:root {
  color-scheme: light;
  --ink: #16212b;
  --muted: #637381;
  --line: #d8e0e5;
  --panel: #ffffff;
  --bg: #f3f6f5;
  --brand: #0b6b5b;
  --brand-2: #236092;
  --amber: #a86500;
  --red: #a73535;
  --green-soft: #e6f4ef;
  --blue-soft: #e8f1f8;
  --amber-soft: #fff4df;
  --red-soft: #fdecec;
  --shadow: 0 18px 44px rgba(17, 37, 52, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(230, 244, 239, 0.95), rgba(243, 246, 245, 0) 360px),
    var(--bg);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", "Segoe UI", Arial, sans-serif;
}

button,
select,
input {
  font: inherit;
}

.shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 30px 0 44px;
}

.hero {
  display: grid;
  grid-template-columns: 1fr minmax(260px, 340px);
  gap: 22px;
  align-items: end;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--brand);
  font-size: 14px;
  font-weight: 800;
}

h1,
h2,
p {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  max-width: 820px;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.08;
}

h2 {
  font-size: 20px;
}

.intro {
  max-width: 760px;
  margin-top: 12px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
}

.hero-card,
.panel,
.metric {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
}

.hero-card {
  display: grid;
  gap: 8px;
  padding: 18px;
}

.hero-card span,
.hero-card small,
.metric span,
.metric small,
label,
.section-title span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.hero-card strong {
  font-size: 20px;
  line-height: 1.35;
}

.workspace {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 16px;
  align-items: start;
}

.panel {
  padding: 18px;
}

.controls {
  position: sticky;
  top: 16px;
  display: grid;
  gap: 16px;
}

label {
  display: grid;
  gap: 8px;
}

select {
  width: 100%;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 12px;
  color: var(--ink);
  background: #fff;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--brand);
}

.range-row {
  display: grid;
  grid-template-columns: 1fr 54px;
  gap: 10px;
  align-items: center;
}

output {
  color: var(--brand);
  font-weight: 850;
  text-align: right;
}

.notice {
  padding: 12px;
  border-radius: 8px;
  color: #42515d;
  background: var(--blue-soft);
  font-size: 13px;
  line-height: 1.6;
}

.results {
  display: grid;
  gap: 16px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.metric {
  display: grid;
  gap: 8px;
  min-height: 124px;
  padding: 16px;
}

.metric strong {
  font-size: clamp(22px, 2.7vw, 34px);
  line-height: 1.1;
}

.section-title {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: center;
  margin-bottom: 14px;
}

.section-title span,
#planBadge {
  padding: 5px 9px;
  border-radius: 999px;
  color: var(--brand);
  background: var(--green-soft);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.summary-item {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfc;
}

.summary-item span {
  display: block;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.summary-item strong {
  display: block;
  font-size: 18px;
}

.scenario-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.scenario {
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.scenario.good {
  border-color: #9bcdbb;
  background: var(--green-soft);
}

.scenario.mid {
  border-color: #e1c078;
  background: var(--amber-soft);
}

.scenario.bad {
  border-color: #e5a0a0;
  background: var(--red-soft);
}

.scenario h3 {
  margin: 0;
  font-size: 17px;
}

.scenario strong {
  font-size: 22px;
}

.scenario p,
.risk-text {
  color: #42515d;
  font-size: 14px;
  line-height: 1.65;
}

.risk-text {
  display: grid;
  gap: 10px;
}

.risk-text p {
  margin: 0;
}

.risk-text .danger {
  color: var(--red);
  font-weight: 800;
}

@media (max-width: 920px) {
  .hero,
  .workspace,
  .metric-grid,
  .scenario-list,
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .controls {
    position: static;
  }
}

@media (max-width: 520px) {
  .shell {
    width: min(100% - 20px, 1180px);
    padding-top: 18px;
  }

  .panel,
  .hero-card,
  .metric {
    padding: 14px;
  }
}