:root {
  --security-bg: #04111d;
  --security-panel: #071b2b;
  --security-panel-strong: #061522;
  --security-text: #f5fbff;
  --security-muted: #a8bfd0;
  --security-cyan: #49d8ec;
  --security-green: #34d399;
  --security-gold: #f2c563;
  --security-border: rgba(104, 211, 230, .24);
  --security-grid: rgba(73, 216, 236, .055);
}

html[data-theme="light"] {
  --security-bg: #edf6fa;
  --security-panel: #ffffff;
  --security-panel-strong: #f7fbfd;
  --security-text: #071522;
  --security-muted: #4d6475;
  --security-cyan: #08718a;
  --security-green: #087a5a;
  --security-gold: #996200;
  --security-border: rgba(7, 95, 124, .22);
  --security-grid: rgba(7, 95, 124, .06);
}

* { box-sizing: border-box; }
html { background: var(--security-bg); scroll-behavior: smooth; }
body[data-atlas-security-console] {
  min-height: 100vh;
  margin: 0;
  color: var(--security-text);
  background:
    linear-gradient(var(--security-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--security-grid) 1px, transparent 1px),
    radial-gradient(circle at 50% 0, rgba(36, 179, 202, .16), transparent 38rem),
    var(--security-bg);
  background-size: 64px 64px, 64px 64px, auto, auto;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

body[data-atlas-security-console] a { color: inherit; }
body[data-atlas-security-console] button { font: inherit; }

.security-desktop-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 12px max(24px, calc((100vw - 1280px) / 2));
  border-bottom: 1px solid var(--security-border);
  background: color-mix(in srgb, var(--security-bg) 90%, transparent);
  backdrop-filter: blur(18px);
}

.security-desktop-nav__brand { display: flex; align-items: center; gap: 12px; color: var(--security-text); text-decoration: none; }
.security-desktop-nav__brand img { width: 42px; height: 42px; object-fit: contain; }
.security-desktop-nav__brand span,
.security-desktop-nav__brand small,
.security-desktop-nav nav a,
.security-kicker,
.security-proof-field__label,
.security-proof-field__hint,
.security-proof-node,
.security-proof-detail__index,
.security-grade-band span,
.security-grade-band small,
.security-sequence span,
.security-review-note span,
.security-footer {
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.security-desktop-nav__brand span { font-weight: 900; }
.security-desktop-nav__brand small { color: var(--security-muted); font-size: 11px; }
.security-desktop-nav nav { display: flex; align-items: center; gap: 8px; }
.security-desktop-nav nav a { min-height: 44px; display: inline-flex; align-items: center; padding: 0 14px; color: var(--security-muted); font-size: 12px; text-decoration: none; }
.security-desktop-nav nav a:hover,
.security-desktop-nav nav a:focus-visible { color: var(--security-cyan); }

.security-console { width: min(1280px, calc(100% - 40px)); margin: 0 auto; padding: 48px 0 132px; }
.security-hero { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(430px, .96fr); align-items: center; gap: clamp(32px, 6vw, 88px); min-height: min(760px, calc(100vh - 76px)); padding: 42px 0 58px; }
.security-kicker { margin: 0 0 14px; color: var(--security-cyan); font-size: 12px; font-weight: 800; }
.security-hero h1 { max-width: 760px; margin: 0; font-size: clamp(44px, 6vw, 82px); line-height: 1.02; letter-spacing: 0; }
.security-hero__copy > p:not(.security-kicker) { max-width: 690px; margin: 24px 0 0; color: var(--security-muted); font-size: clamp(17px, 1.65vw, 22px); }
.security-hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.security-action { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; padding: 0 22px; border: 1px solid var(--security-border); border-radius: 6px; color: var(--security-cyan); font-family: "JetBrains Mono", monospace; font-size: 12px; font-weight: 900; letter-spacing: .08em; text-align: center; text-decoration: none; text-transform: uppercase; transition: transform 180ms ease, border-color 180ms ease, background 180ms ease; }
.security-action--primary { border-color: transparent; background: var(--security-cyan); color: #02121b; }
.security-action:hover,
.security-action:focus-visible { transform: translateY(-2px); border-color: var(--security-cyan); }

.security-proof-field { min-width: 0; }
.security-proof-field__label { margin: 0 0 12px; color: var(--security-cyan); font-size: 12px; }
.security-proof-field__stage { position: relative; aspect-ratio: 1; min-height: 430px; overflow: hidden; border: 1px solid var(--security-border); border-radius: 8px; background: linear-gradient(var(--security-grid) 1px, transparent 1px), linear-gradient(90deg, var(--security-grid) 1px, transparent 1px), color-mix(in srgb, var(--security-panel) 88%, transparent); background-size: 44px 44px; isolation: isolate; }
.security-proof-field__stage::before,
.security-proof-field__stage::after { content: ""; position: absolute; inset: 50% auto auto 50%; background: var(--security-border); transform: translate(-50%, -50%); z-index: -1; }
.security-proof-field__stage::before { width: 76%; height: 1px; }
.security-proof-field__stage::after { width: 1px; height: 76%; }
.security-proof-field__ring { position: absolute; left: 50%; top: 50%; border: 1px solid color-mix(in srgb, var(--security-cyan) 46%, transparent); border-radius: 50%; transform: translate(-50%, -50%); }
.security-proof-field__ring--one { width: 66%; aspect-ratio: 1; }
.security-proof-field__ring--two { width: 88%; aspect-ratio: 1; border-color: color-mix(in srgb, var(--security-green) 32%, transparent); }
.security-proof-field__axis { position: absolute; left: 50%; top: 50%; width: 78%; aspect-ratio: 1.8; border: 1px solid color-mix(in srgb, var(--security-gold) 42%, transparent); border-radius: 50%; transform: translate(-50%, -50%) rotate(-18deg); }
.security-proof-field__core { position: absolute; left: 50%; top: 50%; width: 36%; aspect-ratio: 1; display: grid; place-items: center; padding: 12px; border: 1px solid var(--security-border); border-radius: 8px; background: color-mix(in srgb, var(--security-panel-strong) 94%, transparent); box-shadow: 0 18px 48px rgba(0, 0, 0, .28); transform: translate(-50%, -50%); text-align: center; }
.security-proof-field__core img { width: 70%; aspect-ratio: 1; object-fit: contain; border-radius: 6px; }
.security-proof-field__core strong { font-family: "JetBrains Mono", monospace; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.security-proof-field__core span { color: var(--security-green); font: 800 10px/1.2 "JetBrains Mono", monospace; letter-spacing: .08em; text-transform: uppercase; }
.security-proof-node { position: absolute; width: 112px; min-height: 82px; display: grid; place-content: center; gap: 2px; border: 1px solid var(--security-border); border-radius: 8px; background: var(--security-panel-strong); color: var(--security-muted); cursor: pointer; transition: transform 180ms ease, border-color 180ms ease, background 180ms ease; }
.security-proof-node strong { color: var(--security-text); font-size: 22px; }
.security-proof-node span { font-size: 10px; }
.security-proof-node--tls { left: 8%; top: 17%; }
.security-proof-node--headers { right: 7%; top: 22%; }
.security-proof-node--payments { right: 18%; bottom: 10%; }
.security-proof-node[aria-pressed="true"] { border-color: var(--security-green); background: color-mix(in srgb, var(--security-green) 13%, var(--security-panel-strong)); color: var(--security-green); transform: translateY(-3px); }
.security-proof-node:hover,
.security-proof-node:focus-visible { border-color: var(--security-cyan); transform: translateY(-3px); }
.security-proof-field__hint { margin: 12px 0 0; color: var(--security-muted); font-size: 10px; text-align: center; }

.security-proof-detail { display: grid; grid-template-columns: 170px minmax(0, 1fr) auto; align-items: center; gap: 26px; padding: 26px 28px; border-top: 1px solid var(--security-cyan); border-bottom: 1px solid var(--security-border); background: color-mix(in srgb, var(--security-panel) 86%, transparent); }
.security-proof-detail__index { color: var(--security-cyan); font-size: 11px; }
.security-proof-detail h2 { margin: 0; font-size: clamp(22px, 2.2vw, 34px); letter-spacing: 0; }
.security-proof-detail p { margin: 6px 0 0; color: var(--security-muted); }
.security-proof-detail > a { min-height: 44px; display: inline-flex; align-items: center; color: var(--security-cyan); font-family: "JetBrains Mono", monospace; font-size: 11px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }

.security-grade-band { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 56px; border: 1px solid var(--security-border); border-radius: 8px; background: var(--security-panel-strong); }
.security-grade-band article { min-width: 0; padding: 26px; }
.security-grade-band article + article { border-left: 1px solid var(--security-border); }
.security-grade-band span { color: var(--security-muted); font-size: 10px; }
.security-grade-band strong { display: block; margin-top: 10px; color: var(--security-green); font-size: clamp(32px, 4vw, 56px); line-height: 1; }
.security-grade-band p { margin: 12px 0 0; font-weight: 800; }
.security-grade-band small { display: block; margin-top: 4px; color: var(--security-muted); font-size: 9px; }

.security-chapter { padding: 96px 0 18px; }
.security-chapter > header { max-width: 760px; }
.security-chapter h2,
.security-retest h2 { margin: 0; font-size: clamp(34px, 5vw, 64px); line-height: 1.04; letter-spacing: 0; }
.security-chapter header > p:not(.security-kicker),
.security-retest > div > p:not(.security-kicker) { color: var(--security-muted); font-size: 18px; }
.security-control-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin-top: 38px; border: 1px solid var(--security-border); background: var(--security-border); }
.security-control-grid article { min-width: 0; padding: 28px 24px; background: var(--security-panel); }
.security-control-grid article > span { color: var(--security-green); font: 800 10px/1.2 "JetBrains Mono", monospace; letter-spacing: .08em; text-transform: uppercase; }
.security-control-grid h3 { margin: 16px 0 8px; font-size: 22px; }
.security-control-grid p { margin: 0; color: var(--security-muted); }

.security-chapter--split { display: grid; grid-template-columns: .85fr 1.15fr; gap: 70px; align-items: start; }
.security-inline-link { min-height: 44px; display: inline-flex; align-items: center; margin-top: 16px; color: var(--security-cyan); font-family: "JetBrains Mono", monospace; font-size: 11px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.security-sequence { border-top: 1px solid var(--security-cyan); }
.security-sequence > div { display: grid; grid-template-columns: 48px 1fr; gap: 6px 18px; padding: 22px 0; border-bottom: 1px solid var(--security-border); }
.security-sequence span { grid-row: span 2; color: var(--security-cyan); font-size: 12px; }
.security-sequence strong { font-size: 20px; }
.security-sequence p { margin: 0; color: var(--security-muted); }

.security-chapter--boundary { text-align: center; }
.security-chapter--boundary > header { margin: 0 auto; }
.security-boundary-strip { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin: 32px 0 24px; }
.security-boundary-strip span { min-height: 42px; display: inline-flex; align-items: center; padding: 0 15px; border: 1px solid var(--security-border); border-radius: 999px; background: var(--security-panel-strong); color: var(--security-muted); font-size: 13px; }

.security-retest { display: grid; grid-template-columns: .8fr 1.2fr; gap: 72px; margin-top: 92px; padding: 54px; border: 1px solid var(--security-border); border-radius: 8px; background: var(--security-panel-strong); }
.security-retest nav { border-top: 1px solid var(--security-border); }
.security-retest nav a { min-height: 66px; display: flex; align-items: center; justify-content: space-between; gap: 16px; border-bottom: 1px solid var(--security-border); color: var(--security-text); text-decoration: none; }
.security-retest nav a span { color: var(--security-muted); }
.security-retest nav a strong { color: var(--security-cyan); font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.security-retest nav a:hover span,
.security-retest nav a:focus-visible span { color: var(--security-text); }

.security-review-note { margin-top: 32px; padding: 24px 26px; border-left: 3px solid var(--security-gold); background: color-mix(in srgb, var(--security-gold) 7%, var(--security-panel)); }
.security-review-note strong { color: var(--security-gold); }
.security-review-note p { margin: 8px 0; color: var(--security-muted); }
.security-review-note span { color: var(--security-muted); font-size: 9px; }
.security-footer { display: flex; align-items: center; justify-content: space-between; gap: 22px; margin-top: 60px; padding-top: 24px; border-top: 1px solid var(--security-border); color: var(--security-muted); font-size: 10px; }
.security-footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
.security-footer a { min-height: 36px; display: inline-flex; align-items: center; }

@media (max-width: 900px) {
  .security-desktop-nav { display: none; }
  .security-console { width: min(100% - 24px, 720px); padding-top: calc(84px + env(safe-area-inset-top)); }
  .security-hero { grid-template-columns: 1fr; min-height: 0; gap: 44px; padding-top: 34px; }
  .security-hero h1 { font-size: clamp(42px, 10vw, 66px); }
  .security-proof-detail { grid-template-columns: 1fr; gap: 8px; }
  .security-proof-detail > a { margin-top: 8px; }
  .security-control-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .security-chapter--split,
  .security-retest { grid-template-columns: 1fr; gap: 34px; }
}

@media (max-width: 560px) {
  body[data-atlas-security-console] { background-size: 44px 44px, 44px 44px, auto, auto; }
  .security-console { width: calc(100% - 24px); padding-bottom: calc(128px + env(safe-area-inset-bottom)); }
  .security-hero { gap: 32px; padding-top: 16px; }
  .security-hero h1 { font-size: clamp(39px, 11vw, 52px); }
  .security-hero__copy > p:not(.security-kicker) { margin-top: 18px; font-size: 17px; }
  .security-hero__actions { display: grid; grid-template-columns: 1fr; }
  .security-action { width: 100%; }
  .security-proof-field__stage { min-height: 0; }
  .security-proof-node { width: 82px; min-height: 66px; }
  .security-proof-node strong { font-size: 18px; }
  .security-proof-node--tls { left: 5%; top: 14%; }
  .security-proof-node--headers { right: 4%; top: 18%; }
  .security-proof-node--payments { right: 12%; bottom: 8%; }
  .security-proof-field__core { width: 38%; padding: 8px; }
  .security-proof-field__core strong { font-size: 9px; }
  .security-proof-detail { padding: 22px 18px; }
  .security-grade-band { grid-template-columns: 1fr; margin-top: 38px; }
  .security-grade-band article + article { border-left: 0; border-top: 1px solid var(--security-border); }
  .security-grade-band article { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 2px 16px; padding: 20px; }
  .security-grade-band article span,
  .security-grade-band article p,
  .security-grade-band article small { grid-column: 1; }
  .security-grade-band article strong { grid-column: 2; grid-row: 1 / span 3; margin: 0; font-size: 38px; }
  .security-chapter { padding-top: 72px; }
  .security-chapter h2,
  .security-retest h2 { font-size: 38px; }
  .security-control-grid { grid-template-columns: 1fr; }
  .security-retest { margin-top: 72px; padding: 28px 20px; }
  .security-retest nav a { align-items: flex-start; flex-direction: column; justify-content: center; gap: 3px; padding: 12px 0; }
  .security-boundary-strip { justify-content: flex-start; }
  .security-footer { align-items: flex-start; flex-direction: column; }
}

@media (min-width: 1600px) {
  .security-console { width: min(1500px, calc(100% - 96px)); }
  .security-hero { grid-template-columns: minmax(0, 1fr) 600px; min-height: 820px; }
  .security-proof-field__stage { min-height: 600px; }
  .security-control-grid article { min-height: 230px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .security-action,
  .security-proof-node { transition: none; }
}