@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=Inter:wght@400;500;600;700&family=Manrope:wght@500;600;700;800&display=swap');

:root{
  --navy:#071A2B;
  --teal:#1F8A70;
  --cyan:#20C4D9;
  --bg:#F7F9F7;
  --text:#17202A;
  --muted:#5D6872;
  --line:#DDE5E1;
  --white:#fff;
  --max:1200px;
  --radius:18px;
  --shadow:0 18px 60px rgba(7,26,43,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,sans-serif;line-height:1.65}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(calc(100% - 40px),var(--max));margin:auto}
.mono{font:500 12px/1.4 "IBM Plex Mono",monospace;letter-spacing:.08em;text-transform:uppercase}
h1,h2,h3,h4{font-family:Manrope,sans-serif;line-height:1.08;letter-spacing:-.035em;margin:0}
h1{font-size:clamp(3rem,7vw,6.7rem);max-width:950px}
h2{font-size:clamp(2rem,4vw,3.7rem);max-width:850px}
h3{font-size:1.35rem}
p{margin:0;color:var(--muted)}
.section{padding:110px 0}
.section.tight{padding:80px 0}
.kicker{color:var(--teal);margin-bottom:18px}
.lead{font-size:clamp(1.05rem,1.8vw,1.3rem);max-width:720px}
.nav{position:sticky;top:0;z-index:20;background:rgba(247,249,247,.88);backdrop-filter:blur(18px);border-bottom:1px solid rgba(221,229,225,.8)}
.nav-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:25px}
/* Responsive SustainMarc logo */
.logo {display: flex;align-items: center;min-width: 0;max-width: 100%;overflow: hidden;}
.logo-image {display: block;width: auto !important;height: auto !important;max-width: 180px !important;max-height: 44px !important;object-fit: contain;}
/*.logo img {height: auto;width: auto;display: block;}*/
/*.logo{display:flex;align-items:center;gap:11px;font:800 20px Manrope,sans-serif}*/
.logo-mark{width:30px;height:30px;border:1.5px solid var(--navy);border-radius:9px;position:relative}
.logo-mark:before,.logo-mark:after{content:"";position:absolute;background:var(--teal)}
.logo-mark:before{width:15px;height:2px;left:7px;top:9px;transform:rotate(38deg)}
.logo-mark:after{width:15px;height:2px;left:7px;top:17px;transform:rotate(-38deg)}
.nav-links{display:flex;gap:24px;align-items:center;font-size:13px;color:#3d4850}
.nav-links a:hover{color:var(--teal)}
.nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:999px;padding:13px 19px;font-weight:700;font-size:13px;border:1px solid transparent;transition:.2s ease}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{transform:translateY(-2px);background:#0c2940}
.btn-secondary{border-color:var(--line);background:#fff}
.btn-secondary:hover{border-color:#b7c7c0;transform:translateY(-2px)}
.mobile-toggle{display:none;border:0;background:none;font-size:24px}
/*Hero Background*/
.hero{min-height: calc(100vh - 76px);
    display: grid;
    align-items: center;
    position: relative;
    overflow: hidden;

    background-image: url("https://sustainmarc.com/images/homepage-SustainMarc.png");
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;}
.hero:after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;

    background: linear-gradient(
        90deg,
        rgba(247, 249, 247, 0.94) 0%,
        rgba(247, 249, 247, 0.86) 35%,
        rgba(247, 249, 247, 0.48) 68%,
        rgba(247, 249, 247, 0.12) 100%
    );
}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:50px;align-items:center;position:relative;z-index:1}
.hero-copy .lead{margin:28px 0 32px}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.signal{display:flex;gap:18px;align-items:center;margin-top:50px;padding-top:22px;border-top:1px solid var(--line);max-width:680px}
.signal span{font:500 12px "IBM Plex Mono";color:var(--muted)}
.visual{min-height:520px;border:1px solid #cad8d2;background:linear-gradient(145deg,#fff,#eef4f1);border-radius:28px;position:relative;overflow:hidden;box-shadow:var(--shadow)}
.visual .grid{position:absolute;inset:0;background-image:linear-gradient(rgba(7,26,43,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(7,26,43,.055) 1px,transparent 1px);background-size:36px 36px}
.orbit{position:absolute;border:1px solid rgba(31,138,112,.35);border-radius:50%;left:50%;top:50%;transform:translate(-50%,-50%);width:360px;height:360px}
.orbit.two{width:250px;height:250px;border-color:rgba(32,196,217,.45)}
.core{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:110px;height:110px;border-radius:28px;background:var(--navy);color:#fff;display:grid;place-items:center;text-align:center;box-shadow:0 0 0 15px rgba(32,196,217,.08)}
.node{position:absolute;padding:9px 12px;background:#fff;border:1px solid var(--line);border-radius:12px;font:500 11px "IBM Plex Mono";box-shadow:0 10px 30px rgba(7,26,43,.08)}
.n1{left:12%;top:22%}.n2{right:10%;top:20%}.n3{left:10%;bottom:21%}.n4{right:10%;bottom:19%}
.split{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px;align-items:start}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:0 8px 32px rgba(7,26,43,.035)}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px);transition:.2s}
.card p{font-size:14px;margin-top:10px}
.card .num{font:500 12px "IBM Plex Mono";color:var(--teal);margin-bottom:35px}
.dark{background:var(--navy);color:#fff}
.dark p{color:#b7c4cc}.dark .kicker{color:var(--cyan)}
.pathway{display:grid;grid-template-columns:repeat(7,1fr);align-items:center;gap:10px;margin-top:48px}
.step{border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:18px 10px;text-align:center;background:rgba(255,255,255,.035);font:500 12px "IBM Plex Mono"}
.arrow{color:var(--cyan);text-align:center}
.feature{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.feature-card{min-height:350px;position:relative;overflow:hidden}
.feature-card.large{min-height:440px}
.placeholder-img{height:220px;border-radius:14px;background:
linear-gradient(135deg,rgba(7,26,43,.94),rgba(31,138,112,.75)),
repeating-linear-gradient(0deg,transparent 0 18px,rgba(255,255,255,.07) 19px 20px);
position:relative;overflow:hidden}
.placeholder-img:before{content:"";position:absolute;width:190px;height:190px;border:1px solid rgba(32,196,217,.5);border-radius:50%;left:50%;top:50%;transform:translate(-50%,-50%)}
.placeholder-img:after{content:"LAB / PLACEHOLDER";position:absolute;bottom:14px;left:16px;color:#cbe9e6;font:500 10px "IBM Plex Mono";letter-spacing:.08em}
.badge{display:inline-block;padding:6px 9px;border-radius:999px;background:#eaf4f0;color:var(--teal);font:500 10px "IBM Plex Mono";text-transform:uppercase;letter-spacing:.06em}
.tag-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.domain{min-height:170px}
.domain h3{margin-top:30px}
.quote{border-left:2px solid var(--cyan);padding-left:22px;font:600 22px/1.35 Manrope;color:var(--navy)}
.metric-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:40px}
.metric{background:#fff;padding:28px;min-height:150px}.metric strong{display:block;font:700 24px Manrope;margin:16px 0 8px}.metric span{font-size:12px;color:var(--muted)}
.cta{border-radius:28px;background:linear-gradient(135deg,#0a2337,#0b3046);padding:65px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:30px}
.cta p{color:#c0cbd1;margin-top:12px}
.form{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:30px}
.form .full{grid-column:1/-1}
input,select,textarea{width:100%;padding:14px 15px;border:1px solid var(--line);border-radius:12px;background:#fff;font:inherit;color:var(--text)}
textarea{min-height:150px;resize:vertical}
.footer{background:#061522;color:#d7e0e4;padding:65px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:45px}
.footer a{color:#9eacb5;font-size:13px}.footer a:hover{color:#fff}
.footer h4{font-size:13px;margin-bottom:15px;color:#fff}
.footer p{color:#8f9da6;font-size:13px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:45px;padding-top:20px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:#7f8d96}
.page-hero{padding:110px 0 90px;background:linear-gradient(180deg,#eef5f2,#f7f9f7)}
.page-hero .lead{margin-top:22px}
.timeline{display:grid;gap:0;margin-top:40px}
.timeline-item{display:grid;grid-template-columns:180px 1fr;gap:35px;padding:30px 0;border-top:1px solid var(--line)}
.timeline-item:last-child{border-bottom:1px solid var(--line)}
.timeline-item .year{font:500 12px "IBM Plex Mono";color:var(--teal)}
.accordion{border-top:1px solid var(--line)}
.accordion details{border-bottom:1px solid var(--line);padding:20px 0}
.accordion summary{cursor:pointer;font:700 17px Manrope}
@media(max-width:900px){
 .nav-links{display:none}.mobile-toggle{display:block}
 .hero-grid,.split,.feature{grid-template-columns:1fr}.hero{padding:60px 0}.visual{min-height:390px}
 .grid-3{grid-template-columns:1fr 1fr}.grid-4{grid-template-columns:1fr 1fr}
 .pathway{grid-template-columns:1fr 1fr}.arrow{display:none}
 .metric-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}
 .cta{flex-direction:column;align-items:flex-start}
}
@media(max-width:600px){
 .container{width:min(calc(100% - 28px),var(--max))}
 .section{padding:75px 0}.section.tight{padding:55px 0}
 h1{font-size:clamp(2.65rem,14vw,4.3rem)}
 .grid-3,.grid-4,.metric-grid,.form{grid-template-columns:1fr}
 .form .full{grid-column:auto}
 .footer-grid{grid-template-columns:1fr}
 .footer-bottom{flex-direction:column}
 .timeline-item{grid-template-columns:1fr;gap:8px}
 .hero-copy .lead{margin-top:22px}
}
/*Laboratory Cards*/
.lab-card {
    padding: 0;
    overflow: hidden;
}

.lab-card h3,
.lab-card p {
    margin-left: 28px;
    margin-right: 28px;
}

.lab-card p {
    margin-bottom: 28px;
}

.lab-image {
    position: relative;
    width: 100%;
    height: 230px;
    overflow: hidden;
    background: #e9efec;
}

.lab-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform .5s ease;
}

.lab-card:hover .lab-image img {
    transform: scale(1.04);
}

.lab-image:after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(7,26,43,0.02) 40%,
        rgba(7,26,43,0.48) 100%
    );
    pointer-events: none;
}

.lab-image-label {
    position: absolute;
    left: 16px;
    bottom: 14px;
    z-index: 2;

    padding: 6px 9px;
    border-radius: 999px;

    background: rgba(255,255,255,.90);
    color: var(--navy);

    font: 500 9px "IBM Plex Mono", monospace;
    letter-spacing: .06em;
    text-transform: uppercase;
}
@media(max-width:600px) {
    .lab-image {
        height: 210px;
    }
}
/*Laboratory Cards - End*/
/*Founder Page Image*/
.founder-image {
    position: relative;
    min-height: 520px;
    overflow: hidden;
    border-radius: 24px;
    background: #0b2436;
    border: 1px solid rgba(255,255,255,.12);
}

.founder-image img {
    width: 100%;
    height: 100%;
    min-height: 520px;
    object-fit: cover;
    object-position: center top;
    display: block;
}

.founder-image:after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(7,26,43,0) 50%,
        rgba(7,26,43,.72) 100%
    );
    pointer-events: none;
}

.founder-image-label {
    position: absolute;
    left: 24px;
    bottom: 22px;
    z-index: 2;

    padding: 8px 12px;
    border-radius: 999px;

    background: rgba(255,255,255,.92);
    color: var(--navy);

    font: 500 10px "IBM Plex Mono", monospace;
    letter-spacing: .07em;
    text-transform: uppercase;
}

@media(max-width:900px) {
    .founder-image,
    .founder-image img {
        min-height: 420px;
    }
}

@media(max-width:600px) {
    .founder-image,
    .founder-image img {
        min-height: 360px;
    }
}
/*Founder Page Image - End*/
/*Enquiry Form Feedback*/
/* =========================
   FORM SUCCESS / ERROR POPUP
========================= */

.form-popup {
    position: fixed !important;
    top: 95px !important;
    right: 30px !important;
    z-index: 999999 !important;

    width: min(420px, calc(100% - 40px));

    padding: 18px 22px;

    border-radius: 14px;

    font-size: 14px;
    line-height: 1.5;
    font-weight: 500;

    box-shadow: 0 18px 50px rgba(7,26,43,.18);

    opacity: 0;
    visibility: hidden;

    transform: translateY(-15px);

    transition:
        opacity .35s ease,
        transform .35s ease,
        visibility .35s ease;
}

.form-popup.show {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
}

.form-popup.success {
    background: #ffffff !important;
    color: #176b57 !important;
    border-left: 4px solid var(--teal) !important;
}

.form-popup.error {
    background: #ffffff !important;
    color: #a33a3a !important;
    border-left: 4px solid #c65a5a !important;
}

.form-popup strong {
    font-weight: 700;
}

@media (max-width: 600px) {

    .form-popup {
        top: 85px !important;
        right: 20px !important;
        width: calc(100% - 40px);
    }

}
/*Enquiry Form Feedback - End*/