/* Prototype B — "Clinical Evidence First": научная тёмно-синяя палитра, доказательства вперёд */
:root{
  --navy:#0b1f33; --navy-2:#122c45; --cyan:#03c4ef; --cyan-2:#42d3f0;
  --ink:#16222c; --muted:#5f7180; --bg:#ffffff; --bg-alt:#f2f7fa; --line:#dde7ee;
  --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:17px;line-height:1.65}
img{max-width:100%;height:auto;display:block}
a{color:var(--cyan);text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);font-weight:700;margin:0 0 14px}

/* header */
.hdr{position:sticky;top:0;z-index:50;background:rgba(11,31,51,.96);backdrop-filter:blur(6px)}
.hdr__in{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.hdr__logo img{width:160px}
.nav{display:flex;gap:24px;list-style:none;margin:0;padding:0;align-items:center}
.nav a{color:#e8f5fb;font-size:12.5px;letter-spacing:.09em;text-transform:uppercase;font-weight:600}
.nav a:hover{color:var(--cyan)}
.nav__sub{position:relative}
.nav__sub>a::after{content:"▾";margin-left:6px;font-size:10px;opacity:.7}
.nav__sub ul{display:none;position:absolute;left:-16px;top:100%;background:var(--navy-2);list-style:none;margin:0;padding:8px 0;min-width:250px;border-radius:0 0 10px 10px}
.nav__sub:hover ul,.nav__sub:focus-within ul{display:block}
.nav__sub ul a{display:block;padding:10px 20px;text-transform:none;letter-spacing:0;font-size:14px;font-weight:500}
.burger{display:none;background:none;border:0;color:#fff;font-size:24px;cursor:pointer}

/* hero */
.hero{position:relative;background:var(--navy);color:#fff;overflow:hidden}
.hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.45}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,31,51,.96) 35%,rgba(11,31,51,.55))}
.hero__in{position:relative;z-index:2;padding:110px 24px 80px;max-width:var(--maxw);margin:0 auto}
.hero h1{font-size:clamp(40px,6.4vw,72px);font-weight:300;margin:0 0 22px;letter-spacing:.01em}
.hero h1 sup{font-size:.34em;vertical-align:super}
.hero__claim{max-width:760px;font-size:clamp(15px,1.7vw,19px);letter-spacing:.05em;text-transform:uppercase;
  line-height:1.65;color:#cdeefb;margin:0 0 40px}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:14px 28px;border-radius:999px;font-size:13px;font-weight:700;
  letter-spacing:.12em;text-transform:uppercase}
.btn--p{background:var(--cyan);color:#062133}
.btn--s{border:1px solid rgba(255,255,255,.45);color:#fff}
.btn:hover{opacity:.88}

/* stats */
.stats{background:var(--navy-2);color:#fff;padding:0}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.12)}
.stat{background:var(--navy-2);padding:34px 26px}
.stat b{display:block;font-size:clamp(26px,3.2vw,38px);font-weight:600;color:var(--cyan-2);line-height:1.15;margin-bottom:10px}
.stat span{font-size:14px;color:#b9d2e2;line-height:1.5}
.stats__note{background:var(--navy);color:#fff;text-align:center;padding:22px 24px;
  font-size:clamp(13px,1.5vw,16px);letter-spacing:.14em;text-transform:uppercase;font-weight:600}

section{padding:88px 0}
.alt{background:var(--bg-alt)}
h2{font-size:clamp(25px,3.2vw,36px);font-weight:500;margin:0 0 28px;letter-spacing:.01em}
h2 sup{font-size:.4em;vertical-align:super}
.mission{display:grid;grid-template-columns:320px 1fr;gap:56px;align-items:start}
.mission p{margin:0 0 20px;text-align:justify}
.mission__side{position:sticky;top:104px}
.mission__side h2{margin:0}
.rule{width:56px;height:3px;background:var(--cyan);margin:18px 0 0}

/* solutions */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:34px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(11,31,51,.12)}
.card__img{background:var(--bg-alt);padding:26px;display:flex;justify-content:center}
.card__img img{width:150px;border-radius:8px}
.card__b{padding:24px 26px 28px}
.card__b p{margin:0;font-size:16px}
.card__n{font-size:12px;letter-spacing:.18em;color:var(--cyan);font-weight:700;display:block;margin-bottom:10px}

/* evidence */
.evi{background:var(--navy);color:#fff}
.evi h2{color:#fff}
.evi__grid{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center}
.evi p{color:#cfe3f0;margin:0 0 18px;text-align:justify}
.evi__box{background:var(--navy-2);border-left:3px solid var(--cyan);padding:32px 34px;border-radius:0 12px 12px 0}
.evi__box p:last-child{margin:0}

/* audience */
.cols{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.box{background:#fff;border:1px solid var(--line);border-radius:14px;padding:40px}
.box h3{margin:0 0 16px;font-size:21px;font-weight:600}
.box p{margin:0;text-align:justify;color:#31434f}

/* footer */
.ftr{background:var(--navy);color:#b9d2e2;padding:56px 0 30px;font-size:15px}
.ftr__in{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:30px}
.ftr a{color:var(--cyan-2)}
.ftr img{width:150px;margin-bottom:18px;opacity:.95}
.ftr__cr{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#7e97a8}

@media(max-width:980px){
  .burger{display:block}
  .nav{display:none;position:absolute;left:0;right:0;top:72px;background:var(--navy-2);
    flex-direction:column;align-items:flex-start;gap:0;padding:12px 24px 20px}
  .nav.open{display:flex}
  .nav>li{width:100%;padding:10px 0}
  .nav__sub ul{display:block;position:static;padding:6px 0 0 14px}
  .stats__grid{grid-template-columns:1fr 1fr}
  .mission,.evi__grid,.cards,.cols,.ftr__in{grid-template-columns:1fr;gap:28px}
  .mission__side{position:static}
  section{padding:56px 0}
}