:root{
  --brand:#1F4681; --brand-2:#2F5DA8; --ink:#1F2329; --ink-2:#4E5969;
  --ink-3:#86909C; --bg:#F6F7F9; --card:#FFFFFF; --line:#E5E6EB;
  --warn:#8A5A00; --warn-bg:#FFF8E8; --ok:#1D6B45; --ok-bg:#EDF7F1;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.78;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:880px;margin:0 auto;padding:0 20px}

/* 顶栏 */
header.top{background:var(--brand);color:#fff;position:sticky;top:0;z-index:20}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:58px;padding-top:9px;padding-bottom:9px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:9px;color:#fff;font-weight:700;font-size:16.5px;letter-spacing:.2px}
.logo:hover{text-decoration:none}
.logo svg{width:26px;height:26px;flex:none}
nav.menu{display:flex;align-items:center;gap:18px;font-size:14.5px}
nav.menu a{color:rgba(255,255,255,.88)}
nav.menu a:hover{color:#fff;text-decoration:none}
nav.menu a.on{color:#fff;font-weight:600;border-bottom:2px solid rgba(255,255,255,.75);padding-bottom:2px}

/* 首屏 */
.hero{background:linear-gradient(160deg,#1F4681 0%,#2F5DA8 100%);color:#fff;padding:46px 0 44px}
.hero h1{margin:0 0 14px;font-size:27px;line-height:1.45;font-weight:700;letter-spacing:.2px}
.hero .lead{margin:0;font-size:16px;line-height:1.85;color:rgba(255,255,255,.93);max-width:720px}
.hero .tag{display:inline-block;font-size:12.5px;letter-spacing:.6px;border:1px solid rgba(255,255,255,.45);
  border-radius:999px;padding:3px 11px;margin-bottom:15px;color:rgba(255,255,255,.95)}
.hero .actions{margin-top:24px;display:flex;gap:11px;flex-wrap:wrap}
.btn{display:inline-block;padding:10px 20px;border-radius:8px;font-size:15px;font-weight:600;border:1px solid transparent}
.btn-solid{background:#fff;color:var(--brand)}
.btn-solid:hover{text-decoration:none;background:#F0F3F9}
.btn-ghost{border-color:rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{text-decoration:none;background:rgba(255,255,255,.1)}

/* 正文 */
main{padding:34px 0 60px}
section{margin:0 0 30px}
h2{font-size:20px;margin:0 0 15px;padding-left:12px;border-left:4px solid var(--brand);line-height:1.35}
h3{font-size:17px;margin:24px 0 9px}
p{margin:0 0 14px}
ul,ol{margin:0 0 14px;padding-left:22px}
li{margin:0 0 8px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px 24px;margin:0 0 18px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(268px,1fr));gap:14px;margin:0 0 18px}
.mini-card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 20px}
.mini-card h3{margin:0 0 8px;font-size:16px}
.mini-card p{margin:0;font-size:14.5px;color:var(--ink-2)}
.mini-card a.more{font-size:14px;font-weight:600}
.bluf{background:#EEF3FB;border-left:4px solid var(--brand);border-radius:0 10px 10px 0;padding:16px 20px;margin:0 0 22px}
.bluf p{margin:0;font-size:15.5px}
.bluf b{color:var(--brand)}
.note{background:var(--warn-bg);border:1px solid #F3E0B5;border-radius:10px;padding:14px 18px;margin:0 0 16px;font-size:14.5px;color:var(--warn)}
.safe{background:var(--ok-bg);border:1px solid #C6E3D3;border-radius:10px;padding:14px 18px;margin:0 0 16px;font-size:14.5px;color:var(--ok)}
.fact{width:100%;border-collapse:collapse;font-size:14.5px;margin:0;background:#fff}
.tbl{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 16px}
.fact th,.fact td{border:1px solid var(--line);padding:10px 13px;text-align:left;vertical-align:top}
.fact th{background:#F2F5FA;font-weight:600;width:33%;color:var(--brand)}
.qa{border-top:1px solid var(--line);padding:16px 0 4px}
.qa:first-of-type{border-top:0}
.qa dt{font-weight:600;margin:0 0 7px;font-size:16px}
.qa dd{margin:0 0 14px;color:var(--ink-2);font-size:15px}
.path{color:var(--ink-3);font-size:13.5px;margin:0 0 16px}
.crumb{font-size:13.5px;color:var(--ink-3);margin:0 0 14px}
.crumb a{color:var(--ink-3)}
.contact-card{display:grid;grid-template-columns:1fr 168px;gap:22px;align-items:center}
.contact-card img{border:1px solid var(--line);border-radius:10px}
.tel{font-size:20px;font-weight:700;color:var(--brand);letter-spacing:.5px}
.small{font-size:13.5px;color:var(--ink-3)}

/* 页脚 */
footer.site{background:#1B2740;color:rgba(255,255,255,.72);padding:32px 0 34px;font-size:13.5px;line-height:1.9}
footer.site a{color:rgba(255,255,255,.86)}
footer.site .row{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
footer.site .org{color:#fff;font-weight:600;font-size:14.5px;margin-bottom:6px}

@media (max-width:620px){
  .hero{padding:34px 0 32px}
  .hero h1{font-size:22px}
  .contact-card{grid-template-columns:1fr}
  /* 手机端顶栏：logo 占一行，导航变可横向滑动的条 —— 不溢出、不压字、加项也不崩 */
  header.top .wrap{flex-direction:column;align-items:stretch;gap:0;min-height:0;padding-top:0;padding-bottom:0}
  .logo{padding:12px 0}
  nav.menu{
    gap:0;font-size:13.5px;overflow-x:auto;-webkit-overflow-scrolling:touch;
    border-top:1px solid rgba(255,255,255,.16);scrollbar-width:none;
  }
  nav.menu::-webkit-scrollbar{display:none}
  nav.menu a{flex:none;white-space:nowrap;margin-right:19px;padding:11px 0}
  nav.menu a:last-child{margin-right:0}
  .fact th,.fact td{padding:9px 10px;font-size:13.5px}
  .fact th{width:40%}
}