/* 保留原模板的 800px 居中布局、蓝色链接和图文项目列表。 */
:root { color-scheme: light; --bg: #fff; --text: #222; --muted: #595959; --link: #1772d0; --hover: #a65300; --highlight: #ffffd0; --control: #f5f6f8; --border: #c8cdd3; }
:root[data-theme="dark"] { color-scheme: dark; --bg: #171a1f; --text: #e5e8ed; --muted: #b3bbc7; --link: #83baff; --hover: #ffc27a; --highlight: #343321; --control: #252a32; --border: #596474; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: Lato, Arial, "Microsoft YaHei", sans-serif; font-size: 14px; line-height: 1.65; }
main { max-width: 800px; margin: 0 auto; padding: 36px 20px 20px; }
a { color: var(--link); text-decoration: none; overflow-wrap: anywhere; }
a:hover, a:focus-visible { color: var(--hover); text-decoration: underline; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--link); outline-offset: 4px; }
.preferences { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
[hidden] { display: none !important; }
.preferences button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 46px; padding: 0 17px; border: 1px solid var(--border); border-radius: 999px; background: var(--bg); color: var(--text); font: inherit; font-size: 18px; line-height: 1; cursor: pointer; }
.preferences button:hover { border-color: var(--link); }
#language-toggle, #theme-toggle { width: 46px; padding: 0; flex-shrink: 0; }
.theme-icon { width: 22px; height: 22px; flex-shrink: 0; }
h1 { margin: 0 0 18px; font-size: 32px; font-weight: 400; text-align: center; line-height: 1.3; }
h2 { margin: 0 0 12px; font-size: 22px; font-weight: 400; line-height: 1.4; }
h3 { margin: 0 0 5px; font-size: 14px; font-weight: 700; }
p { margin: 10px 0; overflow-wrap: anywhere; }
.profile { display: flex; align-items: center; gap: 32px; padding: 12px 0 28px; }
.profile-text { flex: 1; min-width: 0; }
.portrait { width: 30%; max-width: 240px; aspect-ratio: 1; object-fit: cover; border-radius: 50%; }
.contact { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 8px; margin-top: 20px; color: var(--muted); }
.separator { color: var(--muted); }
/* 分割线中间清晰、两端渐隐；使用当前主题的文字颜色适配深浅色。 */
section { position: relative; margin-top: 32px; padding-top: 30px; }
section::before, footer::before { content: ""; display: block; position: absolute; top: 0; left: 0; width: 100%; height: 1px; background: linear-gradient(to right, transparent, var(--muted), transparent); opacity: .65; }
section > h2 { margin-bottom: 22px; font-weight: 600; }
.news-list { padding-left: 20px; margin: 0; }
.news-list li { padding-left: 2px; margin: 5px 0; }
.news-date { white-space: nowrap; font-variant-numeric: tabular-nums; }
.showcase { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 30px; align-items: center; padding: 12px 16px; }
.showcase-image { width: 180px; height: 180px; object-fit: contain; border-radius: 30px; }
.showcase h3 { font-size: 17px; color: var(--link); }
.showcase-description { font-style: italic; }
.showcase + .showcase { margin-top: 24px; }
.showcase .project-links { margin: 14px 0; }
.project { display: block; padding: 20px 16px; margin: 12px -4px; }
.project h3 { font-size: 17px; color: var(--text); font-weight: 700; }
.paper-resources { position: relative; margin-top: 12px; }
.paper-abstract { margin: 0; }
.paper-resource-links { position: absolute; top: 4px; left: calc(var(--abstract-label-width, 3.5em) + 8px); display: flex; align-items: center; gap: 8px; color: var(--muted); }
:root:lang(zh) .paper-resources { --abstract-label-width: 2em; }
.resource-placeholder { cursor: default; }
.paper-abstract summary { display: list-item; width: fit-content; list-style: none; color: var(--link); cursor: pointer; padding: 4px 0; }
.paper-abstract summary::-webkit-details-marker { display: none; }
.paper-abstract summary:hover, .paper-abstract[open] > summary { color: var(--hover); }
.paper-abstract summary:focus-visible { outline: 2px solid var(--link); outline-offset: 4px; }
.paper-abstract p { margin-top: 12px; font-style: italic; }
.featured { background: var(--highlight); }
.metadata { margin: 2px 0; }
.project-links { margin: 7px 0; color: var(--muted); }
.entry { margin-top: 16px; }
.entry p { margin: 4px 0; }
.entry-heading { display: flex; justify-content: space-between; gap: 12px; }
.entry-heading span { color: var(--muted); font-size: 13px; }
footer { position: relative; margin-top: 40px; padding-top: 24px; text-align: right; font-size: 12px; color: var(--muted); }
@media (max-width: 600px) {
  main { padding: 24px 18px; }
  .profile { flex-direction: column-reverse; gap: 24px; }
  .portrait { width: 160px; }
  h1 { font-size: 28px; }
  .project { margin: 12px 0; }
  .entry-heading { flex-direction: column; gap: 0; }
  .showcase { grid-template-columns: 1fr; gap: 20px; padding: 8px 0; }
  .showcase-image { justify-self: center; width: 160px; height: 160px; }
}