/* ======================================================
   STERLING IDENTITY INFRASTRUCTURE MODEL™ — VERSION 2
====================================================== */

:root {
  --black: #050405;
  --black-soft: #0b0709;
  --panel: #120d10;
  --cream: #f8f0eb;
  --muted: #c5b7af;
  --gold: #c9a05b;
  --gold-light: #e4c37f;
  --pink: #ef4d9a;
  --pink-soft: #ee86b6;
  --line: rgba(201,160,91,.23);
  --serif: Georgia, "Times New Roman", serif;
  --sans: Arial, Helvetica, sans-serif;
  --max: 1360px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--black);
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--cream);
  background:
    radial-gradient(circle at 12% 8%, rgba(239,77,154,.08), transparent 24%),
    radial-gradient(circle at 88% 14%, rgba(201,160,91,.09), transparent 22%),
    var(--black);
  font-family: var(--sans);
  line-height: 1.7;
}

a { color: inherit; }

button { font: inherit; }

.skip-link {
  position: fixed;
  top: -5rem;
  left: 1rem;
  z-index: 100;
  padding: .8rem 1rem;
  color: var(--black);
  background: var(--cream);
}

.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  min-height: 76px;
  padding: 0 4vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border-bottom: 1px solid var(--line);
  background: rgba(5,4,5,.88);
  backdrop-filter: blur(15px);
}

.brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  line-height: 1.15;
}

.brand-name {
  color: var(--gold-light);
  font-family: var(--serif);
  font-size: 1.08rem;
}

.brand-tagline {
  margin-top: .3rem;
  color: #95877f;
  font-size: .61rem;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.site-header nav {
  display: flex;
  gap: 1.4rem;
}

.site-header nav a {
  color: #ddd0c8;
  text-decoration: none;
  font-size: .69rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.site-header nav a:hover { color: var(--pink-soft); }

.hero {
  position: relative;
  min-height: 88vh;
  overflow: hidden;
  display: grid;
  place-items: center;
  border-bottom: 1px solid var(--line);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(90deg, transparent 0 99px, rgba(255,255,255,.018) 100px),
    repeating-linear-gradient(0deg, transparent 0 99px, rgba(255,255,255,.018) 100px);
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: .18;
}

.hero-glow-one {
  width: 460px;
  height: 460px;
  top: 10%;
  left: 9%;
  background: var(--pink);
}

.hero-glow-two {
  width: 380px;
  height: 380px;
  right: 8%;
  bottom: 8%;
  background: var(--gold);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(1060px, 90vw);
  padding: 6rem 0;
  text-align: center;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--gold-light);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
}

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 400;
}

h1 {
  margin: 0;
  font-size: clamp(3.6rem, 8vw, 8.2rem);
  line-height: .92;
  letter-spacing: -.055em;
  text-wrap: balance;
}

h1 sup {
  color: var(--pink);
  font-family: var(--sans);
  font-size: .12em;
  vertical-align: top;
  letter-spacing: normal;
}

.hero-statement {
  width: min(920px, 100%);
  margin: 2rem auto 0;
  color: #e7dad2;
  font-family: var(--serif);
  font-size: clamp(1.65rem, 3.4vw, 3.3rem);
  line-height: 1.18;
}

.hero-statement strong {
  display: block;
  color: var(--pink-soft);
  font-weight: 400;
}

.hero-copy {
  width: min(740px, 100%);
  margin: 1.5rem auto 0;
  color: var(--muted);
  font-size: 1rem;
}

.hero-actions {
  margin-top: 2.1rem;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: .85rem;
}

.button {
  min-height: 50px;
  padding: .8rem 1.15rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .65rem;
  border: 1px solid var(--gold);
  border-radius: 999px;
  text-decoration: none;
  font-size: .71rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  transition: .22s ease;
}

.button:hover {
  transform: translateY(-2px);
  border-color: var(--gold-light);
}

.button-primary {
  color: #080506;
  background: var(--gold);
}

.button-primary:hover { background: var(--gold-light); }

.button-secondary {
  color: var(--gold-light);
  background: transparent;
}

.shell {
  width: min(var(--max), 92vw);
  margin: auto;
}

.section {
  padding: clamp(5rem, 9vw, 9rem) 0;
  border-bottom: 1px solid var(--line);
}

.split,
.section-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, .58fr);
  gap: clamp(2.5rem, 7vw, 7rem);
  align-items: end;
}

.section h2 {
  margin: 0;
  font-size: clamp(3rem, 6.5vw, 6.7rem);
  line-height: .95;
  letter-spacing: -.05em;
  text-wrap: balance;
}

.editorial-copy p {
  margin: 0 0 1.3rem;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 1.2rem;
}

.editorial-copy strong {
  color: var(--pink-soft);
  font-size: 1.4rem;
  font-weight: 400;
}

.section-header > p:last-child {
  margin: 0;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 1.12rem;
}

.centered {
  display: block;
  width: min(1000px, 100%);
  margin: 0 auto 3.5rem;
  text-align: center;
}

.framework-stage {
  margin-top: 3rem;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 50% 50%, rgba(239,77,154,.08), transparent 40%),
    #030203;
  box-shadow: 0 30px 100px rgba(0,0,0,.35);
}

.framework-open {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  overflow: hidden;
  cursor: zoom-in;
  background: transparent;
}

.framework-open img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform .45s ease, filter .45s ease;
}

.framework-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  background: rgba(3,2,3,.58);
  opacity: 0;
  transition: opacity .25s ease;
}

.framework-overlay strong,
.framework-overlay small {
  display: block;
}

.framework-overlay strong {
  color: var(--gold-light);
  font-family: var(--serif);
  font-size: clamp(1.8rem, 4vw, 4rem);
  font-weight: 400;
}

.framework-overlay small {
  margin-top: .6rem;
  color: var(--cream);
  font-size: .7rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.framework-open:hover img,
.framework-open:focus-visible img {
  transform: scale(1.012);
  filter: brightness(.8);
}

.framework-open:hover .framework-overlay,
.framework-open:focus-visible .framework-overlay {
  opacity: 1;
}

.framework-open:focus-visible {
  outline: 2px solid var(--pink-soft);
  outline-offset: 5px;
}

.framework-tools {
  margin-top: 1rem;
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: .7rem;
}

.tool-button {
  padding: .62rem .9rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--gold-light);
  background: transparent;
  text-decoration: none;
  font-size: .67rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
}

.tool-button:hover {
  border-color: var(--pink);
  color: var(--pink-soft);
}

.layer-grid {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 1rem;
}

.layer-card {
  min-height: 300px;
  padding: 2rem;
  border: 1px solid var(--line);
  background:
    linear-gradient(145deg, rgba(201,160,91,.07), transparent 42%),
    rgba(255,255,255,.02);
}

.layer-card.accent-pink {
  border-color: rgba(239,77,154,.45);
  background:
    linear-gradient(145deg, rgba(239,77,154,.12), transparent 45%),
    rgba(255,255,255,.025);
}

.layer-number {
  color: var(--pink);
  font-family: var(--serif);
  font-size: 2.2rem;
}

.layer-kicker {
  margin: 2.4rem 0 .25rem;
  color: var(--gold-light);
  font-size: .68rem;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.layer-card h3 {
  margin: 0 0 .7rem;
  font-size: clamp(1.9rem, 3.5vw, 3.4rem);
  line-height: 1;
}

.layer-card > p:last-child {
  margin: 0;
  color: var(--muted);
}

.outcome-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0,1fr));
  gap: 1rem;
}

.outcome-grid article {
  min-height: 260px;
  padding: 1.5rem;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.02);
}

.outcome-grid span {
  color: var(--pink);
  font-family: var(--serif);
  font-size: 1.7rem;
}

.outcome-grid h3 {
  margin: 2.6rem 0 .5rem;
  font-size: 1.55rem;
  line-height: 1.05;
}

.outcome-grid p {
  margin: 0;
  color: #b9aaa2;
  font-size: .9rem;
}

.application-grid {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 1rem;
}

.application-grid article {
  min-height: 280px;
  padding: 2rem;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 100% 0%, rgba(239,77,154,.08), transparent 30%),
    rgba(255,255,255,.02);
}

.application-grid span {
  color: var(--gold-light);
  font-size: .67rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.application-grid h3 {
  margin: 4rem 0 0;
  font-size: 2rem;
  line-height: 1.08;
}

.research-grid {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 1rem;
}

.research-grid a {
  min-height: 230px;
  padding: 1.8rem;
  border: 1px solid var(--line);
  text-decoration: none;
  background:
    linear-gradient(140deg, rgba(201,160,91,.08), transparent 40%),
    rgba(255,255,255,.02);
  transition: .22s ease;
}

.research-grid a:hover {
  transform: translateY(-4px);
  border-color: var(--gold-light);
}

.research-grid span {
  color: var(--pink);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.research-grid h3 {
  margin: 3rem 0 0;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  line-height: 1.04;
}

.text-link {
  display: inline-flex;
  gap: .6rem;
  margin-top: 1.7rem;
  color: var(--gold-light);
  text-decoration: none;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.closing {
  padding: clamp(6rem, 11vw, 11rem) 0;
  text-align: center;
}

.closing h2 {
  width: min(1000px, 100%);
  margin: 0 auto 1.5rem;
  font-size: clamp(3.3rem, 7vw, 7.4rem);
  line-height: .93;
  letter-spacing: -.05em;
}

.closing > .shell > p:not(.eyebrow) {
  width: min(760px, 100%);
  margin: 0 auto;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 1.2rem;
}

.framework-dialog {
  width: min(96vw, 1700px);
  height: min(94vh, 1100px);
  padding: 0;
  border: 1px solid rgba(229,196,127,.35);
  color: var(--cream);
  background: #050405;
  overflow: hidden;
}

.framework-dialog::backdrop {
  background: rgba(0,0,0,.9);
  backdrop-filter: blur(6px);
}

.dialog-close {
  position: absolute;
  z-index: 5;
  top: 1rem;
  right: 1rem;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(229,196,127,.3);
  border-radius: 50%;
  color: var(--cream);
  background: rgba(5,4,5,.84);
  font-size: 1.5rem;
  cursor: pointer;
}

.dialog-toolbar {
  position: absolute;
  z-index: 5;
  left: 50%;
  bottom: 1rem;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .5rem;
  border: 1px solid rgba(229,196,127,.25);
  border-radius: 999px;
  background: rgba(5,4,5,.88);
  backdrop-filter: blur(8px);
}

.dialog-toolbar button,
.dialog-toolbar span {
  min-width: 42px;
  min-height: 36px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 999px;
  color: var(--cream);
  background: transparent;
}

.dialog-toolbar button {
  cursor: pointer;
}

.dialog-toolbar button:hover {
  color: var(--pink-soft);
  background: rgba(255,255,255,.06);
}

.zoom-viewport {
  width: 100%;
  height: 100%;
  overflow: auto;
  display: grid;
  place-items: center;
}

.zoom-viewport img {
  max-width: none;
  width: 100%;
  height: auto;
  transform-origin: center center;
  transition: transform .18s ease;
}

footer {
  border-top: 1px solid var(--line);
  background: #030203;
}

.footer-inner {
  width: min(var(--max), 92vw);
  margin: auto;
  padding: 2.5rem 0;
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  color: #91847c;
  font-size: .75rem;
}

.footer-inner a {
  color: var(--gold-light);
  text-decoration: none;
}

@media (max-width: 1050px) {
  .outcome-grid {
    grid-template-columns: repeat(2, minmax(0,1fr));
  }

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

@media (max-width: 820px) {
  .site-header nav { display: none; }

  .split,
  .section-header {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .layer-grid,
  .research-grid,
  .application-grid {
    grid-template-columns: 1fr;
  }

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

  .framework-overlay {
    display: none;
  }

  .framework-tools {
    justify-content: center;
  }
}

@media (max-width: 580px) {
  .hero { min-height: auto; }

  .hero-inner { padding: 5rem 0; }

  .footer-inner {
    display: block;
    text-align: center;
  }

  .framework-dialog {
    width: 100vw;
    height: 100vh;
    max-width: none;
    max-height: none;
  }

  .zoom-viewport img {
    width: 150%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}