:root{--black:#171717;--ink:#171717;--white:#fff;--muted:#737373;--line:#e7e7e7;--soft:#f5f5f7;--purple:#7c4dff;--purple-soft:#f2edff;--font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;background:var(--black);color:var(--ink);font:15px/1.8 var(--font);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default}h1,h2,h3,h4,p,figure{margin:0}h1,h2,h3,h4{line-height:1.4}h1,h2{letter-spacing:-1.3px}h3{letter-spacing:-.35px}ul,ol{margin:14px 0;padding-left:21px}li+li{margin-top:8px}button{color:inherit}img{max-width:100%;display:block}:focus-visible{outline:3px solid #a588ff;outline-offset:5px}::selection{background:#cab8ff;color:#171717}[hidden]{display:none!important}.wrap{max-width:1280px;padding:0 42px;margin:auto}.skip{position:absolute;left:18px;top:-90px;background:#fff;padding:10px 15px;z-index:100}.skip:focus{top:12px}.site-header{background:var(--black);color:#fff}.header-inner{display:flex;align-items:center;gap:44px;height:88px}.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:22px;white-space:nowrap;letter-spacing:-.8px}.brand svg{width:27px;height:27px;flex:none}.main-nav{display:flex;align-items:center;gap:29px;margin-left:28px}.main-nav a{color:#b7b7bc;font-size:14px;white-space:nowrap}.main-nav a:hover,.main-nav a.active{color:#fff}.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}.icon-button{display:inline-flex;align-items:center;justify-content:center;background:transparent;color:inherit;width:44px;height:44px;border:1px solid transparent;border-radius:8px;padding:0}.icon-button:hover{background:#ffffff0d;border-color:#ffffff26}.icon-button 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svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.7}.button:hover{background:#eeeaf8}.button.purple{background:var(--purple);color:white;border-color:var(--purple)}.button.purple:hover{background:#6940db}.button.outline{background:transparent;color:#eee;border-color:#54545c}.hero-link{font-size:13px;color:#ddd}.hero-link:hover{color:#c6adff}.hero-cover{position:relative;border-radius:18px;overflow:hidden;aspect-ratio:1.25;background:#26242d}.hero-cover img{width:100%;height:100%;object-fit:cover}.hero-cover .image-label{position:absolute;left:19px;bottom:19px;padding:5px 10px;border-radius:5px;background:#ffffffed;color:#242129;font-size:11px}.content-surface{background:#fff;border-radius:38px 38px 0 0;min-height:65vh}.content-section{padding:58px 0}.content-section+.content-section{border-top:1px solid var(--line)}.section-head{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:27px}.section-head 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25px}.article-card{min-width:0;display:flex;flex-direction:column}.card-cover{aspect-ratio:1.65;border-radius:13px;overflow:hidden;background:#efedf4;display:block}.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .25s}.card-cover:hover img{transform:scale(1.035)}.card-body{padding:17px 1px 0;display:flex;flex-direction:column;flex:1}.card-kind{font-size:11px;color:#71657f;margin-bottom:8px}.card-title{font-size:19px;line-height:1.55;font-weight:650}.card-title a:hover{color:var(--purple)}.card-summary{font-size:13px;line-height:1.8;color:var(--muted);margin-top:10px}.card-meta{display:flex;gap:8px;align-items:center;color:#707078;font-size:11px;margin-top:auto;padding-top:17px}.card-meta .save-button{margin-left:auto}.save-button{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid transparent;background:transparent;border-radius:7px;color:#73737d;width:44px;height:44px;padding:0}.save-button svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6}.save-button:hover{background:#f3effc;color:var(--purple)}.save-button[aria-pressed=true]{color:var(--purple)}.save-button[aria-pressed=true] svg{fill:#ded2ff;stroke:#7245da}.save-button.full{width:auto;padding:8px 14px;border-color:#ddd;font-size:12px}.start-section{background:#f6f5f9;border-top:1px solid #efedf3;padding:58px 0}.start-layout{display:grid;grid-template-columns:.8fr 1.6fr;gap:65px;align-items:start}.start-copy h2{font-size:33px;line-height:1.45;max-width:290px}.start-copy p{color:#777;font-size:14px;margin-top:17px;max-width:280px}.start-copy .text-link{margin-top:23px}.path-list{background:white;border:1px solid #e5e2ec;border-radius:13px;overflow:hidden}.path-item{display:grid;grid-template-columns:38px 1fr 20px;gap:18px;align-items:center;padding:22px 25px;border-bottom:1px solid 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a{display:block;color:#79648e;text-decoration:underline;text-decoration-color:#d9cee4;text-underline-offset:3px;margin-top:8px;font-size:12px}.reader-bottom{display:flex;gap:13px;align-items:center;flex-wrap:wrap;margin-top:27px}.read-button{border:1px solid #d7cce3;color:#806b97;background:#fff;border-radius:6px;font-size:12px;padding:9px 14px}.read-button[aria-pressed=true]{background:#eee7f8;color:#684b89}.next-article{border-top:1px solid #e4ddeb;margin-top:35px;padding-top:21px}.next-article small{font-size:11px;color:#a093ad;display:block;margin-bottom:7px}.next-article a{font-size:17px;color:#44314f;font-weight:550}.start-intro{display:grid;grid-template-columns:1.25fr 1fr;gap:50px;align-items:center;margin-bottom:40px}.start-intro img{border-radius:16px;aspect-ratio:1.65;object-fit:cover}.start-intro h1{font-size:43px}.start-intro p{font-size:15px;color:#807b89;margin-top:18px}.learning-list{max-width:930px}.learning-card{display:grid;grid-template-columns:54px 1fr 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@media(min-width:1600px){.hero{padding-top:66px;padding-bottom:88px}.hero h1{font-size:64px}.hero-grid{gap:80px}}
@media(max-width:1080px){.wrap{padding:0 28px}.header-inner{gap:24px}.main-nav{margin-left:0;gap:22px}.hero-grid{gap:34px}.hero h1{font-size:46px}.hero p{font-size:14px}.hero{padding:35px 0 58px}.article-head-grid{gap:30px}.article-head h1{font-size:33px}.reader{gap:35px;grid-template-columns:180px minmax(0,1fr)}.card-title{font-size:17px}.start-layout{gap:35px}.tools-grid{gap:14px}.tool-card{padding:19px}.closing h2{font-size:29px}.start-intro h1{font-size:36px}}
@media(max-width:800px){.header-inner{height:75px}.main-nav{gap:17px}.main-nav a{font-size:13px}.bookmark-link{display:none}.hero h1{font-size:39px;letter-spacing:-1.5px}.hero-grid{grid-template-columns:1.15fr .85fr;gap:25px}.hero-buttons{gap:15px}.hero-cover{aspect-ratio:.95}.hero .hero-kind{font-size:11px}.hero p{font-size:13px}.hero .button{font-size:12px;padding:11px 15px}.hero-link{font-size:11px}.content-surface{border-radius:28px 28px 0 0}.article-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:29px 20px}.tools-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.section-head h2{font-size:27px}.start-layout{grid-template-columns:.9fr 1.4fr;gap:30px}.start-copy h2{font-size:27px}.path-item{padding:19px 18px;gap:13px}.path-item h3{font-size:14px}.path-item p{font-size:11px}.reader{grid-template-columns:1fr;gap:20px}.reader-nav{position:static;border-bottom:1px solid var(--line);padding-bottom:18px;display:flex;gap:10px;flex-wrap:wrap}.reader-nav>p{width:100%;margin-bottom:0}.reader-nav a{padding:4px 8px;background:#f6f3fa;border-radius:4px;font-size:11px}.reader-nav .related-tools{display:none}.article-head-grid{grid-template-columns:1.2fr .8fr;gap:24px}.article-head h1{font-size:29px}.article-head .description{font-size:13px}.article-cover{aspect-ratio:.95}.article-head{padding-bottom:35px}.page-heading h1{font-size:36px}.start-intro{gap:30px}.start-intro h1{font-size:32px}.closing h2{font-size:27px}.footer-links{gap:18px}.tool-detail-grid{grid-template-columns:1fr}}
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