/* =====================================================
   AiBrain × РЭУ — Design System v3 (HSE-inspired)
   Font: Inter (body + headings)
   ===================================================== */

/* Variables */
:root {
  --bg:           #010c27;
  --bg-light:     #143772;
  --bg-light-card: rgba(255,255,255,0.08);
  --bg-white:     rgba(229,239,248,0.51);
  --card:         #ffffff;
  --card-hover:   #f5f9fd;
  --primary:      #1955a6;
  --primary-dark: #002e6e;
  --green:        #6ede3b;
  --green-dim:    rgba(110,222,59,0.12);
  --orange:       #eb691f;
  --text:         #002e6e;
  --text-2:       #4d6d99;
  --text-3:       #8ba3c4;
  --text-white:   #e5eff8;
  --border:       rgba(0,46,110,0.1);
  --border-hover: rgba(25,85,166,0.25);
  --radius:       10px;
  --radius-lg:    16px;
  --max-w:        1180px;
  --ease:         cubic-bezier(0.22,1,0.36,1);
}

/* Reset */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',sans-serif;
  background:var(--bg-white);
  color:var(--text);
  overflow-x:hidden;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::-webkit-scrollbar{width:4px}
::-webkit-scrollbar-track{background:var(--bg-white)}
::-webkit-scrollbar-thumb{background:var(--primary);border-radius:2px}

/* Canvas */
#neural-bg{display:none}

.page{position:relative;z-index:1}
.wrap{max-width:var(--max-w);margin:0 auto;padding:0 28px}

/* =====================
   Typography
   ===================== */
.t-display{
  font-family:'Inter',sans-serif;
  font-size:clamp(2.6rem,6.5vw,5rem);
  font-weight:800;line-height:1.05;letter-spacing:-0.03em;
}
.t-h1{
  font-family:'Inter',sans-serif;
  font-size:clamp(1.8rem,4vw,2.8rem);
  font-weight:800;line-height:1.1;letter-spacing:-0.025em;
}
.t-h2{
  font-family:'Inter',sans-serif;
  font-size:clamp(1.5rem,3vw,2.2rem);
  font-weight:700;line-height:1.15;letter-spacing:-0.02em;
}
.t-h3{
  font-family:'Inter',sans-serif;
  font-size:clamp(1rem,1.6vw,1.25rem);
  font-weight:700;letter-spacing:-0.01em;
}
.t-grad{color:var(--green);background:none;-webkit-text-fill-color:var(--green)}

/* =====================
   Buttons
   ===================== */
.btn{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:'Inter',sans-serif;
  font-weight:600;font-size:.88rem;letter-spacing:.02em;
  padding:.85rem 2rem;border-radius:var(--radius);border:none;cursor:pointer;
  transition:transform .2s var(--ease), box-shadow .2s, background .2s, color .2s;
}
.btn-primary{
  background:var(--primary);color:#fff;
  box-shadow:0 4px 20px rgba(25,85,166,0.2);
  position:relative;overflow:hidden;
}
.btn-primary::after{content:none}
.btn-primary:hover{transform:translateY(-2px);background:#1260b8;box-shadow:0 8px 32px rgba(25,85,166,0.3)}
.btn-primary:active{transform:translateY(0) scale(0.98);transition:transform 0.1s}
.btn-primary span{position:relative;z-index:1}
.btn-lg{padding:1rem 2.6rem;font-size:.95rem}

/* =====================
   Navigation
   ===================== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:200;
  padding:.9rem 0;
  background:rgba(1,12,39,0.6);
  backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(229,239,248,0.06);
  transition:background .3s;
}
.nav.scrolled{background:rgba(1,12,39,0.95)}
.nav__inner{
  display:flex;align-items:center;justify-content:space-between;
  max-width:var(--max-w);margin:0 auto;padding:0 28px;
}
.nav__logo{
  display:flex;align-items:center;gap:.6rem;
  font-family:'Inter',sans-serif;font-weight:700;font-size:1rem;color:var(--text-white);
  line-height:1;
}
.nav__logo-img{height:18px;width:auto}
.nav__sep{color:rgba(229,239,248,0.3);margin:0 .3rem;font-size:.9rem;line-height:1}
.nav__reu-img{height:38px;width:auto;filter:brightness(0) invert(1);opacity:0.7}
.nav__uni{font-size:.9rem;color:rgba(229,239,248,0.55);font-weight:400;line-height:1}
.nav__links{display:flex;align-items:center;gap:2rem}
.nav__link{
  font-size:.88rem;font-weight:500;color:rgba(229,239,248,0.7);
  transition:color .2s;
}
.nav__link:hover{color:var(--green)}
.nav .btn-primary{
  background:rgba(229,239,248,0.08);box-shadow:none;
  font-size:.82rem;padding:.6rem 1.4rem;border:1px solid rgba(229,239,248,0.12);
}
.nav .btn-primary:hover{background:rgba(229,239,248,0.15)}

/* =====================
   HERO — asymmetric
   ===================== */
.hero{
  min-height:100vh;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:7rem 28px 4rem;
  background:url('../img/hero-bg.jpg') center/cover no-repeat;
  color:var(--text-white);position:relative;overflow:hidden;
}
.hero::before{
  content:'';position:absolute;inset:0;z-index:0;
  background:linear-gradient(180deg, rgba(1,12,39,0.82) 0%, rgba(6,30,66,0.78) 60%, #143772 100%);
}
.hero__inner{position:relative;z-index:2}
.hero__scroll{z-index:2}
.hero__inner{
  display:grid;grid-template-columns:1fr 380px;gap:4rem;
  align-items:center;max-width:var(--max-w);width:100%;
}
.hero__left{display:flex;flex-direction:column;align-items:flex-start;gap:1.5rem}
.hero__left .t-display{text-align:left;color:var(--text-white)}
.hero__desc{font-size:1.05rem;color:rgba(229,239,248,0.65);line-height:1.75;max-width:520px}
.hero .btn-primary{
  background:var(--green);color:#002e6e;font-weight:700;
  box-shadow:0 4px 24px rgba(110,222,59,0.25);border:none;
}
.hero .btn-primary:hover{background:#7de84f;box-shadow:0 8px 36px rgba(110,222,59,0.35)}

/* Hero card */
.hero__right{display:flex;align-items:center;justify-content:flex-end}
.hero__card{
  background:rgba(229,239,248,0.06);
  backdrop-filter:blur(20px);
  border:1px solid rgba(229,239,248,0.1);
  border-radius:var(--radius-lg);
  padding:2rem 2.2rem;width:100%;
  display:flex;flex-direction:column;gap:0;
}
.hero__card-row{display:flex;align-items:center;gap:1rem;padding:.8rem 0}
.hero__card-num{
  font-size:2.8rem;font-weight:800;color:var(--green);line-height:1;
  min-width:60px;
}
.hero__card-label{font-size:.82rem;color:rgba(229,239,248,0.6);line-height:1.35}
.hero__card-sep{height:1px;background:rgba(229,239,248,0.1)}
.hero__card-item{
  padding:.9rem 0;font-size:.9rem;color:rgba(229,239,248,0.75);font-weight:500;
}
.hero__scroll{
  position:absolute;bottom:2rem;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:.5rem;
  color:rgba(229,239,248,0.3);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;
}
.hero__scroll-line{
  width:1px;height:36px;
  background:linear-gradient(180deg,var(--green),transparent);
  animation:scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine{0%,100%{opacity:.3;transform:scaleY(1)}50%{opacity:1;transform:scaleY(0.5)}}

/* =====================
   Section common
   ===================== */
.section-sep{display:none}
section{position:relative;z-index:1}
.sec-head{text-align:center;margin-bottom:2.5rem}
.sec-head .t-h1,.sec-head .t-h2{max-width:780px;margin:0 auto}

/* =====================
   FOR WHOM — title left, cards right
   ===================== */
.for-whom{padding:5rem 0;background:var(--bg-white)}
.for-whom__layout{display:grid;grid-template-columns:300px 1fr;gap:3rem;align-items:start}
.for-whom__text .t-h1{text-align:left;margin-bottom:0}
.for-whom__grid{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem}
.for-whom__card{
  padding:2rem 1.8rem;border-radius:var(--radius);
  background:#e8f0f8;border:1px solid rgba(0,46,110,0.08);
  transition:transform .3s var(--ease),box-shadow .3s,border-color .2s;
}
.for-whom__card::before{content:none}
.for-whom__card:hover{transform:translateY(-3px);box-shadow:0 12px 36px rgba(0,46,110,0.07);border-color:var(--border-hover)}
.for-whom__card--2:hover{box-shadow:0 12px 36px rgba(0,46,110,0.07);border-color:var(--border-hover)}
.for-whom__num{display:none}
.for-whom__card > *{position:relative;z-index:1}
.for-whom__tag{
  display:inline-block;padding:.25rem .8rem;
  background:var(--green-dim);border:1px solid rgba(110,222,59,0.18);
  border-radius:100px;font-size:.7rem;font-weight:700;
  color:#3aad10;text-transform:uppercase;letter-spacing:.08em;margin-bottom:1rem;
}
/* card--2 uses same style as card-1 */
.for-whom__card h3{margin-bottom:.75rem;color:var(--primary-dark)}
.for-whom__card p{color:var(--text-2);line-height:1.7;font-size:.9rem}

/* =====================
   INTRO VIDEO — text left, video right
   ===================== */
.intro-video{padding:5rem 0;background:var(--bg-light);color:#fff}
.intro-video__layout{display:grid;grid-template-columns:1fr 1.5fr;gap:3rem;align-items:center}
.intro-video__text .t-h2{text-align:left;margin-bottom:1rem;color:#fff}
.intro-video__text p{color:rgba(255,255,255,0.7);line-height:1.75;font-size:.95rem}
.intro-video__player{
  position:relative;padding-top:56.25%;
  border-radius:var(--radius);overflow:hidden;
  box-shadow:0 8px 40px rgba(0,46,110,0.1);
}
.intro-video__player iframe{position:absolute;inset:0;width:100%;height:100%;border:none}

/* =====================
   PROGRAM — left-aligned header
   ===================== */
.program{padding:5rem 0;background:var(--bg-white)}
.program__header{margin-bottom:2.5rem}
.program__header .t-h1{text-align:left}
.program__desc{color:var(--text-2);font-size:.95rem;margin-top:.5rem;text-align:left}
.accordion{max-width:100%;display:flex;flex-direction:column;gap:.5rem}
.acc{
  border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
  background:var(--card);transition:border-color .2s,box-shadow .2s;
}
.acc.open{border-color:var(--border-hover);box-shadow:0 4px 16px rgba(0,46,110,0.05)}
.acc__trigger{
  display:flex;align-items:center;gap:1.2rem;padding:1.1rem 1.4rem;
  cursor:pointer;background:var(--card);transition:background .2s;user-select:none;
}
.acc__trigger:hover{background:var(--card-hover)}
.acc__hours{
  flex-shrink:0;width:48px;height:48px;border-radius:var(--radius);
  background:var(--primary);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  font-family:'Inter',sans-serif;font-size:1rem;font-weight:800;color:#fff;line-height:1;
}
.acc__hours em{font-size:.52rem;font-style:normal;font-weight:500;opacity:.8;margin-top:1px}
.acc__name{flex:1;font-weight:600;font-size:.93rem;color:var(--primary-dark)}
.acc__arrow{
  width:26px;height:26px;border-radius:6px;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;font-size:.7rem;
  color:var(--text-3);transition:transform .3s var(--ease),border-color .2s,color .2s;
}
.acc.open .acc__arrow{transform:rotate(180deg);border-color:var(--primary);color:var(--primary)}
.acc__body{max-height:0;overflow:hidden;opacity:0;transition:max-height .4s var(--ease),opacity .3s}
.acc__inner{
  padding:1rem 1.4rem 1.25rem 4.5rem;border-top:1px solid var(--border);
  color:var(--text-2);font-size:.88rem;line-height:1.75;
}

/* =====================
   FEATURED TEACHER
   ===================== */
.featured-teacher{padding:5rem 0;background:var(--bg-light);color:#fff}
.featured-teacher__card{
  display:grid;grid-template-columns:320px 1fr;gap:0;
  border-radius:var(--radius);overflow:hidden;
  background:var(--card);box-shadow:0 8px 36px rgba(0,0,0,0.15);
}
.featured-teacher__card::before{content:none}
.featured-teacher__photo{
  background:#e8f0f8;display:flex;align-items:center;justify-content:center;
  min-height:420px;overflow:hidden;
}
.featured-teacher__photo img{width:100%;height:100%;object-fit:cover}
.featured-teacher__avatar{font-size:6rem;font-weight:800;color:var(--primary);opacity:.12}
.featured-teacher__content{padding:2.5rem}
.featured-teacher__badge{
  display:inline-block;padding:.3rem .9rem;
  background:var(--green-dim);border:1px solid rgba(110,222,59,0.18);
  border-radius:100px;font-size:.7rem;font-weight:700;
  color:#3aad10;text-transform:uppercase;letter-spacing:.08em;margin-bottom:1rem;
}
.featured-teacher__name{font-size:1.8rem;font-weight:800;letter-spacing:-.02em;margin-bottom:.4rem;color:var(--primary-dark)}
.featured-teacher__role{color:var(--primary);font-weight:600;font-size:.85rem;margin-bottom:1.25rem;line-height:1.5}
.featured-teacher__bio{color:var(--text-2);line-height:1.75;font-size:.9rem;margin-bottom:1.5rem}
.featured-teacher__articles{display:flex;flex-wrap:wrap;gap:.5rem}
.article-btn{
  padding:.35rem .9rem;background:#e8f0f8;border:1px solid rgba(0,46,110,0.08);
  border-radius:8px;font-size:.75rem;font-weight:600;color:var(--text-2);
  transition:border-color .2s,color .2s,background .2s;cursor:pointer;
}
.article-btn:hover{border-color:var(--primary);color:var(--primary);background:rgba(25,85,166,0.04)}

/* =====================
   SPEAKERS — grid
   ===================== */
.speakers{padding:5rem 0;background:var(--bg-white)}
.speakers__grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;
}
.speaker-card{
  padding:1.8rem;background:#e8f0f8;border:1px solid rgba(0,46,110,0.08);
  border-radius:var(--radius);transition:transform .3s var(--ease),border-color .2s,box-shadow .3s;
}
.speaker-card:hover{transform:translateY(-3px);border-color:var(--border-hover);box-shadow:0 10px 30px rgba(0,46,110,0.06)}
.speaker-card__photo{
  width:56px;height:56px;border-radius:50%;background:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:1.3rem;font-weight:800;color:#fff;margin-bottom:1rem;overflow:hidden;
}
.speaker-card__photo img{width:100%;height:100%;object-fit:cover}
.speaker-card__name{font-weight:700;font-size:1rem;margin-bottom:.3rem;color:var(--primary-dark)}
.speaker-card__role{font-size:.78rem;color:var(--primary);font-weight:600;margin-bottom:.75rem;line-height:1.4}
.speaker-card__bio{font-size:.82rem;color:var(--text-2);line-height:1.65}

/* =====================
   PROJECT / CASES
   ===================== */
.project{padding:5rem 0;background:var(--bg-light);color:#fff;overflow:hidden}
.project__desc{
  max-width:680px;margin:1rem auto 3rem;font-size:1rem;
  color:rgba(255,255,255,0.7);text-align:center;line-height:1.75;
}
.cases__header{
  display:flex;align-items:flex-start;justify-content:space-between;gap:2rem;
  margin-bottom:2rem;
}
.cases__header .t-h1{text-align:left}
.cases__nav{display:flex;gap:.5rem;margin-top:.5rem}
.cases__btn{
  width:40px;height:40px;border-radius:50%;
  background:rgba(255,255,255,0.1);border:1px solid rgba(255,255,255,0.2);
  color:#fff;font-size:.95rem;cursor:pointer;
  transition:border-color .2s,background .2s;
  display:flex;align-items:center;justify-content:center;
}
.cases__btn:hover{background:rgba(255,255,255,0.18);border-color:rgba(255,255,255,0.35)}
.cases__track-wrap{max-width:var(--max-w);margin:0 auto;padding:0 28px}
.project > .wrap{position:relative}
.project > .wrap::before,.project > .wrap::after{
  content:'';position:absolute;top:0;bottom:0;width:60px;z-index:2;pointer-events:none;
}
.project > .wrap::before{
  left:0;
  background:linear-gradient(to right, var(--bg-light), transparent);
}
.project > .wrap::after{
  right:0;
  background:linear-gradient(to left, var(--bg-light), transparent);
}
.cases__track{
  display:flex!important;flex-wrap:nowrap!important;gap:1.25rem;
  overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:1rem;
  scrollbar-width:thin;scrollbar-color:rgba(255,255,255,0.2) transparent;
  -webkit-overflow-scrolling:touch;
}
.cases__track::-webkit-scrollbar{height:4px}
.cases__track::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.25);border-radius:2px}
.case-card{
  flex:0 0 320px!important;min-width:320px;scroll-snap-align:start;
  height:340px;
  padding:1.5rem;border-radius:var(--radius);background:var(--card);border:1px solid rgba(0,46,110,0.08);
  display:flex;flex-direction:column;
  transition:transform .3s var(--ease),box-shadow .3s;
}
.case-card:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(0,0,0,0.15)}
.case-card__top{display:flex;align-items:center;gap:1rem;margin-bottom:1rem;flex-shrink:0}
.case-card__photo{
  width:48px;height:48px;border-radius:50%;background:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:1.1rem;font-weight:800;color:#fff;overflow:hidden;flex-shrink:0;
}
.case-card__photo img{width:100%;height:100%;object-fit:cover}
.case-card__name{font-weight:700;font-size:.92rem;color:var(--primary-dark)}
.case-card__role{font-size:.75rem;color:var(--text-3);margin-top:.15rem}
.case-card__text-wrap{
  flex:1;overflow-y:auto;
  scrollbar-width:thin;scrollbar-color:rgba(0,46,110,0.15) transparent;
}
.case-card__text-wrap::-webkit-scrollbar{width:3px}
.case-card__text-wrap::-webkit-scrollbar-thumb{background:rgba(0,46,110,0.15);border-radius:2px}
.case-card__text{font-size:.85rem;color:var(--text-2);line-height:1.65;margin:0}

/* =====================
   PRICING — left info, right features
   ===================== */
.pricing{padding:5rem 0;background:var(--bg-white)}
.pricing__layout{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
.pricing__info .t-h1{text-align:left;margin-bottom:1rem}
.pricing__price{
  font-size:clamp(2.5rem,5vw,4rem);font-weight:800;letter-spacing:-.02em;
  color:var(--primary-dark);margin-bottom:.3rem;
}
.pricing__sub{font-size:1rem;color:var(--text-2);margin-bottom:2rem}
.pricing__sub strong{color:var(--primary-dark)}
.pricing__note{font-size:.8rem;color:var(--text-3);margin-top:1rem}
.pricing__info .btn-primary{background:var(--green);color:#002e6e;box-shadow:0 4px 24px rgba(110,222,59,0.25)}
.pricing__info .btn-primary:hover{background:#7de84f;box-shadow:0 8px 36px rgba(110,222,59,0.35)}
.pricing__features{display:flex;flex-direction:column;gap:1rem}
.pricing__feature{
  display:flex;align-items:flex-start;gap:1rem;
  padding:1.2rem 1.4rem;border-radius:var(--radius);
  background:#e8f0f8;border:1px solid rgba(0,46,110,0.08);
}
.pricing__feature-icon{font-size:1.5rem;flex-shrink:0;margin-top:.1rem}
.pricing__feature-title{font-weight:700;font-size:.92rem;color:var(--primary-dark);margin-bottom:.15rem}
.pricing__feature-text{font-size:.82rem;color:var(--text-2);line-height:1.5}

/* =====================
   VIDEO CAROUSEL — horizontal scroll
   ===================== */
.videos{padding:5rem 0;background:var(--bg-light);overflow:hidden;color:#fff}
.videos__header{
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:2rem;
}
.videos__header .t-h2{margin:0}
.videos__nav{display:flex;gap:.5rem}
.videos__btn{
  width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,0.1);border:1px solid rgba(255,255,255,0.2);
  color:var(--text);font-size:.95rem;cursor:pointer;
  transition:border-color .2s,background .2s;display:flex;align-items:center;justify-content:center;
}
.videos__btn:hover{border-color:var(--primary);background:rgba(25,85,166,0.05)}
.videos__track-wrap{
  max-width:var(--max-w);margin:0 auto;padding:0 28px;
}
.videos__track{
  display:flex;gap:1.25rem;
  overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:1rem;
  scrollbar-width:thin;scrollbar-color:var(--primary) transparent;
  -webkit-overflow-scrolling:touch;
}
.videos__track::-webkit-scrollbar{height:4px}
.videos__track::-webkit-scrollbar-thumb{background:var(--primary);border-radius:2px}
.videos__card{
  flex:0 0 400px;scroll-snap-align:start;
  background:var(--card);border:1px solid rgba(0,46,110,0.08);border-radius:var(--radius);
  overflow:hidden;transition:border-color .2s,box-shadow .3s,transform .3s var(--ease);
}
.videos__card:hover{border-color:var(--border-hover);box-shadow:0 10px 30px rgba(0,0,0,0.15);transform:translateY(-2px)}
.videos__embed{position:relative;padding-top:56.25%;background:#000}
.videos__embed iframe{position:absolute;inset:0;width:100%;height:100%;border:none}
.videos__card-info{padding:1rem 1.25rem}
.videos__card-info h3{font-weight:700;font-size:.95rem;color:var(--primary-dark);margin-bottom:.2rem}
.videos__card-info p{color:var(--text-2);font-size:.82rem;line-height:1.5}

/* =====================
   DIPLOMA — text left, card right
   ===================== */
.diploma{padding:5rem 0;background:var(--bg-white)}
.diploma__layout{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.diploma__text .t-h2{text-align:left;margin-bottom:1rem}
.diploma__text p{color:var(--text-2);line-height:1.75;font-size:.95rem}
.diploma__frame{perspective:1200px}
.diploma__card{
  padding:3rem 2.5rem;text-align:center;border-radius:var(--radius-lg);
  background:var(--card);border:1px solid var(--border);
  box-shadow:0 8px 36px rgba(0,46,110,0.07);
  transform-style:preserve-3d;transition:transform .1s ease;
  position:relative;overflow:hidden;
}
.diploma__card::before{
  content:'';position:absolute;inset:8px;
  border:1px solid rgba(25,85,166,0.06);border-radius:10px;pointer-events:none;
}
.diploma__card::after{content:none}
.diploma__seal{
  width:64px;height:64px;border-radius:50%;background:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:2rem;margin:0 auto 1.5rem;
}
.diploma__uni{font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--primary);font-weight:700;margin-bottom:.6rem}
.diploma__type{font-size:1.3rem;font-weight:800;letter-spacing:-.02em;margin-bottom:.4rem;color:var(--primary-dark)}
.diploma__prog{color:var(--text-2);font-size:.88rem;line-height:1.55;margin-bottom:1.5rem}
.diploma__line{width:80px;height:2px;background:var(--primary);margin:0 auto 1.5rem;border-radius:1px}
.diploma__hours{font-size:.82rem;color:var(--text-3)}
.diploma__hours strong{color:var(--primary);font-size:.95rem}
.diploma__img{
  width:100%;border-radius:var(--radius);
  box-shadow:0 8px 36px rgba(0,46,110,0.08);
  transform-style:preserve-3d;transition:transform .1s ease;
}

/* =====================
   FAQ — title left, accordion right
   ===================== */
.faq{padding:5rem 0;background:var(--bg-light);color:#fff}
.faq__layout{display:grid;grid-template-columns:300px 1fr;gap:3rem;align-items:start}
.faq__left .t-h1{text-align:left;margin-bottom:1rem;color:#fff}
.faq__left p{color:rgba(255,255,255,0.6);font-size:.9rem;line-height:1.6}
.faq__list{display:flex;flex-direction:column;gap:.5rem}
.faq-item{
  background:var(--card);border:1px solid rgba(0,46,110,0.08);border-radius:var(--radius);
  overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-item.open{border-color:var(--border-hover);box-shadow:0 4px 16px rgba(0,0,0,0.1)}
.faq-item__q{
  padding:1.1rem 1.4rem;font-weight:600;font-size:.93rem;color:var(--primary-dark);
  cursor:pointer;user-select:none;display:flex;align-items:center;justify-content:space-between;
  transition:background .2s;
}
.faq-item__q:hover{background:var(--card-hover)}
.faq-item__q::after{
  content:'▼';font-size:.65rem;color:var(--text-3);
  transition:transform .3s var(--ease),color .2s;flex-shrink:0;margin-left:1rem;
}
.faq-item.open .faq-item__q::after{transform:rotate(180deg);color:var(--primary)}
.faq-item__a{
  max-height:0;overflow:hidden;opacity:0;
  transition:max-height .4s var(--ease),opacity .3s,padding .3s;
  padding:0 1.4rem;color:var(--text-2);font-size:.88rem;line-height:1.75;
  border-top:0 solid var(--border);
}
.faq-item.open .faq-item__a{
  max-height:300px;opacity:1;padding:1rem 1.4rem 1.25rem;
  border-top:1px solid var(--border);
}

/* =====================
   FOOTER
   ===================== */
.footer{padding:2.5rem 0;border-top:1px solid var(--border);background:var(--bg-white)}
.footer__inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1.5rem}
.footer__logo{display:flex;align-items:center}
.footer__logo-img{height:20px;width:auto;filter:brightness(0) saturate(100%) invert(16%) sepia(60%) saturate(1800%) hue-rotate(205deg) brightness(0.6)}
.footer__links{display:flex;gap:1.5rem;list-style:none}
.footer__links a{font-size:.78rem;color:var(--text-3);transition:color .2s}
.footer__links a:hover{color:var(--primary)}
.footer__socials{display:flex;gap:.5rem}
.footer__soc{
  width:34px;height:34px;border-radius:8px;
  background:#e8f0f8;border:1px solid rgba(0,46,110,0.08);
  display:flex;align-items:center;justify-content:center;font-size:.9rem;
  transition:border-color .2s,background .2s;
}
.footer__soc:hover{border-color:var(--primary);background:rgba(25,85,166,0.05)}
.footer__soc-icon{width:18px;height:18px;object-fit:contain}
.footer__copy{font-size:.75rem;color:var(--text-3);width:100%}
.footer__rea-link{font-size:.7rem;color:var(--text-3);opacity:.5;transition:opacity .2s}
.footer__rea-link:hover{opacity:1;color:var(--primary)}

/* =====================
   Scroll Animations
   ===================== */
[data-anim]{opacity:0;transition:opacity .6s var(--ease),transform .6s var(--ease)}
[data-anim="up"]{transform:translateY(28px)}
[data-anim="left"]{transform:translateX(-28px)}
[data-anim="right"]{transform:translateX(28px)}
[data-anim="scale"]{transform:scale(.95)}
[data-anim="fade"]{transform:none}
[data-anim].visible{opacity:1;transform:none!important}

/* =====================
   Responsive
   ===================== */
/* ── Tablet ── */
@media(max-width:960px){
  .hero__inner{grid-template-columns:1fr;gap:2rem;text-align:center}
  .hero__left{align-items:center}
  .hero__left .t-display{text-align:center}
  .hero__right{justify-content:center}
  .hero__card{max-width:400px}
  .for-whom__layout{grid-template-columns:1fr}
  .for-whom__text .t-h1{text-align:center;margin-bottom:1.5rem}
  .intro-video__layout{grid-template-columns:1fr}
  .intro-video__text{text-align:center;margin-bottom:1.5rem}
  .intro-video__text .t-h2{text-align:center}
  .program__header .t-h1{text-align:center}
  .program__desc{text-align:center}
  .featured-teacher__card{grid-template-columns:1fr}
  .featured-teacher__photo{min-height:260px}
  .speakers__grid{grid-template-columns:1fr 1fr}
  .pricing__layout{grid-template-columns:1fr}
  .pricing__info{text-align:center}
  .pricing__info .t-h1{text-align:center}
  .diploma__layout{grid-template-columns:1fr}
  .diploma__text{text-align:center;margin-bottom:2rem}
  .diploma__text .t-h2{text-align:center}
  .faq__layout{grid-template-columns:1fr}
  .faq__left{text-align:center;margin-bottom:1.5rem}
  .faq__left .t-h1{text-align:center}
  .footer__inner{flex-direction:column;align-items:flex-start}
  .videos__card{flex:0 0 320px}
}

/* ── Mobile ── */
@media(max-width:600px){
  /* Typography */
  .t-display{font-size:2rem}
  .t-h1{font-size:1.6rem}
  .t-h2{font-size:1.35rem}

  /* Layout */
  .wrap{padding:0 16px}
  .hero{padding:6rem 16px 3rem}

  /* Nav — compact */
  .nav__inner{padding:0 16px}
  .nav__links{gap:.8rem}
  .nav__link{display:none}
  .nav__logo{gap:.4rem}
  .nav__logo-img{height:14px}
  .nav__sep{font-size:.7rem;margin:0 .15rem}
  .nav__uni{font-size:.68rem}
  .nav .btn-primary{font-size:.72rem;padding:.5rem 1rem}

  /* Hero */
  .hero__inner{gap:1.5rem}
  .hero__card{padding:1.5rem}
  .hero__card-num{font-size:2rem;min-width:45px}
  .hero__card-label{font-size:.72rem}
  .hero__card-item{font-size:.8rem;padding:.7rem 0}
  .hero__desc{font-size:.92rem}
  .hero__badge-live{font-size:.68rem;padding:.35rem .9rem}
  .btn-lg{padding:.85rem 1.8rem;font-size:.85rem}

  /* For whom */
  .for-whom__grid{grid-template-columns:1fr}
  .for-whom__card{padding:1.5rem}

  /* Video */
  .intro-video__player{padding-top:56.25%}

  /* Program */
  .acc__trigger{padding:1rem 1.1rem;gap:1rem}
  .acc__hours{width:42px;height:42px;font-size:.9rem}
  .acc__name{font-size:.85rem}
  .acc__inner{padding:1rem 1.1rem 1.1rem 1.1rem}

  /* Teacher */
  .featured-teacher__photo{min-height:220px}
  .featured-teacher__content{padding:1.5rem}
  .featured-teacher__name{font-size:1.4rem}

  /* Speakers */
  .speakers__grid{grid-template-columns:1fr}
  .speaker-card{padding:1.4rem}

  /* Cases */
  .case-card{flex:0 0 270px;height:300px}
  .cases__header{flex-direction:column;gap:1rem}

  /* Pricing */
  .pricing__price{font-size:2.2rem}
  .pricing__features{gap:.75rem}
  .pricing__feature{padding:1rem}

  /* Video carousel */
  .videos__card{flex:0 0 280px}
  .videos__card-info{padding:.8rem 1rem}
  .videos__header{flex-direction:column;gap:1rem;align-items:flex-start}

  /* Diploma */
  .diploma__card{padding:2rem 1.2rem}

  /* FAQ */
  .faq-item__q{padding:.9rem 1.1rem;font-size:.85rem}
  .faq-item__a{font-size:.82rem}

  /* Footer */
  .footer__links{flex-direction:column;gap:.6rem}
  .footer__inner{gap:1rem}

  /* Effects */
  .cursor-glow{display:none}
  .tilt-card:hover{transform:none!important}
}

/* =====================================================
   PREMIUM EFFECTS
   ===================================================== */

/* ── Animated gradient text ── */
.t-grad-anim{
  color:var(--green);
  -webkit-text-fill-color:var(--green);
}

/* ── Hero "Набор открыт" badge ── */
.hero__badge-live{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.45rem 1.2rem;
  background:rgba(110,222,59,0.1);
  border:1px solid rgba(110,222,59,0.25);
  border-radius:100px;
  font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;
  color:var(--green);margin-bottom:1.5rem;
  animation:badgePulse 2.5s ease-in-out infinite;
}
.hero__badge-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--green);
  box-shadow:0 0 8px var(--green);
  animation:dotBlink 1.5s ease-in-out infinite;
}
@keyframes badgePulse{
  0%,100%{box-shadow:0 0 0 0 rgba(110,222,59,0)}
  50%{box-shadow:0 0 0 8px rgba(110,222,59,0.08)}
}
@keyframes dotBlink{0%,100%{opacity:1}50%{opacity:0.4}}

/* ── Glassmorphism cards ── */
.glass-card{
  background:rgba(255,255,255,0.6)!important;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,0.3)!important;
  box-shadow:0 8px 32px rgba(0,46,110,0.06),inset 0 1px 0 rgba(255,255,255,0.5);
}
.glass-card:hover{
  background:rgba(255,255,255,0.75)!important;
  box-shadow:0 16px 48px rgba(0,46,110,0.1),inset 0 1px 0 rgba(255,255,255,0.6);
}
/* Hero glass — dark variant */
.hero .glass-card{
  background:rgba(229,239,248,0.06)!important;
  backdrop-filter:blur(24px);
  -webkit-backdrop-filter:blur(24px);
  border:1px solid rgba(229,239,248,0.12)!important;
  box-shadow:0 8px 40px rgba(0,0,0,0.2),inset 0 1px 0 rgba(229,239,248,0.08);
}
.hero .glass-card:hover{
  background:rgba(229,239,248,0.1)!important;
  box-shadow:0 16px 60px rgba(0,0,0,0.25),inset 0 1px 0 rgba(229,239,248,0.12);
}

/* ── Section separator animation ── */
.section-sep{
  transform:scaleX(0);
  transition:transform 0.6s cubic-bezier(0.22,1,0.36,1);
}
.section-sep.sep-visible{transform:scaleX(1)}

/* ── Button ripple effect ── */
.btn-ripple{position:relative;overflow:hidden;isolation:isolate}
.ripple-effect{
  position:absolute;
  width:0;height:0;
  border-radius:50%;
  background:rgba(255,255,255,0.3);
  transform:translate(-50%,-50%);
  animation:rippleExpand 0.5s ease-out forwards;
  pointer-events:none;
  z-index:0;
}
@keyframes rippleExpand{
  to{width:400px;height:400px;opacity:0}
}

/* ── Cursor glow follower ── */
.cursor-glow{
  position:fixed;top:0;left:0;
  width:30px;height:30px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(74,158,255,0.15),transparent 70%);
  pointer-events:none;
  z-index:9999;
  mix-blend-mode:screen;
  transition:width 0.2s,height 0.2s;
}
a:hover ~ .cursor-glow,
button:hover ~ .cursor-glow{
  width:50px;height:50px;
}

/* ── Smooth section transitions ── */
section{
  transition:background 0.5s ease;
}

/* ── Card hover shine effect ── */
.tilt-card{
  position:relative;overflow:hidden;
  transition:transform 0.15s ease,box-shadow 0.3s ease;
}
.tilt-card::after{
  content:'';position:absolute;
  top:-50%;left:-50%;width:200%;height:200%;
  background:linear-gradient(
    115deg,
    transparent 40%,
    rgba(255,255,255,0.08) 45%,
    rgba(255,255,255,0.15) 50%,
    rgba(255,255,255,0.08) 55%,
    transparent 60%
  );
  transform:translateX(-100%);
  transition:transform 0.5s ease;
  pointer-events:none;
}
.tilt-card:hover::after{transform:translateX(30%)}

/* ── Speaker / case card hover uplift ── */
.speaker-card,.case-card,.faq-item{
  transition:transform 0.3s var(--ease),border-color 0.2s,box-shadow 0.3s;
}
.speaker-card:hover,.case-card:hover{
  box-shadow:0 20px 50px rgba(0,46,110,0.1);
}

/* ── Pricing price animated gradient ── */
.pricing__price{
  background:linear-gradient(90deg,var(--primary-dark),var(--primary),#4ecaff,var(--primary-dark));
  background-size:300% 100%;
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  animation:gradShift 5s ease infinite;
}

/* ── Active nav link indicator ── */
.nav__link{position:relative}
.nav__link::after{
  content:'';position:absolute;bottom:-4px;left:0;right:0;
  height:2px;background:var(--green);
  transform:scaleX(0);transition:transform 0.25s ease;
  border-radius:1px;
}
.nav__link:hover::after{transform:scaleX(1)}