* {
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  background: #020617;
  color: #e5e7eb;
  margin: 0;
  padding: 0;
}

/* HERO */

.hero {
  text-align: center;
  padding: 40px 20px;
  background: #020617;
}

.hero h1 {
  font-size: 2rem;
  margin-bottom: 10px;
}

.hero-subtitle {
  color: #9ca3af;
  max-width: 620px;
  margin: 0 auto 20px auto;
}

.hero-actions {
  margin-bottom: 10px;
}

.hero-trust {
  font-size: 0.85rem;
  color: #6b7280;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  margin: 4px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.btn-primary {
  background: #22c55e;
  color: #020617;
}

.btn-secondary {
  background: transparent;
  border: 1px solid #22c55e;
  color: #e5e7eb;
}

/* SECTIONS */

.section {
  padding: 40px 20px;
  max-width: 1100px;
  margin: 0 auto;
}

.section h2 {
  text-align: center;
  margin-bottom: 8px;
}

.section-intro {
  text-align: center;
  color: #9ca3af;
  max-width: 700px;
  margin: 0 auto 24px auto;
}

/* FEATURES */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.feature-card {
  background: #020617;
  border: 1px solid #1f2933;
  padding: 16px;
  border-radius: 10px;
  text-align: left;
}

.feature-card h3 {
  margin-top: 0;
  margin-bottom: 8px;
}

.section-cta {
  text-align: center;
  margin-top: 24px;
}

/* HOW IT WORKS */

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.step-card {
  background: #020617;
  border: 1px solid #1f2933;
  padding: 16px;
  border-radius: 10px;
  text-align: left;
}

/* ACCESS SECTION */

.access-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.access-block {
  background: #020617;
  border: 1px solid #1f2933;
  padding: 16px;
  border-radius: 10px;
}

.access-block h3 {
  margin-top: 0;
}

.notice-text {
  font-size: 0.9rem;
  color: #f97316;
}

/* CHAT SECTION */

.section-chat h2 {
  text-align: center;
}

.chatbox {
  width: 100%;
  height: 350px;
  margin: 20px auto 10px auto;
  background: #020617;
  border: 2px solid #22c55e;
  border-radius: 10px;
  padding: 12px;
  overflow-y: auto;
  font-size: 0.95rem;
}

.message {
  margin-bottom: 10px;
  text-align: left;
}

.message.user b {
  color: #22c55e;
}

.message.ai b {
  color: #38bdf8;
}

.input-area {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.input-area input {
  width: 65%;
  max-width: 500px;
  padding: 10px;
  border-radius: 6px;
  border: none;
  outline: none;
}

.input-area button {
  padding: 10px 20px;
  border-radius: 6px;
  border: none;
  outline: none;
  cursor: pointer;
  background: #22c55e;
  color: #020617;
  font-weight: 600;
}

.input-area button:disabled {
  opacity: 0.7;
  cursor: default;
}

.small-notice {
  margin-top: 10px;
  font-size: 0.8rem;
  color: #9ca3af;
  text-align: center;
}

/* FOOTER */

.footer {
  text-align: center;
  padding: 16px;
  font-size: 0.85rem;
  color: #6b7280;
  border-top: 1px solid #111827;
}

/* RESPONSIVE */

@media (max-width: 600px) {
  .hero h1 {
    font-size: 1.6rem;
  }

  .input-area input {
    width: 100%;
  }
}