:root {
  --pri: #185fa5;
  --pri-dark: #0c447c;
  --pri-soft: #e6f1fb;
  --ink: #1f2328;
  --mut: #5c6672;
  --bd: #e3e7ec;
  --bg: #f6f8fa;
  --surf: #eef4fb;
  --ok: #0f6e56;
  --warn: #854f0b;
  --radius: 14px;
}
* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
html, body { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 560px; margin: 0 auto; padding: 18px 16px 96px; }
.hide { display: none !important; }

/* 顶栏 */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(246, 248, 250, .94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--bd);
  padding: 12px 16px;
  display: flex; align-items: center; gap: 10px;
  max-width: 560px; margin: 0 auto;
}
.brand { font-size: 13px; font-weight: 600; color: var(--pri); letter-spacing: .02em; }
.topbar .spacer { flex: 1; }
.bar { height: 4px; background: var(--bd); border-radius: 99px; flex: 1; overflow: hidden; }
.bar > i { display: block; height: 100%; width: 0; background: var(--pri); border-radius: 99px; transition: width .28s ease; }
.counter { font-size: 12px; color: var(--mut); font-variant-numeric: tabular-nums; }

/* 卡片 */
.card { background: #fff; border: 1px solid var(--bd); border-radius: var(--radius); padding: 20px; margin-bottom: 14px; }
.card.tight { padding: 16px; }
h1 { font-size: 22px; line-height: 1.4; font-weight: 600; margin-bottom: 10px; }
h2 { font-size: 17px; font-weight: 600; margin-bottom: 12px; color: var(--pri); }
h3 { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
p { margin-bottom: 10px; }
.muted { color: var(--mut); font-size: 13.5px; }
.center { text-align: center; }

.kicker { font-size: 12px; letter-spacing: .1em; color: var(--pri); font-weight: 600; margin-bottom: 10px; }

/* 按钮 */
.btn {
  display: block; width: 100%; border: 0; border-radius: 12px;
  background: var(--pri); color: #fff; font-size: 16px; font-weight: 600;
  padding: 14px 18px; cursor: pointer; font-family: inherit;
  transition: background .16s ease, opacity .16s ease;
}
.btn:active { background: var(--pri-dark); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.ghost { background: #fff; color: var(--pri); border: 1px solid var(--bd); font-weight: 500; }
.btn.ghost:active { background: var(--surf); }
.btn.sm { font-size: 14px; padding: 10px 14px; }
.btn-row { display: flex; gap: 10px; }

/* 选项 */
.opts { display: grid; gap: 10px; margin-top: 4px; }
.opt {
  display: flex; align-items: center; gap: 12px; width: 100%; text-align: left;
  background: #fff; border: 1px solid var(--bd); border-radius: 12px;
  padding: 14px 16px; font-size: 15px; font-family: inherit; color: var(--ink);
  cursor: pointer; transition: all .14s ease;
}
.opt:active { border-color: var(--pri); background: var(--pri-soft); }
.opt.on { border-color: var(--pri); background: var(--pri-soft); color: var(--pri-dark); font-weight: 500; }
.opt .tick {
  width: 22px; height: 22px; flex: 0 0 22px; border-radius: 50%;
  border: 1.5px solid var(--bd); display: grid; place-items: center;
  font-size: 12px; color: #fff; background: #fff;
}
.opt.on .tick { background: var(--pri); border-color: var(--pri); }

/* 量表 */
.scale { display: flex; gap: 8px; margin: 6px 0 2px; }
.scale button {
  flex: 1; aspect-ratio: 1 / .82; border-radius: 12px; border: 1px solid var(--bd);
  background: #fff; font-size: 17px; font-weight: 600; font-family: inherit;
  color: var(--ink); cursor: pointer; transition: all .14s ease;
}
.scale button:active, .scale button.on { background: var(--pri); border-color: var(--pri); color: #fff; }
.scale-labels { display: flex; justify-content: space-between; font-size: 12px; color: var(--mut); }
.hint {
  background: var(--surf); border-radius: 10px; padding: 10px 12px;
  font-size: 13px; color: var(--mut); margin-top: 12px;
}

/* 指标 */
.metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 4px; }
.metric { background: var(--surf); border-radius: 12px; padding: 12px 14px; }
.metric .k { font-size: 12px; color: var(--mut); }
.metric .v { font-size: 17px; font-weight: 600; color: var(--pri); margin-top: 2px; line-height: 1.35; }
.metric .v.sm { font-size: 14px; }

.kv { width: 100%; border-collapse: collapse; }
.kv th { text-align: left; font-weight: 500; color: var(--mut); font-size: 13.5px; padding: 9px 10px; border-bottom: 1px solid var(--bd); width: 34%; vertical-align: top; }
.kv td { padding: 9px 10px; border-bottom: 1px solid var(--bd); font-size: 13.5px; vertical-align: top; }
.kv tr:last-child th, .kv tr:last-child td { border-bottom: 0; }

ul.plain { list-style: none; }
ul.plain li { position: relative; padding-left: 18px; font-size: 14px; margin-bottom: 7px; }
ul.plain li::before {
  content: ""; position: absolute; left: 4px; top: .62em;
  width: 5px; height: 5px; border-radius: 50%; background: var(--pri); opacity: .6;
}

/* 表单 */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13.5px; color: var(--mut); margin-bottom: 6px; }
.field input {
  width: 100%; border: 1px solid var(--bd); border-radius: 12px;
  padding: 13px 14px; font-size: 16px; font-family: inherit; color: var(--ink);
  background: #fff; outline: none;
}
.field input:focus { border-color: var(--pri); }

/* 加载 */
.loading { text-align: center; padding: 46px 0; }
.spinner {
  width: 34px; height: 34px; margin: 0 auto 16px;
  border: 3px solid var(--bd); border-top-color: var(--pri);
  border-radius: 50%; animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* 底部操作条 */
.actionbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
  background: rgba(255, 255, 255, .96); backdrop-filter: blur(8px);
  border-top: 1px solid var(--bd); padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
}
.actionbar-inner { max-width: 560px; margin: 0 auto; display: flex; gap: 10px; }
.actionbar .btn { flex: 1; }

.disc { background: var(--surf); border-radius: 12px; padding: 12px 14px; font-size: 12.5px; color: var(--mut); }

.tag { display: inline-block; font-size: 11px; padding: 2px 8px; border-radius: 99px; background: var(--pri-soft); color: var(--pri-dark); margin-left: 6px; vertical-align: middle; }
.tag.warn { background: #faeeda; color: var(--warn); }

.err { background: #fcebeb; color: #a32d2d; border-radius: 10px; padding: 10px 12px; font-size: 13.5px; margin-bottom: 12px; }

.steps { display: flex; align-items: center; gap: 6px; margin-bottom: 16px; }
.steps i { flex: 1; height: 3px; border-radius: 99px; background: var(--bd); }
.steps i.on { background: var(--pri); }