:root {
  --navy: #0b3a75;
  --navy-dark: #072a56;
  --navy-soft: #e8eef7;
  --red: #b3191f;
  --gold: #c9a227;
  --bg: #f3f5f8;
  --card: #fff;
  --text: #1b2533;
  --muted: #5a6677;
  --line: #dde3eb;
  --radius: 6px;
  --shadow: 0 1px 2px rgba(16, 32, 64, .06), 0 4px 14px rgba(16, 32, 64, .06);
  --serif: "Noto Serif", Georgia, "Times New Roman", serif;
  --sans: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 16px/1.6 var(--sans); }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--red); }
img { max-width: 100%; display: block; }
svg { width: 1em; height: 1em; fill: currentColor; flex: none; }
h1, h2, h3 { line-height: 1.3; margin: 0; }
.wrap { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 860px; }
.skip { position: absolute; left: -999px; top: 0; background: #fff; padding: 8px 12px; z-index: 50; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }

/* Thanh trên cùng */
.topbar { background: var(--navy-dark); color: #c9d6ea; font-size: 13px; border-top: 3px solid var(--red); }
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; gap: 12px; min-height: 34px; }
.topbar .today { text-transform: capitalize; }
.topbar nav { display: flex; gap: 18px; }
.topbar nav a { display: inline-flex; align-items: center; gap: 4px; }
.topbar nav a:hover { color: #fff; }

/* Đầu trang */
.masthead { background: #fff linear-gradient(100deg, #fff 0%, #fff 55%, #f2f6fc 100%); border-bottom: 1px solid var(--line); }
.masthead .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-top: 18px; padding-bottom: 18px; }
.brand { display: flex; align-items: center; gap: 14px; min-width: 0; }
.brand img { width: 64px; height: 64px; }
.brand strong { display: block; font: 700 26px/1.2 var(--serif); color: var(--navy); text-transform: uppercase; letter-spacing: .3px; }
.brand em { display: block; font-style: normal; color: var(--muted); font-size: 14px; margin-top: 2px; }
.brand:hover strong { color: var(--navy); }
.search { display: flex; width: 340px; max-width: 100%; border: 1px solid #c7d1de; border-radius: 999px; overflow: hidden; background: #fff; }
.search input { flex: 1; min-width: 0; border: 0; padding: 10px 16px; font: inherit; font-size: 15px; background: transparent; }
.search input:focus { outline: none; }
.search:focus-within { border-color: var(--navy); box-shadow: 0 0 0 3px rgba(11, 58, 117, .12); }
.search button { border: 0; background: var(--navy); color: #fff; width: 48px; display: grid; place-items: center; cursor: pointer; font-size: 20px; }
.search button:hover { background: var(--red); }
.search.big { width: 100%; margin: 4px 0 24px; }
.search.big input { padding: 14px 20px; font-size: 17px; }

/* Menu */
.mainnav { background: var(--navy); color: #fff; position: sticky; top: 0; z-index: 20; box-shadow: 0 2px 8px rgba(0, 0, 0, .15); }
.mainnav ul { list-style: none; margin: 0; padding: 0; }
.mainnav > .wrap > ul { display: flex; }
.mainnav > .wrap > ul > li { position: relative; }
.mainnav > .wrap > ul > li > a { display: block; padding: 13px 16px; font-weight: 600; font-size: 15px; border-bottom: 3px solid transparent; }
.mainnav > .wrap > ul > li:hover > a, .mainnav > .wrap > ul > li.active > a { background: var(--navy-dark); border-bottom-color: var(--gold); color: #fff; }
.mainnav li ul { display: none; position: absolute; left: 0; top: 100%; min-width: 260px; background: #fff; color: var(--text); box-shadow: var(--shadow); border-top: 3px solid var(--gold); padding: 6px 0; }
.mainnav li:hover > ul, .mainnav li:focus-within > ul { display: block; }
.mainnav li ul a { display: block; padding: 9px 16px; font-size: 14.5px; }
.mainnav li ul a:hover { background: var(--navy-soft); color: var(--navy); }
.navtoggle { display: none; }

/* Ảnh trình chiếu */
.hero { position: relative; background: var(--navy-dark); }
.slides { position: relative; height: clamp(220px, 38vw, 460px); overflow: hidden; }
.slide { position: absolute; inset: 0; margin: 0; opacity: 0; transition: opacity 1.2s ease; }
.slide.on { opacity: 1; }
.slide img { width: 100%; height: 100%; object-fit: cover; }
.slide::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(7, 42, 86, 0) 45%, rgba(7, 42, 86, .78) 100%); }
.slide figcaption { position: absolute; z-index: 1; left: 0; right: 0; bottom: 64px; max-width: 1200px; margin: 0 auto; padding: 0 16px; color: #fff; }
.slide figcaption span { display: block; font: 600 clamp(16px, 2.2vw, 24px)/1.3 var(--serif); text-shadow: 0 1px 4px rgba(0, 0, 0, .4); }
.slide figcaption small { font-size: 12px; opacity: .8; }
.dots { position: absolute; z-index: 2; right: max(16px, calc((100% - 1200px) / 2 + 16px)); bottom: 72px; display: flex; gap: 8px; }
.dots button { width: 10px; height: 10px; border-radius: 50%; border: 2px solid #fff; background: transparent; padding: 0; cursor: pointer; }
.dots button.on { background: var(--gold); border-color: var(--gold); }
.hero-band { background: linear-gradient(90deg, var(--red) 0 6px, var(--navy) 6px); color: #fff; }
.hero-band .wrap { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; padding-top: 12px; padding-bottom: 12px; }
.hero-band strong { font: 700 18px/1.3 var(--serif); text-transform: uppercase; letter-spacing: .4px; }
.hero-band span { color: #c9d6ea; font-size: 14px; }
.hero-plain { background: linear-gradient(120deg, var(--navy-dark), var(--navy)); color: #fff; padding: 36px 0; }
.hero-plain strong { display: block; font: 700 28px/1.3 var(--serif); }
.hero-plain span { color: #c9d6ea; }

/* Khung chung */
.box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px 18px 18px; }
.box-title { display: flex; justify-content: space-between; align-items: center; gap: 8px; font: 700 17px/1.3 var(--sans); text-transform: uppercase; color: var(--navy); border-bottom: 2px solid var(--navy-soft); padding-bottom: 10px; margin-bottom: 14px; position: relative; }
.box-title::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 64px; height: 2px; background: var(--red); }
.box-title .more { display: inline-flex; align-items: center; gap: 4px; font-size: 13px; text-transform: none; font-weight: 500; color: var(--muted); }
.box-title .more:hover { color: var(--red); }
.meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; color: var(--muted); font-size: 13px; }
.meta span { display: inline-flex; align-items: center; gap: 5px; }
.tag { color: var(--red); font-weight: 600; text-transform: uppercase; font-size: 12px; letter-spacing: .3px; }
.empty { color: var(--muted); }
.thumb { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; border-radius: 4px; background: var(--navy-soft); }
.thumb-empty { display: grid; place-items: center; background: linear-gradient(135deg, var(--navy-soft), #f8fafc); }
.thumb-empty img { width: 34%; opacity: .55; }
.btn { display: inline-flex; align-items: center; gap: 8px; background: var(--navy); color: #fff; border: 0; border-radius: 4px; padding: 10px 18px; font: 600 15px var(--sans); cursor: pointer; }
.btn:hover { background: var(--red); color: #fff; }

/* Trang chủ */
.home-top { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 24px; margin: 28px 0; }
.focus { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px 18px 18px; }
.lead-story { display: grid; grid-template-columns: 1.15fr 1fr; gap: 20px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.lead-img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border-radius: 4px; }
.lead-img.thumb-empty { display: grid; }
.lead-story h2 { font: 700 23px/1.35 var(--serif); color: var(--navy); margin: 8px 0 10px; }
.lead-story h2 a:hover { color: var(--red); }
.lead-story p { margin: 0; color: #3a4554; }
.sub-stories { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 20px; padding-top: 18px; }
.mini { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 12px; align-items: start; }
.mini h3 { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.latest ol { list-style: none; margin: 0; padding: 0; counter-reset: n; }
.latest li { counter-increment: n; display: grid; grid-template-columns: 28px 1fr; column-gap: 8px; padding: 10px 0; border-bottom: 1px dashed var(--line); }
.latest li:last-child { border-bottom: 0; }
.latest li::before { content: counter(n); grid-row: span 2; width: 24px; height: 24px; border-radius: 50%; background: var(--navy-soft); color: var(--navy); font-weight: 700; font-size: 13px; display: grid; place-items: center; }
.latest li:nth-child(-n+3)::before { background: var(--red); color: #fff; }
.latest a { font-weight: 500; font-size: 14.5px; line-height: 1.45; }
.latest time, .side-list time { color: var(--muted); font-size: 12.5px; }
.quick { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-bottom: 28px; }
.quick a { background: var(--navy); color: #fff; border-radius: var(--radius); padding: 16px 18px; border-left: 5px solid var(--gold); transition: transform .15s, background .15s; }
.quick a:hover { background: var(--navy-dark); transform: translateY(-2px); color: #fff; }
.quick strong { display: block; font-size: 15.5px; }
.quick span { color: #c9d6ea; font-size: 13.5px; }
.groups { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-bottom: 40px; }
.doc-list { list-style: none; margin: 0; padding: 0; }
.doc-list li { display: flex; gap: 10px; padding: 10px 0; border-bottom: 1px dashed var(--line); }
.doc-list li:last-child { border-bottom: 0; }
.doc-list li > svg { color: var(--red); margin-top: 4px; font-size: 16px; }
.doc-list a { font-weight: 500; font-size: 15px; line-height: 1.45; }
.doc-list .sub { display: block; color: var(--muted); font-size: 12.5px; margin-top: 2px; }

/* Danh sách chuyên mục */
.crumbs { font-size: 13.5px; color: var(--muted); margin: 20px 0 6px; }
.crumbs a:hover { color: var(--red); }
.page-head { display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; border-bottom: 3px solid var(--navy); margin: 8px 0 18px; padding-bottom: 10px; }
.page-head h1 { font: 700 28px/1.3 var(--serif); color: var(--navy); }
.page-head span { color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.chips a { border: 1px solid #c7d1de; border-radius: 999px; padding: 6px 14px; font-size: 14px; background: #fff; }
.chips a.on, .chips a:hover { background: var(--navy); border-color: var(--navy); color: #fff; }
.cards { display: grid; gap: 14px; margin-bottom: 24px; }
.card { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 18px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow); }
.card h3 { font: 700 18px/1.4 var(--serif); color: var(--navy); margin-bottom: 6px; }
.card h3 a:hover { color: var(--red); }
.card p { margin: 8px 0 0; color: #3a4554; font-size: 15px; }
.pager { display: flex; justify-content: center; align-items: center; gap: 16px; margin: 0 0 40px; }
.pager a { background: #fff; border: 1px solid var(--line); border-radius: 4px; padding: 8px 14px; font-weight: 600; }
.pager a:hover { background: var(--navy); color: #fff; }

/* Bài viết */
.article-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 28px; margin-bottom: 40px; }
.article { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 4px 32px 28px; margin-top: 20px; }
.article h1 { font: 700 clamp(24px, 3vw, 32px)/1.3 var(--serif); color: var(--navy); margin: 10px 0 12px; }
.article .src { color: var(--navy); font-weight: 600; }
.sapo { font-weight: 600; font-size: 17px; color: #263142; margin: 18px 0; padding-left: 14px; border-left: 4px solid var(--red); }
.cover { margin: 0 0 18px; }
.cover img { width: 100%; border-radius: 4px; }
.content { font-size: 17px; line-height: 1.75; overflow-wrap: anywhere; }
.content p { margin: 0 0 14px; }
.content img { margin: 10px auto; height: auto !important; border-radius: 3px; }
.content table { border-collapse: collapse; width: 100%; margin: 12px 0; font-size: 15px; display: block; overflow-x: auto; }
.content td, .content th { border: 1px solid var(--line); padding: 6px 8px; }
.content a { color: var(--navy); text-decoration: underline; }
.content h2, .content h3 { color: var(--navy); margin: 22px 0 10px; font-family: var(--serif); }
.content blockquote { margin: 14px 0; padding: 10px 16px; background: var(--navy-soft); border-left: 4px solid var(--navy); }
.ta-center { text-align: center; }
.ta-right { text-align: right; }
.ta-justify { text-align: justify; }
.content p.ta-center { color: var(--muted); font-size: 15px; font-style: italic; }
.readmore { background: var(--navy-soft); border: 1px solid #cbd8ea; border-radius: var(--radius); padding: 18px 20px; margin: 10px 0 18px; }
.readmore p { margin: 0 0 12px; }
.files { margin-top: 22px; }
.files h2 { font-size: 16px; color: var(--navy); text-transform: uppercase; margin-bottom: 8px; }
.files ul { list-style: none; padding: 0; margin: 0; }
.files li { display: flex; gap: 8px; align-items: center; padding: 8px 12px; background: #fafbfd; border: 1px solid var(--line); border-radius: 4px; margin-bottom: 6px; }
.files li svg { color: var(--red); }
.files a { color: var(--navy); font-weight: 500; }
.source-box { margin: 24px 0 0; padding-top: 14px; border-top: 1px solid var(--line); text-align: right; font-style: italic; color: var(--muted); }
.source-box a { color: var(--navy); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; }
.side { margin-top: 20px; display: grid; gap: 20px; align-content: start; }
.side-list { list-style: none; padding: 0; margin: 0; }
.side-list li { padding: 9px 0; border-bottom: 1px dashed var(--line); display: grid; }
.side-list li:last-child { border-bottom: 0; }
.side-list a { font-weight: 500; font-size: 14.5px; line-height: 1.45; }
.search-box form { display: flex; gap: 8px; }
.search-box input { flex: 1; min-width: 0; border: 1px solid #c7d1de; border-radius: 4px; padding: 8px 10px; font: inherit; }
.note { background: #fff8e6; border-left: 4px solid var(--gold); padding: 12px 16px; }
.credits li { margin-bottom: 6px; }
.error-page { text-align: center; padding: 60px 16px; }
.error-page .code { font: 700 72px/1 var(--serif); color: var(--navy); margin: 0; }
.error-page h1 { margin: 12px 0 24px; font-size: 22px; }

/* Chân trang */
.footer { background: var(--navy-dark); color: #c9d6ea; border-top: 4px solid var(--gold); padding: 32px 0 24px; font-size: 14px; }
.foot-brand { display: flex; gap: 14px; align-items: center; }
.foot-brand strong { color: #fff; font: 700 18px var(--serif); text-transform: uppercase; }
.foot-brand p { margin: 2px 0 0; }
.foot-cols { display: flex; flex-wrap: wrap; gap: 24px 64px; margin: 22px 0; }
.foot-cols h4 { color: #fff; margin: 0 0 8px; font-size: 14px; text-transform: uppercase; letter-spacing: .4px; }
.foot-cols a { display: block; padding: 3px 0; }
.foot-cols a:hover, .disclaimer a:hover { color: #fff; }
.disclaimer { border-top: 1px solid rgba(255, 255, 255, .12); padding-top: 16px; margin: 0; font-size: 13px; line-height: 1.6; }
.disclaimer a { text-decoration: underline; }

/* Màn hình hẹp */
@media (max-width: 1000px) {
  .home-top, .article-wrap { grid-template-columns: 1fr; }
  .quick { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mainnav > .wrap > ul > li > a { padding: 13px 11px; font-size: 14px; }
}
@media (max-width: 760px) {
  body { font-size: 15.5px; }
  .topbar .today { display: none; }
  .topbar .wrap { justify-content: flex-end; }
  .masthead .wrap { flex-direction: column; align-items: stretch; gap: 14px; padding-top: 14px; padding-bottom: 14px; }
  .brand img { width: 52px; height: 52px; }
  .brand strong { font-size: 19px; }
  .brand em { font-size: 12.5px; }
  .search { width: 100%; }
  .navtoggle { display: flex; align-items: center; gap: 8px; background: none; border: 0; color: #fff; font: 600 15px var(--sans); padding: 12px 0; cursor: pointer; }
  .navtoggle svg { font-size: 22px; }
  .mainnav > .wrap > ul { display: none; flex-direction: column; padding-bottom: 8px; }
  .mainnav > .wrap > ul.open { display: flex; }
  .mainnav li ul { position: static; display: block; box-shadow: none; border: 0; background: transparent; padding: 0 0 6px 14px; min-width: 0; }
  .mainnav li ul a { color: #c9d6ea; padding: 6px 12px; font-size: 14px; }
  .mainnav li ul a:hover { background: transparent; color: #fff; }
  .slide figcaption { bottom: 56px; }
  .slide figcaption small { display: none; }
  .dots { bottom: 62px; }
  .hero-band span { display: none; }
  .lead-story { grid-template-columns: 1fr; }
  .lead-story h2 { font-size: 20px; }
  .sub-stories, .groups, .quick { grid-template-columns: 1fr; }
  .mini { grid-template-columns: 104px minmax(0, 1fr); }
  .card { grid-template-columns: 112px minmax(0, 1fr); gap: 12px; padding: 12px; }
  .card h3 { font-size: 16px; }
  .card p { display: none; }
  .article { padding: 4px 16px 20px; }
  .content { font-size: 16.5px; }
  .page-head h1 { font-size: 23px; }
}
@media (prefers-reduced-motion: reduce) { .slide { transition: none; } }