/* Signage Remote -- marketing site */

:root {
  --color-bg: #080d14;
  --color-bg-alt: #0d1520;
  --color-surface: #131c2b;
  --color-surface-raised: #182436;
  --color-border: rgba(140, 180, 255, 0.1);
  --color-border-strong: rgba(140, 180, 255, 0.2);
  --color-text: #e4eaf6;
  --color-text-muted: #7e8da6;
  --color-accent: #4da6ff;
  --color-accent-dim: rgba(77, 166, 255, 0.12);
  --color-accent-glow: rgba(77, 166, 255, 0.25);
  --color-accent-hover: #74bbff;
  --color-accent-2: #22d3a7;
  --color-accent-2-dim: rgba(34, 211, 167, 0.1);
  --color-red: #ff4d5e;
  --color-red-dim: rgba(255, 77, 94, 0.15);
  --color-red-glow: rgba(255, 77, 94, 0.4);
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 5rem;
  --space-4xl: 7rem;
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --max-width: 72rem;
  --header-h: 4rem;
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  overflow-x: hidden;
}

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

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  z-index: 100;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
}
.skip-link:focus { top: var(--space-md); }

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color 0.15s ease;
}
a:hover { color: var(--color-accent-hover); }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}
.container--narrow { max-width: 40rem; }

/* ============================================================
   LANGUAGE TOGGLE
   ============================================================ */

html[lang="en"] .lang-de { display: none; }
html[lang="de"] .lang-en { display: none; }

.lang-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.lang-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ============================================================
   HEADER
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8, 13, 20, 0.88);
  backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  max-width: var(--max-width);
  margin-inline: auto;
  padding: var(--space-sm) var(--space-lg);
  min-height: var(--header-h);
}

.site-header__logo {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
  transition: color 0.15s;
}
.site-header__logo:hover { color: var(--color-accent); }

.site-header__sub-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.site-header__menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.75rem; height: 2.75rem;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  cursor: pointer;
  transition: border-color 0.15s;
}
.site-header__menu-toggle:hover { border-color: var(--color-accent); }

.site-header__menu-bar {
  display: block;
  width: 1.25rem; height: 2px;
  margin-inline: auto;
  background: var(--color-text);
  border-radius: 1px;
  transition: background 0.15s;
}

.site-nav { display: none; }

.site-nav.is-open {
  display: block;
  position: absolute;
  top: 100%;
  left: 0; right: 0;
  z-index: 40;
  padding: var(--space-lg);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.site-nav__list {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.site-nav__link {
  display: block;
  padding: var(--space-sm) 0;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 0.15s;
}
.site-nav__link:hover { color: var(--color-text); }

.site-nav__cta {
  margin-top: var(--space-sm);
  text-align: center;
  text-decoration: none;
}

@media (min-width: 60rem) {
  .site-header__menu-toggle { display: none; }
  .site-nav {
    display: block;
    position: static;
    padding: 0;
    background: transparent;
    border: 0;
  }
  .site-nav__list {
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-lg);
  }
  .site-nav__item--cta { margin-left: var(--space-sm); }
  .site-nav__cta { margin-top: 0; }
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.25;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg);
  box-shadow: 0 0 20px var(--color-accent-dim), 0 2px 8px rgba(0, 0, 0, 0.3);
}
.btn--primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-bg);
  box-shadow: 0 0 30px var(--color-accent-glow), 0 4px 16px rgba(0, 0, 0, 0.4);
  transform: translateY(-1px);
}

.btn--secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}
.btn--secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-dim);
}

.btn--block { width: 100%; }

.btn--lg {
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
}

@media (min-width: 40rem) {
  .btn--lg {
    padding: 0.875rem 2rem;
    font-size: 1rem;
  }
}

/* ============================================================
   HERO
   ============================================================ */

.hero {
  position: relative;
  padding: var(--space-2xl) var(--space-lg) var(--space-xl);
  overflow: hidden;
}

@media (min-width: 40rem) {
  .hero {
    padding: var(--space-4xl) var(--space-lg) var(--space-3xl);
  }
}

.hero::before {
  content: "";
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 120%;
  height: 100%;
  background: radial-gradient(ellipse 60% 55% at 50% 0%, var(--color-accent-glow), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border-strong), transparent);
}

.hero__grid {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin-inline: auto;
  display: grid;
  gap: var(--space-lg);
  align-items: center;
}

@media (min-width: 40rem) {
  .hero__grid {
    gap: var(--space-2xl);
  }
}

@media (min-width: 60rem) {
  .hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--space-3xl);
  }
}

.hero__eyebrow {
  margin: 0 0 var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.3em 0.65em;
  background: var(--color-accent-dim);
  border: 1px solid rgba(77, 166, 255, 0.15);
  border-radius: 2rem;
}

@media (min-width: 40rem) {
  .hero__eyebrow {
    margin-bottom: var(--space-md);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    gap: 0.5em;
    padding: 0.35em 0.75em;
  }
}

.hero__title {
  margin: 0 0 var(--space-md);
  font-size: clamp(1.75rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-muted) 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

@media (min-width: 40rem) {
  .hero__title {
    margin-bottom: var(--space-lg);
  }
}

.hero__lead {
  margin: 0 0 var(--space-md);
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.6;
  max-width: 36rem;
}

@media (min-width: 40rem) {
  .hero__lead {
    margin-bottom: var(--space-xl);
    font-size: 1.125rem;
    line-height: 1.7;
  }
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

@media (min-width: 40rem) {
  .hero__actions {
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
  }
}
.hero__actions--center { justify-content: center; }

.hero__note {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  max-width: 34rem;
}

@media (min-width: 40rem) {
  .hero__note {
    font-size: 0.875rem;
  }
}

/* Hero mock devices */

.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__mock {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 0;
  width: 100%;
}

/* Portrait signage screen */

.hero__mock-screen {
  position: relative;
  aspect-ratio: 9 / 16;
  width: clamp(8rem, 22vw, 14rem);
  flex-shrink: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-xl);
  padding: var(--space-lg) var(--space-md);
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(77, 166, 255, 0.05),
    0 12px 48px rgba(0, 0, 0, 0.45),
    0 0 100px rgba(77, 166, 255, 0.07);
}

.hero__mock-screen::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2rem;
  background: linear-gradient(180deg, var(--color-surface-raised), transparent);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  z-index: 1;
}

.hero__mock-screen::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(77, 166, 255, 0.04) 0%, transparent 40%);
  pointer-events: none;
}

/* Red cursor on the screen mirroring phone trackpad */

.hero__mock-screen-cursor {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-red);
  box-shadow:
    0 0 8px var(--color-red-glow),
    0 0 18px rgba(255, 77, 94, 0.15);
  z-index: 3;
  animation: screen-cursor-move 7s ease-in-out infinite;
}

@keyframes screen-cursor-move {
  0%   { top: 35%; left: 25%; }
  15%  { top: 44%; left: 55%; }
  30%  { top: 54%; left: 40%; }
  50%  { top: 40%; left: 65%; }
  70%  { top: 57%; left: 30%; }
  85%  { top: 48%; left: 50%; }
  100% { top: 35%; left: 25%; }
}

/* Phone device -- styled as a smartphone */

.hero__mock-phone {
  width: clamp(5.5rem, 14vw, 8rem);
  flex-shrink: 0;
  background: #0f1724;
  border: 2px solid var(--color-border-strong);
  border-radius: 1.5rem;
  padding: 0.35rem;
  box-shadow:
    0 0 0 1px rgba(77, 166, 255, 0.05),
    0 12px 48px rgba(0, 0, 0, 0.45),
    0 0 100px rgba(77, 166, 255, 0.07);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__mock-phone-notch {
  width: 2rem;
  height: 4px;
  background: var(--color-border-strong);
  border-radius: 2px;
  margin: 0.3rem auto 0.2rem;
  flex-shrink: 0;
}

.hero__mock-phone-screen {
  width: 100%;
  flex: 1;
  background: var(--color-surface);
  border-radius: 1rem;
  padding: var(--space-xs);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.hero__mock-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
  white-space: nowrap;
}

.hero__mock-phone .hero__mock-label {
  text-align: center;
  margin-bottom: 0.2rem;
  font-size: 0.4375rem;
}

@media (min-width: 40rem) {
  .hero__mock-label {
    font-size: 0.5625rem;
  }
  .hero__mock-phone .hero__mock-label {
    font-size: 0.5rem;
  }
}

/* QR code illustration on signage screen */

.hero__mock-qr {
  position: absolute;
  bottom: var(--space-md);
  right: var(--space-md);
  width: 3rem;
  height: 3rem;
  background:
    linear-gradient(90deg, var(--color-accent) 30%, transparent 30%, transparent 40%, var(--color-text) 40%, var(--color-text) 55%, transparent 55%, transparent 65%, var(--color-accent) 65%, var(--color-accent) 75%, transparent 75%),
    linear-gradient(0deg, var(--color-accent) 20%, transparent 20%, transparent 35%, var(--color-text) 35%, var(--color-text) 50%, transparent 50%, transparent 65%, var(--color-accent) 65%, var(--color-accent) 80%, transparent 80%);
  background-size: 6px 6px;
  border-radius: var(--radius-sm);
  opacity: 0.6;
  animation: qr-pulse 5s ease-in-out infinite;
}

@media (min-width: 40rem) {
  .hero__mock-qr {
    width: 3.5rem;
    height: 3.5rem;
    background-size: 7px 7px;
  }
}

@keyframes qr-pulse {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 0.72; }
}

/* Screen placeholder content lines */

.hero__mock-content {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  position: relative;
  z-index: 1;
  margin-top: 0.5rem;
}

.hero__mock-line {
  height: 5px;
  border-radius: 3px;
  background: var(--color-border);
}
.hero__mock-line--short { width: 55%; }
.hero__mock-line--med { width: 80%; }
.hero__mock-line--long { width: 95%; }
.hero__mock-line--accent {
  width: 40%;
  background: var(--color-accent-dim);
  border: 1px solid rgba(77, 166, 255, 0.12);
}

/* Connection area with radio waves */

.hero__mock-connection {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: clamp(3rem, 10vw, 6rem);
  flex-shrink: 0;
  align-self: center;
  padding: var(--space-md) 0;
}

.hero__mock-waves {
  width: 100%;
  height: auto;
  display: block;
}

.hero__wave {
  animation: wave-pulse 2.5s ease-in-out infinite;
}

.hero__wave--1 { animation-delay: 0s; }
.hero__wave--2 { animation-delay: 0.4s; }
.hero__wave--3 { animation-delay: 0.8s; }

@keyframes wave-pulse {
  0%, 100% { opacity: 0.15; }
  50% { opacity: 1; }
}

.hero__mock-connection-label {
  margin-top: var(--space-xs);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  opacity: 0.6;
  white-space: nowrap;
}

@media (min-width: 40rem) {
  .hero__mock-connection-label {
    font-size: 0.5625rem;
  }
}

/* Phone trackpad area */

.hero__mock-pad {
  flex: 1;
  min-height: 4rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 4;
}

.hero__mock-pad-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 25% 25%;
  opacity: 0.25;
}

/* Blue cursor dot on the phone trackpad */

.hero__mock-cursor {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent-glow);
  z-index: 2;
  animation: cursor-move 7s ease-in-out infinite;
}

@keyframes cursor-move {
  0%   { top: 20%; left: 25%; }
  15%  { top: 35%; left: 55%; }
  30%  { top: 50%; left: 40%; }
  50%  { top: 28%; left: 65%; }
  70%  { top: 55%; left: 30%; }
  85%  { top: 40%; left: 50%; }
  100% { top: 20%; left: 25%; }
}

/* Touch action buttons */

.hero__mock-btns {
  display: flex;
  gap: 3px;
  margin-top: 3px;
}

.hero__mock-btn {
  flex: 1;
  height: 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface-raised);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.4375rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.hero__mock-btn--active {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-dim);
}

@media (min-width: 40rem) {
  .hero__mock-btn {
    height: 1.5rem;
    font-size: 0.5rem;
  }
  .hero__mock-phone {
    border-radius: 2rem;
  }
  .hero__mock-phone-notch {
    width: 2.5rem;
    height: 5px;
  }
  .hero__mock-phone-screen {
    border-radius: 1.25rem;
  }
}

/* ============================================================
   SECTIONS
   ============================================================ */

.section {
  position: relative;
  padding: var(--space-2xl) 0;
}

@media (min-width: 40rem) {
  .section {
    padding: var(--space-3xl) 0;
  }
}

.section::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.section--tight { padding: var(--space-xl) 0; }

.section--alt {
  background: var(--color-bg-alt);
}

.section--cta {
  text-align: center;
  background: linear-gradient(180deg, var(--color-bg-alt), var(--color-bg));
  padding: var(--space-2xl) 0;
}

@media (min-width: 40rem) {
  .section--cta {
    padding: var(--space-4xl) 0;
  }
}

.section__title {
  margin: 0 0 var(--space-sm);
  font-size: clamp(1.375rem, 3.5vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.025em;
}

@media (min-width: 40rem) {
  .section__title {
    margin-bottom: var(--space-md);
  }
}

.section__intro {
  margin: 0 0 var(--space-lg);
  color: var(--color-text-muted);
  max-width: 42rem;
  font-size: 0.9375rem;
  line-height: 1.6;
}

@media (min-width: 40rem) {
  .section__intro {
    margin-bottom: var(--space-xl);
    font-size: 1.0625rem;
    line-height: 1.7;
  }
}
.section--cta .section__intro { margin-inline: auto; }

/* ============================================================
   PROBLEM SECTION
   ============================================================ */

.problem-grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 40rem) {
  .problem-grid { grid-template-columns: repeat(2, 1fr); }
}

.problem-card {
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s, box-shadow 0.2s;
}

@media (min-width: 40rem) {
  .problem-card {
    padding: var(--space-lg);
  }
}
.problem-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

.problem-card__icon {
  margin-bottom: var(--space-sm);
}

.problem-card__symbol {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  font-size: 1rem;
  color: var(--color-red);
  background: var(--color-red-dim);
  border: 1px solid rgba(255, 77, 94, 0.2);
  border-radius: var(--radius-sm);
}

.problem-card__title {
  margin: 0 0 var(--space-xs);
  font-size: 1rem;
  font-weight: 600;
}

.problem-card__text {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ============================================================
   CONNECTION OPTIONS
   ============================================================ */

.connect-grid {
  display: grid;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

@media (min-width: 48rem) {
  .connect-grid { grid-template-columns: repeat(3, 1fr); }
}

.connect-card {
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s, box-shadow 0.2s;
}

@media (min-width: 40rem) {
  .connect-card {
    padding: var(--space-lg);
  }
}
.connect-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2), 0 0 40px var(--color-accent-dim);
}

.connect-card__visual {
  height: 10rem;
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

.connect-card__mock-screen {
  position: relative;
  width: 9rem;
  height: 6.5rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.connect-card__mock-qr {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 3rem;
  height: 3rem;
  background:
    linear-gradient(90deg, var(--color-accent) 30%, transparent 30%, transparent 50%, var(--color-text) 50%, var(--color-text) 70%, transparent 70%),
    linear-gradient(0deg, var(--color-accent) 25%, transparent 25%, transparent 50%, var(--color-text) 50%, var(--color-text) 75%, transparent 75%);
  background-size: 6px 6px;
  border-radius: 3px;
  opacity: 0.7;
}

.connect-card__mock-qr--corner {
  top: auto;
  left: auto;
  right: 0.5rem;
  bottom: 0.5rem;
  transform: none;
  width: 1.5rem;
  height: 1.5rem;
}

.connect-card__mock-phone {
  width: 3.5rem;
  height: 6rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.connect-card__mock-scan {
  width: 2rem;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
  box-shadow: 0 0 6px var(--color-accent-glow);
  animation: scan-line 3s ease-in-out infinite;
}

@keyframes scan-line {
  0%, 100% { transform: translateY(-0.75rem); opacity: 0.5; }
  50% { transform: translateY(0.75rem); opacity: 0.9; }
}

.connect-card__mock-content {
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.connect-card__mock-line {
  height: 3px;
  width: 80%;
  background: var(--color-border);
  border-radius: 2px;
}
.connect-card__mock-line--short { width: 50%; }

.connect-card__mock-screen--overlay {
  width: 10rem;
}

.connect-card__mock-browser {
  width: 10rem;
  height: 6rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.connect-card__mock-bar {
  height: 1.75rem;
  background: var(--color-surface-raised);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding-inline: 0.6rem;
}

.connect-card__mock-url {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  color: var(--color-accent);
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.connect-card__title {
  margin: 0 0 var(--space-xs);
  font-size: 1.0625rem;
  font-weight: 600;
}

.connect-card__text {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ============================================================
   ARCHITECTURE
   ============================================================ */

.architecture {
  padding: var(--space-xl);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.architecture__title {
  margin: 0 0 var(--space-sm);
  font-size: 1.125rem;
}

.architecture__text {
  margin: 0 0 var(--space-lg);
  color: var(--color-text-muted);
}

.architecture__figure { margin: 0; }

.architecture__ascii {
  margin: 0;
  padding: var(--space-lg);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: clamp(0.625rem, 1.3vw, 0.8125rem);
  line-height: 1.5;
  color: var(--color-text-muted);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}
.architecture__ascii code { font-family: inherit; }

/* ============================================================
   RED DOT SECTION
   ============================================================ */

.red-dot-grid {
  display: grid;
  gap: var(--space-2xl);
  align-items: center;
}

@media (min-width: 60rem) {
  .red-dot-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.red-dot-copy__lead {
  margin: 0 0 var(--space-lg);
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  line-height: 1.7;
}

.red-dot-copy__detail {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.red-dot-visual {
  display: flex;
  justify-content: center;
}

.red-dot-mock {
  position: relative;
  width: 100%;
  max-width: 28rem;
  aspect-ratio: 16 / 10;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(77, 166, 255, 0.05),
    0 8px 40px rgba(0, 0, 0, 0.4),
    0 0 80px rgba(77, 166, 255, 0.06);
}

.red-dot-mock__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.red-dot-mock__content {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.red-dot-mock__line {
  border-radius: 3px;
  background: var(--color-border);
}
.red-dot-mock__line--title {
  width: 60%;
  height: 8px;
}
.red-dot-mock__line--text {
  width: 85%;
  height: 5px;
}
.red-dot-mock__line--short {
  width: 55%;
}

.red-dot-mock__block {
  width: 70%;
  height: 2.5rem;
  margin-top: var(--space-sm);
  background: var(--color-accent-dim);
  border: 1px solid rgba(77, 166, 255, 0.12);
  border-radius: var(--radius-md);
}

.red-dot-mock__cursor {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-red);
  box-shadow:
    0 0 12px var(--color-red-glow),
    0 0 24px rgba(255, 77, 94, 0.2);
  animation: red-dot-move 5s ease-in-out infinite;
  z-index: 2;
}

@keyframes red-dot-move {
  0%   { top: 30%; left: 25%; }
  20%  { top: 50%; left: 55%; }
  40%  { top: 35%; left: 70%; }
  60%  { top: 65%; left: 40%; }
  80%  { top: 45%; left: 20%; }
  100% { top: 30%; left: 25%; }
}

/* ============================================================
   TWO-COLUMN LAYOUT (Requirements + Security)
   ============================================================ */

.two-col {
  display: grid;
  gap: var(--space-2xl);
}

@media (min-width: 48rem) {
  .two-col {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
  }
}

.two-col__item {
  min-width: 0;
}

.two-col__item .prose {
  max-width: none;
}

/* ============================================================
   FEATURES
   ============================================================ */

.feature-list {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 40rem) {
  .feature-list { grid-template-columns: repeat(2, 1fr); }
}

.feature-list__item {
  margin: 0;
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
  transition: border-color 0.2s, box-shadow 0.2s;
}

@media (min-width: 40rem) {
  .feature-list__item {
    padding: var(--space-lg);
  }
}
.feature-list__item:hover {
  border-color: var(--color-border-strong);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
}
.feature-list__item strong { color: var(--color-text); }

/* ============================================================
   USE CASES
   ============================================================ */

.use-case-grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 40rem) {
  .use-case-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 64rem) {
  .use-case-grid { grid-template-columns: repeat(4, 1fr); }
}

.use-case-card {
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s, box-shadow 0.2s;
}

@media (min-width: 40rem) {
  .use-case-card {
    padding: var(--space-lg);
  }
}
.use-case-card:hover {
  border-color: var(--color-accent-2);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2), 0 0 30px var(--color-accent-2-dim);
}

.use-case-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: var(--space-md);
  font-size: 1.25rem;
  color: var(--color-accent-2);
  background: var(--color-accent-2-dim);
  border: 1px solid rgba(34, 211, 167, 0.15);
  border-radius: var(--radius-sm);
}

.use-case-card__title {
  margin: 0 0 var(--space-xs);
  font-size: 1rem;
  font-weight: 600;
}

.use-case-card__text {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ============================================================
   STEPS (Setup)
   ============================================================ */

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 48rem) {
  .steps { grid-template-columns: repeat(3, 1fr); }
}

.steps__item {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s, box-shadow 0.2s;
}

@media (min-width: 40rem) {
  .steps__item {
    gap: var(--space-md);
    padding: var(--space-lg);
  }
}
.steps__item:hover {
  border-color: var(--color-border-strong);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

.steps__num {
  flex-shrink: 0;
  width: 2.25rem; height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-accent);
  background: var(--color-accent-dim);
  border: 1px solid rgba(77, 166, 255, 0.15);
  border-radius: var(--radius-sm);
}

.steps__title {
  margin: 0 0 var(--space-xs);
  font-size: 1rem;
  font-weight: 600;
}

.steps__text {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ============================================================
   PRICING
   ============================================================ */

.pricing-card {
  max-width: 26rem;
  margin-inline: auto;
  padding: var(--space-2xl) var(--space-xl);
  text-align: center;
  background: linear-gradient(180deg, var(--color-surface-raised), var(--color-surface));
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-xl);
  box-shadow:
    0 0 0 1px var(--color-border),
    0 1rem 3rem rgba(0, 0, 0, 0.3),
    0 0 60px var(--color-accent-dim);
}

.pricing-card__label {
  margin: 0 0 var(--space-xs);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}

.pricing-card__price {
  margin: 0 0 var(--space-md);
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
}

.pricing-card__currency {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-right: 0.25rem;
  vertical-align: super;
}

.pricing-card__detail {
  margin: 0 0 var(--space-xl);
  color: var(--color-text-muted);
  font-size: 1rem;
}

.pricing-card__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.pricing-card__footnote {
  margin: var(--space-lg) 0 0;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.pricing-card__success {
  margin: var(--space-md) 0 0;
  padding: var(--space-sm) var(--space-md);
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: 0.5rem;
  color: #22c55e;
  font-size: 0.9375rem;
  font-weight: 500;
  text-align: center;
}

/* ============================================================
   PROSE / CONTENT
   ============================================================ */

.prose { max-width: 42rem; }
.prose--compact {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}
.prose p, .prose ul { margin: 0 0 var(--space-md); }
.prose ul { padding-left: 1.25rem; }

.inline-code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  padding: 0.15em 0.4em;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.subsection-title {
  margin: var(--space-xl) 0 var(--space-md);
  font-size: 1.125rem;
}

.flow-list {
  margin: 0 0 var(--space-xl);
  padding-left: 1.25rem;
  color: var(--color-text-muted);
}
.flow-list li { margin-bottom: var(--space-xs); }

/* Legal pages */
.legal-address {
  font-style: normal;
  margin: 0 0 var(--space-lg);
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  line-height: 1.7;
}

.privacy-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  margin: 0 0 var(--space-lg);
}
.privacy-table th,
.privacy-table td {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}
.privacy-table th {
  background: var(--color-surface);
  font-weight: 600;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-text-muted);
}
.privacy-table td {
  color: var(--color-text-muted);
}

/* ============================================================
   FAQ
   ============================================================ */

.faq {
  margin: 0;
  max-width: 42rem;
}

.faq__item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  background: var(--color-surface);
  transition: border-color 0.2s;
}

.faq__item:hover {
  border-color: var(--color-border-strong);
}

.faq__item[open] {
  border-color: var(--color-accent);
}

.faq__q {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  transition: color 0.15s;
}

.faq__q::-webkit-details-marker { display: none; }
.faq__q::marker { display: none; content: ""; }

.faq__q::before {
  content: "+";
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-accent);
  background: var(--color-accent-dim);
  border-radius: var(--radius-sm);
  transition: transform 0.2s;
}

.faq__item[open] .faq__q::before {
  content: "\2212";
  transform: rotate(0deg);
}

.faq__a {
  padding: 0 var(--space-lg) var(--space-lg);
  padding-left: calc(var(--space-lg) + 1.5rem + var(--space-sm));
  color: var(--color-text-muted);
  line-height: 1.7;
}
.faq__a p { margin: 0; }

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

@media (min-width: 40rem) {
  .site-footer {
    padding: var(--space-2xl) var(--space-lg);
  }
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: flex-start;
}

.site-footer__brand {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.9375rem;
}

.site-footer__links {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.site-footer__links a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.site-footer__links a:hover { color: var(--color-accent); }

.site-footer__meta {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

@media (min-width: 40rem) {
  .site-footer__inner {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
  }
  .site-footer__meta { width: 100%; }
}