/* Shared styles for the multi-part case-study write-up.
   Audit · Opportunities · Experience · Operating model · Measurement · Artifacts */
:root{
  --paper:#F6F2EB; --paper-2:#FBF8F2; --surface:#fff; --ink:#1B2620; --ink-2:#46544C; --ink-3:#5C6A61;
  --line:#E6DFD2; --line-2:#D8CFBE; --green-900:#152C23; --green-700:#234739; --green-600:#326552;
  --green-50:#EAF1ED; --green-100:#D7E7DD; --green-200:#B6D2C2; --honey:#C58A34; --honey-600:#9A6B1E;
  --sans:'Hanken Grotesk',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --serif:'Newsreader',Georgia,serif;
  --sh-1:0 1px 2px rgba(27,38,32,.05),0 4px 12px -4px rgba(27,38,32,.06);
  --sh-2:0 14px 34px -14px rgba(21,44,35,.2),0 3px 8px rgba(27,38,32,.05);
}
*{box-sizing:border-box;margin:0;}
body{font-family:var(--sans);color:var(--ink);background:var(--paper);font-size:1.0625rem;line-height:1.62;-webkit-font-smoothing:antialiased;}
a{color:var(--green-700);text-decoration:underline;text-underline-offset:2px;}

/* Shared top nav */
.topbar{background:var(--green-900);color:#DCE7DF;font-size:.85rem;position:sticky;top:0;z-index:10;}
.topbar-inner{max-width:820px;margin:0 auto;padding:.55rem 1.25rem;display:flex;gap:.7rem;align-items:center;flex-wrap:wrap;}
.tb-home{color:#fff;font-weight:700;text-decoration:none;white-space:nowrap;}
.tb-home:hover{color:#C9E3D2;}
.topbar .sep{color:#4A5A50;}
.tb-nav{display:flex;gap:.2rem .1rem;flex-wrap:wrap;align-items:center;}
.tb-nav a{color:#B9CEC0;font-weight:600;text-decoration:none;padding:.2rem .5rem;border-radius:6px;white-space:nowrap;}
.tb-nav a:hover{color:#fff;background:rgba(255,255,255,.06);}
.tb-nav a[aria-current="page"]{color:#fff;background:var(--green-700);}
.tb-nav a:focus-visible{outline:2px solid #fff;outline-offset:2px;}

.wrap{max-width:780px;margin:0 auto;padding:2.4rem 1.25rem 4rem;}

/* Part header */
header.doc{margin-bottom:1.6rem;border-bottom:1px solid var(--line);padding-bottom:1.4rem;}
.eyebrow{display:inline-flex;align-items:center;gap:.5rem;font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--green-700);margin-bottom:.7rem;}
.eyebrow::before{content:"";width:1.5rem;height:2px;background:var(--honey);border-radius:2px;}
h1{font-family:var(--serif);font-weight:500;font-size:clamp(1.9rem,1.2rem+2.4vw,2.6rem);line-height:1.12;letter-spacing:-.015em;margin:.1rem 0 .5rem;text-wrap:balance;}
.lead{font-size:1.12rem;color:var(--ink-2);max-width:66ch;text-wrap:pretty;}

h2{font-family:var(--serif);font-weight:500;font-size:1.5rem;letter-spacing:-.01em;margin:2.4rem 0 .5rem;padding-top:.3rem;scroll-margin-top:4rem;}
h3{font-family:var(--serif);font-weight:500;font-size:1.2rem;margin:1.6rem 0 .3rem;color:var(--green-900);}
p{margin:.55rem 0;}
ul,ol{margin:.5rem 0 1rem;padding-left:1.3rem;}
li{margin:.35rem 0;}
strong{font-weight:700;}
em{font-style:italic;}
code{font-family:ui-monospace,Menlo,monospace;font-size:.9em;background:#efeadf;border:1px solid var(--line);border-radius:5px;padding:.05rem .35rem;}
.note{color:var(--ink-3);font-size:.92rem;font-style:italic;max-width:66ch;}

/* Framing / callouts */
.pull{position:relative;margin:1.3rem 0;padding:1rem 1.3rem;background:var(--paper-2);border:1px solid var(--line);border-left:4px solid var(--honey);border-radius:0 12px 12px 0;font-size:1.08rem;color:var(--ink);text-wrap:pretty;}
.pull strong{color:var(--green-900);}
.callout{background:var(--green-50);border:1px solid var(--green-100);border-radius:12px;padding:.9rem 1.15rem;margin:1rem 0;font-size:.98rem;}
.callout strong{color:var(--green-900);}

/* Tables */
table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.9rem;}
th,td{text-align:left;padding:.55rem .6rem;border-bottom:1px solid var(--line);vertical-align:top;}
th{font-family:var(--sans);font-weight:700;color:var(--green-900);background:var(--green-50);}
tbody tr:nth-child(even){background:#FBF8F2;}

hr{border:0;border-top:1px solid var(--line);margin:2.2rem 0;}

/* Opportunity cards */
.opp{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--green-600);border-radius:14px;padding:1.15rem 1.35rem .5rem;margin:1.1rem 0;box-shadow:var(--sh-1);}
.opp:first-of-type{border-left-color:var(--honey);}
.opp h3{margin-top:.1rem;color:var(--green-900);}
.opp ul{margin-bottom:.4rem;}
.opp .conf{margin-top:.55rem;padding-top:.55rem;border-top:1px dashed var(--line);color:var(--green-900);list-style:none;margin-left:-1.3rem;padding-left:0;}
.opp .conf strong{color:var(--green-700);}

/* Prev / next footer */
.prevnext{margin-top:2.6rem;padding-top:1.4rem;border-top:1px solid var(--line);display:flex;gap:.9rem;flex-wrap:wrap;}
.pn{flex:1 1 200px;display:flex;flex-direction:column;gap:.2rem;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:.85rem 1.1rem;text-decoration:none;color:inherit;box-shadow:var(--sh-1);transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease;}
.pn:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--green-200);}
.pn:focus-visible{outline:3px solid var(--green-700);outline-offset:2px;}
.pn.next{text-align:right;align-items:flex-end;}
.pn-dir{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--green-700);}
.pn-title{font-family:var(--serif);font-size:1.08rem;color:var(--ink);}

@media (max-width:560px){.prevnext{flex-direction:column;}}
@media print{.topbar,.prevnext{display:none;}body{background:#fff;}.wrap{max-width:none;}table,li,.opp{break-inside:avoid;}}