/* ========== 全局样式 ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --dynamic-text-color: #fff;
}

body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg) no-repeat center center/cover;
  color: var(--dynamic-text-color);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  user-select: none; /* 禁止文字复制 */
}

/* 链接取消默认颜色 */
a {
  color: inherit;
  text-decoration: none;
  user-select: none; /* 禁止文字复制 */
}

/* 公共玻璃效果类 */
.glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(8px) saturate(180%) brightness(1.1) contrast(1.05);
  -webkit-backdrop-filter: blur(8px) saturate(180%) brightness(1.1) contrast(1.05);
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* ========== 主内容 ========== */
main {
  flex: 1;
  padding: 30px 20px;
  text-align: center;
}

/* 标题 */
h1 {
  display: block;
  font-size: 2.2rem;
  line-height: 1.3;
  margin: 0 auto 20px auto; /* 标题到截图区域间距调整 */
  padding: 8px 16px;
  border-radius: 12px;
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(8px) saturate(180%) brightness(1.1) contrast(1.05);
  -webkit-backdrop-filter: blur(8px) saturate(180%) brightness(1.1) contrast(1.05);
  text-align: center;
  width: fit-content;
}

.subtitle {
  display: block;
  font-size: 1.2rem;
  margin: 0 auto 20px auto;
  padding: 4px 12px;
  border-radius: 8px;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(8px) saturate(180%) brightness(1.1) contrast(1.05);
  -webkit-backdrop-filter: blur(8px) saturate(180%) brightness(1.1) contrast(1.05);
  text-align: center;
  width: fit-content;
}

/* 截图 */
.screenshot-section {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.screenshot-item {
  max-width: 280px;
  padding: 8px;
}

.screenshot {
  width: 100%;
  border-radius: 10px;
  display: block;
  transition: transform 0.3s ease; /* 鼠标悬停放大 */
}

.screenshot:hover {
  transform: scale(1.05);
}

/* 按钮 */
.button-group {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 30px;
}

.btn {
  color: var(--dynamic-text-color);
  padding: 10px 20px;
  border-radius: 8px;
  text-decoration: none;
  transition: transform 0.2s ease;
  font-weight: bold;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(8px) saturate(180%) brightness(1.1) contrast(1.05);
  -webkit-backdrop-filter: blur(8px) saturate(180%) brightness(1.1) contrast(1.05);
  user-select: none; /* 禁止复制 */
}

.btn:hover {
  transform: scale(1.05);
}

.description-section {
    margin-top: 20px;
    text-align: center;
}

.toggle-btn {
    border: none;
    color: var(--dynamic-text-color, #fff);
    padding: 8px 16px;
    cursor: pointer;
    font-size: 1rem;

    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(6px) saturate(180%) brightness(1.05) contrast(1.05);
    -webkit-backdrop-filter: blur(6px) saturate(180%) brightness(1.05) contrast(1.05);
    border-radius: 10px;
}

#descriptionContent {
    margin-top: 15px;
    padding: 12px 18px;
    border-radius: 10px;
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(6px) saturate(180%) brightness(1.05) contrast(1.05);
    -webkit-backdrop-filter: blur(6px) saturate(180%) brightness(1.05) contrast(1.05);
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.collapsed {
    display: none;
}

/* ========== 浮动图标 ========== */
.floating-icons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 20px 0;
}

.icon-img {
  width: 60px;
  height: 60px;
  border-radius: 15px;
  padding: 6px;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(8px) saturate(180%) brightness(1.05);
  -webkit-backdrop-filter: blur(18px) saturate(180%) brightness(1.05);
  transition: transform 0.3s ease;
  user-select: none;
}

.icon-wrapper:first-child .icon-img:hover {
  transform: scale(1.1) rotate(-10deg);
}
.icon-wrapper:last-child .icon-img:hover {
  transform: scale(1.1) rotate(10deg);
}

/* ========== 底部 ========== */
.footer {
  text-align: center;
  padding: 10px 0;
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.footer-text {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(8px) saturate(180%) brightness(1.05) contrast(1.05);
  -webkit-backdrop-filter: blur(6px) saturate(180%) brightness(1.05) contrast(1.05);
  user-select: none;
}

/* ------------------ 响应式 ------------------ */
@media (max-width:480px){
  .screenshot-item { max-width: 200px; }
  .btn, .toggle-btn { font-size: 0.9rem; padding: 8px 12px; }
  .icon-img { width: 36px; height: 36px; }
}