:root{--ink:#17322f;--muted:#748681;--green:#21493d;--green2:#356e59;--accent:#ddedbb;--amber:#f6c675;--coral:#e99b8b;--blue:#bfd9f2;--line:#e4e9e3;--paper:#fafaf7;--soft:#f1f4ee;--white:#fff;--radius:26px;--shadow:0 22px 70px -48px #1b39376b}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:'Noto Kufi Arabic',Tahoma,'Segoe UI',sans-serif;font-size:13px}button,input,select{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #7ba58b;outline-offset:3px}button{border:0}a{text-decoration:none;color:inherit}svg{width:100%;height:100%}h1,h2,h3,p{margin:0}h1{font-size:clamp(30px,3.7vw,52px);line-height:1.45;font-weight:800;letter-spacing:-1.4px}h2{font-size:clamp(23px,2.7vw,36px);font-weight:800;line-height:1.5;letter-spacing:-.8px}h3{font-size:18px;font-weight:800}small{font-size:11px}input,select{border:1px solid var(--line);background:white;color:var(--ink);padding:14px;border-radius:13px;min-width:0}input::placeholder{color:#99a7a1}button:disabled{opacity:.45;cursor:not-allowed}.site-header{height:92px;max-width:1440px;margin:auto;padding:0 38px;display:flex;align-items:center;gap:22px}.brand{display:flex;align-items:center;gap:12px;min-width:220px}.brand img{width:49px;height:49px;border-radius:13px;box-shadow:0 10px 23px #1c443629}.brand strong{display:block;font:800 18px/1.2 Inter,Arial,sans-serif;letter-spacing:.6px}.brand strong em{font-style:normal;color:#76a389}.brand small{display:block;color:var(--muted);margin-top:5px;font-size:10px}.desktop-navigation{margin:auto;display:flex;align-items:center;gap:3px;border:1px solid #ebede8;padding:6px;background:white;border-radius:100px;box-shadow:0 7px 30px #1c44360d}.desktop-navigation button{white-space:nowrap;padding:12px 15px;border-radius:40px;background:transparent;color:#60736a;font-size:12px;font-weight:700;transition:.2s}.desktop-navigation button.selected,.desktop-navigation button:hover{background:var(--green);color:white}.header-tools{display:flex;align-items:center;gap:10px}.header-search{display:flex;align-items:center;gap:8px;padding:10px 13px;background:#fff;color:#7e9189;border:1px solid var(--line);border-radius:100px;white-space:nowrap;font-size:11px}.header-search svg{width:18px;height:18px}.avatar{display:grid;place-items:center;width:43px;height:43px;background:var(--accent);color:#173d2d;border-radius:50%;font-weight:900;font-size:16px}.mobile-navigation{display:none}main{max-width:1368px;padding:22px 30px 90px;margin:0 auto;min-height:65vh}.eyebrow{display:flex;align-items:center;gap:9px;color:#57816f;font-weight:800;font-size:11px;letter-spacing:.1px}.eyebrow:before{content:'';display:block;width:7px;height:7px;background:#80b393;border-radius:50%}.heading{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:26px}.heading p{color:var(--muted);margin-top:7px;line-height:1.9}.subtle{color:var(--muted)}.overline{font-weight:800;color:#668577;font-size:11px}.pill{border-radius:100px;border:1px solid #dfe8d9;color:#456a57;background:#f2f8ed;padding:7px 13px;display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:800}.btn{display:inline-flex;gap:9px;justify-content:center;align-items:center;padding:14px 21px;min-height:46px;background:#f0f3ee;color:var(--ink);border-radius:14px;font-weight:850;font-size:12px;transition:transform .22s,background .22s,box-shadow .22s}.btn:hover{transform:translateY(-2px);box-shadow:0 10px 25px -15px #153a35}.btn.primary{background:var(--green);color:#fff}.btn.lime{background:#d9f099;color:#19352b}.btn.outline{background:#fff;border:1px solid var(--line)}.btn.small{padding:9px 14px;min-height:39px}.btn.round{width:46px;height:46px;padding:0;border-radius:50%}.backline{display:flex;align-items:center;gap:10px;color:var(--muted);margin-bottom:25px}.statline{font-family:Inter,Arial,sans-serif;font-feature-settings:'tnum'}
/* Home: deliberate editorial rhythm rather than dashboard cards */
.welcome-line{display:flex;align-items:center;justify-content:space-between;margin:15px 0 23px}.welcome-line h1{font-size:clamp(27px,3vw,39px)}.welcome-line p{color:var(--muted);margin-top:3px}.today-hero{min-height:440px;border-radius:34px;overflow:hidden;background:var(--green);display:grid;grid-template-columns:1.03fr .97fr;color:white;position:relative}.hero-copy{padding:52px 55px;display:flex;flex-direction:column;align-items:flex-start;position:relative;z-index:2}.hero-copy .micro{font-size:11px;color:#b8d7c5;letter-spacing:.5px}.hero-copy h2{font-size:clamp(33px,4vw,57px);margin-top:17px;line-height:1.5;font-weight:850}.hero-copy p{color:#d7e8df;font-size:13px;line-height:2.25;max-width:460px;margin-top:13px}.hero-copy .term{display:flex;gap:10px;align-items:center;margin-top:22px;font-size:13px}.hero-copy .term b{font-family:'Noto Serif CJK SC','Noto Sans CJK SC',serif;font-size:27px}.hero-copy .term span{color:#e0eccc}.hero-cta{display:flex;align-items:center;gap:15px;margin-top:auto;padding-top:34px}.hero-art{position:relative;min-height:440px;overflow:hidden;background:radial-gradient(circle at 52% 45%,#3d7464 0%,#2d6254 32%,#204638 68%)}.hero-art:before,.hero-art:after{content:'';position:absolute;inset:0;border:1px solid #ffffff16;border-radius:50%;width:470px;height:470px;margin:auto;transform:translate(0,10px)}.hero-art:after{width:350px;height:350px;border-color:#ffffff30;transform:translate(0,10px)}.hanzi-glow{font-family:'Noto Serif CJK SC','Noto Sans CJK SC',serif;font-weight:600;font-size:clamp(155px,19vw,290px);position:absolute;inset:15px 0 0;display:flex;align-items:center;justify-content:center;color:#f7f9ec;text-shadow:0 20px 50px #06252030;letter-spacing:-30px;padding-left:25px}.curve-stroke{position:absolute;left:-20%;bottom:-10%;width:125%;height:50%;border:1px solid #c4ebcc25;border-radius:60% 45% 0 0;transform:rotate(-13deg)}.tiny-star{position:absolute;color:#e0eb9a;font-size:35px;top:16%;right:25%}.floating-study{position:absolute;right:9%;bottom:25px;border-radius:100px;color:#e0f0e6;background:#ffffff1d;border:1px solid #ffffff36;backdrop-filter:blur(8px);padding:10px 18px;direction:ltr;font:600 13px Inter,Arial}.learning-strip{margin-top:31px;display:grid;grid-template-columns:1fr 1.1fr .95fr;gap:18px}.mini-section{padding:26px 27px;background:white;border:1px solid var(--line);border-radius:24px;min-height:164px}.mini-section.green{background:#e9f1e5;border-color:#e9f1e5}.mini-section.peach{background:#f5ece6;border-color:#f5ece6}.mini-section .top{display:flex;align-items:center;justify-content:space-between;font-size:12px;font-weight:800}.mini-section .big{font-size:29px;font-family:Inter,'Noto Kufi Arabic';font-weight:800;line-height:1.9}.mini-section p{font-size:11px;color:#78847c;line-height:2}.meter{height:7px;background:#d5e3d8;border-radius:30px;overflow:hidden;margin-top:15px}.meter i{display:block;height:100%;background:#467a63;border-radius:30px}.home-bottom{display:grid;grid-template-columns:1.12fr .88fr;gap:38px;margin:46px 4px 0}.segment-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.segment-title h3{font-size:21px}.text-link{background:transparent;color:#43765c;font-weight:800}.day-row{display:flex;align-items:center;border-bottom:1px solid #e5eae3;padding:16px 3px;gap:19px}.day-no{width:50px;height:50px;border-radius:16px;background:#e7ece4;display:grid;place-items:center;font:750 16px Inter;direction:ltr;flex-shrink:0}.day-row.active .day-no{color:white;background:#204638}.day-row strong{display:block;font-size:12px}.day-row p{font-size:11px;color:var(--muted);margin-top:3px}.day-row .end{margin-right:auto;color:#70947e;font-size:11px}.library-peek{background:#e7eddf;border-radius:28px;position:relative;padding:35px;overflow:hidden;min-height:300px}.library-peek:before{content:'字';font:300 210px 'Noto Serif CJK SC',serif;position:absolute;left:5px;bottom:-55px;color:#d0dfcd;transform:rotate(-15deg)}.library-peek h2{font-size:29px;max-width:230px;position:relative}.library-peek p{margin:14px 0 26px;line-height:2.2;max-width:250px;color:#678070;position:relative}.library-peek button{position:relative}
/* Common interior */
.surface{background:white;border:1px solid var(--line);border-radius:var(--radius)}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:24px}.muted-chip{display:inline-flex;border-radius:100px;background:#f2f5ef;padding:9px 14px;color:#617b6e;font-weight:700;font-size:11px}.section-pad{padding:34px}.content-intro{margin-bottom:24px}.section-top{margin-bottom:22px;display:flex;align-items:center;justify-content:space-between;gap:15px}.section-top h2{font-size:26px}.section-top p{color:var(--muted);line-height:1.9;margin-top:5px}.days-journal{display:grid;grid-template-columns:320px 1fr;gap:24px}.journal-rail{padding:27px;background:#edf3e8;border-radius:26px;align-self:start}.journal-rail h3{font-size:23px;margin:10px 0}.journal-rail p{color:#71877a;line-height:2}.journal-rail .days-number{font:800 55px Inter,Arial;direction:ltr;margin:19px 0 1px;text-align:right}.journal-rail .soft{color:#71877a}.timeline{padding:24px 34px}.timeline-item{position:relative;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:21px;padding:20px 0}.timeline-item:last-child{border:0}.timeline-item .marker{width:54px;height:54px;border-radius:18px;flex-shrink:0;background:#f1f4ec;display:grid;place-items:center;font:750 17px Inter;position:relative}.timeline-item.done .marker{background:#dff0d2;color:#387054}.timeline-item.now .marker{background:#254e40;color:#f1f7df}.timeline-item h3{font-size:15px}.timeline-item p{font-size:11px;line-height:1.8;color:var(--muted);margin-top:5px}.timeline-item .stage{margin-right:auto;white-space:nowrap;font-size:10px;color:#639079;font-weight:750}.locked{opacity:.55}.goal-editor{margin-top:23px;display:flex;gap:7px;flex-wrap:wrap}.goal-editor button{background:white;border:1px solid #dae3d9;color:#4e6f5c;padding:10px 13px;border-radius:12px;font-weight:800}.goal-editor button.on{background:#244b3e;color:white}
/* Lesson page */
.lesson-intro{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.lesson-intro span{color:var(--muted)}.lesson-shell{background:white;border:1px solid var(--line);border-radius:30px;overflow:hidden;box-shadow:var(--shadow)}.lesson-steps{display:flex;gap:0;align-items:center;border-bottom:1px solid var(--line);padding:0 31px}.lesson-steps button{background:transparent;padding:22px 23px;border-bottom:3px solid transparent;color:#83938a;font-weight:850;font-size:12px}.lesson-steps button.on{border-color:#31674c;color:var(--ink)}.lesson-columns{display:grid;grid-template-columns:1fr 1fr;min-height:470px}.lesson-text{padding:47px;display:flex;flex-direction:column;align-items:flex-start}.hanzi-big{font-size:100px;line-height:1.3;font-family:'Noto Serif CJK SC','Noto Sans CJK SC',serif;letter-spacing:2px}.pinyin{font:700 22px Inter,Arial;direction:ltr;color:#47715a;display:inline-block}.meaning{font-size:27px;font-weight:850;margin:10px 0 8px}.lesson-text p{max-width:440px;line-height:2.2;color:#73857a;font-size:12px}.tool-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:21px}.visual-panel{position:relative;min-height:450px;background:#e9f1eb;overflow:hidden;display:grid;place-items:center}.illustration{width:100%;height:100%;min-height:370px;display:grid;place-items:center}.illustration svg{max-width:550px;max-height:400px}.visual-bubble{position:absolute;bottom:20px;left:20px;right:20px;display:flex;gap:8px;justify-content:center;flex-wrap:wrap}.visual-bubble span{border:1px solid #ffffffb5;border-radius:100px;padding:8px 16px;background:#ffffffd1;color:#466a55;font-weight:800;font-size:11px}.lesson-foot{display:flex;justify-content:space-between;align-items:center;padding:20px 30px;border-top:1px solid var(--line)}.lesson-progress{width:225px;height:7px;border-radius:20px;background:#e9eee6;overflow:hidden}.lesson-progress b{height:100%;display:block;background:#5a8a68}.interactive-tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin-top:18px}.interactive-tiles button{min-height:95px;border:1px solid var(--line);background:white;border-radius:17px;font-weight:800;color:var(--ink);padding:15px}.interactive-tiles button.correct{background:#dff0d3;border-color:#80b878}.interactive-tiles button.wrong{background:#ffebe5;border-color:#f0a998}.tone-rail{display:flex;gap:9px;align-items:center;margin-top:14px}.tone-rail button{background:#eff4e9;padding:11px 17px;border-radius:10px;color:#41624c;font-weight:800}.tone-rail button.on{background:#d5eaa8}.pill-demo{margin-top:12px;color:#9b7b55;font-size:11px}
/* Stroke and manual writing */
.writing-panel{display:grid;grid-template-columns:1fr .94fr;gap:28px;padding:29px}.stroke-zone{position:relative;background:#f8faf6;border:1px solid #e0e9dd;border-radius:23px;min-height:375px;display:grid;place-items:center;overflow:hidden}.stroke-zone svg{width:min(380px,100%);height:340px}.stroke-zone canvas{position:absolute;inset:0;width:100%;height:100%;touch-action:none}.writing-info{padding:15px 6px}.writing-info h3{font-size:23px}.writing-info p{line-height:2.1;margin:10px 0;color:var(--muted)}.note-good,.note-bad,.note-neutral{padding:15px;border-radius:15px;font-weight:750;margin-top:20px;font-size:12px}.note-good{background:#e3f3d8;color:#28643d}.note-bad{background:#feece7;color:#b54c3a}.note-neutral{background:#f2f5ed;color:#54745f}.stroke-controls{display:flex;gap:9px;flex-wrap:wrap;margin-top:17px}.stroke-controls button{padding:12px 15px;background:#edf3e9;border-radius:12px;color:#264a37;font-weight:750}.stroke-controls button.primary{background:#244b3e;color:#fff}.stroke-guide-legend{display:flex;gap:16px;margin:16px 0;font-size:11px;color:#698474}.stroke-guide-legend span:before{content:'●';margin-left:6px;color:#efab71}.stroke-guide-legend span:last-child:before{color:#3c8166}
/* Games / refined visual variety */
.games-intro{border-radius:31px;display:grid;grid-template-columns:1fr .82fr;overflow:hidden;background:#e4efe5;min-height:235px}.games-intro .copy{padding:36px 40px}.games-intro .copy p{line-height:2.1;color:#658070;max-width:450px;margin-top:12px}.games-decoration{position:relative;display:grid;place-items:center;overflow:hidden}.games-decoration:before{content:'';position:absolute;width:280px;height:280px;border-radius:50%;border:1px solid #b5d1ba;box-shadow:0 0 0 35px #cee5d33b,0 0 0 75px #cee5d335}.games-decoration b{z-index:1;font:700 140px 'Noto Serif CJK SC';color:#386b51;transform:rotate(-10deg)}.game-gallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px;margin:24px 0}.game-tile{text-align:right;background:white;border-radius:22px;border:1px solid var(--line);padding:23px;min-height:170px;transition:.2s;position:relative;overflow:hidden}.game-tile:hover{transform:translateY(-4px);border-color:#b7d1b7;box-shadow:var(--shadow)}.game-tile .symbol{width:50px;height:50px;display:grid;place-items:center;border-radius:16px;background:#e9f4e7;color:#3a7355;font-size:24px;margin-bottom:18px}.game-tile:nth-child(4n+2) .symbol{background:#fff2dc;color:#b98b3f}.game-tile:nth-child(4n+3) .symbol{background:#e8eff9;color:#5178ac}.game-tile:nth-child(4n+4) .symbol{background:#fbece6;color:#c6826b}.game-tile strong{display:block;font-size:13px}.game-tile p{color:var(--muted);font-size:10px;line-height:1.8;margin-top:7px}.game-running{max-width:840px;margin:0 auto}.quiz-box{background:white;border:1px solid var(--line);border-radius:30px;padding:35px 40px;min-height:420px;box-shadow:var(--shadow)}.quiz-top{display:flex;justify-content:space-between;align-items:center;gap:13px;margin-bottom:25px}.quiz-top span{color:var(--muted);font-size:11px}.quiz-prompt{text-align:center;display:flex;flex-direction:column;align-items:center;gap:8px}.quiz-prompt .big{font-family:'Noto Serif CJK SC','Noto Sans CJK SC';font-size:83px;line-height:1.45}.quiz-prompt .question{font-size:19px;font-weight:800}.quiz-options{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:30px}.quiz-options button{min-height:80px;border-radius:17px;background:#f8f9f6;border:1px solid #e3e9e0;font-size:15px;font-weight:800;color:var(--ink)}.quiz-options button.right{background:#dff5d4;border-color:#96ce89}.quiz-options button.bad{background:#ffe8e1;border-color:#f4a89b;animation:shake .35s}.feedback{display:flex;align-items:center;justify-content:space-between;border-radius:16px;padding:15px 20px;margin-top:18px;font-weight:850;gap:12px}.feedback.right{background:#e4f5db;color:#367347}.feedback.bad{background:#fff0e8;color:#b25a49}.session-result{text-align:center;max-width:800px;margin:auto;background:white;border:1px solid var(--line);border-radius:29px;padding:40px}.session-result .medal{font-size:58px}.session-result h2{margin:12px 0}.result-numbers{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0}.result-numbers div{padding:20px;border-radius:15px;background:#f4f7f2}.result-numbers strong{display:block;font:800 28px Inter}.result-numbers small{color:#6b7c73}
/* Dictionary and learning library */
.lib-tabs{display:flex;gap:7px;flex-wrap:wrap;margin:15px 0 24px}.lib-tabs button{background:#eef2eb;padding:12px 21px;border-radius:100px;color:#587364;font-weight:800}.lib-tabs button.on{color:white;background:var(--green)}.search-wide{display:flex;align-items:center;gap:12px;border:1px solid #dce7db;border-radius:18px;background:white;padding:8px 15px}.search-wide input{width:100%;border:0;outline:none;font-size:13px;padding:12px}.search-wide span{font-size:21px;color:#6c8b75}.dictionary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-top:19px}.dictionary-entry{display:flex;gap:13px;text-align:right;padding:19px;background:white;border:1px solid var(--line);border-radius:18px;align-items:center}.dictionary-entry:hover{border-color:#9bbda5}.dict-hanzi{font:650 33px 'Noto Serif CJK SC','Noto Sans CJK SC';min-width:62px;text-align:center}.dictionary-entry .info{flex:1;min-width:0}.dictionary-entry strong{font-size:13px}.dictionary-entry p{font:600 11px Inter;margin-top:6px;color:#799083}.dictionary-entry .save{background:#f2f4ef;padding:8px 12px;border-radius:12px;color:#6d856f}.dictionary-entry .save.active{background:#fff0d2;color:#b58c32}.catalog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.catalog-card{border-radius:23px;background:#fff;border:1px solid var(--line);padding:25px;min-height:170px}.catalog-card .glyph{font-size:28px;margin-bottom:18px}.catalog-card h3{font-size:15px}.catalog-card p{font-size:11px;line-height:1.8;color:var(--muted);margin-top:7px}.catalog-card .count{font:700 11px Inter;color:#4d866c;margin-top:16px}.specialty-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.specialty{background:#fff;border:1px solid var(--line);padding:19px 14px;border-radius:16px;display:flex;gap:12px;align-items:center;font-weight:750;text-align:right;color:var(--ink)}.specialty span{font-size:21px}.specialty:hover{background:#ecf5eb;border-color:#b5d4b7}
/* Progress */
.progress-hero{display:grid;grid-template-columns:1fr 1.1fr;gap:25px}.progress-highlight{border-radius:27px;background:var(--green);padding:36px;color:white}.progress-highlight h2{font-size:29px}.progress-highlight p{color:#c9e3d2;line-height:2;margin-top:9px}.hero-stat{font:800 58px Inter;letter-spacing:-2px;margin-top:25px}.progress-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}.progress-cards .metric{background:#fff;border:1px solid var(--line);padding:25px;border-radius:23px}.progress-cards .metric strong{display:block;font:800 29px Inter}.progress-cards .metric p{color:#778c7e;margin-top:7px;font-size:11px}.charts-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:24px}.chart-wrap{background:white;border:1px solid var(--line);border-radius:25px;padding:28px}.chart-wrap h3{font-size:16px}.chart-wrap p{color:var(--muted);font-size:11px;margin:7px 0 12px}.chart-wrap svg{height:192px;width:100%;overflow:visible}.empty-state{margin:10px 0;color:#84948a;font-size:11px}.stats-log{margin-top:20px;background:#fff;border:1px solid var(--line);padding:27px;border-radius:22px}.log-item{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #edf0ea;padding:13px 0;gap:10px}.log-item:last-child{border-bottom:0}
/* Modal and status */
#overlay:empty{display:none}#overlay{position:fixed;inset:0;background:#1028218a;backdrop-filter:blur(5px);z-index:80;display:flex;align-items:center;justify-content:center;padding:20px}.modal{width:min(560px,100%);max-height:88vh;overflow:auto;background:white;padding:34px;border-radius:30px;box-shadow:0 25px 100px #0004}.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.modal h2{font-size:26px}.modal-close{width:40px;height:40px;background:#f3f5f0;border-radius:50%;font-size:18px}.formline{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin:15px 0}.formline label{display:grid;gap:7px;font-size:11px;font-weight:800}.formline label.wide{grid-column:span 2}.modal p{color:var(--muted);line-height:2}.modal .actions{display:flex;gap:10px;justify-content:flex-start;margin-top:22px;flex-wrap:wrap}#toast{pointer-events:none;position:fixed;z-index:100;bottom:22px;left:24px;transform:translateY(100px);opacity:0;transition:.3s;background:#1c463a;color:white;padding:13px 20px;border-radius:14px;box-shadow:0 12px 45px #1e423a30;font-weight:800;font-size:12px}#toast.show{opacity:1;transform:translateY(0)}#celebration{pointer-events:none;position:fixed;inset:0;z-index:90;overflow:hidden}.confetti{position:absolute;width:9px;height:17px;animation:fall 1.35s forwards ease-in;transform:rotate(18deg)}@keyframes fall{from{transform:translateY(-40px) rotate(0);opacity:1}to{transform:translateY(80vh) rotate(620deg);opacity:0}}@keyframes shake{0%,100%{transform:translateX(0)}20%,60%{transform:translateX(6px)}40%,80%{transform:translateX(-6px)}}
@media(max-width:1150px){.site-header{padding:0 20px}.brand{min-width:auto}.desktop-navigation button{padding:11px 9px}.header-search span{display:none}.hero-copy{padding:35px}.hero-art{min-height:380px}.today-hero{min-height:380px}.hanzi-glow{font-size:170px}}
@media(max-width:850px){main{padding:16px 19px 108px}.site-header{height:78px}.desktop-navigation{display:none}.brand small{display:none}.header-tools{margin-right:auto}.mobile-navigation{display:flex;position:fixed;bottom:0;right:0;left:0;z-index:60;justify-content:space-around;align-items:center;background:#ffffffec;backdrop-filter:blur(18px);border-top:1px solid #e7ece6;padding:9px 5px max(10px,env(safe-area-inset-bottom));box-shadow:0 -12px 33px #123c3510}.mobile-navigation button{background:transparent;color:#829087;display:grid;gap:1px;place-items:center;min-width:52px;min-height:46px}.mobile-navigation button span{font-size:21px}.mobile-navigation button small{font-size:10px;font-weight:750}.mobile-navigation button.selected{color:#275f44}.today-hero{grid-template-columns:1fr 1fr}.hero-art{min-height:360px}.hero-copy h2{font-size:34px}.learning-strip{grid-template-columns:1fr 1fr}.learning-strip .mini-section:last-child{grid-column:span 2}.home-bottom{grid-template-columns:1fr}.days-journal{grid-template-columns:1fr}.journal-rail{display:grid;grid-template-columns:1fr auto;align-items:center}.journal-rail .goal-editor{grid-column:span 2}.lesson-columns{grid-template-columns:1fr}.visual-panel{min-height:320px;order:1}.lesson-text{order:0}.game-gallery{grid-template-columns:repeat(2,1fr)}.dictionary-grid{grid-template-columns:repeat(2,1fr)}.specialty-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:560px){.site-header{padding:0 15px;height:70px}.brand img{width:42px;height:42px}.brand strong{font-size:15px}.header-search{padding:10px;width:40px;height:40px}.avatar{width:39px;height:39px}.heading{align-items:start;flex-direction:column}.welcome-line{align-items:flex-start;flex-direction:column;gap:10px}.welcome-line h1{font-size:26px}.today-hero{display:flex;flex-direction:column;min-height:0;border-radius:25px}.hero-copy{padding:27px 26px 30px}.hero-copy h2{font-size:35px;margin-top:8px}.hero-copy p{font-size:11px}.hero-copy .term{margin-top:9px}.hero-cta{padding-top:24px}.hero-art{min-height:250px;order:-1}.hero-art:before{width:290px;height:290px}.hero-art:after{width:205px;height:205px}.hanzi-glow{font-size:150px;letter-spacing:-18px}.floating-study{bottom:14px}.learning-strip{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px}.learning-strip .mini-section:last-child{grid-column:span 2}.mini-section{min-height:120px;padding:18px 15px;border-radius:18px}.mini-section .big{font-size:23px}.mini-section p{font-size:10px}.home-bottom{margin:30px 0 0;gap:23px}.library-peek{min-height:255px}.segment-title h3{font-size:18px}.lesson-steps{padding:0 8px;overflow-x:auto}.lesson-steps button{padding:17px 12px;white-space:nowrap;font-size:11px}.lesson-text{padding:25px}.hanzi-big{font-size:74px}.meaning{font-size:23px}.visual-panel{min-height:280px}.illustration{min-height:275px}.illustration svg{max-height:280px}.lesson-foot{padding:17px;gap:10px}.lesson-progress{width:80px}.interactive-tiles{grid-template-columns:1fr 1fr}.interactive-tiles button{min-height:75px}.writing-panel{grid-template-columns:1fr;padding:15px;gap:10px}.stroke-zone{min-height:320px}.stroke-zone svg{height:290px}.writing-info h3{font-size:20px}.games-intro{display:block}.games-intro .copy{padding:27px}.games-decoration{display:none}.game-gallery{gap:9px}.game-tile{min-height:160px;padding:17px}.game-tile .symbol{width:44px;height:44px;margin-bottom:12px}.quiz-box{padding:25px 17px}.quiz-prompt .big{font-size:70px}.quiz-options{gap:8px}.quiz-options button{min-height:67px;font-size:13px}.dictionary-grid,.catalog-grid{grid-template-columns:1fr}.specialty-grid{grid-template-columns:1fr 1fr;gap:8px}.specialty{padding:13px;font-size:11px}.progress-hero,.charts-grid{grid-template-columns:1fr}.progress-highlight{padding:25px}.progress-cards .metric{padding:17px}.result-numbers div{padding:12px}.modal{padding:22px;border-radius:20px}.formline{grid-template-columns:1fr}.formline label.wide{grid-column:auto}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}
/* 320px accessibility and narrow screens: no page-level horizontal spill */
.days-journal,.journal-rail,.timeline,.timeline-item,.journal-rail>*,.timeline-item>div{min-width:0}
@media(max-width:560px){.days-journal{grid-template-columns:minmax(0,1fr)}.journal-rail{display:block;padding:21px}.journal-rail .days-number{font-size:43px}.journal-rail .goal-editor{display:flex}.timeline{padding:16px}.timeline-item{gap:10px;flex-wrap:wrap}.timeline-item .marker{width:43px;height:43px;border-radius:13px}.timeline-item .stage{margin-right:auto}.timeline-item h3{font-size:12px}}

/* V10: accessible preferences, offline status and retained AURORA palettes */
:root{--arabic-scale:1;--chinese-scale:1}body{font-size:calc(13px * var(--arabic-scale))}:lang(zh){font-size:calc(100% * var(--chinese-scale))}
.icon-button{display:grid;place-items:center;width:41px;height:41px;border:1px solid var(--line);border-radius:50%;background:#fff;color:var(--green);font-weight:900}
.btn.danger{background:#fff0ec;color:#a44032;border:1px solid #efc2b9}
.offline-progress{margin-top:12px;padding:12px 14px;border:1px solid var(--line);background:var(--soft);border-radius:13px;color:var(--muted);font-weight:750;line-height:1.7;word-break:break-word}
.pinyin-lab{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;min-width:0}.pinyin-work,.pinyin-keys{min-width:0;background:#fff;border:1px solid var(--line);border-radius:24px;padding:25px}.pinyin-composed{min-height:92px;padding:18px;border-radius:17px;background:var(--soft);font:600 39px/1.7 'Noto Serif CJK SC','Noto Sans CJK SC',serif;color:var(--ink);word-break:break-word}.pinyin-input-row{display:flex;min-width:0;gap:8px;margin-top:13px}.pinyin-input-row input{flex:1;width:0;font:600 18px Inter,Arial,sans-serif}.pinyin-filter{display:flex;align-items:center;gap:7px;margin:12px 0;color:var(--muted);font-weight:750}.pinyin-candidates{display:grid;grid-template-columns:1fr 1fr;gap:8px;min-height:76px}.pinyin-candidates button{text-align:right;padding:11px;border-radius:12px;background:#f4f6f1;color:var(--ink)}.pinyin-candidates b,.pinyin-candidates span{display:block}.pinyin-candidates b{font:600 25px 'Noto Serif CJK SC','Noto Sans CJK SC',serif}.pinyin-candidates span{font-size:10px;color:var(--muted);margin-top:3px}.pinyin-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.pinyin-keys{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:7px;align-content:start}.pinyin-keys button{min-width:0;min-height:43px;border-radius:10px;background:var(--soft);color:var(--ink);font:700 13px Inter,Arial}.pinyin-keys button:hover{background:var(--accent)}.pinyin-keys .space{grid-column:span 6}html[data-appearance=dark] :is(.pinyin-work,.pinyin-keys){background:#1a2723}@media(prefers-color-scheme:dark){html[data-appearance=system] :is(.pinyin-work,.pinyin-keys){background:#1a2723}}@media(max-width:850px){.pinyin-lab{grid-template-columns:minmax(0,1fr)}}@media(max-width:560px){.pinyin-work,.pinyin-keys{padding:16px}.pinyin-candidates{grid-template-columns:1fr}.pinyin-keys{grid-template-columns:repeat(5,minmax(0,1fr))}.pinyin-keys .space{grid-column:span 5}.pinyin-composed{font-size:31px}}
.network-status{position:sticky;top:0;z-index:70;padding:8px 20px;text-align:center;background:#fff1cf;color:#725421;font-weight:800;border-block:1px solid #ead29b}
.guide-steps{display:grid;gap:13px;padding:0;margin:22px 0;list-style:none}.guide-steps li{display:grid;grid-template-columns:32px 1fr;gap:4px 10px;padding:13px;background:var(--soft);border-radius:14px;counter-increment:guide}.guide-steps{counter-reset:guide}.guide-steps li:before{content:counter(guide);grid-row:span 2;width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:var(--green);color:#fff;font:800 12px Inter}.guide-steps span{color:var(--muted);font-size:11px;line-height:1.8}
.settings-grid{display:grid;gap:18px}.settings-grid fieldset{display:flex;flex-wrap:wrap;gap:11px;border:1px solid var(--line);border-radius:16px;padding:15px}.settings-grid legend{font-weight:850;padding:0 7px}.settings-grid label{display:flex;align-items:center;gap:7px;font-weight:750}.settings-grid input[type=range]{flex:1;min-width:160px;padding:0}
html[data-theme=sky]{--ink:#18313b;--muted:#667e88;--green:#315e75;--green2:#4d7690;--accent:#dcecf3;--line:#dce7eb;--paper:#f6f9fa;--soft:#edf4f6}
html[data-theme=sand]{--ink:#37392f;--muted:#7c7a68;--green:#5f6d50;--green2:#77866a;--accent:#eee3bd;--line:#e7e1d3;--paper:#fbf8f1;--soft:#f3efe4}
html[data-appearance=dark]{--ink:#edf5f0;--muted:#a8bab1;--green:#376e5a;--green2:#5b947c;--accent:#61774d;--line:#385047;--paper:#111b18;--soft:#1c2925;--white:#1a2723;color-scheme:dark}
html[data-appearance=dark] body,html[data-appearance=dark] .mobile-navigation{background:var(--paper);color:var(--ink)}
html[data-appearance=dark] :is(.desktop-navigation,.surface,.mini-section,.lesson-shell,.game-tile,.quiz-box,.dictionary-entry,.catalog-card,.progress-cards .metric,.chart-wrap,.stats-log,.modal,.session-result,.icon-button,.header-search,input,select,.btn.outline){background:#1a2723;color:var(--ink);border-color:var(--line)}
html[data-appearance=dark] :is(.lesson-text,.timeline-item,.day-row,.lesson-steps,.lesson-foot){border-color:var(--line)}
html[data-appearance=dark] :is(.visual-panel,.journal-rail,.library-peek,.games-intro,.note-neutral,.goal-editor button,.interactive-tiles button,.quiz-options button,.specialty,.modal-close){background:#22332d;color:var(--ink)}
@media(prefers-color-scheme:dark){html[data-appearance=system]{--ink:#edf5f0;--muted:#a8bab1;--green:#376e5a;--green2:#5b947c;--accent:#61774d;--line:#385047;--paper:#111b18;--soft:#1c2925;--white:#1a2723;color-scheme:dark}html[data-appearance=system] body,html[data-appearance=system] .mobile-navigation{background:var(--paper);color:var(--ink)}html[data-appearance=system] :is(.desktop-navigation,.surface,.mini-section,.lesson-shell,.game-tile,.quiz-box,.dictionary-entry,.catalog-card,.progress-cards .metric,.chart-wrap,.stats-log,.modal,.session-result,.icon-button,.header-search,input,select,.btn.outline){background:#1a2723;color:var(--ink);border-color:var(--line)}html[data-appearance=system] :is(.visual-panel,.journal-rail,.library-peek,.games-intro,.note-neutral,.goal-editor button,.interactive-tiles button,.quiz-options button,.specialty,.modal-close){background:#22332d;color:var(--ink)}}
@media(max-width:560px){.header-tools{gap:5px}.icon-button{width:38px;height:38px}.header-search{display:none}.brand span{display:none}}
.review-callout{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 24px;margin-bottom:18px;border-radius:20px;background:#fff5d9;border:1px solid #edd99d}.review-callout h3{margin:4px 0}.review-callout p{color:#786b4e;line-height:1.8;font-size:11px}@media(max-width:560px){.review-callout{align-items:flex-start;flex-direction:column}}
.admin-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:24px}.admin-heading p{color:var(--muted);line-height:1.9;margin-top:6px}.admin-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:18px}.admin-metrics div{padding:21px;background:#fff;border:1px solid var(--line);border-radius:18px}.admin-metrics strong,.admin-metrics span{display:block}.admin-metrics strong{font:800 31px Inter}.admin-metrics span{color:var(--muted);font-size:11px;margin-top:6px}.admin-toolbar{display:flex;align-items:end;gap:12px;padding:15px;background:var(--soft);border-radius:18px;margin-bottom:13px}.admin-toolbar label{display:grid;gap:5px;font-weight:800}.admin-toolbar input{min-width:240px}.gate-state{padding:12px 16px;border-radius:13px;font-weight:850;margin-right:auto}.gate-state.fail{background:#ffe5de;color:#a13d2f;border:1px solid #efb4a8}.gate-state.pass{background:#e1f2d8;color:#2e6740}.admin-table-wrap{overflow:auto;border:1px solid var(--line);border-radius:20px;background:#fff}.admin-table{width:100%;border-collapse:collapse;min-width:850px}.admin-table th,.admin-table td{padding:15px;text-align:right;border-bottom:1px solid var(--line)}.admin-table th{background:var(--soft);font-size:11px}.admin-table td:first-child b,.admin-table td:first-child span{display:block}.admin-table td:first-child span{color:var(--muted);margin-top:4px}.status-chip{padding:6px 10px;border-radius:100px;font-weight:800;font-size:10px}.status-chip.draft{background:#eef0ea;color:#68766d}.gate-button{padding:8px 11px;border-radius:10px;font-weight:800}.gate-button.fail{background:#fff0ec;color:#a44032}.gate-button.pass{background:#e4f2dc;color:#2d673e}.missing-list{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0;list-style:none}.missing-list li{padding:10px;border-radius:10px;background:#fff0ec;color:#8e3d32}code{direction:ltr;display:inline-block}html[data-appearance=dark] :is(.admin-metrics div,.admin-table-wrap){background:#1a2723}@media(prefers-color-scheme:dark){html[data-appearance=system] :is(.admin-metrics div,.admin-table-wrap){background:#1a2723}}@media(max-width:850px){.admin-metrics{grid-template-columns:1fr 1fr}.admin-toolbar{align-items:stretch;flex-direction:column}.admin-toolbar input{min-width:0}.gate-state{margin:0}}@media(max-width:560px){.admin-heading{align-items:flex-start;flex-direction:column}.admin-metrics{gap:8px}.admin-metrics div{padding:15px}.missing-list{grid-template-columns:1fr}}
.numbers-lab{display:grid;grid-template-columns:1.05fr .95fr;gap:0;border:1px solid var(--line);border-radius:28px;overflow:hidden;background:#fff}.numbers-copy{padding:35px}.numbers-copy h2{margin:8px 0}.numbers-copy>p{color:var(--muted);line-height:2;margin-bottom:21px}.numbers-copy form{display:grid;grid-template-columns:1fr 1fr;gap:12px}.numbers-copy label{display:grid;gap:7px;font-weight:800}.numbers-copy .liang-choice{grid-column:span 2;display:flex;align-items:center}.numbers-copy form button{justify-self:start}.numbers-copy small{display:block;color:var(--muted);line-height:1.8;margin-top:14px}.number-result{background:var(--green);color:#fff;padding:40px;display:flex;flex-direction:column;justify-content:center;align-items:flex-start}.number-result .overline{color:#bad8ca}.number-result strong{font:650 clamp(38px,6vw,82px)/1.5 'Noto Serif CJK SC','Noto Sans CJK SC',serif;margin:9px 0;word-break:break-word}.number-result .pinyin{color:#d9eadf}.number-result p{color:#c5dbd0;line-height:2;margin-top:13px}.number-actions{display:flex;gap:8px;margin-top:20px}.number-topics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:18px}.number-topics article{padding:17px;background:#fff;border:1px solid var(--line);border-radius:16px}.number-topics b,.number-topics span{display:block}.number-topics span{color:var(--muted);font-size:11px;line-height:1.8;margin-top:5px}html[data-appearance=dark] .numbers-lab,html[data-appearance=dark] .number-topics article{background:#1a2723}@media(prefers-color-scheme:dark){html[data-appearance=system] .numbers-lab,html[data-appearance=system] .number-topics article{background:#1a2723}}@media(max-width:800px){.numbers-lab{grid-template-columns:1fr}.number-topics{grid-template-columns:repeat(2,1fr)}}@media(max-width:560px){.numbers-copy,.number-result{padding:24px}.numbers-copy form{grid-template-columns:1fr}.numbers-copy .liang-choice{grid-column:auto}.number-topics{grid-template-columns:1fr}.number-result strong{font-size:40px}}
.dictionary-entry small{display:block;margin-top:7px;color:var(--muted);font-size:10px}.dictionary-paging{grid-column:1/-1;display:flex;align-items:center;justify-content:center;gap:14px;padding:10px}@media(max-width:850px){.dictionary-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:560px){.dictionary-grid{grid-template-columns:1fr}.search-wide{flex-wrap:wrap}.search-wide input{order:2;flex-basis:100%}}
.interactive-photo{position:absolute;inset:0;overflow:hidden;background:#dfeae3}.interactive-photo:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(13,39,31,.45));pointer-events:none}.interactive-photo>img{width:100%;height:100%;object-fit:cover;object-position:center;display:block}.photo-hotspot{position:absolute;z-index:2;width:68px;height:68px;border-radius:50%;border:2px solid #fff;background:rgba(26,83,63,.88);color:#fff;display:grid;place-items:center;align-content:center;box-shadow:0 7px 24px rgba(0,0,0,.25);backdrop-filter:blur(8px);transition:transform .2s ease,background .2s ease}.photo-hotspot:hover,.photo-hotspot:focus-visible,.photo-hotspot.active{transform:scale(1.1);background:#b6683f;outline:3px solid rgba(255,255,255,.8);outline-offset:3px}.photo-hotspot b{font:800 24px 'Noto Serif CJK SC','Noto Sans CJK SC',serif;line-height:1}.photo-hotspot span{font-size:9px;margin-top:3px}.photo-hotspot.tutor{left:27%;top:30%}.photo-hotspot.learner{right:20%;top:31%}.photo-hotspot.greeting{left:50%;top:56%;transform:translateX(-50%);width:78px;height:78px}.photo-hotspot.greeting:hover,.photo-hotspot.greeting:focus-visible,.photo-hotspot.greeting.active{transform:translateX(-50%) scale(1.1)}.photo-meaning{position:absolute;z-index:2;right:20px;bottom:18px;left:20px;padding:12px 16px;border:1px solid rgba(255,255,255,.65);border-radius:15px;background:rgba(255,255,255,.9);color:#214f3d;box-shadow:0 8px 28px rgba(0,0,0,.16);backdrop-filter:blur(12px);display:flex;gap:10px;align-items:center;justify-content:center;text-align:center}.photo-meaning b{font-size:15px}.photo-meaning span{font-size:11px;color:#5e756a}@media(max-width:560px){.photo-hotspot{width:56px;height:56px}.photo-hotspot b{font-size:20px}.photo-hotspot.greeting{width:64px;height:64px}.photo-meaning{right:10px;left:10px;bottom:10px;display:grid;gap:2px}.interactive-photo>img{object-position:center}}