@media (max-width: 1180px) {
  .hero-layout {
    grid-template-columns: minmax(0, 1.06fr) minmax(440px, 0.94fr);
    gap: 1.5rem;
  }

  .feature-card {
    min-height: 430px;
  }

  .ai-layout {
    gap: 2.5rem;
  }

  .footer-main {
    grid-template-columns: 1.2fr 0.6fr 0.6fr 0.9fr;
    gap: 2.5rem;
  }
}

@media (max-width: 1080px) {
  .hero {
    padding-top: calc(var(--nav-height) + 4.5rem);
  }

  .hero-layout {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-copy {
    display: flex;
    align-items: center;
    flex-direction: column;
  }

  .hero-description {
    max-width: 760px;
  }

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

  .business-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-card {
    min-height: 345px;
  }

  .ai-products {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .product-card-ai:nth-child(3) {
    grid-column: 1 / -1;
    min-height: 430px;
  }

  .product-card-ai:nth-child(3) .capability-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: 650px;
  }

  .process-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2.25rem 1.5rem;
  }

  .process-list::before,
  .process-list::after {
    display: none;
  }

  .process-item {
    padding: 1.5rem;
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-md);
  }

  .ai-layout {
    grid-template-columns: minmax(280px, 0.8fr) minmax(480px, 1.2fr);
  }

  .value-card-large {
    grid-column: span 7;
  }

  .value-card {
    grid-column: span 5;
  }

  .value-card-wide {
    grid-column: 1 / -1;
  }

  .scenario-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .about-layout {
    grid-template-columns: minmax(0, 0.95fr) minmax(440px, 1.05fr);
    gap: 2.5rem;
  }

  .contact-layout {
    grid-template-columns: minmax(290px, 0.68fr) minmax(500px, 1.32fr);
  }

  .footer-main {
    grid-template-columns: 1.5fr 0.75fr 0.75fr;
  }

  .footer-cta {
    grid-column: 1 / -1;
    padding: 1.5rem 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-left: 0;
  }
}

@media (max-width: 960px) {
  :root {
    --nav-height: 70px;
  }

  .brand-link img {
    width: 188px;
  }

  .menu-toggle {
    display: flex;
  }

  .menu-panel {
    position: fixed;
    z-index: 1000;
    top: calc(var(--nav-height) + 8px);
    right: 24px;
    left: 24px;
    display: block;
    max-height: calc(100vh - var(--nav-height) - 28px);
    max-height: calc(100dvh - var(--nav-height) - 28px);
    overflow-y: auto;
    padding: 12px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 18px;
    box-shadow: 0 26px 70px rgba(11, 31, 58, 0.2);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px) scale(0.98);
    transform-origin: top;
    transition:
      opacity var(--duration-normal) var(--ease-standard),
      transform var(--duration-normal) var(--ease-standard);
  }

  .menu-panel.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0) scale(1);
  }

  .nav-list {
    align-items: stretch;
    flex-direction: column;
    gap: 2px;
  }

  .nav-link {
    min-height: 48px;
    padding-inline: 15px;
    border-radius: 9px;
    font-size: var(--font-size-base);
  }

  .nav-link:hover,
  .nav-link.active {
    background: var(--color-primary-soft);
  }

  .nav-link::after {
    top: 50%;
    right: auto;
    bottom: auto;
    left: 4px;
    width: 3px;
    height: 20px;
    transform: translateY(-50%) scaleY(0.3);
  }

  .nav-link.active::after {
    transform: translateY(-50%) scaleY(1);
  }

  .nav-cta {
    display: flex;
    width: 100%;
    margin-top: 10px;
  }

  .menu-backdrop {
    display: block;
    pointer-events: none;
  }

  .menu-backdrop.visible {
    opacity: 1;
    pointer-events: auto;
  }

  .core-products {
    grid-template-columns: 1fr;
  }

  .product-card-core {
    grid-template-columns: minmax(0, 1.1fr) minmax(250px, 0.9fr);
    grid-template-rows: 1fr;
    min-height: 530px;
  }

  .ai-layout {
    grid-template-columns: 1fr;
  }

  .ai-capabilities {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ai-demo {
    width: min(100%, 700px);
    margin-inline: auto;
  }

  .advantages-section .container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .advantages-intro {
    position: static;
    max-width: 720px;
  }

  .about-layout {
    grid-template-columns: 1fr;
  }

  .about-copy {
    max-width: 800px;
  }

  .about-figure {
    width: min(100%, 700px);
    margin: 0 auto;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }

  .contact-info {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 0 2.5rem;
  }

  .contact-info-top,
  .contact-info-intro,
  .contact-note {
    grid-column: 1;
  }

  .contact-details {
    grid-row: 1 / span 4;
    grid-column: 2;
    margin-top: 0;
  }
}

@media (max-width: 820px) {
  .section-heading-split {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .section-heading-split > p {
    padding: 0;
    border-left: 0;
  }

  .core-products {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .product-card-core {
    grid-template-columns: 1fr;
    grid-template-rows: auto 240px;
  }

  .process-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .value-card,
  .value-card-large {
    grid-column: span 6;
  }

  .value-card-large {
    min-height: 380px;
  }

  .value-card-wide {
    grid-column: 1 / -1;
    grid-template-columns: auto 1fr;
  }

  .scenario-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-info {
    display: block;
  }

  .contact-details {
    margin-top: var(--space-6);
  }
}

@media (max-width: 680px) {
  .container {
    width: auto;
    margin-inline: 0;
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
  }

  .site-header .container {
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
  }

  .menu-panel {
    right: max(16px, env(safe-area-inset-right));
    left: max(16px, env(safe-area-inset-left));
  }

  .section {
    padding-block: clamp(4.5rem, 16vw, 6rem);
  }

  .section-heading {
    margin-bottom: 2.5rem;
  }

  .section-heading h2,
  .contact-heading h2,
  .advantages-intro h2,
  .about-copy h2 {
    font-size: clamp(1.75rem, 8vw, 2.15rem);
    letter-spacing: -0.025em;
  }

  .hero {
    padding-top: calc(var(--nav-height) + 3.5rem);
  }

  .hero h1 {
    font-size: clamp(2rem, 9vw, 2.5rem);
    letter-spacing: -0.045em;
  }

  .hero h1 > .hero-secondary-line {
    margin-top: 0.28em;
    font-size: 0.68em;
  }

  .hero h1 > .hero-primary-line,
  .hero h1 > .hero-secondary-line {
    white-space: nowrap;
  }

  .hero-description {
    font-size: 0.98rem;
    line-height: 1.85;
  }

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

  .feature-card {
    min-height: 0;
    padding: 1.5rem;
  }

  .feature-card:hover,
  .product-card:hover,
  .value-card:hover,
  .scenario-card:hover {
    transform: none;
  }

  .core-products,
  .ai-products {
    gap: 1rem;
  }

  .core-products {
    grid-template-columns: 1fr;
  }

  .ai-products {
    grid-template-columns: 1fr;
  }

  .product-card-ai,
  .product-card-ai:nth-child(3) {
    min-height: 480px;
    grid-column: auto;
  }

  .product-card-ai:nth-child(3) .capability-list {
    grid-template-columns: 1fr;
  }

  .product-card-core {
    grid-template-rows: auto 220px;
    min-height: 0;
  }

  .product-card-content,
  .product-card-ai {
    padding: 1.4rem;
  }

  .product-description {
    line-height: 1.75;
  }

  .capability-list {
    gap: 9px 12px;
  }

  .product-card .capability-list li:nth-child(n + 5) {
    display: none;
  }

  .process-list {
    display: block;
    padding-left: 24px;
  }

  .process-list::before {
    display: block;
    top: 18px;
    bottom: 18px;
    left: 28px;
    width: 2px;
    height: auto;
    background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
  }

  .process-item {
    display: grid;
    min-height: 0;
    grid-template-columns: 66px minmax(0, 1fr);
    margin-bottom: 1rem;
    padding: 1.2rem 1.2rem 1.2rem 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    text-align: left;
  }

  .process-number {
    position: absolute;
    top: 20px;
    left: -24px;
    display: grid;
    width: 40px;
    height: 40px;
    place-items: center;
    margin: 0;
    color: var(--color-white);
    background: var(--color-navy);
    border: 4px solid var(--color-white);
    border-radius: 50%;
  }

  .process-content {
    grid-column: 2;
    margin-top: 0;
    padding-left: 6px;
  }

  .process-content p {
    margin-top: 5px;
  }

  .ai-capabilities {
    grid-template-columns: 1fr;
  }

  .ai-capability {
    grid-template-columns: 36px 1fr;
  }

  .ai-demo {
    padding: 10px;
    border-radius: 20px;
  }

  .ai-insight-grid {
    grid-template-columns: 1fr;
  }

  .question-examples button {
    min-height: 34px;
  }

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

  .value-card,
  .value-card-large,
  .value-card-wide {
    min-height: 0;
    grid-column: 1;
  }

  .value-card-large {
    padding-bottom: 150px;
  }

  .value-card-wide {
    display: block;
  }

  .value-card-wide > div:nth-of-type(2) {
    margin-top: var(--space-5);
  }

  .scenario-card {
    min-height: 220px;
  }

  .advantages-section .container {
    gap: 2rem;
  }

  .advantage-item {
    min-height: 0;
    grid-template-columns: 28px 48px minmax(0, 1fr);
    gap: 0.8rem;
  }

  .advantage-item img {
    width: 40px;
    height: 40px;
  }

  .about-principles > div {
    grid-template-columns: 72px 1fr;
  }

  .about-figure {
    width: calc(100% + 20px);
    margin-inline: -10px;
  }

  .contact-form-panel,
  .contact-info {
    padding: 1.35rem;
    border-radius: 18px;
  }

  .form-grid {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }

  .form-field-full {
    grid-column: auto;
  }

  .form-submit {
    width: 100%;
  }

  .form-privacy {
    display: block;
    margin: 10px 0 0;
  }

  .footer-main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding-block: 3.5rem 2.5rem;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-cta {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    align-items: flex-start;
    justify-content: center;
    flex-direction: column;
    padding-block: 1.25rem calc(1.25rem + env(safe-area-inset-bottom));
  }

  .back-to-top {
    right: max(16px, env(safe-area-inset-right));
    bottom: max(16px, env(safe-area-inset-bottom));
  }

  .reveal {
    transform: translateY(18px);
  }
}

@media (max-width: 460px) {
  .brand-link img {
    width: 172px;
  }

  .hero-eyebrow {
    font-size: 12px;
  }

  .hero-actions {
    width: 100%;
  }

  .hero-actions .button {
    width: 100%;
  }

  .hero-tags {
    display: grid;
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .hero-tags li {
    font-size: 12px;
  }

  .product-title-row {
    align-items: flex-start;
  }

  .product-title-row h3 {
    font-size: 1.35rem;
  }

  .capability-list {
    grid-template-columns: 1fr;
  }

  .product-card-core .capability-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .product-card-core {
    grid-template-rows: auto 200px;
  }

  .product-card-ai,
  .product-card-ai:nth-child(3) {
    min-height: 465px;
  }

  .ai-demo-topbar {
    align-items: flex-start;
  }

  .ai-demo-status {
    display: none;
  }

  .ai-summary-card {
    padding: 12px;
  }

  .summary-actions span:last-child {
    display: none;
  }

  .question-label {
    font-size: 10px;
  }

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

  .scenario-card {
    min-height: 0;
  }

  .advantage-item {
    grid-template-columns: 25px 1fr;
  }

  .advantage-item img {
    display: none;
  }

  .contact-details > div {
    grid-template-columns: 80px 1fr;
  }

  .form-panel-heading h3 {
    font-size: 1.3rem;
  }

  .footer-main {
    gap: 2rem 1rem;
  }
}

@media (max-width: 370px) {
  .brand-link img {
    width: 158px;
  }

  .menu-toggle {
    width: 44px;
    height: 44px;
  }

  .hero-eyebrow {
    padding-right: 9px;
    font-size: 11px;
  }

  .hero-tags {
    grid-template-columns: 1fr;
  }

  .product-card-core .capability-list {
    grid-template-columns: 1fr;
  }

  .product-card-core {
    grid-template-rows: auto 182px;
  }

  .footer-main {
    grid-template-columns: 1fr;
  }

  .footer-brand,
  .footer-cta {
    grid-column: 1;
  }
}