:root{
  --ink:#15241b; --paper:#f6f4ee; --green:#1a6b33; --gold:#d7a93a; --dim:#78897b;
  --grad-gold:linear-gradient(135deg,#efcc6b,#c8922b);
  --grad-green:linear-gradient(135deg,#228a43,#0c3a1e);
  --sh:0 18px 46px rgba(10,38,20,.16); --sh-sm:0 8px 22px rgba(10,38,20,.10);
}
*{box-sizing:border-box;border:0;border-radius:0;margin:0;padding:0}
body{background:var(--paper);color:var(--ink);font-family:'Be Vietnam Pro',system-ui,-apple-system,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
h1,h2,h3{font-family:'Archivo',system-ui,sans-serif;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
svg{display:block}
.muted{color:rgba(255,255,255,.72)}
.accent-line{height:4px;width:64px;margin-top:10px;background:linear-gradient(90deg,var(--gold),rgba(215,169,58,0) 70%)}

/* HEADER overlay */
.site-header{position:absolute;top:0;left:0;right:0;z-index:30;display:flex;align-items:center;justify-content:space-between;padding:22px 30px;color:#fff}
.site-header .brand{display:flex;align-items:center;gap:12px;font:800 20px 'Archivo';color:#fff;letter-spacing:.01em}
.site-header .brand .seal{width:36px;height:36px;background:var(--grad-gold);color:var(--ink);display:grid;place-items:center;box-shadow:0 6px 16px rgba(215,169,58,.4)}
.site-header nav a{color:#fff;font:700 12px 'Be Vietnam Pro';letter-spacing:.14em;text-transform:uppercase;opacity:.92}
.site-footer{padding:26px 30px;text-align:center;color:var(--dim);font-size:12.5px;background:var(--paper);letter-spacing:.04em}

/* BANNER */
.banner{position:relative;height:66vh;min-height:470px;width:100%;overflow:hidden;color:#fff;
  background:linear-gradient(135deg,#1a6b33,#09271a)}
.banner.sub-hero{height:42vh;min-height:300px}
.banner.empty{height:52vh;min-height:360px}
.banner-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:saturate(1.06) contrast(1.02)}
.banner .scrim{position:absolute;inset:0;
  background:radial-gradient(80% 60% at 80% 8%,rgba(215,169,58,.16),transparent 60%),
    linear-gradient(180deg,rgba(6,24,13,.34) 0,rgba(6,24,13,0) 30%,rgba(6,24,13,.15) 55%,rgba(6,24,13,.9) 100%)}
.tag360{position:absolute;right:30px;top:80px;z-index:3;display:inline-flex;gap:8px;align-items:center;background:rgba(0,0,0,.3);padding:8px 14px;font:700 12px 'Be Vietnam Pro';letter-spacing:.08em;color:#fff;backdrop-filter:blur(4px)}
.banner-cap{position:absolute;left:0;bottom:0;z-index:3;padding:0 30px 36px;max-width:960px}
.banner .eyebrow{display:block;color:rgba(255,255,255,.88);font:700 12px 'Be Vietnam Pro';letter-spacing:.2em;text-transform:uppercase;margin-bottom:13px}
.banner h1{font-size:clamp(32px,5.2vw,62px);font-weight:900;line-height:.94;text-transform:uppercase;text-shadow:0 4px 40px rgba(0,0,0,.35)}
.banner-sub{margin-top:13px;font-size:16px;color:rgba(255,255,255,.92);font-weight:500;display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.banner-sub .d{width:4px;height:4px;background:var(--gold);display:inline-block}

/* STATS */
.stats{position:relative;z-index:10;background:radial-gradient(70% 160% at 100% 0,rgba(26,107,51,.07),transparent 60%),#fff;
  box-shadow:var(--sh-sm);display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));padding:28px 30px}
.stat{padding:4px 22px;position:relative}
.stat+.stat::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:linear-gradient(180deg,transparent,rgba(21,36,27,.12),transparent)}
.stat-n{font:800 34px 'Archivo';line-height:1;background:var(--grad-green);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-n s{font-size:14px;text-decoration:none;-webkit-text-fill-color:var(--dim);color:var(--dim)}
.stat.flag .stat-n{font-size:24px}
.stat-k{font:600 11.5px 'Be Vietnam Pro';letter-spacing:.07em;text-transform:uppercase;color:var(--dim);margin-top:9px}
.stat-bar{width:26px;height:4px;background:var(--grad-gold);margin-top:11px}

/* TIMELINE */
.timeline-sec{position:relative;color:#fff;padding:36px 30px 42px;overflow:hidden;
  background:radial-gradient(45% 55% at 88% 6%,rgba(215,169,58,.22),transparent 62%),
    radial-gradient(55% 70% at 6% 104%,rgba(34,138,67,.34),transparent 60%),
    linear-gradient(180deg,#0d3519,#07200f)}
.tl-head{position:relative;display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:22px;flex-wrap:wrap}
.tl-label{font:700 11px 'Be Vietnam Pro';letter-spacing:.22em;text-transform:uppercase;background:var(--grad-gold);-webkit-background-clip:text;background-clip:text;color:transparent}
.tl-prog{font:700 12px 'Be Vietnam Pro';letter-spacing:.1em;color:rgba(255,255,255,.6)}
.strip{position:relative;display:flex;gap:16px;align-items:stretch}

.stage-mini{flex:0 0 152px;position:relative;overflow:hidden;cursor:pointer;min-height:200px;box-shadow:var(--sh-sm);transition:transform .18s;background:linear-gradient(160deg,#1f5e33,#0b2c18)}
.stage-mini:hover{transform:translateY(-5px)}
.stage-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.stage-ov{position:absolute;inset:0;background:linear-gradient(180deg,rgba(9,39,20,.05),rgba(7,28,15,.42) 45%,rgba(7,28,15,.9))}
.stage-mini.wait .stage-ov{background:linear-gradient(180deg,rgba(7,28,15,.5),rgba(7,28,15,.9))}
.stage-num{position:absolute;top:0;left:0;z-index:2;width:30px;height:30px;display:grid;place-items:center;font:800 13px 'Archivo';color:#fff;background:linear-gradient(135deg,rgba(215,169,58,.95),rgba(200,146,43,.75))}
.stage-mini.wait .stage-num{background:rgba(255,255,255,.14)}
.stage-cap{position:absolute;left:0;bottom:0;z-index:2;padding:13px}
.stage-s{font:700 10px 'Be Vietnam Pro';letter-spacing:.09em;text-transform:uppercase;color:var(--gold)}
.stage-mini.wait .stage-s{color:rgba(255,255,255,.55)}
.stage-cap b{font:700 14px 'Be Vietnam Pro';display:block;margin-top:3px;color:#fff}

.stage-big{flex:1 1 auto;position:relative;overflow:hidden;min-width:0;min-height:372px;box-shadow:var(--sh);background:linear-gradient(135deg,#1f6b38,#09271a)}
.stage-big .stage-ov{background:radial-gradient(60% 90% at 100% 100%,rgba(215,169,58,.14),transparent 55%),
  linear-gradient(105deg,rgba(7,28,15,.93) 34%,rgba(7,28,15,.45) 66%,rgba(7,28,15,.12))}
.stage-inner{position:relative;z-index:2;padding:28px 30px;max-width:620px;height:100%;display:flex;flex-direction:column;justify-content:flex-end}
.stage-badge{display:inline-flex;gap:9px;align-items:center;font:700 11px 'Be Vietnam Pro';letter-spacing:.14em;text-transform:uppercase;color:var(--gold);margin-bottom:12px}
.stage-badge i{width:9px;height:9px;background:var(--gold);display:block;animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(215,169,58,.5)}100%{box-shadow:0 0 0 12px rgba(215,169,58,0)}}
.stage-big h2{font:900 clamp(30px,4.6vw,50px) 'Archivo';text-transform:uppercase;line-height:.96}
.stage-fields{list-style:none;display:flex;flex-wrap:wrap;gap:8px 22px;margin:16px 0 0;font-size:13px;color:rgba(255,255,255,.7)}
.stage-fields b{color:#fff;font-weight:700}
.stage-media{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}
.stage-media a{background:rgba(255,255,255,.1);backdrop-filter:blur(8px);color:#fff;padding:11px 17px;font:700 12.5px 'Be Vietnam Pro';display:inline-flex;gap:9px;align-items:center}
.stage-media a svg{width:16px;height:16px}
.stage-media a.solid{background:var(--grad-gold);color:var(--ink)}

/* SECTION heads (light sections) */
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.sec-head h2{font:800 23px 'Archivo';text-transform:uppercase}
.sec-note{font:600 13px 'Be Vietnam Pro';color:var(--dim)}

/* TOÀN CẢNH */
.toancanh-sec{padding:40px 30px;background:var(--paper)}
.tour-frame{width:100%;aspect-ratio:16/9;border:0;background:#000;box-shadow:var(--sh)}
.video-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-top:16px}
.vung-video{width:100%;box-shadow:var(--sh-sm)}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--grad-green);color:#fff;padding:12px 18px;font:700 13px 'Be Vietnam Pro'}

/* ALBUM */
.album-sec{padding:40px 30px;background:#fff}
.album-group{margin-top:22px}
.album-group:first-of-type{margin-top:0}
.album-group h3{font:700 15px 'Be Vietnam Pro';color:var(--green);text-transform:uppercase;letter-spacing:.06em;margin-bottom:12px}
.album-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px}
.album-ph{position:relative;box-shadow:var(--sh-sm);overflow:hidden}
.album-ph img{width:100%;height:150px;object-fit:cover}
.album-ph.pano img{height:120px}
.album-ph.pano{outline:3px solid var(--gold);outline-offset:-3px}
.album-ph figcaption{padding:8px 10px;font-size:12px;color:var(--dim);background:#fff}

/* MAP */
.map-sec{background:var(--paper)}
.map-sec .sec-head{padding:26px 30px 16px;margin-bottom:0}
.map-wrap{position:relative;height:78vh;min-height:520px;width:100%}
#map{height:100%;width:100%;background:#e8ecef}
.map-panel{position:absolute;z-index:500;left:24px;bottom:24px;background:#fff;box-shadow:var(--sh);width:272px;overflow:hidden}
.mp-ttl{padding:14px 18px;font:800 13px 'Archivo';text-transform:uppercase;color:#fff;letter-spacing:.06em;background:var(--grad-green)}
.map-panel a{display:flex;align-items:center;gap:13px;padding:14px 18px;color:var(--ink);font:600 14px 'Be Vietnam Pro';transition:background .15s}
.map-panel a:hover{background:#f3f0e8}
.map-panel a .ic{width:36px;height:36px;display:grid;place-items:center;color:#fff;flex:0 0 36px}
.map-panel a .ic svg{width:19px;height:19px}
.map-panel a .ic.t{background:linear-gradient(135deg,#3b6fe0,#163a9e)}
.map-panel a .ic.v{background:linear-gradient(135deg,#d2622c,#9a3610)}
.map-panel a .ic.p{background:var(--grad-gold);color:var(--ink)}
.map-panel a .mp-cta{margin-left:auto;color:var(--dim)}

/* CTA + QR */
.cta-sec{position:relative;overflow:hidden;color:#fff;padding:40px 30px;text-align:center;
  background:radial-gradient(60% 120% at 50% 0,rgba(215,169,58,.14),transparent 60%),linear-gradient(180deg,#0d3519,#07200f)}
.cta-sec .cta{display:inline-flex;gap:9px;align-items:center;background:var(--grad-gold);color:var(--ink);padding:13px 22px;font:700 13px 'Be Vietnam Pro';letter-spacing:.06em;text-transform:uppercase;box-shadow:0 10px 26px rgba(215,169,58,.3)}
.cta-sec .qr-print{display:block;margin-top:18px;color:rgba(255,255,255,.72);font-size:13px;text-decoration:underline;text-underline-offset:3px}

/* HISTORY */
.history-sec{padding:40px 30px;background:var(--paper)}
.vu-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}
.vu-card{position:relative;display:flex;flex-direction:column;padding:22px 20px;color:#fff;min-height:170px;
  background:var(--grad-green);box-shadow:var(--sh-sm);transition:transform .18s}
.vu-card:hover{transform:translateY(-4px)}
.vu-kind{font:700 12px 'Be Vietnam Pro';letter-spacing:.12em;text-transform:uppercase;color:var(--gold)}
.vu-year{font:900 40px 'Archivo';line-height:1;margin-top:4px}
.vu-date{font-size:13px;color:rgba(255,255,255,.75);margin-top:6px}
.vu-go{display:inline-flex;align-items:center;gap:7px;margin-top:auto;padding-top:14px;font:700 12.5px 'Be Vietnam Pro';letter-spacing:.04em;color:#fff}
.history-sec .muted{color:var(--dim)}

@media(max-width:860px){
  .site-header{padding:16px 18px}
  .banner-cap,.site-footer,.toancanh-sec,.album-sec,.history-sec,.cta-sec,.timeline-sec{padding-left:18px;padding-right:18px}
  .map-sec .sec-head{padding-left:18px;padding-right:18px}
  .stats{grid-template-columns:repeat(2,1fr);gap:20px 0;padding:22px 18px}
  .stat{padding:0 14px}.stat+.stat::before{display:none}
  .strip{flex-direction:column}
  .stage-mini{flex:0 0 auto;min-height:150px}
  .stage-big{min-height:320px}
  .stage-big .stage-ov{background:linear-gradient(180deg,rgba(7,28,15,.25),rgba(7,28,15,.92))}
  .banner{height:62vh}
  .map-wrap{height:70vh}
}