@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700&family=Open+Sans:wght@400;600&display=swap');

  .amvapes-about-module {
    width: 100%;
    max-width: 860px;
    margin: 0 auto;
    font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
    box-sizing: border-box;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -webkit-touch-callout: none;

    background-color: #1e1e1e;
    border-radius: 20px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 4px 10px rgba(0, 0, 0, 0.2);
    padding: 2rem;
    border: 1px solid rgba(229, 193, 94, 0.15);
    position: relative;
    overflow: hidden; /* 让粒子不溢出圆角 */
  }

  .amvapes-about-module * {
    box-sizing: border-box;
    user-select: inherit;
    -webkit-user-select: inherit;
    -moz-user-select: inherit;
    -ms-user-select: inherit;
    -webkit-touch-callout: inherit;
  }

  @media (min-width: 900px) {
    .amvapes-about-module {
      background-color: transparent;
      border: none;
      box-shadow: none;
      padding: 0;
      border-radius: 0;
      overflow: visible; /* 桌面端允许粒子溢出 */
    }
    .amvapes-about-module .particles-bg {
      display: none; /* 桌面端可不显示粒子（或保留，按需） */
    }
  }

  /* ---------- 粒子背景层 (放在卡片内部) ---------- */
  .particles-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    opacity: 0.5; /* 比原版更明显 */
  }

  .particles-layer {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: #E5C15E;
    opacity: 0.4;
    animation: floatParticle 18s linear infinite;
    box-shadow: 
      50px 30px 0 rgba(229,193,94,0.5),
      110px 80px 0 rgba(229,193,94,0.4),
      190px 20px 0 rgba(229,193,94,0.35),
      260px 110px 0 rgba(229,193,94,0.45),
      330px 40px 0 rgba(229,193,94,0.3),
      410px 90px 0 rgba(229,193,94,0.5),
      490px 60px 0 rgba(229,193,94,0.4),
      570px 120px 0 rgba(229,193,94,0.35),
      650px 50px 0 rgba(229,193,94,0.45),
      730px 100px 0 rgba(229,193,94,0.3),
      20px 140px 0 rgba(229,193,94,0.4),
      130px 170px 0 rgba(229,193,94,0.35),
      250px 200px 0 rgba(229,193,94,0.45),
      370px 150px 0 rgba(229,193,94,0.3),
      480px 210px 0 rgba(229,193,94,0.5),
      600px 180px 0 rgba(229,193,94,0.4),
      720px 160px 0 rgba(229,193,94,0.35),
      840px 220px 0 rgba(229,193,94,0.45);
  }

  .particles-layer:nth-child(2) {
    animation-duration: 26s;
    animation-direction: reverse;
    opacity: 0.35;
    box-shadow: 
      30px 50px 0 rgba(229,193,94,0.4),
      140px 40px 0 rgba(229,193,94,0.35),
      260px 130px 0 rgba(229,193,94,0.5),
      380px 70px 0 rgba(229,193,94,0.3),
      500px 170px 0 rgba(229,193,94,0.45),
      630px 100px 0 rgba(229,193,94,0.4),
      750px 30px 0 rgba(229,193,94,0.35),
      870px 190px 0 rgba(229,193,94,0.5),
      10px 210px 0 rgba(229,193,94,0.4),
      110px 240px 0 rgba(229,193,94,0.45),
      230px 180px 0 rgba(229,193,94,0.3),
      350px 260px 0 rgba(229,193,94,0.4),
      470px 230px 0 rgba(229,193,94,0.5),
      590px 290px 0 rgba(229,193,94,0.35),
      710px 200px 0 rgba(229,193,94,0.4),
      830px 270px 0 rgba(229,193,94,0.45);
  }

  .particles-layer:nth-child(3) {
    animation-duration: 34s;
    opacity: 0.3;
    box-shadow: 
      25px 70px 0 rgba(229,193,94,0.3),
      145px 130px 0 rgba(229,193,94,0.45),
      265px 40px 0 rgba(229,193,94,0.4),
      385px 180px 0 rgba(229,193,94,0.5),
      505px 90px 0 rgba(229,193,94,0.3),
      625px 200px 0 rgba(229,193,94,0.4),
      745px 150px 0 rgba(229,193,94,0.35),
      865px 60px 0 rgba(229,193,94,0.45),
      55px 220px 0 rgba(229,193,94,0.4),
      175px 280px 0 rgba(229,193,94,0.3),
      295px 250px 0 rgba(229,193,94,0.5),
      415px 170px 0 rgba(229,193,94,0.35),
      535px 300px 0 rgba(229,193,94,0.4),
      655px 240px 0 rgba(229,193,94,0.45),
      775px 190px 0 rgba(229,193,94,0.3),
      895px 260px 0 rgba(229,193,94,0.4);
  }

  @keyframes floatParticle {
    0% { transform: translate(0, 0); }
    25% { transform: translate(30px, -20px); }
    50% { transform: translate(-15px, 25px); }
    75% { transform: translate(20px, 15px); }
    100% { transform: translate(0, 0); }
  }

  /* 内容层需要提高 z-index 盖住粒子 */
  .amvapes-about-module .intro,
  .amvapes-about-module .expanded-content,
  .amvapes-about-module .toggle-btn,
  .amvapes-about-module .amvapes-watermark {
    position: relative;
    z-index: 2;
  }

  /* 标题使用 Montserrat */
  .amvapes-about-module h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.9rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: #FFFFFF;
    margin: 0 0 0.5rem 0;
    line-height: 1.2;
    display: inline-block;
    border-bottom: 3px solid #E5C15E;
    padding-bottom: 0.3rem;
    padding-right: 1rem;
    position: relative;
    z-index: 2;
  }

  .amvapes-about-module p {
    color: #D0D0D0;
    font-size: 1rem;
    font-weight: 400;
    margin: 0 0 1.2rem 0;
  }

  .amvapes-about-module .intro p:last-of-type {
    margin-bottom: 0;
  }

  .amvapes-about-module .expanded-content {
    display: none;
    margin-top: 0.25rem;
    margin-bottom: 1rem;
  }

  .amvapes-about-module .expanded-content p {
    margin-bottom: 1rem;
  }

  .amvapes-about-module .expanded-content p:last-child {
    margin-bottom: 0;
  }

  /* 按钮方形，Montserrat */
  .amvapes-about-module .toggle-btn {
    font-family: 'Montserrat', sans-serif;
    background-color: #31302F;
    border: 1.5px solid #E5C15E;
    color: #FFFFFF;
    font-size: 1rem;
    font-weight: 600;
    padding: 0.7rem 2rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.25s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 0.02em;
    line-height: 1.2;
    margin-top: 0.75rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  }

  .amvapes-about-module .toggle-btn:hover {
    background-color: #4A4A4A;
    border-color: #E5C15E;
    color: #FFFFFF;
    box-shadow: 0 8px 18px rgba(229, 193, 94, 0.25);
    transform: translateY(-1px);
  }

  .amvapes-about-module .toggle-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  }

  .amvapes-about-module .toggle-btn .icon {
    margin-left: 6px;
    font-size: 1.2rem;
    line-height: 1;
  }

  .amvapes-about-module .brand-highlight {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    color: #E5C15E;
  }

  .amvapes-about-module .feature-note {
    position: relative;
    padding-left: 0.5rem;
    border-left: 2px solid #E5C15E;
    color: #FFFFFF;
  }

  /* 网站水印 */
  .amvapes-watermark {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.75rem;
    color: #666666;
    letter-spacing: 0.02em;
    user-select: none;
    -webkit-user-select: none;
  }
  .amvapes-watermark a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
  }
  .amvapes-watermark a:hover {
    color: #E5C15E;
  }

  @media (max-width: 480px) {
    .amvapes-about-module {
      padding: 1.5rem;
    }
    .amvapes-about-module h2 {
      font-size: 1.6rem;
    }
    .amvapes-about-module .toggle-btn {
      width: 100%;
      justify-content: center;
    }
    .amvapes-about-module .intro p:nth-of-type(2) {
      display: none;
    }
    .amvapes-about-module .expanded-content p {
      display: block;
    }
  }