/* ============================================================
   Computing with Purpose — shared stylesheet
   Design tokens, typography, and component styles carried over
   exactly from the original single-page prototype.
   ============================================================ */

:root{
  --teal:#1D6B5A;--teal-d:#145046;--teal-m:#2A8870;--teal-l:#E0F2ED;--teal-p:#F2FAF7;
  --ink:#111917;--ink-m:#364740;--ink-s:#627068;
  --sand:#F7F4EE;--sand-m:#EDE9DF;--sand-d:#DDD8CC;
  --white:#FFFFFF;--orange:#C4622D;--orange-l:#FDF0E8;
  --purple:#5C3D8F;--purple-l:#F0EBF9;--blue:#1A4E8A;--blue-l:#EBF3FC;
  --gold:#8A6B1A;--gold-l:#FBF5E0;
  --serif:'Zilla Slab',Georgia,serif;
  --sans:'Inter',system-ui,sans-serif;
  --mono:'DM Mono',monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--white);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible{outline:3px solid var(--teal);outline-offset:3px;border-radius:3px}
ul,ol{list-style:none}
button{cursor:pointer;font-family:var(--sans);border:none;background:none}

/* SKIP */
.skip{position:absolute;top:-100%;left:1rem;background:var(--teal);color:var(--white);padding:.5rem 1rem;border-radius:6px;font-weight:600;z-index:9999}
.skip:focus{top:.75rem}

/* NAV */
.nav{position:sticky;top:0;z-index:200;background:rgba(255,255,255,.96);backdrop-filter:blur(16px);border-bottom:1px solid var(--sand-m)}
.nav-w{max-width:1140px;margin:0 auto;padding:0 2rem;height:64px;display:flex;align-items:center;justify-content:space-between;position:relative}
.nav-brand{display:flex;align-items:center;gap:.6rem;font-family:var(--serif);font-size:1.1rem;font-weight:700;color:var(--ink)}
.nav-dot{width:9px;height:9px;border-radius:50%;background:var(--teal);flex-shrink:0}
.nav-links{display:flex;align-items:center;gap:.2rem}
.nav-btn{font-size:.875rem;font-weight:500;color:var(--ink-m);padding:.45rem .8rem;border-radius:8px;transition:background .15s,color .15s}
.nav-btn:hover,.nav-btn.on{background:var(--teal-l);color:var(--teal)}
.nav-btn.on{font-weight:600}
.nav-cta{background:var(--teal)!important;color:var(--white)!important;border-radius:100px;padding:.45rem 1.1rem;margin-left:.4rem;transition:background .15s,transform .15s}
.nav-cta:hover{background:var(--teal-d)!important;transform:translateY(-1px)}
.nav-toggle{display:none;width:40px;height:40px;align-items:center;justify-content:center;border-radius:8px}
.nav-toggle:hover{background:var(--teal-l)}
.nav-toggle .bars{position:relative;width:20px;height:14px}
.nav-toggle .bars span{position:absolute;left:0;width:100%;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}
.nav-toggle .bars span:nth-child(1){top:0}
.nav-toggle .bars span:nth-child(2){top:6px}
.nav-toggle .bars span:nth-child(3){top:12px}
.nav.open .nav-toggle .bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav.open .nav-toggle .bars span:nth-child(2){opacity:0}
.nav.open .nav-toggle .bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* PAGES */
.pg{display:none}.pg.on{display:block}

/* LAYOUT */
.wrap{max-width:1140px;margin:0 auto;padding:0 2rem}
.eyebrow{font-family:var(--mono);font-size:.72rem;font-weight:500;color:var(--teal);letter-spacing:.12em;text-transform:uppercase;margin-bottom:.7rem}
.h-sec{font-family:var(--serif);font-size:clamp(1.9rem,3.5vw,2.7rem);color:var(--ink);line-height:1.12;letter-spacing:-.02em;margin-bottom:.9rem}
.sub{font-size:1rem;color:var(--ink-s);line-height:1.7;max-width:540px}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:.4rem;font-weight:600;font-size:.9rem;border-radius:100px;padding:.65rem 1.5rem;transition:transform .15s,box-shadow .15s,background .15s}
.btn:hover{transform:translateY(-2px)}
.btn-p{background:var(--teal);color:var(--white)}
.btn-p:hover{background:var(--teal-d);box-shadow:0 6px 20px rgba(29,107,90,.28)}
.btn-g{background:transparent;color:var(--teal);border:1.5px solid var(--teal)}
.btn-g:hover{background:var(--teal-l)}
.btn-w{background:var(--white);color:var(--teal)}
.btn-w:hover{background:var(--teal-l)}

/* === HOME === */
.hero{background:var(--ink);padding:7rem 0 5.5rem;position:relative;overflow:hidden}
.hero::after{content:'';position:absolute;inset:0;pointer-events:none;background:radial-gradient(ellipse 55% 70% at 75% 15%,rgba(29,107,90,.28) 0%,transparent 65%),radial-gradient(ellipse 35% 50% at 10% 85%,rgba(196,98,45,.10) 0%,transparent 55%)}
.hero-in{position:relative;z-index:1;max-width:760px}
.hero-k{font-family:var(--mono);font-size:.76rem;color:rgba(255,255,255,.42);letter-spacing:.14em;text-transform:uppercase;display:flex;align-items:center;gap:.7rem;margin-bottom:1.75rem}
.hero-k::before{content:'';display:block;width:28px;height:1.5px;background:var(--teal-m)}
.hero h1{font-family:var(--serif);font-size:clamp(3rem,6vw,4.8rem);color:var(--white);line-height:1.04;letter-spacing:-.025em;margin-bottom:1.4rem;font-weight:700}
.hero h1 .ac{color:var(--teal-m)}
.hero-d{font-size:1.1rem;color:rgba(255,255,255,.62);line-height:1.72;max-width:510px;margin-bottom:2.4rem}
.hero-btns{display:flex;gap:1rem;flex-wrap:wrap}
.hero-div{width:44px;height:3px;background:var(--teal);border-radius:2px;margin:4.5rem 0 2.75rem}
.hero-note{font-size:.86rem;color:rgba(255,255,255,.38);line-height:1.6;max-width:460px}
.hero-note a{color:rgba(255,255,255,.5);text-decoration:underline;font-size:.86rem;padding:0}

.band{background:var(--teal-p);border-top:1.5px solid #C8E6C9;border-bottom:1.5px solid #C8E6C9;padding:2rem 0}
.band-in{display:flex;align-items:flex-start;gap:1.75rem}
.band-lbl{font-family:var(--mono);font-size:.7rem;color:var(--teal);letter-spacing:.12em;text-transform:uppercase;white-space:nowrap;padding-top:.2rem;font-weight:500}
.band-txt{font-size:.95rem;color:var(--ink-m);line-height:1.65}
.band-txt strong{color:var(--teal);font-weight:600}

.sec{padding:5rem 0}
.grid-3{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.4rem;margin-top:2.75rem}

.gcard{background:var(--white);border:1.5px solid var(--sand-m);border-radius:16px;padding:1.75rem 1.9rem 1.9rem;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s,border-color .2s;cursor:pointer}
.gcard:hover{transform:translateY(-5px);box-shadow:0 16px 40px rgba(0,0,0,.10);border-color:var(--teal)}
.gcard:focus-visible{outline:3px solid var(--teal);outline-offset:3px}
.gtag{display:inline-block;font-family:var(--mono);font-size:.67rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;padding:.26rem .65rem;border-radius:100px;margin-bottom:1.1rem}
.tp{background:var(--teal-l);color:var(--teal)}
.tc{background:var(--orange-l);color:var(--orange)}
.tg{background:var(--purple-l);color:var(--purple)}
.ts{background:var(--blue-l);color:var(--blue)}
.tw{background:var(--gold-l);color:var(--gold)}
.tn{background:var(--teal-l);color:#145046}
.gcard h3{font-family:var(--serif);font-size:1.2rem;color:var(--ink);line-height:1.22;letter-spacing:-.01em;margin-bottom:.65rem;font-weight:600}
.gcard p{font-size:.875rem;color:var(--ink-s);line-height:1.62;flex:1;margin-bottom:1.4rem}
.glink{display:inline-flex;align-items:center;gap:.4rem;font-size:.85rem;font-weight:600;color:var(--teal);transition:gap .18s}
.gcard:hover .glink{gap:.7rem}

.why{background:var(--sand);padding:5rem 0}
.why-g{display:grid;grid-template-columns:1fr 1fr;gap:5rem;align-items:center}
.why-t p{color:var(--ink-m);font-size:.96rem;line-height:1.72;margin-bottom:.95rem}
.why-cards{display:flex;flex-direction:column;gap:1rem}
.wcard{background:var(--white);border-radius:14px;padding:1.4rem 1.65rem;border:1.5px solid var(--sand-m);box-shadow:0 1px 4px rgba(0,0,0,.05)}
.wnum{font-family:var(--mono);font-size:.68rem;color:var(--teal);letter-spacing:.1em;margin-bottom:.55rem;font-weight:500}
.wcard h4{font-family:var(--serif);font-size:1rem;color:var(--ink);margin-bottom:.35rem;font-weight:600;letter-spacing:-.01em}
.wcard p{font-size:.85rem;color:var(--ink-s);line-height:1.6;margin:0}

/* === GUIDES === */
.g-hero{background:var(--teal);color:var(--white);padding:5rem 0 4rem}
.g-hero h1{font-family:var(--serif);font-size:clamp(2.2rem,4vw,3.1rem);font-weight:700;letter-spacing:-.02em;margin-bottom:1rem}
.g-hero p{font-size:1rem;color:rgba(255,255,255,.7);line-height:1.68;max-width:500px}
.g-body{padding:4rem 0 6rem}

.gv-hero{background:var(--teal);color:var(--white);padding:4rem 0 3.5rem}
.back-btn{display:inline-flex;align-items:center;gap:.4rem;font-size:.875rem;color:rgba(255,255,255,.6);margin-bottom:1.75rem;transition:color .15s;padding:.3rem 0}
.back-btn:hover{color:var(--white)}
.gv-tag{font-family:var(--mono);font-size:.7rem;color:rgba(255,255,255,.5);letter-spacing:.12em;text-transform:uppercase;margin-bottom:.8rem}
.gv-hero h1{font-family:var(--serif);font-size:clamp(1.9rem,3.5vw,2.8rem);font-weight:700;letter-spacing:-.02em;margin-bottom:.85rem;line-height:1.1}
.gv-sub{font-size:1rem;color:rgba(255,255,255,.65);line-height:1.65;max-width:510px}
.gv-meta{font-size:.82rem;color:rgba(255,255,255,.45);margin-top:1.1rem}
.gbody{max-width:720px;margin:0 auto;padding:4rem 2rem 7rem}
.gbody h2{font-family:var(--serif);font-size:1.6rem;color:var(--ink);margin:2.75rem 0 .9rem;letter-spacing:-.015em;font-weight:600}
.gbody h2:first-child{margin-top:0}
.gbody h3{font-size:1.02rem;font-weight:600;color:var(--teal);margin:2rem 0 .55rem}
.gbody h4{font-family:var(--serif);font-size:.98rem;font-weight:600;color:var(--ink);margin:1.4rem 0 .4rem}
.gbody p{color:var(--ink-m);line-height:1.78;margin-bottom:1.05rem;font-size:.96rem}
.gbody ul,.gbody ol{padding-left:1.4rem;margin-bottom:1.05rem}
.gbody ul{list-style:disc}.gbody ol{list-style:decimal}
.gbody li{color:var(--ink-m);line-height:1.7;margin-bottom:.4rem;font-size:.96rem}
.gbody li strong{color:var(--ink)}
.gbody a{color:var(--teal);text-decoration:underline;text-underline-offset:2px}
.callout{background:var(--teal-p);border-left:3.5px solid var(--teal);border-radius:0 8px 8px 0;padding:1rem 1.4rem;margin:1.5rem 0;font-size:.92rem;color:var(--teal);font-style:italic;line-height:1.65}
.callout strong{font-weight:700}
.gdiv{height:1px;background:var(--sand-m);margin:2.5rem 0}
.g-nav{display:flex;justify-content:space-between;gap:1rem;margin-top:3rem;padding-top:2rem;border-top:1px solid var(--sand-m);flex-wrap:wrap}
.g-nav a{font-size:.85rem;font-weight:600;color:var(--teal)}
.g-nav a:hover{text-decoration:underline}

/* screenshots inside guide bodies */
.g-shot{margin:1.75rem 0;border:1.5px solid var(--sand-m);border-radius:12px;overflow:hidden;background:var(--sand);box-shadow:0 4px 16px rgba(0,0,0,.06)}
.g-shot img{display:block;width:100%;height:auto}
.g-shot figcaption{padding:.7rem 1.1rem;font-size:.8rem;color:var(--ink-s);border-top:1px solid var(--sand-m);line-height:1.5}

/* tables inside guide bodies */
.table-wrap{overflow-x:auto;margin:1.5rem 0 1.75rem;border:1.5px solid var(--sand-m);border-radius:10px}
.gbody table{width:100%;border-collapse:collapse;font-size:.88rem;min-width:480px}
.gbody table caption{caption-side:top;text-align:left;font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--teal);padding:.75rem 1rem 0}
.gbody th{background:var(--teal-p);color:var(--teal-d);font-family:var(--sans);font-weight:600;text-align:left;padding:.7rem .9rem;border-bottom:1.5px solid var(--sand-d);font-size:.82rem}
.gbody td{padding:.7rem .9rem;border-bottom:1px solid var(--sand-m);color:var(--ink-m);line-height:1.55;vertical-align:top}
.gbody tr:last-child td{border-bottom:none}
.gbody td strong{color:var(--ink)}

/* === ABOUT === */
.about-hero{background:var(--ink);color:var(--white);padding:6rem 0 5rem}
.about-hero h1{font-family:var(--serif);font-size:clamp(2.4rem,4.5vw,3.8rem);font-weight:700;letter-spacing:-.025em;line-height:1.08;margin-bottom:1.2rem}
.about-hero h1 em{color:var(--teal-m);font-style:italic}
.about-hero p{font-size:1.05rem;color:rgba(255,255,255,.6);max-width:510px;line-height:1.7}
.about-g{display:grid;grid-template-columns:3fr 2fr;gap:4rem;align-items:start;padding:5rem 0}
.astory p{color:var(--ink-m);font-size:.96rem;line-height:1.76;margin-bottom:1.05rem}
.astory h3{font-family:var(--serif);font-size:1.15rem;color:var(--ink);font-weight:600;margin:2rem 0 .6rem;letter-spacing:-.01em}
.aside-card{background:var(--sand);border-radius:14px;padding:1.4rem 1.65rem;border:1.5px solid var(--sand-m);margin-bottom:1.15rem}
.aside-lbl{font-family:var(--mono);font-size:.68rem;color:var(--teal);letter-spacing:.1em;text-transform:uppercase;margin-bottom:.65rem;font-weight:500}
.aside-card h4{font-family:var(--serif);font-size:.98rem;color:var(--ink);margin-bottom:.45rem;font-weight:600}
.aside-card p{font-size:.85rem;color:var(--ink-s);line-height:1.65;margin:0}
.pills{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:.85rem}
.pill{font-size:.76rem;background:var(--teal-l);color:var(--teal);padding:.27rem .7rem;border-radius:100px;font-weight:500}
.role-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:1rem}
.role-card{background:var(--white);border:1.5px solid var(--sand-m);border-radius:12px;padding:1.2rem 1.4rem}
.role-lbl{font-family:var(--mono);font-size:.66rem;color:var(--teal);letter-spacing:.1em;text-transform:uppercase;margin-bottom:.45rem;font-weight:500}
.role-card h4{font-size:.9rem;color:var(--ink);font-weight:600;margin-bottom:.3rem;line-height:1.3}
.role-card p{font-size:.82rem;color:var(--ink-s);line-height:1.55;margin:0}

/* === RESEARCH === */
.res-hero{background:var(--ink);color:var(--white);padding:6rem 0 5rem}
.res-hero h1{font-family:var(--serif);font-size:clamp(2.1rem,4vw,3.3rem);font-weight:700;letter-spacing:-.02em;line-height:1.1;margin-bottom:1.1rem}
.res-hero p{font-size:1rem;color:rgba(255,255,255,.58);max-width:510px;line-height:1.7}
.res-body{padding:5rem 0 6rem}
.res-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;margin-top:2.75rem}
.rcard{background:var(--sand);border:1.5px solid var(--sand-m);border-radius:14px;padding:1.75rem}
.rnum{font-family:var(--mono);font-size:.68rem;color:var(--teal);letter-spacing:.1em;margin-bottom:.8rem;font-weight:500}
.rcard h3{font-family:var(--serif);font-size:1.1rem;color:var(--ink);margin-bottom:.65rem;font-weight:600;line-height:1.22;letter-spacing:-.01em}
.rcard p{font-size:.86rem;color:var(--ink-s);line-height:1.62;margin:0}
.paper-block{background:var(--ink);color:var(--white);border-radius:16px;padding:2.75rem;margin-top:3.5rem}
.p-lbl{font-family:var(--mono);font-size:.7rem;color:var(--teal-m);letter-spacing:.12em;text-transform:uppercase;margin-bottom:.9rem;font-weight:500}
.paper-block h3{font-family:var(--serif);font-size:1.4rem;color:var(--white);margin-bottom:.9rem;font-weight:600;letter-spacing:-.015em;line-height:1.2}
.paper-block p{font-size:.9rem;color:rgba(255,255,255,.52);line-height:1.7;margin-bottom:.8rem}
.paper-block p:last-child{margin:0}
.lit-block{margin-top:3.5rem}
.lit-item{border-left:3px solid var(--teal);padding:1.1rem 0 1.1rem 1.6rem;margin-bottom:1.1rem}
.lit-item h4{font-family:var(--serif);font-size:1rem;color:var(--ink);margin-bottom:.4rem;font-weight:600}
.lit-item p{font-size:.875rem;color:var(--ink-s);line-height:1.62;margin:0}

/* === TEAM === */
.team-hero{background:var(--teal);color:var(--white);padding:5.5rem 0 4.5rem}
.team-hero h1{font-family:var(--serif);font-size:clamp(2.1rem,4vw,3.1rem);font-weight:700;letter-spacing:-.02em;margin-bottom:.9rem}
.team-hero p{font-size:1rem;color:rgba(255,255,255,.68);max-width:490px;line-height:1.68}
.team-body{padding:5rem 0 6rem}
.team-cards{display:grid;grid-template-columns:1fr 1fr;gap:2rem;margin-top:3rem}
.tcard{background:var(--white);border:1.5px solid var(--sand-m);border-radius:20px;padding:2.25rem;box-shadow:0 1px 4px rgba(0,0,0,.05)}
.tav{width:64px;height:64px;border-radius:50%;background:var(--teal-l);display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:1.5rem;color:var(--teal);margin-bottom:1.4rem;font-weight:700}
.trole{font-family:var(--mono);font-size:.68rem;color:var(--teal);letter-spacing:.1em;text-transform:uppercase;margin-bottom:.45rem;font-weight:500}
.tcard h3{font-family:var(--serif);font-size:1.3rem;color:var(--ink);margin-bottom:.22rem;font-weight:700;letter-spacing:-.015em}
.taffil{font-size:.82rem;color:var(--ink-s);margin-bottom:1.1rem}
.tcard p{font-size:.875rem;color:var(--ink-m);line-height:1.7}
.tcard p+p{margin-top:.75rem}
.tdiv{height:1px;background:var(--sand-m);margin:1.3rem 0}
.ttag{display:inline-block;font-size:.75rem;background:var(--teal-l);color:var(--teal);padding:.25rem .65rem;border-radius:100px;margin:.22rem .18rem 0 0;font-weight:500}
.collab-b{background:var(--sand);padding:3.5rem 0 4.5rem}
.cgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;margin-top:2.25rem}
.cc{background:var(--white);border:1.5px solid var(--sand-m);border-radius:12px;padding:1.4rem}
.cn{font-family:var(--serif);font-size:.98rem;color:var(--ink);font-weight:600;margin-bottom:.28rem}
.cd{font-size:.83rem;color:var(--ink-s);line-height:1.58}
.ack-text{margin-top:2.25rem;max-width:640px}
.ack-text p{color:var(--ink-m);font-size:.96rem;line-height:1.76;margin-bottom:1.05rem}
.ack-text a{color:var(--teal);text-decoration:underline;text-underline-offset:2px}

/* FOOTER */
.foot{background:var(--ink);color:rgba(255,255,255,.38);padding:3.25rem 0}
.foot-in{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:2rem}
.f-brand{font-family:var(--serif);font-size:1.05rem;color:rgba(255,255,255,.68);font-weight:700;margin-bottom:.45rem}
.f-brand span{color:var(--teal-m)}
.f-tag{font-size:.8rem;color:rgba(255,255,255,.3);line-height:1.5;max-width:240px}
.f-links{display:flex;flex-direction:column;gap:.45rem}
.f-link{font-size:.83rem;color:rgba(255,255,255,.42);transition:color .15s;background:none;border:none;cursor:pointer;font-family:var(--sans);text-align:left;padding:0}
.f-link:hover{color:rgba(255,255,255,.72)}
.f-meta{font-size:.78rem;text-align:right;line-height:1.6}
.f-a11y{font-size:.75rem;color:rgba(255,255,255,.26);margin-top:.3rem}

@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important}html{scroll-behavior:auto}}
@media(max-width:860px){
  .nav-toggle{display:flex}
  .nav-links{position:absolute;top:64px;left:0;right:0;background:var(--white);border-bottom:1px solid var(--sand-m);flex-direction:column;align-items:stretch;padding:.5rem 1rem 1rem;gap:.15rem;display:none;box-shadow:0 12px 24px rgba(0,0,0,.06)}
  .nav.open .nav-links{display:flex}
  .nav-btn{width:100%}
  .nav-cta{margin-left:0;text-align:center;margin-top:.4rem}
  .why-g,.about-g,.team-cards{grid-template-columns:1fr;gap:2.25rem}
  .res-grid,.cgrid,.role-grid{grid-template-columns:1fr}
  .band-in{flex-direction:column;gap:.65rem}
  .foot-in{flex-direction:column}
  .f-meta{text-align:left}
}