@media (max-width: 1100px) {
  main {
    padding-top: 92px;
  }

  .site-header {
    height: 92px;
    padding: 0 22px;
  }

  .site-nav {
    gap: 28px;
    font-size: 15px;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 72px;
  }

  .hero-visual {
    min-height: 600px;
  }

  .hero-phone {
    left: 50%;
  }

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

  .showcase,
  .security {
    grid-template-columns: 1fr;
  }

  .download-section {
    grid-template-columns: 1fr;
  }

  .download-scene {
    display: none;
  }
}

@media (max-width: 760px) {
  main {
    padding-top: 76px;
  }

  .site-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    height: 76px;
    gap: 14px;
    width: 100%;
    overflow: hidden;
  }

  .brand {
    gap: 10px;
    font-size: 23px;
    min-width: 0;
  }

  .brand img {
    width: 42px;
    height: 42px;
    border-radius: 11px;
  }

  .site-nav {
    display: none;
  }

  .nav-cta {
    display: none;
  }

  .section-band,
  .feature-strip,
  .security,
  .download-section,
  .site-footer {
    width: min(100% - 24px, 1240px);
  }

  .hero {
    min-height: 0;
    padding: 44px 18px 24px;
  }

  h1 {
    font-size: 54px;
  }

  .hero-subtitle {
    margin-top: 18px;
    font-size: 22px;
  }

  .hero-tags {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 8px;
    margin-top: 26px;
    font-size: 14px;
  }

  .hero-actions {
    gap: 12px;
    margin-top: 28px;
  }

  .btn {
    min-width: 138px;
    min-height: 48px;
    padding: 0 18px;
    font-size: 16px;
  }

  .hero-note {
    margin-top: 20px;
  }

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

  .hero-phone {
    top: 18px;
    width: min(285px, 78vw);
    transform: translateX(-50%) rotate(5deg);
  }

  .float-badge {
    transform: scale(0.78);
  }

  .badge-heart {
    left: 4px;
    top: 74px;
  }

  .badge-chat {
    left: 18px;
    bottom: 110px;
  }

  .badge-vip {
    right: 0;
    top: 126px;
  }

  .badge-star {
    right: 20px;
    top: 295px;
  }

  .badge-present {
    right: -18px;
    bottom: 62px;
  }

  .feature-strip {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 16px;
    padding: 0;
    background: transparent;
    box-shadow: none;
  }

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

  .feature-visual {
    left: 50%;
    right: auto;
    bottom: 28px;
    transform: translateX(-50%);
  }

  .pin-visual {
    transform: translateX(-50%) rotate(-45deg);
  }

  .feature-title {
    font-size: 24px;
  }

  .showcase {
    gap: 30px;
    padding: 48px 16px 42px;
    margin-top: 18px;
  }

  .section-copy h2,
  .security h2,
  .download-brand h2 {
    font-size: 30px;
  }

  .section-copy p,
  .security-copy p {
    margin-top: 16px;
    font-size: 15px;
  }

  .check-list {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 26px;
  }

  .phone-stack {
    justify-content: flex-start;
    min-height: 420px;
    overflow-x: auto;
    padding: 6px 18px 28px;
    scroll-snap-type: x mandatory;
  }

  .phone-stack .phone {
    scroll-snap-align: center;
  }

  .main-phone,
  .side-phone {
    width: 220px;
  }

  .side-phone:first-child,
  .side-phone:last-child {
    margin: 0;
    transform: none;
  }

  .security {
    gap: 28px;
    padding: 34px 16px;
    margin-top: 18px;
  }

  .security-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .security-grid article {
    padding: 16px 8px;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .shield {
    width: 56px;
    height: 56px;
  }

  .download-section {
    min-height: 0;
    margin-top: 20px;
    padding: 18px;
    background:
      linear-gradient(rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.9)),
      url("./assets/download-scene.png") center / cover;
  }

  .download-panel {
    padding: 24px 16px;
  }

  .download-brand {
    justify-content: flex-start;
  }

  .download-brand img {
    width: 56px;
    height: 56px;
  }

  .download-brand p {
    font-size: 16px;
  }

  .download-body {
    gap: 16px;
  }

  .store {
    width: 100%;
  }

  .contact-card {
    padding: 16px;
  }

  .site-footer {
    display: block;
    text-align: center;
    line-height: 1.9;
    padding-bottom: 36px;
  }

  .site-footer p {
    max-width: 330px;
    margin: 8px auto 0;
    overflow-wrap: anywhere;
  }
}

@media (max-width: 430px) {
  .hero-actions,
  .download-body {
    align-items: stretch;
  }

  .btn,
  .store {
    width: 100%;
  }

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