/* ===== 设计令牌 ===== */
:root {
  --paper: #faf9f5;      /* 纸面底色 */
  --ink: #1f2328;        /* 主墨色 */
  --ink-soft: #57606a;   /* 次级文字 */
  --vermilion: #b03a2e;  /* 朱红（主强调，呼应红楼） */
  --vermilion-soft: #f7e8e5;
  --gold: #a07d3c;       /* 金棕点缀 */
  --card: #ffffff;
  --line: #e6e2d8;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(31,35,40,.05), 0 8px 24px rgba(31,35,40,.07);
}

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
}

/* ===== 顶部横幅 ===== */
.hero {
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(1200px 300px at 80% -80%, var(--vermilion-soft), transparent 70%),
    var(--paper);
}
.hero-inner { max-width: 960px; margin: 0 auto; padding: 72px 24px 48px; }
.hero-kicker {
  font-size: 12px; letter-spacing: .35em; color: var(--gold);
  font-weight: 600; margin-bottom: 12px;
}
.hero h1 { font-size: 34px; font-weight: 700; letter-spacing: .02em; }
.hero h1 .dot { color: var(--vermilion); margin: 0 6px; }
.hero-sub { margin-top: 12px; color: var(--ink-soft); font-size: 15px; }

/* ===== 项目卡片网格 ===== */
.grid {
  max-width: 960px; margin: 0 auto; padding: 40px 24px 8px;
  display: grid; gap: 20px;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px;
  box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 12px;
  transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 4px 8px rgba(31,35,40,.06), 0 14px 32px rgba(31,35,40,.10); }
.card-head { display: flex; align-items: center; gap: 12px; }
.card-icon {
  width: 40px; height: 40px; border-radius: 10px; flex: none;
  display: grid; place-items: center;
  background: var(--vermilion-soft); color: var(--vermilion);
}
.card-icon svg { width: 22px; height: 22px; }
.card h3 { font-size: 17px; }
.card p { font-size: 14px; color: var(--ink-soft); flex: 1; }
.card-meta { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--ink-soft); }
.badge {
  padding: 2px 10px; border-radius: 999px; font-weight: 600; font-size: 12px;
}
.badge.live { background: #e8f3e8; color: #256a2b; }
.badge.soon { background: #fdf3e0; color: #8a6a1f; }
.card a.enter {
  margin-top: 4px; display: inline-flex; align-items: center; gap: 6px;
  color: var(--vermilion); text-decoration: none; font-weight: 600; font-size: 14px;
}
.card a.enter:hover { text-decoration: underline; }
.card a.enter svg { width: 15px; height: 15px; }

/* ===== 开源仓库列表 ===== */
.repos { max-width: 960px; margin: 0 auto; padding: 32px 24px 56px; }
.repos h2 { font-size: 18px; margin-bottom: 16px; }
.repo-list { list-style: none; display: grid; gap: 10px; }
.repo-list a {
  display: flex; align-items: center; gap: 10px;
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 16px; text-decoration: none; color: var(--ink); font-size: 14px;
  transition: border-color .15s ease;
}
.repo-list a:hover { border-color: var(--vermilion); }
.repo-list svg { width: 18px; height: 18px; color: var(--ink-soft); flex: none; }
.repo-list .rname { font-weight: 600; }
.repo-list .rdesc { color: var(--ink-soft); font-size: 13px; }

/* ===== 页脚 ===== */
.foot {
  border-top: 1px solid var(--line); padding: 24px; text-align: center;
  color: var(--ink-soft); font-size: 13px;
}

@media (max-width: 560px) {
  .hero-inner { padding: 48px 20px 32px; }
  .hero h1 { font-size: 26px; }
}