:root{
  --navy:#082a4e; --navy2:#0a3d6a; --gold:#c9902e; --gold2:#e1b65c;
  --cream:#fbf8f2; --paper:#fffdf9; --ink:#152840; --muted:#607082;
  --line:#e9dfcf; --shadow:0 20px 55px rgba(13,35,57,.13);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--cream);color:var(--ink);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}
h1,h2,h3,.serif{font-family:Georgia,"Times New Roman",serif;font-weight:500}
a{color:inherit}
.container{width:min(1180px,calc(100% - 40px));margin:auto}
.topbar{background:#061f3b;color:#fff;font-size:13px;padding:8px 0;text-align:center}
header{position:sticky;top:0;z-index:20;background:rgba(251,248,242,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(13,35,57,.08)}
.nav{height:86px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand img{width:78px;height:78px;object-fit:contain}
.brand-text{font-family:Georgia,serif;letter-spacing:.08em;font-size:18px}
nav{display:flex;gap:28px;align-items:center}
nav a{text-decoration:none;font-size:14px;font-weight:650;letter-spacing:.04em}
nav a:hover{color:var(--gold)}
.lang{border:1px solid var(--line);border-radius:99px;padding:7px 10px;background:#fff;cursor:pointer;font-weight:700}
.menu-btn{display:none;border:0;background:transparent;font-size:28px}

.hero{position:relative;min-height:650px;background:
linear-gradient(90deg,rgba(4,32,62,.98) 0%,rgba(6,47,84,.94) 37%,rgba(7,61,101,.28) 61%,rgba(5,32,56,.06) 100%),
url('assets/bo-hero.webp') center right/cover no-repeat;color:#fff;overflow:hidden}
.hero:after{content:"";position:absolute;left:-5%;right:-5%;bottom:-58px;height:110px;background:var(--cream);border-radius:50% 50% 0 0/60% 60% 0 0}
.hero-content{position:relative;z-index:1;padding:110px 0 130px;max-width:580px}
.kicker{text-transform:uppercase;letter-spacing:.17em;font-size:12px;color:var(--gold2);font-weight:800}
.hero h1{font-size:clamp(43px,5.6vw,76px);line-height:1.02;margin:14px 0 24px}
.hero h1 span{color:var(--gold2)}
.hero p{max-width:530px;font-size:18px;color:#eff7ff;margin:0 0 30px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:var(--gold);color:#fff;text-decoration:none;border-radius:8px;padding:14px 22px;font-weight:800;border:1px solid transparent;transition:.2s ease}
.btn:hover{transform:translateY(-2px);filter:brightness(1.04)}
.btn.secondary{background:transparent;border-color:rgba(255,255,255,.55)}
.section{padding:86px 0}
.section-title{font-size:44px;line-height:1.08;margin:8px 0 18px}
.lead{font-size:18px;color:var(--muted);max-width:720px}

.book-grid{display:grid;grid-template-columns:minmax(250px,380px) 1fr;gap:72px;align-items:center}
.book-stage{display:flex;justify-content:center;perspective:1200px}
.softcover{position:relative;width:min(310px,78vw);filter:drop-shadow(0 28px 28px rgba(6,28,50,.20));transform:rotateY(-3deg)}
.softcover img{display:block;width:100%;border-radius:3px 5px 5px 3px}
.softcover:before{content:"";position:absolute;top:2%;bottom:2%;left:-4px;width:4px;background:linear-gradient(#d6d9dc,#8b97a2,#d3d9dc);border-radius:2px 0 0 2px}
/* Intentionally thin edge: softcover, not hardcover */
.softcover:after{content:"";position:absolute;left:4px;right:1px;bottom:-3px;height:3px;background:linear-gradient(90deg,#e9e6df,#b8b5af);border-radius:0 0 4px 4px}

.book-meta{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0}
.pill{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 12px;font-size:14px}
.price{font-family:Georgia,serif;font-size:38px;margin:18px 0 2px}
.small{font-size:13px;color:var(--muted)}
.amazon{margin-top:20px;background:#d69b31}
.notice{margin-top:14px;font-size:13px;color:var(--muted)}

.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:46px}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:0 8px 30px rgba(18,39,63,.05)}
.card h3{font-size:23px;margin:0 0 8px}

.about{background:linear-gradient(135deg,#eef7fb,#f8fbfc 55%,#f8f0dd)}
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.quote{background:#fff;border-left:4px solid var(--gold);padding:28px;border-radius:0 14px 14px 0;box-shadow:var(--shadow)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.contact-box{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px}
footer{background:#061f3b;color:#e9f1f8;padding:54px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:45px}
footer a{color:#e9f1f8;text-decoration:none}
footer a:hover{color:var(--gold2)}
.footer-title{font-weight:800;margin-bottom:12px}
.legal{margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#b9c8d6}

.page{padding:70px 0 90px}
.page h1{font-size:48px}
.page h2{margin-top:34px}
.legal-copy{max-width:850px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:32px}

@media(max-width:860px){
  .topbar{font-size:12px}
  .nav{height:72px}
  .brand img{width:58px;height:58px}
  .brand-text{display:none}
  .menu-btn{display:block}
  nav{display:none;position:absolute;left:0;right:0;top:72px;background:#fff;padding:22px 20px;border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start}
  nav.open{display:flex}
  .hero{min-height:700px;background:
    linear-gradient(180deg,rgba(4,32,62,.94) 0%,rgba(6,43,78,.80) 46%,rgba(6,43,78,.18) 72%,rgba(5,32,56,.18) 100%),
    url('assets/bo-hero.webp') 72% center/cover no-repeat}
  .hero-content{padding:80px 0 210px;max-width:100%}
  .hero h1{font-size:48px}
  .book-grid,.about-grid,.contact-grid{grid-template-columns:1fr}
  .book-grid{gap:38px}
  .features{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:62px 0}
}
@media(max-width:520px){
  .container{width:min(100% - 28px,1180px)}
  .hero h1{font-size:40px}
  .hero p{font-size:16px}
  .section-title{font-size:36px}
  .softcover{width:235px}
}

.skip-link{position:absolute;left:-9999px;top:auto}
.skip-link:focus{left:14px;top:14px;z-index:1000;background:#fff;color:#082a4e;padding:10px 14px;border-radius:6px}
:focus-visible{outline:3px solid #e1b65c;outline-offset:3px}
.lang{text-decoration:none;display:inline-flex;align-items:center}
.seo-copy{max-width:840px;margin:0 auto}
.seo-copy h2{font-size:clamp(32px,4vw,44px);line-height:1.12}
.seo-copy p{color:var(--muted);font-size:17px}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:20px}


/* === HERO REDESIGN: separate underwater stage + undistorted softcover === */
.hero.hero-split{
  position:relative;
  min-height:680px;
  overflow:hidden;
  background:
    radial-gradient(circle at 78% 18%, rgba(125,216,244,.34), transparent 24%),
    radial-gradient(circle at 88% 70%, rgba(14,155,170,.26), transparent 26%),
    linear-gradient(135deg,#062848 0%,#0a4d78 48%,#0f7897 100%);
}
.hero.hero-split:after{
  content:"";
  position:absolute;
  left:-5%; right:-5%; bottom:-56px;
  height:108px;
  background:var(--cream);
  border-radius:50% 50% 0 0/60% 60% 0 0;
  z-index:3;
}
.hero-split-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);
  gap:64px;
  align-items:center;
  min-height:680px;
  padding:84px 0 120px;
}
.hero-copy{
  max-width:620px;
}
.hero-copy h1{
  font-size:clamp(44px,5.4vw,76px);
  line-height:1.02;
  margin:14px 0 24px;
}
.hero-copy p{
  max-width:560px;
  font-size:18px;
  color:#edf8ff;
  margin:0 0 28px;
}
.hero-actions{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}
.hero-book{
  display:flex;
  align-items:center;
  justify-content:center;
}
.hero-book-stage{
  position:relative;
  width:min(420px,38vw);
  aspect-ratio: 677 / 708;
  display:flex;
  align-items:center;
  justify-content:center;
}
.hero-book-stage:before{
  content:"";
  position:absolute;
  width:82%;
  height:18%;
  bottom:4%;
  border-radius:50%;
  background:rgba(0,18,35,.28);
  filter:blur(22px);
  transform:translateY(18px);
}
.hero-softcover{
  position:relative;
  width:100%;
  transform:rotateY(-7deg) rotateZ(1.2deg);
  transform-origin:center;
  filter:drop-shadow(0 28px 34px rgba(3,24,44,.34));
  transition:transform .45s ease, filter .45s ease;
}
.hero-softcover:hover{
  transform:rotateY(-2deg) rotateZ(0deg) translateY(-6px);
  filter:drop-shadow(0 34px 44px rgba(3,24,44,.40));
}
.hero-softcover img{
  display:block;
  width:100%;
  height:auto;
  object-fit:contain;
  border-radius:3px 5px 5px 3px;
}
.hero-softcover:before{
  content:"";
  position:absolute;
  left:-3px; top:1.5%; bottom:1.5%;
  width:3px;
  border-radius:2px 0 0 2px;
  background:linear-gradient(#d5d9dd,#8d989f,#d4d8db);
}
.hero-softcover:after{
  content:"";
  position:absolute;
  left:3px; right:1px; bottom:-2px;
  height:2px;
  background:linear-gradient(90deg,#ece9e1,#bcb7ad);
  border-radius:0 0 3px 3px;
}
.hero-water{
  position:absolute;
  inset:0;
  z-index:1;
  pointer-events:none;
  overflow:hidden;
}
.hero-water:before{
  content:"";
  position:absolute;
  width:46%;
  height:40%;
  right:0;
  bottom:-10%;
  background:
    radial-gradient(circle at 20% 30%, rgba(21,131,117,.55) 0 10%, transparent 11%),
    radial-gradient(circle at 52% 62%, rgba(5,88,91,.45) 0 15%, transparent 16%),
    radial-gradient(circle at 82% 38%, rgba(31,150,128,.45) 0 12%, transparent 13%);
  filter:blur(5px);
  opacity:.55;
}
.ray{
  position:absolute;
  top:-18%;
  width:120px;
  height:78%;
  background:linear-gradient(to bottom,rgba(255,255,255,.20),rgba(255,255,255,0));
  filter:blur(16px);
  transform:rotate(16deg);
  transform-origin:top center;
  opacity:.42;
  animation:rayDrift 11s ease-in-out infinite alternate;
}
.ray-1{right:28%}
.ray-2{right:10%; width:85px; opacity:.28; animation-delay:-4s}
.bubble{
  position:absolute;
  border:1px solid rgba(255,255,255,.38);
  border-radius:50%;
  opacity:.45;
  animation:bubbleRise 10s linear infinite;
}
.b1{width:14px;height:14px;right:22%;bottom:9%}
.b2{width:9px;height:9px;right:14%;bottom:21%;animation-delay:-3s}
.b3{width:19px;height:19px;right:34%;bottom:2%;animation-delay:-6s}
@keyframes rayDrift{
  from{transform:rotate(13deg) translateX(-8px)}
  to{transform:rotate(18deg) translateX(12px)}
}
@keyframes bubbleRise{
  0%{transform:translateY(0) scale(.9);opacity:0}
  12%{opacity:.4}
  85%{opacity:.28}
  100%{transform:translateY(-520px) scale(1.1);opacity:0}
}

@media(max-width:860px){
  .hero.hero-split{
    min-height:auto;
  }
  .hero-split-grid{
    grid-template-columns:1fr;
    gap:28px;
    min-height:auto;
    padding:72px 0 132px;
  }
  .hero-copy{
    max-width:100%;
  }
  .hero-copy h1{
    font-size:46px;
  }
  .hero-book-stage{
    width:min(300px,72vw);
    margin:6px auto 0;
  }
  .hero-softcover{
    transform:rotateY(-4deg);
  }
}
@media(max-width:520px){
  .hero-split-grid{
    padding-top:58px;
  }
  .hero-copy h1{
    font-size:39px;
  }
  .hero-actions{
    flex-direction:column;
  }
  .hero-actions .btn{
    width:100%;
  }
  .hero-book-stage{
    width:min(245px,74vw);
  }
}
@media (prefers-reduced-motion: reduce){
  .ray,.bubble{animation:none}
  .hero-softcover{transition:none}
}


/* === FINAL REALISTIC SOFTCOVER HERO === */
.hero.hero-split{
  position:relative;
  min-height:680px;
  overflow:hidden;
  background:
    radial-gradient(circle at 74% 12%, rgba(200,245,255,.42), transparent 23%),
    radial-gradient(circle at 84% 75%, rgba(26,155,163,.24), transparent 30%),
    linear-gradient(135deg,#072a4c 0%,#0b4d78 49%,#0d7894 100%);
}
.hero.hero-split:after{
  content:"";
  position:absolute;
  z-index:4;
  left:-6%; right:-6%; bottom:-58px;
  height:112px;
  background:var(--cream);
  border-radius:50% 50% 0 0/62% 62% 0 0;
}
.hero-split-grid{
  position:relative;
  z-index:3;
  display:grid;
  grid-template-columns:minmax(0,1.08fr) minmax(300px,.92fr);
  align-items:center;
  gap:64px;
  min-height:680px;
  padding:84px 0 122px;
}
.hero-copy{max-width:620px}
.hero-copy h1{
  font-size:clamp(44px,5.4vw,74px);
  line-height:1.02;
  margin:14px 0 24px;
}
.hero-copy p{
  max-width:560px;
  font-size:18px;
  color:#edf8ff;
  margin:0 0 28px;
}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}

.hero-book{
  display:flex;
  justify-content:center;
  align-items:center;
  min-width:0;
}
.hero-book-stage{
  position:relative;
  width:min(370px,34vw);
  aspect-ratio: 1 / 1.18;
  display:flex;
  align-items:center;
  justify-content:center;
  perspective:1400px;
}
.hero-book-stage:before{
  content:"";
  position:absolute;
  width:74%;
  height:8%;
  bottom:0;
  left:13%;
  background:rgba(0,18,34,.26);
  border-radius:50%;
  filter:blur(18px);
  transform:translateY(12px);
}
.hero-softcover{
  position:relative;
  width:100%;
  transform:rotateY(-2.4deg) rotateZ(.25deg);
  transform-origin:center center;
  filter:drop-shadow(0 25px 30px rgba(4,25,45,.28));
  transition:transform .35s ease, filter .35s ease;
}
.hero-softcover:hover{
  transform:rotateY(-1deg) rotateZ(0deg) translateY(-3px);
  filter:drop-shadow(0 30px 38px rgba(4,25,45,.34));
}
.hero-softcover img{
  display:block;
  width:100%;
  height:auto;
  object-fit:contain;
  object-position:center;
  border-radius:2px 3px 3px 2px;
  background:#fff;
}
/* Very thin, realistic softcover edge: no thick 3D spine */
.hero-softcover:before{
  content:"";
  position:absolute;
  left:-2px;
  top:.8%;
  bottom:.8%;
  width:2px;
  background:linear-gradient(#dde1e4,#aeb6bc,#d9dde0);
  border-radius:1px 0 0 1px;
  opacity:.9;
}
.hero-softcover:after{
  content:"";
  position:absolute;
  left:2px;
  right:1px;
  bottom:-1px;
  height:1px;
  background:#d8d4cd;
  opacity:.95;
}
.hero-water{
  position:absolute;
  inset:0;
  z-index:1;
  pointer-events:none;
}
.hero-water:before,
.hero-water:after{
  content:"";
  position:absolute;
  border-radius:50%;
  filter:blur(48px);
  opacity:.3;
}
.hero-water:before{
  width:420px;height:180px;right:5%;bottom:4%;
  background:rgba(0,95,105,.7);
}
.hero-water:after{
  width:300px;height:120px;right:28%;top:8%;
  background:rgba(153,232,255,.55);
}
.ray{
  position:absolute;
  top:-20%;
  width:90px;
  height:78%;
  background:linear-gradient(to bottom,rgba(255,255,255,.18),rgba(255,255,255,0));
  filter:blur(16px);
  transform:rotate(15deg);
  opacity:.34;
  animation:wwRay 13s ease-in-out infinite alternate;
}
.ray-1{right:28%}
.ray-2{right:11%;width:65px;opacity:.23;animation-delay:-5s}
.bubble{
  position:absolute;
  border:1px solid rgba(255,255,255,.30);
  border-radius:50%;
  opacity:.35;
  animation:wwBubble 12s linear infinite;
}
.b1{width:12px;height:12px;right:21%;bottom:10%}
.b2{width:8px;height:8px;right:13%;bottom:24%;animation-delay:-4s}
.b3{width:16px;height:16px;right:35%;bottom:4%;animation-delay:-7s}
@keyframes wwRay{
  from{transform:rotate(13deg) translateX(-8px)}
  to{transform:rotate(17deg) translateX(10px)}
}
@keyframes wwBubble{
  0%{transform:translateY(0);opacity:0}
  15%{opacity:.35}
  85%{opacity:.22}
  100%{transform:translateY(-500px);opacity:0}
}

@media(max-width:860px){
  .hero.hero-split{min-height:auto}
  .hero-split-grid{
    grid-template-columns:1fr;
    gap:28px;
    min-height:auto;
    padding:70px 0 132px;
  }
  .hero-copy{max-width:100%}
  .hero-copy h1{font-size:46px}
  .hero-book-stage{width:min(300px,70vw)}
  .hero-softcover{transform:rotateY(-1deg)}
}
@media(max-width:520px){
  .hero-split-grid{padding-top:54px}
  .hero-copy h1{font-size:39px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .hero-book-stage{width:min(240px,72vw)}
}
@media(prefers-reduced-motion:reduce){
  .ray,.bubble{animation:none}
  .hero-softcover{transition:none}
}


/* === PRESS / BACKGROUND SECTION === */
.press-section{
  background:
    radial-gradient(circle at 88% 12%, rgba(50,160,178,.08), transparent 28%),
    linear-gradient(180deg,#fbf8f2 0%,#f5fbfc 100%);
}
.press-grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);
  gap:42px;
  align-items:stretch;
}
.press-copy{
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  padding:34px;
  box-shadow:0 12px 34px rgba(18,39,63,.06);
}
.press-btn{
  margin-top:8px;
}
.press-note{
  margin:12px 0 0;
  font-size:13px;
  color:var(--muted);
}
.fact-card{
  display:flex;
  gap:20px;
  align-items:flex-start;
  background:linear-gradient(145deg,#082f56,#0d647b);
  color:#fff;
  border-radius:18px;
  padding:32px;
  box-shadow:0 18px 45px rgba(8,42,78,.16);
}
.fact-card h3{
  font-size:29px;
  line-height:1.15;
  margin:8px 0 12px;
  color:#fff;
}
.fact-card p{
  margin:0;
  color:#eaf7fb;
}
.fact-card .kicker{
  color:#e1b65c;
}
.fact-icon{
  flex:0 0 auto;
  width:54px;
  height:54px;
  display:grid;
  place-items:center;
  border-radius:50%;
  background:rgba(255,255,255,.12);
  font-size:27px;
}
@media(max-width:860px){
  .press-grid{grid-template-columns:1fr}
}