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

:root {
  --color-bg: #080B12;
  --color-bg-alt: #0C0F19;
  --color-card: #111521;
  --color-card-hover: #161B2A;
  --color-border: #1A2233;
  --color-border-light: #232B3E;
  --color-accent: #3D8AFF;
  --color-accent-hover: #5C9FFF;
  --color-accent-muted: rgba(61,138,255,0.12);
  --color-mint: #00E0A0;
  --color-mint-hover: #1FF5B8;
  --color-mint-muted: rgba(0,224,160,0.10);
  --color-text: #F0F3FA;
  --color-text-secondary: #99A3B8;
  --color-text-muted: #6B738A;
  --color-white: #FFFFFF;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: 0.25s ease;
}

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* ========== HEADER ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(8,11,18,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header-logo {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-white);
  transition: var(--transition);
}
.header-logo:hover { color: var(--color-accent); }

.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 110;
}
.menu-bar {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}
.menu-toggle.active .menu-bar:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.menu-toggle.active .menu-bar:nth-child(2) { opacity: 0; }
.menu-toggle.active .menu-bar:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ========== NAV OVERLAY ========== */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(8,11,18,0.97);
  backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}
.nav-overlay.open {
  opacity: 1;
  visibility: visible;
}
.nav-overlay-close {
  position: absolute;
  top: 24px;
  right: 32px;
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 1.8rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.nav-overlay-close:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.nav-overlay-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}
.nav-overlay-link {
  font-size: 2.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text-secondary);
  transition: var(--transition);
}
.nav-overlay-link:hover { color: var(--color-accent); }

/* ========== HERO ========== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 32px 80px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at 80% 30%, rgba(61,138,255,0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 20% 70%, rgba(0,224,160,0.06) 0%, transparent 60%);
}
.hero-grid {
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: center;
}
.hero-text { display: flex; flex-direction: column; gap: 24px; }
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.hero-title {
  font-size: clamp(2.6rem, 5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--color-white);
}
.hero-desc {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 540px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 8px;
}

.hero-visual {
  position: relative;
  height: 420px;
}
.hero-stat-card {
  position: absolute;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 2;
  backdrop-filter: blur(10px);
}
.hero-stat-card--top { top: 20px; right: 10px; }
.hero-stat-card--mid { top: 170px; left: 0; }
.hero-stat-card--bot { bottom: 30px; right: 40px; }
.hero-stat-num {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-accent);
}
.hero-stat-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}
.hero-graphic {
  position: absolute;
  inset: 30px;
  z-index: 1;
}
.hero-node {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 20px rgba(61,138,255,0.5);
}
.hero-node--1 { top: 30%; left: 40%; }
.hero-node--2 { top: 55%; left: 25%; background: var(--color-mint); box-shadow: 0 0 20px rgba(0,224,160,0.5); }
.hero-node--3 { top: 25%; left: 65%; width: 20px; height: 20px; }
.hero-node--4 { top: 70%; left: 60%; background: var(--color-mint); box-shadow: 0 0 20px rgba(0,224,160,0.5); }
.hero-line {
  position: absolute;
  height: 2px;
  background: var(--color-border);
  transform-origin: left center;
}
.hero-line--a { width: 120px; top: 35%; left: 45%; transform: rotate(-15deg); }
.hero-line--b { width: 100px; top: 58%; left: 30%; transform: rotate(20deg); }
.hero-line--c { width: 90px; top: 28%; left: 68%; transform: rotate(-8deg); }

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
}
.btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-outline:hover { border-color: var(--color-accent); color: var(--color-accent); }
.btn-full { width: 100%; justify-content: center; }

/* ========== SECTIONS COMMON ========== */
.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-mint);
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--color-white);
  margin-bottom: 24px;
}
.section-label.center,
.section-title.center {
  text-align: center;
  display: block;
}
.section-title.center { margin-left: auto; margin-right: auto; max-width: 700px; }

/* ========== SERVICES ========== */
.services-section {
  padding: 100px 32px;
  background: var(--color-bg-alt);
  position: relative;
}
.services-section .section-title {
  margin-bottom: 56px;
}
.bento-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.bento-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.bento-card:hover {
  border-color: var(--color-border-light);
  background: var(--color-card-hover);
  transform: translateY(-4px);
}
.bento-card--large {
  grid-column: span 2;
}
.bento-card--wide {
  grid-column: span 3;
}
.bento-icon {
  color: var(--color-accent);
  margin-bottom: 4px;
}
.bento-title {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-white);
}
.bento-desc {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

/* ========== ABOUT ========== */
.about-section {
  padding: 100px 32px;
}
.about-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 80px;
  align-items: start;
}
.about-text { display: flex; flex-direction: column; gap: 18px; }
.about-para {
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 600px;
}
.about-visual { display: flex; align-items: center; justify-content: center; }
.about-visual-block {
  width: 100%;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 48px 36px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.about-visual-row {
  display: flex;
  gap: 24px;
}
.about-visual-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  text-align: center;
}
.about-visual-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}
.about-visual-label {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ========== PROCESS ========== */
.process-section {
  padding: 100px 32px;
  background: var(--color-bg-alt);
}
.process-list {
  max-width: 900px;
  margin: 60px auto 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.process-step {
  display: flex;
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid var(--color-border);
}
.process-step:last-child { border-bottom: none; }
.process-num {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-mint);
  min-width: 44px;
  padding-top: 2px;
}
.process-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 8px;
}
.process-desc {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
  max-width: 620px;
}

/* ========== FEATURES ========== */
.features-section {
  padding: 100px 32px;
}
.features-row {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.features-text { display: flex; flex-direction: column; gap: 18px; }
.features-para {
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}
.features-check-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-left: 4px;
}
.features-check-item {
  position: relative;
  padding-left: 32px;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}
.features-check-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  width: 18px;
  height: 18px;
  background: var(--color-mint-muted);
  border-radius: 50%;
  border: 2px solid var(--color-mint);
}
.features-check-item::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 9px;
  width: 8px;
  height: 5px;
  border-left: 2px solid var(--color-mint);
  border-bottom: 2px solid var(--color-mint);
  transform: rotate(-45deg);
}

.features-diagram {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.fd-row {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.fd-block {
  padding: 14px 22px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  text-align: center;
  min-width: 120px;
}
.fd-block--primary {
  background: var(--color-accent-muted);
  color: var(--color-accent);
  border: 1px solid rgba(61,138,255,0.2);
}
.fd-block--accent {
  background: var(--color-mint-muted);
  color: var(--color-mint);
  border: 1px solid rgba(0,224,160,0.2);
}
.fd-block--muted {
  background: var(--color-bg);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.fd-arrow {
  color: var(--color-border-light);
  font-size: 1.2rem;
  font-weight: 700;
}

/* ========== CONTACT ========== */
.contact-section {
  padding: 100px 32px;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
}
.contact-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}
.contact-info { display: flex; flex-direction: column; gap: 18px; }
.contact-para {
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}
.contact-detail { display: flex; flex-direction: column; gap: 4px; }
.contact-detail-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.contact-detail-link, .contact-detail-text {
  font-size: 1rem;
  color: var(--color-text);
  transition: var(--transition);
}
.contact-detail-link:hover { color: var(--color-accent); }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}
.form-input {
  padding: 14px 18px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  transition: var(--transition);
  outline: none;
}
.form-input::placeholder { color: var(--color-text-muted); }
.form-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-muted);
}
.form-textarea { resize: vertical; min-height: 120px; }

/* ========== FOOTER ========== */
.site-footer {
  padding: 64px 32px 32px;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}
.footer-grid {
  max-width: 1280px;
  margin: 0 auto 40px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-brand { display: flex; flex-direction: column; gap: 10px; }
.footer-logo {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-white);
}
.footer-logo:hover { color: var(--color-accent); }
.footer-tagline {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-heading {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}
.footer-link {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  transition: var(--transition);
}
.footer-link:hover { color: var(--color-accent); }
.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  text-align: center;
}
.footer-bottom p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ========== SCROLL REVEAL ========== */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { height: 280px; }
  .hero-stat-card--top { top: 10px; right: 20px; }
  .hero-stat-card--mid { top: 100px; left: 20px; }
  .hero-stat-card--bot { bottom: 10px; right: 60px; }

  .bento-grid { grid-template-columns: 1fr 1fr; }
  .bento-card--large { grid-column: span 2; }
  .bento-card--wide { grid-column: span 2; }

  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .features-row { grid-template-columns: 1fr; gap: 48px; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .header-inner { padding: 14px 20px; }
  .hero-section { padding: 100px 20px 60px; }
  .hero-actions { flex-direction: column; }
  .hero-visual { height: 240px; }
  .hero-stat-num { font-size: 1.5rem; }
  .hero-stat-card { padding: 14px 18px; }

  .bento-grid { grid-template-columns: 1fr; }
  .bento-card--large { grid-column: span 1; }
  .bento-card--wide { grid-column: span 1; }

  .services-section, .about-section, .process-section, .features-section, .contact-section { padding: 72px 20px; }
  .process-step { flex-direction: column; gap: 12px; }

  .fd-row { flex-direction: column; }
  .fd-arrow { transform: rotate(90deg); }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .nav-overlay-link { font-size: 1.6rem; }
}