@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Libre+Caslon+Display&display=swap');

:root{
  --ink:#252b31;
  --muted:#626b73;
  --paper:#f5f1e8;
  --panel:#fffdf8;
  --blue:#365f86;
  --blue-dark:#203f5c;
  --blue-pale:#e6eef4;
  --gold:#b89b5b;
  --line:#d9d3c8;
  --shadow:0 18px 50px rgba(31,47,59,.11);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:
    radial-gradient(circle at 92% 5%,rgba(54,95,134,.10),transparent 30rem),
    var(--paper);
  color:var(--ink);
  font-family:"DM Sans",system-ui,sans-serif;
  line-height:1.72;
}
img{max-width:100%;display:block}
a{color:inherit}

.site-header{
  position:sticky;top:14px;z-index:20;
  width:min(1240px,calc(100% - 36px));
  margin:16px auto 0;padding:13px 18px;
  display:flex;align-items:center;justify-content:space-between;
  background:rgba(255,253,248,.88);backdrop-filter:blur(15px);
  border:1px solid var(--line);border-radius:999px;
  box-shadow:0 8px 25px rgba(31,47,59,.08);
}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:700}
.brand-mark{
  width:64px;height:42px;object-fit:contain;flex:0 0 auto;
}
nav{display:flex;gap:24px}
nav a{text-decoration:none;color:var(--muted);font-size:.9rem;font-weight:700}
nav a:hover{color:var(--blue)}

.hero{
  width:min(1240px,calc(100% - 36px));
  min-height:680px;margin:34px auto 110px;padding:clamp(40px,7vw,84px);
  display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;
  background:linear-gradient(135deg,#fffdf8,#edf3f7);
  border:1px solid var(--line);border-radius:38px;box-shadow:var(--shadow);
}
.eyebrow{
  margin:0 0 14px;color:var(--blue);font-size:.78rem;letter-spacing:.16em;
  text-transform:uppercase;font-weight:700;
}
.eyebrow.light{color:#bdd2e2}
h1,h2,h3,h4{
  margin:0;font-family:"Libre Caslon Display",Georgia,serif;font-weight:400;
  letter-spacing:-.035em;line-height:1;
}
h1{font-size:clamp(4.6rem,8vw,8.5rem)}
h2{font-size:clamp(3.2rem,5vw,5.4rem)}
h3{font-size:clamp(2.7rem,4vw,4.2rem)}
h4{font-size:2rem}
.hero-intro{max-width:640px;margin:27px 0;color:var(--muted);font-size:1.2rem}
.button{
  display:inline-flex;padding:14px 22px;border-radius:999px;background:var(--blue-dark);
  color:white;text-decoration:none;font-weight:700;
}
.hero-books{position:relative;min-height:520px;display:grid;place-items:center}
.hero-books::after{
  content:"";position:absolute;z-index:0;left:14%;right:8%;bottom:13%;height:9%;
  border-radius:50%;background:rgba(28,38,46,.22);filter:blur(18px);transform:skewX(-8deg);
}
.hero-book-group{
  position:relative;z-index:1;width:112%;max-width:none;height:auto;display:block;
  filter:drop-shadow(0 7px 6px rgba(28,38,46,.24)) drop-shadow(0 24px 20px rgba(28,38,46,.20));
}

.section{width:min(1160px,calc(100% - 36px));margin:0 auto 120px}
.section-heading{max-width:900px;margin-bottom:58px}
.section-heading .lede{max-width:790px;color:var(--muted);font-size:1.08rem}

.volume{
  display:grid;grid-template-columns:320px 1fr;gap:58px;
  margin:0 0 54px;padding:48px;
  background:var(--panel);border:1px solid var(--line);border-radius:30px;
  box-shadow:0 13px 38px rgba(31,47,59,.07);
}
.volume-aside{align-self:start;position:sticky;top:100px}
.cover-view{
  width:min(100%,290px);margin:0 auto 24px;padding:12px;background:#eef3f6;
  border:1px solid #d7e0e6;border-radius:18px;box-shadow:0 16px 30px rgba(31,47,59,.13);
  color:var(--muted);text-align:center;
}
.cover-view img{width:100%;height:auto;display:block;border-radius:9px}
.cover-view figcaption{
  margin-top:10px;font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
}
.landscape-aside .cover-view{width:100%}
.sample-button{
  width:100%;margin-top:18px;padding:12px;border:1px solid var(--line);border-radius:999px;
  background:#f0ede6;color:#7b7a76;font:inherit;font-weight:700;
}
.volume-number{
  margin:0 0 10px;color:var(--blue);font-size:.82rem;font-weight:700;
  letter-spacing:.13em;text-transform:uppercase;
}
.volume-body>p:not(.volume-number){font-size:1.05rem;color:#4e565d}

.reviews{margin-top:42px}
.reviews h4{margin-bottom:18px}
details{
  background:#fbfaf6;border:1px solid var(--line);border-radius:18px;margin:12px 0;overflow:hidden;
}
summary{
  cursor:pointer;padding:18px 48px 18px 20px;font-weight:700;color:var(--blue-dark);
  list-style:none;position:relative;
}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:20px;font-size:1.3rem;top:14px}
details[open] summary::after{content:"–"}
.review-content{padding:0 20px 20px;color:var(--muted)}
.review-content p:last-child{margin-bottom:0}

.series-review{
  margin:0 0 120px;padding:105px 20px;background:var(--blue-dark);color:#fff;
}
.series-review-inner{width:min(920px,100%);margin:auto;text-align:center}
.series-review blockquote{
  margin:0;font-family:"Libre Caslon Display",Georgia,serif;font-size:clamp(2.8rem,5vw,5.2rem);
  line-height:1.05;letter-spacing:-.035em;
}
.attribution{margin-top:25px;color:#c9dae7}
.series-details{margin:35px auto 0;max-width:760px;text-align:left;background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.18)}
.series-details summary{color:#fff}
.series-details>div{padding:0 24px 24px;color:#dce7ee}

.link-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.link-grid a{
  min-height:178px;display:flex;flex-direction:column;align-items:center;gap:8px;padding:18px 12px 14px;
  text-decoration:none;background:var(--panel);border:1px solid var(--line);border-radius:16px;
  text-align:center;box-shadow:0 8px 20px rgba(31,47,59,.055);transition:transform .2s ease,border-color .2s ease;
}
.link-grid a:hover{transform:translateY(-4px);border-color:var(--blue)}
.link-grid strong{min-height:42px;display:grid;place-items:center;color:var(--ink);line-height:1.15}
.link-grid small{margin-top:auto;color:var(--blue);text-decoration:underline}
.logo-frame{
  width:82px;height:72px;display:grid;place-items:center;overflow:hidden;
  border:1px solid #d7cec0;border-radius:9px;background:#fff;box-shadow:0 5px 13px rgba(31,47,59,.08);
}
.logo-frame img{width:88%;height:88%;object-fit:contain}
.logo-frame.logo-wide{width:132px}
.logo-frame.logo-wide img{width:94%;height:82%}
.logo-frame.register-logo{background:#f7f2e8}
.logo-frame.register-logo img{width:94%;height:94%}
.logo-frame.nmm-logo{width:140px}
.logo-frame.nmm-logo img{width:95%;height:90%}
.logo-frame.jaguar-logo{background:#000}
.logo-frame.jaguar-logo img{width:100%;height:100%}
.logo-frame img[alt="The Lanchester Trust logo"]{width:96%;height:90%}
.logo-frame img[alt="Lanchester Interactive Archive logo"]{width:97%;height:84%}
.availability-note{
  max-width:900px;margin:22px auto 0;color:var(--muted);font-size:.82rem;font-style:italic;text-align:center;
}

footer{
  width:min(1240px,calc(100% - 36px));margin:0 auto 24px;padding:28px 8px;
  display:block;border-top:1px solid var(--line);
  color:var(--muted);font-size:.85rem;
}
footer p{margin:0;text-align:center}

@media(max-width:900px){
  nav{display:none}
  .hero{grid-template-columns:1fr;padding:45px 28px}
  .hero-books{min-height:470px}
  .volume{grid-template-columns:1fr;padding:30px 22px}
  .volume-aside{position:static}
  .link-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:560px){
  h1{font-size:4.2rem}
  .hero-books{min-height:370px}
  .hero-book-group{width:116%}
  .link-grid{grid-template-columns:1fr}
  footer p{text-align:left}
}


.sample-button.active{
  background:var(--blue-dark);
  color:#fff;
  border-color:var(--blue-dark);
  cursor:pointer;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.sample-button.active:hover{
  transform:translateY(-2px);
  box-shadow:0 10px 22px rgba(31,47,59,.18);
  background:var(--blue);
}
.lightbox{
  position:fixed;
  inset:0;
  z-index:100;
  display:none;
  align-items:center;
  justify-content:center;
  padding:24px;
  background:rgba(18,25,31,.86);
  backdrop-filter:blur(10px);
}
.lightbox.open{display:flex}
.lightbox figure{
  position:relative;
  width:min(1400px,96vw);
  max-height:92vh;
  margin:0;
  padding:20px;
  border-radius:22px;
  background:#f8f5ef;
  box-shadow:0 28px 80px rgba(0,0,0,.35);
}
.lightbox img{
  width:100%;
  max-height:78vh;
  object-fit:contain;
  border-radius:12px;
  background:#fff;
}
.lightbox figcaption{
  margin-top:12px;
  text-align:center;
  color:var(--muted);
  font-size:.9rem;
}
.lightbox-close{
  position:absolute;
  top:18px;
  right:22px;
  z-index:2;
  width:44px;
  height:44px;
  border:0;
  border-radius:50%;
  background:#fff;
  color:var(--blue-dark);
  font-size:1.8rem;
  line-height:1;
  cursor:pointer;
  box-shadow:0 8px 25px rgba(0,0,0,.2);
}
.no-scroll{overflow:hidden}