:root{--paper:#faf8f1;--ink:#243e38;--muted:#64736d;--line:#e2e5d9;--green:#286854;--orange:#d67233;--white:#fffef9;font-family:Microsoft YaHei,PingFang SC,system-ui,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.48}a{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #c2692f;outline-offset:4px}button{border:0}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(32px,3.8vw,51px);line-height:1.35;letter-spacing:-1.5px;font-weight:750}h2{font-size:24px;line-height:1.5}p{line-height:1.85}small{font-size:12px}.topbar{height:100px;max-width:1240px;margin:auto;padding:0 36px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;text-decoration:none;align-items:center;font-weight:700;font-size:21px;letter-spacing:1px}.brand-mark{font-size:36px;color:var(--orange)}.brand small{display:block;letter-spacing:2px;font-size:9px;font-weight:500;margin-top:5px}.local-badge{font-size:12px;color:var(--muted);background:#eef0e6;border-radius:30px;padding:10px 16px}.local-badge span{color:var(--green);font-size:10px;margin-right:5px}main{max-width:1240px;margin:auto;padding:0 36px;min-height:calc(100vh - 185px)}main:focus{outline:none}.hero{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;padding:55px 0 35px;align-items:center}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:700;color:#6b7a57;margin-bottom:15px}.hero h1 em{font-style:normal;color:var(--orange)}.hero p{font-size:15px;color:var(--muted);margin-bottom:20px}.route-switch{display:inline-flex;background:#eeeee3;padding:5px;border-radius:14px;gap:3px}.route-switch button{padding:12px 19px;background:transparent;color:var(--muted);border-radius:10px;font-size:14px}.route-switch button[aria-pressed=true]{background:var(--white);color:var(--ink);box-shadow:0 2px 5px #243e3810;font-weight:700}.island-art{height:255px;position:relative;display:grid;place-items:center}.orb{width:242px;height:220px;border-radius:46% 54% 53% 47%;background:#e8edda;transform:rotate(-7deg);position:absolute}.island{width:250px;height:94px;background:#b8cbaa;border-radius:50%;position:absolute;bottom:8px;box-shadow:0 12px #e0e4cf;transform:rotate(-5deg)}.art-house{position:absolute;top:80px;left:calc(50% - 36px);width:86px;height:95px;background:#f6cf8c;border-radius:10px 10px 20px 20px;transform:rotate(-6deg);box-shadow:inset -15px 0 #e7b668}.art-house:before{content:"";position:absolute;border-left:65px solid transparent;border-right:65px solid transparent;border-bottom:64px solid #cc6f3e;top:-58px;left:-23px}.art-door{position:absolute;width:25px;height:42px;border-radius:18px 18px 0 0;background:#426d55;bottom:0;left:26px}.tree{position:absolute;width:17px;height:83px;background:#a0794a;top:105px;left:calc(50% - 97px);transform:rotate(5deg)}.tree:before{content:"";position:absolute;width:83px;height:93px;background:#66886a;border-radius:50% 45% 45% 40%;left:-33px;top:-58px}.art-star{position:absolute;color:#d78737;font-size:28px;right:17%;top:35px}.art-star.tiny{font-size:17px;left:19%;top:25px}.art-path{position:absolute;width:70px;height:40px;border-radius:50%;border:9px solid #faf2d9;bottom:28px;left:calc(50% - 2px);transform:rotate(-20deg)}.art-tag{position:absolute;bottom:0;right:10%;background:var(--white);padding:9px 14px;border:1px solid var(--line);border-radius:9px;font-size:11px;transform:rotate(5deg)}.journey{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px 28px;background:#e9eee2;border:1px solid #dce3d2;border-radius:18px;margin-bottom:38px}.journey h2{font-size:18px;margin:0 0 5px}.journey p{font-size:12px;color:var(--muted);margin:0}.journey-meta{display:flex;gap:22px;align-items:center}.journey-count{font-size:12px;color:var(--muted);white-space:nowrap}.primary,.secondary,.subtle{padding:13px 22px;border-radius:10px;font-size:14px;min-height:46px}.primary{color:#fff;background:var(--green);font-weight:600}.primary:hover{background:#1f5745}.secondary{background:#f1f1e8;color:var(--ink);border:1px solid var(--line)}.subtle{background:transparent;color:var(--muted);padding:12px}.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.section-head h2{margin:0;font-size:21px}.section-head p{font-size:12px;color:var(--muted);margin:0}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding-bottom:38px}.subject-card{position:relative;background:var(--white);border:1px solid var(--line);border-radius:16px;padding:21px;display:flex;flex-direction:column;min-height:246px;transition:transform .15s,border-color .15s}.subject-card:hover{transform:translateY(-3px);border-color:#a8b9a0}.card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.subject-icon{width:42px;height:42px;border-radius:13px;background:#f0eee3;font-size:24px;display:grid;place-items:center}.subject-label{color:var(--muted);font-size:11px}.subject-card h3{font-size:16px;line-height:1.6;margin:0 0 7px}.subject-card p{font-size:12px;line-height:1.8;color:var(--muted);margin:0 0 17px}.card-bottom{margin-top:auto;display:flex;justify-content:space-between;align-items:center;gap:5px}.card-bottom span{font-size:10px;color:#7d8374}.card-bottom button{background:transparent;color:var(--green);font-size:12px;font-weight:700;padding:7px 0 7px 8px;min-height:40px}.status-note{padding:14px 20px;border-radius:10px;background:#f7e9cb;font-size:13px;line-height:1.7;margin:20px 0}.activity-shell{max-width:860px;margin:34px auto 0;padding-bottom:36px}.activity-nav{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:24px;color:var(--muted);font-size:12px}.activity-nav .subtle{padding-left:0}.step-track{display:flex;gap:7px;margin:16px 0 28px}.step-track span{height:5px;background:#e1e7dc;border-radius:10px;flex:1}.step-track .done{background:var(--green)}.task-card{background:var(--white);border:1px solid var(--line);padding:32px;border-radius:22px}.task-label{font-size:12px;color:var(--muted);margin-bottom:14px}.task-card h1{font-size:26px;letter-spacing:0;line-height:1.65;margin-bottom:24px}.material{background:#f1f1e7;border-radius:12px;padding:16px 20px;margin-bottom:22px;font-size:14px}.material p:last-child{margin-bottom:0}.material p{margin-bottom:9px}.choice-list{display:grid;gap:12px}.choice{display:flex;gap:13px;align-items:center;text-align:left;background:#fffef9;border:1px solid #dce2d5;border-radius:12px;padding:16px 18px;min-height:60px;color:var(--ink);font-size:16px;line-height:1.6}.choice:hover{border-color:#7c9f89;background:#f6f8f0}.choice[aria-pressed=true]{background:#ebf2e4;border:2px solid var(--green);padding:15px 17px}.choice .choice-index{border:1px solid var(--line);border-radius:50%;width:26px;height:26px;display:grid;place-items:center;font-size:12px;flex-shrink:0}.task-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:25px}.hint{padding:16px 19px;background:#faf0d7;border:1px solid #ecdfbd;border-radius:10px;line-height:1.8;margin-top:20px;font-size:14px}.feedback{padding:18px 22px;border:1px solid #d5e2c8;background:#eef4e7;border-radius:12px;margin-top:20px;font-size:15px;line-height:1.8}.feedback.retry{background:#fcf0df;border-color:#edddbc}.feedback strong{display:block;margin-bottom:6px}.feedback p:last-child{margin-bottom:0}.stars{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;padding:20px 0 30px}.star{background:#f1eee0;border:2px solid #e7ddbb;border-radius:20px;width:90px;height:100px;font-size:38px;color:#b6b19f;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px}.star small{font-size:13px}.star[aria-pressed=true]{background:#fff0ba;color:#b97823;border-color:#cfac58}.counter{text-align:center;font-size:14px;color:var(--muted)}.word-cards{display:flex;flex-wrap:wrap;gap:12px;margin:18px 0}.word-card{background:#eeeee2;color:var(--ink);border:1px solid var(--line);padding:18px 23px;border-radius:12px;font-size:19px;min-height:56px}.word-card.used{opacity:.4}.sentence{padding:22px;border:2px dashed #c7d4be;min-height:80px;border-radius:13px;font-size:23px;line-height:1.6;margin:20px 0}.prediction label{display:block;font-size:14px;margin:20px 0 10px}.prediction input[type=number]{border:1px solid #bfcab8;border-radius:10px;padding:13px;width:155px;background:#fff;color:var(--ink)}.prediction select{width:100%;padding:13px;border-radius:10px;background:#fff;border:1px solid #bfcab8;color:var(--ink);font-size:14px}.prediction .uncertain{display:flex;align-items:center;gap:8px;font-size:14px}.data-table{border-collapse:collapse;width:100%;font-size:14px}.data-table th,.data-table td{padding:10px 12px;border-bottom:1px solid #dce3d3;text-align:left}.data-table caption{text-align:left;margin-bottom:12px;color:var(--muted);font-size:12px}.data-table tr:last-child td{border:0}.new-data{background:#e7efdc;padding:16px 20px;border-radius:12px;margin:16px 0;line-height:1.8}.robot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;width:264px;margin:20px auto}.cell{height:83px;background:#f0f0e3;border:1px solid #dfe4d4;border-radius:12px;display:grid;place-items:center;font-size:30px;position:relative}.cell.trail{background:#e2edd9}.cell .goal{position:absolute;right:9px;top:5px;font-size:22px}.cell .robot{z-index:1;background:#f5d793;border-radius:9px;padding:3px 9px;font-size:30px;color:#5e5f38}.command-line{text-align:center;margin:14px 0;font-size:14px;line-height:1.8}.robot-actions{display:flex;justify-content:center;gap:12px}.finish{text-align:center;padding:42px 28px}.finish .finish-mark{font-size:60px;color:var(--orange);margin-bottom:16px}.finish h1{font-size:32px}.finish>p{color:var(--muted);font-size:14px}.review-list{text-align:left;margin:28px 0;display:grid;gap:11px}.review-list>div{background:#f1f3e9;padding:16px 18px;border-radius:10px;font-size:13px;line-height:1.8}.review-list strong{display:block;margin-bottom:5px}.button-row{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:25px}.readiness{font-size:12px;color:var(--muted);margin-top:24px;border-top:1px solid var(--line);padding-top:16px;line-height:1.8}.save-status{font-size:11px;color:var(--muted);margin:20px 0 0;text-align:right}.mini-count{font-size:12px;font-weight:400;margin-left:10px;color:var(--muted)}footer{max-width:1240px;margin:auto;padding:25px 36px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:15px;font-size:11px;color:#788176;line-height:1.7}footer a{text-decoration:none}.footer-dot{padding:0 8px}.skip{position:fixed;left:15px;top:-100px;background:#fff;padding:14px;z-index:10}.skip:focus{top:10px}.about{max-width:800px;padding-top:40px;padding-bottom:50px}.about h1{font-size:32px}.about h2{font-size:20px;margin-top:30px}.about p,.about li{font-size:14px;line-height:1.9}.about li{margin-bottom:10px}@media (max-width:1050px){.cards{grid-template-columns:repeat(2,1fr)}.hero{gap:15px}.journey{padding:22px}.journey-meta{gap:16px}.journey-count{display:none}}@media (max-width:620px){.topbar{height:83px;padding:0 20px}.brand{font-size:17px}.brand-mark{font-size:29px}.local-badge{padding:8px 10px;font-size:10px}main{padding:0 20px}.hero{grid-template-columns:1fr;padding-top:34px;padding-bottom:26px;gap:10px}.hero h1{font-size:36px}.island-art{display:none}.hero p{font-size:14px}.journey{display:block;margin-bottom:28px}.journey-meta{margin-top:18px}.journey .primary{width:100%}.cards{gap:12px}.subject-card{padding:16px 13px;min-height:250px}.subject-card h3{font-size:15px}.subject-card p{font-size:11px}.subject-label{font-size:10px}.card-top{margin-bottom:14px;gap:4px}.subject-icon{width:34px;height:34px;font-size:20px}.card-bottom{display:block}.card-bottom button{display:block;padding-left:0}.section-head p{display:none}.section-head h2{font-size:20px}.task-card{padding:24px 18px}.task-card h1{font-size:21px}.choice{font-size:14px;padding:14px 13px}.choice[aria-pressed=true]{padding:13px 12px}.activity-nav{font-size:11px}.activity-shell{margin-top:16px}.star{width:68px;height:82px;font-size:30px}.stars{gap:9px}.primary,.secondary,.subtle{font-size:13px;padding:12px 15px}.task-actions{gap:5px}.finish{padding:30px 17px}.finish h1{font-size:26px}.data-table{font-size:12px}.data-table th,.data-table td{padding:9px 5px}footer{padding:20px;display:block}footer>span{display:block;margin-bottom:7px}.route-switch{display:flex}.route-switch button{flex:1;padding:12px 10px}.word-card{padding:15px 18px}.robot-grid{width:240px}.cell{height:75px}}@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}body{background:var(--paper)}button{background:var(--green);color:#fff;border-radius:10px;padding:12px 20px;min-height:46px;font-size:14px;line-height:1.6}button:hover:not(:disabled){filter:brightness(.95)}button[aria-pressed=true]{outline:2px solid var(--green);outline-offset:2px}.subtle{background:transparent;color:var(--ink)}.secondary{background:#f0f1e7;color:var(--ink)}.app header{max-width:1240px;margin:auto;height:96px;padding:0 36px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px}.app header nav{display:flex;gap:8px}.brand>span{font-size:34px;color:var(--orange)}.brand b{font-size:21px}.brand small{font-size:9px}.app main{min-height:calc(100vh - 180px);padding-bottom:40px}h1 em{font-style:normal;color:var(--orange)}.panel{padding:32px;border:1px solid var(--line);border-radius:20px;background:var(--white);margin:28px 0}.panel h1{font-size:30px;letter-spacing:0;line-height:1.65}.panel h2{font-size:23px}.muted{color:var(--muted);font-size:12px;line-height:1.8}.row{display:flex;align-items:center;gap:12px}.wrap{flex-wrap:wrap}.spread{justify-content:space-between}.pill,.badge,.tags>span{display:inline-block;border:1px solid var(--line);background:#f0f2e8;border-radius:30px;padding:7px 12px;color:var(--muted);font-size:11px;line-height:1.6}.badge{padding:4px 10px}.notice{margin-top:18px;padding:14px 20px;background:#fbebc9;border-radius:12px;font-size:14px;line-height:1.8}.wizard{max-width:850px;margin:55px auto}.wizard>p{color:var(--muted)}.grade-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin:30px 0}.setup-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:30px 0}.grade-grid button,.setup-grid button{background:#f2f2e8;color:var(--ink);border:1px solid var(--line);padding:20px 12px}.setup-grid button small{display:block;color:var(--muted);margin-top:10px}.setup-icon{font-size:46px;display:block;margin-bottom:14px}.grade-grid button[aria-pressed=true],.setup-grid button[aria-pressed=true]{background:#e7efdc}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:30px 0 20px}.section-heading h1,.section-heading h2{margin-bottom:8px}.section-heading p{margin:0;color:var(--muted);font-size:13px}.section-heading h2{font-size:23px}.resume{background:#e9eee1;border:1px solid #dce4d2;border-radius:18px;padding:22px 27px;display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:30px}.resume h2{font-size:18px;margin:0 0 5px}.resume p{font-size:13px;margin:0;color:var(--muted)}.recommend-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}.recommend-card{padding:23px;border:1px solid #d7dfcc;border-radius:16px;background:#f0f3e8;display:flex;flex-direction:column}.recommend-card>span{font-size:11px;color:var(--muted)}.recommend-card h3{font-size:17px;margin:17px 0 9px;line-height:1.7}.recommend-card p{font-size:12px;color:var(--muted)}.recommend-card button{margin-top:auto;align-self:flex-start}.browse{margin-top:40px}.filters{display:grid;grid-template-columns:1fr 220px;gap:18px;margin:20px 0}.filters label,.field{display:flex;flex-direction:column;gap:10px;font-size:13px;color:var(--muted)}input:not([type=checkbox]):not([type=range]),select{padding:12px 14px;border-radius:10px;border:1px solid #cbd4c2;color:var(--ink);background:#fffefb;min-height:46px;max-width:100%;font:inherit}input[type=checkbox]{width:18px;height:18px;accent-color:var(--green)}input[type=range]{accent-color:var(--green)}.field{margin:22px 0}.field input{max-width:330px}.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}.topic-card{background:var(--white);border:1px solid var(--line);border-radius:16px;padding:22px;display:flex;flex-direction:column}.topic-card>.subject-icon{margin-bottom:14px}.topic-card>small{color:var(--muted);font-size:11px}.topic-card h3{margin:14px 0 8px;font-size:17px;line-height:1.65}.topic-card p{font-size:12px;color:var(--muted)}.topic-card>.row{margin-top:auto}.theme-space{--green:#5363a2;--orange:#c8864d;--paper:#f7f7fb;--ink:#343a55}.theme-ocean{--green:#307b84;--orange:#d18448;--paper:#f5f9f7;--ink:#29474a}.theme-space .orb{background:#e4e5f1}.theme-space .island{background:#b6bbd4}.theme-ocean .orb{background:#dfeee8}.theme-ocean .island{background:#a2c8c6}.island-art>b{position:absolute;font-size:33px;right:16%;top:15px;color:var(--orange)}.art-house>span{position:absolute;bottom:0;left:27px;width:27px;height:43px;background:var(--green);border-radius:16px 16px 0 0}.island-art>small{position:absolute;bottom:0;right:12%;padding:10px;background:#fffef8;transform:rotate(5deg);border:1px solid var(--line);border-radius:8px}.play-shell{max-width:900px;margin:22px auto}.play-nav{display:flex;gap:15px;align-items:center;justify-content:space-between;color:var(--muted);font-size:12px}.task h1{font-size:25px}.task .eyebrow{margin:0}.choices{display:grid;gap:12px;margin:22px 0}.choices>button{background:#fffef9;color:var(--ink);border:1px solid #d5dfcd;text-align:left;padding:18px 20px;font-size:16px;display:flex;align-items:center;gap:13px}.choices button[aria-pressed=true]{background:#eaf1e1}.choices button>span{border:1px solid var(--line);border-radius:50%;width:28px;height:28px;display:grid;place-items:center;font-size:12px;flex-shrink:0}.matches{display:grid;gap:13px;margin:25px 0}.matches>label{display:grid;grid-template-columns:1fr minmax(160px,35%);gap:17px;align-items:center;padding:15px;background:#f3f4eb;border-radius:12px;line-height:1.8;font-size:15px}.matches select{width:100%}.token-row{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}.token-row button{background:#ecefe1;color:var(--ink);font-size:18px;border:1px solid var(--line);padding:17px 22px}.stars>button{width:85px;height:95px;font-size:35px;background:#eee9d7;color:#928874;border:1px solid #d9d1b5;border-radius:20px;display:flex;flex-direction:column;align-items:center}.stars>button[aria-pressed=true]{background:#f6dda0;color:#ae702e}.stars small{font-size:13px}.sentence{background:#fafbf4}.fraction-bar{display:grid;border:1px solid #6d836b;width:100%;height:54px;margin:15px 0;background:#fff}.fraction-bar>span{border-right:1px solid #8b9e80}.fraction-bar .filled{background:#b9cba1}.numberline{display:flex;justify-content:space-between;border-bottom:3px solid #658467;margin:40px 0 25px;gap:4px}.numberline button{padding:10px 7px;min-width:0;font-size:13px;transform:translateY(14px);border:2px solid #cbd6bd;background:#fff;color:var(--ink)}.numberline button[aria-pressed=true]{background:#cbdcae}.robot-grid>div{height:83px;background:#eef0e2;display:grid;place-items:center;border-radius:10px;border:1px solid #d8dfcb;position:relative}.robot-grid .trail{background:#dce9cd}.robot-grid b{font-size:36px;z-index:1;color:#4b7051;background:#efcd84;border-radius:9px;padding:0 8px}.robot-grid .flower{position:absolute;right:8px;top:5px;font-size:22px;color:#bc733f}.task-input svg{width:100%;max-height:310px;display:block;margin:20px auto}.task-input svg text{font-size:12px;fill:#45604e}.task-input .plant{max-width:270px}.material{white-space:pre-line}.check{display:flex;align-items:center;gap:10px;margin:20px 0;font-size:14px;line-height:1.7}.example{padding:20px;background:#f0eee2;border-radius:12px;margin:20px 0;font-size:14px;line-height:1.9}.example p{margin-bottom:9px}.feedback.retry{background:#f9edda}.feedback.success{background:#eaf2e2}.task-actions{margin-top:28px}.readiness{border-top:1px solid var(--line);margin-top:26px;padding-top:20px;font-size:12px;color:var(--muted)}details{margin:18px 0}summary{cursor:pointer;line-height:1.9;color:var(--ink);font-size:14px}details pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#f3f3e9;padding:20px;border-radius:12px;font-size:12px;line-height:1.9}.review-list article{background:#f1f3e8;padding:20px;border-radius:12px}.review-list h3{font-size:15px;line-height:1.8;overflow-wrap:anywhere;margin-bottom:8px}.review-list p{font-size:14px}.review-list small{color:var(--muted)}.finish-star{font-size:60px;color:var(--orange)}.finish .row{justify-content:center}.pie-editor{display:grid;grid-template-columns:1fr 230px;gap:20px;align-items:center}.pie-editor input{width:95px}.pie-editor p{font-size:12px}.pie-visual{max-width:260px;margin:auto}.graph-settings{display:grid;grid-template-columns:repeat(2,1fr);gap:15px;margin:22px 0}.graph-settings>label{display:flex;flex-direction:column;gap:8px;font-size:13px}.coordinate-list{display:grid;gap:12px}.coordinate-list>div{display:flex;align-items:center;gap:12px;font-size:14px;padding:10px;background:#f1f3e9;border-radius:8px}.coordinate-list label{display:flex;gap:8px;align-items:center}.coordinate-list input{width:90px}table{border-collapse:collapse;width:100%;font-size:13px;margin:18px 0}th,td{padding:12px;text-align:left;border-bottom:1px solid var(--line);line-height:1.8}th{background:#eef1e5}caption{text-align:left;color:var(--muted);padding-bottom:10px}.table-scroll{overflow-x:auto}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:25px 0}.stat-grid>div{padding:22px;background:#eef2e6;border-radius:12px;font-size:13px;color:var(--muted);line-height:1.8}.stat-grid b{display:block;font-size:26px;color:var(--ink);margin-bottom:9px}.history-row,.catalog-list>article{padding:22px;background:#fffef9;border:1px solid var(--line);border-radius:14px;margin:13px 0;display:flex;align-items:center;justify-content:space-between;gap:20px}.history-row p,.catalog-list p{font-size:12px;color:var(--muted);margin:8px 0}.history-row p{line-height:1.8}.catalog-list h3{font-size:17px;margin:10px 0}.tags{display:flex;flex-wrap:wrap;gap:7px}.tags>span{font-size:10px;padding:4px 9px}.large-stat{font-size:42px;color:var(--green);font-weight:700;text-align:center}.large-stat small{font-size:12px;display:block;color:var(--muted);font-weight:400}.tabs{display:flex;gap:10px;border-bottom:1px solid var(--line);padding-bottom:15px}.tabs button{background:#eeeee5;color:var(--ink)}.field-row{border:1px solid var(--line);border-radius:12px;padding:20px;margin:15px 0}.field-row code,.source-files code{display:block;overflow-wrap:anywhere;font-size:10px;color:var(--muted);margin:12px 0}.field-row p{white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px}.pending{color:#9b6d2e}.source-text{color:var(--muted)}.source-files{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.source-files article{padding:20px;background:#f2f3e9;border-radius:12px}.source-files h3{font-size:16px}.source-files .row{flex-wrap:wrap}.source-files a,.panel>a{font-size:13px}.dependency{border-left:3px solid #adc29a;padding:12px 18px;margin:16px 0;background:#f2f4e9}.dependency p{font-size:12px;color:var(--muted);margin:6px 0}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#182b2470;display:flex;align-items:center;justify-content:center;padding:25px;z-index:30}.modal{width:100%;max-width:720px;max-height:90vh;overflow-y:auto;margin:0;box-shadow:0 20px 90px #1233}.modal h2{font-size:22px}.modal>p{font-size:13px;color:var(--muted)}.play-option{padding:21px;background:#f1f3e9;border-radius:12px;margin:16px 0}.play-option h3{font-size:18px}.play-option p{font-size:13px}.cube-stage{height:155px;display:flex;justify-content:space-evenly;align-items:center;perspective:550px;margin:30px 0}.cube{width:80px;height:80px;transform-style:preserve-3d}.cube>span{position:absolute;width:80px;height:80px;border:2px solid #486e58;background:#b5cca3aa}.cube .front{transform:translateZ(40px)}.cube .back{transform:rotateY(180deg) translateZ(40px)}.cube .left{transform:rotateY(-90deg) translateZ(40px)}.cube .right{transform:rotateY(90deg) translateZ(40px)}.cube .top{transform:rotateX(90deg) translateZ(40px)}.cube .bottom{transform:rotateX(-90deg) translateZ(40px)}.sphere{width:90px;height:90px;border-radius:50%;background:radial-gradient(circle at 30% 30%,#f0e1ad,#9f9c58)}.solid-demo p{font-size:13px}.app footer{font-size:11px}.profile>.row{margin-bottom:25px}@media (max-width:1050px){.topic-grid,.recommend-grid,.stat-grid{grid-template-columns:repeat(2,1fr)}.grade-grid{grid-template-columns:repeat(3,1fr)}}@media (max-width:620px){.app header{padding:0 18px;height:85px;gap:6px}.brand b{font-size:16px}.brand>span{font-size:25px}.brand{gap:7px}.app header nav{gap:0}.app header nav button{font-size:11px;padding:8px;min-height:42px}.app main{padding-left:18px;padding-right:18px}.panel{padding:24px 17px}.panel h1{font-size:24px}.wizard{margin:30px 0}.setup-grid{grid-template-columns:1fr}.setup-grid button{padding:16px}.setup-icon{font-size:28px}.grade-grid{gap:10px}.grade-grid button{font-size:12px;padding:14px 8px}.section-heading{align-items:flex-start}.section-heading h2{font-size:20px}.recommend-grid{gap:12px}.recommend-card{padding:18px 14px}.recommend-card h3{font-size:16px}.recommend-card button{font-size:12px;padding:11px}.topic-grid{gap:12px}.topic-card{padding:18px 14px}.topic-card h3{font-size:16px}.topic-card>.row{display:block}.topic-card .subtle{padding-left:0}.filters{grid-template-columns:1fr}.resume{display:block;padding:22px}.resume>button{margin-top:15px}.hero h1{font-size:35px}.hero>.row{gap:8px}.hero .pill{font-size:10px}.task h1{font-size:21px}.task>.row{align-items:flex-start}.task>.row .eyebrow{font-size:10px;line-height:1.9}.task .subtle{font-size:12px}.play-nav{gap:9px;font-size:11px}.play-nav>span:nth-child(2){max-width:50%;line-height:1.8}.matches>label{grid-template-columns:1fr;padding:14px;gap:10px;font-size:14px}.choices>button{font-size:14px;padding:16px 13px}.token-row button{font-size:15px;padding:14px 18px}.numberline button{font-size:10px;padding:8px 3px}.stars>button{width:64px;height:80px;font-size:28px}.pie-editor{grid-template-columns:1fr}.pie-editor svg{max-width:220px}.graph-settings{grid-template-columns:1fr}.coordinate-list>div{flex-wrap:wrap;gap:8px}.coordinate-list input{width:72px}.coordinate-list label{gap:4px;font-size:12px}.task-actions{display:block}.task-actions>button{display:block;width:100%;margin-top:16px}.stat-grid{grid-template-columns:1fr}.stat-grid b{font-size:23px}.history-row,.catalog-list>article{display:block;padding:18px}.history-row button,.catalog-list>article>button{margin-top:10px}.source-files{grid-template-columns:1fr}.tabs{gap:7px}.tabs button{font-size:12px;padding:11px 10px}.large-stat{font-size:30px}.field-row{padding:15px}.modal-backdrop{padding:12px}.modal{padding:20px 15px}.modal h2{font-size:19px}.row.wrap{gap:9px}.row.wrap button{font-size:12px}.task-input .robot-grid{width:232px}.task-input .robot-grid>div{height:73px}.app footer{padding:20px 18px}.section-heading>.muted{display:none}}.small-input{width:95px;display:block;margin:8px 0}.calculation{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin:20px 0}.calculation label{font-size:13px;max-width:200px}.calculation input{display:block;width:130px;margin-top:8px}.vibration-model{margin:25px 0;padding:45px 20px 20px;background:#eef1e5;border-radius:14px;text-align:center;min-height:190px}.vibrating-object{margin:0 auto 30px;background:#c9a16b;border:2px solid #9a7544}.ruler-object{height:25px;width:210px;border-radius:3px;background:repeating-linear-gradient(90deg,#d9b886,#d9b886 13px,#a48558,#d9b886 15px)}.stone-object{width:90px;height:70px;border-radius:43% 52% 37% 48%;background:#aab0a3;border-color:#7c887d}.moving .vibrating-object{animation:object-vibration .65s ease-in-out infinite alternate}.vibration-model p{font-size:15px;margin-bottom:8px}.vibration-model small{color:var(--muted)}@keyframes object-vibration{0%{transform:translateY(-8px)}to{transform:translateY(8px)}}@media (prefers-reduced-motion:reduce){.moving .vibrating-object{animation:none}}