/* BlueGreen Research and Consultancy – site styles
   Palette: river ink + tide blue, with the logo's leaf green and cyan as accents. */
:root{
  --ink:#0b2c38; --ink-2:#12404f; --tide:#0e6a82; --cyan:#12c0e0; --leaf:#00be63; --leaf-deep:#08773f;
  --paper:#fff; --mist:#f3f8f8; --silt:#d5e3e2; --text:#16323b; --muted:#4a6068;
  --tint-leaf:#e7f6ee; --tint-cyan:#e4f4f9;
  --w:1120px;
  --serif:"Source Serif 4",Georgia,"Times New Roman",serif;
  --sans:"Public Sans","Segoe UI",system-ui,-apple-system,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font:400 17px/1.65 var(--sans);color:var(--text);background:var(--paper);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto}
a{color:var(--tide);text-underline-offset:3px}
a:hover{color:var(--ink)}
:focus-visible{outline:3px solid var(--tide);outline-offset:3px;border-radius:3px}
.dark :focus-visible,.topbar :focus-visible,footer :focus-visible{outline-color:var(--cyan)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:12px;top:-60px;background:var(--ink);color:#fff;padding:10px 16px;border-radius:6px;z-index:50}
.skip:focus{top:12px}

h1,h2{font-family:var(--serif);color:var(--ink);font-weight:600;letter-spacing:-.012em;margin:0}
h1{font-size:clamp(2.2rem,4.6vw,3.5rem);line-height:1.08}
h2{font-size:clamp(1.65rem,2.7vw,2.2rem);line-height:1.2}
h3{font:650 1.12rem/1.35 var(--sans);color:var(--ink);margin:0 0 6px}
p{margin:0 0 1em}
.lead{font-size:1.12rem;color:var(--muted);max-width:60ch}
.wrap{max-width:var(--w);margin:0 auto}
section{padding:80px 20px}
.mist{background:var(--mist)}
.sec-head{margin-bottom:38px}
.sec-head p{margin:12px 0 0}

/* ---------- top bar & header ---------- */
.topbar{background:var(--ink);color:#cfe3e2;font-size:.86rem}
.topbar-in{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:7px 20px;flex-wrap:wrap}
.topbar a{color:#cfe3e2;text-decoration:none;display:inline-flex;align-items:center;gap:7px}
.topbar a:hover{color:#fff}
.tb-left{display:flex;gap:22px;flex-wrap:wrap}
.tb-right{display:flex;gap:14px}
.topbar svg{width:15px;height:15px;fill:currentColor}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--silt)}
.nav{display:flex;align-items:center;gap:28px;padding:10px 20px}
.brand{display:flex;margin-right:auto}
.brand img{height:46px;width:auto;display:block}
.menu{display:flex;align-items:center;gap:26px;list-style:none;margin:0;padding:0}
.menu a:not(.btn){color:var(--text);text-decoration:none;font-weight:500;font-size:.96rem;padding:6px 0;background:linear-gradient(var(--leaf),var(--leaf)) 0 100%/0 2px no-repeat;transition:background-size .25s ease,color .2s}
.menu a:not(.btn):hover{color:var(--ink);background-size:100% 2px}
.menu a[aria-current]:not(.btn){color:var(--ink);background-size:100% 2px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--silt);border-radius:6px;background:#fff;cursor:pointer;padding:0;position:relative}
.nav-toggle span:not(.sr){position:absolute;left:11px;right:11px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s,opacity .2s,top .25s}
.nav-toggle span:nth-child(1){top:15px}.nav-toggle span:nth-child(2){top:21px}.nav-toggle span:nth-child(3){top:27px}
.nav-toggle[aria-expanded=true] span:nth-child(1){top:21px;transform:rotate(45deg)}
.nav-toggle[aria-expanded=true] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded=true] span:nth-child(3){top:21px;transform:rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{--bg:var(--ink);--fg:#fff;--sweep:var(--leaf-deep);--bd:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 26px;border-radius:6px;
  font:600 .98rem/1 var(--sans);letter-spacing:.005em;text-decoration:none;cursor:pointer;
  background:var(--bg);color:var(--fg);border:1.5px solid var(--bd);position:relative;overflow:hidden;isolation:isolate;
  transition:color .25s,border-color .25s,box-shadow .25s,transform .15s}
.btn::before{content:"";position:absolute;inset:0;background:var(--sweep);transform:translateX(-101%);transition:transform .32s cubic-bezier(.3,.7,.2,1);z-index:-1}
.btn:hover{color:var(--fg);border-color:var(--sweep);box-shadow:0 10px 22px -10px rgba(11,44,56,.55)}
.btn:hover::before{transform:none}
.btn:active{transform:translateY(1px)}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
.btn-line{--bg:transparent;--fg:var(--ink);--sweep:var(--ink);--bd:var(--ink)}
.btn-line:hover{color:#fff}
.btn-leaf{--bg:var(--leaf);--fg:#04281a;--sweep:#fff;--bd:var(--leaf)}
.btn-leaf:hover{color:var(--ink)}
.btn-ghost-light{--bg:transparent;--fg:#fff;--sweep:#fff;--bd:rgba(255,255,255,.55)}
.btn-ghost-light:hover{color:var(--ink)}
.btn-sm{min-height:42px;padding:0 20px;font-size:.92rem}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

/* ---------- hero ---------- */
.hero{padding:44px 20px 56px;background:linear-gradient(180deg,#fff 0%,var(--mist) 100%);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:40px;align-items:center}
.hero h1{max-width:15em}
.hero .lead{margin:22px 0 0}
.hero-note{margin-top:30px;padding-top:18px;border-top:1px solid var(--silt);color:var(--muted);font-size:.93rem;max-width:46ch}
.hero-note b{color:var(--ink);font-weight:650}
.emblem{position:relative;aspect-ratio:640/560;width:100%;max-width:600px;margin-left:auto}
.emblem svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.emblem .contours{fill:none;stroke-width:1.5;opacity:.7}
.emblem .rip{fill:none;stroke:var(--cyan);stroke-width:1.6}
.emblem img{position:absolute;left:50%;top:50%;width:50%;transform:translate(-50%,-50%);filter:drop-shadow(0 6px 18px rgba(255,255,255,.9))}
.js .contours path{stroke-dasharray:1;stroke-dashoffset:1;animation:draw 2.6s cubic-bezier(.45,0,.2,1) forwards;animation-delay:calc(var(--i)*80ms)}
.js .emblem img{opacity:0;animation:logo-in .9s ease-out 1.1s forwards}
.rip{transform-box:fill-box;transform-origin:center;opacity:0;animation:ripple 8s ease-out infinite;animation-delay:calc(2.2s + var(--r)*2.6s)}
.contours{transform-origin:320px 280px;animation:breathe 16s ease-in-out 3s infinite alternate}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes logo-in{from{opacity:0;transform:translate(-50%,-47%) scale(.96)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}
@keyframes ripple{0%{transform:scale(.9);opacity:0}14%{opacity:.6}100%{transform:scale(2.45);opacity:0}}
@keyframes breathe{from{transform:scale(1)}to{transform:scale(1.035) rotate(1.2deg)}}

/* ---------- inner page header ---------- */
.page-head{padding:54px 20px 52px;background:var(--mist) url(images/contours.svg) no-repeat right -60px center/520px;border-bottom:1px solid var(--silt)}
.page-head p{margin:14px 0 0}

/* ---------- ruled lists ---------- */
.svc-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 56px}
.svc{display:grid;grid-template-columns:34px 1fr;gap:16px;padding:26px 0;border-top:1px solid var(--silt)}
.svc svg,.row .ico{width:30px;height:30px;fill:none;stroke:var(--tide);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.svc p{margin:0;color:var(--muted);font-size:.97rem}
.more{margin-top:22px;font-weight:600}
.rows{border-top:2px solid var(--ink)}
.row{display:grid;grid-template-columns:minmax(220px,.8fr) 2fr;gap:12px 40px;padding:32px 0;border-bottom:1px solid var(--silt)}
.row h3{display:flex;gap:12px;align-items:flex-start;font-size:1.18rem}
.row .ico{flex:none;margin-top:2px}
.row p{color:var(--muted);max-width:62ch}
.ticks{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:8px}
.ticks li{position:relative;padding-left:26px;font-size:.96rem}
.ticks li::before{content:"";position:absolute;left:2px;top:.45em;width:12px;height:6px;border-left:2px solid var(--leaf-deep);border-bottom:2px solid var(--leaf-deep);transform:rotate(-45deg)}
.group-title{margin:56px 0 18px;font-size:1.5rem}
.group-title:first-child{margin-top:0}

/* who we work with */
.four{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.four>div{padding-top:18px;border-top:4px solid var(--leaf)}
.four>div:nth-child(2){border-color:var(--cyan)}
.four>div:nth-child(3){border-color:var(--tide)}
.four>div:nth-child(4){border-color:var(--ink)}
.four p{color:var(--muted);font-size:.96rem;margin:0}

/* process */
.steps{list-style:none;counter-reset:s;margin:0;padding:0;display:grid;grid-template-columns:repeat(6,1fr);gap:22px}
.steps li{counter-increment:s;position:relative;padding-top:30px;border-top:2px solid var(--silt)}
.steps li::before{content:counter(s);position:absolute;top:-15px;left:0;width:28px;height:28px;border-radius:50%;background:var(--ink);color:#fff;font:600 .85rem/28px var(--sans);text-align:center}
.steps li:last-child::before{background:var(--leaf-deep)}
.steps h3{font-size:1rem}
.steps p{font-size:.92rem;color:var(--muted);margin:0}

/* dark band with photo + ledger */
.dark{background:var(--ink);color:#dcebea}
.dark h2{color:#fff}
.dark .lead,.dark p{color:#b9d0cf}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.photo{margin:0}
.photo img{display:block;width:100%;border-radius:4px;box-shadow:0 18px 40px -18px rgba(0,0,0,.55)}
.photo figcaption{font-size:.86rem;color:#9fbbba;margin-top:10px}
.ledger{margin:26px 0 0;display:grid}
.ledger div{display:grid;grid-template-columns:minmax(120px,.9fr) 1.6fr;gap:16px;padding:13px 0;border-top:1px solid rgba(255,255,255,.18)}
.ledger div:last-child{border-bottom:1px solid rgba(255,255,255,.18)}
.ledger dt{color:#9fbbba;font-size:.92rem}
.ledger dd{margin:0;color:#fff;font-weight:500}
.ledger.light div{border-color:var(--silt)}
.ledger.light dt{color:var(--muted)}
.ledger.light dd{color:var(--ink)}
.dark .btn-row .btn-line{--fg:#fff;--bd:rgba(255,255,255,.55);--sweep:#fff}
.dark .btn-row .btn-line:hover{color:var(--ink)}

/* project / news rows */
.strip{display:grid;grid-template-columns:1fr 1.2fr;gap:0;border:1px solid var(--silt);border-radius:6px;overflow:hidden;background:#fff}
.strip img{width:100%;height:100%;min-height:240px;object-fit:cover;display:block}
.strip>div{padding:34px 36px}
.chip{display:inline-block;font:600 .82rem/1 var(--sans);padding:6px 12px;border-radius:99px;background:var(--tint-cyan);color:#0a566b;margin-bottom:14px}
.chip.done{background:var(--tint-leaf);color:#075f33}
.proj{display:grid;grid-template-columns:200px 1fr;gap:12px 40px;padding:30px 0;border-bottom:1px solid var(--silt)}
.proj:first-child{border-top:2px solid var(--ink)}
.proj p{color:var(--muted);max-width:64ch}
.proj .chip{margin:0}
.proj dl{display:grid;grid-template-columns:auto 1fr;gap:4px 18px;margin:14px 0 0;font-size:.93rem}
.proj dt{color:var(--muted)}.proj dd{margin:0;color:var(--ink)}
.linklist{list-style:none;margin:0;padding:0;border-top:1px solid var(--silt)}
.linklist li{border-bottom:1px solid var(--silt)}
.linklist a{display:flex;justify-content:space-between;gap:20px;padding:18px 0;color:var(--ink);text-decoration:none;font:600 1.05rem/1.4 var(--serif)}
.linklist a:hover{color:var(--tide)}
.linklist span{font:400 .93rem var(--sans);color:var(--muted);max-width:44ch}

/* team */
.team{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.person{padding:24px 0 0;border-top:1px solid var(--silt)}
.avatar{width:84px;height:84px;border-radius:50%;display:grid;place-items:center;background:var(--ink);color:#fff;font:600 1.5rem var(--serif);margin-bottom:16px;box-shadow:0 0 0 4px #fff,0 0 0 5px var(--leaf)}
.person:nth-child(3n+2) .avatar{background:var(--tide);box-shadow:0 0 0 4px #fff,0 0 0 5px var(--cyan)}
.person:nth-child(3n) .avatar{background:var(--leaf-deep);box-shadow:0 0 0 4px #fff,0 0 0 5px var(--leaf)}
.person .role{color:var(--tide);font-weight:600;font-size:.95rem;margin:0 0 4px}
.person p:last-child{color:var(--muted);font-size:.95rem;margin:0}

/* three-column text */
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:36px}
.three h3{font-family:var(--serif);font-size:1.25rem;font-weight:600}
.three p{color:var(--muted);margin:0}

/* insights */
.post{border-top:1px solid var(--silt)}
.post:last-of-type{border-bottom:1px solid var(--silt)}
.post summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:22px 0;font:600 1.18rem/1.35 var(--serif);color:var(--ink)}
.post summary::-webkit-details-marker{display:none}
.post summary::after{content:"";flex:none;width:12px;height:12px;border-right:2px solid var(--tide);border-bottom:2px solid var(--tide);transform:rotate(45deg) translateY(-3px);transition:transform .25s}
.post[open] summary::after{transform:rotate(-135deg) translate(-2px,-2px)}
.post .body{padding:0 0 26px;max-width:66ch;animation:open .35s ease}
.post .body p{color:var(--muted)}
@keyframes open{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* cta */
.cta{background:var(--tint-leaf);padding:72px 20px}
.cta-in{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.cta p{margin:10px 0 0;color:var(--muted);max-width:52ch}
.cta .btn-row{margin:0}

/* contact */
.contact{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:start}
.contact address{font-style:normal}
.contact .item{padding:16px 0;border-top:1px solid var(--silt)}
.contact .item:last-of-type{border-bottom:1px solid var(--silt)}
.contact .item b{display:block;color:var(--ink);font-weight:650;font-size:.95rem;margin-bottom:2px}
.socials{display:flex;gap:10px;margin-top:6px}
.socials a{width:44px;height:44px;border:1px solid var(--silt);border-radius:6px;display:grid;place-items:center;color:var(--ink);transition:background .2s,color .2s,border-color .2s}
.socials a:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.socials svg{width:20px;height:20px;fill:currentColor}
.map{margin-top:26px;border:1px solid var(--silt);border-radius:6px;overflow:hidden;line-height:0}
.map iframe{width:100%;height:280px;border:0}
form{display:grid;gap:16px;background:var(--mist);padding:30px;border-radius:6px;border:1px solid var(--silt)}
.field{display:grid;gap:6px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{font-weight:600;font-size:.9rem;color:var(--ink)}
label small{font-weight:400;color:var(--muted)}
input,select,textarea{width:100%;padding:12px 14px;border:1px solid #b9cfcd;border-radius:6px;background:#fff;color:var(--text);font:inherit;font-size:.98rem}
input:focus,select:focus,textarea:focus{outline:3px solid rgba(14,106,130,.28);border-color:var(--tide)}
textarea{min-height:140px;resize:vertical}
.hp{position:absolute;left:-9999px}
.form-status{min-height:1.4em;font-size:.95rem;margin:0}
.form-status.ok{color:var(--leaf-deep)}.form-status.err{color:#a3261f}

/* legal text */
.prose{max-width:70ch}
.prose h2{font-size:1.4rem;margin:34px 0 8px}
.prose p,.prose li{color:var(--muted)}

/* footer */
footer{background:var(--ink);color:#b9d0cf;padding:60px 20px 26px;font-size:.94rem}
footer a{color:#dcebea;text-decoration:none}
footer a:hover{color:var(--cyan);text-decoration:underline}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
footer h3{color:#fff;font-size:1rem;margin-bottom:12px}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
footer .brand-box{display:inline-flex;background:#fff;border-radius:6px;padding:6px 12px;margin-bottom:16px}
footer .brand-box img{height:40px;width:auto;display:block}
footer .socials a{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
footer .socials a:hover{background:#fff;color:var(--ink);border-color:#fff}
.foot-base{margin-top:42px;padding-top:20px;border-top:1px solid rgba(255,255,255,.16);display:flex;flex-wrap:wrap;gap:10px 28px;justify-content:space-between;font-size:.86rem;color:#9fbbba}
.foot-base span+span{display:inline}

/* floating whatsapp */
.wa{position:fixed;right:18px;bottom:18px;z-index:40;width:54px;height:54px;border-radius:50%;background:var(--leaf-deep);color:#fff;display:grid;place-items:center;box-shadow:0 10px 24px -8px rgba(0,0,0,.5);transition:transform .2s,background .2s}
.wa:hover{background:var(--ink);transform:translateY(-2px);color:#fff}
.wa svg{width:28px;height:28px;fill:#fff}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .steps{grid-template-columns:repeat(3,1fr);row-gap:40px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .four{grid-template-columns:1fr 1fr}
}
@media (max-width:960px){
  .nav-toggle{display:block}
  .menu{position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--silt);flex-direction:column;align-items:stretch;gap:0;padding:6px 20px 18px;
    box-shadow:0 20px 30px -20px rgba(11,44,56,.35);opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .2s,transform .25s,visibility .25s}
  .menu.open{opacity:1;visibility:visible;transform:none}
  .menu li{border-bottom:1px solid var(--silt)}
  .menu li:last-child{border:0;padding-top:14px}
  .menu a:not(.btn){display:block;padding:14px 0;background:none}
  .menu a[aria-current]:not(.btn){color:var(--tide)}
  .nav{position:relative}
}
@media (max-width:860px){
  section{padding:60px 20px}
  .hero{padding:28px 20px 56px}
  .hero-grid,.split,.contact,.strip{grid-template-columns:1fr}
  .emblem{max-width:400px;margin:0 auto;order:-1}
  .svc-grid{grid-template-columns:1fr;gap:0}
  .row,.proj{grid-template-columns:1fr}
  .three,.team{grid-template-columns:1fr}
  .strip img{min-height:200px;max-height:260px}
  .page-head{background-size:380px;background-position:right -120px bottom -40px}
  .tb-left a:nth-child(2){display:none}
}
@media (max-width:560px){
  .steps{grid-template-columns:1fr 1fr}
  .four,.foot-grid,.two{grid-template-columns:1fr}
  .btn-row .btn{width:100%}
  .strip>div{padding:26px 22px}
  form{padding:22px}
  .brand img{height:40px}
  .ledger div{grid-template-columns:1fr;gap:2px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .js .contours path{stroke-dashoffset:0}
  .js .emblem img{opacity:1}
  .rip{display:none}
}

/* photos */
.wide{margin:0 0 8px}
.wide img{width:100%;height:340px;object-fit:cover;display:block;border-radius:4px}
.wide figcaption{font-size:.88rem;color:var(--muted);margin-top:8px}
.mosaic{display:grid;grid-template-columns:1.4fr 1fr 1fr;grid-template-rows:230px 230px;gap:12px}
.mosaic figure{margin:0;overflow:hidden;border-radius:4px;background:var(--silt)}
.mosaic img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s ease}
.mosaic figure:hover img{transform:scale(1.04)}
.mosaic .big{grid-row:span 2}
.mosaic .wd{grid-column:span 2}
.avatar-img{width:84px;height:84px;border-radius:50%;object-fit:cover;object-position:50% 25%;display:block;margin-bottom:16px;box-shadow:0 0 0 4px #fff,0 0 0 5px var(--leaf)}
@media (max-width:860px){.mosaic{grid-template-columns:1fr 1fr;grid-template-rows:200px 160px 160px}.mosaic .big{grid-column:span 2;grid-row:auto}.mosaic .wd{grid-column:span 2}.wide img{height:240px}}