/* ==========================================================================
   LỄ HỘI ÁNH SÁNG HÀ NỘI 2026 (LHAS26) — phong cách "Monochrome typographic"
   Chỉ có hai màu: ĐEN #000 và TRẮNG #FFF (ngoại lệ duy nhất: VÀNG #FFE600 cho
   trạng thái đang chọn/đang kích hoạt). Không dùng ảnh trang trí — chữ chính là
   thiết kế: tiêu đề khổng lồ 80–260px xếp chồng, đè lên nhau; chữ xoay dọc
   (writing-mode) dọc mép trái; dải cuộn ngang scroll-snap mỗi ô một từ;
   marquee tên nghệ sĩ chữ rỗng (text-stroke); số ngày 12 13 14 cỡ lớn với tên
   thứ nhỏ xíu bên cạnh; lưới chương trình giờ 120px / tên 16px; vạch chia là
   thanh đen 8px; các khối ĐẢO MÀU (trắng-trên-đen ↔ đen-trên-trắng) xen kẽ với
   cạnh cứng. Nút bấm chỉ là chữ in hoa có gạch chân dày, hover thì gạch chân
   "đổ đầy" lên chữ. Header: wordmark "LHAS26" góc trái + đồng hồ đếm ngược mono
   góc phải; menu là chữ dọc mép trái (desktop) / thanh dưới cùng (mobile).
   Font: "Bricolage Grotesque" 800 (nén, letter-spacing âm) cho chữ hiển thị;
   "IBM Plex Mono" cho mọi thông tin phụ (meta), nhãn, nút.
   Ảnh duy nhất (hero-01) hiện qua một "ô cửa sổ" nhỏ, chuyển đen-trắng.
   ========================================================================== */
:root{
  --k:#000; --w:#FFF; --y:#FFE600;
  --ff-d:'Bricolage Grotesque','Arial Narrow',Impact,system-ui,sans-serif;
  --ff-m:'IBM Plex Mono','Courier New',ui-monospace,monospace;
  --rail:64px; --topbar:56px; --bar:8px;
  --giant:clamp(80px,18vw,260px);
  --big:clamp(56px,11vw,160px);
  --mid:clamp(36px,6vw,96px);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--w);color:var(--k);font-family:var(--ff-m);font-size:14px;line-height:1.5;padding-left:var(--rail);padding-top:var(--topbar);overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
::selection{background:var(--y);color:var(--k)}
h1,h2,h3,.d{font-family:var(--ff-d);font-weight:800;font-stretch:condensed;letter-spacing:-.04em;line-height:.86;text-transform:uppercase}
.d-giant{font-size:var(--giant)}
.d-big{font-size:var(--big)}
.d-mid{font-size:var(--mid)}
.outline{color:transparent;-webkit-text-stroke:2px var(--k)}
.inv .outline,.outline.on-k,.inv .phead h1 span:nth-child(2),.inv .tab,.inv .cell[data-type="at"] b,.inv .wall a:nth-child(5n){-webkit-text-stroke-color:var(--w)}
.mono{font-family:var(--ff-m)}
.up{text-transform:uppercase;letter-spacing:.08em}
.sm{font-size:11px;letter-spacing:.1em;text-transform:uppercase}
.ph{background:var(--img,#000) center/cover no-repeat;filter:grayscale(1) contrast(1.15)}
.hr{height:var(--bar);background:var(--k);border:0}
.inv .hr{background:var(--w)}
.inv{background:var(--k);color:var(--w)}
.inv ::selection{background:var(--y);color:var(--k)}
.ys{background:var(--y);color:var(--k)}
/* ---------- Thanh trên ---------- */
.top{position:fixed;top:0;left:var(--rail);right:0;height:var(--topbar);z-index:50;display:flex;align-items:center;justify-content:space-between;padding:0 20px;background:var(--w);border-bottom:var(--bar) solid var(--k)}
.wordmark{font-family:var(--ff-d);font-weight:800;font-stretch:condensed;letter-spacing:-.04em;font-size:28px;line-height:1}
.wordmark i{font-style:normal;background:var(--y);padding:0 4px}
.clock{font-family:var(--ff-m);font-size:13px;letter-spacing:.06em;text-transform:uppercase;display:flex;gap:14px;align-items:baseline;white-space:nowrap}
.clock b{font-weight:400;font-variant-numeric:tabular-nums;font-size:18px}
.clock small{font-size:10px;opacity:.7}
/* ---------- Rail menu dọc ---------- */
.rail{position:fixed;top:0;left:0;bottom:0;width:var(--rail);z-index:60;background:var(--w);border-right:var(--bar) solid var(--k);display:flex;flex-direction:column;align-items:center}
.rail__brand{display:none;writing-mode:vertical-rl;transform:rotate(180deg);font-family:var(--ff-d);font-weight:800;font-stretch:condensed;font-size:22px;letter-spacing:-.02em;padding:14px 0;border-bottom:var(--bar) solid var(--k);width:100%;text-align:center}
.nav{display:flex;flex-direction:column;flex:1;justify-content:flex-end;width:100%;padding-top:var(--topbar)}
.nav a{writing-mode:vertical-rl;transform:rotate(180deg);font-family:var(--ff-m);font-size:12px;letter-spacing:.2em;text-transform:uppercase;padding:22px 0;text-align:center;width:100%;border-top:2px solid var(--k)}
.nav a:hover{background:var(--k);color:var(--w)}
.nav a.is-active{background:var(--y);color:var(--k)}
.burger{display:none}
/* ---------- Khối chung ---------- */
.sec{padding:clamp(40px,7vw,110px) clamp(18px,4vw,64px);position:relative}
.sec--tight{padding-top:24px;padding-bottom:24px}
.label{display:flex;justify-content:space-between;align-items:baseline;gap:20px;font-family:var(--ff-m);font-size:11px;letter-spacing:.14em;text-transform:uppercase;border-bottom:2px solid currentColor;padding-bottom:8px;margin-bottom:28px}
.label span+span{opacity:.7}
.vtext{position:absolute;left:clamp(6px,1vw,16px);top:clamp(40px,7vw,110px);writing-mode:vertical-rl;transform:rotate(180deg);font-family:var(--ff-m);font-size:11px;letter-spacing:.3em;text-transform:uppercase;white-space:nowrap}
.sec.has-v{padding-left:clamp(44px,6vw,96px)}
.btn-t{display:inline-block;font-family:var(--ff-m);font-size:13px;letter-spacing:.14em;text-transform:uppercase;padding:6px 0 4px;position:relative;line-height:1.2;background-image:linear-gradient(currentColor,currentColor);background-repeat:no-repeat;background-size:100% 4px;background-position:0 100%;transition:background-size .25s,color .25s}
.btn-t:hover,.btn-t:focus-visible{background-size:100% 100%;color:var(--w);outline:0}
.inv .btn-t:hover,.inv .btn-t:focus-visible{color:var(--k)}
.btn-t.is-on{background:var(--y);color:var(--k)}
.btn-t--big{font-size:18px;background-size:100% 6px}
.btn-row{display:flex;flex-wrap:wrap;gap:8px 32px;align-items:center}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
/* ---------- Hero: chồng chữ ---------- */
.hero{padding:clamp(24px,4vw,56px) clamp(18px,4vw,64px) 0;position:relative;overflow:hidden;display:flex;flex-direction:column}
.hero__meta{display:flex;justify-content:space-between;gap:20px;font-size:11px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:16px;flex-wrap:wrap}
.stack{position:relative;padding:.18em 0 clamp(40px,8vw,120px);font-size:var(--giant)}
.stack .w{display:block;font-family:var(--ff-d);font-weight:800;font-stretch:condensed;letter-spacing:-.05em;line-height:.78;text-transform:uppercase;font-size:var(--giant);white-space:nowrap}
.stack .w1{margin-left:-.02em}
.stack .w2{margin-left:12vw;margin-top:-.08em}
.stack .w3{margin-top:-.1em;color:transparent;-webkit-text-stroke:3px var(--k);position:relative;z-index:2}
.stack .w4{margin-left:22vw;margin-top:-.22em;position:relative;z-index:1}
.stack .w4 em{font-style:normal;background:var(--k);color:var(--w);padding:0 .06em}
.hero__v{position:absolute;right:clamp(10px,3vw,40px);top:clamp(70px,7vw,110px);writing-mode:vertical-rl;font-family:var(--ff-d);font-weight:800;font-size:clamp(28px,4vw,56px);letter-spacing:-.02em;line-height:1;text-transform:uppercase;border-left:var(--bar) solid var(--k);padding-left:10px}
.hero__win{position:absolute;right:clamp(12px,6vw,90px);top:40%;width:min(480px,36vw);aspect-ratio:4/3;border:var(--bar) solid var(--k);z-index:3;box-shadow:16px 16px 0 var(--y)}
.hero__win figcaption{position:absolute;left:-8px;bottom:-30px;font-size:10px;letter-spacing:.14em;text-transform:uppercase;background:var(--w);padding:2px 6px}
.hero__foot{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap;padding:24px 0 20px;border-top:2px solid var(--k);margin-top:20px}
.hero__foot p{max-width:420px;font-size:12px;line-height:1.7}
/* ---------- Số ngày ---------- */
.dates{display:grid;grid-template-columns:repeat(3,1fr);border-top:var(--bar) solid currentColor}
.date{padding:20px clamp(12px,2vw,32px) 30px;border-right:var(--bar) solid currentColor;display:flex;align-items:flex-start;gap:8px;position:relative;cursor:default}
.date:last-child{border-right:0}
.date b{font-family:var(--ff-d);font-weight:800;font-stretch:condensed;letter-spacing:-.06em;line-height:.8;font-size:var(--giant)}
.date small{writing-mode:vertical-rl;transform:rotate(180deg);font-size:10px;letter-spacing:.2em;text-transform:uppercase;align-self:stretch;line-height:1;padding-bottom:6px}
.date:hover{background:var(--y);color:var(--k)}
.date span{position:absolute;right:12px;bottom:10px;font-size:10px;letter-spacing:.14em;text-transform:uppercase}
/* ---------- Dải cuộn ngang ---------- */
.strip{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none;border-top:var(--bar) solid var(--k);border-bottom:var(--bar) solid var(--k)}
.strip::-webkit-scrollbar{display:none}
.strip__p{flex:0 0 100%;scroll-snap-align:start;min-height:min(70vh,560px);display:flex;align-items:center;justify-content:center;position:relative;padding:40px}
.strip__p:nth-child(even){background:var(--k);color:var(--w)}
.strip__p b{font-family:var(--ff-d);font-weight:800;font-stretch:condensed;letter-spacing:-.05em;line-height:.8;font-size:clamp(120px,32vw,460px);text-transform:uppercase}
.strip__p:nth-child(even) b{color:transparent;-webkit-text-stroke:3px var(--w)}
.strip__p small{position:absolute;left:24px;top:20px;font-size:11px;letter-spacing:.2em;text-transform:uppercase}
.strip__p i{position:absolute;right:24px;bottom:20px;font-style:normal;font-size:11px;letter-spacing:.2em;text-transform:uppercase}
.strip__hint{font-size:11px;letter-spacing:.14em;text-transform:uppercase;text-align:right;padding:8px clamp(18px,4vw,64px)}
/* ---------- Chương trình ---------- */
.tabs{display:flex;gap:0;border-bottom:var(--bar) solid currentColor;margin-bottom:0}
.tab{font-family:var(--ff-d);font-weight:800;font-stretch:condensed;letter-spacing:-.05em;line-height:.8;font-size:var(--big);text-transform:uppercase;padding:8px 24px 4px 8px;border-right:var(--bar) solid currentColor;color:transparent;-webkit-text-stroke:2px var(--k)}
.inv .tab{-webkit-text-stroke-color:var(--w)}
.tab small{display:block;font-family:var(--ff-m);font-size:10px;letter-spacing:.2em;-webkit-text-stroke:0;color:inherit;margin-bottom:6px;font-weight:400}
.inv .tab small{color:var(--w)}
.tab:hover{color:currentColor;-webkit-text-stroke:0}
.inv .tab:hover{color:var(--w)}
.tab.is-active{background:var(--y);color:var(--k);-webkit-text-stroke:0}
.tab.is-active small{color:var(--k)}
.tabs .tab:last-child{border-right:0}
.sched{display:none}
.sched.is-active{display:block}
.srow{display:grid;grid-template-columns:auto 1fr auto;gap:0 clamp(12px,3vw,48px);align-items:end;padding:14px 0 10px;border-bottom:2px solid currentColor;position:relative}
.srow:hover{background:var(--y);color:var(--k)}
.srow.is-hidden{display:none}
.srow .t{font-family:var(--ff-d);font-weight:800;font-stretch:condensed;letter-spacing:-.06em;line-height:.8;font-size:clamp(44px,8vw,120px);width:clamp(120px,22vw,300px);font-variant-numeric:tabular-nums}
.srow .n{font-size:16px;font-family:var(--ff-m);text-transform:uppercase;letter-spacing:.02em;padding-bottom:6px}
.srow .n small{display:block;font-size:10px;letter-spacing:.14em;opacity:.7;margin-bottom:4px}
.srow .s{font-size:10px;letter-spacing:.14em;text-transform:uppercase;border:2px solid currentColor;padding:4px 8px;margin-bottom:6px;white-space:nowrap}
.srow .s[data-stage="SK1"]{background:currentColor;color:var(--w)}
.inv .srow .s[data-stage="SK1"]{color:var(--k)}
.srow:hover .s[data-stage="SK1"]{background:var(--k);color:var(--y)}
.srow .act{font-size:11px;padding-bottom:6px}
.srow--x{grid-template-columns:auto 1fr auto auto}
.sfilter{display:flex;flex-wrap:wrap;gap:10px 28px;padding:16px 0;border-bottom:2px solid currentColor;margin-bottom:8px;align-items:center}
.sfilter span{font-size:10px;letter-spacing:.2em;text-transform:uppercase;opacity:.7}
/* ---------- Marquee ---------- */
.marq{overflow:hidden;white-space:nowrap;border-top:var(--bar) solid var(--w);border-bottom:var(--bar) solid var(--w);padding:18px 0}
.marq__in{display:inline-block;animation:marq 40s linear infinite}
.marq__in span{font-family:var(--ff-d);font-weight:800;font-stretch:condensed;letter-spacing:-.03em;font-size:clamp(48px,8vw,120px);line-height:1;text-transform:uppercase;color:transparent;-webkit-text-stroke:2px var(--w);padding:0 .25em}
.marq__in span:nth-child(4n){color:var(--w);-webkit-text-stroke:0}
.marq__in span:nth-child(7n){color:var(--y);-webkit-text-stroke:0}
.marq--k{border-color:var(--k)}
.marq--k .marq__in span{-webkit-text-stroke-color:var(--k)}
.marq--k .marq__in span:nth-child(4n){color:var(--k)}
.marq--rev .marq__in{animation-direction:reverse}
@keyframes marq{to{transform:translateX(-50%)}}
@media(prefers-reduced-motion:reduce){.marq__in{animation:none}}
/* ---------- Bản đồ chữ ---------- */
.map{display:grid;grid-template-columns:repeat(8,1fr);border:var(--bar) solid currentColor}
.cell{aspect-ratio:1;display:flex;flex-direction:column;justify-content:space-between;padding:8px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;cursor:crosshair;position:relative}
.cell:nth-child(8n){border-right:0}
.cell:nth-last-child(-n+8){border-bottom:0}
.cell b{font-family:var(--ff-d);font-weight:800;font-stretch:condensed;letter-spacing:-.04em;font-size:clamp(24px,4.4vw,64px);line-height:.9}
.cell small{font-size:9px;letter-spacing:.14em;text-transform:uppercase}
.cell:hover,.cell.is-on,.cell:focus-visible{background:var(--y);color:var(--k);outline:0}
.cell[data-type="at"] b{color:transparent;-webkit-text-stroke:1.5px var(--k)}
.cell[data-type="at"]:hover b,.cell[data-type="at"].is-on b{color:var(--k);-webkit-text-stroke:0}
.cell[data-type="tn"]{background:var(--k);color:var(--w)}
.cell[data-type="tn"]:hover,.cell[data-type="tn"].is-on{background:var(--y);color:var(--k)}
.cell.is-dim{opacity:.18}
.legend{display:flex;flex-wrap:wrap;gap:8px 32px;font-size:11px;letter-spacing:.14em;text-transform:uppercase;padding:14px 0}
.legend i{display:inline-block;width:14px;height:14px;border:2px solid currentColor;vertical-align:-2px;margin-right:8px}
.legend i.f{background:currentColor}
.legend i.y{background:var(--y)}
.panel{position:fixed;right:20px;bottom:20px;z-index:70;width:min(360px,calc(100vw - 40px));background:var(--k);color:var(--w);border:var(--bar) solid var(--w);outline:2px solid var(--k);padding:16px 18px;font-family:var(--ff-m);font-size:12px;line-height:1.6;pointer-events:none;opacity:0;transform:translateY(8px);transition:opacity .15s,transform .15s}
.panel.is-on{opacity:1;transform:none}
.panel b{display:block;font-family:var(--ff-d);font-weight:800;font-stretch:condensed;letter-spacing:-.03em;font-size:34px;line-height:.9;text-transform:uppercase;margin-bottom:8px}
.panel .y{color:var(--y)}
.panel dl{display:grid;grid-template-columns:auto 1fr;gap:2px 14px}
.panel dt{opacity:.6;text-transform:uppercase;letter-spacing:.1em;font-size:10px;padding-top:2px}
/* ---------- Vé ---------- */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);border-top:var(--bar) solid currentColor}
.tier{padding:24px clamp(14px,2vw,32px) 32px;border-right:var(--bar) solid currentColor;display:flex;flex-direction:column;gap:14px;position:relative;min-height:380px}
.tier:last-child{border-right:0}
.tier .pr{font-family:var(--ff-d);font-weight:800;font-stretch:condensed;letter-spacing:-.06em;line-height:.8;font-size:clamp(56px,8.5vw,150px);margin-top:auto}
.tier .pr small{font-family:var(--ff-m);font-size:10px;letter-spacing:.14em;font-weight:400;display:block;margin-top:10px}
.tier h3{font-size:clamp(22px,2.4vw,34px)}
.tier ul{font-size:11px;letter-spacing:.06em;line-height:1.9;text-transform:uppercase}
.tier ul li::before{content:"— "}
.tier.is-hot{background:var(--k);color:var(--w)}
.tier.is-hot .btn-t:hover{color:var(--k)}
.tier .tag{position:absolute;top:0;right:0;background:var(--y);color:var(--k);font-size:10px;letter-spacing:.2em;padding:4px 10px;text-transform:uppercase}
/* ---------- Máy tính vé ---------- */
.calc{display:grid;grid-template-columns:1.1fr .9fr;gap:0;border:var(--bar) solid var(--k)}
.calc__l{padding:28px;border-right:var(--bar) solid var(--k)}
.calc__r{padding:28px;background:var(--k);color:var(--w);display:flex;flex-direction:column;justify-content:space-between;gap:20px}
.qrow{display:grid;grid-template-columns:1fr auto auto;gap:14px;align-items:center;padding:14px 0;border-bottom:2px solid var(--k)}
.qrow label{font-size:12px;text-transform:uppercase;letter-spacing:.06em}
.qrow label small{display:block;font-size:10px;opacity:.6;letter-spacing:.14em}
.qrow .price{font-family:var(--ff-d);font-weight:800;font-size:28px;letter-spacing:-.03em}
.stepper{display:flex;border:2px solid var(--k)}
.stepper button{width:36px;height:36px;font-size:18px;font-family:var(--ff-m)}
.stepper button:hover{background:var(--k);color:var(--w)}
.stepper input{width:48px;text-align:center;border:0;border-left:2px solid var(--k);border-right:2px solid var(--k);font-family:var(--ff-m);font-size:16px;-moz-appearance:textfield}
.stepper input::-webkit-inner-spin-button{-webkit-appearance:none}
.total{font-family:var(--ff-d);font-weight:800;font-stretch:condensed;letter-spacing:-.06em;line-height:.8;font-size:clamp(64px,9vw,170px);color:var(--y)}
.total small{display:block;font-family:var(--ff-m);font-size:10px;letter-spacing:.2em;font-weight:400;color:var(--w);margin-bottom:12px}
.calc__r dl{display:grid;grid-template-columns:1fr auto;gap:6px 20px;font-size:12px;text-transform:uppercase;letter-spacing:.06em}
.calc__r dd{font-variant-numeric:tabular-nums;text-align:right}
/* ---------- Form kiểu dấu nhắc ---------- */
.form{border:var(--bar) solid var(--k);padding:28px}
.f{display:grid;grid-template-columns:1fr 1fr;gap:18px 28px}
.f .full{grid-column:1/-1}
.f label{display:block;font-size:11px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:6px}
.f label::before{content:"> ";color:var(--y)}
.f input,.f select,.f textarea{width:100%;border:0;border-bottom:2px solid var(--k);background:transparent;padding:8px 0;font-family:var(--ff-m);font-size:15px;border-radius:0}
.f input:focus,.f select:focus,.f textarea:focus{outline:0;background:var(--y)}
.f textarea{min-height:100px;resize:vertical}
.f .chk{display:flex;gap:10px;align-items:flex-start;font-size:12px;text-transform:none;letter-spacing:0}
.f .chk::before{content:none}
.f .chk input{width:16px;height:16px;margin-top:2px;accent-color:#000}
.f .ok{display:none;background:var(--k);color:var(--y);padding:12px 16px;font-size:12px;letter-spacing:.1em;text-transform:uppercase}
.f .ok.is-on{display:block}
/* ---------- FAQ / quy định ---------- */
.faq{counter-reset:q}
.faq li{display:grid;grid-template-columns:clamp(70px,9vw,130px) 1fr;gap:20px;padding:22px 0;border-bottom:2px solid currentColor;align-items:start}
.faq li::before{counter-increment:q;content:"0" counter(q);font-family:var(--ff-d);font-weight:800;font-stretch:condensed;letter-spacing:-.05em;font-size:clamp(40px,6vw,88px);line-height:.8}
.faq li:nth-child(n+10)::before{content:counter(q)}
.faq h3{font-family:var(--ff-m);font-weight:400;font-size:15px;text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px}
.faq p{font-size:12px;line-height:1.7;max-width:640px}
.rules li{padding:10px 0;border-bottom:2px solid currentColor;font-size:12px;display:grid;grid-template-columns:36px 1fr;gap:12px}
.rules li b{font-family:var(--ff-d);font-size:20px;font-weight:800}
/* ---------- Bức tường tên nghệ sĩ ---------- */
.wall{display:flex;flex-wrap:wrap;align-items:baseline;gap:0 .3em;line-height:.9}
.wall a{font-family:var(--ff-d);font-weight:800;font-stretch:condensed;letter-spacing:-.04em;text-transform:uppercase;font-size:clamp(34px,6.2vw,110px);display:inline-block;position:relative}
.wall a:nth-child(3n){font-size:clamp(26px,4.4vw,72px)}
.wall a:nth-child(5n){color:transparent;-webkit-text-stroke:2px var(--k)}
.wall a:nth-child(7n){font-size:clamp(44px,8.5vw,150px)}
.wall a:nth-child(11n){writing-mode:vertical-rl;font-size:clamp(20px,3vw,48px);vertical-align:bottom;margin:0 .1em}
.wall a:hover,.wall a:focus-visible,.wall a.is-on{background:var(--y);color:var(--k);-webkit-text-stroke:0;outline:0}
.wall a.is-hidden{display:none}
.wall a::after{content:"/";font-family:var(--ff-m);font-size:.3em;font-weight:400;vertical-align:top;margin-left:.2em;opacity:.5}
.inv .wall a:nth-child(5n){-webkit-text-stroke-color:var(--w)}
.inv .wall a:hover,.inv .wall a.is-on{color:var(--k)}
.count{font-size:11px;letter-spacing:.14em;text-transform:uppercase}
/* ---------- Danh sách gian hàng ---------- */
.blist{columns:2;column-gap:40px}
.blist li{break-inside:avoid;display:grid;grid-template-columns:64px 1fr auto;gap:12px;padding:10px 0;border-bottom:2px solid currentColor;font-size:12px;align-items:baseline;cursor:pointer}
.blist li b{font-family:var(--ff-d);font-weight:800;font-size:28px;letter-spacing:-.04em;line-height:.9}
.blist li small{font-size:10px;letter-spacing:.14em;text-transform:uppercase;opacity:.7}
.blist li:hover{background:var(--y);color:var(--k)}
/* ---------- Trang con: tiêu đề ---------- */
.phead{padding:clamp(24px,4vw,56px) clamp(18px,4vw,64px) 0;position:relative;overflow:hidden}
.phead h1{font-size:var(--giant);white-space:nowrap;margin-left:-.03em;padding-top:.15em}
.phead h1 span{display:block}
.phead h1 span:nth-child(2){margin-left:10vw;margin-top:-.12em;color:transparent;-webkit-text-stroke:3px var(--k)}
.phead .sub{display:flex;justify-content:space-between;gap:20px;font-size:11px;letter-spacing:.14em;text-transform:uppercase;padding:20px 0;border-top:var(--bar) solid currentColor;margin-top:24px;flex-wrap:wrap}
/* ---------- Footer ---------- */
.foot{padding:clamp(40px,6vw,90px) clamp(18px,4vw,64px) 120px;position:relative;overflow:hidden}
.foot .d-giant{white-space:nowrap;margin-left:-.03em}
.foot .d-giant span{display:block}
.foot .d-giant span+span{margin-left:14vw;margin-top:-.1em;color:var(--y)}
.foot__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;padding-top:30px;border-top:var(--bar) solid var(--w);margin-top:30px;font-size:11px;letter-spacing:.1em;text-transform:uppercase;line-height:2}
.foot__grid h4{font-family:var(--ff-m);font-weight:400;opacity:.6;margin-bottom:6px}
.foot__grid a:hover{background:var(--w);color:var(--k)}
.foot__end{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:40px;font-size:10px;letter-spacing:.14em;text-transform:uppercase;opacity:.7}
.foot .vtext{color:var(--w)}
/* ---------- Số liệu ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:var(--bar) solid currentColor;border-bottom:var(--bar) solid currentColor}
.stats div{padding:20px;border-right:2px solid currentColor}
.stats div:last-child{border-right:0}
.stats b{display:block;font-family:var(--ff-d);font-weight:800;font-stretch:condensed;letter-spacing:-.05em;font-size:clamp(48px,7vw,120px);line-height:.8}
.stats small{font-size:10px;letter-spacing:.2em;text-transform:uppercase}
/* ---------- Responsive ---------- */
@media(max-width:1100px){
  :root{--rail:52px}
  .stack .w2{margin-left:8vw}.stack .w4{margin-left:16vw}
  .foot__grid{grid-template-columns:1fr 1fr}
  .calc{grid-template-columns:1fr}.calc__l{border-right:0;border-bottom:var(--bar) solid var(--k)}
}
@media(max-width:980px){
  :root{--rail:0px;--topbar:52px}
  body{padding-left:0;padding-bottom:56px}
  .top{left:0}
  .rail{top:auto;bottom:0;width:100%;height:56px;border-right:0;border-top:var(--bar) solid var(--k);flex-direction:row;justify-content:space-between;align-items:stretch}
  .rail__brand{writing-mode:horizontal-tb;transform:none;border-bottom:0;width:auto;padding:0 18px;display:flex;align-items:center;font-size:20px}
  .burger{display:flex;align-items:center;gap:12px;padding:0 18px;font-family:var(--ff-m);font-size:12px;letter-spacing:.2em;text-transform:uppercase;border-left:var(--bar) solid var(--k)}
  .burger i{display:block;width:22px;height:3px;background:var(--k);box-shadow:0 -7px 0 var(--k),0 7px 0 var(--k)}
  .burger[aria-expanded="true"]{background:var(--y)}
  .nav{position:fixed;left:0;right:0;top:var(--topbar);bottom:48px;background:var(--w);display:none;flex-direction:column;justify-content:center;padding:20px;z-index:55}
  .nav.is-open{display:flex}
  .nav a{writing-mode:horizontal-tb;transform:none;font-family:var(--ff-d);font-weight:800;font-stretch:condensed;font-size:clamp(44px,12vw,90px);letter-spacing:-.04em;line-height:.9;text-align:left;padding:10px 0;border-top:2px solid var(--k)}
  .nav a:last-child{border-bottom:2px solid var(--k)}
  .hero{min-height:0}
  .hero__win{position:relative;right:auto;top:auto;width:min(480px,80%);margin:24px 0 40px;box-shadow:12px 12px 0 var(--y)}
  .hero__v{font-size:24px}
  .row2{grid-template-columns:1fr}
  .map{grid-template-columns:repeat(5,1fr)}
  .cell:nth-child(8n){border-right:2px solid currentColor}
  .cell:nth-child(5n){border-right:0}
  .cell:nth-last-child(-n+8){border-bottom:2px solid currentColor}
  .cell:nth-last-child(-n+5){border-bottom:0}
  .tiers{grid-template-columns:1fr}.tier{border-right:0;border-bottom:var(--bar) solid currentColor;min-height:0}
  .stats{grid-template-columns:1fr 1fr}.stats div:nth-child(2n){border-right:0}.stats div:nth-child(-n+2){border-bottom:2px solid currentColor}
  .panel{right:12px;bottom:68px}
  .blist{columns:1}
  .f{grid-template-columns:1fr}
}
@media(max-width:640px){
  :root{--bar:6px}
  .top{padding:0 14px}
  .clock{gap:8px}.clock b{font-size:14px}.clock small{display:none}
  .stack .w{font-size:clamp(64px,22vw,140px)}
  .stack .w2{margin-left:6vw}.stack .w4{margin-left:10vw}
  .hero__v{display:none}
  .dates{grid-template-columns:1fr}.date{border-right:0;border-bottom:var(--bar) solid currentColor}.date:last-child{border-bottom:0}
  .tab{font-size:clamp(40px,14vw,80px);padding:8px 12px 4px 6px}
  .srow{grid-template-columns:1fr auto;gap:6px 12px}
  .srow .t{grid-column:1/-1;width:auto;font-size:clamp(44px,16vw,90px)}
  .srow .act{grid-column:1/-1;padding-top:6px}
  .srow--x{grid-template-columns:1fr auto}
  .map{grid-template-columns:repeat(4,1fr)}
  .cell:nth-child(5n){border-right:2px solid currentColor}
  .cell:nth-child(4n){border-right:0}
  .cell:nth-last-child(-n+5){border-bottom:2px solid currentColor}
  .cell:nth-last-child(-n+4){border-bottom:0}
  .cell b{font-size:clamp(22px,7vw,40px)}
  .qrow{grid-template-columns:1fr auto;gap:8px}.qrow .price{grid-column:1/-1}
  .faq li{grid-template-columns:1fr}.faq li::before{font-size:44px}
  .foot__grid{grid-template-columns:1fr}
  .wall a{font-size:clamp(28px,9vw,60px)}.wall a:nth-child(7n){font-size:clamp(34px,12vw,80px)}
  .stats{grid-template-columns:1fr}.stats div{border-right:0;border-bottom:2px solid currentColor}
  .sec.has-v{padding-left:clamp(18px,4vw,64px)}.vtext{display:none}
  .form,.calc__l,.calc__r{padding:18px}
}