/* ==========================================================================
   Theme gtvthanoi — Trường Trung cấp Giao thông Vận tải Hà Nội
   Quy ước: mỗi vùng giao diện có ĐÚNG MỘT khối CSS, template chỉ chứa HTML + class.
   Tông màu: xanh dương đậm (ngành GTVT) + vàng tín hiệu.
   ========================================================================== */

/* ---------- 0. Token ---------- */
:root{
  --gt-blue:#0B3C7E;
  --gt-blue-700:#0A3269;
  --gt-blue-500:#1659B5;
  --gt-blue-100:#E3ECF8;
  --gt-blue-50:#F1F5FB;
  --gt-yellow:#F6B400;
  --gt-yellow-600:#D99A00;
  --gt-ink:#172033;
  --gt-text:#2A3443;
  --gt-muted:#66717F;
  --gt-line:#E2E7EF;
  --gt-bg:#F5F7FA;
  --gt-white:#fff;
  --gt-red:#C62828;
  --gt-radius:12px;
  --gt-radius-sm:8px;
  --gt-shadow:0 8px 24px rgba(11,60,126,.08);
  --gt-shadow-sm:0 2px 8px rgba(11,60,126,.06);
  --gt-container:1200px;
  --gt-font:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}

/* ---------- 1. Reset / base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body.gt-body{margin:0;font-family:var(--gt-font);font-size:15.5px;line-height:1.6;color:var(--gt-text);background:var(--gt-white)}
/* Base bọc trong :where() → độ ưu tiên chỉ bằng 1 class, để CSS từng vùng (menu, footer…) luôn thắng.
   Trước đây ".gt-body a:not([class])" (0,2,1) đè màu chữ menu/footer thành xanh trên nền xanh. */
.gt-body :where(img){max-width:100%;height:auto;display:block}
.gt-body :where(a:not([class])){color:var(--gt-blue-500);text-decoration:none}
.gt-body :where(a:not([class])):hover{text-decoration:underline}
.gt-body :where(h1,h2,h3,h4){margin:0;line-height:1.25;color:var(--gt-ink);font-weight:700}
.gt-body :where(p){margin:0 0 .9em}
.gt-body :where(ul,ol){margin:0;padding:0}
.gt-body :where(button,input,select,textarea){font:inherit;color:inherit}
.gt-container{width:100%;max-width:var(--gt-container);margin:0 auto;padding:0 16px}
.gt-skip{position:absolute;left:-999px;top:0;background:var(--gt-yellow);color:var(--gt-ink);padding:8px 14px;z-index:1000}
.gt-skip:focus{left:8px;top:8px}
.gt-main{min-height:40vh}

/* ---------- 2. Nút, nhãn, tiêu đề mục ---------- */
.gt-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:999px;font-weight:600;font-size:14.5px;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s,color .15s;white-space:nowrap}
.gt-btn:hover{transform:translateY(-1px);box-shadow:var(--gt-shadow-sm)}
.gt-btn--yellow{background:var(--gt-yellow);color:var(--gt-ink)}
.gt-btn--yellow:hover{background:var(--gt-yellow-600);color:var(--gt-ink)}
.gt-btn--blue{background:var(--gt-blue);color:#fff}
.gt-btn--blue:hover{background:var(--gt-blue-700);color:#fff}
.gt-btn--ghost{background:transparent;color:var(--gt-blue);border-color:var(--gt-blue-100)}
.gt-btn--ghost:hover{background:var(--gt-blue-50);color:var(--gt-blue)}
.gt-btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.gt-btn--outline-light:hover{background:rgba(255,255,255,.12);color:#fff}
.gt-btn--lg{padding:14px 28px;font-size:16px}
.gt-btn--block{display:flex;width:100%}
.gt-link{color:var(--gt-blue-500);font-weight:600;text-decoration:none;font-size:14.5px}
.gt-link:hover{text-decoration:underline}
.gt-tag{display:inline-block;background:var(--gt-blue-100);color:var(--gt-blue);font-size:12px;font-weight:700;letter-spacing:.3px;text-transform:uppercase;padding:4px 10px;border-radius:999px;text-decoration:none}
.gt-eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:1.2px;text-transform:uppercase;color:var(--gt-yellow-600);margin-bottom:6px}
.gt-eyebrow--light{color:var(--gt-yellow)}
.gt-meta{font-size:12.5px;color:var(--gt-muted);display:inline-flex;gap:10px;align-items:center}
.gt-meta span+time::before{content:"·";margin-right:10px}
.gt-sec-head{margin-bottom:22px}
.gt-sec-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;border-bottom:2px solid var(--gt-line);padding-bottom:10px}
.gt-sec-title{font-size:26px;position:relative}
.gt-sec-head--row .gt-sec-title::after{content:"";position:absolute;left:0;bottom:-12px;width:64px;height:3px;background:var(--gt-yellow);border-radius:2px}
.gt-sec-title--sm{font-size:20px}
.gt-empty{padding:28px;text-align:center;color:var(--gt-muted);background:var(--gt-bg);border-radius:var(--gt-radius)}

/* ---------- 3. Header: topbar ---------- */
.gt-topbar{background:var(--gt-blue-700);color:#D5E2F5;font-size:13px}
.gt-topbar__in{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px}
.gt-topbar__left,.gt-topbar__right{display:flex;align-items:center;gap:18px;min-width:0}
.gt-topbar__item{display:inline-flex;align-items:center;gap:6px;color:inherit;text-decoration:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.gt-topbar__item svg{flex:none;opacity:.8}
.gt-topbar__item--hot{color:var(--gt-yellow);font-weight:700}
.gt-search{display:flex;align-items:center;background:rgba(255,255,255,.1);border-radius:999px;padding:2px 2px 2px 12px;border:1px solid rgba(255,255,255,.15)}
.gt-search input{background:transparent;border:0;outline:0;color:#fff;width:150px;font-size:13px}
.gt-search input::placeholder{color:#B9CBE6}
.gt-search button{background:var(--gt-yellow);color:var(--gt-ink);border:0;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;cursor:pointer}
.gt-search--page{background:var(--gt-bg);border-color:var(--gt-line);max-width:520px;margin-bottom:22px;padding:4px 4px 4px 16px}
.gt-search--page input{color:var(--gt-ink);width:100%;font-size:15px}
.gt-search--page input::placeholder{color:var(--gt-muted)}
.gt-search--page button{width:auto;height:auto;border-radius:999px;padding:9px 18px;font-weight:600}

/* ---------- 4. Header: brandbar ---------- */
.gt-brandbar{background:#fff;border-bottom:1px solid var(--gt-line)}
.gt-brandbar__in{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 16px}
.gt-brand{display:flex;align-items:center;gap:14px;text-decoration:none;color:inherit;min-width:0}
.gt-brand__logo{width:72px;height:72px;object-fit:contain;flex:none}
.gt-brand__mark{width:64px;height:64px;border-radius:14px;background:linear-gradient(135deg,var(--gt-blue),var(--gt-blue-500));color:#fff;display:grid;place-items:center;font-weight:800;font-size:22px;flex:none}
.gt-brand__text{display:flex;flex-direction:column;min-width:0}
.gt-brand__sup{font-size:11.5px;letter-spacing:.8px;text-transform:uppercase;color:var(--gt-muted);font-weight:600}
.gt-brand__name{font-size:19px;font-weight:800;color:var(--gt-blue);text-transform:uppercase;line-height:1.2}
.gt-brand__slogan{font-size:13px;color:var(--gt-muted);font-style:italic}
.gt-brandbar__cta{display:flex;gap:10px;flex:none}
.gt-burger{display:none;width:44px;height:44px;border:1px solid var(--gt-line);background:#fff;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer}
.gt-burger span{display:block;width:22px;height:2px;background:var(--gt-blue);transition:transform .2s,opacity .2s}
.gt-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.gt-burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.gt-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 5. Header: nav (dải màu riêng, dropdown 3 cấp) ---------- */
.gt-nav{background:var(--gt-blue);box-shadow:0 2px 0 var(--gt-yellow)}
.gt-menu{list-style:none;display:flex;align-items:stretch}
.gt-menu--main{justify-content:space-between}
.gt-menu__item{position:relative}
.gt-menu__item>a{display:flex;align-items:center;gap:5px;padding:0 14px;height:50px;color:#fff;font-weight:600;font-size:14.5px;text-decoration:none;text-transform:uppercase;letter-spacing:.2px;white-space:nowrap;transition:background .15s}
.gt-menu__item>a{position:relative}
.gt-menu__item>a::after{content:"";position:absolute;left:14px;right:14px;bottom:0;height:3px;border-radius:3px 3px 0 0;background:var(--gt-yellow);transform:scaleX(0);transition:transform .2s}
.gt-menu__item>a:hover,.gt-menu__item:focus-within>a,.gt-menu__item.is-active>a{background:rgba(255,255,255,.08);color:var(--gt-yellow)}
.gt-menu__item>a:hover::after,.gt-menu__item.is-active>a::after{transform:scaleX(1)}
.gt-menu__caret{opacity:.75}
.gt-menu__toggle{display:none}
.gt-menu__sub{list-style:none;position:absolute;top:100%;left:0;min-width:240px;background:#fff;border-radius:0 0 var(--gt-radius-sm) var(--gt-radius-sm);box-shadow:var(--gt-shadow);padding:6px 0;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .15s,transform .15s,visibility .15s;z-index:60;border-top:3px solid var(--gt-yellow)}
.gt-menu__item:hover>.gt-menu__sub,.gt-menu__item:focus-within>.gt-menu__sub{opacity:1;visibility:visible;transform:translateY(0)}
.gt-menu__subitem{position:relative}
.gt-menu__subitem>a{display:block;padding:10px 18px;color:var(--gt-text);text-decoration:none;font-size:14.5px;font-weight:500;border-left:3px solid transparent;transition:background .15s,color .15s,border-color .15s}
.gt-menu__subitem>a:hover{background:var(--gt-blue-50);color:var(--gt-blue);border-left-color:var(--gt-yellow)}
.gt-menu__subitem.has-sub>a::after{content:"›";float:right;color:var(--gt-muted)}
.gt-menu__sub--lv3{top:-6px;left:100%;border-top:0;border-left:3px solid var(--gt-yellow);border-radius:var(--gt-radius-sm)}
.gt-menu__subitem:hover>.gt-menu__sub--lv3{opacity:1;visibility:visible;transform:translateY(0)}
.gt-menu__sub--lv3 li a{display:block;padding:9px 18px;color:var(--gt-text);text-decoration:none;font-size:14px}
.gt-menu__sub--lv3 li a:hover{background:var(--gt-blue-50);color:var(--gt-blue)}

/* ---------- 6. Hero + thông báo ---------- */
.gt-hero{background:linear-gradient(180deg,var(--gt-blue-50) 0%,#fff 100%);padding:22px 0 26px}
.gt-hero__in{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:22px}
.gt-slider{position:relative;border-radius:var(--gt-radius);overflow:hidden;background:var(--gt-blue);min-height:380px;box-shadow:var(--gt-shadow)}
.gt-slider__track{position:relative;height:100%;min-height:380px}
.gt-slide{position:absolute;inset:0;opacity:0;transition:opacity .6s}
.gt-slide.is-active{opacity:1;position:relative}
.gt-slide img{width:100%;height:100%;min-height:380px;object-fit:cover}
.gt-slide__cap{position:absolute;left:0;right:0;bottom:0;padding:18px 22px;background:linear-gradient(0deg,rgba(11,60,126,.85),transparent);color:#fff;font-weight:700;font-size:18px}
.gt-slider__btn{position:absolute;top:50%;transform:translateY(-50%);width:40px;height:40px;border-radius:50%;border:0;background:rgba(255,255,255,.85);color:var(--gt-blue);font-size:26px;line-height:1;cursor:pointer;display:grid;place-items:center;z-index:2}
.gt-slider__btn--prev{left:12px}
.gt-slider__btn--next{right:12px}
.gt-slider__dots{position:absolute;bottom:12px;left:0;right:0;display:flex;justify-content:center;gap:6px;z-index:2}
.gt-slider__dots button{width:9px;height:9px;border-radius:50%;border:0;background:rgba(255,255,255,.5);cursor:pointer;padding:0}
.gt-slider__dots button.is-active{background:var(--gt-yellow);width:22px;border-radius:5px}
.gt-hero__text{padding:46px 44px;color:#fff;background:radial-gradient(1200px 400px at 90% -20%,rgba(246,180,0,.25),transparent 60%),linear-gradient(135deg,var(--gt-blue-700),var(--gt-blue-500));min-height:380px;display:flex;flex-direction:column;justify-content:center}
.gt-hero__text h1{color:#fff;font-size:38px;font-weight:800;line-height:1.15;margin:6px 0 14px;text-transform:uppercase}
.gt-hero__text p{font-size:16.5px;color:#DCE7F7;max-width:560px}
.gt-hero__actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}
.gt-hero__notice{background:#fff;border:1px solid var(--gt-line);border-radius:var(--gt-radius);box-shadow:var(--gt-shadow-sm);display:flex;flex-direction:column;overflow:hidden}
.gt-hero__notice-title{display:flex;justify-content:space-between;align-items:center;background:var(--gt-blue);color:#fff;padding:13px 16px;font-size:15px;text-transform:uppercase;letter-spacing:.3px;border-bottom:3px solid var(--gt-yellow)}
.gt-hero__notice-title span{color:#fff}
.gt-hero__notice-title a{color:var(--gt-yellow);font-size:12.5px;text-transform:none;letter-spacing:0;text-decoration:none;font-weight:600}
.gt-hero__notice-title a:hover{color:#fff}
.gt-notice{list-style:none}
.gt-notice li{padding:10px 0 10px 18px;border-bottom:1px dashed var(--gt-line);position:relative;display:flex;flex-direction:column;gap:2px}
.gt-notice li:last-child{border-bottom:0}
.gt-notice li::before{content:"";position:absolute;left:0;top:18px;width:8px;height:8px;border-radius:50%;background:var(--gt-yellow)}
.gt-notice li a{color:var(--gt-ink);text-decoration:none;font-weight:600;font-size:14.5px;line-height:1.45}
.gt-notice li a:hover{color:var(--gt-blue-500)}
.gt-notice--hero{padding:4px 16px;flex:1;overflow:auto;max-height:340px}
.gt-notice__empty{color:var(--gt-muted);font-size:14px}
.gt-notice__empty::before{display:none}

/* ---------- 7. Liên kết nhanh ---------- */
.gt-quick{margin-top:-6px;padding:0 0 10px}
.gt-quick__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.gt-quick__item{display:flex;align-items:center;gap:14px;padding:16px 18px;background:#fff;border:1px solid var(--gt-line);border-radius:var(--gt-radius);text-decoration:none;color:var(--gt-ink);box-shadow:var(--gt-shadow-sm);transition:transform .15s,box-shadow .15s}
.gt-quick__item:hover{transform:translateY(-2px);box-shadow:var(--gt-shadow)}
.gt-quick__item strong{display:block;font-size:15px;color:var(--gt-blue)}
.gt-quick__item small{color:var(--gt-muted);font-size:12.5px}
.gt-quick__ico{width:46px;height:46px;border-radius:12px;background:var(--gt-blue-100);color:var(--gt-blue);display:grid;place-items:center;flex:none}
.gt-quick__item--hl{background:var(--gt-blue);border-color:var(--gt-blue)}
.gt-quick__item--hl strong{color:#fff}
.gt-quick__item--hl small{color:#C9D9F0}
.gt-quick__item--hl .gt-quick__ico{background:var(--gt-yellow);color:var(--gt-ink)}

/* ---------- 8. Hệ đào tạo ---------- */
.gt-programs{padding:48px 0 30px}
.gt-programs .gt-sec-head{text-align:center}
.gt-programs__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.gt-program{background:#fff;border:1px solid var(--gt-line);border-radius:var(--gt-radius);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--gt-shadow-sm);transition:transform .15s,box-shadow .15s}
.gt-program:hover{transform:translateY(-3px);box-shadow:var(--gt-shadow)}
.gt-program__img{aspect-ratio:16/9;background:linear-gradient(135deg,var(--gt-blue-100),var(--gt-blue-50));display:grid;place-items:center;overflow:hidden}
.gt-program__img img{width:100%;height:100%;object-fit:cover}
.gt-program__icon{font-size:40px;font-weight:800;color:var(--gt-blue);opacity:.35}
.gt-program h3{font-size:19px;padding:18px 20px 6px;color:var(--gt-blue)}
.gt-program p{padding:0 20px;flex:1;color:var(--gt-text);font-size:14.5px}
.gt-program .gt-link{padding:0 20px 20px}
.gt-program--custom{padding:20px}

/* ---------- 9. Khối intro tuỳ chỉnh ---------- */
.gt-intro{padding:10px 0 30px}
.gt-intro__in{background:var(--gt-blue-50);border-left:5px solid var(--gt-yellow);border-radius:var(--gt-radius);padding:24px 28px}

/* ---------- 10. Bố cục 2 cột + trang ---------- */
.gt-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:32px;align-items:start}
.gt-layout--wide{grid-template-columns:1fr}
.gt-layout__main{min-width:0}
.gt-home-news{padding:20px 0 40px}
.gt-page{padding:22px 0 48px}
.gt-page-head{margin-bottom:22px;padding-bottom:12px;border-bottom:2px solid var(--gt-line);position:relative}
.gt-page-head::after{content:"";position:absolute;left:0;bottom:-2px;width:72px;height:3px;background:var(--gt-yellow)}
.gt-page-title{font-size:28px;color:var(--gt-blue)}
.gt-page-desc{color:var(--gt-muted);margin:6px 0 0}
.gt-subnav{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.gt-subnav a{padding:7px 14px;border-radius:999px;background:var(--gt-bg);color:var(--gt-text);text-decoration:none;font-size:14px;font-weight:500;border:1px solid var(--gt-line)}
.gt-subnav a:hover,.gt-subnav a.is-active{background:var(--gt-blue);color:#fff;border-color:var(--gt-blue)}

/* ---------- 11. Breadcrumb ---------- */
.gt-crumb{background:var(--gt-bg);border-bottom:1px solid var(--gt-line);font-size:13.5px}
.gt-crumb__list{list-style:none;display:flex;flex-wrap:wrap;gap:6px;padding:10px 0;color:var(--gt-muted)}
.gt-crumb__list li+li::before{content:"›";margin-right:6px;color:#A6B0BE}
.gt-crumb__list a{color:var(--gt-blue-500);text-decoration:none}
.gt-crumb__list .is-current{color:var(--gt-text)}

/* ---------- 12. Thẻ bài viết ---------- */
.gt-featured{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;margin-bottom:36px}
.gt-featured__list{display:flex;flex-direction:column;gap:14px}
.gt-hero-post{display:flex;flex-direction:column;background:#fff;border-radius:var(--gt-radius);overflow:hidden;border:1px solid var(--gt-line);box-shadow:var(--gt-shadow-sm)}
.gt-hero-post__img{aspect-ratio:16/9;overflow:hidden;background:var(--gt-blue-50)}
.gt-hero-post__img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.gt-hero-post:hover .gt-hero-post__img img{transform:scale(1.03)}
.gt-hero-post__body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px}
.gt-hero-post__title{font-size:21px;line-height:1.3}
.gt-hero-post__title a,.gt-row-post__title a,.gt-card__title a,.gt-mini-post__title{color:var(--gt-ink);text-decoration:none}
.gt-hero-post__title a:hover,.gt-row-post__title a:hover,.gt-card__title a:hover,.gt-mini-post__title:hover{color:var(--gt-blue-500)}
.gt-hero-post__desc{color:var(--gt-muted);font-size:14.5px;margin:0}
.gt-row-post{display:grid;grid-template-columns:150px minmax(0,1fr);gap:14px;padding-bottom:14px;border-bottom:1px solid var(--gt-line)}
.gt-row-post:last-child{border-bottom:0}
.gt-row-post__img{aspect-ratio:4/3;border-radius:var(--gt-radius-sm);overflow:hidden;background:var(--gt-blue-50)}
.gt-row-post__img img{width:100%;height:100%;object-fit:cover}
.gt-row-post__body{display:flex;flex-direction:column;gap:5px}
.gt-row-post__title{font-size:16px;line-height:1.35}
.gt-row-post__desc{color:var(--gt-muted);font-size:13.5px;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.gt-list{display:flex;flex-direction:column;gap:16px}
.gt-list .gt-row-post{grid-template-columns:220px minmax(0,1fr);padding-bottom:16px}
.gt-list .gt-row-post__title{font-size:18px}
.gt-grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.gt-card{background:#fff;border:1px solid var(--gt-line);border-radius:var(--gt-radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s}
.gt-card:hover{transform:translateY(-2px);box-shadow:var(--gt-shadow)}
.gt-card__img{aspect-ratio:4/3;overflow:hidden;background:var(--gt-blue-50)}
.gt-card__img img{width:100%;height:100%;object-fit:cover}
.gt-card__body{padding:12px 14px 14px;display:flex;flex-direction:column;gap:6px}
.gt-card__title{font-size:15px;line-height:1.4}
.gt-card__desc{color:var(--gt-muted);font-size:13px;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.gt-cat-block{margin-top:34px}
.gt-mini-list{list-style:none;display:flex;flex-direction:column;gap:12px}
.gt-mini-post{display:grid;grid-template-columns:84px minmax(0,1fr);gap:12px;align-items:start}
.gt-mini-post__img{aspect-ratio:4/3;border-radius:6px;overflow:hidden;background:var(--gt-blue-50)}
.gt-mini-post__img img{width:100%;height:100%;object-fit:cover}
.gt-mini-post__title{font-size:14px;font-weight:600;line-height:1.4;display:block}

/* ---------- 13. Sidebar ---------- */
.gt-side{display:flex;flex-direction:column;gap:22px;position:sticky;top:16px}
.gt-side__cta{background:linear-gradient(160deg,var(--gt-blue),var(--gt-blue-500));color:#fff;border-radius:var(--gt-radius);padding:22px 20px;text-align:center}
.gt-side__cta h3{color:#fff;font-size:19px;text-transform:uppercase}
.gt-side__cta p{color:#D5E2F5;font-size:13.5px;margin:6px 0 14px}
.gt-side__hot{display:block;margin-top:12px;color:var(--gt-yellow);font-weight:700;text-decoration:none;font-size:16px}
.gt-box{background:#fff;border:1px solid var(--gt-line);border-radius:var(--gt-radius);padding:16px 18px 18px}
.gt-box__title{font-size:15px;text-transform:uppercase;letter-spacing:.4px;color:var(--gt-blue);padding-bottom:10px;margin-bottom:12px;border-bottom:2px solid var(--gt-line);position:relative}
.gt-box__title::after{content:"";position:absolute;left:0;bottom:-2px;width:46px;height:2px;background:var(--gt-yellow)}
.gt-box__custom{font-size:14px;overflow:hidden}
.gt-box__custom iframe{max-width:100%}
.gt-side__banners{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-flow:row dense;gap:12px}
.gt-side__banner{grid-column:1/-1;display:flex;align-items:center;justify-content:center;border-radius:var(--gt-radius-sm);overflow:hidden;border:1px solid var(--gt-line);background:#fff;transition:border-color .15s,box-shadow .15s}
.gt-side__banner:hover{border-color:var(--gt-blue-100);box-shadow:var(--gt-shadow-sm)}
.gt-side__banner img{width:100%;height:auto}
/* logo (ảnh gần vuông) → ô 2 cột, logo nằm giữa — main.js gắn class is-logo theo tỉ lệ ảnh */
.gt-side__banner.is-logo{grid-column:auto;aspect-ratio:4/3;padding:12px}
.gt-side__banner.is-logo img{width:auto;max-width:100%;max-height:100%;object-fit:contain}

/* ---------- 14. Bài viết chi tiết ---------- */
.gt-post{background:#fff}
.gt-post__head{margin-bottom:18px}
.gt-post__title{font-size:30px;line-height:1.25;margin:10px 0 12px;color:var(--gt-ink)}
.gt-post__meta{display:flex;flex-wrap:wrap;gap:16px;align-items:center;color:var(--gt-muted);font-size:13.5px;padding-bottom:14px;border-bottom:1px solid var(--gt-line)}
.gt-post__share{display:inline-flex;gap:8px;margin-left:auto}
.gt-post__share a{width:30px;height:30px;border-radius:50%;background:var(--gt-blue-50);color:var(--gt-blue);display:grid;place-items:center}
.gt-post__sapo{font-size:17px;font-weight:500;color:var(--gt-ink);background:var(--gt-blue-50);border-left:4px solid var(--gt-yellow);padding:14px 18px;border-radius:0 var(--gt-radius-sm) var(--gt-radius-sm) 0}
.gt-post__cover{margin:0 0 20px;border-radius:var(--gt-radius);overflow:hidden}
.gt-post__sign{margin-top:24px;padding:16px 18px;background:var(--gt-bg);border-radius:var(--gt-radius-sm);font-size:14px}
.gt-post__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.gt-post__tags a{background:var(--gt-bg);border:1px solid var(--gt-line);color:var(--gt-text);padding:5px 12px;border-radius:999px;font-size:13px;text-decoration:none}
.gt-post__tags a:hover{border-color:var(--gt-blue-500);color:var(--gt-blue-500)}
.gt-article{font-size:16.5px;line-height:1.75;color:var(--gt-text);overflow-wrap:anywhere}
.gt-article--cat{margin-bottom:26px}
.gt-article p{margin:0 0 1em}
.gt-article h2{font-size:23px;margin:1.5em 0 .6em;color:var(--gt-blue)}
.gt-article h3{font-size:19px;margin:1.3em 0 .5em}
.gt-article h4{font-size:17px;margin:1.2em 0 .5em}
.gt-article img{margin:14px auto;border-radius:var(--gt-radius-sm)}
.gt-article ul,.gt-article ol{padding-left:1.4em;margin:0 0 1em}
.gt-article li{margin-bottom:.35em}
.gt-article blockquote{margin:1.2em 0;padding:12px 18px;border-left:4px solid var(--gt-yellow);background:var(--gt-blue-50);border-radius:0 var(--gt-radius-sm) var(--gt-radius-sm) 0}
.gt-article table{width:100%;border-collapse:collapse;margin:1em 0;font-size:15px;display:block;overflow-x:auto}
.gt-article th,.gt-article td{border:1px solid var(--gt-line);padding:8px 10px;vertical-align:top}
.gt-article th{background:var(--gt-blue-50);color:var(--gt-blue)}
.gt-article iframe{max-width:100%}
.gt-article a{color:var(--gt-blue-500)}

.gt-oldnews{margin:28px 0 0;padding:18px 20px;background:var(--gt-bg);border:1px solid var(--gt-line);border-radius:var(--gt-radius);display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:8px 28px;font-size:15px;line-height:1.5}
.gt-oldnews__col h3{font-size:14px;text-transform:uppercase;letter-spacing:.4px;color:var(--gt-blue);margin:0 0 10px;padding-bottom:8px;border-bottom:2px solid var(--gt-line);position:relative}
.gt-oldnews__col h3::after{content:"";position:absolute;left:0;bottom:-2px;width:40px;height:2px;background:var(--gt-yellow)}
.gt-oldnews ul{list-style:none;margin:0;padding:0}
.gt-oldnews li{position:relative;padding:6px 0 6px 16px;margin:0;border-bottom:1px dashed var(--gt-line)}
.gt-oldnews li:last-child{border-bottom:0}
.gt-oldnews li::before{content:"";position:absolute;left:0;top:14px;width:6px;height:6px;border-radius:50%;background:var(--gt-yellow)}
.gt-article .gt-oldnews a{color:var(--gt-ink);text-decoration:none;font-weight:500}
.gt-article .gt-oldnews a:hover{color:var(--gt-blue-500)}

/* ---------- 15. Vote sao ---------- */
.gt-vote{display:flex;align-items:center;gap:10px;margin-top:22px;padding:12px 16px;background:var(--gt-bg);border-radius:var(--gt-radius-sm);font-size:14px;flex-wrap:wrap}
.gt-vote[hidden]{display:none}
.gt-vote__stars{display:inline-flex;gap:2px}
.gt-vote__stars button{background:none;border:0;cursor:pointer;font-size:24px;line-height:1;color:#CBD3DE;padding:0 1px;transition:color .1s,transform .1s}
.gt-vote__stars button.is-on,.gt-vote__stars button:hover,.gt-vote__stars button:hover~button{color:var(--gt-yellow)}
.gt-vote__stars:hover button{color:var(--gt-yellow)}
.gt-vote__stars button:hover~button{color:#CBD3DE}
.gt-vote__stars button:active{transform:scale(1.15)}
.gt-vote__info{color:var(--gt-muted)}
.gt-vote.is-done .gt-vote__stars button{cursor:default}

/* ---------- 16. Phân trang lõi ($datapage) ---------- */
.gt-pager{margin-top:26px;display:flex;justify-content:center;flex-wrap:wrap;gap:6px}
.gt-pager .limit{display:none}
.gt-pager a,.gt-pager span{display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:36px;padding:0 10px;border-radius:8px;border:1px solid var(--gt-line);color:var(--gt-text);text-decoration:none;font-size:14px;cursor:pointer;background:#fff}
.gt-pager a:hover{border-color:var(--gt-blue-500);color:var(--gt-blue-500)}
.gt-pager .active,.gt-pager strong,.gt-pager span.current{background:var(--gt-blue);color:#fff;border-color:var(--gt-blue)}
.gt-pager ul{list-style:none;display:flex;flex-wrap:wrap;gap:6px}

/* ---------- 17. Form đăng ký ---------- */
.gt-reg{background:linear-gradient(135deg,var(--gt-blue-700) 0%,var(--gt-blue) 55%,var(--gt-blue-500) 100%);color:#fff;padding:56px 0;position:relative;overflow:hidden}
.gt-reg::before{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(246,180,0,.28),transparent 65%)}
.gt-reg__in{display:grid;grid-template-columns:1fr 1.1fr;gap:40px;align-items:center;position:relative}
.gt-reg__intro h2{color:#fff;font-size:32px;margin:4px 0 14px}
.gt-reg__intro p{color:#D5E2F5;font-size:16px}
.gt-reg__points{list-style:none;display:flex;flex-direction:column;gap:10px;margin-top:18px}
.gt-reg__points li{padding-left:30px;position:relative;font-weight:500}
.gt-reg__points li::before{content:"✓";position:absolute;left:0;top:-1px;width:22px;height:22px;border-radius:50%;background:var(--gt-yellow);color:var(--gt-ink);font-size:13px;font-weight:800;display:grid;place-items:center}
.gt-reg--compact{padding:0;background:none;color:inherit;margin-top:30px}
.gt-reg--compact::before{display:none}
.gt-reg--compact .gt-reg__in{grid-template-columns:1fr;padding:0}
.gt-form{background:#fff;color:var(--gt-text);border-radius:var(--gt-radius);padding:26px 26px 22px;box-shadow:var(--gt-shadow);display:flex;flex-direction:column;gap:14px}
.gt-reg--compact .gt-form{border:1px solid var(--gt-line);box-shadow:none;background:var(--gt-bg)}
.gt-form__row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.gt-form label{display:flex;flex-direction:column;gap:6px;font-size:13.5px;font-weight:600;color:var(--gt-ink)}
.gt-form label b{color:var(--gt-red);font-weight:700}
.gt-form input,.gt-form select,.gt-form textarea{width:100%;border:1px solid #CBD3DE;border-radius:var(--gt-radius-sm);padding:11px 13px;background:#fff;font-weight:400;font-size:15px;outline:0;transition:border-color .15s,box-shadow .15s}
.gt-form input:focus,.gt-form select:focus,.gt-form textarea:focus{border-color:var(--gt-blue-500);box-shadow:0 0 0 3px rgba(22,89,181,.15)}
.gt-form textarea{resize:vertical}
.gt-form .gt-btn{align-self:flex-start}
.gt-form__msg{margin:0;font-size:14px;min-height:1.2em;font-weight:600}
.gt-form__msg.is-error{color:var(--gt-red)}
.gt-form__msg.is-ok{color:#1B7F3B}
.gt-form__note{margin:0;font-size:12.5px;color:var(--gt-muted)}
.gt-form.is-busy{opacity:.7;pointer-events:none}

/* ---------- 18. Đối tác / liên kết ---------- */
.gt-partners{padding:10px 0 40px}
.gt-partners__row{display:flex;flex-wrap:wrap;justify-content:center;gap:22px;align-items:center}
.gt-partners__row img{max-height:64px;width:auto;filter:grayscale(.2);transition:filter .15s}
.gt-partners__row a:hover img{filter:none}

/* ---------- 19. Liên hệ ---------- */
.gt-contact{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.gt-contact__map{margin-top:18px;border-radius:var(--gt-radius);overflow:hidden;border:1px solid var(--gt-line)}
.gt-contact__map iframe{display:block;width:100%;border:0}
.gt-contact__form .gt-reg--compact{margin-top:0}

/* ---------- 20. Trang cảm ơn ---------- */
.gt-thanks{text-align:center;padding:36px 20px 26px}
.gt-thanks__icon{width:72px;height:72px;border-radius:50%;background:#E6F6EC;color:#1B7F3B;font-size:34px;font-weight:800;display:grid;place-items:center;margin:0 auto 16px}
.gt-thanks h2{font-size:26px;color:var(--gt-blue);margin-bottom:8px}
.gt-thanks p{color:var(--gt-muted);max-width:520px;margin:0 auto 18px}

/* ---------- 21. Footer ---------- */
.gt-footer{background:var(--gt-blue-700);color:#C9D7EC;margin-top:0}
.gt-footer__band{height:4px;background:linear-gradient(90deg,var(--gt-yellow) 0 40%,var(--gt-blue-500) 40% 100%)}
.gt-footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;padding:46px 16px 36px}
.gt-footer__title{color:#fff;font-size:15px;text-transform:uppercase;letter-spacing:.5px;margin-bottom:16px;position:relative;padding-bottom:10px}
.gt-footer__title::after{content:"";position:absolute;left:0;bottom:0;width:40px;height:2px;background:var(--gt-yellow)}
.gt-footer__brand{display:flex;gap:14px;align-items:center;margin-bottom:18px}
.gt-footer__brand img{width:64px;height:64px;object-fit:contain;background:#fff;border-radius:12px;padding:4px}
.gt-footer__brand strong{display:block;color:#fff;text-transform:uppercase;font-size:15px;line-height:1.3}
.gt-footer__brand span{font-size:13px;font-style:italic;color:#C9D7EC}
.gt-footer__text{color:#C9D7EC}
.gt-footer__info{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:14px}
.gt-footer__info li{display:flex;gap:10px;align-items:flex-start}
.gt-footer__info svg{flex:none;margin-top:3px;color:var(--gt-yellow)}
.gt-footer__info a{color:#fff;text-decoration:none;font-weight:600}
.gt-footer__info a:hover{color:var(--gt-yellow)}
.gt-footer__info a[href^="tel:"]{color:var(--gt-yellow);font-size:16px;font-weight:700;letter-spacing:.3px}
.gt-footer__info a[href^="tel:"]:hover{color:#fff}
.gt-footer__info--dark{color:var(--gt-text);font-size:15.5px}
.gt-footer__info--dark svg{color:var(--gt-blue-500)}
.gt-footer__info--dark a:hover{color:var(--gt-blue-500)}
.gt-footer__text{font-size:14px}
.gt-footer__custom{margin-top:16px;font-size:14px}
.gt-social{display:flex;gap:10px;margin-top:18px}
.gt-social a{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);color:#fff;display:grid;place-items:center;transition:background .15s,color .15s,border-color .15s}
.gt-social a:hover{border-color:var(--gt-yellow)}
.gt-social a:hover{background:var(--gt-yellow);color:var(--gt-ink)}
.gt-footer .gt-menu{flex-direction:column;gap:2px}
.gt-footer .gt-menu__item>a{height:auto;padding:6px 0 6px 14px;color:#C9D7EC;text-transform:none;font-weight:500;font-size:14.5px;position:relative;white-space:normal}
.gt-footer .gt-menu__item>a::before{content:"›";position:absolute;left:0;color:var(--gt-yellow)}
.gt-footer .gt-menu__item>a:hover{background:none;color:#fff}
.gt-footer .gt-menu__caret,.gt-footer .gt-menu__sub,.gt-footer .gt-menu__toggle{display:none}
.gt-footer .gt-menu__item>a::after{display:none}
.gt-footer__copy{border-top:1px solid rgba(255,255,255,.1);font-size:13px}
.gt-footer__copy-in{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;padding:14px 16px}
.gt-totop{position:fixed;right:18px;bottom:18px;width:42px;height:42px;border-radius:50%;background:var(--gt-blue);color:#fff;display:grid;place-items:center;box-shadow:var(--gt-shadow);opacity:0;visibility:hidden;transform:translateY(10px);transition:all .2s;z-index:90}
.gt-totop.is-show{opacity:1;visibility:visible;transform:none}

/* ---------- 22. Responsive ---------- */
@media (max-width:1100px){
  .gt-menu__item>a{padding:0 10px;font-size:13.5px}
  .gt-grid-4{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:960px){
  .gt-topbar__left{display:none}
  .gt-topbar__right{width:100%;justify-content:space-between}
  .gt-brandbar__cta{display:none}
  .gt-burger{display:flex}
  .gt-nav{display:none;box-shadow:none;background:#fff;border-bottom:1px solid var(--gt-line)}
  .gt-nav.is-open{display:block}
  .gt-menu--main{flex-direction:column;justify-content:flex-start}
  .gt-menu__item{border-bottom:1px solid var(--gt-line)}
  .gt-menu__item>a{color:var(--gt-blue);height:48px;padding:0 44px 0 6px;text-transform:none;font-size:15px}
  .gt-menu__item>a:hover,.gt-menu__item.is-active>a{background:none;color:var(--gt-blue-500)}
  .gt-menu__caret{display:none}
  .gt-menu__item>a::after{display:none}
  .gt-side__banners{grid-template-columns:repeat(4,minmax(0,1fr))}
  .gt-menu__toggle{display:block;position:absolute;right:0;top:0;width:48px;height:48px;background:none;border:0;cursor:pointer}
  .gt-menu__toggle::before{content:"+";font-size:24px;color:var(--gt-blue);line-height:48px}
  .gt-menu__item.is-open>.gt-menu__toggle::before{content:"−"}
  .gt-menu__sub{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border-top:0;border-left:3px solid var(--gt-yellow);margin:0 0 10px 6px;padding:0;display:none;border-radius:0;background:var(--gt-blue-50)}
  .gt-menu__item.is-open>.gt-menu__sub{display:block}
  .gt-menu__sub--lv3{display:block;border-left:0;margin:0 0 0 12px;background:transparent}
  .gt-menu__subitem.has-sub>a::after{display:none}
  .gt-hero__in{grid-template-columns:1fr}
  .gt-hero__text h1{font-size:30px}
  .gt-slider,.gt-slider__track,.gt-slide img,.gt-hero__text{min-height:300px}
  .gt-quick__grid{grid-template-columns:repeat(2,1fr)}
  .gt-programs__grid{grid-template-columns:1fr}
  .gt-layout{grid-template-columns:1fr}
  .gt-side{position:static}
  .gt-featured{grid-template-columns:1fr}
  .gt-reg__in{grid-template-columns:1fr}
  .gt-footer__grid{grid-template-columns:1fr 1fr}
  .gt-contact{grid-template-columns:1fr}
}
@media (max-width:640px){
  body.gt-body{font-size:15px}
  .gt-topbar__right .gt-topbar__item:not(.gt-topbar__item--hot){display:none}
  .gt-search input{width:110px}
  .gt-brand__logo,.gt-brand__mark{width:54px;height:54px}
  .gt-brand__name{font-size:14.5px}
  .gt-brand__sup{display:none}
  .gt-hero{padding:14px 0}
  .gt-slider,.gt-slider__track,.gt-slide img,.gt-hero__text{min-height:240px}
  .gt-hero__text{padding:28px 22px}
  .gt-hero__text h1{font-size:24px}
  .gt-quick__grid{grid-template-columns:1fr}
  .gt-sec-title{font-size:22px}
  .gt-grid-4{grid-template-columns:repeat(2,1fr);gap:12px}
  .gt-row-post,.gt-list .gt-row-post{grid-template-columns:110px minmax(0,1fr)}
  .gt-list .gt-row-post__title{font-size:16px}
  .gt-row-post__desc{display:none}
  .gt-post__title{font-size:24px}
  .gt-page-title{font-size:23px}
  .gt-form{padding:18px 16px}
  .gt-form__row{grid-template-columns:1fr}
  .gt-reg{padding:40px 0}
  .gt-reg__intro h2{font-size:25px}
  .gt-footer__grid{grid-template-columns:1fr;gap:28px;padding:36px 16px 28px}
  .gt-side__banners{grid-template-columns:repeat(2,minmax(0,1fr))}
}