/* balanced v6 - 适中密度 */
:root {
  --bg: #eef1f6;
  --white: #fff;
  --ink: #141824;
  --ink2: #4a5068;
  --ink3: #8890a8;
  --line: #dce2ed;
  --brand: #fe2c55;
  --green: #0a9f6e;
  --green-bg: #e8f7f0;
  --amber: #c77700;
  --amber-bg: #fef6e7;
  --indigo: #5558c9;
  --cyan: #00aeb6;
  --r: 10px;
  --font: 'DM Sans', system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body { font: 13px/1.5 var(--font); color: var(--ink); background: var(--bg); }

.page { max-width: 1280px; margin: 0 auto; padding: 14px 16px 24px; }

/* header */
.bar {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r);
  padding: 10px 16px; margin-bottom: 12px;
  box-shadow: 0 1px 4px rgba(18,20,29,.04);
}

.bar-left { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.logo {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--brand), #ff6080);
  color: #fff; font-size: 11px; font-weight: 800;
  display: grid; place-items: center;
}

.bar-title b { font-size: 15px; display: block; line-height: 1.25; }
.bar-title small { font-size: 11px; color: var(--ink3); }

.country-tabs { display: flex; gap: 6px; flex: 1; flex-wrap: wrap; min-width: 0; }

.country-tab {
  padding: 6px 14px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--white); color: var(--ink2); font-size: 12px; font-weight: 600;
  font-family: inherit; cursor: pointer; transition: all .15s;
}
.country-tab:hover { border-color: #c5cde0; color: var(--ink); }
.country-tab.active { background: var(--ink); color: #fff; border-color: var(--ink); }

.bar-right { display: flex; gap: 6px; flex-shrink: 0; }

.chip {
  font-size: 11px; padding: 5px 10px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--ink2); background: #f7f9fc;
}
.chip-ok { background: var(--green-bg); color: var(--green); border-color: #b8e8d0; }

/* layout */
.main {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 12px;
  align-items: start;
}
@media (max-width: 960px) { .main { grid-template-columns: 1fr; } }

.box {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: 0 1px 4px rgba(18,20,29,.04);
}

.form-box { padding: 16px 18px; }

.row-label {
  font-size: 11px; font-weight: 700; color: var(--ink3);
  letter-spacing: .04em;
  margin: 14px 0 10px; padding-top: 12px;
  border-top: 1px solid #eef1f6;
}
.form-box .row-label:first-child { border-top: none; padding-top: 0; margin-top: 0; }

.g { display: grid; gap: 12px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }
.g-price-row {
  grid-template-columns: minmax(68px, 0.48fr) minmax(60px, 0.42fr) minmax(220px, 1.45fr) minmax(240px, 1.65fr);
  gap: 10px;
}
.mt-sm { margin-top: 10px; }

@media (max-width: 900px) {
  .g-4, .g-price-row { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .g-2, .g-4, .g-price-row { grid-template-columns: 1fr; }
}

.f { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.f-empty { visibility: hidden; }

.f-compact { max-width: 96px; }
.f-compact label { font-size: 10px; white-space: nowrap; }
.f-compact label i { font-size: 9px; }
.f-compact input { height: 34px; padding: 0 8px; font-size: 12px; text-align: center; }

.f label {
  font-size: 11px; font-weight: 600; color: var(--ink2);
  display: flex; align-items: center; justify-content: space-between; gap: 6px;
}
.f label i { font-style: normal; color: var(--ink3); font-weight: 500; font-size: 10px; }
.f label b { color: var(--brand); font-size: 12px; font-weight: 700; }

.f-key input { border-color: rgba(254,44,85,.28); background: #fff9fa; }

.dual-row { display: flex; align-items: center; gap: 6px; }
.dual-cell { flex: 1; min-width: 0; position: relative; }
.dual-lbl {
  position: absolute; left: 9px; top: 50%; transform: translateY(-50%);
  font-size: 9px; font-weight: 700; color: var(--ink3); pointer-events: none; z-index: 1;
}
.dual-cell input { padding-left: 34px; }
.dual-arrow { font-size: 11px; color: var(--ink3); flex-shrink: 0; user-select: none; }
.f-dual .dual-cell input { border-color: rgba(254,44,85,.28); background: #fff9fa; }
.f-dual .dual-cell input:focus { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(254,44,85,.1); }

.f-dual-lg .dual-cell input { height: 38px; font-size: 14px; font-weight: 600; padding-left: 38px; }
.f-dual-lg .dual-lbl { font-size: 10px; left: 10px; }
.f-dual-lg .dual-arrow { font-size: 12px; }

.f-dual-sm .dual-row { gap: 5px; }
.f-dual-sm .dual-cell input {
  height: 34px; font-size: 12px; padding-left: 30px; padding-right: 8px;
  border-color: var(--line); background: var(--white);
}
.f-dual-sm .dual-cell input:focus { border-color: var(--indigo); box-shadow: 0 0 0 3px rgba(85,88,201,.1); }
.f-dual-sm .dual-lbl { font-size: 8px; left: 7px; }
.f-dual-sm .dual-arrow { font-size: 10px; }
.f-dual-sm .seg-btn { padding: 1px 6px; font-size: 9px; }

input, select {
  width: 100%; height: 34px; padding: 0 11px;
  border: 1px solid var(--line); border-radius: 8px;
  font: 13px var(--font); color: var(--ink); outline: none; background: var(--white);
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus { border-color: var(--indigo); box-shadow: 0 0 0 3px rgba(85,88,201,.1); }
input.ro { background: #f5f7fb; color: var(--ink2); cursor: default; }
#lastMileFee.ro { background: var(--green-bg); color: var(--green); font-weight: 600; border-color: #b8e8d0; }

.sub {
  font-size: 10px; color: var(--ink3); line-height: 1.45;
  min-height: 14px; word-break: break-all;
}
.sub a { color: var(--indigo); text-decoration: none; }
.sub strong { font-weight: 600; color: var(--ink2); }

.seg { display: inline-flex; gap: 3px; padding: 2px; background: #f0f3f9; border-radius: 6px; }
.seg-btn {
  padding: 2px 8px; border: none; border-radius: 5px;
  background: transparent; font-size: 10px; font-weight: 600; font-family: inherit;
  cursor: pointer; color: var(--ink3); transition: all .15s;
}
.seg-btn.active { background: var(--white); color: var(--ink); box-shadow: 0 1px 3px rgba(0,0,0,.08); }

.f-check {
  flex-direction: row; align-items: center; gap: 8px;
  height: 34px; margin-top: 21px; padding: 0 12px;
  border: 1px solid var(--line); border-radius: 8px; background: #f8f9fc; cursor: pointer;
}
.f-check input { width: 15px; height: 15px; accent-color: var(--brand); flex-shrink: 0; }
.f-check span { font-size: 12px; color: var(--ink2); }

/* sliders */
.sliders { gap: 10px; }

.slider-card {
  padding: 10px 12px;
  background: #f7f9fc;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.slider-card label {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 11px; font-weight: 600; color: var(--ink2); margin-bottom: 8px;
}
.slider-card label b { color: var(--brand); font-size: 13px; }
.slider-card input[type="range"] {
  width: 100%; height: 5px; padding: 0; border: none;
  accent-color: var(--brand); cursor: pointer; background: #dce2ed;
}

/* result */
.result-box { padding: 14px; position: sticky; top: 12px; }

.profit-wrap {
  text-align: center; padding: 16px 12px; border-radius: 10px;
  background: linear-gradient(145deg, #161824, #2b2f42); color: #fff; margin-bottom: 10px;
}
.profit-wrap > span { font-size: 11px; opacity: .75; }
.profit-num { font-size: 26px; font-weight: 700; margin: 4px 0; font-variant-numeric: tabular-nums; letter-spacing: -.02em; }
.profit-num.loss { color: #ff9aab; }
.profit-sub { font-size: 10px; opacity: .7; line-height: 1.45; }

.mini-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 12px;
}
.mini-stats div {
  text-align: center; padding: 8px 4px;
  background: #f7f9fc; border: 1px solid var(--line); border-radius: 8px;
}
.mini-stats em { display: block; font-size: 14px; font-weight: 700; font-style: normal; font-variant-numeric: tabular-nums; }
.mini-stats em.pos { color: var(--green); }
.mini-stats em.neg { color: var(--brand); }
.mini-stats em.warn { color: var(--amber); }
.mini-stats i { font-size: 10px; color: var(--ink3); font-style: normal; margin-top: 2px; display: block; }

.cost-head {
  font-size: 10px; font-weight: 700; color: var(--ink3);
  margin-bottom: 8px; text-transform: uppercase; letter-spacing: .04em;
}

.breakdown-item {
  display: grid; grid-template-columns: 44px 1fr 54px; gap: 8px;
  align-items: center; margin-bottom: 6px;
}
.breakdown-item .name { font-size: 11px; color: var(--ink2); font-weight: 500; }
.breakdown-item .bar-bg { height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; }
.breakdown-item .bar { height: 100%; border-radius: 3px; transition: width .35s ease; }
.bar.product { background: var(--indigo); }
.bar.platform { background: var(--brand); }
.bar.logistics { background: var(--cyan); }
.bar.marketing { background: #e8a020; }
.bar.returns { background: var(--ink3); }
.breakdown-item .amt { font-size: 10px; font-weight: 700; text-align: right; font-variant-numeric: tabular-nums; }

.price-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 10px; }
.pp { padding: 10px 8px; border-radius: 8px; text-align: center; border: 1px solid; }
.pp i { display: block; font-size: 10px; color: var(--ink3); font-style: normal; margin-bottom: 3px; }
.pp b { font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; }
.pp.warn { background: var(--amber-bg); border-color: #f5dda8; }
.pp.warn b { color: var(--amber); }
.pp.ok { background: var(--green-bg); border-color: #b8e8d0; }
.pp.ok b { color: var(--green); }

/* tables */
.tbl-box { margin-top: 10px; }
.tbl-box summary {
  padding: 10px 16px; font-size: 12px; font-weight: 700; cursor: pointer;
  list-style: none; border-bottom: 1px solid transparent;
}
.tbl-box summary::-webkit-details-marker { display: none; }
.tbl-box[open] summary { border-bottom-color: var(--line); background: #f8f9fc; }

.tbl { width: 100%; border-collapse: collapse; font-size: 12px; }
.tbl th {
  text-align: left; padding: 8px 16px; font-size: 10px; font-weight: 700;
  color: var(--ink3); background: #f8f9fc; border-bottom: 1px solid var(--line);
  text-transform: uppercase; letter-spacing: .04em;
}
.tbl td { padding: 8px 16px; border-bottom: 1px solid #eef1f6; color: var(--ink2); font-variant-numeric: tabular-nums; }
.tbl tr:last-child td { border-bottom: none; }
.tbl tbody tr:hover td { background: #fafbfd; }

.tip {
  margin: 10px 16px 14px; padding: 10px 12px; font-size: 11px; color: var(--ink2);
  background: #eef1ff; border: 1px solid #d5dcfa; border-radius: 8px; line-height: 1.6;
}
.tip strong { color: var(--indigo); }

/* float compare panel */
.float-panel {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 228px;
  z-index: 1000;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 10px 36px rgba(18, 20, 29, .16);
  user-select: none;
}
.float-panel.collapsed .float-body { display: none; }
.float-panel.collapsed .float-toggle { transform: rotate(180deg); }

.float-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  cursor: move;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #fff, #f8f9fc);
  border-radius: 12px 12px 0 0;
}
.float-panel.collapsed .float-head { border-bottom: none; border-radius: 12px; }
.float-head span { font-size: 12px; font-weight: 700; color: var(--ink); }

.float-toggle {
  width: 22px;
  height: 22px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
  color: var(--ink2);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  flex-shrink: 0;
  transition: transform .15s;
}
.float-toggle:hover { border-color: #c5cde0; color: var(--ink); }

.float-body {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.float-body .f label { font-size: 10px; }
.float-body input { height: 30px; font-size: 12px; }
.float-body .seg-sm { padding: 1px; border-radius: 5px; }
.float-body .seg-sm .seg-btn { padding: 1px 6px; font-size: 9px; }

.float-tip {
  font-size: 10px;
  color: var(--ink3);
  text-align: center;
  line-height: 1.4;
  padding-top: 2px;
}

@media (max-width: 520px) {
  .float-panel {
    width: calc(100vw - 32px);
    max-width: 280px;
  }
}