body::before{content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(ellipse 920px 560px at 8% -6%,var(--cat-color-soft),transparent 60%),radial-gradient(ellipse 720px 520px at 97% 3%,rgba(37,99,235,0.04),transparent 60%)}.breadcrumb{padding:calc(var(--header-h) + 22px) 0 0}.preview-banner{margin-top:var(--header-h);background:#fef3c7;color:#78350f;padding:8px 16px;text-align:center;font:600 12.5px/1.4 var(--sans);border-bottom:1px solid #fcd34d}.preview-banner + .breadcrumb{padding-top:22px}.breadcrumb nav{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-3)}.breadcrumb a{color:var(--ink-3);text-decoration:none;transition:color 0.15s ease}.breadcrumb a:hover{color:var(--cat-color)}.breadcrumb .sep{color:var(--ink-3)}.breadcrumb .current{color:var(--ink-3)}.top-bar{padding:16px 0 0}.calc-head{padding-bottom:0}.calc-head h1{font-size:34px;font-weight:700;line-height:1.14;letter-spacing:-0.022em;opacity:0;animation:fadeUp 0.4s 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