.sj-banner{height:clamp(240px,38vw,500px);
  background:#ecf0f1 url(https://img3.tnscdn.com/Public/static/images/home/lang/other/wangdian_en.jpg) center top no-repeat;
  background-size:cover}

/* ------------------------------------------------------------
   标题文字(沿用 default 文案,红下划线装饰取品牌色)
   ------------------------------------------------------------ */
.sj-title{max-width:860px;margin:0 auto;padding:34px 16px 6px;text-align:center}
.sj-title h2{font-size:clamp(19px,2.4vw,28px);color:var(--ink);line-height:1.45;font-weight:700;
  position:relative;display:inline-block;padding-bottom:16px;margin:0}
.sj-title h2::after{content:"";position:absolute;left:50%;bottom:0;margin-left:-28px;
  width:56px;height:4px;background:var(--brand)}
.sj-title p{margin:16px 0 0;color:var(--muted);font-size:clamp(14px,1.6vw,18px)}

/* ------------------------------------------------------------
   区块标题(眉标+标题)
   ------------------------------------------------------------ */
.sj-sec-head{max-width:640px;margin:0 auto 30px}
.sj-eyebrow{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.14em;
  text-transform:uppercase;color:var(--brand);margin-bottom:10px}
.sj-sec-head h2{font-size:clamp(22px,3vw,32px);margin-bottom:8px}

/* ------------------------------------------------------------
   销售平台(后端 list 循环)
   ------------------------------------------------------------ */
.sj-platforms{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:16px}
.sj-platform{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:20px 12px;display:flex;flex-direction:column;align-items:center;gap:12px;transition:.25s}
.sj-platform:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:transparent}
.sj-platform img{width:52px;height:52px;object-fit:contain;border-radius:8px;background:var(--bg-soft)}
.sj-platform span{font-size:13.5px;font-weight:600;color:var(--ink)}

/* ------------------------------------------------------------
   行业痛点(4卡)
   ------------------------------------------------------------ */
.sj-challenges{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.sj-challenge{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 20px;text-align:center;transition:.25s;position:relative;overflow:hidden}
.sj-challenge::after{content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:.3s}
.sj-challenge:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.sj-challenge:hover::after{transform:scaleX(1)}
.sj-challenge-ico{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;
  font-size:22px;color:#fff;margin:0 auto 15px;background:linear-gradient(135deg,#0d1b2a,#334e68)}
.sj-challenge h5{font-size:15px;font-weight:700;color:var(--ink);margin:0 0 8px;line-height:1.4}
.sj-challenge p{font-size:13px;color:var(--muted);margin:0;line-height:1.6}

/* ------------------------------------------------------------
   平台优势(3卡)
   ------------------------------------------------------------ */
.sj-advantages{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sj-advantage{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;transition:.25s}
.sj-advantage:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.sj-advantage-ico{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;
  font-size:23px;color:#fff;margin-bottom:15px}
.dbg-1{background:linear-gradient(135deg,#b91f42,#e35c78)}
.dbg-2{background:linear-gradient(135deg,#2e6cf6,#7dd3fc)}
.dbg-3{background:linear-gradient(135deg,#0f766e,#2dd4bf)}
.sj-advantage h3{font-size:17px;margin:0 0 8px}
.sj-advantage p{font-size:13.5px;color:var(--body);margin:0;line-height:1.65}

/* ------------------------------------------------------------
   入驻流程(4步横排,桌面端步间箭头)
   ------------------------------------------------------------ */
.sj-steps{display:grid;grid-template-columns:repeat(7,auto);gap:12px;align-items:stretch;justify-content:center}
.sj-step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px 18px;text-align:center;width:210px;transition:.25s}
.sj-step:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.sj-step-n{position:absolute;top:14px;right:14px;width:26px;height:26px;border-radius:8px;
  background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;
  font-size:12.5px;font-weight:800}
.sj-step-ico{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;
  font-size:22px;color:#fff;margin:0 auto 14px;background:linear-gradient(135deg,var(--brand),#e35c78);
  box-shadow:0 10px 22px rgba(185,31,66,.28)}
.sj-step h5{font-size:15px;font-weight:700;color:var(--ink);margin:0 0 7px}
.sj-step p{font-size:12.5px;color:var(--muted);margin:0;line-height:1.55}
.sj-step-arrow{display:grid;place-items:center;color:var(--brand);font-size:18px;opacity:.55}

/* ------------------------------------------------------------
   RESPONSIVE (断点对齐 991/575)
   ------------------------------------------------------------ */
@media(max-width:991px){
  .sj-challenges{grid-template-columns:repeat(2,1fr)}
  .sj-advantages{grid-template-columns:repeat(2,1fr)}
  /* 流程改2列,箭头隐藏 */
  .sj-steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .sj-step{width:auto}
  .sj-step-arrow{display:none}
}
@media(max-width:575px){
  .sj-platforms{grid-template-columns:repeat(3,1fr);gap:10px}
  .sj-platform{padding:14px 8px}
  .sj-platform img{width:42px;height:42px}
  .sj-platform span{font-size:12px}
  .sj-challenges,.sj-advantages{grid-template-columns:1fr}
  .sj-steps{grid-template-columns:1fr}
  .sj-title{padding-top:26px}
}

.sj-join{background:url(https://img3.tnscdn.com/Public/static/images/home/new_index/center3.png) center no-repeat;
  background-size:cover;min-height:300px;display:flex;align-items:center;justify-content:center;
  text-align:center;padding:48px 20px}
.sj-join p{color:#fff;font-size:clamp(20px,2.8vw,30px);font-weight:700;line-height:1.45;
  max-width:820px;margin:0;text-shadow:0 2px 10px rgba(0,0,0,.25)}