/* ===== 样式完全不变，仅保留关键部分 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', 'Segoe UI', Roboto, system-ui, sans-serif;
}

:root {
  --bg-start: #e9efff;
  --bg-mid: #d9e2fa;
  --bg-end: #cbd5f0;
  --card-bg: rgba(255, 255, 255, 0.25);
  --card-border: rgba(255, 255, 255, 0.5);
  --card-shadow: rgba(140, 160, 220, 0.15);
  --btn-bg: rgba(255, 255, 255, 0.3);
  --btn-border: rgba(255, 255, 255, 0.5);
  --btn-color: #3a4a62;
  --btn-shadow: rgba(120, 140, 200, 0.2);
  --footer-border: rgba(255, 255, 255, 0.3);
}

body.theme-dark {
  --bg-start: #1f2336;
  --bg-mid: #2b2f44;
  --bg-end: #1e2232;
  --card-bg: rgba(25, 30, 45, 0.4);
  --card-border: rgba(255, 255, 255, 0.1);
  --card-shadow: rgba(0, 0, 0, 0.4);
  --btn-bg: rgba(25, 30, 45, 0.5);
  --btn-border: rgba(255, 255, 255, 0.15);
  --btn-color: #dfe7ff;
  --btn-shadow: rgba(0, 0, 0, 0.4);
  --footer-border: rgba(255, 255, 255, 0.1);
}

body {
  min-height: 100vh;
  background: linear-gradient(145deg, var(--bg-start), var(--bg-mid), var(--bg-end));
  color: #2d3a4f;
  transition: background 0.3s, color 0.3s;
}

body.theme-dark {
  color: #e2e6f0;
}

.wrapper {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0.6rem 1.2rem 1.2rem; /* 缩小外层内边距 */
  position: relative;
  z-index: 2;
}

.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4rem 0 0.6rem; /* 缩小顶部内边距 */
  flex-wrap: wrap;
  gap: 0.8rem;
}

.logo img {
  height: 42px; /* 原48px */
  width: auto;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.05));
}

.action-buttons {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  position: relative;
}

.theme-toggle button,
.palette-toggle button {
  width: 46px; /* 原52px */
  height: 46px;
  border-radius: 30px;
  background: var(--btn-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--btn-border);
  font-size: 1.6rem; /* 原1.8rem */
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--btn-color);
  box-shadow: 0 8px 20px var(--btn-shadow);
  transition: 0.2s;
}

.palette-panel {
  position: absolute;
  top: 52px; /* 原60px，跟随按钮位置 */
  right: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: 30px; /* 原36px */
  padding: 1rem 1rem; /* 原1.2rem */
  box-shadow: 0 20px 35px rgba(0,0,0,0.15);
  display: flex;
  flex-direction: column;
  gap: 0.8rem; /* 原1rem */
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: 0.2s;
  min-width: 240px; /* 原260px */
}

.palette-panel.show {
  opacity: 1;
  visibility: visible;
}

body.theme-dark .palette-panel {
  background: rgba(30, 35, 50, 0.9);
  border-color: rgba(255,255,255,0.15);
}

.color-options {
  display: flex;
  justify-content: space-around;
  gap: 0.4rem;
}

.color-dot {
  width: 36px; /* 原40px */
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid rgba(255,255,255,0.7);
  background: #ccc;
}

.color-dot.default { background: linear-gradient(145deg, #e9efff, #d9e2fa, #cbd5f0); }
.color-dot.green { background: linear-gradient(145deg, #e2f0e9, #d0e6d9, #bfdbc9); }
.color-dot.orange { background: linear-gradient(145deg, #ffefe0, #ffe2cc, #ffd4b8); }
.color-dot.pink { background: linear-gradient(145deg, #fee9f0, #fad4e2, #f5c0d4); }

.custom-color {
  display: flex;
  align-items: center;
  gap: 0.6rem; /* 原0.8rem */
}

.color-preview {
  width: 36px; /* 原40px */
  height: 36px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.7);
  background: #e9efff;
}

.hue-slider {
  flex: 1;
  height: 6px; /* 原8px */
  border-radius: 10px;
  background: linear-gradient(to right, #ff0000, #ffff00, #00ff00, #00ffff, #0000ff, #ff00ff, #ff0000);
  -webkit-appearance: none;
  appearance: none;
}

.hue-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; /* 原20px */
  height: 18px;
  border-radius: 50%;
  background: white;
  border: 2px solid #3a4a62;
  cursor: pointer;
}

.reset-btn {
  background: rgba(255,255,255,0.3);
  border: 1px solid rgba(255,255,255,0.5);
  border-radius: 30px; /* 原40px */
  padding: 0.4rem 0.8rem; /* 原0.5rem 1rem */
  cursor: pointer;
  text-align: center;
  color: #2d3a4f;
  font-weight: 500;
  font-size: 0.9rem;
}

body.theme-dark .reset-btn {
  background: rgba(255,255,255,0.1);
  color: #dfe7ff;
}

.profile-card {
  display: flex;
  align-items: center;
  gap: 1.5rem; /* 原2rem */
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: 40px; /* 原48px */
  padding: 0.8rem 1.5rem 0.8rem 1.2rem; /* 原1rem 2rem 1rem 1.5rem */
  margin: 0.8rem 0 1.5rem; /* 原1rem 0 2rem */
  box-shadow: 0 20px 40px var(--card-shadow);
}

.avatar img {
  width: 86px; /* 原96px */
  height: 86px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(255,255,255,0.7);
}

.profile-text .name {
  font-size: 2rem; /* 原2.2rem */
  font-weight: 600;
}

.profile-text .motto {
  font-size: 1.1rem; /* 原1.2rem */
  opacity: 0.9;
  font-style: italic;
  margin-top: 0.2rem;
}

.section-title {
  font-size: 1.5rem; /* 原1.9rem */
  font-weight: 500;
  margin: 1.4rem 0 0.8rem 0.3rem; /* 原1.8rem 0 1rem 0.3rem */
  display: inline-block;
  padding: 0.2rem 1.2rem 0.2rem 0.8rem; /* 原0.2rem 1.5rem 0.2rem 1rem */
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border-radius: 30px; /* 原40px */
  border: 1px solid var(--card-border);
}

.sites-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); /* 原240px */
  gap: 1rem; /* 原1.2rem */
}

.site-card {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: 28px; /* 原32px */
  padding: 1rem 0.9rem; /* 原1.2rem 1rem */
  transition: 0.25s;
  box-shadow: 0 10px 20px var(--card-shadow);
}

.site-card:hover {
  transform: translateY(-6px);
  background: rgba(255,255,255,0.3);
}

.site-name {
  font-size: 1.2rem; /* 原1.3rem */
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.site-desc {
  font-size: 0.85rem; /* 原0.9rem */
  opacity: 0.8;
}

.site-card a {
  text-decoration: none;
  color: inherit;
  display: block;
}

.contact-area {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem; /* 原1.2rem */
  margin: 2rem 0 1.2rem; /* 原2.5rem 0 1.5rem */
  justify-content: center;
}

.contact-item {
  flex: 1 1 200px; /* 原220px */
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: 60px; /* 原80px */
  padding: 0.8rem 1.2rem; /* 原1rem 1.8rem */
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem; /* 原1rem */
  font-size: 1.1rem; /* 原1.2rem */
  box-shadow: 0 8px 18px var(--card-shadow);
}

.contact-item a {
  text-decoration: none;
  color: inherit;
  display: flex;
  align-items: center;
  gap: 0.8rem; /* 原1rem */
}

.contact-emoji {
  font-size: 1.7rem; /* 原1.9rem */
  filter: drop-shadow(2px 4px 4px rgba(0,0,0,0.1));
}

.footer {
  text-align: center;
  margin-top: 2.5rem; /* 原3rem */
  padding: 1.2rem 0.5rem 0.5rem; /* 原1.5rem 0.5rem 0.5rem */
  border-top: 1px solid var(--footer-border);
  backdrop-filter: blur(4px);
  font-size: 0.95rem; /* 原1rem */
}
.footer a, .footer a:visited { color: inherit; text-decoration: none; }
.footer a:hover { text-decoration: none; }



.back-to-top {
  position: fixed;
  bottom: 1.5rem; /* 原2rem */
  right: 1.5rem;
  width: 54px; /* 原60px */
  height: 54px;
  background: var(--btn-bg);
  backdrop-filter: blur(18px);
  border: 1px solid var(--btn-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem; /* 原2.2rem */
  cursor: pointer;
  z-index: 99;
  box-shadow: 0 10px 25px var(--btn-shadow);
  color: var(--btn-color);
  opacity: 0;
  visibility: hidden;
  transition: 0.25s;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

/* ===== 博客模式附加样式 ===== */
.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 30px 20px; /* 原40px 20px */
}

.post-card {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: 28px; /* 原32px */
  padding: 20px; /* 原24px */
  margin-bottom: 25px; /* 原30px */
  box-shadow: 0 10px 20px var(--card-shadow);
}

.post-title {
  font-size: 22px; /* 原24px */
  margin-bottom: 8px; /* 原10px */
}
.post-title a {
  color: inherit;
  text-decoration: none;
}
.post-meta {
  opacity: 0.8;
  font-size: 13px; /* 原14px */
  margin-bottom: 12px; /* 原15px */
  padding-bottom: 8px; /* 原10px */
  border-bottom: 1px dashed var(--card-border);
}
.post-content, .post-excerpt {
  line-height: 1.7;
}
.pagination {
  text-align: center;
  margin: 30px 0; /* 原40px 0 */
}
.pagination a, .pagination span {
  display: inline-block;
  padding: 6px 12px; /* 原8px 14px */
  margin: 0 3px; /* 原4px */
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--card-border);
  border-radius: 30px;
  color: inherit;
  text-decoration: none;
  font-size: 0.95rem;
}
.pagination .current {
  background: rgba(255,255,255,0.4);
  border-color: rgba(255,255,255,0.8);
}

/* ===== 移动端优化 ===== */
@media (max-width: 640px) {
  .wrapper { padding: 0.4rem 0.8rem; } /* 原0.5rem 1rem */
  .profile-card { gap: 1rem; padding: 0.6rem; } /* 原0.8rem */
  .avatar img { width: 72px; height: 72px; } /* 原80px */
  .profile-text .name { font-size: 1.5rem; } /* 原1.7rem */
  .profile-text .motto { font-size: 0.9rem; } /* 原1rem */
  .sites-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.7rem; /* 原0.8rem */
  }
  .site-card { padding: 0.8rem; } /* 原0.9rem */
  .site-name { font-size: 1.1rem; } /* 原1.2rem */
  .site-desc { font-size: 0.75rem; } /* 原0.8rem */
  .contact-item { padding: 0.7rem 0.9rem; font-size: 0.9rem; border-radius: 50px; } /* 原0.8rem 1rem, 1rem, 60px */
  .back-to-top { width: 48px; height: 48px; font-size: 1.8rem; bottom: 0.8rem; right: 0.8rem; } /* 原52px, 2rem, 1rem, 1rem */
  .palette-panel { top: 45px; right: -10px; min-width: 200px; } /* 原50px, 220px */
  .color-dot { width: 32px; height: 32px; }
  .color-preview { width: 32px; height: 32px; }
  .reset-btn { font-size: 0.8rem; padding: 0.3rem 0.6rem; }
}