:root {
  --bg: #0b1e2d;
  --bg-panel: #0f2537;
  --bg-panel-alt: #10293d;
  --border: #1c3a4d;
  --text: #e7f6f4;
  --text-dim: #9fc3c7;
  --text-muted: #5fa8a0;
  --teal-start: #2dd4bf;
  --teal-end: #0ea5a0;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "DejaVu Sans", Verdana, Arial, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */

header {
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  max-width: 1080px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  font-size: 26px;
  letter-spacing: 0.5px;
}

.brand .io {
  background: linear-gradient(135deg, var(--teal-start), var(--teal-end));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

nav.links {
  display: flex;
  gap: 28px;
  font-size: 15px;
}

nav.links a {
  text-decoration: none;
  color: var(--text-dim);
  transition: color 0.15s ease;
}

nav.links a:hover,
nav.links a.active {
  color: var(--text);
}

/* Hero */

.hero {
  padding: 88px 0 56px;
  text-align: center;
}

.tagline {
  letter-spacing: 3px;
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 22px;
}

.hero h1 {
  font-size: 40px;
  font-weight: 400;
  max-width: 760px;
  margin: 0 auto 20px;
  line-height: 1.3;
}

.hero h1 strong {
  font-weight: 700;
  background: linear-gradient(135deg, var(--teal-start), var(--teal-end));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  max-width: 620px;
  margin: 0 auto 36px;
  color: var(--text-dim);
  font-size: 17px;
}

.badge {
  display: inline-block;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
  padding: 8px 16px;
  border-radius: 999px;
  margin-bottom: 8px;
}

/* Buttons */

.btn {
  display: inline-block;
  text-decoration: none;
  padding: 13px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.12s ease, opacity 0.12s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--teal-start), var(--teal-end));
  color: #06231f;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text);
  margin-left: 12px;
}

.btn-secondary:hover {
  border-color: var(--teal-start);
}

/* Sections */

section {
  padding: 56px 0;
}

.section-title {
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.section-heading {
  font-size: 26px;
  font-weight: 400;
  margin: 0 0 32px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
}

.panel.accent {
  background: var(--bg-panel-alt);
  border-color: var(--teal-end);
}

.panel h3 {
  font-size: 20px;
  font-weight: 400;
  margin: 0 0 20px;
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.feature-list li {
  display: flex;
  gap: 14px;
  margin-bottom: 20px;
}

.feature-list li:last-child {
  margin-bottom: 0;
}

.feature-list .mark {
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}

.panel:not(.accent) .mark {
  background: #16303f;
  color: var(--text-dim);
}

.panel.accent .mark {
  background: linear-gradient(135deg, var(--teal-start), var(--teal-end));
  color: #06231f;
}

.feature-list b {
  font-weight: 600;
}

.feature-list span.desc {
  color: var(--text-dim);
  font-size: 15px;
}

.strip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 28px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.strip .built-for {
  font-size: 15px;
  color: var(--text-dim);
}

.strip .built-for b {
  color: var(--text);
  font-weight: 600;
}

.strip .status {
  color: var(--teal-start);
  font-weight: 600;
  font-size: 15px;
}

.cta {
  text-align: center;
  padding: 72px 0;
}

.cta h2 {
  font-size: 28px;
  font-weight: 400;
  margin: 0 0 16px;
}

.cta p {
  color: var(--text-dim);
  margin: 0 0 28px;
}

/* Footer */

footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  color: var(--text-muted);
  font-size: 13px;
}

footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

footer a {
  text-decoration: none;
  color: var(--text-muted);
}

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

/* About page */

.about-body p {
  color: var(--text-dim);
  font-size: 17px;
  max-width: 720px;
}

.about-body h2 {
  font-size: 22px;
  font-weight: 400;
  margin-top: 48px;
}

/* Contact form */

.form-panel {
  max-width: 560px;
  margin: 0 auto;
}

label {
  display: block;
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.field {
  margin-bottom: 22px;
}

input[type="text"],
input[type="email"],
select,
textarea {
  width: 100%;
  background: #081724;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--teal-start);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

.form-note {
  color: var(--text-dim);
  font-size: 14px;
  margin-top: 18px;
}

.form-status {
  margin-top: 18px;
  font-size: 14px;
  display: none;
}

.form-status.visible {
  display: block;
}

@media (max-width: 760px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .hero h1 {
    font-size: 30px;
  }
  nav.links {
    display: none;
  }
}