/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #1a1a2e;
  background: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* === Colors === */
:root {
  --gold: #c5a24d;
  --gold-light: #e8d48b;
  --teal: #0d9488;
  --teal-dark: #0a7a70;
  --navy: #0f172a;
  --navy-light: #1e293b;
  --slate: #334155;
  --blue: #3b82f6;
  --purple: #8b5cf6;
  --amber: #f59e0b;
  --rose: #f43f5e;
  --green: #10b981;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-400: #94a3b8;
  --gray-600: #475569;
  --gray-800: #1e293b;
}

/* === Nav === */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.nav__inner {
  max-width: 1200px; margin: 0 auto;
  padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.nav__logo {
  display: flex; align-items: center; gap: 10px;
}
.nav__logo-img { width: 36px; height: 36px; border-radius: 50%; }
.nav__logo-text {
  font-size: 1.15rem; font-weight: 700; color: #fff;
  letter-spacing: 0.04em;
}
.nav__links {
  display: flex; align-items: center; gap: 32px;
}
.nav__links a {
  font-size: 0.875rem; font-weight: 500; color: var(--gray-400);
  transition: color 0.2s;
}
.nav__links a:hover { color: #fff; }
.nav__cta {
  background: var(--gold) !important; color: var(--navy) !important;
  padding: 8px 20px !important; border-radius: 8px;
  font-weight: 600 !important; font-size: 0.875rem !important;
  transition: background 0.2s !important;
}
.nav__cta:hover { background: var(--gold-light) !important; }
.nav__toggle { display: none; background: none; border: none; cursor: pointer; }
.nav__toggle span {
  display: block; width: 22px; height: 2px; background: #fff;
  margin: 5px 0; transition: 0.3s;
}

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 28px; border-radius: 10px;
  font-size: 0.95rem; font-weight: 600;
  transition: all 0.2s; cursor: pointer; border: none;
}
.btn--primary {
  background: var(--gold); color: var(--navy);
}
.btn--primary:hover { background: var(--gold-light); transform: translateY(-1px); }
.btn--outline {
  background: transparent; color: #fff;
  border: 1.5px solid rgba(255,255,255,0.25);
}
.btn--outline:hover { border-color: rgba(255,255,255,0.5); background: rgba(255,255,255,0.05); }
.btn--ghost {
  background: transparent; color: #fff;
  border: 1.5px solid rgba(255,255,255,0.3);
}
.btn--ghost:hover { border-color: var(--gold); color: var(--gold); }
.btn--lg { padding: 14px 36px; font-size: 1rem; }

/* === Hero === */
.hero {
  position: relative; overflow: hidden;
  padding: 160px 24px 100px;
  background: var(--navy);
  text-align: center;
}
.hero__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 20%, rgba(197, 162, 77, 0.08), transparent),
    radial-gradient(ellipse 60% 50% at 80% 60%, rgba(13, 148, 136, 0.06), transparent),
    radial-gradient(ellipse 50% 40% at 20% 70%, rgba(59, 130, 246, 0.04), transparent);
}
.hero__inner {
  position: relative; max-width: 860px; margin: 0 auto;
}
.hero__badge {
  display: inline-block;
  padding: 6px 16px; border-radius: 100px;
  background: rgba(197, 162, 77, 0.12);
  color: var(--gold); font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.03em; margin-bottom: 28px;
  border: 1px solid rgba(197, 162, 77, 0.2);
}
.hero__title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800; color: #fff;
  line-height: 1.1; margin-bottom: 24px;
  letter-spacing: -0.02em;
}
.hero__highlight {
  background: linear-gradient(135deg, var(--gold), var(--teal));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__subtitle {
  font-size: 1.15rem; color: var(--gray-400);
  max-width: 640px; margin: 0 auto 36px;
  line-height: 1.7;
}
.hero__actions {
  display: flex; gap: 16px; justify-content: center;
  flex-wrap: wrap; margin-bottom: 56px;
}
.hero__metrics {
  display: flex; justify-content: center; gap: 48px; flex-wrap: wrap;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.hero__metric { text-align: center; }
.hero__metric-value {
  display: block; font-size: 2rem; font-weight: 800; color: var(--gold);
  letter-spacing: -0.02em;
}
.hero__metric-label {
  display: block; font-size: 0.8rem; color: var(--gray-400);
  margin-top: 4px; font-weight: 500;
}

/* === Sections === */
.section { padding: 100px 24px; }
.section--dark { background: var(--gray-50); }
.section--contact { padding-top: 140px; }
.section__inner { max-width: 1100px; margin: 0 auto; }
.section__header { text-align: center; margin-bottom: 56px; }
.section__badge {
  display: inline-block;
  padding: 5px 14px; border-radius: 100px;
  background: rgba(13, 148, 136, 0.08);
  color: var(--teal); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase;
  margin-bottom: 16px;
}
.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800; color: var(--navy);
  line-height: 1.15; letter-spacing: -0.02em;
}
.section__subtitle {
  font-size: 1.05rem; color: var(--gray-600);
  max-width: 600px; margin: 16px auto 0;
  line-height: 1.7;
}

/* === Problem Cards === */
.problems {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.problem-card {
  background: #fff; border-radius: 16px;
  padding: 32px; text-align: center;
  border: 1px solid var(--gray-200);
  transition: transform 0.2s, box-shadow 0.2s;
}
.problem-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}
.problem-card__icon {
  width: 48px; height: 48px; margin: 0 auto 20px;
  color: var(--rose);
}
.problem-card__icon svg { width: 100%; height: 100%; }
.problem-card h3 {
  font-size: 1.1rem; font-weight: 700; color: var(--navy);
  margin-bottom: 10px;
}
.problem-card p { font-size: 0.92rem; color: var(--gray-600); line-height: 1.65; }

/* === Feature Cards === */
.features {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.feature-card {
  background: var(--gray-50); border-radius: 16px;
  padding: 28px; border: 1px solid var(--gray-200);
  transition: transform 0.2s, box-shadow 0.2s;
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}
.feature-card--highlight {
  background: #fff;
  border: 1px solid var(--gray-200);
}
.feature-card__icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.feature-card__icon svg { width: 24px; height: 24px; }
.feature-card__icon--blue { background: rgba(59, 130, 246, 0.1); color: var(--blue); }
.feature-card__icon--teal { background: rgba(13, 148, 136, 0.1); color: var(--teal); }
.feature-card__icon--amber { background: rgba(245, 158, 11, 0.1); color: var(--amber); }
.feature-card__icon--purple { background: rgba(139, 92, 246, 0.1); color: var(--purple); }
.feature-card__icon--rose { background: rgba(244, 63, 94, 0.1); color: var(--rose); }
.feature-card__icon--green { background: rgba(16, 185, 129, 0.1); color: var(--green); }
.feature-card h3 {
  font-size: 1.05rem; font-weight: 700; color: var(--navy);
  margin-bottom: 8px;
}
.feature-card p { font-size: 0.9rem; color: var(--gray-600); line-height: 1.65; }
.feature-card__list {
  margin-top: 16px; padding-top: 16px;
  border-top: 1px solid var(--gray-200);
}
.feature-card__list li {
  font-size: 0.84rem; color: var(--gray-600);
  padding: 4px 0 4px 20px;
  position: relative;
}
.feature-card__list li::before {
  content: '';
  position: absolute; left: 0; top: 11px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--teal);
}

/* === Steps === */
.steps { max-width: 700px; margin: 0 auto; }
.step {
  display: flex; gap: 28px; align-items: flex-start;
  padding: 28px 0;
  border-bottom: 1px solid var(--gray-200);
}
.step:last-child { border-bottom: none; }
.step__number {
  font-size: 2rem; font-weight: 800;
  color: var(--gold); opacity: 0.7;
  line-height: 1; min-width: 48px;
}
.step__content h3 {
  font-size: 1.1rem; font-weight: 700; color: var(--navy);
  margin-bottom: 6px;
}
.step__content p { font-size: 0.92rem; color: var(--gray-600); line-height: 1.65; }

/* === Video Cards === */
.videos {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px;
}
.video-card {
  background: var(--gray-50); border-radius: 16px;
  overflow: hidden; border: 1px solid var(--gray-200);
  transition: transform 0.2s, box-shadow 0.2s;
}
.video-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}
.video-card__embed {
  position: relative;
  padding-bottom: 56.25%;
  background: var(--navy);
}
.video-card__embed iframe {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
}
.video-card__info {
  padding: 24px;
}
.video-card__info h3 {
  font-size: 1.1rem; font-weight: 700; color: var(--navy);
  margin-bottom: 8px;
}
.video-card__info p { font-size: 0.9rem; color: var(--gray-600); line-height: 1.65; }

/* === Compliance === */
.compliance-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.compliance-card {
  background: #fff; border-radius: 16px;
  padding: 32px; border: 1px solid var(--gray-200);
  position: relative;
  transition: transform 0.2s;
}
.compliance-card:hover { transform: translateY(-3px); }
.compliance-card h3 {
  font-size: 1.1rem; font-weight: 700; color: var(--navy);
  margin-bottom: 10px;
}
.compliance-card p { font-size: 0.9rem; color: var(--gray-600); line-height: 1.65; }
.compliance-card__tag {
  display: inline-block; margin-top: 16px;
  padding: 4px 12px; border-radius: 6px;
  background: rgba(13, 148, 136, 0.08);
  color: var(--teal); font-size: 0.75rem; font-weight: 600;
}

/* === Architecture === */
.arch-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.arch-card {
  padding: 24px; border-radius: 12px;
  border: 1px solid var(--gray-200);
  background: var(--gray-50);
  transition: border-color 0.2s;
}
.arch-card:hover { border-color: var(--teal); }
.arch-card h4 {
  font-size: 0.95rem; font-weight: 700; color: var(--navy);
  margin-bottom: 6px;
}
.arch-card p { font-size: 0.85rem; color: var(--gray-600); line-height: 1.6; }

/* === CTA === */
.cta {
  padding: 100px 24px; text-align: center;
  background: var(--navy);
  position: relative; overflow: hidden;
}
.cta::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 60% at 50% 50%, rgba(197, 162, 77, 0.06), transparent);
}
.cta__inner { position: relative; max-width: 600px; margin: 0 auto; }
.cta__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800; color: #fff;
  line-height: 1.15; margin-bottom: 16px;
}
.cta__text {
  font-size: 1.1rem; color: var(--gray-400);
  margin-bottom: 36px;
}
.cta__actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* === Footer === */
.footer {
  background: var(--navy-light);
  padding: 64px 24px 32px;
  border-top: 1px solid rgba(255,255,255,0.04);
}
.footer__inner { max-width: 1100px; margin: 0 auto; }
.footer__grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer__logo { width: 40px; height: 40px; border-radius: 50%; margin-bottom: 16px; }
.footer__tagline {
  font-size: 0.9rem; font-weight: 600; color: var(--gold);
  margin-bottom: 8px;
}
.footer__desc { font-size: 0.84rem; color: var(--gray-400); line-height: 1.6; }
.footer__col h4 {
  font-size: 0.8rem; font-weight: 600; color: rgba(255,255,255,0.6);
  text-transform: uppercase; letter-spacing: 0.06em;
  margin-bottom: 16px;
}
.footer__col ul li { margin-bottom: 10px; }
.footer__col a {
  font-size: 0.875rem; color: var(--gray-400);
  transition: color 0.2s;
}
.footer__col a:hover { color: #fff; }
.footer__bottom {
  padding-top: 24px;
  text-align: center;
}
.footer__bottom p { font-size: 0.8rem; color: var(--gray-400); }

/* === Contact === */
.contact-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
  max-width: 900px; margin: 0 auto;
}
.contact-card {
  text-align: center; padding: 36px 28px;
  background: var(--gray-50); border-radius: 16px;
  border: 1px solid var(--gray-200);
  transition: transform 0.2s, box-shadow 0.2s;
}
.contact-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}
.contact-card__icon {
  width: 48px; height: 48px; margin: 0 auto 18px;
  color: var(--teal);
}
.contact-card__icon svg { width: 100%; height: 100%; }
.contact-card h3 {
  font-size: 1.05rem; font-weight: 700; color: var(--navy);
  margin-bottom: 8px;
}
.contact-card p { font-size: 0.88rem; color: var(--gray-600); line-height: 1.6; margin-bottom: 16px; }
.contact-card__link {
  font-size: 0.9rem; font-weight: 600; color: var(--teal);
  transition: color 0.2s;
}
.contact-card__link:hover { color: var(--teal-dark); }

/* === Responsive === */
@media (max-width: 900px) {
  .problems,
  .features,
  .arch-grid,
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 640px) {
  .nav__links {
    display: none; flex-direction: column;
    position: absolute; top: 68px; left: 0; right: 0;
    background: rgba(15, 23, 42, 0.98);
    padding: 24px; gap: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }
  .nav__links.active { display: flex; }
  .nav__toggle { display: block; }
  .problems,
  .features,
  .videos,
  .compliance-grid,
  .arch-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .hero { padding: 130px 20px 72px; }
  .hero__metrics { gap: 28px; }
  .step { flex-direction: column; gap: 12px; }
}