*:where(:not(dialog)){box-sizing:border-box}:root{font-family:"Segoe UI","Microsoft YaHei",sans-serif;color:#101828;background:#f6f7fb;--blue:#3d5cf5;--violet:#7457f6;--muted:#667085;--line:#e7eaf0}body{margin:0}button,a,input,select{font:inherit}button,a{touch-action:manipulation}a{color:inherit;text-decoration:none}button{cursor:pointer}button,.button{display:inline-flex;align-items:center;justify-content:center;min-height:40px;border:1px solid var(--line);padding:9px 15px;background:white;border-radius:12px;color:#17234a;font-weight:650}button:hover,.button:hover,a:hover{color:var(--blue)}button:disabled{cursor:default;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #879bff;outline-offset:3px}.primary,.primary:hover{background:linear-gradient(90deg,var(--blue),#674ff5);color:#fff;border-color:transparent}.top{position:sticky;top:0;z-index:2;background:#fff;border-bottom:1px solid var(--line)}.bar{max-width:1240px;margin:auto;display:flex;gap:24px;align-items:center;min-height:72px;padding:10px 28px}.brand{display:flex;align-items:center;gap:10px;white-space:nowrap;font-size:20px;font-weight:800}.brand img{border-radius:10px;object-fit:contain}.brand b{color:var(--blue)}nav{display:flex;align-items:center;gap:17px;flex:1;color:#475467;font-size:14px;white-space:nowrap}main{max-width:1216px;min-height:70vh;margin:26px auto;padding:0 24px}.hero{display:grid;grid-template-columns:1.5fr 1fr;align-items:center;gap:26px;color:white;background:radial-gradient(ellipse at top right,#7354ee 0,transparent 60%),linear-gradient(120deg,#111a3a,#263c9e);border-radius:25px;padding:clamp(22px,5vw,52px);box-shadow:0 16px 36px #192f6526}.hero h1{font-size:clamp(32px,5vw,54px);margin:0 0 12px;line-height:1.14;letter-spacing:-.03em}.hero p{color:#e3e8ff;margin:0 0 23px;line-height:1.7}.hero .button{color:#192d80}.hero aside{border:1px solid #ffffff45;border-radius:19px;background:#ffffff13;padding:20px;min-width:0}.hero aside p{margin:8px 0 15px}.hero aside b{display:block;font-size:22px}.stats,.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:15px}.stats button,.paper,.panel{border-radius:19px;background:#fff;border:1px solid var(--line);box-shadow:0 4px 14px #1b2d5910}.stats button{display:block;text-align:left;padding:18px}.stats strong{display:block;font-size:26px;color:var(--blue);margin-bottom:6px}.muted,small{color:var(--muted)}.panel{padding:clamp(17px,4vw,34px);margin:18px 0}h2{margin:0 0 12px}p{line-height:1.6}.row,.filters{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px}.filters{justify-content:flex-start;margin:18px 0}.filters button[aria-pressed=true]{background:#edf0ff;color:#283dd2;border-color:#bac5ff}.filters select{margin-left:auto}select,input{border:1px solid #d0d5dd;border-radius:10px;padding:10px 12px;background:#fff;color:inherit}.paper{padding:18px;display:grid;gap:8px}.paper:hover{border-color:#8998ff}.paper b{font-size:17px}.paper span{color:var(--blue);font-size:14px;font-weight:650}.practice{max-width:890px;margin:auto}.progress{height:8px;border:0;border-radius:20px;display:block;width:100%;margin:12px 0 24px;accent-color:var(--blue)}.sentence{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin:22px 0 12px}.sentence h2{font-size:clamp(25px,5vw,43px);letter-spacing:-.02em;margin:0;overflow-wrap:anywhere}.tools,.actions{display:flex;align-items:center;flex-wrap:wrap;gap:8px}.actions{margin-top:28px}.translation,.result{margin:16px 0 0;background:#f0f3ff;border-radius:12px;padding:13px 16px}.result strong{color:#2d45ce;font-size:24px}.result p{margin:5px 0}.status{min-height:24px;color:#7c3e12}.history-item{margin:12px 0}.pager{justify-content:center;margin-top:22px}footer{text-align:center;padding:22px;color:var(--muted);font-size:13px}dialog{border:0;border-radius:20px;width:min(440px,calc(100vw - 32px));padding:24px;box-shadow:0 20px 65px #121c5050}dialog::backdrop{background:#121c5080}dialog label{display:grid;gap:6px;margin:13px 0}dialog h2{margin:0}dialog p{color:var(--muted)}#auth-error{color:#9c3526}
@media(max-width:850px){.bar{flex-wrap:wrap;gap:8px 16px;padding:10px 18px}.bar nav{order:3;overflow:auto;min-width:100%;padding:5px 0}.account{margin-left:auto}.hero{grid-template-columns:1fr}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:500px){main{padding:0 12px;margin:13px auto}.brand{font-size:15px;gap:5px}.brand img{width:29px;height:29px}.account{font-size:13px;padding:6px 8px}.stats{gap:6px}.stats button{padding:10px;font-size:13px}.stats strong{font-size:20px}.grid{grid-template-columns:1fr}.filters select{margin-left:0}}
#face-video{width:100%;aspect-ratio:4/3;object-fit:cover;background:#111a3a;border-radius:14px} button.correct{color:#106245;background:#e8fbf1;border-color:#8ed8b6;opacity:1}.tool-loading{opacity:.7}
[hidden]{display:none!important}
.playback-progress{display:flex;align-items:center;gap:10px;margin-top:12px;width:min(100%,430px);color:var(--muted);font-size:13px;font-variant-numeric:tabular-nums}
.playback-progress progress{width:100%;height:8px;accent-color:var(--blue)}
.playback-progress span{flex:none}
.status button{min-height:30px;padding:4px 8px}
:root{--surface:#fff;--soft:#f0f3ff;--lifted:0 7px 26px #121c5026;--key-bg:#eef1fb}
.bar>[data-open-settings]{flex:none}
.shortcut-hint{position:fixed;right:14px;bottom:14px;z-index:3;width:min(245px,calc(100vw - 24px));padding:10px 12px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--lifted);font-size:12px}
.shortcut-hint:not([open]){width:auto}
.shortcut-hint summary{cursor:pointer;font-weight:700}
.shortcut-hint ul{display:grid;grid-template-columns:1fr 1fr;gap:5px 8px;list-style:none;margin:7px 0;padding:0}
.shortcut-hint li{display:flex;gap:5px;align-items:center;white-space:nowrap}
.shortcut-hint kbd{min-width:22px;text-align:center;padding:2px 4px;border:1px solid var(--line);border-radius:4px;background:var(--key-bg);font:inherit;font-weight:700}
.shortcut-hint button{min-height:25px;margin-top:5px;padding:2px 7px;font-size:12px}
.key-fields{display:grid;grid-template-columns:1fr auto;align-items:center;gap:8px 16px}
.key-fields button{min-width:68px}
#settings h3{font-size:16px}
#settings-status{min-height:1.4em}
:root[data-theme=dark]{color-scheme:dark;color:#edf0f8;background:#10131c;--blue:#a7b4ff;--violet:#a894ff;--muted:#aeb8cd;--line:#394359;--surface:#1c2231;--soft:#26324d;--key-bg:#2c3650;--lifted:0 7px 26px #0006}
:root[data-theme=mono]{color-scheme:light;color:#131313;background:#ededed;--blue:#151515;--violet:#242424;--muted:#4c4c4c;--line:#b9b9b9;--surface:#fff;--soft:#efefef;--key-bg:#f3f3f3;--lifted:0 7px 26px #0002}
:root:is([data-theme=dark],[data-theme=mono]) :is(.top,.paper,.panel,.stats button,dialog,button,.button,input,select){background:var(--surface);color:inherit}
:root:is([data-theme=dark],[data-theme=mono]) :is(.translation,.result,button[aria-pressed=true],button.correct){background:var(--soft);color:inherit;border-color:var(--line)}
:root:is([data-theme=dark],[data-theme=mono]) :is(nav,.status,dialog p,#auth-error){color:var(--muted)}
:root:is([data-theme=dark],[data-theme=mono]) :is(.paper span,.result strong){color:var(--blue)}
:root[data-theme=dark] .primary{background:#a7b4ff;color:#141932}
:root[data-theme=dark] .hero{background:linear-gradient(120deg,#161f40,#343273)}
:root[data-theme=dark] .hero .button{color:#edf0f8}
:root[data-theme=mono] .primary{background:#161616;color:#fff}
:root[data-theme=mono] .hero{background:linear-gradient(120deg,#161616,#414141)}
:root[data-theme=mono] .hero p{color:#ededed}
:root[data-theme=mono] .hero .button{color:#161616}
:root[data-theme=mono] .brand img{filter:grayscale(1)}
:root[data-theme=mono] :focus-visible{outline-color:#3d3d3d}
@media(max-width:1380px){body:has(.shortcut-hint[open]){padding-bottom:140px}}
@media(max-width:520px){.shortcut-hint{right:8px;bottom:8px;padding:7px 9px}.bar{gap:8px}.bar>[data-open-settings]{font-size:13px;padding:6px 8px}.shortcut-hint ul{margin:5px 0}}
.bar nav{overflow:auto;min-width:0}
.reward-totals{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;margin:14px 0}
.reward-totals>div{background:var(--soft);border-radius:12px;padding:12px}
.reward-totals strong{display:block;margin-top:5px;font-size:21px}
.reading-results{padding-left:28px}
.reading-results li{padding:12px 0;border-bottom:1px solid var(--line)}
.reading-results li>small{display:block;margin:4px 0}
.reading-results li>div{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.reading-results details{margin:8px 0}
.reading-results audio{max-width:min(100%,320px)}
.reward-admin{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.reward-form{max-width:430px;margin-bottom:18px}
.reward-form label{display:grid;gap:6px;margin:10px 0}
.earned-points{font-weight:750;color:var(--blue)}
@media(max-width:850px){.bar nav{min-width:100%}}
.bar nav{overflow:visible;flex-wrap:wrap;gap:10px 15px;flex:1 1 auto}
.nav-more{position:relative}
.nav-more summary{cursor:pointer;color:var(--blue);list-style:none;padding:6px 9px;border:1px solid var(--line);border-radius:8px}
.nav-more summary::-webkit-details-marker{display:none}
.nav-more:not([open]) .close-nav,.nav-more[open] .open-nav{display:none}
.nav-more>div{position:absolute;top:calc(100% + 8px);right:0;min-width:145px;padding:8px;display:grid;background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:var(--lifted)}
.nav-more>div a{padding:9px 10px;white-space:nowrap}
@media(max-width:520px){.nav-more>div{left:auto;right:0}.bar nav{min-width:100%;gap:8px 12px}}
.product-media{display:grid;grid-template-columns:repeat(auto-fit,minmax(90px,1fr));gap:7px}
.product-media a{display:block;min-width:0}
.product-media img,.product-media video{display:block;width:100%;max-height:210px;object-fit:contain;background:var(--soft);border-radius:7px}
.reward-form textarea{min-height:75px;border:1px solid var(--line);border-radius:9px;padding:9px;font:inherit}
.nav-more:not([open])>div{display:none}