:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --line: #dbe4f0;
  --text: #1f2a37;
  --muted: #5f6b7a;
  --bubble: #ffffff;
  --bubble-accent: #F8F8FF;
  --title: #0b4f9e;
}

* {
  box-sizing: border-box;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: clamp(16px, 2.6vw, 26px);
  margin-bottom: 18px;
}

.panelchat {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: clamp(16px, 2.6vw, 26px);
  margin-bottom: 18px;
  display: grid;
  gap: 12px;
}

.section-title {
  margin: 0;
  font-size: clamp(1rem, 2.1vw, 1.2rem);
  background: #e8f3ff;
  /* background: #e3f3e9;*/
  color: #154f93; 
  /*  color: #1c5a38; */
  border: 3px solid #154f93; 
  /*  border: 1px solid #b9dcc7; */
  border-radius: 12px;
  padding: 10px 12px;
  text-align: center;
}

p {
  margin: 0;
}

.stack {
  display: grid;
  gap: 14px;
}

.participant-grid {
  display: grid;
  gap: 12px;
}

.participant {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  background: #f7fbff;
  border: 1px solid #d8e6f7;
}

.avatar {
  width: 64px;
  height: 64px;
  min-width: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid #fff;
  box-shadow: 0 3px 8px rgba(10, 50, 92, 0.25);
}

.participant-text {
  font-size: clamp(0.95rem, 1.7vw, 1.05rem);
  line-height: 1.6;
}

.section-label {
  background: transparent;
  /* color: #1f6f46; */
  color: #154f93;
  border: none;
  border-radius: 0;
  padding: 0;
  font-weight: 700;
}

.chat {
  display: grid;
  gap: 12px;
}

.message {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.intro-marker {
  justify-content: center;
}

.intro-marker .bubble {
  background: #eaf7ef;
  border-color: #c7e4d2;
  text-align: center;
}

.intro-chat .bubble {
  background: #eaf7ef;
  border-color: #c7e4d2;
}

.bubble {
  width: fit-content;
  max-width: min(760px, calc(100vw - 150px));
  background: var(--bubble);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 12px;
}

.name {
  display: block;
  margin-bottom: 6px;
  font-size: 0.94em;
  font-weight: 800;
  color: #0b3d24;
}

.accent .bubble {
  background: var(--bubble-accent);
  border-color: #c8def6;
}

.note {
  background: #fffef7;
  border: 1px solid #f0e2a9;
  border-radius: 12px;
  padding: 10px 12px;
}

hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 4px 0;
}

.nav-card {
  display: block;
  text-decoration: none;
  background: var(--title);
  color: #ffffff;
  border: 1px solid var(--title);
  border-radius: 16px;
  padding: clamp(16px, 2.6vw, 26px);
  margin-bottom: 18px;
  text-align: center;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.nav-card:hover,
.nav-card:focus-visible {
  background: #0a3f80;
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(11, 79, 158, 0.35);
}

.nav-card-label {
  display: block;
  font-weight: 800;
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
}

.nav-card-sub {
  display: block;
  margin-top: 6px;
  font-size: clamp(0.9rem, 1.8vw, 1.05rem);
  color: #dceaff;
}

@media (max-width: 1024px) {
  .page {
    width: min(900px, 100%);
  }

  .avatar {
    width: 58px;
    height: 58px;
    min-width: 58px;
  }

  .bubble {
    max-width: calc(100vw - 130px);
  }
}

@media (max-width: 768px) {
  body {
    font-size: clamp(15px, 4.1vw, 18px);
  }

  .panel {
    border-radius: 14px;
  }

  .panelchat {
    border-radius: 14px;
  }

  .participant {
    align-items: flex-start;
  }

  .avatar {
    width: 52px;
    height: 52px;
    min-width: 52px;
  }

  .bubble {
    max-width: calc(100vw - 95px);
  }
}