/* ===== Ozon 定价计算器 ===== */
:root{
  --bg:#f3f5f9;
  --surface:#ffffff;
  --surface-2:#f8fafc;
  --ink:#0f172a;
  --ink-2:#475467;
  --ink-3:#8a94a6;
  --line:#e4e7ec;
  --line-2:#eef1f6;
  --brand:#005bff;
  --brand-dark:#0047c7;
  --brand-soft:#e9f0ff;
  --price:#e0332a;
  --profit:#0d9f6e;
  --warn:#b54708;
  --warn-bg:#fffaeb;
  --radius:18px;
  --shadow:0 1px 2px rgba(16,24,40,.04), 0 8px 24px -12px rgba(16,24,40,.14);
  --mono:"SF Mono",ui-monospace,"Cascadia Mono",Menlo,Consolas,monospace;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Inter","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--ink);
  background:
    radial-gradient(1200px 480px at 12% -8%, #e8f0ff 0%, rgba(232,240,255,0) 62%),
    radial-gradient(900px 420px at 92% -12%, #eef4ff 0%, rgba(238,244,255,0) 60%),
    var(--bg);
  min-height:100vh;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}

.wrap{width:min(1180px,100% - 40px);margin-inline:auto}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky;top:0;z-index:30;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:14px 0;flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:13px;min-width:0}
.logo{
  width:44px;height:44px;flex:0 0 44px;border-radius:13px;
  background:linear-gradient(145deg,#005bff,#3d82ff);
  color:#fff;font-weight:800;font-size:14px;letter-spacing:.4px;
  display:grid;place-items:center;
  box-shadow:0 6px 16px -6px rgba(0,91,255,.6);
}
.brand-text h1{font-size:17px;margin:0;font-weight:700;letter-spacing:-.2px}
.brand-text p{margin:2px 0 0;font-size:12.5px;color:var(--ink-3)}

.rate{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2)}
.rate label{white-space:nowrap}
.input.mini{width:104px}
.input.mini input{height:36px;font-size:14px}
.rate-src{
  font-size:10.5px;font-weight:600;line-height:1;
  padding:4px 7px;border-radius:6px;white-space:nowrap;
  color:var(--ink-3);background:#eef1f6;border:1px solid transparent;
  cursor:help;
}
.rate-src.live{color:#067647;background:#ecfdf3;border-color:#abefc6}
.rate-src.manual{color:var(--brand-dark);background:var(--brand-soft);border-color:#c7dbff}
.rate-src.fallback{color:var(--warn);background:var(--warn-bg);border-color:#fedf89}
.rate-src.loading{color:var(--ink-3);background:#eef1f6}
.rate-src.loading::after{content:'';display:inline-block;width:6px;height:6px;margin-left:4px;border-radius:50%;background:currentColor;animation:pulse 1s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.25}50%{opacity:1}}

/* ---------- 表单 ---------- */
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field label{
  font-size:12.5px;color:var(--ink-2);font-weight:500;
  display:flex;align-items:center;gap:6px;
}
.input{
  position:relative;display:flex;align-items:center;
  background:var(--surface);border:1px solid var(--line);
  border-radius:11px;transition:border-color .15s, box-shadow .15s, background .15s;
}
.input:hover{border-color:#cfd6e2}
.input:focus-within{
  border-color:var(--brand);
  box-shadow:0 0 0 3.5px rgba(0,91,255,.13);
}
.input input{
  flex:1 1 auto;width:100%;min-width:0;
  border:0;background:transparent;outline:none;
  height:42px;padding:0 12px;
  font-size:15px;font-weight:600;color:var(--ink);
  font-variant-numeric:tabular-nums;
  font-family:inherit;
}
.input input::-webkit-outer-spin-button,
.input input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.input input[type=number]{-moz-appearance:textfield}
.input .pre{padding-left:12px;color:var(--ink-3);font-size:13px;font-weight:600}
.input .pre + input{padding-left:5px}
.input .unit{padding-right:12px;color:var(--ink-3);font-size:12.5px;font-weight:600}
.input input:read-only{
  color:var(--ink-2);background:var(--surface-2);
  font-weight:600;cursor:default;
}
.is-read .input{background:var(--surface-2);border-style:dashed}
.is-read .input input{background:transparent}

/* ---------- 运价参数折叠条 ---------- */
.params{
  margin-top:22px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow);
  overflow:hidden;
}
.params summary{
  display:flex;align-items:center;gap:12px;
  padding:14px 18px;cursor:pointer;list-style:none;
  user-select:none;
}
.params summary::-webkit-details-marker{display:none}
.params summary:hover{background:var(--surface-2)}
.ptitle{font-size:13.5px;font-weight:700;color:var(--ink)}
.formula{
  font-family:var(--mono);font-size:11.5px;color:var(--ink-2);
  background:var(--surface-2);border:1px solid var(--line-2);
  padding:4px 9px;border-radius:7px;white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis;
}
.chev{
  margin-left:auto;flex:0 0 auto;
  width:8px;height:8px;border-right:2px solid var(--ink-3);border-bottom:2px solid var(--ink-3);
  transform:rotate(45deg) translateY(-2px);transition:transform .2s;
}
.params[open] .chev{transform:rotate(-135deg) translateY(-2px)}
.params-body{padding:4px 18px 18px;border-top:1px solid var(--line-2)}
.params-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:14px;
}
.params-note{
  margin:14px 0 0;font-size:12.5px;color:var(--ink-3);line-height:1.6;
}
.params-note b{color:var(--ink-2);font-family:var(--mono);font-size:12px}

/* ---------- 卡片布局 ---------- */
.grid{
  display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:20px;
  align-items:stretch;
}
.card{
  height:100%;
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:24px;
}
.card.wide{margin-top:20px;height:auto}

.card-hd{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:20px}
.card-hd h2{
  margin:0;font-size:16px;font-weight:700;letter-spacing:-.2px;
  display:flex;align-items:center;gap:9px;
}
.idx{
  font-family:var(--mono);font-size:11px;font-weight:700;
  color:var(--brand);background:var(--brand-soft);
  padding:3px 6px;border-radius:6px;letter-spacing:.3px;
}
.card-hd .sub{margin:5px 0 0;font-size:12.5px;color:var(--ink-3)}

.fields{display:grid;grid-template-columns:1fr 1fr;gap:13px 14px}
.fields.secondary{margin-top:14px}
.field.span-2{grid-column:1 / -1}

/* 核心输入组：更重的视觉权重 */
.fields.primary-group{
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:11px 12px;
  padding:15px 14px 16px;
  border-radius:15px;
  background:linear-gradient(180deg,#f7faff 0%,#f1f6ff 100%);
  border:1px solid #dde8ff;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.9);
}
.field.primary label{
  font-size:13px;font-weight:600;color:var(--ink-2);letter-spacing:.1px;
}
.field.primary .input{
  background:#fff;border-color:#cbdcff;border-radius:12px;
  box-shadow:0 1px 2px rgba(0,91,255,.06);
}
.field.primary .input:hover{border-color:#a9c4ff}
.field.primary .input:focus-within{
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(0,91,255,.15);
}
.field.primary .input input{
  height:54px;font-size:21px;font-weight:700;
  letter-spacing:-.4px;padding:0 12px;
}
.field.primary .input .pre{
  padding-left:13px;font-size:15px;font-weight:700;color:var(--ink-2);
}
.field.primary .input .pre + input{padding-left:4px}
.field.primary .input .unit{
  padding-right:13px;font-size:13.5px;font-weight:700;color:var(--ink-2);
}

/* ---------- 结果区 ---------- */
.result{
  margin-top:20px;padding:18px;
  background:linear-gradient(180deg,#fbfcff 0%, #f7f9fe 100%);
  border:1px solid var(--line-2);
  border-radius:14px;
}
.result-main{display:flex;flex-direction:column;gap:4px}
.result-main .label{font-size:12.5px;color:var(--ink-2);font-weight:600}
.big{
  display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;
  line-height:1.1;
}
.big .cny{
  display:inline-flex;align-items:baseline;gap:2px;
  color:var(--price);font-variant-numeric:tabular-nums;
}
.big .cny i{font-style:normal;font-size:20px;font-weight:700;opacity:.8;margin-right:1px}
.big .cny b{font-size:42px;font-weight:800;letter-spacing:-1.2px}
.big .cny.pct b{font-size:42px}
.big .cny.pct i{font-size:22px}
.big .rub{
  font-size:13.5px;color:var(--ink-3);font-weight:600;
  font-variant-numeric:tabular-nums;
}
.big .rub b{color:var(--ink-2);font-weight:700}
.msg{font-size:12px;color:var(--warn);background:var(--warn-bg);border-radius:6px;padding:0;margin-top:2px}
.msg:not(:empty){padding:5px 9px;margin-top:6px}
.msg.err{color:#b42318;background:#fef3f2}

.meter{
  margin-top:12px;height:6px;border-radius:99px;background:#e8ecf3;overflow:hidden;
}
.meter span{
  display:block;height:100%;width:0;border-radius:99px;
  background:linear-gradient(90deg,#12b981,#0d9f6e);
  transition:width .28s ease, background .28s ease;
}

.kv{
  margin:16px 0 0;padding-top:14px;border-top:1px dashed var(--line);
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;
}
.kv-item{min-width:0}
.kv dt{
  font-size:11.5px;color:var(--ink-3);font-weight:500;
  display:flex;align-items:center;gap:4px;flex-wrap:wrap;
  margin-bottom:3px;
}
.kv dd{
  margin:0;font-size:16px;font-weight:700;color:var(--ink);
  font-variant-numeric:tabular-nums;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.kv dd i{font-style:normal;font-size:11px;color:var(--ink-3);font-weight:600;margin-left:2px}
.kv dd.neg{color:var(--price)}

/* 卡片底部内容贴底（让两卡片等高时更整齐） */
.card > .breakdown:last-child{margin-top:auto;padding-top:20px}

/* 结果区重点数字：毛利额 / 个促活动售价 */
.kv-hero{margin-top:16px}
.kv-hero dd{font-size:23px;letter-spacing:-.4px}
.kv-hero dd i{font-size:12px}
.kv-item-accent{position:relative}
.kv-item-accent dd{color:var(--price);font-size:26px}
.kv-item-accent::before{
  content:'';position:absolute;left:-9px;top:2px;bottom:2px;width:3px;
  border-radius:2px;background:linear-gradient(180deg,#ff8a80,#e0332a);
}

/* 毛利率 / 成本利润率 并排 */
.pct-row{display:flex;align-items:stretch;gap:18px}
.pct-cell{flex:1 1 0;min-width:0;display:flex;flex-direction:column;gap:3px}
.pct-cell .label{font-size:12.5px;color:var(--ink-2);font-weight:600}
.pct-divider{width:1px;background:linear-gradient(180deg,rgba(228,231,236,0),#dfe4ec,rgba(228,231,236,0))}
.pct-cell.neg .big .cny b,
.pct-cell.neg .big .cny i{color:var(--price)}
.state-line{display:block;margin-top:8px;font-size:13px;font-weight:600;color:var(--ink-2)}
.tag-inline{
  font-family:var(--mono);font-size:9.5px;font-weight:600;
  color:var(--ink-3);background:#eef1f6;
  padding:1px 4px;border-radius:4px;letter-spacing:.2px;
}

/* ---------- 构成条 ---------- */
.breakdown{margin-top:20px}
.breakdown-hd{
  display:flex;justify-content:space-between;align-items:baseline;
  font-size:12.5px;font-weight:600;color:var(--ink-2);margin-bottom:9px;
}
.breakdown-hd span{font-size:11.5px;color:var(--ink-3);font-weight:500}
.bar{
  display:flex;height:10px;border-radius:99px;overflow:hidden;
  background:#eef1f6;
}
.bar span{height:100%;transition:width .28s ease}
.legend{
  list-style:none;margin:12px 0 0;padding:0;
  display:grid;grid-template-columns:1fr 1fr;gap:7px 14px;
}
.legend li{
  display:flex;align-items:center;gap:7px;font-size:12px;color:var(--ink-2);
  min-width:0;
}
.legend .dot{width:8px;height:8px;border-radius:3px;flex:0 0 8px}
.legend .name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.legend .val{
  margin-left:auto;font-variant-numeric:tabular-nums;font-weight:600;color:var(--ink);
  white-space:nowrap;
}
.legend .pctnum{color:var(--ink-3);font-weight:500;font-size:11px;min-width:38px;text-align:right}

/* ---------- 敏感性表（独立横向卡片） ---------- */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 -4px}
.matrix{
  width:100%;border-collapse:separate;border-spacing:0;
  font-size:13.5px;font-variant-numeric:tabular-nums;
  min-width:560px;
}
.matrix th,.matrix td{
  padding:11px 14px;text-align:right;white-space:nowrap;
  border-bottom:1px solid var(--line-2);
}
.matrix thead th{
  font-size:11.5px;font-weight:600;color:var(--ink-3);
  background:var(--surface-2);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;
}
.matrix thead th:first-child{text-align:left;border-radius:9px 0 0 0}
.matrix thead th:last-child{border-radius:0 9px 0 0}
.matrix tbody th{
  text-align:left;font-weight:600;color:var(--ink-2);font-size:12.5px;
  background:var(--surface);
}
.matrix tbody td{color:var(--ink);font-weight:600}
.matrix tbody tr:last-child th,
.matrix tbody tr:last-child td{border-bottom:0}
.matrix tbody th.is-cur{color:var(--brand-dark)}
.cur-tag{
  font-size:9px;font-weight:700;color:#fff;background:var(--brand);
  padding:1px 4px;border-radius:4px;margin-left:3px;vertical-align:1px;
}
.matrix td.hit{
  background:var(--brand-soft);color:var(--brand-dark);
  box-shadow:inset 0 0 0 1.5px rgba(0,91,255,.35);
  border-radius:7px;
}
.matrix td.na{color:var(--ink-3);font-weight:400}

/* ---------- 按钮 ---------- */
.actions{display:flex;gap:10px;justify-content:center;margin-top:22px;flex-wrap:wrap}
.btn{
  appearance:none;border:1px solid var(--brand);
  background:var(--brand);color:#fff;
  font-family:inherit;font-size:13.5px;font-weight:600;
  padding:10px 20px;border-radius:10px;cursor:pointer;
  transition:background .15s, border-color .15s, transform .06s;
}
.btn:hover{background:var(--brand-dark);border-color:var(--brand-dark)}
.btn:active{transform:translateY(1px)}
.btn.ghost{background:var(--surface);color:var(--ink-2);border-color:var(--line)}
.btn.ghost:hover{background:var(--surface-2);border-color:#cfd6e2;color:var(--ink)}

/* ---------- 页脚 ---------- */
.footer{
  margin-top:36px;padding:22px 0 34px;
  border-top:1px solid var(--line);
  background:rgba(255,255,255,.5);
}
.footer p{margin:0;font-size:12.5px;color:var(--ink-2)}
.footer p.fine{color:var(--ink-3);margin-top:5px;font-size:11.5px;line-height:1.6}

/* ---------- Toast ---------- */
.toast{
  position:fixed;left:50%;bottom:32px;transform:translate(-50%,16px);
  background:#101828;color:#fff;font-size:13px;font-weight:500;
  padding:10px 18px;border-radius:10px;
  opacity:0;pointer-events:none;transition:opacity .2s, transform .2s;
  z-index:60;box-shadow:0 10px 30px -8px rgba(16,24,40,.5);
}
.toast.on{opacity:1;transform:translate(-50%,0)}

/* ---------- 响应式 ---------- */
@media (max-width:900px){
  .grid{grid-template-columns:1fr}
  .wrap{width:calc(100% - 28px)}
}
@media (max-width:640px){
  .topbar-inner{padding:12px 0}
  .brand-text h1{font-size:15.5px}
  .brand-text p{font-size:11.5px}
  .rate{width:100%;justify-content:flex-start}
  .card{padding:18px;border-radius:15px}
  .params-grid{grid-template-columns:1fr 1fr}
  .fields{gap:12px 10px}
  .fields.primary-group{padding:13px 11px 14px;gap:10px 9px}
  .field.primary .input input{height:50px;font-size:19px;padding:0 9px}
  .field.primary .input .pre{padding-left:10px;font-size:13px}
  .field.primary .input .pre + input{padding-left:3px}
  .field.primary .input .unit{padding-right:10px;font-size:11.5px}
  .field.primary label{font-size:12px}
  .input input{height:40px;font-size:14px}
  .big .cny b{font-size:34px}
  .kv{grid-template-columns:1fr 1fr}
  .kv-item:last-child{grid-column:1 / -1}
  .legend{grid-template-columns:1fr}
  .formula{display:none}
}
@media (max-width:480px){
  .fields.primary-group{grid-template-columns:1fr 1fr}
  .fields.primary-group .field.primary:nth-child(3){grid-column:1 / -1}
  .field.primary .input input{font-size:20px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}
@media print{
  body{background:#fff}
  .topbar{position:static;backdrop-filter:none}
  .params,.actions,.toast{display:none}
  .card{box-shadow:none;break-inside:avoid}
}