.page-forum main { background: var(--paper); }

.forum-hero {
  --navy-deep: #0a1228;
  --navy-mid:  #12203f;
  --navy-line: rgba(255,255,255,.12);
  --teal-glow: #36d0aa;

  position: relative;
  padding: 188px 0 96px;
  overflow: hidden;
  color: #eaeefb;
  background: var(--navy-deep);
}
.forum-hero-bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(circle at 80% 14%, rgba(54,208,170,.22), transparent 40%),
    radial-gradient(circle at 12% 88%, rgba(95,143,232,.16), transparent 44%),
    linear-gradient(160deg, var(--navy-deep), var(--navy-mid) 70%, #0c1733);
}
.forum-hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(var(--navy-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--navy-line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(circle at 74% 30%, #000 6%, transparent 64%);
          mask-image: radial-gradient(circle at 74% 30%, #000 6%, transparent 64%);
  opacity: .5;
}
.forum-hero-inner { position: relative; z-index: 1; max-width: none; }
.forum-hero .section-tag { color: var(--teal-glow); }
.forum-hero .section-tag::before { background: var(--teal-glow); }
.forum-hero h1 {
  color: #fff;
  font-size: clamp(30px, 3.6vw, 46px);
  line-height: 1.03; margin: 20px 0 26px; letter-spacing: -.02em;
}
.forum-hero-lead {
  max-width: 640px;
  font-size: clamp(18px, 2.1vw, 22px);
  color: rgba(234,238,251,.82);
}

.forum-event-meta { display: flex; flex-wrap: wrap; gap: 12px; margin: 30px 0 36px; }
.forum-meta-item {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 10px 18px;
  font-size: 14px; font-weight: 600; color: #eaeefb;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--navy-line);
  border-radius: 50px;
}
.forum-meta-item::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--teal-glow); box-shadow: 0 0 0 4px rgba(54,208,170,.18);
}
.forum-hero .btn-gold { color: #06281f; }

.forum-section { padding: 88px 0 40px; }
.forum-section-title {
  font-size: clamp(26px, 3.4vw, 42px);
  margin-bottom: 40px;
}
.forum-topics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.forum-topic {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 34px 32px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .28s var(--ease), border-color .28s, box-shadow .28s;
}
.forum-topic::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: linear-gradient(180deg, var(--teal), transparent);
  transform: scaleY(0); transform-origin: top;
  transition: transform .4s var(--ease);
}
.forum-topic:hover {
  transform: translateY(-5px);
  border-color: rgba(0,168,121,.34);
  box-shadow: var(--shadow-sm);
}
.forum-topic:hover::before { transform: scaleY(1); }

.forum-topic-num {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(34px, 4vw, 50px); line-height: 1;
  color: rgba(0,168,121,.28);
  margin-bottom: 16px; letter-spacing: -.02em;
}
.forum-topic-title { font-size: 22px; line-height: 1.25; margin-bottom: 10px; }
.forum-topic-speaker { font-size: 14px; font-weight: 600; color: var(--teal-deep); margin-bottom: 8px; }
.forum-topic-text { color: var(--soft-ink); font-size: 16px; }
.forum-topic-time {
  align-self: flex-start; margin-top: 16px;
  font-size: 13px; font-weight: 700; color: var(--teal-deep);
  padding: 4px 12px; background: rgba(0,168,121,.08); border-radius: 50px;
}

.forum-topics .reveal:nth-child(2) { transition-delay: 70ms; }
.forum-topics .reveal:nth-child(3) { transition-delay: 140ms; }
.forum-topics .reveal:nth-child(4) { transition-delay: 210ms; }

.forum-cta {
  position: relative;
  margin-top: 48px;
  padding: 92px 0;
  overflow: hidden;
  text-align: left;
  background:
    radial-gradient(circle at 50% 0%, rgba(54,208,170,.16), transparent 44%),
    linear-gradient(180deg, var(--white), var(--paper-2));
  border-top: 1px solid var(--line);
}
.forum-cta-inner { max-width: 640px; margin: 0; }
.forum-cta h2 { font-size: clamp(28px, 3.6vw, 46px); line-height: 1.12; }
.forum-cta p { margin: 16px 0 30px; color: var(--soft-ink); font-size: clamp(17px, 2vw, 20px); max-width: 500px; }

@media (max-width: 768px) {
  .forum-hero { padding: 140px 0 64px; }
  .forum-topics { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .forum-section { padding: 56px 0 28px; }
  .forum-topic { padding: 28px 24px; }
  .forum-cta { padding: 64px 0; }
}