/* ==========================================================================
   Responsive System
   ========================================================================== */

@media (max-width: 1199px) {
  :root {
    --container-width: 1040px;
    --section-spacing: 96px;
  }

  .hero-container {
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
    gap: 64px;
  }

  .hero-title {
    font-size: clamp(3.25rem, 6.2vw, 5rem);
  }

  .hero-visual {
    min-height: 500px;
  }

  .logo-stage {
    width: min(100%, 560px);
  }

  .infinity-mark {
    font-size: clamp(14rem, 29vw, 24rem);
  }

  .services-grid {
    gap: 20px;
  }

  .service-card {
    padding: 32px;
  }
}

@media (max-width: 991px) {
  :root {
    --container-padding: 22px;
    --section-spacing: 84px;
    --section-spacing-sm: 60px;
    --font-size-5xl: 3.75rem;
    --font-size-4xl: 3rem;
    --font-size-3xl: 2.25rem;
  }

  .header-container {
    min-height: 76px;
  }

  .brand-logo {
    height: 46px;
  }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 28px;
    padding: 112px var(--container-padding) 40px;
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98)),
      var(--color-background);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-100%);
    transition:
      opacity var(--transition-slow),
      transform var(--transition-slow);
  }

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

  .nav-list {
    width: min(100%, 520px);
    margin-inline: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-link {
    min-height: 56px;
    justify-content: center;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-size: var(--font-size-xl);
    color: var(--color-text-strong);
  }

  .nav-link.active::after {
    right: 44%;
    bottom: 8px;
    left: 44%;
  }

  .header-cta {
    width: min(100%, 520px);
    min-height: 52px;
    margin-inline: auto;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .hero {
    min-height: auto;
    padding-block: 80px 96px;
  }

  .hero-container {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.78fr);
    gap: 48px;
  }

  .hero-title {
    font-size: clamp(2.85rem, 6vw, 4.15rem);
  }

  .hero-description {
    font-size: var(--font-size-base);
  }

  .hero-visual {
    min-height: 430px;
  }

  .logo-stage {
    width: min(100%, 430px);
  }

  .infinity-mark {
    font-size: clamp(11rem, 27vw, 18rem);
  }

  .infinity-label {
    bottom: -30px;
  }

  .services-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 52px;
  }

  .section-title {
    font-size: clamp(2.4rem, 6vw, 3.6rem);
  }

  .section-description {
    font-size: var(--font-size-base);
  }

  .why-caj-grid {
    margin-top: 52px;
  }

  .process-timeline {
    margin-top: 52px;
  }

  .technology-grid {
    margin-top: 52px;
  }
}

@media (max-width: 767px) {
  :root {
    --container-padding: 18px;
    --section-spacing: 72px;
    --section-spacing-sm: 48px;
    --font-size-5xl: 3rem;
    --font-size-4xl: 2.5rem;
    --font-size-3xl: 2rem;
    --font-size-2xl: 1.75rem;
  }

  .section {
    padding-block: var(--section-spacing);
  }

  .grid {
    gap: 20px;
  }

  .flex {
    gap: 14px;
  }

  .btn {
    min-height: 46px;
    padding-inline: 20px;
  }

  .header-container {
    min-height: 72px;
  }

  .brand-logo {
    height: 44px;
  }

  .site-nav {
    padding-top: 100px;
  }

  .hero {
    padding-block: 64px 80px;
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: 54px;
  }

  .hero-content {
    max-width: none;
    text-align: center;
  }

  .hero-title {
    max-width: 580px;
    margin-inline: auto;
    font-size: clamp(2.6rem, 11vw, 3.9rem);
  }

  .hero-description {
    max-width: 600px;
    margin-inline: auto;
  }

  .hero-actions,
  .hero-trust-list {
    justify-content: center;
  }

  .hero-visual {
    order: 2;
    min-height: 380px;
  }

  .logo-stage {
    width: min(100%, 420px);
  }

  .logo-stage::after {
    box-shadow:
      -100px -80px 70px rgba(0, 123, 255, 0.08),
      94px 76px 80px rgba(0, 194, 255, 0.08),
      20px -104px 70px rgba(11, 31, 58, 0.04);
  }

  .infinity-mark {
    font-size: clamp(10rem, 46vw, 18rem);
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    padding: 30px;
  }

  .why-caj-grid {
    grid-template-columns: 1fr;
  }

  .why-caj-card {
    padding: 30px;
  }

  .process-timeline {
    max-width: 720px;
  }

  .process-step-content {
    padding: 24px 26px;
  }

  .technology-category {
    padding: 30px;
  }
}

@media (max-width: 575px) {
  :root {
    --container-padding: 16px;
    --section-spacing: 64px;
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2.125rem;
    --font-size-3xl: 1.875rem;
    --font-size-xl: 1.375rem;
  }

  body {
    font-size: 0.975rem;
  }

  .btn {
    width: 100%;
  }

  .brand-logo {
    height: 40px;
    max-width: 190px;
  }

  .nav-link {
    font-size: var(--font-size-lg);
  }

  .hero {
    padding-block: 52px 68px;
  }

  .hero-badge {
    min-height: 34px;
    padding-inline: 12px;
    font-size: var(--font-size-xs);
  }

  .hero-title {
    margin-top: 26px;
    font-size: clamp(2.35rem, 12vw, 3.2rem);
    line-height: 1.06;
  }

  .hero-description {
    margin-top: 28px;
  }

  .hero-actions {
    margin-top: 36px;
  }

  .hero-trust-list {
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-top: 34px;
  }

  .hero-visual {
    min-height: 300px;
  }

  .logo-stage {
    width: min(100%, 330px);
  }

  .infinity-mark {
    font-size: clamp(8rem, 48vw, 13rem);
  }

  .infinity-label {
    bottom: -20px;
    font-size: var(--font-size-xs);
  }

  .section-title {
    font-size: clamp(2.1rem, 10vw, 2.9rem);
  }

  .services-grid {
    margin-top: 42px;
  }

  .service-card {
    padding: 26px;
  }

  .why-caj-title {
    font-size: clamp(2rem, 9vw, 2.7rem);
  }

  .why-caj-grid {
    margin-top: 42px;
  }

  .why-caj-card {
    padding: 26px;
  }

  .process-title {
    font-size: clamp(2rem, 9vw, 2.7rem);
  }

  .process-timeline {
    gap: 18px;
    margin-top: 42px;
  }

  .process-timeline::before {
    left: 25px;
  }

  .process-step {
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 16px;
  }

  .process-step-marker {
    width: 52px;
    height: 52px;
    font-size: var(--font-size-xs);
  }

  .process-step-content {
    min-height: auto;
    padding: 22px;
  }

  .process-step h3 {
    font-size: var(--font-size-lg);
  }

  .technologies-title {
    font-size: clamp(2rem, 9vw, 2.7rem);
  }

  .technology-grid {
    grid-template-columns: 1fr;
    margin-top: 42px;
  }

  .technology-category {
    padding: 26px;
  }

  .technology-chip-list {
    gap: 9px;
  }

  .card-body {
    padding: 20px;
  }
}