:root{color-scheme:light;--button-ink:#f6f8ff}
:root[data-theme=dark]{color-scheme:dark;--blue:#98b7ff;--ink:#edf2fc;--muted:#b3bfd5;--paper:#111827;--pale:#1d2b43;--lavender:#25253d;--peach:#3b3025;--line:#3b4962;--button-ink:#111827}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;flex:none;width:44px;height:44px;border:1px solid var(--line);border-radius:50%;color:var(--blue);background:var(--paper)}
.theme-toggle:hover{background:var(--pale)}.theme-toggle svg{width:22px;height:22px}.theme-sun{display:none}
[data-theme=dark] .theme-moon{display:none}[data-theme=dark] .theme-sun{display:block}
.button,.level-filter[aria-pressed=true]{color:var(--button-ink)}
.language-picker option{background:var(--paper);color:var(--ink)}
.store-badge{border-color:var(--line)}a.store-badge{border-color:var(--blue)}a.store-badge:hover{background:var(--pale)}
.site-footer nav{flex-wrap:wrap}.support-nav{align-items:center}
[data-theme=dark] .button:hover{background:#b7cbff}
[data-theme=dark] ::selection{background:#3f5886;color:#fff}
[data-theme=dark] .hero{background:#15263b}
[data-theme=dark] .hero-tint{background:linear-gradient(90deg,rgba(17,24,39,.22) 10%,rgba(17,24,39,.65) 40%,rgba(17,24,39,.96) 60%,rgba(17,24,39,.93) 100%)}
[data-theme=dark] :is(.number-1,.roadmap-label,.word-trigger,.phone-story mark,.book-meta span:first-child){background:var(--pale)}
[data-theme=dark] .number-2{background:var(--lavender)}
[data-theme=dark] .word-trigger:hover{background:#2c4165}
[data-theme=dark] .phone-home{background:var(--muted)}
[data-theme=dark] .handwritten{color:#b5bce8}
[data-theme=dark] .greetings span:nth-child(3n){background:#352d4e;color:#d9c1fc}
[data-theme=dark] .future-label{background:var(--peach);color:#e6bf89}
[data-theme=dark] .faq-book{color:#829bcd}
[data-theme=dark] :is(.library-cover,.story-header>img){box-shadow:5px 8px 0 #26344d}
[data-theme=dark] .reader-meaning{background:var(--pale);border-color:var(--line);box-shadow:0 12px 40px #0005}
[data-theme=dark] :is(.reader-word:hover,.reader-word[aria-expanded=true]){background:#4a3b27}
[data-theme=dark] :is(.story-contents,.quiz-question label:has(input:checked)){background:var(--pale)}
@media(max-width:760px){
  .nav-actions{gap:8px}.library-page .nav-actions{gap:8px}
  [data-theme=dark] .hero-tint{background:linear-gradient(180deg,rgba(17,24,39,.98) 0%,rgba(17,24,39,.95) 35%,rgba(17,24,39,.82) 49%,rgba(17,24,39,.2) 70%)}
}
@media(max-width:420px){
  .site-header .nav-wrap{flex-wrap:wrap;gap:6px 12px;padding-block:12px}
  .site-header .brand span{font-size:26px}.site-header .brand svg{width:29px;height:32px}
  .site-header .language-picker .icon{display:none}
  .site-header .language-picker select{max-width:88px}
  .library-page .site-header .nav-actions>.text-link{display:none}
  .support-nav{gap:10px;font-size:12px}
}