:root {
  --bg: #0b1020;
  --card: rgba(18, 24, 48, 0.82);
  --border: rgba(120, 140, 255, 0.18);
  --text: #e8ecff;
  --muted: #9aa6d4;
  --primary: #6c7cff;
  --primary-2: #9b6dff;
  --ok: #3dd68c;
  --warn: #ffcc66;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --radius: 18px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
}

.bg {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(108, 124, 255, 0.25), transparent 40%),
    radial-gradient(circle at 80% 10%, rgba(155, 109, 255, 0.2), transparent 35%),
    radial-gradient(circle at 50% 100%, rgba(61, 214, 140, 0.08), transparent 40%),
    var(--bg);
  z-index: -1;
}

.header, .container, .footer {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
}

.header { padding: 36px 0 12px; }

.brand {
  display: flex;
  gap: 16px;
  align-items: center;
}

.logo {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: var(--shadow);
}

.brand h1 {
  margin: 0;
  font-size: 1.6rem;
}

.brand p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.container {
  display: grid;
  gap: 18px;
  padding-bottom: 48px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.card h2 {
  margin: 0 0 16px;
  font-size: 1.1rem;
}

.field { margin-bottom: 14px; }

label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

input[type="text"], textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 0.95rem;
  outline: none;
}

input:focus, textarea:focus {
  border-color: rgba(108, 124, 255, 0.65);
  box-shadow: 0 0 0 3px rgba(108, 124, 255, 0.15);
}

.platform-group { display: flex; gap: 10px; flex-wrap: wrap; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
}

.chip:has(input:checked) {
  border-color: rgba(108, 124, 255, 0.8);
  background: rgba(108, 124, 255, 0.12);
}

.hint, .status {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.5;
}

.status.ok { color: var(--ok); }
.status.warn { color: var(--warn); }

.path-help {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.88rem;
}

.path-help summary { cursor: pointer; }

.help-body {
  margin-top: 10px;
  padding: 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  line-height: 1.6;
}

.help-body code {
  color: #d6dcff;
  word-break: break-all;
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.btn {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border-radius: 12px;
  padding: 12px 16px;
  cursor: pointer;
  font-size: 0.92rem;
}

.btn:hover { border-color: rgba(108, 124, 255, 0.55); }

.btn.primary {
  border: none;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  font-weight: 600;
}

.btn.secondary {
  background: rgba(61, 214, 140, 0.12);
  border-color: rgba(61, 214, 140, 0.35);
}

.btn.small {
  padding: 8px 12px;
  font-size: 0.85rem;
}

.result {
  margin-top: 16px;
  padding: 14px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
}

.result h3 {
  margin: 0 0 10px;
  font-size: 0.95rem;
}

.result pre {
  margin: 0 0 10px;
  white-space: pre-wrap;
  word-break: break-all;
  font-size: 0.84rem;
  line-height: 1.55;
  color: #d9e0ff;
}

.steps-card ol {
  margin: 0;
  padding-left: 20px;
  line-height: 1.8;
  color: var(--muted);
}

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 10px 0 28px;
}

@media (max-width: 640px) {
  .brand { align-items: flex-start; }
  .actions { flex-direction: column; }
  .btn { width: 100%; }
}