pre code.hljs{display:block;overflow-x:auto;padding:1em}code.hljs{padding:3px 5px}.hljs{color:#24292e;background:#fff}.hljs-doctag,.hljs-keyword,.hljs-meta .hljs-keyword,.hljs-template-tag,.hljs-template-variable,.hljs-type,.hljs-variable.language_{color:#d73a49}.hljs-title,.hljs-title.class_,.hljs-title.class_.inherited__,.hljs-title.function_{color:#6f42c1}.hljs-attr,.hljs-attribute,.hljs-literal,.hljs-meta,.hljs-number,.hljs-operator,.hljs-variable,.hljs-selector-attr,.hljs-selector-class,.hljs-selector-id{color:#005cc5}.hljs-regexp,.hljs-string,.hljs-meta .hljs-string{color:#032f62}.hljs-built_in,.hljs-symbol{color:#e36209}.hljs-comment,.hljs-code,.hljs-formula{color:#6a737d}.hljs-name,.hljs-quote,.hljs-selector-tag,.hljs-selector-pseudo{color:#22863a}.hljs-subst{color:#24292e}.hljs-section{color:#005cc5;font-weight:700}.hljs-bullet{color:#735c0f}.hljs-emphasis{color:#24292e;font-style:italic}.hljs-strong{color:#24292e;font-weight:700}.hljs-addition{color:#22863a;background-color:#f0fff4}.hljs-deletion{color:#b31d28;background-color:#ffeef0}.recommendation-card[data-v-3cff6f54]{display:flex;flex-direction:column;gap:22px}.recommendation-card .visual-head[data-v-3cff6f54]{margin-bottom:0}.recommendation-title[data-v-3cff6f54]{font-size:clamp(25px,3vw,34px);font-weight:700;color:#244e3f;line-height:1.4}.recommendation-description[data-v-3cff6f54]{margin:0;line-height:1.85;color:#53685b}.recommendation-highlights[data-v-3cff6f54]{padding:0;margin:0;list-style:none;display:grid;gap:12px}.recommendation-highlights li[data-v-3cff6f54]{background:#fff;border:1px solid #d4dfce;border-radius:10px;padding:16px;display:flex;gap:18px;align-items:center;overflow-wrap:anywhere}.recommendation-highlights span[data-v-3cff6f54]{color:#6c8858;font-family:monospace}.recommendation-bottom[data-v-3cff6f54]{display:flex;flex-wrap:wrap;align-items:center;gap:20px;justify-content:space-between;margin-top:auto}.recommendation-bottom small[data-v-3cff6f54]{display:block;margin-top:8px;color:#65796c}.recommendation-bottom strong[data-v-3cff6f54]{color:#244e3f}.recommendation-title[data-v-3cff6f54],.recommendation-description[data-v-3cff6f54]{overflow-wrap:anywhere}:root{font-family:Microsoft YaHei,PingFang SC,sans-serif;color:#202f38;background:#fafbf9;font-synthesis:none;line-height:1.7;--green:#23634f;--muted:#64726f;--line:#e0e6df}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}button,a,input,select,summary{outline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #568b73}button{background:#fff;color:#243b32;border:1px solid #ccd8cf;border-radius:7px;padding:10px 16px}button:hover{border-color:#23634f}h1,h2,h3,p{margin:0}h1{font-size:44px;line-height:1.35;letter-spacing:-1px}h2{font-size:26px;line-height:1.5}h3{font-size:18px}p{color:var(--muted)}.header{height:86px;display:flex;align-items:center;justify-content:space-between;gap:24px;max-width:1400px;padding:0 48px;margin:auto;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px}.brand-mark{font:700 26px Georgia,serif;width:40px;height:40px;border-radius:10px;background:#23634f;color:#fff;display:grid;place-items:center}.brand strong{font-size:19px}.brand strong span{font-size:14px;display:block;line-height:1.1;font-weight:400;color:var(--muted)}.header nav{display:flex;gap:32px;font-size:15px}.header nav a{padding:24px 0;color:#65746b}.header nav .router-link-active:not([href="#/"]),.header nav .selected{color:var(--green);font-weight:600}.header-cta{font-size:14px;border:1px solid #c4d2c7;padding:8px 17px;border-radius:7px}main{max-width:1340px;margin:auto;padding:0 42px 70px}.hero{display:grid;grid-template-columns:1.1fr 1fr;gap:70px;padding:74px 0 65px;align-items:center}.eyebrow{font-size:13px;color:var(--green);display:block;margin-bottom:16px;font-weight:600}.hero h1{font-size:clamp(36px,4vw,54px);line-height:1.4}.hero p{margin-top:24px;font-size:17px;line-height:1.9}.actions{display:flex;gap:18px;align-items:center;margin-top:28px;flex-wrap:wrap}.primary{display:inline-block;background:var(--green);color:#fff;border:1px solid var(--green);border-radius:7px;padding:12px 22px}.primary:hover{background:#194c3c}.primary span{margin-left:18px}.text-link{font-size:14px;color:var(--green)}.hero-note{font-size:13px;color:var(--muted);margin-top:22px}.hero-visual{background:#edf2e9;border-radius:24px;padding:24px 28px 20px;position:relative;box-shadow:12px 16px #f0eee1}.visual-head{display:flex;justify-content:space-between;font-size:12px;color:#617157;border-bottom:1px solid #ccd7c2;padding-bottom:18px;margin-bottom:20px}.call{background:#fff;border:1px solid #d3dfcb;border-left:3px solid #638855;border-radius:7px;padding:12px 16px;display:flex;align-items:center;gap:20px;margin-bottom:12px}.call>span{font:20px Consolas,monospace}.call small{font-size:12px;color:var(--muted)}.c2{margin-left:30px}.c3{margin-left:60px}.c4{margin-left:90px;background:#28634c;color:#fff;display:flex;flex-wrap:wrap;gap:8px 20px;border:0}.c4 small{color:#dce9d5}.c4 b{font-weight:400;font-size:11px;width:100%;color:#dce9d5}.visual-footer{display:flex;justify-content:space-between;margin:22px 0 0;font-size:13px;color:#637d59}.section{padding:34px 0 42px;border-top:1px solid var(--line)}.section-heading{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:26px}.section-heading .eyebrow{margin-bottom:7px}.muted{color:var(--muted)}.section-heading .muted{font-size:14px}.method-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:35px}.method-grid article{padding:18px 0}.method-grid b{font:30px Georgia,serif;color:#7c9372}.method-grid h3{margin:12px 0 8px}.method-grid p{font-size:14px}.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.course-card{border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden}.course-art{background:#edf1e5;min-height:145px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:14px;padding:20px;text-align:center;color:#355742}.course-art .mono{font:23px Consolas,monospace}.course-art>span:last-child:not(.mono){font-size:12px;color:#6c7b63}.card-body{padding:23px}.tag{font-size:12px;color:var(--green);background:#edf3ec;border-radius:4px;padding:4px 8px;display:inline-block}.card-body h3,.card-body h2{margin:14px 0 10px}.card-body p{font-size:14px}.meta{color:var(--muted);font-size:13px;margin:18px 0}.save{margin-left:10px;font-size:13px;padding:10px}.continue{background:#f0f5ee;border-left:3px solid #537b4b;padding:22px 27px;display:flex;justify-content:space-between;align-items:center;gap:24px;margin:20px 0 36px}.continue .eyebrow{margin-bottom:5px}.continue a{color:var(--green);white-space:nowrap}.page-title{padding:55px 0 30px}.page-title p{margin-top:16px;max-width:750px}.filters{display:flex;gap:20px;background:#fff;border:1px solid var(--line);border-radius:9px;padding:20px;margin:10px 0 25px}.filters label{font-size:13px;display:flex;flex-direction:column;gap:8px;color:var(--muted)}input,select{background:#fafbf9;border:1px solid #d0dace;border-radius:6px;padding:10px 13px;color:#283c31}.search-label{flex:1}.filters+p{margin-bottom:20px}.empty{padding:70px 15px;text-align:center}.empty p{margin:20px 0}.path-layout{display:grid;grid-template-columns:250px 1fr;gap:50px}.path-layout aside{padding:24px;background:#f0f4ec;border-radius:10px;height:max-content}.path-layout aside p{font-size:14px;margin-top:15px}.roadmap article{display:flex;align-items:center;gap:28px;border-bottom:1px solid var(--line);padding:28px 0}.roadmap article>span{font:30px Georgia,serif;color:#7c9570}.roadmap article>div{flex:1}.roadmap article p{font-size:14px;margin-top:8px}.roadmap a{color:var(--green);white-space:nowrap}.roadmap small{color:var(--muted);white-space:nowrap}.study-list{display:grid;grid-template-columns:repeat(2,1fr);gap:25px}.study-list article{padding:30px;background:#fff;border:1px solid var(--line);border-radius:12px}.study-list h2{margin:12px 0}progress{width:100%;height:8px;accent-color:var(--green);margin-top:20px}.reset-data{margin-top:35px;color:var(--muted);font-size:14px}.reset-data p{margin:12px 0}.breadcrumb{padding:28px 0;font-size:13px;color:var(--muted)}.breadcrumb a{color:var(--green)}.course-intro{display:grid;grid-template-columns:1fr 320px;gap:60px;padding:24px 0 48px}.course-intro p{margin-top:20px}.course-intro aside{padding:24px;background:#edf2e9;border-radius:10px}.lesson-list>a{display:flex;align-items:center;gap:28px;padding:23px 12px;border-bottom:1px solid var(--line)}.lesson-list>a:hover{background:#f0f4ec}.lesson-list>a>div{flex:1}.lesson-list p{font-size:14px;margin-top:5px}.lesson-list>a>span:last-child{font-size:13px;color:var(--muted);white-space:nowrap}.lesson-number{font:26px Georgia,serif;color:#69885d}.learn-layout{display:grid;grid-template-columns:220px minmax(0,1fr) 165px;gap:35px}.lesson-sidebar,.toc{position:sticky;top:20px;align-self:start}.lesson-sidebar p{font-size:13px;margin:12px 0 20px}.lesson-sidebar nav{display:flex;flex-direction:column;gap:6px}.lesson-sidebar nav a{display:flex;gap:9px;padding:11px 9px;font-size:13px;border-radius:5px;color:#667267}.lesson-sidebar nav a.current{background:#e9f0e5;color:var(--green);font-weight:600}.lesson-sidebar nav span{min-width:16px}.sidebar-note{border-top:1px solid var(--line);padding-top:20px}.lesson-content{min-width:0;padding-bottom:25px}.lesson-content h1{font-size:32px}.goal{background:#edf3e9;border-left:3px solid #5b8451;padding:18px 22px;margin:24px 0 32px;font-size:14px}.goal p{margin-top:7px}.video-section{margin:20px 0 34px}.video-placeholder{aspect-ratio:16/9;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#edf0e8;border:1px solid #d8e2d1;border-radius:10px;margin-top:18px;padding:25px;text-align:center}.play-icon{font-size:30px;color:var(--green);margin-bottom:14px}.video-placeholder p{font-size:13px;margin:10px 0 18px}.video-section iframe{width:100%;aspect-ratio:16/9;border:0;margin-top:18px;border-radius:8px}.video-source{display:flex;gap:15px;align-items:flex-start;font-size:12px;margin:12px 0}.video-source a{color:var(--green);white-space:nowrap}.small{font-size:12px}.tutorial{font-size:16px;line-height:1.95}.tutorial h2{font-size:24px;margin:38px 0 16px;scroll-margin-top:25px}.tutorial p{color:#43554c;margin:15px 0}.tutorial li{margin:8px 0;color:#43554c}.tutorial pre{position:relative;background:#f2f4f5;border:1px solid #e0e5e3;border-radius:8px;padding:50px 20px 20px;overflow:auto;font:14px/1.8 Consolas,monospace}.tutorial pre code{white-space:pre;tab-size:4}.copy{position:absolute;top:10px;right:10px;font-size:11px;padding:5px 10px}.tutorial table{width:100%;border-collapse:collapse;font-size:14px;margin:20px 0}.tutorial th,.tutorial td{padding:12px;border:1px solid var(--line);text-align:left}.tutorial th{background:#edf2e9}.toc{font-size:12px;display:flex;flex-direction:column;gap:12px;border-left:1px solid var(--line);padding-left:20px}.toc strong{margin-bottom:5px}.toc a{color:var(--muted)}.toc a:hover{color:var(--green)}.quiz{margin:35px 0;padding:25px;background:#f1f5ed;border-radius:10px;scroll-margin-top:20px}.quiz h2{font-size:19px}.quiz-options{display:flex;flex-direction:column;gap:10px;margin-top:20px}.quiz-options button{text-align:left;font-size:14px;display:flex;gap:15px}.quiz-options button span{color:var(--muted)}.quiz-options .correct{border-color:#398350;background:#e0efdf}.quiz-options .wrong{border-color:#b77b57;background:#f9eee7}.feedback{font-size:14px;margin-top:18px}.answer{border:1px solid var(--line);padding:20px;border-radius:8px;font-size:14px}.answer summary{cursor:pointer;color:var(--green)}.answer p{margin-top:15px}.lesson-bottom{display:flex;gap:12px;justify-content:space-between;flex-wrap:wrap;border-top:1px solid var(--line);margin-top:35px;padding-top:25px}.lesson-bottom button{font-size:13px}.mobile-directory{display:none}.notice{background:#fff2df;color:#80592f;padding:12px;text-align:center;font-size:14px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}footer{border-top:1px solid var(--line);max-width:1400px;margin:auto;padding:30px 48px;display:flex;justify-content:space-between;font-size:13px;color:var(--muted)}footer strong{color:#344b3e}footer p{margin-top:6px}@media(max-width:1100px){.header{padding:0 25px}.header nav{gap:20px}main{padding:0 25px 50px}.hero{gap:35px}.learn-layout{grid-template-columns:195px minmax(0,1fr);gap:25px}.toc{display:none}.course-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:740px){.header{height:auto;min-height:82px;padding:18px 20px;flex-wrap:wrap;gap:18px}.header nav{order:3;width:100%;justify-content:space-between;gap:10px;font-size:13px}.header nav a{padding:0}.header-cta{font-size:12px}main{padding:0 18px 35px}.hero{grid-template-columns:1fr;padding:35px 0 40px;gap:30px}.hero h1{font-size:36px}.hero p{font-size:15px}.hero-visual{padding:18px;box-shadow:5px 8px #f0eee1}.call{gap:10px}.call>span{font-size:17px}.call small{font-size:11px}.c2{margin-left:15px}.c3{margin-left:30px}.c4{margin-left:45px}.method-grid{grid-template-columns:1fr;gap:0}.method-grid article{border-bottom:1px solid var(--line)}.method-grid b{float:left;margin-right:22px;margin-top:10px}.method-grid h3{margin:10px 0 5px}.section-heading{align-items:flex-start}.section-heading .muted{display:none}h1{font-size:32px}h2{font-size:23px}.course-grid,.study-list{grid-template-columns:1fr}.filters{flex-wrap:wrap;padding:15px;gap:15px}.search-label{flex-basis:100%}.path-layout,.course-intro{grid-template-columns:1fr;gap:25px}.roadmap article{gap:15px;flex-wrap:wrap}.roadmap article>div{flex-basis:75%}.roadmap article a,.roadmap small{margin-left:45px}.lesson-list>a{gap:14px}.lesson-list>a>span:last-child{display:none}.learn-layout{display:block}.lesson-sidebar{display:none;position:static;background:#f0f4eb;padding:18px;margin-bottom:24px}.lesson-sidebar.open{display:block}.mobile-directory{display:block;margin:0 0 20px}.lesson-content h1{font-size:28px}.lesson-bottom{gap:10px}.lesson-bottom button.primary{flex:1}.tutorial table{font-size:12px}.tutorial th,.tutorial td{padding:8px}.video-source{flex-direction:column;gap:5px}.continue{padding:18px;gap:15px}.continue h3{font-size:15px}.continue a{font-size:13px}.desktop{display:none}footer{padding:25px 20px;gap:20px;flex-direction:column}.page-title{padding:35px 0 20px}}.brand-logo{display:block;width:44px;height:44px;object-fit:contain;flex-shrink:0}