.is-home{background:#fff}.is-home footer{margin-top:0}.home-inner{max-width:1240px;padding:0 20px;margin:auto}.home-hero{background:linear-gradient(180deg,#e9e8ff 0,#f7f7ff 37%,#fff 65%);padding:48px 0 48px}.home-hero h1{text-align:center;font-size:38px;letter-spacing:-1.3px;line-height:1.6;margin:0;font-weight:700;color:#15151f}.home-hero mark{background:#4541ff;color:white;padding:1px 5px;box-decoration-break:clone;-webkit-box-decoration-break:clone}.hero-description{text-align:center;font-size:17px;color:#83818e;margin:13px 0 0;line-height:1.9}.hero-description>span{color:var(--primary)}.home-upload{margin:42px auto 0;max-width:640px;min-height:88px;border:1px dashed #7d79ff;background:#f2f2ff;border-radius:13px;display:flex;align-items:center;justify-content:center;gap:18px;padding:17px 20px;transition:background .2s}.home-upload.dragging{background:#dedcff;outline:3px solid #cac6ff}.home-upload .primary{min-width:120px}.home-tool-picker{display:flex;gap:8px;align-items:center;font-size:12px;color:#9491aa}.home-tool-picker select{max-width:180px;border:0;background:transparent;color:#595573;font-size:12px;padding:7px 0;cursor:pointer}.home-drop-hint{font-size:11px;color:#a29eb8}.hero-caption{text-align:center;font-size:10px;color:#a6a1b4;letter-spacing:.3px;margin:10px 0 0}.home-category-track{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:20px;margin-top:42px}.home-category{border-radius:18px;background:#f7f8fa;overflow:hidden;min-width:0;transition:transform .2s,box-shadow .2s}.home-category:hover{transform:translateY(-4px);box-shadow:0 12px 28px #3731480c}.category-cover{display:block;width:100%;text-align:left;padding:17px 17px 18px;background:var(--category-color);color:white;min-height:151px}.violet{--category-color:#7849f3;--cover-light:#b4a0ff;--cover-dark:#382580}.amber{--category-color:#ff9314;--cover-light:#ffcd79;--cover-dark:#913f0b}.mint{--category-color:#00c87c;--cover-light:#85f6c0;--cover-dark:#06583f}.cyan{--category-color:#1fa9e7;--cover-light:#8ddffd;--cover-dark:#114b91}.cobalt{--category-color:#4875ff;--cover-light:#9ec6ff;--cover-dark:#14277e}.category-cover-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.category-cover-icon{width:43px;height:43px;background:#ffffff1a;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:24px}.category-cover-top small{background:#ffffff20;padding:4px 8px;border-radius:20px;font-size:12px}.category-cover h2{font-size:19px;margin:0 0 7px;font-weight:600}.category-cover h2>span{float:right;opacity:.65;font-size:18px}.category-cover p{font-size:11px;margin:0;color:#ffffffc9;line-height:1.7;white-space:nowrap;letter-spacing:-.25px}.category-feature{margin:15px 14px;background:white;border:1px solid #eeedf1;border-radius:9px;display:flex;align-items:center;justify-content:space-between;gap:6px;padding:9px 10px;font-size:10px;min-height:37px}.category-feature>span{color:#97949e;white-space:nowrap}.category-feature a,.category-feature button{font-size:10px;color:#7064ff;background:none;padding:0;text-align:right;line-height:1.5}.home-recommended{padding:47px 0;background:#f7f8fa}.home-section-title{text-align:center;margin-bottom:35px}.home-section-title h2{font-size:28px;letter-spacing:-.5px;color:#181820;margin:0 0 12px}.home-section-title p{font-size:16px;color:#92909a;margin:0;line-height:1.8}.home-tools{gap:17px}.home-tools .tool-card{min-height:126px;padding:20px}.home-tools .tool-card p{margin-top:10px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.home-tools .tool-icon{height:52px;width:52px}.home-tools .card-top h3{font-size:15px}.home-more{text-align:center;margin-top:35px}.home-more .outline{min-width:160px;gap:25px;min-height:45px;background:transparent}.home-reading{background:white;padding:46px 0 50px}.reading-tabs{display:flex;justify-content:center;align-items:center;gap:30px}.reading-tabs button{background:none;color:#97939d;font-size:23px;font-weight:500;padding:7px 0}.reading-tabs button[aria-selected=true]{color:#20202a;font-weight:650}.reading-tabs>span{height:24px;border-left:1px solid #e8e6ed}.reading-intro{color:#a5a1ad;font-size:12px;text-align:center;margin:10px 0 30px}.reading-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}.reading-card{display:block;padding:15px;background:#f7f8fa;border-radius:17px;min-width:0;transition:transform .2s,box-shadow .2s}.reading-card:hover{transform:translateY(-3px);box-shadow:0 10px 24px #2520450b}.article-cover{aspect-ratio:2/1.03;border-radius:8px;color:white;background:radial-gradient(ellipse at 105% 5%,var(--cover-light),transparent 65%),linear-gradient(135deg,var(--cover-dark),var(--category-color));position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:space-between;padding:15px 16px;isolation:isolate}.article-cover:before{content:'';position:absolute;width:150px;height:150px;border:1px solid #ffffff24;border-radius:22px;transform:rotate(30deg);right:-30px;top:-38px;z-index:-1}.article-cover:after{content:'';position:absolute;border:1px solid #ffffff26;border-radius:50%;width:135px;height:135px;left:35%;bottom:-100px;z-index:-1}.article-cover>span{font-size:8px;letter-spacing:1.6px;color:#ffffffbd}.article-cover>strong{font-size:25px;letter-spacing:-.7px;line-height:1.5;font-family:Consolas,"Microsoft YaHei",sans-serif;font-weight:600;white-space:nowrap}.article-cover>small{font-size:7px;letter-spacing:1.5px;opacity:.65}.article-cover>small>span{float:right;font-size:13px}.reading-card h3{font-size:14px;line-height:1.8;font-weight:500;color:#42404d;margin:13px 0 13px;min-height:50px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.article-meta{display:flex;justify-content:space-between;color:#a29ea8;font-size:10px;gap:8px}.home-floating{position:fixed;bottom:24px;right:18px;display:flex;flex-direction:column;gap:9px;z-index:5}.home-floating button{background:#6058ff;color:white;width:32px;height:32px;border-radius:8px;font-size:20px;box-shadow:0 4px 12px #6058ff17}.learning-page{max-width:1240px}.learning-page .reading-grid{margin-top:30px}.article-page{max-width:880px}.article-page>.article-cover{aspect-ratio:3.2/1;padding:24px 34px;border-radius:18px}.article-page>.article-cover>strong{font-size:45px}.article-body{padding:35px;background:white;border-radius:20px;margin-top:22px}.article-body h1{font-size:29px;line-height:1.6;margin:16px 0 22px}.article-body p{font-size:15px;line-height:2.1;color:#777282;margin-bottom:20px}.article-body .primary{margin-top:15px}
@media(min-width:1400px){.home-inner{max-width:1240px}.home-category-track{gap:20px}.home-hero{padding-top:46px}.home-category-track{margin-top:43px}}
@media(max-width:1100px){.home-category-track{gap:14px;overflow:auto;grid-template-columns:repeat(5,210px);padding-bottom:8px;scroll-snap-type:x proximity}.home-category{scroll-snap-align:start}.home-tools .tool-card{padding:17px}.home-tools .tool-icon{width:45px;height:45px}.home-tools .card-top h3{font-size:13px}.reading-grid{gap:16px}.reading-card{padding:12px}.article-cover>strong{font-size:20px}.home-hero h1{font-size:34px}}
@media(max-width:800px){.home-hero{padding:34px 0}.home-hero h1{font-size:27px;letter-spacing:-.7px}.hero-description{font-size:13px;max-width:480px;margin:14px auto 0}.home-upload{margin-top:28px;gap:14px}.home-drop-hint{display:none}.home-category-track{margin-top:28px}.home-section-title h2{font-size:24px}.home-section-title p{font-size:13px}.home-recommended{padding:35px 0}.home-tools{gap:12px}.reading-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.reading-tabs button{font-size:21px}.reading-card h3{font-size:13px}.home-reading{padding:32px 0}.article-cover>strong{font-size:24px}.home-floating{right:8px;bottom:15px}.home-floating button{width:29px;height:29px}.article-body{padding:24px}.article-body h1{font-size:23px}}
@media(max-width:480px){.home-inner{padding:0 16px}.home-hero h1{font-size:26px;max-width:330px;margin:auto;line-height:1.75;letter-spacing:-.7px}.hero-description{font-size:12px;max-width:300px}.home-upload{padding:14px;gap:9px;justify-content:space-between;min-height:76px}.home-tool-picker>span{display:none}.home-tool-picker select{max-width:158px;font-size:11px}.home-upload .primary{min-width:101px;font-size:12px;padding:10px 12px}.hero-caption{font-size:9px}.home-category-track{grid-template-columns:repeat(5,205px);margin-right:-16px;padding-right:16px}.home-tools .tool-card{padding:14px 11px;min-height:122px}.home-tools .tool-icon{width:34px;height:34px;font-size:21px;border-radius:10px}.home-tools .card-top h3{font-size:12px}.home-tools .tool-card p{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.home-tools .card-top{gap:8px}.home-section-title p{font-size:12px}.home-more{margin-top:25px}.reading-grid{gap:13px}.reading-card{padding:10px}.article-cover{padding:11px 9px;aspect-ratio:1.5/1}.article-cover>span{font-size:6px;letter-spacing:.6px}.article-cover>strong{font-size:18px}.article-cover>small{font-size:6px;letter-spacing:.8px}.reading-card h3{font-size:12px;min-height:44px;margin-top:10px}.article-meta{font-size:9px}.article-meta>span:last-child{display:none}.reading-tabs{gap:23px}.reading-tabs button{font-size:20px}.article-page>.article-cover{aspect-ratio:2/1;padding:20px}.article-page>.article-cover>strong{font-size:29px}.article-body{padding:20px}.article-body h1{font-size:22px}.article-body p{font-size:14px}}

.reading-summary{font-size:12px;color:#7d7a90;line-height:1.7}.learn-search{display:block;max-width:480px;margin:24px 0}.article-source{padding:22px;background:#f3f1ff;border-radius:14px;margin:30px 0;overflow-wrap:anywhere}.article-source a{color:#5547e9}.article-body p{white-space:pre-wrap;overflow-wrap:anywhere}

.learn-search input{display:block;width:100%;margin-top:9px;padding:12px 14px;border:1px solid #ddd8ed;border-radius:10px;font:inherit;font-size:13px;background:white}.learn-search input:focus{outline:2px solid #bcb0ed}
.article-body .rendered-content{font-size:15px;line-height:1.95;color:#3e394c;overflow-wrap:anywhere}.article-body .rendered-content h2{font-size:25px;margin:34px 0 13px}.article-body .rendered-content h3{font-size:20px;margin:28px 0 10px}.article-body .rendered-content img{display:block;max-width:100%;height:auto;margin:26px auto;border-radius:14px}.article-body .rendered-content blockquote{margin:24px 0;padding:14px 20px;border-left:4px solid #7460da;background:#f4f1fc;color:#615b72}.article-body .rendered-content pre{padding:18px;background:#282535;color:#f5f2ff;border-radius:12px;overflow:auto}.article-body .rendered-content code{font-family:Consolas,monospace}.article-body .rendered-content a{color:#5742c4;text-decoration:underline}.article-body .rendered-content ul,.article-body .rendered-content ol{padding-left:26px}.article-body .rendered-content table{display:block;max-width:100%;overflow:auto;border-collapse:collapse}.article-body .rendered-content th,.article-body .rendered-content td{border:1px solid #ddd7e8;padding:8px 12px}