/* ==========================================================================
   DECO STUDIO — Studio nhiếp ảnh chân dung & cưới phong cách cổ điển (Hà Nội)
   PHONG CÁCH: ART DECO thập niên 1920 — poster thời Gatsby. Nền đen #0B0B0B,
   vàng kim #C9A227 (chữ kim loại dùng gradient + background-clip), kem #F3E9D2
   cho chữ. Hoạ tiết hình học vẽ bằng CSS/SVG: tia mặt trời (sunburst), viền
   zigzag, KHUNG BẬC THANG (stepped frame), khung hai nét có ô vuông góc, hình
   quạt/vòm. Bố cục đối xứng, tiêu đề canh giữa, KHÔNG bo góc.
   Bố cục: header = monogram "D" trong khung bậc thang, nav tách trái/phải chữ
   nhỏ in hoa giãn rộng, nét đôi dưới × hero = DẢI GALLERY CUỘN NGANG TOÀN MÀN
   (scroll-snap, mỗi slide 1 chân dung đen trắng trong khung bậc thang + biển
   chú thích, mũi tên ◀ ▶ + chấm chỉ báo, tự chạy 5s) × "Gói chụp" 3 thẻ cao
   khung bậc thang, biển giá vàng, tia sunburst sau thẻ giữa × "Bộ sưu tập"
   masonry đối xứng, góc vàng khi hover × "Lịch trống" lưới tháng kiểu tờ
   chương trình nhà hát (chọn ngày JS) × "Quy trình" 4 bước sơ đồ hình quạt ×
   cảm nhận trong khung hai nét với dấu ngoặc kép lớn × footer tia sunburst.
   Font: Cinzel Decorative (monogram, thương hiệu, giá, số — font này không
   có ký tự Việt) + Prata (tiêu đề tiếng Việt, Didone kiểu Vogue 1920) +
   Poiret One (phụ đề) + Cormorant Garamond (thân). Ảnh: link trực tiếp Wikimedia qua biến --img trên .ph,
   lọc đen trắng bằng filter.
   ========================================================================== */
:root{
  --black:#0B0B0B; --black-2:#141210; --black-3:#1E1A15; --ph:#1a1612;
  --gold:#C9A227; --gold-2:#E8C766; --gold-3:#F1D77A; --gold-deep:#8F6F14; --gold-dim:#5C4A16;
  --cream:#F3E9D2; --cream-2:#D8CBAA; --muted:#A79A7C; --line:rgba(201,162,39,.35);
  --ff-d:'Cinzel Decorative','Prata',Georgia,serif;   /* monogram, thương hiệu, giá, số */
  --ff-h:'Prata','Cinzel Decorative',Georgia,serif;   /* tiêu đề tiếng Việt (Cinzel Decorative không có bộ ký tự Việt) */
  --ff-s:'Poiret One','Cormorant Garamond',Georgia,serif;
  --ff:'Cormorant Garamond',Georgia,'Times New Roman',serif;
  --metal:linear-gradient(180deg,#F7E39A 0%,#E8C766 30%,#C9A227 50%,#8F6F14 62%,#E0BE52 80%,#F7E39A 100%);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--ff);color:var(--cream);background:var(--black);line-height:1.6;font-size:18px;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;background:none;border:0;color:inherit}
h1,h2,h3,h4{font-family:var(--ff-h);font-weight:400;line-height:1.15;color:var(--gold);letter-spacing:.12em;text-transform:uppercase;text-align:center}
.container{width:min(1160px,92%);margin:0 auto}
.ph{background:var(--img,none) center/cover no-repeat;background-color:var(--ph);filter:grayscale(1) contrast(1.1)}
svg{display:block}

/* ---------- Chữ kim loại / phụ đề ---------- */
.gold-txt{background:var(--metal);-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent}
.sub{font-family:var(--ff-s);letter-spacing:.35em;text-transform:uppercase;font-size:.78rem;color:var(--gold);text-align:center}
.lead{font-size:1.2rem;color:var(--cream-2);max-width:680px;margin:0 auto;text-align:center;font-style:italic}

/* ---------- Ornament: đường kẻ trang trí ---------- */
.orn{display:flex;align-items:center;justify-content:center;gap:12px;color:var(--gold);margin:14px auto;width:min(100%,520px)}
.orn::before,.orn::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,transparent,var(--gold) 40%,var(--gold))}
.orn::after{background:linear-gradient(90deg,var(--gold),var(--gold) 60%,transparent)}
.orn i{font-style:normal;font-size:.7rem;letter-spacing:.4em;transform:translateX(.2em)}
.orn--l{width:100%}
.rule-2{height:5px;border-top:1px solid var(--gold);border-bottom:1px solid var(--gold)}
.zigzag{height:12px;background:
  linear-gradient(135deg,var(--gold) 25%,transparent 25%) 0 0/12px 12px repeat-x,
  linear-gradient(45deg,var(--gold) 25%,transparent 25%) 0 0/12px 12px repeat-x}
.zigzag--top{transform:scaleY(-1)}

/* ---------- Khung bậc thang (stepped frame) ---------- */
.stepped{position:relative;padding:16px;isolation:isolate}
.stepped::before,.stepped::after{content:"";position:absolute;inset:0;z-index:-1;
  clip-path:polygon(14px 0,calc(100% - 14px) 0,calc(100% - 14px) 7px,calc(100% - 7px) 7px,calc(100% - 7px) 14px,100% 14px,
  100% calc(100% - 14px),calc(100% - 7px) calc(100% - 14px),calc(100% - 7px) calc(100% - 7px),calc(100% - 14px) calc(100% - 7px),
  calc(100% - 14px) 100%,14px 100%,14px calc(100% - 7px),7px calc(100% - 7px),7px calc(100% - 14px),0 calc(100% - 14px),
  0 14px,7px 14px,7px 7px,14px 7px)}
.stepped::before{background:var(--gold)}
.stepped::after{inset:2px;background:var(--black)}
.stepped--dark::after{background:var(--black-2)}
.stepped > .inner{outline:1px solid var(--line);outline-offset:6px}

/* ---------- Khung hai nét có ô vuông góc ---------- */
.dframe{position:relative;border:1px solid var(--gold);padding:clamp(28px,5vw,60px);
  background:
   linear-gradient(var(--gold),var(--gold)) top left/9px 9px no-repeat,
   linear-gradient(var(--gold),var(--gold)) top right/9px 9px no-repeat,
   linear-gradient(var(--gold),var(--gold)) bottom left/9px 9px no-repeat,
   linear-gradient(var(--gold),var(--gold)) bottom right/9px 9px no-repeat}
.dframe::before{content:"";position:absolute;inset:6px;border:1px solid var(--gold);pointer-events:none}

/* ---------- Nút ---------- */
.btn{display:inline-block;border:1px solid var(--gold);color:var(--gold);padding:13px 30px;font-family:var(--ff-s);font-size:.8rem;
  letter-spacing:.28em;text-transform:uppercase;transition:.25s;position:relative;line-height:1.2}
.btn::before{content:"◆";font-size:.62em;margin-right:.9em;vertical-align:.15em}
.btn:hover{background:var(--gold);color:var(--black)}
.btn--solid{background:var(--gold);color:var(--black)}
.btn--solid:hover{background:var(--gold-2)}
.btn--sm{padding:9px 18px;font-size:.7rem}
.btn-row{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-top:28px}

/* ---------- Header ---------- */
.header{position:sticky;top:0;z-index:50;background:var(--black);border-bottom:1px solid var(--gold)}
.header::after{content:"";display:block;height:3px;border-bottom:1px solid var(--gold);margin-top:0}
.header .container{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:14px 0 12px}
.nav{display:contents}
.nav ul{display:flex;gap:clamp(14px,2.6vw,38px);align-items:center;font-family:var(--ff-s);font-size:.74rem;letter-spacing:.3em;text-transform:uppercase}
.nav .nav-l{order:1;justify-self:end;justify-content:flex-end}
.nav .nav-r{order:3;justify-self:start}
.nav a{color:var(--cream-2);padding:6px 0;border-bottom:1px solid transparent;transition:.2s}
.nav a:hover,.nav a.active{color:var(--gold);border-bottom-color:var(--gold)}
.mono{order:2;margin:0 clamp(18px,3vw,44px);display:grid;place-items:center;width:64px;height:64px;padding:0}
.mono b{font-family:var(--ff-d);font-size:1.7rem;font-weight:700;background:var(--metal);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.brand-line{grid-column:1/-1;text-align:center;font-family:var(--ff-s);font-size:.62rem;letter-spacing:.5em;text-transform:uppercase;color:var(--muted);margin-top:8px}
.burger{order:4;display:none;width:42px;height:42px;border:1px solid var(--gold);color:var(--gold);place-items:center;justify-self:end}
.burger svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5}

/* ---------- Hero: gallery cuộn ngang toàn màn ---------- */
.hero{position:relative;height:clamp(640px,calc(100vh - 100px),900px);background:var(--black)}
.hero::before{content:"";position:absolute;inset:0;background:repeating-conic-gradient(from 0deg at 50% 120%,rgba(201,162,39,.07) 0 1.6deg,transparent 1.6deg 8deg);pointer-events:none}
.strip{height:100%;display:flex;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none}
.strip::-webkit-scrollbar{display:none}
.slide{flex:0 0 100%;height:100%;scroll-snap-align:start;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:28px 6vw;gap:clamp(20px,4vw,60px)}
.slide .stepped{height:min(78vh,720px);aspect-ratio:3/4;max-width:100%}
.slide .ph{width:100%;height:100%}
.slide-side{font-family:var(--ff-s);letter-spacing:.35em;text-transform:uppercase;font-size:.72rem;color:var(--gold);text-align:center;line-height:2.2}
.slide-side--l{justify-self:end;text-align:right}
.slide-side--r{justify-self:start;text-align:left}
.slide-side b{display:block;font-family:var(--ff-h);text-transform:uppercase;font-size:clamp(1.3rem,2.4vw,2.2rem);letter-spacing:.08em;line-height:1.2;margin:8px 0;font-weight:400}
.slide-side .num{font-family:var(--ff-d);font-size:2.6rem;color:var(--gold-deep);display:block;letter-spacing:0}
.caption{position:absolute;left:50%;bottom:-14px;transform:translateX(-50%);background:var(--gold);color:var(--black);font-family:var(--ff-s);
  font-size:.72rem;letter-spacing:.3em;text-transform:uppercase;padding:8px 22px;white-space:nowrap;
  clip-path:polygon(10px 0,calc(100% - 10px) 0,100% 50%,calc(100% - 10px) 100%,10px 100%,0 50%)}
.arrow{position:absolute;top:50%;transform:translateY(-50%);width:54px;height:54px;border:1px solid var(--gold);color:var(--gold);display:grid;place-items:center;
  font-size:1rem;background:rgba(11,11,11,.7);transition:.2s;z-index:3}
.arrow:hover{background:var(--gold);color:var(--black)}
.arrow--l{left:18px}.arrow--r{right:18px}
.dots{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);display:flex;gap:14px;z-index:3}
.dots button{width:10px;height:10px;border:1px solid var(--gold);transform:rotate(45deg);transition:.2s}
.dots button.on{background:var(--gold)}
.hero-title{position:absolute;top:22px;left:0;right:0;text-align:center;z-index:2;pointer-events:none}
.hero-title .sub{font-size:.66rem}

/* ---------- Section chung ---------- */
.section{padding:clamp(60px,8vw,110px) 0;position:relative}
.section--alt{background:var(--black-2)}
.sec-head{margin-bottom:clamp(36px,5vw,60px)}
.sec-head h2{font-size:clamp(1.7rem,3.4vw,2.7rem)}
.sec-head .sub{margin-bottom:10px}
.sec-head p{margin-top:12px}

/* ---------- Gói chụp: 3 thẻ cao ---------- */
.pkgs{display:grid;grid-template-columns:repeat(3,1fr);gap:34px;align-items:stretch;position:relative}
.pkgs::before{content:"";position:absolute;left:50%;top:-40px;width:min(720px,100vw);height:460px;transform:translateX(-50%);
  background:repeating-conic-gradient(from -90deg at 50% 100%,rgba(201,162,39,.16) 0 2.5deg,transparent 2.5deg 8deg);
  -webkit-mask:linear-gradient(180deg,#000,transparent 95%);mask:linear-gradient(180deg,#000,transparent 95%);pointer-events:none}
.pkg{display:flex;flex-direction:column;text-align:center;padding:36px 30px 34px;position:relative}
.pkg .k{font-family:var(--ff-s);letter-spacing:.35em;text-transform:uppercase;font-size:.66rem;color:var(--muted)}
.pkg h3{font-size:1.45rem;margin:12px 0 4px}
.pkg .orn{margin:14px auto}
.pkg p{color:var(--cream-2);font-style:italic;min-height:3.2em}
.pkg ul{margin:18px 0 26px;text-align:left;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0}
.pkg li{padding:6px 0 6px 22px;position:relative;font-size:1.02rem}
.pkg li::before{content:"◆";position:absolute;left:0;top:9px;color:var(--gold);font-size:.55rem}
.pkg .btn{margin-top:auto;align-self:center}
.plate{background:linear-gradient(180deg,var(--gold-3),var(--gold));color:var(--black);font-family:var(--ff-d);font-size:1.5rem;font-weight:700;padding:14px 20px;margin:0 -8px 8px;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),50% 100%,0 calc(100% - 12px));letter-spacing:.02em}
.plate small{display:block;font-family:var(--ff);font-size:.72rem;letter-spacing:.25em;text-transform:uppercase;font-weight:600;margin-top:2px}
.pkg--mid{transform:translateY(-18px)}
.pkg--mid .ribbon{position:absolute;top:-1px;left:50%;transform:translateX(-50%);background:var(--gold);color:var(--black);font-family:var(--ff-s);font-size:.62rem;letter-spacing:.3em;text-transform:uppercase;padding:5px 18px;white-space:nowrap}

/* ---------- Bộ sưu tập: masonry đối xứng ---------- */
.masonry{columns:3;column-gap:22px}
.tile{break-inside:avoid;margin-bottom:22px;position:relative;display:block;overflow:hidden}
.tile .ph{width:100%;transition:filter .4s,transform .6s;outline:1px solid rgba(201,162,39,.3);outline-offset:-1px}
.tile.t-tall .ph{aspect-ratio:3/4}.tile.t-sq .ph{aspect-ratio:1}.tile.t-xt .ph{aspect-ratio:2/3}.tile.t-wide .ph{aspect-ratio:4/3}
.tile::before{content:"";position:absolute;inset:12px;border:1px solid var(--gold);opacity:0;transition:.35s;pointer-events:none;
  background:
   linear-gradient(var(--gold),var(--gold)) top left/22px 2px no-repeat,linear-gradient(var(--gold),var(--gold)) top left/2px 22px no-repeat,
   linear-gradient(var(--gold),var(--gold)) top right/22px 2px no-repeat,linear-gradient(var(--gold),var(--gold)) top right/2px 22px no-repeat,
   linear-gradient(var(--gold),var(--gold)) bottom left/22px 2px no-repeat,linear-gradient(var(--gold),var(--gold)) bottom left/2px 22px no-repeat,
   linear-gradient(var(--gold),var(--gold)) bottom right/22px 2px no-repeat,linear-gradient(var(--gold),var(--gold)) bottom right/2px 22px no-repeat}
.tile::after{content:attr(data-cap);position:absolute;left:50%;bottom:26px;transform:translate(-50%,10px);background:var(--black);color:var(--gold);
  font-family:var(--ff-s);font-size:.66rem;letter-spacing:.3em;text-transform:uppercase;padding:6px 16px;border:1px solid var(--gold);opacity:0;transition:.35s;white-space:nowrap}
.tile:hover::before,.tile:hover::after{opacity:1;transform:translate(-50%,0)}
.tile:hover::before{transform:none}
.tile:hover .ph{filter:grayscale(1) contrast(1.15) brightness(1.08);transform:scale(1.03)}
.filters{display:flex;justify-content:center;flex-wrap:wrap;gap:0;margin-bottom:40px;border:1px solid var(--gold)}
.filters button{padding:12px 26px;font-family:var(--ff-s);font-size:.72rem;letter-spacing:.3em;text-transform:uppercase;color:var(--cream-2);border-right:1px solid var(--gold);transition:.2s}
.filters button:last-child{border-right:0}
.filters button.on,.filters button:hover{background:var(--gold);color:var(--black)}
.tile.hide{display:none}

/* ---------- Lịch: tờ chương trình nhà hát ---------- */
.programme{max-width:820px;margin:0 auto;background:var(--black-2)}
.programme .head{text-align:center;padding:0 0 18px;border-bottom:1px solid var(--gold);margin-bottom:6px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px}
.programme .head h3{font-size:1.4rem;letter-spacing:.12em}
.programme .head .sub{display:block;font-size:.62rem;margin-top:6px}
.programme .head button{width:40px;height:40px;border:1px solid var(--gold);color:var(--gold);font-size:.85rem}
.programme .head button:hover{background:var(--gold);color:var(--black)}
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:0;border-left:1px solid var(--line);border-top:1px solid var(--line)}
.cal .wd{font-family:var(--ff-s);font-size:.62rem;letter-spacing:.3em;text-transform:uppercase;color:var(--gold);text-align:center;padding:10px 0;border-right:1px solid var(--line);border-bottom:1px solid var(--gold)}
.cal .d{aspect-ratio:1.15;border-right:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;place-items:center;font-family:var(--ff-d);font-size:1rem;color:var(--cream);position:relative;transition:.2s;cursor:pointer;font-weight:400}
.cal .d small{position:absolute;bottom:6px;left:0;right:0;text-align:center;font-family:var(--ff-s);font-size:.56rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.cal .d.empty{cursor:default;background:repeating-linear-gradient(45deg,transparent 0 6px,rgba(201,162,39,.06) 6px 7px)}
.cal .d.free:hover{background:var(--black-3);color:var(--gold)}
.cal .d.booked{color:var(--gold-dim);cursor:not-allowed;background:repeating-linear-gradient(-45deg,transparent 0 5px,rgba(201,162,39,.12) 5px 6px)}
.cal .d.booked::after{content:"";position:absolute;left:30%;right:30%;top:50%;height:1px;background:var(--gold-dim)}
.cal .d.sel{background:var(--gold);color:var(--black)}
.cal .d.sel small{color:var(--black)}
.legend{display:flex;justify-content:center;gap:28px;margin-top:18px;font-family:var(--ff-s);font-size:.66rem;letter-spacing:.25em;text-transform:uppercase;color:var(--muted);flex-wrap:wrap}
.legend i{display:inline-block;width:12px;height:12px;border:1px solid var(--gold);vertical-align:-2px;margin-right:8px}
.legend i.b{background:repeating-linear-gradient(-45deg,transparent 0 3px,var(--gold-dim) 3px 4px)}
.legend i.s{background:var(--gold)}
.picked{text-align:center;margin-top:22px;font-size:1.15rem;font-style:italic;color:var(--cream-2)}
.picked b{color:var(--gold);font-style:normal;font-family:var(--ff-h);font-weight:400}

/* ---------- Quy trình: sơ đồ hình quạt / vòm ---------- */
.fan{position:relative;max-width:980px;margin:0 auto;padding-top:clamp(120px,22vw,220px)}
.fan svg.arch{position:absolute;left:50%;top:0;transform:translateX(-50%);width:min(900px,100%);height:auto;pointer-events:none}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{text-align:center;padding:0 10px}
.step:nth-child(1),.step:nth-child(4){transform:translateY(40px)}
.steps--flat .step{transform:none}
.step .n{width:64px;height:64px;margin:0 auto 16px;display:grid;place-items:center;font-family:var(--ff-d);font-size:1.3rem;color:var(--black);background:var(--gold);
  clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}
.step h3{font-size:1.02rem;letter-spacing:.1em;margin-bottom:8px}
.step p{color:var(--cream-2);font-size:1rem}

/* ---------- Studio ---------- */
.studio{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center}
.studio .stepped .ph{aspect-ratio:4/3;width:100%}
.studio .pair{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.studio .pair .ph{aspect-ratio:3/4}
.studio h2{text-align:left}
.studio .sub{text-align:left}
.specs{display:grid;grid-template-columns:1fr 1fr;gap:12px 24px;margin-top:22px;border-top:1px solid var(--line);padding-top:18px}
.specs div{font-size:1rem}
.specs b{display:block;font-family:var(--ff-d);color:var(--gold);font-size:1.3rem;font-weight:400}

/* ---------- Cảm nhận ---------- */
.quotes{display:grid;grid-template-columns:repeat(3,1fr);position:relative}
.quotes > div{padding:0 28px;text-align:center;position:relative}
.quotes > div + div{border-left:1px solid var(--line)}
.quotes p{font-style:italic;font-size:1.12rem;color:var(--cream)}
.quotes cite{display:block;margin-top:16px;font-style:normal;font-family:var(--ff-s);font-size:.68rem;letter-spacing:.3em;text-transform:uppercase;color:var(--gold)}
.bigq{text-align:center;font-family:var(--ff-d);font-size:5rem;line-height:.6;margin:10px 0 24px;background:var(--metal);-webkit-background-clip:text;background-clip:text;color:transparent}
.stars{color:var(--gold);letter-spacing:.3em;font-size:.8rem;margin-top:6px}

/* ---------- CTA dải ---------- */
.cta{text-align:center;padding:clamp(60px,8vw,100px) 0;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:repeating-conic-gradient(from 0deg at 50% 50%,rgba(201,162,39,.08) 0 3deg,transparent 3deg 12deg)}
.cta .container{position:relative}
.cta h2{font-size:clamp(1.7rem,3.6vw,2.8rem)}

/* ---------- Bảng gói chi tiết / add-on ---------- */
.tbl-wrap{overflow-x:auto;border:1px solid var(--gold)}
table.tbl{width:100%;border-collapse:collapse;min-width:700px}
.tbl th,.tbl td{padding:14px 18px;border-bottom:1px solid var(--line);text-align:center;font-size:1.02rem}
.tbl th{font-family:var(--ff-s);letter-spacing:.3em;text-transform:uppercase;font-size:.7rem;color:var(--gold);background:var(--black-2);border-bottom:1px solid var(--gold)}
.tbl td:first-child,.tbl th:first-child{text-align:left}
.tbl td:first-child{font-family:var(--ff-s);letter-spacing:.12em;color:var(--cream-2)}
.tbl tr:last-child td{border-bottom:0}
.tbl .y{color:var(--gold)}.tbl .n{color:var(--gold-dim)}
.tbl td.mid{background:rgba(201,162,39,.06)}
.addons{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.addon{border:1px solid var(--line);padding:24px;display:flex;justify-content:space-between;gap:14px;align-items:flex-start;transition:.2s}
.addon:hover{border-color:var(--gold)}
.addon h4{text-align:left;font-size:.95rem;letter-spacing:.1em}
.addon p{font-size:.98rem;color:var(--cream-2);margin-top:6px}
.addon .price{font-family:var(--ff-d);color:var(--gold);white-space:nowrap;font-size:1.05rem}
.concepts{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.concept{text-align:center}
.concept .ph{aspect-ratio:3/4;width:100%}
.concept h4{font-size:.95rem;margin-top:14px;letter-spacing:.12em}
.concept p{font-size:.95rem;color:var(--muted);font-style:italic}

/* ---------- Form ---------- */
.form{max-width:760px;margin:0 auto}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:26px 34px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-family:var(--ff-s);font-size:.66rem;letter-spacing:.3em;text-transform:uppercase;color:var(--gold)}
.field input,.field select,.field textarea{background:transparent;border:0;border-bottom:1px solid var(--gold-deep);color:var(--cream);font-family:var(--ff);font-size:1.1rem;padding:10px 0;outline:0;transition:.2s;border-radius:0}
.field input:focus,.field select:focus,.field textarea:focus{border-bottom:1px solid var(--gold);box-shadow:0 1px 0 var(--gold)}
.field select option{background:var(--black-2);color:var(--cream)}
.field textarea{resize:vertical;min-height:110px}
.field.full{grid-column:1/-1}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px}
.chips input{position:absolute;opacity:0;width:0;height:0}
.chips label{border:1px solid var(--gold-deep);padding:7px 16px;font-family:var(--ff-s);font-size:.7rem;letter-spacing:.2em;color:var(--cream-2);cursor:pointer;transition:.2s}
.chips input:checked + label,.chips label:hover{background:var(--gold);color:var(--black);border-color:var(--gold)}
.form .btn-row{margin-top:36px}
.note{font-size:.95rem;color:var(--muted);text-align:center;margin-top:16px;font-style:italic}
.booking{display:grid;grid-template-columns:1.1fr 1fr;gap:44px;align-items:start}
.booking .programme{max-width:none}

/* ---------- Liên hệ ---------- */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.info-list li{display:grid;grid-template-columns:110px 1fr;gap:14px;padding:14px 0;border-bottom:1px solid var(--line);font-size:1.05rem}
.info-list li span{font-family:var(--ff-s);font-size:.66rem;letter-spacing:.3em;text-transform:uppercase;color:var(--gold);padding-top:5px}
.map{aspect-ratio:4/3;background:var(--black-2);position:relative;display:grid;place-items:center;overflow:hidden}
.map::before{content:"";position:absolute;inset:0;background:
  linear-gradient(var(--line) 1px,transparent 1px) 0 0/56px 56px,linear-gradient(90deg,var(--line) 1px,transparent 1px) 0 0/56px 56px;opacity:.6}
.map .pin{position:relative;text-align:center;font-family:var(--ff-s);letter-spacing:.3em;text-transform:uppercase;font-size:.7rem;color:var(--gold)}
.map .pin i{display:block;width:18px;height:18px;background:var(--gold);transform:rotate(45deg);margin:0 auto 16px}
.map .road{position:absolute;background:var(--gold-dim);opacity:.5}
.hours{display:grid;grid-template-columns:1fr 1fr;gap:8px 20px;font-size:1.02rem}
.hours span{color:var(--gold)}

/* ---------- Page hero (trang trong) ---------- */
.page-hero{padding:clamp(50px,7vw,90px) 0 clamp(30px,5vw,50px);text-align:center;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:repeating-conic-gradient(from -90deg at 50% 0,rgba(201,162,39,.1) 0 2deg,transparent 2deg 8deg);
  -webkit-mask:linear-gradient(180deg,#000,transparent);mask:linear-gradient(180deg,#000,transparent);pointer-events:none}
.page-hero h1{font-size:clamp(2rem,4.5vw,3.4rem);position:relative}
.page-hero .lead{position:relative}
.crumb{font-family:var(--ff-s);font-size:.64rem;letter-spacing:.35em;text-transform:uppercase;color:var(--muted);margin-bottom:14px;position:relative}
.crumb a:hover{color:var(--gold)}

/* ---------- Lightbox ---------- */
.lb{position:fixed;inset:0;background:rgba(11,11,11,.94);z-index:100;display:none;place-items:center;padding:40px}
.lb.open{display:grid}
.lb .stepped{height:min(84vh,860px);aspect-ratio:3/4;max-width:92vw}
.lb .ph{width:100%;height:100%}
.lb .caption{bottom:-16px}
.lb .arrow--l{left:24px}.lb .arrow--r{right:24px}
.lb .close{position:absolute;top:20px;right:24px;width:48px;height:48px;border:1px solid var(--gold);color:var(--gold);font-family:var(--ff-s);font-size:1.3rem}
.lb .close:hover{background:var(--gold);color:var(--black)}
.lb .count{position:absolute;top:32px;left:50%;transform:translateX(-50%);font-family:var(--ff-s);letter-spacing:.35em;color:var(--gold);font-size:.7rem}

/* ---------- Footer ---------- */
.footer{position:relative;background:var(--black-2);padding:0 0 30px;overflow:hidden;border-top:1px solid var(--gold)}
.footer::before{content:"";position:absolute;left:50%;top:0;width:min(1200px,140vw);height:440px;transform:translateX(-50%);
  background:repeating-conic-gradient(from -90deg at 50% 0,rgba(201,162,39,.13) 0 2deg,transparent 2deg 7deg);
  -webkit-mask:linear-gradient(180deg,#000,transparent);mask:linear-gradient(180deg,#000,transparent);pointer-events:none}
.footer .container{position:relative}
.f-top{text-align:center;padding:56px 0 34px}
.f-top .mono{margin:0 auto 14px}
.f-top h3{font-size:1.4rem;letter-spacing:.2em;font-family:var(--ff-d)}
.f-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;padding:36px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.f-cols h4{text-align:left;font-size:.8rem;letter-spacing:.3em;margin-bottom:14px;font-family:var(--ff-s);color:var(--gold)}
.f-cols li{padding:4px 0;font-size:1rem;color:var(--cream-2)}
.f-cols a:hover{color:var(--gold)}
.f-bot{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;padding-top:22px;font-family:var(--ff-s);font-size:.66rem;letter-spacing:.25em;text-transform:uppercase;color:var(--muted)}

/* ---------- Responsive ---------- */
@media (max-width:1100px){
  .slide{grid-template-columns:1fr;padding:60px 6vw 70px}
  .slide-side{display:none}
  .slide .stepped{height:min(70vh,640px)}
  .concepts{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:980px){
  .header .container{grid-template-columns:auto 1fr auto}
  .nav{display:none;grid-column:1/-1;order:5;border-top:1px solid var(--line);margin-top:12px;padding-top:10px}
  .nav.is-open{display:block}
  .nav ul{flex-direction:column;gap:4px;align-items:center}
  .nav .nav-l,.nav .nav-r{justify-self:center;justify-content:center}
  .nav a{display:block;padding:10px}
  .mono{order:1;margin:0}
  .brand-line{grid-column:2;order:2;margin:0;text-align:left;font-size:.56rem}
  .burger{display:grid;order:3}
  .brand-line{display:none}
  .pkgs{grid-template-columns:1fr;max-width:460px;margin:0 auto}
  .pkg--mid{transform:none}
  .masonry{columns:2}
  .steps{grid-template-columns:repeat(2,1fr);gap:40px 22px}
  .step:nth-child(1),.step:nth-child(4){transform:none}
  .fan{padding-top:0}.fan svg.arch{display:none}
  .studio,.booking,.contact{grid-template-columns:1fr}
  .quotes{grid-template-columns:1fr;gap:30px}
  .quotes > div + div{border-left:0;border-top:1px solid var(--line);padding-top:30px}
  .addons{grid-template-columns:1fr 1fr}
  .f-cols{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:17px}
  .hero{height:auto;min-height:0}
  .slide{padding:70px 5vw 70px}
  .slide .stepped{height:auto;width:100%;aspect-ratio:3/4}
  .arrow{width:42px;height:42px}
  .caption{font-size:.6rem;padding:7px 14px;max-width:88vw;white-space:normal;text-align:center}
  .masonry{columns:2;column-gap:12px}.tile{margin-bottom:12px}
  .steps{grid-template-columns:1fr}
  .studio .pair{grid-template-columns:1fr 1fr}
  .grid-2{grid-template-columns:1fr}
  .addons,.concepts{grid-template-columns:1fr}
  .f-cols{grid-column:1fr;grid-template-columns:1fr}
  .cal .d{font-size:.85rem}.cal .d small{display:none}
  .programme .head h3{font-size:1rem}
  .info-list li{grid-template-columns:1fr;gap:4px}
  .filters button{padding:10px 14px;font-size:.62rem;flex:1 1 auto;border-bottom:1px solid var(--line)}
}