:root{--vas-red: #C41E3A;--vas-red-dark: #8B1425;--vas-red-light: #E8334D;--vas-gold: #D4A843;--vas-gold-light: #F0D080;--vas-navy: #2B1A1A;--vas-navy-light: #4A2030;--white: #FFFFFF;--gray-50: #F8F9FA;--gray-100: #F1F3F5;--gray-200: #E9ECEF;--gray-300: #DEE2E6;--gray-400: #ADB5BD;--gray-500: #6C757D;--gray-600: #495057;--gray-700: #343A40;--gray-800: #212529;--font-primary: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-display: "Playfair Display", Georgia, serif;--section-padding: 100px 0;--container-max: 1200px;--container-padding: 0 24px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);--shadow-md: 0 4px 20px rgba(0, 0, 0, .08);--shadow-lg: 0 10px 40px rgba(0, 0, 0, .12);--shadow-xl: 0 20px 60px rgba(0, 0, 0, .15);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 20px;--radius-xl: 32px;--ease-out: cubic-bezier(.22, 1, .36, 1);--transition-fast: .2s var(--ease-out);--transition-medium: .4s var(--ease-out);--transition-slow: .6s 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.pillar-icon{filter:brightness(10)}.pillar-title{font-family:var(--font-display);font-size:1.25rem;font-weight:600;color:var(--gray-800);margin-bottom:16px}.pillar-text{font-size:.92rem;color:var(--gray-500);line-height:1.7}.sponsors{padding:var(--section-padding);background:var(--gray-50)}.sponsors-header{text-align:center;margin-bottom:64px}.sponsor-tier{margin-bottom:48px}.sponsor-tier:last-child{margin-bottom:0}.sponsor-tier-label{display:flex;align-items:center;justify-content:center;gap:16px;margin-bottom:32px}.sponsor-tier-line{width:60px;height:1px}.tier-platinum .sponsor-tier-line{background:linear-gradient(90deg,transparent,#8C8C8C)}.tier-gold .sponsor-tier-line{background:linear-gradient(90deg,transparent,var(--vas-gold))}.tier-silver .sponsor-tier-line{background:linear-gradient(90deg,transparent,#A0A0A0)}.sponsor-tier-name{font-size:.85rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase}.tier-platinum .sponsor-tier-name{color:#6b6b6b}.tier-gold .sponsor-tier-name{color:var(--vas-gold)}.tier-silver .sponsor-tier-name{color:#8a8a8a}.sponsor-logos{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:32px}.sponsor-logo-card{display:flex;align-items:center;justify-content:center;padding:24px 40px;background:var(--white);border-radius:var(--radius-md);border:1px solid var(--gray-200);min-width:180px;min-height:100px;transition:all var(--transition-fast)}.sponsor-logo-card:hover{border-color:var(--vas-gold);box-shadow:var(--shadow-md);transform:translateY(-4px)}.sponsor-logo-card img{max-height:60px;max-width:160px;object-fit:contain}.sponsor-logo-text{font-size:1.2rem;font-weight:800;color:var(--gray-700);letter-spacing:.05em}.footer{background:var(--vas-navy);color:#ffffffb3;padding:64px 0 0}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.08)}.footer-brand{display:flex;flex-direction:column}.footer-logo{display:flex;align-items:center;gap:12px;margin-bottom:20px}.footer-logo-img{width:44px;height:44px;border-radius:50%;object-fit:cover;border:2px solid var(--vas-gold)}.footer-logo-text{font-weight:700;font-size:1rem;color:var(--white)}.footer-brand-desc{font-size:.88rem;line-height:1.8;color:#ffffff8c;margin-bottom:24px}.footer-socials{display:flex;gap:12px}.footer-social-link{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:#ffffff0f;border-radius:50%;color:#fff9;transition:all var(--transition-fast);font-size:.9rem}.footer-social-link:hover{background:var(--vas-red);color:var(--white);transform:translateY(-2px)}.footer-col-title{font-size:.8rem;font-weight:700;color:var(--white);letter-spacing:.1em;text-transform:uppercase;margin-bottom:24px}.footer-links{display:flex;flex-direction:column;gap:12px}.footer-link{font-size:.88rem;color:#ffffff8c;transition:all var(--transition-fast)}.footer-link:hover{color:var(--vas-gold-light);padding-left:4px}.footer-contact-item{display:flex;align-items:flex-start;gap:10px;margin-bottom:14px}.footer-contact-icon{flex-shrink:0;width:20px;text-align:center;color:var(--vas-gold);margin-top:2px}.footer-contact-text{font-size:.88rem;color:#ffffff8c}.footer-contact-text a{color:#ffffff8c;transition:color var(--transition-fast)}.footer-contact-text a:hover{color:var(--vas-gold-light)}.footer-bottom{padding:24px 0;text-align:center;font-size:.82rem;color:#ffffff59}@media(max-width:1024px){.about-grid{grid-template-columns:1fr;gap:48px}.pillars-grid{grid-template-columns:1fr 1fr}.mission-items-grid{grid-template-columns:1fr}.values-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:40px}.footer-brand{grid-column:1 / -1}}@media(max-width:768px){:root{--section-padding: 72px 0}.nav{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:#1a1d3efa;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);padding:20px;gap:4px}.nav.active{display:flex}.nav-link{padding:12px 20px;width:100%;text-align:left}.menu-toggle{display:flex}.hero-content{padding:100px 0 80px}.hero-title{font-size:2.2rem}.hero-actions{flex-direction:column}.btn{justify-content:center}.pillars-grid,.values-grid{grid-template-columns:1fr}.promise-banner-content{flex-direction:column;text-align:center;gap:32px}.promise-emblem{width:140px;height:140px}.mission-tabs{flex-wrap:wrap}.footer-grid{grid-template-columns:1fr;gap:32px}}@media(max-width:480px){.hero-title{font-size:1.8rem}.section-title{font-size:1.6rem}.sponsor-logo-card{min-width:140px;padding:18px 24px}.mission-tab{padding:10px 18px;font-size:.82rem}}.page-hero{position:relative;padding:160px 0 80px;background:linear-gradient(135deg,var(--vas-navy) 0%,var(--vas-red-dark) 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24px;background:var(--gray-50);border-radius:var(--radius-md);border:1px solid var(--gray-100);text-align:center;transition:all var(--transition-fast)}.leader-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:#c41e3a26}.leader-card-featured{background:linear-gradient(135deg,#c41e3a0d,#d4a8430d);border-color:var(--vas-red)}.leader-role{font-size:.75rem;font-weight:700;color:var(--vas-red);letter-spacing:.1em;text-transform:uppercase;margin-bottom:8px}.leader-name{font-family:var(--font-display);font-size:1.05rem;font-weight:600;color:var(--gray-800)}.services-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:8px}.service-card{padding:32px;background:var(--gray-50);border-radius:var(--radius-md);border:1px solid var(--gray-100);transition:all var(--transition-fast)}.service-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:#c41e3a26;background:var(--white)}.service-icon{width:56px;height:56px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#c41e3a14,#c41e3a26);border-radius:var(--radius-md);margin-bottom:20px;color:var(--vas-red)}.service-title{font-family:var(--font-display);font-size:1.1rem;font-weight:600;color:var(--gray-800);margin-bottom:10px}.service-text{font-size:.92rem;color:var(--gray-500);line-height:1.7}.benefits-grid{display:flex;flex-direction:column;gap:12px;margin-top:16px}.benefit-item{display:flex;align-items:center;gap:14px;padding:16px 20px;background:var(--gray-50);border-radius:var(--radius-sm);border-left:3px solid var(--vas-red);transition:all var(--transition-fast)}.benefit-item:hover{background:var(--gray-100);transform:translate(4px)}.benefit-icon{flex-shrink:0;width:28px;height:28px;display:flex;align-items:center;justify-content:center;color:var(--vas-red)}.benefit-text{font-size:.92rem;color:var(--gray-700);line-height:1.5}.contact-cta-card{padding:48px;background:linear-gradient(135deg,var(--vas-navy) 0%,var(--vas-red-dark) 100%);border-radius:var(--radius-lg);text-align:center}.contact-cta-title{font-family:var(--font-display);font-size:1.5rem;font-weight:700;color:var(--white);margin-bottom:12px}.contact-cta-text{font-size:1rem;color:#ffffffbf;line-height:1.7;margin-bottom:24px;max-width:500px;margin-left:auto;margin-right:auto}.contact-cta-info{display:flex;flex-direction:column;gap:12px;align-items:center}.contact-cta-info p{display:flex;align-items:center;gap:10px;color:#ffffffd9;font-size:.95rem}.contact-cta-info a{color:var(--vas-gold-light)}.contact-cta-info a:hover{color:var(--white)}.contact-info-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:32px}.contact-info-card{padding:32px;background:var(--gray-50);border-radius:var(--radius-md);border:1px solid var(--gray-100);text-align:center;transition:all var(--transition-fast)}.contact-info-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:#c41e3a26}.contact-info-icon{width:56px;height:56px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#c41e3a14,#c41e3a26);border-radius:50%;color:var(--vas-red)}.contact-info-title{font-size:.85rem;font-weight:700;color:var(--gray-800);margin-bottom:8px;text-transform:uppercase;letter-spacing:.05em}.contact-info-value{font-size:.92rem;color:var(--vas-red);font-weight:500;word-break:break-all}.contact-info-value:hover{color:var(--vas-red-dark)}.events-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:8px}.event-card{padding:32px;background:var(--gray-50);border-radius:var(--radius-md);border:1px solid var(--gray-100);transition:all var(--transition-fast)}.event-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:#c41e3a26;background:var(--white)}.event-icon{width:56px;height:56px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#c41e3a14,#c41e3a26);border-radius:var(--radius-md);margin-bottom:20px;color:var(--vas-red)}.event-title{font-family:var(--font-display);font-size:1.1rem;font-weight:600;color:var(--gray-800);margin-bottom:10px}.event-desc{font-size:.92rem;color:var(--gray-500);line-height:1.7}.nav-link.active{color:var(--vas-gold-light)}.nav-link.active:after{width:60%}@media(max-width:1024px){.services-grid{grid-template-columns:1fr}.leadership-grid,.leadership-grid-4{grid-template-columns:repeat(2,1fr)}.contact-info-cards,.events-grid{grid-template-columns:1fr}}@media(max-width:768px){.page-hero{padding:120px 0 50px}.leadership-grid,.leadership-grid-4{grid-template-columns:1fr}.contact-cta-card{padding:32px 24px}}@media(max-width:480px){.page-hero-title{font-size:1.8rem}}.lang-toggle{display:flex;gap:4px;margin-left:12px;background:#ffffff1a;border-radius:6px;padding:3px}.lang-btn{padding:5px 12px;font-size:.75rem;font-weight:700;font-family:var(--font-primary);letter-spacing:.04em;border:none;border-radius:4px;cursor:pointer;transition:all .2s ease;background:transparent;color:#fff9}.lang-btn:hover{color:#fff}.lang-btn-active{background:var(--vas-red);color:#fff;box-shadow:0 2px 8px #c41e3a4d}.vietcham-hero .page-hero-overlay{display:none}.gallery-section{padding-bottom:2rem;border-bottom:1px solid var(--gray-200)}.gallery-section:last-child{border-bottom:none}.gallery-carousel{position:relative;overflow:hidden;border-radius:var(--radius-md)}.gallery-track{display:flex}.gallery-slide{flex:0 0 25%;padding:0 4px;cursor:pointer;box-sizing:border-box}.gallery-slide img{width:100%;height:220px;object-fit:cover;border-radius:10px;transition:all .3s ease;display:block}.gallery-slide:hover img{transform:scale(1.03);box-shadow:0 6px 20px #00000026}.gallery-btn{position:absolute;top:50%;transform:translateY(-50%);width:40px;height:40px;border-radius:50%;background:#fffffff2;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--gray-700);box-shadow:0 2px 12px #00000026;z-index:5;transition:all .2s ease}.gallery-btn:hover{background:#fff;box-shadow:0 4px 20px #0003;transform:translateY(-50%) scale(1.05)}.gallery-btn-prev{left:10px}.gallery-btn-next{right:10px}.gallery-dots{display:flex;justify-content:center;gap:6px;margin-top:1rem}.gallery-dot{width:8px;height:8px;border-radius:50%;background:var(--gray-300);border:none;cursor:pointer;padding:0;transition:all .3s ease}.gallery-dot.active{background:var(--vas-red);width:24px;border-radius:4px}.gallery-lightbox{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9999;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .3s ease}.gallery-lightbox.active{opacity:1;visibility:visible}.lightbox-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#000000eb;cursor:pointer}.lightbox-content{position:relative;z-index:1;max-width:90vw;max-height:85vh}.lightbox-content img{max-width:90vw;max-height:85vh;object-fit:contain;border-radius:4px;box-shadow:0 10px 60px #00000080}.lightbox-close{position:absolute;top:20px;right:24px;z-index:2;background:none;border:none;color:#fff;font-size:2.5rem;cursor:pointer;width:48px;height:48px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all .2s}.lightbox-close:hover{background:#ffffff1a}.lightbox-prev,.lightbox-next{position:absolute;top:50%;transform:translateY(-50%);z-index:2;background:#ffffff1a;border:1px solid rgba(255,255,255,.2);color:#fff;width:48px;height:48px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}.lightbox-prev:hover,.lightbox-next:hover{background:#fff3}.lightbox-prev{left:20px}.lightbox-next{right:20px}.lightbox-counter{position:absolute;bottom:24px;left:50%;transform:translate(-50%);z-index:2;color:#ffffffb3;font-size:.85rem;font-weight:500;letter-spacing:.08em}@media(max-width:1024px){.gallery-slide{flex:0 0 33.333%}}@media(max-width:768px){.gallery-slide{flex:0 0 50%}.gallery-slide img{height:180px}.lightbox-prev,.lightbox-next{width:36px;height:36px}.lightbox-prev{left:8px}.lightbox-next{right:8px}}.vndx-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}.vndx-card{background:#fff;border-radius:16px;overflow:hidden;border:1px solid var(--gray-100);transition:all .35s ease;box-shadow:0 2px 8px #0000000a}.vndx-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px #0000001a;border-color:var(--gray-200)}.vndx-card-img{position:relative;height:180px;overflow:hidden}.vndx-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}.vndx-card:hover .vndx-card-img img{transform:scale(1.06)}.vndx-card-badge{position:absolute;bottom:-20px;right:20px;width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 4px 12px #0003;z-index:2}.vndx-card-badge svg{width:20px;height:20px}.vndx-card-body{padding:1.75rem 1.5rem 1.5rem}.vndx-card-title{font-family:var(--font-display);font-size:1.1rem;color:var(--gray-800);margin-bottom:.5rem}.vndx-card-text{font-size:.9rem;color:var(--gray-500);line-height:1.65}@media(max-width:1024px){.vndx-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.vndx-grid{grid-template-columns:1fr}.vndx-card-img{height:160px}}.membership-modal{position:fixed;top:0;right:0;bottom:0;left:0;z-index:10000;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .3s ease}.membership-modal.active{opacity:1;visibility:visible}.membership-modal-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.membership-modal-content{position:relative;background:#fff;border-radius:20px;padding:2.5rem;max-width:560px;width:90%;max-height:85vh;overflow-y:auto;box-shadow:0 20px 60px #0003;transform:translateY(20px) scale(.97);transition:transform .3s ease}.membership-modal.active .membership-modal-content{transform:translateY(0) scale(1)}.membership-modal-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;border:none;background:var(--gray-100);color:var(--gray-600);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s}.membership-modal-close:hover{background:var(--gray-200);color:var(--gray-800)}@media(max-width:768px){.membership-modal-content{padding:1.5rem;max-height:90vh}}