*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
 
:root {
  /* colori per sezione */
  --lovers-c:    #2d6a4f;
  --lovers-lt:   #eaf4f0;
  --lovers-mid:  #1b4332;
 
  --students-c:  #1e3a6e;
  --students-lt: #eef2fb;
  --students-mid:#0f1729;
 
  --social-c:    #c8612a;
  --social-lt:   #fdf0e8;
  --social-mid:  #7a3010;
 
  --enterprise-c:#111111;
  --enterprise-lt:#f2f2f2;
  --enterprise-mid:#000000;
 
  --neutral-bg:  #fafafa;
  --neutral-border: #e8e8e8;
  --text-main:   #30638d;
  --text-muted:  #30638d;
}
 
body {
  font-family: 'DM Sans', sans-serif;
  background: var(--neutral-bg);
  color: var(--text-main);
  padding: 0;
}
 
/* ─── HERO ─────────────────────────────────────────────────────── */
.hub-hero {
  padding: 52px 40px 40px;
  text-align: center;
  background: #fff;
  border-bottom: 1px solid var(--neutral-border);
}
 
.hub-hero .hub-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.hub-hero .hub-eyebrow span {
  display: inline-block;
  width: 20px;
  height: 2px;
  background: var(--text-muted);
}
 
.hub-hero h1 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.15;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}
 
.hub-hero h1 em {
  font-style: italic;
  font-family: 'Playfair Display', serif;
  font-weight: 700;
}
 
.hub-hero p {
  font-size: 17px;
  font-weight: 600;
/*  color: var(--text-muted); */
  color: #30638d;
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.6;
}
 
/* ─── CARD GRID ─────────────────────────────────────────────────── */
.hub-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-bottom: 1px solid var(--neutral-border);
}
 
.hub-card {
  padding: 28px 24px 24px;
  cursor: pointer;
  border-right: 1px solid var(--neutral-border);
  background: #fff;
  position: relative;
  transition: background 0.2s ease;
  user-select: none;
  overflow: hidden;
}
.hub-card:last-child { border-right: none; }
 
/* цветная полоска сверху */
.hub-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--card-color);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.hub-card:hover::before,
.hub-card.active::before {
  transform: scaleX(1);
}
 
.hub-card:hover {
  background: var(--card-lt);
}
.hub-card.active {
  background: var(--card-lt);
}
 
/* иконка */
.hub-card-icon {
  font-size: 28px;
  display: block;
  margin-bottom: 12px;
  line-height: 1;
}
 
/* заголовок карточки */
.hub-card h3 {
  font-family: 'Syne', sans-serif;
  font-size: 15px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 6px;
  letter-spacing: -0.1px;
}
 
.hub-card p {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-muted);
  line-height: 1.6;
}
 
/* индикатор активной карточки снизу */
.hub-card-indicator {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--card-color);
  opacity: 0;
  transition: opacity 0.2s;
}
.hub-card.active .hub-card-indicator {
  opacity: 1;
}
 
/* стрелочка-chevron */
.hub-card-arrow {
  position: absolute;
  bottom: 14px;
  right: 18px;
  font-size: 14px;
  color: var(--card-color);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.2s, transform 0.2s;
}
.hub-card.active .hub-card-arrow,
.hub-card:hover .hub-card-arrow {
  opacity: 1;
  transform: translateY(0);
}
 
/* цвета по карточкам */
.hub-card[data-target="lovers"]    { --card-color: var(--lovers-c);    --card-lt: var(--lovers-lt); }
.hub-card[data-target="students"]  { --card-color: var(--students-c);  --card-lt: var(--students-lt); }
.hub-card[data-target="nonprofit"] { --card-color: var(--social-c);    --card-lt: var(--social-lt); }
.hub-card[data-target="enterprise"]{ --card-color: var(--enterprise-c);--card-lt: var(--enterprise-lt); }
 
/* ─── PREVIEW PANEL ─────────────────────────────────────────────── */
.hub-panel {
  display: none;
  background: #fff;
  border-bottom: 1px solid var(--neutral-border);
  animation: panelIn 0.22s ease;
}
.hub-panel.active { display: block; }
 
@keyframes panelIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}
 
.hub-panel-inner {
  display: flex;
  align-items: flex-start;
  gap: 40px;
  
  padding: 32px 40px;
/*  max-width: 1100px; */
}
 
/* цветная боковая полоска */
.hub-panel-stripe {
  flex-shrink: 0;
  width: 4px;
  height: 100%;
  min-height: 80px;
  border-radius: 4px;
  align-self: stretch;
}
 
.hub-panel-body {
  flex: 1;
}
 
.hub-panel-eyebrow {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: block;
}
 
.hub-panel h2 {
  font-family: 'Syne', sans-serif;
  font-size: 22px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 10px;
  letter-spacing: -0.3px;
}
 
.hub-panel-desc {
  font-size: 16px;
  font-weight: 600;
  color: #30638d;
  line-height: 1.65;
  max-width: 520px;
  margin-bottom: 18px;
}
 
/* мини-список фич */
.hub-panel-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}
.hub-panel-feature {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12.5px;
  font-weight: 400;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid;
}
 
/* CTA кнопка */
.hub-panel-cta {
  display: inline-block;
  padding: 11px 24px;
  border-radius: 7px;
  text-decoration: none;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 13.5px;
  letter-spacing: 0.2px;
  color: #fff;
  transition: opacity 0.2s;
}
.hub-panel-cta:hover { opacity: 0.85; }
 
.hub-panel-cta-soft {
  display: inline-block;
  padding: 11px 24px;
  border-radius: 7px;
  text-decoration: none;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 13.5px;
  letter-spacing: 0.2px;
  background: transparent;
  border: 1.5px solid;
  margin-left: 10px;
  transition: background 0.2s;
}
 
/* правая колонка панели — статистика */
.hub-panel-stats {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 180px;
}
.hub-stat-item {
  text-align: right;
}
.hub-stat-item .sn {
  font-family: 'Syne', sans-serif;
  font-size: 28px;
  font-weight: 800;
  display: block;
  line-height: 1;
  margin-bottom: 2px;
}
.hub-stat-item .sl {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--text-muted);
  line-height: 1.3;
  display: block;
}
 
/* ─── COLORI PANEL PER SEZIONE ──────────────────────────────────── */
/* lovers — verde */
#panel-lovers .hub-panel-stripe      { background: var(--lovers-c); }
#panel-lovers .hub-panel-eyebrow     { color: var(--lovers-c); }
#panel-lovers .hub-panel-feature     { border-color: var(--lovers-c); color: var(--lovers-mid); background: var(--lovers-lt); }
#panel-lovers .hub-panel-cta         { background: var(--lovers-c); }
#panel-lovers .hub-panel-cta-soft    { border-color: var(--lovers-c); color: var(--lovers-c); }
#panel-lovers .hub-panel-cta-soft:hover { background: var(--lovers-lt); }
#panel-lovers .hub-stat-item .sn     { color: var(--lovers-c); }
 
/* students — indigo */
#panel-students .hub-panel-stripe    { background: var(--students-c); }
#panel-students .hub-panel-eyebrow   { color: var(--students-c); }
#panel-students .hub-panel-feature   { border-color: var(--students-c); color: var(--students-mid); background: var(--students-lt); }
#panel-students .hub-panel-cta       { background: var(--students-c); }
#panel-students .hub-panel-cta-soft  { border-color: var(--students-c); color: var(--students-c); }
#panel-students .hub-panel-cta-soft:hover { background: var(--students-lt); }
#panel-students .hub-stat-item .sn   { color: var(--students-c); }
 
/* nonprofit — terracotta */
#panel-nonprofit .hub-panel-stripe   { background: var(--social-c); }
#panel-nonprofit .hub-panel-eyebrow  { color: var(--social-c); }
#panel-nonprofit .hub-panel-feature  { border-color: var(--social-c); color: var(--social-mid); background: var(--social-lt); }
#panel-nonprofit .hub-panel-cta      { background: var(--social-c); }
#panel-nonprofit .hub-panel-cta-soft { border-color: var(--social-c); color: var(--social-c); }
#panel-nonprofit .hub-panel-cta-soft:hover { background: var(--social-lt); }
#panel-nonprofit .hub-stat-item .sn  { color: var(--social-c); }
 
/* enterprise — nero */
#panel-enterprise .hub-panel-stripe  { background: var(--enterprise-c); }
#panel-enterprise .hub-panel-eyebrow { color: var(--enterprise-c); }
#panel-enterprise .hub-panel-feature { border-color: #ccc; color: #333; background: var(--enterprise-lt); }
#panel-enterprise .hub-panel-cta     { background: var(--enterprise-c); }
#panel-enterprise .hub-panel-cta-soft{ border-color: var(--enterprise-c); color: var(--enterprise-c); }
#panel-enterprise .hub-panel-cta-soft:hover { background: var(--enterprise-lt); }
#panel-enterprise .hub-stat-item .sn { color: var(--enterprise-c); }
 
/* ─── MOBILE ────────────────────────────────────────────────────── */
@media (max-width: 860px) {
  .hub-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hub-card { border-bottom: 1px solid var(--neutral-border); }
  .hub-hero { padding: 36px 20px 28px; }
  .hub-panel-inner {
    flex-direction: column;
    gap: 20px;
    padding: 24px 20px;
  }
  .hub-panel-stats {
    flex-direction: row;
    flex-wrap: wrap;
    min-width: unset;
  }
  .hub-stat-item { text-align: left; }
}
 
@media (max-width: 480px) {
  .hub-grid { grid-template-columns: 1fr; }
  .hub-panel-cta-soft { margin-left: 0; margin-top: 10px; display: block; text-align: center; }
}