/* ============================================================
   公积金贷款计算器 · 主样式
   设计规范：纯色无渐变 / 1px 边框卡片 / 中性配色 / 8px 圆角
   ============================================================ */

:root {
  --c-brand:   #2e6152;   /* 深墨绿（品牌主色） */
  --c-brand-2: #234b40;   /* 深一档（header） */
  --c-ochre:   #9a622f;
  --c-green:   #2e7d57;
  --c-red:     #c14a3d;
  --c-purple:  #5c6672;
  --t-1: #1d2529;
  --t-2: #4a555c;
  --t-3: #8a949b;
  --border: #e3e6e8;
  --bg:     #f6f7f8;
  --bg-white: #ffffff;
  --radius: 8px;
  --radius-sm: 5px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--t-1);
  background: var(--bg);
  line-height: 1.65;
  font-size: 15px;
}
a { color: var(--c-brand); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.35; margin: 0 0 .5em; font-weight: 600; }
h1 { font-size: 26px; }
h2 { font-size: 20px; }
h3 { font-size: 17px; }
p { margin: 0 0 .8em; }
img, svg { max-width: 100%; }

/* ========== header ========== */
.site-header { background: var(--c-brand-2); color: #fff; }
.site-header .inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.site-logo { font-size: 19px; font-weight: 700; color: #fff; letter-spacing: .5px; }
.site-logo .sub { font-size: 12px; font-weight: 400; color: rgba(255,255,255,.72); margin-left: 10px; letter-spacing: 0; }
.site-nav { display: flex; gap: 4px; flex-wrap: wrap; }
.site-nav a { color: rgba(255,255,255,.85); padding: 6px 12px; border-radius: var(--radius-sm); font-size: 14px; }
.site-nav a:hover { color: #fff; background: rgba(255,255,255,.1); text-decoration: none; }
.site-nav a.active { color: #fff; background: rgba(255,255,255,.16); }

/* ========== 布局 ========== */
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
main.container { padding: 24px 20px 48px; }
.page-head { margin-bottom: 20px; }
.page-head .crumb { font-size: 13px; color: var(--t-3); margin-bottom: 6px; }
.page-head h1 { margin-bottom: 6px; }
.page-head .desc { color: var(--t-2); font-size: 14px; max-width: 760px; }

/* ========== 卡片 ========== */
.card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; margin-bottom: 18px; }
.card-title { font-size: 16px; font-weight: 600; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--border); }
.card-title .tag { font-size: 12px; font-weight: 400; color: var(--t-3); margin-left: 8px; }

/* ========== Tabs ========== */
.tabs { display: flex; gap: 2px; border-bottom: 2px solid var(--border); margin-bottom: 20px; overflow-x: auto; }
.tabs button {
  appearance: none; border: none; background: none; padding: 10px 16px;
  font-size: 14.5px; color: var(--t-2); cursor: pointer;
  border-bottom: 2px solid transparent; margin-bottom: -2px; white-space: nowrap; font-family: inherit;
}
.tabs button:hover { color: var(--t-1); }
.tabs button.active { color: var(--c-brand); border-bottom-color: var(--c-brand); font-weight: 600; }
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* ========== 表单 ========== */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; }
.field label { display: block; font-size: 13px; color: var(--t-2); margin-bottom: 5px; }
.field .unit-wrap { position: relative; }
.field .unit { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); font-size: 13px; color: var(--t-3); pointer-events: none; }
input[type=number], input[type=text], select {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 15px; font-family: inherit; color: var(--t-1); background: #fff;
}
input[type=number]:focus, select:focus { outline: none; border-color: var(--c-brand); }
input[type=range] { width: 100%; accent-color: var(--c-brand); }

.radio-row { display: flex; gap: 8px; flex-wrap: wrap; }
.radio-pill {
  display: inline-block; padding: 7px 14px; border: 1px solid var(--border); border-radius: 20px;
  font-size: 13.5px; cursor: pointer; color: var(--t-2); background: #fff; user-select: none;
}
.radio-pill.active { border-color: var(--c-brand); color: var(--c-brand); font-weight: 600; background: rgba(46,97,82,.07); }

.btn {
  display: inline-block; border: 1px solid var(--c-brand); background: var(--c-brand); color: #fff;
  padding: 11px 26px; border-radius: var(--radius-sm); font-size: 15px; font-weight: 600; cursor: pointer; font-family: inherit;
}
.btn:hover { background: var(--c-brand-2); text-decoration: none; }
.btn.secondary { background: #fff; color: var(--c-brand); }
.btn.secondary:hover { background: rgba(46,97,82,.05); }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.hint { font-size: 12.5px; color: var(--t-3); margin-top: 5px; }
.hint.warn { color: var(--c-ochre); }

/* ========== 结果 ========== */
.result-area { margin-top: 18px; }
.result-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; background: #fff; }
.stat .k { font-size: 12.5px; color: var(--t-3); margin-bottom: 4px; }
.stat .v { font-size: 21px; font-weight: 700; color: var(--t-1); }
.stat .v small { font-size: 12px; font-weight: 400; color: var(--t-3); margin-left: 2px; }
.stat.primary { border-color: var(--c-brand); }
.stat.primary .v { color: var(--c-brand); }
.stat.interest .v { color: var(--c-red); }
.stat.good .v { color: var(--c-green); }
.stat.limit { border-color: var(--c-ochre); }
.stat.limit .v { color: var(--c-ochre); }

table.plain { width: 100%; border-collapse: collapse; font-size: 13.5px; }
table.plain th, table.plain td { border-bottom: 1px solid var(--border); padding: 8px 10px; text-align: right; }
table.plain th { color: var(--t-2); font-weight: 500; background: #fafbfb; }
table.plain th:first-child, table.plain td:first-child { text-align: left; }
table.plain .num { font-variant-numeric: tabular-nums; }
.table-scroll { overflow-x: auto; }
tr.limiting { background: #fbf7f1; }
tr.limiting td { color: var(--c-ochre); font-weight: 600; }
.compare-table td.best { color: var(--c-green); font-weight: 600; }

/* ========== 场景快选 ========== */
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { border: 1px solid var(--border); border-radius: 20px; padding: 6px 14px; font-size: 13px; color: var(--t-2); cursor: pointer; background: #fff; }
.chip:hover { border-color: var(--c-brand); color: var(--c-brand); }

/* ========== 内容 ========== */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.city-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.city-list a { display: block; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 12px; font-size: 14px; color: var(--t-1); background: #fff; }
.city-list a:hover { border-color: var(--c-brand); color: var(--c-brand); text-decoration: none; }
.city-list a .sub { display: block; font-size: 12px; color: var(--t-3); }
ul.plain-list, ol.plain-list { padding-left: 22px; margin: 0 0 1em; }
ul.plain-list li, ol.plain-list li { margin-bottom: 6px; color: var(--t-2); }

/* ========== FAQ ========== */
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:last-child { border-bottom: none; }
.faq-q { display: block; padding: 13px 28px 13px 0; cursor: pointer; font-weight: 600; font-size: 15px; position: relative; }
.faq-q::after { content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 18px; color: var(--t-3); }
.faq-item.open .faq-q::after { content: "–"; }
.faq-a { display: none; padding: 0 0 14px; color: var(--t-2); font-size: 14px; }
.faq-item.open .faq-a { display: block; }

/* ========== 提示条 ========== */
.notice { border: 1px solid var(--border); border-left: 3px solid var(--c-brand); background: #fff; border-radius: var(--radius-sm); padding: 12px 16px; font-size: 13.5px; color: var(--t-2); margin-bottom: 16px; }
.notice.ochre { border-left-color: var(--c-ochre); }
.notice.green { border-left-color: var(--c-green); }

/* ========== footer ========== */
.site-footer { border-top: 1px solid var(--border); background: #fff; padding: 28px 0 40px; color: var(--t-3); font-size: 13px; }
.site-footer .inner { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; margin-bottom: 12px; }
.footer-links a { color: var(--t-2); }
.footer-copy { color: var(--t-3); line-height: 1.8; }

/* ========== 打印 ========== */
@media print {
  .site-header, .site-footer, .tabs, .btn-row, .chip-row, .no-print { display: none !important; }
  body { background: #fff; font-size: 12px; }
  .card { border: none; padding: 0; page-break-inside: avoid; }
  .tab-pane { display: block !important; }
}

/* ========== 响应式 ========== */
@media (max-width: 760px) {
  h1 { font-size: 21px; }
  h2 { font-size: 17.5px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .site-header .inner { padding: 12px 16px; }
  main.container { padding: 16px 16px 40px; }
  .card { padding: 16px; }
  .stat .v { font-size: 18px; }
  .site-logo .sub { display: none; }
}