:root{color-scheme:light dark;--bg: #f6f7f4;--surface: #ffffff;--text: #1c2620;--muted: #6b7a72;--primary: #2f9e6f;--primary-ink: #ffffff;--border: #e3e8e3;--shadow: 0 6px 24px rgba(0, 0, 0, .08)}@media(prefers-color-scheme:dark){:root{--bg: #11150f;--surface: #1a211a;--text: #e8efe7;--muted: #93a39a;--primary: #4cc88c;--primary-ink: #08120c;--border: #2a352a;--shadow: 0 6px 24px rgba(0, 0, 0, .4)}}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,PingFang TC,Noto Sans TC,system-ui,sans-serif;background:var(--bg);color:var(--text)}.app{max-width:480px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column}.app__header{padding:16px 20px}.app__logo{font-weight:700;font-size:18px}.app__main{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px;gap:24px}.muted{color:var(--muted)}.error{color:#c0392b;background:#fdecea;padding:12px 16px;border-radius:10px}.home{text-align:center;display:flex;flex-direction:column;align-items:center;gap:24px}.plant{font-size:72px;line-height:1}.home__title{font-size:22px;margin:0}.stats{display:flex;gap:28px}.stat{display:flex;flex-direction:column;gap:4px}.stat__num{font-size:24px;font-weight:700}.stat__label{font-size:12px;color:var(--muted)}.card-wrap{width:100%;display:flex;flex-direction:column;align-items:center;gap:20px}.card{position:relative;width:100%;background:var(--surface);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);padding:40px 28px;text-align:center;min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px}.tag{position:absolute;top:14px;right:14px;font-size:12px;padding:3px 10px;border-radius:999px;background:var(--border);color:var(--muted)}.tag--new{background:var(--primary);color:var(--primary-ink)}.card__english{font-size:32px;font-weight:600}.card__phonetic{font-size:15px;color:var(--muted)}.card__back{margin-top:12px;display:flex;flex-direction:column;gap:8px;width:100%}.card__pos{font-size:13px;color:var(--muted)}.card__chinese{font-size:22px;font-weight:700}.card hr{width:60%;border:none;border-top:1px solid var(--border);margin:6px auto}.card__example{font-size:15px}.card__example-zh{font-size:14px;color:var(--muted)}.btn{font:inherit;cursor:pointer;border:1px solid var(--border);background:var(--surface);color:var(--text);padding:12px 22px;border-radius:12px;transition:transform .05s ease}.btn:active{transform:translateY(1px)}.btn--primary{background:var(--primary);color:var(--primary-ink);border-color:transparent;font-weight:600}.hint{font-size:13px;color:var(--muted)}kbd{font-family:inherit;background:var(--border);border-radius:6px;padding:1px 7px;font-size:12px}.rating{display:flex;gap:12px}.rate kbd{margin-right:6px}.rate--3{border-color:var(--primary)}