.hbg-wrap{--bg:#080d14;--panel:#111925;--panel2:#0d1520;--text:#edf4fb;--muted:#a9b7c8;--line:#273648;--accent:#38bdf8;--accent2:#8b5cf6;--good:#123e2b;--mid:#4b3512;--high:#4a1f25;max-width:1680px;margin:0 auto;padding:clamp(18px,3vw,52px);color:var(--text);background:radial-gradient(circle at 15% 0%,rgba(56,189,248,.13),transparent 32%),linear-gradient(180deg,#07101a,#080d14 35%);border-radius:26px;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65;box-sizing:border-box}.hbg-wrap *{box-sizing:border-box}.hbg-wrap h1,.hbg-wrap h2,.hbg-wrap h3{color:#fff;line-height:1.12;margin:0 0 .7em}.hbg-wrap h1{font-size:clamp(2.4rem,5vw,5.8rem);letter-spacing:-.045em;max-width:1050px}.hbg-wrap h2{font-size:clamp(1.65rem,3vw,3rem);letter-spacing:-.025em}.hbg-wrap h3{font-size:1.15rem}.hbg-wrap p{color:var(--muted);margin:.4rem 0 1rem}.hbg-hero{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(300px,.7fr);gap:clamp(28px,5vw,80px);align-items:center;min-height:560px;padding:clamp(30px,5vw,82px);background:linear-gradient(135deg,rgba(17,25,37,.98),rgba(8,13,20,.86));border:1px solid var(--line);border-radius:28px;overflow:hidden;position:relative}.hbg-eyebrow,.hbg-kicker{text-transform:uppercase;letter-spacing:.15em;font-size:.78rem;font-weight:800;color:var(--accent)!important}.hbg-lead{font-size:clamp(1.05rem,1.5vw,1.35rem);max-width:850px}.hbg-hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.hbg-button{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:999px;background:var(--accent);color:#06131d!important;-webkit-text-fill-color:#06131d!important;text-decoration:none!important;font-weight:900;text-shadow:none!important}.hbg-button:link,.hbg-button:visited,.hbg-button:hover,.hbg-button:focus{color:#06131d!important;-webkit-text-fill-color:#06131d!important}.hbg-button:hover,.hbg-button:focus{background:#7dd3fc}.hbg-button.secondary{background:transparent;color:#8fd3ff!important;-webkit-text-fill-color:#8fd3ff!important;border:1px solid #35516c}.hbg-button.secondary:link,.hbg-button.secondary:visited,.hbg-button.secondary:hover,.hbg-button.secondary:focus{color:#bfe8ff!important;-webkit-text-fill-color:#bfe8ff!important}.hbg-button.secondary:hover,.hbg-button.secondary:focus{background:rgba(56,189,248,.12);border-color:var(--accent)}.hbg-hero-visual{position:relative;min-height:360px;display:grid;grid-template-columns:1fr 1fr;gap:15px;align-content:center}.hbg-hero-visual span{display:flex;align-items:center;justify-content:center;min-height:95px;background:rgba(255,255,255,.035);border:1px solid var(--line);border-radius:22px;font-size:2rem;font-weight:900}.hbg-toroid{position:absolute;width:210px;height:210px;border:48px solid rgba(56,189,248,.18);border-radius:50%;left:50%;top:50%;transform:translate(-50%,-50%);box-shadow:0 0 70px rgba(56,189,248,.12)}.hbg-nav{position:sticky;top:12px;z-index:20;display:flex;gap:8px;overflow:auto;padding:10px;margin:18px 0 44px;background:rgba(8,13,20,.9);backdrop-filter:blur(16px);border:1px solid var(--line);border-radius:18px}.hbg-nav a{white-space:nowrap;color:#dce8f3!important;text-decoration:none!important;padding:9px 14px;border-radius:12px}.hbg-nav a:hover{background:rgba(56,189,248,.12)}.hbg-section{margin:clamp(54px,8vw,110px) 0}.hbg-section-head{max-width:980px;margin-bottom:28px}.hbg-section-head>p:last-child{font-size:1.08rem}.hbg-grid{display:grid;gap:20px}.hbg-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.hbg-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.hbg-grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.hbg-card{background:linear-gradient(180deg,var(--panel),var(--panel2));border:1px solid var(--line);border-radius:22px;padding:clamp(22px,3vw,36px);overflow:hidden}.hbg-card.compact{padding:22px}.hbg-number{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:12px;background:rgba(56,189,248,.12);color:var(--accent);font-weight:900;margin-bottom:18px}.hbg-list{padding-left:1.2rem;color:var(--muted)}.hbg-list li{margin:.5rem 0}.hbg-diagram-wide{padding:12px}.hbg-svg{width:100%;height:auto;display:block;color:var(--accent)}.hbg-svg text{fill:#dfe9f3;font-family:inherit;font-size:18px}.hbg-svg .svg-small{fill:#9fb0c3;font-size:15px}.hbg-svg .svg-big{font-size:42px;font-weight:900;fill:#fff}.svg-bg{fill:#0a111b;stroke:#273648}.svg-box{fill:#111c29;stroke:#38bdf8;stroke-width:2}.svg-core{fill:none;stroke:#4a5666;stroke-width:38}.svg-core.thick{stroke-width:62}.svg-hole{fill:#0a111b;stroke:#718096;stroke-width:2}.svg-wire,.svg-coax,.svg-hot,.svg-cold,.svg-third{fill:none;stroke-width:12;stroke-linecap:round}.svg-wire,.svg-coax{stroke:#738399}.svg-hot{stroke:#f0b429}.svg-cold{stroke:#38bdf8}.svg-third{stroke:#fb7185}.winding{stroke-width:15}.hbg-table-scroll{overflow:auto;border:1px solid var(--line);border-radius:18px}.hbg-wrap table{width:100%;border-collapse:collapse;min-width:760px;background:#0b121c}.hbg-wrap th,.hbg-wrap td{padding:14px 16px;text-align:left;border-bottom:1px solid #223043;color:#dfe8f2}.hbg-wrap thead th{background:#121c28;color:#fff;position:sticky;top:0;z-index:2}.hbg-wrap tbody tr:hover{background:rgba(56,189,248,.04)}.hbg-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:18px}.hbg-chip{border:1px solid var(--line);border-radius:999px;padding:7px 12px;color:#c9d6e4;font-size:.8rem;white-space:nowrap}.hbg-swr-explainer{display:grid;grid-template-columns:1fr 1.3fr;gap:20px;align-items:center;background:#0d1621;border:1px solid var(--line);border-radius:20px;padding:22px;margin-bottom:20px}.hbg-swr-scale{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.hbg-swr-scale span{padding:12px;border-radius:12px;text-align:center;color:#fff}.hbg-swr-scale small{color:#d6deea}.hbg-swr-table{min-width:1160px!important;font-size:.86rem}.hbg-swr-table th,.hbg-swr-table td{text-align:center!important;padding:11px 9px!important;white-space:nowrap}.hbg-swr-table tbody th{position:sticky;left:0;background:#111b27;z-index:1}.swr-good{background:var(--good)!important}.swr-mid{background:var(--mid)!important}.swr-high{background:var(--high)!important}.swr-unknown{background:#252b35!important}.hbg-note{font-size:.92rem;padding:14px 16px;border-left:3px solid var(--accent);background:rgba(56,189,248,.06);margin-top:18px!important}.hbg-wrap label{display:block;color:#dce7f1;font-weight:700;margin:0 0 8px}.hbg-wrap input,.hbg-wrap select{width:100%;border:1px solid #33465b;background:#08111b;color:#fff;border-radius:12px;padding:12px 14px;font-size:1rem}.hbg-results{display:grid;gap:10px;margin:18px 0}.hbg-results>div{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px solid #253346}.hbg-results span{color:var(--muted)}.hbg-results strong{color:#fff}.hbg-wrap small{color:#91a2b5}.hbg-decision{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.hbg-decision>div{position:relative;background:linear-gradient(180deg,#111b28,#0b131d);border:1px solid var(--line);border-radius:18px;padding:24px}.hbg-decision>div:not(:last-child):after{content:"→";position:absolute;right:-13px;top:50%;transform:translateY(-50%);z-index:2;color:var(--accent);font-size:1.4rem}.hbg-decision strong,.hbg-decision span{display:block}.hbg-decision span{color:var(--muted);margin-top:8px}.hbg-footer{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:70px;padding:24px 4px;border-top:1px solid var(--line);color:#8fa0b3;font-size:.9rem}.hbg-footer a{color:var(--accent)!important}.calculators .hbg-card{min-height:100%}@media(max-width:1100px){.hbg-hero{grid-template-columns:1fr;min-height:auto}.hbg-hero-visual{min-height:270px}.hbg-grid.three,.hbg-grid.four,.hbg-decision{grid-template-columns:repeat(2,minmax(0,1fr))}.hbg-decision>div:after{display:none}}@media(max-width:760px){.hbg-wrap{padding:12px;border-radius:0}.hbg-hero{padding:28px 20px;border-radius:20px}.hbg-hero-visual{min-height:210px}.hbg-hero-visual span{min-height:72px;font-size:1.45rem}.hbg-toroid{width:150px;height:150px;border-width:34px}.hbg-grid.two,.hbg-grid.three,.hbg-grid.four,.hbg-decision,.hbg-swr-explainer{grid-template-columns:1fr}.hbg-swr-scale{grid-template-columns:1fr}.hbg-card{padding:20px}.hbg-head{display:block}.hbg-chip{display:inline-block;margin-top:8px}.hbg-nav{top:4px;margin-bottom:28px}.hbg-wrap h1{font-size:2.45rem}.hbg-svg text{font-size:14px}.hbg-svg .svg-small{font-size:12px}.hbg-svg .svg-big{font-size:32px}}