/* Ba Om VIỆT - giao diện mẫu 1393 */
/* Bảng màu chuyên đề + bố cục arch / menu flip / thẻ num */
:root{
  --a:rgb(44,85,102); --a-d:rgb(30,58,69);
  --b:rgb(217,185,138); --b-d:rgb(148,126,94);
  --c:rgb(232,240,238); --c-d:rgb(158,163,162);
  --d:rgb(125,143,154); --d-d:rgb(85,97,105);
  --bg:rgb(246,249,247); --bg2:rgb(167,169,168);
  --ink:rgb(11,21,26); --ink2:rgb(16,31,38);
  --white:#fff; --line:rgb(167,169,168);
  --shadow:0 18px 44px -22px rgba(16,22,30,.46);
  --radius:14px;
  --font-head:'Crimson Pro',Georgia,'Times New Roman',serif;
  --font-body:'Quicksand',system-ui,-apple-system,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
body.bom-body{font-family:var(--font-body);color:var(--ink2);background:var(--bg);font-size:16px;line-height:1.68;-webkit-font-smoothing:antialiased;overflow-x:clip}
.bom-shell{max-width:1240px;margin:0 auto;padding:0 24px}
.bom-skip{position:absolute;left:-9999px;top:0;background:var(--c);color:#fff;padding:10px 18px;z-index:200;border-radius:0 0 12px 0;font-weight:700}
.bom-skip:focus{left:0}
.bom-stripe{display:flex;height:10px}
.bom-stripe i{flex:1}
.bom-stripe i:nth-child(1){background:var(--a)}
.bom-stripe i:nth-child(2){background:var(--b)}
.bom-stripe i:nth-child(3){background:var(--c)}
.bom-stripe i:nth-child(4){background:var(--d)}
.bom-stripe i:nth-child(5){background:var(--a-d)}
.bom-header{position:sticky;top:0;z-index:90;background:rgba(246,249,247,0.94);backdrop-filter:blur(8px);box-shadow:0 8px 22px -18px rgba(16,22,30,.5)}
.bom-header-in{display:flex;align-items:center;gap:28px;padding:12px 24px}
.bom-brand{display:flex;align-items:center;flex-shrink:0}
.bom-brand-img{height:52px;width:auto}
.bom-nav{margin-left:auto}
.bom-nav-list{display:flex;gap:2px;flex-wrap:wrap}
.bom-nav-a{display:block;padding:10px 13px;font-size:13px;font-weight:700;letter-spacing:.02em;color:var(--ink2);border-radius:6px;transition:color .25s,background .25s}
.bom-nav-a:hover{color:#fff;background:var(--b)}
.bom-nav-a.is-active{color:#fff;background:var(--c)}
.bom-burger{display:none;width:46px;height:46px;border:2px solid var(--b);background:transparent;border-radius:10px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.bom-burger span{display:block;width:20px;height:2px;background:var(--b-d);border-radius:2px;transition:transform .3s,opacity .3s}
.bom-burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.bom-burger.is-open span:nth-child(2){opacity:0}
.bom-burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.bom-hairline{position:absolute;left:0;right:0;bottom:-6px;height:6px;background:linear-gradient(90deg,var(--a),var(--c),var(--d));opacity:.85;pointer-events:none}
/* ---- Menu di động ---- */
.bom-scrim{position:fixed;inset:0;background:rgba(11,21,26,0.66);opacity:0;visibility:hidden;transition:opacity .4s,visibility .4s;z-index:97}
.bom-scrim.is-on{opacity:1;visibility:visible}
.bom-menu{position:fixed;z-index:99;overflow:hidden;transition:transform .55s cubic-bezier(.2,.9,.3,1),opacity .45s;will-change:transform;
  background:
   radial-gradient(560px 300px at 88% 4%,rgba(232,240,238,0.24),transparent 66%),
   radial-gradient(520px 280px at 8% 92%,rgba(125,143,154,0.26),transparent 68%),
   linear-gradient(180deg,var(--b-d),var(--ink))}
.bom-menu-deco{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.bom-menu-deco i{position:absolute;top:-8%;width:12px;height:12px;border-radius:50%;background:var(--c);opacity:.5;animation:bom-drift 11s linear infinite}
.bom-menu-deco i:nth-child(1){left:6%;animation-delay:0s}
.bom-menu-deco i:nth-child(2){left:18%;animation-delay:1.6s;background:var(--d)}
.bom-menu-deco i:nth-child(3){left:30%;animation-delay:3.1s}
.bom-menu-deco i:nth-child(4){left:42%;animation-delay:.7s;background:var(--bg2)}
.bom-menu-deco i:nth-child(5){left:54%;animation-delay:4.4s;background:var(--d)}
.bom-menu-deco i:nth-child(6){left:66%;animation-delay:2.2s}
.bom-menu-deco i:nth-child(7){left:78%;animation-delay:5.6s;background:var(--bg2)}
.bom-menu-deco i:nth-child(8){left:90%;animation-delay:1.1s;background:var(--d)}
@keyframes bom-drift{from{transform:translateY(0) rotate(0)}to{transform:translateY(108vh) rotate(320deg)}}
.bom-menu-in{position:relative;display:flex;flex-direction:column;padding:44px 26px 40px;max-height:100%;overflow-y:auto}
.bom-menu-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px}
.bom-menu-title{font-family:var(--font-head);font-weight:700;font-size:28px;letter-spacing:.02em;color:var(--bg)}
.bom-menu-close{width:46px;height:46px;flex-shrink:0;border:2px solid rgba(255,255,255,.55);background:transparent;color:var(--bg);font-size:26px;border-radius:12px;cursor:pointer;line-height:1}
.bom-menu-list{display:flex;flex-direction:column;gap:10px}
.bom-menu-list a{display:flex;align-items:center;gap:14px;padding:12px 18px;border:2px solid rgba(255,255,255,.24);border-radius:12px;color:var(--bg);background:rgba(255,255,255,.06);opacity:0;transform:translateY(-14px);transition:transform .5s cubic-bezier(.2,.9,.3,1),opacity .5s,border-color .25s,background .25s}
.bom-menu.is-open .bom-menu-list a{transform:none;opacity:1}
.bom-menu.is-open .bom-menu-list li:nth-child(1) a{transition-delay:.12s}
.bom-menu.is-open .bom-menu-list li:nth-child(2) a{transition-delay:.18s}
.bom-menu.is-open .bom-menu-list li:nth-child(3) a{transition-delay:.24s}
.bom-menu.is-open .bom-menu-list li:nth-child(4) a{transition-delay:.30s}
.bom-menu.is-open .bom-menu-list li:nth-child(5) a{transition-delay:.36s}
.bom-menu.is-open .bom-menu-list li:nth-child(6) a{transition-delay:.42s}
.bom-menu.is-open .bom-menu-list li:nth-child(7) a{transition-delay:.48s}
.bom-menu.is-open .bom-menu-list li:nth-child(8) a{transition-delay:.54s}
.bom-menu.is-open .bom-menu-list li:nth-child(9) a{transition-delay:.60s}
.bom-menu-list a:hover{border-color:var(--d);background:rgba(125,143,154,0.26)}
.bom-menu-dot{flex-shrink:0;width:14px;height:14px;border-radius:50%;background:var(--c);box-shadow:inset 0 0 0 3px rgba(255,255,255,.5)}
.bom-menu-no{font-weight:800;color:var(--d);font-size:11.5px;letter-spacing:.16em;flex-shrink:0}
.bom-menu-name{font-size:16px;font-weight:700;flex:1}
.bom-menu-note{margin-top:22px;text-align:center;color:rgba(255,255,255,.62);font-size:13px}
.bom-menu-flip{left:0;right:0;top:0;max-height:92vh;border-radius:0 0 26px 26px;transform-origin:top center;transform:perspective(1400px) rotateX(-94deg);opacity:0}
.bom-menu-flip.is-open{transform:perspective(1400px) rotateX(0);opacity:1}

/* ---- Nút / tiêu đề ---- */
.bom-btn{display:inline-flex;align-items:center;gap:10px;padding:13px 26px;border-radius:999px;font-weight:700;font-size:15px;border:2px solid transparent;transition:transform .22s,box-shadow .22s,background .22s,border-color .22s,color .22s}
.bom-btn:hover{transform:translateY(-2px)}
.bom-btn-1{background:var(--c);color:#fff;box-shadow:0 14px 26px -16px rgba(232,240,238,0.24)}
.bom-btn-1:hover{background:var(--c-d)}
.bom-btn-2{border-color:var(--b);color:var(--b-d);background:transparent}
.bom-btn-2:hover{background:var(--b);color:#fff}
.bom-btn-3{border-color:var(--line);color:var(--ink2);background:transparent}
.bom-btn-3:hover{border-color:var(--a);color:var(--a-d)}
.bom-section{padding:78px 0}
.bom-section-alt{background:radial-gradient(680px 360px at 88% 6%,rgba(232,240,238,0.24),transparent 70%),radial-gradient(540px 320px at 6% 94%,rgba(125,143,154,0.26),transparent 70%),linear-gradient(180deg,var(--b-d),var(--ink));color:var(--bg)}
.bom-section-soft{background:var(--bg2)}
.bom-head{margin-bottom:44px}
.bom-head-center{text-align:center}
.bom-head-split{display:flex;align-items:flex-end;justify-content:space-between;gap:26px;flex-wrap:wrap}
.bom-kicker{color:var(--c-d);font-weight:800;letter-spacing:.2em;text-transform:uppercase;font-size:12px;margin-bottom:10px}
.bom-kicker-light{color:var(--d)}
.bom-h2{font-family:var(--font-head);font-weight:700;font-size:clamp(28px,3.4vw,42px);line-height:1.14;color:var(--ink2)}
.bom-h2-light{color:var(--bg)}
.bom-head-desc{color:rgba(30,36,44,.66);max-width:62ch;margin-top:12px}
.bom-head-center .bom-head-desc{margin-left:auto;margin-right:auto}
.bom-head-desc-light{color:rgba(255,255,255,.82)}
.bom-grid{display:grid;gap:22px}
.bom-grid-4{grid-template-columns:repeat(4,1fr)}
.bom-chip{display:inline-flex;align-items:center;width:max-content;background:var(--b);color:#fff;font-size:11.5px;font-weight:800;padding:5px 13px;border-radius:999px;letter-spacing:.08em;text-transform:uppercase}
.bom-more{font-weight:800;color:var(--c-d);font-size:13.5px}
.bom-block-h{font-family:var(--font-head);font-weight:700;font-size:28px;color:var(--ink2);margin-bottom:20px}
/* ---- Hero ---- */
.bom-hero{position:relative;overflow:hidden}
.bom-hero-kicker{display:flex;align-items:center;gap:10px;color:var(--c-d);font-weight:800;letter-spacing:.18em;text-transform:uppercase;font-size:12.5px;margin-bottom:14px}
.bom-hero-title{font-family:var(--font-head);font-weight:700;font-size:clamp(34px,4.6vw,56px);line-height:1.1;margin-bottom:18px;color:var(--ink2)}
.bom-hero-desc{color:rgba(30,36,44,.7);font-size:16.5px;max-width:54ch;margin-bottom:28px}
.bom-hero-acts{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.bom-hero-stats{display:flex;gap:30px;flex-wrap:wrap}
.bom-hero-stats li{display:flex;flex-direction:column;gap:2px;border-left:4px solid var(--c);padding-left:14px}
.bom-hero-stats li:nth-child(2){border-left-color:var(--b)}
.bom-hero-stats li:nth-child(3){border-left-color:var(--d)}
.bom-hero-stats strong{font-family:var(--font-head);font-weight:700;font-size:30px;color:var(--ink2);line-height:1.1}
.bom-hero-stats span{font-size:12.5px;color:rgba(30,36,44,.66)}
.bom-hero-art{position:relative;min-width:0}
.bom-hero-in{display:grid;grid-template-columns:1.04fr .96fr;gap:54px;align-items:center;position:relative;z-index:2}
.bom-hero-cut{position:absolute;left:0;right:0;bottom:-1px;height:48px;z-index:1}
.bom-hero-cut i{position:absolute;left:0;right:0;bottom:0}
.bom-hero-cut i:nth-child(1){height:34px;background:rgba(217,185,138,0.26);clip-path:polygon(0 100%,0 40%,12% 62%,26% 30%,42% 66%,58% 34%,74% 64%,88% 36%,100% 58%,100% 100%)}
.bom-hero-cut i:nth-child(2){height:20px;background:var(--bg);clip-path:polygon(0 100%,0 46%,14% 68%,30% 40%,48% 72%,64% 44%,82% 70%,100% 46%,100% 100%)}
.bom-hero-arch{background:radial-gradient(700px 400px at 88% 6%,rgba(232,240,238,0.24),transparent 66%),radial-gradient(560px 360px at 6% 90%,rgba(217,185,138,0.26),transparent 70%),linear-gradient(180deg,var(--bg),var(--bg2));padding:72px 0 108px}
.bom-art-arch{position:relative;width:min(100%,470px);margin:0 auto}
.bom-arch-frame{display:block;border-radius:240px 240px 22px 22px;overflow:hidden;border:8px solid var(--white);box-shadow:var(--shadow)}
.bom-arch-frame img{width:100%;aspect-ratio:41/49;object-fit:cover;object-position:72% 46%}
.bom-arch-ribbon{position:absolute;left:50%;bottom:-14px;transform:translateX(-50%);background:var(--b-d);color:var(--bg);font-size:12.5px;font-weight:700;padding:9px 20px;border-radius:999px;border:2px solid var(--white);white-space:nowrap}
.bom-arch-dots{position:absolute;right:-8px;top:18%;display:flex;flex-direction:column;gap:9px}
.bom-arch-dots i{width:14px;height:14px;border-radius:50%;background:var(--d);box-shadow:0 0 0 4px rgba(246,249,247,0.94)}
.bom-arch-dots i:nth-child(2n){background:var(--c)}
.bom-arch-dots i:nth-child(3n){background:var(--b)}

/* ---- Lưới chuyên mục 4x2 ---- */
.bom-cats{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.bom-bed{position:relative;display:flex;flex-direction:column;background:#fff;border:2px solid var(--line);border-radius:var(--radius);overflow:hidden;height:100%;transition:transform .28s,box-shadow .28s,border-color .28s}
.bom-bed:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.bom-bed-media{display:block;position:relative;overflow:hidden}
.bom-bed-media img{width:100%;aspect-ratio:9/6;object-fit:cover;transition:transform .5s}
.bom-bed:hover .bom-bed-media img{transform:scale(1.06)}
.bom-bed-body{display:flex;flex-direction:column;gap:8px;padding:16px 16px 18px;flex:1}
.bom-bed-no{display:inline-block;width:max-content;font-weight:800;font-size:11px;letter-spacing:.16em;color:#fff;padding:3px 10px;border-radius:999px}
.bom-bed-name{font-family:var(--font-head);font-weight:700;font-size:21px;color:var(--ink2);line-height:1.2}
.bom-bed-desc{font-size:13.5px;color:rgba(30,36,44,.66);flex:1}
.bom-bed-go{font-size:13px;font-weight:800;color:var(--c-d)}
.bom-cats-band li:nth-child(4n+1) .bom-bed{--sea:var(--a)}
.bom-cats-band li:nth-child(4n+2) .bom-bed{--sea:var(--b)}
.bom-cats-band li:nth-child(4n+3) .bom-bed{--sea:var(--c)}
.bom-cats-band li:nth-child(4n) .bom-bed{--sea:var(--d)}
.bom-cats-band .bom-bed::before{content:"";position:absolute;left:0;right:0;top:0;height:6px;background:var(--sea);z-index:3}
.bom-cats-band .bom-bed-no{background:var(--sea)}
.bom-cats-band .bom-bed:hover{border-color:var(--sea)}
.bom-cats-num li:nth-child(4n+1) .bom-bed{--sea:var(--a)}
.bom-cats-num li:nth-child(4n+2) .bom-bed{--sea:var(--b)}
.bom-cats-num li:nth-child(4n+3) .bom-bed{--sea:var(--c)}
.bom-cats-num li:nth-child(4n) .bom-bed{--sea:var(--d)}
.bom-cats-num .bom-bed{background:linear-gradient(180deg,@CC_A@@,transparent 40%),#fff}
.bom-cats-num .bom-bed-no{position:absolute;right:14px;top:14px;z-index:3;background:var(--sea);box-shadow:0 6px 14px -8px rgba(0,0,0,.6)}
.bom-cats-num .bom-bed-media{border-bottom:4px solid var(--sea)}
.bom-cats-num .bom-bed-go{color:var(--sea)}
.bom-cats-num .bom-bed:hover{background:linear-gradient(180deg,rgba(232,240,238,0.24),transparent),#fff;border-color:var(--sea)}
.bom-cats-overlay li:nth-child(4n+1) .bom-bed{--sea:var(--a)}
.bom-cats-overlay li:nth-child(4n+2) .bom-bed{--sea:var(--b)}
.bom-cats-overlay li:nth-child(4n+3) .bom-bed{--sea:var(--c)}
.bom-cats-overlay li:nth-child(4n) .bom-bed{--sea:var(--d)}
.bom-cats-overlay .bom-bed-body{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(0deg,rgba(11,21,26,0.66),transparent);color:#fff}
.bom-cats-overlay .bom-bed{background:var(--ink)}
.bom-cats-overlay .bom-bed-name{color:#fff}
.bom-cats-overlay .bom-bed-desc{color:rgba(255,255,255,.82)}
.bom-cats-overlay .bom-bed-go{color:var(--d)}
.bom-cats-overlay .bom-bed-no{background:var(--sea)}
.bom-cats-overlay .bom-bed-media img{aspect-ratio:9/10.5}
/* ---- Tiêu điểm 1 + 3 ---- */
.bom-spot{display:grid;grid-template-columns:1.12fr .88fr;gap:24px;align-items:start}
.bom-feature{background:var(--bg);color:var(--ink2);border:2px solid var(--d);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.bom-feature-link{display:flex;flex-direction:column;height:100%}
.bom-feature-media{display:block;overflow:hidden}
.bom-feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.bom-feature-body{display:flex;flex-direction:column;gap:12px;padding:26px 28px}
.bom-feature-title{font-family:var(--font-head);font-weight:700;font-size:27px;line-height:1.2;color:var(--ink2)}
.bom-feature-desc{color:rgba(30,36,44,.7);font-size:14.5px}
.bom-feature-meta{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:rgba(30,36,44,.66);margin-top:auto}
.bom-stack{display:flex;flex-direction:column;gap:16px}
.bom-row{background:var(--bg);color:var(--ink2);border:2px solid rgba(255,255,255,.34);border-radius:var(--radius);overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s}
.bom-row:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--d)}
.bom-row-link{display:grid;grid-template-columns:132px 1fr;align-items:stretch}
.bom-row-media{position:relative;overflow:hidden;display:block}
.bom-row-media img{width:100%;height:100%;object-fit:cover}
.bom-row-no{position:absolute;left:9px;top:9px;min-width:32px;height:26px;padding:0 8px;display:inline-flex;align-items:center;justify-content:center;background:var(--c);color:#fff;font-weight:800;font-size:12.5px;font-style:normal;border-radius:999px}
.bom-row-body{display:flex;flex-direction:column;gap:7px;padding:14px 16px;justify-content:center}
.bom-row-cat{font-size:11.5px;font-weight:800;color:var(--b-d);letter-spacing:.09em;text-transform:uppercase}
.bom-row-title{font-weight:700;font-size:15.5px;line-height:1.4;color:var(--ink2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.bom-row-meta{font-size:12.5px;color:rgba(30,36,44,.6)}

/* ---- Thẻ bài viết ---- */
.bom-card{position:relative;background:#fff;border:2px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .28s,box-shadow .28s}
.bom-card::after{content:"";position:absolute;left:0;right:0;bottom:0;height:5px;background:linear-gradient(90deg,var(--c),var(--b));opacity:0;transition:opacity .28s}
.bom-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.bom-card:hover::after{opacity:1}
.bom-card-link{display:flex;flex-direction:column;height:100%}
.bom-card-media{position:relative;overflow:hidden;display:block}
.bom-card-media img{width:100%;aspect-ratio:8/5.6;object-fit:cover;transition:transform .5s}
.bom-card:hover .bom-card-media img{transform:scale(1.06)}
.bom-card-date{position:absolute;left:12px;bottom:12px;min-width:54px;height:32px;padding:0 11px;border-radius:999px;background:var(--c);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-weight:800;font-size:12px;border:2px solid #fff}
.bom-card-body{display:flex;flex-direction:column;gap:9px;padding:17px;flex:1}
.bom-card-cat{font-size:11.5px;font-weight:800;color:var(--b-d);letter-spacing:.09em;text-transform:uppercase}
.bom-card-title{font-weight:700;font-size:16px;line-height:1.44;color:var(--ink2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.bom-card-foot{display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:rgba(30,36,44,.6)}

/* ---- FAQ ---- */
.bom-faq-shell{max-width:880px}
.bom-faq{display:flex;flex-direction:column;gap:13px}
.bom-faq-item{background:#fff;border:2px solid var(--line);border-radius:var(--radius);overflow:hidden}
.bom-faq-item:nth-child(2n){border-color:rgba(217,185,138,0.26)}
.bom-faq-item[open]{box-shadow:var(--shadow);border-color:var(--c)}
.bom-faq-item summary{display:flex;align-items:center;gap:15px;padding:16px 22px;cursor:pointer;list-style:none}
.bom-faq-item summary::-webkit-details-marker{display:none}
.bom-faq-no{flex-shrink:0;font-weight:800;font-size:11px;letter-spacing:.14em;color:#fff;background:var(--b);padding:4px 10px;border-radius:999px}
.bom-faq-q{font-weight:700;font-size:16px;line-height:1.4;color:var(--ink2);flex:1}
.bom-faq-ico{position:relative;width:22px;height:22px;flex-shrink:0}
.bom-faq-ico::before,.bom-faq-ico::after{content:"";position:absolute;background:var(--c-d);border-radius:2px;transition:transform .3s}
.bom-faq-ico::before{left:0;top:10px;width:22px;height:2px}
.bom-faq-ico::after{left:10px;top:0;width:2px;height:22px}
.bom-faq-item[open] .bom-faq-ico::after{transform:rotate(90deg)}
.bom-faq-a{padding:0 22px 19px 62px;color:rgba(30,36,44,.7);font-size:14.5px}

/* ---- Giới thiệu ---- */
.bom-about{background:radial-gradient(620px 340px at 12% 12%,rgba(232,240,238,0.24),transparent 70%),radial-gradient(540px 320px at 92% 90%,rgba(44,85,102,0.22),transparent 70%),linear-gradient(180deg,var(--ink),var(--b-d));color:var(--bg);padding:80px 0}
.bom-about-wrap{display:grid;grid-template-columns:.98fr 1.02fr;gap:50px;align-items:center}
.bom-about-left .bom-about-copy{order:2}
.bom-about-left .bom-about-media{order:1}
.bom-about-right .bom-about-copy{order:1}
.bom-about-right .bom-about-media{order:2}
.bom-about-media{position:relative;padding-bottom:16px}
.bom-about-frame{display:block;border:5px solid var(--bg);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.bom-about-frame img{width:100%;aspect-ratio:12/8.5;object-fit:cover}
.bom-about-stamp{position:absolute;right:12px;top:-14px;background:var(--d);color:#20180a;font-family:var(--font-head);font-weight:700;font-size:14px;letter-spacing:.12em;padding:7px 16px;border:2px solid var(--bg);border-radius:999px;transform:rotate(3deg)}
.bom-about-cap{position:absolute;left:18px;bottom:0;background:var(--ink);color:var(--bg);font-size:13px;font-weight:700;padding:8px 16px;border-radius:999px;border:2px solid var(--d)}
.bom-about-title{font-family:var(--font-head);font-weight:700;font-size:clamp(28px,3.4vw,42px);line-height:1.14;margin-bottom:16px;color:var(--bg)}
.bom-about-desc{color:rgba(255,255,255,.84);margin-bottom:26px;max-width:56ch}
.bom-about-stats{display:flex;gap:30px;margin-bottom:30px;flex-wrap:wrap}
.bom-about-stats li{display:flex;flex-direction:column;gap:2px;border-left:4px solid var(--c);padding-left:14px}
.bom-about-stats li:nth-child(2){border-left-color:var(--b)}
.bom-about-stats li:nth-child(3){border-left-color:var(--d)}
.bom-about-stats strong{font-family:var(--font-head);font-weight:700;font-size:28px;color:#fff;line-height:1.1}
.bom-about-stats span{font-size:12.5px;color:rgba(255,255,255,.7)}
/* ---- Băng rôn trong ---- */
.bom-ibanner{position:relative;background:radial-gradient(600px 240px at 88% 0%,rgba(232,240,238,0.24),transparent 70%),linear-gradient(180deg,var(--b-d),var(--ink));color:var(--bg);padding:50px 0 58px;overflow:hidden}
.bom-ibanner-deco{position:absolute;inset:0;pointer-events:none}
.bom-ibanner-deco i{position:absolute;top:-10%;width:12px;height:12px;border-radius:50%;background:var(--c);opacity:.42;animation:bom-drift 12s linear infinite}
.bom-ibanner-deco i:nth-child(1){left:9%;animation-delay:0s}
.bom-ibanner-deco i:nth-child(2){left:24%;animation-delay:2s;background:var(--d)}
.bom-ibanner-deco i:nth-child(3){left:39%;animation-delay:4s}
.bom-ibanner-deco i:nth-child(4){left:53%;animation-delay:1s;background:var(--bg2)}
.bom-ibanner-deco i:nth-child(5){left:66%;animation-delay:3s;background:var(--d)}
.bom-ibanner-deco i:nth-child(6){left:78%;animation-delay:5s}
.bom-ibanner-deco i:nth-child(7){left:89%;animation-delay:1.5s;background:var(--bg2)}
.bom-ibanner-deco i:nth-child(8){left:96%;animation-delay:3.5s}
.bom-ibanner-in{position:relative}
.bom-ibanner-kicker{font-weight:800;letter-spacing:.22em;text-transform:uppercase;font-size:12px;color:var(--d);margin-bottom:8px}
.bom-ibanner-title{font-family:var(--font-head);font-weight:700;font-size:clamp(30px,3.8vw,48px);line-height:1.12;margin-bottom:10px;color:var(--bg)}
.bom-ibanner-desc{color:rgba(255,255,255,.84);max-width:64ch;font-size:15px}

/* ---- Đường dẫn ---- */
.bom-crumb{padding:18px 0 0}
.bom-crumb-line{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13.5px;color:rgba(30,36,44,.66)}
.bom-crumb-line a{color:var(--b-d);font-weight:700}
.bom-crumb-line a:hover{text-decoration:underline}
.bom-crumb-sep{color:var(--c)}
.bom-crumb-now{font-weight:800;color:var(--ink2)}

/* ---- Trang trong ---- */
.bom-page{padding-top:52px}
.bom-page-head{margin-bottom:38px}
.bom-page-h1{font-family:var(--font-head);font-weight:700;font-size:clamp(30px,3.6vw,46px);line-height:1.12;color:var(--ink2);margin-bottom:14px}
.bom-page-desc{color:rgba(30,36,44,.7);max-width:70ch;margin-bottom:22px}
.bom-page-acts{display:flex;gap:14px;flex-wrap:wrap}
.bom-other{margin-top:54px}
.bom-other-list{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}
.bom-other-list a{display:flex;align-items:center;gap:15px;background:#fff;border:2px solid var(--line);border-radius:var(--radius);padding:15px 17px;transition:transform .25s,box-shadow .25s,border-color .25s}
.bom-other-list a:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--c)}
.bom-other-no{flex-shrink:0;font-weight:800;font-size:11px;letter-spacing:.12em;color:#fff;background:var(--b);padding:4px 9px;border-radius:999px}
.bom-other-body{display:flex;flex-direction:column;gap:4px;flex:1}
.bom-other-body strong{font-weight:700;font-size:16px;color:var(--ink2)}
.bom-other-body span{font-size:13px;color:rgba(30,36,44,.64)}
.bom-other-go{color:var(--c-d);font-size:20px;font-weight:800}

/* ---- Danh sách ---- */
.bom-list-wrap{display:grid;grid-template-columns:1fr 330px;gap:42px;align-items:start}
.bom-list-wrap-side-left{grid-template-columns:330px 1fr}
.bom-list-wrap-side-left .bom-side{order:-1}
.bom-rows{display:flex;flex-direction:column;gap:17px}
.bom-lrow{background:#fff;border:2px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s}
.bom-lrow:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--b)}
.bom-lrow-link{display:grid;grid-template-columns:228px 1fr 74px}
.bom-lrow-media img{width:100%;height:100%;object-fit:cover}
.bom-lrow-body{display:flex;flex-direction:column;gap:8px;padding:17px 19px}
.bom-lrow-meta i{font-style:normal;font-size:11.5px;font-weight:800;color:var(--b-d);letter-spacing:.09em;text-transform:uppercase}
.bom-lrow-title{font-family:var(--font-head);font-weight:700;font-size:21px;line-height:1.24;color:var(--ink2)}
.bom-lrow-desc{font-size:13.5px;color:rgba(30,36,44,.68)}
.bom-lrow-date{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;background:var(--b-d);color:var(--bg);padding:10px}
.bom-lrow-date b{font-family:var(--font-head);font-weight:700;font-size:28px;line-height:1;color:var(--d)}
.bom-lrow-date i{font-style:normal;font-size:11px;letter-spacing:.05em;color:var(--bg)}
.bom-pagi{display:flex;gap:8px;margin-top:28px;flex-wrap:wrap}
.bom-pagi a{min-width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border:2px solid var(--line);background:#fff;color:var(--ink2);border-radius:999px;font-weight:800;font-size:14px;cursor:pointer;padding:0 12px}
.bom-pagi .is-cur{background:var(--c);border-color:var(--c);color:#fff}
.bom-pagi .is-dis{opacity:.45;pointer-events:none}
.bom-pagi a:hover:not(.is-cur){border-color:var(--c);color:var(--c-d)}

/* ---- Cột bên ---- */
.bom-side{display:flex;flex-direction:column;gap:24px;position:sticky;top:96px}
.bom-side-box{background:#fff;border:2px solid var(--line);border-radius:var(--radius);padding:20px}
.bom-side-h{font-family:var(--font-head);font-weight:700;font-size:21px;color:var(--ink2);margin-bottom:15px;padding-bottom:10px;border-bottom:3px solid var(--c)}
.bom-side-hot{display:flex;flex-direction:column;gap:13px}
.bom-side-hot a{display:grid;grid-template-columns:76px 1fr;gap:12px;align-items:center}
.bom-side-hot img{width:76px;height:58px;object-fit:cover;border-radius:8px;border:2px solid var(--b)}
.bom-side-hot-body{display:flex;flex-direction:column;gap:3px}
.bom-side-hot-body strong{font-size:13.5px;font-weight:700;line-height:1.4;color:var(--ink2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.bom-side-hot-body time{font-size:11.5px;color:rgba(30,36,44,.6)}
.bom-side-more{display:inline-flex;gap:6px;margin-top:15px;font-size:13.5px;font-weight:800;color:var(--c-d)}
.bom-side-list{display:flex;flex-direction:column;gap:11px}
.bom-side-list a{display:flex;gap:12px;align-items:baseline;font-size:13.5px;color:var(--ink2)}
.bom-side-list a:hover{color:var(--c-d)}
.bom-dot{width:24px;height:24px;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;background:var(--bg2);border:2px solid var(--b);border-radius:999px;font-size:11px;font-weight:800;transform:translateY(4px)}
.bom-side-note{background:var(--b-d);border-color:var(--b-d)}
.bom-side-note .bom-side-h{color:var(--bg);border-color:var(--d)}
.bom-side-note p{color:rgba(255,255,255,.84);font-size:13.5px;margin-bottom:15px}

/* ---- Bài viết ---- */
.bom-article-wrap{display:grid;grid-template-columns:1fr 330px;gap:42px;align-items:start}
.bom-article-h1{font-family:var(--font-head);font-weight:700;font-size:clamp(28px,3.4vw,44px);line-height:1.14;color:var(--ink2);margin-bottom:18px}
.bom-article-meta{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:13px;color:rgba(30,36,44,.66);margin-bottom:22px}
.bom-meta-item b{color:var(--b-d)}
.bom-article-figure{margin-bottom:24px;border-radius:var(--radius);overflow:hidden;border:2px solid var(--line)}
.bom-article-figure img{width:100%;height:auto}
.bom-article-body{font-size:16px;color:var(--ink2)}
.bom-article-body p{margin-bottom:18px}
.bom-article-body h2{font-family:var(--font-head);font-weight:700;font-size:28px;color:var(--ink2);margin:32px 0 14px;padding-left:14px;border-left:5px solid var(--c)}
.bom-article-body h3{font-weight:700;font-size:19px;color:var(--ink2);margin:24px 0 12px}
.bom-article-body ul,.bom-article-body ol{margin:0 0 18px 22px;list-style:disc}
.bom-article-body ol{list-style:decimal}
.bom-article-body li{margin-bottom:8px}
.bom-article-body img{border-radius:10px;margin:20px 0}
.bom-article-body blockquote{border-left:5px solid var(--b);background:var(--bg2);padding:16px 20px;border-radius:0 12px 12px 0;margin:0 0 18px;color:rgba(30,36,44,.72);font-style:italic}
.bom-article-tags{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:28px;padding-top:22px;border-top:2px solid var(--line)}
.bom-tag-label{font-size:13px;color:rgba(30,36,44,.66)}
.bom-tag{background:var(--bg2);border:2px solid var(--line);color:var(--ink2);font-size:12.5px;font-weight:700;padding:6px 14px;border-radius:999px;transition:all .25s}
.bom-tag:hover{background:var(--c);border-color:var(--c);color:#fff}
.bom-switcher{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin:32px 0 42px}
.bom-switcher-cell{background:#fff;border:2px solid var(--line);border-radius:var(--radius);padding:15px 17px;display:flex;flex-direction:column;gap:6px}
.bom-switcher-next{text-align:right}
.bom-switcher-label{font-size:11.5px;font-weight:800;color:var(--c-d);letter-spacing:.12em;text-transform:uppercase}
.bom-switcher-link{font-weight:700;font-size:15px;color:var(--ink2)}
.bom-switcher-link:hover{color:var(--c-d)}
.bom-switcher-empty{font-size:13.5px;color:rgba(30,36,44,.6)}
.bom-related{margin-top:8px}
/* ---- Liên kết website ---- */
.bom-flink{background:var(--bg2);padding:52px 0}
.bom-flink-head{text-align:center;margin-bottom:28px}
.bom-flink-title{font-family:var(--font-head);font-weight:700;font-size:28px;color:var(--ink2);margin-bottom:8px}
.bom-flink-note{color:rgba(30,36,44,.66);font-size:14px}
.bom-flink-row{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}
.bom-flink-chip{display:flex;align-items:center;gap:12px;background:#fff;border:2px solid var(--line);border-radius:999px;padding:8px 20px 8px 8px;font-weight:700;font-size:14px;color:var(--ink2);transition:transform .25s,box-shadow .25s,border-color .25s}
.bom-flink-chip:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--c)}
.bom-flink-logo{width:42px;height:42px;border-radius:999px;object-fit:cover;border:2px solid var(--b)}

/* ---- Chân trang ---- */
.bom-footer{background:var(--ink);color:var(--bg);padding-bottom:34px}
.bom-foot-deco{display:flex;height:16px;margin-bottom:24px}
.bom-foot-deco i{flex:1;background:var(--b-d)}
.bom-foot-deco i:nth-child(2n){background:var(--c);opacity:.85}
.bom-foot-deco i:nth-child(3n){background:var(--d);opacity:.8}
.bom-foot-top{display:flex;align-items:center;gap:28px;flex-wrap:wrap;margin-bottom:40px}
.bom-fbrand{display:flex;align-items:center;background:#fff;border-radius:999px;padding:6px 14px}
.bom-fbrand-img{height:52px;width:auto}
.bom-foot-slogan{color:rgba(255,255,255,.7);font-size:14px;max-width:52ch}
.bom-foot-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:38px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.18);margin-bottom:24px}
.bom-foot-h{font-family:var(--font-head);font-weight:700;font-size:20px;color:var(--bg);margin-bottom:15px}
.bom-foot-list{display:flex;flex-direction:column;gap:10px}
.bom-foot-cats{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.bom-foot-list a{color:rgba(255,255,255,.82);font-size:14px;transition:color .25s,padding-left .25s}
.bom-foot-list a:hover{color:var(--d);padding-left:4px}
.bom-foot-info{display:flex;flex-direction:column;gap:12px}
.bom-foot-info li{display:flex;flex-direction:column;gap:2px}
.bom-foot-key{font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--d);font-weight:800}
.bom-foot-val{font-size:14px;color:var(--bg)}
.bom-foot-copy{font-size:13px;color:rgba(255,255,255,.56);margin-bottom:14px}
.bom-foot-base{margin-top:4px}
.bom-foot-meta{display:flex;gap:12px;flex-wrap:wrap;align-items:center;font-size:12.5px;color:rgba(255,255,255,.56)}
.bom-foot-sitemap{color:var(--d)}
.bom-foot-sitemap:hover{text-decoration:underline}
.bom-top-btn{position:fixed;right:22px;bottom:22px;width:48px;height:48px;border-radius:999px;background:var(--b);color:#fff;border:3px solid var(--bg);font-size:20px;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(10px);transition:all .3s;z-index:80}
.bom-top-btn.is-on{opacity:1;visibility:visible;transform:none}
.bom-top-btn:hover{background:var(--b-d)}

/* ---- 404 ---- */
.bom-404{padding:100px 0;background:radial-gradient(680px 340px at 50% 0%,rgba(232,240,238,0.24),transparent 70%),var(--ink);color:var(--bg)}
.bom-404-board{position:relative;max-width:660px;margin:0 auto;text-align:center;padding:0 24px}
.bom-404-deco{position:absolute;left:0;right:0;top:-46px;height:44px;display:flex;justify-content:space-between;pointer-events:none}
.bom-404-deco i{display:block;width:26px;height:18px;border-radius:50% 50% 0 0/100% 100% 0 0;background:var(--b);animation:bom-sway 4s ease-in-out infinite alternate}
.bom-404-deco i:nth-child(2n){background:var(--c);animation-delay:.6s}
.bom-404-deco i:nth-child(3n){background:var(--d);animation-delay:1.2s}
@keyframes bom-sway{from{transform:translateY(-5px)}to{transform:translateY(5px)}}
.bom-404-code{display:block;font-family:var(--font-head);font-weight:700;font-size:132px;line-height:1;letter-spacing:.02em;color:transparent;-webkit-text-stroke:2px var(--c);margin-bottom:12px}
.bom-404-kicker{color:var(--d);font-weight:800;letter-spacing:.2em;text-transform:uppercase;font-size:12.5px;margin-bottom:12px}
.bom-404-title{font-family:var(--font-head);font-weight:700;font-size:36px;line-height:1.14;margin-bottom:14px;color:var(--bg)}
.bom-404-desc{color:rgba(255,255,255,.84);margin-bottom:28px}
.bom-404-acts{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---- Khung phụ ---- */
.bom-hero-copy,.bom-about-copy,.bom-foot-col,.bom-list-main,.bom-show-main,.bom-feature-body,.bom-row-body{min-width:0}
html.bom-js .bom-reveal{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
html.bom-js .bom-reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .bom-ring,.bom-ring2,.bom-menu-deco i,.bom-ibanner-deco i,.bom-404-deco i,.bom-frame-orbit i{animation:none}
}

/* ---- Đáp ứng ---- */
@media(max-width:1100px){
  .bom-cats,.bom-grid-4{grid-template-columns:repeat(2,1fr)}
  .bom-nav{display:none}
  .bom-burger{display:flex}
  .bom-hero-in{grid-template-columns:1fr;gap:44px}
  .bom-spot{grid-template-columns:1fr;gap:22px}
  .bom-hero-wide .bom-hero-bg{object-position:70% 50%}
}
@media(max-width:900px){
  .bom-list-wrap,.bom-article-wrap{grid-template-columns:1fr}
  .bom-side{position:static}
  .bom-about-wrap{grid-template-columns:1fr;gap:42px}
  .bom-about-left .bom-about-copy{order:1}
  .bom-about-left .bom-about-media{order:2}
  .bom-foot-grid{grid-template-columns:1fr;gap:28px}
  .bom-other-list{grid-template-columns:1fr}
  .bom-hero-copy-center{text-align:left}
  .bom-hero-copy-center .bom-hero-kicker{justify-content:flex-start}
  .bom-hero-copy-center .bom-hero-acts{justify-content:flex-start}
  .bom-hero-copy-center .bom-hero-stats{justify-content:flex-start}
  .bom-hero-copy-center .bom-hero-desc{margin-left:0;margin-right:0}
}
@media(max-width:640px){
  .bom-section{padding:58px 0}
  .bom-cats,.bom-grid-4{grid-template-columns:1fr}
  .bom-lrow-link{grid-template-columns:120px 1fr}
  .bom-lrow-date{display:none}
  .bom-switcher{grid-template-columns:1fr}
  .bom-switcher-next{text-align:left}
  .bom-faq-a{padding-left:22px}
  .bom-head-split{align-items:flex-start;flex-direction:column}
  .bom-foot-cats{grid-template-columns:1fr 1fr}
  .bom-404-code{font-size:92px}
  .bom-hero-wide{min-height:460px}
  .bom-hero-card{padding:24px 22px}
  .bom-hero-wide-cap{padding:16px 18px}
}