:root {
  --bg: #080c0a;
  --panel: #111a15;
  --panel2: #17251e;
  --text: #edf7ee;
  --muted: #a7b8aa;
  --line: rgba(174, 255, 193, 0.18);
  --accent: #9dff9f;
  --accent2: #ffc76a;
  --danger: #ff6b58;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: radial-gradient(circle at top left, #183f2b 0, #080c0a 35%, #030403 100%);
  color: var(--text);
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.6;
}

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.05;
  background-image: linear-gradient(90deg, #fff 1px, transparent 1px),
    linear-gradient(#fff 1px, transparent 1px);
  background-size: 3px 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
  background: rgba(8, 12, 10, 0.72);
  backdrop-filter: blur(16px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--accent);
  background: rgba(157, 255, 159, 0.08);
  color: var(--accent);
  font-weight: 800;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.brand b,
.brand small {
  overflow-wrap: normal;
}

nav {
  display: flex;
  gap: 24px;
}

nav a {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

nav a:hover {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.section {
  padding: 86px clamp(20px, 6vw, 96px);
}

.hero {
  display: grid;
  min-height: calc(100vh - 78px);
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  align-items: center;
  gap: 56px;
}

.eyebrow {
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  position: relative;
  z-index: 1;
  margin-bottom: 16px;
  font-size: clamp(46px, 7vw, 92px);
  line-height: 0.98;
  letter-spacing: 0;
}

.hero-copy {
  position: relative;
}

.hero-title-wrap {
  position: relative;
  isolation: isolate;
}

.title-cn,
.title-en {
  display: block;
}

.title-cn {
  margin-bottom: 8px;
  font-weight: 950;
}

.title-en {
  color: #dfffe3;
  font-size: 0.72em;
  line-height: 1.02;
  text-shadow: 0 0 24px rgba(157, 255, 159, 0.16);
}

.signal-word {
  position: absolute;
  z-index: 0;
  top: 18%;
  left: -3%;
  margin: 0;
  color: transparent;
  font-family: "Courier New", Consolas, monospace;
  font-size: clamp(52px, 8vw, 118px);
  font-weight: 900;
  line-height: 0.82;
  letter-spacing: 0;
  white-space: nowrap;
  pointer-events: none;
  background:
    radial-gradient(circle, rgba(157, 255, 159, 0.22) 0 1px, transparent 1.4px),
    linear-gradient(90deg, rgba(157, 255, 159, 0.2), rgba(157, 255, 159, 0.02) 70%);
  background-size: 7px 7px, 100% 100%;
  background-clip: text;
  -webkit-background-clip: text;
  filter: drop-shadow(0 0 18px rgba(157, 255, 159, 0.14));
  mask-image: linear-gradient(90deg, transparent 0, #000 12%, #000 58%, transparent 100%);
  opacity: 0.34;
  animation: signalFade 4.8s ease-in-out infinite;
}

.hero-tagline {
  margin-bottom: 24px;
  font-size: clamp(24px, 3.4vw, 44px);
  font-weight: 900;
  line-height: 1.12;
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(32px, 4.4vw, 58px);
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 22px;
}

.lead {
  max-width: 760px;
  color: #d5e5d7;
  font-size: 20px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.hero-tags span {
  padding: 6px 11px;
  border: 1px solid rgba(174, 255, 193, 0.16);
  border-radius: 999px;
  background: rgba(157, 255, 159, 0.035);
  color: rgba(213, 229, 215, 0.78);
  font-size: 13px;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  font-weight: 800;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #051008;
}

.button.ghost {
  background: rgba(255, 255, 255, 0.03);
}

.command-card {
  position: relative;
  min-height: 520px;
  padding: 28px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(20, 44, 31, 0.82), rgba(8, 12, 10, 0.92));
  box-shadow: 0 30px 120px rgba(0, 0, 0, 0.45), inset 0 0 80px rgba(157, 255, 159, 0.05);
}

.command-card::before {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px dashed rgba(157, 255, 159, 0.24);
}

.radar {
  position: relative;
  width: min(88%, 360px);
  aspect-ratio: 1;
  margin: 32px auto;
  border: 1px solid rgba(157, 255, 159, 0.45);
  border-radius: 50%;
  overflow: hidden;
  background:
    radial-gradient(circle at center, rgba(157, 255, 159, 0.22) 0 2px, transparent 3px),
    repeating-radial-gradient(circle, transparent 0 33px, rgba(157, 255, 159, 0.12) 34px 35px),
    radial-gradient(circle, rgba(157, 255, 159, 0.12), rgba(157, 255, 159, 0.02) 54%, rgba(0, 0, 0, 0.32) 100%);
  box-shadow:
    0 0 32px rgba(157, 255, 159, 0.24),
    inset 0 0 42px rgba(157, 255, 159, 0.16);
}

.radar::before,
.radar::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  pointer-events: none;
}

.radar::before {
  background:
    linear-gradient(90deg, transparent calc(50% - 1px), rgba(157, 255, 159, 0.08) 50%, transparent calc(50% + 1px)),
    linear-gradient(0deg, transparent calc(50% - 1px), rgba(157, 255, 159, 0.08) 50%, transparent calc(50% + 1px)),
    radial-gradient(circle, transparent 0 62%, rgba(157, 255, 159, 0.08) 63%, transparent 64%);
}

.radar::after {
  border: 1px solid rgba(157, 255, 159, 0.16);
  box-shadow: inset 0 0 24px rgba(157, 255, 159, 0.12);
}

.radar-sweep {
  position: absolute;
  inset: -1px;
  border-radius: 50%;
  background: conic-gradient(from -26deg, rgba(157, 255, 159, 0.52) 0deg, rgba(157, 255, 159, 0.2) 18deg, transparent 62deg 360deg);
  mix-blend-mode: screen;
  transform-origin: center;
  animation: radarSweep 3.6s linear infinite;
}

.radar-blip {
  position: absolute;
  left: var(--x, 50%);
  top: var(--y, 50%);
  z-index: 2;
  width: 10px;
  height: 10px;
  border: 1px solid rgba(255, 210, 188, 0.75);
  border-radius: 50%;
  background: var(--danger);
  box-shadow: 0 0 14px var(--danger), 0 0 28px rgba(255, 107, 88, 0.42);
  transform: translate(-50%, -50%);
  animation: targetFlicker 2.2s ease-in-out infinite;
}

.hour-blip {
  width: 12px;
  height: 12px;
  animation-duration: 2.7s;
}

.minute-blip {
  animation-duration: 2.1s;
  animation-delay: -0.4s;
}

.second-blip {
  width: 8px;
  height: 8px;
  animation-duration: 1.2s;
  animation-delay: -0.8s;
}

.radar-hover-signal {
  position: absolute;
  left: var(--hover-x, 50%);
  top: var(--hover-y, 50%);
  z-index: 3;
  width: 12px;
  height: 12px;
  border: 1px solid rgba(255, 199, 106, 0.9);
  border-radius: 50%;
  background: var(--accent2);
  box-shadow: 0 0 20px var(--accent2);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0.8);
}

.radar.is-tracking .radar-hover-signal {
  animation: hoverSignal 1.1s ease-out infinite;
}

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

@keyframes targetFlicker {
  0%,
  100% {
    opacity: 0.42;
    filter: brightness(0.8);
  }

  45% {
    opacity: 1;
    filter: brightness(1.45);
  }

  68% {
    opacity: 0.64;
    filter: brightness(0.95);
  }
}

@keyframes hoverSignal {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.7);
  }

  18% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(3.2);
  }
}

@keyframes signalFade {
  0%,
  100% {
    opacity: 0.18;
    filter: drop-shadow(0 0 10px rgba(157, 255, 159, 0.1));
  }

  45% {
    opacity: 0.34;
    filter: drop-shadow(0 0 22px rgba(157, 255, 159, 0.18));
  }

  62% {
    opacity: 0.24;
  }
}

.status-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.status-grid div {
  min-height: 74px;
  padding: 12px;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(157, 255, 159, 0.08), transparent 42%),
    rgba(0, 0, 0, 0.22);
  box-shadow: inset 0 0 18px rgba(157, 255, 159, 0.04);
}

small {
  color: var(--muted);
  font-size: 12px;
}

.status-grid b {
  display: block;
  color: var(--accent);
  font-size: clamp(18px, 2.4vw, 24px);
  line-height: 1.1;
}

.section-title {
  max-width: 820px;
  margin-bottom: 34px;
}

.cards {
  display: grid;
  gap: 18px;
}

.three {
  grid-template-columns: repeat(3, 1fr);
}

.four {
  grid-template-columns: repeat(4, 1fr);
}

.card {
  position: relative;
  min-height: 230px;
  overflow: hidden;
  padding: 26px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(23, 37, 30, 0.86), rgba(10, 14, 12, 0.9));
}

.card::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 130px;
  height: 130px;
  border: 1px solid rgba(157, 255, 159, 0.18);
  border-radius: 50%;
}

.card p,
.split p,
.join p,
.campaign-list p {
  color: var(--muted);
}

.compact {
  min-height: 190px;
}

.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  align-items: start;
  gap: 46px;
}

.timeline {
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 18px;
  padding: 22px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.025);
}

.timeline li:last-child {
  border-bottom: 0;
}

.timeline b {
  color: var(--accent);
  font-size: 22px;
}

.campaign {
  background: linear-gradient(180deg, rgba(157, 255, 159, 0.04), transparent);
}

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

.campaign-list div {
  min-height: 180px;
  padding: 22px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.2);
}

.campaign-list b {
  display: block;
  margin: 10px 0;
  font-size: 22px;
}

.join {
  display: grid;
  grid-template-columns: 1fr 420px;
  align-items: center;
  gap: 36px;
}

.link-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 26px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.25);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(20px, 6vw, 96px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 900px) {
  .site-header {
    align-items: center;
    padding: 14px 20px;
  }

  nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 8px 22px 18px;
    border-bottom: 1px solid var(--line);
    background: rgba(8, 12, 10, 0.96);
  }

  nav.is-open {
    display: flex;
  }

  nav a {
    padding: 12px 0;
  }

  .nav-toggle {
    display: block;
  }

  .hero,
  .split,
  .join {
    grid-template-columns: 1fr;
  }

  .command-card {
    min-height: 420px;
  }

  .three,
  .four,
  .campaign-list {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 64px 22px;
  }

  footer {
    flex-direction: column;
  }

  h1 {
    font-size: clamp(40px, 13vw, 58px);
  }

  h2 {
    font-size: clamp(30px, 8vw, 42px);
  }

  .link-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .brand {
    gap: 10px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .hero-tagline {
    font-size: clamp(24px, 8vw, 30px);
  }

  .button {
    width: 100%;
    min-height: 48px;
    padding-inline: 16px;
  }

  .status-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .command-card {
    min-height: 360px;
    padding: 22px;
  }

  .command-card::before {
    inset: 14px;
  }

  .radar {
    margin: 22px auto;
    width: min(92%, 280px);
  }

  .timeline li {
    grid-template-columns: 52px 1fr;
    gap: 12px;
    padding: 18px;
  }
}