/* ==========================================================================
   AETHERIS SIGNAL v2 — Design System
   Minimal, premium, dark. Single accent, precision typography.
   ========================================================================== */

/* ─── Custom Properties ─── */
:root {
  color-scheme: dark;

  --ink: #16161A;
  --surface: #222226;
  --surface-hover: #2C2C30;
  --surface-elevated: #28282C;
  --border: rgba(255, 255, 255, 0.07);
  --border-accent: rgba(93, 235, 255, 0.3);
  --text: #F5F3EF;
  --text-secondary: #A9A49C;
  --text-tertiary: #7D7870;
  --accent: #5DEBFF;
  --accent-hover: #7BF0FF;
  --accent-dim: rgba(93, 235, 255, 0.12);
  --accent-glow: rgba(93, 235, 255, 0.08);
  --gold: #E8C36A;
  --gold-dim: rgba(232, 195, 106, 0.15);

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --container: 1200px;
  --section-y: clamp(80px, 12vw, 160px);

  --ease-out: cubic-bezier(0.19, 1, 0.22, 1);
  --ease: cubic-bezier(0.65, 0, 0.35, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--text);
  background: var(--ink);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  background: none;
  border: none;
}

input, textarea, select {
  font: inherit;
  color: inherit;
}

ul { list-style: none; }

::selection {
  background: var(--accent-dim);
  color: var(--text);
}

/* ─── Typography ─── */
h1, h2, h3, h4 {
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: var(--text);
}

h1 {
  font-size: clamp(2.8rem, 8vw, 5rem);
  letter-spacing: -0.05em;
  line-height: 0.98;
}

h2 {
  font-size: clamp(2rem, 5.5vw, 3.5rem);
  letter-spacing: -0.045em;
  line-height: 1.02;
}

h3 {
  font-size: clamp(1.25rem, 2.2vw, 1.5rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

h4 {
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}

p { color: var(--text-secondary); line-height: 1.65; }

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

.mono {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--text-tertiary);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ─── Layout ─── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

section {
  padding: var(--section-y) 0;
  position: relative;
}

.section-header {
  margin-bottom: 4rem;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  max-width: 520px;
  font-size: 1.0625rem;
}

.text-center { text-align: center; }
.text-center .section-header p { margin: 0 auto; }

/* ─── Grids ─── */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
}

.grid-3 > *, .grid-2 > *, .grid-4 > * {
  background: var(--ink);
}

/* ─── Navigation ─── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 64px;
  background: rgba(22, 22, 26, 0.85);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  font-size: 1.05rem;
  letter-spacing: -0.03em;
  color: var(--text);
}

.nav-logo img {
  width: 32px;
  height: auto;
}

.nav-logo .accent-text {
  font-weight: 500;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  padding: 0 14px;
  height: 36px;
  font-size: 0.875rem;
  font-weight: 450;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 0 18px;
  height: 36px;
  background: var(--accent);
  color: var(--ink) !important;
  font-size: 0.8rem;
  font-weight: 550;
  letter-spacing: -0.01em;
  border-radius: var(--radius-full);
  margin-left: 8px;
}

/* =====================================================================
   PRECISION REVENUE SYSTEMS — NEW PREMIUM COMPONENTS (2026 Upgrade)
   ===================================================================== */

.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding-top: 2rem;
  padding-bottom: 5rem;
  border-bottom: 1px solid var(--border);
}

.stat-number {
  font-size: 2.75rem;
  font-weight: 500;
  letter-spacing: -0.04em;
  color: var(--accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.service-card {
  background: var(--ink);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all 0.3s var(--ease-out);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
}

.industry-pill {
  padding: 0.75rem 1rem;
  background: var(--ink);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.industry-pill:hover {
  border-color: var(--border-accent);
  background: var(--surface-hover);
}

.premium-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: var(--ink);
  padding: 16px 32px;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  transition: all 0.2s var(--ease-out);
}

.premium-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.premium-cta.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.premium-cta.secondary:hover {
  background: var(--surface-hover);
  border-color: var(--border-accent);
}

/* =====================================================================
   BALANCED REDESIGN — Premium treatment for existing homepage sections
   ===================================================================== */

.section-header {
  margin-bottom: 3rem;
}

.section-header h2 {
  margin-bottom: 0.75rem;
  font-size: clamp(2rem, 5vw, 3.25rem);
}

.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all 0.3s var(--ease-out);
}

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

.service-card h3 {
  margin: 0.5rem 0 0.75rem;
  font-size: 1.35rem;
}

.service-card .tag {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 1rem;
}

.stat-item {
  padding: 1.5rem 0;
}

.stat-item .stat-number {
  font-size: 2.5rem;
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1;
}

.stat-item .stat-label {
  margin-top: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.4;
}

.btn-text {
  display: inline-flex;
  align-items: center;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

.btn-text:hover {
  color: var(--accent-hover);
}

.mission p {
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  max-width: 820px;
  line-height: 1.5;
}

/* Case Studies / Work section */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.case-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  text-decoration: none;
  color: inherit;
  transition: all 0.3s var(--ease-out);
  display: flex;
  flex-direction: column;
}

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

.case-meta {
  display: flex;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
}

.case-result {
  font-size: 2rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.case-card h3 {
  margin-bottom: 0.75rem;
}

.case-features {
  margin-top: auto;
  padding-top: 1rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.case-features li {
  margin-bottom: 0.35rem;
}

/* Service Area */
.city-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-top: 2rem;
}

.city-grid li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  text-align: center;
  transition: all 0.2s ease;
}

.city-grid li:hover {
  border-color: var(--border-accent);
  background: var(--surface-hover);
}

/* Guarantee */
.guarantee-banner {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.guarantee-banner h3 {
  margin-bottom: 0.75rem;
}

/* Industries */
#industries .service-card {
  background: var(--ink);
}

/* Comparison */
.comparison {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.5rem;
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
}

.comp-side {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.comp-divider {
  font-size: 2rem;
  color: var(--accent);
  font-weight: 300;
}

/* =====================================================================
   FINAL POLISH PASS — Production-ready refinements
   ===================================================================== */

/* Global refinements */
.btn, .premium-cta {
  transition: all 0.2s var(--ease-out);
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Marquee polish */
.marquee {
  overflow: hidden;
  padding: 1rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.marquee-track {
  display: flex;
  gap: 3rem;
  animation: marquee 40s linear infinite;
  white-space: nowrap;
}

.marquee-item {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  opacity: 0.85;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Hero refinements */
#hero .hero-content {
  max-width: 820px;
}

#hero .subtitle {
  font-size: 1.15rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

/* Form polish */
#contactForm input,
#contactForm select,
#contactForm textarea {
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

#contactForm input:focus,
#contactForm select:focus,
#contactForm textarea:focus {
  box-shadow: 0 0 0 3px var(--accent-dim);
}

/* Mobile polish */
@media (max-width: 768px) {
  h1 {
    font-size: 2.6rem !important;
    line-height: 1.05 !important;
  }
  
  .city-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .comparison {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .comp-divider {
    display: none;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .marquee-track {
    animation-duration: 25s;
  }
}

/* Final premium touches */
.reveal {
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.service-card,
.case-card,
.about-card,
.trust-card {
  will-change: transform;
}

/* Trust strip & hero actions */
.trust-strip {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.75rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* About / Leadership */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
}

.about-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.about-role {
  color: var(--accent);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.about-skills {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.about-skills li {
  background: var(--ink);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* AI Search section */
.ai-search-points .service-card {
  background: var(--surface);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 2.5rem;
  align-items: start;
}

.contact-info h3 {
  margin-bottom: 0.5rem;
}

.contact-detail {
  margin: 1.25rem 0;
}

.contact-detail-label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin-bottom: 0.25rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 0.4rem;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--ink);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  color: var(--text);
  font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  outline: none;
}

.nav-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  color: var(--ink) !important;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ─── Hero ─── */
#hero {
  padding-top: calc(64px + clamp(80px, 12vw, 140px));
  padding-bottom: clamp(60px, 8vw, 100px);
  overflow: hidden;
  position: relative;
}

#hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle at 50% 50%, var(--accent-glow), transparent 65%);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 880px;
}

.hero-content h1 {
  margin-bottom: 1.5rem;
}

.hero-content .subtitle {
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 4rem;
}

.hero-stats {
  display: flex;
  gap: 0;
  border-top: 1px solid var(--border);
  padding-top: 2rem;
}

.hero-stat {
  flex: 1;
}

.hero-stat + .hero-stat {
  border-left: 1px solid var(--border);
  padding-left: 2rem;
}

.hero-stat:not(:first-child) {
  padding-left: 2rem;
}

.hero-stat-value {
  font-size: 1.75rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  margin-bottom: 4px;
}

.hero-stat-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 24px;
  height: 44px;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  border-radius: var(--radius-full);
  transition: all 0.2s var(--ease);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--ink);
}

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

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.03);
  transform: translateY(-1px);
}

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s var(--ease), gap 0.2s var(--ease);
  padding: 4px 0;
}

.btn-text::after {
  content: '→';
  transition: transform 0.2s var(--ease);
}

.btn-text:hover {
  color: var(--accent);
  gap: 10px;
}

.btn-text:hover::after {
  transform: translateX(3px);
}

.btn-large {
  height: 52px;
  padding: 0 32px;
  font-size: 0.9375rem;
}

/* ─── Service Cards ─── */
#services {
  border-top: 1px solid var(--border);
}

.service-card {
  padding: clamp(2rem, 4vw, 3rem);
  position: relative;
  transition: background 0.3s var(--ease);
}

.service-card:hover {
  background: var(--surface);
}

.service-card-number {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 1.5rem;
}

.service-card h3 {
  margin-bottom: 0.5rem;
}

.service-card .tag {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  margin-bottom: 1rem;
}

.service-card p {
  font-size: 0.9375rem;
  margin-bottom: 1.5rem;
  max-width: 380px;
}

/* ─── Stats Section ─── */
#stats {
  border-top: 1px solid var(--border);
  padding: clamp(60px, 8vw, 100px) 0;
}

.stat-item {
  padding: 2.5rem 2rem;
}

.stat-item:not(:last-child) {
  border-right: 1px solid var(--border);
}

.stat-number {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 0.75rem;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  line-height: 1.4;
}

/* ─── Process ─── */
#process {
  border-top: 1px solid var(--border);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
}

.process-step {
  padding: clamp(2rem, 4vw, 3rem);
  background: var(--ink);
  position: relative;
}

.step-number {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.process-step h3 {
  margin-bottom: 0.75rem;
}

.process-step p {
  font-size: 0.9375rem;
  max-width: 360px;
}

/* ─── Case Studies ─── */
#case-studies {
  border-top: 1px solid var(--border);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
}

.case-card {
  padding: clamp(2rem, 4vw, 3rem);
  background: var(--ink);
  transition: background 0.3s var(--ease);
}

.case-card:hover {
  background: var(--surface);
}

.case-meta {
  display: flex;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 1.5rem;
}

.case-meta span + span::before {
  content: '·';
  margin-right: 12px;
}

.case-result {
  font-size: 2rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.case-result.gold-text {
  color: var(--gold);
}

.case-card h3 {
  margin-bottom: 0.75rem;
}

.case-card p {
  font-size: 0.9375rem;
  margin-bottom: 1.5rem;
}

.case-features {
  margin-bottom: 1.5rem;
}

.case-features li {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
}

.case-features li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--text-tertiary);
}

.case-cta-placeholder {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 1rem;
  padding: clamp(2rem, 4vw, 3rem);
  background: var(--ink);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
  cursor: pointer;
}

.case-cta-placeholder:hover {
  border-color: var(--border-accent);
  background: var(--surface);
}

.case-cta-placeholder h3 {
  color: var(--text-secondary);
}

.case-cta-placeholder p {
  font-size: 0.875rem;
  max-width: 280px;
}

/* ─── About ─── */
#about {
  border-top: 1px solid var(--border);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
}

.about-card {
  padding: clamp(2rem, 4vw, 3rem);
  background: var(--ink);
}

.about-card h3 {
  margin-bottom: 0.5rem;
}

.about-role {
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 1.25rem;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.about-card p {
  font-size: 0.9375rem;
  margin-bottom: 1rem;
}

.about-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 1.5rem;
}

.about-skills li {
  padding: 4px 12px;
  font-size: 0.78rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
}

/* ─── Contact ─── */
#contact {
  border-top: 1px solid var(--border);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
}

.contact-info h3 {
  margin-bottom: 1rem;
}

.contact-info p {
  font-size: 0.9375rem;
  margin-bottom: 2rem;
  max-width: 400px;
}

.contact-detail {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 1.5rem;
}

.contact-detail-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.contact-detail a {
  font-size: 1rem;
  color: var(--text);
  transition: color 0.2s var(--ease);
}

.contact-detail a:hover {
  color: var(--accent);
}

/* Form */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9375rem;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface-hover);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-tertiary);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-status {
  margin-top: 1rem;
  font-size: 0.875rem;
  min-height: 1.5rem;
}

.form-status.success {
  color: var(--accent);
}

.form-status.error {
  color: var(--gold);
}

/* ─── Mission / Context Banner ─── */
.mission {
  padding: clamp(60px, 8vw, 120px) 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.mission p {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.35;
  max-width: 720px;
  margin: 0 auto;
  color: var(--text);
}

/* ─── Marquee / Ticker ─── */
.marquee {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  padding: 1.25rem 0;
  mask-image: linear-gradient(to right, transparent, black 4%, black 96%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 4%, black 96%, transparent);
}

.marquee-track {
  display: flex;
  gap: 3rem;
  width: max-content;
  animation: marquee 34s linear infinite;
}

.marquee-item {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  white-space: nowrap;
  letter-spacing: -0.01em;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .marquee-track {
    animation: none;
  }
}

/* ─── Guarantee Banner ─── */
.guarantee-banner {
  padding: clamp(2.5rem, 5vw, 4rem);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
  background: var(--surface);
}

.guarantee-banner h3 {
  margin-bottom: 0.75rem;
}

.guarantee-banner p {
  max-width: 560px;
  margin: 0 auto;
  font-size: 0.9375rem;
}

/* ─── VAA Section ─── */
.vaa-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
}

.vaa-step {
  padding: clamp(2rem, 4vw, 3rem);
  background: var(--ink);
}

.vaa-step .step-number {
  color: var(--text-tertiary);
}

.vaa-step h3 {
  margin-bottom: 0.75rem;
}

.vaa-step p {
  font-size: 0.9375rem;
}

/* ─── Footer ─── */
footer {
  border-top: 1px solid var(--border);
  padding: clamp(40px, 6vw, 64px) 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  transition: color 0.2s var(--ease);
}

.footer-links a:hover {
  color: var(--text-secondary);
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-tertiary);
  font-size: 0.875rem;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.footer-social a:hover {
  border-color: var(--text-secondary);
  color: var(--text);
}

/* ─── Updated Premium Footer (2026) ─── */
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-logo {
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}

.footer-tagline {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  letter-spacing: 0.02em;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-contact a {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  transition: color 0.2s var(--ease);
}

.footer-contact a:hover {
  color: var(--text-secondary);
}

.footer-legal {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  text-align: right;
}

.footer-legal-links {
  display: flex;
  gap: 1rem;
}

.footer-legal-links a {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.footer-legal-links a:hover {
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 2rem;
  }

  .footer-legal {
    align-items: flex-start;
    text-align: left;
  }
}

/* ─── Scroll Animations ─── */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ─── Service Area ─── */
#service-area {
  border-top: 1px solid var(--border);
}

.city-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--border);
  margin-top: 2rem;
}

.city-grid li {
  padding: 1.25rem 1rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  background: var(--ink);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.city-grid li:hover {
  background: var(--surface);
  color: var(--text);
}

/* ─── Roadmap ─── */
#roadmap {
  border-top: 1px solid var(--border);
}

.roadmap-list {
  display: grid;
  gap: 1.5rem;
}

.roadmap-list li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 16px;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.roadmap-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.roadmap-check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
  flex-shrink: 0;
}

.roadmap-check::after {
  content: '✓';
  font-size: 0.6rem;
  color: var(--accent);
  font-weight: 700;
}

.roadmap-list strong {
  display: block;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--text);
}

.roadmap-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ─── Scale Upsell ─── */
.scale-upsell {
  border-top: 1px solid var(--border);
}

.scale-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 1px;
  background: var(--border);
}

.scale-content {
  padding: clamp(2rem, 4vw, 3rem);
  background: var(--ink);
}

.scale-content h2 {
  margin-bottom: 0.75rem;
}

.scale-content .subtitle {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.scale-list {
  margin-bottom: 2rem;
}

.scale-list li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}

.scale-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
}

.scale-aside {
  padding: clamp(2rem, 4vw, 3rem);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2rem;
}

.scale-stat-value {
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  margin-bottom: 4px;
}

.scale-stat-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

/* ─── AI Search Section ─── */
#ai-search {
  border-top: 1px solid var(--border);
}

/* ─── Comparison ─── */
.comparison {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.comp-side {
  padding: clamp(2rem, 4vw, 3rem);
  text-align: center;
}

.comp-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 100%;
  background: var(--surface);
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  font-size: 1.5rem;
  color: var(--text-tertiary);
}

.comp-side h3 {
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.comp-side p {
  font-size: 0.875rem;
}



/* ─── Trust + Eye-Catch Upgrades ─── */
.trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: -2rem 0 3rem;
  max-width: 860px;
}

.trust-strip span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid rgba(93, 235, 255, 0.18);
  border-radius: var(--radius-full);
  background: rgba(93, 235, 255, 0.07);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.trust-strip span::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 16px rgba(93, 235, 255, 0.65);
}

.system-map-section,
#trust-signals,
#social-proof {
  border-top: 1px solid var(--border);
}

.system-map {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.72fr) minmax(0, 1fr);
  align-items: stretch;
  gap: 1px;
  background: linear-gradient(90deg, rgba(232,195,106,0.2), rgba(93,235,255,0.28));
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0,0,0,0.22);
}

.system-node {
  padding: clamp(1.75rem, 4vw, 3rem);
  background: rgba(22,22,26,0.94);
  min-height: 320px;
}

.node-label {
  display: inline-flex;
  margin-bottom: 1.5rem;
  padding: 6px 10px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.05);
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.system-node h3 {
  margin-bottom: 1.25rem;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
}

.system-node ul {
  display: grid;
  gap: 0.8rem;
}

.system-node li {
  color: var(--text-secondary);
  position: relative;
  padding-left: 22px;
}

.system-node li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--gold);
}

.win-node {
  background:
    radial-gradient(circle at 85% 15%, rgba(93,235,255,0.16), transparent 42%),
    rgba(22,22,26,0.96);
}

.win-node li::before { color: var(--accent); }

.system-flow {
  display: grid;
  place-content: center;
  gap: 12px;
  padding: 2rem;
  background:
    linear-gradient(180deg, rgba(93,235,255,0.08), rgba(232,195,106,0.07)),
    var(--surface);
  position: relative;
}

.system-flow::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 18%;
  bottom: 18%;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--accent), var(--gold), transparent);
  opacity: 0.55;
}

.system-flow span {
  position: relative;
  z-index: 1;
  display: inline-flex;
  justify-content: center;
  min-width: 132px;
  padding: 10px 14px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-full);
  background: rgba(22,22,26,0.88);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.trust-card {
  padding: clamp(1.75rem, 3vw, 2.5rem);
  background: var(--ink);
}

.trust-card:hover { background: var(--surface); }

.trust-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 1.25rem;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  color: var(--accent);
  font-weight: 700;
}

.trust-card h3 { margin-bottom: 0.75rem; }
.trust-card p { font-size: 0.94rem; }

.proof-panel {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 4vw, 4rem);
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid rgba(93,235,255,0.18);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 10% 20%, rgba(93,235,255,0.12), transparent 38%),
    radial-gradient(circle at 90% 80%, rgba(232,195,106,0.1), transparent 42%),
    var(--surface);
}

.proof-panel h2 { font-size: clamp(1.8rem, 4vw, 3rem); }

.proof-quotes {
  display: grid;
  gap: 1rem;
}

.proof-quotes blockquote {
  padding: 1.5rem;
  border-left: 3px solid var(--accent);
  background: rgba(22,22,26,0.62);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text);
  font-size: 1rem;
}

.proof-quotes cite {
  display: block;
  margin-top: 1rem;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-style: normal;
}

.case-card {
  border: 1px solid transparent;
}

.case-card:hover {
  border-color: rgba(93,235,255,0.16);
  transform: translateY(-2px);
}

.case-result {
  display: inline-flex;
  padding: 4px 10px;
  border: 1px solid rgba(232,195,106,0.24);
  border-radius: var(--radius-full);
  background: var(--gold-dim);
  font-size: 1.05rem;
  line-height: 1;
}

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .scale-grid {
    grid-template-columns: 1fr;
  }

  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .city-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .navbar {
    padding: 0 16px;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 80vw);
    height: 100vh;
    background: var(--surface);
    border-left: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 80px 24px 32px;
    gap: 4px;
    transform: translateX(100%);
    transition: transform 0.4s var(--ease-out);
  }

  .nav-links.active {
    transform: translateX(0);
  }

  .nav-links a {
    padding: 16px;
    height: auto;
    font-size: 1rem;
    border-radius: var(--radius-sm);
  }

  .nav-cta {
    margin-left: 0;
    justify-content: center;
    margin-top: 8px;
  }

  .menu-toggle {
    display: flex;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1.5rem;
  }

  .hero-stat {
    padding-left: 0 !important;
    border-left: none !important;
  }

  .hero-stat + .hero-stat {
    border-left: none;
    padding-left: 0;
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
  }

  .grid-3,
  .process-grid,
  .vaa-grid {
    grid-template-columns: 1fr;
  }

  .case-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .city-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .stats-grid-mobile {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  .stats-grid-mobile .stat-item:nth-child(2n) {
    border-right: none;
  }

  .comparison {
    grid-template-columns: 1fr;
  }

  .comp-divider {
    width: 100%;
    height: 40px;
    border-left: none;
    border-right: none;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }
}

@media (max-width: 480px) {
  .city-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }
}


@media (max-width: 900px) {
  .system-map,
  .proof-panel {
    grid-template-columns: 1fr;
  }

  .system-flow {
    grid-template-columns: repeat(2, minmax(120px, 1fr));
  }

  .system-flow::before {
    display: none;
  }

  .trust-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .trust-strip {
    margin-top: -1.5rem;
  }

  .trust-strip span,
  .system-flow span {
    width: 100%;
  }

  .system-flow {
    grid-template-columns: 1fr;
  }
}


/* =========================================================================
   Signal v2 compatibility for secondary pages
   ========================================================================= */
.logo span, .brand { color: var(--text); font-weight: 650; letter-spacing: -0.02em; }
.logo a { gap: .65rem; }
.navbar.glass { background: rgba(22,22,26,.86); border-bottom: 1px solid var(--border); backdrop-filter: blur(18px) saturate(140%); }
.mobile-menu-toggle { display:none; width:42px; height:42px; border:1px solid var(--border); border-radius:999px; align-items:center; justify-content:center; flex-direction:column; gap:5px; color:var(--text); }
.mobile-menu-toggle span { width:18px; height:2px; background:currentColor; border-radius:999px; display:block; }
.card, .feature-card, .pricing-card, .blog-card, .product-card, .faq-item, .legal-content { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text-secondary); box-shadow:none; }
.card h1,.card h2,.card h3,.feature-card h3,.pricing-card h3,.product-card h3,.blog-card h3,.legal-content h1,.legal-content h2 { color: var(--text); }
.card p,.feature-card p,.pricing-card p,.product-card p,.blog-card p,.legal-content p,.legal-content li { color: var(--text-secondary); }
.wrap { max-width:1120px; margin:0 auto; padding:28px 22px 64px; }
.nav { display:flex; justify-content:space-between; align-items:center; border-bottom:1px solid var(--border); padding-bottom:20px; gap:1rem; }
.navlinks { display:flex; align-items:center; gap:1rem; color:var(--text-secondary); font-size:.9rem; }
.navlinks a:hover { color:var(--accent); }
.pill,.badge,.tag { background: var(--accent-dim); border:1px solid var(--border-accent); color: var(--accent); border-radius:999px; }
input,textarea,select { background: var(--ink); color: var(--text); border:1px solid rgba(255,255,255,.1); }
@media (max-width: 860px) { .mobile-menu-toggle { display:flex; } .navbar .nav-links { position: fixed; top:64px; left:16px; right:16px; display:none; flex-direction:column; padding:1rem; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); } .navbar.nav-open .nav-links { display:flex; } }