:root {
      --ink: #0D0D0D;
      --ink-2: #1A1A1A;
      --paper: #FFFFFF;
      --paper-dim: #F1F1F1;
      --signal: #E2231A;
      --signal-2: #FF3B30;
      --steel: #1A0303;
      --steel-2: #2B0808;
      --line: rgba(255, 255, 255, 0.16);
      --line-dark: rgba(13, 13, 13, 0.14);
      --muted: rgba(255, 255, 255, 0.62);
      --muted-dark: rgba(13, 13, 13, 0.6);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      background: var(--paper);
      color: var(--ink);
      font-family: 'Inter', sans-serif;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

    a {
      color: inherit;
      text-decoration: none;
    }

    .display {
      font-family: 'Anton', sans-serif;
      font-weight: 400;
      text-transform: uppercase;
      letter-spacing: 0.01em;
    }

    .mono {
      font-family: 'IBM Plex Mono', monospace;
    }

    .wrap {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
    }

    @media (max-width:720px) {
      .wrap {
        padding: 0 20px;
      }
    }

    /* ---------- registration mark signature element ---------- */
    .regmark {
      position: absolute;
      width: 26px;
      height: 26px;
      pointer-events: none;
      opacity: 0.55;
    }

    .regmark::before,
    .regmark::after {
      content: "";
      position: absolute;
      background: currentColor;
    }

    .regmark::before {
      top: 50%;
      left: 0;
      width: 100%;
      height: 1px;
      transform: translateY(-50%);
    }

    .regmark::after {
      left: 50%;
      top: 0;
      height: 100%;
      width: 1px;
      transform: translateX(-50%);
    }

    .regmark .circle {
      position: absolute;
      top: 50%;
      left: 50%;
      width: 12px;
      height: 12px;
      border: 1px solid currentColor;
      border-radius: 50%;
      transform: translate(-50%, -50%);
    }

    .regmark.tl {
      top: 18px;
      left: 18px;
    }

    .regmark.tr {
      top: 18px;
      right: 18px;
    }

    .regmark.bl {
      bottom: 18px;
      left: 18px;
    }

    .regmark.br {
      bottom: 18px;
      right: 18px;
    }

    /* ---------- cut line divider ---------- */
    .cutline {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 14px 0;
      color: var(--muted-dark);
    }

    .cutline .dash {
      flex: 1;
      border-top: 1px dashed currentColor;
      opacity: 0.5;
    }

    .cutline span {
      font-size: 11px;
      letter-spacing: 0.18em;
      white-space: nowrap;
    }

    .cutline.on-dark {
      color: var(--muted);
    }

    /* ---------- topbar ---------- */
    header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(13, 13, 13, 0.92);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--line);
    }

    .topbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 32px;
      color: var(--paper);
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .brand .mark {
      width: 34px;
      height: 34px;
      background: var(--signal);
      border-radius: 3px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--ink);
      font-family: 'Anton', sans-serif;
      font-size: 16px;
    }

    .brand .word {
      font-family: 'Archivo', sans-serif;
      font-weight: 800;
      font-size: 16px;
      letter-spacing: 0.02em;
      line-height: 1.05;
    }

    .brand .word small {
      display: block;
      font-family: 'IBM Plex Mono', monospace;
      font-weight: 400;
      font-size: 10px;
      letter-spacing: 0.16em;
      color: var(--muted);
      margin-top: 2px;
    }

    nav {
      display: flex;
      gap: 28px;
      font-size: 14px;
      font-weight: 500;
      color: var(--muted);
    }

    nav a:hover {
      color: var(--paper);
    }

    .topbar-cta {
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .phone {
      font-family: 'IBM Plex Mono', monospace;
      font-size: 13px;
      color: var(--paper);
      display: flex;
      flex-direction: column;
      text-align: right;
      line-height: 1.3;
    }

    .phone small {
      color: var(--muted);
      font-size: 10px;
      letter-spacing: 0.1em;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 11px 20px;
      border-radius: 2px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.03em;
      cursor: pointer;
      border: 1px solid transparent;
      transition: transform .15s ease, background .15s ease, color .15s ease;
    }

    .btn-signal {
      background: var(--signal);
      color: var(--ink);
    }

    .btn-signal:hover {
      background: var(--signal-2);
      transform: translateY(-1px);
    }

    .btn-outline {
      border-color: rgba(255, 255, 255, 0.35);
      color: var(--paper);
    }

    .btn-outline:hover {
      border-color: var(--paper);
    }

    .btn-outline-dark {
      border-color: rgba(13, 13, 13, 0.3);
      color: var(--ink);
    }

    .btn-outline-dark:hover {
      border-color: var(--ink);
      background: rgba(13, 13, 13, 0.05);
    }

    @media (max-width:900px) {
      nav {
        display: none;
      }

      .phone {
        display: none;
      }
    }

    /* ---------- hero ---------- */
    .hero {
      position: relative;
      min-height: 96vh;
      display: flex;
      align-items: flex-end;
      overflow: hidden;
      color: var(--paper);
      isolation: isolate;
    }

    .hero iframe,
    .hero .fallback-img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: -2;
      filter: saturate(0.85) brightness(0.6);
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      z-index: -1;
      background:
        linear-gradient(180deg, rgba(13, 13, 13, 0.55) 0%, rgba(13, 13, 13, 0.35) 40%, rgba(13, 13, 13, 0.92) 100%),
        linear-gradient(90deg, rgba(13, 13, 13, 0.75) 0%, rgba(13, 13, 13, 0.1) 55%);
    }

    .hero-inner {
      position: relative;
      width: 100%;
      padding: 120px 0 64px;
    }

    .eyebrow {
      font-size: 11px;
      letter-spacing: 0.22em;
      color: var(--signal-2);
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 22px;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      background: var(--signal);
      border-radius: 50%;
      box-shadow: 0 0 0 4px rgba(226, 35, 26, 0.28);
    }

    .hero h1 {
      font-size: clamp(52px, 9vw, 118px);
      line-height: 0.92;
      margin-bottom: 26px;
      max-width: 900px;
    }

    .hero h1 .accent {
      color: var(--signal);
    }

    .hero-sub {
      max-width: 520px;
      font-size: 17px;
      line-height: 1.6;
      color: var(--muted);
      margin-bottom: 36px;
    }

    .hero-cta {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 56px;
    }

    .hero-cta .btn {
      padding: 16px 26px;
      font-size: 14px;
    }

    .spec-tags {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }

    .spec-tag {
      font-family: 'IBM Plex Mono', monospace;
      font-size: 11.5px;
      letter-spacing: 0.05em;
      padding: 8px 12px;
      border: 1px solid rgba(255, 255, 255, 0.25);
      border-radius: 2px;
      color: var(--paper);
      background: rgba(13, 13, 13, 0.35);
      backdrop-filter: blur(4px);
    }

    .spec-tag b {
      color: var(--signal-2);
    }

    /* ---------- marquee ---------- */
    .marquee-band {
      background: var(--signal);
      color: var(--ink);
      overflow: hidden;
      border-top: 1px solid rgba(13, 13, 13, 0.15);
      border-bottom: 1px solid rgba(13, 13, 13, 0.15);
    }

    .marquee-track {
      display: flex;
      white-space: nowrap;
      padding: 13px 0;
      animation: scroll-left 34s linear infinite;
      font-family: 'IBM Plex Mono', monospace;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.04em;
    }

    .marquee-track span {
      padding: 0 22px;
      display: inline-flex;
      align-items: center;
      gap: 22px;
    }

    .marquee-track span::after {
      content: "✂";
      opacity: 0.6;
    }

    @keyframes scroll-left {
      from {
        transform: translateX(0);
      }

      to {
        transform: translateX(-50%);
      }
    }

    @media (prefers-reduced-motion: reduce) {
      .marquee-track {
        animation: none;
      }
    }

    /* ---------- section basics ---------- */
    section {
      position: relative;
    }

    .section-pad {
      padding: 88px 0;
    }

    .section-head {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      gap: 24px;
      margin-bottom: 44px;
      flex-wrap: wrap;
    }

    .section-label {
      font-family: 'IBM Plex Mono', monospace;
      font-size: 11px;
      letter-spacing: 0.2em;
      color: var(--signal);
      margin-bottom: 12px;
      display: block;
    }

    .section-head h2 {
      font-size: clamp(32px, 4vw, 52px);
      line-height: 1;
    }

    .section-head p {
      max-width: 360px;
      color: var(--muted-dark);
      font-size: 14.5px;
      line-height: 1.6;
    }

    /* ---------- product grid ---------- */
    .grid-products {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2px;
      background: var(--line-dark);
      border: 1px solid var(--line-dark);
    }

    @media (max-width:900px) {
      .grid-products {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width:600px) {
      .grid-products {
        grid-template-columns: 1fr;
      }
    }

    .product-card {
      background: var(--paper);
      position: relative;
      display: flex;
      flex-direction: column;
    }

    .product-media {
      position: relative;
      aspect-ratio: 4/3;
      overflow: hidden;
      background: var(--ink);
    }

    .product-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .5s ease;
      filter: saturate(0.95);
    }

    .product-card:hover .product-media img {
      transform: scale(1.06);
    }

    .product-tag {
      position: absolute;
      top: 12px;
      left: 12px;
      font-family: 'IBM Plex Mono', monospace;
      font-size: 10.5px;
      letter-spacing: 0.06em;
      color: var(--paper);
      background: rgba(13, 13, 13, 0.72);
      padding: 5px 9px;
      border-radius: 2px;
    }

    .product-body {
      padding: 22px 22px 26px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .product-body h3 {
      font-family: 'Archivo', sans-serif;
      font-weight: 700;
      font-size: 19px;
      margin-bottom: 8px;
    }

    .product-body p {
      font-size: 13.5px;
      color: var(--muted-dark);
      line-height: 1.55;
      margin-bottom: 16px;
      flex: 1;
    }

    .product-link {
      font-size: 12.5px;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--ink);
    }

    .product-link .arrow {
      color: var(--signal);
      transition: transform .2s ease;
    }

    .product-card:hover .arrow {
      transform: translateX(3px);
    }

    /* ---------- about split ---------- */
    .about {
      background: var(--ink);
      color: var(--paper);
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 64px;
      align-items: center;
    }

    @media (max-width:860px) {
      .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
    }

    .about-media {
      position: relative;
    }

    .about-media .frame {
      position: relative;
      border: 1px solid var(--line);
      padding: 14px;
    }

    .about-media img {
      width: 100%;
      aspect-ratio: 5/4;
      object-fit: cover;
      filter: saturate(0.9);
    }

    .about-copy h2 {
      font-size: clamp(30px, 3.6vw, 44px);
      line-height: 1.08;
      margin-bottom: 22px;
    }

    .about-copy p {
      color: var(--muted);
      font-size: 15.5px;
      line-height: 1.75;
      margin-bottom: 18px;
      max-width: 480px;
    }

    .about-stats {
      display: flex;
      gap: 36px;
      margin-top: 32px;
      flex-wrap: wrap;
    }

    .stat b {
      display: block;
      font-family: 'Anton', sans-serif;
      font-size: 34px;
      color: var(--signal);
      line-height: 1;
    }

    .stat span {
      font-size: 12px;
      color: var(--muted);
      letter-spacing: 0.04em;
    }

    /* ---------- ink strip (texture / accent break) ---------- */
    .ink-strip {
      position: relative;
      height: 280px;
      overflow: hidden;
    }

    .ink-strip img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: saturate(1.1) contrast(1.05);
    }

    .ink-strip::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(13, 13, 13, 0.85) 0%, rgba(13, 13, 13, 0.15) 45%, rgba(13, 13, 13, 0.75) 100%);
    }

    .ink-strip-copy {
      position: absolute;
      inset: 0;
      z-index: 1;
      display: flex;
      align-items: center;
    }

    .ink-strip-copy .wrap {
      width: 100%;
    }

    .ink-strip-copy h3 {
      font-family: 'Anton', sans-serif;
      color: var(--paper);
      font-size: clamp(26px, 4vw, 44px);
      max-width: 640px;
      line-height: 1.05;
    }

    .ink-strip-copy h3 span {
      color: var(--signal-2);
    }

    /* ---------- corporate portals ---------- */
    .portals {
      background: var(--steel);
      color: var(--paper);
    }

    .portals-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 60px;
      align-items: start;
    }

    @media (max-width:860px) {
      .portals-grid {
        grid-template-columns: 1fr;
      }
    }

    .portals h2 {
      font-size: clamp(30px, 3.6vw, 46px);
      line-height: 1.08;
      margin-bottom: 20px;
    }

    .portals p {
      color: rgba(255, 255, 255, 0.75);
      font-size: 15.5px;
      line-height: 1.75;
      margin-bottom: 22px;
      max-width: 520px;
    }

    .feature-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .feature-list li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      font-size: 14.5px;
      color: rgba(255, 255, 255, 0.9);
      padding: 16px 18px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.14);
      border-radius: 3px;
    }

    .feature-list li b {
      color: var(--signal-2);
      font-family: 'IBM Plex Mono', monospace;
      font-size: 12px;
    }

    /* ---------- process (real sequence -> numbering justified) ---------- */
    .process {
      background: var(--paper);
    }

    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2px;
      background: var(--line-dark);
      border: 1px solid var(--line-dark);
    }

    @media (max-width:800px) {
      .process-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    .process-step {
      background: var(--paper);
      padding: 32px 24px;
      position: relative;
    }

    .process-step .num {
      font-family: 'Anton', sans-serif;
      font-size: 44px;
      color: rgba(13, 13, 13, 0.1);
      line-height: 1;
      margin-bottom: 18px;
    }

    .process-step h4 {
      font-family: 'Archivo', sans-serif;
      font-weight: 700;
      font-size: 16px;
      margin-bottom: 8px;
    }

    .process-step p {
      font-size: 13px;
      color: var(--muted-dark);
      line-height: 1.55;
    }

    /* ---------- footer ---------- */
    footer {
      background: var(--ink);
      color: var(--paper);
      position: relative;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 48px;
      padding: 72px 0 48px;
    }

    @media (max-width:800px) {
      .footer-top {
        grid-template-columns: 1fr 1fr;
        row-gap: 36px;
      }
    }

    .footer-top h5 {
      font-family: 'IBM Plex Mono', monospace;
      font-size: 11px;
      letter-spacing: 0.14em;
      color: var(--muted);
      margin-bottom: 16px;
    }

    .footer-top ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.82);
    }

    .footer-top ul a:hover {
      color: var(--signal-2);
    }

    .footer-brand p {
      color: var(--muted);
      font-size: 14px;
      line-height: 1.7;
      max-width: 340px;
      margin-top: 14px;
    }

    .footer-bottom {
      border-top: 1px solid var(--line);
      padding: 22px 0 60px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 12px;
      color: var(--muted);
      font-family: 'IBM Plex Mono', monospace;
    }