:root {
  color-scheme: light;
  --bg: #f4f7f2;
  --card: #ffffff;
  --text: #233142;
  --muted: #6b7280;
  --accent: #2f9e44;
  --accent-soft: #ebf8ee;
  --border: #e5e7eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", Arial, sans-serif;
  background: linear-gradient(135deg, #f6fff8 0%, var(--bg) 100%);
  color: var(--text);
}

.page-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.hero {
  text-align: center;
  margin-bottom: 24px;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 8px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 8px;
  font-size: 2rem;
}

.hero-text {
  margin: 0 auto;
  max-width: 760px;
  color: var(--muted);
  line-height: 1.6;
}

.content-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr 1.1fr;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 12px 30px rgba(35, 49, 66, 0.08);
  padding: 24px;
}

form {
  display: grid;
  gap: 16px;
}

label,
fieldset {
  display: grid;
  gap: 8px;
  font-weight: 600;
}

select,
button {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  font-size: 1rem;
}

button {
  cursor: pointer;
  background: var(--accent);
  color: white;
  font-weight: 700;
  border: none;
}

button:hover {
  filter: brightness(1.05);
}

.checkbox-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.checkbox-grid label {
  font-weight: 500;
}

.summary-box {
  background: var(--accent-soft);
  border: 1px solid #cfead7;
  border-radius: 16px;
  padding: 16px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.plan-list {
  display: grid;
  gap: 12px;
}

.plan-item {
  padding: 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #fcfdfc;
}

.plan-item h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.plan-item p {
  margin: 4px 0;
  color: var(--muted);
}

.reason {
  margin-top: 8px;
  padding: 8px 10px;
  border-left: 3px solid var(--accent);
  background: #f8fdf9;
  border-radius: 8px;
  color: #35533a;
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .checkbox-grid {
    grid-template-columns: 1fr;
  }
}