:root {
  --bg: #05070b;
  --panel: rgba(8, 16, 24, 0.78);
  --line: rgba(0, 240, 255, 0.28);
  --cyan: #00f0ff;
  --green: #7cff6b;
  --amber: #ffcc66;
  --red: #ff5d73;
  --text: #d7f6ff;
  --muted: #7ea0ad;
  --shadow: 0 0 24px rgba(0, 240, 255, 0.18);
  --mono: "Share Tech Mono", ui-monospace, monospace;
  --display: "Orbitron", "Noto Sans SC", sans-serif;
  --sans: "Noto Sans SC", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  background: radial-gradient(1200px 600px at 20% -10%, #0b2230 0%, transparent 55%),
              radial-gradient(900px 500px at 100% 10%, #12200f 0%, transparent 50%),
              var(--bg);
  color: var(--text);
  font-family: var(--sans);
  overflow-x: hidden;
}

#matrix {
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.22;
  pointer-events: none;
}
.scanline {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0 2px,
    rgba(0, 0, 0, 0.12) 2px 3px
  );
}
.vignette {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0,0,0,.55) 100%);
}

.topbar, main, footer { position: relative; z-index: 2; }

.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 28px;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  background: rgba(5, 7, 11, 0.72);
}
.brand { display: flex; align-items: baseline; gap: 10px; cursor: pointer; }
.brand-mark { color: var(--green); font-family: var(--mono); }
.brand-name {
  font-family: var(--display);
  letter-spacing: 0.18em;
  font-size: 14px;
}
.brand-sub { color: var(--muted); font-size: 12px; }
.nav { display: flex; flex-wrap: wrap; gap: 6px; flex: 1; }
.nav button {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  padding: 6px 10px;
  cursor: pointer;
}
.nav button:hover, .nav button.active {
  color: var(--cyan);
  border-color: var(--line);
  box-shadow: var(--shadow);
}
.hud { display: flex; gap: 14px; font-family: var(--mono); font-size: 12px; }
.hud-item strong { color: var(--green); margin-left: 6px; }

main { max-width: 1180px; margin: 0 auto; padding: 24px 20px 80px; }
.panel {
  margin: 28px 0 64px;
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  clip-path: polygon(0 12px, 12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}
.section-head h2, .hero h1 {
  font-family: var(--display);
  margin: 6px 0 10px;
  letter-spacing: 0.04em;
}
.kicker {
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  margin: 0;
}
.lead, .section-head p { color: var(--muted); max-width: 64ch; }

.hero { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 28px; }
.hero h1 { font-size: clamp(28px, 4vw, 46px); line-height: 1.2; }
.hero-actions { display: flex; gap: 12px; margin: 20px 0; }
.hero-stats { display: flex; gap: 24px; padding: 0; list-style: none; }
.hero-stats span {
  display: block;
  font-family: var(--display);
  color: var(--green);
  font-size: 28px;
}

.btn {
  border: 1px solid var(--line);
  background: rgba(0, 240, 255, 0.08);
  color: var(--text);
  font-family: var(--mono);
  padding: 10px 16px;
  cursor: pointer;
  transition: 0.15s transform, 0.15s box-shadow;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn.primary { border-color: var(--cyan); color: var(--cyan); }
.btn.ghost { background: transparent; }
.btn.danger { border-color: var(--red); color: var(--red); background: rgba(255,93,115,.08); }

.hero-terminal {
  border: 1px solid var(--line);
  background: #02060a;
  min-height: 320px;
  display: flex;
  flex-direction: column;
}
.term-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  color: var(--muted);
  font-size: 12px;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--red); display: inline-block; }
.dot:nth-child(2) { background: var(--amber); }
.dot:nth-child(3) { background: var(--green); }
.term-body {
  flex: 1;
  padding: 12px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.55;
  overflow: auto;
  max-height: 260px;
}
.term-body .ok { color: var(--green); }
.term-body .warn { color: var(--amber); }
.term-body .err { color: var(--red); }
.term-input {
  display: flex;
  gap: 8px;
  border-top: 1px solid var(--line);
  padding: 8px 12px;
  font-family: var(--mono);
}
.term-input input {
  flex: 1;
  background: transparent;
  border: 0;
  color: var(--cyan);
  outline: none;
  font-family: inherit;
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.card {
  border: 1px solid var(--line);
  padding: 18px;
  background: rgba(0, 0, 0, 0.28);
}
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.field span { color: var(--muted); font-size: 13px; }
input, select {
  background: #071018;
  border: 1px solid var(--line);
  color: var(--text);
  padding: 10px 12px;
  font-family: var(--mono);
}
.meter {
  height: 10px;
  background: #0b1820;
  border: 1px solid var(--line);
  margin: 8px 0;
}
#pwdBar { height: 100%; width: 0; background: var(--red); transition: width 0.25s, background 0.25s; }
.meter-label { font-family: var(--mono); color: var(--amber); }
.kv { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 16px; font-size: 13px; }
.kv b { color: var(--cyan); font-weight: 500; }
.tips { margin-top: 12px; color: var(--muted); font-size: 14px; }
.lore p { color: var(--muted); }
.mini-chart { display: flex; align-items: flex-end; gap: 8px; height: 90px; margin-top: 16px; }
.mini-chart i {
  display: block;
  width: 28px;
  background: linear-gradient(to top, var(--cyan), var(--green));
  opacity: 0.85;
}
.mini-chart span { font-size: 11px; color: var(--muted); font-family: var(--mono); }

.skill-layout { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 16px; align-items: center; }
.skill-map { width: 100%; height: auto; }
.skill-map .link { stroke: url(#lineGlow); stroke-width: 1.4; opacity: 0.7; }
.skill-map .node { cursor: pointer; }
.skill-map .node circle { fill: #061018; stroke: var(--cyan); stroke-width: 2; }
.skill-map .node text, .skill-map .core text {
  fill: var(--text);
  font-size: 11px;
  text-anchor: middle;
  font-family: var(--display);
}
.skill-map .core circle { fill: #082018; stroke: var(--green); stroke-width: 3; }
.skill-map .node:hover circle, .skill-map .node.active circle {
  fill: #103040;
  filter: drop-shadow(0 0 8px var(--cyan));
}
.skill-card ul { color: var(--muted); padding-left: 18px; }

.mail header { display: grid; gap: 8px; border-bottom: 1px solid var(--line); padding-bottom: 10px; }
.mail small { color: var(--muted); display: block; }
.mail-body { padding-top: 12px; line-height: 1.7; color: #cfe8ef; }
.mail-body .url { color: var(--amber); font-family: var(--mono); }
.choice-row { display: flex; gap: 10px; margin: 12px 0; }
.explain { min-height: 48px; color: var(--muted); }
.scoreline { font-family: var(--mono); }

.codeblock {
  background: #02080d;
  border: 1px solid var(--line);
  padding: 12px;
  overflow-x: auto;
  color: var(--green);
  min-height: 72px;
}
.hint { color: var(--muted); font-size: 13px; }
.range input { padding: 0; }

.rules { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }
.rule {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 13px;
  border: 1px dashed var(--line);
  padding: 8px 10px;
}
.rule.allow { color: var(--green); }
.rule.deny { color: var(--red); }
.rule-form { display: grid; grid-template-columns: 1fr 1fr 1fr auto; gap: 8px; }
.pkt-board { display: flex; flex-direction: column; gap: 8px; min-height: 180px; }
.pkt {
  font-family: var(--mono);
  font-size: 13px;
  padding: 8px 10px;
  border-left: 3px solid var(--amber);
  background: #071018;
}
.pkt.pass { border-color: var(--green); }
.pkt.drop { border-color: var(--red); opacity: 0.75; }

.opts { display: flex; flex-direction: column; gap: 8px; }
.opts button {
  text-align: left;
  background: #071018;
  border: 1px solid var(--line);
  color: var(--text);
  padding: 10px 12px;
  cursor: pointer;
  font-family: var(--sans);
}
.opts button:hover { border-color: var(--cyan); }
.opts button.good { border-color: var(--green); color: var(--green); }
.opts button.bad { border-color: var(--red); color: var(--red); }
.progress { font-family: var(--mono); color: var(--cyan); }

.badge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}
.badge {
  border: 1px solid var(--line);
  padding: 16px;
  opacity: 0.35;
  filter: grayscale(0.8);
  transition: 0.2s;
}
.badge.on {
  opacity: 1;
  filter: none;
  box-shadow: var(--shadow);
}
.badge h4 { margin: 0 0 6px; font-family: var(--display); font-size: 14px; color: var(--green); }
.badge p { margin: 0; color: var(--muted); font-size: 13px; }

footer {
  text-align: center;
  color: var(--muted);
  padding: 24px;
  border-top: 1px solid var(--line);
  font-size: 13px;
}

@media (max-width: 900px) {
  .hero, .grid-2, .skill-layout { grid-template-columns: 1fr; }
  .topbar { flex-wrap: wrap; }
  .rule-form { grid-template-columns: 1fr 1fr; }
}