:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --text: #172033;
  --muted: #5f6b7a;
  --accent: #2563eb;
  --accent-dark: #123e95;
  --accent-soft: #dcecff;
  --border: #dfe7f2;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --radius-lg: 24px;
  --radius-md: 16px;
  --shadow-soft: 0 12px 30px rgba(15, 23, 42, 0.06);
  --shadow-strong: 0 24px 60px rgba(18, 62, 149, 0.18);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "Apple SD Gothic Neo", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f9fbff 0%, var(--bg) 100%);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3 { letter-spacing: -0.01em; }
ul { margin: 0; }

/* ---------- Header ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: rgba(23, 32, 51, 0.95);
  backdrop-filter: blur(10px);
  color: white;
}
.logo {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: white;
}
nav ul {
  display: flex;
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}
nav a {
  color: #dbe6f8;
  font-size: 0.95rem;
}
nav a:hover,
nav a.active {
  color: white;
  font-weight: 700;
}

/* ---------- Hero ---------- */
.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: 40px 24px 80px;
  background: radial-gradient(circle at top left, #6ea8ff 0%, #2563eb 40%, #123e95 100%);
  color: white;
  overflow: hidden;
  position: relative;
}
.hero-grid {
  max-width: 1120px;
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 40px;
  align-items: center;
}
.hero-content {
  max-width: 760px;
}
.eyebrow {
  display: inline-block;
  margin: 0 0 12px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.2;
}
.hero-text {
  margin: 0 0 24px;
  font-size: 1.05rem;
  color: #e8f0ff;
  max-width: 680px;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.hero-side {
  display: grid;
  gap: 14px;
}
.hero-metric {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  backdrop-filter: blur(6px);
}
.hero-metric strong {
  display: block;
  font-size: 1.6rem;
}
.hero-metric span {
  font-size: 0.85rem;
  color: #dbe6f8;
}

.btn {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: white; color: var(--accent-dark); }
.btn-secondary { border: 1px solid rgba(255,255,255,0.35); color: white; }
.btn-block { width: 100%; text-align: center; }
.section .btn-primary,
.cta-band .btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: var(--shadow-strong);
}
.section .btn-secondary {
  border: 1px solid var(--border);
  color: var(--text);
}

/* ---------- Sections ---------- */
.section {
  padding: 80px 24px;
  max-width: 1120px;
  margin: 0 auto;
}
.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}
.section-heading h2 {
  margin: 0;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
}
.section-heading p {
  color: var(--muted);
  margin: 10px 0 0;
}
.section-heading.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: -24px;
}
.panel, .card, .timeline-card, .stat-box, .testimonial-card, .faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow-soft);
}
.panel { padding: 24px; }
.highlight { background: linear-gradient(135deg, #eef5ff, #ffffff); }

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.card, .timeline-card {
  padding: 24px;
}
.card h3, .timeline-card h3 { margin-top: 0; }
.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 14px;
}
.tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-dark);
  background: var(--accent-soft);
  padding: 3px 9px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

/* ---------- Stats band ---------- */
.stats-band {
  background: linear-gradient(135deg, #123e95, #2563eb);
  color: white;
  padding: 56px 24px;
}
.stats-grid {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  text-align: center;
}
.stats-grid .stat strong {
  display: block;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}
.stats-grid .stat span {
  font-size: 0.9rem;
  color: #dbe6f8;
}

/* ---------- Simulation ---------- */
.simulation {
  background: linear-gradient(135deg, #f7fbff, #eef5ff);
  border-radius: 28px;
}
.simulation-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.stat-box {
  padding: 24px;
  text-align: center;
}
.stat-box strong {
  display: block;
  font-size: 1.6rem;
  color: var(--accent-dark);
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}
.schedule-table th,
.schedule-table td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: right;
}
.schedule-table th {
  background: #f0f4ff;
  text-align: center;
}
.schedule-table tr:nth-child(even) {
  background: #fbfcff;
}

.risk-panel ul { margin: 0; padding-left: 20px; }
.risk-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.risk-panel.danger { border-color: #fbd5d5; }
.risk-panel.danger h3 { color: var(--danger); }
.risk-panel.success h3 { color: var(--success); }

/* ---------- Testimonials ---------- */
.testimonials {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.testimonial-card { padding: 24px; }
.testimonial-card .stars { color: #f5a623; margin-bottom: 10px; letter-spacing: 2px; }
.testimonial-card .who {
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--muted);
}

/* ---------- FAQ ---------- */
.faq-list { display: grid; gap: 12px; }
.faq-item { padding: 4px 20px; }
.faq-item summary {
  cursor: pointer;
  padding: 16px 0;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.3rem;
  color: var(--accent);
}
.faq-item[open] summary::after { content: "−"; }
.faq-item p {
  margin: 0 0 16px;
  color: var(--muted);
}

/* ---------- CTA band ---------- */
.cta-band {
  margin: 0 24px 80px;
  max-width: 1120px;
  margin-inline: auto;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at top right, #2563eb 0%, #123e95 70%);
  color: white;
  padding: 56px 40px;
  text-align: center;
}
.cta-band h2 { margin: 0 0 12px; }
.cta-band p { margin: 0 0 24px; color: #e8f0ff; }
.cta-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---------- Footer ---------- */
.footer {
  padding: 48px 24px 28px;
  color: var(--muted);
  border-top: 1px solid var(--border);
}
.footer-content {
  max-width: 560px;
  margin: 0 auto;
  display: grid;
  gap: 1px;
  text-align: center;
}
.footer-content .logo {
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--text);
}
.footer-content p {
  margin: 0;
  font-size: 0.95rem;
}
.footer-content .footer-copy {
  margin-top: 1px;
  font-size: 0.8rem;
  color: var(--muted);
  opacity: 0.85;
}

/* ---------- Contact form ---------- */
.contact-form { display: grid; gap: 14px; max-width: 520px; }
.contact-form input,
.contact-form textarea,
.calculator select,
.risk-panel select,
.risk-panel input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 0.95rem;
  font-family: inherit;
}
.contact-form textarea { min-height: 140px; resize: vertical; }
.form-status { font-size: 0.9rem; color: var(--success); min-height: 1.2em; }
.contact-form label,
.field-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
}
.field-label { margin-bottom: 14px; }
.field-label > input,
.field-label > select {
  margin-top: 6px;
  font-weight: 400;
  color: var(--text);
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 800px) {
  .intro-grid,
  .cards,
  .timeline,
  .simulation-grid,
  .stats-grid,
  .testimonials,
  .risk-grid {
    grid-template-columns: 1fr;
  }
  .topbar { flex-direction: column; gap: 10px; }
  .hero { min-height: auto; padding-top: 72px; }
}