/* ==========================================================================
   AIO4CPS · 课题组网站样式
   设计取向：学术期刊式排版 —— 暖纸色底、墨色正文、单一深蓝强调色、发丝线分隔。
   结构：1 变量 · 2 基础 · 3 页头导航 · 4 通用组件 · 5 首页 · 6 研究方向
         7 研究成果 · 8 新闻 · 9 招生合作 · 10 功能区 · 11 演示 · 12 灯箱与浮层
         13 页脚 · 14 响应式 · 15 打印
   事务系统 / 论文共享的专用样式分别在 affairs.css、paper-sharing.css
   ========================================================================== */

/* 1 · 变量 ---------------------------------------------------------------- */
:root{
  --paper:#faf9f5;
  --panel:#ffffff;
  --tint:#f3f1ea;
  --ink:#18202b;
  --ink-2:#394453;
  --muted:#667180;
  --rule:#d9d5c9;
  --rule-soft:#e8e5db;
  --rule-strong:#b8b3a3;
  --accent:#17407a;
  --accent-deep:#0e2c58;
  --accent-wash:#edf1f7;
  --mark:#8c5f1d;
  --ok:#2d6a4f;
  --danger:#a2372f;

  --serif:Georgia,"Times New Roman","Songti SC","Noto Serif CJK SC","Source Han Serif SC","Microsoft YaHei",serif;
  --sans:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Roboto,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;

  --max:1120px;
  --gutter:24px;
  --radius:3px;
  --header-h:64px;

  /* 兼容事务系统与论文共享沿用的变量名 */
  --bg:var(--paper);
  --surface:var(--panel);
  --line:var(--rule);
  --line-strong:var(--rule-strong);
  --text:var(--ink);
  --primary:var(--accent);
  --primary-2:var(--accent-deep);
  --gold:var(--mark);
  --teal:var(--ok);
}

/* 2 · 基础 ---------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none !important}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 56px);-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--paper);color:var(--ink-2);font-family:var(--sans);font-size:15.5px;line-height:1.85;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
main{flex:1 0 auto}
img,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
p{margin:0}
h1,h2,h3,h4{margin:0;color:var(--ink);font-family:var(--serif);font-weight:700;line-height:1.3}
ul,ol{margin:0;padding:0;list-style:none}
svg{width:1em;height:1em;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
::selection{background:#d7e2f2;color:var(--ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.skip-link{position:absolute;left:-9999px;top:auto}
.skip-link:focus{left:12px;top:12px;z-index:200;background:var(--panel);padding:8px 14px;border:1px solid var(--rule)}
.num{font-family:var(--serif);font-variant-numeric:lining-nums tabular-nums}

/* 入场动效仅在脚本可用时启用，避免内容被隐藏 */
.js .reveal{opacity:0;transform:translateY(8px);transition:opacity .5s ease,transform .5s ease}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* 3 · 页头导航 ------------------------------------------------------------ */
.topbar{position:sticky;top:0;z-index:60;background:var(--paper);border-bottom:1px solid var(--rule);transition:box-shadow .2s ease}
.topbar.is-scrolled{box-shadow:0 1px 0 var(--rule),0 6px 14px -10px rgba(24,32,43,.35)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:12px;min-width:0;flex:none}
.brand img{width:38px;height:38px;object-fit:contain;flex:none}
.brand-text{display:flex;flex-direction:column;min-width:0;line-height:1.2}
.brand-cn{font-family:var(--serif);font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.02em;white-space:nowrap}
.brand-en{margin-top:3px;font-family:var(--serif);font-size:11px;font-style:italic;color:var(--muted);letter-spacing:.03em;white-space:nowrap}
.navlinks{display:flex;align-items:stretch;gap:2px;height:100%}
.navlinks a{position:relative;display:flex;align-items:center;padding:0 12px;color:var(--ink-2);font-size:14px;white-space:nowrap;transition:color .15s ease}
.navlinks a::after{content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .2s ease}
.navlinks a:hover{color:var(--accent)}
.navlinks a:hover::after{transform:scaleX(.4)}
.navlinks a.active{color:var(--accent);font-weight:600}
.navlinks a.active::after{transform:scaleX(1)}
.hamburger{display:none;align-items:center;gap:8px;white-space:nowrap;flex:none;height:36px;padding:0 12px;border:1px solid var(--rule-strong);border-radius:var(--radius);background:transparent;color:var(--ink);font:inherit;font-size:14px;cursor:pointer}
.hamburger::before{content:"";width:14px;height:2px;background:currentColor;box-shadow:0 -5px 0 currentColor,0 5px 0 currentColor}
.mobile{display:none;border-top:1px solid var(--rule);background:var(--paper)}
.mobile a{display:block;padding:13px var(--gutter);border-bottom:1px solid var(--rule-soft);color:var(--ink-2);font-size:15px}
.mobile a.active{color:var(--accent);font-weight:600;background:var(--accent-wash)}

/* 4 · 通用组件 ------------------------------------------------------------ */
.section{padding:48px 0}
.section-tight{padding:28px 0}
.section-tint{background:var(--tint);border-top:1px solid var(--rule-soft);border-bottom:1px solid var(--rule-soft)}

/* 页面标题（子页面） */
.page-head{padding:52px 0 30px;border-bottom:1px solid var(--rule)}
.page-head .eyebrow{margin-bottom:10px}
.page-title{font-size:36px;letter-spacing:.02em;line-height:1.25}
.page-lead{margin-top:12px;max-width:62ch;color:var(--muted);font-size:16px;line-height:1.8}

/* 小标签：英文题眼 / 栏目标记 */
.eyebrow,.section-chip{display:inline-block;padding:0;border:0;background:none;color:var(--mark);font-family:var(--sans);font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;line-height:1.4}

/* 区块标题：粗上线 + 衬线标题 */
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:26px;padding-top:12px;border-top:2px solid var(--ink)}
.sec-head h2{font-size:24px;letter-spacing:.02em}
.sec-head .en{margin-left:10px;color:var(--muted);font-size:15px;font-style:italic;font-weight:400}
.more-link{flex:none;color:var(--accent);font-size:14px;white-space:nowrap}
.more-link::after{content:" →";transition:margin .15s ease}
.more-link:hover{text-decoration:underline;text-underline-offset:3px}
.more-link:hover::after{margin-left:3px}

/* 正文链接 */
.prose a:not(.btn-primary):not(.btn-secondary),.text-link{color:var(--accent);text-decoration:underline;text-decoration-color:rgba(23,64,122,.35);text-underline-offset:3px}
.prose a:hover,.text-link:hover{text-decoration-color:var(--accent)}
.prose p+p{margin-top:.9em}
.prose{text-align:justify;text-justify:inter-character}

/* 按钮 */
.btn-primary,.btn-secondary,.btn-danger{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border:1px solid transparent;border-radius:var(--radius);font:inherit;font-size:14px;font-weight:600;line-height:1.4;cursor:pointer;transition:background .15s ease,border-color .15s ease,color .15s ease}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);border-color:var(--accent-deep)}
.btn-secondary{background:transparent;border-color:var(--rule-strong);color:var(--ink)}
.btn-secondary:hover{border-color:var(--accent);color:var(--accent)}
.btn-danger{background:transparent;border-color:#e3c6c2;color:var(--danger)}
.btn-danger:hover{background:#fbf1ef;border-color:var(--danger)}
button:disabled{opacity:.5;cursor:not-allowed}

/* 标签与状态 */
.tag{display:inline-block;padding:1px 8px;border:1px solid var(--rule-strong);border-radius:2px;color:var(--ink-2);font-size:12px;line-height:1.7;white-space:nowrap}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.badge,.pill{display:inline-block;padding:1px 8px;border:1px solid var(--rule-strong);border-radius:2px;color:var(--ink-2);font-size:12px;line-height:1.7}
.status{display:inline-block;padding:1px 9px;border-radius:2px;font-size:12px;font-weight:600;line-height:1.7;white-space:nowrap}
.status-active{background:var(--accent-wash);color:var(--accent)}
.status-done{background:var(--tint);color:var(--muted)}

/* 扁平面板（兼容旧类名） */
.card-soft,.panel{background:var(--panel);border:1px solid var(--rule);border-radius:var(--radius)}

/* 表单 */
.form-label{display:block;margin:14px 0 6px;color:var(--ink);font-size:14px;font-weight:600}
.form-input{width:100%;min-height:42px;padding:9px 12px;border:1px solid var(--rule-strong);border-radius:var(--radius);background:var(--panel);color:var(--ink);font:inherit;font-size:14.5px;outline:none;transition:border-color .15s ease,box-shadow .15s ease}
.form-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(23,64,122,.14)}
.form-input::placeholder{color:#9aa1ab}
.form-input[readonly]{background:var(--tint);color:var(--muted)}
textarea.form-input{resize:vertical}
.form-message{min-height:22px;margin:10px 0 0;color:var(--muted);font-size:14px;line-height:1.6}
.form-message.is-error{color:var(--danger)}
.form-message.is-success{color:var(--ok);font-weight:600}
.form-helper{margin:6px 0 0;color:var(--muted);font-size:13px;line-height:1.55}

/* 5 · 首页 ---------------------------------------------------------------- */
.hero{padding:56px 0 0}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:64px;align-items:center}
.hero-en{margin:0 0 14px;color:var(--accent);font-family:var(--serif);font-size:16px;font-style:italic;letter-spacing:.02em;line-height:1.4}
.hero h1{font-size:40px;letter-spacing:.03em;line-height:1.25}
.hero-lead{margin-top:20px;max-width:40em;color:var(--ink-2);font-size:16.5px;line-height:1.9}
.hero-lead b{color:var(--ink);font-weight:600}
.hero-note{margin-top:14px;max-width:40em;color:var(--muted);font-size:14.5px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:26px}
.hero-fig{margin:0}
.hero-fig-frame{display:grid;place-items:center;padding:30px;border:1px solid var(--rule);background:var(--panel);aspect-ratio:4/3}
.hero-fig-frame img{width:100%;height:100%;object-fit:contain}
.hero-fig figcaption{margin-top:8px;color:var(--muted);font-family:var(--serif);font-size:13px;font-style:italic}

/* 数据带 */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:48px;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.stat{display:flex;align-items:baseline;gap:10px;padding:18px 20px;border-left:1px solid var(--rule-soft);color:var(--ink-2);transition:background .15s ease}
.stat:first-child{border-left:0;padding-left:0}
a.stat:hover{background:var(--tint)}
.stat strong{color:var(--accent);font-family:var(--serif);font-size:30px;font-weight:700;line-height:1;font-variant-numeric:lining-nums}
.stat span{font-size:14px;color:var(--muted)}

/* 研究方向（首页三栏） */
.topics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}
.topic-col{display:flex;flex-direction:column;gap:8px;padding:2px 28px 4px;border-left:1px solid var(--rule)}
.topic-col:first-child{padding-left:0;border-left:0}
.topic-col:last-child{padding-right:0}
.topic-no{color:var(--mark);font-family:var(--serif);font-size:15px;font-weight:700;letter-spacing:.08em}
.topic-col h3{font-size:21px}
.topic-col .topic-en{margin-top:-4px;color:var(--muted);font-family:var(--serif);font-size:13.5px;font-style:italic}
.topic-col p{color:var(--ink-2);font-size:14.5px;line-height:1.85}
.topic-col .text-link{align-self:flex-start;margin-top:auto;padding-top:6px;font-size:14px;text-decoration:none}
.topic-col .text-link::after{content:" →"}
.topic-col .text-link:hover{text-decoration:underline}

/* 图（视频/图片 + 图注） */
.figures{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
.figures-3{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.figure{margin:0;display:flex;flex-direction:column}
.figure-media{aspect-ratio:16/9;overflow:hidden;border:1px solid var(--rule);background:#e9e6dc}
.figure-media video,.figure-media img{width:100%;height:100%;object-fit:cover}
.figure-media.contain img{object-fit:contain;background:#fff}
.figure figcaption{margin-top:12px;font-size:14.5px;line-height:1.8}
.figure figcaption b{display:block;margin-bottom:2px;color:var(--ink);font-family:var(--serif);font-size:17px}
.figure .fig-no{margin-right:8px;color:var(--mark);font-family:var(--sans);font-size:12px;font-weight:600;letter-spacing:.06em}

/* 动态列表 */
.news-rows{border-top:1px solid var(--rule)}
.news-row{display:grid;grid-template-columns:96px 84px minmax(0,1fr);gap:16px;align-items:baseline;padding:13px 0;border-bottom:1px solid var(--rule-soft);transition:background .15s ease}
a.news-row:hover{background:var(--tint)}
.news-row time{color:var(--muted);font-family:var(--serif);font-size:14.5px;font-variant-numeric:lining-nums tabular-nums}
.news-row .kind{color:var(--accent);font-size:12.5px;font-weight:600;letter-spacing:.04em}
.news-row .title{color:var(--ink);font-size:15.5px;line-height:1.65}
a.news-row:hover .title{color:var(--accent)}

/* 负责人 */
.person{display:grid;grid-template-columns:220px minmax(0,1fr);gap:40px;align-items:start}
.person-photo{margin:0}
.person-photo img{width:100%;aspect-ratio:248/298;object-fit:cover;border:1px solid var(--rule);background:var(--panel)}
.person-name{display:flex;align-items:baseline;flex-wrap:wrap;gap:6px 14px}
.person-name h3{font-size:30px;letter-spacing:.06em}
.person-name span{color:var(--muted);font-size:15px}
.person-body .prose{margin-top:14px;font-size:15.5px}
.link-row{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:18px;padding-top:14px;border-top:1px solid var(--rule-soft);font-size:14px}
.link-row a{color:var(--accent)}
.link-row a::after{content:" ↗";font-size:12px}
.link-row a:hover{text-decoration:underline;text-underline-offset:3px}

/* 团队：相册 + 成员名录 */
.team-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:44px;align-items:start}
.gallery{margin:0}
.gallery-stage{position:relative;aspect-ratio:16/10;overflow:hidden;border:1px solid var(--rule);background:#e9e6dc}
.gallery-slide{position:absolute;inset:0;margin:0;opacity:0;transition:opacity .6s ease;pointer-events:none}
.gallery-slide.active{opacity:1;pointer-events:auto}
.gallery-slide img{width:100%;height:100%;object-fit:cover;cursor:zoom-in}
.gallery-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:10px}
.gallery-caption{min-width:0;color:var(--ink-2);font-size:14px;line-height:1.6}
.gallery-caption .fig-no{margin-right:8px;color:var(--mark);font-family:var(--sans);font-size:12px;font-weight:600;letter-spacing:.06em}
.gallery-ctrl{display:flex;align-items:center;gap:6px;flex:none;color:var(--muted);font-family:var(--serif);font-size:14px;font-variant-numeric:tabular-nums}
.gallery-ctrl button{display:grid;place-items:center;width:30px;height:30px;border:1px solid var(--rule-strong);border-radius:var(--radius);background:transparent;color:var(--ink);cursor:pointer;transition:border-color .15s ease,color .15s ease}
.gallery-ctrl button:hover{border-color:var(--accent);color:var(--accent)}
.gallery-ctrl .count{min-width:46px;text-align:center}
.gallery-dots{display:flex;gap:6px;margin-top:10px}
.gallery-dot{flex:1;height:3px;padding:0;border:0;background:var(--rule);cursor:pointer;transition:background .2s ease}
.gallery-dot.active{background:var(--accent)}

.roster h3{margin-bottom:4px;font-size:15px;font-family:var(--sans);letter-spacing:.04em}
.roster-group+.roster-group{margin-top:18px}
.roster-group h4{padding-bottom:6px;border-bottom:1px solid var(--ink);color:var(--muted);font-family:var(--sans);font-size:12.5px;font-weight:600;letter-spacing:.08em}
.roster li{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--rule-soft);font-size:15px;line-height:1.5}
.roster li b{color:var(--ink);font-weight:600;letter-spacing:.04em}
.roster li span{color:var(--muted);font-size:13px}

/* 合作入口条 */
.cta{display:flex;align-items:center;justify-content:space-between;gap:32px}
.cta h2{font-size:24px}
.cta p{margin-top:8px;max-width:60ch;color:var(--ink-2);font-size:15px}

/* 6 · 研究方向 ------------------------------------------------------------ */
.topic-row{display:grid;grid-template-columns:260px minmax(0,1fr);gap:48px;padding:30px 0;border-top:1px solid var(--rule)}
.topic-row:first-of-type{border-top:0;padding-top:4px}
.topic-row-head .topic-no{display:block;margin-bottom:6px}
.topic-row-head h2{font-size:26px}
.topic-row-head .topic-en{margin-top:4px;color:var(--muted);font-family:var(--serif);font-size:14.5px;font-style:italic}
.topic-row-body p{font-size:15.5px}
.topic-row-body .ours{margin-top:1em;padding-left:16px;border-left:2px solid var(--accent)}
.topic-row-body .ours b{display:block;margin-bottom:2px;color:var(--accent);font-size:13px;font-weight:600;letter-spacing:.08em}

/* 7 · 研究成果 ------------------------------------------------------------ */
.metric-row{display:flex;flex-wrap:wrap;gap:12px 40px;margin-top:22px}
.metric{display:flex;align-items:baseline;gap:10px;color:var(--muted);font-size:14px}
.metric strong{color:var(--accent);font-family:var(--serif);font-size:28px;line-height:1}
a.metric:hover span{color:var(--accent)}

.subnav{position:sticky;top:var(--header-h);z-index:40;background:var(--paper);border-bottom:1px solid var(--rule)}
.subnav .container{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none}
.subnav .container::-webkit-scrollbar{display:none}
.subnav a{position:relative;flex:none;padding:12px 14px;color:var(--ink-2);font-size:14px;white-space:nowrap}
.subnav a::after{content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .2s ease}
.subnav a:hover{color:var(--accent)}
.subnav a[aria-current="true"]{color:var(--accent);font-weight:600}
.subnav a[aria-current="true"]::after{transform:scaleX(1)}
.subnav .count{margin-left:6px;color:var(--muted);font-family:var(--serif);font-size:13px}

.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;margin:-6px 0 18px}
.segmented{display:inline-flex;border:1px solid var(--rule-strong);border-radius:var(--radius);overflow:hidden}
.segmented button{padding:6px 14px;border:0;border-right:1px solid var(--rule-strong);background:transparent;color:var(--ink-2);font:inherit;font-size:13.5px;cursor:pointer;transition:background .15s ease,color .15s ease}
.segmented button:last-child{border-right:0}
.segmented button:hover{background:var(--tint)}
.segmented button[aria-pressed="true"]{background:var(--accent);color:#fff}
.search-box{position:relative;flex:1 1 240px;max-width:340px}
.search-box input{width:100%;height:36px;padding:0 12px 0 34px;border:1px solid var(--rule-strong);border-radius:var(--radius);background:var(--panel);color:var(--ink);font:inherit;font-size:14px;outline:none}
.search-box input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(23,64,122,.14)}
.search-box svg{position:absolute;left:11px;top:50%;width:15px;height:15px;transform:translateY(-50%);color:var(--muted)}
.toolbar .result-count{margin-left:auto;color:var(--muted);font-size:13.5px}
.empty-note{padding:28px 0;color:var(--muted);text-align:center;border-top:1px solid var(--rule-soft)}

/* 项目表 */
.proj-list{border-top:1px solid var(--rule)}
.proj{display:grid;grid-template-columns:150px minmax(0,1fr) 56px;gap:20px;align-items:start;padding:16px 0;border-bottom:1px solid var(--rule-soft)}
.proj-period{color:var(--muted);font-family:var(--serif);font-size:14.5px;font-variant-numeric:lining-nums tabular-nums;line-height:1.9}
.proj h3{font-family:var(--sans);font-size:16px;font-weight:600;line-height:1.6}
.proj-desc{margin-top:2px;color:var(--ink-2);font-size:14.5px;line-height:1.75}
.proj-meta{margin-top:6px;color:var(--muted);font-size:13px;line-height:1.6}
.proj-meta code{font-family:var(--mono);font-size:12.5px}
.proj .status{justify-self:end;margin-top:3px}

/* 论文列表（按年份分组） */
.year-group{display:grid;grid-template-columns:96px minmax(0,1fr);gap:20px;border-top:1px solid var(--rule)}
.year-group:last-child{border-bottom:1px solid var(--rule)}
.year-group h3{position:sticky;top:calc(var(--header-h) + 56px);align-self:start;padding-top:18px;color:var(--accent);font-size:26px;line-height:1.2}
.pub-list{display:grid}
.pub{position:relative;padding:15px 0 15px;border-top:1px solid var(--rule-soft)}
.pub:first-child{border-top:0}
.pub-title{color:var(--ink);font-family:var(--sans);font-size:16px;font-weight:600;line-height:1.6}
.pub-title a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.pub-title .ext{margin-left:6px;color:var(--muted);font-size:13px;font-weight:400}
.pub-authors{margin-top:3px;color:var(--ink-2);font-size:14.5px;line-height:1.7}
.pub-authors b{color:var(--ink);font-weight:700}
.pub-venue{margin-top:1px;color:var(--muted);font-size:14px;line-height:1.7}
.pub-venue em{color:var(--ink-2);font-style:italic}
.pub-venue .venue{color:var(--ink-2)}
.pub-kind{display:inline-block;margin-right:8px;padding:0 6px;border:1px solid var(--rule-strong);border-radius:2px;color:var(--muted);font-size:11.5px;line-height:1.6;vertical-align:1px}
.legend{margin-top:14px;color:var(--muted);font-size:13px}

/* 专利与软著 */
.ip-list{border-top:1px solid var(--rule)}
.ip{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px 24px;padding:14px 0;border-bottom:1px solid var(--rule-soft)}
.ip h3{font-family:var(--sans);font-size:15.5px;font-weight:600;line-height:1.6}
.ip-meta{display:flex;flex-wrap:wrap;gap:4px 14px;grid-column:1/-1;color:var(--muted);font-size:13.5px}
.ip-meta span+span::before{content:"·";margin-right:14px;color:var(--rule-strong)}
.ip .status{align-self:start}

/* 8 · 新闻 ---------------------------------------------------------------- */
.year-block{display:grid;grid-template-columns:120px minmax(0,1fr);gap:24px;padding:0 0 12px;border-top:2px solid var(--ink);margin-bottom:36px}
.year-block>.year-label{position:sticky;top:calc(var(--header-h) + 56px);align-self:start;padding-top:16px;color:var(--ink);font-size:40px;line-height:1;font-variant-numeric:lining-nums}
.year-block>.year-label small{display:block;margin-top:8px;color:var(--muted);font-family:var(--sans);font-size:13px;font-weight:400;letter-spacing:.04em}
.news-list>li{display:grid;grid-template-columns:76px minmax(0,1fr);gap:8px 20px;padding:18px 0;border-top:1px solid var(--rule-soft)}
.news-list>li:first-child{border-top:0}
.news-kind{padding-top:3px;color:var(--accent);font-size:12.5px;font-weight:600;letter-spacing:.04em}
.news-title{color:var(--ink);font-size:17px;font-weight:600;line-height:1.65}
.news-title a{color:var(--accent);text-decoration:underline;text-decoration-color:rgba(23,64,122,.35);text-underline-offset:3px}
.news-title a:hover{text-decoration-color:var(--accent)}
.news-venue{font-style:italic}
.news-venue.cn{font-style:normal}
.news-meta{margin-top:4px;color:var(--ink-2);font-size:14.5px;line-height:1.8}
.news-meta time{margin-right:8px;color:var(--muted);font-family:var(--serif);font-weight:700}
.news-photos{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:14px}
.news-photos.single{grid-template-columns:minmax(0,1fr);max-width:420px}
.news-photos figure{margin:0}
.news-photos img{width:100%;aspect-ratio:4/3;object-fit:cover;border:1px solid var(--rule);cursor:zoom-in;transition:opacity .15s ease}
.news-photos.single img{aspect-ratio:auto;max-height:280px;object-fit:contain;background:var(--panel)}
.news-photos img:hover{opacity:.9}
.news-photos figcaption{margin-top:5px;color:var(--muted);font-size:12.5px;line-height:1.5}
.content-block{max-width:820px}
.content-block h2{margin:1.8em 0 .5em;padding-top:12px;border-top:1px solid var(--rule);font-size:22px}
.content-block h2:first-child{margin-top:0;border-top:0;padding-top:0}
.content-block p{white-space:pre-line}
.content-block ul{margin:.6em 0 0 1.2em;list-style:disc}
.content-block img{height:auto}

/* 9 · 招生与合作 ---------------------------------------------------------- */
.split{display:grid;grid-template-columns:300px minmax(0,1fr);gap:48px}
.split-aside h2{font-size:26px}
.split-aside .en{margin-top:4px;color:var(--muted);font-family:var(--serif);font-size:14.5px;font-style:italic}
.split-aside .lead{margin-top:16px;color:var(--ink-2);font-size:15px;line-height:1.85}
.items{border-top:1px solid var(--rule)}
.item{display:grid;grid-template-columns:56px minmax(0,1fr);gap:16px;padding:18px 0;border-bottom:1px solid var(--rule-soft)}
.item-no{color:var(--mark);font-family:var(--serif);font-size:15px;font-weight:700;letter-spacing:.06em;padding-top:2px}
.item h3{margin-bottom:4px;font-family:var(--sans);font-size:16.5px}
.item p{font-size:15px;color:var(--ink-2)}
.subhead{margin:30px 0 12px;color:var(--ink);font-family:var(--sans);font-size:13px;font-weight:600;letter-spacing:.1em}
.contact-line{margin-top:28px;padding:16px 20px;border:1px solid var(--rule);background:var(--panel);font-size:15px}
.contact-line a{color:var(--accent);font-weight:600;text-decoration:underline;text-underline-offset:3px}

/* 10 · 功能区 ------------------------------------------------------------- */
.tool-list{border-top:1px solid var(--rule)}
.tool{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;padding:26px 0;border-bottom:1px solid var(--rule)}
.tool h2{display:flex;align-items:center;gap:12px;font-size:22px}
.tool p{margin-top:8px;max-width:58ch;color:var(--ink-2);font-size:15px}
.tool .tag-list{margin-top:14px}

/* 11 · 项目演示 ----------------------------------------------------------- */
.demo-filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.demo-filter-btn{padding:5px 14px;border:1px solid var(--rule-strong);border-radius:2px;background:transparent;color:var(--ink-2);font:inherit;font-size:13.5px;cursor:pointer;transition:all .15s ease}
.demo-filter-btn:hover{border-color:var(--accent);color:var(--accent)}
.demo-filter-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}
.demo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:32px 28px}
.demo-card{display:flex;flex-direction:column;overflow:hidden;border:0;background:none;cursor:pointer}
.demo-card:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.demo-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;border:1px solid var(--rule);background:#e9e6dc}
.demo-thumb video,.demo-thumb img{width:100%;height:100%;object-fit:cover}
.demo-thumb-fallback{display:grid;place-items:center;width:100%;height:100%;background:var(--tint);color:var(--muted);font-size:34px}
.demo-play-btn{position:absolute;inset:0;display:grid;place-items:center;background:rgba(14,28,48,.18);transition:background .2s ease}
.demo-card:hover .demo-play-btn{background:rgba(14,28,48,.36)}
.demo-play-icon{display:grid;place-items:center;width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.94);transition:transform .2s ease}
.demo-card:hover .demo-play-icon{transform:scale(1.08)}
.demo-play-icon svg{width:18px;height:18px;margin-left:3px;fill:var(--accent);stroke:none}
.demo-body{padding:14px 0 0}
.demo-tags{display:flex;flex-wrap:wrap;gap:6px}
.demo-tag{display:inline-block;padding:0 7px;border:1px solid var(--rule-strong);border-radius:2px;color:var(--muted);font-size:12px;line-height:1.7}
.demo-body h3{margin:10px 0 4px;font-size:19px}
.demo-body p{color:var(--ink-2);font-size:14.5px;line-height:1.8}
.demo-body-footer{display:flex;align-items:center;justify-content:space-between;margin-top:10px;padding-top:8px;border-top:1px solid var(--rule-soft);font-size:13px}
.demo-watch-link{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600}
.demo-watch-link svg{width:14px;height:14px;stroke:var(--accent)}
.demo-source-badge{color:var(--muted)}
.demo-empty{grid-column:1/-1;display:grid;place-items:center;min-height:200px;padding:28px;border:1px dashed var(--rule-strong);color:var(--muted);text-align:center}

/* 12 · 灯箱与浮层 --------------------------------------------------------- */
.demo-lightbox,.lightbox{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;padding:24px;background:rgba(12,18,28,.86);opacity:0;pointer-events:none;transition:opacity .25s ease}
.demo-lightbox.open,.lightbox.open{opacity:1;pointer-events:auto}
.demo-lightbox-inner{position:relative;width:100%;max-width:960px;overflow:hidden;background:var(--panel);border-radius:var(--radius);transform:scale(.97);transition:transform .25s ease}
.demo-lightbox.open .demo-lightbox-inner{transform:none}
.demo-lightbox-video-wrap{position:relative;aspect-ratio:16/9;background:#000}
.demo-lightbox-video-wrap video,.demo-lightbox-video-wrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.demo-lightbox-info{padding:16px 22px 20px}
.demo-lightbox-info h2{padding-right:40px;margin:8px 0 4px;font-size:20px}
.demo-lightbox-info p{color:var(--ink-2);font-size:14.5px;line-height:1.75}
.demo-lightbox-close,.lightbox-close{position:absolute;top:12px;right:12px;z-index:5;display:grid;place-items:center;width:34px;height:34px;border:1px solid var(--rule-strong);border-radius:50%;background:rgba(255,255,255,.95);color:var(--ink);font-size:16px;line-height:1;cursor:pointer}
.demo-lightbox-close:hover,.lightbox-close:hover{color:var(--accent);border-color:var(--accent)}
.lightbox figure{position:relative;margin:0;max-width:min(1100px,100%)}
.lightbox img{max-width:100%;max-height:82vh;margin:0 auto;border:1px solid rgba(255,255,255,.2);background:#fff}
.lightbox figcaption{margin-top:10px;color:#d6dae0;font-size:14px;text-align:center}
.to-top{position:fixed;right:20px;bottom:24px;z-index:50;display:grid;place-items:center;width:40px;height:40px;border:1px solid var(--rule-strong);border-radius:var(--radius);background:var(--paper);color:var(--ink);font-size:18px;cursor:pointer;opacity:0;transform:translateY(8px);pointer-events:none;transition:opacity .2s ease,transform .2s ease,border-color .15s ease,color .15s ease}
.to-top.show{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{border-color:var(--accent);color:var(--accent)}

/* 13 · 页脚 --------------------------------------------------------------- */
.footer{flex:none;margin-top:56px;background:var(--accent-deep);color:#b9c6da;font-size:14px}
.footer a{color:#dbe4f2}
.footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr);gap:40px;padding:40px 0 28px}
.footer h4{margin-bottom:12px;color:#8fa4c4;font-family:var(--sans);font-size:12px;font-weight:600;letter-spacing:.14em}
.footer-brand b{display:block;color:#fff;font-family:var(--serif);font-size:18px;letter-spacing:.02em}
.footer-brand i{display:block;margin-top:2px;color:#8fa4c4;font-family:var(--serif);font-size:13px}
.footer-brand p{margin-top:12px;max-width:34em;font-size:13.5px;line-height:1.8}
.footer-links{display:grid;gap:6px}
.footer-grid>div:nth-child(2) .footer-links{grid-template-columns:repeat(2,max-content);column-gap:32px}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;padding:16px 0 20px;border-top:1px solid rgba(255,255,255,.14);color:#8fa4c4;font-size:12.5px}
.footer-bottom a{color:#8fa4c4}

/* 14 · 响应式 ------------------------------------------------------------- */
@media (max-width:1060px){
  .navlinks a{padding:0 9px}
  .hero-grid{grid-template-columns:minmax(0,1fr) 300px;gap:40px}
  .team-grid{gap:32px}
  .year-block{grid-template-columns:90px minmax(0,1fr);gap:16px}
}
@media (max-width:900px){
  :root{--header-h:58px}
  .navlinks{display:none}
  .hamburger{display:inline-flex}
  .mobile{display:block}
  .brand-en{display:none}
  .hero{padding-top:36px}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .hero-fig{display:none}
  .hero h1{font-size:32px}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--rule-soft)}
  .topics{grid-template-columns:1fr}
  .topic-col{padding:18px 0;border-left:0;border-top:1px solid var(--rule)}
  .topic-col:first-child{border-top:0;padding-top:0}
  .figures,.figures-3{grid-template-columns:1fr}
  .person{grid-template-columns:140px minmax(0,1fr);gap:24px}
  .team-grid{grid-template-columns:1fr}
  .topic-row{grid-template-columns:1fr;gap:12px}
  .split{grid-template-columns:1fr;gap:20px}
  .cta{flex-direction:column;align-items:flex-start;gap:16px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:640px){
  :root{--gutter:18px}
  body{font-size:15px}
  .section{padding:36px 0}
  .page-head{padding:34px 0 22px}
  .page-title{font-size:28px}
  .brand-cn{font-size:15.5px}
  .hero h1{font-size:27px}
  .hero-en{font-size:14px}
  .sec-head h2{font-size:21px}
  .news-row{grid-template-columns:78px minmax(0,1fr);gap:2px 12px}
  .news-row .kind{grid-column:2;order:3}
  .news-row .title{grid-column:2}
  .person{grid-template-columns:1fr}
  .person-photo{max-width:150px}
  .proj{grid-template-columns:1fr;gap:4px}
  .proj .status{justify-self:start;order:-1}
  .year-group{grid-template-columns:1fr;gap:0}
  .year-group h3{position:static;padding:14px 0 0;font-size:22px}
  .year-block{grid-template-columns:1fr;gap:0}
  .year-block>.year-label{position:static;font-size:30px}
  .news-list>li{grid-template-columns:1fr;gap:2px}
  .news-photos{grid-template-columns:1fr 1fr}
  .ip{grid-template-columns:1fr}
  .tool{grid-template-columns:1fr;gap:16px}
  .tool .btn-primary,.tool .btn-secondary{justify-self:start}
  .item{grid-template-columns:44px minmax(0,1fr);gap:10px}
  .demo-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-top:32px}
  .toolbar .result-count{margin-left:0;width:100%}
  .search-box{max-width:none}
  .to-top{right:14px;bottom:16px}
}

/* 15 · 打印 --------------------------------------------------------------- */
@media print{
  .topbar,.subnav,.footer,.to-top,.toolbar,.hamburger,.mobile,.hero-actions,.gallery-ctrl,.gallery-dots{display:none !important}
  body{background:#fff;color:#000;font-size:11pt}
  .js .reveal{opacity:1;transform:none}
  a[href^="http"]::after{content:" (" attr(href) ")";font-size:9pt;color:#555;word-break:break-all}
  .year-group h3,.year-block>.year-label{position:static}
}