:root {
  color-scheme: dark;
  font-family: "Microsoft YaHei UI", "Segoe UI", Arial, sans-serif;
  color: #e5eefb;
  background: #0b1220;
  --panel: rgba(15, 23, 42, 0.9);
  --panel-soft: rgba(30, 41, 59, 0.72);
  --line: rgba(148, 163, 184, 0.28);
  --muted: #94a3b8;
  --ink: #f8fafc;
  --primary: #22c55e;
  --blue: #38bdf8;
  --warn: #fbbf24;
  --bad: #fb7185;
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: #0b1220; }
button, input, select { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: 0.55; }

.setup-shell {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at 10% 10%, rgba(56, 189, 248, 0.15), transparent 32%),
    radial-gradient(circle at 82% 18%, rgba(34, 197, 94, 0.16), transparent 34%),
    linear-gradient(145deg, #0b1220, #111827 52%, #0f172a);
}

.setup-card {
  width: min(1120px, 100%);
  min-height: 680px;
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(2, 6, 23, 0.74);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.36);
  overflow: hidden;
}

.setup-aside {
  padding: 28px;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.68));
  border-right: 1px solid var(--line);
}

.setup-aside h1 { margin: 0 0 16px; font-size: 38px; line-height: 1.08; letter-spacing: 0; }
.setup-aside p { color: var(--muted); line-height: 1.75; }
.eyebrow { margin: 0 0 8px; color: var(--primary); font-size: 12px; font-weight: 900; letter-spacing: 0.08em; text-transform: uppercase; }
.step-list { list-style: none; margin: 28px 0 0; padding: 0; display: grid; gap: 12px; }
.step-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.54);
}
.step-list li > span {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: #1e293b;
  color: var(--muted);
}
.step-list li.active { border-color: rgba(34, 197, 94, 0.75); background: rgba(34, 197, 94, 0.08); }
.step-list li.done > span, .step-list li.active > span { color: #052e16; background: var(--primary); }
.step-list strong { display: block; }
.step-list small { color: var(--muted); }

.setup-main { padding: 28px; display: flex; flex-direction: column; gap: 18px; }
.section-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.section-head h2 { margin: 0; font-size: 26px; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 9px;
  color: var(--muted);
  font-weight: 800;
}
.spin { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.wide { grid-column: 1 / -1; }
label { display: grid; gap: 7px; color: #cbd5e1; font-weight: 800; font-size: 13px; }
input, select {
  width: 100%;
  min-height: 42px;
  border-radius: 6px;
  border: 1px solid #334155;
  background: #020617;
  color: var(--ink);
  padding: 9px 11px;
  outline: none;
}
input:focus, select:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15); }
input[readonly] { color: var(--muted); }
.hint { margin: 0; color: var(--muted); line-height: 1.65; }

.choice-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.choice-grid button {
  min-height: 190px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  padding: 18px;
  text-align: left;
  display: grid;
  align-content: start;
  gap: 10px;
}
.choice-grid button.selected { border-color: var(--primary); background: rgba(34, 197, 94, 0.09); }
.choice-grid span { color: var(--muted); line-height: 1.6; }

.summary-box {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
  padding: 16px;
}
.summary-box span { color: var(--muted); }
.summary-box strong { overflow-wrap: anywhere; }
.test-panel, .confirm-panel, .complete-panel { display: grid; gap: 16px; }
.complete-panel {
  min-height: 420px;
  place-items: center;
  align-content: center;
  text-align: center;
}
.complete-panel svg { color: var(--primary); }
.complete-panel p { max-width: 620px; color: var(--muted); line-height: 1.8; }
code { color: #bfdbfe; }

.btn {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 900;
  background: transparent;
  color: var(--ink);
}
.btn.primary { background: var(--primary); color: #052e16; border-color: var(--primary); }
.btn.ghost { color: #cbd5e1; background: #1e293b; }
.setup-actions { margin-top: auto; display: flex; justify-content: space-between; gap: 10px; }
.alert, .result {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  border-radius: 8px;
  padding: 12px;
  line-height: 1.6;
}
.alert.bad { color: #fecdd3; background: rgba(244, 63, 94, 0.12); border: 1px solid rgba(244, 63, 94, 0.36); }
.alert.warn { color: #fde68a; background: rgba(245, 158, 11, 0.12); border: 1px solid rgba(245, 158, 11, 0.36); }
.result.good { color: #bbf7d0; background: rgba(34, 197, 94, 0.12); border: 1px solid rgba(34, 197, 94, 0.36); }
.result p { margin: 4px 0; color: var(--muted); }

@media (max-width: 900px) {
  .setup-card { grid-template-columns: 1fr; }
  .setup-aside { border-right: 0; border-bottom: 1px solid var(--line); }
  .form-grid, .choice-grid { grid-template-columns: 1fr; }
  .summary-box { grid-template-columns: 1fr; }
}