:root {
  --bg: #081427;
  --bg-alt: #0d1d36;
  --surface: #102544;
  --text: #f3f7ff;
  --muted: #b1c0d9;
  --line: #274770;
  --accent: #4ec7b8;
  --accent-2: #6ea8ff;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Manrope", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(1200px circle at 10% 10%, #15325c 0%, var(--bg) 45%, #060f1f 100%);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
}

.topbar {
  border-bottom: 1px solid var(--line);
  background: rgba(8, 20, 39, 0.8);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.dev-label {
  background: #12315a;
  color: #cde6ff;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.35rem 0;
  text-align: center;
  border-bottom: 1px solid #2f5e97;
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.brand img {
  width: 34px;
  height: 34px;
  object-fit: contain;
  border-radius: 8px;
  background: #ffffff;
  padding: 2px;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 8px;
  padding: 0.3rem 0.55rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  font-size: 0.93rem;
  color: var(--muted);
}

.nav-links a {
  padding: 0.28rem 0.35rem;
}

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

main {
  padding: 2.2rem 0 4rem;
}

section {
  margin: 2.5rem 0;
}

.hero {
  padding: 3rem 0 2rem;
}

.badge {
  display: inline-block;
  font-size: 0.82rem;
  color: #d7f2ff;
  background: rgba(110, 168, 255, 0.15);
  border: 1px solid rgba(110, 168, 255, 0.45);
  padding: 0.38rem 0.7rem;
  border-radius: 999px;
}

h1, h2, h3 {
  line-height: 1.25;
  margin: 0 0 0.8rem;
}

h1 {
  font-size: clamp(1.9rem, 3.4vw, 3rem);
  max-width: 18ch;
}

h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
}

p {
  margin: 0 0 1rem;
  color: var(--muted);
  max-width: 75ch;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.25rem;
}

.btn {
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 0.7rem 1rem;
  font-weight: 600;
  font-size: 0.95rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #62d8cb);
  color: #062733;
}

.btn-secondary {
  border-color: var(--line);
  color: #dbe9ff;
}

.grid {
  display: grid;
  gap: 1rem;
}

.cards {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  background: linear-gradient(180deg, rgba(22, 44, 78, 0.95), rgba(10, 27, 50, 0.95));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
}

.steps {
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}

.step {
  background: rgba(16, 37, 68, 0.8);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
}

.step strong {
  display: block;
  color: #d6ecff;
}

.panel {
  background: rgba(16, 37, 68, 0.88);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.2rem;
}

form {
  display: grid;
  gap: 0.8rem;
  margin-top: 0.8rem;
}

label {
  font-size: 0.9rem;
  color: #d4e5ff;
}

input,
textarea {
  width: 100%;
  border: 1px solid #34557f;
  background: #0e203b;
  color: var(--text);
  border-radius: 9px;
  padding: 0.65rem 0.75rem;
  font: inherit;
}

textarea {
  min-height: 130px;
  resize: vertical;
}

button[disabled] {
  cursor: not-allowed;
  opacity: 0.7;
}

.notice {
  color: #b9d9ff;
  font-size: 0.9rem;
}

#language-switcher {
  border: 1px solid #34557f;
  background: #0e203b;
  color: #dff1ff;
  border-radius: 8px;
  padding: 0.35rem 0.45rem;
  font: inherit;
  font-size: 0.88rem;
}

.content-page h1 {
  max-width: unset;
}

ul {
  margin-top: 0.3rem;
  padding-left: 1.15rem;
  color: var(--muted);
}

footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2.3rem;
  background: rgba(3, 9, 18, 0.7);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem 2rem;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 1rem;
  color: #d3e5ff;
}

@media (max-width: 900px) {
  .nav-toggle {
    display: inline-block;
  }

  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 0.2rem;
    padding-top: 0.2rem;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-row {
    flex-wrap: wrap;
  }
}