:root{
  --bg:#0e0f12;
  --bg2:#15171c;
  --card:#191c22;
  --line:#262a32;
  --red:#e8352a;
  --red2:#ff4a3d;
  --txt:#eef0f3;
  --mut:#9aa0ab;
  --rad:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:'Inter',system-ui,Arial,sans-serif;
  background:var(--bg);color:var(--txt);line-height:1.55;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
h1,h2,h3{line-height:1.12;font-weight:800;letter-spacing:-.02em}

/* header */
.top{position:sticky;top:0;z-index:50;background:rgba(14,15,18,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top__in{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:900;font-size:22px;letter-spacing:-.03em}
.logo span{color:var(--red)}
.nav{display:flex;align-items:center;gap:26px}
.nav a{color:var(--mut);font-weight:600;font-size:15px;transition:.15s}
.nav a:hover{color:#fff}
.nav__cta{background:var(--red);color:#fff!important;padding:9px 18px;border-radius:10px}
.nav__cta:hover{background:var(--red2)}

/* buttons */
.btn{display:inline-block;font-weight:700;font-size:15px;padding:13px 26px;border-radius:11px;cursor:pointer;border:none;transition:.15s;text-align:center}
.btn--red{background:var(--red);color:#fff}
.btn--red:hover{background:var(--red2);transform:translateY(-1px)}
.btn--ghost{background:transparent;color:#fff;border:1px solid var(--line)}
.btn--ghost:hover{border-color:#fff}
.btn--sm{padding:9px 18px;font-size:14px}
.btn--full{width:100%}

/* hero */
.hero{background:linear-gradient(180deg,#0e0f12,#131519);border-bottom:1px solid var(--line);overflow:hidden}
.hero__in{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;padding:70px 20px}
.tag{display:inline-block;background:rgba(232,53,42,.14);color:var(--red2);font-weight:700;font-size:13px;padding:7px 14px;border-radius:30px;margin-bottom:20px;letter-spacing:.02em}
.hero h1{font-size:52px;font-weight:900;margin-bottom:18px}
.lead{color:var(--mut);font-size:18px;max-width:520px;margin-bottom:28px}
.hero__btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}
.stats{display:flex;gap:34px}
.stat b{display:block;font-size:30px;font-weight:900;color:#fff}
.stat span{color:var(--mut);font-size:14px}
.hero__img img{border-radius:18px;width:100%;aspect-ratio:4/5;object-fit:cover;border:1px solid var(--line)}

/* sections */
.section{padding:74px 0}
.section--alt{background:var(--bg2)}
.sec-head{margin-bottom:40px}
.sec-head h2{font-size:36px;margin-bottom:8px}
.sec-head p{color:var(--mut);font-size:17px}

.grid{display:grid;gap:22px}
.grid--3{grid-template-columns:repeat(3,1fr)}

/* program card */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--rad);overflow:hidden;display:flex;flex-direction:column;transition:.18s}
.card:hover{border-color:#3a3f4a;transform:translateY(-3px)}
.card__img{position:relative;aspect-ratio:16/10;overflow:hidden}
.card__img img{width:100%;height:100%;object-fit:cover}
.card__goal{position:absolute;top:12px;left:12px;background:var(--red);color:#fff;font-size:12px;font-weight:700;padding:5px 12px;border-radius:20px}
.card__body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.card__body h3{font-size:20px}
.card__descr{color:var(--mut);font-size:14.5px;flex:1}
.card__meta{display:flex;align-items:center;justify-content:space-between;font-size:14px;color:var(--mut)}
.card__meta b{color:#fff;font-size:19px}

/* calc */
.calc{display:grid;grid-template-columns:1.2fr .8fr;gap:26px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:30px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--mut);font-weight:600;margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;background:var(--bg);border:1px solid var(--line);color:#fff;border-radius:10px;padding:12px 14px;font:inherit;font-size:15px;outline:none;transition:.15s}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--red)}
.field-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.seg{display:flex;gap:8px}
.seg__btn{flex:1;background:var(--bg);border:1px solid var(--line);color:var(--mut);padding:12px;border-radius:10px;font:inherit;font-weight:600;cursor:pointer;transition:.15s}
.seg__btn.is-active{background:var(--red);color:#fff;border-color:var(--red)}
.calc__res{background:linear-gradient(160deg,#1d2028,#15171c);border:1px solid var(--line);border-radius:14px;padding:26px;display:flex;flex-direction:column;justify-content:center}
.calc__total{text-align:center;margin-bottom:20px}
.calc__total span{color:var(--mut);font-size:14px}
.calc__total b{display:block;font-size:52px;font-weight:900;color:var(--red2);line-height:1}
.calc__total small{color:var(--mut)}
.macros{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:22px}
.macro{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:12px 6px;text-align:center}
.macro span{display:block;font-size:12px;color:var(--mut)}
.macro b{display:block;font-size:24px;font-weight:800}
.macro small{color:var(--mut);font-size:12px}
.macro--p b{color:#4aa3ff}.macro--f b{color:#ffb84a}.macro--c b{color:#57d38a}

/* about */
.about{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:center}
.about__img img{border-radius:18px;width:100%;aspect-ratio:4/5;object-fit:cover;border:1px solid var(--line)}
.about__text h2{font-size:38px;margin-bottom:4px}
.about__role{color:var(--red2);font-weight:700;margin-bottom:16px}
.about__text p{color:var(--mut);margin-bottom:18px;font-size:16px}
.checks{list-style:none;margin:0 0 22px;display:flex;flex-direction:column;gap:10px}
.checks li{position:relative;padding-left:30px;color:#dfe2e7}
.checks li:before{content:"✓";position:absolute;left:0;top:0;width:20px;height:20px;background:var(--red);color:#fff;border-radius:50%;font-size:12px;display:flex;align-items:center;justify-content:center;font-weight:800}

/* review */
.review{background:var(--card);border:1px solid var(--line);border-radius:var(--rad);padding:24px;display:flex;flex-direction:column;gap:14px}
.review__stars{color:#ffb84a;font-size:16px;letter-spacing:2px}
.review__body{color:#dfe2e7;font-size:15.5px;flex:1}
.review__foot b{display:block}
.review__foot span{color:var(--red2);font-size:13px;font-weight:700}

/* signup */
.signup{background:linear-gradient(180deg,#131519,#0e0f12)}
.signup__in{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.signup__text h2{font-size:36px;margin-bottom:14px}
.signup__text p{color:var(--mut);font-size:17px;margin-bottom:22px}
.signup__form{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:30px}
.ok{background:rgba(87,211,138,.12);border:1px solid rgba(87,211,138,.4);color:#8ff0b6;padding:22px;border-radius:12px;text-align:center;font-weight:600}
.errbox{background:rgba(232,53,42,.12);border:1px solid rgba(232,53,42,.4);color:#ff9c95;padding:12px 16px;border-radius:10px;margin-bottom:16px}

/* footer */
.footer{background:#0a0b0d;border-top:1px solid var(--line);padding-top:44px}
.footer__in{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;padding-bottom:30px}
.footer__desc{color:var(--mut);margin-top:12px;max-width:340px}
.footer__contacts{display:flex;flex-direction:column;gap:8px;color:var(--mut)}
.footer__contacts a:hover{color:#fff}
.footer__copy{border-top:1px solid var(--line);padding:20px 20px;color:var(--mut);font-size:14px}

@media(max-width:900px){
  .hero__in,.about,.calc,.signup__in,.grid--3{grid-template-columns:1fr}
  .hero h1{font-size:38px}
  .hero__img{order:-1}
  .nav a:not(.nav__cta){display:none}
  .field-row{grid-template-columns:repeat(3,1fr)}
  .sec-head h2{font-size:28px}
}