/* ============================================================
 * about.css —— 关于
 * 源：05-原型/about.html
 * 目标模板：page-about.php
 * 本文件 = 该族独有规则（公共外壳见 _base.css）
 * 自动生成，请勿手改
 * ============================================================ */

:root{--blue:#1565C0;--blue-darker:#0A3D8F;--red:#E0301E;--paper:#f5f6f8;--white:#fff;--line:#dde2e8;--text:#222;--muted:#555}
body{font-family:Georgia,serif;background:var(--paper);color:var(--text);line-height:1.75;font-size:16px}
.container{max-width:900px;margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:Arial,sans-serif;font-weight:700}
.nav-item.on>a{color:var(--blue);font-weight:700}
.dropdown .dd-cur{background:var(--paper);font-weight:700}
.hero{position:relative;min-height:40vh;display:flex;align-items:flex-end}
.hero-bg{position:absolute;inset:0;background:url('hero-bg.jpg') center/cover no-repeat}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,61,143,.35),rgba(10,61,143,.6))}
.hero-content{position:relative;z-index:1;padding-bottom:40px}
.hero-content h1{color:#fff;font-size:clamp(1.6rem,3vw,2.4rem)}
.breadcrumb{padding:14px 0;font-size:12px;color:#888;font-family:Arial,sans-serif}
.breadcrumb a{color:#888;text-decoration:none}
.section{padding:56px 0}
.sec-title{font-family:Arial,sans-serif;font-size:21px;color:var(--blue-darker);margin-bottom:20px;font-weight:700}
.section p{font-size:16px;line-height:1.8;margin-bottom:16px;max-width:780px}
.tl-track{display:flex;justify-content:space-between;margin:36px 0 8px;padding:0 20px;position:relative}
.tl-track::before{content:'';position:absolute;top:11px;left:20px;right:20px;height:2px;background:var(--line)}
.tl-item{text-align:center;position:relative;z-index:1}
.tl-dot{width:22px;height:22px;border-radius:50%;background:var(--blue);margin:0 auto 10px;border:4px solid var(--paper)}
.tl-year{font-family:Arial,sans-serif;font-weight:700;font-size:18px;color:var(--blue-darker);display:block}
.tl-label{font-size:12px;color:var(--muted);display:block;margin-top:2px;font-family:Arial,sans-serif}
.photo-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:28px 0}
.photo-box{background:#e8e8e8;border-radius:6px;overflow:hidden;display:grid;place-items:center;min-height:220px}
.photo-box img{width:100%;height:100%;object-fit:cover}
.photo-box span{color:#999;font-size:13px;font-family:Arial,sans-serif}
.photo-caption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px;font-family:Arial,sans-serif}
.patent-track{display:flex;gap:14px;margin-top:24px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:12px;-webkit-overflow-scrolling:touch;scrollbar-width:thin;scrollbar-color:var(--line) transparent}
.patent-box{flex:0 0 160px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:6px;height:200px;display:grid;place-items:center}
.patent-box img{width:100%;height:100%;object-fit:contain;display:block;border-radius:5px;padding:8px}
.patent-hint{text-align:center;font-size:11px;color:#aaa;margin-top:6px;font-family:Arial,sans-serif}
.cert-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;margin-top:24px}
.cert-box{background:#fff;border:1px solid var(--line);border-radius:6px;height:130px;display:grid;place-items:center;padding:8px}
.cert-box img{width:100%;height:100%;object-fit:contain;display:block}
.cert-note{font-size:12px;color:#888;margin-top:20px;font-family:Arial,sans-serif;text-align:center}
.cta-band{background:var(--blue-darker);padding:36px 0;text-align:center}
.cta-band p{color:#c5cae9;font-size:14px;margin:0 0 16px;font-family:Arial,sans-serif}
.cta-btn{display:inline-block;background:var(--red);color:#fff;font-family:Arial,sans-serif;font-weight:700;font-size:15px;padding:12px 32px;text-decoration:none;border-radius:4px}
@media(max-width:768px){
.photo-grid{grid-template-columns:1fr}
.tl-track{flex-direction:column;gap:24px;padding:0}
.tl-track::before{display:none}
.hdr nav{display:none}
.burger{display:block}
.m-nav.open{display:block}
}
.zz-footer{background:#0D47A1;color:#b3d1f2;padding:48px 0 20px;font-family:Arial,sans-serif;border-top:3px solid var(--red)}
@media(max-width:768px){.foot-grid{grid-template-columns:1fr 1fr;gap:24px}.foot-brand{grid-column:1/-1}}