:root {
    --black: #0a0a0a;
    --dark: #1a1a1a;
    --charcoal: #2d2d2d;
    --gray: #6b6b6b;
    --light-gray: #9a9a9a;
    --bg: #fafafa;
    --off-white: #f5f5f5;
    --border: #e5e5e5;
    --accent: #c9a962;
    --accent-dark: #b89852;
    --white: #ffffff;
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
    font-weight: 400;
    font-size: 17px;
    color: var(--dark);
    line-height: 1.47;
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.022em;
  }
  h1, h2, h3, h4 {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
    font-weight: 600;
    letter-spacing: -0.022em;
    color: var(--black);
  }
  a { text-decoration: none; color: inherit; }

  @media (max-width: 768px) {
  }

  /* Hero */
  .hero {
    padding: 80px 40px 80px;
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
  }
  @media (max-width: 900px) {
    .hero { grid-template-columns: 1fr; gap: 48px; padding: 120px 24px 60px; }
  }
  .hero-image {
    position: relative;
    aspect-ratio: 4/5;
    background: var(--off-white);
    overflow: hidden;
    border-radius: 16px;
  }
  .hero-carousel {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    border-radius: 16px;
    touch-action: pan-y;  /* 修改：新增，仅允许垂直滚动交给浏览器，水平手势留给JS轮播，保证系统左右滑动返回手势不受干扰 */
  }
  .hero-carousel-track {
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }
  .hero-carousel-track img {
    min-width: 100%;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .hero-carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    transition: background 0.3s, transform 0.3s;
    opacity: 0;
  }
  .hero-image:hover .hero-carousel-btn { opacity: 1; }
  .hero-carousel-btn:hover {
    background: var(--white);
    transform: translateY(-50%) scale(1.1);
  }
  .hero-carousel-btn.prev { left: 16px; }
  .hero-carousel-btn.next { right: 16px; }
  .hero-carousel-btn svg {
    width: 18px;
    height: 18px;
    stroke: var(--black);
    stroke-width: 2;
    fill: none;
  }
  .hero-carousel-dots {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 2;
  }
  .hero-carousel-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    border: none;
    cursor: pointer;
    transition: all 0.3s;
  }
  .hero-carousel-dot.active {
    background: var(--accent);  /* 修改：激活圆点由白色改为金色高亮，与outdoor lineup圆点状态统一 */
    width: 24px;
    border-radius: 4px;
  }
  .hero-content { max-width: 480px; }
  .hero-breadcrumb {
    font-size: 20px;
    letter-spacing: 0.08em;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 16px;
  }
  .hero-breadcrumb a:hover { color: var(--charcoal); }
  .hero-breadcrumb span { margin: 0 10px; }
  .hero h1 {
    font-size: 3rem;
    line-height: 1.1;
    margin-bottom: 16px;
    font-weight: 600;
  }
  .hero-subtitle {
    font-size: 17px;
    color: var(--gray);
    margin-bottom: 32px;
    font-weight: 400;
    line-height: 1.47;
  }
  .hero-price {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: 32px;
    color: var(--black);
  }
  .hero-price .original {
    font-size: 1rem;
    color: var(--light-gray);
    text-decoration: line-through;
    margin-left: 12px;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  }
  .btn {
    display: inline-block;
    padding: 12px 32px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: -0.01em;
    border: none;
    cursor: pointer;
    border-radius: 999px;
    transition: background 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                color 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                box-shadow 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.3s ease;
  }
  .btn-primary {
    background: var(--white);
    color: var(--accent);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    animation: btnPulse 3s ease-in-out infinite;
  }
  .btn-primary:hover {
    background: var(--accent);
    color: var(--black);
    box-shadow: 0 6px 24px rgba(201, 169, 98, 0.35);
    transform: translateY(-2px);
    animation: none;
  }
  .btn-outline {
    background: transparent;
    color: var(--black);
    border: 1px solid var(--black);
  }
  .btn-outline:hover {
    background: var(--black);
    color: var(--white);
    transform: translateY(-2px);
  }
  @keyframes btnPulse {
    0%, 100% { box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08); }
    50% { box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12); }
  }
  .btn-group { display: flex; gap: 16px; flex-wrap: wrap; }

  .hero-features {
    margin-top: 48px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
  }
  @media (max-width: 768px) {
    .hero-features { grid-template-columns: 1fr; gap: 16px; }
  }
  .hero-feature {
    text-align: center;
  }
  .hero-feature .val {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 4px;
    line-height: 1.2;
  }
  .hero-feature .lbl {
    font-size: 12px;
    letter-spacing: -0.01em;
    color: var(--light-gray);
    font-weight: 400;
  }
  .hero-feature .sub {
    font-size: 13px;
    color: var(--gray);
    margin-top: 2px;
    font-weight: 400;
  }

  /* Section */
  .section {
    max-width: 1280px;
    margin: 0 auto;
    padding: 120px 40px;
  }
  @media (max-width: 768px) {
    .section { padding: 80px 24px; }
  }
  .section-header {
    text-align: center;
    margin-bottom: 64px;
  }
  .section-label {
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 16px;
    font-weight: 600;
  }
  .section h2 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 16px;
  }
  .section-desc {
    font-size: 15px;
    color: var(--gray);
    max-width: 560px;
    margin: 0 auto;
    font-weight: 400;
    line-height: 1.47;
  }

  /* Features */
  .features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
  }
  @media (max-width: 768px) {
    .features-grid { grid-template-columns: 1fr; }
  }
  .feature-item {
    padding: 48px 40px;
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    text-align: center;
    transition: background 0.3s;
  }
  .feature-item:nth-child(3n) { border-right: none; }
  .feature-item:nth-last-child(-n+3) { border-bottom: none; }
  @media (max-width: 768px) {
    .feature-item { border-right: none; border-bottom: 1px solid var(--border); }
    .feature-item:last-child { border-bottom: none; }
  }
  .feature-item:hover { background: var(--bg); }
  .feature-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--charcoal);
    transition: color 0.3s ease;
  }
  .feature-icon svg,
  .feature-icon img {
    width: 100%;
    height: 100%;
    stroke: currentColor;
    stroke-width: 1.5;
    fill: none;
    transition: color 0.3s ease;
  }
  .feature-item:hover .feature-icon {
    color: var(--accent-dark);
  }
  .feature-item h3 {
    font-size: 21px;
    font-weight: 600;
    margin-bottom: 10px;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
    letter-spacing: -0.022em;
  }
  .feature-item p {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.47;
    font-weight: 400;
  }

  /* Scene gallery — single column large images */
  .scene-gallery {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
  }
  .scene-gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 16px;
    background: var(--off-white);
    margin-bottom: 16px;
    aspect-ratio: 16/9;
  }
  @media (max-width: 768px) {
    .scene-gallery { padding: 0 24px; }
  }
  .scene-gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
  }
  .scene-gallery-item:hover img {
    transform: scale(1.02);
  }
  .scene-gallery-item .caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px 24px;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 100%);
    color: var(--white);
    font-size: 12px;
    letter-spacing: -0.01em;
    font-weight: 400;
  }

  /* Video section */
  .video-section {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
  }
  .video-wrapper {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    background: #000;
    aspect-ratio: 16/9;
  }
  .video-wrapper video,
  .video-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
  }
  .video-placeholder {
    position: relative;
    cursor: pointer;
  }
  .video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(20px);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    transition: transform 0.3s, background 0.3s;
  }
  .video-play-btn:hover {
    transform: translate(-50%, -50%) scale(1.1);
    background: var(--white);
  }
  .video-play-btn svg {
    width: 28px;
    height: 28px;
    fill: var(--black);
    margin-left: 4px;
  }
  .video-caption {
    text-align: center;
    font-size: 12px;
    letter-spacing: -0.01em;
    color: var(--light-gray);
    margin-top: 20px;
  }

  /* Modes */
  .modes-section {
    background: var(--bg);
  }
  .modes-grid {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }
  @media (max-width: 768px) {
    .modes-grid { grid-template-columns: 1fr; padding: 0 24px; }
  }
  .mode-card {
    background: var(--white);
    padding: 48px 36px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
  }
  .mode-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.06);
  }
  .mode-number {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
    font-size: 3rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 20px;
  }
  .mode-card h3 {
    font-size: 21px;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: -0.022em;
  }
  .mode-card p {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.47;
    font-weight: 400;
  }

  /* Specs */
  .specs-wrapper {
    max-width: 800px;
    margin: 0 auto;
  }
  .spec-group { margin-bottom: 40px; }
  .spec-group-title {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
    font-size: 21px;
    font-weight: 600;
    color: var(--black);
    padding-bottom: 12px;
    border-bottom: 1px solid var(--black);
    margin-bottom: 16px;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
  }
  .spec-group-title .cat-icon { font-size: 1rem; opacity: 0.6; }
  .spec-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 15px;
  }
  .spec-row .label { color: var(--gray); font-weight: 400; }
  .spec-row .value { color: var(--dark); font-weight: 400; }

  /* CTA */
  .cta-section {
    background: var(--off-white);
    color: var(--dark);
    text-align: center;
    padding: 120px 40px 80px;
  }
  .cta-section h2 {
    color: var(--black);
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 16px;
  }
  .cta-section p {
    font-size: 15px;
    color: var(--gray);
    margin-bottom: 40px;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
    line-height: 1.47;
  }
  .cta-section .btn-primary {
    background: var(--white);
    color: var(--accent);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  }
  .cta-section .btn-primary:hover {
    background: var(--accent);
    color: var(--black);
    box-shadow: 0 6px 24px rgba(201, 169, 98, 0.35);
  }

  /* Support strip — Apple style light gray */
  .support-strip {
    background: var(--off-white);
    padding: 40px 40px 40px;
    border-top: 1px solid var(--border);
  }
  .support-inner {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
  }
  .support-link {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    letter-spacing: -0.01em;
    color: var(--gray);
    transition: color 0.3s;
  }
  .support-link:hover { color: var(--black); }
  .support-link .icon { font-size: 1rem; }

  @media (max-width: 768px) {
  }
  
/* ===== MOBILE RESPONSIVE ===== */
  @media (max-width: 768px) {
    .hero {
      flex-direction: column;
      padding: 80px 20px 24px;  /* 修改：顶部padding从24px加大到80px，避开固定页眉(48px)遮挡轮播图片 */
      padding: calc(80px + env(safe-area-inset-top, 0px)) 20px 24px;  /* 修改：新增，iPhone刘海屏时顶部再叠加安全区高度，防止导航增高后重新遮挡 */
    }
    .hero-image, .hero-content {
      width: 100%;
      max-width: 100%;
    }
    .hero-image { margin-bottom: 32px; }
    .hero-content h1 { font-size: 1.75rem; }
    .hero-subtitle { font-size: 0.9rem; }
    .hero-price { font-size: 1.5rem; }
    .hero-features {
      flex-direction: column;
      gap: 24px;
    }
    .hero-feature { width: 100%; text-align: center; }
    
    .section { padding: 60px 20px; }
    .section-header h2 { font-size: 1.5rem; }
    .section-desc { font-size: 0.85rem; }
    
    .features-grid {
      grid-template-columns: 1fr;
      gap: 32px;
    }
    
    .modes-grid {
      grid-template-columns: 1fr;
      gap: 16px;
      padding: 0 20px;
    }
    .mode-card { padding: 32px 24px; }
    
    .scene-gallery, .video-section { padding: 0 20px; }
    
    .specs-wrapper { grid-template-columns: 1fr; }
    
    .cta-section { padding: 60px 20px 48px; }
    .cta-section h2 { font-size: 1.5rem; }
    
    .support-inner {
      gap: 20px;
      flex-direction: column;
      align-items: center;
    }
    
  }
  
  @media (max-width: 480px) {
    .hero-content h1 { font-size: 1.5rem; }
    .hero-price { font-size: 1.25rem; }
    .section-header h2 { font-size: 1.3rem; }
  }