/* ============================================
   SIDERAL — Mercury-Inspired Design System
   E-Learning Production Company
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Outfit:wght@300;400;500;600&display=swap');

/* --- Design Tokens --- */
:root {
  /* Mercury palette */
  --void: #08080F;
  --deep: #0E0E1A;
  --surface: #161625;
  --crater: #1E1E32;
  --regolith: #2A2A42;
  --mercury-gray: #7B7B95;
  --mercury-light: #A5A5BA;
  --dust: #D0CEC6;
  --bone: #EAE8E1;
  --solar-bronze: #C49A6C;
  --solar-gold: #DEB87A;
  --solar-flare: #F0D4A0;
  --heat-glow: rgba(196, 154, 108, 0.12);

  /* Typography */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Outfit', system-ui, sans-serif;

  /* Type scale — major third */
  --text-xs: 0.8rem;
  --text-sm: 0.9rem;
  --text-base: 1.05rem;
  --text-lg: 1.2rem;
  --text-xl: 1.5rem;
  --text-2xl: 1.875rem;
  --text-3xl: 2.35rem;
  --text-4xl: 3rem;
  --text-5xl: 3.75rem;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 9rem;

  /* Layout */
  --max-width: 1180px;
  --max-text: 680px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration: 0.5s;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.7;
  color: var(--dust);
  background: var(--void);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }

/* --- Utility --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}
.text-narrow { max-width: var(--max-text); }
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-sm) 0;
  transition: background var(--duration) var(--ease-out),
              box-shadow var(--duration) var(--ease-out);
}
.nav.scrolled {
  background: rgba(8, 8, 15, 0.92);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(196, 154, 108, 0.1);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}
.nav-logo {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--bone);
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.nav-logo .logo-symbol {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: conic-gradient(from 180deg, var(--solar-bronze), var(--regolith), var(--solar-bronze));
  position: relative;
}
.nav-logo .logo-symbol::after {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--void);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
}
.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--mercury-light);
  transition: color 0.3s;
  letter-spacing: 0.01em;
}
.nav-links a:hover { color: var(--solar-gold); }
.nav-cta {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--void) !important;
  background: var(--solar-bronze);
  padding: 0.6rem 1.4rem;
  border-radius: 6px;
  border: none;
  transition: background 0.3s, transform 0.2s;
}
.nav-cta:hover {
  background: var(--solar-gold);
  transform: translateY(-1px);
}

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 28px;
  height: 20px;
  position: relative;
  z-index: 101;
}
.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--bone);
  transition: 0.3s;
  position: absolute;
  left: 0;
}
.nav-toggle span:nth-child(1) { top: 0; }
.nav-toggle span:nth-child(2) { top: 9px; }
.nav-toggle span:nth-child(3) { top: 18px; }
.nav-toggle.active span:nth-child(1) { top: 9px; transform: rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { top: 9px; transform: rotate(-45deg); }

/* --- HERO --- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: var(--space-3xl) 0 var(--space-2xl);
  overflow: hidden;
}

/* Mercury orbital ring — the one bold visual element */
.hero-orbital {
  position: absolute;
  top: 50%;
  right: -18%;
  width: 700px;
  height: 700px;
  transform: translateY(-50%);
  pointer-events: none;
}
.hero-orbital .orbit-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(196, 154, 108, 0.08);
  animation: orbit-spin 90s linear infinite;
}
.hero-orbital .orbit-ring:nth-child(2) {
  inset: 60px;
  border-color: rgba(196, 154, 108, 0.05);
  animation-duration: 120s;
  animation-direction: reverse;
}
.hero-orbital .orbit-ring:nth-child(3) {
  inset: 140px;
  border-color: rgba(196, 154, 108, 0.03);
  animation-duration: 150s;
}
.hero-orbital .planet {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200px;
  height: 200px;
  margin: -100px 0 0 -100px;
  border-radius: 50%;
  background: radial-gradient(
    circle at 35% 35%,
    var(--regolith) 0%,
    var(--surface) 50%,
    var(--deep) 100%
  );
  box-shadow:
    inset -30px -20px 60px rgba(0,0,0,0.8),
    0 0 80px rgba(196, 154, 108, 0.06),
    30px -10px 40px rgba(196, 154, 108, 0.03);
}
.hero-orbital .planet::before {
  content: '';
  position: absolute;
  top: 15%;
  left: 20%;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(196,154,108,0.05) 0%, transparent 70%);
  box-shadow:
    35px 25px 0 6px rgba(196,154,108,0.03),
    60px 55px 0 4px rgba(196,154,108,0.04),
    20px 70px 0 8px rgba(196,154,108,0.02),
    80px 20px 0 3px rgba(196,154,108,0.03);
}
@keyframes orbit-spin { to { transform: rotate(360deg); } }

/* Sun glow — top right */
.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(196, 154, 108, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}
.hero-eyebrow {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--solar-bronze);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.hero-eyebrow::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--solar-bronze);
}
.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: 700;
  line-height: 1.08;
  color: var(--bone);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}
.hero-sub {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--mercury-light);
  max-width: 580px;
  margin-bottom: var(--space-lg);
}
.hero-ctas {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.btn-primary {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--void);
  background: var(--solar-bronze);
  padding: 0.9rem 2rem;
  border-radius: 6px;
  border: none;
  transition: background 0.3s, transform 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.btn-primary:hover {
  background: var(--solar-gold);
  transform: translateY(-2px);
}
.btn-secondary {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--mercury-light);
  background: transparent;
  padding: 0.9rem 1.6rem;
  border-radius: 6px;
  border: 1px solid var(--regolith);
  transition: border-color 0.3s, color 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.btn-secondary:hover {
  border-color: var(--solar-bronze);
  color: var(--solar-gold);
}

/* Logos strip */
.hero-logos {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(196, 154, 108, 0.08);
}
.hero-logos p {
  font-size: var(--text-xs);
  color: var(--mercury-gray);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-sm);
}
.logos-row {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  opacity: 0.35;
}
.logo-placeholder {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--mercury-light);
  letter-spacing: 0.04em;
}

/* --- SECTION COMMON --- */
section {
  padding: var(--space-3xl) 0;
  position: relative;
}
.section-label {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--solar-bronze);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.section-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--solar-bronze);
}
.section-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1.15;
  color: var(--bone);
  margin-bottom: var(--space-md);
  letter-spacing: -0.01em;
}
.section-intro {
  font-size: var(--text-lg);
  color: var(--mercury-light);
  max-width: var(--max-text);
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}

/* --- PROBLEMS --- */
.problems { background: var(--deep); }
.problems-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}
.problem-card {
  padding: var(--space-lg);
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid rgba(196, 154, 108, 0.06);
  transition: border-color 0.4s;
}
.problem-card:hover {
  border-color: rgba(196, 154, 108, 0.15);
}
.problem-card .problem-quote {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--bone);
  line-height: 1.45;
  margin-bottom: var(--space-sm);
}
.problem-card .problem-context {
  font-size: var(--text-sm);
  color: var(--mercury-gray);
  line-height: 1.65;
}

/* Full-width problem card */
.problem-card.full { grid-column: 1 / -1; }

/* --- VALUE PROP --- */
.value-prop { background: var(--void); }
.value-pillars {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}
.pillar {
  padding: var(--space-lg);
  border-radius: 10px;
  border: 1px solid rgba(196, 154, 108, 0.06);
  background: linear-gradient(
    165deg,
    rgba(196, 154, 108, 0.04) 0%,
    transparent 40%
  );
  transition: border-color 0.4s, background 0.4s;
}
.pillar:hover {
  border-color: rgba(196, 154, 108, 0.14);
  background: linear-gradient(
    165deg,
    rgba(196, 154, 108, 0.07) 0%,
    transparent 40%
  );
}
.pillar-number {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--solar-bronze);
  margin-bottom: var(--space-sm);
  opacity: 0.7;
}
.pillar h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--bone);
  line-height: 1.3;
  margin-bottom: var(--space-sm);
}
.pillar p {
  color: var(--mercury-light);
  font-size: var(--text-sm);
  line-height: 1.7;
}

/* --- SOLUTIONS --- */
.solutions { background: var(--deep); }
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}
.solution-card {
  padding: var(--space-lg);
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid rgba(196, 154, 108, 0.05);
  transition: border-color 0.4s, transform 0.4s var(--ease-out);
}
.solution-card:hover {
  border-color: rgba(196, 154, 108, 0.15);
  transform: translateY(-3px);
}
.solution-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--heat-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  color: var(--solar-bronze);
  font-size: 1.3rem;
}
.solution-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--bone);
  margin-bottom: var(--space-xs);
  line-height: 1.35;
}
.solution-card p {
  color: var(--mercury-light);
  font-size: var(--text-sm);
  line-height: 1.7;
}
.solution-card .solution-fit {
  margin-top: var(--space-sm);
  font-size: var(--text-xs);
  color: var(--solar-bronze);
  font-weight: 500;
}

/* --- CASE STUDY --- */
.case-study {
  background: var(--void);
  border-top: 1px solid rgba(196, 154, 108, 0.06);
  border-bottom: 1px solid rgba(196, 154, 108, 0.06);
}
.case-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}
.case-visual {
  aspect-ratio: 16 / 10;
  border-radius: 10px;
  background: linear-gradient(
    135deg,
    var(--crater) 0%,
    var(--surface) 50%,
    var(--regolith) 100%
  );
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(196, 154, 108, 0.08);
}
.case-visual::before {
  content: 'Showreel';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--mercury-light);
  letter-spacing: 0.04em;
  padding: 0.8rem 1.6rem;
  border: 1px solid rgba(196, 154, 108, 0.2);
  border-radius: 6px;
}
.case-visual .play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(196, 154, 108, 0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(196, 154, 108, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.3s;
}
.case-visual .play-btn:hover {
  background: rgba(196, 154, 108, 0.3);
}
.case-visual .play-btn svg {
  width: 20px;
  height: 20px;
  fill: var(--solar-gold);
  margin-left: 3px;
}
.case-content h3 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--bone);
  line-height: 1.25;
  margin-bottom: var(--space-sm);
}
.case-content .case-desc {
  color: var(--mercury-light);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}
.case-metrics {
  display: flex;
  gap: var(--space-lg);
  margin-bottom: var(--space-md);
}
.metric .metric-value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--solar-bronze);
  line-height: 1;
}
.metric .metric-label {
  font-size: var(--text-xs);
  color: var(--mercury-gray);
  margin-top: 0.3rem;
}

/* --- BENEFITS --- */
.benefits { background: var(--deep); }
.benefits-levels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}
.benefit-level {
  padding: var(--space-lg);
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid rgba(196, 154, 108, 0.05);
}
.benefit-level .level-tag {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--solar-bronze);
  margin-bottom: var(--space-sm);
}
.benefit-level h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--bone);
  margin-bottom: var(--space-md);
  line-height: 1.3;
}
.benefit-level ul {
  list-style: none;
}
.benefit-level li {
  font-size: var(--text-sm);
  color: var(--mercury-light);
  padding: 0.45rem 0;
  padding-left: 1.2rem;
  position: relative;
  line-height: 1.55;
}
.benefit-level li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.85rem;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--solar-bronze);
  opacity: 0.5;
}

/* --- PROCESS --- */
.process { background: var(--void); }
.process-timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  counter-reset: step;
}
.process-step {
  padding: var(--space-lg) var(--space-md);
  counter-increment: step;
  position: relative;
}
.process-step::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--crater);
  line-height: 1;
  margin-bottom: var(--space-sm);
  display: block;
}
.process-step h3 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--bone);
  margin-bottom: var(--space-xs);
  line-height: 1.35;
}
.process-step p {
  font-size: var(--text-sm);
  color: var(--mercury-gray);
  line-height: 1.65;
}
.process-note {
  margin-top: var(--space-xl);
  padding: var(--space-md) var(--space-lg);
  border-radius: 10px;
  border: 1px solid rgba(196, 154, 108, 0.1);
  background: var(--heat-glow);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.process-note .note-highlight {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--solar-bronze);
  white-space: nowrap;
}
.process-note .note-text {
  font-size: var(--text-sm);
  color: var(--mercury-light);
}

/* --- DIFFERENTIATORS --- */
.differentiators { background: var(--deep); }
.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}
.diff-card {
  padding: var(--space-lg);
  border-radius: 10px;
  border: 1px solid rgba(196, 154, 108, 0.06);
  background: var(--surface);
}
.diff-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--solar-gold);
  margin-bottom: var(--space-sm);
  line-height: 1.35;
}
.diff-card p {
  font-size: var(--text-sm);
  color: var(--mercury-light);
  line-height: 1.7;
}

/* --- PROOF --- */
.proof { background: var(--void); }
.proof-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}
.stat .stat-number {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--bone);
  line-height: 1;
}
.stat .stat-label {
  font-size: var(--text-sm);
  color: var(--mercury-gray);
  margin-top: 0.4rem;
}
.testimonial {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  padding: var(--space-lg);
}
.testimonial blockquote {
  font-size: var(--text-lg);
  color: var(--bone);
  line-height: 1.65;
  font-style: italic;
  font-weight: 300;
  margin-bottom: var(--space-md);
}
.testimonial cite {
  font-style: normal;
  font-size: var(--text-sm);
  color: var(--solar-bronze);
  font-weight: 500;
}

/* --- FAQ --- */
.faq { background: var(--deep); }
.faq-list {
  max-width: 740px;
}
.faq-item {
  border-bottom: 1px solid rgba(196, 154, 108, 0.06);
}
.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: var(--space-md) 0;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--bone);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  transition: color 0.3s;
}
.faq-question:hover { color: var(--solar-gold); }
.faq-question .faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--mercury-gray);
  transition: transform 0.3s var(--ease-out), color 0.3s;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--solar-bronze);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease-out), padding 0.4s;
}
.faq-item.active .faq-answer {
  max-height: 300px;
}
.faq-answer-inner {
  padding: 0 0 var(--space-md);
  font-size: var(--text-sm);
  color: var(--mercury-light);
  line-height: 1.75;
}

/* --- FINAL CTA --- */
.final-cta {
  background: var(--void);
  padding: var(--space-3xl) 0;
  text-align: center;
  position: relative;
}
.final-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center bottom, rgba(196, 154, 108, 0.06) 0%, transparent 60%);
  pointer-events: none;
}
.final-cta .container {
  position: relative;
  z-index: 2;
}
.final-cta h2 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--bone);
  margin-bottom: var(--space-sm);
  line-height: 1.2;
}
.final-cta .final-sub {
  font-size: var(--text-lg);
  color: var(--mercury-light);
  margin-bottom: var(--space-lg);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.final-cta .form-row {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  max-width: 500px;
  margin: 0 auto var(--space-sm);
  flex-wrap: wrap;
}
.final-cta input[type="email"] {
  flex: 1;
  min-width: 220px;
  padding: 0.9rem 1.2rem;
  border-radius: 6px;
  border: 1px solid var(--regolith);
  background: var(--surface);
  color: var(--bone);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  outline: none;
  transition: border-color 0.3s;
}
.final-cta input[type="email"]::placeholder { color: var(--mercury-gray); }
.final-cta input[type="email"]:focus { border-color: var(--solar-bronze); }
.final-cta .form-note {
  font-size: var(--text-xs);
  color: var(--mercury-gray);
  margin-top: var(--space-xs);
}

/* --- FOOTER --- */
.footer {
  background: var(--deep);
  padding: var(--space-xl) 0 var(--space-lg);
  border-top: 1px solid rgba(196, 154, 108, 0.06);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-lg);
  flex-wrap: wrap;
}
.footer-brand {
  max-width: 280px;
}
.footer-brand .nav-logo { margin-bottom: var(--space-sm); }
.footer-brand p {
  font-size: var(--text-sm);
  color: var(--mercury-gray);
  line-height: 1.6;
}
.footer-col h4 {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--bone);
  margin-bottom: var(--space-sm);
}
.footer-col a {
  display: block;
  font-size: var(--text-sm);
  color: var(--mercury-gray);
  padding: 0.25rem 0;
  transition: color 0.3s;
}
.footer-col a:hover { color: var(--solar-gold); }
.footer-bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(196, 154, 108, 0.05);
  font-size: var(--text-xs);
  color: var(--mercury-gray);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* --- REVEAL ANIMATION --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- RESPONSIVE --- */
@media (max-width: 960px) {
  :root {
    --text-5xl: 2.75rem;
    --text-4xl: 2.25rem;
    --text-3xl: 1.85rem;
  }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    background: rgba(8, 8, 15, 0.97);
    backdrop-filter: blur(20px);
    justify-content: center;
    align-items: center;
    gap: var(--space-lg);
    z-index: 100;
  }
  .nav-links.open a { font-size: var(--text-xl); }
  .hero-orbital { display: none; }
  .problems-grid,
  .value-pillars,
  .solutions-grid,
  .diff-grid { grid-template-columns: 1fr; }
  .case-inner { grid-template-columns: 1fr; }
  .benefits-levels { grid-template-columns: 1fr; }
  .process-timeline { grid-template-columns: 1fr; }
  .problem-card.full { grid-column: auto; }
}

@media (max-width: 600px) {
  :root {
    --text-5xl: 2.1rem;
    --text-4xl: 1.75rem;
    --text-3xl: 1.5rem;
  }
  .hero { padding-top: 7rem; }
  .hero-ctas { flex-direction: column; align-items: flex-start; }
  .proof-stats { gap: var(--space-lg); }
  .case-metrics { flex-direction: column; gap: var(--space-sm); }
  .process-note { flex-direction: column; text-align: center; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .hero-orbital .orbit-ring { animation: none; }
  .reveal { transition: none; opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}