@font-face {
  font-family: "Panama Mono";
  src: url("/assets/fonts/PanamaMonospace-Regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

:root {
  --bg: #050505;
  --bg-soft: rgba(255, 255, 255, 0.04);
  --bg-strong: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(255, 255, 255, 0.2);
  --text: #ffffff;
  --muted: rgba(255, 255, 255, 0.72);
  --muted-strong: rgba(255, 255, 255, 0.88);
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
  --radius: 28px;
  --radius-sm: 18px;
  --container: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.08), transparent 28%),
    radial-gradient(circle at bottom left, rgba(255, 255, 255, 0.05), transparent 30%),
    linear-gradient(180deg, #0a0a0a 0%, #050505 100%);
  color: var(--text);
  font: 400 16px/1.6 "Panama Mono", "SFMono-Regular", Consolas, monospace;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 85%);
}

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

img {
  display: block;
  max-width: 100%;
}

.site-shell {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
  padding: 20px 0 64px;
}

.topbar,
.hero,
.grid-section,
.split-section,
.notice,
.footer {
  position: relative;
  z-index: 1;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(8, 8, 8, 0.82);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.topnav {
  display: inline-flex;
  gap: 18px;
  color: var(--muted);
  font-size: 13px;
  align-items: center;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.topnav::-webkit-scrollbar {
  display: none;
}

.topnav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: 999px;
  white-space: nowrap;
}

.topnav a:hover {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.05);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 32px;
  padding: 48px 0 32px;
  align-items: stretch;
}

.hero-copy,
.hero-stage,
.info-card,
.notice {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.02));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: clamp(28px, 4vw, 52px);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  max-width: 12ch;
  font-size: clamp(36px, 7vw, 74px);
  line-height: 0.96;
  letter-spacing: -0.04em;
}

h2 {
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

h3 {
  font-size: 22px;
  line-height: 1.1;
}

.hero-text,
.hero-note,
.info-card p,
.notice p {
  color: var(--muted);
}

.inline-link {
  color: var(--text);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.inline-link:hover {
  color: var(--muted-strong);
}

.hero-text {
  max-width: 48ch;
  margin-top: 24px;
  font-size: 17px;
}

.hero-actions,
.hero-actions-secondary,
.cta-stack,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-actions {
  margin-top: 30px;
}

.hero-actions-secondary {
  margin-top: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  font: inherit;
  cursor: pointer;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: #ffffff;
  color: #050505;
}

.button-secondary,
.button-ghost {
  background: transparent;
  color: var(--text);
}

.button-secondary:hover,
.button-ghost:hover {
  background: rgba(255, 255, 255, 0.06);
}

.hero-note {
  margin-top: 18px;
  max-width: 45ch;
  font-size: 14px;
}

.hero-stage {
  overflow: hidden;
  padding: 22px;
  display: flex;
  align-items: stretch;
}

.device-card {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: calc(var(--radius) - 6px);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.08), transparent 22%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
  min-height: 100%;
}

.device-card-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.device-card-body {
  padding: 26px 22px 22px;
  display: grid;
  gap: 16px;
}

.device-flow {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  align-items: start;
  padding: 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.04);
}

.device-flow span,
.card-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--muted-strong);
}

.grid-section,
.split-section {
  padding-top: 48px;
}

.section-heading {
  margin-bottom: 24px;
  max-width: 70ch;
}

.cards {
  display: grid;
  gap: 18px;
}

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

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

.info-card {
  padding: 24px;
}

.info-card h3 {
  margin-top: 22px;
}

.info-card p {
  margin-top: 12px;
}

.feature-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  color: var(--muted);
}

.feature-list li {
  position: relative;
  padding-left: 18px;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 1px;
  background: rgba(255, 255, 255, 0.75);
}

.info-card-large {
  min-height: 100%;
}

.qr-grid {
  margin-top: 18px;
}

.qr-card {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) 220px;
  gap: 20px;
  align-items: center;
}

.qr-card-copy h3 {
  margin-top: 0;
}

.qr-frame {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  border-radius: 22px;
  background: #ffffff;
}

.qr-frame img {
  width: 100%;
  max-width: 188px;
  height: auto;
}

.cta-stack {
  margin-top: 24px;
}

.notice {
  margin-top: 48px;
  padding: 28px;
}

.notice p {
  max-width: 58ch;
  font-size: 18px;
}

.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  margin-top: 28px;
  padding: 0 4px;
  color: var(--muted);
  font-size: 13px;
}

.footer-links {
  align-items: center;
}

@media (max-width: 1080px) {
  .hero,
  .three-up,
  .two-up,
  .split-grid {
    grid-template-columns: 1fr;
  }

  .hero-stage {
    min-height: 380px;
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(calc(100% - 20px), var(--container));
    padding-top: 10px;
    padding-bottom: 40px;
  }

  .topbar,
  .footer {
    flex-direction: column;
    align-items: stretch;
  }

  .topbar {
    gap: 14px;
    padding: 14px;
    border-radius: 28px;
  }

  .brand {
    justify-content: center;
  }

  .topnav,
  .footer-links {
    justify-content: flex-start;
  }

  .topnav {
    width: calc(100% + 4px);
    padding-bottom: 2px;
    margin: 0 -2px;
    gap: 10px;
  }

  .topnav a {
    min-width: max-content;
    padding: 0 14px;
    border-color: var(--line);
    background: rgba(255, 255, 255, 0.04);
  }

  .hero-copy,
  .hero-stage,
  .info-card,
  .notice {
    border-radius: 24px;
  }

  .button {
    width: 100%;
  }

  .hero-actions,
  .hero-actions-secondary,
  .cta-stack {
    display: grid;
  }

  .qr-card {
    grid-template-columns: 1fr;
  }

  .qr-frame {
    max-width: 220px;
  }
}