/* ============================================================
   票据贴现与保理成本计算器 · 独立视觉：票据柜台 / 银行承兑汇票
   结构：票据凭证卡（左）+ 贴现回执（右）
         下方：贴现 vs 保理 → 期限敏感度 → 批量 → AI → 说明
   ============================================================ */

.bdf-page {
  --bdf-paper: #f5efe2;
  --bdf-panel: #fffdf8;
  --bdf-card: #fffaf0;
  --bdf-ink: #241f18;
  --bdf-ink-2: #3c352b;
  --bdf-muted: #7b7264;
  --bdf-line: #e0d5c1;
  --bdf-line-2: #cbbb9f;
  --bdf-seal: #bf3b2b;
  --bdf-seal-soft: #f3ded6;
  --bdf-brass: #a8762c;
  --bdf-forest: #2f6350;
  --bdf-forest-soft: #e2ece6;
  --bdf-slate: #4a5a6d;
  --bdf-ok: #1f6b4d;
  --bdf-warn: #9a6414;
  --bdf-bad: #a83322;
  --bdf-shadow: 0 20px 48px rgba(66, 51, 25, .12);
  --bdf-shadow-sm: 0 6px 18px rgba(66, 51, 25, .07);
  --bdf-serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  --bdf-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  background:
    radial-gradient(980px 420px at 88% -180px, rgba(191, 59, 43, .09), transparent 66%),
    radial-gradient(900px 380px at 2% -140px, rgba(168, 118, 44, .10), transparent 70%),
    repeating-linear-gradient(0deg, rgba(120, 100, 70, .026) 0 1px, transparent 1px 34px),
    var(--bdf-paper);
  color: var(--bdf-ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  padding-bottom: 56px;
  transition: background-color .2s ease, color .2s ease;
}

:root[data-theme="dark"] .bdf-page {
  --bdf-paper: #100e0a;
  --bdf-panel: #1a1610;
  --bdf-card: #201b14;
  --bdf-ink: #f0e8d9;
  --bdf-ink-2: #d8cdb9;
  --bdf-muted: #a2977f;
  --bdf-line: #312a20;
  --bdf-line-2: #463c2c;
  --bdf-seal: #ff8366;
  --bdf-seal-soft: #3a211b;
  --bdf-brass: #e3b268;
  --bdf-forest: #78c3a7;
  --bdf-forest-soft: #17352c;
  --bdf-slate: #9fb2c5;
  --bdf-ok: #5cc79a;
  --bdf-warn: #e6b35f;
  --bdf-bad: #ff8f74;
  --bdf-shadow: 0 20px 48px rgba(0, 0, 0, .58);
  --bdf-shadow-sm: 0 6px 18px rgba(0, 0, 0, .45);
  background:
    radial-gradient(980px 420px at 88% -180px, rgba(255, 131, 102, .08), transparent 66%),
    radial-gradient(900px 380px at 2% -140px, rgba(227, 178, 104, .07), transparent 70%),
    repeating-linear-gradient(0deg, rgba(255, 240, 210, .018) 0 1px, transparent 1px 34px),
    var(--bdf-paper);
}

html[data-theme="dark"] .bdf-page { color-scheme: dark; }

.bdf-wrap {
  max-width: 1160px;
  margin: 0 auto;
  padding: 14px 20px 0;
}

/* ---------- 面包屑 ---------- */
.bdf-crumb { font-size: 13px; color: var(--bdf-muted); margin-bottom: 12px; }
.bdf-crumb a { color: var(--bdf-muted); text-decoration: none; }
.bdf-crumb a:hover { color: var(--bdf-seal); }

/* ---------- 标题区 ---------- */
.bdf-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 32px;
  align-items: center;
  padding: 6px 0 26px;
  border-bottom: 1px solid var(--bdf-line);
  margin-bottom: 22px;
}
.bdf-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--bdf-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--bdf-brass);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.bdf-eyebrow::before {
  content: "";
  width: 14px;
  height: 2px;
  background: var(--bdf-seal);
}
.bdf-hero h1 {
  font-family: var(--bdf-serif);
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.22;
  letter-spacing: -.01em;
  margin: 0 0 12px;
  font-weight: 700;
}
.bdf-hero h1 b { color: var(--bdf-seal); font-weight: 700; }
.bdf-sub {
  margin: 0;
  max-width: 620px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--bdf-muted);
}
.bdf-sub b { color: var(--bdf-ink); font-weight: 700; }
.bdf-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.bdf-hero-tags span {
  font-size: 12px;
  line-height: 1;
  padding: 7px 11px;
  border: 1px solid var(--bdf-line-2);
  border-radius: 999px;
  color: var(--bdf-ink-2);
  background: color-mix(in srgb, var(--bdf-panel) 65%, transparent);
}

/* 首屏小票据 */
.bdf-hero-bill {
  position: relative;
  padding: 16px 18px 18px;
  border: 1px solid var(--bdf-line-2);
  border-radius: 4px;
  background:
    linear-gradient(180deg, var(--bdf-card), color-mix(in srgb, var(--bdf-card) 88%, var(--bdf-paper)));
  box-shadow: var(--bdf-shadow-sm);
  transform: rotate(-1.2deg);
  overflow: hidden;
}
.bdf-hero-bill::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: linear-gradient(180deg, var(--bdf-seal), var(--bdf-brass));
}
.bdf-hero-bill::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  top: 62px;
  border-top: 1px dashed var(--bdf-line-2);
}
.bdf-hb-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-left: 6px;
}
.bdf-hb-top span {
  font-family: var(--bdf-serif);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--bdf-ink-2);
}
.bdf-hb-top b {
  font-family: var(--bdf-mono);
  font-size: 10px;
  letter-spacing: .08em;
  color: var(--bdf-muted);
}
.bdf-hb-face {
  padding: 16px 0 10px 6px;
}
.bdf-hb-face small {
  display: block;
  font-size: 11px;
  color: var(--bdf-muted);
  letter-spacing: .08em;
}
.bdf-hb-face b {
  font-family: var(--bdf-mono);
  font-size: 24px;
  letter-spacing: -.02em;
  color: var(--bdf-ink);
}
.bdf-hb-meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 4px 74px 0 6px;
  font-size: 11.5px;
  color: var(--bdf-muted);
}
.bdf-hb-meta span { white-space: nowrap; }
.bdf-hb-meta b { font-family: var(--bdf-mono); font-weight: 600; color: var(--bdf-ink-2); }
.bdf-hb-net {
  margin: 10px 0 0 6px;
  padding-right: 68px;
  font-family: var(--bdf-mono);
  font-size: 13px;
  color: var(--bdf-forest);
  font-weight: 700;
  white-space: nowrap;
}
.bdf-hb-net i {
  font-style: normal;
  font-family: var(--bdf-serif);
  font-size: 11.5px;
  font-weight: 400;
  letter-spacing: .06em;
  color: var(--bdf-muted);
  margin-right: 6px;
}
.bdf-seal {
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 66px;
  height: 66px;
  border: 2px solid var(--bdf-seal);
  border-radius: 50%;
  display: grid;
  place-content: center;
  text-align: center;
  font-family: var(--bdf-serif);
  font-size: 15px;
  line-height: 1.15;
  letter-spacing: .1em;
  color: var(--bdf-seal);
  opacity: .82;
  transform: rotate(-12deg);
}
.bdf-seal::before {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px solid var(--bdf-seal);
  border-radius: 50%;
  opacity: .55;
}

/* ---------- 工作台 ---------- */
.bdf-board {
  display: grid;
  grid-template-columns: minmax(0, 400px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

/* 票据凭证 */
.bdf-sheet {
  position: relative;
  border: 1px solid var(--bdf-line-2);
  border-radius: 6px;
  background:
    radial-gradient(300px 160px at 100% 0%, rgba(191, 59, 43, .06), transparent 70%),
    linear-gradient(180deg, var(--bdf-card), color-mix(in srgb, var(--bdf-card) 92%, var(--bdf-paper)));
  box-shadow: var(--bdf-shadow);
  overflow: hidden;
}
.bdf-sheet::before,
.bdf-sheet::after {
  content: "";
  position: absolute;
  top: 12px;
  bottom: 12px;
  width: 0;
  border-left: 1px dashed var(--bdf-line-2);
  opacity: .7;
}
.bdf-sheet::before { left: 13px; }
.bdf-sheet::after { right: 13px; }

.bdf-sheet-top {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 26px 14px;
  border-bottom: 1px solid var(--bdf-line);
}
.bdf-sheet-top div { display: flex; flex-direction: column; gap: 2px; }
.bdf-sheet-kicker {
  font-family: var(--bdf-serif);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--bdf-ink);
}
.bdf-sheet-top small {
  font-family: var(--bdf-mono);
  font-size: 9.5px;
  letter-spacing: .18em;
  color: var(--bdf-muted);
}
.bdf-sheet-serial {
  font-family: var(--bdf-mono);
  font-size: 10.5px;
  color: var(--bdf-seal);
  border: 1px solid color-mix(in srgb, var(--bdf-seal) 40%, transparent);
  border-radius: 3px;
  padding: 3px 7px;
  white-space: nowrap;
}

.bdf-sheet-body { position: relative; padding: 18px 26px 16px; }

.bdf-field { margin-bottom: 16px; }
.bdf-field-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 4px;
}
.bdf-field label {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--bdf-ink-2);
  letter-spacing: .02em;
}
.bdf-field-top em {
  font-style: normal;
  font-size: 11px;
  color: var(--bdf-muted);
}
.bdf-under {
  display: flex;
  align-items: baseline;
  gap: 6px;
  border-bottom: 1.5px dashed var(--bdf-line-2);
  padding-bottom: 5px;
  transition: border-color .16s ease, background-color .16s ease;
}
.bdf-under:focus-within {
  border-bottom-color: var(--bdf-seal);
  background: linear-gradient(0deg, rgba(191, 59, 43, .05), transparent);
}
.bdf-under .cur {
  font-family: var(--bdf-mono);
  font-size: 16px;
  color: var(--bdf-muted);
}
.bdf-under input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  outline: none;
  color: var(--bdf-ink);
  font-family: var(--bdf-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -.01em;
  padding: 2px 0;
  -moz-appearance: textfield;
}
.bdf-under input::-webkit-outer-spin-button,
.bdf-under input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.bdf-under input::placeholder { color: var(--bdf-muted); font-weight: 400; }
.bdf-under .unit {
  font-size: 12px;
  color: var(--bdf-muted);
  white-space: nowrap;
}
.bdf-field.big .bdf-under input { font-size: 25px; }
.bdf-field.big .bdf-under .cur { font-size: 19px; }

.bdf-grid2 {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
}

.bdf-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 6px 0 2px;
}
.bdf-presets button {
  font-family: var(--bdf-mono);
  font-size: 11px;
  line-height: 1;
  padding: 6px 9px;
  border: 1px solid var(--bdf-line);
  border-radius: 3px;
  background: transparent;
  color: var(--bdf-muted);
  cursor: pointer;
  transition: all .15s ease;
}
.bdf-presets button:hover { border-color: var(--bdf-line-2); color: var(--bdf-ink); }
.bdf-presets button.on {
  border-color: var(--bdf-seal);
  color: var(--bdf-seal);
  background: color-mix(in srgb, var(--bdf-seal) 8%, transparent);
  font-weight: 700;
}

.bdf-basis {
  display: inline-flex;
  border: 1px solid var(--bdf-line-2);
  border-radius: 4px;
  overflow: hidden;
}
.bdf-basis button {
  font-family: var(--bdf-mono);
  font-size: 12px;
  padding: 7px 13px;
  border: 0;
  background: transparent;
  color: var(--bdf-muted);
  cursor: pointer;
  transition: all .15s ease;
}
.bdf-basis button + button { border-left: 1px solid var(--bdf-line); }
.bdf-basis button.on {
  background: var(--bdf-ink);
  color: var(--bdf-paper);
  font-weight: 700;
}

.bdf-hint {
  margin: 4px 0 0;
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--bdf-muted);
}
.bdf-hint.err { color: var(--bdf-bad); font-weight: 600; }
.bdf-hint b { color: var(--bdf-ink-2); }

.bdf-sheet-foot {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
  padding: 12px 26px;
  border-top: 1px dashed var(--bdf-line-2);
  background: color-mix(in srgb, var(--bdf-paper) 55%, transparent);
  font-size: 11.5px;
  color: var(--bdf-muted);
}
.bdf-sheet-foot b {
  font-family: var(--bdf-mono);
  font-size: 12.5px;
  color: var(--bdf-ink-2);
}
.bdf-sheet-foot i {
  font-style: normal;
  margin-left: auto;
  font-family: var(--bdf-mono);
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--bdf-brass);
}
.bdf-watermark {
  position: absolute;
  right: 22px;
  top: 128px;
  font-family: var(--bdf-serif);
  font-size: 132px;
  line-height: 1;
  color: var(--bdf-seal);
  opacity: .045;
  pointer-events: none;
  user-select: none;
  writing-mode: vertical-rl;
}

/* 回执 */
.bdf-result {
  border: 1px solid var(--bdf-line);
  border-radius: 10px;
  background: var(--bdf-panel);
  box-shadow: var(--bdf-shadow-sm);
  padding: 18px 22px 20px;
}
.bdf-result-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--bdf-line);
}
.bdf-result-head h2 {
  font-family: var(--bdf-serif);
  font-size: 17px;
  margin: 0;
  letter-spacing: .04em;
}
.bdf-result-head span {
  font-family: var(--bdf-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  color: var(--bdf-muted);
  border: 1px solid var(--bdf-line);
  border-radius: 999px;
  padding: 4px 9px;
}

.bdf-net { padding: 16px 0 12px; }
.bdf-net small {
  display: block;
  font-size: 12px;
  color: var(--bdf-muted);
  letter-spacing: .06em;
  margin-bottom: 4px;
}
.bdf-net b {
  display: flex;
  align-items: baseline;
  gap: 5px;
  font-family: var(--bdf-serif);
  font-size: clamp(34px, 5vw, 46px);
  line-height: 1.05;
  letter-spacing: -.015em;
  color: var(--bdf-ink);
  font-variant-numeric: tabular-nums;
}
.bdf-net b em {
  font-style: normal;
  font-size: 21px;
  color: var(--bdf-brass);
  font-family: var(--bdf-mono);
}
.bdf-net i {
  display: block;
  margin-top: 7px;
  font-style: normal;
  font-size: 11.5px;
  color: var(--bdf-muted);
  font-family: var(--bdf-mono);
}

.bdf-flow { margin: 4px 0 16px; }
.bdf-flow-bar {
  display: flex;
  height: 30px;
  border-radius: 5px;
  overflow: hidden;
  background: var(--bdf-line);
  border: 1px solid var(--bdf-line);
}
.bdf-flow-bar span {
  display: block;
  height: 100%;
  transition: width .28s cubic-bezier(.4, 0, .2, 1);
}
.bdf-flow-bar .net { background: linear-gradient(180deg, #3f7b62, #2f6350); }
.bdf-flow-bar .int { background: linear-gradient(180deg, #d0604e, #bf3b2b); }
.bdf-flow-bar .fee { background: linear-gradient(180deg, #c39448, #a8762c); }
.bdf-flow-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-top: 8px;
  font-size: 11.5px;
  color: var(--bdf-muted);
}
.bdf-flow-legend span { display: inline-flex; align-items: center; gap: 6px; }
.bdf-flow-legend i {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  display: inline-block;
}
.bdf-flow-legend .net i { background: var(--bdf-forest); }
.bdf-flow-legend .int i { background: var(--bdf-seal); }
.bdf-flow-legend .fee i { background: var(--bdf-brass); }
.bdf-flow-legend b { color: var(--bdf-ink-2); font-family: var(--bdf-mono); font-weight: 600; }

.bdf-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--bdf-line);
  border: 1px solid var(--bdf-line);
  border-radius: 8px;
  overflow: hidden;
}
.bdf-metrics .cell {
  background: var(--bdf-panel);
  padding: 12px 13px;
}
.bdf-metrics .cell small {
  display: block;
  font-size: 11px;
  color: var(--bdf-muted);
  margin-bottom: 3px;
}
.bdf-metrics .cell b {
  display: block;
  font-family: var(--bdf-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--bdf-ink);
  letter-spacing: -.01em;
}
.bdf-metrics .cell i {
  display: block;
  margin-top: 2px;
  font-style: normal;
  font-size: 10.5px;
  color: var(--bdf-muted);
}
.bdf-metrics .cell.hot { background: color-mix(in srgb, var(--bdf-seal) 7%, var(--bdf-panel)); }
.bdf-metrics .cell.hot b { color: var(--bdf-seal); }

.bdf-result-note {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.8;
  color: var(--bdf-muted);
  padding-left: 12px;
  border-left: 2px solid var(--bdf-line-2);
}
.bdf-result-note b { color: var(--bdf-ink-2); }

/* ---------- 操作 ---------- */
.bdf-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 6px;
}
.bdf-btn {
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  padding: 11px 18px;
  border-radius: 5px;
  border: 1px solid var(--bdf-ink);
  background: var(--bdf-ink);
  color: var(--bdf-panel);
  cursor: pointer;
  transition: all .16s ease;
}
.bdf-btn:hover { background: var(--bdf-seal); border-color: var(--bdf-seal); }
.bdf-btn.ghost {
  background: transparent;
  color: var(--bdf-ink-2);
  border-color: var(--bdf-line-2);
}
.bdf-btn.ghost:hover {
  border-color: var(--bdf-brass);
  color: var(--bdf-brass);
  background: color-mix(in srgb, var(--bdf-brass) 7%, transparent);
}
.bdf-btn.small { padding: 9px 13px; font-size: 12px; }

/* ---------- 区块 ---------- */
.bdf-sec { margin-top: 34px; }
.bdf-sec-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--bdf-line);
}
.bdf-sec-head h2 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0;
  font-family: var(--bdf-serif);
  font-size: 21px;
  letter-spacing: .02em;
}
.bdf-sec-head h2 em {
  font-style: normal;
  font-family: var(--bdf-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--bdf-seal);
  border: 1px solid color-mix(in srgb, var(--bdf-seal) 35%, transparent);
  border-radius: 3px;
  padding: 2px 6px;
}
.bdf-sec-head p {
  margin: 0;
  font-size: 12.5px;
  color: var(--bdf-muted);
}

.bdf-card {
  border: 1px solid var(--bdf-line);
  border-radius: 10px;
  background: var(--bdf-panel);
  box-shadow: var(--bdf-shadow-sm);
  padding: 18px 20px;
}

/* ---------- 贴现 vs 保理 ---------- */
.bdf-compare {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 48px minmax(0, 1fr);
  gap: 0;
  align-items: stretch;
}
.bdf-plan {
  border: 1px solid var(--bdf-line);
  border-radius: 10px;
  background: var(--bdf-panel);
  box-shadow: var(--bdf-shadow-sm);
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
}
.bdf-plan.disc { border-top: 3px solid var(--bdf-forest); }
.bdf-plan.fact { border-top: 3px solid var(--bdf-brass); }
.bdf-plan header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 10px;
}
.bdf-plan header span {
  font-family: var(--bdf-mono);
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--bdf-muted);
}
.bdf-plan h3 {
  margin: 0;
  font-family: var(--bdf-serif);
  font-size: 17px;
  letter-spacing: .04em;
}
.bdf-plan-big {
  padding: 10px 12px;
  border-radius: 7px;
  background: color-mix(in srgb, var(--bdf-paper) 60%, transparent);
  border: 1px dashed var(--bdf-line-2);
  margin-bottom: 12px;
}
.bdf-plan-big small {
  display: block;
  font-size: 11px;
  color: var(--bdf-muted);
  margin-bottom: 2px;
}
.bdf-plan-big b {
  font-family: var(--bdf-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--bdf-ink);
  letter-spacing: -.02em;
}
.bdf-plan.disc .bdf-plan-big b { color: var(--bdf-forest); }
.bdf-plan.fact .bdf-plan-big b { color: var(--bdf-brass); }
.bdf-plan-big b s { text-decoration: none; font-size: 14px; color: var(--bdf-muted); }

.bdf-plan-inputs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}
.bdf-mini-field label {
  display: block;
  font-size: 11px;
  color: var(--bdf-muted);
  margin-bottom: 3px;
}
.bdf-mini-field div {
  display: flex;
  align-items: baseline;
  gap: 3px;
  border-bottom: 1px dashed var(--bdf-line-2);
  padding-bottom: 3px;
}
.bdf-mini-field input {
  width: 100%;
  min-width: 0;
  border: 0;
  background: transparent;
  outline: none;
  color: var(--bdf-ink);
  font-family: var(--bdf-mono);
  font-size: 14px;
  font-weight: 700;
  -moz-appearance: textfield;
}
.bdf-mini-field input::-webkit-outer-spin-button,
.bdf-mini-field input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.bdf-mini-field span { font-size: 11px; color: var(--bdf-muted); }
.bdf-plan-inputs.ro .bdf-mini-field div { border-bottom-style: solid; }
.bdf-plan-inputs.ro b {
  font-family: var(--bdf-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--bdf-forest);
  white-space: nowrap;
}

.bdf-plan-rows { list-style: none; margin: 0; padding: 0; }
.bdf-plan-rows li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 0;
  font-size: 12.5px;
  color: var(--bdf-muted);
  border-bottom: 1px dotted var(--bdf-line);
}
.bdf-plan-rows li:last-child { border-bottom: 0; }
.bdf-plan-rows b {
  font-family: var(--bdf-mono);
  font-weight: 600;
  color: var(--bdf-ink-2);
  white-space: nowrap;
}
.bdf-plan-rows b.hi { color: var(--bdf-seal); font-weight: 700; }

.bdf-vs {
  display: grid;
  place-content: center;
  font-family: var(--bdf-serif);
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--bdf-muted);
}
.bdf-vs span {
  display: grid;
  place-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--bdf-line-2);
  background: var(--bdf-panel);
}

.bdf-verdict {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
  padding: 13px 16px;
  border-radius: 8px;
  border: 1px solid var(--bdf-line);
  background: color-mix(in srgb, var(--bdf-panel) 80%, transparent);
  font-size: 13px;
  line-height: 1.7;
  color: var(--bdf-ink-2);
}
.bdf-verdict::before {
  content: "结论";
  flex: none;
  font-size: 10.5px;
  letter-spacing: .16em;
  padding: 3px 7px;
  border-radius: 3px;
  background: var(--bdf-ink);
  color: var(--bdf-panel);
}
.bdf-verdict.ok { border-color: color-mix(in srgb, var(--bdf-ok) 40%, transparent); background: color-mix(in srgb, var(--bdf-ok) 8%, var(--bdf-panel)); }
.bdf-verdict.ok::before { background: var(--bdf-ok); }
.bdf-verdict.warn { border-color: color-mix(in srgb, var(--bdf-warn) 40%, transparent); background: color-mix(in srgb, var(--bdf-warn) 9%, var(--bdf-panel)); }
.bdf-verdict.warn::before { background: var(--bdf-warn); }
.bdf-verdict b { font-family: var(--bdf-mono); color: var(--bdf-ink); }

/* ---------- 表格 ---------- */
.bdf-tbl-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.bdf-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
  min-width: 520px;
}
.bdf-table th,
.bdf-table td {
  padding: 9px 12px;
  text-align: right;
  border-bottom: 1px solid var(--bdf-line);
  white-space: nowrap;
}
.bdf-table th {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--bdf-muted);
  background: color-mix(in srgb, var(--bdf-paper) 45%, transparent);
}
.bdf-table th:first-child,
.bdf-table td:first-child { text-align: left; }
.bdf-table td { font-family: var(--bdf-mono); color: var(--bdf-ink-2); }
.bdf-table td:first-child { font-family: inherit; color: var(--bdf-ink); }
.bdf-table tr:last-child td { border-bottom: 0; }
.bdf-table tr.cur td { background: color-mix(in srgb, var(--bdf-seal) 7%, transparent); }
.bdf-table tr.cur td:first-child { font-weight: 700; color: var(--bdf-seal); }
.bdf-table td.hi { color: var(--bdf-forest); font-weight: 700; }
.bdf-table tfoot td {
  border-top: 1.5px solid var(--bdf-line-2);
  background: color-mix(in srgb, var(--bdf-paper) 55%, transparent);
  font-weight: 700;
  color: var(--bdf-ink);
}
.bdf-table tr.bdf-empty td {
  padding: 26px 12px;
  text-align: center;
  font-family: inherit;
  font-size: 12px;
  color: var(--bdf-muted);
  background: none;
}

/* ---------- 批量 ---------- */
.bdf-textarea {
  width: 100%;
  min-height: 168px;
  box-sizing: border-box;
  resize: vertical;
  border: 1px solid var(--bdf-line);
  border-radius: 7px;
  background: color-mix(in srgb, var(--bdf-paper) 55%, var(--bdf-panel));
  color: var(--bdf-ink);
  font-family: var(--bdf-mono);
  font-size: 12.5px;
  line-height: 1.75;
  padding: 12px 14px;
  outline: none;
  transition: border-color .16s ease;
}
.bdf-textarea:focus { border-color: var(--bdf-brass); }
.bdf-textarea::placeholder { color: var(--bdf-muted); }
.bdf-batch-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 12px 0 4px;
}
.bdf-batch-count {
  margin-left: auto;
  font-family: var(--bdf-mono);
  font-size: 11.5px;
  color: var(--bdf-muted);
}
.bdf-batch-err {
  display: none;
  margin: 8px 0 0;
  padding: 9px 12px;
  border-radius: 6px;
  border: 1px solid color-mix(in srgb, var(--bdf-bad) 40%, transparent);
  background: color-mix(in srgb, var(--bdf-bad) 8%, transparent);
  color: var(--bdf-bad);
  font-size: 12px;
  line-height: 1.7;
}
.bdf-batch-err.on { display: block; }

/* ---------- AI ---------- */
.bdf-ai {
  position: relative;
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  margin-top: 34px;
  padding: 20px 22px;
  border: 1px solid var(--bdf-line-2);
  border-radius: 10px;
  background:
    radial-gradient(420px 180px at 100% 0%, rgba(191, 59, 43, .07), transparent 70%),
    var(--bdf-card);
  box-shadow: var(--bdf-shadow-sm);
  overflow: hidden;
}
.bdf-ai-stamp {
  width: 62px;
  height: 62px;
  border: 2px solid var(--bdf-seal);
  border-radius: 50%;
  display: grid;
  place-content: center;
  font-family: var(--bdf-serif);
  font-size: 20px;
  letter-spacing: .04em;
  color: var(--bdf-seal);
  transform: rotate(-8deg);
  opacity: .8;
}
.bdf-ai h3 {
  margin: 0 0 4px;
  font-family: var(--bdf-serif);
  font-size: 18px;
  letter-spacing: .02em;
}
.bdf-ai p {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--bdf-muted);
}
.bdf-ai-btn {
  font-size: 12.5px;
  font-weight: 700;
  line-height: 1;
  padding: 12px 18px;
  border-radius: 5px;
  border: 1px solid var(--bdf-seal);
  background: var(--bdf-seal);
  color: #fff8f2;
  cursor: pointer;
  white-space: nowrap;
  transition: all .16s ease;
}
.bdf-ai-btn:hover { filter: brightness(1.07); }
.bdf-ai-btn:disabled { opacity: .55; cursor: default; }
.bdf-ai-status {
  grid-column: 2 / 4;
  display: none;
  margin-top: -4px;
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--bdf-ink-2);
  white-space: pre-wrap;
}
.bdf-ai-status.on { display: block; }
.bdf-ai-status.err { color: var(--bdf-bad); }

/* ---------- 说明 ---------- */
.bdf-docs {
  margin-top: 38px;
  padding-top: 24px;
  border-top: 1px solid var(--bdf-line);
}
.bdf-docs-head { margin-bottom: 18px; }
.bdf-docs-head h2 {
  margin: 0 0 6px;
  font-family: var(--bdf-serif);
  font-size: 24px;
  letter-spacing: .02em;
}
.bdf-docs-head p { margin: 0; font-size: 13.5px; color: var(--bdf-muted); }
.bdf-doc-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.bdf-doc {
  border: 1px solid var(--bdf-line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--bdf-panel) 88%, transparent);
  padding: 18px 20px;
}
.bdf-doc.wide { grid-column: 1 / -1; }
.bdf-doc h3 {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0 0 10px;
  font-family: var(--bdf-serif);
  font-size: 16.5px;
  letter-spacing: .02em;
}
.bdf-doc h3 i {
  font-style: normal;
  font-family: var(--bdf-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--bdf-brass);
  border: 1px solid color-mix(in srgb, var(--bdf-brass) 35%, transparent);
  border-radius: 3px;
  padding: 2px 5px;
}
.bdf-doc p {
  margin: 0 0 10px;
  font-size: 13px;
  line-height: 1.95;
  color: var(--bdf-ink-2);
}
.bdf-doc p:last-child { margin-bottom: 0; }
.bdf-doc b { color: var(--bdf-ink); font-weight: 700; }
.bdf-doc ul { margin: 8px 0 0; padding-left: 18px; }
.bdf-doc li {
  font-size: 13px;
  line-height: 1.9;
  color: var(--bdf-ink-2);
  margin-bottom: 4px;
}
.bdf-formula {
  margin: 10px 0;
  padding: 11px 13px;
  border-radius: 6px;
  border: 1px dashed var(--bdf-line-2);
  background: color-mix(in srgb, var(--bdf-paper) 60%, transparent);
  font-family: var(--bdf-mono);
  font-size: 11.5px;
  line-height: 1.9;
  color: var(--bdf-ink-2);
  white-space: pre-wrap;
  overflow-x: auto;
}
.bdf-faq { margin-top: 4px; }
.bdf-faq details {
  border-top: 1px dashed var(--bdf-line);
  padding: 10px 0;
}
.bdf-faq details:first-child { border-top: 0; padding-top: 0; }
.bdf-faq summary {
  cursor: pointer;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--bdf-ink);
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.bdf-faq summary::-webkit-details-marker { display: none; }
.bdf-faq summary::after {
  content: "+";
  font-family: var(--bdf-mono);
  color: var(--bdf-brass);
  font-size: 16px;
  line-height: 1;
}
.bdf-faq details[open] summary::after { content: "−"; }
.bdf-faq p {
  margin: 7px 0 0;
  font-size: 12.5px;
  line-height: 1.95;
  color: var(--bdf-muted);
  padding-left: 2px;
}
.bdf-disclaimer {
  margin: 18px 0 0;
  padding: 12px 14px;
  border-left: 3px solid var(--bdf-line-2);
  font-size: 11.5px;
  line-height: 1.9;
  color: var(--bdf-muted);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .bdf-board { grid-template-columns: minmax(0, 1fr); }
  .bdf-hero { grid-template-columns: minmax(0, 1fr) 260px; gap: 24px; }
  .bdf-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
  .bdf-hero { grid-template-columns: minmax(0, 1fr); }
  .bdf-hero-bill { display: none; }
  .bdf-compare { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .bdf-vs { padding: 2px 0; }
  .bdf-doc-grid { grid-template-columns: minmax(0, 1fr); }
  .bdf-ai {
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 14px;
  }
  .bdf-ai-stamp { width: 52px; height: 52px; font-size: 17px; }
  .bdf-ai-btn { grid-column: 1 / -1; justify-self: start; }
  .bdf-ai-status { grid-column: 1 / -1; }
}
@media (max-width: 620px) {
  .bdf-wrap { padding: 10px 14px 0; }
  .bdf-hero h1 { font-size: 27px; }
  .bdf-sub { font-size: 13.5px; }
  .bdf-result { padding: 16px 15px 17px; }
  .bdf-sheet-top { padding: 14px 20px 12px; }
  .bdf-sheet-body { padding: 16px 20px 14px; }
  .bdf-sheet-foot { padding: 11px 20px; }
  .bdf-metrics { grid-template-columns: minmax(0, 1fr); }
  .bdf-plan-inputs { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .bdf-card { padding: 15px 14px; }
  .bdf-ai { padding: 16px 16px; }
  .bdf-sec-head h2 { font-size: 19px; }
}
@media (max-width: 400px) {
  .bdf-hero-tags span { font-size: 11px; padding: 6px 9px; }
  .bdf-net b { font-size: 31px; }
  .bdf-plan-inputs { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .bdf-sheet-serial { display: none; }
  .bdf-watermark { display: none; }
}

@media print {
  .bdf-page { background: #fff; }
  .bdf-actions, .bdf-ai, .bdf-batch-bar, .bdf-faq, .bdf-crumb { display: none !important; }
  .bdf-card, .bdf-result, .bdf-sheet, .bdf-plan { box-shadow: none; }
}