:root {
  --bg: #fafaf8;
  --ink: #1c2321;
  --accent: #1f3a2e;
  --accent-soft: #e8efe9;
  --line: #d9d9d2;
  --muted: #6b7370;
  --warn-bg: #fdf3e4;
  --warn-line: #e8c98f;
  --card: #ffffff;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  font-size: 16px;
}
.wrap { max-width: 880px; margin: 0 auto; padding: 0 24px 64px; }

/* Header */
.site-head {
  background: var(--accent);
  color: #f2f5f1;
  padding: 14px 0;
}
.site-head .wrap { padding-bottom: 0; padding-top: 0; display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; }
.site-title { font-weight: 700; letter-spacing: .02em; color: #f2f5f1; text-decoration: none; font-size: 17px; }
.lang-switch { font-size: 14px; }
.lang-switch a { color: #cfe0d4; text-decoration: none; border-bottom: 1px dotted #cfe0d4; padding-bottom: 1px; }
.lang-switch a:hover { color: #fff; border-color: #fff; }

/* Headings */
h1, h2, h3 { color: var(--accent); line-height: 1.35; }
:lang(zh) h1, :lang(zh) h2 { font-family: "Noto Serif SC", "Songti SC", "STSong", serif; }
h1 { font-size: 26px; margin: 28px 0 10px; }
h2 { font-size: 20px; margin: 34px 0 8px; border-bottom: 1px solid var(--line); padding-bottom: 6px; }
h3 { font-size: 17px; margin: 24px 0 6px; }

/* Text elements */
a { color: #205a41; }
blockquote {
  margin: 16px 0; padding: 10px 18px;
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 6px 6px 0;
  color: #2c3a33; font-size: 15px;
}
blockquote p { margin: 6px 0; }
code {
  background: #eef0ea; border-radius: 4px; padding: 1px 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13.5px; word-break: break-all;
}
a code { background: #e3ece5; color: inherit; }
hr { border: none; border-top: 1px solid var(--line); margin: 30px 0; }
ul, ol { padding-left: 26px; }
li { margin: 4px 0; }

/* Tables */
.tbl-scroll { overflow-x: auto; margin: 14px 0; }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; background: var(--card); }
th, td { border: 1px solid var(--line); padding: 7px 11px; text-align: left; vertical-align: top; }
th { background: var(--accent-soft); color: var(--accent); white-space: nowrap; }
tr:nth-child(even) td { background: #fcfcfa; }

/* Breadcrumb + footer */
.crumb { margin: 22px 0 0; font-size: 14px; color: var(--muted); }
.crumb a { color: var(--muted); text-decoration: none; }
.crumb a:hover { color: var(--accent); }
.site-foot {
  margin-top: 56px; padding-top: 16px; border-top: 1px solid var(--line);
  font-size: 13px; color: var(--muted);
}

/* Deadline banner (index) */
.deadlines {
  margin: 24px 0 6px; padding: 14px 18px;
  background: var(--warn-bg); border: 1px solid var(--warn-line); border-radius: 8px;
}
.deadlines .dl-title { font-weight: 700; color: #7a5210; margin-bottom: 6px; font-size: 15px; }
.deadlines ul { margin: 0; padding-left: 22px; font-size: 14.5px; }
.deadlines .dl-hot { font-weight: 700; }

/* TOC list (index) */
.toc-intro { color: var(--muted); font-size: 15px; margin: 4px 0 18px; }
.toc { list-style: none; padding: 0; margin: 18px 0; counter-reset: tocitem; }
.toc > li {
  background: var(--card); border: 1px solid var(--line); border-radius: 8px;
  margin: 10px 0; padding: 13px 16px 13px 54px; position: relative;
}
.toc > li::before {
  counter-increment: tocitem; content: counter(tocitem);
  position: absolute; left: 14px; top: 14px;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent); color: #fff;
  font-size: 14px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.toc .t-link { font-size: 16.5px; font-weight: 700; text-decoration: none; }
.toc .t-link:hover { text-decoration: underline; }
.toc .t-desc { font-size: 14px; color: var(--muted); margin-top: 3px; }
.toc .t-extra { font-size: 13.5px; margin-top: 5px; }
.tag {
  display: inline-block; font-size: 11.5px; font-weight: 600;
  padding: 1px 8px; border-radius: 10px; margin-left: 8px; vertical-align: 2px;
  background: var(--accent-soft); color: var(--accent); white-space: nowrap;
}
.tag.en { background: #e7ecf4; color: #2c4a72; }
.tag.raw { background: #f1e8dc; color: #7a5210; }

/* Originals gallery */
.gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin: 20px 0; }
.gallery figure { margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 10px; }
.gallery img { width: 100%; height: auto; border-radius: 4px; display: block; }
.gallery figcaption { font-size: 13.5px; color: var(--muted); margin-top: 8px; line-height: 1.5; }
.filelist { list-style: none; padding: 0; }
.filelist li { background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 9px 14px; margin: 8px 0; font-size: 14.5px; }

@media (max-width: 1000px) {
  .wrap { max-width: 92vw; }
}
@media (max-width: 700px) {
  body { font-size: 15px; }
  .wrap { padding: 0 14px 48px; }
  h1 { font-size: 22px; }
  h2 { font-size: 18px; }
  .gallery { grid-template-columns: 1fr; }
  .toc > li { padding-left: 48px; }
}
@media print {
  .site-head, .crumb, .site-foot, .lang-switch { display: none; }
  body { background: #fff; }
  a { color: inherit; text-decoration: none; }
}