/* ICSED 2026 — Main site V2 */
:root {
  --primary-navy:#0F2B46; --primary-blue:#1E5AA8; --accent-green:#00A86B; --accent-gold:#D4A843;
  --ink:#1a1a2e; --text:#555; --line:#e8edf2; --soft:#f8fafc;
  --navy-900:#0F2B46; --blue-700:#1E5AA8; --red-600:#C42B38; --ease:cubic-bezier(.4,0,.2,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
:focus-visible{outline:3px solid rgba(0,168,107,.35);outline-offset:2px}
.container{width:min(1200px,calc(100% - 40px));margin:0 auto}
*{margin:0;padding:0;box-sizing:border-box}
body{margin:0;background:#fff;color:#1a1a2e;font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif}
.design-label,.module-annotation{background:#1a1a2e;color:#fff;padding:10px 40px;font-size:12px;display:flex;justify-content:space-between;align-items:center}
.design-label,.module-annotation span{color:#D4A843;font-weight:600}

/* 导航 */
.navbar{background:#fff;box-shadow:0 2px 12px rgba(0,0,0,.08);padding:0 50px;height:76px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100}
.nav-logo{display:flex;align-items:center;gap:12px;min-width:0;flex-shrink:0}
.nav-logo .logo-img{width:48px;height:48px;object-fit:contain;flex-shrink:0;display:block;border-radius:50%}
.nav-logo .logo-text{min-width:0;overflow:visible;flex-shrink:0}
.nav-logo .logo-text h1{font-size:16px;color:#0F2B46;font-weight:700;white-space:nowrap;line-height:1.3}
.nav-logo .logo-text p{font-size:11px;color:#666;letter-spacing:1px;white-space:nowrap}
.nav-menu{display:flex;gap:24px;list-style:none;align-items:center;flex-wrap:nowrap;white-space:nowrap}
.nav-menu a{text-decoration:none;color:#333;font-size:14px;font-weight:500}
.nav-menu a:hover,.nav-menu a.active{color:#1E5AA8}
.nav-menu a.ei-entry{background:linear-gradient(135deg,#00A86B,#00c07d);color:#fff;padding:8px 18px;border-radius:6px;font-weight:600}
.nav-right{display:flex;gap:10px}
.lang-switch{display:flex;border:1px solid #ddd;border-radius:6px;overflow:hidden}
.lang-switch button{padding:5px 12px;border:none;background:#fff;font-size:12px;cursor:pointer}
.lang-switch button.active{background:#0F2B46;color:#fff}

/* Hero */
.hero{background:linear-gradient(135deg,#0A1F38 0%,#0F2B46 40%,#15395E 70%,#1A4A7A 100%);color:#fff;padding:70px 50px 90px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-80px;right:-80px;width:450px;height:450px;border-radius:50%;background:radial-gradient(circle,rgba(0,168,107,.15) 0%,transparent 70%)}
.hero::after{content:'';position:absolute;bottom:-120px;left:150px;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(30,90,168,.2) 0%,transparent 70%)}
.hero-badge{display:inline-block;background:rgba(0,168,107,.2);border:1px solid #00A86B;color:#00E5A0;padding:5px 16px;border-radius:18px;font-size:12px;font-weight:600;margin-bottom:20px;position:relative;z-index:1}
.hero h1{font-size:44px;font-weight:800;line-height:1.2;margin-bottom:10px;position:relative;z-index:1}
.hero .en-name{font-size:18px;color:rgba(255,255,255,.6);margin-bottom:14px;position:relative;z-index:1}
.hero .subtitle{font-size:24px;color:#D4A843;font-weight:600;margin-bottom:28px;position:relative;z-index:1}
.hero-meta{display:flex;gap:32px;margin-bottom:24px;position:relative;z-index:1;flex-wrap:wrap}
.hero-meta-item{display:flex;align-items:center;gap:8px;font-size:15px}
.hero-meta-item .icon{width:22px;height:22px;background:rgba(255,255,255,.15);border-radius:5px;display:flex;align-items:center;justify-content:center;font-size:12px}
.hero-organizers{font-size:14px;color:rgba(255,255,255,.75);margin-bottom:32px;position:relative;z-index:1;line-height:1.8}
.hero-organizers strong{color:#fff}
.hero-cta{display:flex;gap:14px;position:relative;z-index:1}
.hero.has-banner{position:relative}
.hero-banners{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero-banner{position:absolute;inset:0;background-size:cover;background-position:center;background-repeat:no-repeat;opacity:0;transition:opacity .8s ease;z-index:0}
.hero-banner.is-active,.hero-banners--single .hero-banner{opacity:1}
.hero-banner::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,31,56,.72) 0%,rgba(15,43,70,.66) 45%,rgba(21,57,94,.62) 100%)}
.hero.has-banner > *:not(.hero-banners){position:relative;z-index:1}
.btn{padding:13px 28px;border-radius:8px;font-size:15px;font-weight:600;text-decoration:none;display:inline-flex;align-items:center;gap:8px;border:none;cursor:pointer}
.btn-primary{background:#00A86B;color:#fff}
.btn-secondary{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.3)}
.btn-gold{background:#D4A843;color:#0F2B46}
.btn-outline{background:transparent;color:#fff;border:2px solid #fff}

/* 通用区块 */
.section{padding:64px 50px}
.section-header{text-align:center;margin-bottom:44px}
.section-header .tag{display:inline-block;color:#00A86B;font-size:12px;font-weight:600;letter-spacing:3px;margin-bottom:10px}
.section-header h2{font-size:32px;color:#0F2B46;font-weight:800;margin-bottom:12px}
.section-header .desc{font-size:15px;color:#666;max-width:680px;margin:0 auto;line-height:1.8}
.section-header .line{width:50px;height:3px;background:linear-gradient(90deg,#00A86B,#D4A843);margin:14px auto 0;border-radius:2px}

/* 人群导航（核心新增） */
.audience-nav{background:#f8fafc}
.audience-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1200px;margin:0 auto}
.audience-card{background:#fff;border-radius:16px;padding:36px 28px;box-shadow:0 4px 20px rgba(0,0,0,.06);border-top:4px solid #ddd;transition:all .3s;cursor:pointer;position:relative;overflow:hidden}
.audience-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,0,0,.12)}
.audience-card.type-attend{border-top-color:#1E5AA8}
.audience-card.type-submit{border-top-color:#00A86B}
.audience-card.type-both{border-top-color:#D4A843}
.audience-card .icon{width:64px;height:64px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:32px;margin-bottom:20px}
.audience-card.type-attend .icon{background:linear-gradient(135deg,#e8f0fb,#d1e4f7)}
.audience-card.type-submit .icon{background:linear-gradient(135deg,#e8f5ef,#d1f0e0)}
.audience-card.type-both .icon{background:linear-gradient(135deg,#fdf6e8,#fbedcc)}
.audience-card h3{font-size:20px;color:#0F2B46;margin-bottom:10px;font-weight:700}
.audience-card .sub{font-size:13px;color:#888;margin-bottom:16px}
.audience-card ul{list-style:none;margin-bottom:20px}
.audience-card li{font-size:13px;color:#555;padding:5px 0;display:flex;align-items:flex-start;gap:8px}
.audience-card li::before{content:'✓';color:#00A86B;font-weight:700;flex-shrink:0}
.audience-card .action{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;text-decoration:none}
.audience-card.type-attend .action{color:#1E5AA8}
.audience-card.type-submit .action{color:#00A86B}
.audience-card.type-both .action{color:#D4A843}
.audience-card .badge{position:absolute;top:16px;right:16px;background:#00A86B;color:#fff;font-size:11px;padding:3px 10px;border-radius:10px;font-weight:600}

/* 分论坛矩阵 */
.forum-matrix{background:#fff}
.forum-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:1200px;margin:0 auto}
.forum-card{background:#f8fafc;border:1px solid #e8edf2;border-radius:14px;padding:28px;transition:all .3s;position:relative}
.forum-card:hover{border-color:#1E5AA8;box-shadow:0 8px 24px rgba(30,90,168,.1)}
.forum-card.ei-forum{background:linear-gradient(135deg,#f0faf5,#fff);border:2px solid #00A86B}
.forum-ei-badge{position:absolute;top:-1px;right:20px;background:#00A86B;color:#fff;font-size:11px;padding:4px 12px;border-radius:0 0 8px 8px;font-weight:600}
.forum-card .forum-num{font-size:12px;color:#999;font-weight:600;letter-spacing:2px;margin-bottom:10px}
.forum-card.ei-forum .forum-num{color:#00A86B}
.forum-card h3{font-size:17px;color:#0F2B46;margin-bottom:8px;font-weight:700}
.forum-card .en{font-size:12px;color:#999;margin-bottom:14px}
.forum-card p{font-size:13px;color:#666;line-height:1.7;margin-bottom:14px}
.forum-card .tags{display:flex;flex-wrap:wrap;gap:6px}
.forum-card .tag{background:#e8edf2;color:#555;padding:3px 10px;border-radius:10px;font-size:11px}
.forum-card.ei-forum .tag{background:#e0f5eb;color:#00A86B}
.forum-card .enter{display:inline-flex;align-items:center;gap:4px;font-size:13px;color:#1E5AA8;text-decoration:none;font-weight:600;margin-top:12px}
.forum-card.ei-forum .enter{color:#00A86B}

/* 大会简介 */
.about{background:#f8fafc}
.about-content{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;max-width:1100px;margin:0 auto}
.about-text p{font-size:15px;line-height:2;color:#444;margin-bottom:16px;text-indent:2em}
.about-text .highlight-box{background:#fff;border-left:4px solid #00A86B;padding:18px 22px;border-radius:0 8px 8px 0;margin-top:20px;box-shadow:0 4px 12px rgba(0,0,0,.05)}
.about-text .highlight-box strong{color:#0F2B46;font-size:14px}
.about-visual .main-card{background:linear-gradient(135deg,#0F2B46,#1A4A7A);border-radius:16px;padding:36px;color:#fff}
.about-visual .stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:20px}
.about-visual .stat{text-align:center;padding:18px;background:rgba(255,255,255,.08);border-radius:10px}
.about-visual .stat .num{font-size:28px;font-weight:800;color:#D4A843}
.about-visual .stat .label{font-size:12px;color:rgba(255,255,255,.7);margin-top:4px}

/* 大会亮点 */
.highlights{background:#fff}
.highlight-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:1200px;margin:0 auto}
.highlight-card{background:#fff;border:1px solid #e8edf2;border-radius:14px;padding:28px 20px;transition:all .3s}
.highlight-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(15,43,70,.1);border-color:#00A86B}
.highlight-card .icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px;background:linear-gradient(135deg,#e8f5ef,#d1f0e0)}
.highlight-card h3{font-size:16px;color:#0F2B46;margin-bottom:8px;font-weight:700}
.highlight-card p{font-size:13px;color:#666;line-height:1.7}

/* 重要日期（仅首页/日期页 .dates，与议程页隔离） */
.dates{background:#f8fafc}
.dates .timeline{max-width:900px;margin:0 auto;position:relative}
.dates .timeline::before{content:'';position:absolute;left:50%;top:0;bottom:0;width:3px;background:linear-gradient(180deg,#00A86B,#1E5AA8,#D4A843);transform:translateX(-50%)}
.dates .timeline-item{display:flex;align-items:center;margin-bottom:28px;position:relative}
.dates .timeline-item:nth-child(odd){flex-direction:row}
.dates .timeline-item:nth-child(even){flex-direction:row-reverse}
.dates .timeline-item .content{width:44%;background:#fff;border-radius:10px;padding:20px;box-shadow:0 4px 12px rgba(0,0,0,.06)}
.dates .timeline-item:nth-child(odd) .content{text-align:right}
.dates .timeline-item .dot{position:absolute;left:50%;transform:translateX(-50%);width:16px;height:16px;background:#fff;border:3px solid #00A86B;border-radius:50%;z-index:1}
.dates .timeline-item .date{font-size:18px;font-weight:800;color:#0F2B46;margin-bottom:4px}
.dates .timeline-item .title{font-size:14px;color:#333;font-weight:600}
.dates .timeline-item .note{font-size:11px;color:#999;margin-top:4px}

/* 主题板块 */
.topics{background:#fff}
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:1200px;margin:0 auto}
.topic-card{background:#f8fafc;border:1px solid #e8edf2;border-radius:14px;padding:26px;transition:all .3s}
.topic-card:hover{border-color:#1E5AA8;box-shadow:0 6px 20px rgba(30,90,168,.08)}
.topic-card .num{font-size:12px;color:#00A86B;font-weight:700;letter-spacing:2px;margin-bottom:10px}
.topic-card h3{font-size:16px;color:#0F2B46;margin-bottom:10px;font-weight:700}
.topic-card p{font-size:13px;color:#666;line-height:1.7}
.topic-card .tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.topic-card .tag{background:#e8f0fb;color:#1E5AA8;padding:3px 10px;border-radius:10px;font-size:11px}

/* 学术委员会 */
.committee{background:#f8fafc}
.committee-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:1200px;margin:0 auto}
.committee-card{background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 4px 12px rgba(0,0,0,.05);text-align:center}
.committee-card .avatar{width:100%;height:220px;background:linear-gradient(135deg,#0F2B46,#1A4A7A);display:flex;align-items:center;justify-content:center;font-size:52px;color:rgba(255,255,255,.3);font-weight:800;overflow:hidden}
.committee-card .avatar img{width:100%;height:100%;object-fit:cover;object-position:center top;display:block}
.committee-card .info{padding:18px}
.committee-card .name{font-size:16px;color:#0F2B46;font-weight:700;margin-bottom:4px}
.committee-card .title{font-size:12px;color:#00A86B;font-weight:600;margin-bottom:6px}
.committee-card .affil{font-size:12px;color:#888}

/* 往期会议走马灯 */
.past-conferences{background:#fff;padding-bottom:48px;overflow:hidden}
.past-marquee{overflow:hidden;margin-top:8px;mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.past-marquee-track{display:flex;gap:16px;width:max-content;animation:past-scroll 42s linear infinite}
.past-marquee.is-paused .past-marquee-track{animation-play-state:paused}
.past-marquee-item{margin:0;flex:0 0 auto}
.past-marquee-item img{display:block;height:200px;width:auto;max-width:360px;object-fit:cover;border-radius:14px;box-shadow:0 8px 22px rgba(15,43,70,.12)}
.past-marquee-item a{display:block}
.past-cta{text-align:center;margin-top:28px}
.past-cta .btn{background:#0F2B46;color:#fff;border:0}
.past-cta .btn:hover{background:#1E5AA8}

@keyframes past-scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.past-marquee-track{animation:none}}

/* 页脚 */
.footer{background:#0A1F38;color:rgba(255,255,255,.6);padding:50px 50px 24px}
.footer-content{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:32px}
.footer-brand h3{color:#fff;font-size:17px;margin-bottom:10px}
.footer-brand p{font-size:13px;line-height:1.8}
.footer-col h4{color:#fff;font-size:14px;margin-bottom:14px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px}
.footer-col a{color:rgba(255,255,255,.5);text-decoration:none;font-size:13px}
.footer-col a:hover{color:#00A86B}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:12px;color:rgba(255,255,255,.35)}

.module-annotation{background:#fffbe6;border:1px dashed #D4A843;padding:7px 14px;font-size:11px;color:#8a6d00;margin:0 50px;border-radius:5px;display:flex;align-items:center;gap:6px}
.module-annotation::before{content:'📌'}

/* --- Inner pages & CMS --- */
.skip-link{position:fixed;left:14px;top:-60px;z-index:1000;padding:9px 14px;color:#fff;background:#00A86B;border-radius:6px}
.skip-link:focus{top:12px}
.utility{min-height:34px;color:rgba(255,255,255,.86);background:#0A1F38;font-size:11px}
.utility-inner{min-height:34px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.utility-left,.utility-right{display:flex;align-items:center;gap:18px}
.utility-dot{width:6px;height:6px;border-radius:50%;background:#D4A843}
.utility a:hover{color:#fff}
.language{display:inline-flex;border:1px solid #ddd;border-radius:6px;overflow:hidden}
.language a,.language button{padding:5px 12px;border:none;background:#fff;font-size:12px;cursor:pointer;color:#333}
.language a.active,.language button.active{background:#0F2B46;color:#fff}
.site-header{position:sticky;top:0;z-index:100;background:#fff;box-shadow:0 2px 12px rgba(0,0,0,.08)}
.header-main{display:flex;align-items:center;justify-content:space-between;min-height:76px;gap:16px;position:relative;flex-wrap:nowrap}
.brand,.header-main .nav-logo{min-width:0;flex-shrink:0}
.nav-logo .logo-img,.brand .logo-img{width:48px;height:48px;object-fit:contain;flex-shrink:0;display:block;border-radius:50%}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.footer-logo .logo-img{width:40px;height:40px;object-fit:contain;border-radius:50%;background:#fff;flex-shrink:0}
.nav-logo .logo-text,.brand .logo-text{min-width:0;overflow:visible;flex-shrink:0}
.nav-logo .logo-text h1,.nav-logo .logo-text p,.brand .logo-text h1,.brand .logo-text p{white-space:nowrap}
html[lang="en"] .nav-logo .logo-text h1,html[lang="en"] .brand .logo-text h1{font-size:14px}
html[lang="en"] .nav-logo .logo-text p{font-size:9px;letter-spacing:.2px}
.header-tools{display:flex;align-items:center;gap:10px;flex-shrink:0;margin-left:8px}
.header-lang{display:none}
.nav-mobile-lang{display:none}
.menu-toggle{display:none}
.main-nav{display:flex;align-items:center;gap:20px;flex:1 1 auto;min-width:0;justify-content:flex-end}
.nav-overflow-host{display:flex;align-items:center;gap:6px;flex:1 1 auto;min-width:0;max-width:100%;justify-content:flex-end;overflow:visible}
.ei-header-bar .nav-overflow-host{flex:1 1 auto;min-width:0;margin:0 12px}
.nav-list{display:flex;gap:24px;list-style:none;align-items:center;margin:0;padding:0;flex-wrap:nowrap;white-space:nowrap}
.nav-list > li,.nav-list > .nav-item{flex-shrink:0;white-space:nowrap}
.nav-overflow{position:relative;flex-shrink:0}
.nav-overflow[hidden]{display:none!important}
.nav-overflow-toggle{background:#f0f4f8;border:1px solid #dfe4ea;border-radius:8px;color:#0F2B46;cursor:pointer;font-size:18px;font-weight:700;line-height:1;min-width:36px;height:36px;padding:0 10px}
.nav-overflow-toggle:hover,.nav-overflow.open .nav-overflow-toggle{background:#0F2B46;color:#fff;border-color:#0F2B46}
.nav-overflow-menu{display:none;position:absolute;top:calc(100% + 6px);right:0;background:#fff;border:1px solid #e8edf2;border-radius:8px;padding:8px 0;min-width:200px;box-shadow:0 8px 24px rgba(0,0,0,.1);list-style:none;margin:0;z-index:60}
.nav-overflow.open .nav-overflow-menu{display:block}
.nav-overflow-menu a{display:block;padding:8px 16px;font-size:13px;color:#333;text-decoration:none;white-space:nowrap}
.nav-overflow-menu a:hover,.nav-overflow-menu a.active{color:#1E5AA8}
.nav-overflow-menu a.ei-entry{background:transparent;color:#00A86B;font-weight:600}
.nav-item{position:relative}
.nav-parent{background:none;border:none;font:inherit;cursor:pointer;color:#333;font-size:14px;font-weight:500}
.dropdown{display:none;position:absolute;top:100%;left:0;background:#fff;border:1px solid #e8edf2;border-radius:8px;padding:8px 0;min-width:180px;box-shadow:0 8px 24px rgba(0,0,0,.08);list-style:none;margin:0;z-index:50}
.nav-item.open .dropdown{display:block}
.dropdown a{display:block;padding:8px 16px;font-size:13px}
.dropdown a:hover,.nav-list a:hover,.nav-list a.active{color:#1E5AA8}
.header-register,.nav-menu a.ei-entry{background:linear-gradient(135deg,#00A86B,#00c07d);color:#fff;padding:8px 18px;border-radius:6px;font-weight:600;font-size:14px;white-space:nowrap}
.page-shell{padding:48px 0 64px}
.prose,.ei-prose,.page-shell .prose{max-width:900px}

/* 往期会议独立页 */
.tpl-gallery-full{background:linear-gradient(180deg,#f5f8fb 0%,#fff 42%);padding:28px 0 80px}
.gallery-stage{max-width:1200px;margin:0 auto}
.gallery-page-lead{text-align:center;font-size:15px;color:#666;max-width:680px;margin:0 auto 28px;line-height:1.85}
.gallery-empty,.media-cat-empty{text-align:center;color:#888;font-size:14px;padding:36px 16px}
.media-cat-tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:0 0 28px}
.media-cat-tab{border:1px solid #e8edf2;background:#fff;color:#555;padding:8px 16px;border-radius:999px;font-size:13px;font-weight:600;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease}
.media-cat-tab:hover{border-color:#1E5AA8;color:#1E5AA8}
.media-cat-tab.is-active,.media-cat-tab[aria-selected="true"]{background:#0F2B46;color:#fff;border-color:#0F2B46;box-shadow:0 6px 16px rgba(15,43,70,.18)}
.gallery-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.gallery-tile{position:relative;display:block;width:100%;padding:0;border:0;background:#fff;border-radius:16px;overflow:hidden;cursor:pointer;text-align:left;box-shadow:0 8px 24px rgba(15,43,70,.08);transition:transform .25s ease,box-shadow .25s ease}
.gallery-tile:hover{transform:translateY(-4px);box-shadow:0 16px 32px rgba(15,43,70,.14)}
.gallery-tile[hidden]{display:none!important}
.gallery-tile-media{display:block;aspect-ratio:4/3;overflow:hidden;background:#0F2B46}
.gallery-tile-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.gallery-tile:hover .gallery-tile-media img{transform:scale(1.06)}
.gallery-tile-cap{display:block;padding:12px 14px 14px;font-size:14px;font-weight:600;color:#0F2B46;line-height:1.45}
.lightbox{position:fixed;inset:0;z-index:5000;display:none;place-items:center;background:rgba(7,26,55,.9);padding:24px}
.lightbox.is-open{display:grid}
.lightbox-dialog{position:relative;width:min(1100px,100%);max-height:90vh;display:grid;place-items:center}
.lightbox-dialog img{max-width:100%;max-height:78vh;object-fit:contain;border-radius:12px;box-shadow:0 20px 50px rgba(0,0,0,.35)}
.lightbox-caption{display:none}
.lightbox-close,.lightbox-nav{position:absolute;border:0;background:rgba(255,255,255,.12);color:#fff;cursor:pointer;border-radius:50%;display:grid;place-items:center;line-height:1}
.lightbox-close{top:-8px;right:-8px;width:40px;height:40px;font-size:28px}
.lightbox-nav{top:50%;transform:translateY(-50%);width:44px;height:44px;font-size:32px}
.lightbox-prev{left:-8px}
.lightbox-next{right:-8px}
.lightbox-close:hover,.lightbox-nav:hover{background:#00A86B}
@media (max-width:900px){
  .gallery-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .lightbox-prev{left:0}
  .lightbox-next{right:0}
}
@media (max-width:600px){
  .gallery-grid{grid-template-columns:1fr}
  .gallery-tile-media{aspect-ratio:16/10}
}
.prose p,.ei-prose p{font-size:15px;line-height:2;color:#444}
.form-card{background:#fff;border:1px solid #e8edf2;border-radius:14px;padding:28px;box-shadow:0 4px 16px rgba(0,0,0,.06)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-grid .field.full{grid-column:1/-1}
.field label{display:block;font-size:13px;font-weight:600;color:#0F2B46;margin-bottom:6px}
.field input:not([type="checkbox"]):not([type="radio"]),.field select,.field textarea{width:100%;padding:10px 12px;border:1px solid #dfe4ea;border-radius:8px;font-size:14px}
.field input[type="checkbox"],.field input[type="radio"]{width:auto;height:auto;padding:0;margin:0;border:none;border-radius:0;flex-shrink:0}
.field textarea{min-height:120px;resize:vertical}
.form-actions{margin-top:12px;grid-column:1/-1}
.form-success{display:none;padding:12px 16px;background:#e8f5ef;border-radius:8px;color:#0a3d2e;margin-bottom:16px}
.form-success.is-visible{display:block}
.error{color:#c42b38;font-size:12px;margin-top:4px;display:block}
.consent-row{grid-column:1/-1;min-width:0}
.field label.consent,.consent{display:flex;gap:8px;align-items:center;font-size:13px;font-weight:500;line-height:1.45;margin-bottom:0;white-space:normal;flex-wrap:nowrap;max-width:100%}
.consent > span{white-space:normal;min-width:0;flex:1 1 auto;line-height:1.45}
.consent > span > span{white-space:normal}
.form-card [type="submit"]::after,.form-card .btn-submit::after,.form-card .form-actions button::after{content:none!important}
.upload-progress{margin-top:8px}
.upload-progress-track{height:6px;background:#e8edf2;border-radius:99px;overflow:hidden}
.upload-progress-fill{display:block;height:100%;width:0;background:#00A86B;transition:width .2s ease}
.upload-progress.is-failed .upload-progress-fill{background:#c42b38}
.upload-progress.is-complete .upload-progress-fill{background:#00A86B}
.upload-progress-status{display:block;margin-top:4px;font-size:12px;color:#666}
.contact-stage{display:grid;grid-template-columns:1fr 1.2fr;gap:32px;align-items:start}
.contact-stack{display:flex;flex-direction:column;gap:12px}
.contact-item{background:#fff;border:1px solid #e8edf2;border-radius:12px;padding:16px 18px;box-shadow:0 2px 10px rgba(15,43,70,.04)}
.contact-item-label{display:block;font-size:12px;font-weight:600;letter-spacing:.04em;color:#7a8794;margin-bottom:6px}
.contact-item-value{display:block;font-size:15px;font-weight:700;color:#0F2B46;line-height:1.55;word-break:break-word}
.contact-item.is-muted .contact-item-value{font-weight:500;color:#9aa5b1}
.contact-box{background:#f8fafc;border-radius:12px;padding:18px;border:1px solid #e8edf2}
@media (max-width:900px){.form-grid,.contact-stage{grid-template-columns:1fr}}
.faq-item.open .faq-a{display:block}
body.menu-open{overflow:hidden}
.brand{display:inline-flex;align-items:center;gap:12px;min-width:0;flex-shrink:0}
.brand-mark .logo-img{width:48px;height:48px;object-fit:contain;border-radius:50%}

/* V2 main-site inner pages (navy). EI ei.css loads after and keeps green .page-header. */
.page-header{background:linear-gradient(135deg,#0A1F38 0%,#0F2B46 55%,#15395E 100%);color:#fff;padding:50px 50px 60px;position:relative;overflow:hidden}
.page-header::before{content:'';position:absolute;top:-40px;right:-40px;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(0,168,107,.18) 0%,transparent 70%)}
.page-header h1{font-size:34px;font-weight:800;margin-bottom:8px;position:relative;z-index:1}
.page-header .en{font-size:16px;color:rgba(255,255,255,.6);margin-bottom:16px;position:relative;z-index:1}
.page-header .desc{font-size:14px;color:rgba(255,255,255,.8);max-width:700px;line-height:1.8;position:relative;z-index:1}
.page-header .quick-info{display:flex;gap:24px;margin-top:24px;position:relative;z-index:1;flex-wrap:wrap}
.page-header .qi{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:8px;padding:10px 18px;font-size:13px}
.page-header .qi strong{color:#D4A843}
.content-wrap{max-width:1100px;margin:0 auto;padding:50px}
.content-block{margin-bottom:44px}
.content-block h2{font-size:24px;color:#0F2B46;font-weight:800;margin-bottom:16px;padding-left:14px;border-left:4px solid #1E5AA8}
.content-block h3{font-size:17px;color:#0F2B46;font-weight:700;margin:20px 0 10px}
.content-block p{font-size:14px;line-height:2;color:#444;margin-bottom:12px}
.content-block ul,.content-block ol{margin:12px 0 12px 24px}
.content-block li{font-size:14px;line-height:1.9;color:#444;margin-bottom:6px}
.page-banner img{width:100%;border-radius:12px}

/* V2 inner page header */
.page-hero{background:linear-gradient(135deg,#0A1F38 0%,#0F2B46 55%,#15395E 100%);color:#fff;padding:40px 50px 44px;position:relative;overflow:hidden}
.page-hero::before{content:'';position:absolute;top:-60px;right:-40px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(0,168,107,.18) 0%,transparent 70%)}
.page-hero-inner{position:relative;z-index:1}
.page-hero h1{font-size:28px;font-weight:800;margin:0 0 10px;line-height:1.3}
.page-hero .breadcrumb{background:none;border:0;padding:0;color:rgba(255,255,255,.72);font-size:13px}
.page-hero .breadcrumb a{color:#00E5A0}
.page-hero .breadcrumb span{margin:0 8px;color:rgba(255,255,255,.4)}
.btn-navy,.btn-red{background:#00A86B;color:#fff;border:none}
.btn-navy:hover,.btn-red:hover,.btn-primary:hover{filter:brightness(1.05)}
.tpl-head{margin-bottom:28px}
.tpl-head h2{font-size:24px;color:#0F2B46;margin-bottom:8px}
.tpl-head p{color:#666;line-height:1.8}
.tpl-related{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.tpl-related a{color:#1E5AA8;font-weight:600}

/* Committee / speakers: contain avatar initial */
.people-grid,.speaker-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.speaker-card{background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 4px 12px rgba(0,0,0,.05);text-align:center}
.speaker-photo{width:100%;height:160px;background:linear-gradient(135deg,#0F2B46,#1A4A7A);display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.speaker-photo span,.speaker-photo .speaker-initial{font-size:52px;color:rgba(255,255,255,.3);font-weight:800;line-height:1;display:block}
.speaker-photo img{width:100%;height:100%;object-fit:cover}
.speaker-info{padding:18px}
.speaker-info h3{font-size:16px;color:#0F2B46;font-weight:700;margin:0 0 4px}
.speaker-info p{font-size:12px;color:#00A86B;font-weight:600;margin:0}
.committee-card .avatar{overflow:hidden}

/* Program agenda — isolated from homepage dates timeline */
.tpl-agenda .timeline{max-width:none;margin:0;position:relative}
.tpl-agenda .timeline::before{display:none!important;content:none!important}
.tpl-agenda .timeline-row{display:grid;grid-template-columns:140px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid #e8edf2;align-items:start}
.tpl-agenda .timeline-time{font-weight:700;color:#00A86B;font-size:13px}
.tpl-agenda .timeline-copy b{display:block;color:#0F2B46;margin-bottom:4px}
.tpl-agenda .timeline-copy span{color:#666;font-size:14px;line-height:1.7}
.agenda-board{background:#fff;border:1px solid #e8edf2;border-radius:14px;padding:28px;box-shadow:0 4px 16px rgba(0,0,0,.04)}
.agenda-board-head span{color:#888;font-size:13px}

/* Call for papers accordion — hide native triangle so it does not cover TRACK */
.track-acc{display:flex;flex-direction:column;gap:10px}
.track-acc details{background:#fff;border:1px solid #e8edf2;border-radius:12px;overflow:hidden}
.track-acc summary{list-style:none;display:flex;align-items:center;gap:14px;padding:16px 18px;cursor:pointer}
.track-acc summary::-webkit-details-marker,.track-acc summary::marker{display:none;content:''}
.track-acc .track-no{flex:0 0 auto;min-width:64px;text-align:center;background:#e8f0fb;border-radius:8px;padding:6px 8px}
.track-acc .track-no small{display:block;font-size:10px;letter-spacing:1px;color:#1E5AA8;font-weight:700}
.track-acc .track-no b{font-size:18px;color:#0F2B46}
.track-acc summary h3{flex:1 1 auto;margin:0;font-size:16px;color:#0F2B46}
.track-acc .chev{margin-left:auto;width:8px;height:8px;border-right:2px solid #0F2B46;border-bottom:2px solid #0F2B46;transform:rotate(45deg);transition:transform .2s}
.track-acc details[open] .chev{transform:rotate(225deg)}
.track-acc .track-body{padding:0 18px 18px;color:#555;line-height:1.8}

/* Dates page single timeline */
.page-shell.dates{background:#f8fafc}
.intro-split{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center}
.intro-kicker{display:block;font-size:12px;letter-spacing:2px;color:#00A86B;font-weight:700;margin-bottom:8px}
@media (max-width:900px){.intro-split,.tpl-agenda .timeline-row{grid-template-columns:1fr}}

/* Floating tools: back-to-top & share FAB (appended by build_v2_css.py; not in design HTML) */
.back-to-top{
  position:fixed;right:22px;bottom:24px;z-index:90;
  width:46px;height:46px;display:grid;place-items:center;padding:0;
  border:0;border-radius:50%;color:#fff;background:var(--blue-700);cursor:pointer;
  box-shadow:0 10px 24px rgba(7,26,55,.22);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s,background .2s ease;
}
.back-to-top::before{
  content:"";width:10px;height:10px;margin-top:3px;
  border-left:2px solid #fff;border-top:2px solid #fff;transform:rotate(45deg);
}
.back-to-top:hover{background:var(--red-600)}
.back-to-top.is-visible{opacity:1;visibility:visible;transform:none}
.back-to-top:focus-visible{outline:3px solid rgba(30,99,165,.35);outline-offset:3px}

.share-btn{
  display:grid;place-items:center;
  min-width:42px;height:42px;padding:0;border:1px solid #d7e0ea;border-radius:50%;
  color:var(--navy-900);background:#fff;cursor:pointer;font-size:0;line-height:0;
  transition:transform .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.share-btn svg{width:18px;height:18px;display:block;flex-shrink:0}
.share-btn svg [stroke]{stroke:currentColor;fill:none}
.share-btn svg [fill]:not([fill="none"]){fill:currentColor;stroke:none}
.share-btn[data-share="weibo"]{color:#e6162d}
.share-btn[data-share="linkedin"]{color:#0a66c2}
.share-btn[data-share="x"]{color:#111}
.share-btn[data-share="wechat"]{color:#07c160}

.share-fab{
  position:fixed;right:22px;bottom:24px;z-index:110;
  display:flex;flex-direction:column;align-items:center;
  opacity:1;visibility:visible;transform:none;pointer-events:auto;
  transition:bottom .28s var(--ease),opacity .28s var(--ease),transform .28s var(--ease);
}
.share-fab.with-back-top{bottom:82px}
.share-fab.with-home-fab{bottom:82px}
.share-fab.with-home-fab.with-back-top{bottom:140px}

.ei-home-fab{
  position:fixed;right:22px;bottom:24px;z-index:95;
  width:46px;height:46px;display:grid;place-items:center;padding:0;
  border:0;border-radius:50%;color:#fff;background:var(--blue-700);text-decoration:none;
  box-shadow:0 10px 24px rgba(7,26,55,.22);
  transition:bottom .28s var(--ease),background .2s ease,transform .2s ease;
}
.ei-home-fab.with-back-top{bottom:82px}
.ei-home-fab:hover{background:var(--red-600)}
.ei-home-fab:focus-visible{outline:3px solid rgba(30,99,165,.35);outline-offset:3px}
.ei-home-fab svg{
  width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;
  stroke-linecap:round;stroke-linejoin:round;
}
.ei-home-fab-label{
  position:absolute;right:calc(100% + 10px);top:50%;transform:translateY(-50%);
  padding:6px 10px;border-radius:8px;color:#fff;background:rgba(7,26,55,.92);
  font-size:11px;font-weight:800;white-space:nowrap;
  opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s;
}
.ei-home-fab:hover .ei-home-fab-label{opacity:1;visibility:visible}
.share-fab-toggle{
  position:relative;z-index:2;width:46px;height:46px;display:grid;place-items:center;padding:0;
  border:0;border-radius:50%;color:#fff;background:var(--blue-700);cursor:pointer;
  box-shadow:0 10px 24px rgba(7,26,55,.22);
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.share-fab-toggle:hover,
.share-fab.is-open .share-fab-toggle{
  background:var(--red-600);
  box-shadow:0 12px 26px rgba(7,26,55,.28);
}
.share-fab-toggle svg{
  width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;
  stroke-linecap:round;stroke-linejoin:round;
}
.share-fab-sr{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}
.share-fab-panel{
  position:absolute;bottom:100%;left:50%;
  display:flex;flex-direction:column-reverse;align-items:center;gap:6px;
  width:46px;margin:0;padding:0 0 10px;list-style:none;
  transform:translateX(-50%) translateY(12px) scale(.92);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s;
}
.share-fab-panel::after{
  content:"";position:absolute;top:100%;left:50%;
  width:52px;height:12px;transform:translateX(-50%);pointer-events:auto;
}
.share-fab.is-open .share-fab-panel,
.share-fab:focus-within .share-fab-panel{
  opacity:1;visibility:visible;pointer-events:auto;
  transform:translateX(-50%) translateY(0) scale(1);
}
.share-fab-panel .share-btn{
  width:42px;height:42px;min-width:42px;padding:0;
  border:1px solid #d7e0ea;border-radius:50%;color:var(--navy-900);background:#fff;
  box-shadow:0 8px 18px rgba(7,26,55,.14);font-size:0;line-height:0;
  transform:translateY(8px) scale(.86);opacity:0;
  transition:transform .28s var(--ease),opacity .28s var(--ease),background .2s ease,color .2s ease,border-color .2s ease;
}
.share-fab-panel .share-btn svg{width:20px;height:20px}
.share-fab.is-open .share-fab-panel .share-btn,
.share-fab:focus-within .share-fab-panel .share-btn{transform:none;opacity:1}
.share-fab-panel .share-btn:nth-child(1){transition-delay:.02s}
.share-fab-panel .share-btn:nth-child(2){transition-delay:.05s}
.share-fab-panel .share-btn:nth-child(3){transition-delay:.08s}
.share-fab-panel .share-btn:nth-child(4){transition-delay:.11s}
.share-fab-panel .share-btn:nth-child(5){transition-delay:.14s}
.share-fab-panel .share-btn:nth-child(6){transition-delay:.17s}
.share-fab-panel .share-btn:hover{color:#fff;border-color:transparent}
.share-fab-panel .share-btn[data-share="copy"]:hover{background:var(--blue-700)}
.share-fab-panel .share-btn[data-share="email"]:hover{background:var(--red-600)}
.share-fab-panel .share-btn[data-share="weibo"]:hover{background:#e6162d}
.share-fab-panel .share-btn[data-share="linkedin"]:hover{background:#0a66c2}
.share-fab-panel .share-btn[data-share="x"]:hover{background:#111}
.share-fab-panel .share-btn[data-share="wechat"]:hover{background:#07c160}
.share-fab-tip{
  position:absolute;right:calc(100% + 12px);bottom:0;width:min(230px,70vw);
  padding:12px 14px;border-radius:12px;color:#fff;background:var(--navy-900);
  box-shadow:0 12px 28px rgba(7,26,55,.22);font-size:12px;font-weight:700;line-height:1.45;
  opacity:0;visibility:hidden;transform:translateX(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;pointer-events:none;
  z-index:3;
}
.share-fab-tip.is-show{opacity:1;visibility:visible;transform:none}
.share-fab-label{
  position:absolute;right:calc(100% + 10px);top:50%;transform:translateY(-50%);
  padding:6px 10px;border-radius:8px;color:#fff;background:rgba(7,26,55,.92);
  font-size:11px;font-weight:800;white-space:nowrap;
  opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s;
  z-index:3;
}
.share-fab:not(.is-open):hover .share-fab-label{opacity:1;visibility:visible}
@media (hover:hover) and (pointer:fine){
  .share-fab:hover .share-fab-toggle{background:var(--red-600)}
  .share-fab:hover .share-fab-panel{
    opacity:1;visibility:visible;pointer-events:auto;
    transform:translateX(-50%) translateY(0) scale(1);
  }
  .share-fab:hover .share-fab-panel .share-btn{transform:none;opacity:1}
}

/* 表单提交结果：居中弹窗（site.js 动态插入） */
.form-success,.form-success.is-visible{display:none!important}
.site-notice{
  position:fixed;inset:0;z-index:4000;
  display:none;place-items:center;padding:24px;
}
.site-notice.is-open{display:grid}
.site-notice-backdrop{
  position:absolute;inset:0;background:rgba(7,26,55,.55);
}
.site-notice-dialog{
  position:relative;z-index:1;width:min(420px,100%);
  background:#fff;border-radius:16px;padding:32px 28px 24px;text-align:center;
  box-shadow:0 24px 60px rgba(7,26,55,.28);
}
.site-notice-icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:50%;
  background:#e8f5ef;color:#00A86B;
  display:grid;place-items:center;font-size:26px;line-height:1;font-weight:800;
}
.site-notice-icon::before{content:"✓"}
.site-notice.is-error .site-notice-icon{background:#fdecee;color:#C42B38}
.site-notice.is-error .site-notice-icon::before{content:"!"}
.site-notice-title{margin:0 0 8px;color:#0F2B46;font-size:20px;font-weight:800}
.site-notice-message{margin:0 0 20px;color:#555;font-size:14px;line-height:1.7}
.site-notice-ok{min-width:120px}



/* --- Responsive --- */
@media (max-width: 1200px) {
  .audience-grid,.forum-grid,.highlight-grid,.topic-grid,.committee-grid,.about-content{grid-template-columns:repeat(2,1fr)!important}
  .about-content{gap:32px}
  .footer-content{grid-template-columns:1fr 1fr!important}
  .topic-columns,.about-features,.attend-grid{grid-template-columns:repeat(2,1fr)!important}
  .committee-grid,.people-grid,.speaker-grid{grid-template-columns:repeat(3,1fr)!important}
  .process-steps{flex-wrap:wrap;gap:20px}
  .process-step{flex:1 1 30%;min-width:140px}
  .process-step:not(:last-child)::after{display:none}
}
@media (max-width: 900px) {
  .navbar,.section,.footer,.hero,.page-header,.page-hero,.content-wrap,.breadcrumb,.relation-bar,.info-bar,.publication{padding-left:24px!important;padding-right:24px!important}
  .nav-overflow{display:none!important}
  .nav-menu{display:none}
  .ei-nav{display:none}
  .menu-toggle{display:flex!important;flex-direction:column;gap:5px;background:none;border:none;padding:8px;cursor:pointer;margin-left:auto}
  .menu-toggle span{display:block;width:22px;height:2px;background:#0F2B46;border-radius:2px}
  .ei-header-tools .menu-toggle{display:flex!important}
  .header-lang{display:inline-flex!important}
  .utility{display:none}
  .site-header,.site-header .header-main,.ei-header,.ei-header .ei-header-bar,.nav-overflow-host{
    overflow:visible;
  }
  .site-header .header-main,.ei-header .ei-header-bar{
    position:relative;flex-wrap:nowrap;align-items:center;height:auto;min-height:72px;padding:12px 0;
  }
  .site-header .main-nav.navbar,.site-header .main-nav{
    height:auto!important;min-height:0;padding:0!important;box-shadow:none;background:transparent;
    position:static;align-self:stretch;
  }
  .main-nav.open{
    display:flex!important;flex-direction:column;align-items:stretch;justify-content:flex-start;
    position:absolute;top:100%;left:0;right:0;width:100%;
    height:auto!important;max-height:calc(100vh - 72px);max-height:calc(100dvh - 72px);
    overflow-x:hidden;overflow-y:auto;background:#fff;padding:12px 24px 16px!important;
    box-shadow:0 8px 24px rgba(0,0,0,.1);gap:8px;z-index:200;
  }
  .main-nav.open .nav-overflow-host,
  .ei-header:has(.ei-nav.open) .nav-overflow-host{
    display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;
    flex:0 1 auto;width:100%;max-width:100%;min-width:0;min-height:0;
  }
  .main-nav.open .nav-menu,
  .main-nav.open .nav-list{
    display:flex!important;flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;width:100%;height:auto;white-space:normal;flex-wrap:nowrap;position:static;
  }
  .nav-menu.ei-nav.open,
  ul.ei-nav.open{
    display:flex!important;flex-direction:column;align-items:stretch;justify-content:flex-start;
    position:absolute;top:100%;left:0;right:0;width:100%;
    height:auto!important;max-height:calc(100vh - 72px);max-height:calc(100dvh - 72px);
    overflow-x:hidden;overflow-y:auto;background:#fff;padding:12px 24px 16px;
    box-shadow:0 8px 24px rgba(0,0,0,.1);z-index:200;gap:0;white-space:normal;flex-wrap:nowrap;
  }
  .main-nav.open .nav-list > li,
  .main-nav.open .nav-list > .nav-item,
  .nav-menu.ei-nav.open > li,
  ul.ei-nav.open > li{
    width:100%;flex:0 0 auto;white-space:normal;
  }
  .main-nav.open .nav-list a,
  .main-nav.open .nav-parent,
  .nav-menu.ei-nav.open a,
  ul.ei-nav.open a{
    display:block;width:100%;padding:10px 4px;white-space:normal;
  }
  .main-nav.open .nav-item .dropdown{
    position:static;box-shadow:none;border:0;padding:0 0 4px 12px;min-width:0;
  }
  .main-nav.open .nav-mobile-lang{display:block;padding-top:8px;border-top:1px solid #e8edf2}
  .hero h1{font-size:32px!important}
  .hero .subtitle{font-size:20px!important}
  .section-header h2{font-size:26px!important}
  .audience-grid,.forum-grid,.highlight-grid,.topic-grid,.committee-grid,.people-grid,.speaker-grid,.about-content,.topic-columns,.about-features,.attend-grid,.step-cards,.ethics-grid,.template-cards{grid-template-columns:1fr!important}
  .dates .timeline::before{left:20px!important}
  .dates .timeline-item,.dates .timeline-item:nth-child(even){flex-direction:row!important;padding-left:48px}
  .dates .timeline-item .content{width:100%!important;text-align:left!important}
  .dates .timeline-item .dot{left:20px!important}
  .footer-content,.pub-info{grid-template-columns:1fr!important}
  .info-bar{flex-wrap:wrap;gap:20px!important;justify-content:flex-start!important}
  .hero-meta,.hero-cta,.hero-pub{flex-wrap:wrap}
  .nav-logo .logo-text h1{font-size:14px!important;max-width:min(220px,46vw)}
  .nav-logo .logo-text p{display:none}
  .header-tools,.ei-header-tools,.menu-toggle{flex-shrink:0;z-index:2}
  .nav-logo,.brand{flex-shrink:1;max-width:calc(100% - 140px)}
  .ei-payment-layout{grid-template-columns:1fr!important}
  .ei-payment-qr{width:min(220px,100%);margin:0 auto}
  .ei-pay-account > div{grid-template-columns:1fr}
}
@media (max-width: 600px) {
  .hero{padding:48px 20px 64px!important}
  .section{padding:48px 20px!important}
  .hero h1{font-size:26px!important}
  .btn{padding:11px 18px;font-size:14px}
  .hero-cta,.bottom-cta .btns{flex-direction:column;align-items:stretch}
  .back-to-top,.share-fab,.ei-home-fab{right:16px;bottom:18px}
  .share-fab.with-back-top,.share-fab.with-home-fab,.ei-home-fab.with-back-top{bottom:72px}
  .share-fab.with-home-fab.with-back-top{bottom:126px}
  .share-fab-toggle,.share-fab-panel .share-btn{width:42px;height:42px;min-width:42px}
  .share-fab-label,.ei-home-fab-label{display:none}
  .people-grid,.speaker-grid{grid-template-columns:1fr 1fr!important}
}
@media (prefers-reduced-motion:reduce){
  .back-to-top,.share-fab,.share-fab-panel,.share-fab-panel .share-btn,.ei-home-fab{transition:none!important}
}
.design-label,.module-annotation{display:none!important}


/* 表单提交结果：居中弹窗（site.js 动态插入） */
.form-success,.form-success.is-visible{display:none!important}
.site-notice{
  position:fixed;inset:0;z-index:4000;
  display:none;place-items:center;padding:24px;
}
.site-notice.is-open{display:grid}
.site-notice-backdrop{
  position:absolute;inset:0;background:rgba(7,26,55,.55);
}
.site-notice-dialog{
  position:relative;z-index:1;width:min(420px,100%);
  background:#fff;border-radius:16px;padding:32px 28px 24px;text-align:center;
  box-shadow:0 24px 60px rgba(7,26,55,.28);
}
.site-notice-icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:50%;
  background:#e8f5ef;color:#00A86B;
  display:grid;place-items:center;font-size:26px;line-height:1;font-weight:800;
}
.site-notice-icon::before{content:"✓"}
.site-notice.is-error .site-notice-icon{background:#fdecee;color:#C42B38}
.site-notice.is-error .site-notice-icon::before{content:"!"}
.site-notice-title{margin:0 0 8px;color:#0F2B46;font-size:20px;font-weight:800}
.site-notice-message{margin:0 0 20px;color:#555;font-size:14px;line-height:1.7}
.site-notice-ok{min-width:120px}