:root{
  --blue-950:#02133f;
  --blue-900:#06206f;
  --blue-800:#0834ad;
  --blue-700:#0647df;
  --blue-500:#087dff;
  --cyan:#00c6ff;
  --green:#00a66f;
  --orange:#ffad10;
  --red:#ed1c24;
  --gray-950:#07111f;
  --gray-800:#243044;
  --gray-700:#344054;
  --gray-600:#667085;
  --gray-200:#e6edf8;
  --gray-100:#f4f8ff;
  --white:#ffffff;
  --shadow:0 24px 60px rgba(6,34,101,.15);
  --radius:24px;
  --container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--gray-950);background:#fff;line-height:1.65}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
.skip-link{position:absolute;left:-999px;top:10px;background:#fff;color:#000;padding:10px 14px;border-radius:10px;z-index:1000}.skip-link:focus{left:12px}
.en{display:none}.lang-en .zh{display:none}.lang-en .en{display:inline}.lang-en .site-nav .en,.lang-en p .en,.lang-en h1 .en,.lang-en h2 .en,.lang-en h3 .en,.lang-en small .en,.lang-en strong .en,.lang-en em .en,.lang-en li .en,.lang-en figcaption .en,.lang-en span.en{display:inline}.lang-en .zh{display:none!important}.lang-zh .en{display:none!important}.lang-zh .zh{display:inline}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.88);backdrop-filter:blur(18px);border-bottom:1px solid rgba(11,50,150,.08);transition:box-shadow .2s ease}.site-header.scrolled{box-shadow:0 14px 36px rgba(5,31,96,.1)}
.nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:12px;min-width:230px}.brand-mark{width:50px;height:50px;object-fit:contain}.brand-text strong{display:block;color:var(--blue-800);font-size:1.08rem;letter-spacing:.04em}.brand-text small{display:block;color:var(--gray-600);font-size:.74rem;line-height:1.25}
.site-nav{display:flex;align-items:center;gap:18px;font-size:.94rem;color:var(--gray-800)}.site-nav a{position:relative;white-space:nowrap}.site-nav a::after{content:"";position:absolute;left:0;right:0;bottom:-8px;height:2px;background:linear-gradient(90deg,var(--blue-700),var(--cyan));transform:scaleX(0);transform-origin:left;transition:transform .2s ease}.site-nav a:hover::after,.site-nav a.active::after{transform:scaleX(1)}
.lang-switch{display:flex;gap:4px;background:#edf4ff;border:1px solid #d9e7ff;border-radius:999px;padding:4px}.lang-switch button{border:0;background:transparent;border-radius:999px;padding:7px 10px;color:#4d5f7a;font-weight:700;cursor:pointer}.lang-switch button.active{background:var(--blue-700);color:#fff;box-shadow:0 6px 16px rgba(8,71,223,.26)}
.nav-toggle{display:none;background:transparent;border:0;width:42px;height:42px;padding:8px;cursor:pointer}.nav-toggle span{display:block;height:2px;background:var(--blue-900);margin:6px 0;border-radius:3px}
.hero{position:relative;isolation:isolate;overflow:hidden;background:radial-gradient(circle at 70% 10%,rgba(0,198,255,.16),transparent 36%),linear-gradient(135deg,#f7fbff 0%,#edf5ff 42%,#ffffff 100%);padding:92px 0 70px}.hero-bg{position:absolute;inset:0;z-index:-1;overflow:hidden}.orb{position:absolute;border-radius:50%;filter:blur(1px);opacity:.7}.orb-a{width:520px;height:520px;right:-130px;top:-150px;border:1px solid rgba(8,71,223,.14);background:radial-gradient(circle,rgba(8,125,255,.11),transparent 62%)}.orb-b{width:320px;height:320px;left:-120px;bottom:-120px;background:radial-gradient(circle,rgba(0,198,255,.14),transparent 66%)}.grid-plane{position:absolute;inset:auto -10% -34% -10%;height:55%;background:linear-gradient(rgba(8,71,223,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(8,71,223,.08) 1px,transparent 1px);background-size:54px 54px;transform:perspective(700px) rotateX(62deg);transform-origin:bottom;opacity:.45}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(330px,.85fr);gap:58px;align-items:center}.eyebrow,.section-kicker{color:var(--blue-700);font-weight:800;text-transform:uppercase;letter-spacing:.16em;font-size:.78rem;margin:0 0 12px}.hero h1{font-size:clamp(2.45rem,5vw,5.2rem);line-height:1.05;margin:0;color:var(--blue-950);letter-spacing:-.045em}.hero-line{font-size:1.25rem;color:var(--blue-700);font-weight:800;margin:20px 0 0}.hero-subtitle{font-size:1.15rem;color:#40516f;max-width:760px;margin:18px 0 0}.hero-meta{display:grid;grid-template-columns:repeat(4,minmax(120px,1fr));gap:12px;margin:30px 0}.hero-meta>span{background:rgba(255,255,255,.82);border:1px solid rgba(8,71,223,.11);border-radius:18px;padding:15px;box-shadow:0 10px 28px rgba(6,45,128,.08)}.hero-meta strong{display:block;color:var(--blue-800);font-size:1.05rem}.hero-meta em{font-style:normal;color:var(--gray-600);font-size:.83rem}
.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:12px 20px;font-weight:800;border:1px solid transparent;transition:.2s ease;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,var(--blue-700),#00a7ff);color:#fff;box-shadow:0 16px 34px rgba(8,71,223,.25)}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 20px 40px rgba(8,71,223,.32)}.btn-ghost{border-color:#c8dcff;color:var(--blue-800);background:rgba(255,255,255,.62)}.btn-ghost:hover{background:#fff;transform:translateY(-1px)}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.notice-inline{font-size:.92rem;color:#5d6e89;margin-top:18px;max-width:760px}
.hero-card{background:rgba(255,255,255,.76);border:1px solid rgba(8,71,223,.12);box-shadow:var(--shadow);border-radius:34px;padding:28px;position:relative;overflow:hidden}.hero-card::before{content:"";position:absolute;inset:-40% -30% auto auto;width:280px;height:280px;background:radial-gradient(circle,rgba(0,198,255,.24),transparent 67%);z-index:0}.hero-logo{position:relative;z-index:1;width:min(100%,440px);margin:0 auto}.countdown{position:relative;z-index:1;background:linear-gradient(135deg,#06195a,#0834ad);color:#fff;border-radius:24px;padding:18px;margin-top:18px}.count-label{display:block;font-size:.85rem;color:#bcd6ff;margin-bottom:10px}.count-grid{display:grid;grid-template-columns:1fr auto 1fr auto 1fr auto;gap:9px;align-items:end}.count-grid strong{font-size:2rem;line-height:1}.count-grid small{font-size:.75rem;color:#d9e8ff;margin-bottom:6px}
.status-strip{background:#fff;border-top:1px solid rgba(8,71,223,.08);border-bottom:1px solid rgba(8,71,223,.08);padding:28px 0}.status-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.status-item{border:1px solid var(--gray-200);border-radius:22px;padding:20px;background:linear-gradient(180deg,#fff,#f8fbff);box-shadow:0 10px 26px rgba(5,37,112,.06)}.tag{display:inline-flex;background:#e9f3ff;color:var(--blue-800);border-radius:999px;padding:4px 10px;font-size:.72rem;font-weight:900;letter-spacing:.06em;text-transform:uppercase}.status-item strong{display:block;margin:12px 0 6px;color:var(--blue-950)}.status-item p{margin:0;color:var(--gray-600);font-size:.94rem}
.section{padding:88px 0}.section-light{background:#f6f9ff}.section-blue{background:linear-gradient(135deg,#051849,#0732a1);color:#fff;position:relative;overflow:hidden}.section-blue::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 15% 20%,rgba(0,198,255,.18),transparent 30%),radial-gradient(circle at 80% 80%,rgba(255,255,255,.08),transparent 34%);pointer-events:none}.section-blue>.container{position:relative}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}.two-col.reverse{grid-template-columns:.95fr 1.05fr}.section-copy h2,.section-head h2{font-size:clamp(2rem,3.4vw,3.2rem);line-height:1.14;letter-spacing:-.035em;margin:0 0 20px;color:var(--blue-950)}.section-blue .section-copy h2,.section-blue .section-head h2{color:#fff}.section-copy p,.section-head p{color:#4d5f78;font-size:1.04rem}.section-blue .section-copy p,.section-blue .section-head p{color:#d7e6ff}.section-head{max-width:820px;margin-bottom:38px}.section-head.center{text-align:center;margin-left:auto;margin-right:auto}.image-panel{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:#fff}.image-panel img{width:100%;height:100%;min-height:360px;object-fit:cover}.image-caption{position:absolute;left:18px;right:18px;bottom:18px;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);border-radius:18px;padding:16px}.image-caption strong{color:var(--blue-900)}.image-caption p{margin:4px 0 0;color:var(--gray-600);font-size:.9rem}
.theme-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.theme-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:24px;padding:24px;min-height:260px;transition:.2s ease}.theme-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.12)}.theme-card>span{display:inline-flex;width:52px;height:52px;align-items:center;justify-content:center;border-radius:16px;background:#fff;color:var(--blue-800);font-weight:1000;font-size:1.1rem;margin-bottom:18px;box-shadow:0 12px 26px rgba(0,0,0,.12)}.theme-card:nth-child(2)>span{color:#176ef2}.theme-card:nth-child(3)>span{color:#00a66f}.theme-card:nth-child(4)>span{color:#ed1c24}.theme-card:nth-child(5)>span{color:#ffad10}.theme-card h3{font-size:1.15rem;line-height:1.28;margin:0 0 12px}.theme-card p{margin:0;color:#d6e5ff;font-size:.96rem}.visual-section{background:#fff}.dikwp-row{display:flex;gap:10px;margin-top:24px}.dikwp-row span{width:54px;height:54px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:#fff;font-weight:1000;font-size:1.2rem;box-shadow:0 12px 24px rgba(7,35,100,.14)}.dikwp-row .d{background:#8b8f99}.dikwp-row .i{background:#1d6fff}.dikwp-row .k{background:#00a66f}.dikwp-row .w{background:#ed1c24}.dikwp-row .p{background:#ffad10}
.timeline{position:relative;display:grid;gap:18px}.timeline::before{content:"";position:absolute;left:150px;top:8px;bottom:8px;width:2px;background:linear-gradient(var(--blue-700),var(--cyan));opacity:.3}.timeline-item{display:grid;grid-template-columns:140px 1fr;gap:34px;align-items:start}.timeline-item time{font-weight:900;color:var(--blue-800);padding-top:24px}.timeline-item>div{background:#fff;border:1px solid var(--gray-200);border-radius:24px;padding:24px;box-shadow:0 12px 32px rgba(7,36,112,.07);position:relative}.timeline-item>div::before{content:"";position:absolute;left:-44px;top:28px;width:16px;height:16px;border-radius:50%;background:var(--blue-700);box-shadow:0 0 0 8px #dceaff}.timeline-item.highlight>div{border-color:#b9d5ff;background:linear-gradient(180deg,#fff,#f6fbff)}.timeline-item span{color:var(--blue-700);font-size:.82rem;font-weight:900;text-transform:uppercase;letter-spacing:.08em}.timeline-item h3{margin:8px 0 8px;color:var(--blue-950);font-size:1.28rem}.timeline-item p{margin:0;color:var(--gray-600)}

.organizers-section{background:#fff}.org-panel-grid{display:grid;grid-template-columns:.78fr 1.22fr;gap:22px;align-items:start}.org-card{background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid var(--gray-200);border-radius:28px;padding:26px;box-shadow:0 14px 34px rgba(7,37,114,.08)}.org-card.featured{background:linear-gradient(135deg,#f7fbff,#eef6ff);border-color:#c9ddff}.org-card h3{margin:14px 0 16px;color:var(--blue-950);font-size:1.35rem}.org-list{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:10px}.org-list li{display:inline-flex;align-items:center;max-width:100%;min-width:0;overflow-wrap:anywhere;text-align:left;border:1px solid #dbe8ff;background:#fff;border-radius:999px;padding:8px 12px;color:var(--gray-800);font-weight:800;font-size:.92rem;box-shadow:0 8px 18px rgba(5,37,112,.04)}.org-list.major{display:grid;grid-template-columns:1fr;gap:12px}.org-list.major li{border-radius:18px;padding:14px 16px;color:var(--blue-900);font-size:1.02rem;justify-content:center;background:#fff}.org-list li.pending{border-style:dashed;color:var(--gray-600);background:#f7faff}.experts-section .section-head{max-width:980px}.expert-note{margin:-12px 0 24px;background:#fff;border:1px solid #c9ddff;border-left:5px solid var(--blue-700);border-radius:18px;padding:16px 18px;color:var(--gray-700);box-shadow:0 10px 26px rgba(7,37,114,.06)}.expert-note strong{color:var(--blue-950)}.expert-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.expert-card{background:#fff;border:1px solid var(--gray-200);border-radius:26px;padding:22px;box-shadow:0 14px 34px rgba(7,37,114,.08);display:flex;flex-direction:column;min-height:260px}.expert-top{display:flex;justify-content:space-between;gap:10px;align-items:flex-start;flex-wrap:wrap;margin-bottom:14px}.expert-card .tag.online{background:#eaf7ff;color:#006da9}.expert-mode{display:inline-flex;border:1px solid #dbe8ff;background:#f7faff;color:var(--gray-600);border-radius:999px;padding:4px 10px;font-size:.76rem;font-weight:900}.expert-card h3{margin:0 0 10px;overflow-wrap:anywhere;color:var(--blue-950);font-size:1.2rem;line-height:1.25}.expert-title{margin:0;color:#40516f;font-weight:760;line-height:1.55}.expert-details{margin:16px 0 0;display:grid;gap:10px}.expert-details div{border-top:1px solid var(--gray-200);padding-top:12px}.expert-details dt{font-size:.78rem;color:var(--blue-700);font-weight:1000;text-transform:uppercase;letter-spacing:.06em}.expert-details dd{margin:4px 0 0;color:var(--gray-700);font-size:.95rem;line-height:1.55}
.participation-section .info-card{background:#fff;color:var(--gray-950);border-radius:24px;padding:28px;box-shadow:var(--shadow)}.info-card h3{margin:0 0 14px;color:var(--blue-950)}.info-card ul{margin:0;padding-left:20px}.info-card li{margin:8px 0;color:#4d5f78}.edition-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.edition-card{background:#fff;border:1px solid var(--gray-200);border-radius:24px;overflow:hidden;box-shadow:0 14px 34px rgba(7,37,114,.08);display:flex;flex-direction:column}.edition-card img{aspect-ratio:16/9;object-fit:cover;width:100%}.edition-card div{padding:22px}.edition-card span{display:inline-block;color:var(--blue-700);font-weight:1000;letter-spacing:.08em}.edition-card h3{margin:8px 0 10px;color:var(--blue-950);line-height:1.25}.edition-card p{margin:0;color:var(--gray-600);font-size:.96rem}.review-section{background:#fff}.review-feature{display:grid;grid-template-columns:1.15fr .85fr;gap:0;overflow:hidden;background:linear-gradient(135deg,#fff,#f5f9ff);border:1px solid var(--gray-200);border-radius:28px;box-shadow:0 18px 44px rgba(7,37,114,.10);margin-bottom:22px}.review-feature img{width:100%;height:100%;min-height:330px;object-fit:cover}.review-feature div{padding:30px;display:flex;flex-direction:column;justify-content:center}.review-feature span,.review-card span{display:inline-block;color:var(--blue-700);font-weight:1000;letter-spacing:.08em;text-transform:uppercase;font-size:.8rem}.review-feature h3,.review-card h3{margin:8px 0 10px;color:var(--blue-950);line-height:1.25}.review-feature p,.review-card p{margin:0;color:var(--gray-600);font-size:.96rem}.review-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.review-card{background:#fff;border:1px solid var(--gray-200);border-radius:24px;overflow:hidden;box-shadow:0 12px 30px rgba(6,35,106,.09);display:flex;flex-direction:column}.review-card img{width:100%;aspect-ratio:4/3;object-fit:cover}.review-card div{padding:16px 16px 18px}.contact-section address{font-style:normal}.contact-card{background:#fff;border:1px solid var(--gray-200);border-radius:28px;padding:26px;box-shadow:var(--shadow)}.contact-lockup{width:100%;max-width:440px;margin-bottom:18px}.contact-card p{margin:12px 0;color:var(--gray-800)}.contact-card a{color:var(--blue-700);font-weight:900}.muted{color:var(--gray-600)!important;font-size:.94rem}.site-footer{background:#030c29;color:#d8e4ff;padding:44px 0}.footer-grid{display:grid;grid-template-columns:1fr auto;gap:34px;align-items:center}.footer-logo{width:360px;max-width:100%;filter:drop-shadow(0 10px 20px rgba(0,0,0,.18));background:rgba(255,255,255,.96);border-radius:18px;padding:8px}.footer-grid p{margin:8px 0;color:#bdd0ff}.footer-meta{text-align:right}
.reveal{opacity:0;transform:translateY(22px);transition:opacity .55s ease,transform .55s ease}.reveal.visible{opacity:1;transform:none}
@media (max-width:1080px){.site-nav{gap:14px}.hero-grid,.two-col,.two-col.reverse,.org-panel-grid{grid-template-columns:1fr}.hero-card{max-width:560px;margin:0 auto}.status-grid,.theme-grid,.edition-grid,.expert-grid,.review-grid{grid-template-columns:repeat(2,1fr)}.review-feature{grid-template-columns:1fr}.hero-meta{grid-template-columns:repeat(2,1fr)}}
@media (max-width:820px){.nav-toggle{display:block}.site-nav{position:absolute;left:20px;right:20px;top:76px;display:none;flex-direction:column;align-items:flex-start;background:#fff;border:1px solid #dce8ff;border-radius:22px;padding:18px;box-shadow:0 18px 44px rgba(4,30,96,.16)}.site-nav.open{display:flex}.nav-wrap{gap:10px}.brand{min-width:auto}.brand-text small{display:none}.hero{padding:62px 0 50px}.section{padding:64px 0}.status-grid,.theme-grid,.edition-grid,.expert-grid,.review-grid{grid-template-columns:1fr}.review-feature{grid-template-columns:1fr}.timeline::before{display:none}.timeline-item{grid-template-columns:1fr;gap:8px}.timeline-item>div::before{display:none}.timeline-item time{padding-top:0}.footer-grid{grid-template-columns:1fr}.footer-meta{text-align:left}.count-grid{grid-template-columns:1fr auto 1fr auto 1fr auto}.lang-switch{margin-left:auto}}
@media (max-width:560px){.container{width:min(100% - 28px,var(--container))}.hero-meta{grid-template-columns:1fr}.hero-actions{flex-direction:column}.btn{width:100%}.hero h1{font-size:2.35rem}.section-copy h2,.section-head h2{font-size:2rem}.brand-text strong{font-size:1rem}.brand-mark{width:44px;height:44px}.count-grid strong{font-size:1.6rem}.image-panel img{min-height:270px}}


/* Visual update: expert portrait cards */
.expert-mosaic{margin:0 0 28px;border-radius:28px;overflow:hidden;background:#fff;box-shadow:0 18px 44px rgba(7,37,114,.12);border:1px solid #dbe8ff}.expert-mosaic img{display:block;width:100%;height:auto}.expert-mosaic figcaption{padding:14px 18px;color:var(--gray-700);font-size:.95rem;font-weight:760;background:#fff}.expert-photo{aspect-ratio:1/1;height:auto;border-radius:22px;margin:0 0 16px;overflow:hidden;background:#eef5ff;box-shadow:inset 0 0 0 1px rgba(201,221,255,.8)}.expert-photo img{display:block;width:100%;height:100%;aspect-ratio:1/1;object-fit:cover;object-position:center center}.expert-photo.double{display:grid;grid-template-columns:1fr 1fr;gap:8px;background:#f7fbff;padding:8px;align-items:center}.expert-photo.double img{width:100%;height:auto;aspect-ratio:1/1;object-fit:cover;object-position:center center;border-radius:17px;box-shadow:inset 0 0 0 1px rgba(201,221,255,.7)}
@media (max-width:820px){.expert-photo{height:auto}}
@media (max-width:560px){.expert-photo{height:auto}.expert-photo.double{height:auto}.expert-photo.double img{height:auto}.review-grid{grid-template-columns:1fr}}