:root {
  --bg0: #0b1220;
  --bg1: #132033;
  --ink: #e8eef8;
  --muted: #9aabbf;
  --accent: #3dd6c6;
  --accent-2: #2a9d8f;
  --line: rgba(232, 238, 248, 0.12);
  --panel: rgba(19, 32, 51, 0.82);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  --font-display: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(61, 214, 198, 0.18), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(84, 130, 255, 0.16), transparent 50%),
    linear-gradient(160deg, var(--bg0), var(--bg1));
}

body {
  min-height: 100vh;
}

.page {
  width: min(720px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 3.5rem 0 2.5rem;
}

.hero h1 {
  margin: 0.4rem 0 0.8rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero.compact { padding-bottom: 0.5rem; }

.brand {
  margin: 0;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.lead {
  margin: 0;
  max-width: 34rem;
  color: var(--muted);
  line-height: 1.6;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.actions.center {
  justify-content: center;
  margin-top: 1.5rem;
}

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.85rem 1.35rem;
  font: inherit;
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--ink);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04201c;
  font-weight: 650;
}

.btn.ghost {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.btn.small {
  padding: 0.45rem 0.9rem;
  font-size: 0.82rem;
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.04);
  white-space: nowrap;
}

.steps {
  margin-top: 2.75rem;
  padding: 1.4rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.steps h2 {
  margin: 0 0 0.9rem;
  font-size: 1.1rem;
}

.steps ol {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
  line-height: 1.75;
}

.note {
  margin: 1rem 0 0;
  color: #b7c5d6;
  font-size: 0.88rem;
  line-height: 1.55;
}

.card-panel {
  margin-top: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  border-bottom: 1px solid var(--line);
}

.row:last-child { border-bottom: 0; }

.meta { min-width: 0; flex: 1; }

.label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.8rem;
}

code {
  display: block;
  overflow-wrap: anywhere;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92rem;
}

.foot {
  margin-top: 2rem;
  color: #7f90a5;
  font-size: 0.78rem;
  word-break: break-all;
}

@media (max-width: 520px) {
  .page { padding-top: 2.2rem; }
  .row { align-items: flex-start; flex-direction: column; }
}