/* Platform guide (/ghid/): step cards with CSS-only animated demos. All motion is decorative
   (aria-hidden) and disabled under prefers-reduced-motion. */
.guide { max-width: 56rem; margin: 0 auto; }
.guide-hero { display: grid; gap: 1.5rem; align-items: center; padding: 1.5rem 0 1rem; }
.guide-hero .dragonfly { width: min(11rem, 50%); }
.guide-hero h1 { margin: 0.5rem 0; }
.step-nav { position: sticky; top: 0; z-index: 5; display: flex; gap: 0.5rem; overflow-x: auto; padding: 0.5rem 0; margin-bottom: 1rem; background: var(--canvas); scrollbar-width: none; }
.step-nav::-webkit-scrollbar { display: none; }
.step-nav a { flex: 0 0 auto; text-decoration: none; color: var(--text); border: 1px solid var(--border-strong); border-radius: 9999px; padding: 0.375rem 0.75rem; font-weight: 600; font-size: 14px; }
.step-nav a.active { background: var(--primary); border-color: var(--primary); color: var(--white); }
.step { scroll-margin-top: 4rem; }
.step-head { display: flex; align-items: center; gap: 0.75rem; }
.step-head h2 { margin: 0; font-size: 1.375rem; }
.step-num { flex: 0 0 auto; width: 2rem; height: 2rem; border-radius: 50%; display: grid; place-items: center; background: var(--secondary); color: #1f1f1f; font-weight: 800; }
.guide .lead { font-size: 1.0625rem; margin: 0.75rem 0; }
.points { margin: 0 0 1rem; padding-left: 1.25rem; color: var(--text); }
.points li { margin-bottom: 0.375rem; }
.checklist ol { list-style: none; margin: 0.75rem 0 0; padding: 0; display: grid; gap: 0.5rem; }
.checklist li { display: flex; align-items: center; gap: 0.75rem; padding: 0.5rem 0.75rem; border: 1px solid var(--border); border-radius: var(--radius); flex-wrap: wrap; }
.checklist li.done { opacity: 0.7; }
.checklist li.next { border-color: var(--secondary); box-shadow: 0 0 0 1px var(--secondary) inset; }
.checklist .mark { width: 1.75rem; height: 1.75rem; border-radius: 50%; display: grid; place-items: center; background: var(--overlay); font-weight: 700; flex: 0 0 auto; }
.checklist li.done .mark { background: #3ddc84; color: #0b1b2b; }
.checklist .label { flex: 1 1 12rem; }
.checklist .state { font-size: 13px; color: var(--muted); }
.btn.small { width: auto; min-height: 36px; padding: 0.25rem 0.875rem; font-size: 14px; }
.faq { border-top: 1px solid var(--border); padding: 0.75rem 0; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { margin: 0.5rem 0 0; color: var(--muted); }
:focus-visible { outline: 2px solid var(--secondary); outline-offset: 2px; }

/* demos */
.demo { margin: 1rem 0 0; background: var(--canvas); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1rem; overflow: hidden; }
.demo figcaption { margin-top: 0.75rem; font-size: 14px; color: var(--muted); }
.demo-stage { display: flex; align-items: center; justify-content: center; gap: 1rem; flex-wrap: wrap; min-height: 7rem; }
.who { display: flex; flex-direction: column; align-items: center; gap: 0.125rem; }
.who small { color: var(--muted); font-size: 12px; }
.avatar-sm { width: 2.5rem; height: 2.5rem; border-radius: 50%; display: grid; place-items: center; background: var(--primary); color: var(--white); font-weight: 700; }
.avatar-sm.alt { background: var(--secondary); color: #1f1f1f; }
.link { display: flex; gap: 0.375rem; }
.link i { width: 0.5rem; height: 0.5rem; border-radius: 50%; background: var(--primary); animation: blink 1.6s infinite; }
.link i:nth-child(2) { animation-delay: 0.25s; } .link i:nth-child(3) { animation-delay: 0.5s; }
@keyframes blink { 0%, 100% { opacity: 0.2; } 50% { opacity: 1; } }
.hidden-list { list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center; padding: 0; margin: 0.75rem 0 0; }
.hidden-list li { position: relative; padding: 0.25rem 0.625rem; border-radius: 9999px; background: var(--overlay); color: var(--muted); text-decoration: line-through; animation: lock 4s infinite; animation-delay: calc(var(--n) * 0.5s); }
.hidden-list li::after { content: " 🔒"; }
@keyframes lock { 0%, 100% { opacity: 0.55; } 50% { opacity: 1; box-shadow: 0 0 0 2px rgba(140, 118, 196, 0.45); } }
.demo-profile .demo-stage { flex-direction: column; align-items: stretch; }
.mock-row { display: flex; align-items: center; gap: 0.75rem; padding: 0.375rem 0; border-bottom: 1px dashed var(--border); flex-wrap: wrap; }
.mock-row > span:first-child { flex: 0 0 8rem; color: var(--muted); font-size: 14px; }
.typed { display: inline-block; overflow: hidden; white-space: nowrap; border-right: 2px solid var(--secondary); width: 0; animation: typing 14s steps(4) infinite; }
@keyframes typing { 0%, 4% { width: 0; } 14%, 90% { width: 2.6em; } 96%, 100% { width: 0; } }
.select { padding: 0.125rem 0.625rem; border: 1px solid var(--border-strong); border-radius: var(--radius); }
.range { position: relative; width: 8rem; height: 0.5rem; border-radius: 9999px; background: var(--overlay); overflow: hidden; }
.range b { position: absolute; left: 20%; height: 100%; width: 0; background: var(--primary); border-radius: 9999px; animation: grow 14s infinite; }
@keyframes grow { 0%, 20% { width: 0; } 34%, 90% { width: 45%; } 96%, 100% { width: 0; } }
.mock-row em { font-style: normal; color: var(--secondary); font-weight: 700; }
.chips u, .ticks u { text-decoration: none; display: inline-block; margin: 0.125rem 0.25rem 0.125rem 0; padding: 0.125rem 0.625rem; border-radius: 9999px; background: rgba(140, 118, 196, 0.3); font-size: 13px; opacity: 0; animation: ap2 14s infinite; animation-delay: calc(var(--n) * 0.8s); }
.check b { display: inline-grid; place-items: center; width: 1.25rem; height: 1.25rem; border-radius: 4px; background: var(--secondary); color: #1f1f1f; margin-right: 0.375rem; animation: ap5 14s infinite; }
.mini-card { background: var(--card); border: 1px solid var(--border-strong); border-radius: var(--radius-lg); padding: 0.875rem 1rem; max-width: 22rem; width: 100%; animation: slide-in 7s ease-out infinite; }
.mini-card p { margin: 0.375rem 0; }
.mini-card .bio { font-size: 1.0625rem; color: var(--white); }
.pill { display: inline-block; background: rgba(140, 118, 196, 0.3); color: #c9b8f5; font-size: 12px; font-weight: 800; letter-spacing: 0.04em; padding: 0.125rem 0.625rem; border-radius: 9999px; }
@keyframes slide-in { 0% { opacity: 0; transform: translateY(24px); } 12%, 90% { opacity: 1; transform: none; } 100% { opacity: 0; } }
.ticks u { animation: ap3 7s infinite; background: rgba(61, 220, 132, 0.2); color: #8ff0b8; }
.demo-request .demo-stage { flex-wrap: nowrap; }
.track { position: relative; flex: 1 1 6rem; max-width: 16rem; height: 2rem; border-bottom: 2px dashed var(--border-strong); }
.env { position: absolute; left: 0; top: -0.25rem; font-size: 1.5rem; animation: fly 4s ease-in-out infinite; }
@keyframes fly { 0% { left: 0; opacity: 0; } 10% { opacity: 1; } 80% { left: calc(100% - 1.5rem); opacity: 1; } 100% { left: calc(100% - 1.5rem); opacity: 0; } }
.bubble-demo { margin: 0.75rem auto 0; max-width: 22rem; background: rgba(140, 118, 196, 0.25); border-radius: 1.125rem 1.125rem 0.25rem 1.125rem; padding: 0.5rem 0.875rem; animation: ap1 7s infinite; }
.demo-respond .demo-stage { position: relative; min-height: 9rem; }
.demo-respond .state { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.demo-respond .state p { margin: 0.25rem 0; }
.s-ask { animation: state-a 8s infinite; } .s-ok { animation: state-b 8s infinite; font-size: 1.125rem; }
@keyframes state-a { 0%, 45% { opacity: 1; } 55%, 100% { opacity: 0; } }
@keyframes state-b { 0%, 45% { opacity: 0; transform: scale(0.95); } 55%, 92% { opacity: 1; transform: none; } 100% { opacity: 0; } }
.btn-row { display: flex; gap: 0.5rem; margin-top: 0.5rem; justify-content: center; }
.mini-btn { padding: 0.25rem 0.75rem; border: 1px solid var(--border-strong); border-radius: 9999px; font-size: 14px; font-weight: 600; }
.mini-btn.ok { background: var(--secondary); border-color: var(--secondary); color: #1f1f1f; animation: press 8s infinite; }
@keyframes press { 0%, 38% { transform: none; } 42% { transform: scale(0.92); } 48%, 100% { transform: none; } }
.window { flex: 1 1 14rem; min-height: 12rem; background: var(--card); border: 1px solid var(--border-strong); border-radius: var(--radius-lg); padding: 0.75rem; display: flex; flex-direction: column; gap: 0.5rem; }
.window.phone { border-radius: 1.5rem; }
.win-title { font-size: 12px; color: var(--muted); font-weight: 700; }
.demo-telegram .window { max-width: 20rem; width: 100%; min-height: 14rem; }
.b { max-width: 90%; padding: 0.375rem 0.75rem; border-radius: 1rem 1rem 1rem 0.25rem; background: var(--overlay); font-size: 14px; opacity: 0; }
.b.mine { align-self: flex-end; border-radius: 1rem 1rem 0.25rem 1rem; background: rgba(140, 118, 196, 0.35); }
.b1 { animation: ap1 14s infinite; } .b2 { animation: ap2 14s infinite; } .b3 { animation: ap3 14s infinite; } .b4 { animation: ap4 14s infinite; }
.presence-cycle { position: relative; width: 8rem; height: 2rem; font-weight: 700; }
.ps { position: absolute; inset: 0; display: flex; align-items: center; gap: 0.5rem; opacity: 0; }
.p1 { animation: cyc1 9s infinite; } .p2 { animation: cyc2 9s infinite; } .p3 { animation: cyc3 9s infinite; }
@keyframes cyc1 { 0%, 28% { opacity: 1; } 33%, 100% { opacity: 0; } }
@keyframes cyc2 { 0%, 30% { opacity: 0; } 35%, 61% { opacity: 1; } 66%, 100% { opacity: 0; } }
@keyframes cyc3 { 0%, 63% { opacity: 0; } 68%, 95% { opacity: 1; } 100% { opacity: 0; } }
.dot { width: 0.75rem; height: 0.75rem; border-radius: 50%; display: inline-block; }
.dot.on { background: #3ddc84; } .dot.busy { background: #ff9f43; } .dot.off { background: #8a8f98; }
.demo-control .demo-stage { flex-direction: column; }
@media (min-width: 768px) { .guide-hero { grid-template-columns: 1.4fr 1fr; } }
@media (prefers-reduced-motion: reduce) {
  .demo *, .demo { animation: none !important; }
  .b, .chips u, .ticks u, .bubble-demo, .check b { opacity: 1 !important; transform: none !important; }
  .typed { width: auto; border-right: 0; }
  .range b { width: 45%; }
  .ps { opacity: 0 !important; } .p1 { opacity: 1 !important; }
  .demo-respond .state { position: static; } .s-ok { display: none; }
  .env { position: static; opacity: 1; }
}

@keyframes ap1 { 0%, 6% { opacity: 0; transform: translateY(8px) scale(0.96); } 10%, 90% { opacity: 1; transform: none; } 96%, 100% { opacity: 0; transform: translateY(8px) scale(0.96); } }
@keyframes ap2 { 0%, 22% { opacity: 0; transform: translateY(8px) scale(0.96); } 26%, 90% { opacity: 1; transform: none; } 96%, 100% { opacity: 0; transform: translateY(8px) scale(0.96); } }
@keyframes ap3 { 0%, 38% { opacity: 0; transform: translateY(8px) scale(0.96); } 42%, 90% { opacity: 1; transform: none; } 96%, 100% { opacity: 0; transform: translateY(8px) scale(0.96); } }
@keyframes ap4 { 0%, 54% { opacity: 0; transform: translateY(8px) scale(0.96); } 58%, 90% { opacity: 1; transform: none; } 96%, 100% { opacity: 0; transform: translateY(8px) scale(0.96); } }
@keyframes ap5 { 0%, 70% { opacity: 0; transform: translateY(8px) scale(0.96); } 74%, 90% { opacity: 1; transform: none; } 96%, 100% { opacity: 0; transform: translateY(8px) scale(0.96); } }