:root {
  color-scheme: dark;
  --ink: #f1f5f9;
  --muted: #94a3b8;
  --paper: #080e18;
  --line: rgba(148, 163, 184, .16);
  --green: #59f0a7;
  --blue: #2b9fff;
  --surface: #111827;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 78% 2%, rgba(43, 159, 255, .12), transparent 34rem),
    radial-gradient(circle at 8% 38%, rgba(89, 240, 167, .07), transparent 28rem),
    var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.skip-link {
  position: fixed;
  top: .75rem;
  left: .75rem;
  z-index: 20;
  padding: .7rem 1rem;
  color: white;
  background: var(--ink);
  border-radius: .4rem;
  transform: translateY(-160%);
}

.skip-link:focus { transform: translateY(0); }

.page-shell {
  width: min(100% - 40px, 1320px);
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 92px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  font-size: .92rem;
  font-weight: 750;
  letter-spacing: -.02em;
  text-decoration: none;
}

.brand svg { width: 34px; height: 34px; }
.brand rect { fill: url("#brand-gradient"); }
.brand path { fill: none; stroke: var(--ink); stroke-width: 2; stroke-linecap: round; }

.site-nav {
  display: flex;
  align-items: center;
  gap: .35rem;
  padding: .3rem;
  background: rgba(17, 24, 39, .65);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.site-nav a {
  padding: .5rem .8rem;
  color: #a8b6ca;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--ink);
  background: rgba(43, 159, 255, .12);
}

.hero {
  min-height: 475px;
  padding: clamp(4.5rem, 7vw, 6.25rem) 0 4.5rem;
}

.eyebrow {
  margin: 0 0 1.5rem;
  color: #7f91a8;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
}

h1, h2, h3, p { text-wrap: pretty; }

h1 {
  max-width: 1200px;
  margin: 0;
  font-size: clamp(3.5rem, 6.7vw, 6rem);
  font-weight: 680;
  line-height: .94;
  letter-spacing: -.072em;
}

.intro {
  max-width: 600px;
  margin: 1.8rem 0 1.8rem;
  color: #a8b6ca;
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  line-height: 1.6;
}

.hero-link {
  display: inline-flex;
  align-items: center;
  gap: .8rem;
  padding-bottom: .45rem;
  border-bottom: 1px solid var(--blue);
  color: #d7ecff;
  font-size: .78rem;
  font-weight: 750;
  letter-spacing: .04em;
  text-decoration: none;
  text-transform: uppercase;
}

.hero-link svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 1.5; transition: transform .2s ease; }
.hero-link:hover svg { transform: translateY(4px); }

.tools-section {
  padding: 4.5rem 0 6.5rem;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  align-items: end;
  gap: 2rem;
  margin-bottom: 2.25rem;
}

.section-heading .eyebrow { align-self: start; margin-top: .8rem; }

.section-heading h2,
.principles h2 {
  margin: 0;
  font-size: clamp(2.25rem, 3.5vw, 3.2rem);
  font-weight: 650;
  line-height: 1.02;
  letter-spacing: -.055em;
}

.section-heading > p:last-child {
  max-width: 300px;
  margin: 0 0 .35rem auto;
  color: #94a3b8;
  line-height: 1.55;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.tool-card {
  position: relative;
  display: flex;
  min-height: 500px;
  padding: 1.6rem;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, .18);
  border-radius: 20px;
  flex-direction: column;
  text-decoration: none;
  transition: transform .25s ease, box-shadow .25s ease;
}

.tool-card:hover {
  z-index: 2;
  transform: translateY(-5px);
  border-color: rgba(77, 181, 255, .5);
  box-shadow: 0 22px 65px rgba(0, 0, 0, .34), 0 0 0 1px rgba(43, 159, 255, .08);
}

.tool-card:focus-visible { outline: 3px solid #e25c3f; outline-offset: 4px; }
.request-card { background: radial-gradient(circle at 25% 10%, rgba(89, 240, 167, .08), transparent 45%), #0b1714; }
.azure-card { background: radial-gradient(circle at 65% 10%, rgba(43, 159, 255, .12), transparent 48%), #111827; }
.email-card { background: radial-gradient(circle at 55% 12%, rgba(167, 139, 250, .1), transparent 48%), #121624; }
.network-card { background: radial-gradient(circle at 55% 12%, rgba(240, 179, 91, .1), transparent 48%), #17150f; }
.request-card:hover { border-color: rgba(89, 240, 167, .55); box-shadow: 0 22px 65px rgba(0,0,0,.34), 0 0 32px rgba(89,240,167,.06); }
.azure-card:hover { border-color: rgba(43, 159, 255, .6); }
.email-card:hover { border-color: rgba(167, 139, 250, .55); box-shadow: 0 22px 65px rgba(0,0,0,.34), 0 0 32px rgba(167,139,250,.06); }
.network-card:hover { border-color: rgba(240,179,91,.55); box-shadow: 0 22px 65px rgba(0,0,0,.34), 0 0 32px rgba(240,179,91,.06); }

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .68rem;
  letter-spacing: .1em;
}

.launch-icon {
  display: grid;
  width: 40px;
  height: 40px;
  border: 1px solid currentColor;
  border-radius: 50%;
  place-items: center;
  transition: transform .25s ease, background-color .25s ease;
}

.launch-icon svg { width: 19px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.tool-card:hover .launch-icon { transform: rotate(45deg); }

.tool-visual {
  position: relative;
  height: 145px;
  margin: 1.6rem 0 .8rem;
}

.request-visual span {
  position: absolute;
  width: 11px;
  height: 11px;
  background: var(--green);
  border: 3px solid #0b1714;
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--green);
}
.request-visual span:nth-child(1) { left: 0; top: 94px; }
.request-visual span:nth-child(2) { left: 34%; top: 29px; }
.request-visual span:nth-child(3) { right: 0; top: 61px; }
.request-visual svg { position: absolute; inset: 34px 0 auto; width: 100%; fill: none; stroke: var(--green); stroke-width: 1.2; stroke-dasharray: 3 5; }

.azure-visual svg { position: absolute; inset: 28px 0 auto; width: 100%; fill: none; stroke: rgba(238,248,255,.6); stroke-width: 1; }
.azure-node { position: absolute; z-index: 1; width: 18px; height: 18px; background: #4db5ff; border: 5px solid #111827; box-shadow: 0 0 0 1px #4db5ff, 0 0 18px rgba(43,159,255,.26); transform: rotate(45deg); }
.azure-node.primary { left: calc(50% - 9px); top: 22px; width: 22px; height: 22px; }
.azure-node.node-a { left: calc(23% - 9px); top: 89px; }
.azure-node.node-b { left: calc(50% - 9px); top: 89px; }
.azure-node.node-c { right: calc(23% - 9px); top: 89px; }

.shield { display: grid; height: 100%; place-items: center; }
.shield svg { width: 88px; fill: rgba(167, 139, 250, .08); stroke: #a78bfa; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.shield path:last-child { fill: none; stroke-width: 3; }
.signal { position: absolute; top: 50%; width: 9px; height: 9px; background: #a78bfa; border-radius: 50%; box-shadow: 0 0 14px rgba(167,139,250,.5); }
.signal-a { left: 12%; }
.signal-b { right: 12%; }
.signal-c { top: 20%; right: 27%; width: 5px; height: 5px; }
.network-visual svg { position:absolute; inset:23px 0 auto; width:100%; fill:none; stroke:#f0b35b; stroke-width:1.5; stroke-dasharray:4 5; }
.network-node { position:absolute; z-index:1; width:17px; height:17px; border:4px solid #17150f; border-radius:5px; background:#f0b35b; box-shadow:0 0 0 1px #f0b35b,0 0 20px rgba(240,179,91,.22); }
.network-node.hub { left:calc(50% - 9px); top:58px; width:21px; height:21px; }
.network-node.branch-a { left:calc(18% - 8px); top:17px; }
.network-node.branch-b { right:calc(18% - 8px); top:17px; }

.card-copy { margin-top: auto; }
.tool-type { margin: 0 0 .75rem; font-size: .68rem; font-weight: 720; letter-spacing: .08em; text-transform: uppercase; opacity: .8; }
.request-card .tool-type, .request-card .tool-number { color: var(--green); }
.azure-card .tool-type, .azure-card .tool-number { color: #4db5ff; }
.email-card .tool-type, .email-card .tool-number { color: #b9a4ff; }
.network-card .tool-type, .network-card .tool-number { color:#f0b35b; }
.card-copy h3 { margin: 0 0 .85rem; font-size: clamp(1.75rem, 2.6vw, 2.35rem); font-weight: 680; line-height: 1.05; letter-spacing: -.045em; }
.card-copy > p:last-child { min-height: 5em; margin: 0; font-size: .93rem; line-height: 1.62; opacity: .76; }
.card-action { display: flex; justify-content: space-between; margin-top: 1.8rem; padding-top: 1rem; border-top: 1px solid currentColor; font-size: .72rem; font-weight: 750; letter-spacing: .04em; text-transform: uppercase; opacity: .85; }
.card-action span { transition: transform .2s ease; }
.tool-card:hover .card-action span { transform: translateX(5px); }

.principles {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  gap: 2rem;
  align-items: start;
  padding: 6rem 0 6.5rem;
  border-top: 1px solid var(--line);
}

.principles > p:last-child { max-width: 420px; margin: .4rem 0 0 auto; color: var(--muted); font-size: 1.05rem; line-height: 1.65; }

.disclaimer {
  max-width: 780px;
  margin: -2rem 0 5rem;
  padding: 1rem 1.2rem;
  color: #a8b6ca;
  background: rgba(17, 24, 39, .62);
  border: 1px solid var(--line);
  border-radius: 12px;
  font-size: .9rem;
  line-height: 1.55;
}

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

footer {
  display: flex;
  justify-content: space-between;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .66rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

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

footer a:hover { color: var(--blue); }

@media (max-width: 900px) {
  .hero { min-height: 470px; }
  .section-heading, .principles { grid-template-columns: 1fr; }
  .section-heading > p:last-child, .principles > p:last-child { margin-left: 0; }
  .disclaimer { margin-top: -1rem; }
  .tool-grid { grid-template-columns: 1fr; }
  .tool-card { min-height: 450px; }
  .tool-visual { max-width: 420px; width: 100%; margin-left: auto; margin-right: auto; }
  .card-copy > p:last-child { min-height: auto; }
}

@media (max-width: 540px) {
  .page-shell { width: min(100% - 24px, 1320px); }
  .site-header { min-height: 72px; }
  .site-nav { gap: 0; }
  .hero { min-height: 435px; padding: 4.25rem 0 3.75rem; }
  h1 { font-size: clamp(3.2rem, 16.4vw, 5rem); }
  .intro { font-size: 1rem; }
  .tools-section { padding: 3.5rem 0 4.5rem; }
  .section-heading { margin-bottom: 2rem; gap: 1rem; }
  .tool-card { min-height: 440px; }
  .tool-visual { height: 125px; margin-top: 1rem; }
  .principles { padding: 4.5rem 0; gap: 1.5rem; }
  footer { gap: 1rem; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}