.activation-site {
  --activation-bg: #070b12;
  --activation-panel: #101824;
  --activation-line: #2a3647;
  --activation-text: #edf7f4;
  --activation-muted: #a9b7c4;
  --activation-accent: #5bf2cf;
  --activation-danger: #ff9db0;
  min-height: 100vh;
  color-scheme: dark;
  color: var(--activation-text);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background:
    radial-gradient(ellipse at 85% 0%, #0c292a 0%, transparent 42%),
    radial-gradient(ellipse at 0% 100%, #1c1734 0%, transparent 44%),
    var(--activation-bg);
}

.activation-header,
.activation-layout {
  width: min(1200px, calc(100% - 64px));
  margin-inline: auto;
}

.activation-header {
  display: flex;
  align-items: center;
  min-height: 78px;
  border-bottom: 1px solid var(--activation-line);
}

.activation-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--activation-text);
  font-size: 19px;
  font-weight: 700;
}

.activation-brand span {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid #306258;
  border-radius: 10px;
  color: var(--activation-accent);
  background: #102a2a;
}

.activation-layout {
  display: grid;
  grid-template-columns: minmax(230px, 0.8fr) minmax(0, 1.6fr);
  gap: clamp(28px, 6vw, 88px);
  align-items: start;
  padding-block: clamp(44px, 9vw, 112px) 64px;
}

.activation-guide h1 {
  margin: 0 0 34px;
  font-size: clamp(38px, 6vw, 72px);
  letter-spacing: -0.05em;
  line-height: 1.12;
}

.activation-guide h1 span { color: var(--activation-accent); }

.activation-steps {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.activation-steps li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 15px;
  border: 1px solid var(--activation-line);
  border-radius: 12px;
  color: var(--activation-muted);
  background: #101722;
}

.activation-steps li[aria-current="step"] {
  border-color: #346e63;
  color: var(--activation-text);
  background: #122824;
}

.activation-steps li > span {
  display: grid;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  place-items: center;
  border-radius: 9px;
  color: inherit;
  background: #202c3b;
  font: 600 13px "IBM Plex Mono", ui-monospace, monospace;
}

.activation-steps li[aria-current="step"] > span {
  color: #071c17;
  background: var(--activation-accent);
}

.activation-panel {
  overflow: hidden;
  border: 1px solid var(--activation-line);
  border-radius: 20px;
  background: var(--activation-panel);
  box-shadow: 0 28px 80px #0005;
}

.activation-panel-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px clamp(20px, 4vw, 40px);
  border-bottom: 1px solid var(--activation-line);
  color: var(--activation-muted);
  font-size: 13px;
}

.activation-panel-bar span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--activation-accent);
}

.activation-panel-content { padding: clamp(24px, 4vw, 40px); }

.activation-panel h2 {
  margin: 0 0 8px;
  color: var(--activation-text);
  font-size: clamp(25px, 3.5vw, 38px);
  line-height: 1.2;
}

.activation-muted {
  margin: 0 0 24px;
  color: var(--activation-muted);
}

.activation-panel form label {
  display: block;
  margin: 0 0 8px;
  color: var(--activation-text);
  font-weight: 600;
}

.activation-panel input[type="text"] {
  width: 100%;
  min-height: 56px;
  padding: 12px 15px;
  border: 1px solid var(--activation-line);
  border-radius: 10px;
  color: var(--activation-text);
  background: #0a111b;
  font: 15px "IBM Plex Mono", ui-monospace, monospace;
}

.activation-panel input::placeholder { color: #8899ac; }

.activation-site :is(button, a, input):focus-visible {
  outline: 2px solid var(--activation-accent);
  outline-offset: 3px;
}

.activation-button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 46px;
  margin-top: 20px;
  padding: 10px 20px;
  border: 1px solid transparent;
  border-radius: 10px;
  color: #071c17;
  background: var(--activation-accent);
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.activation-button:hover { color: #071c17; background: #90f7df; }
.activation-button:disabled { opacity: 0.68; cursor: wait; }
.activation-panel form .activation-button { width: 100%; }

.activation-error {
  margin: 10px 0 0;
  color: var(--activation-danger);
}

.activation-panel [data-activation-progress] { margin: 12px 0 0; }
.activation-panel [hidden] { display: none; }

.activation-result {
  display: grid;
  gap: 12px;
  margin: 0 0 20px;
}

.activation-result dt { color: var(--activation-muted); }
.activation-result dd { margin: 6px 0 0; }

.activation-result button {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--activation-line);
  border-radius: 8px;
  color: var(--activation-text);
  background: #0a111b;
  text-align: left;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  cursor: pointer;
}

.activation-link {
  display: inline-block;
  margin-top: 16px;
  color: var(--activation-accent);
}

.activation-button + .activation-link { margin-inline-start: 12px; }

@media (max-width: 700px) {
  .activation-header,
  .activation-layout { width: calc(100% - 32px); }

  .activation-header { min-height: 64px; }
  .activation-layout { grid-template-columns: 1fr; gap: 24px; padding-block: 30px 48px; }
  .activation-guide h1 { margin-bottom: 20px; }
  .activation-steps { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; }
  .activation-steps li { flex-direction: column; gap: 6px; padding: 8px 2px; font-size: 12px; text-align: center; }
  .activation-steps li > span { width: 25px; height: 25px; }
  .activation-panel input[type="text"] { font-size: 16px; }
}