:root {
  --bg: #0a0a0a;
  --bg-elevated: #141414;
  --bg-card: #1a1a1a;
  --fg: #e8e8e8;
  --fg-muted: #888;
  --accent: #ff6b35;
  --accent-glow: rgba(255, 107, 53, 0.15);
  --green: #2dd4a8;
  --red: #ff4d4d;
  --border: #2a2a2a;
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

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

/* HERO */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: 800px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--fg-muted);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -1.5px;
}

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

.lede {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--fg-muted);
  max-width: 620px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding: 32px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.stat { text-align: center; }

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border);
}

/* PROBLEM */
.problem {
  padding: 120px 24px;
  background: var(--bg);
}

.problem-inner {
  max-width: 960px;
  margin: 0 auto;
}

.problem-label, .how-label, .verticals-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}

.problem h2, .how h2, .verticals h2 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 48px;
  letter-spacing: -1px;
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.problem-card {
  padding: 36px;
  border-radius: 16px;
  border: 1px solid var(--border);
}

.problem-card.old {
  background: var(--bg-elevated);
}

.problem-card.new {
  background: linear-gradient(135deg, rgba(255,107,53,0.08), rgba(255,107,53,0.02));
  border-color: rgba(255,107,53,0.3);
}

.card-tag {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
  color: var(--fg-muted);
}

.problem-card.new .card-tag { color: var(--accent); }

.problem-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.problem-card.old li {
  color: var(--fg-muted);
  padding-left: 24px;
  position: relative;
}

.problem-card.old li::before {
  content: '\2715';
  position: absolute;
  left: 0;
  color: var(--red);
  font-size: 14px;
}

.problem-card.new li {
  color: var(--fg);
  padding-left: 24px;
  position: relative;
}

.problem-card.new li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--green);
  font-size: 14px;
  font-weight: 700;
}

/* HOW IT WORKS */
.how {
  padding: 120px 24px;
  background: var(--bg-elevated);
}

.how-inner {
  max-width: 960px;
  margin: 0 auto;
}

.models-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.model-card {
  padding: 36px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: border-color 0.2s;
}

.model-card:hover {
  border-color: rgba(255,107,53,0.4);
}

.model-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  color: var(--border);
  line-height: 1;
  margin-bottom: 20px;
}

.model-card h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.model-desc {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.model-detail {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* VERTICALS */
.verticals {
  padding: 120px 24px;
  background: var(--bg);
}

.verticals-inner {
  max-width: 960px;
  margin: 0 auto;
}

.verticals-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.vertical-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 32px 20px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-align: center;
  transition: border-color 0.2s;
}

.vertical-item:hover {
  border-color: rgba(255,107,53,0.3);
}

.v-icon {
  font-size: 2rem;
  margin-bottom: 12px;
  opacity: 0.7;
}

.v-name {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.v-range {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
}

/* CLOSING */
.closing {
  padding: 140px 24px;
  background: var(--bg-elevated);
  text-align: center;
}

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

.closing h2 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.closing-text {
  font-size: 1.15rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* FOOTER */
.site-footer {
  padding: 40px 24px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
}

.footer-email {
  font-size: 0.9rem;
  color: var(--fg-muted);
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero { min-height: 80vh; padding: 60px 20px; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .stat-divider { width: 48px; height: 1px; }
  .problem-grid { grid-template-columns: 1fr; }
  .models-grid { grid-template-columns: 1fr; }
  .verticals-grid { grid-template-columns: 1fr 1fr; }
  .problem, .how, .verticals { padding: 80px 20px; }
  .closing { padding: 100px 20px; }
  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
  .verticals-grid { grid-template-columns: 1fr; }
}
/* ============================================================
   NAV
   ============================================================ */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--fg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-size: 0.9rem;
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-link:hover { color: var(--fg); }

.nav-cta {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  padding: 8px 18px;
  border: 1px solid rgba(255,107,53,0.4);
  border-radius: 8px;
  transition: background 0.2s, border-color 0.2s;
}

.nav-cta:hover, .nav-cta.active {
  background: rgba(255,107,53,0.1);
  border-color: var(--accent);
}

/* ============================================================
   PRICING CALCULATOR PAGE
   ============================================================ */

/* Hero banner for calculator page */
.calc-hero {
  padding: 80px 24px 60px;
  background: var(--bg);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.calc-hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 65%);
  pointer-events: none;
}

.calc-hero-inner {
  max-width: 640px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* Calculator layout */
.calc-section {
  padding: 0 24px 100px;
  background: var(--bg);
}

.calc-container {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 48px;
}

/* Step headers */
.calc-step {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.step-header {
  display: flex;
  align-items: center;
  gap: 16px;
}

.step-num {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--border);
  line-height: 1;
  min-width: 60px;
}

.step-label {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 600;
}

/* Industry grid */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.ind-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  color: var(--fg);
  font-family: var(--font-body);
}

.ind-btn:hover {
  border-color: rgba(255,107,53,0.4);
  background: var(--bg-card);
}

.ind-btn.active {
  border-color: var(--accent);
  background: rgba(255,107,53,0.08);
}

.ind-icon { font-size: 1.6rem; }

.ind-name {
  font-size: 0.78rem;
  font-weight: 500;
  text-align: center;
  line-height: 1.3;
  color: var(--fg-muted);
}

.ind-btn.active .ind-name { color: var(--fg); }

/* Model grid */
.model-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.model-btn {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 16px;
  cursor: pointer;
  text-align: left;
  color: var(--fg);
  font-family: var(--font-body);
  transition: border-color 0.2s, background 0.2s;
}

.model-btn:hover {
  border-color: rgba(255,107,53,0.4);
  background: var(--bg-card);
}

.model-btn.active {
  border-color: var(--accent);
  background: rgba(255,107,53,0.08);
}

.model-btn-num {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--border);
  line-height: 1;
}

.model-btn.active .model-btn-num { color: var(--accent); }

.model-btn-name {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
}

.model-btn-desc {
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.5;
}

.model-btn-range {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

/* Volume control */
.volume-control {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 24px 28px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: fit-content;
}

.vol-btn {
  width: 44px;
  height: 44px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--fg);
  font-size: 1.4rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.vol-btn:hover {
  border-color: var(--accent);
  background: rgba(255,107,53,0.08);
}

.vol-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 100px;
}

.vol-number {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--fg);
  line-height: 1;
}

.vol-unit {
  font-size: 0.78rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 4px;
}

.vol-slider {
  width: 100%;
  margin-top: 12px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* Results panel */
.results-panel {
  padding: 40px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 20px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.results-header { display: flex; flex-direction: column; gap: 8px; }

.results-tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.results-title {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.result-card {
  padding: 24px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.result-card.primary {
  border-color: rgba(255,107,53,0.3);
  background: rgba(255,107,53,0.04);
}

.result-card.highlight {
  border-color: rgba(45,212,168,0.3);
  background: rgba(45,212,168,0.04);
}

.result-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--fg-muted);
}

.result-value {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--fg);
  line-height: 1;
}

.result-value.accent { color: var(--green); }

.result-sub {
  font-size: 0.78rem;
  color: var(--fg-muted);
}

/* ROI bar */
.roi-bar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.roi-bar-inner {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.roi-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--fg-muted);
}

.roi-number {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--green);
  line-height: 1;
}

.roi-desc {
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.roi-track {
  height: 8px;
  background: var(--bg-card);
  border-radius: 100px;
  overflow: hidden;
}

.roi-fill {
  height: 100%;
  background: var(--green);
  border-radius: 100px;
  transition: width 0.5s ease;
  width: 0%;
}

/* Results detail */
.results-detail {
  font-size: 0.85rem;
  color: var(--fg-muted);
  padding: 16px 20px;
  background: var(--bg-card);
  border-radius: 8px;
  border-left: 3px solid var(--accent);
}

/* CTA */
.results-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.results-cta-text {
  font-size: 1.1rem;
  color: var(--fg);
  font-weight: 500;
}

.btn-primary {
  display: inline-block;
  padding: 16px 36px;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 10px;
  transition: opacity 0.2s, transform 0.1s;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.results-disclaimer {
  font-size: 0.78rem;
  color: var(--fg-muted);
  max-width: 440px;
  line-height: 1.5;
}

/* Guarantees strip */
.guarantees {
  padding: 48px 24px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.guarantees-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
}

.g-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.g-icon {
  width: 28px;
  height: 28px;
  background: rgba(45,212,168,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--green);
  flex-shrink: 0;
}

.g-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.g-text strong { font-size: 0.95rem; font-weight: 600; }
.g-text span   { font-size: 0.82rem; color: var(--fg-muted); }

.g-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ============================================================
   RESPONSIVE — CALCULATOR
   ============================================================ */
@media (max-width: 900px) {
  .industry-grid { grid-template-columns: repeat(4, 1fr); }
  .results-grid  { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-link { display: none; }
  .industry-grid { grid-template-columns: repeat(3, 1fr); }
  .model-grid    { grid-template-columns: 1fr; }
  .results-grid  { grid-template-columns: 1fr 1fr; }
  .guarantees-inner { flex-direction: column; gap: 20px; }
  .g-divider { width: 48px; height: 1px; }
  .results-panel { padding: 24px; }
}

@media (max-width: 480px) {
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .results-grid  { grid-template-columns: 1fr; }
  .volume-control { width: 100%; justify-content: center; }
}