/* ==========================================================================
   site-chrome.css —— 全站头部 / 尾部「唯一样式源」
   由 /inc/header.html 与 /inc/footer.html 自动引用，所有页面共用
   改这一个文件 = 全站头尾同步生效；页面内不要再写 .topbar / .navbar /
   .navmenu / .site-footer 的样式
   版本：v1  2026-10-20
   ========================================================================== */

/* ---------- 局部变量：不从页面 :root 继承，避免各页差异导致外观漂移 ---------- */
.site-header,.site-footer{
  --c-ink:#012d5e;
  --c-ink-50:#f8fafc;
  --c-accent:#ff6900;
  --c-text-1:#0f172a;
  --c-text-2:#475569;
  --c-text-3:#94a3b8;
  --c-line:#e2e8f0;
  --c-r:8px;
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
.site-header *,.site-footer *{box-sizing:border-box}
.site-header ul,.site-footer ul{list-style:none;margin:0;padding:0}
.site-header p,.site-footer p{margin:0}
.site-header h3,.site-footer h3{margin:0;font-weight:500;line-height:1.2;letter-spacing:-.01em}
.site-header a,.site-footer a{text-decoration:none;color:inherit}
.site-header button{font:inherit;cursor:pointer}
.site-header .container,.site-footer .container{width:min(1400px,100% - 32px);margin-inline:auto}
@media (min-width:768px){
  .site-header .container,.site-footer .container{width:min(1400px,100% - 56px)}
}

/* ---------- 一、公告条 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff}
.site-header .topbar{background:var(--c-ink);color:#a8c4e0;font-size:12px}
.site-header .topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:32px}
.site-header .topbar__news{display:flex;align-items:center;gap:8px;overflow:hidden;white-space:nowrap;line-height:1.5}
.site-header .topbar__news .tag{background:var(--c-accent);color:var(--c-ink);border-radius:4px;padding:1px 6px;font-weight:500;flex:0 0 auto}
.site-header .topbar__meta{display:none;align-items:center;gap:16px}
@media (min-width:992px){.site-header .topbar__meta{display:flex}}
.site-header .topbar__meta li+li{padding-left:16px;border-left:1px solid rgba(255,255,255,.18)}
.site-header .topbar a{color:inherit}
.site-header .topbar a:hover{color:#fff;text-decoration:underline}

/* ---------- 二、主导航 ---------- */
.site-header .navbar{background:#fff;border-bottom:1px solid var(--c-line);transition:box-shadow .2s}
.site-header .navbar.is-scrolled{box-shadow:0 4px 20px rgba(15,23,42,.07)}
.site-header .navbar__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:64px}
@media (min-width:992px){.site-header .navbar__inner{min-height:76px}}
.site-header .logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:500;color:var(--c-ink);flex:0 0 auto}
.site-header .logo__mark{width:28px;height:28px;border-radius:7px;background:var(--c-ink);display:grid;place-items:center;color:#fff;font-size:12px;font-weight:500;flex:0 0 auto}
.site-header .logo__sub{font-size:11px;color:var(--c-text-3);letter-spacing:.06em}
.site-header .navmenu{display:none}
@media (min-width:992px){
  .site-header .navmenu{display:flex;align-items:center;gap:4px}
  .site-header .navmenu>li>a{display:block;padding:10px 14px;border-radius:var(--c-r);font-size:15px;color:var(--c-text-1);transition:color .2s,background-color .2s;white-space:nowrap}
  .site-header .navmenu>li>a:hover{color:var(--c-ink)}
  .site-header .navmenu>li>a[aria-current="page"]{color:var(--c-ink);font-weight:500}
  .site-header .navmenu .nav-cta{margin-left:12px}
}

/* ---------- 三、移动端汉堡 / 抽屉 ---------- */
.site-header .nav-toggle{display:inline-grid;place-items:center;width:44px;height:44px;background:none;border:0;border-radius:var(--c-r);padding:0}
@media (min-width:992px){.site-header .nav-toggle{display:none}}
.site-header .nav-toggle span{display:block;width:20px;height:2px;background:var(--c-ink);border-radius:2px;position:relative}
.site-header .nav-toggle span::before,.site-header .nav-toggle span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--c-ink);border-radius:2px}
.site-header .nav-toggle span::before{top:-6px}
.site-header .nav-toggle span::after{top:6px}
.site-header .nav-drawer{display:none;border-top:1px solid var(--c-line);background:#fff;max-height:calc(100vh - 96px);overflow-y:auto}
.site-header .nav-drawer.is-open{display:block}
@media (min-width:992px){.site-header .nav-drawer{display:none!important}}
.site-header .nav-drawer ul{padding:8px 0 20px}
.site-header .nav-drawer a{display:block;padding:14px 4px;font-size:16px;border-bottom:1px solid var(--c-ink-50)}
.site-header .nav-drawer .btn{width:100%;margin-top:16px;border-bottom:0}

/* ---------- 四、按钮（限头部 / 尾部内生效，不污染页面） ---------- */
.site-header .btn,.site-footer .btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border:1px solid transparent;border-radius:var(--c-r);
  font-size:16px;font-weight:500;line-height:1;cursor:pointer;
  transition:transform .2s ease-out,background-color .2s,border-color .2s,box-shadow .2s;
}
.site-header .btn--primary,.site-footer .btn--primary{background:var(--c-accent);color:var(--c-ink)}
.site-header .btn--primary:hover,.site-footer .btn--primary:hover{transform:scale(1.05)}
.site-header .btn--primary:active,.site-footer .btn--primary:active{transform:scale(.95)}
.site-header .btn--ghost,.site-footer .btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.site-header .btn--ghost:hover,.site-footer .btn--ghost:hover{background:rgba(255,255,255,.1);transform:scale(1.05)}
.site-header .btn--outline,.site-footer .btn--outline{background:#fff;color:var(--c-ink);border-color:#cbd5e1}
.site-header .btn--outline:hover,.site-footer .btn--outline:hover{border-color:var(--c-ink);transform:scale(1.05)}
.site-header .btn--sm,.site-footer .btn--sm{min-height:38px;padding:0 18px;font-size:14px}
@media (prefers-reduced-motion:reduce){
  .site-header .btn,.site-footer .btn{transition:none}
  .site-header .btn:hover,.site-footer .btn:hover{transform:none}
}

/* ---------- 五、页尾 ---------- */
.site-footer{background:#012247;color:#9db4d4;font-size:13px}
.site-footer .footer__cta{background:var(--c-ink);padding:30px 0}
.site-footer .footer__cta-in{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:center}
.site-footer .footer__cta-title{font-size:19px;font-weight:500;color:#fff;margin-bottom:6px}
.site-footer .footer__cta-sub{font-size:13px;color:#9db4d4}
.site-footer .footer__cta-act{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.site-footer .footer__main{padding:36px 0 30px}
.site-footer .footer__grid{display:grid;gap:32px}
@media (min-width:768px){.site-footer .footer__grid{grid-template-columns:repeat(2,1fr);gap:28px}}
@media (min-width:992px){.site-footer .footer__grid{grid-template-columns:1.5fr .9fr .9fr 1.5fr;gap:28px}}
.site-footer .footer__grid h3{font-size:13px;font-weight:500;color:#fff;margin-bottom:14px}
.site-footer .footer__grid li{font-size:13px;color:#9db4d4;margin-bottom:10px}
.site-footer .footer__grid a{color:#9db4d4}
.site-footer .footer__grid a:hover{color:#fff;text-decoration:underline}
.site-footer .footer__brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.site-footer .footer__brand .logo__mark{width:38px;height:38px;border-radius:10px;background:#fff;color:var(--c-ink);font-size:14px;display:grid;place-items:center;font-weight:500}
.site-footer .footer__brand strong{font-size:16px;color:#fff;font-weight:500}
.site-footer .footer__desc{font-size:13px;color:#9db4d4;line-height:1.7;max-width:30em}
.site-footer .footer__facts{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.site-footer .footer__facts span{font-size:12px;color:#c7d6ec;border:1px solid #2a4a78;border-radius:999px;padding:3px 10px}
.site-footer .qr-row{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:16px}
.site-footer .qr{text-align:center}
.site-footer .qr__box{width:96px;height:96px;background:#fff;border-radius:8px;display:grid;place-items:center;
  font-size:11px;color:var(--c-text-3);text-align:center;padding:4px;overflow:hidden}
.site-footer .qr__box img{width:100%;height:100%;object-fit:contain;display:block}
.site-footer .qr__cap{font-size:12px;color:#c7d6ec;margin-top:8px}
.site-footer .footer__bottom{background:#011a38;padding:16px 0;font-size:12px;color:#6d84a8}
.site-footer .footer__bottom-in{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center}
.site-footer .footer__top{color:#6d84a8}
.site-footer .footer__top:hover{color:#fff}