:root {
  --bg: #faf8f5;
  --surface: #ffffff;
  --text: #2c2a28;
  --text-muted: #8a8478;
  --border: #e9e4dc;
  --accent: #af5b40;
  --danger: #b3483c;
  --radius: 10px;
  --max-width: 860px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* 页头 */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.site-logo {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.5px;
}
.site-logo:hover { text-decoration: none; color: var(--accent); }
.site-nav { display: flex; gap: 22px; }
.site-nav a { color: var(--text-muted); font-size: 14.5px; }
.site-nav a:hover { color: var(--accent); text-decoration: none; }

/* 主体 */
.site-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 24px 80px;
  min-height: 60vh;
}

/* 首页 hero */
.hero { text-align: center; padding: 32px 0 48px; }
.hero-avatar {
  width: 84px; height: 84px; border-radius: 50%;
  object-fit: cover; margin-bottom: 18px;
  border: 3px solid var(--surface);
  box-shadow: 0 0 0 1px var(--border);
}
.hero h1 { font-size: 26px; margin: 0 0 10px; font-weight: 600; }
.hero-sub { color: var(--text-muted); font-size: 15px; margin: 0; }

/* 通用分区 */
.section { margin-bottom: 48px; }
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 18px; flex-wrap: wrap; gap: 10px;
}
.section-head h1, .section-head h2 { margin: 0; font-weight: 600; }
.more-link { font-size: 14px; color: var(--text-muted); }
.more-link:hover { color: var(--accent); }

/* 日志列表 */
.diary-preview-list, .diary-list { list-style: none; margin: 0; padding: 0; }
.diary-preview-list li, .diary-item {
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}
.diary-preview-list a { display: flex; justify-content: space-between; gap: 16px; color: var(--text); }
.diary-preview-list a:hover, .diary-item-title:hover { text-decoration: none; color: var(--accent); }
.diary-title, .diary-item-title { font-weight: 500; }
.diary-item { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 8px; }
.diary-item-title { font-size: 16px; }
.diary-meta, .diary-item-meta { color: var(--text-muted); font-size: 13px; white-space: nowrap; }

/* 首页快捷卡片 */
.quick-links { display: flex; gap: 14px; flex-wrap: wrap; }
.quick-card {
  flex: 1; min-width: 140px; text-align: center;
  padding: 22px 16px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text); font-size: 14.5px;
}
.quick-card:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }

/* 日志详情 */
.diary-detail-head h1 { margin: 0 0 8px; font-size: 24px; }
.diary-detail-content { margin: 24px 0; white-space: pre-wrap; font-size: 15.5px; }
.diary-detail-actions { display: flex; gap: 14px; align-items: center; }

/* 表单 */
.site-form { display: flex; flex-direction: column; gap: 18px; max-width: 560px; }
.site-form label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--text-muted); }
.site-form input, .site-form textarea {
  font: inherit; padding: 10px 12px; border: 1px solid var(--border);
  border-radius: 8px; background: var(--surface); color: var(--text); resize: vertical;
}
.site-form input:focus, .site-form textarea:focus { outline: none; border-color: var(--accent); }
.form-actions { display: flex; gap: 14px; align-items: center; }
.form-error { color: var(--danger); font-size: 14px; margin-bottom: 12px; }

/* 按钮 */
.btn-primary, .btn-secondary, .btn-danger {
  display: inline-block; padding: 9px 20px; border-radius: 7px;
  font-size: 14px; border: 1px solid transparent; cursor: pointer;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #96492f; text-decoration: none; }
.btn-secondary { background: var(--surface); border-color: var(--border); color: var(--text); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.btn-danger { background: var(--surface); border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-text { color: var(--text-muted); font-size: 14px; align-self: center; }
.btn-text-danger { background: none; border: none; color: var(--text-muted); font-size: 13px; cursor: pointer; padding: 0; }
.btn-text-danger:hover { color: var(--danger); text-decoration: underline; }
.inline-form { display: inline; }

/* 留言板 */
.guestbook-form { margin-bottom: 36px; }
.guestbook-list { list-style: none; margin: 0; padding: 0; }
.guestbook-item { padding: 16px 0; border-bottom: 1px solid var(--border); }
.guestbook-item-head { display: flex; justify-content: space-between; margin-bottom: 6px; }
.guestbook-nickname { font-weight: 600; font-size: 14.5px; }
.guestbook-time { color: var(--text-muted); font-size: 12.5px; }
.guestbook-message { margin: 0 0 8px; font-size: 14.5px; }

/* 相册 */
.album-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 14px;
}
.album-item {
  margin: 0; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border); aspect-ratio: 1;
}
.album-item img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* 关于我 */
.about-card { display: flex; gap: 28px; align-items: flex-start; flex-wrap: wrap; }
.about-avatar { width: 120px; height: 120px; border-radius: 50%; object-fit: cover; border: 3px solid var(--surface); box-shadow: 0 0 0 1px var(--border); }
.about-text h2 { margin: 0 0 10px; }
.about-facts { padding-left: 18px; color: var(--text-muted); font-size: 14.5px; }

.empty-tip { color: var(--text-muted); font-size: 14.5px; }

/* 页脚 */
.site-footer {
  text-align: center; padding: 28px 24px; color: var(--text-muted);
  font-size: 13px; border-top: 1px solid var(--border);
}

@media (max-width: 600px) {
  .site-nav { gap: 14px; font-size: 13.5px; }
  .about-card { flex-direction: column; align-items: center; text-align: center; }
}