/* Trang Tin tức + trang bài viết (máy chủ server/tintuc.js dựng HTML). Bố cục theo seofix.vn/tin-tuc (anh dặn 28/10/2026). */
:root{--cam:#F2801F;--cam2:#FFA24A;--xanh:#155E9E;--xanhNhat:#EAF3FC;--dam:#0B2A4A;--chu:#16213A;--phu:#5B6B85;--vien:#E4EAF2;--nen:#F4F8FC}
*{box-sizing:border-box;margin:0;padding:0}
html,body{overflow-x:clip}
@supports not (overflow-x:clip){html,body{overflow-x:hidden}}
body{font-family:'Be Vietnam Pro',system-ui,sans-serif;color:var(--chu);background:var(--nen);line-height:1.6}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.boc{max-width:1140px;margin:0 auto;padding:0 20px}

/* đầu trang (giống trang chủ) */
header.dau{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--vien)}
.dong-dau{display:flex;align-items:center;gap:12px;height:66px}
.dong-dau .logo{display:flex;align-items:center;gap:12px;flex:1;min-width:0}
.dong-dau .logo img{width:40px;height:40px;border-radius:11px}
.dong-dau .logo b{font-size:18px;font-weight:800;white-space:nowrap}
.dong-dau nav{display:flex;gap:22px;font-weight:600;color:var(--phu);font-size:15px;align-items:center;white-space:nowrap}
.dong-dau nav a:hover,.dong-dau nav a.dang{color:var(--cam)}
.dong-dau nav a.tv{background:var(--dam);color:#fff;border-radius:999px;padding:8px 16px}
@media(max-width:860px){.dong-dau nav a:not(.tv):not(.dang){display:none}}
@media(max-width:520px){.dong-dau .logo b{display:none}.dong-dau nav{gap:14px}.dong-dau nav a.tv{padding:7px 12px;font-size:14px}}

/* danh sách tin */
.trang-tin{padding-top:28px;padding-bottom:56px}
.dau-tin{max-width:680px;margin:0 auto;text-align:center;padding-top:8px}
.dau-tin h1{font-size:clamp(28px,4vw,38px);font-weight:800;line-height:1.2}
.dau-tin p{margin-top:12px;color:var(--phu)}
.luoi-bai{display:grid;gap:20px;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:36px}
@media(max-width:980px){.luoi-bai{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.luoi-bai{grid-template-columns:1fr}}
.the-bai{display:flex;flex-direction:column;overflow:hidden;border-radius:18px;background:#fff;box-shadow:0 1px 3px rgba(15,23,42,.06);border:1px solid var(--vien);transition:transform .2s,box-shadow .2s,border-color .2s}
.the-bai:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(11,42,74,.12);border-color:#9CC8F0}
.the-bai .bia{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#EAF3FC,#FFF3E8);display:flex;align-items:center;justify-content:center}
.the-bai .bia img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.the-bai:hover .bia img{transform:scale(1.03)}
.the-bai .bia img.logo-mo,.hop-xem .nho img.logo-mo{width:44px;height:44px;opacity:.45;border-radius:10px}
.the-bai .than{display:flex;flex:1;flex-direction:column;gap:8px;padding:16px}
.the-bai h3{font-size:17px;font-weight:800;line-height:1.35;text-wrap:balance}
.the-bai:hover h3{color:var(--xanh)}
.the-bai p{font-size:14px;color:var(--phu);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.the-bai time{margin-top:auto;padding-top:4px;font-size:12.5px;color:#94a3b8}
.trong{max-width:420px;margin:40px auto 0;background:#fff;border-radius:18px;padding:32px;text-align:center;color:var(--phu);border:1px solid var(--vien)}
.phan-trang{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:32px}
.phan-trang a{min-width:42px;height:42px;padding:0 14px;display:flex;align-items:center;justify-content:center;border-radius:12px;background:#fff;border:1px solid var(--vien);font-weight:700}
.phan-trang a.dang{background:var(--xanh);border-color:var(--xanh);color:#fff}

/* trang bài: bài bên phải, cột "Xem nhiều nhất" bên trái (máy tính) / dưới bài (điện thoại) */
.trang-bai{padding-top:22px;padding-bottom:56px}
.hai-cot-bai{display:grid;gap:40px;max-width:768px;margin:0 auto}
.hai-cot-bai article{order:1;min-width:0}
.cot-trai{order:2}
@media(min-width:1024px){.hai-cot-bai{max-width:none;grid-template-columns:17rem minmax(0,1fr);gap:48px}.hai-cot-bai article{order:2;max-width:768px}.cot-trai{order:1}.hop-xem{position:sticky;top:86px}}
.duong{display:flex;flex-wrap:wrap;gap:6px;font-size:14px;color:var(--phu)}
.duong a:hover{color:var(--xanh)}
.trang-bai h1{margin-top:12px;font-size:clamp(28px,4vw,36px);font-weight:800;line-height:1.25;text-wrap:balance}
.trang-bai .ngay{margin-top:10px;display:flex;flex-wrap:wrap;gap:6px 10px;font-size:14px;color:var(--phu)}
.bia-bai{margin-top:24px;width:100%;height:auto;border-radius:18px;background:#e2e8f0;border:1px solid var(--vien);box-shadow:0 1px 3px rgba(15,23,42,.06)}
.noi-dung-bai{margin-top:30px;font-size:17px;line-height:1.8;color:#1f2a44}
.noi-dung-bai>*+*{margin-top:16px}
.noi-dung-bai h2{margin-top:34px;font-size:24px;line-height:1.35;font-weight:800;color:var(--chu)}
.noi-dung-bai h3{margin-top:26px;font-size:20px;line-height:1.4;font-weight:800;color:var(--chu)}
.noi-dung-bai a{color:var(--xanh);text-decoration:underline;text-underline-offset:3px}
.noi-dung-bai ul,.noi-dung-bai ol{padding-left:24px}
.noi-dung-bai li+li{margin-top:6px}
.noi-dung-bai img{border-radius:14px;height:auto;margin:8px auto}
.noi-dung-bai figure figcaption{font-size:14px;color:var(--phu);text-align:center;margin-top:6px}
.noi-dung-bai blockquote{border-left:4px solid var(--cam);background:#FFF7EE;border-radius:0 12px 12px 0;padding:12px 18px}
.noi-dung-bai table{width:100%;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto}
.noi-dung-bai th,.noi-dung-bai td{border:1px solid var(--vien);padding:8px 12px;text-align:left}
.noi-dung-bai th{background:var(--xanhNhat)}
.noi-dung-bai .video-co-gian{position:relative;aspect-ratio:16/9;border-radius:14px;overflow:hidden;background:#000}
.noi-dung-bai .video-co-gian iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.quang-ba{margin-top:44px;display:flex;flex-wrap:wrap;align-items:center;gap:16px;border-radius:18px;padding:22px 24px;color:#fff;background:linear-gradient(135deg,#155E9E,#0F6E8C)}
.quang-ba div{flex:1;min-width:220px}
.quang-ba b{font-size:18px;font-weight:800}
.quang-ba p{margin-top:4px;font-size:14px;color:rgba(255,255,255,.9)}
.quang-ba a{flex:none;background:#fff;color:var(--xanh);font-weight:800;border-radius:12px;padding:10px 20px}
.quang-ba a:hover{background:#FFF3E8;color:var(--cam)}
.hop-xem{background:#fff;border:1px solid var(--vien);border-radius:18px;padding:16px;box-shadow:0 1px 3px rgba(15,23,42,.06)}
.hop-xem h2{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:800}
.hop-xem h2 span{width:28px;height:28px;border-radius:8px;background:#FFE4E6;display:flex;align-items:center;justify-content:center;font-size:14px}
.hop-xem ol{list-style:none;margin-top:12px;display:grid;gap:4px}
.hop-xem li a{display:flex;align-items:flex-start;gap:10px;border-radius:12px;padding:8px;transition:background .2s}
.hop-xem li a:hover{background:var(--xanhNhat)}
.hop-xem .so{flex:none;width:24px;height:24px;margin-top:2px;border-radius:8px;color:#fff;font-size:12px;font-weight:900;display:flex;align-items:center;justify-content:center}
/* ảnh bìa mẫu: chữ tiêu đề nằm bên trái → phóng to, chỉ lấy khúc chữ (như seofix) */
.hop-xem .nho{position:relative;flex:none;width:88px;height:56px;overflow:hidden;border-radius:10px;background:linear-gradient(135deg,#155E9E,#0F6E8C);display:flex;align-items:center;justify-content:center}
.hop-xem .nho img:not(.logo-mo){position:absolute;max-width:none;width:210%;left:-6%;top:-38%}
.hop-xem .chu{min-width:0}
.hop-xem .chu b{font-size:14px;line-height:1.35;font-weight:600;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.hop-xem li a:hover .chu b{color:var(--xanh)}
.hop-xem .chu small{display:block;margin-top:2px;font-size:12px;color:#94a3b8}
.lien-quan{max-width:1024px;margin:56px auto 0}
.lien-quan h2{font-size:22px;font-weight:800}
.lien-quan .luoi-bai{margin-top:16px}

/* chân trang (HTML lấy từ index.html) */
footer{padding:40px 0 0;background:#0A1A2E;color:#b6c2d6;font-size:15px}
.chan{display:grid;grid-template-columns:1.5fr 1.1fr .9fr;gap:28px;align-items:start}
.chan h3{color:#fff;font-size:16px;margin:0 0 12px;font-weight:800}
.chan .ten-cty{color:#fff;font-weight:800;font-size:16px;margin:0 0 12px}
.chan ul{list-style:none}
.tt-cty li{display:flex;gap:10px;align-items:flex-start;margin:7px 0;line-height:1.5}
.tt-cty li>span{flex:none;width:22px;text-align:center}
.tt-cty b{color:#fff}
.chan small{color:#8fa0b8}
.chan a{color:#fff;font-weight:600;text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(255,255,255,.35)}
.lien-ket li{margin:6px 0}
.lien-ket a{text-decoration:none!important;font-weight:500;color:#dfe7f5}
.lien-ket a:hover{color:var(--cam2)}
.chan a.yt{display:inline-flex;align-items:center;gap:8px}
.chan a.yt svg{width:26px;height:19px;flex:none}
.app-chan{display:flex;gap:12px;align-items:flex-start;margin:12px 0 14px}
.app-chan img{border-radius:12px;flex:none}
.app-chan b{display:block;color:#fff;font-size:15.5px;line-height:1.25}
.app-chan small{display:block;font-size:13px;margin:2px 0 6px}
.app-chan .cua{display:flex;gap:6px;flex-wrap:wrap}
.app-chan .cua a,.app-chan .cua .sap{display:inline-flex;align-items:center;gap:5px;background:#000;color:#fff;border:1px solid rgba(255,255,255,.3);border-radius:8px;padding:4px 9px;font-size:13px;font-weight:700;text-decoration:none}
.app-chan .cua .sap{opacity:.6}
.app-chan .cua svg{width:15px;height:15px}
.day-chan{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:14px;margin-top:22px;padding-top:16px;padding-bottom:22px;border-top:1px solid rgba(255,255,255,.14);font-size:13.5px;color:#8fa0b8;text-align:center}
.day-chan img{display:block;width:150px;height:auto}
@media(max-width:860px){.chan{grid-template-columns:1fr}.day-chan{flex-direction:column;gap:8px}}