:root {
      --black: #0a0a0a;
      --black-2: #111111;
      --black-3: #161616;
      --panel: #1a1a1a;
      --line: rgba(255,255,255,0.1);
      --line-2: rgba(255,255,255,0.18);
      --white: #ffffff;
      --off: #e8e8e8;
      --muted: #9a9a9a;
      --dim: #6a6a6a;
      --red: #264233;
      --red-2: #3d6b55;
      --surface-light: #eef1ef;
      --surface-white: #ffffff;
      --ink: #121512;
      --ink-muted: #5a635e;
      --ink-dim: #7a847e;
      --line-light: rgba(18, 21, 18, 0.1);
      --line-light-2: rgba(18, 21, 18, 0.16);
      --max: 1400px;
      --trust-h: 34px;
      --nav-row-h: 78px;
      --nav-h: calc(var(--trust-h) + var(--nav-row-h));
      --font: "Montserrat", system-ui, sans-serif;
      --display: "Oswald", Impact, sans-serif;
      --ease: cubic-bezier(0.25, 0.8, 0.25, 1);
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font);
      background: var(--black);
      color: var(--white);
      line-height: 1.6;
      font-weight: 400;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    img { display: block; max-width: 100%; }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; color: inherit; background: none; border: 0; }
    ul { list-style: none; }

    .container {
      width: min(100% - 40px, var(--max));
      margin-inline: auto;
    }

    /* ========== NAV — BC style ========== */
    .nav {
      position: fixed;
      inset: 0 0 auto;
      z-index: 1000;
      height: var(--nav-h);
      display: flex;
      flex-direction: column;
      align-items: stretch;
      transition: background .35s ease, border-color .35s ease;
      border-bottom: 1px solid transparent;
    }
    .nav.solid {
      background: rgba(10,10,10,0.94);
      border-bottom-color: var(--line);
      backdrop-filter: blur(12px);
    }
    /* trust bar styles live in site.css (shared header) */
    .nav-main {
      height: var(--nav-row-h);
      flex-shrink: 0;
      display: flex;
      align-items: center;
    }
    .nav-inner {
      width: min(100% - 40px, var(--max));
      margin-inline: auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .logo {
      display: flex;
      align-items: baseline;
      gap: 10px;
      z-index: 2;
    }
    .logo b {
      font-family: var(--display);
      font-size: 1.75rem;
      font-weight: 600;
      letter-spacing: 0.14em;
    }
    .logo span {
      font-size: 0.65rem;
      letter-spacing: 0.22em;
      color: var(--muted);
      text-transform: uppercase;
      font-weight: 500;
    }
    /* Nav layout: keep in sync with site.css (shared header.php) */
    .nav-links {
      display: flex;
      align-items: center;
      flex-wrap: nowrap;
      gap: 0;
      flex: 1 1 auto;
      justify-content: center;
      min-width: 0;
    }
    .nav-links a {
      padding: 10px 11px;
      font-size: 0.82rem;
      font-weight: 600;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--off);
      opacity: 0.85;
      transition: opacity .2s, color .2s;
      white-space: nowrap;
    }
    .nav-links a:hover { opacity: 1; color: #fff; }
    .nav-right {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .logo { flex-shrink: 0; }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 0 24px;
      font-size: 0.78rem;
      font-weight: 700;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      cursor: pointer;
      transition: all .3s var(--ease);
      white-space: nowrap;
      text-decoration: none;
    }
    .btn-red {
      background: var(--red);
      color: #fff !important;
      border: 1px solid var(--red);
      box-shadow: 0 6px 18px rgba(38, 66, 51, 0.28);
    }
    .btn-red:hover {
      background: var(--red-2);
      border-color: var(--red-2);
      color: #fff !important;
      box-shadow: 0 10px 24px rgba(38, 66, 51, 0.35);
    }
    .btn-ghost {
      border: 1px solid var(--line-2);
      color: #fff !important;
      background: transparent;
      box-shadow: none;
    }
    .btn-ghost:hover {
      border-color: #fff;
      background: rgba(255,255,255,0.08);
      color: #fff !important;
    }
    .btn-white {
      background: #fff;
      color: #111 !important;
      border: 1px solid #fff;
    }
    .btn-white:hover {
      background: var(--off);
      border-color: var(--off);
      color: #111 !important;
    }

    /* Light homepage button contrast: shared rules in site.css
       (.section.alt / .intro / .how / .tech / .certs / .why / .cases-home) */
    .burger {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid var(--line-2);
      cursor: pointer;
      position: relative;
    }
    .burger i,
    .burger i::before,
    .burger i::after {
      content: "";
      position: absolute;
      left: 11px;
      right: 11px;
      height: 1.5px;
      background: #fff;
    }
    .burger i { top: 50%; }
    .burger i::before { top: -7px; }
    .burger i::after { top: 7px; }

    /* ========== HERO — BC full bleed ========== */
    .hero {
      position: relative;
      height: 100vh;
      height: 100svh;
      min-height: 640px;
      display: flex;
      align-items: center; /* vertical center content */
      overflow: hidden;
      background: #000;
    }
    .hero-media {
      position: absolute;
      inset: 0;
    }
    .hero-media img,
    .hero-media .hero-video {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center 40%;
      transform: scale(1.03);
      filter: brightness(0.72) contrast(1.08) saturate(0.95);
    }
    .hero-media .hero-video {
      position: absolute;
      inset: 0;
      z-index: 0;
    }
    .hero-media .hero-fallback-img {
      position: absolute;
      inset: 0;
      z-index: 0;
    }
    .hero-media:has(.hero-video[src]),
    .hero-media:has(video source) .hero-fallback-img {
      /* keep fallback under video; if video fails, image remains visible */
    }
    .hero-media video + .hero-fallback-img {
      opacity: 0;
      pointer-events: none;
    }
    .hero-media::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(0,0,0,0.72) 0%, rgba(0,0,0,0.25) 55%, rgba(0,0,0,0.45) 100%),
        linear-gradient(180deg, rgba(0,0,0,0.35) 0%, transparent 35%, rgba(0,0,0,0.85) 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      width: min(100% - 40px, var(--max));
      margin: 0 auto;
      padding: calc(var(--nav-h) + 12px) 0 24px; /* account for fixed header when centered */
      max-width: 640px;
      margin-left: max(20px, calc((100% - var(--max)) / 2));
    }
    .hero-kicker {
      display: inline-block;
      font-size: 0.72rem;
      font-weight: 600;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.68);
      margin-bottom: 14px;
      border-left: 2px solid var(--red);
      padding-left: 12px;
    }
    .hero h1 {
      font-family: var(--display);
      font-size: clamp(2.35rem, 4.8vw, 3.6rem);
      font-weight: 600;
      line-height: 1.1;
      letter-spacing: 0.03em;
      text-transform: uppercase;
      margin-bottom: 16px;
      max-width: 14em;
    }
    .hero h1 span {
      display: block;
      color: rgba(255,255,255,0.55);
      font-weight: 400;
      font-size: 0.92em;
      margin-top: 0.14em;
      letter-spacing: 0.04em;
    }
    .hero-desc {
      max-width: 440px;
      color: rgba(255,255,255,0.74);
      font-size: 0.95rem;
      font-weight: 400;
      line-height: 1.7;
      margin-bottom: 28px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .hero-actions .btn {
      min-height: 46px;
      padding: 0 22px;
      font-size: 0.74rem;
    }
    .hero-scroll {
      position: absolute;
      right: 40px;
      bottom: 40px;
      z-index: 2;
      writing-mode: vertical-rl;
      font-size: 0.68rem;
      letter-spacing: 0.28em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.55);
      font-weight: 600;
    }

    /* ========== TRUST BAR (under hero) ========== */
    .trust-bar {
      background: var(--black-2, #0d0d0d);
      border-bottom: 1px solid var(--line, rgba(255,255,255,0.08));
    }
    .trust-bar__inner {
      width: min(100% - 40px, var(--max));
      margin: 0 auto;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
    }
    .trust-item {
      padding: 28px 20px;
      text-align: center;
      border-right: 1px solid var(--line, rgba(255,255,255,0.08));
    }
    .trust-item:last-child { border-right: 0; }
    .trust-item strong {
      display: block;
      font-family: var(--display);
      font-size: clamp(1.8rem, 3.2vw, 2.6rem);
      font-weight: 600;
      letter-spacing: 0.04em;
      line-height: 1;
      margin-bottom: 8px;
      color: #fff;
    }
    .trust-item span {
      font-size: 0.72rem;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: var(--dim, rgba(255,255,255,0.5));
      font-weight: 600;
    }

    /* ========== WHY XBORUL (6 cards) ========== */
    .why {
      padding: 100px 0;
      background: var(--surface-light, #f4f2ee);
      color: var(--ink, #111);
      border-block: 1px solid var(--line-light, rgba(0,0,0,0.08));
    }
    .why .sec-head h2 { color: var(--ink, #111); }
    .why .sec-head p { color: var(--ink-muted, #555); }
    .why .kicker { color: var(--red, #264233); }
    .why-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-top: 40px;
    }
    .why-card {
      border: 1px solid var(--line-light, rgba(0,0,0,0.08));
      background: var(--surface-white, #fff);
      padding: 28px 24px 30px;
      transition: border-color .3s ease, transform .3s ease;
    }
    .why-card:hover {
      border-color: rgba(38, 66, 51, 0.45);
      transform: translateY(-2px);
    }
    .why-num {
      font-family: var(--display);
      font-size: 0.85rem;
      letter-spacing: 0.16em;
      color: var(--red, #264233);
      font-weight: 600;
      margin-bottom: 14px;
    }
    .why-card h3 {
      font-family: var(--display);
      font-size: 1.2rem;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      margin-bottom: 10px;
      font-weight: 600;
      color: var(--ink, #111);
    }
    .why-card p {
      color: var(--ink-muted, #555);
      font-size: 0.88rem;
      line-height: 1.7;
    }
    .why-foot {
      margin-top: 36px;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
    }

    /* ========== DUAL CATEGORY — BC CLICK ON style ========== */
    .dual {
      display: grid;
      grid-template-columns: 1fr 1fr;
      min-height: 72vh;
    }
    .dual-card {
      position: relative;
      overflow: hidden;
      min-height: 480px;
      display: flex;
      align-items: flex-end;
    }
    .dual-card img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 1s var(--ease);
      filter: brightness(0.55) contrast(1.05);
    }
    .dual-card:hover img { transform: scale(1.06); filter: brightness(0.62) contrast(1.05); }
    .dual-card .overlay {
      position: relative;
      z-index: 1;
      width: 100%;
      padding: 48px 40px;
      background: linear-gradient(180deg, transparent, rgba(0,0,0,0.75));
    }
    .dual-card .label {
      font-size: 0.72rem;
      letter-spacing: 0.24em;
      text-transform: uppercase;
      color: var(--muted);
      margin-bottom: 10px;
      font-weight: 600;
    }
    .dual-card h2 {
      font-family: var(--display);
      font-size: clamp(2rem, 4vw, 3.2rem);
      font-weight: 600;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      margin-bottom: 12px;
    }
    .dual-card p {
      color: rgba(255,255,255,0.7);
      max-width: 360px;
      font-size: 0.92rem;
      margin-bottom: 22px;
    }
    .dual-card .link {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 0.78rem;
      font-weight: 700;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      border-bottom: 2px solid var(--red);
      padding-bottom: 6px;
    }

    /* ========== INTRO TEXT band (light) ========== */
    .intro {
      padding: 100px 0;
      background: var(--surface-light);
      color: var(--ink);
      text-align: center;
      border-block: 1px solid var(--line-light);
    }
    .intro h2 {
      font-family: var(--display);
      font-size: clamp(2rem, 4vw, 3.4rem);
      font-weight: 500;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      margin-bottom: 22px;
      color: var(--ink);
    }
    .intro p {
      max-width: 720px;
      margin: 0 auto 28px;
      color: var(--ink-muted);
      font-size: 1rem;
      line-height: 1.85;
    }
    /* intro buttons: use global light-surface rules from site.css */

    /* ========== PRODUCT CATEGORY — BKU style ========== */
    .products {
      padding: 100px 0 80px;
      background: var(--black);
    }
    .sec-head {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      gap: 24px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    .sec-head h2 {
      font-family: var(--display);
      font-size: clamp(2rem, 3.5vw, 3rem);
      letter-spacing: 0.06em;
      text-transform: uppercase;
      font-weight: 600;
    }
    .sec-head p {
      color: var(--muted);
      max-width: 420px;
      font-size: 0.92rem;
    }
    .cat-tabs {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 28px;
    }
    .cat-tabs button {
      padding: 10px 18px;
      border: 1px solid var(--line);
      color: var(--muted);
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      cursor: pointer;
      transition: all .25s ease;
      background: transparent;
    }
    .cat-tabs button.active,
    .cat-tabs button:hover {
      border-color: #fff;
      color: #fff;
      background: rgba(255,255,255,0.05);
    }
    .product-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }
    .p-card {
      background: var(--black-3);
      border: 1px solid var(--line);
      overflow: hidden;
      group: card;
      transition: border-color .3s ease, transform .35s var(--ease);
    }
    .p-card:hover {
      border-color: var(--line-2);
      transform: translateY(-4px);
    }
    .p-card .img {
      position: relative;
      aspect-ratio: 1;
      background: #0d0d0d;
      overflow: hidden;
    }
    .p-card .img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .6s var(--ease);
    }
    .p-card:hover .img img { transform: scale(1.05); }
    .p-card .num {
      position: absolute;
      top: 14px;
      left: 14px;
      font-family: var(--display);
      font-size: 1.1rem;
      letter-spacing: 0.08em;
      color: var(--red);
      font-weight: 600;
      z-index: 1;
    }
    .p-card .body {
      padding: 18px 16px 20px;
    }
    .p-card h3 {
      font-size: 0.88rem;
      font-weight: 600;
      line-height: 1.45;
      margin-bottom: 12px;
      min-height: 2.8em;
      color: var(--off);
    }
    .p-card .meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 8px;
      font-size: 0.72rem;
      color: var(--dim);
      letter-spacing: 0.06em;
      text-transform: uppercase;
      font-weight: 600;
    }
    .p-card .meta a {
      color: #fff;
      border-bottom: 1px solid var(--red);
      padding-bottom: 2px;
    }

    /* ========== HOW WE WORK (light) ========== */
    .how {
      position: relative;
      padding: 100px 0;
      background: var(--surface-light);
      color: var(--ink);
      border-block: 1px solid var(--line-light);
      overflow: hidden;
    }
    .how::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(ellipse 55% 70% at 0% 50%, rgba(38, 66, 51,0.08), transparent 55%),
        radial-gradient(circle at 90% 20%, rgba(255,255,255,0.6), transparent 35%);
      pointer-events: none;
    }
    .how-head h2,
    .how-step h3 { color: var(--ink); }
    .how-head p,
    .how-step p,
    .how-step .tag { color: var(--ink-muted); }
    .how-head .kicker {
      color: var(--ink-dim);
      border-left-color: var(--red);
    }
    .how-steps {
      background: var(--surface-white) !important;
      border-color: var(--line-light) !important;
    }
    .how-step {
      border-color: var(--line-light) !important;
    }
    .how-step:hover {
      background: linear-gradient(180deg, rgba(38, 66, 51, 0.06), transparent 70%) !important;
    }
    .how-step .num {
      -webkit-text-stroke: 1px rgba(38, 66, 51, 0.55) !important;
    }
    .how-step .arrow {
      border-color: var(--line-light-2) !important;
      background: var(--surface-white) !important;
    }
    .how-foot {
      border-color: var(--line-light) !important;
      background:
        linear-gradient(90deg, rgba(38, 66, 51, 0.1), transparent 50%),
        var(--surface-white) !important;
    }
    .how-foot p { color: var(--ink-muted) !important; }
    .how-foot strong { color: var(--ink) !important; }
    .how .container { position: relative; z-index: 1; }
    .how-head {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 36px;
      align-items: end;
      margin-bottom: 44px;
    }
    .how-head .kicker {
      display: inline-block;
      font-size: 0.72rem;
      font-weight: 600;
      letter-spacing: 0.28em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.7);
      border-left: 3px solid var(--red);
      padding-left: 14px;
      margin-bottom: 14px;
    }
    .how-head h2 {
      font-family: var(--display);
      font-size: clamp(2rem, 3.5vw, 2.8rem);
      letter-spacing: 0.06em;
      text-transform: uppercase;
      font-weight: 600;
      line-height: 1.05;
    }
    .how-head p {
      color: var(--muted);
      font-size: 0.95rem;
      line-height: 1.75;
      max-width: 400px;
      margin: 0;
    }
    .how-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
      border: 1px solid var(--line);
      background: var(--black);
    }
    .how-step {
      position: relative;
      padding: 32px 26px 28px;
      border-right: 1px solid var(--line);
      min-height: 280px;
      display: flex;
      flex-direction: column;
      transition: background .3s ease;
    }
    .how-step:last-child { border-right: 0; }
    .how-step:hover {
      background: linear-gradient(180deg, rgba(38, 66, 51,0.1), transparent 70%);
    }
    .how-step .num {
      font-family: var(--display);
      font-size: 2.6rem;
      letter-spacing: 0.04em;
      color: transparent;
      -webkit-text-stroke: 1px rgba(38, 66, 51,0.75);
      line-height: 1;
      margin-bottom: 22px;
    }
    .how-step .tag {
      font-size: 0.66rem;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      color: var(--dim);
      font-weight: 700;
      margin-bottom: 10px;
    }
    .how-step h3 {
      font-family: var(--display);
      font-size: 1.35rem;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      font-weight: 600;
      margin-bottom: 12px;
      color: var(--off);
    }
    .how-step p {
      color: var(--muted);
      font-size: 0.86rem;
      line-height: 1.7;
      margin: 0;
      flex: 1;
    }
    .how-step .arrow {
      position: absolute;
      top: 36px;
      right: -1px;
      width: 22px;
      height: 22px;
      margin-right: -11px;
      border-radius: 50%;
      border: 1px solid var(--line-2);
      background: var(--black);
      z-index: 2;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .how-step .arrow::before {
      content: "";
      width: 6px;
      height: 6px;
      border-right: 1.5px solid var(--red);
      border-top: 1.5px solid var(--red);
      transform: rotate(45deg);
      margin-left: -2px;
    }
    .how-step:last-child .arrow { display: none; }
    .how-foot {
      margin-top: 28px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 20px 24px;
      border: 1px solid var(--line);
      background:
        linear-gradient(90deg, rgba(38, 66, 51,0.12), transparent 50%),
        var(--black-3);
    }
    .how-foot p {
      color: var(--muted);
      font-size: 0.9rem;
      line-height: 1.65;
      margin: 0;
      max-width: 640px;
    }
    .how-foot strong { color: #fff; font-weight: 600; }

    /* ========== WHO WE SERVE ========== */
    .serve {
      padding: 100px 0;
      background: var(--black);
      border-bottom: 1px solid var(--line);
    }
    .serve-head {
      max-width: 640px;
      margin-bottom: 40px;
    }
    .serve-head .kicker {
      display: inline-block;
      font-size: 0.72rem;
      font-weight: 600;
      letter-spacing: 0.28em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.7);
      border-left: 3px solid var(--red);
      padding-left: 14px;
      margin-bottom: 14px;
    }
    .serve-head h2 {
      font-family: var(--display);
      font-size: clamp(2rem, 3.5vw, 2.8rem);
      letter-spacing: 0.06em;
      text-transform: uppercase;
      font-weight: 600;
      line-height: 1.05;
      margin-bottom: 14px;
    }
    .serve-head p {
      color: var(--muted);
      font-size: 0.95rem;
      line-height: 1.75;
      margin: 0;
    }
    .serve-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
    }
    .serve-card {
      position: relative;
      min-height: 280px;
      padding: 28px 24px 24px;
      border: 1px solid var(--line);
      background:
        linear-gradient(165deg, rgba(255,255,255,0.035), transparent 50%),
        var(--black);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: border-color .3s ease, transform .35s var(--ease), box-shadow .35s ease;
    }
    .serve-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, var(--red), transparent 70%);
      opacity: 0.65;
    }
    .serve-card::after {
      content: attr(data-n);
      position: absolute;
      right: 12px;
      top: 8px;
      font-family: var(--display);
      font-size: 4.2rem;
      line-height: 1;
      letter-spacing: 0.02em;
      color: rgba(255,255,255,0.04);
      pointer-events: none;
    }
    .serve-card:hover {
      border-color: rgba(255,255,255,0.22);
      transform: translateY(-4px);
      box-shadow: 0 22px 50px rgba(0,0,0,0.35);
    }
    .serve-card:hover::before { opacity: 1; }
    .serve-card .icon {
      width: 48px;
      height: 48px;
      margin-bottom: 22px;
      border: 1px solid rgba(255,255,255,0.14);
      background: rgba(38, 66, 51,0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
    }
    .serve-card .icon svg {
      width: 22px;
      height: 22px;
      stroke: currentColor;
      fill: none;
      stroke-width: 1.6;
      stroke-linecap: round;
      stroke-linejoin: round;
    }
    .serve-card h3 {
      font-family: var(--display);
      font-size: 1.35rem;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      font-weight: 600;
      margin-bottom: 12px;
      color: var(--off);
    }
    .serve-card p {
      color: var(--muted);
      font-size: 0.88rem;
      line-height: 1.7;
      margin: 0 0 18px;
      flex: 1;
    }
    .serve-card ul {
      list-style: none;
      display: grid;
      gap: 8px;
      margin: 0;
      padding-top: 16px;
      border-top: 1px solid var(--line);
    }
    .serve-card li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: rgba(255,255,255,0.72);
      font-size: 0.8rem;
      line-height: 1.45;
    }
    .serve-card li::before {
      content: "";
      width: 5px;
      height: 5px;
      margin-top: 6px;
      flex-shrink: 0;
      background: var(--red);
    }
    .serve-cta {
      margin-top: 32px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 14px 20px;
    }
    .serve-cta span {
      color: var(--dim);
      font-size: 0.84rem;
    }

    /* ========== TECH FEATURES — BKU (light) ========== */
    .tech {
      padding: 100px 0;
      background: var(--surface-light);
      color: var(--ink);
      border-block: 1px solid var(--line-light);
    }
    .tech .sec-head h2 { color: var(--ink); }
    .tech .sec-head p { color: var(--ink-muted); }
    .tech-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 40px;
    }
    .tech-card {
      border: 1px solid var(--line-light);
      background: var(--surface-white);
      overflow: hidden;
      transition: border-color .3s ease;
      color: var(--ink);
    }
    .tech-card:hover { border-color: rgba(38, 66, 51,0.45); }
    .tech-card h3 { color: var(--ink); }
    .tech-card p { color: var(--ink-muted) !important; }
    .tech-card .img {
      aspect-ratio: 16/11;
      overflow: hidden;
      background: #111;
    }
    .tech-card .img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: saturate(0.9);
      transition: transform .6s var(--ease);
    }
    .tech-card:hover .img img { transform: scale(1.05); }
    .tech-card .body { padding: 22px 20px 26px; }
    .tech-card h3 {
      font-family: var(--display);
      font-size: 1.25rem;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      margin-bottom: 10px;
      font-weight: 600;
    }
    .tech-card p {
      color: var(--muted);
      font-size: 0.86rem;
      line-height: 1.7;
    }

    /* ========== PROCESS / FACTORY ========== */
    .factory {
      padding: 100px 0;
      background: var(--black);
    }
    .factory-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .factory-visual {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .factory-visual .big {
      grid-column: span 2;
      aspect-ratio: 16/9;
      overflow: hidden;
      border: 1px solid var(--line);
    }
    .factory-visual .sm {
      aspect-ratio: 4/3;
      overflow: hidden;
      border: 1px solid var(--line);
    }
    .factory-visual img,
    .factory-visual video {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: brightness(0.9) contrast(1.05);
    }
    .factory-visual--video {
      align-content: start;
    }
    .factory-visual .factory-vid--big {
      grid-column: span 2;
    }
    .factory-visual .factory-vid__media {
      aspect-ratio: 16/10;
    }
    .factory-visual .factory-vid--big .factory-vid__media {
      aspect-ratio: 16/9;
    }
    .factory-copy h2 {
      font-family: var(--display);
      font-size: clamp(2rem, 3.5vw, 3rem);
      letter-spacing: 0.05em;
      text-transform: uppercase;
      margin: 12px 0 18px;
      font-weight: 600;
    }
    .factory-copy > p {
      color: var(--muted);
      margin-bottom: 28px;
      line-height: 1.8;
    }
    .steps { display: grid; gap: 0; }
    .step {
      display: grid;
      grid-template-columns: 64px 1fr;
      gap: 16px;
      padding: 18px 0;
      border-top: 1px solid var(--line);
    }
    .step:last-child { border-bottom: 1px solid var(--line); }
    .step .n {
      font-family: var(--display);
      font-size: 1.4rem;
      color: var(--red);
      letter-spacing: 0.06em;
      font-weight: 600;
    }
    .step h4 {
      font-size: 0.95rem;
      font-weight: 700;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      margin-bottom: 4px;
    }
    .step p { color: var(--muted); font-size: 0.88rem; }

    /* ========== STATS — BKU ========== */
    .stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      background: var(--red);
    }
    .stat {
      padding: 42px 24px;
      text-align: center;
      border-right: 1px solid rgba(255,255,255,0.18);
    }
    .stat:last-child { border-right: 0; }
    .stat strong {
      display: block;
      font-family: var(--display);
      font-size: clamp(2.2rem, 4vw, 3.2rem);
      font-weight: 600;
      letter-spacing: 0.04em;
      line-height: 1;
      margin-bottom: 8px;
    }
    .stat span {
      font-size: 0.78rem;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      font-weight: 600;
      opacity: 0.9;
    }

    /* ========== CERTS / CREDENTIALS (light) ========== */
    .certs {
      position: relative;
      padding: 100px 0;
      background:
        radial-gradient(ellipse 70% 80% at 85% 20%, rgba(38, 66, 51,0.1), transparent 50%),
        var(--surface-light);
      color: var(--ink);
      border-block: 1px solid var(--line-light);
      overflow: hidden;
    }
    .certs-head h2,
    .certs h2 { color: var(--ink) !important; }
    .certs-head .kicker { color: var(--ink-dim) !important; border-left-color: var(--red); }
    .certs-head .lead,
    .certs .cert-note p,
    .certs .xtown-certs__text { color: var(--ink-muted) !important; }
    .certs .cert-card,
    .certs .cert-note {
      background: var(--surface-white) !important;
      border-color: var(--line-light) !important;
      color: var(--ink);
    }
    .certs .cert-card h3,
    .certs .cert-note strong { color: var(--ink) !important; }
    .certs .cert-card p,
    .certs .cert-note p { color: var(--ink-muted) !important; }
    .certs .xtown-certs__card {
      background: var(--surface-white);
      border-color: var(--line-light);
      box-shadow: 0 10px 24px rgba(18, 21, 18, 0.05);
    }
    .certs .xtown-certs__card:hover {
      border-color: var(--red);
      box-shadow: 0 18px 40px rgba(18, 21, 18, 0.1);
    }
    .certs .xtown-certs__card strong { color: var(--ink); }
    .certs .xtown-certs__text,
    .certs .xtown-certs__label { color: var(--ink-muted); }
    .certs .xtown-certs__label--partner { color: #8a6a1e; }
    .certs .xtown-certs__go { color: var(--red); }
    .certs .xtown-certs__card:hover .xtown-certs__go { color: var(--red-2); }
    .certs .xtown-certs__band--partner {
      border-color: rgba(138, 106, 30, 0.28);
      background: rgba(138, 106, 30, 0.05);
    }
    .certs .xtown-certs__card--partner {
      background: var(--surface-white);
    }
    .certs .cert-note .btn { flex-shrink: 0; }
    /* certs buttons: use global light-surface rules from site.css */
    .certs-head {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: end;
      margin-bottom: 40px;
    }
    .certs-head .kicker {
      display: inline-block;
      font-size: 0.72rem;
      font-weight: 600;
      letter-spacing: 0.28em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.7);
      border-left: 3px solid var(--red);
      padding-left: 14px;
      margin-bottom: 14px;
    }
    .certs-head h2 {
      font-family: var(--display);
      font-size: clamp(2rem, 3.5vw, 2.8rem);
      letter-spacing: 0.06em;
      text-transform: uppercase;
      font-weight: 600;
      line-height: 1.05;
      margin-bottom: 0;
    }
    .certs-head .lead {
      color: var(--muted);
      font-size: 0.95rem;
      line-height: 1.75;
      max-width: 420px;
      margin: 0 0 18px;
    }
    .certs-head .actions {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .cert-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
    }
    .cert-card {
      position: relative;
      min-height: 220px;
      padding: 28px 22px 24px;
      border: 1px solid var(--line);
      background:
        linear-gradient(165deg, rgba(255,255,255,0.04), transparent 45%),
        var(--black);
      overflow: hidden;
      transition: border-color .3s ease, transform .35s var(--ease), box-shadow .35s ease;
      text-align: left;
    }
    .cert-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 2px;
      background: linear-gradient(90deg, var(--red), transparent 75%);
      opacity: 0.7;
      transition: opacity .3s ease;
    }
    .cert-card::after {
      content: attr(data-mark);
      position: absolute;
      right: -6px;
      bottom: -18px;
      font-family: var(--display);
      font-size: 5.5rem;
      letter-spacing: 0.02em;
      line-height: 1;
      color: rgba(255,255,255,0.035);
      pointer-events: none;
      user-select: none;
    }
    .cert-card:hover {
      border-color: rgba(255,255,255,0.22);
      transform: translateY(-4px);
      box-shadow: 0 22px 50px rgba(0,0,0,0.35);
    }
    .cert-card:hover::before { opacity: 1; }
    .cert-card .mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 72px;
      height: 40px;
      padding: 0 14px;
      margin-bottom: 22px;
      border: 1px solid rgba(255,255,255,0.16);
      background: rgba(38, 66, 51,0.1);
      font-family: var(--display);
      font-size: 1.05rem;
      letter-spacing: 0.14em;
      font-weight: 600;
      color: #fff;
    }
    .cert-card h3 {
      font-family: var(--display);
      font-size: 1.15rem;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      font-weight: 600;
      margin-bottom: 10px;
      color: var(--off);
    }
    .cert-card p {
      color: var(--muted);
      font-size: 0.84rem;
      line-height: 1.65;
      margin: 0;
      max-width: 28ch;
    }
    .cert-note {
      margin-top: 28px;
      padding: 18px 22px;
      border: 1px solid var(--line);
      border-left: 3px solid var(--red);
      background: rgba(0,0,0,0.28);
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 14px 24px;
    }
    .cert-note p {
      color: var(--muted);
      font-size: 0.88rem;
      line-height: 1.65;
      margin: 0;
      max-width: 720px;
    }
    .cert-note strong { color: var(--off); font-weight: 600; }
    /* legacy pills (if reused) */
    .cert-row {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 14px;
    }
    .cert-pill {
      min-width: 120px;
      padding: 22px 28px;
      border: 1px solid var(--line-2);
      background: var(--black);
      font-family: var(--display);
      font-size: 1.3rem;
      letter-spacing: 0.12em;
      font-weight: 600;
    }

    /* ========== FAQ / CTA strip Kipardo-ish ========== */
    .faq-cta {
      padding: 100px 0;
      background: var(--black);
    }
    .faq-grid {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 60px;
      align-items: start;
    }
    .faq-grid h2 {
      font-family: var(--display);
      font-size: clamp(2rem, 3.5vw, 3rem);
      letter-spacing: 0.05em;
      text-transform: uppercase;
      margin: 12px 0 18px;
      font-weight: 600;
    }
    .faq-grid .lead {
      color: var(--muted);
      margin-bottom: 28px;
      line-height: 1.8;
    }
    .faq-list { display: grid; gap: 10px; }
    .faq-item {
      border: 1px solid var(--line);
      background: var(--black-3);
    }
    .faq-item.open { border-color: rgba(38, 66, 51,0.5); }
    .faq-q {
      width: 100%;
      text-align: left;
      padding: 18px 20px;
      display: flex;
      justify-content: space-between;
      gap: 16px;
      align-items: center;
      cursor: pointer;
      font-size: 0.92rem;
      font-weight: 600;
      color: #fff;
    }
    .faq-q .plus {
      color: var(--red);
      font-size: 1.3rem;
      line-height: 1;
      transition: transform .3s ease;
    }
    .faq-item.open .plus { transform: rotate(45deg); }
    .faq-a {
      max-height: 0;
      overflow: hidden;
      transition: max-height .4s ease;
    }
    .faq-a-inner {
      padding: 0 20px 18px;
      color: var(--muted);
      font-size: 0.9rem;
      line-height: 1.75;
    }

    /* ========== CONTACT ========== */
    .contact {
      padding: 0 0 100px;
      background: var(--black);
    }
    .contact-panel {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      border: 1px solid var(--line);
      background: var(--black-2);
    }
    .contact-info {
      padding: 48px 40px;
      border-right: 1px solid var(--line);
      background:
        linear-gradient(160deg, rgba(38, 66, 51,0.12), transparent 50%),
        var(--black-3);
    }
    .contact-info h2 {
      font-family: var(--display);
      font-size: clamp(2rem, 3vw, 2.8rem);
      letter-spacing: 0.05em;
      text-transform: uppercase;
      margin: 12px 0 16px;
      font-weight: 600;
    }
    .contact-info > p {
      color: var(--muted);
      margin-bottom: 28px;
      line-height: 1.75;
    }
    .cinfo {
      display: grid;
      gap: 14px;
    }
    .cinfo div {
      padding: 14px 0;
      border-top: 1px solid var(--line);
    }
    .cinfo div:last-child { border-bottom: 1px solid var(--line); }
    .cinfo strong {
      display: block;
      font-size: 0.72rem;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: var(--dim);
      margin-bottom: 4px;
    }
    .contact-form {
      padding: 40px;
      display: grid;
      gap: 14px;
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .field { display: grid; gap: 7px; }
    .field label {
      font-size: 0.7rem;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--dim);
      font-weight: 600;
    }
    .field input,
    .field select,
    .field textarea {
      width: 100%;
      border: 1px solid var(--line);
      background: var(--black);
      padding: 13px 14px;
      color: #fff;
      outline: none;
      transition: border-color .25s ease;
    }
    .field select {
      appearance: none;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5' stroke='%239a9a9a' stroke-width='1.5'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 14px center;
      background-color: var(--black);
      padding-right: 36px;
    }
    .field textarea { min-height: 100px; resize: vertical; }
    .field input:focus,
    .field select:focus,
    .field textarea:focus {
      border-color: rgba(38, 66, 51,0.7);
    }
    .form-note {
      font-size: 0.78rem;
      color: var(--dim);
    }
    .form-success {
      display: none;
      padding: 12px 14px;
      border: 1px solid rgba(46,160,90,0.5);
      background: rgba(46,160,90,0.1);
      color: #8fd9ad;
      font-size: 0.88rem;
    }
    .form-success.show { display: block; }
    .form-success.is-error {
      background: rgba(180, 40, 40, 0.12);
      color: #f0a0a0;
    }

    /* ========== FOOTER ========== */
    .footer {
      border-top: 1px solid var(--line);
      background: #050505;
      padding: 56px 0 24px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 32px;
      padding-bottom: 40px;
      border-bottom: 1px solid var(--line);
    }
    .footer-brand p {
      margin-top: 14px;
      color: var(--dim);
      font-size: 0.88rem;
      max-width: 300px;
      line-height: 1.7;
    }
    .footer h5 {
      font-size: 0.72rem;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      color: var(--dim);
      margin-bottom: 16px;
      font-weight: 700;
    }
    .footer-col a {
      display: block;
      padding: 5px 0;
      color: var(--muted);
      font-size: 0.88rem;
      transition: color .2s;
    }
    .footer-col a:hover { color: #fff; }
    .footer-bottom {
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
      color: var(--dim);
      font-size: 0.78rem;
    }
    .footer-bottom-links {
      display: flex;
      flex-wrap: wrap;
      gap: 8px 16px;
      align-items: center;
    }
    .footer-bottom-links a {
      color: var(--dim);
      transition: color .2s;
    }
    .footer-bottom-links a:hover { color: #fff; }
    .footer-bottom-links .sep {
      color: rgba(255,255,255,0.15);
      user-select: none;
    }

    /* mobile nav */
    .mobile {
      position: fixed;
      inset: 0;
      z-index: 900;
      background: rgba(10,10,10,0.98);
      padding: 100px 28px 40px;
      display: flex;
      flex-direction: column;
      gap: 0;
      opacity: 0;
      pointer-events: none;
      transition: opacity .3s ease;
    }
    .mobile.open { opacity: 1; pointer-events: auto; }
    .mobile a {
      font-family: var(--display);
      font-size: 1.8rem;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      padding: 14px 0;
      border-bottom: 1px solid var(--line);
    }

    .reveal {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity .8s var(--ease), transform .8s var(--ease);
    }
    .reveal.in { opacity: 1; transform: none; }

    @media (max-width: 1200px) {
      .nav-links a { padding: 10px 8px; font-size: 0.76rem; letter-spacing: 0.08em; }
      .nav-right .btn { padding: 0 16px; min-height: 42px; }
    }
    @media (max-width: 1100px) {
      .nav-links, .nav-right .btn { display: none; }
      .burger { display: inline-block; }
      .product-grid { grid-template-columns: repeat(2, 1fr); }
      .tech-grid { grid-template-columns: 1fr 1fr; }
      .why-grid { grid-template-columns: 1fr 1fr; }
      .stats { grid-template-columns: 1fr 1fr; }
      .trust-bar__inner { grid-template-columns: 1fr 1fr; }
      .trust-item:nth-child(2) { border-right: 0; }
      .trust-item:nth-child(1),
      .trust-item:nth-child(2) { border-bottom: 1px solid var(--line, rgba(255,255,255,0.08)); }
      .stat:nth-child(2) { border-right: 0; }
      .stat:nth-child(1),
      .stat:nth-child(2) { border-bottom: 1px solid rgba(255,255,255,0.18); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .certs-head { grid-template-columns: 1fr; gap: 20px; align-items: start; }
      .cert-grid { grid-template-columns: repeat(2, 1fr); }
      .how-head { grid-template-columns: 1fr; gap: 16px; align-items: start; }
      .how-steps { grid-template-columns: 1fr 1fr; }
      .how-step { border-right: 0; border-bottom: 1px solid var(--line); min-height: auto; }
      .how-step:nth-child(odd) { border-right: 1px solid var(--line); }
      .how-step:nth-last-child(-n+2) { border-bottom: 0; }
      .how-step .arrow { display: none; }
      .serve-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 900px) {
      .dual,
      .factory-grid,
      .faq-grid,
      .contact-panel {
        grid-template-columns: 1fr;
      }
      .contact-info { border-right: 0; border-bottom: 1px solid var(--line); }
      .hero-content {
        margin-left: 20px;
        padding-top: calc(var(--nav-h) + 8px);
        padding-bottom: 20px;
      }
      .hero-scroll { display: none; }
    }
    @media (max-width: 640px) {
      .container, .nav-inner { width: min(100% - 24px, var(--max)); }
      .product-grid,
      .tech-grid,
      .why-grid,
      .stats,
      .trust-bar__inner,
      .form-row,
      .footer-grid,
      .factory-visual,
      .cert-grid,
      .how-steps,
      .serve-grid {
        grid-template-columns: 1fr;
      }
      .trust-item { border-right: 0 !important; border-bottom: 1px solid var(--line, rgba(255,255,255,0.08)); }
      .trust-item:last-child { border-bottom: 0; }
      .how-step:nth-child(odd) { border-right: 0; }
      .how-step { border-bottom: 1px solid var(--line); }
      .how-step:last-child { border-bottom: 0; }
      .cert-card { min-height: auto; }
      .cert-note { flex-direction: column; align-items: flex-start; }
      .serve-card { min-height: auto; }
      .factory-visual .big { grid-column: auto; }
      .stat { border-right: 0 !important; border-bottom: 1px solid rgba(255,255,255,0.18); }
      .stat:last-child { border-bottom: 0; }
      .dual-card { min-height: 380px; }
      .contact-form, .contact-info { padding: 28px 20px; }
      .hero h1 { font-size: clamp(2.05rem, 8vw, 2.55rem); }
      .hero-content { max-width: min(100% - 24px, 520px); }
      .hero-desc { font-size: 0.9rem; }
    }
  
    /* Floating WhatsApp styles: see site.css (dual-number picker) */