:root {
  --bg: #1f2430;
  --card: #ffffff;
  --text: #1f2430;
  --muted: #6b7280;
  --accent: #4f7cff;
  --accent-2: #7c5cff;
  --border: #e5e7eb;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

/* 全屏背景层：图片铺满整个屏幕，随内容滚动时保持固定 */
.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: url("background.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.container {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 头部 */
.hero {
  background: linear-gradient(135deg, rgba(79, 124, 255, 0.88), rgba(124, 92, 255, 0.88));
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  color: #fff;
  padding: 36px 0 32px;
  text-align: center;
}

.logo {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.logo span {
  font-weight: 400;
  opacity: 0.92;
}

/* 以下样式供 404 页使用 */
.tagline {
  margin-top: 8px;
  font-size: 1.05rem;
  opacity: 0.9;
}

.nav {
  margin-top: 24px;
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.nav a {
  color: #fff;
  text-decoration: none;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  transition: background 0.2s ease;
}

.nav a:hover {
  background: rgba(255, 255, 255, 0.32);
}

/* 主体 */
main.container {
  margin: 0 auto 0 max(40px, 5vw);
  padding: 40px 20px;
}

/* 卡片：半透明 + 毛玻璃，让背景透出且文字清晰 */
.card {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 14px;
  padding: 28px;
  margin-bottom: 24px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.card h2 {
  font-size: 1.35rem;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}

.card p {
  color: var(--muted);
}

/* 关于我：头像在左，右侧是名称 czytnl */
.about-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.avatar {
  width: 72px;
  height: 72px;
  flex: 0 0 72px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.about-info {
  flex: 1;
  min-width: 0;
}

.about-name {
  font-size: 1.5rem;
  line-height: 1.3;
  color: var(--text);
}

.about-desc {
  margin-top: 4px;
  color: var(--muted);
}

/* 动态列表 */
.post-list {
  list-style: none;
}

.post-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.post-list li:last-child {
  border-bottom: none;
}

.post-date {
  color: var(--accent);
  font-size: 0.85rem;
  margin-right: 10px;
}

/* 链接列表 */
.link-list {
  list-style: none;
}

.link-list li {
  margin: 8px 0;
}

.link-list a {
  color: var(--accent);
  text-decoration: none;
}

.link-list a:hover {
  text-decoration: underline;
}

/* 页脚：半透明深色条，保证在背景图上可读 */
.footer {
  background: rgba(31, 36, 48, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  color: rgba(255, 255, 255, 0.9);
  text-align: center;
  padding: 24px 20px 32px;
  font-size: 0.9rem;
}

@media (max-width: 600px) {
  .logo {
    font-size: 1.8rem;
  }
  .hero {
    padding: 28px 0 24px;
  }
}