.calc-page{padding:48px 0 64px}.calc-page *,.calc-page *:before,.calc-page *:after{box-sizing:border-box}.breadcrumb{display:flex;gap:6px;align-items:center;justify-content:center;font-size:13px;color:var(--c-text-muted);margin-bottom:14px;flex-wrap:wrap}.breadcrumb a{color:var(--c-text-muted);text-decoration:none}.breadcrumb a:hover{color:var(--c-accent)}.breadcrumb .bc-sep{color:var(--c-border)}.page-header{text-align:center;margin-bottom:36px}.page-header h1{font-size:36px;font-weight:700;letter-spacing:-.8px;line-height:1.2;margin-bottom:10px}.page-header .subtitle{font-size:16px;color:var(--c-text-secondary);max-width:780px;margin:0 auto;line-height:1.7}.page-header .subtitle strong{color:var(--c-accent)}.calc-layout{display:grid;grid-template-columns:360px 1fr;gap:24px;align-items:start}.calc-layout>*{min-width:0}.input-panel{background:linear-gradient(135deg,#f0f9ff,#e0f2fe);border:1px solid #bae6fd;border-radius:16px;padding:26px}.panel-title{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.8px;color:#0369a1;margin-bottom:18px}.field{margin-bottom:14px}.field-label{display:block;font-size:14px;font-weight:600;color:var(--c-text);margin-bottom:4px}.field-input,.field-select{width:100%;padding:10px 14px;border:1px solid #bae6fd;border-radius:10px;font-size:14px;font-family:var(--font);background:#fff;color:var(--c-text);transition:all .2s}.field-input:focus,.field-select:focus{outline:none;border-color:#0369a1;box-shadow:0 0 0 3px #bae6fd80}.field-select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%230369a1' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;cursor:pointer}.mode-row{display:flex;gap:8px}.mode-opt{flex:1;padding:12px;border:2px solid var(--c-border-light);border-radius:10px;cursor:pointer;text-align:center;background:#fff;transition:all .15s}.mode-opt .mo-icon{font-size:22px;display:block;margin-bottom:4px}.mode-opt .mo-name{font-size:13px;font-weight:600;color:var(--c-text)}.mode-opt.active{border-color:#0369a1;background:#e0f2fe}.calc-btn{width:100%;padding:13px;background:#0369a1;color:#fff;border:none;border-radius:10px;font-size:15px;font-weight:600;font-family:var(--font);cursor:pointer;transition:all .2s;margin-top:4px}.calc-btn:hover{background:#075985;transform:translateY(-1px)}.preview-panel{background:var(--c-surface);border:1px solid var(--c-border);border-radius:16px;padding:26px;position:sticky;top:80px}.empty-state{text-align:center;padding:40px 16px}.empty-state .es-icon{font-size:60px;display:block;margin-bottom:12px}.empty-state p{font-size:15px;color:var(--c-text-secondary);line-height:1.6}.result-card{background:var(--c-bg);border:1px solid var(--c-border-light);border-radius:14px;padding:20px}.weight-display{text-align:center;padding:18px;background:linear-gradient(135deg,#f0f9ff,#e0f2fe);border:1px solid #bae6fd;border-radius:12px;margin-bottom:16px}.weight-display .wd-label{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.6px;color:#0369a1}.weight-display .wd-value{font-size:48px;font-weight:800;color:#0369a1;margin-top:4px}.weight-display .wd-sub{font-size:14px;color:#075985;margin-top:4px}.result-rows{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}.result-row{display:flex;justify-content:space-between;padding:10px 14px;background:var(--c-surface);border:1px solid var(--c-border-light);border-radius:8px;font-size:14px}.result-row .rr-label{color:var(--c-text-secondary);font-weight:600}.result-row .rr-value{color:var(--c-text);font-weight:700}.btn-row{display:flex;gap:8px;margin-top:14px}.btn-row button{flex:1;padding:11px;border-radius:10px;font-size:13px;font-weight:600;cursor:pointer;border:1px solid var(--c-border);background:var(--c-surface);color:var(--c-text);font-family:var(--font);transition:all .2s}.btn-row button:hover{border-color:#0369a1;color:#0369a1}.safety-note{padding:12px 14px;background:#fef2f2;border:1px solid #fecaca;border-radius:10px;font-size:12px;color:#991b1b;line-height:1.6;margin-top:12px}.disclaimer-note{font-size:12px;color:var(--c-text-secondary);line-height:1.6;padding-top:12px;border-top:1px solid var(--c-border-light);margin-top:14px}.toc-section{padding:8px 0 0}.toc-bar{display:flex;gap:6px;flex-wrap:wrap;justify-content:center;padding:14px 16px;background:var(--c-surface);border:1px solid var(--c-border);border-radius:12px}.toc-link{padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;color:var(--c-text-secondary);text-decoration:none;background:var(--c-bg);border:1px solid var(--c-border-light);transition:all .2s;white-space:nowrap}.toc-link:hover{background:var(--c-accent-light);border-color:var(--c-accent-muted);color:var(--c-accent)}.content-section{padding:48px 0 80px;background:var(--c-bg)}.content-wrap{max-width:780px;margin:0 auto}.content-wrap h2{font-size:26px;font-weight:700;margin-top:48px;margin-bottom:14px;scroll-margin-top:90px}.content-wrap h3{font-size:18px;font-weight:600;margin-top:26px;margin-bottom:8px}.content-wrap p{font-size:17px;color:var(--c-text-secondary);line-height:1.9;margin-bottom:18px}.content-wrap ul,.content-wrap ol{font-size:17px;color:var(--c-text-secondary);line-height:2.1;padding-left:20px;margin-bottom:22px}.content-wrap strong{color:var(--c-text)}.content-wrap table{width:100%;border-collapse:collapse;font-size:14px;margin-bottom:26px}.content-wrap th{text-align:left;padding:10px 14px;font-weight:600;border-bottom:2px solid var(--c-border)}.content-wrap td{padding:10px 14px;border-bottom:1px solid var(--c-border-light)}.wb-figure{margin:0 0 24px}.wb-figure svg{width:100%;height:auto;display:block;background:var(--c-surface);border:1px solid var(--c-border);border-radius:12px}.wb-figure figcaption{font-size:14px;color:var(--c-text-secondary);margin-top:10px;line-height:1.7}.wb-legend{display:flex;gap:18px;flex-wrap:wrap;font-size:14px;color:var(--c-text-secondary);margin-top:10px}.wb-legend span{display:inline-flex;align-items:center;gap:6px}.wb-legend i{width:18px;height:12px;border-radius:3px;display:inline-block}.wb-calc .safety-note,.wb-calc .disclaimer-note{font-size:14px}.wb-calc .weight-display .wd-label{font-size:13px}@media(max-width:560px){.wb-calc{padding-bottom:56px}.wb-calc .calc-layout{gap:16px}.wb-calc .input-panel{padding:16px}.wb-calc .preview-panel{padding:14px 14px 16px;border-radius:14px}.wb-calc .result-card{padding:0;background:transparent;border:none;border-radius:0}.wb-calc .weight-display{padding:14px 10px;margin-bottom:14px}.wb-calc .weight-display .wd-value{font-size:38px}.wb-calc .result-row{flex-direction:column;align-items:flex-start;gap:2px;padding:10px 12px}.wb-calc .btn-row button{font-size:14px}}@media(max-width:820px){.calc-layout{grid-template-columns:1fr}.preview-panel{position:static}.page-header h1{font-size:26px}}@media(max-width:480px){.calc-page{padding:28px 0 40px}.page-header h1{font-size:22px}.toc-bar{justify-content:flex-start;overflow-x:auto;flex-wrap:nowrap}}