:root{
  --ink:#0e1a2b; --ink2:#16233a; --gold:#c2a24a; --gold2:#e6cd82;
  --paper:#f7f5ef; --card:#ffffff; --line2:#e6e0d2; --muted:#7c8798;
  --maxw:1080px; --maxw2:1120px;
}
html{scroll-behavior:smooth}
body{font-family:"Noto Serif CJK SC","Noto Serif SC","Songti SC","SimSun",Georgia,"Times New Roman",serif;
  background:var(--paper);color:#1c2434;line-height:1.85}
h1,h2,h3,h4{font-family:"Noto Serif CJK SC","Noto Serif SC","Songti SC",Georgia,serif;letter-spacing:.3px}
.wrap{max-width:var(--maxw2);margin:0 auto;padding:0 24px}
a{color:inherit;text-decoration:none}

/* header */
header.site{position:sticky;top:0;z-index:50;background:rgba(14,26,43,.92);backdrop-filter:blur(10px);border-bottom:1px solid rgba(194,162,74,.35)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:700;font-size:18px;color:#f2efe6;letter-spacing:2px}
.nav ul{display:flex;gap:24px;list-style:none;align-items:center}
.nav ul a{color:#c9d3e0;font-size:14.5px;transition:color .2s}
.nav ul a:hover{color:var(--gold2)}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.burger span{width:22px;height:2px;background:#e9e4d6;display:block}

/* hero */
.hero{background:radial-gradient(120% 140% at 20% 0%,#1c2c47 0%,#0e1a2b 55%,#0b1424 100%);
  color:#eee9dc;padding:120px 0 96px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent)}
.hero .kick{color:var(--gold2);letter-spacing:7px;font-size:12.5px;margin-bottom:20px;text-transform:uppercase}
.hero h1{color:#fff;font-size:clamp(34px,5.2vw,58px);line-height:1.2;margin-bottom:20px}
.hero p{color:#c6d0df;font-size:clamp(15px,1.6vw,18px);max-width:720px;margin-bottom:34px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 26px;border-radius:6px;background:var(--gold);color:#1b1405;
  font-weight:700;border:0;cursor:pointer;transition:transform .15s,box-shadow .15s;letter-spacing:.5px}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(194,162,74,.35)}
.btn.ghost{background:transparent;color:var(--gold2);border:1.3px solid rgba(194,162,74,.6)}
.hero .stats{display:flex;gap:40px;flex-wrap:wrap;margin-top:52px;border-top:1px solid rgba(194,162,74,.25);padding-top:28px}
.hero .stat b{display:block;font-size:30px;color:var(--gold2);font-family:Georgia,serif}
.hero .stat span{font-size:13px;color:#9fb0c6;letter-spacing:1px}

/* sections */
.section{padding:82px 0}
.section.soft{background:#f1eee4}
.section h2{font-size:clamp(23px,3vw,32px);margin-bottom:14px;color:var(--ink)}
.section h2 .bar{display:inline-block;width:34px;height:3px;background:var(--gold);vertical-align:middle;margin-right:14px}
.lead{color:#5b6779;margin-bottom:40px;max-width:760px}

/* portrait / author */
.author{display:grid;grid-template-columns:280px 1fr;gap:46px;align-items:start}
.author .plate{background:linear-gradient(160deg,#16233a,#0e1a2b);color:#eee9dc;border-radius:14px;
  padding:36px 28px;text-align:center;box-shadow:0 18px 40px rgba(14,26,43,.22);border:1px solid rgba(194,162,74,.3)}
.author .plate .seal{width:96px;height:96px;margin:0 auto 18px;border-radius:50%;
  border:2px solid var(--gold);display:flex;align-items:center;justify-content:center;font-size:34px;color:var(--gold2)}
.author .plate .nm{font-size:22px;color:#fff;letter-spacing:1px}
.author .plate .en{color:var(--gold2);letter-spacing:2px;font-size:13px;margin-top:4px}
.author .plate .role{color:#9fb0c6;font-size:13px;margin-top:14px;line-height:1.9}
.author .body p{margin-bottom:16px;color:#39445a}
.author .quote{border-left:3px solid var(--gold);padding:6px 0 6px 18px;color:#6a7488;font-style:italic;margin:22px 0}

/* architecture cards */
.grid{display:grid;gap:22px;grid-template-columns:repeat(3,1fr)}
.grid.g2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--line2);border-radius:12px;padding:28px 26px;
  box-shadow:0 8px 22px rgba(14,26,43,.05);transition:transform .18s}
.card:hover{transform:translateY(-4px)}
.card .big{font-family:Georgia,serif;font-size:32px;color:var(--ink);}
.card h3{font-size:17px;margin:8px 0 10px;color:var(--ink)}
.card p{color:#5b6779;font-size:14px}
.card .tag{display:inline-block;font-size:12px;color:var(--gold);letter-spacing:1px;border:1px solid rgba(194,162,74,.5);border-radius:4px;padding:2px 8px;margin-bottom:12px}

/* library */
.lib-group{margin-bottom:48px}
.lib-group h3{font-size:19px;color:var(--ink);border-bottom:2px solid var(--gold);padding-bottom:10px;margin-bottom:6px;display:flex;justify-content:space-between;align-items:baseline}
.lib-group h3 .cnt{font-size:12.5px;color:var(--muted);letter-spacing:1px}
.lib-group .hint{color:#8b95a4;font-size:13px;margin:8px 0 14px}
.file{display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:13px 4px;border-bottom:1px dashed var(--line2)}
.file:hover{background:rgba(194,162,74,.05)}
.file .t{color:#2a3446;font-size:15px;flex:1}
.fmts{display:flex;gap:8px;flex-shrink:0}
.fmts a{font-size:12.5px;padding:4px 12px;border-radius:5px;border:1px solid #cdd5e0;color:#41506a;transition:all .15s;letter-spacing:.5px}
.fmts a:hover{transform:translateY(-1px)}
.fmts a.pdf{border-color:#c0533f;color:#b0462f;background:rgba(192,83,63,.06)}
.fmts a.docx{border-color:#2f6fb0;color:#2a63a0;background:rgba(47,111,176,.06)}
.fmts a.md{border-color:#4a5568;color:#3c4759;background:rgba(74,85,104,.06)}
.fmts a.txt{border-color:#4a5568;color:#3c4759}

/* notice */
.notice{background:#fff;border:1px solid var(--line2);border-left:4px solid var(--gold);border-radius:10px;padding:26px 30px}
.notice p{color:#4a5568;font-size:14.5px;margin-bottom:10px}
.notice b{color:var(--ink)}

/* footer */
footer.site{background:#0b1424;color:#c7d2e0;padding:48px 0;margin-top:10px;border-top:1px solid rgba(194,162,74,.3)}
footer.site .cols{display:flex;gap:40px;flex-wrap:wrap;justify-content:space-between}
footer.site a{color:var(--gold2)}
footer.site p{font-size:13px;color:#7f8ea3;margin-top:16px}
footer.site .brandf{font-size:18px;color:#f2efe6;letter-spacing:2px}

@media(max-width:860px){
  .grid,.grid.g2{grid-template-columns:1fr}
  .author{grid-template-columns:1fr}
  .nav ul{display:none}
  .nav ul.open{display:flex;position:absolute;top:64px;left:0;right:0;background:#0e1a2b;flex-direction:column;padding:18px 24px;border-bottom:1px solid rgba(194,162,74,.3);gap:14px}
  .burger{display:flex}
  .hero{padding:80px 0 64px}
  .section{padding:56px 0}
  .file{flex-direction:column;align-items:flex-start;gap:8px}
}