/* Đất Việt — dark cinematic site (after the Squarespace "Singularity" reference).
   Shared by index.html and bai.html. Display type: Anton; body: Be Vietnam Pro. One accent: white. Red only for tiny brand marks. */
:root{
  --bg:#07080c;--bg-2:#0d0f15;--bg-3:#151822;--line:rgba(255,255,255,.1);--line-2:rgba(255,255,255,.18);
  --fg:#f3f2ee;--mute:rgba(243,242,238,.62);--dim:rgba(243,242,238,.4);--red:#e0262f;--tint:#1b2440;
  --ease:cubic-bezier(.2,.8,.2,1);--display:"Anton","Be Vietnam Pro",Impact,sans-serif;
  --gut:clamp(16px,4vw,48px);--max:1320px;color-scheme:dark}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font:400 16px/1.6 "Be Vietnam Pro",system-ui,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,video,canvas{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
:focus-visible{outline:2px solid #fff;outline-offset:3px;border-radius:6px}
::selection{background:#fff;color:#000}
.wrap{width:min(var(--max),100% - var(--gut)*2);margin-inline:auto}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.i{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- type ---------- */
/* 1.2: Vietnamese stacks marks above (Ả, Ấ) and below (Ợ, Ệ); tighter lines make them touch the next line */
.disp{font-family:var(--display);font-weight:400;text-transform:uppercase;line-height:1.2;letter-spacing:.005em;margin:0;text-wrap:balance}
.h-xl{font-size:clamp(46px,8.4vw,128px)}
.h-l{font-size:clamp(38px,5.6vw,84px)}
.h-m{font-size:clamp(28px,3.2vw,44px)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--mute)}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--red)}
.lead{font-size:clamp(15px,1.25vw,17.5px);color:var(--mute);max-width:52ch;margin:18px 0 0}

/* glitch: two offset copies sliced by clip-path, played on reveal and on hover */
.gl{position:relative;display:block}
.gl::before,.gl::after{content:attr(data-text);position:absolute;inset:0;pointer-events:none;opacity:0}
.gl::before{color:#9fb4ff;transform:translateX(-3px)}
.gl::after{color:#ff8a8a;transform:translateX(3px)}
.gl.play::before{animation:gl-a .9s steps(1) both}
.gl.play::after{animation:gl-b .9s steps(1) both}
.gl.play{animation:gl-main .9s steps(1) both}
@keyframes gl-a{0%{opacity:.85;clip-path:inset(12% 0 70% 0);transform:translate(-8px,0)}15%{clip-path:inset(60% 0 22% 0);transform:translate(6px,0)}30%{clip-path:inset(35% 0 48% 0);transform:translate(-4px,0)}45%{clip-path:inset(80% 0 6% 0);transform:translate(10px,0)}60%{clip-path:inset(5% 0 85% 0);transform:translate(-3px,0)}75%{opacity:.6;clip-path:inset(48% 0 40% 0);transform:translate(2px,0)}100%{opacity:0}}
@keyframes gl-b{0%{opacity:.8;clip-path:inset(70% 0 10% 0);transform:translate(8px,0)}20%{clip-path:inset(20% 0 66% 0);transform:translate(-6px,0)}40%{clip-path:inset(52% 0 30% 0);transform:translate(5px,0)}60%{clip-path:inset(8% 0 78% 0);transform:translate(-9px,0)}80%{opacity:.5;clip-path:inset(88% 0 2% 0);transform:translate(3px,0)}100%{opacity:0}}
@keyframes gl-main{0%{clip-path:inset(0 0 0 0);transform:skewX(-8deg)}10%{transform:skewX(4deg) translateX(-2px)}20%{transform:none;clip-path:inset(0 0 40% 0)}25%{clip-path:inset(0)}50%{transform:translateX(2px)}55%{transform:none}100%{transform:none}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:50px;padding:0 26px;border-radius:999px;font-size:13.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;white-space:nowrap;transition:transform .25s var(--ease),background .25s,color .25s,box-shadow .25s}
.btn-w{background:#fff;color:#0a0a0a;box-shadow:0 10px 40px -10px rgba(255,255,255,.35)}
.btn-w:hover{background:#e9e9e4}
.btn-g{border:1px solid var(--line-2);background:rgba(255,255,255,.06);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.btn-g:hover{background:rgba(255,255,255,.14)}
.btn-sm{height:40px;padding:0 18px;font-size:12px}
.btn .play-ico{width:22px;height:22px;border-radius:50%;background:#0a0a0a;color:#fff;display:grid;place-items:center}
.btn .play-ico svg{width:9px;height:9px;fill:currentColor;stroke:none;margin-left:1px}
.btn:active{transform:scale(.97)}

/* ---------- top bar ---------- */
.top{position:fixed;inset:0 0 auto 0;z-index:60;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px var(--gut);transition:background .4s,padding .4s,transform .4s var(--ease)}
.top.solid{background:rgba(7,8,12,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);padding-block:12px;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-size:19px;letter-spacing:.06em}
.brand img{width:40px;height:auto}
.nav{display:flex;gap:26px;font-size:12px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--mute)}
.nav a{position:relative;padding:6px 0;transition:color .2s}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:#fff;transform:scaleX(0);transform-origin:right;transition:transform .35s var(--ease)}
.nav a:hover{color:#fff}
.nav a:hover::after{transform:scaleX(1);transform-origin:left}
.top .btn{height:42px;padding:0 20px;font-size:12px}
@media (max-width:900px){.nav{display:none}}

/* phone menu */
.burger{display:none;position:relative;width:44px;height:44px;border-radius:50%;border:1px solid var(--line-2);background:rgba(7,8,12,.5);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);flex:none}
.burger i{position:absolute;left:13px;right:13px;height:1.5px;background:#fff;border-radius:2px;transition:transform .45s var(--ease),top .45s var(--ease)}
.burger i:first-child{top:17px}.burger i:last-child{top:25px}
.burger.x i:first-child{top:21px;transform:rotate(45deg)}.burger.x i:last-child{top:21px;transform:rotate(-45deg)}
@media (max-width:900px){
  .burger{display:block}
  .top{gap:10px}
  .top .btn{margin-left:auto;height:40px;padding:0 16px;font-size:11px}
  .top .brand{font-size:16px}.top .brand img{width:34px}
}
.top.menu-open{background:transparent;border-color:transparent;backdrop-filter:none;-webkit-backdrop-filter:none;z-index:110}
.mnav{position:fixed;inset:0;z-index:105;background:var(--bg);display:flex;flex-direction:column;justify-content:space-between;
  padding:calc(96px + env(safe-area-inset-top, 0px)) var(--gut) calc(28px + env(safe-area-inset-bottom, 0px));
  opacity:0;visibility:hidden;transition:opacity .35s var(--ease),visibility .35s}
.mnav.open{opacity:1;visibility:visible}
.mnav nav{display:grid;gap:2px}
.mnav nav a{display:flex;align-items:baseline;gap:14px;padding:10px 0;border-bottom:1px solid var(--line);font-family:var(--display);font-size:clamp(34px,10vw,52px);line-height:1.15;text-transform:uppercase;
  opacity:0;transform:translateY(18px);transition:opacity .45s var(--ease),transform .6s var(--ease);transition-delay:calc(var(--i) * 50ms)}
.mnav nav a small{font-family:"Be Vietnam Pro",sans-serif;font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--dim)}
.mnav.open nav a{opacity:1;transform:none}
.mnav-f{display:grid;gap:8px;font-size:15px;margin-top:24px}
.mnav-f a{font-weight:600}
.mnav-f p{margin:0;color:var(--mute);font-size:13.5px}
@media (min-width:901px){.mnav{display:none}}

/* thin scroll indicator on the right edge */
.rail{position:fixed;right:10px;top:50%;z-index:55;width:2px;height:120px;margin-top:-60px;border-radius:2px;background:rgba(255,255,255,.14);overflow:hidden}
.rail i{position:absolute;left:0;right:0;top:0;height:28px;border-radius:2px;background:#fff;transform:translateY(calc(var(--p,0) * 92px))}

/* ---------- sections ---------- */
section{position:relative}
.sec{padding:clamp(90px,12vw,170px) 0}
.sec-h{display:flex;align-items:flex-end;justify-content:space-between;gap:24px 40px;flex-wrap:wrap;margin-bottom:clamp(36px,5vw,64px)}
.sec-h .disp{margin-top:16px}
.rv{opacity:0;transform:translateY(34px);transition:opacity .9s var(--ease),transform 1.1s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.08s}.rv.d2{transition-delay:.16s}.rv.d3{transition-delay:.24s}

/* chips */
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chips button,.chips a{display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;border:1px solid var(--line-2);font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--mute);transition:all .25s}
.chips button:hover,.chips a:hover{color:#fff;border-color:rgba(255,255,255,.4)}
.chips button[aria-pressed="true"],.chips a[aria-current]{background:#fff;color:#000;border-color:#fff}

/* media cards */
.card{position:relative;display:block;text-align:left;border-radius:18px;overflow:hidden;background:var(--bg-3);isolation:isolate}
.card .im{position:relative;aspect-ratio:4/3;overflow:hidden}
.card .im img,.card .im video{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease),filter .6s}
.card:hover .im img{transform:scale(1.06)}
.card .tag{position:absolute;left:14px;top:14px;z-index:2;font-size:10.5px;font-weight:700;letter-spacing:.14em;padding:5px 10px;border-radius:999px;background:rgba(0,0,0,.55);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.16)}
.card .cap{padding:16px 18px 20px}
.card .cap b{display:block;font-family:var(--display);font-weight:400;font-size:22px;line-height:1.22;text-transform:uppercase;letter-spacing:.01em}
.card .cap span{display:block;margin-top:6px;font-size:13.5px;color:var(--mute)}

/* ---------- floating consultant badge + overlay ---------- */
.badge{position:fixed;right:22px;bottom:22px;z-index:70;width:112px;height:112px;border-radius:50%;display:grid;place-items:center;transition:transform .5s var(--ease),opacity .4s}
.badge svg.ring{position:absolute;inset:0;width:100%;height:100%;animation:spin 16s linear infinite;fill:#fff;font:700 9.6px "Be Vietnam Pro",sans-serif;letter-spacing:.2em}
.badge .face{width:70px;height:70px;border-radius:50%;overflow:hidden;border:2px solid #fff;box-shadow:0 12px 40px rgba(0,0,0,.6);transition:transform .4s var(--ease)}
.badge .face img{width:100%;height:100%;object-fit:cover}
.badge:hover .face{transform:scale(1.08)}
.badge .dot{position:absolute;right:20px;top:20px;width:12px;height:12px;border-radius:50%;background:#2ee26b;border:2px solid var(--bg);animation:pulse 2s infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(46,226,107,.6)}70%{box-shadow:0 0 0 10px rgba(46,226,107,0)}}
body.sh-top .badge{transform:translateY(16px) scale(.9);opacity:.0;pointer-events:none}

.chat{position:fixed;inset:0;z-index:120;background:radial-gradient(900px 700px at 50% 60%,#141a2e 0%,#05060a 70%);display:grid;grid-template-columns:1.2fr 1fr;align-items:center;opacity:0;visibility:hidden;transition:opacity .5s var(--ease),visibility .5s}
.chat.open{opacity:1;visibility:visible}
.chat .x{position:absolute;right:22px;top:20px;width:48px;height:48px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line-2);z-index:3}
.chat .x:hover{background:#fff;color:#000}
.chat .who{position:relative;height:100%;display:flex;align-items:flex-end;justify-content:center;perspective:1000px}
.chat .who img{height:min(92vh,980px);width:auto;max-width:108%;object-fit:contain;object-position:bottom;transform:rotateY(var(--ry,0deg)) rotateX(var(--rx,0deg)) translateY(40px);transform-origin:50% 80%;transition:transform .25s ease-out;filter:drop-shadow(0 30px 80px rgba(0,0,0,.6));opacity:0}
.chat.open .who img{opacity:1;animation:rise 1s var(--ease) both}
@keyframes rise{from{opacity:0;transform:translateY(120px)}}
.chat .who::after{content:"";position:absolute;left:0;right:0;bottom:0;height:30%;background:linear-gradient(rgba(5,6,10,0),#05060a);pointer-events:none}
.chat .talk{padding:0 var(--gut) 0 0;max-width:560px}
.chat .bubble{font-size:clamp(17px,1.5vw,20px);line-height:1.5;color:var(--fg);margin:18px 0 26px;min-height:3em}
.chat .bubble .cur{display:inline-block;width:2px;height:1.1em;background:#fff;vertical-align:-3px;margin-left:2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.chat .opts{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.chat .opts button,.chat .opts a{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:3px;padding:16px 18px;border-radius:16px;border:1px solid var(--line-2);background:rgba(255,255,255,.04);font-weight:600;font-size:14.5px;text-align:left;transition:all .25s var(--ease);opacity:0;transform:translateY(12px)}
.chat.ready .opts>*{opacity:1;transform:none}
.chat .opts>*:hover{background:#fff;color:#000;border-color:#fff}
.chat .opts small{display:block;font-weight:400;font-size:12.5px;color:var(--mute)}
.chat .opts>*:hover small{color:#555}
.chat .sparks{position:absolute;inset:0;pointer-events:none;z-index:2}
@media (max-width:820px){
  .badge{right:14px;bottom:calc(84px + env(safe-area-inset-bottom));width:92px;height:92px}
  .badge .face{width:58px;height:58px}
  .badge .dot{right:15px;top:15px}
  .chat{grid-template-columns:1fr;align-content:end;overflow-y:auto}
  .chat .who{position:absolute;inset:0;align-items:flex-start;opacity:.9}
  .chat .who img{width:min(100%,520px);max-height:56vh}
  .chat .who::after{height:70%}
  .chat .talk{position:relative;z-index:2;padding:0 16px calc(20px + env(safe-area-inset-bottom))}
  .chat .bubble{font-size:15px;margin:12px 0 16px}
  .chat .opts{grid-template-columns:1fr 1fr;gap:8px}
  .chat .opts button,.chat .opts a{padding:12px 14px;font-size:13.5px;border-radius:14px}
}

/* ---------- lightbox / video modal ---------- */
.lb{position:fixed;inset:0;z-index:130;background:rgba(3,4,7,.96);display:grid;place-items:center;opacity:0;visibility:hidden;transition:opacity .35s,visibility .35s}
.lb.open{opacity:1;visibility:visible}
.lb .stage{width:min(1200px,100% - 32px);height:min(78vh,820px);display:grid;place-items:center}
.lb .stage img,.lb .stage video{max-width:100%;max-height:100%;border-radius:12px;object-fit:contain}
.lb .ctl{position:absolute;width:52px;height:52px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line-2);background:rgba(255,255,255,.04)}
.lb .ctl:hover{background:#fff;color:#000}
.lb .x{right:20px;top:18px}.lb .prev{left:20px;top:50%;margin-top:-26px}.lb .next{right:20px;top:50%;margin-top:-26px}
.lb .cap{position:absolute;left:0;right:0;bottom:24px;text-align:center;font-size:13.5px;color:var(--mute)}
@media (max-width:820px){.lb .prev,.lb .next{top:auto;bottom:70px;margin:0}}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--line);padding:56px 0 30px;font-size:13.5px;color:var(--mute)}
.foot .grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:32px}
.foot h4{margin:0 0 14px;font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--dim);font-weight:600}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.foot a:hover{color:#fff}
.foot .big{font-family:var(--display);font-size:clamp(64px,15vw,230px);line-height:1.5;padding:.06em 0;color:transparent;background:linear-gradient(180deg,rgba(255,255,255,.13),rgba(255,255,255,.03) 85%);-webkit-background-clip:text;background-clip:text;margin:30px 0 10px;white-space:nowrap;overflow-x:clip;overflow-y:visible;text-transform:uppercase}
.foot .bot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim)}
@media (max-width:820px){.foot .grid{grid-template-columns:1fr 1fr}.foot .grid>div:first-child{grid-column:1/-1}}

/* phone call bar */
.mbar{display:none}
@media (max-width:820px){
  .mbar{position:fixed;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));z-index:65;display:grid;grid-template-columns:1fr 1fr;gap:8px;transition:transform .5s var(--ease)}
  .mbar .btn{height:52px}
  body.sh-top .mbar{transform:translateY(140%)}
  .rail{display:none}
}

/* custom cursor (mouse only). The ring is positioned by JS; its size/shape morph by state:
   free = small ring stretched by speed · stick = wraps the hovered button · invert = big disc that inverts headings
   label = white disc with a word over cards/videos · text = caret over form fields */
html.cx-on,html.cx-on *{cursor:none!important}
.cx-dot,.cx-ring{position:fixed;left:0;top:0;z-index:300;pointer-events:none;opacity:0;will-change:transform}
.cx-dot{width:6px;height:6px;margin:-3px 0 0 -3px;border-radius:50%;background:#fff;mix-blend-mode:difference;transition:opacity .25s,width .25s,height .25s,margin .25s}
.cx-ring{width:36px;height:36px;border-radius:999px;border:1.5px solid rgba(255,255,255,.75);mix-blend-mode:difference;display:grid;place-items:center;
  transition:width .45s var(--ease),height .45s var(--ease),border-radius .45s var(--ease),background-color .3s,border-color .3s,opacity .3s}
.cx-ring span{font-size:11.5px;font-weight:700;color:#000;letter-spacing:.12em;text-transform:uppercase;opacity:0;transform:scale(.6);transition:opacity .25s,transform .4s var(--ease);white-space:nowrap}
html.cx-in .cx-dot,html.cx-in .cx-ring{opacity:1}
.cx-ring.stick{border-color:#fff;background:rgba(255,255,255,.1)}
.cx-ring.invert{width:150px;height:150px;border-color:transparent;background:#fff}
.cx-ring.label{width:92px;height:92px;border-color:transparent;background:#fff;mix-blend-mode:normal;box-shadow:0 10px 40px rgba(0,0,0,.35)}
.cx-ring.label span{opacity:1;transform:none}
.cx-ring.text{width:2px;height:26px;border-radius:2px;border-color:transparent;background:#fff}
html.cx-on .cx-ring:is(.stick,.invert,.label,.text) + .cx-dot{opacity:0}
.cx-ripple{position:fixed;left:0;top:0;z-index:299;width:40px;height:40px;margin:-20px 0 0 -20px;border-radius:50%;border:1.5px solid #fff;pointer-events:none;mix-blend-mode:difference;animation:cx-rip .6s var(--ease) forwards}
@keyframes cx-rip{from{transform:var(--at) scale(.4);opacity:.9}to{transform:var(--at) scale(2.6);opacity:0}}
/* elements the cursor pulls (JS sets --mx/--my) and cards that lean toward it (--tx/--ty) */
.mag{transition:transform .5s var(--ease)}
.mag.pull{transform:translate(var(--mx,0),var(--my,0));transition:transform .15s linear}
.tilt{transform:perspective(900px) rotateX(var(--tx,0deg)) rotateY(var(--ty,0deg));transition:transform .5s var(--ease)}
.tilt.on{transition:transform .12s linear}
.tilt img{transition:transform 1.2s var(--ease)}
.tilt.on.on.on img{transform:/* repeated class outranks the cards' own :hover zoom */scale(1.08) translate(var(--px,0),var(--py,0));transition:transform .3s ease-out}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .rv{opacity:1;transform:none;transition:none}
  .gl.play,.gl.play::before,.gl.play::after,.badge svg.ring{animation:none}
}