/* ---- p_38_bl-travel.css ---- */
/* =====================================================================
   TRAVEL EXPERIENCE (.sk-bt) - nhật ký hành trình: vé và hộ chiếu.
   Hình khối: giấy vé trắng có răng cưa (mask), đường xé nét đứt, mã vạch, con dấu tròn/chữ nhật.
   Hệ màu: nền giấy #f5f4f1, vé trắng, chữ đen, nhấn cam #ff6a13 (+ xám). Một font Be Vietnam Pro; Anton chỉ cho mã sân bay và số thẻ (.s-art).
   Mobile trước; mở rộng ở 700px và 1000/1025px.
   ===================================================================== */
.sk-bt{--bg:#f5f4f1;--bg2:#ebeae6;--card:#fff;--ink:#0a0a0c;--mut:#55555e;--ln:rgba(10,10,12,.16);--ac:#ff6a13;--ac2:#ff8c42;--aci:#0a0a0c;--r:12px;--bw:1px;--hfw:800;--hls:-.04em;--tear:rgba(10,10,12,.3)}
.sk-bt h2,.sk-bt h3{margin:0}
.sk-bt button{-webkit-tap-highlight-color:transparent;touch-action:manipulation}
.sk-bt :focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.bt-defs{position:absolute;width:0;height:0;overflow:hidden}
.sk-bt .btn-g{border-width:1.5px}

/* ---------- đầu mục: chip số vé có hai nốt cắt ---------- */
.sk-bt .bt-no{display:flex;align-items:center;gap:10px;margin:0 0 14px;font:700 12px/1 var(--fb);letter-spacing:.16em;text-transform:uppercase;color:var(--mut)}
.bt-no b{display:grid;place-items:center;min-width:38px;height:26px;padding:0 10px;background:var(--ink);color:#fff;font-weight:800;letter-spacing:.08em;
  -webkit-mask:radial-gradient(circle 4.5px at 0 50%,#0000 4px,#000 4.5px) left/51% 100% no-repeat,radial-gradient(circle 4.5px at 100% 50%,#0000 4px,#000 4.5px) right/51% 100% no-repeat;
  mask:radial-gradient(circle 4.5px at 0 50%,#0000 4px,#000 4.5px) left/51% 100% no-repeat,radial-gradient(circle 4.5px at 100% 50%,#0000 4px,#000 4.5px) right/51% 100% no-repeat}
.sk-bt .bt-h{font-size:clamp(30px,8.2vw,62px);line-height:1.1;text-wrap:balance}
.sk-bt .s-head{margin-bottom:clamp(20px,4vw,44px)}
.sk-bt .s-sec{padding:clamp(34px,8vw,108px) 0}
.sk-bt .s-lead{font-size:16px;max-width:60ch}

/* ---------- máy bay bay dọc lề trái theo tiến độ cuộn ---------- */
.bt-trk{position:absolute;z-index:3;left:2px;top:0;bottom:0;width:18px;pointer-events:none;--pin:0}
.bt-trk::before{content:"";position:absolute;left:8px;top:92px;bottom:0;border-left:2px dashed rgba(255,106,19,.5)}
.bt-trk-in{position:sticky;top:84px;height:calc(100vh - 110px);height:calc(100svh - 110px)}
.bt-trk-pl{position:absolute;left:0;top:calc(var(--pin)*(100% - 18px));width:18px;height:18px;fill:var(--ac);transform:rotate(135deg);filter:drop-shadow(0 1px 1px rgba(10,10,12,.4))}
@media(prefers-reduced-motion:reduce){.bt-trk{display:none}}

/* =====================  1 · HERO: BOARDING PASS  ===================== */
.bt-hero{padding-top:98px;padding-bottom:clamp(32px,6vw,72px)}
.bt-hero::before{content:"";position:absolute;inset:0 0 auto;height:calc(79px + env(safe-area-inset-top,0px));background:#0a0a0c;z-index:-1}
.bt-hero::after{content:"";position:absolute;inset:79px 0 0;z-index:-1;pointer-events:none;
  background:radial-gradient(60% 34% at 92% 6%,rgba(255,106,19,.2),transparent 72%),radial-gradient(rgba(10,10,12,.12) 1px,transparent 1.6px) 0 0/18px 18px;
  -webkit-mask-image:linear-gradient(180deg,#000 38%,transparent);mask-image:linear-gradient(180deg,#000 38%,transparent)}
.bt-hg{display:flex;flex-direction:column;min-width:0}
.bt-hc{display:contents}
.bt-hg>*,.bt-hc>*{min-width:0}
.sk-bt .s-crumb{order:0;margin-bottom:16px}
.sk-bt .bt-kick{order:1;display:flex;align-items:center;gap:10px;margin:0 0 12px;font:700 12px/1.3 var(--fb);letter-spacing:.16em;text-transform:uppercase;color:var(--mut)}
.bt-kd{flex:none;width:9px;height:9px;border-radius:50%;background:var(--ac)}
.sk-bt .bt-title{order:2;margin:0;font-size:clamp(50px,14.6vw,150px);line-height:.94;letter-spacing:-.05em;font-weight:800;text-transform:none}
.bt-title .s-ml{padding-right:.1em}
.bt-ti{display:inline-block;width:.46em;height:.46em;margin-left:.14em;vertical-align:.1em;fill:var(--ac)}
.sk-bt .bt-sub{order:5;max-width:46ch;margin-top:18px;font-size:16px;line-height:1.6;color:var(--mut)}
.sk-bt .bt-btns{order:4;margin-top:18px}

/* thẻ lên máy bay: dọc ở mọi cỡ (kiểu ví điện tử) - thân vé, cuống có mã vạch, trang hộ chiếu */
.bt-pw{order:3;position:relative;width:min(100%,520px);margin-top:clamp(18px,4vw,26px)}
.bt-pass{--nr:10px;position:relative;display:flex;flex-direction:column;filter:drop-shadow(0 22px 24px rgba(10,10,12,.17)) drop-shadow(0 2px 2px rgba(10,10,12,.1))}
.bt-pm{padding:14px 16px 16px;background:#fff;border-radius:16px 16px 0 0;
  -webkit-mask:radial-gradient(circle var(--nr) at 0 100%,#0000 calc(var(--nr) - .5px),#000 var(--nr)) left/51% 100% no-repeat,radial-gradient(circle var(--nr) at 100% 100%,#0000 calc(var(--nr) - .5px),#000 var(--nr)) right/51% 100% no-repeat;
  mask:radial-gradient(circle var(--nr) at 0 100%,#0000 calc(var(--nr) - .5px),#000 var(--nr)) left/51% 100% no-repeat,radial-gradient(circle var(--nr) at 100% 100%,#0000 calc(var(--nr) - .5px),#000 var(--nr)) right/51% 100% no-repeat}
.bt-ph{display:flex;align-items:center;justify-content:space-between;gap:10px;font:600 12px/1.2 var(--fb);letter-spacing:.14em;text-transform:uppercase;color:var(--mut)}
.bt-ph b{color:var(--ink);font-weight:800}
.bt-ph i{flex:none;padding:4px 8px;border:1.5px solid var(--ac);border-radius:4px;color:var(--ac);font-style:normal;font-weight:800;letter-spacing:.14em}
.bt-rt{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:start;gap:8px;margin-top:12px}
.bt-ap b{display:block;font-size:clamp(44px,14vw,66px);line-height:1;letter-spacing:.01em;color:var(--ink)}
.bt-ap span{display:block;margin-top:2px;font:600 13px/1.2 var(--fb);color:var(--mut)}
.bt-ap.bt-r{text-align:right}
.bt-ln{position:relative;height:24px;margin-top:clamp(14px,4vw,24px);color:var(--ac)}
.bt-ln::before{content:"";position:absolute;left:5px;right:5px;top:50%;border-top:2px dashed currentColor;opacity:.8}
.bt-ln::after{content:"";position:absolute;inset:0;background:radial-gradient(circle,currentColor 0 3.4px,transparent 4px) left center/8px 8px no-repeat,radial-gradient(circle,currentColor 0 3.4px,transparent 4px) right center/8px 8px no-repeat}
.bt-pl{position:absolute;z-index:1;left:calc(50% - 13px);top:50%;width:26px;height:26px;margin-top:-13px;fill:currentColor;transform:rotate(45deg)}
.bt-fs{display:grid;grid-template-columns:1.9fr 1fr 1fr;gap:10px;margin:12px 0 0;padding-top:10px;border-top:1px solid var(--ln)}
.bt-fs>div{min-width:0}
.bt-fs dt{font:600 12px/1.2 var(--fb);letter-spacing:.08em;text-transform:uppercase;color:var(--mut)}
.bt-fs dd{margin:3px 0 0;font:800 14px/1.25 var(--fb);letter-spacing:.02em;overflow-wrap:anywhere}
.bt-pt{position:relative;display:flex;align-items:center;gap:14px;padding:14px 16px 12px;background:#fff;
  -webkit-mask:radial-gradient(circle var(--nr) at 0 0,#0000 calc(var(--nr) - .5px),#000 var(--nr)) left/51% 100% no-repeat,radial-gradient(circle var(--nr) at 100% 0,#0000 calc(var(--nr) - .5px),#000 var(--nr)) right/51% 100% no-repeat;
  mask:radial-gradient(circle var(--nr) at 0 0,#0000 calc(var(--nr) - .5px),#000 var(--nr)) left/51% 100% no-repeat,radial-gradient(circle var(--nr) at 100% 0,#0000 calc(var(--nr) - .5px),#000 var(--nr)) right/51% 100% no-repeat}
.bt-pt::before{content:"";position:absolute;left:calc(var(--nr) + 8px);right:calc(var(--nr) + 8px);top:0;border-top:2px dashed var(--tear)}
.bt-bw{position:relative;flex:1.15;min-width:0;height:38px;overflow:hidden}
.bt-bar{display:block;width:100%;height:100%;fill:var(--ink)}
.bt-bw::after{content:"";position:absolute;top:0;bottom:0;left:0;width:3px;background:var(--ac);box-shadow:0 0 12px 2px rgba(255,106,19,.6);opacity:0}
.sk-bt .bt-pt p{flex:1;min-width:0;font:500 12px/1.45 var(--fb);color:var(--mut)}
.bt-pt p b{display:block;color:var(--ink);font:800 15px/1.3 var(--fb);letter-spacing:.02em}
.bt-pp{padding:6px 16px 16px;border-radius:0 0 16px 16px;background-color:color-mix(in srgb,var(--ac) 7%,#fff);background-image:repeating-linear-gradient(0deg,transparent 0 13px,rgba(10,10,12,.06) 13px 14px)}
.bt-pph{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:46px}
.bt-pph span{font:600 12px/1.25 var(--fb);letter-spacing:.12em;text-transform:uppercase;color:var(--mut)}
.bt-rs{flex:none;display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:0 14px;border:1.5px solid var(--ink);border-radius:99px;background:transparent;color:var(--ink);font:700 12px/1 var(--fb);letter-spacing:.06em;text-transform:uppercase;cursor:pointer;transition:background .25s,color .25s}
.bt-rs svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.bt-rs:active{background:var(--ink);color:#fff}
.bt-sts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:4px;margin-top:2px}
.bt-st{display:block;aspect-ratio:1;color:var(--ink);transform:rotate(var(--rot,0deg));mix-blend-mode:multiply;opacity:.93}
.bt-st.bt-o{color:var(--ac)}
.bt-st svg{display:block;width:100%;height:100%;overflow:visible}

/* chuyển động hero: máy bay bay qua đường nét đứt, tia quét mã vạch, con dấu đóng xuống và rung nhẹ */
@media(prefers-reduced-motion:no-preference){
  .kx-js .bt-pl{animation:btFly 5.8s cubic-bezier(.45,0,.35,1) infinite}
  .kx-js .bt-bw::after{animation:btScan 3.6s ease-in-out infinite}
  .kx-js .bt-kd{animation:btPulse 1.9s ease-out infinite}
  .kx-js .bt-pass.is-arm .bt-st:not(.is-on){opacity:0}
  .kx-js .bt-st.is-on{animation:btStamp .64s cubic-bezier(.2,.9,.3,1) both}
  .kx-js .bt-pass.is-thud{animation:btThud .3s ease-out}
}
@keyframes btFly{0%{left:0;top:62%;opacity:0}8%{opacity:1}50%{left:calc(50% - 13px);top:34%}92%{opacity:1}100%{left:calc(100% - 26px);top:62%;opacity:0}}
@keyframes btScan{0%,100%{left:0;opacity:0}12%{opacity:1}88%{opacity:1}50%{left:calc(100% - 3px)}}
@keyframes btPulse{0%{box-shadow:0 0 0 0 rgba(255,106,19,.6)}100%{box-shadow:0 0 0 12px rgba(255,106,19,0)}}
@keyframes btStamp{0%{opacity:0;transform:translateY(-34px) rotate(calc(var(--rot) - 18deg)) scale(1.9)}50%{opacity:.95;transform:rotate(var(--rot)) scale(.9)}72%{transform:rotate(var(--rot)) scale(1.05)}100%{opacity:.93;transform:rotate(var(--rot)) scale(1)}}
@keyframes btThud{0%{transform:none}22%{transform:translate(-2px,2px) rotate(-.3deg)}48%{transform:translate(2px,-1px) rotate(.25deg)}74%{transform:translate(-1px,1px)}100%{transform:none}}

/* =====================  2 · BÀI VIẾT DẠNG VÉ  ===================== */
.bt-tks{display:grid;gap:14px}
.bt-tkw{min-width:0}
.bt-tk{--nr:9px;position:relative;display:flex;align-items:stretch;color:var(--ink);text-decoration:none;filter:drop-shadow(0 10px 12px rgba(10,10,12,.09)) drop-shadow(0 1px 1px rgba(10,10,12,.12));transition:transform .5s cubic-bezier(.2,.9,.3,1),filter .5s;-webkit-tap-highlight-color:transparent}
.bt-tk:active{transform:scale(.985)}
.bt-tk:focus-visible{outline-offset:5px;border-radius:12px}
.bt-tm{flex:1;min-width:0;display:flex;align-items:center;gap:12px;padding:10px 14px 10px 10px;background:#fff;border-radius:12px 0 0 12px;
  -webkit-mask:radial-gradient(circle var(--nr) at 100% 0,#0000 calc(var(--nr) - .5px),#000 var(--nr)) top/100% 51% no-repeat,radial-gradient(circle var(--nr) at 100% 100%,#0000 calc(var(--nr) - .5px),#000 var(--nr)) bottom/100% 51% no-repeat;
  mask:radial-gradient(circle var(--nr) at 100% 0,#0000 calc(var(--nr) - .5px),#000 var(--nr)) top/100% 51% no-repeat,radial-gradient(circle var(--nr) at 100% 100%,#0000 calc(var(--nr) - .5px),#000 var(--nr)) bottom/100% 51% no-repeat}
.bt-tpic{flex:none;width:78px;height:78px;border-radius:8px;overflow:hidden;background:#0a0a0c}
.bt-tpic .th{width:100%;height:100%}
.bt-tx{flex:1;min-width:0;display:flex;flex-direction:column;gap:6px}
.sk-bt .bt-tcat{display:flex;flex-wrap:wrap;align-items:center;gap:4px 8px;font:600 12px/1.25 var(--fb);color:var(--mut)}
.bt-tcat i{padding:2px 6px;border:1.5px solid var(--ink);border-radius:3px;color:var(--ink);font-style:normal;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.bt-ttl{display:block;font:700 15.5px/1.3 var(--fb);letter-spacing:-.01em;text-wrap:pretty}
.bt-ts{position:relative;flex:none;width:68px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--ac);color:#0a0a0c;border-radius:0 12px 12px 0;transition:transform .5s cubic-bezier(.2,.9,.3,1);
  -webkit-mask:radial-gradient(circle var(--nr) at 0 0,#0000 calc(var(--nr) - .5px),#000 var(--nr)) top/100% 51% no-repeat,radial-gradient(circle var(--nr) at 0 100%,#0000 calc(var(--nr) - .5px),#000 var(--nr)) bottom/100% 51% no-repeat;
  mask:radial-gradient(circle var(--nr) at 0 0,#0000 calc(var(--nr) - .5px),#000 var(--nr)) top/100% 51% no-repeat,radial-gradient(circle var(--nr) at 0 100%,#0000 calc(var(--nr) - .5px),#000 var(--nr)) bottom/100% 51% no-repeat}
.bt-ts::before{content:"";position:absolute;left:0;top:calc(var(--nr) + 6px);bottom:calc(var(--nr) + 6px);border-left:2px dashed rgba(10,10,12,.38)}
.bt-ts b{font:800 28px/1 var(--fb);letter-spacing:-.04em}
.bt-ts em{margin-top:3px;font:700 12px/1.15 var(--fb);font-style:normal;text-align:center}
.bt-tk2 .bt-ts{background:#0a0a0c;color:#fff}
.bt-tk2 .bt-ts b{color:var(--ac)}
.bt-tk2 .bt-ts::before{border-left-color:rgba(255,255,255,.4)}
@media(hover:hover) and (pointer:fine){
  .bt-tk:hover{transform:translateY(-5px) rotate(-.4deg);filter:drop-shadow(0 18px 16px rgba(10,10,12,.13)) drop-shadow(0 1px 1px rgba(10,10,12,.12))}
  .bt-tk:hover .bt-ts{transform:translateX(7px) rotate(2deg)}
}

/* =====================  3 · DANH SÁCH MANG THEO (bt_pack)  ===================== */
.bt-pk{position:relative;display:grid;gap:18px;min-width:0}
.bt-ctl{display:grid;gap:14px;padding:16px;background:#fff;border:1px solid var(--ln);border-radius:16px;box-shadow:0 16px 30px -22px rgba(10,10,12,.3)}
.bt-fld{min-width:0}
.bt-lb{display:block;margin-bottom:10px;font:700 12px/1.2 var(--fb);letter-spacing:.14em;text-transform:uppercase;color:var(--mut)}
.bt-types,.bt-sc{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.bt-typ,.bt-sb{display:flex;flex-direction:column;align-items:flex-start;gap:3px;min-height:80px;padding:10px 12px;text-align:left;border:1.5px solid var(--ln);border-radius:14px;background:var(--bg);color:var(--ink);cursor:pointer;transition:background .3s,color .3s,border-color .3s,transform .3s}
.bt-typ .s-ico,.bt-sb .s-ico{width:34px;height:34px;margin:0 0 4px}
.bt-typ b,.bt-sb b{font:800 15px/1.2 var(--fb);letter-spacing:-.01em}
.bt-typ small,.bt-sb small{font:500 12.5px/1.25 var(--fb);color:var(--mut)}
.bt-typ.on,.bt-sb.on{background:var(--ink);border-color:var(--ink);color:#fff}
.bt-typ.on small,.bt-sb.on small{color:rgba(255,255,255,.72)}
.bt-typ.on .s-ico,.bt-sb.on .s-ico{background:var(--ac);color:#0a0a0c}
.bt-typ:active,.bt-sb:active{transform:scale(.97)}
.bt-step{display:grid;grid-template-columns:56px minmax(0,1fr) 56px;align-items:center;gap:8px}
.bt-step button{height:52px;border:1.5px solid var(--ink);border-radius:12px;background:#fff;color:var(--ink);font:700 26px/1 var(--fb);cursor:pointer;transition:background .2s,transform .2s,opacity .2s}
.bt-step button:active{transform:scale(.93);background:var(--ac)}
.bt-step button:disabled{opacity:.3;cursor:default}
.bt-step output{display:flex;align-items:baseline;justify-content:center;gap:6px;min-height:52px;font:600 15px/1 var(--fb);color:var(--mut)}
.bt-step output b{font:800 36px/1 var(--fb);letter-spacing:-.05em;color:var(--ink);font-variant-numeric:tabular-nums}
.sk-bt .bt-role button.on{color:#0a0a0c}
.bt-role button{font-size:15px}

.bt-out{position:relative;min-width:0}
.bt-tag{position:relative;padding:18px 18px 18px;background:#0a0a0c;color:#fff;border-radius:16px 16px 0 0;
  -webkit-mask:radial-gradient(circle 10px at 0 100%,#0000 9.5px,#000 10px) left/51% 100% no-repeat,radial-gradient(circle 10px at 100% 100%,#0000 9.5px,#000 10px) right/51% 100% no-repeat;
  mask:radial-gradient(circle 10px at 0 100%,#0000 9.5px,#000 10px) left/51% 100% no-repeat,radial-gradient(circle 10px at 100% 100%,#0000 9.5px,#000 10px) right/51% 100% no-repeat}
.bt-tg1{display:flex;align-items:flex-end;justify-content:space-between;gap:12px}
.bt-tg1 small{display:block;font:600 12px/1.2 var(--fb);letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.62)}
.bt-tg1 b{display:block;margin-top:5px;font:800 17px/1.3 var(--fb)}
.bt-tg1 strong{font:800 clamp(42px,12vw,58px)/1 var(--fb);letter-spacing:-.05em;color:var(--ac);font-variant-numeric:tabular-nums}
.bt-prog{--pc:0;position:relative;height:10px;margin:32px 0 12px;border-radius:6px;background:rgba(255,255,255,.2)}
.bt-prog i{display:block;height:100%;width:calc(var(--pc)*100%);border-radius:inherit;background:var(--ac);transition:width .6s cubic-bezier(.2,.9,.3,1)}
.bt-fly{position:absolute;left:calc(var(--pc)*(100% - 26px));top:-22px;width:26px;height:26px;fill:#fff;transform:rotate(45deg);transition:left .6s cubic-bezier(.2,.9,.3,1)}
.sk-bt .bt-sum{font:500 14.5px/1.4 var(--fb);color:rgba(255,255,255,.78)}
.bt-ok{position:absolute;right:18px;bottom:14px;padding:5px 10px;border:2px solid var(--ac);border-radius:5px;color:var(--ac);font:800 12px/1 var(--fb);letter-spacing:.16em;text-transform:uppercase;opacity:0;transform:rotate(-8deg) scale(1.7);transition:opacity .3s,transform .5s cubic-bezier(.3,1.6,.5,1)}
.bt-pk.is-done .bt-ok{opacity:1;transform:rotate(-8deg) scale(1)}
.bt-act{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:18px 18px 4px;background:#fff;border:1px solid var(--ln);border-top:0}
.bt-act::before{content:"";position:absolute;left:18px;right:18px;top:0;border-top:2px dashed var(--tear)}
.bt-act .btn{padding-inline:12px}
.bt-groups{padding:2px 18px 10px;background:#fff;border:1px solid var(--ln);border-top:0;border-radius:0 0 16px 16px;box-shadow:0 18px 30px -22px rgba(10,10,12,.3)}
.bt-gp{padding-top:10px}
.bt-gp h3{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-bottom:8px;border-bottom:2px solid var(--ink);font:800 13px/1.2 var(--fb);letter-spacing:.12em;text-transform:uppercase}
.bt-gp h3 em{padding:5px 9px;border-radius:99px;background:rgba(10,10,12,.08);font:700 12px/1 var(--fb);font-style:normal;letter-spacing:.04em;transition:background .3s}
.bt-gp.is-full h3 em{background:var(--ac)}
.sk-bt .bt-gp ul{margin:0;padding:0;list-style:none}
.bt-gp li{border-bottom:1px dashed var(--ln)}
.bt-gp li:last-child{border-bottom:0}
.bt-it{position:relative;display:flex;align-items:flex-start;gap:12px;min-height:48px;padding:9px 2px;cursor:pointer}
.bt-it input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer}
.bt-bx{flex:none;display:grid;place-items:center;width:26px;height:26px;margin-top:-1px;border:2px solid var(--ink);border-radius:7px;background:#fff;transition:background .25s,border-color .25s,transform .25s}
.bt-bx svg{width:16px;height:16px;fill:none;stroke:#0a0a0c;stroke-width:3.2;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:22;stroke-dashoffset:22;transition:stroke-dashoffset .3s .06s}
.bt-it input:checked+.bt-bx{background:var(--ac);border-color:var(--ac);transform:scale(1.06)}
.bt-it input:checked+.bt-bx svg{stroke-dashoffset:0}
.bt-it input:focus-visible+.bt-bx{outline:2px solid var(--ink);outline-offset:3px}
.bt-itx{flex:1;min-width:0;font:500 15px/1.4 var(--fb);transition:color .3s}
.bt-it input:checked~.bt-itx{color:var(--mut);text-decoration:line-through;text-decoration-color:var(--ac);text-decoration-thickness:2px}
.bt-dock{margin-top:2px}
.sk-bt .s-dock.bill{background:#0a0a0c;color:#f5f4f1}
.sk-bt .s-dock.bill .btn-f{background:var(--ac);color:#0a0a0c}
@media(prefers-reduced-motion:no-preference){
  .kx-js .bt-gp.is-new li{animation:btRow .5s cubic-bezier(.2,.9,.3,1) backwards;animation-delay:calc(var(--i)*40ms)}
}
@keyframes btRow{from{opacity:0;transform:translateX(-14px)}}

/* =====================  4 · MỘT NGÀY TRONG CHUYẾN (bt_day)  ===================== */
.bt-dy{display:grid;gap:16px;min-width:0}
.bt-dl{min-width:0}
.bt-sky{--nt:0;--bx:.1;--by:.3;--sa:1;--ma:0;--bus:.12;--ah:56px;position:relative;height:172px;overflow:hidden;isolation:isolate;border:1px solid var(--ln);border-radius:16px;background:linear-gradient(180deg,#fff 0,#fff4ec 60%,#ffd9bf 100%)}
.bt-nt{position:absolute;inset:0;background:linear-gradient(180deg,#0a0a0c,#16161b 62%,#2a2a31);opacity:var(--nt)}
.bt-nt i{position:absolute;width:3px;height:3px;border-radius:50%;background:#fff}
.bt-bd{position:absolute;z-index:1;width:36px;height:36px;border-radius:50%;left:calc(var(--bx)*(100% - 36px));bottom:calc(54px + var(--by)*var(--ah))}
.bt-sun{background:var(--ac);box-shadow:0 0 0 8px rgba(255,106,19,.2),0 0 34px 8px rgba(255,106,19,.35);opacity:var(--sa)}
.bt-moon{background:#f5f4f1;box-shadow:inset -10px 3px 0 0 rgba(10,10,12,.92),0 0 24px 2px rgba(255,255,255,.28);opacity:var(--ma)}
.bt-hills{position:absolute;z-index:2;left:0;bottom:24px;width:100%;height:80px}
.bt-h1{fill:color-mix(in srgb,#34343b calc(var(--nt)*100%),#d3d1cb)}
.bt-h2{fill:color-mix(in srgb,#17171b calc(var(--nt)*100%),#0a0a0c)}
.bt-road{position:absolute;z-index:3;left:0;right:0;bottom:0;height:28px;background:#0a0a0c;border-top:2px solid #2a2a31}
.bt-road::before{content:"";position:absolute;left:0;right:0;top:50%;height:2px;margin-top:-1px;background:repeating-linear-gradient(90deg,#fff 0 12px,transparent 12px 24px);opacity:.5}
.bt-pin{position:absolute;left:calc(var(--p)*(100% - 46px) + 23px);bottom:4px;width:8px;height:8px;margin-left:-4px;border-radius:50%;background:#fff;opacity:.55;transition:background .3s,opacity .3s,transform .3s}
.bt-pin.is-past{background:var(--ac);opacity:1}
.bt-pin.is-on{background:var(--ac);opacity:1;transform:scale(1.7);box-shadow:0 0 0 3px rgba(255,106,19,.4)}
.bt-bus{position:absolute;z-index:1;left:calc(var(--bus)*(100% - 46px));bottom:10px;width:46px;height:24px}
.bt-bus svg{display:block;width:100%;height:100%}
.bt-clk{position:absolute;z-index:5;left:14px;top:12px;color:color-mix(in srgb,#fff calc(var(--nt)*100%),#0a0a0c)}
.bt-clk b{display:block;font:800 42px/1 var(--fb);letter-spacing:-.05em;font-variant-numeric:tabular-nums}
.bt-cl2{position:absolute;z-index:5;right:14px;top:16px;font:600 12px/1.2 var(--fb);letter-spacing:.06em;color:color-mix(in srgb,#fff calc(var(--nt)*100%),#0a0a0c);opacity:.75}
.sk-bt .bt-hint{display:flex;align-items:center;gap:8px;margin:14px 0 0;font:600 13px/1.3 var(--fb);color:var(--mut)}
.bt-hint svg{flex:none;width:20px;height:20px;fill:none;stroke:var(--ac);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.bt-dy.is-used .bt-hint{opacity:.55}
.bt-rng{margin-top:2px!important}
.bt-hrs{display:flex;justify-content:space-between;padding:0 12px;margin-top:-4px;font:600 12px/1 var(--fb);color:var(--mut);font-variant-numeric:tabular-nums}
.bt-nav{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}
.bt-card{position:relative;padding:16px 16px 14px 22px;background:#fff;border:1px solid var(--ln);border-radius:16px;box-shadow:0 18px 30px -22px rgba(10,10,12,.35)}
.bt-card::before{content:"";position:absolute;left:0;top:20px;bottom:20px;width:5px;border-radius:0 4px 4px 0;background:var(--ac)}
.bt-ch{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.bt-cm{flex:none;padding:7px 11px;border-radius:6px;background:#0a0a0c;color:var(--ac);font:800 20px/1 var(--fb);letter-spacing:.02em;font-variant-numeric:tabular-nums}
.bt-ch h3{font:800 20px/1.2 var(--fb);letter-spacing:-.02em;text-wrap:balance}
.bt-cr{display:grid;grid-template-columns:auto minmax(0,1fr);gap:12px;padding:12px 0;border-top:1px dashed var(--ln)}
.bt-ci .s-ico{width:38px;height:38px;margin:0}
.bt-cr2 .s-ico{background:var(--ac);color:#0a0a0c}
.bt-cr small{display:block;margin-bottom:4px;font:700 12px/1.2 var(--fb);letter-spacing:.14em;text-transform:uppercase;color:var(--mut)}
.sk-bt .bt-cr p{font:500 15.5px/1.55 var(--fb);color:var(--ink)}
.bt-cf{display:grid;gap:8px;padding-top:12px;border-top:2px solid var(--ink)}
.bt-mt{display:flex;align-items:center;gap:10px}
.bt-mt small{font:700 12px/1 var(--fb);letter-spacing:.14em;text-transform:uppercase;color:var(--mut)}
.bt-mt b{font:800 14px/1 var(--fb);font-variant-numeric:tabular-nums}
.bt-lv{display:flex;gap:4px}
.bt-lv i{width:18px;height:8px;border-radius:2px;background:rgba(10,10,12,.14);transition:background .3s}
.bt-lv i.on{background:var(--ac)}
.sk-bt .bt-an,.sk-bt .bt-nx{font:500 14.5px/1.45 var(--fb);color:var(--mut)}
.bt-an b{color:var(--ink);font-weight:800;font-variant-numeric:tabular-nums}
@media(prefers-reduced-motion:no-preference){
  .kx-js .bt-card.is-swap .bt-ch,.kx-js .bt-card.is-swap .bt-cr{animation:btSwap .5s cubic-bezier(.2,.9,.3,1) backwards}
  .kx-js .bt-card.is-swap .bt-cr2{animation-delay:.07s}
  .kx-js .bt-nt i{animation:btTwinkle 3s ease-in-out infinite}
  .kx-js .bt-nt i:nth-child(2n){animation-delay:-1.2s}
  .kx-js .bt-hint svg{animation:btNudge 1.8s ease-in-out infinite}
}
@keyframes btSwap{from{opacity:0;transform:translateY(10px)}}
@keyframes btTwinkle{0%,100%{opacity:.25}50%{opacity:1}}
@keyframes btNudge{0%,100%{transform:translateX(-3px)}50%{transform:translateX(3px)}}

/* =====================  5 · MẸO THEO MÙA (bt_season)  ===================== */
.bt-ss{display:grid;gap:18px;min-width:0}
.sk-bt .bt-yl{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:0 0 22px;font:700 12px/1.2 var(--fb);letter-spacing:.14em;text-transform:uppercase;color:var(--mut)}
.bt-yl span{display:inline-flex;align-items:center;gap:6px;font-weight:600;letter-spacing:.04em;text-transform:none}
.bt-nowd{width:8px;height:8px;border-radius:50%;background:var(--ink)}
.sk-bt .bt-mo{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:3px;margin:0;padding:0;list-style:none}
.bt-mo li{position:relative;display:grid;align-items:end;justify-items:center;height:54px;padding-bottom:8px;border-radius:7px 7px 3px 3px;background:rgba(10,10,12,.08);color:var(--mut);font:700 12px/1 var(--fb);font-variant-numeric:tabular-nums;transition:background .45s calc(var(--k)*30ms),color .3s calc(var(--k)*30ms),transform .55s cubic-bezier(.3,1.5,.5,1) calc(var(--k)*30ms)}
.bt-mo li.is-on{background:var(--ac);color:#0a0a0c;transform:translateY(-9px)}
.bt-mo li.is-now::after{content:"";position:absolute;top:-13px;left:50%;width:8px;height:8px;margin-left:-4px;border-radius:50%;background:var(--ink)}
.bt-sps{min-width:0}
.bt-sp{padding:18px 16px;background:#fff;border:1px solid var(--ln);border-radius:16px;box-shadow:0 18px 30px -24px rgba(10,10,12,.35)}
.bt-sp[hidden]{display:none}
.bt-sp h3{font:800 20px/1.25 var(--fb);letter-spacing:-.02em}
.bt-sp h3 span{display:inline-block;margin-top:8px;padding:5px 9px;border-radius:4px;background:#0a0a0c;color:var(--ac);font:700 12px/1.2 var(--fb);letter-spacing:.12em;text-transform:uppercase}
.sk-bt .bt-sp ul{display:grid;gap:10px;margin:14px 0 0;padding:0;list-style:none}
.bt-sp li{position:relative;padding-left:24px;font:500 15.5px/1.55 var(--fb)}
.bt-sp li::before{content:"";position:absolute;left:2px;top:.55em;width:10px;height:10px;border-radius:50%;background:var(--ac);box-shadow:0 0 0 3px rgba(255,106,19,.22)}
.sk-bt .bt-sn{margin-top:16px;padding:12px 14px;border-radius:10px;background:var(--bg);font:500 14.5px/1.5 var(--fb)}
.bt-sn b{font-weight:800}
@media(prefers-reduced-motion:no-preference){
  .kx-js .bt-sp:not([hidden]){animation:btSlide .55s cubic-bezier(.2,.9,.3,1) backwards}
}
@keyframes btSlide{from{opacity:0;transform:translateY(14px)}}

/* =====================  6 · KHỐI TỐI: DẢI THẺ BÀI  ===================== */
.bt-dk{--bg:#0a0a0c;--bg2:#111115;--card:#16161b;--ink:#f5f5f6;--mut:#a3a3ad;--ln:rgba(255,255,255,.14);--line:rgba(255,255,255,.12);--o:#ff6a13;background:#0a0a0c;color:#f5f5f6}
.bt-dk :focus-visible{outline-color:#fff}
.sk-bt .bt-dk .bt-no b{background:var(--ac);color:#0a0a0c}
.bt-dk .s-lead{color:var(--mut)}
.bt-dk .card-body em{font-size:12px}
.bt-dk .card-body small{font-size:12px}
.bt-cw{min-width:0;display:flex;flex-direction:column}
.bt-cw>.card{flex:1}
.sk-bt .bt-cap{display:flex;align-items:center;gap:8px;margin:0 0 10px;font:700 12px/1.25 var(--fb);letter-spacing:.12em;text-transform:uppercase;color:#ffa266}
.bt-cap::before{content:"";flex:none;width:14px;height:2px;background:currentColor}

/* =====================  7 · 5 ĐIỀU TRONG TÚI (thẻ lật)  ===================== */
.bt-bag{min-width:0}
.bt-rail{padding-top:10px}
.bt-fl{min-width:0}
.sk-bt .bt-fl .s-flip-f,.sk-bt .bt-fl .s-flip-b{min-height:232px}
.sk-bt .bt-fl .s-flip-f{background:#fff}
.bt-fn{display:block;margin-bottom:10px;font-size:52px;line-height:1;color:var(--ac)}
.bt-fl .s-flip-f h3{font:800 20px/1.2 var(--fb);letter-spacing:-.02em}
.sk-bt .bt-fl .s-flip-f p{margin-top:8px}
.sk-bt .bt-fu{display:grid;gap:10px;margin:14px 0 0;padding:0;list-style:none}
.bt-fu li{position:relative;padding-left:26px;font:600 15px/1.4 var(--fb);color:#0a0a0c}
.bt-fu li::before{content:"";position:absolute;left:0;top:.2em;width:15px;height:15px;border:2.5px solid #0a0a0c;border-radius:4px}
.bt-fu li::after{content:"";position:absolute;left:4.5px;top:.42em;width:6px;height:3px;border-left:2.5px solid #0a0a0c;border-bottom:2.5px solid #0a0a0c;transform:rotate(-45deg)}
.bt-dots{display:flex;justify-content:center;gap:8px;margin-top:4px}
.bt-dots i{width:8px;height:8px;border-radius:99px;background:rgba(10,10,12,.24);transition:width .3s,background .3s}
.bt-dots i.on{width:22px;background:var(--ac)}
@media(prefers-reduced-motion:no-preference){
  .kx-js .bt-rail.is-arm:not(.is-in) .bt-fl{opacity:0}
  .kx-js .bt-rail.is-in .bt-fl{animation:btDeal .8s cubic-bezier(.2,.85,.25,1) backwards;animation-delay:calc(var(--i)*.1s)}
}
@keyframes btDeal{from{opacity:0;transform:translateX(calc(var(--i)*-96% - 30px)) rotate(-7deg) scale(.9)}}

/* mobile: dải thẻ bài cuộn ngang, lộ mép thẻ kế */
@media(max-width:699px){
  .sk-bt .bt-g3{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;margin-inline:calc(var(--gut)*-1);padding:6px var(--gut) 14px;scroll-padding-inline:var(--gut);scrollbar-width:none;overscroll-behavior-x:contain}
  .bt-g3::-webkit-scrollbar{display:none}
  .bt-cw{flex:0 0 min(80%,310px);scroll-snap-align:start}
}

/* =====================  iPad dọc / lớn hơn mobile (>=700)  ===================== */
@media(min-width:700px){
  .bt-hero{padding-top:118px}
  .bt-hg{display:grid;grid-template-columns:minmax(0,440px) minmax(0,1fr);column-gap:36px;align-items:center}
  .sk-bt .s-crumb{grid-column:1/-1;grid-row:1}
  .sk-bt .bt-kick{grid-column:1/-1;grid-row:2}
  .sk-bt .bt-title{grid-column:1/-1;grid-row:3;font-size:clamp(96px,13.4vw,150px)}
  .bt-pw{grid-column:1;grid-row:4/span 2;margin-top:30px}
  .sk-bt .bt-sub{grid-column:2;grid-row:4;align-self:end;margin-top:30px}
  .sk-bt .bt-btns{grid-column:2;grid-row:5;align-self:start}

  .bt-tks{grid-template-columns:repeat(6,minmax(0,1fr));gap:18px}
  .bt-tkw{grid-column:span 2}
  .bt-tkw.bt-pj{grid-column:span 3}
  .bt-tkw:not(.bt-pj) .bt-tk{flex-direction:column;height:100%}
  .bt-tkw:not(.bt-pj) .bt-tm{flex:1;flex-direction:column;align-items:stretch;gap:12px;padding:12px 12px 16px;border-radius:14px 14px 0 0;
    -webkit-mask:radial-gradient(circle var(--nr) at 0 100%,#0000 calc(var(--nr) - .5px),#000 var(--nr)) left/51% 100% no-repeat,radial-gradient(circle var(--nr) at 100% 100%,#0000 calc(var(--nr) - .5px),#000 var(--nr)) right/51% 100% no-repeat;
    mask:radial-gradient(circle var(--nr) at 0 100%,#0000 calc(var(--nr) - .5px),#000 var(--nr)) left/51% 100% no-repeat,radial-gradient(circle var(--nr) at 100% 100%,#0000 calc(var(--nr) - .5px),#000 var(--nr)) right/51% 100% no-repeat}
  .bt-tkw:not(.bt-pj) .bt-tpic{width:100%;height:auto;aspect-ratio:16/10}
  .bt-tkw:not(.bt-pj) .bt-ttl{font-size:17px}
  .bt-tkw:not(.bt-pj) .bt-ts{width:auto;flex-direction:row;justify-content:flex-start;gap:8px;padding:14px 18px;border-radius:0 0 14px 14px;
    -webkit-mask:radial-gradient(circle var(--nr) at 0 0,#0000 calc(var(--nr) - .5px),#000 var(--nr)) left/51% 100% no-repeat,radial-gradient(circle var(--nr) at 100% 0,#0000 calc(var(--nr) - .5px),#000 var(--nr)) right/51% 100% no-repeat;
    mask:radial-gradient(circle var(--nr) at 0 0,#0000 calc(var(--nr) - .5px),#000 var(--nr)) left/51% 100% no-repeat,radial-gradient(circle var(--nr) at 100% 0,#0000 calc(var(--nr) - .5px),#000 var(--nr)) right/51% 100% no-repeat}
  .bt-tkw:not(.bt-pj) .bt-ts::before{left:calc(var(--nr) + 8px);right:calc(var(--nr) + 8px);top:0;bottom:auto;border-left:0;border-top:2px dashed rgba(10,10,12,.38)}
  .bt-tkw:not(.bt-pj) .bt-ts b{font-size:24px}
  .bt-tkw:not(.bt-pj) .bt-ts em{margin:0;text-align:left}
  .bt-tkw.bt-pj .bt-tpic{width:132px;height:100px}
  .bt-tkw.bt-pj .bt-ttl{font-size:17px}
  .bt-tkw.bt-pj .bt-tm{padding:14px 18px 14px 14px;gap:16px}
  .bt-tkw.bt-pj .bt-ts{width:84px}
  @media(hover:hover) and (pointer:fine){.bt-tkw:not(.bt-pj) .bt-tk:hover .bt-ts{transform:translateY(7px) rotate(-1.2deg)}}

  .bt-ctl{grid-template-columns:1fr 1fr;gap:18px 24px;padding:22px}
  .bt-ctl>.bt-fld:first-child{grid-column:1/-1}
  .bt-types{grid-template-columns:repeat(4,minmax(0,1fr))}
  .bt-sc{grid-template-columns:repeat(4,minmax(0,1fr))}
  .bt-groups{display:grid;grid-template-columns:1fr 1fr;column-gap:28px;align-content:start}
  .bt-act{padding-inline:22px}
  .bt-groups{padding-inline:22px}
  .bt-tag{padding:22px}

  .bt-sky{height:220px}
  .bt-dy{grid-template-columns:1fr}
  .bt-ss{gap:22px}
  .bt-sp{padding:24px 24px}
  .bt-sp ul{grid-template-columns:1fr 1fr 1fr;gap:20px}
  .sk-bt .bt-sp ul{grid-template-columns:repeat(3,minmax(0,1fr))}
  .bt-rail{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:16px;overflow:visible;margin-inline:0;padding:10px 0 0;scroll-snap-type:none}
  .bt-rail>.bt-fl{grid-column:span 2}
  .bt-rail>.bt-fl:nth-child(n+4){grid-column:span 3}
  .bt-dots{display:none}
  .sk-bt .bt-g3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;align-items:stretch;overflow:visible;margin-inline:0;padding:0}
}

/* =====================  máy tính bảng ngang / desktop  ===================== */
@media(min-width:1000px){
  .bt-hg{grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);column-gap:clamp(36px,5vw,76px)}
  .bt-hc{display:block;grid-column:1;grid-row:1}
  .sk-bt .bt-title{font-size:clamp(60px,6vw,88px)}
  .sk-bt .bt-hc .bt-sub{margin-top:24px}
  .sk-bt .bt-hc .bt-btns{margin-top:28px}
  .bt-pw{grid-column:2;grid-row:1;justify-self:end;width:min(100%,540px);margin-top:0}
  .bt-hero{padding-top:128px}
  .bt-st{transition:transform .4s}
}
@media(min-width:1025px){
  .bt-hero{min-height:min(100svh,940px);display:flex;align-items:center}
  .bt-hero>.wrap{width:100%}
  .bt-pk{grid-template-columns:minmax(300px,380px) minmax(0,1fr);gap:28px;align-items:start}
  .bt-ctl{grid-template-columns:1fr;position:sticky;top:100px;padding:22px}
  .bt-types{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bt-tag{padding:24px}
  .bt-dock{display:none}
  .bt-dy{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:32px;align-items:start}
  .bt-sky{height:260px}
  .bt-card{position:sticky;top:100px;padding:24px 24px 20px 28px}
  .bt-ss{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);column-gap:36px;row-gap:22px;align-items:start}
  .bt-yr{grid-column:1;grid-row:1}
  .bt-sc{grid-column:1;grid-row:2;grid-template-columns:repeat(2,minmax(0,1fr))}
  .bt-sps{grid-column:2;grid-row:1/span 2}
  .sk-bt .bt-sp ul{grid-template-columns:1fr}
  .bt-sp{padding:28px}
  .bt-rail{grid-template-columns:repeat(5,minmax(0,1fr))}
  .bt-rail>.bt-fl:nth-child(n){grid-column:auto}
  .bt-mo li{height:64px}
}
@media(min-width:1500px){
  .bt-sky{height:290px}
}

/* ---------- khối {{related}} và {{pager}} của khung: gọn lại trên điện thoại để cả trang không quá dài ---------- */
@media(max-width:699px){
  .sk-bt .s-rel{gap:10px}
  .sk-bt .s-rel a{min-height:0;gap:8px;padding:14px 16px}
  .sk-bt .s-rel b{font-size:19px}
  .sk-bt .s-pager{grid-template-columns:1fr 1fr;gap:10px;padding-block:4px 20px}
  .sk-bt .s-pager .r{text-align:right}
  .sk-bt .s-pager a{padding:14px}
  .sk-bt .s-pager b{font-size:16px;line-height:1.3}
}