:root {
  color-scheme: dark;
  --bg: #08090d;
  --panel: #10141b;
  --panel-strong: #151b24;
  --text: #edf4ff;
  --muted: #a6b2c4;
  --dim: #657386;
  --line: #293241;
  --green: #57ff9a;
  --cyan: #45d9ff;
  --amber: #f2c86b;
  --magenta: #ff5ea8;
  --red: #ff5f57;
  --blue: #7aa2ff;
  --shadow: rgba(0, 0, 0, 0.42);
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

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

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 28px;
  background: rgba(8, 9, 13, 0.78);
  border-bottom: 1px solid rgba(69, 217, 255, 0.16);
  backdrop-filter: blur(16px);
}

.brand,
.nav-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-size: 0.94rem;
  font-weight: 700;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--cyan);
  color: var(--green);
  background: #0d1519;
}

.nav-links {
  gap: 22px;
  color: var(--muted);
  font-size: 0.82rem;
}

.github-link {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  margin-left: 2px;
  color: var(--muted);
}

.github-link svg {
  width: 19px;
  height: 19px;
  fill: currentColor;
}

.nav-links a:hover,
.site-footer a:hover {
  color: var(--cyan);
}

.hero {
  position: relative;
  min-height: 82vh;
  padding: 118px 24px 56px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

#packet-field,
.hero-scrim {
  position: absolute;
  inset: 0;
}

#packet-field {
  width: 100%;
  height: 100%;
  background: #08090d;
}

.hero-scrim {
  background: rgba(8, 9, 13, 0.36);
  pointer-events: none;
}

.hero-copy,
.hero-commands,
.hero-inner {
  position: relative;
  z-index: 1;
}

.hero-inner {
  width: min(100%, 980px);
  margin: 0 auto;
  padding-top: 64px;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow,
.kicker {
  margin: 0 0 16px;
  color: var(--amber);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 18px;
  font-size: 5.35rem;
  line-height: 0.92;
  font-weight: 800;
}

.hero-lede {
  max-width: 740px;
  margin-bottom: 22px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.7;
}

.problem-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.problem-strip span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid rgba(242, 200, 107, 0.34);
  border-radius: 6px;
  color: #f7d891;
  background: rgba(242, 200, 107, 0.08);
  font-size: 0.76rem;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 700;
}

.button.primary {
  color: #06100b;
  background: var(--green);
  border-color: var(--green);
}

.button.secondary {
  color: var(--text);
  background: rgba(16, 20, 27, 0.78);
}

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

.hero-commands,
.code-panel,
.command-line,
.workflow > div,
.signal-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(16, 20, 27, 0.86);
  box-shadow: 0 20px 80px var(--shadow);
}

.hero-commands {
  width: min(100%, 680px);
  overflow: hidden;
}

.terminal-top {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-strong);
}

.terminal-top span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--red);
}

.terminal-top span:nth-child(2) {
  background: var(--amber);
}

.terminal-top span:nth-child(3) {
  background: var(--green);
}

.terminal-top strong {
  margin-left: 6px;
  color: var(--dim);
  font-size: 0.74rem;
}

pre {
  margin: 0;
  white-space: pre-wrap;
}

.hero-commands pre,
.code-panel {
  padding: 22px;
  color: #d7e6f8;
  font-size: 0.86rem;
  line-height: 1.75;
}

.sh-prompt {
  color: var(--green);
}

.sh-bin {
  color: var(--cyan);
  font-weight: 800;
}

.sh-cmd {
  color: var(--amber);
  font-weight: 700;
}

.sh-flag {
  color: var(--magenta);
}

.sh-path {
  color: #d7e6f8;
}

.signal-band,
.command-section,
.config-section,
.encryption-section,
.workflow-section {
  padding: 86px 48px;
}

.signal-grid,
.command-grid,
.workflow,
.section-heading,
.code-panel {
  max-width: 1160px;
  margin-left: auto;
  margin-right: auto;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.signal-grid article,
.workflow > div {
  padding: 26px;
}

h2 {
  margin-bottom: 16px;
  font-size: 2.35rem;
  line-height: 1.12;
}

h3 {
  margin-bottom: 10px;
  font-size: 1rem;
}

.signal-grid p,
.workflow p,
.section-heading p {
  color: var(--muted);
  line-height: 1.75;
}

.signal-grid code,
.section-heading code {
  color: var(--text);
  font-weight: 800;
}

.section-heading {
  margin-bottom: 24px;
}

.command-section,
.encryption-section,
.workflow-section {
  background: #0b0d12;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.command-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.command-line {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  align-items: center;
  min-height: 52px;
  padding: 0 18px;
  overflow: hidden;
}

.command-line code {
  overflow-wrap: anywhere;
  color: #dce8f7;
}

.prompt {
  color: var(--green);
}

.code-panel {
  overflow: auto;
  border-color: rgba(69, 217, 255, 0.28);
  background: #0c1118;
}

.tok-section {
  color: var(--cyan);
  font-weight: 800;
}

.tok-key {
  color: var(--green);
}

.tok-op,
.tok-punct {
  color: var(--dim);
}

.tok-string {
  color: var(--amber);
}

.tok-comment {
  color: var(--dim);
}

.tok-bool {
  color: var(--magenta);
}

.encryption-section .code-panel + .code-panel {
  margin-top: 14px;
}

.keygen-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 14px;
  max-width: 1160px;
  margin: 0 auto;
}

.keygen-detail-grid .code-panel {
  margin: 0;
}

.keygen-files {
  display: grid;
  gap: 6px;
}

.keygen-file-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 136px;
  gap: 18px;
  align-items: baseline;
}

.keygen-file-row code,
.keygen-file-row span {
  min-width: 0;
}

.code-caption {
  max-width: 1160px;
  margin: 14px auto 8px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

.code-caption code {
  color: var(--text);
}

.security-note {
  padding: 10px 14px;
  border: 1px solid rgba(242, 200, 107, 0.4);
  border-radius: 6px;
  background: rgba(242, 200, 107, 0.08);
  color: #f2d997;
}

.security-note code {
  color: #ffffff;
  font-weight: 800;
}

.encryption-section .signal-grid {
  margin-top: 18px;
}

.workflow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.step {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--magenta);
  font-size: 0.76rem;
  font-weight: 800;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  min-height: 86px;
  color: var(--dim);
  border-top: 1px solid var(--line);
}

@media (max-width: 920px) {
  .hero {
    padding: 116px 24px 48px;
  }

  .hero-inner {
    padding-top: 26px;
  }

  h1 {
    font-size: 4.4rem;
  }

  .signal-grid,
  .keygen-detail-grid,
  .workflow {
    grid-template-columns: 1fr 1fr;
  }

  .signal-band,
  .command-section,
  .config-section,
  .encryption-section,
  .workflow-section {
    padding: 66px 24px;
  }

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

@media (max-width: 640px) {
  .site-header {
    height: auto;
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding: 16px 18px;
  }

  .nav-links {
    gap: 16px;
  }

  .hero {
    min-height: 78vh;
    padding-top: 126px;
    padding-bottom: 40px;
  }

  .hero-inner {
    padding-top: 0;
  }

  .hero-scrim {
    background: rgba(8, 9, 13, 0.72);
  }

  h1 {
    font-size: 3.1rem;
  }

  h2 {
    font-size: 1.72rem;
  }

  .hero-lede {
    font-size: 0.94rem;
    line-height: 1.58;
  }

  .signal-grid,
  .keygen-detail-grid,
  .workflow {
    grid-template-columns: 1fr;
  }

  .hero-commands {
    display: none;
  }

  .code-panel {
    font-size: 0.78rem;
  }

  .keygen-file-row {
    grid-template-columns: 1fr;
    gap: 2px;
  }
}