/* /original-doc/ -- page-local styles. Shared shell comes from /assets/site.css */

/* ---------- section rail (pattern from /join) ---------- */
.rail{position:fixed;left:22px;top:50%;transform:translateY(-50%);z-index:40}
.rail ul{list-style:none;display:flex;flex-direction:column;gap:2px}
.rail a{display:flex;align-items:center;gap:11px;padding:5px 10px 5px 6px;text-decoration:none;border-radius:999px;border:1px solid transparent;transition:background .18s ease,border-color .18s ease}
.rail a:hover{text-decoration:none}
.rail .rdot{width:7px;height:7px;border-radius:50%;background:#3b4250;flex-shrink:0;transition:background .2s ease,box-shadow .2s ease,transform .2s ease}
.rail .rlab{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);white-space:nowrap;transition:color .2s ease}
.rail a:hover{background:rgba(19,19,22,.92);border-color:var(--line)}
.rail a:hover .rdot{background:var(--accent);transform:scale(1.25)}
.rail a:hover .rlab{color:var(--text)}
.rail a.cur .rdot{background:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.rail a.cur .rlab{color:var(--text)}
@media (max-width:1430px){
  .rail .rlab{max-width:0;overflow:hidden;opacity:0;transform:translateX(-4px);transition:max-width .28s ease,opacity .22s ease,transform .28s ease,color .2s ease}
  .rail:hover a{background:rgba(19,19,22,.92);border-color:var(--line)}
  .rail:hover .rlab{max-width:200px;opacity:1;transform:none}
}
/* phase group headers in the rail: small, bold, subtle chip background */
.rail .grp{display:flex;align-items:center;gap:11px;padding:13px 0 4px;pointer-events:none}
.rail .grp-first{padding-top:0}
.rail .grp .gdot{width:7px;height:7px;flex-shrink:0;display:flex;align-items:center;justify-content:center}
.rail .grp .gdot::before{content:"";width:7px;height:1px;background:#3b4250;border-radius:1px}
.rail .grp .glab{
  font-family:var(--mono);font-size:11.5px;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:#99a1b2;white-space:nowrap;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  border-radius:6px;padding:4px 10px;line-height:1;
}
.rail .grp.gcur .glab{color:#fff;background:var(--accent-soft);border-color:rgba(90,120,255,.55);box-shadow:0 0 0 1px rgba(90,120,255,.18)}
.rail .grp.gcur .gdot::before{background:var(--accent-bright)}
@media (max-width:1430px){
  .rail .grp .glab{max-width:0;overflow:hidden;opacity:0;padding:0;border-color:transparent;
    transition:max-width .28s ease,opacity .22s ease,padding .28s ease}
  .rail:hover .grp .glab{max-width:190px;opacity:1;padding:4px 10px;border-color:var(--line)}
  .rail .grp{padding-top:10px}
}
@media (max-width:1080px){.rail{display:none}}
@media (prefers-reduced-motion:reduce){.rail,.rail .rlab,.rail .rdot{transition:none}}

/* ---------- doc hero ---------- */
/* ---------------------------------------------------------------
   Layout system copied from /join/: ONE wrap width for every band
   (so every block shares a left edge), and line length controlled
   on the TEXT itself rather than by narrowing containers.
   --------------------------------------------------------------- */
/* EXACTLY /join/: --wrap 1120px, 24px gutter, on every band.
   NOTHING inside a wrap declares its own width. One column, no exceptions. */
:root{--wrap:1120px}
.doc-hero .wrap,.note-band .wrap,.toc .wrap,.doc .wrap,.vs .wrap,.cta .wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}

.doc-hero{position:relative;padding:150px 0 54px;overflow:hidden}
.doc-hero::before{content:"";position:absolute;top:-320px;left:50%;transform:translateX(-50%);width:1000px;height:700px;background:radial-gradient(ellipse at center,rgba(37,73,255,.15) 0%,transparent 62%);pointer-events:none}
.doc-hero .wrap{position:relative}
.doc-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:60px;align-items:center}
.doc-hero-cover{position:relative}
.doc-hero-cover picture{display:block}
.doc-hero-cover img{width:100%;height:auto;filter:drop-shadow(0 26px 52px rgba(0,0,0,.55));transform:rotate(-1.5deg);transition:transform .35s ease}
.doc-hero-cover img:hover{transform:rotate(0deg) translateY(-4px)}
.doc-hero h1{font-family:var(--display);font-weight:800;font-size:clamp(30px,4.2vw,44px);line-height:1.06;letter-spacing:-.025em;margin-bottom:22px}
.doc-hero h1 em{font-style:normal;color:var(--accent-bright)}
.eyebrow b{font-weight:700}
.doc-lede strong{color:var(--text);font-weight:600}
.doc-lede{font-size:clamp(17px,2vw,19.5px);color:var(--muted);margin-bottom:30px}
.doc-meta{display:flex;gap:26px;flex-wrap:wrap;font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--dim);padding-top:22px;margin-top:30px;border-top:1px solid var(--line)}
.doc-meta b{color:var(--text);font-weight:500}

/* ---------- the 2026 note (amber: this is the OLD guide) ---------- */
/* the note now lives BELOW the hero in its own centred column, so it shares
   the exact left edge as the contents + chapters + comparison (820px). */
.note-band{padding:0 0 4px}

.note{background:linear-gradient(150deg,rgba(232,179,57,.11),rgba(232,179,57,.04));border:1px solid rgba(232,179,57,.42);border-left:4px solid var(--warn);border-radius:12px;padding:30px 34px;margin:0}
.note h2{font-family:var(--display);font-size:19px;font-weight:700;margin-bottom:14px;letter-spacing:-.01em;color:var(--warn);display:flex;align-items:center;gap:11px}
.note h2::before{content:"!";display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;flex-shrink:0;border-radius:50%;background:var(--warn);color:#0e0e10;font-family:var(--body);font-size:15px;font-weight:800;line-height:1}
.note p{color:#ddd7c6;font-size:16px;margin-bottom:12px}
.note p:last-child{margin-bottom:0}
.note strong{color:#fff3d6;font-weight:600}

/* ---------- contents ---------- */
.toc{padding:72px 0 14px}

.toc-head{display:flex;align-items:baseline;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:14px}
.toc-intro{color:var(--muted);font-size:16px;margin-bottom:22px}
.toc-intro strong{color:var(--text);font-weight:600}
.toc h2{font-family:var(--display);font-size:clamp(24px,3vw,32px);font-weight:800;letter-spacing:-.02em}
.toc-meta{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim)}

/* ---- phase accordion: START HERE / FIND / BUILD / RANK / RENT / SCALE ---- */
/* NOTE: site.css applies `section{padding:104px 0}` to every bare <section>.
   These accordion groups are <section> elements, so the padding MUST be reset
   or each collapsed phase reserves ~208px of empty space. */
.toc-acc{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--card);counter-reset:t}
.toc-acc .acc{padding:0}
.acc + .acc{border-top:1px solid var(--line)}
.acc-h{
  width:100%;display:grid;grid-template-columns:auto 1fr auto auto;align-items:center;gap:16px;
  padding:16px 20px;background:none;border:none;cursor:pointer;text-align:left;
  font-family:var(--body);transition:background .16s ease;
}
.acc-h:hover{background:var(--card-hover)}
.acc-b{
  font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--accent-bright);font-weight:600;
}
.acc-d{color:var(--muted);font-size:15.5px}
.acc-c{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);white-space:nowrap}
.acc-x{
  position:relative;width:11px;height:11px;flex-shrink:0;
  transition:transform .26s ease;
}
.acc-x::before,.acc-x::after{
  content:"";position:absolute;background:var(--accent-bright);border-radius:2px;
  transition:opacity .26s ease;
}
.acc-x::before{left:0;top:4.5px;width:11px;height:2px}
.acc-x::after{left:4.5px;top:0;width:2px;height:11px}
.acc.is-open .acc-x{transform:rotate(90deg)}
.acc.is-open .acc-x::after{opacity:0}
.acc.is-open .acc-h{background:var(--accent-soft)}

.acc-p{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease}
.acc.is-open .acc-p{grid-template-rows:1fr}
.acc-p > .toc-list{overflow:hidden;min-height:0}

.toc-list{list-style:none;margin:0;border:none;border-radius:0;background:none}
.toc-list li{counter-increment:t;border-top:1px solid var(--line)}
@media (prefers-reduced-motion:reduce){
  .acc-p{transition:none}
  .acc-x{transition:none}
}
.toc-list a{
  display:grid;grid-template-columns:52px 1fr auto;align-items:center;
  padding:0 20px 0 0;min-height:50px;color:var(--text);font-size:16.5px;
  text-decoration:none;transition:background .16s ease;
}
.toc-list a::before{
  content:counter(t,decimal-leading-zero);
  font-family:var(--mono);font-size:12.5px;color:var(--dim);
  text-align:center;transition:color .16s ease;
}
.toc-list a:hover{background:var(--card-hover);text-decoration:none}
.toc-list a:hover::before{color:var(--accent-bright)}
.toc-list a:hover .toc-t{color:#fff}
.toc-t{padding:13px 0;line-height:1.35}
.toc-tag{
  font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--warn);background:rgba(232,179,57,.1);border:1px solid rgba(232,179,57,.32);
  border-radius:999px;padding:4px 10px;white-space:nowrap;margin-left:16px;
}

.toc-foot{
  display:flex;align-items:center;gap:12px;margin-top:14px;
  border:1px solid rgba(90,120,255,.34);border-radius:12px;
  background:linear-gradient(135deg,rgba(37,73,255,.14),rgba(37,73,255,.05));
  padding:16px 20px;color:var(--text);font-size:16px;text-decoration:none;
  transition:border-color .18s ease,background .18s ease;
}
.toc-foot:hover{border-color:var(--accent-bright);background:linear-gradient(135deg,rgba(37,73,255,.2),rgba(37,73,255,.08));text-decoration:none}
.toc-foot .arw{margin-left:auto;color:var(--accent-bright);font-size:18px;line-height:1}
.toc-foot strong{color:#fff;font-weight:600}

@media (max-width:600px){
  .acc-h{grid-template-columns:1fr auto;gap:6px 12px;padding:14px 16px}
  .acc-d{grid-column:1;grid-row:2;font-size:14px}
  .acc-c{grid-column:1;grid-row:3;margin-top:2px}
  .acc-x{grid-column:2;grid-row:1}
  .toc-list a{grid-template-columns:40px 1fr;padding-right:16px;min-height:auto}
  .toc-tag{grid-column:2;justify-self:start;margin:0 0 12px}
  .toc-t{padding:12px 0 6px}
  .toc-list a:has(.toc-tag) .toc-t{padding-bottom:4px}
}

/* ---------- document body ---------- */
.doc{padding:20px 0 90px}

/* ANCHOR LANDING — measured, not guessed.
   site.css sets html{scroll-padding-top:88px}. scroll-padding and scroll-margin ADD
   (88+84 = 172px of dead space, which is the bug Herc reported). So: zero the inherited
   scroll-padding here and let scroll-margin alone own the offset.
   102px = 72px nav + 30px gap above the "Chapter NN" eyebrow. */
html{scroll-padding-top:0}
section.ch{padding-top:0;margin-top:62px;scroll-margin-top:102px}
section.ch h2{font-family:var(--display);font-size:clamp(25px,3.2vw,34px);font-weight:800;line-height:1.14;letter-spacing:-.022em;margin-bottom:8px}
section.ch .ch-num{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-bright);display:block;margin-bottom:12px}
section.ch h3{font-family:var(--display);font-size:20.5px;font-weight:700;letter-spacing:-.01em;margin:36px 0 12px}
.doc p{color:#d6d6dc;margin-bottom:18px;font-size:17px}
.doc ul,.doc ol{margin:0 0 20px 22px;color:#d6d6dc}
.doc li{margin-bottom:9px}
.doc li strong{color:var(--text)}
.doc hr{border:none;border-top:1px solid var(--line);margin:52px 0 0}
.doc a{color:var(--accent-bright)}

.kicker{font-family:var(--display);font-size:20px;font-weight:700;color:var(--text);line-height:1.3;margin:26px 0 20px;padding-left:18px;border-left:3px solid var(--accent)}

/* "what we use today in 2026" -- amber update block at the TOP of a dated section */
.now{background:linear-gradient(150deg,rgba(232,179,57,.11),rgba(232,179,57,.035));border:1px solid rgba(232,179,57,.42);border-left:4px solid var(--warn);border-radius:12px;padding:22px 26px;margin:0 0 32px}
.now .now-h{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--warn);font-weight:500;margin-bottom:12px}
.now .now-h::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--warn);box-shadow:0 0 0 3px rgba(232,179,57,.18);flex-shrink:0}
.now p{color:#ddd7c6;font-size:15.5px;margin:0}
.now p + p{margin-top:10px}
.now strong{color:#fff3d6;font-weight:600}
.now a{color:var(--warn);text-decoration:underline;text-underline-offset:2px}
.now a:hover{color:#f5cd6a}

/* product logos inside a 2026 update block */
.now-logos{display:flex;align-items:center;gap:26px;flex-wrap:wrap;margin-top:18px;padding-top:16px;border-top:1px solid rgba(232,179,57,.22)}
.now-logos a{display:inline-flex;align-items:center;text-decoration:none;opacity:.92;transition:opacity .18s ease,transform .18s ease}
.now-logos a:hover{opacity:1;transform:translateY(-1px);text-decoration:none}
.now-logos img{height:26px;width:auto;display:block}
@media (max-width:640px){
  .now-logos{gap:18px}
  .now-logos img{height:22px}
}

.script{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:24px 26px;margin:0 0 22px;font-size:16px;color:#d6d6dc}
.script .lbl{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);display:block;margin-bottom:12px}
.script p{margin-bottom:14px}
.script p:last-child{margin-bottom:0}

figure{margin:30px 0}
figure img{border-radius:10px;border:1px solid var(--line);background:#fff;cursor:zoom-in;width:100%;height:auto}
figcaption{font-family:var(--mono);font-size:12px;letter-spacing:.05em;color:var(--dim);margin-top:10px;text-transform:uppercase}

.recap{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:24px 26px;margin:26px 0}
.recap ul{list-style:none;margin:0}
.recap li{margin-bottom:16px;padding-left:26px;position:relative}
.recap li:last-child{margin-bottom:0}
.recap li::before{content:"\2713";position:absolute;left:0;top:0;color:var(--ok);font-weight:700}

/* ---------- 2015 vs 2026 core steps ---------- */
.vs{padding:0 0 20px;margin-top:78px;border-top:1px solid var(--line);scroll-margin-top:102px}

.vs-head{margin-bottom:36px}
.vs-head h2{font-family:var(--display);font-size:clamp(26px,3.4vw,38px);font-weight:800;letter-spacing:-.025em;line-height:1.1;margin-bottom:16px}
.vs-head p{color:var(--muted);font-size:17px}
.vs-head strong{color:var(--text);font-weight:600}

.vs-table{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--card)}
.vs-row{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid var(--line)}
.vs-row:last-child{border-bottom:none}
.vs-row.vs-hd{background:rgba(255,255,255,.02)}
.vs-cell{padding:16px 22px;border-right:1px solid var(--line);display:flex;flex-direction:column;justify-content:center;gap:7px}
.vs-cell:last-child{border-right:none}
.vs-hd .vs-cell{padding:14px 22px;font-family:var(--mono);font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;font-weight:500}
.vs-hd .then{color:#5f6470}
.vs-hd .now-c{color:var(--accent-bright);background:rgba(37,73,255,.09)}
.vs-step{grid-column:1 / -1;padding:13px 22px 6px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#8a8f9c;border-bottom:1px solid var(--line);background:rgba(255,255,255,.018)}
.vs-step em{font-style:normal;display:inline-block;color:var(--accent-bright);background:var(--accent-soft);border:1px solid rgba(90,120,255,.3);border-radius:999px;padding:2px 9px;margin-right:11px;font-size:10px;letter-spacing:.14em}
.vs-cell.then{color:#7e838f;font-size:15.5px}
.vs-cell.then strong{color:#9aa0ac;font-weight:600}
.vs-cell.now-c{color:#e8ecff;font-size:15.5px;background:linear-gradient(135deg,rgba(37,73,255,.16),rgba(37,73,255,.06))}
.vs-cell.now-c strong{color:#fff;font-weight:600}
.vs-cell.then img{filter:grayscale(1);opacity:.4}
.vs-cell img{height:22px;width:auto;display:block;margin-top:3px}
.vs-logos{display:flex;align-items:center;gap:16px;flex-wrap:wrap}

.vs-foot{margin-top:30px;background:linear-gradient(150deg,rgba(37,73,255,.16),rgba(37,73,255,.05));border:1px solid rgba(90,120,255,.4);border-left:4px solid var(--accent);border-radius:12px;padding:24px 28px}
.vs-foot p{color:#dbe1fb;font-size:16.5px;margin:0}
.vs-foot p + p{margin-top:10px}
.vs-foot strong{color:#fff;font-weight:600}

@media (max-width:760px){
  .vs-row{grid-template-columns:1fr}
  .vs-row.vs-hd{display:none}
  .vs-cell{border-right:none;border-bottom:1px solid var(--line)}
  .vs-cell:last-child{border-bottom:none}
  .vs-cell.then::before{content:"2015";display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.13em;color:#5f6470;margin-bottom:3px}
  .vs-cell.now-c::before{content:"2026";display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.13em;color:var(--accent-bright);margin-bottom:3px}
}

.cta{padding:56px 0 100px}
.cta-card{background:linear-gradient(150deg,var(--accent-soft),rgba(19,19,22,.6));border:1px solid var(--line);border-radius:18px;padding:44px 42px;text-align:center;margin:0}
.cta-card h2{font-family:var(--display);font-size:clamp(24px,3.2vw,33px);font-weight:800;letter-spacing:-.02em;margin-bottom:16px}
.cta-card p{color:var(--muted);margin:0 auto 28px;font-size:17px}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

.lb{position:fixed;inset:0;background:rgba(6,6,8,.94);z-index:200;display:none;align-items:center;justify-content:center;padding:36px;cursor:zoom-out}
.lb.open{display:flex}
.lb img{max-width:100%;max-height:86vh;width:auto;border-radius:8px;box-shadow:0 30px 80px rgba(0,0,0,.6)}
.lb-cap{position:absolute;bottom:24px;left:0;right:0;text-align:center;font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.lb-x{position:absolute;top:20px;right:26px;background:none;border:none;color:var(--muted);font-size:34px;line-height:1;cursor:pointer}
.lb-x:hover{color:var(--text)}

@media (max-width:900px){
  .doc-hero-grid{grid-template-columns:1fr;gap:30px}
  .doc-hero-cover{max-width:260px;order:-1}
}
@media (max-width:640px){
  .doc-hero{padding:120px 0 48px}
  .doc-hero-cover{max-width:210px}
  .note,.cta-card{padding:24px 22px}
  .doc-meta{gap:16px}
}

/* back to top: bottom-right, mirrors the rail's visual language */
.totop{
  position:fixed;right:26px;bottom:26px;z-index:60;
  width:46px;height:46px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(19,19,22,.96);border:1px solid rgba(90,120,255,.5);
  color:var(--accent-bright);cursor:pointer;padding:0;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s,background .18s ease,border-color .18s ease,color .18s ease;
  box-shadow:0 8px 28px rgba(0,0,0,.5);
}
.totop.on{opacity:1;visibility:visible;transform:none}
.totop:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-2px)}
.totop:focus-visible{outline:2px solid var(--accent-bright);outline-offset:3px}
.totop svg{width:17px;height:17px;display:block}
@media (max-width:640px){.totop{right:16px;bottom:16px;width:42px;height:42px}}
@media (prefers-reduced-motion:reduce){.totop{transition:opacity .01s,visibility .01s}}