:root { --navy:#06265d; --blue:#1055cf; --teal:#14b8bc; --ink:#092455; --muted:#5f6f90; }
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { margin:0; font-family:"Manrope",Arial,sans-serif; color:var(--ink); background:#fff; }
.page-width { width:min(1340px, calc(100% - 64px)); margin-inline:auto; }
.hero { min-height:675px; position:relative; isolation:isolate; color:#fff; background:#0b2556 url("./assets/esgioc-hero-energy-grid.png") center / cover no-repeat; overflow:hidden; }
.hero-overlay { position:absolute; inset:0; z-index:-1; background:linear-gradient(90deg,rgba(3,20,58,.88) 0%,rgba(3,20,58,.62) 31%,rgba(3,20,58,.13) 70%,rgba(2,15,43,.17)),linear-gradient(0deg,rgba(2,19,48,.65),transparent 43%); }
.site-header { position:relative; z-index:2; width:min(1432px,calc(100% - 60px)); min-height:84px; margin:24px auto 0; padding:10px 24px 10px 22px; display:flex; align-items:center; gap:23px; color:#10172b; background:rgba(255,255,255,.97); border-radius:17px; box-shadow:0 12px 25px rgba(0,14,55,.15); }
.brand { flex:0 0 250px; display:flex; align-items:center; }
.brand img { display:block; width:235px; height:61px; object-fit:contain; object-position:left center; }
.main-nav { display:flex; flex:1; align-items:center; justify-content:space-between; gap:13px; white-space:nowrap; }
.main-nav a { position:relative; color:#171a24; font-size:10px; font-weight:800; text-decoration:none; text-transform:uppercase; letter-spacing:-.1px; padding:25px 0; }
.main-nav a i { font-size:8px; margin-left:3px; }
.main-nav a.active { color:#063c9e; }
.main-nav a.active::after { content:""; position:absolute; bottom:10px; left:0; width:31px; height:2px; border-radius:2px; background:#1459d4; }
.header-actions { display:flex; align-items:center; gap:16px; }
.language-button { width:42px; height:33px; padding:0; border:1px solid #adc3ed; border-radius:6px; color:#1653c2; background:#fff; font-weight:700; cursor:pointer; }
.submit-button { display:inline-flex; align-items:center; gap:8px; padding:13px 16px; border-radius:7px; background:#1156c9; box-shadow:0 7px 14px rgba(15,76,185,.25); color:#fff; font-size:12px; font-weight:800; text-decoration:none; text-transform:uppercase; white-space:nowrap; transition:.2s ease; }
.submit-button:hover { background:#0b45a7; transform:translateY(-1px); }
.menu-toggle { display:none; }
.hero-content { padding-top:50px; }
.eyebrow-light { margin:0 0 6px; font-size:20px; line-height:1.4; font-weight:600; }
h1 { max-width:700px; margin:0; font-size:31px; line-height:1.31; letter-spacing:-1.15px; font-weight:800; }
.conference-title { margin-top:10px; font-family:"Barlow Condensed",Impact,sans-serif; font-size:123px; line-height:.95; font-weight:700; letter-spacing:1px; text-transform:uppercase; text-shadow:0 4px 16px rgba(0,0,0,.18); }
.conference-title b { background:linear-gradient(105deg,#44e0cb,#16a3b7); -webkit-background-clip:text; background-clip:text; color:transparent; }
.event-meta { display:flex; align-items:center; gap:18px; margin-top:10px; font-size:17px; font-weight:700; }
.event-meta i { margin-right:8px; font-size:19px; }
.event-divider { width:1px; height:22px; background:rgba(255,255,255,.42); }
.countdown { display:flex; gap:12px; margin-top:21px; }
.count-box { width:111px; height:91px; display:grid; place-items:center; align-content:center; border:2px solid #08b9c3; border-radius:12px; background:rgba(1,18,53,.55); box-shadow:0 0 18px rgba(0,202,235,.12) inset; }
.count-box strong { font-family:"Barlow Condensed",sans-serif; font-size:45px; line-height:1; }
.count-box small { margin-top:5px; font-size:11px; font-weight:800; text-transform:uppercase; }
.deadline-strip { position:relative; z-index:3; min-height:112px; margin-top:-61px; padding:20px 27px; display:grid; grid-template-columns:1.25fr 1.14fr 1.14fr 1.14fr; align-items:center; background:#fff; border-radius:21px; box-shadow:0 13px 26px rgba(5,27,72,.16); }
.deadline-item, .deadline-link { min-height:57px; display:flex; align-items:center; gap:16px; padding:0 25px; border-right:1px solid #dce5f2; }
.deadline-item:first-child { padding-left:0; }
.deadline-item p { margin:0 0 3px; color:#52617d; font-size:10px; font-weight:800; text-transform:uppercase; }
.deadline-item h3 { margin:0; color:#0756c9; font-size:16px; line-height:1.35; }
.deadline-item:first-child h3 { color:#0a9771; }
.deadline-item span:not(.deadline-icon) { color:#6e7b97; font-size:12px; }
.deadline-icon { flex:0 0 55px; width:55px; height:55px; display:grid; place-items:center; border-radius:50%; font-size:23px; }
.deadline-icon.green { color:#108e50; background:#edf8ee; }
.deadline-icon.blue { color:#155cdb; background:#eff5ff; }
.deadline-link { padding-right:0; border:0; color:#0756c9; text-decoration:none; }
.deadline-link > span:last-child { display:grid; gap:5px; white-space:nowrap; }
.deadline-link b { font-size:14px; }
.deadline-link em { color:#6d7991; font-size:11px; font-style:normal; }
.about-section { display:grid; grid-template-columns:36% 64%; gap:42px; padding-top:38px; padding-bottom:34px; border-bottom:1px solid #dce4f0; }
.section-kicker { margin:0 0 10px; color:#0f5ac9; font-size:12px; font-weight:800; text-transform:uppercase; }
.section-kicker span { display:inline-block; width:24px; height:2px; margin:0 0 4px 10px; background:#175bd0; }
.about-copy h2 { margin:0 0 10px; font-size:39px; line-height:1.15; letter-spacing:-1.8px; }
.about-copy h2 span { background:linear-gradient(95deg,#074ec2,#16afb6); -webkit-background-clip:text; background-clip:text; color:transparent; }
.about-copy > p:last-child { max-width:465px; margin:0; color:#64728e; font-size:13px; line-height:1.7; }
.stat-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:26px; }
.stat-card { min-height:167px; display:flex; flex-direction:column; justify-content:center; align-items:center; text-align:center; border:1px solid #e8edf5; border-radius:15px; background:#fff; box-shadow:0 6px 12px rgba(14,47,102,.09); }
.stat-card i { min-height:36px; color:#0761dc; font-size:28px; }
.stat-card:nth-child(2) i { color:#13966e; }
.stat-card:nth-child(3) i { color:#7536e6; }
.stat-card:nth-child(4) i { color:#009eca; }
.stat-card strong { display:block; margin:2px 0 3px; font-size:29px; }
.stat-card span { color:#65728d; font-size:12px; line-height:1.55; }

/* Homepage content blocks: the technical tracks provide a calm, structured
   bridge from the conference overview into the formal publication and
   organizer information. */
.topics-section { padding:66px 0 70px; background:linear-gradient(180deg,#fff 0%,#f8fbff 100%); }
.home-section-heading { max-width:670px; margin-bottom:27px; }
.home-section-heading p { margin:0 0 8px; color:#1260d5; font-size:12px; font-weight:800; letter-spacing:.09em; text-transform:uppercase; }
.home-section-heading h2 { margin:0; color:#08285b; font-size:34px; line-height:1.15; letter-spacing:-1.25px; }
.home-section-heading > span { display:block; margin-top:10px; color:#5e6f8b; font-size:14px; line-height:1.55; }
.topic-card-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.topic-card { min-height:194px; padding:25px 25px 22px; border:1px solid #e1eaf5; border-radius:13px; background:#fff; box-shadow:0 5px 16px rgba(12,42,92,.055); transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease; }
.topic-card:hover { transform:translateY(-5px); border-color:#b7cdf1; box-shadow:0 14px 26px rgba(11,55,119,.13); }
.topic-card > i { display:grid; place-items:center; width:42px; height:42px; margin-bottom:17px; border-radius:11px; color:#1262d9; background:#edf4ff; font-size:21px; }
.topic-card:nth-child(2) > i,.topic-card:nth-child(5) > i { color:#079578; background:#e9f8f3; }
.topic-card:nth-child(3) > i { color:#7a43d6; background:#f3efff; }
.topic-card:nth-child(4) > i { color:#0e94aa; background:#e7f7fa; }
.topic-card:nth-child(6) > i { color:#d17a15; background:#fff4e6; }
.topic-card h3 { margin:0 0 9px; color:#0a2c60; font-size:17px; line-height:1.3; }
.topic-card p { margin:0; color:#61728e; font-size:13px; line-height:1.55; }
.section-action { display:flex; justify-content:center; margin-top:29px; }
.section-action a { display:inline-flex; align-items:center; gap:10px; padding:12px 20px; border:1px solid #2769ca; border-radius:6px; color:#0756c9; font-size:13px; font-weight:800; letter-spacing:.03em; text-decoration:none; text-transform:uppercase; transition:.2s ease; }
.section-action a:hover { color:#fff; background:#0e56c8; transform:translateY(-2px); }

.publication-overview { padding:53px 0; background:#edf4fa; border-block:1px solid #dce8f3; }
.publication-overview-inner { display:grid; grid-template-columns:.95fr 1.35fr; align-items:center; gap:56px; }
.publication-copy > p { margin:0 0 8px; color:#1260d5; font-size:12px; font-weight:800; letter-spacing:.09em; text-transform:uppercase; }
.publication-copy h2 { margin:0 0 12px; color:#092c61; font-size:34px; line-height:1.13; letter-spacing:-1.3px; }
.publication-copy > span { display:block; max-width:510px; color:#566a89; font-size:14px; line-height:1.68; }
.publication-points { display:grid; grid-template-columns:repeat(4,1fr); gap:10px; }
.publication-points article { min-height:132px; display:flex; flex-direction:column; justify-content:center; align-items:center; gap:12px; padding:14px 10px; border:1px solid #d5e2ef; border-radius:10px; background:rgba(255,255,255,.78); text-align:center; }
.publication-points i { color:#1262d9; font-size:24px; }
.publication-points article:nth-child(2) i { color:#0d9878; }
.publication-points article:nth-child(3) i { color:#6d42c9; }
.publication-points article:nth-child(4) i { color:#0e8ea7; }
.publication-points h3 { margin:0; color:#123767; font-size:13px; line-height:1.4; }

.organizers-section { padding:65px 0 74px; background:#fff; }
.home-section-heading.compact { margin-bottom:26px; }
.organizer-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.organizer-card { min-height:184px; display:flex; flex-direction:column; align-items:center; justify-content:center; padding:22px 25px; border:1px solid #e3ebf4; border-radius:12px; background:#fff; text-align:center; }
.organizer-card > p { margin:0 0 15px; color:#5e7394; font-size:11px; font-weight:800; letter-spacing:.1em; text-transform:uppercase; }
.organization-mark { width:58px; height:58px; display:grid; place-items:center; margin-bottom:14px; border:1px solid #d6e4f3; border-radius:12px; color:#115bc9; background:#f5f9ff; font-size:26px; }
.organizer-card:nth-child(2) .organization-mark { color:#0a9677; background:#effaf6; }
.organizer-card:nth-child(3) .organization-mark { color:#6e47c9; background:#f6f2ff; }
.organizer-card h3 { max-width:300px; margin:0; color:#102f5c; font-size:16px; line-height:1.45; }

@media (max-width:1250px) { .site-header { gap:14px; } .brand { flex-basis:190px; } .brand img { width:183px; } .main-nav { gap:9px; } .main-nav a { font-size:8px; } .header-actions { gap:8px; } .submit-button { padding:12px; font-size:10px; } .deadline-strip { grid-template-columns:repeat(2,1fr); gap:15px; } .deadline-item:nth-child(2) { border-right:0; } .deadline-link { padding-left:0; } }
@media (max-width:1050px) { .topic-card-grid { grid-template-columns:repeat(2,1fr); } .publication-overview-inner { grid-template-columns:1fr; gap:26px; } .publication-copy > span { max-width:720px; } }
@media (max-width:800px) { .page-width { width:min(100% - 34px, 600px); } .hero { min-height:760px; background-position:57% center; } .site-header { width:calc(100% - 34px); min-height:68px; padding:8px 14px; margin-top:15px; border-radius:13px; } .brand { flex:1; } .brand img { width:184px; height:48px; } .main-nav { display:none; position:absolute; top:78px; left:0; right:0; padding:14px 22px; flex-direction:column; align-items:flex-start; background:#fff; border-radius:13px; box-shadow:0 12px 23px rgba(4,29,78,.18); } .main-nav.open { display:flex; } .main-nav a { padding:7px 0; font-size:12px; } .main-nav a.active::after { display:none; } .header-actions { display:none; } .menu-toggle { display:grid; place-items:center; width:38px; height:38px; border:0; color:#0b4daf; background:#eef5ff; border-radius:8px; font-size:17px; cursor:pointer; } .hero-content { padding-top:70px; } .eyebrow-light { font-size:17px; } h1 { font-size:26px; letter-spacing:-.9px; } .conference-title { font-size:84px; } .event-meta { gap:9px; flex-wrap:wrap; font-size:14px; } .event-divider { display:none; } .countdown { gap:7px; } .count-box { width:calc((100vw - 55px)/4); max-width:105px; height:80px; border-radius:9px; } .count-box strong { font-size:37px; } .count-box small { font-size:8px; } .deadline-strip { grid-template-columns:1fr; margin-top:-25px; padding:18px 20px; border-radius:15px; } .deadline-item, .deadline-link { min-height:67px; padding:11px 0; border-right:0; border-bottom:1px solid #e2e9f3; } .deadline-link { border-bottom:0; } .about-section { display:block; padding-top:42px; } .about-copy h2 { font-size:34px; } .stat-grid { grid-template-columns:repeat(2,1fr); gap:15px; margin-top:27px; } .stat-card { min-height:145px; } }
@media (max-width:800px) { .topics-section,.organizers-section { padding:46px 0 50px; } .home-section-heading h2,.publication-copy h2 { font-size:29px; } .topic-card-grid,.organizer-grid { grid-template-columns:1fr; } .topic-card { min-height:0; } .publication-overview { padding:42px 0; } .publication-points { grid-template-columns:repeat(2,1fr); } .publication-points article { min-height:118px; } }
@media (max-width:400px) { .conference-title { font-size:72px; } h1 { font-size:23px; } }