* {
  margin: 0;
  padding: 0;
}

body {
  background: #f1f2f3;
}

.container {
  box-sizing: border-box;
  width: 100%;
  max-width: 1560px;
  min-width: 1240px;
  margin: 25px auto;
  color: #333;
}

.container * {
  box-sizing: border-box;
}

header {
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin-bottom: 25px;
}

header h1 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 10px;
}

header p {
  font-size: 16px;
  color: #7f8c8d;
  max-width: 95%;
  margin: 0 auto;
}

.search-box {
  display: flex;
  justify-content: center;
  margin-bottom: 25px;
}

.search-input {
  width: 60%;
  padding: 13px 20px;
  font-size: 16px;
  border: 2px solid #ddd;
  border-radius: 30px;
  outline: none;
  transition: all 0.3s;
}

.search-input:focus {
  border-color: #3498db;
  box-shadow: 0 0 8px rgba(52, 152, 219, 0.3);
}

.shortcuts-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin-bottom: 25px;
}

.shortcut-card {
  background-color: white;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s, box-shadow 0.3s;
}

.shortcut-card:hover {
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.shortcut-key {
  font-weight: bold;
  font-size: 17px;
  color: #e74c3c;
  margin-bottom: 10px;
}

.shortcut-function {
  color: #555;
  font-size: 13px;
  line-height: 1.5;
}

.info-box {
  padding: 20px;
  background: #fff;
  border-radius: 12px;
  margin-bottom: 25px;
  line-height: 1.75;
  font-size: 15px;
}

.footer-info h2{
  font-size: 20px;
  margin-bottom: 15px;
  color: #2c3e50;
}

footer{
  font-size: 14px;
  text-align: center;
  opacity: 0.8;
}

.notice {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 10px 20px;
  border-radius: 5px;
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 1000;
}

.notice.show {
  opacity: 1;
}

.no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px;
  font-size: 18px;
  color: #666;
}

@media (max-width: 1399px) {
  .container {
      padding: 20px 40px;
  }
}