:root{--jade:#087f6d;--jade-deep:#075548;--ink:#183d36;--text:#38534c;--muted:#788b84;--bg:#f5f7f4;--paper:#fff;--line:#e4ebe5;--soft:#edf5ef;--cream:#fff8ed;--coral:#e97856;--gold:#eebd5b;--shadow:0 4px 18px #163c2b04;--sidebar:232px;--radius:18px;color-scheme:light}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:106px}body{margin:0;font-family:'Be Vietnam Pro','Segoe UI',Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.7;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}button{color:inherit}svg{flex-shrink:0;vertical-align:middle}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #ecb855;outline-offset:4px}::selection{background:#b8e6d9}button:disabled{cursor:default;opacity:.55}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--ink);line-height:1.3;letter-spacing:-.035em}h1{font-size:40px;font-weight:750}h2{font-size:24px;font-weight:720}h3{font-size:17px;font-weight:700}p{margin-bottom:16px}b,strong{font-weight:650}small{font-size:12px}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip-link{position:fixed;top:-100px;left:16px;padding:10px 18px;background:var(--ink);color:white;z-index:1000}.skip-link:focus{top:10px}.icon{width:20px;height:20px}.eyebrow{display:block;font-size:10px;font-weight:750;letter-spacing:.14em;color:var(--jade);line-height:1.5;margin-bottom:9px}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;flex-shrink:0;border:1px solid transparent;border-radius:10px;background:transparent;color:var(--muted);transition:background .2s,color .2s}.icon-btn:hover{background:var(--soft);color:var(--jade)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:46px;border-radius:10px;padding:11px 19px;border:1px solid transparent;line-height:1.5;font-size:13px;font-weight:650;text-align:center;transition:background .2s,transform .2s,box-shadow .2s}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--jade);color:#fff;box-shadow:0 3px 0 #056754}.btn-primary:hover{background:#066b5b}.btn-secondary{background:var(--paper);border-color:var(--line);color:var(--ink)}.btn-secondary:hover{background:var(--soft)}.btn .icon{width:17px;height:17px}.quiet-link{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:650;color:var(--jade);background:none;border:0;padding:0;line-height:1.6}.quiet-link:hover{text-decoration:underline}.quiet-link .icon{width:16px;height:16px}.round-link{display:flex;align-items:center;justify-content:center;width:35px;height:35px;flex-shrink:0;border:0;border-radius:50%;background:var(--soft);color:var(--jade)}.round-link:hover{background:var(--jade);color:white}.round-link .icon{width:17px;height:17px}.caption,.small-note{font-size:11px;color:var(--muted)}.tiny-sep{padding:0 4px;color:#bbc7c0}.panel{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
/* Application frame */
.sidebar{position:fixed;left:0;top:0;bottom:0;width:var(--sidebar);border-right:1px solid var(--line);background:var(--paper);padding:29px 16px 22px;display:flex;flex-direction:column;z-index:70;overflow-y:auto}.brand{display:flex;align-items:center;gap:10px;padding:0 12px;margin-bottom:42px}.brand-mark{display:flex;align-items:center;justify-content:center;width:42px;height:44px;border-radius:14px 14px 14px 4px;background:var(--jade);color:var(--cream);font-family:Georgia,'Noto Serif SC',serif;font-size:30px;line-height:1}.brand-text{font-size:21px;letter-spacing:-1px;line-height:1.2;font-weight:800;color:var(--ink);white-space:nowrap}.brand-text small{display:block;letter-spacing:4.2px;font-size:9px;font-weight:650;color:var(--jade);margin-top:5px}.nav-heading{font-size:9px;letter-spacing:.14em;color:#91a199;padding:0 14px;margin-bottom:13px;font-weight:650}.nav-item{display:flex;align-items:center;gap:12px;padding:12px 13px;margin-bottom:5px;border-radius:10px;color:#667d73;font-size:12px;line-height:1.6;font-weight:550;position:relative}.nav-item .icon{width:18px;height:18px}.nav-item:hover{background:var(--bg);color:var(--ink)}.nav-item.active{background:#e9f4ed;color:var(--jade);font-weight:700}.nav-item.active:before{content:'';position:absolute;left:-16px;width:3px;height:22px;background:var(--jade);border-radius:0 3px 3px 0}.nav-new{font-size:7px;letter-spacing:.05em;padding:1px 5px;background:#fff0da;color:#9b733b;border-radius:3px;margin-left:auto;line-height:1.8}.sidebar-tip{border:1px solid var(--line);background:linear-gradient(140deg,var(--cream),var(--paper));padding:16px;border-radius:14px;margin:34px 4px 20px;position:relative}.tip-symbol{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;background:#ecf1d9;color:#7c8a40;border-radius:8px;margin-bottom:11px}.tip-symbol .icon{width:16px;height:16px}.sidebar-tip strong{font-size:11px;display:block;color:var(--ink)}.sidebar-tip p{font-size:10px;line-height:1.9;color:var(--muted);margin:5px 0 10px}.sidebar-tip a{font-size:9px;color:var(--jade);font-weight:650;display:flex;align-items:center;gap:5px}.sidebar-tip .icon{width:13px;height:13px}.sidebar-bottom{margin-top:auto;padding:20px 12px 0}.sidebar-bottom>a{display:flex;align-items:center;gap:9px;font-size:11px;color:var(--muted);margin-bottom:13px}.sidebar-bottom>a .icon{width:16px;height:16px}.sidebar-bottom>span{font-size:8px;color:#9aa9a1;letter-spacing:.01em}.app-shell{margin-left:var(--sidebar)}.topbar{height:78px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 32px;gap:16px;background:var(--paper);position:sticky;top:0;z-index:40}.topbar-left,.topbar-actions{display:flex;align-items:center;gap:12px;min-width:0}.topbar-greeting{font-size:11px;font-weight:500;color:var(--muted);display:flex;align-items:center;gap:8px;white-space:nowrap}.live-dot{width:6px;height:6px;background:var(--jade);border-radius:50%}.search-trigger{display:flex;align-items:center;gap:8px;background:var(--bg);border:1px solid var(--line);color:#91a097;border-radius:8px;height:36px;padding:0 10px;font-size:10px;min-width:225px}.search-trigger .icon{width:15px;height:15px}.search-trigger kbd{margin-left:auto;font-family:inherit;font-size:9px;border:1px solid var(--line);border-radius:4px;padding:0 4px;background:var(--paper);color:var(--muted)}.pinyin-toggle{font-family:Georgia,serif;color:var(--jade);font-size:16px;font-weight:650}.guest-profile{border-left:1px solid var(--line);padding-left:15px;margin-left:4px}.guest-profile>span{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;font-size:12px;font-weight:700;background:#efe4cb;color:#806947}.mobile-menu,.topbar-brand{display:none}.page-content{padding:27px 32px 50px;max-width:1550px;margin:0 auto;min-height:75vh}.welcome-line{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:22px}.welcome-line .eyebrow{font-size:9px;margin-bottom:6px;letter-spacing:.15em}.welcome-line p{margin:0;font-size:18px;color:var(--ink);font-weight:650;letter-spacing:-.4px}.welcome-link{font-size:10px;display:flex;align-items:center;gap:6px;color:var(--muted)}.welcome-link .icon{width:13px;height:13px}.dashboard-grid{display:grid;grid-template-columns:minmax(0,1fr) 274px;gap:25px;align-items:start}.main-column{min-width:0}.right-rail{display:flex;flex-direction:column;gap:19px;min-width:0}.right-rail .panel{padding:21px}.panel-label{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--ink);font-weight:650;line-height:1.5}.panel-label>.icon{width:18px;height:18px;color:var(--coral)}
/* Daily learning dashboard */
.hero{position:relative;display:flex;min-height:322px;overflow:hidden;border-radius:20px;background:#0b5145;color:white;padding:32px 30px}.hero:after{content:'';position:absolute;width:400px;height:400px;border:1px solid #ffffff0b;border-radius:50%;right:-190px;top:-100px;pointer-events:none}.hero-copy{position:relative;z-index:2;width:64%;min-width:300px}.hero-badge{display:inline-flex;align-items:center;gap:6px;color:#b5dbc6;font-size:8px;letter-spacing:.13em;font-weight:600;margin-bottom:19px}.hero-badge>span{display:inline-block;width:4px;height:4px;border-radius:50%;background:#e7bd6c}.hero h1{font-size:33px;line-height:1.35;letter-spacing:-1.4px;color:white;margin-bottom:14px;font-weight:700}.hero h1 em{font-style:normal;color:#f0cf86}.hero-copy>p{font-size:11px;line-height:1.9;color:#c2d9ce;max-width:310px;margin-bottom:22px}.hero .btn-primary{background:var(--cream);color:var(--jade-deep);box-shadow:0 3px 0 #d8d7bb;font-size:11px;padding:11px 16px;min-height:42px}.hero .btn-primary:hover{background:#fff}.hero-footnote{display:flex;align-items:center;gap:5px;font-size:8px;color:#b3cfc3;margin-top:13px}.hero-footnote .icon{width:12px;height:12px}.hero-illustration{position:absolute;right:-4%;bottom:-5px;width:46%;height:100%;pointer-events:none}.hero-illustration img{position:absolute;bottom:0;left:0;width:100%;height:auto;object-fit:contain;max-height:96%;filter:drop-shadow(0 9px 6px #002b2420)}.hero-circle{position:absolute;left:15%;top:18%;width:240px;height:240px;background:#74ab8f22;border:1px solid #b5e4c723;border-radius:50%}.hero-circle:before,.hero-circle:after{content:'';position:absolute;border:1px solid #b5e4c715;inset:-20px;border-radius:50%}.hero-circle:after{inset:-42px}.hero-word{position:absolute;right:24px;top:23px;background:#fffaf1ee;border-radius:15px 15px 15px 3px;color:var(--jade-deep);padding:7px 13px;font-size:22px;line-height:1.4;transform:rotate(7deg);box-shadow:0 4px 12px #07382f12}.hero-word small{font-size:8px;display:block;text-align:center;font-family:inherit}.hero-cloud{position:absolute;width:70px;height:12px;background:#d4eac312;border-radius:40px}.cloud-one{top:25%;left:1%}.cloud-two{bottom:20%;right:7%;width:100px}.content-metrics{display:flex;align-items:center;padding:20px 4px 0;margin:0 0 34px;gap:10px;justify-content:space-between}.content-metrics>div{display:flex;align-items:center;gap:10px;flex:1}.content-metrics>div+div{border-left:1px solid var(--line);padding-left:21px}.content-metrics>.icon,.content-metrics>div>.icon{width:18px;height:18px;color:#76a38e}.content-metrics strong,.content-metrics small{display:block}.content-metrics strong{font-size:11px;color:var(--ink);font-weight:650}.content-metrics small{font-size:9px;color:var(--muted);margin-top:2px}.home-section{margin-bottom:32px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:12px;margin-bottom:17px}.section-heading .eyebrow{font-size:8px;letter-spacing:.16em;margin-bottom:6px;color:#91a296}.section-heading h2{font-size:19px;margin-bottom:0}.section-heading .quiet-link{font-size:10px;padding-bottom:2px;white-space:nowrap}.path-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.path-card{display:flex;align-items:center;gap:12px;padding:19px 15px;border:1px solid var(--line);border-radius:14px;background:var(--paper);transition:transform .2s,border .2s}.path-card:hover{transform:translateY(-3px);border-color:#a6cbb6}.path-card>.icon{width:16px;height:16px;margin-left:auto;color:var(--muted)}.path-icon{display:flex;align-items:center;justify-content:center;width:38px;height:42px;border-radius:10px;flex-shrink:0;background:#eaf4e9;color:#5d8960}.speaking-path .path-icon{background:#fff0df;color:#bc8b49}.path-icon .icon{width:22px;height:22px}.card-kicker{display:block;font-size:7px;letter-spacing:.09em;color:var(--muted);font-weight:600;margin-bottom:5px}.path-card h3{font-size:12px;margin-bottom:5px;letter-spacing:-.3px}.path-card p{font-size:9px;margin-bottom:0;line-height:1.8;color:var(--muted)}.lesson-grid{display:grid;gap:18px}.home-lesson-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.lesson-card{background:var(--paper);border:1px solid var(--line);border-radius:15px;overflow:hidden;transition:transform .2s,box-shadow .2s;min-width:0}.lesson-card:hover{transform:translateY(-3px);box-shadow:0 9px 22px #173d3509}.lesson-art{display:block;position:relative;height:122px;padding:13px 15px;overflow:hidden}.lesson-art:before{content:'';position:absolute;width:110px;height:110px;border:1px solid currentColor;opacity:.08;right:-5px;bottom:-35px;border-radius:50%}.lesson-art:after{content:'';position:absolute;width:170px;height:170px;border:1px solid currentColor;opacity:.07;right:-35px;bottom:-65px;border-radius:50%}.jade{background:#e5efe4;color:#34745d}.coral{background:#fae8db;color:#b26d4f}.sand{background:#f4edda;color:#a3843e}.blue{background:#e4eef1;color:#578993}.lilac{background:#efebf4;color:#8d75a0}.mint{background:#e8f2ed;color:#5b8d76}.lesson-number{font-size:7px;font-weight:700;letter-spacing:.1em;opacity:.7}.art-hanzi{position:absolute;font-family:'Noto Sans SC','Microsoft YaHei',sans-serif;right:22px;bottom:16px;font-weight:600;font-size:47px;letter-spacing:-3px;line-height:1.1}.art-dots{position:absolute;left:24px;bottom:19px;font-size:24px;opacity:.24}.lesson-card-body{padding:15px 14px 13px}.card-meta{display:flex;align-items:center;justify-content:space-between;gap:6px;font-size:8px;color:var(--muted);margin-bottom:9px}.card-meta>span:first-child{color:var(--jade)}.card-meta .icon{width:10px;height:10px;margin-right:3px}.lesson-card h3{font-size:13px;letter-spacing:-.25px;margin:0 0 8px}.lesson-card h3 a:hover{color:var(--jade)}.lesson-card-body>p{font-size:10px;color:var(--muted);line-height:1.8;margin-bottom:13px;min-height:36px}.lesson-card-bottom{display:flex;justify-content:space-between;align-items:center;gap:8px;padding-top:10px;border-top:1px solid var(--line)}.lesson-card-bottom>span{font-size:8px;color:var(--muted)}.lesson-card .round-link{width:28px;height:28px}.lesson-card .round-link .icon{width:14px;height:14px}.lesson-state{display:block;font-size:9px;color:var(--jade);font-weight:600}.lesson-state:empty{display:none}.lesson-state:not(:empty){margin-top:8px}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.tool-card{display:flex;align-items:center;gap:17px;padding:21px 18px;background:var(--paper);border:1px solid var(--line);border-radius:14px;text-align:left}.tool-glyph{flex-shrink:0;width:62px;height:62px;background:#f2f3e8;color:#889054;border-radius:13px;display:flex;align-items:center;justify-content:center;font-family:Georgia,serif;font-size:25px;position:relative}.tool-glyph>span{position:absolute;right:5px;bottom:5px;font-size:16px;opacity:.2}.tool-card h3,.tool-card strong{display:block;color:var(--ink);font-size:12px;margin:0 0 5px;letter-spacing:-.2px;font-weight:700}.tool-card p,.tool-description{display:block;color:var(--muted);font-size:9px;line-height:1.8;margin:0 0 8px}.tool-card .quiet-link{font-size:9px}.cards-glyph{background:#edf0f6;color:#7c91ad}.cards-glyph .icon{width:30px;height:30px}.streak-value{display:flex;align-items:center;gap:14px;margin:22px 0 12px}.flame-badge{display:flex;align-items:center;justify-content:center;width:53px;height:60px;background:#fff4dd;color:#e9a843;border-radius:17px;transform:rotate(-5deg)}.flame-badge .icon{width:30px;height:30px;fill:#efc777;stroke:#dc9a34;stroke-width:1.4}.streak-value>div{display:flex;align-items:baseline;gap:7px;flex-wrap:wrap}.streak-value strong{font-size:44px;line-height:1;letter-spacing:-2px;color:var(--ink);font-weight:750}.streak-value>div>span{font-size:10px;font-weight:600;color:var(--muted)}.streak-card>p{font-size:10px;line-height:1.8;color:var(--muted);margin-bottom:19px}.week-strip{display:flex;justify-content:space-between;gap:5px;margin:12px 0 18px}.week-day{display:flex;align-items:center;flex-direction:column;gap:7px}.week-day small{font-size:8px;color:var(--muted)}.week-day b{display:flex;align-items:center;justify-content:center;width:23px;height:23px;border:1px solid var(--line);border-radius:50%;background:var(--bg);color:transparent}.week-day .icon{width:12px;height:12px}.week-day.is-today b{border-color:#cc9e58;background:#fff5df;box-shadow:0 0 0 3px #f6ead34d}.week-day.is-today small{color:#ac803b;font-weight:700}.week-day.is-done b{background:var(--jade);border-color:var(--jade);color:white}.streak-card>.quiet-link{font-size:10px}.goal-card .panel-label>.icon{color:#7b9d84}.goal-number{display:flex;align-items:baseline;gap:6px;margin:20px 0 9px}.goal-number strong{font-size:30px;line-height:1.2;color:var(--ink);letter-spacing:-1px}.goal-number span{font-size:11px;color:var(--muted)}.goal-number span b{font-weight:500}.progress-track{height:7px;background:var(--soft);border-radius:10px;overflow:hidden;margin-bottom:13px}.progress-track>span{display:block;height:100%;background:var(--jade);border-radius:10px;transition:width .4s}.goal-card>p:not(.goal-number){font-size:9px;margin-bottom:12px;color:var(--muted)}.goal-options{display:flex;gap:7px}.goal-options button{flex:1;padding:4px;border-radius:6px;border:1px solid var(--line);background:var(--paper);font-size:10px;color:var(--muted)}.goal-options button.selected,.goal-options button.is-selected,.goal-options button[aria-pressed=true]{background:var(--soft);border-color:#bfd7c8;color:var(--jade);font-weight:650}.word-of-day{padding:22px;background:#f5eedf;border:1px solid #eee4d1;border-radius:18px;display:flex;align-items:center;flex-direction:column;text-align:center}.word-day-heading{display:flex;align-items:center;justify-content:space-between;width:100%;color:#a18b63;margin-bottom:16px}.word-day-heading>span{font-size:7px;letter-spacing:.1em;font-weight:650}.word-day-heading .icon{width:16px;height:16px}.daily-hanzi{font-family:'Noto Sans SC',serif;font-size:56px;line-height:1.4;color:#5c6b49;font-weight:500;letter-spacing:1px}.word-of-day>.pinyin{font-size:13px;color:#8d9373;letter-spacing:.04em}.word-of-day>strong{margin-top:12px;font-size:13px;color:#716c54}.word-of-day>p{font-size:10px;color:#9c947c;max-width:170px;line-height:1.8;margin:7px 0 15px}.word-audio{display:flex;align-items:center;gap:7px;padding:7px 12px;border:1px solid #d9d5bf;border-radius:7px;background:transparent;color:#7c825d;font-size:9px}.word-audio .icon{width:14px;height:14px}.local-note{display:flex;align-items:center;gap:9px;font-size:9px;color:var(--muted);padding:0 12px}.local-note .icon{width:17px;height:17px;color:#9ead9d}.local-note p{margin:0;font-size:9px;line-height:1.8}.seo-intro{border-top:1px solid var(--line);margin-top:8px;padding-top:27px}.seo-intro h2{font-size:20px;max-width:480px;line-height:1.5}.seo-intro>p{font-size:11px;color:var(--muted);line-height:2}.seo-intro a,.prose a:not(.btn){color:var(--jade);text-decoration:underline;text-underline-offset:3px}details{border-bottom:1px solid var(--line);padding:14px 0}summary{cursor:pointer;list-style:none;font-size:12px;font-weight:600;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:10px}summary:after{content:'+';color:var(--jade);font-weight:500;font-size:20px}details[open] summary:after{content:'−'}details p{font-size:11px;color:var(--muted);margin:12px 0 4px;line-height:1.9}.footer{border-top:1px solid var(--line);padding:27px 32px 20px;display:flex;flex-wrap:wrap;align-items:center;gap:14px 30px;font-size:9px;color:var(--muted)}.footer>div{display:flex;flex-direction:column;gap:4px}.footer-brand{font-size:13px;font-weight:750;letter-spacing:-.3px;color:var(--ink)}.footer nav{display:flex;gap:20px;margin-left:auto;flex-wrap:wrap}.footer nav a:hover{color:var(--jade)}.footer>p{font-size:8px;margin:4px 0 0;flex-basis:100%;color:#9aa69d}.nav-scrim{display:none}
/* Public learning pages */
.page-heading{max-width:850px;padding:2px 0 28px}.breadcrumb{display:flex;align-items:center;gap:7px;font-size:10px;color:var(--muted);margin-bottom:24px}.breadcrumb .icon{width:13px;height:13px}.page-heading .eyebrow{font-size:9px;margin-bottom:12px}.page-heading h1{font-size:35px;line-height:1.4;max-width:790px;margin-bottom:13px}.page-heading>p{color:var(--muted);font-size:13px;line-height:1.9;max-width:720px;margin-bottom:0}.page-heading>.btn{margin-top:22px}.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 274px;gap:25px;align-items:start}.article-grid>div,.article-grid>article,.article-grid>section{min-width:0}.roadmap-intro{display:flex;gap:20px;margin-bottom:24px;background:#eff6ef}.intro-icon{display:flex;width:48px;height:48px;border-radius:12px;background:var(--paper);align-items:center;justify-content:center;color:var(--jade);flex-shrink:0}.roadmap-intro h2{font-size:19px;margin-bottom:8px}.roadmap-intro p{font-size:12px;color:var(--muted);margin-bottom:12px}.roadmap{margin-bottom:28px}.roadmap-step{display:flex;align-items:center;gap:20px;position:relative;margin-bottom:15px;padding:22px;background:var(--paper);border:1px solid var(--line);border-radius:16px}.step-pin{width:43px;height:43px;flex-shrink:0;display:flex;align-items:center;justify-content:center;border-radius:50%;background:var(--soft);color:var(--jade);font-size:14px;font-weight:700}.step-content{flex:1}.step-content .card-meta{justify-content:start;gap:18px;font-size:9px}.step-content h2{font-size:18px;margin-bottom:8px}.step-content p{font-size:11px;color:var(--muted);margin-bottom:12px}.step-actions{display:flex;align-items:center;gap:14px}.step-actions .quiet-link,.step-actions>span{font-size:10px;color:var(--jade)}.prose{font-size:13px;line-height:1.95;color:var(--text)}.prose h2{font-size:21px;margin:27px 0 13px;line-height:1.5}.prose h2:first-child{margin-top:0}.prose h3{font-size:16px;line-height:1.6;margin:22px 0 10px}.prose p{margin-bottom:16px}.prose li{margin-bottom:10px;padding-left:5px}.prose ol{padding-left:23px}.readable{max-width:900px;padding:34px 40px}.readable .btn{margin-top:10px}.filter-row{display:flex;gap:9px;flex-wrap:wrap;margin:0 0 24px}.filter-chip{border:1px solid var(--line);background:var(--paper);padding:8px 15px;border-radius:8px;font-size:11px;color:var(--muted)}.filter-chip.active,.filter-chip.is-active,.filter-chip[aria-pressed=true]{background:var(--jade);color:white;border-color:var(--jade)}.catalog-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:23px}.catalog-grid .lesson-art{height:160px}.catalog-grid .art-hanzi{font-size:62px}.catalog-grid .lesson-card-body{padding:20px}.catalog-grid .lesson-card h3{font-size:17px}.catalog-grid .card-meta{font-size:10px}.catalog-grid .lesson-card-body>p{font-size:12px;min-height:43px}.catalog-grid .lesson-card-bottom>span{font-size:10px}.catalog-note{margin-top:30px}.lesson-overview{display:flex;align-items:center;gap:25px;background:#eaf3e8;margin-bottom:24px}.lesson-big-hanzi{font-size:52px;line-height:1.2;flex-shrink:0;color:#4c8061;font-weight:600}.lesson-overview .eyebrow{font-size:8px;color:#7f9882}.lesson-overview p{font-size:13px;margin-bottom:14px;color:#476b50}.lesson-tags{display:flex;gap:16px;flex-wrap:wrap;font-size:9px;color:#829883}.lesson-tags .icon{width:12px;height:12px}.lesson-article>.prose{margin-bottom:30px}.article-section{margin:32px 0}.article-section>h2{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--jade);margin-bottom:17px}.article-section>h2>span{color:var(--ink);font-size:21px}.table-wrap{border:1px solid var(--line);background:var(--paper);border-radius:14px;overflow:auto}.vocab-table{border-collapse:collapse;width:100%;text-align:left}.vocab-table th{padding:12px 18px;font-size:10px;color:var(--muted);background:var(--bg);font-weight:650;white-space:nowrap}.vocab-table td{padding:11px 18px;border-top:1px solid var(--line);font-size:12px}.vocab-table td:last-child{text-align:right;padding-right:12px}.vocab-table .table-hanzi{font-size:25px;color:var(--ink);white-space:nowrap}.vocab-table .pinyin{font-size:12px;color:var(--jade)}.caption{font-size:10px;margin:9px 0}.dialogue-panel{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:9px 23px}.dialogue-line{display:flex;gap:13px;padding:18px 0;align-items:start}.dialogue-line+.dialogue-line{border-top:1px dashed var(--line)}.speaker-avatar{display:flex;align-items:center;justify-content:center;min-width:30px;max-width:45px;height:30px;padding:3px;border-radius:50%;background:var(--soft);font-size:10px;color:var(--jade);margin-top:4px;overflow:hidden}.dialogue-line>div{flex:1}.dialogue-line p{margin-bottom:3px;font-size:11px;color:var(--muted)}.dialogue-line .dialogue-hanzi{font-size:21px;color:var(--ink);line-height:1.7}.dialogue-line .pinyin{font-size:12px;color:var(--jade)}.lesson-note{border-left:3px solid #a3c4a9;background:#eef4eb;border-radius:0 9px 9px 0;padding:18px 21px;margin-bottom:14px}.lesson-note h3{font-size:14px;margin-bottom:7px}.lesson-note p{font-size:12px;line-height:1.9;margin-bottom:0}.practice-banner{background:var(--jade-deep);border-radius:16px;padding:28px;color:#cce0d7;margin:30px 0;display:flex;align-items:center;justify-content:space-between;gap:24px}.practice-banner .eyebrow{color:#b2cfae;font-size:8px}.practice-banner h2{font-size:19px;color:var(--cream);margin-bottom:9px}.practice-banner p{font-size:11px;margin-bottom:0}.practice-banner .btn{white-space:nowrap;background:var(--cream);color:var(--jade-deep);box-shadow:none;font-size:11px}.article-byline{font-size:9px;color:var(--muted);line-height:1.8}.lesson-aside{display:flex;flex-direction:column;gap:20px;position:sticky;top:103px}.lesson-cta h2{font-size:19px}.lesson-cta>p{font-size:11px;color:var(--muted);margin-bottom:20px}.lesson-cta .btn{display:flex;width:100%;margin-bottom:10px;font-size:11px}.lesson-cta small{font-size:9px;color:var(--muted);display:block;text-align:center;margin-top:13px}.lesson-cta [data-lesson-status]{font-size:11px;color:var(--jade)}.article-toc>strong,.related>strong{font-size:12px;color:var(--ink);display:block;margin-bottom:12px}.article-toc a{display:block;font-size:11px;color:var(--muted);padding:7px 0}.article-toc a:hover{color:var(--jade)}.related-item{display:flex;justify-content:space-between;align-items:center;padding:10px 0;font-size:10px;border-top:1px solid var(--line)}.related-item .icon{width:13px;height:13px;color:var(--jade)}.pinyin-notice{display:flex;align-items:start;gap:12px;background:#f7f1e4;border:1px solid #ebe2d0;border-radius:12px;padding:16px 20px;margin-bottom:24px;color:#8b7954}.pinyin-notice>.icon{width:17px;height:17px;margin-top:3px}.pinyin-notice>p{font-size:11px;line-height:1.9;margin-bottom:0;max-width:900px}.anchor-tabs{display:flex;gap:9px;margin-bottom:28px}.anchor-tabs>a{padding:9px 18px;background:var(--paper);border:1px solid var(--line);border-radius:8px;font-size:12px;color:var(--jade);font-weight:600}.learning-section{margin:25px 0 40px}.tone-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;margin-bottom:19px}.tone-card{display:flex;flex-direction:column;align-items:center;text-align:center;background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:22px 13px;position:relative;min-width:0;transition:transform .2s}.tone-card:hover{transform:translateY(-3px);border-color:#b0cbb7}.tone-card>span{font-size:10px;color:var(--muted);margin-bottom:12px}.tone-card>strong{font-size:35px;color:var(--jade);font-weight:650}.tone-card>b{font-size:29px;color:var(--ink);margin:4px 0}.tone-card>small{font-size:11px;color:var(--muted)}.tone-card>p{font-size:10px;color:var(--muted);line-height:1.7;margin:13px 0 10px;min-height:34px}.tone-card>.icon{color:#93b39c;width:17px;height:17px;margin-top:10px}.tone-1>strong{color:#bf8e43}.tone-2>strong{color:#6a93b0}.tone-3>strong{color:#cd7d69}.tone-4>strong{color:#8d849a}.sound-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:13px}.sound-tile{display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;min-height:124px;border:1px solid var(--line);border-radius:13px;background:var(--paper);padding:14px;color:var(--ink)}.sound-tile:hover{background:var(--soft);border-color:#b8d1bf}.sound-tile>strong{font-size:25px;line-height:1.3;color:var(--jade);margin-bottom:8px}.sound-tile>.pinyin{font-size:10px;color:var(--muted)}.sound-tile>small{font-size:17px;color:#9bae9f}.sound-tile>.icon{position:absolute;right:9px;top:9px;width:12px;height:12px;color:#adbbb0}.vocab-search{display:flex;align-items:center;gap:10px;background:var(--paper);border:1px solid var(--line);padding:11px 16px;border-radius:11px;max-width:590px;margin-bottom:30px}.vocab-search>.icon{width:17px;height:17px;color:var(--muted)}.vocab-search>input{border:0;background:transparent;outline:0;color:var(--text);width:100%;font-size:12px;min-height:24px}.vocab-topic{margin-bottom:35px}.word-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}.vocab-mini{display:flex;flex-direction:column;padding:22px;background:var(--paper);border:1px solid var(--line);border-radius:14px;position:relative;min-height:165px}.vocab-mini>.icon-btn{position:absolute;right:9px;top:9px}.vocab-mini>span[lang]{font-size:33px;line-height:1.5;margin-bottom:7px;color:var(--ink);padding-right:15px}.vocab-mini>.pinyin{font-size:11px;color:var(--jade);margin-bottom:7px}.vocab-mini>strong{font-size:12px;font-weight:500;color:var(--muted)}.filter-empty{font-size:12px;color:var(--muted);padding:20px}.review-hero{display:grid;grid-template-columns:250px 1fr;gap:45px;align-items:center;padding:38px 45px;margin-bottom:36px;background:#eff5eb}.review-art{aspect-ratio:4/5;max-height:270px;border-radius:19px;background:var(--paper);border:1px solid #dae5d6;box-shadow:8px 9px 0 #d4e2cb,14px 16px 0 #e2eada;display:flex;flex-direction:column;justify-content:center;align-items:center;transform:rotate(-5deg)}.review-art>span:first-child{font-size:64px;color:var(--jade);line-height:1.7}.review-art>span:nth-child(2){color:#8eaa90;font-size:17px}.review-art>span:last-child{font-size:16px;color:var(--muted);margin-top:18px}.review-hero h2{font-size:28px;max-width:400px;line-height:1.4}.review-hero p{font-size:13px;color:var(--muted);max-width:420px;line-height:1.9}.review-hero .small-note{display:block;margin-top:16px}.review-topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.review-topic{text-align:left;display:flex;flex-direction:column;position:relative}.review-topic>span{font-size:37px;color:var(--jade);margin-bottom:13px}.review-topic>strong{font-size:14px;color:var(--ink);margin-bottom:6px}.review-topic>small{font-size:10px;color:var(--muted)}.review-topic>.icon{position:absolute;bottom:25px;right:25px;width:18px;height:18px;color:var(--jade)}.review-topic:hover{border-color:#a8c7af;background:var(--soft)}.progress-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-bottom:28px}.progress-stats>.panel{display:flex;flex-direction:column}.progress-stats .icon{color:var(--jade);margin-bottom:12px}.progress-stats strong{font-size:38px;color:var(--ink);line-height:1.4;letter-spacing:-1.5px}.progress-stats span{font-size:11px;color:var(--muted);margin-top:5px}.progress-intro{margin-bottom:17px}.progress-intro h2{font-size:20px;margin-bottom:8px}.progress-intro p{font-size:12px;color:var(--muted);margin-bottom:0}.progress-lessons{margin-bottom:25px}.progress-lesson{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:12px;padding:20px}.progress-lesson h3{font-size:15px;margin-bottom:6px}.progress-lesson [data-lesson-status]{font-size:10px;color:var(--muted)}.progress-lesson [data-lesson-status].is-complete{color:var(--jade)}.progress-lesson .btn{font-size:10px;min-height:38px;padding:8px 12px}
/* Interactive lessons, flashcards, and search */
dialog{color:var(--text);background:var(--paper);border:1px solid var(--line);padding:0;box-shadow:0 28px 90px #0c332b35;max-width:calc(100vw - 28px);max-height:calc(100dvh - 40px);border-radius:22px}dialog::backdrop{background:#102a2470;backdrop-filter:blur(5px)}.learning-dialog{width:680px}.search-dialog{width:620px}.dialog-shell{padding:28px}.dialog-header{display:flex;align-items:start;justify-content:space-between;gap:20px;margin-bottom:21px}.dialog-kicker{font-size:9px;font-weight:650;letter-spacing:.11em;text-transform:uppercase;color:var(--jade);margin:0 0 6px}.dialog-title{font-size:24px;margin:0;line-height:1.5}.dialog-close{border:1px solid var(--line);background:var(--bg);border-radius:50%;width:32px;height:32px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:22px;color:var(--muted);line-height:1}.dialog-close:hover{background:var(--soft);color:var(--jade)}.lesson-progress{height:6px;overflow:hidden;background:var(--soft);border-radius:10px;margin:10px 0}.lesson-progress-fill{height:100%;background:var(--jade);border-radius:10px;transition:width .3s}.step-count{font-size:10px;color:var(--muted);text-align:right;margin-bottom:19px}.lesson-body{min-height:300px}.word-stage{text-align:center;padding:22px 20px 24px;background:var(--bg);border:1px solid var(--line);border-radius:15px}.word-stage-label{font-size:10px;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}.word-hanzi{font-size:70px;color:var(--ink);line-height:1.7;margin:12px 0 0}.word-stage .pinyin{font-size:22px;color:var(--jade);line-height:1.5;margin:0 0 14px}.word-meaning{font-size:20px;color:var(--text);margin:12px 0 20px}.audio-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid #c7dcd0;border-radius:9px;background:var(--paper);padding:8px 15px;color:var(--jade);font-size:12px}.audio-note{display:block;text-align:center;font-size:10px;color:var(--muted);margin:10px 0}.quiz-prompt{font-size:21px;line-height:1.6;color:var(--ink);margin:24px 0}.quiz-options{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0}.quiz-option{padding:18px 16px;border:1px solid var(--line);border-radius:11px;text-align:left;background:var(--paper);font-size:14px;line-height:1.7;color:var(--text);min-height:65px;display:flex;align-items:center;gap:10px}.quiz-option:hover:not(:disabled){background:var(--soft);border-color:#b0cdbb}.quiz-option.is-selected{border-color:var(--jade);background:var(--soft)}.quiz-option.is-correct{background:#e7f4e9;border-color:#66a775;color:#286438;opacity:1}.quiz-option.is-wrong{background:#fff0e9;border-color:#dc9a7d;color:#a05234;opacity:1}.quiz-feedback{border:1px solid var(--line);background:var(--soft);padding:17px 19px;border-radius:11px;font-size:12px;line-height:1.9;margin:18px 0}.quiz-feedback p{margin:3px 0}.quiz-feedback.is-wrong{background:#fff5ec;border-color:#f1d9c3;color:#a36540}.quiz-feedback.is-correct{background:#edf7ee;border-color:#d4e7d6;color:#3c7750}.correct-answer{font-weight:650}.dialog-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}.dialog-footer .btn{min-height:43px;font-size:12px}.dialog-hint{font-size:11px;color:var(--muted);text-align:center;margin:14px 0 0}.completion-view{text-align:center;padding:24px 10px}.completion-symbol{font-size:50px;line-height:1.8;color:var(--jade)}.completion-view h2{font-size:28px;margin:10px 0}.completion-view>p{font-size:13px;color:var(--muted);max-width:440px;margin:12px auto}.completion-stats{display:flex;justify-content:center;gap:15px;padding:22px 0;flex-wrap:wrap}.completion-stats>div{padding:15px 22px;border:1px solid var(--line);border-radius:12px;background:var(--bg);min-width:100px;display:flex;flex-direction:column}.completion-stats strong{font-size:25px;color:var(--jade);display:block}.completion-stats span{font-size:10px;color:var(--muted)}.completion-view .local-note{display:block;text-align:center;font-size:11px;margin-top:15px}.flashcard{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;min-height:290px;border:1px solid #d9e4d8;border-radius:17px;background:linear-gradient(140deg,var(--cream),var(--soft));text-align:center;padding:25px;color:var(--text);box-shadow:0 5px 0 var(--line);transition:transform .25s}.flashcard:hover{transform:translateY(-2px)}.flashcard .word-hanzi{font-size:65px;margin:0}.flashcard .pinyin{font-size:22px;color:var(--jade)}.flashcard .word-meaning{font-size:24px;line-height:1.6;margin:14px 0}.flashcard-meta{font-size:10px;color:var(--muted);margin-bottom:15px}.flashcard-tip{font-size:10px;color:var(--muted);margin-top:18px}.flashcard-navigation{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:20px}.flashcard-navigation button{font-size:11px}.search-input{width:100%;height:48px;padding:12px 15px;border:1px solid var(--line);border-radius:10px;color:var(--text);background:var(--bg);outline:0;font-size:13px}.search-results{margin-top:15px;max-height:55vh;overflow:auto;display:flex;flex-direction:column;gap:7px}.search-result{display:flex;flex-direction:column;gap:3px;padding:13px 15px;border:1px solid var(--line);border-radius:10px;background:var(--paper);font-size:13px}.search-result:hover{background:var(--soft);border-color:#accab6}.search-result-type{font-size:9px;color:var(--jade);letter-spacing:.07em;text-transform:uppercase}.search-result strong{font-size:14px;color:var(--ink)}.search-result small{font-size:11px;color:var(--muted)}.empty-state{text-align:center;padding:30px 16px;color:var(--muted);font-size:12px}.toast{position:fixed;left:calc(50% + 70px);bottom:28px;transform:translate(-50%,15px);padding:13px 20px;border-radius:12px;background:#173d36;color:white;box-shadow:0 5px 25px #0002;z-index:10000;font-size:12px;max-width:calc(100vw - 35px);opacity:0;pointer-events:none;transition:transform .2s,opacity .2s}.toast.show,.toast.is-visible{opacity:1;transform:translate(-50%,0)}.hide-pinyin .pinyin{display:none!important}
/* Dark mode */
html[data-theme=dark]{--ink:#d9eade;--text:#bbcec1;--muted:#8fa396;--bg:#13251f;--paper:#192e26;--line:#2b4135;--soft:#223d2e;--cream:#f7efda;--shadow:none;color-scheme:dark}html[data-theme=dark] .nav-item.active{background:#264935;color:#82cfa8}html[data-theme=dark] .nav-item{color:#9db3a4}html[data-theme=dark] .sidebar-tip{background:#24372a}html[data-theme=dark] .brand-mark,html[data-theme=dark] .btn-primary{background:#177d5f}html[data-theme=dark] .hero .btn-primary{background:var(--cream);color:#075548}html[data-theme=dark] .hero{background:#104735}html[data-theme=dark] .word-of-day{background:#353426;border-color:#4c4831}html[data-theme=dark] .daily-hanzi{color:#d4cd9d}html[data-theme=dark] .word-of-day>strong{color:#d1c399}html[data-theme=dark] .goal-options button.selected{background:#274832;border-color:#42644d;color:#9bd3b1}html[data-theme=dark] .roadmap-intro,html[data-theme=dark] .lesson-overview,html[data-theme=dark] .lesson-note,html[data-theme=dark] .review-hero{background:#243b29}html[data-theme=dark] .lesson-overview p{color:#b1c9b4}html[data-theme=dark] .lesson-big-hanzi{color:#8ab995}html[data-theme=dark] .pinyin-notice{background:#373323;border-color:#4e4730;color:#c5b382}html[data-theme=dark] .flashcard{background:linear-gradient(140deg,#2e3e2a,#1d3829)}html[data-theme=dark] .quiz-option.is-correct,html[data-theme=dark] .quiz-feedback.is-correct{background:#234a2d;color:#b5e9bf;border-color:#43784e}html[data-theme=dark] .quiz-option.is-wrong,html[data-theme=dark] .quiz-feedback.is-wrong{background:#4c3023;color:#f0c4a5;border-color:#8d5f42}html[data-theme=dark] .word-glyph{background:#354031}html[data-theme=dark] .hero-badge{color:#b5dbc6}
/* Responsive layouts */
@media(min-width:1600px){.hero{min-height:360px;padding:39px}.hero h1{font-size:40px}.hero-copy>p{font-size:13px;max-width:355px}.hero .btn-primary{font-size:12px}.hero-footnote{font-size:9px}.hero-badge{font-size:9px}.dashboard-grid,.article-grid{grid-template-columns:minmax(0,1fr) 300px;gap:28px}.path-card h3{font-size:14px}.path-card p{font-size:10px}.lesson-card h3{font-size:15px}.lesson-card-body>p{font-size:11px}.lesson-card-body{padding:18px}.lesson-art{height:142px}.art-hanzi{font-size:55px}.section-heading h2{font-size:22px}}
@media(max-width:1270px){:root{--sidebar:210px}.sidebar{padding-left:12px;padding-right:12px}.brand{padding:0 8px;gap:8px}.brand-text{font-size:19px}.brand-mark{width:38px;height:40px}.nav-item{font-size:11px;gap:9px;padding-left:10px}.nav-new{display:none}.page-content{padding:24px}.topbar{padding:0 24px}.dashboard-grid,.article-grid{grid-template-columns:minmax(0,1fr) 235px;gap:20px}.hero{padding:28px 24px;min-height:310px}.hero h1{font-size:29px}.hero-copy{min-width:270px}.hero-copy>p{max-width:260px;font-size:10px}.hero-illustration{width:44%;right:-6%}.hero-word{right:20px;top:26px}.hero-circle{width:200px;height:200px;left:5%;top:25%}.path-grid,.tool-grid{gap:10px}.path-card{padding:16px 12px;gap:9px}.path-icon{display:none}.content-metrics>div+div{padding-left:12px}.content-metrics strong{font-size:10px}.content-metrics small{font-size:8px}.content-metrics>div{gap:7px}.home-lesson-grid{gap:11px}.lesson-card-body{padding:13px 11px}.lesson-art{height:108px}.art-hanzi{font-size:39px;right:16px}.lesson-number{font-size:6px}.card-meta{font-size:7px}.lesson-card h3{font-size:12px}.lesson-card-body>p{font-size:9px}.lesson-card-bottom>span{font-size:7px}.right-rail .panel{padding:18px}.panel-label{font-size:12px}.streak-value strong{font-size:40px}.flame-badge{width:43px;height:50px}.streak-value{gap:11px}.week-day b{width:21px;height:21px}.tool-card{gap:11px;padding:16px 12px}.tool-glyph{width:46px;height:52px;font-size:21px}.tool-card h3,.tool-card strong{font-size:11px}.tool-card p,.tool-description{font-size:8px}.topbar-greeting{font-size:10px}.search-trigger{min-width:200px}.section-heading h2{font-size:17px}.section-heading .quiet-link{font-size:9px}.sound-grid{grid-template-columns:repeat(6,minmax(0,1fr))}.word-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:1080px){.dashboard-grid,.article-grid{grid-template-columns:minmax(0,1fr)}.right-rail{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.right-rail .local-note{grid-column:1/-1}.hero{min-height:320px}.hero h1{font-size:36px}.hero-copy>p{font-size:12px;max-width:340px}.hero-copy{width:65%}.hero-illustration{width:42%;right:1%}.hero-circle{width:230px;height:230px;top:15%}.hero-word{right:15px;top:17px}.hero-footnote{font-size:9px}.home-lesson-grid .lesson-art{height:140px}.home-lesson-grid .art-hanzi{font-size:48px}.lesson-card h3{font-size:15px}.lesson-card-body>p{font-size:11px}.lesson-card-body{padding:17px}.card-meta{font-size:9px}.lesson-card-bottom>span{font-size:9px}.content-metrics strong{font-size:12px}.content-metrics small{font-size:10px}.path-icon{display:flex}.path-card h3{font-size:14px}.path-card p{font-size:11px}.section-heading h2{font-size:21px}.section-heading .quiet-link{font-size:11px}.panel-label{font-size:11px}.word-of-day{padding:18px 15px}.word-of-day>p{font-size:9px}.daily-hanzi{font-size:43px}.word-day-heading>span{font-size:6px}.word-day-heading{margin-bottom:10px}.streak-value strong{font-size:34px}.streak-value>div>span{font-size:9px}.streak-value{margin:18px 0 12px}.flame-badge{display:none}.week-day b{width:20px;height:20px}.week-day small{font-size:7px}.week-strip{gap:3px}.goal-options{gap:4px}.tool-card h3,.tool-card strong{font-size:14px}.tool-card p,.tool-description{font-size:11px}.tool-glyph{width:60px;height:65px}.tool-card{padding:22px}.tool-card .quiet-link{font-size:10px}.topbar-greeting{display:none}.topbar-actions{margin-left:auto}.lesson-aside{position:static;display:grid;grid-template-columns:1fr 1fr}.lesson-aside .related{grid-column:1/-1}.lesson-aside .related-item{display:inline-flex;width:48%;padding-right:16px}.catalog-grid .lesson-art{height:135px}.catalog-grid .art-hanzi{font-size:48px}.catalog-grid .lesson-card-body{padding:17px}.catalog-grid .lesson-card h3{font-size:15px}.catalog-grid .lesson-card-body>p{font-size:11px}.review-hero{grid-template-columns:200px 1fr;gap:35px;padding:30px}.progress-stats{gap:13px}.progress-stats>.panel{padding:19px}.progress-stats strong{font-size:32px}.progress-stats span{font-size:9px}}
@media(max-width:820px){:root{--sidebar:0px}.sidebar{width:240px;transform:translateX(-100%);transition:transform .25s;z-index:80;padding:28px 17px}.menu-open .sidebar{transform:translateX(0)}.menu-open .nav-scrim{display:block;position:fixed;inset:0;background:#102d2455;backdrop-filter:blur(3px);z-index:75}.sidebar .brand-text{font-size:21px}.sidebar .nav-item{font-size:12px;padding:12px}.sidebar .nav-new{display:block}.app-shell{margin-left:0}.mobile-menu{display:flex}.topbar{height:68px;padding:0 20px}.topbar-brand{display:block;font-size:17px;letter-spacing:-.6px;font-weight:750;color:var(--ink);white-space:nowrap}.topbar-brand small{font-size:9px;font-weight:600;display:block;letter-spacing:2px;text-transform:uppercase;color:var(--jade);line-height:1.4}.topbar-left{gap:9px}.topbar-actions{gap:5px}.search-trigger{min-width:0;width:35px;padding:0;justify-content:center;background:transparent;border-color:transparent}.search-trigger span,.search-trigger kbd{display:none}.search-trigger .icon{width:18px;height:18px}.guest-profile{padding-left:9px;margin-left:5px}.page-content{padding:23px 22px 35px}.welcome-line p{font-size:17px}.welcome-link{font-size:9px}.hero{min-height:318px}.hero h1{font-size:35px}.hero-copy>p{max-width:310px}.hero-illustration{width:42%;right:1%}.hero-word{right:18px;top:18px}.hero-badge{font-size:8px}.footer{padding:23px 22px}.nav-heading{font-size:9px}.sidebar-bottom>span{font-size:8px}.sidebar-tip p{font-size:11px}.sidebar-tip strong{font-size:12px}.sidebar-tip a{font-size:10px}.toast{left:50%;bottom:20px}.page-heading h1{font-size:32px}.sound-grid{grid-template-columns:repeat(6,minmax(0,1fr))}.tone-card{padding:18px 10px}.tone-card>strong{font-size:30px}.tone-card>p{font-size:9px}.review-hero h2{font-size:26px}.catalog-grid .lesson-card h3{font-size:14px}}
@media(max-width:600px){body{font-size:13px}.topbar{height:64px;padding:0 14px}.topbar-actions{gap:1px}.topbar-brand{font-size:16px}.guest-profile{display:none}.icon-btn{width:34px;height:34px}.topbar .pinyin-toggle{font-size:15px}.page-content{padding:21px 16px 30px}.welcome-line{margin-bottom:18px}.welcome-line .eyebrow{font-size:8px}.welcome-line p{font-size:15px}.welcome-link{display:none}.hero{min-height:390px;padding:26px 23px;display:block;border-radius:17px}.hero-copy{width:100%;min-width:0}.hero-badge{font-size:7px;margin-bottom:16px;letter-spacing:.12em}.hero h1{font-size:29px;line-height:1.4;letter-spacing:-.9px;max-width:330px;margin-bottom:13px}.hero-copy>p{font-size:11px;line-height:1.9;max-width:225px;margin-bottom:20px;position:relative;z-index:3}.hero .btn-primary{font-size:10px;min-height:41px;padding:10px 13px}.hero-footnote{font-size:7px;max-width:190px;align-items:start;line-height:1.8}.hero-footnote>.icon{margin-top:2px;flex-shrink:0}.hero-illustration{width:48%;height:58%;right:-2%;bottom:-2px}.hero-illustration img{max-height:100%;width:100%}.hero-circle{width:160px;height:160px;left:0;top:16%}.hero-word{right:14px;top:-5px;font-size:17px;padding:7px 10px}.hero-word small{font-size:7px}.content-metrics{padding:18px 0 0;margin-bottom:28px;gap:5px}.content-metrics>div{gap:7px}.content-metrics>div+div{padding-left:9px}.content-metrics>div>.icon{display:none}.content-metrics strong{font-size:10px}.content-metrics small{font-size:8px}.section-heading{gap:8px;margin-bottom:14px}.section-heading .eyebrow{font-size:7px;margin-bottom:6px}.section-heading h2{font-size:18px}.section-heading .quiet-link{font-size:8px;gap:3px}.section-heading .quiet-link .icon{width:12px;height:12px}.home-section{margin-bottom:27px}.path-grid{grid-template-columns:1fr;gap:10px}.path-card{padding:17px;gap:14px}.path-icon{width:42px;height:44px}.path-card h3{font-size:14px}.path-card p{font-size:11px}.card-kicker{font-size:7px}.path-card>.icon{width:18px;height:18px}.home-lesson-grid{grid-template-columns:1fr;gap:13px}.home-lesson-grid .lesson-card{display:grid;grid-template-columns:109px minmax(0,1fr)}.home-lesson-grid .lesson-art{height:100%;min-height:175px;padding:13px 10px}.home-lesson-grid .art-hanzi{font-size:36px;letter-spacing:-2px;right:11px;bottom:47px;writing-mode:vertical-rl}.home-lesson-grid .art-dots{left:15px;bottom:20px;font-size:22px}.home-lesson-grid .lesson-number{font-size:6px}.home-lesson-grid .lesson-card-body{padding:15px}.home-lesson-grid .lesson-card h3{font-size:14px}.home-lesson-grid .card-meta{font-size:8px;margin-bottom:8px}.home-lesson-grid .lesson-card-body>p{font-size:10px;min-height:0;margin-bottom:12px}.home-lesson-grid .lesson-card-bottom>span{font-size:8px}.tool-grid{grid-template-columns:1fr;gap:12px}.tool-card{padding:20px;gap:19px}.tool-card h3,.tool-card strong{font-size:15px}.tool-card p,.tool-description{font-size:11px}.tool-card .quiet-link{font-size:11px}.tool-glyph{width:62px;height:65px}.right-rail{grid-template-columns:1fr 1fr;gap:13px}.right-rail .panel{padding:17px 14px}.panel-label{font-size:10px;gap:6px}.panel-label>.icon{width:14px;height:14px}.week-day b{width:17px;height:17px}.week-day .icon{width:10px;height:10px}.week-day small{font-size:6px}.week-strip{gap:2px}.streak-value strong{font-size:36px}.streak-value>div>span{font-size:8px}.streak-card>p{font-size:9px;min-height:32px;margin-bottom:12px}.streak-card>.quiet-link{font-size:9px}.goal-number{margin-top:18px}.goal-number strong{font-size:34px}.goal-number>span{font-size:10px}.goal-card>p:not(.goal-number){font-size:9px}.goal-options{flex-wrap:wrap}.goal-options button{font-size:9px;padding:5px 2px}.word-of-day{grid-column:1/-1;display:grid;grid-template-columns:90px 1fr;column-gap:16px;text-align:left;padding:20px 24px}.word-day-heading{grid-column:1/-1;margin-bottom:12px}.word-day-heading>span{font-size:8px}.daily-hanzi{font-size:44px;grid-column:1;grid-row:2/4;align-self:center}.word-of-day>.pinyin{grid-column:2;font-size:11px}.word-of-day>strong{grid-column:2;font-size:12px;margin-top:5px}.word-of-day>p{grid-column:2;max-width:none;font-size:10px;margin-top:5px}.word-audio{grid-column:2;justify-self:start;font-size:9px;padding:7px 10px}.local-note{font-size:9px}.seo-intro h2{font-size:19px}.seo-intro>p{font-size:11px}.footer{padding:24px 16px 19px;gap:18px}.footer nav{margin-left:0;gap:14px;font-size:9px}.footer>p{font-size:8px;line-height:1.9}.page-heading{padding-bottom:23px}.page-heading h1{font-size:28px;line-height:1.45;letter-spacing:-.8px}.page-heading>p{font-size:12px;line-height:1.9}.page-heading .eyebrow{font-size:8px}.breadcrumb{font-size:9px;margin-bottom:22px}.panel{padding:20px}.roadmap-intro{gap:14px;padding:19px}.intro-icon{width:36px;height:39px}.roadmap-intro h2{font-size:17px}.roadmap-intro p{font-size:11px}.roadmap-step{padding:17px 14px;gap:13px}.step-pin{width:33px;height:33px;font-size:11px;align-self:start;margin-top:4px}.step-content .card-meta{font-size:8px;gap:9px;flex-wrap:wrap}.step-content h2{font-size:16px}.step-content p{font-size:11px}.step-actions{align-items:start;flex-direction:column;gap:8px}.step-actions .quiet-link{font-size:10px}.roadmap-step>.round-link{width:28px;height:28px}.prose{font-size:12px;line-height:1.95}.prose h2{font-size:19px}.prose h3{font-size:15px}.readable{padding:24px 21px}.catalog-grid{grid-template-columns:1fr 1fr;gap:13px}.catalog-grid .lesson-art{height:119px}.catalog-grid .art-hanzi{font-size:35px;right:15px;bottom:19px;letter-spacing:-2px}.catalog-grid .lesson-card-body{padding:13px}.catalog-grid .card-meta{font-size:7px;flex-wrap:wrap;gap:4px}.catalog-grid .lesson-card h3{font-size:13px;line-height:1.5}.catalog-grid .lesson-card-body>p{font-size:10px;min-height:54px}.catalog-grid .lesson-card-bottom>span{font-size:8px}.catalog-grid .lesson-card-bottom{gap:4px;align-items:center}.catalog-grid .round-link{width:24px;height:24px}.filter-row{gap:7px}.filter-chip{font-size:10px;padding:7px 11px}.lesson-overview{padding:21px;gap:20px;flex-direction:column;align-items:start}.lesson-big-hanzi{font-size:40px;line-height:1.3}.lesson-overview p{font-size:12px}.lesson-tags{font-size:9px;gap:11px}.article-section>h2>span{font-size:18px}.vocab-table td{padding:10px 12px;font-size:11px}.vocab-table th{padding:11px 12px;font-size:9px}.vocab-table .table-hanzi{font-size:22px}.vocab-table .pinyin{font-size:11px}.vocab-table td:last-child{padding:8px}.vocab-table .icon-btn{width:28px;height:28px}.caption{font-size:9px}.dialogue-panel{padding:6px 16px}.dialogue-line{gap:10px}.dialogue-line .dialogue-hanzi{font-size:19px}.dialogue-line .pinyin{font-size:11px}.dialogue-line>div>p{font-size:11px}.speaker-avatar{min-width:25px;width:25px;height:25px;font-size:8px}.dialogue-line>.icon-btn{width:28px;height:28px}.lesson-note{padding:16px 18px}.lesson-note h3{font-size:13px}.lesson-note p{font-size:11px}.practice-banner{padding:24px;flex-direction:column;align-items:start;gap:18px}.practice-banner h2{font-size:20px}.lesson-aside{grid-template-columns:1fr}.lesson-aside .related{grid-column:1}.lesson-aside .related-item{width:100%}.lesson-cta .btn{font-size:12px}.article-byline{font-size:9px}.pinyin-notice{padding:14px;gap:8px}.pinyin-notice>p{font-size:10px}.anchor-tabs{gap:8px}.anchor-tabs>a{padding:8px 13px;font-size:11px}.tone-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.tone-card{padding:18px 12px}.tone-card>p{font-size:11px;min-height:0}.tone-card:last-child{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;column-gap:15px}.tone-card:last-child>span{grid-column:1/-1}.tone-card:last-child>p{grid-column:1/-1}.tone-card:last-child>.icon{grid-column:1/-1;justify-self:center}.tone-card>strong{font-size:34px}.tone-grid.compact{grid-template-columns:repeat(3,minmax(0,1fr))}.tone-grid.compact .tone-card{padding:14px 8px}.tone-grid.compact .tone-card:last-child{display:flex;grid-column:auto}.tone-grid.compact .tone-card>strong{font-size:26px}.tone-grid.compact .tone-card>b{font-size:25px}.tone-grid.compact .tone-card>span,.tone-grid.compact .tone-card>small{font-size:9px}.sound-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.sound-tile{min-height:112px;padding:12px 8px}.sound-tile>strong{font-size:23px}.sound-tile>.pinyin{font-size:9px}.sound-tile>small{font-size:16px}.sound-tile>.icon{width:11px;height:11px;top:7px;right:7px}.word-grid{grid-template-columns:1fr 1fr;gap:12px}.vocab-mini{min-height:154px;padding:20px 17px}.vocab-mini>span[lang]{font-size:29px}.vocab-mini>strong{font-size:11px}.vocab-mini>.pinyin{font-size:10px}.vocab-search{padding:10px 13px;margin-bottom:25px}.vocab-search>input{font-size:11px}.review-hero{grid-template-columns:1fr;gap:29px;padding:29px 25px}.review-art{max-width:190px;min-height:210px;width:65%;justify-self:center}.review-art>span:first-child{font-size:51px}.review-art>span:nth-child(2){font-size:15px}.review-hero h2{font-size:24px}.review-hero p{font-size:12px}.review-topic-grid{grid-template-columns:1fr 1fr;gap:13px}.review-topic{padding:20px 17px}.review-topic>span{font-size:30px}.review-topic>strong{font-size:12px}.review-topic>small{font-size:9px}.review-topic>.icon{bottom:20px;right:17px;width:15px;height:15px}.progress-stats{grid-template-columns:1fr 1fr;gap:12px}.progress-stats>.panel{padding:19px}.progress-stats strong{font-size:35px}.progress-stats span{font-size:10px}.progress-lesson{padding:17px;gap:12px}.progress-lesson h3{font-size:13px}.progress-lesson .btn{font-size:9px;padding:7px 9px;white-space:nowrap}.progress-lesson .btn .icon{display:none}.dialog-shell{padding:21px}.dialog-title{font-size:20px}.dialog-header{gap:12px;margin-bottom:15px}.dialog-kicker{font-size:8px}.dialog-close{width:28px;height:28px;font-size:20px}.lesson-body{min-height:260px}.word-stage{padding:19px 15px}.word-hanzi{font-size:59px}.word-stage .pinyin{font-size:19px}.word-meaning{font-size:18px}.quiz-prompt{font-size:18px;margin:18px 0}.quiz-options{grid-template-columns:1fr;gap:9px;margin:15px 0}.quiz-option{padding:13px 15px;font-size:13px;min-height:48px}.quiz-feedback{padding:14px;font-size:11px}.dialog-footer{margin-top:19px;padding-top:16px;gap:8px;flex-wrap:wrap}.dialog-footer .btn{font-size:11px;min-height:40px;padding:9px 13px}.completion-view{padding:12px 0}.completion-view h2{font-size:24px}.completion-view>p{font-size:12px}.completion-stats{gap:10px}.completion-stats>div{padding:12px 14px;min-width:80px}.completion-stats strong{font-size:23px}.flashcard{min-height:255px;padding:21px}.flashcard .word-hanzi{font-size:58px}.flashcard .pinyin{font-size:19px}.flashcard .word-meaning{font-size:20px}.flashcard-navigation{gap:8px}.flashcard-navigation .btn{font-size:10px;padding:8px 10px}.search-input{font-size:12px}.search-result strong{font-size:13px}.search-result small{font-size:10px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* Comfortable reading sizes across the learning UI. */
.nav-item{font-size:13px}.hero-copy>p{font-size:13px;max-width:345px}.hero .btn-primary{font-size:12px}.hero-footnote{font-size:10px}.hero-badge{font-size:9px}.welcome-link{font-size:11px}.topbar-greeting{font-size:12px}.content-metrics strong{font-size:12px}.content-metrics small{font-size:10px}.path-card p{font-size:12px}.card-kicker{font-size:9px}.lesson-card-body>p{font-size:12px}.card-meta{font-size:10px}.lesson-card-bottom>span{font-size:10px}.tool-card p,.tool-description{font-size:12px}.seo-intro>p{font-size:13px}.seo-intro details{font-size:12px}.sidebar-tip strong{font-size:12px}.sidebar-tip p{font-size:11px}.sidebar-tip a{font-size:10px}.sidebar-bottom>span{font-size:9px}.streak-card>p,.goal-card>p:not(.goal-number){font-size:11px}.week-day small{font-size:9px}.word-of-day>p{font-size:11px}.footer>p{font-size:10px}.footer nav{font-size:11px}.footer>div>span{font-size:11px}
@media(max-width:600px){.hero-copy>p{font-size:12px;max-width:245px}.hero-footnote{font-size:9px;max-width:205px}.hero .btn-primary{font-size:12px}.hero-badge{font-size:8px}.content-metrics strong{font-size:11px}.content-metrics small{font-size:9px}.path-card p{font-size:12px}.card-kicker{font-size:8px}.home-lesson-grid .lesson-card-body>p{font-size:12px}.home-lesson-grid .card-meta{font-size:10px}.home-lesson-grid .lesson-card-bottom>span{font-size:10px}.week-day small{font-size:8px}.streak-card>p,.goal-card>p:not(.goal-number){font-size:10px}.seo-intro>p{font-size:13px}.prose{font-size:14px}.page-heading>p{font-size:14px}.lesson-note p{font-size:13px}.dialogue-line>div>p{font-size:13px}.dialogue-line .dialogue-hanzi{font-size:22px}.vocab-table td{font-size:12px}.catalog-grid .lesson-card-body>p{font-size:12px}.catalog-grid .lesson-card h3{font-size:14px}.vocab-search>input{font-size:13px}.review-hero p{font-size:14px}.lesson-overview p{font-size:14px}}

body.dialog-open{overflow:hidden}.sidebar-close{position:absolute;right:10px;top:8px;font-size:25px}
@media(max-width:820px){body.menu-open{overflow:hidden}}

.audio-feedback:empty{display:none}.audio-feedback{margin:13px 0;padding:12px 15px;background:#fff4e4;color:#815c2c;border:1px solid #efddbe;border-radius:10px;font-size:12px;line-height:1.8}.audio-transcript{margin:12px 0;font-size:12px;color:var(--muted)}.audio-transcript summary{cursor:pointer}.audio-transcript p{font-size:24px;line-height:1.6;color:var(--ink);margin:10px 0 0}.audio-transcript summary:hover{color:var(--jade)}

/* Personal learning hub and device-local notebook. */
.learning-hub{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:16px;margin-bottom:34px}
.learning-hub>.panel{min-width:0;padding:22px}
.resume-panel{background:linear-gradient(135deg,var(--paper),var(--soft));display:flex;flex-direction:column}
.resume-heading{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.resume-heading .panel-label{font-size:12px}
.resume-heading .panel-label>.icon{color:var(--jade)}
.resume-status{font-size:10px;font-weight:600;color:var(--text);background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:3px 8px;line-height:1.6}
.resume-panel h2{font-size:20px;line-height:1.4;letter-spacing:-.4px;margin:0 0 9px}
.resume-panel>p{font-size:12px;color:var(--muted);line-height:1.8;margin:0 0 18px;max-width:600px}
.resume-track{height:6px;border-radius:8px;background:var(--line);overflow:hidden;margin-top:auto;margin-bottom:18px}
.resume-track>span{display:block;height:100%;background:var(--jade);border-radius:inherit;transition:width .25s ease}
.resume-actions{display:flex;align-items:center;flex-wrap:wrap;gap:13px 18px}
.resume-actions .btn{font-size:12px;padding:10px 14px;min-height:42px}
.resume-actions .quiet-link{font-size:11px}
.learning-summary{display:flex;flex-direction:column}
.learning-summary>.panel-label{font-size:12px}
.learning-summary>.panel-label>.icon{color:var(--jade)}
.learning-summary-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px 22px;margin:20px 0}
.learning-summary-grid>div{min-width:0}
.learning-summary-grid dt{font-size:11px;color:var(--muted);line-height:1.5;margin-bottom:3px}
.learning-summary-grid dd{margin:0;font-size:25px;font-weight:700;color:var(--ink);letter-spacing:-.8px;line-height:1.3;font-variant-numeric:tabular-nums}
.learning-summary-footer{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:9px 12px;border-top:1px solid var(--line);padding-top:13px;margin-top:auto}
.learning-summary-footer .quiet-link{font-size:10px;gap:5px}
.learning-summary-footer b{font-weight:750}
.learning-summary-footer .icon{width:14px;height:14px}
.progress-resume{margin-bottom:22px}
.lesson-result{font-size:11px;line-height:1.7;color:var(--muted);margin:6px 0 0}
.lesson-result:empty{display:none}
.lesson-cta .lesson-result{font-size:11px;margin:8px 0 0}
[data-lesson-status].is-in-progress{color:var(--jade)}

/* Saved words keep the same card language as the public vocabulary. */
.vocabulary-tools{display:flex;align-items:center;gap:16px 24px;flex-wrap:wrap;margin-bottom:30px}
.vocabulary-tools .vocab-search{flex:1 1 320px;margin:0}
.vocabulary-tools>.quiet-link{margin-right:0;font-size:12px}
.vocab-mini{padding-top:54px}
.vocab-card-tools{position:absolute;top:9px;right:9px;display:flex;align-items:center;gap:3px}
.vocab-card-tools .icon-btn{width:34px;height:34px}
.vocab-card-tools .icon{width:18px;height:18px}
.vocab-mini>span[lang]{padding-right:0;overflow-wrap:anywhere}
.vocab-mini.is-saved{border-color:#b5d3c4}
.save-word[aria-pressed=true]{color:var(--jade);background:var(--soft);border-color:#c5dbce}
.save-word[aria-pressed=true] .icon{fill:#c9e5d4}
.word-actions{display:flex;align-items:center;justify-content:flex-end;gap:3px}
.word-actions .icon-btn{width:34px;height:34px}
.notebook-toolbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:18px;margin-bottom:18px}
.notebook-count{display:flex;align-items:center;gap:14px;min-width:0}
.notebook-emblem{display:flex;align-items:center;justify-content:center;width:45px;height:45px;flex-shrink:0;border-radius:14px;background:var(--soft);color:var(--jade)}
.notebook-emblem .icon{width:24px;height:24px}
.notebook-count strong{display:block;font-size:18px;color:var(--ink);line-height:1.5}
.notebook-count p{font-size:12px;color:var(--muted);margin:3px 0 0;line-height:1.7}
.notebook-toolbar>.btn{font-size:12px;min-height:42px}
.notebook-search{max-width:none;margin:25px 0 20px}
.notebook-empty{background:var(--paper);border:1px dashed #bed3c7;border-radius:var(--radius);padding:38px 28px;text-align:center;font-size:14px;line-height:1.9;color:var(--muted);margin:0 0 22px}
.notebook-grid:empty{display:none}
.notebook-source{display:flex;align-items:center;justify-content:space-between;gap:9px;margin-top:auto;padding-top:17px;font-size:10px;line-height:1.7;color:var(--jade)}
.notebook-source .icon{width:14px;height:14px;flex-shrink:0}
.notebook-source:hover{text-decoration:underline}
.notebook-local-note{display:flex;align-items:flex-start;gap:9px;font-size:11px;line-height:1.8;color:var(--muted);margin:27px 0 0;max-width:730px}
.notebook-local-note>.icon{width:17px;height:17px;flex-shrink:0;margin-top:1px}
.review-personal{margin-bottom:33px}
.review-collections{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.review-collection{display:flex;align-items:center;gap:14px;text-align:left;padding:21px;min-width:0;transition:border-color .2s,background .2s}
.review-collection:hover{border-color:#aecdbc;background:var(--soft)}
.collection-icon{display:flex;align-items:center;justify-content:center;width:39px;height:39px;flex-shrink:0;border-radius:12px;background:var(--soft);color:var(--jade)}
.collection-copy{display:flex;flex-direction:column;flex:1;min-width:0}
.collection-copy>strong{font-size:14px;line-height:1.5;color:var(--ink)}
.collection-copy>small{font-size:11px;line-height:1.7;color:var(--muted);margin-top:4px}
.collection-count{font-size:26px;color:var(--ink);font-weight:700;line-height:1.3;font-variant-numeric:tabular-nums}
.review-collection>.icon{width:16px;height:16px;flex-shrink:0;color:var(--jade)}

html[data-theme=dark] .resume-heading .panel-label>.icon,html[data-theme=dark] .learning-summary>.panel-label>.icon,html[data-theme=dark] .learning-hub .quiet-link,html[data-theme=dark] .progress-resume .quiet-link,html[data-theme=dark] .notebook-source,html[data-theme=dark] .vocabulary-tools>.quiet-link,html[data-theme=dark] .notebook-emblem,html[data-theme=dark] .collection-icon,html[data-theme=dark] .review-collection>.icon,html[data-theme=dark] .review-personal .quiet-link,html[data-theme=dark] [data-lesson-status].is-in-progress{color:#8bd6bc}
html[data-theme=dark] .save-word[aria-pressed=true]{background:#284b38;color:#a8dcc1;border-color:#436b53}
html[data-theme=dark] .save-word[aria-pressed=true] .icon{fill:#345f46}
html[data-theme=dark] .vocab-mini.is-saved{border-color:#42654e}
html[data-theme=dark] .notebook-empty{border-color:#42654e}
html[data-theme=dark] .review-collection:hover{border-color:#557d60}

@media(max-width:1270px){
 .learning-hub{grid-template-columns:minmax(0,1fr);gap:13px}
 .learning-summary-grid{grid-template-columns:repeat(4,minmax(0,1fr));margin:17px 0}
 .learning-summary-footer .quiet-link{font-size:11px}
 .resume-heading .panel-label,.learning-summary>.panel-label{font-size:13px}
}
@media(max-width:720px){
 .review-collections{grid-template-columns:minmax(0,1fr);gap:12px}
 .review-collection{padding:19px 20px}
}
@media(max-width:600px){
 .learning-hub{margin-bottom:29px}
 .learning-hub>.panel,.resume-panel{padding:20px}
 .resume-heading{margin-bottom:14px}
 .resume-panel h2{font-size:20px}
 .resume-panel>p{font-size:13px;line-height:1.8}
 .resume-actions{gap:14px}
 .resume-actions .btn{font-size:12px;min-height:44px}
 .resume-actions .quiet-link{font-size:12px}
 .learning-summary-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:17px 24px;margin:19px 0}
 .learning-summary-grid dt{font-size:12px}
 .learning-summary-grid dd{font-size:26px}
 .learning-summary-footer .quiet-link{font-size:11px}
 .vocab-mini{padding:54px 17px 20px}
 .vocab-mini>.pinyin,.vocab-mini>strong{font-size:12px}
 .vocab-card-tools{right:7px;top:7px}
 .vocab-card-tools .icon-btn{width:36px;height:36px}
 .vocabulary-tools{gap:15px;margin-bottom:24px}
 .vocabulary-tools .vocab-search{flex-basis:100%}
 .word-actions .icon-btn{width:34px;height:36px}
 .notebook-toolbar{padding:20px;gap:17px}
 .notebook-count{gap:12px}
 .notebook-count strong{font-size:17px}
 .notebook-count p{font-size:12px}
 .notebook-toolbar>.btn{width:100%;min-height:44px}
 .notebook-search{margin-top:22px}
 .notebook-empty{padding:29px 22px;font-size:13px}
 .notebook-source{font-size:11px;padding-top:14px}
 .notebook-local-note{font-size:12px}
 .review-collection{gap:12px;padding:18px}
 .collection-copy>small{font-size:12px}
 .collection-count{font-size:25px}
 .lesson-result{font-size:11px}
 .progress-lesson{align-items:flex-start;flex-wrap:wrap}
}

/* A suggested starting point and a clear daily review action. */
.learning-next-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:-8px 0 34px}
.learning-next-grid>.panel{min-width:0;padding:22px}
.placement-invite{display:flex;align-items:flex-start;gap:15px;background:linear-gradient(135deg,var(--paper),var(--soft))}
.placement-invite-mark,.placement-guide-mark{display:flex;align-items:center;justify-content:center;flex-shrink:0;width:43px;height:43px;border-radius:14px;background:var(--soft);color:var(--jade)}
.placement-invite-mark>.icon{width:25px;height:25px}
.placement-invite .eyebrow{font-size:9px;margin:1px 0 7px}
.placement-invite h2{font-size:18px;letter-spacing:-.4px;margin-bottom:9px;line-height:1.4}
.placement-invite p{font-size:12px;line-height:1.8;color:var(--muted);margin-bottom:13px}
.placement-invite .quiet-link{font-size:12px}
.due-review-panel{display:flex;flex-direction:column}
.due-review-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.due-review-heading .panel-label{font-size:13px}
.due-review-heading .icon{color:var(--jade)}
.due-review-count{display:flex;align-items:baseline;gap:5px;font-size:11px;color:var(--muted);white-space:nowrap}
.due-review-count>b{font-size:26px;line-height:1.1;letter-spacing:-.7px;color:var(--ink);font-variant-numeric:tabular-nums}
.due-review-panel>p{font-size:12px;line-height:1.8;color:var(--muted);margin:0 0 15px}
.due-review-actions{display:flex;align-items:center;gap:12px 15px;flex-wrap:wrap;margin-top:auto}
.due-review-actions .btn{min-height:42px;padding:10px 13px;font-size:12px}
.due-review-actions [data-review-next]{font-size:11px;color:var(--muted);line-height:1.7;flex:1 1 130px}
.due-review-actions [data-review-next]:empty{display:none}
.review-due-feature{margin-bottom:25px}
.review-due-feature .due-review-panel{padding:24px 28px}
.review-due-feature .due-review-panel>p{max-width:720px;font-size:14px}
.review-due-feature .due-review-heading .panel-label{font-size:17px}
.review-due-feature .due-review-count>b{font-size:34px}
.review-due-feature .due-review-actions [data-review-next]{font-size:12px}

/* On-page introductory check: readable prompts and actionable recommendations. */
.placement-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;align-items:start;gap:25px;margin-bottom:32px}
.placement-host{min-width:0;padding:0;overflow:hidden}
.placement-shell{min-width:0;padding:32px;scroll-margin-top:100px;min-height:340px}
.placement-shell>h2{font-size:26px;line-height:1.45;margin:10px 0 16px}
.placement-shell>p{font-size:14px;line-height:1.9;max-width:680px}
.placement-kicker{display:block;font-size:10px;font-weight:700;line-height:1.7;letter-spacing:.11em;color:var(--jade);margin-bottom:12px}
.placement-start-facts{display:flex;align-items:center;flex-wrap:wrap;gap:12px 22px;margin:23px 0 27px;padding:17px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.placement-start-facts>span{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.placement-start-facts .icon{width:17px;height:17px;color:var(--jade)}
.placement-local-note{font-size:12px!important;line-height:1.8!important;color:var(--muted);margin:20px 0 0!important}
.placement-local-note a{color:var(--jade);text-decoration:underline;text-underline-offset:3px}
.placement-guide{padding:27px;background:linear-gradient(145deg,var(--paper),var(--soft))}
.placement-guide-mark{margin-bottom:19px;width:46px;height:46px}
.placement-guide h2{font-size:21px;line-height:1.4;margin:0 0 12px}
.placement-guide p,.placement-guide li{font-size:13px;line-height:1.9}
.placement-guide ol{padding-left:21px;margin:18px 0}
.placement-guide li{padding-left:4px;margin-bottom:7px}
.placement-guide-note{padding-top:17px;border-top:1px solid var(--line);color:var(--muted);font-size:12px!important;margin:0}
.placement-progress{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 16px;font-size:12px;line-height:1.6;color:var(--muted);margin:0 0 12px}
.placement-progress strong{color:var(--ink);font-weight:650}
.placement-track{height:7px;border-radius:9px;background:var(--line);overflow:hidden;margin:0 0 25px}
.placement-track>span{display:block;height:100%;border-radius:inherit;background:var(--jade);transition:width .2s ease}
.placement-shell .placement-question{font-size:23px;line-height:1.6;margin:17px 0 23px;overflow-wrap:anywhere}
.placement-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:0 0 22px}
.placement-option{width:100%;min-height:65px;border:1px solid var(--line);border-radius:12px;background:var(--paper);text-align:left;padding:17px 19px;color:var(--text);font-size:15px;line-height:1.7;overflow-wrap:anywhere;transition:border-color .15s,background .15s}
.placement-option:hover:not(:disabled){background:var(--soft);border-color:#accfbb}
.placement-option.is-selected,.placement-option[aria-pressed=true]{border-color:var(--jade);background:var(--soft);box-shadow:inset 0 0 0 1px var(--jade)}
.placement-option.is-correct{background:#e7f4e9;border-color:#65a87a;color:#286438;opacity:1;box-shadow:none}
.placement-option.is-wrong{background:#fff0e9;border-color:#d99d82;color:#92482f;opacity:1;box-shadow:none}
.placement-feedback{padding:17px 20px;border:1px solid var(--line);border-radius:12px;background:var(--soft);font-size:13px;line-height:1.9;margin:0 0 22px}
.placement-feedback strong{display:block;font-size:14px;line-height:1.7;margin-bottom:4px}
.placement-feedback p{margin:4px 0 0}
.placement-feedback.is-correct{background:#edf7ee;border-color:#d4e7d6;color:#356b47}
.placement-feedback.is-wrong{background:#fff5ec;border-color:#edcfba;color:#8c542f}
.placement-actions{display:flex;align-items:center;justify-content:space-between;gap:12px 16px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:21px;margin-top:24px}
.placement-actions .btn{min-height:46px;font-size:13px}
.placement-hint{font-size:12px;line-height:1.8;color:var(--muted);margin:12px 0 0}
.placement-results>h2{font-size:26px;line-height:1.4;margin:8px 0 16px}
.placement-results>p{font-size:14px;line-height:1.9}
.placement-score{display:flex;align-items:baseline;flex-wrap:wrap;gap:12px;background:var(--soft);border:1px solid var(--line);border-radius:15px;padding:20px 24px;margin:22px 0}
.placement-score>strong{font-size:46px;line-height:1.2;font-weight:750;letter-spacing:-1.5px;color:var(--jade);font-variant-numeric:tabular-nums}
.placement-score>small,.placement-score>span{font-size:13px;line-height:1.7;color:var(--text)}
.placement-group-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:23px 0 28px}
.placement-group{border:1px solid var(--line);border-radius:12px;padding:16px;min-width:0;background:var(--bg)}
.placement-group>strong{display:block;font-size:13px;line-height:1.6;color:var(--ink)}
.placement-group>p{font-size:12px;line-height:1.7;color:var(--muted);margin:7px 0 0}
.placement-group>small{display:block;font-size:12px;line-height:1.7;color:var(--muted);margin:7px 0 0}
.placement-recommendations{display:grid;gap:11px;padding:0;margin:18px 0 0;list-style:none}
.placement-recommendation{display:flex;align-items:flex-start;justify-content:space-between;gap:8px 15px;flex-wrap:wrap;min-width:0;border:1px solid var(--line);border-radius:12px;padding:17px 19px;background:var(--paper);transition:background .15s,border-color .15s}
.placement-recommendation:hover{border-color:#accfbb;background:var(--soft)}
.placement-recommendation>strong{font-size:14px;line-height:1.7;color:var(--jade)}
.placement-recommendation>small{font-size:12px;line-height:1.8;color:var(--muted)}
.placement-explainer{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:25px;margin-top:32px}
.placement-explainer>.panel{min-width:0;padding:28px}
.placement-explainer h2{font-size:23px}
.placement-explainer p{font-size:14px;line-height:1.9}
.placement-topic-links{list-style:none;padding:0!important;margin:19px 0 0!important;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 20px}
.placement-topic-links li{padding:0;margin:0!important;min-width:0}
.placement-topic-links a{display:flex;align-items:center;justify-content:space-between;gap:9px;font-size:12px;line-height:1.7;color:var(--jade);padding:7px 0}
.placement-topic-links .icon{width:14px;height:14px}
.placement-topic-links a:hover{text-decoration:underline;text-underline-offset:4px}
html[data-theme=dark] .placement-invite-mark,html[data-theme=dark] .placement-guide-mark,html[data-theme=dark] .placement-invite .eyebrow,html[data-theme=dark] .placement-invite .quiet-link,html[data-theme=dark] .due-review-heading .icon,html[data-theme=dark] .placement-kicker,html[data-theme=dark] .placement-start-facts .icon,html[data-theme=dark] .placement-local-note a,html[data-theme=dark] .placement-score>strong,html[data-theme=dark] .placement-recommendation>strong,html[data-theme=dark] .placement-topic-links a,html[data-theme=dark] .placement-explainer .quiet-link{color:#8bd6bc}
html[data-theme=dark] .placement-option.is-selected,html[data-theme=dark] .placement-option[aria-pressed=true]{border-color:#7bc4a5;box-shadow:inset 0 0 0 1px #7bc4a5}
html[data-theme=dark] .placement-option.is-correct,html[data-theme=dark] .placement-feedback.is-correct{background:#234a2d;color:#b5e9bf;border-color:#43784e;box-shadow:none}
html[data-theme=dark] .placement-option.is-wrong,html[data-theme=dark] .placement-feedback.is-wrong{background:#4c3023;color:#f0c4a5;border-color:#8d5f42;box-shadow:none}
html[data-theme=dark] .placement-recommendation:hover,html[data-theme=dark] .placement-option:hover:not(:disabled){border-color:#557d60}
@media(max-width:1270px){
 .learning-next-grid{grid-template-columns:minmax(0,1fr);gap:13px}
 .placement-layout{grid-template-columns:minmax(0,1fr) 270px;gap:20px}
 .placement-shell{padding:27px}
 .placement-guide{padding:23px}
 .placement-group-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:1000px){
 .placement-layout{grid-template-columns:minmax(0,1fr)}
 .placement-guide{padding:24px}
 .placement-explainer{grid-template-columns:minmax(0,1fr);gap:18px}
}
@media(max-width:600px){
 .learning-next-grid{margin:-6px 0 29px}
 .learning-next-grid>.panel{padding:20px}
 .placement-invite{gap:13px}
 .placement-invite-mark{width:37px;height:37px;border-radius:12px}
 .placement-invite-mark>.icon{width:22px;height:22px}
 .placement-invite h2{font-size:18px}
 .placement-invite p{font-size:13px}
 .due-review-heading .panel-label{font-size:13px}
 .due-review-panel>p{font-size:13px}
 .due-review-actions .btn{min-height:44px}
 .due-review-actions [data-review-next]{font-size:12px;flex-basis:100%}
 .review-due-feature .due-review-panel{padding:22px}
 .review-due-feature .due-review-heading .panel-label{font-size:16px}
 .review-due-feature .due-review-panel>p{font-size:13px}
 .placement-shell{padding:22px;min-height:330px;scroll-margin-top:88px}
 .placement-shell>h2,.placement-results>h2{font-size:23px}
 .placement-shell>p,.placement-results>p{font-size:14px}
 .placement-start-facts{gap:12px 17px;margin:20px 0 24px;padding:17px 0}
 .placement-start-facts>span{font-size:12px}
 .placement-start-facts>span:last-child{flex-basis:100%}
 .placement-shell>.btn{width:100%}
 .placement-progress{font-size:12px}
 .placement-track{margin-bottom:21px}
 .placement-shell .placement-question{font-size:20px;line-height:1.6;margin:17px 0 20px}
 .placement-options{grid-template-columns:minmax(0,1fr);gap:10px}
 .placement-option{font-size:15px;min-height:54px;padding:14px 16px}
 .placement-feedback{padding:16px;font-size:13px}
 .placement-actions{gap:10px;align-items:stretch}
 .placement-actions .btn{flex:1 1 120px;padding:11px 14px;font-size:12px;min-height:44px}
 .placement-actions .placement-hint{flex-basis:100%}
 .placement-score{padding:19px;gap:8px 13px}
 .placement-score>strong{font-size:40px}
 .placement-score>small,.placement-score>span{font-size:12px}
 .placement-group-grid{gap:10px;margin:21px 0 24px}
 .placement-group{padding:14px}
 .placement-group>strong{font-size:12px}
 .placement-group>p{font-size:12px}
 .placement-recommendation{padding:15px 17px}
 .placement-recommendation>strong{font-size:14px}
 .placement-recommendation>small{flex-basis:100%;font-size:12px}
 .placement-explainer{margin-top:25px}
 .placement-explainer>.panel{padding:23px}
 .placement-explainer h2{font-size:22px}
 .placement-topic-links{grid-template-columns:minmax(0,1fr);gap:5px}
 .placement-topic-links a{font-size:13px}
}