/* style.css */
:root{--ink:#24222b;--muted:#7c7787;--orange:#794bc4;--paper:#f6f5f8;--line:#eae7ee;--purple:#794bc4}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--paper);color:var(--ink);font:14px 'PingFang SC','Microsoft YaHei','Helvetica Neue',sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input{font:inherit}button{background:none;border:0;color:inherit;cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #9f7ad5;outline-offset:4px}.wrap{width:calc(100% - 80px);max-width:1160px;margin:auto}header{height:76px;background:#ffffffed;display:flex;align-items:center;gap:30px;padding:0 max(30px,calc((100vw - 1320px)/2));border-bottom:1px solid #eeeaf3;position:sticky;top:0;z-index:20;backdrop-filter:blur(15px)}.brand{display:flex;gap:10px;align-items:center;font-size:19px;font-weight:750;white-space:nowrap}.brand-avatar{width:44px;height:44px;object-fit:cover;border-radius:50%;border:2px solid #eee4fa}.brand small{display:block;font-size:9px;letter-spacing:2.4px;font-weight:500;margin-top:3px;color:#8b7e9e}nav{display:flex;align-items:center;gap:24px;margin-left:auto;font-size:13px;white-space:nowrap}nav a{color:#6f6978;padding:27px 0;position:relative}nav a.active,nav a:hover{color:var(--purple)}nav a.active:after{content:'';position:absolute;bottom:17px;height:2px;width:16px;background:var(--purple);left:calc(50% - 8px);border-radius:3px}.header-actions{display:flex;gap:15px;align-items:center}.search-trigger{display:flex;align-items:center;gap:8px;background:#f4f2f7;border:1px solid #eeebf2;border-radius:20px;color:#8b8298;padding:8px 12px;font-size:20px}.search-trigger span{font-size:11px}.search-trigger kbd{font-size:9px;color:#a69cae}.github{font-size:11px;white-space:nowrap}.button{display:inline-flex;align-items:center;justify-content:center;gap:18px;padding:14px 23px;border-radius:7px;font-size:13px;font-weight:500;transition:.2s}.dark{color:#fff;background:var(--purple);box-shadow:0 5px 12px #794bc415}.dark:hover{background:#6737b3;transform:translateY(-1px)}.light{background:#ffffffbf;color:#6e43b0;border:1px solid #dcd0ec}.small{padding:11px 16px;font-size:12px;white-space:nowrap}.menu{display:none}.hero-banner{background:#eee7f8;border-bottom:1px solid #e9e0f2;overflow:hidden;position:relative}.hero-banner:before{content:'';position:absolute;width:570px;height:570px;border-radius:50%;background:#e7dcf3;right:calc(50% - 680px);top:-230px;box-shadow:0 0 0 65px #eae2f55c,0 0 0 130px #f4effb55}.hero{min-height:465px;display:grid;grid-template-columns:1.15fr 1fr;align-items:center;position:relative;padding:45px 0;gap:60px}.hero-kicker{font-size:12px;color:#8d66bd;letter-spacing:5px;margin-bottom:20px}h1{font-size:45px;line-height:1.5;font-weight:700;letter-spacing:1px;margin:0 0 20px}.hero-copy>p{font-size:14px;color:#7c6c8e;line-height:2;max-width:480px;margin:0}.hero-buttons{display:flex;gap:14px;margin:28px 0 24px}.hero-tags{display:flex;gap:22px;color:#9c88b3;font-size:11px}.hero-tags span:before{content:'✧';margin-right:6px}.mascot{position:relative;justify-self:center;width:350px;height:350px;display:grid;place-items:center}.mascot>img{width:314px;height:314px;object-fit:cover;border-radius:50%;box-shadow:0 18px 60px #6745941c;border:9px solid #faf7ffc9;position:relative}.mascot-orbit{position:absolute;width:366px;height:366px;border:1px dashed #c8b2e0;border-radius:50%;transform:rotate(-20deg)}.mascot-label{position:absolute;bottom:3px;left:18px;background:white;border:1px solid #e2d6f0;box-shadow:0 8px 20px #6c448a12;border-radius:12px;padding:13px 20px;color:#8153b2;font-size:13px;transform:rotate(-5deg)}.mascot-note{position:absolute;right:-16px;top:29px;writing-mode:vertical-rl;font-size:8px;letter-spacing:2px;color:#a28bb9}.intro-section{padding:43px 0 12px}.center-title{text-align:center}.eyebrow{font-size:9px;letter-spacing:2px;color:#987cba}.muted{color:#a08db5}.center-title .eyebrow{font-size:11px;letter-spacing:2px}h2{font-size:27px;line-height:1.5;margin:10px 0;font-weight:650;letter-spacing:.3px}.center-title p{font-size:12px;color:var(--muted)}.intro-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:28px}.intro-grid>a{display:flex;gap:12px;align-items:center;background:white;border-radius:10px;padding:20px 16px;box-shadow:0 2px 10px #34214604;border:1px solid #eeebf3}.intro-grid>a>span{width:35px;height:35px;display:grid;place-items:center;background:#f3edf9;border-radius:10px;color:#9065bd;font-size:24px}.intro-grid h3{font-size:13px;margin:0 0 6px;font-weight:600}.intro-grid p{font-size:10px;margin:0;color:#a097aa}.intro-grid b{margin-left:auto;font-size:13px;color:#b5a7c2;font-weight:400}.section{padding-top:52px;padding-bottom:18px}.section-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:23px;gap:25px}.section-top p{font-size:12px;color:var(--muted);margin:0;line-height:1.9}.section-top h2{font-size:25px}.orange{color:var(--purple)}.text-link{display:inline-flex;align-items:center;gap:12px;font-size:11px;color:#8c6dae;white-space:nowrap;padding:0}.text-link:hover,.card-link:hover{color:#602ba4}.experiments{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.experiment{background:#fff;border-radius:11px;overflow:hidden;box-shadow:0 3px 12px #3d285307;transition:transform 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span{position:absolute;top:8px;left:22px;width:22px;height:3px;background:#b5c6d2;border-radius:3px}.device b{position:absolute;left:16px;top:31px;font-size:34px;color:#c8deec}.device i{position:absolute;bottom:6px;left:22px;width:22px;height:3px;background:#96b5c9}.model-bars{display:flex;align-items:center;justify-content:center;gap:10px;height:100%;transform:rotate(-10deg)}.model-bars i{height:35px;width:15px;border-radius:8px;background:#d6a2b3}.model-bars i:nth-child(2),.model-bars i:nth-child(6){height:62px;background:#cc8ba1}.model-bars i:nth-child(3),.model-bars i:nth-child(5){height:87px;background:#bc7291}.model-bars i:nth-child(4){height:112px;background:#a95f81}.card-body{padding:20px 22px}.metadata{display:flex;gap:8px;align-items:center;justify-content:space-between;font-size:9px;color:#9b90a5}.status{background:#f0e9f8;color:#9063b9;padding:4px 7px;border-radius:4px;font-size:9px}.neutral{background:#f3f1f5;color:#a098a8}h3{font-size:16px;line-height:1.7;margin:13px 0 8px;font-weight:600}.card-body p{font-size:12px;color:#8b8194;line-height:1.9;min-height:46px}.card-link{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:#8e6aae;padding:16px 0 0;margin-top:16px;border-top:1px solid #f0edf4;width:100%;text-align:left}.project-section{background:transparent}.projects-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:24px}.family{background:#fff;border-radius:11px;padding:28px}.family-title{display:flex;align-items:center;gap:15px;margin-top:22px}.family-title>span{display:grid;place-items:center;background:#ede4f7;color:#9369be;border-radius:13px;width:53px;height:53px;font-size:36px}.family-title h3{font-size:30px;font-weight:600;margin:0}.family>p{font-size:19px;color:#7d6c90;line-height:1.8;margin:18px 0 20px}.agent-tabs{display:flex;gap:6px;border-bottom:1px solid var(--line)}.agent-tabs button{font-size:11px;padding:12px 10px;color:#a499ad;white-space:nowrap}.agent-tabs 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p{font-size:11px;line-height:1.9;color:#968a9f}.knowledge-bottom{display:flex;justify-content:space-between;font-size:10px;color:#9a80b2;border-top:1px solid #f0edf4;padding-top:16px;margin-top:19px}.knowledge-bottom b{font-weight:400}.community{margin-top:55px;background:#ece3f7;border:1px solid #e8dcf3;border-radius:13px;display:grid;grid-template-columns:1fr 1fr;gap:65px;padding:40px 45px}.community h2{font-size:34px;margin-top:15px;color:#59406e}.community>div>p{font-size:12px;line-height:2;color:#9880aa;margin:16px 0 24px}.community-options{align-self:center}.community-options button{width:100%;display:flex;text-align:left;align-items:center;gap:19px;border-bottom:1px solid #dacee7;padding:21px 0}.community-options button:last-child{border:0}.community-options button>span{font-size:10px;color:#aa91c1}.community-options h3{font-size:16px;margin:0 0 6px;color:#735386}.community-options p{font-size:11px;color:#a08bb1;margin:0}.community-options 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/* Independent Xinzhi workbench layout */
:root{--paper:#f8f7fa;--ink:#29242f;--purple:#7347a8;--orange:#7347a8;--line:#e5dfea}header{height:80px;background:#f8f7faf5;border-bottom:1px solid #ded7e5}.brand-avatar{border-radius:12px}.brand small{letter-spacing:2.8px}nav a{font-size:12px}.button{border-radius:3px}.search-trigger{border-radius:4px;background:#f0edf3}.workbench{display:grid;grid-template-columns:1.05fr 1fr;gap:80px;padding-top:60px;padding-bottom:55px}.bench-main{padding-top:6px}.bench-label{display:flex;align-items:center;gap:9px;color:#8b759e;font-size:9px;letter-spacing:1.6px}.bench-label>span:last-child{margin-left:auto;color:#a99ab4;letter-spacing:1px}.live-dot{width:6px;height:6px;background:#8b65b1;border-radius:50%;box-shadow:0 0 0 4px #ece4f4}.bench-main h1{font-size:57px;letter-spacing:-1.5px;line-height:1.35;margin:28px 0 23px;font-weight:650}.bench-main h1 em{font-style:normal;display:inline-block;color:#8053ad;position:relative;white-space:nowrap}.bench-main h1 em:after{content:'';height:7px;position:absolute;bottom:2px;background:#dbc9ed;left:0;right:0;z-index:-1;transform:rotate(-2deg)}.bench-description{font-size:13px;line-height:2.1;color:#96879f}.bench-actions{display:flex;align-items:center;gap:25px;margin-top:25px}.bench-signature{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:24px;margin-top:35px}.bench-signature img{border-radius:50%;object-fit:cover}.bench-signature strong{display:block;font-size:11px;font-weight:500;color:#897497}.bench-signature span{display:block;font-size:10px;color:#b0a0bb;margin-top:6px}.bench-board{border-left:1px solid #dcd2e4;padding-left:30px}.board-head{display:flex;justify-content:space-between;font-size:9px;letter-spacing:1px;color:#9c86af;margin-bottom:18px}.board-head>span:last-child{font-size:18px}.featured-note{display:block;background:#e9dff2;padding:28px 28px 0;border:1px solid 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/* Round 2: evidence, participation and publishing */
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/* editorial.css */
/* A quiet, readable editorial layout. */
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/* Learning-first, calm and beginner friendly. */
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/* Purple learning community: broad hero, clear section bands, useful content cards. */
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/* usability.css */
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/* alignment.css */
/* Shared page grid: navigation, section headings and footer use one edge. */
:root{--page-width:1240px;--page-gutter:40px;--ink:#302838;--muted:#706779;--line:#e4deea}
.wrap{width:calc(100% - var(--page-gutter)*2);max-width:var(--page-width);margin-inline:auto}
header{height:84px;padding-inline:max(var(--page-gutter),calc((100% - var(--page-width))/2));gap:24px;background:#fff;border-bottom:1px solid var(--line)}
.brand{font-size:20px;letter-spacing:0}.brand small{color:#82758e}nav{gap:23px;font-size:14px}.header-actions{gap:18px}.search-trigger{border-radius:6px;padding:10px 12px}.search-trigger span{font-size:12px}.github{font-size:12px}.button{border-radius:6px;min-height:44px}.header-actions .small{padding:12px 18px}
.purple-hero{background:#eee8f5}.purple-hero:after{opacity:.45}.purple-hero-inner{min-height:450px;grid-template-columns:1.3fr 1fr;gap:64px;padding:48px 0}.purple-hero-copy>span{font-size:13px;color:#795b91}.purple-hero h1{font-size:clamp(36px,3.4vw,48px);line-height:1.45;letter-spacing:0;margin:22px 0 24px;color:#3f2c50}.purple-hero-copy>p{font-size:16px;line-height:1.9;color:#675972}.purple-hero-copy>div{margin:28px 0 18px}.purple-hero-copy>small{font-size:12px;color:#7c6b89}.purple-mascot{width:320px;justify-self:center}.purple-mascot>img{width:270px;height:270px}.mascot-greeting{color:#79558f;font-size:12px}.mascot-message{font-size:12px;color:#7c658b;letter-spacing:0}
.first-lesson-bar{margin-top:28px;padding:22px 26px;border-color:var(--line);border-left:3px solid #9270b4;border-radius:6px}.first-lesson-bar strong{color:#503b61;font-weight:600}.first-lesson-bar span{font-size:14px;color:#75677e}.first-lesson-bar>a{font-size:13px;color:#77509a}
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/* Xinzhi notebook: plum ink, paper and small editorial annotations. */
:root{--purple:#755095;--paper:#faf9f6;--line:#e5dfe7}body{background:var(--paper)}
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@media(max-width:800px){.purple-hero:after{width:170px;height:170px;top:auto;bottom:72px;right:20%}.purple-hero h1:after{width:54px;height:3px;margin-top:18px}.purple-mascot>img{border-width:6px;box-shadow:7px 8px 0 #d9cbe3}.stage-overview>a:before{margin-bottom:14px}.lesson-cover:after{right:10px;width:60px;height:80px}.lesson-cover>strong{letter-spacing:1px}}
@media(prefers-reduced-motion:reduce){.stage-overview>a{transition:none}}
/* Task shortcuts and comfortable small-screen reading. */
.task-start{display:grid;grid-template-columns:1fr 2.2fr;gap:32px;padding-block:32px;margin-top:38px;border-block:1px solid var(--line)}.task-start-heading>span{font-size:11px;color:#8b7396;letter-spacing:1px}.task-start-heading h2{font-size:21px;line-height:1.6;color:#493655;font-weight:600;margin:12px 0 0}.task-start-links{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:center}.task-start-links a{display:flex;flex-direction:column;gap:12px;border-left:1px solid #ded1e5;padding-left:22px;min-height:62px;justify-content:center}.task-start-links strong{font-size:15px;font-weight:500;color:#503c5e}.task-start-links span{font-size:12px;line-height:1.8;color:#796783}.task-start-links a:hover strong{color:#82559f;text-decoration:underline;text-underline-offset:5px}.lesson-card-text h3{text-wrap:pretty}.home-section-title>a,.account-actions a{padding-block:7px}.follow-section{grid-template-columns:.85fr 1.6fr;gap:60px}.follow-accounts .account-qr{height:258px}.follow-accounts .qr-public img{width:205px;height:205px;max-width:100%;object-fit:contain}.follow-accounts .qr-video img{max-height:238px;max-width:100%;object-fit:contain}.account-heading h3{margin-bottom:18px}.follow-intro p{color:#716478}.follow-intro .text-link{display:inline-block;padding-block:10px}.footer-top>div{font-size:12px}.lesson-article p,.guide-article p{line-height:2}.lesson-article a,.guide-article p a{text-underline-offset:4px}.button:focus-visible{outline-offset:5px}
@media(max-width:1000px){.task-start{grid-template-columns:1fr;gap:24px}.task-start-heading h2{margin-top:8px}.follow-section{gap:32px}}
@media(max-width:800px){.task-start{padding-block:26px;margin-top:28px;gap:20px}.task-start-heading h2{font-size:21px}.task-start-links{grid-template-columns:1fr;gap:0}.task-start-links a{border-left:0;border-bottom:1px solid #e8dfea;padding:16px 0;gap:6px}.task-start-links a:last-child{border-bottom:0;padding-bottom:0}.task-start-links strong{font-size:15px}.task-start-links span{font-size:12px}.beginner-grid{grid-template-columns:1fr;gap:16px}.beginner-grid>a{display:grid;grid-template-columns:105px minmax(0,1fr)}.lesson-cover{height:100%;min-height:192px;padding:20px 14px;border-bottom:0;border-right:1px solid #e3d8e9}.lesson-cover>strong{font-size:25px;margin-top:24px}.lesson-cover>small{line-height:1.8}.lesson-cover:after{right:-15px;bottom:-17px;opacity:.65}.lesson-card-text{padding:19px 18px}.lesson-card-text h3{font-size:16px;margin:10px 0}.lesson-card-text p{font-size:13px;line-height:1.8;margin-bottom:15px}.follow-section{grid-template-columns:1fr;gap:28px}.follow-account{grid-template-columns:1fr 166px}.follow-accounts .account-qr{height:220px;width:166px}.follow-accounts .qr-public img{width:142px;height:142px}.follow-accounts .qr-video img{max-height:200px}.account-actions{gap:5px}.footer-top>div{font-size:12px;gap:18px}.footer-bottom{flex-wrap:wrap;gap:12px}}
@media(max-width:800px){.lesson-cover>strong{font-size:22px;letter-spacing:0;white-space:nowrap}}
/* Workplace learning: readable content and a restrained common vocabulary. */
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@media(max-width:800px){body{font-size:14px}.purple-hero h1{font-size:33px}.purple-hero-copy>p{font-size:15px}.purple-hero-copy>small{font-size:12px}.workplace-cases{grid-template-columns:1fr}.workplace-cases .lesson-cover{height:100%;min-height:205px}.workplace-cases .lesson-cover>strong{font-size:19px;white-space:normal;letter-spacing:0;line-height:1.7}.task-start-links span,.lesson-card-text p,.task-projects p,.task-projects dd,.home-agentfamily p,.knowledge-bridge p,.follow-intro p{font-size:14px}.case-page{padding-block:24px 32px}.case-heading h1{font-size:29px}.case-heading p{font-size:15px}.case-notice,.audience-note{padding:17px;font-size:14px}.case-block{padding-block:28px}.case-block h2{font-size:23px}.case-block p,.case-block li,.case-block pre,.case-block table,.case-checks label,.case-next a{font-size:14px}.case-block pre{padding:17px}.case-block .prompt-example{padding:17px}.case-block th,.case-block td{padding:12px}.case-checks label{padding:14px}.case-next{display:grid;gap:5px;margin-left:0}.lesson-article p,.lesson-article li,.guide-article p,.guide-article li,.ops-paper p,.ops-paper li,.knowledge-index p,.lesson-row p,.learning-note,.learning-page-heading p{font-size:14px!important}.task-start-heading h2{font-size:22px}.scenario-navigation a,.filter-bar button{font-size:14px}.lesson-card-text>span{font-size:12px}}