:root{
  --bg-primary:#0a0a0a;
  --bg-header:#111111;
  --bg-card:#161616;
  --bg-card-hover:#222222;
  --bg-thumb:#1a1a1a;
  --border-subtle:#2a2a2a;
  --border-thickness:3px;
  --divider-width:6px;
  --divider-color:#000000;
  --divider-thick:var(--divider-width) solid var(--divider-color);
  --text-primary:#ffffff;
  --text-secondary:#b0b0b0;
  --text-muted:#6a6a6a;
  --text-year:#aaaaaa;
  --white-faint-hover:rgba(255,255,255,0.08);
  --preview-bg:rgba(10,10,10,0.95);
  --preview-bg-hover:rgba(20,20,20,0.95);
  --shadow-card:0 12px 40px rgba(0,0,0,0.9);
  --shadow-card-hover:0 20px 60px rgba(0,0,0,0.8);
  --text-shadow-light:0 1px 4px rgba(0,0,0,0.6);
  --text-shadow-heavy:0 2px 8px rgba(0,0,0,0.8);
  --scrollbar-thumb:#444444;
  --scrollbar-thumb-hover:#777777;
  --radius-card:16px;
  --radius-sm:10px;
  --header-height:48px;
  --transition:0.35s cubic-bezier(0.22,1,0.36,1);
  --collapse-duration:0.5s;
  --collapse-ease:cubic-bezier(0.22,1,0.36,1);
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.container{max-width:1280px;margin:0 auto;padding:0 28px}

/* HEADER */
.site-header{height:var(--header-height);background:var(--bg-header);border-bottom:var(--border-thickness) solid var(--border-subtle);display:flex;align-items:center;justify-content:center;padding:0 28px;position:sticky;top:0;z-index:100}
.header-content{width:100%;max-width:1280px;display:flex;justify-content:center;align-items:center}
.brand-name{font-size:1.7rem;font-weight:700;letter-spacing:0.06em;color:var(--text-primary)}
.header-flag{position:absolute;right:28px;top:0;height:100%;display:flex;align-items:center;line-height:1}
.flag-tooltip{position:absolute;top:calc(100% + 10px);right:50%;transform:translateX(50%) translateY(-4px);background:var(--bg-card,#1a1a1a);color:var(--text-primary,#fff);border:var(--border-thickness) solid var(--border-subtle);padding:6px 10px;border-radius:var(--radius-sm,6px);font-size:0.78rem;font-weight:500;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity var(--transition),transform var(--transition);z-index:200}
.header-flag:hover .flag-tooltip{opacity:1;transform:translateX(50%) translateY(0)}
.header-flag img{display:block;height:100%;width:auto}

/* MAIN LAYOUT */
.columns-section{height:calc(100vh - var(--header-height));display:flex;align-items:stretch;background:var(--bg-primary)}
.columns-grid{display:flex;flex-wrap:nowrap;width:100%;height:100%;position:relative;overflow:hidden;background:var(--bg-primary)}
.column-card{overflow:hidden;background:var(--bg-card);border-right:var(--divider-thick);padding:10px 10px 10px;display:flex;flex-direction:column;transition:opacity var(--collapse-duration) var(--collapse-ease),border-color var(--collapse-duration) var(--collapse-ease),background var(--transition);will-change:opacity;position:relative;flex:0 0 33.333%}
.column-card:hover{background:var(--bg-card-hover)}
.column-card:last-child{border-right:none}

/* VIDEO COLUMN */
.video-column{flex:0 0 33.333%;padding:0;background:transparent}
.video-column:hover{background:transparent}
.video-column .content-overlay{padding:10px 10px 10px;flex:1;display:flex;flex-direction:column;position:relative;z-index:1;background:transparent;height:100%;width:100%;overflow-y:auto;overflow-x:hidden}
.bg-collage-shared{position:absolute;top:0;left:0;height:100%;width:33.333%;z-index:0;overflow:hidden;pointer-events:none}
.is-collapsed .bg-collage-shared{width:100%}
.bg-collage-img{width:100%;height:100%;object-fit:cover;object-position:top left;display:block;filter:brightness(0.35) saturate(0.8)}

/* DOCS COLUMN */
.docs-column{background:transparent !important}
.docs-column:hover{background:transparent !important}
.bg-excels-shared{position:absolute;top:0;left:33.333%;height:100%;width:33.333%;z-index:0;overflow:hidden;pointer-events:none;transition:opacity var(--collapse-duration) var(--collapse-ease)}
.is-collapsed .bg-excels-shared{opacity:0;pointer-events:none}
.bg-excels-img{width:100%;height:100%;object-fit:cover;display:block;filter:brightness(0.35) saturate(0.8)}

/* EXTRA COLUMN */
.extra-column{background:transparent !important;border-radius:0 0 var(--radius-card) var(--radius-card);overflow:hidden;position:relative;z-index:1}
.extra-column:hover{background:transparent !important}
.extra-flavor-text{position:absolute;top:0;left:0;z-index:0;max-width:62%;font-size:1.7rem;font-weight:800;line-height:1.15;color:var(--text-muted);text-shadow:var(--text-shadow-heavy);text-align:left;pointer-events:none;user-select:none}
.bg-extra-shared{position:absolute;top:0;left:66.666%;height:100%;width:33.333%;z-index:0;overflow:hidden;pointer-events:none;transition:opacity var(--collapse-duration) var(--collapse-ease)}
.is-collapsed .bg-extra-shared{opacity:0;pointer-events:none}
.bg-extra-img{position:absolute;bottom:0;left:0;width:100%;height:auto;max-height:100%;object-fit:cover;object-position:bottom;display:block;filter:brightness(0.35) saturate(0.8)}

/* EXPANDED PANEL */
#expandedVideoPanel{flex:0 0 0;opacity:0;overflow:hidden;padding:0;background:transparent;border-left:none;display:flex;flex-direction:column;position:relative;transition:opacity var(--collapse-duration) var(--collapse-ease);will-change:opacity;pointer-events:none}
#expandedVideoPanel .expanded-inner{padding:28px 24px 24px;overflow-y:auto;flex:1;opacity:1;background:transparent;position:relative;z-index:1}
.is-collapsed .column-card:not(.video-column){flex:0 0 0 !important;padding:0 !important;opacity:0 !important;border-right:0 solid #000000 !important;pointer-events:none;transition:none !important}
.is-collapsed .video-column{flex:0 0 33.333% !important;border-right:var(--divider-width) solid transparent !important;pointer-events:auto !important;opacity:1 !important}
.is-collapsed #expandedVideoPanel{flex:1 1 0 !important;opacity:1 !important;padding:0 !important;border-left:var(--divider-width) solid transparent !important;pointer-events:auto}
.expanded-video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:20px}
.expanded-video-item{display:flex;flex-direction:column;text-decoration:none;color:inherit;cursor:pointer;background:var(--preview-bg);border:var(--border-thickness) solid var(--border-subtle);border-radius:var(--radius-sm);padding:10px 12px;transition:background var(--transition),border-color var(--transition),transform var(--transition);box-shadow:none}
.expanded-video-item:hover{background:var(--preview-bg-hover);border-color:var(--white-faint-hover);transform:scale(1.04)}
.video-thumb-wrapper{width:100%;aspect-ratio:16 / 9;background:var(--bg-thumb);border-radius:var(--radius-sm);overflow:hidden;border:none}
.video-thumb-wrapper img{width:100%;height:100%;object-fit:cover;display:block}
.video-info{padding:8px 4px 0;text-align:left;width:100%}
.video-info .video-title{font-weight:500;font-size:0.9rem;color:var(--text-primary);line-height:1.4;word-break:break-word;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;text-overflow:ellipsis;white-space:normal;text-shadow:none}
.video-info .video-date{font-size:0.75rem;color:var(--text-secondary);margin-top:2px}

/* PREVIEW ITEMS */
.column-header{display:flex;justify-content:center;align-items:center;margin-bottom:10px;padding-bottom:10px;flex-shrink:0;position:relative;z-index:1}
.title-wrapper{text-align:center;width:100%}
.title-link{display:block;font-size:3rem;font-weight:700;color:var(--text-primary);cursor:default;letter-spacing:0.02em;text-shadow:var(--text-shadow-heavy)}
.section-label{display:block;font-size:1.2rem;color:var(--text-secondary);margin-top:2px;letter-spacing:0.3px;text-shadow:var(--text-shadow-light)}
.column-items{display:flex;flex-direction:column;gap:12px;flex:1;justify-content:flex-start;position:relative;z-index:1}
.video-column .column-items .item-link:last-child{margin-top:auto}
#shortFormTrigger .info{flex:1;justify-content:center}
.preview-item{display:flex;align-items:center;justify-content:center;gap:12px;padding:10px 12px;border-radius:var(--radius-sm);background:var(--preview-bg);border:var(--border-thickness) solid var(--border-subtle);transition:background var(--transition),border-color var(--transition),transform var(--transition);cursor:pointer;flex:0 1 auto;min-width:0}
.preview-item:hover{background:var(--preview-bg-hover);border-color:var(--white-faint-hover);transform:scale(1.03)}
.preview-item .thumb{flex-shrink:0;width:40px;height:40px;border-radius:var(--radius-sm);object-fit:cover;background:var(--bg-thumb);border:var(--border-thickness) solid var(--border-subtle)}
.preview-item .info{display:flex;flex-direction:column;align-items:center;gap:2px;flex:0 1 auto;text-align:center;min-width:0}
.preview-item .info .info-row{display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:center}
.preview-item .info .name{font-weight:500;font-size:0.9rem;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:0 1 auto;text-shadow:var(--text-shadow-light)}
.preview-item .info .amount{font-weight:500;font-size:0.9rem;color:var(--text-primary);white-space:nowrap;flex-shrink:0;text-shadow:var(--text-shadow-light)}
.preview-item .info .date{font-size:0.8rem;color:var(--text-secondary);white-space:nowrap;flex-shrink:0;text-shadow:var(--text-shadow-light)}
.preview-item .info .separator{color:var(--text-primary);flex-shrink:0;font-size:0.9rem;user-select:none}
.item-link{display:block;text-decoration:none;color:inherit}

/* ACHIEVEMENTS */
.achievements-section{padding:20px 0 50px;background:var(--bg-primary);position:relative;overflow:hidden;border-top:var(--divider-thick) solid var(--border-subtle)}
.achievements-section .container{position:relative;z-index:1;max-width:none;padding:0 40px}
.achievements-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.achievements-bg-layer{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity 0.6s ease}
.achievements-bg-layer.is-active{opacity:1}
.achievements-bg-layer.no-transition{transition:none}
.achievements-bg::after{content:"";position:absolute;inset:0;background:var(--bg-primary);opacity:0.72}
.section-heading{text-align:center;margin-bottom:44px}
.section-heading h2{font-size:3rem;font-weight:700;letter-spacing:0.02em;color:var(--text-primary);text-shadow:var(--text-shadow-heavy)}
.section-heading p{font-size:1.2rem;color:var(--text-secondary);margin-top:2px;letter-spacing:0.3px;text-shadow:var(--text-shadow-light)}
.achievements-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));justify-content:center;gap:22px}
.achievement-card{background:var(--preview-bg);border:var(--border-thickness) solid var(--border-subtle);border-radius:var(--radius-card);padding:24px 22px 26px;transition:transform var(--transition),box-shadow var(--transition),background var(--transition);box-shadow:var(--shadow-card);display:flex;flex-direction:column;position:relative;overflow:hidden}
.achievement-card:hover{transform:scale(1.04);background:var(--preview-bg-hover);box-shadow:var(--shadow-card-hover)}
.achievement-card .ach-year{font-size:0.7rem;font-weight:600;text-transform:uppercase;letter-spacing:0.8px;color:var(--text-year);margin-bottom:6px}
.achievement-card .ach-title{font-weight:700;font-size:1.05rem;color:var(--text-primary);margin-bottom:4px;line-height:1.3}
.achievement-card .ach-desc{font-size:0.88rem;color:var(--text-secondary);line-height:1.5;flex:1}

/* FOOTER */
.footer{text-align:center;padding:28px 0 32px;border-top:var(--border-thickness) solid var(--border-subtle);color:var(--text-muted);font-size:0.85rem}
.footer .socials{display:flex;justify-content:center;gap:18px;margin-bottom:12px}
.footer .socials a{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:var(--bg-card);border:var(--border-thickness) solid var(--border-subtle);color:var(--text-secondary);transition:color var(--transition),background var(--transition),transform var(--transition);font-size:1.1rem}
.footer .socials a:hover{color:var(--text-primary);background:var(--bg-card-hover);transform:translateY(-3px)}
.footer .copy{letter-spacing:0.3px}

/* SCROLLBARS */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:var(--bg-primary)}
::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:10px}
::-webkit-scrollbar-thumb:hover{background:var(--scrollbar-thumb-hover)}

/* RESPONSIVE */
@media (max-width: 820px) {
    :root {
        --header-height: 44px;
    }
    .site-header {
        padding: 0 18px;
    }
    .brand-name {
        font-size: 1rem;
    }
    .header-flag {
        right: 18px;
    }
    .columns-section {
        height: auto;
        min-height: calc(100vh - var(--header-height));
    }
    .columns-grid {
        flex-wrap: wrap;
        overflow-y: auto;
    }
    .video-column, #expandedVideoPanel, .column-card {
        flex: 1 1 100% !important;
        min-width: 100% !important;
        order: unset !important;
    }
    .video-column {
        border-right: none !important;
        border-bottom: var(--border-thickness) solid var(--border-subtle);
    }
    .column-card {
        border-right: none !important;
        border-bottom: var(--border-thickness) solid var(--border-subtle);
    }
    .column-card:last-child {
        border-bottom: none;
    }
    #expandedVideoPanel {
        max-height: 0 !important;
        opacity: 0 !important;
        padding: 0 !important;
        border-left: none !important;
        border-top: none !important;
        transition: max-height var(--collapse-duration) var(--collapse-ease),
                    opacity var(--collapse-duration) var(--collapse-ease),
                    padding var(--collapse-duration) var(--collapse-ease) !important;
    }
    #expandedVideoPanel .expanded-inner {
        padding: 10px 10px 10px;
        opacity: 1;
    }
    .video-column .content-overlay {
        padding: 20px 16px 24px;
    }
    .is-collapsed .column-card:not(.video-column) {
        flex: 0 0 0 !important;
        min-width: 0 !important;
        padding: 0 !important;
        opacity: 0 !important;
        border-bottom: none !important;
        pointer-events: none;
        transition: none !important;
    }
    .is-collapsed .video-column {
        flex: 1 1 100% !important;
        min-width: 100% !important;
        border-bottom: none !important;
        border-right: none !important;
        pointer-events: auto !important;
        opacity: 1 !important;
    }
    .is-collapsed #expandedVideoPanel {
        max-height: 600px !important;
        opacity: 1 !important;
        padding: 0 !important;
        border-top: var(--border-thickness) solid var(--border-subtle);
        border-left: none !important;
        pointer-events: auto;
        transition-delay: 0s !important;
        flex: 1 1 100% !important;
        min-width: 100% !important;
    }
    .bg-excels-shared, .bg-extra-shared {
        display: none;
    }
    .docs-column, .extra-column {
        background: var(--bg-card) !important;
    }
    .title-link {
        font-size: 1.3rem;
    }
    .expanded-video-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 16px;
    }
}

@media (max-width: 560px) {
    :root {
        --header-height: 40px;
    }
    .site-header {
        padding: 0 14px;
    }
    .brand-name {
        font-size: 0.9rem;
    }
    .header-flag {
        right: 14px;
    }
    .container {
        padding: 0 16px;
    }
    .column-card {
        padding: 16px 12px 16px !important;
    }
    .video-column .content-overlay {
        padding: 16px 12px 16px;
    }
    .title-link {
        font-size: 1.2rem;
    }
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    .preview-item .info .name {
        white-space: normal;
        overflow: visible;
        text-overflow: unset;
    }
    .is-collapsed #expandedVideoPanel {
        max-height: 450px !important;
    }
    #expandedVideoPanel .expanded-inner {
        padding: 16px 12px 20px;
    }
    .expanded-video-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 12px;
    }
}