:root{--navy:#1a2b53;--navy2:#24457e;--accent:#f0623c;--ink:#17233b;--muted:#6b7a92;--line:#e3e9f2;--bg:#fbfcfe;--card:#ffffff}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--navy2);text-decoration:none}
a:hover{color:var(--accent)}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
header.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1120px;margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between}
.logo{font-weight:800;font-size:1.1rem;color:var(--navy);letter-spacing:-.3px;display:flex;align-items:center;gap:10px}
.logo img{width:32px;height:32px;border-radius:8px;object-fit:cover}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{padding:8px 14px;border-radius:8px;color:var(--muted);font-weight:500;font-size:.92rem;transition:all .15s}
.nav-links a:hover{color:var(--navy);background:#f2f5fa}
.nav-links a.active{color:var(--navy);background:#eef2f9;font-weight:600}
@media(max-width:820px){.nav-links{display:none}}
.hero{position:relative;padding:68px 0 56px;background:linear-gradient(180deg,#fff 0%,#f4f7fc 100%);border-bottom:1px solid var(--line);overflow:hidden}
.hero::before{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(240,98,60,.10),rgba(240,98,60,0) 68%)}
.hero::after{content:"";position:absolute;left:-140px;bottom:-160px;width:460px;height:460px;border-radius:50%;background:radial-gradient(circle,rgba(36,69,126,.10),rgba(36,69,126,0) 68%)}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.35fr .65fr;gap:44px;align-items:center}
@media(max-width:880px){.hero-grid{grid-template-columns:1fr}}
.kicker{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);padding:6px 14px;border-radius:999px;font-size:.8rem;color:var(--muted);margin-bottom:20px}
.kicker span.dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}
.hero h1{font-size:2.5rem;font-weight:800;line-height:1.15;letter-spacing:-.02em;color:var(--navy);margin-bottom:14px}
.hero h1 span{color:var(--accent)}
.hero p{font-size:1.05rem;color:var(--muted);max-width:620px;margin-bottom:22px}
.acronym{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;font-size:.92rem;margin-bottom:24px;max-width:640px}
.acronym b{color:var(--navy)}
.acronym .t{color:var(--accent)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:10px;background:var(--navy);color:#fff;font-weight:600;font-size:.93rem;box-shadow:0 4px 12px rgba(26,43,83,.22);transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(26,43,83,.28);color:#fff}
.btn.ghost{background:transparent;color:var(--navy);border:1.5px solid var(--line);box-shadow:none}
.btn.ghost:hover{background:#f2f5fa;transform:none}
.hero-card{background:linear-gradient(160deg,#1a2b53,#24457e);color:#fff;border-radius:16px;padding:26px;box-shadow:0 14px 32px rgba(26,43,83,.25)}
.hero-card h3{font-size:.85rem;opacity:.8;margin-bottom:12px;text-transform:uppercase;letter-spacing:.6px;font-weight:600}
.hero-card .stat{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px dashed rgba(255,255,255,.15);font-size:.92rem}
.hero-card .stat:last-of-type{border-bottom:none}
.hero-card .num{font-weight:700;font-size:1.05rem}
.profile{display:flex;gap:16px;align-items:center;margin-top:20px}
.profile img{width:60px;height:60px;border-radius:50%;object-fit:cover;border:2.5px solid rgba(255,255,255,.25)}
.profile .who b{display:block;font-size:.95rem}
.profile .who span{font-size:.78rem;opacity:.85}
section{padding:56px 0}
.sec-title{font-size:1.65rem;font-weight:800;color:var(--navy);margin-bottom:6px;display:flex;align-items:center;gap:12px}
.sec-title::before{content:"";width:4px;height:26px;background:var(--accent);border-radius:2px}
.sec-sub{color:var(--muted);font-size:.98rem;margin-bottom:32px}
.news-list{display:grid;gap:12px;max-width:920px}
.news-item{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 20px;display:flex;gap:16px;align-items:flex-start;transition:box-shadow .15s,transform .15s}
.news-item:hover{box-shadow:0 6px 20px rgba(23,35,59,.06);transform:translateY(-1px)}
.news-date{flex-shrink:0;background:#eef2f9;color:var(--navy2);font-weight:700;font-size:.78rem;padding:5px 10px;border-radius:8px;min-width:88px;text-align:center}
.news-body{font-size:.95rem}
.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:.72rem;font-weight:700;background:#ffece7;color:#d14818;margin-left:6px}
.badge.blue{background:#e7efff;color:#24457e}
.research{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px}
.r-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px;transition:transform .18s,box-shadow .18s}
.r-card:hover{transform:translateY(-3px);box-shadow:0 10px 28px rgba(23,35,59,.08)}
.r-icon{font-size:1.5rem;margin-bottom:12px;display:inline-flex;width:46px;height:46px;border-radius:12px;background:#eef2f9;color:var(--navy2);align-items:center;justify-content:center}
.r-card h3{font-size:1.05rem;font-weight:700;color:var(--navy);margin-bottom:8px}
.r-card p{font-size:.9rem;color:var(--muted);line-height:1.65}
.pub{display:grid;grid-template-columns:96px 1fr;border:1px solid var(--line);border-radius:14px;background:var(--card);overflow:hidden;margin-bottom:16px}
.pub-year{background:#f4f7fc;color:var(--navy);font-weight:800;font-size:1.15rem;display:flex;align-items:center;justify-content:center;border-right:1px solid var(--line)}
.pub-body{padding:20px 24px}
.pub-body h3{font-size:1.02rem;font-weight:700;color:var(--ink);margin-bottom:6px;line-height:1.45}
.pub-body .authors{font-size:.9rem;color:var(--muted);margin-bottom:6px}
.pub-body .venue{font-size:.85rem;color:var(--navy2)}
.tag{display:inline-block;font-size:.72rem;padding:3px 10px;border-radius:999px;font-weight:700;margin-left:8px;vertical-align:1px}
.tag.accepted{background:#e7f8ec;color:#187a44}
.tag.under-review{background:#e7efff;color:#24457e}
.tag.writing{background:#fff5d6;color:#8a6d00}
.tag.planning{background:#f1f3f7;color:#5a6b83}
.tag.ccf-a{background:#ffece7;color:#d14824}
.tag.ccf-b{background:#fceff5;color:#a5306d}
.tag.journal{background:#eaf6f5;color:#2c7a71}
.tag.conference{background:#f0f2f8;color:#40547a}
.people-section{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(400px,1fr))}
.person{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 20px;display:flex;gap:16px;align-items:flex-start;transition:transform .15s,box-shadow .15s}
.person:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(23,35,59,.07)}
.avatar{width:48px;height:48px;border-radius:50%;flex-shrink:0;background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.95rem}
.person .info{flex:1}
.person .info b{color:var(--navy);font-size:1rem;display:block;margin-bottom:3px}
.person .info small{color:var(--muted);font-size:.85rem}
.role-tag{display:inline-block;padding:2px 10px;border-radius:999px;font-size:.72rem;font-weight:700;background:#eef2f9;color:var(--navy2);margin-left:8px}
.role-tag.pi{background:#ffece7;color:#d14824}
.join{background:linear-gradient(135deg,#1a2b53,#24457e);color:#fff;border-radius:16px;padding:36px;text-align:center}
.join h3{font-size:1.3rem;font-weight:700;margin-bottom:10px}
.join p{opacity:.9;font-size:.96rem;margin-bottom:18px;max-width:620px;margin:0 auto 18px}
.join a{color:#ffb3a0;font-weight:600}
.join a:hover{color:#ff8a70}
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.contact-card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px}
.contact-card b{color:var(--navy);display:block;margin-bottom:4px;font-size:.95rem}
.contact-card span{color:var(--muted);font-size:.9rem}
.stats-mini{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;margin-bottom:36px}
.stat-card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;text-align:center}
.stat-card b{display:block;font-size:1.8rem;font-weight:800;color:var(--navy)}
.stat-card span{color:var(--muted);font-size:.85rem}
footer{border-top:1px solid var(--line);padding:28px 0;background:#fff;color:var(--muted);font-size:.88rem;text-align:center}
@media(max-width:880px){.pub{grid-template-columns:1fr}.pub-year{border-right:none;border-bottom:1px solid var(--line);padding:10px}.people-section{grid-template-columns:1fr}}
@media(max-width:640px){.hero h1{font-size:2rem}.news-item{flex-direction:column;gap:8px}.pub-body{padding:16px 18px}}