:root{
  --navy:#13476a; --deep:#0c2f48; --ocean:#4497bc; --sea:#6bafcd; --sky:#87c7df;
  --mist:#c3dfe4; --foam:#eaf1eb; --sand:#f6f4ee; --ink:#1d2a33; --muted:#5a6b76;
  --serif: Georgia, "Iowan Old Style", "Palatino Linotype", "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--sand);color:var(--ink);font:17px/1.7 var(--sans);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--navy)}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:#fff;padding:8px 12px;z-index:9}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
.narrow{max-width:640px;text-align:center}
h1,h2{font-family:var(--serif);font-weight:normal;line-height:1.15;color:var(--deep)}
h2{font-size:clamp(28px,4vw,40px);margin:0 0 .4em}
.eyebrow{text-transform:uppercase;letter-spacing:.22em;font-size:12px;color:var(--mist);margin:0 0 10px}
.eyebrow.dark{color:var(--ocean)}

/* hero */
.hero{position:relative;color:var(--foam);
  background:radial-gradient(120% 90% at 80% 0%, rgba(135,199,223,.35), transparent 60%),
             linear-gradient(180deg,var(--deep) 0%,var(--navy) 55%,#2c6f98 100%);
  padding-bottom:110px;overflow:hidden}
.nav{display:flex;justify-content:space-between;align-items:center;max-width:1080px;margin:0 auto;padding:18px 24px}
.brand{display:flex;gap:10px;align-items:center;color:var(--foam);text-decoration:none;font-family:var(--serif);font-size:18px}
.nav ul{display:flex;gap:22px;list-style:none;margin:0;padding:0}
.nav ul a{color:var(--mist);text-decoration:none;font-size:14px;letter-spacing:.04em}
.nav ul a:hover{color:#fff}
.hero-inner{max-width:1080px;margin:0 auto;padding:90px 24px 40px;text-align:center}
.hero h1{color:#fff;font-size:clamp(44px,8vw,88px);margin:0;letter-spacing:.01em}
.tagline{font-family:var(--serif);font-style:italic;font-size:clamp(19px,2.6vw,26px);color:var(--mist);margin:14px 0 34px}
.waves{position:absolute;bottom:-1px;left:0;width:100%;height:120px}

/* buttons */
.btn{display:inline-block;padding:12px 22px;border-radius:999px;background:var(--navy);color:#fff;text-decoration:none;font-size:15px;border:1.5px solid var(--navy);transition:.2s;cursor:pointer;font-family:var(--sans)}
.btn:hover{background:var(--deep);border-color:var(--deep)}
.btn-light{background:var(--foam);color:var(--deep);border-color:var(--foam)}
.btn-light:hover{background:#fff;color:var(--deep)}
.btn-outline{background:transparent;color:var(--navy)}
.btn-outline:hover{background:var(--navy);color:#fff}
.btn[disabled]{opacity:.55;cursor:not-allowed}

/* sections */
.section{padding:88px 0}
.about-grid{display:grid;grid-template-columns:260px 1fr;gap:56px;align-items:start}
.portrait img{width:240px;border-radius:50%;box-shadow:0 18px 40px -18px rgba(12,47,72,.55)}
.prose p{margin:0 0 1em}
.lede{font-family:var(--serif);font-size:22px;line-height:1.5;color:var(--deep)}
.book{background:linear-gradient(180deg,var(--foam),#dcebeb)}
.book-grid{display:grid;grid-template-columns:360px 1fr;gap:64px;align-items:start}
.cover img{border-radius:4px;box-shadow:0 30px 60px -25px rgba(12,47,72,.6),0 8px 18px -10px rgba(12,47,72,.4)}
.subtitle{font-family:var(--serif);font-style:italic;color:var(--muted);font-size:19px;margin-top:-6px}
.questions{list-style:none;padding:0;margin:0 0 1.2em}
.questions li{position:relative;padding:8px 0 8px 34px;border-bottom:1px solid rgba(19,71,106,.12);font-family:var(--serif);font-size:18px}
.questions li::before{content:"";position:absolute;left:0;top:18px;width:20px;height:8px;
  background:no-repeat center/contain url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 40 12'%3E%3Cpath d='M0 6 q5 -6 10 0 t10 0 t10 0 t10 0' fill='none' stroke='%234497bc' stroke-width='2.5'/%3E%3C/svg%3E")}
.closer{font-family:var(--serif);font-style:italic;color:var(--deep)}
.buy{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.note{font-size:13px;color:var(--muted);margin-top:10px}

.interlude{position:relative;max-height:460px;overflow:hidden;background:var(--deep)}
.interlude img{width:100%;height:460px;object-fit:cover;object-position:center 40%;opacity:.75}
.interlude blockquote{position:absolute;inset:auto 0 40px 0;margin:0 auto;max-width:760px;padding:0 24px;text-align:center;
  color:#fff;font-family:var(--serif);font-style:italic;font-size:clamp(20px,3vw,30px);text-shadow:0 2px 18px rgba(0,0,0,.55)}

.signup{display:flex;gap:10px;justify-content:center;margin:26px 0}
.signup input{flex:1;max-width:340px;padding:12px 18px;border-radius:999px;border:1.5px solid var(--mist);font-size:15px;background:#fff}
.care{font-size:13px;color:var(--muted);max-width:520px;margin:30px auto 0}

.footer{background:var(--deep);color:var(--mist);padding:28px 0;font-size:14px}
.foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.footer p{margin:0}.footer a{color:var(--foam)}

@media (max-width:760px){
  .nav ul{gap:14px}
  .hero-inner{padding-top:56px}
  .about-grid,.book-grid{grid-template-columns:1fr;gap:32px}
  .portrait{display:flex;justify-content:center}
  .portrait img{width:180px}
  .cover{max-width:300px;margin:0 auto}
  .section{padding:64px 0}
  .signup{flex-direction:column;align-items:stretch}
  .signup input{max-width:none}
  .interlude img{height:320px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}