* {
      -webkit-tap-highlight-color: transparent;
      outline: none;
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
      background: #fff;
      color: #2c3e50;
      line-height: 1.6;
      min-height: 100vh;
    }
    a { text-decoration: none; color: inherit; }
    .navbar {
      background: #fff;
      box-shadow: 0 2px 12px rgba(0,0,0,0.06);
      position: fixed;
      top: 0;
      width: 100%;
      z-index: 100;
    }
    .navbar-inner {
      max-width: 1200px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 24px;
      height: 64px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: #1a7f5a;
    }
    .logo img {
      width: 32px;
      height: 32px;
      border-radius: 8px;
      object-fit: cover;
    }
    .nav-links {
      display: flex;
      gap: 32px;
      font-size: 15px;
      color: #555;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s, transform 0.3s;
      transform: translateY(-8px);
    }
    .nav-links a:hover { color: #1a7f5a; }
    .download-btn {
      background: #1a7f5a;
      color: #fff;
      padding: 10px 28px;
      border-radius: 24px;
      font-size: 14px;
      font-weight: 600;
      border: none;
      cursor: pointer;
      transition: background 0.2s;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .download-btn:hover { background: #13694a; }
    .download-btn svg { width: 18px; height: 18px; fill: currentColor; }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 4px;
    }
    .menu-toggle span { display: block; width: 24px; height: 2px; background: #333; border-radius: 2px; margin: 5px 0; }
    @media (max-width: 768px) {
      .nav-links { display: none; opacity: 0; pointer-events: none; }
      .menu-toggle { display: block; }
      .mobile-nav-open .nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        width: 100%;
        background: #fff;
        box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        padding: 20px 24px;
        gap: 20px;
        font-size: 16px;
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
        transition: opacity 0.35s, transform 0.35s;
      }
      .navbar .download-btn { display: none; }
    }
    /* PC端 (≥769px) */
    @media (min-width: 769px) {
      .nav-links { opacity: 1; pointer-events: auto; transform: none; display: flex; }
    }

    .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
    .mobile-download-btn {
      display: none;
      position: fixed;
      bottom: 20px;
      left: 16px;
      right: 16px;
      height: 60px;
      z-index: 200;
      background: rgba(255,255,255,0.5);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-radius: 12px;
      font-size: 18px;
      font-weight: 700;
      color: #1a7f5a;
      border: 1px solid rgba(26,127,90,0.2);
      box-shadow: 0 4px 16px rgba(0,0,0,0.08);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      cursor: pointer;
      transition: background 0.2s;
      text-decoration: none;
    }
    .mobile-download-btn:hover { background: rgba(255,255,255,0.8); }
    .mobile-download-btn svg { width: 24px; height: 24px; fill: currentColor; }

    @media (max-width: 768px) {
      .mobile-download-btn { display: flex; }
      body { padding-bottom: 0; }
      .footer { padding-bottom: 80px; }
    }
    @media (min-width: 769px) {
      .mobile-download-btn { display: none !important; }
    }

    .hero {
      padding: 140px 20px 60px;
      background: linear-gradient(135deg, #f0faf5 0%, #e0f2ec 100%);
    }
    .hero .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 60px;
      flex-wrap: wrap;
    }
    .hero-text {
      flex: 1;
      min-width: 280px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }
    .hero-text .logo-big {
      width: 120px;
      height: 120px;
      border-radius: 12px;
      object-fit: cover;
      box-shadow: 0 8px 24px rgba(26,127,90,0.15);
      margin-bottom: 16px;
    }
    .hero-text .site-name {
      font-size: 2rem;
      font-weight: 800;
      color: #1a7f5a;
      text-align: center;
    }
    .hero-download { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 24px; }
    .hero-download .btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 36px;
      border-radius: 30px;
      font-size: 16px;
      font-weight: 600;
      border: none;
      cursor: pointer;
      transition: all 0.2s;
    }
    .hero-download .btn-primary { background: #1a7f5a; color: #fff; }
    .hero-download .btn-primary:hover { background: #13694a; }
    .hero-download .btn-secondary { background: #fff; color: #1a7f5a; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
    .hero-download .btn-secondary:hover { background: #f5f5f5; }
    .hero-download svg { width: 20px; height: 20px; fill: currentColor; }

    @media (max-width: 768px) {
      .hero-download .btn-primary { display: none; }
      .hero-download .btn-secondary { margin: 0 auto; }
      .hero-text .logo-big { width: 80px; height: 80px; }
      .hero-text .site-name { font-size: 1.5rem; }
    }

    .carousel-section {
      flex: 1;
      min-width: 280px;
      text-align: center;
    }
    .carousel-title {
      font-size: 1.1rem;
      font-weight: 600;
      color: #1a7f5a;
      margin-bottom: 16px;
    }
    .carousel-wrapper {
      position: relative;
      width: 100%;
      max-width: 300px;
      margin: 0 auto;
      overflow: hidden;
      touch-action: pan-y;
    }
    .carousel-track {
      display: flex;
      align-items: center;
      transition: transform 0.4s ease;
    }
    .carousel-slide {
      flex: 0 0 100%;
      display: flex;
      justify-content: center;
      align-items: center;
      transition: transform 0.4s ease, opacity 0.4s ease;
    }
    .carousel-slide img {
      width: 100%;
      height: auto;
      max-height: 60vh;
      object-fit: contain;
      border-radius: 16px;
      box-shadow: 0 8px 24px rgba(26,127,90,0.12);
      transition: transform 0.4s ease, opacity 0.4s ease;
    }
    .carousel-slide.prev img,
    .carousel-slide.next img {
      transform: scale(0.7);
      opacity: 0.5;
    }
    .carousel-slide.active img {
      transform: scale(1);
      opacity: 1;
    }
    .carousel-dots {
      display: flex;
      justify-content: center;
      gap: 8px;
      margin-top: 12px;
    }
    .carousel-dots span {
      width: 8px;
      height: 8px;
      background: #ccc;
      border-radius: 50%;
      cursor: pointer;
      transition: background 0.3s;
    }
    .carousel-dots span.active { background: #1a7f5a; }
    .about { padding: 80px 0; background: #f0faf5; }
    .about .section-title {
      text-align: center;
      font-size: 1.8rem;
      font-weight: 700;
      margin-bottom: 48px;
      color: #222;
    }
    .about-content { max-width: 700px; margin: 0 auto; text-align: center; font-size: 1rem; color: #555; line-height: 1.8; }
    .about-content p { margin-bottom: 16px; }
    .about-content .email { color: #1a7f5a; font-weight: 600; }
    .footer { background: #1a1a2e; color: #ccc; padding: 40px 20px; text-align: center; }
    .footer .social-links { display: flex; justify-content: center; gap: 24px; margin-bottom: 16px; }
    .footer .social-links a { color: #bbb; transition: color 0.2s; }
    .footer .social-links a:hover { color: #1a7f5a; }
    .footer .social-links svg { width: 24px; height: 24px; fill: currentColor; }
    .footer .copyright { font-size: 0.85rem; color: #888; }

    @media (max-width: 640px) {
      .hero { padding: 100px 20px 40px; }
      .hero .container { flex-direction: column; }
    }