/* ============================================================
 * 产品页共享样式 — 与首页设计语言对齐
 * 2026-08 整改：静态光晕、实色强调、描边 hover、无毛玻璃/渐变字，
 * 全部颜色走 var() 令牌，浅色主题由 site-nav.js 翻转 + 本文件覆盖。
 * 每页通过 --p-accent(-light/-bd) 定义自己的产品色。
 * ============================================================ */
:root{
  --bg:#070b16;--bg2:#0b1020;--surface:rgba(255,255,255,.045);--surface2:rgba(255,255,255,.075);
  --border:rgba(255,255,255,.09);--border-bright:rgba(255,255,255,.16);
  --text:#eef2fb;--text2:#9aa6c2;--text3:#6c7794;
  --accent:#2f7bff;--accent2:#7c5cff;--cyan:#38d6ff;--green:#2ee6a6;--orange:#ff9d4d;
  --interact:#5fa0ff;
  --font-display:"Noto Serif SC","Songti SC","SimSun",serif;
  --radius:20px;--radius-sm:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:-apple-system,"SF Pro Display","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}

/* ---------- 背景：单一静态光晕（与首页一致，去动画 blob） ---------- */
.aurora{position:fixed;inset:0;z-index:-2;overflow:hidden;pointer-events:none}
.aurora::before{content:"";position:absolute;width:55vw;height:55vw;left:-10vw;top:-15vw;border-radius:50%;background:radial-gradient(circle,#2f7bff,transparent 60%);filter:blur(90px);opacity:.18}

.container{max-width:1100px;margin:0 auto;padding:0 28px}
section{position:relative}

/* ---------- 面包屑 ---------- */
.breadcrumb{max-width:1100px;margin:0 auto;padding:18px 28px 0;display:flex;align-items:center;gap:8px;font-size:13px;flex-wrap:wrap}
.breadcrumb a{color:var(--text2);text-decoration:none;transition:color .2s}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .bc-sep{color:var(--text3);font-size:11px}
.breadcrumb .bc-current{color:var(--text)}

/* ---------- Product hero ---------- */
.prod-hero{padding:130px 0 50px;text-align:center}
.back-link{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--text2);text-decoration:none;margin-bottom:24px;transition:color .2s}
.back-link:hover{color:var(--accent)}
.prod-icon-big{width:84px;height:84px;border-radius:24px;margin:0 auto 24px;display:flex;align-items:center;justify-content:center;font-size:34px;font-weight:800;color:var(--p-accent,var(--accent));background:var(--p-accent-light,rgba(47,123,255,.12));border:1px solid var(--p-accent-bd,rgba(47,123,255,.25));font-family:var(--font-display);letter-spacing:-.5px}
.prod-hero h1{font-family:var(--font-display);font-size:clamp(34px,5vw,52px);font-weight:900;letter-spacing:-1.2px;margin-bottom:12px;line-height:1.15}
.prod-hero h1 .grad{color:var(--p-accent,var(--accent))}
.prod-hero .en{color:var(--text3);font-size:15px;font-weight:600;letter-spacing:1px;margin-bottom:18px;text-transform:uppercase}
.prod-hero .desc{color:var(--text2);font-size:17px;max-width:640px;margin:0 auto 20px}
.badge-row{display:flex;justify-content:center;gap:8px;flex-wrap:wrap}
.pbadge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:500;background:var(--surface);border:1px solid var(--border-bright);color:var(--text2)}
.pbadge i{color:var(--interact)}
/* 规划中状态条：与首页徽章口径一致，产品页不再冒充已交付 */
.plan-note{display:flex;align-items:center;justify-content:center;gap:9px;max-width:680px;margin:22px auto 0;padding:11px 18px;border-radius:12px;font-size:13.5px;color:var(--orange);background:rgba(255,157,77,.08);border:1px solid rgba(255,157,77,.22)}

.section{padding:64px 0;scroll-margin-top:84px}
.section-head{max-width:680px;margin-bottom:40px}
.section-head .tag{display:inline-block;font-size:12px;font-weight:600;color:var(--text2);background:var(--surface);padding:4px 12px;border-radius:999px;margin-bottom:14px;border:1px solid var(--border)}
.section-head h2{font-family:var(--font-display);font-size:clamp(28px,3.5vw,38px);font-weight:900;letter-spacing:-.5px;margin-bottom:12px;line-height:1.2}
.section-head h2 .grad{color:var(--text)}
.section-head p{font-size:16px;color:var(--text2)}
.section-alt{background:rgba(255,255,255,.015);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}

/* ---------- Feature grid ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.feat-card{padding:28px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);transition:border-color .25s,background-color .25s}
.feat-card:hover{border-color:var(--border-bright);background:var(--surface2)}
.feat-ic{width:50px;height:50px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:21px;margin-bottom:16px;color:var(--interact);background:rgba(95,160,255,.1);border:1px solid rgba(95,160,255,.16)}
.feat-card:nth-child(2n) .feat-ic{color:var(--accent2);background:rgba(124,92,255,.1);border-color:rgba(124,92,255,.16)}
.feat-card:nth-child(3n) .feat-ic{color:var(--green);background:rgba(46,230,166,.1);border-color:rgba(46,230,166,.16)}
.feat-card h4{font-size:17px;font-weight:700;margin-bottom:8px}
.feat-card p{font-size:13.5px;color:var(--text2);line-height:1.65}

/* ---------- Arch diagram (text-based) ---------- */
.arch-box{padding:36px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border-bright)}
.arch-layer{padding:18px 24px;border-radius:var(--radius-sm);margin-bottom:12px;text-align:center;border:1px solid var(--border)}
.arch-layer:last-child{margin-bottom:0}
.arch-layer .al-title{font-size:15px;font-weight:700;margin-bottom:4px}
.arch-layer .al-desc{font-size:12.5px;color:var(--text2)}
.arch-layer.app{background:rgba(47,123,255,.08);border-color:rgba(47,123,255,.2)}
.arch-layer.platform{background:rgba(56,214,255,.05);border-color:rgba(56,214,255,.16)}
.arch-layer.driver{background:rgba(46,230,166,.05);border-color:rgba(46,230,166,.16)}
.arch-layer.device{background:rgba(255,157,77,.05);border-color:rgba(255,157,77,.16)}
.arch-arrow{text-align:center;color:var(--text3);font-size:14px;margin:-4px 0 8px}

/* ---------- 小卡网格（协议 / 监测维度 / 平台兼容）---------- */
.proto-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px}
.proto-card{padding:20px;border-radius:var(--radius-sm);background:var(--surface);border:1px solid var(--border);text-align:center;transition:border-color .25s}
.proto-card:hover{border-color:var(--border-bright)}
.proto-ic{font-size:22px;margin-bottom:10px}
.proto-card h5{font-size:14px;font-weight:700;margin-bottom:4px}
.proto-card span{font-size:11.5px;color:var(--text3)}
/* 图标色调类：走全局令牌，浅色主题自动翻转 */
.t-blue{color:var(--accent)}.t-green{color:var(--green)}.t-purple{color:var(--accent2)}
.t-cyan{color:var(--cyan)}.t-orange{color:var(--orange)}.t-pink{color:var(--interact)}

/* ---------- Scene ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.scene-card{padding:28px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);transition:border-color .25s}
.scene-card:hover{border-color:var(--border-bright)}
.scene-num{font-size:13px;font-weight:700;color:var(--interact);margin-bottom:10px;letter-spacing:1px;font-variant-numeric:tabular-nums}
.scene-card h4{font-size:18px;font-weight:700;margin-bottom:10px}
.scene-card p{font-size:13.5px;color:var(--text2);line-height:1.7}

/* ---------- 编辑式编号清单（产品独特模块通用底座）---------- */
.loop-list{max-width:760px;margin:0 auto}
.loop-row{display:grid;grid-template-columns:auto 1fr;gap:20px;padding:22px 0;border-bottom:1px solid var(--border)}
.loop-row:last-child{border-bottom:none}
.loop-no{font-size:14px;font-weight:800;color:var(--text3);font-variant-numeric:tabular-nums;padding-top:2px}
.loop-body h4{font-size:16px;font-weight:700;margin-bottom:5px}
.loop-body p{font-size:13.5px;color:var(--text2);line-height:1.65}
/* 三栏角色视图（纯排版，无卡片）*/
.role-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;max-width:900px;margin:0 auto}
.role-col{padding:8px 32px;border-left:1px solid var(--border)}
.role-col:first-child{border-left:none}
.role-col h4{font-family:var(--font-display);font-size:17px;font-weight:900;margin-bottom:4px}
.role-col .role-for{font-size:11.5px;color:var(--text3);letter-spacing:.5px;margin-bottom:12px;display:block}
.role-col ul{list-style:none}
.role-col li{font-size:13.5px;color:var(--text2);padding:7px 0;border-bottom:1px dashed var(--border);line-height:1.55}
.role-col li:last-child{border-bottom:none}
/* 认证实物模块（OptiBuilder）*/
.cert-wrap{display:flex;gap:36px;align-items:center;max-width:820px;margin:0 auto;flex-wrap:wrap;justify-content:center}
.cert-fig{margin:0;width:250px;border-radius:12px;overflow:hidden;background:var(--surface);border:1px solid var(--border)}
.cert-fig img{display:block;width:100%;height:auto}
.cert-fig figcaption{padding:12px 14px;font-size:12px;color:var(--text2);line-height:1.5}
.cert-text{flex:1;min-width:260px}
.cert-text h4{font-family:var(--font-display);font-size:19px;font-weight:900;margin-bottom:10px}
.cert-text p{font-size:14px;color:var(--text2);line-height:1.75;margin-bottom:8px}

/* ---------- Doc CTA ---------- */
.doc-cta{padding:40px;border-radius:var(--radius);background:rgba(47,123,255,.06);border:1px solid rgba(47,123,255,.18);display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.doc-cta-ic{width:60px;height:60px;border-radius:16px;background:rgba(47,123,255,.1);border:1px solid rgba(47,123,255,.2);display:flex;align-items:center;justify-content:center;font-size:26px;color:var(--interact);flex-shrink:0}
.doc-cta-body{flex:1;min-width:200px}
.doc-cta-body h3{font-size:19px;font-weight:700;margin-bottom:6px}
.doc-cta-body p{font-size:14px;color:var(--text2)}
.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 26px;border-radius:12px;font-size:15px;font-weight:600;text-decoration:none;transition:background-color .25s,border-color .25s;border:none}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#1e6af0}

/* ---------- Footer（含 ICP 备案）---------- */
.footer{border-top:1px solid var(--border);padding:40px 0 32px;margin-top:64px}
.footer p{font-size:12.5px;color:var(--text3);text-align:center;line-height:1.9}
.footer a{color:var(--text3);text-decoration:none;transition:color .2s}
.footer a:hover{color:var(--accent)}

/* ---------- 施工中示意图占位 ---------- */
.const-banner{margin:0 auto;max-width:680px;padding:56px 40px;border-radius:20px;background:repeating-linear-gradient(45deg,rgba(255,255,255,.02),rgba(255,255,255,.02) 14px,rgba(255,255,255,.045) 14px,rgba(255,255,255,.045) 28px);border:1px dashed rgba(255,255,255,.16);text-align:center;position:relative;overflow:hidden}
.const-icon{width:72px;height:72px;border-radius:20px;margin:0 auto 20px;display:flex;align-items:center;justify-content:center;font-size:30px;color:#ffb37a;background:rgba(255,157,77,.1);border:1px solid rgba(255,157,77,.2)}
.const-banner h3{font-size:20px;font-weight:700;margin-bottom:8px;color:var(--text)}
.const-banner p{font-size:14px;color:var(--text2);max-width:420px;margin:0 auto}
.const-bar{height:6px;border-radius:3px;background:var(--surface);margin:24px auto 0;max-width:280px;overflow:hidden;position:relative}
.const-bar::after{content:"";position:absolute;inset:0;width:40%;border-radius:3px;background:linear-gradient(90deg,transparent,#ff9d4d,transparent);animation:const-slide 1.8s linear infinite}
@keyframes const-slide{0%{transform:translateX(-100%)}100%{transform:translateX(350%)}}

/* ---------- 相关产品 ---------- */
.related{padding:48px 0 64px;border-top:1px solid var(--border);margin-top:48px}
.related-head{text-align:center;margin-bottom:28px}
.related-head h3{font-family:var(--font-display);font-size:22px;font-weight:900;letter-spacing:-.5px;margin-bottom:6px}
.related-head p{font-size:14px;color:var(--text2)}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;max-width:900px;margin:0 auto}
.related-card{padding:20px;border-radius:14px;background:var(--surface);border:1px solid var(--border);text-decoration:none;color:inherit;display:flex;align-items:center;gap:14px;transition:border-color .25s,background-color .25s}
.related-card:hover{border-color:var(--border-bright);background:var(--surface2)}
.related-card.current{opacity:.5;pointer-events:none}
.related-ic{width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:800;flex-shrink:0;font-family:var(--font-display)}
.ri-blue{color:var(--accent);background:rgba(47,123,255,.1)}
.ri-cyan{color:var(--cyan);background:rgba(56,214,255,.08)}
.ri-green{color:var(--green);background:rgba(46,230,166,.08)}
.ri-purple{color:var(--accent2);background:rgba(124,92,255,.08)}
.related-card b{font-size:14.5px;display:block}
.related-card span{font-size:11.5px;color:var(--text3)}

/* ---------- 内容默认可见（与首页一致的克制入场策略）---------- */
.reveal{opacity:1;transform:none}

@media(max-width:768px){
  .section{padding:52px 0}
  .prod-hero{padding:110px 0 36px}
  .role-grid{grid-template-columns:1fr}
  .role-col{border-left:none;border-top:1px solid var(--border);padding:20px 4px}
  .role-col:first-child{border-top:none}
  .arch-box{padding:24px 18px}
  .cert-wrap{gap:24px}
}

/* ============ 浅色主题（site-nav.js 翻转令牌后补齐表面层）============ */
[data-theme="light"] .feat-card,
[data-theme="light"] .proto-card,
[data-theme="light"] .scene-card,
[data-theme="light"] .related-card,
[data-theme="light"] .arch-box{background:#fff;border-color:rgba(0,0,0,.08);box-shadow:0 1px 3px rgba(0,0,0,.04),0 4px 16px rgba(0,0,0,.03)}
[data-theme="light"] .feat-card:hover,
[data-theme="light"] .proto-card:hover,
[data-theme="light"] .scene-card:hover,
[data-theme="light"] .related-card:hover{border-color:rgba(0,122,255,.35)}
[data-theme="light"] .arch-layer.app{background:rgba(0,122,255,.05);border-color:rgba(0,122,255,.14)}
[data-theme="light"] .arch-layer.platform{background:rgba(90,200,250,.07);border-color:rgba(90,200,250,.2)}
[data-theme="light"] .arch-layer.driver{background:rgba(52,199,89,.06);border-color:rgba(52,199,89,.18)}
[data-theme="light"] .arch-layer.device{background:rgba(255,149,0,.06);border-color:rgba(255,149,0,.18)}
[data-theme="light"] .section-alt{background:rgba(0,0,0,.015);border-color:#e5e5ea}
[data-theme="light"] .doc-cta{background:rgba(0,122,255,.04);border-color:rgba(0,122,255,.14)}
[data-theme="light"] .const-banner{background:repeating-linear-gradient(45deg,#eef3fb,#eef3fb 14px,#e2eaf5 14px,#e2eaf5 28px);border-color:#d1d1d6}
[data-theme="light"] .const-bar{background:rgba(30,60,120,.08)}
[data-theme="light"] .plan-note{background:rgba(217,119,6,.07);border-color:rgba(217,119,6,.25);color:#b45309}
[data-theme="light"] .loop-row{border-color:#e5e5ea}
[data-theme="light"] .role-col{border-color:#e5e5ea}
[data-theme="light"] .role-col li{border-color:#ececf0}
[data-theme="light"] .cert-fig{background:#fff;border-color:#e5e5ea}
[data-theme="light"] .aurora::before{opacity:.1}