/* ============================================
       DESIGN SYSTEM
       ============================================ */
    :root {
      --primary: #0F3D44;
      --primary-dark: #082B30;
      --primary-light: #1A5560;
      --accent: #C8A560;
      --accent-light: #E5C98A;
      --accent-dark: #A88444;
      --cream: #F5F1EA;
      --cream-dark: #EBE5D6;
      --paper: #FFFFFF;
      --ink: #1A1A1A;
      --slate: #5A6B70;
      --slate-light: #8A9499;
      --line: #E6DFD3;
      --line-dark: #D4CCB8;
      --error: #C44545;
      --success: #4A7C59;

      --font-display: 'Fraunces', 'Times New Roman', serif;
      --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

      --max-width: 1280px;
      --gutter: clamp(1.5rem, 4vw, 4rem);

      --shadow-sm: 0 1px 2px rgba(15, 61, 68, 0.04), 0 2px 4px rgba(15, 61, 68, 0.03);
      --shadow-md: 0 4px 6px rgba(15, 61, 68, 0.05), 0 10px 15px rgba(15, 61, 68, 0.06);
      --shadow-lg: 0 10px 25px rgba(15, 61, 68, 0.08), 0 20px 40px rgba(15, 61, 68, 0.06);

      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 16px;
    }

    * { margin: 0; padding: 0; box-sizing: border-box; }

    html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

    body {
      font-family: var(--font-body);
      font-size: 16px;
      line-height: 1.6;
      color: var(--ink);
      background: var(--cream);
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    h1, h2, h3, h4 {
      font-family: var(--font-display);
      font-weight: 500;
      line-height: 1.15;
      letter-spacing: -0.01em;
      color: var(--primary);
    }

    p { color: var(--slate); }

    a { color: inherit; text-decoration: none; transition: color 0.2s; }
    a:hover { color: var(--accent); }

    img, svg { display: block; max-width: 100%; }

    /* ============================================
       LAYOUT UTILITIES
       ============================================ */
    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 var(--gutter);
    }

    .section {
      padding: clamp(4rem, 10vw, 8rem) 0;
      position: relative;
    }

    .section--paper { background: var(--paper); }
    .section--cream { background: var(--cream); }
    .section--dark { background: var(--primary); color: var(--cream); }
    .section--dark h2, .section--dark h3 { color: var(--cream); }
    .section--dark p { color: rgba(245, 241, 234, 0.75); }

    .section-label {
      display: flex;
      align-items: center;
      gap: 1rem;
      margin-bottom: 1.5rem;
      font-family: var(--font-body);
      font-size: 0.78rem;
      font-weight: 500;
      letter-spacing: 3px;
      text-transform: uppercase;
      color: var(--accent);
    }

    .section-label::before {
      content: "";
      display: block;
      width: 36px;
      height: 1px;
      background: var(--accent);
    }

    .section-number {
      font-family: var(--font-display);
      font-style: italic;
      font-size: 0.95rem;
      color: var(--accent);
    }

    .section-title {
      font-size: clamp(2rem, 5vw, 3.5rem);
      margin-bottom: 1.25rem;
      max-width: 800px;
    }

    .section-intro {
      font-size: clamp(1rem, 1.5vw, 1.15rem);
      max-width: 640px;
      line-height: 1.7;
    }

    /* ============================================
       NAV
       ============================================ */
    .nav {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 100;
      background: rgba(245, 241, 234, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid transparent;
      transition: border-color 0.3s, background 0.3s;
    }

    .nav.scrolled {
      border-bottom-color: var(--line);
      background: rgba(245, 241, 234, 0.96);
    }

    .nav-inner {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 1rem var(--gutter);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .nav-brand {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-family: var(--font-display);
      font-weight: 600;
      font-size: 1.4rem;
      color: var(--primary);
      letter-spacing: 0.3px;
    }

    .nav-brand-mark {
      width: 38px;
      height: 38px;
    }

    .nav-brand .accent { color: var(--accent); }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 2.5rem;
      list-style: none;
    }

    .nav-links a {
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--primary);
      position: relative;
    }

    .nav-links a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: -4px;
      height: 1px;
      width: 0;
      background: var(--accent);
      transition: width 0.3s;
    }

    .nav-links a:hover::after { width: 100%; }

    .nav-cta {
      padding: 0.7rem 1.4rem;
      background: var(--primary);
      color: var(--cream) !important;
      border-radius: var(--radius-sm);
      font-weight: 500;
      transition: background 0.2s, transform 0.2s;
    }

    .nav-cta:hover {
      background: var(--primary-dark);
      color: var(--cream) !important;
      transform: translateY(-1px);
    }

    .nav-cta::after { display: none !important; }

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 0.5rem;
      color: var(--primary);
    }

    /* ============================================
       BUTTONS
       ============================================ */
    .btn {
      display: inline-flex;
      align-items: center;
      gap: 0.6rem;
      padding: 0.95rem 1.8rem;
      font-family: var(--font-body);
      font-size: 0.95rem;
      font-weight: 500;
      letter-spacing: 0.2px;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.2s ease;
      text-decoration: none;
    }

    .btn-primary {
      background: var(--accent);
      color: var(--primary-dark);
    }

    .btn-primary:hover {
      background: var(--accent-light);
      color: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

    .btn-dark {
      background: var(--primary);
      color: var(--cream);
    }

    .btn-dark:hover {
      background: var(--primary-dark);
      color: var(--cream);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 1.5px solid var(--primary);
    }

    .btn-outline:hover {
      background: var(--primary);
      color: var(--cream);
    }

    .btn-outline-light {
      background: transparent;
      color: var(--cream);
      border: 1.5px solid var(--cream);
    }

    .btn-outline-light:hover {
      background: var(--cream);
      color: var(--primary);
    }

    .btn-arrow::after {
      content: "→";
      font-size: 1.05em;
      transition: transform 0.2s;
    }

    .btn-arrow:hover::after {
      transform: translateX(4px);
    }

    /* ============================================
       HERO
       ============================================ */
    .hero {
      position: relative;
      min-height: 100vh;
      background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
      color: var(--cream);
      display: flex;
      align-items: center;
      padding: 8rem 0 4rem;
      overflow: hidden;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        radial-gradient(circle at 80% 20%, rgba(200, 165, 96, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 10% 90%, rgba(200, 165, 96, 0.06) 0%, transparent 40%);
      pointer-events: none;
    }

    .hero::after {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        repeating-linear-gradient(0deg, rgba(245, 241, 234, 0.015) 0px, rgba(245, 241, 234, 0.015) 1px, transparent 1px, transparent 3px);
      pointer-events: none;
      opacity: 0.5;
    }

    .hero-inner {
      position: relative;
      z-index: 2;
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 var(--gutter);
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 3rem;
      align-items: end;
    }

    .hero-content { max-width: 820px; }

    .hero-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 0.8rem;
      font-size: 0.78rem;
      font-weight: 500;
      letter-spacing: 3.5px;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 2rem;
    }

    .hero-eyebrow::before {
      content: "";
      display: block;
      width: 32px;
      height: 1px;
      background: var(--accent);
    }

    .hero-title {
      font-family: var(--font-display);
      font-size: clamp(2.75rem, 7vw, 5.5rem);
      font-weight: 400;
      line-height: 1.05;
      letter-spacing: -0.02em;
      color: var(--cream);
      margin-bottom: 2rem;
    }

    .hero-title .italic {
      font-style: italic;
      font-weight: 400;
      color: var(--accent-light);
    }

    .hero-subtitle {
      font-size: clamp(1.05rem, 1.5vw, 1.25rem);
      line-height: 1.65;
      color: rgba(245, 241, 234, 0.82);
      max-width: 600px;
      margin-bottom: 2.5rem;
      font-weight: 400;
    }

    .hero-actions {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
    }

    .hero-meta {
      writing-mode: vertical-rl;
      transform: rotate(180deg);
      font-size: 0.7rem;
      letter-spacing: 4px;
      text-transform: uppercase;
      color: rgba(200, 165, 96, 0.7);
      align-self: end;
      padding-bottom: 1rem;
    }

    .hero-meta span { color: var(--accent); }

    /* ============================================
       SERVICES
       ============================================ */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 2rem;
      margin-top: 4rem;
    }

    .service-card {
      background: var(--paper);
      border: 1px solid var(--line);
      padding: 3rem 2.5rem;
      border-radius: var(--radius-md);
      transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
      position: relative;
      overflow: hidden;
    }

    .service-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--accent);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.4s ease;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: var(--accent);
    }

    .service-card:hover::before { transform: scaleX(1); }

    .service-icon {
      width: 56px;
      height: 56px;
      margin-bottom: 1.5rem;
      color: var(--accent);
    }

    .service-title {
      font-size: 1.75rem;
      margin-bottom: 0.75rem;
    }

    .service-meta {
      font-size: 0.82rem;
      letter-spacing: 2px;
      text-transform: uppercase;
      color: var(--accent);
      font-weight: 500;
      margin-bottom: 0.5rem;
    }

    .service-description {
      color: var(--slate);
      margin-bottom: 1.5rem;
      line-height: 1.7;
    }

    .service-features {
      list-style: none;
      margin-bottom: 2rem;
    }

    .service-features li {
      padding: 0.5rem 0;
      padding-left: 1.5rem;
      position: relative;
      font-size: 0.95rem;
      color: var(--slate);
      border-bottom: 1px solid var(--line);
    }

    .service-features li::before {
      content: "→";
      position: absolute;
      left: 0;
      color: var(--accent);
      font-weight: 500;
    }

    .service-features li:last-child { border-bottom: none; }

    .service-cta {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      font-weight: 500;
      color: var(--primary);
      font-size: 0.95rem;
      padding-bottom: 4px;
      border-bottom: 1.5px solid var(--accent);
      transition: gap 0.2s;
    }

    .service-cta:hover {
      gap: 0.85rem;
      color: var(--primary);
    }

    /* ============================================
       PROMISE / WHY US
       ============================================ */
    .promise-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 0;
      margin-top: 4rem;
      border-top: 1px solid rgba(200, 165, 96, 0.3);
      border-bottom: 1px solid rgba(200, 165, 96, 0.3);
    }

    .promise-item {
      padding: 3rem 2rem;
      border-right: 1px solid rgba(200, 165, 96, 0.2);
      position: relative;
    }

    .promise-item:last-child { border-right: none; }

    .promise-number {
      font-family: var(--font-display);
      font-style: italic;
      font-size: 0.9rem;
      color: var(--accent);
      margin-bottom: 1.5rem;
      display: block;
    }

    .promise-title {
      font-size: 1.4rem;
      color: var(--cream);
      margin-bottom: 1rem;
    }

    .promise-text {
      font-size: 0.95rem;
      line-height: 1.7;
      color: rgba(245, 241, 234, 0.7);
    }

    /* ============================================
       SOLAR CALCULATOR
       ============================================ */
    .calculator {
      background: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: clamp(2rem, 4vw, 3.5rem);
      margin-top: 3rem;
      box-shadow: var(--shadow-md);
    }

    .calc-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 2rem;
      margin-bottom: 2.5rem;
      padding-bottom: 2rem;
      border-bottom: 1px solid var(--line);
      flex-wrap: wrap;
    }

    .calc-title { font-size: 1.75rem; margin-bottom: 0.5rem; }
    .calc-subtitle { font-size: 0.95rem; color: var(--slate); max-width: 500px; }

    .calc-progress {
      display: flex;
      gap: 0.5rem;
      align-items: center;
    }

    .calc-step-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--line-dark);
      transition: background 0.3s, transform 0.3s;
    }

    .calc-step-dot.active {
      background: var(--accent);
      transform: scale(1.4);
    }

    .calc-step-dot.complete {
      background: var(--primary);
    }

    .calc-step {
      display: none;
      animation: fadeIn 0.4s ease;
    }

    .calc-step.active { display: block; }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(8px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .calc-step-label {
      font-family: var(--font-display);
      font-style: italic;
      font-size: 0.95rem;
      color: var(--accent);
      margin-bottom: 0.5rem;
    }

    .calc-step-title {
      font-size: 1.5rem;
      margin-bottom: 0.5rem;
    }

    .calc-step-help {
      font-size: 0.95rem;
      color: var(--slate);
      margin-bottom: 2rem;
      line-height: 1.6;
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1.25rem;
      margin-bottom: 1.5rem;
    }

    .form-grid--three { grid-template-columns: repeat(3, 1fr); }

    .form-group { display: flex; flex-direction: column; }

    .form-group--full { grid-column: 1 / -1; }

    .form-label {
      font-size: 0.78rem;
      font-weight: 500;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--primary);
      margin-bottom: 0.5rem;
    }

    .form-hint {
      font-size: 0.82rem;
      color: var(--slate-light);
      margin-top: 0.4rem;
      font-style: italic;
    }

    .form-input,
    .form-select,
    .form-textarea {
      padding: 0.85rem 1rem;
      font-family: var(--font-body);
      font-size: 0.95rem;
      color: var(--ink);
      background: var(--cream);
      border: 1.5px solid var(--line);
      border-radius: var(--radius-sm);
      transition: border-color 0.2s, background 0.2s;
      width: 100%;
    }

    .form-input:focus,
    .form-select:focus,
    .form-textarea:focus {
      outline: none;
      border-color: var(--accent);
      background: var(--paper);
    }

    .form-textarea {
      resize: vertical;
      min-height: 100px;
      font-family: var(--font-body);
    }

    .form-error {
      font-size: 0.82rem;
      color: var(--error);
      margin-top: 0.4rem;
      display: none;
    }

    .form-input.error,
    .form-select.error {
      border-color: var(--error);
    }

    .form-input.error + .form-error,
    .form-select.error + .form-error {
      display: block;
    }

    /* Radio cards for system goal */
    .radio-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1rem;
      margin-bottom: 1.5rem;
    }

    .radio-card {
      position: relative;
      cursor: pointer;
    }

    .radio-card input[type="radio"] {
      position: absolute;
      opacity: 0;
      pointer-events: none;
    }

    .radio-card-label {
      display: block;
      padding: 1.5rem 1.25rem;
      background: var(--cream);
      border: 1.5px solid var(--line);
      border-radius: var(--radius-md);
      transition: all 0.2s;
      height: 100%;
    }

    .radio-card:hover .radio-card-label {
      border-color: var(--accent);
    }

    .radio-card input[type="radio"]:checked + .radio-card-label {
      border-color: var(--accent);
      background: rgba(200, 165, 96, 0.08);
      box-shadow: 0 0 0 1px var(--accent);
    }

    .radio-card-title {
      font-family: var(--font-display);
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 0.4rem;
    }

    .radio-card-desc {
      font-size: 0.85rem;
      color: var(--slate);
      line-height: 1.5;
    }

    .radio-card-tag {
      display: inline-block;
      font-size: 0.7rem;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--accent);
      font-weight: 600;
      margin-top: 0.6rem;
    }

    /* Checkbox grid for appliances */
    .checkbox-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 0.6rem;
      margin-bottom: 1.5rem;
    }

    .checkbox-item {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      padding: 0.7rem 0.9rem;
      background: var(--cream);
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.2s;
      font-size: 0.9rem;
    }

    .checkbox-item:hover {
      border-color: var(--accent);
    }

    .checkbox-item input[type="checkbox"] {
      accent-color: var(--accent);
      cursor: pointer;
    }

    .checkbox-item input:checked + span {
      color: var(--primary);
      font-weight: 500;
    }

    .calc-actions {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: 2.5rem;
      padding-top: 1.5rem;
      border-top: 1px solid var(--line);
      gap: 1rem;
      flex-wrap: wrap;
    }

    /* RESULTS */
    .calc-results {
      animation: fadeIn 0.5s ease;
    }

    .result-summary {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
      color: var(--cream);
      padding: 2.5rem;
      border-radius: var(--radius-md);
      margin-bottom: 2rem;
      position: relative;
      overflow: hidden;
    }

    .result-summary::before {
      content: "";
      position: absolute;
      top: -40px;
      right: -40px;
      width: 200px;
      height: 200px;
      background: radial-gradient(circle, rgba(200, 165, 96, 0.15) 0%, transparent 70%);
      pointer-events: none;
    }

    .result-headline {
      font-family: var(--font-display);
      font-style: italic;
      font-size: 1rem;
      color: var(--accent-light);
      margin-bottom: 0.5rem;
    }

    .result-savings {
      font-family: var(--font-display);
      font-size: clamp(2.5rem, 6vw, 4rem);
      font-weight: 400;
      line-height: 1;
      color: var(--cream);
      margin-bottom: 0.5rem;
    }

    .result-savings .currency {
      font-size: 0.5em;
      color: var(--accent-light);
      vertical-align: top;
      margin-right: 0.25rem;
    }

    .result-period {
      font-size: 0.95rem;
      color: rgba(245, 241, 234, 0.7);
      letter-spacing: 1.5px;
      text-transform: uppercase;
    }

    .result-annual {
      margin-top: 1.5rem;
      padding-top: 1.5rem;
      border-top: 1px solid rgba(200, 165, 96, 0.25);
      font-size: 1rem;
      color: rgba(245, 241, 234, 0.85);
    }

    .result-annual strong {
      color: var(--accent-light);
      font-weight: 600;
    }

    .specs-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1rem;
      margin-bottom: 2rem;
    }

    .spec-card {
      background: var(--cream);
      padding: 1.5rem 1.25rem;
      border-radius: var(--radius-sm);
      border: 1px solid var(--line);
    }

    .spec-label {
      font-size: 0.72rem;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 0.5rem;
      font-weight: 500;
    }

    .spec-value {
      font-family: var(--font-display);
      font-size: 1.5rem;
      font-weight: 600;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 0.25rem;
    }

    .spec-unit {
      font-size: 0.8rem;
      color: var(--slate);
    }

    .next-steps {
      background: var(--cream);
      border-left: 3px solid var(--accent);
      padding: 1.75rem 2rem;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      margin-bottom: 2rem;
    }

    .next-steps-title {
      font-family: var(--font-display);
      font-size: 1.15rem;
      color: var(--primary);
      margin-bottom: 0.75rem;
      font-weight: 600;
    }

    .next-steps-text {
      font-size: 0.95rem;
      color: var(--slate);
      line-height: 1.65;
      margin-bottom: 1rem;
    }

    .next-steps-fee {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.85rem;
      color: var(--primary);
      font-weight: 500;
      background: rgba(200, 165, 96, 0.15);
      padding: 0.4rem 0.8rem;
      border-radius: var(--radius-sm);
    }

    .disclaimer {
      font-size: 0.82rem;
      color: var(--slate-light);
      font-style: italic;
      line-height: 1.5;
      margin-top: 1.5rem;
      padding: 1rem;
      background: rgba(200, 165, 96, 0.05);
      border-radius: var(--radius-sm);
    }

    /* ============================================
       ROOFING FORM
       ============================================ */
    .roofing-form {
      background: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: clamp(2rem, 4vw, 3.5rem);
      margin-top: 3rem;
      box-shadow: var(--shadow-md);
    }

    .form-section {
      margin-bottom: 2.5rem;
      padding-bottom: 2rem;
      border-bottom: 1px solid var(--line);
    }

    .form-section:last-child { border-bottom: none; padding-bottom: 0; }

    .form-section-title {
      font-family: var(--font-display);
      font-size: 1.25rem;
      color: var(--primary);
      margin-bottom: 0.4rem;
      font-weight: 600;
    }

    .form-section-subtitle {
      font-size: 0.9rem;
      color: var(--slate);
      margin-bottom: 1.5rem;
    }

    .discount-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.35rem 0.8rem;
      background: var(--accent);
      color: var(--primary-dark);
      font-size: 0.78rem;
      font-weight: 600;
      letter-spacing: 1px;
      text-transform: uppercase;
      border-radius: var(--radius-sm);
      margin-left: 0.75rem;
    }

    .materials-info {
      background: var(--cream);
      padding: 1.5rem;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--accent);
      margin-top: 1rem;
    }

    .materials-info-title {
      font-family: var(--font-display);
      font-size: 1rem;
      color: var(--primary);
      margin-bottom: 0.75rem;
      font-weight: 600;
    }

    .materials-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 0.5rem;
      list-style: none;
      font-size: 0.88rem;
      color: var(--slate);
    }

    .materials-list li {
      padding-left: 1rem;
      position: relative;
    }

    .materials-list li::before {
      content: "·";
      position: absolute;
      left: 0;
      color: var(--accent);
      font-weight: bold;
    }

    /* ============================================
       TESTIMONIALS
       ============================================ */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
      margin-top: 4rem;
    }

    .testimonial {
      background: var(--paper);
      border: 1px solid var(--line);
      padding: 2.5rem 2rem;
      border-radius: var(--radius-md);
      position: relative;
      transition: transform 0.3s, box-shadow 0.3s;
    }

    .testimonial:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .testimonial-quote {
      font-family: var(--font-display);
      font-size: 3rem;
      line-height: 1;
      color: var(--accent);
      position: absolute;
      top: 1rem;
      left: 1.5rem;
      font-weight: 600;
    }

    .testimonial-text {
      font-size: 1rem;
      line-height: 1.7;
      color: var(--ink);
      margin: 1.5rem 0 1.5rem 0;
      padding-top: 2rem;
    }

    .testimonial-meta {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      padding-top: 1rem;
      border-top: 1px solid var(--line);
    }

    .testimonial-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--cream);
      font-family: var(--font-display);
      font-weight: 600;
      font-size: 1rem;
    }

    .testimonial-name {
      font-weight: 600;
      color: var(--primary);
      font-size: 0.95rem;
    }

    .testimonial-detail {
      font-size: 0.82rem;
      color: var(--slate);
    }

    .testimonial-placeholder {
      opacity: 0.6;
      border-style: dashed;
    }

    /* ============================================
       ABOUT
       ============================================ */
    .about-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 4rem;
      align-items: start;
      margin-top: 4rem;
    }

    .about-text p {
      margin-bottom: 1.25rem;
      line-height: 1.75;
      font-size: 1.05rem;
      color: rgba(245, 241, 234, 0.85);
    }

    .about-text p:first-child::first-letter {
      font-family: var(--font-display);
      font-size: 4em;
      float: left;
      line-height: 0.85;
      margin-right: 0.5rem;
      margin-top: 0.1em;
      color: var(--accent);
      font-weight: 600;
    }

    .about-stats {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.5rem;
    }

    .stat {
      padding: 2rem 1.5rem;
      border: 1px solid rgba(200, 165, 96, 0.3);
      border-radius: var(--radius-md);
      background: rgba(8, 43, 48, 0.4);
    }

    .stat-value {
      font-family: var(--font-display);
      font-size: 2.5rem;
      font-weight: 600;
      color: var(--accent);
      line-height: 1;
      margin-bottom: 0.5rem;
    }

    .stat-label {
      font-size: 0.85rem;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: rgba(245, 241, 234, 0.7);
    }

    /* ============================================
       FAQ
       ============================================ */
    .faq-list {
      max-width: 880px;
      margin: 4rem auto 0;
    }

    .faq-item {
      border-bottom: 1px solid var(--line);
    }

    .faq-question {
      width: 100%;
      padding: 1.75rem 0;
      background: none;
      border: none;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 2rem;
      text-align: left;
      font-family: var(--font-display);
      font-size: 1.15rem;
      font-weight: 500;
      color: var(--primary);
      transition: color 0.2s;
    }

    .faq-question:hover { color: var(--accent); }

    .faq-toggle {
      width: 28px;
      height: 28px;
      flex-shrink: 0;
      border: 1px solid var(--line-dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: background 0.2s, border-color 0.2s;
      font-size: 0.9rem;
      color: var(--primary);
    }

    .faq-question[aria-expanded="true"] .faq-toggle {
      background: var(--accent);
      border-color: var(--accent);
      color: var(--primary-dark);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
    }

    .faq-answer-inner {
      padding: 0 0 1.75rem 0;
      font-size: 0.98rem;
      color: var(--slate);
      line-height: 1.75;
      max-width: 760px;
    }

    /* ============================================
       CONTACT / FOOTER
       ============================================ */
    .footer {
      background: var(--primary-dark);
      color: var(--cream);
      padding: 5rem 0 2rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 3rem;
      padding-bottom: 4rem;
      border-bottom: 1px solid rgba(200, 165, 96, 0.2);
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-family: var(--font-display);
      font-weight: 600;
      font-size: 1.5rem;
      margin-bottom: 1.5rem;
    }

    .footer-brand .accent { color: var(--accent); }

    .footer-tagline {
      color: rgba(245, 241, 234, 0.7);
      max-width: 360px;
      line-height: 1.65;
      margin-bottom: 2rem;
    }

    .footer-contact-item {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      margin-bottom: 0.75rem;
      font-size: 0.95rem;
      color: rgba(245, 241, 234, 0.9);
    }

    .footer-contact-item svg {
      width: 18px;
      height: 18px;
      color: var(--accent);
      flex-shrink: 0;
    }

    .footer-heading {
      font-family: var(--font-body);
      font-size: 0.78rem;
      font-weight: 600;
      letter-spacing: 2.5px;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 1.25rem;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li { margin-bottom: 0.7rem; }

    .footer-links a {
      color: rgba(245, 241, 234, 0.75);
      font-size: 0.95rem;
    }

    .footer-links a:hover {
      color: var(--accent);
    }

    .footer-bottom {
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.85rem;
      color: rgba(245, 241, 234, 0.5);
    }

    .footer-bottom-links { display: flex; gap: 1.5rem; }

    /* ============================================
       SUCCESS STATE
       ============================================ */
    .form-success {
      display: none;
      text-align: center;
      padding: 3rem 1.5rem;
    }

    .form-success.active { display: block; animation: fadeIn 0.5s ease; }

    .success-mark {
      width: 64px;
      height: 64px;
      margin: 0 auto 1.5rem;
      background: var(--accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-dark);
      font-size: 2rem;
      font-weight: 600;
    }

    .success-title {
      font-family: var(--font-display);
      font-size: 1.75rem;
      color: var(--primary);
      margin-bottom: 0.75rem;
    }

    .success-text {
      color: var(--slate);
      max-width: 460px;
      margin: 0 auto 2rem;
      line-height: 1.65;
    }

    /* ============================================
       RESPONSIVE
       ============================================ */
    @media (max-width: 968px) {
      .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--cream);
        padding: 2rem var(--gutter);
        gap: 1.5rem;
        border-bottom: 1px solid var(--line);
        transform: translateY(-110%);
        transition: transform 0.3s ease;
        align-items: flex-start;
        box-shadow: var(--shadow-md);
      }
      .nav-links.open { transform: translateY(0); }
      .nav-toggle { display: flex; }

      .hero-inner { grid-template-columns: 1fr; }
      .hero-meta { display: none; }

      .services-grid,
      .promise-grid,
      .testimonials-grid,
      .form-grid,
      .form-grid--three,
      .radio-cards,
      .checkbox-grid {
        grid-template-columns: 1fr;
      }

      .promise-item {
        border-right: none;
        border-bottom: 1px solid rgba(200, 165, 96, 0.2);
      }
      .promise-item:last-child { border-bottom: none; }

      .specs-grid { grid-template-columns: repeat(2, 1fr); }

      .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }

      .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }

      .materials-list { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 560px) {
      .specs-grid,
      .about-stats,
      .footer-grid,
      .materials-list {
        grid-template-columns: 1fr;
      }

      .calc-header { flex-direction: column; }
      .footer-bottom { flex-direction: column; align-items: flex-start; }
    }

    /* Reveal-on-scroll utility */
    .reveal {
      opacity: 0;
      transform: translateY(20px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }