:root{
  --pink:#FF6B9D;
  --purple:#B388EB;
  --cream:#FFF5E9;
  --ink:#3D2C3F;
  --muted:#8A7A8C;
  --card:#FFFFFF;
  --hl:#FFF3CD;
  --shadow:0 6px 20px rgba(255,107,157,.15);
  --radius:20px;
  --fs:18px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{margin:0;padding:0;background:var(--cream);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:var(--fs);line-height:1.65;overscroll-behavior-y:contain;}
body{padding-bottom:88px;padding-top:env(safe-area-inset-top);}
.hidden{display:none !important;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit;}
img{max-width:100%;}

/* Onboarding */
.hero{padding:64px 28px 28px;text-align:center;}
.hero .logo{width:110px;height:110px;border-radius:28px;box-shadow:var(--shadow);}
.hero h1{font-size:32px;margin:18px 0 6px;background:linear-gradient(135deg,var(--pink),var(--purple));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero .subtitle{color:var(--muted);margin:0 0 20px;}
.hero .hint{color:var(--muted);font-size:15px;margin-bottom:28px;}

.btn-primary{background:linear-gradient(135deg,var(--pink),var(--purple));color:#fff;padding:14px 24px;border-radius:999px;font-weight:600;font-size:17px;box-shadow:var(--shadow);min-height:48px;min-width:48px;display:inline-block;}
.btn-primary:disabled{opacity:.5;}
.btn-secondary{background:#fff;color:var(--pink);border:2px solid var(--pink);padding:12px 22px;border-radius:999px;font-weight:600;min-height:48px;}
.btn-danger{background:#FFD6DF;color:#C03A66;padding:12px 22px;border-radius:999px;font-weight:600;min-height:48px;}
.btn-text{color:var(--muted);padding:10px 16px;margin-top:10px;min-height:44px;}

/* Test */
.test-header{padding:18px 24px 6px;}
.progress-bar{height:8px;background:#F4E4F5;border-radius:999px;overflow:hidden;}
.progress-bar>div{height:100%;background:linear-gradient(90deg,var(--pink),var(--purple));width:0%;transition:width .3s;}
.test-step{text-align:right;color:var(--muted);font-size:14px;margin-top:6px;}
.test-body{padding:18px 24px;}
.test-q{font-size:19px;font-weight:600;margin-bottom:18px;}
.test-opt{display:block;width:100%;text-align:left;background:#fff;border:2px solid transparent;padding:14px 18px;border-radius:16px;margin-bottom:10px;box-shadow:var(--shadow);min-height:52px;}
.test-opt.sel{border-color:var(--pink);background:#FFF0F4;}
.test-footer{padding:16px 24px 24px;}

/* App header */
.app-header{position:sticky;top:0;z-index:20;background:var(--cream);padding:14px 20px 10px;display:flex;align-items:center;gap:10px;}
#header-title{flex:1;font-weight:700;font-size:20px;background:linear-gradient(135deg,var(--pink),var(--purple));-webkit-background-clip:text;background-clip:text;color:transparent;}
.icon-btn{min-width:44px;min-height:44px;border-radius:50%;background:#fff;box-shadow:var(--shadow);font-size:18px;display:inline-flex;align-items:center;justify-content:center;padding:0 10px;}

.page{padding:6px 18px 20px;}

/* Greeting card */
.greeting-card{background:linear-gradient(135deg,#FFE2EC,#E7DAFA);border-radius:var(--radius);padding:20px;display:flex;align-items:center;justify-content:space-between;box-shadow:var(--shadow);margin-bottom:18px;}
.hello{font-size:22px;font-weight:700;}
.streak-row{margin-top:6px;color:var(--ink);font-size:15px;}
.streak-flame{margin-right:4px;}
.level-badge{background:#fff;color:var(--pink);padding:8px 14px;border-radius:999px;font-weight:700;box-shadow:var(--shadow);}

.section-title{margin:22px 6px 12px;font-size:17px;color:var(--ink);}
.hint{color:var(--muted);font-size:14px;margin:0 6px 12px;}

/* Cards */
.card-list{display:flex;flex-direction:column;gap:14px;}
.article-card{background:var(--card);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);display:flex;gap:14px;align-items:center;min-height:84px;position:relative;}
.article-card:active{transform:scale(.98);}
.card-emoji{font-size:38px;width:58px;height:58px;border-radius:16px;background:linear-gradient(135deg,#FFE2EC,#E7DAFA);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.card-body{flex:1;min-width:0;}
.card-title{font-weight:600;font-size:16px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{margin-top:6px;color:var(--muted);font-size:13px;display:flex;gap:10px;align-items:center;flex-wrap:wrap;}
.badge{display:inline-block;padding:3px 9px;border-radius:999px;font-size:12px;font-weight:600;}
.badge-a2{background:#E8F8EE;color:#2F9E5E;}
.badge-b1{background:#FFF1DA;color:#D08A1F;}
.badge-b2{background:#F0E5FB;color:#7B4FCB;}
.new-badge{background:var(--pink);color:#fff;margin-left:6px;font-size:11px;padding:2px 7px;}

/* Filter */
.filter-row{display:flex;gap:8px;margin:8px 0 16px;overflow-x:auto;}
.chip{padding:8px 14px;border-radius:999px;background:#fff;color:var(--muted);font-size:14px;box-shadow:var(--shadow);min-height:38px;white-space:nowrap;}
.chip.chip-on{background:linear-gradient(135deg,var(--pink),var(--purple));color:#fff;}

/* Stat */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;}
.stat-card{background:#fff;border-radius:16px;padding:16px 10px;text-align:center;box-shadow:var(--shadow);}
.stat-num{font-size:24px;font-weight:700;background:linear-gradient(135deg,var(--pink),var(--purple));-webkit-background-clip:text;background-clip:text;color:transparent;}
.stat-lbl{color:var(--muted);font-size:13px;margin-top:2px;}

.footer-tip{text-align:center;color:var(--muted);font-size:13px;margin:30px 0 10px;}

/* Tabbar */
.tabbar{position:fixed;left:0;right:0;bottom:0;background:#fff;display:flex;justify-content:space-around;padding:6px 0 calc(6px + env(safe-area-inset-bottom));box-shadow:0 -4px 20px rgba(61,44,63,.08);z-index:30;}
.tab{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 0;min-height:56px;color:var(--muted);font-size:11px;}
.tab span{font-size:22px;line-height:1;}
.tab.on{color:var(--pink);}

/* Reader - 使用 block 布局避免老 WebView flex bug */
.reader{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--cream);z-index:40;overflow-y:auto;padding-bottom:100px;display:block;}
.reader-toolbar{position:-webkit-sticky;position:sticky;top:0;z-index:5;background:var(--cream);padding:12px 14px;display:-webkit-box;display:-webkit-flex;display:flex;-webkit-box-align:center;-webkit-align-items:center;align-items:center;gap:8px;}
.reader-tools{margin-left:auto;display:flex;gap:8px;}
.reader-meta{padding:6px 20px 14px;display:flex;gap:14px;align-items:center;}
.reader-emoji{font-size:48px;width:72px;height:72px;border-radius:20px;background:linear-gradient(135deg,#FFE2EC,#E7DAFA);display:flex;align-items:center;justify-content:center;}
.reader-title-wrap{flex:1;min-width:0;}
.reader-title{font-weight:700;font-size:19px;line-height:1.35;}
.reader-sub{color:var(--muted);font-size:13px;margin-top:4px;}

.reader-content{padding:8px 18px 16px;min-height:50vh;}
.para{background:#fff;border-radius:18px;padding:18px 20px;margin-bottom:14px;box-shadow:var(--shadow);font-size:var(--fs);line-height:1.8;color:var(--ink);min-height:20px;display:block;}
.para.speaking{box-shadow:0 0 0 3px var(--pink),var(--shadow);}
.para .w{cursor:pointer;display:inline;color:var(--ink);}
.para .w.known{background:var(--hl);border-radius:4px;padding:0 1px;}
.para.translation{background:#FFF9ED;color:var(--muted);font-size:calc(var(--fs) - 1px);}

.reader-footer{position:fixed;left:0;right:0;bottom:0;padding:12px 18px calc(12px + env(safe-area-inset-bottom));background:var(--cream);z-index:6;}
.reader-footer .btn-primary{width:100%;}

/* Bubble */
.bubble{position:fixed;z-index:60;background:#3D2C3F;color:#fff;padding:10px 14px;border-radius:14px;font-size:15px;max-width:260px;box-shadow:0 8px 24px rgba(0,0,0,.2);line-height:1.5;}
.bubble .b-ph{opacity:.8;font-size:13px;margin-right:8px;}
.bubble .b-pos{display:inline-block;background:var(--pink);color:#fff;font-size:11px;padding:1px 6px;border-radius:6px;margin-right:6px;}
.bubble .b-cn{display:block;margin-top:4px;}
.bubble::after{content:"";position:absolute;top:-6px;left:20px;border:6px solid transparent;border-bottom-color:#3D2C3F;}

/* Overlay */
.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(61,44,63,.45);z-index:80;display:flex;align-items:flex-end;justify-content:center;}
.overlay-card{background:#fff;width:100%;max-width:520px;border-radius:24px 24px 0 0;padding:24px 22px calc(24px + env(safe-area-inset-bottom));max-height:90vh;overflow-y:auto;}
.overlay-card h2{margin:0 0 10px;font-size:20px;}
.listen-controls{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0;}
.listen-questions{margin-top:16px;}
.listen-questions .lq{margin-bottom:16px;}
.listen-questions .lq-q{font-weight:600;margin-bottom:10px;}
.listen-questions .lq-opt{display:block;width:100%;text-align:left;background:#F7F0FB;padding:12px 14px;border-radius:12px;margin-bottom:8px;min-height:44px;border:2px solid transparent;}
.listen-questions .lq-opt.correct{background:#E8F8EE;border-color:#2F9E5E;}
.listen-questions .lq-opt.wrong{background:#FFE2EC;border-color:#C03A66;}

/* Flashcard */
.flashcard{background:linear-gradient(135deg,#FFE2EC,#E7DAFA);border-radius:22px;padding:40px 24px;min-height:220px;display:flex;align-items:center;justify-content:center;text-align:center;margin:16px 0;font-size:28px;font-weight:700;box-shadow:var(--shadow);}
.fc-back{font-size:20px;font-weight:500;color:var(--ink);}
.review-progress{color:var(--muted);font-size:13px;text-align:center;}
.review-actions{display:flex;gap:10px;justify-content:center;margin:12px 0;}
.review-actions button{flex:1;}

/* Vocab */
.vocab-tabs{display:flex;gap:8px;margin:8px 0 14px;}
.vtab{flex:1;padding:10px;border-radius:14px;background:#fff;color:var(--muted);font-weight:600;box-shadow:var(--shadow);min-height:44px;}
.vtab.on{background:linear-gradient(135deg,var(--pink),var(--purple));color:#fff;}
.vocab-word{background:#fff;border-radius:14px;padding:12px 16px;box-shadow:var(--shadow);margin-bottom:10px;display:flex;align-items:center;justify-content:space-between;gap:10px;}
.vocab-word .vw-en{font-weight:700;font-size:17px;}
.vocab-word .vw-cn{color:var(--muted);font-size:13px;margin-top:2px;}
.vocab-word .vw-meta{font-size:12px;color:var(--purple);}
.vocab-empty{text-align:center;color:var(--muted);padding:40px 20px;}

/* Me */
.me-card{background:linear-gradient(135deg,#FFE2EC,#E7DAFA);border-radius:22px;padding:24px;text-align:center;box-shadow:var(--shadow);}
.me-avatar{font-size:56px;}
.me-name{font-size:22px;font-weight:700;margin-top:6px;}
.me-lvl{color:var(--muted);margin-top:2px;}
.me-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:18px 0;}
.me-stats>div{background:#fff;border-radius:16px;padding:14px 6px;text-align:center;box-shadow:var(--shadow);}
.me-num{font-size:22px;font-weight:700;color:var(--pink);}
.me-list{background:#fff;border-radius:18px;overflow:hidden;box-shadow:var(--shadow);}
.me-item{padding:16px 18px;border-bottom:1px solid #F7EDF8;min-height:52px;display:flex;align-items:center;}
.me-item:last-child{border-bottom:0;}

/* Toast */
.toast{position:fixed;left:50%;top:80px;transform:translateX(-50%);background:#3D2C3F;color:#fff;padding:10px 18px;border-radius:999px;z-index:200;font-size:14px;box-shadow:0 6px 20px rgba(0,0,0,.2);}

/* Egg modal */
.egg-letter{font-size:16px;line-height:1.8;white-space:pre-wrap;padding:10px 2px 18px;}

@media (min-width:720px){
  body{max-width:560px;margin:0 auto;}
  .tabbar{max-width:560px;left:50%;transform:translateX(-50%);border-radius:18px 18px 0 0;}
  .reader{max-width:560px;left:50%;right:auto;transform:translateX(-50%);width:100%;}
}

/* ====== v2 新增样式（TTS/云同步/提醒/成就） ====== */

/* 成就面板（首页顶部） */
.achievement-panel{background:#fff;border-radius:var(--radius);padding:14px;box-shadow:var(--shadow);display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-bottom:10px;}
.ach-cell{text-align:center;padding:8px 4px;}
.ach-icon{font-size:22px;line-height:1;}
.ach-num{font-size:17px;font-weight:700;color:var(--pink);margin-top:4px;line-height:1.1;}
.ach-lbl{font-size:11px;color:var(--muted);margin-top:2px;line-height:1.2;}
.recent-badges{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:6px;}
.badge-chip{background:linear-gradient(135deg,#FFE2EC,#E7DAFA);color:var(--ink);padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600;}

/* 同步/提醒弹窗面板 */
.panel-card{background:#fff;border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);margin-bottom:14px;}
.panel-title{font-weight:700;font-size:17px;margin-bottom:10px;}
.panel-row{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid #F7EDF8;gap:10px;}
.panel-row:last-child{border-bottom:0;}
.panel-meta{color:var(--muted);font-size:13px;}
.panel-actions{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap;}
.panel-actions button{flex:1;min-width:120px;}

/* 开关 */
.switch{position:relative;width:46px;height:26px;background:#EADCEC;border-radius:999px;transition:background .2s;flex-shrink:0;cursor:pointer;}
.switch.on{background:linear-gradient(135deg,var(--pink),var(--purple));}
.switch::after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;background:#fff;border-radius:50%;transition:left .2s;box-shadow:0 1px 3px rgba(0,0,0,.15);}
.switch.on::after{left:23px;}

/* 时间选择 */
.time-picker{display:flex;gap:8px;align-items:center;}
.time-picker select{padding:8px 12px;border-radius:12px;border:1px solid #F0E2F2;background:#fff;font-size:15px;font-family:inherit;min-height:40px;}

/* 成就殿堂列表 */
.ach-list{display:flex;flex-direction:column;gap:10px;}
.ach-item{display:flex;align-items:center;gap:12px;background:#fff;border-radius:16px;padding:12px 14px;box-shadow:var(--shadow);}
.ach-item.locked{opacity:.45;}
.ach-item .ai-emoji{font-size:30px;width:48px;height:48px;border-radius:14px;background:linear-gradient(135deg,#FFE2EC,#E7DAFA);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.ach-item.locked .ai-emoji{background:#F4EAF5;color:#BBA7C2;filter:grayscale(.6);}
.ach-item .ai-body{flex:1;min-width:0;}
.ach-item .ai-name{font-weight:700;font-size:15px;}
.ach-item .ai-desc{color:var(--muted);font-size:13px;margin-top:2px;}
.ach-item .ai-status{font-size:12px;color:var(--pink);font-weight:600;}
.ach-item.locked .ai-status{color:var(--muted);}

/* 通用列表按钮（可点击的 me-item 视觉反馈） */
.me-item{cursor:pointer;}
.me-item:active{background:#FFF0F4;}