:root{--tns-header-height:72px;--tns-shell-ink:#e6efff;--tns-shell-muted:#b4c7df;--tns-shell-line:#7797be66;--tns-shell-accent:#9be5dd;--tns-shell-panel:#101e34}
.tns-site-header{position:fixed;inset:0 0 auto;z-index:40;min-height:var(--tns-header-height);border-bottom:1px solid var(--tns-shell-line);background:#0d192bf2;backdrop-filter:blur(16px);font:14px/1.4 system-ui,sans-serif;color:var(--tns-shell-ink)}
.tns-header-inner{max-width:1440px;min-height:var(--tns-header-height);margin:auto;padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.tns-brand{display:inline-flex;align-items:center;gap:10px;color:var(--tns-shell-ink);text-decoration:none;white-space:nowrap;font-size:20px;font-weight:700;flex-shrink:0}
.tns-mark{width:40px;height:40px;color:#3e6979;flex-shrink:0}.tns-app-badge{font-size:12px;line-height:1;padding:7px 9px;background:#9be5dd1a;border:1px solid #9be5dd40;border-radius:7px;color:var(--tns-shell-accent)}
.tns-navigation,.tns-header-actions{display:flex;align-items:center;gap:22px}.tns-navigation{margin-left:auto}.tns-navigation a,.tns-navigation button{border:0;background:none;color:var(--tns-shell-ink);text-decoration:none;font:600 13px/1.4 system-ui;white-space:nowrap;cursor:pointer;padding:9px 0}.tns-navigation a:hover,.tns-navigation button:hover{color:var(--tns-shell-accent)}
.tns-header-actions{gap:8px}.tns-account,.tns-icon-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;border:1px solid var(--tns-shell-line);border-radius:9px;background:#182a42;color:var(--tns-shell-ink);font:500 13px system-ui;padding:8px 13px;cursor:pointer}.tns-icon-button{width:40px;padding:9px}.tns-account svg,.tns-icon-button svg{width:20px;height:20px;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.tns-account i{display:none;width:6px;height:6px;border-radius:50%;background:var(--tns-shell-accent)}.tns-account.is-authenticated i{display:block}.tns-menu-toggle{display:none}
.tns-learning-tools{position:fixed;z-index:55;display:flex;align-items:center;gap:2px;width:max-content;max-width:calc(100vw - 16px);padding:5px;border:1px solid #88aecc;border-radius:14px;background:#12263ef5;box-shadow:0 5px 24px #0007,0 0 0 1px #07102066;color:#eef7ff;font:600 13px system-ui;box-sizing:border-box;user-select:none;left:50%;top:50%}
.tns-learning-tools button{min-width:36px;min-height:40px;border:0;border-radius:9px;background:transparent;color:inherit;font:inherit;cursor:pointer;padding:6px}.tns-learning-tools button:hover{background:#abcdf322}.tns-learning-tools [hidden]{display:none!important}.tns-tool-actions{display:flex;align-items:center;gap:2px;flex-wrap:wrap;min-width:0}
.tns-learning-tools[data-expanded=false]{border-radius:999px;padding:3px;background:#142b44f5}.tns-learning-tools .tns-tools-expand{position:relative;display:flex;align-items:center;gap:9px;min-height:36px;padding:7px 14px;border-radius:999px;color:#b7f3e9;touch-action:none;cursor:grab}.tns-tools-expand svg{width:12px;height:12px}.tns-learning-tools .tns-tools-grip{min-width:26px;padding:4px;font-size:21px;touch-action:none;cursor:grab}.tns-learning-tools .is-dragging{cursor:grabbing!important}.tns-language-toggle{display:flex;align-items:center;gap:5px}.tns-language-toggle span{padding:5px;border-radius:5px}.tns-language-toggle span.active{background:#9be5dd;color:#10273a}.tns-language-toggle [aria-hidden]{padding:0;color:#cfdfef}.tns-tools-help span{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border:1.6px solid currentColor;border-radius:50%;font-size:17px;font-weight:600}.tns-learning-tools .tns-tools-reset{min-width:32px;font-size:22px}.tns-learning-tools .tns-tools-collapse{min-width:30px;font-size:22px}
.tns-tools-notify{position:absolute;top:-2px;right:-1px;width:8px;height:8px;border:2px solid #142b44;border-radius:50%;background:#ffc47c;pointer-events:none}
.tns-action{background:#203557;color:#e5eeff;border:1px solid #6179a580;border-radius:8px;padding:9px 12px;cursor:pointer}.tns-action:hover{background:#314e7d}.tns-action:disabled{opacity:.55;cursor:wait}
.tns-site-header a:focus-visible,.tns-site-header button:focus-visible,.tns-learning-tools button:focus-visible,.tns-action:focus-visible,.tns-dialog a:focus-visible,.tns-dialog input:focus-visible,.tns-dialog textarea:focus-visible{outline:3px solid #f7cc73;outline-offset:3px}
.tns-dialog{width:min(780px,calc(100vw - 28px));max-height:85dvh;box-sizing:border-box;border:1px solid #506583;border-radius:18px;background:#101c32;color:#ecf2ff;padding:20px;box-shadow:0 16px 80px #000a;font:15px/1.6 system-ui;margin:auto;inset:0;overflow:auto}.tns-dialog::backdrop{background:#0009;backdrop-filter:blur(3px)}.tns-dialog button,.tns-dialog input,.tns-dialog textarea{font:inherit}.tns-dialog header{display:flex;align-items:center;gap:10px;justify-content:space-between}.tns-dialog h2{margin:0;font-size:23px}.tns-dialog nav{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.tns-dialog [aria-selected=true]{border-color:#f3cc86;color:#ffe0a0}.tns-dialog input,.tns-dialog textarea{box-sizing:border-box;width:100%;background:#0a1427;color:#edf4ff;border:1px solid #506583;border-radius:8px;padding:10px}.tns-dialog a{color:#a4d4ff}.tns-dialog textarea{min-height:70px;resize:vertical}.tns-dialog [hidden]{display:none!important}
.tns-pair,.tns-note{padding:15px;background:#172740;border:1px solid #3c506e;border-radius:11px;margin:12px 0;overflow-wrap:anywhere}.tns-pair p,.tns-note p{white-space:pre-wrap;margin:7px 0}.tns-pair [lang=en],.tns-note [lang=en]{color:#b8d9ff}.tns-muted{color:#acbdd6;font-size:13px}.tns-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.tns-status{min-height:24px;color:#ffe0a0}.tns-source{display:block;font-size:12px;color:#adc0de;margin:8px 0}.tns-dictionary{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}.tns-dictionary .tns-action{text-align:left;overflow-wrap:anywhere}.tns-note details{margin-top:12px}.tns-note summary{cursor:pointer}.tns-note .tns-answer[hidden]{display:none}.tns-guide-steps{list-style:none;counter-reset:guide;display:grid;gap:14px;margin:18px 0}.tns-guide-steps li{position:relative;counter-increment:guide;padding:0 0 0 40px}.tns-guide-steps li:before{content:counter(guide);position:absolute;left:0;top:0;border-radius:50%;width:28px;height:28px;display:grid;place-items:center;background:#9be5dd22;color:#b7f3e9;font-weight:700}.tns-guide-steps p{margin-top:4px;color:#b4c7df}
body:has(.tns-dialog[open]) #tns-tools{visibility:hidden}body.showcase-active #tns-tools,body.showcase-active #tns-header{display:none}
#date-display{top:calc(var(--tns-header-height) + 14px)}#top-buttons{top:calc(var(--tns-header-height) + 14px)}#ic-panel{max-height:calc(100dvh - var(--tns-header-height) - 28px);top:calc(var(--tns-header-height) + 14px)}
@media(max-width:1100px){.tns-header-inner{gap:16px;padding-inline:16px}.tns-navigation{gap:15px}.tns-navigation a,.tns-navigation button{font-size:12px}.tns-brand{font-size:18px}}
@media(max-width:920px){.tns-navigation{display:none;position:absolute;top:100%;left:0;right:0;margin:0;padding:14px 20px;background:#102239;border-bottom:1px solid var(--tns-shell-line);box-shadow:0 8px 22px #0006;flex-wrap:wrap;gap:12px 24px}.tns-menu-open .tns-navigation{display:flex}.tns-menu-toggle{display:inline-flex}}
@media(max-width:700px){:root{--tns-header-height:64px}.tns-header-inner{padding:10px 12px;gap:10px}.tns-brand{font-size:16px;gap:7px}.tns-mark{width:34px;height:34px}.tns-app-badge{font-size:10px;padding:6px}.tns-account span{display:none}.tns-account{padding:8px;width:38px;position:relative}.tns-account i{position:absolute;right:5px;top:5px}.tns-icon-button{width:36px;min-height:38px;padding:8px}.tns-header-actions{gap:5px}.tns-learning-tools button{min-height:44px}.tns-learning-tools .tns-tools-expand{min-height:44px}.tns-dialog{padding:14px;max-height:88dvh}.tns-dialog h2{font-size:19px}.tns-dialog nav .tns-action{padding:8px 10px}#date-display{top:calc(var(--tns-header-height) + 12px);left:12px;right:auto;font-size:9px;letter-spacing:0;padding:6px 8px}#top-buttons{top:calc(var(--tns-header-height) + 48px);right:12px;gap:6px}#ctrl-handle{min-height:30px}#ctrl-hint{max-width:78%;font-size:9px!important}}
@media(max-width:360px){.tns-brand{font-size:14px;gap:6px}.tns-mark{width:30px;height:30px}.tns-header-inner{gap:5px;padding-inline:8px}.tns-header-actions{gap:4px}.tns-account,.tns-icon-button{width:32px}.tns-app-badge{padding:5px;font-size:9px}}

#ic-panel .ic-body,#qz-question,.qz-explain-text{user-select:text}
body:has(.tns-menu-open) #tns-tools{visibility:hidden}

:root{--tns-header-height:72px;--font-sans:system-ui,-apple-system,"Segoe UI",sans-serif;--font-display:Georgia,serif}
.geo-scope{font:13px/1.65 system-ui,sans-serif;background:#f4a85314;border:1px solid #f4a85370;border-radius:10px;padding:10px;margin:0 0 20px;color:#f1cf9b}.geo-scope summary{cursor:pointer;font-weight:600}.geo-scope p{padding-top:10px;white-space:pre-wrap}.geo-scope a{color:#f1cf9b}
.brand-title em{display:block}
@media(max-width:900px){.kp-overlay{max-height:150px;overflow:auto}.kp-overlay.collapsed{max-height:45px}}
body{padding-top:var(--tns-header-height)}#app{height:calc(100dvh - var(--tns-header-height));grid-template-columns:minmax(250px,300px) minmax(0,1fr) minmax(230px,260px)}.canvas-wrap{min-width:0;min-height:0}.panel-left,.panel-right{overflow:auto;min-width:0}.brand-title{overflow-wrap:anywhere}.tns-site-header{z-index:400}.tns-learning-tools{z-index:410}.tns-dialog{z-index:500}.tns-dialog nav{position:static}.tns-dialog header{position:static}.tns-dialog-actions{display:flex;align-items:center;gap:6px;flex-shrink:0}.tns-dialog-actions .tns-action{font-size:12px;padding:7px 9px;white-space:nowrap}.tns-dialog h2{flex:1;min-width:0;letter-spacing:normal}.tns-site-header,.tns-learning-tools,.tns-dialog{font-family:system-ui,sans-serif}.tns-dialog [hidden],.tns-learning-tools [hidden]{display:none!important}.tns-dialog button{letter-spacing:normal}.tns-site-header button{width:auto}.tns-header-inner{max-width:1600px}
@media(max-width:900px){html,body{height:auto;overflow:auto}#app{display:flex;flex-direction:column;height:auto;min-height:calc(100dvh - var(--tns-header-height))}.canvas-wrap{order:0;height:54dvh;min-height:350px;flex:none}.panel-left{order:1}.panel-right{order:2}.panel-left,.panel-right{width:100%;overflow:visible;padding:18px;border:0;border-top:1px solid var(--line)}.kp-overlay{max-width:calc(100% - 20px)}.canvas-hint{max-width:calc(100% - 20px)}.brand-block{margin-bottom:18px}.site-header{padding-inline:18px}.site-footer{padding:18px}.tns-site-header .tns-icon-button{width:36px}}
@media(max-width:360px){.tns-brand{font-size:13px;gap:4px}.tns-mark{width:28px;height:28px}.tns-app-badge{font-size:9px;padding:4px}.tns-header-inner{gap:4px;padding-inline:7px}.tns-header-actions{gap:4px}.tns-site-header .tns-account,.tns-site-header .tns-icon-button{width:30px}.canvas-wrap{min-height:320px}}