:root{--bg: #fbf7f2;--card: #ffffff;--ink: #2c2a3a;--muted: #7a7689;--brand: #ff7a59;--brand-strong: #f4633f;--brand2: #3ec6c0;--brand2-strong: #1f8e88;--brand3: #ffb347;--line: #ece6df;--soft: #fff3ee;--soft2: #eafaf8;--soft3: #fff7e6;--shadow: 0 8px 28px rgba(60, 40, 30, .08);--radius: 18px;--nav-h: 64px}*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}html,body,#root{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased;overscroll-behavior-y:none}button{font-family:inherit;cursor:pointer;border:none;background:none}a{color:var(--brand);text-decoration:none}.app-shell{max-width:480px;margin:0 auto;min-height:100%;background:var(--bg);position:relative;padding-bottom:calc(var(--nav-h) + env(safe-area-inset-bottom,0px))}.topbar{position:sticky;top:0;z-index:30;background:#fbf7f2eb;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:14px 18px 10px;border-bottom:1px solid var(--line)}.topbar h1{font-size:19px;font-weight:800;letter-spacing:.5px}.topbar .sub{font-size:12.5px;color:var(--muted);margin-top:2px}.page{padding:16px 16px 8px}.page-title{font-size:22px;font-weight:800;margin:6px 2px 14px}.section-h{font-size:15px;font-weight:700;color:var(--brand2-strong);margin:20px 2px 10px;display:flex;align-items:center;gap:6px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}.grid{display:grid;gap:12px}.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:repeat(3,1fr)}.scene-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 14px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:6px;transition:transform .12s ease}.scene-card:active{transform:scale(.97)}.scene-card .emoji{font-size:34px}.scene-card .name{font-size:15px;font-weight:700}.scene-card .meta{font-size:11.5px;color:var(--muted)}.word-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px 10px;display:flex;flex-direction:column;align-items:center;gap:4px;box-shadow:var(--shadow);position:relative;text-align:center}.word-card .emoji{font-size:30px}.word-card .en{font-size:13.5px;font-weight:700}.word-card .zh{font-size:12px;color:var(--muted)}.speaker{width:36px;height:36px;border-radius:50%;background:var(--soft);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:17px;flex:0 0 auto;transition:transform .12s ease,background .2s ease}.speaker:active{transform:scale(.9)}.speaker.playing{background:var(--brand);color:#fff;animation:pulse 1s infinite}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.12)}}.row{display:flex;align-items:center;gap:10px}.row.between{justify-content:space-between}.row.wrap{flex-wrap:wrap}.sentence{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 14px;box-shadow:var(--shadow);margin-bottom:10px}.sentence .en{font-size:16px;font-weight:600}.sentence .zh{font-size:13px;color:var(--muted)}.dialogue-line{display:flex;gap:10px;margin-bottom:12px;align-items:flex-end}.dialogue-line .avatar{width:38px;height:38px;border-radius:50%;flex:0 0 38px;display:flex;align-items:center;justify-content:center;font-size:18px}.dialogue-line.mom .avatar{background:var(--soft)}.dialogue-line.baby .avatar{background:var(--soft2)}.bubble{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:9px 12px;max-width:75%}.bubble .en{font-size:14.5px;font-weight:600}.bubble .zh{font-size:12px;color:var(--muted)}.dialogue-line .speaker-mini{width:34px;height:34px}.pill{display:inline-block;font-size:11.5px;padding:3px 10px;border-radius:999px;background:var(--soft);color:var(--brand);font-weight:700}.badge-level{font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px}.daily-hero{background:linear-gradient(135deg,#ff8c6b,#ff7a59 60%,#3ec6c0);color:#fff;border-radius:22px;padding:22px 20px;box-shadow:var(--shadow);position:relative;overflow:hidden}.daily-hero .tag{font-size:12px;opacity:.9}.daily-hero .en{font-size:26px;font-weight:800;margin:10px 0 6px;line-height:1.3}.daily-hero .zh{font-size:15px;opacity:.95}.tip{background:var(--soft3);border-left:4px solid var(--brand3);padding:10px 14px;border-radius:0 12px 12px 0;font-size:13px;color:#8a6d3b;margin:10px 0}.lyrics{white-space:pre-wrap;font-size:15px;line-height:1.9}.lyrics .hl{background:var(--soft);padding:0 4px;border-radius:6px;font-weight:700;color:var(--brand-strong)}.rhyme-cover{width:100%;display:block;margin-top:12px;border-radius:14px;border:1px solid var(--line);box-shadow:var(--shadow);background:var(--soft2)}.rhyme-cover.playing{animation:coverGlow 2.4s ease-in-out infinite}@keyframes coverGlow{0%,to{box-shadow:var(--shadow)}50%{box-shadow:0 8px 30px #3ec6c059}}.rhyme-thumb{width:52px;height:52px;border-radius:14px;flex:0 0 52px;object-fit:cover;border:1px solid var(--line);background:var(--soft2)}.player-bar{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:14px 16px;box-shadow:var(--shadow);margin-top:14px;display:flex;align-items:center;gap:14px}.player-bar .title{font-weight:700;font-size:15px}.player-bar .ctrls{display:flex;gap:6px;margin-left:auto}.ctrl-btn{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:17px;background:var(--soft);color:var(--brand2-strong);flex:none}.ctrl-btn.play{background:var(--brand2);color:#fff;width:48px;height:48px;font-size:20px}.ctrl-btn:active{transform:scale(.93)}.ctrl-btn:disabled{opacity:.35;cursor:not-allowed;transform:none}.ctrl-btn.active{background:var(--brand2);color:#fff}.progress{height:6px;background:var(--line);border-radius:999px;margin-top:10px;overflow:hidden}.progress>i{display:block;height:100%;background:var(--brand2);border-radius:999px;transition:width .2s linear}.tabbar{position:fixed;left:50%;transform:translate(-50%);bottom:0;width:100%;max-width:480px;height:calc(var(--nav-h) + env(safe-area-inset-bottom,0px));padding-bottom:env(safe-area-inset-bottom,0px);background:#fffffff5;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-top:1px solid var(--line);display:flex;z-index:40}.tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;color:var(--muted);font-size:11px;font-weight:600}.tabbar a .ic{font-size:21px}.tabbar a.active{color:var(--brand)}.setting-row{display:flex;align-items:center;justify-content:space-between;padding:14px 4px;border-bottom:1px solid var(--line)}.setting-row:last-child{border-bottom:none}.setting-row .label{font-size:15px;font-weight:600}.setting-row .desc{font-size:12px;color:var(--muted)}.seg{display:flex;gap:8px;flex-wrap:wrap}.seg button{padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:13.5px;font-weight:600;color:var(--muted)}.seg button.active{background:var(--brand);color:#fff;border-color:var(--brand)}input[type=range]{width:100%;accent-color:var(--brand)}.empty{text-align:center;color:var(--muted);padding:40px 0;font-size:14px}.loading{text-align:center;padding:60px 0;color:var(--muted)}