/* ==================== 中等屏幕 ==================== */
@media (max-width: 1024px) {
  .prologue-layout {
    grid-template-columns: 1fr;
  }
  .prologue-left {
    min-height: 48vh;
    padding-top: 48px;
  }
  .prologue-right {
    min-height: auto;
    padding: 28px 20px 40px;
  }
  .notice-board { columns: 2; }
  .poem-masonry { columns: 2; }
}

/* ==================== 平板 / 手机：侧栏 → 底部标签 ==================== */
@media (max-width: 1023px) {
  :root { --sidebar-w: 0; }

  html, body { overflow: hidden; }
  body { flex-direction: column; }

  .ink-sidebar { display: none; }

  .ink-main {
    margin-left: 0;
    height: calc(100vh - 52px);
    height: calc(100dvh - 52px);
    width: 100%;
  }

  .mobile-tabs {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(52px + env(safe-area-inset-bottom, 0px));
    padding-bottom: env(safe-area-inset-bottom, 0px);
    background: var(--bg-section);
    border-top: 1px solid var(--border-ink);
    z-index: 200;
    align-items: stretch;
  }

  .theme-toggle-btn {
    top: 14px;
    right: 14px;
    width: 38px;
    height: 38px;
  }

  .prologue-layout {
    grid-template-columns: 1fr;
  }

  .prologue-left {
    min-height: auto;
    padding: 56px 16px 36px;
  }

  .prologue-content {
    padding: 20px 12px;
    max-width: 100%;
  }

  .hero-title {
    font-size: 28px;
    letter-spacing: 0.08em;
  }
  .hero-motd {
    max-width: 100%;
    font-size: 14px;
  }

  .server-switch-tabs {
    flex-wrap: wrap;
    gap: 8px;
  }
  .ink-srv-btn {
    padding: 6px 14px;
    font-size: 14px;
  }

  .prologue-right {
    padding: 24px 16px 32px;
    gap: 16px;
  }

  .prologue-status-head { gap: 10px; }
  .seal-stamp { font-size: 13px; padding: 4px 12px; }

  .server-instance .server-card__grid {
    grid-template-columns: 1fr;
  }

  .ink-gallery-card {
    height: 180px;
    min-height: 160px;
  }

  .chapter-inner {
    padding: 32px 16px 88px;
  }

  .chapter-title {
    font-size: 22px;
    margin-bottom: 28px;
  }

  .scroll-gallery {
    overflow-x: auto;
    overflow-y: visible;
    padding-bottom: 8px;
  }
  .scroll-track {
    display: flex;
    gap: 16px;
    width: max-content;
    padding: 0 2px;
  }
  .scroll-frame {
    width: 220px;
    flex-shrink: 0;
  }
  .scroll-img-wrap img { height: 160px; }

  .notice-board { columns: 1; }
  .poem-masonry { columns: 1; }

  .community-tabs { gap: 0; }
  .community-tab {
    font-size: 17px;
    padding: 10px 20px;
    letter-spacing: 0.1em;
  }

  .letter-paper { padding: 20px; }
  .letter-row {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .letter-label {
    text-align: left;
    min-width: auto;
  }
  .letter-row--actions {
    flex-direction: row;
    justify-content: flex-end;
  }

  .article-scroll-paper {
    max-height: min(78vh, 620px);
    margin: 0 6px;
  }
  .article-scroll-header {
    padding: 32px 40px 10px 20px;
  }
  .modal-scroll.article-scroll-body {
    padding: 6px 18px 22px 22px;
  }
  .seal-close {
    width: 36px;
    height: 36px;
    font-size: 15px;
    top: 10px;
    right: 10px;
  }
}

/* ==================== 小屏手机 ==================== */
@media (max-width: 480px) {
  .hero-title { font-size: 24px; }
  .seal-stamp { font-size: 12px; padding: 4px 10px; }

  .community-tab {
    font-size: 15px;
    padding: 10px 14px;
  }

  .chapter-inner {
    padding: 24px 12px 88px;
  }

  .scroll-frame { width: 180px; }
  .scroll-img-wrap img { height: 140px; }

  .letter-paper { padding: 16px; }

  .hero-download-area { margin-top: 20px; }
  .download-btn {
    padding: 9px 18px;
    font-size: 13px;
  }

  .server-instance .server-card__head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

/* ==================== 宽屏 (21:9 等) ==================== */
@media (min-width: 1600px) {
  .chapter-inner { max-width: 1280px; }
  .prologue-layout {
    grid-template-columns: minmax(0, 1fr) minmax(420px, 1.5fr);
  }
}