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

:root {
  --bg: #060a0e;
  --bg-alt: #0a1018;
  --surface: #0d1520;
  --surface-hi: #111c2a;
  --border: rgba(0,255,65,0.06);
  --border-hi: rgba(0,255,65,0.12);
  --border-subtle: rgba(255,255,255,0.04);
  --text: #e0e6ed;
  --text-secondary: #a0aab5;
  --muted: #5a6a78;
  --dim: #3a4a58;
  --green: #00ff41;
  --green-dim: rgba(0,255,65,0.08);
  --green-glow: rgba(0,255,65,0.15);
  --cyan: #00e5ff;
  --cyan-dim: rgba(0,229,255,0.08);
  --red: #ff3344;
  --red-dim: rgba(255,51,68,0.10);
  --amber: #ffb700;
  --amber-dim: rgba(255,183,0,0.10);
  --violet: #8b5cf6;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.6);
  --shadow-xl: 0 20px 50px rgba(0,0,0,0.7);
  --shadow-green: 0 0 20px rgba(0,255,65,0.08);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 10000;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

.reveal { opacity: 0; transform: translateY(28px); }

/* ── HERO ──────────────────────────────────────────────── */

.hero {
  min-height: 100dvh;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(60px + env(safe-area-inset-top, 0px)) 2rem 4rem;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #060a0e 0%, #0a1420 50%, #060a0e 100%);
}

#heroCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.hero > *:not(#heroCanvas) {
  position: relative;
  z-index: 1;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 2rem;
  background: var(--green-dim);
  padding: 0.45rem 1rem 0.45rem 0.8rem;
  border-radius: 100px;
  border: 1px solid rgba(0,255,65,0.1);
}

.hero__badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px rgba(0,255,65,0.5);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.75); }
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 8vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin-bottom: 1.6rem;
  max-width: 780px;
  color: var(--text);
}

.hero__title em {
  font-style: normal;
  background: linear-gradient(135deg, #00ff41 0%, #00e5ff 50%, #00ff41 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 200%;
  animation: gradShift 5s ease-in-out infinite;
}

@keyframes gradShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero__tagline {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 540px;
  line-height: 1.65;
  margin-bottom: 2rem;
}

.hero__signup {
  width: 100%;
  max-width: 460px;
  margin-bottom: 1.5rem;
}

.hero__form {
  display: flex;
  gap: 0.4rem;
  background: var(--surface);
  border: 1px solid var(--border-hi);
  border-radius: 14px;
  padding: 0.35rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  box-shadow: var(--shadow-md), var(--shadow-green);
}

.hero__form:focus-within {
  border-color: rgba(0,255,65,0.3);
  box-shadow: var(--shadow-md), 0 0 0 4px rgba(0,255,65,0.06), 0 0 30px rgba(0,255,65,0.06);
}

.hero__input {
  flex: 1;
  min-height: 48px;
  padding: 0 1rem;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 0.9rem;
  font-family: var(--font);
  outline: none;
}

.hero__input::placeholder { color: var(--dim); }

.hero__submit {
  min-height: 48px;
  padding: 0 1.6rem;
  background: var(--green);
  color: #060a0e;
  font-size: 0.82rem;
  font-weight: 700;
  font-family: var(--font);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.2s var(--ease-spring), box-shadow 0.2s ease, background 0.2s ease;
  box-shadow: 0 2px 12px rgba(0,255,65,0.2);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.hero__submit:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(0,255,65,0.3);
  background: #33ff66;
}

.hero__submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.hero__msg { font-size: 0.8rem; margin-top: 0.5rem; font-family: var(--mono); }
.hero__msg--ok { color: var(--green); }
.hero__msg--err { color: var(--red); }

.hero__meta {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.hero__meta-item {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.hero__meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
}

.hero__meta-dot--green { background: var(--green); box-shadow: 0 0 4px rgba(0,255,65,0.4); }
.hero__meta-dot--cyan { background: var(--cyan); box-shadow: 0 0 4px rgba(0,229,255,0.4); }
.hero__meta-dot--amber { background: var(--amber); box-shadow: 0 0 4px rgba(255,183,0,0.4); }

.hero__actions {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  border-radius: 10px;
  text-decoration: none;
  cursor: pointer;
  border: none;
  font-family: var(--font);
  transition: transform 0.22s var(--ease-spring), box-shadow 0.22s ease, border-color 0.22s ease, background 0.22s ease, color 0.22s ease;
}

.btn--ghost {
  padding: 0.7rem 1.2rem;
  background: transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--border-hi);
}

.btn--ghost:hover { color: var(--green); border-color: rgba(0,255,65,0.3); }

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--dim);
  font-family: var(--mono);
  font-size: 0.48rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  animation: scrollDrift 3s ease-in-out infinite;
  cursor: pointer;
}

@keyframes scrollDrift {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.3; }
  50% { transform: translateX(-50%) translateY(8px); opacity: 0.6; }
}

/* ── SECTION BASE ──────────────────────────────────────── */

.s {
  max-width: 1080px;
  margin: 0 auto;
  padding: 5rem 2rem;
}

.s__tag {
  font-family: var(--mono);
  font-size: 0.56rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 1.2rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--green-dim);
  padding: 0.35rem 0.9rem;
  border-radius: 100px;
  border: 1px solid rgba(0,255,65,0.08);
}

.s__tag--cyan {
  color: var(--cyan);
  background: var(--cyan-dim);
  border-color: rgba(0,229,255,0.08);
}

.s__tag--red {
  color: var(--red);
  background: var(--red-dim);
  border-color: rgba(255,51,68,0.08);
}

.s__tag--amber {
  color: var(--amber);
  background: var(--amber-dim);
  border-color: rgba(255,183,0,0.08);
}

.s__h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1rem;
  color: var(--text);
}

.s__body {
  font-size: clamp(0.92rem, 1.3vw, 1.05rem);
  color: var(--muted);
  line-height: 1.7;
  max-width: 580px;
}

/* ── WAVE DIVIDER ──────────────────────────────────────── */

.wave-divider {
  width: 100%;
  line-height: 0;
  overflow: hidden;
}

.wave-divider svg {
  display: block;
  width: 100%;
  height: 50px;
}

/* ── WHAT YOU GET ──────────────────────────────────────── */

.concept {
  max-width: 1080px;
  margin: 0 auto;
  padding: 5rem 2rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 768px) {
  .concept { grid-template-columns: 1.3fr 0.7fr; gap: 4rem; align-items: start; }
}

.concept__terminal {
  background: var(--surface);
  border: 1px solid var(--border-hi);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-lg), var(--shadow-green);
}

.concept__terminal-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.7rem 1rem;
  background: rgba(255,255,255,0.02);
  border-bottom: 1px solid var(--border-subtle);
}

.concept__terminal-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.concept__terminal-dot--r { background: #ff5f57; }
.concept__terminal-dot--y { background: #febc2e; }
.concept__terminal-dot--g { background: #28c840; }

.concept__terminal-title {
  font-family: var(--mono);
  font-size: 0.58rem;
  color: var(--dim);
  margin-left: 6px;
  letter-spacing: 0.04em;
}

.concept__terminal-body {
  padding: 1rem 1.2rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.9;
  color: var(--muted);
}

.concept__terminal-body .t-green { color: var(--green); }
.concept__terminal-body .t-cyan { color: var(--cyan); }
.concept__terminal-body .t-red { color: var(--red); }
.concept__terminal-body .t-amber { color: var(--amber); }
.concept__terminal-body .t-dim { color: var(--dim); }
.concept__terminal-body .t-prompt { color: var(--green); user-select: none; }

/* ── HOW IT WORKS ──────────────────────────────────────── */

.steps-wrap {
  background: var(--bg-alt);
  padding: 5rem 0;
  position: relative;
}

.steps-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 2rem;
}

.steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  margin-top: 2.5rem;
}

.step {
  border-radius: 14px;
  border: 1px solid var(--border);
  padding: 1.8rem 1.4rem;
  background: var(--surface);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s ease, border-color 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.step:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0,255,65,0.15);
}

.step::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--green), var(--cyan));
  opacity: 0.6;
}

.step__num {
  font-family: var(--mono);
  font-size: 0.52rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--green);
  background: var(--green-dim);
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  display: inline-flex;
  align-self: flex-start;
  border: 1px solid rgba(0,255,65,0.08);
}

.step__name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.step__desc {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ── TOPICS GRID ──────────────────────────────────────── */

.topics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
}

.topic {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.4rem 1.2rem;
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s ease, border-color 0.3s ease;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.topic:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.topic::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  border-radius: 12px 12px 0 0;
}

.topic--threat::before { background: linear-gradient(90deg, #ff3344, #ff6644); }
.topic--vuln::before { background: linear-gradient(90deg, #ffb700, #ff8800); }
.topic--defense::before { background: linear-gradient(90deg, #00ff41, #00e5ff); }
.topic--policy::before { background: linear-gradient(90deg, #8b5cf6, #00e5ff); }

.topic:hover.topic--threat { border-color: rgba(255,51,68,0.2); }
.topic:hover.topic--vuln { border-color: rgba(255,183,0,0.2); }
.topic:hover.topic--defense { border-color: rgba(0,255,65,0.2); }
.topic:hover.topic--policy { border-color: rgba(139,92,246,0.2); }

.topic__icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.8rem;
}

.topic--threat .topic__icon { background: var(--red-dim); }
.topic--vuln .topic__icon { background: var(--amber-dim); }
.topic--defense .topic__icon { background: var(--green-dim); }
.topic--policy .topic__icon { background: rgba(139,92,246,0.1); }

.topic__name {
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.4rem;
}

.topic__items {
  list-style: none;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  line-height: 1.8;
}

.topic__items li::before {
  content: '›';
  margin-right: 0.4rem;
  color: var(--dim);
}

/* ── CTA SECTION ──────────────────────────────────────── */

.cta-section {
  text-align: center;
  padding: 6rem 2rem calc(4rem + env(safe-area-inset-bottom, 0px));
  position: relative;
  overflow: hidden;
}

.cta-section__glow {
  position: absolute;
  top: 50%; left: 50%;
  width: 600px; height: 600px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(0,255,65,0.04) 0%, rgba(0,229,255,0.02) 40%, transparent 65%);
  pointer-events: none;
}

.cta-section__card {
  max-width: 480px;
  margin: 2rem auto 0;
  background: var(--surface);
  border: 1px solid var(--border-hi);
  border-radius: 18px;
  padding: 2.2rem;
  box-shadow: var(--shadow-lg), var(--shadow-green);
  position: relative;
  overflow: hidden;
}

.cta-section__card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--green), var(--cyan), transparent);
  opacity: 0.6;
}

.cta__form { display: flex; gap: 0.4rem; }

.cta__input {
  flex: 1;
  min-height: 48px;
  padding: 0 1rem;
  background: var(--bg);
  border: 1px solid var(--border-hi);
  border-radius: 10px;
  color: var(--text);
  font-size: 0.9rem;
  font-family: var(--font);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.cta__input::placeholder { color: var(--dim); }
.cta__input:focus { border-color: rgba(0,255,65,0.35); box-shadow: 0 0 0 3px rgba(0,255,65,0.06); }

.cta__submit {
  min-height: 48px;
  padding: 0 1.5rem;
  background: var(--green);
  color: #060a0e;
  font-size: 0.82rem;
  font-weight: 700;
  font-family: var(--font);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  transition: transform 0.2s var(--ease-spring), box-shadow 0.2s ease, background 0.2s ease;
  box-shadow: 0 2px 12px rgba(0,255,65,0.2);
}

.cta__submit:hover { transform: translateY(-1px); box-shadow: 0 6px 24px rgba(0,255,65,0.3); background: #33ff66; }
.cta__submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.cta__msg { font-size: 0.8rem; margin-top: 0.6rem; font-family: var(--mono); }
.cta__msg--ok { color: var(--green); }
.cta__msg--err { color: var(--red); }

/* ── FOOTER ──────────────────────────────────────────── */

.footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 2rem calc(2.5rem + env(safe-area-inset-bottom, 0px));
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
  background: var(--surface);
}

.footer__brand {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
}

.footer__pulse {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px rgba(0,255,65,0.4);
  margin-right: 0.5rem;
  animation: pulse 2.5s ease-in-out infinite;
}

.footer__links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.footer__link {
  font-family: var(--mono);
  font-size: 0.56rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dim);
  text-decoration: none;
  min-height: 44px;
  display: flex;
  align-items: center;
  transition: color 0.2s ease;
}

.footer__link:hover { color: var(--green); }

.footer__tag {
  font-family: var(--mono);
  font-size: 0.5rem;
  letter-spacing: 0.08em;
  color: var(--dim);
}

/* ── SCANLINE EFFECT (hero overlay) ────────────────────── */

.hero__scanline {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,255,65,0.015) 2px,
    rgba(0,255,65,0.015) 4px
  );
  animation: scanDrift 8s linear infinite;
}

@keyframes scanDrift {
  0% { transform: translateY(0); }
  100% { transform: translateY(4px); }
}

/* ── RESPONSIVE ──────────────────────────────────────── */

@media (max-width: 900px) {
  .topics-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .topics-grid { grid-template-columns: 1fr; gap: 0.8rem; }
  .steps-row { grid-template-columns: 1fr; gap: 0.8rem; }
  .hero__form { flex-direction: column; padding: 0.5rem; }
  .hero__input { min-height: 48px; }
  .hero__submit { min-height: 48px; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
  .s { padding: 3.5rem 1.5rem; }
  .concept { padding: 3.5rem 1.5rem; }
  .steps-wrap { padding: 3.5rem 0; }
  .steps-inner { padding: 0 1.5rem; }
  .cta__form { flex-direction: column; }
  .cta-section { padding: 4rem 1.5rem calc(3rem + env(safe-area-inset-bottom, 0px)); }
  .wave-divider svg { height: 30px; }
  .hero__meta { gap: 0.8rem; }
}