:root {
  --ink: #0b0f12;
  --panel: #12181d;
  --line: #d7dde1;
  --muted: #65717b;
  --paper: #f6f7f4;
  --white: #ffffff;
  --steel: #5d788a;
  --amber: #c88c3a;
  --copper: #9e6231;
  --green: #546e57;
  --sea: #1f5867;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(11, 15, 18, 0.92);
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(10px);
}

.brand img {
  display: block;
  width: 176px;
  height: 54px;
  object-fit: contain;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0;
}

.nav a {
  color: rgba(255, 255, 255, 0.82);
}

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

.hero {
  position: relative;
  min-height: 88vh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  align-items: end;
  gap: clamp(22px, 4vw, 52px);
  padding: clamp(56px, 9vw, 110px) clamp(18px, 4vw, 56px) 34px;
  color: var(--white);
  overflow: hidden;
  background: #0b0f12;
}

.hero-media {
  position: absolute;
  inset: 0;
  opacity: 0.72;
}

.hero-photo {
  width: 100%;
  height: 100%;
  background:
    linear-gradient(90deg, rgba(5, 7, 8, 0.96), rgba(8, 12, 15, 0.75) 42%, rgba(8, 12, 15, 0.14) 78%),
    linear-gradient(180deg, rgba(5, 7, 8, 0.16), rgba(5, 7, 8, 0.62)),
    url("assets/oil-tanker-hero.png") center / cover no-repeat;
  transform: scale(1.02);
}

.hero-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(105deg, rgba(255, 255, 255, 0.06) 0 1px, transparent 1px 62px),
    linear-gradient(160deg, rgba(200, 140, 58, 0.26), transparent 34%);
  mix-blend-mode: screen;
  pointer-events: none;
}

.hero-copy,
.hero-panel {
  position: relative;
  z-index: 1;
}

.hero-copy {
  max-width: 820px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--amber);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  max-width: 760px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3rem, 8vw, 6.8rem);
  line-height: 0.94;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  max-width: 820px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.08rem;
  letter-spacing: 0;
}

.hero-copy p:not(.eyebrow) {
  max-width: 660px;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button,
.contact-form button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-weight: 700;
  cursor: pointer;
}

.button.primary,
.contact-form button {
  background: var(--amber);
  color: #111;
}

.button.secondary {
  border-color: rgba(255, 255, 255, 0.44);
  color: var(--white);
}

.hero-panel {
  align-self: end;
  display: grid;
  gap: 8px;
  padding: 24px;
  background: rgba(11, 15, 18, 0.76);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.42);
}

.hero-panel strong {
  color: var(--white);
}

.hero-panel span {
  margin-bottom: 10px;
  color: rgba(255, 255, 255, 0.72);
}

.section {
  padding: clamp(56px, 8vw, 104px) clamp(18px, 4vw, 56px);
}

.split {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(280px, 1fr);
  gap: clamp(24px, 6vw, 80px);
}

.text-stack {
  max-width: 760px;
  color: #26343b;
  font-size: 1.08rem;
}

.values-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  padding-top: 0;
  background: linear-gradient(90deg, transparent, transparent) padding-box;
}

.values-band article {
  min-height: 260px;
  padding: clamp(22px, 4vw, 38px);
  background: var(--panel);
  color: var(--white);
}

.values-band article:nth-child(2) {
  background: #21303a;
}

.values-band article:nth-child(3) {
  background: var(--green);
}

.values-band p {
  color: rgba(255, 255, 255, 0.78);
}

.section-heading {
  margin-bottom: 32px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  border: 0;
}

.service-card {
  position: relative;
  min-height: 292px;
  display: flex;
  flex-direction: column;
  padding: 28px;
  overflow: hidden;
  border: 1px solid rgba(12, 19, 23, 0.13);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(232, 236, 231, 0.68)),
    radial-gradient(circle at 88% 12%, rgba(31, 88, 103, 0.16), transparent 34%);
  box-shadow: 0 16px 38px rgba(20, 31, 36, 0.08);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--amber), var(--sea));
}

.service-card::after {
  content: "";
  position: absolute;
  right: -42px;
  bottom: -42px;
  width: 124px;
  height: 124px;
  border: 1px solid rgba(31, 88, 103, 0.16);
  border-radius: 50%;
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(200, 140, 58, 0.45);
  box-shadow: 0 26px 60px rgba(20, 31, 36, 0.16);
}

.service-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 28px;
}

.service-number {
  color: var(--steel);
  font-weight: 700;
}

.service-icon {
  position: relative;
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  border: 1px solid rgba(31, 88, 103, 0.2);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.72);
}

.service-icon::before,
.service-icon::after {
  content: "";
  position: absolute;
  display: block;
}

.service-icon.wave::before {
  left: 10px;
  right: 10px;
  bottom: 13px;
  height: 9px;
  border-top: 3px solid var(--sea);
  border-radius: 50%;
}

.service-icon.wave::after {
  left: 13px;
  top: 15px;
  width: 19px;
  height: 7px;
  border-bottom: 3px solid var(--amber);
  border-radius: 50%;
}

.service-icon.gauge::before {
  left: 10px;
  top: 13px;
  width: 24px;
  height: 18px;
  border: 3px solid var(--sea);
  border-bottom: 0;
  border-radius: 24px 24px 0 0;
}

.service-icon.gauge::after {
  left: 22px;
  top: 20px;
  width: 3px;
  height: 12px;
  background: var(--amber);
  transform: rotate(38deg);
  transform-origin: bottom center;
}

.service-icon.sample::before {
  left: 18px;
  top: 9px;
  width: 8px;
  height: 25px;
  border: 3px solid var(--sea);
  border-top: 0;
  border-radius: 0 0 8px 8px;
}

.service-icon.sample::after {
  left: 16px;
  top: 27px;
  width: 12px;
  height: 5px;
  background: var(--amber);
  border-radius: 50%;
}

.service-icon.anchor::before {
  left: 20px;
  top: 9px;
  width: 4px;
  height: 24px;
  background: var(--sea);
}

.service-icon.anchor::after {
  left: 12px;
  top: 23px;
  width: 20px;
  height: 13px;
  border: 3px solid var(--amber);
  border-top: 0;
  border-radius: 0 0 18px 18px;
}

.service-icon.claim::before {
  left: 12px;
  top: 10px;
  width: 20px;
  height: 25px;
  border: 3px solid var(--sea);
  border-radius: 3px;
}

.service-icon.claim::after {
  left: 17px;
  top: 18px;
  width: 13px;
  height: 3px;
  background: var(--amber);
  box-shadow: 0 7px 0 var(--amber);
}

.service-icon.report::before {
  left: 11px;
  top: 25px;
  width: 5px;
  height: 10px;
  background: var(--sea);
  box-shadow: 9px -7px 0 var(--amber), 18px -15px 0 var(--sea);
}

.service-icon.report::after {
  left: 10px;
  bottom: 10px;
  width: 25px;
  height: 3px;
  background: rgba(31, 88, 103, 0.35);
}

.service-card h3,
.service-card p,
.service-card small {
  position: relative;
  z-index: 1;
}

.service-card h3 {
  min-height: 52px;
}

.service-card small {
  margin-top: auto;
  padding-top: 18px;
  color: var(--copper);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0;
}

.service-grid p,
.coverage-grid p,
.quality p,
.clients p {
  color: #40505a;
}

.coverage {
  background: #e8ece7;
}

.coverage-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.coverage-grid article {
  position: relative;
  padding: 26px;
  border: 1px solid #c9d0c8;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.48);
  overflow: hidden;
}

.coverage-grid article::before {
  content: "";
  display: block;
  width: 34px;
  height: 3px;
  margin-bottom: 18px;
  background: var(--amber);
}

.quality {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(300px, 1fr);
  gap: clamp(28px, 6vw, 80px);
  background: var(--ink);
  color: var(--white);
}

.quality p {
  color: rgba(255, 255, 255, 0.72);
}

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

.roadmap li {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 58px;
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.roadmap span {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 32px;
  border-radius: 50%;
  background: var(--amber);
  color: #111;
  font-weight: 700;
}

.clients {
  text-align: center;
}

.clients h2 {
  margin-right: auto;
  margin-left: auto;
}

.client-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}

.client-row span {
  min-width: 132px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--white);
  color: #25313a;
  font-weight: 700;
}

.footer {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(300px, 1fr);
  gap: clamp(28px, 6vw, 80px);
  padding: clamp(42px, 7vw, 80px) clamp(18px, 4vw, 56px);
  background: #050607;
  color: var(--white);
}

.footer img {
  width: min(360px, 100%);
  height: auto;
  margin-bottom: 18px;
}

.footer p {
  max-width: 420px;
  color: rgba(255, 255, 255, 0.72);
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.contact-form label {
  display: grid;
  gap: 7px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.9rem;
}

.contact-form label:nth-child(4) {
  grid-column: 1 / -1;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 4px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  font: inherit;
}

.contact-form button {
  justify-self: start;
}

@media (max-width: 860px) {
  .site-header {
    position: relative;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero,
  .split,
  .quality,
  .footer {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .values-band,
  .service-grid,
  .coverage-grid {
    grid-template-columns: 1fr;
  }

  .service-grid article,
  .values-band article {
    min-height: auto;
  }
}

@media (max-width: 560px) {
  .brand img {
    width: 148px;
    height: 46px;
  }

  .nav {
    gap: 10px 14px;
    font-size: 0.78rem;
  }

  .hero-actions,
  .contact-form {
    grid-template-columns: 1fr;
  }

  .button,
  .contact-form button {
    width: 100%;
  }

  .contact-form label {
    grid-column: 1 / -1;
  }
}