/* Shared Riftborn sub-site shell. */
.riftborn-page {
  --rb-panel: #141419;
  --rb-panel-2: #19191f;
  --rb-soft-line: rgba(255, 255, 255, .07);
  min-width: 0;
  overflow-x: clip;
  background:
    radial-gradient(900px 560px at 86% 16%, rgba(230, 58, 46, .055), transparent 70%),
    #09090b;
}

.rb-subnav {
  position: sticky;
  top: var(--ttg-nav-height, 69px);
  z-index: 45;
  border-bottom: 1px solid var(--line);
  background: rgba(9, 9, 11, .9);
  box-shadow: 0 14px 36px rgba(0, 0, 0, .16);
  backdrop-filter: blur(18px) saturate(120%);
  -webkit-backdrop-filter: blur(18px) saturate(120%);
}
.rb-subnav-inner {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  min-height: 52px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scrollbar-width: none;
}
.rb-subnav-inner::-webkit-scrollbar { display: none; }
.rb-subnav a {
  position: relative;
  flex: 0 0 auto;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: 99px;
  color: var(--muted);
  font: 600 11px/1.2 'IBM Plex Mono', monospace;
  letter-spacing: .075em;
  text-decoration: none;
  transition: color .22s ease, background .22s ease, border-color .22s ease, transform .22s ease;
}
.rb-subnav a:hover { color: var(--text); border-color: var(--line); transform: translateY(-1px); }
.rb-subnav a[aria-current="page"] { color: #111; background: var(--text); border-color: var(--text); }

.rb-page-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 90px 0 62px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(110deg, rgba(230, 58, 46, .08), transparent 44%),
    radial-gradient(780px 390px at 7% 0%, rgba(230, 58, 46, .17), transparent 70%),
    #0b0b0e;
}
.rb-page-hero::before {
  content: '';
  position: absolute;
  z-index: -1;
  inset: 0;
  opacity: .2;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 70px 70px;
  mask-image: linear-gradient(90deg, black, transparent 78%);
}
.rb-page-hero::after {
  content: '';
  position: absolute;
  z-index: -1;
  right: -180px;
  bottom: -390px;
  width: 650px;
  height: 650px;
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 50%;
  box-shadow: 0 0 0 70px rgba(255,255,255,.015), 0 0 0 140px rgba(255,255,255,.012);
  pointer-events: none;
}
.rb-page-hero .wrap { position: relative; z-index: 1; }
.rb-page-hero .mono { display: block; margin-bottom: 17px; }
.rb-page-hero h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(44px, 6.7vw, 88px);
  font-weight: 900;
  line-height: .91;
  letter-spacing: -.05em;
  text-wrap: balance;
}
.rb-page-hero p {
  max-width: 730px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.64;
  text-wrap: pretty;
}

.rb-section { padding: 82px 0; border-top: 1px solid var(--line); }
.rb-page-hero + .rb-section { border-top: 0; }
.rb-section--muted { background: linear-gradient(180deg, #101014, #0e0e12); }
.rb-section h2 { margin: 0; font-size: clamp(31px, 4vw, 54px); font-weight: 900; line-height: .97; letter-spacing: -.04em; text-wrap: balance; }
.rb-section h3 { margin: 0; }
.rb-section .mono { display: block; margin-bottom: 15px; }
.rb-section-lede { max-width: 740px; margin: 20px 0 0; color: var(--muted); font-size: 17px; line-height: 1.66; text-wrap: pretty; }
.rb-split-head { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 36px; }
.rb-split-head .rb-section-lede { margin: 0; }

.rb-action-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.rb-action-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 260px;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  overflow: hidden;
  padding: 27px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(255,255,255,.07), transparent 54%), var(--rb-panel);
  color: var(--text);
  text-decoration: none;
  transition: transform .35s cubic-bezier(.22,1,.36,1), border-color .3s ease, box-shadow .35s ease;
}
.rb-action-card::before { content: attr(data-number); position: absolute; top: 12px; right: 16px; color: rgba(255,255,255,.12); font: 800 76px/1 'Archivo', sans-serif; transition: transform .35s ease, color .35s ease; }
.rb-action-card::after { content: ''; position: absolute; inset: auto 0 0; height: 2px; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .35s ease; }
.rb-action-card:hover { transform: translateY(-6px); border-color: rgba(255,255,255,.28); box-shadow: 0 24px 54px rgba(0,0,0,.34); }
.rb-action-card:hover::before { color: color-mix(in srgb, var(--accent) 34%, transparent); transform: translateY(4px); }
.rb-action-card:hover::after { transform: scaleX(1); }
.rb-action-card > span { color: var(--accent); font: 600 10px 'IBM Plex Mono', monospace; letter-spacing: .11em; }
.rb-action-card h3 { margin: 14px 0 10px; font-size: 27px; letter-spacing: -.03em; }
.rb-action-card p { max-width: 310px; margin: 0; color: var(--muted); font-size: 14px; line-height: 1.56; }
.rb-action-card i { display: block; margin-top: 22px; color: var(--text); font-style: normal; font-weight: 700; }

.rb-trait { display: inline-flex; align-items: center; gap: 6px; padding: 5px 8px; border: 1px solid color-mix(in srgb, var(--trait) 45%, transparent); background: color-mix(in srgb, var(--trait) 10%, transparent); color: color-mix(in srgb, var(--trait) 85%, white); font: 600 10px/1 'IBM Plex Mono', monospace; letter-spacing: .045em; }
.rb-trait img { width: 14px; height: 14px; object-fit: contain; }
.rb-empty { margin: 28px 0 0; color: var(--muted); }
.rb-loading { padding: 40px 0; color: var(--muted); font-family: 'IBM Plex Mono', monospace; }
.rb-subtle-link { color: var(--text); text-decoration-color: rgba(255,255,255,.4); text-underline-offset: 4px; }
.rb-footer-cta { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 52px; border: 1px solid var(--line); border-radius: 16px; background: radial-gradient(500px 240px at 82% 100%, color-mix(in srgb, var(--accent) 20%, transparent), transparent 72%), var(--rb-panel); box-shadow: inset 0 1px rgba(255,255,255,.025); }
.rb-footer-cta h2 { max-width: 650px; }
.rb-footer-cta p { max-width: 670px; margin: 14px 0 0; color: var(--muted); line-height: 1.6; }

@media (max-width: 900px) {
  .rb-action-grid { grid-template-columns: 1fr; }
  .rb-action-card { min-height: 190px; }
  .rb-footer-cta { display: block; padding: 34px; }
  .rb-footer-cta .btn { margin-top: 26px; }
}
@media (max-width: 600px) {
  .rb-subnav-inner { min-height: 48px; padding: 0 18px; }
  .rb-subnav a { padding: 8px 10px; font-size: 10px; }
  .rb-subnav-inner { mask-image: linear-gradient(90deg, transparent 0, black 16px, black calc(100% - 16px), transparent 100%); }
  .rb-page-hero { padding: 66px 0 46px; }
  .rb-page-hero p { font-size: 16px; }
  .rb-section { padding: 60px 0; }
  .rb-split-head { display: block; }
  .rb-split-head .rb-section-lede { margin-top: 18px; }
  .rb-footer-cta { padding: 28px 22px; }
}
@media (prefers-reduced-motion: reduce) {
  .rb-subnav a, .rb-action-card, .rb-action-card::before, .rb-action-card::after { transition: none; }
}