/* ---------- Tokens ---------- */
:root {
  --blue: #3a8fd4;
  --blue-dark: #2a6fae;
  --blue-light: #e6f1fb;
  --orange: #e8862a;
  --orange-dark: #c96f1a;
  --cream: #fdf4e6;
  --ink: #1f2937;
  --muted: #5b6676;
  --line: #e3e8ef;
  --bg: #ffffff;
  --bg-alt: #f5f8fc;
  --card: #ffffff;
  --green: #1f9d55;
  --radius: 16px;
  --shadow: 0 6px 24px rgba(31, 41, 55, .08);
  --shadow-hover: 0 14px 36px rgba(31, 41, 55, .14);
  --font: 'Nunito', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: var(--blue-dark); }
h1, h2, h3 { line-height: 1.15; margin: 0 0 .5rem; font-weight: 800; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 900; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1rem; }
ul, ol { margin: 0; padding: 0; }
small { color: var(--muted); }

.container { width: min(1140px, 100% - 32px); margin-inline: auto; }
.container.narrow { width: min(760px, 100% - 32px); }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .78rem;
  font-weight: 800;
  color: var(--orange-dark);
  margin-bottom: .6rem;
}
.accent { color: var(--orange); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .75rem 1.3rem;
  border-radius: 999px;
  font-weight: 800;
  font-size: .95rem;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--orange); color: #fff; box-shadow: 0 4px 14px rgba(232, 134, 42, .35); }
.btn-primary:hover { background: var(--orange-dark); }
.btn-ghost { background: transparent; color: var(--blue-dark); border-color: var(--blue); }
.btn-ghost:hover { background: var(--blue-light); }
.btn-outline { background: transparent; color: var(--orange-dark); border-color: var(--orange); }
.btn-outline:hover { background: var(--cream); }
.btn-light { background: #fff; color: var(--blue-dark); }
.btn-light:hover { background: var(--cream); }
.btn-sm { padding: .55rem 1rem; font-size: .88rem; }
.btn-lg { padding: .95rem 1.8rem; font-size: 1.05rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 1.5rem; height: 68px; }
.brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--ink); font-size: 1.15rem; font-weight: 600; }
.brand img { border-radius: 50%; }
.brand strong { color: var(--blue-dark); font-weight: 900; }
.nav { display: flex; gap: 1.2rem; margin-left: auto; }
.nav a { text-decoration: none; color: var(--ink); font-weight: 700; font-size: .95rem; }
.nav a:hover { color: var(--blue-dark); }

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(1200px 500px at 85% -10%, var(--blue-light), transparent 60%),
              radial-gradient(800px 400px at -10% 100%, var(--cream), transparent 60%);
  padding: 4.5rem 0 3.5rem;
}
.hero-inner { display: grid; grid-template-columns: 1.3fr 1fr; gap: 3rem; align-items: center; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 56ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin: 1.5rem 0 1.4rem; }
.hero-points { display: flex; flex-wrap: wrap; gap: .6rem 1.4rem; list-style: none; color: var(--muted); font-weight: 700; font-size: .92rem; }
.hero-points li::before { content: "✔ "; color: var(--green); }
.hero-art { display: flex; justify-content: center; }
.hero-art img { width: min(320px, 70vw); height: auto; filter: drop-shadow(0 18px 30px rgba(58, 143, 212, .25)); }

/* ---------- Trust strip ---------- */
.strip { background: var(--blue); color: #fff; }
.strip-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; padding: 1.1rem 0; }
.strip-item { display: flex; align-items: center; gap: .7rem; }
.strip-icon { font-size: 1.5rem; }
.strip-item strong { display: block; font-size: .95rem; }
.strip-item small { color: rgba(255, 255, 255, .85); font-size: .8rem; }

/* ---------- Sections ---------- */
.section { padding: 4rem 0; }
.section-alt { background: var(--bg-alt); }
.section-head { max-width: 72ch; margin-bottom: 2rem; }
.section-head p { color: var(--muted); font-size: 1.05rem; }

/* ---------- Grid / cards ---------- */
.grid { display: grid; gap: 1.4rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.card p { color: var(--muted); font-size: .95rem; }
.card-featured { border-color: var(--orange); border-width: 2px; }
.card-cta { background: var(--cream); border-style: dashed; border-color: var(--orange); justify-content: center; }

.badge {
  display: inline-block;
  align-self: flex-start;
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: .25rem .65rem;
  border-radius: 999px;
  background: var(--blue-light);
  color: var(--blue-dark);
  margin-bottom: .7rem;
}
.badge-free { background: #e4f6ec; color: var(--green); }
.badge-best { background: var(--orange); color: #fff; }
.part-no { font-size: .8rem; font-weight: 900; color: var(--blue); text-transform: uppercase; letter-spacing: .08em; margin-bottom: .3rem; }

.features { list-style: none; margin: 0 0 1rem; font-size: .92rem; }
.features li { padding-left: 1.35rem; position: relative; margin-bottom: .3rem; }
.features li::before { content: "✔"; position: absolute; left: 0; color: var(--green); font-weight: 900; }
.features.cols { columns: 2; column-gap: 2rem; }
.features.cols li { break-inside: avoid; }

.card-foot {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.price { display: flex; align-items: baseline; gap: .5rem; }
.price s { color: var(--muted); font-size: .9rem; }
.price .now { font-size: 1.4rem; font-weight: 900; color: var(--ink); }
.price.big .now { font-size: 2.2rem; }

/* Hero card (Complete Book) */
.card-hero {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 2rem;
  align-items: center;
  background: linear-gradient(135deg, #fff 0%, var(--blue-light) 100%);
  border: 2px solid var(--blue);
  margin-bottom: 1.6rem;
}
.card-hero h3 { font-size: 1.5rem; }
.card-hero-buy {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .7rem;
  text-align: center;
  padding: 1.5rem;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

/* ---------- Steps ---------- */
.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
  counter-reset: step;
}
.steps li {
  counter-increment: step;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem 1.4rem 1.4rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: .3rem;
}
.steps li::before {
  content: counter(step);
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-weight: 900;
  display: grid; place-items: center;
  margin-bottom: .5rem;
}
.steps strong { font-size: 1.05rem; }
.steps span { color: var(--muted); font-size: .92rem; }

/* ---------- FAQ ---------- */
details { border: 1px solid var(--line); border-radius: 12px; padding: 1rem 1.2rem; margin-bottom: .8rem; background: var(--card); }
details[open] { border-color: var(--blue); }
summary { cursor: pointer; font-weight: 800; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-size: 1.3rem; color: var(--blue); font-weight: 900; }
details[open] summary::after { content: "–"; }
details p { margin: .8rem 0 0; color: var(--muted); }

/* ---------- CTA band ---------- */
.cta-band { background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%); color: #fff; padding: 3.5rem 0; }
.cta-inner { text-align: center; }
.cta-inner h2 { color: #fff; }
.cta-inner p { color: rgba(255, 255, 255, .9); font-size: 1.1rem; margin-bottom: 1.4rem; }

/* ---------- Footer ---------- */
.site-footer { background: #111827; color: #cbd5e1; padding: 2.5rem 0 1.5rem; font-size: .9rem; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 2rem; flex-wrap: wrap; padding-bottom: 1.5rem; border-bottom: 1px solid #1f2937; }
.footer-brand { display: flex; align-items: center; gap: .8rem; }
.footer-brand img { border-radius: 50%; }
.footer-brand strong { display: block; color: #fff; }
.footer-brand small { color: #94a3b8; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.2rem; }
.footer-links a { color: #e2e8f0; text-decoration: none; font-weight: 700; }
.footer-links a:hover { color: #fff; text-decoration: underline; }
.footer-legal { padding-top: 1.2rem; color: #94a3b8; font-size: .8rem; }
.footer-legal a { color: #cbd5e1; }
.footer-legal p { margin-bottom: .5rem; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .strip-inner { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .card-hero { grid-template-columns: 1fr; }
  .nav { display: none; }
}
@media (max-width: 640px) {
  .hero { padding: 3rem 0 2.5rem; }
  .hero-inner { grid-template-columns: 1fr; gap: 1.5rem; }
  .hero-art { order: -1; }
  .hero-art img { width: 160px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .strip-inner { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .features.cols { columns: 1; }
  .section { padding: 2.8rem 0; }
  .card-foot .btn { width: 100%; }
}