/* Website cưới Nhung & Linh. TỆP NÀY DO build.py TẠO RA: sửa index-v2.html hoặc build/live.css rồi chạy lại build.py.
   Trang cuộn bên trong .site (không cuộn body) để các hiệu ứng tính theo khung .screen cố định toàn màn hình. */
html,body{height:100%;margin:0;background:#EFEDEA;overscroll-behavior:none}
*{box-sizing:border-box}
body{-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}
button,input,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid #7D2B45;outline-offset:2px}
.screen{position:fixed;inset:0;overflow:hidden;container-type:size;container-name:site;
  --paper:#EFEDEA;--ink:#231D22;--sub:#5E555A;--wine:#7D2B45;--gold:#B8924F;--bark:#8A7570;--hair:rgba(35,29,34,.13);--night:#F7F1E6;
  --fd:"Fraunces",Georgia,serif;--fb:"Be Vietnam Pro",system-ui,sans-serif;
  background:var(--paper);color:var(--ink);font-family:var(--fb)}
#fx{position:absolute;inset:0;width:100%;height:100%;display:block;z-index:0;pointer-events:none}
.site{position:absolute;inset:0;z-index:1;overflow-y:auto;overflow-x:hidden;scrollbar-width:none;-webkit-font-smoothing:antialiased;overscroll-behavior:contain;font-size:16px;line-height:1.65;font-weight:400}
.site::-webkit-scrollbar{display:none}
.site h1,.site h2,.site h3,.site p{margin:0}
.site button{cursor:pointer}

/* hoa vẽ vector: cánh ngà, nhuỵ đỏ rượu, bao phấn vàng, lá xanh xám */
.art{overflow:visible;pointer-events:none;display:block;fill:none;stroke-linecap:round;stroke-linejoin:round}
.art path{vector-effect:non-scaling-stroke}
/* cành vẽ dần bằng dash: không dùng non-scaling-stroke vì Chrome tính dash sai khi SVG bị phóng to */
.art .bk path{stroke:var(--bark);vector-effect:none}
.art .pt{fill:url(#gPk);stroke:rgba(125,43,69,.3);stroke-width:.6}
.art .pt.w{fill:url(#gWh);stroke:rgba(125,43,69,.22)}
.art .st{stroke:#7D2B45;stroke-width:.6}
.art .sd{fill:#C9A24F;stroke:none}
.art .lv{fill:url(#gLf);stroke:rgba(80,92,65,.28);stroke-width:.5}
.art .rb{stroke:rgba(255,255,255,.5);stroke-width:.6}
.art .bd{fill:url(#gBd);stroke:rgba(125,43,69,.28);stroke-width:.5}
.art .cx{fill:#9AA58A;stroke:none}
.aline{position:absolute;pointer-events:none;overflow:visible}
.aline path{fill:none;stroke:url(#gLine);stroke-width:1.2;vector-effect:non-scaling-stroke}

.eb{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--wine);font-weight:500}
.h2{font:350 44px/1.04 var(--fd);font-variation-settings:"SOFT" 100,"opsz" 144;letter-spacing:-.02em}
.lede{color:var(--sub);max-width:34ch}

/* hiện dần khi cuộn tới */
.rv{opacity:0;transform:translateY(28px);transition:opacity .9s ease,transform 1.1s cubic-bezier(.2,.8,.2,1)}
.rv.in{opacity:1;transform:none;filter:none}
.w{display:inline-block;opacity:0;transform:translateY(.5em) rotate(4deg);transform-origin:0 100%;
  transition:opacity .8s ease calc(var(--i)*80ms),transform 1s cubic-bezier(.2,.8,.2,1) calc(var(--i)*80ms)}
.in .w{opacity:1;transform:none;filter:none}

/* thanh trên */
.top{position:absolute;top:0;left:0;right:0;z-index:3;display:flex;justify-content:space-between;align-items:center;padding:16px 18px;pointer-events:none}
.top::before{content:"";position:absolute;inset:0 0 -26px;background:linear-gradient(var(--paper) 50%,transparent);opacity:0;transition:opacity .5s}
.top.sc::before{opacity:1}
.mono{position:relative;font:400 20px/1 var(--fd);font-variation-settings:"SOFT" 100,"opsz" 40;color:var(--ink);pointer-events:auto;transition:color .6s}
.mono span{color:var(--wine);margin:0 .06em;transition:color .6s}
.chip svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.chip{position:relative;pointer-events:auto;display:inline-flex;align-items:center;gap:6px;min-height:38px;padding:0 13px;font:500 10px/1 var(--fb);letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink);background:rgba(250,248,245,.88);border:1px solid rgba(35,29,34,.28);border-radius:999px;cursor:pointer;transition:background .35s,color .35s,border-color .35s}
.chip:hover{background:var(--ink);color:#F7F1E6;border-color:var(--ink)}
.top.dk::before{opacity:0}
.top.dk .mono{color:var(--night)}.top.dk .mono span{color:#D9B57A}
.top.dk .chip{background:rgba(20,16,22,.4);color:var(--night);border-color:rgba(247,241,230,.4)}
.top.dk .chip:hover{background:var(--night);color:var(--ink)}

/* ---------- 1. mở đầu: vòm ảnh ---------- */
.hero{position:relative;height:250cqh;z-index:1}
.h-in{position:sticky;top:0;height:100cqh;overflow:hidden;display:flex;flex-direction:column;align-items:center;padding-top:10cqh}
.h-ph{position:absolute;inset:0;overflow:hidden}
.h-ph img{position:absolute;width:100%;height:100%;object-fit:cover;object-position:50% 16%;display:block;transform-origin:50% 50%;will-change:transform;transition:opacity 1.6s ease .5s}
.h-dim{position:absolute;inset:0;background:#141016;opacity:0;pointer-events:none}
.h-fade{position:absolute;background:linear-gradient(rgba(239,237,234,0),#EFEDEA 92%);pointer-events:none}
.h-arch{position:relative;width:86cqw;aspect-ratio:3/4.1;flex:none;z-index:1}
.h-arch .aline{inset:-9px;width:calc(100% + 18px);height:calc(100% + 18px)}
.h-br{position:absolute;left:-12%;top:-10%;width:124%;height:120%}
.h-tx{position:relative;z-index:2;margin-top:-12cqh;display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;padding:0 24px}
.names{font:300 clamp(60px,18.5cqw,96px)/.9 var(--fd);font-variation-settings:"SOFT" 100,"opsz" 144;letter-spacing:-.035em}
.names .ln{display:block}
.names .amp{color:var(--wine);font-weight:200;margin-right:.04em}
.ch{display:inline-block;transition:opacity 1s ease,transform 1.3s cubic-bezier(.2,.8,.2,1),filter 1s ease;transition-delay:calc(1.1s + var(--i)*55ms)}
.h-inv{color:var(--sub);max-width:30ch;transition:opacity 1s ease 2s,transform 1.2s cubic-bezier(.2,.8,.2,1) 2s}
.h-when{font-size:15px;font-weight:500;line-height:1.5;transition:opacity 1s ease 2.2s,transform 1.2s cubic-bezier(.2,.8,.2,1) 2.2s}
.h-when span{display:block;font-weight:400;color:var(--sub)}
.cue{position:absolute;bottom:3.5cqh;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--sub);transition:opacity 1s ease 3s}
.cue i{width:1px;height:34px;background:linear-gradient(var(--wine),rgba(125,43,69,0));transform-origin:top;animation:cue 2.4s cubic-bezier(.6,0,.3,1) infinite}
@keyframes cue{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
.intro .h-ph img{opacity:0}
.intro .ch{opacity:0;transform:translateY(.45em) rotate(6deg);filter:blur(8px)}
.intro .h-inv,.intro .h-when{opacity:0;transform:translateY(14px)}
.intro .cue{opacity:0}
.intro .aline path{stroke-dashoffset:1}
.aline path{stroke-dasharray:1;stroke-dashoffset:0;transition:stroke-dashoffset 2.2s cubic-bezier(.6,0,.2,1) .15s}

/* ---------- 2. tấm giấy trượt lên: ba nhịp ---------- */
.inf{position:relative;z-index:2;margin-top:-100cqh;height:330cqh;background:var(--paper);border-radius:30px 30px 0 0;box-shadow:0 -40px 50px -20px rgba(25,18,24,.28)}
.i-in{position:sticky;top:0;height:100cqh;overflow:hidden;border-radius:30px 30px 0 0}
.i-br{position:absolute;top:0;right:0;width:100%;height:36cqh;transform-origin:100% 0}
.beat{position:absolute;left:0;right:0;top:39cqh;padding:0 28px;display:flex;flex-direction:column;gap:14px;will-change:transform,opacity}
.big{font:300 min(27cqw,19cqh)/.88 var(--fd);font-variation-settings:"SOFT" 100,"opsz" 144;letter-spacing:-.045em;display:flex;flex-direction:column}
.big .w2{color:var(--wine)}
.dg{display:inline-block;overflow:hidden;vertical-align:top;padding:0 .01em .1em;margin-bottom:-.04em}
.dg i{display:block;font-style:normal;will-change:transform}
.bsub{color:var(--sub);font-size:16px}
.rule{height:1px;background:rgba(35,29,34,.2);transform-origin:left}
.venue{display:flex;flex-direction:column;gap:2px;padding-top:4px}
.venue small{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--wine);font-weight:500}
.venue b{font:400 27px/1.2 var(--fd);font-variation-settings:"SOFT" 100,"opsz" 40;margin-top:4px}
.venue span{color:var(--sub);font-size:15.5px}
.cd{display:grid;grid-template-columns:repeat(4,1fr)}
.cd div{display:flex;flex-direction:column;align-items:flex-start}
.cd b{font:300 min(13cqw,64px)/1 var(--fd);font-variation-settings:"SOFT" 100,"opsz" 144;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.cd small{font-size:13px;color:var(--sub);margin-top:4px}
.acts{display:flex;flex-direction:column;margin-top:10px}
.act{display:flex;align-items:center;gap:14px;min-height:58px;padding:0 2px;border:0;border-top:1px solid rgba(35,29,34,.16);background:none;color:var(--ink);font:500 15.5px var(--fb);text-align:left}
.act:last-child{border-bottom:1px solid rgba(35,29,34,.16)}
.act svg{width:21px;height:21px;fill:none;stroke:var(--wine);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex:none}
.act .go{margin-left:auto;width:18px;height:18px;stroke:var(--sub);transition:transform .3s}
.act:hover .go{transform:translateX(4px)}
.rail{position:absolute;left:28px;bottom:4cqh;display:flex;align-items:center;gap:12px;font:500 12px var(--fb);letter-spacing:.12em;color:var(--sub);font-variant-numeric:tabular-nums}
.rail i{position:relative;width:84px;height:1px;background:rgba(35,29,34,.16)}
.rail i b{position:absolute;inset:0;background:var(--wine);transform-origin:left;transform:scaleX(0)}
.rail #railN{color:var(--wine)}

/* ---------- ảnh: mở như cánh cửa vòm ---------- */
.fr{position:relative;overflow:hidden;background:#E4E1DD}
.fr img{position:absolute;left:0;top:-8%;width:100%;height:116%;object-fit:cover;object-position:50% 25%;display:block;will-change:transform}
.pf{position:relative;padding:10cqh 0 2cqh;display:flex;justify-content:center}
.pf .fr{width:78cqw;aspect-ratio:3/4.1;border-radius:999px 999px 20px 20px}
.pf .art{position:absolute;width:52cqw;aspect-ratio:1}
.pf .art.l{left:-6cqw;bottom:-6cqw}.pf .art.r{right:-6cqw;bottom:-4cqw}
.cl{position:relative;height:120cqw;margin:6cqh 0 2cqh}
.cl .fr{position:absolute}
.cl .a{left:24px;top:0;width:60cqw;aspect-ratio:3/4;border-radius:999px 999px 18px 18px}
.cl .b{right:20px;top:66cqw;width:46cqw;aspect-ratio:1;border-radius:50%}
.cl .art{position:absolute;right:-8cqw;top:30cqw;width:56cqw;aspect-ratio:1}

/* ---------- lịch trình ---------- */
.sch{position:relative;padding:12cqh 24px 4cqh}
.sch-h{display:flex;flex-direction:column;gap:8px;margin-bottom:30px}
.tl{position:relative;padding-left:30px;display:flex;flex-direction:column}
.tl-line{position:absolute;left:5px;top:10px;bottom:10px;width:1.5px;background:var(--wine);opacity:.5;transform-origin:top;transform:scaleY(0)}
.tl-row{position:relative;padding:0 0 28px}
.tl-row::before{content:"";position:absolute;left:-30px;top:8px;width:12px;height:12px;border-radius:50%;border:1.5px solid var(--wine);background:var(--paper);transform:scale(.6);transition:transform .6s cubic-bezier(.3,1.8,.5,1),background .4s}
.tl-row.on::before{transform:scale(1);background:var(--wine)}
.tl-row .n{font:400 26px/1.2 var(--fd);font-variation-settings:"SOFT" 100,"opsz" 40;color:var(--wine);font-variant-numeric:tabular-nums}
.tl-row b{display:block;font-weight:500;font-size:17px;margin-top:2px}
.tl-row span{color:var(--sub);font-size:15px}

/* ---------- album: hai cột chạy ngược chiều ---------- */
.gal{padding:12cqh 0 2cqh}
.gal-h{display:flex;flex-direction:column;gap:8px;padding:0 24px 24px}
.mq{position:relative;height:96cqh;overflow:hidden;display:flex;gap:12px;padding:0 14px;
  -webkit-mask-image:linear-gradient(transparent,#000 9%,#000 91%,transparent);mask-image:linear-gradient(transparent,#000 9%,#000 91%,transparent)}
.mcol{flex:1;min-width:0}
.mtrack{display:flex;flex-direction:column;gap:12px;will-change:transform}
.gi{position:relative;padding:0;border:0;background:#E4E1DD;overflow:hidden;aspect-ratio:3/4;display:block;width:100%;flex:none;transition:transform .5s cubic-bezier(.2,.8,.2,1)}
.gi:active{transform:scale(.97)}
.gi img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 25%;display:block}
.gi.s0{border-radius:999px 999px 18px 18px}
.gi.s1{border-radius:50%;aspect-ratio:1}
.gi.s2{border-radius:80px 8px 80px 8px}
.gi.s3{border-radius:18px 18px 999px 999px}

/* ---------- xác nhận ---------- */
.rs{position:relative;padding:calc(3cqh + 36cqw) 24px 4cqh}
.rs>.art{position:absolute;right:-2cqw;top:1cqh;width:40cqw;aspect-ratio:1}
.rs-h{display:flex;flex-direction:column;gap:10px;margin-bottom:26px;position:relative}
.form{display:flex;flex-direction:column;gap:20px}
.field{display:flex;flex-direction:column;gap:2px;font-size:13px;color:var(--sub)}
.field input,.field textarea{background:transparent;border:0;border-bottom:1px solid rgba(35,29,34,.25);border-radius:0;padding:10px 0;color:var(--ink);font:400 18px/1.4 var(--fb);outline:none;resize:none}
.field input:focus,.field textarea:focus{border-bottom-color:var(--wine)}
.field input::placeholder,.field textarea::placeholder{color:#8A8185;font-weight:400}
.yn{position:relative;display:grid;grid-template-columns:1fr 1fr;padding:4px;border:1px solid rgba(35,29,34,.24);border-radius:999px;background:rgba(255,255,255,.35)}
.yn::before{content:"";position:absolute;top:4px;bottom:4px;left:4px;width:calc(50% - 4px);border-radius:999px;background:var(--ink);transition:transform .5s cubic-bezier(.3,1.25,.5,1)}
.yn.r::before{transform:translateX(100%)}
.yn button{position:relative;z-index:1;display:flex;align-items:center;justify-content:center;gap:7px;min-height:48px;border:0;background:transparent;color:var(--ink);border-radius:999px;padding:0 8px;font:500 14.5px var(--fb);transition:color .35s}
.yn svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;display:none}
.yn button[aria-checked="true"]{color:#F7F1E6}
.yn button[aria-checked="true"] svg{display:block}
.form.no .stp{display:none}
.field .err-msg{display:none;color:#A1332B;font-size:13px;padding-top:6px}
.field.err input{border-bottom-color:#A1332B}
.field.err .err-msg{display:block}
.stp{display:flex;align-items:center;justify-content:space-between;padding:6px 0;border-bottom:1px solid rgba(35,29,34,.25)}
.stp span{font-size:15px}
.stp div{display:flex;align-items:center;gap:14px}
.stp output{font:400 24px var(--fd);min-width:24px;text-align:center}
.stp button:disabled{opacity:.3;cursor:default}
.stp button{width:44px;height:44px;border-radius:50%;border:1px solid rgba(35,29,34,.28);background:transparent;color:var(--ink);font:300 22px/1 var(--fd);transition:background .3s,color .3s}
.stp button:not(:disabled):hover{background:var(--ink);color:#F7F1E6}
.submit{display:flex;align-items:center;justify-content:space-between;min-height:60px;margin-top:6px;padding:0 8px 0 28px;border:0;border-radius:999px;background:var(--ink);color:#F7F1E6;
  font:500 12px/1 var(--fb);letter-spacing:.18em;text-transform:uppercase;transition:background .35s,transform .2s}
.submit .go{width:44px;height:44px;border-radius:50%;background:#F7F1E6;color:var(--ink);display:grid;place-items:center;transition:transform .45s cubic-bezier(.3,1.4,.5,1)}
.submit .go svg,.totop svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.submit:hover{background:var(--wine)}.submit:hover .go{transform:translateX(4px)}.submit:active{transform:scale(.985)}
.done{display:none;flex-direction:column;align-items:flex-start;gap:12px}
.dn-mark{position:relative;width:120px;height:120px;margin:0 0 6px -4px}
.dn-mark .sh{transition-duration:1.3s,1.3s;transition-delay:calc(var(--i)*30ms)}
.sent .form{display:none}.sent .done{display:flex}

/* ---------- mừng cưới ---------- */
.gift{padding:12cqh 24px 4cqh;display:flex;flex-direction:column;gap:10px}
.qr2{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:18px}
.bank{display:flex;flex-direction:column;gap:10px;padding:10px 10px 4px;border:1px solid var(--hair);border-radius:20px;background:rgba(255,255,255,.6)}
img.qr,canvas.qr{width:100%;aspect-ratio:1;image-rendering:pixelated;background:#fff;border-radius:12px;padding:8px;display:block}
.who{display:flex;flex-direction:column;padding:0 4px}
.who b{font:400 21px/1.2 var(--fd);font-variation-settings:"SOFT" 100,"opsz" 40}
.who span{font-size:13px;color:var(--sub)}
.acct{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--hair);padding:2px 0 0 4px;font-size:13.5px;font-variant-numeric:tabular-nums;white-space:nowrap}
.acct button{width:44px;height:44px;flex:none;margin-right:-4px;border:0;background:transparent;color:var(--wine);display:grid;place-items:center;border-radius:50%}
.acct svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}

/* ---------- kết: vòm mở ra, trời tối, pháo hoa ---------- */
.end{position:relative;height:270cqh;margin-top:10cqh}
.e-in{position:sticky;top:0;height:100cqh;overflow:hidden;display:flex;flex-direction:column;align-items:center;padding-top:12cqh}
.e-ph{position:absolute;inset:0;overflow:hidden}
.e-ph img{position:absolute;width:100%;height:100%;object-fit:cover;object-position:50% 62%;display:block;transform-origin:50% 50%;will-change:transform}
.e-night{position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,12,20,.9) 0%,rgba(16,12,20,.62) 40%,rgba(16,12,20,.18) 66%,rgba(16,12,20,.55) 100%);opacity:0}
.e-arch{position:relative;width:70cqw;aspect-ratio:3/4.1;flex:none}
.e-arch .aline{inset:-9px;width:calc(100% + 18px);height:calc(100% + 18px)}
.e-arch .aline path{stroke-dashoffset:var(--d,1);transition:none}
.e-pre{position:relative;margin-top:5cqh;display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center}
.e-pre p:last-child{max-width:24ch;text-wrap:balance;font:350 23px/1.25 var(--fd);font-variation-settings:"SOFT" 100,"opsz" 40}
canvas.e-fx{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.e-tx{position:absolute;left:0;right:0;top:13cqh;display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;color:var(--night);padding:0 24px}
.e-tx h2{text-wrap:balance;font:350 clamp(50px,14.5cqw,112px)/.98 var(--fd);font-variation-settings:"SOFT" 100,"opsz" 144;letter-spacing:-.03em}
.e-tx h2 .ew{display:inline-block}
.e-tx p{color:rgba(247,241,230,.75);font-size:15px;letter-spacing:.04em}
.totop{display:inline-flex;align-items:center;gap:10px;margin-top:3cqh;min-height:46px;padding:0 22px 0 18px;font:500 11px/1 var(--fb);letter-spacing:.16em;text-transform:uppercase;color:var(--night);background:transparent;border:1px solid rgba(247,241,230,.45);border-radius:999px;cursor:pointer;transition:background .35s,color .35s}
.totop:hover{background:var(--night);color:var(--ink)}

/* dấu ấn 24 mảnh tam giác, tự xếp lại thành hình mới ở mỗi chặng */
.sh{position:absolute;inset:0;clip-path:polygon(50% 50%,50% 50%,50% 50%);transition:clip-path .9s cubic-bezier(.62,.02,.34,1),background-color .9s ease;transition-delay:calc(var(--i)*16ms)}

.rs>.bed{position:relative;display:block;top:auto;right:auto;aspect-ratio:auto;width:calc(100% + 48px);height:110px;margin:7cqh -24px 0}

/* chặng 24 mảnh lớn */
.story{position:relative;height:360cqh}
.st-in{position:sticky;top:0;height:100cqh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5cqh;padding:0 24px}
.st-mark{position:relative;width:min(72cqw,46cqh);aspect-ratio:1;will-change:transform}
.st-mark .sh{transition:none;will-change:clip-path}
.st-cap{position:relative;width:100%;height:96px}
.st-c{position:absolute;inset:0;text-align:center;font:350 30px/1.2 var(--fd);font-variation-settings:"SOFT" 100,"opsz" 40;text-wrap:balance;opacity:0;transform:translateY(18px)}
.st-c small{display:block;margin-bottom:10px;font:500 12px var(--fb);letter-spacing:.16em;text-transform:uppercase;color:var(--wine)}
.st-dots{display:flex;gap:8px}
.st-dots i{width:24px;height:2px;border-radius:2px;background:rgba(35,29,34,.16);transition:background .4s,width .4s}
.st-dots i.on{width:40px;background:var(--wine)}
.e-tx h2 .ew:nth-child(2){color:#D9B57A}

/* xem ảnh lớn */
.lb{position:absolute;inset:0;z-index:6;background:rgba(239,237,234,.97);display:grid;grid-template-rows:auto minmax(0,1fr) auto;color:var(--ink);opacity:0;pointer-events:none;transition:opacity .3s}
.lb.on{opacity:1;pointer-events:auto}
.lb-top{display:flex;justify-content:space-between;align-items:center;padding:16px 16px 10px 24px}
.lb-n{font:400 20px var(--fd);font-variation-settings:"SOFT" 100,"opsz" 40;font-variant-numeric:tabular-nums}
.lb-n small{font:400 14px var(--fb);color:var(--sub)}
.lb button{width:48px;height:48px;border-radius:50%;border:1px solid var(--hair);background:rgba(255,255,255,.75);color:var(--ink);display:grid;place-items:center}
.lb svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.lb-stage{display:grid;place-items:center;min-height:0;padding:0 16px;overflow:hidden;touch-action:pan-y;cursor:zoom-out}
.lb-stage img{max-width:100%;max-height:100%;object-fit:contain;border-radius:8px;box-shadow:0 30px 60px rgba(60,30,40,.18);transition:transform .45s cubic-bezier(.2,.8,.2,1),opacity .3s;user-select:none;-webkit-user-drag:none}
.lb-nav{display:flex;justify-content:center;align-items:center;gap:20px;padding:14px 0 28px}
.lb-hint{font-size:13px;color:var(--sub);min-width:80px;text-align:center}

@media (prefers-reduced-motion:reduce){
  .intro .h-ph img,.intro .ch,.intro .h-inv,.intro .h-when,.intro .cue{opacity:1;transform:none;filter:none}
  .intro .aline path{stroke-dashoffset:0}
  .sh{transition:none}
  .rv,.w{opacity:1;transform:none;filter:none}
  .cue i{animation:none}
}

/* ---------- LAPTOP ---------- */
@container site (min-width:760px){
  .top{padding:22px 40px}
  .h-in{padding-top:9cqh}
  .h-arch{width:auto;height:60cqh}
  .names{font-size:min(7.5cqw,15cqh)}
  .names .ln{display:inline}
  .h-tx{margin-top:-9cqh}
  .i-br{width:50%;height:86cqh}
  .beat{left:10cqw;right:auto;width:min(560px,42cqw);top:24cqh}
  .rail{left:10cqw}
  .pf .fr{width:min(420px,34cqw)}
  .pf .art{width:20cqw}.pf .art.l{left:28cqw}.pf .art.r{right:28cqw}
  .cl{height:auto;aspect-ratio:16/10;max-width:900px;margin:8cqh auto}
  .cl .a{width:34%;left:10%}.cl .b{width:28%;right:12%;top:34%}
  .cl .art{width:24%;right:2%;top:4%}
  .sch,.rs,.gift{max-width:640px;margin:0 auto}
  .rs{padding-top:14cqh}
  .rs>.art{width:200px;right:-120px;top:2cqh}
  .mq{max-width:1100px;margin:0 auto;height:110cqh;gap:18px}.mtrack{gap:18px}
  .gal-h{max-width:1100px;margin:0 auto}
  .e-arch{width:auto;height:58cqh}
  .st-c{font-size:36px}
  .rs>.bed{height:140px;right:auto;width:calc(100% + 48px)}
}

/* ---------- bổ sung cho bản chạy thật ---------- */
.site:focus{outline:none}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.rs-err{color:#A1332B;font-size:14px;margin:-6px 0 0}
.submit:disabled{opacity:.6;cursor:default}
.submit.busy{pointer-events:none}
img.qr{width:100%;height:auto;aspect-ratio:1;object-fit:contain}
img.qr.empty{background:repeating-linear-gradient(45deg,#fff 0 10px,#F4F1EE 10px 20px);border:1px dashed rgba(35,29,34,.2)}
.acct button[hidden]{display:none}

/* bìa thiệp */
.cover{position:fixed;inset:0;z-index:20;display:grid;place-items:center;padding:24px;background:radial-gradient(120% 80% at 50% 30%,#F6F3EF 0%,#EFEDEA 55%,#E7E2DD 100%);color:#231D22;
  font-family:"Be Vietnam Pro",system-ui,sans-serif;transition:opacity 1.1s ease,transform 1.3s cubic-bezier(.6,0,.2,1),filter 1.1s ease}
.cover.out{opacity:0;transform:scale(1.08);filter:blur(6px);pointer-events:none}
.cv-in{position:relative;width:min(300px,78vw);aspect-ratio:240/330;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding-top:8%}
.cv-arch{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.cv-arch path{fill:none;stroke:#B8924F;stroke-width:1.2;vector-effect:non-scaling-stroke;stroke-dasharray:1;stroke-dashoffset:1;animation:cvDraw 2.4s cubic-bezier(.6,0,.2,1) .2s forwards}
@keyframes cvDraw{to{stroke-dashoffset:0}}
.cover .eb{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:#7D2B45;font-weight:500;margin:0}
.cv-names{margin:0;font:300 clamp(54px,17vw,84px)/.92 "Fraunces",Georgia,serif;font-variation-settings:"SOFT" 100,"opsz" 144;letter-spacing:-.035em;display:flex;flex-direction:column;align-items:center}
.cv-names span{color:#7D2B45;font-weight:200;font-size:.6em;line-height:1.1}
.cv-date{margin:0;font:400 15px "Be Vietnam Pro",sans-serif;letter-spacing:.2em;color:#5E555A}
.cv-btn{margin-top:18px;display:inline-flex;align-items:center;gap:10px;min-height:52px;padding:0 28px 0 24px;border:0;border-radius:999px;background:#7D2B45;color:#fff;font:500 16px "Be Vietnam Pro",sans-serif;cursor:pointer;
  box-shadow:0 14px 30px rgba(125,43,69,.25);animation:cvPulse 2.6s ease-in-out 2.4s infinite}
.cv-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
@keyframes cvPulse{0%,100%{transform:none}50%{transform:scale(1.04)}}
.cv-note{margin:2px 0 0;font-size:12.5px;color:#5E555A}
.cv-in>*:not(.cv-arch){opacity:0;transform:translateY(12px);animation:cvIn 1s cubic-bezier(.2,.8,.2,1) forwards}
.cv-in>.eb{animation-delay:.5s}.cv-names{animation-delay:.75s}.cv-date{animation-delay:1s}.cv-btn{animation:cvIn 1s cubic-bezier(.2,.8,.2,1) 1.25s forwards,cvPulse 2.6s ease-in-out 2.6s infinite}.cv-note{animation-delay:1.45s}
@keyframes cvIn{to{opacity:1;transform:none}}

/* nút nhạc */
.mus{position:fixed;right:max(14px,env(safe-area-inset-right));bottom:max(16px,env(safe-area-inset-bottom));z-index:10;width:46px;height:46px;display:grid;place-items:center;border-radius:50%;
  border:1px solid rgba(35,29,34,.13);background:rgba(255,255,255,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);cursor:pointer;box-shadow:0 8px 24px rgba(60,30,40,.12)}
.mus[hidden]{display:none}
.eq{display:flex;align-items:flex-end;gap:2.5px;height:16px;width:18px}
.eq i{flex:1;background:#7D2B45;border-radius:2px;height:30%}
.mus.on .eq i{animation:eq 1s ease-in-out infinite alternate}
.mus.on .eq i:nth-child(2){animation-duration:.7s}.mus.on .eq i:nth-child(3){animation-duration:1.3s}.mus.on .eq i:nth-child(4){animation-duration:.85s}
@keyframes eq{from{height:20%}to{height:100%}}
@media (prefers-reduced-motion:reduce){
  .cover,.cv-in>*,.cv-btn{animation:none!important;opacity:1!important;transform:none!important}
  .cv-arch path{animation:none;stroke-dashoffset:0}
  .mus.on .eq i{animation:none;height:70%}
}