/* Blackstone V4 — true drone-cinematic direction */
.v4-drone-hero{min-height:100svh;position:relative;overflow:hidden;background:#030303}
.drone-stack,.drone-stack .drone-video{position:absolute;inset:0;width:100%;height:100%}
.drone-stack .drone-video{object-fit:cover;opacity:0;transform:scale(1.035);transition:opacity 2.2s ease,transform 9s ease;filter:saturate(.86) contrast(1.04) brightness(.72)}
.drone-stack .drone-video.is-active{opacity:1;transform:scale(1)}
.drone-vignette{position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.76) 0%,rgba(0,0,0,.34) 48%,rgba(0,0,0,.15) 72%,rgba(0,0,0,.45) 100%),linear-gradient(0deg,rgba(0,0,0,.58),transparent 45%,rgba(0,0,0,.28))}
.drone-goldwash{position:absolute;inset:0;background:radial-gradient(circle at 75% 35%,rgba(207,165,83,.18),transparent 32%),linear-gradient(125deg,transparent 54%,rgba(216,171,81,.08));mix-blend-mode:screen;pointer-events:none}
.drone-grain{position:absolute;inset:0;opacity:.12;pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.26'/%3E%3C/svg%3E")}
.v4-hero-copy{position:relative;z-index:4;padding-top:clamp(150px,19vh,230px);max-width:1040px}
.v4-hero-copy h1{max-width:980px;font-size:clamp(4rem,9vw,9.2rem);line-height:.82;letter-spacing:-.065em;text-shadow:0 8px 44px rgba(0,0,0,.44)}
.v4-hero-copy h1 span,.v4-hero-copy h1 em{display:block}
.v4-hero-copy h1 span{font-weight:300;color:#fff}
.v4-hero-copy h1 em{font-style:normal;color:#d4ad5e;font-weight:650}
.v4-hero-copy>p{max-width:760px;font-size:clamp(1.05rem,1.8vw,1.35rem);line-height:1.55;color:rgba(255,255,255,.9);text-shadow:0 3px 20px rgba(0,0,0,.7)}
.drone-badge{position:absolute;right:5vw;top:24vh;border:1px solid rgba(255,255,255,.28);background:rgba(4,4,4,.28);backdrop-filter:blur(18px);padding:22px 24px 20px;min-width:255px;box-shadow:0 22px 60px rgba(0,0,0,.3)}
.drone-badge i{display:block;width:38px;height:2px;background:#d4ad5e;margin-bottom:14px}.drone-badge span,.drone-badge small{display:block;letter-spacing:.16em}.drone-badge span{font-size:.78rem;color:#fff}.drone-badge small{margin-top:6px;color:#c9b27c;font-size:.58rem}
.v4-inner-video-hero{min-height:76svh;position:relative;display:flex;align-items:flex-end;overflow:hidden;background:#050505}
.v4-inner-video-hero>video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:saturate(.88) contrast(1.06) brightness(.72)}
.v4-inner-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.78) 0%,rgba(0,0,0,.38) 48%,rgba(0,0,0,.15) 100%),linear-gradient(0deg,rgba(0,0,0,.72),transparent 58%)}
.v4-inner-copy{position:relative;z-index:2;padding-top:170px;padding-bottom:clamp(70px,9vw,120px);margin:0 auto;width:min(1180px,92%)}
.v4-inner-copy h1{font-family:Georgia,serif;font-weight:400;font-size:clamp(3.6rem,7.7vw,7.8rem);line-height:.9;letter-spacing:-.055em;color:#fff;max-width:1000px;margin:.18em 0}.v4-inner-copy h1 em{font-style:italic;color:#d4ad5e}.v4-inner-copy p{font-size:clamp(1.05rem,1.6vw,1.3rem);max-width:700px;color:rgba(255,255,255,.86);line-height:1.6}
@media(max-width:900px){.drone-badge{display:none}.v4-hero-copy{padding-top:155px}.v4-hero-copy h1{font-size:clamp(3.4rem,16vw,6.8rem)}.v4-drone-hero{min-height:92svh}.v4-inner-video-hero{min-height:72svh}.v4-inner-copy{padding-top:140px}.drone-stack .drone-video{filter:saturate(.9) contrast(1.03) brightness(.64)}}
@media(prefers-reduced-motion:reduce){.drone-stack .drone-video{transition:none;transform:none!important}}
/* V5 refinement: cleaner cinematic image, richer depth, robust article pages */
.v4-drone-hero,.v4-inner-video-hero{background:#050505}
.drone-stack .drone-video,.v4-inner-video-hero>video{filter:saturate(.72) contrast(1.09) brightness(.58)}
.v4-drone-hero:after,.v4-inner-video-hero:after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(circle at 72% 35%,transparent 0 22%,rgba(0,0,0,.18) 58%,rgba(0,0,0,.55) 100%);z-index:1}
.v4-hero-copy,.v4-inner-copy{z-index:3}
.v4-hero-copy h1,.v4-inner-copy h1{text-shadow:0 18px 50px rgba(0,0,0,.5)}
.drone-badge{backdrop-filter:blur(12px);background:rgba(6,6,6,.44);border:1px solid rgba(213,177,98,.45);box-shadow:0 18px 50px rgba(0,0,0,.25)}
body{background:#0a0a0a}
/* article pages loaded from /articles get the same premium treatment */
.edu-detail-grid{gap:26px}
.edu-detail{background:linear-gradient(145deg,rgba(255,255,255,.96),rgba(245,241,232,.98));border:1px solid rgba(178,144,77,.25);box-shadow:0 24px 65px rgba(0,0,0,.12);border-radius:18px;padding:clamp(22px,3vw,38px)}
.edu-detail img{border-radius:14px;box-shadow:0 20px 50px rgba(0,0,0,.18)}
@media(max-width:900px){.drone-stack .drone-video,.v4-inner-video-hero>video{filter:saturate(.78) contrast(1.05) brightness(.53)}}