/* 2. Header, mobile menu, search dialog, footer. */
.dau { position: sticky; top: 0; z-index: 30; display: flex; align-items: center; gap: 20px; padding: 12px var(--le); background: var(--mat); border-bottom: 1px solid var(--ke); }
.admin-bar .dau { top: 32px; }
.logo { font: 700 23px/1 var(--de); color: var(--reu); letter-spacing: -.01em; white-space: nowrap; text-decoration: none; }
.logo b { color: var(--nghe); font-weight: 700; }
.menu { display: flex; gap: 18px; font-weight: 600; font-size: 14px; }
.menu a { color: var(--muc2); text-decoration: none; }
.menu a:hover, .menu-luc:hover { color: var(--reu); }
.menu-luc { background: none; border: 0; padding: 0; font: 600 14px var(--than); color: var(--muc2); cursor: pointer; }
.tim { margin-left: auto; display: flex; align-items: center; gap: 8px; border: 1px solid var(--ke); border-radius: 999px; padding: 8px 14px; color: var(--muc2); font: 14px var(--than); min-width: 240px; background: var(--giay); cursor: pointer; text-align: left; }
.nut-vuong { display: none; width: 40px; height: 40px; border: 1px solid var(--ke); border-radius: 8px; place-items: center; color: var(--muc2); background: var(--mat); font-size: 18px; cursor: pointer; }
.menu-dt { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px var(--le); background: var(--mat); border-bottom: 1px solid var(--ke); }
.menu-dt a { border: 1px solid var(--ke); border-radius: 999px; padding: 6px 12px; font-size: 14px; color: var(--muc); text-decoration: none; }
.tim-hop { border: 1px solid var(--ke); border-radius: 14px; padding: 20px; width: min(560px, calc(100vw - 32px)); background: var(--mat); color: var(--muc); }
.tim-hop::backdrop { background: rgba(10, 16, 12, .45); }
.tim-hop form { display: flex; flex-wrap: wrap; gap: 10px; }
.tim-hop label { width: 100%; font: 600 20px var(--de); }
.tim-hop input { flex: 1 1 100%; font: 16px var(--than); padding: 12px 14px; border: 2px solid var(--reu); border-radius: 10px; background: var(--giay); color: var(--muc); }

.chan { background: #24392D; color: #DCE7E0; margin-top: 72px; }
.chan-trong { max-width: var(--khung); margin: 0 auto; padding: 40px var(--le) 20px; display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; }
.chan-cot { display: flex; flex-direction: column; gap: 6px; font-size: 14px; }
.chan-cot b { font: 700 22px var(--de); color: #fff; }
.chan-cot b span { color: var(--nghe); }
.chan-cot p { margin: 4px 0 0; max-width: 34ch; }
.chan-cot h2 { font: 700 12px var(--than); letter-spacing: .1em; text-transform: uppercase; color: #F0CF7A; margin: 0 0 4px; }
.chan-cot a { color: #DCE7E0; text-decoration: none; }
.chan-cot a:hover { color: #fff; text-decoration: underline; }
.chan-cuoi { max-width: var(--khung); margin: 0 auto; padding: 14px var(--le) 24px; border-top: 1px solid #3A5144; font-size: 13px; color: #A9BDB1; }