/* Diễn đàn Doanh Nhân - tông xanh navy, cam */
:root{--navy:#17233f;--navy2:#1e3a6b;--orange:#f58220;--ink:#222;--muted:#666;--line:#e3e6ec;--bg:#f4f5f7}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Roboto,Helvetica,sans-serif;color:var(--ink);background:#fff;line-height:1.6}
a{color:var(--navy2);text-decoration:none}
a:hover{color:var(--orange)}
img{max-width:100%;height:auto}
.container{max-width:1180px;margin:0 auto;padding:0 16px}
.site-header{background:#fff;border-bottom:1px solid var(--line)}
.header-inner{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:14px 16px;flex-wrap:wrap}
.logo img{height:64px;width:auto}
.logo-text{font-size:22px;color:var(--navy);line-height:1.1}
.header-right{text-align:right}
.header-search{margin-top:8px;display:flex;gap:6px;justify-content:flex-end}
.header-search input{padding:8px;border:1px solid var(--line);border-radius:4px;min-width:200px}
.header-search button,.btn,button[type=submit]{background:var(--navy);color:#fff;border:0;padding:8px 14px;border-radius:4px;cursor:pointer}
.header-search button:hover,.btn:hover{background:var(--orange)}
.main-nav{background:var(--navy);overflow-x:auto;white-space:nowrap}
.main-nav .container{display:flex;gap:0}
.main-nav a{display:inline-block;color:#fff;font-weight:bold;text-transform:uppercase;font-size:13px;padding:11px 12px}
.main-nav a.active,.main-nav a:hover{background:var(--orange);color:#fff}
.ticker-bar{background:#eee;border-bottom:1px solid var(--line);overflow:hidden}
.ticker-inner{display:flex;gap:14px;align-items:center;padding:8px 16px}
.ticker-label{background:var(--orange);color:#fff;font-weight:bold;padding:4px 10px;border-radius:3px;white-space:nowrap}
.ticker-track{flex:1;overflow:hidden;white-space:nowrap}
.ticker-scroll{display:inline-flex;gap:36px;white-space:nowrap;animation:ticker-scroll 46s linear infinite}
.ticker-scroll a{color:var(--ink)}
.ticker-bar:hover .ticker-scroll{animation-play-state:paused}
@keyframes ticker-scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.ticker-mobile{display:none;flex:1;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;color:var(--ink)}
@media(max-width:680px){.tk-view{display:none}.ticker-mobile{display:block}}
.ticker-date{white-space:nowrap;color:var(--muted);font-size:13px}
.main-wrap{display:flex;gap:24px;padding:20px 16px;align-items:flex-start}
.content{flex:1;min-width:0}
.sidebar{width:320px;flex-shrink:0}
@media(max-width:900px){.main-wrap{flex-direction:column}.sidebar{width:100%}.header-right{text-align:left}.ticker-date{display:none}}
.section-title{font-size:22px;text-transform:uppercase;border-top:4px solid var(--navy);border-bottom:1px solid var(--line);padding:10px 0;margin:26px 0 16px}
.section-title a{float:right;font-size:14px;text-transform:none}
.slider{display:grid;grid-template-columns:2fr 1fr;gap:14px}
.slider-main{position:relative}
.slider-main img,.slider-small img{width:100%;height:100%;object-fit:cover;display:block}
.slider-main img{height:360px}
.slider-small{display:grid;gap:14px}
.slider-small a{position:relative;display:block;height:173px;overflow:hidden}
.slide-caption{position:absolute;left:0;right:0;bottom:0;background:rgba(0,0,0,.65);color:#fff;padding:10px}
.slide-caption h2,.slide-caption h3{margin:0;font-size:17px;line-height:1.4}
.slider-main .slide-caption h2{font-size:22px}
.feature-row{display:grid;grid-template-columns:1.6fr 1fr;gap:20px}
.feature-main img{width:100%;height:260px;object-fit:cover}
.post-small{display:flex;gap:12px;margin-bottom:14px}
.post-small img{width:110px;height:80px;object-fit:cover;flex-shrink:0}
.post-small h3{margin:0 0 4px;font-size:15px;line-height:1.4}
.post-small p{margin:4px 0 0;color:var(--muted);font-size:13px}
.cat-tag{font-size:12px;font-weight:bold;color:var(--orange);text-transform:uppercase}
.post-date{font-size:12px;color:var(--muted)}
.cat-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.cat-main img{width:100%;height:220px;object-fit:cover}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.side-box{border:1px solid var(--line);padding:14px;margin-bottom:20px}
.side-title{text-transform:uppercase;border-bottom:3px solid var(--navy);padding-bottom:8px;margin:0 0 12px}
.side-list{list-style:disc;padding-left:20px;margin:0}
.side-list li{margin-bottom:10px}
.newsletter-box input[type=email]{width:100%;padding:9px;border:1px solid var(--line);margin-bottom:8px}
.newsletter-box button{width:100%}
.small{font-size:13px;color:var(--muted)}
.alert{background:#fff3cd;border:1px solid #ffe08a;padding:10px 12px;border-radius:4px;margin:12px 0}
.alert-success{background:#e6f4ea;border-color:#a3d9a5}
.breadcrumb{color:var(--muted);font-size:14px;text-transform:uppercase}
.breadcrumb a{color:var(--navy2)}
.article h1{font-size:30px;line-height:1.35}
.article-meta{color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:10px}
.article-sapo{font-weight:bold;font-size:18px;line-height:1.6}
.article-body img{max-width:100%}
.article-body figure{text-align:center;margin:16px 0}
.article-body figcaption{font-size:13px;color:var(--muted)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:700px){.related-grid,.cat-grid,.two-col,.feature-row,.slider{grid-template-columns:1fr}.slider-main img{height:240px}}
.post-list-item{display:flex;gap:16px;border-bottom:1px solid var(--line);padding:16px 0}
.post-list-item img{width:220px;height:150px;object-fit:cover;flex-shrink:0}
@media(max-width:600px){.post-list-item{flex-direction:column}.post-list-item img{width:100%}}
.pagination{margin:20px 0;display:flex;gap:6px;flex-wrap:wrap}
.pagination a,.pagination span{border:1px solid var(--line);padding:6px 12px;border-radius:4px}
.pagination span.current{background:var(--navy);color:#fff}
.form-group{margin-bottom:14px}
.form-group label{display:block;font-weight:bold;margin-bottom:4px}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:9px;border:1px solid var(--line);border-radius:4px}
.site-footer{background:var(--navy);color:#dbe2ec;margin-top:30px}
.site-footer h4{color:#fff;text-transform:uppercase;font-size:15px;margin:0 0 12px}
.site-footer a{color:#dbe2ec}
.site-footer a:hover{color:var(--orange)}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:24px;padding:30px 16px}
@media(max-width:800px){.footer-grid{grid-template-columns:1fr}}
.footer-logo{height:52px}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:8px}
.footer-bottom{background:var(--navy);border-top:1px solid rgba(255,255,255,.15);color:#fff;padding:12px 0;font-size:13px}
.footer-bottom p{margin:0}
.back-to-top{position:fixed;right:18px;bottom:18px;background:var(--orange);color:#fff;width:42px;height:42px;line-height:42px;text-align:center;border-radius:50%;display:none}
.back-to-top.show{display:block}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
/* Mobile: logo trái, thanh tìm kiếm phải, gọn và cân đối cùng 1 hàng */
@media(max-width:600px){
  .header-inner{flex-wrap:nowrap;gap:10px;padding:10px 12px;align-items:center}
  .logo{flex-shrink:0}
  .logo img{height:44px}
  .header-right{flex:1;min-width:0;text-align:right}
  .header-search{margin-top:0;gap:4px;flex-wrap:nowrap;justify-content:flex-end;align-items:center}
  .header-search input{min-width:0;flex:1;max-width:130px;padding:7px 8px;font-size:14px}
  .header-search button{padding:7px 10px;font-size:14px;white-space:nowrap;flex-shrink:0}
}
@media(max-width:360px){
  .logo img{height:40px}
  .header-search input{max-width:90px;padding:6px 7px;font-size:13px}
  .header-search button{padding:6px 8px;font-size:13px}
}

/* Mobile menu kiểu phutungtlm: nút burger + panel trượt từ trái, màu tin tức navy-cam. Thanh tìm kiếm giữ nguyên như bản demo hiện tại, không đổi. */
.burger{display:none;background:var(--navy);color:#fff;border:none;border-radius:6px;padding:9px 11px;cursor:pointer;flex:none}
.burger svg{width:20px;height:20px;display:block}
.m-drawer{position:fixed;top:0;left:0;width:300px;max-width:84vw;height:100dvh;background:var(--navy);color:#fff;z-index:1001;transform:translateX(-105%);transition:transform .3s ease;display:flex;flex-direction:column;box-shadow:2px 0 18px rgba(0,0,0,.35)}
.m-drawer.open{transform:none}
.m-overlay{position:fixed;inset:0;background:rgba(10,20,35,.55);z-index:1000;opacity:0;pointer-events:none;transition:opacity .3s}
.m-overlay.open{opacity:1;pointer-events:auto}
.m-drawer-head{display:flex;align-items:center;justify-content:space-between;padding:15px 18px;border-bottom:1px solid rgba(255,255,255,.12)}
.m-drawer-head strong{font-size:19px;letter-spacing:.5px;color:#fff}
.m-close{background:var(--orange);color:#fff;border:none;width:34px;height:34px;border-radius:6px;font-size:16px;cursor:pointer;line-height:1}
.m-nav{overflow-y:auto;padding:6px 0 16px}
.m-nav a{display:flex;align-items:center;color:#fff;text-decoration:none;padding:13px 18px;font-size:15.5px;border-bottom:1px solid rgba(255,255,255,.08)}
.m-nav a:hover{background:rgba(255,255,255,.08)}
.m-nav a.m-active{background:var(--orange);color:#fff}
body.m-lock{overflow:hidden}
@media(max-width:900px){.main-nav{display:none}.burger{display:inline-flex;align-items:center}.header-inner{flex-wrap:nowrap}}

/* Thanh trên cùng: ngày + thời tiết + Giới thiệu / Liên hệ / Đặt quảng cáo */
.topbar{background:var(--navy);color:#fff;font-size:13px}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:6px 0;flex-wrap:wrap}
.topbar-weather{margin-left:0}
.topbar-links{display:flex;gap:16px}
.topbar-links a{color:#fff}
.topbar-links a:hover{color:var(--orange)}
@media(max-width:600px){.topbar-inner{flex-direction:column;align-items:center;text-align:center;gap:4px}.topbar-left{width:100%;text-align:center}.topbar-links{width:100%;justify-content:center}}

/* Đoạn giới thiệu trang chủ: tên trang + slogan */
.site-slogan{text-align:center;padding:18px 12px 16px;border-bottom:1px solid var(--line);margin-bottom:8px}
.site-slogan h2{margin:0;color:var(--navy);font-size:28px;text-transform:uppercase}
.site-slogan h2::after{display:block;content:"";width:60px;height:3px;background:var(--orange);margin:10px auto 0}
.site-slogan p{margin:10px 0 0;color:var(--muted);font-size:16px}
@media(max-width:600px){.site-slogan h2{font-size:22px}.site-slogan p{font-size:15px}}

/* Đoạn giới thiệu ở trên cùng trang chủ, trải rộng cả trang, căn giữa */
.site-slogan-top{text-align:center;padding:20px 16px 16px;border-bottom:1px solid var(--line)}
.site-slogan-top h2{margin:0;color:var(--navy);font-size:28px;text-transform:uppercase}
.site-slogan-top h2::after{display:block;content:"";width:60px;height:3px;background:var(--orange);margin:10px auto 0}
.site-slogan-top p{margin:10px 0 0;color:var(--muted);font-size:16px}
@media(max-width:600px){.site-slogan-top h2{font-size:22px}.site-slogan-top p{font-size:15px}}

/* Slogan bên phải đầu trang, cạnh logo, như ảnh mẫu */
.header-right{text-align:right}
.header-right .header-search{margin-top:8px}
@media(max-width:900px){.header-slogan{display:none}}

/* Khung slogan ở giữa trang chủ, như ảnh mẫu */
.slogan-box{background:#f4f4f4;border:1px solid var(--line);border-radius:8px;padding:18px 16px;text-align:center;margin:16px 0}
.slogan-box strong{display:block;color:var(--navy);font-size:20px;text-transform:uppercase}
.slogan-box span{display:block;color:var(--navy);font-size:15px;font-weight:700;margin-top:6px}
@media(max-width:600px){.slogan-box strong{font-size:18px}.slogan-box span{font-size:14px}}

/* Khung slogan nhỏ ở giữa logo và ô tìm kiếm */
.slogan-box-header{flex:1;max-width:520px;margin:0 auto;background:#f4f4f4;border:1px solid var(--line);border-radius:8px;padding:10px 14px;text-align:center}
.slogan-box-header strong{display:block;color:var(--navy);font-size:16px;text-transform:uppercase}
.slogan-box-header span{display:block;color:var(--navy);font-size:14px;font-weight:700;margin-top:4px}
@media(max-width:900px){.slogan-box-header{display:none}}

/* Mobile: khung slogan hiện ở hàng dưới, căn giữa, không ẩn nữa */
@media(max-width:900px){
  .header-inner{flex-wrap:wrap}
  .slogan-box-header{display:block;order:3;flex-basis:100%;max-width:none;margin:6px 0 0;padding:8px 12px}
  .slogan-box-header strong{font-size:15px}
  .slogan-box-header span{font-size:13px}
}