html{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
body{margin:0}
img{max-width:100%}

/* Hệ thiết kế: biên tập – tiết chế. Serif cho tiêu đề & số, sans cho giao diện. Một màu nhấn (cam), màu xanh chỉ dành cho địa lý. */
:root{
  --bg:#0A0E16; --surface:#111722; --surface2:#171F2D; --ink:#F2F4F8; --ink2:#9AA4B5; --line:#232C3B;
  --accent:#FF6B1F; --accent2:#FFAA6B; --accent-text:#FF9460; --accent-ink:#1A0A00; --teal:#4FD6C8;
  --land-in:#141C2A; --land-out:#0C111B; --grid:#182131; --river:#1B4466; --river-core:#3E86B8; --flow:#BFE6FF;
  --bnd:#4FD6C8; --pin:#F2F4F8; --pin-ink:#0A0E16; --dist:#8A97AD;
  --display:"Source Serif 4","Source Serif Pro",Georgia,"Times New Roman",serif;
  --body:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  color-scheme:dark;
}

*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.6;-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased;font-feature-settings:"tnum" 0,"cv11" 1}
.wrap{max-width:1240px;margin-left:auto;margin-right:auto;padding-left:20px;padding-right:20px}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ---------- Ảnh bìa ---------- */
.hero{position:relative;color:#fff;background:#1a2f5e;overflow:hidden}
.hero picture,.hero img{display:block;width:100%}
.hero img{height:auto}
.hero::before{content:"";position:absolute;top:0;left:0;right:0;height:64%;background:linear-gradient(to bottom,rgba(6,10,28,.66),rgba(6,10,28,.28) 55%,rgba(6,10,28,0));z-index:1;pointer-events:none}
.hero::after{content:"";position:absolute;bottom:0;left:0;right:0;height:26%;background:linear-gradient(to bottom,transparent,var(--bg));z-index:1;pointer-events:none}
.life{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0}
.hero-txt{position:absolute;z-index:2;top:0;left:0;right:0;padding:34px 20px 0}
.kicker{display:flex;align-items:center;gap:12px;font:600 .7rem/1 var(--body);letter-spacing:.24em;text-transform:uppercase;margin:0 0 18px;color:rgba(255,255,255,.88)}
.kicker::before{content:"";width:26px;height:2px;background:var(--accent2)}
h1{font-family:var(--display);font-weight:700;font-size:1.55rem;font-size:clamp(1.55rem,7.1vw,2.1rem);line-height:1.16;letter-spacing:-.012em;margin:0;text-wrap:balance;text-shadow:0 1px 22px rgba(4,8,24,.55);font-optical-sizing:auto}
h1 em{display:block;font-family:var(--body);font-style:normal;white-space:nowrap;color:#FFC79E;font-size:min(8.4vw,3.2rem);line-height:1.05;letter-spacing:-.01em;font-weight:800;text-transform:uppercase}
h1 em b{font-size:1.42em;font-weight:900;letter-spacing:-.04em;background:linear-gradient(180deg,#FFD7B2,#FF8A3D);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 4px 22px rgba(255,107,31,.35))}
h1 em span{margin-left:.22em}
h1 .sub{display:block;white-space:nowrap;margin-top:10px;font-family:var(--body);text-transform:uppercase;font-size:min(4.75vw,1.9rem);line-height:1.2;font-weight:800;letter-spacing:0;color:#fff}
.sapo-wrap{padding-top:34px;padding-bottom:46px}
.sapo{font-family:var(--display);font-size:1.14rem;font-weight:500;color:var(--ink);margin:0;max-width:38rem;line-height:1.62;text-wrap:pretty}
.sapo::before{content:"";display:block;width:44px;height:3px;background:var(--accent);margin-bottom:22px}

@media(min-width:900px){
  .hero{height:clamp(580px,54vw,800px)}
  .hero img{height:100%;object-fit:cover;object-position:70% 28%}
  .hero picture{height:100%}
  .hero::before{top:0;bottom:0;left:0;right:auto;height:auto;width:70%;background:linear-gradient(to right,rgba(6,10,28,.7),rgba(6,10,28,.32) 60%,rgba(6,10,28,0))}
  .hero-txt{top:0;bottom:0;left:0;right:0;display:flex;flex-direction:column;justify-content:flex-start;padding:clamp(48px,7vw,104px) max(40px,calc((100vw - 1240px)/2 + 20px)) 0;max-width:none}
  .hero-txt>*{max-width:44%}
  h1{font-size:2.1rem;font-size:clamp(2.1rem,3.1vw,2.9rem);line-height:1.12}
  .hero-txt>h1{max-width:none}
  h1 em{font-size:clamp(2.4rem,3.8vw,4.6rem)}
  h1 .sub{font-size:clamp(1.5rem,2.5vw,3.1rem);margin-top:14px}
  .sapo{font-size:1.3rem;line-height:1.6}
  .sapo-wrap{padding-top:52px;padding-bottom:72px}
}

/* ---------- Stage ---------- */
.stage{display:grid;grid-template-columns:minmax(0,1fr);align-items:start}
.stick{position:-webkit-sticky;position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--bg);padding-top:8px;padding-bottom:6px;min-width:0}
.mapbox{position:relative;height:320px;height:clamp(250px,40vh,400px);height:clamp(250px,40svh,400px);border-radius:10px;overflow:hidden;border:1px solid var(--line);background:var(--land-out);contain:layout paint}
#map{display:block;width:100%;height:100%}
.cap{position:absolute;top:8px;left:8px;right:8px;display:flex;align-items:center;gap:10px;background:var(--surface);background:color-mix(in srgb,var(--surface) 95%,transparent);border:1px solid var(--line);border-radius:8px;padding:6px 12px 6px 7px;font-size:.76rem;line-height:1.3;pointer-events:none;min-width:0}
.cap .b{flex:none;min-width:22px;height:22px;border-radius:11px;background:var(--accent);color:var(--accent-ink);font-weight:700;display:grid;place-items:center;font-size:.74rem;padding-left:5px;padding-right:5px}
.cap .t{flex:1;min-width:0;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;letter-spacing:-.005em}
.cap .v{flex:none;font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;color:var(--ink2);white-space:nowrap;font-weight:500}
.scale{position:absolute;left:12px;bottom:9px;font-size:.66rem;color:var(--ink2);font-weight:600;pointer-events:none;letter-spacing:.02em}
.scale i{display:block;height:5px;border:1.5px solid var(--ink2);border-top:0;margin-bottom:2px}
.chips{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;padding-top:8px;padding-bottom:0}
.chips::-webkit-scrollbar{display:none}
.chip{flex:1 0 auto;min-width:38px;height:36px;padding-left:12px;padding-right:12px;border-radius:18px;border:1px solid var(--line);background:transparent;font-weight:600;font-size:.82rem;letter-spacing:.01em;font-variant-numeric:tabular-nums;transition:background-color .25s,color .25s,border-color .25s}
.chip.on{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}

/* ---------- Lớp bản đồ ---------- */
.outside{fill:var(--land-out)}
.inside{fill:var(--land-in)}
.river-glow{fill:none;stroke:var(--river);stroke-width:13;stroke-linecap:round;stroke-linejoin:round;stroke-opacity:.5}
.river-core{fill:none;stroke:var(--river-core);stroke-width:5;stroke-linecap:round;stroke-linejoin:round}
.river-core.thin{stroke-width:2.8}
.river-glow.thin{stroke-width:7}
.flow{fill:none;stroke:var(--flow);stroke-width:1.2;stroke-linecap:round;stroke-dasharray:1.2 16;stroke-opacity:.75;animation:flow 3.2s linear infinite}
@keyframes flow{to{stroke-dashoffset:-17.2}}
.lake{fill:var(--river-core);fill-opacity:.65;stroke:var(--flow);stroke-opacity:.35;stroke-width:.6}
.bnd{fill:none;stroke:var(--bnd);stroke-width:1.5;stroke-dasharray:6 4;stroke-linejoin:round;vector-effect:non-scaling-stroke}
.dist{fill:none;stroke:var(--dist);stroke-opacity:.34;stroke-width:.8;stroke-linejoin:round;stroke-linecap:round;vector-effect:non-scaling-stroke}
.bnd-glow{fill:none;stroke:var(--bnd);stroke-opacity:.14;stroke-width:7;stroke-linejoin:round;vector-effect:non-scaling-stroke}
@keyframes march{to{stroke-dashoffset:-12}}
.foot{fill:var(--accent);fill-opacity:.2;stroke:var(--accent);stroke-opacity:.8;stroke-width:1;stroke-dasharray:4 3;vector-effect:non-scaling-stroke;transition:fill-opacity .35s}
.foot.on{fill-opacity:.42;stroke:var(--accent);stroke-opacity:1;stroke-dasharray:none;stroke-width:1.6}
.band{fill:none;stroke:var(--accent);stroke-opacity:.2;stroke-width:22;stroke-linecap:round;stroke-linejoin:round;transition:stroke-opacity .35s}
.band.on{stroke-opacity:.5}
.lm{font:600 10px var(--body);fill:var(--ink2);paint-order:stroke;stroke:var(--land-in);stroke-width:3px;stroke-linejoin:round;letter-spacing:.01em}
.lm.w{font-style:italic;font-family:var(--display);font-weight:500;fill:var(--river-core);stroke:none}
.lm.city{font:700 15px var(--display);letter-spacing:.34em;fill:var(--bnd);fill-opacity:.55;stroke:none;text-anchor:middle}
.lmdot{fill:var(--ink2)}
.pin{cursor:pointer;outline:none}
.pin .body{fill:var(--pin);stroke:var(--land-in);stroke-width:1.5;stroke-linejoin:round}
.pin .hole{fill:var(--pin-ink)}
.pin .plab{fill:var(--ink);font:600 11px var(--body);dominant-baseline:central;paint-order:stroke;stroke:var(--land-in);stroke-width:3.4px;stroke-linejoin:round;pointer-events:all;letter-spacing:-.005em}
.pin .pulse{fill:var(--accent);opacity:0;transform-box:fill-box;transform-origin:center}
.pin .hit{fill:transparent}
.pin.dim{opacity:.8}
.pin.on .body{fill:var(--accent);stroke:var(--land-in);stroke-width:1.8}
.pin.on .hole{fill:var(--accent-ink)}
.pin.on .plab{fill:var(--accent-text);font-size:12px;font-weight:700;stroke-width:4px}
.pin.on .pulse{animation:pulse 2.4s ease-out infinite}
.pin:focus-visible .body{stroke:var(--teal);stroke-width:2.6}
.cap .b svg{display:block;width:11px;height:14px;fill:currentColor}
@keyframes pulse{0%{opacity:.55;transform:scale(1)}100%{opacity:0;transform:scale(2.8)}}
/* Dừng các hiệu ứng nền khi đang cuộn / bay camera / bản đồ ngoài màn hình → bản đồ chỉ vẽ lại khi cần */
#map.busy .flow,#map.busy .pulse,#map.off .flow,#map.off .pulse{animation-play-state:paused}


/* ---------- Nội dung từng dự án (thẻ mở, không hộp) ---------- */
.steps{display:flex;flex-direction:column;gap:0;padding-top:4px;padding-bottom:40px;min-width:0}
.step{min-height:calc(100vh - var(--stick,480px) - 16px);min-height:calc(100svh - var(--stick,480px) - 16px);padding-top:0;padding-bottom:0;min-width:0;display:flex;flex-direction:column}
.card{flex:0 1 auto;display:flex;flex-direction:column;gap:20px;background:none;border:0;border-top:1px solid var(--line);border-radius:0;padding:30px 0 36px;min-width:0}
.step:first-child .card{border-top:0;padding-top:22px}
.eyebrow{display:flex;align-items:center;gap:12px;font:600 .7rem/1 var(--body);letter-spacing:.2em;text-transform:uppercase;color:var(--accent-text)}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent)}
.eyebrow .num{display:none}
.card h2{font-family:var(--display);font-weight:700;font-size:1.5rem;font-size:clamp(1.5rem,6.6vw,1.95rem);line-height:1.18;letter-spacing:-.014em;margin:0;text-wrap:balance}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:0;margin:0;border-top:2px solid var(--ink)}
.stat{background:none;border-radius:0;padding:14px 16px 4px 0;min-width:0}
.stat+.stat{border-left:1px solid var(--line);padding-left:18px}
.stat dt{font:600 .66rem/1.2 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--ink2)}
.stat dd{margin:8px 0 0;font-family:var(--display);font-weight:700;font-size:1.7rem;line-height:1.1;letter-spacing:-.015em;font-variant-numeric:tabular-nums lining-nums;overflow-wrap:anywhere}
.stat.pop{grid-column:1/-1;border-left:0;padding-left:0;margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.stat dd small.pre{margin:0 7px 0 0}
.stat dd small{font:500 .74rem var(--body);color:var(--ink2);margin-left:5px;letter-spacing:0;display:inline-block}
.bar{height:3px;border-radius:0;background:var(--line);overflow:hidden}
.bar i{display:block;height:100%;background:var(--accent);border-radius:0}
.facts{margin:0;display:grid;gap:22px}
.facts dt{font:600 .66rem/1.2 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--ink2);margin-bottom:6px}
.facts dd{margin:0;font-size:1rem;line-height:1.6;overflow-wrap:break-word}
.facts .owner{font-weight:600;font-size:1.06rem;letter-spacing:-.005em}
.credit{margin-top:56px;padding:28px 0 calc(40px + env(safe-area-inset-bottom,0px));border-top:2px solid var(--ink)}
.credit .wrap{display:grid;gap:10px}
.credit p{margin:0;display:flex;gap:14px;align-items:baseline}
.credit span{flex:none;min-width:64px;font:600 .66rem/1.2 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--ink2)}
.credit b{font:600 1.02rem var(--display);color:var(--ink)}
.facts .model{font-family:var(--display);font-size:1.06rem;line-height:1.6;padding:0;border:0;background:none;border-radius:0}
.model ul{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.model li{position:relative;padding-left:20px}
.model li::before{content:"";position:absolute;left:1px;top:.72em;width:7px;height:2px;background:var(--accent)}
.model .mi{margin:0 0 12px;color:var(--ink)}
.model .mi:last-child,.model ul:last-child{margin-bottom:0}
.model ul+.mi{margin-top:12px}
.model .mi+ul{margin-top:2px}
.nav{display:flex;gap:10px;padding-top:6px}
.nav button{flex:1;min-height:44px;border:1px solid var(--line);background:transparent;border-radius:22px;font-size:.82rem;font-weight:600;padding-left:14px;padding-right:14px;letter-spacing:.01em;transition:border-color .2s,background-color .2s}
.nav button:active{background:var(--surface2)}

.big{display:flex;flex-direction:column;gap:2px;margin:0}
.big b{font-family:var(--display);font-weight:700;font-size:2.7rem;font-size:clamp(2.7rem,13vw,3.7rem);line-height:1;letter-spacing:-.03em;font-variant-numeric:tabular-nums lining-nums;color:var(--accent-text)}
.big span{font-weight:500;color:var(--ink2);font-size:.9rem}
.rank{list-style:none;margin:0;padding:0;border-top:2px solid var(--ink)}
.rank li{border-bottom:1px solid var(--line)}
.rank button{width:100%;text-align:left;background:none;border:0;border-radius:0;padding:13px 0 12px;display:grid;gap:9px;transition:background-color .2s}
.rank button:active{background:var(--surface2)}
.rank .row{display:flex;gap:14px;align-items:flex-start;justify-content:space-between;font-size:.9rem;font-weight:500;line-height:1.38}
.rank .row span:first-child{min-width:0}
.rank .row em{font-style:normal;font-variant-numeric:tabular-nums lining-nums;color:var(--ink);white-space:nowrap;font-weight:600}
.hint{font-size:.8rem;color:var(--ink2);margin:0;line-height:1.55}

@media(min-width:900px){
  .wrap{padding-left:40px;padding-right:40px}
  .stage{grid-template-columns:minmax(0,1.4fr) minmax(0,.6fr);gap:72px}
  .stick{height:calc(100vh - 16px);height:calc(100svh - 16px);display:flex;flex-direction:column;padding-top:8px;padding-bottom:8px}
  .mapbox{height:auto;flex:1;min-height:0;border-radius:12px}
  .step{min-height:92vh;min-height:92svh;justify-content:center}
  .card{padding:40px 0 44px;gap:26px;max-width:30rem}
  .card h2{font-size:2.15rem}
  .stat dd{font-size:2rem}
}
@media(prefers-reduced-motion:reduce){.pin.on .pulse,.flow{animation:none}}
.rv{will-change:opacity,transform}

/* Bản dự phòng khi trình xem không chạy được JavaScript: vẫn có hiệu ứng nhờ CSS cuộn + SMIL */
.stage{position:relative}
.stage:not(.ready)>.stick,.stage:not(.ready)>.steps{position:absolute;left:0;right:0;top:0;visibility:hidden;pointer-events:none}
.fb{grid-column:1/-1;min-width:0;--stick:380px}
@supports (height:1svh){.fb{--stick:calc(clamp(250px,40svh,400px) + 60px)}}
html:has(.fb){scroll-behavior:smooth}
.fb .step{scroll-margin-top:calc(var(--stick) + 8px)}
.fb .ml{position:absolute;top:0;left:0;display:block;width:100%;height:100%}
.fb a.chip{display:grid;place-items:center;text-decoration:none;color:inherit}
.fb .rank div[data-go]{display:grid;gap:6px;padding:8px 6px}
.fb .rank .bar{display:block}
.life-svg{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;mix-blend-mode:screen}
@media(min-width:900px){.life-svg{display:none}}
.fb .chips{flex-wrap:nowrap;overflow:hidden;gap:5px}
.fb .chip{flex:1 1 0;min-width:0;padding-left:0;padding-right:0}
.fb .chip.c0{flex:0 0 auto;padding-left:11px;padding-right:11px}
.fb .cap{background:var(--surface)}
.fb .sn{display:block;height:1px;width:1px}
.fb .cam,.fb .pinw{transform-origin:0 0}
.fb .pin{pointer-events:none}
.fb .pin .pulse{animation:pulse 1.9s ease-out infinite}
@property --p1{syntax:'<number>';inherits:true;initial-value:0}
@property --p2{syntax:'<number>';inherits:true;initial-value:0}
@property --p3{syntax:'<number>';inherits:true;initial-value:0}
@property --p4{syntax:'<number>';inherits:true;initial-value:0}
@property --p5{syntax:'<number>';inherits:true;initial-value:0}
@property --p6{syntax:'<number>';inherits:true;initial-value:0}
@property --p7{syntax:'<number>';inherits:true;initial-value:0}
@supports (animation-timeline: view()){
  .stage{timeline-scope:--c0,--c1,--c2,--c3,--c4,--c5,--c6}
  .fb .stick{animation:p1 linear both,p2 linear both,p3 linear both,p4 linear both,p5 linear both,p6 linear both;animation-timeline:--c1,--c2,--c3,--c4,--c5,--c6;animation-range:cover 8% cover 30%}
  .fb .w{opacity:.14;animation:wr linear both;animation-timeline:var(--tl);animation-range:cover var(--a) cover var(--b)}
  .fb .rv{opacity:.2;animation:wr linear both;animation-timeline:var(--tl);animation-range:cover 2% cover 16%}
  @keyframes p1{to{--p1:1}}@keyframes p2{to{--p2:1}}@keyframes p3{to{--p3:1}}@keyframes p4{to{--p4:1}}
  @keyframes p5{to{--p5:1}}@keyframes p6{to{--p6:1}}@keyframes p7{to{--p7:1}}
  @keyframes wr{to{opacity:1}}
}

.num{display:inline-block;font-variant-numeric:tabular-nums}
.rank em.num{text-align:right}
@property --d1{syntax:'<integer>';inherits:false;initial-value:0}
@property --d2{syntax:'<integer>';inherits:false;initial-value:0}
@property --d3{syntax:'<integer>';inherits:false;initial-value:0}
@property --d4{syntax:'<integer>';inherits:false;initial-value:0}
@property --d5{syntax:'<integer>';inherits:false;initial-value:0}
@property --d6{syntax:'<integer>';inherits:false;initial-value:0}
@property --d7{syntax:'<integer>';inherits:false;initial-value:0}
@property --d8{syntax:'<integer>';inherits:false;initial-value:0}
@keyframes cnt{to{--d1:var(--t1,0);--d2:var(--t2,0);--d3:var(--t3,0);--d4:var(--t4,0);--d5:var(--t5,0);--d6:var(--t6,0);--d7:var(--t7,0);--d8:var(--t8,0)}}
@supports (animation-timeline: view()){
  .fb .cn{display:inline-block;font-variant-numeric:tabular-nums;counter-reset:c1 var(--d1) c2 var(--d2) c3 var(--d3) c4 var(--d4) c5 var(--d5) c6 var(--d6) c7 var(--d7) c8 var(--d8);animation:cnt linear both;animation-timeline:view();animation-range:entry 5% entry 70%}
  .fb .cn .real{display:none}
  .fb .cn::after{content:var(--tpl)}
}