:root{font-family:Inter,"Segoe UI",Arial,system-ui,sans-serif;color:#192722;background:#f5f5f1;font-synthesis:none;--ink:#192722;--sub:#62716a;--muted:#7a8980;--line:#dfe4dc;--surface:#fff;--background:#f6f7f3;--soft:#eff3ed;--green:#264e40;--accent:#315e4c;--nav:#192e27;--nav-sub:#9eafa5;--focus:#136c94;--warning-bg:#f5f1e5;--warning-ink:#715a36}
:root[data-theme=dark]{color-scheme:dark;--ink:#e9efea;--sub:#b1c0b5;--muted:#91a398;--line:#3c4b42;--surface:#202d27;--background:#14221d;--soft:#263830;--green:#8cc6a3;--accent:#a4d8b7;--nav:#0e1c17;--nav-sub:#a3b5a9;--focus:#86c5e5;--warning-bg:#40392b;--warning-ink:#f3d9a2}
*{box-sizing:border-box}html{scroll-behavior:auto}body{margin:0;min-width:0;line-height:1.5;background:var(--background);color:var(--ink)}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}button:not(:disabled):active{transform:translateY(1px)}a{color:inherit}h1,h2,h3,p{margin-top:0}h1,h2,h3{letter-spacing:-.034em}h1{font-size:clamp(35px,4.1vw,51px);line-height:1.1;font-weight:680;margin-bottom:11px}h2{font-size:24px;font-weight:650;line-height:1.25}h3{font-size:18px;font-weight:650}p{overflow-wrap:break-word} :focus-visible{outline:3px solid var(--focus)!important;outline-offset:3px} :where([hidden]){display:none!important}.skip-link{position:fixed;z-index:100;top:-85px;left:15px;padding:10px 14px;color:#101d17;background:#fff;border:2px solid #137ba0}.skip-link:focus{top:10px}
.app-frame{display:grid;grid-template-columns:245px minmax(0,1fr);min-height:100dvh}.sidebar{background:var(--nav);color:#ecf4ed;display:flex;flex-direction:column;padding:31px 19px 26px;position:sticky;top:0;height:100dvh;border-right:1px solid #173126}.brand{text-decoration:none;display:flex;align-items:center;gap:15px;padding:5px 10px 36px;border-bottom:1px solid #345046}.brand-glyph{display:grid;place-items:center;flex:none;width:46px;height:46px;background:#d7e8d8;color:#1e4534;font-size:31px;font-family:"Noto Sans CJK SC","Microsoft Yahei","PingFang SC",sans-serif}.brand strong{font-size:13px;display:block;letter-spacing:.11em;line-height:1.28}.brand small{color:var(--nav-sub);display:block;font-size:11px;margin-top:6px;white-space:nowrap}.nav-heading{font-size:10px;letter-spacing:.13em;font-weight:730;color:#829b8d;margin:28px 13px 11px}.secondary-heading{margin-top:40px}.desktop-nav{display:grid;gap:5px}.desktop-nav a{display:flex;align-items:center;gap:17px;padding:12px 14px;font-size:14px;text-decoration:none;border-radius:3px;color:#becfc3;font-weight:550}.desktop-nav a>span{font-size:20px;line-height:1;width:20px;text-align:center}.desktop-nav a:hover,.desktop-nav a[aria-current=page]{background:#304c3e;color:#fff}.desktop-nav a[aria-current=page]{box-shadow:inset 3px 0 0 #b8e4c6}.side-bottom{margin-top:auto;display:flex;gap:11px;padding:23px 4px 0;border-top:1px solid #345046}.side-dot{width:8px;height:8px;flex:none;background:#93c7a1;margin-top:4px;border-radius:50%}.side-bottom strong{display:block;font-size:12px;font-weight:650}.side-bottom small{display:block;color:#a3b6a9;font-size:11px;line-height:1.6;margin-top:3px}
.workspace{min-width:0;display:flex;flex-direction:column}.topbar{min-height:66px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 clamp(24px,4vw,65px);background:var(--surface)}.top-caption{font-size:11px;font-weight:750;color:var(--sub);letter-spacing:.11em}.top-actions{display:flex;align-items:center;gap:18px}.status-chip{font-size:11px;color:var(--sub);border:1px solid var(--line);padding:6px 10px;white-space:nowrap}.top-link{background:none;border:0;color:var(--ink);font-size:12px;text-decoration:underline;text-underline-offset:3px}.workspace main{width:min(1320px,100%);margin:0 auto;padding:40px clamp(24px,4vw,65px) 85px;flex:1;outline:none}.workspace footer{padding:17px clamp(24px,4vw,65px);border-top:1px solid var(--line);color:var(--muted);font-size:11px}.mobile-nav{display:none}.alert:empty{display:none}.alert{padding:12px 16px;margin-bottom:22px;background:var(--soft);border-left:3px solid var(--accent);color:var(--ink);font-size:13px}.alert.error{background:#f9e9e7;color:#8e342d;border-color:#bd4b3e}
.section-intro{margin-bottom:27px}.section-intro>p:last-child{color:var(--sub);font-size:16px;max-width:720px;margin-bottom:0}.eyebrow{font-size:10px!important;letter-spacing:.12em;color:var(--accent);font-weight:800;margin:0 0 11px!important;text-transform:uppercase}.permission-note{background:var(--warning-bg);border-left:3px solid #a78955;padding:13px 19px;margin-bottom:24px;color:var(--warning-ink)}.permission-note strong{font-size:13px}.permission-note p{font-size:12px;margin:4px 0 0;max-width:1000px}.button,.text-button{font-size:13px;font-weight:700;min-height:43px;border:1px solid transparent;padding:10px 17px;border-radius:2px;line-height:1.25;white-space:normal}.button.primary{background:var(--green);color:#fff}.button.primary:hover{filter:brightness(1.12)}:root[data-theme=dark] .button.primary{color:#11271b}.button.dark{background:var(--nav);color:#fff}.button.outline{background:transparent;border-color:var(--line);color:var(--ink)}.button.outline:hover{background:var(--soft)}.button.small{padding:8px 13px;min-height:36px;font-size:12px}.button.mini{min-height:33px;padding:6px 12px;font-size:12px}.button.danger{background:transparent;border-color:#aa504c;color:#b44d45}.button-row{display:flex;flex-wrap:wrap;gap:9px;align-items:center}.text-button{background:none;color:var(--accent);padding:5px 0;border:0;min-height:32px;text-decoration:underline;text-underline-offset:3px}.inline-link{font-size:13px;color:var(--accent);text-decoration:underline;text-underline-offset:3px;font-weight:650}.muted,.helper-text{color:var(--sub);font-size:13px}.study-note{font-size:12px;color:var(--sub);margin-top:15px}.loading{padding:70px 0;text-align:center;color:var(--sub)}.loading-glyph{font-size:100px;display:block;color:var(--green)}
.today-top{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(270px,.9fr);gap:17px}.hero{background:#e7efe7;border:1px solid #d3dfd3;padding:32px 34px;min-height:280px}.hero .eyebrow{color:#557a66}.hero-layout{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(115px,.6fr);gap:16px;align-items:center}.hero h2{font-size:clamp(25px,3vw,36px);max-width:410px;line-height:1.15;color:#1a3127;margin:0 0 16px}.hero p:not(.eyebrow){font-size:14px;max-width:410px;color:#5d6e60;margin:0 0 24px}.hero-hanzi{font-family:"Noto Serif CJK SC","Songti SC","Noto Sans CJK SC",serif;text-align:center;font-size:clamp(88px,9vw,147px);line-height:1.2;color:#244b39}.hero-hanzi span{display:block;font:500 16px/1.5 system-ui,sans-serif;color:#5c7c66;letter-spacing:.05em}.due-panel{border:1px solid var(--line);padding:30px;background:var(--surface)}.due-number{font-size:66px;letter-spacing:-.08em;font-weight:650;line-height:1.18;margin:22px 0 5px}.due-number span{font-size:14px;letter-spacing:0;font-weight:500;color:var(--sub)}.due-panel>p:not(.eyebrow){font-size:13px;color:var(--sub);margin-bottom:24px;min-height:40px}.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--line);background:var(--surface);margin:18px 0 26px}.stat{padding:22px 24px;border-right:1px solid var(--line)}.stat:last-child{border-right:0}.stat strong{display:block;font-size:28px;line-height:1.15;letter-spacing:-.04em}.stat span{display:block;color:var(--sub);font-size:12px;margin-top:8px}.split-section{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(275px,1fr);gap:18px}.simple-panel{background:var(--surface);border:1px solid var(--line);padding:26px 29px;margin-bottom:20px}.simple-panel p{color:var(--sub);font-size:14px}.panel-heading{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:20px}.panel-heading h2{font-size:20px;margin:0}.preview-list{display:grid}.preview-item,.lesson-row,.result-row{background:transparent;border:0;color:var(--ink);display:flex;align-items:center;text-align:left;width:100%;padding:13px 6px;gap:15px;border-top:1px solid var(--line)}.preview-item:hover,.lesson-row:hover,.result-row:hover{background:var(--soft)}.preview-item>:last-child,.result-row>:last-child{margin-left:auto;color:var(--muted)}.preview-char{font-family:"Noto Sans CJK SC","Microsoft Yahei",sans-serif;font-size:33px;line-height:1.25;min-width:46px;text-align:center}.preview-item strong,.preview-item small,.result-row strong,.result-row small{display:block}.preview-item strong,.result-row strong{font-size:13px}.preview-item small,.result-row small{font-size:12px;color:var(--sub);margin-top:2px}.path-entry{display:grid;grid-template-columns:29px minmax(0,1fr) auto;align-items:center;gap:12px;border-top:1px solid var(--line);padding:18px 0}.path-entry>span:first-child{display:grid;place-items:center;background:var(--soft);color:var(--accent);font-size:12px;font-weight:700;width:28px;height:28px}.path-entry strong,.path-entry small{display:block}.path-entry strong{font-size:13px}.path-entry small{color:var(--sub);font-size:11px;margin-top:4px}.path-entry.locked{opacity:.73}.status-tag{font-size:11px;color:var(--warning-ink);background:var(--warning-bg);padding:5px 8px;white-space:nowrap}.status-tag.complete{color:var(--accent);background:var(--soft)}
.learn-head{display:flex;gap:18px;align-items:center;margin:23px 0 20px;font-size:13px;color:var(--sub)}.learn-head strong{color:var(--ink)}.progress-rail{background:var(--line);height:6px;flex:1;overflow:hidden}.progress-rail span{display:block;background:#56896b;height:100%;min-width:0;transition:width .12s}.learn-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:19px;align-items:start}.lesson-list{border:1px solid var(--line);background:var(--surface);max-height:75vh;overflow:auto}.lesson-row{padding:13px 10px;gap:10px;min-height:70px}.lesson-row:first-child{border-top:0}.lesson-row.selected{background:var(--soft);box-shadow:inset 3px 0 0 var(--accent)}.lesson-number{font-size:11px;color:var(--muted);width:22px;flex:none}.lesson-char{font-size:29px;font-family:"Noto Sans CJK SC",sans-serif;width:40px;text-align:center;flex:none}.lesson-label{flex:1;min-width:0}.lesson-label strong,.lesson-label small{display:block;text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.lesson-label strong{font-size:12px}.lesson-label small{font-size:11px;color:var(--sub)}.lesson-check{color:var(--muted);font-size:15px}.lesson-check.learned{color:var(--accent)}.lesson-paper{background:var(--surface);border:1px solid var(--line);min-width:0;padding:34px clamp(23px,3vw,44px)}.lesson-heading{display:flex;align-items:start;justify-content:space-between;gap:12px}.character-focus{display:flex;align-items:center;gap:clamp(25px,5vw,70px);padding:20px 0 28px}.big-hanzi{font-family:"Noto Serif CJK SC","Songti SC","Noto Sans CJK SC",serif;font-size:clamp(112px,13vw,175px);line-height:1.3;text-align:center;color:var(--ink);flex:0 0 34%}.character-meta{min-width:0}.reading-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.reading{font-size:21px;color:var(--accent)}.character-meta h2{font-size:clamp(24px,2.5vw,32px);margin:13px 0}.character-meta>p{color:var(--sub);font-size:14px;max-width:400px}.character-meta .subnote{font-size:11px;margin-top:22px}.lesson-rule{height:1px;background:var(--line);margin-bottom:30px}.learning-section-heading{display:flex;justify-content:space-between;align-items:end;gap:12px;margin:0 0 18px}.learning-section-heading h3{font-size:24px;margin:0}.section-index{font-size:12px;color:var(--muted)}.word-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.word-card{border:1px solid var(--line);padding:19px 21px;position:relative;min-width:0}.word-index{position:absolute;right:17px;top:14px;font-size:10px;color:var(--muted)}.word-hanzi{font:500 clamp(28px,3vw,41px)/1.5 "Noto Sans CJK SC","Microsoft Yahei",sans-serif}.word-pinyin{color:var(--accent);font-size:14px;margin-bottom:14px}.word-card strong{font-size:13px;display:block;margin-bottom:11px}.sentence-title{margin-top:39px}.sentence-block{background:var(--soft);border-left:3px solid var(--accent);padding:25px 28px}.sentence-hanzi{font:500 clamp(22px,2.5vw,31px)/1.75 "Noto Sans CJK SC","Microsoft Yahei",sans-serif;margin:0 0 8px;overflow-wrap:anywhere}.sentence-pinyin{color:var(--accent);font-size:14px;margin:0 0 9px}.sentence-english{font-size:14px;margin:0 0 19px}.lesson-footer{display:flex;justify-content:space-between;align-items:center;gap:18px;border-top:1px solid var(--line);margin-top:31px;padding-top:26px}.lesson-footer strong{font-size:15px}.lesson-footer p{font-size:12px;color:var(--sub);max-width:325px;margin:5px 0}.lesson-footer .button-row{justify-content:end}
.review-shell{max-width:750px;margin:34px auto 0}.review-bar{display:flex;justify-content:space-between;gap:12px;font-size:12px;color:var(--sub);padding:0 0 14px}.review-card{background:var(--surface);border:1px solid var(--line);padding:40px clamp(25px,6vw,65px);text-align:center;min-height:430px}.review-hanzi{font:500 clamp(80px,12vw,133px)/1.4 "Noto Serif CJK SC","Noto Sans CJK SC",serif;margin:16px 0 15px}.review-card h2{font-size:22px;margin:0 0 14px}.review-card>p.muted{margin-bottom:28px}.review-reveal{margin-top:13px}.review-reveal kbd{font-size:10px;margin-left:4px;background:rgba(255,255,255,.16);padding:3px 5px}.review-answer{border-top:1px solid var(--line);padding-top:21px;margin-top:18px}.review-answer strong{display:block;font-size:23px}.review-answer span{display:block;margin-top:5px}.review-audio{margin-top:9px}.grade-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-top:25px}.grade{border:1px solid var(--line);background:var(--soft);color:var(--ink);padding:13px 8px;font-size:12px}.grade strong,.grade small{display:block}.grade small{color:var(--sub);margin-top:4px}.grade.again{border-bottom:3px solid #ba5c4d}.grade.hard{border-bottom:3px solid #b7934f}.grade.good{border-bottom:3px solid #6e9b73}.grade.easy{border-bottom:3px solid #578b9b}.review-footnote{font-size:11px;color:var(--sub);margin:17px 0 0}.empty-panel{border:1px dashed var(--line);background:var(--surface);padding:30px;max-width:760px}.empty-panel strong{font-size:19px}.empty-panel p{font-size:14px;color:var(--sub);margin:12px 0 20px}
.search-shell{background:var(--surface);border:1px solid var(--line);padding:22px;margin-bottom:20px}.field-label{font-size:13px;font-weight:700;display:block;margin-bottom:10px}input[type=search]{width:100%;padding:13px 15px;min-height:49px;border:1px solid var(--line);border-radius:2px;background:var(--background);color:var(--ink)}.search-shell .muted{margin:10px 0 0}.explore-layout{display:grid;grid-template-columns:minmax(205px,.75fr) minmax(0,1.55fr);gap:18px;align-items:start}.results-list{max-height:640px;overflow:auto;background:var(--surface);border:1px solid var(--line)}.result-row{padding:13px 15px}.result-row>span:first-child{font-size:29px;min-width:46px}.result-row.selected{background:var(--soft)}.explore-detail{background:var(--surface);border:1px solid var(--line);padding:27px 32px;min-height:340px}.detail-character{font:500 90px/1.35 "Noto Serif CJK SC","Noto Sans CJK SC",serif}.detail-reading{font-size:17px;color:var(--accent);margin:0 0 10px}.explore-detail>p:not(.eyebrow){color:var(--sub)}.explore-detail h3{border-top:1px solid var(--line);padding-top:20px;margin-top:25px}.detail-words{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.detail-words>div{background:var(--soft);padding:15px}.detail-words strong{font-size:28px;display:block}.detail-words span,.detail-words small{display:block;font-size:12px;color:var(--sub);margin-top:4px}.detail-sentence{font-size:25px;color:var(--ink)!important}
.progress-panel>.progress-rail{margin:16px 0}.character-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(66px,1fr));gap:7px;margin-top:22px}.character-chip{border:1px solid var(--line);background:var(--background);color:var(--ink);padding:12px 4px;min-height:82px}.character-chip.done{background:var(--soft);border-color:#8ca99a}.character-chip span{font:500 29px/1.2 "Noto Sans CJK SC",sans-serif;display:block}.character-chip small{display:block;color:var(--sub);margin-top:7px}.setting-row{display:flex;justify-content:space-between;gap:22px;align-items:center;padding:20px 0;border-top:1px solid var(--line)}.setting-row strong{font-size:14px}.setting-row p{margin:5px 0 0;font-size:12px}.setting-row select{min-height:43px;background:var(--background);color:var(--ink);border:1px solid var(--line);padding:0 9px}.toggle{display:flex;gap:7px;align-items:center;font-size:12px}.toggle input{accent-color:var(--green);width:19px;height:19px}.mobile-nav{display:none}
@media(max-width:1120px){.app-frame{grid-template-columns:209px minmax(0,1fr)}.sidebar{padding:27px 13px}.brand{gap:10px;padding-left:8px}.brand-glyph{width:38px;height:41px}.brand strong{font-size:11px}.today-top{grid-template-columns:1fr}.hero{min-height:0}.split-section{grid-template-columns:1fr}.learn-layout{grid-template-columns:180px minmax(0,1fr)}.character-focus{gap:14px}.big-hanzi{font-size:100px;flex-basis:28%}.lesson-paper{padding:26px}}
@media(max-width:800px){.app-frame{grid-template-columns:minmax(0,1fr)}.sidebar{display:none}.topbar{min-height:57px}.workspace main{padding:27px 20px 115px}.mobile-nav{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));position:fixed;left:0;right:0;bottom:0;z-index:50;border-top:1px solid var(--line);background:var(--surface);padding:5px 4px max(6px,env(safe-area-inset-bottom))}.mobile-nav a{min-height:54px;display:flex;align-items:center;justify-content:center;flex-direction:column;text-decoration:none;font-size:11px;color:var(--sub);gap:3px}.mobile-nav a span{font-size:22px;line-height:1}.mobile-nav a[aria-current=page]{background:var(--soft);color:var(--accent);font-weight:700}.learn-layout{grid-template-columns:1fr}.lesson-list{display:flex;overflow:auto;max-height:none;scroll-snap-type:x proximity}.lesson-row{min-width:137px;flex:0 0 137px;flex-direction:column;gap:3px;position:relative;border-right:1px solid var(--line);border-top:0;scroll-snap-align:start;padding:10px}.lesson-number{position:absolute;left:9px;top:10px}.lesson-label{text-align:center}.lesson-check{position:absolute;right:9px;top:7px}.lesson-char{font-size:32px}.hero-layout{grid-template-columns:1fr auto}.hero-hanzi{font-size:88px}}
@media(max-width:530px){.topbar{padding:0 16px}.top-caption{font-size:10px}.top-link{display:none}.status-chip{font-size:10px}.workspace main{padding:26px 16px 95px}h1{font-size:36px}.section-intro>p:last-child{font-size:14px}.hero{padding:24px}.hero h2{font-size:29px}.hero-hanzi{font-size:71px}.due-panel{padding:22px}.stats-grid{grid-template-columns:repeat(2,1fr)}.stat{border-bottom:1px solid var(--line);padding:17px}.stat:nth-child(2){border-right:0}.stat:nth-child(n+3){border-bottom:0}.simple-panel{padding:21px}.lesson-paper{padding:24px 20px}.character-focus{flex-direction:column;align-items:flex-start;padding:8px 0 28px;gap:0}.big-hanzi{align-self:center;font-size:117px}.character-meta h2{font-size:29px}.word-grid{gap:8px}.word-card{padding:14px}.word-hanzi{font-size:29px}.word-pinyin{font-size:12px}.word-card strong{font-size:12px}.lesson-footer{flex-direction:column;align-items:stretch}.lesson-footer .button-row{justify-content:start}.explore-layout{grid-template-columns:1fr}.results-list{display:flex;overflow:auto;max-height:160px}.result-row{min-width:145px;border-top:0;border-right:1px solid var(--line)}.explore-detail{padding:21px}.review-card{padding:32px 20px;min-height:380px}.review-hanzi{font-size:91px}.review-bar{font-size:11px}.review-bar span:last-child{display:none}.grade-grid{gap:5px}.grade{padding:11px 4px}.setting-row{align-items:flex-start}}
@media(max-width:350px){.word-grid{grid-template-columns:1fr}.hero-layout{grid-template-columns:1fr}.hero-hanzi{display:none}.top-caption{max-width:140px}.workspace main{padding-left:12px;padding-right:12px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}
:root[data-theme=dark] .hero{background:#284334;border-color:#405d48}:root[data-theme=dark] .hero h2{color:#eef5e9}:root[data-theme=dark] .hero p:not(.eyebrow),:root[data-theme=dark] .hero .eyebrow,:root[data-theme=dark] .hero-hanzi,:root[data-theme=dark] .hero-hanzi span{color:#d1e8d5}

.answer-entry{max-width:390px;text-align:left;margin:22px auto 8px}.answer-entry label{display:block;font-size:12px;font-weight:700;margin-bottom:7px}.answer-entry input{width:100%;min-height:48px;padding:10px 13px;border:1px solid var(--line);background:var(--background);color:var(--ink)}.your-answer{font-size:13px;color:var(--sub);margin:0 0 20px;overflow-wrap:anywhere}.your-answer strong{color:var(--ink);font-size:15px}
/* Extended learning modes: typographic, keyboard-operable, low visual noise. */
.lesson-group-label{width:100%;display:flex;align-items:center;justify-content:space-between;gap:9px;padding:15px 12px 10px;border-bottom:1px solid var(--line);color:var(--sub);background:var(--soft);font-size:11px;letter-spacing:.03em}
.lesson-group-label span{font-size:10px;font-variant-numeric:tabular-nums}
.reader-shortcut{margin-top:15px}
.choice-list{display:grid;gap:10px;margin:25px 0}.choice{width:100%;display:flex;align-items:center;text-align:left;gap:15px;padding:14px 17px;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:2px;font-size:14px;min-height:52px;white-space:normal}
.choice span{display:grid;place-items:center;flex:0 0 29px;height:29px;background:var(--soft);font-size:11px;color:var(--sub);font-weight:750}
.choice:hover:not(:disabled),.choice.selected{border-color:var(--accent);background:var(--soft)}.choice.selected span{background:var(--green);color:#fff}.choice:disabled{cursor:default}
.review-card .choice-list{max-width:650px;margin:25px auto;text-align:left}.review-card .button-row{justify-content:center;margin-top:16px}.review-answer.correct,.reader-feedback.correct{border-left:4px solid #618976}.review-answer.incorrect,.reader-feedback.incorrect{border-left:4px solid #be8b60}.review-answer p{font-size:14px}.review-hanzi{overflow-wrap:anywhere}
.reader-layout{display:grid;grid-template-columns:minmax(200px,.6fr) minmax(0,1.65fr);gap:20px;align-items:start}.reader-sidebar,.reader-paper{margin-bottom:0}.reader-sidebar select{width:100%;min-height:48px;border:1px solid var(--line);background:var(--background);color:var(--ink);padding:10px;font-size:14px}.reader-sidebar .muted{margin:16px 0;font-size:12px}.reader-paper{padding:35px 44px;min-height:540px}.reader-passage{font-family:'Noto Sans CJK SC','Microsoft YaHei','PingFang SC',sans-serif;font-size:clamp(30px,3.8vw,48px);line-height:1.75;overflow-wrap:anywhere;margin:24px 0 12px}.reader-translation{background:var(--soft);margin-top:18px;padding:17px;border:1px solid var(--line)}.reader-translation p{color:var(--sub);margin:0 0 6px}.reader-feedback{padding:13px 16px;background:var(--soft);border:1px solid var(--line);margin-bottom:18px}.reader-feedback p{font-size:13px;margin:7px 0}.mode-tabs{display:flex;gap:6px;flex-wrap:wrap;margin:18px 0}.mode-tabs .button{flex:0 0 auto}
.skill-breakdown{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px;margin-top:17px}.skill-breakdown>div{border:1px solid var(--line);padding:15px;background:var(--soft)}.skill-breakdown strong{display:block;font-size:24px;font-variant-numeric:tabular-nums}.skill-breakdown span{display:block;font-size:12px;color:var(--sub)}
.unit-progress{display:grid;gap:10px;margin:16px 0}.unit-progress>div{display:grid;grid-template-columns:minmax(135px,1fr) minmax(80px,3fr) auto;gap:12px;align-items:center;font-size:12px}.unit-progress .progress-rail{margin:0}
@media(max-width:800px){.lesson-group-label{flex:0 0 auto;max-width:140px;min-width:140px;flex-direction:column;align-items:flex-start;justify-content:center;padding:12px}.reader-layout{grid-template-columns:1fr}.reader-sidebar{display:block}.reader-paper{min-height:0;padding:29px}}
@media(max-width:530px){.reader-paper{padding:20px}.reader-passage{font-size:30px}.choice{padding:10px 12px;gap:10px;font-size:13px}.review-hanzi{font-size:clamp(38px,10vw,88px)}.unit-progress>div{grid-template-columns:1fr auto}.unit-progress .progress-rail{grid-column:1/-1;grid-row:2}}
.daily-goal{background:var(--surface);border:1px solid var(--line);padding:16px 20px;margin:18px 0;display:flex;gap:20px;align-items:center;justify-content:space-between}.daily-goal strong{font-size:13px}.daily-goal p{margin:5px 0 0;font-size:12px;color:var(--sub)}.daily-goal .progress-rail{flex:0 0 min(240px,35%);margin:0}@media(max-width:530px){.daily-goal{display:block}.daily-goal .progress-rail{margin-top:12px}}

/* Batch 3 — focused review, connected texts and lexical lookup */
.dashboard-links{margin-top:20px}
.session-setup{max-width:900px}.session-controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:20px 0}
.session-controls label,.stories-top label{display:grid;gap:7px;font-size:12px;font-weight:700;color:var(--ink)}
.session-controls select,.stories-top select{min-width:0;width:100%;min-height:48px;padding:10px;border:1px solid var(--line);background:var(--surface);color:var(--ink)}
.review-progress{height:4px;margin:0 0 8px}.session-finish .stats-grid{margin-bottom:25px}
.word-ref{display:block;text-align:left;background:var(--soft);border:1px solid var(--line);padding:15px;min-width:0;color:var(--ink)}
.word-ref:hover{border-color:var(--accent)}.word-ref strong{display:block;font-size:26px;font-weight:600}.word-ref span,.word-ref small{display:block;color:var(--sub);font-size:12px;margin-top:4px}
.word-example{border-top:1px solid var(--line);padding-top:12px;margin-top:12px}.word-example p{margin:5px 0;font-size:13px}.word-example p:first-child{font-size:22px;color:var(--ink)}
.stories-top{display:flex;align-items:end;justify-content:space-between;gap:16px;margin:20px 0}.stories-top>div:first-child{flex:1;min-width:0;max-width:520px}
.story-stat{display:flex;align-items:center;gap:9px;background:var(--soft);padding:10px 16px;border:1px solid var(--line)}.story-stat strong{font-size:23px;white-space:nowrap}.story-stat span{max-width:150px;font-size:11px;color:var(--sub)}
.stories-layout{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,1fr);align-items:start;gap:20px}.story-paper,.story-practice{min-width:0;padding:30px}
.story-paper h2{font-size:27px;margin-bottom:14px}.story-line{border-top:1px solid var(--line);padding:17px 0 13px}.story-chinese{font-family:'Noto Sans CJK SC','Microsoft YaHei','PingFang SC',sans-serif;font-size:clamp(23px,2.4vw,32px)!important;line-height:2.05;color:var(--ink)!important;overflow-wrap:anywhere;margin:0}
.story-token{border:0;border-bottom:1px dotted var(--muted);padding:0 1px;background:transparent;color:inherit;font:inherit;line-height:inherit;vertical-align:baseline;touch-action:manipulation}.story-token:hover{background:var(--soft);border-bottom-color:var(--accent)}
.story-english,.story-pinyin{font-size:13px!important;margin:5px 0!important}.story-pinyin{color:var(--accent)!important}.story-glossary{border-left:3px solid var(--accent);background:var(--soft);padding:15px;margin:18px 0}.story-glossary strong{font-size:24px}.story-glossary p{margin:5px 0 10px;color:var(--ink)}
.story-practice h3{margin:14px 0 22px;font-size:19px;line-height:1.45}.story-exercise-chinese{font-family:'Noto Sans CJK SC',sans-serif;font-size:28px!important;color:var(--ink)!important;line-height:1.7}
.story-practice .choice-list{margin:16px 0 20px}.story-assembled{min-height:68px;background:var(--soft);border:1px solid var(--line);padding:9px;display:flex;align-items:center;flex-wrap:wrap;gap:6px;margin:10px 0 18px}.story-chunks{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 24px}.chunk{color:var(--ink);background:var(--surface);border:1px solid var(--line);padding:10px 13px;min-height:45px;font-size:20px}.chunk:hover{border-color:var(--accent);background:var(--soft)}.chunk.chosen{background:var(--soft);border-color:var(--accent)}
.story-practice .answer-entry{margin:10px 0 20px}.story-practice .reader-feedback{margin-top:15px}
@media(max-width:1050px){.stories-layout{grid-template-columns:1fr}.story-paper,.story-practice{padding:25px}}
@media(max-width:530px){.session-controls{grid-template-columns:1fr}.stories-top{align-items:stretch;flex-direction:column}.story-stat{justify-content:flex-start}.stories-top>div:first-child{max-width:none}.story-paper,.story-practice{padding:20px}.story-chinese{font-size:clamp(22px,6vw,29px)!important}.story-paper h2{font-size:24px}.story-practice .mode-tabs{gap:5px}.story-practice .button.small{min-height:42px}.story-practice .choice{font-size:13px}}
/* Preserve Settings access and readable vocabulary on narrow mobile screens. */
.word-pinyin{font-size:15px;overflow-wrap:anywhere}.word-card strong{overflow-wrap:anywhere}
@media(max-width:530px){.top-link{display:inline-block;font-size:13px;min-height:42px;padding:8px}.top-caption{display:none}.topbar{justify-content:flex-end}.top-actions{gap:10px}.word-pinyin{font-size:14px}.word-card strong{font-size:14px}.mobile-nav a{font-size:11px}}
@media(max-width:350px){.topbar{padding:0 10px}.status-chip{padding:5px 7px}.top-actions{gap:7px}}
/* Batch 4 — interactive lesson depth, Practice Lab, activity evidence, and reading controls. */
.lesson-guide{border-left:3px solid var(--accent);background:var(--soft);padding:18px 20px;margin:18px 0 25px;color:var(--ink)}
.lesson-guide h3{margin:0 0 8px;font-size:17px}.lesson-guide p{font-size:14px;line-height:1.7;margin:8px 0}.lesson-guide p:last-child{margin-bottom:0}
.practice-header{display:flex;align-items:end;justify-content:space-between;gap:18px;margin:18px 0}
.practice-header>label{width:min(440px,100%);display:grid;gap:7px;font-weight:650;font-size:12px}.practice-header select{min-height:49px;width:100%;padding:10px 12px;background:var(--surface);border:1px solid var(--line);color:var(--ink)}.practice-header>p{font-size:12px;color:var(--sub);margin:0 0 10px}
.practice-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 22px}.practice-tabs .button{min-height:45px}.practice-card{max-width:980px;min-height:370px;padding:30px 34px}.practice-card h2{font-size:clamp(22px,2.8vw,31px);line-height:1.4;max-width:740px;overflow-wrap:anywhere}.practice-hanzi{font-family:'Noto Sans CJK SC','Microsoft Yahei','PingFang SC',sans-serif;font-size:clamp(36px,5vw,59px);line-height:1.7;overflow-wrap:anywhere}.practice-card .choice-list{max-width:690px}.practice-card .choice{min-height:54px}.practice-card .answer-entry{margin-left:0}.practice-card .button-row{margin-top:20px}
.activity-bars{height:145px;display:grid;grid-template-columns:repeat(14,minmax(0,1fr));align-items:end;gap:5px;max-width:680px;padding:12px 10px 8px;border-bottom:1px solid var(--line);background:var(--soft)}.activity-day{height:100%;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:6px;min-width:0}.activity-day span{display:block;width:min(100%,19px);min-height:3px;background:var(--accent)}.activity-day small{font-size:10px;color:var(--sub)}.weak-list{display:grid;gap:8px;margin:14px 0 24px}.weak-list>div{display:flex;align-items:center;gap:15px;background:var(--soft);padding:11px 13px;border:1px solid var(--line)}.weak-list strong{font-size:27px}.weak-list span{font-size:12px;color:var(--sub);flex:1}.weak-list .button{flex-shrink:0}
.reading-tools{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:0 0 17px}.reading-tools .muted{font-size:12px;margin:0 0 0 auto}.large-reading .story-chinese{font-size:clamp(30px,3.7vw,45px)!important;line-height:1.95}.large-reading .story-token{border-bottom-color:var(--accent)}
.story-token:focus-visible{outline-offset:2px}.story-glossary{overflow-wrap:anywhere}.practice-card,.story-paper,.story-practice{overflow-wrap:anywhere}
@media(max-width:800px){.practice-header{align-items:stretch;flex-direction:column}.practice-header>p{margin:0}.practice-card{padding:24px}.practice-tabs{gap:6px}.activity-bars{height:125px}.reading-tools .muted{margin-left:0}}
@media(max-width:530px){.practice-card{padding:20px;min-height:0}.practice-card h2{font-size:23px}.practice-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.practice-tabs .button{width:100%;padding:9px;font-size:12px}.practice-hanzi{font-size:34px}.practice-card .choice{font-size:14px}.activity-bars{height:112px;gap:3px;padding-left:5px;padding-right:5px}.activity-day small{font-size:9px}.weak-list>div{flex-wrap:wrap;gap:9px}.weak-list span{min-width:130px}.reading-tools .button{flex-grow:1}.large-reading .story-chinese{font-size:clamp(27px,7vw,38px)!important}.lesson-guide{padding:14px}}
@media(max-width:350px){.practice-tabs .button{font-size:11px}.practice-card{padding:15px}.reading-tools .button{padding:8px}.activity-day small{font-size:8px}}
/* Reader focus marks the current sentence without hiding neighboring context. */
.story-line.reading-line-focused{background:var(--soft);outline:2px solid var(--accent);outline-offset:-2px;padding:17px 12px 13px}

/* Batch 5: adaptive suggestions, durable guided practice and connected reading. */
.recommendation-panel{margin:20px 0}.recommendations{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px;margin:16px 0}.recommendation-item{display:flex;gap:11px;align-items:center;min-width:0;padding:13px;text-align:left;color:var(--ink);background:var(--soft);border:1px solid var(--line);cursor:pointer}.recommendation-item:hover,.recommendation-item:focus-visible{border-color:var(--accent);outline-offset:3px}.recommendation-item>span:nth-child(2){min-width:0;flex:1}.recommendation-item strong,.recommendation-item small{display:block}.recommendation-item small{color:var(--sub);margin-top:5px;font-size:11px;line-height:1.35}.rec-glyph{font-size:31px;font-family:'Noto Sans CJK SC','Microsoft YaHei',sans-serif}.guided-start{display:grid;grid-template-columns:minmax(0,1fr) minmax(270px,.8fr);gap:24px;padding:24px;margin:20px 0}.guided-start h2{margin:4px 0 11px;font-size:23px}.guided-start p{line-height:1.6;font-size:13px;color:var(--sub)}.guided-start-actions{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-content:center}.guided-start-actions label{font-size:12px;font-weight:600;display:grid;gap:7px}.guided-start-actions select{width:100%;min-width:0;padding:11px;background:var(--surface);color:var(--ink);border:1px solid var(--line);min-height:45px}.guided-start-actions>.button{grid-column:1/-1}.guided-session{max-width:950px;padding:30px}.guided-session .progress-rail{margin:12px 0 30px}.guided-session h2{font-size:clamp(24px,3vw,36px);margin:12px 0 24px;line-height:1.5;overflow-wrap:anywhere}.guided-meta{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;color:var(--sub);font-size:12px}.guided-session .choice-list{max-width:750px}.guided-session .choice{min-height:52px}.guided-session .answer-entry{max-width:640px}.guided-session .reader-feedback{max-width:700px}.guided-session .button-row{margin-top:24px}.reading-context{padding:12px 15px;margin:12px 0 22px;background:var(--soft);border:1px solid var(--line);font-size:14px}.reading-context summary{font-weight:600;cursor:pointer;min-height:24px}.reading-context p[lang]{font-size:23px;line-height:1.8;margin:8px 0}.reading-context .muted{font-size:12px}.word-example .button{margin:7px 0 10px}
@media(max-width:800px){.guided-start{grid-template-columns:1fr}.guided-session{padding:24px}}@media(max-width:530px){.recommendations{grid-template-columns:1fr 1fr}.recommendation-item{padding:10px;gap:7px}.rec-glyph{font-size:25px}.guided-start{padding:17px;gap:12px}.guided-session{padding:18px}.guided-session h2{font-size:23px}.guided-meta{flex-direction:column}.guided-start-actions{grid-template-columns:1fr 1fr}}@media(max-width:350px){.recommendations{grid-template-columns:1fr}.guided-start-actions{grid-template-columns:1fr}}

.guided-reading-context{background:var(--soft);border:1px solid var(--line);padding:12px 22px;margin:15px 0 22px}.guided-reading-line{border-top:1px solid var(--line);padding:8px 0}.guided-reading-line:first-of-type{border-top:0}.guided-reading-line p[lang]{font-size:clamp(23px,3vw,30px);line-height:1.65;margin:0;overflow-wrap:anywhere}.guided-reading-line p.muted{margin:4px 0 0;font-size:12px;line-height:1.6}.guided-reading-context .eyebrow{margin:4px 0 12px}@media(max-width:530px){.guided-reading-context{padding:10px 12px}.guided-reading-line p[lang]{font-size:23px}}

/* Batch 6: onboarding, formative lessons, focused coaching, and honest data status. */
.onboarding-panel{display:grid;grid-template-columns:minmax(0,1fr) minmax(240px,.95fr);gap:18px;align-items:center;margin:20px 0;padding:24px;border-left:3px solid var(--accent)}
.onboarding-panel h2,.coach-panel h2{font-size:clamp(19px,2.3vw,26px);line-height:1.3;margin:6px 0 10px}
.onboarding-panel p{line-height:1.55}.placement-question{min-width:0}.placement-hanzi{font-size:clamp(53px,7vw,84px);margin:0 0 6px;line-height:1.3;font-family:'Noto Sans CJK SC',sans-serif}.placement-question .choice-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.placement-question .choice{min-width:0;overflow-wrap:anywhere}
.coach-panel{margin:20px 0}.coach-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:17px 0}.coach-grid article{border:1px solid var(--line);padding:16px;background:var(--soft);min-width:0}.coach-grid article>strong{display:block;font-size:37px;margin:6px 0}.coach-grid article p{font-size:12px;color:var(--sub)}
.coach-skills{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:16px 0 23px}.coach-skills>div{background:var(--soft);border:1px solid var(--line);padding:14px}.coach-skills strong,.coach-skills span{display:block}.coach-skills strong{font-size:14px;margin-bottom:8px}.coach-skills span{color:var(--sub);font-size:12px}
.lesson-checkpoint{border:1px solid var(--line);background:var(--soft);padding:24px;margin:30px 0;scroll-margin-top:45px}.lesson-checkpoint h3{font-size:22px;margin:8px 0}.lesson-checkpoint .choice-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:16px 0}.lesson-checkpoint .choice{min-width:0;min-height:52px;overflow-wrap:anywhere}.checkpoint-hanzi{font-size:40px;margin:10px 0}
:where(.onboarding-panel,.coach-panel,.lesson-checkpoint,.coach-analytics) :focus-visible{outline:3px solid var(--accent);outline-offset:3px}
@media(max-width:850px){.onboarding-panel{grid-template-columns:1fr}.coach-grid,.coach-skills{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.onboarding-panel{padding:18px}.coach-grid,.coach-skills{grid-template-columns:1fr}.lesson-checkpoint{padding:17px}.lesson-checkpoint .choice-list{grid-template-columns:1fr}.placement-question .choice-list{grid-template-columns:1fr}.mobile-nav{grid-template-columns:repeat(6,minmax(0,1fr))}.mobile-nav a{font-size:10px;gap:4px;padding:2px 0}.mobile-nav a span{font-size:20px}.onboarding-panel .button-row{align-items:stretch;flex-direction:column}}
@media(max-width:350px){.mobile-nav a{font-size:9px}.mobile-nav a span{font-size:18px}.onboarding-panel .choice{font-size:14px}}

@media(max-width:900px){.mobile-nav{grid-template-columns:repeat(6,minmax(0,1fr));}}

/* Batch 7 — accessible contextual teaching and responsive vocabulary workspace. */
.context-link-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,205px),1fr));gap:10px;margin:14px 0}
.lesson-context-links{margin:22px 0;padding:18px 20px;background:var(--soft);border:1px solid var(--line)}
.lesson-context-links h3{font-size:20px;margin:5px 0 12px}
.context-link{background:var(--surface);color:var(--ink);border:1px solid var(--line);display:grid;grid-template-columns:1fr auto;gap:5px 9px;padding:14px;text-align:left;cursor:pointer;min-width:0}
.context-link strong{font-size:14px}.context-link small{font-size:12px;color:var(--sub);grid-row:2;line-height:1.4}.context-link>span{grid-row:1/3;grid-column:2;align-self:center;color:var(--accent)}
.context-link:hover,.context-link:focus-visible{border-color:var(--accent);outline-offset:3px}
.story-line-top{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.story-line-top .eyebrow{margin:0;font-size:11px;letter-spacing:.07em}
.story-line-actions{display:flex;gap:6px;flex-wrap:wrap}.story-line-actions .button{min-height:35px;font-size:11px;padding:7px 11px}
.line-support{border-left:3px solid var(--accent);padding:2px 0 3px 13px;margin:10px 0;background:var(--soft)}
.line-support .story-pinyin,.line-support .story-english{margin:6px 0;line-height:1.55}
.story-glossary .button{margin:6px 8px 5px 0}
.wordbook-filter{margin:8px 0 4px}.wordbook-filter .button[aria-pressed=true]{border-color:var(--accent);background:var(--soft);color:var(--ink)}
.saved-words{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.saved-word-pill{display:flex;align-items:center;gap:9px;min-height:45px;color:var(--ink);border:1px solid var(--line);background:var(--surface);padding:8px 12px;cursor:pointer}
.saved-word-pill>span{font-size:23px}.saved-word-pill small{color:var(--sub);font-size:11px;max-width:110px;overflow-wrap:anywhere}
.saved-word-pill:hover,.saved-word-pill:focus-visible{border-color:var(--accent);outline-offset:3px}
.story-practice .mode-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.story-practice .mode-tabs .button{min-width:0;padding:8px 7px;white-space:normal;line-height:1.35;min-height:45px}
.explore-detail .button-row{display:flex;flex-wrap:wrap;gap:8px}
:where(.story-line-actions,.story-practice,.saved-words,.wordbook-filter) :focus-visible{outline:3px solid var(--accent);outline-offset:2px}
@media(max-width:700px){.story-practice .mode-tabs{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-context-links{padding:14px}.wordbook-filter{margin-top:12px}.story-line-top{gap:6px}.story-line-actions .button{min-height:41px}}
@media(max-width:390px){.story-practice .mode-tabs{grid-template-columns:repeat(2,minmax(0,1fr))}.story-line-actions{width:100%}.story-line-actions .button{flex:1}.saved-word-pill small{max-width:78px}}
@media(prefers-reduced-motion:reduce){.context-link,.saved-word-pill,.story-line-actions .button{transition:none!important;animation:none!important}}
/* Batch 8 — compact, reading-first surfaces; no template gradients or ornamental cards */
.pathway-panel{border-left:4px solid var(--accent)}
.pathway-panel .panel-heading{align-items:flex-start;gap:14px;flex-wrap:wrap}
.pathway-panel .eyebrow{margin:0 0 5px}
.pathway-steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:15px 0}
.pathway-step{display:grid;grid-template-columns:28px 44px minmax(0,1fr) 14px;gap:9px;align-items:center;text-align:left;color:var(--ink);background:var(--surface);border:1px solid var(--line);min-height:76px;padding:10px 12px;cursor:pointer}
.pathway-step:hover,.pathway-step:focus-visible{border-color:var(--accent);background:var(--soft);outline-offset:2px}
.pathway-rank{font-size:12px;align-self:start;color:var(--sub);font-variant-numeric:tabular-nums}
.pathway-hanzi{font-size:30px;line-height:1.2;font-family:"Noto Sans CJK SC","Microsoft Yahei","PingFang SC",sans-serif}
.pathway-step strong{display:block;font-size:13px;line-height:1.3}
.pathway-step small{display:block;font-size:11px;line-height:1.5;color:var(--sub);margin-top:5px}
.dialogue-top{display:grid;grid-template-columns:minmax(220px,1fr) minmax(0,1.2fr);gap:20px;align-items:end}
.dialogue-top label{display:grid;gap:8px;color:var(--sub);font-size:13px}
.dialogue-top select{width:100%;min-width:0}
.dialogue-layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(290px,.85fr);align-items:start;gap:16px}
.dialogue-layout>.simple-panel{min-width:0}
.dialogue-turns{display:grid;gap:7px;padding:12px 0}
.dialogue-turn{display:grid;grid-template-columns:36px minmax(0,1fr);gap:11px;align-items:start;padding:14px 0;border-top:1px solid var(--line)}
.speaker-label{display:grid;place-items:center;width:32px;height:32px;background:var(--soft);border:1px solid var(--line);font-size:12px;font-weight:750;color:var(--ink)}
.dialogue-chinese{font-family:"Noto Sans CJK SC","Microsoft Yahei","PingFang SC",sans-serif;font-size:25px;line-height:1.55;margin:0;overflow-wrap:anywhere}
.dialogue-pinyin{font-size:15px;color:var(--accent);margin:5px 0}
.dialogue-turn .muted{margin:5px 0;font-size:13px;line-height:1.5}
.dialogue-turn .button{min-height:37px;font-size:12px;padding:7px 12px}
.dialogue-quiz{position:sticky;top:20px}
.dialogue-quiz h2{line-height:1.35;font-size:21px;margin:9px 0 19px}
.dialogue-quiz .choice-list{display:grid;gap:8px}
.dialogue-quiz .choice{min-height:54px;text-align:left}
.dialogue-shortcut{display:flex;justify-content:space-between;gap:15px;align-items:center}
.dialogue-shortcut p{margin:5px 0 0;color:var(--sub);font-size:13px}
.wordbook-practice{max-width:760px;margin-inline:auto}
.wordbook-hero{text-align:center;font-family:"Noto Sans CJK SC","Microsoft Yahei","PingFang SC",sans-serif;font-size:clamp(58px,12vw,104px);line-height:1.4;padding:14px 8px;background:var(--soft);border-bottom:1px solid var(--line);margin:10px 0 21px;overflow-wrap:anywhere}
.wordbook-practice h2{font-size:20px;margin:10px 0 20px}
.wordbook-practice .choice-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.wordbook-practice .choice{min-height:60px;overflow-wrap:anywhere}
.diagnostic-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:16px 0}
.diagnostic-list>div{border:1px solid var(--line);background:var(--soft);padding:13px;min-width:0}
.diagnostic-list strong{display:block;font-size:13px}
.diagnostic-list span{display:block;font-size:12px;color:var(--sub);margin-top:5px;line-height:1.5}
.practice-shortcuts>.button-row,.dialogue-shortcut>.button-row{flex-wrap:wrap}
@media(max-width:1100px){.dialogue-layout{grid-template-columns:1fr}.dialogue-quiz{position:static}.dialogue-top{grid-template-columns:1fr}.pathway-steps{grid-template-columns:1fr}}
@media(max-width:800px){.dialogue-chinese{font-size:25px}.wordbook-hero{font-size:76px}.pathway-step{min-height:70px}.dialogue-shortcut{flex-direction:column;align-items:stretch}.diagnostic-list{grid-template-columns:1fr}.dialogue-top .stats-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:430px){.dialogue-turn{grid-template-columns:28px minmax(0,1fr);gap:8px}.speaker-label{width:26px;height:28px}.dialogue-chinese{font-size:22px}.dialogue-top .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.wordbook-practice .choice-list{grid-template-columns:1fr}.wordbook-hero{font-size:64px}.pathway-step{grid-template-columns:21px 37px minmax(0,1fr) 12px;padding:9px 7px}.pathway-hanzi{font-size:25px}}
@media(prefers-reduced-motion:reduce){.pathway-step,.dialogue-turn,.wordbook-practice{transition:none!important;animation:none!important}}
/* Batch 9: restrained editorial practice surfaces, responsive and keyboard accessible. */
.learning-studio{max-width:1000px;margin:22px auto;padding:clamp(18px,3vw,32px);border-left:3px solid var(--accent)}
.learning-studio h2{font-size:clamp(20px,2.7vw,30px);line-height:1.45;margin:14px 0 19px;overflow-wrap:anywhere}
.learning-studio .practice-hanzi{font-size:clamp(30px,5vw,47px);line-height:1.6;overflow-wrap:anywhere;margin:12px 0}
.learning-studio .choice-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;max-width:860px}
.learning-studio .choice{min-height:58px;font-size:15px;text-align:left;white-space:normal;overflow-wrap:anywhere}
.learning-studio .answer-entry{max-width:780px}.learning-studio .answer-entry textarea{width:100%;resize:vertical;min-height:105px;padding:15px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:25px;font-family:'Noto Sans CJK SC','Microsoft Yahei','PingFang SC',sans-serif;line-height:1.6}
.learning-studio .reader-feedback{margin:15px 0;padding:15px;max-width:840px}
.learning-studio .lesson-guide{margin:16px 0;padding:14px}
.learning-studio .guided-meta{border-bottom:1px solid var(--line);padding:11px 0;margin:8px 0 16px}
.learning-studio .button-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.compact-select{font-size:12px;display:flex;flex-direction:column;gap:4px;min-width:165px;color:var(--sub)}.compact-select select{max-width:210px;min-height:40px;color:var(--ink);background:var(--surface);border:1px solid var(--line)}
.extra-diagnostic{border-top:1px solid var(--line);padding:10px 0;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px}.extra-diagnostic span{color:var(--sub)}
:where(.learning-studio,.compact-select) :focus-visible{outline:3px solid var(--accent);outline-offset:3px}
@media(max-width:700px){.learning-studio .choice-list{grid-template-columns:1fr}.learning-studio{padding:17px}.learning-studio .practice-hanzi{font-size:27px}.learning-studio .button-row .button{min-height:44px}.extra-diagnostic{flex-direction:column;align-items:flex-start}}
@media(max-width:380px){.learning-studio .answer-entry textarea{font-size:21px}.compact-select{min-width:0;max-width:100%}}
@media(prefers-reduced-motion:reduce){.learning-studio *{scroll-behavior:auto!important;animation:none!important}}
/* Batch 10: connected study tools, designed without a final owner visual lock. */
.connection-bridge{margin:20px 0;padding:24px}.bridge-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:18px 0}.bridge-option{display:flex;align-items:center;min-width:0;gap:12px;background:var(--soft);color:var(--ink);border:1px solid var(--line);padding:14px;text-align:left;cursor:pointer}.bridge-option:hover{border-color:var(--accent)}.bridge-option:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.bridge-option>span:nth-child(2){flex:1;min-width:0}.bridge-option strong,.bridge-option small{display:block}.bridge-option small{margin-top:5px;font-size:12px;line-height:1.5;color:var(--sub)}.bridge-icon{display:grid;place-items:center;width:40px;height:40px;flex:none;color:var(--accent);font-size:22px;background:var(--surface);font-family:'Noto Sans CJK SC','Microsoft YaHei',sans-serif}.tone-teaching{margin:14px 0;padding:14px;border:1px solid var(--line);background:var(--surface);font-size:13px}.tone-teaching summary{font-weight:700;cursor:pointer;min-height:30px;display:flex;align-items:center;justify-content:space-between;gap:12px}.tone-teaching summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.tone-teaching p{line-height:1.6}.tone-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:8px;margin:15px 0}.tone-piece{border:1px solid var(--line);padding:10px;min-width:0;display:grid;gap:5px}.tone-piece span{color:var(--accent);font-size:12px}.tone-piece strong{font-size:13px}.tone-piece small{color:var(--sub);line-height:1.4}.connected-analytics{margin:18px 0;padding:16px;border:1px solid var(--line);background:var(--soft)}.connected-analytics h3{margin:0 0 5px}.connected-analytics-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:12px}.connected-analytics-item{background:var(--surface);border:1px solid var(--line);padding:12px;min-width:0}.connected-analytics-item strong,.connected-analytics-item span{display:block}.connected-analytics-item span{font-size:12px;line-height:1.5;margin-top:6px;color:var(--sub)}.guided-reading-context>p[lang]{font-size:clamp(21px,3vw,29px);line-height:1.6;margin:8px 0}.guided-session .answer-entry input{font-size:clamp(16px,2.5vw,22px)}
@media(max-width:760px){.bridge-options{grid-template-columns:1fr}.connected-analytics-grid{grid-template-columns:1fr 1fr}.connection-bridge{padding:17px}.guided-session .button-row{gap:7px}.tone-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:420px){.connected-analytics-grid{grid-template-columns:1fr}.bridge-option{padding:11px}.bridge-icon{width:35px;height:35px}.guided-session .button-row .button{flex:1 1 46%;min-height:44px}}
@media(prefers-reduced-motion:reduce){.bridge-option,.tone-teaching{transition:none!important;animation:none!important}}
.dialogue-word-links{border-top:1px solid var(--line);margin-top:16px;padding-top:14px}.dialogue-word-links .eyebrow{margin:5px 0}.word-link-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}.word-link-row .button{display:inline-flex;align-items:center;flex-wrap:wrap;gap:6px;min-height:42px}.word-link-row small{font-size:11px;color:var(--sub)}
@media(max-width:490px){.word-link-row .button{flex:1 1 42%;justify-content:center}.dialogue-word-links{padding-top:10px}}
.review-queue-preview{margin:14px 0 22px;padding:15px;border:1px solid var(--line);background:var(--soft)}.review-queue-preview>strong{display:block;font-size:13px;margin-bottom:10px}.review-queue-reasons{display:flex;gap:8px;flex-wrap:wrap}.review-queue-reasons span{font-size:12px;padding:7px 10px;background:var(--surface);border:1px solid var(--line);color:var(--sub)}
/* Batch 11 — neutral course-first layout; not a final owner-approved visual design. */
.course-home{display:grid;grid-template-columns:minmax(0,1fr) minmax(165px,240px);gap:24px;align-items:center;margin:18px 0;border-left:4px solid var(--accent);padding:clamp(18px,3vw,28px)}
.course-home h2{font-size:clamp(22px,3vw,31px);max-width:700px;margin:6px 0 12px;line-height:1.25}
.course-home p{line-height:1.65;max-width:740px}.course-home-cta{display:flex;flex-direction:column;gap:8px;min-width:0;padding:16px;border:1px solid var(--line);background:var(--soft)}
.course-home-cta>span{font-family:'Noto Sans CJK SC','Microsoft YaHei','PingFang SC',sans-serif;font-size:65px;line-height:1.4;text-align:center;color:var(--ink)}
.course-home-cta small{color:var(--sub);text-align:center;line-height:1.4}.course-home-cta .button{min-height:48px;white-space:normal}
.course-selection,.course-active,.course-connections{max-width:1080px;margin:18px auto;padding:clamp(18px,3vw,30px)}
.course-selection-main{display:flex;align-items:center;gap:24px;margin:16px 0;border-bottom:1px solid var(--line);padding-bottom:15px}
.course-selection-main h2{font-size:clamp(23px,3vw,33px);margin:0 0 8px}.course-selection-main p{line-height:1.7;margin:5px 0}
.course-big-char{font-family:'Noto Sans CJK SC','Microsoft YaHei','PingFang SC',sans-serif;font-size:clamp(70px,11vw,110px);color:var(--ink);line-height:1.35}
.course-selection label{display:block;font-weight:700;margin:20px 0 8px}.course-selection select{width:100%;max-width:580px;min-height:46px}
.course-prereqs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;margin:10px 0}.course-prereqs>strong{width:100%;font-size:13px}.course-prereqs>span{border:1px solid var(--line);background:var(--soft);color:var(--sub);padding:8px;font-size:12px}
.course-progress-head{display:flex;justify-content:space-between;align-items:center;gap:15px;color:var(--sub);font-size:13px;font-weight:650}
.course-stage-bar{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:7px;margin:16px 0 26px}
.course-stage-bar span{min-height:8px;font-size:0;background:var(--line);border:1px solid var(--line)}.course-stage-bar .passed{background:var(--accent);border-color:var(--accent)}.course-stage-bar .current{border:2px solid var(--accent);background:var(--soft)}
.course-stage{max-width:900px;margin:auto}.course-stage h2{font-size:clamp(22px,3vw,30px);margin:10px 0 22px;line-height:1.4}
.course-teaching{display:grid;grid-template-columns:minmax(90px,150px) minmax(0,1fr);gap:22px;align-items:start;margin-bottom:25px}
.course-teaching>div:nth-child(2){line-height:1.7;min-width:0}.course-teaching strong{font-size:18px}
.course-focus{display:flex;align-items:center;justify-content:center;min-height:145px;border:1px solid var(--line);background:var(--soft);font-family:'Noto Sans CJK SC','Microsoft YaHei','PingFang SC',sans-serif;font-size:clamp(55px,9vw,80px)}
.course-prompt-hanzi{font-size:clamp(36px,7vw,64px);line-height:1.6;margin:12px 0 22px;overflow-wrap:anywhere}
.course-question .choice-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.course-question .choice{min-height:61px;text-align:left;white-space:normal;overflow-wrap:anywhere}
.course-question .answer-entry{max-width:650px}.course-question .answer-entry input{font-size:22px;min-height:53px}
.course-hint{padding:12px;margin:14px 0;border:1px solid var(--line);background:var(--soft)}.course-hint p{margin-bottom:0}
.course-bottom{margin-top:25px;border-top:1px solid var(--line);padding-top:17px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.course-connections h3{margin-bottom:5px}.course-connections .button-row{margin-top:16px}.course-unit-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:15px}
.course-unit{padding:14px;background:var(--soft);border:1px solid var(--line);min-width:0;display:grid;gap:9px}.course-unit strong{font-size:13px}.course-unit span{font-size:12px;color:var(--sub)}
.course-learn-action{margin:14px 0}.course-learn-action .button{min-height:48px}
:where(.course-home,.course-selection,.course-active,.course-connections,.course-unit-grid) :focus-visible{outline:3px solid var(--accent);outline-offset:3px}
@media(max-width:760px){.course-home{grid-template-columns:1fr}.course-home-cta{display:grid;grid-template-columns:70px minmax(0,1fr);align-items:center}.course-home-cta>span{grid-row:span 2;font-size:45px}.course-home-cta small{text-align:left}.course-home-cta .button{grid-column:1/-1}.course-question .choice-list,.course-unit-grid{grid-template-columns:1fr}.course-home,.course-selection,.course-active,.course-connections{padding:17px}}
@media(max-width:440px){.course-teaching{grid-template-columns:1fr;gap:10px}.course-focus{min-height:110px;font-size:65px}.course-selection-main{gap:11px}.course-selection-main .course-big-char{font-size:65px}.course-bottom .button-row{width:100%}.course-bottom .button{flex:1 1 100%;min-height:44px}.course-stage .button-row .button{flex:1 1 100%;min-height:48px}.course-progress-head{font-size:12px}.course-unit-grid{gap:7px}}
@media(prefers-reduced-motion:reduce){.course-stage-bar *,.course-home *{animation:none!important;transition:none!important}}
.course-vocabulary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:12px 0 23px}.course-vocab-entry{border:1px solid var(--line);background:var(--soft);padding:14px;display:flex;flex-wrap:wrap;gap:9px;align-items:center;min-width:0}.course-vocab-entry>strong{font-family:'Noto Sans CJK SC','Microsoft YaHei','PingFang SC',sans-serif;font-size:clamp(27px,4vw,38px);width:100%}.course-vocab-entry>span{font-size:14px;color:var(--accent)}.course-vocab-entry>small{flex:1 1 100%;color:var(--sub);font-size:14px}.course-sentence-preview{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:17px 0;margin-bottom:22px}.course-sentence-preview>p[lang]{font-size:clamp(23px,4vw,31px);line-height:1.65;margin:8px 0}.course-sentence-preview>p:not([lang]){line-height:1.65;color:var(--sub)}
@media(max-width:510px){.course-vocabulary{grid-template-columns:1fr}.course-vocab-entry{padding:12px}.course-sentence-preview>p[lang]{font-size:24px}}

/* Batch 12: low-friction day plan, responsive, recoverable course repairs. */
.course-day-focus{margin:15px 0 0;padding:13px 16px;border-left:3px solid var(--accent);background:var(--soft);font-size:13px}
.course-day-focus p{margin:5px 0 9px;line-height:1.6}
.course-day-focus .button{margin:3px 6px 2px 0}
.course-next-day{margin:20px 0;padding:22px}
.course-next-day h3{margin:8px 0 12px;font-size:clamp(19px,2.2vw,25px)}
.course-next-day ol{padding-left:23px;line-height:1.9;color:var(--ink)}
.course-next-day .muted{line-height:1.65}
.repair-active .choice-list{max-width:730px}
.repair-active .answer-entry{max-width:630px}
.repair-active .course-prompt-hanzi{line-height:1.8}
@media(max-width:600px){.course-next-day{padding:16px}.course-day-focus{padding:12px}.repair-active .choice-list{display:grid;grid-template-columns:1fr}.repair-active .button-row .button{min-height:44px}}
/* Batch 13: readable cross-context teaching and observational skill recap. */
.learning-bridge,.course-consolidation{margin-top:20px}
.bridge-teaching-flow{display:grid;grid-template-columns:minmax(115px,.5fr) minmax(210px,1.35fr) minmax(215px,1.3fr);gap:13px;align-items:stretch;margin-bottom:16px}
.bridge-character,.bridge-word,.bridge-sentence{min-width:0;border:1px solid var(--line);background:var(--background);padding:16px;display:flex;flex-direction:column;gap:6px}
.bridge-character{justify-content:center;align-items:center;text-align:center}
.bridge-character>span{font-size:clamp(44px,6vw,74px);line-height:1.25;font-family:'Noto Sans CJK SC','Microsoft Yahei','PingFang SC',sans-serif}
.bridge-character strong,.bridge-word strong{color:var(--accent);font-size:14px;font-weight:650}
.bridge-words{display:grid;grid-template-rows:1fr 1fr;gap:12px;min-width:0}
.bridge-word p{font-size:clamp(29px,3.4vw,39px)!important;color:var(--ink)!important;margin:0;line-height:1.4;overflow-wrap:anywhere}
.bridge-word mark{color:inherit;background:#dceecb;border-bottom:2px solid #699472;padding:0 1px}
:root[data-theme=dark] .bridge-word mark{background:#3e6845;border-bottom-color:#99c49c}
.bridge-word small,.bridge-character small,.bridge-sentence small{font-size:13px;color:var(--sub);overflow-wrap:anywhere}
.bridge-sentence{justify-content:center}
.bridge-sentence>p[lang]{font-size:clamp(22px,3vw,31px);line-height:1.55;color:var(--ink);margin-bottom:6px}
.bridge-sentence>p:not([lang]){font-size:13px;margin-bottom:0}
.consolidation-rows{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-bottom:15px}
.consolidation-row{border:1px solid var(--line);padding:13px 14px;min-width:0;display:grid;gap:6px}
.consolidation-row strong{font-size:13px}
.consolidation-row small{font-size:12px;color:var(--sub)}
.evidence-status{font-weight:650;font-size:12px;color:var(--sub)}
.evidence-status.independent{color:var(--accent)}
.evidence-status.assisted,.evidence-status.retry{color:var(--warning-ink)}
.content-continuation{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
@media(max-width:1050px){.bridge-teaching-flow{grid-template-columns:minmax(125px,.6fr) minmax(160px,1.35fr)}.bridge-sentence{grid-column:1/-1}}
@media(max-width:620px){.bridge-teaching-flow{grid-template-columns:1fr}.bridge-sentence{grid-column:auto}.bridge-character{flex-direction:row;justify-content:start;text-align:left;gap:14px}.bridge-character>span{font-size:54px}.bridge-words{grid-template-columns:1fr 1fr;grid-template-rows:auto}.bridge-word{padding:12px}.bridge-word p{font-size:30px!important}.consolidation-rows{grid-template-columns:1fr}.course-consolidation .panel-heading{align-items:flex-start;flex-wrap:wrap}.content-continuation>.button{flex:1}}
@media(prefers-reduced-motion:reduce){.learning-bridge *, .course-consolidation *{animation:none!important;transition:none!important}}
/* Batch 14 — connected Sentence Ladder; typography-first, no final visual lock. */
.ladder-intro,.ladder-active,.ladder-suggestions{margin-block:1.2rem}
.ladder-teaching{display:flex;align-items:center;gap:1.5rem;margin:1rem 0 1.5rem}
.ladder-large{font-size:clamp(3.5rem,7vw,6rem);line-height:1.2;font-family:system-ui,"Noto Sans SC",sans-serif}
.ladder-teaching h2{margin:.2rem 0}
.ladder-intro select{width:min(100%,39rem);padding:.8rem;border:1px solid var(--line,#c6cbc8);background:var(--surface,#fff);color:inherit;border-radius:.4rem;margin:.5rem 0 1.1rem}
.ladder-suggestion-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem}
.ladder-suggestion{display:flex;gap:.8rem;text-align:left;align-items:center;border:1px solid var(--line,#c6cbc8);border-radius:.35rem;padding:1rem;background:transparent;color:inherit;cursor:pointer;min-width:0}
.ladder-suggestion:hover,.ladder-suggestion:focus-visible{outline:2px solid currentColor;outline-offset:2px}
.ladder-suggestion>span:nth-child(2){min-width:0;flex:1;display:flex;flex-direction:column;gap:.3rem}
.ladder-suggestion small{display:block;color:var(--muted,#68736d);line-height:1.35}
.ladder-hanzi{font-size:2.1rem;line-height:1.3}
.ladder-active>h2{max-width:52rem;margin-top:1.1rem}
.ladder-chunks{display:flex;gap:.6rem;flex-wrap:wrap;margin:1rem 0}
.ladder-chunk{font-size:clamp(1.15rem,2.4vw,1.55rem);padding:.85rem 1.1rem;min-width:3rem;min-height:3.2rem}
.ladder-chunk:disabled{opacity:.38}
.ladder-built{min-height:5rem;display:flex;gap:.35rem;align-items:center;flex-wrap:wrap;border:1px dashed var(--line,#bdc7c0);padding:.7rem 1rem;border-radius:.3rem;font-size:clamp(1.3rem,3vw,1.85rem);margin:1rem 0}
.ladder-built span{padding:.25rem .45rem;background:var(--surface-secondary,#ecf1ee);border-radius:.2rem}
.ladder-active .course-bottom{margin-top:1.6rem}
@media(max-width:720px){.ladder-suggestion-grid{grid-template-columns:1fr}.ladder-teaching{align-items:flex-start;gap:1rem}.ladder-large{font-size:3.6rem}.ladder-active .button-row{gap:.55rem;flex-wrap:wrap}.ladder-active .button-row button{min-height:44px}}
@media(prefers-reduced-motion:reduce){.ladder-suggestion,.ladder-chunk{transition:none}}
/* Batch 14 contextual sense comparison, shown only after answering. */
.sense-contrast{margin-block:1.2rem}
.sense-compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin:1rem 0}
.sense-compare-grid article{border:1px solid var(--line,#c3cbc5);padding:1rem;border-radius:.35rem;min-width:0}
.sense-compare-grid article p{font-size:clamp(1.2rem,2.6vw,1.6rem);line-height:1.6;margin:0 0 .6rem}
.sense-compare-grid article small{display:block;line-height:1.5;margin-top:.55rem;color:var(--muted,#68736d)}
@media(max-width:640px){.sense-compare-grid{grid-template-columns:1fr}}
/* Batch 15: coherent multi-lesson blocks, accessible layouts without final branding lock. */
.study-block-promo{display:flex;justify-content:space-between;align-items:center;gap:22px;border-left:4px solid var(--accent,#315d52)}
.study-block-promo>div:first-child{max-width:650px}
.block-setup,.block-work{display:grid;gap:16px}.block-preview,.block-steps,.block-evidence{display:grid;gap:8px}
.block-preview>div,.block-step,.block-evidence>div{display:flex;align-items:center;gap:13px;padding:12px 14px;border:1px solid var(--border,#cbd5d1);border-radius:9px;min-width:0}
.block-preview>div>span,.block-step>span:first-child{flex:0 0 28px;font-weight:700;color:var(--muted,#51645d)}
.block-preview strong,.block-step>strong,.block-evidence span{font-size:1.65rem;font-weight:600;line-height:1.45}
.block-preview>div>div,.block-step>div{display:grid;gap:3px;flex:1;min-width:0}
.block-preview small,.block-step small,.block-evidence small{display:block;overflow-wrap:anywhere;color:var(--muted,#51645d)}
.block-step.active{border-color:var(--accent,#315d52);border-width:2px}.block-step.complete{opacity:.75}
.block-current{padding:18px;border:1px solid var(--border,#cbd5d1);border-radius:10px;background:var(--surface,#fff)}
.block-current h3 span{font-size:1.65em}.block-ready{border-left:3px solid #38816d;padding:10px;background:rgba(56,129,109,.09)}
.block-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;margin-bottom:14px}
.block-links>div{border:1px solid var(--border,#cbd5d1);padding:14px;border-radius:8px}.block-links p{overflow-wrap:anywhere}
.block-evidence{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.block-evidence>div{align-items:flex-start;flex-direction:column;gap:5px}
.block-resume-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 14px;margin-bottom:18px;border:1px solid var(--border,#cbd5d1);border-left:4px solid #38816d;border-radius:8px}
.block-setup .mode-tabs{flex-wrap:wrap}
@media (max-width:760px){.study-block-promo,.block-resume-bar{flex-direction:column;align-items:stretch}.block-step{flex-wrap:wrap}.block-step>small:last-child{margin-left:40px}.block-setup .button-row,.block-work .button-row{flex-wrap:wrap}.block-setup .button-row>*{min-height:44px}}
@media (prefers-reduced-motion:reduce){.block-step,.block-ready{transition:none}}

/* Batch 16 — context trail and diagnostic navigation */
.context-trail .trail-sentences{padding:1rem 1.1rem;border:1px solid var(--border,#cbd5d0);border-radius:.35rem;background:var(--surface-soft,#f3f6f4);font-size:clamp(1.15rem,2.7vw,1.55rem);line-height:1.8;overflow-wrap:anywhere}
.context-trail .trail-sentences p{margin:.35rem 0}
.context-trail .choice-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,16rem),1fr));gap:.6rem}
.context-trail .choice{min-height:3rem;white-space:normal;text-align:left;overflow-wrap:anywhere}
.context-trail .progress-rail{margin:.9rem 0 1.3rem}
.block-preview small{display:block;margin:.25rem 0;overflow-wrap:anywhere}
@media(max-width:620px){.context-trail .choice-list{grid-template-columns:1fr}.context-trail .trail-sentences{padding:.7rem}.context-trail .button-row{gap:.5rem;flex-wrap:wrap}}
/* Batch 17: compact editorial Fluency Studio, 320px-friendly without introducing a new design system. */
.fluency-start,.fluency-work,.fluency-analytics,.fluency-promo{max-width:100%;min-width:0}
.fluency-work h2{font-size:clamp(1.1rem,2vw,1.45rem);line-height:1.45}
.fluency-context{padding:1.1rem 1.2rem;margin:1rem 0;border-left:3px solid var(--accent,#567167);background:var(--surface-soft,#f1f4f1);overflow-wrap:anywhere}
.fluency-context p{font-size:clamp(1.15rem,2.6vw,1.7rem);line-height:1.8;margin:.35rem 0}
.fluency-context .fluency-hanzi{font-size:clamp(1.8rem,4vw,2.8rem);line-height:1.45}
.fluency-preview{margin:1.2rem 0;display:grid;gap:.4rem}
.fluency-preview>strong{margin-bottom:.45rem}
.fluency-preview-item{display:grid;grid-template-columns:9rem minmax(0,1fr) minmax(0,1fr);gap:.7rem;align-items:center;border-bottom:1px solid var(--line,#d7dfd9);padding:.65rem 0;min-width:0}
.fluency-preview-item span:nth-child(1){font-size:.7rem;font-weight:700;letter-spacing:.06em;color:var(--muted,#617269)}
.fluency-preview-item span:nth-child(2){overflow-wrap:anywhere;line-height:1.45}
.fluency-preview-item small{color:var(--muted,#617269);line-height:1.4}
.fluency-help{border:1px solid var(--line,#cbd8ce);padding:.9rem 1rem;display:flex;flex-direction:column;gap:.4rem;overflow-wrap:anywhere}
.fluency-bottom{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:1.5rem;padding-top:1rem;border-top:1px solid var(--line,#d7dfd9)}
.fluency-explanation{line-height:1.65}
.fluency-skill-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:.7rem;margin:1rem 0}
.fluency-skill{border:1px solid var(--line,#d7dfd9);padding:.75rem;display:flex;flex-direction:column;gap:.4rem}
.fluency-skill span{font-size:.83rem;color:var(--muted,#617269)}
.fluency-promo .button-row{margin-top:.9rem}
@media(max-width:680px){.fluency-preview-item{grid-template-columns:minmax(0,1fr);gap:.18rem}.fluency-preview-item small{font-size:.77rem}.fluency-skill-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.fluency-context{padding:.7rem}.fluency-work .choice-list{grid-template-columns:1fr}.fluency-bottom>.button-row{width:100%;flex-wrap:wrap}.fluency-bottom .button{flex:1}}
@media(max-width:360px){.fluency-skill-grid{grid-template-columns:1fr}.fluency-work .button-row{gap:.4rem}.fluency-work .button{max-width:100%}}

.fluency-contrast{border-top:1px solid var(--line,#d7dfd9);margin-top:1rem;padding-top:1rem}.fluency-contrast-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.65rem}.fluency-contrast-grid>div{min-width:0;padding:.8rem;border:1px solid var(--line,#d7dfd9);display:grid;gap:.35rem}.fluency-contrast-grid p{font-size:clamp(1.05rem,2vw,1.3rem);margin:.1rem 0;overflow-wrap:anywhere}.fluency-contrast-grid small{overflow-wrap:anywhere;color:var(--muted,#617269)}@media(max-width:400px){.fluency-contrast-grid{grid-template-columns:1fr}}

/* Batch 18: course-first navigation and daily learning plan. */
.more-tools{margin:8px 0;border-top:1px solid var(--line);padding-top:8px}.more-tools summary{font-size:12px;color:var(--sub);font-weight:600;padding:12px 16px;cursor:pointer;list-style-position:inside}.more-tools[open] .more-tools-links{display:grid}.more-tools-links a{font-size:12px}.more-tools summary:focus-visible{outline:3px solid var(--accent)}
.plan-summary{margin:18px 0}.plan-summary .status-tag{white-space:nowrap}.plan-today-items{display:flex;gap:8px;flex-wrap:wrap;margin:13px 0}.plan-today-items span{padding:7px 9px;background:var(--soft);border:1px solid var(--line);font-size:12px}.plan-today-items span.done{border-left:3px solid var(--accent)}
.plan-controls,.plan-task-list,.mistake-list{display:grid;gap:10px}.plan-config{display:grid;gap:20px;grid-template-columns:repeat(2,minmax(0,1fr))}.plan-config strong{display:block;margin-bottom:12px}.plan-config .button-row{display:flex;flex-wrap:wrap;gap:7px}.plan-task,.mistake-item{display:flex;align-items:center;gap:14px;padding:13px 16px;border:1px solid var(--line);background:var(--soft)}.plan-task-icon{font-size:20px;color:var(--accent);width:26px;flex:0 0 auto}.plan-task>div:nth-child(2),.mistake-item>div:first-child{flex:1;min-width:0}.plan-task strong,.mistake-item strong{display:block;overflow-wrap:anywhere}.plan-task p,.mistake-item small,.plan-task small{display:block;color:var(--sub);font-size:12px;margin:4px 0;line-height:1.5}.plan-task.done{border-left:3px solid var(--accent)}.plan-week{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.plan-week>div{background:var(--soft);border:1px solid var(--line);padding:13px;display:grid;gap:6px}.plan-week span{color:var(--sub);font-size:12px;line-height:1.5}.mistake-item .button-row{display:flex;flex-wrap:wrap;gap:6px}.plan-material-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.plan-material-grid article{background:var(--soft);border:1px solid var(--line);padding:17px}.plan-material-grid h3{margin:7px 0}.plan-tone-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(135px,1fr));gap:8px;margin:18px 0}.plan-tone-grid>div{background:var(--soft);border:1px solid var(--line);padding:12px}.plan-tone-grid strong,.plan-tone-grid small{display:block}.plan-tone-grid small{color:var(--sub);margin-top:7px;line-height:1.5}
@media(max-width:840px){.plan-config{grid-template-columns:1fr}.plan-task,.mistake-item{align-items:flex-start;flex-wrap:wrap}.plan-task>.button,.mistake-item>.button-row{margin-left:auto}}
@media(max-width:560px){.plan-week,.plan-material-grid{grid-template-columns:1fr}.plan-summary{padding:15px}.plan-task{padding:12px}.plan-task>div:nth-child(2){flex-basis:calc(100% - 45px)}.plan-task>.button{margin-left:40px}.mistake-item>.button-row{width:100%}.plan-config .button-row{gap:5px}}

.plan-rhythm{height:140px;display:flex;align-items:flex-end;gap:8px;padding:10px;background:var(--soft);border:1px solid var(--line)}.plan-rhythm>div{height:100%;display:flex;flex:1;min-width:0;flex-direction:column;justify-content:flex-end;align-items:center;gap:3px}.plan-rhythm-bar{display:block;background:var(--accent);width:min(75%,42px);min-height:4px;max-height:90px}.plan-rhythm small{font-size:10px;color:var(--sub)}.plan-rhythm b{font-size:10px}@media(max-width:380px){.plan-rhythm{gap:3px;padding:6px}.plan-rhythm small{font-size:8px}}

/* Batch 19 · Coherent course-first workspace (owner visual direction remains open). */
.hub-start{border:1px solid var(--line, #d5ded7);padding:clamp(1rem,3vw,2rem)}
.hub-home-heading{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;flex-wrap:wrap}
.hub-home-heading>div:first-child{flex:1 1 320px}
.hub-home-heading h2{font-size:clamp(1.65rem,3.2vw,2.5rem);line-height:1.15;margin:.3rem 0 .7rem}
.hub-home-heading p{max-width:56ch;margin-bottom:0}
.hub-home-buttons{display:flex;gap:.55rem;flex-wrap:wrap}
.hub-home-metrics{display:flex;gap:clamp(.6rem,2vw,2.5rem);border-top:1px solid var(--line,#d5ded7);margin-top:1.3rem;padding-top:1rem;flex-wrap:wrap}
.hub-home-metrics span{display:flex;align-items:baseline;gap:.4rem;color:var(--muted,#52635e)}
.hub-home-metrics b{font-size:1.35rem;color:var(--ink,#19332b)}
.hub-tasks{display:grid;gap:.7rem}
.hub-task{display:grid;grid-template-columns:2.75rem minmax(0,1fr) auto;align-items:center;gap:.85rem;padding:1rem;border:1px solid var(--line,#d5ded7);border-radius:.4rem}
.hub-task.recorded{background:var(--surface-soft,#f4f7f4)}
.hub-task-mark{font-size:1rem;font-weight:700;align-self:start;border:1px solid var(--line,#d5ded7);width:2.2rem;height:2.2rem;display:grid;place-items:center;border-radius:.3rem}
.hub-task h3{font-size:1.06rem;margin:.15rem 0 .3rem}
.hub-task p{margin:0 0 .25rem}
.hub-task small{display:block;color:var(--muted,#52635e)}
.hub-sessions{display:grid;gap:.4rem}
.hub-sessions>div{padding:.65rem 0;display:flex;justify-content:space-between;align-items:center;gap:1rem;border-bottom:1px solid var(--line,#d5ded7)}
.hub-sessions p{margin:.15rem 0}
.hub-next-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.7rem}
.hub-next-grid>div{border:1px solid var(--line,#d5ded7);padding:1rem;border-radius:.4rem;min-width:0}
.hub-next-grid h3{margin:.4rem 0;line-height:1.35}
.hub-next-grid p{min-height:2.7rem}
.hub-mistake{display:flex;justify-content:space-between;gap:.75rem;align-items:center;border-bottom:1px solid var(--line,#d5ded7);padding:.65rem 0}
.hub-mistake small{display:block;color:var(--muted,#52635e);margin-top:.2rem}
.hub-tools>details>summary{cursor:pointer;display:flex;flex-direction:column;gap:.2rem;padding:.4rem 0}
.hub-tools>details>summary:focus-visible,.hub-tool-grid a:focus-visible,.hub-path-nav a:focus-visible{outline:3px solid currentColor;outline-offset:3px}
.hub-tool-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(145px,1fr));gap:.65rem;padding-top:1rem}
.hub-tool-grid>a{border:1px solid var(--line,#d5ded7);padding:.75rem;color:inherit;text-decoration:none;border-radius:.35rem}
.hub-tool-grid small{color:var(--muted,#52635e);display:block;margin-top:.25rem}
.hub-compact .hub-primary-row{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;padding:.8rem 0}
.hub-compact .hub-primary-row>div{flex:1 1 300px}
.hub-compact .hub-primary-row p{margin:.25rem 0}
.hub-resume-strip{display:flex;gap:1rem;justify-content:space-between;align-items:center;flex-wrap:wrap;padding:.8rem 1rem;margin-bottom:.7rem;border:1px solid var(--line,#d5ded7);border-inline-start:4px solid currentColor}
.hub-resume-strip>div:first-child{display:grid;gap:.25rem}
.hub-resume-strip span{font-size:.85rem}
.hub-resume-buttons{display:flex;gap:.4rem;flex-wrap:wrap}
.hub-path-nav{display:flex;align-items:center;gap:.25rem;overflow-x:auto;scrollbar-width:thin;margin:0 0 1rem;padding:.45rem .2rem;white-space:nowrap}
.hub-path-label{font-size:.7rem;letter-spacing:.07em;font-weight:700;margin-right:.4rem;flex:none}
.hub-path-nav a{display:inline-block;padding:.45rem .7rem;text-decoration:none;color:inherit;border-radius:.25rem;font-size:.87rem}
.hub-path-nav a[aria-current="page"]{background:var(--surface-soft,#e7eee8);font-weight:700;text-decoration:underline;text-underline-offset:.2rem}
@media(max-width:760px){.hub-next-grid{grid-template-columns:1fr}.hub-next-grid p{min-height:0}.hub-task{grid-template-columns:2rem minmax(0,1fr)}.hub-task>.button{grid-column:2;justify-self:start}.hub-home-buttons{width:100%}.hub-home-buttons>.button{flex:1}.hub-task-mark{width:1.9rem;height:1.9rem}.hub-sessions>div{align-items:flex-start;flex-wrap:wrap}.hub-path-nav{display:none}.hub-path-label{display:none}}
@media(prefers-reduced-motion:reduce){.hub-tool-grid a,.hub-task{transition:none!important}}

/* Batch 20: consolidated continuity, recovery and safer data restore. */
.finish-evidence{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.6rem;margin:1.2rem 0}
.finish-evidence>div{background:var(--soft);border:1px solid var(--line);padding:.9rem;min-width:0}
.finish-evidence strong{font-size:clamp(1.3rem,2vw,1.8rem);font-variant-numeric:tabular-nums;display:block}
.finish-evidence span,.finish-shortcuts small{font-size:.8rem;display:block;color:var(--sub);line-height:1.4}
.finish-shortcuts{display:grid;gap:.5rem;margin:1rem 0}
.finish-shortcuts>div{display:flex;align-items:center;gap:.75rem;justify-content:space-between;padding:.7rem 0;border-bottom:1px solid var(--line)}
.finish-shortcuts>div>div{min-width:0}.finish-shortcuts strong{display:block;margin-bottom:.2rem}
.finish-compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem;margin:1.2rem 0}
.finish-compare>div{min-width:0;border:1px solid var(--line);background:var(--soft);padding:1rem}
.finish-compare p{margin:.45rem 0;font-size:.85rem}
.finish-warning{border-left:4px solid #a65f2d;padding:.9rem 1rem;background:var(--soft)}
.finish-warning ul{padding-left:1.4rem;margin:.6rem 0 0}
#restore-ack{padding:.7rem;border:1px solid var(--line);color:var(--ink);background:var(--surface);min-height:44px;max-width:100%;width:10rem}
[data-hanzi-size="large"] .big-hanzi,[data-hanzi-size="large"] .hero-hanzi,[data-hanzi-size="large"] .detail-character{font-size:clamp(105px,14vw,155px)}
[data-hanzi-size="large"] .sentence-hanzi,[data-hanzi-size="large"] .reader-passage,[data-hanzi-size="large"] .dialogue-chinese,[data-hanzi-size="large"] .word-hanzi{font-size:clamp(29px,5vw,45px)}
[data-hanzi-size="large"] .review-hanzi,[data-hanzi-size="large"] .practice-hanzi{font-size:clamp(57px,11vw,115px)}
@media(max-width:700px){.finish-evidence{grid-template-columns:repeat(2,minmax(0,1fr))}.finish-compare{grid-template-columns:1fr}.finish-shortcuts>div{align-items:flex-start;flex-wrap:wrap}.finish-shortcuts .button{margin-left:auto}}
@media(max-width:350px){.finish-evidence{grid-template-columns:1fr 1fr}.finish-evidence>div{padding:.5rem}}

/* Course links remain keyboard-accessible on narrow screens instead of vanishing. */
@media(max-width:760px){.hub-path-nav{display:flex;overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:thin;border-bottom:1px solid var(--line);padding:.6rem .2rem}.hub-path-nav a{flex:0 0 auto;min-height:42px;display:grid;place-items:center}.hub-path-label{display:inline-block}}
@media(max-width:420px){.finish-overview .panel-heading,.finish-recovery .panel-heading{align-items:flex-start;flex-direction:column}.finish-overview,.finish-recovery,.finish-backup-preview{padding:1rem}.finish-shortcuts .button{min-height:44px}}