@media (max-width: 1040px) {
  .community-main,
  .community-thread-layout {
    grid-template-columns: 1fr;
  }

  .community-sidebar,
  .community-thread-sidebar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }
}

@media (max-width: 900px) {
  .community-topbar,
  .community-hero {
    padding: 24px 22px;
  }

  .community-topbar {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .community-primary-nav {
    justify-content: flex-start;
  }

  .community-topbar-actions {
    flex-wrap: wrap;
  }

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

@media (max-width: 800px) {
  .hero-links {
    right: 18px;
  }

  .hero-brand {
    gap: 14px;
  }

  .hero-brand-slogan {
    width: min(360px, 58vw);
  }

  .product-header {
    flex-direction: column;
    align-items: stretch;
  }

  .official-region-row {
    min-width: 1040px;
  }
}

@media (max-width: 680px) {
  .legal-shell {
    width: min(100% - 18px, 100%);
    padding-top: 18px;
    padding-bottom: 48px;
  }

  .legal-card {
    padding: 22px 18px;
    border-radius: 22px;
  }

  .legal-topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .community-shell,
  .community-shell--thread {
    width: min(100% - 18px, 100%);
    padding-top: 16px;
    padding-bottom: 56px;
    gap: 16px;
  }

  .community-topbar,
  .community-sidebar-card,
  .community-thread-detail-card,
  .community-replies-panel,
  .community-reply-card {
    border-radius: 22px;
  }

  .community-topbar,
  .community-sidebar-card,
  .community-thread-detail-card,
  .community-replies-panel {
    padding-left: 18px;
    padding-right: 18px;
  }

  .community-topbar-actions,
  .community-primary-nav {
    width: 100%;
  }

  .community-auth-slot {
    width: 100%;
    justify-content: stretch;
  }

  .community-user-capsule,
  .community-login-trigger,
  .community-logout-button,
  .community-google-mock-button {
    width: 100%;
    justify-content: center;
  }

  .community-nav-link,
  .community-nav-button,
  .community-compose-trigger,
  .community-compose-form button,
  .community-reply-form button {
    width: 100%;
    justify-content: center;
  }

  .community-user-menu {
    width: 100%;
  }

  .community-user-menu-button {
    margin-left: auto;
  }

  .community-sidebar,
  .community-thread-sidebar {
    grid-template-columns: 1fr;
  }

  .community-list-toolbar {
    padding-left: 12px;
    padding-right: 12px;
  }

  .community-input-row {
    grid-template-columns: 1fr;
  }

  .community-compose-panel-head {
    display: grid;
  }

  .community-compose-modal {
    place-items: end center;
    padding: 12px;
  }

  .community-compose-dialog {
    width: 100%;
    max-height: 92vh;
    border-radius: 22px 22px 0 0;
    padding: 18px;
  }

  .community-compose-dialog .community-compose-form {
    max-height: calc(92vh - 90px);
  }

  .community-compose-notice {
    padding: 16px;
  }

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

  .community-upload-card img {
    width: 100%;
    height: auto;
  }

  .community-thread-avatar {
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 820px) {
  body {
    background:
      linear-gradient(180deg, rgba(255, 252, 246, 0.98) 0%, rgba(255, 246, 230, 0.98) 100%);
  }

  .hero {
    padding: 22px 16px 18px;
    border-bottom: 0;
  }

  .hero-links {
    position: static;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
    gap: 8px;
    margin-bottom: 14px;
  }

  .hero-shortcut {
    justify-content: center;
    gap: 6px;
    min-height: 42px;
    padding: 8px 10px;
    border-radius: 14px;
    box-shadow: 0 10px 22px rgba(186, 126, 23, 0.1);
  }

  .hero-shortcut-icon {
    width: 16px;
    height: 16px;
    flex-basis: 16px;
  }

  .hero-shortcut-label {
    font-size: 0.78rem;
  }

  .hero-brand {
    flex-direction: column;
    gap: 10px;
    margin-bottom: 10px;
  }

  .hero-brand-logo {
    width: 84px;
  }

  .hero-brand-slogan {
    width: min(228px, 72vw);
  }

  .hero-tagline {
    font-size: 0.88rem;
    line-height: 1.5;
  }

  .home-mode-switch {
    gap: 12px;
    margin-top: 14px;
    padding: 0 16px 14px;
  }

  .official-section-kicker {
    gap: 8px;
    font-size: 0.8rem;
    letter-spacing: 0.06em;
  }

  .home-mode-tabs {
    width: 100%;
    min-width: 0;
    gap: 4px;
    padding: 4px;
    border-radius: 18px;
    box-shadow: 0 14px 28px rgba(208, 170, 121, 0.14);
  }

  .home-mode-tab {
    flex: 1 1 0;
    min-width: 0;
    min-height: 44px;
    padding: 10px 12px;
    font-size: 0.9rem;
    border-radius: 14px;
  }

  .home-panel--market,
  .home-panel--official {
    padding: 0 16px 18px;
  }

  .official-browser,
  .official-browser--market {
    gap: 16px;
    padding-bottom: 14px;
  }

  .official-product-tabs,
  .official-product-tabs--market {
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .official-product-tab {
    min-height: 48px;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 16px;
    font-size: 0.86rem;
    box-shadow: 0 12px 24px rgba(208, 170, 121, 0.1);
  }

  .official-product-tab-logo {
    width: 16px;
    height: 16px;
    flex-basis: 16px;
  }

  .feed-toolbar {
    padding: 0 0 12px;
  }

  .feed-toolbar-inner {
    display: grid;
    gap: 10px;
  }

  .feed-filter {
    min-height: 42px;
    border-radius: 14px;
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.82),
      0 8px 18px rgba(186, 126, 23, 0.1);
  }

  .feed-filter--search,
  .feed-filter--price {
    width: 100%;
    min-width: 0;
  }

  .feed-filter--search {
    padding: 0 12px;
  }

  .feed-filter--search input {
    min-height: 40px;
    font-size: 0.9rem;
  }

  .feed-filter--price {
    padding: 8px 12px;
  }

  .price-range-inputs {
    gap: 6px;
  }

  .price-range-inputs input {
    min-height: 30px;
    padding: 5px 6px;
  }

  #products {
    padding-bottom: 18px;
  }

  .product-card {
    margin-bottom: 12px;
    padding: 14px;
    border-radius: 18px;
    box-shadow: 0 12px 24px rgba(186, 126, 23, 0.1);
  }

  .product-info {
    align-items: flex-start;
    gap: 12px;
  }

  .product-logo {
    width: 36px;
    height: 36px;
    flex-basis: 36px;
    padding: 6px;
  }

  .product-copy {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .product-copy h2 {
    font-size: 1.02rem;
  }

  .product-summary {
    font-size: 0.84rem;
    line-height: 1.45;
  }

  .offer {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 12px;
  }

  .offer-copy {
    width: 100%;
    align-items: flex-start;
  }

  .offer-title-row {
    flex-wrap: wrap;
    row-gap: 6px;
  }

  .offer-title {
    width: 100%;
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
    line-height: 1.4;
  }

  .offer-store-name {
    font-size: 0.78rem;
  }

  .status-badge,
  .offer-tag,
  .offer-inline-tag {
    min-height: 24px;
    padding: 0 8px;
    font-size: 0.7rem;
  }

  .platform-price {
    align-self: flex-start;
    margin-left: 0;
    font-size: 0.96rem;
  }

  .official-plan-tabs {
    width: 100%;
    max-width: 100%;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: stretch;
    overflow: visible;
    border-radius: 18px;
  }

  .official-plan-tab {
    min-width: 0;
    min-height: 46px;
    padding: 10px 12px 14px;
    font-size: 0.82rem;
    border-right: 1px solid rgba(219, 191, 152, 0.5);
    border-bottom: 1px solid rgba(219, 191, 152, 0.5);
  }

  .official-plan-tab:nth-child(2n) {
    border-right: 0;
  }

  .official-plan-tab:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .official-plan-tab:only-child {
    grid-column: 1 / -1;
  }

  .official-plan-tab:last-child:nth-child(odd) {
    grid-column: 1 / -1;
    border-right: 0;
  }

  .official-browser-empty--inline {
    grid-column: 1 / -1;
  }

  .official-plan-tab.is-active::after {
    left: 16px;
    right: 16px;
  }

  .official-browser-card {
    width: 100%;
    gap: 14px;
    padding: 14px;
    border-radius: 18px;
  }

  .official-browser-summary {
    align-items: flex-start;
    gap: 8px;
  }

  .official-browser-badge {
    min-height: 22px;
    font-size: 0.82rem;
  }

  .official-browser-summary-text {
    font-size: 0.88rem;
    line-height: 1.45;
  }

  .official-region-table {
    gap: 10px;
    overflow: visible;
  }

  .official-region-row,
  .official-region-row--head {
    min-width: 0;
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 12px;
    border-radius: 16px;
  }

  .official-region-row--head {
    display: none;
  }

  .official-region-rank {
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    width: fit-content;
    min-height: 22px;
    padding: 0 8px;
    border-radius: 999px;
    background: rgba(245, 158, 11, 0.12);
    color: #a16207;
    font-size: 0.72rem;
    font-weight: 800;
  }

  .official-region-country {
    font-size: 0.95rem;
    font-weight: 800;
  }

  .official-region-price,
  .official-region-action {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font-size: 0.84rem;
    text-align: left;
  }

  .official-region-price::before,
  .official-region-action::before {
    color: var(--color-text-secondary);
    font-size: 0.76rem;
    font-weight: 700;
  }

  .official-region-price--original::before {
    content: "原始价格";
  }

  .official-region-price--rate::before {
    content: "汇率";
  }

  .official-region-price--cny::before {
    content: "人民币";
  }

  .official-region-price--cheapness::before {
    content: "比价";
  }

  .official-region-action::before {
    content: "购买";
  }

  .official-region-link {
    margin: 0;
  }

  footer {
    margin-top: 18px;
    padding: 18px 16px 28px;
    font-size: 0.78rem;
  }

  .footer-sponsor-link {
    flex-wrap: wrap;
    row-gap: 2px;
  }

  .source-submit {
    right: 12px;
    bottom: 12px;
  }

  .source-submit-trigger {
    width: 56px;
    height: 56px;
  }

  .source-submit-panel {
    right: 0;
    bottom: 68px;
    width: min(320px, calc(100vw - 24px));
    padding: 16px;
  }

  .source-submit-panel h2 {
    font-size: 1rem;
  }

  .source-submit-form {
    gap: 10px;
  }

  .source-submit-form input,
  .source-submit-form textarea {
    font-size: 0.9rem;
    padding: 10px 12px;
  }
}