/* ============================================================
   Transfer - lazy.css (non-critical, loaded async)
   Below-the-fold promo carousel: features / steps / reviews + dots.
   Its responsive rules live here too (no selector overlap with
   core.css), so async load order cannot override mobile layout.
   ============================================================ */
/* ---------- PROMO CAROUSEL ---------- */
.promo{margin-top:10px;}
.promo-inner{position:relative;}
.carousel{position:relative;height:310px;}
.slide{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;padding-top:8px;gap:22px;
  opacity:0;transform:translateY(18px) scale(.99);pointer-events:none;
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
.slide.is-active{opacity:1;transform:none;pointer-events:auto;}

/* per-layer heading */
.layer-head{text-align:center;min-height:62px;display:flex;flex-direction:column;justify-content:center;}
.layer-title{
  font-family:var(--font-sans);font-size:26px;font-weight:700;color:var(--ink);
  background:linear-gradient(120deg,var(--primary),var(--teal));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.layer-cards{display:flex;gap:22px;align-items:stretch;justify-content:center;flex-wrap:wrap;}
.slide-reviews .layer-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;flex-wrap:initial;margin-top:25px;}

/* features */
.feat-card{
  flex:1;max-width:300px;min-width:210px;background:var(--feat-card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius);padding:20.5px 24px;box-shadow:var(--shadow-sm);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.feat-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);}
.feat-ic{
  display:inline-flex;width:54px;height:54px;border-radius:16px;align-items:center;justify-content:center;margin-bottom:16px;
  color:#fff;transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.feat-card:hover .feat-ic{transform:translateY(-3px) scale(1.04);}
.ic-blue{background:var(--grad-primary);box-shadow:0 12px 24px rgb(var(--rgb-primary)/.28);}
.ic-teal{background:var(--grad-teal);box-shadow:0 12px 24px rgb(var(--rgb-teal)/.28);}
.ic-green{background:var(--grad-green);box-shadow:0 12px 24px rgb(var(--rgb-green)/.28);}
.ic-orange{background:var(--grad-orange);box-shadow:0 12px 24px rgb(var(--rgb-orange)/.28);}
.feat-card h4{font-size:17px;margin-bottom:8px;color:var(--ink);}
.feat-card p{font-size:13px;color:var(--text-2);line-height:1.55;}

/* steps */
.step-card{
  flex:1;max-width:400px;min-width:240px;background:var(--step-card-bg);
  border:1px solid var(--border);border-radius:var(--radius);padding:30px 24px 26px;
  box-shadow:var(--shadow-sm);position:relative;transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.step-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);}
.step-num{
  position:absolute;top:-16px;left:22px;width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--teal));color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;
  box-shadow:var(--shadow-md);
}
.step-ic{
  display:inline-flex;width:44px;height:44px;border-radius:50%;align-items:center;justify-content:center;
  background:var(--surface);color:var(--primary-text);margin:8px 0 12px;border:1px solid var(--border);
  box-shadow:0 8px 18px rgb(var(--rgb-primary)/.12);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.step-card:hover .step-ic{transform:translateY(-3px) scale(1.05);box-shadow:0 12px 24px rgb(var(--rgb-primary)/.18);}
.step-card h4{font-size:18px;margin-bottom:8px;color:var(--ink);}
.step-card p{font-size:13px;color:var(--text-2);line-height:1.55;}

/* reviews */
.review-card{display:flex;align-items:flex-start;gap:14px;max-width:300px;}
.slide-reviews .review-card{max-width:none;}
.avatar{
  flex:0 0 auto;width:48px;height:48px;border-radius:50%;overflow:hidden;
  box-shadow:0 0 0 2px var(--c,var(--primary)),0 0 0 5px var(--avatar-ring),0 6px 16px rgba(15,23,42,.12);
}
/* reviews 头像精灵图 */
.av {
    background: url("../assets/reviews.png") no-repeat;
    background: image-set(
        url("../assets/reviews.webp") type("image/webp"),
        url("../assets/reviews.png") type("image/png")
    ) no-repeat;
    width: 48px;
    height: 48px;
	background-size: 192px auto;
}
.av1 { background-position: 0 0; --c:var(--primary); }
.av2 { background-position: -48px 0; --c:var(--teal); }
.av3 { background-position: -96px 0; --c:var(--orange); }
.av4 { background-position: -144px 0; --c:var(--orange); }
.bubble{
  position:relative;background:var(--bubble-bg);
  border:1px solid var(--border);
  border-radius:18px 18px 18px 4px;padding:14px 16px;box-shadow:var(--shadow-sm);
  transition:box-shadow .25s var(--ease),transform .25s var(--ease);
}
.review-card:hover .bubble{box-shadow:var(--shadow-md);transform:translateY(-2px);}
.bubble::before{
  content:"";position:absolute;left:-6px;top:18px;width:12px;height:12px;
  background:var(--surface);border-left:1px solid var(--border);border-bottom:1px solid var(--border);
  transform:rotate(45deg);border-radius:2px;
}
.bubble p{font-size:13px;color:var(--text);line-height:1.55;}
.rev-name{display:block;margin-top:8px;font-size:11.5px;font-weight:700;color:var(--primary-text);}

/* dots */
.dots{display:flex;justify-content:center;gap:12px;margin-top:8px;}
.dot{
  width:11px;height:11px;border-radius:50%;border:none;cursor:pointer;padding:0;
  background:var(--border-strong);opacity:.5;transition:width .3s var(--ease),opacity .3s var(--ease),background .3s var(--ease);
}
.dot:hover{opacity:.8;}
.dot.is-active{width:30px;border-radius:999px;background:var(--grad-primary);}

@media (orientation: portrait), (max-width: 1279px){
  /* ============ 轮播宣传区（第二屏）：高度由内容撑开、卡片单列堆叠 ============ */
  .promo{margin-top:8px;padding-top:0;padding-bottom:0;padding-left:0;padding-right:0;}
  .promo-inner{position:relative;}
  /* carousel 固定高度，三层绝对铺满同一高度 → 切换零跳动、整体等高 */
  .carousel{height:clamp(560px,140vw,660px);min-height:0;}
  .slide{position:absolute;inset:0;justify-content:center;gap:16px;padding:0 8px;overflow:hidden;}
  .slide.is-active{position:absolute;inset:0;}
  .layer-head{min-height:38px;padding:0 6px;justify-content:center;}
  .layer-title{font-size:clamp(18px,5vw,23px);line-height:1.15;}
  .layer-cards{flex-direction:column;align-items:stretch;gap:10px;flex-wrap:nowrap;width:100%;max-width:440px;margin:0 auto;}
  .feat-card{max-width:none;min-width:0;width:100%;padding:11px 14px;border-radius:12px;}
  .feat-ic{width:36px;height:36px;margin-bottom:6px;border-radius:11px;}
  .feat-card h4{font-size:14.5px;margin-bottom:3px;}
  .feat-card p{font-size:11px;line-height:1.35;}
  .step-card{max-width:none;min-width:0;width:100%;padding:16px 14px 14px;margin-top:16px;border-radius:14px;}
  .step-card h4{font-size:15.5px;margin-bottom:3px;}
  .step-ic{margin:4px 0 8px;}
  .step-card p{font-size:11px;line-height:1.35;}
  .slide-reviews .layer-cards{grid-template-columns:1fr;gap:10px;margin-top:10px;width:100%;max-width:440px;margin-left:auto;margin-right:auto;}
  .review-card{max-width:none;align-items:flex-start;gap:10px;}
  .avatar{width:38px;height:38px;}
  .bubble{padding:10px 12px;border-radius:16px 16px 16px 4px;}
  .bubble p{font-size:11.5px;line-height:1.35;}
  .rev-name{margin-top:6px;font-size:11px;}
  .dots{margin-top:14px;}
}

@media (orientation:portrait) and (min-width:768px){
  .layer-cards{max-width:600px;}
  .carousel{height:clamp(620px,84vw,720px);}
  .feat-card,.step-card,.review-card{padding:24px 22px;}
}