/* RiverLIFE · публичен сайт · брандбук 2026 (River Mist / River Depth / Golden Current, Sofia Sans) */
@font-face{font-family:'Sofia Sans';src:url('/assets/fonts/SofiaSans.woff2') format('woff2');
  font-weight:1 1000;font-stretch:62.5% 100%;font-display:swap}

:root{
  --mist:#298096; --depth:#0C4C5B; --gold:#FAB268;
  --bg:#f4f8f9; --surface:#ffffff; --ink:#12333c; --ink-2:#4a6b74; --line:#dbe6e9;
  --head:#0C4C5B; --link:#1f6f83; --hero-a:#0C4C5B; --hero-b:#298096;
  --shadow:0 1px 2px rgba(12,76,91,.06),0 8px 24px rgba(12,76,91,.08);
  --r:14px; --w:1120px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0a1f25; --surface:#10303a; --ink:#e3eff2; --ink-2:#a9c4cb; --line:#1d4552;
  --head:#ffffff; --link:#7cc7d9; --hero-a:#06171c; --hero-b:#0C4C5B;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0a1f25; --surface:#10303a; --ink:#e3eff2; --ink-2:#a9c4cb; --line:#1d4552;
  --head:#ffffff; --link:#7cc7d9; --hero-a:#06171c; --hero-b:#0C4C5B;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25); color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:'Sofia Sans',system-ui,'Segoe UI',Roboto,sans-serif;
  font-weight:350;font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3{font-weight:900;line-height:1.12;letter-spacing:-.01em;color:var(--head);margin:0 0 .5em;overflow-wrap:anywhere}
h2{font-size:clamp(28px,4vw,40px)} h3{font-size:20px;font-weight:800}
p{margin:0 0 1em} a{color:var(--link)} a:hover{text-decoration-thickness:2px}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:var(--w);margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-999px;top:8px;background:var(--gold);color:#12333c;padding:8px 14px;border-radius:8px;z-index:99}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px;border-radius:4px}

/* ── шапка ── */
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--surface) 92%,transparent);
  backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:18px;height:64px}
.brand img{height:40px;width:auto}
.brand .w{display:none}
:root[data-theme="dark"] .brand .c{display:none} :root[data-theme="dark"] .brand .w{display:block}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .brand .c{display:none}
  :root:not([data-theme="light"]) .brand .w{display:block}}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{color:var(--ink);text-decoration:none;font-weight:600;font-size:15px;padding:8px 10px;border-radius:8px}
.nav a:hover{background:color-mix(in srgb,var(--mist) 12%,transparent)}
.tools{display:flex;align-items:center;gap:6px}
.lang{font-weight:800;font-size:14px;text-decoration:none;color:var(--ink);border:1px solid var(--line);border-radius:999px;padding:6px 11px}
.icon-btn{background:none;border:1px solid var(--line);color:var(--ink);border-radius:999px;width:36px;height:36px;
  display:grid;place-items:center;cursor:pointer}
.icon-btn svg{width:18px;height:18px}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--gold);color:#12333c;font-weight:800;text-decoration:none;
  border-radius:999px;padding:10px 18px;font-size:15px;white-space:nowrap;border:0}
.btn:hover{filter:brightness(1.05)}
.btn.ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.6)}
.menu{display:none}
@media (max-width:980px){
  .nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:var(--surface);
    border-bottom:1px solid var(--line);padding:8px 16px 14px}
  .nav.open{display:flex}
  .menu{display:grid;margin-left:auto}
  .tools .btn{display:none}
}

/* ── заглавна част ── */
.hero{background:linear-gradient(135deg,var(--hero-a) 0%,var(--hero-b) 100%);color:#fff;position:relative;overflow:hidden}
.hero .wrap{padding-top:clamp(48px,8vw,96px);padding-bottom:clamp(56px,8vw,104px);position:relative;z-index:1}
.hero .wave{position:absolute;right:-6%;bottom:-18%;width:min(760px,90vw);opacity:.16;filter:brightness(0) invert(1);z-index:0}
.eyebrow{font-weight:700;letter-spacing:.08em;text-transform:uppercase;font-size:13px;color:var(--gold);margin-bottom:14px}
.hero h1{color:#fff;font-size:clamp(34px,5.6vw,62px);max-width:17ch}
.hero .lead{font-size:clamp(18px,2vw,21px);max-width:58ch;color:#dbeef2;font-weight:350}
.hero .meta{display:flex;flex-wrap:wrap;gap:8px 20px;margin:22px 0 30px;font-size:15px;color:#cfe6ec}
.hero .meta b{color:#fff;font-weight:800}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px}

/* ── числа ── */
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-top:-44px;position:relative;z-index:2}
.stat{background:var(--surface);border-radius:var(--r);box-shadow:var(--shadow);padding:20px 18px;border:1px solid var(--line)}
.stat b{display:block;font-size:clamp(30px,3.6vw,42px);font-weight:900;color:var(--mist);line-height:1}
.stat span{display:block;font-size:14.5px;color:var(--ink-2);margin-top:8px;line-height:1.4}
@media (max-width:900px){.stats{grid-template-columns:repeat(2,1fr)} .stat:last-child{grid-column:span 2}}

/* ── раздели ── */
section{padding:clamp(56px,8vw,96px) 0}
.kicker{color:var(--mist);font-weight:800;letter-spacing:.06em;text-transform:uppercase;font-size:13px;margin-bottom:10px}
.intro{max-width:70ch;color:var(--ink-2);font-size:18px}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(24px,5vw,64px);align-items:start}
@media (max-width:860px){.split{grid-template-columns:1fr}}
.species{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--shadow)}
.species i{font-style:italic}
.species dl{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;margin:16px 0 0;font-size:15.5px}
.species dt{color:var(--ink-2)} .species dd{margin:0;font-weight:600}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:16px;margin-top:28px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow)}
.card .n{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:color-mix(in srgb,var(--mist) 16%,transparent);
  color:var(--mist);font-weight:900;margin-bottom:12px}
.card p{color:var(--ink-2);font-size:15.5px;margin:0}
.alt{background:color-mix(in srgb,var(--mist) 6%,var(--bg))}
.sites{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px;margin-top:24px;padding:0;list-style:none}
.sites li{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 16px;display:flex;justify-content:space-between;gap:12px}
.sites code{font-family:inherit;font-weight:800;color:var(--mist);font-size:14px;white-space:nowrap}
.partners{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:14px;margin-top:28px}
.partner{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;display:flex;gap:16px;align-items:center}
.partner .logo{flex:0 0 120px;height:72px;background:#fff;border-radius:10px;display:grid;place-items:center;padding:8px;border:1px solid #e6eef0}
.partner .logo img{max-height:56px;width:auto;object-fit:contain}
.partner .logo img.dark{filter:brightness(0) saturate(100%);opacity:.82}
.partner b{display:block;color:var(--head);line-height:1.3}
.partner span{display:block;font-size:14px;color:var(--ink-2);margin-top:3px}
.partner .role{color:var(--mist);font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:.04em}
.news{border:1px dashed var(--line);border-radius:var(--r);padding:26px;color:var(--ink-2);background:var(--surface)}

/* ── долна част ── */
footer{background:#0C4C5B;color:#d3e7ec;padding:48px 0 28px;font-size:15px}
footer a{color:#fff}
.funding{display:flex;flex-wrap:wrap;align-items:center;gap:18px;padding-bottom:26px;border-bottom:1px solid rgba(255,255,255,.15)}
.funding .tile{background:#fff;border-radius:10px;padding:10px;height:96px;display:grid;place-items:center}
.funding .tile img{max-height:76px;width:auto}
.funding .stmt{font-weight:800;color:#fff;font-size:18px}
.disclaimer{font-size:13.5px;line-height:1.55;color:#bcd6dd;max-width:90ch;margin:18px 0 26px}
.fgrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}
@media (max-width:760px){.fgrid{grid-template-columns:1fr}}
.fgrid h3{color:#fff;font-size:16px;margin-bottom:8px}
.fgrid ul{list-style:none;padding:0;margin:0} .fgrid li{margin:4px 0}
.copy{margin-top:28px;font-size:13px;color:#9dbfc8;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px}