/* ===== BASE RESET & VARIABLES ===== */
:root {
  --primary: #0077C8;
  --primary-light: #2196F3;
  --primary-pale: #E3F2FD;
  --accent: #FF6B35;
  --accent-glow: #FF8C5A;
  --accent-pale: #FFF3EE;
  --bg-dark: #0A1628;
  --bg: #F8FBFF;
  --bg-alt: #EAF4FF;
  --card-bg: #ffffff;
  --text: #0D1B2E;
  --text-muted: #5A6E8C;
  --border: #D0E4F7;
  --gradient-hero: linear-gradient(135deg, #0A1628 0%, #0D2847 50%, #0A3060 100%);
  --gradient-accent: linear-gradient(135deg, var(--accent) 0%, var(--accent-glow) 100%);
  --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  --shadow: 0 2px 12px rgba(0,119,200,0.08);
  --shadow-hover: 0 8px 32px rgba(0,119,200,0.14);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }

/* ===== STICKY HEADER ===== */
#sticky-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}

header {
  background: transparent;
  color: var(--text);
  padding: 0.6rem 32px;
}

.navbar-custom {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
  z-index: 1000;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo,
.header-logo {
  height: 42px;
  width: auto;
  max-width: 120px;
  object-fit: contain;
  transition: transform 0.3s;
}

.nav-logo:hover { transform: scale(1.03); }

.navbar-brand,
.brand {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text);
  font-family: 'Sora', sans-serif;
  font-weight: 700;
}

.navbar-brand:hover,
.brand:hover { color: var(--primary); }

.nav-edition-badge {
  background: var(--accent);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 20px;
  margin-left: 6px;
  vertical-align: super;
  letter-spacing: 0.5px;
}

.navbar-collapse {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item { position: relative; }

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text) !important;
  font-family: 'Sora', sans-serif;
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.5rem 1rem !important;
  border-radius: var(--radius-sm);
  letter-spacing: 0.3px;
  transition: all 0.2s;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary) !important;
  background: var(--primary-pale);
}

.dropdown-caret {
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: 2px;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: 0.75;
  transition: transform var(--transition);
}

.nav-item.dropdown:hover .dropdown-caret {
  transform: rotate(180deg);
}

.dropdown-menu-custom {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  display: none;
  min-width: 220px;
  padding: 0.5rem;
  margin: 0;
  list-style: none;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  z-index: 1200;
}

.nav-item.dropdown:hover .dropdown-menu-custom,
.nav-item.dropdown.open .dropdown-menu-custom {
  display: block;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 0.55rem 1rem;
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.2s;
}

.dropdown-item:hover,
.dropdown-item.active {
  background: var(--primary-pale);
  color: var(--primary);
}

.dropdown-item i {
  color: var(--primary);
  width: 18px;
  font-size: 1rem;
  flex-shrink: 0;
}

.nav-register-item {
  margin-left: 0.5rem;
}

.nav-register-btn {
  background: var(--gradient-accent) !important;
  color: #fff !important;
  border-radius: 30px !important;
  padding: 8px 20px !important;
  font-weight: 600 !important;
  font-size: 0.85rem !important;
  box-shadow: 0 4px 16px rgba(255,107,53,0.3);
}

.nav-register-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(255,107,53,0.5);
  color: #fff !important;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.top-nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text);
  font-family: 'Sora', sans-serif;
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0;
}

.top-nav a:hover,
.top-nav a.active {
  color: var(--primary);
  background: var(--primary-pale);
}

.top-nav .dropdown-toggle::after {
  content: '';
  width: 0;
  height: 0;
  margin-top: 2px;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: 0.72;
  transition: transform var(--transition);
}

.nav-group:hover > .dropdown-toggle::after {
  transform: rotate(180deg);
}

.nav-group { position: relative; }

.nav-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  display: none;
  min-width: 230px;
  padding: 0.5rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
}

.nav-group:hover .nav-dropdown { display: grid; gap: 2px; }
.nav-dropdown a {
  display: flex;
  justify-content: flex-start;
  gap: 8px;
  padding: 0.55rem 1rem;
  font-size: 0.88rem;
}

.nav-dropdown a i {
  color: var(--primary);
  font-size: 1rem;
  width: 18px;
  flex-shrink: 0;
}

.nav-register {
  color: #fff !important;
  background: var(--gradient-accent) !important;
  border-radius: 30px !important;
  padding: 8px 20px !important;
  font-size: 0.85rem !important;
  font-weight: 600 !important;
  box-shadow: 0 4px 16px rgba(255,107,53,0.28);
}

.accent { color: var(--accent-glow); }

/* ===== NAV ===== */
nav {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 0 32px;
}

.nav-inner {
  display: flex;
  gap: 6px;
  max-width: 1200px;
  margin: 0 auto;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: #ccc transparent;
}

.subnav-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-family: 'Sora', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 12px 14px 12px 0;
  white-space: nowrap;
}

nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 14px;
  font-size: 0.88em;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 3px solid transparent;
  white-space: nowrap;
  transition: all var(--transition);
}

nav a:hover, nav a.active {
  color: var(--primary);
  border-bottom-color: var(--accent);
}

nav a i { font-size: 0.9em; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

/* ===== HERO ===== */
.hero {
  position: relative;
  background: var(--gradient-hero);
  color: white;
  text-align: center;
  padding: 110px 40px 85px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(0,119,200,0.25) 0%, transparent 60%),
              radial-gradient(ellipse at 72% 28%, rgba(255,107,53,0.18) 0%, transparent 48%);
  animation: heroFloat 20s ease-in-out infinite;
}

@keyframes heroFloat {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(30px, -30px) rotate(1deg); }
  66% { transform: translate(-20px, 20px) rotate(-1deg); }
}

.hero-content { position: relative; z-index: 2; max-width: 800px; margin: 0 auto; }

.hero-badge {
  display: inline-block;
  background: rgba(255,107,53,0.2);
  border: 1px solid rgba(255,107,53,0.5);
  color: var(--accent-glow);
  padding: 5px 16px;
  border-radius: 20px;
  font-size: 0.8em;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.hero-content h2 {
  font-family: 'Sora', sans-serif;
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 900;
  letter-spacing: 0;
  margin-bottom: 12px;
  line-height: 1.1;
}

.hero-tagline {
  font-size: 1.25em;
  opacity: 0.9;
  font-weight: 300;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.hero-desc {
  max-width: 680px;
  margin: 0 auto 36px;
  color: rgba(255,255,255,0.7);
  font-size: 1.05em;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 50px;
  margin-bottom: 40px;
}

.stat {
  min-width: 130px;
  text-align: center;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius);
  padding: 16px 20px;
  backdrop-filter: blur(8px);
}
.stat-number { display: block; font-size: 2em; font-weight: 800; }
.stat-label { font-size: 0.85em; opacity: 0.8; font-weight: 300; }

.hero-cta { display: flex; justify-content: center; gap: 16px; }

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1em;
  transition: all var(--transition);
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-accent);
  color: white;
  border: 0;
  box-shadow: 0 4px 20px rgba(255,107,53,0.35);
}

.btn-primary:hover {
  background: var(--gradient-accent);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(230, 57, 70, 0.4);
}

.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.5);
}

.btn-outline:hover {
  border-color: white;
  background: rgba(255,255,255,0.1);
  color: white;
  transform: translateY(-2px);
}

/* ===== SECTIONS ===== */
.section { padding: 70px 40px; }
.section-alt { background: var(--bg-alt); }

.section-inner {
  max-width: 900px;
  margin: 0 auto;
}

.section-title {
  font-family: 'Sora', sans-serif;
  font-size: 1.8em;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--accent);
}

.section-title i { color: var(--accent); font-size: 0.9em; }

/* ===== CARDS ===== */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.card p { margin-bottom: 16px; color: var(--text); }
.card p:last-child { margin-bottom: 0; }

.info-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, #eff6ff, #dbeafe);
  border: 1px solid #93c5fd;
  border-radius: 8px;
  padding: 16px 20px;
  margin-top: 10px;
  font-weight: 500;
  color: var(--primary);
}

.info-banner i { font-size: 1.3em; color: #f59e0b; }

/* ===== PEOPLE GRID ===== */
.people-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
}

.person-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  width: 240px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.person-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.person-img-wrap {
  width: 140px;
  height: 140px;
  margin: 0 auto 18px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--bg-alt);
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.person-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.placeholder-img {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 3em;
}

.person-card h3 {
  font-size: 1.05em;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--primary);
}

.person-card h3 a { color: var(--primary); }
.person-card h3 a:hover { color: var(--accent); }

.affiliation {
  font-size: 0.88em;
  color: var(--text-muted);
  font-weight: 400;
}

/* ===== ANNOUNCEMENTS ===== */
.announcement-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-bottom: 20px;
  border: 1px solid var(--border);
  border-left: 5px solid var(--primary);
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

.announcement-card:hover { transform: translateX(4px); }

.announcement-card.highlight { border-left-color: var(--accent); }

.announcement-date {
  font-size: 0.85em;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-weight: 500;
}

.announcement-card h3 {
  font-size: 1.15em;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.announcement-card p { color: var(--text); margin: 0; }

/* ===== COMING SOON ===== */
.coming-soon-card {
  text-align: center;
  padding: 50px 30px;
}

.coming-soon-icon {
  font-size: 3em;
  color: var(--primary);
  opacity: 0.3;
  margin-bottom: 16px;
}

.coming-soon-card h3 {
  font-size: 1.4em;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.coming-soon-card p {
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto;
}

/* ===== TIMELINE ===== */
.timeline-container {
  position: relative;
  padding-left: 40px;
}

.timeline-container::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--accent), var(--primary));
  border-radius: 3px;
}

.timeline-item {
  position: relative;
  margin-bottom: 28px;
}

.timeline-dot {
  position: absolute;
  left: -34px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-alt);
  box-shadow: 0 0 0 3px var(--accent);
}

.timeline-content {
  background: var(--card-bg);
  padding: 18px 22px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.timeline-content h4 {
  font-size: 1em;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.timeline-content p { color: var(--text-muted); font-size: 0.95em; margin: 0; }

.timeline-note {
  margin-top: 20px;
  font-size: 0.88em;
  color: var(--text-muted);
}

/* ===== FAQ ===== */
.faq-list { display: flex; flex-direction: column; gap: 12px; }

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

.faq-item:hover { box-shadow: var(--shadow-hover); }

.faq-item summary {
  padding: 18px 22px;
  font-weight: 600;
  cursor: pointer;
  color: var(--primary);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq-item summary::before {
  content: '▸';
  font-size: 1.1em;
  transition: transform var(--transition);
  color: var(--accent);
}

.faq-item[open] summary::before { transform: rotate(90deg); }

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item p {
  padding: 0 22px 18px;
  color: var(--text);
  line-height: 1.7;
}

/* ===== CONTACT ===== */
.contact-grid {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
}

.contact-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 30px 40px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: all var(--transition);
  min-width: 200px;
}

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

.contact-card i {
  font-size: 2em;
  color: var(--primary);
  margin-bottom: 12px;
}

.contact-card h4 {
  font-size: 1em;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}

.contact-card a { font-weight: 500; }

/* ===== FOOTER ===== */
footer {
  background: var(--bg-dark);
  color: white;
  padding: 3rem 40px 1rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(240px, 1.6fr) repeat(3, minmax(150px, 1fr));
  gap: 34px;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-brand img {
  height: 40px;
  object-fit: contain;
  opacity: 0.9;
  margin-bottom: 14px;
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 4px 8px;
}

.footer-brand p {
  max-width: 360px;
  color: rgba(255,255,255,0.55);
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  color: rgba(255,255,255,0.72);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 50%;
}

.footer-social a:hover {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.footer-column {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-column h4 {
  font-family: 'Sora', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.footer-column a,
.footer-column span {
  color: rgba(255,255,255,0.55);
  font-size: 0.88rem;
  line-height: 1.5;
}

.footer-column a:hover { color: var(--accent-glow); }
.footer-column i { width: 18px; color: rgba(255,255,255,0.68); }

.footer-cta {
  align-self: flex-start;
  margin-top: 6px;
  padding: 8px 18px;
  color: #fff !important;
  background: var(--gradient-accent);
  border-radius: 30px;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(255,107,53,0.28);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  max-width: 1200px;
  margin: 34px auto 0;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.36);
  font-size: 0.82em;
}

/* ===== TASK SECTION ===== */
.task-overview h3 {
  font-size: 1.35em;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}

.task-subtitle {
  font-size: 0.95em;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 16px !important;
}

.subsection-title {
  font-size: 1.15em;
  font-weight: 700;
  color: var(--primary);
  margin: 36px 0 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.subsection-title i { color: var(--accent); }

.tracks-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.track-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.track-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 4px;
}

.track-1::before { background: linear-gradient(90deg, var(--accent), #f97316); }
.track-2::before { background: linear-gradient(90deg, var(--primary), #3b82f6); }

.track-number {
  font-size: 0.75em;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.track-card h4 {
  font-size: 1.15em;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.track-card h4 i { color: var(--accent); }
.track-card p { color: var(--text); margin-bottom: 16px; }

.track-io {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 0.85em;
  background: var(--bg-alt);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--text);
}

.io-label {
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  font-size: 0.8em;
  letter-spacing: 0.05em;
}

.track-io code {
  background: rgba(10,36,99,0.08);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--primary);
}

.taxonomy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.taxonomy-item {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

.taxonomy-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

.taxonomy-icon { font-size: 1.6em; color: var(--accent); margin-bottom: 10px; }
.taxonomy-item h4 { font-size: 0.95em; font-weight: 700; color: var(--primary); margin-bottom: 6px; }
.taxonomy-item p { font-size: 0.82em; color: var(--text-muted); line-height: 1.5; }

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.metric-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 22px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.metric-badge {
  display: inline-block;
  font-size: 0.7em;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 50px;
  margin-bottom: 10px;
}

.metric-badge.primary  { background: #fef3c7; color: #92400e; }
.metric-badge.track1   { background: #fee2e2; color: #991b1b; }
.metric-badge.track2   { background: #dbeafe; color: #1e40af; }
.metric-badge.novelty  { background: #f3e8ff; color: #6b21a8; }

.metric-card h4 { font-size: 1.05em; font-weight: 700; color: var(--primary); margin-bottom: 6px; }
.metric-card p  { font-size: 0.87em; color: var(--text-muted); margin: 0; }

.rai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.rai-card {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
}

.rai-card i { font-size: 2em; margin-bottom: 14px; opacity: 0.9; }
.rai-card h4 { font-size: 1.05em; font-weight: 700; margin-bottom: 10px; }
.rai-card p  { font-size: 0.88em; opacity: 0.85; line-height: 1.6; }

/* ===== DATASET TABLE ===== */
.dataset-table-wrap {
  overflow-x: auto;
  margin-top: 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.dataset-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  font-size: 0.92em;
}

.dataset-table th {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  padding: 14px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 0.88em;
  letter-spacing: 0.03em;
}

.dataset-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}

.dataset-table tr:hover td { background: var(--bg-alt); }

.dataset-table .total-row td {
  background: var(--bg-alt);
  font-weight: 700;
  color: var(--primary);
  border-top: 2px solid var(--border);
}

.cat-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88em;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 50px;
  white-space: nowrap;
}

.cat-animal    { background: #fef9c3; color: #854d0e; }
.cat-vehicle   { background: #fee2e2; color: #991b1b; }
.cat-baby      { background: #fce7f3; color: #9d174d; }
.cat-music     { background: #ede9fe; color: #5b21b6; }
.cat-phone     { background: #dbeafe; color: #1e40af; }
.cat-appliance { background: #d1fae5; color: #065f46; }
.cat-human     { background: #ffedd5; color: #7c2d12; }

/* ===== PRIZES ===== */
.prizes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.prize-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.prize-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 4px;
}

.prize-gold::before   { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.prize-silver::before { background: linear-gradient(90deg, var(--primary), #3b82f6); }
.prize-bronze::before { background: linear-gradient(90deg, var(--accent), #f97316); }

.prize-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }

.prize-icon { font-size: 2.5em; margin-bottom: 16px; }
.prize-gold   .prize-icon { color: #f59e0b; }
.prize-silver .prize-icon { color: var(--primary); }
.prize-bronze .prize-icon { color: var(--accent); }

.prize-card h3 { font-size: 1.1em; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.prize-card p  { color: var(--text-muted); font-size: 0.9em; }

/* ===== PIPELINE TRACKS ===== */
.pipeline-wrap {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.pipeline-track {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all var(--transition);
}

.pipeline-track:hover { box-shadow: var(--shadow-hover); }

.pipeline-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 28px;
  color: white;
}

.pipeline-header-1 { background: linear-gradient(135deg, #dc2626, #f97316); }
.pipeline-header-2 { background: linear-gradient(135deg, var(--primary), #3b82f6); }

.pipeline-num {
  font-size: 2em;
  font-weight: 900;
  opacity: 0.3;
  line-height: 1;
}

.pipeline-header h4 {
  font-size: 1.2em;
  font-weight: 800;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pipeline-tag {
  font-size: 0.8em;
  font-weight: 400;
  opacity: 0.85;
}

.pipeline-body {
  padding: 24px 28px;
}

.pipeline-body > p {
  color: var(--text);
  margin-bottom: 20px;
}

.pipeline-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.flow-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 20px;
  background: var(--bg-alt);
  border-radius: 10px;
  border: 2px solid var(--border);
  min-width: 100px;
  transition: all var(--transition);
}

.flow-node i { font-size: 1.4em; color: var(--text-muted); }
.flow-node span { font-size: 0.82em; font-weight: 600; color: var(--text); }

.flow-model {
  background: linear-gradient(135deg, #eff6ff, #dbeafe);
  border-color: #93c5fd;
}
.flow-model i { color: var(--primary); }

.flow-output {
  background: linear-gradient(135deg, #f0fdf4, #dcfce7);
  border-color: #86efac;
}
.flow-output i { color: #16a34a; }

.flow-arrow {
  color: var(--text-muted);
  font-size: 1em;
}

.pipeline-output-sample {
  background: #1e293b;
  border-radius: 8px;
  padding: 10px 16px;
  margin-bottom: 14px;
}

.pipeline-output-sample code {
  color: #a5f3fc;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82em;
  line-height: 1.5;
}

.pipeline-metrics {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.pm-chip {
  display: inline-block;
  font-size: 0.75em;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: 50px;
  background: var(--bg-alt);
  color: var(--primary);
  border: 1px solid var(--border);
}

.pipeline-connector {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  justify-content: center;
}

.connector-line {
  flex: 1;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  max-width: 120px;
}

.connector-label {
  font-size: 0.78em;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
  padding: 4px 14px;
  background: var(--bg-alt);
  border-radius: 50px;
  border: 1px dashed var(--border);
}

/* ===== TAXONOMY LIST ===== */
.taxonomy-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tax-row {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 18px 22px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

.tax-row:hover {
  box-shadow: var(--shadow-hover);
  transform: translateX(4px);
}

.tax-icon-wrap {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2em;
  color: white;
}

.tax-color-1 { background: linear-gradient(135deg, #eab308, #ca8a04); }
.tax-color-2 { background: linear-gradient(135deg, #ef4444, #dc2626); }
.tax-color-3 { background: linear-gradient(135deg, #ec4899, #db2777); }
.tax-color-4 { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.tax-color-5 { background: linear-gradient(135deg, #3b82f6, #2563eb); }
.tax-color-6 { background: linear-gradient(135deg, #10b981, #059669); }
.tax-color-7 { background: linear-gradient(135deg, #f97316, #ea580c); }

.tax-content {
  flex: 1;
  min-width: 0;
}

.tax-content h4 {
  font-size: 1em;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 2px;
}

.tax-content > p {
  font-size: 0.85em;
  color: var(--text-muted);
  margin-bottom: 6px;
  line-height: 1.4;
}

.tax-sublabels {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
}

.tax-sublabels span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7em;
  background: var(--bg-alt);
  color: var(--text-muted);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.tax-hours {
  flex-shrink: 0;
  text-align: center;
  font-size: 0.85em;
  color: var(--text-muted);
  min-width: 55px;
}

.tax-hours strong {
  display: block;
  font-size: 1.4em;
  color: var(--primary);
  font-weight: 800;
}

/* ===== EVALUATION METRICS v2 ===== */
.eval-primary-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.eval-primary-icon {
  flex-shrink: 0;
  font-size: 2.5em;
  opacity: 0.4;
}

.eval-primary-content { flex: 1; }

.eval-primary-content .metric-badge {
  background: rgba(255,255,255,0.2);
  color: white;
}

.eval-primary-content h4 {
  font-size: 1.25em;
  font-weight: 800;
  margin: 8px 0;
}

.eval-primary-content p {
  font-size: 0.92em;
  opacity: 0.9;
  margin: 0;
  line-height: 1.6;
}

.eval-tracks-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 16px;
}

.eval-track-group {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  overflow: hidden;
}

.eval-track-header {
  padding: 12px 20px;
  font-weight: 700;
  font-size: 0.9em;
  color: white;
  display: flex;
  align-items: center;
  gap: 8px;
}

.eval-track-header-1 { background: linear-gradient(135deg, #dc2626, #f97316); }
.eval-track-header-2 { background: linear-gradient(135deg, var(--primary), #3b82f6); }

.eval-track-items { padding: 8px 20px 16px; }

.eval-metric-item {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.eval-metric-item:last-child { border-bottom: none; }

.eval-metric-item h5 {
  font-size: 0.95em;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 2px;
}

.eval-metric-item p {
  font-size: 0.83em;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.5;
}

.eval-ranking-note {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 12px;
  padding: 14px 16px;
  background: linear-gradient(135deg, var(--primary-pale), #fff);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  color: var(--text);
}

.eval-ranking-note i {
  color: var(--accent);
  font-size: 1.1em;
  margin-top: 2px;
  flex-shrink: 0;
}

.eval-ranking-note strong {
  display: block;
  color: var(--primary);
  font-size: 0.88em;
  margin-bottom: 2px;
}

.eval-ranking-note span {
  display: block;
  color: var(--text-muted);
  font-size: 0.84em;
  line-height: 1.5;
}

.eval-novelty-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: linear-gradient(135deg, #faf5ff, #f3e8ff);
  border: 1px solid #d8b4fe;
  border-radius: var(--radius);
  padding: 16px 22px;
  font-size: 0.9em;
  color: #581c87;
  line-height: 1.6;
}

.eval-novelty-card i {
  font-size: 1.5em;
  color: #a855f7;
  flex-shrink: 0;
}

/* ===== RAI v2 ===== */
.rai-cards-v2 {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.rai-card-v2 {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.rai-card-v2:hover {
  box-shadow: var(--shadow-hover);
  transform: translateX(4px);
}

.rai-icon-wrap {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3em;
  color: white;
}

.rai-robust     { background: linear-gradient(135deg, #dc2626, #f97316); }
.rai-inclusive   { background: linear-gradient(135deg, #3b82f6, #06b6d4); }
.rai-transparent { background: linear-gradient(135deg, #8b5cf6, #a855f7); }

.rai-card-body h4 {
  font-size: 1.05em;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.rai-card-body p {
  font-size: 0.88em;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.6;
}

/* ===== RESPONSIVE NEW SECTIONS ===== */
@media (max-width: 768px) {
  .tracks-grid    { grid-template-columns: 1fr; }
  .rai-grid       { grid-template-columns: 1fr; }
  .prizes-grid    { grid-template-columns: 1fr; }
  .taxonomy-grid  { grid-template-columns: repeat(2, 1fr); }
  .metrics-grid   { grid-template-columns: 1fr; }
  .eval-tracks-row { grid-template-columns: 1fr; }
  .pipeline-flow  { gap: 8px; }
  .flow-node      { min-width: 80px; padding: 10px 14px; }
  .tax-row        { flex-wrap: wrap; }
  .tax-hours      { width: 100%; text-align: left; display: flex; gap: 4px; align-items: baseline; }
  .tax-hours strong { display: inline; font-size: 1em; }
  .eval-primary-card { flex-direction: column; text-align: center; }
  .rai-card-v2 { flex-direction: column; }
}

@media (max-width: 480px) {
  .taxonomy-grid { grid-template-columns: 1fr; }
  .tax-sublabels { display: none; }
}

/* ===== PM LABEL ===== */
.pm-label {
  font-size: 0.75em;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-right: 4px;
}

/* ===== CONNECTOR UPDATE ===== */
.pipeline-connector {
  text-align: center;
}

.connector-label {
  font-size: 0.85em;
  color: var(--text-muted);
  font-style: italic;
  padding: 6px 16px;
  line-height: 1.5;
}

.connector-label i {
  color: var(--accent);
  margin-right: 6px;
}

/* ===== PROCESS FLOW ===== */
.process-flow {
  display: flex;
  align-items: flex-start;
  gap: 0;
  margin: 8px 0 8px;
  flex-wrap: wrap;
}

.process-step {
  flex: 1;
  min-width: 160px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 18px;
  text-align: center;
  box-shadow: var(--shadow);
}

.process-step h4 {
  font-size: 0.95em;
  font-weight: 700;
  color: var(--primary);
  margin: 10px 0 6px;
}

.process-step p {
  font-size: 0.82em;
  color: var(--text-muted);
  line-height: 1.5;
}

.process-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2em;
  margin: 0 auto;
  color: white;
}

.process-icon-1 { background: linear-gradient(135deg, #3b82f6, #1d4ed8); }
.process-icon-2 { background: linear-gradient(135deg, #8b5cf6, #6d28d9); }
.process-icon-3 { background: linear-gradient(135deg, #f59e0b, #d97706); }
.process-icon-4 { background: linear-gradient(135deg, var(--accent), #c41230); }

.process-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 8px;
  color: var(--text-muted);
  font-size: 1.1em;
  flex-shrink: 0;
  margin-top: 24px;
}

/* ===== BAR CHART ===== */
.taxonomy-chart-wrap {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  margin-bottom: 4px;
}

.tax-chart {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tax-chart-bar-row {
  display: grid;
  grid-template-columns: 180px 1fr 70px;
  align-items: center;
  gap: 12px;
}

.tax-chart-label {
  font-size: 0.85em;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.tax-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.tax-chart-bar-bg {
  background: var(--bg-alt);
  border-radius: 50px;
  height: 20px;
  overflow: hidden;
}

.tax-chart-bar {
  height: 100%;
  width: var(--bar-pct);
  background: var(--bar-color);
  border-radius: 50px;
  transition: width 1s ease;
  opacity: 0.85;
}

.tax-chart-val {
  font-size: 0.82em;
  font-weight: 600;
  color: var(--text-muted);
  text-align: right;
  white-space: nowrap;
}

.tax-chart-note {
  margin-top: 16px;
  font-size: 0.82em;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tax-chart-note i { color: #3b82f6; }

@media (max-width: 768px) {
  .tax-chart-bar-row { grid-template-columns: 130px 1fr 60px; }
  .process-flow { flex-direction: column; }
  .process-arrow { transform: rotate(90deg); margin: 0 auto; }
  .process-step { min-width: unset; width: 100%; }
}

/* ===== ANIMATIONS ===== */
.animate-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  header { padding: 12px 20px; }

  .nav-logo,
  .header-logo { height: 38px; max-width: 90px; }

  .navbar-collapse {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 63px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-hover);
    padding: 8px 16px 14px;
  }

  .navbar-collapse.show {
    display: block;
  }

  .navbar-nav {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-link {
    width: 100%;
    justify-content: space-between;
    padding: 10px 12px !important;
  }

  .nav-register-item { margin-left: 0; margin-top: 6px; }

  .dropdown-menu-custom {
    position: static;
    display: none;
    min-width: 0;
    margin: 4px 0 0 12px;
    padding: 4px;
    border-radius: var(--radius-sm);
    box-shadow: none;
  }

  .nav-item.dropdown.open .dropdown-menu-custom {
    display: block;
  }

  .nav-item.dropdown:hover .dropdown-menu-custom {
    display: none;
  }

  .nav-item.dropdown.open:hover .dropdown-menu-custom {
    display: block;
  }

  .top-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 63px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-hover);
    padding: 8px 16px 14px;
  }

  .top-nav.show {
    display: flex;
    flex-direction: column;
    align-items: stretch;
  }

  .top-nav a { padding: 10px 12px; }
  .nav-group { display: grid; }
  .nav-dropdown {
    position: static;
    display: grid;
    min-width: 0;
    margin: 4px 0 0 12px;
    padding: 4px;
    border-radius: var(--radius-sm);
    box-shadow: none;
  }

  nav { padding: 0; display: none; }
  nav.show { display: block; }

  .nav-inner {
    flex-direction: column;
    gap: 0;
    padding: 0;
  }

  .subnav-label { padding: 12px 20px; border-bottom: 1px solid var(--border); }

  nav a {
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
    border-left: 4px solid transparent;
  }

  nav a.active { border-left-color: var(--accent); border-bottom-color: var(--border); }

  .hamburger { display: flex; }

  .hero { padding: 60px 20px 50px; }
  .hero-content h2 { font-size: 2.2em; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-cta { flex-direction: column; align-items: center; }

  .section { padding: 40px 20px; }
  .section-title { font-size: 1.4em; }

  .person-card { width: 100%; max-width: 280px; }

  .contact-grid { flex-direction: column; align-items: center; }
  .contact-card { width: 100%; max-width: 300px; }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .brand-text { display: none; }
  .nav-logo,
  .header-logo { height: 30px; }
  .hero-content h2 { font-size: 1.8em; }
  .stat-number { font-size: 1.5em; }
  .footer-inner { grid-template-columns: 1fr; }
}