*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0a0f;
  --bg-card: #13131a;
  --bg-card-hover: #1a1a24;
  --border: #1e1e2e;
  --text: #e8e8f0;
  --text-muted: #6b6b8a;
  --accent: #7c6af7;
  --accent-light: #9d8fff;
  --highlight: #a78bfa;
  --green: #34d399;
  --radius: 12px;
  --font: 'Inter', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}

/* NAV */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
}

.nav-inner {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
}

.logo-icon {
  flex-shrink: 0;
  display: block;
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-family: var(--font);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
  border: none;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-sm:hover { background: var(--bg-card-hover); border-color: var(--accent); }

.btn-primary {
  padding: 14px 28px;
  font-size: 16px;
  background: var(--accent);
  color: #fff;
  white-space: nowrap;
}

.btn-primary:hover { background: var(--accent-light); transform: translateY(-1px); }

/* HERO */
.hero {
  padding: 100px 0 80px;
  text-align: center;
}

.hero-video {
  max-width: 720px;
  margin: 0 auto 40px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.hero-video video {
  width: 100%;
  display: block;
}

.badge {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(124, 106, 247, 0.12);
  border: 1px solid rgba(124, 106, 247, 0.3);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-light);
  margin-bottom: 28px;
  letter-spacing: 0.3px;
}

.hero h1 {
  font-size: clamp(36px, 6vw, 60px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
}

.highlight { color: var(--highlight); }

.subheadline {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

.subheadline em { color: var(--text); font-style: normal; }

/* KIT FORM */
.kit-form-wrapper {
  max-width: 480px;
  margin: 0 auto;
}


.form-placeholder {
  display: flex;
  gap: 8px;
}

.form-placeholder input {
  flex: 1;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  outline: none;
  transition: border-color 0.15s;
}

.form-placeholder input:focus { border-color: var(--accent); }
.form-placeholder input::placeholder { color: var(--text-muted); }

.form-note {
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

.form-success {
  font-size: 15px;
  color: var(--green);
  padding: 14px 0;
  font-weight: 500;
}

.form-msg {
  margin-top: 10px;
  font-size: 13px;
}

.form-msg[data-type="success"] { color: var(--green); }
.form-msg[data-type="error"] { color: #f87171; }

/* PROBLEM */
.problem {
  padding: 80px 0;
  border-top: 1px solid var(--border);
}

.problem h2, .solution h2, .sources h2, .comparison h2, .cta h2 {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 700;
  letter-spacing: -0.8px;
  margin-bottom: 16px;
  text-align: center;
}

.section-sub {
  text-align: center;
  color: var(--text-muted);
  font-size: 17px;
  margin-bottom: 48px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 40px 0 32px;
}

.step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.step-illo {
  background: linear-gradient(160deg, #0f0f1a 0%, #13131f 100%);
  border-bottom: 1px solid var(--border);
  padding: 20px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-illo svg {
  width: 100%;
  max-width: 200px;
  height: auto;
  display: block;
}

.step-content {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.step-num {
  width: 28px;
  height: 28px;
  background: rgba(124, 106, 247, 0.15);
  border: 1px solid rgba(124, 106, 247, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-light);
  flex-shrink: 0;
}

.step-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}

.step-content p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.problem-callout {
  background: rgba(239, 68, 68, 0.06);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius);
  padding: 20px 24px;
  text-align: center;
  font-size: 16px;
  color: var(--text);
  font-style: italic;
  line-height: 1.6;
}

@media (max-width: 640px) {
  .steps { grid-template-columns: 1fr; }
}

/* VIDEO */
.video-wrapper {
  margin-top: 40px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.video-wrapper video {
  width: 100%;
  display: block;
}

.video-placeholder {
  aspect-ratio: 16 / 9;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: linear-gradient(135deg, #13131a 0%, #1a1a2e 100%);
  color: var(--text-muted);
  font-size: 14px;
}

.play-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(124, 106, 247, 0.15);
  border: 1px solid rgba(124, 106, 247, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-light);
}

/* SOLUTION */
.solution {
  padding: 80px 0;
  border-top: 1px solid var(--border);
}

.queries {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 40px;
}

.query {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 18px 20px;
  font-size: 15px;
  color: var(--text-muted);
  font-style: italic;
  transition: all 0.15s;
}

.query:hover { background: var(--bg-card-hover); color: var(--text); }

/* SOURCES */
.sources {
  padding: 80px 0;
  border-top: 1px solid var(--border);
}

.source-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
  margin-top: 40px;
}

.source-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  transition: all 0.15s;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.source-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.source-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.source-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.sources-more {
  text-align: center;
  margin-top: 24px;
  font-size: 14px;
  color: var(--text-muted);
  font-style: italic;
}

.highlight-col { color: var(--green) !important; font-weight: 600; }

/* CTA */
.cta {
  padding: 100px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.cta p {
  color: var(--text-muted);
  font-size: 17px;
  margin-bottom: 36px;
}

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  text-align: center;
}

footer .logo { display: block; margin-bottom: 8px; }
footer p { font-size: 13px; color: var(--text-muted); }

/* RESPONSIVE */
@media (max-width: 600px) {
  .form-placeholder { flex-direction: column; }
  .btn-primary { width: 100%; }
}