/* ── RESET ── */
    /* ── BRAND TOKENS ── */
    :root{
      /* Primary brand */
      --purple:      #4F4386;
      --purple-dk:   #3b3169;
      --purple-lt:   #635aa0;
      --purple-pale: #f3f2f8;
      --purple-tint: #eceaf5;
      --green:       #80C341;
      --green-dk:    #68a032;
      --green-lt:    #9dd45e;
      --green-pale:  #f2f9eb;
      /* Neutrals */
      --white:       #ffffff;
      --off:         #f8f7fc;
      --warm:        #fdfcfe;
      --text:        #1a1530;
      --text-2:      #4a4468;
      --text-3:      #8b87a8;
      --border:      rgba(79,67,134,.12);
      --border-lt:   rgba(79,67,134,.08);
      /* System accent colours (for research tags etc) */
      --red:         #d95c5c;
      --amber:       #e07d4a;
      --blue:        #5babd4;
      /* Type */
      --serif:       'Cormorant Garamond',Georgia,serif;
      --sans:        'DM Sans',system-ui,sans-serif;
    }

    body{font-family:var(--sans);color:var(--text);background:var(--white);overflow-x:hidden}

    /* ── TOP BAR ── */
    .topbar{background:var(--purple-dk);padding:.55rem 2.5rem;display:flex;justify-content:space-between;align-items:center;font-size:.78rem;color:rgba(255,255,255,.55);letter-spacing:.02em}
    .topbar a{color:rgba(255,255,255,.55)}.topbar a:hover{color:var(--green)}
    .topbar-r{display:flex;gap:1.5rem}


    /* ── SHARED ATOMS ── */
    .tag{font-size:.72rem;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--green-dk);margin-bottom:.9rem;display:block}
    .tag-lt{color:var(--green-lt)}
    .tag-pu{color:rgba(255,255,255,.5)}

    h2.h2{font-family:var(--serif);font-size:clamp(2rem,3.5vw,3rem);font-weight:500;line-height:1.18;margin-bottom:1rem;color:var(--text)}
    h2.h2 em{font-style:italic;color:var(--green-dk)}
    h2.h2.lt{color:var(--white)}
    h2.h2.lt em{color:var(--green-lt)}

    h3.h3{font-family:var(--serif);font-size:clamp(1.2rem,2vw,1.55rem);font-weight:500;line-height:1.3;margin-bottom:.85rem;color:var(--text)}
    h3.h3.lt{color:rgba(255,255,255,.9)}
    h3.h3 em{font-style:italic;color:var(--green-dk)}
    h3.h3.lt em{color:var(--green-lt)}

    p.body{font-size:.93rem;line-height:1.8;color:var(--text-2);margin-bottom:1.5rem}
    p.body.lt{color:rgba(255,255,255,.58)}
    p.body strong{color:var(--text);font-weight:600}
    p.body.lt strong{color:var(--white)}

    /* ── BUTTONS ── */
    .btn{display:inline-flex;align-items:center;font-size:.875rem;font-weight:500;padding:.75rem 1.75rem;border-radius:4px;transition:all .2s}
    .btn-g{background:var(--green);color:var(--white)}.btn-g:hover{background:var(--green-dk)}
    .btn-ow{border:1px solid rgba(255,255,255,.35);color:rgba(255,255,255,.8)}.btn-ow:hover{border-color:var(--white);color:var(--white)}
    .btn-op{border:1px solid rgba(79,67,134,.3);color:var(--purple)}.btn-op:hover{border-color:var(--purple);background:var(--purple-tint)}
    .btns{display:flex;gap:1rem;flex-wrap:wrap}

    /* ── MEDIA PLACEHOLDERS ── */
    .vid-ph{background:rgba(79,67,134,.04);border:1.5px dashed rgba(79,67,134,.2);border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.7rem;color:rgba(79,67,134,.3);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;font-weight:500;min-height:340px}
    .vid-ph.dk{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.15);color:rgba(255,255,255,.25)}
    .vid-ph svg{width:34px;height:34px;opacity:.4}
    .img-ph{background:rgba(79,67,134,.04);border:1.5px dashed rgba(79,67,134,.15);border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.5rem;color:rgba(79,67,134,.28);font-size:.68rem;text-transform:uppercase;letter-spacing:.08em;font-weight:500;min-height:180px}
    .img-ph.dk{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.12);color:rgba(255,255,255,.22)}
    .img-ph svg{width:26px;height:26px;opacity:.4}

    /* ── HERO ── */
    .hero{background:var(--purple);position:relative;overflow:hidden}
    .hero-vid{position:absolute;inset:0;z-index:0}
    .hero-vid video{width:100%;height:100%;object-fit:cover;opacity:.12}
    .hero-ov{position:absolute;inset:0;background:linear-gradient(180deg,rgba(79,67,134,.5) 0%,rgba(59,49,105,.97) 100%);z-index:1}
    .hero-ct{position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:6rem 2.5rem 0;text-align:center}
    .hero-badge{display:inline-flex;align-items:center;gap:.5rem;background:rgba(128,195,65,.15);border:1px solid rgba(128,195,65,.3);color:var(--green-lt);padding:.4rem 1.1rem;border-radius:100px;font-size:.72rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;margin-bottom:2rem}
    .hero-badge::before{content:'';display:block;width:6px;height:6px;background:var(--green);border-radius:50%;animation:bk 2s ease-in-out infinite}
    @keyframes bk{0%,100%{opacity:1}50%{opacity:.25}}
    .hero h1{font-family:var(--serif);font-size:clamp(2.6rem,5.5vw,4.8rem);font-weight:500;color:var(--white);line-height:1.1;margin-bottom:1.4rem}
    .hero h1 em{font-style:italic;color:var(--green)}
    .hero-sub{font-size:1.05rem;color:rgba(255,255,255,.5);max-width:580px;margin:0 auto 2.5rem;line-height:1.75}
    .hero-stats{background:rgba(0,0,0,.15);border-top:1px solid rgba(255,255,255,.1);margin-top:4rem}

    /* ── STATS STRIP ── */
    .stats-strip{display:flex}
    .stat-item{flex:1;padding:1.8rem 2rem;border-right:1px solid rgba(255,255,255,.1)}
    .stat-item:last-child{border-right:none}
    .stat-n{font-family:var(--serif);font-size:2.2rem;font-weight:600;color:var(--green);line-height:1;display:block;margin-bottom:.3rem}
    .stat-l{font-size:.75rem;color:rgba(255,255,255,.4);line-height:1.4}

    /* ── POWERED ── */
    .powered{background:var(--white);border-bottom:1px solid var(--border-lt);padding:1.8rem 2.5rem;display:flex;align-items:center;justify-content:center;gap:1.5rem}
    .powered span{font-size:.72rem;color:var(--text-3);font-weight:500;letter-spacing:.06em;text-transform:uppercase}
    .powered img{}

    /* ── SECTION WRAPPERS ── */
    .sw{padding:6rem 2.5rem}
    .sw.pu{background:var(--purple)}             /* purple — hero-dark */
    .sw.pu2{background:var(--purple-dk)}          /* deeper purple */
    .sw.pu3{background:var(--purple-lt)}          /* lighter purple accent */
    .sw.white{background:var(--white)}
    .sw.off{background:var(--off)}                /* very pale purple-white */
    .sw.warm{background:var(--warm)}
    .sw.pale{background:var(--purple-pale)}       /* purple tint — section separator */
    .si{max-width:1200px;margin:0 auto}

    /* ── SPLIT ── */
    .split{display:grid;grid-template-columns:1fr 1fr;gap:5rem;align-items:center}
    .split.rev .mc{order:-1}

    /* ── CHECK LIST ── */
    .cklist{display:flex;flex-direction:column;gap:.7rem;margin-bottom:1.5rem}
    .cklist li{display:flex;gap:.85rem;align-items:flex-start;font-size:.9rem;line-height:1.65;color:var(--text-2)}
    .cklist.lt li{color:rgba(255,255,255,.58)}
    .cklist li::before{content:'';display:block;width:18px;height:18px;flex-shrink:0;background:rgba(128,195,65,.15) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2 6l3 3 5-5' stroke='%2380C341' stroke-width='1.8' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/12px no-repeat;border:1px solid rgba(128,195,65,.35);border-radius:50%;margin-top:.1rem}
    .cklist li strong{color:var(--text);font-weight:600}
    .cklist.lt li strong{color:var(--white)}

    /* ── IMAGE CARD GRID ── */
    .icg{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;margin-top:2.5rem}
    .ic-thumb{border-radius:10px;overflow:hidden;aspect-ratio:4/3;margin-bottom:.9rem;background:rgba(255,255,255,.06)}
    .ic-thumb img{width:100%;height:100%;object-fit:cover}
    .ic h6{font-size:.83rem;font-weight:600;color:var(--white);margin-bottom:.4rem}
    .ic a{font-size:.78rem;color:var(--green-lt);font-weight:500}
    .ic a:hover{text-decoration:underline}

    /* ── FACTS BANNER ── */
    .fb{background:var(--purple-dk);border-top:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.08)}
    .fb-in{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr)}
    .fb-item{padding:3rem 2.5rem;border-right:1px solid rgba(255,255,255,.08);text-align:center}
    .fb-item:last-child{border-right:none}
    .fb-n{font-family:var(--serif);font-size:3rem;font-weight:600;line-height:1;display:block;margin-bottom:.5rem}
    .fb-l{font-size:.8rem;color:rgba(255,255,255,.42);line-height:1.5}
    .fb-s{font-size:.63rem;color:rgba(255,255,255,.2);margin-top:.4rem}

    /* ── SYSTEM TAGS ── */
    .sys-tag{display:inline-flex;align-items:center;gap:.5rem;font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;margin-bottom:1rem}
    .sdot{width:8px;height:8px;border-radius:50%;flex-shrink:0}
    .sdot-b{background:var(--red)}.sdot-d{background:var(--purple-lt)}.sdot-g{background:var(--green)}
    .stag-b{color:var(--red)}.stag-d{color:rgba(255,255,255,.7)}.stag-g{color:var(--green-lt)}

    /* ── FACT CARDS (dark) ── */
    .fcards{display:flex;flex-direction:column;gap:.85rem}
    .fc{display:flex;gap:1.1rem;align-items:flex-start;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:10px;padding:1.1rem 1.3rem}
    .fn{font-family:var(--serif);font-size:1.8rem;font-weight:600;line-height:1;flex-shrink:0;min-width:64px}
    .fn-b{color:var(--red)}.fn-d{color:#b8aaee}.fn-g{color:var(--green)}
    .fb2 strong{display:block;font-size:.83rem;font-weight:600;color:var(--white);margin-bottom:.22rem}
    .fb2 span{font-size:.78rem;color:rgba(255,255,255,.4);line-height:1.55}

    /* ── DOMAIN TABS (light bg) ── */
    .dtabs{display:flex;gap:.4rem;flex-wrap:wrap;border-bottom:2px solid var(--border-lt)}
    .dtab{padding:.7rem 1.25rem;font-family:var(--sans);font-size:.84rem;font-weight:500;color:var(--text-3);border:none;background:none;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .2s}
    .dtab:hover{color:var(--purple)}
    .dtab.on{color:var(--purple);border-bottom-color:var(--green);font-weight:600}

    .dpanel{display:none}
    .dpanel.on{display:grid;grid-template-columns:1.1fr 1fr;gap:4rem;align-items:start;padding-top:2.5rem}
    .dpanel h3{font-family:var(--serif);font-size:1.7rem;font-weight:500;line-height:1.2;margin-bottom:.75rem;color:var(--text)}
    .dpanel h3 em{font-style:italic;color:var(--green-dk)}
    .dpanel>.dl>p.intro{font-size:.9rem;color:var(--text-2);line-height:1.75;margin-bottom:1.5rem}

    .dfinds{display:flex;flex-direction:column;gap:.65rem; text-align: left;}
    .dfind{display:-webkit-box;gap:.85rem;align-items:flex-start;font-size:.84rem;line-height:1.65;color:var(--text-2)}
    .dfind::before{content:'';display:block;width:7px;height:7px;background:var(--green);border-radius:50%;flex-shrink:0;margin-top:.5rem}
    .dfind strong{color:var(--text);font-weight:600}

    .dstats{display:flex;flex-direction:column;gap:1rem}
    .dsc{background:var(--white);border:1px solid var(--border);border-radius:12px;padding:1.3rem 1.4rem;display:flex;gap:1.2rem;align-items:flex-start;box-shadow:0 2px 8px rgba(79,67,134,.07)}
    .dsc-n{font-family:var(--serif);font-size:1.9rem;font-weight:600;line-height:1;flex-shrink:0;min-width:56px}
    .dsc-t strong{display:block;font-size:.83rem;font-weight:600;color:var(--text);margin-bottom:.2rem}
    .dsc-t span{font-size:.77rem;color:var(--text-3);line-height:1.5}
    .dsc-src{font-size:.61rem;color:#b0aac8;margin-top:.3rem;display:block}

    /* ── DEV GRID ── */
    .devg{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem;margin-top:3rem}
    .devc{background:var(--white);border:1px solid var(--border);border-radius:14px;padding:1.8rem;box-shadow:0 2px 10px rgba(79,67,134,.06)}
    .devc-ico{font-size:1.7rem;margin-bottom:.85rem}
    .devc h4{font-size:1rem;font-weight:600;margin-bottom:.45rem;color:var(--text)}
    .devc>p{font-size:.83rem;color:var(--text-2);line-height:1.65;margin-bottom:1rem}
    .dvrs{display:flex;gap:.4rem;flex-wrap:wrap}
    .dvr{font-size:.68rem;font-weight:600;padding:.25rem .65rem;border-radius:5px}
    .dvr-b{background:rgba(217,92,92,.08);color:#b03030}
    .dvr-d{background:rgba(79,67,134,.1);color:var(--purple)}
    .dvr-g{background:rgba(128,195,65,.12);color:var(--green-dk)}

    /* ── STUDY CARDS (dark purple bg) ── */
    .sg{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
    .sc{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:1.8rem;display:flex;flex-direction:column;position:relative;overflow:hidden;transition:background .2s}
    .sc:hover{background:rgba(255,255,255,.09)}
    .sc-bar{position:absolute;top:0;left:0;right:0;height:3px}
    .bar-b{background:linear-gradient(90deg,var(--red),#c03030)}
    .bar-d{background:linear-gradient(90deg,#b8aaee,var(--purple-lt))}
    .bar-g{background:linear-gradient(90deg,var(--green),var(--green-dk))}
    .bar-m{background:linear-gradient(90deg,var(--red),var(--purple-lt),var(--green))}
    .sc-j{font-size:.64rem;letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.22);margin-bottom:.75rem;font-weight:500}
    .sc h4{font-size:.95rem;font-weight:600;color:var(--white);line-height:1.35;margin-bottom:.75rem}
    .sc>p{font-size:.8rem;color:rgba(255,255,255,.42);line-height:1.7;flex:1;margin-bottom:1.2rem}
    .sc-find{background:rgba(255,255,255,.06);border-radius:8px;padding:.85rem 1rem;display:flex;align-items:center;gap:.85rem;margin-bottom:.9rem}
    .sf-n{font-family:var(--serif);font-size:1.7rem;font-weight:600;line-height:1;flex-shrink:0}
    .sf-n.nb{color:var(--red)}.sf-n.nd{color:#b8aaee}.sf-n.ng{color:var(--green)}.sf-n.nm{color:var(--amber)}
    .sf-t{font-size:.73rem;color:rgba(255,255,255,.36);line-height:1.5}
    .sc-tags{display:flex;gap:.4rem;flex-wrap:wrap}
    .st{font-size:.61rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:.22rem .6rem;border-radius:4px}
    .st-b{background:rgba(217,92,92,.15);color:var(--red)}
    .st-d{background:rgba(184,170,238,.15);color:#c4b8f5}
    .st-g{background:rgba(128,195,65,.15);color:var(--green)}
    .st-n{background:rgba(91,171,212,.12);color:var(--blue)}
    .st-m{background:rgba(224,125,74,.12);color:var(--amber)}
    .st-i{background:rgba(128,195,65,.1);color:#aade70}

    /* ── TECH SECTION (white bg) ── */
    .tech-intro{background:var(--purple-pale);padding:5rem 2.5rem}

    /* ── CTA ── */
    .cta{background:var(--purple);padding:6rem 2.5rem;text-align:center;position:relative;overflow:hidden}
    .cta::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 60% 70% at 50% 50%,rgba(128,195,65,.1) 0%,transparent 70%)}
    .cta h2{font-family:var(--serif);font-size:clamp(1.8rem,3.5vw,3rem);font-weight:500;color:var(--white);max-width:700px;margin:0 auto .9rem;line-height:1.2;position:relative}
    .cta h2 em{font-style:italic;color:var(--green)}
    .cta p{color:rgba(255,255,255,.5);font-size:.95rem;max-width:520px;margin:0 auto 2.5rem;line-height:1.75;position:relative}
    .cta .btns{justify-content:center;position:relative}

    /* ── FOOTER ── */
    .ft{background:var(--purple-dk);border-top:1px solid rgba(255,255,255,.08);padding:3.5rem 2.5rem}
    .ft-in{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:3rem;margin-bottom:3rem}
    .ft-brand img{height:32px;margin-bottom:1rem}
    .ft-brand p{font-size:.82rem;color:rgba(255,255,255,.35);line-height:1.65}
    .ft-brand a{color:rgba(255,255,255,.35);font-size:.82rem;margin-top:.5rem;display:inline-block}
    .ft-brand a:hover{color:var(--green)}
    .ft-col h5{font-size:.72rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.3);margin-bottom:1rem}
    .ft-col a{display:block;font-size:.84rem;color:rgba(255,255,255,.5);margin-bottom:.55rem}
    .ft-col a:hover{color:var(--white)}
    .ft-bot{max-width:1200px;margin:0 auto;padding-top:2rem;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;align-items:center;font-size:.74rem;color:rgba(255,255,255,.22);flex-wrap:wrap;gap:.5rem}
    .ft-bot a{color:rgba(255,255,255,.22)}.ft-bot a:hover{color:rgba(255,255,255,.5)}

    /* ── DIVIDER STRIP ── */
    .divider-strip{height:4px;background:linear-gradient(90deg,var(--purple) 0%,var(--green) 50%,var(--purple) 100%)}

    /* ── FADE UP ── */
    .fu{opacity:0;transform:translateY(22px);transition:opacity .65s ease,transform .65s ease}
    .fu.in{opacity:1;transform:none}
    .d1{transition-delay:.1s}.d2{transition-delay:.2s}.d3{transition-delay:.3s}

    /* ── RESPONSIVE ── */
    @media(max-width:960px){
      .split{grid-template-columns:1fr}
      .split.rev .mc{order:0}
      .icg{grid-template-columns:repeat(2,1fr)}
      .fb-in{grid-template-columns:repeat(2,1fr)}
      .fb-item:nth-child(2){border-right:none}
      .dpanel.on{grid-template-columns:1fr}
      .devg{grid-template-columns:1fr}
      .sg{grid-template-columns:repeat(2,1fr)}
      .ft-in{grid-template-columns:1fr 1fr}
    }
    @media(max-width:640px){
      .icg,.fb-in,.sg{grid-template-columns:1fr}
      .fb-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.08)}
      .nav-links{display:none}
      .stats-strip{flex-direction:column}
      .stat-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1)}
    }