/* ============================================================
   Products page (pages/products.html)
   产品目录页：与导航 “Products” 抽屉一致，含
   #chips / #reference-designs / #production / #algorithms 四个锚点区块
   ============================================================ */

.pr-page{font-family:var(--font)}

/* —— Hero —— */
.pr-hero{position:relative;overflow:hidden;background:#fff;padding:0 0 36px}
.pr-hero-inner{position:relative;display:grid;grid-template-columns:1fr;gap:32px;align-items:center;min-height:340px;padding:72px 56px;overflow:hidden;background:#fff url("../assets/img/pr-hero-bg.jpg") center/cover no-repeat}
.pr-hero-text{max-width:680px}
.pr-hero .eyebrow{margin-bottom:16px}
.pr-hero h1{font-size:clamp(34px,4.6vw,56px);line-height:1.06;letter-spacing:-.03em;margin:0 0 20px;max-width:20ch}
.pr-hero .pr-lead{font-size:clamp(16px,1.8vw,19px);line-height:1.7;color:var(--muted);max-width:60ch;margin:0 0 44px}
.pr-hero-cta{display:flex;gap:14px;flex-wrap:wrap}

/* —— Generic section —— */
.pr-section{padding:48px 0}
.pr-section--soft{background:var(--zone-soft)}

/* anchored ids must clear the fixed header AND the sticky anchor nav when jumped to */
.pr-page [id]{scroll-margin-top:120px}

/* —— In-page anchor nav (mirrors the drawer groups) ——
   nav 全宽 sticky（背景盖满整行），
   内部套 .container 让 tab 与页面其它内容左右对齐。 */
.pr-anchornav{
  position:sticky;top:72px;z-index:30;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(160%) blur(8px);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
}
.pr-anchornav .container{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding-top:10px;padding-bottom:10px}
.pr-anchornav a{
  position:relative;
  font-size:14px;font-weight:500;color:var(--muted);
  background:transparent;padding:8px 14px;border-radius:999px;
  text-decoration:none;white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.pr-anchornav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:1px;
  background:#e53935;transform:scaleX(0);transition:transform .2s ease;
}
.pr-anchornav a:hover{background:rgba(13,27,42,.05);color:var(--ink)}
.pr-anchornav a:hover::after{transform:scaleX(1)}
.pr-anchornav a.active{color:var(--ink);font-weight:600}
.pr-anchornav a.active::after{transform:scaleX(1)}

/* —— Sub-section (chips / reference / production / algorithms) —— */
.pr-subsection{padding:34px 0 8px}
.pr-subhead{margin-bottom:22px}
.pr-subhead h2{font-size:clamp(22px,2.6vw,30px);letter-spacing:-.02em;margin:0;line-height:1.18}

/* —— Chip / calibrator feature block —— */
.pr-chip{display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.pr-chip-visual{aspect-ratio:4/3;border-radius:14px;border:1px solid var(--line);background:#fff;position:relative;overflow:hidden}
.pr-chip-visual::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(13,27,42,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(13,27,42,.05) 1px,transparent 1px);background-size:20px 20px;opacity:.5}
.pr-chip-visual svg,.pr-chip-visual img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
.pr-chip-body{display:flex;flex-direction:column;gap:10px}
.pr-chip-body h3{font-size:21px;letter-spacing:-.01em;margin:0}
.pr-chip-body p{font-size:14.5px;color:var(--muted);line-height:1.65;margin:0}
.pr-spec{list-style:none;padding:0;margin:6px 0;display:grid;grid-template-columns:1fr 1fr;gap:8px 18px}
.pr-spec li{font-size:15px;color:var(--ink);padding:10px 14px;background:var(--zone-soft);border-radius:8px;border:1px solid var(--line)}
.pr-chip-body a{font-size:13px;font-weight:700;color:var(--blue);margin-top:2px}

/* —— Module / reference-design grid —— */
.pr-hw-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pr-hw-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s;display:flex;flex-direction:column}
.pr-hw-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--blue);border-width:2px}
.pr-hw-visual{position:relative;aspect-ratio:4/3;background:#fff;border-bottom:1px solid var(--line);overflow:hidden}
.pr-hw-visual::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(13,27,42,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(13,27,42,.05) 1px,transparent 1px);background-size:20px 20px;opacity:.5}
.pr-hw-visual svg,.pr-hw-visual img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}
.pr-hw-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.pr-hw-tag{display:inline-flex;align-self:flex-start;font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--blue-600);background:var(--blue-100);padding:4px 9px;border-radius:6px}
.pr-hw-card h3{font-size:17px;line-height:1.3;letter-spacing:-.01em;margin:0}
.pr-hw-card p{font-size:13.5px;color:var(--muted);line-height:1.6;flex:1;margin:0}
.pr-hw-card a{font-size:13px;font-weight:700;color:var(--blue);margin-top:2px}

/* —— 文本链接 hover 动效：下划线滑入 + 颜色加深（与 developer.css 同款） —— */
.pr-chip-body a,.pr-hw-card a{align-self:flex-start;padding-bottom:2px;background-image:linear-gradient(currentColor,currentColor);background-size:0% 2px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .28s ease,color .2s ease}
.pr-chip-body a:hover,.pr-hw-card a:hover{background-size:100% 2px;color:var(--blue-600)}

/* —— Algorithm cards —— */
.pr-algo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pr-algo-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;transition:.3s;display:flex;flex-direction:column;gap:12px}
.pr-algo-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--blue-100)}
.pr-ico{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,var(--blue),var(--blue-400));color:#fff;display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.pr-ico svg{width:24px;height:24px}
.pr-algo-card h3{font-size:19px;letter-spacing:-.01em;margin:0}
.pr-algo-card p{font-size:14px;color:var(--muted);line-height:1.65;flex:1;margin:0}
/* 「免费提供」是徽章不是链接（原为无 href 的 <a>，假链接）：复用 pr-hw-tag 徽章样式 */
.pr-algo-card .pr-hw-tag{margin-top:2px}

/* —— CTA 收口块（对齐 applications 页面 .cta：浅蓝渐层 + 暗文 + 蓝按钮） —— */
.cta{
  position:relative; overflow:hidden;
  background:
    radial-gradient(72% 165% at 50% 128%, rgba(46,107,255,.16) 0%, transparent 68%),
    linear-gradient(180deg, #FFFFFF 0%, #EDF3FF 58%, #E6EEFF 100%);
}
.cta::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background-image:
    linear-gradient(rgba(46,107,255,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46,107,255,.055) 1px, transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image: radial-gradient(90% 125% at 50% 0%, #000, transparent 74%);
          mask-image: radial-gradient(90% 125% at 50% 0%, #000, transparent 74%);
}
.cta .container{ position:relative; z-index:1; padding:76px 0; text-align:center }
.cta h2{ font-size:clamp(22px,3vw,34px); margin:0 0 12px; color:var(--ink); letter-spacing:-.01em; font-weight:600 }
.cta p{ font-size:16px; color:var(--body); margin:0 0 28px }
.cta .btn-row{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap }
.cta .btn{
  border-radius:999px; padding:12px 28px; text-decoration:none;
  font-size:15px; font-weight:600;
  transition:background .2s, transform .2s, box-shadow .2s;
}
.cta .btn-primary{
  background:var(--blue); color:#fff;
  box-shadow:0 8px 22px rgba(46,107,255,.26);
}
.cta .btn-primary:hover{
  background:var(--blue-600); transform:translateY(-2px);
  box-shadow:0 12px 28px rgba(46,107,255,.34);
}
.cta .btn-outline{
  background:#fff; color:var(--blue);
  border:1.5px solid rgba(46,107,255,.45);
}
.cta .btn-outline:hover{
  background:var(--blue-50); border-color:var(--blue); transform:translateY(-2px);
}

/* —— Responsive —— */
@media(max-width:900px){
  .pr-section{padding:56px 0}
  .pr-hero{padding:0 0 28px}
  .pr-hero-inner{grid-template-columns:1fr;gap:28px;justify-items:center;text-align:center;min-height:0;padding:56px 28px}
  .pr-hero-text{max-width:680px}
  .pr-chip{grid-template-columns:1fr;gap:22px}
  .pr-hw-grid{grid-template-columns:repeat(2,1fr)}
  .pr-algo-grid{grid-template-columns:repeat(2,1fr)}
  .pr-spec{grid-template-columns:1fr}
}
@media(max-width:560px){
  .pr-hw-grid{grid-template-columns:1fr}
  .pr-algo-grid{grid-template-columns:1fr}
}

/* ===========================================================
   收口块 .app-cta —— 复用 uwb-remote.html 设计
   （两端横向收白 + 中部淡蓝光晕 + 垂直白→淡蓝→白渐变）
   =========================================================== */
.app-cta {
  position: relative; overflow: hidden;
  background:
    linear-gradient(90deg, #FFFFFF 0%, rgba(255,255,255,0) 20%, rgba(255,255,255,0) 80%, #FFFFFF 100%),
    radial-gradient(85% 78% at 50% 46%, rgba(46,107,255,.08) 0%, transparent 44%),
    linear-gradient(180deg, #FFFFFF 0%, #FFFFFF 14%, #EDF3FF 46%, #F2F7FF 74%, #FFFFFF 100%);
}
.app-cta .container {
  position: relative; z-index: 1;
  padding-top: 76px; padding-bottom: 76px;
  text-align: center;
}
.app-cta h2 {
  font-size: clamp(22px, 3vw, 34px);
  margin: 0 0 12px;
  color: var(--ink);
}
.app-cta p {
  font-size: 16px;
  color: var(--ink-soft);
  margin: 0 auto 28px;
  max-width: 560px;
}
.app-cta .btn-row {
  display: flex; gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.app-cta .btn-row .btn { padding: 12px 28px; }
.app-cta .btn-outline { border-color: rgba(46,107,255,.45); }

@media (max-width: 560px) {
  .app-cta .container { padding-top: 56px; padding-bottom: 56px; }
  .app-cta h2 { font-size: 24px; }
  .app-cta p { font-size: 15px; margin-bottom: 22px; }
}