/* ============================================================
   INFOTECH TI — Premium Dark Tech CSS
   ============================================================ */

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

:root {
  --c-black:       #050505;
  --c-black-2:     #0A0A0A;
  --c-dark:        #0D0D0D;
  --c-dark-2:      #111111;
  --c-dark-3:      #161616;
  --c-card:        #0F0F0F;
  --c-border:      #1E1E1E;
  --c-border-2:    #2A2A2A;
  --c-muted:       #404040;
  --c-sub:         #808080;
  --c-meta:        #BFBFBF;
  --c-white:       #FFFFFF;
  --c-off-white:   #F0F0F0;

  --font-main: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  --ts-fast:   150ms ease;
  --ts-med:    300ms ease;
  --ts-slow:   600ms ease;
  --ts-xslow:  900ms cubic-bezier(0.16,1,0.3,1);

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-pill: 100px;

  --container: 1200px;
  --section-gap: 120px;

  scroll-behavior: smooth;
}

html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
  background-color: var(--c-black);
  color: var(--c-white);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

body.splash-active { overflow: hidden; }

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ── SCROLLBAR ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--c-black); }
::-webkit-scrollbar-thumb { background: var(--c-muted); border-radius: 10px; }

/* ── CONTAINER ─────────────────────────────────────────────── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

/* ── SECTION ───────────────────────────────────────────────── */
.section {
  padding: var(--section-gap) 0;
  position: relative;
}

.section-label {
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-sub);
  margin-bottom: 16px;
  display: block;
}

.section-title {
  font-family: var(--font-main);
  font-size: clamp(28px, 3.5vw, 48px);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--c-white);
  margin-bottom: 20px;
}

.section-desc {
  font-size: 16px;
  color: var(--c-sub);
  max-width: 520px;
  line-height: 1.7;
}

.section-header {
  text-align: center;
  margin-bottom: 72px;
}
.section-header .section-desc { margin: 0 auto; }

/* ── BUTTONS ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  font-family: var(--font-main);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--ts-med);
  white-space: nowrap;
}

.btn-primary {
  background: var(--c-white);
  color: var(--c-black);
  border-color: var(--c-white);
}
.btn-primary:hover {
  background: var(--c-off-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(255,255,255,0.12);
}

.btn-ghost {
  background: transparent;
  color: var(--c-meta);
  border-color: var(--c-border-2);
}
.btn-ghost:hover {
  border-color: var(--c-muted);
  color: var(--c-white);
  transform: translateY(-2px);
}

.btn-large { padding: 16px 40px; font-size: 16px; }

/* ── LOGO TYPOGRAPHY ────────────────────────────────────────── */
.logo-info  { color: var(--c-white); font-weight: 600; letter-spacing: 0.12em; }
.logo-tech  { color: var(--c-white); font-weight: 300; letter-spacing: 0.12em; }
.logo-ti    { color: var(--c-sub);   font-weight: 300; letter-spacing: 0.12em; }

/* ============================================================
   SPLASH SCREEN
   ============================================================ */
#splash-screen {
  position: fixed;
  inset: 0;
  background: #000;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}
#splash-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

#particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.splash-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 360px;
  height: 360px;
}

.splash-rings {
  position: absolute;
  inset: 0;
}

.ring-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.ring {
  fill: none;
  stroke: #fff;
  stroke-linecap: round;
}

.ring-1 {
  stroke-width: 0.8;
  stroke-dasharray: 820;
  stroke-dashoffset: 820;
  animation: drawRing 1.2s cubic-bezier(0.4,0,0.2,1) 0.2s forwards;
}

.ring-2 {
  stroke-width: 0.5;
  stroke: rgba(255,255,255,0.3);
  stroke-dasharray: 692;
  stroke-dashoffset: 692;
  animation: drawRing 1.0s cubic-bezier(0.4,0,0.2,1) 0.5s forwards;
}

.ring-3 {
  stroke-width: 0.3;
  stroke: rgba(255,255,255,0.15);
  stroke-dasharray: 566;
  stroke-dashoffset: 566;
  animation: drawRing 0.8s cubic-bezier(0.4,0,0.2,1) 0.7s forwards;
}

.ring-scan {
  fill: none;
  stroke: none;
  r: 120;
  cx: 150;
  cy: 150;
  /* orbiting dot handled by JS */
}

@keyframes drawRing {
  to { stroke-dashoffset: 0; }
}

.splash-logo {
  position: relative;
  z-index: 3;
  text-align: center;
  opacity: 0;
  animation: fadeInLogo 0.6s ease 1.0s forwards;
}

.splash-logo-text {
  font-family: var(--font-main);
  font-size: 28px;
  font-weight: 300;
  letter-spacing: 0.25em;
  color: #fff;
}

.splash-logo-sub {
  font-size: 9px;
  letter-spacing: 0.35em;
  color: rgba(255,255,255,0.3);
  margin-top: 8px;
  text-transform: uppercase;
}

@keyframes fadeInLogo {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}

/* Glitch */
.splash-glitch-overlay {
  position: absolute;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  animation: glitchFlash 3s steps(1) 0.8s infinite;
  opacity: 0;
}

@keyframes glitchFlash {
  0%   { opacity: 0; }
  2%   { opacity: 1; background: linear-gradient(transparent 48%, rgba(255,255,255,0.03) 50%, transparent 52%); }
  4%   { opacity: 0; }
  10%  { opacity: 1; background: linear-gradient(transparent 20%, rgba(255,255,255,0.02) 22%, transparent 24%); transform: translateX(-1px); }
  11%  { opacity: 0; transform: none; }
  100% { opacity: 0; }
}

/* Noise */
.splash-noise {
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* Scanline */
.splash-scanline {
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 6;
  pointer-events: none;
  background: linear-gradient(transparent 90%, rgba(255,255,255,0.015) 100%);
  background-size: 100% 4px;
  animation: scanMove 4s linear infinite;
}

@keyframes scanMove {
  to { top: 100%; }
}

/* Progress */
.splash-progress {
  position: absolute;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 1px;
  background: rgba(255,255,255,0.1);
  z-index: 10;
  overflow: hidden;
  border-radius: 1px;
}

.splash-progress-bar {
  height: 100%;
  width: 0%;
  background: rgba(255,255,255,0.7);
  transition: width 0.1s linear;
}

.splash-skip {
  position: absolute;
  bottom: 24px;
  right: 32px;
  font-size: 10px;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.2);
  z-index: 10;
  cursor: pointer;
  transition: color 0.2s;
}
.splash-skip:hover { color: rgba(255,255,255,0.5); }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  padding: 24px 0;
  transition: background var(--ts-med), padding var(--ts-med), border-color var(--ts-med);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: rgba(5,5,5,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 16px 0;
  border-bottom-color: var(--c-border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 40px;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.logo-mark {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.logo-mark.small { width: 28px; height: 28px; }

.logo-circle-svg { width: 100%; height: 100%; overflow: visible; }

.logo-circle-outline {
  fill: none;
  stroke: rgba(255,255,255,0.85);
  stroke-width: 1.2;
}

.logo-circle-inner {
  fill: none;
  stroke: rgba(255,255,255,0.2);
  stroke-width: 0.6;
}

.logo-text {
  font-family: var(--font-main);
  font-size: 16px;
  letter-spacing: 0.08em;
  line-height: 1;
}

.main-nav { margin-left: auto; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  font-size: 13px;
  font-weight: 400;
  color: var(--c-sub);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: color var(--ts-fast), background var(--ts-fast);
  letter-spacing: 0.02em;
}
.nav-link:hover, .nav-link.active { color: var(--c-white); }

.header-cta { flex-shrink: 0; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--c-white);
  transition: all 0.3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero-section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 140px 0 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 80% at 50% -10%, rgba(60,60,60,0.25) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(30,30,30,0.2) 0%, transparent 60%),
    var(--c-black);
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Decorative circles */
.hero-circles { position: absolute; inset: 0; pointer-events: none; }
.hero-circle {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--c-border);
}
.hc-1 { width: 600px; height: 600px; top: 50%; left: 50%; transform: translate(-50%,-50%); animation: rotateSlow 40s linear infinite; }
.hc-2 { width: 900px; height: 900px; top: 50%; left: 50%; transform: translate(-50%,-50%); animation: rotateSlow 70s linear infinite reverse; border-color: var(--c-border) transparent; border-style: dashed; }
.hc-3 { width: 1200px; height: 1200px; top: 50%; left: 50%; transform: translate(-50%,-50%); animation: rotateSlow 90s linear infinite; border-color: rgba(255,255,255,0.03); }

@keyframes rotateSlow { to { transform: translate(-50%,-50%) rotate(360deg); } }

/* Hero content */
.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 28px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-sub);
  border: 1px solid var(--c-border-2);
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.02);
  animation: fadeSlideDown 0.8s ease 0.2s both;
}
.hero-badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-white);
  box-shadow: 0 0 8px rgba(255,255,255,0.5);
  animation: pulse 2s ease infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; box-shadow: 0 0 8px rgba(255,255,255,0.5); }
  50%      { opacity: 0.5; box-shadow: 0 0 16px rgba(255,255,255,0.3); }
}

/* Hero Logo Display */
.hero-logo-display {
  position: relative;
  width: 260px;
  height: 260px;
  animation: fadeSlideDown 0.8s ease 0.3s both;
}

.hero-logo-ring-wrap {
  position: relative;
  width: 100%;
  height: 100%;
}

.hero-ring-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.hero-ring {
  fill: none;
  stroke-linecap: round;
}
.hr-1 {
  stroke: rgba(255,255,255,0.12);
  stroke-width: 0.8;
  animation: heroRingRotate 30s linear infinite;
  transform-origin: 200px 200px;
}
.hr-2 {
  stroke: rgba(255,255,255,0.06);
  stroke-width: 0.5;
  stroke-dasharray: 8 4;
  animation: heroRingRotate 20s linear infinite reverse;
  transform-origin: 200px 200px;
}
.hr-3 {
  stroke: rgba(255,255,255,0.04);
  stroke-width: 0.4;
  animation: heroRingRotate 50s linear infinite;
  transform-origin: 200px 200px;
}

@keyframes heroRingRotate { to { transform: rotate(360deg); } }

.hero-ring-dot-track {
  fill: none;
  stroke: none;
}

.hero-logo-inner {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
}

.hero-logo-text {
  font-family: var(--font-main);
  font-size: 22px;
  font-weight: 300;
  letter-spacing: 0.2em;
}

/* Hero text */
.hero-headline {
  font-family: var(--font-main);
  font-size: clamp(32px, 4.5vw, 60px);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--c-white);
  animation: fadeSlideDown 0.8s ease 0.4s both;
}

.hero-headline-accent {
  font-style: italic;
  color: var(--c-meta);
}

.hero-sub {
  font-size: clamp(14px, 1.5vw, 17px);
  color: var(--c-sub);
  max-width: 580px;
  line-height: 1.75;
  animation: fadeSlideDown 0.8s ease 0.5s both;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  animation: fadeSlideDown 0.8s ease 0.6s both;
}

.hero-metrics {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-top: 16px;
  padding-top: 32px;
  border-top: 1px solid var(--c-border);
  animation: fadeSlideDown 0.8s ease 0.7s both;
}

.metric-divider {
  width: 1px;
  height: 32px;
  background: var(--c-border-2);
}

.metric { text-align: center; }

.metric-value {
  display: block;
  font-family: var(--font-main);
  font-size: 28px;
  font-weight: 500;
  color: var(--c-white);
  line-height: 1;
  margin-bottom: 6px;
}
.metric-value em { font-style: normal; font-size: 18px; color: var(--c-sub); font-weight: 300; }

.metric-label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-muted);
  text-transform: uppercase;
}

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--c-muted);
  text-transform: uppercase;
  animation: fadeInScroll 1s ease 2s both;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--c-muted));
  animation: scrollPulse 2s ease infinite;
}

@keyframes scrollPulse {
  0%,100% { transform: scaleY(1); opacity: 1; }
  50%      { transform: scaleY(0.5); opacity: 0.4; }
}

@keyframes fadeInScroll { from { opacity: 0; } to { opacity: 1; } }

/* Hero animations */
@keyframes fadeSlideDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: none; }
}

/* ============================================================
   SOLUTIONS SECTION
   ============================================================ */
.solutions-section {
  background: var(--c-dark);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}

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

.solution-card {
  position: relative;
  background: var(--c-card);
  padding: 40px 36px;
  cursor: default;
  transition: background var(--ts-med);
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 0% 0%, rgba(255,255,255,0.03) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--ts-med);
}

.solution-card:hover { background: var(--c-dark-3); }
.solution-card:hover::before { opacity: 1; }

.card-icon {
  width: 44px;
  height: 44px;
  color: var(--c-meta);
  margin-bottom: 24px;
  transition: color var(--ts-med);
}
.solution-card:hover .card-icon { color: var(--c-white); }

.card-title {
  font-family: var(--font-main);
  font-size: 17px;
  font-weight: 500;
  color: var(--c-white);
  margin-bottom: 12px;
  line-height: 1.3;
}

.card-desc {
  font-size: 13.5px;
  color: var(--c-sub);
  line-height: 1.7;
  margin-bottom: 24px;
}

.card-arrow {
  width: 20px;
  height: 20px;
  color: var(--c-muted);
  transition: color var(--ts-med), transform var(--ts-med);
  opacity: 0;
}
.solution-card:hover .card-arrow {
  opacity: 1;
  color: var(--c-meta);
  transform: translateX(4px);
}

/* ============================================================
   DIFFERENTIALS SECTION
   ============================================================ */
.differentials-section {
  background: var(--c-black);
}

.diff-bg-line {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 100%;
  background: linear-gradient(to bottom, transparent, var(--c-border) 20%, var(--c-border) 80%, transparent);
  pointer-events: none;
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
}

.diff-item {
  display: flex;
  gap: 28px;
  padding: 40px 48px;
  border-bottom: 1px solid var(--c-border);
  border-right: 1px solid var(--c-border);
  transition: background var(--ts-med);
  position: relative;
  overflow: hidden;
}

.diff-item:nth-child(even) { border-right: none; }
.diff-item:nth-last-child(-n+2) { border-bottom: none; }

.diff-item::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: rgba(255,255,255,0.15);
  transition: width 0.4s ease;
}
.diff-item:hover::after { width: 100%; }

.diff-num {
  font-family: var(--font-main);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--c-muted);
  flex-shrink: 0;
  padding-top: 2px;
}

.diff-title {
  font-family: var(--font-main);
  font-size: 16px;
  font-weight: 500;
  color: var(--c-white);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.diff-desc {
  font-size: 13.5px;
  color: var(--c-sub);
  line-height: 1.7;
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about-section {
  background: var(--c-dark-2);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

/* About rings animation */
.about-circle-wrap {
  position: relative;
  width: 320px;
  height: 320px;
  margin: 0 auto;
}

.about-ring-anim {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.ar-1 {
  fill: none;
  stroke: rgba(255,255,255,0.1);
  stroke-width: 0.8;
  animation: rotateSlow 20s linear infinite;
  transform-origin: 160px 160px;
}
.ar-2 {
  fill: none;
  stroke: rgba(255,255,255,0.05);
  stroke-width: 0.5;
  stroke-dasharray: 6 3;
  animation: rotateSlow 35s linear infinite reverse;
  transform-origin: 160px 160px;
}
.ar-3 {
  fill: none;
  stroke: rgba(255,255,255,0.03);
  stroke-width: 0.4;
  animation: rotateSlow 55s linear infinite;
  transform-origin: 160px 160px;
}
.ar-dot-track { fill: none; stroke: none; }

.about-logo-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.about-logo-text {
  font-family: var(--font-main);
  font-size: 20px;
  letter-spacing: 0.2em;
  font-weight: 300;
}

.about-logo-sub {
  font-size: 9px;
  letter-spacing: 0.25em;
  color: var(--c-muted);
  text-transform: uppercase;
}

.about-text {
  font-size: 15px;
  color: var(--c-sub);
  line-height: 1.8;
  margin-bottom: 20px;
}
.about-text:last-of-type { margin-bottom: 36px; }

.about-stats {
  display: flex;
  gap: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--c-border);
}

.astat-val {
  display: block;
  font-family: var(--font-main);
  font-size: 30px;
  font-weight: 500;
  color: var(--c-white);
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.astat-label {
  display: block;
  font-size: 11px;
  color: var(--c-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ============================================================
   PILLARS SECTION
   ============================================================ */
.pillars-section {
  background: var(--c-black);
}

.pillars-flow {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  max-width: 1000px;
  margin: 0 auto;
}

.pillar {
  flex: 1;
  text-align: center;
  padding: 0 24px;
  position: relative;
}

.pillar-icon-wrap {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  color: var(--c-meta);
  position: relative;
}

.pillar-icon-wrap::before {
  content: '';
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  border: 1px solid var(--c-border);
}

.pillar-title {
  font-family: var(--font-main);
  font-size: 16px;
  font-weight: 500;
  color: var(--c-white);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.pillar-desc {
  font-size: 13px;
  color: var(--c-sub);
  line-height: 1.7;
}

.pillar-connector {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 44px;
  position: relative;
  flex-shrink: 0;
}

.pillar-connector-dot {
  position: absolute;
  top: 44px;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-muted);
  margin-top: 0;
}

/* ============================================================
   CTA SECTION
   ============================================================ */
.cta-section {
  background: var(--c-dark-3);
  border-top: 1px solid var(--c-border);
  overflow: hidden;
}

.cta-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.cta-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--c-border);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.cr-1 { width: 400px; height: 400px; animation: rotateSlow 25s linear infinite; }
.cr-2 { width: 700px; height: 700px; border-style: dashed; border-color: rgba(255,255,255,0.04); animation: rotateSlow 40s linear infinite reverse; }
.cr-3 { width: 1000px; height: 1000px; border-color: rgba(255,255,255,0.02); animation: rotateSlow 65s linear infinite; }

.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.cta-title {
  font-family: var(--font-main);
  font-size: clamp(28px, 3.5vw, 46px);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.cta-sub {
  font-size: 15px;
  color: var(--c-sub);
  line-height: 1.75;
  max-width: 480px;
}

.cta-actions {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
  justify-content: center;
}

.cta-contact-info {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.cta-contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--c-sub);
}
.cta-contact-item svg { width: 16px; height: 16px; flex-shrink: 0; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--c-black-2);
  border-top: 1px solid var(--c-border);
}

.footer-top { padding: 72px 0 60px; }

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.footer-desc {
  font-size: 13.5px;
  color: var(--c-sub);
  line-height: 1.75;
  margin-bottom: 28px;
  max-width: 260px;
}

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

.social-link {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-border-2);
  display: flex; align-items: center; justify-content: center;
  color: var(--c-muted);
  transition: all var(--ts-med);
}
.social-link svg { width: 16px; height: 16px; }
.social-link:hover { border-color: var(--c-muted); color: var(--c-white); background: rgba(255,255,255,0.04); }

.footer-nav-title {
  font-family: var(--font-main);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-meta);
  margin-bottom: 20px;
}

.footer-nav ul { display: flex; flex-direction: column; gap: 10px; }

.footer-link {
  font-size: 13.5px;
  color: var(--c-sub);
  transition: color var(--ts-fast);
}
.footer-link:hover { color: var(--c-white); }

.footer-contact ul {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13.5px;
  color: var(--c-sub);
}
.footer-contact li svg { width: 14px; height: 14px; flex-shrink: 0; margin-top: 2px; }

.footer-bottom {
  border-top: 1px solid var(--c-border);
  padding: 20px 0;
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-copy {
  font-size: 12px;
  color: var(--c-muted);
}
.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--c-muted);
}
.footer-bottom-links .footer-link { font-size: 12px; color: var(--c-muted); }

/* ============================================================
   REVEAL ANIMATIONS (IntersectionObserver)
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }
.reveal[data-delay="4"] { transition-delay: 0.4s; }
.reveal[data-delay="5"] { transition-delay: 0.5s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  :root { --section-gap: 80px; }

  .header-cta { display: none; }

  .nav-toggle { display: flex; }

  .main-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    background: rgba(5,5,5,0.98);
    backdrop-filter: blur(20px);
    padding: 80px 32px 40px;
    transform: translateY(-100%);
    transition: transform 0.4s cubic-bezier(0.16,1,0.3,1);
    z-index: 890;
    border-bottom: 1px solid var(--c-border);
  }

  .main-nav.open { transform: none; }

  .nav-list { flex-direction: column; align-items: flex-start; gap: 4px; }
  .nav-link { font-size: 20px; padding: 12px 0; }

  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-circle-wrap { width: 260px; height: 260px; }

  .diff-grid { grid-template-columns: 1fr; }
  .diff-item { border-right: none; }
  .diff-item:nth-last-child(-n+2) { border-bottom: 1px solid var(--c-border); }
  .diff-item:last-child { border-bottom: none; }

  .diff-bg-line { display: none; }

  .pillars-flow { flex-wrap: wrap; gap: 40px; }
  .pillar-connector { display: none; }
  .pillar { min-width: 200px; }

  .hero-logo-display { width: 200px; height: 200px; }

  .cta-actions { flex-direction: column; gap: 24px; }
}

@media (max-width: 640px) {
  :root { --section-gap: 60px; }
  .container { padding: 0 20px; }

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

  .hero-metrics {
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero-ctas { flex-direction: column; width: 100%; }
  .hero-ctas .btn { width: 100%; justify-content: center; }

  .about-stats { flex-wrap: wrap; gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .diff-item { padding: 28px 24px; }

  .hero-logo-display { width: 160px; height: 160px; }

  .br-desktop { display: none; }
}