/* ============================================================
   SKAIWALK · Air product page (air.html)
   Extracted from inline <style> on 2026-05-04 to enable
   browser caching across EN/zh-TW versions.
   ============================================================ */

    /* ============================================================
       Skaiwalk Air — product page
       ============================================================ */

    /* ---------- Design + Specs (vertical stack: copy → photo → 4×2 specs) ---------- */
    .design {
      padding: 160px 48px;
    }
    .design__inner {
      max-width: 1240px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    /* Centered copy block above the photo. */
    .design__copy {
      text-align: center;
      max-width: 640px;
    }
    .design__copy .sk-eyebrow {
      display: inline-block;
      margin-bottom: 24px;
    }
    .design__copy h2 {
      font-weight: var(--sk-weight-regular);
      font-size: clamp(28px, 3vw, 40px);
      line-height: 1.1;
      letter-spacing: -0.02em;
      color: var(--sk-fg);
      margin-bottom: 20px;
    }
    .design__copy p {
      color: var(--sk-fg-muted);
      font-weight: var(--sk-weight-light);
      font-size: 18px;
      line-height: 1.6;
      margin: 0;
    }
    /* Centered product photo, drop-shadow integration. */
    .design__photo {
      width: 100%;
      max-width: 480px;
      margin: 64px auto 80px;
      position: relative;
    }
    .design__photo img {
      width: 100%;
      height: auto;
      display: block;
      filter:
        drop-shadow(0 24px 40px rgba(35, 60, 90, 0.22))
        drop-shadow(0 6px 12px rgba(35, 60, 90, 0.14));
    }
    /* Specs — 4 cols × 2 rows. Single divider between the two rows; columns
       are separated by spacing alone (no vertical lines). */
    .design__specs {
      width: 100%;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px 48px;
    }
    .design__spec {
      padding: 0;
    }
    /* One hairline between the two rows (above items 5–8). */
    .design__spec:nth-child(n+5) {
      padding-top: 32px;
      border-top: 1px solid rgba(35, 60, 90, 0.10);
    }

    /* "In the box" — sits as the lede directly under the design h2. */
    .design__inbox {
      margin: 0;
      color: var(--sk-fg-muted);
      font-weight: var(--sk-weight-light);
      font-size: 16px;
      line-height: 1.7;
    }
    .design__inbox-label {
      display: inline-block;
      margin-right: 14px;
      font-size: 11px;
      letter-spacing: 0.22em;
      text-transform: uppercase;
      font-weight: var(--sk-weight-medium);
      color: var(--sk-fg-subtle);
      vertical-align: 1px;
    }
    .design__spec-label {
      font-size: 11px;
      letter-spacing: 0.22em;
      text-transform: uppercase;
      color: var(--sk-fg-subtle);
      font-weight: var(--sk-weight-medium);
      margin-bottom: 6px;
    }
    .design__spec-value {
      font-weight: var(--sk-weight-medium);
      font-size: 18px;
      letter-spacing: -0.01em;
      color: var(--sk-fg);
      line-height: 1.2;
    }
    .design__spec-note {
      font-size: 12px;
      color: var(--sk-fg-muted);
      margin-top: 4px;
      line-height: 1.4;
      min-height: 1em;
    }

    /* ---------- Actions ---------- */
    .actions {
      padding: 160px 48px 120px;
      position: relative;
    }
    .actions__head {
      max-width: 720px;
      margin: 0 auto 72px;
      text-align: center;
    }
    /* Standard section header: small eyebrow → big h2 → optional p lede.
       Same pattern across actions, ui-showcase, ecosystem, design. */
    .actions__head .sk-eyebrow {
      display: inline-block;
      margin-bottom: 20px;
    }
    .actions__head h2 {
      font-weight: var(--sk-weight-regular);
      font-size: clamp(28px, 3vw, 40px);
      line-height: 1.1;
      letter-spacing: -0.02em;
      color: var(--sk-fg);
      margin: 0;
    }

    .actions__demo {
      max-width: 1080px;
      margin: 0 auto 80px;
    }
    .actions__stage {
      aspect-ratio: 1 / 1;
      background: none;
      border: none;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
    }
    .actions__stage .sk-watch { width: 68%; position: relative; z-index: 2; }
    .actions__photo {
      width: 100%;
      height: auto;
      display: block;
      -webkit-mask-image: radial-gradient(ellipse 78% 78% at 50% 50%, #000 55%, transparent 92%);
      mask-image: radial-gradient(ellipse 78% 78% at 50% 50%, #000 55%, transparent 92%);
      filter:
        drop-shadow(0 18px 32px rgba(35, 60, 90, 0.20))
        drop-shadow(0 4px 10px rgba(35, 60, 90, 0.12));
    }

    .actions__list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }
    .action-card {
      display: flex;
      align-items: center;
      gap: 22px;
      padding: 24px 28px;
      border-radius: var(--sk-radius-lg);
      background: var(--sk-glass-bg);
      backdrop-filter: var(--sk-glass-blur);
      -webkit-backdrop-filter: var(--sk-glass-blur);
      border: var(--sk-glass-border);
      box-shadow: var(--sk-glass-shadow);
      transition:
        transform 360ms var(--sk-ease-flow),
        background 360ms var(--sk-ease-flow),
        border-color 360ms var(--sk-ease-flow),
        box-shadow 360ms var(--sk-ease-flow);
      cursor: pointer;
    }
    .action-card:hover {
      background: var(--sk-glass-bg-hover);
      border: var(--sk-glass-border-hover);
      box-shadow: var(--sk-glass-shadow-hover);
      transform: translateY(-2px);
    }
    .action-card__icon {
      width: 56px; height: 56px;
      border-radius: var(--sk-radius-md);
      display: flex; align-items: center; justify-content: center;
      background: var(--sk-accent-soft);
      flex-shrink: 0;
      color: var(--sk-ink-90);
    }
    .action-card__icon svg {
      width: 28px;
      height: 28px;
    }
    .action-card__text { flex: 1; min-width: 0; }
    .action-card__name {
      font-weight: var(--sk-weight-medium);
      font-size: 14px;
      color: var(--sk-fg);
      margin-bottom: 4px;
    }
    .action-card__desc {
      font-size: 14px;
      color: var(--sk-fg-muted);
      line-height: 1.5;
    }

    .actions__note {
      max-width: 580px;
      margin: 0 auto;
      text-align: center;
      padding: 24px;
      border-top: 1px solid var(--sk-hairline);
      font-weight: var(--sk-weight-light);
      font-size: 15px;
      color: var(--sk-fg-muted);
    }
    .actions__note em {
      font-style: normal;
      color: var(--sk-fg);
      font-weight: var(--sk-weight-regular);
    }

    /* ---------- UI showcase ---------- */
    .ui-showcase {
      padding: 160px 48px;
      position: relative;
    }
    .ui-showcase__head {
      max-width: 720px;
      margin: 0 auto 72px;
      text-align: center;
    }
    .ui-showcase__head .sk-eyebrow {
      display: inline-block;
      margin-bottom: 20px;
    }
    .ui-showcase__head h2 {
      font-weight: var(--sk-weight-regular);
      font-size: clamp(28px, 3vw, 40px);
      line-height: 1.1;
      letter-spacing: -0.02em;
      color: var(--sk-fg);
      margin: 0 0 20px;
    }
    .ui-showcase__head p {
      color: var(--sk-fg-muted);
      font-weight: var(--sk-weight-light);
      font-size: 18px;
      line-height: 1.6;
      margin: 0;
    }

    .surfaces {
      max-width: 1200px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: 1fr 1fr 1.1fr;
      gap: 48px;
      align-items: stretch;
    }
    /* Two-column variant — wider, more breathing room when only phone + desktop. */
    .surfaces--two {
      max-width: 1080px;
      grid-template-columns: 1fr 1.3fr;
      gap: 40px;
    }
    .surface {
      border-radius: var(--sk-radius-xl);
      padding: 48px 28px 28px;
      background: var(--sk-glass-bg);
      backdrop-filter: var(--sk-glass-blur);
      -webkit-backdrop-filter: var(--sk-glass-blur);
      border: var(--sk-glass-border);
      box-shadow: var(--sk-glass-shadow);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 24px;
      text-align: center;
      transition:
        background 360ms var(--sk-ease-flow),
        border-color 360ms var(--sk-ease-flow),
        box-shadow 360ms var(--sk-ease-flow);
    }
    .surface:hover {
      background: var(--sk-glass-bg-hover);
      border: var(--sk-glass-border-hover);
      box-shadow: var(--sk-glass-shadow-hover);
    }
    .surface__label {
      font-size: 14px;
      letter-spacing: 0.24em;
      text-transform: uppercase;
      color: var(--sk-fg-muted);
    }
    .surface__name {
      font-weight: var(--sk-weight-medium);
      font-size: 15px;
      color: var(--sk-fg);
      margin-top: -14px;
    }
    .surface__stage {
      flex: 1;
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 20px 0;
    }

    /* ---------- Phone mock — light glass UI matching the site ---------- */
    .phone-mock--light {
      width: 220px;
      aspect-ratio: 9 / 19;
      border-radius: 38px;
      padding: 7px;
      background: linear-gradient(180deg, #E5ECF4 0%, #C2CFDC 100%);
      box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.6),
        0 24px 56px -16px rgba(35,60,90,0.28),
        0 8px 20px -8px rgba(35,60,90,0.18);
      position: relative;
    }
    .phone-mock--light::before { display: none; }
    .phone-mock--light .phone-mock__screen {
      width: 100%; height: 100%;
      border-radius: 32px;
      background: linear-gradient(180deg, #EFF3F8 0%, #DDE4ED 100%);
      position: relative;
      overflow: hidden;
      padding: 24px 16px 16px;
      color: var(--sk-fg);
      font-family: var(--sk-font-sans);
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .phone-mock--light .phone-mock__time {
      font-size: 10px;
      color: var(--sk-fg-muted);
      letter-spacing: 0.18em;
      text-transform: uppercase;
      font-weight: var(--sk-weight-medium);
    }
    .phone-mock--light .phone-mock__greet {
      font-weight: var(--sk-weight-light);
      font-size: 18px;
      letter-spacing: -0.01em;
      line-height: 1.2;
      color: var(--sk-fg);
    }
    .phone-mock--light .phone-mock__greet em {
      font-style: normal;
      font-size: 11px;
      color: var(--sk-fg-muted);
      display: block;
      margin-top: 4px;
      letter-spacing: 0;
    }
    .phone-mock--light .phone-mock__card {
      margin-top: 6px;
      padding: 12px;
      border-radius: 16px;
      background: rgba(255,255,255,0.55);
      backdrop-filter: blur(12px);
      box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.7),
        0 4px 12px -6px rgba(35,60,90,0.10);
      font-size: 10px;
      line-height: 1.4;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .phone-mock--light .phone-mock__row {
      display: flex; align-items: center; gap: 8px;
      color: var(--sk-fg);
    }
    .phone-mock--light .phone-mock__row .dot {
      width: 6px; height: 6px;
      border-radius: 50%;
      background: var(--sk-accent);
      box-shadow: 0 0 6px var(--sk-accent-glow);
    }
    .phone-mock--light .phone-mock__row .dot--soft {
      background: rgba(35,60,90,0.18);
      box-shadow: none;
    }
    .phone-mock--light .phone-mock__row .meta {
      margin-left: auto;
      color: var(--sk-fg-subtle);
      font-size: 9px;
    }
    .phone-mock--light .phone-mock__tabbar {
      position: absolute;
      left: 14px; right: 14px; bottom: 14px;
      padding: 9px 14px;
      border-radius: 22px;
      background: rgba(255,255,255,0.55);
      backdrop-filter: blur(12px);
      box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.7),
        0 4px 12px -6px rgba(35,60,90,0.10);
      display: flex; justify-content: space-between;
    }
    .phone-mock--light .phone-mock__tabbar i {
      width: 14px; height: 14px;
      border-radius: 4px;
      background: rgba(35,60,90,0.18);
    }
    .phone-mock--light .phone-mock__tabbar i.on {
      background: var(--sk-accent);
      box-shadow: 0 0 8px var(--sk-accent-glow);
    }

    /* ---------- Desktop mock — light glass UI matching the site ---------- */
    .desktop-mock--light {
      width: 100%;
      aspect-ratio: 16 / 10;
      border-radius: 18px;
      padding: 8px;
      background: linear-gradient(180deg, #D8E0EA 0%, #C2CFDC 100%);
      box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.55),
        0 24px 56px -16px rgba(35,60,90,0.28),
        0 8px 20px -8px rgba(35,60,90,0.18);
      position: relative;
    }
    .desktop-mock--light .desktop-mock__chrome {
      height: 20px;
      display: flex; align-items: center; gap: 6px;
      padding: 0 8px;
    }
    .desktop-mock--light .desktop-mock__chrome i {
      width: 9px; height: 9px;
      border-radius: 50%;
      background: rgba(35,60,90,0.20);
    }
    .desktop-mock--light .desktop-mock__chrome i:nth-child(1) { background: #E5A091; }
    .desktop-mock--light .desktop-mock__chrome i:nth-child(2) { background: #E5C586; }
    .desktop-mock--light .desktop-mock__chrome i:nth-child(3) { background: #91C99B; }
    .desktop-mock--light .desktop-mock__screen {
      width: 100%;
      height: calc(100% - 20px);
      border-radius: 12px;
      background: linear-gradient(180deg, #EFF3F8 0%, #DDE4ED 100%);
      padding: 14px;
      display: grid;
      grid-template-columns: 90px 1fr;
      gap: 14px;
      overflow: hidden;
    }
    .desktop-mock--light .desktop-mock__side {
      display: flex; flex-direction: column;
      gap: 8px;
      border-right: 1px solid rgba(35,60,90,0.10);
      padding-right: 10px;
    }
    .desktop-mock--light .desktop-mock__side i {
      height: 8px;
      background: rgba(35,60,90,0.12);
      border-radius: 3px;
    }
    .desktop-mock--light .desktop-mock__side i:first-child {
      background: var(--sk-accent);
      opacity: 0.85;
      width: 70%;
    }
    .desktop-mock--light .desktop-mock__main {
      display: flex;
      flex-direction: column;
      gap: 8px;
      color: var(--sk-fg);
    }
    .desktop-mock--light .desktop-mock__title {
      font-weight: var(--sk-weight-medium);
      font-size: 14px;
      letter-spacing: -0.01em;
      color: var(--sk-fg);
    }
    .desktop-mock--light .desktop-mock__sub {
      font-size: 9px;
      color: var(--sk-fg-muted);
      letter-spacing: 0.16em;
      text-transform: uppercase;
      margin-bottom: 6px;
      font-weight: var(--sk-weight-medium);
    }
    .desktop-mock--light .desktop-mock__row {
      display: flex; align-items: center; gap: 8px;
      padding: 7px 10px;
      border-radius: 8px;
      background: rgba(255,255,255,0.55);
      backdrop-filter: blur(8px);
      box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.6),
        0 1px 3px -1px rgba(35,60,90,0.06);
      font-size: 10px;
      color: var(--sk-fg);
    }
    .desktop-mock--light .desktop-mock__row .dot {
      width: 5px; height: 5px;
      border-radius: 50%;
      background: var(--sk-accent);
    }
    .desktop-mock--light .desktop-mock__row .meta {
      margin-left: auto;
      color: var(--sk-fg-subtle);
      font-size: 9px;
    }
    .desktop-mock--light .desktop-mock__row--accent {
      background: rgba(166,211,230,0.32);
      box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.7),
        0 2px 6px -2px rgba(166,211,230,0.40);
    }

    /* ---------- Responsive ---------- */
    @media (max-width: 900px) {
      .design, .actions, .ui-showcase {
        padding: 80px 20px;
      }
      .surfaces { grid-template-columns: 1fr; gap: 20px; }
      .actions__list { grid-template-columns: 1fr; }
      .design__specs { grid-template-columns: repeat(2, 1fr); gap: 24px 32px; }
      .design__spec:nth-child(n+5) { padding-top: 24px; }
      .design__spec:nth-child(n+3) { padding-top: 24px; border-top: 1px solid rgba(35, 60, 90, 0.10); }
      .design__spec:nth-child(-n+2) { padding-top: 0; border-top: none; }
    }