/* Ván Đà Nẵng: native case media, screen tabs and a same-origin interactive demo. */
.vdn-principles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:28px}
.vdn-principles>div{padding:22px;border:1px solid var(--line);border-radius:16px;background:var(--soft)}
.vdn-principles>div>span{font-size:.6875rem;color:var(--muted);font-variant-numeric:tabular-nums}
.vdn-principles h3{font-size:1rem;line-height:1.45;letter-spacing:-.025em;margin:16px 0 10px;font-weight:600}
.vdn-principles p{font-size:.8125rem;color:var(--muted);line-height:1.75;margin:0}
.vdn-tabs{min-width:0}.vdn-tablist{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 20px}
.vdn-tablist[hidden],.vdn-tabpanel[hidden]{display:none}
.vdn-tablist button{appearance:none;font:inherit;font-size:.8125rem;font-weight:500;line-height:1.5;border:1px solid var(--line);border-radius:10px;padding:12px 16px;background:var(--soft);color:var(--muted);cursor:pointer;min-height:44px;transition:color .2s var(--motion-ease),background .2s var(--motion-ease)}
.vdn-tablist button[aria-selected=true]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.vdn-tabpanel>figure{margin:0}.vdn-tabpanel figcaption{font-size:.8125rem;line-height:1.7;color:var(--muted);margin-top:14px}
.vandanang .case-image{border:1px solid var(--line);border-radius:14px;background:#f3f5f0}
.vandanang .case-hero-screen .case-image{border:0;background:transparent;border-radius:0}
.vdn-demo{border:1px solid var(--line);border-radius:20px;overflow:hidden;background:var(--soft);margin-top:28px}
.vdn-demo-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:24px}
.vdn-demo-heading h3{font-size:1rem;font-weight:600;letter-spacing:-.02em;margin:0 0 8px}
.vdn-demo-heading p{font-size:.8125rem;line-height:1.65;color:var(--muted);margin:0}
.vdn-demo-heading a{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;font-size:.75rem;line-height:1.6;color:var(--ink);padding:11px 14px;border:1px solid var(--line);border-radius:10px;text-decoration:none}
.vdn-demo-heading a:hover{border-color:var(--muted)}
.vdn-demo-window{height:850px;border-top:1px solid var(--line);background:#f3f5f0}
.vdn-demo-window iframe{display:block;width:100%;height:100%;border:0;color-scheme:light}
.vdn-brand-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 20px;margin-top:24px}
.vdn-brand-grid figure{margin:0;min-width:0}.vdn-brand-grid figcaption{font-size:.8125rem;line-height:1.6;color:var(--muted);margin-top:12px}
.vdn-source-links{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:24px}.vdn-source-links a{font-size:.8125rem;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line);padding:4px 0}
.vdn-mobile{min-width:0;--phone-width:245px;--phone-gap:20px}
.vdn-mobile .case-carousel-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px;color:var(--muted);font-size:.8125rem}
.vdn-mobile .case-carousel-controls{display:flex;align-items:center;gap:8px}.vdn-mobile .case-carousel-controls[hidden]{display:none}
.vdn-mobile .case-carousel-controls button{width:44px;height:44px;min-height:44px;padding:0;cursor:pointer}
.vdn-mobile .case-carousel-controls button:disabled{opacity:.3;cursor:default;transform:none}.vdn-mobile .case-carousel-controls svg{width:20px;height:20px}.vdn-mobile .case-carousel-controls button:last-child svg{transform:rotate(180deg)}
.vdn-mobile [data-carousel-count]{min-width:54px;text-align:center;font-size:.75rem;font-variant-numeric:tabular-nums}
.vdn-mobile .case-carousel-rail{position:relative;display:flex;gap:var(--phone-gap);overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;overscroll-behavior-x:contain;touch-action:pan-x pan-y pinch-zoom;min-width:0;padding:4px 0 16px;scrollbar-width:thin}
.vdn-mobile[data-carousel-enhanced] .case-carousel-rail{scrollbar-width:none;cursor:grab}.vdn-mobile .case-carousel-rail::-webkit-scrollbar{display:none}
.vdn-mobile .case-carousel-rail:is([data-carousel-dragging],[data-carousel-moving]){scroll-snap-type:none}.vdn-mobile .case-carousel-rail[data-carousel-dragging]{cursor:grabbing;user-select:none}
.vdn-mobile .case-carousel-item{min-width:0;flex:0 0 var(--phone-width);scroll-snap-align:start;scroll-snap-stop:always}
.vdn-mobile figure{margin:0;min-width:0}.vdn-mobile .case-image{border-radius:18px}.vdn-mobile .case-image img{width:100%;height:auto;user-select:none;-webkit-user-drag:none;pointer-events:none}.vdn-mobile figcaption{font-size:.75rem;line-height:1.65;color:var(--muted);text-align:center;margin-top:12px}
.vandanang :focus-visible{outline:2px solid var(--accent);outline-offset:4px}
@media(max-width:820px){.vdn-principles{grid-template-columns:1fr;gap:12px}.vdn-principles>div{padding:20px}.vdn-principles h3{margin-top:12px}.vdn-demo-heading{flex-direction:column;align-items:flex-start;gap:16px}.vdn-mobile{--phone-width:min(76vw,290px)}}
@media(max-width:560px){.vdn-tablist{gap:8px}.vdn-tablist button{flex:1 1 auto;padding:11px 12px;font-size:.75rem}.vdn-demo{border-radius:16px}.vdn-demo-heading{padding:20px}.vdn-demo-window{height:720px}.vdn-brand-grid{grid-template-columns:1fr;gap:22px}.vdn-mobile .case-carousel-heading{flex-wrap:wrap}.vdn-mobile .case-carousel-controls{margin-left:auto}.vdn-tabpanel figcaption{font-size:.75rem}}

/* Audit evidence uses the shared viewer; mobile demo remains a simple link. */
.vdn-before-grid{display:grid;gap:28px;margin:28px 0 36px}.vdn-before-grid figure{margin:0;min-width:0}.vdn-before-grid figcaption{font-size:.8125rem;color:var(--muted);line-height:1.7;margin-top:12px}
.vdn-audit-findings{border-top:1px solid var(--line)}.vdn-audit-findings article{display:grid;grid-template-columns:32px minmax(150px,.7fr) minmax(0,1.3fr);gap:20px;padding:26px 0;border-bottom:1px solid var(--line)}
.vdn-audit-number{font-size:.75rem;color:var(--accent);padding-top:4px}.vdn-audit-findings h3{margin:0;font-size:1rem;line-height:1.5;letter-spacing:-.025em}.vdn-audit-findings p{margin:0 0 12px;font-size:.875rem;line-height:1.8;color:var(--muted)}.vdn-audit-findings p:last-child{margin-bottom:0}.vdn-audit-findings strong{color:var(--ink);font-weight:500}
.vdn-demo-window[hidden]{display:none}
@media(max-width:820px){.vdn-demo-window{display:none}.vdn-demo-heading a{background:var(--ink);color:var(--bg);border-color:var(--ink);min-height:44px;white-space:normal}.vdn-demo-heading{align-items:stretch}.vdn-demo-heading a{justify-content:center}.vdn-audit-findings article{grid-template-columns:28px minmax(0,1fr);gap:12px}.vdn-audit-findings article>div{grid-column:2}}