@media (max-width: 767px) {
  .nav__links {
    display: none;
  }

  .nav__inner {
    position: relative;
    z-index: 102;
  }

  .nav__burger {
    width: 48px;
    height: 48px;
    margin-left: auto;
    padding: 0;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    border: 1px solid rgba(28,79,255,0.16);
    border-radius: 999px;
    background: rgba(255,255,255,0.86);
    box-shadow: var(--sh-soft);
    cursor: pointer;
    transition: background 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
  }

  .nav__burger span {
    width: 22px;
    height: 2px;
    border-radius: 99px;
    background: var(--blue);
    transition: transform 0.28s var(--ease), opacity 0.22s var(--ease);
  }

  .nav--open .nav__burger {
    background: var(--blue);
    border-color: var(--blue);
  }

  .nav--open .nav__burger span {
    background: var(--white);
  }

  .nav--open .nav__burger span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav--open .nav__burger span:nth-child(2) {
    opacity: 0;
  }

  .nav--open .nav__burger span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav__menu {
    position: fixed;
    top: 70px;
    left: 12px;
    right: 12px;
    z-index: 101;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 18px;
    border: 1px solid rgba(255,255,255,0.72);
    border-radius: var(--r-page);
    background: rgba(255,255,255,0.92);
    box-shadow: var(--sh-card);
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
  }

  .nav--open .nav__menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav__menu a:not(.btn) {
    min-height: 48px;
    display: flex;
    align-items: center;
    padding: 14px;
    border-radius: 18px;
    color: var(--ink);
    font-size: 1.1rem;
    font-weight: 700;
  }

  .nav__menu a:not(.btn):hover {
    background: rgba(28,79,255,0.08);
    color: var(--blue);
  }

  .nav__menu .btn {
    width: 100%;
    min-height: 52px;
    margin-top: 8px;
    justify-content: center;
  }

  .about {
    padding: 64px 0;
  }

  .ogp {
    padding: 56px 0;
    border-radius: 28px;
    margin: 0 8px;
  }

  .pillars {
    padding: 60px 0;
  }

  .product {
    padding: 56px 0;
    border-radius: 28px;
    margin: 0 8px;
  }

  .mvv {
    padding: 60px 0;
  }

  .team {
    padding: 0 0 60px;
  }

  .cta {
    padding: 64px 0;
    border-radius: 28px;
    margin: 0 8px 20px;
  }

  .section-head {
    margin-bottom: 36px;
  }

  .section-head__sub {
    font-size: 1rem;
  }

  .section-head__sub br,
  .product__copy p br,
  .ogp__card p br {
    display: none;
  }

  .hero {
    padding-top: 130px;
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 0 18px;
  }

  .hero__copy,
  .hero__sub,
  .hero__actions,
  .hero__stats,
  .eyebrow {
    width: 100%;
    max-width: 100%;
  }

  .hero__title {
    font-size: clamp(2.2rem, 9vw, 2.9rem);
  }

  .hero__stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .stat__num {
    font-size: 2.05rem;
  }

  .stat__label {
    line-height: 1.25;
  }

  .hero__visual {
    min-height: auto;
    max-width: 100%;
    margin: 0;
  }

  .system-orbit {
    display: none;
  }

  .system-stack {
    width: 100%;
    margin: 0;
    gap: 14px;
  }

  .system-card {
    transform: none;
    padding: 20px 22px;
  }

  .system-card h3 {
    font-size: 1.6rem;
  }

  .system-axis {
    position: static;
    justify-content: center;
    margin-top: 18px;
    font-size: 0.66rem;
  }

  .marquee {
    transform: none;
    margin-top: 36px;
  }

  .marquee__track span {
    font-size: 1.2rem;
  }

  .hero__actions {
    width: 100%;
  }

  .hero__actions .btn,
  .about__body .btn {
    width: 100%;
    justify-content: center;
    min-height: 52px;
    padding: 15px 20px;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 22px;
    margin-bottom: 48px;
  }

  .about__body {
    padding-top: 0 !important;
  }

  .split {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .split__vs span {
    width: 48px;
    height: 48px;
    transform: rotate(90deg);
  }

  .split__card {
    padding: 28px;
  }

  .ogp .section-head h2 {
    white-space: normal !important;
  }

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

  .ogp__card {
    min-height: auto;
    padding: 30px 26px;
  }

  .ogp__ghost {
    font-size: 11rem;
    top: -30px;
  }

  .journey__step {
    grid-template-columns: 48px 1fr;
    gap: 14px;
  }

  .journey__num {
    width: 46px;
    height: 46px;
    font-size: 0.95rem;
  }

  .journey__card {
    padding: 24px 22px;
  }

  .journey__card h3 {
    font-size: 1.55rem;
  }

  .journey__role {
    display: inline-block;
    margin: 8px 0 0;
  }

  .product__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .product__modules {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .product__modules article {
    min-height: auto;
  }

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

  .mvv__card {
    padding: 30px;
  }

  .mvv__card p {
    font-size: 1.1rem;
  }

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

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

  .member {
    flex-direction: column;
    text-align: center;
    padding: 28px;
  }

  .contact-options {
    grid-template-columns: 1fr;
    max-width: 520px;
  }

  .cta h2 {
    font-size: clamp(1.8rem, 7vw, 2.4rem);
  }

  .cta__mark {
    right: -74px;
    bottom: -84px;
    width: min(68vw, 280px);
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }

  .footer__nav {
    margin: 0;
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (min-width: 400px) and (max-width: 767px) {
  .values {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 380px) {
  .hero__title {
    font-size: clamp(2rem, 8.5vw, 2.4rem);
  }

  .hero__stats {
    gap: 10px;
  }

  .ogp__ghost {
    font-size: 9rem;
  }
}