:root{--vt-c-white: #ffffff;--vt-c-white-soft: #f8f8f8;--vt-c-white-mute: #f2f2f2;--vt-c-black: #181818;--vt-c-black-soft: #222222;--vt-c-black-mute: #282828;--vt-c-indigo: #2c3e50;--vt-c-divider-light-1: rgba(60, 60, 60, .29);--vt-c-divider-light-2: rgba(60, 60, 60, .12);--vt-c-divider-dark-1: rgba(84, 84, 84, .65);--vt-c-divider-dark-2: rgba(84, 84, 84, .48);--vt-c-text-light-1: var(--vt-c-indigo);--vt-c-text-light-2: rgba(60, 60, 60, .66);--vt-c-text-dark-1: var(--vt-c-white);--vt-c-text-dark-2: rgba(235, 235, 235, .64)}:root{--color-background: var(--vt-c-white);--color-background-soft: var(--vt-c-white-soft);--color-background-mute: var(--vt-c-white-mute);--color-border: var(--vt-c-divider-light-2);--color-border-hover: var(--vt-c-divider-light-1);--color-heading: var(--vt-c-text-light-1);--color-text: var(--vt-c-text-light-1);--section-gap: 160px}@media(prefers-color-scheme:dark){:root{--color-background: var(--vt-c-black);--color-background-soft: var(--vt-c-black-soft);--color-background-mute: var(--vt-c-black-mute);--color-border: var(--vt-c-divider-dark-2);--color-border-hover: var(--vt-c-divider-dark-1);--color-heading: var(--vt-c-text-dark-1);--color-text: var(--vt-c-text-dark-2)}}*,*:before,*:after{box-sizing:border-box;margin:0}body{min-height:100vh;color:var(--color-text);background:var(--color-background);transition:color .5s,background-color .5s;line-height:1.6;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;font-size:20px;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app{min-height:100vh;margin:0 auto;font-weight:400;background:linear-gradient(135deg,#f5f7fa,#c3cfe2);display:flex;justify-content:center;align-items:center}*{margin:0;padding:0;box-sizing:border-box}a,.green{text-decoration:none;color:#00bd7e;transition:.4s;padding:3px}@media(hover:hover){a:hover{background-color:#00bd7e33}}@media(min-width:1024px){body{display:flex;place-items:center}#app{display:grid;grid-template-columns:1fr 1fr}}.flashcard-container[data-v-f6107c0a]{perspective:1000px;width:calc(100vw - 30px);height:85vh}.flashcard[data-v-f6107c0a]{width:100%;height:100%;cursor:pointer;transition:transform .6s;transform-style:preserve-3d;touch-action:pan-y}.flashcard.is-flipped[data-v-f6107c0a]{transform:rotateY(180deg)}.flashcard-inner[data-v-f6107c0a]{position:relative;width:100%;height:100%;transform-style:preserve-3d}.flashcard-front[data-v-f6107c0a],.flashcard-back[data-v-f6107c0a]{position:absolute;width:100%;height:100%;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;flex-direction:column;justify-content:center;align-items:center;border-radius:12px;padding:20px;box-sizing:border-box;box-shadow:0 4px 8px #0003;-webkit-user-select:none;user-select:none}.flashcard-front[data-v-f6107c0a]{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.flashcard-back[data-v-f6107c0a]{background:linear-gradient(135deg,#11998e,#38ef7d);color:#fff;transform:rotateY(180deg)}.hint[data-v-f6107c0a]{font-size:12px;opacity:.7;margin-top:10px}.swipe-hint[data-v-f6107c0a]{font-size:11px;opacity:.6;margin-top:15px;position:absolute;bottom:15px}h3[data-v-f6107c0a]{margin:0;font-size:20px}.flashcard-deck[data-v-be222862]{display:flex;flex-direction:column;align-items:center;padding:0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}h1[data-v-be222862]{color:#333;margin-bottom:10px}.progress[data-v-be222862]{color:#666;font-size:14px}.navigation[data-v-be222862]{display:flex;gap:20px;margin-top:30px}.nav-btn[data-v-be222862]{padding:12px 24px;font-size:16px;border:none;border-radius:8px;background:#667eea;color:#fff;cursor:pointer;transition:all .3s ease}.nav-btn[data-v-be222862]:hover:not(:disabled){background:#5a6fd6;transform:translateY(-2px)}.nav-btn[data-v-be222862]:disabled{background:#ccc;cursor:not-allowed}.touch-instructions[data-v-be222862]{margin-top:25px;padding:12px 20px;background:#667eea1a;border-radius:8px;color:#667eea;font-size:14px}