.kk { padding:64px 0 70px; background: #F1F1F1; }
/* Tiêu đề chuẩn trang chủ: căn lề trái (khớp mép rail + như "Hành trình"), H2 đậm màu text chính. */
.kk-head { text-align:left; margin-bottom:30px; padding:0 64px; }
.kk-head .sec-title { font-size:clamp(32px,3.6vw,44px); color:var(--text); font-weight:800; }
.kk-head .sec-sub { margin:10px 0 0; max-width:780px; }

/* HÀNG THẺ DỌC vuốt ngang */
.kk-rail { display:flex; gap:14px; overflow-x:auto; padding:6px 64px 16px; scroll-snap-type:x mandatory; scrollbar-width:none; }
.kk-rail::-webkit-scrollbar { display:none; }
.kk-card { flex:0 0 auto; width:212px; aspect-ratio:9/16; border-radius:18px; overflow:hidden; position:relative; cursor:pointer; scroll-snap-align:start; box-shadow:var(--sh-s); background:#000; }
.kk-card img { width:100%; height:100%; object-fit:cover; transition:transform .45s; }
.kk-card:hover img { transform:scale(1.06); }
.kk-card::after { content:''; position:absolute; inset:0; background:linear-gradient(180deg, rgba(0,0,0,.25) 0%, rgba(0,0,0,0) 30%, rgba(0,0,0,0) 55%, rgba(0,0,0,.82)); }
.kk-play { position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); z-index:2; width:54px; height:54px; border-radius:50%; background:rgba(255,255,255,.92); display:grid; place-items:center; }
.kk-play::after { content:''; border-style:solid; border-width:9px 0 9px 15px; border-color:transparent transparent transparent #111; margin-left:4px; }
.kk-views { position:absolute; top:12px; left:12px; z-index:2; color:#fff; font-size:11.5px; font-weight:700; display:flex; align-items:center; gap:5px; text-shadow:0 1px 4px rgba(0,0,0,.6); }
.kk-meta { position:absolute; left:13px; right:13px; bottom:13px; z-index:2; color:#fff; }
.kk-meta .h { font-size:12px; font-weight:700; opacity:.95; }
.kk-meta .c { font-size:12.5px; line-height:1.3; margin-top:3px; text-shadow:0 1px 5px rgba(0,0,0,.5);
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }

/* VIEWER toàn màn hình kiểu TikTok */
.ttv { position:fixed; inset:0; background:rgba(0,0,0,.95); z-index:999; display:none; align-items:center; justify-content:center; }
.ttv.open { display:flex; }
.ttv-stage { position:relative; height:88vh; aspect-ratio:9/16; max-width:94vw; border-radius:16px; overflow:hidden; background:#000; box-shadow:0 24px 70px rgba(0,0,0,.6); }
.ttv-stage img { width:100%; height:100%; object-fit:cover; }
.ttv-stage::after { content:''; position:absolute; inset:0; background:linear-gradient(180deg, rgba(0,0,0,.3) 0%, transparent 22%, transparent 60%, rgba(0,0,0,.8)); }
.ttv-bigplay { position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); z-index:2; width:74px; height:74px; border-radius:50%; background:rgba(255,255,255,.9); display:grid; place-items:center; }
.ttv-bigplay::after { content:''; border-style:solid; border-width:12px 0 12px 20px; border-color:transparent transparent transparent #111; margin-left:5px; }
.ttv-meta { position:absolute; left:18px; right:18px; bottom:22px; z-index:3; color:#fff; }
.ttv-meta .h { font-size:15px; font-weight:800; }
.ttv-meta .c { font-size:14px; line-height:1.4; margin-top:6px; }
.ttv-meta .m { font-size:12.5px; margin-top:9px; opacity:.85; display:flex; align-items:center; gap:7px; }
.ttv-close { position:absolute; top:20px; right:24px; z-index:4; color:#fff; font-size:26px; cursor:pointer; width:44px; height:44px; display:grid; place-items:center; border-radius:50%; background:rgba(255,255,255,.14); }
.ttv-nav { position:absolute; right:-64px; top:50%; transform:translateY(-50%); display:flex; flex-direction:column; gap:14px; }
.ttv-nav div { width:48px; height:48px; border-radius:50%; background:rgba(255,255,255,.14); color:#fff; display:grid; place-items:center; font-size:22px; cursor:pointer; }
.ttv-nav div:hover { background:var(--red); }

@media (max-width:920px){
  .kk-head { padding-left:20px; padding-right:20px; }
  .kk-rail { padding-left:20px; padding-right:20px; }
  .kk-card { width:62vw; max-width:240px; }
  .ttv-nav { right:8px; }
}