* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: #f5f6f8;
  min-height: 100vh;
  color: #333;
  font-size: 15px;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 24px 18px 36px;
}

/* ========== Header ========== */
.header {
  padding: 24px 0 28px;
}
.header .back {
  display: inline-block;
  color: #888;
  text-decoration: none;
  font-size: 15px;
  margin-bottom: 12px;
}
.header .back:hover { color: #555; }
.header h1 {
  font-size: 28px;
  font-weight: 700;
  color: #1a1a2e;
}
.header p {
  font-size: 15px;
  color: #888;
  margin-top: 4px;
}

/* ========== Cards ========== */
.cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 36px;
}

.card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: #fff;
  border-radius: 10px;
  padding: 20px 22px;
  text-decoration: none;
  color: #333;
  transition: box-shadow 0.2s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.card:hover {
  box-shadow: 0 2px 12px rgba(0,0,0,0.10);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: #f5f6f8;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.card-body { flex: 1; min-width: 0; }
.card-body h2 {
  font-size: 18px;
  font-weight: 600;
  color: #1a1a2e;
  margin-bottom: 3px;
}
.card-body p {
  font-size: 14px;
  color: #888;
}

.arrow {
  font-size: 18px;
  color: #ccc;
  flex-shrink: 0;
}

/* ========== Footer ========== */
.footer {
  text-align: center;
  font-size: 13px;
  color: #bbb;
}
.footer a { color: #bbb; text-decoration: none; }
.footer a:hover { color: #888; }

/* ========== Mobile ========== */
@media (max-width: 640px) {
  .container { padding: 16px 14px 28px; }
  .header { padding: 16px 0 22px; }
  .header h1 { font-size: 24px; }
  .card { padding: 18px 18px; }
  .card-icon { width: 42px; height: 42px; border-radius: 7px; }
  .card-body h2 { font-size: 17px; }
  .card-body p { font-size: 14px; }
}