:root{
  --green:#006747;
  --green-dark:#003d2f;
  --green-mid:#0b7055;
  --gold:#f5c542;
  --cream:#f7f5ef;
  --ink:#1d2a25;
  --muted:#66736d;
  --white:#ffffff;
  --line:#dfe7e2;
  --shadow:0 18px 45px rgba(0,61,47,.10);
  --radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--white);line-height:1.65}
a{color:var(--green);text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.container{width:min(1120px,calc(100% - 40px));margin:auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(0,61,47,.96);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.12)}
.navbar{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:15px;color:white}.brand:hover{text-decoration:none}.brand img{height:42px;width:auto}.brand-text{font-weight:700;line-height:1.1}.brand-text small{display:block;font-weight:500;opacity:.78;font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;margin-top:4px}
.nav-links{display:flex;align-items:center;gap:24px}.nav-links a{color:white;font-weight:600;font-size:.95rem;opacity:.92}.nav-links a:hover,.nav-links a.active{color:var(--gold);text-decoration:none}
.nav-toggle{display:none;background:none;border:0;color:white;font-size:1.65rem;cursor:pointer}
.hero{background:radial-gradient(circle at 80% 20%,rgba(245,197,66,.16),transparent 30%),linear-gradient(145deg,var(--green-dark),#005b43);color:white;padding:96px 0 88px;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:72px;align-items:center}.eyebrow{font-size:.82rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--gold);margin:0 0 18px}.hero h1{font-size:clamp(2.5rem,5vw,4.7rem);line-height:1.02;letter-spacing:-.045em;margin:0 0 24px;max-width:900px}.hero .lead{font-size:1.18rem;color:#dcebe5;max-width:760px;margin:0 0 32px}.actions{display:flex;gap:14px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 20px;border-radius:999px;font-weight:750;border:1px solid transparent;transition:.2s transform,.2s background}.btn:hover{text-decoration:none;transform:translateY(-2px)}.btn-primary{background:var(--gold);color:#183229}.btn-secondary{border-color:rgba(255,255,255,.42);color:white;background:rgba(255,255,255,.04)}.btn-light{background:white;color:var(--green-dark);border-color:var(--line)}
.hero-card{position:relative;min-height:420px;border:1px solid rgba(255,255,255,.18);border-radius:34px;background:rgba(255,255,255,.08);box-shadow:0 30px 80px rgba(0,0,0,.18);padding:30px;display:flex;flex-direction:column;justify-content:flex-end;overflow:hidden}.hero-orbit{position:absolute;inset:26px;border:1px solid rgba(245,197,66,.32);border-radius:50%;transform:rotate(-14deg)}.hero-orbit:before,.hero-orbit:after{content:"";position:absolute;border:1px solid rgba(255,255,255,.2);border-radius:50%;inset:35px}.hero-orbit:after{inset:72px;border-color:rgba(245,197,66,.22)}.vector{position:absolute;background:var(--gold);height:3px;width:150px;top:44%;left:42%;transform:rotate(-26deg);transform-origin:left center}.vector:after{content:"";position:absolute;right:-1px;top:-6px;border-left:13px solid var(--gold);border-top:7px solid transparent;border-bottom:7px solid transparent}.hero-card strong{font-size:1.4rem;position:relative}.hero-card span{position:relative;color:#d9e6e1;margin-top:7px}
.section{padding:82px 0}.section.alt{background:var(--cream)}.section.dark{background:var(--green-dark);color:white}.section-head{max-width:760px;margin-bottom:38px}.section-head h2{font-size:clamp(2rem,4vw,3rem);letter-spacing:-.035em;margin:0 0 14px;line-height:1.1}.section-head p{font-size:1.08rem;color:var(--muted);margin:0}.dark .section-head p{color:#d2e2dc}.kicker{color:var(--green);font-weight:800;text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;margin-bottom:10px}.dark .kicker{color:var(--gold)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.card{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:0 8px 24px rgba(0,61,47,.04)}.card h3{margin:0 0 10px;font-size:1.24rem}.card p{margin:0;color:var(--muted)}.icon{width:48px;height:48px;border-radius:14px;background:#e8f3ef;color:var(--green);display:grid;place-items:center;font-weight:900;font-size:1.2rem;margin-bottom:18px}.stat{font-size:2.35rem;font-weight:850;color:var(--green);letter-spacing:-.05em}.stat-label{color:var(--muted);font-size:.9rem}
.feature{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}.feature.reverse .visual{order:2}.feature h2{font-size:2.55rem;line-height:1.08;letter-spacing:-.035em;margin:0 0 18px}.feature p{color:var(--muted);font-size:1.05rem}.visual,.photo-placeholder{min-height:360px;border-radius:28px;background:linear-gradient(145deg,#dcebe5,#f4f0df);border:1px solid #d7e2dc;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;text-align:center;padding:30px}.photo-placeholder:before{content:"";position:absolute;width:230px;height:230px;border-radius:50%;border:2px dashed rgba(0,103,71,.25)}.photo-placeholder span{position:relative;z-index:2;color:var(--green-dark);font-weight:700;max-width:220px}.visual .cube{width:140px;height:140px;background:white;border:2px solid var(--green);transform:rotate(10deg);box-shadow:18px 18px 0 rgba(245,197,66,.7);display:grid;place-items:center;color:var(--green);font-weight:900}
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.topic{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.13);border-radius:18px;padding:22px}.topic h3{margin:0 0 7px;color:white}.topic p{margin:0;color:#cfe0da;font-size:.95rem}
.page-hero{background:linear-gradient(145deg,var(--green-dark),#005b43);color:white;padding:72px 0 62px}.page-hero h1{font-size:clamp(2.4rem,5vw,4rem);letter-spacing:-.04em;line-height:1.05;margin:8px 0 16px}.page-hero p{font-size:1.12rem;color:#dbe9e4;max-width:780px}.breadcrumbs{font-size:.85rem;color:#b9d1c8}.breadcrumbs a{color:var(--gold)}
.paper-list{display:grid;gap:20px}.paper{border:1px solid var(--line);border-radius:20px;background:white;overflow:hidden}.paper summary{list-style:none;cursor:pointer;padding:24px 26px;display:flex;justify-content:space-between;gap:18px;align-items:flex-start}.paper summary::-webkit-details-marker{display:none}.paper-title{font-size:1.12rem;font-weight:800;color:var(--ink)}.paper-meta{font-size:.9rem;color:var(--muted);margin-top:5px}.paper summary:after{content:"+";font-size:1.55rem;color:var(--green);font-weight:600}.paper[open] summary:after{content:"−"}.paper-body{padding:0 26px 26px;border-top:1px solid var(--line)}.paper-body p{color:var(--muted)}.paper-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.paper-actions a{font-size:.9rem;font-weight:700;padding:9px 14px;border:1px solid var(--line);border-radius:999px}.paper-actions a:hover{background:var(--cream);text-decoration:none}
.resource-card{display:flex;flex-direction:column;min-height:260px}.resource-card .tag{display:inline-flex;align-self:flex-start;background:#e8f3ef;color:var(--green);font-weight:800;font-size:.77rem;text-transform:uppercase;letter-spacing:.08em;padding:6px 10px;border-radius:999px;margin-bottom:18px}.resource-card .push{margin-top:auto;padding-top:22px}
.gallery{display:grid;grid-template-columns:2fr 1fr 1fr;grid-auto-rows:230px;gap:16px}.gallery .photo-placeholder{min-height:0}.gallery .photo-placeholder:first-child{grid-row:span 2}.gallery .wide{grid-column:span 2}
.team-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.person{display:flex;gap:20px;align-items:flex-start}.avatar{width:78px;height:78px;flex:0 0 78px;border-radius:22px;background:linear-gradient(145deg,#dcebe5,#fff4cf);display:grid;place-items:center;color:var(--green);font-weight:900;font-size:1.3rem}.person h3{margin:0 0 4px}.role{font-size:.9rem;color:var(--green);font-weight:700;margin-bottom:9px}.person p{font-size:.95rem}
.callout{background:linear-gradient(135deg,#f8f2d6,#f4f8f5);border:1px solid #e8dfb7;border-radius:26px;padding:32px}.callout h2{margin-top:0}
.site-footer{background:#002b21;color:#d9e5e1;padding:52px 0 32px}.footer-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:50px;align-items:start}.footer-logo{height:58px;width:auto;margin-bottom:18px}.footer-small{font-size:.83rem;color:#adc5bc}.footer-small strong{color:white}.footer-links{display:flex;gap:18px;flex-wrap:wrap;margin-top:18px}.footer-links a{color:white;font-size:.9rem}.disclaimer{border-left:3px solid var(--gold);padding-left:18px;font-size:.84rem;color:#bfd1ca}.copyright{margin-top:30px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);font-size:.8rem;color:#9fb8ae}
.notice{border-radius:16px;background:#f3f7f5;border:1px solid var(--line);padding:18px;color:var(--muted);font-size:.92rem}
@media(max-width:900px){.hero-grid,.feature,.footer-grid{grid-template-columns:1fr}.hero-card{min-height:330px}.grid-3,.topic-grid{grid-template-columns:1fr 1fr}.team-grid{grid-template-columns:1fr}.gallery{grid-template-columns:1fr 1fr}.gallery .photo-placeholder:first-child{grid-row:span 1}.gallery .wide{grid-column:span 2}.nav-toggle{display:block}.nav-links{display:none;position:absolute;left:0;right:0;top:78px;background:var(--green-dark);padding:18px 20px 24px;flex-direction:column;align-items:flex-start}.nav-links.open{display:flex}.navbar{position:relative}.feature.reverse .visual{order:initial}}
@media(max-width:620px){.container{width:min(100% - 28px,1120px)}.hero{padding:70px 0 62px}.section{padding:62px 0}.grid-3,.grid-2,.topic-grid,.gallery{grid-template-columns:1fr}.gallery .wide{grid-column:auto}.brand-text{display:none}.feature h2{font-size:2rem}.person{flex-direction:column}.paper summary{padding:20px}.paper-body{padding:0 20px 20px}}

/* Project photography and app gallery */
.feature-photo{margin:0;min-height:360px;border-radius:28px;overflow:hidden;border:1px solid var(--line);background:var(--cream);box-shadow:var(--shadow);position:relative}
.feature-photo img{width:100%;height:100%;min-height:360px;object-fit:cover}
.feature-photo figcaption{position:absolute;left:0;right:0;bottom:0;padding:28px 22px 18px;background:linear-gradient(transparent,rgba(0,43,33,.9));color:white;font-size:.88rem}
.photo-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:300px;gap:18px}
.gallery-card{margin:0;position:relative;overflow:hidden;border-radius:22px;background:#dcebe5;border:1px solid var(--line);box-shadow:0 8px 24px rgba(0,61,47,.06)}
.gallery-card-large{grid-row:span 2}
.gallery-card-wide{grid-column:span 2}
.gallery-card-featured{grid-column:span 2;grid-row:span 2}
.gallery-card-featured img{object-position:center center}
.gallery-card img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.gallery-card-contain img{object-fit:contain;background:#eef3f0}
.gallery-card-exploration img{object-fit:contain;background:#eef3f0;padding:14px 14px 90px;box-sizing:border-box;transform:none}
.gallery-card-exploration:hover img{transform:none}
.gallery-card:hover img{transform:scale(1.025)}
.gallery-card figcaption{position:absolute;left:0;right:0;bottom:0;padding:44px 20px 18px;background:linear-gradient(transparent,rgba(0,43,33,.9));color:white}
.gallery-card figcaption strong,.gallery-card figcaption span{display:block}
.gallery-card figcaption strong{font-size:1rem}
.gallery-card figcaption span{font-size:.82rem;color:#d9e5e1;margin-top:3px}
.app-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.app-card{margin:0;border-radius:20px;overflow:hidden;background:white;border:1px solid var(--line);box-shadow:0 8px 24px rgba(0,61,47,.05)}
.app-card img{width:100%;height:235px;object-fit:cover;background:#eef3f0}
.app-card figcaption{padding:15px 18px 17px;font-weight:750;color:var(--green-dark)}
@media(max-width:900px){.photo-grid{grid-template-columns:repeat(2,1fr);grid-auto-rows:280px}.gallery-card-large{grid-row:span 1}.gallery-card-wide{grid-column:span 2}.gallery-card-featured{grid-column:span 2;grid-row:span 2}.app-gallery{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.photo-grid,.app-gallery{grid-template-columns:1fr}.photo-grid{grid-auto-rows:280px}.gallery-card-wide{grid-column:auto}.gallery-card-featured{grid-column:auto;grid-row:span 2}.app-card img{height:220px}}

/* Homepage featured MARVLS image */
.hero-photo-card{padding:0;display:block;min-height:420px;background:#002b21}
.hero-photo-card>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-photo-card:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 48%,rgba(0,43,33,.92) 100%)}
.hero-photo-caption{position:absolute;z-index:2;left:0;right:0;bottom:0;padding:28px 30px 30px;display:flex;flex-direction:column}
.hero-photo-caption strong{font-size:1.4rem}
.hero-photo-caption span{color:#d9e6e1;margin-top:7px}
@media(max-width:900px){.hero-photo-card{min-height:330px}}

/* Full-screen app preview and lesson-page preview */
.feature-photo.app-screen-photo{background:#fff;display:flex;align-items:center;justify-content:center;padding:18px}
.feature-photo.app-screen-photo img{width:100%;height:100%;min-height:360px;object-fit:contain;object-position:center}
.lesson-callout{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.72fr);gap:32px;align-items:center}
.lesson-preview{margin:0;border-radius:18px;overflow:hidden;background:#fff;border:1px solid var(--line);box-shadow:0 10px 28px rgba(0,61,47,.08)}
.lesson-preview img{display:block;width:100%;height:auto}
@media(max-width:900px){.lesson-callout{grid-template-columns:1fr}.lesson-preview{max-width:620px}}