:root {
  --bg: #f5f6f8;
  --panel: #fff;
  --ink: #2b2f36;
  --muted: #7b8089;
  --line: #dfe3ea;
  --soft: #f7f8fa;
  --blue: #3f7cff;
  --blue-soft: #edf3ff;
  --red: #c84646;
  --shadow: 0 8px 24px rgba(24, 33, 51, 0.06);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); }
input, select, button { font: inherit; }
input[type="number"] { appearance: textfield; -moz-appearance: textfield; }
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button { appearance: none; -webkit-appearance: none; margin: 0; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .55; }
a { color: inherit; }

.app { min-height: 100vh; padding: 14px; }
.topbar {
  max-width: 1500px;
  margin: 0 auto 14px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: center;
}
.brand { display: flex; gap: 12px; align-items: center; min-width: 0; }
.mark {
  width: 40px; height: 40px; border-radius: 8px;
  display: grid; place-items: center;
  background: var(--blue); color: #fff; font-weight: 800;
}
h1 { margin: 0; font-size: 22px; line-height: 1.15; }
.subtitle { margin-top: 4px; color: var(--muted); font-size: 13px; }

.layout {
  max-width: 1500px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(460px, 1fr) minmax(440px, .95fr);
  gap: 16px;
  align-items: start;
}
.stack { display: grid; gap: 16px; min-width: 0; }
.panel, .profit-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.panel-head {
  min-height: 58px;
  padding: 0 20px;
  background: var(--soft);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.panel-title { margin: 0; font-size: 20px; font-weight: 760; }
.panel-note { color: #9aa0a9; font-size: 14px; white-space: nowrap; }
.panel-body { padding: 22px 24px; display: grid; gap: 18px; }

.field-row {
  display: grid;
  grid-template-columns: 150px minmax(200px, 1fr) 150px;
  gap: 12px;
  align-items: center;
  min-height: 46px;
}
.field-row.slim { grid-template-columns: 150px repeat(3, minmax(110px, 1fr)); }
.field-row.slim .input-wrap { grid-template-columns: minmax(54px, 1fr) 58px; }
.field-row.slim .input-wrap input { padding: 0 8px; }
.field-row.slim .unit { font-size: 15px; }
.field-label { justify-self: end; font-size: 18px; font-weight: 650; text-align: right; }
.field-label small { display: block; margin-top: 4px; color: #9aa0a9; font-size: 12px; font-weight: 500; }
.input-wrap {
  display: grid;
  grid-template-columns: 1fr 80px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
}
.input-wrap:focus-within { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(63, 124, 255, .13); }
.input-wrap input, .input-wrap select {
  min-width: 0; width: 100%; border: 0; outline: 0;
  padding: 0 14px; color: var(--ink); background: #fff;
  font-size: 17px; text-align: right;
}
.input-wrap select { appearance: none; text-align: left; }
.input-wrap.readonly input { color: #535a65; background: #fbfcfe; }
.unit {
  display: grid; place-items: center;
  background: #f8f9fb;
  border-left: 1px solid var(--line);
  color: #6b7078;
  font-size: 17px;
  white-space: nowrap;
}
.mirror { color: #73777f; font-size: 18px; text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.mirror.warning { color: #a35b00; font-weight: 700; }
.conversion-box {
  grid-column: 2 / 4;
  display: grid;
  grid-template-columns: repeat(3, minmax(120px, 1fr));
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfe;
}
.conversion-item { display: grid; gap: 4px; color: var(--muted); font-size: 12px; }
.conversion-value { color: #333943; font-size: 16px; font-weight: 720; font-variant-numeric: tabular-nums; white-space: nowrap; }

.profit-body { padding: 22px 28px; display: grid; gap: 14px; }
.profit-main { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: baseline; }
.profit-label { font-size: 22px; font-weight: 760; }
.profit-value { text-align: right; color: var(--blue); font-size: 28px; font-weight: 800; font-variant-numeric: tabular-nums; }
.profit-value.bad { color: var(--red); }
.margin-standalone {
  padding: 18px 20px;
  border-radius: 8px;
  background: var(--blue-soft);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
}
.margin-label { font-size: 18px; font-weight: 720; }
.margin-value { color: var(--blue); font-size: 38px; font-weight: 850; font-variant-numeric: tabular-nums; }
.margin-standalone.bad { background: #fff1f1; }
.margin-standalone.bad .margin-value { color: var(--red); }
.result-section { border-top: 1px solid var(--line); padding: 22px 28px 24px; display: grid; gap: 16px; }
.subtotal, .result-row { display: grid; grid-template-columns: 150px minmax(140px, 1fr) minmax(140px, 1fr); gap: 12px; align-items: baseline; }
.subtotal-title { font-size: 20px; font-weight: 760; }
.subtotal-value { text-align: right; font-size: 24px; font-weight: 800; white-space: nowrap; }
.result-list { display: grid; gap: 12px; }
.result-row { color: #565d68; font-size: 16px; align-items: center; }
.result-number { text-align: right; white-space: nowrap; }

.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.button, .icon-button {
  height: 36px;
  border: 1px solid #c8ced8;
  border-radius: 7px;
  background: #fff;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 12px;
}
.button.primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.button.danger { color: var(--red); border-color: #f0b7b7; }
.button.compact { height: 30px; padding: 0 10px; font-size: 13px; }
.icon-button { width: 40px; padding: 0; }
.toggle { display: inline-flex; gap: 8px; align-items: center; color: #555b65; font-size: 15px; }
.toggle input { width: 17px; height: 17px; margin: 0; accent-color: var(--blue); }

table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 14px; }
th, td { padding: 10px 12px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; text-align: right; white-space: nowrap; }
th { position: sticky; top: 0; background: #f7f8fa; color: #4c535f; font-weight: 760; z-index: 1; }
th:first-child, td:first-child { text-align: left; }
th:last-child, td:last-child { border-right: 0; }
tr:last-child td { border-bottom: 0; }
.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 8px; }
.empty-state { padding: 22px; color: var(--muted); text-align: center; border: 1px dashed #c8ced8; border-radius: 8px; background: #fbfcfe; }

.link-tool { display: grid; gap: 10px; }
.link-label { color: #4c535f; font-size: 14px; font-weight: 700; }
.link-input-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; }
.link-input-row input {
  min-width: 0;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 11px;
  outline: 0;
}
.link-input-row input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(63, 124, 255, .13); }
.link-error { min-height: 18px; color: var(--red); font-size: 13px; }
.link-result {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfe;
  display: grid;
  gap: 10px;
}
.link-result[hidden] { display: none; }
.link-item-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 13px; }
.link-item-row strong { color: var(--ink); font-size: 17px; font-variant-numeric: tabular-nums; }
.generated-url { min-width: 0; color: var(--blue); font-size: 13px; overflow-wrap: anywhere; }
.link-actions { display: flex; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }

.side-grid { max-width: 1500px; margin: 16px auto 0; display: grid; grid-template-columns: minmax(260px, 1fr) minmax(260px, 1fr); gap: 16px; }
.rate-image-wrap { max-height: 360px; overflow: auto; background: #f8f5ed; }
.rate-image { width: 760px; max-width: none; display: block; }
.formula-list { padding: 18px 20px 20px; display: grid; gap: 12px; color: #515864; font-size: 14px; line-height: 1.45; }
.formula-row { display: grid; grid-template-columns: 92px 1fr; gap: 12px; }
.formula-row strong { color: var(--ink); }

.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 18px; }
.login-card { width: min(430px, 100%); background: #fff; border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow); padding: 26px; display: grid; gap: 18px; }
.login-card h1 { font-size: 24px; }
.login-card label { display: grid; gap: 8px; font-weight: 650; }
.login-card input { height: 42px; border: 1px solid var(--line); border-radius: 6px; padding: 0 12px; }
.message { color: var(--red); min-height: 20px; font-size: 14px; }
.toast { position: fixed; right: 22px; bottom: 20px; padding: 10px 13px; border-radius: 8px; color: #fff; background: #172033; box-shadow: var(--shadow); font-size: 13px; opacity: 0; transform: translateY(8px); pointer-events: none; transition: opacity 180ms ease, transform 180ms ease; z-index: 20; }
.toast.show { opacity: 1; transform: translateY(0); }

.admin-grid { max-width: 1500px; margin: 0 auto; display: grid; gap: 16px; }
.admin-form { display: grid; grid-template-columns: repeat(4, minmax(130px, 1fr)); gap: 12px; align-items: end; }
.admin-form label { display: grid; gap: 6px; color: #4c535f; font-size: 13px; }
.admin-form input, .admin-form select { height: 38px; border: 1px solid var(--line); border-radius: 6px; padding: 0 10px; }
.import-form {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfe;
}
.file-picker {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #4c535f;
  font-size: 13px;
  font-weight: 650;
}
.file-picker input {
  max-width: 280px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  padding: 7px 10px;
}

@media (max-width: 1120px) {
  .layout, .side-grid { grid-template-columns: 1fr; }
}
@media (min-width: 1121px) and (max-width: 1500px) {
  .app { padding: 10px; }
  .topbar, .layout, .side-grid, .admin-grid { max-width: none; }
  .topbar { margin-bottom: 10px; gap: 10px; }
  .topbar .toolbar { gap: 8px; justify-content: flex-end; }
  .topbar .toolbar .input-wrap { width: clamp(190px, 22vw, 260px) !important; }
  .rate-status, #rateStatus { display: inline-block; max-width: 260px; overflow: hidden; text-overflow: ellipsis; }
  .layout {
    grid-template-columns: minmax(560px, 1.05fr) minmax(500px, .95fr);
    gap: 10px;
  }
  .stack, .admin-grid { gap: 10px; }
  .side-grid { margin-top: 10px; gap: 10px; }
  .panel-head { min-height: 46px; padding: 0 14px; }
  .panel-title { font-size: 18px; }
  .panel-note { font-size: 12px; }
  .panel-body { padding: 14px 16px; gap: 10px; }
  .field-row {
    grid-template-columns: 118px minmax(170px, 1fr) 132px;
    gap: 8px;
    min-height: 36px;
  }
  .field-row.slim { grid-template-columns: 118px repeat(3, minmax(96px, 1fr)); }
  .field-label { font-size: 15px; }
  .input-wrap { height: 34px; grid-template-columns: minmax(72px, 1fr) 66px; }
  .input-wrap input, .input-wrap select { font-size: 15px; padding: 0 9px; }
  .unit { font-size: 14px; }
  .mirror { font-size: 14px; }
  .conversion-box { gap: 6px; padding: 7px 9px; grid-template-columns: repeat(3, minmax(90px, 1fr)); }
  .conversion-item { gap: 2px; font-size: 11px; }
  .conversion-value { font-size: 13px; }
  .profit-body { padding: 14px 16px; gap: 8px; }
  .profit-main { gap: 10px; }
  .profit-label { font-size: 18px; }
  .profit-value { font-size: 23px; line-height: 1.15; }
  .margin-standalone { padding: 10px 12px; }
  .margin-label { font-size: 15px; }
  .margin-value { font-size: 28px; }
  .result-section { padding: 13px 16px 14px; gap: 8px; }
  .subtotal, .result-row {
    grid-template-columns: 118px minmax(116px, 1fr) minmax(116px, 1fr);
    gap: 8px;
  }
  .subtotal-title { font-size: 17px; }
  .subtotal-value { font-size: 20px; }
  .result-list { gap: 7px; }
  .result-row { font-size: 14px; }
  .button, .icon-button { height: 32px; }
  .icon-button { width: 34px; }
  .empty-state { padding: 14px; }
  table { font-size: 12px; }
  th, td { padding: 7px 9px; }
  .rate-image-wrap { max-height: 260px; }
  .formula-list { padding: 12px 14px 14px; gap: 8px; font-size: 13px; }
}
@media (max-height: 900px) and (min-width: 1121px) {
  .app { padding-top: 8px; }
  h1 { font-size: 19px; }
  .subtitle { margin-top: 2px; font-size: 12px; }
  .mark { width: 34px; height: 34px; }
  .topbar { margin-bottom: 8px; }
  .panel-head { min-height: 40px; }
  .panel-body { padding-top: 11px; padding-bottom: 11px; gap: 8px; }
  .field-row { min-height: 32px; }
  .input-wrap { height: 32px; }
  .conversion-box { padding-top: 6px; padding-bottom: 6px; }
  .profit-body { padding-top: 11px; padding-bottom: 11px; }
  .result-section { padding-top: 10px; padding-bottom: 10px; }
  .side-grid { margin-top: 8px; }
}
@media (max-width: 720px) {
  .app { padding: 10px; }
  .topbar { grid-template-columns: 1fr; align-items: start; }
  .field-row, .field-row.slim, .conversion-box, .profit-main, .subtotal, .result-row, .admin-form { grid-template-columns: 1fr; gap: 8px; }
  .field-label { justify-self: start; text-align: left; font-size: 16px; }
  .mirror, .profit-value, .subtotal-value, .result-number { text-align: left; }
  .margin-standalone { grid-template-columns: 1fr; }
  .file-picker { width: 100%; align-items: flex-start; flex-direction: column; }
  .file-picker input { width: 100%; max-width: none; }
  .import-form .panel-note { width: 100%; white-space: normal; line-height: 1.45; }
  .link-panel-head { align-items: flex-start; flex-direction: column; justify-content: center; gap: 3px; padding-top: 10px; padding-bottom: 10px; }
  .link-input-row { grid-template-columns: 1fr; }
  .link-input-row .button { width: 100%; }
}