/* base.css —— 底色/版式/字体，无业务逻辑 */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { background: #efe9dc; }
body {
  width: 100%; max-width: 960px; margin: 0 auto; padding: 12px 12px 64px;
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC",
    "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  color: #2b2b2b; font-size: 15px; line-height: 1.6;
  background: #fdf9f2; border-left: 1px solid #e0c49b; border-right: 1px solid #e0c49b;
  -webkit-font-smoothing: antialiased;
}
.top h1 { font-size: 21px; font-weight: 800; margin: 4px 0 2px; }
.top h1 .sub { font-size: 13px; font-weight: 400; color: #8e8e8e; margin-left: 8px; }
.note, .foot { font-size: 12px; color: #8e8e8e; }
.note { margin-bottom: 10px; }
.foot { margin-top: 24px; border-top: 1px solid #e0c49b; padding-top: 10px; }
#list { margin-top: 12px; }
mark { background: #ffe08a; border-radius: 3px; padding: 0 1px; }

/* 右上角下载入口 */
.dl-btn {
  position: fixed; top: 12px; right: 12px; z-index: 60;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px 8px 12px; border-radius: 999px;
  font-size: 13px; font-weight: 700; line-height: 1; white-space: nowrap;
  color: #fff7ec; background: #8a5a2b; border: 1px solid #6e4520;
  text-decoration: none; box-shadow: 0 2px 8px rgba(90, 60, 30, .28);
  transition: background .15s ease, transform .1s ease;
}
.dl-btn:hover { background: #9d6733; }
.dl-btn:active { transform: translateY(1px); }
.dl-btn:focus-visible { outline: 2px solid #8a5a2b; outline-offset: 2px; }
.dl-btn svg { width: 15px; height: 15px; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
/* 视口窄于正文栏 + 按钮宽度时，给标题留出避让空间，避免盖住文字 */
@media (max-width: 1120px) {
  .top h1 { padding-right: 124px; }
}
@media (max-width: 560px) {
  .dl-btn { top: 8px; right: 8px; padding: 7px 11px; font-size: 12px; }
  .dl-btn svg { width: 14px; height: 14px; }
  .top h1 { padding-right: 108px; }
}
@media print { .dl-btn { display: none; } }

@media (max-width: 560px) {
  body { padding: 8px 8px 56px; }
  .top h1 { font-size: 18px; }
}