/* Desktop at normal widths keeps the existing stylesheet and layout. */
.view-strip,
.view-footer-switch,
.mobile-nav-toggle {
  display: none;
}

html[data-site-view="desktop"] body {
  min-width: 1280px;
}

html[data-compact-screen="true"] .view-strip {
  display: block;
  border-bottom: 1px solid rgba(157, 205, 181, .28);
  background: #10232b;
  color: #d4eddc;
}

.view-strip-inner {
  width: calc(100% - 32px);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
  gap: calc(8px * var(--view-ui-scale, 1));
  padding-block: calc(8px * var(--view-ui-scale, 1));
  font-size: calc(12px * var(--view-ui-scale, 1));
  line-height: 1.6;
}

.view-mode-toggle,
.mobile-nav-toggle {
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid rgba(157, 205, 181, .5);
  border-radius: 6px;
  background: rgba(22, 29, 42, .92);
  color: #eef3ff;
  font: 700 14px / 1.5 "Zen Kaku Gothic New", system-ui, sans-serif;
  white-space: nowrap;
  cursor: pointer;
}

.view-mode-toggle {
  flex: none;
  min-height: calc(44px * var(--view-ui-scale, 1));
  padding: calc(8px * var(--view-ui-scale, 1)) calc(12px * var(--view-ui-scale, 1));
  font-size: calc(14px * var(--view-ui-scale, 1));
}

.view-mode-toggle:focus-visible,
.mobile-nav-toggle:focus-visible {
  outline: 2px solid #a4fff0;
  outline-offset: 3px;
}

html[data-compact-screen="true"] .view-footer-switch {
  display: block;
  margin: 16px;
  text-align: center;
}

@media (max-width: 980px) {
  html:not([data-site-view="desktop"]) {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
  }

  html:not([data-site-view="desktop"]) body.site-glow .container {
    width: calc(100% - 32px);
  }

  html:not([data-site-view="desktop"]) body.site-glow :is(.card, .download-panel, .pv-card, .activity-card, .staff-card, .contact-card > div, .qa-item, .devlog-article, .zip-card) {
    min-width: 0;
  }

  /* Reflow desktop hard breaks; keep paragraph breaks and original text. */
  html:not([data-site-view="desktop"]) .prose-line-break {
    white-space: normal;
  }
}

@media (max-width: 620px) {
  html:not([data-site-view="desktop"]) body.site-glow .header-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    width: calc(100% - 32px);
    gap: 8px 12px;
    padding: 8px 0;
  }

  html:not([data-site-view="desktop"]) body.site-glow .site-title {
    display: block !important;
    font-size: 16px;
    white-space: nowrap;
  }

  html:not([data-site-view="desktop"]) .mobile-nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
  }

  html:not([data-site-view="desktop"]) body.site-glow .site-nav {
    grid-column: 1 / -1;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: minmax(44px, auto);
    gap: 6px 8px;
    padding-bottom: 4px;
  }

  html:not([data-site-view="desktop"])[data-mobile-nav-ready="true"] body.site-glow .site-nav[data-mobile-open="false"] {
    display: none;
  }

  html:not([data-site-view="desktop"]) body.site-glow .site-nav a:nth-child(n) {
    grid-column: auto !important;
    grid-row: auto !important;
    min-height: 44px;
    padding: 8px 4px;
    font-size: 14px;
    line-height: 1.5;
    white-space: normal;
  }

  html:not([data-site-view="desktop"]) body.site-glow .section {
    padding-block: 40px;
  }

  html:not([data-site-view="desktop"]) main#top {
    scroll-margin-top: 76px;
  }

  html:not([data-site-view="desktop"]) body.site-glow .section-head {
    margin-bottom: 24px;
  }

  html:not([data-site-view="desktop"]) body.site-glow .section-head h2 {
    max-width: calc(100% - 50px);
    font-size: clamp(23px, 6.3vw, 30px);
    line-height: 1.5;
    text-wrap: balance;
    overflow-wrap: normal;
    word-break: normal;
    line-break: strict;
  }

  html:not([data-site-view="desktop"]) body.site-glow .lead {
    font-size: 16px;
    line-height: 1.9;
    text-wrap: pretty;
  }

  html:not([data-site-view="desktop"]) body.site-glow .hero-buttons {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  html:not([data-site-view="desktop"]) body.site-glow .hero-buttons .button {
    min-width: 0;
    padding: 12px 6px;
    font-size: 14px;
    line-height: 1.5;
  }

  html:not([data-site-view="desktop"]) body.detail-polish .quick-info {
    max-width: 100%;
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    scroll-margin-top: 84px;
  }

  html:not([data-site-view="desktop"]) body.detail-polish .quick-info > .quick-info-card {
    padding: 18px 12px;
  }

  html:not([data-site-view="desktop"]) body.detail-polish .quick-tool-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px 10px;
    width: 100%;
  }

  html:not([data-site-view="desktop"]) body.detail-polish .quick-tool-list li {
    font-size: 14px;
    white-space: normal;
  }

  html:not([data-site-view="desktop"]) body.site-glow :is(.card, .pv-card, .activity-card, .staff-card, .qa-item, .devlog-article, .download-panel) {
    padding: 20px;
  }

  html:not([data-site-view="desktop"]) body.detail-polish .main-ai-notice {
    padding: 16px;
  }

  html:not([data-site-view="desktop"]) body.detail-polish .main-ai-notice h2 {
    font-size: 16px;
    text-align: center;
  }

  html:not([data-site-view="desktop"]) body.detail-polish .main-ai-notice p {
    font-size: 15px;
    line-height: 1.9;
  }

  html:not([data-site-view="desktop"]) body.detail-polish .main-ai-notice .survey-invite {
    text-align: center;
  }

  html:not([data-site-view="desktop"]) body.site-glow .download-action {
    align-items: center;
    text-align: center;
  }

  html:not([data-site-view="desktop"]) body.site-glow .download-action .button {
    max-width: 100%;
    min-width: 0;
    width: min(100%, 300px);
  }

  html:not([data-site-view="desktop"]) body.site-glow .devlog-head {
    display: grid;
    gap: 6px;
  }

  html:not([data-site-view="desktop"]) body.site-glow .devlog-head h2 {
    font-size: 20px;
    line-height: 1.6;
    text-wrap: balance;
  }

  html:not([data-site-view="desktop"]) body.site-glow :is(.devlog-text, .qa-answer) {
    font-size: 16px;
    line-height: 2;
    line-break: strict;
  }

  html:not([data-site-view="desktop"]) body.site-glow .qa-question {
    font-size: 17px;
    gap: 10px;
  }

  html:not([data-site-view="desktop"]) body.detail-polish :is(.main-ai-notice, #update-history, [data-news-record]) {
    scroll-margin-top: 84px;
  }

  html:not([data-site-view="desktop"]) .welcome-gate {
    align-items: start;
    padding: 16px;
  }

  html:not([data-site-view="desktop"]) .welcome-card {
    margin-block: auto;
    padding: 24px 20px;
  }
}