:root {
  --background: #07111f;
  --foreground: #eef5ff;
  --surface: #0b1828;
  --surface-raised: #102237;
  --surface-light: #f4f7fa;
  --ink: #0b1728;
  --muted-foreground: #9db0c7;
  --border: rgba(168, 197, 226, 0.18);
  --primary: #72e3c1;
  --primary-foreground: #061611;
  --sky: #85c7ff;
  --warm: #ffbf69;
  --font-sans: "Segoe UI Variable", "Segoe UI", Arial, sans-serif;
  --font-mono: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; font-family: var(--font-sans); background: var(--background); }
body { margin: 0; min-width: 320px; background: var(--background); color: var(--foreground); font-size: 1rem; line-height: 1.65; text-rendering: optimizeLegibility; }
a { color: inherit; text-decoration: none; -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--warm); outline-offset: 4px; }
::selection { background: var(--primary); color: var(--primary-foreground); }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; padding: .7rem 1rem; border-radius: .5rem; background: #fff; color: #000; }
.skip-link:focus { top: 1rem; }
.shell { width: min(1160px, calc(100% - 3rem)); margin-inline: auto; }

.site-header { position: relative; z-index: 10; border-bottom: 1px solid var(--border); background: rgba(7, 17, 31, .96); }
.header-inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: .8rem; }
.brand-mark { display: grid; place-items: center; width: 2.55rem; height: 2.55rem; border-radius: .72rem; background: var(--primary); color: var(--primary-foreground); font: 800 1.2rem/1 var(--font-sans); box-shadow: 0 0 0 1px rgba(255,255,255,.15) inset; }
.brand-mark.small { width: 2.2rem; height: 2.2rem; border-radius: .62rem; font-size: 1rem; }
.brand-name { display: grid; line-height: 1.1; }
.brand-name strong { font-size: .98rem; letter-spacing: -.015em; }
.brand-name small { margin-top: .25rem; color: var(--muted-foreground); font: 600 .68rem/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; }
.site-header nav { display: flex; align-items: center; gap: .35rem; }
.site-header nav a { padding: .55rem .9rem; border-radius: 999px; color: #b9c8d9; font-size: .9rem; font-weight: 600; }
.site-header nav a:hover, .site-header nav a[aria-current="page"] { background: rgba(133,199,255,.1); color: #fff; }

.hero { min-height: 650px; display: grid; grid-template-columns: minmax(0,1.08fr) minmax(360px,.92fr); align-items: center; gap: clamp(3rem,7vw,6.5rem); padding-block: clamp(5rem,10vw,8.5rem); }
.eyebrow { display: flex; align-items: center; gap: .65rem; margin: 0 0 1.35rem; color: var(--primary); font: 700 .75rem/1.3 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; }
.eyebrow.muted { color: #7390ad; }
.status-dot { width: .48rem; height: .48rem; border-radius: 999px; background: var(--primary); box-shadow: 0 0 0 5px rgba(114,227,193,.1); }
.hero h1, .policy-hero h1 { margin: 0; max-width: 780px; font-size: clamp(3.1rem,7vw,6.4rem); line-height: .98; letter-spacing: -.065em; font-weight: 720; }
.hero-lede { max-width: 670px; margin: 1.75rem 0 0; color: #b6c6d9; font-size: clamp(1.08rem,2vw,1.28rem); line-height: 1.65; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2.25rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .8rem; min-height: 3.15rem; padding: .7rem 1.25rem; border: 1px solid transparent; border-radius: .8rem; font-weight: 700; transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--primary); color: var(--primary-foreground); }
.button-primary:hover { background: #91ecd0; }
.button-secondary { border-color: var(--border); background: rgba(255,255,255,.035); color: #d8e5f3; }
.button-secondary:hover { border-color: rgba(133,199,255,.45); background: rgba(133,199,255,.08); }
.flow-card { position: relative; padding: 1.1rem; border: 1px solid rgba(133,199,255,.24); border-radius: 1.5rem; background: linear-gradient(145deg,rgba(133,199,255,.08),transparent 45%),rgba(11,24,40,.88); box-shadow: 0 28px 80px rgba(0,0,0,.28); }
.flow-card-topline { display: flex; justify-content: space-between; gap: 1rem; padding: .45rem .55rem 1rem; border-bottom: 1px solid var(--border); color: #c6d4e4; font-size: .82rem; font-weight: 700; }
.mono { font-family: var(--font-mono); }
.flow-card-topline .mono { color: #6f8aa7; font-size: .7rem; letter-spacing: .08em; }
.flow-list { display: grid; margin: 0; padding: 0; list-style: none; }
.flow-list li { display: grid; grid-template-columns: 2.4rem 1fr; gap: .95rem; padding: 1.3rem .55rem; }
.flow-list li + li { border-top: 1px solid rgba(168,197,226,.12); }
.flow-index { display: grid; place-items: center; align-self: start; width: 2.15rem; height: 2.15rem; border: 1px solid rgba(133,199,255,.25); border-radius: .62rem; color: var(--sky); font: 700 .78rem/1 var(--font-mono); }
.flow-index.accent { border-color: var(--primary); background: var(--primary); color: var(--primary-foreground); }
.flow-list strong { display: block; color: #f4f8fc; font-size: .98rem; }
.flow-list p { margin: .35rem 0 0; color: #839bb5; font-size: .88rem; line-height: 1.55; }
.flow-note { display: flex; align-items: center; gap: .65rem; margin: 0; padding: .85rem .95rem; border-radius: .85rem; background: rgba(114,227,193,.08); color: #bcebdc; font-size: .8rem; font-weight: 650; }
.flow-note span { display: grid; place-items: center; flex: 0 0 auto; width: 1.25rem; height: 1.25rem; border-radius: 999px; background: var(--primary); color: var(--primary-foreground); font-size: .72rem; }

.capability-band { padding-block: clamp(5rem,9vw,8rem); background: var(--surface-light); color: var(--ink); }
.section-heading h2, .data-intro h2, .boundary-card h2, .policy-copy h2 { margin: 0; font-size: clamp(2rem,4.2vw,3.45rem); line-height: 1.08; letter-spacing: -.045em; }
.split-heading { display: grid; grid-template-columns: 1.35fr .65fr; gap: 4rem; align-items: end; }
.split-heading > p { margin: 0; color: #536679; }
.capability-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; margin-top: 4rem; overflow: hidden; border: 1px solid #d9e1e8; border-radius: 1.2rem; background: #d9e1e8; }
.capability-card { min-height: 280px; padding: clamp(1.5rem,4vw,2.4rem); background: #fff; }
.capability-number { color: #53708b; font-size: .72rem; letter-spacing: .1em; }
.capability-card h3 { margin: 4.8rem 0 .65rem; font-size: 1.4rem; letter-spacing: -.025em; }
.capability-card p { margin: 0; color: #5d6e7d; font-size: .94rem; }

.data-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(3rem,8vw,7rem); align-items: start; padding-block: clamp(5.5rem,10vw,9rem); }
.data-intro > p:not(.eyebrow) { margin: 1.45rem 0 0; color: #a9bad0; font-size: 1.04rem; }
code { padding: .12rem .35rem; border: 1px solid rgba(133,199,255,.2); border-radius: .35rem; background: rgba(133,199,255,.08); color: #b8ddff; font: .84em/1.45 var(--font-mono); overflow-wrap: anywhere; }
.text-link, .policy-action { display: inline-flex; align-items: center; gap: .6rem; margin-top: 1.5rem; color: var(--primary); font-weight: 750; }
.text-link:hover, .policy-action:hover { text-decoration: underline; text-underline-offset: .3rem; }
.data-facts { margin: 0; border-top: 1px solid var(--border); }
.data-facts div { display: grid; grid-template-columns: 8rem 1fr; gap: 1.2rem; padding: 1.35rem 0; border-bottom: 1px solid var(--border); }
.data-facts dt { color: #718aa5; font: 700 .72rem/1.5 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; }
.data-facts dd { margin: 0; color: #dbe7f4; }
.boundary-section { padding-bottom: clamp(5.5rem,10vw,9rem); }
.boundary-card { display: grid; grid-template-columns: auto 1fr; gap: clamp(2rem,5vw,4rem); align-items: start; padding: clamp(2rem,5vw,4rem); border: 1px solid var(--border); border-radius: 1.5rem; background: linear-gradient(120deg,rgba(133,199,255,.1),rgba(114,227,193,.04)); }
.boundary-mark { display: grid; place-items: center; width: clamp(4.5rem,9vw,7rem); aspect-ratio: 1; border-radius: 1.35rem; background: var(--primary); color: var(--primary-foreground); font-size: clamp(2rem,5vw,3.8rem); font-weight: 800; }
.boundary-card p:last-child { max-width: 760px; margin: 1.2rem 0 0; color: #a8bbcf; }

.policy-main { padding-block: clamp(4.5rem,9vw,8rem); }
.policy-hero { max-width: 900px; }
.policy-hero h1 { font-size: clamp(3.4rem,8vw,6.8rem); }
.policy-lede { max-width: 740px; margin: 1.6rem 0 0; color: #aebfd2; font-size: clamp(1.04rem,2vw,1.22rem); }
.policy-date { display: flex; flex-wrap: wrap; gap: .55rem .9rem; margin-top: 2.2rem; color: #718aa5; font: .75rem/1.5 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; }
.policy-date strong { color: #cdd9e6; }
.policy-summary { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; margin: 4rem 0 5rem; overflow: hidden; border: 1px solid var(--border); border-radius: 1.15rem; background: var(--border); }
.policy-summary > div { display: flex; gap: 1rem; padding: 1.4rem; background: var(--surface); }
.summary-icon { flex: 0 0 auto; color: var(--primary); font: 700 .68rem/1.5 var(--font-mono); }
.policy-summary p { margin: 0; color: #899eb5; font-size: .84rem; }
.policy-summary strong { display: block; margin-bottom: .3rem; color: #e8f1fa; font-size: .92rem; }
.policy-layout { display: grid; grid-template-columns: 220px minmax(0,720px); gap: clamp(3rem,8vw,7rem); align-items: start; }
.policy-toc { position: sticky; top: 2rem; display: grid; gap: .45rem; padding-top: .2rem; }
.policy-toc p { margin: 0 0 .6rem; color: #617b96; font-size: .68rem; letter-spacing: .11em; }
.policy-toc a { padding: .25rem 0; color: #859bb4; font-size: .82rem; }
.policy-toc a:hover { color: var(--primary); }
.policy-copy { min-width: 0; }
.policy-copy section { scroll-margin-top: 2rem; padding: 0 0 3.8rem; }
.policy-copy section + section { padding-top: 3.8rem; border-top: 1px solid var(--border); }
.section-number { display: block; margin-bottom: .8rem; color: var(--primary); font-size: .7rem; letter-spacing: .11em; }
.policy-copy h2 { font-size: clamp(1.7rem,4vw,2.45rem); }
.policy-copy p, .policy-copy li { color: #a9bacd; }
.policy-copy p { margin: 1.25rem 0 0; }
.policy-copy ul, .policy-copy ol { display: grid; gap: .7rem; margin: 1.25rem 0 0; padding-left: 1.4rem; }
.policy-copy li::marker { color: var(--primary); }
.policy-copy a:not(.policy-action) { color: var(--sky); text-decoration: underline; text-decoration-color: rgba(133,199,255,.35); text-underline-offset: .2rem; }
.narrow-policy { max-width: 920px; }
.standalone-copy { margin-top: 5rem; }

.site-footer { border-top: 1px solid var(--border); background: #050d18; }
.footer-grid { display: grid; grid-template-columns: 1fr auto 1fr; gap: 3rem; align-items: start; padding-block: 3rem; }
.footer-note { max-width: 300px; margin: 1rem 0 0; color: #778ca5; font-size: .82rem; }
.footer-links { display: grid; gap: .6rem; color: #b5c6d9; font-size: .86rem; }
.footer-links a:hover { color: var(--primary); }
.footer-meta { margin: 0; color: #60758e; font-size: .78rem; text-align: right; }

@media (max-width: 900px) {
  .hero, .data-section { grid-template-columns: 1fr; }
  .hero { min-height: 0; }
  .flow-card { max-width: 650px; }
  .split-heading, .policy-layout { grid-template-columns: 1fr; }
  .split-heading { gap: 1.5rem; }
  .policy-toc { position: static; grid-template-columns: repeat(3,1fr); padding: 1.2rem; border: 1px solid var(--border); border-radius: 1rem; background: var(--surface); }
  .policy-toc p { grid-column: 1 / -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-meta { grid-column: 1 / -1; text-align: left; }
}

@media (max-width: 680px) {
  .shell { width: min(100% - 2rem,1160px); }
  .header-inner { min-height: 70px; }
  .site-header nav { gap: 0; }
  .site-header nav a { padding-inline: .55rem; font-size: .78rem; }
  .brand-name small { display: none; }
  .hero { gap: 3.5rem; padding-block: 4.5rem 5rem; }
  .hero h1, .policy-hero h1 { letter-spacing: -.055em; }
  .hero-actions, .hero-actions .button { width: 100%; }
  .capability-grid, .policy-summary { grid-template-columns: 1fr; }
  .capability-card { min-height: 0; }
  .capability-card h3 { margin-top: 2.5rem; }
  .data-facts div { grid-template-columns: 1fr; gap: .4rem; }
  .boundary-card, .footer-grid { grid-template-columns: 1fr; }
  .boundary-mark { width: 4.5rem; }
  .footer-meta { grid-column: auto; }
  .policy-toc { grid-template-columns: 1fr 1fr; }
}

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