/* BỘ NÃO THỨ HAI — giao diện chung (cùng khung Vàng–Đen với trang Hệ Thống Ngầm). */
:root{--bg:#0B0A08;--bg2:#12100C;--surface:#17140F;--surface2:#1F1A12;--ink:#F2EBDD;--muted:#B3A68C;--dim:#857A64;
  --gold:#D4AF5F;--gold2:#F0D89A;--gold3:#A87F35;--line:#332B1E;--paper:#F5EFE3;--paper2:#FBF8F1;--pink:#1C1812;--pmuted:#5A4E3C;--bronze:#8A6420;--bad:#E3926F;
  --fd:"Playfair Display",Georgia,"Times New Roman",serif;--fb:"Be Vietnam Pro","Segoe UI",system-ui,sans-serif;
  --foil:linear-gradient(180deg,#F7E7B4 0%,#D9B566 52%,#A87F35 100%);color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.7 var(--fb);overflow-x:hidden}
img{max-width:100%;display:block;height:auto}
a{color:var(--gold2)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
h1,h2,h3{margin:0;text-wrap:balance}
p{margin:0 0 14px}
.w{max-width:1160px;margin:0 auto;padding-inline:20px}
.k{font:700 12px/1.4 var(--fb);letter-spacing:.26em;text-transform:uppercase;color:var(--gold)}
.k::before{content:"";display:inline-block;width:26px;height:1px;background:var(--gold);vertical-align:middle;margin-right:12px}
section{padding-block:clamp(64px,9vw,120px);position:relative}
h2{font:700 clamp(30px,4.6vw,52px)/1.1 var(--fd);letter-spacing:-.01em;margin:14px 0 22px;max-width:22ch}
h2 em,h1 em{font-style:italic;color:var(--gold2)}
.lead{font-size:clamp(17px,2vw,20px);color:var(--muted);max-width:62ch}
strong{color:var(--gold2);font-weight:600}
.foil{background:var(--foil);-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent;padding-block:.22em;-webkit-box-decoration-break:clone;box-decoration-break:clone}
.alt{background:var(--bg2)}
.paper{background:var(--paper);color:var(--pink)}
.paper .k{color:var(--bronze)}.paper .k::before{background:var(--bronze)}
.paper .lead{color:var(--pmuted)}.paper strong{color:var(--bronze)}
.paper h2 em{color:var(--bronze)}
.center{text-align:center}.center h2,.center .lead{margin-inline:auto}
.center .k::after{content:"";display:inline-block;width:26px;height:1px;background:currentColor;vertical-align:middle;margin-left:12px}
.orn{display:flex;align-items:center;justify-content:center;gap:12px;color:var(--gold);margin:6px 0 0}
.orn::before,.orn::after{content:"";width:60px;height:1px;background:linear-gradient(90deg,transparent,var(--gold))}
.orn::after{transform:scaleX(-1)}

/* nút */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:var(--foil);color:#14100A;font:800 16px/1.2 var(--fb);letter-spacing:.02em;border:0;border-radius:3px;padding:17px 28px;cursor:pointer;text-decoration:none;box-shadow:0 10px 30px -10px rgba(212,175,95,.55),inset 0 1px 0 rgba(255,255,255,.4);transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-1px);box-shadow:0 16px 40px -12px rgba(212,175,95,.7),inset 0 1px 0 rgba(255,255,255,.4)}
.btn[disabled]{opacity:.6;cursor:wait;transform:none}
.btn.ghost{background:transparent;color:var(--gold2);border:1px solid var(--gold);box-shadow:none}
.btn.ghost:hover{background:rgba(212,175,95,.08)}
.btn.full{width:100%}

/* form */
.f{display:grid;gap:12px}
.f label{display:block;font:700 11.5px var(--fb);letter-spacing:.14em;text-transform:uppercase;color:var(--gold);margin-bottom:6px}
.f input,.f select,.f textarea{width:100%;font:400 16.5px var(--fb);color:var(--ink);background:rgba(11,10,8,.85);border:1px solid var(--line);border-radius:3px;padding:14px 15px}
.f input::placeholder,.f textarea::placeholder{color:#6f6657}
.f input:focus,.f select:focus,.f textarea:focus{border-color:var(--gold);outline:0}
.f .err{display:none;color:var(--bad);font-size:13px;margin-top:5px}
.f .bad input{border-color:var(--bad)}.f .bad .err{display:block}
.f small{font-size:12.5px;line-height:1.55;color:var(--dim)}
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;opacity:0}

/* thẻ */
.card{background:linear-gradient(180deg,var(--surface2),var(--surface));border:1px solid var(--line);border-radius:6px;padding:26px;min-width:0}
.paper .card{background:var(--paper2);border-color:#D9C9A3}

/* video */
.yt{position:relative;aspect-ratio:16/9;width:100%;background:#000 center/cover no-repeat;border-radius:6px;overflow:hidden;border:1px solid var(--line);box-shadow:0 30px 60px -30px rgba(0,0,0,.8)}
.yt button{position:absolute;inset:0;width:100%;height:100%;border:0;background:linear-gradient(0deg,rgba(11,10,8,.9),rgba(11,10,8,.05) 62%);cursor:pointer;display:flex;flex-direction:column;justify-content:flex-end;align-items:flex-start;gap:6px;padding:18px;text-align:left;color:#fff;font:700 15.5px/1.35 var(--fb)}
.yt button::before{content:"";position:absolute;left:50%;top:44%;width:74px;height:74px;margin:-37px 0 0 -37px;border-radius:50%;background:var(--gold) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M8 5v14l11-7z' fill='%2314100A'/%3E%3C/svg%3E") 56% 50%/32px no-repeat;box-shadow:0 0 0 10px rgba(212,175,95,.18),0 8px 30px rgba(0,0,0,.6);transition:transform .2s}
.yt button:hover::before{transform:scale(1.08)}
.yt button small{font-weight:700;font-size:11px;color:var(--gold2);letter-spacing:.16em;text-transform:uppercase}
.yt iframe{position:absolute;inset:0;width:100%;height:100%;border:0}

/* thanh trên + Zalo nổi */
.bar{position:sticky;top:0;z-index:40;background:rgba(11,10,8,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar .w{display:flex;align-items:center;gap:16px;min-height:60px}
.logo{font:700 15px var(--fd);letter-spacing:.18em;color:var(--ink);text-decoration:none;white-space:nowrap}
.logo b{color:var(--gold)}
.bar nav{display:flex;gap:22px;margin-left:auto;font-size:14px}
.bar nav a{color:var(--muted);text-decoration:none}.bar nav a:hover{color:var(--gold2)}
.bar .btn{padding:10px 18px;font-size:14px;gap:0}
.zalo{position:fixed;right:16px;bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:50;display:flex;align-items:center;gap:8px;background:#0B0A08;border:1px solid var(--gold);color:var(--gold2);border-radius:99px;padding:10px 16px 10px 12px;font:700 13.5px var(--fb);text-decoration:none;box-shadow:0 10px 30px rgba(0,0,0,.55)}
.zalo i{width:26px;height:26px;border-radius:50%;background:var(--foil);display:grid;place-items:center;font:800 11px var(--fb);color:#14100A;font-style:normal}
footer{padding:44px 0 calc(90px + env(safe-area-inset-bottom,0px));font-size:13.5px;color:var(--dim);border-top:1px solid var(--line);background:#080706}
footer a{color:var(--muted)}
footer .w{display:grid;gap:10px}

.rv{opacity:0;transform:translateY(22px);transition:opacity .8s ease,transform .8s ease}
.rv.in{opacity:1;transform:none}
@media (max-width:820px){.bar nav{display:none}.bar .btn{margin-left:auto}body{font-size:16.5px}}
@media (max-width:480px){.bar .btn{padding:9px 14px;font-size:13px}.bar .btn .dai{display:none}.logo{font-size:13px;letter-spacing:.14em}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.rv{opacity:1;transform:none;transition:none}.btn,.yt button::before{transition:none}}

/* khối link đại sứ */
.ds-ok{font-size:16px;color:var(--ink);margin:0 0 12px}.ds-ok b{color:var(--gold2)}
.ds-link{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;margin-bottom:18px}
.ds-link input{width:100%;font:600 16px var(--fb);color:var(--gold2);background:#0B0A08;border:1px solid var(--gold);border-radius:3px;padding:14px}
.ds-grid{display:grid;grid-template-columns:200px minmax(0,1fr);gap:20px;align-items:start}
.ds-qr{background:#fff;padding:16px;border-radius:4px;width:200px}
.ds-qr img,.ds-qr canvas{width:168px!important;height:168px!important}
.ds-h{font:700 12px var(--fb);letter-spacing:.14em;text-transform:uppercase;color:var(--gold);margin:0 0 10px}
.ds-msg{background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:14px;margin-bottom:10px}
.ds-msg p{font-size:14.5px;color:#DCD2BE;margin:0 0 10px;line-height:1.55}
.ds-msg .btn{padding:8px 14px;font-size:13px}
.ds-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}.ds-row .btn{padding:12px 18px;font-size:14px}
.ds-note{font-size:13.5px;color:var(--muted);margin-top:16px}
.ds-err{color:var(--bad);font-size:14px;margin-top:10px}
@media (max-width:640px){.ds-grid{grid-template-columns:1fr}.ds-qr{margin-inline:auto}.ds-link{grid-template-columns:1fr}}

/* ===== KHỐI OFFER & HỆ THỐNG (dùng chung trang sách + trang cảm ơn) ===== */
/* hệ thống 7 mảnh */
.flow{list-style:none;counter-reset:m;margin:34px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;position:relative}
.flow li{counter-increment:m;position:relative;background:linear-gradient(180deg,var(--surface2),var(--surface));border:1px solid var(--line);border-top:3px solid var(--gold3);border-radius:6px;padding:18px 14px 16px;display:flex;flex-direction:column;gap:8px;min-width:0}
.flow li::before{content:"L" counter(m);font:800 12px var(--fb);letter-spacing:.16em;color:var(--gold)}
.flow li.nao{border-color:rgba(212,175,95,.75);border-top-color:var(--gold2);background:radial-gradient(120% 80% at 50% 0,rgba(212,175,95,.18),transparent 70%),var(--surface2);box-shadow:0 0 0 1px rgba(212,175,95,.25),0 30px 60px -30px rgba(212,175,95,.35)}
.flow li.nao{grid-row:span 2;justify-content:center;padding:28px 22px}.flow li.nao h3{font-size:26px}.flow li.nao p{font-size:15.5px}.flow li.nao::before{font-size:14px}
.flow h3{font:700 18px/1.25 var(--fd);color:var(--ink)}
.flow p{font-size:14px;line-height:1.5;color:var(--muted);margin:0}
.flow .tay{margin-top:auto;padding-top:10px;border-top:1px dashed var(--line);font-size:12.5px;line-height:1.45;color:#C9A8A0}
.flow .tay b{display:block;font:800 10.5px var(--fb);letter-spacing:.14em;text-transform:uppercase;color:var(--bad);margin-bottom:2px}
.flow li.nao .tay{color:var(--gold2)}.flow li.nao .tay b{color:var(--gold)}
.chot{margin:30px auto 0;max-width:46ch;text-align:center;font:italic 600 clamp(21px,2.8vw,30px)/1.35 var(--fd);color:var(--gold2)}

/* vì sao trước */
.whyb{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:28px}
.whyb div{background:var(--paper2);border:1px solid #D9C9A3;border-radius:6px;padding:22px 22px 18px;position:relative}
.whyb b{display:block;font:900 34px/1 var(--fd);color:var(--bronze);margin-bottom:8px}
.whyb h3{font:700 19px/1.3 var(--fd);color:var(--pink);margin-bottom:8px}
.whyb p{font-size:15px;line-height:1.6;color:var(--pmuted);margin:0}
.tru{margin-top:22px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px 28px;align-items:center;background:#0B0A08;color:var(--ink);border:1px solid var(--gold);border-radius:8px;padding:clamp(20px,3vw,30px);box-shadow:0 30px 60px -30px rgba(0,0,0,.5)}
.tru h3{font:700 clamp(21px,2.6vw,27px)/1.25 var(--fd);margin-bottom:8px}
.tru p{color:var(--muted);margin:0;font-size:15px}
.calc{display:grid;gap:4px;font:600 15px/1.4 var(--fb);color:var(--muted);text-align:right;min-width:240px}
.calc s{color:var(--dim)}.calc .eq{border-top:1px solid var(--gold3);padding-top:6px;margin-top:4px}
.calc .eq b{font:800 clamp(26px,3vw,34px)/1 var(--fd)}

/* offer bộ não */
.offer{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(24px,4vw,48px);align-items:start;margin-top:30px}
.stack{list-style:none;margin:0;padding:0;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.stack li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 18px;padding:15px 18px;border-bottom:1px solid var(--line);background:var(--surface)}
.stack li:nth-child(even){background:var(--bg2)}
.stack li:last-child{border-bottom:0}
.stack b{font:700 16px/1.35 var(--fb);color:var(--ink)}
.stack span{grid-column:1;font-size:14px;line-height:1.5;color:var(--muted)}
.stack em{grid-row:1/span 2;grid-column:2;align-self:center;font:700 14px var(--fb);font-style:normal;color:var(--gold2);white-space:nowrap}
.stack em.k0{color:var(--dim);font-weight:500}
.stack .tang-k{background:rgba(212,175,95,.07)}
.stack .tang-k b::before{content:"Tặng · ";color:var(--gold)}
.buy{position:sticky;top:90px;background:linear-gradient(180deg,#221C12,#120F0B);border:1px solid var(--gold);border-radius:8px;padding:clamp(22px,3vw,30px);box-shadow:0 0 0 1px rgba(212,175,95,.18),0 40px 80px -40px #000}
.buy .rib{display:inline-block;background:var(--foil);color:#14100A;font:800 11.5px var(--fb);letter-spacing:.14em;text-transform:uppercase;padding:6px 12px;border-radius:2px;margin-bottom:16px}
.tiers{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:8px}
.tiers li{display:flex;justify-content:space-between;gap:12px;align-items:baseline;font-size:14.5px;color:var(--muted);border-bottom:1px dashed var(--line);padding-bottom:8px}
.tiers li s{color:var(--dim)}
.tiers li.now{border:0;padding:6px 0 0;color:var(--ink);font-weight:600}
.tiers li.now b{font:800 clamp(38px,5vw,50px)/1 var(--fd)}
.buy .btn{width:100%;margin-top:6px}
.buy .ghost{margin-top:10px}
.trust{list-style:none;margin:18px 0 0;padding:16px 0 0;border-top:1px solid var(--line);display:grid;gap:8px}
.trust li{font-size:13.5px;line-height:1.5;color:var(--muted);padding-left:22px;position:relative}
.trust li::before{content:"";position:absolute;left:2px;top:.5em;width:9px;height:9px;border:1.5px solid var(--gold);transform:rotate(45deg)}
.fine{font-size:12.5px;line-height:1.55;color:var(--dim);margin:14px 0 0}
.proof{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:40px}
.proof figure{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:6px;overflow:hidden}
.proof img{aspect-ratio:16/9;object-fit:cover;width:100%}
.proof figcaption{padding:14px 16px 16px;font-size:14px;line-height:1.5;color:var(--muted)}
.proof figcaption b{display:block;font:800 26px/1.1 var(--fd);color:var(--gold2);margin-bottom:4px}
.proof figcaption small{display:block;font:700 11px var(--fb);letter-spacing:.14em;text-transform:uppercase;color:var(--gold);margin-bottom:6px}

/* combo tay chân */
.tc{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,5vw,60px);align-items:center}
.shot{margin:0;border-radius:8px;overflow:hidden;border:1px solid rgba(212,175,95,.5);box-shadow:0 40px 80px -40px #000,0 0 80px -30px rgba(212,175,95,.35)}
.shot figcaption{background:#0B0A08;padding:10px 14px;font-size:12.5px;color:var(--dim);border-top:1px solid var(--line)}
.ticks{list-style:none;margin:20px 0;padding:0;display:grid;gap:10px}
.ticks li{padding-left:30px;position:relative;line-height:1.55;color:#DCD2BE;font-size:15.5px}
.ticks li::before{content:"";position:absolute;left:4px;top:.45em;width:11px;height:6px;border-left:2px solid var(--gold);border-bottom:2px solid var(--gold);transform:rotate(-45deg)}
.week{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:0 0 20px}
.week div{border:1px solid var(--line);border-radius:6px;padding:12px 14px;background:var(--surface);font-size:14px;color:var(--muted);line-height:1.5}
.week b{display:block;font:800 11px var(--fb);letter-spacing:.14em;text-transform:uppercase;color:var(--gold);margin-bottom:4px}
.lim2{font-size:13.5px;color:var(--dim);line-height:1.6;margin:16px 0 0;padding:12px 14px;border-left:2px solid var(--line)}
.lim2 b{color:var(--muted)}

/* bậc thang */
.ladder{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin-top:34px;align-items:stretch}
.step{position:relative;display:flex;flex-direction:column;background:var(--paper2);border:1px solid #D9C9A3;border-radius:8px;padding:22px 18px 18px;min-width:0}
.step .lv{font:800 11px var(--fb);letter-spacing:.18em;text-transform:uppercase;color:var(--bronze)}
.step h3{font:700 20px/1.25 var(--fd);color:var(--pink);margin:8px 0 6px}
.step .p{font:800 22px/1.15 var(--fd);color:var(--pink);margin-bottom:4px}
.step .p small{display:block;font:500 12.5px/1.4 var(--fb);color:var(--pmuted);margin-top:4px}
.step .ai{font-size:13.5px;line-height:1.5;color:var(--pmuted);margin:8px 0 10px}
.step ul{list-style:none;margin:0 0 16px;padding:10px 0 0;border-top:1px solid #E3D6B8;display:grid;gap:6px}
.step li{font-size:13.5px;line-height:1.45;color:var(--pink);padding-left:16px;position:relative}
.step li::before{content:"";position:absolute;left:0;top:.5em;width:7px;height:7px;background:var(--bronze);transform:rotate(45deg)}
.step .btn{margin-top:auto;padding:13px 12px;font-size:14px;width:100%}
.step .btn.ghost{color:var(--bronze);border-color:var(--bronze)}
.step.hot{background:#0B0A08;border-color:var(--gold);box-shadow:0 30px 60px -30px rgba(0,0,0,.6),0 0 0 1px rgba(212,175,95,.3);transform:translateY(-10px)}
.step.hot .lv,.step.hot li{color:var(--gold2)}.step.hot h3,.step.hot .p{color:var(--ink)}
.step.hot .ai,.step.hot .p small{color:var(--muted)}.step.hot ul{border-color:var(--line)}.step.hot li::before{background:var(--gold)}
.step .flag{position:absolute;top:-12px;left:18px;right:18px;text-align:center;background:var(--foil);color:#14100A;font:800 10.5px/1 var(--fb);letter-spacing:.12em;text-transform:uppercase;padding:7px 8px;border-radius:2px}
.step .suat{display:inline-block;margin-top:6px;font:700 11.5px var(--fb);letter-spacing:.06em;color:#fff;background:var(--bronze);padding:4px 8px;border-radius:2px}
.below{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px;margin-top:22px}
.below .card h3{font:700 20px/1.3 var(--fd);color:var(--pink);margin-bottom:12px}
.mini-l{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.mini-l li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2px 14px;font-size:14.5px;line-height:1.45;color:var(--pmuted);padding-bottom:10px;border-bottom:1px solid #E7DCC4}
.mini-l li:last-child{border:0;padding:0}
.mini-l a{font-weight:700;color:var(--pink);text-decoration:none}.mini-l a:hover{color:var(--bronze);text-decoration:underline}
.mini-l em{font-style:normal;font-weight:700;color:var(--bronze);white-space:nowrap}
.map{margin-top:18px;text-align:center;font-size:14.5px;color:var(--pmuted)}.map a{color:var(--bronze);font-weight:700}

@media (max-width:1100px){.ladder{grid-template-columns:repeat(3,minmax(0,1fr))}.step.hot{transform:none}}
@media (max-width:1000px){.offer,.tc{grid-template-columns:1fr}.buy{position:static}.proof{grid-template-columns:1fr 1fr}}
@media (max-width:820px){.flow{grid-template-columns:1fr 1fr}.flow li.nao{grid-column:1/-1;grid-row:auto}.whyb,.below,.ladder{grid-template-columns:1fr}.tru{grid-template-columns:1fr}.calc{text-align:left;min-width:0}.step.hot{order:-1}}
@media (max-width:520px){.flow,.proof,.week{grid-template-columns:1fr}.stack li{grid-template-columns:1fr}.stack em{grid-row:auto;grid-column:1}}
.ladder.l3{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.ladder.l3 .step{padding:26px 22px 22px}
.below.b3{grid-template-columns:repeat(3,minmax(0,1fr))}
.alt .mini-l li{color:var(--muted);border-color:var(--line)}.alt .mini-l a{color:var(--ink)}.alt .mini-l em{color:var(--gold2)}.alt .below .card h3{color:var(--ink)}
.chon{list-style:none;margin:26px 0 0;padding:20px 22px;display:grid;gap:10px;background:var(--paper2);border:1px solid #D9C9A3;border-radius:6px}
.chon li{font-size:15px;line-height:1.5;color:var(--pmuted);padding-left:24px;position:relative}
.chon li::before{content:"→";position:absolute;left:0;color:var(--bronze);font-weight:800}
.chon b{color:var(--pink)}
.nhac{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;justify-content:space-between;margin-top:18px;padding:12px 16px;border:1px solid rgba(212,175,95,.4);border-radius:6px;background:rgba(212,175,95,.06);font-size:14.5px;color:#DCD2BE}
.nhac a{flex:none;font:700 13.5px var(--fb);color:var(--gold2);text-decoration:none;border-bottom:1px solid var(--gold)}
@media (max-width:1000px){.ladder.l3,.below.b3{grid-template-columns:1fr}}
.mini-l span{grid-column:1/-1;font-size:13px;color:inherit;opacity:.9}
#tay-chan h2{font-size:clamp(28px,3.4vw,42px)}
.flow li.nao h3,.tru h3{max-width:none}
#bac-thang>.w,#he-thong>.w{max-width:1320px}
.step .flag{white-space:nowrap;font-size:10px;left:10px;right:10px;letter-spacing:.08em}
.step h3{font-size:clamp(18px,1.6vw,21px)}
.ladder.l4{grid-template-columns:repeat(4,minmax(0,1fr))}
.ladder.l2{grid-template-columns:repeat(2,minmax(0,1fr));max-width:900px;margin-inline:auto}
@media (max-width:1000px){.ladder.l4{grid-template-columns:repeat(2,minmax(0,1fr))}.ladder.l2{grid-template-columns:1fr}}
@media (max-width:820px){.ladder.l4{grid-template-columns:1fr}}
.shot video{display:block;width:100%;height:auto;aspect-ratio:16/9;background:#000}
.tc{align-items:start}.tc .shot{position:sticky;top:90px}
@media (max-width:1000px){.tc .shot{position:static;order:-1}}