/* ============================================================================
   SPEEDRUN v4 sections (2026-10-28) — thesis.co's home page, block by block, on white, with our content.
   Read from its live page (34 frames down 15,060 px, plus its DOM):
     paragraph in focus (reused: speedrun.js's .sr-blur) · colour cards, staggered (What You Get + Add-ons)
     the staircase with words on the risers and light at the seams (How It Works)
     the centred statement with an inline dot, then a hairline table (Price)
     the numbers table (Work) · the cube field with words on the faces (Book a Spot) · the footer ring (Close)
   The light everywhere is the hero's: a blurred copy of the shape whose faces cycle the palette.
   ========================================================================== */

/* ---- shared ---- */
.v4-sec{max-width:1440px;margin:0 auto;padding:clamp(120px,11vw,190px) var(--margin) 0;}
.v4-head{margin:0 0 clamp(40px,4vw,64px);}
.v4-head p{margin:10px 0 0;font-size:clamp(18px,1.5vw,22px);line-height:1.4;color:rgba(0,0,0,.45);}
.v4-h2{margin:0;font-family:'Tanker','Anton',sans-serif;font-weight:400;text-transform:uppercase;font-size:clamp(40px,4.6vw,76px);line-height:.95;letter-spacing:.005em;text-wrap:balance;max-width:15em;}
.v4-eye{margin:0 0 18px;font-family:'General Sans','Geist',sans-serif;font-weight:500;font-size:15px;letter-spacing:.08em;text-transform:uppercase;color:rgba(0,0,0,.45);}
.v2 .v4-sec .btn--l,.v2 .v4-book .btn--l{--btn-bg:#151515;--btn-fg:#fff;}
.v2 .v4-sec .btn--l:hover,.v2 .v4-book .btn--l:hover{--btn-bg:var(--red);}

/* the faces of any box (step, cube): six faces round a point, sized by --w --h --d */
.bx-f{position:absolute;display:flex;align-items:center;justify-content:center;background:#fff;
  -webkit-backface-visibility:hidden;backface-visibility:hidden;font-family:'Tanker','Anton',sans-serif;font-weight:400;text-transform:uppercase;color:#151515;line-height:.95;white-space:nowrap;}
.bx-front,.bx-back{width:var(--w);height:var(--h);left:calc(var(--w) / -2);top:calc(var(--h) / -2);}
.bx-front{transform:translateZ(calc(var(--d) / 2));}
.bx-back{transform:rotateY(180deg) translateZ(calc(var(--d) / 2));}
.bx-right,.bx-left{width:var(--d);height:var(--h);left:calc(var(--d) / -2);top:calc(var(--h) / -2);}
.bx-right{transform:rotateY(90deg) translateZ(calc(var(--w) / 2));}
.bx-left{transform:rotateY(-90deg) translateZ(calc(var(--w) / 2));}
.bx-top,.bx-bottom{width:var(--w);height:var(--d);left:calc(var(--w) / -2);top:calc(var(--d) / -2);}
.bx-top{transform:rotateX(90deg) translateZ(calc(var(--h) / 2));}
.bx-bottom{transform:rotateX(-90deg) translateZ(calc(var(--h) / 2));}
i.bx-f{background:linear-gradient(var(--la),var(--lc),var(--ld));-webkit-backface-visibility:visible;backface-visibility:visible;
  animation:hx-hue 17.3s linear infinite,hx-band 23s ease-in-out infinite alternate;}

/* ---- the statement on white (speedrun.js's blur-text) ---- */
.v2 .sr-blur{margin-top:0;}
.v2 .sr-blur__text{color:#151515;}
.v2 .bl-base{color:rgba(0,0,0,.12);}

/* ---- colour cards (thesis: Mezo, Fold, Taho…) ---- */
.cds{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));column-gap:clamp(12px,1.4vw,20px);row-gap:clamp(56px,6vw,96px);align-items:start;}
.cd{transform:translate3d(0,var(--py,0px),0);}
.cd:nth-child(3n+2){margin-top:clamp(60px,9vw,150px);}
.cd:nth-child(3n+3){margin-top:clamp(120px,16vw,280px);}
.cd-block{position:relative;aspect-ratio:1 / 1.12;background:var(--c);display:grid;place-items:center;overflow:hidden;}
.cd-block>span{font-family:'Tanker','Anton',sans-serif;text-transform:uppercase;color:var(--ink);font-size:clamp(52px,6.6vw,112px);line-height:.9;letter-spacing:.005em;transform:translateY(.04em);}
.cd-block>em{position:absolute;left:16px;top:16px;font-style:normal;font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink);opacity:.7;}
.cd-t{margin:18px 0 6px;font-size:15px;font-weight:600;letter-spacing:.01em;}
.cd-d{margin:0;max-width:34em;font-size:16px;line-height:1.5;color:rgba(0,0,0,.66);}
.cd-tags{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px;}
.cd-tags li{padding:5px 10px;border-radius:999px;font-size:12.5px;line-height:1;color:color-mix(in srgb,var(--c) 70%,#000);background:color-mix(in srgb,var(--c) 14%,#fff);}
.cd--add .cd-block{aspect-ratio:1 / .78;}

/* ---- the staircase (thesis: the risers carry the words, light leaks at the seams) ---- */
.stz{--run:clamp(120px,13vw,210px);--rise:calc(var(--run) * .5);--dep:calc(var(--run) * 1.5);
  position:relative;height:calc(var(--run) * 3.1);display:grid;place-items:center;margin:0 0 clamp(40px,4vw,72px);}
.stz-light,.stz>.stz-rig{grid-area:1 / 1;}
.stz-light{position:relative;width:100%;height:100%;display:grid;place-items:center;perspective:2400px;filter:blur(calc(var(--run) * .14)) saturate(1.35);opacity:.95;}
.stz{perspective:2400px;}
.stz-rig{position:relative;width:0;height:0;transform-style:preserve-3d;
  transform:translateY(calc(var(--rise) * 1.6)) rotateX(-26deg) rotateY(var(--ry,36deg));}
.stz-step{--w:var(--run);--h:calc(var(--rise) * (var(--k) + 1));--d:var(--dep);position:absolute;left:0;top:0;transform-style:preserve-3d;
  transform:translate3d(calc((var(--k) - 1.5) * var(--run)), calc(var(--h) / -2 + var(--rise-in, 0px)), 0);}
.stz-step .bx-right{background:#f4f4f4;} .stz-step .bx-top{background:#fdfdfd;} .stz-step .bx-front{background:#f7f7f7;}
/* the riser is the top band of each step's left face (the band the step below doesn't cover) */
.stz-step .bx-left{flex-direction:column;justify-content:flex-start;align-items:center;gap:calc(var(--rise) * .06);padding-top:calc(var(--rise) * .2);}
.stz-n{font-family:'General Sans','Geist',sans-serif;font-weight:500;font-size:calc(var(--rise) * .13);letter-spacing:.1em;color:rgba(0,0,0,.45);}
.stz-w{font-size:calc(var(--rise) * .46);line-height:1;}
.v4-phases{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid rgba(0,0,0,.12);}
.v4-phases li{padding:24px clamp(16px,2vw,28px) 0 0;}
.v4-phases li+li{padding-left:clamp(16px,2vw,28px);border-left:1px solid rgba(0,0,0,.12);}
.v4-phases span{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:rgba(0,0,0,.45);}
.v4-phases h3{margin:10px 0 8px;font-family:'Tanker','Anton',sans-serif;font-weight:400;text-transform:uppercase;font-size:clamp(24px,2vw,32px);line-height:1;}
.v4-phases p{margin:0;font-size:15.5px;line-height:1.5;color:rgba(0,0,0,.62);}

/* ---- price: the centred statement (thesis: "We confidently push the ● big red button") ---- */
.v4-price{text-align:center;display:flex;flex-direction:column;align-items:center;}
.v4-price__num{margin:0;font-family:'Tanker','Anton',sans-serif;font-size:clamp(96px,14vw,220px);line-height:.85;letter-spacing:.005em;}
.v4-state{max-width:22em;margin:22px 0 26px;font-size:clamp(22px,2.2vw,34px);line-height:1.28;font-weight:500;color:#151515;text-wrap:balance;}
.v4-state s{color:rgba(0,0,0,.35);}
.v4-dot{display:inline-block;width:.6em;height:.6em;margin:0 .05em;border-radius:50%;vertical-align:.02em;
  background:linear-gradient(var(--la),var(--lc),var(--ld));animation:hx-hue 17.3s linear infinite,hx-band 23s ease-in-out infinite alternate;}
.btn.v4-pill{height:32px;padding:0 14px;border-radius:999px;font-family:'General Sans','Geist',sans-serif;font-weight:500;font-size:14px;}
.v4-table{width:100%;margin-top:clamp(64px,6vw,100px);text-align:left;}
.v4-table__h{margin:0 0 16px;font-size:clamp(22px,1.8vw,28px);font-weight:500;}
.v4-incl ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid rgba(0,0,0,.12);}
.v4-incl li{min-height:120px;padding:22px 20px 22px 0;border-bottom:1px solid rgba(0,0,0,.12);font-size:18px;line-height:1.35;}
.v4-incl li:not(:nth-child(4n+1)){padding-left:20px;border-left:1px solid rgba(0,0,0,.12);}
.v4-incl__note{font-size:14px !important;color:rgba(0,0,0,.5);}

/* ---- work: the numbers table (thesis: "Thesis* by the Numbers") ---- */
.v4-nums{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);border-top:1px solid rgba(0,0,0,.12);}
.v4-case,.v4-num{min-height:clamp(180px,16vw,240px);border-bottom:1px solid rgba(0,0,0,.12);}
.v4-case{display:flex;align-items:center;gap:clamp(16px,2vw,28px);padding:24px 24px 24px 0;color:#151515;text-decoration:none;}
.v4-case__img{flex:none;width:clamp(110px,11vw,170px);aspect-ratio:4/3;overflow:hidden;background:#f1f1f1;}
.v4-case__img img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.16,1,.3,1);}
.v4-case:hover .v4-case__img img{transform:scale(1.05);}
.v4-case__n{font-family:'Tanker','Anton',sans-serif;text-transform:uppercase;font-size:clamp(32px,3vw,52px);line-height:1;}
.v4-num{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;border-left:1px solid rgba(0,0,0,.12);}
.v4-num b{font-family:'Tanker','Anton',sans-serif;font-weight:400;font-size:clamp(72px,8vw,136px);line-height:.85;color:var(--c);}
.v4-tag{padding:5px 10px;border-radius:999px;font-size:12.5px;line-height:1;color:color-mix(in srgb,var(--c) 70%,#000);background:color-mix(in srgb,var(--c) 14%,#fff);}

/* ---- book a spot: the cube field (thesis: "Are / You / In" on the faces) ---- */
.v4-book{position:relative;margin-top:clamp(120px,11vw,190px);}
.cf{--cs:clamp(80px,8.6vw,140px);position:relative;height:min(105svh,980px);overflow:hidden;display:grid;place-items:center;perspective:4000px;}
.cf::before{content:"";position:absolute;inset:8% 10%;border-radius:50%;filter:blur(80px) saturate(1.3);opacity:.85;
  background:linear-gradient(var(--la),var(--lc),var(--ld));animation:hx-hue 17.3s linear infinite,hx-band 23s ease-in-out infinite alternate;}
.cf-rig{position:relative;width:0;height:0;transform-style:preserve-3d;transform:rotateX(-32deg) rotateY(45deg);}
.cf-cube{--w:var(--cs);--h:var(--cs);--d:var(--cs);position:absolute;left:0;top:0;transform-style:preserve-3d;
  transform:translate3d(calc(var(--x) * var(--cs) * 1.32), 0, calc(var(--z) * var(--cs) * 1.32)) rotateY(var(--cy,0deg));}
.cf-cube .bx-f{font-size:calc(var(--cs) * .27);}
.cf-cube .bx-top{background:#fff;font-size:calc(var(--cs) * .22);}
.cf-cube .bx-front,.cf-cube .bx-back{background:#f6f6f6;}
.cf-cube .bx-left,.cf-cube .bx-right{background:#eeeeee;}
.cf-cube .bx-f>span{transform:translateY(.05em);}
.v4-book__in{max-width:1440px;margin:0 auto;padding:clamp(48px,5vw,80px) var(--margin) 0;text-align:center;display:flex;flex-direction:column;align-items:center;}
.v4-book__in .v4-h2{margin:0 auto;}
.v4-book__in p{max-width:600px;margin:18px auto 30px;font-size:clamp(18px,1.5vw,22px);line-height:1.45;color:rgba(0,0,0,.6);}

/* ---- faq ---- */
.v4-faq__list{border-top:1px solid rgba(0,0,0,.12);}
.v4-faq details{border-bottom:1px solid rgba(0,0,0,.12);}
.v4-faq summary{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:26px 0;cursor:pointer;list-style:none;font-size:clamp(20px,1.7vw,26px);line-height:1.3;font-weight:500;}
.v4-faq summary::-webkit-details-marker{display:none;}
.v4-faq summary::after{content:"";flex:none;width:14px;height:14px;transition:transform .4s cubic-bezier(.16,1,.3,1);
  background:linear-gradient(#151515,#151515) center/100% 1.5px no-repeat,linear-gradient(#151515,#151515) center/1.5px 100% no-repeat;}
.v4-faq details[open] summary::after{transform:rotate(45deg);}
.v4-faq details p{margin:0 0 26px;max-width:720px;font-size:18px;line-height:1.5;color:rgba(0,0,0,.6);}

/* ---- close: thesis's footer ring, the call on its walls ---- */
.v4-close{max-width:1440px;margin:0 auto;padding:clamp(120px,11vw,190px) var(--margin) 0;display:flex;flex-direction:column;align-items:center;}
.fr{--a:clamp(150px,17vw,260px);--w:calc(var(--a) * 2);--h:calc(var(--w) * .2);position:relative;width:min(100%,calc(var(--w) * 1.9));height:calc(var(--a) * 1.6 + var(--h));
  display:grid;place-items:center;perspective:2600px;text-decoration:none;color:#151515;}
.fr-light,.fr>.fr-rig{grid-area:1 / 1;}
.fr-light{position:relative;width:100%;height:100%;display:grid;place-items:center;perspective:2600px;filter:blur(calc(var(--a) * .12)) saturate(1.3);opacity:.85;transition:opacity .4s ease;}
.fr:hover .fr-light{opacity:1;}
.fr-rig{position:relative;width:0;height:0;transform-style:preserve-3d;transform:rotateX(-30deg) rotateY(-45deg);}
.fr-wall{position:absolute;left:calc(var(--w) * -.505);top:calc(var(--h) / -2);width:calc(var(--w) * 1.01);height:var(--h);display:flex;align-items:center;justify-content:center;
  background:#fff;transform:rotateY(calc(var(--i) * 90deg)) translateZ(var(--a));
  font-family:'Tanker','Anton',sans-serif;text-transform:uppercase;font-size:calc(var(--h) * .5);white-space:nowrap;}
.fr-wall>span{transform:translateY(.05em);transition:letter-spacing .4s ease;}
.fr:hover .fr-wall>span{letter-spacing:.04em;}
i.fr-wall{background:linear-gradient(var(--la),var(--lc),var(--ld));animation:hx-hue 17.3s linear infinite,hx-band 23s ease-in-out infinite alternate;animation-delay:calc(var(--i) * -3s),calc(var(--i) * -4s);}
.v4-close__small{margin:8px 0 0;max-width:34em;text-align:center;font-size:15px;line-height:1.5;color:rgba(0,0,0,.5);}

/* ---- phones ---- */
@media (max-width:900px){
  .cds{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cd:nth-child(3n+2),.cd:nth-child(3n+3){margin-top:0;}
  .cd:nth-child(2n){margin-top:clamp(40px,10vw,90px);}
  .v4-phases{grid-template-columns:repeat(2,minmax(0,1fr));}
  .v4-phases li:nth-child(3){padding-left:0;border-left:0;}
  .v4-incl ul{grid-template-columns:repeat(2,minmax(0,1fr));}
  .v4-incl li:not(:nth-child(4n+1)){padding-left:0;border-left:0;}
  .v4-incl li:nth-child(2n){padding-left:16px;border-left:1px solid rgba(0,0,0,.12);}
  .v4-nums{grid-template-columns:1fr;}
  .v4-num{border-left:0;}
  .cf{--cs:clamp(56px,14vw,90px);height:80svh;}
}
@media (max-width:560px){
  .cds{grid-template-columns:1fr;}
  .cd:nth-child(2n){margin-top:0;}
  .stz{--run:min(20vw,84px);}
  .v4-phases{grid-template-columns:1fr;}
  .v4-phases li,.v4-phases li+li{padding-left:0;border-left:0;padding-bottom:12px;}
  .v4-incl ul{grid-template-columns:1fr;}
  .v4-incl li:nth-child(2n){padding-left:0;border-left:0;}
  .v4-incl li{min-height:0;}
  .fr{--a:min(30vw,130px);}
}
@media (prefers-reduced-motion:reduce){ i.bx-f,.cf::before,.v4-dot,i.fr-wall{animation:none;} }
/* the steps read on white: each face a step darker than the one above it, and more of the light let through */
.stz-step .bx-front{background:#efefef;} .stz-step .bx-right{background:#e6e6e6;} .stz-step .bx-top{background:#fff;}
.stz-light{filter:blur(calc(var(--run) * .1)) saturate(1.5);opacity:1;}
/* the card's own title is text, not a display line */
.cd-t{font-family:'General Sans','Geist',sans-serif;font-weight:600;font-size:16px;text-transform:none;letter-spacing:.005em;}