html {
  font-size: clamp(14px, 1vw, 18px);
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  width: 100%;
  overflow-x: hidden;
  font-family: "Microsoft YaHei";
  color: #000;
  background-color: #b3b3b3;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;

}

*,
*::before,
*::after {
  box-sizing: border-box;
}

/* Modern Sticky Header */
.main-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 720px;
  margin: 0 auto;
  padding: 0.12rem 0.12rem;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.header-logo img {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 0.15rem;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.header-logo span {
  font-size: 0.26rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: linear-gradient(135deg, #d4af37 0%, #aa8222 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-btn {
  display: flex;
  align-items: center;
}

.header-download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.1rem 0.25rem;
  background: linear-gradient(to bottom, #00c6ff 0%, #0072ff 100%);
  color: #fff;
  font-size: 0.22rem;
  font-weight: 600;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 0.5rem;
  box-shadow: 0 4px 15px rgba(0, 114, 255, 0.4), inset 0 2px 4px rgba(255, 255, 255, 0.3);
  border: 1.5px solid #ffffff;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  white-space: nowrap;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.header-download-btn:active {
  transform: scale(0.95);
  box-shadow: 0 2px 5px rgba(0, 114, 255, 0.4);
}



@media (max-width: 720px) {
  .main-header {
    flex-wrap: wrap;
    align-items: center;
    padding: 0.12rem 0.5rem;
  }


}

@media (max-width: 480px) {
  .main-header {
    padding: 0.12rem 0.4rem;
    height: 60px
  }


}

.container {
  position: relative;
  width: 100%;
  background-color: #ffffff;
  max-width: 720px;
  min-height: 100vh;
  margin: 0 auto;
  z-index: 0;
}



.downBtn {
  /* absolute positioned button on banner */
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translateX(-50%);
  width: 4.6rem;
  height: 1rem;
  cursor: pointer;
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(to bottom, #00c6ff 0%, #0072ff 100%);
  border-radius: 1rem;
  box-shadow: 0 8px 32px rgba(0, 114, 255, 0.5), inset 0 3px 6px rgba(255, 255, 255, 0.4);
  border: 3px solid #ffffff;
  animation: pulse-center 2s infinite ease-in-out;
}

@media (min-width: 720px) {
  .downBtn {
    width: 4rem;
    height: 0.75rem;
    top: 10.8%;
  }
}

@media (max-width: 480px) {
  .downBtn {
    width: 4rem;
    height: 0.75rem;
    top: 8%;
  }
}

.downBtn a {
  display: flex;
  width: 100%;
  height: 100%;
  justify-content: center;
  align-items: center;
  color: #ffffff;
  font-size: 0.35rem;
  font-weight: 600;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 2px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}


.container .footer {
  position: relative;
  bottom: auto;
  right: auto;
  width: 100%;
  min-height: 1.5rem;
  color: #ffffff;
  background-color: #1a1a1a;
  padding: 0.4rem 0;
}

.footer p {
  padding: 0;
  margin: 0;
}

/* Content area styling */
.content {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  color: #333;
  line-height: 1.6;
}

.content h1 {
  font-size: clamp(32px, 6vw, 46px);
  color: #000000;
  margin: clamp(24px, 5vw, 50px) 0 clamp(24px, 5vw, 50px) 0;
  padding: 0 clamp(16px, 4vw, 40px);
  font-weight: bold;
  line-height: 1.3;
  letter-spacing: -0.5px;
}

.content h2 {
  font-size: clamp(24px, 4.5vw, 34px);
  color: #333;
  margin: clamp(30px, 6vw, 60px) 0 clamp(16px, 3vw, 30px) 0;
  padding: 0 clamp(16px, 4vw, 40px);
  font-weight: bold;
  line-height: 1.4;
}

.content h3 {
  font-size: clamp(20px, 3.5vw, 24px);
  color: #333;
  margin: clamp(10px, 6vw, 20px) 0 clamp(10px, 3vw, 10px) 0;
  padding: 0 clamp(16px, 4vw, 40px);
  font-weight: bold;
  line-height: 1.4;
}

.content p {
  font-size: clamp(16px, 3.5vw, 22px);
  color: #555;
  margin: 0 0 clamp(20px, 4vw, 40px) 0;
  padding: 0 clamp(16px, 4vw, 40px);
  line-height: 1.7;
  text-align: left;
}

.content ul,
.content ol {
  padding-left: clamp(40px, 8vw, 90px);
  padding-right: clamp(16px, 4vw, 40px);
  margin: 0 0 clamp(20px, 4vw, 40px) 0;
}

.content li {
  font-size: clamp(16px, 3.5vw, 22px);
  color: #555;
  margin-bottom: clamp(10px, 2vw, 20px);
  line-height: 1.7;
}

.content strong {
  color: #000000;
  font-weight: bold;
}

.table-container {
  margin: 16px 16px;
  overflow-x: auto;
}

.game-table {
  width: 100%;
  border-collapse: collapse;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  font-size: clamp(14px, 3.5vw, 18px);
  line-height: 1.5;
}

.game-table thead {
  background-color: #0f5e67;
}

.game-table th {
  padding: 12px 10px;
  font-size: clamp(14px, 3.5vw, 18px);
  font-weight: 600;
  color: #ffffff;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.game-table tbody tr {
  background-color: #ffffff;
  border-bottom: 1px solid #f0f0f0;
}

.game-table tbody tr:nth-child(even) {
  background-color: #f8f8f8;
}

.game-table td {
  padding: 12px 10px;
  font-size: clamp(14px, 3.5vw, 18px);
  color: #333333;
  text-align: center;
}

.game-table td:first-child {
  font-weight: 500;
  color: #000000;
}

.game-table td:last-child {
  color: #555555;
}


/* Footer styling */
.footer {
  position: relative;
  background-color: #1a1a1a;
  padding: 0.4rem 0.5rem;
  text-align: center;
  width: 100%;
}

.footer p {
  color: #fff;
  font-size: 0.24rem;
  margin-bottom: 0;
}



@keyframes pulse-center {
  0% {
    transform: translateX(-50%) scale(1);
  }

  50% {
    transform: translateX(-50%) scale(1.05);
  }

  100% {
    transform: translateX(-50%) scale(1);
  }
}

/* Image Figure Styling */
.content figure {
  margin: 20px 20px 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: rgba(0, 0, 0, 0.03);
  padding: 15px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.content figure img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.content figure figcaption {
  margin-top: 12px;
  font-size: clamp(14px, 3vw, 16px);
  color: #666;
  font-style: italic;
  text-align: center;
}