:root {
  --bg: #fafafb;
  --surface: #ffffff;
  --fg: #15172a;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-fg: #ffffff;
  --border: #e2e8f0;
  --hero-grad-from: #eef2ff;
  --hero-grad-to: #f8fafc;
  --shadow-sm: 0 2px 6px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1020;
    --surface: #141a30;
    --fg: #f1f5f9;
    --muted: #94a3b8;
    --accent: #60a5fa;
    --accent-fg: #0b1020;
    --border: #2a3349;
    --hero-grad-from: #1a2547;
    --hero-grad-to: #0e1428;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg { max-width: 100%; }

.lp-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* === Header / Nav === */

.lp-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  -webkit-backdrop-filter: saturate(160%) blur(8px);
  backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--border);
}

.lp-header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.lp-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--fg);
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
}
.lp-logo-icon {
  font-size: 1.6rem;
  line-height: 1;
  color: var(--accent);
}

.lp-nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  font-size: 0.95rem;
}
.lp-nav a {
  color: var(--muted);
  text-decoration: none;
}
.lp-nav a:hover { color: var(--fg); }
.lp-nav a.lp-nav-cta {
  background: var(--accent);
  color: var(--accent-fg);
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
  font-weight: 600;
}
.lp-nav a.lp-nav-cta:hover { color: var(--accent-fg); filter: brightness(1.05); text-decoration: none; }

.lp-nav a.lp-lang-switch {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  border: 1px solid var(--border);
  padding: 0.3rem 0.55rem;
  border-radius: 6px;
  color: var(--muted);
}
.lp-nav a.lp-lang-switch:hover {
  color: var(--fg);
  text-decoration: none;
  background: var(--surface);
}

@media (max-width: 580px) {
  .lp-nav a:not(.lp-nav-cta) { display: none; }
}

/* === Hero === */

.lp-hero {
  padding: 4rem 0 3.5rem;
  background: linear-gradient(180deg, var(--hero-grad-from), var(--hero-grad-to));
  border-bottom: 1px solid var(--border);
}

.lp-hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: center;
}

@media (max-width: 820px) {
  .lp-hero-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.lp-hero-text h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.15;
  margin: 0 0 1rem;
  letter-spacing: -0.01em;
}

.lp-lead {
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  color: var(--muted);
  margin: 0 0 1.6rem;
}

.lp-cta-row {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}
.lp-cta-center { justify-content: center; margin-top: 1.5rem; }

.lp-btn {
  display: inline-block;
  padding: 0.75rem 1.3rem;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.05s, filter 0.15s;
}
.lp-btn:hover { text-decoration: none; }
.lp-btn-primary {
  background: var(--accent);
  color: var(--accent-fg);
}
.lp-btn-primary:hover { filter: brightness(1.06); }
.lp-btn-primary:active { transform: translateY(1px); }
.lp-btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--fg);
}
.lp-btn-ghost:hover { background: var(--surface); }
.lp-btn-large {
  padding: 0.95rem 1.7rem;
  font-size: 1.05rem;
}

.lp-fineprint {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.lp-hero-visual {
  display: flex;
  justify-content: center;
}
.lp-hero-svg {
  width: 100%;
  max-width: 380px;
  color: var(--fg);
  filter: drop-shadow(var(--shadow-md));
}

/* === Sections === */

.lp-section {
  padding: 4rem 0;
}
.lp-section-alt {
  background: var(--surface);
  border-block: 1px solid var(--border);
}
.lp-section h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  margin: 0 0 2rem;
  letter-spacing: -0.01em;
}

/* === Feature-Grid === */

.lp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem;
}

.lp-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  box-shadow: var(--shadow-sm);
}
.lp-card h3 {
  margin: 0.6rem 0 0.4rem;
  font-size: 1.1rem;
}
.lp-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}
.lp-card-icon {
  font-size: 1.7rem;
  line-height: 1;
}

/* === Steps === */

.lp-steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
  max-width: 760px;
}
.lp-steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.3rem;
}
.lp-step-num {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-fg);
  font-weight: 700;
  font-size: 1.05rem;
}
.lp-steps h3 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
}
.lp-steps p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* === FAQ === */

.lp-faq {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1.1rem;
  margin-bottom: 0.7rem;
}
.lp-faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.lp-faq summary::after {
  content: "+";
  font-size: 1.3rem;
  color: var(--muted);
}
.lp-faq[open] summary::after { content: "−"; }
.lp-faq p {
  margin: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* === Footer === */

.lp-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 1.6rem 0;
}
.lp-footer-inner {
  display: flex;
  justify-content: center;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}
.lp-footer-inner a {
  color: var(--muted);
}
.lp-footer-inner a:hover { color: var(--accent); }