/* SMART-HEAT PRO — production stylesheet */
:root{
  --navy:#0B1728;
  --white:#FFFFFF;
  --off-white:#F7F7F4;
  --steel:#0F6FA8;
  --steel-light:#4FA6D8;
  --orange:#F47B20;
  --red:#D9281C;
  --slate:#69727D;
  --light-grey:#E8EBEE;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'DM Mono', monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--white);font-family:var(--font-body);color:var(--navy);-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;}
a{color:var(--steel);text-decoration:none;}
a:hover{color:var(--navy);}
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{outline:2px solid var(--steel);outline-offset:2px;}
h1,h2,h3,p{margin:0;}
ul{margin:0;}

.tag{font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;text-transform:uppercase;}
.wrap{max-width:1280px;margin:0 auto;padding:0 40px;}
.sec{padding:clamp(64px,8vw,120px) 0;}

/* ---------- NAV ---------- */
.site-nav{position:sticky;top:0;z-index:50;background:var(--white);border-bottom:1px solid var(--light-grey);padding:6px 0;}
.nav-row{display:flex;align-items:center;justify-content:space-between;gap:24px;}
.nav-logo img{height:104px;}
.nav-links{display:flex;gap:32px;flex-wrap:wrap;}
.nav-links a{color:var(--navy);font-size:13px;font-weight:500;text-transform:uppercase;letter-spacing:.05em;border-bottom:2px solid transparent;padding-bottom:4px;}
.nav-links a:hover{color:var(--orange);border-bottom-color:var(--orange);}
.nav-cta{background:var(--navy);border:1px solid var(--orange);color:var(--orange);font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:.05em;padding:9px 18px;border-radius:2px;white-space:nowrap;}
.nav-cta-mobile.btn{display:none;}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;min-width:44px;min-height:44px;align-items:center;justify-content:center;}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{content:'';display:block;width:22px;height:2px;background:var(--navy);position:relative;transition:.2s;}
.nav-toggle span::before{position:absolute;top:-7px;}
.nav-toggle span::after{position:absolute;top:7px;}

/* ---------- HERO ---------- */
.hero{background:var(--navy);padding:clamp(72px,12vw,110px) 0 clamp(56px,8vw,90px);position:relative;overflow:hidden;}
.hero video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;background:var(--navy);}
.hero-scrim{position:absolute;inset:0;background:rgba(11,23,40,.72);z-index:0;}
.hero-inner{position:relative;z-index:1;}
.hero-eyebrow{color:#8A96A5;margin-bottom:20px;font-size:14px;font-weight:700;}
.hero h1{font-size:clamp(32px,5vw,56px);font-weight:700;color:#fff;line-height:1.1;margin:0 0 24px;max-width:820px;letter-spacing:-0.01em;}
.hero-sub{font-size:clamp(15px,2vw,18px);color:#9AABBB;max-width:640px;line-height:1.7;margin:0 0 clamp(28px,4vw,40px);}
.hero-pills{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:36px;}
.pill{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#fff;background:rgba(79,166,216,.16);padding:7px 12px;border-radius:2px;}
.hero-ctas{display:flex;gap:16px;flex-wrap:wrap;}
.btn{display:inline-block;font-size:14px;font-weight:500;padding:15px 30px;border-radius:2px;text-align:center;}
.btn-white{background:#fff;color:var(--navy);}
.btn-outline-light{border:1px solid var(--orange);color:#fff;padding:14px 29px;}
.btn-orange{background:var(--orange);color:#fff;}

@media (prefers-reduced-motion: reduce){
  .hero video{display:none;}
  .hero{background:var(--navy) linear-gradient(160deg,#0B1728,#132538);}
}

/* ---------- GENERIC SECTION PARTS ---------- */
.eyebrow{color:var(--orange);margin-bottom:16px;display:block;font-size:13px;letter-spacing:.1em;font-weight:700;}
.h2{font-size:clamp(26px,4vw,34px);font-weight:700;color:var(--navy);line-height:1.2;margin:0 0 24px;text-wrap:pretty;}
.h2.accent-orange{color:var(--orange);}
.body-text{font-size:16px;color:#2A2E33;line-height:1.75;text-wrap:pretty;font-weight:450;}

.two-col{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start;}
@media (max-width:860px){.two-col{grid-template-columns:1fr;gap:40px;}}

.img-box{width:100%;min-height:340px;background:var(--light-grey) center/cover no-repeat;border-radius:2px;}

/* ---------- CHALLENGE ---------- */
.challenge{background:var(--off-white);}

/* ---------- TECH GRID (SENSE/ANALYSE/SUPPORT) ---------- */
.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--light-grey);border:1px solid var(--light-grey);margin-bottom:1px;}
.tech-grid.workflow{display:flex;align-items:stretch;gap:0;background:none;border:none;margin-bottom:24px;}
.tech-grid.workflow .tech-card{flex:1;border:1px solid var(--light-grey);}
.tech-card{background:#fff;padding:36px 30px;border-top:2px solid transparent;}
.tech-card:first-child{border-top-color:var(--orange);}
.tech-card h3{font-size:20px;font-weight:700;color:var(--navy);margin-bottom:14px;line-height:1.3;}
.tech-card p{font-size:14px;color:#3A4048;line-height:1.7;}
@media (max-width:760px){.tech-grid{grid-template-columns:1fr;}.tech-grid.workflow{flex-direction:column;}}
.workflow-arrow{display:flex;align-items:center;justify-content:center;color:var(--orange);font-size:22px;font-weight:700;min-width:32px;flex-shrink:0;}
@media (max-width:760px){.workflow-arrow{transform:rotate(90deg);padding:4px 0;min-width:0;}}

.fit-banner{background:var(--navy);padding:36px 30px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:24px;}
.fit-banner h3{font-size:18px;font-weight:700;color:#fff;margin-bottom:10px;}
.fit-banner p{font-size:14px;color:#9AABBB;line-height:1.7;}

.detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;}
.detail-grid.workflow{grid-template-columns:1fr auto 1fr auto 1fr;align-items:start;gap:16px;}
@media (max-width:760px){.detail-grid.workflow{grid-template-columns:1fr;}}
.detail-grid h3{font-size:17px;font-weight:700;color:var(--navy);margin-bottom:12px;}
.detail-grid p{font-size:14px;color:#3A4048;line-height:1.7;margin-bottom:16px;}
.detail-grid ul{padding-left:18px;font-size:13px;color:#3A4048;line-height:1.9;}
@media (max-width:760px){.detail-grid{grid-template-columns:1fr;gap:32px;}}

/* ---------- INTEGRATION PATHWAY ---------- */
.integration{background:var(--navy);}
.pathway{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;margin-bottom:20px;}
.pathway-step{display:flex;flex-direction:column;align-items:center;gap:10px;color:#fff;min-width:80px;}
.pathway-icon{width:56px;height:56px;border:1px solid #2C4257;display:flex;align-items:center;justify-content:center;font-size:20px;color:#8FA0B5;}
.pathway-icon.active{border-color:var(--steel);background:rgba(15,111,168,.15);color:#7FC4E8;}
.pathway-icon.highlight{border-color:var(--orange);background:rgba(244,123,32,.12);color:#F9AA6E;}
.pathway-step span{font-size:12px;font-weight:500;text-align:center;}
.pathway-line{flex:1;min-width:24px;height:2px;background:linear-gradient(90deg,#2C4257,rgba(244,123,32,.45));}
.pathway-caption{text-align:center;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:#5B7085;margin-bottom:44px;}
@media (max-width:760px){
  .pathway{display:grid;grid-template-columns:repeat(3,1fr);gap:24px 12px;align-items:start;}
  .pathway-line{display:none;}
  .pathway-icon{width:48px;height:48px;font-size:10px;}
  .pathway-step{min-width:0;}
  .pathway-step span{font-size:11px;}
}

/* ---------- CARD GRIDS (demo / consortium) ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--light-grey);border:1px solid var(--light-grey);margin-bottom:24px;}
.card-grid.five{grid-template-columns:repeat(5,1fr);margin-bottom:0;}
.partner-card{background:#fff;padding:32px 28px;display:flex;flex-direction:column;align-items:center;text-align:center;border-top:3px solid var(--orange);}
.partner-logo-box{height:120px;width:100%;display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.partner-logo-box img{max-height:100%;max-width:100%;object-fit:contain;}
.partner-card p{font-size:14px;color:#3A4048;line-height:1.7;}
.partner-card .role{font-size:12px;color:var(--slate);line-height:1.6;margin-top:20px;}
@media (max-width:900px){.card-grid{grid-template-columns:1fr;}.card-grid.five{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.card-grid.five{grid-template-columns:1fr;}}

/* ---------- PROJECT JOURNEY ---------- */
.journey-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-top:40px;}
.journey-grid:first-of-type{margin-top:0;}
.journey-step .num{display:block;width:40px;height:3px;background:var(--orange);margin-bottom:18px;}
.journey-step h3{font-size:15px;font-weight:700;color:var(--navy);margin-bottom:8px;line-height:1.3;min-height:40px;}
.journey-step p{font-size:12px;color:var(--slate);line-height:1.6;margin-bottom:16px;min-height:60px;}
.journey-img{width:100%;aspect-ratio:4/3;height:auto;background:var(--light-grey) center/cover no-repeat;border-radius:2px;object-fit:cover;}
@media (max-width:900px){.journey-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.journey-grid{grid-template-columns:1fr;}.journey-step p, .journey-step h3{min-height:auto;}}

/* ---------- TIMELINE ---------- */
.timeline{background:var(--navy);}
.timeline-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;}
.timeline-item{border-left:2px solid rgba(244,123,32,.35);padding-left:20px;}
.timeline-item.final{border-left-color:var(--orange);border-left-width:3px;}
.timeline-item .period{color:#7FC4E8;margin-bottom:10px;display:block;}
.timeline-item.final .period{color:#F9AA6E;}
.timeline-item h3{font-size:16px;font-weight:700;color:#fff;margin-bottom:8px;}
.timeline-item p{font-size:13px;color:#9AABBB;line-height:1.6;}
@media (max-width:900px){.timeline-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.timeline-grid{grid-template-columns:1fr;}}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:1px;background:var(--light-grey);border:1px solid var(--light-grey);}
.faq-item{background:#fff;}
.faq-q{width:100%;text-align:left;background:none;border:none;padding:22px 28px;display:flex;align-items:center;justify-content:space-between;gap:20px;cursor:pointer;font-family:var(--font-body);min-height:44px;}
.faq-q h3{font-size:16px;font-weight:700;color:var(--navy);margin:0;}
.faq-sign{color:var(--orange);flex-shrink:0;font-size:20px;line-height:1;font-family:var(--font-mono);font-weight:700;}
.faq-a{padding:0 28px 22px;font-size:14px;color:#3A4048;line-height:1.7;display:none;}
.faq-item.open .faq-a{display:block;}

/* ---------- CTA / CONTACT ---------- */
.cta-sec{background:var(--navy);text-align:center;}
.cta-sec h2{color:#fff;max-width:700px;margin:0 auto 20px;}
.cta-sec p{font-size:15px;color:#9AABBB;max-width:640px;margin:0 auto 40px;line-height:1.7;}
.cta-ctas{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}

form{display:flex;flex-direction:column;gap:18px;}
form label{font-size:12px;font-weight:500;color:var(--navy);text-transform:uppercase;letter-spacing:.03em;display:block;margin-bottom:6px;}
form input, form textarea{width:100%;border:1px solid var(--light-grey);background:#fff;padding:12px 14px;font-size:14px;font-family:var(--font-body);border-radius:2px;}
form button{background:var(--navy);color:#fff;font-size:14px;font-weight:500;padding:14px 28px;border:none;border-radius:2px;cursor:pointer;width:fit-content;min-height:44px;}

/* ---------- FOOTER ---------- */
footer{background:#fff;border-top:1px solid var(--light-grey);padding:48px 0;}
.footer-top{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:24px;}
.footer-brand img{height:90px;margin-bottom:14px;}
.footer-brand p{font-size:12px;color:var(--slate);max-width:360px;line-height:1.6;margin-bottom:10px;}
.footer-contact{display:flex;align-items:center;gap:14px;}
.footer-contact a{font-size:12px;}
.social-btn{width:28px;height:28px;border:1px solid var(--light-grey);border-radius:2px;display:flex;align-items:center;justify-content:center;}
.footer-right{text-align:right;}
.footer-right .tag{color:var(--slate);margin-bottom:8px;display:block;}
.footer-consortium{font-size:12px;color:var(--navy);margin-bottom:18px;}
.footer-funding{display:flex;align-items:center;gap:10px;justify-content:flex-end;}
.footer-funding img{height:48px;}
.footer-bottom{border-top:1px solid var(--light-grey);margin-top:36px;padding-top:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;}
.footer-bottom p{font-size:12px;color:var(--slate);}
.legal-links{display:flex;gap:24px;flex-wrap:wrap;}
.legal-links a{font-size:12px;color:var(--slate);}
@media (max-width:760px){.footer-right{text-align:left;}.footer-funding{justify-content:flex-start;}}

/* ---------- LEGAL PANELS ---------- */
.legal-panel{display:none;background:#fff;position:fixed;inset:0;z-index:100;overflow-y:auto;}
.legal-panel.open{display:block;}
.legal-head{background:var(--navy);padding:20px 0;}
.legal-head a{color:#fff;font-weight:700;font-size:15px;}
.legal-body{max-width:820px;margin:0 auto;padding:64px 40px 120px;}
.legal-body h1{font-size:36px;font-weight:700;color:var(--navy);margin:0 0 8px;}
.legal-body .date{font-size:13px;color:var(--slate);margin:0 0 40px;display:block;}
.legal-body h2{font-size:20px;font-weight:700;color:var(--navy);margin:36px 0 12px;}
.legal-body p{font-size:15px;color:#3A4048;line-height:1.8;margin:0 0 12px;}
.legal-table{width:100%;border-collapse:collapse;margin-top:12px;}
.legal-table th,.legal-table td{text-align:left;padding:10px 12px;font-size:13px;border-bottom:1px solid var(--light-grey);color:#3A4048;}
.legal-table th{color:var(--navy);font-weight:700;background:var(--off-white);}

/* ---------- MOBILE NAV ---------- */
@media (max-width:900px){
  .wrap{padding:0 24px;}
  .nav-links{position:fixed;top:64px;left:0;right:0;bottom:0;background:#fff;flex-direction:column;padding:24px;gap:20px;display:none;z-index:49;overflow-y:auto;}
  .nav-links.open{display:flex;}
  .nav-links a{font-size:16px;padding:10px 0;}
  .nav-cta{display:none;}
  .nav-links .nav-cta-mobile.btn{display:inline-block;margin-top:12px;}
  .nav-toggle{display:flex;}
}