/* ReHub.vn Data Emagazine - Vanilla HTML/CSS/JS, no SVG/JSON */
:root{
  --bg:#002120;
  --bg-2:#03191b;
  --panel:rgba(255,255,255,.07);
  --text:#f4fffb;
  --muted:#b6cbc7;
  --green:#00df81;
  --cyan:#08ffe7;
  --paper:#f7faf7;
  --ink:#071d1d;
  --danger:#ffb35c;
  --line:rgba(8,255,231,.18);
  --max:1120px;
  --serif: Georgia, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --radius:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--text);
  background:var(--bg);
  line-height:1.65;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";
  position:fixed; inset:0; pointer-events:none; z-index:-1;
  background:
    radial-gradient(circle at 10% 10%, rgba(8,255,231,.12), transparent 30%),
    radial-gradient(circle at 90% 20%, rgba(0,223,129,.10), transparent 25%),
    linear-gradient(135deg, var(--bg), var(--bg-2));
}
a{color:inherit}
.skip-link{position:absolute;left:-999px;top:10px;background:#fff;color:#000;padding:.7rem 1rem;z-index:99}
.skip-link:focus{left:10px}
.read-progress{position:fixed;top:0;left:0;width:100%;height:4px;background:rgba(255,255,255,.08);z-index:80}
.read-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--green),var(--cyan))}
.site-header{
  position:sticky; top:0; z-index:70;
  display:flex; align-items:center; justify-content:space-between;
  padding:.8rem clamp(1rem,3vw,2.4rem);
  background:rgba(0,33,32,.78); backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.brand img{display:block;max-width:150px;height:auto}
.top-nav{display:flex;gap:1rem;align-items:center;font-size:.9rem;color:var(--muted)}
.top-nav a{text-decoration:none;padding:.45rem .55rem;border-radius:999px}
.top-nav a:hover,.top-nav a:focus-visible{background:rgba(255,255,255,.1);outline:0}
.hero{min-height:96vh;position:relative;display:grid;place-items:end start;overflow:hidden}
.hero picture,.hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg, rgba(0,33,32,.96) 0%, rgba(0,33,32,.55) 45%, rgba(0,33,32,.20) 100%)}
.hero-content{position:relative;z-index:2;width:min(var(--max),100%);padding:9rem clamp(1rem,5vw,3rem) 5rem;margin:auto}
.eyebrow,.section-kicker{text-transform:uppercase;letter-spacing:.16em;color:var(--cyan);font-size:.76rem;font-weight:800}
h1,h2,h3{line-height:1.08;margin:0 0 1rem}
h1{font-size:clamp(2.6rem,8vw,6.9rem);letter-spacing:-.06em;max-width:1050px}
.deck{font-size:clamp(1.08rem,2vw,1.45rem);max-width:820px;color:#ddfffa}
.byline{color:var(--muted);font-size:.95rem;margin-top:1.4rem}
.toc{
  width:min(var(--max),calc(100% - 2rem));margin:2rem auto 4rem;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:.7rem
}
.toc a{border:1px solid var(--line);background:var(--panel);padding:.85rem 1rem;border-radius:16px;text-decoration:none;color:#d8fff7}
.toc a:hover,.toc a:focus-visible{border-color:var(--cyan);outline:0}
.section{width:min(var(--max),calc(100% - 2rem));margin:0 auto 6rem}
.section h2{font-size:clamp(2rem,5vw,4.1rem);letter-spacing:-.045em}
.section h3{font-size:clamp(1.25rem,2vw,1.7rem)}
.lead,.answer{font-size:clamp(1.05rem,1.8vw,1.28rem);color:#e7fffb}
.summary-block,.analysis-block,.method,.faq{
  background:linear-gradient(135deg,rgba(255,255,255,.08),rgba(255,255,255,.03));
  border:1px solid var(--line);border-radius:var(--radius);padding:clamp(1.2rem,4vw,3rem)
}
.takeaways{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:1rem;margin-top:2rem}
.takeaways article,.metric-card,.chart-card,.insight-grid article,.split-panel>div{
  background:rgba(255,255,255,.08);border:1px solid var(--line);border-radius:20px;padding:1.2rem
}
.takeaways strong{display:block;font-size:clamp(2rem,4vw,3.4rem);line-height:1;color:var(--green);letter-spacing:-.04em}
.takeaways span{display:block;color:var(--muted);margin-top:.6rem}
.narrative{max-width:860px}
.narrative p,.method p,.faq p{color:#d6e8e5;font-size:1.05rem}
.pullquote,.final-quote{
  margin:2.2rem 0;padding:2rem;border-left:4px solid var(--green);
  background:rgba(0,223,129,.08);border-radius:0 22px 22px 0
}
.pullquote p,.final-quote p{font-family:var(--serif);font-size:clamp(1.5rem,3vw,2.25rem);line-height:1.25;color:#fff;margin:0}
.wide-figure{margin:2.5rem 0}
.wide-figure img{width:100%;height:auto;border-radius:var(--radius);border:1px solid var(--line);display:block}
figcaption{color:var(--muted);font-size:.92rem;margin-top:.8rem}
.dashboard-section{width:min(1280px,calc(100% - 2rem))}
.dashboard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin:2rem 0}
.metric-card .label{color:var(--muted);display:block}
.metric-card strong{display:block;font-size:clamp(1.8rem,3vw,2.8rem);letter-spacing:-.04em;color:#fff;line-height:1.05;margin:.8rem 0}
.delta{color:var(--green);font-weight:800}.delta.danger{color:var(--danger)}
.metric-card small{color:var(--muted)}
.visual-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}
.chart-card figcaption{margin:0 0 1rem;color:#ecfffb}
.chart-card figcaption strong{display:block;font-size:1.15rem}
.chart-card figcaption span{display:block;color:var(--muted);font-size:.95rem;margin-top:.25rem}
canvas{width:100%;height:auto;display:block;background:rgba(0,33,32,.72);border-radius:16px}
.chart-fallback{font-size:.85rem;color:var(--muted)}
.split-panel{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin:2rem 0}
.scrolly{width:min(1280px,calc(100% - 2rem))}
.scrolly-wrap{display:grid;grid-template-columns:minmax(320px,520px) 1fr;gap:2rem;align-items:start}
.scrolly-graphic{position:sticky;top:6rem;height:72vh;min-height:520px;border:1px solid var(--line);border-radius:var(--radius);background:radial-gradient(circle at center,rgba(8,255,231,.16),rgba(255,255,255,.04));display:grid;place-items:center;padding:2rem}
.capital-orbit{position:relative;width:min(380px,78vw);height:min(380px,78vw);border:1px dashed rgba(8,255,231,.45);border-radius:50%}
.capital-orbit::before,.capital-orbit::after{content:"";position:absolute;border:1px dashed rgba(0,223,129,.25);border-radius:50%}
.capital-orbit::before{inset:18%}.capital-orbit::after{inset:34%}
.capital-orbit span{position:absolute;display:grid;place-items:center;width:110px;height:110px;border-radius:50%;background:#002120;border:1px solid var(--cyan);box-shadow:0 0 30px rgba(8,255,231,.22);font-weight:800;text-align:center}
.capital-orbit span:nth-child(1){left:50%;top:-20px;transform:translateX(-50%)}
.capital-orbit span:nth-child(2){right:-25px;top:48%;transform:translateY(-50%)}
.capital-orbit span:nth-child(3){left:50%;bottom:-20px;transform:translateX(-50%)}
.capital-orbit span:nth-child(4){left:-25px;top:48%;transform:translateY(-50%)}
.capital-orbit span.active{background:linear-gradient(135deg,var(--green),var(--cyan));color:#002120}
.capital-caption{position:absolute;left:2rem;right:2rem;bottom:2rem;color:#e8fffb;font-weight:700}
.step{min-height:62vh;border-left:1px solid var(--line);padding:2rem 0 2rem 1.5rem}
.step p{color:#d6e8e5}
.insight-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}
.faq details{border-top:1px solid var(--line);padding:1rem 0}
.faq summary{cursor:pointer;font-weight:800;color:#fff}
.source-list{color:#d6e8e5}
.data-warning{border:1px solid rgba(255,179,92,.35);padding:1rem;border-radius:16px;background:rgba(255,179,92,.08)}
.site-footer{padding:3rem clamp(1rem,5vw,3rem);border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:1rem;color:var(--muted)}
.back-top{color:#fff;text-decoration:none;border:1px solid var(--line);border-radius:999px;padding:.6rem 1rem}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
@media (max-width:900px){
  .top-nav{display:none}
  .dashboard-grid,.visual-grid,.split-panel,.insight-grid,.scrolly-wrap{grid-template-columns:1fr}
  .scrolly-graphic{position:relative;top:auto;height:auto;min-height:440px}
  .step{min-height:auto;padding:1.2rem 0 1.2rem 1rem}
}
@media (max-width:560px){
  .site-header{position:relative}
  .hero{min-height:86vh}
  .hero-content{padding-top:5rem}
  .section{margin-bottom:4rem}
  .toc{grid-template-columns:1fr}
  .takeaways{grid-template-columns:1fr}
  .site-footer{display:block}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .scrolly-graphic{position:relative;top:auto}
}