:root{--ink:#20213a;--muted:#61637d;--line:#e6e5f2;--paper:#fff;--bg:#f5f5fb;--primary:#5747d6;--primary2:#7868ef;--primary-deep:#4032b6;--primary-soft:#efedff;--primary-tint:#f7f6ff;--primary-line:#c9c3fb;--good:#1d9b6c;--good-soft:#e8faf1;--good-ink:#11724d;--good-line:#8fd6b6;--bad:#d94b63;--bad-soft:#fff0f3;--bad-ink:#a42d45;--bad-line:#f0a3b2;--warn:#d88a19;--warn-soft:#fff5e3;--warn-ink:#7a5312;--warn-line:#ecc478;--r-sm:10px;--r-md:14px;--r-lg:20px;--r-xl:26px;--shadow-sm:0 2px 8px #2622580f;--shadow-md:0 10px 30px #312b6317;--shadow-lg:0 18px 48px #312b6329;--shadow:var(--shadow-md);--tap:44px;--gutter:18px;--rail:100px}*{box-sizing:border-box}html{color:var(--ink);background:var(--bg);-webkit-text-size-adjust:100%;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif;overflow-x:clip}body{background:radial-gradient(circle at 90% -10%,#e5ddff 0,transparent 35%),radial-gradient(circle at -10% 30%,#dff4ff 0,transparent 28%),var(--bg);min-height:100vh;margin:0}button,input,select{font:inherit}button{cursor:pointer;color:inherit;-webkit-tap-highlight-color:transparent;touch-action:manipulation}[hidden]{display:none!important}:focus-visible{outline-offset:2px;outline:3px solid #5747d680}.muted{color:var(--muted)}.icon{fill:none;stroke:currentColor;stroke-width:2px;stroke-linecap:round;stroke-linejoin:round;flex:none;width:22px;height:22px}.icon-fill{fill:currentColor;stroke:none}.wide-only{display:none}.btn{min-height:var(--tap);border-radius:var(--r-md);white-space:nowrap;border:0;justify-content:center;align-items:center;gap:8px;padding:0 18px;font-size:15px;font-weight:750;transition:transform .15s,background-color .15s,box-shadow .15s,color .15s;display:inline-flex}.btn .icon{width:20px;height:20px}.btn:active:not(:disabled){transform:scale(.97)}.btn:disabled{cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px #5747d63d}.btn-primary:disabled{color:#56527a;box-shadow:none;background:#dedbf1}.btn-soft{background:var(--primary-soft);color:var(--primary-deep)}.btn-ghost{border:1px solid var(--line);color:var(--ink);background:#fff}.btn-danger{background:var(--bad-soft);color:var(--bad-ink)}.btn-danger-solid{background:var(--bad);color:#fff}.btn-danger-solid:disabled{color:#8a4a57;background:#f3d9df}.btn-soft:disabled,.btn-ghost:disabled,.btn-danger:disabled{opacity:.55}.btn-toggle{border:1px solid var(--line);min-height:40px;color:var(--muted);background:#fff;padding:0 12px;font-size:13.5px}.btn-toggle[aria-pressed=true]{background:var(--good-soft);border-color:var(--good-line);color:var(--good-ink)}.actions{flex-wrap:wrap;gap:10px;margin-top:18px;display:flex}.tools{flex-wrap:wrap;gap:9px;display:flex}.tool{padding:0 14px;font-size:14px}.tool[aria-pressed=false]{color:var(--muted)}.play-ic{display:inline-flex}.eq{align-items:flex-end;gap:2px;width:20px;height:17px;display:none}.eq i{background:currentColor;border-radius:2px;width:4px;animation:.8s ease-in-out infinite eq;display:block}.eq i:first-child{height:40%}.eq i:nth-child(2){height:100%;animation-delay:-.3s}.eq i:nth-child(3){height:65%;animation-delay:-.55s}.playing .eq{display:inline-flex}.playing .play-ic{display:none}.play-btn.playing{box-shadow:0 0 0 3px var(--primary-line)}.shell{max-width:880px;padding:20px var(--gutter) 110px;margin:auto}.topbar{justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.brand{align-items:center;gap:11px;min-width:0;display:flex}.logo{border-radius:var(--r-md);color:#fff;background:linear-gradient(145deg,var(--primary),#8979ff);flex:none;place-items:center;width:44px;height:44px;font-size:18px;font-weight:900;display:grid;box-shadow:0 8px 20px #5747d640}h1{white-space:nowrap;margin:0;font-size:18px}.sub{color:var(--muted);margin-top:2px;font-size:12.5px}.bottom{z-index:5;-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);border-top:1px solid var(--line);padding:6px 8px max(6px,env(safe-area-inset-bottom));background:#fffffff2;position:fixed;bottom:0;left:0;right:0}.bottom-inner{justify-content:space-around;gap:4px;max-width:650px;margin:auto;display:flex}.nav{border-radius:var(--r-md);min-width:58px;min-height:54px;color:var(--muted);text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:3px;font-size:11.5px;font-weight:700;text-decoration:none;display:flex}.nav-ic{border-radius:999px;place-items:center;width:50px;height:30px;transition:background-color .2s;display:grid}.nav.active{color:var(--primary-deep)}.nav.active .nav-ic{background:var(--primary-soft)}.audio-chip{min-height:var(--tap);border:1px solid var(--line);color:var(--ink);background:#ffffffe6;border-radius:999px;flex:none;align-items:center;gap:8px;padding:0 14px;font-size:13px;font-weight:700;display:inline-flex}.audio-dot{background:var(--primary-line);width:9px;height:9px;box-shadow:0 0 0 4px var(--primary-soft);border-radius:50%}.audio-chip[data-tone=good] .audio-dot{background:var(--good);box-shadow:0 0 0 4px var(--good-soft)}.audio-chip[data-tone=warn] .audio-dot{background:var(--warn);box-shadow:0 0 0 4px var(--warn-soft)}.audio-chip[data-tone=bad] .audio-dot{background:var(--bad);box-shadow:0 0 0 4px var(--bad-soft)}.audio-ring{background:conic-gradient(var(--primary) calc(var(--p,0)*1%),#e3e0f7 0);border-radius:50%;width:18px;height:18px;-webkit-mask:radial-gradient(circle,#0000 5px,#000 5.5px);mask:radial-gradient(circle,#0000 5px,#000 5.5px)}.audio-panel{border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-md);background:#fff;margin:-4px 0 14px;padding:14px 16px;font-size:14px;line-height:1.6;animation:.2s fade-down}.audio-panel.ready{border-color:var(--good-line)}.audio-panel.failed{border-color:var(--bad-line)}.audio-status{margin:0 0 10px}.audio-progress{background:#ececf4;border-radius:99px;height:5px;margin-top:7px;display:block;overflow:hidden}.audio-progress i{background:var(--primary);height:100%;transition:width .2s;display:block}.audio-actions{flex-wrap:wrap;gap:8px;display:flex}.hero{color:#fff;border-radius:var(--r-xl);box-shadow:var(--shadow-lg);background:linear-gradient(135deg,#4032b6,#7868ef);padding:20px;position:relative;overflow:hidden}.hero:after{content:"";pointer-events:none;border:35px solid #ffffff14;border-radius:50%;width:180px;height:180px;position:absolute;top:-95px;right:-70px}.hero-top{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.hero h2{text-wrap:balance;margin:0 0 6px;font-size:21px}.hero p{opacity:.9;margin:0;font-size:14px}.streak{z-index:1;white-space:nowrap;background:#ffffff29;border:1px solid #ffffff38;border-radius:999px;flex:none;align-items:center;gap:5px;padding:6px 11px 6px 8px;font-size:13px;font-weight:800;display:inline-flex;position:relative}.streak .icon{color:#ffc15e;width:18px;height:18px}.progress{background:#ffffff38;border-radius:99px;height:9px;margin:16px 0 8px;overflow:hidden}.progress>i{background:#fff;border-radius:99px;height:100%;transition:width .35s;display:block}.daily-goal{margin-bottom:12px;font-size:13px}.daily-goal b{font-size:15px}.hero-grid{grid-template-columns:repeat(4,1fr);gap:6px;display:grid}.hero-grid div{border-radius:var(--r-sm);text-align:center;background:#ffffff1f;padding:8px 4px}.hero-grid b{font-variant-numeric:tabular-nums;font-size:19px;line-height:1.2;display:block}.hero-grid span{opacity:.92;font-size:11.5px}.hero .actions{margin-top:14px}.hero .btn-primary{color:var(--primary-deep);background:#fff;box-shadow:0 8px 20px #140a502e}.hero .btn-ghost{color:#fff;background:#ffffff24;border-color:#ffffff57}.hero-stats{flex-wrap:wrap;gap:24px;font-size:13px;display:flex}.hero-stats b{font-variant-numeric:tabular-nums;font-size:20px;display:block}.section-title{justify-content:space-between;align-items:baseline;gap:10px;margin:24px 2px 10px;display:flex}.section-title h3{margin:0;font-size:17px}.section-title span{color:var(--muted);white-space:nowrap;font-size:13px}.panel>.section-title:first-child{margin-top:0}.day-strip{scroll-snap-type:x proximity;margin:0 calc(var(--gutter) * -1);padding:2px var(--gutter) 8px;scrollbar-width:none;gap:10px;display:flex;overflow-x:auto}.day-strip::-webkit-scrollbar{display:none}.day-chip{scroll-snap-align:start;border-radius:var(--r-lg);border:1px solid var(--line);text-align:left;min-height:58px;box-shadow:var(--shadow-sm);background:#fff;flex:none;align-items:center;gap:10px;padding:8px 16px 8px 9px;display:flex}.day-chip b{font-size:14.5px;display:block}.day-chip small{color:var(--muted);font-variant-numeric:tabular-nums;font-size:12px}.day-ring{flex:none;width:38px;height:38px}.ring-bg{fill:none;stroke:#ebe9f6;stroke-width:4px}.ring-fg{fill:none;stroke:var(--primary);stroke-width:4px;stroke-linecap:round;transform-origin:50%;transform:rotate(-90deg)}.ring-txt{fill:var(--primary-deep);text-anchor:middle;dominant-baseline:central;font-size:10px;font-weight:800}.day-chip[aria-pressed=true]{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 8px 20px #5747d647}.day-chip[aria-pressed=true] small{color:#ffffffd9}.day-chip[aria-pressed=true] .ring-bg{stroke:#ffffff40}.day-chip[aria-pressed=true] .ring-fg{stroke:#fff}.day-chip[aria-pressed=true] .ring-txt{fill:#fff}.groups{grid-template-columns:1fr 1fr;gap:10px;display:grid}.group{border-radius:var(--r-lg);border:1px solid var(--line);text-align:left;min-height:96px;box-shadow:var(--shadow-sm);background:#fff;flex-direction:column;gap:6px;padding:14px;transition:border-color .15s,transform .15s;display:flex}.group:hover{border-color:var(--primary-line)}.group:active{transform:scale(.98)}.group .n{justify-content:space-between;align-items:center;font-size:15.5px;font-weight:850;display:flex}.group small{color:var(--muted);font-size:12.5px}.group .mini{background:#ececf4;border-radius:8px;height:6px;margin-top:auto;overflow:hidden}.group .mini i{background:var(--primary);border-radius:8px;height:100%;display:block}.group.done .mini i{background:var(--good)}.group.next{border-color:var(--primary-line);box-shadow:0 0 0 3px var(--primary-soft),var(--shadow-sm)}.group-status{color:#a3a1bd;border-radius:50%;justify-content:center;align-items:center;width:26px;height:26px;display:inline-flex}.group-status .icon{width:18px;height:18px}.group-status.check{background:var(--good-soft);color:var(--good-ink)}.group-tag{white-space:nowrap;background:var(--primary);color:#fff;border-radius:999px;align-items:center;min-height:24px;padding:0 9px;font-size:12px;font-weight:800;display:inline-flex}.check{color:var(--good)}.panel{border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--shadow-md);background:#fffffff5;padding:20px}.notice{border-radius:var(--r-md);background:var(--warn-soft);color:var(--warn-ink);flex-wrap:wrap;align-items:flex-start;gap:12px;margin-top:16px;padding:14px 16px;font-size:14px;line-height:1.55;display:flex}.notice b{white-space:nowrap}.notice.ready{background:var(--good-soft);color:var(--good-ink)}.notice.failed{background:var(--bad-soft);color:var(--bad-ink)}.shell.practice-shell{flex-direction:column;min-height:100dvh;padding-bottom:0;display:flex}.practice-screen{flex-direction:column;flex:1;display:flex}.learn-head,.quiz-head{align-items:center;gap:10px;margin-bottom:10px;display:flex}.back{width:var(--tap);height:var(--tap);border:1px solid var(--line);border-radius:var(--r-md);color:var(--ink);box-shadow:var(--shadow-sm);background:#fff;flex:none;place-items:center;display:grid}.head-main{flex:1;min-width:0}.head-main b{white-space:nowrap;text-overflow:ellipsis;font-size:15.5px;display:block;overflow:hidden}.head-main small{color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap;text-overflow:ellipsis;font-size:12.5px;display:block;overflow:hidden}.head-opts{flex:none;align-items:center;gap:6px;display:flex}.opt-chip{border:1px solid var(--line);height:32px;color:var(--muted);box-shadow:var(--shadow-sm);white-space:nowrap;background:#fff;border-radius:999px;align-items:center;gap:3px;padding:0 22px 0 10px;font-size:12px;display:inline-flex;position:relative}.opt-chip b{color:var(--primary-deep);font-weight:800}.opt-chip:after{content:"";border-right:2px solid var(--primary);border-bottom:2px solid var(--primary);opacity:.7;pointer-events:none;width:6px;height:6px;margin-top:-4px;position:absolute;top:50%;right:9px;transform:rotate(45deg)}.opt-chip select{opacity:0;cursor:pointer;border:0;width:100%;font-size:16px;position:absolute;inset:-6px 0}.opt-chip:focus-within{outline-offset:2px;outline:3px solid #5747d680}.seg{height:var(--tap);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-sm);background:#fff;align-items:center;gap:2px;padding:3px;display:none}.seg>span{color:var(--muted);white-space:nowrap;padding:0 8px 0 10px;font-size:13px;font-weight:700}.seg button{border-radius:var(--r-sm);min-width:46px;height:100%;color:var(--muted);background:0 0;border:0;padding:0 10px;font-size:14px;font-weight:750;transition:background-color .15s,color .15s}.seg button[aria-checked=true]{background:var(--primary);color:#fff;box-shadow:0 3px 8px #5747d640}.seg button:not([aria-checked=true]):hover{background:var(--primary-tint);color:var(--primary-deep)}.thin-progress{background:#e8e8f1;border-radius:99px;height:6px;margin-bottom:12px;overflow:hidden}.thin-progress i{background:linear-gradient(90deg,var(--primary),#9b8fff);border-radius:99px;height:100%;transition:width .3s;display:block}.practice-screen>.panel{margin-bottom:14px}.action-bar{z-index:4;margin:auto calc(var(--gutter) * -1) 0;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-top:1px solid var(--line);padding:10px var(--gutter) max(10px,env(safe-area-inset-bottom));background:#fffffff2;transition:background-color .2s,border-color .2s;position:sticky;bottom:0}.action-inner{flex-wrap:wrap;align-items:center;gap:10px;max-width:760px;margin:0 auto;display:flex}.action-inner>.btn,.action-inner>.next-row{flex:1 1 0;min-width:0}.next-row{display:flex}.next-row .btn{flex:1}.action-bar.is-good{border-top-color:var(--good-line);background:#e8faf1f7}.action-bar.is-bad{border-top-color:var(--bad-line);background:#fff0f3f7}.feedback{flex:100%;align-items:center;gap:11px;min-width:0;line-height:1.5;animation:.28s cubic-bezier(.2,.8,.2,1) bar-up;display:flex}.feedback-ic{color:#fff;border-radius:50%;flex:none;place-items:center;width:36px;height:36px;display:grid}.feedback.good .feedback-ic{background:var(--good)}.feedback.bad .feedback-ic{background:var(--bad)}.feedback-text{min-width:0}.feedback-text b{font-size:16px;display:block}.feedback.good b{color:var(--good-ink)}.feedback.bad b{color:var(--bad-ink)}.feedback small{color:var(--ink);overflow-wrap:anywhere;margin-top:1px;font-size:13px;display:block}.word-card{text-align:center;padding:18px 16px}.slide-in-right{animation:.32s cubic-bezier(.2,.8,.2,1) slide-in-right}.slide-in-left{animation:.32s cubic-bezier(.2,.8,.2,1) slide-in-left}.number{color:var(--primary);letter-spacing:.08em;font-size:12px;font-weight:850}.word{letter-spacing:-.02em;overflow-wrap:anywhere;margin:8px 0 3px;font-size:38px;font-weight:900;line-height:1.1}.ipa{color:var(--muted);font:18px Georgia,Times New Roman,serif}.book-seg{border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-sm);background:#fff;grid-template-columns:1fr 1fr;gap:4px;margin:0 0 12px;padding:4px;display:grid}.book-seg button{min-height:var(--tap);border-radius:var(--r-sm);color:var(--muted);font:inherit;cursor:pointer;background:0 0;border:0;flex-direction:column;justify-content:center;align-items:center;font-size:15px;font-weight:800;line-height:1.25;display:flex}.book-seg button small{opacity:.85;font-size:11.5px;font-weight:700}.book-seg button[aria-selected=true]{background:var(--primary);color:#fff;box-shadow:0 4px 12px #5747d640}.day-chip .chip-title{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;max-width:128px;font-size:11.5px;font-weight:700;display:block;overflow:hidden}.day-chip[aria-pressed=true] .chip-title{color:#ffffffd9}.wtags{flex-wrap:wrap;justify-content:center;gap:6px;margin-top:8px;display:flex}.wtag{background:var(--primary-tint);min-height:24px;color:var(--primary-deep);border:1px solid #e3e0f7;border-radius:999px;align-items:center;padding:0 9px;font-size:12px;font-weight:750;display:inline-flex}.wtag.warn{background:var(--warn-soft);color:var(--warn-ink);border-color:var(--warn-line)}.wtag.good{background:var(--good-soft);color:var(--good-ink);border-color:var(--good-line)}.word.chunked{margin-bottom:.3em}.wc{-webkit-box-decoration-break:clone;box-decoration-break:clone;border-bottom:.075em solid #d3ccf6;border-radius:0 0 .55em .55em/0 0 .28em .28em;margin:0 .018em;padding-bottom:.03em;transition:color .15s,border-color .15s,border-width .15s}.ipa .wc{border-bottom-width:2px}.wc.s1{border-bottom-color:var(--primary-line)}.word .wc.s1{border-bottom-color:#a99ff0}.wc.tap{cursor:pointer;-webkit-user-select:none;user-select:none}.wc.tap:not(.on):hover{border-bottom-color:var(--primary)}.wc.tap:focus-visible{outline:2px solid var(--primary-line);outline-offset:2px;border-radius:.12em}.wc.on{color:var(--primary);border-bottom-color:var(--primary)}.word .wc.on{border-bottom-width:.11em}.ipa .wc.on{border-bottom-width:3px}.meaning{margin-top:10px;font-size:20px;font-weight:800}.pos{vertical-align:middle;color:var(--primary-deep);background:var(--primary-soft);border-radius:8px;margin-left:4px;padding:2px 8px;font-size:12px;font-weight:750;display:inline-block}.sound-row{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:12px;display:flex}.example{background:var(--primary-tint);border-radius:var(--r-lg);text-align:left;border:1px solid #ecebfa;width:min(100%,600px);margin:14px auto 0;padding:12px 14px;line-height:1.7}.example-instruction{color:var(--muted);margin-bottom:2px;font-size:12.5px;font-weight:750;display:block}.example-line{color:var(--ink);font-size:17px;font-weight:750;line-height:1.8}.example-token{appearance:none;color:inherit;font:inherit;line-height:inherit;background:0 0;border:0;border-radius:7px;padding:3px 2px;transition:background-color .12s,color .12s}.example-token:hover{background:var(--primary-soft)}.example-token.example-target,.example-target{color:var(--primary);font-weight:900}.example-token.example-target{background:var(--primary-soft)}.example-token.speaking{background:var(--primary);color:#fff}.example-zh{color:var(--primary-deep);margin-top:2px;font-size:15px;font-weight:750;display:block}.example-actions{flex-wrap:wrap;gap:8px;margin-top:8px;display:flex}.example-status{color:var(--muted);margin-top:5px;font-size:13px;display:block}.tip{color:#58458a;text-align:left;align-items:flex-start;gap:7px;max-width:600px;margin:10px auto 0;font-size:13.5px;line-height:1.55;display:flex}.tip .icon{color:#8a73d6;width:18px;height:18px;margin-top:1px}.help-card .example b{font-size:16.5px;display:block}.help-card .example span{color:var(--muted);margin-top:2px;display:block}.quiz-card{flex-direction:column;padding:20px 16px 18px;display:flex}.qtype{color:var(--primary);letter-spacing:.08em;font-size:12px;font-weight:850}.prompt{text-align:center;overflow-wrap:anywhere;margin:14px 0 18px;font-size:32px;font-weight:900;line-height:1.3}.prompt.prompt-sentence{font-size:21px;font-weight:800;line-height:1.5}.prompt small{color:var(--muted);margin-top:6px;font-size:14px;font-weight:500;display:block}.choices{grid-template-columns:1fr;gap:10px;display:grid}.choice{border:1.5px solid var(--line);border-radius:var(--r-md);text-align:left;-webkit-user-select:none;user-select:none;background:#fff;justify-content:space-between;align-items:center;gap:10px;min-height:58px;padding:12px 14px 12px 16px;font-size:17px;font-weight:750;transition:border-color .15s,background-color .15s,opacity .2s,transform .12s;display:flex;box-shadow:0 3px #ebe9f6}.choice:hover:not(:disabled){border-color:var(--primary-line);background:#fbfaff}.choice:active:not(:disabled){transform:translateY(2px);box-shadow:0 1px #ebe9f6}.choice:disabled{cursor:default}.choice-mark{color:#fff;border-radius:50%;flex:none;place-items:center;width:28px;height:28px;display:grid}.choice-mark .icon{stroke-width:2.6px;width:18px;height:18px}.choice.correct{border-color:var(--good-line);background:var(--good-soft);color:var(--good-ink);box-shadow:0 3px #bfe9d4}.choice.correct .choice-mark{background:var(--good);animation:.25s cubic-bezier(.3,1.6,.5,1) mark-in}.choice.correct.picked{animation:.4s pop}.choice.wrong{border-color:var(--bad-line);background:var(--bad-soft);color:var(--bad-ink);animation:.34s shake;box-shadow:0 3px #f6c9d2}.choice.wrong .choice-mark{background:var(--bad);animation:.25s cubic-bezier(.3,1.6,.5,1) mark-in}.choice.dim{opacity:.5}.spell{width:100%;max-width:620px;margin:0 auto}.spell-answer{border-radius:var(--r-lg);background:var(--primary-tint);border:2px dashed #d9d7ea;flex-wrap:wrap;justify-content:center;align-items:center;gap:6px;min-height:74px;padding:12px;transition:background-color .25s,border-color .25s;display:flex}.spell-answer.done{border-style:solid;border-color:var(--good-line);background:var(--good-soft)}.spell-answer.missed{border-style:solid;border-color:var(--bad-line);background:var(--bad-soft)}.spell-slot{width:30px;height:44px;color:var(--primary);text-transform:lowercase;border-bottom:3px solid #b3aed6;justify-content:center;align-items:center;font-size:27px;font-weight:900;display:inline-flex}.spell-slot.filled{animation:.28s cubic-bezier(.3,1.6,.5,1) drop}.spell-answer.done .spell-slot{color:var(--good-ink);border-bottom-color:var(--good)}.spell-gap{width:18px;height:44px}.spell-mark{align-items:end;height:44px;font-size:25px;font-weight:900;display:inline-flex}.letter-pool{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:18px;display:flex}.letter-tile{border-radius:var(--r-md);color:#332a8b;text-transform:lowercase;-webkit-user-select:none;user-select:none;background:#fff;border:1.5px solid #cbc7ee;min-width:50px;height:52px;font-size:24px;font-weight:900;transition:transform .15s,background-color .15s,opacity .2s,box-shadow .15s;box-shadow:0 4px #dcd8f5}.letter-tile:hover{background:#f3f1ff;border-color:#9f96ec}.letter-tile:active{transform:translateY(3px);box-shadow:0 1px #dcd8f5}.letter-tile.used{opacity:.16;box-shadow:none;pointer-events:none}.letter-tile.wrong{background:var(--bad-soft);border-color:var(--bad-line);color:var(--bad-ink);animation:.34s shake}.letter-tile.hint-flash{animation:.7s 2 hint-pulse}.letter-tile.hint-persistent{color:#6d4a00;background:#fff4c7;border-color:#e1a82f;box-shadow:0 0 0 4px #e1a82f33,0 4px #ead18a}.spell-note{text-align:center;color:var(--muted);min-height:24px;margin-top:14px;font-size:14px;line-height:1.5}.spell-note.warn{color:var(--warn-ink);font-weight:700}.dictation-tools{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:12px;display:flex}.pronunciation{text-align:center;width:100%;max-width:590px;margin:0 auto}.pronunciation-word{color:var(--primary);margin:2px 0;font-size:40px;font-weight:900}.pronunciation-ipa{color:var(--muted);margin-bottom:16px;font:18px Georgia,Times New Roman,serif}.pronunciation-actions{grid-template-columns:1fr 1fr;gap:10px;display:grid}.record-status{border-radius:var(--r-md);background:var(--primary-tint);color:var(--primary-deep);max-width:520px;margin:14px auto 0;padding:12px 14px;font-size:14px;line-height:1.55;transition:background-color .2s,color .2s}.record-status.recording{background:var(--bad-soft);color:var(--bad-ink)}.rec-dot{background:var(--bad);vertical-align:middle;border-radius:50%;width:9px;height:9px;margin-right:6px;animation:1s ease-in-out infinite blink;display:inline-block}.match-note{text-align:center;color:var(--muted);margin:0 0 14px;font-size:14px;line-height:1.55}.match-grid{grid-template-columns:1fr 1fr;gap:10px;display:grid}.match-col{flex-direction:column;gap:10px;display:flex}.match-card{border:1.5px solid var(--line);border-radius:var(--r-md);text-align:center;-webkit-user-select:none;user-select:none;background:#fff;min-height:56px;padding:10px;font-size:16px;font-weight:750;transition:transform .18s,box-shadow .18s,background-color .2s,border-color .2s,opacity .3s;box-shadow:0 3px #ebe9f6}.match-card.en{color:var(--primary-deep)}.match-card.selected{border-color:var(--primary);background:var(--primary-soft);transform:translateY(-3px);box-shadow:0 10px 20px #5747d633}.match-card.matched{border-color:var(--good-line);background:var(--good-soft);color:var(--good-ink);opacity:.6;box-shadow:none;cursor:default;transform:none}.match-card.just{opacity:1;animation:.4s pop}.match-card.wrong{border-color:var(--bad-line);background:var(--bad-soft);color:var(--bad-ink);animation:.34s shake}.match-card.revealed{border-color:var(--warn-line);background:var(--warn-soft);color:var(--warn-ink);opacity:1;animation:.45s 2 hint-pulse}.match-status{text-align:center;min-height:22px;margin-top:14px}.result-card{text-align:center;padding:28px 18px 24px}.result-card h2{margin:8px 0 6px;font-size:24px}.result-card p{color:var(--muted);margin:0;line-height:1.6}.result-badge-ic{background:var(--good-soft);width:72px;height:72px;color:var(--good);border-radius:50%;place-items:center;margin:0 auto 10px;display:grid}.result-badge-ic .icon{stroke-width:2.6px;width:38px;height:38px}.stars{justify-content:center;align-items:flex-end;gap:6px;display:flex}.star{animation:.5s cubic-bezier(.3,1.6,.5,1) forwards star-pop;display:inline-flex;transform:scale(0)}.star .icon{width:50px;height:50px}.star:nth-child(2){margin-bottom:8px;animation-delay:.18s}.star:nth-child(2) .icon{width:62px;height:62px}.star:nth-child(3){animation-delay:.36s}.star.on{color:#f5b83d;filter:drop-shadow(0 4px 8px #f5b83d66)}.star.off{color:#e4e2f0}.score{grid-template-columns:repeat(3,1fr);gap:8px;max-width:520px;margin:18px auto 14px;display:grid}.score span{background:var(--primary-tint);border-radius:var(--r-md);color:var(--muted);border:1px solid #ecebfa;padding:12px 6px;font-size:12.5px}.score b{color:var(--ink);font-variant-numeric:tabular-nums;font-size:24px;display:block}.points{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;border-radius:999px;align-items:center;gap:6px;padding:6px 14px 6px 10px;font-size:14px;font-weight:800;display:inline-flex}.points .icon{color:#ffd572;width:18px;height:18px}.badges{flex-wrap:wrap;justify-content:center;gap:8px;margin-top:12px;display:flex}.badge-earned{color:#6f520f;background:#fff7e3;border:1px solid #efd9a0;border-radius:999px;align-items:center;gap:5px;padding:5px 11px 5px 8px;font-size:13px;font-weight:750;display:inline-flex}.badge-earned .icon{color:#c88a14;width:17px;height:17px}.word-list{grid-template-columns:1fr 1fr;gap:10px;display:grid}.word-item{border:1px solid var(--line);border-radius:var(--r-md);background:#fff;justify-content:space-between;gap:12px;padding:13px;display:flex}.word-item b{display:block}.word-item small{color:var(--muted)}.badge{background:var(--bad-soft);color:var(--bad-ink);white-space:nowrap;border-radius:999px;align-self:center;padding:4px 9px;font-size:12px;font-weight:700}.report-stats{grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:6px;display:grid}.report-stats>div{background:var(--primary-tint);border-radius:var(--r-md);text-align:center;padding:14px}.report-stats b{font-variant-numeric:tabular-nums;font-size:22px;display:block}.report-stats span{color:var(--muted);font-size:12.5px}.bar-chart{align-items:flex-end;gap:10px;height:130px;padding:6px 4px;display:flex}.bar-col{flex-direction:column;flex:1;justify-content:flex-end;align-items:center;gap:4px;height:100%;display:flex}.bar-track{background:#ececf4;border-radius:8px;flex:1;align-items:flex-end;width:100%;max-width:34px;display:flex;overflow:hidden}.bar{background:linear-gradient(180deg,var(--primary),#9b8fff);border-radius:8px 8px 0 0;width:100%}.bar-col span{color:var(--ink);font-size:11.5px}.bar-col small{color:var(--muted);font-size:11.5px}.report-days{flex-direction:column;gap:8px;display:flex}.report-day{align-items:center;gap:10px;display:flex}.report-day span{width:56px;font-size:13px;font-weight:800}.report-day .mini{background:#ececf4;border-radius:8px;flex:1;height:8px;overflow:hidden}.report-day .mini i{background:var(--primary);height:100%;display:block}.report-day small{color:var(--muted);text-align:right;width:44px}.listen-scope{flex-wrap:wrap;gap:9px;margin-bottom:14px;display:flex}.listen-now{background:var(--primary-tint);border-radius:var(--r-md);text-align:center;justify-content:center;align-items:center;min-height:72px;padding:22px 18px;font-size:20px;font-weight:800;display:flex}.listen-controls{justify-content:center;gap:10px;margin:16px 0;display:flex}.listen-controls .btn{min-width:64px}.listen-opts{color:var(--muted);flex-wrap:wrap;justify-content:center;gap:16px;font-size:13px;display:flex}.listen-opts label{align-items:center;gap:6px;display:flex}.listen-opts select{font:inherit;border-radius:var(--r-sm);border:1px solid var(--line);min-height:36px;color:var(--ink);background:#fff;padding:4px 8px}.toast{z-index:40;color:#fff;opacity:0;pointer-events:none;text-align:center;background:#262538;border-radius:12px;max-width:88%;padding:12px 16px;font-size:14px;transition:opacity .22s,transform .22s;position:fixed;bottom:96px;left:50%;transform:translate(-50%,20px)}.toast.show{opacity:1;transform:translate(-50%)}.dialog-backdrop{z-index:50;background:#1816306b;justify-content:center;align-items:flex-end;animation:.2s fade;display:flex;position:fixed;inset:0}.dialog{width:100%;padding:22px 20px max(18px,env(safe-area-inset-bottom));box-shadow:var(--shadow-lg);background:#fff;border-radius:24px 24px 0 0;animation:.3s cubic-bezier(.2,.8,.2,1) sheet-up}.dialog h3{margin:0 0 8px;font-size:19px}.dialog p{color:var(--muted);margin:0 0 18px;line-height:1.6}.dialog-actions{gap:10px;display:flex}.dialog-actions .btn{flex:1}.confetti{pointer-events:none;z-index:30;position:fixed;inset:0;overflow:hidden}.confetti i{top:-20px;left:var(--x);background:var(--h);width:9px;height:14px;animation:confetti-fall var(--d) ease-in forwards;border-radius:2px;position:absolute}@media (width<=650px){:root{--gutter:13px}.shell{padding-top:14px;padding-bottom:100px}.word-list{grid-template-columns:1fr}}@media (width>=700px){.wide-only{display:inline}.narrow-only{display:none}.shell{padding-top:24px}h1{font-size:19px}.hero{padding:24px 28px}.hero h2{font-size:26px}.hero-grid{gap:8px}.hero-grid div{text-align:left;padding:10px 12px}.hero-grid b{font-size:22px}.hero-grid span{font-size:12.5px}.groups{grid-template-columns:repeat(3,1fr);gap:12px}.head-main b{font-size:16.5px}.head-opts{gap:10px}.opt-chip{display:none}.seg{display:inline-flex}.thin-progress{height:8px;margin-bottom:16px}.practice-screen>.panel{margin-bottom:0}.word-card{padding:32px 40px}.word{margin:10px 0 4px;font-size:58px}.ipa{font-size:21px}.meaning{margin-top:14px;font-size:25px}.sound-row{margin-top:18px}.example{margin-top:20px;padding:16px 18px}.example-line{font-size:19px}.tip{margin-top:14px;font-size:14.5px}.quiz-card{padding:30px 32px 28px}.prompt{margin:20px 0 24px;font-size:44px}.prompt.prompt-sentence{font-size:26px}.choices{grid-template-columns:1fr 1fr;gap:12px}.choice{min-height:68px;font-size:18px}.spell-slot{width:36px;height:50px;font-size:31px}.letter-tile{min-width:60px;height:62px;font-size:27px}.pronunciation-word{font-size:56px}.pronunciation-actions{grid-template-columns:repeat(4,auto);justify-content:center}.match-card{min-height:64px;font-size:17px}.match-grid,.match-col{gap:12px}.result-card{padding:40px 32px 32px}.action-bar,.action-bar.is-good,.action-bar.is-bad{-webkit-backdrop-filter:none;backdrop-filter:none;background:0 0;border:0;margin:20px 0 32px;padding:0;position:static}.action-inner{justify-content:center;gap:12px}.action-inner>.btn,.action-inner>.next-row{flex:0 220px}.feedback{border-radius:var(--r-lg);border:1px solid;flex:100%;padding:14px 18px}.feedback.good{background:var(--good-soft);border-color:var(--good-line)}.feedback.bad{background:var(--bad-soft);border-color:var(--bad-line)}.dialog-backdrop{align-items:center}.dialog{border-radius:var(--r-xl);width:440px;padding:24px 26px 22px;animation:.22s pop-in}}@media (width>=1000px){.app-frame{padding-left:var(--rail)}.bottom{width:var(--rail);border-top:0;border-right:1px solid var(--line);padding:24px 10px;top:0;right:auto}.bottom-inner{flex-direction:column;justify-content:flex-start;gap:8px}.nav{min-height:66px;font-size:12.5px}.shell{padding-bottom:40px}.toast{bottom:40px}.practice-shell{max-width:1040px}.learn-card{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);align-items:center;gap:36px;padding:36px 44px;display:grid}.learn-card .example{margin-top:0}.quiz-card{width:100%;max-width:860px;margin-inline:auto}}@keyframes slide-in-right{0%{opacity:0;transform:translate(10px)scale(.98)}}@keyframes slide-in-left{0%{opacity:0;transform:translate(-10px)scale(.98)}}@keyframes fade-up{0%{opacity:0;transform:translateY(8px)}}@keyframes fade-down{0%{opacity:0;transform:translateY(-6px)}}@keyframes fade{0%{opacity:0}}@keyframes bar-up{0%{opacity:0;transform:scale(.97)}}@keyframes sheet-up{0%{transform:translateY(100%)}}@keyframes pop-in{0%{opacity:0;transform:scale(.94)}}@keyframes pop{0%{transform:scale(1)}40%{transform:scale(1.045)}to{transform:scale(1)}}@keyframes mark-in{0%{opacity:0;transform:scale(.4)}}@keyframes shake{20%{transform:translate(-6px)}40%{transform:translate(6px)}60%{transform:translate(-4px)}80%{transform:translate(3px)}}@keyframes tile-shake{25%{transform:translate(-5px)}50%{transform:translate(5px)}75%{transform:translate(-3px)}}@keyframes hint-pulse{0%,to{transform:scale(1)}50%{background:#fff4c7;border-color:#e1a82f;transform:scale(1.13);box-shadow:0 0 0 5px #e1a82f38}}@keyframes drop{0%{opacity:0;transform:translateY(-12px)scale(.7)}}@keyframes eq{0%,to{transform:scaleY(.35)}50%{transform:scaleY(1)}}@keyframes blink{50%{opacity:.25}}@keyframes star-pop{to{transform:scale(1)}}@keyframes confetti-fall{to{opacity:.15;transform:translateY(110vh)rotate(720deg)}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important;animation-delay:0s!important}.confetti{display:none}}
