* {
  box-sizing: border-box;
}

:root {
  --bg: #f7f7fb;
  --card: #ffffff;
  --accent: #3366ff;
  --accent-soft: #e6edff;
  --text-main: #111111;
  --text-muted: #555555;
  --border-soft: #e0e0f0;
  --radius-lg: 14px;
  --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.08);
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  background: radial-gradient(circle at top, #eef1ff 0, #f7f7fb 35%, #f9fafb 100%);
  color: var(--text-main);
}

a {
  color: inherit;
  text-decoration: none;
}

.page-shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 16px 40px;
}

/* Header & Nav */

header {
  margin-bottom: 20px;
}

.top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, #ffb347, #ff6b81);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  color: #fff;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.18);
}

.brand-text-main {
  font-size: 1.2rem;
  font-weight: 700;
}

.brand-tagline {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.nav-links a {
  font-size: 0.88rem;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--text-muted);
  transition: 0.18s ease;
}

.nav-links a:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.nav-links a.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* Hero / Intro */

.hero {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 18px;
  padding: 22px 20px 20px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border-soft);
  margin-bottom: 22px;
}

.hero-kicker {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 4px;
}

.hero-title {
  font-size: 1.6rem;
  font-weight: 750;
  margin: 0 0 6px;
}

.hero-sub {
  font-size: 0.98rem;
  color: var(--text-muted);
  max-width: 640px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.hero-badge {
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(51, 102, 255, 0.15);
}

/* Layout */

.layout {
  display: grid;
  grid-template-columns: minmax(0, 2.2fr) minmax(0, 1.3fr);
  gap: 18px;
}

@media (max-width: 860px) {
  .layout {
    grid-template-columns: minmax(0, 1fr);
  }
}

.card {
  background: rgba(255, 255, 255, 0.97);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 16px 16px 18px;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.06);
}

.card + .card {
  margin-top: 12px;
}

.card h1,
.card h2,
.card h3 {
  margin-top: 0;
}

.card h1 {
  font-size: 1.25rem;
  margin-bottom: 6px;
}

.card h2 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.card h3 {
  font-size: 0.98rem;
  margin-bottom: 4px;
}

.card p {
  font-size: 0.93rem;
  margin: 0 0 8px;
  color: var(--text-main);
}

.card p.muted {
  color: var(--text-muted);
}

.card ul {
  padding-left: 18px;
  margin: 6px 0 8px;
  font-size: 0.92rem;
}

.card li {
  margin-bottom: 4px;
}

/* Session list */

.session-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.session-card {
  border-radius: 12px;
  border: 1px solid var(--border-soft);
  padding: 10px 10px 12px;
  background: #ffffff;
  transition: 0.18s ease;
}

.session-card:hover {
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.08);
  transform: translateY(-1px);
  border-color: var(--accent-soft);
}

.session-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 2px;
}

.session-title {
  font-size: 0.96rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.session-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Side column */

.side-heading {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 6px;
}

.tag-pill {
  font-size: 0.78rem;
  padding: 3px 9px;
  border-radius: 999px;
  background: #f1f1fb;
  border: 1px solid var(--border-soft);
}

/* Footer */

footer {
  margin-top: 26px;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

footer a {
  color: var(--accent);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* Simple form */

form label {
  display: block;
  font-size: 0.88rem;
  margin-top: 6px;
  margin-bottom: 2px;
}

input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border-soft);
  padding: 8px 10px;
  font-size: 0.9rem;
  font-family: inherit;
  resize: vertical;
}

textarea {
  min-height: 110px;
}

button.btn-primary {
  margin-top: 10px;
  border: none;
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(51, 102, 255, 0.35);
  transition: 0.16s ease;
}

button.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(51, 102, 255, 0.4);
}

/* Simple breadcrumb */

.breadcrumb {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.breadcrumb a {
  color: var(--accent);
}

/* Content helpers */

.lead {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}