/* ============================================================
 * 会议网站 · 公共样式
 * ============================================================ */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:#333;background:#f5f6f8;line-height:1.7;font-size:14px}
a{text-decoration:none;color:inherit}
img{max-width:100%}
.container{max-width:1200px;margin:0 auto}

/* ============ 导航 ============ */
.header{background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.06);position:sticky;top:0;z-index:100}
.header .container{display:flex;align-items:center;justify-content:space-between;height:64px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#0a4d8c;flex-shrink:0}
.logo .mark{width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,#0a4d8c,#1a8ac8);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;flex-shrink:0}
.nav{display:flex;list-style:none;flex-wrap:wrap}
.nav li a{display:block;padding:8px 14px;font-size:14px;color:#333;transition:.2s;border-bottom:2px solid transparent}
.nav li a:hover,.nav li a.on{color:#0a4d8c;border-bottom-color:#0a4d8c}

/* ============ Banner ============ */
.banner{position:relative;height:380px;overflow:hidden;background:linear-gradient(135deg,#0a4d8c,#1a8ac8)}
.banner.banner-img{height:auto;max-height:420px;background:#fff}
.banner.banner-img img{width:100%;height:auto;display:block;object-fit:cover;max-height:420px}
.banner img{width:100%;height:100%;object-fit:cover;opacity:.55}
.banner::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,77,140,.2) 0,rgba(7,56,107,.5) 100%)}
.banner.banner-img::after{display:none}
.banner .txt{position:absolute;z-index:2;left:0;right:0;top:50%;transform:translateY(-50%);text-align:center;color:#fff;padding:0 24px}
.banner .txt h1{font-size:40px;font-weight:800;letter-spacing:3px;text-shadow:0 2px 12px rgba(0,0,0,.3)}
.banner .txt .sub{font-size:16px;margin-top:14px;opacity:.95;letter-spacing:1px}
.banner .txt .date{margin-top:10px;font-size:14px;opacity:.85}

/* ============ 主体两栏 ============ */
.main{display:flex;gap:24px;padding:24px 0 50px;align-items:flex-start}
.main-left{flex:1;min-width:0}
.main-right{width:300px;flex-shrink:0}

/* 卡片 */
.card{background:#fff;border-radius:6px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.06);margin-bottom:24px}
.card .card-head{padding:14px 20px;border-bottom:1px solid #eee;display:flex;align-items:center;justify-content:space-between}
.card .card-head .t{font-size:17px;font-weight:700;color:#0a4d8c;position:relative;padding-left:14px}
.card .card-head .t::before{content:"";position:absolute;left:0;top:3px;bottom:3px;width:4px;background:linear-gradient(180deg,#c9a24b,#0a4d8c);border-radius:2px}
.card .card-head .more{font-size:12px;color:#999}
.card .card-head .more:hover{color:#0a4d8c}
.card .card-body{padding:20px}

/* 会议介绍 */
.intro-txt p{color:#444;text-indent:2em;font-size:14px;margin-bottom:12px;line-height:2}
.intro-media{margin-top:14px}

/* 主题报告人 */
.speakers-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.sp-item{text-align:center;padding:18px 10px;border:1px solid #eee;border-radius:6px;transition:.25s}
.sp-item:hover{box-shadow:0 6px 18px rgba(10,77,140,.12);transform:translateY(-3px);border-color:#c9a24b}
.sp-item .av{width:72px;height:72px;border-radius:50%;margin:0 auto 12px;background:linear-gradient(135deg,#0a4d8c,#1a8ac8);color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;cursor:pointer}
.sp-item .av-img{width:88px;height:88px;border-radius:50%;margin:0 auto 12px;object-fit:cover;cursor:pointer;border:3px solid #fff;box-shadow:0 4px 14px rgba(10,77,140,.25);display:block;transition:.25s}
.sp-item .av-img:hover{transform:scale(1.06)}
.sp-item .n{font-size:14px;font-weight:600;color:#333}
.sp-item .a{font-size:12px;color:#888;margin-top:6px;line-height:1.5}
.sp-item .sp-more{display:inline-block;margin-top:10px;font-size:12px;color:#0a4d8c;cursor:pointer;border:1px solid #0a4d8c;padding:3px 14px;border-radius:20px;transition:.2s}
.sp-item .sp-more:hover{background:#0a4d8c;color:#fff}

/* 报告人弹窗 */
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:999;display:flex;align-items:center;justify-content:center;padding:20px}
.modal-box{background:#fff;border-radius:12px;max-width:520px;width:100%;max-height:80vh;overflow:auto;position:relative;padding:30px;animation:modalIn .25s ease}
@keyframes modalIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
.modal-close{position:absolute;top:12px;right:16px;font-size:26px;color:#999;cursor:pointer;line-height:1}
.modal-close:hover{color:#c0392b}
.modal-box .m-head{display:flex;align-items:center;gap:20px;border-bottom:1px solid #eee;padding-bottom:18px;margin-bottom:18px}
.modal-box .m-av-img{width:90px;height:90px;border-radius:50%;object-fit:cover;border:3px solid #fff;box-shadow:0 4px 14px rgba(10,77,140,.25);flex-shrink:0}
.modal-box .m-av{width:90px;height:90px;border-radius:50%;background:linear-gradient(135deg,#0a4d8c,#1a8ac8);color:#fff;display:flex;align-items:center;justify-content:center;font-size:36px;font-weight:700;flex-shrink:0}
.modal-box .m-name{font-size:22px;font-weight:700;color:#0a4d8c}
.modal-box .m-aff{font-size:13px;color:#888;margin-top:6px;line-height:1.6}
.modal-box .m-intro{font-size:14px;color:#444;line-height:2;text-align:justify}
.modal-box .m-intro img{max-width:100%;border-radius:6px;margin:8px 0}
.modal-box .m-intro video{max-width:100%;border-radius:6px;margin:8px 0}
.modal-box .m-intro h3{color:#0a4d8c;margin:12px 0 6px}
.modal-box .m-intro a{color:#0a4d8c;text-decoration:underline}

/* 右侧边栏 */
.side-card{background:#fff;border-radius:6px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.06);margin-bottom:24px}
.side-card .hd{padding:12px 18px;background:#0a4d8c;color:#fff;font-size:15px;font-weight:700;letter-spacing:1px}
.side-card .bd{padding:16px 18px}
.time-row{display:flex;align-items:flex-start;gap:12px;padding:10px 0;border-bottom:1px dashed #eee}
.time-row:last-child{border:none}
.time-row .ic{font-size:18px;flex-shrink:0}
.time-row .lb{font-size:13px;color:#0a4d8c;font-weight:600}
.time-row .dv{font-size:12px;color:#888;margin-top:2px}
.dl-link{display:flex;align-items:center;gap:8px;padding:10px 0;border-bottom:1px dashed #eee;font-size:13px;color:#333;transition:.2s}
.dl-link:last-child{border:none}
.dl-link:hover{color:#0a4d8c;padding-left:6px}
.dl-link .fic{color:#c9a24b;flex-shrink:0}

/* 会议动态 */
.news-row{display:flex;align-items:center;gap:16px;padding:14px 4px;border-bottom:1px solid #f2f2f2;transition:.2s}
.news-row:hover{background:#fafbfd}
.news-row .d{flex-shrink:0;width:64px;text-align:center;border-right:2px solid #0a4d8c;padding-right:12px}
.news-row .d .dd{font-size:22px;font-weight:700;color:#0a4d8c;line-height:1}
.news-row .d .dm{font-size:11px;color:#999;margin-top:4px}
.news-row .tt{flex:1;font-size:14px;color:#333;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.news-row .tt:hover{color:#0a4d8c}
.news-row .src{font-size:11px;color:#bbb;flex-shrink:0}

/* 专题论坛 */
.forums-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.forum-item{border:1px solid #eee;border-radius:6px;padding:20px 18px;transition:.25s;background:#fff}
.forum-item:hover{box-shadow:0 6px 18px rgba(10,77,140,.12);border-color:#0a4d8c;transform:translateY(-3px)}
.forum-item .no{display:inline-block;background:#0a4d8c;color:#fff;font-size:12px;padding:2px 12px;border-radius:20px;margin-bottom:12px}
.forum-item h4{font-size:15px;color:#0a4d8c;font-weight:700;margin-bottom:8px}
.forum-item p{font-size:12px;color:#888;line-height:1.8}
.forum-item .host{font-size:12px;color:#c9a24b;margin-top:10px;font-weight:600}

/* 分论坛 */
.subforums{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.subforum-item{display:flex;align-items:center;gap:12px;border:1px solid #eee;border-radius:6px;padding:14px;transition:.2s;background:#fff}
.subforum-item:hover{border-color:#0a4d8c;background:#f7faff}
.subforum-item .ic{font-size:20px;flex-shrink:0}
.subforum-item .t{font-size:13px;color:#333;font-weight:600}
.subforum-item .d{font-size:12px;color:#999;margin-top:2px}

/* 下载中心 */
.dl-list{max-width:760px;margin:0 auto}
.dl-item{display:flex;align-items:center;gap:16px;padding:18px 20px;border:1px solid #eee;border-radius:6px;margin-bottom:14px;transition:.25s;background:#fff}
.dl-item:hover{border-color:#0a4d8c;box-shadow:0 6px 18px rgba(10,77,140,.1);transform:translateX(4px)}
.dl-item .fic{width:48px;height:48px;border-radius:10px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:22px;background:linear-gradient(135deg,#0a4d8c,#1a8ac8);color:#fff}
.dl-item .info{flex:1;min-width:0}
.dl-item .info .t{font-size:15px;font-weight:600;color:#333}
.dl-item .info .d{font-size:12px;color:#999;margin-top:4px}
.dl-item .btn{background:#0a4d8c;color:#fff;font-size:13px;padding:8px 22px;border-radius:6px;flex-shrink:0;transition:.2s}
.dl-item .btn:hover{background:#07386b}

/* 展览企业 */
.ex-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.ex-item{display:flex;align-items:center;justify-content:center;height:80px;border:1px solid #eee;border-radius:6px;font-size:13px;color:#555;font-weight:600;transition:.2s;background:#fff;padding:0 10px;text-align:center}
.ex-item:hover{border-color:#c9a24b;color:#0a4d8c;box-shadow:0 4px 14px rgba(0,0,0,.08)}
.ex-intro{background:#f7f9fc;border-left:3px solid #c9a24b;padding:16px 20px;font-size:13px;color:#555;border-radius:0 6px 6px 0;margin-bottom:22px}

/* 页面标题 */
.page-title{background:#fff;border-bottom:1px solid #e8e8e8;padding:18px 0;margin-bottom:24px}
.page-title .container{display:flex;align-items:center;gap:14px}
.page-title h1{font-size:22px;color:#0a4d8c;font-weight:700;border-left:4px solid #c9a24b;padding-left:12px}
.page-title .crumb{font-size:12px;color:#999}
.page-main{padding:0 0 50px}

/* 组织机构 */
.org-list{max-width:760px;margin:0 auto}
.org-item{display:flex;align-items:flex-start;padding:12px 0;border-bottom:1px dashed #eee}
.org-item:last-child{border:none}
.org-item .lb{flex-shrink:0;width:120px;font-weight:700;color:#0a4d8c;font-size:14px;text-align:right;padding-right:18px;border-right:2px solid #f0e2c4;margin-right:20px}
.org-item .vl{font-size:14px;color:#444;line-height:2}

/* 报告人表格 */
.tip{background:#fdf8ec;border:1px solid #f0e2c4;color:#8a6d3b;padding:10px 16px;border-radius:4px;font-size:13px;margin-bottom:20px}
table{width:100%;border-collapse:collapse;font-size:13px}
thead th{background:#f7f9fc;color:#0a4d8c;padding:10px 14px;font-weight:600;text-align:left;border-bottom:2px solid #0a4d8c}
tbody td{padding:10px 14px;border-bottom:1px solid #f0f0f0;color:#444;vertical-align:middle}
tbody tr:hover{background:#f7faff}
.star{color:#c9a24b;font-weight:700}

/* 会议日程 */
.sched-day{margin-bottom:26px}
.sched-day:last-child{margin-bottom:0}
.sched-day .day-hd{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.sched-day .day-hd .badge{background:#0a4d8c;color:#fff;font-size:14px;font-weight:700;padding:6px 16px;border-radius:4px}
.sched-day .day-hd .nm{font-size:16px;color:#333;font-weight:600}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.contact-card{border:1px solid #eee;border-radius:8px;padding:22px 24px;transition:.25s;background:#fff}
.contact-card:hover{border-color:#0a4d8c;box-shadow:0 6px 18px rgba(10,77,140,.1)}
.contact-card .h{font-size:15px;font-weight:700;color:#0a4d8c;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.contact-card .h .ic{width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,#0a4d8c,#1a8ac8);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;flex-shrink:0}
.contact-card .row{font-size:13px;color:#555;line-height:2}
.contact-card .row .lb{color:#0a4d8c;font-weight:600}
.contact-card .row a{color:#0a4d8c}
.map-ph{height:220px;border-radius:8px;border:1px solid #eee;background:#f7f9fc;display:flex;align-items:center;justify-content:center;color:#bbb;font-size:14px;margin-top:14px}

/* 页脚 */
.footer{background:#0a4d8c;color:rgba(255,255,255,.85);padding:36px 0 0;margin-top:20px}
.footer .cols{display:flex;gap:60px;padding-bottom:30px}
.footer .cols .b{flex:1}
.footer h5{color:#fff;font-size:15px;margin-bottom:14px}
.footer p,.footer li{font-size:13px;line-height:2;list-style:none;color:rgba(255,255,255,.7)}
.footer .bottom{border-top:1px solid rgba(255,255,255,.15);text-align:center;padding:14px 0;font-size:12px;color:rgba(255,255,255,.5)}

/* 响应式 */
@media(max-width:992px){
  .main{flex-direction:column}
  .main-right{width:100%}
  .speakers-grid{grid-template-columns:repeat(3,1fr)}
  .forums-grid{grid-template-columns:repeat(2,1fr)}
  .subforums{grid-template-columns:repeat(2,1fr)}
  .ex-grid{grid-template-columns:repeat(3,1fr)}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  .nav{display:none}
  .banner{height:260px}
  .banner .txt h1{font-size:26px}
  .speakers-grid,.forums-grid,.subforums,.ex-grid{grid-template-columns:1fr 1fr}
  .ex-grid{grid-template-columns:repeat(2,1fr)}
  .news-row{flex-wrap:wrap}
  .dl-item{flex-wrap:wrap}
  .dl-item .btn{width:100%;text-align:center}
}

/* ============================================================
 * 质感优化层（frontend-design 方法论）
 * 1. 字体升级  2. 滚动渐入  3. 微交互  4. 视觉细节
 * ============================================================ */

/* ---- 1. 字体与全局 ---- */
body{
  font-family:"Source Han Serif SC","Noto Serif SC","Songti SC","SimSun","PingFang SC","Microsoft YaHei",serif;
  color:#2c3440;
  background:#fafbfc;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,.card-head .t,.logo,.banner .txt h1,.btn,.forum-item h4,.sp-item .n,.news-row .tt,.dl-item .info .t{
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  letter-spacing:.02em;
}

/* ---- 2. 滚动渐入 ---- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}
.card,.side-card,.sp-item,.forum-item,.subforum-item,.ex-item,.news-row,.dl-item{
  transition:transform .35s cubic-bezier(.22,.61,.36,1),box-shadow .35s cubic-bezier(.22,.61,.36,1),border-color .35s ease,opacity .5s ease;
}

/* ---- 3. 微交互 ---- */
/* 卡片悬浮：细腻深阴影 + 上浮 */
.card:hover{box-shadow:0 12px 32px rgba(10,77,140,.10)}
.sp-item:hover{box-shadow:0 14px 32px rgba(10,77,140,.14);transform:translateY(-5px)}
.forum-item:hover{box-shadow:0 14px 32px rgba(10,77,140,.15);transform:translateY(-5px)}
.ex-item:hover{box-shadow:0 8px 24px rgba(10,77,140,.12);transform:translateY(-4px)}
/* 导航下划线滑动 */
.nav li a{position:relative}
.nav li a::after{content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;background:#c9a24b;transform:scaleX(0);transform-origin:center;transition:transform .3s cubic-bezier(.22,.61,.36,1)}
.nav li a:hover::after,.nav li a.on::after{transform:scaleX(1)}
/* 按钮微动 */
.btn,.upbtn,.dl-item .btn,.sp-more{transition:all .25s cubic-bezier(.22,.61,.36,1)}
/* 会议通知链接左移 */
.dl-link{transition:padding .25s ease,color .25s ease}
.dl-link:hover{padding-left:10px}

/* ---- 4. 视觉细节 ---- */
/* 背景微纹理：极浅的网格感 */
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:radial-gradient(rgba(10,77,140,.045) 1px,transparent 1px);
  background-size:26px 26px;
}
/* Banner 渐变增强 + 顶部深色压边 */
.banner{background:linear-gradient(135deg,#0a3d6e 0%,#0a4d8c 45%,#1a8ac8 100%)}
.banner::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 70% 20%,rgba(255,255,255,.10),transparent 55%);z-index:1}
/* Banner 标题入场 */
.banner .txt h1{animation:bannerUp .9s cubic-bezier(.22,.61,.36,1) both}
.banner .txt .sub{animation:bannerUp .9s .15s cubic-bezier(.22,.61,.36,1) both}
.banner .txt .date{animation:bannerUp .9s .3s cubic-bezier(.22,.61,.36,1) both}
@keyframes bannerUp{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:none}}
/* 板块标题金色装饰 */
.card .card-head{border-bottom:1px solid #eef0f3}
.card .card-head .t::before{box-shadow:0 1px 6px rgba(201,162,75,.4)}
/* 卡片圆角统一 + 更精致的边框 */
.card,.side-card{border:1px solid rgba(230,233,239,.9);border-radius:10px}
.sp-item,.forum-item,.subforum-item,.ex-item{border-radius:10px}
/* 图片头像描边更精致 */
.sp-item .av-img{border:3px solid #fff;outline:1px solid rgba(10,77,140,.15)}
/* 页脚顶部金色线 */
.footer{border-top:3px solid #c9a24b}
/* 选中色 */
::selection{background:rgba(201,162,75,.35)}

/* 降低动效偏好 */
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .banner .txt h1,.banner .txt .sub,.banner .txt .date{animation:none}
}

/* ============================================================
 * 报告人轮播（原站样式）
 * ============================================================ */
.spk-carousel{position:relative;display:flex;align-items:center;gap:8px}
.spk-track{flex:1;overflow-x:auto;scroll-behavior:smooth;scrollbar-width:none;-ms-overflow-style:none}
.spk-track::-webkit-scrollbar{display:none}
.spk-grid{display:grid;grid-template-columns:repeat(10,1fr);gap:14px;min-width:max-content;width:max-content;padding:4px}
.spk-grid .sp-item{width:200px}
@media(max-width:992px){.spk-grid{grid-template-columns:repeat(5,1fr)}.spk-grid .sp-item{width:170px}}
@media(max-width:640px){.spk-grid{grid-template-columns:repeat(1,1fr)}.spk-grid .sp-item{width:150px}}
.spk-nav{
  flex-shrink:0;width:38px;height:38px;border-radius:50%;
  background:#fff;border:1px solid #e0e3e8;color:#0a4d8c;
  font-size:20px;cursor:pointer;display:flex;align-items:center;justify-content:center;
  box-shadow:0 2px 8px rgba(0,0,0,.08);transition:.2s;
}
.spk-nav:hover{background:#0a4d8c;color:#fff;border-color:#0a4d8c}
.spk-prev{opacity:.3}