/* Zero Medium — site styles */

:root {
  --bg: #0f1218;
  --bg-2: #131720;
  --surface: rgba(255, 255, 255, 0.03);
  --surface-2: rgba(255, 255, 255, 0.055);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #f4f6f8;
  --muted: #8b93a1;
  --dim: #5d6573;
  --accent: #5eead4;
  --accent-ink: #062a25;
  --accent-soft: rgba(94, 234, 212, 0.12);
  --danger: #fb7185;

  --font-display: "Archivo", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, Consolas, monospace;

  --radius: 18px;
  --radius-sm: 10px;
  --container: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  --header-h: 76px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 1rem/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: var(--accent-ink); }

a { color: inherit; text-decoration: none; }
img, svg { display: block; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-variation-settings: "wdth" 125;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.accent { color: var(--accent); }

.kicker, .eyebrow {
  font: 500 .78rem/1 var(--font-display);
  font-variation-settings: "wdth" 125;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1.4rem;
}
.kicker { color: var(--accent); }
.eyebrow i { font-style: normal; color: var(--accent); padding: 0 .3em; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .95rem 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font: 600 .95rem/1 var(--font-body);
  cursor: pointer;
  transition: transform .2s var(--ease), background .2s, border-color .2s, box-shadow .2s;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: transform .2s var(--ease); }
.btn:hover svg { transform: translateX(3px); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 0 0 0 rgba(94, 234, 212, 0);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 30px -8px rgba(94, 234, 212, .55); }

.btn-ghost { border-color: var(--border-strong); color: var(--text); }
.btn-ghost:hover { background: var(--surface-2); border-color: rgba(255,255,255,.3); }

.btn-sm { padding: .65rem 1.05rem; font-size: .85rem; }

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: var(--header-h);
  transition: background .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(15, 18, 24, .72);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--border);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.brand { display: inline-flex; align-items: center; gap: .75rem; flex-shrink: 0; }
.brand-mark { width: 40px; height: 40px; color: var(--text); transition: transform .6s var(--ease); }
.brand:hover .brand-mark { transform: rotate(90deg); }
.brand-word {
  font: 800 .82rem/1.02 var(--font-display);
  font-variation-settings: "wdth" 125;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.nav { display: flex; gap: .25rem; margin-left: auto; }
.nav a {
  padding: .5rem .85rem;
  white-space: nowrap;
  border-radius: 999px;
  font-size: .9rem;
  color: var(--muted);
  transition: color .2s, background .2s;
}
.nav a:hover, .nav a.active { color: var(--text); background: var(--surface-2); }

.nav-group { position: relative; }
.nav-parent { display: inline-flex; align-items: center; gap: .3rem; }
.caret { width: 10px; height: 10px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; transition: transform .25s var(--ease); }
.nav-group:hover .caret, .nav-group:focus-within .caret { transform: rotate(180deg); }
.nav-group:has(.active) > .nav-parent { color: var(--text); background: var(--surface-2); }
.nav-sub {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: .5rem;
  display: flex;
  flex-direction: column;
  min-width: 190px;
  padding: .4rem;
  background: rgba(15, 18, 24, .96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity .2s, transform .2s var(--ease), visibility .2s;
}
/* Hover bridge across the gap between the parent link and the panel */
.nav-sub::before { content: ""; position: absolute; inset: -.6rem 0 100% 0; }
.nav-group:hover .nav-sub, .nav-group:focus-within .nav-sub { opacity: 1; visibility: visible; transform: none; }
.nav-sub a { border-radius: calc(var(--radius-sm) - 4px); }

.header-actions { display: flex; align-items: center; gap: .9rem; }

.usa-pill {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .4rem .75rem .4rem .5rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: .72rem;
  white-space: nowrap;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--muted);
  background: var(--surface);
}
.flag { width: 21px; height: 11px; border-radius: 2px; overflow: hidden; flex-shrink: 0; box-shadow: 0 0 0 1px rgba(255,255,255,.08); }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: transparent;
  cursor: pointer;
  position: relative;
}
.nav-toggle span {
  position: absolute; left: 12px; right: 12px; height: 1.5px; background: var(--text);
  transition: transform .3s var(--ease), top .3s var(--ease);
}
.nav-toggle span:first-child { top: 16px; }
.nav-toggle span:last-child { top: 24px; }
.nav-open .nav-toggle span:first-child { top: 20px; transform: rotate(45deg); }
.nav-open .nav-toggle span:last-child { top: 20px; transform: rotate(-45deg); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  padding: calc(var(--header-h) + clamp(48px, 10vh, 120px)) 0 clamp(64px, 10vh, 120px);
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}

.hero-grid {
  position: absolute; inset: -2px;
  z-index: -2;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 70% at 60% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 60% 40%, #000 30%, transparent 75%);
  animation: grid-drift 24s linear infinite;
}
@keyframes grid-drift { to { background-position: 64px 64px; } }

.hero-glow {
  position: absolute;
  z-index: -1;
  width: 900px; height: 900px;
  right: -260px; top: -280px;
  background: radial-gradient(circle, rgba(94,234,212,.16), transparent 60%);
  filter: blur(20px);
  pointer-events: none;
}

.hero-mark {
  position: absolute;
  z-index: -1;
  width: min(820px, 90vw);
  height: min(820px, 90vw);
  right: max(-260px, -20vw);
  top: 50%;
  translate: 0 -50%;
  color: rgba(255,255,255,.045);
  animation: spin 140s linear infinite;
  pointer-events: none;
}
.hero-mark { --zm-core: rgba(94,234,212,.22); }
@keyframes spin { to { rotate: 360deg; } }

.hero-inner { position: relative; }

.hero h1 {
  font-size: clamp(2.3rem, 5.4vw, 4.6rem);
  max-width: 16ch;
  text-transform: uppercase;
  letter-spacing: -0.015em;
}

.lede {
  margin: 1.8rem 0 2.4rem;
  max-width: 56ch;
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
  color: var(--muted);
}

.hero-cta { display: flex; flex-wrap: wrap; gap: .85rem; }

.hero-stats {
  list-style: none;
  margin: clamp(48px, 8vh, 88px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 220px));
  gap: 1px;
  border-top: 1px solid var(--border);
}
.hero-stats li { padding: 1.3rem 1.5rem 0 0; }
.hero-stats strong {
  display: block;
  font: 800 1.35rem/1.1 var(--font-display);
  font-variation-settings: "wdth" 125;
  margin-bottom: .35rem;
}
.hero-stats span { font-size: .85rem; color: var(--muted); }

.hero-terminal {
  position: absolute;
  right: max(var(--gutter), calc((100vw - var(--container)) / 2 + var(--gutter)));
  bottom: clamp(64px, 12vh, 140px);
  width: 420px;
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  background: rgba(19, 23, 32, .78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 30px 80px -30px rgba(0,0,0,.8), 0 0 0 1px rgba(94,234,212,.04);
  overflow: hidden;
}
.term-bar { display: flex; align-items: center; gap: 6px; padding: .7rem .9rem; border-bottom: 1px solid var(--border); }
.term-bar i { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,.14); }
.term-bar span { margin-left: .6rem; font: .72rem var(--font-mono); color: var(--dim); }
.hero-terminal pre {
  margin: 0;
  padding: 1rem 1.1rem 1.2rem;
  font: .78rem/1.75 var(--font-mono);
  color: #c9d1dc;
  white-space: pre;
  overflow: hidden;
}
.t-dim { color: var(--dim); }
.t-ok { color: var(--accent); }
.t-accent { color: var(--accent); font-weight: 500; }
.caret { display: inline-block; width: 7px; height: 1em; margin-left: 4px; vertical-align: -2px; background: var(--accent); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- Sections ---------- */

.section { position: relative; padding: clamp(80px, 12vw, 150px) 0; }
.section-alt {
  background: var(--bg-2);
  border-block: 1px solid var(--border);
}

.section-head { max-width: 720px; margin-bottom: clamp(40px, 6vw, 72px); }
.section h2 { font-size: clamp(1.9rem, 4.2vw, 3.3rem); text-transform: uppercase; }
.section-lede { margin: 1.3rem 0 0; color: var(--muted); font-size: 1.07rem; max-width: 60ch; }

/* Capability cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.card {
  position: relative;
  padding: 2rem 1.8rem 2.2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  overflow: hidden;
  transition: border-color .3s, transform .4s var(--ease);
}
.card::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(500px circle at var(--mx, 50%) var(--my, 0%), rgba(94,234,212,.09), transparent 45%);
  opacity: 0;
  transition: opacity .3s;
  pointer-events: none;
}
.card:hover { border-color: rgba(94,234,212,.35); transform: translateY(-4px); }
.card:hover::before { opacity: 1; }

.card-featured { border-color: rgba(94,234,212,.22); }
.card-featured::after {
  content: "";
  position: absolute; left: 0; right: 0; top: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.card-icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: 14px;
  background: var(--accent-soft);
  border: 1px solid rgba(94,234,212,.25);
  margin-bottom: 1.6rem;
}
.card-icon svg { width: 26px; height: 26px; fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

.card h3 { font-size: 1.12rem; text-transform: uppercase; letter-spacing: .01em; margin-bottom: .8rem; }
.card p { margin: 0 0 1.4rem; color: var(--muted); font-size: .96rem; }

.ticks { list-style: none; margin: 0; padding: 1.2rem 0 0; border-top: 1px solid var(--border); display: grid; gap: .6rem; }
.ticks li { position: relative; padding-left: 1.5rem; font-size: .92rem; color: #d3d8df; }
.ticks li::before {
  content: "";
  position: absolute; left: 0; top: .5em;
  width: 9px; height: 9px;
  border: 1.5px solid var(--accent);
}

/* ---------- Why Keystone ---------- */

.why { border-top: 1px solid var(--border); }

.why-stat {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
  padding: clamp(28px, 4vw, 48px);
  border: 1px solid rgba(94,234,212,.22);
  border-radius: calc(var(--radius) + 6px);
  background: radial-gradient(600px circle at 0% 0%, rgba(94,234,212,.1), transparent 60%), var(--surface);
}
.why-num {
  margin: 0;
  font: 900 clamp(4.5rem, 11vw, 8.5rem)/.9 var(--font-display);
  font-variation-settings: "wdth" 125;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.why-num span { font-size: .55em; vertical-align: .55em; margin-left: .05em; }
.why-label {
  margin: .9rem 0 0;
  font: 700 clamp(1rem, 1.8vw, 1.3rem)/1.2 var(--font-display);
  font-variation-settings: "wdth" 125;
  text-transform: uppercase;
}
.why-label sup { color: var(--accent); font-size: .7em; }
.why-sub { margin: .6rem 0 0; color: var(--muted); }

.why-bars { display: grid; gap: 1.1rem; }
.why-legend { display: flex; flex-wrap: wrap; gap: .5rem 1.4rem; font-size: .8rem; color: var(--muted); }
.why-legend span { display: inline-flex; align-items: center; gap: .5rem; }
.why-legend span::before { content: ""; width: 12px; height: 12px; border-radius: 3px; }
.lg-admin::before { background: #3a4150; }
.lg-imp::before { background: var(--accent); }
.why-row { display: grid; gap: .45rem; }
.why-row-label { font-size: .85rem; font-weight: 500; }
.bar { display: flex; height: 44px; border-radius: 10px; overflow: hidden; background: rgba(255,255,255,.04); }
.bar i {
  display: flex; align-items: center; justify-content: center;
  font: 600 .82rem/1 var(--font-body);
  font-style: normal;
  white-space: nowrap;
  overflow: hidden;
  width: var(--w);
  transition: width 1.4s var(--ease) .2s;
}
.seg-admin { background: #3a4150; color: #c9d1dc; }
.seg-imp { background: var(--accent); color: var(--accent-ink); }
.js .why-stat:not(.in) .bar i { width: 0; }
.why-caption { margin: 0; font-size: .78rem; color: var(--dim); }

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: clamp(40px, 5vw, 64px);
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.why-grid .ks-feature p { margin: 0; }

.from-to { margin-top: clamp(40px, 5vw, 64px); }
.from-to h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); text-transform: uppercase; margin-bottom: 1.2rem; }
.from-to ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0 2.5rem; }
.from-to li {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding: .95rem 0;
  border-bottom: 1px solid var(--border);
  font-size: .93rem;
}
.from-to li span { color: var(--muted); text-decoration: line-through; text-decoration-color: rgba(255,255,255,.25); }
.from-to li::after {
  content: "\2192";
  grid-column: 2; grid-row: 1;
  color: var(--accent);
  font-weight: 600;
}
.from-to li b { grid-column: 3; font-weight: 500; color: var(--text); }

.why-cta { display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; margin-top: clamp(40px, 5vw, 56px); }
.footnote { margin: 0; flex: 1 1 320px; font-size: .78rem; color: var(--dim); }

/* ---------- Compliance & monitoring ---------- */

.comp-loop {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
}
.comp-loop li {
  position: relative;
  padding: 1.6rem 1.4rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}
.comp-loop li:not(:last-child)::after {
  content: "\2192";
  position: absolute;
  right: -22px; top: 50%;
  translate: 0 -50%;
  width: 16px;
  text-align: center;
  color: var(--accent);
  font-weight: 700;
}
.step-num {
  display: inline-grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(94,234,212,.4);
  background: var(--accent-soft);
  color: var(--accent);
  font: 700 .78rem/1 var(--font-body);
  margin-bottom: 1rem;
}
.comp-loop h3 { font-size: 1rem; text-transform: uppercase; letter-spacing: .06em; margin-bottom: .5rem; }
.comp-loop p { margin: 0; color: var(--muted); font-size: .9rem; }

.loop-repeat {
  display: flex; align-items: center; justify-content: center; gap: .6rem;
  margin: 1.2rem 0 0;
  padding: .7rem;
  border: 1px dashed rgba(94,234,212,.3);
  border-top: 0;
  border-radius: 0 0 var(--radius) var(--radius);
  font-size: .8rem; color: var(--muted);
}
.loop-repeat svg { width: 16px; height: 16px; fill: none; stroke: var(--accent); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.comp-cards { margin-top: clamp(48px, 6vw, 72px); }

.reach {
  margin-top: clamp(48px, 6vw, 72px);
  padding: clamp(28px, 4vw, 48px);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 6px);
  background: radial-gradient(700px circle at 100% 0%, rgba(94,234,212,.08), transparent 60%), var(--surface);
  text-align: center;
}
.reach-line {
  margin: 0 auto 1.8rem;
  max-width: 30ch;
  font: 800 clamp(1.3rem, 2.8vw, 2.1rem)/1.2 var(--font-display);
  font-variation-settings: "wdth" 125;
  text-transform: uppercase;
}
.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .6rem; justify-content: center; }
.chips li {
  padding: .55rem 1rem;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  font-size: .86rem;
  font-weight: 500;
}
.chips-outline { justify-content: flex-start; }
.chips-outline li { background: transparent; border-color: rgba(94,234,212,.35); color: var(--accent); font-size: .84rem; font-weight: 600; letter-spacing: .02em; }

.frameworks { margin-top: clamp(40px, 5vw, 56px); }
.frameworks h3 { font-size: clamp(1rem, 1.8vw, 1.25rem); text-transform: uppercase; margin-bottom: 1.2rem; }
.frameworks .why-cta { margin-top: clamp(28px, 4vw, 40px); }

/* Principles (under capabilities) */
.principles { list-style: none; margin: clamp(56px, 7vw, 88px) 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--border); }
.principles li { padding: 2rem 2rem 0 0; }
.principles li + li { padding-left: 2rem; border-left: 1px solid var(--border); }
.principles span { font: 500 .75rem/1 var(--font-mono); color: var(--accent); }
.principles h3 { font-size: 1.05rem; text-transform: uppercase; letter-spacing: .12em; font-weight: 700; margin: .9rem 0 .7rem; }
.principles p { margin: 0; color: var(--muted); font-size: .95rem; }

/* ---------- Keystone ---------- */

.keystone {
  overflow: hidden;
  isolation: isolate;
  background: linear-gradient(180deg, #11151d 0%, var(--bg) 100%);
  border-top: 1px solid var(--border);
}
.keystone::before {
  content: "";
  position: absolute; left: 0; right: 0; top: -1px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: .7;
}
.ks-glow {
  position: absolute; z-index: -1;
  width: 1100px; height: 700px;
  left: 50%; top: -360px; translate: -50% 0;
  background: radial-gradient(ellipse, rgba(94,234,212,.12), transparent 65%);
  pointer-events: none;
}

.ks-head { display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(40px, 5vw, 72px); align-items: center; }
.ks-brand { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.8rem; }
.ks-logo { width: 88px; height: 53px; color: var(--text); }
.ks-word {
  font: 800 clamp(1.6rem, 3vw, 2.3rem)/1 var(--font-display);
  font-variation-settings: "wdth" 125;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.badge {
  padding: .3rem .6rem;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid rgba(94,234,212,.35);
  color: var(--accent);
  font: 600 .68rem/1 var(--font-body);
  letter-spacing: .12em;
  text-transform: uppercase;
}
.keystone h2 { font-size: clamp(1.7rem, 3.4vw, 2.7rem); }
.ks-intro .section-lede { margin-bottom: 2.2rem; }

/* Mock console */
.ks-console {
  border: 1px solid var(--border-strong);
  border-radius: 16px;
  background: rgba(19, 23, 32, .9);
  box-shadow: 0 40px 100px -40px rgba(0,0,0,.9), 0 0 0 1px rgba(94,234,212,.05), 0 0 80px -20px rgba(94,234,212,.15);
  overflow: hidden;
  font-size: .82rem;
}
.kc-body { display: grid; grid-template-columns: 150px 1fr; min-height: 340px; }
.kc-side { display: flex; flex-direction: column; gap: .15rem; padding: 1rem .7rem; border-right: 1px solid var(--border); background: rgba(10,12,17,.5); }
.kc-logo { width: 46px; height: 28px; color: var(--text); margin: 0 0 1rem .5rem; }
.kc-side span { padding: .45rem .6rem; border-radius: 8px; color: var(--muted); }
.kc-side span.on { background: var(--accent-soft); color: var(--accent); }
.kc-main { padding: 1.2rem 1.3rem; display: flex; flex-direction: column; gap: 1rem; min-width: 0; }
.kc-title { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.kc-title b { font-family: var(--font-display); font-variation-settings: "wdth" 110; font-size: .95rem; }
.chip { padding: .25rem .55rem; border-radius: 999px; font-size: .7rem; font-weight: 600; }
.chip-ok { background: var(--accent-soft); color: var(--accent); }
.kc-flow { list-style: none; margin: 0; padding: 0; display: grid; gap: .5rem; counter-reset: step; }
.kc-flow li {
  position: relative;
  display: flex; justify-content: space-between; gap: 1rem;
  padding: .6rem .8rem .6rem 2.4rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
}
.kc-flow li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute; left: .7rem; top: 50%; translate: 0 -50%;
  width: 20px; height: 20px; border-radius: 50%;
  display: grid; place-items: center;
  font: 600 .66rem/1 var(--font-mono);
  border: 1px solid var(--border-strong); color: var(--muted);
}
.kc-flow li.done::before { content: "\2713"; background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.kc-flow li.run { border-color: rgba(94,234,212,.4); }
.kc-flow li.run::before { border-color: var(--accent); color: var(--accent); animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 5px rgba(94,234,212,.15); } }
.kc-flow b { font-weight: 500; }
.kc-flow span { color: var(--dim); font-family: var(--font-mono); font-size: .72rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.kc-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin-top: auto; }
.kc-stats div { padding: .7rem .8rem; border: 1px solid var(--border); border-radius: 10px; }
.kc-stats b { display: block; font: 800 1.15rem/1.1 var(--font-display); font-variation-settings: "wdth" 115; }
.kc-stats span { color: var(--dim); font-size: .7rem; }

/* Feature grid */
.ks-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: clamp(64px, 8vw, 104px); background: var(--border); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.ks-feature { padding: 2rem 1.8rem; background: var(--bg); transition: background .3s; }
.ks-feature:hover { background: #121620; }
.ks-feature-accent { background: linear-gradient(180deg, rgba(94,234,212,.06), var(--bg) 60%); }
.ks-feature .card-icon { width: 44px; height: 44px; border-radius: 12px; margin-bottom: 1.3rem; }
.ks-feature .card-icon svg { width: 22px; height: 22px; }
.ks-feature h3 { font-size: 1rem; text-transform: uppercase; letter-spacing: .02em; margin-bottom: .7rem; }
.ks-feature p { margin: 0 0 1.2rem; color: var(--muted); font-size: .93rem; }
.ks-feature .ticks { border-top: 0; padding-top: 0; }
.ks-feature .ticks li { font-size: .86rem; }

/* How it works */
.ks-how { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(32px, 5vw, 72px); align-items: center; margin-top: clamp(64px, 8vw, 104px); }
.ks-how h3 { font-size: clamp(1.3rem, 2.3vw, 1.8rem); text-transform: uppercase; margin-bottom: 1rem; }
.ks-how-copy p:not(.kicker) { margin: 0; color: var(--muted); }
.ks-diagram { width: 100%; height: auto; overflow: visible; }
.ks-diagram-wrap { min-width: 0; }
.dg-links path { fill: none; stroke: var(--accent); stroke-width: 1.5; stroke-dasharray: 5 5; opacity: .7; animation: flow 1.2s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -10; } }
.dg-node rect { fill: #151a24; stroke: var(--border-strong); }
.dg-core rect { fill: rgba(94,234,212,.08); stroke: rgba(94,234,212,.55); }
.dg-agent rect { fill: #12161e; }
.dg-node text { fill: var(--text); font: 600 14px var(--font-body); text-anchor: middle; }
.dg-node text.sub { fill: var(--muted); font: 400 11px var(--font-body); }
.dg-agent text { font-size: 12.5px; font-weight: 500; }

/* Security strip */
/* Hybrid-AI */
.ks-ai { margin-top: clamp(64px, 8vw, 104px); }
.ks-ai-head { max-width: 720px; }
.ks-ai-head h3 { font-size: clamp(1.3rem, 2.3vw, 1.8rem); text-transform: uppercase; margin-bottom: 1rem; }
.ks-ai-head p:not(.kicker) { margin: 0; color: var(--muted); }
.ks-ai .comp-loop { margin-top: clamp(32px, 4vw, 48px); }
.ks-ai-split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 4vw, 56px); margin-top: clamp(32px, 4vw, 48px); }
.ks-ai-split h4 { margin: 0 0 1rem; font-size: .95rem; text-transform: uppercase; letter-spacing: .06em; }
.ticks-never li { color: var(--muted); }
.ticks-never li::before { content: "\00d7"; border: 0; width: auto; height: auto; top: -.05em; color: var(--danger); font-weight: 700; }
.ks-ai-note { margin-top: 1.5rem; }

.ks-security { margin-top: clamp(56px, 7vw, 88px); padding: clamp(24px, 3.5vw, 40px); border: 1px solid rgba(94,234,212,.22); border-radius: var(--radius); background: linear-gradient(135deg, rgba(94,234,212,.06), transparent 50%); }
.ks-security h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); text-transform: uppercase; margin-bottom: 1.5rem; }
.ks-security ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem 1.5rem; }
.ks-security li { position: relative; padding-left: 1.6rem; font-size: .9rem; color: #d3d8df; }
.ks-security li::before {
  content: "\2713";
  position: absolute; left: 0; top: .2em;
  width: 16px; height: 16px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  font: 700 .62rem/1 var(--font-body);
}

/* Spec row */
.ks-specs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; margin: clamp(40px, 5vw, 56px) 0 0; }
.ks-specs div { border-top: 1px solid var(--border); padding-top: 1rem; }
.ks-specs dt { font: 500 .7rem/1 var(--font-display); font-variation-settings: "wdth" 125; letter-spacing: .22em; text-transform: uppercase; color: var(--accent); margin-bottom: .6rem; }
.ks-specs dd { margin: 0; color: var(--muted); font-size: .9rem; }

/* USA band */
.usa { padding-block: clamp(64px, 9vw, 110px); }
.usa-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
  padding: clamp(28px, 4vw, 48px);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 6px);
  background:
    linear-gradient(120deg, rgba(178,34,52,.07), transparent 40%, transparent 60%, rgba(60,59,110,.18)),
    var(--surface);
}
.usa-flag { width: 114px; height: 60px; border-radius: 6px; overflow: hidden; box-shadow: 0 16px 40px -14px rgba(0,0,0,.7), 0 0 0 1px rgba(255,255,255,.1); }
.usa h2 { font-size: clamp(1.4rem, 2.6vw, 2.1rem); max-width: 22ch; }
.usa-inner p:not(.kicker) { margin: 1rem 0 0; color: var(--muted); max-width: 58ch; }
.usa-points { list-style: none; margin: 0; padding: 0; display: grid; gap: .8rem; font-size: .9rem; color: var(--muted); }
.usa-points li { padding-left: 1rem; border-left: 2px solid var(--accent); white-space: nowrap; }
.usa-points strong { color: var(--text); font-weight: 600; }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(40px, 6vw, 96px); align-items: start; }
.contact-meta { display: flex; align-items: center; gap: .7rem; margin-top: 2rem; font-size: .88rem; color: var(--muted); }
.contact-email { margin: 1rem 0 0; font-size: .95rem; color: var(--muted); }
.contact-email a { color: var(--accent); }

.contact-form {
  padding: clamp(24px, 3.5vw, 40px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  display: grid;
  gap: 1.1rem;
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.field { display: grid; gap: .45rem; }
.field > span { font-size: .8rem; font-weight: 500; letter-spacing: .04em; color: var(--muted); }
.field em { font-style: normal; color: var(--dim); }
.field input, .field textarea, .field select {
  width: 100%;
  padding: .85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: rgba(10, 12, 17, .6);
  color: var(--text);
  font: inherit;
  font-size: .97rem;
  transition: border-color .2s, box-shadow .2s;
  resize: vertical;
}
.field textarea { min-height: 140px; }
.field select {
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  padding-right: 2.6rem;
  background: rgba(10, 12, 17, .6) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b93a1' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") right .9rem center / 16px no-repeat;
}
.field select option { background: var(--bg-2); color: var(--text); }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.field.invalid input, .field.invalid textarea { border-color: var(--danger); }

.form-foot { display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap; margin-top: .4rem; }
.form-status { margin: 0; font-size: .9rem; color: var(--muted); }
.form-status.ok { color: var(--accent); }
.form-status.err { color: var(--danger); }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 56px 0 28px; background: #0c0f14; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; }
.footer-tag {
  margin: 0;
  font: 500 .72rem/1 var(--font-display);
  font-variation-settings: "wdth" 125;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--dim);
}
.footer-usa { margin: 0; display: inline-flex; align-items: center; gap: .6rem; font-size: .85rem; color: var(--muted); }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  margin-top: 40px; padding-top: 22px;
  border-top: 1px solid var(--border);
  font-size: .8rem; color: var(--dim);
}
.footer-bottom a:hover { color: var(--text); }

/* ---------- Reveal on scroll ---------- */

.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */

@media (max-width: 1360px) {
  .usa-pill { display: none; }
}

@media (max-width: 1180px) {
  .hero-terminal { display: none; }
}

@media (max-width: 1060px) {
  .nav a { padding: .5rem .6rem; font-size: .86rem; }
}

@media (max-width: 960px) {
  .header-actions .btn { display: none; }
}

@media (max-width: 980px) {
  .cards { grid-template-columns: 1fr; max-width: 620px; }
  .principles { grid-template-columns: 1fr; border-top: 0; }
  .principles li, .principles li + li { padding: 1.6rem 0; border-left: 0; border-top: 1px solid var(--border); }
  .ks-head, .ks-how { grid-template-columns: 1fr; }
  .ks-features { grid-template-columns: 1fr 1fr; }
  .ks-security ul { grid-template-columns: 1fr 1fr; }
  .ks-ai-split { grid-template-columns: 1fr; }
  .ks-specs { grid-template-columns: 1fr 1fr; }
  .why-stat { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr 1fr; }
  .from-to ul { grid-template-columns: 1fr; }
  .comp-loop { grid-template-columns: 1fr 1fr; }
  .comp-loop li:nth-child(2)::after { content: none; }
  .usa-inner { grid-template-columns: 1fr; }
  .usa-points li { white-space: normal; }
  .contact { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    gap: 0;
    padding: .5rem var(--gutter) 1.2rem;
    background: rgba(15, 18, 24, .96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .25s, transform .25s var(--ease), visibility .25s;
  }
  .nav a { padding: .95rem .25rem; border-radius: 0; border-bottom: 1px solid var(--border); font-size: 1rem; }
  .nav a:hover { background: none; }
  .nav-group { display: flex; flex-direction: column; }
  .nav-group:has(.active) > .nav-parent { background: none; }
  .nav-sub {
    position: static;
    margin: 0;
    padding: 0;
    min-width: 0;
    background: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: 0;
    border-radius: 0;
    opacity: 1;
    visibility: inherit;
    transform: none;
  }
  .nav-sub::before { display: none; }
  .nav-sub a { padding-left: 1.25rem; font-size: .95rem; }
  .caret { display: none; }
  .nav-open .nav { opacity: 1; transform: none; visibility: visible; }
  .nav-open .site-header { background: rgba(15, 18, 24, .96); border-bottom-color: var(--border); }
  .nav-toggle { display: block; }
  .header-actions { margin-left: auto; }
  .header-actions .btn { display: none; }
}

@media (max-width: 560px) {
  :root { --header-h: 66px; }
  .brand-mark { width: 34px; height: 34px; }
  .usa-pill { padding: .35rem; }
  .usa-pill span { display: none; }
  .hero-stats { grid-template-columns: 1fr; }
  .hero-stats li { padding: 1rem 0; border-bottom: 1px solid var(--border); }
  .field-row { grid-template-columns: 1fr; }
  .ks-features, .ks-security ul, .ks-specs { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .comp-loop { grid-template-columns: 1fr; gap: 26px; }
  .comp-loop li:not(:last-child)::after { content: "\2193"; right: auto; left: 50%; top: auto; bottom: -22px; translate: -50% 0; }
  .reach { text-align: left; }
  .reach .chips { justify-content: flex-start; }
  .section h2 { font-size: clamp(1.5rem, 7.4vw, 1.9rem); }
  .from-to li { grid-template-columns: 1fr; gap: .25rem; }
  .from-to li::after { content: none; }
  .from-to li b { grid-column: 1; }
  .from-to li b::before { content: "\2192  "; color: var(--accent); }
  .kc-body { grid-template-columns: 1fr; }
  .kc-side { display: none; }
  .kc-flow span { display: none; }
  .ks-logo { width: 70px; height: 42px; }
  .ks-diagram-wrap { overflow-x: auto; margin-inline: calc(var(--gutter) * -1); padding: 4px var(--gutter); scrollbar-width: thin; }
  .ks-diagram { min-width: 540px; }
  .hero h1 { font-size: clamp(1.75rem, 8.4vw, 2.3rem); }
  .eyebrow { letter-spacing: .16em; font-size: .68rem; }
  .eyebrow i { padding: 0 .15em; }
  .form-foot .btn { width: 100%; justify-content: center; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}