/* 智引官网子页面 — 与首页 home.css 共用设计系统 */
/* 页头横幅 */
.page-hero{position:relative;padding:178px 0 86px;border-bottom:1px solid var(--line);overflow:hidden}
.page-hero .bg{position:absolute;inset:0;background:url("assets/hero.jpg") center/cover no-repeat;opacity:.2}
.page-hero .shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,10,11,.96) 0%,rgba(10,10,11,.55) 100%)}
.page-hero .wrap{position:relative}
.page-hero h1{font-size:clamp(40px,5.6vw,74px);line-height:1.14;font-weight:700;letter-spacing:1px;margin:16px 0 18px}
.page-hero .lead{font-size:16.5px;max-width:680px}
.links a.on{color:var(--txt)}
/* 页内小节标题 */
.sub-head{margin:72px 0 26px;display:flex;justify-content:space-between;align-items:baseline;gap:16px;flex-wrap:wrap}
.sub-head:first-child{margin-top:0}
.sub-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:.5px}
.sub-head h2::before{content:"";display:inline-block;width:8px;height:8px;background:var(--acc);margin-right:12px;vertical-align:2px}
.sub-head .en{font-family:"SF Mono","JetBrains Mono",monospace;font-size:11.5px;color:var(--dim);letter-spacing:2px}
/* 产品中心：模块卡 */
.mods8{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.modcard{border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:28px}
.modcard .mh{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.modcard .no{font-family:"SF Mono",monospace;font-size:11.5px;color:var(--dim)}
.modcard h3{font-size:19px;margin:6px 0 12px}
.modcard .plan-tag{font-size:10.5px;color:var(--acc);border:1px solid var(--acc);border-radius:3px;padding:1px 7px;letter-spacing:1px;white-space:nowrap}
.mrow{display:grid;grid-template-columns:76px 1fr;gap:14px;padding:11px 0;border-top:1px solid var(--line);font-size:13.5px;color:var(--sub)}
.mrow b{color:var(--txt);font-weight:600;font-size:12px;font-family:"SF Mono","PingFang SC",monospace;padding-top:2px}
/* 产品中心：四层架构 */
.layers{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:8px;overflow:hidden}
.layer{background:var(--bg);padding:26px 22px}
.layer .ln{font-family:"SF Mono",monospace;font-size:11px;color:var(--acc);letter-spacing:2px;margin-bottom:12px}
.layer h3{font-size:16px;margin-bottom:10px}
.layer p{color:var(--sub);font-size:12.5px;line-height:1.85}
/* 解决方案 */
.sol{border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:34px;margin-bottom:20px}
.sol .sh{display:flex;justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.sol h3{font-size:22px}
.sol .sgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.sol .sgrid>div{border-top:1px solid var(--line2);padding-top:14px}
.sol .sgrid b{display:block;font-size:12px;color:var(--acc);font-family:"SF Mono","PingFang SC",monospace;letter-spacing:1px;margin-bottom:8px;font-weight:500}
.sol .sgrid p{color:var(--sub);font-size:13.5px}
/* 对比表 */
.cmp{width:100%;border-collapse:collapse;border:1px solid var(--line);border-radius:8px;overflow:hidden;font-size:13.5px;background:var(--panel)}
.cmp th,.cmp td{padding:16px 22px;border-top:1px solid var(--line);text-align:left;vertical-align:top}
.cmp tbody tr:first-child th,.cmp tbody tr:first-child td{border-top:none}
.cmp thead th{border-top:none;font-family:"SF Mono","PingFang SC",monospace;font-size:12px;letter-spacing:1px;font-weight:500;color:var(--sub);background:var(--bg)}
.cmp thead th.hz{background:var(--acc);color:var(--acc-ink)}
.cmp td:first-child,.cmp tbody th:first-child{color:var(--sub);white-space:nowrap;font-weight:500;width:110px}
.cmp .yes{color:var(--txt)}
/* 常见问题 */
.faq details{border:1px solid var(--line);border-radius:8px;background:var(--panel);margin-bottom:12px}
.faq summary{cursor:pointer;padding:19px 24px;font-size:15px;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:baseline}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--acc);font-family:"SF Mono",monospace;font-size:17px}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 24px 20px;color:var(--sub);font-size:13.5px;max-width:920px}
/* 场景演示：案例大卡 */
.case{display:grid;grid-template-columns:1.2fr 1fr;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--panel);margin-bottom:24px}
.case .shot{position:relative;min-height:340px}
.case .shot img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.case .shot i{position:absolute;top:14px;left:14px;font-style:normal;font-size:10.5px;color:var(--acc);border:1px solid var(--acc);border-radius:3px;padding:1px 8px;letter-spacing:1px;background:rgba(10,10,11,.72)}
.case .body{padding:34px 32px;display:flex;flex-direction:column}
.case .body h3{font-size:21px;margin:10px 0 8px}
.case .body .cdesc{color:var(--sub);font-size:13px;margin-bottom:20px}
.case .cstep{display:grid;grid-template-columns:64px 1fr;gap:14px;padding:12px 0;border-top:1px solid var(--line)}
.case .cstep .cn{font-family:"SF Mono",monospace;color:var(--acc);font-size:12px;padding-top:2px}
.case .cstep b{display:block;font-size:14px;margin-bottom:2px}
.case .cstep span{color:var(--sub);font-size:12.5px}
/* 关于：路线图 */
.roadmap{width:100%;border-collapse:collapse;font-size:14px}
.roadmap th,.roadmap td{padding:16px 18px;border-top:1px solid var(--line);text-align:left;vertical-align:top}
.roadmap thead th{border-top:none;color:var(--dim);font-family:"SF Mono","PingFang SC",monospace;font-size:11.5px;letter-spacing:2px;font-weight:500}
.roadmap td:first-child{color:var(--acc);font-family:"SF Mono","PingFang SC",monospace;font-size:12.5px;white-space:nowrap;width:110px}
.roadmap td{color:var(--sub)}
/* 联系带 */
.band{border:1px solid var(--line2);border-radius:10px;background:var(--panel);padding:clamp(30px,4vw,52px);display:flex;justify-content:space-between;align-items:center;gap:36px;flex-wrap:wrap}
.band h3{font-size:clamp(21px,2.5vw,28px);margin-bottom:10px}
.band p{color:var(--sub);font-size:14px;max-width:560px}
.band .qr{width:132px;background:#fff;border-radius:10px;padding:9px;flex-shrink:0}
.band .qr img{width:100%;display:block;border-radius:3px}
/* 通用文本卡 */
.tcard{border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:30px}
.tcard p{color:var(--sub);font-size:14px}
@media(max-width:1000px){.mods8,.layers{grid-template-columns:1fr 1fr}.sol .sgrid{grid-template-columns:1fr}.case{grid-template-columns:1fr}.case .shot{min-height:250px}}
@media(max-width:560px){.mods8,.layers{grid-template-columns:1fr}.page-hero{padding:138px 0 58px}.cmp td:first-child,.cmp tbody th:first-child{width:auto;white-space:normal}}