/* 梦幻星空风 —— doc/03 §2.2 · design.md「手工艺术书」质感层 */
:root[data-theme="dream"] {
  --bg: #F6F3FF;
  --bg-soft: #EFE9FF;
  --card: #FFFFFF;
  --primary: #9B8CE6;
  --primary-soft: #E9E4FF;
  --accent: #7FC8E8;
  --accent-2: #FFC7DE;
  --text: #4A4460;
  --text-soft: #8B85A3;
  --line: #E0DAF2;
  --danger: #E58FA2;
  --seal: var(--primary);
  --font-title: "LXGW WenKai", "霞鹜文楷", "Kaiti SC", "STKaiti", "KaiTi", cursive;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --radius-card: 24px;
}

/* 纸面：淡紫夜空 + 双柔光星云 + 月牙 + 星点砖 */
:root[data-theme="dream"] body {
  background-image:
    radial-gradient(560px 420px at 88% -60px, color-mix(in srgb, var(--accent-2) 26%, transparent), transparent 72%),
    radial-gradient(680px 520px at -8% 26%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 72%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M20.4 13.2A8.7 8.7 0 1 1 10.8 3.6a7.2 7.2 0 1 0 9.6 9.6z' fill='%239B8CE6' fill-opacity='.4'/%3E%3C/svg%3E"),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='170' height='170' viewBox='0 0 170 170'%3E%3Cg fill='%23A897E8'%3E%3Ccircle cx='22' cy='32' r='1.6' opacity='.4'/%3E%3Ccircle cx='96' cy='14' r='1.2' opacity='.3'/%3E%3Cpath d='M138 62l1.6 5.4 5.4 1.6-5.4 1.6-1.6 5.4-1.6-5.4-5.4-1.6 5.4-1.6z' opacity='.35'/%3E%3Ccircle cx='52' cy='104' r='1.4' opacity='.3'/%3E%3Ccircle cx='124' cy='138' r='1.8' opacity='.35'/%3E%3Cpath d='M36 146l1.3 4.7 4.7 1.3-4.7 1.3-1.3 4.7-1.3-4.7-4.7-1.3 4.7-1.3z' opacity='.25'/%3E%3Ccircle cx='8' cy='80' r='1.1' opacity='.25'/%3E%3C/g%3E%3C/svg%3E");
  background-repeat: no-repeat, no-repeat, no-repeat, repeat;
  background-position: 0 0, 0 0, right 7% top 130px, 0 0;
  background-size: auto, auto, 46px 46px, 170px 170px;
}