@font-face {
  font-family: "CY IBM Plex Mono ExtraLight";
  src:
    local("IBM Plex Mono ExtraLight"),
    local("IBMPlexMono-ExtraLight"),
    url("../fonts/IBMPlexMono-ExtraLight.ttf") format("truetype");
  font-weight: 200;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #030406;
  --bg-2: #06080b;
  --fg: #dbeff2;
  --muted: #7c8b91;
  --faint: #39444a;
  --line: rgba(219, 239, 242, 0.16);
  --line-2: rgba(114, 247, 255, 0.2);
  --hot: #72f7ff;
  --warm: #ede8dc;
  --danger: #ff7abf;
  --ok: #a9ffdf;
  --shadow: 0 24px 80px rgba(0,0,0,.55);
  --mono: "CY IBM Plex Mono ExtraLight", "IBM Plex Mono", "Courier New", monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--bg); scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--mono);
  font-weight: 200;
  letter-spacing: 0.02em;
  color: var(--fg);
  background:
    linear-gradient(180deg, rgba(3,4,6,.70), rgba(3,4,6,.94) 58%, #030406),
    image-set(url("../img/bg-cipherworld-mobile.webp") type("image/webp")) center top / cover fixed no-repeat,
    var(--bg);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(to bottom, rgba(255,255,255,.026) 0, rgba(255,255,255,.026) 1px, transparent 1px, transparent 4px),
    radial-gradient(circle at 80% 20%, rgba(114,247,255,.09), transparent 30%),
    radial-gradient(circle at 20% 90%, rgba(255,122,191,.05), transparent 24%);
  mix-blend-mode: screen;
  opacity: .48;
  z-index: 1;
}

body::after {
  content: "";
  position: fixed;
  inset: -20%;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent 0 12%, rgba(114,247,255,.045) 12.2%, transparent 12.5% 49%, rgba(219,239,242,.025) 49.2%, transparent 49.6% 100%),
    linear-gradient(0deg, transparent 0 18%, rgba(219,239,242,.025) 18.2%, transparent 18.5% 64%, rgba(114,247,255,.035) 64.2%, transparent 64.5% 100%);
  transform: rotate(-2deg);
  opacity: .55;
  z-index: 1;
}

a {
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px solid rgba(219,239,242,.26);
  transition: color .18s ease, border-color .18s ease, opacity .18s ease;
}
a:hover, a:focus-visible {
  color: var(--hot);
  border-color: var(--hot);
  outline: none;
}

img { max-width: 100%; height: auto; display: block; }
::selection { background: rgba(114,247,255,.22); color: var(--fg); }

#cipher-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  opacity: .42;
}

.shell {
  position: relative;
  z-index: 2;
  width: min(1120px, calc(100% - 28px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
  background: rgba(3,4,6,.74);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border-bottom: 0;
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: .12em;
}
.brand img { width: 24px; height: 24px; opacity: .88; }
.brand span { opacity: .92; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  text-transform: lowercase;
  white-space: nowrap;
}
.nav-links a {
  border-color: transparent;
  color: var(--muted);
}
.nav-links a:hover, .nav-links a[aria-current="page"] {
  color: var(--fg);
  border-color: rgba(219,239,242,.45);
}

main { padding: 34px 0 70px; }

.hero {
  min-height: calc(100svh - 92px);
  display: grid;
  align-items: end;
  padding: 42px 0 56px;
}

.terminal {
  border: 1px solid var(--line);
  background: rgba(3, 4, 6, .72);
  box-shadow: var(--shadow);
  backdrop-filter: blur(24px);
}

.terminal-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  font-size: 11px;
  text-transform: lowercase;
}
.terminal-head span:last-child {
  text-align: right;
}

.hero-grid {
  display: grid;
  gap: 28px;
  padding: clamp(22px, 5vw, 56px);
}

.kicker {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 980px;
  font-size: clamp(42px, 15vw, 144px);
  line-height: .82;
  letter-spacing: -.08em;
  font-weight: 200;
  margin-bottom: 22px;
}
h2 {
  font-size: clamp(28px, 7vw, 68px);
  line-height: .92;
  letter-spacing: -.055em;
  font-weight: 200;
  margin-bottom: 18px;
}
h3 {
  font-size: clamp(17px, 3vw, 24px);
  line-height: 1.05;
  letter-spacing: -.015em;
  font-weight: 200;
  margin-bottom: 12px;
}
p, li, dd, dt {
  color: rgba(219,239,242,.78);
  line-height: 1.72;
  font-size: 14px;
}
.lede {
  max-width: 760px;
  color: rgba(219,239,242,.83);
  font-size: clamp(15px, 2.4vw, 20px);
  line-height: 1.6;
}

.prompt {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 28px;
  color: var(--muted);
  font-size: 12px;
}
.prompt code, code, .mono {
  font-family: var(--mono);
  font-weight: 200;
  color: var(--fg);
}

.cmd-line {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.cmd-line::before {
  content: ">";
  color: var(--hot);
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  background: rgba(219,239,242,.035);
  color: var(--fg);
  text-transform: lowercase;
  font-size: 12px;
  letter-spacing: .12em;
  border-radius: 0;
}
.btn:hover, .btn:focus-visible {
  background: rgba(114,247,255,.06);
  border-color: rgba(114,247,255,.55);
}

.grid {
  display: grid;
  gap: 14px;
}
.grid.two, .grid.three { grid-template-columns: 1fr; }

.panel {
  border: 1px solid var(--line);
  background: rgba(3,4,6,.62);
  backdrop-filter: blur(18px);
  padding: clamp(18px, 4vw, 32px);
}
.panel.thin { padding: 16px; }

.manifest {
  display: grid;
  gap: 10px;
  margin-top: 28px;
}
.manifest a {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  color: var(--fg);
}
.manifest small {
  color: var(--muted);
  text-align: right;
}

.rule {
  height: 1px;
  background: var(--line);
  margin: 36px 0;
}

.page-head {
  padding: 54px 0 30px;
}
.page-head h1 { font-size: clamp(46px, 11vw, 118px); }
.page-head .lede { max-width: 720px; }

.verify-wrap {
  display: grid;
  gap: 16px;
}

.input-row {
  display: grid;
  gap: 10px;
}
label {
  font-size: 11px;
  color: var(--muted);
  text-transform: lowercase;
  letter-spacing: .13em;
}
input {
  width: 100%;
  min-height: 46px;
  padding: 0 12px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,.38);
  color: var(--fg);
  font-family: var(--mono);
  font-weight: 200;
  letter-spacing: .03em;
  border-radius: 0;
}
input:focus {
  outline: none;
  border-color: rgba(114,247,255,.62);
  box-shadow: 0 0 0 4px rgba(114,247,255,.06);
}
button {
  min-height: 46px;
  border: 1px solid rgba(114,247,255,.34);
  background: rgba(114,247,255,.05);
  color: var(--fg);
  font-family: var(--mono);
  font-weight: 200;
  text-transform: lowercase;
  letter-spacing: .12em;
  cursor: pointer;
  border-radius: 0;
}
button:hover { background: rgba(114,247,255,.09); }

.status {
  border: 1px solid var(--line);
  padding: 14px;
  color: var(--muted);
}
.status.ok { color: var(--ok); border-color: rgba(169,255,223,.28); }
.status.fail { color: var(--danger); border-color: rgba(255,122,191,.3); }

.proof-grid {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}
.proof-row {
  display: grid;
  gap: 8px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.proof-row dt {
  color: var(--muted);
  font-size: 11px;
  text-transform: lowercase;
  letter-spacing: .13em;
}
.proof-row dd {
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--fg);
}
.hash {
  font-size: 12px;
  line-height: 1.65;
}

.qr {
  display: grid;
  place-items: center;
  min-height: 220px;
  background: rgba(219,239,242,.03);
  border: 1px solid var(--line);
}
.qr img {
  width: min(180px, 70%);
  padding: 10px;
  background: var(--fg);
  filter: invert(1);
  mix-blend-mode: screen;
  opacity: .85;
}

.product-hero {
  display: grid;
  gap: 18px;
}
.product-media {
  position: relative;
  border: 1px solid var(--line);
  background: rgba(3,4,6,.64);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.product-media img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}
.product-media::after {
  content: "CY:\\_001";
  position: absolute;
  left: 12px;
  bottom: 10px;
  color: rgba(219,239,242,.56);
  font-size: 11px;
  letter-spacing: .18em;
}

.specs {
  margin: 0;
  display: grid;
  gap: 0;
}
.specs div {
  display: grid;
  grid-template-columns: minmax(110px, .36fr) 1fr;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}
.specs dt {
  color: var(--muted);
  font-size: 11px;
  text-transform: lowercase;
  letter-spacing: .12em;
}
.specs dd {
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--fg);
}

.gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.gallery figure {
  margin: 0;
  border: 1px solid var(--line);
  background: rgba(3,4,6,.56);
  overflow: hidden;
}
.gallery img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  transition: transform .45s ease, opacity .25s ease;
  opacity: .92;
}
.gallery figure:hover img {
  transform: scale(1.015);
  opacity: 1;
}
.gallery figcaption {
  padding: 10px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: lowercase;
}

.copy {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  border-bottom: 1px solid rgba(219,239,242,.22);
  padding: 0;
  min-height: auto;
  background: transparent;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: .08em;
}
.copy:hover { color: var(--hot); background: transparent; }

.footer {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--line);
  padding: 22px 0 30px;
  color: var(--muted);
  font-size: 11px;
}
.footer-grid {
  display: grid;
  gap: 12px;
}
.footer a { color: var(--muted); border-color: transparent; }
.footer a:hover { color: var(--fg); border-color: var(--line); }

.ascii {
  white-space: pre-wrap;
  color: rgba(219,239,242,.48);
  font-size: 11px;
  line-height: 1.25;
  overflow-x: auto;
}

@media (min-width: 700px) {
  body {
    background:
      linear-gradient(180deg, rgba(3,4,6,.58), rgba(3,4,6,.94) 62%, #030406),
      image-set(url("../img/bg-cipherworld.webp") type("image/webp")) center top / cover fixed no-repeat,
      var(--bg);
  }
  .nav-links { gap: 22px; }
  .grid.two { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .grid.three { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .hero-grid { grid-template-columns: 1.15fr .85fr; align-items: end; }
  .input-row { grid-template-columns: 1fr auto; align-items: end; }
  .product-hero { grid-template-columns: .95fr 1.05fr; align-items: end; }
  .gallery { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1fr auto; align-items: center; }
  .proof-row { grid-template-columns: 180px 1fr; }
}

@media (min-width: 1040px) {
  .gallery { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
  #cipher-canvas { display: none; }
}