:root{
  --bg: #7fe6ea;          /* aqua blue background */
  --bg2:#b9f4f6;          /* lighter aqua for alternating sections */
  --ink:#062a2e;          /* deep teal text */
  --muted:#28565c;
  --card: rgba(255,255,255,.86);
  --card2: rgba(255,255,255,.92);
  --stroke: rgba(6,42,46,.14);
  --shadow: 0 14px 35px rgba(0,0,0,.10);
  --radius: 18px;
  --max: 1100px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--ink);
  background:
    radial-gradient(1200px 600px at 20% 10%, rgba(255,255,255,.60), transparent 60%),
    radial-gradient(900px 500px at 80% 0%, rgba(255,255,255,.45), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg2));
  line-height:1.5;
}

a{ color:inherit; }
.container{ width:min(var(--max), calc(100% - 36px)); margin:0 auto; }

.skip-link{
  position:absolute; left:-9999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{
  position:fixed; left:16px; top:16px; width:auto; height:auto;
  background:var(--card2); padding:10px 12px; border-radius:12px; box-shadow:var(--shadow);
  z-index:9999;
}

.site-header{
  position:sticky; top:0;
  backdrop-filter: blur(10px);
  background: rgba(127,230,234,.55);
  border-bottom:1px solid var(--stroke);
  z-index:1000;
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
  gap:14px;
}

.brand{ display:flex; align-items:center; gap:12px; }
.brand-title{ font-weight:800; letter-spacing:.2px; font-size:1.05rem; }
.brand-subtitle{ color:var(--muted); font-size:.92rem; }

.nav{ display:flex; gap:14px; align-items:center; flex-wrap:wrap; }
.nav a{
  text-decoration:none;
  padding:8px 10px;
  border-radius:12px;
  border:1px solid transparent;
}
.nav a:hover{ border-color:var(--stroke); background: rgba(255,255,255,.35); }

.hero{
  padding:46px 0 18px;
}
.hero-inner{
  display:grid;
  grid-template-columns: 1.35fr .85fr;
  gap:18px;
  align-items:stretch;
}
.hero h1{
  margin:0 0 10px;
  font-size: clamp(1.8rem, 3.2vw, 3rem);
  line-height:1.15;
  letter-spacing:-.4px;
}
.lead{
  font-size:1.05rem;
  color:var(--muted);
  margin:0 0 18px;
  max-width: 60ch;
}
.hero-actions{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom:14px; }
.hero-badges{ display:flex; gap:10px; flex-wrap:wrap; }

.section{
  padding:44px 0;
}
.section-alt{
  background: rgba(255,255,255,.28);
  border-top:1px solid var(--stroke);
  border-bottom:1px solid var(--stroke);
}
.section-head h2{ margin:0 0 8px; font-size:1.6rem; }
.section-head p{ margin:0; color:var(--muted); }
.section-foot{ margin-top:18px; }

.two-col{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap:18px;
  align-items:start;
}

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

.card{
  background: var(--card);
  border:1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding:16px;
}

.hero-card .card{
  height:100%;
  background: linear-gradient(180deg, var(--card2), var(--card));
}

.card-kicker{
  display:inline-block;
  font-weight:700;
  font-size:.86rem;
  color:var(--muted);
  margin-bottom:8px;
}
.card-title{ margin:0 0 8px; }
.card-text{ margin:0 0 12px; color:var(--muted); }
.card-actions{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom:10px; }
.card-note{ margin:0; color:var(--muted); font-size:.92rem; }

.book-top{ display:flex; gap:14px; align-items:flex-start; }
.cover{
  width:78px; height:108px;
  border-radius:14px;
  border:1px dashed rgba(6,42,46,.25);
  display:grid; place-items:center;
  color:rgba(6,42,46,.65);
  font-weight:700;
}
.book-meta h3{ margin:0 0 6px; }
.book-meta p{ margin:0 0 8px; color:var(--muted); }
.mini-actions{ display:flex; gap:10px; flex-wrap:wrap; }

.stack{ display:grid; gap:12px; margin-top:14px; }
.post-meta{ display:flex; gap:10px; align-items:center; color:var(--muted); font-size:.92rem; margin-bottom:6px; }
.pill{
  display:inline-block;
  padding:4px 10px;
  border-radius:999px;
  background: rgba(255,255,255,.55);
  border:1px solid var(--stroke);
  font-weight:700;
}
.badge{
  display:inline-block;
  padding:6px 10px;
  border-radius:999px;
  background: rgba(255,255,255,.45);
  border:1px solid var(--stroke);
  font-weight:700;
  font-size:.92rem;
}

.btn{
  display:inline-block;
  text-decoration:none;
  font-weight:800;
  padding:11px 14px;
  border-radius:14px;
  border:1px solid rgba(6,42,46,.22);
  background: rgba(255,255,255,.75);
  transition: transform .08s ease, background .12s ease;
}
.btn:hover{ transform: translateY(-1px); background: rgba(255,255,255,.90); }
.btn:active{ transform: translateY(0px); }

.btn-small{ padding:8px 11px; border-radius:12px; font-weight:800; }
.btn-ghost{
  background: transparent;
  border-color: rgba(6,42,46,.22);
}
.link{
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.muted{ color:var(--muted); }

.bullets{
  margin:10px 0 14px;
  padding-left: 18px;
  color: var(--muted);
}

.form-card .form-placeholder{ margin:12px 0 14px; }
.form-placeholder .line{
  height:12px;
  border-radius:10px;
  background: rgba(6,42,46,.10);
  margin:10px 0;
}
.form-placeholder .tall{ height:64px; }
.form-placeholder .short{ width:55%; }

.site-footer{
  padding:24px 0 34px;
  border-top: 1px solid var(--stroke);
  background: rgba(255,255,255,.22);
}
.footer-inner{
  display:flex; justify-content:space-between; align-items:flex-start; gap:16px;
  flex-wrap:wrap;
}
.site-footer p{ margin:0; }

/* Responsive */
@media (max-width: 920px){
  .hero-inner{ grid-template-columns: 1fr; }
  .two-col{ grid-template-columns: 1fr; }
  .cards{ grid-template-columns: 1fr; }
  .nav{ gap:8px; }
}