:root {
  --bg0: #071218;
  --bg1: #0c1c24;
  --bg2: #122a33;
  --ink: #e8f2f4;
  --muted: #9bb4bc;
  --line: rgba(180, 220, 230, 0.14);
  --accent: #3de0c5;
  --accent-2: #f0b429;
  --danger: #ff6b6b;
  --max: 1120px;
  --font-display: "Syne", "Segoe UI", sans-serif;
  --font-body: "Manrope", "Segoe UI", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg0);
  line-height: 1.6;
  min-height: 100vh;
}

img {
  max-width: 100%;
  display: block;
}

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

.wrap {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

/* Atmosphere */
.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 500px at 12% -10%, rgba(61, 224, 197, 0.18), transparent 60%),
    radial-gradient(700px 420px at 90% 8%, rgba(240, 180, 41, 0.12), transparent 55%),
    linear-gradient(180deg, #071218 0%, #0a171e 45%, #071218 100%);
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(61, 224, 197, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 224, 197, 0.08) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
  pointer-events: none;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: rgba(7, 18, 24, 0.72);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 0;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.05rem;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}

.brand-sub {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--ink);
}

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  background: rgba(18, 42, 51, 0.7);
}

.lang-switch button {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.8rem;
  padding: 0.4rem 0.7rem;
  cursor: pointer;
}

.lang-switch button[aria-pressed="true"] {
  background: rgba(61, 224, 197, 0.18);
  color: var(--ink);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  padding: 0.4rem 0.65rem;
  border-radius: 0.5rem;
  font: inherit;
}

/* Hero */
.hero {
  position: relative;
  min-height: 0;
  display: grid;
  align-items: start;
  padding: 3.25rem 0 3.5rem;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(7, 18, 24, 0.35), rgba(7, 18, 24, 0.85)),
    radial-gradient(circle at 70% 40%, rgba(61, 224, 197, 0.2), transparent 42%);
  z-index: 0;
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(transparent 0%, rgba(7, 18, 24, 0.55) 70%, var(--bg0) 100%),
    repeating-linear-gradient(
      -18deg,
      transparent,
      transparent 40px,
      rgba(61, 224, 197, 0.04) 40px,
      rgba(61, 224, 197, 0.04) 41px
    );
  animation: drift 18s linear infinite;
}

@keyframes drift {
  from { background-position: 0 0, 0 0; }
  to { background-position: 0 0, 120px 80px; }
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 42rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  line-height: 1.02;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
  animation: rise 0.9s ease both;
}

.hero p,
.hero-lead {
  margin: 0 0 1.75rem;
  color: var(--muted);
  font-size: clamp(1rem, 2.1vw, 1.2rem);
  max-width: 44rem;
  line-height: 1.55;
  white-space: normal;
  animation: rise 0.9s ease 0.12s both;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  animation: rise 0.9s ease 0.22s both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.25rem;
  border-radius: 0.55rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

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

.btn-primary {
  background: var(--accent);
  color: #04201a;
}

.btn-ghost {
  border-color: var(--line);
  background: rgba(18, 42, 51, 0.45);
  color: var(--ink);
}

/* Sections */
section {
  padding: 3.5rem 0;
}

.section-head {
  margin-bottom: 2rem;
  max-width: 38rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  margin: 0 0 0.6rem;
  letter-spacing: -0.01em;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.product-list {
  display: grid;
  gap: 1.25rem;
}

.product {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
  align-items: start;
  transition: background 0.25s ease;
}

.product:last-child {
  border-bottom: 1px solid var(--line);
}

.product:hover {
  background: rgba(61, 224, 197, 0.04);
}

.product-index {
  font-family: var(--font-display);
  color: var(--accent);
  font-size: 1.1rem;
  padding-top: 0.2rem;
}

.product h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
}

.product .lead {
  margin: 0 0 0.85rem;
  color: var(--muted);
}

.product ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink);
}

.product li {
  margin: 0.25rem 0;
}

.about-grid,
.contact-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1.2fr 0.8fr;
}

.panel {
  border-top: 1px solid var(--line);
  padding-top: 1.25rem;
}

.panel h3 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
}

.panel p,
.panel li {
  color: var(--muted);
}

.panel ul {
  margin: 0;
  padding-left: 1.1rem;
}

.contact a {
  color: var(--accent);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

@media (max-width: 820px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.25rem 1rem;
    background: rgba(7, 18, 24, 0.96);
    border-bottom: 1px solid var(--line);
  }

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

  .nav-links li {
    padding: 0.55rem 0;
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

.more {
  margin: 0.75rem 0 1rem;
  color: var(--muted);
  max-width: 42rem;
}

.flow-list {
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  border-top: 1px solid var(--line);
}

.flow-list li {
  display: grid;
  gap: 0.35rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}

.flow-list strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.flow-list span {
  color: var(--muted);
}

.audience {
  margin-top: 0.5rem;
}


.product-actions {
  margin-top: 1.25rem;
}

.btn-download {
  font-size: 0.95rem;
  padding: 0.7rem 1.1rem;
}