/* RESET & BASE */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #04060f;
  --bg-2: #080d1a;
  --cyan: #00d4ff;
  --cyan-dim: #007a99;
  --white: #f0f4f8;
  --gray: #8899aa;
  --gray-dim: #4a5568;
  --green: #00e5a0;
  --font-display: 'Plus Jakarta Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--font-display);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* NAV */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  position: sticky;
  top: 0;
  background: rgba(4,6,15,0.85);
  backdrop-filter: blur(12px);
  z-index: 10;
}

.nav-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--white);
}

.nav-tagline {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gray);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* HERO */
.hero {
  padding: 6rem 3rem 5rem;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-label::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 1px;
  background: var(--cyan);
}

.hero-headline {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--white);
  margin-bottom: 1.5rem;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--gray);
  line-height: 1.7;
  max-width: 440px;
  font-family: var(--font-display);
  font-weight: 400;
}

/* HERO CARD */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.v-card {
  background: var(--bg-2);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: 12px;
  padding: 1.75rem;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 0 60px rgba(0, 212, 255, 0.06), 0 20px 60px rgba(0,0,0,0.4);
  position: relative;
  overflow: hidden;
}

.v-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.4;
}

.v-card-top {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.v-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.v-card-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--cyan);
  text-transform: uppercase;
}

.v-field {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.v-key {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--gray);
}

.v-val {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--white);
}

.v-seal {
  margin-top: 1.25rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: var(--green);
  background: rgba(0, 229, 160, 0.08);
  border: 1px solid rgba(0, 229, 160, 0.2);
  border-radius: 4px;
  padding: 0.4rem 0;
}

/* PROBLEM */
.problem {
  padding: 6rem 3rem;
  background: var(--bg-2);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.problem-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.problem-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--gray-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.problem-headline {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  max-width: 600px;
}

.problem-body {
  font-size: 1.05rem;
  color: var(--gray);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: 4rem;
}

.problem-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding-top: 3rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.p-stat-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--cyan);
  letter-spacing: -0.04em;
  margin-bottom: 0.5rem;
  font-family: var(--font-display);
}

.p-stat-desc {
  font-size: 0.875rem;
  color: var(--gray);
  line-height: 1.5;
}

/* SOLUTION */
.solution {
  padding: 6rem 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.solution-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.solution-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--gray-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.solution-headline {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.solution-body {
  font-size: 1.05rem;
  color: var(--gray);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 4rem;
}

.solution-flow {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.s-step {
  flex: 1;
  min-width: 200px;
  background: var(--bg-2);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 10px;
  padding: 1.5rem;
}

.s-step-icon {
  color: var(--cyan);
  margin-bottom: 1rem;
}

.s-step-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.5rem;
}

.s-step-desc {
  font-size: 0.8rem;
  color: var(--gray);
  line-height: 1.5;
}

.s-arrow {
  color: var(--gray-dim);
  flex-shrink: 0;
}

/* PROOF LAYERS */
.prooflayers {
  padding: 6rem 3rem;
  background: var(--bg-2);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.prooflayers-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.prooflayers-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--gray-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 2.5rem;
}

.prooflayers-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5px;
  background: rgba(255,255,255,0.04);
  border-radius: 12px;
  overflow: hidden;
}

.pl-card {
  background: var(--bg);
  padding: 2.5rem;
}

.pl-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan);
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
}

.pl-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.pl-desc {
  font-size: 0.9rem;
  color: var(--gray);
  line-height: 1.6;
}

/* CLOSING */
.closing {
  padding: 8rem 3rem;
  text-align: center;
  background: var(--bg);
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
}

.closing-headline {
  font-size: clamp(2.2rem, 4.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.closing-body {
  font-size: 1.05rem;
  color: var(--gray);
  line-height: 1.7;
  margin-bottom: 3rem;
}

.closing-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  color: var(--cyan);
  text-transform: uppercase;
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 4px;
  padding: 0.4rem 1rem;
  background: rgba(0, 212, 255, 0.05);
}

/* FOOTER */
.footer {
  padding: 3rem;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-brand {
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.footer-meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--gray-dim);
  letter-spacing: 0.08em;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--gray-dim);
  margin-left: auto;
}

/* REGULATORY */
.regulatory { padding: 6rem 3rem; border-bottom: 1px solid rgba(255,255,255,0.05); }
.regulatory-inner { max-width: 1200px; margin: 0 auto; }
.regulatory-label { font-family: var(--font-mono); font-size: 0.7rem; color: var(--gray-dim); letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 1.5rem; }
.regulatory-headline { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; line-height: 1.1; letter-spacing: -0.03em; margin-bottom: 1.5rem; }
.regulatory-body { font-size: 1.05rem; color: var(--gray); line-height: 1.7; max-width: 560px; margin-bottom: 3.5rem; }
.regulatory-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.rc-card { display: flex; gap: 1rem; align-items: flex-start; background: var(--bg-2); border: 1px solid rgba(255,255,255,0.07); border-radius: 10px; padding: 1.5rem; }
.rc-icon { color: var(--cyan); flex-shrink: 0; margin-top: 0.1rem; }
.rc-title { font-size: 0.95rem; font-weight: 700; color: var(--white); margin-bottom: 0.5rem; }
.rc-desc { font-size: 0.85rem; color: var(--gray); line-height: 1.5; }

/* AUDIENCE */
.audience { padding: 6rem 3rem; background: var(--bg-2); border-bottom: 1px solid rgba(255,255,255,0.05); }
.audience-inner { max-width: 1200px; margin: 0 auto; }
.audience-label { font-family: var(--font-mono); font-size: 0.7rem; color: var(--gray-dim); letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 1.5rem; }
.audience-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.aud-card { background: var(--bg); border: 1px solid rgba(255,255,255,0.07); border-radius: 10px; padding: 2rem; }
.aud-icon { color: var(--cyan); margin-bottom: 1.25rem; }
.aud-title { font-size: 1.05rem; font-weight: 700; color: var(--white); margin-bottom: 0.75rem; letter-spacing: -0.02em; }
.aud-desc { font-size: 0.9rem; color: var(--gray); line-height: 1.6; }

/* API DEMO */
.api-demo { padding: 6rem 3rem; border-bottom: 1px solid rgba(255,255,255,0.05); }
.api-demo-inner { max-width: 1200px; margin: 0 auto; }
.api-demo-label { font-family: var(--font-mono); font-size: 0.7rem; color: var(--gray-dim); letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 1.5rem; }
.api-demo-headline { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; line-height: 1.1; letter-spacing: -0.03em; margin-bottom: 3rem; }
.api-demo-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.api-demo-code { display: flex; flex-direction: column; gap: 0.75rem; }
.code-tab { display: flex; align-items: center; gap: 0.5rem; font-family: var(--font-mono); font-size: 0.72rem; color: var(--gray); background: var(--bg-2); border: 1px solid rgba(255,255,255,0.1); border-bottom: none; border-radius: 6px 6px 0 0; padding: 0.6rem 1rem; border-radius: 6px 6px 0 0; }
.code-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 5px var(--green); }
.code-block { background: var(--bg-2); border: 1px solid rgba(255,255,255,0.1); border-radius: 0 0 8px 8px; padding: 1.5rem; font-family: var(--font-mono); font-size: 0.78rem; line-height: 1.7; overflow-x: auto; white-space: pre; }
.code-comment { color: var(--gray-dim); }
.code-keyword { color: var(--cyan); }
.code-str { color: var(--green); }
.code-prop { color: var(--white); }
.code-num { color: #ffd166; }
.code-link { font-family: var(--font-mono); font-size: 0.8rem; }
.code-link a { color: var(--cyan); text-decoration: none; }
.code-link a:hover { text-decoration: underline; }
.api-demo-visual { display: flex; flex-direction: column; gap: 1.25rem; }
.demo-card { background: var(--bg-2); border: 1px solid rgba(0, 212, 255, 0.15); border-radius: 12px; padding: 1.75rem; box-shadow: 0 0 40px rgba(0, 212, 255, 0.04); position: relative; overflow: hidden; }
.demo-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--cyan), transparent); opacity: 0.3; }
.demo-card-top { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 1.5rem; }
.demo-status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green); animation: pulse 2s ease-in-out infinite; }
.demo-card-label { font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.12em; color: var(--cyan); text-transform: uppercase; }
.demo-field { display: flex; justify-content: space-between; padding: 0.5rem 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
.demo-key { font-family: var(--font-mono); font-size: 0.72rem; color: var(--gray); }
.demo-val { font-family: var(--font-mono); font-size: 0.72rem; color: var(--white); }
.demo-seal { margin-top: 1.25rem; text-align: center; font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.18em; color: var(--green); background: rgba(0, 229, 160, 0.08); border: 1px solid rgba(0, 229, 160, 0.2); border-radius: 4px; padding: 0.4rem 0; }
.demo-note { font-size: 0.85rem; color: var(--gray); line-height: 1.6; }

/* CTA SECTION */
.cta-section { padding: 8rem 3rem; text-align: center; background: var(--bg-2); }
.cta-inner { max-width: 700px; margin: 0 auto; }
.cta-headline { font-size: clamp(2.2rem, 4.5vw, 3.5rem); font-weight: 800; line-height: 1.1; letter-spacing: -0.03em; margin-bottom: 1.5rem; }
.cta-body { font-size: 1.05rem; color: var(--gray); line-height: 1.7; margin-bottom: 3rem; }
.cta-buttons { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; margin-bottom: 2.5rem; }
.btn { display: inline-block; font-family: var(--font-display); font-weight: 700; font-size: 0.95rem; padding: 0.85rem 2rem; border-radius: 8px; text-decoration: none; transition: opacity 0.2s; cursor: pointer; }
.btn-primary { background: var(--cyan); color: var(--bg); }
.btn-primary:hover { opacity: 0.85; }
.btn-secondary { background: transparent; color: var(--white); border: 1px solid rgba(255,255,255,0.2); }
.btn-secondary:hover { border-color: rgba(255,255,255,0.4); }
.cta-meta { display: flex; justify-content: center; gap: 2rem; flex-wrap: wrap; }
.cta-meta-item { display: flex; align-items: center; gap: 0.5rem; font-family: var(--font-mono); font-size: 0.72rem; color: var(--gray-dim); letter-spacing: 0.05em; }

/* DEMO PAGE */
.demo-page { min-height: 100vh; display: flex; flex-direction: column; }
.demo-header { padding: 2rem 3rem; border-bottom: 1px solid rgba(255,255,255,0.06); display: flex; align-items: center; justify-content: space-between; }
.demo-header-brand { font-family: var(--font-display); font-weight: 800; font-size: 1.2rem; letter-spacing: -0.02em; color: var(--white); }
.demo-header-back { font-family: var(--font-mono); font-size: 0.75rem; color: var(--gray); display: flex; align-items: center; gap: 0.4rem; }
.demo-header-back a { color: var(--cyan); text-decoration: none; }
.demo-header-back a:hover { text-decoration: underline; }
.demo-main { flex: 1; padding: 4rem 3rem 6rem; }
.demo-main-inner { max-width: 900px; margin: 0 auto; }
.demo-step-label { font-family: var(--font-mono); font-size: 0.7rem; color: var(--cyan); letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 1rem; display: flex; align-items: center; gap: 0.5rem; }
.demo-step-label::before { content: ''; display: inline-block; width: 20px; height: 1px; background: var(--cyan); }
.demo-page-title { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; letter-spacing: -0.03em; margin-bottom: 0.75rem; }
.demo-page-sub { font-size: 1rem; color: var(--gray); line-height: 1.6; margin-bottom: 3.5rem; max-width: 580px; }
.demo-walkthrough { display: flex; flex-direction: column; gap: 1px; background: rgba(255,255,255,0.04); border-radius: 14px; overflow: hidden; border: 1px solid rgba(255,255,255,0.06); }
.demo-walkthrough-step { display: grid; grid-template-columns: 60px 1fr 280px; align-items: start; background: var(--bg); }
.demo-step-num { background: var(--bg-2); display: flex; flex-direction: column; align-items: center; padding: 1.5rem 0; border-right: 1px solid rgba(255,255,255,0.04); }
.demo-step-circle { width: 32px; height: 32px; border-radius: 50%; background: rgba(0,212,255,0.12); border: 1px solid rgba(0,212,255,0.3); display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 0.75rem; font-weight: 600; color: var(--cyan); flex-shrink: 0; }
.demo-step-circle.active { background: var(--cyan); color: var(--bg); border-color: var(--cyan); box-shadow: 0 0 12px rgba(0,212,255,0.4); }
.demo-step-circle.done { background: rgba(0,229,160,0.15); color: var(--green); border-color: rgba(0,229,160,0.4); }
.demo-step-body { padding: 1.75rem 2rem; border-right: 1px solid rgba(255,255,255,0.04); }
.demo-step-title { font-size: 1rem; font-weight: 700; color: var(--white); margin-bottom: 0.5rem; letter-spacing: -0.01em; }
.demo-step-desc { font-size: 0.85rem; color: var(--gray); line-height: 1.5; margin-bottom: 1.25rem; }
.demo-form { display: flex; flex-direction: column; gap: 0.75rem; }
.demo-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.demo-input { width: 100%; background: var(--bg-2); border: 1px solid rgba(255,255,255,0.1); border-radius: 6px; padding: 0.6rem 0.85rem; color: var(--white); font-family: var(--font-mono); font-size: 0.8rem; outline: none; transition: border-color 0.2s; }
.demo-input:focus { border-color: var(--cyan); }
.demo-input::placeholder { color: var(--gray-dim); }
.demo-label { display: block; font-size: 0.72rem; color: var(--gray); font-family: var(--font-mono); letter-spacing: 0.04em; margin-bottom: 0.25rem; }
.demo-btn { background: var(--cyan); color: var(--bg); font-family: var(--font-display); font-weight: 700; font-size: 0.88rem; border: none; border-radius: 6px; padding: 0.7rem 1.25rem; cursor: pointer; transition: opacity 0.2s; align-self: flex-start; }
.demo-btn:hover { opacity: 0.85; }
.demo-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.demo-output { padding: 2rem; background: var(--bg-2); }
.demo-output-label { font-family: var(--font-mono); font-size: 0.7rem; color: var(--gray); letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 1rem; }
.demo-jwt-box { background: var(--bg); border: 1px solid rgba(0,212,255,0.2); border-radius: 6px; padding: 1rem 1.25rem; font-family: var(--font-mono); font-size: 0.75rem; line-height: 1.6; word-break: break-all; color: var(--white); }
.demo-verify-section { display: flex; align-items: center; gap: 0.75rem; margin-top: 1rem; }
.demo-verify-btn { background: rgba(0,229,160,0.12); color: var(--green); border: 1px solid rgba(0,229,160,0.25); font-family: var(--font-mono); font-size: 0.78rem; font-weight: 600; border-radius: 5px; padding: 0.55rem 1rem; cursor: pointer; transition: opacity 0.2s; }
.demo-verify-btn:hover { opacity: 0.8; }
.demo-verify-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.demo-verify-output { flex: 1; font-family: var(--font-mono); font-size: 0.78rem; }
.demo-valid-badge { display: inline-block; background: rgba(0,229,160,0.15); color: var(--green); padding: 0.3rem 0.75rem; border-radius: 4px; font-weight: 600; margin-right: 0.75rem; border: 1px solid rgba(0,229,160,0.3); }
.demo-claims { margin-top: 0.5rem; font-size: 0.75rem; color: var(--gray); }
.demo-step-output { padding: 1.75rem 2rem; background: var(--bg-2); display: flex; flex-direction: column; justify-content: center; }
.demo-verified-card { background: var(--bg); border: 1px solid rgba(0,229,160,0.2); border-radius: 10px; padding: 1.5rem; box-shadow: 0 0 30px rgba(0,229,160,0.06); }
.demo-vc-top { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 1.25rem; }
.demo-vc-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green); animation: pulse 2s ease-in-out infinite; }
.demo-vc-label { font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.12em; color: var(--green); text-transform: uppercase; }
.demo-vc-field { display: flex; justify-content: space-between; padding: 0.45rem 0; border-bottom: 1px solid rgba(255,255,255,0.05); font-family: var(--font-mono); font-size: 0.72rem; }
.demo-vc-key { color: var(--gray); }
.demo-vc-val { color: var(--white); }
.demo-vc-seal { margin-top: 1rem; text-align: center; font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.18em; color: var(--green); background: rgba(0,229,160,0.08); border: 1px solid rgba(0,229,160,0.2); border-radius: 4px; padding: 0.35rem 0; }
.demo-restart { margin-top: 2rem; text-align: center; }
.demo-restart-btn { font-family: var(--font-mono); font-size: 0.78rem; color: var(--cyan); background: none; border: 1px solid rgba(0,212,255,0.2); border-radius: 5px; padding: 0.5rem 1rem; cursor: pointer; transition: opacity 0.2s; }
.demo-restart-btn:hover { opacity: 0.8; }
.demo-error { color: var(--red); font-family: var(--font-mono); font-size: 0.78rem; margin-top: 0.5rem; }
@media (max-width: 768px) { .demo-walkthrough-step { grid-template-columns: 1fr; } .demo-step-body { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.04); } .demo-step-output { border-top: 1px solid rgba(255,255,255,0.04); } .demo-row { grid-template-columns: 1fr; } .demo-main { padding: 2rem 1.5rem 4rem; } .demo-header { padding: 1.5rem; } }

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-visual { order: -1; }
  .hero-sub { max-width: 100%; }
  .problem-stats { grid-template-columns: 1fr; gap: 2rem; }
  .prooflayers-grid { grid-template-columns: 1fr; }
  .solution-flow { flex-direction: column; align-items: stretch; }
  .s-arrow { transform: rotate(90deg); align-self: center; }
  .regulatory-cards { grid-template-columns: 1fr; }
  .audience-grid { grid-template-columns: 1fr; }
  .api-demo-layout { grid-template-columns: 1fr; gap: 2rem; }
  .nav { padding: 1rem 1.5rem; }
  .hero, .problem, .regulatory, .solution, .audience, .api-demo, .prooflayers, .cta-section, .footer { padding-left: 1.5rem; padding-right: 1.5rem; }
}

@media (max-width: 480px) {
  .hero-headline { font-size: 2rem; }
  .v-card { max-width: 100%; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-copy { margin-left: 0; }
}