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@media(max-width:760px){.mobile-logout{display:block;margin-left:auto}.topbar{flex-wrap:wrap;gap:6px 14px}.pilot-label,.auth-page .topbar .pilot-label{order:3;width:100%;max-width:none;font-size:.63rem}.auth-page .mobile-logout{margin-left:auto}.compact-brand{min-height:40px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}
.brand{display:flex;flex-direction:column;align-items:flex-start;gap:8px}.brand-logo{display:block;width:174px;height:auto;background:white;border-radius:8px;padding:9px}.brand-caption{font-size:.7rem;letter-spacing:.15em;text-transform:uppercase;color:#d1e6db}.compact-logo{display:block;width:92px;height:auto}.footer-logo{width:80px;vertical-align:middle}.tour-open{min-height:44px;border:1px solid #b8cfc1;border-radius:9px;padding:8px 12px;background:#fff;color:var(--deep);font:inherit;font-size:.75rem;cursor:pointer}.tour-spotlight{position:fixed;z-index:200;pointer-events:none;border:2px solid #dbbc6b;border-radius:12px;box-shadow:0 0 0 9999px #17211de0}.tour-dialog{position:fixed;z-index:201;right:24px;bottom:24px;width:min(430px,calc(100vw - 32px));padding:24px;border:1px solid var(--line);border-radius:16px;background:white;box-shadow:0 20px 70px #0004}.tour-dialog h2{font-size:1.15rem}.tour-dialog p{font-size:.9rem}.tour-controls{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px;margin-top:18px}[hidden]{display:none!important}@media(max-width:760px){.tour-open{margin-left:auto;font-size:.7rem}.tour-dialog{right:16px;bottom:16px;padding:20px}.tour-controls .button{font-size:.75rem;padding:8px 11px}.compact-brand span{font-size:.65rem}.compact-logo{width:76px}}
.learning-route{margin-bottom:24px}.route-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:20px 0;padding:0;list-style:none;counter-reset:route}.route-steps li{padding:14px;border:1px solid var(--line);border-radius:10px;background:#f8fbf8;counter-increment:route}.route-steps strong,.route-steps span{display:block;font-size:.78rem}.route-steps strong:before{content:counter(route) '. ';color:var(--green)}.route-steps span{margin-top:8px;font-size:.72rem;color:var(--muted)}@media(max-width:980px){.route-steps{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:520px){.route-steps{grid-template-columns:1fr}}

/* RU / Simplified Chinese interface selector; no content translation. */
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.topbar{flex-wrap:wrap}.language-switcher{display:flex;align-items:center;gap:5px;margin-left:auto;flex:0 0 auto}.language-switcher select,.language-switcher button{font:inherit;font-size:12px;min-height:44px;border:1px solid var(--line);border-radius:8px;color:var(--deep);background:white;padding:7px 9px}.language-switcher button{cursor:pointer}.language-switcher+ .tour-open{margin-left:0}html[lang^="zh"] body{font-family:Inter,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif}html[lang^="zh"] .eyebrow,html[lang^="zh"] .sidebar-caption{letter-spacing:.04em}html[lang^="zh"] .mobile-nav a{line-height:1.45}.voice-language-note{max-width:38rem;color:var(--gold)}
@media(max-width:760px){.language-switcher{margin-left:auto;gap:4px}.language-switcher select,.language-switcher button{min-height:44px;font-size:12px;padding:6px}.topbar .tour-open{order:4}.topbar .pilot-label{order:5}.topbar-user{margin-left:0}.language-switcher+.tour-open{margin-left:0}html[lang^="zh"] .mobile-nav a{font-size:.61rem}.mobile-nav .nav-symbol{display:block}}