:root {
  --void: #020704;
  --panel: #06110c;
  --panel-2: #0a1a13;
  --line: rgba(80, 255, 170, 0.16);
  --line-strong: rgba(80, 255, 170, 0.38);
  --phos: #3dff9a;
  --phos-dim: #1a8f58;
  --ice: #8ce8ff;
  --warn: #e8b84a;
  --text: #d7ffe9;
  --muted: #6f9a82;
  --danger: #ff5d6c;
  --mono: "IBM Plex Mono", "Sarasa Mono SC", "Cascadia Mono", "Consolas", "Microsoft YaHei", monospace;
  --sans: "IBM Plex Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body.vault-body {
  color: var(--text);
  font-family: var(--sans);
  background: var(--void);
  overflow-x: hidden;
}

.vault-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(61, 255, 154, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 255, 154, 0.045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 20%, #000 20%, transparent 75%);
}
.vault-scan {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 2px,
    rgba(0, 0, 0, 0.18) 3px
  );
  opacity: 0.35;
}
.vault-scan::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 18%;
  background: linear-gradient(transparent, rgba(61, 255, 154, 0.07), transparent);
  animation: vault-sweep 7.5s linear infinite;
}
@keyframes vault-sweep {
  0% { top: -20%; }
  100% { top: 110%; }
}
.vault-vignette {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  box-shadow: inset 0 0 180px 40px rgba(0, 0, 0, 0.72);
}

.vault-wrap { position: relative; z-index: 3; }

.vault-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 22px 10px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.vault-top b { color: var(--phos); font-weight: 600; }
.vault-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--phos);
  box-shadow: 0 0 8px var(--phos);
  margin-right: 8px;
  animation: vault-pulse 1.8s ease-in-out infinite;
}
@keyframes vault-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.vault-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 16px 22px 0;
}
.vault-nav a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  background: rgba(8, 28, 18, 0.7);
  padding: 8px 12px;
  border-radius: 2px;
}
.vault-nav a:hover { border-color: var(--line-strong); color: var(--phos); }
.vault-nav a.primary {
  background: var(--phos);
  color: #021108;
  border-color: var(--phos);
  font-weight: 700;
}

.vault-hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 48px 22px 28px;
}
.vault-kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--ice);
  margin: 0 0 16px;
}
.vault-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(2.1rem, 6vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 700;
  text-shadow: 0 0 28px rgba(61, 255, 154, 0.18);
}
.vault-hero h1 em {
  font-style: normal;
  color: var(--phos);
}
.vault-lead {
  max-width: 40em;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.75;
  margin: 0 0 28px;
}

.vault-term {
  max-width: 640px;
  background: #030a07;
  border: 1px solid var(--line-strong);
  box-shadow: 0 0 0 1px rgba(61, 255, 154, 0.06), 0 20px 60px rgba(0, 0, 0, 0.45);
}
.vault-term-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.08em;
}
.vault-term-bar i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}
.vault-term-bar i:nth-child(1) { background: var(--danger); }
.vault-term-bar i:nth-child(2) { background: var(--warn); }
.vault-term-bar i:nth-child(3) { background: var(--phos); }
.vault-term pre {
  margin: 0;
  padding: 16px 16px 20px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--phos);
  white-space: pre-wrap;
  min-height: 148px;
}
.vault-cursor {
  display: inline-block;
  width: 8px;
  height: 1em;
  background: var(--phos);
  vertical-align: -2px;
  animation: vault-blink 1s step-end infinite;
}
@keyframes vault-blink {
  50% { opacity: 0; }
}

.vault-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-top: 48px;
}
.vault-strip article {
  background: var(--panel);
  padding: 22px 20px;
}
.vault-strip h3 {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--phos);
}
.vault-strip p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }

.vault-section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 48px 22px;
}
.vault-section h2 {
  margin: 0 0 8px;
  font-size: clamp(1.4rem, 3vw, 2rem);
}
.vault-section .sub {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  margin: 0 0 28px;
}

.vault-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
}
.vault-card {
  position: relative;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  padding: 18px 16px 16px;
  min-height: 148px;
}
.vault-card::before,
.vault-card::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border-color: var(--phos);
  border-style: solid;
  opacity: 0.7;
}
.vault-card::before { top: 6px; left: 6px; border-width: 1px 0 0 1px; }
.vault-card::after { bottom: 6px; right: 6px; border-width: 0 1px 1px 0; }
.vault-card h3 {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ice);
}
.vault-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }

.vault-plans {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}
.vault-plan {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 20px 16px;
}
.vault-plan.featured {
  border-color: var(--phos);
  box-shadow: 0 0 24px rgba(61, 255, 154, 0.12);
}
.vault-plan .tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--phos);
  margin: 0 0 10px;
}
.vault-plan h3 { margin: 0 0 8px; font-size: 1rem; }
.vault-plan .price {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--text);
}
.vault-plan .price small { font-size: 0.7rem; color: var(--muted); font-weight: 500; }
.vault-plan ul {
  margin: 0;
  padding-left: 1.1em;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.vault-note {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 22px 48px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}
.vault-note a { color: var(--ice); }

.vault-foot {
  border-top: 1px solid var(--line);
  padding: 22px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

@media (max-width: 720px) {
  .vault-strip { grid-template-columns: 1fr; }
  .vault-top { flex-direction: column; align-items: flex-start; }
  .vault-hero { padding-top: 28px; }
}