:root {
    --bg: #f5f6fa;
    --bg-alt: #eef0f8;
    --surface: #ffffff;
    --dark: #1a2040;
    --dark-surface: #222848;
    --text: #1a1e35;
    --text-2: #4a5070;
    --text-3: #8a8faa;
    --border: rgba(0, 0, 0, 0.09);
    --primary: #5969e0;
    --primary-light: #7b88e8;
    --primary-soft: rgba(89, 105, 224, 0.15);
    --accent: #06d6a0;
    --accent-soft: rgba(6, 214, 160, 0.12);
    --gradient-hero: linear-gradient(135deg, #0a0e1a 0%, #1e1b4b 40%, #312e81 70%, #1e1b4b 100%);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-pill: 100px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 24px rgba(0,0,0,0.10);
    --shadow-lg: 0 12px 48px rgba(0,0,0,0.14);
    --font-body: 'Plus Jakarta Sans', -apple-system, sans-serif;
    --font-display: 'Sora', 'Plus Jakarta Sans', sans-serif;
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
    font-family: var(--font-body);
    color: var(--text);
    background: var(--bg);
    line-height: 1.65;
    overflow-x: hidden;
}

.container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
}

h1, h2, h3, h4 {
    font-family: var(--font-display);
    line-height: 1.15;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--text);
    margin-bottom: 1.5rem;
}

.section-dark h2 { color: #fff; }

.section-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--primary);
    background: var(--primary-soft);
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    margin-bottom: 1.25rem;
}

.section-label.light {
    color: var(--accent);
    background: rgba(6, 214, 160, 0.12);
}

.section-header-center {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section {
    padding: 120px 0;
}

.section-alt {
    background: var(--bg-alt);
}

.section-dark {
    background: var(--dark);
    color: rgba(255,255,255,0.6);
}

#exhibition {
    background: var(--bg-alt);
    color: var(--text-2);
}

#exhibition h2 {
    color: var(--text);
}

#exhibition .section-label.light {
    color: var(--primary);
    background: var(--primary-soft);
}

#exhibition .expo-text {
    color: var(--text-2);
}

#exhibition .sponsor-logo {
    background: rgba(255, 255, 255, 0.7);
    border-color: rgba(0, 0, 0, 0.07);
}

#exhibition .sponsor-logo:hover {
    background: #fff;
    border-color: rgba(89, 105, 224, 0.2);
}

/* ========== NAVBAR ========== */
.navbar {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 48px);
    max-width: 1100px;
    z-index: 1000;
    background: linear-gradient(135deg, rgba(19, 15, 42, 0.95) 0%, rgba(30, 18, 66, 0.95) 40%, rgba(40, 15, 82, 0.95) 70%, rgba(26, 14, 56, 0.95) 100%);
    backdrop-filter: blur(28px) saturate(1.4);
    -webkit-backdrop-filter: blur(28px) saturate(1.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.nav-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 28px;
    height: 76px;
}

.nav-links {
    display: flex;
    gap: 4px;
}

.nav-link {
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.95);
    padding: 7px 16px;
    border-radius: var(--radius-pill);
    transition: all 0.25s var(--ease);
    letter-spacing: 0.01em;
}

.nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.nav-logo-img {
    height: 72px;
    width: auto;
    object-fit: contain;
    transition: all 0.25s ease;
    filter: brightness(1.3) contrast(1.1) drop-shadow(0 0 8px rgba(255,255,255,0.15));
}

.nav-logo:hover .nav-logo-img {
    opacity: 1;
}

/* ===== HAMBURGER ===== */
.nav-toggle-input {
    display: none;
}

.nav-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 998;
    cursor: default;
}

.navbar:has(#nav-toggle:checked) ~ .nav-backdrop,
.navbar:has(#nav-toggle:checked) .nav-backdrop {
    display: block;
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    cursor: pointer;
    z-index: 10;
    flex-shrink: 0;
}

.hamburger span {
    display: block;
    height: 2px;
    width: 24px;
    background: rgba(255,255,255,0.9);
    border-radius: 2px;
    transition: all 0.3s ease;
    transform-origin: center;
}

/* X animáció megnyitáskor */
.navbar:has(#nav-toggle:checked) .hamburger span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.navbar:has(#nav-toggle:checked) .hamburger span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.navbar:has(#nav-toggle:checked) .hamburger span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ========== HERO ========== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    text-align: left;
    overflow: hidden;
    background-image: url('hero-bg.png');
    background-size: cover;
    background-position: center;
}

.hero::before {
    display: none;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 2;
}

.mesh-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
}

.blob-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #6366f1 0%, transparent 70%);
    top: -15%;
    right: -10%;
    animation: drift 12s ease-in-out infinite alternate;
}

.blob-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #06d6a0 0%, transparent 70%);
    bottom: -20%;
    left: -10%;
    animation: drift 15s ease-in-out infinite alternate-reverse;
}

.blob-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, #818cf8 0%, transparent 70%);
    top: 40%;
    left: 50%;
    animation: drift 10s ease-in-out infinite alternate;
}

.blob-4 {
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, #d946a8 0%, #f0abcf 30%, transparent 70%);
    top: 10%;
    left: 25%;
    animation: drift 14s ease-in-out infinite alternate-reverse;
    opacity: 0.35;
}

.blob-5 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, #e879a8 0%, transparent 70%);
    bottom: 10%;
    right: 20%;
    animation: drift 11s ease-in-out infinite alternate;
    opacity: 0.3;
}

@keyframes drift {
    from { transform: translate(0, 0) scale(1); }
    to { transform: translate(40px, -30px) scale(1.15); }
}

.hero-particles {
    position: absolute;
    inset: 0;
}

.particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    animation: particleFloat linear infinite;
}

.p1 { width: 4px; height: 4px; top: 15%; left: 10%; animation-duration: 18s; animation-delay: 0s; }
.p2 { width: 6px; height: 6px; top: 25%; left: 80%; animation-duration: 22s; animation-delay: -3s; background: rgba(89, 105, 224, 0.3); }
.p3 { width: 3px; height: 3px; top: 60%; left: 20%; animation-duration: 16s; animation-delay: -6s; background: rgba(232, 121, 168, 0.2); }
.p4 { width: 5px; height: 5px; top: 70%; left: 75%; animation-duration: 20s; animation-delay: -2s; background: rgba(6, 214, 160, 0.25); }
.p5 { width: 4px; height: 4px; top: 40%; left: 45%; animation-duration: 24s; animation-delay: -8s; background: rgba(240, 171, 207, 0.25); }
.p6 { width: 3px; height: 3px; top: 85%; left: 55%; animation-duration: 19s; animation-delay: -4s; }
.p7 { width: 5px; height: 5px; top: 10%; left: 60%; animation-duration: 21s; animation-delay: -10s; background: rgba(6, 214, 160, 0.2); }
.p8 { width: 4px; height: 4px; top: 50%; left: 90%; animation-duration: 17s; animation-delay: -7s; }

@keyframes particleFloat {
    0% { transform: translateY(0) translateX(0) scale(1); opacity: 0; }
    10% { opacity: 1; }
    50% { transform: translateY(-120px) translateX(30px) scale(1.5); opacity: 0.6; }
    90% { opacity: 0; }
    100% { transform: translateY(-240px) translateX(-20px) scale(0.8); opacity: 0; }
}

.hero-rings {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ring {
    position: absolute;
    border-radius: 50%;
    border: 1.5px solid rgba(255, 255, 255, 0.08);
    animation: ringPulse ease-in-out infinite;
}

.r1 {
    width: 300px;
    height: 300px;
    animation-duration: 6s;
    border-color: rgba(129, 140, 248, 0.15);
}

.r2 {
    width: 500px;
    height: 500px;
    animation-duration: 8s;
    animation-delay: -2s;
    border-color: rgba(6, 214, 160, 0.12);
}

.r3 {
    width: 700px;
    height: 700px;
    animation-duration: 10s;
    animation-delay: -4s;
    border-color: rgba(89, 105, 224, 0.1);
}

@keyframes ringPulse {
    0%, 100% { transform: scale(0.9); opacity: 0.4; }
    50% { transform: scale(1.1); opacity: 1; }
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
    padding: 0 24px;
    margin-left: clamp(32px, 8vw, 120px);
    animation: heroIn 1s var(--ease) both;
}

.hero-scroll-hint {
    z-index: 10;
}

@keyframes heroIn {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-meta {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 16px;
    font-size: 1.1rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 0.03em;
    margin-bottom: 2.5rem;
}

.meta-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
    box-shadow: 0 0 8px var(--accent);
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 6vw, 5rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.hero-accent-line {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    font-weight: 800;
    background: linear-gradient(90deg, #f472b6, #d946a8, #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: -0.3em;
    margin-bottom: 2.5rem;
}


.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s var(--ease);
    box-shadow: 0 0 0 0 rgba(89, 105, 224, 0.4);
}

.hero-cta:hover {
    background: var(--primary-light);
    box-shadow: 0 0 40px 8px rgba(89, 105, 224, 0.3);
    transform: translateY(-2px);
}

.hero-scroll-hint {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.scroll-line {
    width: 2px;
    height: 48px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
    border-radius: 2px;
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ========== WELCOME ========== */
.welcome-unified {
    display: flex;
    align-items: center;
    gap: 80px;
}

.welcome-content {
    flex: 1;
}

.welcome-content h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    margin-bottom: 1.5rem;
}

.welcome-content p {
    color: var(--text-2);
    font-size: 1.05rem;
    margin-bottom: 1rem;
    line-height: 1.7;
}

.welcome-stats {
    display: flex;
    gap: 40px;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.welcome-stat {
    display: flex;
    flex-direction: column;
}

.stat-num {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-light);
    letter-spacing: -0.03em;
    line-height: 1;
}

.stat-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-3);
    margin-top: 6px;
}

.welcome-signatories {
    display: flex;
    gap: 32px;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

.signatory {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.signatory-name {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
}

.signatory-title {
    font-size: 0.82rem;
    color: var(--text-3);
    font-style: italic;
}

.welcome-visual {
    flex-shrink: 0;
    width: 280px;
    height: 240px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.embryo-container {
    position: relative;
    width: 200px;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.embryo-glow {
    position: absolute;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(200, 80, 160, 0.1) 0%, rgba(89, 105, 224, 0.1) 50%, transparent 70%);
    animation: embryoGlow 4s ease-in-out infinite;
}

.embryo-layer {
    position: absolute;
    border-radius: 50%;
    border: 1.5px solid transparent;
}

.layer-outer {
    width: 170px;
    height: 170px;
    border-color: rgba(200, 80, 160, 0.18);
    animation: layerPulse 5s ease-in-out infinite;
}

.layer-mid {
    width: 140px;
    height: 140px;
    border-color: rgba(89, 105, 224, 0.25);
    animation: layerPulse 5s ease-in-out infinite 0.4s;
}

.layer-inner {
    width: 110px;
    height: 110px;
    border-color: rgba(89, 105, 224, 0.18);
    box-shadow: inset 0 0 30px rgba(200, 80, 160, 0.06);
    animation: layerPulse 5s ease-in-out infinite 0.8s;
}

.embryo-cells {
    position: relative;
    width: 90px;
    height: 90px;
}

.embryo-cell {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 35%, rgba(89, 105, 224, 0.6), rgba(89, 105, 224, 0.25));
    box-shadow: inset 0 0 6px rgba(255, 255, 255, 0.1), 0 0 10px rgba(89, 105, 224, 0.15);
}

.ec1 { width: 38px; height: 38px; top: 2px;  left: 8px;  animation: cellBreathe 3.5s ease-in-out infinite 0s; background: radial-gradient(circle at 35% 35%, rgba(200, 100, 180, 0.5), rgba(160, 70, 140, 0.2)); }
.ec2 { width: 34px; height: 34px; top: 0;    right: 6px; animation: cellBreathe 3.5s ease-in-out infinite 0.5s; }
.ec3 { width: 36px; height: 36px; bottom: 4px; left: 4px; animation: cellBreathe 3.5s ease-in-out infinite 1s; background: radial-gradient(circle at 35% 35%, rgba(180, 90, 160, 0.45), rgba(140, 60, 130, 0.18)); }
.ec4 { width: 32px; height: 32px; bottom: 2px; right: 8px; animation: cellBreathe 3.5s ease-in-out infinite 1.5s; }
.ec5 { width: 26px; height: 26px; top: 18px; left: 30px; animation: cellBreathe 3.5s ease-in-out infinite 0.3s; background: radial-gradient(circle at 35% 35%, rgba(6, 214, 160, 0.5), rgba(6, 214, 160, 0.15)); }
.ec6 { width: 22px; height: 22px; top: 34px; right: 16px; animation: cellBreathe 3.5s ease-in-out infinite 0.8s; background: radial-gradient(circle at 35% 35%, rgba(6, 214, 160, 0.4), rgba(6, 214, 160, 0.1)); }
.ec7 { width: 20px; height: 20px; bottom: 18px; left: 28px; animation: cellBreathe 3.5s ease-in-out infinite 1.2s; background: radial-gradient(circle at 35% 35%, rgba(89, 105, 224, 0.4), rgba(180, 60, 140, 0.15)); }
.ec8 { width: 24px; height: 24px; top: 8px; left: 42px; animation: cellBreathe 3.5s ease-in-out infinite 0.7s; background: radial-gradient(circle at 35% 35%, rgba(89, 105, 224, 0.5), rgba(89, 105, 224, 0.2)); }

@keyframes embryoGlow {
    0%, 100% { opacity: 0.5; transform: scale(0.95); }
    50% { opacity: 1; transform: scale(1.08); }
}

@keyframes layerPulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.06); opacity: 1; }
}

@keyframes cellBreathe {
    0%, 100% { transform: scale(1); opacity: 0.7; }
    50% { transform: scale(1.12); opacity: 1; }
}

/* ========== ABSTRACT ========== */
.abstract-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.abstract-info h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
}

.abstract-info p {
    color: var(--text-2);
    font-size: 1.05rem;
    margin-bottom: 2rem;
    max-width: 440px;
}

.btn-modern {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 30px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.3s var(--ease);
    border: none;
    cursor: pointer;
}

.btn-modern:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(89, 105, 224, 0.25);
}

.btn-modern.btn-sm {
    padding: 12px 24px;
    font-size: 0.875rem;
}

.btn-outline-modern {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 30px;
    background: transparent;
    color: var(--text);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.3s var(--ease);
    cursor: pointer;
}

.btn-outline-modern:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-soft);
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
    padding-left: 28px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: var(--border);
    border-radius: 2px;
}

.timeline-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    position: relative;
    padding-bottom: 32px;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--surface);
    border: 2px solid var(--text-3);
    flex-shrink: 0;
    margin-left: -28px;
    margin-top: 4px;
    position: relative;
    z-index: 1;
}

.timeline-dot.active {
    border-color: var(--primary);
    background: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-soft);
}

.timeline-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 18px 22px;
    flex: 1;
}

.timeline-date {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 4px;
}

.timeline-title {
    font-weight: 600;
    color: var(--text);
    font-size: 1rem;
}

/* ========== PROGRAM TABS ========== */
.tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.tabs input[type="radio"] { display: none; }

.tab-pill {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 28px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1.5px solid var(--border);
    cursor: pointer;
    transition: all 0.3s var(--ease);
    margin-bottom: 32px;
}

.tab-pill:hover {
    border-color: var(--primary-light);
}

.tabs input[type="radio"]:checked + .tab-pill {
    background: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 8px 30px rgba(89, 105, 224, 0.2);
}

.tab-day {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-3);
    letter-spacing: -0.03em;
    line-height: 1;
}

.tabs input[type="radio"]:checked + .tab-pill .tab-day { color: rgba(255,255,255,0.5); }

.tab-info { display: flex; flex-direction: column; }

.tab-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text);
}

.tabs input[type="radio"]:checked + .tab-pill .tab-name { color: #fff; }

.tab-date {
    font-size: 0.8rem;
    color: var(--text-3);
}

.tabs input[type="radio"]:checked + .tab-pill .tab-date { color: rgba(255,255,255,0.6); }

.tab-panel {
    width: 100%;
    display: none;
    animation: panelIn 0.4s var(--ease);
}

@keyframes panelIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

#day1:checked ~ #content1,
#day2:checked ~ #content2 {
    display: block;
}

.prog-row {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 20px 28px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    transition: all 0.25s var(--ease);
}

.prog-row:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow);
}

.prog-time {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--primary);
    min-width: 120px;
    white-space: nowrap;
}

.prog-body { flex: 1; }

.prog-body h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0;
}

.prog-body p {
    color: var(--text-2);
    font-size: 0.9rem;
}

.prog-tag {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 5px 14px;
    border-radius: var(--radius-pill);
    background: var(--bg-alt);
    color: var(--text-3);
    white-space: nowrap;
}

.prog-tag.highlight {
    background: var(--primary-soft);
    color: var(--primary);
}

.prog-tag.social {
    background: var(--accent-soft);
    color: #059669;
}

/* ========== PRICING ========== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    align-items: start;
    max-width: 760px;
    margin: 0 auto;
}

.price-card {
    background: var(--surface);
    border: 1px solid var(--primary);
    border-radius: var(--radius);
    padding: 40px 32px;
    text-align: center;
    position: relative;
    transition: all 0.3s var(--ease);
    box-shadow: 0 0 0 1px var(--primary), var(--shadow-lg);
}

.price-card:hover {
    border-color: var(--primary);
    box-shadow: 0 0 0 1px var(--primary), var(--shadow-lg);
    transform: translateY(-4px);
}

.featured-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: #fff;
    padding: 6px 20px;
    border-radius: var(--radius-pill);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.price-tier {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-2);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.met-highlight {
    color: #d946a8;
    font-weight: 800;
}

.price-amount {
    font-family: var(--font-display);
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--text);
    margin: 12px 0 8px;
    letter-spacing: -0.03em;
}

.price-amount span {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--text-3);
}

.price-note {
    font-size: 0.85rem;
    color: var(--text-3);
    margin-bottom: 28px;
}

.price-features {
    list-style: none;
    text-align: left;
    margin-bottom: 32px;
}

.price-features li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.925rem;
    color: var(--text-2);
    padding-left: 24px;
    position: relative;
}

.price-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

.price-features li:last-child { border-bottom: none; }

.pricing-footnote {
    text-align: center;
    margin: 16px auto 0;
    font-size: 0.85rem;
    color: var(--text-muted);
    max-width: 780px;
}

/* ========== REGISTRATION INFO ========== */
.reg-info-block {
    max-width: 780px;
    margin: 48px auto 0;
    padding: 36px 40px;
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-2);
    font-size: 0.95rem;
    line-height: 1.7;
}

.reg-info-block h3 {
    color: var(--primary-light);
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    margin: 28px 0 12px;
}

.reg-info-block p {
    margin-bottom: 12px;
    text-align: justify;
}

.reg-conditions {
    list-style: none;
    padding: 0;
    margin: 0 0 16px;
}

.reg-conditions li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
}

.reg-conditions li::before {
    content: '¤';
    position: absolute;
    left: 0;
    color: var(--primary-light);
    font-weight: 700;
}

.inline-link {
    color: #d946a8;
    text-decoration: none;
    border-bottom: 1px solid rgba(217, 70, 168, 0.3);
    transition: border-color 0.3s ease;
}

.inline-link:hover {
    border-color: #d946a8;
}

.phone-link {
    color: var(--text);
    text-decoration: none;
}

.contact-card .phone-link {
    color: #fff;
}

.phone-reveal-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.phone-toggle {
    display: none;
}

.phone-masked {
    color: rgba(255,255,255,0.9);
    font-size: 0.95rem;
    letter-spacing: 0.03em;
}

.phone-full {
    display: none;
    color: #fff;
    text-decoration: none;
    font-size: 0.95rem;
}

.phone-full:hover {
    color: #a5b4fc;
}

.phone-show-btn {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: 20px;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.85);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    user-select: none;
}

.phone-show-btn:hover {
    background: rgba(255,255,255,0.2);
    color: #fff;
}

.phone-toggle:checked ~ .phone-masked {
    display: none;
}

.phone-toggle:checked ~ .phone-full {
    display: inline;
}

.phone-toggle:checked ~ .phone-show-btn {
    display: none;
}

.payment-details {
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px 24px;
}

.payment-details p {
    margin-bottom: 6px;
}

.payment-details p:last-child {
    margin-bottom: 0;
}

.payment-label {
    color: var(--text-1);
    font-weight: 600;
}

/* ========== ACCOMMODATION ========== */
.accom-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.accom-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 28px;
    text-align: center;
    transition: all 0.3s var(--ease);
}

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

.accom-img {
    width: 100%;
    height: 140px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 8px;
}

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

.accom-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-sm);
    background: var(--primary-soft);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.accom-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.accom-price {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.accom-price span {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--text-3);
}

.check-list {
    list-style: none;
    text-align: left;
    margin-bottom: 28px;
}

.check-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 0.925rem;
    color: var(--text-2);
}

.check-list li svg {
    color: var(--accent);
    flex-shrink: 0;
}

/* ========== EXHIBITION ========== */
.expo-text {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 48px;
    color: rgba(255,255,255,0.5);
    font-size: 1.05rem;
}

.marquee-track {
    width: 100%;
    overflow: hidden;
    position: relative;
    padding: 36px 0;
    mask-image: linear-gradient(90deg, transparent 0%, black 10%, black 90%, transparent 100%);
    -webkit-mask-image: linear-gradient(90deg, transparent 0%, black 10%, black 90%, transparent 100%);
}

.marquee-inner {
    display: flex;
    width: max-content;
    animation: slide 25s linear infinite;
}

@keyframes slide {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

.sponsor-logo {
    height: 200px;
    width: auto;
    max-width: 280px;
    object-fit: contain;
    padding: 16px 32px;
    margin: 0 24px;
    opacity: 0.85;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.sponsor-logo:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(129, 140, 248, 0.3);
    transform: scale(1.05);
}

/* ========== EXPO CTA + MODAL ========== */
.expo-cta-wrap {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

.expo-modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 3000;
}

.expo-modal:target {
    display: block;
}

.expo-modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(5, 5, 18, 0.75);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    cursor: pointer;
    display: block;
}

.expo-modal-box {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: calc(100% - 40px);
    max-width: 420px;
    z-index: 1;
}

.expo-modal-close {
    position: absolute;
    top: -14px;
    right: -14px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    z-index: 2;
    line-height: 1;
    transition: background 0.2s;
}

.expo-modal-close:hover {
    background: rgba(255,255,255,0.25);
}

/* ========== CONTACT ========== */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.contact-left h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
}

.contact-left p {
    color: var(--text-2);
    font-size: 1.05rem;
    max-width: 400px;
    line-height: 1.9;
}

.contact-card {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #130f2a 0%, #1e1242 40%, #280f52 70%, #1a0e38 100%);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 0;
    box-shadow: 0 24px 64px rgba(89, 60, 160, 0.35), 0 8px 24px rgba(0,0,0,0.2);
}

.card-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(48px);
    pointer-events: none;
}

.card-blob-1 {
    width: 220px;
    height: 220px;
    background: radial-gradient(circle, rgba(89, 105, 224, 0.35) 0%, transparent 70%);
    top: -60px;
    right: -40px;
}

.card-blob-2 {
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(89, 105, 224, 0.3) 0%, transparent 70%);
    bottom: -40px;
    left: -30px;
}

.contact-card-body {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 12px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.07);
    backdrop-filter: blur(8px);
    transition: background 0.25s ease, border-color 0.25s ease;
}

.contact-item:hover {
    background: rgba(255,255,255,0.09);
    border-color: rgba(255,255,255,0.14);
}

.contact-icon-wrap {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(89, 105, 224, 0.3), rgba(89, 105, 224, 0.15));
    border: 1px solid rgba(89, 105, 224, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: #a5b4fc;
}

.contact-icon-phone {
    background: linear-gradient(135deg, rgba(6, 214, 160, 0.25), rgba(6, 214, 160, 0.1));
    border-color: rgba(6, 214, 160, 0.25);
    color: #6ee7b7;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.contact-name {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: rgba(255,255,255,0.45);
    line-height: 1;
}

.contact-email {
    font-weight: 500;
    color: #fff;
    font-size: 0.975rem;
    text-decoration: none;
    transition: color 0.2s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.contact-email:hover {
    color: #a5b4fc;
}

.contact-card-sep {
    height: 1px;
    background: rgba(255,255,255,0.08);
    margin: 10px 0;
}

.contact-card-footer {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.contact-footer-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255,255,255,0.35);
}

.contact-rsvp-logo {
    display: block;
}

.contact-rsvp-logo img {
    height: 36px;
    width: auto;
    object-fit: contain;
    filter: brightness(1.4) contrast(1.05) drop-shadow(0 0 10px rgba(255,255,255,0.1));
    transition: all 0.3s ease;
    opacity: 0.9;
}

.contact-rsvp-logo:hover img {
    filter: brightness(1.6) contrast(1.1) drop-shadow(0 0 16px rgba(165, 180, 252, 0.4));
    opacity: 1;
    transform: scale(1.04);
}

/* ========== FOOTER ========== */
.footer {
    background: var(--dark);
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 32px 0;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-left {
    flex-shrink: 0;
}

.footer-logo-link {
    display: inline-block;
    transition: opacity 0.3s ease;
}

.footer-logo-link:hover {
    opacity: 0.8;
}

.footer-logo-img {
    height: 56px;
    width: auto;
    object-fit: contain;
    filter: brightness(1.3) contrast(1.1) drop-shadow(0 0 6px rgba(255,255,255,0.1));
}

.footer-right {
    text-align: right;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.footer-logo-text {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1rem;
    color: #fff;
}

.footer-divider {
    width: 1px;
    height: 20px;
    background: rgba(255,255,255,0.15);
}

.footer-tagline {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.4);
}

.footer-copy {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.3);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
    .welcome-unified { gap: 40px; }
    .pricing-grid { grid-template-columns: 1fr; max-width: 440px; margin: 0 auto; }

    .hamburger { display: flex; }

    .nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: calc(100% + 8px);
        left: 0;
        right: 0;
        background: linear-gradient(135deg, rgba(19,15,42,0.98) 0%, rgba(30,18,66,0.98) 50%, rgba(26,14,56,0.98) 100%);
        backdrop-filter: blur(28px);
        -webkit-backdrop-filter: blur(28px);
        border: 1px solid rgba(255,255,255,0.1);
        border-radius: var(--radius);
        padding: 8px;
        gap: 2px;
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        pointer-events: none;
        transition: max-height 0.35s ease, opacity 0.25s ease, padding 0.25s ease;
    }

    .navbar:has(#nav-toggle:checked) .nav-links {
        max-height: 500px;
        opacity: 1;
        pointer-events: auto;
        padding: 8px;
    }

    .nav-link {
        padding: 12px 20px;
        border-radius: var(--radius);
        font-size: 0.95rem;
    }

    .navbar {
        position: fixed;
    }
}

@media (max-width: 768px) and (orientation: portrait) {
    .hero {
        background-image: url('hero-bg-mobile.jpg');
        background-position: center bottom;
    }
    .hero-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
    .meta-dot { display: none; }
}

@media (max-height: 600px) and (orientation: landscape) {
    .navbar:has(#nav-toggle:checked) .nav-links {
        max-height: calc(100vh - 110px);
        overflow-y: auto;
    }

    .hero {
        padding-top: 76px;
        align-items: flex-start;
    }
    .hero-content {
        padding-top: 24px;
    }
    .hero h1 {
        font-size: 2rem;
        margin-bottom: 0.4rem;
    }
    .hero-accent-line {
        font-size: 1.3rem;
        margin-bottom: 0.8rem;
    }
    .hero-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
        margin-bottom: 0.8rem;
        font-size: 0.9rem;
    }
    .hero-cta {
        padding: 10px 28px;
        font-size: 0.9rem;
    }
    .meta-dot { display: none; }
}

@media (max-width: 768px) {
    .section { padding: 80px 0; }
    .abstract-layout { grid-template-columns: 1fr; gap: 48px; }
    .contact-layout { grid-template-columns: 1fr; gap: 40px; }
    .accom-grid { grid-template-columns: 1fr; }
    .welcome-unified { flex-direction: column; gap: 40px; }
    .welcome-visual { width: 200px; height: 180px; }
    .hero-chips { flex-direction: column; align-items: center; }
    .prog-row { flex-direction: column; gap: 8px; }
    .prog-time { min-width: auto; }
    .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
    .footer-brand { flex-direction: column; gap: 8px; }
    .footer-divider { width: 40px; height: 1px; }
    .tab-pill { padding: 12px 20px; }
}

/* ========== BACK TO TOP ========== */
@keyframes back-to-top-show {
    from { opacity: 0; transform: translateY(16px) scale(0.9); }
    to   { opacity: 1; transform: translateY(0)    scale(1);   }
}

.back-to-top {
    position: fixed;
    right: 2rem;
    bottom: 2.5rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(217, 70, 168, 0.35);
    color: #d946a8;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    z-index: 999;
    box-shadow: 0 4px 24px rgba(217, 70, 168, 0.18), 0 1px 4px rgba(0,0,0,0.08);
    opacity: 0;
    transform: translateY(16px) scale(0.9);
    animation: back-to-top-show linear both;
    animation-timeline: scroll(root);
    animation-range: 400px 600px;
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.back-to-top:hover {
    box-shadow: 0 8px 36px rgba(217, 70, 168, 0.38), 0 2px 8px rgba(0,0,0,0.1);
    border-color: rgba(217, 70, 168, 0.7);
}