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@media(max-width:760px){.container{width:min(100% - 22px,1180px)}.topbar{display:none}.brand-row{min-height:78px}.brand img,.logo-mark{width:52px;height:52px}.logo-mark{font-size:19px;border-radius:13px}.brand strong{font-size:15px}.brand small{font-size:11px}.header-search{display:none}.menu-toggle{display:block}.main-nav{display:none}.main-nav.open{display:block}.main-nav ul{display:block}.main-nav>div>ul>li{border-bottom:1px solid #ffffff16}.main-nav a{min-height:45px;padding:0 12px}.submenu{position:static!important;display:none!important;box-shadow:none;border-radius:0;background:#07447f;color:#fff;padding-left:14px!important}.has-submenu.open>.submenu{display:block!important}.submenu a:hover{background:#ffffff13;color:#fff}.hero-shell{padding-top:10px}.hero-slider{height:420px;border-radius:17px}.hero-content{padding:68px 30px 50px}.hero-content h1{font-size:31px}.hero-content p{font-size:16px}.slider-arrow{display:none}.quick-links{margin-top:-22px}.quick-grid{grid-template-columns:1fr 1fr;gap:9px}.quick-card{min-height:84px;padding:13px;gap:10px}.quick-icon{width:39px;height:39px}.quick-card small{display:none}.section{padding:45px 0}.section-heading{align-items:center}.section-heading h2{font-size:24px}.news-layout{grid-template-columns:1fr}.news-row{grid-template-columns:88px 1fr}.thumb{width:88px;height:72px}.resource-grid,.disclosure-grid,.contact-grid{grid-template-columns:1fr}.card-grid,.timetable-grid,.video-grid,.gallery-cards,.gallery-cards.large{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:18px;padding:38px 0}.page-hero{padding:42px 0}.page-hero h1{font-size:31px}.article-head{padding:39px 0 30px}.article-head h1{font-size:29px}.prose{font-size:16px}.filter-form{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.form-grid .full{grid-column:auto}.notice-card{grid-template-columns:56px 1fr;padding:13px}.notice-card .arrow-link{display:none}.date-box.large{width:56px;min-width:56px;height:58px}.search-strip{flex-direction:column}.masonry-grid{columns:2 150px}.section-heading>a{font-size:12px}.disclosure-card{grid-template-columns:42px 1fr}.doc-icon.big{width:42px;height:42px}.home-main-grid{gap:18px}}
@media(max-width:430px){.quick-grid{grid-template-columns:1fr}.hero-slider{height:400px}.hero-content{padding:58px 24px}.hero-content h1{font-size:28px}.section-heading{align-items:start}.section-heading>a{display:none}.masonry-grid{columns:1}.brand small{display:none}.news-row h4{font-size:14px}}
.legacy-schedule-panel{margin-top:28px;background:#fff;border:1px solid var(--border,#e3e8ef);border-radius:18px;padding:20px;box-shadow:0 10px 28px rgba(14,42,76,.06)}
.legacy-schedule-wrap{overflow:auto}
.legacy-schedule-table{width:100%;min-width:760px;border-collapse:separate;border-spacing:0;border:1px solid #dfe6ee;border-radius:14px;overflow:hidden}
.legacy-schedule-table th,.legacy-schedule-table td{padding:12px 10px;border-right:1px solid #e7edf4;border-bottom:1px solid #e7edf4;text-align:center;vertical-align:middle}
.legacy-schedule-table thead th{background:#f4f8fc;color:#17365d;font-weight:800}
.legacy-schedule-table tbody th{background:#f8fafc;white-space:nowrap}
.legacy-schedule-table tr:last-child th,.legacy-schedule-table tr:last-child td{border-bottom:0}
.legacy-schedule-table th:last-child,.legacy-schedule-table td:last-child{border-right:0}
.legacy-schedule-table td strong{display:block;color:#172b4d}
.legacy-schedule-table td small,.legacy-schedule-table td em{display:block;margin-top:4px;color:#63758b;font-size:12px;font-style:normal}
.portal-extras{display:grid;grid-template-columns:minmax(300px,.8fr) minmax(0,1.2fr);gap:18px}.poll-card,.links-card{background:#fff;border:1px solid var(--border,#e2e8ef);border-radius:18px;padding:22px;box-shadow:0 10px 28px rgba(20,54,90,.06)}.poll-card h2,.links-card h2{margin:5px 0 16px;font-size:22px}.poll-options{display:grid;gap:8px;margin-bottom:15px}.poll-options label{display:grid;grid-template-columns:22px 1fr auto;gap:8px;align-items:center;border:1px solid #e2e8ef;border-radius:10px;padding:10px 11px;cursor:pointer}.poll-options label:hover{background:#f6f9fc}.poll-options small{color:#8491a0;font-size:10px}.link-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px}.link-grid a{border:1px solid #e3e9ef;border-radius:11px;padding:10px;display:flex;gap:10px;align-items:center;background:#fff}.link-grid a:hover{border-color:#bcd0e2;box-shadow:0 6px 18px #163d650d}.link-grid img{width:42px;height:42px;object-fit:contain;border-radius:8px}.link-grid strong,.link-grid small{display:block}.link-grid strong{font-size:13px}.link-grid small{font-size:10px;color:#7b8998;margin-top:2px}.download-list{display:grid;gap:12px}.download-card{display:grid;grid-template-columns:54px 1fr auto;gap:14px;align-items:center;background:#fff;border:1px solid #e1e8ef;border-radius:15px;padding:16px}.download-card h2{font-size:17px;margin:3px 0}.download-card p{font-size:13px;color:#6c7b8d;margin:0 0 5px}.pdf-grid .post-card{min-height:210px}.site-footer .muted{color:#8fa0b3}.site-footer a{display:block;margin:7px 0}
@media(max-width:760px){.portal-extras{grid-template-columns:1fr}.link-grid{grid-template-columns:1fr}.download-card{grid-template-columns:44px 1fr}.download-card>.file-btn{grid-column:1/-1;justify-self:start}}
/* ===== v4.1.0 Website Theme System ===== */
body{background:var(--theme-surface,#f7f9fc)}
.site-header{background:rgba(255,255,255,.96);backdrop-filter:blur(16px)}
.topbar{background:var(--primary);color:#fff}
.hero-shell{background:linear-gradient(180deg,var(--theme-surface,#f7f9fc),#fff)}
.hero-slider{background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 24px 60px rgba(28,52,78,.16)}
.hero-slide:before{background:radial-gradient(circle at 82% 20%,rgba(255,255,255,.2),transparent 26%),linear-gradient(105deg,rgba(9,18,31,.04),rgba(9,18,31,.58))}
.page-hero{background:linear-gradient(135deg,var(--primary),var(--accent))}
.site-footer{background:linear-gradient(145deg,#12283f,#0b1828);color:#d9e7f4}
.section.soft{background:var(--theme-surface,#f6f9fc)}
.quick-icon,.date-box,.grade-badge,.chip{background:var(--theme-surface,#eef5fc)}
/* Hiện đại xanh */
body.theme-modern-blue .hero-slider{border-radius:26px}
body.theme-modern-blue .quick-card,body.theme-modern-blue .lead-news,body.theme-modern-blue .info-panel,body.theme-modern-blue .resource-card,body.theme-modern-blue .post-card{border-radius:19px}
body.theme-modern-blue .main-nav{box-shadow:0 8px 20px rgba(17,67,116,.09)}
/* Đỏ trang trọng */
body.theme-formal-red{font-family:Inter,"Segoe UI",Roboto,Arial,sans-serif}
body.theme-formal-red .brand strong,body.theme-formal-red .section-heading h2,body.theme-formal-red .article-head h1{font-family:Georgia,"Times New Roman",serif;letter-spacing:0}
body.theme-formal-red .hero-slider{border-radius:12px}
body.theme-formal-red .lead-news,body.theme-formal-red .info-panel,body.theme-formal-red .resource-card,body.theme-formal-red .post-card,body.theme-formal-red .table-card{border-radius:11px}
body.theme-formal-red .main-nav a{font-weight:800}
body.theme-formal-red .quick-card{border-radius:10px;border-top:3px solid var(--accent)}
/* Xanh lá tươi sáng */
body.theme-fresh-green .site-header{box-shadow:0 6px 24px rgba(27,86,59,.06)}
body.theme-fresh-green .hero-slider{border-radius:30px}
body.theme-fresh-green .quick-card,body.theme-fresh-green .lead-news,body.theme-fresh-green .info-panel,body.theme-fresh-green .resource-card,body.theme-fresh-green .post-card,body.theme-fresh-green .form-card{border-radius:22px}
body.theme-fresh-green .section.soft{background:linear-gradient(180deg,var(--theme-surface),#fff)}
body.theme-fresh-green .quick-card:hover{transform:translateY(-4px) scale(1.005)}
/* Cam năng động */
body.theme-sunrise-orange .topbar{background:#78380f}
body.theme-sunrise-orange .brand-row{min-height:96px}
body.theme-sunrise-orange .hero-slider{border-radius:20px}
body.theme-sunrise-orange .main-nav{background:linear-gradient(90deg,var(--primary),#a94c0c)}
body.theme-sunrise-orange .quick-card{box-shadow:0 12px 28px rgba(132,76,26,.08)}
body.theme-sunrise-orange .section-kicker{letter-spacing:.18em}
/* Tím hiện đại */
body.theme-royal-purple .site-header{background:rgba(255,255,255,.94)}
body.theme-royal-purple .main-nav{background:linear-gradient(90deg,var(--primary),#49398a)}
body.theme-royal-purple .hero-slider{border-radius:28px;box-shadow:0 26px 65px rgba(77,59,139,.18)}
body.theme-royal-purple .quick-card,body.theme-royal-purple .post-card,body.theme-royal-purple .info-panel{border-radius:20px}
body.theme-royal-purple .quick-icon{border-radius:50%}
/* Tùy chỉnh */
body.theme-custom .hero-slider{border-radius:24px}
body.theme-custom .main-nav{background:var(--primary)}
@media(max-width:760px){body.theme-modern-blue .hero-slider,body.theme-fresh-green .hero-slider,body.theme-royal-purple .hero-slider{border-radius:18px}.site-header{backdrop-filter:none}}
/* ===== v4.2.0 Public Portal refresh ===== */
.home-stats{padding:8px 0 10px;background:#fff}.home-stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.home-stat{min-height:104px;border:1px solid #e5ebf2;border-radius:18px;background:linear-gradient(180deg,#fff,#f9fbfd);display:grid;grid-template-columns:42px 1fr;grid-template-rows:auto auto;column-gap:12px;align-items:center;padding:16px 18px;box-shadow:0 8px 24px rgba(20,53,86,.05)}.home-stat>span{grid-row:1/3;width:42px;height:42px;border-radius:13px;background:var(--theme-surface,#eef5fc);color:var(--primary);display:grid;place-items:center;font-weight:900}.home-stat strong{font-size:22px;color:#172c43;line-height:1}.home-stat small{font-size:11px;color:#708094;margin-top:4px}.home-services{padding-top:42px}.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.service-card{min-height:112px;border:1px solid #e3eaf1;border-radius:18px;background:#fff;display:flex;align-items:center;gap:15px;padding:18px;box-shadow:0 9px 26px rgba(23,55,87,.05);transition:.18s}.service-card:hover{transform:translateY(-3px);border-color:#cbdbe9;box-shadow:0 14px 30px rgba(23,55,87,.09)}.service-card>span{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,var(--primary),color-mix(in srgb,var(--primary) 68%,#69c1ff));color:#fff;display:grid;place-items:center;font-size:12px;font-weight:900}.service-card strong,.service-card small{display:block}.service-card strong{font-size:15px;color:#1d344d}.service-card small{font-size:11px;color:#788799;margin-top:5px;line-height:1.4}
.community-section{background:linear-gradient(180deg,#f7fafc,#fff)}.community-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(310px,.7fr);gap:20px}.home-opinions{display:grid;grid-template-columns:1fr 1fr;gap:12px}.home-opinions article{border:1px solid #e5ebf1;border-radius:18px;background:#fff;padding:20px;box-shadow:0 8px 25px rgba(25,58,91,.045)}.home-opinions blockquote{margin:0 0 14px;color:#405267;line-height:1.65;font-size:14px}.home-opinions strong,.home-opinions small{display:block}.home-opinions strong{font-size:12px}.home-opinions small{font-size:10px;color:#8491a0;margin-top:3px}.home-support{border-radius:22px;padding:24px;background:linear-gradient(145deg,var(--primary),color-mix(in srgb,var(--primary) 72%,#142b45));color:#fff;box-shadow:0 18px 42px rgba(15,66,111,.18)}.home-support h2{font-size:26px;margin:6px 0}.home-support p{color:#d9e9f7;font-size:12px}.home-support .section-kicker{color:#c8e4ff}.support-mini{display:grid;grid-template-columns:38px 1fr;gap:10px;align-items:center;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.13)}.support-mini>span{width:38px;height:38px;border-radius:12px;background:rgba(255,255,255,.14);display:grid;place-items:center;font-weight:900}.support-mini strong,.support-mini small,.support-mini a{display:block}.support-mini strong{font-size:11px}.support-mini small{font-size:9.5px;color:#c7dced;margin-top:2px}.support-mini a{font-size:10px;color:#fff;margin-top:3px}.home-support>.btn{margin-top:18px;background:#fff;color:var(--primary)}
.public-resource-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.public-resource-card{border:1px solid #e3e9ef;border-radius:19px;background:#fff;overflow:hidden;box-shadow:0 10px 28px rgba(19,52,85,.05);display:flex;flex-direction:column;min-height:220px}.public-resource-image{aspect-ratio:16/9;background:#eff4f8;overflow:hidden}.public-resource-image img{width:100%;height:100%;object-fit:cover;transition:transform .25s}.public-resource-card:hover .public-resource-image img{transform:scale(1.035)}.public-resource-body{padding:18px;display:flex;flex-direction:column;flex:1}.public-resource-body h2{font-size:18px;line-height:1.35;margin:5px 0 8px}.public-resource-body p{font-size:12px;color:#708094;line-height:1.55;margin:0 0 10px}.public-resource-body small{font-size:10px;color:#8c98a5}.resource-kicker{font-size:9px;font-weight:900;color:var(--primary);letter-spacing:.08em;text-transform:uppercase}.public-resource-body .text-link{margin-top:auto;padding-top:12px;color:var(--primary);font-size:11px;font-weight:800}
.opinion-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.opinion-card{border:1px solid #e4eaf0;border-radius:20px;background:#fff;padding:22px;text-align:center;box-shadow:0 10px 30px rgba(20,52,84,.05)}.opinion-card img,.opinion-avatar{width:64px;height:64px;border-radius:50%;object-fit:cover;margin:0 auto 14px;display:grid;place-items:center;background:var(--theme-surface,#eef5fc);color:var(--primary);font-weight:900}.opinion-card blockquote{margin:0 0 16px;color:#536579;line-height:1.65}.opinion-card strong,.opinion-card small{display:block}.opinion-card small{margin-top:3px;color:#8793a0;font-size:10px}.support-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.support-card{border:1px solid #e3e9ef;border-radius:18px;background:#fff;padding:18px;display:flex;gap:14px;align-items:flex-start}.support-card img,.support-avatar{width:64px;height:64px;border-radius:16px;object-fit:cover;display:grid;place-items:center;background:var(--theme-surface,#eef5fc);color:var(--primary);font-weight:900}.support-card h2{font-size:16px;margin:2px 0 3px}.support-card p{font-size:11px;color:#7a8897;margin:0 0 8px}.support-card a{display:block;font-size:11px;margin:5px 0;color:var(--primary)}
.faq-list{display:grid;gap:10px}.faq-item{border:1px solid #e3e9ef;border-radius:15px;background:#fff;overflow:hidden}.faq-item summary{cursor:pointer;padding:17px 20px;font-weight:800;color:#263b52;list-style:none;position:relative}.faq-item summary:after{content:'+';position:absolute;right:18px;color:var(--primary);font-size:20px}.faq-item[open] summary:after{content:'−'}.faq-item .prose{padding:0 20px 18px;font-size:14px}.comment-list{display:grid;gap:10px;margin-bottom:18px}.comment-item{display:grid;grid-template-columns:42px 1fr;gap:12px;padding:15px;border:1px solid #e3e9ef;border-radius:15px;background:#fff}.comment-avatar{width:42px;height:42px;border-radius:13px;background:var(--theme-surface,#eef5fc);color:var(--primary);display:grid;place-items:center;font-weight:900}.comment-item strong,.comment-item small{display:block}.comment-item small{font-size:9.5px;color:#8894a2;margin-top:3px}.comment-item p{margin:8px 0 0;color:#4d6075;line-height:1.6}.comment-form{margin-top:14px}.form-note{display:inline-block;margin-left:10px;color:#7b8897}.data-table-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.newsletter-strip{margin-top:10px;padding:22px 0 24px;border-top:1px solid #ffffff1c;display:flex;align-items:center;justify-content:space-between;gap:20px}.newsletter-strip h4{margin:3px 0;color:#fff}.newsletter-strip form{display:flex;gap:8px;flex-wrap:wrap}.newsletter-strip input{height:42px;border:1px solid #ffffff2d;border-radius:10px;padding:0 12px;background:#ffffff12;color:#fff;min-width:190px}.newsletter-strip input::placeholder{color:#b6c7d8}.newsletter-strip .btn{height:42px}
@media(max-width:1000px){.home-stats-grid{grid-template-columns:repeat(2,1fr)}.service-grid{grid-template-columns:repeat(2,1fr)}.community-grid{grid-template-columns:1fr}.public-resource-grid,.opinion-grid,.support-grid,.data-table-cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.home-stats-grid,.service-grid,.public-resource-grid,.opinion-grid,.support-grid,.data-table-cards{grid-template-columns:1fr}.home-opinions{grid-template-columns:1fr}.newsletter-strip{align-items:flex-start;flex-direction:column}.newsletter-strip form{width:100%;display:grid;grid-template-columns:1fr}.newsletter-strip input{width:100%}.form-note{display:block;margin:10px 0 0}}
/* ===== v4.2.1 Public layout & integration polish ===== */
html,body{min-height:100%}
body{min-height:100vh;display:flex;flex-direction:column;background:#f5f8fc}
.topbar,.site-header,.site-footer{flex:0 0 auto}
main#main{flex:1 0 auto;background:#f7f9fc}
.site-footer{margin-top:auto;background:linear-gradient(145deg,#102942,#081828);box-shadow:0 -1px 0 rgba(255,255,255,.04)}
.footer-grid-v421{grid-template-columns:minmax(260px,1.55fr) repeat(3,minmax(150px,1fr));gap:34px;padding:46px 0 34px}
.footer-school h3{font-size:19px;margin:6px 0 14px}.footer-kicker{display:inline-flex;font-size:9px;letter-spacing:.13em;font-weight:900;color:#9fc5ea;border:1px solid #ffffff20;border-radius:999px;padding:5px 9px}.footer-grid-v421 h4{font-size:13px;margin-bottom:13px}.footer-grid-v421 a{font-size:12px;color:#c5d8ea}.footer-grid-v421 p{font-size:12px;line-height:1.75}.footer-bottom{padding:14px 0 16px;background:#071521}
.page-hero.subpage-hero,.page-hero.compact{padding:44px 0;background:linear-gradient(110deg,color-mix(in srgb,var(--primary) 92%,#082544),color-mix(in srgb,var(--primary) 68%,var(--accent)));border-bottom:1px solid rgba(255,255,255,.1)}
.page-hero:after{width:300px;height:300px;border-width:54px;opacity:.75}.page-hero h1{font-size:34px;margin:5px 0 5px}.page-hero p{font-size:14px;max-width:760px}.subpage-section{padding:46px 0 56px;background:linear-gradient(180deg,#f4f7fb,#f8fafc)}
.subpage-toolbar{background:#fff;border:1px solid #e2e9f0;border-radius:16px;padding:12px;box-shadow:0 10px 28px rgba(21,54,86,.055);margin-bottom:15px}.subpage-toolbar .search-strip{margin:0}.elevated-table{box-shadow:0 12px 34px rgba(19,51,83,.065);border-radius:16px}.responsive-table tbody tr:hover{background:#f9fbfd}.responsive-table td strong{color:#243b53}.responsive-table th{background:#f2f6fa}.search-strip .btn{min-width:118px}
.hero-slide:before{background:linear-gradient(90deg,rgba(4,34,64,.32),rgba(4,34,64,.12) 50%,rgba(4,34,64,.05));filter:none!important;backdrop-filter:none!important}.hero-slide{filter:none!important}.hero-content{text-shadow:0 2px 12px rgba(3,25,48,.24)}
.utility-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.utility-card{display:grid;grid-template-columns:48px 1fr 22px;gap:13px;align-items:center;min-height:105px;padding:18px;border:1px solid #e1e8ef;border-radius:18px;background:#fff;box-shadow:0 9px 28px rgba(19,52,85,.05);transition:.18s}.utility-card:hover{transform:translateY(-3px);border-color:#bfd3e6;box-shadow:0 15px 34px rgba(19,52,85,.095)}.utility-icon{width:48px;height:48px;border-radius:14px;background:linear-gradient(135deg,var(--primary),color-mix(in srgb,var(--primary) 72%,#76c8ff));color:#fff;display:grid;place-items:center;font-size:11px;font-weight:900}.utility-card strong,.utility-card small{display:block}.utility-card strong{font-size:14px;color:#1e354d}.utility-card small{margin-top:4px;color:#718195;font-size:11px;line-height:1.45}.utility-card>b{font-size:20px;color:var(--primary)}
@media(max-width:1000px){.footer-grid-v421{grid-template-columns:1.4fr 1fr 1fr}.footer-grid-v421>div:last-child{grid-column:2/4}.utility-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.footer-grid-v421{grid-template-columns:1fr}.footer-grid-v421>div:last-child{grid-column:auto}.page-hero.subpage-hero,.page-hero.compact{padding:34px 0}.page-hero h1{font-size:29px}.subpage-section{padding:30px 0 42px}.subpage-toolbar{padding:9px}.utility-grid{grid-template-columns:1fr}}
/* ===== v4.2.2 Typography, header, footer & button polish ===== */
html,body{font-family:var(--site-font,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif)}
body{font-size:15px;letter-spacing:-.005em}
.container{width:min(1240px,calc(100% - 40px))}
.topbar{font-size:11.5px;letter-spacing:.01em}
.topbar-inner{height:32px}
.site-header{box-shadow:0 1px 0 #e5ebf2;background:rgba(255,255,255,.985)}
.brand-row{min-height:88px;gap:22px}
.brand{gap:12px}
.brand img{width:58px;height:58px}
.logo-mark{width:58px;height:58px;border-radius:16px;font-size:22px;box-shadow:0 8px 22px rgba(11,87,164,.16)}
.brand strong{font-size:20px;letter-spacing:-.015em}
.brand small{font-size:11px;margin-top:3px;color:#7b8796}
.header-search{width:min(380px,36vw);height:44px;border-radius:12px;background:#f7f9fc}
.header-search input{padding:0 14px;font-size:12.5px}
.header-search button{min-width:62px;padding:0 17px;font-size:12px;transition:.18s}
.header-search button:hover{filter:brightness(.94)}
.main-nav{box-shadow:0 8px 22px rgba(14,60,104,.08)}
.main-nav>div>ul{align-items:center}
.main-nav a{min-height:46px;padding:0 15px;font-size:12.5px;font-weight:800;letter-spacing:.005em}
.main-nav>div>ul>li:first-child>a{padding-left:12px}
.main-nav a:hover,.main-nav .has-submenu:focus-within>a{background:rgba(255,255,255,.115)}
.submenu{min-width:250px;border:1px solid #e5ebf1;border-top:0;border-radius:0 0 14px 14px;padding:8px!important;box-shadow:0 18px 45px rgba(17,53,86,.16)}
.submenu a{min-height:40px;font-size:12px;font-weight:700;padding:0 12px}
.btn{min-height:42px;border-radius:12px;padding:0 18px;font-size:12.5px;letter-spacing:.005em;box-shadow:0 6px 18px rgba(10,72,128,.10);transition:transform .16s ease,box-shadow .16s ease,filter .16s ease}
.btn:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(10,72,128,.15);filter:brightness(.98)}
.btn:active{transform:translateY(0)}
.btn-light{margin-top:0;box-shadow:0 6px 16px rgba(0,0,0,.08)}
.btn-outline{box-shadow:none;background:#fff}
.site-footer{background:linear-gradient(145deg,#102b45 0%,#0a1d30 58%,#071522 100%)}
.footer-grid-v421{grid-template-columns:minmax(280px,1.45fr) repeat(3,minmax(150px,1fr));gap:42px;padding:48px 0 32px}
.footer-school h3{font-size:20px;line-height:1.3;letter-spacing:-.015em;margin:8px 0 13px}
.footer-kicker{font-size:9px;padding:5px 9px}
.footer-grid-v421 h4{font-size:12px;letter-spacing:.02em;margin:2px 0 14px;color:#fff}
.footer-grid-v421 a{font-size:11.5px;margin:8px 0;color:#c7d8e7;transition:.15s}
.footer-grid-v421 a:hover{color:#fff;transform:translateX(2px)}
.footer-grid-v421 p{font-size:11.5px;color:#9fb1c3}
.newsletter-strip{margin-top:0;padding:24px 0 28px;display:grid;grid-template-columns:minmax(250px,1fr) auto;gap:28px;border-top:1px solid rgba(255,255,255,.12)}
.newsletter-strip h4{font-size:15px;margin:5px 0 0}
.newsletter-strip form{display:grid;grid-template-columns:minmax(190px,230px) minmax(190px,230px) auto;gap:9px;align-items:center}
.newsletter-strip input{height:44px;border-radius:11px;background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.18);font-size:11.5px}
.newsletter-strip input:focus{outline:0;border-color:rgba(162,211,255,.7);box-shadow:0 0 0 3px rgba(98,175,238,.12)}
.newsletter-strip .btn{height:44px;margin:0;white-space:nowrap}
.footer-bottom{padding:15px 0 16px;background:rgba(3,13,23,.46);font-size:10px;color:#90a6ba}
.prose{font-size:15.5px;line-height:1.78;color:#27394d;overflow-wrap:anywhere}
.prose p{margin:0 0 1.05em}.prose h2,.prose h3,.prose h4{line-height:1.32;color:#17314c;letter-spacing:-.018em;margin:1.35em 0 .55em}.prose h2{font-size:25px}.prose h3{font-size:21px}.prose h4{font-size:18px}.prose ul,.prose ol{padding-left:1.4em}.prose blockquote{margin:1.2em 0;padding:14px 18px;border-left:4px solid var(--primary);background:#f5f8fb;border-radius:0 12px 12px 0;color:#52657a}.prose a{color:var(--primary);text-decoration:underline;text-underline-offset:2px}.prose img{max-width:100%;height:auto;margin:18px auto;border-radius:12px}.prose figure{margin:22px 0;text-align:center}.prose figcaption{font-size:11px;color:#7d8b9b;margin-top:7px}.prose table{width:100%;border-collapse:collapse;margin:20px 0;background:#fff}.prose th,.prose td{border:1px solid #dfe6ed;padding:9px 11px;text-align:left;vertical-align:top}.prose th{background:#f2f6fa;color:#2d465f}.prose hr{border:0;border-top:1px solid #dfe6ed;margin:28px 0}
body.font-serif .prose{font-family:"Noto Serif",Georgia,"Times New Roman",serif;line-height:1.85}
@media(max-width:1000px){.container{width:min(100% - 28px,960px)}.brand-row{min-height:80px}.footer-grid-v421{gap:28px}.newsletter-strip{grid-template-columns:1fr}.newsletter-strip form{grid-template-columns:1fr 1fr auto}}
@media(max-width:760px){.container{width:min(100% - 24px,720px)}.topbar-inner{height:30px}.topbar-inner>div{display:none}.brand-row{min-height:72px}.brand img,.logo-mark{width:50px;height:50px}.brand strong{font-size:16px}.header-search{display:none}.main-nav a{font-size:13px}.footer-grid-v421{padding:38px 0 28px;gap:22px}.newsletter-strip form{width:100%;grid-template-columns:1fr}.newsletter-strip .btn{width:100%}}
/* ======================================================================
v4.3.0 - clean URLs, reader sizing, gallery/lightbox polish
====================================================================== */
.site-v430{font-size:calc(var(--site-base-size,16px) * var(--reader-scale,1));}
.site-v430 .topbar-tools{display:flex;align-items:center;gap:10px}.site-v430 .reader-font-controls{display:inline-flex;align-items:center;border:1px solid rgba(255,255,255,.24);border-radius:7px;overflow:hidden}.site-v430 .reader-font-controls button{border:0;background:transparent;color:inherit;font:inherit;font-size:.72em;font-weight:800;padding:3px 6px;cursor:pointer}.site-v430 .reader-font-controls button+button{border-left:1px solid rgba(255,255,255,.2)}.site-v430 .reader-font-controls button.active,.site-v430 .reader-font-controls button:hover{background:rgba(255,255,255,.16)}
.site-v430 .gallery-cards-v430 .gallery-card{overflow:hidden}.site-v430 .gallery-cover{position:relative}.site-v430 .gallery-cover em{position:absolute;right:10px;bottom:10px;background:rgba(11,32,52,.78);color:#fff;border-radius:999px;padding:5px 9px;font-style:normal;font-size:.72em;font-weight:800;backdrop-filter:blur(5px)}.site-v430 .gallery-card p{color:var(--muted,#64748b);font-size:.86em;line-height:1.55;margin:6px 0}.site-v430 .album-meta{display:inline-flex;margin-top:10px;padding:5px 9px;border:1px solid rgba(255,255,255,.28);border-radius:999px;font-size:.75em;font-weight:800}
.site-v430 .gallery-lightbox-grid .gallery-lightbox-link{display:block;position:relative;overflow:hidden;border-radius:10px}.site-v430 .gallery-lightbox-grid .gallery-lightbox-link img{transition:transform .25s ease}.site-v430 .gallery-lightbox-grid .gallery-lightbox-link:hover img{transform:scale(1.025)}.site-v430 .zoom-mark{position:absolute;right:8px;top:8px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:rgba(10,31,50,.72);color:#fff;opacity:0;transition:.2s}.site-v430 .gallery-lightbox-link:hover .zoom-mark{opacity:1}
.gallery-lightbox[hidden]{display:none}.gallery-lightbox{position:fixed;inset:0;z-index:9999;background:rgba(7,17,28,.92);display:grid;grid-template-columns:54px minmax(0,1fr) 54px;align-items:center;padding:28px;backdrop-filter:blur(8px)}.gallery-lightbox figure{margin:0;display:grid;place-items:center;max-height:92vh}.gallery-lightbox img{max-width:min(1200px,88vw);max-height:82vh;object-fit:contain;border-radius:8px;box-shadow:0 20px 70px rgba(0,0,0,.4)}.gallery-lightbox figcaption{color:#fff;margin-top:10px;text-align:center;font-size:.9rem}.gallery-lightbox button{border:0;background:rgba(255,255,255,.11);color:#fff;width:44px;height:44px;border-radius:50%;font-size:28px;cursor:pointer}.gallery-lightbox button:hover{background:rgba(255,255,255,.2)}.gallery-lightbox .gl-close{position:absolute;right:20px;top:18px}.lightbox-open{overflow:hidden}
@media(max-width:760px){.site-v430 .topbar-tools>a,.site-v430 .topbar-tools>.dot,.site-v430 .topbar-tools>span:not(.reader-font-controls){display:none}.gallery-lightbox{grid-template-columns:40px minmax(0,1fr) 40px;padding:12px}.gallery-lightbox img{max-width:84vw}.gallery-lightbox button{width:36px;height:36px;font-size:22px}}
.site-v430 .prose iframe{display:block;width:100%;max-width:100%;aspect-ratio:16/9;height:auto;min-height:320px;border:0;border-radius:12px;margin:22px auto;background:#0b1724}
@media(max-width:620px){.site-v430 .prose iframe{min-height:210px}}
/* v4.4.0 - Trang bài viết và bài liên quan */
.article-head-inner{max-width:920px;padding:6px 0}
.article-layout-v440{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:38px;align-items:start}
.article-main-v440{min-width:0;background:#fff;border:1px solid #e5edf5;border-radius:20px;padding:30px 34px;box-shadow:0 12px 34px rgba(25,55,90,.06)}
.article-main-v440 .prose{max-width:none}
.article-main-v440 .prose img{max-width:100%;height:auto;border-radius:14px;display:block;margin:18px auto}
.article-main-v440 .prose figure{margin:22px 0;text-align:center}.article-main-v440 .prose figcaption{color:#718096;font-size:.88em;margin-top:7px}
.related-panel-v440{position:sticky;top:92px;background:#fff;border:1px solid #e5edf5;border-radius:18px;padding:18px;box-shadow:0 12px 34px rgba(25,55,90,.06)}
.related-head h2{font-size:20px;margin:4px 0 14px}.related-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;background:#f1f5f9;border-radius:11px;padding:4px;margin-bottom:12px}
.related-tabs a{font-size:11px;font-weight:800;text-align:center;padding:8px 4px;border-radius:8px;color:#5b6b7f;text-decoration:none;line-height:1.2}.related-tabs a.active{background:#fff;color:var(--primary,#0b5cab);box-shadow:0 2px 8px rgba(20,50,80,.08)}
.related-list-v440{display:grid;gap:2px}.related-item-v440{display:grid;grid-template-columns:76px 1fr;gap:11px;padding:10px 2px;border-bottom:1px solid #edf2f7;text-decoration:none;color:inherit}.related-item-v440:last-child{border-bottom:0}
.related-thumb{width:76px;height:58px;border-radius:9px;background:#eef4fa;overflow:hidden;display:grid;place-items:center;color:#6b7c90}.related-thumb img{width:100%;height:100%;object-fit:cover}.related-copy{min-width:0}.related-copy strong{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;font-size:13px;line-height:1.45}.related-copy small{display:block;color:#7a899b;font-size:10.5px;margin-top:5px}
.related-pagination{display:flex;justify-content:center;gap:5px;padding-top:13px}.related-pagination a,.related-pagination span{min-width:29px;height:29px;border-radius:8px;display:grid;place-items:center;text-decoration:none;font-size:11px;border:1px solid #e2e8f0;color:#526275}.related-pagination a.active{background:var(--primary,#0b5cab);color:#fff;border-color:var(--primary,#0b5cab)}
.empty-state.compact{padding:18px 8px;font-size:12px}
@media(max-width:980px){.article-layout-v440{grid-template-columns:1fr}.related-panel-v440{position:static}.article-main-v440{padding:24px}.related-tabs{grid-template-columns:repeat(3,1fr)}}
@media(max-width:600px){.article-main-v440{padding:18px;border-radius:15px}.related-panel-v440{padding:15px}.related-tabs a{font-size:10px}.related-item-v440{grid-template-columns:68px 1fr}.related-thumb{width:68px;height:54px}}