:root {
  --bg: #f7f8fa;
  --panel: #ffffff;
  --ink: #1a2233;
  --ink-soft: #4a5468;
  --ink-mute: #7a8497;
  --line: #e4e8ef;
  --brand: #1f5fae;
  --brand-soft: #e8f0fb;
  --ok: #2f8a3e;
  --warn: #c2820a;
  --bad: #b53531;
  --shadow: 0 1px 2px rgba(20, 30, 50, 0.04), 0 4px 16px rgba(20, 30, 50, 0.06);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.6;
}

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

.hero { margin-bottom: 24px; }
.brand {
  display: inline-block;
  font-size: 13px;
  color: var(--brand);
  background: var(--brand-soft);
  padding: 4px 10px;
  border-radius: 12px;
  margin-bottom: 12px;
}
h1 {
  font-size: 26px;
  margin: 0 0 8px;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.lede {
  color: var(--ink-soft);
  margin: 0;
}

section {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  margin-top: 20px;
  box-shadow: var(--shadow);
}

h2 {
  font-size: 18px;
  margin: 0 0 16px;
  color: var(--ink);
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 18px;
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
}

.field { display: flex; flex-direction: column; gap: 4px; }
.label {
  font-size: 13px;
  color: var(--ink-soft);
  font-weight: 500;
}
input[type=number], input[type=text], textarea {
  font: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  outline: none;
  transition: border-color 0.15s;
}
input:focus, textarea:focus { border-color: var(--brand); }
.hint {
  font-size: 12px;
  color: var(--ink-mute);
}

.actions {
  margin-top: 18px;
  display: flex;
  gap: 10px;
}
.btn-primary, .btn-secondary {
  font: inherit;
  padding: 9px 18px;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.15s, border-color 0.15s;
}
.btn-primary {
  background: var(--brand);
  color: #fff;
}
.btn-primary:hover { background: #18488a; }
.btn-secondary {
  background: #fff;
  color: var(--ink-soft);
  border-color: var(--line);
}
.btn-secondary:hover { border-color: var(--ink-mute); }

.hidden { display: none !important; }

/* ===== Hero stats:三个关键数字大屏 ===== */
.hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 14px;
  margin: 4px 0 22px;
}
@media (max-width: 720px) {
  .hero-stats { grid-template-columns: 1fr; }
}
.hero-stat {
  border-radius: 12px;
  padding: 20px 22px;
  background: linear-gradient(135deg, #f4f9ff 0%, #eaf2fc 100%);
  border: 1px solid #d8e6f6;
  position: relative;
  overflow: hidden;
}
.hero-stat-blue::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--brand);
}
.hero-stat-risk::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: #c2820a;
}
.hero-stat-label {
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 8px;
  font-weight: 500;
}
.hero-stat-value {
  font-size: 42px;
  font-weight: 700;
  color: var(--brand);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 4px 0 8px;
  font-variant-numeric: tabular-nums;
}
.hero-stat-unit {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-soft);
  margin-left: 6px;
  letter-spacing: 0;
}
.hero-stat-sub {
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 4px;
  line-height: 1.5;
}
.hero-stat-sub .arrow {
  color: var(--ink-mute);
  margin: 0 4px;
}

/* 风险等级大字 */
.risk-big {
  display: inline-block;
  font-size: 38px;
  font-weight: 700;
  padding: 0;
  line-height: 1.1;
  background: transparent;
  letter-spacing: 0;
}
.risk-big.risk-low  { color: var(--ok); }
.risk-big.risk-mid  { color: var(--warn); }
.risk-big.risk-high { color: var(--bad); }

/* ===== 对比条:人工 vs LP200 ===== */
.compare-block {
  background: #fafbfd;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px;
  margin-bottom: 18px;
}
.compare-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 12px;
}
.compare-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
@media (max-width: 560px) {
  .compare-row { grid-template-columns: 100px 1fr; }
}
.compare-label {
  font-size: 13px;
  color: var(--ink);
  font-weight: 500;
}
.compare-label small {
  font-weight: 400;
  color: var(--ink-mute);
  font-size: 11px;
}
.compare-track {
  position: relative;
  height: 32px;
  background: #eef2f8;
  border-radius: 6px;
  overflow: hidden;
}
.compare-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  border-radius: 6px;
  transition: width 0.6s cubic-bezier(.22, 1, .36, 1);
  width: 0%;
}
.compare-fill-human {
  background: linear-gradient(90deg, #c8d3e3 0%, #a8b8cf 100%);
}
.compare-fill-lp200 {
  background: linear-gradient(90deg, #2e86c1 0%, #1f5fae 100%);
}
.compare-value {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  right: 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  z-index: 2;
  text-shadow: 0 0 4px rgba(255,255,255,0.6);
}
.compare-summary {
  margin-top: 12px;
  padding: 10px 14px;
  background: #e3f4e6;
  border-left: 3px solid var(--ok);
  border-radius: 6px;
  font-size: 14px;
  color: var(--ok);
  font-weight: 600;
}

/* ===== CTA 桥接:从看到数字 → 留资 ===== */
.cta-bridge {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 18px 0 8px;
  padding: 18px 22px;
  background: linear-gradient(135deg, var(--brand) 0%, #1849a0 100%);
  border-radius: 12px;
  color: #fff;
  box-shadow: 0 2px 12px rgba(31, 95, 174, 0.18);
}
@media (max-width: 560px) {
  .cta-bridge { flex-direction: column; align-items: stretch; text-align: center; }
}
.cta-bridge-text {
  font-size: 14px;
  line-height: 1.5;
  color: #eaf2fc;
}
.cta-bridge-text strong {
  color: #fff;
  font-size: 16px;
}
.cta-bridge-btn {
  flex-shrink: 0;
  display: inline-block;
  padding: 11px 22px;
  background: #fff;
  color: var(--brand);
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: transform 0.15s, box-shadow 0.15s;
  white-space: nowrap;
}
.cta-bridge-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 600;
}
.badge.inline { font-size: 12px; padding: 1px 8px; }
.badge-low  { background: #e3f4e6; color: var(--ok); }
.badge-mid  { background: #fff1d6; color: var(--warn); }
.badge-high { background: #fbe2e1; color: var(--bad); }

.honest-note {
  margin: 4px 0 16px;
  padding: 12px 14px;
  border-left: 3px solid var(--warn);
  background: #fff8e9;
  border-radius: 6px;
  font-size: 14px;
  color: var(--ink-soft);
}
.honest-note em { font-style: normal; color: var(--ink); font-weight: 600; }

.assumptions {
  margin-top: 8px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}
.assumptions summary {
  cursor: pointer;
  color: var(--brand);
  font-size: 14px;
  font-weight: 500;
}
.assumptions ul { padding-left: 20px; color: var(--ink-soft); }
.assumptions ul ul { margin-top: 4px; }
.assumptions em { font-style: normal; color: var(--ink); font-weight: 600; }
.disclaimer {
  margin-top: 12px;
  font-size: 12px;
  color: var(--ink-mute);
  font-style: italic;
}

.lead .privacy {
  font-size: 12px;
  color: var(--ink-mute);
  margin: 6px 0 0;
}
.lead .field { margin-bottom: 12px; }
.lead-thanks {
  padding: 14px;
  background: var(--brand-soft);
  border-radius: 8px;
  color: var(--ink);
}

.footer {
  margin-top: 32px;
  text-align: center;
  font-size: 12px;
  color: var(--ink-mute);
  background: transparent;
  border: 0;
  box-shadow: none;
  padding: 0;
}