:root {
  --navy: #142D4E;
  --teal: #159B91;
  --teal-dark: #0F766E;
  --teal-light: #E6F7F5;
  --amber: #F59E0B;
  --bg: #F8FAFC;
  --text: #334155;
  --muted: #64748B;
  --white: #FFFFFF;
  --border: #E2E8F0;
  --shadow: 0 16px 45px rgba(20, 45, 78, .08);
  --shadow-lg: 0 24px 50px rgba(20, 45, 78, .12);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 95px;
}

body {
  font-family: "DM Sans", sans-serif;
  background: var(--white);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
img { max-width: 100%; display: block; }

.container {
  width: min(1120px, 90%);
  margin: auto;
}

.section { padding: 88px 0; }

.eyebrow {
  display: inline-block;
  color: var(--teal-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 14px;
}

h1, h2, h3 {
  color: var(--navy);
  line-height: 1.2;
}

h1, h2 { font-family: "Playfair Display", serif; }

h2 { font-size: clamp(30px, 4vw, 43px); }

.section-heading {
  max-width: 680px;
  text-align: center;
  margin: 0 auto 45px;
}

.section-heading p {
  margin-top: 14px;
  color: var(--muted);
  font-size: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 9px;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
  transition: all .25s ease;
  text-align: center;
}

.btn-primary {
  color: white;
  background: var(--teal);
  box-shadow: 0 4px 14px rgba(21, 155, 145, .25);
}

.btn-primary:hover {
  background: var(--teal-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(21, 155, 145, .35);
}

.btn-outline {
  color: var(--navy);
  background: white;
  border-color: var(--border);
}

.btn-outline:hover {
  border-color: var(--teal);
  color: var(--teal-dark);
  background: #F8FAFC;
}

/* Header and logo */

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.navbar {
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-icon {
  width: 46px;
  height: 46px;
  object-fit: contain;
  border-radius: 8px;
}

.brand-name {
  color: var(--navy);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -.6px;
  line-height: 1.15;
}

.brand-name .brand-aero {
  color: var(--navy);
}

.brand-name .brand-reads {
  color: var(--teal);
}

.brand-name small {
  display: block;
  color: var(--teal);
  font-size: 9px;
  letter-spacing: 2.2px;
  margin-top: 3px;
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 14px;
  font-weight: 600;
}

.nav-links > a:not(.btn) {
  color: var(--text);
  transition: color .2s ease;
}

.nav-links > a:not(.btn):hover { color: var(--teal-dark); }

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  font-size: 27px;
  color: var(--navy);
  cursor: pointer;
}

/* Hero */

.hero {
  padding: 76px 0 82px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 90% 20%, #D7F3EE 0, transparent 40%),
    linear-gradient(135deg, #F8FAFC, #EFF8F7);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  align-items: center;
  gap: 45px;
}

.hero h1 {
  font-size: clamp(38px, 5.2vw, 62px);
  letter-spacing: -1.2px;
  margin-bottom: 22px;
}

.hero h1 span { color: var(--teal-dark); }

.hero-copy {
  font-size: 17px;
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-note {
  margin-top: 22px;
  color: var(--muted);
  font-size: 12.5px;
}

.hero-art {
  min-height: 410px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.art-circle {
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: #D8F0EC;
  opacity: .8;
}

.book-stack {
  position: relative;
  z-index: 1;
  transform: rotate(-5deg);
  filter: drop-shadow(0 25px 22px rgba(20,45,78,.16));
  transition: transform .35s ease;
}

.hero-art:hover .book-stack {
  transform: rotate(-3deg) scale(1.02);
}

.book {
  width: 260px;
  height: 88px;
  border-radius: 5px 12px 12px 5px;
  margin: 9px 0;
  display: flex;
  align-items: center;
  padding: 17px;
  gap: 14px;
  color: white;
  border-left: 9px solid rgba(0,0,0,.18);
  box-shadow: 0 4px 10px rgba(0,0,0,.08);
  transition: transform .25s ease;
}

.book:hover {
  transform: translateX(6px);
}

.book b {
  font-family: "Playfair Display", serif;
  font-size: 22px;
}

.book small {
  display: block;
  font-size: 10px;
  opacity: .85;
  letter-spacing: .5px;
}

.book-1 { background: var(--navy); }
.book-2 { background: var(--teal); margin-left: 18px; }
.book-3 { background: #D97706; margin-left: -12px; }
.book-4 { background: #315A78; margin-left: 15px; }

.floating-note {
  position: absolute;
  z-index: 2;
  background: white;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 700;
  animation: floatBadge 3.5s ease-in-out infinite alternate;
}

.note-top { top: 45px; right: 0; }
.note-bottom { bottom: 25px; left: 0; animation-delay: -1.75s; }

@keyframes floatBadge {
  0% { transform: translateY(0); }
  100% { transform: translateY(-7px); }
}

/* Intro */

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 55px;
  align-items: center;
}

.intro-copy p {
  margin-top: 17px;
  color: var(--muted);
  font-size: 16px;
}

.idea-card {
  background: #F1F7F6;
  border: 1px solid #DCECE9;
  padding: 34px;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(21, 155, 145, .05);
}

.idea-card h3 { font-size: 22px; margin-bottom: 20px; }

.check-list {
  list-style: none;
  display: grid;
  gap: 15px;
}

.check-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 15px;
}

.check {
  display: inline-flex;
  flex: 0 0 25px;
  height: 25px;
  align-items: center;
  justify-content: center;
  background: #D5F2EB;
  color: var(--teal-dark);
  border-radius: 50%;
  font-weight: 800;
  font-size: 13px;
}

/* How it works */

.soft-section { background: var(--bg); }

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.step {
  background: white;
  padding: 28px 22px;
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all .25s ease;
}

.step:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: #BBE3DC;
}

.step-number {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  background: #D8F0EC;
  color: var(--teal-dark);
  border-radius: 12px;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 20px;
}

.step h3 { font-size: 18px; margin-bottom: 10px; }
.step p { font-size: 14px; color: var(--muted); }

/* Rental plans */

.plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.plan {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 32px 26px;
  display: flex;
  flex-direction: column;
  background: white;
  position: relative;
  transition: all .25s ease;
}

.plan:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.plan.featured {
  border: 2px solid var(--teal);
  box-shadow: 0 12px 35px rgba(21, 155, 145, .12);
}

.popular {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  background: var(--teal);
  color: white;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .5px;
}

.plan h3 { font-size: 23px; margin-bottom: 10px; }

.plan-description {
  color: var(--muted);
  font-size: 14px;
  min-height: 46px;
}

.plan-price {
  color: var(--navy);
  font-size: 34px;
  font-weight: 800;
  margin: 20px 0 2px;
}

.price-note {
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 22px;
}

.plan ul {
  list-style: none;
  border-top: 1px solid var(--border);
  padding-top: 20px;
  margin-bottom: 26px;
  flex: 1;
}

.plan li {
  font-size: 14.5px;
  padding: 8px 0;
  color: #475569;
}

.plan li::before {
  content: "✓";
  color: var(--teal-dark);
  font-weight: 800;
  margin-right: 10px;
}

.plan .btn { width: 100%; }

.plans-disclaimer {
  text-align: center;
  color: var(--muted);
  font-size: 12.5px;
  margin-top: 28px;
}

/* Benefits */

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.benefit {
  text-align: center;
  padding: 24px 18px;
  background: white;
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all .25s ease;
}

.benefit:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.benefit-icon {
  width: 62px;
  height: 62px;
  margin: 0 auto 18px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background: #E5F5F2;
  font-size: 27px;
}

.benefit h3 { font-size: 17px; margin-bottom: 9px; }
.benefit p { font-size: 14px; color: var(--muted); }

/* Audience */

.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.audience {
  background: white;
  padding: 24px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  text-align: center;
  font-weight: 700;
  color: var(--navy);
  transition: all .2s ease;
}

.audience:hover {
  border-color: var(--teal);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.audience span { display: block; font-size: 28px; margin-bottom: 10px; }

/* About */

.about-box {
  background: var(--navy);
  color: white;
  padding: 55px;
  border-radius: 24px;
  display: grid;
  grid-template-columns: 1fr .8fr;
  align-items: center;
  gap: 40px;
  box-shadow: 0 20px 45px rgba(20, 45, 78, .18);
}

.about-box h2 { color: white; }
.about-box p { color: #CBD5E1; margin-top: 17px; font-size: 15.5px; }

.about-quote {
  font-family: "Playfair Display", serif;
  font-size: 29px;
  color: #8BE0D1;
  line-height: 1.45;
  font-style: italic;
}

/* FAQ */

.faq-list { max-width: 780px; margin: auto; }

details {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
  transition: all .2s ease;
}

summary {
  color: var(--navy);
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  font-size: 17px;
}

summary::-webkit-details-marker { display: none; }

summary::after {
  content: "+";
  color: var(--teal-dark);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  transition: transform .2s ease;
}

details[open] summary::after {
  content: "−";
}

details p {
  margin-top: 14px;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.6;
}

/* Callback form */

.callback-section { background: #EDF7F5; }

.callback-grid {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 50px;
  align-items: start;
}

.callback-copy p { color: var(--muted); margin-top: 17px; font-size: 15.5px; }

.contact-point {
  margin-top: 25px;
  color: var(--navy);
  font-weight: 700;
  font-size: 15px;
  display: inline-block;
  padding: 8px 16px;
  background: white;
  border-radius: 9px;
  border: 1px solid #DCECE9;
}

.callback-form {
  background: white;
  padding: 34px;
  border-radius: 18px;
  border: 1px solid var(--border);
  box-shadow: 0 15px 35px rgba(20,45,78,.06);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 17px;
}

.field { display: flex; flex-direction: column; gap: 7px; }
.field.full { grid-column: 1 / -1; }

.field label {
  font-size: 13px;
  color: var(--navy);
  font-weight: 700;
}

.field input, .field select, .field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #CBD5E1;
  border-radius: 8px;
  outline: none;
  color: var(--text);
  background: white;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(21,155,145,.14);
}

.field textarea { resize: vertical; min-height: 100px; }

.consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 12.5px;
  color: var(--muted);
  margin: 20px 0;
  cursor: pointer;
}

.consent input {
  margin-top: 4px;
  accent-color: var(--teal);
  cursor: pointer;
}

.callback-form .btn { width: 100%; }
.form-note { font-size: 11.5px; color: var(--muted); margin-top: 12px; }

/* Footer */

footer {
  background: #0D2039;
  color: #CBD5E1;
  padding: 55px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 35px;
}

footer .brand-name { color: white; }
footer .brand-name .brand-aero { color: white; }
footer .brand-name .brand-reads { color: #8BE0D1; }
footer .brand-name small { color: #8BE0D1; }
footer p { font-size: 14px; max-width: 350px; line-height: 1.6; }

footer h3 {
  color: white;
  font-size: 15px;
  margin-bottom: 16px;
  font-weight: 700;
}

.footer-links { display: grid; gap: 10px; font-size: 13.5px; }
.footer-links a:hover { color: #8BE0D1; }

.footer-bottom {
  border-top: 1px solid #334155;
  padding-top: 22px;
  font-size: 12.5px;
  display: flex;
  justify-content: space-between;
  gap: 15px;
  flex-wrap: wrap;
}

/* Responsive */

@media (max-width: 950px) {
  .nav-links { gap: 14px; }
  .nav-links > a:not(.btn) { display: none; }
  .hero-grid { gap: 24px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .plans-grid { grid-template-columns: repeat(2, 1fr); }
  .plan:last-child { grid-column: 1 / -1; }
  .benefits-grid, .audience-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 620px) {
  .section { padding: 62px 0; }
  .navbar { min-height: 72px; }
  .brand-icon { width: 40px; height: 40px; }
  .brand-name { font-size: 21px; }

  .menu-toggle { display: block; }

  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: white;
    padding: 22px 5%;
    border-bottom: 1px solid var(--border);
    align-items: stretch;
    flex-direction: column;
    gap: 16px;
    box-shadow: var(--shadow);
  }

  .nav-links.open { display: flex; }
  .nav-links > a:not(.btn) { display: block; }
  .nav-links .btn { width: 100%; }

  .hero { padding: 48px 0 35px; }
  .hero-grid, .intro-grid, .callback-grid, .about-box { grid-template-columns: 1fr; }
  .hero h1 { font-size: 38px; }
  .hero-copy { font-size: 15px; }
  .hero-art { min-height: 320px; transform: scale(.84); margin: -5px 0; }
  .art-circle { width: 275px; height: 275px; }
  .note-top { right: -5px; }
  .note-bottom { left: -5px; }

  .intro-grid { gap: 28px; }
  .idea-card { padding: 24px; }
  .steps, .plans-grid, .benefits-grid, .audience-grid { grid-template-columns: 1fr; }
  .plan:last-child { grid-column: auto; }
  .plan { padding: 28px 22px; }

  .about-box { padding: 32px 24px; gap: 25px; }
  .about-quote { font-size: 24px; }

  .callback-grid { gap: 28px; }
  .callback-form { padding: 22px 18px; }
  .form-grid { grid-template-columns: 1fr; }
  .field.full { grid-column: auto; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}