:root {
    --bg: #0d1d32;
    --bg-dark: #071321;
    --bg-soft: #10243c;
    --bg-light: #f7fafc;
    --text: #506278;
    --text-dark: #27384b;
    --text-light: #d9e8f2;
    --muted: #7c94aa;
    --line: #deecef;
    --accent: #0dcaf2;
    --accent-dark: #2bb6e8;
    --white: #ffffff;
    --shadow: 0 22px 60px rgba(13, 29, 50, 0.16);
    --radius: 18px;
    --transition: 220ms ease;
  }
  
  * {
    box-sizing: border-box;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--text);
    background: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
  }
  
  body.no-scroll {
    overflow: hidden;
  }
  
  a {
    color: inherit;
    text-decoration: none;
  }
  
  button,
  input,
  textarea {
    font: inherit;
  }
  
  .container {
    width: min(1160px, calc(100% - 40px));
    margin: 0 auto;
  }
  
  #preloader {
    background: var(--bg);
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 450ms ease, visibility 450ms ease;
  }
  
  #preloader.is-hidden {
    opacity: 0;
    visibility: hidden;
  }
  
  .spinner {
    width: 50px;
    height: 40px;
    text-align: center;
    font-size: 10px;
  }
  
  .spinner > div {
    background-color: var(--accent);
    height: 100%;
    width: 6px;
    display: inline-block;
    border-radius: 3px;
    animation: sk-stretchdelay 1.2s infinite ease-in-out;
  }
  
  .spinner .rect2 {
    animation-delay: -1.1s;
  }
  
  .spinner .rect3 {
    animation-delay: -1s;
  }
  
  .spinner .rect4 {
    animation-delay: -0.9s;
  }
  
  .spinner .rect5 {
    animation-delay: -0.8s;
  }
  
  @keyframes sk-stretchdelay {
    0%,
    40%,
    100% {
      transform: scaleY(0.4);
    }
  
    20% {
      transform: scaleY(1);
    }
  }
  
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1200;
    min-height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 42px;
    color: var(--white);
    transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
  }
  
  .site-header.scrolled,
  .site-header.menu-open {
    background: rgba(13, 29, 50, 0.96);
    box-shadow: 0 12px 34px rgba(0, 0, 0, 0.22);
    backdrop-filter: blur(14px);
  }
  
  .site-header.scrolled {
    padding-top: 12px;
    padding-bottom: 12px;
  }
  
  .header-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    letter-spacing: 0.2px;
  }
  
  .logo-mark,
  .splash-logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--bg);
    font-weight: 800;
    box-shadow: 0 0 28px rgba(13, 202, 242, 0.28);
  }
  
  .logo-mark {
    width: 42px;
    height: 42px;
    border-radius: 13px;
    font-size: 14px;
  }

  .logo-img {
    display: block;
    width: 210px;
    max-width: 100%;
    height: auto;
    object-fit: contain;
  }
  
  .splash-logo-img {
    display: block;
    width: min(560px, 92vw);
    max-width: 100%;
    height: auto;
    margin: 0 auto;
    filter: drop-shadow(0 18px 42px rgba(13, 202, 242, 0.18));
  }
  
  .logo-text {
    font-size: 19px;
  }
  
  .header-menu {
    margin-left: auto;
    margin-right: 20px;
  }
  
  .header-nav {
    display: flex;
    align-items: center;
    gap: 22px;
    list-style: none;
    padding: 0;
    margin: 0;
  }
  
  .header-nav a {
    position: relative;
    display: inline-block;
    font-size: 14px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.78);
    padding: 8px 0;
    transition: color var(--transition);
  }
  
  .header-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 2px;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition);
  }
  
  .header-nav a:hover,
  .header-nav a.active {
    color: var(--white);
  }
  
  .header-nav a:hover::after,
  .header-nav a.active::after {
    width: 100%;
  }
  
  .mobile-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 0;
    background: transparent;
    cursor: pointer;
    padding: 8px;
  }
  
  .mobile-toggle span {
    display: block;
    width: 26px;
    height: 3px;
    border-radius: 999px;
    margin: 5px auto;
    background: var(--white);
    transition: transform var(--transition), opacity var(--transition);
  }
  
  .site-header.menu-open .mobile-toggle span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .site-header.menu-open .mobile-toggle span:nth-child(2) {
    opacity: 0;
  }
  
  .site-header.menu-open .mobile-toggle span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .home-section {
    position: relative;
    padding: 110px 0;
  }
  
  .splash-section {
    min-height: 100vh;
    padding: 118px 0 40px;
    background:
      radial-gradient(circle at 18% 25%, rgba(13, 202, 242, 0.12), transparent 32%),
      radial-gradient(circle at 78% 20%, rgba(43, 182, 232, 0.12), transparent 30%),
      linear-gradient(135deg, #081421 0%, #0d1d32 56%, #132b47 100%);
    color: var(--white);
    overflow: hidden;
  }
  
  .splash-section::before,
  .splash-section::after {
    content: "";
    position: absolute;
    border: 1px solid rgba(222, 236, 239, 0.16);
    transform: rotate(28deg);
    pointer-events: none;
  }
  
  .splash-section::before {
    width: 210px;
    height: 210px;
    top: 120px;
    left: -90px;
  }
  
  .splash-section::after {
    width: 340px;
    height: 340px;
    right: -160px;
    bottom: 70px;
  }
  
  .splash-container {
    position: relative;
    min-height: calc(100vh - 160px);
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  
  .splash-content {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 54px 0 88px;
  }
  
  .splash-logo {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
  }
  
  .splash-logo-mark {
    width: 62px;
    height: 62px;
    border-radius: 19px;
    font-size: 20px;
  }
  
  .splash-logo-text {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 800;
    letter-spacing: -1.4px;
  }
  
  .splash-content h1 {
    max-width: 850px;
    margin: 0 auto 18px;
    font-size: clamp(34px, 6vw, 72px);
    line-height: 1.04;
    letter-spacing: -2.4px;
  }
  
  .splash-content p {
    max-width: 720px;
    margin: 0 auto 54px;
    color: rgba(217, 232, 242, 0.84);
    font-size: 18px;
  }
  
  #splash-nav {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(5, minmax(120px, 1fr));
    gap: 18px;
    max-width: 980px;
    padding: 0;
    margin: 0 auto;
  }
  
  #splash-nav a {
    position: relative;
    display: flex;
    min-height: 148px;
    padding: 24px 16px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    color: rgba(255, 255, 255, 0.82);
    background: rgba(255, 255, 255, 0.035);
    border: 1px solid rgba(222, 236, 239, 0.13);
    border-radius: 24px;
    overflow: hidden;
    transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
  }
  
  #splash-nav a::before {
    content: "";
    position: absolute;
    inset: -80px;
    background: radial-gradient(circle, rgba(13, 202, 242, 0.18), transparent 60%);
    opacity: 0;
    transform: scale(0.6);
    transition: opacity var(--transition), transform var(--transition);
  }
  
  #splash-nav a:hover {
    transform: translateY(-8px);
    border-color: rgba(13, 202, 242, 0.48);
    background: rgba(13, 202, 242, 0.06);
    box-shadow: 0 22px 60px rgba(0, 0, 0, 0.26);
  }
  
  #splash-nav a:hover::before {
    opacity: 1;
    transform: scale(1);
  }
  
  .item-icon {
    position: relative;
    z-index: 1;
    display: block;
    width: 76px;
    height: 76px;
  }
  
  .item-icon svg {
    width: 100%;
    height: 100%;
    fill: #506278;
    transition: fill var(--transition), transform var(--transition);
  }
  
  #splash-nav a:hover svg {
    fill: var(--accent);
    transform: scale(1.05);
  }
  
  #splash-nav span:last-child {
    position: relative;
    z-index: 1;
    font-weight: 800;
    font-size: 14px;
  }
  
  .splash-footer {
    position: relative;
    z-index: 4;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 20px;
    color: rgba(217, 232, 242, 0.72);
    font-size: 14px;
  }
  
  .splash-footer a:last-child {
    justify-self: end;
    color: rgba(217, 232, 242, 0.72);
    text-decoration: underline;
    text-underline-offset: 4px;
    transition: color var(--transition);
  }
  
  .splash-footer a:last-child:hover {
    color: var(--accent);
  }
  
  .go-down {
    display: inline-flex;
    width: 48px;
    height: 48px;
    transition: transform var(--transition);
  }
  
  .go-down:hover {
    transform: translateY(5px);
  }
  
  .go-down svg {
    width: 48px;
    height: 48px;
    fill: #435363;
    transition: fill var(--transition);
  }
  
  .go-down:hover svg {
    fill: var(--accent);
  }
  
  #splash-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0.5;
    background-image:
      linear-gradient(rgba(222, 236, 239, 0.045) 1px, transparent 1px),
      linear-gradient(90deg, rgba(222, 236, 239, 0.045) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: radial-gradient(circle at center, black 0%, transparent 72%);
  }
  
  .section-header {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 54px;
    align-items: center;
    margin-bottom: 62px;
  }
  
  .section-icon {
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .section-icon svg {
    width: min(260px, 100%);
    max-height: 160px;
    fill: var(--accent-dark);
  }
  
  .section-icon svg path:nth-child(n + 2) {
    fill: none;
    stroke: var(--line);
  }
  
  .header-content h2 {
    margin: 0 0 22px;
    font-size: clamp(34px, 5vw, 58px);
    line-height: 1.05;
    color: var(--text-dark);
    letter-spacing: -1.5px;
  }
  
  .header-content p {
    margin: 0;
    max-width: 760px;
    font-size: 17px;
    color: var(--text);
  }
  
  .alt-section {
    background: var(--bg-light);
  }
  
  .cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
  }
  
  .feature-card {
    position: relative;
    min-height: 260px;
    padding: 28px;
    border-radius: var(--radius);
    background: var(--white);
    border: 1px solid rgba(222, 236, 239, 0.9);
    box-shadow: 0 10px 34px rgba(13, 29, 50, 0.06);
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  }
  
  .feature-card::before {
    content: "";
    position: absolute;
    inset: auto -80px -100px auto;
    width: 180px;
    height: 180px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(13, 202, 242, 0.18), transparent 65%);
    opacity: 0;
    transition: opacity var(--transition), transform var(--transition);
  }
  
  .feature-card:hover {
    transform: translateY(-8px);
    border-color: rgba(13, 202, 242, 0.45);
    box-shadow: var(--shadow);
  }
  
  .feature-card:hover::before {
    opacity: 1;
    transform: translate(-20px, -18px);
  }
  
  .card-icon {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    background: rgba(13, 202, 242, 0.1);
    color: var(--accent-dark);
    font-weight: 800;
  }
  
  .feature-card h3 {
    margin: 0 0 12px;
    color: var(--text-dark);
    font-size: 20px;
    line-height: 1.2;
  }
  
  .feature-card p {
    margin: 0;
    color: var(--muted);
    font-size: 15px;
  }
  
  .stats-list {
    display: grid;
    gap: 16px;
  }
  
  .stat-item {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 24px;
    align-items: center;
    padding: 24px 30px;
    background: var(--white);
    border: 1px solid rgba(222, 236, 239, 0.95);
    border-radius: var(--radius);
    box-shadow: 0 10px 28px rgba(13, 29, 50, 0.045);
    transition: transform var(--transition), border-color var(--transition);
  }
  
  .stat-item:hover {
    transform: translateX(8px);
    border-color: rgba(13, 202, 242, 0.55);
  }
  
  .stats-no {
    display: block;
    color: var(--accent-dark);
    font-size: 42px;
    line-height: 1;
    font-weight: 800;
  }
  
  .stats-txt {
    color: var(--text-dark);
    font-size: 18px;
  }
  
  .process-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 26px;
    padding: 42px;
    background: #f9fbfc;
    border-radius: 28px;
    border: 1px solid var(--line);
  }
  
  .process-grid article {
    padding: 28px;
    background: var(--white);
    border-radius: 20px;
    box-shadow: 0 10px 28px rgba(13, 29, 50, 0.05);
    transition: transform var(--transition), box-shadow var(--transition);
  }
  
  .process-grid article:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
  }
  
  .process-grid h3 {
    margin: 0 0 12px;
    color: var(--accent-dark);
    font-size: 21px;
  }
  
  .process-grid p {
    margin: 0;
    color: var(--text);
  }
  
  .process-note {
    margin: 28px auto 0;
    max-width: 820px;
    color: var(--muted);
    font-style: italic;
    text-align: center;
  }
  
  .tech-box {
    max-width: 900px;
    margin-left: auto;
    padding: 34px;
    border-radius: 24px;
    background: var(--white);
    border: 1px solid rgba(222, 236, 239, 0.95);
    box-shadow: 0 12px 36px rgba(13, 29, 50, 0.06);
  }
  
  .tech-box p {
    margin: 0;
    padding: 16px 0;
    border-bottom: 1px solid rgba(222, 236, 239, 0.9);
    color: var(--text);
  }
  
  .tech-box p:first-child {
    padding-top: 0;
  }
  
  .tech-box p:last-child {
    padding-bottom: 0;
    border-bottom: 0;
  }
  
  .tech-box strong {
    color: var(--text-dark);
  }
  
  .contact-grid {
    display: grid;
    grid-template-columns: 0.95fr 1.25fr;
    gap: 34px;
    align-items: stretch;
  }
  
  .contact-data,
  .contact-form {
    border-radius: 24px;
    border: 1px solid rgba(222, 236, 239, 0.9);
    background: var(--white);
    box-shadow: 0 14px 42px rgba(13, 29, 50, 0.07);
  }
  
  .contact-data {
    padding: 36px;
  }
  
  .contact-data h3 {
    margin: 0 0 26px;
    color: var(--text-dark);
    font-size: 30px;
  }
  
  .contact-data h5 {
    margin: 28px 0 10px;
    color: var(--accent-dark);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 12px;
  }
  
  .contact-data p {
    margin: 6px 0;
  }
  
  .contact-data a {
    color: var(--text-dark);
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 4px;
  }
  
  .contact-form {
    padding: 34px;
    display: grid;
    gap: 18px;
  }
  
  .contact-form label {
    display: grid;
    gap: 8px;
    color: var(--text-dark);
    font-weight: 700;
    font-size: 14px;
  }
  
  .contact-form input,
  .contact-form textarea {
    width: 100%;
    border: 1px solid rgba(124, 148, 170, 0.35);
    border-radius: 14px;
    padding: 14px 16px;
    color: var(--text-dark);
    background: #fbfdff;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
  }
  
  .contact-form input:focus,
  .contact-form textarea:focus {
    border-color: rgba(13, 202, 242, 0.75);
    box-shadow: 0 0 0 4px rgba(13, 202, 242, 0.12);
  }
  
  .contact-form textarea {
    resize: vertical;
    min-height: 150px;
  }
  
  .contact-form button {
    justify-self: start;
    border: 0;
    border-radius: 999px;
    padding: 14px 28px;
    color: var(--bg);
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 14px 30px rgba(13, 202, 242, 0.26);
    transition: transform var(--transition), box-shadow var(--transition);
  }
  
  .contact-form button:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 38px rgba(13, 202, 242, 0.34);
  }
  
  .site-footer {
    padding: 34px 0;
    background: var(--bg-dark);
    color: rgba(217, 232, 242, 0.78);
  }
  
  .footer-grid {
    display: grid;
    grid-template-columns: 1.25fr 0.9fr 0.7fr;
    gap: 30px;
    align-items: center;
  }
  
  .footer-grid div {
    display: grid;
    gap: 5px;
  }
  
  .footer-grid strong {
    color: var(--white);
  }
  
  .footer-grid a {
    color: rgba(217, 232, 242, 0.78);
    text-decoration: underline;
    text-underline-offset: 4px;
    transition: color var(--transition);
  }
  
  .footer-grid a:hover {
    color: var(--accent);
  }
  
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 700ms ease, transform 700ms ease;
  }
  
  .reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
  
  @media (max-width: 1024px) {
    .site-header {
      padding-left: 24px;
      padding-right: 24px;
    }
  
    .header-nav {
      gap: 14px;
    }
  
    #splash-nav {
      grid-template-columns: repeat(3, 1fr);
    }
  
    .section-header {
      grid-template-columns: 190px 1fr;
      gap: 34px;
    }
  
    .cards-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  
    .footer-grid {
      grid-template-columns: 1fr;
      text-align: center;
    }
  }
  
  @media (max-width: 820px) {
    .mobile-toggle {
      display: block;
    }
  
    .header-menu {
      position: fixed;
      top: 78px;
      left: 0;
      width: 100%;
      max-height: 0;
      overflow: hidden;
      margin: 0;
      background: rgba(13, 29, 50, 0.98);
      transition: max-height 300ms ease;
      box-shadow: 0 18px 34px rgba(0, 0, 0, 0.24);
    }
  
    .site-header.menu-open .header-menu {
      max-height: 430px;
    }
  
    .header-nav {
      display: grid;
      gap: 0;
      padding: 12px 24px 24px;
    }
  
    .header-nav a {
      display: block;
      padding: 14px 0;
      border-bottom: 1px solid rgba(222, 236, 239, 0.1);
    }
  
    .section-header {
      grid-template-columns: 1fr;
      text-align: center;
    }
  
    .section-icon svg {
      max-width: 190px;
    }
  
    .header-content p {
      margin-left: auto;
      margin-right: auto;
    }
  
    .process-grid,
    .contact-grid {
      grid-template-columns: 1fr;
    }
  
    .tech-box {
      margin-left: 0;
    }
  }
  
  @media (max-width: 620px) {
    .container {
      width: min(100% - 28px, 1160px);
    }
  
    .site-header {
      min-height: 70px;
      padding: 12px 16px;
    }
  
    .logo-text {
      font-size: 16px;
    }
  
    .logo-mark {
      width: 38px;
      height: 38px;
    }

    .logo-img {
        display: block;
        width: 210px;
        max-width: 100%;
        height: auto;
        object-fit: contain;
      }
      
      .splash-logo-img {
        display: block;
        width: min(560px, 92vw);
        max-width: 100%;
        height: auto;
        margin: 0 auto;
        filter: drop-shadow(0 18px 42px rgba(13, 202, 242, 0.18));
      }
  
    .header-menu {
      top: 70px;
    }
  
    .home-section {
      padding: 78px 0;
    }
  
    .splash-section {
      padding-top: 96px;
    }
  
    .splash-content {
      padding-bottom: 54px;
    }
  
    .splash-logo {
      display: grid;
      justify-items: center;
    }
  
    .splash-content p {
      font-size: 16px;
      margin-bottom: 34px;
    }
  
    #splash-nav {
      grid-template-columns: 1fr;
      gap: 14px;
    }
  
    #splash-nav a {
      min-height: 106px;
      flex-direction: row;
      justify-content: flex-start;
      padding: 18px 22px;
    }
  
    .item-icon {
      width: 54px;
      height: 54px;
    }
  
    .splash-footer {
      grid-template-columns: 1fr;
      text-align: center;
    }
  
    .splash-footer a:last-child {
      justify-self: center;
    }
  
    .cards-grid {
      grid-template-columns: 1fr;
    }
  
    .stat-item {
      grid-template-columns: 1fr;
      gap: 10px;
      padding: 22px;
    }
  
    .stats-no {
      font-size: 34px;
    }
  
    .stats-txt {
      font-size: 16px;
    }
  
    .process-grid {
      padding: 18px;
    }
  
    .process-grid article,
    .contact-data,
    .contact-form,
    .tech-box {
      padding: 24px;
    }
  }