@import url("https://fonts.googleapis.com/css2?family=Bebas+Neue&display=swap");

:root {
  --bg: #000000;
  --fg: #f5f5f2;
  --muted: #bcbcb5;
  --soft: #8c8c84;
  --line: rgba(255, 255, 255, 0.11);
  --line-strong: rgba(255, 255, 255, 0.2);
  --panel: rgba(255, 255, 255, 0.028);
  --panel-strong: rgba(255, 255, 255, 0.05);
}

* {
  box-sizing: border-box;
}

html {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--fg);
  background:
    radial-gradient(920px 460px at 18% 0%, rgba(255, 255, 255, 0.055), transparent 64%),
    radial-gradient(780px 520px at 82% 12%, rgba(255, 255, 255, 0.03), transparent 62%),
    linear-gradient(180deg, #070707 0%, #000000 100%);
  font-family: Arial, Helvetica, sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-menu {
  position: sticky;
  top: 12px;
  z-index: 30;
  display: flex;
  justify-content: center;
  padding: 10px 12px 0;
}

.nav-wrap,
.main-wrap,
.footer-wrap {
  width: min(1120px, calc(100% - 80px));
  margin: 0 auto;
}

.nav-wrap {
  max-width: 100%;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  padding: 0;
  background: transparent;
}

.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--fg);
}

.nav-links a,
.footer-links,
small,
.eyebrow,
.metric-label,
.step-no,
.form label,
.btn,
h1,
h2,
h3 {
  font-family: "Bebas Neue", "Arial Narrow", Arial, sans-serif;
  text-transform: uppercase;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  color: var(--soft);
  font-size: 18px;
  letter-spacing: 0.1em;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.footer-links a:hover {
  color: var(--fg);
}

.main-wrap {
  padding: 12px 0 110px;
}

.hero {
  min-height: auto;
  display: grid;
  justify-items: center;
  align-items: start;
  gap: 18px;
  padding: 24px 0 72px;
  text-align: center;
}

.hero-brand {
  margin-bottom: 10px;
}

.logo-lg {
  width: min(300px, 48vw);
  height: auto;
  display: block;
}

.eyebrow,
.metric-label,
.step-no,
small,
.form label {
  color: var(--soft);
  letter-spacing: 0.14em;
}

.eyebrow {
  margin: 0;
  font-size: 16px;
}

.hero-copy {
  display: grid;
  gap: 22px;
  justify-items: center;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 600;
  line-height: 1;
}

h1 {
  font-size: clamp(2.7rem, 5vw, 4.7rem);
  letter-spacing: 0.06em;
}

h2 {
  font-size: clamp(1.45rem, 2.2vw, 2rem);
  letter-spacing: 0.12em;
}

h3 {
  font-size: 1.08rem;
  letter-spacing: 0.12em;
}

.lead {
  margin: 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.8;
}

.lead-hero {
  font-size: 1.2rem;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--fg);
  font-size: 14px;
  letter-spacing: 0.16em;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
  background: var(--fg);
  color: #000;
}

.btn-muted {
  color: var(--soft);
  border-color: var(--line);
}

.btn-muted:hover {
  color: var(--fg);
  background: rgba(255, 255, 255, 0.06);
}

.grid {
  display: grid;
  gap: 56px;
}

.section {
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.section-index {
  display: none;
  margin: 0 0 12px;
  color: var(--soft);
  font-family: "Bebas Neue", "Arial Narrow", Arial, sans-serif;
  letter-spacing: 0.14em;
}

.section-head,
.copy-stack,
.provider-copy,
.architecture-copy {
  display: grid;
  gap: 18px;
}

.section-lead,
.section p,
.section li,
.metric-card p,
.step-card p,
.trust-card p,
.mini-block p,
.spec-panel p,
.form-message {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.section strong {
  color: var(--fg);
  font-weight: 400;
  font-family: "Bebas Neue", "Arial Narrow", Arial, sans-serif;
  letter-spacing: 0.06em;
}

.metrics-band,
.split-band,
.spec-band,
.provider-band {
  display: grid;
  gap: 24px;
  align-items: start;
}

.steps-band {
  display: grid;
  gap: 32px;
}

.metrics-band {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 0;
  padding-top: 0;
  margin-bottom: 24px;
}

.metric-card,
.step-card,
.trust-card,
.mini-block,
.spec-panel,
.form {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
}

.metric-card,
.step-card,
.trust-card,
.spec-panel,
.mini-block {
  display: grid;
  gap: 14px;
}

.metric-label,
.step-no {
  margin: 0;
  font-size: 14px;
}

.split-band {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.steps-grid,
.trust-grid,
.mini-grid {
  display: grid;
  gap: 22px;
  align-items: start;
}

.steps-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.trust-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.architecture-band {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.88fr);
  gap: 24px;
  align-items: start;
}

.mini-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.architecture-visual {
  display: flex;
  justify-content: flex-end;
  align-items: flex-start;
}

.diagram {
  width: min(460px, 100%);
  display: block;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
}

.trust-band .compact-head {
  margin-bottom: 10px;
}

.spec-band {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.detail-grid {
  display: grid;
  gap: 10px;
  align-items: start;
}

.provider-band {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.provider-note {
  color: var(--soft);
}

.provider-form-wrap {
  width: 100%;
  max-width: none;
  justify-self: stretch;
}

.form {
  display: grid;
  gap: 16px;
  align-content: start;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.015)),
    var(--panel);
}

.form h3 {
  margin-bottom: 6px;
}

.form label {
  display: grid;
  gap: 6px;
  margin: 0;
  font-size: 12px;
}

.form input,
.form textarea {
  display: block;
  width: 100%;
  padding: 13px 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.62);
  color: var(--fg);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: normal;
  text-transform: none;
}

.form .btn {
  justify-self: start;
  margin-top: 4px;
}

.form input:focus,
.form textarea:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.38);
}

.form-message {
  min-height: 2em;
}

.list {
  margin: 0;
  padding-left: 18px;
}

.compact li {
  margin-bottom: 8px;
}

.bottom-grid {
  grid-template-columns: 1fr 1.2fr 0.9fr;
}

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

.footer-wrap {
  display: grid;
  justify-items: center;
  gap: 18px;
  padding: 42px 0 34px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  color: var(--soft);
  font-size: 18px;
  letter-spacing: 0.14em;
}

small {
  font-size: 13px;
}

@media (max-width: 980px) {
  .metrics-band,
  .split-band,
  .steps-grid,
  .trust-grid,
  .architecture-band,
  .spec-band,
  .provider-band,
  .mini-grid,
  .bottom-grid {
    grid-template-columns: 1fr;
  }

  .architecture-visual {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .nav-wrap,
  .main-wrap,
  .footer-wrap {
    width: min(1120px, calc(100% - 34px));
  }

  .site-menu {
    top: 8px;
    padding-top: 8px;
  }

  .nav-wrap {
    position: relative;
    justify-content: center;
  }

  .menu-toggle {
    display: inline-block;
  }

  .nav-links {
    display: none;
    position: absolute;
    left: 50%;
    top: 56px;
    transform: translateX(-50%);
    min-width: 220px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 10px;
    border-radius: 18px;
    background: rgba(0, 0, 0, 0.92);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.38);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    justify-content: center;
    min-height: 40px;
    font-size: 16px;
  }

  .main-wrap {
    padding-top: 26px;
    padding-bottom: 82px;
  }

  .hero {
    min-height: auto;
    gap: 24px;
    padding-top: 12px;
    padding-bottom: 42px;
  }

  .logo-lg {
    width: min(220px, 58vw);
  }

  h1 {
    font-size: clamp(2.2rem, 12vw, 3.2rem);
  }
}