:root {
  --primary: #1558d6;
  --primary-dark: #02215b;
  --primary-light: #6fbeFD;
  --bg: #ffffff;
  --bg-soft: #f5f8fc;
  --text: #172033;
  --muted: #657187;
  --border: #e4eaf2;
  --err: #d33;
  --ok: #18864b;
  --radius: 14px;
  --shadow: 0 10px 35px rgba(2, 33, 91, .08);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 82px; }
body {
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  line-height: 1.65;
  background: var(--bg);
}
a { color: var(--primary); }
.container { width: min(1180px, 92%); margin: 0 auto; }
.narrow { width: min(720px, 92%); }

/* Header — clean university style */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}
.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}
.logo {
  color: var(--primary-dark);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -.03em;
  text-decoration: none;
  white-space: nowrap;
}
.logo span { color: var(--primary); }
nav { display: flex; align-items: center; gap: 26px; }
nav a {
  color: #34415a;
  text-decoration: none;
  font-size: .93rem;
  font-weight: 500;
  transition: color .2s;
}
nav a:hover { color: var(--primary); }
.burger {
  display: none;
  background: none;
  border: 0;
  color: var(--primary-dark);
  font-size: 1.7rem;
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff !important;
  padding: 13px 25px;
  border: 1px solid var(--primary);
  border-radius: 7px;
  font-size: .96rem;
  font-weight: 650;
  text-decoration: none;
  cursor: pointer;
  transition: transform .2s, background .2s, box-shadow .2s;
}
.btn:hover {
  background: #0d49bb;
  border-color: #0d49bb;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(21,88,214,.22);
}
.btn:disabled { opacity: .6; cursor: wait; transform: none; }
.btn-small { padding: 9px 17px; font-size: .86rem; }
.btn-outline {
  background: transparent;
  color: #fff !important;
  border-color: rgba(255,255,255,.7);
}
.btn-outline:hover { background: rgba(255,255,255,.12); }
.btn-block { width: 100%; }

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  text-align: left;
  padding: 105px 0 88px;
  background:
    radial-gradient(circle at 85% 20%, rgba(111,190,253,.28), transparent 28%),
    linear-gradient(120deg, #02215b 0%, #1558d6 72%, #276de1 100%);
}
.hero::after {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 50%;
  right: -170px;
  bottom: -230px;
}
.hero .container { position: relative; z-index: 1; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: .75rem;
  color: #b9dcff;
  margin-bottom: 18px;
  font-weight: 700;
}
.hero h1 {
  max-width: 850px;
  font-size: clamp(2.25rem, 5.4vw, 4.7rem);
  line-height: 1.06;
  letter-spacing: -.045em;
  margin-bottom: 22px;
}
.dates {
  color: #e5f0ff;
  font-size: 1.05rem;
  margin-bottom: 31px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.timer {
  display: flex;
  justify-content: flex-start;
  gap: 10px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.timer div {
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 9px;
  min-width: 82px;
  padding: 12px 11px;
  text-align: center;
  backdrop-filter: blur(5px);
}
.timer b { display: block; font-size: 1.75rem; line-height: 1.2; }
.timer span { font-size: .67rem; text-transform: uppercase; opacity: .78; }

/* Sections */
.section { padding: 88px 0; }
.section.alt {
  background: var(--bg-soft);
  border-top: 1px solid #eef2f7;
  border-bottom: 1px solid #eef2f7;
}
h2 {
  font-size: clamp(1.75rem, 3vw, 2.45rem);
  line-height: 1.2;
  letter-spacing: -.035em;
  color: var(--primary-dark);
  margin-bottom: 28px;
}
.lead { color: var(--muted); margin-bottom: 28px; }
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: start;
}
.note {
  display: inline-block;
  margin-top: 18px;
  background: #edf5ff;
  color: var(--primary);
  padding: 7px 14px;
  border-radius: 999px;
  font-weight: 650;
  font-size: .9rem;
}
.cards { list-style: none; display: grid; gap: 12px; }
.cards li {
  min-height: 58px;
  background: #fff;
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  padding: 16px 19px;
  border-radius: 8px;
  box-shadow: 0 3px 14px rgba(2,33,91,.035);
}

/* Speakers */
.speakers {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 24px;
}
.speaker {
  position: relative;
  aspect-ratio: 4 / 5; /* у всех спикеров одинаковая рамка */
  overflow: hidden;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  cursor: pointer;
  outline: none;
}
.speaker img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 18%; /* лицо остаётся в кадре при любой пропорции исходника */
  display: block;
  transition: transform .6s ease;
}
/* затемнение при наведении */
.speaker::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(2, 20, 60, .78);
  opacity: 0;
  transition: opacity .4s ease;
  z-index: 1;
}
.speaker-info {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 40px 14px 14px;
  color: #fff;
  background: linear-gradient(to bottom, transparent, rgba(0,0,0,.75));
  transition: background .4s ease;
}
.speaker-info h3 {
  font-size: .9rem;
  font-weight: 600;
  line-height: 1.25;
  color: #fff;
}
/* описание скрыто, плавно появляется */
.speaker-info p {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin-top: 0;
  font-size: .76rem;
  line-height: 1.4;
  color: #ffe97a;
  white-space: pre-line;
  overflow-wrap: anywhere;
  transform: translateY(12px);
  transition: max-height .5s ease, opacity .4s ease .1s, transform .4s ease .1s, margin-top .4s ease;
}
.speaker:hover::after,
.speaker:focus-within::after { opacity: 1; }
.speaker:hover img,
.speaker:focus-within img { transform: scale(1.05); }
.speaker:hover .speaker-info,
.speaker:focus-within .speaker-info { background: none; }
.speaker:hover .speaker-info p,
.speaker:focus-within .speaker-info p {
  max-height: 160px;
  opacity: 1;
  margin-top: 8px;
  transform: none;
}
.speaker:focus-visible { box-shadow: 0 0 0 3px var(--primary-light); }

/* Program */
.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}
.tab {
  padding: 10px 18px;
  border: 1px solid #cbd7e8;
  background: #fff;
  color: var(--primary-dark);
  border-radius: 6px;
  font-weight: 650;
  cursor: pointer;
  transition: .2s;
}
.tab:hover { border-color: var(--primary); color: var(--primary); }
.tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.schedule {
  list-style: none;
  max-width: 900px;
  border-top: 1px solid var(--border);
}
.schedule[hidden] { display: none; }
.schedule li {
  display: flex;
  gap: 25px;
  padding: 16px 4px;
  border-bottom: 1px solid var(--border);
  align-items: center;
}
.schedule time {
  flex: 0 0 62px;
  font-weight: 750;
  color: var(--primary);
}

/* Form */
form {
  background: #fff;
  padding: 34px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 17px; }
.field { margin-bottom: 17px; }
label {
  display: block;
  font-weight: 650;
  font-size: .88rem;
  margin-bottom: 7px;
  color: #34415a;
}
input[type=text], input[type=email], input[type=tel], select {
  width: 100%;
  padding: 12px 13px;
  border: 1px solid #cbd5e2;
  border-radius: 7px;
  font-size: .98rem;
  font-family: inherit;
  background: #fff;
  color: var(--text);
  transition: border .2s, box-shadow .2s;
}
input:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(21,88,214,.12);
}
.field.invalid input, .field.invalid select { border-color: var(--err); }
.error { display: none; color: var(--err); font-size: .8rem; margin-top: 4px; }
.field.invalid .error { display: block; }
.check label {
  font-weight: 400;
  display: flex;
  gap: 8px;
  align-items: flex-start;
}
.form-msg { margin-top: 14px; text-align: center; font-weight: 650; }
.form-msg.ok { color: var(--ok); }
.form-msg.fail { color: var(--err); }

/* Footer */
.footer {
  background: var(--primary-dark);
  color: #b9c9e1;
  padding: 42px 0;
  font-size: .9rem;
}
.footer a { color: #fff; }
.footer .container {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

/* Mobile */
@media (max-width: 760px) {
  .nav { min-height: 68px; }
  .burger { display: block; }
  nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 4%;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 25px rgba(2,33,91,.08);
  }
  nav.open { display: flex; }
  nav a { padding: 12px 5px; }
  nav .btn { text-align: center; margin: 6px 0 10px; }
  .hero { padding: 76px 0 64px; }
  .hero h1 { font-size: clamp(2.15rem, 12vw, 3.4rem); }
  .section { padding: 62px 0; }
  .grid-2, .row { grid-template-columns: 1fr; gap: 0; }
  .timer { gap: 7px; margin-top: 35px; }
  .timer div { min-width: 67px; }
  .timer b { font-size: 1.45rem; }
  form { padding: 22px; }
  .footer .container { flex-direction: column; }
}

/* Partners */
.partners {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 38px 0;
}
.partners-title {
  text-align: center;
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: .75rem;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 22px;
}
.partners-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 70px;
  flex-wrap: wrap;
}
.partners-logos a { display: block; transition: transform .2s; }
.partners-logos a:hover { transform: translateY(-3px); }
.partners-logos img {
  display: block;
  height: 110px;
  width: auto;
  max-width: 100%;
}
@media (max-width: 760px) {
  .partners { padding: 28px 0; }
  .partners-logos { gap: 32px; }
  .partners-logos img { height: 84px; }
}

/* Info text */
.info { max-width: 820px; margin: 0; }
.info p {
  margin-bottom: 20px;
  text-align: justify;
  hyphens: auto;
}
.info strong { color: var(--primary-dark); }
.info-extra {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.info-extra h3 {
  color: var(--primary-dark);
  margin-bottom: 14px;
  font-size: 1.05rem;
}

/* Expandable schedule items */
.schedule li.has-more { display: block; padding: 0; }
.schedule summary {
  display: flex;
  align-items: center;
  gap: 25px;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
  transition: background .2s;
}
.schedule summary::-webkit-details-marker { display: none; }
.schedule summary:hover { background: var(--bg-soft); }
.schedule summary:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; }
.schedule summary::after {
  content: "";
  flex: 0 0 9px;
  height: 9px;
  margin: 0 8px 4px auto;
  border-right: 2px solid var(--primary);
  border-bottom: 2px solid var(--primary);
  transform: rotate(45deg);
  transition: transform .25s;
}
.schedule details[open] summary::after { transform: rotate(-135deg); margin-bottom: -2px; }
.s-more {
  padding: 0 4px 20px 87px;
  color: var(--muted);
  font-size: .95rem;
}
.s-more p + p { margin-top: 10px; }
@media (max-width: 760px) {
  .schedule summary { gap: 14px; }
  .s-more { padding-left: 4px; }
}

/* Главный тезис в hero */
.hero .hero-title {
  max-width: 900px;
  font-size: inherit;
  line-height: 1.2;
  letter-spacing: -.02em;
  margin-bottom: 26px;
}
.hero-title span { display: block; }
.hero-title .ht-from {
  font-size: clamp(1.05rem, 1.8vw, 1.45rem);
  font-weight: 500;
  color: #cfe4ff;
  letter-spacing: 0;
  line-height: 1.45;
  margin-bottom: 14px;
}
.hero-title .ht-from b { color: #ffe97a; font-weight: 700; }
.hero-title .ht-to {
  font-size: clamp(1.35rem, 2.5vw, 2.1rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.02em;
  padding-left: 22px;
  border-left: 4px solid var(--primary-light);
}
.hero-title .ht-sub {
  margin-top: 16px;
  padding-left: 26px;
  font-size: clamp(.95rem, 1.4vw, 1.1rem);
  font-weight: 600;
  letter-spacing: .01em;
  color: #b9dcff;
}
@media (max-width: 760px) {
  .hero-title .ht-to { padding-left: 14px; }
  .hero-title .ht-sub { padding-left: 18px; }
}

/* Переключатель языка */
.lang {
  display: inline-flex;
  flex: 0 0 auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 7px;
  overflow: hidden;
}
.lang button {
  border: 0;
  background: transparent;
  color: #34415a;
  font: inherit;
  font-size: .8rem;
  font-weight: 650;
  padding: 7px 10px;
  cursor: pointer;
  transition: background .2s, color .2s;
}
.lang button + button { border-left: 1px solid var(--border); }
.lang button:hover { color: var(--primary); }
.lang button.active { background: var(--primary); color: #fff; }
.lang button:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; }

/* Длинные названия на казахском/английском: логотип может переноситься */
@media (max-width: 1100px) {
  .logo { white-space: normal; font-size: 1.1rem; line-height: 1.2; max-width: 300px; }
  nav { gap: 18px; }
}
@media (max-width: 760px) {
  .nav { gap: 12px; }
  .logo { flex: 1 1 auto; min-width: 0; max-width: none; font-size: 1rem; }
  .burger { margin-left: -4px; }
}

/* Спикеры на телефоне: две колонки, текст ещё компактнее */
@media (max-width: 560px) {
  .speakers { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .speaker-info { padding: 30px 10px 10px; }
  .speaker-info h3 { font-size: .8rem; }
  .speaker-info p { font-size: .7rem; }
  .speaker:hover .speaker-info p,
  .speaker:focus-within .speaker-info p { max-height: 130px; }
}

/* Читабельность блоков «О мероприятии» и «О конференции» */
.about-text { max-width: 860px; }
#about .about-text p:not(.note) {
  font-size: 1.15rem;
  line-height: 1.75;
  color: var(--text);
  text-align: left;
  margin-bottom: 18px;
}
#about .about-text .about-lead {
  font-size: 1.4rem;
  line-height: 1.45;
  font-weight: 700;
  color: var(--primary-dark);
}
#about .about-text .about-goal {
  border-left: 3px solid var(--primary);
  padding-left: 19px;
  font-weight: 600;
}
#about .note {
  margin-top: 10px;
  padding: 10px 20px;
  font-size: 1.05rem;
}
.info { max-width: 860px; }
.info p {
  font-size: 1.15rem;
  line-height: 1.75;
  color: var(--text);
  text-align: left;   /* без выравнивания по ширине: нет «дыр» между словами */
  hyphens: manual;    /* без автопереносов слов */
  margin-bottom: 18px;
}
.info strong, .info b { color: var(--primary-dark); font-weight: 700; }
.info-extra p:nth-of-type(n+2) { margin-bottom: 10px; }
@media (max-width: 760px) {
  #about .about-text p:not(.note), .info p { font-size: 1.05rem; }
  #about .about-text .about-lead { font-size: 1.25rem; }
}

/* Читабельность раскрывающегося описания в программе */
.s-more {
  color: var(--text);   /* тёмный текст вместо серого */
  font-size: 1.05rem;
  line-height: 1.7;
}
.s-more p + p { margin-top: 12px; }
.schedule .s-title { font-weight: 500; }

/* ===== Спикеры на телефоне и планшете (без мыши) =====
   Вместо показа по наведению — фото сверху, информация всегда под ним */
@media (hover: none), (max-width: 560px) {
  .speakers { grid-template-columns: 1fr; gap: 16px; }
  .speakers .speaker {
    aspect-ratio: auto;
    display: flex;
    flex-direction: column;
    cursor: default;
  }
  .speakers .speaker img {
    position: static;
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 5;
    transform: none !important;
  }
  .speakers .speaker::after { display: none; }
  .speakers .speaker .speaker-info {
    position: static;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  }
  .speakers .speaker .speaker-info h3 { font-size: 1rem; }
  .speakers .speaker .speaker-info p {
    max-height: none !important;
    opacity: 1;
    overflow: visible;
    margin-top: 8px;
    transform: none;
    font-size: .85rem;
    color: #fff;                /* на телефоне белый текст вместо жёлтого */
    white-space: pre-line;      /* сохраняет переносы строк из текста */
    overflow-wrap: anywhere;    /* длинные email не вылезают за карточку */
  }
}

/* Описания докладов: сохраняем абзацы из текста */
.schedule .s-more p { white-space: pre-line; }
.schedule .s-more p + p { margin-top: 10px; }

/* Антиспам: поле-ловушка скрыто от людей */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ===== О мероприятии: текст + карточка фактов ===== */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
  max-width: 1040px;
}
.facts {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 6px 20px;
}
.fact {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 0;
  border-top: 1px solid var(--border);
}
.fact:first-child { border-top: 0; }
.fact svg { flex: none; margin-top: 2px; color: var(--primary); }
.fact b { display: block; font-weight: 650; color: var(--primary-dark); line-height: 1.35; }
.fact span { display: block; color: var(--muted); font-size: .92rem; }
.about-ctx {
  max-width: 1040px;
  margin-top: 40px;
  padding: 22px 26px;
  background: #edf5ff;
  border-radius: 12px;
  color: var(--text);
}
.about-ctx h3 { font-size: 1.15rem; color: var(--primary-dark); margin-bottom: 12px; }
.about-ctx p { font-size: 1.05rem; line-height: 1.7; margin-bottom: 10px; }
.about-ctx .ctx-org { margin: 14px 0 0; padding-top: 12px; border-top: 1px solid rgba(21,88,214,.18); }
.about-ctx b { color: var(--primary-dark); font-weight: 700; }
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 28px; }
}