:root {
  --bg: #08090c;
  --bg-2: #101218;
  --ink: #f3efe4;
  --muted: #9a9588;
  --line: rgba(243, 239, 228, 0.12);
  --lime: #d8ff3e;
  --lime-dim: rgba(216, 255, 62, 0.14);
  --ice: #9be7ff;
  --void: #ff6b6b;
  --serif: "Shippori Mincho", "Hiragino Mincho ProN", serif;
  --sans: "Noto Sans JP", "Hiragino Sans", sans-serif;
  --display: "Syne", "Noto Sans JP", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --radius: 22px;
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

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

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -40px;
  z-index: 20;
  padding: 8px 12px;
  background: var(--lime);
  color: #111;
  font-weight: 600;
}

.skip-link:focus {
  top: 12px;
}

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 8;
  opacity: 0.08;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

.orb {
  pointer-events: none;
  position: fixed;
  width: 48vw;
  height: 48vw;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.22;
  z-index: 0;
}

.orb-a {
  top: -18vw;
  right: -10vw;
  background: #2a3a12;
}

.orb-b {
  bottom: -20vw;
  left: -16vw;
  background: #122433;
}

.nav,
main,
.foot {
  position: relative;
  z-index: 1;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 18px 6vw;
  backdrop-filter: blur(18px);
  background: rgba(8, 9, 12, 0.72);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--lime);
  border-radius: 8px;
  color: var(--lime);
}

.nav-links {
  display: flex;
  gap: 22px;
  margin-left: auto;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.08em;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--ink);
}

.nav-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.nav-status kbd {
  color: var(--lime);
}

.pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 0 rgba(216, 255, 62, 0.7);
  animation: ping 2.4s infinite;
}

@keyframes ping {
  70% {
    box-shadow: 0 0 0 8px rgba(216, 255, 62, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(216, 255, 62, 0);
  }
}

.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 12vh 6vw 8vh;
}

.eyebrow {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 28px;
}

.chip {
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--lime);
}

h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(48px, 9vw, 108px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

h1 em {
  font-style: normal;
  color: var(--lime);
}

.lede {
  max-width: 38em;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(16px, 2vw, 19px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.04em;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

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

.btn-primary {
  background: var(--lime);
  color: #11150a;
}

.btn-download {
  gap: 10px;
  padding: 6px 20px 6px 8px;
  background: var(--lime);
  color: #11150a;
}

.btn-app-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.28);
}

.btn-download-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.15;
}

.btn-download-copy strong {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.btn-download-copy small {
  margin-top: 2px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  opacity: 0.62;
}

.btn-ghost {
  border: 1px solid var(--line);
  color: var(--ink);
}

.hero-note {
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
}

.stage {
  padding: 0 6vw 10vh;
}

.vault {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  min-height: 420px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 32px;
  background:
    radial-gradient(circle at 50% 45%, rgba(216, 255, 62, 0.08), transparent 42%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 40%);
  overflow: hidden;
}

.vault-ring,
.vault-ring.delay {
  position: absolute;
  width: min(520px, 80%);
  aspect-ratio: 1;
  border: 1px solid rgba(216, 255, 62, 0.18);
  border-radius: 50%;
  animation: spin 24s linear infinite;
}

.vault-ring.delay {
  width: min(380px, 62%);
  animation-duration: 16s;
  animation-direction: reverse;
  border-style: dashed;
}

.vault-ring::before,
.vault-ring.delay::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 16px var(--lime);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.vault-core {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 32px;
}

.vault-lock {
  width: 88px;
  height: 88px;
  margin: 0 auto 18px;
  display: grid;
  place-items: center;
  color: var(--lime);
  border: 1px solid rgba(216, 255, 62, 0.35);
  border-radius: 24px;
  background: rgba(8, 9, 12, 0.7);
}

.vault-kicker {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--lime);
}

.vault-title {
  margin: 8px 0 0;
  font-family: var(--display);
  font-size: 28px;
  font-weight: 700;
}

.vault-copy {
  margin: 10px 0 0;
  color: var(--muted);
}

.vault-tags {
  position: absolute;
  inset: auto 24px 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  z-index: 1;
}

.vault-tags li {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(8, 9, 12, 0.7);
  font-size: 12px;
  color: var(--muted);
}

.statement,
.architecture,
.guarantees,
.product,
.start {
  max-width: var(--max);
  margin: 0 auto;
  padding: 8vh 6vw;
}

.mono-label {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--lime);
}

h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(28px, 4.6vw, 52px);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.statement p,
.section-lead {
  max-width: 40em;
  color: var(--muted);
}

.section-head {
  margin-bottom: 40px;
}

.flow {
  display: grid;
  grid-template-columns: 1.1fr 0.4fr 1fr;
  grid-template-areas:
    "mac pipes providers"
    "void void void";
  gap: 18px;
}

.node {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-2);
}

.node-mac {
  grid-area: mac;
  box-shadow: inset 0 0 0 1px rgba(216, 255, 62, 0.16);
}

.pipes {
  grid-area: pipes;
  position: relative;
  min-height: 160px;
}

.providers {
  grid-area: providers;
  display: grid;
  gap: 12px;
}

.node-void {
  grid-area: void;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 40px;
  background:
    repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 8px,
      rgba(255, 107, 107, 0.04) 8px,
      rgba(255, 107, 107, 0.04) 9px
    );
  border-color: rgba(255, 107, 107, 0.28);
}

.node-id {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.node h3 {
  margin: 8px 0 0;
  font-family: var(--display);
  font-size: 22px;
}

.node p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.key-pills {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.key-pills span {
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--lime-dim);
  color: var(--lime);
  font-family: var(--mono);
  font-size: 11px;
}

.pipe-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--ice);
  white-space: nowrap;
}

.pipes::before {
  content: "";
  position: absolute;
  top: 28%;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--lime), var(--ice));
}

.packet {
  position: absolute;
  top: calc(28% - 4px);
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--lime);
  animation: shoot 2.4s linear infinite;
}

.packet.p2 {
  animation-delay: 1.2s;
  background: var(--ice);
}

@keyframes shoot {
  0% {
    left: 0;
    opacity: 0;
  }
  12% {
    opacity: 1;
  }
  88% {
    opacity: 1;
  }
  100% {
    left: calc(100% - 9px);
    opacity: 0;
  }
}

.nav.is-scrolled {
  background: rgba(8, 9, 12, 0.88);
}

.will-reveal {
  opacity: 0;
  transform: translateY(16px);
}

.reveal {
  animation: rise 0.8s ease forwards;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: none;
  }
}

.void-meter {
  margin-left: auto;
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--mono);
  color: var(--void);
}

.void-meter strong {
  font-size: 42px;
  line-height: 1;
  color: var(--ink);
}

.bento {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-2);
}

.card.span-2 {
  grid-column: span 2;
}

.card.span-3 {
  grid-column: span 3;
}

.card.span-4 {
  grid-column: span 4;
}

.card.dark {
  background: #0c0e13;
}

.card-kicker {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--lime);
}

.card h3 {
  margin: 10px 0 0;
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 600;
}

.card p {
  margin: 10px 0 0;
  color: var(--muted);
}

.never-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 18px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.never-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}

.never-list li::before {
  content: "✕";
  color: var(--void);
  font-size: 12px;
}

.product-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: center;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  background: #0b0c10;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}

.panel-chrome,
.panel-modes {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}

.panel-modes {
  justify-content: flex-start;
  gap: 8px;
}

.mode {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 12px;
}

.mode.is-on {
  border-color: var(--lime);
  color: var(--lime);
}

.panel-body {
  padding: 18px;
}

kbd {
  display: inline-block;
  padding: 1px 7px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(243, 239, 228, 0.05);
  font-family: var(--mono);
  font-size: 0.86em;
  letter-spacing: 0.04em;
}

.vault.vault-panel {
  min-height: 0;
  padding: 28px;
  place-items: stretch;
}

.panel-hero {
  position: relative;
  z-index: 1;
  width: min(920px, 100%);
  margin: 0 auto;
}

.panel-results {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.ghost-input {
  margin: 0 0 16px;
  padding: 14px;
  border-radius: 12px;
  background: #14161c;
  color: #cfcab8;
  white-space: pre-line;
}

.flow-steps {
  max-width: var(--max);
  margin: 0 auto 4vh;
  padding: 0 6vw 4vh;
}

.feature-grid {
  grid-template-columns: 1fr 1fr;
}

.result-card {
  padding: 14px;
  border-radius: 12px;
  border: 1px solid rgba(216, 255, 62, 0.2);
}

.result-meta {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--lime);
}

.result-card p:last-child {
  margin: 0;
}

.feature-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 18px;
}

.feature-list li {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
}

.feature-list span {
  font-family: var(--mono);
  color: var(--lime);
}

.feature-list h3 {
  margin: 0;
  font-size: 18px;
}

.feature-list p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-2);
}

.step-n {
  margin: 0;
  font-family: var(--mono);
  color: var(--lime);
}

.steps h3 {
  margin: 8px 0 0;
  font-family: var(--serif);
  font-size: 22px;
}

.steps p {
  margin: 10px 0 0;
  color: var(--muted);
}

.steps a {
  color: var(--ice);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 36px;
}

.cta-row .cta-note {
  flex-basis: 100%;
}

.cta-note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.foot {
  padding: 32px 6vw 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.foot p {
  margin: 0;
}

.foot-meta {
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .flow,
  .bento,
  .product-grid,
  .steps,
  .panel-results,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .flow {
    grid-template-areas:
      "mac"
      "pipes"
      "providers"
      "void";
  }

  .card.span-2,
  .card.span-3,
  .card.span-4,
  .void-meter {
    grid-column: auto;
    margin-left: 0;
  }

  .pipes {
    min-height: 56px;
  }

  .pipes::before {
    top: 0;
    bottom: 0;
    left: 50%;
    right: auto;
    width: 1px;
    height: auto;
    background: linear-gradient(180deg, var(--lime), var(--ice));
  }

  .packet {
    top: 0;
    left: calc(50% - 4px);
    animation-name: shoot-down;
  }

  @keyframes shoot-down {
    0% {
      top: 0;
      opacity: 0;
    }
    12% {
      opacity: 1;
    }
    88% {
      opacity: 1;
    }
    100% {
      top: calc(100% - 9px);
      opacity: 0;
    }
  }

  .never-list {
    grid-template-columns: 1fr;
  }
}

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

  .pulse,
  .vault-ring,
  .packet,
  .reveal {
    animation: none;
  }

  .will-reveal,
  .reveal {
    opacity: 1;
    transform: none;
  }
}