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

:root {
  --bg-primary: #0a0a0b;
  --bg-secondary: #111113;
  --bg-card: #18181b;
  --bg-card-hover: #1f1f23;
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent: #e87b35;
  --accent-hover: #f59e5e;
  --accent-glow: rgba(232, 123, 53, 0.15);
  --border: #27272a;
  --border-light: #3f3f46;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1120px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

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

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

section {
  padding: 96px 0;
}

/* === Nav === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 11, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.nav.scrolled {
  border-bottom-color: var(--border);
  background: rgba(10, 10, 11, 0.95);
}

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

.nav-logo {
  font-weight: 700;
  font-size: 18px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff !important;
  padding: 8px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  transition: background var(--transition), transform var(--transition);
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 6px 0;
  transition: var(--transition);
}

/* === Hero === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 64px;
  position: relative;
  overflow: hidden;
}

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

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-label {
  display: inline-block;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.hero h1 .accent {
  color: var(--accent);
}

.hero-title-sub {
  font-size: clamp(18px, 2.5vw, 24px);
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: 24px;
}

.hero-text {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-photo {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
}

.hero-photo img {
  width: 360px;
  height: 360px;
  object-fit: cover;
  border-radius: 24px;
  border: 3px solid var(--border);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(232, 123, 53, 0.3);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232, 123, 53, 0.4);
}

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

.btn-secondary:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
  transform: translateY(-2px);
}

/* === Section Headers === */
.section-label {
  display: inline-block;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  line-height: 1.15;
}

.section-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.6;
}

.section-header {
  margin-bottom: 56px;
}

/* === About === */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-text p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.about-text p:last-child {
  margin-bottom: 0;
}

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

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  transition: border-color var(--transition), transform var(--transition);
}

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

.stat-value {
  font-size: 36px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.companies-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.company-tag {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* === Services === */
.services-categories {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.service-category {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: border-color var(--transition);
}

.service-category:hover {
  border-color: var(--border-light);
}

.category-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}

.category-icon {
  width: 44px;
  height: 44px;
  background: var(--accent-glow);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.category-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.category-name {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.category-desc {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 28px;
  padding-left: 60px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.service-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: border-color var(--transition), transform var(--transition);
}

.service-item:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.service-name {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
}

.service-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* === Proof / Track Record === */
.proof-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.achievement-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 40px;
}

.achievement-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color var(--transition);
}

.achievement-card:hover {
  border-color: var(--accent);
}

.achievement-metric {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 8px;
}

.achievement-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.conferences-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.conference-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition);
}

.conference-item:hover {
  border-color: var(--border-light);
}

.conf-year {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 4px 8px;
  border-radius: 4px;
  flex-shrink: 0;
  min-width: 44px;
  text-align: center;
}

.conf-details {
  flex: 1;
}

.conf-name {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 2px;
}

.conf-topic {
  font-size: 13px;
  color: var(--text-muted);
}

.conf-link {
  font-size: 12px;
  margin-top: 4px;
}

/* === Testimonials === */
.testimonials {
  background: var(--bg-secondary);
}

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

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), transform var(--transition);
}

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

.testimonial-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-text::before {
  content: '\201C';
  font-size: 32px;
  color: var(--accent);
  font-style: normal;
  line-height: 0;
  display: block;
  margin-bottom: 12px;
}

.testimonial-author {
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.testimonial-name {
  font-size: 15px;
  font-weight: 600;
}

.testimonial-role {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

.testimonial-rel {
  font-size: 11px;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 4px;
}

/* === Advantages === */
.advantages-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
}

.advantages-grid .advantage-card {
  flex: 0 1 calc(33.333% - 16px);
  min-width: 280px;
}

.advantage-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  transition: border-color var(--transition), transform var(--transition);
}

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

.advantage-icon {
  width: 52px;
  height: 52px;
  background: var(--accent-glow);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.advantage-icon svg {
  width: 26px;
  height: 26px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.advantage-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.advantage-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* === CTA / Contact === */
.contact {
  text-align: center;
  padding: 120px 0;
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  bottom: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.contact-inner {
  position: relative;
  z-index: 1;
}

.contact .section-subtitle {
  margin: 0 auto 40px;
  max-width: 500px;
}

.contact-cta-desc {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 16px;
}

.contact-channel {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  color: var(--text-secondary);
  font-size: 14px;
}

/* === Footer === */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

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

.footer-text {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
}

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

/* === Floating CTA === */
.floating-cta {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
}

.floating-cta.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.floating-cta a {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: #fff;
  padding: 14px 24px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 14px;
  box-shadow: 0 8px 32px rgba(232, 123, 53, 0.4);
  transition: all var(--transition);
}

.floating-cta a:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(232, 123, 53, 0.5);
}

.floating-cta svg {
  width: 20px;
  height: 20px;
  fill: #fff;
}

/* === Animations === */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Responsive === */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-text {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-photo {
    order: -1;
  }

  .hero-photo img {
    width: 280px;
    height: 280px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .proof-content {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  section {
    padding: 64px 0;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

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

  .service-category {
    padding: 24px;
  }

  .category-desc {
    padding-left: 0;
  }

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

  .advantages-grid .advantage-card {
    flex: 1 1 100%;
  }

  .achievement-cards {
    grid-template-columns: 1fr;
  }

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

  .hero-photo img {
    width: 220px;
    height: 220px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

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

  .hero h1 {
    font-size: 32px;
  }

  .floating-cta a {
    padding: 12px 20px;
    font-size: 13px;
  }
}