:root{
  /* Палітра з фірмових SVG сайту */
  --blue:#0345BF;        /* logo */
  --yellow:#F5AC00;      /* logo */
  --sky:#1FA2FF;         /* hero.svg */
  --yellow-light:#FFE15A;/* hero.svg, yb-header.svg */
  --ink:#2C2404;         /* yb-header.svg */
  --text:#3a3a3a;
  --muted:#6b6b66;
  --bg:#ffffff;
  --bg-soft:#F6F8FE;
  --line:#E7E9EF;
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Source Sans 3',system-ui,sans-serif;color:var(--text);background:var(--bg);line-height:1.65}
h1,h2,h3,h4{font-family:'Montserrat',sans-serif;line-height:1.25;color:var(--ink)}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
ul{list-style-position:outside}
.container{max-width:1140px;margin:0 auto;padding:0 24px}

/* ---------- Header ---------- */
header.site{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:78px;gap:16px}
.logo img{height:48px;width:auto}
nav.main>ul{display:flex;gap:26px;list-style:none;align-items:center}
nav.main a{color:var(--ink);font-weight:600;font-size:15px;padding:8px 0;border-bottom:3px solid transparent;transition:border-color .2s}
nav.main a:hover{border-color:var(--yellow)}
nav.main li{position:relative}
nav.main li ul{display:none;position:absolute;top:100%;left:-14px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 24px rgba(3,69,191,.12);padding:8px 0;min-width:190px;list-style:none}
nav.main li:hover>ul,nav.main li:focus-within>ul{display:block}
nav.main li ul a{display:block;padding:9px 16px;border-bottom:none;font-weight:500}
nav.main li ul a:hover{background:var(--bg-soft);color:var(--blue)}
.header-right{display:flex;align-items:center;gap:14px}
.lang{display:flex;gap:6px}
.lang a{font-size:13px;font-weight:700;padding:4px 9px;border-radius:6px;border:1px solid var(--line);color:var(--muted)}
.lang a.active{background:var(--yellow);border-color:var(--yellow);color:var(--ink)}
.socials{display:flex;gap:10px}
.socials a{width:34px;height:34px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;transition:background .2s}
.socials a:hover{background:var(--sky)}
.burger{display:none;background:none;border:none;font-size:28px;cursor:pointer;color:var(--ink)}

/* ---------- Buttons ---------- */
.btn{display:inline-block;background:var(--yellow);color:var(--ink);font-weight:700;padding:14px 34px;border-radius:999px;font-size:16px;box-shadow:0 4px 14px rgba(245,172,0,.35);transition:background .2s,transform .2s;border:none;cursor:pointer}
.btn:hover{background:var(--yellow-light);transform:translateY(-2px)}
.btn.blue{background:var(--blue);color:#fff;box-shadow:0 4px 14px rgba(3,69,191,.3)}
.btn.blue:hover{background:var(--sky)}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(160deg,var(--bg-soft) 0%,#fff 55%,#FFF9E8 100%);padding:64px 0 56px}
.hero .container{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}
.hero .yb-title{max-width:430px;margin-bottom:24px}
.hero p{font-size:17.5px;margin-bottom:30px;max-width:56ch}
.hero-img img{width:100%}

/* ---------- Generic sections ---------- */
section{padding:70px 0}
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.eyebrow{color:var(--blue);font-weight:700;text-transform:uppercase;letter-spacing:.08em;font-size:13px;margin-bottom:10px}
h1.big{font-size:clamp(28px,4vw,44px);margin-bottom:4px}
h2.sub{font-size:clamp(20px,2.6vw,28px);color:var(--blue);margin-bottom:20px;font-weight:700}
.section-title{font-size:clamp(24px,3vw,34px);margin-bottom:16px}
.center{text-align:center}
.lead{color:var(--muted);max-width:72ch;margin:0 auto 44px}

/* ---------- Tasks ---------- */
.tasks{background:var(--blue);color:#fff}
.tasks .section-title,.tasks h3{color:#fff}
.tasks .lead{color:#cfe0ff}
.task-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.task{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);padding:26px 28px;transition:background .2s}
.task:hover{background:rgba(255,255,255,.14)}
.task h3{font-size:18px;margin-bottom:10px;padding-left:16px;border-left:4px solid var(--yellow)}
.task p{color:#dbe7ff;font-size:15px}

/* ---------- Who / How ---------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.two-col h3{font-size:22px;margin-bottom:14px;padding-bottom:10px;border-bottom:3px solid var(--yellow);display:inline-block}
.two-col p{margin-bottom:12px}

/* ---------- Donate ---------- */
.donate{background:var(--bg-soft)}
.tabs{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:32px}
.tabs button{font-family:'Montserrat',sans-serif;font-weight:700;font-size:15px;padding:10px 22px;border-radius:999px;border:2px solid var(--blue);background:#fff;color:var(--blue);cursor:pointer;transition:all .2s}
.tabs button:hover{background:#EAF1FF}
.tabs button.active{background:var(--blue);color:#fff}
.pane{display:none;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px 36px;max-width:820px;margin:0 auto;box-shadow:0 6px 20px rgba(3,69,191,.07)}
.pane.active{display:block}
.pane p{margin-bottom:8px}
.pane h4{margin:22px 0 10px;font-size:16px;color:var(--blue)}
.pane .crypto{font-family:monospace;font-size:15px;background:var(--bg-soft);padding:12px 16px;border-radius:8px;word-break:break-all;border:1px dashed var(--blue)}

/* ---------- Contacts ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.contact-list p{margin-bottom:12px}
.contact-list strong{color:var(--ink)}

/* ---------- Inner pages ---------- */
.page-head{background:linear-gradient(135deg,var(--blue) 0%,var(--sky) 100%);color:#fff;padding:56px 0 44px}
.page-head h1{color:#fff;font-size:clamp(26px,3.6vw,40px)}
.breadcrumbs{margin-top:10px;font-size:14px;color:#cfe0ff}
.breadcrumbs a{color:var(--yellow-light)}
article.content{padding:56px 0}
article.content .block{display:grid;grid-template-columns:1.15fr 1fr;gap:44px;align-items:center;margin-bottom:64px}
article.content .block:nth-child(even){direction:rtl}
article.content .block:nth-child(even)>*{direction:ltr}
article.content h3{font-size:clamp(19px,2.4vw,25px);margin-bottom:16px;padding-left:16px;border-left:5px solid var(--yellow)}
article.content p{margin-bottom:14px}
article.content ul{margin:0 0 14px 22px}
article.content li{margin-bottom:6px}
article.content img{border-radius:var(--radius);box-shadow:0 8px 24px rgba(44,36,4,.15)}
figure figcaption{font-size:13.5px;color:var(--muted);margin-top:10px;text-align:center}
.history .block{grid-template-columns:1fr}
.history figure{max-width:760px;margin:26px auto 40px}

/* ---------- Footer ---------- */
footer.site{background:var(--ink);color:#cfc9b8;padding:30px 0;font-size:14px}
footer.site .container{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
footer.site .socials a{background:rgba(255,255,255,.14)}
footer.site .socials a:hover{background:var(--yellow);color:var(--ink)}

/* ---------- Mobile ---------- */
@media (max-width:960px){
  .hero .container,.split,.two-col,.contact-grid{grid-template-columns:1fr}
  .hero-img{order:-1}
  article.content .block{grid-template-columns:1fr}
  article.content .block:nth-child(even){direction:ltr}
}
@media (max-width:760px){
  nav.main>ul{display:none;position:absolute;top:78px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 0;border-bottom:1px solid var(--line)}
  nav.main>ul.open{display:flex}
  nav.main>ul a{display:block;padding:13px 24px;border-bottom:none}
  nav.main li ul{display:block;position:static;border:none;box-shadow:none;padding:0 0 0 18px}
  .socials{display:none}
  .burger{display:block}
  .task-grid{grid-template-columns:1fr}
  .pane{padding:24px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important}
  html{scroll-behavior:auto}
}