/* ============================================================
   Your Name — Academic Homepage · v3
   设计语言:经典学术主页(参考 EthenJ.github.io)
   - 顶部吸顶导航 + 左侧资料栏 + 右内容,板块间 hairline 分隔
   - Source Serif 4 标题 + Inter 正文(全部自托管)
   我们自己的调整:
   - 强调色换成偏靛蓝的墨蓝(--link)
   - 资料栏用 SVG 图标代替字符图标
   - 字体自托管,任何网络环境都稳定
   - 导航滚动高亮、focus 可见性、打印样式、减弱动效适配
   换主题色:改 --link / --link-dark / --selection
   ============================================================ */

/* ---------- 0. 变量 ---------- */
:root {
  --ink: #333;               /* 主文字 */
  --ink-strong: #222;        /* 标题 */
  --muted: #666;             /* 次要文字 */
  --faint: #777;             /* 日期、脚注 */
  --light: #f6f7f8;          /* 浅灰底(标签、页脚) */
  --line: #e5e7eb;           /* hairline */
  --link: #2b4acb;           /* 链接色:墨蓝(我们的差异点) */
  --link-dark: #1e358f;
  --chip-line: #cfd5e6;      /* 链接徽章描边 */
  --chip-hover: #eef1fb;     /* 链接徽章悬停底色 */
  --selection: #dfe5fb;

  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "JetBrains Mono", Consolas, monospace;

  --max: 1180px;
  --masthead-h: 68px;
}

/* ---------- 1. 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--masthead-h) + 20px); }

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font: 15px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip; /* 保险:裁掉任何意外横向溢出(不影响 sticky) */
}

::selection { background: var(--selection); }
img { max-width: 100%; height: auto; }
h1, h2, h3, h4 { margin: 0; }
p { margin: 0 0 1em; }
strong { font-weight: 600; }

a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-dark); text-decoration: underline; }

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip-link {
  position: fixed;
  top: -60px;
  left: 20px;
  z-index: 100;
  padding: 10px 14px;
  background: #111;
  color: #fff;
  font-size: 13px;
}
.skip-link:focus { top: 10px; }

/* ---------- 2. 顶部导航 ---------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.masthead-inner {
  max-width: var(--max);
  height: var(--masthead-h);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
}
.site-title {
  font: 700 20px var(--serif);
  color: var(--ink-strong);
}
.site-title img { display: block; height: 38px; width: auto; }
.site-title:hover { text-decoration: none; }

.masthead nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 26px;
}
.masthead nav a {
  position: relative;
  font-size: 13px;
  font-weight: 500;
  color: #444;
  padding-bottom: 2px;
}
/* hover 下划线从左滑入;当前板块(滚动高亮)常显 */
.masthead nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -3px;
  height: 1.5px;
  background: var(--link);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .22s ease;
}
.masthead nav a:hover { color: var(--link); text-decoration: none; }
.masthead nav a:hover::after, .masthead nav a.active::after { transform: scaleX(1); }
.masthead nav a.active { color: var(--link); }  /* 滚动高亮(我们的附加项) */

.menu-toggle {
  display: none;
  margin-left: auto;
  border: 1px solid var(--line);
  background: #fff;
  padding: 7px 12px;
  color: #444;
  font: 500 13px var(--sans);
  cursor: pointer;
  border-radius: 4px;
}

/* ---------- 3. 页面骨架 ---------- */
.page {
  max-width: var(--max);
  margin: 0 auto;
  padding: 52px 24px 90px;
  display: grid;
  grid-template-columns: 245px minmax(0, 1fr);
  gap: 74px;
}

/* ---------- 4. 资料栏 ---------- */
.author-profile {
  position: sticky;
  top: calc(var(--masthead-h) + 44px);
  align-self: start;
}

/* 无照片时:渐变圆底 + 衬线首字母;有照片直接 <img> 替换 */
.avatar {
  width: 168px;
  height: 168px;
  margin-bottom: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: linear-gradient(145deg, #e9eefb, #f8fafc);
  border: 1px solid #d9e0ee;
  color: var(--link);
  font: 600 54px var(--serif);
  user-select: none;
  transition: transform .3s ease, box-shadow .3s ease;
}
.avatar:hover { transform: scale(1.03); box-shadow: 0 10px 26px rgba(30, 40, 80, .14); }
.avatar img { width: 100%; height: 100%; display: block; object-fit: cover; }

.author-profile h1 {
  font: 700 27px/1.15 var(--serif);
  color: var(--ink-strong);
}
.name-cn { margin: 3px 0 18px; color: var(--faint); font-size: 14px; }
.author-bio { margin: 0 0 7px; font-weight: 600; }
.affiliation { margin: 0 0 24px; color: var(--muted); font-size: 13px; }

.profile-links {
  padding: 18px 0 0;
  margin: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.profile-links li {
  margin: 9px 0;
  font-size: 13px;
  color: #555;
  display: flex;
  align-items: center;
  gap: 10px;
}
.profile-links svg { width: 15px; height: 15px; flex: none; color: #9aa3ad; transition: color .18s ease; }
/* 侧栏链接行 hover:整行微移 + 图标点亮 */
.profile-links li { transition: transform .18s ease; }
.profile-links li:hover { transform: translateX(3px); }
.profile-links li:hover svg { color: var(--link); }

/* ---------- 5. 内容板块 ---------- */
main { min-width: 0; }

.section-block {
  padding: 0 0 56px;
  margin-bottom: 54px;
  border-bottom: 1px solid var(--line);
}
.section-block:last-child { margin-bottom: 0; }

.section-block > h2, .section-title h2 {
  margin: 0 0 28px;
  font: 700 30px var(--serif);
  color: var(--ink-strong);
}
.section-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
}
.section-title > a { font-size: 12px; }
.section-note { margin: 0 0 18px; color: var(--faint); font-size: 12px; }

/* Publications 分页:搜索工具条 */
.pub-toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin: 30px 0 6px;
}
.pub-toolbar input[type="search"] {
  flex: 1;
  min-width: 220px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font: 14px var(--sans);
  color: var(--ink);
  background: #fff;
}
.pub-toolbar input[type="search"]::placeholder { color: var(--faint); }
.pub-toolbar input[type="search"]:focus {
  outline: none;
  border-color: var(--link);
  box-shadow: 0 0 0 3px var(--chip-hover);
}
.pub-count { font-size: 12px; color: var(--faint); white-space: nowrap; }
.pub-empty { padding: 34px 0; margin: 0; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); }

/* 搜索:命中高亮(标准 <mark> 玩法) */
.pub-list mark {
  background: #fff2b8;
  color: inherit;
  padding: 0 1px;
  border-radius: 2px;
}

/* 搜索:新出现的条目淡入(消失即时,出现柔和) */
@keyframes pub-enter {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: none; }
}
.pub-list .publication.enter { animation: pub-enter 0.22s ease-out; }

/* About */
.kicker {
  margin: 0 0 12px;
  color: var(--link);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}
.intro h2 {
  max-width: 780px;
  margin: 0 0 27px;
  font: 700 clamp(32px, 4.3vw, 50px)/1.13 var(--serif);
  letter-spacing: -0.025em;
  color: var(--ink-strong);
}
.intro > p:not(.kicker) { max-width: 820px; font-size: 16px; }
.intro h3 { margin: 31px 0 12px; font: 700 20px var(--serif); color: var(--ink-strong); }

.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags span {
  padding: 5px 10px;
  background: var(--light);
  border: 1px solid var(--line);
  border-radius: 3px;
  font-size: 12px;
  color: #555;
}

/* News(参考站没有,用同一套视觉语言补的) */
.news-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.news-list li {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 20px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.news-list .date { color: var(--faint); font-size: 12px; font-weight: 600; padding-top: 2px; white-space: nowrap; }
.news-list p { margin: 0; }
/* 最后一条下面不画线:否则和板块底边线/页脚顶线成双横线 */
.news-list li:last-child, .award-list li:last-child, .post-list li:last-child { border-bottom: none; }

/* Publications */
.publication {
  display: grid;
  grid-template-columns: 60px 230px 1fr;
  gap: 22px;
  padding: 25px 0;
  border-top: 1px solid var(--line);
}
/* 论文 teaser 配图(点击进论文,和标题链接一致)。
   统一 2.4:1 框(比三图最矮的还略高,保证每张图都满宽显示),
   contain 完整显示,白底补齐 */
.pub-thumb img {
  display: block;
  width: 100%;
  aspect-ratio: 2.4 / 1;
  object-fit: contain;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  transition: transform .25s ease, box-shadow .25s ease;
}
/* hover 轻微放大 + 柔和投影 */
.pub-thumb:hover img { transform: scale(1.02); box-shadow: 0 8px 22px rgba(30, 40, 80, .10); }

/* 链接箭头 hover 微移:↗ 斜向上挪,→ 向右挪 */
.arr { display: inline-block; transition: transform .18s ease; }
a:hover .arr { transform: translate(1.5px, -1.5px); }
a:hover .arr.arr-r { transform: translateX(3px); }

/* 滚动渐入:JS 给元素加 .reveal(初始隐藏),入视口加 .reveal-in。
   无 JS 时没有 .reveal,内容照常显示(渐进增强) */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity .55s ease, transform .55s ease; }
.reveal.reveal-in { opacity: 1; transform: none; }

/* 回到顶部(JS 创建的悬浮按钮) */
.to-top {
  position: fixed;
  right: 26px; bottom: 26px;
  width: 40px; height: 40px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff;
  color: var(--muted);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s,
              color .15s ease, border-color .15s ease;
  box-shadow: 0 4px 14px rgba(30, 40, 80, .10);
  z-index: 60;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { color: var(--link); border-color: var(--link); }
.pub-year, .entry-date { padding-top: 3px; color: var(--faint); font-size: 12px; font-weight: 600; }

.publication h3, .entry h3 {
  margin: 0 0 8px;
  font: 600 19px/1.35 var(--serif);
  color: var(--ink-strong);
}
.publication h3 a { color: var(--ink-strong); }
.publication h3 a:hover { color: var(--link); text-decoration: none; }

.publication p { margin: 5px 0; }
.authors { font-size: 13px; color: #555; }
.authors strong { color: var(--ink); }   /* 自己的名字 */
.venue { font-size: 13px; font-style: italic; color: #444; }
/* 一句话介绍(我们的附加项,可删) */
.pub-tldr { font-size: 13.5px; color: var(--muted); max-width: 66ch; }

/* 链接徽章:arXiv / PDF / Code … */
.item-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.item-links a {
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid var(--chip-line);
  border-radius: 3px;
  font-size: 11px;
  font-weight: 600;
  background: #fff;
  transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease;
}
.item-links a:hover {
  text-decoration: none;
  background: var(--chip-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(30, 40, 80, .12);
}

/* Projects / Experience 条目 */
.entry {
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 24px;
  padding: 25px 0;
  border-top: 1px solid var(--line);
}
/* 带单位 logo 的经历:日期 | logo | 文字 三列 */
.entry.has-logo { grid-template-columns: 112px 52px 1fr; }
.entry-logo {
  width: 52px;
  height: 52px;
  margin-top: 2px;
  padding: 5px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 9px;
  object-fit: contain;
}
.entry p { margin: 7px 0; color: #555; font-size: 14px; }
.entry-role { font-size: 13px; font-weight: 600; color: #444 !important; }

/* Awards */
.award-list { padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--line); }
.award-list li {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 20px;
  padding: 19px 0;
  border-bottom: 1px solid var(--line);
}
.award-list li > span { color: var(--faint); font-size: 12px; padding-top: 2px; }
.award-list strong { font-family: var(--serif); font-size: 17px; color: var(--ink-strong); }
.award-list p { margin: 3px 0 0; color: var(--muted); font-size: 13px; }

/* ---------- 6. 页脚 ---------- */
footer { border-top: 1px solid var(--line); background: var(--light); }
footer > div {
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 24px 40px;
  color: var(--faint);
  font-size: 11px;
}
footer p { margin: 4px 0; }

/* ---------- 7. Blog(单栏窄页) ---------- */
.page-single {
  max-width: 820px;
  margin: 0 auto;
  padding: 52px 24px 90px;
}
.page-single .intro h2 { font-size: clamp(30px, 4vw, 42px); }

.post-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.post-list li {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.post-list .date { color: var(--faint); font-size: 12px; font-weight: 600; padding-top: 3px; white-space: nowrap; }
.post-list h3 { margin: 0 0 4px; font: 600 19px/1.35 var(--serif); }
.post-list h3 a { color: var(--ink-strong); }
.post-list h3 a:hover { color: var(--link); text-decoration: none; }
.post-list p { margin: 0; font-size: 13px; color: var(--muted); }

/* 文章页 */
.post-header { margin-bottom: 36px; }
.post-header .back { display: inline-block; font-size: 12px; margin-bottom: 30px; }
.post-header h1 {
  font: 700 clamp(30px, 4vw, 42px)/1.2 var(--serif);
  letter-spacing: -0.02em;
  color: var(--ink-strong);
}
.post-meta { margin: 12px 0 0; color: var(--faint); font-size: 12px; font-weight: 600; }

.prose { max-width: 68ch; font-size: 15.5px; }
.prose p { margin-bottom: 1.25em; }
.prose h2 { font: 700 22px var(--serif); color: var(--ink-strong); margin: 2.2em 0 0.7em; }
.prose h3 { font: 600 18px var(--serif); color: var(--ink-strong); margin: 2em 0 0.5em; }
.prose ul, .prose ol { padding-left: 1.4em; margin: 0 0 1.25em; }
.prose li { margin-bottom: 0.35em; }
.prose blockquote {
  margin: 1.8em 0;
  padding: 2px 0 2px 18px;
  border-left: 2px solid var(--link);
  font-family: var(--serif);
  font-style: italic;
  font-size: 17px;
  color: #4a4a45;
}
.prose blockquote p { margin: 0; }
.prose code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--light);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 1px 5px;
}
.prose pre {
  background: var(--light);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 16px 18px;
  overflow-x: auto;
  margin: 1.6em 0;
}
.prose pre code { background: none; border: 0; padding: 0; font-size: 13px; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2.4em 0; }
.prose img { border-radius: 6px; border: 1px solid var(--line); margin: 1em 0; }

/* ---------- 8. 响应式 ---------- */
@media (max-width: 1050px) {
  /* 论文条目收窄:配图叠到文字上方 */
  .publication { grid-template-columns: 1fr; }
  .pub-year { padding-top: 0; }
  .pub-thumb { max-width: 440px; margin: 2px 0 8px; }
}

@media (max-width: 850px) {
  .masthead nav {
    position: absolute;
    top: var(--masthead-h);
    left: 0;
    right: 0;
    padding: 18px 24px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
  }
  .masthead nav.open { display: flex; }
  .menu-toggle { display: block; }

  .page { grid-template-columns: 1fr; gap: 45px; padding-top: 38px; }

  /* 资料栏:头像在左,信息在右 */
  .author-profile {
    position: static;
    display: grid;
    grid-template-columns: 112px 1fr;
    column-gap: 22px;
  }
  .avatar { grid-row: 1 / 4; width: 112px; height: 112px; margin: 0; font-size: 36px; }
  .author-profile h1 { align-self: end; }
  .name-cn { margin-bottom: 7px; }
  .author-bio, .affiliation { grid-column: 2; }
  .profile-links { grid-column: 1 / 3; margin-top: 20px; columns: 2; column-gap: 30px; }
  .profile-links li { break-inside: avoid; }
}

@media (max-width: 560px) {
  .masthead-inner, .page, .page-single, footer > div { padding-left: 18px; padding-right: 18px; }
  .page { padding-bottom: 55px; }
  .author-profile { grid-template-columns: 86px 1fr; column-gap: 17px; }
  .avatar { width: 86px; height: 86px; font-size: 28px; }
  .author-profile h1 { font-size: 23px; }
  .author-bio { font-size: 13px; }
  .profile-links { columns: 1; }
  .intro h2 { font-size: 32px; }
  .section-block { padding-bottom: 42px; margin-bottom: 42px; }
  .publication, .entry, .entry.has-logo { grid-template-columns: 1fr; gap: 5px; }
  .pub-year, .entry-date { padding: 0; }
  .entry-logo { width: 44px; height: 44px; margin: 6px 0; }
  .section-title { align-items: flex-start; flex-direction: column; gap: 0; }
  .news-list li { grid-template-columns: 1fr; gap: 2px; padding: 13px 0; }
  .award-list li { grid-template-columns: 48px 1fr; gap: 14px; }
  .post-list li { grid-template-columns: 1fr; gap: 4px; }
}

/* ---------- 9. 打印与动效偏好 ---------- */
@media print {
  .masthead, .skip-link, .to-top { display: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .page { display: block; max-width: none; padding: 0; }
  .author-profile { position: static; margin-bottom: 30px; }
  a { color: var(--ink); text-decoration: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}