:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --border: #e5e7eb;
  --text: #111827;
  --muted: #6b7280;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --ok: #059669;
  --err: #dc2626;
  --warn: #d97706;
  --radius: 12px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }

/* ---------- 顶栏 ---------- */
.topbar {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.brand { font-weight: 700; font-size: 16px; letter-spacing: -0.01em; }
.brand .logo { color: var(--accent); margin-right: 4px; }

.tabs { display: flex; gap: 4px; }
.tab {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  padding: 7px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
  transition: all .15s;
}
.tab:hover { background: #f3f4f6; color: var(--text); }
.tab.active { background: #eef2ff; color: var(--accent); font-weight: 600; }

/* ---------- 面板 ---------- */
.panel { display: none; padding: 32px 0 60px; }
.panel.active { display: block; }

.hero { text-align: center; margin-bottom: 28px; }
.hero h1 { font-size: 26px; margin: 0 0 6px; letter-spacing: -0.02em; }
.hero .sub { color: var(--muted); margin: 0; font-size: 14px; }

/* ---------- 步骤条 ---------- */
.steps {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  gap: 8px;
}
.steps li {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 13px;
  transition: all .2s;
}
.steps li b {
  width: 22px; height: 22px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: #f3f4f6;
  font-size: 12px;
  flex-shrink: 0;
}
.steps li.active { color: var(--text); border-color: #c7d2fe; }
.steps li.active b { background: var(--accent); color: #fff; }
.steps li.current { box-shadow: 0 0 0 3px #eef2ff; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 1px 2px rgba(16, 24, 40, .04);
}
.card h2 { font-size: 16px; margin: 0 0 6px; }
.hint { color: var(--muted); font-size: 13px; margin: 0 0 18px; }
.hint code {
  background: #f3f4f6; padding: 1px 6px;
  border-radius: 4px; font-size: 12px;
}

/* ---------- 表单 ---------- */
.field { display: block; margin-bottom: 16px; }
.field > span {
  display: block; font-size: 13px;
  font-weight: 600; margin-bottom: 6px;
}
.field input, .field textarea, select {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--border);
  border-radius: 9px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
  transition: border-color .15s, box-shadow .15s;
  resize: vertical;
}
.field input:focus, .field textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px #eef2ff;
}
.field textarea { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }

.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

.btn {
  border: 0;
  border-radius: 9px;
  padding: 11px 22px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all .15s;
}
.btn.primary { background: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-hover); }
.btn.primary:disabled { opacity: .55; cursor: not-allowed; }
.btn.ghost { background: #f3f4f6; color: var(--text); }
.btn.ghost:hover { background: #e5e7eb; }

.msg { font-size: 13px; }
.msg.ok { color: var(--ok); }
.msg.err { color: var(--err); }

.security {
  background: #fffbeb;
  border: 1px solid #fde68a;
  color: #92400e;
  font-size: 12.5px;
  padding: 10px 13px;
  border-radius: 9px;
  margin-bottom: 16px;
  line-height: 1.55;
}

/* ---------- 套餐信息 ---------- */
.planBox {
  margin-top: 18px;
  padding: 14px 16px;
  background: #f9fafb;
  border-radius: 9px;
  display: flex;
  gap: 32px;
}
.planBox .k { color: var(--muted); font-size: 12px; display: block; }
.planBox .v { font-weight: 600; font-size: 15px; }

/* ---------- 进度 ---------- */
.progressBox { padding: 6px 0 18px; }
.orderNo { font-size: 13px; color: var(--muted); margin-bottom: 16px; }
.orderNo b { color: var(--text); font-family: ui-monospace, monospace; }

.stageRow { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.stageText { font-size: 14px; font-weight: 500; }

.spinner {
  width: 18px; height: 18px;
  border: 2.5px solid #e5e7eb;
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  flex-shrink: 0;
}
.spinner.done { border-color: var(--ok); border-top-color: var(--ok); animation: none; }
.spinner.done::after { content: "✓"; display: block; color: var(--ok); font-size: 12px; text-align: center; line-height: 14px; }
.spinner.fail { border-color: var(--err); border-top-color: var(--err); animation: none; }
.spinner.fail::after { content: "✕"; display: block; color: var(--err); font-size: 11px; text-align: center; line-height: 14px; }

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

.stageBar { height: 6px; background: #f3f4f6; border-radius: 3px; overflow: hidden; }
.stageFill { height: 100%; width: 0; background: var(--accent); border-radius: 3px; transition: width .5s ease; }

.errBox {
  margin-top: 16px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
  padding: 11px 14px;
  border-radius: 9px;
  font-size: 13px;
}

/* ---------- 查询结果 ---------- */
.resultBox { margin-top: 20px; border-top: 1px solid var(--border); padding-top: 16px; }
.kv { display: flex; justify-content: space-between; padding: 7px 0; font-size: 13.5px; }
.kv span { color: var(--muted); }
.kv b.err { color: var(--err); }
.st-success { color: var(--ok); }
.st-failed { color: var(--err); }
.st-processing, .st-pending { color: var(--warn); }

/* ---------- FAQ ---------- */
.faq details { border-bottom: 1px solid var(--border); padding: 12px 0; }
.faq details:last-child { border-bottom: 0; }
.faq summary { cursor: pointer; font-weight: 600; font-size: 14px; }
.faq summary::marker { color: var(--accent); }
.faq p { color: var(--muted); font-size: 13.5px; margin: 8px 0 0; }

/* ---------- 页脚 ---------- */
.foot {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  color: var(--muted);
  font-size: 12.5px;
  text-align: center;
}
.foot .dot { margin: 0 6px; }

/* ---------- 管理后台 ---------- */
.adminGrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px;
}
.stat .n { font-size: 24px; font-weight: 700; letter-spacing: -0.02em; }
.stat .l { font-size: 12px; color: var(--muted); margin-top: 2px; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; }
tbody tr:hover { background: #f9fafb; }
code { font-family: ui-monospace, monospace; font-size: 12px; }

.pill { padding: 2px 8px; border-radius: 999px; font-size: 11.5px; font-weight: 600; }
.pill.available { background: #ecfdf5; color: #047857; }
.pill.used { background: #f3f4f6; color: #4b5563; }
.pill.in_use { background: #fffbeb; color: #b45309; }
.pill.dead { background: #fef2f2; color: #b91c1c; }
.pill.unused { background: #eef2ff; color: #4338ca; }
.pill.locked { background: #fffbeb; color: #b45309; }
.pill.void { background: #f3f4f6; color: #9ca3af; }
.pill.success { background: #ecfdf5; color: #047857; }
.pill.failed { background: #fef2f2; color: #b91c1c; }
.pill.processing, .pill.pending { background: #fffbeb; color: #b45309; }

.tableWrap { overflow-x: auto; }
.mt { margin-top: 20px; }
.small { font-size: 12px; color: var(--muted); }

@media (max-width: 640px) {
  .steps li span { display: none; }
  .steps li { justify-content: center; }
  .planBox { gap: 20px; }
  .topbar .wrap { height: auto; padding: 10px 16px; flex-direction: column; gap: 8px; }
  .hero h1 { font-size: 21px; }
}