:root {
  --bg: #0b0f14;
  --panel: #0f141b;
  --text: #e6f1ff;
  --muted: #98a2b3;
  --neon: #33ffd1;
  --neon-2: #7c5cff;
  --border: #1c2330;
  --shadow: 0 10px 30px rgba(0,0,0,0.45);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(124,92,255,0.1), transparent), var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.skip-link {
  position: absolute; left: -999px; top: auto; width: 1px; height: 1px; overflow: hidden;
}
.skip-link:focus { position: static; width: auto; height: auto; padding: 8px 12px; background: var(--panel); border: 1px solid var(--border); }

.container { width: min(1200px, 92%); margin: 0 auto; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(140%) blur(8px);
  background: linear-gradient(180deg, rgba(11,15,20,0.85), rgba(11,15,20,0.55));
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; }
.header-right { display: flex; align-items: center; gap: 18px; }
.tel { color: var(--text); text-decoration: none; font-weight: 600; letter-spacing: 0.2px; }
.tel:hover { color: var(--neon); }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-img { height: 40px; width: auto; display: block; filter: drop-shadow(0 0 10px rgba(51,255,209,0.35)) drop-shadow(0 0 6px rgba(124,92,255,0.25)); image-rendering: -webkit-optimize-contrast; }
.logo-img.white { filter: brightness(0) invert(1) drop-shadow(0 0 8px rgba(255,255,255,0.15)); }

.nav-toggle { display: none; }
.nav-list { display: flex; gap: 24px; list-style: none; margin: 0; padding: 0; }
.nav a { color: #cdd6e1; text-decoration: none; }
.nav a:hover { color: var(--text); }
.nav .cta { color: var(--bg); background: linear-gradient(90deg, var(--neon), var(--neon-2)); padding: 10px 14px; border-radius: 8px; box-shadow: 0 0 20px rgba(51,255,209,0.35); }

.hero { position: relative; overflow: clip; border-bottom: 1px solid var(--border); }
.hero .glow {
  position: absolute; inset: -20% -10% auto -10%; height: 75%;
  background: radial-gradient(600px 300px at 70% 30%, rgba(51,255,209,0.18), transparent),
              radial-gradient(500px 260px at 30% 10%, rgba(124,92,255,0.18), transparent);
  pointer-events: none;
}
.hero-inner { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; min-height: 78vh; padding: 48px 0 64px; }
.hero h1 { font-size: clamp(32px, 5vw, 56px); line-height: 1.05; margin: 0 0 16px; font-weight: 800; text-shadow: 0 0 18px rgba(0,0,0,0.4); }
.hero p { color: var(--text); margin: 0 0 28px; max-width: 60ch; }
.badge { display: inline-block; font-size: 12px; letter-spacing: 0.6px; color: var(--neon); border: 1px solid rgba(51,255,209,0.35); border-radius: 999px; padding: 6px 10px; margin-bottom: 10px; background: rgba(18,24,33,0.5); box-shadow: inset 0 0 0 1px rgba(51,255,209,0.15); }
.actions { display: flex; gap: 14px; }
.btn { display: inline-block; border: 1px solid var(--border); padding: 12px 16px; border-radius: 10px; color: var(--text); text-decoration: none; transition: transform 140ms ease, box-shadow 140ms ease; }
.btn.primary { background: linear-gradient(90deg, rgba(51,255,209,0.18), rgba(124,92,255,0.18)); border-color: transparent; box-shadow: 0 0 0 1px rgba(51,255,209,0.35) inset; }
.btn.ghost { background: transparent; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(0,0,0,0.4); }

.hero-visual { position: relative; aspect-ratio: 16/9; border: 1px solid var(--border); border-radius: 14px; background: linear-gradient(180deg, rgba(15,20,27,0.9), rgba(15,20,27,0.6)); box-shadow: var(--shadow); }
#networkCanvas { width: 100%; height: 100%; display: block; filter: drop-shadow(0 0 16px rgba(51,255,209,0.25)); }

.section { padding: 72px 0; border-top: 1px solid var(--border); }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.card { background: linear-gradient(180deg, rgba(18,24,33,0.9), rgba(18,24,33,0.6)); border: 1px solid var(--border); border-radius: 14px; padding: 22px; box-shadow: var(--shadow); }
.card h3 { margin-top: 6px; }

.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.step { background: rgba(18,24,33,0.6); border: 1px dashed var(--border); border-radius: 14px; padding: 22px; }
.step-num { color: var(--neon-2); font-weight: 700; }

.about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 24px; }
.about-list { margin: 12px 0 0; padding-left: 18px; color: var(--muted); }
.about-aside .about-card { background: linear-gradient(180deg, rgba(18,24,33,0.9), rgba(18,24,33,0.6)); border: 1px solid var(--border); border-radius: 14px; padding: 22px; box-shadow: var(--shadow); }

.blog-grid, .glossary-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.post.card h3 { margin: 6px 0 8px; }
.post.card a { color: var(--text); text-decoration: none; }
.post.card a:hover { color: var(--neon); }

/* High-contrast back link for article pages */
.back-link { display: inline-block; color: var(--text); text-decoration: none; border: 1px solid var(--border); border-radius: 10px; padding: 8px 10px; background: rgba(18,24,33,0.6); box-shadow: var(--shadow); }
.back-link:hover { color: var(--neon); border-color: rgba(51,255,209,0.35); }

.contact .contact-form { display: grid; gap: 16px; }
.contact .row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.contact label { display: grid; gap: 8px; }
.contact input, .contact textarea { background: rgba(15,20,27,0.7); border: 1px solid var(--border); border-radius: 10px; padding: 12px; color: var(--text); }
.contact input::placeholder, .contact textarea::placeholder { color: #6b7380; }
.switch { display: inline-flex; align-items: center; gap: 12px; padding: 8px 12px; background: rgba(18,24,33,0.6); border: 1px solid var(--border); border-radius: 999px; box-shadow: var(--shadow); }
.switch input { display: none; }
.switch .slider { position: relative; width: 46px; height: 26px; border-radius: 999px; background: #1c2330; border: 1px solid var(--border); box-shadow: inset 0 0 0 1px rgba(255,255,255,0.03); transition: background 160ms ease; }
.switch .slider::after { content: ''; position: absolute; left: 3px; top: 3px; width: 20px; height: 20px; border-radius: 50%; background: #aab2c0; transition: transform 160ms ease, background 160ms ease; box-shadow: 0 2px 6px rgba(0,0,0,0.4); }
.switch input:checked + .slider { background: linear-gradient(90deg, var(--neon), var(--neon-2)); border-color: transparent; }
.switch input:checked + .slider::after { background: #0b0f14; transform: translateX(20px); }
.switch .switch-label { color: var(--text); font-weight: 600; letter-spacing: .2px; }
.detailed-form { margin-top: 16px; border: 1px solid var(--border); border-radius: 14px; overflow: hidden; background: rgba(18,24,33,0.6); box-shadow: var(--shadow); }
.detailed-form iframe { width: 100%; height: 900px; border: 0; display: block; }

.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.faq-item { background: rgba(18,24,33,0.6); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; }
.faq-item summary { cursor: pointer; font-weight: 600; }
.faq-item p { color: var(--muted); margin: 8px 0 0; }

/* Wizard Form */
.wizard-form { margin-top: 32px; }
.wizard-progress { display: flex; justify-content: space-between; margin-bottom: 40px; padding: 0 8px; }
.progress-step { display: flex; flex-direction: column; align-items: center; flex: 1; position: relative; }
.progress-step:not(:last-child)::after { content: ''; position: absolute; top: 24px; left: 55%; width: 90%; height: 2px; background: var(--border); z-index: 0; }
.progress-step.active::after, .progress-step.completed::after { background: linear-gradient(90deg, var(--neon), var(--neon-2)); }
.step-icon { font-size: 32px; width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; background: rgba(18,24,33,0.6); border: 2px solid var(--border); border-radius: 50%; margin-bottom: 8px; position: relative; z-index: 1; }
.progress-step.active .step-icon { background: linear-gradient(180deg, rgba(51,255,209,0.15), rgba(124,92,255,0.15)); border-color: var(--neon); box-shadow: 0 0 16px rgba(51,255,209,0.3); }
.progress-step.completed .step-icon { background: rgba(51,255,209,0.2); border-color: var(--neon); }
.step-label { font-size: 12px; color: var(--muted); text-align: center; }
.progress-step.active .step-label { color: var(--text); font-weight: 600; }

.wizard-step { display: none; }
.wizard-step.active { display: block; }
.wizard-step h2 { margin: 0 0 24px; font-size: 28px; }
.wizard-step label { display: grid; gap: 8px; margin-bottom: 16px; }
.wizard-step label span { font-weight: 600; color: var(--text); }
.wizard-step input[type="text"], .wizard-step input[type="email"], .wizard-step input[type="tel"], .wizard-step input[type="date"], .wizard-step select, .wizard-step textarea { background: rgba(15,20,27,0.7); border: 1px solid var(--border); border-radius: 10px; padding: 12px; color: var(--text); width: 100%; }
.wizard-step input:focus, .wizard-step select:focus, .wizard-step textarea:focus { outline: none; border-color: var(--neon); box-shadow: 0 0 0 2px rgba(51,255,209,0.15); }

.radio-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.radio-card { background: rgba(18,24,33,0.6); border: 2px solid var(--border); border-radius: 12px; padding: 16px; cursor: pointer; transition: all 140ms ease; display: flex; flex-direction: column; align-items: center; text-align: center; }
.radio-card:hover { border-color: rgba(51,255,209,0.4); transform: translateY(-2px); }
.radio-card input { display: none; }
.radio-card input:checked + .card-icon { transform: scale(1.2); }
.radio-card:has(input:checked) { border-color: var(--neon); background: linear-gradient(180deg, rgba(51,255,209,0.1), rgba(124,92,255,0.1)); box-shadow: 0 0 20px rgba(51,255,209,0.25); }
.card-icon { font-size: 40px; margin-bottom: 8px; display: block; transition: transform 140ms ease; }
.card-title { font-weight: 600; margin-bottom: 6px; display: block; }
.card-desc { font-size: 13px; color: var(--muted); display: block; }

.checkbox-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; margin-bottom: 24px; }
.checkbox-card { background: rgba(18,24,33,0.6); border: 2px solid var(--border); border-radius: 12px; padding: 14px 16px; cursor: pointer; transition: all 140ms ease; display: flex; align-items: center; gap: 12px; }
.checkbox-card:hover { border-color: rgba(51,255,209,0.4); transform: translateY(-1px); }
/* Hide native checkbox to match icon tiles */
.checkbox-card input { display: none; }
.checkbox-card:has(input:checked) { border-color: var(--neon); background: linear-gradient(180deg, rgba(51,255,209,0.1), rgba(124,92,255,0.1)); box-shadow: 0 0 18px rgba(51,255,209,0.2); }
.checkbox-label { display: flex; align-items: center; gap: 8px; cursor: pointer; }

.wizard-actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 32px; }
.review-summary { background: rgba(18,24,33,0.6); border: 1px solid var(--border); border-radius: 12px; padding: 20px; margin-bottom: 24px; }
.review-summary h3 { margin: 0 0 12px; font-size: 18px; }
.review-summary p { margin: 6px 0; color: var(--muted); }
.review-summary strong { color: var(--text); }

.site-footer { border-top: 1px solid var(--border); padding: 24px 0; color: var(--muted); }

[data-reveal] { opacity: 0; transform: translateY(12px); transition: opacity 500ms ease, transform 500ms ease; }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 960px) {
  .logo-img { height: 32px; }
  .hero-inner { grid-template-columns: 1fr; gap: 24px; padding-top: 24px; }
  .grid, .steps { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .blog-grid, .glossary-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .contact .row { grid-template-columns: 1fr; }
  .nav-toggle { display: inline-flex; background: transparent; color: var(--muted); border: 1px solid var(--border); padding: 8px 10px; border-radius: 8px; }
  .nav-list { display: none; position: absolute; right: 4%; top: 58px; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 12px; flex-direction: column; gap: 10px; box-shadow: var(--shadow); }
  .nav-list.is-open { display: flex; }
  .tel { display: none; }
  .wizard-progress { flex-wrap: wrap; gap: 8px; }
  .progress-step { min-width: calc(33.333% - 12px); }
  .step-label { font-size: 11px; }
  .radio-grid { grid-template-columns: 1fr; }
  .checkbox-grid { grid-template-columns: 1fr; }
  .wizard-actions { flex-direction: column-reverse; }
  .wizard-actions .btn { width: 100%; }
}