:root{
  --bg:#ffffff;
  --ink:#0f0f10;
  --muted:#5e636e;
  --line:rgba(15,15,16,.10);
  --soft:#f5f5f3;
  --card:#ffffff;
  --shadow:0 18px 45px rgba(15,15,16,.08);
  --radius:18px;
  --max:1180px;
  --serif:"Playfair Display", Georgia, serif;
  --sans:Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

a{color:inherit}
img{max-width:100%;display:block}
.container{width:min(var(--max),92vw);margin:0 auto}

.skip{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip:focus{left:16px;top:16px;width:auto;height:auto;padding:10px 12px;background:#fff;border:1px solid var(--line);border-radius:12px;z-index:9999}

header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  min-height:110px;
}

.navbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:14px 0;
  min-height:110px;
}

.brand{
  display:flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
  flex:0 0 auto;
  min-width:0;
}

.mark{
  width:auto;
  height:auto;
  border:none;
  border-radius:0;
  display:flex;
  align-items:center;
  justify-content:center;
  background:transparent;
  flex:0 0 auto;
}

.mark.mark-img{padding:0}
.mark.mark-img img{height:90px;width:auto;object-fit:contain}

.brand-name{
  display:inline-block;
  font-family:"Cinzel", var(--serif);
  font-size:18px;
  line-height:1.1;
  letter-spacing:1.8px;
  color:#111;
  font-weight:600;
  white-space:nowrap;
}

nav ul{
  list-style:none;
  display:flex;
  gap:18px;
  margin:0;
  padding:0;
  align-items:center;
}

nav a{text-decoration:none;font-size:13px;color:var(--ink);opacity:.86;padding:10px 10px;border-radius:999px}
nav a:hover{opacity:1;background:rgba(15,15,16,.04)}
nav a.active{opacity:1;background:rgba(15,15,16,.07)}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:10px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  font-size:13px;
  text-decoration:none;
  box-shadow:0 1px 0 rgba(15,15,16,.03);
}
.btn:hover{box-shadow:var(--shadow)}
.btn.primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn.ghost{background:transparent}

.hamburger{
  display:none;
  border:1px solid var(--line);
  background:#fff;
  border-radius:12px;
  padding:10px 12px;
  cursor:pointer;
  font-size:18px;
  margin-left:auto;
}

.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff}
.mobile-panel .panel{padding:14px 0 16px 0;display:grid;gap:12px}
.mobile-panel a{display:block;text-decoration:none;padding:12px;border-radius:14px;border:1px solid var(--line);background:#fff;font-size:14px}
.mobile-panel a:hover{background:var(--soft)}
.mobile-panel .panel-actions{display:flex;gap:10px;flex-wrap:wrap}

.hero{
  padding:64px 0 44px 0;
  background:
    radial-gradient(1100px 420px at 15% 0%, rgba(15,15,16,.06), transparent 60%),
    radial-gradient(900px 380px at 88% 10%, rgba(15,15,16,.05), transparent 65%),
    linear-gradient(180deg, var(--soft), #fff 60%);
}

.kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
  border:1px solid var(--line);
  border-radius:999px;
  padding:8px 12px;
  background:#fff;
}
.kicker .dot{width:8px;height:8px;border-radius:999px;background:var(--ink);opacity:.7}

.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}

h1{font-family:var(--serif);font-size:52px;line-height:1.04;margin:14px 0;letter-spacing:-0.02em}
.lead{font-size:17px;color:#26272b;max-width:64ch}
.hero-actions{margin-top:18px;display:flex;gap:12px;flex-wrap:wrap}

.hero-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:18px;
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  gap:14px;
}
.hero-card h3{font-family:var(--serif);margin:0;font-size:18px}
.hero-card p{margin:6px 0 0 0;color:var(--muted);font-size:14px}

.meta{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.meta .item{border:1px solid var(--line);border-radius:14px;padding:12px;background:#fff}
.meta strong{display:block;font-size:16px}
.meta span{display:block;margin-top:2px;color:var(--muted);font-size:12px}

.note{color:var(--muted);font-size:13px;margin-top:10px}
section{padding:74px 0}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:26px}
.section-head h2{font-family:var(--serif);font-size:34px;margin:0;letter-spacing:-0.01em}
.section-head h3{font-size:24px;margin:0 0 10px 0}
.section-head p{margin:0;color:var(--muted);font-size:14px;max-width:78ch}

.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:0 1px 0 rgba(15,15,16,.03)}
.card:hover{box-shadow:var(--shadow)}
.card h3{font-family:var(--serif);margin:0 0 6px 0;font-size:18px}
.card p{margin:0;color:var(--muted);font-size:14px}
.col-12{grid-column:span 12}
.col-8{grid-column:span 8}
.col-6{grid-column:span 6}
.col-4{grid-column:span 4}

.book{display:flex;flex-direction:column;gap:12px;min-height:190px}
.badge{display:inline-flex;align-items:center;padding:7px 10px;border:1px solid var(--line);border-radius:999px;font-size:12px;color:var(--muted);background:#fff;width:max-content}
.book .title,.title{font-weight:600;font-size:15px}
.book .desc,.desc{color:var(--muted);font-size:13px;margin:0}
.hr{height:1px;background:var(--line);margin:14px 0}

.timeline{border:1px solid var(--line);border-radius:var(--radius);padding:18px;background:#fff}
.t-item{display:grid;grid-template-columns:96px 1fr;gap:14px;padding:12px 0;border-bottom:1px solid var(--line)}
.t-item:last-child{border-bottom:none}
.t-item .year{font-weight:600;font-size:14px}
.t-item p{margin:0;color:var(--muted);font-size:14px}

.form{display:grid;gap:12px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;padding:12px;border:1px solid var(--line);border-radius:14px;font-family:var(--sans);font-size:14px;background:#fff}
.field textarea{min-height:140px;resize:vertical}

footer{border-top:1px solid var(--line);padding:26px 0;color:var(--muted);font-size:13px}
.footer-grid{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:flex-start}
.footer-links{display:flex;gap:14px;flex-wrap:wrap}
.footer-links a{text-decoration:none;color:var(--muted)}
.footer-links a:hover{color:var(--ink)}

.book-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  align-items:start;
}

.book-cover-card{
  display:flex;
  flex-direction:column;
  gap:14px;
  height:100%;
  min-width:0;
  overflow:hidden;
}

.book-cover{
  width:100%;
  height:auto;
  aspect-ratio:auto;
  object-fit:contain;
  border-radius:14px;
  border:1px solid var(--line);
  background:#f8f8f8;
}

@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr}
  h1{font-size:42px}
  .book-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .col-6,.col-4,.col-8{grid-column:span 12}
  section{padding:64px 0}
}

@media (max-width:860px){
  nav ul{display:none}
  .hamburger{display:inline-flex;align-items:center;justify-content:center}
}

@media (max-width:700px){
  .brand{gap:8px}
  .brand-name{font-size:14px;letter-spacing:1.1px}
  .mark.mark-img img{height:72px}
}

@media (max-width:640px){
  .book-grid{grid-template-columns:1fr;gap:18px}
  .book-cover-card{padding:16px}
  .book-cover{
    width:100%;
    max-height:none;
    height:auto;
    object-fit:contain;
  }
}

@media (max-width:520px){
  h1{font-size:34px}
  .meta{grid-template-columns:1fr}
  .container{width:min(var(--max),94vw)}
  .hero{padding:48px 0 34px 0}
  .section-head h2{font-size:30px}
  .section-head h3{font-size:20px}
}