:root {
  --cy: #00e5ff;
  --cy-dim: rgba(0, 229, 255, 0.35);
  --cy-faint: rgba(0, 229, 255, 0.08);
  --blue: #3d7bff;
  --orange: #ff8a3d;
  --bg: #030607;
  --text: #c8e6f0;
  --mono: 'JetBrains Mono', 'Cascadia Code', 'Consolas', 'SFMono-Regular', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', system-ui, sans-serif;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
  display: flex;
  flex-direction: column;
}

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

canvas { position: fixed; inset: 0; pointer-events: none; z-index: 0; }

#matrix-canvas { opacity: 0.28; }
#bg-canvas { z-index: 1; }

.grid-floor {
  position: fixed;
  left: 50%;
  bottom: 0;
  width: 180vw;
  height: 46vh;
  transform: translateX(-50%);
  background-image:
    linear-gradient(to right, rgba(0, 229, 255, 0.07) 1px, transparent 1px),
    linear-gradient(to top, rgba(0, 229, 255, 0.07) 1px, transparent 1px);
  background-size: 48px 48px;
  transform-origin: 50% 100%;
  perspective: 400px;
  transform: translateX(-50%) rotateX(74deg);
  mask-image: linear-gradient(to top, rgba(0,0,0,0.8), transparent 85%);
  -webkit-mask-image: linear-gradient(to top, rgba(0,0,0,0.8), transparent 85%);
  z-index: 1;
  pointer-events: none;
}

.scanline {
  position: fixed;
  left: 0;
  right: 0;
  height: 120px;
  top: -160px;
  background: linear-gradient(to bottom, transparent, rgba(0, 229, 255, 0.06), transparent);
  border-bottom: 1px solid rgba(0, 229, 255, 0.12);
  z-index: 4;
  pointer-events: none;
  animation: scan 9s linear infinite;
}

@keyframes scan {
  0% { top: -160px; }
  100% { top: 110vh; }
}

.vignette {
  position: fixed; inset: 0;
  background: radial-gradient(ellipse at 50% 35%, transparent 40%, rgba(0, 0, 0, 0.85) 100%);
  z-index: 3;
  pointer-events: none;
}

#mouse-glow {
  position: fixed;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.10) 0%, transparent 60%);
  transform: translate(-50%, -50%);
  z-index: 2;
  pointer-events: none;
  will-change: left, top;
}

.corner {
  position: fixed;
  width: 42px;
  height: 42px;
  z-index: 5;
  pointer-events: none;
  opacity: 0.8;
}
.corner::before, .corner::after {
  content: '';
  position: absolute;
  background: var(--cy);
  box-shadow: 0 0 8px var(--cy-dim);
}
.corner::before { width: 100%; height: 2px; }
.corner::after { width: 2px; height: 100%; }
.corner-tl { top: 14px; left: 14px; }
.corner-tr { top: 14px; right: 14px; transform: scaleX(-1); }
.corner-bl { bottom: 14px; left: 14px; transform: scaleY(-1); }
.corner-br { bottom: 14px; right: 14px; transform: scale(-1); }

.hud-top {
  position: relative;
  z-index: 6;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 28px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--cy-dim);
  border-bottom: 1px solid rgba(0, 229, 255, 0.12);
  background: linear-gradient(to bottom, rgba(0, 229, 255, 0.04), transparent);
}

.hud-left { display: flex; align-items: center; gap: 10px; }

.hud-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--cy);
  box-shadow: 0 0 10px var(--cy);
  animation: blink 1.6s steps(1) infinite;
}

@keyframes blink { 50% { opacity: 0.15; } }

#hud-status { color: var(--cy); text-shadow: 0 0 10px var(--cy-dim); }

.hud-sep { opacity: 0.4; }

#clock { text-shadow: 0 0 8px var(--cy-dim); }

main {
  position: relative;
  z-index: 5;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero {
  text-align: center;
  padding: 40px 24px 26px;
  animation: riseIn 1.1s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}

@keyframes riseIn {
  from { opacity: 0; transform: translateY(30px); filter: blur(6px); }
  to { opacity: 1; transform: none; filter: none; }
}

.brand-wrap { display: flex; align-items: center; justify-content: center; gap: 22px; }

.brand-logo {
  position: relative;
  width: 132px;
  height: 132px;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 0 18px rgba(0, 229, 255, 0.35));
}

.brand-logo::before {
  content: '';
  position: absolute;
  inset: -12px;
  background: conic-gradient(from 0deg, transparent 0%, var(--cy) 10%, transparent 22%, transparent 55%, #cffaff 66%, var(--cy) 76%, transparent 88%);
  border-radius: 50%;
  animation: spin 4s linear infinite;
  mask: radial-gradient(farthest-side, transparent calc(100% - 2px), #000 calc(100% - 1px));
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 2px), #000 calc(100% - 1px));
}

.brand-logo::after {
  content: '';
  position: absolute;
  inset: -24px;
  border: 1px dashed rgba(0, 229, 255, 0.22);
  border-radius: 50%;
  animation: spin 24s linear infinite reverse;
}

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

#brand-img {
  position: relative;
  z-index: 2;
  width: 134px;
  height: 134px;
  object-fit: contain;
  filter:
    drop-shadow(0 0 12px rgba(0, 229, 255, 0.5))
    drop-shadow(0 0 32px rgba(0, 229, 255, 0.25));
  transition: filter 0.4s ease, transform 0.4s ease;
}

.brand-logo:hover #brand-img {
  transform: scale(1.06);
  filter:
    drop-shadow(0 0 18px rgba(0, 229, 255, 0.85))
    drop-shadow(0 0 46px rgba(0, 229, 255, 0.45));
}

.brand-text { text-align: left; }

.logo-title {
  font-size: 58px;
  font-weight: 800;
  letter-spacing: 8px;
  line-height: 1;
  background: linear-gradient(100deg, #7df5ff 0%, var(--cy) 35%, var(--blue) 75%, #9fb8ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 22px rgba(0, 229, 255, 0.35));
  animation: glowShift 5s ease-in-out infinite;
}

@keyframes glowShift {
  0%, 100% { filter: drop-shadow(0 0 18px rgba(0, 229, 255, 0.3)); }
  50% { filter: drop-shadow(0 0 34px rgba(0, 229, 255, 0.55)); }
}

.logo-sub {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 5px;
  color: var(--cy-dim);
  text-transform: uppercase;
}

.hero-line {
  width: 0;
  height: 1px;
  margin: 26px auto 0;
  background: linear-gradient(to right, transparent, var(--cy-dim), transparent);
  animation: lineGrow 1.4s 0.5s ease-out forwards;
}

@keyframes lineGrow { to { width: min(560px, 80vw); } }

.hero-slogan {
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 4px;
  color: var(--cy);
  text-shadow: 0 0 12px var(--cy-dim);
  min-height: 22px;
}

.caret { animation: caretBlink 1s steps(1) infinite; }

@keyframes caretBlink { 50% { opacity: 0; } }

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  max-width: 1080px;
  margin: 30px auto 20px;
  padding: 0 26px;
  perspective: 1200px;
}

.card {
  position: relative;
  --cr: 0;
  --cg: 229;
  --cb: 255;
  --c-hi: #bffaff;
  min-height: 270px;
  padding: 24px 26px;
  border-radius: 16px;
  background: linear-gradient(160deg, rgba(var(--cr), var(--cg), var(--cb), 0.07), rgba(0, 20, 30, 0.35) 45%, rgba(var(--cr), var(--cg), var(--cb), 0.03));
  border: 1px solid rgba(var(--cr), var(--cg), var(--cb), 0.22);
  overflow: hidden;
  transform-style: preserve-3d;
  will-change: transform;
  transition: border-color 0.35s, box-shadow 0.35s;
  cursor: pointer;
  animation: cardIn 0.9s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}

.card[data-name="消防"] { --cr: 255; --cg: 56; --cb: 38; --c-hi: #ffc4b0; }
.card[data-name="巡查"] { --cr: 56; --cg: 124; --cb: 255; --c-hi: #b6caff; }

.card:nth-child(1) { animation-delay: 0.45s; }
.card:nth-child(2) { animation-delay: 0.6s; }
.card:nth-child(3) { animation-delay: 0.75s; }

@keyframes cardIn {
  from { opacity: 0; transform: translateY(46px) scale(0.94); filter: blur(8px); }
  to { opacity: 1; transform: none; filter: none; }
}

.card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 16px;
  padding: 1.5px;
  background: conic-gradient(from var(--ang, 0deg), transparent 0%, transparent 26%, rgb(var(--cr), var(--cg), var(--cb)) 38%, var(--c-hi) 45%, #ffffff 50%, var(--c-hi) 55%, rgb(var(--cr), var(--cg), var(--cb)) 62%, transparent 74%, transparent 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  animation: borderSpin 3s linear infinite;
  pointer-events: none;
  filter: drop-shadow(0 0 6px rgba(var(--cr), var(--cg), var(--cb), 0.9));
}

@property --ang { syntax: '<angle>'; initial-value: 0deg; inherits: false; }

@keyframes borderSpin { to { --ang: 360deg; } }

.card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  background: radial-gradient(130% 100% at 50% -10%, rgba(var(--cr), var(--cg), var(--cb), 0.25), transparent 55%),
    radial-gradient(80% 120% at 50% 130%, rgba(var(--cr), var(--cg), var(--cb), 0.22), transparent 60%);
  opacity: 0;
  pointer-events: none;
}

.card:hover::after { animation: glowPulse 1.6s ease-in-out infinite; }

@keyframes glowPulse {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 0.9; }
}

.card:hover::before { opacity: 1; }

.card:hover {
  border-color: rgba(var(--cr), var(--cg), var(--cb), 0.95);
  box-shadow:
    0 0 26px rgba(var(--cr), var(--cg), var(--cb), 0.55),
    0 0 70px rgba(var(--cr), var(--cg), var(--cb), 0.25),
    0 0 140px rgba(var(--cr), var(--cg), var(--cb), 0.12),
    inset 0 0 40px rgba(var(--cr), var(--cg), var(--cb), 0.14);
}

.card-bg { position: absolute; inset: 0; pointer-events: none; }

.hex {
  position: absolute;
  right: -34px;
  top: -28px;
  width: 120px;
  opacity: 0.08;
  fill: rgb(var(--cr), var(--cg), var(--cb));
  transition: transform 0.5s ease, opacity 0.5s ease;
}

.card:hover .hex {
  transform: rotate(40deg) scale(1.25);
  opacity: 0.22;
  filter: drop-shadow(0 0 10px rgba(var(--cr), var(--cg), var(--cb), 0.6));
}

.card-top {
  position: relative;
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 2px;
}

.card-index { color: var(--cy-dim); }

.card-status {
  color: rgb(var(--cr), var(--cg), var(--cb));
  font-size: 10px;
  padding: 2px 8px;
  border: 1px solid rgba(var(--cr), var(--cg), var(--cb), 0.35);
  border-radius: 3px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.card-status::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: rgb(var(--cr), var(--cg), var(--cb));
  box-shadow: 0 0 6px rgb(var(--cr), var(--cg), var(--cb));
  animation: blink 1.6s steps(1) infinite;
}

.card-icon {
  position: relative;
  margin-top: 22px;
  width: 62px;
  height: 62px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-icon svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: rgb(var(--cr), var(--cg), var(--cb));
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 8px rgba(var(--cr), var(--cg), var(--cb), 0.6));
  transition: transform 0.4s cubic-bezier(0.2, 0.7, 0.2, 1), filter 0.4s;
}

.card-icon::after {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  border: 1px dashed rgba(var(--cr), var(--cg), var(--cb), 0.35);
  animation: spin 14s linear infinite;
}

.card:hover .card-icon svg {
  transform: scale(1.2) translateY(-3px);
  filter: drop-shadow(0 0 14px rgb(var(--cr), var(--cg), var(--cb))) drop-shadow(0 0 32px rgba(var(--cr), var(--cg), var(--cb), 0.6));
}

.card:hover .card-icon::after {
  border-color: rgba(var(--cr), var(--cg), var(--cb), 0.7);
  animation-duration: 3s;
  box-shadow: 0 0 14px rgba(var(--cr), var(--cg), var(--cb), 0.4) inset;
}

.card h2 {
  position: relative;
  margin-top: 18px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #eaffff;
  text-shadow: 0 0 16px rgba(var(--cr), var(--cg), var(--cb), 0.25);
  transition: color 0.35s, text-shadow 0.35s;
}

.card:hover h2 {
  color: #ffffff;
  text-shadow: 0 0 14px rgba(var(--cr), var(--cg), var(--cb), 0.8), 0 0 34px rgba(var(--cr), var(--cg), var(--cb), 0.45), 0 0 70px rgba(var(--cr), var(--cg), var(--cb), 0.25);
}

.card-desc {
  position: relative;
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 1px;
  color: rgba(150, 200, 215, 0.65);
  transition: color 0.35s;
}

.card:hover .card-desc { color: rgba(180, 230, 245, 0.9); }

.card-enter {
  position: absolute;
  left: 26px;
  right: 26px;
  bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--cy-dim);
  padding-top: 14px;
  border-top: 1px solid rgba(var(--cr), var(--cg), var(--cb), 0.14);
  transition: color 0.3s;
}

.card-enter svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  transition: transform 0.35s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.card:hover .card-enter { color: rgb(var(--cr), var(--cg), var(--cb)); text-shadow: 0 0 12px rgba(var(--cr), var(--cg), var(--cb), 0.6); }
.card:hover .card-enter svg { transform: translateX(8px); filter: drop-shadow(0 0 6px rgba(var(--cr), var(--cg), var(--cb), 0.8)); }

.card-scan {
  position: absolute;
  left: 0; right: 0;
  height: 3px;
  top: -6px;
  background: linear-gradient(to right, transparent, var(--c-hi) 40%, #ffffff 50%, var(--c-hi) 60%, transparent);
  opacity: 0;
  transition: opacity 0.2s;
  filter: drop-shadow(0 0 10px rgb(var(--cr), var(--cg), var(--cb)));
}

.card:hover .card-scan {
  opacity: 1;
  animation: cardScan 1.6s ease-in-out infinite;
}

@keyframes cardScan {
  0% { top: -4px; }
  55% { top: 100%; }
  100% { top: 100%; }
}

.burst-particle {
  position: fixed;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 7;
  transform: translate(-50%, -50%);
  animation: burstFly 0.7s ease-out forwards;
}

@keyframes burstFly {
  from { transform: translate(-50%, -50%); opacity: 1; box-shadow: 0 0 8px currentColor; }
  to { transform: translate(calc(-50% + var(--dx)), calc(-50% + var(--dy))) scale(0.2); opacity: 0; }
}

.site-footer {
  position: relative;
  z-index: 6;
  padding: 0 26px 22px;
  text-align: center;
}

.footer-line {
  width: 0;
  height: 1px;
  margin: 0 auto 14px;
  background: linear-gradient(to right, transparent, rgba(0, 229, 255, 0.3), transparent);
  animation: lineGrow 1.4s 1.1s ease-out forwards;
}

.footer-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 1.5px;
  color: rgba(150, 200, 215, 0.5);
  font-family: var(--mono);
  opacity: 0;
  animation: riseIn 1s 1.3s ease-out both;
}

.footer-text a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: rgba(0, 229, 255, 0.7);
  transition: color 0.3s, text-shadow 0.3s;
}

.footer-text a svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
}

.footer-text a:hover {
  color: var(--cy);
  text-shadow: 0 0 10px var(--cy-dim);
}

@media (max-width: 900px) {
  .cards { grid-template-columns: 1fr; max-width: 460px; }
  .card { min-height: 240px; }
  .logo-title { font-size: 42px; letter-spacing: 6px; }
}

@media (max-width: 480px) {
  .brand-wrap { flex-direction: column; gap: 14px; }
  .brand-text { text-align: center; }
  .hero-slogan { font-size: 12px; letter-spacing: 2px; }
  .hud-top { padding: 14px 16px; font-size: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}