/* ══════════════════════════════════════════════════════════════
   about-v2.css
   About page components. Loaded after home-v2.css, which supplies the
   shared language: .wrap, section padding, .ch-head, .ovl, .ghost, .h2,
   .lead, .btn, .rv, .sig, .grain, .bf browser frame, .fi accordion,
   .cl ledger, .tags, .hlist, .spec.

   Nothing here restyles a homepage component. Every selector is .ab-*
   or a scoped override, so the two pages cannot drift apart.

   Surface rule, same as the homepage: acid only on black or panel.
   ══════════════════════════════════════════════════════════════ */

/* ── 01 hero ───────────────────────────────────────────────── */
.ab-hero{padding:150px 0 110px}
.ab-hero-g{display:grid;grid-template-columns:1.1fr .9fr;gap:72px;align-items:center}
.ab-hero h1{font-size:var(--h1);line-height:1.12;letter-spacing:-.025em;max-width:15ch;margin-bottom:26px}
.ab-hero .lead{max-width:56ch}
.ab-hero .lead+.lead{margin-top:16px}
.ab-cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}

.ab-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--ll);margin-top:44px}
.ab-strip div{padding:22px 18px 0 28px;border-left:1px solid var(--ll)}
.ab-strip div:first-child{border-left:none;padding-left:0}
.ab-strip b{display:block;font-family:var(--mono);font-weight:500;font-size:1.25rem;letter-spacing:-.01em;color:var(--black)}
.ab-strip small{display:block;margin-top:7px;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--gray);line-height:1.5}

/* portrait folio with technical annotations */
.ab-folio{position:relative}
.ab-folio-img{display:block;width:100%;height:auto;border-radius:18px;border:1px solid var(--ll)}
.ab-folio-meta{position:absolute;left:-16px;bottom:28px;background:var(--black);border:1px solid rgba(233,255,92,.45);border-radius:12px;padding:16px 20px}
.ab-folio-meta b{display:block;font-family:var(--mono);font-size:1.2rem;color:var(--acid);line-height:1}
.ab-folio-meta small{display:block;margin-top:7px;font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--gray-s)}
.ab-annot{position:absolute;right:-10px;top:26px;display:flex;flex-direction:column;gap:8px;align-items:flex-end}
.ab-annot span{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--gray);background:var(--paper);border:1px solid var(--ll);border-radius:100px;padding:5px 12px}

/* ── 02 operating principle ────────────────────────────────── */
.ab-statement{font-size:clamp(1.15rem,1.7vw,1.35rem);line-height:1.55;font-weight:500;color:var(--paper);max-width:30ch}
.ab-scenario{list-style:none;margin:26px 0 0;padding:0;display:grid;gap:0;border-top:1px solid var(--ld)}
.ab-scenario li{padding:15px 0 15px 30px;border-bottom:1px solid var(--ld);color:var(--gray-s);font-size:14.5px;line-height:1.6;position:relative}
.ab-scenario li::before{content:attr(data-n);position:absolute;left:0;top:16px;font-family:var(--mono);font-size:10px;letter-spacing:.1em;color:var(--acid)}
.ab-conclusion{margin-top:30px;font-size:16px;color:var(--paper);border-left:2px solid var(--acid);padding:6px 0 6px 20px;max-width:44ch}

/* ── 03 career, stepped ascending stair ────────────────────────
   Five bands. Content indents 24px further each row and the progress bar
   on the right gains a tick, so reading down the page the work visibly
   climbs. Ink only, no acid on this light surface. */
.ab-stair{list-style:none;margin:56px 0 0;padding:0}
.ab-st{display:grid;grid-template-columns:140px minmax(0,1fr) 132px;gap:32px;align-items:start;padding:34px 0;border-top:1px solid var(--ll);position:relative;transition:background-color .2s}
.ab-st:last-child{border-bottom:1px solid var(--ll)}
.ab-st:hover{background:rgba(10,10,10,.03)}

.ab-st-yr{font-family:var(--mono);font-size:11.5px;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:rgba(10,10,10,.6);padding-top:4px}

/* the staircase: each row indents one step further than the one above */
.ab-st-main{margin-left:calc(var(--row) * 24px);position:relative}
.ab-st-main h3{font-size:var(--h3);letter-spacing:-.015em;line-height:1.3;margin-bottom:10px;color:var(--black)}
.ab-st-main p{font-size:14px;line-height:1.7;color:var(--gray);margin:0;max-width:520px}
/* connector from the previous row's baseline into this row's indent */
.ab-st:not(:first-child) .ab-st-main::before{content:"";position:absolute;left:-24px;top:-35px;width:24px;height:1px;background:rgba(10,10,10,.18)}
.ab-st:not(:first-child) .ab-st-main::after{content:"";position:absolute;left:-24px;top:-35px;width:1px;height:26px;background:rgba(10,10,10,.18)}
/* the story arrives here */
.ab-st.is-now .ab-st-main{border-left:2px solid var(--black);margin-left:calc(var(--row) * 24px - 20px);padding-left:18px}

/* progress: five vertical ticks, filled ones climb row by row */
.ab-st-prog{display:flex;align-items:flex-end;gap:6px;justify-self:end;height:30px;padding-top:4px}
.ab-st-prog i{display:block;width:4px;height:100%;background:var(--black);opacity:.15;border-radius:1px}
.ab-st-prog i.on{opacity:1;transform:scaleY(0);transform-origin:bottom}
.ab-stair.go .ab-st-prog i.on{transform:scaleY(1);transition:transform .45s cubic-bezier(.4,0,.2,1);transition-delay:calc(var(--row) * 80ms + var(--i) * 60ms)}

/* ── 04 disciplines matrix ─────────────────────────────────── */
.ab-mx{display:grid;grid-template-columns:1fr 64px 1fr;margin-top:56px;align-items:start}
.ab-mx-col{display:grid}
.ab-mx-item{padding:30px 0;border-top:1px solid var(--ll)}
.ab-mx-col:first-child .ab-mx-item{padding-right:34px;text-align:right}
.ab-mx-col:last-child .ab-mx-item{padding-left:34px}
.ab-mx-num{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;color:var(--gray)}
.ab-mx-item h3{font-size:var(--h3);letter-spacing:-.015em;margin:10px 0 8px}
.ab-mx-item p{font-size:14px;line-height:1.65;color:var(--gray);margin:0}
.ab-mx-spine{position:relative;justify-self:center;width:1.5px;background:var(--ll);height:100%}
.ab-mx-spine i{position:absolute;left:50%;transform:translateX(-50%);width:9px;height:9px;border-radius:50%;background:var(--acid);border:1px solid var(--black)}
.ab-mx-note{margin-top:34px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--gray);text-align:center}

/* ── 05 verified proof ─────────────────────────────────────── */
.ab-proof{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;margin-top:52px}
.ab-pf{border:1px solid var(--ld);background:var(--panel);padding:32px 28px;grid-column:span 2;display:flex;flex-direction:column;transition:border-color .25s}
.ab-pf:hover{border-color:rgba(233,255,92,.4)}
.ab-pf-lead{grid-column:span 3}
.ab-pf-wide{grid-column:span 4}
.ab-pf b{font-family:var(--mono);font-weight:500;font-size:clamp(1.5rem,2.6vw,2.2rem);color:var(--acid);letter-spacing:-.02em;line-height:1;display:block}
.ab-pf-lead b{font-size:clamp(1.9rem,3.4vw,2.9rem)}
.ab-pf em{font-family:var(--mono);font-style:normal;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--paper);display:block;margin-top:14px}
.ab-pf p{font-size:13.5px;line-height:1.65;color:var(--gray-s);margin-top:10px}
.ab-pf .ab-src{margin-top:auto;padding-top:18px;font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--gray-s);opacity:.65}

/* ── 06 selected experience ────────────────────────────────── */
.ab-projects{display:grid;grid-template-columns:repeat(6,1fr);gap:24px;margin-top:52px}
.ab-pj{grid-column:span 2;display:flex;flex-direction:column;text-decoration:none;color:var(--black)}
.ab-pj-lead{grid-column:span 3}
.ab-pj .bf{margin-bottom:16px}
.ab-pj .bf .ph{min-height:150px}
.ab-pj-lead .bf .ph{min-height:210px}
.ab-pj-kick{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--gray)}
.ab-pj h3{font-size:var(--h3);letter-spacing:-.015em;margin:9px 0 7px}
.ab-pj p{font-size:13.5px;line-height:1.6;color:var(--gray);margin:0}
.ab-pj-note{display:inline-block;margin-top:10px;font-family:var(--mono);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--gray);border:1px dashed var(--ll);border-radius:100px;padding:4px 10px}
a.ab-pj:hover h3{text-decoration:underline;text-underline-offset:3px}

/* ── 07 approach ───────────────────────────────────────────── */
.ab-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:56px;position:relative}
.ab-steps::before{content:"";position:absolute;top:9px;left:0;right:0;height:1px;background:var(--ld)}
.ab-step{position:relative;padding-top:38px}
.ab-step::before{content:"";position:absolute;top:4px;left:0;width:11px;height:11px;border-radius:50%;background:var(--black);border:1.5px solid var(--acid)}
.ab-step-n{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--acid);display:block;margin-bottom:10px}
.ab-step h3{font-size:var(--h3);color:var(--paper);margin-bottom:10px;letter-spacing:-.015em}
.ab-step p{font-size:14px;line-height:1.65;color:var(--gray-s);margin:0}
.ab-approach-note{margin-top:44px;padding-top:26px;border-top:1px solid var(--ld);font-size:16px;color:var(--paper);max-width:52ch}

/* ── 08 difference ─────────────────────────────────────────────
   Every row uses the same three tracks so the numbers, titles and
   descriptions line up on identical vertical guides. No stagger. */
.ab-diff{margin-top:52px;border-top:1px solid var(--ll)}
.ab-df{display:grid;grid-template-columns:64px minmax(220px,.8fr) minmax(0,1.2fr);gap:32px;padding:36px 0;border-bottom:1px solid var(--ll);align-items:start}
.ab-df-n{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--gray);padding-top:6px}
.ab-df h3{font-size:var(--h3);letter-spacing:-.015em}
.ab-df p{font-size:15px;line-height:1.7;color:var(--gray);margin:0;max-width:560px}

/* ── 09 toolkit ────────────────────────────────────────────── */
.ab-kit{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:52px;border-top:1px solid var(--ll)}
.ab-kit-col{padding:30px 26px 0 28px;border-left:1px solid var(--ll)}
.ab-kit-col:first-child{border-left:none;padding-left:0}
.ab-kit-col h3{font-family:var(--mono);font-weight:500;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--gray);margin-bottom:18px}
.ab-kit-col ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.ab-kit-col li{font-size:14px;color:var(--black);padding-left:16px;position:relative;line-height:1.5}
.ab-kit-col li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:1px;background:var(--black)}

/* ── 10 working style ──────────────────────────────────────── */
.ab-style{display:grid;grid-template-columns:repeat(2,1fr);gap:0;margin-top:52px;border-top:1px solid var(--ld)}
.ab-style-item{padding:32px 40px 32px 28px;border-bottom:1px solid var(--ld);border-left:1px solid var(--ld)}
.ab-style-item:nth-child(odd){border-left:none;padding-left:0}
.ab-style-item h3{font-size:var(--h3);color:var(--paper);margin-bottom:10px;letter-spacing:-.015em}
.ab-style-item p{font-size:14.5px;line-height:1.7;color:var(--gray-s);margin:0;max-width:46ch}

/* ── 11 final cta ──────────────────────────────────────────── */
.ab-cta-g{display:grid;grid-template-columns:1.1fr .9fr;gap:72px;align-items:start}
.ab-cta-btns{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}

/* ══ RESPONSIVE ════════════════════════════════════════════ */
@media(max-width:1100px){
  .ab-proof,.ab-projects{grid-template-columns:repeat(4,1fr)}
  .ab-pf-lead,.ab-pf-wide,.ab-pj-lead{grid-column:span 2}
}
@media(max-width:960px){
  .ab-hero{padding:120px 0 84px}
  .ab-hero-g,.ab-cta-g{grid-template-columns:1fr;gap:44px}
  .ab-folio{max-width:440px}
  .ab-annot{right:8px}
  .ab-st{grid-template-columns:140px minmax(0,1fr);gap:10px 28px;padding:30px 0}
  .ab-st-main{margin-left:calc(var(--row) * 12px)}
  .ab-st.is-now .ab-st-main{margin-left:calc(var(--row) * 12px - 18px);padding-left:16px}
  .ab-st:not(:first-child) .ab-st-main::before{left:-12px;width:12px;top:-31px}
  .ab-st:not(:first-child) .ab-st-main::after{left:-12px;top:-31px;height:24px}
  .ab-st-prog{grid-column:1;grid-row:2;justify-self:start;height:auto;align-items:center;gap:5px;padding-top:6px}
  .ab-st-prog i{width:16px;height:4px}
  .ab-mx{grid-template-columns:1fr}
  .ab-mx-spine{display:none}
  .ab-mx-col:first-child .ab-mx-item{padding-right:0;text-align:left}
  .ab-mx-col:last-child .ab-mx-item{padding-left:0}
  .ab-steps{grid-template-columns:repeat(2,1fr);gap:32px}
  .ab-steps::before{display:none}
  .ab-kit{grid-template-columns:repeat(2,1fr)}
  .ab-kit-col:nth-child(odd){border-left:none;padding-left:0}
  .ab-kit-col:nth-child(n+3){border-top:1px solid var(--ll);margin-top:26px;padding-top:26px}
  .ab-df{grid-template-columns:48px 1fr;gap:14px 18px;padding:30px 0}
  .ab-df p{grid-column:2 / -1;max-width:none}
}
@media(max-width:720px){
  .ab-strip{grid-template-columns:1fr 1fr}
  .ab-strip div:nth-child(odd){border-left:none;padding-left:0}
  .ab-strip div:nth-child(n+3){border-top:1px solid var(--ll);margin-top:22px;padding-top:22px}
  .ab-proof,.ab-projects{grid-template-columns:repeat(2,1fr)}
  .ab-style{grid-template-columns:1fr}
  .ab-style-item,.ab-style-item:nth-child(odd){border-left:none;padding:26px 0}
}
@media(max-width:600px){
  .ab-hero{padding:104px 0 68px}
  .ab-strip{grid-template-columns:1fr}
  .ab-strip div,.ab-strip div:nth-child(odd){border-left:none;padding:20px 0 0;border-top:1px solid var(--ll);margin-top:0}
  .ab-strip div:first-child{border-top:none}
  .ab-proof,.ab-projects{grid-template-columns:1fr}
  .ab-pf,.ab-pf-lead,.ab-pf-wide,.ab-pj,.ab-pj-lead{grid-column:span 1}
  .ab-steps{grid-template-columns:1fr;gap:26px}
  .ab-kit{grid-template-columns:1fr}
  .ab-kit-col{border-left:none;padding:24px 0 0}
  .ab-kit-col:nth-child(n+2){border-top:1px solid var(--ll);margin-top:24px;padding-top:24px}
  .ab-folio-meta{position:static;margin-top:14px;display:inline-block}
  .ab-annot{display:none}
}
@media(prefers-reduced-motion:reduce){
  .ab-pf:hover{border-color:var(--ld)}
}

/* career rail, vertical timeline on phones, same pattern as the homepage */
/* career stair, single column stack on phones, no indentation */
@media(max-width:640px){
  .ab-st{grid-template-columns:1fr;gap:12px;padding:28px 0}
  .ab-st-yr{padding-top:0}
  .ab-st-main,.ab-st.is-now .ab-st-main{padding-left:0;margin-left:0;border-left:none}
  .ab-st.is-now .ab-st-main{border-left:2px solid var(--black);padding-left:16px}
  .ab-st:not(:first-child) .ab-st-main::before,
  .ab-st:not(:first-child) .ab-st-main::after{display:none}
  .ab-st-prog{grid-column:1;grid-row:auto;justify-self:start}
}

@media(prefers-reduced-motion:reduce){
  .ab-st-prog i.on{transform:none}
  .ab-stair.go .ab-st-prog i.on{transition:none}
}

/* ── AEO answer block ──────────────────────────────────────── */
.ab-aeo{padding:0 0 96px}
.ab-aeo-g{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:start;padding-top:44px;border-top:1px solid var(--ll)}
.ab-aeo-g .h2{max-width:16ch}
.ab-aeo-g a{color:var(--black);border-bottom:2px solid var(--black);text-decoration:none}
.ab-aeo-g a:hover{opacity:.65}
@media(max-width:960px){.ab-aeo-g{grid-template-columns:1fr;gap:22px}.ab-aeo{padding-bottom:72px}}

/* ── section 01 rail, acid on the dark surface ─────────────── */
.dark .rail-line{background:var(--ld)}
.dark .rail-fill{background:var(--acid)}
.dark .rn i{border-color:var(--acid);background:var(--black)}
.dark .rail.go .rn i{background:var(--acid);transition:background .3s;transition-delay:calc(var(--i) * 80ms)}
.dark .rn em{color:var(--gray-s)}
.dark .rn b{color:var(--paper)}
@media(max-width:860px){
  .dark .rail{padding-left:26px}
  .dark .rail-line{display:block;top:0;bottom:0;left:5px;right:auto;width:1.5px;height:auto}
  .dark .rail-fill{display:block;top:0;left:5px;width:1.5px;height:0;transition:height 1.8s cubic-bezier(.4,0,.2,1)}
  .dark .rail.go .rail-fill{height:100%}
  .dark .rail-n{grid-template-columns:1fr;gap:18px}
  .dark .rn{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:baseline;position:relative}
  .dark .rn i{position:absolute;left:-26px;top:5px;margin:0}
}