:root {
  --color-ink: #072628;
  --color-teal: #0d4d52;
  --color-gold: #d4af37;
  --color-cream: #f4e9c6;
  --color-black: #0f1416;
  --color-charcoal: #232a2e;
  --color-slate: #586368;
  --color-silver: #a1a7ad;
  --color-mist: #e6e9ec;
  --color-success: #3bbe8a;
  --color-error: #d96c5f;
  --font-heading: "Montserrat", "Inter", Arial, sans-serif;
  --font-body: "Manrope", "Inter", Arial, sans-serif;
  --radius-sm: 4px;
  --radius-md: 8px;
  --container-max: 1440px;
  --section-space: clamp(72px, 10vw, 150px);
  --page-padding: clamp(20px, 5vw, 92px);
  --header-height: 92px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 70% 10%, rgba(13, 77, 82, 0.52), transparent 35%),
    linear-gradient(135deg, #061617 0%, var(--color-black) 48%, #071e20 100%);
  color: var(--color-mist);
  font-family: var(--font-body);
  line-height: 1.65;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.site-shell {
  min-height: 100vh;
  overflow: hidden;
  position: relative;
}

.site-shell::before {
  background:
    linear-gradient(rgba(212, 175, 55, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 175, 55, 0.08) 1px, transparent 1px);
  background-size: 72px 72px;
  content: "";
  inset: 0;
  opacity: 0.09;
  pointer-events: none;
  position: fixed;
  z-index: 0;
}

.site-header,
main,
.site-footer {
  position: relative;
  z-index: 1;
}

.site-header {
  align-items: center;
  backdrop-filter: blur(20px);
  background: rgba(5, 18, 20, 0.74);
  border-bottom: 1px solid rgba(212, 175, 55, 0.16);
  display: flex;
  height: var(--header-height);
  justify-content: space-between;
  left: 0;
  padding: 0 var(--page-padding);
  position: sticky;
  right: 0;
  top: 0;
  z-index: 20;
}

.brand {
  align-items: center;
  display: inline-flex;
  gap: 14px;
  min-width: max-content;
}

.brand-mark {
  align-items: center;
  background:
    linear-gradient(135deg, rgba(244, 233, 198, 0.96), rgba(212, 175, 55, 0.9)),
    var(--color-gold);
  border: 1px solid rgba(244, 233, 198, 0.5);
  color: #091819;
  display: inline-flex;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 800;
  height: 42px;
  justify-content: center;
  letter-spacing: 0.08em;
  width: 42px;
}

.brand-text {
  color: var(--color-cream);
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.main-nav {
  align-items: center;
  display: flex;
  gap: clamp(18px, 2vw, 34px);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.main-nav a {
  color: rgba(230, 233, 236, 0.82);
  transition: color 180ms ease, border-color 180ms ease, background 180ms ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-gold);
}

.nav-cta {
  border: 1px solid rgba(212, 175, 55, 0.75);
  color: var(--color-cream) !important;
  padding: 15px 22px;
}

.nav-cta:hover {
  background: rgba(212, 175, 55, 0.1);
}

.menu-toggle {
  background: transparent;
  border: 1px solid rgba(212, 175, 55, 0.35);
  display: none;
  height: 44px;
  padding: 0 10px;
  width: 48px;
}

.menu-toggle span {
  background: var(--color-gold);
  display: block;
  height: 2px;
  margin: 7px 0;
  width: 100%;
}

.section,
.hero,
.page-hero {
  padding-left: var(--page-padding);
  padding-right: var(--page-padding);
}

.container {
  margin: 0 auto;
  max-width: var(--container-max);
  width: 100%;
}

.hero {
  min-height: calc(100vh - var(--header-height));
  padding-bottom: 64px;
  padding-top: clamp(64px, 7vw, 118px);
  position: relative;
}

.hero::before {
  background:
    linear-gradient(90deg, rgba(6, 17, 18, 0.96) 0%, rgba(6, 17, 18, 0.73) 45%, rgba(6, 17, 18, 0.18) 100%),
    url("assets/images/aios-hero-abstract-ai.jpg") center right / cover no-repeat;
  content: "";
  inset: 0;
  opacity: 0.95;
  position: absolute;
}

.hero::after {
  background: radial-gradient(circle at 74% 46%, rgba(212, 175, 55, 0.24), transparent 28%);
  content: "";
  inset: 0;
  pointer-events: none;
  position: absolute;
}

.hero .container {
  align-items: center;
  display: grid;
  gap: 56px;
  grid-template-columns: minmax(0, 0.95fr) minmax(340px, 0.8fr);
  position: relative;
  z-index: 1;
}

.hero-copy {
  max-width: 780px;
}

.eyebrow {
  color: var(--color-gold);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  margin: 0 0 22px;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  letter-spacing: 0;
  line-height: 1.06;
  margin: 0;
}

h1 {
  font-size: clamp(43px, 5.3vw, 82px);
  font-weight: 700;
  max-width: 880px;
  text-transform: uppercase;
}

h2 {
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 700;
}

h3 {
  font-size: clamp(22px, 2vw, 30px);
}

.gold {
  color: var(--color-gold);
}

.lead {
  color: rgba(230, 233, 236, 0.82);
  font-size: clamp(17px, 1.3vw, 21px);
  line-height: 1.72;
  margin: 28px 0 0;
  max-width: 680px;
}

.hero-line,
.gold-line {
  background: var(--color-gold);
  display: block;
  height: 2px;
  margin: 32px 0;
  width: 76px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 36px;
}

.button {
  align-items: center;
  border: 1px solid rgba(212, 175, 55, 0.82);
  display: inline-flex;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  gap: 14px;
  justify-content: center;
  letter-spacing: 0.04em;
  min-height: 54px;
  padding: 15px 24px;
  text-transform: uppercase;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

.button span {
  font-size: 20px;
  line-height: 1;
  transition: transform 180ms ease;
}

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

.button:hover span {
  transform: translateX(3px);
}

.button.primary {
  background: linear-gradient(135deg, var(--color-cream), var(--color-gold));
  color: #0a1718;
}

.button.secondary {
  background: rgba(5, 18, 20, 0.28);
  color: var(--color-cream);
}

.proof-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 52px;
}

.proof-item,
.card,
.module-card,
.service-card,
.faq-item,
.form-panel,
.metric-card {
  background: linear-gradient(145deg, rgba(13, 77, 82, 0.52), rgba(15, 20, 22, 0.86));
  border: 1px solid rgba(212, 175, 55, 0.18);
  box-shadow: 0 20px 80px rgba(0, 0, 0, 0.28);
}

.proof-item {
  min-height: 132px;
  padding: 20px;
}

.icon {
  align-items: center;
  border: 1px solid rgba(212, 175, 55, 0.45);
  color: var(--color-gold);
  display: inline-flex;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  height: 36px;
  justify-content: center;
  margin-bottom: 18px;
  width: 36px;
}

.proof-item strong,
.card strong,
.module-card strong,
.metric-card strong {
  color: var(--color-cream);
  display: block;
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.proof-item p,
.card p,
.module-card p,
.metric-card p,
.service-card p {
  color: rgba(230, 233, 236, 0.72);
  margin: 10px 0 0;
}

.hero-visual {
  align-self: stretch;
  border: 1px solid rgba(212, 175, 55, 0.28);
  display: grid;
  min-height: 500px;
  place-items: center;
  position: relative;
}

.hero-visual::before {
  background:
    radial-gradient(circle, rgba(212, 175, 55, 0.16), transparent 58%),
    linear-gradient(135deg, rgba(212, 175, 55, 0.18), transparent 42%);
  content: "";
  inset: 0;
  position: absolute;
}

.architecture-preview {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding: 26px;
  position: relative;
  width: min(480px, 100%);
  z-index: 1;
}

.architecture-preview div {
  background: rgba(6, 17, 18, 0.72);
  border: 1px solid rgba(212, 175, 55, 0.28);
  color: var(--color-cream);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 22px 18px;
  text-transform: uppercase;
}

.section {
  padding-bottom: var(--section-space);
  padding-top: var(--section-space);
}

.section.alt {
  background: linear-gradient(135deg, rgba(7, 38, 40, 0.84), rgba(15, 20, 22, 0.64));
  border-bottom: 1px solid rgba(212, 175, 55, 0.12);
  border-top: 1px solid rgba(212, 175, 55, 0.12);
}

.section-header {
  align-items: end;
  display: grid;
  gap: 30px;
  grid-template-columns: minmax(0, 0.85fr) minmax(260px, 0.45fr);
  margin-bottom: 48px;
}

.section-header p {
  color: rgba(230, 233, 236, 0.74);
  font-size: 18px;
  margin: 0;
}

.grid {
  display: grid;
  gap: 22px;
}

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

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.service-card,
.module-card,
.metric-card {
  padding: 28px;
}

.service-card {
  min-height: 310px;
  position: relative;
}

.service-card::before {
  background: var(--color-gold);
  content: "";
  height: 2px;
  left: 28px;
  position: absolute;
  top: 0;
  width: 70px;
}

.service-card h3 {
  color: var(--color-cream);
  margin-bottom: 18px;
}

.card-link {
  color: var(--color-gold);
  display: inline-flex;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  gap: 10px;
  letter-spacing: 0.08em;
  margin-top: 24px;
  text-transform: uppercase;
}

.split {
  align-items: center;
  display: grid;
  gap: clamp(38px, 6vw, 86px);
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.85fr);
}

.split.reverse {
  grid-template-columns: minmax(320px, 0.85fr) minmax(0, 0.95fr);
}

.image-frame {
  border: 1px solid rgba(212, 175, 55, 0.22);
  min-height: 420px;
  overflow: hidden;
  position: relative;
}

.image-frame img {
  filter: saturate(0.82) contrast(1.08);
  height: 100%;
  object-fit: cover;
  position: absolute;
  width: 100%;
}

.image-frame::after {
  background:
    linear-gradient(135deg, rgba(7, 38, 40, 0.5), rgba(15, 20, 22, 0.1)),
    radial-gradient(circle at 74% 36%, rgba(212, 175, 55, 0.2), transparent 34%);
  content: "";
  inset: 0;
  position: absolute;
}

.list {
  display: grid;
  gap: 16px;
  margin: 30px 0 0;
  padding: 0;
}

.list li {
  border-top: 1px solid rgba(212, 175, 55, 0.16);
  color: rgba(230, 233, 236, 0.8);
  list-style: none;
  padding-top: 16px;
}

.list strong {
  color: var(--color-cream);
}

.timeline {
  counter-reset: step;
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.timeline-item {
  border-top: 2px solid rgba(212, 175, 55, 0.55);
  padding-top: 18px;
  position: relative;
}

.timeline-item::before {
  color: var(--color-gold);
  content: "0" counter(step);
  counter-increment: step;
  display: block;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 18px;
}

.timeline-item h3 {
  color: var(--color-cream);
  font-size: 18px;
}

.timeline-item p {
  color: rgba(230, 233, 236, 0.68);
  font-size: 14px;
}

.page-hero {
  background:
    linear-gradient(90deg, rgba(6, 17, 18, 0.94), rgba(6, 17, 18, 0.68)),
    url("assets/images/aios-data-flow.jpg") center / cover no-repeat;
  border-bottom: 1px solid rgba(212, 175, 55, 0.14);
  padding-bottom: clamp(86px, 10vw, 140px);
  padding-top: clamp(74px, 10vw, 140px);
}

.page-hero .container {
  max-width: 1120px;
}

.page-hero h1 {
  max-width: 980px;
}

.breadcrumb {
  color: var(--color-gold);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: 26px;
  text-transform: uppercase;
}

.contact-grid {
  display: grid;
  gap: 34px;
  grid-template-columns: minmax(0, 0.85fr) minmax(340px, 0.7fr);
}

.form-panel {
  padding: 30px;
}

.form-grid {
  display: grid;
  gap: 18px;
}

.field label {
  color: var(--color-cream);
  display: block;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.field input,
.field select,
.field textarea {
  background: rgba(15, 20, 22, 0.8);
  border: 1px solid rgba(212, 175, 55, 0.22);
  color: var(--color-mist);
  min-height: 52px;
  padding: 13px 14px;
  width: 100%;
}

.field textarea {
  min-height: 136px;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
  outline: none;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  padding: 24px 26px;
}

.faq-item h3 {
  color: var(--color-cream);
  font-size: 19px;
}

.faq-item p {
  color: rgba(230, 233, 236, 0.74);
  margin-bottom: 0;
}

.legal-box {
  background: rgba(244, 233, 198, 0.06);
  border: 1px solid rgba(212, 175, 55, 0.2);
  padding: 32px;
}

.legal-box h3 {
  color: var(--color-cream);
  font-size: 20px;
  margin-top: 34px;
}

.legal-box a {
  color: var(--color-gold);
}

.legal-box p {
  color: rgba(230, 233, 236, 0.76);
}

.legal-note {
  border-top: 1px solid rgba(212, 175, 55, 0.16);
  font-size: 14px;
  margin-top: 34px;
  padding-top: 20px;
}

.site-footer {
  background: #071314;
  border-top: 1px solid rgba(212, 175, 55, 0.18);
  padding: 0 var(--page-padding) 54px;
}

.footer-cta {
  align-items: center;
  border-bottom: 1px solid rgba(212, 175, 55, 0.16);
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1fr) auto;
  margin: 0 auto;
  max-width: var(--container-max);
  padding: 70px 0;
}

.footer-cta h2 {
  max-width: 820px;
}

.footer-cta .eyebrow {
  grid-column: 1 / -1;
  margin-bottom: -10px;
}

.footer-grid {
  display: grid;
  gap: 36px;
  grid-template-columns: minmax(280px, 1.3fr) repeat(3, minmax(160px, 0.5fr));
  margin: 0 auto;
  max-width: var(--container-max);
  padding-top: 48px;
}

.footer-grid h3 {
  color: var(--color-cream);
  font-size: 14px;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
  text-transform: uppercase;
}

.footer-grid a {
  color: rgba(230, 233, 236, 0.72);
  display: block;
  margin: 10px 0;
}

.footer-grid p {
  color: rgba(230, 233, 236, 0.64);
  max-width: 420px;
}

.footer-brand {
  margin-bottom: 22px;
}

@media (max-width: 1120px) {
  .main-nav {
    background: rgba(5, 18, 20, 0.97);
    border-left: 1px solid rgba(212, 175, 55, 0.18);
    bottom: 0;
    display: none;
    flex-direction: column;
    justify-content: center;
    padding: 32px;
    position: fixed;
    right: 0;
    top: var(--header-height);
    width: min(420px, 100%);
  }

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

  .menu-toggle {
    display: block;
  }

  .hero .container,
  .split,
  .split.reverse,
  .contact-grid,
  .section-header {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 360px;
  }

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

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

  .footer-cta,
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 680px) {
  :root {
    --header-height: 76px;
  }

  .brand-text {
    font-size: 14px;
  }

  .brand-mark {
    height: 36px;
    width: 36px;
  }

  .hero {
    min-height: auto;
  }

  .hero::before {
    background:
      linear-gradient(180deg, rgba(6, 17, 18, 0.96) 0%, rgba(6, 17, 18, 0.86) 60%, rgba(6, 17, 18, 0.72) 100%),
      url("assets/images/aios-hero-abstract-ai.jpg") center / cover no-repeat;
  }

  .button-row,
  .button {
    width: 100%;
  }

  .proof-grid,
  .grid.two,
  .grid.three,
  .grid.four,
  .timeline,
  .footer-cta,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    display: none;
  }

  .image-frame {
    min-height: 300px;
  }

  .site-footer {
    padding-bottom: 36px;
  }
}