/* ======================================================
   IMPACTHUANG — MASTER STYLESHEET
   Dr. Xianglin Huang Academic Website
   ====================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&display=swap');

/* ─── CSS VARIABLES ─── */
:root {
  --navy:     #0B1C34;
  --navy-d:   #071220;
  --accent:   #C8430F;
  --accent-h: #A3360C;
  --link:     #2563EB;
  --link-h:   #1D4ED8;
  --bg:       #FFFFFF;
  --bg-alt:   #F4F7FB;
  --border:   #E2E8F0;
  --text:     #1A2333;
  --muted:    #5E6E82;
  --r:        8px;
  --r-lg:     14px;
  --max:      1100px;
  --nav-h:    68px;
  --t:        0.22s ease;
}

/* ─── RESET ─── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html  { scroll-behavior: smooth; }
body  {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 16px; line-height: 1.65;
  color: var(--text); background: var(--bg); overflow-x: hidden;
}
a    { color: inherit; text-decoration: none; }
ul   { list-style: none; }
img  { display: block; max-width: 100%; height: auto; }
h1,h2,h3,h4,h5 { line-height: 1.2; }

/* ─── LAYOUT ─── */
.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.section     { padding: 80px 0; }
.section.alt { background: var(--bg-alt); }

/* ─── SECTION LABELS / TITLES ─── */
.s-label {
  display: block; font-size: 11px; font-weight: 700;
  letter-spacing: 2px; text-transform: uppercase;
  color: var(--accent); margin-bottom: 10px;
}
.s-title { font-size: 32px; font-weight: 800; color: var(--navy); line-height: 1.18; margin-bottom: 14px; }
.s-sub   { font-size: 16.5px; color: var(--muted); max-width: 600px; line-height: 1.72; }
.s-bar   { width: 40px; height: 3px; background: var(--accent); margin-bottom: 22px; border-radius: 2px; }

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 22px; border-radius: 6px;
  font-size: 14px; font-weight: 600; cursor: pointer;
  transition: var(--t); border: 2px solid transparent; white-space: nowrap;
}
.btn-primary { background: var(--accent);  color: #fff; border-color: var(--accent);  }
.btn-primary:hover { background: var(--accent-h); border-color: var(--accent-h); }
.btn-outline { background: transparent; color: var(--text); border-color: var(--border); }
.btn-outline:hover { border-color: var(--navy); color: var(--navy); }
.btn-white   { background: #fff; color: var(--navy); border-color: #fff; }
.btn-white:hover { background: rgba(255,255,255,.88); }
.btn-ghost   { background: rgba(255,255,255,.10); color: #fff; border-color: rgba(255,255,255,.22); }
.btn-ghost:hover { background: rgba(255,255,255,.18); }

/* ─── TAGS / BADGES ─── */
.tag {
  display: inline-block; font-size: 11px; font-weight: 700;
  letter-spacing: 1.1px; text-transform: uppercase;
  padding: 3px 10px; border-radius: 99px;
}
.tag-accent { background: rgba(200,67,15,.12); color: var(--accent); }
.tag-navy   { background: rgba(11,28,52,.09);  color: var(--navy);   }
.tag-blue   { background: rgba(37,99,235,.10); color: var(--link);   }
.tag-green  { background: rgba(16,185,129,.10);color: #059669;       }
.badge {
  display: inline-block; font-size: 11px; font-weight: 600;
  padding: 2px 8px; border-radius: 4px;
  background: var(--bg-alt); color: var(--muted); border: 1px solid var(--border);
}

/* ─── NAVBAR ─── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h); background: var(--navy); z-index: 900;
  box-shadow: 0 2px 16px rgba(0,0,0,.20);
}
.navbar .inner {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { font-size: 21px; font-weight: 800; color: #fff; letter-spacing: -.3px; }
.nav-logo span { color: var(--accent); }

.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-links > li { position: relative; }
.nav-links > li > a {
  display: block; font-size: 13.5px; font-weight: 600; letter-spacing: .4px;
  color: rgba(255,255,255,.80); padding: 8px 13px; border-radius: 5px; transition: var(--t);
}
.nav-links > li > a:hover,
.nav-links > li > a.active { color: #fff; background: rgba(255,255,255,.10); }

/* Dropdown */
.dd-menu {
  display: none; position: absolute; top: calc(100% + 4px); left: 0;
  background: var(--navy-d); border: 1px solid rgba(255,255,255,.09);
  border-radius: var(--r); min-width: 234px;
  box-shadow: 0 12px 32px rgba(0,0,0,.30); padding: 6px; z-index: 100;
}
.nav-links > li:hover > .dd-menu { display: block; }
.dd-menu a {
  display: block; font-size: 13px; font-weight: 500;
  color: rgba(255,255,255,.72); padding: 9px 14px; border-radius: 4px; transition: var(--t);
}
.dd-menu a:hover { background: rgba(255,255,255,.08); color: #fff; }

/* Hamburger */
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 6px; background: none; border: none;
}
.nav-toggle span { width: 22px; height: 2px; background: #fff; border-radius: 2px; transition: var(--t); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── PAGE HEADER (inner pages) ─── */
.page-header { background: var(--navy); padding: calc(var(--nav-h) + 48px) 0 48px; }
.page-header .bc { font-size: 12.5px; color: rgba(255,255,255,.40); margin-bottom: 10px; }
.page-header .bc a { color: var(--accent); transition: var(--t); }
.page-header .bc a:hover { text-decoration: underline; }
.page-header .bc span { margin: 0 6px; }
.page-header h1 { font-size: 38px; font-weight: 800; color: #fff; line-height: 1.15; }
.page-header p  { font-size: 16px; color: rgba(255,255,255,.58); margin-top: 10px; max-width: 560px; line-height: 1.6; }

/* ======================================================
   HOME — HERO
   ====================================================== */
.hero {
  background: linear-gradient(135deg, var(--navy) 0%, #102040 100%);
  min-height: 100vh; display: flex; align-items: center;
  padding: calc(var(--nav-h) + 40px) 0 60px;
}
.hero .hi {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; gap: 64px; width: 100%;
}
.hero-content { flex: 1; }
.hero-eyebrow {
  font-size: 11.5px; font-weight: 700; letter-spacing: 2.5px;
  text-transform: uppercase; color: rgba(255,255,255,.46); margin-bottom: 20px;
}
.hero-content h1 { font-size: 58px; font-weight: 800; color: #fff; line-height: 1.08; margin-bottom: 14px; }
.hero-content h1 span { color: var(--accent); }
.hero-pos { font-size: 15px; color: rgba(255,255,255,.58); line-height: 1.6; margin-bottom: 22px; }
.hero-vision {
  font-size: 17px; color: rgba(255,255,255,.82); line-height: 1.74;
  margin-bottom: 32px; max-width: 540px;
  border-left: 3px solid var(--accent); padding-left: 18px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-photo { flex-shrink: 0; }
.hero-photo img {
  width: 320px; height: 390px; object-fit: cover; object-position: top center;
  border-radius: 16px; border: 3px solid rgba(255,255,255,.10);
  box-shadow: 0 24px 64px rgba(0,0,0,.40);
}

/* ─── HOME — RESEARCH PILLARS GRID ─── */
.res-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; margin-top: 40px; }
.res-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--r-lg);
  overflow: hidden; display: flex; flex-direction: column; transition: var(--t);
}
.res-card:hover { box-shadow: 0 10px 36px rgba(0,0,0,.10); transform: translateY(-3px); }
.rc-img { height: 190px; overflow: hidden; background: var(--bg-alt); }
.rc-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--t); }
.res-card:hover .rc-img img { transform: scale(1.05); }
.rc-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.rc-tag   { margin-bottom: 12px; }
.rc-title { font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 10px; line-height: 1.3; }
.rc-desc  { font-size: 14px; color: var(--muted); line-height: 1.68; margin-bottom: 14px; flex: 1; }
.rc-meta  { font-size: 12.5px; color: var(--muted); margin-bottom: 18px; }
.rc-meta strong { color: var(--text); }

/* ─── HOME — PUB CARDS ─── */
.pub-cards { display: grid; grid-template-columns: 1fr; gap: 12px; margin-top: 32px; }
.pub-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--r);
  padding: 20px 22px; border-left: 4px solid transparent; transition: var(--t);
  display: flex; gap: 20px; align-items: flex-start;
}
.pub-card:hover { border-left-color: var(--accent); box-shadow: 0 4px 18px rgba(0,0,0,.07); }
.pc-year { font-size: 13px; font-weight: 700; color: var(--accent); min-width: 40px; padding-top: 3px; }
.pc-body { flex: 1; }
.pc-title { font-size: 15px; font-weight: 600; color: var(--navy); margin-bottom: 5px; line-height: 1.45; }
.pc-title a { color: var(--link); transition: var(--t); }
.pc-title a:hover { text-decoration: underline; color: var(--link-h); }
.pc-authors { font-size: 13.5px; color: var(--muted); margin-bottom: 4px; }
.pc-authors strong { color: var(--text); font-weight: 600; }
.pc-journal { font-size: 13px; color: var(--muted); font-style: italic; }
.pc-tags { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; }

/* ─── HOME — ABOUT SNIPPET ─── */
.about-snap { display: grid; grid-template-columns: 1fr auto; gap: 64px; align-items: center; }
.about-snap-text p { font-size: 16px; line-height: 1.75; color: var(--text); margin-bottom: 14px; }
.about-snap-text p:first-of-type { margin-top: 14px; }
.about-snap-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.prof-photo-sm {
  width: 210px; height: 255px; object-fit: cover; object-position: top;
  border-radius: var(--r-lg); border: 3px solid var(--border);
  box-shadow: 0 8px 28px rgba(0,0,0,.10);
}

/* ─── HOME — NEWS LIST ─── */
.news-list { margin-top: 32px; }
.news-item { display: flex; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--border); }
.news-item:last-child { border-bottom: none; }
.news-date { font-size: 12px; font-weight: 700; color: var(--accent); min-width: 72px; padding-top: 2px; white-space: nowrap; }
.news-title { font-size: 15px; font-weight: 600; color: var(--navy); margin-bottom: 3px; }
.news-desc  { font-size: 13.5px; color: var(--muted); line-height: 1.5; }

/* ─── HOME — DOWNLOADS ─── */
.dl-list { display: flex; flex-direction: column; gap: 16px; margin-top: 32px; }
.dl-item {
  display: flex; gap: 20px; align-items: flex-start;
  background: #fff; border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 24px 26px; transition: var(--t);
}
.dl-item:hover { box-shadow: 0 6px 24px rgba(0,0,0,.08); }
.dl-icon {
  width: 46px; height: 46px; border-radius: 10px; flex-shrink: 0;
  background: rgba(200,67,15,.10); color: var(--accent);
  display: grid; place-items: center; font-size: 19px;
}
.dl-body { flex: 1; }
.dl-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
.dl-title { font-size: 16.5px; font-weight: 700; color: var(--navy); margin-bottom: 8px; line-height: 1.35; }
.dl-desc { font-size: 14px; color: var(--muted); line-height: 1.68; margin-bottom: 10px; }
.dl-meta { font-size: 12.5px; color: var(--muted); }
.dl-actions { display: flex; flex-direction: column; gap: 8px; flex-shrink: 0; min-width: 108px; }
.dl-note { margin-top: 20px; font-size: 13.5px; color: var(--muted); font-style: italic; }

/* ─── HOME — TEACHING ─── */
.course-list { display: flex; flex-direction: column; gap: 24px; margin-top: 32px; }
.course-block {
  background: #fff; border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 28px 30px;
}
.course-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.course-term { font-size: 13px; font-weight: 600; color: var(--muted); }
.course-title { font-size: 19px; font-weight: 800; color: var(--navy); margin-bottom: 12px; line-height: 1.3; }
.course-desc { font-size: 14.5px; color: var(--text); line-height: 1.72; margin-bottom: 16px; }
.course-topics { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 18px; }
.course-highlight {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--bg-alt); border-left: 3px solid var(--accent);
  border-radius: var(--r); padding: 14px 18px; font-size: 13.5px; color: var(--text); line-height: 1.62;
}
.course-highlight i { color: var(--accent); font-size: 16px; margin-top: 2px; flex-shrink: 0; }

/* ======================================================
   ABOUT PAGE
   ====================================================== */
.profile-hero { background: var(--navy); padding: calc(var(--nav-h) + 48px) 0 56px; }
.profile-grid { display: flex; gap: 48px; align-items: flex-start; }
.profile-photo-lg {
  width: 190px; height: 230px; object-fit: cover; object-position: top;
  border-radius: 12px; border: 3px solid rgba(255,255,255,.14);
  flex-shrink: 0; box-shadow: 0 12px 36px rgba(0,0,0,.30);
}
.profile-info {}
.profile-name  { font-size: 40px; font-weight: 800; color: #fff; margin-bottom: 6px; }
.profile-title { font-size: 15.5px; color: rgba(255,255,255,.62); margin-bottom: 20px; line-height: 1.58; }
.profile-links { display: flex; gap: 9px; flex-wrap: wrap; }
.profile-links a {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600; padding: 7px 14px; border-radius: 5px;
  background: rgba(255,255,255,.10); color: rgba(255,255,255,.80);
  border: 1px solid rgba(255,255,255,.14); transition: var(--t);
}
.profile-links a:hover { background: rgba(255,255,255,.18); color: #fff; }
.profile-links a.pa-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.profile-links a.pa-primary:hover { background: var(--accent-h); }

/* About body */
.about-body { display: grid; grid-template-columns: 1fr 330px; gap: 56px; padding: 60px 0; }
.bio-text { font-size: 15.5px; line-height: 1.78; color: var(--text); }
.bio-text p { margin-bottom: 16px; }
.bio-text h3 { font-size: 19px; font-weight: 700; color: var(--navy); margin: 28px 0 14px; }
.interest-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.interest-tags .tag { font-size: 12px; letter-spacing: .7px; padding: 5px 13px; }

/* Sidebar */
.sidebar-block { margin-bottom: 36px; }
.sidebar-block h4 {
  font-size: 11px; font-weight: 700; letter-spacing: 1.8px; text-transform: uppercase;
  color: var(--muted); margin-bottom: 16px; padding-bottom: 8px; border-bottom: 1px solid var(--border);
}

/* Timeline */
.timeline { position: relative; padding-left: 22px; }
.timeline::before { content: ''; position: absolute; left: 0; top: 8px; bottom: 8px; width: 2px; background: var(--border); }
.tl-item { position: relative; padding: 0 0 26px 22px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ''; position: absolute; left: -7px; top: 7px;
  width: 14px; height: 14px; border-radius: 50%;
  background: #fff; border: 2px solid var(--border);
}
.tl-item.current::before { border-color: var(--accent); background: var(--accent); }
.tl-period { font-size: 11.5px; font-weight: 700; color: var(--accent); margin-bottom: 3px; }
.tl-role   { font-size: 14px; font-weight: 700; color: var(--navy); margin-bottom: 2px; }
.tl-place  { font-size: 13.5px; color: var(--muted); line-height: 1.45; }
.tl-note   { font-size: 12.5px; color: var(--muted); margin-top: 4px; font-style: italic; }

/* Stats */
.stat-row { display: flex; gap: 28px; flex-wrap: wrap; }
.stat-num { font-size: 32px; font-weight: 800; color: var(--accent); line-height: 1; }
.stat-lbl { font-size: 12px; color: var(--muted); margin-top: 2px; }

/* Awards */
.award-item { display: flex; gap: 12px; margin-bottom: 12px; }
.award-item:last-child { margin-bottom: 0; }
.award-icon { font-size: 17px; margin-top: 1px; }
.award-title { font-size: 14px; font-weight: 600; color: var(--navy); }
.award-year  { font-size: 13px; color: var(--muted); }

/* Skills */
.skills-list li { font-size: 14px; color: var(--text); padding: 5px 0; border-bottom: 1px solid var(--border); }
.skills-list li:last-child { border-bottom: none; }
.skills-list li span { color: var(--muted); font-size: 13px; }

/* ======================================================
   RESEARCH OVERVIEW PAGE
   ====================================================== */
.vision-block {
  background: var(--navy); padding: 40px 48px; border-radius: var(--r-lg); margin: 48px 0 0;
}
.vision-block blockquote {
  font-size: 19px; font-weight: 300; line-height: 1.72; color: rgba(255,255,255,.88);
  border-left: 4px solid var(--accent); padding-left: 24px; font-style: italic; margin: 0;
}
.vision-block cite { display: block; margin-top: 14px; font-size: 13px; color: rgba(255,255,255,.40); padding-left: 28px; }

.res-overview-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; margin-top: 48px; }
.res-ov-card { border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden; transition: var(--t); }
.res-ov-card:hover { box-shadow: 0 10px 36px rgba(0,0,0,.10); }
.roc-img { height: 220px; overflow: hidden; position: relative; }
.roc-img img { width: 100%; height: 100%; object-fit: cover; }
.roc-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(11,28,52,.85) 0%, transparent 55%); }
.roc-label { position: absolute; bottom: 16px; left: 18px; font-size: 20px; font-weight: 800; color: #fff; line-height: 1.2; }
.roc-body { padding: 24px; }
.roc-body p { font-size: 14.5px; color: var(--muted); line-height: 1.68; margin-bottom: 16px; }
.roc-papers { font-size: 13px; color: var(--muted); margin-bottom: 18px; }
.roc-papers strong { color: var(--text); }

.method-strip {
  background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 36px 40px; display: flex; gap: 40px; align-items: center; margin-top: 36px;
}
.method-strip-text h3 { font-size: 20px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.method-strip-text p  { font-size: 14.5px; color: var(--muted); line-height: 1.68; max-width: 520px; }
.method-icons { display: flex; gap: 28px; flex-shrink: 0; margin-left: auto; }
.method-icon  { text-align: center; }
.mi-symbol { font-size: 26px; margin-bottom: 6px; }
.mi-label  { font-size: 11px; font-weight: 600; color: var(--muted); letter-spacing: .5px; text-transform: uppercase; }

/* ======================================================
   RESEARCH DETAIL PAGES
   ====================================================== */
.res-intro {
  font-size: 17px; color: var(--text); line-height: 1.78; max-width: 800px;
  padding: 48px 0 12px;
}

.paper-block { border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden; margin-bottom: 32px; }
.pb-header {
  background: var(--bg-alt); padding: 22px 28px;
  border-bottom: 1px solid var(--border); display: flex; gap: 14px; align-items: flex-start;
}
.pb-num {
  font-size: 11px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--accent); background: rgba(200,67,15,.10);
  padding: 4px 10px; border-radius: 99px; white-space: nowrap; margin-top: 2px; flex-shrink: 0;
}
.pb-title { font-size: 18px; font-weight: 700; color: var(--navy); line-height: 1.35; margin-bottom: 6px; }
.pb-title a { color: var(--link); }
.pb-title a:hover { text-decoration: underline; }
.pb-journal { font-size: 13px; color: var(--muted); }

.pb-body { display: grid; grid-template-columns: 1fr 300px; }
.pb-content { padding: 28px; }
.pb-content h4 {
  font-size: 11px; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase;
  color: var(--muted); margin-bottom: 12px; margin-top: 20px;
}
.pb-content h4:first-child { margin-top: 0; }
.pb-overview { font-size: 15px; color: var(--text); line-height: 1.72; }
.pb-highlights { padding: 0; }
.pb-highlights li {
  font-size: 14.5px; color: var(--text); line-height: 1.6;
  padding: 5px 0 5px 22px; position: relative;
}
.pb-highlights li::before {
  content: ''; position: absolute; left: 4px; top: 13px;
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent);
}
.pb-cite {
  background: var(--bg-alt); border-top: 1px solid var(--border);
  padding: 16px 28px; font-size: 13px; color: var(--muted); line-height: 1.58;
}
.pb-cite a { color: var(--link); }
.pb-cite a:hover { text-decoration: underline; }

.pb-figure {
  border-left: 1px solid var(--border); background: var(--bg-alt);
  padding: 20px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 12px;
}
.pb-figure img { max-width: 100%; border-radius: var(--r); box-shadow: 0 4px 14px rgba(0,0,0,.10); }
.fig-cap { font-size: 12px; color: var(--muted); text-align: center; line-height: 1.45; }

/* ======================================================
   PUBLICATIONS PAGE
   ====================================================== */
.pub-stats {
  display: flex; gap: 32px; flex-wrap: wrap;
  background: var(--navy); border-radius: var(--r-lg); padding: 28px 36px; margin-bottom: 40px;
}
.pub-stat-item .psn { font-size: 36px; font-weight: 800; color: var(--accent); line-height: 1; }
.pub-stat-item .psl { font-size: 12px; color: rgba(255,255,255,.50); margin-top: 3px; }

.pub-note { font-size: 13.5px; color: var(--muted); margin-bottom: 32px; font-style: italic; }

.pub-year-group { margin-bottom: 44px; }
.pub-year-hdr {
  font-size: 22px; font-weight: 800; color: var(--navy);
  padding-bottom: 10px; margin-bottom: 16px;
  border-bottom: 2px solid var(--border); position: relative;
}
.pub-year-hdr::after {
  content: ''; position: absolute; bottom: -2px; left: 0;
  width: 32px; height: 2px; background: var(--accent);
}

.pub-entry {
  display: flex; gap: 16px; padding: 18px 20px;
  border: 1px solid var(--border); border-radius: var(--r);
  margin-bottom: 10px; transition: var(--t); border-left: 4px solid transparent;
}
.pub-entry:hover { border-left-color: var(--accent); box-shadow: 0 4px 16px rgba(0,0,0,.07); background: #fafbfc; }
.pe-num { font-size: 13px; font-weight: 700; color: var(--muted); min-width: 22px; padding-top: 2px; }
.pe-body { flex: 1; }
.pe-title { font-size: 15px; font-weight: 600; color: var(--navy); margin-bottom: 5px; line-height: 1.45; }
.pe-title a { color: var(--link); transition: var(--t); }
.pe-title a:hover { text-decoration: underline; color: var(--link-h); }
.pe-authors { font-size: 13.5px; color: var(--muted); margin-bottom: 4px; line-height: 1.5; }
.pe-authors strong { color: var(--text); font-weight: 600; }
.pe-journal { font-size: 13px; color: var(--muted); font-style: italic; }
.pe-tags { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; }

/* ======================================================
   MEMBERS PAGE
   ====================================================== */
.pi-card {
  display: flex; gap: 36px; align-items: flex-start;
  background: #fff; border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 36px; margin-bottom: 48px;
  box-shadow: 0 2px 12px rgba(0,0,0,.05);
}
.pi-photo {
  width: 160px; height: 192px; flex-shrink: 0;
  border-radius: var(--r); border: 2px solid var(--border); overflow: hidden;
}
.pi-photo img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.pi-body  { flex: 1; }
.pi-name  { font-size: 26px; font-weight: 800; color: var(--navy); margin-bottom: 6px; }
.pi-pos   { font-size: 15px; color: var(--muted); line-height: 1.55; margin-bottom: 14px; }
.pi-bio   { font-size: 14.5px; color: var(--text); line-height: 1.7; max-width: 560px; }
.pi-badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 700; letter-spacing: .8px; text-transform: uppercase; color: var(--accent); margin-bottom: 14px; }

.pi-links { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 18px; }
.pa-primary {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600; padding: 8px 16px; border-radius: 5px;
  background: var(--accent); color: #fff; transition: var(--t);
}
.pa-primary:hover { background: var(--accent-h); }
.pa-secondary {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600; padding: 7px 14px; border-radius: 5px;
  background: var(--bg-alt); color: var(--text);
  border: 1px solid var(--border); transition: var(--t);
}
.pa-secondary:hover { border-color: var(--navy); color: var(--navy); }

.collab-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.collab-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--r);
  padding: 22px; transition: var(--t);
}
.collab-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.08); }
.collab-name { font-size: 16px; font-weight: 700; color: var(--navy); margin-bottom: 3px; }
.collab-role { font-size: 12.5px; color: var(--accent); font-weight: 600; margin-bottom: 10px; }
.collab-desc { font-size: 13.5px; color: var(--muted); line-height: 1.6; }

.prospective-box {
  background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 36px; border-left: 4px solid var(--accent);
}
.pb-inner {}
.prospective-box h3 { font-size: 22px; font-weight: 700; color: var(--navy); margin-bottom: 12px; }
.prospective-box p  { font-size: 15px; color: var(--muted); line-height: 1.70; max-width: 600px; margin-bottom: 18px; }
.prospective-box ul { margin: 12px 0 20px; }
.prospective-box ul li { font-size: 14.5px; color: var(--text); padding: 4px 0 4px 20px; position: relative; }
.prospective-box ul li::before { content: '→'; position: absolute; left: 0; color: var(--accent); font-weight: 700; }

/* ======================================================
   CONFERENCES PAGE
   ====================================================== */
.conf-list { display: flex; flex-direction: column; gap: 20px; margin-top: 8px; }
.conf-item {
  background: #fff; border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 28px 32px; display: flex; gap: 24px; align-items: flex-start;
  border-left: 4px solid var(--border); transition: var(--t);
}
.conf-item:hover { box-shadow: 0 4px 20px rgba(0,0,0,.08); }
.conf-featured { border-left-color: var(--accent); background: #fefaf8; }
.conf-meta { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; min-width: 130px; flex-shrink: 0; }
.conf-tag { font-size: 11px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; padding: 4px 10px; border-radius: 99px; }
.conf-date { font-size: 13px; font-weight: 700; color: var(--muted); }
.conf-body { flex: 1; }
.conf-title { font-size: 17px; font-weight: 700; color: var(--navy); line-height: 1.35; margin-bottom: 10px; }
.conf-venue { font-size: 14px; color: var(--muted); line-height: 1.65; margin-bottom: 12px; }
.conf-venue strong { color: var(--text); }
.conf-link { font-size: 13px; font-weight: 600; color: var(--link); }
.conf-link:hover { text-decoration: underline; }

/* ======================================================
   ACTIVITIES PAGE
   ====================================================== */
.year-divider { display: flex; align-items: center; gap: 20px; margin: 52px 0 36px; }
.year-divider:first-child { margin-top: 0; }
.year-divider span { font-size: 20px; font-weight: 800; color: var(--navy); white-space: nowrap; }
.year-divider::after { content: ''; flex: 1; height: 2px; background: var(--border); border-radius: 1px; }

.activity-block { margin-bottom: 64px; }
.activity-block:last-child { margin-bottom: 0; }
.act-header { margin-bottom: 24px; }
.act-title { font-size: 26px; font-weight: 800; color: var(--navy); margin: 6px 0 8px; }
.act-meta { font-size: 13.5px; color: var(--accent); font-weight: 600; margin-bottom: 8px; }
.act-desc { font-size: 15px; color: var(--muted); line-height: 1.68; max-width: 680px; }

.sl-conference, .sl-invited, .sl-workshop { display: inline-block; padding: 3px 12px; border-radius: 20px; margin-bottom: 12px; }
.sl-conference { background: #EEF2FF; color: #3730A3; }
.sl-invited    { background: #FEF3C7; color: #92400E; }
.sl-workshop   { background: #D1FAE5; color: #065F46; }

.act-gallery { display: grid; gap: 16px; }
.act-gallery-1 { grid-template-columns: 1fr; max-width: 720px; }
.act-gallery-2 { grid-template-columns: 1fr 1fr; }
.act-gallery-3 { grid-template-columns: 1fr 1fr 1fr; }
.act-photo { border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--border); background: #E8ECEF; cursor: zoom-in; aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center; }
.act-photo img { width: 100%; height: 100%; object-fit: contain; display: block; transition: var(--t); }
.act-photo:hover img { transform: scale(1.03); }

@media (max-width: 768px) {
  .act-gallery-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .act-gallery-2, .act-gallery-3 { grid-template-columns: 1fr; }
}

/* Lightbox */
.lb-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.88); z-index: 9999; align-items: center; justify-content: center; }
.lb-overlay.open { display: flex; }
.lb-overlay img { max-width: 92vw; max-height: 90vh; object-fit: contain; border-radius: 6px; box-shadow: 0 8px 40px rgba(0,0,0,.6); }
.lb-close { position: fixed; top: 18px; right: 24px; font-size: 38px; color: #fff; cursor: pointer; line-height: 1; opacity: .85; }
.lb-close:hover { opacity: 1; }

/* ======================================================
   CONTACT PAGE
   ====================================================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-main { display: flex; flex-direction: column; gap: 20px; }
.contact-sidebar { display: flex; flex-direction: column; gap: 20px; }

.ci-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--r);
  padding: 24px; transition: var(--t);
}
.ci-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.07); }
.ci-card h3 {
  font-size: 15px; font-weight: 700; color: var(--navy);
  margin-bottom: 10px; display: flex; align-items: center; gap: 9px;
}
.ci-card h3 i { color: var(--accent); }
.ci-card p { font-size: 14px; color: var(--muted); line-height: 1.65; }
.ci-addr { font-size: 15px; font-weight: 600; color: var(--link); margin-top: 8px; display: inline-block; }
.ci-addr:hover { text-decoration: underline; }

.ci-profiles { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.ci-profile-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600; padding: 7px 13px; border-radius: 5px;
  background: var(--bg-alt); color: var(--text); border: 1px solid var(--border); transition: var(--t);
}
.ci-profile-link:hover { border-color: var(--navy); color: var(--navy); }
.ci-profile-link i { color: var(--accent); }

.ci-block h3 { font-size: 20px; font-weight: 700; color: var(--navy); margin-bottom: 22px; }
.ci-item { display: flex; gap: 14px; margin-bottom: 22px; }
.ci-icon {
  width: 42px; height: 42px; background: rgba(200,67,15,.10); border-radius: 8px;
  display: grid; place-items: center; color: var(--accent); font-size: 17px; flex-shrink: 0;
}
.ci-label { font-size: 11.5px; font-weight: 700; letter-spacing: .8px; text-transform: uppercase; color: var(--muted); margin-bottom: 3px; }
.ci-val   { font-size: 15px; color: var(--text); }
.ci-val a { color: var(--link); transition: var(--t); }
.ci-val a:hover { text-decoration: underline; }

.collab-box { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 32px; }
.collab-box h3 { font-size: 20px; font-weight: 700; color: var(--navy); margin-bottom: 12px; }
.collab-box p  { font-size: 14.5px; color: var(--muted); line-height: 1.72; margin-bottom: 10px; }
.collab-box ul { margin: 0 0 16px; padding-left: 0; }
.collab-box ul li { font-size: 14px; color: var(--text); padding: 4px 0 4px 20px; position: relative; }
.collab-box ul li::before { content: '→'; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.collab-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }

/* ======================================================
   NEWS PAGE
   ====================================================== */
.news-entries { margin-top: 8px; }
.ne-item { display: flex; gap: 20px; padding: 24px 0; border-bottom: 1px solid var(--border); }
.ne-item:first-child { padding-top: 0; }
.ne-date  { min-width: 82px; font-size: 12px; font-weight: 700; color: var(--accent); padding-top: 3px; }
.ne-icon  { width: 38px; height: 38px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: 8px; display: grid; place-items: center; font-size: 16px; flex-shrink: 0; }
.ne-body  {}
.ne-title { font-size: 16px; font-weight: 700; color: var(--navy); margin-bottom: 5px; line-height: 1.35; }
.ne-desc  { font-size: 14px; color: var(--muted); line-height: 1.62; }
.ne-link  { display: inline-block; margin-top: 8px; font-size: 13px; font-weight: 600; color: var(--link); }
.ne-link:hover { text-decoration: underline; }

/* ======================================================
   FOOTER
   ====================================================== */
.footer { background: var(--navy); padding: 56px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 44px; }
.footer-brand .nav-logo { margin-bottom: 14px; }
.footer-brand p { font-size: 13.5px; line-height: 1.72; color: rgba(255,255,255,.48); max-width: 270px; }
.footer-col h4 { font-size: 11px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; color: rgba(255,255,255,.33); margin-bottom: 16px; }
.footer-col li { margin-bottom: 9px; }
.footer-col a { font-size: 13.5px; color: rgba(255,255,255,.58); transition: var(--t); }
.footer-col a:hover { color: #fff; }
.footer-col .fc-txt { font-size: 13.5px; color: rgba(255,255,255,.40); line-height: 1.55; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08); padding-top: 22px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: rgba(255,255,255,.28);
}
.social-row { display: flex; gap: 9px; margin-top: 16px; }
.social-row a {
  width: 34px; height: 34px; border-radius: 6px;
  background: rgba(255,255,255,.08); color: rgba(255,255,255,.58);
  display: grid; place-items: center; font-size: 15px; transition: var(--t);
}
.social-row a:hover { background: var(--accent); color: #fff; }

/* ======================================================
   RESPONSIVE
   ====================================================== */
@media (max-width: 900px) {
  .nav-links  { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex; flex-direction: column; gap: 2px;
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: var(--navy); padding: 12px 16px 20px;
    border-top: 1px solid rgba(255,255,255,.08);
    max-height: calc(100vh - var(--nav-h)); overflow-y: auto;
  }
  .nav-links.open > li > a { font-size: 15px; padding: 11px 13px; }
  .dd-menu { display: none !important; }

  .hero .hi      { flex-direction: column-reverse; gap: 32px; text-align: center; }
  .hero-content h1 { font-size: 40px; }
  .hero-vision   { border-left: none; padding-left: 0; text-align: center; margin: 0 auto 28px; }
  .hero-actions  { justify-content: center; }
  .hero-photo img { width: 220px; height: 270px; }

  .res-grid           { grid-template-columns: 1fr; }
  .res-overview-grid  { grid-template-columns: 1fr; }
  .about-snap         { grid-template-columns: 1fr; }
  .prof-photo-sm      { display: none; }
  .about-body         { grid-template-columns: 1fr; }
  .profile-grid       { flex-direction: column; gap: 28px; }
  .pb-body            { grid-template-columns: 1fr; }
  .pb-figure          { border-left: none; border-top: 1px solid var(--border); }
  .contact-grid       { grid-template-columns: 1fr; }
  .footer-grid        { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom      { flex-direction: column; gap: 6px; text-align: center; }
  .s-title            { font-size: 26px; }
  .method-strip       { flex-direction: column; gap: 24px; }
  .method-icons       { margin-left: 0; }
  .pi-card            { flex-direction: column; gap: 24px; }
  .collab-grid        { grid-template-columns: 1fr 1fr; }
  .dl-item            { flex-direction: column; }
  .dl-actions         { flex-direction: row; min-width: 0; }
}

@media (max-width: 700px) {
  .collab-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .section        { padding: 56px 0; }
  .page-header    { padding: calc(var(--nav-h) + 32px) 0 32px; }
  .page-header h1 { font-size: 26px; }
  .profile-hero   { padding: calc(var(--nav-h) + 32px) 0 40px; }
  .profile-name   { font-size: 28px; }
  .pub-entry      { flex-direction: column; gap: 8px; }
  .pb-header      { flex-direction: column; gap: 10px; }
  .hero .hi       { padding: 0 16px; }
  .hero-content h1 { font-size: 32px; }
  .pub-stats      { gap: 20px; }
}