html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video{margin:0;padding:0;border:0;font-size:100%;font-family:sans-serif;vertical-align:baseline}article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section{display:block}body{line-height:1}ol,ul{list-style:none}blockquote,q{quotes:none}blockquote:before,blockquote:after,q:before,q:after{content:"";content:none}table{border-collapse:collapse;border-spacing:0}a{text-decoration:none}img{display:block;width:100%}svg{width:100%;height:100%;fill:currentColor}header{background-color:#fff;box-shadow:0 4px 12px #0000000f;padding:16px 0;position:sticky;top:0;z-index:100}header .header-container{display:flex;justify-content:space-between;align-items:center}header .logo-group{display:flex;align-items:center;gap:12px;text-decoration:none}header .logo-icon{overflow:hidden;width:40px;height:40px;text-align:center;line-height:40px;font-size:2rem;color:#fff;border-radius:10px;background-color:transparent}header .logo-text{font-size:1.6rem;font-weight:900;color:var(--primary-color, #16a34a);letter-spacing:1px}header .header-right{z-index:1;display:flex;align-items:center;gap:20px}header .header-right .header-badge{background-color:#f0fdf4;color:var(--primary-color);padding:8px 16px;border-radius:30px;font-size:.95rem;font-weight:700;border:2px solid #bbf7d0}header .header-right .icon-wrap.globe{color:#16a34a}header .header-right .language-switcher{cursor:pointer;position:relative}header .header-right .language-switcher .language-dropdown{display:none}header .header-right .language-switcher .language-dropdown.show{z-index:11;display:flex;flex-direction:column;position:absolute;top:56px;right:-30px;min-width:110px;max-height:300px;border:1px solid #ddd;background-color:#fff;box-shadow:0 5px 10px #0000001a;scrollbar-width:thin;scrollbar-color:#80939b #f1f1f1}header .header-right .language-switcher .language-dropdown.show a{line-height:60px;text-align:center;color:#333}header .header-right .language-switcher .language-dropdown.show a:hover,header .header-right .language-switcher .language-dropdown.show a.curr{color:#111;background-color:#f0f0f0}header .header-right .icon-wrap{width:26px;height:26px;color:#fff}footer{margin-top:50px;padding:40px 0 0;background-color:#e7e5e4;color:var(--text-muted, #57534e);font-size:.95rem}footer .copyright{text-align:center}footer .footer-bottom{margin-top:30px;text-align:center;border-top:1px solid #000;padding-top:12px;padding-bottom:12px}footer .footer-bottom .footer-links{display:flex;justify-content:center;flex-wrap:wrap;gap:36px;list-style:none;padding:0;font-size:18px}footer .footer-bottom .footer-links li a{color:#57534e;text-decoration:none}footer .footer-bottom .footer-links li a:hover{text-decoration:underline}@media(max-width:768px){header{position:static}header .header-right .header-badge{display:none}header .header-right .language-switcher .language-dropdown.show{right:-10px}header .header-right .icon-wrap{width:26px;height:26px}footer .footer-bottom .footer-links{gap:18px}}:root{--bg-color: #f5f5f4;--text-main: #292524;--text-muted: #57534e;--primary-color: #16a34a;--primary-hover: #15803d;--card-bg: #ffffff;--font-base: 18px;--color-memory: #3b82f6;--color-focus: #10b981;--color-judge: #f59e0b;--color-calc: #8b5cf6;--color-lang: #ec4899}body{font-family:Arial,Helvetica,sans-serif;font-size:var(--font-base);line-height:1.6;color:var(--text-main);background-color:var(--bg-color)}.container{max-width:1000px;margin:0 auto;padding:0 20px}.cut{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.cut-3{overflow:hidden;display:-webkit-box!important;-webkit-line-clamp:3;-webkit-box-orient:vertical}.ad-box{background-color:#edf2f7;border:1px dashed #cbd5e0}.ad-box .ad-title{font-size:16px;line-height:1.5;text-align:center}.training-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}.training-card{background-color:#fff;border-radius:16px;padding:30px 24px;border:1px solid #f0f0f0;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;text-align:center;box-shadow:0 4px 6px #00000005;position:relative;overflow:hidden}.training-card:hover{transform:translateY(-6px);box-shadow:0 12px 24px #00000014;border-color:#e5e7eb}.training-card:hover .card-icon{transform:scale(1.1)}.training-card h3{font-size:1.25rem;margin-bottom:12px;font-weight:700;color:var(--text-main)}.training-card p{font-size:.95rem;color:var(--text-muted);margin-bottom:28px;line-height:1.6;flex-grow:1;overflow:hidden;display:-webkit-box!important;-webkit-line-clamp:3;-webkit-box-orient:vertical}.card-icon{overflow:hidden;width:100px;height:100px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2.5rem;margin:0 auto 20px;background-color:#f3f4f6;transition:transform .3s ease}.hero{background:linear-gradient(135deg,#dcfce7,#f0fdf4);border-radius:20px;text-align:center;margin:40px 0;padding:50px 20px;box-shadow:0 4px 20px #0000000a;border:1px solid #bbf7d0;position:relative;overflow:hidden}.hero:before{content:"✨";position:absolute;top:20px;left:30px;font-size:2.5rem;opacity:.6}.hero:after{content:"🧠";position:absolute;bottom:20px;right:30px;font-size:4rem;opacity:.15}.hero h1{font-size:2.2rem;color:var(--primary-hover);margin-bottom:20px;font-weight:900;letter-spacing:1px;position:relative}.hero p{color:var(--text-main);max-width:750px;margin:0 auto;font-size:1.1rem;line-height:1.8;font-weight:500;position:relative;z-index:2}.module-section{background-color:var(--card-bg);border-radius:16px;padding:35px;margin-bottom:35px;box-shadow:0 4px 15px #0000000a;border:1px solid #e7e5e4;border-top:8px solid #ccc}.module-header{margin-bottom:25px;text-align:center}.module-header h2{font-size:1.6rem;margin-bottom:12px;display:inline-flex;align-items:center;justify-content:center}.module-header p{font-size:1.05rem;color:var(--text-muted);max-width:800px;margin:0 auto}.mod-memory{border-top-color:var(--color-memory)}.mod-memory h2{color:var(--color-memory)}.mod-memory .card-icon{background-color:#eff6ff;color:var(--color-memory)}.mod-memory .btn-start{background-color:var(--color-memory)}.mod-memory .btn-start:hover{background-color:#2563eb}.mod-focus{border-top-color:var(--color-focus)}.mod-focus h2{color:var(--color-focus)}.mod-focus .card-icon{background-color:#ecfdf5;color:var(--color-focus)}.mod-focus .btn-start{background-color:var(--color-focus)}.mod-focus .btn-start:hover{background-color:#059669}.mod-judge{border-top-color:var(--color-judge)}.mod-judge h2{color:var(--color-judge)}.mod-judge .card-icon{background-color:#fffbeb;color:var(--color-judge)}.mod-judge .btn-start{background-color:var(--color-judge)}.mod-judge .btn-start:hover{background-color:#d97706}.mod-calc{border-top-color:var(--color-calc)}.mod-calc h2{color:var(--color-calc)}.mod-calc .card-icon{background-color:#f5f3ff;color:var(--color-calc)}.mod-calc .btn-start{background-color:var(--color-calc)}.mod-calc .btn-start:hover{background-color:#7c3aed}.mod-lang{border-top-color:var(--color-lang)}.mod-lang h2{color:var(--color-lang)}.mod-lang .card-icon{background-color:#fdf2f8;color:var(--color-lang)}.mod-lang .btn-start{background-color:var(--color-lang)}.mod-lang .btn-start:hover{background-color:#db2777}.btn-start{box-sizing:border-box;color:#fff;border:none;border-radius:30px;padding:12px 20px;font-size:1.05rem;font-weight:700;cursor:pointer;transition:all .2s ease;width:100%;display:flex;align-items:center;justify-content:center;gap:8px;box-shadow:0 4px 10px #0000001a}.btn-start:hover{transform:translateY(-2px);box-shadow:0 6px 15px #00000026}.btn-start:active{transform:scale(.98)}.seo-section{background-color:var(--card-bg);border-radius:20px;padding:40px;margin-top:60px;margin-bottom:20px;box-shadow:0 4px 15px #0000000a;border:1px solid #e7e5e4}.seo-section h2{font-size:1.8rem;color:var(--primary-hover);margin-bottom:30px;text-align:center;font-weight:700}.seo-content{margin-bottom:30px;background-color:#f0fdf4;padding:25px;border-radius:12px;border-left:5px solid var(--primary-color)}.seo-content:last-child{margin-bottom:0}.seo-content h3{font-size:1.35rem;color:var(--text-main);margin-bottom:15px;display:flex;align-items:center;gap:10px;border-bottom:1px solid #dcfce7;padding-bottom:10px}.seo-content p{font-size:1.05rem;color:var(--text-muted);line-height:1.8;margin-bottom:15px}.seo-content p:last-child{margin-bottom:0}.seo-list{list-style-type:none;padding-left:0;margin-bottom:15px}.seo-list li{position:relative;padding-left:24px;margin-bottom:10px;line-height:1.6;color:var(--text-muted)}.seo-list li:before{content:"";position:absolute;left:0;top:.65em;width:8px;height:8px;border-radius:50%;background-color:var(--primary-color)}.tutorial{background-color:#fff;padding:25px;border-radius:12px;margin-bottom:30px;max-width:800px;margin-left:auto;margin-right:auto;border:1px solid #d6d3d1}.tutorial h3{font-size:1.15rem;margin-bottom:16px;color:var(--text-main);text-align:center}.tutorial p{font-size:1rem;margin-bottom:15px}.tutorial p:last-child{margin-bottom:0}.copyright{text-align:center;font-size:.95rem;margin:0}@media(max-width:600px){.hero h1{font-size:1.6rem}.module-section{padding:20px}.card-icon{width:100px;height:100px;font-size:2.2rem}.seo-section{padding:25px 20px;margin-top:40px}.seo-section h2{font-size:1.5rem}.seo-content{padding:20px 15px}}