:root {
  --ink: #05192d;
  --ink-2: #0b2744;
  --muted: #53697f;
  --bg: #f7f9fc;
  --surface: #ffffff;
  --line: #dbe6ef;
  --pink: #ff4fa3;
  --pink-dark: #d8277d;
  --blue: #19c8ff;
  --blue-soft: #5eb1ff;
  --yellow: #fcce0d;
  --green: #21f47a;
  --shadow: 0 22px 60px rgba(5, 25, 45, 0.12);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  margin: 0;
}

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

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

.container {
  margin: 0 auto;
  max-width: 1160px;
  padding: 0 24px;
}

.site-nav {
  align-items: center;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 28px;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 42px;
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand,
.nav-links a {
  color: var(--pink-dark);
  font-size: 1.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s ease;
}

.brand:hover,
.brand:focus {
  color: var(--blue-soft);
  text-decoration: none;
}

.brand {
  font-size: 2.1rem;
}

.nav-links {
  align-items: center;
  display: flex;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a:hover,
.nav-links a:focus,
.nav-links a.is-active {
  color: var(--blue-soft);
  text-decoration: none;
}

.menu-toggle {
  background: transparent;
  border: 0;
  display: none;
  padding: 8px;
}

.menu-toggle span:not(.sr-only) {
  background: var(--ink);
  display: block;
  height: 2px;
  margin: 5px 0;
  width: 24px;
}

.sr-only {
  clip: rect(0, 0, 0, 0);
  border: 0;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

.hero {
  align-items: center;
  background:
    linear-gradient(110deg, rgba(5, 25, 45, 0.94), rgba(5, 25, 45, 0.55)),
    url("../img/hero-datacamp-style.png") center / cover no-repeat;
  color: #fff;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.75fr);
  min-height: calc(100vh - 72px);
  overflow: hidden;
  padding: 92px max(24px, calc((100vw - 1160px) / 2)) 86px;
  position: relative;
}

.hero:after {
  background: radial-gradient(circle at 84% 18%, rgba(255, 79, 163, 0.28), transparent 24%),
              radial-gradient(circle at 76% 72%, rgba(25, 200, 255, 0.25), transparent 28%);
  content: "";
  inset: 0;
  pointer-events: none;
  position: absolute;
}

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

.eyebrow,
.section-kicker {
  color: var(--pink);
  display: inline-block;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(4.2rem, 7vw, 8.2rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin: 0 0 24px;
  max-width: 880px;
}

.hero-copy {
  color: rgba(255, 255, 255, 0.82);
  font-size: 2rem;
  line-height: 1.55;
  margin: 0;
  max-width: 720px;
}

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

.button {
  border-radius: 999px;
  display: inline-flex;
  font-size: 1.6rem;
  font-weight: 800;
  justify-content: center;
  padding: 14px 24px;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

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

.button-primary {
  background: var(--pink);
  border: 1px solid var(--pink);
  color: var(--ink);
}

.button-primary:hover,
.button-primary:focus {
  background: #ff7dbb;
  border-color: #ff7dbb;
  color: var(--ink);
}

.button-secondary {
  border: 1px solid rgba(255, 255, 255, 0.38);
  color: #fff;
}

.button-secondary:hover,
.button-secondary:focus {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.hero-panel {
  min-height: 430px;
}

.metric-card {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.75);
  border-radius: 8px;
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.2);
  color: var(--ink);
  padding: 22px;
  position: absolute;
  width: 220px;
}

.metric-card span {
  color: var(--muted);
  display: block;
  font-weight: 700;
}

.metric-card strong {
  display: block;
  font-size: 2.3rem;
  line-height: 1.1;
  margin-top: 6px;
}

.card-a {
  left: 8%;
  top: 42px;
}

.card-b {
  right: 2%;
  top: 150px;
}

.card-c {
  bottom: 40px;
  left: 22%;
}

.section {
  padding: 96px 0;
  position: relative;
  scroll-margin-top: 86px;
}

.section:after {
  background: linear-gradient(90deg, transparent, rgba(255, 79, 163, 0.42), rgba(25, 200, 255, 0.42), transparent);
  bottom: -1px;
  content: "";
  height: 1px;
  left: 8%;
  pointer-events: none;
  position: absolute;
  right: 8%;
  z-index: 2;
}

.section:before {
  background: var(--pink);
  bottom: -11px;
  box-shadow: 28px 0 0 var(--blue), 56px 0 0 var(--yellow);
  content: "";
  height: 18px;
  pointer-events: none;
  position: absolute;
  right: 10%;
  transform: skewX(-28deg);
  width: 18px;
  z-index: 3;
}

.hero + main .section:first-child:before {
  left: 10%;
  right: auto;
}

.contact-section:after,
.contact-section:before {
  display: none;
}

.section-dark {
  background: var(--ink);
  color: #fff;
}

.section-dark-soft {
  background:
    radial-gradient(circle at 12% 20%, rgba(255, 79, 163, 0.14), transparent 28%),
    radial-gradient(circle at 92% 70%, rgba(25, 200, 255, 0.13), transparent 30%),
    var(--ink-2);
  color: #fff;
}

.section-heading {
  margin: 0 auto 46px;
  max-width: 760px;
  text-align: center;
}

.section-heading h2,
.intro-copy h2,
.contact-layout h2 {
  font-size: clamp(3.2rem, 5vw, 5.6rem);
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 1.02;
  margin: 0;
}

.section-heading p {
  color: var(--muted);
  font-size: 1.8rem;
  margin: 18px auto 0;
}

.section-dark .section-heading p,
.section-dark-soft .section-heading p,
.contact-layout p {
  color: rgba(255, 255, 255, 0.74);
}

.intro-grid {
  align-items: center;
  display: grid;
  gap: 54px;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
}

.intro-copy p,
.check-list {
  color: var(--muted);
  font-size: 1.75rem;
}

.intro-copy p {
  margin: 22px 0;
}

.check-list {
  display: grid;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.check-list li {
  padding-left: 28px;
  position: relative;
}

.check-list li:before {
  color: var(--pink);
  content: "+";
  font-weight: 900;
  left: 0;
  position: absolute;
}

.insight-board {
  background:
    linear-gradient(30deg, rgba(5, 25, 45, 0.06) 1px, transparent 1px),
    linear-gradient(150deg, rgba(5, 25, 45, 0.06) 1px, transparent 1px),
    #ffffff;
  background-size: 26px 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(3, 1fr);
  padding: 24px;
}

.insight-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(5, 25, 45, 0.08);
  padding: 22px;
}

.insight-card-main {
  grid-column: span 3;
}

.insight-card-small {
  grid-column: span 3;
}

.insight-label {
  color: var(--pink-dark);
  display: block;
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.insight-card strong {
  color: var(--ink);
  display: block;
  font-size: 2.4rem;
  letter-spacing: -0.03em;
  line-height: 1.08;
}

.insight-card p {
  color: var(--muted);
  font-size: 1.55rem;
  margin: 12px 0 0;
}

.insight-chip {
  align-items: center;
  border-radius: 8px;
  color: var(--ink);
  display: flex;
  font-size: 2rem;
  font-weight: 900;
  justify-content: center;
  min-height: 76px;
}

.chip-blue {
  background: var(--blue);
}

.chip-pink {
  background: var(--pink);
}

.chip-yellow {
  background: var(--yellow);
}

.service-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.service-card {
  background: linear-gradient(145deg, rgba(11, 39, 68, 0.98), rgba(5, 25, 45, 0.98));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  min-height: 100%;
  padding: 28px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.service-card:hover {
  border-color: rgba(255, 79, 163, 0.52);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.2);
  transform: translateY(-5px);
}

.service-card h3,
.steps h3,
.faq-grid h3 {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.2;
  margin: 22px 0 12px;
}

.service-card p {
  color: rgba(255, 255, 255, 0.74);
  margin: 0;
}

.iso-icon {
  --iso-color: var(--blue);
  align-items: center;
  display: inline-flex;
  justify-content: center;
  position: relative;
}

.iso-icon:before {
  background:
    linear-gradient(30deg, rgba(5, 25, 45, 0.24) 1px, transparent 1px),
    linear-gradient(150deg, rgba(5, 25, 45, 0.22) 1px, transparent 1px),
    var(--iso-color);
  background-size: 18px 18px, 18px 18px, auto;
  box-shadow: 0 18px 28px rgba(0, 0, 0, 0.18);
  content: "";
  position: absolute;
  transform: rotateX(62deg) rotateZ(45deg);
  z-index: 0;
}

.iso-icon i {
  color: var(--ink);
  position: relative;
  transform: translateY(-8px);
  z-index: 1;
}

.iso-large {
  height: 96px;
  width: 124px;
}

.iso-large:before {
  height: 74px;
  width: 98px;
}

.iso-large i {
  font-size: 4rem;
}

.iso-small {
  flex: 0 0 58px;
  height: 50px;
  width: 58px;
}

.iso-small:before {
  height: 38px;
  width: 44px;
}

.iso-small i {
  font-size: 1.9rem;
  transform: translateY(-4px);
}

.iso-blue {
  --iso-color: #19c8ff;
}

.iso-pink {
  --iso-color: #ff4fa3;
}

.iso-yellow {
  --iso-color: #fcce0d;
}

.iso-green {
  --iso-color: #21f47a;
}

.method-section {
  background:
    linear-gradient(90deg, rgba(5, 25, 45, 0.045) 1px, transparent 1px),
    linear-gradient(180deg, rgba(5, 25, 45, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, #f9fbfd 0%, #eef5fb 100%);
  background-size: 58px 58px, 58px 58px, auto;
  position: relative;
}

.method-section:before {
  background:
    radial-gradient(circle at 18% 28%, rgba(25, 200, 255, 0.18), transparent 18%),
    radial-gradient(circle at 82% 76%, rgba(255, 79, 163, 0.14), transparent 20%);
  content: "";
  inset: 0;
  pointer-events: none;
  position: absolute;
}

.method-section .container {
  position: relative;
  z-index: 1;
}

.steps {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  position: relative;
}

.steps:before {
  background: linear-gradient(90deg, var(--blue), var(--pink), var(--yellow));
  content: "";
  height: 3px;
  left: 8%;
  position: absolute;
  right: 8%;
  top: 49px;
  z-index: 0;
}

.steps article,
.faq-grid article,
.accordion-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(5, 25, 45, 0.05);
}

.steps article {
  background: rgba(255, 255, 255, 0.94);
  padding: 26px;
  position: relative;
  z-index: 1;
}

.steps span {
  align-items: center;
  background: var(--ink);
  border-radius: 999px;
  color: var(--pink);
  display: inline-flex;
  font-size: 1.4rem;
  font-weight: 900;
  height: 46px;
  justify-content: center;
  margin-bottom: 10px;
  width: 46px;
}

.steps p,
.faq-grid p {
  color: var(--muted);
  margin: 0;
}

.accordion {
  display: grid;
  gap: 14px;
  margin: 0 auto;
  max-width: 920px;
}

.accordion-item {
  overflow: hidden;
}

.section-dark-soft .accordion-item {
  background: rgba(255, 255, 255, 0.96);
  border-color: rgba(255, 255, 255, 0.16);
}

.accordion-toggle {
  align-items: center;
  background: transparent;
  border: 0;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  padding: 20px 24px;
  text-align: left;
  width: 100%;
}

.accordion-toggle > span:first-child {
  align-items: center;
  display: flex;
  font-size: 2rem;
  font-weight: 500;
  gap: 16px;
}

.accordion-toggle:hover,
.accordion-toggle:focus {
  background: #f2f7fb;
  outline: none;
}

.plus {
  flex: 0 0 24px;
  height: 24px;
  margin-left: 18px;
  position: relative;
  width: 24px;
}

.plus:before,
.plus:after {
  background: var(--pink);
  border-radius: 2px;
  content: "";
  height: 3px;
  left: 3px;
  position: absolute;
  top: 10px;
  width: 18px;
}

.plus:after {
  transform: rotate(90deg);
  transition: transform 0.2s ease;
}

.accordion-toggle[aria-expanded="true"] .plus:after {
  transform: rotate(0deg);
}

.accordion-content {
  border-top: 1px solid var(--line);
  display: none;
  padding: 0 24px 24px 98px;
}

.accordion-content.is-open {
  display: block;
}

.accordion-content p {
  color: var(--muted);
  font-size: 1.65rem;
  margin: 16px 0 0;
}

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

.faq-section {
  background:
    radial-gradient(circle at 10% 18%, rgba(255, 79, 163, 0.18), transparent 24%),
    radial-gradient(circle at 88% 24%, rgba(25, 200, 255, 0.16), transparent 26%),
    linear-gradient(180deg, #ffffff 0%, #f4f8fc 100%);
  position: relative;
}

.faq-section:before {
  background:
    linear-gradient(30deg, rgba(5, 25, 45, 0.045) 1px, transparent 1px),
    linear-gradient(150deg, rgba(5, 25, 45, 0.04) 1px, transparent 1px);
  background-size: 34px 34px;
  content: "";
  inset: 0;
  pointer-events: none;
  position: absolute;
}

.faq-section .container {
  position: relative;
  z-index: 1;
}

.faq-grid article {
  background: rgba(255, 255, 255, 0.92);
  overflow: hidden;
  padding: 28px;
  position: relative;
}

.faq-grid article:before {
  background: var(--pink);
  content: "";
  height: 5px;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
}

.faq-grid article:nth-child(2):before {
  background: var(--blue);
}

.faq-grid article:nth-child(3):before {
  background: var(--yellow);
}

.faq-grid h3 {
  color: var(--ink);
}

.contact-section {
  background: linear-gradient(135deg, var(--ink), var(--ink-2));
  color: #fff;
}

.contact-layout {
  display: grid;
  gap: 52px;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1fr);
}

.contact-form {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  display: grid;
  gap: 10px;
  padding: 28px;
}

.contact-form label {
  color: rgba(255, 255, 255, 0.86);
  font-size: 1.35rem;
  font-weight: 700;
}

.contact-form input,
.contact-form textarea {
  background: #fff;
  border: 2px solid transparent;
  border-radius: 8px;
  color: var(--ink);
  font: inherit;
  margin-bottom: 8px;
  outline: none;
  padding: 13px 15px;
  width: 100%;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--pink);
  box-shadow: 0 0 0 4px rgba(255, 79, 163, 0.18);
}

.hidden-field {
  display: none;
}

.contact-mail {
  color: rgba(255, 255, 255, 0.78);
  display: inline-block;
  font-weight: 700;
  margin-top: 4px;
  text-align: center;
}

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

.site-footer .container {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
}

.site-footer strong {
  color: var(--ink);
}

@media (max-width: 1080px) {
  .hero,
  .intro-grid,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    display: none;
  }

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

  .insight-board {
    max-width: 620px;
  }
}

@media (max-width: 760px) {
  .site-nav {
    padding: 0 18px;
  }

  .menu-toggle {
    display: block;
  }

  .nav-links {
    background: #fff;
    border-bottom: 1px solid var(--line);
    display: none;
    left: 0;
    padding: 14px 18px 22px;
    position: absolute;
    right: 0;
    top: 72px;
  }

  .nav-links.is-open {
    display: grid;
    gap: 10px;
  }

  .brand {
    font-size: 1.8rem;
  }

  .hero {
    min-height: auto;
    padding: 86px 24px 72px;
  }

  .hero h1 {
    font-size: 4rem;
  }

  .hero-copy {
    font-size: 1.75rem;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .section {
    padding: 70px 0;
  }

  .section:before {
    right: 24px;
    transform: skewX(-24deg) scale(0.82);
  }

  .section:after {
    left: 24px;
    right: 24px;
  }

  .service-grid,
  .steps,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .steps:before {
    display: none;
  }

  .insight-board {
    grid-template-columns: 1fr;
    padding: 18px;
  }

  .insight-card-main,
  .insight-card-small {
    grid-column: auto;
  }

  .accordion-toggle {
    padding: 18px;
  }

  .accordion-toggle > span:first-child {
    font-size: 1.75rem;
    gap: 12px;
  }

  .accordion-content {
    padding: 0 18px 20px;
  }

  .iso-small {
    flex-basis: 50px;
    height: 44px;
    width: 50px;
  }

  .iso-small:before {
    height: 34px;
    width: 39px;
  }

  .iso-small i {
    font-size: 1.65rem;
  }

  .contact-form {
    padding: 20px;
  }
}