:root {
  --ink: #0f172a;
  --ink-muted: #475569;
  --paper: #ffffff;
  --bg: #f8fafc;
  --brand: #4f46e5;
  --brand-dark: #4338ca;
  --accent-pink: #f04171;
  --accent-cyan: #17c3ce;
  --border: #e2e8f0;
  --shadow: 0 12px 40px rgba(15, 23, 42, 0.08);
  --radius: 14px;
  --max: 1080px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

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

img {
  max-width: 100%;
  height: auto;
}

.landing-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.landing-header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.landing-logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
}

.landing-logo img {
  width: 140px;
  height: auto;
}

.landing-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.landing-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-muted);
  padding: 0.45rem 0.7rem;
  border-radius: 8px;
}

.landing-nav a:hover {
  color: var(--brand);
  background: #eef2ff;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.15rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s, background 0.12s;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand), #6366f1);
  color: #fff;
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.28);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--brand-dark), var(--brand));
}

.btn-outline {
  background: var(--paper);
  color: var(--brand);
  border: 2px solid #c7d2fe;
}

.btn-outline:hover {
  border-color: var(--brand);
  background: #eef2ff;
}

.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3rem 1.25rem 2.5rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--brand);
  background: #eef2ff;
  border: 1px solid #c7d2fe;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  margin-bottom: 0.85rem;
}

.hero h1 {
  font-size: clamp(1.85rem, 4vw, 2.65rem);
  line-height: 1.15;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.hero-lead {
  font-size: 1.08rem;
  color: var(--ink-muted);
  margin: 0 0 1.35rem;
  max-width: 36rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.hero-note {
  font-size: 0.88rem;
  color: var(--ink-muted);
  margin: 0;
}

.hero-visual {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  position: relative;
  overflow: hidden;
}

.hero-visual::before {
  content: '';
  position: absolute;
  inset: -30% auto auto -20%;
  width: 70%;
  height: 70%;
  background: radial-gradient(circle, rgba(23, 195, 206, 0.18), transparent 70%);
  pointer-events: none;
}

.mock-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  font-size: 0.68rem;
}

.mock-grid .head {
  background: #f1f5f9;
  border-radius: 6px;
  padding: 0.35rem 0.2rem;
  text-align: center;
  font-weight: 600;
  color: #64748b;
}

.mock-slot {
  min-height: 52px;
  border-radius: 8px;
  border: 1px dashed #cbd5e1;
  background: #fafafa;
  padding: 0.25rem;
}

.mock-slot.filled {
  border-style: solid;
  border-color: transparent;
  color: #fff;
  font-weight: 600;
  font-size: 0.62rem;
  line-height: 1.2;
}

.mock-slot.c1 { background: linear-gradient(145deg, #f04171, #e11d48); }
.mock-slot.c2 { background: linear-gradient(145deg, #17c3ce, #0891b2); }
.mock-slot.c3 { background: linear-gradient(145deg, #4f46e5, #6366f1); }
.mock-slot.c4 { background: linear-gradient(145deg, #f59e0b, #d97706); }

section {
  padding: 2.75rem 1.25rem;
}

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.section-title {
  text-align: center;
  margin: 0 0 0.5rem;
  font-size: clamp(1.45rem, 3vw, 1.9rem);
}

.section-lead {
  text-align: center;
  color: var(--ink-muted);
  max-width: 40rem;
  margin: 0 auto 2rem;
}

.features {
  background: var(--paper);
  border-block: 1px solid var(--border);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
}

.feature-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.02rem;
}

.feature-card p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.94rem;
}

.feature-icon {
  font-size: 1.35rem;
  margin-bottom: 0.35rem;
}

.audience {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.audience-card {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem;
  box-shadow: var(--shadow);
}

.audience-card h3 {
  margin-top: 0;
}

.audience-card ul {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--ink-muted);
}

.faq details {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  margin-bottom: 0.65rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
}

.faq p {
  margin: 0.65rem 0 0;
  color: var(--ink-muted);
}

.cta-band {
  background: linear-gradient(135deg, #312e81, var(--brand));
  color: #fff;
  text-align: center;
}

.cta-band .section-lead {
  color: #e0e7ff;
}

.cta-band .btn-primary {
  background: #fff;
  color: var(--brand);
  box-shadow: none;
}

.cta-band .btn-outline {
  border-color: rgba(255, 255, 255, 0.45);
  color: #fff;
  background: transparent;
}

.landing-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.25rem 2.5rem;
  color: var(--ink-muted);
  font-size: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
}

.landing-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 2rem;
  }

  .hero-visual {
    order: -1;
  }

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

  .landing-nav a:not(.btn) {
    display: none;
  }
}