*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body { font-family: 'DM Sans', sans-serif; background: #fff; color: #111827; }

  /* NAV */
  .nav {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 3rem; height: 72px; background: #fff;
    border-bottom: 1px solid #E5E7EB;
    position: sticky; top: 0; z-index: 100;
  }
  .logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
  .logo-img { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
  .logo-text { font-size: 15px; font-weight: 500; color: #111827; letter-spacing: -0.01em; }
  .logo-sub { font-size: 11px; color: #6B7280; letter-spacing: 0.04em; text-transform: uppercase; display: block; margin-top: 1px; }
  .nav-links { display: flex; gap: 2rem; list-style: none; align-items: center; }
  .nav-links a { font-size: 13.5px; color: #4B5563; text-decoration: none; font-weight: 400; transition: color 0.15s; }
  .nav-links a:hover { color: #111827; }
  .nav-cta {
    background: #111827; color: #fff !important; padding: 9px 20px;
    border-radius: 6px; font-weight: 500 !important; font-size: 13.5px !important;
    display: flex; align-items: center; gap: 6px;
  }
  .nav-cta:hover { background: #1f2937 !important; }

  /* HERO */
  .hero { display: grid; grid-template-columns: 1fr; min-height: 420px; position: relative; overflow: hidden; }
  .hero-video {
    position: absolute; inset: 0; width: 100%; height: 100%;
    object-fit: cover; z-index: 0;
  }
  .hero-overlay {
    position: absolute; inset: 0; z-index: 1;
    background:
      linear-gradient(rgba(17,24,39,0.5), rgba(17,24,39,0.5)),
      linear-gradient(90deg, rgba(185,28,28,0.55) 0%, rgba(185,28,28,0.4) 47%, rgba(29,78,216,0.4) 53%, rgba(29,78,216,0.55) 100%);
  }
  .hero-left {
    padding: 3.5rem 3rem; display: flex; flex-direction: column;
    justify-content: center; background: transparent;
    position: relative; z-index: 2;
  }
  .tag {
    display: inline-flex; align-items: center; gap: 6px; font-size: 12px;
    font-weight: 500; color: rgba(255,255,255,0.85); letter-spacing: 0.04em;
    text-transform: uppercase; margin-bottom: 1.5rem;
  }
  .tag i { font-size: 13px; color: rgba(255,255,255,0.7); }
  .h1 {
    font-family: 'DM Serif Display', serif; font-size: 52px; line-height: 1.08;
    color: #fff; letter-spacing: -0.02em; margin-bottom: 1.25rem;
    text-shadow: 0 1px 12px rgba(0,0,0,0.35);
  }
  .h1 .hot { color: #FCA5A5; }
  .h1 .cold { color: #93C5FD; }
  .hero-p { font-size: 15.5px; color: rgba(255,255,255,0.88); line-height: 1.7; max-width: 420px; margin-bottom: 2rem; font-weight: 300; }
  .btns { display: flex; gap: 12px; align-items: center; }
  .btn-primary {
    background: #fff; color: #111827; font-size: 14px; font-weight: 500;
    padding: 12px 24px; border-radius: 6px; border: none; cursor: pointer;
    display: inline-flex; align-items: center; gap: 8px; text-decoration: none;
    transition: background 0.15s;
  }
  .btn-primary:hover { background: #E5E7EB; }
  .btn-ghost {
    font-size: 14px; color: rgba(255,255,255,0.9); font-weight: 500;
    display: flex; align-items: center; gap: 6px; text-decoration: none;
  }
  .btn-ghost:hover { color: #fff; }

  .hero-brands { display: flex; align-items: center; gap: 1.25rem; margin-top: 2rem; }
  .hero-brands-l { font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.55); }
  .hero-brand { font-size: 14px; font-weight: 500; color: rgba(255,255,255,0.85); }

  /* TRUST BAR */
  .trust-bar { display: grid; grid-template-columns: repeat(4,1fr); border-top: 1px solid #E5E7EB; border-bottom: 1px solid #E5E7EB; }
  .trust-item { padding: 1.25rem 1.5rem; display: flex; align-items: center; gap: 0.9rem; border-right: 1px solid #E5E7EB; }
  .trust-item:last-child { border-right: none; }
  .trust-icon { width: 38px; height: 38px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
  .ti-red { background: #FEF2F2; color: #B91C1C; }
  .ti-blue { background: #EFF6FF; color: #1D4ED8; }
  .ti-gray { background: #F3F4F6; color: #374151; }
  .trust-title { font-size: 14px; font-weight: 500; color: #111827; }
  .trust-sub { font-size: 12px; color: #6B7280; font-weight: 300; }

  /* SERVICES */
  .services { padding: 3rem 3rem; background: #fff; }
  .sec-tag { font-size: 12px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: #6B7280; margin-bottom: 0.5rem; }
  .sec-h { font-family: 'DM Serif Display', serif; font-size: 32px; color: #111827; letter-spacing: -0.02em; margin-bottom: 1.75rem; }
  .svc-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: #E5E7EB; border: 1px solid #E5E7EB; border-radius: 12px; overflow: hidden; }
  .svc { background: #fff; padding: 1.4rem 1.5rem; transition: background 0.15s; }
  .svc:hover { background: #FAFAFA; }
  .svc-icon { width: 38px; height: 38px; border-radius: 8px; display: flex; align-items: center; justify-content: center; margin-bottom: 0.75rem; font-size: 18px; }
  .si-red { background: #FEF2F2; color: #B91C1C; }
  .si-blue { background: #EFF6FF; color: #1D4ED8; }
  .si-gray { background: #F3F4F6; color: #374151; }
  .svc-name { font-size: 15px; font-weight: 500; color: #111827; margin-bottom: 0.4rem; }
  .svc-desc { font-size: 13px; color: #6B7280; line-height: 1.6; font-weight: 300; }

  /* TEMP STRIP */
  .temp-strip { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid #E5E7EB; }
  .strip-heat { background: #FEF2F2; padding: 2rem 3rem; border-right: 1px solid #FECACA; display: flex; align-items: center; gap: 1.25rem; }
  .strip-cool { background: #EFF6FF; padding: 2rem 3rem; display: flex; align-items: center; gap: 1.25rem; }
  .strip-icon { width: 44px; height: 44px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 22px; flex-shrink: 0; }
  .strip-heat .strip-icon { background: #FEE2E2; color: #B91C1C; }
  .strip-cool .strip-icon { background: #DBEAFE; color: #1D4ED8; }
  .strip-title { font-size: 15px; font-weight: 500; margin-bottom: 3px; }
  .strip-heat .strip-title { color: #7F1D1D; }
  .strip-cool .strip-title { color: #1E3A8A; }
  .strip-sub { font-size: 13px; font-weight: 300; }
  .strip-heat .strip-sub { color: #B91C1C; }
  .strip-cool .strip-sub { color: #1D4ED8; }

  /* ABOUT */
  .about { padding: 4rem 3rem; background: #fff; border-top: 1px solid #E5E7EB; display: grid; grid-template-columns: 1.2fr 1fr; gap: 3rem; align-items: center; }
  .about-p { font-size: 15px; color: #4B5563; line-height: 1.8; font-weight: 300; margin-bottom: 1rem; max-width: 560px; }
  .about-card { background: #F9FAFB; border: 1px solid #E5E7EB; border-radius: 12px; padding: 1.5rem 2rem; }
  .about-row { display: flex; gap: 1rem; align-items: flex-start; padding: 1rem 0; border-bottom: 1px solid #E5E7EB; }
  .about-row:last-child { border-bottom: none; }
  .about-row i { font-size: 20px; color: #B91C1C; flex-shrink: 0; margin-top: 2px; }
  .about-row i.blue { color: #1D4ED8; }
  .about-name { font-size: 14px; font-weight: 500; color: #111827; }
  .about-role { font-size: 12.5px; color: #6B7280; font-weight: 300; margin-top: 2px; }

  /* ENERGY SAVINGS */
  .energy { padding: 4rem 3rem; background: #F9FAFB; border-top: 1px solid #E5E7EB; }
  .energy-intro { font-size: 15px; color: #4B5563; line-height: 1.8; font-weight: 300; max-width: 640px; margin-top: -1.5rem; margin-bottom: 2rem; }
  .energy-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
  .benefit { display: flex; gap: 0.75rem; align-items: flex-start; background: #fff; border: 1px solid #E5E7EB; border-radius: 10px; padding: 1.1rem 1.25rem; font-size: 13.5px; color: #374151; line-height: 1.55; font-weight: 300; }
  .benefit i { color: #1D4ED8; font-size: 17px; flex-shrink: 0; margin-top: 1px; }

  /* OFFERS */
  .offers { display: grid; grid-template-columns: 1fr 1fr; background: #F9FAFB; border-top: 1px solid #E5E7EB; }
  .offer { padding: 2.5rem 3rem; display: flex; align-items: flex-start; gap: 1.25rem; border-right: 1px solid #E5E7EB; }
  .offer:last-child { border-right: none; }
  .offer-pct { font-family: 'DM Serif Display', serif; font-size: 48px; color: #111827; line-height: 1; flex-shrink: 0; }
  .offer-title { font-size: 15px; font-weight: 500; color: #111827; margin-bottom: 3px; }
  .offer-note { font-size: 13px; color: #6B7280; font-weight: 300; }

  /* OFFER STRIP */
  .offer-strip {
    display: flex; align-items: center; gap: 1.25rem;
    padding: 1.25rem 3rem; background: #F9FAFB; border-top: 1px solid #E5E7EB;
  }
  .offer-strip-pct { font-family: 'DM Serif Display', serif; font-size: 30px; color: #B91C1C; flex-shrink: 0; }
  .offer-strip-txt { font-size: 14px; color: #374151; font-weight: 300; line-height: 1.5; }
  .offer-strip-txt strong { font-weight: 500; color: #111827; }

  /* FOOTER */
  .footer { background: #111827; padding: 3rem; display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 2rem; }
  .ft-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 1rem; text-decoration: none; }
  .ft-logo-img { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
  .ft-name { font-size: 14px; font-weight: 500; color: #fff; }
  .ft-tagline { font-size: 13px; color: #6B7280; line-height: 1.6; font-weight: 300; }
  .ft-heading { font-size: 11px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: #4B5563; margin-bottom: 0.75rem; }
  .ft-row { display: flex; align-items: center; gap: 8px; font-size: 13px; color: #9CA3AF; margin-bottom: 0.5rem; font-weight: 300; }
  .ft-row i { font-size: 15px; color: #4B5563; flex-shrink: 0; }
  .ft-row strong { color: #D1D5DB; font-weight: 500; }
  .ft-bottom { background: #0D1117; padding: 1rem 3rem; display: flex; justify-content: space-between; align-items: center; }
  .ft-copy { font-size: 12px; color: #374151; }

  /* RESPONSIVE */
  @media (max-width: 900px) {
    .nav { padding: 0 1.5rem; }
    .nav-links { display: flex; gap: 0; }
    .nav-links li { display: none; }
    .nav-links li:last-child { display: block; }
    .h1 { font-size: 38px; }
    .trust-bar { grid-template-columns: 1fr 1fr; }
    .trust-item:nth-child(2) { border-right: none; }
    .trust-item:nth-child(3), .trust-item:nth-child(4) { border-top: 1px solid #E5E7EB; }
    .svc-grid { grid-template-columns: 1fr 1fr; }
    .temp-strip { grid-template-columns: 1fr; }
    .strip-heat { border-right: none; border-bottom: 1px solid #FECACA; }
    .offers { grid-template-columns: 1fr; }
    .offer { border-right: none; border-bottom: 1px solid #E5E7EB; }
    .offer-strip { padding: 1.25rem 1.5rem; }
    .footer { grid-template-columns: 1fr; padding: 2rem 1.5rem; }
    .services { padding: 3rem 1.5rem; }
    .about { grid-template-columns: 1fr; padding: 3rem 1.5rem; gap: 2rem; }
    .energy { padding: 3rem 1.5rem; }
    .energy-grid { grid-template-columns: 1fr 1fr; }
    .ft-bottom { padding: 1rem 1.5rem; flex-direction: column; gap: 4px; text-align: center; }
  }
  @media (max-width: 600px) {
    .nav { padding: 0 1rem; }
    .logo-img { width: 38px; height: 38px; }
    .logo-sub { display: none; }
    .nav-cta { padding: 8px 14px; }
    .svc-grid { grid-template-columns: 1fr; }
    .trust-bar { grid-template-columns: 1fr; }
    .energy-grid { grid-template-columns: 1fr; }
    .trust-item { border-right: none !important; border-bottom: 1px solid #E5E7EB; }
    .hero-left { padding: 3rem 1.5rem; }
    .h1 { font-size: 32px; }
  }

  /* PAGE HERO (subpages) */
  .page-hero { position: relative; overflow: hidden; padding: 4.5rem 3rem; display: flex; flex-direction: column; justify-content: center; min-height: 300px; }
  .ph-inner { position: relative; z-index: 2; max-width: 720px; }
  .page-h1 {
    font-family: 'DM Serif Display', serif; font-size: 42px; line-height: 1.1;
    color: #fff; letter-spacing: -0.02em; margin-bottom: 1rem;
    text-shadow: 0 1px 12px rgba(0,0,0,0.35);
  }
  .page-hero-p { font-size: 15.5px; color: rgba(255,255,255,0.88); line-height: 1.7; font-weight: 300; max-width: 560px; }

  /* CONTENT PAGES */
  .page-section { padding: 4rem 3rem; }
  .page-section.alt { background: #F9FAFB; border-top: 1px solid #E5E7EB; }
  .nav-links a.active { color: #111827; font-weight: 500; }

  /* CTA STRIP */
  .cta-strip { background: #111827; padding: 3rem; display: flex; align-items: center; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }
  .cta-title { font-family: 'DM Serif Display', serif; font-size: 28px; color: #fff; margin-bottom: 4px; }
  .cta-sub { font-size: 14px; color: rgba(255,255,255,0.5); font-weight: 300; }

  /* TEAM */
  .team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: 2rem; }
  .tm { background: #fff; border: 1px solid #E5E7EB; border-radius: 12px; padding: 1.5rem; }
  .tm-icon { width: 42px; height: 42px; border-radius: 50%; background: #F3F4F6; display: flex; align-items: center; justify-content: center; color: #374151; font-size: 20px; margin-bottom: 1rem; }
  .tm-name { font-size: 14.5px; font-weight: 500; color: #111827; }
  .tm-role { font-size: 12px; color: #B91C1C; letter-spacing: 0.04em; text-transform: uppercase; margin: 3px 0 8px; }
  .tm-bio { font-size: 13px; color: #6B7280; line-height: 1.6; font-weight: 300; }

  a.svc { text-decoration: none; display: block; }

  @media (max-width: 900px) {
    .page-hero { padding: 3.5rem 1.5rem; }
    .page-h1 { font-size: 34px; }
    .page-section { padding: 3rem 1.5rem; }
    .cta-strip { padding: 2.5rem 1.5rem; }
    .team-grid { grid-template-columns: 1fr 1fr; }
  }
  @media (max-width: 600px) {
    .team-grid { grid-template-columns: 1fr; }
  }

  /* DEMO NOTES — remove before production */
  .demo-note {
    display: flex; align-items: flex-start; gap: 12px;
    border: 1.5px dashed #7C3AED; background: rgba(124, 58, 237, 0.06);
    border-radius: 10px; padding: 0.9rem 1.25rem;
    font-size: 13px; color: #5B21B6; line-height: 1.6; font-weight: 400;
  }
  .demo-note-badge {
    flex-shrink: 0; background: #7C3AED; color: #fff;
    font-size: 10px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase;
    padding: 3px 8px; border-radius: 4px; margin-top: 2px;
  }
  .demo-note-strip { padding: 1rem 3rem; background: #fff; }
  .demo-note-strip.gray { background: #F9FAFB; }
  @media (max-width: 900px) {
    .demo-note-strip { padding: 1rem 1.5rem; }
  }