:root{--sky-top:#0845a7;--sky-middle:#317bc0;--sky-low:#c8dcdf;--sky-paper:#f7f0de;--sky-ink:#153f70;--sky-pill:#f7efd8;--sky-pull:0px}
html{background:var(--sky-top);overscroll-behavior-y:auto}
body{background:var(--sky-top);overscroll-behavior-y:auto}
.hero{background:linear-gradient(180deg,var(--sky-top) 0%,var(--sky-middle) 46%,var(--sky-low) 80%,var(--sky-paper) 100%)}
.study-bar{background:var(--sky-top);color:#fff}
.study-notes{background:var(--sky-paper)}
.study-notes h2,.review-tools label,.review-buttons button,.review-buttons a{color:var(--sky-ink)}
.study-notes p{color:var(--sky-ink)}
.review-buttons [aria-pressed=true]{background:var(--sky-ink);color:#fff}
.native-link{background:var(--sky-pill);color:var(--sky-ink)}
.nav-signup,.primary{background:var(--sky-pill);color:var(--sky-ink)}
#mobile-nav{background:var(--sky-top)}
::selection{background:var(--sky-pill);color:var(--sky-ink)}
.sky-old-background{position:absolute;inset:0;z-index:-2;pointer-events:none}
.cloud img.sky-outgoing{position:absolute;inset:0;pointer-events:none}
.sky-notice{position:fixed;top:52px;left:50%;transform:translate(-50%,-8px);z-index:25;background:var(--sky-top);color:#fff;border-radius:18px;padding:12px 20px;font-size:13px;line-height:20px;max-width:calc(100% - 32px);width:max-content;opacity:0;pointer-events:none;transition:opacity 150ms var(--ease-out),transform 200ms var(--ease-out);box-shadow:0 8px 24px #102c4930}
.sky-notice.visible{opacity:1;transform:translate(-50%,0)}
.sky-tools{display:flex;align-items:center;gap:12px}
.sky-picker-toggle{background:transparent;color:inherit;min-height:36px;padding:6px 8px;border-radius:8px;font-size:12px;text-decoration:underline;text-underline-offset:4px}
.sky-picker{position:fixed;right:20px;top:56px;z-index:28;width:min(310px,calc(100% - 40px));background:var(--sky-paper);color:var(--sky-ink);padding:20px;border-radius:16px;box-shadow:0 12px 38px #0f2e4a3b}
.sky-picker header{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.sky-picker button{background:var(--sky-pill);color:var(--sky-ink);padding:10px 12px;border-radius:8px;font-size:12px}
.sky-picker label{display:block;font-size:13px;margin-bottom:8px}
.sky-picker select{display:block;width:100%;min-height:44px;padding:10px;border:1px solid var(--sky-ink);border-radius:8px;background:var(--sky-paper);color:var(--sky-ink);font:inherit;font-size:14px}
.sky-picker p{font-size:12px;line-height:19px;margin:12px 0 0}
.sky-picker #next-sky{width:100%;margin-top:14px;min-height:44px;background:var(--sky-ink);color:var(--sky-paper)}
@media(hover:hover) and (pointer:fine){.sky-picker-toggle:hover{background:#ffffff12}}
@media(max-width:760px){.sky-tools{gap:4px}.sky-picker-toggle{font-size:10px;padding:4px}.study-bar{gap:4px;padding:0 12px}.sky-notice{font-size:12px;padding:10px 14px}}
@media(prefers-reduced-motion:reduce){.cloud img,.sky-notice{transition:none}.sky-notice{transform:translateX(-50%)}}
.reduced .cloud img,.reduced .sky-notice{transition:none}

.sky-picker select:focus-visible{outline:3px solid var(--sky-ink);outline-offset:4px}

body:has(.explanation){background:var(--sky-paper);color:var(--sky-ink)}
.explanation>a,.explanation .notice{color:var(--sky-ink)}
.explanation .example{background:var(--sky-pill)}

#site-surface{position:relative;background:var(--sky-paper);transform:none}
.sky-dragging{user-select:none;-webkit-user-select:none}
.sky-reveal{position:fixed;z-index:0;top:0;left:0;right:0;height:180px;overflow:hidden;pointer-events:none;transform:translateY(-180px);background:var(--sky-top);color:#fff;contain:layout paint}
#sky-dither{position:absolute;inset:0;width:100%;height:180px;image-rendering:pixelated}
.sky-reveal-copy{position:absolute;left:50%;bottom:18px;transform:translateX(-50%);text-align:center;max-width:calc(100% - 32px);width:420px;pointer-events:none}
.sky-reveal-brand{display:block;font-family:'Inter Tight','Inter Tight Fallback',sans-serif;font-size:16px;letter-spacing:-.025em;margin-bottom:8px;color:#fff}
.sky-reveal-copy strong{display:block;font-family:'Inter Tight','Inter Tight Fallback',sans-serif;font-size:28px;line-height:32px;font-weight:400;letter-spacing:-.02em}
.sky-reveal-copy p{font-size:13px;line-height:20px;margin:8px 0 0;color:#fff}
@media(max-width:760px){.sky-reveal-copy strong{font-size:24px;line-height:28px}.sky-reveal-copy p{font-size:12px}.sky-reveal-brand{font-size:14px}}