:root {
  --blue: #0F05A0;
  --blue-light: #e8e7f6;
  --accent: #009ee0;
  --text: #1a1a2e;
  --text-light: #555;
  --bg: #f5f5fa;
  --card-bg: #fff;
  --radius: 12px;
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  cursor: default;
  user-select: none;
}

pre, code {
  user-select: text;
  cursor: text;
}

nav {
  background: #fff;
  border-bottom: 1px solid #e0e0e0;
  padding: 0 3rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  overflow-x: auto;
}

nav a {
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-light);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

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

nav a.active {
  color: var(--blue);
  border-bottom-color: var(--blue);
  font-weight: 700;
}

header {
  background: var(--blue);
  color: #fff;
  padding: 1.2rem 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.header-eye {
  position: absolute;
  left: -80px;
  top: 50%;
  transform: translateY(-50%);
  width: 220px;
  height: 220px;
  object-fit: cover;
  border-radius: 50%;
  pointer-events: none;
}

.header-text {
  text-align: center;
  flex: 1;
  z-index: 1;
}

header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

header p {
  font-size: 1rem;
  opacity: 0.88;
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.4;
}

.header-logo {
  width: 100px;
  height: 100px;
  flex-shrink: 0;
  object-fit: contain;
  z-index: 1;
}

main {
  flex: 1;
  padding: 2.5rem 3rem;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
  color: inherit;
}

.card:hover, .card:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.10);
  border-color: var(--accent);
  outline: none;
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.card p {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.55;
  flex: 1;
}

.card-cta {
  margin-top: 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.card-cta::after {
  content: '\2192';
  transition: transform 0.15s ease;
}

.card:hover .card-cta::after {
  transform: translateX(4px);
}

footer {
  text-align: center;
  padding: 1.5rem 3rem 2rem;
  color: var(--text-light);
  font-size: 0.95rem;
}

footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

footer a:hover {
  text-decoration: underline;
}

/* Intro */
.intro {
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
  margin-bottom: 2.5rem;
}

.intro-text {
  flex: 1;
}

.intro-text h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.intro-text p {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-light);
  margin-bottom: 0.75rem;
}

.intro-image {
  width: 320px;
  flex-shrink: 0;
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

/* Section titles */
.section-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--text);
}

/* Feature / Benefit boxes */
.features, .benefits {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.feature, .benefit {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.feature strong, .benefit strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 0.3rem;
  color: var(--text);
}

.feature span, .benefit span {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.5;
}

/* CTA banner */
.try-cta {
  background: var(--blue);
  color: #fff;
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  margin-bottom: 2.5rem;
}

.try-cta h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.try-cta p {
  font-size: 1rem;
  opacity: 0.88;
  margin-bottom: 1rem;
}

.try-cta a {
  display: inline-block;
  background: #fff;
  color: var(--blue);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.7rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  transition: transform 0.15s ease;
}

.try-cta a:hover {
  transform: scale(1.03);
}

/* Info note */
.info-note, .tech-note {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
}

.info-note a, .tech-note a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.info-note a:hover, .tech-note a:hover {
  text-decoration: underline;
}

/* Steps */
.steps {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  margin-bottom: 2.5rem;
}

.steps h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text);
}

.steps ol {
  list-style: none;
  counter-reset: step;
  padding: 0;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding-left: calc(28px + 0.75rem);
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--text-light);
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
}

.steps li a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.steps li a:hover {
  text-decoration: underline;
}

/* Auto-reset overlay */
.reset-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 5, 160, 0.92);
  color: #fff;
  z-index: 1000;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.reset-overlay.visible {
  display: flex;
}

.reset-overlay h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.reset-overlay p {
  font-size: 1.3rem;
  opacity: 0.85;
}