:root {
  --dial: #2a2e35;
  --hand: #e0a100;
  --face: #d8dce2;
  --night: #0f1218;
  --ink: #1c2026;
  --mute: #5a616c;
  --rim: #3a404a;
  --display: "Russo One", "Arial Black", sans-serif;
  --body: "IBM Plex Sans", "Segoe UI", sans-serif;
  --label: "Share Tech Mono", "Consolas", monospace;
  --measure: 40rem;
  --shell: min(72rem, 100%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--face);
  font-family: var(--body);
  font-size: 1.05rem;
  line-height: 1.7;
  background:
    radial-gradient(70% 55% at 78% 8%, rgba(224, 161, 0, 0.12), transparent 55%),
    radial-gradient(55% 45% at 12% 92%, rgba(216, 220, 226, 0.06), transparent 50%),
    linear-gradient(168deg, var(--night) 0%, #141820 42%, var(--dial) 100%);
  background-attachment: fixed;
}

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

a {
  color: var(--hand);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: #f0b933;
}

:focus-visible {
  outline: 3px solid var(--hand);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 0.75rem;
  top: -4rem;
  z-index: 8;
  background: var(--ink);
  color: var(--face);
  padding: 0.55rem 0.9rem;
  text-decoration: none;
}

.skip:focus {
  top: 0.75rem;
}

.shell {
  width: var(--shell);
  margin: 0 auto;
  padding: 0 1.25rem 3.5rem;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1.35rem 0 0.85rem;
}

.brand {
  font-family: var(--display);
  font-size: clamp(1.85rem, 4.2vw, 2.65rem);
  letter-spacing: 0.02em;
  color: var(--face);
  text-decoration: none;
  line-height: 1;
  animation: brand-tick 7s ease-in-out infinite;
}

.brand:hover {
  color: #eef1f4;
}

.nav {
  display: flex;
  gap: 1.1rem;
  flex-wrap: wrap;
}

.nav a {
  font-family: var(--label);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--face) 78%, var(--mute));
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 0.12rem;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--hand);
  border-color: var(--hand);
}

.hero {
  position: relative;
  min-height: min(86vh, 46rem);
  display: grid;
  align-content: end;
  padding: 2.2rem 0 1.8rem;
  overflow: hidden;
}

.hero__gauge {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero__gauge svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__copy {
  position: relative;
  z-index: 1;
  max-width: 34rem;
}

.hero__copy .label {
  font-family: var(--label);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--hand);
  margin: 0 0 0.65rem;
}

.hero h1 {
  font-family: var(--display);
  font-size: clamp(2.4rem, 6.2vw, 4.1rem);
  font-weight: 400;
  line-height: 1.02;
  margin: 0 0 0.85rem;
  letter-spacing: 0.01em;
  color: var(--face);
  text-shadow: 0 2px 22px rgba(15, 18, 24, 0.65);
}

.lede {
  margin: 0;
  font-size: 1.12rem;
  max-width: 34rem;
  color: color-mix(in srgb, var(--face) 88%, var(--mute));
}

.dial-line {
  height: 2px;
  margin: 0.35rem 0 2.1rem;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--rim) 12%,
    var(--hand) 48%,
    var(--face) 82%,
    transparent 100%
  );
  animation: dial-pulse 5.4s ease-in-out infinite;
}

.panel {
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--face) 96%, #fff), var(--face));
  color: var(--ink);
  padding: 2.35rem 1.55rem 2.55rem;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.4),
    0 18px 42px rgba(15, 18, 24, 0.35);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  animation: panel-rise 0.85s ease-out both;
}

.panel > * + * {
  margin-top: 2.4rem;
}

.panel h2 {
  font-family: var(--display);
  font-size: clamp(1.55rem, 3.2vw, 2rem);
  font-weight: 400;
  letter-spacing: 0.02em;
  margin: 0 0 0.85rem;
  color: var(--ink);
}

.panel > p,
.section-lede {
  margin: 0 0 1.1rem;
  max-width: var(--measure);
  color: color-mix(in srgb, var(--ink) 82%, var(--mute));
}

.marks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.2rem;
}

.marks li {
  padding-left: 1.1rem;
  border-left: 3px solid var(--hand);
}

.marks strong {
  display: block;
  font-family: var(--display);
  font-size: 1.28rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  margin-bottom: 0.2rem;
}

.library {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.library a {
  display: grid;
  gap: 0.2rem;
  text-decoration: none;
  color: inherit;
  padding: 0.85rem 0.15rem 0.95rem;
  border-bottom: 1px solid color-mix(in srgb, var(--dial) 18%, transparent);
}

.library a:hover strong {
  color: color-mix(in srgb, var(--hand) 75%, var(--ink));
}

.library time {
  font-family: var(--label);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--mute);
}

.library strong {
  font-family: var(--display);
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.library span {
  color: color-mix(in srgb, var(--ink) 78%, var(--mute));
}

.standards,
.not-list,
.faq {
  margin: 0;
  padding-left: 1.15rem;
  max-width: var(--measure);
}

.standards li,
.not-list li,
.faq li {
  margin: 0 0 0.75rem;
}

.faq details {
  border-bottom: 1px solid color-mix(in srgb, var(--dial) 16%, transparent);
  padding: 0.7rem 0;
}

.faq summary {
  font-family: var(--display);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  cursor: pointer;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq details p {
  margin: 0.55rem 0 0.2rem;
  color: color-mix(in srgb, var(--ink) 80%, var(--mute));
}

.support-box {
  border-top: 1px solid color-mix(in srgb, var(--dial) 18%, transparent);
  padding-top: 1.4rem;
}

.support-box a.mail {
  font-family: var(--label);
  font-size: 1.05rem;
}

.page-head {
  margin-bottom: 1.35rem;
}

.page-head h1 {
  font-family: var(--display);
  font-size: clamp(2rem, 4.6vw, 3rem);
  font-weight: 400;
  letter-spacing: 0.02em;
  margin: 0 0 0.65rem;
  line-height: 1.08;
  color: var(--ink);
}

.page-head .lede {
  color: color-mix(in srgb, var(--ink) 78%, var(--mute));
}

.prose {
  max-width: var(--measure);
}

.prose h2 {
  font-family: var(--display);
  font-size: 1.45rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  margin: 1.75rem 0 0.6rem;
}

.prose p,
.prose li {
  margin: 0 0 1rem;
}

.prose ul,
.prose ol {
  padding-left: 1.15rem;
}

.inner-hero {
  padding: 1.4rem 0 0.4rem;
}

.inner-hero h1 {
  font-family: var(--display);
  font-size: clamp(2rem, 4.6vw, 3rem);
  font-weight: 400;
  margin: 0 0 0.6rem;
  color: var(--face);
}

.inner-hero .lede {
  margin-bottom: 1.4rem;
}

.foot {
  margin-top: 2.4rem;
  padding-top: 1.4rem;
  border-top: 1px solid color-mix(in srgb, var(--dial) 22%, transparent);
  color: color-mix(in srgb, var(--ink) 70%, var(--mute));
  font-size: 0.92rem;
}

.foot nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.05rem;
  margin-bottom: 0.85rem;
}

.foot a {
  font-family: var(--label);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--dial);
  text-decoration: none;
}

.foot a:hover {
  color: color-mix(in srgb, var(--hand) 80%, var(--ink));
}

.foot p {
  margin: 0.35rem 0;
}

.gauge-hand {
  transform-origin: 480px 240px;
  animation: hand-nudge 6.8s ease-in-out infinite;
}

.free-window {
  animation: window-glow 5.6s ease-in-out infinite;
}

.tick-ring {
  animation: ring-breathe 6.2s ease-in-out infinite;
}

@keyframes brand-tick {
  0%,
  100% {
    opacity: 0.92;
  }
  50% {
    opacity: 1;
  }
}

@keyframes dial-pulse {
  0%,
  100% {
    opacity: 0.7;
  }
  50% {
    opacity: 1;
  }
}

@keyframes panel-rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes hand-nudge {
  0%,
  100% {
    transform: rotate(-2deg);
  }
  50% {
    transform: rotate(3.2deg);
  }
}

@keyframes window-glow {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 0.9;
  }
}

@keyframes ring-breathe {
  0%,
  100% {
    opacity: 0.65;
  }
  50% {
    opacity: 1;
  }
}

@media (max-width: 720px) {
  .hero {
    min-height: auto;
    padding-top: 1.2rem;
  }

  .panel {
    padding: 1.55rem 1.05rem 2rem;
    clip-path: none;
  }

  .brand {
    font-size: 1.7rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .brand,
  .dial-line,
  .panel,
  .gauge-hand,
  .free-window,
  .tick-ring {
    animation: none;
  }
}