:root {
  color-scheme: light;
  --bg: #eef4ff;
  --card: rgba(255, 255, 255, 0.93);
  --text: #0f172a;
  --muted: #64748b;
  --primary: #1d4ed8;
  --success: #0f766e;
  --border: #dbe5f4;
  --line: #bfdbfe;
  --shadow: 0 24px 80px rgba(15, 23, 42, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.22), transparent 34rem),
    radial-gradient(circle at bottom right, rgba(20, 184, 166, 0.24), transparent 32rem),
    linear-gradient(135deg, #eef4ff 0%, #f8fbff 52%, #e7fbf7 100%);
}

.shell {
  width: min(1040px, calc(100% - 32px));
  min-height: 100vh;
  margin: 0 auto;
  display: grid;
  align-content: center;
  gap: 22px;
  padding: 48px 0;
}

.card {
  border: 1px solid var(--border);
  border-radius: 28px;
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero {
  padding: 42px 38px;
}

.hero p {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--success);
  background: rgba(15, 118, 110, 0.12);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.02em;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1 {
  margin: 16px 0 12px;
  font-size: clamp(38px, 6vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.05em;
}

h2 {
  margin-bottom: 0;
  font-size: 28px;
  line-height: 1.2;
}

h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

h4 {
  margin-bottom: 10px;
  color: var(--primary);
  font-size: 15px;
}

.notice-card,
.flow-card {
  padding: 30px;
}

.section-title {
  margin-bottom: 24px;
}

.eyebrow {
  display: block;
  margin-bottom: 7px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.notice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.notice-grid article,
.timeline li {
  border: 1px solid var(--border);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.68);
}

.notice-grid article {
  padding: 20px;
}

.notice-grid p,
.timeline p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.72;
}

.timeline {
  position: relative;
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 26px;
  top: 18px;
  bottom: 18px;
  width: 2px;
  background: var(--line);
}

.timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 16px;
  padding: 18px;
}

.timeline details {
  width: 100%;
}

.timeline summary {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  cursor: pointer;
  list-style: none;
}

.timeline summary::-webkit-details-marker {
  display: none;
}

.timeline summary span {
  display: block;
  margin-bottom: 7px;
  font-size: 20px;
  font-weight: 900;
}

.timeline summary small {
  display: block;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.timeline summary::after {
  content: "查看详情";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 84px;
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--primary);
  background: rgba(37, 99, 235, 0.1);
  font-size: 13px;
  font-weight: 900;
}

.timeline details[open] summary::after {
  content: "收起";
  color: var(--success);
  background: rgba(15, 118, 110, 0.12);
}

.step-content {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.detail-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.detail-columns > div {
  padding: 16px;
  border-radius: 16px;
  background: rgba(239, 246, 255, 0.78);
}

.detail-columns ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.detail-columns li + li {
  margin-top: 6px;
}

.step-no {
  z-index: 1;
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 18px;
  color: white;
  background: linear-gradient(135deg, #2563eb, #14b8a6);
  font-weight: 900;
  box-shadow: 0 12px 26px rgba(37, 99, 235, 0.24);
}

@media (max-width: 840px) {
  .notice-grid,
  .detail-columns {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .shell {
    width: min(100% - 20px, 1040px);
    padding: 20px 0;
  }

  .hero,
  .notice-card,
  .flow-card {
    padding: 22px;
    border-radius: 22px;
  }

  .timeline li {
    grid-template-columns: 46px 1fr;
    padding: 14px;
  }

  .timeline summary {
    grid-template-columns: 1fr;
  }

  .step-no {
    width: 46px;
    height: 46px;
    border-radius: 15px;
  }
}