/* AndyZhuCPA / zhucpa.ca — plain static site, GitHub Pages ready */
:root{
  --navy:#0b2a4a; --navy2:#123f63; --blue:#1b5a8a; --ink:#1f2a33; --muted:#5a6b7a;
  --line:#e3e9ef; --bg:#ffffff; --soft:#f4f7fa; --gold:#c8a24a;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);line-height:1.75;background:var(--bg);padding-bottom:64px}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
/* header */
.site-header{background:var(--navy);color:#fff}
.header-inner{display:flex;flex-wrap:wrap;align-items:center;gap:8px 24px;padding:14px 20px}
.brand{color:#fff;font-weight:700;font-size:20px;line-height:1.3}
.brand span{display:block;font-size:13px;font-weight:400;color:#cfe0ee}
.main-nav{margin-left:auto;display:flex;flex-wrap:wrap;gap:4px 18px;align-items:center}
.main-nav a{color:#dbe8f3;font-size:15px;padding:4px 2px}
.main-nav a.active{color:#fff;border-bottom:2px solid var(--gold)}
.main-nav a.lang{border:1px solid #7fa3c0;border-radius:4px;padding:2px 8px;font-size:13px}
/* hero */
.hero{position:relative;color:#fff;background:var(--navy);overflow:hidden}
.hero.has-img{background-size:cover;background-position:center}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,42,74,.82),rgba(11,42,74,.68))}
.hero .wrap{position:relative;padding:64px 20px 56px}
.hero h1{margin:0 0 10px;font-size:34px;line-height:1.3}
.hero .sub{margin:0 0 8px;font-size:18px;color:#e8f1f8}
.hero .fields{margin:14px 0 0;font-size:16px;letter-spacing:2px;color:#ffd98a}
/* sections */
section{padding:36px 0}
section h2{margin:0 0 16px;font-size:24px;color:var(--navy);border-bottom:2px solid var(--gold);padding-bottom:8px}
section h3{margin:24px 0 8px;font-size:19px;color:var(--navy)}
section p{margin:0 0 14px}
.lead{font-size:17px}
.logo-row{margin:8px 0 0}
.logo-row img{max-width:280px}
.two-col{display:flex;gap:28px;align-items:flex-start;flex-wrap:wrap}
.two-col .text{flex:1 1 420px}
.two-col .side{flex:0 0 280px}
.portrait{border-radius:6px;box-shadow:0 2px 12px rgba(11,42,74,.18)}
.btn{display:inline-block;background:var(--navy);color:#fff;padding:10px 22px;border-radius:4px;font-size:16px}
.btn:hover{background:var(--navy2);text-decoration:none}
.btn-outline{display:inline-block;border:1px solid var(--navy);color:var(--navy);padding:9px 20px;border-radius:4px;font-size:15px}
.btn-outline:hover{background:var(--soft);text-decoration:none}
ul.tight{margin:0 0 14px;padding-left:22px}
ul.tight li{margin-bottom:8px}
.contact-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:20px 0}
.card{border:1px solid var(--line);border-radius:6px;padding:18px;background:var(--soft)}
.card h3{margin:0 0 6px;font-size:17px}
.qr{max-width:260px;margin:8px auto}
figure{margin:20px 0}
figure img{border-radius:4px}
figcaption{font-size:13px;color:var(--muted);margin-top:6px;text-align:center}
/* blog */
.post-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.post-card{border:1px solid var(--line);border-radius:6px;overflow:hidden;background:#fff}
.post-card img{width:100%;height:180px;object-fit:cover}
.post-card .body{padding:16px}
.post-card h3{margin:0 0 6px;font-size:18px;line-height:1.4}
.post-card h3 a{color:var(--navy)}
.post-card .meta{font-size:13px;color:var(--muted);margin:0 0 8px}
.post-card p{margin:0;font-size:14.5px;color:#33414d}
.post-meta{font-size:14px;color:var(--muted);margin:0 0 20px}
.post-body img{margin:18px auto}
.post-body h2{margin:28px 0 12px;font-size:22px}
.post-body h3{margin:22px 0 8px;font-size:18px}
/* footer + sticky bar */
.site-footer{border-top:1px solid var(--line);background:var(--soft);padding:22px 0;font-size:14px;color:var(--muted)}
.site-footer .wrap{display:flex;flex-wrap:wrap;gap:4px 24px;justify-content:space-between}
.sticky-bar{position:fixed;left:0;right:0;bottom:0;background:var(--navy);display:flex;z-index:50}
.sticky-bar a{flex:1;text-align:center;color:#fff;padding:13px 4px;font-size:15px;border-left:1px solid rgba(255,255,255,.18)}
.sticky-bar a:first-child{border-left:none}
.sticky-bar a:hover{background:var(--navy2);text-decoration:none}
@media (max-width:640px){
  .hero .wrap{padding:44px 20px 40px}
  .hero h1{font-size:26px}
  .hero .sub{font-size:16px}
  section{padding:26px 0}
  .two-col .side{flex:1 1 100%;max-width:340px}
}