:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--paper:#141516;--rail:#18191b;--panel:#1c1d20;--knowledge-card:#222936;--surface:var(--panel);--soft:#24262b;--input:#16191e;--hero:#1a2538;--ink:#f3f4f6;--text:#e6eaf1;--secondary:#c3cad5;--muted:#a5afbf;--line:#383d47;--border:var(--line);--line-strong:#616d80;--accent:#8ab0ff;--accent-strong:#548dff;--accent-soft:#1e2b43;--primary:#486dc9;--primary-hover:#4b72c7;--on-primary:#fff;--warn:#edc58b;--warn-bg:#30271d;--warn-line:#75603d;--danger:#ffb4aa;--danger-bg:#322224;--danger-line:#825151;--success:#a7d6bd;--success-bg:#203029;--radius:0px}*{box-sizing:border-box}html,body{background:var(--paper);min-height:100%;color:var(--text);-webkit-font-smoothing:antialiased;margin:0;font-family:Inter,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid var(--accent);outline-offset:3px}button{background:0 0;border:0}a{color:inherit;text-decoration:none}p{line-height:1.75}h1,h2,h3,p{margin-top:0}h1{letter-spacing:-1px;margin-bottom:12px;font-size:35px;font-weight:650;line-height:1.35}h2{letter-spacing:-.4px;font-size:23px;line-height:1.4}h3{font-size:17px;font-weight:600;line-height:1.5}.button{white-space:nowrap;border-radius:0;justify-content:center;align-items:center;gap:9px;min-height:44px;padding:12px 19px;font-size:14px;font-weight:550;transition:background .15s,transform .15s;display:inline-flex}.button:active{transform:translateY(1px)}.primary{background:var(--primary);color:var(--on-primary)}.primary:hover:not(:disabled){background:var(--primary-hover)}.secondary{background:var(--panel);border:1px solid var(--line)}.secondary:hover:not(:disabled){background:var(--soft)}.ink{background:var(--primary);color:var(--on-primary)}.full{width:100%}.muted{color:var(--muted)}.small{font-size:13px}.fine{color:var(--muted);font-size:12px;line-height:1.7}.eyebrow{letter-spacing:2.2px;color:var(--accent);margin-bottom:14px;font-size:11px;font-weight:650;display:block}.wordmark{color:var(--ink);letter-spacing:-1px;align-items:center;gap:8px;font-size:24px;font-weight:720;display:flex}.wordmark svg{stroke-width:2.3px}.wordmark span{color:var(--muted);letter-spacing:.5px;margin-left:14px;font-size:12px;font-weight:400}.app-shell{min-height:100vh;display:flex}.sidebar{background:var(--rail);border-right:1px solid var(--line);z-index:30;flex-direction:column;width:230px;padding:32px 21px 22px;display:flex;position:fixed;inset:0 auto 0 0}.sidebar .wordmark{font-size:23px}.workspace-label{color:var(--muted);letter-spacing:1px;margin:17px 0 34px 40px;font-size:11px}.sidebar nav{flex-direction:column;gap:7px;display:flex}.sidebar nav button{text-align:left;color:var(--muted);border-radius:0;align-items:center;gap:13px;min-height:50px;padding:14px 16px;font-size:14px;display:flex;position:relative}.sidebar nav button:hover{background:var(--soft)}.sidebar nav button.active{background:var(--soft);color:var(--ink);font-weight:650}.sidebar nav i{background:var(--panel);text-align:center;border-radius:0;min-width:21px;margin-left:auto;padding:1px 5px;font-size:11px;font-style:normal}.sidebar-bottom{margin-top:auto;padding-top:30px}.small-card{border-top:1px solid var(--line);color:var(--muted);padding:23px 6px 13px;font-size:11px;line-height:1.7}.small-card p{color:var(--muted);margin:7px 0 0;font-size:11px}.green-dot,.status-dot{background:var(--success);border-radius:50%;width:5px;height:5px;margin-right:6px;display:inline-block}.account-button{text-align:left;align-items:center;gap:10px;width:100%;padding:13px 4px 0;font-size:13px;display:flex}.account-button>svg{color:var(--muted);margin-left:auto}.account-button small{color:var(--muted);margin-top:4px;font-size:11px;display:block}.avatar{background:var(--accent-soft);width:35px;height:35px;color:var(--ink);border-radius:50%;place-items:center;font-size:14px;display:grid}.main{width:calc(100% - 230px);margin-left:230px}.topbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;height:75px;padding:0 43px;display:flex}.desktop-breadcrumb,.privacy-label{color:var(--muted);align-items:center;gap:10px;font-size:12px;display:flex}.privacy-label{font-size:11px}.mobile-brand{display:none}.dev-label{letter-spacing:.2px;text-align:right;color:var(--muted);padding:9px 44px 0;font-size:11px}.page{max-width:1240px;margin:auto;padding:35px 43px 70px}.page-heading{justify-content:space-between;align-items:center;gap:20px;margin-bottom:33px;display:flex}.page-heading p{color:var(--muted);margin:0;font-size:14px}.page-heading .button{flex-shrink:0}.page-heading .eyebrow{margin-bottom:12px}.today-hero{background:var(--hero);border:1px solid var(--line);border-radius:0;justify-content:space-between;align-items:center;min-height:274px;padding:31px 35px;display:flex;position:relative;overflow:hidden}.today-hero h2{letter-spacing:-3px;color:var(--text);margin:19px 0 12px;font-size:66px;font-weight:500;line-height:1.12}.today-hero h2 span{letter-spacing:-.6px;margin-left:12px;font-size:20px;font-weight:450}.today-hero p{color:var(--muted);margin-bottom:20px;font-size:12px}.pill{background:var(--accent-soft);color:var(--muted);border-radius:0;align-items:center;gap:7px;padding:7px 12px;font-size:11px;display:inline-flex}.pill.light{background:var(--accent-soft);color:var(--muted)}.pill.selected{background:var(--input);color:var(--ink)}.pill b{padding-left:6px;font-size:11px}.loop-illustration{flex-shrink:0;width:315px;height:220px;position:relative}.loop-ring{border:1.3px solid var(--accent);border-radius:50%;width:174px;height:128px;position:absolute;top:44px}.loop-ring.one{left:13px;transform:rotate(-28deg)}.loop-ring.two{right:13px;transform:rotate(28deg)}.orbit-center{background:var(--accent-soft);color:var(--accent);border-radius:50%;place-items:center;display:grid;position:absolute;inset:56px 102px}.orbit-word{background:var(--soft);border:1px solid var(--line);color:var(--muted);box-shadow:none;border-radius:0;padding:7px 12px;font-size:11px;position:absolute}.orbit-word.top{top:19px;left:67px}.orbit-word.right{top:103px;right:0}.orbit-word.bottom{bottom:17px;left:82px}.section-heading{justify-content:space-between;align-items:center;gap:20px;margin:34px 0 17px;display:flex}.section-heading h2{letter-spacing:0;margin:0;font-size:18px}.section-heading>span,.section-heading>button{color:var(--muted);align-items:center;gap:5px;font-size:11px;display:flex}.task-list{background:var(--panel);border:1px solid var(--line);border-radius:0;overflow:hidden}.task-row{text-align:left;border-bottom:1px solid var(--line);align-items:center;gap:19px;width:100%;padding:20px 23px;display:flex}.task-row:last-child{border-bottom:0}.task-row:hover{background:var(--soft)}.step-number{color:var(--muted);font-family:Consolas,Cascadia Mono,monospace;font-size:17px}.task-row h3{margin:0 0 4px;font-size:14px}.task-row p{color:var(--muted);margin:0;font-size:11px}.duration{color:var(--muted);white-space:nowrap;margin-left:auto;font-size:11px}.task-row>svg{color:var(--muted)}.material-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;display:grid}.material-card{border:1px solid var(--line);background:var(--panel);text-align:left;border-radius:0;min-width:0;padding:0;transition:transform .15s,box-shadow .15s;overflow:hidden}.material-card:hover{box-shadow:none;transform:translateY(-3px)}.material-cover{background:var(--soft);height:133px;color:var(--muted);justify-content:center;align-items:center;gap:13px;display:flex;position:relative}.material-card:nth-child(3n+2) .material-cover,.material-card:nth-child(3n+3) .material-cover{background:var(--soft);color:var(--muted)}.material-cover>span{letter-spacing:2px;font-size:11px;font-weight:650}.material-cover>i{border:1px solid var(--line);letter-spacing:1px;border-radius:0;padding:2px 5px;font-size:11px;font-style:normal;position:absolute;bottom:13px;left:17px}.material-card-body{padding:18px}.material-status{color:var(--muted);font-size:11px}.material-card-body h3{overflow-wrap:anywhere;min-height:48px;margin:11px 0 20px;font-size:16px}.material-card-body>div{color:var(--muted);justify-content:space-between;align-items:center;font-size:11px;display:flex}.start-card{background:var(--panel);border:1px dashed var(--line);border-radius:0;align-items:center;gap:20px;padding:28px;display:flex}.start-card>svg{color:var(--muted);flex-shrink:0}.start-card h3{margin:0 0 8px;font-size:15px}.start-card p{color:var(--muted);margin:0;font-size:12px}.start-card .button{margin-left:auto;font-size:12px}.filter-row{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.empty{text-align:center;border:1px dashed var(--line);background:var(--soft);border-radius:0;flex-direction:column;justify-content:center;align-items:center;min-height:360px;padding:45px 20px;display:flex}.empty-icon{background:var(--accent-soft);width:76px;height:76px;color:var(--accent);border-radius:50%;place-items:center;margin-bottom:22px;display:grid}.empty h3{margin-bottom:12px;font-size:20px}.empty p{max-width:440px;color:var(--muted);margin:0 0 23px;font-size:13px}.back{color:var(--accent);align-items:center;gap:6px;margin-bottom:25px;padding:0;font-size:12px;display:flex}.material-heading h1{overflow-wrap:anywhere;max-width:720px;font-size:29px}.material-heading select{max-width:155px;font-size:12px}.material-toolbar{background:var(--soft);border:1px solid var(--line);color:var(--muted);border-radius:0;justify-content:space-between;align-items:center;gap:16px;margin-bottom:22px;padding:15px 18px;font-size:12px;display:flex}.material-toolbar>span,.toggle{align-items:center;gap:8px;display:flex}.toggle{color:var(--muted);white-space:nowrap;margin:0;font-size:12px}.toggle input{width:15px;height:15px;accent-color:var(--accent-strong);margin:0}.segment-list{background:var(--panel);border:1px solid var(--line);border-radius:0;overflow:hidden}.segment{border-bottom:1px solid var(--line);gap:21px;padding:27px 26px;scroll-margin-top:24px;display:flex}.segment:last-child{border-bottom:0}.segment:target{background:var(--accent-soft)}.segment-number{color:var(--muted);min-width:16px;padding-top:6px;font-size:11px}.segment-content{flex:1;min-width:0}.english{letter-spacing:.1px;overflow-wrap:anywhere;color:var(--text);margin-bottom:12px;font-family:Inter,Segoe UI,sans-serif;font-size:20px;line-height:1.7}.translation{color:var(--secondary);margin:0;font-size:13px;line-height:1.9}.translation.pending{color:var(--muted);font-size:12px}.segment-actions{flex-wrap:wrap;align-items:center;gap:18px;margin-top:20px;display:flex}.segment-actions button{color:var(--accent);align-items:center;gap:6px;padding:4px 0;font-size:11px;display:flex}.segment-actions button:hover{color:var(--ink)}.source-note{color:var(--muted);align-items:flex-start;gap:8px;margin:22px 0;font-size:11px;line-height:1.7;display:flex}.source-note svg{flex-shrink:0;margin-top:1px}.inline-warning{background:var(--warn-bg);border:1px solid var(--warn-line);color:var(--warn);border-radius:0;justify-content:space-between;align-items:center;margin:15px 0;padding:15px 18px;font-size:12px;display:flex}.inline-warning p{margin:0}.inline-warning button{color:var(--warn);flex-shrink:0;text-decoration:underline}.mode-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;display:grid}.mode-card{background:var(--panel);border:1px solid var(--line);text-align:left;border-radius:0;min-height:200px;padding:30px;position:relative}.mode-card>svg:first-child{color:var(--muted);margin-bottom:24px}.mode-card>svg:last-child{color:var(--muted);position:absolute;top:28px;right:24px}.mode-card h3{margin-bottom:10px;font-size:19px}.mode-card p{color:var(--muted);margin:0;font-size:13px}.mode-card:hover{border-color:var(--line);background:var(--soft)}.quiet-note{text-align:center;color:var(--muted);margin-top:30px;font-size:12px}.practice-card{background:var(--panel);border:1px solid var(--line);border-radius:0;max-width:850px;margin:auto;padding:34px}.practice-card>h2{overflow-wrap:anywhere;margin:25px 0;font-size:26px;line-height:1.7}.practice-card details{background:var(--soft);border-radius:0;padding:15px}.practice-card summary{color:var(--muted);cursor:pointer;font-size:12px}.practice-card details p{margin-top:18px}.recorder-placeholder{border:1px dashed var(--line);text-align:center;border-radius:0;margin-top:30px;padding:35px 20px}.mic-circle{background:var(--accent-soft);width:75px;height:75px;color:var(--accent);border-radius:50%;place-items:center;margin:0 auto 20px;display:grid}.recorder-placeholder h3{font-size:17px}.recorder-placeholder p{color:var(--muted);margin-bottom:22px;font-size:12px}.collection-tabs{border-bottom:1px solid var(--line);gap:9px;margin-bottom:27px;display:flex}.collection-tabs>button{color:var(--muted);border-bottom:2px solid #0000;gap:9px;padding:13px 18px;font-size:13px;display:flex}.collection-tabs>button.selected{border-color:var(--accent);color:var(--accent)}.collection-tabs b{background:var(--soft);border-radius:0;padding:1px 7px;font-size:11px}.word-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;display:grid}.word-list article{background:var(--panel);border:1px solid var(--line);border-radius:0;min-width:0;padding:25px}.word-kind{color:var(--muted);background:var(--soft);border-radius:0;margin-bottom:16px;padding:3px 7px;font-size:11px;display:inline-block}.word-list h3{overflow-wrap:anywhere;font-size:20px}.word-list article>p{color:var(--secondary);font-size:13px}.word-list .fine{align-items:center;gap:6px;margin-top:23px;display:flex}.review-card{background:var(--panel);border:1px solid var(--line);text-align:center;border-radius:0;flex-direction:column;align-items:center;max-width:700px;margin:30px auto;padding:50px 35px;display:flex}.review-card h2{overflow-wrap:anywhere;margin:20px 0;font-size:29px}.review-card>.muted{font-size:13px}.review-card>.fine{margin-top:34px}.review-answer{border-top:1px solid var(--line);border-bottom:1px solid var(--line);width:100%;color:var(--accent);margin:12px 0 25px;padding:22px 10px;font-size:18px}.rating-buttons{grid-template-columns:repeat(4,1fr);gap:10px;width:100%;display:grid}.rating-buttons button{border:1px solid var(--line);background:var(--soft);min-height:45px;color:var(--muted);border-radius:0;font-size:13px}.rating-buttons button:hover{background:var(--soft)}.settings-card{background:var(--panel);border:1px solid var(--line);border-radius:0;max-width:640px;padding:32px}.settings-card>h2{margin-bottom:5px}.settings-card>.muted{margin-bottom:30px;font-size:13px}.settings-divider{background:var(--line);height:1px;margin:32px 0 23px}label{color:var(--secondary);margin:0 0 19px;font-size:12px;font-weight:500;display:block}input,textarea,select{border:1px solid var(--line);background:var(--input);width:100%;color:var(--text);border-radius:0;margin-top:8px;padding:12px 13px;font-size:14px;line-height:1.5;display:block}textarea{resize:vertical;min-height:90px}input::placeholder,textarea::placeholder{color:var(--muted);font-size:13px}select{cursor:pointer}.checkbox-label{align-items:center;gap:10px;font-weight:400;display:flex}.checkbox-label input{width:16px;height:16px;accent-color:var(--accent-strong);margin:0}.modal-backdrop{-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);z-index:80;background:#090b10b8;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.modal{background:var(--soft);border:1px solid var(--line);border-radius:0;width:min(680px,100%);max-height:calc(100dvh - 48px);padding:34px;position:relative;overflow-y:auto;box-shadow:0 16px 48px #0006}.modal.compact{width:min(520px,100%)}.modal h2{margin:12px 30px 10px 0;font-size:25px}.modal>.muted{margin-bottom:28px;font-size:12px}.modal-close{width:33px;height:33px;color:var(--muted);place-items:center;display:grid;position:absolute;top:21px;right:21px}.modal-footer{justify-content:space-between;align-items:center;gap:20px;margin-top:24px;display:flex}.auth-page{grid-template-columns:1.25fr 1fr;align-items:center;gap:90px;max-width:1190px;min-height:100vh;margin:auto;padding:60px 35px;display:grid}.auth-story .wordmark{margin-bottom:100px;font-size:27px}.auth-story>.eyebrow{margin-bottom:27px}.auth-story h1{letter-spacing:-1px;margin-bottom:20px;font-size:39px;line-height:1.65}.auth-story>p{color:var(--muted);font-size:15px;line-height:2.1}.loop-path{color:var(--muted);align-items:center;gap:14px;margin:31px 0 70px;font-size:11px;display:flex}.loop-path>span{border:1px solid var(--line);background:var(--soft);border-radius:0;padding:7px 12px}.auth-note{color:var(--muted);align-items:center;gap:8px;font-size:11px;display:flex}.auth-card{background:var(--panel);border:1px solid var(--line);box-shadow:none;border-radius:0;padding:37px 33px}.auth-card h2{margin:13px 0;font-size:28px}.auth-card>.muted{margin-bottom:30px;font-size:12px;line-height:1.9}.auth-card form .full{margin-top:4px}.auth-links{justify-content:space-between;gap:12px;margin:22px 0 28px;font-size:11px;display:flex}.auth-links button{color:var(--accent);padding:0}.auth-card>.fine{border-top:1px solid var(--line);margin:0;padding-top:22px;font-size:11px}.error-banner{background:var(--danger-bg);border:1px solid var(--danger-line);width:max-content;max-width:calc(100% - 28px);color:var(--danger);z-index:1000;border-radius:0;align-items:center;gap:14px;padding:13px 16px;font-size:13px;line-height:1.6;display:flex;position:fixed;top:14px;left:50%;transform:translate(-50%);box-shadow:0 16px 48px #0006}.error-banner>button{flex-shrink:0;display:flex}.toast{background:var(--accent-soft);color:var(--text);z-index:100;border-radius:0;align-items:center;gap:10px;max-width:calc(100% - 32px);padding:14px 19px;font-size:13px;display:flex;position:fixed;bottom:30px;left:50%;transform:translate(-50%);box-shadow:0 16px 48px #0006}.toast>svg{flex-shrink:0}.boot{min-height:100vh;color:var(--muted);flex-direction:column;justify-content:center;align-items:center;display:flex}.boot p{margin-top:20px;font-size:13px}.loading{min-height:300px;color:var(--muted);justify-content:center;align-items:center;gap:12px;font-size:13px;display:flex}.spin{animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (min-width:1500px){.page{padding-top:45px}.today-hero{min-height:290px}.material-cover{height:155px}}@media (max-width:1150px){.sidebar{width:205px;padding-left:17px;padding-right:17px}.sidebar .wordmark{font-size:21px}.main{width:calc(100% - 205px);margin-left:205px}.page{padding:30px 29px 60px}.topbar{padding:0 29px}.loop-illustration{transform-origin:100%;width:250px;margin-left:-30px;transform:scale(.85)}.today-hero{padding:28px}.today-hero h2{font-size:57px}.today-hero h2 span{font-size:17px}.material-grid{gap:14px}.material-cover{height:112px}.page-heading h1{font-size:30px}.auth-page{gap:45px}.auth-story h1{font-size:34px}.wordmark span{display:none}.start-card{flex-wrap:wrap}.start-card .button{margin-left:50px}}@media (max-width:820px){.sidebar{align-items:center;width:84px;padding:26px 10px 16px}.sidebar .wordmark{gap:0;font-size:0}.sidebar .wordmark svg{width:32px;height:32px}.workspace-label,.sidebar nav button span,.sidebar nav i,.small-card,.account-button>span:not(.avatar),.account-button>svg{display:none}.sidebar nav{width:100%;margin-top:45px}.sidebar nav button{justify-content:center;padding:15px}.sidebar-bottom{width:100%}.account-button{justify-content:center;padding:0}.main{width:calc(100% - 84px);margin-left:84px}.material-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.auth-page{grid-template-columns:1fr;gap:35px;max-width:540px;padding:40px 25px}.auth-story .wordmark{margin-bottom:43px}.auth-story h1{font-size:30px;line-height:1.6}.auth-story>.eyebrow{margin-bottom:17px;font-size:11px}.auth-story>p,.loop-path,.auth-note{display:none}.auth-card{padding:30px}.loop-illustration{display:none}.today-hero{min-height:245px}.topbar{height:65px}.page-heading{align-items:flex-start}.page-heading .button{padding:11px 13px;font-size:12px}}@media (max-width:600px){html,body{background:var(--paper)}.sidebar{width:100%;height:calc(71px + env(safe-area-inset-bottom));padding:3px 7px env(safe-area-inset-bottom);background:var(--rail);border:0;border-top:1px solid var(--line);-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);display:block;inset:auto 0 0}.sidebar>.wordmark,.sidebar-bottom{display:none}.sidebar nav{grid-template-columns:repeat(4,1fr);gap:0;height:67px;margin:0;display:grid}.sidebar nav button{color:var(--muted);border-radius:0;flex-direction:column;gap:5px;min-height:0;padding:9px 2px;font-size:11px}.sidebar nav button span{font-size:11px;display:inline}.sidebar nav button.active{color:var(--muted);background:0 0}.sidebar nav button.active:before{content:"";background:var(--accent-strong);border-radius:0;width:17px;height:2px;position:absolute;top:2px}.sidebar nav button:hover{background:0 0}.sidebar nav i{display:none}.main{width:100%;margin:0}.topbar{border-bottom:1px solid var(--line);height:64px;padding:0 21px}.desktop-breadcrumb{display:none}.mobile-brand{letter-spacing:-.6px;align-items:center;gap:6px;font-size:19px;font-weight:700;display:flex}.privacy-label{gap:5px;font-size:11px}.dev-label{padding:7px 20px 0;font-size:11px}.page{padding:27px 20px calc(100px + env(safe-area-inset-bottom))}.page-heading{gap:10px;margin-bottom:25px}.page-heading h1{letter-spacing:-.7px;margin-bottom:10px;font-size:26px}.page-heading .eyebrow{letter-spacing:1.7px;margin-bottom:12px;font-size:11px}.page-heading p{font-size:11px;line-height:1.9}.page-heading .button{border-radius:0;gap:0;width:39px;min-height:39px;margin-top:27px;padding:9px;font-size:0}.page-heading .button svg{width:20px;height:20px}.today-hero{background:var(--hero);border-radius:0;min-height:242px;padding:24px}.today-hero h2{margin:21px 0 12px;font-size:58px}.today-hero h2 span{letter-spacing:-.5px;margin-left:10px;font-size:16px}.today-hero p{margin-bottom:20px;font-size:11px}.today-hero .button{min-height:41px;padding:11px 14px;font-size:12px}.pill{font-size:11px}.section-heading{margin:29px 0 15px}.section-heading h2{font-size:16px}.section-heading>span,.section-heading>button{font-size:11px}.task-row{gap:13px;padding:18px 16px}.task-row h3{font-size:12px}.task-row p{margin-top:5px;font-size:11px}.step-number{font-size:14px}.duration{font-size:11px}.task-row>svg{width:14px}.material-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.material-cover{gap:7px;height:108px}.material-cover>svg{width:25px}.material-cover>span{letter-spacing:1px;font-size:11px}.material-cover>i{font-size:11px;bottom:10px;left:12px}.material-card-body{padding:14px 12px}.material-status{font-size:11px}.material-card-body h3{min-height:42px;margin:9px 0 15px;font-size:13px;line-height:1.6}.material-card-body>div{font-size:11px}.start-card{gap:13px;padding:22px 20px}.start-card>svg{width:23px}.start-card h3{font-size:13px}.start-card p{font-size:11px}.start-card .button{min-height:38px;margin-left:35px;padding:9px 12px;font-size:11px}.empty{min-height:340px;padding:38px 22px}.empty h3{font-size:18px}.empty p{font-size:12px}.filter-row>.small{font-size:11px}.material-heading h1{font-size:24px}.material-heading{display:block}.material-heading select{width:145px;max-width:none;min-height:40px;margin-top:16px}.material-toolbar{align-items:flex-start;gap:8px;padding:13px 12px;font-size:11px}.material-toolbar>span{gap:5px;max-width:180px;line-height:1.7}.material-toolbar>span svg{flex-shrink:0;width:15px}.toggle{gap:5px;margin-top:1px;font-size:11px}.toggle svg{display:none}.segment{gap:12px;padding:24px 17px}.segment-number{min-width:13px;padding-top:6px;font-size:11px}.english{margin-bottom:13px;font-size:18px;line-height:1.8}.translation{font-size:12px;line-height:1.9}.segment-actions{gap:11px 12px;margin-top:19px}.segment-actions button{font-size:11px}.segment-actions svg{width:13px}.source-note{font-size:11px}.mode-grid{gap:13px}.mode-card{border-radius:0;min-height:190px;padding:22px 18px}.mode-card h3{font-size:15px}.mode-card p{font-size:11px;line-height:1.9}.mode-card>svg:first-child{width:23px;margin-bottom:21px}.mode-card>svg:last-child{width:17px;top:21px;right:15px}.quiet-note{font-size:11px;line-height:1.9}.practice-card{padding:24px 19px}.practice-card>h2{margin:22px 0;font-size:21px}.recorder-placeholder{padding:28px 15px}.recorder-placeholder p{font-size:11px}.word-list{grid-template-columns:1fr;gap:14px}.word-list article{padding:23px}.word-list h3{font-size:18px}.word-list article>p{font-size:12px}.review-card{margin:20px 0;padding:35px 20px}.review-card h2{font-size:25px}.review-card>.muted{font-size:11px}.rating-buttons{grid-template-columns:repeat(2,1fr)}.settings-card{padding:25px 21px}.modal-backdrop{padding:14px}.modal{border-radius:0;max-height:calc(100dvh - 28px);padding:28px 22px}.modal h2{font-size:22px}.modal>.muted{font-size:11px}.modal-footer{flex-direction:column;align-items:stretch;gap:14px}.modal-footer .button{width:100%}.modal-close{top:16px;right:13px}input,textarea,select{font-size:16px}label{font-size:12px}.error-banner{font-size:12px;top:10px}.toast{bottom:calc(88px + env(safe-area-inset-bottom));min-width:230px;font-size:12px;line-height:1.6}.auth-page{gap:27px;padding:30px 22px}.auth-story .wordmark{margin-bottom:35px;font-size:23px}.auth-story h1{letter-spacing:-.6px;margin-bottom:0;font-size:27px}.auth-story>.eyebrow{letter-spacing:1.7px;font-size:11px}.auth-card{border-radius:0;padding:28px 25px}.auth-card h2{font-size:25px}.auth-card>.eyebrow,.auth-card>.muted,.auth-links{font-size:11px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.topbar-actions{align-items:center;gap:12px;display:flex}.mobile-account{display:none}.minute-presets{gap:8px;margin:-4px 0 22px;display:flex}.minute-presets button{border:1px solid var(--line);border-radius:0;min-height:40px;padding:8px 15px;font-size:13px}.minute-presets .selected{background:var(--soft);border-color:var(--accent)}@media (max-width:600px){.mobile-account{justify-content:center;align-items:center;width:44px;height:44px;padding:0;display:flex}.topbar-actions{gap:8px}.topbar{padding-right:14px}.segment-actions button{min-height:44px;font-size:12px}.segment-actions svg{width:15px}.segment-actions{gap:10px;margin-top:12px}.auth-links button{min-height:44px}.modal-close{min-width:44px;min-height:44px}}.import-tabs{border-bottom:1px solid var(--line);gap:9px;margin:0 0 24px;display:flex}.import-tabs button{border-bottom:2px solid #0000;min-height:44px;padding:12px 20px;font-size:13px}.import-tabs [aria-selected=true]{color:var(--accent);border-bottom-color:var(--accent)}.file-picker{border:1px dashed var(--line);background:var(--soft);text-align:center;overflow-wrap:anywhere;border-radius:0;flex-direction:column;align-items:center;gap:9px;padding:25px 15px;display:flex}.file-picker>svg{color:var(--muted)}.file-picker>strong{max-width:100%;font-size:15px}.file-picker>span{color:var(--muted);font-size:11px}.file-picker input{background:var(--input);max-width:100%;font-size:12px}.upload-note{color:var(--success);background:var(--success-bg);border-radius:0;padding:13px 15px;font-size:12px;line-height:1.8}.upload-progress{background:var(--soft);border-radius:0;margin:15px 0;padding:15px}.upload-progress>div{justify-content:space-between;gap:10px;margin-bottom:9px;font-size:11px;display:flex}progress{width:100%;height:9px;accent-color:var(--accent-strong)}.upload-error{color:var(--danger);background:var(--danger-bg);border:1px solid var(--danger-line);border-radius:0;padding:12px 14px;font-size:12px;line-height:1.8}.upload-actions{flex-wrap:wrap;gap:10px;margin:22px 0 14px;display:flex}.media-player{border:1px solid var(--line);background:var(--panel);border-radius:0;margin:0 0 24px;padding:18px}.media-player video{background:#0d0f12;border-radius:0;width:100%;max-height:480px;display:block}.media-player audio{width:100%;height:54px;display:block}.media-player>.fine{margin:12px 0 0}.player-controls{flex-wrap:wrap;align-items:center;gap:15px;margin-top:13px;display:flex}.player-controls>label{align-items:center;gap:8px;margin:0;font-size:11px;display:flex}.player-controls select{width:85px;min-height:44px;margin:0;padding:7px;font-size:13px}.player-sentences{gap:6px;display:flex}.player-sentences button,.refresh-media{justify-content:center;align-items:center;gap:5px;min-height:44px;padding:8px;font-size:11px;display:flex}.player-sentences .selected{background:var(--input);border-radius:0}.refresh-media{color:var(--accent);margin-left:auto}@media (max-width:600px){.upload-actions .button{white-space:nowrap;flex:1;font-size:12px}.media-player{padding:12px}.player-controls{gap:8px}.player-controls select{font-size:16px}.file-picker{padding:20px 12px}}.recorder{border:1px solid var(--line);background:var(--soft);border-radius:0;margin:25px 0;padding:24px}.recorder-heading{align-items:center;gap:15px;margin-bottom:20px;display:flex}.recorder-heading .mic-circle{flex-shrink:0;width:50px;height:50px;margin:0}.recorder-heading h3{margin:0;font-size:19px}.recorder-heading p{color:var(--muted);margin:7px 0 0;font-size:12px}.recorder-actions{flex-wrap:wrap;align-items:center;gap:10px;margin:18px 0;display:flex}.recording-meter{flex-direction:column;gap:14px;margin:20px 0;display:flex}.recording-meter>span{font-variant-numeric:tabular-nums;color:var(--text);font-size:34px}.recording-meter small{color:var(--muted);font-size:16px}.recording-meter meter{width:100%;height:13px}.recording-file{max-width:100%;font-size:12px;margin:0!important}.recording-file input{width:100%;max-width:280px;padding:7px;font-size:12px}.recording-preview audio,.answer-audio audio{width:100%;margin:18px 0 8px;display:block}.download-recording{min-height:44px;color:var(--accent);align-items:center;gap:7px;font-size:12px;display:inline-flex}.recording-markers{flex-wrap:wrap;gap:8px;display:flex}.recording-markers span{background:var(--soft);color:var(--muted);border-radius:0;align-items:center;gap:5px;padding:6px 9px;font-size:11px;display:flex}.recording-recovery{gap:9px;margin-bottom:22px;display:grid}.recording-recovery>strong{font-size:13px}.recording-recovery button{text-align:left;justify-content:flex-start}.recorder .fine{line-height:1.75}.attempt-history{border-top:1px solid var(--line);padding-top:24px}.attempt-history h3{font-size:16px}.attempt-tabs{flex-wrap:wrap;gap:8px;margin-bottom:25px;display:flex}.attempt-tabs button{background:var(--soft);border:1px solid var(--line);border-radius:0;min-height:44px;padding:10px 14px;font-size:12px}.attempt-tabs button[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent)}.answer-feedback{border-top:1px solid var(--line);padding:20px 0}.feedback-title{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;display:flex}.feedback-title h3{margin:10px 0;font-size:18px}.answer-audio{overflow:hidden}.answer-audio .refresh-media{margin:0 0 15px}.acoustic-status{background:var(--soft);color:var(--muted);border-radius:0;margin-top:25px;padding:18px}.acoustic-status h4,.text-feedback h4{margin:0 0 10px;font-size:14px}.acoustic-status p{margin:0 0 7px;font-size:13px}.text-feedback{padding:25px 0}.text-feedback h4{margin-top:25px}.text-feedback>p{font-size:14px;line-height:1.8}.text-feedback .english{background:var(--soft);border-radius:0;padding:16px 18px;font-size:17px}.feedback-issue{border-bottom:1px solid var(--line);padding:12px 0;font-size:13px;line-height:1.75}.checkbox-label{align-items:center;gap:8px;display:flex}.checkbox-label input{width:18px;margin:0}@media (max-width:600px){.recorder{margin:20px 0;padding:16px}.recorder-actions .button{min-height:44px;font-size:12px}.recording-file{flex-basis:100%}.recorder input,.recorder select{font-size:16px}.import-tabs{gap:2px}.import-tabs button{padding:12px 13px}.feedback-title .button{font-size:12px}.answer-feedback textarea{font-size:16px}.practice-card{padding:22px 17px!important}.recording-recovery button{white-space:normal;font-size:12px}.text-feedback .english{font-size:16px}}.saved-recording-markers{flex-wrap:wrap;align-items:center;gap:8px;margin-top:13px;display:flex}.saved-recording-markers>span{flex-basis:100%}.saved-recording-markers button{background:var(--soft);min-height:44px;color:var(--muted);border-radius:0;align-items:center;gap:7px;padding:9px 13px;font-size:12px;display:flex}.synthetic-example{border:1px solid var(--line,var(--line));background:var(--soft);border-radius:0;min-width:0;margin-top:22px;padding:18px}.synthetic-example h4{align-items:center;gap:8px;margin:0;display:flex}.synthetic-example select{border:1px solid var(--line);background:var(--input);width:100%;color:inherit;font:inherit;border-radius:0;margin:7px 0 14px;padding:10px 12px}.synthetic-badge{color:var(--muted);background:var(--accent-soft);white-space:nowrap;border-radius:0;padding:4px 8px;font-size:11px}.synthetic-player audio{width:100%;max-width:100%;margin:12px 0;display:block}.synthetic-script{white-space:pre-wrap;overflow-wrap:anywhere}.synthetic-task{border-top:1px solid var(--line);padding:8px 0}.synthetic-task p{font-size:13px}.transcription-status{border:1px solid var(--line);background:var(--soft);overflow-wrap:anywhere;border-radius:0;margin:20px 0;padding:20px}.transcription-heading{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.transcription-heading h3{align-items:center;gap:8px;margin:0;display:flex}.transcription-heading>span{color:var(--text);font-size:13px}.transcription-status p{margin:12px 0;line-height:1.65}.transcription-status .refresh-media{margin-top:10px}.transcription-issue,.transcription-conflict{border-top:1px solid var(--line);padding:12px 0}.transcription-conflict details{margin:12px 0}.transcription-conflict .english{white-space:pre-wrap;max-height:320px;overflow:auto}.transcription-warnings{color:var(--warn);padding-left:20px;font-size:13px;line-height:1.7}@media (max-width:600px){.transcription-status{padding:15px}.transcription-status .button{white-space:normal;max-width:100%}}.timed-sentence span[data-active=true]{background:var(--accent-soft);color:var(--accent);box-shadow:none;border-radius:0}.timed-sentence{white-space:pre-wrap}.question-preview details{margin:16px 0}.question-preview summary{cursor:pointer;font-size:13px;line-height:1.7}.question-content{border-top:1px solid var(--line);margin-top:24px;padding-top:12px}.question-content h3{margin-top:15px}.question-evidence{background:var(--soft);border-radius:0;margin:20px 0;padding:15px}.question-evidence blockquote{margin:12px 0 0;font-size:15px;line-height:1.8}.question-actions,.practice-source-actions,.feedback-decision{flex-wrap:wrap;align-items:center;gap:10px;margin:18px 0;display:flex}.practice-instructions{color:var(--muted);font-size:13px;line-height:1.8}.practice-source-actions button{min-height:44px;color:var(--accent);font-size:12px}.feedback-decision label{flex:1;min-width:190px;margin:0}.feedback-decision select{min-height:44px;margin-top:7px}.feedback-actions{margin-top:20px}.feedback-actions .fine{line-height:1.8}.feedback-dimensions{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:20px 0;display:grid}.feedback-dimensions>div{background:var(--soft);border-radius:0;padding:16px}.feedback-dimensions h4{flex-direction:column;gap:8px;display:flex;margin:0!important}.feedback-dimensions h4 span{color:var(--muted);font-size:12px;font-weight:400}.feedback-dimensions p{margin-bottom:0;font-size:13px;line-height:1.8}.meaning-clarification{background:var(--soft);border-radius:0;padding:18px}.feedback-issue .button{font-size:12px}@media (max-width:700px){.feedback-dimensions{grid-template-columns:1fr}.feedback-decision .button,.question-actions .button{white-space:normal;max-width:100%}.question-preview .english{font-size:17px}.feedback-decision{align-items:stretch}.feedback-actions .button{font-size:12px}.meaning-clarification{padding:14px}.meaning-clarification textarea{font-size:16px}}.vocabulary-source{flex-wrap:wrap;gap:12px;margin:14px 0;display:flex}.vocabulary-source a{color:var(--accent);text-underline-offset:3px;align-items:center;min-height:44px;font-size:12px;text-decoration:underline;display:inline-flex}.vocabulary-source a.button{min-width:44px;font-size:14px;text-decoration:none}.collection-refresh{align-items:center;gap:12px;margin-bottom:18px;font-size:12px;display:flex}.feedback-history{margin:18px 0;display:block}.feedback-history select{border:1px solid var(--line);background:var(--input);max-width:100%;color:var(--text);border-radius:0;margin-top:8px;padding:10px 12px;display:block}.review-workspace{margin-top:24px}.review-toolbar{flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:16px;display:flex}.review-toolbar .collection-tabs{margin:0 auto 0 0}.review-preferences,.review-management{background:var(--panel);border:1px solid var(--line);border-radius:0;margin:20px 0;padding:24px}.review-preferences label,.review-session label,.review-reschedule label{margin:16px 0;font-size:13px;display:block}.review-preferences input,.review-reschedule input,.review-management select{border:1px solid var(--line);background:var(--input);max-width:100%;color:var(--text);border-radius:0;margin-top:8px;padding:10px;display:block}.review-session textarea{border:1px solid var(--line);resize:vertical;border-radius:0;width:100%;margin-top:10px;padding:14px;line-height:1.6}.review-session .checkbox-label{align-items:center;gap:8px;display:flex}.review-workspace .review-card{text-align:left;max-width:900px;margin:24px 0;padding:30px}.review-card-state{color:var(--muted);flex-wrap:wrap;justify-content:space-between;gap:16px;margin-bottom:24px;font-size:12px;display:flex}.review-session h2{overflow-wrap:anywhere;font-size:24px;line-height:1.6}.review-session blockquote{background:var(--soft);border-radius:0;margin:18px 0;padding:20px}.review-buttons,.review-controls{flex-wrap:wrap;gap:10px;margin:22px 0;display:flex}.review-controls{border-top:1px solid var(--line);padding-top:24px}.review-card-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:18px 0;display:grid}.review-card-list button{text-align:left;background:var(--soft);border:1px solid var(--line);overflow-wrap:anywhere;border-radius:0;flex-direction:column;gap:9px;padding:15px;display:flex}.review-card-list button.selected{background:var(--input);border-color:var(--accent)}.review-card-list span{color:var(--muted);font-size:11px}.review-history{border-top:1px solid var(--line);margin-top:20px;padding-top:22px}.review-history>div:not(.review-buttons){border-bottom:1px solid var(--line);overflow-wrap:anywhere;padding:12px 0}.review-audio{border:1px solid var(--line);border-radius:0;margin:18px 0;padding:16px}.review-audio audio{width:100%;margin:12px 0;display:block}.review-reschedule{background:var(--soft);border-radius:0;padding:18px}.review-preferences .button{margin-top:12px}@media (max-width:700px){.review-workspace .review-card{padding:20px 16px}.review-session h2{font-size:20px}.review-card-list{grid-template-columns:1fr}.review-preferences,.review-management{padding:20px 16px}.review-toolbar{gap:8px}.review-toolbar .button{padding:10px 12px;font-size:11px}.review-session .rating-buttons{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.review-session .rating-buttons button{padding:12px 6px}.review-controls .button,.review-buttons .button{font-size:12px}.review-card-state{font-size:11px}}.today-plan{margin-bottom:36px}.plan-tools,.plan-task-controls{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.plan-tools{margin:16px 0}.plan-settings,.plan-task,.plan-history{border:1px solid var(--border,var(--line));background:var(--panel);border-radius:0;margin:16px 0;padding:24px}.plan-settings label{gap:8px;max-width:300px;margin:18px 0;display:grid}.plan-settings input{border:1px solid var(--line);border-radius:0;width:100%;padding:12px}.plan-task-heading{align-items:flex-start;gap:16px;display:flex}.plan-task-heading>div{flex:1;min-width:0}.plan-task h3{overflow-wrap:anywhere;margin:0;font-size:19px}.plan-task-heading p{color:var(--muted);margin:7px 0 0;font-size:13px}.plan-task-controls{margin-top:20px}.plan-task.completed{background:var(--success-bg)}.plan-task.paused,.plan-task.skipped{background:var(--soft)}.plan-order{border:1px solid var(--line);background:var(--panel);border-radius:0;place-items:center;min-width:42px;min-height:42px;display:grid}.plan-task .text-button,.plan-alternatives a{color:var(--accent);font-size:13px;text-decoration:underline}.plan-alternatives{border-top:1px solid var(--line);margin-top:22px;padding-top:18px}.plan-alternatives article{background:var(--soft);border-radius:0;margin:12px 0;padding:18px}.plan-alternatives article h4{margin-top:0}.plan-alternatives article .button{margin-top:16px;display:block}.plan-history article{border-bottom:1px solid var(--line);padding:12px 0}.plan-summary{line-height:1.8}.plan-conflict{margin:16px 0}.plan-task .inline-warning{margin-top:15px}.today-plan .section-heading{align-items:flex-start;gap:12px}.today-plan .section-heading>span{text-align:right;overflow-wrap:anywhere;font-size:12px}.today-plan button:disabled{cursor:not-allowed;opacity:.5}@media (max-width:700px){.plan-settings,.plan-task,.plan-history{padding:18px}.plan-task h3{font-size:17px}.plan-task-heading{gap:12px}.plan-task-controls .button,.plan-tools .button{padding:11px 13px;font-size:13px}.plan-task-controls{gap:8px}.plan-task .step-number{flex-shrink:0}.today-plan .today-hero h2 span{line-height:1.5}}.word-fields{border:0;gap:18px;min-width:0;margin:18px 0;padding:0;display:grid}.word-fields label,.word-filters label{color:var(--text);gap:8px;font-size:14px;display:grid}.word-fields input,.word-fields textarea,.word-fields select,.word-filters input,.word-filters select{box-sizing:border-box;border:1px solid var(--line);background:var(--input);width:100%;min-width:0;color:var(--text);font:inherit;border-radius:0;padding:12px}.word-fields textarea{resize:vertical;line-height:1.6}.word-fields textarea[readonly]{background:var(--input)}.word-filters{flex-wrap:wrap;align-items:end;gap:12px;margin:24px 0;display:flex}.word-filters label{margin:0}.word-filters label:first-child{flex:1;min-width:180px}.word-editor,.word-history,.word-conflict,.word-merge{border:1px solid var(--line);background:var(--panel);border-radius:0;margin:20px 0;padding:26px}.word-editor h2,.word-merge h3{margin-top:0}.word-actions{flex-wrap:wrap;align-items:center;gap:10px;margin:18px 0;display:flex}.word-example-edit{background:var(--soft);border-radius:0;gap:12px;margin:12px 0;padding:16px;display:grid}.word-merge{background:var(--soft)}.merge-comparison{overflow-wrap:anywhere;grid-template-columns:1fr 1fr;gap:16px;display:grid}.merge-comparison>article,.merge-comparison>div{background:var(--soft);border-radius:0;padding:16px}.merge-comparison h4{margin:0 0 12px}.word-candidates article,.word-history article{border-bottom:1px solid var(--line);padding:18px 0}.word-notice{background:var(--success-bg);border-radius:0;margin:16px 0;padding:16px}.word-source-context{background:var(--soft);border-radius:0;margin:18px 0;padding:16px}.word-origin-links{gap:10px;margin:20px 0;display:grid}.word-origin-links button{justify-self:start}.word-history p,.word-list p,.word-list small,.word-merge p{white-space:pre-wrap;overflow-wrap:anywhere}.word-list .word-actions{margin-bottom:0}.word-editor .review-audio{max-width:640px}.word-fields:disabled{opacity:.8}.word-filters .button{min-height:43px}.word-history details{margin:12px 0}.vocabulary-source{flex-wrap:wrap}.word-merge .checkbox-label{margin:20px 0}.modal .word-merge{padding:16px}.vocabulary-workspace button:disabled{opacity:.5}@media (max-width:700px){.word-editor,.word-history,.word-conflict{padding:18px}.word-merge{padding:15px}.merge-comparison{grid-template-columns:1fr}.word-filters{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px;display:grid}.word-filters>label{min-width:0;margin:0}.word-filters>label:first-child,.word-filters>button{grid-column:1/-1}.word-filters input,.word-filters select{width:100%;min-width:0}.word-actions .button{padding:11px 13px;font-size:13px}.word-example-edit{padding:12px}.word-fields textarea{font-size:16px}.word-editor h2{font-size:23px}}.memory-workspace{border:1px solid var(--line);background:var(--panel);border-radius:0;margin:32px 0;padding:28px}.memory-workspace>.section-heading{flex-wrap:wrap;gap:12px;margin-top:0}.memory-global,.memory-confirm,.memory-proposal,.material-personalization{border:1px solid var(--line);background:var(--soft);border-radius:0;margin:20px 0;padding:20px}.memory-global{justify-content:space-between;align-items:center;gap:18px;display:flex}.memory-global p{margin:0}.memory-global .button{flex-shrink:0}.memory-toolbar{flex-wrap:wrap;align-items:end;gap:12px;margin:24px 0;display:flex}.memory-toolbar label{min-width:180px;margin:0}.memory-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;display:grid}.memory-list article{border:1px solid var(--line);overflow-wrap:anywhere;border-radius:0;padding:22px}.memory-text,.memory-confirm p,.memory-proposal p{white-space:pre-wrap;overflow-wrap:anywhere}.memory-source{flex-direction:column;gap:10px;margin:16px 0;font-size:13px;display:flex}.memory-source a{text-underline-offset:4px;color:var(--accent);text-decoration:underline}.memory-editor{max-width:800px;margin-top:20px}.memory-editor>form{gap:14px;margin-bottom:18px;display:grid}.memory-editor>form>label{margin:0}.memory-editor>form>.button{justify-self:start}.memory-confirm .button{margin:8px 8px 0 0}.memory-workspace button:disabled{opacity:.5}.material-personalization h3{margin-top:0}.material-personalization p{margin-bottom:0}.feedback-issue>.button{margin:5px 8px 0 0}@media (max-width:700px){.memory-workspace{padding:18px}.memory-list{grid-template-columns:1fr}.memory-global{flex-direction:column;align-items:stretch}.memory-global,.memory-confirm,.memory-proposal,.material-personalization{padding:16px}.memory-toolbar{grid-template-columns:1fr;display:grid}.memory-toolbar label{min-width:0}.memory-toolbar select,.memory-toolbar .button{width:100%}.memory-editor textarea{font-size:16px}.memory-workspace>.section-heading h2{font-size:24px}}.material-retrieval{border:1px solid var(--border,var(--line));background:var(--panel);border-radius:0;min-width:0;margin:24px 0;padding:24px}.retrieval-heading{justify-content:space-between;align-items:flex-start;gap:20px;display:flex}.retrieval-heading h3{margin:0 0 8px}.retrieval-heading p{margin:0 0 18px;line-height:1.7}.retrieval-status{background:var(--soft);border-radius:0;margin-bottom:18px;padding:16px}.retrieval-status p{margin-top:0;line-height:1.7}.material-retrieval textarea{resize:vertical;box-sizing:border-box;width:100%;min-height:100px}.material-retrieval .word-actions{flex-wrap:wrap;gap:12px;margin-top:14px;display:flex}.retrieval-results{gap:14px;margin-top:22px;display:grid}.retrieval-results article{border:1px solid var(--line);border-radius:0;min-width:0;padding:18px}.retrieval-results blockquote{overflow-wrap:anywhere;margin:0 0 14px;font-size:16px;line-height:1.8}.retrieval-results a{text-underline-offset:4px;font-size:13px}.retrieval-results .fine{margin:0}@media (max-width:600px){.material-retrieval{padding:18px}.retrieval-heading{display:block}.retrieval-heading>button{margin-bottom:18px}.material-retrieval .word-actions{display:grid}.material-retrieval .word-actions button{width:100%}}.agent-panel{border:1px solid var(--line,var(--line));background:var(--surface,var(--panel));border-radius:0;margin-top:20px;padding:20px}.agent-heading,.agent-toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.agent-heading h3{margin:0 0 6px}.agent-heading p{color:var(--muted,var(--muted));margin:0}.agent-toolbar{justify-content:flex-start;margin:14px 0}.agent-toolbar label{gap:6px;min-width:140px;display:grid}.agent-panel button,.agent-panel .button,.agent-panel select,.agent-panel summary{min-height:44px}.agent-panel select{border:1px solid var(--line,var(--line));max-width:100%;color:inherit;background:0 0;border-radius:0;padding:10px}.agent-turn{border-top:1px solid var(--line,var(--line));overflow-wrap:anywhere;padding:20px 0}.agent-question{background:var(--accent-soft);white-space:pre-wrap;border-radius:0;padding:14px 16px}.agent-question span{color:var(--muted);margin-bottom:8px;font-size:12px;display:block}.agent-section p,.agent-preview p,.agent-citations p{white-space:pre-wrap;line-height:1.75}.agent-preview{background:var(--soft);border:1px solid var(--line);border-radius:0;margin:14px 0;padding:18px}.agent-preview h4,.agent-review h4,.agent-citations h4{margin:0 0 10px}.agent-practice-question{font-size:17px;font-weight:650}.agent-preview summary{cursor:pointer;align-items:center;display:flex}.agent-review{margin:16px 0}.agent-review li{margin:10px 0;line-height:1.65}.agent-citations blockquote{border-left:3px solid var(--accent);background:var(--soft);border-radius:0;margin:12px 0;padding:14px}.agent-citations blockquote p{margin:8px 0}.agent-citations a{min-height:44px;padding:10px 0;line-height:1.5;display:inline-block}.agent-compose{border-top:1px solid var(--line,var(--line));padding-top:18px}.agent-compose .field{margin-bottom:12px}.agent-compose textarea{resize:vertical;width:100%;min-height:100px}.agent-job{background:var(--warn-bg);border-radius:0;margin:10px 0;padding:12px}.agent-job p{line-height:1.6}@media (max-width:600px){.agent-panel{padding:16px 12px}.agent-heading{align-items:flex-start}.agent-heading .button{width:100%}.agent-toolbar .button{flex:auto}.agent-panel .agent-preview{padding:14px}.agent-panel .button{white-space:normal;text-align:center}.agent-panel .agent-citations blockquote{padding:12px}.feedback-issue .agent-panel{margin-top:14px}}.agent-panel{font-size:15px}.agent-panel p{font-size:inherit}.agent-panel p.fine,.agent-panel .fine{font-size:12px}.agent-panel .agent-practice-question{font-size:17px}html{scrollbar-color:var(--line-strong) var(--paper)}body{font-family:Inter,Segoe UI,Microsoft YaHei UI,PingFang SC,sans-serif}::selection{background:var(--primary);color:var(--on-primary)}button,input,textarea,select{border-radius:0}svg{flex-shrink:0}h1,h2,h3{color:var(--ink)}h1{letter-spacing:-.7px;font-weight:550}.button{border:1px solid #0000;font-weight:500}.button.secondary{border-color:var(--line-strong);background:0 0}.button.secondary:hover:not(:disabled){background:var(--soft);border-color:var(--accent)}.button.primary,.button.ink{background:var(--primary);color:var(--on-primary)}.button.primary:hover:not(:disabled),.button.ink:hover:not(:disabled){background:var(--primary-hover)}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px}button:disabled{opacity:.55}.wordmark{letter-spacing:-1px;font-weight:600}.wordmark>svg,.mobile-brand>svg{color:var(--accent)}.sidebar{padding-top:30px}.sidebar nav button{color:var(--secondary);border:1px solid #0000}.sidebar nav button.active{background:var(--accent-soft);color:var(--accent);border-color:#354b74;font-weight:500}.sidebar nav button:hover:not(.active){border-color:var(--line)}.workspace-label{margin-left:40px}.topbar{background:var(--paper)}.today-hero{border-color:#354b74;border-top:2px solid var(--accent-strong)}.today-hero h2{font-variant-numeric:tabular-nums}.today-hero h2 span,.today-hero p,.orbit-word{color:var(--secondary)}.pill{border:1px solid #3b4c67}.loop-ring{opacity:.8;border-color:#5674a5}.orbit-center{color:var(--accent);border:1px solid #5674a5}.orbit-word{background:var(--hero);border-color:#3b4c67}.material-card:hover{box-shadow:none;border-color:var(--accent);transform:none}.material-cover{border-bottom:1px solid var(--line)}.material-card:nth-child(3n+2) .material-cover{background:#202733}.material-card:nth-child(3n+3) .material-cover{background:#25282c}.material-cover>svg{color:var(--accent)}input,textarea,select{border-color:var(--line-strong)}input::placeholder,textarea::placeholder{color:var(--muted);opacity:1}.segment:target{outline:1px solid var(--accent);outline-offset:-1px}.segment-number,.step-number{font-family:Consolas,Cascadia Mono,monospace}.segment-actions button{min-height:40px}.collection-tabs>button{min-height:44px}.collection-tabs>button.selected{color:var(--accent);border-color:var(--accent-strong)}.agent-preview{background:var(--hero);border-color:#3b4c67}.agent-question{background:var(--soft);border-left:2px solid var(--accent-strong)}.agent-citations blockquote{background:var(--input);border-left-color:var(--accent-strong)}.agent-citations a,.retrieval-results a{color:var(--accent);text-underline-offset:4px;text-decoration:underline}.agent-job .fine{color:var(--secondary)}.modal,.auth-card{background:var(--panel);border-color:var(--line-strong)}.auth-card{box-shadow:none;border-top:2px solid var(--accent-strong)}.auth-story h1{font-weight:450}.modal-close{width:44px;height:44px;top:14px;right:14px}.auth-links button,.back{min-height:44px}textarea:focus,input:focus,select:focus{border-color:var(--accent)}@media (max-width:600px){.sidebar{background:#18191bf5;padding-top:3px}.sidebar nav button{border:0;font-size:11px}.sidebar nav button.active{background:0 0}.sidebar nav button.active:before{background:var(--accent-strong)}.sidebar nav button:hover:not(.active){border:0}.page-heading .button{width:44px;min-height:44px}.today-hero .button,.start-card .button,.segment-actions button{min-height:44px}.page-heading p,.fine,.source-note,.material-toolbar,.toggle,.translation,.quiet-note{font-size:12px}.privacy-label{font-size:11px}.today-hero p{font-size:12px}.today-hero{padding:22px}.material-cover>i{font-size:10px}input,textarea,select{font-size:16px}.auth-story h1{font-size:30px}.auth-card{padding:26px 22px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important}.spin{animation-duration:2.5s}}.material-card{flex-direction:column;align-items:stretch;display:flex}.material-cover{flex-shrink:0}.material-card-body{flex-direction:column;flex:1;display:flex}.material-card-body>div{margin-top:auto}@media (max-width:600px){html{scroll-padding-bottom:calc(88px + env(safe-area-inset-bottom))}.agent-panel [role=alert]{scroll-margin-bottom:calc(96px + env(safe-area-inset-bottom))}}.learning-home{flex-direction:column;gap:24px;margin-bottom:32px;display:flex}.device-focus{border:1px solid var(--line);background:var(--panel);padding:24px}.device-focus h2{margin:8px 0 12px}.device-focus p{color:var(--muted);line-height:1.65}.device-focus-actions{flex-wrap:wrap;gap:12px;margin-top:20px;display:flex}.mobile-learning-focus,.mobile-learning-copy{display:none}.desktop-review-focus{justify-content:space-between;align-items:center;gap:24px;display:flex}.desktop-review-focus .device-focus-actions{flex-shrink:0;margin:0}.device-focus .device-sync-note{border-top:1px solid var(--line);align-items:flex-start;gap:8px;margin:22px 0 0;padding-top:16px;font-size:12px;display:flex}.device-sync-note svg{flex-shrink:0;margin-top:3px}.daily-learning-plan{order:2}.learning-history{order:1;scroll-margin-top:24px}.learning-history-heading{justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px;display:flex}.learning-history-heading h2{margin:0 0 6px}.learning-history-heading p{color:var(--muted);margin:0;font-size:13px}.practice-history-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:0;padding:0;list-style:none;display:grid}.practice-history-list li{border:1px solid var(--line);background:var(--panel);flex-direction:column;min-width:0;padding:20px;display:flex}.practice-history-list h3{overflow-wrap:anywhere;margin:16px 0 8px;font-size:17px;line-height:1.6}.history-mode{justify-content:space-between;align-items:center;gap:12px;display:flex}.history-mode time,.history-row-bottom>span{color:var(--muted);font-size:12px}.history-source{color:var(--muted);overflow-wrap:anywhere;margin:0 0 18px;font-size:12px;line-height:1.6}.history-row-bottom{justify-content:space-between;align-items:center;gap:12px;margin-top:auto;display:flex}.history-footer{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-top:16px;display:flex}.history-empty{border:1px dashed var(--line);background:var(--panel);padding:24px}.history-empty p{color:var(--muted);line-height:1.6}.continue-learning{min-height:48px;color:var(--accent);border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;margin-top:16px;padding-top:10px;font-size:14px;display:flex}@media (max-width:1150px){.desktop-review-focus{display:block}.desktop-review-focus .device-focus-actions{margin-top:20px}}@media (max-width:820px),(pointer:coarse) and (max-width:1000px) and (max-height:600px){.desktop-review-focus,.desktop-review-copy{display:none}.mobile-learning-focus{display:block}.mobile-learning-copy{display:inline}.daily-learning-plan{order:1}.learning-history{order:2}.device-focus{padding:20px}.device-focus h2{font-size:23px}.learning-home .button{min-height:46px}.device-focus-actions{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.device-focus-actions .button{padding:10px 8px;font-size:14px}.practice-history-list{grid-template-columns:1fr}.learning-history-heading{align-items:flex-start}.learning-history-heading .button{flex-shrink:0}.learning-history-heading p{line-height:1.6}.practice-history-list li{padding:18px}.learning-home{gap:20px}input:not([type=checkbox]):not([type=radio]):not([type=range]),select,textarea{font-size:16px}}@media (max-width:360px){.device-focus-actions{grid-template-columns:1fr}.history-row-bottom{flex-wrap:wrap}}.device-focus-actions{margin-top:0}.device-focus{padding:20px}.desktop-review-focus{display:block}.desktop-review-focus .device-focus-actions{margin-top:0}.plan-overview{justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px;display:flex}.plan-overview h2{margin:0 0 8px;font-size:22px}.plan-overview p{color:var(--muted);margin:0;font-size:13px}.plan-overview .button{flex-shrink:0}.plan-condition{color:var(--muted);margin:12px 0;font-size:12px;line-height:1.65}.plan-condition summary{cursor:pointer;min-height:28px}.plan-condition p{margin:6px 0 12px}@media (max-width:820px),(pointer:coarse) and (max-width:1000px) and (max-height:600px){.desktop-review-focus{display:none}.device-focus{padding:16px}.plan-overview h2{font-size:20px}.plan-overview .button{padding:10px 12px;font-size:13px}.plan-condition summary{align-items:center;gap:8px;min-height:44px;display:flex}.plan-condition summary:before{content:"›";font-size:17px}.plan-condition[open] summary:before{content:"⌄"}.page-heading{margin-bottom:20px}}@media (max-width:360px){.plan-overview{flex-wrap:wrap}}.page-heading h1{margin:0}.page-heading h1+p{margin-top:8px}.page-heading .button{margin-top:0}.sidebar>.wordmark{margin-bottom:24px}.test-setup{background:var(--panel);border:1px solid var(--line);max-width:680px;padding:24px}.test-setup label{gap:10px;margin-bottom:20px;display:grid}.test-setup select{width:100%;min-width:0}.optional-tools{border-top:1px solid var(--line);margin-top:20px}.optional-tools>summary{cursor:pointer;min-height:48px;color:var(--secondary);align-items:center;gap:10px;font-size:14px;display:flex}.optional-tools>summary:before{content:"›";font-size:18px}.optional-tools[open]>summary:before{content:"⌄"}.auth-page{flex-direction:column;justify-content:center;align-items:center;gap:28px;min-height:100dvh;padding:32px 20px;display:flex}.auth-story{background:0 0;width:auto;padding:0}.auth-story .wordmark{margin:0}.auth-card{width:min(100%,440px);margin:0}.material-cover{height:58px;min-height:58px}@media (max-width:600px){.sidebar nav{grid-template-columns:repeat(3,1fr)}.test-setup{padding:18px}.auth-card{padding:24px}}.unit-list-toolbar,.unit-reader-heading,.unit-list-head,.unit-list-bottom,.unit-step-actions{justify-content:space-between;align-items:center;gap:12px;display:flex}.unit-list-toolbar{margin:16px 0}.unit-list-toolbar .fine{overflow-wrap:anywhere}.unit-list-toolbar .button{flex-shrink:0}.unit-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.unit-list-item{border:1px solid var(--line);background:var(--surface);text-align:left;width:100%;min-width:0;color:var(--text);padding:20px;transition:border-color .15s}.unit-list-item:hover,.unit-list-item:focus-visible{border-color:var(--accent)}.unit-list-head{color:var(--muted);align-items:flex-start;font-size:12px}.unit-list-head>span:first-child{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.unit-list-head>span:last-child{flex-shrink:0}.unit-list-item h3{overflow-wrap:anywhere;margin:20px 0 24px;font-size:20px;font-weight:500;line-height:1.5}.unit-list-bottom{color:var(--muted)}.unit-list-bottom svg{color:var(--accent)}.unit-reader,.calendar-card{max-width:780px;margin:0 auto}.unit-reader-heading{margin:22px 0 10px}.unit-reader-heading h2{margin:0;font-size:21px}.unit-reader-heading>span{color:var(--muted);font-size:13px}.unit-source{text-align:left;color:var(--muted);overflow-wrap:anywhere;min-height:44px;margin-bottom:12px;font-size:13px;line-height:1.5;display:block}.unit-sentence,.calendar-card{border:1px solid var(--line);background:var(--surface);padding:26px}.unit-sentence{margin:20px 0}.unit-sentence>p:first-child{overflow-wrap:anywhere;font-size:26px;line-height:1.65}.unit-translation{color:var(--muted);margin:20px 0;font-size:17px;line-height:1.8}.unit-sentence-controls,.unit-practice-actions,.unit-completion,.recall-actions{flex-wrap:wrap;gap:10px;margin-top:20px;display:flex}.unit-practice-actions{border-top:1px solid var(--line);padding-top:20px}.unit-completion{justify-content:flex-end;margin:28px 0}.unit-step-actions{margin-top:22px}.unit-step-actions .button{min-height:44px}.learning-library+.optional-tools{margin-top:32px}.calendar-periods{border-bottom:1px solid var(--line);grid-template-columns:repeat(3,1fr);display:grid}.calendar-periods button{min-height:48px;color:var(--muted);border-bottom:2px solid #0000}.calendar-periods button.selected{color:var(--accent);border-bottom-color:var(--accent)}.calendar-card>.unit-reader-heading{margin-top:0}.recall-instruction{margin:22px 0 14px;font-size:15px;line-height:1.7}.recall-prompts{margin-bottom:24px;font-size:20px;line-height:1.9}.recall-prompts p+p{margin-top:12px}.recall-answer{color:var(--muted);font-size:13px;display:block}.recall-answer textarea{resize:vertical;width:100%;min-height:120px;margin-top:8px;font-size:17px;line-height:1.6;display:block}.recall-spoken{align-items:center;gap:10px;min-height:48px;margin:10px 0;font-size:14px;display:flex}.recall-spoken input{width:20px;height:20px;accent-color:var(--accent)}.recall-reference{border-left:2px solid var(--accent);overflow-wrap:anywhere;margin:24px 0;padding:4px 0 4px 18px;font-size:20px;line-height:1.8}.recall-reference p+p{margin-top:16px}.recall-ratings{grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;display:grid}.recall-ratings .button{min-height:48px;padding:10px 8px}.recall-saved{flex-wrap:wrap;align-items:center;gap:12px;padding:30px 0;display:flex}.recall-saved .button{margin-left:auto}@media (max-width:600px){.unit-list{grid-template-columns:minmax(0,1fr)}.unit-list-item,.unit-sentence,.calendar-card{padding:18px}.unit-sentence>p:first-child{font-size:23px}.unit-sentence-controls .button,.unit-practice-actions .button{white-space:normal;flex:1}.unit-completion .button{flex:1}.recall-ratings{grid-template-columns:repeat(2,minmax(0,1fr))}.recall-prompts{font-size:18px}.unit-list-toolbar .fine{font-size:11px}}.collection-tabs{scrollbar-width:thin;gap:4px;overflow-x:auto}.collection-tabs>button{white-space:nowrap;flex:none}@media (max-width:600px){.collection-tabs>button{gap:6px;padding:12px 10px}}.oral-recall{border-bottom:1px solid var(--line);margin-bottom:20px;padding:16px 0}.oral-prompt{margin:20px 0;font-size:20px;line-height:1.7}.expression-score{border:1px solid var(--line);margin:20px 0;padding:18px}.expression-score h4{justify-content:space-between;gap:12px;display:flex}.expression-score strong{color:var(--text);font-size:24px}.expression-score summary{cursor:pointer;align-items:center;min-height:44px;display:flex}.knowledge-save-actions{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.knowledge-save-actions button{min-height:44px}.saved-knowledge-card{background:#202734;border-left:2px solid #87a7ed;margin-top:12px;padding:14px}.saved-knowledge-card p{overflow-wrap:anywhere}.feedback-knowledge{margin-bottom:18px}.manual-recall>summary{cursor:pointer;min-height:44px;color:var(--muted);align-items:center;font-size:14px;display:flex}.manual-recall[open]>summary{margin-bottom:12px}.map-open{color:var(--text);border:1px solid var(--line);background:0 0;align-items:center;gap:6px;min-height:44px;padding:8px;display:flex}.lexical-collection{border:1px solid var(--line);margin:24px 0;padding:20px}.lexical-collection h3{margin:0 0 16px}.lexical-confirm{align-items:center;gap:10px;margin-bottom:16px;display:flex}.lexical-confirm input{width:20px;height:20px}.knowledge-dialog{border:1px solid var(--line);background:var(--paper);width:min(1400px,100vw - 48px);max-width:none;height:calc(100dvh - 48px);max-height:none;color:var(--text);overscroll-behavior:contain;margin:auto;padding:24px;position:fixed;inset:0;overflow:auto}.knowledge-dialog::backdrop{background:#000b}.knowledge-header{justify-content:space-between;align-items:center;gap:20px;margin-bottom:20px;display:flex}.knowledge-header h1{margin:0;font-size:26px}.knowledge-header button{min-width:44px;min-height:44px;color:inherit;border:1px solid var(--line);background:0 0}.knowledge-tabs{border-bottom:1px solid var(--line);gap:12px;margin-bottom:20px;display:flex}.knowledge-tabs button{min-height:44px;color:var(--muted);background:0 0;border:0;border-bottom:2px solid #0000;padding:12px 8px;font-size:15px}.knowledge-tabs button[aria-selected=true]{color:var(--accent-strong);border-color:var(--accent-strong)}.knowledge-tools{flex-wrap:wrap;align-items:center;gap:16px;margin:0 0 16px;display:flex}.knowledge-switch{gap:6px;display:flex}.knowledge-tools button,.knowledge-pagination button,.knowledge-zoom button,.knowledge-related button{background:var(--surface);color:inherit;border:1px solid var(--line);min-height:44px;padding:8px 14px}.knowledge-switch button[aria-pressed=true]{border-color:var(--accent-strong);color:var(--accent-strong)}.knowledge-tools form{flex:1;gap:8px;min-width:0;display:flex}.knowledge-tools input{flex:1;width:140px;min-width:60px;margin:0}.knowledge-tools select{max-width:100px}.knowledge-body{grid-template-columns:minmax(0,1fr);gap:24px;display:grid}.knowledge-body.has-detail{grid-template-columns:minmax(0,1.5fr) minmax(300px,1fr)}.knowledge-main,.knowledge-detail{min-width:0}.knowledge-detail{border-left:1px solid var(--line);overflow-wrap:anywhere;padding-left:24px}.knowledge-detail h2{margin:0 0 12px;font-size:24px;line-height:1.4}.knowledge-detail h3{margin:24px 0 10px;font-size:16px}.knowledge-detail p{line-height:1.8}.knowledge-detail a,.knowledge-detail .text-link{color:var(--accent-strong)}.knowledge-related{flex-wrap:wrap;gap:8px;display:flex}.knowledge-zoom{align-items:center;gap:10px;margin-bottom:12px;display:flex}.knowledge-zoom output{text-align:center;min-width:44px;color:var(--muted);font-size:13px}.knowledge-zoom .reset{margin-left:auto}.knowledge-viewport{touch-action:none;border:1px solid var(--line);background-image:radial-gradient(var(--line) 1px,transparent 1px);cursor:grab;-webkit-user-select:none;user-select:none;overscroll-behavior:contain;background-size:24px 24px;width:100%;height:480px;position:relative;overflow:hidden}.knowledge-viewport:active{cursor:grabbing}.knowledge-world{transform-origin:0 0;position:absolute;top:0;left:0}.knowledge-lines{pointer-events:none;position:absolute;inset:0;overflow:visible}.knowledge-lines path{stroke:var(--muted);fill:none;stroke-width:1px}.knowledge-lines rect{fill:var(--paper)}.knowledge-lines text{fill:var(--muted);font-size:12px}.knowledge-sentence-label{white-space:nowrap;text-overflow:ellipsis;color:var(--muted);pointer-events:none;font-size:13px;line-height:26px;position:absolute;left:0;overflow:hidden}.knowledge-node{text-align:left;white-space:normal;background:var(--knowledge-card);color:var(--text);cursor:pointer;border:1px solid #59677e;border-radius:0;flex-direction:column;justify-content:center;align-items:flex-start;gap:10px;padding:16px;display:flex;position:absolute;overflow:hidden}.knowledge-node.selected{outline:2px solid var(--accent-strong);outline-offset:2px}.knowledge-node strong{overflow-wrap:anywhere;-webkit-line-clamp:3;-webkit-box-orient:vertical;font-size:18px;font-weight:500;line-height:1.35;display:-webkit-box;overflow:hidden}.knowledge-node small{color:var(--muted);font-size:12px}.knowledge-node.note{background:#292637;border-color:#6d6680}.knowledge-node.note strong{-webkit-line-clamp:2}.knowledge-pagination{justify-content:center;align-items:center;gap:16px;margin-top:16px;display:flex}.knowledge-empty{color:var(--muted);padding:40px 12px;line-height:1.8}.lexical-list{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;display:grid}.lexical-list button{text-align:left;border:1px solid var(--line);background:var(--surface);min-height:90px;color:var(--text);overflow-wrap:anywhere;flex-direction:column;align-items:flex-start;gap:12px;padding:16px;display:flex}.lexical-list button.selected{border-color:var(--accent-strong)}.lexical-list small{color:var(--muted);font-size:12px}.lexical-detail-heading{flex-wrap:wrap;align-items:baseline;gap:16px;display:flex}.lexical-detail-heading span{color:var(--muted);font-size:12px}.lexical-meta{color:var(--muted);flex-wrap:wrap;gap:12px;margin:12px 0;font-size:12px;display:flex}.lexical-meaning{font-size:14px}.frequency-source{margin:16px 0;font-size:12px}.frequency-source p{margin:8px 0}.lexical-source{border-top:1px solid var(--line);padding:16px 0}.lexical-source blockquote{white-space:pre-wrap;margin:0 0 12px;font-size:18px;line-height:1.8}.lexical-source mark{color:#fff;background:#394f86;padding:1px 0}.lexical-source a{font-size:13px}.lexical-source small{color:var(--muted);margin-top:10px;display:block}@media (max-width:1000px){.knowledge-body.has-detail{grid-template-columns:minmax(0,1fr)}.knowledge-detail{border-left:0;border-top:1px solid var(--line);padding:24px 0 0}.knowledge-viewport{height:360px}}@media (max-width:600px){.knowledge-dialog{width:100vw;height:100dvh;padding:16px 14px calc(20px + env(safe-area-inset-bottom));border:0}.knowledge-header{margin-bottom:12px}.knowledge-header h1{font-size:22px}.knowledge-tabs{justify-content:space-between;gap:0}.knowledge-tabs button{font-size:14px}.knowledge-viewport{height:330px}.knowledge-tools{gap:12px}.knowledge-tools form{flex-basis:100%;gap:6px}.knowledge-tools button{padding:8px 10px}.map-open span{display:none}.map-open{border:0}.topbar-actions{gap:6px}.knowledge-detail h2{font-size:22px}}.saved-word-explanations{border-top:1px solid var(--line);margin-top:24px;padding-top:16px}.saved-word-explanations h3{margin:0 0 16px;font-size:15px}.dictionary-entry{border-top:1px solid var(--line);overflow-wrap:anywhere;min-width:0;margin-top:20px;padding-top:20px}.dictionary-pronunciation{flex-wrap:wrap;align-items:center;gap:10px;font-size:19px;display:flex}.dictionary-pronunciation small{color:var(--muted);font-size:12px}.dictionary-pronunciation .button{min-height:44px;padding:8px 12px}.dictionary-entry audio{width:100%;margin:12px 0}.dictionary-article{border-top:1px solid var(--line);margin-top:18px;padding-top:14px}.dictionary-article-title{justify-content:space-between;align-items:center;gap:10px;display:flex}.dictionary-article-title h3{margin:0}.dictionary-article-title>span,.dictionary-meaning{color:var(--muted);font-size:13px;line-height:1.6}.dictionary-senses{margin:12px 0;padding-left:24px}.dictionary-senses>li{border-bottom:1px solid var(--line);padding:9px 0}.dictionary-senses summary{cursor:pointer;min-height:44px;padding:5px 0;line-height:1.6}.dictionary-meaning{margin-top:5px;display:block}.dictionary-use{color:var(--muted);font-size:13px}.dictionary-examples blockquote{border-left:2px solid var(--accent);margin:12px 0;padding:0 0 0 12px}.dictionary-examples p{margin:4px 0;line-height:1.65}.dictionary-relations{flex-wrap:wrap;align-items:center;gap:7px;margin:10px 0;display:flex}.dictionary-relations>span{color:var(--muted);font-size:12px}.dictionary-tag{border:1px solid var(--line);color:var(--accent);font:inherit;cursor:pointer;overflow-wrap:anywhere;background:0 0;max-width:100%;min-height:44px;padding:7px 10px}.dictionary-attribution{color:var(--muted);margin:12px 0;font-size:12px;line-height:1.6}.dictionary-attribution summary{cursor:pointer;min-height:36px;padding:6px 0}.dictionary-attribution p{margin:6px 0}.dictionary-attribution a{color:var(--accent)}.dictionary-return{margin-bottom:16px}.dictionary-return h3{margin-bottom:8px;font-size:22px}.dictionary-arpabet{overflow-wrap:anywhere;font-family:monospace}.transfer-modes,.transfer-actions,.transfer-history{flex-wrap:wrap;gap:10px;margin:16px 0;display:flex}.transfer-preview{border:1px solid var(--line);background:var(--panel);overflow-wrap:anywhere;margin:20px 0;padding:22px}.transfer-preview h2{font-size:23px;font-weight:600;line-height:1.6}.transfer-context{white-space:pre-wrap;border-left:2px solid var(--accent);margin:20px 0;padding-left:16px;font-size:19px;line-height:1.9}.transfer-source{color:var(--secondary);margin-top:20px;font-size:14px}.transfer-source summary{cursor:pointer;min-height:44px;padding:10px 0}.transfer-source blockquote{border-left:1px solid var(--line);margin:12px 0;padding-left:12px}.transfer-source a{color:var(--accent)}@media (max-width:520px){.transfer-preview{padding:16px}.transfer-modes .button{flex:1;padding:10px 8px}.transfer-preview h2{font-size:21px}}.transfer-history .button{text-align:left;white-space:normal;flex-direction:column;align-items:flex-start}.transfer-history .button small{color:var(--muted);font-size:12px;font-weight:400}.transfer-history .button span{overflow-wrap:anywhere}.brand-settings{color:var(--text);cursor:pointer;text-align:left;background:0 0;border:0;padding:0}.sidebar nav button.ai-nav{background:var(--accent-strong);color:#fff;border-color:#0000;min-height:56px}.sidebar nav button:disabled{opacity:.5;cursor:default}.workspace-dialog{background:var(--paper);width:min(780px,100vw - 40px);max-width:none;height:calc(100dvh - 48px);max-height:none;color:var(--text);border:1px solid var(--line);overscroll-behavior:contain;margin:auto;padding:0 24px 24px;scroll-padding-top:90px;position:fixed;inset:0;overflow:auto}.workspace-dialog::backdrop{background:#000b}.workspace-dialog-header{z-index:3;background:var(--paper);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;margin-bottom:18px;padding-top:24px;padding-bottom:12px;display:flex;position:sticky;top:0}.workspace-dialog-header h1{margin:0;font-size:26px}.workspace-dialog-header button{min-width:44px;min-height:44px;color:inherit;border:1px solid var(--line);background:0 0}.workspace-ai textarea{resize:vertical;width:100%;min-height:100px}.ai-submit-row{justify-content:space-between;align-items:center;gap:12px;margin:10px 0 24px;display:flex}.ai-submit-row .button{min-width:48px;min-height:48px;padding:10px}.ai-result{border-top:1px solid var(--line);overflow-wrap:anywhere;padding-top:22px}.ai-result h2{margin:0 0 12px;font-size:22px;line-height:1.6}.ai-answer,.ai-lesson p{white-space:pre-wrap;line-height:1.85}.ai-lessons article,.ai-lesson{border:1px solid var(--line);margin:18px 0;padding:20px}.ai-lessons h3,.ai-lesson h3{margin:0 0 12px;font-size:19px}.ai-lessons p{line-height:1.8}.ai-example{border-left:2px solid var(--accent);margin:18px 0;padding-left:16px}.ai-example p{margin:6px 0}.ai-history{flex-direction:column;display:flex}.ai-history button,.asset-materials button{text-align:left;color:inherit;border:0;border-bottom:1px solid var(--line);background:0 0;flex-direction:column;gap:8px;padding:18px 0;display:flex}.ai-history small,.asset-materials small{color:var(--secondary)}.workspace-ai a,.ai-lesson a{color:var(--accent-strong)}.asset-search{gap:8px;margin:16px 0;display:flex}.asset-search input{flex:1;min-width:0}.asset-search .button{flex-shrink:0;padding:10px 14px}.asset-word-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px;margin:20px 0;display:grid}.asset-word-grid button{border:1px solid var(--line);background:var(--panel);color:inherit;text-align:left;overflow-wrap:anywhere;flex-direction:column;gap:12px;padding:20px 14px;display:flex}.asset-word-grid strong{font-size:20px;font-weight:500}.asset-word-grid small{color:var(--secondary)}.asset-sentences article{border-bottom:1px solid var(--line);padding:22px 0}.asset-sentences p{margin:8px 0;line-height:1.8}.asset-sentences p[lang]{font-size:21px}.asset-materials{flex-direction:column;display:flex}.asset-materials strong{font-size:20px;font-weight:500}@media (max-width:820px){.sidebar nav{gap:0;grid-template-columns:repeat(5,minmax(44px,1fr)) 60px!important}.sidebar nav button{min-width:44px;padding:8px 0}.sidebar nav button.ai-nav{background:var(--accent-strong);color:#fff;min-width:56px;min-height:56px;max-height:56px;margin:2px}.sidebar nav button.ai-nav:before{display:none}.sidebar nav button span{font-size:11px}.mobile-brand.brand-settings{align-items:center;gap:7px;font-size:20px;font-weight:600;display:flex}.topbar .mobile-account,.privacy-label{display:none}.workspace-dialog{width:100vw;height:100dvh;padding:0 14px calc(20px + env(safe-area-inset-bottom));border:0}.workspace-dialog-header{padding-top:18px}.workspace-dialog-header h1{font-size:23px}.ai-lessons article,.ai-lesson{padding:16px}.ai-result h2{font-size:20px}}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (max-width:820px){.sidebar nav{grid-template-columns:repeat(5,minmax(44px,1fr)) minmax(60px,1.25fr)!important}.sidebar nav button.ai-nav{min-height:60px;max-height:none;margin:0 2px}.sidebar nav button:not(.ai-nav){padding-top:10px;padding-bottom:8px}}.semantic-detail{overflow-wrap:anywhere;line-height:1.7}.semantic-detail h3{margin-top:1.4rem}.semantic-detail ul{padding-left:1.3rem}.semantic-example{border-left:2px solid var(--line);margin:.7rem 0;padding:.5rem .8rem}.semantic-example.incorrect{border-left-color:#c98e8e}.semantic-example p{margin:.3rem 0}.semantic-exercise textarea{width:100%;min-height:90px;margin:.7rem 0}.semantic-detail details,.concept-catalog{margin-top:1.2rem}.knowledge-related button small{opacity:.7;margin-top:.25rem;display:block}.semantic-network,.concept-topics{margin-bottom:1.5rem}@media (max-width:1000px){.knowledge-body.has-detail .knowledge-detail{border-top:0;border-bottom:1px solid var(--line);order:-1;padding:0 0 24px}.knowledge-header .text-link{max-width:110px;font-size:13px}}.semantic-network .knowledge-viewport{height:540px}@media (max-width:1000px){.semantic-network .knowledge-viewport{height:360px}}.recommendations{border-top:1px solid var(--border);border-bottom:1px solid var(--border);margin:24px 0;padding:18px 0}.recommendation-heading{justify-content:space-between;align-items:center;gap:12px;display:flex}.recommendation-heading h3{margin:0}.recommendation-source{gap:8px;margin:12px 0;display:grid}.recommendation-source select{width:100%;min-width:0;max-width:100%}.recommendations .knowledge-viewport{height:300px;min-height:240px}.recommendation-parent{border:1px solid var(--border);background:var(--surface);overflow-wrap:anywhere;justify-content:center;align-items:center;padding:14px;display:flex;position:absolute}.recommendation-lines path{stroke-dasharray:7 6}.recommendation-node{border:1px dashed var(--accent);background:var(--surface);flex-direction:column;display:flex;position:absolute}.recommendation-node.accepted{border-style:solid}.recommendation-decisions{justify-content:flex-end;align-items:center;height:44px;display:flex}.recommendation-decisions button{width:44px;height:44px;color:var(--text);cursor:pointer;background:0 0;border:0;place-items:center;display:grid}.recommendation-decisions button:hover{background:var(--soft)}.recommendation-decisions span{color:var(--muted);padding:8px 14px;font-size:13px}.recommendation-open{text-align:left;width:100%;color:var(--text);cursor:pointer;background:0 0;border:0;flex:1;gap:5px;padding:6px 14px 14px;display:grid}.recommendation-open strong{overflow-wrap:anywhere;font-size:18px}.recommendation-open small{color:var(--muted);font-size:13px}.recommendation-detail{border:1px dashed var(--border);margin-top:18px;padding:16px;scroll-margin-top:16px}.recommendation-detail p{white-space:pre-line;overflow-wrap:anywhere}.recommendation-detail h4{margin:18px 0 8px}.recommendation-usage{border-bottom:1px solid var(--border);padding:0 0 12px}.recommendation-detail .fine{margin-top:18px;display:block}.recommendations button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}@media (max-width:600px){.recommendations{padding:14px 0}.recommendation-detail{padding:12px}.recommendation-heading{flex-wrap:wrap}}.recommendation-accessible-list{gap:10px;margin-top:14px;display:grid}.recommendation-accessible-list>div{border:1px dashed var(--accent);align-items:center;display:flex}.recommendation-accessible-list .recommendation-open{min-height:70px;padding:12px}.recommendation-accessible-list .recommendation-decisions{flex-shrink:0}.recommendation-open{min-width:0;min-height:0}.recommendation-open strong{-webkit-line-clamp:2;-webkit-box-orient:vertical;line-height:1.3;display:-webkit-box;overflow:hidden}.recommendation-open small{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.recommendation-accessible-list .recommendation-open{min-height:70px}.focus-reason,.focus-evidence-list{border:1px solid var(--line);margin:16px 0;padding:12px}.focus-reason summary,.focus-evidence-list summary{cursor:pointer;min-height:44px;color:var(--accent);align-items:center;display:flex}.focus-evidence-record{border-top:1px solid var(--line);overflow-wrap:anywhere;padding:16px 0}.focus-evidence-record p,.focus-reason p{margin:10px 0;line-height:1.65}.knowledge-tools>select{min-height:44px;font:inherit}.knowledge-node-meaning{text-overflow:ellipsis;white-space:nowrap;max-width:100%;font-size:12px;line-height:1.4;overflow:hidden}.lexical-source.selected-source{border-left:2px solid var(--accent);padding-left:14px}.knowledge-dialog .knowledge-header{z-index:8;background:var(--surface);padding-bottom:12px;position:sticky;top:0}.knowledge-detail{scroll-margin-top:84px}.main-recommendation-edge path{stroke-dasharray:7 6}.main-recommendation-edge.confirmed path{stroke-dasharray:none}.main-recommendation-edge text{font-size:12px}.recommendation-node.accessible-recommendation{flex-direction:column;width:100%;min-height:100px;display:flex;position:relative}.recommendation-accessible-list>.accessible-recommendation.accepted{border-style:solid}.recommendation-node.accepted .recommendation-open{border-top:1px solid var(--border)}.knowledge-dialog .knowledge-header{margin-top:-24px;padding-top:24px;top:-24px}@media (max-width:600px){.knowledge-dialog .knowledge-header{margin-top:-16px;padding-top:16px;top:-16px}}.recommendation-detail-actions{flex-wrap:wrap;align-items:center;gap:8px;margin:12px 0;display:flex}.recommendation-detail-actions>a,.recommendation-detail-actions>button{justify-content:center;align-items:center;min-height:44px;padding:8px 10px;display:inline-flex}.dictionary-chinese-definition{margin-top:0;font-size:13px}.synthetic-confirm{border:1px solid var(--line);margin:12px 0;padding:14px}.synthetic-confirm p{margin:0 0 12px;line-height:1.6}.synthetic-confirm>div{flex-wrap:wrap;gap:10px;display:flex}.synthetic-confirm button{min-height:44px}:root{--network-words:#8ab0ff;--network-grammar:#c2aff4;--network-sounds:#84c8b7}.knowledge-dialog.map-workspace{border:0;flex-direction:column;gap:10px;width:100vw;max-width:none;height:100dvh;max-height:none;margin:0;padding:16px 20px;display:flex;inset:0;overflow:hidden}.map-workspace .knowledge-header{background:0 0;flex-shrink:0;margin:0;padding:0;position:relative;top:0}.map-workspace .knowledge-header h1{font-size:20px}.map-workspace .knowledge-tabs{flex-shrink:0;margin:0}.map-workspace .knowledge-tabs button{min-width:64px;min-height:44px}.map-workspace .knowledge-tools{flex-shrink:0;margin:0}.map-workspace .knowledge-body,.map-workspace .knowledge-body.has-detail{flex:1;min-height:0;display:block;position:relative}.map-workspace .knowledge-main{height:100%;overflow:auto}.map-workspace .knowledge-canvas{flex-direction:column;height:100%;display:flex}.map-workspace .knowledge-viewport,.map-workspace .semantic-network .knowledge-viewport{border:0;flex:1;height:auto;min-height:200px}.map-workspace .overview-network,.map-workspace .semantic-network{flex-direction:column;height:100%;min-height:0;display:flex}.map-workspace .overview-network .knowledge-canvas,.map-workspace .semantic-network .knowledge-canvas{flex:1;min-height:0}.map-workspace .knowledge-zoom{margin:0 0 8px}.map-workspace .knowledge-node{text-align:left;padding:16px}.map-workspace .knowledge-node strong{font-size:20px}.map-workspace .knowledge-node small{font-size:12px;line-height:1.5}.map-workspace .network-words{border-left:3px solid var(--network-words)}.map-workspace .network-grammar{border-left:3px solid var(--network-grammar)}.map-workspace .network-sounds{border-left:3px solid var(--network-sounds)}.map-workspace .knowledge-detail.node-popover{z-index:12;background:var(--panel);border:1px solid var(--border);width:min(380px,42vw);max-height:calc(100% - 136px);padding:16px;position:absolute;top:120px;right:16px;overflow:auto;box-shadow:0 12px 40px #0006}.node-popover-toolbar{z-index:2;background:var(--panel);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:8px;margin-bottom:16px;padding:8px 0;display:flex;position:sticky;top:-16px}.node-popover-toolbar button{color:var(--accent-strong);background:0 0;border:0;min-height:44px}.map-workspace .knowledge-detail.detail-window{z-index:15;background:var(--paper);border:0;padding:20px max(20px,50vw - 440px);position:fixed;inset:0;overflow:auto}.detail-window .node-popover-toolbar{background:var(--paper);top:-20px}.node-popover .lexical-detail>.word-actions,.node-popover .lexical-detail>.frequency-source,.node-popover .lexical-detail>.focus-evidence,.node-popover .lexical-detail>.lexical-meta,.node-popover .lexical-detail>.dictionary-entry,.node-popover .lexical-detail>.lexical-source,.node-popover .lexical-detail>h3,.node-popover .lexical-detail>button,.node-popover .semantic-exercise,.node-popover .semantic-detail>details{display:none}.node-popover .recommendations{margin-top:12px;padding-top:12px}.node-popover .recommendation-accessible-list{gap:8px;display:grid}.node-popover h3{margin-top:16px}@media (max-width:700px){.knowledge-dialog.map-workspace{padding:10px 12px max(10px,env(safe-area-inset-bottom));gap:6px}.map-workspace .knowledge-detail.node-popover{width:auto;max-height:45%;padding:12px;inset:auto 8px 8px}.map-workspace .knowledge-detail.detail-window{padding:12px 16px}.map-workspace .knowledge-header h1{font-size:18px}.map-workspace .knowledge-tools{gap:8px}.node-popover-toolbar{top:-12px}.map-workspace .knowledge-main{padding-bottom:0}.map-workspace .knowledge-header .text-link{max-width:none}}.map-workspace .knowledge-tabs button:nth-child(2){color:var(--network-words)}.map-workspace .knowledge-tabs button:nth-child(3){color:var(--network-grammar)}.map-workspace .knowledge-tabs button:nth-child(4){color:var(--network-sounds)}.node-popover .lexical-detail>.focus-reason{display:none}.node-popover .accessible-recommendation{min-height:76px}.node-popover .recommendation-open{padding:8px 12px}.node-popover .recommendation-open strong{font-size:17px}.map-workspace .knowledge-main>.focus-evidence-list{display:none}.relationship-v3{position:relative}.relationship-toolbar{min-height:42px;color:var(--muted);flex-shrink:0;align-items:center;gap:12px;font-size:12px;display:flex}.relationship-toolbar button{border:1px solid var(--border);color:var(--text);background:var(--panel);min-height:36px;padding:4px 12px}.relationship-toolbar button[aria-pressed=true]{color:var(--accent-strong);border-color:var(--accent)}.map-workspace .relationship-node{flex-direction:column;padding:0;display:flex;overflow:visible}.relationship-node-open{width:100%;color:var(--text);text-align:left;background:0 0;border:0;flex-direction:column;flex:1;justify-content:center;gap:6px;min-height:50px;padding:14px 16px;display:flex}.relationship-node-open strong{line-height:1.35;font-size:19px!important}.relationship-node-open small{text-overflow:ellipsis;white-space:nowrap;max-width:100%;overflow:hidden}.relationship-badges{gap:8px;padding:0 12px 8px;display:flex}.relationship-badges button{border:1px solid var(--border);background:var(--paper);min-height:32px;padding:4px 8px;font-size:12px}.grammar-badge{color:var(--network-grammar)}.sound-badge{color:var(--network-sounds)}.hierarchy-group{background:var(--paper)!important;border-style:dashed!important}.hierarchy-group strong{font-weight:500;font-size:17px!important}.relationship-lines g>path{stroke:var(--line-strong,#555f72);stroke-width:1.3px;fill:none;vector-effect:non-scaling-stroke}.relationship-lines g.active>path:first-child{stroke:var(--accent)}.relationship-lines g.proposed>path:first-child{stroke-dasharray:6 5}.relationship-lines text{paint-order:stroke;stroke:var(--paper);stroke-width:8px;fill:var(--text);font-size:12px}.relationship-lines .relation-flow,.relationship-lines .relation-pulse{display:none}.flow-enabled .relationship-lines .relation-flow{stroke:var(--accent-strong);stroke-width:2.5px;stroke-dasharray:7 93;animation:3s linear infinite relationship-flow;display:block}.flow-enabled .relationship-lines .relation-pulse{stroke:var(--accent-strong);stroke-width:2px;animation:3s ease-in-out infinite relationship-pulse;display:block}@keyframes relationship-flow{to{stroke-dashoffset:-100px}}@keyframes relationship-pulse{0%,to{opacity:.15}50%{opacity:.8}}.relationship-peek{z-index:13;background:var(--panel);border:1px solid var(--border);width:310px;max-height:340px;padding:14px;position:absolute;overflow:auto;box-shadow:0 12px 35px #0006}.relationship-peek header{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.relationship-peek header button{color:var(--text);background:0 0;border:0;width:36px;height:36px;font-size:23px}.peek-layer{gap:6px;margin-bottom:8px;display:grid}.peek-layer>button{background:var(--paper);border:1px solid var(--border);color:var(--text);text-align:left;align-items:center;gap:10px;min-height:44px;padding:8px;font-size:13px;display:flex;position:relative}.peek-layer>button>span:first-child{color:var(--network-grammar);flex-shrink:0;font-size:11px}.peek-layer.sounds>button>span:first-child{color:var(--network-sounds)}.projection-flow{background:var(--border);width:100%;height:1px;position:absolute;bottom:0;left:0}.flow-enabled .projection-flow{background:linear-gradient(90deg,transparent 20%,var(--accent-strong),transparent 80%);background-size:200% 100%;animation:3s linear infinite projection-flow}@keyframes projection-flow{to{background-position:-200% 0}}@media (max-width:700px){.relationship-peek{width:auto;max-height:45dvh;position:fixed;bottom:12px;right:12px;top:auto!important;left:12px!important}.relationship-badges button{min-height:36px}.relationship-toolbar{min-height:38px}.map-workspace .relationship-node-open strong{font-size:18px!important}}@media (prefers-reduced-motion:reduce){.relationship-v3 .relation-flow,.relationship-v3 .relation-pulse,.relationship-v3 .projection-flow{animation:none!important}.relationship-v3 .relation-flow{opacity:.7;stroke-dasharray:none!important}}.flow-enabled .relationship-lines .relation-flow.reverse{opacity:.45;animation-direction:reverse}.relationship-cluster{flex-direction:column;display:flex;position:absolute;background:0 0!important;border:0!important}.map-workspace .relationship-cluster>.relationship-node-open{background:var(--knowledge-card);border:1px solid var(--border);border-left:3px solid var(--network-words);flex-direction:column;flex:none;justify-content:center;gap:8px;width:100%;padding:16px;display:flex;position:relative;inset:auto}.relationship-cluster.network-grammar>.relationship-node-open{border-left-color:var(--network-grammar)}.relationship-cluster.network-sounds>.relationship-node-open{border-left-color:var(--network-sounds)}.word-projections{grid-auto-rows:48px;gap:6px;margin-top:10px;display:grid}.knowledge-strip{text-align:left;background:var(--paper);border:1px solid var(--border);border-left:3px solid var(--network-grammar);width:100%;min-height:48px;color:var(--text);align-items:center;gap:8px;padding:6px 10px;display:flex;position:relative}.knowledge-strip.sounds{border-left-color:var(--network-sounds)}.knowledge-strip>span{color:var(--network-grammar);flex-shrink:0;font-size:10px}.knowledge-strip.sounds>span{color:var(--network-sounds)}.knowledge-strip>strong{-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:14px;font-weight:400;line-height:1.4;display:-webkit-box;overflow:hidden}.knowledge-strip:hover,.knowledge-strip:focus-visible{background:var(--panel);outline:1px solid var(--accent)}.flow-enabled .relationship-cluster.active .knowledge-strip:after{content:"";background:linear-gradient(90deg,transparent 20%,var(--accent-strong),transparent 80%);background-size:200% 100%;height:1px;animation:3s linear infinite projection-flow;position:absolute;bottom:0;left:0;right:0}@media (prefers-reduced-motion:reduce){.relationship-cluster.active .knowledge-strip:after{animation:none!important}}.relationship-lines .relation-label-gap{fill:var(--paper);stroke:none}.relationship-lines g.active>[data-relation-arm]{stroke:var(--accent)}.relationship-lines g.proposed>[data-relation-arm]{stroke-dasharray:6 5}.export-history-row{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;padding:16px 0;display:flex}.export-history-row>div:first-child{min-width:0}.export-history-row small{color:var(--muted);margin:6px 0;display:block}.export-history-row>div:last-child{flex-wrap:wrap;gap:8px;display:flex}.settings-card[aria-label=导出学习数据]>small{color:var(--muted);margin:12px 0;display:block}.settings-card[aria-label=导出学习数据] input[type=checkbox]{width:20px;min-height:20px;margin-right:8px}@media (max-width:600px){.export-history-row{flex-direction:column;align-items:flex-start}.export-history-row button{min-height:44px}}.settings-card .export-files-toggle{align-items:center;gap:8px;display:flex}.settings-card .export-files-toggle input[type=checkbox]{flex:none;margin:0}.export-history{margin-top:12px}.export-history>summary{cursor:pointer;min-height:44px;color:var(--muted);align-items:center;display:flex}.public-scenario{border-top:1px solid var(--line);margin-top:20px;padding-top:16px}.public-scenario>.fine{margin-top:12px}.public-scenario .scenario-reference{border-left:2px solid var(--accent);margin:16px 0;padding:12px}.word-dictionary-reference{overflow-wrap:anywhere;min-width:0;margin-block:1rem}.word-dictionary-reference[data-linked=true]{border-top:1px solid var(--border);padding-top:1rem}.word-dictionary-reference h3{margin:0 0 .75rem;font-size:1rem}.word-dictionary-reference .dictionary-entry{margin-top:1rem}.word-dictionary-reference blockquote{border-left:2px solid var(--border);margin-inline:0;padding-left:.75rem}.dictionary-speech{flex-wrap:wrap;align-items:center;gap:.5rem;margin:.45rem 0;display:flex}.dictionary-speech audio{width:18rem;max-width:100%;height:2.5rem;display:block}.dictionary-speech audio[hidden]{display:none}.dictionary-speech small{color:var(--muted);font-size:.8rem}.dictionary-speech-confirm{flex-wrap:wrap;align-items:center;gap:.6rem;font-size:.85rem;display:flex}.dictionary-speech>button,.dictionary-speech-confirm button{min-width:44px;min-height:44px;padding:0 .25rem}.dictionary-teaching{margin:8px 0}.dictionary-teaching .text-link,.dictionary-teaching summary{align-items:center;min-height:44px;display:flex}.dictionary-teaching summary{cursor:pointer}.dictionary-ai-example{border-left:1px solid var(--border);margin:8px 0;padding-left:12px}.dictionary-teaching summary{line-height:44px;display:list-item}.study-session .sidebar,.study-session .topbar,.study-session .dev-label{visibility:hidden;pointer-events:none}.study-workspace{z-index:60;inset:var(--study-top,0px) 0 auto;height:var(--study-height,100dvh);background:var(--paper);color:var(--text);isolation:isolate;flex-direction:column;display:flex;position:fixed;overflow:hidden}.study-header{border-bottom:1px solid var(--line);background:var(--paper);flex-shrink:0;align-items:center;gap:8px;min-height:64px;padding:8px max(14px,50vw - 460px);display:flex}.study-header>button{justify-content:center;align-items:center;gap:5px;min-width:44px;min-height:44px;padding:6px;display:inline-flex}.study-header>div{flex:1;min-width:0}.study-header h1{letter-spacing:0;text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:17px;line-height:1.5;overflow:hidden}.study-header>div>span{color:var(--muted);font-size:11px}.study-header .study-complete{color:var(--accent);white-space:nowrap;font-size:12px}.study-header .study-complete.is-complete{color:var(--success);opacity:1}.study-reading{overscroll-behavior-y:contain;scrollbar-width:thin;touch-action:pan-y;flex:1;min-height:0;padding:26px max(22px,50vw - 390px) 36px;scroll-padding:28px;overflow-y:auto}.study-paragraph{overflow-wrap:anywhere;content-visibility:auto;contain-intrinsic-size:auto 190px;margin:0 0 25px;padding:2px 0;position:relative}.study-paragraph.is-current{content-visibility:visible}.study-paragraph.is-current:before{content:"";background:var(--accent-strong);width:2px;position:absolute;top:9px;bottom:7px;left:-13px}.study-original{letter-spacing:.1px;color:var(--text);margin:0 0 9px;font-family:Georgia,Times New Roman,serif;font-size:24px;font-weight:400;line-height:1.75}.study-word{min-width:0;min-height:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-align:inherit;color:inherit;vertical-align:baseline;touch-action:manipulation;background:0 0;border:0;border-radius:0;padding:2px 0;display:inline}.study-word:hover,.study-word:focus-visible,.study-spoken-word{color:var(--accent)}.study-word:focus-visible{outline-offset:1px;outline-width:1px}.study-word:active{background:var(--accent-soft)}.study-translation{color:var(--muted);margin:0;font-size:15px;line-height:1.85}.reading-chinese .study-translation{color:var(--text)}.reading-english .study-paragraph{margin-bottom:28px}.study-dock{background:var(--paper);border-top:1px solid var(--line);padding:5px max(14px,calc((100vw - 780px)/2)) max(6px,env(safe-area-inset-bottom));flex-shrink:0;position:relative}.study-player.media-player{background:0 0;border:0;margin:0;padding:0}.study-player>audio[hidden]{display:none}.study-player .study-video{background:var(--rail);border:1px solid var(--line);width:min(180px,40vw);max-height:120px;position:absolute;bottom:calc(100% + 12px);right:18px}.study-tools{grid-template-columns:repeat(5,minmax(0,1fr));align-items:stretch;gap:2px;min-height:63px;display:grid}.study-tools>button,.study-tools>label{min-width:0;min-height:58px;color:var(--text);cursor:pointer;grid-template-rows:26px 14px;align-content:center;justify-items:center;gap:6px;margin:0;padding:6px 0;font-size:13px;font-weight:400;display:grid}.study-tools>button>span:last-child,.study-tools>label>span:last-child{white-space:nowrap;grid-row:2;font-size:11px;line-height:14px}.study-tools>button>svg{grid-row:1;align-self:center;display:block}.study-tools>button>span:first-child:not(:last-child),.study-tools .study-speed-value{font-variant-numeric:tabular-nums;grid-row:1;align-self:center;height:26px;font-size:18px;font-weight:500;line-height:26px;display:block}.study-tools>button.selected{color:var(--accent)}.study-speed{position:relative}.study-speed select{opacity:0;cursor:pointer;width:100%;max-width:none;height:100%;min-height:44px;margin:0;padding:0;font-size:16px;display:block;position:absolute;inset:0}.study-speed:focus-within{outline:2px solid var(--accent);outline-offset:-3px}.study-timeline{padding:3px 5px 0}.study-timeline>input{width:100%;height:24px;min-height:24px;accent-color:var(--accent-strong);cursor:pointer;background:0 0;border:0;margin:0;padding:0;display:block}.study-timeline>div,.study-text-progress{color:var(--muted);font-variant-numeric:tabular-nums;justify-content:space-between;gap:12px;font-size:11px;display:flex}.study-timeline>div{margin-top:0}.study-text-progress{border-top:1px solid var(--line);padding:10px 5px 0}.study-transport{grid-template-columns:1fr 1fr 1.25fr 1fr 1fr;place-items:center;gap:8px;min-height:52px;display:grid}.study-transport>button{justify-content:center;align-items:center;min-width:44px;min-height:46px;padding:4px;display:flex}.study-transport .study-play{color:var(--ink)}.study-audio-label{color:var(--muted);font-size:11px}.study-player>.upload-error{z-index:2;margin:0;padding:10px;font-size:12px;line-height:1.5;position:absolute;bottom:calc(100% + 8px);left:12px;right:12px}.study-player>.upload-error button{min-height:44px;margin-left:6px;text-decoration:underline}.study-follow{z-index:2;min-height:44px;color:var(--accent);background:var(--panel);border:1px solid var(--line);align-items:center;gap:6px;padding:8px 12px;font-size:12px;display:flex;position:absolute;bottom:206px;right:max(18px,50vw - 390px)}.study-sheet-shade{z-index:4;background:#0004;position:absolute;inset:0}.study-sheet{z-index:5;background:var(--panel);border:1px solid var(--line-strong);max-height:67%;padding-bottom:env(safe-area-inset-bottom);border-bottom:0;flex-direction:column;display:flex;position:absolute;bottom:0;left:max(0px,50vw - 460px);right:max(0px,50vw - 460px);box-shadow:0 -12px 36px #0004}.study-sheet[hidden]{display:none}.study-sheet>header{border-bottom:1px solid var(--line);flex-shrink:0;justify-content:space-between;align-items:center;min-height:52px;padding:8px 16px;display:flex}.study-sheet h2{overflow-wrap:anywhere;margin:0;font-size:18px}.study-sheet>header button{justify-content:center;align-items:center;min-width:44px;min-height:44px;display:flex}.study-sheet-content{overscroll-behavior:contain;min-height:0;padding:16px;overflow-y:auto}.study-sheet-content>[hidden],.study-sheet-content [hidden]{display:none}.study-practice-prompt{color:var(--ink);margin:0 0 12px;font-size:20px;line-height:1.7}.study-practice-modes{border-bottom:1px solid var(--line);gap:18px;margin-bottom:12px;display:flex}.study-practice-modes>button{min-height:44px;color:var(--muted);padding:4px 0;font-size:13px}.study-practice-modes>button[aria-pressed=true]{color:var(--accent);border-bottom:2px solid var(--accent-strong)}.study-sheet .recorder{background:0 0;border:0;margin:0;padding:0}.study-sheet .recorder-heading{display:none}.study-sheet .recorder-actions{gap:8px;margin:12px 0}.study-sheet .recorder>label{font-size:12px}.study-sheet .recorder select{min-height:44px}.study-sheet .recorder .fine{font-size:11px}.study-sheet .recording-preview{padding:0}.study-sheet .answer-feedback{border:0;padding:0}.study-sheet .answer-feedback h3{font-size:17px}.study-sheet .dictionary-pronunciation{gap:8px;font-size:16px}.study-sheet .dictionary-article{padding:12px 0}.study-sheet .dictionary-entry h3{font-size:15px}.study-sheet .dictionary-entry p,.study-sheet .dictionary-entry li{font-size:14px}.study-sheet .dictionary-sense-english{font-size:15px}.study-save-form{border-top:1px solid var(--line);margin-top:15px;padding-top:10px}.study-save-form>summary{cursor:pointer;min-height:44px;color:var(--accent);line-height:44px}.study-save-form>summary svg{vertical-align:middle;margin-right:8px}.study-save-form label,.study-options>label{color:var(--muted);margin:12px 0;font-size:12px;display:block}.study-save-form input,.study-options>label select{width:100%;min-height:44px;color:var(--text);background:var(--input);border:1px solid var(--line);margin-top:6px;padding:10px;font-size:16px;display:block}.study-options>button{min-height:46px;color:var(--accent);align-items:center;gap:10px;padding:8px 0;font-size:14px;display:flex}.study-options .optional-tools{margin:12px 0}.study-context:empty{display:none}.study-ai-point{border-bottom:1px solid var(--line);margin:0 0 24px;padding-bottom:14px}.study-ai-point h2{font-size:17px}.study-ai-point p{color:var(--muted);font-size:14px}.study-ai-point a,.study-ai-point button{min-height:44px;color:var(--accent);align-items:center;display:inline-flex}.study-error{margin:8px 16px;font-size:13px}.study-empty>p{color:var(--muted);font-size:14px}@media (max-width:600px){.study-header{gap:3px;min-height:56px;padding:5px 8px}.study-header h1{font-size:15px}.study-header>div>span{font-size:10px}.study-header .study-complete{gap:3px;padding:4px;font-size:11px}.study-header .study-complete svg{width:16px}.study-reading{padding:20px 22px 26px}.study-original{font-size:22px;line-height:1.75}.study-paragraph{margin-bottom:25px}.study-translation{font-size:14px;line-height:1.85}.study-dock{padding:4px 12px max(4px,env(safe-area-inset-bottom))}.study-tools{min-height:59px}.study-tools>button,.study-tools>label{min-height:55px}.study-transport{min-height:50px}.study-follow{bottom:190px}.study-sheet{max-height:70%}.study-sheet-content{padding:14px 18px}.study-practice-prompt{font-size:18px}.study-sheet .button{padding:10px 12px}.study-sheet .dictionary-entry .button{font-size:12px}.study-workspace .study-sheet textarea{font-size:16px}}@media (prefers-reduced-motion:reduce){.study-reading{scroll-behavior:auto}}.study-token{white-space:nowrap}.study-word{font-weight:400}.study-workspace:focus{outline:none}.study-paragraph{margin-left:-12px;padding-left:12px}.study-paragraph.is-current:before{left:0}.study-sheet .recording-limit{color:var(--muted);margin:0 0 12px;font-size:11px}.study-sheet .recording-options{border-top:1px solid var(--line);margin-top:12px}.study-sheet .recording-options>summary{min-height:44px;color:var(--muted);cursor:pointer;font-size:12px;line-height:44px}.study-sheet .recording-options label{margin:10px 0;font-size:12px;display:block}.study-sheet .recording-options select{max-width:100%;margin-top:6px;display:block}.study-sheet .recorder-actions>.primary{min-height:48px;padding:12px 24px}.study-question-preview .question-actions{flex-wrap:wrap;gap:10px;display:flex}.study-question-preview .question-content h3{font-size:20px}.study-question-preview summary,.study-options details>summary{cursor:pointer;min-height:44px;line-height:44px}.study-options details>button{text-align:left;min-height:44px;color:var(--accent);display:block}.study-language-label{color:var(--muted);margin:0 0 18px;font-size:11px}.study-language-status{color:var(--muted);font-size:13px;line-height:1.6}.study-language-status button{color:var(--accent);min-height:44px;margin-left:12px}.study-language-pending{color:var(--muted);font:14px/1.7 system-ui}