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

:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --gray-50: #f9f9f9;
  --gray-100: #f0f0f0;
  --gray-200: #e0e0e0;
  --gray-400: #9e9e9e;
  --gray-600: #5a5a5a;
  --gray-800: #2a2a2a;
  --accent: #1a6b4a;
  --accent-light: #e8f4ef;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max-width: 820px;
  --section-gap: 80px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ── Layout ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: var(--section-gap) 0;
}

section:nth-child(even) {
  background: var(--gray-50);
}

/* ── Header / Nav ── */
header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--gray-200);
  z-index: 100;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--black);
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--gray-600);
  text-decoration: none;
  transition: color 0.15s;
}

.nav-links a:hover {
  color: var(--black);
}

/* ── Hero ── */
#hero {
  background: var(--black);
  color: var(--white);
  padding: 100px 0 90px;
  text-align: center;
}

#hero .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.hero-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #6fcf97;
  background: rgba(111, 207, 151, 0.12);
  border: 1px solid rgba(111, 207, 151, 0.3);
  padding: 5px 14px;
  border-radius: 100px;
}

#hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  max-width: 640px;
}

#hero p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.65);
  max-width: 520px;
}

/* ── Section headings ── */
.section-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--black);
  margin-bottom: 18px;
  line-height: 1.2;
}

h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 8px;
}

p {
  color: var(--gray-600);
  margin-bottom: 14px;
}

p:last-child {
  margin-bottom: 0;
}

/* ── Card grid ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 36px;
}

.card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  padding: 24px;
}

.card-icon {
  font-size: 1.5rem;
  margin-bottom: 14px;
  display: block;
}

/* ── Step list ── */
.step-list {
  list-style: none;
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.step-list li {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.step-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.step-body h3 {
  margin-bottom: 4px;
}

/* ── Security list ── */
.security-list {
  list-style: none;
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.security-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 20px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
}

.check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
  font-weight: 700;
}

/* ── Privacy Policy ── */
#privacy .policy-body {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.policy-section h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 8px;
}

/* ── Retention ── */
.retention-box {
  margin-top: 32px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  padding: 28px 32px;
}

.retention-box ul {
  padding-left: 20px;
  color: var(--gray-600);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* ── Contact ── */
#contact {
  text-align: center;
}

#contact .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  border: 1px solid var(--accent);
  padding: 12px 28px;
  border-radius: 8px;
  transition: background 0.15s, color 0.15s;
}

.contact-email:hover {
  background: var(--accent);
  color: var(--white);
}

/* ── Footer ── */
footer {
  background: var(--black);
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.8rem;
  text-align: center;
  padding: 28px 24px;
}

footer a {
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
}

footer a:hover {
  color: var(--white);
}

/* ── Responsive ── */
@media (max-width: 600px) {
  :root {
    --section-gap: 56px;
  }

  .nav-links {
    display: none;
  }

  #hero {
    padding: 72px 0 64px;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .retention-box {
    padding: 20px;
  }
}