:root {
  --navy: #101f29;
  --navy-2: #142632;
  --navy-3: #1a2f3c;
  --line: #27404f;
  --line-soft: rgba(120, 160, 180, 0.07);
  --cream: #f3efe8;
  --text: #c9d3d8;
  --muted: #7e939e;
  --amber: #e8a33d;
  --amber-2: #f2b75c;
  --radius: 10px;
  --wrap: 1180px;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "Cascadia Code", Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  background-color: var(--navy);
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 48px 48px;
  color: var(--text);
  font: 400 17px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: var(--amber); text-decoration: none; }
a:hover { color: var(--amber-2); }
h1, h2, h3 { color: var(--cream); line-height: 1.1; margin: 0 0 .5em; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
.mono { font-family: var(--mono); }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; border-radius: 4px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
@media (max-width: 600px) { .wrap { padding: 0 16px; } }

.skip { position: absolute; left: -999px; top: 8px; background: var(--amber); color: var(--navy); padding: 8px 14px; border-radius: 6px; z-index: 100; }
.skip:focus { left: 8px; }

/* ---------- Eyebrow ---------- */
.eyebrow {
  display: flex; align-items: center; gap: 14px;
  font: 500 .8rem/1 var(--mono); letter-spacing: .32em; text-transform: uppercase;
  color: var(--amber); margin-bottom: 22px;
}
.rule { width: 36px; height: 1px; background: var(--amber); flex: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 600 .95rem/1 var(--sans); color: var(--navy);
  background: var(--amber); border: 1px solid var(--amber);
  padding: 15px 24px; border-radius: 8px; cursor: pointer;
  transition: background .2s, transform .2s, color .2s;
}
.btn:hover { background: var(--amber-2); color: var(--navy); transform: translateY(-1px); }
.btn--ghost { background: transparent; color: var(--cream); border-color: var(--line); }
.btn--ghost:hover { background: var(--navy-3); color: var(--cream); border-color: var(--muted); }
.btn--sm { padding: 10px 16px; font-size: .88rem; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(16, 31, 41, .82);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent; transition: border-color .2s;
}
.nav.is-scrolled { border-bottom-color: var(--line); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--cream); font-weight: 800; font-size: 1.3rem; letter-spacing: -0.03em; }
.brand:hover { color: var(--cream); }
.brand b { color: var(--amber); }
.nav__menu { display: flex; align-items: center; gap: 32px; }
.nav__menu a:not(.btn) { color: var(--text); font-size: .95rem; font-weight: 500; }
.nav__menu a:not(.btn):hover { color: var(--cream); }
.nav__toggle { display: none; background: none; border: 0; width: 40px; height: 40px; cursor: pointer; padding: 10px; }
.nav__toggle span { display: block; height: 2px; background: var(--cream); margin: 5px 0; transition: transform .25s; }
.nav__toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav__toggle { display: block; }
  .nav__menu {
    position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--navy); border-bottom: 1px solid var(--line);
    padding: 8px 16px 20px; display: none;
  }
  .nav__menu.is-open { display: flex; }
  .nav__menu a:not(.btn) { padding: 14px 4px; border-bottom: 1px solid var(--line); }
  .nav__menu .btn { margin-top: 16px; }
}

/* ---------- Hero ---------- */
.hero { padding: 72px 0 96px; }
.hero__grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 64px; align-items: center; }
.hero h1 { font-size: clamp(2.5rem, 5.6vw, 4.6rem); font-weight: 800; letter-spacing: -0.035em; line-height: 1.02; }
.hero h1 em { font-style: normal; color: var(--amber); }
.hero__tags { color: var(--muted); font-size: .9rem; letter-spacing: .06em; margin-bottom: 28px; }
.lead { font-size: 1.2rem; color: var(--text); max-width: 34em; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 36px 0 44px; }
.hero__meta { display: flex; flex-wrap: wrap; gap: 12px 32px; list-style: none; padding: 0; margin: 0; color: var(--muted); font-size: .85rem; letter-spacing: .05em; }
.hero__meta li { display: flex; align-items: center; gap: 10px; }
.hero__meta li::before { content: ""; width: 7px; height: 7px; background: var(--amber); }

/* Blueprint diagram */
.blueprint {
  position: relative; margin: 0;
  border: 1px dashed var(--line); border-radius: 28px;
  padding: 36px 32px 36px 48px;
  display: flex; flex-direction: column; align-items: stretch;
}
.blueprint::before, .blueprint::after {
  content: ""; position: absolute; left: 50%; width: 14px; height: 1px; background: var(--amber);
}
.blueprint::before { top: 22%; left: -7px; }
.blueprint::after { bottom: 22%; left: auto; right: -7px; }
.blueprint__grain {
  position: absolute; left: 14px; top: 50%; transform: translate(-50%, -50%) rotate(-90deg); transform-origin: center;
  font-size: .62rem; letter-spacing: .35em; text-transform: uppercase; color: var(--muted); opacity: .7; margin-left: 10px;
}
.bp-row { display: grid; gap: 12px; }
.bp-row--2 { grid-template-columns: 1fr 1fr; }
.node {
  background: var(--navy-2); border: 1px solid var(--line); border-radius: 4px;
  padding: 12px 10px; text-align: center;
  transition: border-color .3s, transform .3s;
}
.node strong { display: block; color: var(--cream); font-weight: 500; font-size: .95rem; }
.node small { display: block; color: var(--muted); font-size: .78rem; margin-top: 2px; }
.node--hi { border-color: var(--amber); }
.node:hover { border-color: var(--amber-2); transform: translateY(-2px); }
.bp-link { display: flex; justify-content: center; height: 30px; }
.bp-link--2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.bp-link i { position: relative; justify-self: center; width: 1px; height: 100%; background: var(--line); }
.bp-link i::after {
  content: ""; position: absolute; bottom: 0; left: -3px; width: 7px; height: 7px;
  border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; color: var(--muted);
  transform: rotate(45deg) translate(-1px, -1px);
}
.bp-link--hi i { background: var(--amber); }
.bp-link--hi i::after { color: var(--amber); }
.bp-link i::before {
  content: ""; position: absolute; left: -2px; width: 5px; height: 5px; border-radius: 50%;
  background: var(--amber); top: -5px; opacity: 0; animation: flow 3.2s linear infinite;
}
.bp-link:nth-of-type(4) i::before { animation-delay: .8s; }
.bp-link:nth-of-type(6) i::before { animation-delay: 1.6s; }
.bp-link:nth-of-type(8) i::before { animation-delay: 2.4s; }
@keyframes flow { 0% { top: -5px; opacity: 0; } 15% { opacity: 1; } 85% { opacity: 1; } 100% { top: 100%; opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .bp-link i::before { animation: none; } html { scroll-behavior: auto; } }

@media (max-width: 960px) {
  .hero { padding: 48px 0 72px; }
  .hero__grid { grid-template-columns: 1fr; gap: 56px; }
  .blueprint { max-width: 460px; width: 100%; justify-self: center; }
}
@media (max-width: 420px) {
  .blueprint { padding: 24px 16px 24px 36px; }
  .node strong { font-size: .85rem; }
  .node small { font-size: .7rem; }
}

/* ---------- Sections ---------- */
.section { padding: 104px 0; border-top: 1px solid var(--line); }
.section--alt { background: rgba(20, 38, 50, .55); }
.section__head { max-width: 720px; margin-bottom: 56px; }
.sub { color: var(--muted); font-size: 1.08rem; }
@media (max-width: 600px) { .section { padding: 72px 0; } .section__head { margin-bottom: 40px; } }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.card { background: var(--navy); padding: 36px 32px; position: relative; transition: background .25s; }
.card:hover { background: var(--navy-2); }
.card::before { content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 0; background: var(--amber); transition: width .35s; }
.card:hover::before { width: 100%; }
.card__num { display: block; color: var(--amber); font-size: .8rem; margin-bottom: 28px; letter-spacing: .1em; }
.card p { color: var(--text); font-size: .98rem; }
.card ul { list-style: none; padding: 0; margin: 22px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.card li { font-size: .72rem; color: var(--muted); border: 1px solid var(--line); border-radius: 4px; padding: 4px 8px; }
@media (max-width: 960px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .cards { grid-template-columns: 1fr; } .card { padding: 28px 22px; } }

/* Product */
.product { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.surface {
  background: var(--navy); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 28px; transition: border-color .25s, transform .25s;
}
.surface:hover { border-color: var(--muted); transform: translateY(-2px); }
.surface--hi { border-color: var(--amber); }
.surface--hi:hover { border-color: var(--amber-2); }
.surface__tag { display: block; color: var(--amber); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 18px; }
.surface h3 { font-size: 1.35rem; margin-bottom: .3em; }
.surface > p { color: var(--muted); font-size: .98rem; margin-bottom: 4px; }
.ticks--sm { margin-top: 20px; gap: 10px; }
.ticks--sm li { font-size: .95rem; padding-left: 28px; color: var(--text); }
.ticks--sm li::before { width: 15px; height: 15px; top: .3em; background: radial-gradient(circle, var(--amber) 0 3px, transparent 3.5px); }
.surface { display: flex; flex-direction: column; }
.store {
  margin-top: auto; align-self: flex-start;
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--cream); background: #000; border: 1px solid var(--muted); border-radius: 8px;
  padding: 7px 14px 7px 12px; transition: border-color .2s, transform .2s;
}
.surface .ticks--sm { margin-bottom: 24px; }
.store:hover { color: var(--cream); border-color: var(--amber); transform: translateY(-1px); }
.store svg { width: 20px; height: 20px; flex: none; }
.store span { display: flex; flex-direction: column; font: 600 1rem/1.1 var(--sans); }
.store small { font: 500 .62rem/1.2 var(--sans); text-transform: uppercase; letter-spacing: .06em; color: var(--text); }
.product__foot { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px; margin-top: 32px; }
.product__foot .chips li { background: transparent; color: var(--text); font-size: .78rem; padding: 8px 12px; }
@media (max-width: 960px) { .product { grid-template-columns: 1fr; max-width: 640px; } }
@media (max-width: 560px) { .surface { padding: 26px 20px; } .product__foot .btn { width: 100%; } }

/* Steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.steps::before { content: ""; position: absolute; top: 7px; left: 0; right: 0; border-top: 1px dashed var(--line); }
.step { position: relative; padding-top: 40px; }
.step::before { content: ""; position: absolute; top: 0; left: 0; width: 15px; height: 15px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 6px var(--navy-2); }
.step__tag { display: block; color: var(--muted); font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 10px; }
.step h3 { font-size: 1.4rem; }
.step p { color: var(--text); font-size: .98rem; }
@media (max-width: 960px) {
  .steps { grid-template-columns: 1fr 1fr; gap: 40px 32px; }
  .steps::before { display: none; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; gap: 0; }
  .steps::before { display: block; top: 0; bottom: 0; left: 7px; right: auto; border-top: 0; border-left: 1px dashed var(--line); }
  .step { padding: 0 0 36px 44px; }
}

/* Chips */
.chips { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 12px; }
.chips li {
  border: 1px solid var(--line); background: var(--navy-2); color: var(--cream);
  padding: 10px 16px; border-radius: 6px; font-size: .85rem; transition: border-color .2s, color .2s;
}
.chips li:hover { border-color: var(--amber); color: var(--amber); }

/* About */
.about { display: grid; grid-template-columns: .9fr 1.1fr; gap: 64px; }
.about__body p { font-size: 1.08rem; }
.ticks { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 14px; }
.ticks li { position: relative; padding-left: 34px; color: var(--cream); }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: .35em; width: 18px; height: 18px; border-radius: 50%;
  border: 1px solid var(--amber);
  background: radial-gradient(circle, var(--amber) 0 3.5px, transparent 4px);
}
@media (max-width: 860px) { .about { grid-template-columns: 1fr; gap: 16px; } }

/* Contact */
.contact__grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 64px; align-items: start; }
.contact__details { margin: 36px 0 0; display: grid; gap: 18px; font-size: .9rem; }
.contact__details div { display: grid; grid-template-columns: 96px 1fr; gap: 12px; border-top: 1px solid var(--line); padding-top: 14px; }
.contact__details dt { color: var(--muted); text-transform: uppercase; letter-spacing: .14em; font-size: .72rem; padding-top: 3px; }
.contact__details dd { margin: 0; color: var(--cream); word-break: break-word; }

.form {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
  background: var(--navy-2); border: 1px solid var(--line); border-radius: 14px; padding: 36px;
}
.field { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.field--full { grid-column: 1 / -1; }
.field label { color: var(--cream); font-size: .88rem; font-weight: 500; }
.opt { color: var(--muted); font-weight: 400; }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; font-size: 1rem; color: var(--cream);
  background: var(--navy); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px;
  transition: border-color .2s;
}
.field textarea { resize: vertical; min-height: 130px; }
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 15px) 50%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 40px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--amber); }
.field.is-invalid input, .field.is-invalid textarea { border-color: #e06a5a; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.btn:disabled { opacity: .6; cursor: wait; transform: none; }
.form__foot { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; }
.form__status { margin: 0; font-size: .82rem; color: var(--muted); }
.form__status.is-error { color: #e98a7c; }
.form__status.is-ok { color: var(--amber); }
@media (max-width: 860px) { .contact__grid { grid-template-columns: 1fr; gap: 40px; } }
@media (max-width: 560px) { .form { grid-template-columns: 1fr; padding: 24px 18px; } .form .btn { width: 100%; } }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 36px 0; }
.footer__inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer__legal { margin: 0; color: var(--muted); font-size: .8rem; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }