/* ============================================================
   CUA TUNG - mẫu 1475
   Cát trắng mịn, kế sách cũng cần mịn
   Phông chữ: Source Serif 4 tiêu đề, Cabin nội dung.
   ============================================================ */
/* ---------- Phần 01 ---------- */
:root{
  --ctu-bg:#150b20;
  --ctu-bg-alt:#1b0e28;
  --ctu-panel:#1f112e;
  --ctu-panel-2:#251636;
  --ctu-line:#321f47;
  --ctu-cyan:#2230ee;
  --ctu-cyan-deep:#100e90;
  --ctu-orange:#cbfb3c;
  --ctu-ink:#f1e8fb;
  --ctu-mute:#a78fc2;
  --ctu-radius:16px;
  --ctu-shadow:0 18px 46px rgba(2,8,20,.55);
  --ctu-glow:0 0 0 1px rgb(34,48,238,.35),0 10px 34px rgb(34,48,238,.12);
  --ctu-menu-w:264px;
  --ctu-font-head:"Source Serif 4","Cabin",system-ui,sans-serif;
  --ctu-font-body:"Cabin","Source Serif 4",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body.ctu-body{
  font-family:var(--ctu-font-body);
  font-size:16px;line-height:1.7;
  color:var(--ctu-ink);
  background:
    radial-gradient(1000px 500px at 90% -5%,rgb(34,48,238,.08),transparent 60%),
    radial-gradient(800px 420px at -10% 40%,rgb(203,251,60,.05),transparent 60%),
    var(--ctu-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit}
strong,b{font-weight:700}
i{font-style:normal}
time{font-variant-numeric:tabular-nums}
::selection{background:var(--ctu-cyan);color:#06042a}

.ctu-shell{max-width:1180px;margin:0 auto;padding:0 28px}
.ctu-skip{
  position:fixed;top:-60px;left:16px;z-index:300;
  background:var(--ctu-cyan);color:#06042a;padding:10px 18px;border-radius:10px;
  transition:top .2s;font-weight:700;
}
.ctu-skip:focus{top:12px}

/* ---------- Thanh dọc cố định bên trái ---------- */
.ctu-menu{
  position:fixed;inset:0 auto 0 0;width:var(--ctu-menu-w);z-index:180;
  display:flex;flex-direction:column;gap:26px;
  background:linear-gradient(180deg,#190d26 0%,#150a20 100%);
  border-right:1px solid var(--ctu-line);
  padding:28px 20px 22px;
  overflow-y:auto;
  transition:transform .3s ease;
}
.ctu-brand{display:block;padding:0 6px}
.ctu-brand-img{width:196px;height:auto}
.ctu-nav{flex:1}
.ctu-nav-list{display:flex;flex-direction:column;gap:4px}
.ctu-nav-a{
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:12px;
  font-weight:600;font-size:14.5px;color:var(--ctu-mute);
  border:1px solid transparent;
  transition:color .2s,background .2s,border-color .2s,transform .2s;
}
.ctu-nav-a:hover{color:var(--ctu-ink);background:var(--ctu-panel);transform:translateX(4px)}
.ctu-nav-a.is-active{
  color:var(--ctu-cyan);background:rgb(34,48,238,.08);
  border-color:rgb(34,48,238,.3);
}
.ctu-nav-no{
  flex:none;width:32px;height:32px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ctu-panel-2);color:var(--ctu-cyan);
  font-family:var(--ctu-font-head);font-weight:800;font-size:12px;
}
.ctu-menu-foot{border-top:1px dashed var(--ctu-line);padding-top:16px;padding-left:6px;padding-right:6px}
.ctu-menu-note{font-size:12.5px;color:var(--ctu-mute)}
.ctu-menu-hot{margin-top:8px;font-size:13px;color:var(--ctu-mute)}
.ctu-menu-hot b{color:var(--ctu-orange)}

/* ---------- Thanh trên di động / ngăn kéo ---------- */
.ctu-topbar{
  display:none;position:sticky;top:0;z-index:170;
  align-items:center;gap:14px;
  background:rgb(21,11,32,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--ctu-line);
  padding:10px 16px;
}
.ctu-topbar-brand img{width:160px;height:auto}
.ctu-burger{
  display:flex;flex-direction:column;justify-content:center;gap:5px;
  width:46px;height:46px;border-radius:12px;flex:none;
  border:1px solid var(--ctu-line);background:var(--ctu-panel);
}
.ctu-burger span{
  display:block;width:20px;height:2.4px;margin:0 auto;border-radius:2px;
  background:var(--ctu-cyan);transition:transform .25s,opacity .2s;
}
.ctu-burger.is-open span:nth-child(1){transform:translateY(7.4px) rotate(45deg)}
.ctu-burger.is-open span:nth-child(2){opacity:0}
.ctu-burger.is-open span:nth-child(3){transform:translateY(-7.4px) rotate(-45deg)}
.ctu-mask{
  position:fixed;inset:0;z-index:175;background:rgba(3,7,16,.62);
  opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s;
}
.ctu-mask.is-on{opacity:1;visibility:visible}

.ctu-page{margin-left:var(--ctu-menu-w)}

/* ---------- Nút bấm ---------- */
.ctu-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 24px;border-radius:12px;
  font-family:var(--ctu-font-head);font-weight:800;font-size:15px;letter-spacing:.02em;
  transition:transform .2s,box-shadow .2s,background .2s,color .2s,border-color .2s;
}
.ctu-btn:hover{transform:translateY(-2px)}
.ctu-btn-cyan{background:var(--ctu-cyan);color:#06042a;box-shadow:0 10px 28px rgb(34,48,238,.28)}
.ctu-btn-cyan:hover{background:#4b58f5}
.ctu-btn-line{border:1.6px solid rgb(241,232,251,.35);color:var(--ctu-ink)}
.ctu-btn-line:hover{border-color:var(--ctu-cyan);color:var(--ctu-cyan)}
.ctu-btn b{font-weight:800}

/* ---------- Khu vực chính ---------- */
.ctu-hero{position:relative;overflow:hidden}
.ctu-hero-in{
  display:grid;grid-template-columns:1.02fr .98fr;gap:50px;align-items:center;
  padding-top:74px;padding-bottom:88px;
}
.ctu-hero-kicker{
  display:flex;align-items:center;gap:10px;
  font-weight:700;font-size:13px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ctu-cyan);
}
.ctu-hero-kicker span{width:34px;height:3px;border-radius:2px;background:var(--ctu-orange)}
.ctu-hero-title{
  font-family:var(--ctu-font-head);font-weight:800;
  font-size:clamp(30px,3.8vw,46px);line-height:1.16;
  margin:18px 0;letter-spacing:.01em;
  background:linear-gradient(92deg,#fff 30%,var(--ctu-cyan) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.ctu-hero-desc{color:var(--ctu-mute);font-size:16.5px;max-width:520px}
.ctu-hero-acts{display:flex;gap:14px;flex-wrap:wrap;margin:28px 0 34px}
.ctu-hero-stats{display:flex;gap:36px;flex-wrap:wrap}
.ctu-hero-stats li{display:flex;flex-direction:column}
.ctu-hero-stats strong{
  font-family:var(--ctu-font-head);font-weight:800;font-size:28px;color:var(--ctu-cyan);
}
.ctu-hero-stats span{font-size:13px;color:var(--ctu-mute)}

.ctu-hero-feat{display:flex;flex-direction:column;gap:18px}
.ctu-feat-main,.ctu-feat-sub{
  position:relative;border-radius:var(--ctu-radius);overflow:hidden;
  background:var(--ctu-panel);border:1px solid var(--ctu-line);
  transition:border-color .25s,box-shadow .25s,transform .25s;
}
.ctu-feat-main::before,.ctu-feat-main::after,
.ctu-cat-link::before,.ctu-cat-link::after{
  content:"";position:absolute;width:22px;height:22px;pointer-events:none;
  border:2px solid var(--ctu-cyan);opacity:.85;transition:opacity .25s;
}
.ctu-feat-main::before{top:10px;left:10px;border-right:0;border-bottom:0}
.ctu-feat-main::after{bottom:10px;right:10px;border-left:0;border-top:0}
.ctu-feat-main:hover,.ctu-feat-sub:hover{border-color:rgb(34,48,238,.5);box-shadow:var(--ctu-glow);transform:translateY(-4px)}
.ctu-feat-main img{width:100%;height:290px;object-fit:cover}
.ctu-feat-body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 22px}
.ctu-feat-body strong{
  font-family:var(--ctu-font-head);font-weight:800;font-size:19px;line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.ctu-feat-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ctu-mute)}
.ctu-feat-sub a{display:grid;grid-template-columns:170px 1fr;align-items:stretch}
.ctu-feat-sub img{width:100%;height:100%;min-height:120px;object-fit:cover}
.ctu-feat-sub-body{display:flex;flex-direction:column;gap:8px;padding:16px 18px}
.ctu-feat-sub-body strong{
  font-family:var(--ctu-font-head);font-weight:700;font-size:15px;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.ctu-chip{
  align-self:flex-start;display:inline-block;padding:4px 12px;border-radius:999px;
  background:rgb(34,48,238,.12);color:var(--ctu-cyan);
  border:1px solid rgb(34,48,238,.35);
  font-size:11.5px;font-weight:700;letter-spacing:.05em;
}
.ctu-chip-orange{background:rgb(203,251,60,.12);color:var(--ctu-orange);border-color:rgb(203,251,60,.4)}
.ctu-more{font-weight:700;color:var(--ctu-orange);font-size:13.5px;white-space:nowrap}

/* ---------- Khung khối ---------- */
.ctu-section{padding:80px 0}
.ctu-section-alt{background:var(--ctu-bg-alt)}
.ctu-head{margin-bottom:44px}
.ctu-head-split{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;flex-wrap:wrap}
.ctu-head-center{text-align:center;max-width:680px;margin:0 auto 44px}
.ctu-kicker{
  display:inline-block;margin-bottom:12px;padding:5px 14px;border-radius:999px;
  background:rgb(34,48,238,.1);color:var(--ctu-cyan);border:1px solid rgb(34,48,238,.3);
  font-weight:700;font-size:12px;letter-spacing:.14em;text-transform:uppercase;
}
.ctu-h2{
  font-family:var(--ctu-font-head);font-weight:800;
  font-size:clamp(24px,3vw,34px);line-height:1.22;letter-spacing:.01em;
}
.ctu-head-desc{margin-top:12px;color:var(--ctu-mute);font-size:15.5px;max-width:640px}
.ctu-head-center .ctu-head-desc{margin-left:auto;margin-right:auto}
.ctu-block-h{
  font-family:var(--ctu-font-head);font-weight:800;font-size:21px;
  padding-left:14px;border-left:4px solid var(--ctu-orange);margin-bottom:22px;
}

/* ---------- Thẻ HUD chuyên mục ---------- */
.ctu-catgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.ctu-cat-link{
  position:relative;display:flex;flex-direction:column;gap:10px;height:100%;
  background:var(--ctu-panel);border:1px solid var(--ctu-line);border-radius:var(--ctu-radius);
  padding:24px 20px 20px;
  transition:border-color .25s,box-shadow .25s,transform .25s;
}
.ctu-cat-link::before{top:8px;left:8px;border-right:0;border-bottom:0;opacity:0}
.ctu-cat-link::after{bottom:8px;right:8px;border-left:0;border-top:0;opacity:0}
.ctu-cat-link:hover{border-color:rgb(34,48,238,.5);box-shadow:var(--ctu-glow);transform:translateY(-6px)}
.ctu-cat-link:hover::before,.ctu-cat-link:hover::after{opacity:.9}
.ctu-cat-no{
  font-family:var(--ctu-font-head);font-weight:800;font-size:13px;letter-spacing:.1em;
  color:var(--ctu-orange);
}
.ctu-cat-name{font-family:var(--ctu-font-head);font-weight:800;font-size:18.5px}
.ctu-cat-desc{
  color:var(--ctu-mute);font-size:13.5px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.ctu-cat-go{
  margin-top:auto;align-self:flex-end;
  width:38px;height:38px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ctu-panel-2);color:var(--ctu-cyan);font-size:17px;font-weight:800;
  transition:background .25s,color .25s,transform .25s;
}
.ctu-cat-link:hover .ctu-cat-go{background:var(--ctu-cyan);color:#06042a;transform:translateX(4px)}

/* ---------- Bục vinh danh ---------- */
.ctu-podium{
  display:grid;grid-template-columns:1fr 1.16fr 1fr;gap:20px;align-items:end;
}
.ctu-podium-card{
  position:relative;border-radius:var(--ctu-radius);overflow:hidden;
  background:var(--ctu-panel);border:1px solid var(--ctu-line);
  transition:border-color .25s,box-shadow .25s,transform .25s;
}
.ctu-podium-card:hover{border-color:rgb(34,48,238,.5);box-shadow:var(--ctu-glow);transform:translateY(-6px)}
.ctu-podium-2{margin-bottom:34px}
.ctu-podium-3{margin-bottom:34px}
.ctu-podium-1{border-color:rgb(203,251,60,.45)}
.ctu-podium-rank{
  position:absolute;top:14px;left:14px;z-index:3;
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(6,12,24,.82);border:1px solid rgb(34,48,238,.5);
  font-family:var(--ctu-font-head);font-weight:800;font-size:19px;color:var(--ctu-cyan);
  backdrop-filter:blur(4px);
}
.ctu-podium-1 .ctu-podium-rank{border-color:rgb(203,251,60,.7);color:var(--ctu-orange)}
.ctu-podium-card img{width:100%;object-fit:cover}
.ctu-podium-1 img{height:280px}
.ctu-podium-2 img,.ctu-podium-3 img{height:210px}
.ctu-podium-body{display:flex;flex-direction:column;gap:9px;padding:18px 20px 20px}
.ctu-podium-body strong{
  font-family:var(--ctu-font-head);font-weight:800;font-size:16.5px;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.ctu-podium-meta{font-size:12.5px;color:var(--ctu-mute)}

/* ---------- Dòng thời gian ---------- */
.ctu-timeline{position:relative;display:flex;flex-direction:column;gap:14px;padding-left:26px}
.ctu-timeline::before{
  content:"";position:absolute;left:7px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--ctu-cyan),rgb(34,48,238,.08));
}
.ctu-tl-item{
  position:relative;display:grid;grid-template-columns:76px 1fr 44px;gap:18px;align-items:center;
  background:var(--ctu-panel);border:1px solid var(--ctu-line);border-radius:var(--ctu-radius);
  padding:16px 20px;transition:border-color .25s,box-shadow .25s,transform .25s;
}
.ctu-tl-item:hover{border-color:rgb(34,48,238,.5);box-shadow:var(--ctu-glow);transform:translateX(6px)}
.ctu-tl-node{
  position:absolute;left:-25px;top:50%;transform:translateY(-50%);
  width:12px;height:12px;border-radius:50%;
  background:var(--ctu-bg);border:3px solid var(--ctu-cyan);
}
.ctu-tl-date{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:var(--ctu-panel-2);border-radius:12px;padding:10px 6px;
}
.ctu-tl-date b{font-family:var(--ctu-font-head);font-weight:800;font-size:22px;color:var(--ctu-cyan);line-height:1.1}
.ctu-tl-date span{font-size:11.5px;color:var(--ctu-mute);font-weight:600}
.ctu-tl-link{display:flex;flex-direction:column;gap:6px;min-width:0}
.ctu-tl-link strong{
  font-family:var(--ctu-font-head);font-weight:700;font-size:16px;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.ctu-tl-desc{
  color:var(--ctu-mute);font-size:13.5px;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.ctu-tl-go{
  width:40px;height:40px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ctu-panel-2);color:var(--ctu-cyan);font-size:17px;font-weight:800;
  transition:background .25s,color .25s;
}
.ctu-tl-item:hover .ctu-tl-go{background:var(--ctu-cyan);color:#06042a}

/* ---------- Hỏi đáp ---------- */
.ctu-faq-shell{max-width:860px}
.ctu-faq{display:flex;flex-direction:column;gap:12px}
.ctu-faq-item{
  background:var(--ctu-panel);border:1px solid var(--ctu-line);border-radius:var(--ctu-radius);
  overflow:hidden;transition:border-color .25s,box-shadow .25s;
}
.ctu-faq-item[open]{border-color:rgb(34,48,238,.5);box-shadow:var(--ctu-glow)}
.ctu-faq-item summary{
  display:flex;align-items:center;gap:14px;cursor:pointer;list-style:none;
  padding:17px 20px;font-weight:700;font-size:15px;
}
.ctu-faq-item summary::-webkit-details-marker{display:none}
.ctu-faq-no{
  flex:none;width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ctu-panel-2);color:var(--ctu-cyan);
  font-family:var(--ctu-font-head);font-weight:800;font-size:12.5px;
}
.ctu-faq-item[open] .ctu-faq-no{background:var(--ctu-cyan);color:#06042a}
.ctu-faq-q{flex:1;font-family:var(--ctu-font-head);font-weight:700;line-height:1.5}
.ctu-faq-ico{
  flex:none;position:relative;width:30px;height:30px;border-radius:9px;
  background:var(--ctu-panel-2);
}
.ctu-faq-ico::before,.ctu-faq-ico::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--ctu-cyan);
  transform:translate(-50%,-50%);
}
.ctu-faq-ico::before{width:12px;height:2.4px}
.ctu-faq-ico::after{width:2.4px;height:12px;transition:transform .25s}
.ctu-faq-item[open] .ctu-faq-ico::after{transform:translate(-50%,-50%) scaleY(0)}
.ctu-faq-a{padding:0 20px 20px 68px;color:var(--ctu-mute);font-size:14.5px}

/* ---------- Giới thiệu ---------- */
.ctu-about-wrap{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.ctu-about-media{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid rgb(34,48,238,.35);box-shadow:var(--ctu-glow);
}
.ctu-about-media img{width:100%;height:auto}
.ctu-about-cap{
  position:absolute;left:0;right:0;bottom:0;padding:26px 22px 15px;
  color:var(--ctu-ink);font-size:13.5px;font-weight:600;
  background:linear-gradient(180deg,transparent,rgba(5,10,22,.9));
}
.ctu-about-desc{margin:18px 0 22px;color:var(--ctu-mute);font-size:15.5px}
.ctu-about-points{display:flex;flex-direction:column;gap:12px;margin-bottom:30px}
.ctu-about-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px}
.ctu-about-points b{
  flex:none;width:26px;height:26px;border-radius:8px;margin-top:1px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgb(34,48,238,.12);color:var(--ctu-cyan);border:1px solid rgb(34,48,238,.35);
  font-size:13px;
}

/* ---------- Phần 02 ---------- */
.ctu-ibanner{
  position:relative;overflow:hidden;
  background:
    radial-gradient(700px 300px at 85% 0,rgb(34,48,238,.14),transparent 60%),
    linear-gradient(120deg,#1e0d30,#150a20);
  border-bottom:1px solid var(--ctu-line);
}
.ctu-ibanner-in{padding:52px 28px 58px;position:relative;z-index:2}
.ctu-ibanner-kicker{
  font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--ctu-cyan);
}
.ctu-ibanner-head{
  font-family:var(--ctu-font-head);font-weight:800;font-size:clamp(26px,3.4vw,38px);
  margin:8px 0 10px;
}
.ctu-ibanner-desc{max-width:640px;color:var(--ctu-mute);font-size:15px}
.ctu-ibanner-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgb(34,48,238,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgb(34,48,238,.06) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:linear-gradient(90deg,transparent,#000 70%);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 70%);
}
.ctu-crumb{background:var(--ctu-bg-alt);border-bottom:1px solid var(--ctu-line)}
.ctu-crumb-line{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  padding-top:13px;padding-bottom:13px;font-size:13.5px;color:var(--ctu-mute);
}
.ctu-crumb a:hover{color:var(--ctu-cyan)}
.ctu-crumb-sep{color:#583d75}
.ctu-crumb-now{color:var(--ctu-ink);font-weight:700}

/* ---------- Trang danh sách ---------- */
.ctu-page{padding-top:52px}
.ctu-page-head{max-width:760px;margin-bottom:40px}
.ctu-page-h1{
  font-family:var(--ctu-font-head);font-weight:800;font-size:clamp(26px,3.4vw,38px);
  margin-bottom:16px;
}
.ctu-page-desc{color:var(--ctu-mute);font-size:15.5px}
.ctu-page-acts{display:flex;gap:14px;flex-wrap:wrap;margin-top:26px}
.ctu-list-wrap{display:grid;grid-template-columns:1fr 330px;gap:42px;align-items:start}
.ctu-rows{display:flex;flex-direction:column;gap:16px}
.ctu-row{
  background:var(--ctu-panel);border:1px solid var(--ctu-line);border-radius:var(--ctu-radius);
  overflow:hidden;transition:border-color .25s,box-shadow .25s,transform .25s;
}
.ctu-row:hover{border-color:rgb(34,48,238,.5);box-shadow:var(--ctu-glow);transform:translateX(6px)}
.ctu-row-link{display:grid;grid-template-columns:230px 1fr 46px;gap:20px;align-items:center;padding:16px}
.ctu-row-media{border-radius:12px;overflow:hidden;aspect-ratio:16/10}
.ctu-row-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.ctu-row:hover .ctu-row-media img{transform:scale(1.07)}
.ctu-row-body{display:flex;flex-direction:column;gap:7px;min-width:0}
.ctu-row-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--ctu-mute)}
.ctu-row-meta i{
  display:inline-block;padding:3px 10px;border-radius:999px;
  background:rgb(34,48,238,.12);color:var(--ctu-cyan);border:1px solid rgb(34,48,238,.3);
  font-size:11.5px;font-weight:700;
}
.ctu-row-title{
  font-family:var(--ctu-font-head);font-weight:700;font-size:17px;line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.ctu-row-desc{
  color:var(--ctu-mute);font-size:13.8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.ctu-row-go{
  width:40px;height:40px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ctu-panel-2);color:var(--ctu-cyan);font-size:17px;font-weight:800;
  transition:background .25s,color .25s;
}
.ctu-row:hover .ctu-row-go{background:var(--ctu-cyan);color:#06042a}
.ctu-pagi{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:38px}
.ctu-pagi button{
  min-width:42px;height:42px;padding:0 14px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ctu-panel);border:1px solid var(--ctu-line);
  font-family:var(--ctu-font-head);font-weight:800;font-size:14px;color:var(--ctu-ink);
  transition:background .2s,color .2s,border-color .2s;
}
.ctu-pagi .is-on,.ctu-pagi button:hover{background:var(--ctu-cyan);color:#06042a;border-color:var(--ctu-cyan)}
.ctu-pagi .is-off{opacity:.4;pointer-events:none}

/* ---------- Cột bên ---------- */
.ctu-side{display:flex;flex-direction:column;gap:22px}
.ctu-side-box{
  background:var(--ctu-panel);border:1px solid var(--ctu-line);border-radius:var(--ctu-radius);
  padding:24px;
}
.ctu-side-h{
  font-family:var(--ctu-font-head);font-weight:800;font-size:17px;
  padding-bottom:12px;margin-bottom:16px;border-bottom:2px solid var(--ctu-orange);
  display:inline-block;
}
.ctu-side-hot{display:flex;flex-direction:column;gap:14px}
.ctu-side-hot a{display:flex;gap:12px;align-items:center}
.ctu-side-hot img{flex:none;width:76px;height:58px;object-fit:cover;border-radius:10px}
.ctu-side-hot-body{display:flex;flex-direction:column;gap:4px;min-width:0}
.ctu-side-hot-body strong{
  font-size:13.5px;font-weight:700;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.ctu-side-hot-body time{font-size:12px;color:var(--ctu-mute)}
.ctu-side-hot a:hover strong{color:var(--ctu-cyan)}
.ctu-side-more{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-weight:700;font-size:13.5px;color:var(--ctu-cyan);
}
.ctu-side-more:hover{color:var(--ctu-orange)}
.ctu-side-list{display:flex;flex-direction:column;gap:12px}
.ctu-side-list a{display:flex;gap:12px;align-items:flex-start;font-size:13.8px;font-weight:600;line-height:1.5}
.ctu-side-list a:hover{color:var(--ctu-cyan)}
.ctu-side-num{
  flex:none;width:26px;height:26px;border-radius:8px;margin-top:1px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgb(34,48,238,.12);color:var(--ctu-cyan);border:1px solid rgb(34,48,238,.3);
  font-family:var(--ctu-font-head);font-weight:800;font-size:12.5px;
}
.ctu-side-note{background:linear-gradient(140deg,#140d3a,#180a30);border-color:rgb(34,48,238,.35)}
.ctu-side-note .ctu-side-h{color:var(--ctu-ink)}
.ctu-side-note p{font-size:14px;color:var(--ctu-mute);margin-bottom:18px}

/* ---------- Trang bài viết ---------- */
.ctu-article-wrap{display:grid;grid-template-columns:1fr 330px;gap:42px;align-items:start}
.ctu-article-h1{
  font-family:var(--ctu-font-head);font-weight:800;
  font-size:clamp(24px,3vw,34px);line-height:1.28;margin-bottom:16px;
}
.ctu-article-meta{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  padding-bottom:18px;margin-bottom:22px;border-bottom:1px solid var(--ctu-line);
  font-size:13.5px;color:var(--ctu-mute);
}
.ctu-meta-item b{color:var(--ctu-ink)}
.ctu-article-figure{
  border-radius:var(--ctu-radius);overflow:hidden;margin-bottom:26px;
  border:1px solid var(--ctu-line);
}
.ctu-article-body{font-size:16px;line-height:1.85;color:#d7c6ea}
.ctu-article-body h2{
  font-family:var(--ctu-font-head);font-weight:800;font-size:22px;color:var(--ctu-ink);
  margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--ctu-orange);
}
.ctu-article-body h3{
  font-family:var(--ctu-font-head);font-weight:700;font-size:18px;color:var(--ctu-ink);
  margin:26px 0 10px;
}
.ctu-article-body p{margin:14px 0}
.ctu-article-body ul,.ctu-article-body ol{margin:14px 0 14px 22px;list-style:disc}
.ctu-article-body ol{list-style:decimal}
.ctu-article-body li{margin:6px 0}
.ctu-article-body strong{color:var(--ctu-cyan)}
.ctu-article-body a{color:var(--ctu-cyan);text-decoration:underline}
.ctu-article-tags{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin-top:30px;padding-top:20px;border-top:1px dashed var(--ctu-line);
}
.ctu-tag-label{font-size:13px;font-weight:700;color:var(--ctu-mute)}
.ctu-tag{
  padding:6px 15px;border-radius:999px;background:var(--ctu-panel);border:1px solid var(--ctu-line);
  font-size:13px;font-weight:600;transition:border-color .2s,color .2s;
}
.ctu-tag:hover{border-color:var(--ctu-cyan);color:var(--ctu-cyan)}

/* ---------- Bài trước / Bài sau ---------- */
.ctu-switcher{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:40px}
.ctu-switcher-cell{
  background:var(--ctu-panel);border:1px solid var(--ctu-line);border-radius:var(--ctu-radius);
  padding:20px;display:flex;flex-direction:column;gap:8px;
  transition:border-color .25s,box-shadow .25s;
}
.ctu-switcher-cell:hover{border-color:rgb(34,48,238,.5);box-shadow:var(--ctu-glow)}
.ctu-switcher-next{text-align:right}
.ctu-switcher-label{
  font-size:11.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ctu-orange);
}
.ctu-switcher-link{font-weight:700;font-size:14.5px;line-height:1.5}
.ctu-switcher-link:hover{color:var(--ctu-cyan)}
.ctu-switcher-empty{font-size:13.5px;color:var(--ctu-mute)}
.ctu-related{margin-top:48px}

/* ---------- Lưới thẻ ---------- */
.ctu-grid{display:grid;gap:20px}
.ctu-grid-4{grid-template-columns:repeat(4,1fr)}
.ctu-card{
  background:var(--ctu-panel);border:1px solid var(--ctu-line);border-radius:var(--ctu-radius);
  overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s;
}
.ctu-card:hover{transform:translateY(-6px);box-shadow:var(--ctu-glow);border-color:rgb(34,48,238,.5)}
.ctu-card-link{display:flex;flex-direction:column;height:100%}
.ctu-card-media{position:relative;aspect-ratio:10/7;overflow:hidden}
.ctu-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.ctu-card:hover .ctu-card-media img{transform:scale(1.08)}
.ctu-card-media .ctu-chip{position:absolute;left:12px;bottom:12px;background:rgba(6,12,24,.82);backdrop-filter:blur(4px)}
.ctu-card-body{display:flex;flex-direction:column;gap:9px;padding:18px;flex:1}
.ctu-card-title{
  font-family:var(--ctu-font-head);font-weight:700;font-size:15.5px;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.ctu-card-desc{
  color:var(--ctu-mute);font-size:13.5px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.ctu-card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--ctu-mute);padding-top:8px;border-top:1px dashed var(--ctu-line);
}

/* ---------- Chuyên mục khác ---------- */
.ctu-other{margin-top:52px}
.ctu-other-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.ctu-other-list a{
  display:flex;align-items:center;gap:14px;
  background:var(--ctu-panel);border:1px solid var(--ctu-line);border-radius:var(--ctu-radius);
  padding:14px 18px;transition:border-color .25s,transform .25s;
}
.ctu-other-list a:hover{border-color:rgb(34,48,238,.5);transform:translateX(6px)}
.ctu-other-no{
  flex:none;font-family:var(--ctu-font-head);font-weight:800;font-size:15px;color:var(--ctu-orange);
}
.ctu-other-body{display:flex;flex-direction:column;gap:3px;min-width:0;flex:1}
.ctu-other-body strong{font-family:var(--ctu-font-head);font-weight:700;font-size:15px}
.ctu-other-body>span{
  color:var(--ctu-mute);font-size:12.8px;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.ctu-other-go{color:var(--ctu-cyan);font-weight:800}

/* ---------- Liên kết website ---------- */
.ctu-flink{background:var(--ctu-bg-alt);border-top:1px solid var(--ctu-line);padding:54px 0}
.ctu-flink-head{text-align:center;max-width:600px;margin:0 auto 30px}
.ctu-flink-title{font-family:var(--ctu-font-head);font-weight:800;font-size:24px;margin-bottom:10px}
.ctu-flink-note{color:var(--ctu-mute);font-size:14px}
.ctu-flink-row{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.ctu-flink-chip{
  display:flex;align-items:center;gap:12px;
  background:var(--ctu-panel);border:1px solid var(--ctu-line);border-radius:999px;
  padding:8px 20px 8px 8px;font-weight:700;font-size:14px;
  transition:transform .25s,border-color .25s,box-shadow .25s;
}
.ctu-flink-chip:hover{transform:translateY(-4px);border-color:rgb(34,48,238,.5);box-shadow:var(--ctu-glow)}
.ctu-flink-logo{width:40px;height:40px;border-radius:50%;object-fit:cover}

/* ---------- Chân trang ---------- */
.ctu-footer{background:#10081a;border-top:1px solid var(--ctu-line);color:#c0a9d8;padding:60px 0 0}
.ctu-foot-grid{display:grid;grid-template-columns:1.2fr 1fr 1.2fr;gap:44px;padding-bottom:40px}
.ctu-foot-h{
  font-family:var(--ctu-font-head);font-weight:800;font-size:16px;color:var(--ctu-ink);
  margin-bottom:18px;position:relative;padding-bottom:10px;
}
.ctu-foot-h::after{
  content:"";position:absolute;left:0;bottom:0;width:34px;height:3px;border-radius:2px;background:var(--ctu-cyan);
}
.ctu-foot-list{display:flex;flex-direction:column;gap:10px;font-size:14px}
.ctu-foot-list a{color:#c0a9d8;transition:color .2s,padding-left .2s}
.ctu-foot-list a:hover{color:var(--ctu-cyan);padding-left:6px}
.ctu-foot-cats{display:grid;grid-template-columns:1fr 1fr;gap:10px 22px}
.ctu-foot-info{display:flex;flex-direction:column;gap:14px;font-size:14px}
.ctu-foot-info li{display:flex;flex-direction:column;gap:3px}
.ctu-foot-key{font-size:11.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#7a5f99}
.ctu-foot-val{color:#e8dbf8}
.ctu-foot-slogan{margin-top:18px;font-size:13px;color:#7a5f99;border-top:1px dashed var(--ctu-line);padding-top:16px}
.ctu-foot-base{
  border-top:1px solid var(--ctu-line);padding:22px 0 26px;
  display:flex;flex-direction:column;gap:10px;font-size:13px;color:#7a5f99;
}
.ctu-foot-copy p{margin:0}
.ctu-foot-meta{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.ctu-foot-sitemap{color:var(--ctu-cyan);font-weight:700}
.ctu-foot-sitemap:hover{text-decoration:underline}

/* ---------- Về đầu trang ---------- */
.ctu-top-btn{
  position:fixed;right:22px;bottom:22px;z-index:160;
  width:50px;height:50px;border-radius:14px;
  background:var(--ctu-cyan);color:#06042a;font-size:20px;font-weight:800;
  box-shadow:0 12px 30px rgb(34,48,238,.35);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s,transform .25s,visibility .25s,background .2s;
}
.ctu-top-btn.is-on{opacity:1;visibility:visible;transform:none}
.ctu-top-btn:hover{background:var(--ctu-orange);color:#1e2a00}

/* ---------- Trang 404 ---------- */
.ctu-404{
  min-height:62vh;display:flex;align-items:center;justify-content:center;text-align:center;
  padding:70px 24px;
}
.ctu-404-no{
  font-family:var(--ctu-font-head);font-weight:800;font-size:clamp(84px,16vw,150px);
  line-height:1;
  background:linear-gradient(92deg,var(--ctu-cyan),var(--ctu-orange));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.ctu-404-title{
  font-family:var(--ctu-font-head);font-weight:800;font-size:clamp(20px,3vw,28px);
  margin:14px 0 12px;
}
.ctu-404-desc{color:var(--ctu-mute);font-size:15px;max-width:480px;margin:0 auto 30px}
.ctu-404-acts{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------- Hiệu ứng xuất hiện (do JS điều khiển) ---------- */
html.ctu-js .ctu-reveal{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
html.ctu-js .ctu-reveal.is-in{opacity:1;transform:none}

/* ---------- Phần 03 ---------- */
@media (max-width:1180px){
  .ctu-grid-4{grid-template-columns:repeat(2,1fr)}
  .ctu-catgrid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .ctu-menu{transform:translateX(-105%);box-shadow:var(--ctu-shadow)}
  .ctu-menu.is-open{transform:translateX(0)}
  .ctu-page{margin-left:0}
  .ctu-topbar{display:flex}
  .ctu-hero-in{grid-template-columns:1fr;gap:44px;padding-top:56px;padding-bottom:64px}
  .ctu-list-wrap,.ctu-article-wrap{grid-template-columns:1fr}
  .ctu-side{display:grid;grid-template-columns:1fr 1fr;align-items:start}
  .ctu-side-note{grid-column:1/-1}
  .ctu-about-wrap{grid-template-columns:1fr;gap:40px}
  .ctu-podium{grid-template-columns:1fr;align-items:stretch}
  .ctu-podium-2,.ctu-podium-3{margin-bottom:0}
  .ctu-podium-1 img,.ctu-podium-2 img,.ctu-podium-3 img{height:220px}
}
@media (max-width:640px){
  .ctu-section{padding:58px 0}
  .ctu-shell{padding:0 18px}
  .ctu-grid-4,.ctu-catgrid{grid-template-columns:1fr}
  .ctu-other-list{grid-template-columns:1fr}
  .ctu-hero-stats{gap:22px}
  .ctu-side{grid-template-columns:1fr}
  .ctu-switcher{grid-template-columns:1fr}
  .ctu-switcher-next{text-align:left}
  .ctu-foot-grid{grid-template-columns:1fr}
  .ctu-tl-item{grid-template-columns:60px 1fr;padding:14px}
  .ctu-tl-go{display:none}
  .ctu-row-link{grid-template-columns:1fr;padding:14px}
  .ctu-row-media{display:none}
  .ctu-row-go{display:none}
  .ctu-faq-a{padding-left:20px}
  .ctu-flink-chip{font-size:13px;padding:6px 16px 6px 6px}
  .ctu-flink-logo{width:34px;height:34px}
  .ctu-feat-sub a{grid-template-columns:1fr}
  .ctu-feat-sub img{min-height:160px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  html.ctu-js .ctu-reveal{opacity:1;transform:none}
}

/* ---------- Lớp bổ trợ ---------- */
.ctu-foot-col,
.ctu-hero-copy,
.ctu-about-copy,
.ctu-ibanner-title,
.ctu-list-main,
.ctu-show-main { }

/* ---------- Khối khác biệt hoá ---------- */
.ctu-band{background:rgb(66,59,145);color:ctu-related;border-top:1px solid rgba(0,0,0,.12);border-bottom:1px solid rgba(0,0,0,.12);padding:16px 0}
.ctu-band-in{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;gap:40px;justify-content:center;flex-wrap:wrap;font-size:12.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase}
.ctu-band-in span{display:inline-flex;align-items:center;gap:10px}
.ctu-band-in span::before{content:"";width:8px;height:8px;border-radius:50%;background:rgb(143,71,209)}
.ctu-stat{background:ctu-related;padding:44px 0}
.ctu-stat-in{max-width:1200px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.ctu-stat-cell{background:#fff;border:1px solid rgba(0,0,0,.08);border-radius:16px;padding:26px 18px;text-align:center}
.ctu-stat-cell b{display:block;font-family:var(--font-head,Source Serif 4,serif);font-size:34px;line-height:1.1;color:rgb(66,59,145)}
.ctu-stat-cell span{display:block;margin-top:8px;font-size:13px;color:rgb(33,31,51);opacity:.8}
.ctu-quote{background:rgb(33,31,51);color:ctu-related;padding:52px 0}
.ctu-quote-in{max-width:900px;margin:0 auto;padding:0 20px;text-align:center;font-family:var(--font-head,Source Serif 4,serif);font-size:26px;line-height:1.5}
@media(max-width:900px){.ctu-band-in{justify-content:flex-start;flex-wrap:nowrap;overflow-x:auto;gap:28px}.ctu-stat-in{grid-template-columns:repeat(2,1fr)}.ctu-quote-in{font-size:20px}}