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

:root {
  --white: #fffbfb;
  --black: #000000;
  --gray-50: #fafafa;
  --gray-100: #f5f5f5;
  --gray-200: #e5e5e5;
  --gray-400: #a3a3a3;
  --gray-500: #737373;
  --gray-600: #525252;
  --gray-700: #404040;
  --gray-800: #262626;
  --gray-900: #171717;
}

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

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--white);
  color: var(--black);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.15rem; }

p {
  color: var(--gray-600);
  line-height: 1.7;
}

a {
  color: var(--black);
  text-decoration: none;
  transition: opacity 0.2s;
}

.logo:hover {
  opacity: 0.7;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 6rem 0;
}

/* ── Navbar ── */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 251, 251, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--gray-200);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  overflow: hidden;
  background: var(--black);
}

.logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--gray-600);
  transition: color 0.2s;
}

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

.nav-links a.active {
  color: var(--black);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--gray-200);
  background: transparent;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  text-decoration: none;
  color: var(--gray-600);
  letter-spacing: 0.03em;
}

.lang-switch:hover {
  background: var(--gray-100);
  border-color: var(--gray-400);
  color: var(--black);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--black);
  margin: 4px 0;
  transition: transform 0.3s, opacity 0.3s;
}

/* ── Hero ── */

.hero {
  padding: 10rem 0 6rem;
  text-align: center;
}

.hero h1 {
  margin-bottom: 1.2rem;
}

.hero-sub {
  max-width: 560px;
  margin: 0 auto 2.5rem;
  font-size: 1.08rem;
}

.hero-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 1.2rem;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  background: var(--black);
  color: var(--white);
  font-weight: 500;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  text-decoration: none;
}

.hero-cta:hover {
  background: var(--gray-800);
  color: var(--white);
  transform: translateY(-1px);
}

.hero-cta svg {
  width: 16px;
  height: 16px;
}

/* ── Services ── */

.services {
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-header p {
  max-width: 520px;
  margin: 0.8rem auto 0;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.8rem;
}

.service-card {
  background: var(--white);
  padding: 2.2rem 1.8rem;
  border: 1px solid var(--gray-200);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.service-card:hover {
  border-color: var(--gray-400);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.service-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--black);
  color: var(--white);
  margin-bottom: 1.4rem;
}

.service-icon svg {
  width: 22px;
  height: 22px;
}

.service-card h3 {
  margin-bottom: 0.65rem;
}

.service-card p {
  font-size: 0.9rem;
}

/* ── About ── */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text h2 {
  margin-bottom: 1.5rem;
}

.about-text p {
  margin-bottom: 1rem;
}

.about-visual {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.stat-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.stat-box {
  padding: 1.8rem;
  border: 1px solid var(--gray-200);
  text-align: center;
}

.stat-box .number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--black);
  letter-spacing: -0.03em;
  margin-bottom: 0.25rem;
}

.stat-box .label {
  font-size: 0.82rem;
  color: var(--gray-500);
}

/* ── Contact ── */

.contact {
  background: var(--black);
  color: var(--white);
  text-align: center;
  padding: 5rem 0;
}

.contact h2 {
  color: var(--white);
  margin-bottom: 1rem;
}

.contact p {
  color: var(--gray-400);
  max-width: 460px;
  margin: 0 auto 2rem;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--white);
  font-size: 1.15rem;
  font-weight: 500;
  padding: 0.75rem 1.8rem;
  border: 1px solid var(--gray-700);
  transition: border-color 0.2s, background 0.2s;
}

.contact-email:hover {
  border-color: var(--gray-500);
  background: rgba(255, 255, 255, 0.05);
  color: var(--white);
}

.contact-email svg {
  width: 18px;
  height: 18px;
}

/* ── Footer ── */

.footer {
  border-top: 1px solid var(--gray-200);
  padding: 1.8rem 0;
}

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

.footer p {
  font-size: 0.8rem;
  color: var(--gray-500);
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.footer-right a {
  font-size: 0.8rem;
  color: var(--gray-500);
}

.footer-right a:hover {
  color: var(--black);
}

/* ── Responsive ── */

@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  section {
    padding: 4rem 0;
  }

  .hero {
    padding: 7.5rem 0 3.5rem;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .nav-right {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255, 251, 251, 0.98);
    backdrop-filter: blur(14px);
    flex-direction: column;
    padding: 1.5rem 2rem 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

  .nav-right.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-links {
    flex-direction: column;
    gap: 1rem;
  }

  .menu-toggle {
    display: block;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
  }

  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
  }

  .footer .container {
    flex-direction: column;
    gap: 0.8rem;
    text-align: center;
  }
}