/* Green Science tab.
   Loaded only by green-science.html. Every custom property is prefixed --gs-
   so that nothing here can ever override css/styles.css, which uses the same
   unprefixed names (--blue, --ink, --line and the rest) with cerulean values.
   Green #3AB54A and near-black #231F20 are taken from the Green Science
   wordmark; the type is Barlow and Roboto. This is deliberately a different
   identity from the GreaseOff pages. */

/* Layout: anchor grid at the top, deep stacked sections below, each carrying
   its own downloads block. Photography is Green Science's own: rigs, sumps,
   booms, kits, packs. */
:root{
  --gs-white:#ffffff;
  --gs-paper:#F7F9F7;
  --gs-paper2:#EDF2ED;
  --gs-blue:#3AB54A;
  --gs-blued:#2A8F39;
  --gs-ink:#231F20;
  --gs-sun:#8D9A8D;
  --gs-sun-soft:#C2D2C2;
  --gs-wash:#EDF5EE;
  --gs-mut:#6B726B;
  --gs-line:#E3E7E3;
  --gs-sh:0 10px 30px rgba(22,40,22,.07),0 2px 8px rgba(22,40,22,.05);
  --gs-sh-h:0 22px 52px rgba(22,40,22,.15),0 4px 14px rgba(22,40,22,.08);
  --gs-icotile:linear-gradient(160deg,#EDF6EE,#CFE6D2);
  --gs-icosh:inset 0 1px 0 #fff,0 6px 14px rgba(58,181,74,.18);
}
*{margin:0;padding:0;box-sizing:border-box}
.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none}
.brand .mark{flex:0 0 auto;height:44px;width:auto;object-fit:contain}
.brand b{color:var(--gs-blue);font-weight:800}
footer .brand .mark{filter:drop-shadow(0 3px 10px rgba(0,0,0,.45))}

html{scroll-behavior:smooth}
body{font-family:'Roboto',sans-serif;background:var(--gs-white);color:var(--gs-ink);-webkit-font-smoothing:antialiased}
.wrap{max-width:1200px;margin:0 auto;padding:0 36px}
.cormo{font-family:'Barlow',sans-serif}
img{max-width:100%;display:block}
a{color:inherit}
.ic{width:22px;height:22px;stroke:currentColor;stroke-width:1.6;fill:none;stroke-linecap:round;stroke-linejoin:round}

nav{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(255,255,255,.78);backdrop-filter:blur(14px);border-bottom:1px solid var(--gs-line)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:76px;position:relative}
.brand{font-family:'Barlow';font-weight:700;font-size:1.7rem;letter-spacing:.02em;color:var(--gs-ink)}
.brand b{color:var(--gs-blue);font-weight:700}
.navlinks{display:flex;gap:30px;font-size:.86rem;font-weight:400;color:var(--gs-mut);letter-spacing:.02em;position:absolute;left:50%;transform:translateX(-50%)}
.navlinks a{color:inherit;text-decoration:none}
.navlinks a:hover{color:var(--gs-blue)}
.navlinks a.on,.navlinks a.active{color:var(--gs-ink);font-weight:700}
@media(max-width:780px){.navlinks{display:none}} /* matches css/styles.css */

/* industrial hero */
.hero{position:relative;min-height:66vh;display:flex;align-items:flex-end;overflow:hidden}
.hero .bg{position:absolute;inset:0}
.hero .bg img{height:100%;width:100%;object-fit:cover;object-position:center 42%;filter:brightness(.66) saturate(1.03) contrast(1.03)}
.hero .bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(24,38,24,.42),rgba(24,38,24,.2) 42%,rgba(24,38,24,.52) 78%),linear-gradient(180deg,rgba(246,251,254,0) 90%,rgba(246,251,254,.55))}
.hero .wrap{position:relative;z-index:3;padding-top:120px;padding-bottom:76px}
.hero .crumb{font-size:.76rem;letter-spacing:.24em;text-transform:uppercase;color:rgba(255,255,255,.86);font-weight:700;margin-bottom:20px;text-shadow:0 2px 14px rgba(10,18,10,.5)}
.hero h1{font-family:'Barlow';font-weight:700;letter-spacing:-.02em;font-size:clamp(2.4rem,6.4vw,5rem);line-height:1;max-width:17ch;color:#fff;text-shadow:0 2px 28px rgba(10,18,10,.5),0 1px 5px rgba(10,18,10,.35)}
.hero h1 i{font-style:normal;color:#8FE39C}
.hero .lede{margin-top:22px;font-weight:500;font-size:1.06rem;line-height:1.65;color:rgba(255,255,255,.92);max-width:54ch;text-shadow:0 1px 14px rgba(10,18,10,.55)}
.credit{position:absolute;right:18px;bottom:14px;z-index:4;font-size:.66rem;letter-spacing:.11em;text-transform:uppercase;color:rgba(255,255,255,.55)}

/* stat strip overlapping the hero */
.statband{margin-top:-52px;position:relative;z-index:5}
.statband .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--gs-line);border:1px solid var(--gs-line);border-radius:10px;overflow:hidden;box-shadow:var(--gs-sh-h)}
.statband .c{background:linear-gradient(180deg,#fff,#FAFCFA);padding:30px 24px;text-align:center}
.statband .n{font-family:'Barlow';font-weight:700;letter-spacing:-.015em;font-size:2.4rem;color:var(--gs-blue);line-height:1}
.statband .l{margin-top:7px;font-size:.74rem;letter-spacing:.09em;text-transform:uppercase;color:var(--gs-mut)}
@media(max-width:760px){.statband .wrap{grid-template-columns:1fr 1fr}}

/* anchor index grid, photo led */
.shead{margin-bottom:42px}
.shead .e{font-size:.78rem;letter-spacing:.28em;text-transform:uppercase;color:var(--gs-blued);font-weight:600}
.shead h2{font-family:'Barlow';font-weight:700;letter-spacing:-.02em;font-size:clamp(2rem,4.4vw,3.2rem);margin-top:10px}
.shead p{margin-top:14px;color:var(--gs-mut);line-height:1.7;max-width:58ch}
.idx{padding:96px 0 0}
.idxgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tile{display:block;text-decoration:none;border:1px solid var(--gs-line);border-radius:16px;overflow:hidden;background:#fff;box-shadow:var(--gs-sh);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.tile:hover{transform:translateY(-3px);box-shadow:var(--gs-sh-h);border-color:var(--gs-blue)}
.tile .ph{height:132px;overflow:hidden;border-bottom:1px solid var(--gs-line);background:var(--gs-wash)}
.tile .ph img{height:100%;width:100%;object-fit:cover;transition:transform .5s ease}
.tile:hover .ph img{transform:scale(1.05)}
.tile .tx{padding:18px 20px 20px}
.tile h3{font-family:'Barlow';font-weight:700;letter-spacing:-.015em;font-size:1.3rem;line-height:1.15}
.tile p{margin-top:7px;color:var(--gs-mut);font-size:.87rem;line-height:1.55}
.tile .go{margin-top:14px;font-size:.71rem;letter-spacing:.13em;text-transform:uppercase;color:var(--gs-blue);font-weight:700;display:flex;align-items:center;gap:6px}
.tile .go .ic{width:14px;height:14px}
@media(max-width:1000px){.idxgrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.idxgrid{grid-template-columns:1fr}}

/* deep sections */
.deep{padding:100px 0 0}
.rec{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;padding:66px 0;border-top:1px solid var(--gs-line)}
.rec:first-child{border-top:none;padding-top:0}
.rec.flip .media{order:-1}
.rec .num{font-family:'Barlow';font-size:.95rem;letter-spacing:.22em;color:var(--gs-sun);font-weight:600}
.rec h2{font-family:'Barlow';font-weight:700;letter-spacing:-.02em;font-size:clamp(1.9rem,3.6vw,2.8rem);line-height:1.08;margin-top:8px}
.rec .role{margin-top:10px;font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gs-blued);font-weight:700}
.rec p{margin-top:18px;color:var(--gs-mut);line-height:1.75;max-width:50ch}
.media{border-radius:18px;overflow:hidden;border:1px solid var(--gs-line);box-shadow:var(--gs-sh);position:relative;background:var(--gs-wash)}
.media img{height:420px;width:100%;object-fit:cover}
.media .cap{position:absolute;bottom:16px;left:16px;background:rgba(255,255,255,.88);backdrop-filter:blur(10px);border:1px solid var(--gs-line);border-radius:11px;padding:10px 16px;font-size:.74rem;letter-spacing:.09em;text-transform:uppercase;color:var(--gs-blued);font-weight:700}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.pair .media img{height:300px}

/* downloads block */
.dl{margin-top:26px;border:1px solid var(--gs-line);border-radius:16px;overflow:hidden;background:#fff;box-shadow:var(--gs-sh)}
.dl .dh{padding:13px 20px;background:linear-gradient(180deg,#F0F7F1,#DFEDE1);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gs-blued);font-weight:700;border-bottom:1px solid var(--gs-line)}
.dl a{display:flex;align-items:center;gap:14px;padding:14px 20px;text-decoration:none;border-bottom:1px solid var(--gs-line);transition:background .16s ease}
.dl a:last-child{border-bottom:none}
.dl a:hover{background:#F6FAF7}
.dl .pdf{flex:0 0 34px;height:34px;border-radius:10px;background:var(--gs-icotile);color:var(--gs-blued);display:flex;align-items:center;justify-content:center;box-shadow:var(--gs-icosh);font-size:.62rem;font-weight:700;letter-spacing:.04em}
.dl .nm{flex:1;font-weight:600;font-size:.93rem}
.dl .act{font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--gs-blue);font-weight:700;white-space:nowrap}

/* spec + chips */
.kv{margin-top:24px;border:1px solid var(--gs-line);border-radius:16px;overflow:hidden;background:linear-gradient(180deg,#F0F7F1,#DFEDE1);padding:8px 22px}
.kv .r{display:flex;justify-content:space-between;align-items:baseline;gap:18px;padding:11px 0;border-bottom:1px solid rgba(42,143,57,.14)}
.kv .r:last-child{border-bottom:none}
.kv .k2{color:var(--gs-mut);font-size:.89rem;font-weight:500}
.kv .v{font-weight:700;font-size:.92rem;text-align:right}
.kv .v.hl{color:var(--gs-blue)}
.chipwrap{margin-top:26px}
.chipwrap .lbl{font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gs-blued);font-weight:700;margin-bottom:14px}
.chipgrid{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid var(--gs-line);background:linear-gradient(180deg,#fff,#FAFCFA);border-radius:40px;padding:8px 15px;font-size:.82rem;font-weight:500;color:var(--gs-ink);box-shadow:0 3px 8px rgba(22,40,22,.05);transition:border-color .16s ease,transform .16s ease}
.chip:hover{border-color:var(--gs-blue);transform:translateY(-1px)}
@media(max-width:920px){.rec{grid-template-columns:1fr;gap:32px}.rec.flip .media{order:0}.media img{height:300px}.pair .media img{height:240px}}

/* other products, compact tier */
.other{padding:96px 0 0}
.othergrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:8px}
.ocard{border:1px solid var(--gs-line);border-radius:18px;overflow:hidden;background:#fff;box-shadow:var(--gs-sh);transition:border-color .18s ease,box-shadow .18s ease}
.ocard:hover{border-color:var(--gs-blue);box-shadow:var(--gs-sh-h)}
.ocard .ph{height:200px;overflow:hidden;border-bottom:1px solid var(--gs-line);background:var(--gs-wash)}
.ocard .ph img{height:100%;width:100%;object-fit:cover}
.ocard .tx{padding:24px}
.ocard h3{font-family:'Barlow';font-weight:700;letter-spacing:-.015em;font-size:1.4rem}
.ocard p{margin-top:9px;color:var(--gs-mut);font-size:.9rem;line-height:1.65}
.ocard a{display:inline-flex;align-items:center;gap:7px;margin-top:16px;font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--gs-blue);font-weight:700;text-decoration:none}
@media(max-width:920px){.othergrid{grid-template-columns:1fr}}


/* cross-link to the GreaseOff product page */
.xlink{padding:96px 0 0}
.xin{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;border:1px solid var(--gs-line);border-radius:20px;background:linear-gradient(150deg,#F0F7F1,#DFEDE1);box-shadow:var(--gs-sh),inset 0 1px 0 rgba(255,255,255,.8);padding:36px 40px}
.xin .e{font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gs-blued);font-weight:700}
.xin h2{font-family:'Barlow';font-weight:700;letter-spacing:-.02em;font-size:clamp(1.7rem,3.4vw,2.5rem);line-height:1.08;margin-top:10px}
.xin p{margin-top:12px;color:var(--gs-mut);line-height:1.7;max-width:52ch}


/* named-only tier */
.listed{padding:96px 0 0}
.lgrid2{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.litem{display:flex;align-items:center;justify-content:space-between;gap:14px;border:1px solid var(--gs-line);border-radius:14px;background:linear-gradient(180deg,#fff,#FAFCFA);box-shadow:var(--gs-sh);padding:18px 22px;transition:border-color .16s ease,transform .16s ease}
.litem:hover{border-color:var(--gs-blue);transform:translateY(-2px)}
.litem .nm{font-family:'Barlow';font-weight:700;font-size:1.05rem;letter-spacing:-.01em}
.litem a{font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--gs-blue);font-weight:700;text-decoration:none;white-space:nowrap}
@media(max-width:900px){.lgrid2{grid-template-columns:1fr}}

/* CTA band */
.btn{padding:14px 28px;border-radius:12px;font-size:.88rem;letter-spacing:.03em;text-decoration:none;display:inline-flex;align-items:center;gap:9px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease}
.cta{margin-top:106px;background:linear-gradient(150deg,#3AB54A,#2A8F39 70%);position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(70% 130% at 12% -20%,rgba(255,255,255,.28),rgba(255,255,255,0) 60%);pointer-events:none}
.cta .wrap{position:relative;z-index:1;padding:78px 36px;text-align:center;color:#fff}
.cta h2{font-family:'Barlow';font-weight:700;letter-spacing:-.02em;font-size:clamp(2rem,4.4vw,3.2rem);line-height:1.1;max-width:22ch;margin:0 auto}
.cta p{margin-top:18px;color:rgba(255,255,255,.86);line-height:1.7;max-width:52ch;margin-left:auto;margin-right:auto}
.ctabtns{display:flex;gap:12px;justify-content:center;margin-top:32px;flex-wrap:wrap}
.btn-w{background:#fff;color:var(--gs-blued);font-weight:600;box-shadow:0 10px 24px rgba(12,22,12,.24)}
.btn-w:hover{transform:translateY(-2px)}
.btn-gh{border:1px solid rgba(255,255,255,.55);color:#fff}
.btn-gh:hover{transform:translateY(-2px);border-color:#fff;background:rgba(255,255,255,.1)}

footer{position:relative;overflow:hidden;background:linear-gradient(160deg,#232823,#231F20 60%);color:#fff;padding:70px 0 36px}
footer::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 120% at 90% -10%,rgba(58,181,74,.30),rgba(58,181,74,0) 55%);pointer-events:none}
footer .wrap{position:relative;z-index:1}
.fgrid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px}
footer .brand{font-size:1.8rem;color:#fff}
footer .brand b{color:#7FD98C}
footer p{color:rgba(255,255,255,.74);font-weight:300;font-size:.92rem;line-height:1.7;margin-top:14px;max-width:34ch}
.fcol h4{font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;color:#7FD98C;margin-bottom:14px}
.fcol a,.fcol span{display:block;color:rgba(255,255,255,.74);font-size:.92rem;line-height:1.95;text-decoration:none}
.frule{border:none;border-top:1px solid rgba(255,255,255,.16);margin:44px 0 22px}
.fbot{display:flex;justify-content:space-between;font-size:.8rem;letter-spacing:.04em;color:rgba(255,255,255,.5);flex-wrap:wrap;gap:10px}
@media(max-width:760px){.fgrid{grid-template-columns:1fr;gap:28px}}

/* Six-item nav, see the matching note in css/styles.css. */
@media(max-width:1080px){
  .navlinks{position:static;left:auto;transform:none;gap:18px;font-size:.8rem}
  .navlinks a{white-space:nowrap}
}