/* ==========================================================================
       CSS VARIABLES & THEME (Nordic Pine, Forest Slate, Sage & Mint)
       ========================================================================== */
    :root {
      --bg-base: #051F20;         /* Глубокий темно-хвойный фон */
      --bg-card: #0B2B26;         /* Матовая хвоя для блоков и карточек */
      --bg-card-hover: #163832;   /* Еловый графит (ховеры и выделения) */
      
      --border: #235347;          /* Хвойный контур */
      --border-light: rgba(142, 182, 155, 0.22);
      
      --accent-sage: #8EB69B;     /* Приглушенный благородный шалфей */
      --accent-mint: #DAEFE0;     /* Светлая пастельная мята */
      --accent-emerald: #10B981;  /* Изумрудный индикатор */
      
      --text-main: #EDF5F0;
      --text-sub: #BACFC2;
      --text-muted: #7A9985;

      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

      --container-max: 1140px;
      --header-height: 74px;
      --transition: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

    /* Reset & Base */
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-base);
      color: var(--text-main);
      font-size: 16px;
    }

    body {
      font-family: var(--font-sans);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
      position: relative;
    }

    /* Инженерная сетка и атмосферное фоновое свечение */
    .bg-grid {
      background-size: 38px 38px;
      background-image: 
        linear-gradient(to right, rgba(142, 182, 155, 0.035) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(142, 182, 155, 0.035) 1px, transparent 1px);
    }

    .ambient-glow {
      position: absolute;
      top: 0;
      left: 50%;
      transform: translateX(-50%);
      width: min(1000px, 95vw);
      height: 520px;
      background: radial-gradient(circle at 50% 20%, rgba(142, 182, 155, 0.16), rgba(11, 43, 38, 0.32) 55%, transparent 75%);
      pointer-events-none;
      z-index: 0;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--transition), background-color var(--transition), border-color var(--transition), transform var(--transition);
    }

    a:focus-visible {
      outline: 2px solid var(--accent-sage);
      outline-offset: 4px;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
      position: relative;
      z-index: 1;
    }

    .section {
      padding: 100px 0;
      position: relative;
      border-bottom: 1px solid var(--border);
    }

    .section-title {
      font-size: clamp(2rem, 3.8vw, 2.75rem);
      font-weight: 700;
      letter-spacing: -0.03em;
      line-height: 1.18;
      color: var(--accent-mint);
      margin-bottom: 16px;
    }

    .section-subtitle {
      font-size: 1.15rem;
      color: var(--text-sub);
      max-width: 720px;
      line-height: 1.6;
      margin-bottom: 48px;
    }

    .section-tag {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--accent-sage);
      display: inline-block;
      margin-bottom: 12px;
    }

    /* Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 14px 28px;
      border-radius: 6px;
      font-size: 0.95rem;
      font-weight: 700;
      letter-spacing: -0.01em;
      cursor: pointer;
      white-space: nowrap;
      transition: all var(--transition);
    }

    .btn-primary {
      background-color: var(--accent-sage);
      color: var(--bg-base);
      border: 1px solid var(--accent-sage);
      box-shadow: 0 4px 20px rgba(142, 182, 155, 0.18);
    }

    .btn-primary:hover {
      background-color: var(--accent-mint);
      border-color: var(--accent-mint);
      transform: translateY(-2px);
      box-shadow: 0 6px 24px rgba(218, 239, 224, 0.25);
    }

    .link-secondary {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--accent-sage);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 0;
      border-bottom: 1px solid transparent;
    }

    .link-secondary:hover {
      color: var(--accent-mint);
      border-color: var(--accent-mint);
    }

    /* ==========================================================================
       HEADER & NAVIGATION
       ========================================================================== */
    .site-header {
      position: sticky;
      top: 0;
      left: 0;
      right: 0;
      height: var(--header-height);
      background: rgba(5, 31, 32, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border);
      z-index: 1000;
    }

    .site-header .container {
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 1.15rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--text-main);
    }

    .logo-badge {
      width: 26px;
      height: 26px;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--accent-sage);
    }

    .nav-links {
      display: none;
      align-items: center;
      gap: 28px;
    }

    .nav-link {
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-sub);
    }

    .nav-link:hover {
      color: var(--accent-mint);
    }

    .header-cta-btn {
      padding: 10px 20px;
      font-size: 0.85rem;
      display: none;
    }

    /* Hamburger Menu Trigger */
    .hamburger {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      width: 26px;
      height: 18px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 0;
      z-index: 1100;
    }

    .hamburger span {
      display: block;
      width: 100%;
      height: 2px;
      background-color: var(--text-main);
      transition: transform var(--transition), opacity var(--transition);
    }

    .hamburger.is-active span:nth-child(1) {
      transform: translateY(8px) rotate(45deg);
    }
    .hamburger.is-active span:nth-child(2) {
      opacity: 0;
    }
    .hamburger.is-active span:nth-child(3) {
      transform: translateY(-8px) rotate(-45deg);
    }

    /* Mobile Drawer */
    .mobile-nav {
      position: fixed;
      top: var(--header-height);
      left: 0;
      width: 100%;
      background: var(--bg-base);
      border-bottom: 1px solid var(--border);
      padding: 32px 24px;
      display: flex;
      flex-direction: column;
      gap: 20px;
      transform: translateY(-100%);
      opacity: 0;
      pointer-events: none;
      transition: transform var(--transition), opacity var(--transition);
      z-index: 999;
    }

    .mobile-nav.is-open {
      transform: translateY(0);
      opacity: 1;
      pointer-events: auto;
    }

    .mobile-nav .nav-link {
      font-size: 1.1rem;
      color: var(--text-main);
      padding: 8px 0;
      border-bottom: 1px solid var(--border);
    }

    /* ==========================================================================
       HERO SECTION
       ========================================================================== */
    .hero-section {
      min-height: calc(100vh - var(--header-height));
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      padding: 64px 0 88px;
      position: relative;
    }

    .hero-content {
      max-width: 960px;
      margin: 0 auto;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 18px;
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: 100px;
      font-family: var(--font-mono);
      font-size: 0.8rem;
      font-weight: 500;
      color: var(--accent-mint);
      margin-bottom: 28px;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    }

    .hero-h1 {
      font-size: clamp(2.4rem, 5.2vw, 4.1rem);
      font-weight: 800;
      letter-spacing: -0.038em;
      line-height: 1.12;
      color: var(--text-main);
      margin-bottom: 24px;
    }

    .hero-subtitle {
      font-size: clamp(1.12rem, 2vw, 1.32rem);
      line-height: 1.65;
      color: var(--text-sub);
      max-width: 820px;
      margin: 0 auto 40px;
      font-weight: 400;
    }

    .hero-actions {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 18px;
    }

    /* ==========================================================================
       SECTION: ЭКСПЕРТИЗА (Two-Column Layout)
       ========================================================================== */
    .expertise-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 48px;
      align-items: start;
    }

    .expertise-text {
      font-size: 1.15rem;
      line-height: 1.75;
      color: var(--text-sub);
      border-left: 3px solid var(--accent-sage);
      padding-left: 28px;
    }

    .badges-stack {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .badge-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 22px 24px;
      display: flex;
      align-items: center;
      gap: 16px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      transition: all var(--transition);
    }

    .badge-card:hover {
      background: var(--bg-card-hover);
      border-color: var(--border-light);
      transform: translateX(4px);
    }

    .badge-icon {
      font-size: 1.4rem;
      flex-shrink: 0;
    }

    .expertise-footer-link {
      margin-top: 36px;
      display: inline-block;
    }

    /* ==========================================================================
       SECTION: МЕТОДОЛОГИЯ (4-Step Pipeline Grid)
       ========================================================================== */
    .methodology-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 20px;
    }

    .step-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 34px 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all var(--transition);
      position: relative;
    }

    .step-card:hover {
      background: var(--bg-card-hover);
      border-color: var(--border-light);
      transform: translateY(-2px);
    }

    .step-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 20px;
    }

    .step-badge {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--accent-sage);
      background: rgba(142, 182, 155, 0.12);
      padding: 4px 10px;
      border-radius: 4px;
    }

    .step-icon {
      font-size: 1.6rem;
    }

    .step-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--accent-mint);
      margin-bottom: 12px;
      letter-spacing: -0.015em;
    }

    .step-desc {
      font-size: 0.98rem;
      line-height: 1.65;
      color: var(--text-sub);
    }

    .step-deliverables {
      margin-top: 16px;
      padding-top: 16px;
      border-top: 1px solid var(--border);
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .step-deliverables li {
      font-size: 0.92rem;
      line-height: 1.5;
      color: var(--text-main);
      display: flex;
      align-items: flex-start;
      gap: 8px;
    }

    .step-deliverables li::before {
      content: "•";
      color: var(--accent-sage);
      font-weight: bold;
    }

    /* ==========================================================================
       SECTION: ОСНОВАТЕЛЬ (Profile Layout)
       ========================================================================== */
    .founder-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 48px 40px;
      display: grid;
      grid-template-columns: 1fr;
      gap: 36px;
      align-items: center;
      position: relative;
    }

    .founder-avatar-frame {
      width: 120px;
      height: 120px;
      border-radius: 12px;
      background: var(--bg-base);
      border: 2px solid var(--border-light);
      display: flex;
      position: relative;
      overflow: hidden; 
      align-items: center;
      justify-content: center;
      font-family: var(--font-mono);
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--accent-mint);
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
      flex-shrink: 0;
    }

    .founder-avatar-frame img {
      width: 100%;
      height: 100%;
      object-fit: cover;        /* Масштабирует фото под размер фрейма без искажения пропорций */
      object-position: center;   /* Центрирует лицо (при необходимости можно поставить top) */
      display: block;
    }

    .founder-content h3 {
      font-size: 1.85rem;
      font-weight: 700;
      color: var(--accent-mint);
      letter-spacing: -0.02em;
      margin-bottom: 6px;
    }

    .founder-role {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--accent-sage);
      line-height: 1.5;
      margin-bottom: 24px;
    }

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

    .founder-bio li {
      font-size: 1rem;
      line-height: 1.65;
      color: var(--text-sub);
      display: flex;
      gap: 12px;
    }

    .founder-bio li::before {
      content: "—";
      color: var(--accent-sage);
      font-weight: 700;
      flex-shrink: 0;
    }

    /* ==========================================================================
       SECTION: FINAL CTA
       ========================================================================== */
    .cta-section {
      background: var(--bg-card);
      text-align: center;
      padding: 110px 0;
    }

    .cta-box {
      max-width: 760px;
      margin: 0 auto;
    }

    .cta-title {
      font-size: clamp(2.1rem, 4vw, 3.2rem);
      font-weight: 800;
      color: var(--accent-mint);
      letter-spacing: -0.035em;
      margin-bottom: 20px;
      line-height: 1.15;
    }

    .cta-text {
      font-size: 1.15rem;
      line-height: 1.65;
      color: var(--text-sub);
      margin-bottom: 40px;
    }

    /* ==========================================================================
       FOOTER
       ========================================================================== */
    .site-footer {
      background: #031516;
      border-top: 1px solid var(--border);
      color: var(--text-muted);
      padding: 48px 0;
      font-size: 0.88rem;
    }

    .footer-inner {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 16px;
      text-align: center;
    }

    .footer-email {
      font-family: var(--font-mono);
      color: var(--accent-sage);
      letter-spacing: 0.02em;
    }

    .footer-email:hover {
      color: var(--accent-mint);
      text-decoration: underline;
    }

    /* ==========================================================================
       ANIMATIONS & OBSERVER
       ========================================================================== */
    .fade-section {
      opacity: 0;
      transform: translateY(22px);
      transition: opacity 0.8s var(--transition), transform 0.8s var(--transition);
      will-change: opacity, transform;
    }

    .fade-section.is-visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ==========================================================================
       RESPONSIVE BREAKPOINTS
       ========================================================================== */
    @media (min-width: 768px) {
      .header-cta-btn {
        display: inline-flex;
      }

      .hero-actions {
        flex-direction: row;
        gap: 24px;
      }

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

      .founder-card {
        grid-template-columns: auto 1fr;
        gap: 44px;
      }

      .footer-inner {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
      }
    }

    @media (min-width: 992px) {
      .nav-links {
        display: flex;
      }

      .hamburger {
        display: none;
      }

      .mobile-nav {
        display: none;
      }

      .expertise-grid {
        grid-template-columns: 1.15fr 0.85fr;
      }

      .methodology-grid {
        grid-template-columns: repeat(4, 1fr);
      }
    }