:root {
  --ink: #111827;
  --muted: #5f6b7a;
  --line: rgba(17, 24, 39, 0.12);
  --paper: #f7f4ee;
  --surface: #ffffff;
  --accent: #16a085;
  --accent-dark: #0b6f61;
  --night: #0d1620;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -64px;
  z-index: 20;
  padding: 10px 14px;
  background: var(--surface);
  color: var(--ink);
  border-radius: 4px;
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px clamp(18px, 5vw, 72px);
  color: #fff;
  background: linear-gradient(180deg, rgba(13, 22, 32, 0.74), rgba(13, 22, 32, 0));
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
}

.nav {
  display: flex;
  gap: clamp(16px, 3vw, 34px);
  font-size: 15px;
}

.nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: rgba(255, 255, 255, 0.86);
}

.nav a:hover,
.nav a:focus-visible {
  color: #fff;
}

.hero {
  position: relative;
  min-height: 92svh;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #fff;
}

.hero-bg,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-bg {
  background-image: url("https://images.unsplash.com/photo-1558494949-ef010cbdcc31?auto=format&fit=crop&w=2200&q=82");
  background-size: cover;
  background-position: center;
  transform: scale(1.03);
  animation: hero-drift 14s ease-in-out infinite alternate;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(7, 13, 20, 0.9), rgba(7, 13, 20, 0.44) 46%, rgba(7, 13, 20, 0.16)),
    linear-gradient(0deg, rgba(13, 22, 32, 0.38), rgba(13, 22, 32, 0));
}

.hero-content {
  position: relative;
  width: min(760px, calc(100% - 36px));
  margin: 0 0 clamp(54px, 12vh, 110px) clamp(18px, 7vw, 92px);
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(58px, 13vw, 150px);
  line-height: 0.88;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 610px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(18px, 2.2vw, 24px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 6px;
  font-weight: 700;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  background: var(--accent);
  color: #fff;
}

.button.primary:hover,
.button.primary:focus-visible {
  background: var(--accent-dark);
}

.button.secondary {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.42);
}

.button.dark {
  background: var(--night);
}

.section {
  padding: clamp(72px, 10vw, 132px) clamp(18px, 5vw, 72px);
}

.section-inner {
  width: min(1160px, 100%);
  margin: 0 auto;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(30px, 7vw, 92px);
  align-items: start;
}

h2 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(34px, 6vw, 72px);
  line-height: 1.04;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.18;
}

.section-lead,
.text-stack p,
.service-list p,
.visual-copy p {
  color: var(--muted);
  font-size: clamp(17px, 1.7vw, 20px);
}

.section-lead,
.text-stack p {
  margin: 0;
}

.text-stack {
  display: grid;
  gap: 18px;
}

.services {
  background: var(--surface);
}

.service-list {
  margin-top: 48px;
  border-top: 1px solid var(--line);
}

.service-list article {
  display: grid;
  grid-template-columns: 72px minmax(210px, 0.75fr) minmax(0, 1fr);
  gap: clamp(18px, 4vw, 48px);
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}

.service-index {
  color: var(--accent-dark);
  font-weight: 800;
}

.service-list p {
  margin: 0;
}

.visual-band {
  min-height: 68svh;
  display: grid;
  align-items: end;
  padding: clamp(42px, 7vw, 82px) clamp(18px, 5vw, 72px);
  color: #fff;
  background:
    linear-gradient(90deg, rgba(8, 12, 18, 0.82), rgba(8, 12, 18, 0.28)),
    url("https://images.unsplash.com/photo-1497366754035-f200968a6e72?auto=format&fit=crop&w=2200&q=82") center / cover;
  background-attachment: fixed;
}

.visual-copy {
  width: min(620px, 100%);
}

.visual-copy p {
  color: rgba(255, 255, 255, 0.82);
}

.cases {
  background: #e7f0ec;
}

.metrics {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid rgba(11, 111, 97, 0.22);
  border-left: 1px solid rgba(11, 111, 97, 0.22);
}

.metrics div {
  min-height: 152px;
  padding: 24px;
  display: grid;
  align-content: end;
  gap: 8px;
  border-right: 1px solid rgba(11, 111, 97, 0.22);
  border-bottom: 1px solid rgba(11, 111, 97, 0.22);
}

.metrics strong {
  font-size: clamp(22px, 2.5vw, 32px);
  line-height: 1.1;
}

.metrics span {
  color: var(--accent-dark);
  font-weight: 700;
}

.contact {
  background: var(--surface);
}

.contact-inner {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(18px, 5vw, 72px);
  color: rgba(255, 255, 255, 0.74);
  background: var(--night);
  font-size: 14px;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: #fff;
}

.reveal {
  animation: reveal-up 720ms ease both;
}

@keyframes reveal-up {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes hero-drift {
  from {
    transform: scale(1.03) translateX(0);
  }
  to {
    transform: scale(1.08) translateX(-1.2%);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }

  .visual-band {
    background-attachment: scroll;
  }
}

@media (max-width: 820px) {
  .site-header {
    align-items: flex-start;
    gap: 12px;
    padding: 16px 18px;
  }

  .nav {
    gap: 12px;
    font-size: 14px;
  }

  .hero {
    min-height: 86svh;
  }

  .hero-shade {
    background: linear-gradient(90deg, rgba(7, 13, 20, 0.88), rgba(7, 13, 20, 0.44));
  }

  .two-column,
  .service-list article,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .service-list article {
    gap: 10px;
  }

  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-inner {
    display: grid;
  }
}

@media (max-width: 560px) {
  .site-header {
    position: absolute;
  }

  .brand span:last-child {
    display: none;
  }

  .nav {
    width: calc(100% - 52px);
    justify-content: space-between;
  }

  .hero-content {
    width: calc(100% - 36px);
    margin: 0 18px 44px;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .section {
    padding-block: 64px;
  }

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

  .site-footer {
    flex-direction: column;
  }
}