:root {
  --bg: #0e1216;
  --bg-2: #131a20;
  --surface: #171e25;
  --surface-2: #1e272f;
  --border: #26313a;
  --border-2: #35434e;
  --ink: #e7edf2;
  --muted: #91a3b0;
  --faint: #667784;
  --accent: #f0a537;
  --accent-ink: #0e1216;
  --accent-soft: rgba(240, 165, 55, .12);
  --pass: #45c05a;
  --warn: #d8a02a;
  --fail: #f0564b;
  --info: #57a2f0;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max: 1120px;
  --shadow: 0 24px 64px -32px rgba(0, 0, 0, .85);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f7f9;
    --bg-2: #eaf0f4;
    --surface: #fff;
    --surface-2: #f1f5f7;
    --border: #d9e2e8;
    --border-2: #bdcbd4;
    --ink: #101820;
    --muted: #4f5e68;
    --faint: #7d8d98;
    --accent: #b7760f;
    --accent-ink: #fff;
    --accent-soft: rgba(183, 118, 15, .1);
    --pass: #1e9138;
    --warn: #9b6d09;
    --fail: #cf3d34;
    --info: #216dd1;
    --shadow: 0 24px 60px -36px rgba(31, 47, 59, .45);
  }
}

:root[data-theme="dark"] {
  --bg: #0e1216; --bg-2: #131a20; --surface: #171e25; --surface-2: #1e272f;
  --border: #26313a; --border-2: #35434e; --ink: #e7edf2; --muted: #91a3b0;
  --faint: #667784; --accent: #f0a537; --accent-ink: #0e1216;
  --accent-soft: rgba(240, 165, 55, .12); --pass: #45c05a; --warn: #d8a02a;
  --fail: #f0564b; --info: #57a2f0; --shadow: 0 24px 64px -32px rgba(0, 0, 0, .85);
}

:root[data-theme="light"] {
  --bg: #f4f7f9; --bg-2: #eaf0f4; --surface: #fff; --surface-2: #f1f5f7;
  --border: #d9e2e8; --border-2: #bdcbd4; --ink: #101820; --muted: #4f5e68;
  --faint: #7d8d98; --accent: #b7760f; --accent-ink: #fff;
  --accent-soft: rgba(183, 118, 15, .1); --pass: #1e9138; --warn: #9b6d09;
  --fail: #cf3d34; --info: #216dd1; --shadow: 0 24px 60px -36px rgba(31, 47, 59, .45);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  background-image: radial-gradient(900px 480px at 82% -8%, var(--accent-soft), transparent 64%);
  color: var(--ink);
  font: 1rem/1.62 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body::before { content:""; position:fixed; inset:0; z-index:-1; pointer-events:none; background:linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px),radial-gradient(circle at 82% 8%,rgba(87,162,240,.09),transparent 28%),radial-gradient(circle at 14% 26%,var(--accent-soft),transparent 25%); background-size:42px 42px,42px 42px,auto,auto; }
a { color: inherit; text-decoration: none; }
img, video { max-width: 100%; }
button { font: inherit; }
.wrap { width: min(100% - 48px, var(--max)); margin-inline: auto; }
.mono { font-family: var(--mono); }
.muted { color: var(--muted); }
.eyebrow {
  color: var(--accent);
  font: .74rem/1.4 var(--mono);
  letter-spacing: .15em;
  text-transform: uppercase;
}
h1, h2, h3 { margin: 0; line-height: 1.08; letter-spacing: -.025em; text-wrap: balance; }
h1 { font-size: clamp(2.8rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.25rem); }
h3 { font-size: 1.14rem; }
p { margin: 0; }

.skip-link { position: fixed; z-index: 1000; top: 8px; left: 8px; transform: translateY(-150%); padding: 8px 12px; background: var(--accent); color: var(--accent-ink); border-radius: 8px; }
.skip-link:focus { transform: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 5px; }

.topbar { position: sticky; z-index: 50; top: 0; border-bottom: 1px solid color-mix(in srgb,var(--ink) 8%,transparent); background: color-mix(in srgb, var(--bg) 76%, transparent); backdrop-filter: blur(20px) saturate(145%); }
.topbar .wrap { min-height: 64px; display: flex; align-items: center; gap: 20px; }
.wordmark { display: inline-flex; align-items: center; gap: 10px; font: 700 1.05rem var(--mono); }
.wordmark .brand-logo { display: block; width: 150px; height: auto; content: url("./prooflane-logo-dark.svg"); }
.footer .wordmark .brand-logo { width: 132px; }
:root[data-theme="light"] .brand-logo { content: url("./prooflane-logo-light.svg"); }
:root[data-theme="dark"] .brand-logo { content: url("./prooflane-logo-dark.svg"); }
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .brand-logo { content: url("./prooflane-logo-light.svg"); }
}
.wordmark-mark { width: 27px; display: grid; gap: 3px; }
.wordmark-mark i { display: block; height: 3px; border-radius: 3px; background: var(--accent); }
.wordmark-mark i:nth-child(2) { opacity: .7; width: 80%; }
.wordmark-mark i:nth-child(3) { opacity: .4; width: 60%; }
.beta { border: 1px solid var(--border-2); border-radius: 5px; color: var(--warn); padding: 2px 6px; font: .62rem var(--mono); text-transform: uppercase; }
.nav { display: flex; align-items: center; gap: 22px; margin-left: 20px; }
.nav > a, .product-menu summary { color: var(--muted); cursor: pointer; font-size: .9rem; list-style: none; }
.nav > a:hover, .product-menu summary:hover, .nav [aria-current="page"] { color: var(--ink); }
.product-menu { position: relative; }
.product-menu summary::-webkit-details-marker { display: none; }
.product-menu summary::after { content: "⌄"; margin-left: 6px; color: var(--faint); }
.product-menu[open] summary::after { content: "⌃"; }
.product-menu-panel { position: absolute; top: calc(100% + 15px); left: -18px; width: 270px; padding: 8px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow); }
.product-menu-panel a { display: block; padding: 9px 10px; border-radius: 7px; color: var(--muted); font-size: .86rem; }
.product-menu-panel a:hover, .product-menu-panel a[aria-current="page"] { background: var(--surface-2); color: var(--ink); }
.mobile-menu { display: none; position: relative; }
.mobile-menu summary { cursor: pointer; color: var(--muted); font-size: .9rem; }
.mobile-menu nav { position: absolute; top: calc(100% + 14px); right: 0; width: min(280px, calc(100vw - 30px)); padding: 8px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow); }
.mobile-menu nav a { display: block; padding: 10px; border-radius: 7px; color: var(--muted); }
.mobile-menu nav a:hover, .mobile-menu nav a[aria-current="page"] { color: var(--ink); background: var(--surface-2); }
.spacer { flex: 1; }
.theme { width: 38px; height: 38px; border: 1px solid var(--border-2); border-radius: 9px; background: var(--surface); color: var(--muted); cursor: pointer; }
.btn { display: inline-flex; justify-content: center; align-items: center; min-height: 42px; padding: 9px 16px; border: 1px solid var(--border-2); border-radius: 9px; background: var(--surface); color: var(--ink); font-size: .92rem; font-weight: 700; transition: border-color .16s, transform .16s; }
.btn:hover { border-color: var(--accent); transform: translateY(-1px); }
.btn.primary { border-color: var(--accent); background: var(--accent); color: var(--accent-ink); }

.hero { position:relative; padding: clamp(76px, 9vw, 118px) 0 88px; }
.hero::after { content:""; position:absolute; width:620px; height:620px; right:-260px; top:-220px; z-index:-1; border:1px solid color-mix(in srgb,var(--info) 16%,transparent); border-radius:50%; box-shadow:0 0 0 90px color-mix(in srgb,var(--info) 2%,transparent),0 0 0 180px color-mix(in srgb,var(--accent) 1.5%,transparent); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(360px, .98fr); gap: clamp(36px, 6vw, 72px); align-items: center; }
.hero h1 { font-size:clamp(3rem,5.2vw,5rem); font-weight:760; letter-spacing:-.055em; }
.hero .lede { max-width: 60ch; margin-top: 22px; color: var(--muted); font-size: 1.15rem; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }
.proof-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.chip { padding: 5px 10px; border: 1px solid var(--border); border-radius: 999px; color: var(--muted); font: .72rem var(--mono); }

.terminal { position:relative; overflow: hidden; border: 1px solid color-mix(in srgb,var(--accent) 24%,var(--border)); border-radius: 18px; background:linear-gradient(145deg,#10171d,#080c10); box-shadow:0 35px 90px -48px #000,0 0 60px color-mix(in srgb,var(--accent) 7%,transparent); color: #d9e4eb; transform:perspective(1000px) rotateY(-2deg); transition:transform .35s,border-color .35s; }
.terminal::before { content: "ILLUSTRATIVE EXAMPLE"; position: absolute; z-index: 2; top: 10px; right: 13px; padding: 4px 7px; border: 1px solid #42515d; border-radius: 5px; color: #8fb6d8; background: #10171d; font: .58rem/1 var(--mono); letter-spacing: .07em; }
.terminal:hover { transform:perspective(1000px) rotateY(0) translateY(-5px); border-color:color-mix(in srgb,var(--accent) 50%,var(--border)); }
.terminal::after { content:""; position:absolute; left:-30%; top:0; width:20%; height:100%; background:linear-gradient(90deg,transparent,rgba(87,162,240,.10),rgba(240,165,55,.13),transparent); filter:blur(5px); animation:productSweep 7s linear infinite; pointer-events:none; }
.terminal-head { display: flex; align-items: center; gap: 6px; padding: 12px 156px 12px 15px; border-bottom: 1px solid #24303a; color: #8194a2; font: .72rem var(--mono); }
.terminal-head i { width: 8px; height: 8px; border-radius: 50%; background: #43515c; }
.terminal-head span { margin-left: 6px; }
.terminal pre { min-height: 280px; margin: 0; padding: 20px; white-space: pre-wrap; color: #b7c7d1; font: .8rem/1.8 var(--mono); }
.terminal .cmd { color: #f0a537; }
.terminal .ok { color: #52c96a; }
.terminal .bad { color: #f26a60; }

/* Sammy Intelligence: functional diagrams rendered from semantic HTML. */
.sammy-map {
  position: relative;
  overflow: hidden;
  padding: 18px;
  border: 1px solid color-mix(in srgb, var(--accent) 34%, var(--border));
  border-radius: 18px;
  background:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(145deg, color-mix(in srgb, var(--surface) 95%, black), color-mix(in srgb, var(--bg) 96%, black));
  background-size: 24px 24px, 24px 24px, auto;
  box-shadow: 0 35px 90px -48px #000, 0 0 68px color-mix(in srgb, var(--accent) 8%, transparent);
}
.sammy-map::after {
  content: "";
  position: absolute;
  inset: -45% auto auto -18%;
  width: 72%;
  aspect-ratio: 1;
  border: 1px solid color-mix(in srgb, var(--info) 20%, transparent);
  border-radius: 50%;
  box-shadow: 0 0 0 52px color-mix(in srgb, var(--info) 2.5%, transparent), 0 0 0 104px color-mix(in srgb, var(--accent) 1.8%, transparent);
  pointer-events: none;
}
.sammy-map-head, .sammy-map-foot { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.sammy-map-head { margin-bottom: 14px; color: var(--muted); font: .68rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.sammy-live { display: inline-flex; align-items: center; gap: 7px; color: var(--pass); }
.sammy-live::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; box-shadow: 0 0 14px currentColor; animation: sammyPulse 2s ease-in-out infinite; }
.sammy-sources { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.sammy-source, .sammy-route, .sammy-review-node {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
}
.sammy-source { padding: 10px; }
.sammy-source span, .sammy-route span, .sammy-review-node span { display: block; color: var(--faint); font: .62rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.sammy-source b, .sammy-route b, .sammy-review-node b { display: block; margin-top: 4px; font-size: .8rem; }
.sammy-source i { display: block; width: 28px; height: 3px; margin-top: 9px; border-radius: 3px; background: var(--info); box-shadow: 0 0 12px color-mix(in srgb, var(--info) 45%, transparent); }
.sammy-source:nth-child(2) i { background: var(--accent); box-shadow: 0 0 12px color-mix(in srgb, var(--accent) 45%, transparent); }
.sammy-source:nth-child(3) i { background: var(--pass); box-shadow: 0 0 12px color-mix(in srgb, var(--pass) 45%, transparent); }
.sammy-flow-link { position: relative; z-index: 1; display: grid; place-items: center; height: 38px; color: var(--faint); font: .58rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.sammy-flow-link::before { content: ""; position: absolute; top: 0; bottom: 0; left: 50%; width: 1px; background: linear-gradient(var(--info), var(--accent)); }
.sammy-flow-link::after { content: ""; position: absolute; left: calc(50% - 3px); top: 4px; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); animation: sammyTravel 2.3s ease-in-out infinite; }
.sammy-flow-link span { position: relative; padding: 2px 7px; background: var(--bg); }
.sammy-minimum { position: relative; z-index: 1; padding: 12px; border: 1px solid color-mix(in srgb, var(--pass) 35%, var(--border)); border-radius: 11px; background: color-mix(in srgb, var(--pass) 6%, var(--surface)); }
.sammy-minimum-head { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.sammy-minimum-head span { color: var(--pass); font: .63rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.sammy-minimum-head b { font-size: .77rem; }
.sammy-pillar-row { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 9px; }
.sammy-pillar-row i { padding: 3px 6px; border: 1px solid var(--border); border-radius: 5px; color: var(--muted); font: normal .57rem var(--mono); }
.sammy-routes { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 9px; }
.sammy-route { position: relative; padding: 9px 10px 10px; }
.sammy-route::after { content: ""; position: absolute; left: 10px; right: 10px; bottom: 7px; height: 2px; border-radius: 2px; background: linear-gradient(90deg, var(--accent), transparent); transform-origin: left; animation: sammyRoute 3.2s ease-in-out infinite; }
.sammy-route:nth-child(2)::after { background: linear-gradient(90deg, var(--info), transparent); animation-delay: .5s; }
.sammy-route:nth-child(3)::after { background: linear-gradient(90deg, var(--warn), transparent); animation-delay: 1s; }
.sammy-review { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr auto 1fr; gap: 8px; align-items: center; margin-top: 9px; }
.sammy-review-node { padding: 10px 11px; }
.sammy-review-node.reviewer { border-color: color-mix(in srgb, var(--info) 42%, var(--border)); }
.sammy-review-node.validator { border-color: color-mix(in srgb, var(--pass) 42%, var(--border)); }
.sammy-review-arrow { color: var(--accent); font: 1rem var(--mono); animation: sammyArrow 1.8s ease-in-out infinite; }
.sammy-map-foot { margin-top: 11px; padding: 10px 12px; border: 1px solid color-mix(in srgb, var(--accent) 46%, var(--border)); border-radius: 10px; background: color-mix(in srgb, var(--accent) 8%, var(--surface)); }
.sammy-map-foot span { color: var(--accent); font: .62rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.sammy-map-foot b { font-size: .8rem; }

.sammy-mode-section {
  position: relative;
  overflow: hidden;
  border-block: 1px solid color-mix(in srgb, var(--accent) 34%, var(--border));
  background:
    radial-gradient(720px 380px at 12% 20%, color-mix(in srgb, var(--accent) 13%, transparent), transparent 66%),
    radial-gradient(620px 360px at 88% 72%, color-mix(in srgb, var(--info) 10%, transparent), transparent 68%),
    linear-gradient(180deg, color-mix(in srgb, var(--bg-2) 94%, black), var(--bg));
}
.sammy-mode-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(90deg, black, transparent 78%);
}
.sammy-mode-highlight {
  position: relative;
  z-index: 1;
  overflow: hidden;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid color-mix(in srgb, var(--accent) 52%, var(--border));
  border-radius: 22px;
  background: linear-gradient(145deg, color-mix(in srgb, var(--surface) 94%, var(--accent) 6%), color-mix(in srgb, var(--surface) 96%, black));
  box-shadow: 0 34px 90px -55px var(--accent), inset 0 1px color-mix(in srgb, white 8%, transparent);
}
.sammy-mode-highlight::after {
  content: "";
  position: absolute;
  top: -170px;
  right: -140px;
  width: 360px;
  height: 360px;
  border: 1px solid color-mix(in srgb, var(--info) 25%, transparent);
  border-radius: 50%;
  box-shadow: 0 0 0 45px color-mix(in srgb, var(--info) 2.5%, transparent), 0 0 0 90px color-mix(in srgb, var(--accent) 2.2%, transparent);
  pointer-events: none;
}
.sammy-mode-hero {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: clamp(24px, 4vw, 52px);
  align-items: center;
  margin-bottom: 30px;
}
.sammy-mode-number {
  position: relative;
  display: grid;
  place-items: center;
  width: 172px;
  aspect-ratio: 1;
  border: 1px solid color-mix(in srgb, var(--accent) 58%, var(--border));
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 14%, var(--surface)) 0 44%, transparent 45%);
  box-shadow: 0 0 52px color-mix(in srgb, var(--accent) 14%, transparent), inset 0 0 35px color-mix(in srgb, var(--accent) 8%, transparent);
}
.sammy-mode-number::before, .sammy-mode-number::after {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px dashed color-mix(in srgb, var(--info) 38%, transparent);
  border-radius: 50%;
  animation: sammyOrbit 14s linear infinite;
}
.sammy-mode-number::after { inset: 31px; border-style: solid; border-color: color-mix(in srgb, var(--pass) 27%, transparent); animation-direction: reverse; animation-duration: 10s; }
.sammy-mode-number span { position: relative; z-index: 1; margin-top: -13px; font-size: clamp(4.9rem, 9vw, 7.7rem); font-weight: 800; line-height: 1; letter-spacing: -.09em; color: var(--accent); text-shadow: 0 0 30px color-mix(in srgb, var(--accent) 26%, transparent); }
.sammy-mode-number b { position: absolute; z-index: 1; bottom: 32px; font: .58rem var(--mono); letter-spacing: .11em; text-transform: uppercase; }
.sammy-mode-number i { position: absolute; z-index: 2; top: 10px; left: 50%; width: 8px; height: 8px; border-radius: 50%; background: var(--info); box-shadow: 0 0 13px var(--info); animation: sammyPulse 1.8s ease-in-out infinite; }
.sammy-trust-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 14px; }
.sammy-trust-strip div { display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: center; padding: 13px 15px; border: 1px solid var(--border); border-radius: 10px; background: color-mix(in srgb, var(--bg-2) 90%, transparent); }
.sammy-trust-strip b { color: var(--pass); font: 1.65rem/1 var(--mono); }
.sammy-trust-strip div:last-child b { color: var(--accent); }
.sammy-trust-strip span { color: var(--muted); font: .65rem/1.35 var(--mono); letter-spacing: .04em; text-transform: uppercase; }

.sammy-routing {
  display: grid;
  grid-template-columns: minmax(170px, .9fr) 54px minmax(210px, 1.1fr);
  gap: 12px;
  align-items: center;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(145deg, var(--surface), color-mix(in srgb, var(--surface) 94%, black));
}
.sammy-mode-stack, .sammy-check-stack { display: grid; gap: 8px; }
.sammy-mode, .sammy-check { padding: 11px 12px; border: 1px solid var(--border); border-radius: 9px; background: var(--bg-2); }
.sammy-mode { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.sammy-mode > div { min-width: 0; }
.sammy-mode b, .sammy-check b { display: block; margin-top: 5px; font-size: .8rem; line-height: 1.3; }
.sammy-mode span, .sammy-check span { display: block; color: var(--faint); font: .59rem/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.sammy-mode i { width: 36px; height: 4px; border-radius: 4px; background: var(--accent); box-shadow: 0 0 12px color-mix(in srgb, var(--accent) 45%, transparent); }
.sammy-mode.deep i { background: var(--info); box-shadow: 0 0 12px color-mix(in srgb, var(--info) 45%, transparent); }
.sammy-mode.specialist i { background: var(--warn); box-shadow: 0 0 12px color-mix(in srgb, var(--warn) 45%, transparent); }
.sammy-route-bus { position: relative; height: 150px; }
.sammy-route-bus::before { content: ""; position: absolute; left: 0; right: 9px; top: 50%; height: 1px; background: linear-gradient(90deg, var(--accent), var(--info), var(--pass)); }
.sammy-route-bus::after { content: "›"; position: absolute; right: 0; top: calc(50% - 13px); color: var(--pass); font: 1.25rem var(--mono); animation: sammyArrow 1.8s ease-in-out infinite; }
.sammy-route-bus i { position: absolute; right: 7px; top: calc(50% - 3px); width: 6px; height: 6px; border-radius: 50%; background: var(--pass); box-shadow: 0 0 12px var(--pass); }
.sammy-check { position: relative; padding-left: 30px; }
.sammy-check::before { content: ""; position: absolute; left: 12px; top: 15px; width: 7px; height: 7px; border-radius: 50%; background: var(--info); box-shadow: 0 0 10px color-mix(in srgb, var(--info) 60%, transparent); }
.sammy-check:last-child::before { background: var(--pass); box-shadow: 0 0 10px color-mix(in srgb, var(--pass) 60%, transparent); }

.sammy-boundary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(170px, .55fr) minmax(0, 1fr);
  gap: 16px;
  align-items: stretch;
  margin-top: 20px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
}
.sammy-boundary-side { padding: 16px; border: 1px solid var(--border); border-radius: 11px; background: var(--bg-2); }
.sammy-boundary-side span { color: var(--faint); font: .62rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.sammy-boundary-side h3 { margin-top: 7px; }
.sammy-boundary-side p { margin-top: 8px; color: var(--muted); font-size: .82rem; }
.sammy-boundary-side.local { border-color: color-mix(in srgb, var(--pass) 36%, var(--border)); }
.sammy-boundary-side.cloud { border-color: color-mix(in srgb, var(--info) 36%, var(--border)); }
.sammy-boundary-flow { display: grid; align-content: center; gap: 16px; }
.sammy-boundary-arrow { position: relative; padding-block: 10px; text-align: center; color: var(--faint); font: .57rem var(--mono); letter-spacing: .05em; text-transform: uppercase; }
.sammy-boundary-arrow::after { content: "→"; display: block; margin-top: 4px; color: var(--info); font-size: 1.1rem; animation: sammyArrow 1.8s ease-in-out infinite; }
.sammy-boundary-arrow.back::after { content: "←"; color: var(--accent); animation-delay: .6s; }

.sammy-learning-section {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(560px 320px at 50% 50%, color-mix(in srgb, var(--pass) 8%, transparent), transparent 72%),
    linear-gradient(180deg, var(--bg), color-mix(in srgb, var(--bg-2) 92%, black));
}
.sammy-learning-section::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--pass) 4%, transparent), transparent);
}
.sammy-learning-loop {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 34px;
  margin-top: 36px;
}
.sammy-learning-node {
  position: relative;
  min-height: 188px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(145deg, color-mix(in srgb, var(--surface) 96%, white), color-mix(in srgb, var(--surface) 96%, black));
  box-shadow: 0 22px 48px -42px #000;
}
.sammy-learning-node:not(:last-child)::after {
  content: "→";
  position: absolute;
  top: calc(50% - 15px);
  left: calc(100% + 8px);
  width: 20px;
  color: var(--pass);
  font: 1.25rem var(--mono);
  text-align: center;
  animation: sammyArrow 1.8s ease-in-out infinite;
}
.sammy-learning-node .n {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid color-mix(in srgb, var(--pass) 50%, var(--border));
  border-radius: 50%;
  color: var(--pass);
  background: color-mix(in srgb, var(--pass) 8%, var(--surface));
  font: .72rem var(--mono);
  box-shadow: 0 0 18px color-mix(in srgb, var(--pass) 10%, transparent);
}
.sammy-learning-node:nth-child(2) .n { color: var(--info); border-color: color-mix(in srgb, var(--info) 50%, var(--border)); background: color-mix(in srgb, var(--info) 8%, var(--surface)); }
.sammy-learning-node:nth-child(3) .n { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 50%, var(--border)); background: color-mix(in srgb, var(--accent) 8%, var(--surface)); }
.sammy-learning-node:nth-child(4) .n { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 50%, var(--border)); background: color-mix(in srgb, var(--warn) 8%, var(--surface)); }
.sammy-learning-node:nth-child(5) { border-color: color-mix(in srgb, var(--pass) 42%, var(--border)); }
.sammy-learning-node h3 { margin-top: 16px; font-size: 1rem; }
.sammy-learning-node p { margin-top: 8px; color: var(--muted); font-size: .78rem; }
.sammy-learning-node code { display: inline-block; margin-top: 12px; color: var(--faint); font: .61rem var(--mono); }
.sammy-learning-lineage {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: center;
  margin-top: 18px;
  padding: 15px 18px;
  border: 1px solid color-mix(in srgb, var(--info) 34%, var(--border));
  border-radius: 11px;
  background: color-mix(in srgb, var(--info) 5%, var(--surface));
}
.sammy-learning-lineage b { color: var(--info); font: .66rem var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.sammy-learning-lineage span { color: var(--muted); font: .7rem/1.55 var(--mono); }
.sammy-learning-guardrails { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 18px; }
.sammy-learning-guardrails article { padding: 17px; border: 1px solid var(--border); border-radius: 11px; background: color-mix(in srgb, var(--surface) 92%, transparent); }
.sammy-learning-guardrails span { color: var(--accent); font: .62rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.sammy-learning-guardrails h3 { margin-top: 8px; font-size: .95rem; }
.sammy-learning-guardrails p { margin-top: 7px; color: var(--muted); font-size: .8rem; }

@keyframes sammyPulse { 50% { opacity: .42; transform: scale(.72); } }
@keyframes sammyTravel { 0% { transform: translateY(0); } 50% { transform: translateY(22px); } 100% { transform: translateY(0); } }
@keyframes sammyRoute { 0%, 100% { transform: scaleX(.22); opacity: .45; } 50% { transform: scaleX(1); opacity: 1; } }
@keyframes sammyArrow { 50% { transform: translateX(4px); text-shadow: 0 0 12px currentColor; } }
@keyframes sammyOrbit { to { transform: rotate(360deg); } }

.section { padding: 78px 0; }
.section.alt { border-block: 1px solid var(--border); background:linear-gradient(180deg,color-mix(in srgb,var(--bg-2) 88%,transparent),color-mix(in srgb,var(--bg) 95%,black)); }
.section-head { max-width: 66ch; }
.section-head h2 { margin-top: 10px; }
.section-head p { margin-top: 14px; color: var(--muted); font-size: 1.05rem; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 34px; }
.feature { position:relative; overflow:hidden; min-height:180px; padding: 21px; border: 1px solid var(--border); border-radius: 14px; background:linear-gradient(145deg,color-mix(in srgb,var(--surface) 95%,white),var(--surface)); transition:transform .22s,border-color .22s,box-shadow .22s; }
.feature::after { content:""; position:absolute; width:100px; height:100px; right:-52px; top:-52px; border:1px solid color-mix(in srgb,var(--accent) 24%,transparent); border-radius:50%; box-shadow:0 0 0 18px color-mix(in srgb,var(--accent) 2.5%,transparent); }
.feature:hover { transform:translateY(-5px); border-color:color-mix(in srgb,var(--accent) 40%,var(--border)); box-shadow:0 22px 55px -42px var(--accent); }
.feature .index { color: var(--accent); font: .7rem var(--mono); }
.feature h3 { margin-top: 12px; }
.feature p { margin-top: 8px; color: var(--muted); font-size: .9rem; }
.feature a { display: inline-block; margin-top: 14px; color: var(--accent); font: .78rem var(--mono); }

.demo-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(300px, .75fr); gap: 26px; margin-top: 34px; align-items: start; }
.demo-frame { position:relative; overflow: hidden; border: 1px solid color-mix(in srgb,var(--accent) 24%,var(--border)); border-radius: 16px; background: #090d11; box-shadow:0 30px 75px -42px #000; }
.demo-frame video { display: block; width: 100%; aspect-ratio: 16 / 9; background: #090d11; object-fit: contain; }
.demo-frame > img { display:block; width:100%; aspect-ratio:16/9; object-fit:cover; object-position:top left; }
.demo-pair { display:grid; grid-template-columns:1fr 1fr; gap:18px; margin-top:34px; }
.demo-pair .demo-frame video { aspect-ratio:16/10; object-fit:contain; }
.demo-pair-copy { padding:15px 17px; border-top:1px solid var(--border); }
.demo-pair-copy b { display:block; }
.demo-pair-copy span { display:block; margin-top:4px; color:var(--muted); font-size:.82rem; }
.demo-status { display: flex; align-items: center; gap: 8px; padding: 10px 13px; border-top: 1px solid var(--border); color: var(--muted); font: .74rem var(--mono); }
.demo-status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--warn); }
.demo-copy { display: grid; gap: 14px; }
.demo-copy .card { padding: 18px; }
.card { border: 1px solid var(--border); border-radius: 13px; background: var(--surface); }
.card h3 + p { margin-top: 8px; color: var(--muted); font-size: .9rem; }
details.transcript { border: 1px solid var(--border); border-radius: 11px; background: var(--surface); }
details.transcript summary { padding: 13px 15px; cursor: pointer; font-weight: 700; }
details.transcript div { padding: 0 15px 15px; color: var(--muted); font-size: .88rem; }
details.transcript code { color: var(--ink); font-family: var(--mono); }

.shot-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(280px, .9fr); gap: 28px; margin-top: 34px; align-items: center; }
.shot { width: 100%; border: 1px solid var(--border); border-radius: 14px; box-shadow: var(--shadow); }
.report-gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 34px; }
.report-sample { overflow: hidden; margin: 0; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); box-shadow: var(--shadow); }
.report-sample--wide { grid-column: 1 / -1; }
.report-sample img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: contain; background: #eef1f4; }
.report-sample--wide img { aspect-ratio: 2.05 / 1; }
.report-sample figcaption { padding: 14px 16px 16px; color: var(--muted); font-size: .86rem; }
.report-sample figcaption strong { display: block; margin-bottom: 4px; color: var(--ink); }
.evidence-note { margin-top: 18px; color: var(--faint); font-size: .78rem; }
.flow-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 34px; }
.attack-flow { padding: 22px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); }
.attack-flow ol { margin: 16px 0 0; padding-left: 20px; color: var(--muted); font-size: .88rem; }
.attack-flow li + li { margin-top: 8px; }
.attack-flow .flow-label { color: var(--accent); font: .7rem var(--mono); letter-spacing: .08em; }
.cli-report { margin-top: 22px; }
.report-card { padding: 22px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); }
.metric-row { display: grid; grid-template-columns: 120px 1fr auto; gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--border); font-size: .84rem; }
.metric-row:last-child { border-bottom: 0; }
.bar { height: 7px; overflow: hidden; border-radius: 6px; background: var(--surface-2); }
.bar i { display: block; height: 100%; border-radius: inherit; background: var(--accent); }
.callout { margin-top: 18px; padding: 14px 16px; border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--border)); border-radius: 10px; background: var(--accent-soft); color: var(--muted); font-size: .86rem; }
.callout b { color: var(--ink); }

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 30px; }
.step { position:relative; overflow:hidden; padding: 18px; border: 1px solid var(--border); border-radius: 12px; background:linear-gradient(145deg,var(--surface),color-mix(in srgb,var(--surface) 96%,black)); animation:productStep 8s ease-in-out infinite; }
.step:nth-child(2){animation-delay:1.2s}.step:nth-child(3){animation-delay:2.4s}.step:nth-child(4){animation-delay:3.6s}
.step .n { color: var(--accent); font: .7rem var(--mono); }
.step h3 { margin-top: 9px; font-size: 1rem; }
.step p { margin-top: 6px; color: var(--muted); font-size: .82rem; }
.code-block { overflow-x: auto; margin-top: 28px; padding: 18px 20px; border: 1px solid var(--border); border-radius: 12px; background: #090d11; color: #c2d0d9; font: .8rem/1.7 var(--mono); }

.privacy-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 30px; }
.privacy-card { padding: 20px; border: 1px solid var(--border); border-radius: 13px; background: var(--surface); }
.privacy-card h3 { color: var(--pass); }
.privacy-card:last-child h3 { color: var(--info); }
.privacy-card ul { margin: 13px 0 0; padding-left: 20px; color: var(--muted); font-size: .9rem; }
.privacy-card li + li { margin-top: 6px; }

.crosslinks { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 30px; }
.crosslink { padding: 17px; border: 1px solid var(--border); border-radius: 11px; background: var(--surface); }
.crosslink span { display: block; margin-bottom: 6px; color: var(--accent); font: .68rem var(--mono); }
.crosslink:hover { border-color: var(--accent); }
.final { text-align: center; }
.final p { margin: 14px auto 0; max-width: 60ch; color: var(--muted); }
.final .cta-row { justify-content: center; }

.legal { padding: 38px 0; border-top: 1px solid var(--border); background: var(--bg-2); }
.legal p { max-width: 100ch; color: var(--faint); font-size: .76rem; }
.footer { padding: 28px 0; border-top: 1px solid var(--border); color: var(--muted); font-size: .8rem; }
.footer .wrap { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
.footer a:hover { color: var(--ink); }

@media (max-width: 900px) {
  .nav { display: none; }
  .mobile-menu { display: block; }
  .hero-grid, .demo-grid, .shot-grid { grid-template-columns: 1fr; }
  .feature-grid, .crosslinks, .flow-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .hero { padding-top: 60px; }
  .sammy-learning-loop { grid-template-columns: 1fr; gap: 34px; }
  .sammy-learning-node { min-height: auto; }
  .sammy-learning-node:not(:last-child)::after { content: "↓"; top: auto; bottom: -30px; left: calc(50% - 10px); }
}

@media (max-width: 980px) {
  .nav-cta { display: none; }
}

@media (max-width: 620px) {
  .wrap { width: min(100% - 30px, var(--max)); }
  .topbar .btn { display: none; }
  .feature-grid, .crosslinks, .steps, .privacy-grid, .flow-grid, .report-gallery { grid-template-columns: 1fr; }
  .report-sample--wide { grid-column: auto; }
  .terminal pre { min-height: 240px; padding: 15px; font-size: .72rem; }
  .metric-row { grid-template-columns: 96px 1fr auto; }
  .sammy-sources, .sammy-routes { grid-template-columns: 1fr; }
  .sammy-review { grid-template-columns: 1fr; }
  .sammy-review-arrow { justify-self: center; animation: none; transform: rotate(90deg); }
  .sammy-mode-hero { grid-template-columns: 1fr; }
  .sammy-mode-number { width: 145px; }
  .sammy-trust-strip, .sammy-learning-guardrails { grid-template-columns: 1fr; }
  .sammy-routing, .sammy-boundary { grid-template-columns: 1fr; }
  .sammy-route-bus { height: 42px; }
  .sammy-route-bus::before { top: 50%; }
  .sammy-boundary-flow { grid-template-columns: 1fr 1fr; }
  .sammy-boundary-arrow::after { content: "↓"; }
  .sammy-boundary-arrow.back::after { content: "↑"; }
  .sammy-learning-loop { grid-template-columns: 1fr; gap: 34px; }
  .sammy-learning-node { min-height: auto; }
  .sammy-learning-node:not(:last-child)::after { content: "↓"; top: auto; bottom: -30px; left: calc(50% - 10px); }
  .sammy-learning-lineage { grid-template-columns: 1fr; gap: 6px; }
}
@media (max-width:700px){.demo-pair{grid-template-columns:1fr}}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}
@keyframes productSweep { to { left:115%; } }
@keyframes productStep { 0%,16%,100% { transform:translateY(0); border-color:var(--border); } 8% { transform:translateY(-3px); border-color:color-mix(in srgb,var(--accent) 48%,var(--border)); } }
@media (prefers-reduced-motion:reduce){.terminal::after,.step{animation:none}}