:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-soft: #f7f9ff;
  --text: #1d2a44;
  --muted: #51607f;
  --primary: #2563eb;
  --secondary: #7c3aed;
  --accent: #0ea5e9;
  --success: #16a34a;
  --border: #dbe4f5;
  --max: 1100px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.6;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.hero {
  padding: 5rem 0 3rem;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(700px 280px at 10% 5%, rgba(37, 99, 235, 0.12), transparent 60%),
    radial-gradient(700px 280px at 95% 0%, rgba(124, 58, 237, 0.14), transparent 62%),
    #ffffff;
}

.eyebrow {
  color: var(--success);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
}

h1 {
  font-size: clamp(2rem, 3vw, 3.2rem);
  margin: 0;
  color: #132449;
}

.brand-title {
  display: inline-flex;
  align-items: baseline;
  gap: 0.15rem;
  font-size: clamp(2.3rem, 4.2vw, 3.8rem);
  line-height: 1.05;
  margin: 0;
  letter-spacing: -0.03em;
}

.brand-web {
  color: #1d4ed8;
  text-shadow: 0 10px 20px rgba(29, 78, 216, 0.18);
}

.brand-able {
  background: linear-gradient(90deg, #7c3aed, #0ea5e9);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.slogan {
  margin: 0.55rem 0 0;
  max-width: 52ch;
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: #27406d;
  font-weight: 600;
}

.subtitle {
  margin-top: 1rem;
  max-width: 70ch;
  color: var(--muted);
}

.hero-badges {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.hero-badges span {
  display: inline-flex;
  align-items: center;
  border: 1px solid #cfe0ff;
  background: #f3f8ff;
  color: #214075;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
}

.hero-actions {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.7rem;
  padding: 0.7rem 1rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
}

.btn-secondary {
  background: #fff;
  border-color: #c9d6f0;
  color: #1f3a77;
}

.section {
  padding: 3rem 0;
}

.section-alt {
  background: var(--surface-soft);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

h2 {
  font-size: clamp(1.4rem, 2vw, 2rem);
  margin: 0 0 1.2rem;
  color: #17326a;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 0.9rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  padding: 1rem;
  box-shadow: 0 5px 18px rgba(16, 45, 113, 0.06);
}

.feature {
  border-top: 5px solid #bfd4ff;
}

.f1 {
  border-top-color: #2563eb;
}

.f2 {
  border-top-color: #7c3aed;
}

.f3 {
  border-top-color: #0891b2;
}

.f4 {
  border-top-color: #dc2626;
}

.f5 {
  border-top-color: #ea580c;
}

.f6 {
  border-top-color: #16a34a;
}

.f7 {
  border-top-color: #334155;
}

.card h3 {
  margin-top: 0;
  font-size: 1rem;
  color: #1a3365;
}

.card p {
  margin-bottom: 0.65rem;
  color: var(--muted);
}

.card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: #3f5176;
}

.card li::marker {
  color: #2563eb;
}

.howto {
  background: #ffffff;
  border: 1px solid var(--border);
  border-left: 5px solid var(--accent);
  border-radius: 0.9rem;
  padding: 1rem 1.1rem;
  margin-bottom: 0.9rem;
  box-shadow: 0 5px 16px rgba(18, 59, 143, 0.06);
}

.howto h3 {
  margin-top: 0;
  color: #1b3f83;
}

.howto ol {
  margin: 0.4rem 0 0;
  padding-left: 1.2rem;
  color: #41547e;
}

.quickstart-list {
  margin-top: 0;
  padding-left: 1.2rem;
  color: #405477;
}

.note {
  margin-top: 1rem;
  color: #9f1239;
  background: #fff1f2;
  border: 1px solid #fecdd3;
  border-radius: 0.6rem;
  padding: 0.7rem 0.85rem;
}

footer {
  border-top: 1px solid var(--border);
  background: #fbfcff;
  padding: 1.2rem 0 2rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

footer a {
  color: #1d4ed8;
}

@media (max-width: 640px) {
  .hero {
    padding-top: 4rem;
  }

  .btn {
    width: 100%;
  }
}