/* ===== Thư viện xóm Niiza – kiểu dáng chung ===== */
:root{
  --bg:#FFF8EC; --ink:#3B2F2F; --muted:#7A6A5F;
  --red:#FF6B6B; --orange:#FFA94D; --yellow:#FFD43B; --green:#51CF66;
  --blue:#4DABF7; --purple:#9775FA; --pink:#F783AC; --card:#FFFFFF;
  --nav-h:64px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Baloo 2',system-ui,sans-serif;color:var(--ink);font-size:18px;line-height:1.5;
  background:var(--bg) radial-gradient(#FFE3B3 1.5px,transparent 1.5px) 0 0/22px 22px;}
img{max-width:100%}
a{color:inherit}

/* ---------- Thanh menu ---------- */
.topbar{position:sticky;top:0;z-index:30;background:#fff;box-shadow:0 4px 0 #F1E4CF}
.topbar-in{max-width:1200px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;gap:12px}
.logo{display:flex;align-items:center;gap:8px;text-decoration:none;font-weight:800;font-size:22px;white-space:nowrap}
.logo span{font-size:28px}
.nav{margin-left:auto;display:flex;gap:6px;flex-wrap:wrap}
.nav a{text-decoration:none;font-weight:700;font-size:17px;padding:6px 14px;border-radius:999px;transition:background .15s}
.nav a:hover{background:#FFF3BF}
.nav a.active{background:var(--ink);color:#fff}
.dd{position:relative;display:flex;align-items:center}
.dd-btn{display:inline-block}
.dd .caret{font-size:13px}
.dd-menu{display:none;position:absolute;top:calc(100% + 6px);left:50%;transform:translateX(-50%);min-width:250px;
  background:#fff;border-radius:20px;padding:8px;box-shadow:0 10px 28px rgba(0,0,0,.14);border:3px solid var(--yellow);z-index:40}
.dd-menu::before{content:"";position:absolute;top:-12px;left:0;right:0;height:12px} /* cầu nối để rê chuột không bị mất menu */
.dd:hover .dd-menu,.dd:focus-within .dd-menu{display:block}
.dd-menu a{display:block;text-decoration:none;font-weight:700;font-size:17px;padding:7px 14px;border-radius:12px;white-space:nowrap}
.dd-menu a:hover,.dd-menu a.on{background:#FFF3BF}
.menu-btn{display:none;margin-left:auto;border:0;background:#FFF3BF;border-radius:14px;font:inherit;font-size:24px;
  width:46px;height:46px;cursor:pointer}
@media (max-width:760px){
  .menu-btn{display:block}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;flex-direction:column;
    padding:8px 16px 14px;box-shadow:0 8px 16px rgba(0,0,0,.08)}
  .nav.open{display:flex}
  .nav a{font-size:19px;padding:10px 16px}
  .dd-btn{display:block}
  .dd .caret{display:none}
  .dd-menu{display:block;position:static;transform:none;box-shadow:none;border:0;min-width:0;padding:0 0 4px 16px}
  .dd-menu::before{display:none}
  .dd-menu a{font-size:17px;padding:6px 14px;color:var(--muted)}
}

/* ---------- Banner ---------- */
.banner{position:relative;background:#fff}
.banner img{display:block;width:100%;height:auto} /* hiện nguyên ảnh, không cắt chữ */
.banner.loading{min-height:120px}
.banner-fallback{display:none;min-height:220px;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:30px 16px;background:linear-gradient(120deg,#FFE8CC,#FFF3BF 45%,#D0EBFF);
  overflow:hidden;position:relative}
.banner.nobanner .banner-fallback{display:flex}
.banner-fallback .small{letter-spacing:.2em;font-weight:700;font-size:clamp(14px,2.4vw,20px);text-transform:uppercase}
.banner-fallback h1{margin:0;font-size:clamp(36px,7vw,72px);font-weight:800;line-height:1.05}
.banner-fallback p{margin:6px 0 0;font-size:clamp(16px,2.4vw,22px)}
.banner-fallback .deco{position:absolute;font-size:clamp(34px,6vw,64px);opacity:.9}

/* ---------- Khung nội dung chung ---------- */
.page{max-width:1100px;margin:0 auto;padding:32px 16px 60px}
.section{margin:0 0 48px}
.section h2{font-size:clamp(26px,4vw,36px);margin:0 0 16px;text-align:center;line-height:1.15}
.lead{text-align:center;color:var(--muted);max-width:680px;margin:-6px auto 24px}
.box{background:#fff;border-radius:26px;padding:22px;box-shadow:0 6px 0 #EADBC4}
.btn{display:inline-block;font:inherit;font-size:19px;font-weight:800;text-decoration:none;
  border:0;border-radius:999px;padding:10px 24px;cursor:pointer}
.btn-green{background:var(--green);color:#fff;box-shadow:0 4px 0 #2F9E44}
.btn-orange{background:var(--orange);color:#fff;box-shadow:0 4px 0 #E8590C}
.center{text-align:center}
/* Chỗ cần bạn điền nội dung – xóa class "todo" sau khi sửa */
.todo{background:#FFF3BF;outline:2px dashed #FAB005;border-radius:6px;padding:0 4px}

/* ---------- Chân trang ---------- */
.footer{background:#fff;text-align:center;padding:22px 16px;color:var(--muted);font-size:16px;
  box-shadow:0 -4px 0 #F1E4CF}
.footer b{color:var(--ink)}