:root {
  --bg: #0e0e10;
  --bg-soft: #17171a;
  --text: #ececef;
  --text-dim: #8e939e;
  --line: #26262b;
  --radius: 12px;
  --maxw: 960px;
  --icon: #9ea3ae;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: rgba(14, 14, 16, 0.78);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  color: var(--text);
}

/* 左上角内联 SVG logo */
.brand-logo {
  display: block;
  height: 40px;
  width: auto;
  transition: opacity .2s;
}
.brand:hover .brand-logo { opacity: .8; }

/* 导航 */
.site-nav { display: flex; gap: 24px; }
.site-nav a {
  font-size: 14px;
  color: var(--text-dim);
  transition: color .2s;
}
.site-nav a:hover { color: var(--text); }

/* ===== 主体 ===== */
.site-main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 首屏 ===== */
.hero {
  padding: 80px 0 64px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* 首屏 SVG logo：和顶部同款，放大显示 */
.hero-logo {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  color: var(--text);
}

.hero-sub {
  margin-top: 8px;
  font-size: 15px;
  color: var(--text-dim);
  letter-spacing: 2px;
}

/* ===== 区块标题 ===== */
.section-title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 2px;
  margin: 48px 0 20px;
}

/* ===== 作品网格 ===== */
.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
  padding-bottom: 80px;
}

.work-card {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s, border-color .25s, background .25s;
}
.work-card:hover {
  transform: translateY(-4px);
  border-color: #3a3a42;
  background: #1b1b20;
}

/* 封面区域 */
.work-cover {
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, #1e1e23, #141418);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--icon);
  position: relative;
  overflow: hidden;
}
.work-card:hover .work-cover { color: #cfd3db; }

/* 封面图标 */
.work-cover i {
  font-size: 64px;
  line-height: 1;
  transition: transform .3s, color .3s;
}
.work-card:hover .work-cover i {
  transform: scale(1.08) rotate(-3deg);
}

/* 封面图片（远程作品用） */
.work-cover img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.work-title {
  font-size: 15px;
  font-weight: 600;
  padding: 14px 16px 4px;
}

.work-desc {
  font-size: 13px;
  color: var(--text-dim);
  padding: 0 16px 16px;
}

/* ===== 作品卡片通用：标签、键鼠标记 ===== */
.work-tags {
  display: flex;
  gap: 6px;
  padding: 0 16px 10px;
  flex-wrap: wrap;
}
.work-tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 20px;
  background: #1b1b20;
  color: var(--text-dim);
  border: 1px solid var(--line);
}
.work-tag-mouse {
  background: #2a1f1a;
  border-color: #4a3528;
  color: #ffb380;
}
.work-tag-mouse i {
  font-size: 11px;
  margin-right: 3px;
  vertical-align: -1px;
}

/* ===== 页脚 ===== */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 32px 24px;
  text-align: center;
  font-size: 12px;
  color: var(--text-dim);
}

/* ===== 响应式 ===== */
@media (max-width: 640px) {
  .hero { padding: 56px 0 40px; }
  .hero-logo { max-width: 280px; }
  .hero-sub { font-size: 13px; }
  .site-nav { gap: 16px; }
  .site-nav a { font-size: 13px; }
  .brand-logo { height: 32px; }
  .work-cover i { font-size: 52px; }
}