/* Genuine DOM 3D: three independently layered product screens in perspective.
   Depth is produced by transform-style:preserve-3d, translateZ and scene rotation. */
.depth-experience{position:relative;isolation:isolate;display:grid;grid-template-columns:minmax(0,.83fr) minmax(0,1.17fr);gap:0;margin:-8px 0 67px;border:1px solid rgba(33,59,53,.26);border-radius:24px;min-height:645px;background:#18303c;color:#f0f8eb;overflow:hidden;box-shadow:0 25px 68px #274d4e33,0 6px 15px #11272923}
.depth-experience::before{content:"";position:absolute;z-index:-1;inset:0;background:radial-gradient(circle at 87% 30%,#619a754b,transparent 48%),linear-gradient(135deg,#142934,#1c3740 69%,#22454c)}
.depth-experience::after{content:"";z-index:0;position:absolute;inset:0;pointer-events:none;opacity:.06;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.7' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.25'/%3E%3C/svg%3E")}
.depth-copy{position:relative;z-index:3;display:flex;justify-content:center;flex-direction:column;padding:60px clamp(30px,4.1vw,65px);min-width:0}
.depth-eyebrow{display:flex;align-items:center;gap:13px;font:700 11px "Courier New",monospace;letter-spacing:.05em;color:#b9d5cd}
.depth-live-dot{width:8px;height:8px;border-radius:50%;background:#98f389;box-shadow:0 0 18px #98f389aa}
.depth-copy h3{font-size:clamp(51px,5.1vw,80px);line-height:1.02;letter-spacing:-.075em;margin:40px 0 25px;font-weight:770}
.depth-copy h3 em{font:italic 400 1em Georgia,serif;letter-spacing:-.065em;color:#c5f2b5}
.depth-copy>p:not(.depth-caption){font-size:15px;line-height:1.75;color:#bdd3c7;max-width:465px;margin:0 0 33px}
.depth-selector{display:flex;gap:9px;flex-wrap:wrap}
.depth-select{display:flex;gap:12px;align-items:center;justify-content:center;background:transparent;border:1px solid #b9ddd355;color:#dff0e7;border-radius:30px;min-height:49px;padding:10px 17px;font-size:13px;font-weight:710;transition:background .22s,border-color .22s,transform .22s}
.depth-select span{font:700 10px "Courier New",monospace;color:#adc7b8}
.depth-select.is-on{background:#bcf0af;border-color:#bcf0af;color:#1d343b;box-shadow:0 6px 22px #0002}
.depth-select.is-on span{color:#466e57}.depth-select:hover{transform:translateY(-2px);border-color:#bcf0af}
.depth-caption{margin:36px 0 0;color:#b1caba;font:700 10px "Courier New",monospace;line-height:1.65;letter-spacing:.015em}
.depth-caption>span{color:#baf0ae;font-size:20px;margin-right:8px}
.depth-view{position:relative;min-height:645px;overflow:hidden;isolation:isolate}
.depth-view::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 55% 45%,#96dead40,transparent 52%),linear-gradient(115deg,transparent,#4f948a1a);opacity:.9}
.depth-view::after{content:"";position:absolute;inset:0;pointer-events:none;z-index:4;background:linear-gradient(90deg,#172f3c8e,transparent 20%,transparent 83%,#19343f8c);mix-blend-mode:normal}
.depth-light{position:absolute;z-index:1;left:8%;top:4%;width:87%;height:90%;background:radial-gradient(ellipse at 54% 46%,#b4fbb347,transparent 63%);filter:blur(36px)}
.depth-floor{position:absolute;z-index:1;width:65%;height:24%;left:18%;bottom:9%;border-radius:50%;background:#08171d8c;filter:blur(36px);transform:rotateX(62deg);box-shadow:0 0 72px #0006}
.depth-world{position:absolute;z-index:2;inset:1% 0 3%;perspective:1000px;perspective-origin:50% 47%;touch-action:pan-y;outline-offset:-12px}
.depth-axis{position:absolute;inset:0;transform-style:preserve-3d;transform:rotateX(var(--depth-rx,9deg)) rotateY(var(--depth-ry,-18deg));will-change:transform;transition:transform .42s cubic-bezier(.2,.8,.2,1)}
.depth-slab{position:absolute;top:50%;left:50%;width:278px;height:404px;display:flex;flex-direction:column;justify-content:space-between;padding:17px 19px;border-radius:14px;backface-visibility:hidden;transform-style:preserve-3d;transition:transform .75s cubic-bezier(.16,.8,.2,1),filter .75s,box-shadow .65s;border:1px solid #d8f3e965;box-shadow:0 34px 45px #0008,4px 8px 0 #03070c4a,inset 1px 1px 1px #ffffff8a;overflow:hidden}
.depth-slab::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;background:linear-gradient(135deg,#ffffff6b 0%,transparent 30%,transparent 77%,#0000001b 100%);mix-blend-mode:soft-light}
.depth-slab::after{content:"";position:absolute;pointer-events:none;left:15px;right:15px;top:9px;height:2px;opacity:.65;background:linear-gradient(90deg,transparent,#fff,transparent)}
.depth-slab>*{position:relative;z-index:1}
.depth-slab-form{background:linear-gradient(155deg,#b9e0bb,#8dac8c);color:#274343;transform:translate3d(calc(-50% - 140px),calc(-50% + 19px),-115px) rotateY(-20deg) rotateZ(-9deg)}
.depth-slab-learn{background:linear-gradient(152deg,#d2e59e,#c6d573);color:#404329;transform:translate3d(calc(-50% + 0px),calc(-50% - 23px),6px) rotateY(-3deg) rotateZ(2deg)}
.depth-slab-practice{background:linear-gradient(155deg,#c1acf0,#a284dd);color:#32245a;transform:translate3d(calc(-50% + 142px),calc(-50% + 20px),127px) rotateY(12deg) rotateZ(9deg)}
.depth-world[data-active="0"] .depth-slab-form{transform:translate3d(calc(-50% - 125px),calc(-50% - 25px),190px) rotateY(-12deg) rotateZ(-4deg);filter:brightness(1.05)}
.depth-world[data-active="0"] .depth-slab-learn{transform:translate3d(calc(-50% + 0px),calc(-50% + 15px),-34px) rotateY(-3deg) rotateZ(2deg);filter:brightness(.83)}
.depth-world[data-active="0"] .depth-slab-practice{transform:translate3d(calc(-50% + 135px),calc(-50% + 39px),-110px) rotateY(11deg) rotateZ(7deg);filter:brightness(.77)}
.depth-world[data-active="1"] .depth-slab-form{transform:translate3d(calc(-50% - 146px),calc(-50% + 33px),-105px) rotateY(-20deg) rotateZ(-8deg);filter:brightness(.84)}
.depth-world[data-active="1"] .depth-slab-learn{transform:translate3d(calc(-50% + 0px),calc(-50% - 25px),190px) rotateY(0deg) rotateZ(0deg);filter:brightness(1.05)}
.depth-world[data-active="1"] .depth-slab-practice{transform:translate3d(calc(-50% + 155px),calc(-50% + 35px),-80px) rotateY(13deg) rotateZ(8deg);filter:brightness(.8)}
.depth-world[data-active="2"] .depth-slab-form{transform:translate3d(calc(-50% - 140px),calc(-50% + 28px),-160px) rotateY(-20deg) rotateZ(-7deg);filter:brightness(.76)}
.depth-world[data-active="2"] .depth-slab-learn{transform:translate3d(calc(-50% + 4px),calc(-50% + 12px),-35px) rotateY(-5deg) rotateZ(-2deg);filter:brightness(.84)}
.depth-world[data-active="2"] .depth-slab-practice{transform:translate3d(calc(-50% + 124px),calc(-50% - 25px),190px) rotateY(12deg) rotateZ(3deg);filter:brightness(1.08)}
.depth-slab-head,.depth-slab-foot{display:flex;justify-content:space-between;align-items:center;gap:8px;font:700 10px "Courier New",monospace;letter-spacing:.03em}
.depth-slab-head b{font-size:23px;font-weight:400}
.depth-slab-body{display:flex;flex-direction:column;gap:10px}
.depth-slab-body>small{font:700 10px "Courier New",monospace;letter-spacing:.04em}
.depth-slab-body>strong{font-size:33px;line-height:1.05;letter-spacing:-.063em;margin-bottom:15px}
.depth-form-line,.depth-lesson{background:#ffffff94;padding:12px 13px;border-radius:8px;display:flex;gap:8px;flex-direction:column}
.depth-form-line span{font:700 8px "Courier New",monospace;color:#58705a}
.depth-form-line b,.depth-lesson b{font-size:12px;font-weight:700}
.depth-lesson{flex-direction:row;align-items:center;gap:8px}
.depth-lesson span,.depth-lesson i{font:700 11px "Courier New",monospace}.depth-lesson i{font-style:normal;margin-left:auto}
.depth-message{background:#ffffffaa;border-radius:12px 12px 12px 2px;padding:14px;font-size:11px;font-weight:700}
.depth-message.response{margin-left:20px;background:#c7f0ba;border-radius:12px 12px 2px 12px}
.depth-mark{position:absolute;z-index:5;bottom:26px;right:32px;left:40px;display:flex;justify-content:space-between;gap:16px;font:700 9px "Courier New",monospace;letter-spacing:.08em;color:#bcd6d6}
.depth-mark span{color:#c8f2be}
@media(max-width:1190px){
 .depth-experience{grid-template-columns:.91fr 1.09fr}
 .depth-copy{padding:45px 28px}.depth-copy h3{font-size:clamp(46px,5vw,69px)}
 .depth-slab{width:246px;height:370px}.depth-slab-body>strong{font-size:29px}
}
@media(max-width:900px){
 .depth-experience{display:flex;flex-direction:column;margin-bottom:55px}
 .depth-copy{padding:52px 33px 15px}.depth-copy h3{font-size:clamp(49px,7vw,78px);margin:25px 0 17px}
 .depth-copy>p:not(.depth-caption){max-width:650px;margin-bottom:22px}
 .depth-view{min-height:560px}
 .depth-slab{width:260px;height:375px}
 .depth-selector{gap:10px}
 .depth-caption{margin-top:17px}
}
@media(max-width:520px){
 .depth-experience{border-radius:18px;margin-bottom:48px;min-height:0}
 .depth-copy{padding:34px 20px 9px}.depth-eyebrow{font-size:10px}
 .depth-copy h3{font-size:clamp(38px,9.3vw,58px);margin:25px 0 16px}
 .depth-copy>p:not(.depth-caption){font-size:14px;line-height:1.65}
 .depth-selector{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px}
 .depth-select{gap:5px;min-height:48px;padding:9px 6px;font-size:11px;border-radius:12px}
 .depth-select span{font-size:9px}
 .depth-caption{font-size:9px;margin-top:12px}
 .depth-view{min-height:466px}
 .depth-world{inset:0;perspective:780px}
 .depth-slab{width:192px;height:305px;padding:12px}
 .depth-slab-body>strong{font-size:25px;margin-bottom:7px}.depth-slab-body>small{font-size:8px}
 .depth-slab-head,.depth-slab-foot{font-size:8px}
 .depth-slab-head b{font-size:15px}
 .depth-form-line,.depth-lesson{padding:9px}.depth-form-line b,.depth-lesson b{font-size:9px}
 .depth-form-line span{font-size:7px}
 .depth-message{font-size:9px;padding:9px}
 .depth-slab-form{transform:translate3d(calc(-50% - 66px),calc(-50% + 15px),-135px) rotateY(-20deg) rotateZ(-8deg)}
 .depth-slab-learn{transform:translate3d(calc(-50% + 0px),calc(-50% - 16px),4px) rotateY(-3deg) rotateZ(2deg)}
 .depth-slab-practice{transform:translate3d(calc(-50% + 66px),calc(-50% + 15px),105px) rotateY(12deg) rotateZ(8deg)}
 .depth-world[data-active="0"] .depth-slab-form{transform:translate3d(calc(-50% - 59px),calc(-50% - 20px),132px) rotateY(-10deg) rotateZ(-4deg)}
 .depth-world[data-active="0"] .depth-slab-learn{transform:translate3d(calc(-50% + 0px),calc(-50% + 15px),-55px) rotateZ(2deg)}
 .depth-world[data-active="0"] .depth-slab-practice{transform:translate3d(calc(-50% + 65px),calc(-50% + 20px),-115px) rotateZ(6deg)}
 .depth-world[data-active="1"] .depth-slab-form{transform:translate3d(calc(-50% - 65px),calc(-50% + 18px),-120px) rotateY(-14deg) rotateZ(-6deg)}
 .depth-world[data-active="1"] .depth-slab-learn{transform:translate3d(-50%,calc(-50% - 15px),132px)}
 .depth-world[data-active="1"] .depth-slab-practice{transform:translate3d(calc(-50% + 65px),calc(-50% + 18px),-100px) rotateZ(6deg)}
 .depth-world[data-active="2"] .depth-slab-form{transform:translate3d(calc(-50% - 66px),calc(-50% + 25px),-150px) rotateZ(-6deg)}
 .depth-world[data-active="2"] .depth-slab-learn{transform:translate3d(calc(-50% + 0px),calc(-50% + 10px),-55px) rotateZ(-2deg)}
 .depth-world[data-active="2"] .depth-slab-practice{transform:translate3d(calc(-50% + 59px),calc(-50% - 20px),132px) rotateY(10deg) rotateZ(3deg)}
 .depth-mark{left:14px;right:14px;bottom:18px;font-size:8px}
}
@media(max-width:360px){.depth-select{font-size:10px}.depth-view{min-height:425px}.depth-slab{width:175px;height:280px}}
@media(prefers-reduced-motion:reduce){
 .depth-axis,.depth-slab,.depth-select{transition:none!important}
 .depth-world{touch-action:pan-y}
}
@media(max-width:360px){
.depth-world[data-active="0"] .depth-slab-form{transform:translate3d(calc(-50% - 29px),calc(-50% - 20px),115px) rotateY(-8deg) rotateZ(-3deg)}
.depth-world[data-active="2"] .depth-slab-practice{transform:translate3d(calc(-50% + 29px),calc(-50% - 20px),115px) rotateY(8deg) rotateZ(3deg)}
}
/* 320px: active screen is centered to keep *all* screen copy legible. */
@media(max-width:360px){
  .depth-world[data-active="0"] .depth-slab-form{transform:translate3d(calc(-50% + 13px),calc(-50% - 20px),115px) rotateY(-6deg) rotateZ(-3deg)}
  .depth-world[data-active="2"] .depth-slab-practice{transform:translate3d(calc(-50% - 13px),calc(-50% - 20px),115px) rotateY(6deg) rotateZ(3deg)}
}
/* Text-first positioning: highlighted 3D panes should remain fully legible. */
@media(max-width:520px){
 .depth-world[data-active="0"] .depth-slab-form{transform:translate3d(calc(-50% + 18px),calc(-50% - 20px),115px) rotateY(-6deg) rotateZ(-3deg)}
 .depth-slab-body>strong{font-size:25px}
 .depth-form-line b,.depth-lesson b{font-size:10px}
}
@media(max-width:360px){
 .depth-world[data-active="0"] .depth-slab-form{transform:translate3d(calc(-50% + 17px),calc(-50% - 20px),100px) rotateY(-5deg) rotateZ(-3deg)}
 .depth-world[data-active="2"] .depth-slab-practice{transform:translate3d(calc(-50% + 43px),calc(-50% - 20px),100px) rotateY(5deg) rotateZ(3deg)}
}