:root {
  --navy: #0f2237;
  --navy-deep: #09182a;
  --steel: #7896ad;
  --steel-dark: #617f98;
  --white: #ffffff;
  --offwhite: #f5f7fa;
  --text: #18212c;
  --muted: #6b7280;
  --line: rgba(15, 34, 55, 0.08);
  --shadow: 0 20px 50px rgba(10, 25, 45, 0.12);
  --radius: 18px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.5;
}

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

a {
  color: inherit;
}

.container {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
}

.narrow {
  width: min(1180px, calc(100% - 80px));
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 50;
  background: rgba(120, 150, 173, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.header-inner {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
  min-width: 0;
}

.logo-img {
  width: 74px;
  height: 74px;
  object-fit: contain;
  border-radius: 12px;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.brand-name {
  font-size: 24px;
  line-height: 1.05;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.2px;
}

.brand-tagline {
  margin-top: 4px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.82);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 34px;
}

.main-nav a {
  text-decoration: none;
  color: var(--white);
  font-size: 16px;
  position: relative;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: var(--white);
  transition: width 0.25s ease;
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--white);
  font-size: 28px;
  cursor: pointer;
}

.hero {
  position: relative;
  min-height: 100vh;
  padding-top: 92px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(rgba(9, 24, 42, 0.34), rgba(9, 24, 42, 0.34)),
    url("https://images.unsplash.com/photo-1516321318423-f06f85e504b3?auto=format&fit=crop&w=1800&q=80")
    center center / cover no-repeat;
  color: var(--white);
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(8, 20, 36, 0.55) 0%,
    rgba(8, 20, 36, 0.22) 60%,
    rgba(8, 20, 36, 0.18) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 80px 0 130px;
}

.hero-kicker {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 16px;
}

.hero h1 {
  margin: 0 auto;
  max-width: 1100px;
  font-size: clamp(46px, 6vw, 88px);
  line-height: 0.98;
  font-weight: 800;
  letter-spacing: -1px;
}

.hero-description {
  max-width: 940px;
  margin: 28px auto 0;
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.35;
  color: rgba(255, 255, 255, 0.94);
}

.hero-actions {
  margin-top: 38px;
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 62px;
  padding: 0 28px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 18px;
  transition: transform 0.2s ease, opacity 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-light {
  background: var(--white);
  color: var(--navy);
}

.btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.7);
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}

.hero-wave {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 120px;
  background: var(--white);
  clip-path: ellipse(75% 100% at 50% 100%);
}

.section {
  padding: 110px 0;
}

.section-white {
  background: var(--white);
}

.section-accent {
  background: #edf3f8;
}

.section-dark {
  background: var(--navy);
  color: var(--white);
}

.section-contact {
  background: var(--white);
  padding-top: 90px;
  padding-bottom: 110px;
}

.section-title {
  max-width: 760px;
  margin-bottom: 40px;
}

.section-kicker {
  margin: 0 0 10px;
  color: var(--steel-dark);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 13px;
}

.section-title h2,
.expertise-left h2,
.contact-box h2 {
  margin: 0;
  font-size: clamp(30px, 3vw, 48px);
  line-height: 1.08;
}

.split-block {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 34px;
  align-items: center;
  margin-top: 54px;
}

.split-block.reverse {
  grid-template-columns: 0.9fr 1.2fr;
}

.split-block.reverse .visual {
  order: 2;
}

.split-block.reverse .text-panel {
  order: 1;
}

.visual {
  min-height: 420px;
  border-radius: 0;
  box-shadow: var(--shadow);
  background-size: cover;
  background-position: center;
}

.visual-one {
  background-image: url("https://images.unsplash.com/photo-1552664730-d307ca884978?auto=format&fit=crop&w=1400&q=80");
}

.visual-two {
  background-image: url("https://images.unsplash.com/photo-1522202176988-66273c2fd55f?auto=format&fit=crop&w=1400&q=80");
}

.visual-three {
  background-image: url("https://images.unsplash.com/photo-1521737604893-d14cc237f11d?auto=format&fit=crop&w=1400&q=80");
}

.text-panel {
  padding: 10px 10px 10px 24px;
}

.text-panel h3 {
  margin: 0 0 16px;
  font-size: clamp(32px, 3vw, 58px);
  line-height: 1.05;
  font-weight: 800;
}

.text-panel p {
  margin: 0;
  font-size: 19px;
  color: var(--muted);
  max-width: 470px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
}

.card-number {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--steel-dark);
  letter-spacing: 1px;
}

.card h3 {
  margin: 0 0 14px;
  font-size: 24px;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.expertise-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.expertise-left p:last-child {
  max-width: 560px;
  font-size: 18px;
  color: rgba(255, 255, 255, 0.82);
}

.expertise-list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}

.expertise-list li {
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 14px;
  font-size: 17px;
}

.contact-box {
  max-width: 840px;
  margin: 0 auto;
  text-align: center;
  padding: 52px 40px;
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.contact-text {
  margin: 18px auto 0;
  max-width: 650px;
  font-size: 21px;
  color: var(--muted);
}

.contact-text a {
  color: var(--navy);
  text-decoration: none;
}

.site-footer {
  background: #eef2f6;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-inner p {
  margin: 4px 0 0;
  color: var(--muted);
}

.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .main-nav {
    gap: 22px;
  }

  .brand-name {
    font-size: 20px;
  }

  .split-block,
  .split-block.reverse,
  .expertise-grid,
  .cards-grid {
    grid-template-columns: 1fr;
  }

  .split-block.reverse .visual,
  .split-block.reverse .text-panel {
    order: initial;
  }

  .text-panel {
    padding: 0;
  }

  .visual {
    min-height: 340px;
  }
}

@media (max-width: 820px) {
  .header-inner {
    min-height: 82px;
  }

  .logo-img {
    width: 58px;
    height: 58px;
  }

  .brand-name {
    font-size: 18px;
  }

  .brand-tagline {
    font-size: 12px;
  }

  .menu-toggle {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: 82px;
    left: 0;
    right: 0;
    background: rgba(120, 150, 173, 0.98);
    padding: 18px 24px 26px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

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

  .hero {
    min-height: auto;
  }

  .hero-content {
    padding: 72px 0 118px;
  }

  .hero-kicker {
    font-size: 18px;
  }

  .hero h1 {
    font-size: clamp(38px, 9vw, 58px);
    line-height: 1.02;
  }

  .hero-description {
    font-size: 20px;
  }

  .btn {
    width: 100%;
    max-width: 340px;
  }

  .narrow,
  .container {
    width: calc(100% - 32px);
  }

  .section {
    padding: 82px 0;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 540px) {
  .brand-tagline {
    display: none;
  }

  .hero-wave {
    height: 70px;
  }

  .visual {
    min-height: 240px;
  }

  .text-panel h3 {
    font-size: 34px;
  }

  .text-panel p,
  .contact-text {
    font-size: 18px;
  }

  .contact-box {
    padding: 34px 22px;
  }
}