/* Victor Wong — book site. One stylesheet shared by index.html and every book page. */
:root{
  --bg:#0e1217; --bg-2:#131922; --panel:#161d27; --rule:#25303d;
  --ink:#ece9e3; --body:#c3c9d2; --muted:#8d99a7;
  --gold:#c9a44c; --gold-2:#e0c072; --link:#e0c072;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--body);
  font-family:Georgia,"Times New Roman",serif; font-size:17px; line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
.ui,header,nav,footer,h1,h2,h3,.btn,.kicker,.sub,.brand{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif}
a{color:var(--link); text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px; margin:0 auto; padding:0 24px}
.narrow{max-width:760px}

/* ---------- header ---------- */
header{border-bottom:1px solid var(--rule); position:sticky; top:0; background:rgba(14,18,23,.94);
       backdrop-filter:blur(8px); z-index:10}
.bar{display:flex; align-items:center; justify-content:space-between; gap:20px; height:72px}
.brand{display:block; line-height:0}
.brand img{height:38px; width:auto; display:block}
nav{display:flex; gap:22px; font-size:13.5px; font-weight:600}
nav a{color:var(--body)}
nav a:hover{color:var(--gold-2)}

/* ---------- hero ---------- */
.hero{padding:74px 0 54px; border-bottom:1px solid var(--rule)}
h1{color:var(--ink); font-size:46px; line-height:1.1; letter-spacing:-.025em; margin:0 0 18px; font-weight:800}
.hero p.lede{font-size:19px; color:var(--body); margin:0 0 26px; max-width:640px}
.kicker{font-size:12px; font-weight:700; letter-spacing:.18em; text-transform:uppercase;
        color:var(--gold); margin:0 0 16px}
.cta-row{display:flex; gap:14px; flex-wrap:wrap; align-items:center}
.btn{display:inline-block; font-size:14px; font-weight:700; padding:13px 20px; border-radius:7px;
     background:var(--gold); color:#161208; border:1px solid var(--gold)}
.btn:hover{background:var(--gold-2); text-decoration:none}
.btn.ghost{background:transparent; color:var(--ink); border:1px solid var(--rule)}
.btn.ghost:hover{border-color:var(--gold); color:var(--gold-2)}

/* ---------- books ---------- */
section{padding:60px 0}
h2{color:var(--ink); font-size:27px; letter-spacing:-.015em; margin:0 0 8px; font-weight:800}
.sub{font-size:14.5px; color:var(--muted); margin:0 0 34px}
.grid{display:grid; grid-template-columns:repeat(3,1fr); gap:34px 26px}
.card{display:flex; flex-direction:column; border-top:1px solid var(--rule); padding-top:22px}
.card .coverlink{display:block; line-height:0}
.card img{width:100%; height:auto; display:block; border-radius:4px;
          box-shadow:0 10px 26px rgba(0,0,0,.55); transition:transform .18s ease, box-shadow .18s ease}
.card .coverlink:hover img{transform:translateY(-3px); box-shadow:0 16px 34px rgba(0,0,0,.7)}
.card h3{color:var(--ink); font-size:18.5px; line-height:1.28; margin:18px 0 6px; font-weight:700;
         letter-spacing:-.01em}
.card h3 a{color:var(--ink)}
.card h3 a:hover{color:var(--gold-2); text-decoration:none}
.card .tag{font-size:13px; color:var(--gold); margin:0 0 10px; font-weight:600}
.card p.blurb{font-size:15.5px; margin:0 0 16px; color:var(--body)}
.buy{margin-top:auto; display:flex; gap:8px; flex-wrap:wrap}
.buy a{font-size:12px; font-weight:700; letter-spacing:.02em; padding:7px 11px; border-radius:5px;
       border:1px solid var(--rule); color:var(--body)}
.buy a:hover{border-color:var(--gold); color:var(--gold-2); text-decoration:none}
.readmore{margin:0 0 16px}
.readmore a{font-size:13px; font-weight:700; color:var(--gold-2)}
.readmore a:hover{text-decoration:underline}

/* ---------- panel sections ---------- */
.panel{background:var(--bg-2); border-top:1px solid var(--rule); border-bottom:1px solid var(--rule)}
.cols{display:grid; grid-template-columns:1fr 1fr; gap:40px}
.panelbox{background:var(--panel); border:1px solid var(--rule); border-radius:10px; padding:28px 26px}
.panelbox h3{color:var(--ink); font-size:19px; margin:0 0 12px; font-weight:700}
.fine{font-size:12.5px; color:var(--muted)}
.dl{display:flex; gap:10px; flex-wrap:wrap; margin:0 0 18px}
.dl a{font-size:12.5px; font-weight:700; padding:8px 13px; border-radius:6px;
      border:1px solid var(--rule); color:var(--body)}
.dl a:hover{border-color:var(--gold); color:var(--gold-2); text-decoration:none}

/* ---------- newsletter ---------- */
.signup{display:flex; gap:10px; flex-wrap:wrap; align-items:center; margin:6px 0 12px}
.signup input[type=email]{flex:1 1 260px; min-width:0; padding:13px 14px; font-size:15px;
  background:var(--panel); border:1px solid var(--rule); border-radius:7px; color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif}
.signup input[type=email]:focus{outline:none; border-color:var(--gold)}

/* ---------- book page ---------- */
.bookhead{display:grid; grid-template-columns:290px 1fr; gap:46px; align-items:start;
          padding:52px 0 46px; border-bottom:1px solid var(--rule)}
.bookhead .cover img{width:100%; height:auto; display:block; border-radius:5px;
                     box-shadow:0 14px 34px rgba(0,0,0,.62)}
.bookhead h1{font-size:38px; margin:0 0 10px}
.bookhead .tagline{color:var(--gold); font-weight:600; font-size:15px; margin:0 0 18px}
.bookhead p.lede{font-size:17px; margin:0 0 24px}
.backlink{font-size:13px; font-weight:600; color:var(--muted); display:inline-block; margin:0 0 20px}
.backlink:hover{color:var(--gold-2)}
.meta{display:flex; gap:18px; flex-wrap:wrap; font-size:13px; color:var(--muted); margin:22px 0 0}
.toc{columns:2; column-gap:38px; font-size:14.5px; margin:0}
.toc a{display:block; padding:5px 0; color:var(--body); break-inside:avoid}
.toc a:hover{color:var(--gold-2); text-decoration:none}
.toc a span{color:var(--gold); font-size:12.5px; font-weight:700; margin-right:9px}
.parthead{margin:54px 0 22px; padding-top:20px; border-top:2px solid var(--gold);
          font-size:12.5px; font-weight:800; letter-spacing:.16em; text-transform:uppercase; color:var(--gold)}
.parthead:first-of-type{margin-top:0}
.chapter{border-top:1px solid var(--rule); padding:26px 0 8px;
         display:grid; grid-template-columns:62px 1fr; gap:18px}
.chapter .num{font-size:13px; font-weight:800; letter-spacing:.08em; color:var(--gold); padding-top:5px}
.chapter h3{margin:0 0 10px; font-size:19.5px; color:var(--ink); line-height:1.3; font-weight:700}
.chapter p{margin:0; font-size:16px; color:var(--body)}
.endcta{margin:52px 0 0; padding:30px 28px; background:var(--panel);
        border:1px solid var(--rule); border-radius:10px}
.endcta h3{margin:0 0 10px; color:var(--ink); font-size:20px; font-weight:700}
.endcta p{margin:0 0 20px}

/* ---------- figures, charts, tables inside a chapter ---------- */
.fig{margin:22px 0 4px; padding:0}
.fig img{width:100%; height:auto; display:block; border-radius:6px;
         border:1px solid var(--rule); background:var(--bg-2)}
.fig figcaption{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
                font-size:12.5px; color:var(--muted); margin:9px 0 0; line-height:1.5}
.chart{margin:24px 0 4px; padding:20px 22px 14px; background:var(--panel);
       border:1px solid var(--rule); border-radius:8px}
.chart .ctitle{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
               font-size:13px; font-weight:700; color:var(--ink); margin:0 0 3px}
.chart .csrc{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
             font-size:11.5px; color:var(--muted); margin:0 0 14px}
.chart-svg{display:block; overflow:visible}
.tblwrap{margin:24px 0 6px; overflow-x:auto}
.tblcap{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
        font-size:12.5px; font-weight:700; color:var(--gold); margin:0 0 9px}
table.dt{width:100%; border-collapse:collapse; font-size:14px;
         font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif}
table.dt th{text-align:left; padding:9px 12px; background:var(--panel); color:var(--ink);
            font-weight:700; font-size:12.5px; border-bottom:1px solid var(--rule);
            white-space:nowrap}
table.dt td{padding:9px 12px; border-bottom:1px solid var(--rule); color:var(--body);
            vertical-align:top; line-height:1.5}
table.dt tr:last-child td{border-bottom:none}
.tblsrc{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
        font-size:11.5px; color:var(--muted); margin:9px 0 0; line-height:1.5}

footer{border-top:1px solid var(--rule); padding:34px 0 46px; font-size:13px; color:var(--muted)}
footer .frow{display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap}
footer a{color:var(--muted)}
footer a:hover{color:var(--gold-2)}

@media (max-width:900px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .cols{grid-template-columns:1fr}
  .bookhead{grid-template-columns:1fr; gap:28px}
  .bookhead .cover{max-width:270px}
  .toc{columns:1}
}
@media (max-width:560px){
  h1{font-size:33px} .hero{padding:52px 0 40px}
  .grid{grid-template-columns:1fr; gap:30px}
  nav{display:none}
  .brand img{height:30px}
  .bookhead h1{font-size:28px}
  .chapter{grid-template-columns:1fr; gap:4px}
  .chapter .num{padding-top:0}
}