@media (max-width: 1024px) {
  .page-shell {
    width: min(100% - 20px, 1180px);
    padding-top: 14px;
  }

  .site-header {
    top: 8px;
    width: min(100%, 860px);
    padding: 10px 14px;
  }

  main {
    gap: 18px;
    padding-top: 18px;
  }

  .content-section,
  .site-footer {
    width: 100%;
  }

  .hero {
    grid-template-columns: 1fr;
    height: auto;
    min-height: 0;
    max-height: none;
    gap: 18px;
    padding: 18px;
  }

  .hero-copy {
    min-height: auto;
    overflow: visible;
    padding: clamp(24px, 7vw, 42px);
  }

  h1 {
    max-width: 100%;
    font-size: clamp(3.4rem, 13vw, 6.6rem);
    line-height: 1.06;
  }

  .profile-zone {
    min-height: auto;
    gap: 14px;
    padding: 18px;
  }

  .profile-card,
  .contribution-card {
    width: min(100%, 640px);
  }

  .post-item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  body {
    overflow-x: hidden;
  }

  .page-shell {
    width: min(100% - 16px, 100%);
    padding-top: 8px;
    padding-bottom: 28px;
  }

  .site-header,
  .site-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .site-header {
    border-radius: 24px;
    gap: 10px;
  }

  .brand {
    justify-content: center;
    font-size: 0.95rem;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
    gap: 4px;
  }

  .site-nav a {
    flex: 1;
    padding: 8px 6px;
    text-align: center;
  }

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

  .hero {
    gap: 12px;
    padding: 10px;
    border-radius: 22px;
  }

  .hero-copy,
  .profile-zone {
    border-radius: 20px;
  }

  .hero-copy {
    padding: 20px 16px;
  }

  .eyebrow {
    font-size: 0.66rem;
    letter-spacing: 0.11em;
  }

  h1 {
    font-size: clamp(3.1rem, 20vw, 4.8rem);
    line-height: 1.02;
    margin-top: 8px;
  }

  .hello-marquee {
    margin: 14px 0 0;
    padding: 8px 0;
  }

  .hello-track {
    gap: 10px;
    animation-duration: 36s;
  }

  .hello-track span {
    gap: 8px;
    padding: 5px 10px;
    font-size: 0.88rem;
  }

  .hero-text {
    margin-top: 14px;
    font-size: 0.96rem;
    line-height: 1.75;
  }

  .hero-actions {
    gap: 8px;
    margin-top: 14px;
  }

  .button {
    flex: 1 1 auto;
    min-height: 42px;
    padding: 0 14px;
  }

  .profile-zone {
    padding: 14px;
  }

  .profile-card {
    gap: 12px;
    padding: 16px;
  }

  .profile-card img {
    width: 72px;
    height: 72px;
    border-radius: 18px;
  }

  .profile-card h2 {
    font-size: 1.7rem;
  }

  .profile-stats {
    grid-template-columns: 1fr 1fr;
  }

  .contribution-card {
    padding: 14px;
  }

  .contribution-frame img {
    min-height: 88px;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .article-reader {
    padding: 20px;
  }
}

@media (max-width: 380px) {
  h1 {
    font-size: clamp(2.75rem, 19vw, 3.6rem);
  }

  .site-nav a {
    font-size: 0.92rem;
  }
}