:root{
    --blue:#3E8FD0; --blue-soft:#EAF3FB; --pink:#F07FA3; --pink-soft:#FDEDF2;
    --ink:#2B2B33; --sub:#5C5C66; --line:#E8E8EE; --bg:#FFFFFF; --bg-alt:#FAFBFD;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  body{font-family:"Segoe UI",Arial,"Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
  img{max-width:100%;display:block}
  .wrap{max-width:1100px;margin:0 auto;padding:0 20px}
  section{padding:52px 0}
  .sec-title{font-size:26px;font-weight:700;text-align:center;letter-spacing:.5px;margin-bottom:8px}
  .sec-sub{text-align:center;color:var(--sub);font-size:14px;margin-bottom:36px}
  .sec-sub::after{content:"";display:block;width:56px;height:3px;background:linear-gradient(90deg,var(--blue),var(--pink));margin:14px auto 0;border-radius:2px}

  /* ===== 1. HERO 主图横幅（浅雾蓝 + 柔和粉） ===== */
  .hero{background:linear-gradient(135deg,#EAF3FB 0%,#F2F7FD 45%,#FDEDF2 100%);padding:64px 0 58px}
  .hero .kicker{display:inline-block;background:rgba(255,255,255,.75);border:1px solid rgba(62,143,208,.25);color:var(--blue);border-radius:20px;padding:4px 14px;font-size:12px;letter-spacing:1.5px;text-transform:uppercase;font-weight:700;margin-bottom:18px}
  .hero h1{font-size:34px;line-height:1.3;font-weight:800;margin-bottom:14px;color:var(--ink)}
  .hero .tagline{font-size:17px;font-weight:600;color:var(--pink);margin-bottom:12px}
  .hero p{font-size:15px;color:var(--sub);max-width:820px}
  .hero .badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .hero .badge{background:#fff;border:1px solid var(--line);color:var(--ink);border-radius:22px;padding:7px 16px;font-size:13px;font-weight:600}
  .hero .badge.hl{background:var(--blue);border-color:var(--blue);color:#fff}

  /* ===== 2. 产品图集 ===== */
  .gallery{background:var(--bg)}
  .gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
  .gallery-grid figure{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;transition:transform .25s ease,box-shadow .25s ease}
  .gallery-grid figure:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(62,143,208,.12)}
  .gallery-grid img{aspect-ratio:1/1;object-fit:cover;width:100%}
  .gallery-grid figcaption{font-size:13px;color:var(--ink);text-align:center;padding:10px 8px;font-weight:600}
  .gallery-grid figcaption small{display:block;font-size:12px;color:var(--sub);font-weight:400;margin-top:2px}

  /* ===== 3. 故事描述 ===== */
  .story{background:var(--bg-alt)}
  .story-flex{display:flex;gap:40px;align-items:center;max-width:980px;margin:0 auto;flex-wrap:wrap}
  .story-flex .info{flex:1 1 380px}
  .story-flex .side{flex:1 1 340px;border-radius:14px;overflow:hidden;border:1px solid var(--line)}
  .story-flex h2{font-size:24px;margin-bottom:14px;line-height:1.35}
  .story-flex p{font-size:14px;color:var(--sub);margin-bottom:12px}
  .story-flex ul{list-style:none;margin-top:8px}
  .story-flex li{font-size:13px;color:var(--sub);padding:5px 0 5px 24px;position:relative}
  .story-flex li::before{content:"✓";position:absolute;left:0;color:var(--pink);font-weight:700}

  /* ===== 4. 产品特性 ===== */
  .features{background:var(--bg)}
  .feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
  .feat{border:1px solid var(--line);border-radius:14px;padding:26px 20px;background:#fff}
  .feat .ico{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px}
  .feat.blue .ico{background:var(--blue-soft)}
  .feat.pink .ico{background:var(--pink-soft)}
  .feat h3{font-size:16px;margin-bottom:8px}
  .feat p{font-size:13px;color:var(--sub)}

  /* ===== 5. 定制流程 ===== */
  .custom{background:var(--bg-alt)}
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;max-width:1000px;margin:0 auto}
  .step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 20px;text-align:center;position:relative}
  .step .num{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--pink));color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 14px;font-size:16px}
  .step h3{font-size:15px;margin-bottom:8px}
  .step p{font-size:13px;color:var(--sub)}

  /* ===== 6. 适用场景 ===== */
  .scenes{background:var(--bg)}
  .scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
  .scene{border:1px solid var(--line);border-radius:14px;padding:22px 20px;background:#fff}
  .scene h3{font-size:15px;margin-bottom:8px;color:var(--blue)}
  .scene p{font-size:13px;color:var(--sub)}

  /* ===== 7. FAQ ===== */
  .faq{background:var(--bg-alt)}
  .faq-list{max-width:860px;margin:0 auto}
  details{border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:10px;overflow:hidden}
  summary{cursor:pointer;padding:16px 20px;font-size:15px;font-weight:600;list-style:none;position:relative;padding-right:44px}
  summary::-webkit-details-marker{display:none}
  summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:20px;color:var(--pink);font-weight:400}
  details[open] summary::after{content:"–"}
  details[open] summary{background:var(--blue-soft)}
  details .a{padding:4px 20px 18px;font-size:14px;color:var(--sub)}
  details .a strong{color:var(--ink)}

  /* ===== 8. CTA ===== */
  .cta{background:linear-gradient(135deg,#3E8FD0,#F07FA3);color:#fff;text-align:center;padding:56px 20px}
  .cta h2{font-size:26px;margin-bottom:12px}
  .cta p{color:rgba(255,255,255,.92);font-size:14px;max-width:700px;margin:0 auto}

  @media(max-width:820px){
    .gallery-grid,.feat-grid,.scene-grid{grid-template-columns:repeat(2,1fr)}
    .steps{grid-template-columns:repeat(2,1fr)}
    .hero h1{font-size:26px}
  }
  @media(max-width:560px){
    .gallery-grid,.feat-grid,.scene-grid,.steps{grid-template-columns:1fr}
    .sec-title{font-size:21px}
  }