/* ============================================================
   Northchart — shared site styles (index, technology-partner, work)
   Brand kit v1: Newsreader speaks, Public Sans labels.
   Navy carries, teal structures, signal red once per screen.
   ============================================================ */

:root{
  --ink:#14283F; --ink-deep:#0C1B2E; --slate:#3B4E66; --mist:#EEF2F5; --paper:#FFFFFF;
  --signal:#C6403B; --signal-deep:#A93430; --teal:#2E7D74; --teal-soft:#7FC5BC; --line:#D8E0E6;
  --muted-on-navy:#B9C6D4; --dim-on-navy:#8FA0B4; --sand:#E8DCC8;
  --display:'Newsreader',Georgia,serif; --body:'Public Sans',-apple-system,"Segoe UI",sans-serif;
  --radius:12px; --radius-sm:8px;
  --shadow:0 18px 50px rgba(20,40,63,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--body);color:var(--ink);background:var(--paper);font-size:17px;line-height:1.65;overflow-x:hidden}
img,svg{display:block;max-width:100%}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
.narrow{max-width:700px;margin:0 auto;padding:0 24px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
::selection{background:var(--teal);color:#fff}

/* ---------- Type ---------- */
h1,h2,h3{font-family:var(--display);font-weight:500;letter-spacing:-.005em}
h1{font-size:clamp(2.15rem,5vw,3.4rem);line-height:1.1;max-width:18ch;text-wrap:balance}
h1 em{font-style:normal;color:var(--signal)}
h2{font-size:clamp(1.65rem,3.4vw,2.25rem);line-height:1.18;max-width:26ch;margin-bottom:1.1rem;text-wrap:balance}
h3{font-size:1.25rem;line-height:1.3}
p{color:var(--slate);max-width:62ch}
.lede{font-size:1.12rem;max-width:58ch;margin:1.4rem 0 2rem}
.kicker,.label{display:flex;align-items:center;gap:.7rem;font-size:.78rem;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--teal);margin-bottom:1.1rem}
.kicker::before,.label::before{content:"";width:22px;height:2px;background:var(--teal);border-radius:2px;flex:none}
.note{font-size:.9rem;color:var(--slate);margin-top:1.1rem}

/* ---------- Buttons ---------- */
.btnrow{display:flex;gap:.9rem;flex-wrap:wrap;align-items:center}
.btn{display:inline-flex;align-items:center;gap:.55rem;text-decoration:none;font-weight:600;font-size:1rem;padding:.9rem 1.5rem;border-radius:var(--radius-sm);min-height:48px;transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s}
.btn.primary{background:var(--ink);color:var(--paper);box-shadow:0 6px 18px rgba(20,40,63,.18)}
.btn.primary:hover{background:var(--ink-deep);transform:translateY(-1px);box-shadow:0 10px 24px rgba(20,40,63,.22)}
.btn.ghost{color:var(--ink);border:1.5px solid var(--ink);background:transparent}
.btn.ghost:hover{background:var(--paper);border-color:var(--teal);color:var(--teal)}
.btn .arrow{display:inline-block;transition:transform .2s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
a:focus-visible,.btn:focus-visible,button:focus-visible{outline:3px solid var(--teal);outline-offset:3px;border-radius:4px}

/* ---------- Header ---------- */
header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.86);-webkit-backdrop-filter:saturate(160%) blur(12px);backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid transparent;transition:border-color .25s,box-shadow .25s}
header.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(20,40,63,.06)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px;gap:1rem}
.brand{display:flex;align-items:center;gap:.65rem;text-decoration:none}
.brand svg{transition:transform .3s var(--ease)}
.brand:hover svg{transform:rotate(-6deg)}
.brand span{font-family:var(--display);font-size:1.32rem;font-weight:600;color:var(--ink)}
.navlinks{display:flex;align-items:center;gap:1.6rem}
.navlinks a{font-size:.93rem;color:var(--slate);text-decoration:none;font-weight:500;position:relative;padding:.35rem 0}
.navlinks a:not(.cta)::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--teal);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease)}
.navlinks a:not(.cta):hover::after,.navlinks a[aria-current="page"]::after{transform:scaleX(1)}
.navlinks a:hover,.navlinks a[aria-current="page"]{color:var(--ink)}
.navlinks a.cta{color:var(--paper);background:var(--ink);padding:.66rem 1.15rem;border-radius:var(--radius-sm);font-weight:600;transition:background .2s}
.navlinks a.cta:hover{background:var(--ink-deep)}
.navtoggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--paper);cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.navtoggle i{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s var(--ease),opacity .2s}
.navtoggle[aria-expanded="true"] i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.navtoggle[aria-expanded="true"] i:nth-child(2){opacity:0}
.navtoggle[aria-expanded="true"] i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero: chart-paper motif ---------- */
.hero{position:relative;padding:88px 0 72px;background:var(--mist);overflow:hidden;isolation:isolate}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;
  background-image:linear-gradient(to right,rgba(20,40,63,.07) 1px,transparent 1px),linear-gradient(to bottom,rgba(20,40,63,.07) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(ellipse 70% 90% at 80% 40%,#000 20%,transparent 75%);mask-image:radial-gradient(ellipse 70% 90% at 80% 40%,#000 20%,transparent 75%)}
.hero .wrap{position:relative}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero-art{position:relative}
.hero-art svg{width:100%;height:auto;overflow:visible}
.hero-art .grid line{stroke:rgba(20,40,63,.12);stroke-width:1}
.hero-art .axis{stroke:var(--ink);stroke-width:1.5;opacity:.35}
.hero-art .line{fill:none;stroke:var(--teal);stroke-width:3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1200;stroke-dashoffset:1200;animation:draw 2.6s var(--ease) forwards .4s}
.hero-art .area{fill:url(#heroFill);opacity:0;animation:fade 1s ease forwards 2.2s}
.hero-art .pt{fill:var(--paper);stroke:var(--teal);stroke-width:3;opacity:0;animation:pop .5s var(--ease) forwards}
.hero-art .pt.quiet{stroke:var(--signal)}
.hero-art .pt:nth-of-type(1){animation-delay:1.1s}.hero-art .pt:nth-of-type(2){animation-delay:1.6s}.hero-art .pt:nth-of-type(3){animation-delay:2.1s}.hero-art .pt:nth-of-type(4){animation-delay:2.7s}
.hero-art .tip{opacity:0;animation:fade .5s ease forwards 3s}
.hero-art .tip rect{fill:var(--ink)}
.hero-art .tip text{fill:#fff;font-family:var(--body);font-size:11px;font-weight:700;letter-spacing:.08em}
.hero-art .ylab{fill:var(--slate);font-family:var(--body);font-size:10.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase}
.hero-art .xlab{fill:var(--slate);font-family:var(--body);font-size:11px}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes fade{to{opacity:1}}
@keyframes pop{from{opacity:0;transform:scale(.4);transform-box:fill-box;transform-origin:center}to{opacity:1;transform:scale(1);transform-box:fill-box;transform-origin:center}}
.trace{display:block;width:100%;height:56px;margin-top:56px}
.trace path{stroke:var(--teal);stroke-width:2;fill:none;opacity:.7;stroke-dasharray:2400;stroke-dashoffset:2400;animation:draw 3.2s ease-out forwards .3s}

/* ---------- Sections ---------- */
section{padding:88px 0;position:relative}
.dark{background:var(--ink);color:var(--paper);position:relative;overflow:hidden;isolation:isolate}
.dark .label{color:var(--teal-soft)}.dark .label::before{background:var(--teal-soft)}
.dark h2,.dark h3{color:var(--paper)}
.dark p{color:var(--muted-on-navy)}
.dark .watermark{position:absolute;right:-40px;bottom:-60px;width:min(46vw,520px);height:auto;opacity:.06;z-index:-1;pointer-events:none}
.dark .watermark path{stroke:#fff;fill:none;stroke-width:7;stroke-linecap:round;stroke-linejoin:round}
.dark .watermark .notch{fill:var(--signal);stroke:none}
.mist{background:var(--mist)}
.section-head{max-width:66ch}
.section-head p{font-size:1.06rem}

/* ---------- Cards (generic) ---------- */
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:1.8rem 1.6rem;position:relative;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}
.card::before{content:"";position:absolute;left:1.6rem;right:1.6rem;top:0;height:3px;border-radius:0 0 3px 3px;background:var(--teal);transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease)}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.card:hover::before{transform:scaleX(1)}
.card h3{margin-bottom:.55rem}
.card p{font-size:.96rem;max-width:none}
.dark .card{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.13)}
.dark .card:hover{background:rgba(255,255,255,.08);box-shadow:0 18px 50px rgba(0,0,0,.28);border-color:rgba(127,197,188,.4)}
.dark .card::before{background:var(--teal-soft)}
.card .step{font-family:var(--display);font-size:2rem;color:var(--teal-soft);opacity:.6;line-height:1;margin-bottom:.8rem;font-variant-numeric:tabular-nums}
.card .price{margin-top:auto;padding-top:1rem;border-top:1px solid rgba(255,255,255,.13);font-size:.88rem;color:var(--teal-soft);font-weight:600;display:flex;align-items:center;gap:.4rem}

/* ---------- Contact: paper card on navy ---------- */
.contact{background:var(--ink);color:var(--paper);padding:96px 0;position:relative;overflow:hidden;isolation:isolate}
.contact::before{content:"";position:absolute;inset:0;z-index:-1;background:
  radial-gradient(ellipse 60% 70% at 100% 0%,rgba(46,125,116,.28),transparent 60%),
  radial-gradient(ellipse 50% 50% at 0% 100%,rgba(127,197,188,.10),transparent 60%)}
.contact::after{content:"";position:absolute;inset:0;z-index:-1;
  background-image:linear-gradient(to right,rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(to bottom,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(ellipse 60% 80% at 20% 30%,#000 10%,transparent 70%);mask-image:radial-gradient(ellipse 60% 80% at 20% 30%,#000 10%,transparent 70%)}
.contact .grid{display:grid;grid-template-columns:1fr 1.05fr;gap:64px;align-items:start}
.contact .label{color:var(--teal-soft)}.contact .label::before{background:var(--teal-soft)}
.contact h2{color:var(--paper);margin-bottom:1rem}
.contact .intro>p{color:var(--muted-on-navy);font-size:1.06rem;max-width:44ch}
.contact .steps{list-style:none;margin-top:2.2rem;display:grid;gap:1.05rem}
.contact .steps li{display:flex;gap:1rem;align-items:flex-start;color:var(--muted-on-navy);font-size:.97rem}
.contact .steps li b{display:block;color:var(--paper);font-weight:600;margin-bottom:.1rem}
.contact .steps .n{flex:none;width:34px;height:34px;border-radius:50%;border:1.5px solid rgba(127,197,188,.55);color:var(--teal-soft);font-family:var(--display);font-size:1.05rem;display:grid;place-items:center;margin-top:.05rem}
.contact .orbook{margin-top:2rem;font-size:.95rem;color:var(--muted-on-navy)}
.contact .orbook a{color:var(--teal-soft);text-decoration:none;font-weight:600;border-bottom:1px solid rgba(127,197,188,.4)}
.contact .orbook a:hover{border-bottom-color:var(--teal-soft)}
.contact .alt{margin-top:.8rem;font-size:.95rem;color:var(--muted-on-navy)}
.contact .alt a{color:var(--teal-soft);text-decoration:none;font-weight:600}

/* ---------- Footer ---------- */
footer{padding:28px 0;background:var(--ink-deep);color:var(--dim-on-navy);font-size:.85rem}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:.5rem 1.5rem;align-items:center}
footer a{color:var(--dim-on-navy);text-decoration:none;border-bottom:1px solid rgba(143,160,180,.35)}
footer a:hover{color:#fff;border-bottom-color:#fff}
footer .fl{display:flex;align-items:center;gap:.6rem}

/* ---------- Reveal on scroll (only when JS is running) ---------- */
.js [data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js [data-reveal].in{opacity:1;transform:none}
.js [data-reveal-stagger]>*{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.js [data-reveal-stagger].in>*{opacity:1;transform:none}
.js [data-reveal-stagger].in>*:nth-child(2){transition-delay:.1s}
.js [data-reveal-stagger].in>*:nth-child(3){transition-delay:.2s}
.js [data-reveal-stagger].in>*:nth-child(4){transition-delay:.3s}
.js [data-reveal-stagger].in>*:nth-child(5){transition-delay:.4s}
.js [data-reveal-stagger].in>*:nth-child(6){transition-delay:.5s}

/* ---------- Reading progress (case study) ---------- */
.progress{position:fixed;top:0;left:0;height:3px;width:100%;transform-origin:left;transform:scaleX(0);background:var(--teal);z-index:50;pointer-events:none}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-art{max-width:520px}
  .contact .grid{grid-template-columns:1fr;gap:40px}
}
@media(max-width:820px){
  section{padding:64px 0}.hero{padding:56px 0 48px}.contact{padding:72px 0}
  .navtoggle{display:flex}
  .navlinks{position:absolute;left:0;right:0;top:74px;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0;padding:.5rem 24px 1rem;display:none;box-shadow:0 20px 40px rgba(20,40,63,.12)}
  .navlinks.open{display:flex}
  .navlinks a{padding:.85rem 0;font-size:1.02rem;border-bottom:1px solid var(--line)}
  .navlinks a:not(.cta)::after{display:none}
  .navlinks a.cta{margin-top:.8rem;text-align:center;border:none}
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-delay:0s!important;transition-duration:.01ms!important}
  .hero-art .line,.trace path{stroke-dashoffset:0!important}
  .hero-art .area,.hero-art .pt,.hero-art .tip{opacity:1!important}
  .js [data-reveal],.js [data-reveal-stagger]>*{opacity:1;transform:none}
}