box-shadow:var(--bsc-shadow-sm);padding:2rem 1rem}.bsc-header-icon{display:block;font-size:2rem!important;color:var(--bsc-primary)!important;animation:bsc-spin-glow 6s ease-in-out infinite}@keyframes bsc-spin-glow{0%,100%{transform:rotate(0deg) scale(1);opacity:1}50%{transform:rotate(180deg) scale(1.15);opacity:.75}}.bsc-title{font-size:clamp(1.5rem, 5vw, 2rem)!important;font-weight:700;line-height:1.15;color:var(--bsc-text)!important}.bsc-title em{font-style:normal!important;color:var(--bsc-primary)!important}.bsc-subtitle{font-size:0.875rem!important;color:var(--bsc-text-muted)!important;margin-top:.3rem;font-weight:400}.bsc-settings{display:flex;flex-wrap:wrap;gap:.75rem 1.25rem;justify-content:center;align-items:center;background:var(--bsc-bg)!important;border:1px solid var(--bsc-border);border-radius:var(--bsc-radius);padding:.875rem 1rem}.bsc-setting-group{display:flex;align-items:center;gap:.5rem}.bsc-setting-label{font-size:0.72rem!important;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--bsc-text-muted)!important;white-space:nowrap}.bsc-toggle{display:flex;background:var(--bsc-white)!important;border:1px solid var(--bsc-border);border-radius:8px;overflow:hidden}.bsc-toggle-btn{background:none!important;border:none;padding:.3rem .7rem;font-size:0.78rem!important;font-weight:600;color:var(--bsc-text-muted)!important;transition:background var(--bsc-transition),color var(--bsc-transition);white-space:nowrap;cursor:pointer}.bsc-toggle-btn.bsc-active{background:var(--bsc-primary)!important;color:var(--bsc-white)!important}.bsc-toggle-btn:not(.bsc-active):hover{background:var(--bsc-secondary-light)!important;color:var(--bsc-primary-deep)!important}.bsc-toggle-btn:focus-visible{outline:2px solid var(--bsc-primary);outline-offset:-2px}.bsc-method-info{display:flex;align-items:flex-start;gap:.5rem;background:var(--bsc-secondary-light)!important;border-left:3px solid var(--bsc-primary);border-radius:0 8px 8px 0;padding:.65rem .875rem;font-size:0.8rem!important;color:var(--bsc-primary-deep)!important;line-height:1.55}.bsc-info-icon{flex-shrink:0;font-size:0.95rem!important;font-weight:700;margin-top:.05em}.bsc-method-info strong{font-weight:700}.bsc-inputs{display:flex;gap:var(--bsc-spacing)}.bsc-step-card{display:flex;gap:1rem;align-items:flex-start;background:var(--bsc-white)!important;border:1px solid var(--bsc-border);border-radius:var(--bsc-radius);padding:1.25rem;transition:border-color var(--bsc-transition),box-shadow var(--bsc-transition)}.bsc-step-card:focus-within{border-color:var(--bsc-primary)!important;box-shadow:0 0 0 3px rgb(0 114 206 / .1)}.bsc-step-num{width:30px;height:30px;min-width:30px;border-radius:50%;background:var(--bsc-primary)!important;color:var(--bsc-white)!important;font-size:0.8rem!important;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:.1rem;padding:0;box-shadow:0 2px 8px rgb(0 114 206 / .35)}.bsc-step-content{flex:1;min-width:0}.bsc-step-title{display:block;font-size:0.9rem!important;font-weight:700;color:var(--bsc-text)!important;margin-bottom:.3rem;cursor:default}.bsc-step-hint{font-size:0.78rem!important;color:var(--bsc-text-muted)!important;margin-bottom:.7rem;line-height:1.55}.bsc-step-hint em{font-style:normal;font-weight:600;color:var(--bsc-text)!important}.bsc-input-wrap{display:flex;align-items:stretch;border:1px solid var(--bsc-border);border-radius:var(--bsc-radius);background:var(--bsc-bg)!important;overflow:hidden;transition:border-color var(--bsc-transition),box-shadow var(--bsc-transition)}.bsc-input-wrap:focus-within{border-color:var(--bsc-primary)!important;box-shadow:0 0 0 2px rgb(0 114 206 / .12)}.bsc-input{flex:1;border:none;background:#fff0;padding:.6rem .75rem;font-size:1.05rem!important;font-weight:600;color:var(--bsc-text)!important;outline:none;min-width:0;-moz-appearance:textfield}.bsc-input::-webkit-inner-spin-button,.bsc-input::-webkit-outer-spin-button{opacity:.4}.bsc-input::placeholder{color:var(--bsc-text-faint)!important;font-weight:400}.bsc-unit-badge{display:flex;align-items:center;justify-content:center;padding:0 .75rem;min-width:44px;font-size:0.78rem!important;font-weight:700;color:var(--bsc-primary)!important;background:var(--bsc-secondary-light)!important;border-left:1px solid var(--bsc-border);letter-spacing:.02em}.bsc-error{font-size:0.76rem!important;font-weight:600;color:var(--bsc-danger)!important;margin-top:.4rem;min-height:1.1em;line-height:1.4}.bsc-btn-calc{display:flex;align-items:center;justify-content:center;gap:.5rem;width:100%;padding:.95rem 1.5rem;margin:1rem 0;background:var(--bsc-primary)!important;color:var(--bsc-white)!important;border:none;border-radius:var(--bsc-radius);font-size:1rem;font-weight:700;letter-spacing:.01em;transition:background var(--bsc-transition),transform 0.15s,box-shadow var(--bsc-transition);box-shadow:0 4px 14px rgb(0 114 206 / .35);cursor:pointer}.bsc-btn-calc:hover{background:var(--bsc-primary-deep)!important;box-shadow:0 6px 22px rgb(0 114 206 / .45)}.bsc-btn-calc:active{transform:translateY(1px);box-shadow:0 2px 8px rgb(0 114 206 / .3)}.bsc-btn-calc:focus-visible{outline:3px solid rgb(0 114 206 / .5);outline-offset:2px}.bsc-btn-calc svg{transition:transform var(--bsc-transition);flex-shrink:0}.bsc-btn-calc:hover svg{transform:translateX(4px)}.bsc-results{display:flex;flex-direction:column;gap:var(--bsc-spacing);animation:bsc-fade-up 0.45s cubic-bezier(.22,.68,0,1.2) forwards}@keyframes bsc-fade-up{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}.bsc-divider{display:flex;align-items:center;gap:.75rem;color:var(--bsc-text-muted)!important;font-size:0.72rem!important;font-weight:700;text-transform:uppercase;letter-spacing:.1em}.bsc-divider::before,.bsc-divider::after{content:"";flex:1;height:1px;background:var(--bsc-border)}.bsc-section-title{display:flex;align-items:center;gap:.5rem;font-size:0.75rem!important;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--bsc-text-muted)!important;margin-bottom:.75rem}.bsc-badge-tip{font-size:0.68rem!important;font-weight:700;background:var(--bsc-secondary)!important;color:white!important;padding:.12rem .5rem;border-radius:20px;text-transform:none;letter-spacing:.01em}.bsc-result-primary{background:linear-gradient(140deg,var(--bsc-primary) 0%,var(--bsc-primary-deep) 100%);border-radius:var(--bsc-radius);padding:2rem 1.5rem 1.75rem;text-align:center;color:white!important;position:relative;overflow:hidden}.bsc-result-primary::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 75% 15%,rgb(255 255 255 / .14) 0%,transparent 55%);pointer-events:none}.bsc-result-primary::after{content:"";position:absolute;right:-2.5rem;bottom:-2.5rem;width:10rem;height:10rem;border-radius:50%;background:rgb(255 255 255 / .05);pointer-events:none}.bsc-result-label{font-size:0.72rem!important;font-weight:700;text-transform:uppercase;letter-spacing:.12em;opacity:.75;margin-bottom:.4rem;position:relative}.bsc-result-size{font-size:clamp(3rem, 10vw, 4rem)!important;font-weight:700;line-height:1;letter-spacing:-.025em;margin-bottom:.5rem;position:relative}.bsc-result-sub{font-size:0.8rem!important;opacity:.7;position:relative}.bsc-intl-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--bsc-gap);margin-bottom:.6rem}.bsc-intl-card{background:var(--bsc-bg)!important;border:1px solid var(--bsc-border);border-radius:var(--bsc-radius);padding:.875rem .5rem;text-align:center;transition:all var(--bsc-transition)}.bsc-intl-card.bsc-intl-active{border-color:var(--bsc-primary);background:var(--bsc-secondary-light)!important}.bsc-intl-region{display:block;font-size:0.64rem!important;font-weight:800;text-transform:uppercase;letter-spacing:.1em;color:var(--bsc-text-muted)!important;margin-bottom:.3rem}.bsc-intl-val{display:block;font-size:1.5rem!important;font-weight:700;color:var(--bsc-text)!important;letter-spacing:-.015em;line-height:1.2}.bsc-intl-active .bsc-intl-val{color:var(--bsc-primary)!important}.bsc-intl-note{font-size:0.73rem!important;color:var(--bsc-text-muted)!important;line-height:1.5}.bsc-sister-desc{font-size:0.78rem!important;color:var(--bsc-text-muted)!important;margin-bottom:.8rem;line-height:1.55}.bsc-sister-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--bsc-gap)}.bsc-sister-card{border-radius:var(--bsc-radius);padding:1rem .5rem .875rem;text-align:center;border:1px solid #fff0;transition:transform var(--bsc-transition),box-shadow var(--bsc-transition)}.bsc-sister-card:hover{transform:translateY(-2px);box-shadow:var(--bsc-shadow-sm)}.bsc-sister-tight{background:#fffbeb!important;border-color:#fcd34d!important}.bsc-sister-perfect{background:var(--bsc-secondary-light)!important;border-color:var(--bsc-primary)!important;box-shadow:0 0 0 2px rgb(0 114 206 / .1)}.bsc-sister-loose{background:#f0fdf4!important;border-color:#86efac!important}.bsc-sister-tag{font-size:0.62rem!important;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--bsc-text-muted)!important;margin-bottom:.35rem}.bsc-sister-size{font-size:1.75rem!important;font-weight:700;color:var(--bsc-text)!important;letter-spacing:-.015em;line-height:1.2}.bsc-sister-perfect .bsc-sister-size{color:var(--bsc-primary)!important}.bsc-sister-note{font-size:0.67rem!important;color:var(--bsc-text-muted)!important;margin-top:.25rem;font-weight:500}.bsc-tips-grid{display:flex;flex-direction:column;gap:.45rem}.bsc-tip-item{display:flex;align-items:flex-start;gap:.625rem;padding:.75rem .875rem;background:var(--bsc-bg)!important;border:1px solid var(--bsc-border);border-radius:var(--bsc-radius);font-size:0.8rem!important;color:var(--bsc-text)!important;line-height:1.55;animation:bsc-fade-up 0.4s ease both}.bsc-tip-item:nth-child(2){animation-delay:0.06s}.bsc-tip-item:nth-child(3){animation-delay:0.12s}.bsc-tip-item:nth-child(4){animation-delay:0.18s}.bsc-tip-icon{flex-shrink:0;font-size:1rem;line-height:1.4}.bsc-actions{display:flex;gap:.5rem;flex-wrap:wrap}.bsc-btn-action{flex:1;min-width:fit-content;display:inline-flex;align-items:center;justify-content:center;gap:.4rem;padding:.85rem 1rem;border-radius:var(--bsc-radius);font-size:0.81rem!important;font-weight:600;border:1px solid #fff0;transition:all var(--bsc-transition);white-space:nowrap;cursor:pointer}.bsc-btn-action:active{transform:translateY(1px)}.bsc-btn-action:focus-visible{outline:2px solid var(--bsc-primary);outline-offset:2px}.bsc-btn-pdf{background:var(--bsc-primary)!important;color:white!important;border-color:var(--bsc-primary)!important;box-shadow:0 2px 8px rgb(0 114 206 / .25)}.bsc-btn-pdf:hover{background:var(--bsc-primary-deep)!important;border-color:var(--bsc-primary-deep)!important}.bsc-btn-copy{background:var(--bsc-white)!important;color:var(--bsc-primary)!important;border-color:var(--bsc-primary)!important}.bsc-btn-copy:hover{background:var(--bsc-secondary-light)!important}.bsc-btn-reset{background:var(--bsc-white)!important;color:var(--bsc-danger)!important;border-color:var(--bsc-danger)!important}.bsc-btn-reset:hover{background:#fef2f2!important}.bsc-modal-overlay{position:fixed;inset:0;background:rgb(0 0 0 / .48)!important;display:flex;align-items:center;justify-content:center;z-index:9990;padding:1rem;animation:bsc-fade-in 0.2s ease;backdrop-filter:blur(2px)}@keyframes bsc-fade-in{from{opacity:0}to{opacity:1}}.bsc-modal{background:var(--bsc-white)!important;border-radius:18px;padding:2.25rem 2rem;max-width:360px;width:100%;box-shadow:var(--bsc-shadow-lg);text-align:center;animation:bsc-modal-in 0.25s cubic-bezier(.34,1.56,.64,1) forwards}@keyframes bsc-modal-in{from{opacity:0;transform:scale(.92) translateY(8px)}to{opacity:1;transform:scale(1) translateY(0)}}.bsc-modal-icon{font-size:2rem!important;display:block;margin-bottom:.5rem;color:var(--bsc-text-muted)!important}.bsc-modal-title{font-size:1.6rem!important;font-weight:700;color:var(--bsc-text)!important;margin-bottom:.5rem}.bsc-modal-msg{font-size:0.85rem!important;color:var(--bsc-text-muted)!important;margin-bottom:1.5rem;line-height:1.55}.bsc-modal-actions{display:flex;gap:.6rem;justify-content:center}.bsc-modal-cancel,.bsc-modal-confirm{padding:.6rem 1.4rem;border-radius:10px;font-weight:700;font-size:0.875rem!important;border:1px solid;transition:all var(--bsc-transition);cursor:pointer}.bsc-modal-cancel{background:var(--bsc-white)!important;color:var(--bsc-text)!important;border-color:var(--bsc-border)!important;box-shadow:var(--bsc-shadow-sm)}.bsc-modal-cancel:hover{background:var(--bsc-bg)!important}.bsc-modal-confirm{background:var(--bsc-danger)!important;color:white!important;border-color:var(--bsc-danger)!important}.bsc-modal-confirm:hover{background:#c0392b!important;border-color:#c0392b!important}.bsc-toast{position:fixed;bottom:1.5rem;left:50%;transform:translateX(-50%) translateY(8px);background:var(--bsc-text)!important;color:white!important;padding:.6rem 1.25rem;border-radius:30px;font-size:0.82rem!important;font-weight:600;opacity:0;pointer-events:none;transition:opacity 0.28s ease,transform 0.28s ease;z-index:10000;white-space:nowrap;box-shadow:var(--bsc-shadow-md);max-width:calc(100vw - 2rem);text-align:center}.bsc-toast.bsc-toast-show{opacity:1;transform:translateX(-50%) translateY(0)}.bsc-toast.bsc-toast-success{background:var(--bsc-secondary)!important}.bsc-toast.bsc-toast-error{background:var(--bsc-danger)!important}@media (max-width:778px){.bsc-inputs{flex-direction:column}}@media (max-width:420px){.bsc-settings{flex-direction:column}.bsc-intl-grid{grid-template-columns:repeat(2,1fr)}.bsc-sister-grid{grid-template-columns:1fr}.bsc-actions{flex-direction:column}.bsc-btn-action{min-width:unset;width:100%}}@media (min-width:421px) and (max-width:540px){.bsc-actions{flex-wrap:wrap}.bsc-btn-pdf{flex:1 1 100%}.bsc-btn-copy,.bsc-btn-reset{flex:1}}@media (min-width:541px){.bsc-actions{flex-wrap:nowrap}}@media print{body{background:#fff;padding:0}.bsc-container{box-shadow:none;border:1px solid #ccc}.bsc-actions{display:none}}