/* ria.com.ai only: hero relay (You ⇄ Ria ⇄ Business), era timeline, 5-step engine, visa example. */
.relay { position: relative; display: grid; gap: 14px; max-width: 460px; margin: 0 0 0 auto; padding-bottom: 96px; }
.relay .node { position: relative; animation: none; width: auto; }
.relay .node.side { background: rgba(24,24,27,.82); border: 1px solid #2E2E33; border-radius: 20px; padding: 18px 20px; color: var(--on-dark); }
.relay .node .k { font-family: var(--mono); font-size: 10px; letter-spacing: .14em; color: #8E8E93; display: flex; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.relay .node .k .ok { color: #3FB97A; }
.relay .node .say { background: var(--on-dark); color: var(--ink); border-radius: 16px 16px 6px 16px; padding: 10px 14px; font-size: 14px; display: inline-block; }
.relay .node.ria { background: var(--surface); color: var(--ink); border-radius: 22px; padding: 18px 20px; box-shadow: 0 30px 80px rgba(0,0,0,.5); }
.relay .node.ria .who { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.relay .node.ria .who img { width: 30px; height: 30px; }
.relay .node.ria .who b { font-size: 15px; }
.relay .node.ria .task { border: 0; padding: 0; }
.relay .link { display: flex; align-items: center; justify-content: center; gap: 10px; font-family: var(--mono); font-size: 10px; letter-spacing: .14em; color: #6E6E73; }
.relay .link::before, .relay .link::after { content: ""; flex: 1; height: 1px; background: repeating-linear-gradient(90deg, #3A3A3F 0 4px, transparent 4px 8px); }
.relay .biz b { display: block; font-size: 17px; margin-bottom: 2px; }
.relay .biz small { color: #A1A1AA; }

/* three eras */
.eras { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.era { border-radius: var(--r-lg); padding: 32px; border: 1px solid var(--line); background: var(--surface); display: flex; flex-direction: column; }
.era .yr { font-family: var(--mono); font-size: 12px; letter-spacing: .14em; color: var(--subtle); margin-bottom: 28px; }
.era p { margin: 0 0 22px; color: var(--muted); font-size: 16px; }
.era .q { margin-top: auto; font-size: 15px; border-top: 1px solid var(--line-soft); padding-top: 18px; color: var(--ink); }
.era .q span { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: .14em; color: var(--subtle); margin-bottom: 6px; }
.era.now { background: var(--action); color: var(--on-dark); border-color: var(--action); }
.era.now .yr, .era.now .q span { color: #8E8E93; }
.era.now p { color: #B4B4BA; }
.era.now .q { color: var(--on-dark); border-color: #2A2A2E; }
.era .out { display: inline-flex; margin-top: 10px; }

/* engine: 5 steps with the capability pool */
.engine { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.engine .st { background: var(--night-2); border: 1px solid var(--night-line); border-radius: 22px; padding: 24px 20px; }
.engine .st .n { font-family: var(--mono); font-size: 12px; color: #6E6E73; display: block; margin-bottom: 30px; }
.engine .st h3 { font-size: 18px; }
.engine .st p { margin: 0; color: var(--night-muted); font-size: 14.5px; }
.engine .st.pool { grid-column: span 1; }
.pool-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 20px; }
.pool-grid .card ul { list-style: none; margin: 16px 0 0; padding: 0; display: grid; gap: 10px; }
.pool-grid .card li { display: flex; justify-content: space-between; gap: 12px; border-top: 1px solid var(--night-line); padding-top: 10px; font-size: 15px; }
.pool-grid .card li span { color: var(--night-muted); text-align: right; }
.loop { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 20px; }

/* visa example */
.visa { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.visa .side { border-radius: var(--r-lg); padding: 36px; }
.visa .slow { background: var(--surface); border: 1px dashed #D4D4D8; }
.visa .fast { background: var(--surface); border: 1px solid var(--line); }
.visa .big { font-size: clamp(44px, 5vw, 64px); font-weight: 800; letter-spacing: -.04em; line-height: 1; margin: 14px 0 22px; }
.visa .slow .big { color: var(--subtle); }
.visa ol { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; counter-reset: s; }
.visa ol li { counter-increment: s; display: grid; grid-template-columns: 28px 1fr; gap: 10px; color: var(--muted); }
.visa ol li::before { content: counter(s); font-family: var(--mono); font-size: 12px; width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; border: 1px solid var(--line); color: var(--subtle); margin-top: 2px; }
.visa ol li b { color: var(--ink); display: block; }

/* two doors */
.doors { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 48px; text-align: left; }
.door { display: block; text-decoration: none; border-radius: var(--r-lg); padding: 36px; border: 1px solid var(--line); background: var(--surface); transition: transform .25s var(--ease), border-color .25s; }
.door:hover { transform: translateY(-4px); border-color: var(--ink); }
.door .dom { font-family: var(--mono); font-size: 12px; letter-spacing: .12em; color: var(--subtle); }
.door h3 { font-size: 28px; margin: 18px 0 10px; }
.door p { margin: 0 0 24px; color: var(--muted); }
.door .go { font-weight: 700; }
.door.dark { background: var(--action); color: var(--on-dark); border-color: var(--action); }
.door.dark p, .door.dark .dom { color: #A1A1AA; }

@media (max-width: 1080px) {
  .relay { margin: 0 auto; }
  .engine { grid-template-columns: 1fr 1fr; }
  .engine .st:last-child { grid-column: 1 / -1; }
}
@media (max-width: 760px) {
  .eras, .pool-grid, .loop, .visa, .doors, .engine { grid-template-columns: 1fr; }
  .relay { padding-bottom: 56px; }
  .visa .side, .era, .door { padding: 26px; }
}
.relay .biz { opacity: .35; transform: translateY(6px); transition: opacity .5s var(--ease), transform .5s var(--ease); }
.relay .biz.show { opacity: 1; transform: none; }
.com-hero .grid { align-items: center; }
.com-hero .copy { padding-bottom: 96px; }
.com-hero h1 { font-size: clamp(44px, 6.2vw, 92px); }
.com-hero .relay { padding: 0 0 96px; }
.relay .node.ria .chip { background: var(--app); color: var(--ink); border-color: var(--line); }
@media (max-width: 1080px) { .com-hero .copy { padding-bottom: 32px; } }
.com-hero h1 { font-size: clamp(40px, 5.4vw, 80px); }
/* tablet/phone: one column, and room under the relay visual */
@media (max-width: 1080px) { .com-hero .grid { grid-template-columns: 1fr; } .com-hero .relay { padding-bottom: 72px; } }