/* Plain, industrial look: square corners, solid panels, real-looking photos. Dark forest sections alternate with light paper ones. */
:root{
  --forest:#061a18; --forest-2:#0b2723; --forest-3:#113630; --forest-deep:#041311;
  --green:#30a66a; --leaf:#8bbd40; --amber:#e08a24; --amber-soft:#f3d484;
  --paper:#f3f5ee; --paper-2:#e6ebdd; --ink:#0c2823; --ink-2:#4b6058; --green-text:#2f7d4a;
  --on-dark:#ffffff; --on-dark-2:#a9c2b8; --line-dark:rgba(255,255,255,.14); --line-light:rgba(12,40,35,.16);
  --radius:4px;
  --f-display:'Montserrat',system-ui,sans-serif; --f-body:'Public Sans',system-ui,sans-serif;
  /* per-section colours; light sections override these */
  --muted:var(--on-dark-2); --line:var(--line-dark); --accent:var(--leaf);
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
[id]{scroll-margin-top:72px}
body{margin:0;background:var(--forest);color:var(--on-dark);font:400 16px/1.6 var(--f-body);padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);background:var(--forest);z-index:30}
a{color:inherit}
:focus-visible{outline:2px solid var(--leaf);outline-offset:3px}
h1,h2,h3,h4{font-family:var(--f-display);margin:0;text-wrap:balance;letter-spacing:-.01em}
h2{font-size:clamp(28px,3.2vw,40px);line-height:1.15;font-weight:700;margin-bottom:16px}
h3{font-size:19px;font-weight:700;line-height:1.3}
.wrap{max-width:1160px;margin:0 auto;width:100%}
.band{margin-left:calc(-1*max(16px,env(safe-area-inset-left,0px)));margin-right:calc(-1*max(16px,env(safe-area-inset-right,0px)));padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.light,.light2{color:var(--ink);--muted:var(--ink-2);--line:var(--line-light);--accent:var(--green-text)}
.light{background:var(--paper)}
.light2{background:var(--paper-2)}
section{padding-block:80px}
.lead{font-size:18px}
p{margin:0 0 14px}

/* top bar and nav */
.topbar{background:var(--forest-deep);font-size:13px;color:var(--on-dark-2)}
.topbar .wrap{display:flex;justify-content:flex-end;gap:24px;padding-block:8px}
.topbar .addr{margin-right:auto}
.topbar a{text-decoration:none}
.topbar a:hover{color:#fff}
header{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--forest);border-bottom:1px solid var(--line-dark);transition:box-shadow .25s}
header.scrolled{box-shadow:0 4px 16px rgba(0,0,0,.28)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px}
.nav img{height:48px;width:auto;display:block}
.nav ul{display:flex;gap:26px;list-style:none;margin:0;padding:0;font:500 15px var(--f-body)}
.nav ul a{text-decoration:none;color:var(--on-dark-2)}
.nav ul a:hover{color:#fff}
.menu{display:none;flex:none;width:44px;height:44px;border:1.5px solid rgba(255,255,255,.35);border-radius:var(--radius);background:transparent;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.menu span{display:block;width:18px;height:2px;background:#fff;transition:transform .2s,opacity .2s}
.nav.open .menu span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav.open .menu span:nth-child(2){opacity:0}
.nav.open .menu span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;font:600 15px var(--f-body);text-decoration:none;padding:12px 22px;border-radius:var(--radius);border:1.5px solid transparent;cursor:pointer;background:var(--leaf);color:#0a2217;transition:background .15s,border-color .15s}
.btn:hover{background:#9bcd4f}
.btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn.ghost:hover{border-color:#fff}
.btn.dark{background:var(--ink);color:#fff}
.btn.dark:hover{background:#17423a}
.btn.ghost-dark{background:transparent;color:var(--ink);border-color:var(--line-light)}
.btn.ghost-dark:hover{border-color:var(--ink)}
.btn:disabled{opacity:.75;cursor:progress}
.btn.loading::before{content:"";width:14px;height:14px;margin-right:10px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.cta{display:flex;flex-wrap:wrap;gap:12px}

/* hero: full-width photo with a solid text card in the lower left, then a strip of key facts */
.hero{position:relative;min-height:clamp(500px,66vh,640px);display:flex}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:60% 60%}
.hero .wrap{position:relative;display:flex;align-items:flex-end;padding-block:56px}
.hero-card{background:var(--forest);max-width:560px;padding:36px 40px 40px;border-top:4px solid var(--leaf)}
.hero h1{font-size:clamp(32px,3.6vw,46px);line-height:1.1;font-weight:700;margin-bottom:16px}
.hero .lead{color:var(--on-dark-2);font-size:17px;margin-bottom:26px}
.hero-facts{background:var(--forest-2);border-bottom:1px solid var(--line-dark)}
.hero-facts dl{display:grid;grid-template-columns:repeat(4,1fr);margin:0}
.hero-facts dl div{padding:22px 24px 24px;border-left:1px solid var(--line-dark)}
.hero-facts dl div:first-child{border-left:0;padding-left:0}
.hero-facts dt{font:700 16px var(--f-display);color:#fff;margin-bottom:4px}
.hero-facts dd{margin:0;font-size:14px;color:var(--on-dark-2)}

/* section heads */
.sec-head{max-width:720px;margin-bottom:40px}
.sec-head p{color:var(--muted);font-size:17px;margin:0}

/* fuel spec table */
.spec{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line)}
.spec th{font:600 14px var(--f-body);text-align:left;color:var(--muted);padding:12px 16px;background:var(--paper-2);border-bottom:1px solid var(--line)}
.spec td{padding:16px;border-bottom:1px solid var(--line);vertical-align:top}
.spec tr:last-child td{border-bottom:0}
.spec tbody tr{transition:background-color .15s}
@media (hover:hover){.spec tbody tr:hover{background:#f6f9f1}}
.spec .num{white-space:nowrap;font-variant-numeric:tabular-nums;padding-top:20px}
.fuel{display:flex;gap:18px;align-items:flex-start}
.fuel img{flex:none;width:136px;height:102px;object-fit:cover;border-radius:2px;background:var(--paper-2)}
.fuel b{display:block;font:700 17px var(--f-display);margin:2px 0 4px}
.fuel p{margin:0;font-size:15px;color:var(--muted);max-width:46ch}
.footnote{margin:16px 0 0;font-size:14px;color:var(--muted)}
/* GCV range bar: one shared 3,000–5,000 kcal/kg scale, --a and --b are the range ends as fractions */
.range{display:block;position:relative;height:6px;width:100%;max-width:150px;margin-top:8px;background:var(--paper-2);border-radius:3px}
.range i{position:absolute;top:0;bottom:0;left:calc(var(--a)*100%);right:calc((1 - var(--b))*100%);background:var(--green-text);border-radius:3px}

/* supply and export map: SVG artwork with HTML labels so text stays readable at any width */
.map{margin:0 0 40px}
.map-frame{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius)}
.map-frame img{display:block;width:100%;height:auto}
.lbl{position:absolute;transform:translate(-50%,-50%);font-size:13px;font-weight:600;line-height:1.3;color:#fff;background:rgba(11,39,35,.88);padding:2px 7px;border-radius:2px;white-space:nowrap;pointer-events:none}
.lbl.right{transform:translate(12px,-120%)}
.lbl.left{transform:translate(-50%,12px)}
.lbl.end{transform:translate(-100%,22px)}
.lbl.country{background:none;color:rgba(255,255,255,.5);font-weight:500}
.legend{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px 24px;font-size:14px;color:var(--muted)}
.legend li{display:flex;align-items:center;gap:8px}
.sw{display:inline-block;flex:none;width:18px;height:12px}
.sw.solid{background:#30a66a}
.sw.hatch{background:repeating-linear-gradient(45deg,#30a66a 0 3px,#1d5a40 3px 7px)}
.sw.route{width:22px;height:0;border-top:2.5px dashed #8bbd40}
.sw.dot{width:12px;height:12px;border-radius:50%}
.sw.office{background:#f3d484}
.sw.port{background:#fff}

/* supply steps */
.split{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start}
.steps{list-style:none;margin:0;padding:0;counter-reset:step}
.steps li{display:grid;grid-template-columns:52px 1fr;column-gap:16px;padding:22px 0;border-top:1px solid var(--line)}
.steps li:last-child{border-bottom:1px solid var(--line)}
.steps li::before{counter-increment:step;content:counter(step);grid-row:span 2;font:700 32px/1 var(--f-display);color:var(--accent)}
.steps h3{margin-bottom:4px}
.steps p{margin:0;color:var(--muted)}

/* delivery */
.split-photo{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.photo,.wide{margin:0}
.photo img{display:block;width:100%;height:auto;border-radius:var(--radius)}
.wide{margin-bottom:40px}
.wide img{display:block;width:100%;height:clamp(200px,30vw,380px);object-fit:cover;border-radius:var(--radius)}
.plain{width:100%;border-collapse:collapse;font-size:15px}
.plain th,.plain td{text-align:left;padding:14px 12px 14px 0;border-bottom:1px solid var(--line);vertical-align:top}
.plain thead th{font-size:14px;font-weight:600;color:var(--muted);padding-top:0}
.plain tbody th{font-weight:600}
.facts{display:grid;grid-template-columns:repeat(4,1fr);margin:48px 0 0;border-top:1px solid var(--line)}
.facts div{padding:20px 24px 0 0;min-width:0}
.facts dt{font-size:14px;font-weight:600;color:var(--muted);margin-bottom:4px}
.facts dd{margin:0}

/* label/value rows (export, about, contact) */
.rows{display:grid;margin:0}
.rows div{display:flex;gap:20px;padding:14px 0;border-top:1px solid var(--line)}
.rows div:last-child{border-bottom:1px solid var(--line)}
.rows dt{flex:none;width:150px;font-weight:600}
.rows dd{margin:0;color:var(--muted)}
.rows a{text-underline-offset:3px}
.rows a:hover{color:#fff}
.cols2{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cols2 h3{margin-bottom:12px}
.ticks{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.ticks li{position:relative;padding-left:22px}
.ticks li::before{content:"";position:absolute;left:2px;top:.6em;width:8px;height:8px;background:var(--green)}
.note{margin:18px 0 0;font-size:14px;color:var(--muted)}

/* estimator */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line)}
.panel{padding:32px;min-width:0}
.panel.in{background:#fff}
.panel.out{background:var(--ink);color:#fff;display:flex;flex-direction:column;justify-content:space-between;gap:24px}
label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}
.field{margin-bottom:20px}
.field small{display:block;color:var(--ink-2);font-size:13px;margin-top:6px}
input,select,textarea{width:100%;font:400 16px var(--f-body);padding:11px 12px;border-radius:var(--radius);border:1px solid #b9c4bd;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--green);outline-offset:0;border-color:var(--green)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.big{font:700 clamp(44px,6vw,68px)/1 var(--f-display);color:var(--leaf);font-variant-numeric:tabular-nums}
.big-unit{font-size:.35em;font-weight:600}
.out .unit{font-size:14px;font-weight:600;color:var(--on-dark-2);margin-bottom:8px}
.out p{margin:0;color:var(--on-dark-2);font-size:14px}
.out .stats{display:flex;gap:32px;flex-wrap:wrap}
/* coal vs biomass: two bars on one scale, labelled in text so colour is not the only cue */
.cmp{display:grid;gap:10px}
.cmp-row{display:grid;grid-template-columns:118px 1fr 70px;align-items:center;gap:12px;font-size:13px;color:var(--on-dark-2)}
.cmp-track{height:12px}
.cmp-track i{display:block;width:0;height:100%;border-radius:0 4px 4px 0;transition:width .45s ease-out}
.cmp .coal{background:#5f86c9}
.cmp .bio{background:#30a66a}
.cmp-val{text-align:right;color:#fff;font-variant-numeric:tabular-nums;white-space:nowrap}
.out .stats b{display:block;font:700 24px var(--f-display);font-variant-numeric:tabular-nums}
.out .stats span{font-size:13px;color:var(--on-dark-2)}

/* about */
#about .lead{color:#fff}
#about p{color:var(--on-dark-2);max-width:60ch}
#sustainability p{color:var(--muted);max-width:56ch}

/* faq */
.narrow{max-width:820px}
.faq{margin-top:24px}
.faq details{border-top:1px solid var(--line)}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:24px;padding:18px 0;font:600 17px/1.4 var(--f-display)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:none;font:400 24px/1 var(--f-body);color:var(--accent)}
.faq details[open] summary::after{content:"\2212"}
.faq details p{margin:0 0 20px;color:var(--muted);max-width:66ch}
.faq a,.faq-more a{color:var(--green-text);text-underline-offset:3px}
.faq-more{margin:24px 0 0;color:var(--muted)}

/* quote */
.quote{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start}
.quote .lead{color:var(--on-dark-2);margin-bottom:28px;max-width:44ch}
form.card{background:#fff;color:var(--ink);border-radius:var(--radius);padding:32px;min-width:0}
form.card textarea{min-height:96px;resize:vertical}
#sent{display:none;margin-top:20px;background:var(--paper);border-radius:var(--radius);padding:18px;font-size:14px}
#sent pre{white-space:pre-wrap;font:400 13px/1.6 ui-monospace,Consolas,monospace;margin:10px 0 14px;color:var(--ink)}
#sent.show{display:block;animation:rise .25s ease-out}
@keyframes rise{from{opacity:0;transform:translateY(4px)}}
#sent p{margin:6px 0 0;color:var(--ink-2)}
#sent.ok{background:rgba(48,166,106,.12)}
#sent.ok pre,#sent.ok .cta{display:none}
#sent.err{background:rgba(224,138,36,.14)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
[aria-invalid="true"]{border-color:#c2410c}
.fine{font-size:13px;color:var(--ink-2);margin:14px 0 0}

/* placeholders for details still to supply; search the HTML for "tbc" */
.tbc{font-size:.9em;color:#8a4a0c;background:rgba(224,138,36,.12);border:1px dashed var(--amber);border-radius:var(--radius);padding:1px 6px}

/* footer */
footer{background:var(--forest-deep);color:var(--on-dark-2);font-size:14px;padding-block:56px 28px}
.foot{display:grid;grid-template-columns:1.4fr 1.2fr 1fr;gap:40px}
.foot img{height:40px;width:auto;display:block;margin-bottom:14px}
.foot p{max-width:36ch}
.foot h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:12px}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.foot a{text-decoration:none}
.foot a:hover{color:#fff}
.legal{border-top:1px solid var(--line-dark);margin:40px 0 0;padding-top:20px;font-size:13px}

@media (max-width:980px){
  .facts{grid-template-columns:repeat(2,1fr)}
  .nav{gap:10px}
  .nav .btn{margin-left:auto}
  .menu{display:flex}
  /* the menu is always laid out and revealed top-down with clip-path, so it can slide */
  .nav ul{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:0;padding:4px max(16px,env(safe-area-inset-right,0px)) 12px max(16px,env(safe-area-inset-left,0px));background:var(--forest);border-bottom:1px solid var(--line-dark);font-size:16px;visibility:hidden;clip-path:inset(0 0 100% 0);transition:clip-path .25s ease-out,visibility 0s .25s}
  .nav.open ul{visibility:visible;clip-path:inset(0 0 -20px 0);transition:clip-path .25s ease-out;box-shadow:0 8px 16px rgba(0,0,0,.25)}
  .nav ul a{display:block;padding:14px 0;border-top:1px solid var(--line-dark)}
  .nav ul li:first-child a{border-top:0}
  .split{gap:40px}
}
@media (max-width:820px){
  section{padding-block:60px}
  /* phones and small tablets: photo on top, the card becomes plain text below it */
  .hero{min-height:0;flex-direction:column}
  .hero-bg{position:static;height:auto;aspect-ratio:16/9;margin:0 calc(-1*max(16px,env(safe-area-inset-right,0px))) 0 calc(-1*max(16px,env(safe-area-inset-left,0px)));width:calc(100% + 2*max(16px,env(safe-area-inset-left,0px)))}
  .hero .wrap{padding-block:0}
  .hero-card{max-width:none;padding:32px 0 36px;border-top:0}
  .hero-facts dl{grid-template-columns:1fr 1fr}
  .hero-facts dl div{padding:18px 16px 18px 0;border-left:0;border-top:1px solid var(--line-dark)}
  .hero-facts dl div:nth-child(-n+2){border-top:0}
  .split,.split-photo,.cols2,.calc,.quote{grid-template-columns:1fr;gap:32px}
  .calc{gap:0}
  .foot{grid-template-columns:1fr 1fr}
  .foot > div:first-child{grid-column:1/-1}
}
@media (max-width:720px){
  .spec thead{display:none}
  .spec,.spec tbody,.spec tr,.spec td{display:block}
  .spec tr{padding:16px;border-bottom:1px solid var(--line)}
  .spec tr:last-child{border-bottom:0}
  .spec td{padding:0;border:0}
  .spec .num{display:flex;justify-content:space-between;gap:16px;padding:8px 0 0;margin-top:8px;border-top:1px solid var(--line);white-space:normal}
  .spec .num::before{content:attr(data-label);color:var(--muted)}
  .fuel{margin-bottom:6px}
  .spec .num.gcv{flex-wrap:wrap;row-gap:6px}
  .spec .gcv .range{flex-basis:100%;max-width:none;margin-top:0}
  .lbl{font-size:11px;padding:1px 5px}
  .lbl.country,.lbl.area{display:none}
  .fuel img{width:104px;height:78px}
}
@media (max-width:560px){
  .two,.facts{grid-template-columns:1fr}
  .hero .cta .btn{flex:1 1 100%}
  .rows div{flex-direction:column;gap:2px}
  .panel,form.card{padding:22px}
  .nav img{height:42px}
  .nav .btn{padding:10px 14px;font-size:14px}
  .topbar .addr{display:none}
  .topbar .wrap{justify-content:space-between;gap:12px}
  .foot{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,::before,::after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}
}