:root{--bg:#fbf7f2;--card:#fff;--ink:#22201d;--sub:#7a736a;--line:#ece5db;--red:#d9413b;--red2:#fdecea;--blue:#2f6fd6;--blue2:#e9f0fc;--green:#2e9b6a;--green2:#e5f5ed;--amber:#c98a12;--amber2:#fbf1dc;--violet:#7b55c9;--violet2:#f0eafb}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
body{background:var(--bg);color:var(--ink);font-family:-apple-system,"PingFang SC","Hiragino Sans","Noto Sans JP",sans-serif;font-size:15px;line-height:1.6}
#app{max-width:760px;margin:0 auto;padding-bottom:80px}
button{font:inherit;border:0;background:none;color:inherit;cursor:pointer}
.ic{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;vertical-align:-3px}
/* 顶栏 */
.top{position:sticky;top:0;z-index:20;background:rgba(251,247,242,.94);backdrop-filter:blur(8px);display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--line)}
.logo{font-weight:800;font-size:18px;letter-spacing:.5px}.logo b{color:var(--red)}
.top .sp{flex:1}.top .tb{padding:6px;border-radius:10px}.top .tb:hover{background:var(--line)}
/* 首页 */
.hero{margin:16px;border-radius:20px;padding:24px 22px;background:linear-gradient(135deg,#2b2622,#4a3b33);color:#fff;position:relative;overflow:hidden}
.hero h1{font-size:24px;line-height:1.35}.hero h1 b{color:#ffb4a8}
.hero p{opacity:.82;margin-top:8px;font-size:14px}
.stats{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.stat{background:rgba(255,255,255,.1);border-radius:12px;padding:8px 12px;font-size:13px}.stat b{font-size:18px;margin-right:3px}
.me{margin:0 16px;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.me div{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px;text-align:center}
.me b{display:block;font-size:20px}.me span{font-size:12px;color:var(--sub)}
.sec{margin:26px 16px 10px;display:flex;align-items:baseline;gap:10px}.sec h2{font-size:19px}.sec span{color:var(--sub);font-size:13px}
.eps{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;margin:0 16px}
.ep{background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;cursor:pointer;transition:transform .15s}
.ep:hover{transform:translateY(-2px)}
.ep .th{position:relative;aspect-ratio:16/9;background:#ddd center/cover}
.ep .th i{position:absolute;right:8px;bottom:8px;background:rgba(0,0,0,.72);color:#fff;font-style:normal;font-size:12px;padding:1px 7px;border-radius:6px}
.ep .th em{position:absolute;left:8px;top:8px;background:var(--red);color:#fff;font-style:normal;font-size:12px;padding:1px 8px;border-radius:6px}
.ep .bd{padding:10px 12px 12px}.ep .jt{font-weight:700;font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-family:"Hiragino Sans","Noto Sans JP",sans-serif}
.ep .zt{color:var(--sub);font-size:13px;margin-top:2px}.ep .meta{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.tag{font-size:12px;padding:1px 8px;border-radius:6px;background:var(--line);color:var(--sub)}
.tag.lv{background:var(--red2);color:var(--red)}.tag.done{background:var(--green2);color:var(--green)}
/* 播放页 */
.player{position:sticky;top:0;z-index:15;background:#000}
.player video{width:100%;display:block;max-height:42vh;background:#000}
.ctrl{background:var(--card);border-bottom:1px solid var(--line);padding:8px 12px;display:flex;align-items:center;gap:6px;flex-wrap:wrap;position:sticky;z-index:14}
.chip{border:1px solid var(--line);border-radius:999px;padding:4px 11px;font-size:13px;background:var(--card);display:inline-flex;align-items:center;gap:4px}
.chip.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.chip.red.on{background:var(--red);border-color:var(--red)}
.ctrl .sp{flex:1}
.modes{display:flex;gap:6px;padding:12px 16px 4px;overflow-x:auto}
.ehead{padding:14px 16px 4px}.ehead h1{font-size:18px;line-height:1.4;font-family:"Hiragino Sans","Noto Sans JP",sans-serif}
.ehead .zt{color:var(--sub);font-size:14px}
.box{margin:12px 16px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px 16px}
.box h3{font-size:15px;margin-bottom:6px;display:flex;align-items:center;gap:6px}.box h3:before{content:"";width:4px;height:15px;background:var(--red);border-radius:2px}
.box p{font-size:14px;color:#4b463f}
.credit{font-size:12px;color:var(--sub)}.credit a{color:var(--blue)}
/* 句子 */
.sent{margin:10px 16px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:12px 14px;transition:border-color .2s,box-shadow .2s}
.sent.now{border-color:var(--red);box-shadow:0 0 0 3px var(--red2)}
.sh{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--sub)}
.sh .t{font-variant-numeric:tabular-nums;cursor:pointer}.sh .sp{flex:1}
.b{font-size:11px;padding:0 6px;border-radius:5px;line-height:18px}
.b.lv{background:var(--red2);color:var(--red)}.b.g{background:var(--amber2);color:var(--amber)}.b.w{background:var(--blue2);color:var(--blue)}
.sh button{padding:4px;border-radius:8px;color:var(--sub)}.sh button:hover{background:var(--line)}.sh button.on{color:var(--red)}
.ja{font-family:"Hiragino Sans","Noto Sans JP",sans-serif;font-size:19px;line-height:2.1;margin-top:4px;word-break:break-all}
.ja .k{cursor:pointer;border-radius:4px;padding:0 1px;border-bottom:2px solid transparent}
.ja .k:hover{background:var(--line)}
.ja .p-名词{border-color:#9cc0f2}.ja .p-动词{border-color:#f0a39e}.ja .p-形容词,.ja .p-形容动词{border-color:#f3cd78}.ja .p-副词{border-color:#b9a2e8}
.ja .k.fav{background:#fff3c4}
.ja rt{font-size:10px;color:var(--sub)}
.ja.off rt{visibility:hidden}
.zh{color:#5a544c;font-size:14px;margin-top:2px}
.mask{filter:blur(6px);cursor:pointer;user-select:none;transition:filter .2s}.mask.open{filter:none}
.gram{margin-top:8px;border-top:1px dashed var(--line);padding-top:8px;display:none}
.gram.open{display:block}.gram div{font-size:13px;margin:3px 0}.gram b{color:var(--amber);font-family:"Hiragino Sans",sans-serif;margin-right:6px}
.dict{margin-top:8px;display:flex;gap:6px}.dict input{flex:1;border:1px solid var(--line);border-radius:10px;padding:8px 10px;font-size:16px;font-family:"Hiragino Sans",sans-serif;background:var(--bg)}
.dict button{background:var(--ink);color:#fff;border-radius:10px;padding:0 14px;font-size:14px}
.diff{margin-top:6px;font-family:"Hiragino Sans",sans-serif;font-size:16px}.diff .ok{color:var(--green)}.diff .ng{color:var(--red);text-decoration:underline}
.shadow{margin-top:8px;font-size:13px;display:none;align-items:center;gap:10px;background:var(--bg);border-radius:12px;padding:8px 12px}
.shadow.open{display:flex}.score{font-size:24px;font-weight:800;color:var(--red)}
/* 弹窗 */
.sheet{position:fixed;inset:0;z-index:50;display:none}.sheet.open{display:block}
.sheet-bg{position:absolute;inset:0;background:rgba(0,0,0,.35)}
.sheet-box{position:absolute;left:0;right:0;bottom:0;max-width:760px;margin:0 auto;background:var(--card);border-radius:20px 20px 0 0;padding:20px 20px 28px;animation:up .2s}
@keyframes up{from{transform:translateY(40px);opacity:.4}}
.wd{font-family:"Hiragino Sans","Noto Sans JP",sans-serif;font-size:28px;font-weight:700}.wr{color:var(--sub);font-size:15px}
.wm{font-size:18px;margin:10px 0}.wx{background:var(--bg);border-radius:12px;padding:10px 12px;font-size:14px;margin-top:10px;font-family:"Hiragino Sans",sans-serif}
.wb{display:flex;gap:8px;margin-top:14px}.wb button{flex:1;border-radius:12px;padding:10px;background:var(--line);font-size:14px}.wb button.pri{background:var(--red);color:#fff}
.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%);background:rgba(34,32,29,.92);color:#fff;padding:8px 16px;border-radius:999px;font-size:14px;opacity:0;transition:opacity .2s;pointer-events:none;z-index:60}
.toast.on{opacity:1}
/* 底部导航 */
.nav{position:fixed;left:0;right:0;bottom:0;z-index:30;background:rgba(255,255,255,.96);border-top:1px solid var(--line);display:flex;justify-content:center;padding-bottom:env(safe-area-inset-bottom)}
.nav button{flex:1;max-width:190px;padding:8px 0 6px;font-size:11px;color:var(--sub);display:flex;flex-direction:column;align-items:center;gap:2px}
.nav button.on{color:var(--red)}.nav .ic{width:22px;height:22px}
/* 闯关 */
.quiz{margin:16px;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:20px}
.hearts{display:flex;gap:4px;color:var(--red)}.hearts .ic{fill:var(--red)}.hearts .ic.lost{fill:none;opacity:.35}
.qbar{height:8px;background:var(--line);border-radius:4px;margin:12px 0 18px;overflow:hidden}.qbar i{display:block;height:100%;background:var(--green);transition:width .3s}
.qw{font-family:"Hiragino Sans","Noto Sans JP",sans-serif;font-size:30px;font-weight:700;text-align:center}
.qs{text-align:center;color:var(--sub);font-size:14px;margin:6px 0 16px;font-family:"Hiragino Sans",sans-serif}
.qo{display:grid;grid-template-columns:1fr 1fr;gap:10px}.qo button{border:1.5px solid var(--line);border-radius:14px;padding:14px 10px;font-size:15px;background:var(--card)}
.qo button.ok{border-color:var(--green);background:var(--green2)}.qo button.ng{border-color:var(--red);background:var(--red2)}
.big{display:block;width:100%;background:var(--red);color:#fff;border-radius:14px;padding:13px;font-size:16px;font-weight:700;margin-top:14px}
.list{margin:0 16px}.li{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:10px 14px;margin-bottom:8px;display:flex;gap:10px;align-items:center}
.li .wd{font-size:18px}.li .sp{flex:1}.empty{color:var(--sub);text-align:center;padding:40px 0}
@media(min-width:900px){.player video{max-height:52vh}}
.ctrl{gap:4px;flex-wrap:nowrap;overflow-x:auto}.ctrl .chip{padding:4px 9px;font-size:12px;flex:none}
.goal{margin:12px 16px 0;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--sub)}.gbar{flex:1;height:8px;background:var(--line);border-radius:4px;overflow:hidden}.gbar i{display:block;height:100%;background:var(--red)}
.tabs{display:flex;gap:6px;padding:16px 16px 0;overflow-x:auto;align-items:center}.tabs .chip{flex:none}.chip.sm{font-size:12px;padding:3px 9px}.vline{width:1px;height:18px;background:var(--line);flex:none;margin:0 4px}
.player{position:sticky}.cover{position:absolute;left:0;right:0;bottom:0;height:24%;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);background:rgba(0,0,0,.35);display:none;pointer-events:none}.cover.on{display:block}
video::cue{font-size:16px;background:rgba(0,0,0,.6);font-family:"Hiragino Sans","PingFang SC",sans-serif}
.mynote{margin-top:6px;font-size:13px;color:var(--violet);background:var(--violet2);border-radius:10px;padding:6px 10px}
.nt{width:100%;min-height:110px;margin-top:10px;border:1px solid var(--line);border-radius:12px;padding:10px;font:inherit;font-size:15px;background:var(--bg)}
.oth{margin-top:12px}.oh{font-size:13px;color:var(--sub);margin-bottom:6px}.oi{background:var(--bg);border-radius:10px;padding:8px 10px;margin-bottom:6px;cursor:pointer;font-family:"Hiragino Sans",sans-serif;font-size:14px}.oi b{color:var(--red)}.oi span{display:block;font-size:12px;color:var(--sub);font-family:inherit}
.sheet-box{max-height:85vh;overflow-y:auto}
.stg{display:grid;grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:10px;margin:0 16px}.sn{background:var(--card);border:1.5px solid var(--line);border-radius:14px;padding:10px 0;display:flex;flex-direction:column;align-items:center}.sn b{font-size:18px}.sn i{font-style:normal;font-size:11px;color:var(--amber)}.sn.done{border-color:var(--amber);background:var(--amber2)}
.wrongbox{cursor:pointer;background:var(--red2);border-color:#f5c6c2}.wrongbox b{color:var(--red)}
.sq{flex:1;border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:16px;background:var(--card);font-family:inherit}
.week{display:flex;justify-content:space-between;align-items:flex-end;height:90px;margin:8px 0}.week div{display:flex;flex-direction:column;align-items:center;gap:4px;font-size:12px;color:var(--sub)}.week i{width:22px;background:var(--line);border-radius:6px}.week i.ok{background:var(--red)}
.qr{text-align:center;color:var(--sub);font-size:15px}.qfrom{font-size:12px;color:var(--sub);margin-top:4px}.jx{font-family:"Hiragino Sans",sans-serif}.jx b{color:var(--red)}
.nav button{max-width:150px}
.sh{flex-wrap:nowrap}.sh .t,.b{white-space:nowrap}.sh button{flex:none}
.sec{flex-wrap:wrap;row-gap:2px}.sec h2{white-space:nowrap}