:root {
  --ink: #10151a;
  --ink-soft: #4b5563;
  --paper: #ffffff;
  --paper-alt: #f6f8f9;
  --line: #e6e9eb;
  --brand: #0f6f6a;
  --brand-dark: #0b514d;
  --brand-tint: #e7f4f3;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 21, 26, 0.04), 0 8px 24px rgba(16, 21, 26, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding-inline: 24px;
}

a {
  color: inherit;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 16px;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--ink);
}

.nav {
  display: flex;
  gap: 28px;
  font-size: 0.9rem;
}

.nav a {
  text-decoration: none;
  color: var(--ink-soft);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 6px 16px rgba(15, 111, 106, 0.25);
}

.btn-primary:hover {
  background: var(--brand-dark);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  border-color: var(--brand);
  color: var(--brand-dark);
}

.btn-small {
  padding: 9px 18px;
  font-size: 0.85rem;
}

/* Hero */
.hero {
  padding-block: 96px 72px;
  background:
    radial-gradient(circle at 15% 20%, var(--brand-tint), transparent 45%),
    var(--paper);
}

.hero-inner {
  max-width: 760px;
  text-align: left;
}

.eyebrow {
  color: var(--brand-dark);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 12px;
}

.hero h1 {
  font-size: clamp(2rem, 4.2vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}

.hero-sub {
  color: var(--ink-soft);
  font-size: 1.1rem;
  max-width: 560px;
  margin: 0 0 32px;
}

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

/* Sections */
.section {
  padding-block: 72px;
}

.section-alt {
  background: var(--paper-alt);
}

.section-title {
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  letter-spacing: -0.01em;
  margin: 0 0 40px;
  text-align: center;
}

.grid {
  display: grid;
  gap: 20px;
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 900px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.card-icon {
  font-size: 1.6rem;
  margin-bottom: 12px;
}

.card h3 {
  font-size: 1rem;
  margin: 0 0 8px;
}

.card p {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0;
}

.step {
  text-align: center;
  padding: 8px;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  margin-bottom: 16px;
}

.step h3 {
  font-size: 1.05rem;
  margin: 0 0 8px;
}

.step p {
  color: var(--ink-soft);
  font-size: 0.92rem;
  margin: 0;
}

.cta {
  text-align: center;
}

.cta-inner h2 {
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  margin: 0 0 8px;
}

.cta-inner p {
  color: var(--ink-soft);
  margin: 0 0 28px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 40px;
  background: var(--paper-alt);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-copy {
  color: var(--ink-soft);
  font-size: 0.85rem;
  margin: 6px 0 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.85rem;
}

.footer-links a {
  color: var(--ink-soft);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--brand-dark);
}

@media (max-width: 640px) {
  .nav {
    display: none;
  }
}