* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #08111f;
  --bg-soft: #0f1b31;
  --card: rgba(255, 255, 255, 0.06);
  --card-border: rgba(255, 255, 255, 0.08);
  --text: #f4f7fb;
  --muted: #b7c3d8;
  --primary: #4f8cff;
  --primary-hover: #3a76e8;
  --accent: #8fb5ff;
  --success: #70e0a3;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", sans-serif;
  background: linear-gradient(180deg, #050b16 0%, #091225 100%);
  color: var(--text);
  line-height: 1.6;
}

a {
  text-decoration: none;
}

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.section {
  padding: 90px 0;
}

.center {
  text-align: center;
}

.section-tag {
  display: inline-block;
  margin-bottom: 14px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(79, 140, 255, 0.12);
  border: 1px solid rgba(79, 140, 255, 0.28);
  color: var(--accent);
  font-size: 0.88rem;
  font-weight: 600;
}

.section-heading h2,
.problem h2,
.contents h2,
.offer h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  margin-bottom: 16px;
}

.section-heading p,
.problem p,
.contents p,
.offer p {
  color: var(--muted);
  max-width: 760px;
}

.dark-section {
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

/* NAVBAR */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 0;
}

.logo {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), #7aa8ff);
  color: white;
  font-weight: 800;
  box-shadow: var(--shadow);
}

.nav-btn {
  color: white;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--card-border);
  padding: 12px 18px;
  border-radius: 12px;
  font-weight: 600;
  transition: 0.3s ease;
}

.nav-btn:hover {
  background: rgba(255, 255, 255, 0.14);
}

/* HERO */
.hero {
  position: relative;
  overflow: hidden;
  padding-bottom: 60px;
}

.hero::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -120px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(79, 140, 255, 0.28) 0%, rgba(79, 140, 255, 0) 70%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -160px;
  left: -100px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(112, 224, 163, 0.12) 0%, rgba(112, 224, 163, 0) 70%);
  pointer-events: none;
}

.hero-content {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
  min-height: calc(100vh - 120px);
}

.badge {
  display: inline-block;
  margin-bottom: 20px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(112, 224, 163, 0.12);
  border: 1px solid rgba(112, 224, 163, 0.26);
  color: var(--success);
  font-size: 0.9rem;
  font-weight: 700;
}

.hero-text h1 {
  font-size: clamp(2.4rem, 5vw, 4.6rem);
  line-height: 1.05;
  margin-bottom: 20px;
  max-width: 760px;
}

.hero-description {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 650px;
  margin-bottom: 30px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border-radius: 14px;
  font-weight: 700;
  transition: 0.3s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #7aa8ff);
  color: #fff;
  box-shadow: 0 16px 35px rgba(79, 140, 255, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, var(--primary-hover), #6899f7);
}

.btn-secondary {
  color: #fff;
  border: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.05);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.large-btn {
  width: 100%;
  margin-top: 10px;
}

.trust-points {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.95rem;
}

.hero-book {
  display: flex;
  justify-content: center;
}

.book-card {
  position: relative;
  width: 320px;
  min-height: 440px;
  padding: 30px 28px;
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03)),
    linear-gradient(135deg, #0d1c39, #142a54 55%, #1b3668);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.book-badge {
  display: inline-block;
  margin-bottom: 18px;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--accent);
}

.book-card h2 {
  font-size: 2rem;
  line-height: 1.1;
  margin-bottom: 14px;
}

.book-card p {
  color: #d5e1f5;
  font-size: 1rem;
  max-width: 240px;
}

.book-glow {
  position: absolute;
  bottom: -80px;
  right: -60px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(79, 140, 255, 0.45) 0%, rgba(79, 140, 255, 0) 70%);
}

/* LAYOUTS */
.two-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 34px;
  align-items: center;
}

.info-card,
.card,
.content-item,
.audience-box,
.testimonial-card,
.offer-box,
.faq-item,
.mini-book {
  background: var(--card);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(10px);
}

/* PROBLEM */
.info-card {
  padding: 28px;
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.info-card h3 {
  margin-bottom: 18px;
  font-size: 1.35rem;
}

.info-card ul {
  list-style: none;
}

.info-card li {
  color: var(--muted);
  margin-bottom: 12px;
  padding-left: 18px;
  position: relative;
}

.info-card li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* BENEFITS */
.cards-grid {
  margin-top: 42px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.card {
  padding: 28px 22px;
  border-radius: 22px;
  transition: 0.3s ease;
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(79, 140, 255, 0.35);
}

.icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #7aa8ff);
}

.card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.card p {
  color: var(--muted);
}

/* CONTENTS */
.content-list {
  display: grid;
  gap: 18px;
}

.content-item {
  padding: 22px;
  border-radius: 18px;
}

.content-item h3 {
  margin-bottom: 8px;
  font-size: 1.12rem;
}

.content-item p {
  color: var(--muted);
}

/* AUDIENCE */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 34px;
}

.audience-box {
  padding: 24px 18px;
  border-radius: 18px;
  text-align: center;
  font-weight: 600;
  color: #e9f0ff;
}

/* TESTIMONIAL */
.testimonial-card {
  max-width: 820px;
  margin: 34px auto 0;
  padding: 34px;
  border-radius: 24px;
  text-align: center;
  box-shadow: var(--shadow);
}

.testimonial-card p {
  font-size: 1.15rem;
  color: #eef4ff;
  margin-bottom: 14px;
}

.testimonial-card span {
  color: var(--muted);
}

/* OFFER */
.offer-box {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 30px;
  padding: 34px;
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.price-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 22px 0;
}

.old-price {
  font-size: 1.3rem;
  color: #7f8da6;
  text-decoration: line-through;
}

.new-price {
  font-size: 3rem;
  font-weight: 800;
  color: #fff;
}

.offer-list {
  list-style: none;
  margin-bottom: 18px;
}

.offer-list li {
  color: var(--muted);
  margin-bottom: 10px;
}

.disclaimer {
  display: block;
  margin-top: 16px;
  color: #8f9db4;
  font-size: 0.82rem;
  line-height: 1.5;
}

.offer-right {
  display: flex;
  align-items: center;
  justify-content: center;
}

.mini-book {
  width: 100%;
  max-width: 300px;
  min-height: 330px;
  border-radius: 24px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03)),
    linear-gradient(135deg, #10234b, #1a3772);
}

.mini-book h3 {
  font-size: 1.8rem;
  margin-bottom: 10px;
}

.mini-book p {
  color: #d8e2f5;
}

/* FAQ */
.faq-grid {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.faq-item {
  padding: 24px;
  border-radius: 18px;
}

.faq-item h3 {
  margin-bottom: 10px;
  font-size: 1.08rem;
}

.faq-item p {
  color: var(--muted);
}

/* FOOTER */
.footer {
  padding: 36px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  background: rgba(0,0,0,0.18);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer h3 {
  margin-bottom: 6px;
}

.footer p,
.footer-note {
  color: var(--muted);
}

/* RESPONSIVE */
@media (max-width: 980px) {
  .hero-content,
  .two-columns,
  .offer-box,
  .cards-grid,
  .audience-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .hero-content {
    min-height: auto;
    padding: 40px 0 20px;
  }

  .hero-book {
    justify-content: flex-start;
  }

  .book-card {
    width: 100%;
    max-width: 360px;
  }

  .cards-grid,
  .audience-grid,
  .faq-grid {
    gap: 16px;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 72px 0;
  }

  .navbar {
    padding: 22px 0;
  }

  .nav-btn {
    padding: 10px 14px;
    font-size: 0.92rem;
  }

  .hero-text h1 {
    font-size: 2.4rem;
  }

  .hero-description {
    font-size: 1rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .trust-points {
    flex-direction: column;
    gap: 10px;
  }

  .offer-box,
  .testimonial-card,
  .info-card,
  .card,
  .content-item,
  .faq-item {
    padding: 22px;
  }

  .new-price {
    font-size: 2.4rem;
  }
}