:root {
  --bg: #ffffff;
  --panel: #f8f9fa;
  --text: #1a1a1a;
  --muted: #666666;
  --primary: #2563eb;
  --primary-strong: #1d4ed8;
  --line: #e5e7eb;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #f0f4f8 0%, var(--bg) 100%);
  color: var(--text);
}

a {
  color: var(--primary);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px clamp(16px, 3vw, 40px);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
}

.brand {
  color: var(--text);
  text-decoration: none;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

nav {
  display: flex;
  gap: 10px;
  align-items: center;
}

nav a {
  color: var(--text);
  text-decoration: none;
  padding: 10px 12px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.92rem;
}

nav a[aria-current="page"] {
  background: #f0f4f8;
}

.cta-link {
  border: 1px solid #d0d7e8;
}

main {
  width: min(1120px, 94vw);
  margin: 0 auto;
}

.section {
  padding: clamp(28px, 6vw, 64px) 0;
}

.hero {
  display: grid;
  gap: 24px;
  align-items: center;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: #2563eb;
}

h1 {
  margin: 0 0 14px;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.1;
}

h2 {
  margin-top: 0;
  font-size: clamp(1.25rem, 2vw, 1.8rem);
}

.lead {
  margin: 0 0 22px;
  color: var(--muted);
  max-width: 64ch;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.button {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  padding: 11px 16px;
  font-weight: 700;
}

.button.primary {
  background: linear-gradient(180deg, #2563eb, var(--primary-strong));
  color: #ffffff;
}

.button.secondary {
  border: 1px solid #d0d7e8;
  color: var(--text);
}

.card {
  background: linear-gradient(180deg, #ffffff, var(--panel));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.hero-photo {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
}

.feature-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.split {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: start;
}

.quote p {
  margin-top: 0;
  margin-bottom: 12px;
}

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

.cta-panel {
  text-align: center;
  border-top: 1px solid var(--line);
}

.placeholder-image {
  border: 1px dashed #d0d7e8;
  border-radius: 10px;
  min-height: 180px;
  display: grid;
  place-items: center;
  color: #888888;
  font-size: 0.95rem;
  background: var(--panel);
  margin-bottom: 10px;
}

.guide-layout {
  display: grid;
  gap: 16px;
}

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

.guide-screenshot {
  width: 100%;
  max-width: 280px;
  height: auto;
  display: block;
  margin: 14px auto 0;
  border-radius: 12px;
  border: 1px solid var(--line);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 24px clamp(16px, 3vw, 40px) 32px;
  text-align: center;
  color: var(--muted);
}

ol,
ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

li + li {
  margin-top: 8px;
}

.how-it-works {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.how-it-works-image {
  width: 100%;
  margin-bottom: 48px;
  display: flex;
  justify-content: center;
}

.how-it-works-image img {
  width: 100%;
  max-width: 1000px;
  height: auto;
  display: block;
}

.how-it-works-steps {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  width: 100%;
  max-width: 900px;
}

.step {
  text-align: center;
}

.step-image {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  margin: 0 auto 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
}

.step h3 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 1.1rem;
  color: var(--text);
}

.step p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
}