:root{--c1:#15529c;--c1d:#0b2f5e;--c1l:#eaf1fb;--bg:#f6f8fb;--line:#e4e8f0;--txt:#1b2231;--muted:#6b7590;--warn:#c2410c}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{font:16px/1.75 -apple-system,"PingFang SC","Microsoft YaHei","Segoe UI",Arial,sans-serif;color:var(--txt);background:#fff}
a{color:var(--c1);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.narrow{max-width:860px}

/* header */
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(6px)}
.site-header .wrap{display:flex;align-items:center;height:58px;gap:20px}
.logo{font-size:20px;font-weight:800;color:var(--c1d);letter-spacing:.5px;white-space:nowrap}
.logo span{color:var(--c1)}
.site-nav{display:flex;gap:16px;overflow-x:auto;scrollbar-width:none}
.site-nav::-webkit-scrollbar{display:none}
.site-nav a{font-size:14.5px;color:#41506b;white-space:nowrap;padding:4px 0}
.site-nav a.on{color:var(--c1);font-weight:600;border-bottom:2px solid var(--c1)}
.head-search{margin-left:auto;flex:0 0 190px}
.head-search input{width:100%;padding:7px 12px;border:1px solid var(--line);border-radius:18px;font-size:13.5px;background:var(--bg);outline:none}
.head-search input:focus{border-color:var(--c1);background:#fff}

/* breadcrumb + head */
.breadcrumb{font-size:13px;color:var(--muted);padding:16px 0 0}
.breadcrumb a{color:var(--muted)}
h1{font-size:28px;line-height:1.4;margin:8px 0 6px;color:var(--c1d)}
.meta-line{color:var(--muted);font-size:13.5px}
.meta-line em{font-style:normal;color:#41506b}

/* answer block */
.answer{background:var(--c1l);border-left:4px solid var(--c1);border-radius:0 10px 10px 0;padding:15px 18px;margin:18px 0;font-size:15.5px;line-height:1.85}
.answer b{color:var(--c1d)}

/* sections */
section{margin:26px 0}
h2{font-size:20px;color:var(--c1d);margin:30px 0 12px;padding-left:11px;border-left:4px solid var(--c1);line-height:1.3}
h3{font-size:16px;margin:18px 0 6px;color:#26314a}
p{margin:10px 0;text-align:justify}

/* hero figure */
figure.hero{margin:18px 0;text-align:center;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:24px}
figure.hero img{max-width:460px;width:100%;height:auto;margin:0 auto}
figcaption{font-size:13px;color:var(--muted);margin-top:10px;text-align:center}
.dl{display:inline-block;margin-top:8px;font-size:13px;padding:4px 12px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--muted)}

/* table */
table.facts{width:100%;border-collapse:collapse;margin:14px 0;font-size:15px}
table.facts th,table.facts td{border:1px solid var(--line);padding:9px 13px;text-align:left;vertical-align:top}
table.facts th{width:108px;background:var(--bg);color:var(--c1d);font-weight:600;white-space:nowrap}
table.facts td.na{color:#9aa3b8}

/* timeline */
.timeline{list-style:none;margin:14px 0;border-left:2px solid var(--line);padding-left:20px}
.timeline li{position:relative;margin:0 0 18px}
.timeline li::before{content:"";position:absolute;left:-27px;top:9px;width:10px;height:10px;border-radius:50%;background:var(--c1)}
.timeline .year{font-weight:700;color:var(--c1d)}

/* cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:12px;margin:14px 0}
.grid.sm{grid-template-columns:repeat(auto-fill,minmax(112px,1fr))}
.card{display:block;background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 8px 10px;text-align:center;transition:.15s;color:inherit}
.card:hover{border-color:var(--c1);box-shadow:0 4px 14px rgba(21,82,156,.10);text-decoration:none;transform:translateY(-1px)}
.card .ph{height:64px;display:flex;align-items:center;justify-content:center;margin-bottom:8px}
.card .ph img{max-height:60px;max-width:100px;object-fit:contain}
.card b{display:block;font-size:14px;font-weight:600;color:#1b2231;line-height:1.4;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.card span{display:block;font-size:11.5px;color:var(--muted);line-height:1.4;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.card .tagline{font-size:11px;color:#8a93a8;margin-top:2px}

/* chips */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.chip{display:inline-block;padding:5px 13px;border:1px solid var(--line);border-radius:16px;font-size:13.5px;background:#fff;color:#3a4560}
.chip:hover{border-color:var(--c1);color:var(--c1);text-decoration:none}
.chip.on{background:var(--c1);color:#fff;border-color:var(--c1)}
/* friend links */
.flinks{display:grid;grid-template-columns:repeat(auto-fill,minmax(158px,1fr));gap:10px;margin:14px 0}
.flinks a{display:block;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:#fff;color:#3a4560;font-size:14px;line-height:1.35;transition:.15s}
.flinks a:hover{border-color:var(--c1);color:var(--c1);text-decoration:none;box-shadow:0 3px 10px rgba(21,82,156,.08)}
.flinks a em{display:block;font-style:normal;font-size:11.5px;color:var(--muted);margin-top:3px}

.tag{display:inline-block;padding:1px 8px;border-radius:4px;font-size:12px;background:var(--c1l);color:var(--c1);margin-right:6px}
.tag.t2{background:#fdf0e6;color:#b45309}
.tag.t3{background:#eef7ee;color:#2f7d32}

/* stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin:16px 0}
a.stat{display:block;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:14px;text-align:center;color:inherit;transition:border-color .15s,box-shadow .15s,transform .15s}
a.stat:hover{text-decoration:none;border-color:var(--c1);box-shadow:0 2px 10px rgba(21,82,156,.12);transform:translateY(-1px)}
a.stat:hover span{color:var(--c1)}
.stat b{display:block;font-size:24px;color:var(--c1);line-height:1.2}
.stat span{font-size:12.5px;color:var(--muted)}
h2[id]{scroll-margin-top:72px}
h3[id]{scroll-margin-top:72px}
h2 .more{float:right;font-size:13.5px;font-weight:400;color:var(--c1);margin-top:2px}
h2 .more:hover{color:var(--c1d)}

/* gallery */
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px;margin:14px 0}
.gallery figure{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:12px;text-align:center}
.gallery img{margin:0 auto;max-height:130px;width:auto}

/* faq */
.faq{border-top:1px solid var(--line);margin-top:14px}
.faq details{border-bottom:1px solid var(--line);padding:12px 0}
.faq summary{font-size:15.5px;font-weight:600;cursor:pointer;color:#26314a;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"Q ";color:var(--c1);font-weight:700}
.faq details p{color:#414b63;font-size:15px;margin:8px 0 0 20px}

/* related */
.rel h3{font-size:14px;color:var(--muted);font-weight:600;margin:16px 0 6px}

/* hero home */
.hero-home{background:linear-gradient(135deg,#0b2f5e,#15529c 62%,#1f6bc4);color:#fff;padding:40px 0 34px;margin-bottom:8px}
.hero-home h1{color:#fff;font-size:32px;margin:0 0 10px}
.hero-home p{color:#d6e4f7;font-size:15.5px;margin:0 0 18px;text-align:left}
.big-search{display:flex;max-width:560px;background:#fff;border-radius:26px;padding:5px;box-shadow:0 8px 26px rgba(0,0,0,.16)}
.big-search input{flex:1;border:0;outline:0;font-size:15px;padding:8px 14px;border-radius:22px;background:transparent}
.big-search button{border:0;background:var(--c1);color:#fff;padding:9px 22px;border-radius:22px;font-size:15px;cursor:pointer}
.hero-note{font-size:13px;color:#b9cdea;margin-top:10px}

/* footer */
.site-footer{margin-top:48px;background:#0e1b2c;color:#9fb0c8;padding:32px 0 26px;font-size:13.5px}
.site-footer a{color:#c3d3e8;margin-right:14px;display:inline-block;line-height:2}
.site-footer .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:18px;margin-bottom:18px}
.site-footer b{color:#fff;display:block;margin-bottom:4px;font-size:14px}
.site-footer .copy{border-top:1px solid #1d2c40;padding-top:14px;color:#7c8ca4;line-height:1.9}

/* text block */
.block-text{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:4px 20px;margin:16px 0}

/* search page */
.search-box{display:flex;gap:8px;margin:16px 0}
.search-box input{flex:1;padding:11px 16px;border:1px solid var(--line);border-radius:10px;font-size:15px;outline:none}
.search-box input:focus{border-color:var(--c1)}
.empty{color:var(--muted);padding:24px 0;text-align:center}

/* 404 */
.e404{padding:60px 0;text-align:center}
.e404 .code{font-size:88px;font-weight:800;color:var(--c1);line-height:1;letter-spacing:2px}
.e404 h1{font-size:24px;margin:12px 0}

@media(max-width:760px){
  h1{font-size:22px}
  .hero-home h1{font-size:24px}
  .hero-home{padding:28px 0 24px}
  .site-nav{gap:12px}
  .head-search{display:none}
  .grid{grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:9px}
  .card{padding:9px 6px}
  .card .ph{height:54px}
  .card .ph img{max-height:50px}
  table.facts th{width:88px;font-size:14px}
  table.facts td{font-size:14px}
  .e404 .code{font-size:64px}
}