/* ============================================================
   Росатом Технологии — форматы партнёрства для команд
   Светлая тема в фирменной гамме Росатома:
   синий #1762ba (основной), #1a71d5 (hover), #0c367c (глубокий),
   #4a96d2 (светлый, из логотипа), фон #fff / #eef3f6, текст #13161c.
   Шрифт rosatom.ru — Manrope, подключаем для всего текста.
   ============================================================ */

:root {
  --bg: #ffffff;
  --bg-alt: #eef3f6;
  --bg-soft: #f7f9fb;
  --surface: #ffffff;
  --border: #dbe3eb;
  --border-strong: #c4cfdb;

  --text: #13161c;
  --text-2: #647186;
  --text-3: #8a97a8;

  --accent: #1762ba;         /* фирменный синий rosatom.ru */
  --accent-strong: #104a9c;  /* нажатие */
  --accent-hover: #1a71d5;   /* наведение */
  --accent-deep: #0c367c;    /* глубокий синий */
  --accent-2: #4a96d2;       /* светлый синий из логотипа */
  --accent-ink: #ffffff;     /* текст на синих кнопках */

  --grad: linear-gradient(120deg, #1f2466 0%, #1762ba 55%, #4a96d2 100%);

  --radius: 16px;
  --radius-sm: 10px;
  --container: 1160px;

  --shadow: 0 18px 50px -18px rgba(12, 54, 124, 0.18);
  --shadow-glow: 0 0 0 1px rgba(23, 98, 186, 0.18), 0 12px 40px -12px rgba(23, 98, 186, 0.25);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Manrope", "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: "Manrope", "Inter", system-ui, sans-serif;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--text);
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; }
ul, ol { list-style: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.container-narrow { max-width: 820px; }

/* ---------- Кнопки ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: "Manrope", "Inter", sans-serif;
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  padding: 14px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
  white-space: nowrap;
}
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 8px 24px -10px rgba(23, 98, 186, 0.55);
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 14px 32px -10px rgba(23, 98, 186, 0.6); }
.btn-primary:active { background: var(--accent-strong); }
.btn-ghost {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--text);
}
/* Белая пилюля — фирменная кнопка Росатома на тёмном (стиль «Меню»/«Все новости») */
.btn-light {
  background: #ffffff;
  color: var(--text);
  box-shadow: 0 8px 24px -10px rgba(0, 0, 0, 0.45);
}
.btn-light:hover { background: #eef3f6; transform: translateY(-2px); }
/* Стеклянная пилюля на тёмном хиро — как их новостные панели rgba(29,38,56,…) */
.btn-glass {
  background: rgba(238, 243, 247, 0.08);
  border-color: rgba(238, 243, 247, 0.24);
  color: #ffffff;
}
.btn-glass:hover { background: rgba(238, 243, 247, 0.14); border-color: rgba(238, 243, 247, 0.4); transform: translateY(-2px); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 10px 18px; font-size: 14px; }
.btn-lg { padding: 17px 32px; font-size: 16px; }
.btn-block { width: 100%; }

/* ---------- Header — тёмный, в стиле rosatom.ru ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(23, 26, 32, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-mark { width: 36px; height: 36px; }
.brand-text {
  font-family: "Manrope", sans-serif;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: #ffffff;
}
.brand-dot { color: var(--accent-2); margin: 0 3px; font-weight: 600; }

.site-nav {
  display: flex;
  gap: 8px;
  margin-left: auto;
}
/* Пилюли-чипы, как в шапке rosatom.ru */
.site-nav a {
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: #b6c0cd;
  transition: color 0.15s ease, background 0.15s ease;
}
.site-nav a:hover { color: #ffffff; background: rgba(255, 255, 255, 0.08); }

.header-cta { margin-left: 8px; flex-shrink: 0; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: #ffffff;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 12px 24px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  background: #171a20;
}
.mobile-nav a {
  padding: 12px 8px;
  font-weight: 500;
  color: #b6c0cd;
  border-radius: var(--radius-sm);
}
.mobile-nav a:hover { color: #ffffff; background: rgba(255, 255, 255, 0.07); }
.mobile-nav .btn { margin-top: 10px; }
.mobile-nav.open { display: flex; }

/* ---------- Hero — тёмный экран в стиле главной rosatom.ru ---------- */
.hero {
  position: relative;
  padding: 120px 0 100px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 55% 65% at 78% 18%, rgba(26, 113, 213, 0.16), transparent 65%),
    radial-gradient(ellipse 45% 55% at 12% 88%, rgba(74, 150, 210, 0.1), transparent 65%),
    linear-gradient(168deg, #1d222b 0%, #171a20 100%);
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.7;
}
.orb-a {
  width: 620px;
  height: 620px;
  top: -220px;
  right: -140px;
  background: radial-gradient(circle at 35% 35%, rgba(26, 113, 213, 0.32), transparent 65%);
}
.orb-b {
  width: 520px;
  height: 520px;
  bottom: -260px;
  left: -160px;
  background: radial-gradient(circle at 60% 40%, rgba(74, 150, 210, 0.22), transparent 65%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(238, 243, 247, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(238, 243, 247, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, black 30%, transparent 75%);
}
.hero-atom {
  position: absolute;
  top: 50%;
  right: -140px;
  width: 460px;
  height: 460px;
  transform: translateY(-50%);
  opacity: 0.6;
}
.hero-atom-spin {
  transform-origin: 200px 200px;
  animation: atom-spin 90s linear infinite;
}
@keyframes atom-spin { to { transform: rotate(360deg); } }

.hero-inner { position: relative; text-align: center; }
.hero-badge {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid rgba(238, 243, 247, 0.22);
  background: rgba(238, 243, 247, 0.07);
  color: #dbe7f4;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  margin-bottom: 28px;
}
.hero h1 {
  font-size: clamp(38px, 6vw, 68px);
  font-weight: 800;
  margin-bottom: 24px;
  color: #ffffff;
}
/* Светлее базовый grad: тёмное индиго #1f2466 на тёмном хиро не читается */
.grad-text {
  background: linear-gradient(120deg, #1a71d5 0%, #4a96d2 45%, #bcd6fe 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  max-width: 680px;
  margin: 0 auto 36px;
  font-size: clamp(16px, 2vw, 19px);
  color: rgba(238, 243, 247, 0.72);
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Секции ---------- */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(28px, 4vw, 42px); margin-bottom: 16px; }
.section-sub { color: var(--text-2); font-size: 17px; }

/* ---------- О нас ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
  margin-bottom: 48px;
}
.about-info h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 20px; }
.about-info p { color: var(--text-2); font-size: 16.5px; margin-bottom: 16px; }
.about-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  font-family: "Manrope", sans-serif;
  font-weight: 600;
  font-size: 15px;
  color: var(--accent);
}
.about-link svg { width: 16px; height: 16px; transition: transform 0.18s ease; }
.about-link:hover { color: var(--accent-hover); }
.about-link:hover svg { transform: translateX(4px); }

.about-visual {
  background: linear-gradient(160deg, #f2f7fc, #e6eef7);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 12px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.about-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 45% at 70% 20%, rgba(74, 150, 210, 0.14), transparent 70%);
  pointer-events: none;
}
.about-visual svg { width: 100%; height: auto; }

/* Стат-плитки: value — Manrope semibold, пропорциональные цифры */
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.stat {
  background: var(--surface);
  padding: 26px 18px;
  text-align: center;
}
.stat dd {
  font-family: "Manrope", sans-serif;
  font-weight: 700;
  font-size: clamp(30px, 3.4vw, 42px);
  letter-spacing: -0.02em;
  color: var(--accent-deep);
}
.stat dt {
  font-size: 13.5px;
  color: var(--text-2);
  margin-top: 6px;
  line-height: 1.4;
}

/* ---------- Форматы партнёрства ---------- */
.formats { display: grid; gap: 24px; }
.format-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.format-block:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}
.format-head {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  padding-bottom: 26px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--border);
}
.format-icon {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: var(--accent);
  background: linear-gradient(135deg, rgba(23, 98, 186, 0.1), rgba(74, 150, 210, 0.12));
  border: 1px solid rgba(23, 98, 186, 0.22);
}
.format-icon svg { width: 34px; height: 34px; }
.format-num {
  display: block;
  font-family: "Manrope", sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 6px;
}
.format-head h3 { font-size: clamp(22px, 3vw, 28px); margin-bottom: 8px; }
.format-head p { color: var(--text-2); font-size: 16px; max-width: 640px; }

.format-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 0.9fr;
  gap: 32px;
}
.format-col h4 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 16px;
}
.format-col ul { display: grid; gap: 12px; }
.format-col ul li {
  position: relative;
  padding-left: 24px;
  font-size: 14.5px;
  color: var(--text-2);
}
.format-col ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: rgba(23, 98, 186, 0.08);
  border: 1px solid rgba(23, 98, 186, 0.35);
}
.format-col ul li::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 7.5px;
  width: 6.5px;
  height: 4px;
  border-left: 1.6px solid var(--accent);
  border-bottom: 1.6px solid var(--accent);
  transform: rotate(-45deg);
}

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-deep);
  padding: 7px 13px;
  border-radius: 999px;
  background: rgba(23, 98, 186, 0.06);
  border: 1px solid rgba(23, 98, 186, 0.24);
}
.format-more {
  display: inline-block;
  margin-top: 16px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid rgba(23, 98, 186, 0.35);
}
.format-more:hover { color: var(--accent-hover); border-bottom-color: var(--accent-hover); }

/* ---------- Направления ---------- */
.cards-3 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.tile {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.tile:hover { transform: translateY(-3px); border-color: var(--accent-2); box-shadow: var(--shadow); }
.tile-num {
  font-family: "Manrope", sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--accent);
  opacity: 0.9;
  display: block;
  margin-bottom: 14px;
}
.tile h3 { font-size: 17px; margin-bottom: 8px; }
.tile p { font-size: 13.5px; color: var(--text-2); }

/* ---------- Шаги ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.step {
  position: relative;
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.step-num {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-family: "Manrope", sans-serif;
  font-weight: 700;
  font-size: 17px;
  color: var(--accent-ink);
  background: var(--accent);
}
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--text-2); }

/* ---------- Кейсы ---------- */
.cases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.case-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0 0 28px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.case-card:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: var(--shadow); }
.case-thumb {
  height: 140px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 22px;
}
.case-thumb svg { width: 100%; height: 100%; }
.case-field {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 28px 12px;
}
.case-card h3 { font-size: 19px; margin: 0 28px 12px; }
.case-card > p:not(.case-result) { font-size: 14.5px; color: var(--text-2); margin: 0 28px 20px; }
.case-result {
  margin: auto 28px 0;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-size: 14.5px;
  color: var(--text-2);
}
.case-result strong {
  font-family: "Manrope", sans-serif;
  font-weight: 700;
  font-size: 26px;
  color: var(--accent-deep);
  display: block;
  margin-bottom: 2px;
}

/* ---------- FAQ ---------- */
.faq-list { display: grid; gap: 12px; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.2s ease;
}
.faq-item[open] { border-color: var(--accent-2); }
.faq-item summary {
  padding: 20px 56px 20px 24px;
  font-family: "Manrope", sans-serif;
  font-weight: 600;
  font-size: 16.5px;
  cursor: pointer;
  position: relative;
  list-style: none;
  transition: color 0.15s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--accent); }
.faq-item summary::after {
  content: "";
  position: absolute;
  right: 24px;
  top: 50%;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--text-2);
  border-bottom: 2px solid var(--text-2);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.faq-item[open] summary::after {
  transform: translateY(-30%) rotate(225deg);
  border-color: var(--accent);
}
.faq-item p {
  padding: 0 24px 22px;
  font-size: 15px;
  color: var(--text-2);
  max-width: 680px;
}

/* ---------- Форма ---------- */
.section-apply {
  background:
    radial-gradient(ellipse 70% 90% at 80% 10%, rgba(74, 150, 210, 0.12), transparent 60%),
    radial-gradient(ellipse 60% 80% at 10% 90%, rgba(23, 98, 186, 0.08), transparent 60%),
    var(--bg-alt);
}
.apply-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 56px;
  align-items: start;
}
.apply-info h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 18px; }
.apply-info > p { color: var(--text-2); font-size: 16.5px; margin-bottom: 26px; }
.apply-points { display: grid; gap: 12px; margin-bottom: 28px; }
.apply-points li {
  position: relative;
  padding-left: 30px;
  font-size: 15px;
  color: var(--text);
}
.apply-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(23, 98, 186, 0.1);
  border: 1px solid rgba(23, 98, 186, 0.35);
}
.apply-points li::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  width: 8px;
  height: 4.5px;
  border-left: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg);
}
.apply-alt { font-size: 15px; color: var(--text-2); }
.apply-alt a {
  color: var(--accent);
  font-weight: 600;
  border-bottom: 1px solid rgba(23, 98, 186, 0.35);
}
.apply-alt a:hover { color: var(--accent-hover); border-bottom-color: var(--accent-hover); }

.apply-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px;
  box-shadow: var(--shadow);
}
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 8px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 15px;
  font: inherit;
  font-size: 15px;
  color: var(--text);
  background: var(--bg-soft);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.field input::placeholder,
.field textarea::placeholder { color: var(--text-3); }
.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23647186' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 15px center;
  padding-right: 38px;
  cursor: pointer;
}
.field select:invalid { color: var(--text-3); }
.field select option { background: var(--surface); color: var(--text); }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: 0 0 0 3px rgba(23, 98, 186, 0.14);
}
.field textarea { resize: vertical; min-height: 84px; }
.field input[aria-invalid="true"],
.field select[aria-invalid="true"],
.field textarea[aria-invalid="true"] { border-color: #d64545; }

/* Зона загрузки файла */
.file-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 26px 20px;
  text-align: center;
  background: var(--bg-soft);
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.file-zone:hover,
.file-zone:focus-visible,
.file-zone.dragover {
  border-color: var(--accent);
  background: rgba(23, 98, 186, 0.04);
  outline: none;
}
.file-zone svg { width: 26px; height: 26px; color: var(--accent); margin-bottom: 4px; }
.file-zone-text { font-size: 14.5px; color: var(--text-2); }
.file-link { color: var(--accent); font-weight: 600; }
.file-zone small { font-size: 12.5px; color: var(--text-3); }

.file-chip[hidden] { display: none; }
.file-chip {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
  padding: 12px 14px;
  background: rgba(23, 98, 186, 0.05);
  border: 1px solid rgba(23, 98, 186, 0.28);
  border-radius: var(--radius-sm);
  font-size: 14px;
}
.file-chip svg { width: 20px; height: 20px; color: var(--accent); flex-shrink: 0; }
.file-chip-name {
  color: var(--text);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-chip-size { color: var(--text-3); font-size: 12.5px; flex-shrink: 0; }
.file-chip-remove {
  margin-left: auto;
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: none;
  color: var(--text-2);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.file-chip-remove:hover { color: #d64545; border-color: #d64545; }

.field-check { margin-bottom: 22px; }
.check {
  display: flex !important;
  gap: 12px;
  align-items: flex-start;
  cursor: pointer;
}
.check input {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: var(--accent);
  cursor: pointer;
}
.check span { font-size: 13.5px; line-height: 1.5; color: var(--text-2); font-weight: 400 !important; }

.form-note {
  margin-top: 16px;
  font-size: 12.5px;
  color: var(--text-3);
  text-align: center;
}
.form-success {
  text-align: center;
  padding: 48px 24px;
}
.form-success .success-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(23, 98, 186, 0.08);
  border: 1px solid rgba(23, 98, 186, 0.35);
}
.form-success .success-icon svg {
  width: 30px;
  height: 30px;
  stroke: var(--accent);
  stroke-width: 2.4;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.form-success h3 { font-size: 22px; margin-bottom: 10px; }
.form-success p { color: var(--text-2); font-size: 15px; max-width: 380px; margin: 0 auto; }

/* ---------- Footer — тёмная плашка в стиле rosatom.ru ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
  background: #171a20;
  color: #b6c0cd;
}
.site-footer .brand-text { color: #ffffff; }
.site-footer .brand-dot { color: var(--accent-2); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.footer-brand p {
  margin-top: 18px;
  font-size: 14px;
  color: #9aa5b4;
  max-width: 300px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #7c8794;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  padding: 6px 0;
  font-size: 14.5px;
  color: #b6c0cd;
  transition: color 0.15s ease;
}
.footer-col a:hover { color: #ffffff; }
.footer-addr { margin-top: 10px; font-size: 13.5px; color: #7c8794; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding-top: 28px;
  font-size: 13px;
  color: #7c8794;
}
.footer-legal { display: flex; gap: 24px; }
.footer-legal a { color: #7c8794; transition: color 0.15s ease; }
.footer-legal a:hover { color: #ffffff; }

/* ---------- Reveal-анимации ----------
   Скрываем элементы только при включённом JS (html.js) —
   без скриптов контент остаётся полностью видимым. */
.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.js .reveal.visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: 0.08s; }
.delay-2 { transition-delay: 0.16s; }
.delay-3 { transition-delay: 0.24s; }
.delay-4 { transition-delay: 0.32s; }
.delay-5 { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .hero-atom-spin { animation: none; }
  * { animation: none !important; }
}

/* ============================================================
   Адаптив
   ============================================================ */
@media (max-width: 1080px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-visual { max-width: 560px; margin: 0 auto; }
  .about-stats { grid-template-columns: repeat(2, 1fr); }

  .format-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .cards-3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 32px 20px; }
  .cases { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; }
  .apply-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .site-nav, .header-cta { display: none; }
  .nav-toggle { display: flex; margin-left: auto; }

  .hero { padding: 80px 0 72px; }
  .hero-atom { opacity: 0.25; width: 320px; height: 320px; right: -110px; }
  .hero-actions .btn { width: 100%; }

  .section { padding: 72px 0; }
  .section-head { margin-bottom: 40px; }

  .format-block { padding: 26px 22px; }
  .format-head { flex-direction: column; gap: 16px; }
  .format-grid { grid-template-columns: 1fr; gap: 26px; }

  .steps { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .apply-form { padding: 26px 22px; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  .cards-3 { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr 1fr; }
}