:root {
    --elec-blue:#0ea5e9;--elec-light:#f0f9ff;--elec-mid:#bae6fd;
  }
/* ── Layout ── */
  .hero{padding:120px 24px 72px;position:relative;overflow:hidden;background:#ffffff;border-bottom:1px solid var(--border);}
  .hero .container{max-width:800px;margin:0 auto;}
  .hero>.container{position:relative;z-index:1;}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:11px;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;color:var(--elec);background:var(--elec-light);border:1px solid var(--elec-mid);border-radius:100px;padding:6px 16px;margin-bottom:24px;}
  .hero-title{font-size:clamp(32px,5vw,52px);font-weight:300;line-height:1.15;letter-spacing:-0.02em;margin:0 0 20px;}
  .hero-sub{font-size:18px;color:var(--text2);line-height:1.7;margin:0 0 36px;}
  .hero-stats{display:flex;flex-wrap:wrap;gap:24px;}
  .hero-stat{background:#fff;border:1px solid var(--border);border-radius:16px;padding:20px 24px;flex:1;min-width:140px;}
  .hero-stat-num{font-size:28px;font-weight:300;color:var(--elec);line-height:1;}
  .hero-stat-label{font-size:12px;color:var(--muted2);margin-top:4px;font-weight:500;}

  .container{max-width:1160px;margin:0 auto;padding:0 24px;}
  section{padding:72px 24px;}

  /* ── Section Title ── */
  .sec-title{font-size:clamp(24px,3.5vw,36px);font-weight:800;letter-spacing:-0.02em;margin:0 0 8px;}
  .sec-sub{font-size:16px;color:var(--text2);line-height:1.7;margin:0 0 40px;}

  /* ── Cards ── */
  .card-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
  @media(max-width:768px){.card-grid{grid-template-columns:1fr;}}
  .card{background:var(--bg);border:1px solid var(--border);border-radius:20px;padding:28px;transition:box-shadow .2s;}
  .card:hover{box-shadow:0 8px 32px rgba(0,0,0,0.08);}
  .card-head{display:flex;align-items:center;gap:14px;margin-bottom:20px;}
  .card-icon{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0;}
  .card-icon.elec{background:var(--elec-light);color:var(--elec);}
  .card-icon.green{background:#f0fdf4;color:#16a34a;}
  .card-icon.warn{background:var(--warn-light);color:var(--warn);}
  .card-icon.danger{background:var(--danger-light);color:var(--danger);}
  .card-title{font-size:18px;font-weight:800;color:var(--text);}
  .card-badge{font-size:10px;font-weight:700;letter-spacing:0.06em;text-transform:uppercase;padding:3px 10px;border-radius:100px;margin-top:4px;display:inline-block;}
  .badge-elec{background:var(--elec-light);color:var(--elec);}
  .badge-green{background:#f0fdf4;color:#16a34a;}
  .card-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px;}
  .card-list li{font-size:14px;color:var(--text2);display:flex;align-items:flex-start;gap:8px;line-height:1.5;}
  .card-list li::before{content:'✓';color:var(--success);font-weight:700;flex-shrink:0;margin-top:1px;}
  .card-list li.x::before{content:'✗';color:var(--danger);}
  .card-list li.dot::before{content:'•';color:var(--muted);font-size:18px;}

  /* ── Compare Table ── */
  .compare-wrap{overflow-x:auto;}
  table.compare{width:100%;border-collapse:collapse;font-size:14px;}
  table.compare th{padding:14px 16px;background:var(--bg2);font-weight:700;font-size:12px;letter-spacing:0.04em;text-transform:uppercase;color:var(--muted2);border-bottom:2px solid var(--border2);text-align:left;white-space:nowrap;}
  table.compare td{padding:14px 16px;border-bottom:1px solid var(--border);color:var(--text2);vertical-align:top;line-height:1.5;}
  table.compare tr:hover td{background:var(--bg2);}
  table.compare .tag{display:inline-block;font-size:11px;font-weight:700;padding:3px 9px;border-radius:100px;}
  table.compare .tag-elec{background:var(--elec-light);color:var(--elec);}
  table.compare .tag-green{background:#f0fdf4;color:#16a34a;}
  table.compare .tag-warn{background:var(--warn-light);color:#92400e;}
  table.compare td strong{color:var(--text);font-weight:700;}

  /* ── Step Flow ── */
  .steps{display:flex;flex-direction:column;gap:0;}
  .step{display:flex;gap:24px;position:relative;}
  .step:not(:last-child)::before{content:'';position:absolute;left:23px;top:48px;bottom:-1px;width:2px;background:var(--border2);z-index:0;}
  .step-num{width:48px;height:48px;border-radius:50%;background:var(--elec);color:#fff;font-size:18px;font-weight:300;display:flex;align-items:center;justify-content:center;flex-shrink:0;position:relative;z-index:1;margin-bottom:24px;}
  .step-body{padding-top:8px;padding-bottom:24px;}
  .step-title{font-size:18px;font-weight:800;margin:0 0 8px;}
  .step-desc{font-size:14px;color:var(--text2);line-height:1.6;margin:0;}
  .step-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;}
  .meta-tag{font-size:11px;font-weight:700;padding:4px 10px;border-radius:100px;background:var(--elec-light);color:var(--elec);}
  .meta-tag.warn{background:var(--warn-light);color:#92400e;}
  .meta-tag.green{background:#f0fdf4;color:#15803d;}

  /* ── Cost Table ── */
  .cost-table{width:100%;border-collapse:collapse;font-size:14px;}
  .cost-table th{padding:12px 16px;background:var(--elec-light);font-weight:700;font-size:12px;letter-spacing:0.04em;text-transform:uppercase;color:var(--elec);border-bottom:2px solid var(--elec-mid);text-align:left;}
  .cost-table td{padding:14px 16px;border-bottom:1px solid var(--border);color:var(--text2);vertical-align:top;line-height:1.5;}
  .cost-table tr:hover td{background:var(--elec-light);}
  .cost-table .cost-val{font-weight:700;color:var(--text);}
  .cost-table .cost-note{font-size:12px;color:var(--muted);}

  /* ── Pitfall Blocks ── */
  .pitfall-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;}
  .pitfall{background:var(--danger-light);border:1px solid var(--danger-mid);border-radius:16px;padding:24px;}
  .pitfall-icon{font-size:28px;margin-bottom:12px;}
  .pitfall-title{font-size:15px;font-weight:800;color:var(--text);margin:0 0 8px;}
  .pitfall-desc{font-size:13px;color:var(--text2);line-height:1.6;margin:0;}

  /* ── Solution Strip ── */
  .solution-strip{background:linear-gradient(135deg,var(--elec) 0%,#1d4ed8 100%);border-radius:24px;padding:48px 40px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;}
  .solution-strip-text h2{font-size:28px;font-weight:300;color:#fff;margin:0 0 8px;}
  .solution-strip-text p{font-size:16px;color:rgba(255,255,255,0.85);margin:0;line-height:1.6;}
  .solution-feats{display:flex;flex-direction:column;gap:10px;flex-shrink:0;}
  .solution-feat{display:flex;align-items:center;gap:10px;color:#fff;font-size:14px;font-weight:500;}
  .solution-feat i{font-size:16px;color:var(--elec-mid);}
  @media(max-width:768px){.solution-strip{padding:32px 24px;}.solution-strip-text h2{font-size:22px;}}

  /* ── CTA ── */
  .cta-wrap{text-align:center;}
  .btn-primary{display:inline-flex;align-items:center;gap:8px;background:var(--elec);color:#fff;font-size:15px;font-weight:700;padding:14px 32px;border-radius:12px;text-decoration:none;transition:background .2s,transform .15s;box-shadow:0 4px 16px rgba(37,99,235,0.3);}
  .btn-primary:hover{background:var(--clr-primary);transform:translateY(-2px);}
  .btn-outline{display:inline-flex;align-items:center;gap:8px;background:transparent;color:var(--elec);font-size:15px;font-weight:700;padding:14px 32px;border-radius:12px;text-decoration:none;border:2px solid var(--elec-mid);transition:all .2s;margin-left:12px;}
  .btn-outline:hover{background:var(--elec-light);}

  /* ── Related ── */
  .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  @media(max-width:768px){.related-grid{grid-template-columns:1fr;}}
  .related-card{border:1px solid var(--border);border-radius:16px;padding:24px;text-decoration:none;color:var(--text2);transition:all .2s;display:flex;flex-direction:column;gap:8px;}
  .related-card:hover{border-color:var(--elec-mid);box-shadow:0 4px 16px rgba(37,99,235,0.08);}
  .related-tag{font-size:10px;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;color:var(--elec);background:var(--elec-light);padding:3px 10px;border-radius:100px;width:fit-content;}
  .related-title{font-size:15px;font-weight:700;color:var(--text);line-height:1.4;}
  .related-desc{font-size:13px;color:var(--muted2);line-height:1.5;}

  /* ── Divider ── */
  .divider{height:1px;background:var(--border);margin:0;}

  /* ── Section alt bg ── */
  .bg-alt{background:var(--bg2);}

  /* ── KC badge ── */
  .kc-badge{display:inline-flex;align-items:center;gap:6px;background:var(--elec);color:#fff;font-size:12px;font-weight:700;padding:6px 14px;border-radius:100px;}

  /* ── Info box ── */
  .info-box{background:var(--elec-light);border:1px solid var(--elec-mid);border-radius:16px;padding:24px;display:flex;gap:16px;align-items:flex-start;}
  .info-box i{font-size:20px;color:var(--elec);flex-shrink:0;margin-top:2px;}
  .info-box p{margin:0;font-size:14px;color:var(--text2);line-height:1.6;}
  .info-box strong{color:var(--text);}

  /* ── Footer ── */
  footer{background:var(--text);color:rgba(255,255,255,0.7);padding:48px 24px;margin-top:0;}
  .footer-inner{max-width:1160px;margin:0 auto;display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:center;}
  .footer-brand{font-size:18px;font-weight:300;letter-spacing:0.06em;color:#fff;}
  .footer-brand span{color:var(--clr-primary);}
  .footer-links{display:flex;gap:20px;flex-wrap:wrap;}
  .footer-links a{font-size:13px;color:rgba(255,255,255,0.6);text-decoration:none;transition:color .2s;}
  .footer-links a:hover{color:#fff;}
  .footer-copy{font-size:12px;color:rgba(255,255,255,0.4);margin-top:16px;width:100%;}