/* Quinn Summit — mountain / summit palette (distinct from tea/harbor author palette) */
:root{
  --ink:#15202b;          /* deep slate */
  --ink-soft:#3a4a5c;
  --mist:#d8dee6;         /* cool mist */
  --cream:#f4f0e6;        /* clean cream paper */
  --paper:#fbf8f1;
  --accent:#3d8b9c;       /* cool alpine teal */
  --accent-dark:#2c6b78;
  --frost:#a8c5ce;
  --summit:#0f1620;
  --radius:14px;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,"Times New Roman",serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--serif);color:var(--ink);background:var(--cream);line-height:1.65;font-size:1.0625rem;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;display:block}
a{color:var(--accent-dark)}
a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.wrap{width:min(100% - 2.5rem, 68rem);margin-inline:auto}
.narrow{width:min(100% - 2.5rem, 42rem);margin-inline:auto}
.skip{position:absolute;left:-999px}
.skip:focus{left:1rem;top:1rem;background:var(--paper);padding:.5rem 1rem;z-index:10;color:var(--ink)}

.topbar{position:absolute;inset:0 0 auto 0;z-index:3}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;padding-block:1rem}
.brand{display:flex;align-items:center;gap:.55rem;color:var(--cream);text-decoration:none;font-family:var(--sans);font-size:1rem;letter-spacing:.04em;font-weight:600}
.brand-mark{width:32px;height:32px;border-radius:8px;background:linear-gradient(145deg,#3d8b9c,#1a3a48);display:grid;place-items:center;flex-shrink:0}
.brand-mark svg{width:18px;height:18px}
.topbar nav{display:none;gap:1.35rem;font-family:var(--sans);font-size:.9rem}
.topbar nav a{color:var(--mist);text-decoration:none}
.topbar nav a:hover{color:#fff;text-decoration:underline}
.topbar-solid{position:relative;background:var(--ink)}
.topbar-solid .brand{color:var(--cream)}

.hero{position:relative;overflow:hidden;color:var(--cream);
  background:radial-gradient(120% 90% at 70% 0%, #2a4554 0%, #1a2e3c 42%, #101820 100%);
  padding:6.5rem 0 4rem}
.hero-inner{position:relative;z-index:2;text-align:center}
.eyebrow{font-family:var(--sans);text-transform:uppercase;letter-spacing:.22em;font-size:.72rem;color:var(--frost);margin:0 0 .9rem}
.hero h1{font-weight:400;font-size:clamp(2.1rem, 8vw, 3.6rem);line-height:1.08;margin:0;letter-spacing:.01em;max-width:18ch;margin-inline:auto}
.hero .series{font-style:italic;font-size:clamp(1.05rem,3.5vw,1.35rem);color:var(--mist);margin:.85rem 0 1.5rem}
.tagline{font-size:clamp(1.05rem,3.8vw,1.25rem);max-width:36ch;margin:0 auto 1.8rem;line-height:1.45;color:#c9d4dc}
.btns{display:flex;flex-wrap:wrap;gap:.8rem;justify-content:center}
.btn{display:inline-block;font-family:var(--sans);font-weight:600;font-size:.95rem;padding:.85rem 1.4rem;border-radius:999px;text-decoration:none;transition:transform .15s ease, background .15s ease, border-color .15s ease}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark)}
.btn-ghost{border:1.5px solid rgba(244,240,230,.55);color:var(--cream)}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-outline{border:1.5px solid var(--accent);color:var(--accent-dark);background:transparent}
.btn-outline:hover{background:#e4f1f4}

section{padding:4.2rem 0}
h2{font-weight:400;font-size:clamp(1.7rem,5.5vw,2.35rem);line-height:1.15;margin:0 0 1rem}
.kicker{font-family:var(--sans);text-transform:uppercase;letter-spacing:.2em;font-size:.72rem;color:var(--accent-dark);margin:0 0 .55rem;font-weight:600}
.center{text-align:center}

.books{background:linear-gradient(180deg,#e8edf1,#d5dde4)}
.book-grid{display:grid;gap:1.6rem}
.book{display:grid;gap:1.6rem;align-items:center;background:var(--paper);border-radius:20px;padding:1.5rem;box-shadow:0 16px 36px -20px rgba(21,32,43,.45)}
.cover-img{display:block;width:min(100%,220px);margin-inline:auto}
.cover-img img{width:100%;height:auto;aspect-ratio:5/8;object-fit:cover;border-radius:3px 8px 8px 3px;box-shadow:-5px 0 0 rgba(15,22,32,.5) inset, 0 16px 30px -12px rgba(0,0,0,.55)}
.badge{display:inline-block;font-family:var(--sans);font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-dark);background:#dceef1;border-radius:999px;padding:.3rem .75rem;margin-bottom:.7rem}
.book h3{font-weight:400;font-size:clamp(1.45rem,4.5vw,1.9rem);margin:0 0 .25rem;line-height:1.15}
.book .sub{font-style:italic;color:var(--ink-soft);margin:0 0 1rem}
.book p{margin:0 0 1rem}
.book-btns{display:flex;flex-wrap:wrap;gap:.7rem}
.coming{margin-top:1.8rem;background:rgba(251,248,241,.7);border:1px dashed #a8b4c0;border-radius:var(--radius);padding:1.1rem 1.25rem;text-align:center;color:var(--ink-soft);font-size:.98rem}
.coming strong{display:block;color:var(--ink);font-weight:400;font-size:1.1rem;margin-bottom:.25rem}

.signup{background:var(--ink);color:var(--cream)}
.signup .kicker{color:var(--frost)}
.signup h2{color:#fff}
.signup p{color:var(--mist);margin:0 0 1.2rem}
.fine{font-family:var(--sans);font-size:.8rem;color:#8fa0ad;margin:.9rem 0 0}
.fine a{color:var(--frost)}

.follow{text-align:center}
.xlink{display:inline-flex;align-items:center;gap:.55rem;font-family:var(--sans);font-weight:600;background:var(--summit);color:#fff;text-decoration:none;border-radius:999px;padding:.85rem 1.35rem;margin-top:.5rem}
.xlink:hover{background:#000}
.xlink svg{width:16px;height:16px}

.page-hero{background:var(--ink);color:var(--cream);padding:5.5rem 0 2.5rem}
.page-hero h1{font-weight:400;font-size:clamp(1.9rem,6vw,2.8rem);line-height:1.1;margin:.4rem 0 0}
.page-hero .sub{font-style:italic;color:var(--mist);margin:.6rem 0 0;font-size:1.15rem}
.product{padding:3rem 0 4rem}
.product-grid{display:grid;gap:2rem;align-items:start}
.blurb p{margin:0 0 1rem}
.blurb ul{margin:0 0 1.2rem;padding-left:1.2rem}
.blurb li{margin-bottom:.45rem}
.cross{margin-top:2.2rem;padding-top:1.6rem;border-top:1px solid #d5dde4;display:flex;flex-wrap:wrap;gap:1rem}
.cross a{font-family:var(--sans);font-weight:600}

.simple{padding:3rem 0 4rem}
.simple h2{font-size:1.45rem;color:var(--accent-dark);margin:2rem 0 .5rem}
.simple ul{padding-left:1.2rem;margin:0 0 1rem}
.simple li{margin-bottom:.35rem}
.small{font-family:var(--sans);font-size:.9rem;color:var(--ink-soft)}

footer{background:var(--summit);color:#8fa0ad;font-family:var(--sans);font-size:.85rem;padding:2.2rem 0;text-align:center}
footer p{margin:.35rem 0}
footer a{color:var(--frost)}
.disclaimer{max-width:40rem;margin:.6rem auto 0;font-size:.78rem;line-height:1.45;color:#7a8b98}

@media (min-width:720px){
  .topbar nav{display:flex}
  .hero{padding-top:7.2rem;padding-bottom:4.5rem}
  .book-grid{gap:2rem}
  .book{grid-template-columns:220px 1fr;padding:2.2rem;gap:2.4rem}
  .cover-img{margin:0}
  .product-grid{grid-template-columns:240px 1fr;gap:2.8rem}
  section{padding:5rem 0}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}}