:root{
  --bg: #eef0ed;
  --accent: #5f776a;
  --accentDark: #4f655a;
  --text: #1f2321;
  --muted: #4b5650;
  --card: #ffffff;
  --border: rgba(0,0,0,0.08);
  --shadow: 0 10px 30px rgba(0,0,0,0.08);
  --radius: 18px;
}

*{ box-sizing: border-box; }

html, body{
  margin: 0;
  padding: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
}

.wrap{
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar{
  position: sticky;
  top: 0;
  background: rgba(238,240,237,0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(6px);
  z-index: 50;
}

.topbar-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  gap: 16px;
}

.brand{
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.2px;
}

.nav{
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a{
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
  padding: 6px 10px;
  border-radius: 999px;
}

.nav a:hover{
  background: rgba(95,119,106,0.12);
  color: var(--text);
}

.hero{
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: center;
  padding: 36px 0 18px 0;
}

.hero-text h1{
  margin: 0 0 10px 0;
  font-size: clamp(28px, 3.2vw, 44px);
  line-height: 1.06;
}

.subline{
  margin: 0 0 16px 0;
  color: var(--muted);
  max-width: 52ch;
}

.cta-row{
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 10px 0 10px 0;
}

.micro{
  margin: 8px 0 0 0;
  color: var(--muted);
  font-size: 14px;
  max-width: 60ch;
}

.hook-section{
  margin: 24px 0;
  text-align: center;
}

.hook{
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.5;
  max-width: 100%;
}

.hook-keyword{
  font-style: italic;
}

.hero-image{
  background: #b9c8b7;
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.hero-image img{
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
}

.btn{
  display: inline-block;
  text-decoration: none;
  background: var(--accent);
  color: #fff;
  padding: 12px 16px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.2px;
  border: 1px solid rgba(0,0,0,0.06);
}

.btn:hover{ background: var(--accentDark); }

.btn.ghost{
  background: transparent;
  color: var(--accentDark);
  border: 1px solid rgba(95,119,106,0.35);
}

.btn.ghost:hover{
  background: rgba(95,119,106,0.10);
}

.btn.light{
  background: #fff;
  color: var(--accentDark);
  border: 1px solid rgba(0,0,0,0.10);
}

.btn.light:hover{
  background: rgba(255,255,255,0.92);
}

.features{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 18px 0 18px 0;
}

.feature-card{
  background: rgba(255,255,255,0.75);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.05);
  text-align: center;
}

.feature-title{
  margin: 0;
  font-weight: 700;
}

.feature-text{
  margin: 6px 0 0 0;
  color: var(--muted);
  font-size: 14px;
}

.white-box{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  margin: 18px 0;
}

.white-box h2{
  margin: 42px 0 14px 0;
  font-size: 22px;
}

.white-box h2:first-child{
  margin-top: 0;
}

.white-box h3{
  margin: 18px 0 8px 0;
  font-size: 16px;
}

.white-box p{
  margin: 8px 0;
}

.main-content{
  padding: 28px;
}

.intro-box{
  padding: 20px 28px;
}

.intro-box h2{
  margin: 0 0 12px 0;
  font-size: 20px;
}

.intro-box p{
  margin: 0;
  line-height: 1.7;
}

.facts-inline{
  margin: 24px 0;
  padding: 18px;
  background: rgba(95,119,106,0.05);
  border: 1px solid rgba(95,119,106,0.12);
  border-radius: 14px;
}

.facts-inline h2{
  margin: 0 0 14px 0;
  font-size: 18px;
}

.facts-grid{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.fact{
  background: rgba(255,255,255,0.65);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
}

.fact-label{
  margin: 0 0 6px 0;
  font-weight: 700;
  font-size: 14px;
}

.fact p:last-child{
  margin: 0;
}

.cliff{
  margin-top: 14px;
  padding: 12px;
  border-radius: 12px;
  background: rgba(95,119,106,0.08);
  border: 1px solid rgba(95,119,106,0.18);
}

.cta-inline{
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.paper{
  margin-top: 14px;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(0,0,0,0.08);
  background: rgba(0,0,0,0.02);
}

.paper-title{ margin: 0; }
.paper-text{ margin: 6px 0 0 0; color: var(--muted); }

.author-box-inline{
  margin: 32px 0 32px 0;
}

.author-inner{
  background: rgba(185,200,183,0.25);
  border: 1px solid rgba(95,119,106,0.18);
  border-radius: 14px;
  padding: 20px;
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 20px;
  align-items: start;
}

.author-image{
  width: 110px;
  height: 110px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid #fff;
  box-shadow: 0 6px 18px rgba(0,0,0,0.12);
}

.author-text h3{
  margin: 0 0 10px 0;
  font-size: 17px;
  color: var(--accent);
}

.author-text p{
  margin: 8px 0;
  line-height: 1.6;
  font-size: 15px;
}

.author-link{
  margin-top: 10px;
  font-size: 14px;
}

.author-link a{
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(95,119,106,0.35);
}

.author-link a:hover{
  border-bottom-color: var(--accent);
}

.cta-final{
  margin-top: 24px;
}

.author-box{
  margin: 28px 0 0 0;
}

.author-inner{
  background: rgba(185,200,183,0.25);
  border: 1px solid rgba(95,119,106,0.18);
  border-radius: var(--radius);
  padding: 24px;
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  align-items: start;
}

.author-image{
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid #fff;
  box-shadow: 0 6px 18px rgba(0,0,0,0.12);
}

.author-text h3{
  margin: 0 0 12px 0;
  font-size: 18px;
  color: var(--accent);
}

.author-text p{
  margin: 8px 0;
  line-height: 1.6;
}

.author-link{
  margin-top: 12px;
  font-size: 14px;
}

.author-link a{
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(95,119,106,0.35);
}

.author-link a:hover{
  border-bottom-color: var(--accent);
}

.footer{
  margin-top: 28px;
  background: #5f776a;
  color: #fff;
  padding: 28px 0;
}

.footer-inner{
  display: grid;
  gap: 12px;
  justify-items: center;
  text-align: center;
}

.footer-title{
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

.footer-links{
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-links a{
  color: #fff;
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.35);
}

.footer-links a:hover{
  border-bottom-color: rgba(255,255,255,0.85);
}

.footer-note{
  margin: 0;
  font-size: 13px;
  opacity: 0.92;
}

@media (max-width: 900px){
  .hero{
    grid-template-columns: 1fr;
    padding-top: 22px;
  }
  .features{
    grid-template-columns: 1fr;
  }
  .facts-grid{
    grid-template-columns: 1fr;
  }
  .author-inner{
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
  }
}