:root{
  --bg:#f2f1ee;
  --surface:#ffffff;
  --ink:#151514;
  --muted:#767471;
  --line:#c5bebe;
  --accent:#e7692a;
  --accent-2:#ff7a41;
  --shadow: 0 18px 50px rgba(21,21,20,.08);
  --shadow-soft: 0 10px 28px rgba(21,21,20,.06);
  --radius: 18px;
  --radius-lg: 26px;
  --container: 1120px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
}

a{ color: inherit; text-decoration: none; }
a:hover{ text-decoration: none; }

.skip-link{
  position: absolute;
  left: -9999px;
  top: 12px;
  background: var(--surface);
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
  z-index: 9999;
}
.skip-link:focus{ left: 12px; }

.container{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 22px;
}

.muted{ color: var(--muted); }
.sr-only{
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip: rect(0, 0, 0, 0);
  border:0;
}

.topbar{
  position: sticky;
  top:0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(242,241,238,.72);
  border-bottom: 1px solid rgba(197,190,188,.55);
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content: space-between;
  height: 68px;
  gap: 14px;
}

.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: .2px;
}
.brand-mark{
  width: 34px;
  height: 34px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: radial-gradient(circle at 30% 30%, rgba(231,105,42,.35), rgba(231,105,42,0)) , var(--surface);
  box-shadow: var(--shadow-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.brand-k{
  font-size: 20px;
  font-weight: 400;
  color: var(--accent);
  font-family:  "Georgia", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  letter-spacing: 0;
  padding: 0;
  line-height: 1;
  position: relative;
  /* z-index: 1; */
  background: linear-gradient(135deg, var(--accent) 0%, rgba(231,105,42,.7) 50%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 8px rgba(231,105,42,.4));
}

.brand-text{ font-size: 15px; }

.nav{
  display:flex;
  align-items:center;
  gap: 18px;
  font-size: 14px;
}
.nav a{
  padding: 10px 10px;
  border-radius: 999px;
  transition: background .2s ease, transform .2s ease;
}
.nav a:hover{
  background: rgba(255,255,255,.75);
  transform: translateY(-1px);
}
.nav-cta{
  background: var(--accent);
  color: #fff;
  padding: 10px 14px;
  box-shadow: 0 10px 20px rgba(231,105,42,.25);
}
.nav-cta:hover{
  background: var(--accent-2);
}

.nav-toggle{
  display:none;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid rgba(197,190,188,.75);
  background: rgba(255,255,255,.75);
  box-shadow: var(--shadow-soft);
  padding: 10px;
}
.nav-toggle span{
  display:block;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  margin: 5px 0;
}

.hero{
  padding: 64px 0 30px;
  position: relative;
  overflow: hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset: -240px -160px auto auto;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle at 35% 35%, rgba(231,105,42,.24), rgba(231,105,42,0) 62%);
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  inset: auto auto -260px -160px;
  width: 640px;
  height: 640px;
  background: radial-gradient(circle at 40% 40%, rgba(21,21,20,.10), rgba(21,21,20,0) 62%);
  pointer-events:none;
}

.hero-grid{
  display:grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 34px;
  align-items: center;
}

.kicker{
  display:inline-flex;
  align-items:center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--muted);
}
.kicker::before{
  content:"";
  width: 10px;
  height: 10px;
  border-radius: 99px;
  background: var(--accent);
  box-shadow: 0 10px 20px rgba(231,105,42,.25);
}

.hero h1{
  margin: 14px 0 10px;
  font-size: clamp(40px, 5vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.02em;
}
.lead{
  margin: 0 0 18px;
  font-size: 16px;
  max-width: 56ch;
}

.hero-actions{
  display:flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 18px 0 18px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 999px;
  font-weight: 650;
  font-size: 14px;
  border: 1px solid rgba(197,190,188,.9);
  background: rgba(255,255,255,.72);
  box-shadow: var(--shadow-soft);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border .2s ease;
}
.btn:hover{
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.btn.primary{
  background: var(--accent);
  border-color: rgba(231,105,42,.8);
  color:#fff;
  box-shadow: 0 14px 30px rgba(231,105,42,.28);
}
.btn.primary:hover{
  background: var(--accent-2);
}
.btn.ghost{
  background: rgba(255,255,255,.72);
  transition: all .22s ease;
}

.btn.ghost:hover{
  background: rgba(231,105,42,.12);
  border-color: rgba(231,105,42,.4);
  color: var(--accent);
}

.hero-stats{
  display:flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.stat{
  flex: 1 1 160px;
  min-width: 150px;
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(197,190,188,.75);
  border-radius: var(--radius);
  padding: 14px 14px 12px;
  box-shadow: var(--shadow-soft);
}
.stat-num{
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.stat-label{
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
}

.hero-media{
  position: relative;
  min-height: 420px;
}
.avatar-card{
  background: var(--surface);
  /* border: 1px solid var(--line); */
  border-radius: var(--radius-lg);
  padding: 10px;
  box-shadow: var(--shadow);
  width: min(340px, 100%);
  aspect-ratio: 3 / 4;
  overflow: hidden;
  margin-left: clamp(12px, 2.5vw, 30px);
}
.avatar-card img{
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
  border-radius: 22px;
}

.floating-card{
  position:absolute;
  right: 16px;
  bottom: -10px;
  width: min(320px, 84%);
  background: rgba(255,255,255,.85);
  border: 1px solid rgba(197,190,188,.85);
  border-radius: 22px;
  padding: 16px 16px 14px;
  box-shadow: var(--shadow);
  transform: rotate(2deg);
}
.floating-title{
  font-weight: 800;
  margin-bottom: 10px;
}
.floating-row{
  display:flex;
  align-items:center;
  gap: 10px;
  padding: 8px 0;
  border-top: 1px dashed rgba(197,190,188,.75);
  color: var(--muted);
}
.floating-row:first-of-type{ border-top: 0; }
.dot{
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--accent);
}

.hero-scroll{
  display:flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
  margin-top: 34px;
}
.scroll-ring{
  width: 30px;
  height: 30px;
  border-radius: 99px;
  border: 1px solid rgba(197,190,188,.9);
  position: relative;
  background: rgba(255,255,255,.45);
}
.scroll-ring::after{
  content:"";
  position:absolute;
  left: 50%;
  top: 7px;
  width: 6px;
  height: 6px;
  border-radius: 99px;
  background: var(--accent);
  transform: translateX(-50%);
  animation: floatDot 1.3s ease-in-out infinite;
}
@keyframes floatDot{
  0%{ transform: translate(-50%, 0); opacity:.9; }
  70%{ transform: translate(-50%, 12px); opacity:.25; }
  100%{ transform: translate(-50%, 0); opacity:.9; }
}

.section{
  padding: 66px 0;
}

#patents.section,
#skills.section,
#publications.section,
#honors.section{
  padding-top: 40px;
  padding-bottom: 40px;
}

#reviewer.section,
#visitor-stats.section{
  padding-top: 40px;
}
.section.alt{
  background: rgba(255,255,255,.34);
  border-top: 1px solid rgba(197,190,188,.55);
  border-bottom: 1px solid rgba(197,190,188,.55);
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content: space-between;
  gap: 22px;
  margin-bottom: 22px;
}
.section-head h2{
  margin:0;
  font-size: 28px;
  letter-spacing: -0.01em;
}
.section-head p{ margin:0; max-width: 60ch; }

.grid-2{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.skills-grid{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card{
  background: rgba(255,255,255,.82);
  border: 1px solid rgba(197,190,188,.75);
  border-radius: var(--radius-lg);
  padding: 18px 18px 16px;
  box-shadow: var(--shadow-soft);
}
.card h3{
  margin: 0 0 12px;
  font-size: 18px;
}

/* Collapsible sections */
.collapsible-header{
  cursor: pointer;
  user-select: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0 0 12px;
  font-size: 18px;
  transition: color .2s ease;
}

.collapsible-header:hover{
  color: var(--accent);
}

.collapse-icon{
  font-size: 14px;
  transition: transform .3s ease;
  color: var(--muted);
}

.collapsible-header.collapsed .collapse-icon{
  transform: rotate(-90deg);
}

.collapsible-content{
  position: relative;
  overflow: hidden;
  transition: max-height .4s ease;
}

.collapsible-content::after{
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,.95));
  pointer-events: none;
  opacity: 1;
  transition: opacity .3s ease;
}

.collapsible-content.expanded::after{
  opacity: 0;
}

.collapsible-content.collapsed{
  max-height: 280px; /* Show approximately 3 timeline items */
}

.collapsible-content.expanded{
  max-height: 2000px;
}

.timeline{
  margin:0;
  padding-left: 18px;
}
.timeline li{
  padding: 10px 0;
}
.time{
  color: var(--muted);
  font-size: 13px;
}
.what strong{
  display:block;
  margin-top: 4px;
}
.what span{
  display:block;
  color: var(--muted);
  margin-top: 4px;
}

.pill-grid{
  display:flex;
  flex-wrap: wrap;
  gap: 8px;
}
.pill{
  padding: 7px 12px;
  border-radius: 12px;
  border: 1px solid rgba(197,190,188,.5);
  background: rgba(255,255,255,.6);
  font-size: 13px;
  transition: background .22s ease, border .22s ease, color .22s ease, transform .22s ease, box-shadow .22s ease;
  cursor: default;
}

.pill:hover{
  background: rgba(231,105,42,.12);
  border-color: rgba(231,105,42,.4);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(231,105,42,.2);
}
.note{
  margin-top: 14px;
  border-top: 1px dashed rgba(197,190,188,.8);
  padding-top: 12px;
}
.note-title{
  font-weight: 800;
  margin-bottom: 6px;
}

.feature-grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.feature{
  background: rgba(255,255,255,.82);
  border: 1px solid rgba(197,190,188,.75);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-soft);
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border .22s ease;
}
.feature:hover{
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(231,105,42,.22);
  background: rgba(255,255,255,.95);
}
.feature-icon{
  width: 40px;
  height: 40px;
  border-radius: 14px;
  border: 1px solid rgba(197,190,188,.85);
  background: radial-gradient(circle at 35% 35%, rgba(231,105,42,.35), rgba(231,105,42,0)) , rgba(255,255,255,.75);
  box-shadow: var(--shadow-soft);
  margin-bottom: 12px;
}
.feature h3{ margin: 0 0 6px; font-size: 16px; }
.feature p{ margin: 0; }

/* Inline feature icon with title */
.feature-title{
  display:flex;
  align-items:center;
  gap: 10px;
  margin-bottom: 8px;
}
.feature-title .feature-icon{
  width: 22px;
  height: 22px;
  margin: 0;
  border: 0;
  background: none;
  box-shadow: none;
}
.feature-title .feature-icon svg{
  width: 100%;
  height: 100%;
  fill: var(--accent);
}

/* Hero actions: primary turns orange on hover only */
.hero-actions .btn.primary{
  background: rgba(255,255,255,.72);
  border-color: rgba(197,190,188,.9);
  color: var(--ink);
  box-shadow: var(--shadow-soft);
}
.hero-actions .btn.primary:hover{
  background: var(--accent);
  border-color: rgba(231,105,42,.8);
  color: #fff;
  box-shadow: 0 14px 30px rgba(231,105,42,.28);
}

.pub-toolbar{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.filters{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip{
  border: 1px solid rgba(197,190,188,.85);
  background: rgba(255,255,255,.66);
  border-radius: 999px;
  padding: 10px 12px;
  font-weight: 700;
  font-size: 13px;
  cursor:pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.chip:hover{
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}
.chip.active{
  background: var(--accent);
  border-color: rgba(231,105,42,.8);
  color: #fff;
  box-shadow: 0 12px 26px rgba(231,105,42,.25);
}

.searchbox{
  display:flex;
  align-items:center;
  gap: 10px;
}
.searchbox input{
  width: min(420px, 74vw);
  padding: 12px 14px;
  border-radius: 999px;
  border: 1px solid rgba(197,190,188,.9);
  background: rgba(255,255,255,.75);
  box-shadow: var(--shadow-soft);
  outline: none;
  font-size: 14px;
}
.searchbox input:focus{
  border-color: rgba(231,105,42,.85);
  box-shadow: 0 0 0 6px rgba(231,105,42,.12);
}
.count{
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}

.paper-grid{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.paper-card{
  background: rgba(255,255,255,.86);
  border: 1px solid rgba(197,190,188,.75);
  border-radius: var(--radius-lg);
  overflow:hidden;
  box-shadow: var(--shadow-soft);
  transition: transform .22s ease, box-shadow .22s ease;
}
.paper-card:hover{
  transform: translateY(-4px);
  box-shadow: var(--accent-2);
  border-color: rgba(231,105,42,.22);
}
.paper-media{
  aspect-ratio: 16 / 9;
  background: rgba(197,190,188,.25);
  border-bottom: 1px solid rgba(197,190,188,.6);
}
.paper-media img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display:block;
}
.paper-body{
  padding: 14px 16px 16px;
}
.paper-top{
  display:flex;
  justify-content: space-between;
  align-items:center;
  gap: 10px;
  margin-bottom: 8px;
}
.paper-meta{
  font-size: 13px;
  color: var(--accent);
}
.paper-category{
  font-size: 11px;
  font-weight: 150;
  color: var(--accent);
  background: rgba(231,105,42,.10);
  border: 1px solid rgba(231,105,42,.18);
  padding: 5px 7px;
  border-radius: 999px;
}
.paper-title{
  margin: 0 0 6px;
  font-size: 16px;
  line-height: 1.22;
}
.paper-authors{
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 13px;
}
.tag-row{
  display:flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}
.tag{
  font-size: 10px;
  color: var(--muted);
  border: 1px solid rgba(197,190,188,.85);
  background: rgba(255,255,255,.62);
  padding: 5px 8px;
  border-radius: 999px;
}

.paper-details{
  border-top: 1px dashed rgba(197,190,188,.8);
  padding-top: 10px;
}
.paper-details summary{
  cursor:pointer;
  font-weight: 800;
  color: var(--ink);
  font-size: 13px;
}
.paper-points{
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 13px;
}
.paper-points li{ margin: 6px 0; }

.callout{
  margin-top: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(231,105,42,.25);
  background: rgba(231,105,42,.06);
  padding: 16px 16px 14px;
}
.callout-title{
  font-weight: 900;
  margin-bottom: 6px;
}

.list{
  margin:0;
  padding-left: 18px;
}
.list li{ margin: 10px 0; }

.list.cols{
  column-count: 2;
  column-gap: 30px;
}
.list.cols li{
  break-inside: avoid;
}

.job-time{
  color: var(--muted);
  font-size: 13px;
}
.job-title{
  font-weight: 900;
  margin-top: 8px;
}
.job-role{ margin-top: 4px; }

.lang-row{
  display:flex;
  justify-content: space-between;
  gap: 10px;
  font-weight: 800;
  margin-bottom: 12px;
}
.lang-bars .bar{
  position: relative;
  height: 14px;
  border-radius: 999px;
  border: 1px solid rgba(197,190,188,.85);
  background: rgba(255,255,255,.62);
  margin: 12px 0 18px;
  overflow:hidden;
}
.lang-bars .bar span{
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  background: linear-gradient(90deg, rgba(231,105,42,.65), rgba(231,105,42,.20));
}
.lang-bars .bar em{
  position:absolute;
  top: 16px;
  left: 4px;
  font-size: 12px;
  color: var(--muted);
  font-style: normal;
}

.contact-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.contact-card{
  background: rgba(255,255,255,.86);
  border: 1px solid rgba(197,190,188,.75);
  border-radius: var(--radius-lg);
  padding: 18px 18px 16px;
  box-shadow: var(--shadow-soft);
}
.contact-card h3{
  margin: 0 0 12px;
}
.contact-row{
  display:flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px dashed rgba(197,190,188,.8);
}
.contact-row:first-of-type{ border-top: 0; }
.contact-label{ color: var(--muted); }
.contact-value{ font-weight: 800; }
.contact-actions{
  display:flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.signature{
  margin-top: 14px;
  display:flex;
  align-items:center;
  gap: 12px;
  border-top: 1px dashed rgba(197,190,188,.8);
  padding-top: 12px;
}
.sig-mark{
  width: 44px;
  height: 44px;
  border-radius: 16px;
  border: 1px solid rgba(197,190,188,.85);
  background: radial-gradient(circle at 35% 35%, rgba(231,105,42,.35), rgba(231,105,42,0)) , rgba(255,255,255,.75);
  box-shadow: var(--shadow-soft);
}
.sig-name{ font-weight: 950; }

.footer{
  padding: 24px 0 10px;
  text-align:center;
}

/* Extra interaction and components */
.btn{ font-family: inherit; cursor: pointer; }
.btn.small{ padding: 10px 12px; font-size: 13px; }
.btn.copied{ box-shadow: 0 0 0 6px rgba(231,105,42,.12); }

.hover-lift{
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border .22s ease;
}
.hover-lift:hover{
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.paper-actions{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 6px 0 10px;
}

.paper-meta{
  display:flex;
  align-items:center;
  gap: 6px;
  font-size: 13px;
}
.paper-meta .paper-date{
  color: var(--accent);
  font-weight: 900;
}
.paper-meta .paper-venue{
  color: var(--muted);
}
.paper-authors strong{ font-weight: 900; }

/* Screenshot card */
.screenshot-card img{
  width: 100%;
  height: auto;
  display:block;
  border-radius: 18px;
  border: 1px solid rgba(197,190,188,.75);
  box-shadow: var(--shadow-soft);
  transition: transform .28s ease;
}
.screenshot-card:hover img{
  transform: scale(1.02);
}

.paper-abstract{
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.award-list{
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.award-list.cols{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.award-item{
  display:flex;
  gap: 12px;
  align-items:flex-start;
  padding: 12px;
  border-radius: 18px;
  border: 1px solid rgba(197,190,188,.75);
  background: rgba(255,255,255,.62);
  box-shadow: var(--shadow-soft);
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border .22s ease;
}
.award-item:hover{
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: rgba(231,105,42,.22);
}

.award-item.compact{
  padding: 10px;
  border-radius: 16px;
}

.award-date{
  min-width: 78px;
  text-align:center;
  font-weight: 900;
  font-size: 12px;
  color: var(--accent);
  background: rgba(231,105,42,.10);
  border: 1px solid rgba(231,105,42,.18);
  padding: 6px 10px;
  border-radius: 999px;
}

.award-title{
  font-weight: 950;
  margin-bottom: 4px;
}

.award-note{
  font-size: 13px;
}

@media (max-width: 980px){
  .award-list.cols{ grid-template-columns: 1fr; }
}

.drawing-scroller{
  margin-top: 8px;
  display:flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
}
.drawing-thumb{
  flex: 0 0 min(180px, 80vw);
  border-radius: 18px;
  border: 1px solid rgba(197,190,188,.75);
  background: rgba(242,241,238,.9);
  box-shadow: var(--shadow-soft);
  object-fit: cover;
  height: 260px;
}

/* Competition layout - A0 portrait optimized, horizontal scroll */
.competition-list-horizontal{
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  gap: 20px;
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 16px;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.competition-list-horizontal::-webkit-scrollbar {
  height: 0;
}

.competition-list-horizontal::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 0;
}

.competition-list-horizontal::-webkit-scrollbar-thumb {
  background: transparent;
  border-radius: 0;
}

.competition-list-horizontal::-webkit-scrollbar-thumb:hover {
  background: rgba(231,105,42,.6);
}

.competition-item{
  flex: 0 0 420px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid rgba(197,190,188,.75);
  background: rgba(255,255,255,.62);
  box-shadow: var(--shadow-soft);
  transition: transform .22s ease, box-shadow .22s ease, border .22s ease;
}

.competition-item:hover{
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: rgba(231,105,42,.22);
}

.competition-drawings{
  width: 100%;
  display: flex;
  gap: 12px;
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 8px;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

.competition-drawings::-webkit-scrollbar {
  height: 6px;
}

.competition-drawings::-webkit-scrollbar-track {
  background: rgba(197,190,188,.15);
  border-radius: 3px;
}

.competition-drawings::-webkit-scrollbar-thumb {
  background: rgba(231,105,42,.3);
  border-radius: 3px;
}

.competition-drawings::-webkit-scrollbar-thumb:hover {
  background: rgba(231,105,42,.5);
}

.drawing-a0{
  flex: 0 0 auto;
  width: auto;
  max-height: 450px;
  height: auto;
  border-radius: 12px;
  border: 1px solid rgba(197,190,188,.75);
  background: rgba(242,241,238,.9);
  box-shadow: var(--shadow-soft);
  object-fit: contain;
  cursor: pointer;
  transition: transform .22s ease, box-shadow .22s ease;
}

.drawing-a0:hover{
  transform: scale(1.02);
  box-shadow: var(--shadow);
}

.competition-info{
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.competition-date{
  font-size: 12px;
  font-weight: 900;
  color: var(--accent);
  background: rgba(231,105,42,.10);
  border: 1px solid rgba(231,105,42,.18);
  padding: 6px 12px;
  border-radius: 999px;
  width: fit-content;
}

.competition-title{
  font-weight: 950;
  font-size: 15px;
  line-height: 1.4;
}

@media (max-width: 980px){
  .competition-item{
    flex: 0 0 85vw;
    max-width: 420px;
  }
  
  .drawing-a0{
    max-height: 350px;
  }
}

.timeline{
  margin: 14px 0 0;
  padding: 0 0 0 0;
  list-style: none;
  position: relative;
}
.timeline::before{
  content:"";
  position:absolute;
  left: 13px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: rgba(197,190,188,.75);
}
.timeline-item{
  position: relative;
  display:flex;
  gap: 14px;
  padding: 8px 0 8px 0;
}
.timeline-marker{
  position: relative;
  width: 26px;
  flex: 0 0 26px;
  display:flex;
  align-items:flex-start;
  justify-content:center;
}
.timeline-dot{
  width: 12px;
  height: 12px;
  border-radius: 999px;
  border: 2px solid rgba(231,105,42,.6);
  background: var(--surface);
  box-shadow: 0 0 0 3px rgba(231,105,42,.16);
}
.timeline-content{
  flex: 1;
  min-width: 0;
  padding-bottom: 4px;
}
.timeline-date{
  font-size: 12px;
  font-weight: 900;
  color: var(--accent);
  margin-bottom: 2px;
}
.timeline-title{
  font-weight: 900;
  font-size: 14px;
  margin-bottom: 2px;
}
.timeline-title-normal{
  font-weight: 400;
}
.timeline-note{
  font-size: 13px;
  color: var(--muted);
}


.reveal{
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .65s ease, transform .65s ease;
}
.reveal.is-visible{
  opacity: 1;
  transform: translateY(0);
}

/* Ensure paper cards still lift on hover after reveal animation */
.paper-card.reveal.is-visible:hover{
  transform: translateY(-4px);
}

/* Ensure research feature cards lift on hover after reveal animation */
.feature.reveal.is-visible:hover{
  transform: translateY(-4px);
}

/* Ensure all cards with hover-lift have consistent transition */
.card.hover-lift,
.contact-card.hover-lift,
.screenshot-card.hover-lift{
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border .22s ease;
}

.card.hover-lift:hover,
.contact-card.hover-lift:hover,
.screenshot-card.hover-lift:hover{
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.card.hover-lift.reveal.is-visible:hover,
.contact-card.hover-lift.reveal.is-visible:hover,
.screenshot-card.hover-lift.reveal.is-visible:hover{
  transform: translateY(-4px);
}

/* Patents styling */
.patent-list{
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.patent-item{
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid rgba(197,190,188,.75);
  background: rgba(255,255,255,.82);
  box-shadow: var(--shadow-soft);
  transition: transform .22s ease, box-shadow .22s ease, border .22s ease;
}

.patent-item:hover{
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: rgba(231,105,42,.22);
}

.patent-date{
  min-width: 90px;
  text-align: center;
  font-weight: 900;
  font-size: 13px;
  color: var(--accent);
  background: rgba(231,105,42,.10);
  border: 1px solid rgba(231,105,42,.18);
  padding: 8px 12px;
  border-radius: 999px;
  height: fit-content;
}

.patent-content{
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0px;
}

.patent-title-row{
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0px;
  margin-bottom: 0;
}

.patent-title{
  font-weight: 900;
  font-size: 15px;
  line-height: 1.2;
  flex: 1;
}

.patent-title-row .patent-status{
  flex-shrink: 0;
  margin-top: 2px;
}

.patent-authors{
  font-size: 14px;
  color: var(--muted);
  line-height: 1.2;
  margin-top: -10px;
}

.patent-status{
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  width: fit-content;
  margin-top: 0;
}

.patent-status.status-published{
  background: rgba(231,105,42,.12);
  color: var(--accent);
  border: 1px solid rgba(231,105,42,.25);
}

.patent-status.status-granted{
  background: rgba(76,175,80,.12);
  color: #4caf50;
  border: 1px solid rgba(76,175,80,.25);
}

.patent-status.status-pending{
  background: rgba(255,152,0,.12);
  color: #ff9800;
  border: 1px solid rgba(255,152,0,.25);
}

/* IELTS Card */
.ielts-card-wrapper{
  margin-top: 18px;
}

.ielts-card{
  width: 100%;
  max-width: 100%;
}

.ielts-content{
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.ielts-overall{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 8px;
  background: rgba(231,105,42,.08);
  border-radius: 12px;
  border: 1px solid rgba(231,105,42,.2);
  gap: 8px;
}

.ielts-label{
  font-weight: 400;
  font-size: 14px;
  color: var(--ink);
}

.ielts-score{
  font-size: 17px;
  font-weight: 500;
  color: var(--accent);
}

.ielts-breakdown{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.ielts-item{
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 7px 10px;
  background: rgba(255,255,255,.6);
  border-radius: 10px;
  border: 1px solid rgba(197,190,188,.5);
}

.ielts-skill{
  font-size: 13px;
  color: var(--ink);
}

.ielts-skill-score{
  font-size: 15px;
  font-weight: 500;
  color: var(--accent);
}

/* Reviewer Section - Horizontal Scroll */
.reviewer-list-horizontal{
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  gap: 20px;
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 16px;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.reviewer-list-horizontal::-webkit-scrollbar {
  height: 0;
}

.reviewer-list-horizontal::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 0;
}

.reviewer-list-horizontal::-webkit-scrollbar-thumb {
  background: transparent;
  border-radius: 0;
}

.reviewer-list-horizontal::-webkit-scrollbar-thumb:hover {
  background: rgba(231,105,42,.6);
}

.reviewer-item{
  flex: 0 0 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 18px 12px;
  border-radius: 18px;
  border: 1px solid rgba(197,190,188,.75);
  background: rgba(255,255,255,.82);
  box-shadow: var(--shadow-soft);
  transition: transform .22s ease, box-shadow .22s ease, border .22s ease;
}

.reviewer-item:hover{
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(231,105,42,.22);
}

.reviewer-journal-cover{
  width: 100%;
  max-width: 180px;
  height: 220px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  background: rgba(242,241,238,.9);
}

.reviewer-journal-cover img{
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform .3s ease;
}

.reviewer-item:hover .reviewer-journal-cover img{
  transform: scale(1.05);
}

.reviewer-journal-name{
  font-weight: 700;
  font-size: 14px;
  text-align: center;
  color: var(--ink);
}

.reviewer-journal-meta{
  font-size: 12px;
  text-align: center;
  color: var(--muted);
  line-height: 1.4;
}

/* Visitor Stats */
.visitor-stats-content{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: center;
}

.visitor-count{
  text-align: center;
}

.visitor-count h3{
  margin: 0 0 12px;
  font-size: 15px;
}

.visitor-number{
  font-size: 28px;
  font-weight: 900;
  color: var(--accent);
  margin-bottom: 4px;
}

.visitor-map h3{
  margin: 0 0 12px;
  font-size: 15px;
}

.map-container{
  width: 100%;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  background: rgba(242,241,238,.9);
  border: 1px solid rgba(197,190,188,.75);
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Remove fixed height to let the map image determine height */
/* .map-container{ height: 180px; } */

.map-container iframe,
.map-container #mmvst_globe,
.map-container a,
.map-container img {
  width: 100%;
  height: auto;
  display: block;
  border: none;
}

@media (max-width: 980px){
  .visitor-stats-content{
    grid-template-columns: 1fr;
  }
  
  .ielts-breakdown{
    grid-template-columns: 1fr;
  }
  
  .reviewer-item{
    flex: 0 0 85vw;
    max-width: 200px;
  }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .reveal{ opacity:1; transform:none; transition:none; }
  .scroll-ring::after{ animation:none; }
  .btn, .chip, .feature, .paper-card, .nav a, .hover-lift, .award-item, .paper-media img{ transition:none; }
}

@media (max-width: 980px){
  .hero-grid{ grid-template-columns: 1fr; }
  .feature-grid{ grid-template-columns: repeat(2, 1fr); }
  .paper-grid{ grid-template-columns: 1fr; }
  .grid-2{ grid-template-columns: 1fr; }
  .skills-grid{ grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
  .list.cols{ column-count: 1; }
}

@media (max-width: 760px){
  .nav-toggle{ display:block; }
  .nav{
    position: absolute;
    right: 22px;
    top: 68px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(255,255,255,.92);
    border: 1px solid rgba(197,190,188,.75);
    border-radius: 18px;
    box-shadow: var(--shadow);
    padding: 8px;
    min-width: 220px;
    display:none;
  }
  .nav.open{ display:flex; }
  .nav a{ padding: 12px 12px; }
  .section-head{ flex-direction: column; align-items:flex-start; }
}