@media (max-width: 1080px) {
  .home-page .problem-layout,
  .home-page .service-layout,
  .home-page .why-layout,
  .home-page .cta-layout {
    grid-template-columns: 1fr;
  }

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

  .home-page .service-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .home-page .process-timeline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    row-gap: 24px;
  }

  .home-page .process-timeline::before {
    display: none;
  }

  .home-page .problem-heading,
  .home-page .service-intro,
  .home-page .why-heading,
  .home-page .cta-copy {
    max-width: 40rem;
  }

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

  .category-grid,
  .trust-signals,
  .screenshots-gallery,
  .gallery-stats,
  .process-cards,
  .site-cards,
  .footer-content {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 820px) {
  .home-page .section {
    padding: 88px 0;
  }

  .home-page .site-logo {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .home-page .site-logo-main {
    font-size: 1.8rem;
  }

  .home-page .site-logo-sub {
    font-size: 0.82rem;
  }

  .home-page .hero-stage {
    display: flex;
    flex-direction: column;
    min-height: auto;
    padding: 18px 0 32px;
  }

  .home-page .hero-grid {
    order: 1;
    grid-template-columns: 1fr;
    min-height: auto;
    gap: 20px;
    padding: 0;
    align-items: start;
  }

  .home-page .hero::before {
    width: 100%;
    opacity: 0.46;
  }

  .home-page .hero-copy {
    max-width: 100%;
    padding: 18px 0 0;
    min-height: 0;
  }

  .home-page .hero-copy::before {
    inset: 0 -18px;
    border-radius: 28px;
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.9) 100%);
  }

  .home-page .hero h1 {
    max-width: 100%;
    font-size: clamp(2.7rem, 7.4vw, 3.95rem);
  }

  .home-page .hero-media {
    order: 2;
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    width: min(100%, 560px);
    height: 340px;
    min-height: 0;
    margin: 10px auto 0;
    overflow: visible;
    background: none;
  }

  .home-page .hero-photo {
    position: relative;
    inset: auto;
    width: 100%;
    height: 100%;
    overflow: hidden;
  }

  .home-page .hero-media::after {
    inset: 18px -10px -14px 18px;
  }

  .home-page .hero-photo::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.58) 0%, rgba(255, 255, 255, 0.12) 24%, rgba(255, 255, 255, 0) 52%),
      linear-gradient(90deg, rgba(255, 255, 255, 0.18) 0%, rgba(255, 255, 255, 0.02) 16%, rgba(255, 255, 255, 0) 32%);
    pointer-events: none;
  }

  .home-page .hero-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 68% 18%;
  }

  .home-page .problem-layout,
  .home-page .service-layout,
  .home-page .why-layout,
  .home-page .cta-layout {
    gap: 32px;
  }

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

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

  .home-page .problem-item,
  .home-page .service-step,
  .home-page .why-point,
  .home-page .process-step {
    padding: 24px 22px 22px;
  }

  .home-page .service-flow,
  .home-page .process-timeline {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .home-page .process-step {
    padding-left: 22px;
  }

  .home-page .process-number {
    margin-bottom: 16px;
  }

  .section,
  .detail-hero,
  .visual-impact-section,
  .detail-visual-impact,
  .detail-section,
  .detail-cta,
  .gallery-grid,
  .gallery-process,
  .gallery-cta,
  .footer {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .header-inner,
  .nav-content {
    min-height: 68px;
  }

  .hero-grid,
  .portfolio-hero-grid,
  .service-grid,
  .why-grid,
  .problem-grid,
  .summary-grid,
  .category-grid,
  .trust-signals,
  .before-after,
  .overview-grid,
  .screenshots-gallery,
  .challenges-grid,
  .tech-features,
  .tech-stack,
  .solution-cards,
  .impact-grid,
  .value-cards,
  .feature-cards,
  .metrics-grid,
  .experience-cards,
  .cost-cards,
  .skills-categories,
  .kpi-cards,
  .gallery-stats,
  .gallery-container,
  .process-cards,
  .site-cards,
  .footer-content {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 72px;
    padding-bottom: 64px;
  }

  .hero h1,
  .portfolio-hero-copy h1 {
    max-width: 100%;
  }

  .hero-lead {
    max-width: 100%;
    font-size: 1.05rem;
  }

  .portfolio-panel-card {
    position: static;
  }

  .portfolio-hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .portfolio-hero-title {
    max-width: 100%;
  }

  .support-scope-section {
    padding-top: 48px;
  }

  .tech-stack-strip {
    padding: 16px 0;
  }

  .tech-stack-inner {
    align-items: flex-start;
    gap: 10px;
    flex-direction: column;
  }

  .tech-stack-list {
    gap: 6px 20px;
  }

  .tech-stack-list li {
    font-size: 0.92rem;
  }

  .tech-stack-strip + .portfolio-support-section {
    padding-top: 32px;
  }

  .portfolio-support-card::before {
    width: 100%;
    opacity: 0.18;
  }

  .portfolio-support-card::after {
    background-size: 24px 24px;
    opacity: 0.72;
  }

  .portfolio-hero::before {
    background-size: 36px 36px;
    opacity: 0.72;
  }

  .portfolio-hero::after {
    background-size:
      100% 100%,
      100% 100%,
      100% 100%,
      100% 100%,
      100% 100%,
      100% 100%,
      100% 100%,
      100% 100%,
      34% 18%,
      28% 18%,
      28% 18%,
      22% 18%,
      24% 18%,
      18% 2px,
      14% 2px,
      11% 2px;
    background-position:
      0 0,
      0 0,
      0 0,
      0 0,
      0 0,
      0 0,
      0 0,
      0 0,
      46% 45%,
      54% 56%,
      62% 18%,
      67% 33%,
      65% 48%,
      48% 54%,
      66% 34%,
      74% 54%;
    opacity: 0.58;
  }

  .portfolio-list-section {
    background-size: 110%;
    background-position: 60% bottom;
  }

  .portfolio-list-section::before {
    background-size: 24px 24px;
    opacity: 0.45;
  }

  .portfolio-list-section::after {
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.93) 0%, rgba(255, 255, 255, 0.84) 100%);
  }

  .preview-card-grid {
    grid-template-columns: 1fr;
  }

  .preview-card-large,
  .preview-card-small {
    min-height: auto;
  }

  .process-item {
    grid-template-columns: 56px minmax(0, 1fr);
  }

  .gallery-item,
  .gallery-item.horizontal,
  .gallery-item.vertical {
    grid-column: auto;
    grid-row: auto;
    min-height: 220px;
  }
}

@media (max-width: 640px) {
  .home-page .section {
    padding: 72px 0;
  }

  .home-page .header-inner,
  .home-page .header-nav {
    align-items: stretch;
  }

  .home-page .header-nav {
    gap: 12px;
  }

  .home-page .header-nav a {
    width: 100%;
  }

  .home-page .hero {
    padding-bottom: 0;
  }

  .home-page .hero-copy {
    padding-top: 14px;
    padding-bottom: 20px;
  }

  .home-page .hero h1 {
    max-width: 100%;
    font-size: 1.82rem;
    line-height: 1.14;
  }

  .home-page .hero-lead {
    font-size: 1rem;
    line-height: 1.8;
  }

  .home-page .hero::before {
    opacity: 0.28;
  }

  .home-page .hero-actions {
    gap: 10px;
    margin-top: 24px;
  }

  .home-page .button,
  .home-page .header-cta {
    min-height: 52px;
    border-radius: 14px;
  }

  .home-page .trust-list {
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 22px;
  }

  .home-page .trust-list li {
    font-size: 0.88rem;
    min-height: 0;
  }

  .home-page .hero-media {
    position: relative;
    width: 100%;
    height: 280px;
    min-height: 0;
    margin-top: 12px;
    overflow: visible;
  }

  .home-page .hero-photo {
    inset: auto;
    position: relative;
    width: 100%;
    overflow: hidden;
  }

  .home-page .hero-copy::before {
    inset: 0 -16px;
  }

  .home-page .hero-photo::after {
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.94) 0%, rgba(255, 255, 255, 0.24) 16%, rgba(255, 255, 255, 0) 34%),
      linear-gradient(90deg, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0.05) 14%, rgba(255, 255, 255, 0) 28%);
  }

  .home-page .hero-photo img {
    position: static;
    width: 100%;
    height: 100%;
  }

  .home-page .problem-grid {
    grid-template-columns: 1fr;
  }

  .home-page .problem-item h3,
  .home-page .service-step h3,
  .home-page .why-point h3,
  .home-page .process-step h3 {
    font-size: 1.22rem;
  }

  .home-page .problem-item,
  .home-page .service-step,
  .home-page .why-point,
  .home-page .process-step {
    padding: 22px 20px;
  }

  .home-page .cta-card {
    padding: 24px 20px;
  }

  .home-page .cta-copy h2 {
    font-size: 2rem;
  }

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

  .container {
    width: min(calc(100% - 32px), var(--container-width));
  }

  .site-header {
    position: static;
  }

  .header-inner,
  .header-nav,
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .header-nav {
    padding-bottom: 16px;
  }

  .nav-content {
    flex-wrap: wrap;
  }

  .nav-menu {
    flex-wrap: wrap;
    gap: 12px;
    width: 100%;
  }

  .hero {
    padding-top: 48px;
    padding-bottom: 40px;
    background-position: left top, center, 68% center;
  }

  .hero-copy {
    padding: 8px 0;
  }

  .hero h1 {
    font-size: 2.5rem;
    line-height: 1.1;
  }

  .hero-lead {
    font-size: 1rem;
    line-height: 1.8;
  }

  .hero-actions {
    gap: 12px;
  }

  .trust-list {
    margin-top: 24px;
  }

  .button,
  .btn,
  .header-cta {
    width: 100%;
    text-align: center;
  }

  .preview-card,
  .preview-support-note {
    padding: 18px;
    border-radius: 16px;
  }

  .support-scope-section {
    padding-top: 40px;
  }

  .portfolio-support-card::before {
    display: none;
  }

  .portfolio-list-section {
    background: linear-gradient(180deg, #FFFFFF 0%, #F5F8FF 100%);
  }

  .portfolio-hero::before {
    background-size: 32px 32px;
    opacity: 0.64;
  }

  .portfolio-hero::after {
    opacity: 0.42;
  }

  .preview-card-small {
    padding: 18px;
  }

  .preview-card h3 {
    font-size: 1.125rem;
  }

  .preview-card p,
  .preview-support-note p {
    font-size: 0.82rem;
  }

  .panel-card,
  .problem-card,
  .service-card,
  .why-card,
  .summary-card,
  .category-card,
  .portfolio-card,
  .process-item,
  .comparison-card,
  .overview-card,
  .challenge-item,
  .tech-feature,
  .tech-category,
  .signal-item,
  .solution-card,
  .impact-item,
  .value-card,
  .feature-card,
  .metric-card,
  .exp-card,
  .cost-card,
  .scale-item,
  .skill-category,
  .process-card,
  .site-card,
  .kpi-card {
    padding: 20px;
  }

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

  .step-number {
    width: 52px;
    height: 52px;
  }

  .detail-title {
    font-size: 2.1rem;
  }

  .detail-meta {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-buttons,
  .gallery-cta .cta-buttons {
    flex-direction: column;
  }

  .gallery-container {
    grid-template-columns: 1fr;
  }

  .gallery-item,
  .gallery-item.horizontal,
  .gallery-item.vertical {
    min-height: 220px;
  }

  .back-to-top {
    right: 16px;
    bottom: 16px;
  }
}

@media (max-width: 1080px) {
  .portfolio-index-page .portfolio-hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .portfolio-index-page .portfolio-hero-title,
  .portfolio-index-page .portfolio-lead,
  .portfolio-index-page .section-heading,
  .portfolio-index-page .problem-heading,
  .portfolio-index-page .service-intro,
  .portfolio-index-page .why-heading,
  .portfolio-index-page .cta-copy {
    max-width: 100%;
  }

  .portfolio-index-page .summary-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .portfolio-index-page .category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .portfolio-index-page .portfolio-hero {
    padding: 18px 0 54px;
  }

  .portfolio-index-page .portfolio-hero::before {
    width: 100%;
    background-size: 40px 40px;
    opacity: 0.46;
  }

  .portfolio-index-page .portfolio-hero::after {
    opacity: 0.4;
  }

  .portfolio-index-page .portfolio-hero-intro {
    padding: 30px 28px;
    border-radius: 28px;
  }

  .portfolio-index-page .portfolio-hero-title {
    font-size: clamp(2.7rem, 7vw, 4rem);
  }

  .portfolio-index-page .hero-portfolio-preview {
    gap: 16px;
  }

  .portfolio-index-page .preview-card-grid,
  .portfolio-index-page .category-grid,
  .portfolio-index-page .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .portfolio-index-page .summary-grid {
    grid-template-columns: 1fr;
  }

  .portfolio-index-page .summary-card,
  .portfolio-index-page .category-card,
  .portfolio-index-page .portfolio-card {
    padding: 24px 22px;
  }

  .portfolio-index-page .preview-card {
    padding: 22px;
  }

  .portfolio-index-page .preview-card-media {
    margin: -22px -22px 14px;
  }

  .portfolio-index-page .preview-card-with-media.preview-card-large .preview-card-media {
    margin-left: -22px;
    margin-right: -22px;
  }

  .portfolio-index-page .portfolio-card-media {
    margin: -24px -22px 8px;
  }

  .portfolio-index-page .portfolio-support-card {
    padding: 28px 26px;
  }

  .portfolio-index-page .portfolio-support-card::before {
    width: 100%;
    opacity: 0.16;
  }

  .portfolio-index-page .portfolio-support-card::after {
    background-size: 24px 24px;
  }

  .portfolio-index-page .tech-stack-strip {
    padding: 16px 0;
  }
}

@media (max-width: 640px) {
  .portfolio-index-page .button,
  .portfolio-index-page .header-cta {
    min-height: 52px;
    border-radius: 14px;
    width: 100%;
  }

  .portfolio-index-page .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .portfolio-index-page .portfolio-hero {
    padding: 8px 0 44px;
  }

  .portfolio-index-page .portfolio-hero::before {
    background-size: 32px 32px;
    opacity: 0.34;
  }

  .portfolio-index-page .portfolio-hero-intro {
    padding: 24px 20px;
    border-radius: 24px;
  }

  .portfolio-index-page .portfolio-hero-title {
    font-size: 2.18rem;
    line-height: 1.12;
  }

  .portfolio-index-page .portfolio-lead {
    gap: 12px;
    font-size: 0.98rem;
    line-height: 1.8;
  }

  .portfolio-index-page .preview-card,
  .portfolio-index-page .summary-card,
  .portfolio-index-page .category-card,
  .portfolio-index-page .portfolio-card,
  .portfolio-index-page .portfolio-support-card {
    padding: 22px 20px;
    border-radius: 22px;
  }

  .portfolio-index-page .preview-card-media {
    margin: -22px -20px 14px;
  }

  .portfolio-index-page .preview-card-with-media.preview-card-large .preview-card-media {
    margin-left: -20px;
    margin-right: -20px;
    aspect-ratio: 16 / 9;
  }

  .portfolio-index-page .preview-card-small {
    padding: 22px 20px;
  }

  .portfolio-index-page .portfolio-card-media {
    margin: -22px -20px 8px;
    aspect-ratio: 16 / 9;
  }

  .portfolio-index-page .preview-card h3,
  .portfolio-index-page .summary-card h3,
  .portfolio-index-page .category-card h3,
  .portfolio-index-page .portfolio-card h3 {
    font-size: 1.12rem;
  }

  .portfolio-index-page .preview-tags span,
  .portfolio-index-page .preview-support-tags span {
    min-height: 28px;
    font-size: 0.76rem;
  }

  .portfolio-index-page .portfolio-list-section {
    background: linear-gradient(180deg, #FFFFFF 0%, #F5F8FF 100%);
  }

  .portfolio-index-page .portfolio-list-section::before {
    background-size: 24px 24px;
    opacity: 0.28;
  }
}