/* Qiong Chang - Full Site CSS - changqiong.github.io */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#faf9f7;--card:#fff;--text:#1a1a1a;--muted:#6b6b6b;--accent:#2563eb;--accent2:#7c3aed;--border:#e5e5e5;--hero-bg:#0f172a;--hero-text:#f8fafc;--tag-bg:#eff6ff;--tag-text:#1e40af;--green-bg:#f0fdf4;--green-text:#166534;--amber-bg:#fffbeb;--amber-text:#92400e;--purple-bg:#f5f3ff;--purple-text:#5b21b6}
body{font-family:'Source Sans 3',-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}

/* NAV */
.hp-nav{position:sticky;top:0;z-index:100;background:rgba(250,249,247,.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.hp-nav-inner{max-width:1100px;margin:0 auto;padding:0 48px;display:flex;align-items:center;justify-content:space-between;height:56px}
.hp-nav-name{font-family:'DM Serif Display',serif;font-size:18px;font-weight:400;color:var(--text);text-decoration:none}
.hp-nav-name:hover{text-decoration:none}
.hp-nav-links{display:flex;gap:4px}
.hp-nav-links a{font-size:14px;color:var(--muted);text-decoration:none;padding:6px 14px;border-radius:8px;font-weight:500;transition:all .2s}
.hp-nav-links a:hover,.hp-nav-links a.active{color:var(--text);background:rgba(0,0,0,.04);text-decoration:none}
.hp-nav-toggle{display:none;background:none;border:none;cursor:pointer;color:var(--text)}

/* HERO */
.hp-hero{background:var(--hero-bg);color:var(--hero-text);overflow:hidden;position:relative}
.hp-hero::before{content:'';position:absolute;top:0;right:0;width:60%;height:100%;background:radial-gradient(ellipse at 80% 50%,rgba(37,99,235,.15) 0%,transparent 70%);pointer-events:none}
.hp-hero-inner{max-width:1100px;margin:0 auto;padding:80px 48px 72px;display:grid;grid-template-columns:200px 1fr;gap:56px;align-items:center;position:relative;z-index:1;animation:fadeUp .8s ease-out}
.hp-avatar-wrap{position:relative}
.hp-avatar{width:200px;height:200px;border-radius:20px;object-fit:cover;border:3px solid rgba(255,255,255,.15);filter:grayscale(20%);box-shadow:0 20px 60px rgba(0,0,0,.4)}
.hp-avatar-glow{position:absolute;inset:-4px;border-radius:22px;background:linear-gradient(135deg,rgba(37,99,235,.4),rgba(124,58,237,.3));z-index:-1;filter:blur(12px);opacity:.6}
.hp-hero-info h1{font-family:'DM Serif Display',serif;font-size:42px;font-weight:400;letter-spacing:-.5px;margin-bottom:6px;line-height:1.15}
.hp-subtitle{font-size:18px;color:rgba(248,250,252,.65);font-weight:300;margin-bottom:24px}
.hp-affil{font-size:15px;color:rgba(248,250,252,.5);margin-bottom:28px;line-height:1.6}
.hp-affil a{color:rgba(147,197,253,.9);text-decoration:none;border-bottom:1px solid rgba(147,197,253,.3)}
.hp-affil a:hover{border-bottom-color:rgba(147,197,253,.7);text-decoration:none}
.hp-hero-links{display:flex;gap:12px;flex-wrap:wrap}
.hp-hero-links a{display:inline-flex;align-items:center;gap:7px;padding:8px 18px;border-radius:10px;font-size:14px;font-weight:500;text-decoration:none;transition:all .2s;border:1px solid rgba(255,255,255,.15);color:rgba(248,250,252,.8)}
.hp-hero-links a:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.3);color:#fff;text-decoration:none}
.hp-hero-links a svg{width:16px;height:16px;opacity:.7}

/* SUBPAGE HEADER */
.sp-header{background:var(--hero-bg);color:var(--hero-text);position:relative;overflow:hidden}
.sp-header::before{content:'';position:absolute;top:0;right:0;width:50%;height:100%;background:radial-gradient(ellipse at 80% 50%,rgba(37,99,235,.12) 0%,transparent 70%);pointer-events:none}
.sp-header-inner{max-width:1100px;margin:0 auto;padding:52px 48px 44px;position:relative;z-index:1;animation:fadeUp .6s ease-out}
.sp-header h1{font-family:'DM Serif Display',serif;font-size:36px;font-weight:400;letter-spacing:-.3px;line-height:1.2}
.sp-header-desc{font-size:16px;color:rgba(248,250,252,.55);margin-top:8px;font-weight:300}

/* MAIN */
.hp-main{max-width:1100px;margin:0 auto;padding:56px 48px 80px}
.sp-main{padding-top:48px}

/* SECTION TITLES */
.hp-main h2{font-family:'DM Serif Display',serif;font-size:28px;font-weight:400;margin-bottom:32px;margin-top:64px;position:relative;padding-bottom:12px}
.hp-main h2:first-child{margin-top:0}
.hp-main h2::after{content:'';position:absolute;bottom:0;left:0;width:40px;height:3px;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:2px}
.hp-main h3{font-family:'Source Sans 3',sans-serif;font-size:20px;font-weight:600;margin-top:40px;margin-bottom:16px;color:var(--text)}

/* RESEARCH INTERESTS */
.hp-interests{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:16px}
.hp-interest-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:28px 24px;transition:all .3s;position:relative;overflow:hidden;animation:fadeUp .6s ease-out both}
.hp-interest-card:nth-child(2){animation-delay:.1s}.hp-interest-card:nth-child(3){animation-delay:.2s}
.hp-interest-card:hover{transform:translateY(-3px);box-shadow:0 12px 40px rgba(0,0,0,.06);border-color:#ccc}
.hp-interest-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;border-radius:16px 16px 0 0;transition:opacity .3s;opacity:0}
.hp-interest-card:nth-child(1)::before{background:linear-gradient(90deg,#2563eb,#60a5fa)}
.hp-interest-card:nth-child(2)::before{background:linear-gradient(90deg,#7c3aed,#a78bfa)}
.hp-interest-card:nth-child(3)::before{background:linear-gradient(90deg,#059669,#34d399)}
.hp-interest-card:hover::before{opacity:1}
.hp-interest-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:20px}
.hp-interest-card:nth-child(1) .hp-interest-icon{background:#eff6ff;color:#2563eb}
.hp-interest-card:nth-child(2) .hp-interest-icon{background:#f5f3ff;color:#7c3aed}
.hp-interest-card:nth-child(3) .hp-interest-icon{background:#ecfdf5;color:#059669}
.hp-interest-card h3{font-size:17px;font-weight:600;margin-bottom:8px;margin-top:0}
.hp-interest-card p{font-size:14px;color:var(--muted);line-height:1.6;margin:0}

/* NEWS */
.hp-news-list{display:flex;flex-direction:column}
.hp-news-item{display:grid;grid-template-columns:88px 1fr;gap:20px;padding:18px 0;border-bottom:1px solid var(--border);align-items:baseline}
.hp-news-item:last-child{border-bottom:none}
.hp-news-date{font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--accent);font-weight:500;white-space:nowrap;position:relative;padding-left:14px}
.hp-news-date::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:6px;height:6px;border-radius:50%;background:var(--accent)}
.hp-news-text{font-size:15px;line-height:1.55}
.hp-news-text em{font-style:italic;color:var(--text)}
.hp-news-text a{color:var(--accent);font-weight:500}

/* RESEARCH CARDS */
.hp-research-grid{display:flex;flex-direction:column;gap:28px}
.hp-research-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:32px;transition:all .3s;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:start}
.hp-research-card:hover{box-shadow:0 8px 32px rgba(0,0,0,.06);border-color:#ccc}
.hp-research-venue{font-size:13px;color:var(--muted);font-weight:500;text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}
.hp-research-card h3{font-family:'Source Sans 3',sans-serif;font-size:18px;font-weight:600;line-height:1.4;margin-bottom:4px;margin-top:0}
.hp-research-authors{font-size:14px;color:var(--muted);margin-bottom:8px}
.hp-research-authors strong{color:var(--text);font-weight:600}
.hp-research-desc{font-size:14px;color:var(--muted);line-height:1.6;margin-bottom:8px}
.hp-research-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.hp-tag{padding:4px 12px;border-radius:6px;font-size:12px;font-weight:500;display:inline-block}
.hp-tag-blue{background:var(--tag-bg);color:var(--tag-text)}
.hp-tag-green{background:var(--green-bg);color:var(--green-text)}
.hp-tag-amber{background:var(--amber-bg);color:var(--amber-text)}
.hp-tag-purple{background:var(--purple-bg);color:var(--purple-text)}
.hp-research-links{display:flex;gap:8px}
.hp-research-links a{font-size:13px;padding:5px 14px;border-radius:8px;text-decoration:none;border:1px solid var(--border);color:var(--muted);font-weight:500;transition:all .2s}
.hp-research-links a:hover{border-color:var(--accent);color:var(--accent);background:var(--tag-bg);text-decoration:none}
.hp-speedup{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:90px;padding:16px;background:linear-gradient(135deg,#eff6ff,#f5f3ff);border-radius:14px;text-align:center}
.hp-speedup .num{font-family:'DM Serif Display',serif;font-size:32px;color:var(--accent);line-height:1}
.hp-speedup .label{font-size:11px;color:var(--muted);margin-top:4px;font-weight:500;text-transform:uppercase;letter-spacing:.5px}

/* ABOUT TEXT */
.hp-main>p{font-size:16px;line-height:1.75;margin-bottom:16px;color:#333}

/* PUBLICATION LIST */
.pub-item{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:24px 28px;margin-bottom:16px;transition:all .3s;display:flex;gap:20px;align-items:baseline}
.pub-item:hover{box-shadow:0 6px 24px rgba(0,0,0,.05);border-color:#ccc}
.pub-num{font-family:'JetBrains Mono',monospace;font-size:13px;font-weight:500;color:var(--accent);min-width:32px;flex-shrink:0}
.pub-content{flex:1}
.pub-title{font-size:16px;font-weight:600;line-height:1.45;margin-bottom:4px}
.pub-authors{font-size:14px;color:var(--muted);margin-bottom:4px}
.pub-authors strong{color:var(--text);font-weight:600}
.pub-venue{font-size:13px;color:var(--muted);font-style:italic;margin-bottom:8px}
.pub-venue .pub-award{font-style:normal;font-weight:600;color:var(--amber-text);background:var(--amber-bg);padding:2px 8px;border-radius:4px;font-size:12px;margin-left:6px}
.pub-links{display:flex;gap:6px;flex-wrap:wrap}
.pub-links a{font-size:12px;padding:3px 12px;border-radius:6px;text-decoration:none;border:1px solid var(--border);color:var(--muted);font-weight:500;transition:all .2s}
.pub-links a:hover{border-color:var(--accent);color:var(--accent);background:var(--tag-bg);text-decoration:none}

/* TEAM */
.team-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-bottom:16px}
.team-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:24px 28px;transition:all .3s}
.team-card:hover{box-shadow:0 6px 24px rgba(0,0,0,.05);border-color:#ccc}
.team-card .team-name{font-size:16px;font-weight:600;margin-bottom:2px}
.team-card .team-name a{text-decoration:none}.team-card .team-name a:hover{text-decoration:underline}
.team-card .team-role{font-family:'JetBrains Mono',monospace;font-size:12px;font-weight:500;color:var(--accent);margin-bottom:4px}
.team-card .team-affil{font-size:13px;color:var(--muted);margin-bottom:6px}
.team-card .team-interest{font-size:13px;color:var(--muted);line-height:1.5}
.team-card .team-dest{font-size:13px;color:var(--muted);margin-bottom:6px}
.team-card .team-dest strong{color:var(--text);font-weight:500}

/* SERVICE */
.service-item{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px 24px;margin-bottom:10px;transition:all .3s;display:flex;align-items:baseline;gap:16px}
.service-item:hover{box-shadow:0 4px 16px rgba(0,0,0,.04);border-color:#ccc}
.service-role{font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:500;padding:3px 10px;border-radius:6px;white-space:nowrap;flex-shrink:0}
.role-editor{background:var(--purple-bg);color:var(--purple-text)}
.role-reviewer{background:var(--tag-bg);color:var(--tag-text)}
.service-info{flex:1}
.service-name{font-size:15px;font-weight:600;line-height:1.4}
.service-detail{font-size:13px;color:var(--muted)}

/* FUNDING */
.funding-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:28px 32px;margin-bottom:20px;transition:all .3s;position:relative;overflow:hidden}
.funding-card:hover{box-shadow:0 6px 24px rgba(0,0,0,.05);border-color:#ccc}
.funding-card::before{content:'';position:absolute;top:0;left:0;width:4px;height:100%;border-radius:14px 0 0 14px}
.funding-card.current::before{background:linear-gradient(180deg,var(--accent),var(--accent2))}
.funding-card.past::before{background:var(--border)}
.funding-status{font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:500;padding:3px 10px;border-radius:6px;display:inline-block;margin-bottom:12px}
.status-current{background:var(--green-bg);color:var(--green-text)}
.status-past{background:#f5f5f4;color:#78716c}
.funding-title{font-size:16px;font-weight:600;line-height:1.45;margin-bottom:8px}
.funding-role{font-size:14px;color:var(--accent);font-weight:500;margin-bottom:4px}
.funding-source{font-size:14px;color:var(--muted);margin-bottom:2px}
.funding-period{font-size:13px;color:var(--muted)}

/* TEACHING */
.teaching-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:28px 32px;margin-bottom:20px;transition:all .3s;display:flex;align-items:center;justify-content:space-between;gap:20px}
.teaching-card:hover{box-shadow:0 6px 24px rgba(0,0,0,.05);border-color:#ccc}
.teaching-card h3{font-size:18px;font-weight:600;margin-bottom:4px;margin-top:0}
.teaching-period{font-size:14px;color:var(--muted)}
.teaching-link a{font-size:13px;padding:8px 20px;border-radius:10px;text-decoration:none;border:1px solid var(--border);color:var(--accent);font-weight:500;transition:all .2s;white-space:nowrap}
.teaching-link a:hover{border-color:var(--accent);background:var(--tag-bg);text-decoration:none}

/* HR */
.hp-main hr{border:none;height:1px;background:var(--border);margin:40px 0}

/* FOOTER */
.hp-footer{border-top:1px solid var(--border);padding:32px 48px;text-align:center;font-size:13px;color:var(--muted);max-width:1100px;margin:0 auto}
.hp-footer a{color:var(--muted);text-decoration:underline}

/* ANIMATIONS */
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}

/* RESPONSIVE */
@media(max-width:768px){
.hp-nav-inner{padding:0 24px}.hp-nav-toggle{display:block}
.hp-nav-links{display:none;position:absolute;top:56px;left:0;right:0;background:rgba(250,249,247,.95);backdrop-filter:blur(16px);flex-direction:column;padding:8px 24px 16px;border-bottom:1px solid var(--border)}
.hp-nav-links.open{display:flex}.hp-nav-links a{padding:10px 0}
.hp-hero-inner{grid-template-columns:1fr;text-align:center;padding:48px 24px 40px;gap:28px}
.hp-avatar-wrap{margin:0 auto}.hp-avatar{width:140px;height:140px}
.hp-hero-links{justify-content:center}.hp-hero-info h1{font-size:32px}
.sp-header-inner{padding:36px 24px 28px}.sp-header h1{font-size:28px}
.hp-main,.sp-main{padding:40px 24px 60px}
.hp-interests{grid-template-columns:1fr}
.hp-research-card{grid-template-columns:1fr}
.hp-speedup{flex-direction:row;gap:8px;min-width:0;padding:12px 16px}
.hp-news-item{grid-template-columns:1fr;gap:4px}
.team-grid{grid-template-columns:1fr}
.pub-item{flex-direction:column;gap:4px}
.teaching-card{flex-direction:column;align-items:flex-start}
.service-item{flex-direction:column;gap:8px}
}