:root{
  --text-1:#161616;
  --text-2:#2b2b2b;
  --text-3:#4a4a4a;
  --text-4:#6f6f6f;

  --blue-primary:#1e6fff;
  --blue-bright:#2f8bff;
  --blue-deep:#0a4fc4;
  --gold:#ff9d00;
  --gold-light:#ffb733;

  --shadow-blue:0 12px 40px rgba(30,111,255,.14);
  --shadow-blue-hover:0 20px 54px rgba(30,111,255,.25);
  --shadow-gold:0 10px 30px rgba(255,157,0,.32);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:#eaf5ff;
  color:var(--text-3);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.wrap{max-width:1190px;margin:0 auto;padding:0 24px}

/* ============ 通用标题 ============ */
.sec{padding:60px 0;position:relative}
.sec-head{text-align:center;margin-bottom:44px}
.sec-title{
  font-size:clamp(22px,2.8vw,34px);font-weight:900;letter-spacing:1px;
  color:var(--text-1);margin-bottom:14px;
  white-space:nowrap;
}
.sec-title em{font-style:normal;color:#000;font-weight:900}
.sec-sub{
  font-size:clamp(14px,1.5vw,18px);
  color:var(--text-4);
  max-width:1000px;
  margin:0 auto;
  white-space:nowrap;
}
.sec-line{
  width:64px;height:4px;margin:20px auto 0;border-radius:2px;
  background:linear-gradient(90deg,var(--blue-primary),var(--gold));
}

/* ============ 栏目底色 ============ */
.sec-intro{background:linear-gradient(180deg,#f4faff 0%,#eaf5ff 100%)}
.sec-systems{background:linear-gradient(180deg,#eaf5ff 0%,#e2f0ff 100%)}
.sec-advantages{background:#ffffff}
.sec-verify{background:linear-gradient(180deg,#e3f0ff 0%,#d9eaff 100%)}
.sec-coop{background:#ffffff}
.sec-apply{background:linear-gradient(180deg,#dceeff 0%,#eaf5ff 100%)}

/* ============ HERO ============ */
.hero{position:relative;background:#cfe7ff;overflow:hidden}
.hero-banner{position:relative;width:100%;display:block}
.hero-banner img{width:100%;height:auto;display:block}

.info-bar{
  position:absolute;
  left:50%;bottom:0;
  transform:translateX(-50%);
  z-index:20;
  width:min(1100px,calc(100% - 40px));
  background:rgba(10,28,60,.03);
  backdrop-filter:blur(26px) saturate(180%);
  -webkit-backdrop-filter:blur(26px) saturate(180%);
  border:1px solid rgba(255,255,255,.22);
  border-bottom:none;
  border-radius:18px 18px 0 0;
  box-shadow:0 -6px 30px rgba(6,26,60,.1),inset 0 1px 0 rgba(255,255,255,.18);
  display:flex;align-items:stretch;overflow:hidden;
}
.info-bar::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse 60% 130% at 50% 0%,rgba(255,255,255,.06),transparent 70%);
}
.info-item{
  position:relative;flex:1;padding:22px 10px;
  text-align:center;transition:.3s;
}
.info-item + .info-item::before{
  content:"";position:absolute;left:0;top:22%;
  height:56%;width:1px;
  background:linear-gradient(180deg,transparent,rgba(255,255,255,.4),transparent);
}
.info-item:hover{background:rgba(255,255,255,.05)}
.info-num{
  font-size:clamp(24px,3vw,38px);font-weight:900;
  letter-spacing:1px;line-height:1.1;
  background:linear-gradient(180deg,#ffffff 40%,#ffd166 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  filter:drop-shadow(0 2px 12px rgba(255,157,0,.35));
}
.info-num em{
  font-style:normal;font-size:.5em;margin-left:3px;
  letter-spacing:0;color:var(--gold);
  -webkit-text-fill-color:var(--gold);
}
.info-label{
  display:block;margin-top:4px;
  font-size:clamp(11px,1.1vw,14px);
  color:rgba(255,255,255,.95);
  letter-spacing:1.5px;font-weight:600;
  text-shadow:0 1px 6px rgba(0,0,0,.3);
}

/* ============ 引言栏目 ============ */
.intro-box{
  max-width:960px;margin:0 auto;
  padding:38px 46px;border-radius:16px;
  background:#fff;
  border:1px solid rgba(30,111,255,.12);
  border-left:4px solid var(--gold);
  box-shadow:0 10px 36px rgba(30,111,255,.1);
}
.intro-box p{
  font-size:15.5px;color:var(--text-3);
  line-height:2.05;text-align:justify;
}
.intro-box p + p{
  margin-top:20px;padding-top:20px;
  border-top:1px dashed rgba(30,111,255,.18);
}

/* ============ 第二屏：四大系统 ============ */
.tabs{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:12px;margin-bottom:40px;
}
.tab{
  position:relative;padding:14px 10px;
  border-radius:12px;cursor:pointer;
  font-size:15px;font-weight:700;letter-spacing:.5px;
  color:var(--text-3);
  background:rgba(255,255,255,.85);
  border:2px solid rgba(30,111,255,.15);
  transition:.28s;text-align:center;
  box-shadow:0 4px 14px rgba(30,111,255,.06);
  touch-action:manipulation;
  -webkit-tap-highlight-color:transparent;
  user-select:none;
  -webkit-user-select:none;
}
.tab:hover{
  color:var(--blue-primary);
  border-color:rgba(30,111,255,.4);
  background:#fff;transform:translateY(-2px);
}
.tab.active{
  color:#fff;border-color:transparent;
  background:linear-gradient(135deg,var(--blue-bright),var(--blue-primary));
  box-shadow:0 10px 28px rgba(30,111,255,.4);
}
.panel{display:none;animation:fadeUp .5s ease}
.panel.active{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}

.sys-head{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:18px}
.sys-name{font-size:clamp(20px,2.4vw,28px);font-weight:900;letter-spacing:1px;color:var(--text-2)}
.sys-tag{
  font-size:13px;padding:6px 18px;border-radius:999px;
  letter-spacing:.5px;color:#fff;font-weight:700;
  background:linear-gradient(135deg,var(--gold-light),var(--gold));
  box-shadow:0 6px 18px rgba(255,157,0,.3);
}
.sys-desc{
  font-size:15px;color:var(--text-3);
  margin-bottom:30px;line-height:1.95;
}

/* 系统图片轮播：每页固定 4 列 2 排，共 8 张 */
.system-carousel{position:relative;display:grid;grid-template-columns:38px minmax(0,1fr) 38px;align-items:center;gap:10px;min-height:250px}
.carousel-viewport{min-width:0;overflow:hidden}
.carousel-track{display:flex;transition:transform .45s ease}
.carousel-slide{flex:0 0 100%;min-width:100%;padding:4px 0 2px;opacity:1!important;transform:none!important}
.img-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px 16px}
.carousel-arrow{width:38px;height:38px;border:0;border-radius:50%;background:var(--blue);color:#fff;font-size:30px;line-height:1;cursor:pointer;box-shadow:0 8px 18px rgba(30,111,255,.22);transition:.2s;z-index:2}
.carousel-arrow:hover{background:#1557d6;transform:scale(1.06)}
.carousel-dots{position:absolute;left:50%;bottom:-30px;display:flex;gap:8px;transform:translateX(-50%)}
.carousel-dot{width:8px;height:8px;padding:0;border:0;border-radius:50%;background:#b8cbea;cursor:pointer;transition:.2s}
.carousel-dot.active{width:24px;border-radius:8px;background:var(--blue)}
.img-grid + .img-grid{margin-top:20px}

.carousel-slide .img-item{opacity:1!important;transform:none!important}

.img-item{
  display:flex;
  flex-direction:column;
  gap:8px;
}

.img-ph{
  position:relative;aspect-ratio:16/10;border-radius:12px;
  overflow:hidden;
  background:linear-gradient(135deg,#e5f2ff,#c9e4ff 60%,#f4faff);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:0 8px 26px rgba(30,111,255,.12);
  display:flex;align-items:center;justify-content:center;
  transition:.32s;cursor:pointer;
}
.img-ph::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(30,111,255,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(30,111,255,.07) 1px,transparent 1px);
  background-size:26px 26px;opacity:.8;
}
.img-ph::after{
  content:"";position:absolute;top:-50%;left:-50%;
  width:200%;height:200%;
  background:linear-gradient(45deg,transparent 40%,rgba(255,255,255,.5) 50%,transparent 60%);
  transform:translateX(-100%);transition:.6s;
}
.img-item:hover .img-ph::after{transform:translateX(100%)}
.img-item:hover .img-ph{
  transform:translateY(-6px);
  box-shadow:0 18px 44px rgba(30,111,255,.28);
  border-color:rgba(255,157,0,.4);
}
.img-caption{
  font-size:13px;
  color:var(--text-3);
  text-align:center;
  font-weight:600;
  line-height:1.5;
  padding:0 4px;
}

/* ============ 第三屏：教学优势 ============ */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.adv-card{
  position:relative;padding:30px 26px;border-radius:16px;
  background:linear-gradient(180deg,#ffffff,#f4faff);
  border:1px solid rgba(30,111,255,.1);
  box-shadow:0 8px 30px rgba(30,111,255,.1);
  transition:.3s;overflow:hidden;
}
.adv-card::before{
  content:"";position:absolute;left:0;top:0;
  width:100%;height:4px;
  background:linear-gradient(90deg,var(--blue-primary),var(--gold));
  transform:scaleX(0);transform-origin:left;transition:.4s;
}
.adv-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-blue-hover);
  border-color:rgba(255,157,0,.3);
}
.adv-card:hover::before{transform:scaleX(1)}
.adv-ico{
  width:56px;height:56px;border-radius:15px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(30,111,255,.12),rgba(0,194,255,.08));
  border:1.5px solid rgba(30,111,255,.2);
  margin-bottom:16px;transition:.3s;
}
.adv-card:hover .adv-ico{
  background:linear-gradient(135deg,var(--blue-primary),var(--blue-bright));
  border-color:transparent;
  box-shadow:0 8px 22px rgba(30,111,255,.35);
}
.adv-ico svg{
  width:26px;height:26px;stroke:var(--blue-primary);
  fill:none;stroke-width:1.9;
  stroke-linecap:round;stroke-linejoin:round;
  transition:.3s;
}
.adv-card:hover .adv-ico svg{stroke:#fff}
.adv-title{font-size:17px;font-weight:800;letter-spacing:.3px;margin-bottom:10px;color:var(--text-2)}
.adv-text{font-size:14px;color:var(--text-3);line-height:1.85}

/* ============ 第四屏：真实场景验证 ============ */
.verify-tabs{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:12px;margin-bottom:36px;
}
.vtab{
  padding:13px 10px;border-radius:999px;
  cursor:pointer;font-size:15px;font-weight:700;
  letter-spacing:.5px;color:var(--text-3);
  background:rgba(255,255,255,.85);
  border:2px solid rgba(30,111,255,.15);
  transition:.28s;text-align:center;
  box-shadow:0 4px 14px rgba(30,111,255,.06);
  touch-action:manipulation;
  -webkit-tap-highlight-color:transparent;
  user-select:none;
  -webkit-user-select:none;
}
.vtab:hover{
  color:var(--blue-primary);
  border-color:rgba(30,111,255,.4);
  background:#fff;transform:translateY(-2px);
}
.vtab.active{
  color:#fff;border-color:transparent;
  background:linear-gradient(135deg,var(--gold-light),var(--gold));
  box-shadow:var(--shadow-gold);
}
.vpanel{display:none;animation:fadeUp .5s ease}
.vpanel.active{display:block}
.vintro{
  font-size:15px;color:var(--text-3);line-height:1.95;
  margin:0 0 30px;text-align:left;
  padding:22px 30px;border-radius:14px;
  background:#fff;
  border:1px solid rgba(30,111,255,.12);
  border-left:4px solid var(--gold);
  box-shadow:0 8px 26px rgba(30,111,255,.08);
}
/* 验证区图片占位（保留内部span） */
.vimg-ph{
  position:relative;
  border-radius:12px;
  overflow:hidden;
  background:linear-gradient(135deg,#e5f2ff,#c9e4ff 60%,#f4faff);
  box-shadow:0 8px 26px rgba(30,111,255,.12);
  display:flex;align-items:center;justify-content:center;
  transition:.32s;cursor:pointer;
}
.vimg-ph::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(30,111,255,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(30,111,255,.07) 1px,transparent 1px);
  background-size:26px 26px;opacity:.8;
}
.vimg-ph::after{
  content:"";position:absolute;top:-50%;left:-50%;
  width:200%;height:200%;
  background:linear-gradient(45deg,transparent 40%,rgba(255,255,255,.5) 50%,transparent 60%);
  transform:translateX(-100%);transition:.6s;
}
.vimg-ph:hover::after{transform:translateX(100%)}
.vimg-ph span{
  position:relative;z-index:2;font-size:13px;
  color:var(--text-3);letter-spacing:.5px;
  text-align:center;padding:0 10px;font-weight:600;
}
.vimg-ph:hover{
  transform:translateY(-6px);
  box-shadow:0 18px 44px rgba(30,111,255,.28);
  border-color:rgba(255,157,0,.4);
}
.vimg-item{
  display:flex;flex-direction:column;gap:8px;
}
.vimg-caption{
  font-size:13px;
  color:var(--text-3);
  text-align:center;
  font-weight:600;
  line-height:1.5;
  padding:0 4px;
}

/* ============ 第五屏：合作支持 ============ */
.coop-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.coop-card{
  position:relative;padding:40px 28px;border-radius:18px;
  text-align:center;
  background:linear-gradient(180deg,#ffffff,#f4faff);
  border:1px solid rgba(30,111,255,.12);
  box-shadow:0 10px 36px rgba(30,111,255,.12);
  transition:.32s;overflow:hidden;
}
.coop-card::before{
  content:"";position:absolute;top:0;left:50%;
  transform:translateX(-50%);
  width:75%;height:4px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
  border-radius:0 0 4px 4px;
}
.coop-card:hover{
  transform:translateY(-8px);
  box-shadow:0 24px 60px rgba(30,111,255,.24);
  border-color:rgba(255,157,0,.4);
}
.coop-ico{
  width:76px;height:76px;margin:0 auto 22px;
  border-radius:22px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--blue-primary),var(--blue-bright));
  box-shadow:0 10px 28px rgba(30,111,255,.35);
  transition:.3s;
}
.coop-card:hover .coop-ico{
  background:linear-gradient(135deg,var(--gold-light),var(--gold));
  box-shadow:0 12px 32px rgba(255,157,0,.4);
  transform:scale(1.06);
}
.coop-ico svg{
  width:36px;height:36px;stroke:#fff;
  fill:none;stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round;
}
.coop-title{font-size:19px;font-weight:900;letter-spacing:.5px;margin-bottom:14px;color:var(--text-2)}
.coop-title::after{
  content:"";display:block;
  width:36px;height:3px;margin:12px auto 0;
  border-radius:2px;
  background:linear-gradient(90deg,var(--blue-primary),var(--gold));
}
.coop-text{font-size:14px;color:var(--text-3);line-height:1.9;text-align:left}

/* ============ 第六屏：活动详情 ============ */
.detail-box{
  max-width:960px;margin:0 auto;
  border-radius:18px;overflow:hidden;
  border:1px solid rgba(30,111,255,.14);
  background:#fff;
  box-shadow:0 14px 46px rgba(30,111,255,.14);
}
.detail-row{display:flex;border-bottom:1px solid rgba(30,111,255,.08)}
.detail-row:last-child{border-bottom:none}
.detail-k{
  flex:0 0 190px;padding:16px 26px;
  font-size:14px;font-weight:800;letter-spacing:1px;
  color:var(--text-2);
  background:linear-gradient(90deg,rgba(30,111,255,.06),rgba(30,111,255,.02));
}
.detail-v{flex:1;padding:16px 26px;font-size:14.5px;color:var(--text-3)}
.detail-v strong{color:var(--text-1);font-weight:900;font-size:15.5px}

/* 二维码区 */
.qrcode-section{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:28px;
  max-width:960px;
  margin:34px auto 0;
  padding:28px 36px;
  border-radius:18px;
  background:linear-gradient(135deg,#ffffff,#f4faff);
  border:1px solid rgba(30,111,255,.12);
  box-shadow:0 10px 36px rgba(30,111,255,.1);
}
.qrcode-img{
  flex:0 0 auto;
  width:170px;
  height:170px;
  border-radius:14px;
  background:
    repeating-linear-gradient(45deg,rgba(30,111,255,.06) 0 6px,transparent 6px 12px),
    linear-gradient(135deg,#eaf5ff,#d4ebff);
  border:2px dashed rgba(30,111,255,.4);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:6px;
  color:var(--blue-primary);
  font-size:13px;
  letter-spacing:1px;
  font-weight:700;
}
.qrcode-img svg{
  width:44px;height:44px;
  stroke:var(--blue-primary);
  fill:none;stroke-width:1.8;
  stroke-linecap:round;stroke-linejoin:round;
}
.qrcode-text{
  flex:1 1 320px;
  min-width:260px;
}
.qrcode-text h3{
  font-size:19px;
  font-weight:900;
  color:var(--text-1);
  letter-spacing:.5px;
  margin-bottom:10px;
}
.qrcode-text h3 em{
  font-style:normal;
  color:var(--gold);
}
.qrcode-text p{
  font-size:14px;
  color:var(--text-3);
  line-height:1.9;
}

.detail-cta{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;margin-top:34px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:16px 44px;border-radius:12px;
  font-size:16px;font-weight:800;letter-spacing:.5px;
  cursor:pointer;transition:.28s;border:none;
}
.btn-main{
  color:#fff;
  background:linear-gradient(135deg,var(--gold-light),var(--gold));
  box-shadow:0 12px 34px rgba(255,157,0,.42);
}
.btn-main:hover{transform:translateY(-3px);box-shadow:0 18px 46px rgba(255,157,0,.55)}
.btn-ghost{
  color:var(--blue-primary);background:#fff;
  border:2px solid rgba(30,111,255,.3);
  box-shadow:0 8px 24px rgba(30,111,255,.1);
}
.btn-ghost:hover{
  background:var(--blue-primary);color:#fff;
  border-color:var(--blue-primary);
  transform:translateY(-3px);
  box-shadow:0 14px 36px rgba(30,111,255,.35);
}

/* ============ Footer ============ */
footer{
  padding:48px 0 36px;
  border-top:1px solid rgba(30,111,255,.12);
  background:linear-gradient(180deg,#eaf5ff,rgba(255,255,255,.6));
  text-align:center;
}
.seo-text{
  font-size:12.5px;color:var(--text-4);
  line-height:2;max-width:1000px;margin:0 auto 22px;
}
.foot-info{font-size:14px;color:var(--text-3);letter-spacing:1px;line-height:2}
.foot-info b{color:var(--text-2);font-weight:800}

/* ============================================================
   平板适配
   ============================================================ */
@media (max-width:1024px){
  .sec{padding:48px 0}
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .img-grid{grid-template-columns:repeat(2,1fr)}
  .coop-grid{grid-template-columns:1fr;gap:18px}
}

/* ============================================================
   移动端适配（768px 以下）
   ============================================================ */
@media (max-width:768px){
  .wrap{padding:0 16px}
  .sec{padding:36px 0}
  .sec-title,.sec-sub{white-space:normal}
  .sec-title{font-size:20px;line-height:1.35}
  .sec-sub{font-size:13px;line-height:1.6}
  .sec-head{margin-bottom:30px}
  .sec-line{width:48px;height:3px;margin-top:16px}

  .hero{padding-bottom:0}
  .hero-banner{max-height:62vw;overflow:hidden}
  .hero-banner img{width:100%;height:100%;object-fit:cover;object-position:center}

  .info-bar{
    position:relative;left:auto;bottom:auto;
    transform:none;
    width:calc(100% - 28px);
    margin:-26px auto 0;
    display:grid;
    grid-template-columns:1fr 1fr;
    background:linear-gradient(135deg,#0a3d8f 0%,#1a5fc7 100%);
    backdrop-filter:none;
    -webkit-backdrop-filter:none;
    border:1px solid rgba(255,255,255,.22);
    border-radius:18px;
    box-shadow:0 16px 40px rgba(10,61,143,.35),0 4px 14px rgba(0,0,0,.12);
    overflow:hidden;
    z-index:5;
  }
  .info-bar::before{display:none}
  .info-item{
    padding:16px 8px;
    border-right:1px solid rgba(255,255,255,.18);
    border-bottom:1px solid rgba(255,255,255,.18);
  }
  .info-item:nth-child(2),
  .info-item:nth-child(4){border-right:none}
  .info-item:nth-child(3),
  .info-item:nth-child(4){border-bottom:none}
  .info-item + .info-item::before{display:none}
  .info-item:hover{background:rgba(255,255,255,.06)}
  .info-num{
    font-size:26px;
    background:none;
    -webkit-text-fill-color:#fff;
    color:#fff;
    filter:drop-shadow(0 2px 8px rgba(0,0,0,.2));
  }
  .info-num em{
    color:#ffd166;
    -webkit-text-fill-color:#ffd166;
    margin-left:2px;
  }
  .info-label{
    font-size:12px;
    color:#ffffff;
    letter-spacing:1.5px;
    font-weight:700;
    text-shadow:0 1px 6px rgba(0,0,0,.3);
  }

  .intro-box{padding:22px 20px;border-radius:12px}
  .intro-box p{font-size:14px;line-height:1.9}
  .intro-box p + p{margin-top:14px;padding-top:14px}

  .tabs{
    display:flex;flex-wrap:nowrap;overflow-x:auto;
    gap:8px;margin-bottom:26px;padding-bottom:6px;
    scrollbar-width:none;-ms-overflow-style:none;
    -webkit-overflow-scrolling:touch;touch-action:pan-x;
  }
  .tabs::-webkit-scrollbar{display:none}
  .tab{
    flex:0 0 auto;padding:10px 16px;
    font-size:13px;font-weight:700;white-space:nowrap;
    border-radius:999px;letter-spacing:0;
  }

  .sys-head{gap:8px;margin-bottom:12px}
  .sys-name{font-size:18px;letter-spacing:.5px}
  .sys-tag{font-size:12px;padding:5px 12px;letter-spacing:0}
  .sys-desc{font-size:14px;line-height:1.85;margin-bottom:22px}

  .img-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .img-grid + .img-grid{margin-top:12px}
  .img-caption{font-size:12px;line-height:1.4;padding:0 2px}
  .vimg-caption{font-size:12px;line-height:1.4;padding:0 2px}

  .adv-grid{grid-template-columns:1fr;gap:12px}
  .adv-card{padding:22px 20px;border-radius:14px}
  .adv-ico{width:46px;height:46px;border-radius:12px;margin-bottom:12px}
  .adv-ico svg{width:22px;height:22px}
  .adv-title{font-size:15.5px;margin-bottom:8px}
  .adv-text{font-size:13px;line-height:1.8}

  .verify-tabs{
    display:flex;flex-wrap:nowrap;overflow-x:auto;
    gap:8px;margin-bottom:24px;padding-bottom:6px;
    scrollbar-width:none;-ms-overflow-style:none;
    -webkit-overflow-scrolling:touch;touch-action:pan-x;
  }
  .verify-tabs::-webkit-scrollbar{display:none}
  .vtab{
    flex:0 0 auto;padding:9px 18px;
    font-size:13px;font-weight:700;white-space:nowrap;letter-spacing:0;
  }

  .vintro{
    font-size:13.5px;line-height:1.85;
    padding:18px 20px;border-radius:12px;margin-bottom:22px;
  }

  .coop-card{padding:28px 20px;border-radius:14px}
  .coop-ico{width:62px;height:62px;border-radius:18px;margin-bottom:16px}
  .coop-ico svg{width:30px;height:30px}
  .coop-title{font-size:17px;margin-bottom:12px}
  .coop-text{font-size:13px;line-height:1.85}

  .detail-box{border-radius:14px}
  .detail-row{flex-direction:column}
  .detail-k{
    flex:none;padding:12px 18px;
    font-size:13px;font-weight:800;
    border-bottom:1px solid rgba(30,111,255,.08);
  }
  .detail-v{padding:12px 18px;font-size:13.5px}
  .detail-v strong{font-size:14px}

  .qrcode-section{
    flex-direction:column;padding:24px 20px;gap:18px;
    margin-top:22px;border-radius:14px;
  }
  .qrcode-img{width:150px;height:150px}
  .qrcode-img svg{width:38px;height:38px}
  .qrcode-text{flex:none;min-width:0;text-align:center}
  .qrcode-text h3{font-size:16px;margin-bottom:8px}
  .qrcode-text p{font-size:13px;line-height:1.8}

  .detail-cta{flex-direction:column;gap:10px;margin-top:22px}
  .btn{width:100%;padding:14px 20px;font-size:15px;border-radius:10px}

  footer{padding:32px 0 28px}
  .seo-text{font-size:12px;line-height:1.9;margin-bottom:16px}
  .foot-info{font-size:13.5px;line-height:2}
}

/* ============================================================
   小屏优化
   ============================================================ */
@media (max-width:480px){
  .wrap{padding:0 14px}
  .sec{padding:30px 0}
  .sec-title{font-size:18px}
  .sec-sub{font-size:12.5px}

  .hero-banner{max-height:58vw}
  .info-bar{width:calc(100% - 22px);margin-top:-22px}
  .info-item{padding:14px 6px}
  .info-num{font-size:23px}
  .info-label{font-size:11px;letter-spacing:1px}

  .intro-box{padding:18px 16px}
  .intro-box p{font-size:13.5px}

  .tab{font-size:12.5px;padding:9px 14px}
  .vtab{font-size:12.5px;padding:8px 16px}

  .sys-name{font-size:17px}
  .sys-tag{font-size:11px;padding:4px 10px}
  .sys-desc{font-size:13px}

  .img-caption{font-size:11.5px}
  .vimg-caption{font-size:11.5px}

  .adv-card{padding:20px 16px}
  .adv-title{font-size:15px}
  .adv-text{font-size:12.5px}

  .coop-card{padding:24px 18px}
  .coop-title{font-size:16px}
  .coop-text{font-size:12.5px}

  .qrcode-img{width:130px;height:130px}
  .qrcode-text h3{font-size:15px}
  .qrcode-text p{font-size:12.5px}

  .btn{font-size:14px;padding:13px 16px}
}