.nav-tour{position:fixed;inset:0;z-index:900;pointer-events:none;font-family:var(--theme-font,system-ui,sans-serif)}.nav-tour .nav-btn,.nav-tour .nav-bubble{pointer-events:auto}.nav-dim{position:fixed;inset:0;width:100%;height:100%}.nav-ring{position:fixed;border:2px solid var(--theme-gold,#efcc4a);border-radius:12px;box-shadow:0 0 0 4px rgba(239,204,74,.16);transition:top .32s cubic-bezier(.2,.8,.2,1),left .32s cubic-bezier(.2,.8,.2,1),width .32s cubic-bezier(.2,.8,.2,1),height .32s cubic-bezier(.2,.8,.2,1)}.nav-bubble{position:fixed;display:flex;align-items:flex-end;gap:4px;transition:top .32s cubic-bezier(.2,.8,.2,1),left .32s cubic-bezier(.2,.8,.2,1)}.nav-figure{flex:none;margin-bottom:-6px;filter:drop-shadow(0 8px 18px rgba(0,0,0,.35))}.nav-copy{flex:1 1 auto;min-width:0;background:var(--theme-card,#0d1525);color:var(--theme-text,#e2e8f0);border:1px solid var(--theme-border,#1e3a5f);border-radius:16px;padding:16px 18px 14px;box-shadow:0 18px 40px rgba(0,0,0,.45)}.nav-chapter{font-size:11px;text-transform:uppercase;letter-spacing:.07em;font-weight:700;color:var(--theme-gold,#c9a84c)}.nav-title{margin:6px 0;font-size:17px;font-weight:650;letter-spacing:-.01em;line-height:1.25}.nav-say{margin:0;font-size:14.5px;line-height:1.55;color:var(--theme-text,#e2e8f0)}.nav-controls{display:flex;align-items:center;gap:8px;margin-top:14px}.nav-spacer{flex:1 1 auto}.nav-btn{border:1px solid transparent;background:var(--theme-accent,#6366f1);color:#fff;border-radius:10px;padding:8px 16px;font:inherit;font-size:13.5px;font-weight:600;cursor:pointer}.nav-btn:hover{filter:brightness(1.08)}.nav-btn[disabled]{opacity:.45;cursor:default}.nav-btn.ghost{background:none;color:var(--theme-text-secondary,#94a3b8);border-color:var(--theme-border-strong,#4a6fa5)}.nav-progress{margin-top:12px;height:3px;border-radius:999px;background:var(--theme-border,#1e3a5f);overflow:hidden}.nav-progress-fill{height:100%;background:linear-gradient(90deg,#6e3a3f,#c62828);transition:width .32s ease}.nav-count{margin-top:6px;font-size:11px;color:var(--theme-text-secondary,#94a3b8)}@media (max-width:720px){.nav-bubble{left:12px!important;right:12px;top:auto!important;bottom:12px;width:auto!important;align-items:flex-start}.nav-figure{transform:scale(.62);transform-origin:bottom left;margin:0 -18px -14px -8px}.nav-title{font-size:16px}.nav-say{font-size:14px}}@media (prefers-reduced-motion:reduce){.nav-bubble,.nav-progress-fill,.nav-ring{transition:none}}