:root {
  --ink: #071018;
  --surface: #0b1721;
  --surface-2: #102431;
  --paper: #eaf2f0;
  --muted: #a4b6b5;
  --line: rgba(214, 240, 234, 0.17);
  --signal: #9de6d2;
  --signal-bright: #d3fff1;
  --amber: #f5b35a;
  --violet: #9f8dff;
  --danger: #ff9d94;
  --content: min(1160px, calc(100% - 48px));
  --space-section: clamp(3.75rem, 7vw, 5.5rem);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--paper);
  background: var(--ink);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--ink); }
body { margin: 0; min-width: 320px; overflow-x: clip; background: radial-gradient(circle at 82% -10%, rgba(36, 112, 118, .25), transparent 28rem), var(--ink); color: var(--paper); line-height: 1.55; }
a { color: inherit; }
button, input, select, textarea { font: inherit; }
img, svg { max-width: 100%; }
p, li, td, th, figcaption { overflow-wrap: anywhere; }

.skip { position: absolute; left: -10000px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.skip:focus { left: 1rem; top: 1rem; width: auto; height: auto; z-index: 999; padding: .75rem 1rem; color: var(--ink); background: var(--signal-bright); border-radius: .45rem; }

.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--line); background: rgba(7,16,24,.9); backdrop-filter: blur(16px); }
.nav { width: var(--content); margin: 0 auto; min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.brand { text-decoration: none; font-size: .86rem; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.brand span { color: var(--signal); }
.nav-links { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: .2rem 1rem; font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.nav-links a { display: inline-flex; align-items: center; min-height: 44px; padding: .45rem .2rem; text-decoration: none; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--signal-bright); }

.hero { width: var(--content); margin: 0 auto; padding: clamp(4rem, 10vw, 8rem) 0 4rem; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(16rem, .8fr); align-items: end; gap: 3rem; }
.kicker { margin: 0 0 1rem; color: var(--signal); font-size: .7rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
h1 { max-width: 14ch; margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(3rem, 7vw, 6.5rem); line-height: .93; font-weight: 500; letter-spacing: -.055em; }
.hero .lede { max-width: 61ch; margin: 1.5rem 0 0; font-size: clamp(1rem, 1.6vw, 1.2rem); color: #c6d5d4; }
.hero-aside { align-self: stretch; display: flex; flex-direction: column; justify-content: flex-end; padding: 1.5rem; border: 1px solid var(--line); background: linear-gradient(145deg, rgba(157,230,210,.10), rgba(157,230,210,0) 55%), rgba(16,36,49,.65); }
.hero-aside p { margin: 0; color: var(--muted); font-size: .88rem; }
.hero-aside strong { display: block; margin: .35rem 0 1rem; color: var(--paper); font-size: 1.1rem; }

.guardian-hero { width: var(--content); margin: 0 auto; padding: clamp(4rem, 10vw, 8rem) 0 4rem; display: grid; grid-template-columns: minmax(0, 1fr) minmax(17rem, .82fr); align-items: center; gap: clamp(2rem, 7vw, 6rem); }
.guardian-hero h1 { max-width: 9ch; }
.guardian-hero__lede { max-width: 45ch; margin: 1.5rem 0 0; color: #c6d5d4; font-size: clamp(1.08rem, 1.8vw, 1.35rem); }
.guardian-hero__art { margin: 0; border: 1px solid rgba(245,179,90,.45); padding: .7rem; background: linear-gradient(145deg, rgba(245,179,90,.12), rgba(16,36,49,.28)); box-shadow: 0 0 4rem rgba(245,179,90,.1); }
.guardian-hero__art img { display: block; width: 100%; aspect-ratio: 1; object-fit: cover; }
.guardian-hero__art figcaption { padding: .85rem .15rem .15rem; color: var(--muted); font-size: .64rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.guardian-reading { max-width: 54rem; }
.guardian-reading blockquote { max-width: 17ch; margin: 0; color: var(--paper); font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.5rem, 6vw, 5rem); line-height: .98; letter-spacing: -.06em; }
.guardian-prose { margin-top: 2.5rem; padding-left: clamp(1.2rem, 3vw, 2rem); border-left: 2px solid var(--amber); }
.guardian-prose strong { color: var(--paper); }
.guardian-record a { color: var(--signal-bright); }

.tools-hero .lede { max-width: 54ch; }
.tool-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(20rem, .9fr); gap: 1rem; align-items: start; }
.tool-form, .tool-output { padding: clamp(1.25rem, 3vw, 2rem); border: 1px solid var(--line); background: rgba(16,36,49,.55); }
.tool-form { display: grid; gap: 1.05rem; }
.field-row { display: grid; gap: .45rem; }
.field-row label { color: var(--paper); font-size: .76rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.field-row label span { color: var(--amber); }
.field-row input, .field-row textarea, .field-row select { width: 100%; border: 1px solid var(--line); border-radius: 0; padding: .8rem .9rem; color: var(--paper); background: rgba(7,16,24,.72); line-height: 1.5; }
.field-row textarea { resize: vertical; min-height: 6rem; }
.field-row select { min-height: 2.9rem; }
.field-row input:focus, .field-row textarea:focus, .field-row select:focus { border-color: var(--signal); outline: 2px solid rgba(157,230,210,.18); outline-offset: 2px; }
.field-row input::placeholder, .field-row textarea::placeholder { color: #718382; }
.tool-two-up { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.tool-privacy { margin: 0; color: var(--muted); font-size: .78rem; }
.tool-output { position: sticky; top: 5.5rem; min-height: 100%; }
.tool-output__head { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; margin-bottom: 1.25rem; }
.tool-output__head .button { flex: 0 0 auto; }
.tool-output pre { min-height: 24rem; max-height: 42rem; margin: 0; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; padding: 1rem; border: 1px solid var(--line); background: rgba(7,16,24,.72); color: #c6d5d4; font: .78rem/1.65 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.button:disabled { cursor: not-allowed; opacity: .48; transform: none; }

main > section { padding: var(--space-section) 0; border-top: 1px solid var(--line); }
.section-inner { width: var(--content); margin: 0 auto; }
.section-heading { max-width: 58rem; margin-bottom: 2rem; }
h2 { margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(2rem, 4vw, 3.7rem); line-height: 1.02; font-weight: 500; letter-spacing: -.04em; }
h3 { margin: 0; font-size: 1.1rem; letter-spacing: -.02em; }
.section-heading p, .prose p { max-width: 70ch; color: var(--muted); }
.prose p + p { margin-top: 1.1rem; }

.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { min-height: 100%; padding: 1.4rem; border: 1px solid var(--line); background: rgba(16,36,49,.55); }
.card:hover { border-color: rgba(157,230,210,.46); background: rgba(16,36,49,.85); }
.card a { text-decoration: none; }
.card p { color: var(--muted); font-size: .92rem; }
.card small { display: block; margin-top: 1rem; color: var(--signal); font-size: .69rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.card .meta { display: flex; align-items: center; justify-content: space-between; gap: .75rem; margin-bottom: 1.4rem; }

.chip { display: inline-flex; align-items: center; gap: .4rem; padding: .28rem .55rem; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: .65rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.chip::before { width: .4rem; height: .4rem; border-radius: 50%; background: var(--muted); content: ""; }
.chip[data-state="live"]::before, .chip[data-state="verified"]::before { background: var(--signal); }
.chip[data-state="building"]::before, .chip[data-state="testing"]::before { background: var(--amber); }
.chip[data-state="conceptual"]::before { background: var(--violet); }
.chip[data-state="archived"]::before { background: #69797a; }

.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: .8rem 1.1rem; border: 1px solid var(--signal); color: var(--ink); background: var(--signal); text-decoration: none; font-size: .74rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; transition: transform .2s, background .2s; }
.button:hover { background: var(--signal-bright); transform: translateY(-2px); }
.button--ghost { color: var(--signal-bright); background: transparent; }
.button--ghost:hover { background: rgba(157,230,210,.1); }
.action-row { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.75rem; }

.table-wrap { max-width: 100%; overflow-x: auto; overscroll-behavior-inline: contain; border: 1px solid var(--line); scrollbar-color: var(--signal) var(--surface); }
table { width: 100%; min-width: 640px; border-collapse: collapse; background: rgba(16,36,49,.35); }
th, td { padding: 1rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--signal-bright); font-size: .67rem; letter-spacing: .11em; text-transform: uppercase; }
td { color: var(--muted); font-size: .88rem; }
td strong { color: var(--paper); }

.notice { padding: 1.1rem 1.2rem; border-left: 3px solid var(--amber); background: rgba(245,179,90,.1); color: #ebd5b8; }
.notice strong { color: #ffe4bd; }

.artifact-template { margin: 0; overflow-x: auto; white-space: pre-wrap; padding: clamp(1.25rem, 3vw, 2rem); border: 1px solid var(--line); background: rgba(7,16,24,.78); color: #c6d5d4; font: .82rem/1.65 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

.learning-visual { position: relative; margin: 0 0 2.5rem; padding: .55rem; border: 1px solid var(--line); background: rgba(16,36,49,.55); }
.learning-visual img { display: block; width: 100%; height: auto; }
.learning-visual figcaption { display: flex; justify-content: space-between; gap: 1rem; padding: .8rem .25rem .2rem; color: var(--muted); font-size: .67rem; letter-spacing: .08em; text-transform: uppercase; }
.learning-visual figcaption strong { color: var(--signal); }
.learning-visual--semantic { width: var(--content); margin: clamp(2rem, 5vw, 4rem) auto 0; }

.page-visual { width: var(--content); margin: 0 auto clamp(2.5rem, 6vw, 5rem); padding: .55rem; border: 1px solid var(--line); background: rgba(16,36,49,.55); box-shadow: 0 2rem 6rem rgba(0,0,0,.2); }
.page-visual img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.page-visual figcaption { display: flex; justify-content: space-between; gap: 1rem; padding: .8rem .25rem .2rem; color: var(--muted); font-size: .67rem; letter-spacing: .08em; text-transform: uppercase; }
.page-visual figcaption strong { color: var(--signal); }

.flow { counter-reset: step; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.flow article { min-height: 15rem; padding: 1.4rem; background: var(--surface); }
.flow article::before { display: block; margin-bottom: 2.5rem; color: var(--signal); font-size: .7rem; font-weight: 800; letter-spacing: .15em; counter-increment: step; content: "0" counter(step); }
.flow p { color: var(--muted); font-size: .9rem; }

.footer { width: var(--content); margin: 0 auto; padding: 2.5rem 0 3rem; color: var(--muted); font-size: .75rem; }
.footer-grid { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 1.5rem; border-top: 1px solid var(--line); padding-top: 1.75rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: .4rem 1rem; }
.footer a { text-decoration: none; }
.footer a:hover { color: var(--signal); }

@media (max-width: 1024px) and (min-width: 781px) {
  :root { --content: min(100% - 40px, 1160px); }
  .hero { grid-template-columns: minmax(0, 1.1fr) minmax(15rem, .9fr); gap: 2rem; }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flow article { min-height: 12rem; }
  .tool-grid { grid-template-columns: minmax(0, 1fr) minmax(18rem, .85fr); }
}

@media (max-width: 780px) {
  :root { --content: min(100% - 32px, 1160px); --space-section: 3.75rem; }
  .site-header { backdrop-filter: blur(20px); }
  .nav { width: 100%; min-height: 0; padding: .7rem 1rem 0; align-items: stretch; flex-direction: column; gap: .35rem; }
  .brand { align-self: flex-start; min-height: 40px; display: inline-flex; align-items: center; }
  .nav-links { width: calc(100% + 2rem); margin-inline: -1rem; padding: 0 1rem .6rem; flex-wrap: nowrap; justify-content: flex-start; gap: .35rem; overflow-x: auto; overscroll-behavior-inline: contain; scroll-padding-inline: 1rem; scrollbar-width: none; }
  .nav-links::-webkit-scrollbar { display: none; }
  .nav-links a { flex: 0 0 auto; min-height: 42px; padding: .55rem .45rem; }
  .hero, .guardian-hero { grid-template-columns: 1fr; gap: 1.75rem; padding: clamp(3.25rem, 12vw, 4.5rem) 0 3.25rem; }
  h1 { font-size: clamp(2.8rem, 13vw, 4.75rem); line-height: .96; }
  h2 { font-size: clamp(2rem, 9vw, 3.25rem); line-height: 1.04; }
  .hero-aside { padding: 1.25rem; }
  .guardian-hero__art { max-width: 34rem; }
  .tool-grid { grid-template-columns: 1fr; }
  .tool-output { position: static; }
  .grid-2, .grid-3, .flow { grid-template-columns: 1fr; }
  .flow article { min-height: auto; }
  .flow article::before { margin-bottom: 1.25rem; }
  .tool-two-up { grid-template-columns: 1fr; }
  .tool-output__head { flex-direction: column; }
  .page-visual, .learning-visual { padding: .4rem; }
  .page-visual figcaption, .learning-visual figcaption { display: grid; gap: .25rem; padding: .7rem .2rem .15rem; line-height: 1.45; }
  .footer-grid { align-items: flex-start; flex-direction: column; }
  .footer-links { gap: .25rem .9rem; }
}

@media (max-width: 480px) {
  :root { --content: min(100% - 24px, 1160px); --space-section: 3.25rem; }
  .nav { padding-inline: .75rem; }
  .nav-links { width: calc(100% + 1.5rem); margin-inline: -.75rem; padding-inline: .75rem; scroll-padding-inline: .75rem; }
  .hero, .guardian-hero { padding-top: 2.75rem; padding-bottom: 2.75rem; }
  h1 { font-size: clamp(2.6rem, 14vw, 3.75rem); letter-spacing: -.045em; }
  .kicker { margin-bottom: .75rem; line-height: 1.45; }
  .section-heading { margin-bottom: 1.5rem; }
  .card, .flow article { padding: 1.2rem; }
  .card .meta { align-items: flex-start; flex-direction: column; margin-bottom: 1.1rem; }
  .action-row { display: grid; grid-template-columns: 1fr; }
  .action-row .button { width: 100%; }
  .button { min-height: 48px; }
  .tool-form, .tool-output { padding: 1rem; }
  .tool-output pre, .artifact-template { padding: 1rem; font-size: .76rem; }
  .notice { padding: 1rem; }
  th, td { padding: .8rem; }
  .footer { padding-bottom: max(2.5rem, env(safe-area-inset-bottom)); }
}

@media (hover: none) and (pointer: coarse) {
  .card:hover { border-color: var(--line); background: rgba(16,36,49,.55); }
  .button:hover { transform: none; }
}

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