:root{--ink:#18313b;--muted:#62747a;--line:#d8e0df;--paper:#fff;--soft:#f2f6f4;--teal:#08766d;--teal-dark:#075d57;--yellow:#f4c95d;--red:#c94b45;--blue:#2b6f9e;--green:#4d7f52;--shadow:0 8px 24px rgba(24,49,59,.09)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f7f9f8;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;letter-spacing:0}a{color:inherit}button,input,select,textarea{font:inherit;letter-spacing:0}.sl-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:70px;padding:12px max(22px,calc((100% - 1240px)/2));border-bottom:1px solid var(--line);background:rgba(255,255,255,.97)}.sl-brand{display:flex;align-items:baseline;gap:10px;text-decoration:none}.sl-brand strong{font-size:22px}.sl-brand span{color:var(--muted);font-size:13px}.sl-header nav{display:flex;align-items:center;gap:5px}.sl-header nav a{min-height:42px;padding:11px 12px;border-bottom:2px solid transparent;text-decoration:none;font-size:14px;font-weight:700}.sl-header nav a:hover,.sl-header nav a.active{border-color:var(--teal);color:var(--teal)}main{min-height:calc(100vh - 140px)}.sl-intro{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(320px,.75fr);gap:44px;align-items:center;width:min(1240px,calc(100% - 40px));min-height:430px;margin:auto;padding:54px 0}.sl-kicker{display:block;margin-bottom:9px;color:var(--teal);font-size:12px;font-weight:900}.sl-intro h1,.sl-filter-panel h1{margin:0;font-size:48px;line-height:1.1}.sl-intro p{max-width:720px;margin:20px 0;color:var(--muted);font-size:18px;line-height:1.75}.sl-actions{display:flex;gap:12px;flex-wrap:wrap}.sl-button{display:inline-grid;place-items:center;min-height:46px;padding:11px 18px;border:1px solid var(--teal);border-radius:6px;background:var(--teal);color:#fff;text-decoration:none;font-weight:800;cursor:pointer}.sl-button:hover{background:var(--teal-dark)}.sl-button.secondary{background:#fff;color:var(--teal)}.sl-preview{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:18px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}.sl-preview b{grid-column:1/-1;padding:28px;border-left:5px solid var(--yellow);background:#fff7dc;font-size:25px}.sl-preview span{display:grid;place-items:center;min-height:110px;padding:16px;border-top:4px solid var(--teal);background:var(--soft);font-weight:800;text-align:center}.sl-preview span:nth-of-type(2){border-color:var(--blue)}.sl-preview span:nth-of-type(3){border-color:var(--red)}.sl-preview span:nth-of-type(4){border-color:var(--green)}.sl-band{padding:48px max(20px,calc((100% - 1240px)/2))}.sl-band:nth-child(even){border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}.sl-lessons-band{background:#eef4f2!important}.sl-section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}.sl-section-heading h2{margin:0;font-size:30px}.sl-summary,.sl-count{color:var(--muted);font-weight:700}.sl-subject-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.sl-subject-card{display:flex;min-width:0;min-height:190px;flex-direction:column;padding:20px;border:1px solid var(--line);border-top:5px solid var(--teal);border-radius:6px;background:#fff;text-decoration:none;box-shadow:0 3px 12px rgba(24,49,59,.04)}.sl-subject-card:nth-child(4n+2){border-top-color:var(--blue)}.sl-subject-card:nth-child(4n+3){border-top-color:var(--yellow)}.sl-subject-card:nth-child(4n+4){border-top-color:var(--red)}.sl-subject-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.sl-subject-card h3{margin:0 0 8px;font-size:20px;overflow-wrap:anywhere}.sl-subject-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.6}.sl-subject-card ul{display:flex;gap:6px;flex-wrap:wrap;margin:auto 0 0;padding:16px 0 0;list-style:none}.sl-subject-card li,.sl-tag{padding:5px 7px;border:1px solid #cbd8d5;border-radius:4px;background:#f4f8f7;color:#49645f;font-size:11px}.sl-subject-card b{margin-top:12px;color:var(--teal);font-size:13px}.sl-lesson-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.sl-lesson-card{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;padding:22px;border:1px solid var(--line);border-radius:6px;background:#fff}.sl-lesson-card h3{margin:6px 0 9px;font-size:20px;overflow-wrap:anywhere}.sl-lesson-card p{margin:0;color:var(--muted);line-height:1.65}.sl-lesson-card .sl-meta{color:var(--teal);font-size:12px;font-weight:800}.sl-lesson-card .sl-card-actions{display:flex;align-items:flex-end;gap:7px;flex-direction:column}.sl-card-actions a{display:grid;place-items:center;min-width:92px;min-height:42px;padding:9px 12px;border:1px solid var(--teal);border-radius:5px;color:var(--teal);text-decoration:none;font-size:13px;font-weight:800}.sl-card-actions a:last-child{background:var(--teal);color:#fff}.sl-workspace{display:grid;grid-template-columns:300px minmax(0,1fr);gap:32px;width:min(1240px,calc(100% - 40px));margin:0 auto;padding:36px 0 60px}.sl-filter-panel{position:sticky;top:98px;align-self:start;padding:24px;border:1px solid var(--line);background:#fff}.sl-filter-panel h1{margin-bottom:24px;font-size:30px}.sl-filter-panel label{display:grid;gap:7px;margin-top:15px;color:var(--muted);font-size:13px;font-weight:800}.sl-filter-panel input,.sl-filter-panel select{width:100%;min-height:46px;padding:10px;border:1px solid #b9c8c5;border-radius:5px;background:#fff;color:var(--ink);font-size:16px}.sl-filter-panel button{width:100%;margin-top:18px}.sl-account-note{margin-top:22px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:13px;line-height:1.6}.sl-results{min-width:0}.sl-results .sl-lesson-list{grid-template-columns:1fr}.student-list .sl-lesson-card{border-left:5px solid var(--yellow)}.sl-lesson-root{width:min(1120px,calc(100% - 36px));margin:0 auto;padding:36px 0 70px}.sl-lesson-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:start;padding-bottom:30px;border-bottom:1px solid var(--line)}.sl-lesson-head h1{max-width:840px;margin:8px 0 12px;font-size:38px;line-height:1.25}.sl-lesson-head p{margin:0;color:var(--muted);line-height:1.65}.sl-mode-control{display:flex;padding:4px;border:1px solid var(--line);background:#fff}.sl-mode-control button{min-height:42px;padding:9px 14px;border:0;background:transparent;color:var(--muted);font-weight:800;cursor:pointer}.sl-mode-control button.active{background:var(--teal);color:#fff}.sl-progress-strip{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:center;margin:20px 0;padding:16px;border-left:5px solid var(--yellow);background:#fff7dc}.sl-progress-bar{height:9px;overflow:hidden;background:#e0e3d8}.sl-progress-bar i{display:block;height:100%;background:var(--teal)}.sl-lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px}.sl-module{margin-top:22px;padding:24px;border:1px solid var(--line);background:#fff}.sl-module h2{margin:0 0 16px;font-size:24px}.sl-module h3{margin:20px 0 10px;font-size:17px}.sl-module p,.sl-module li{line-height:1.75}.sl-module ol,.sl-module ul{padding-left:22px}.sl-prompt{position:relative;padding:18px 18px 60px;border-left:5px solid var(--blue);background:#edf5fa;white-space:pre-wrap;line-height:1.7}.sl-copy{position:absolute;right:12px;bottom:12px;width:auto;min-height:38px;padding:7px 11px;border:1px solid var(--blue);border-radius:4px;background:#fff;color:var(--blue);font-weight:800;cursor:pointer}.sl-side{align-self:start}.sl-side .sl-module{position:sticky;top:92px}.sl-time-options{display:flex;gap:7px;flex-wrap:wrap}.sl-time-options span{padding:7px 9px;border:1px solid var(--line);background:var(--soft);font-size:12px;font-weight:800}.sl-quiz fieldset{margin:18px 0;padding:16px;border:1px solid var(--line)}.sl-quiz legend{padding:0 8px;font-weight:800}.sl-option{display:flex;align-items:flex-start;gap:9px;margin:9px 0;padding:11px;border:1px solid #dce4e2;background:#fafcfc;cursor:pointer}.sl-option input{margin-top:4px}.sl-feedback{min-height:48px;padding:12px;border-left:4px solid var(--teal);background:#eef6f4;line-height:1.6}.sl-evidence{width:100%;min-height:120px;padding:12px;border:1px solid #b9c8c5;border-radius:5px;font-size:16px;resize:vertical}.sl-empty{grid-column:1/-1;padding:32px;border:1px dashed #aebfbb;background:#fff;text-align:center}.sl-muted{color:var(--muted)}.sl-footer{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:70px;padding:18px max(20px,calc((100% - 1240px)/2));border-top:1px solid var(--line);background:#fff;color:var(--muted);font-size:13px}
@media(max-width:980px){.sl-header{align-items:flex-start;flex-direction:column;gap:7px}.sl-header nav{width:100%;overflow-x:auto}.sl-header nav a{white-space:nowrap}.sl-intro{grid-template-columns:1fr}.sl-subject-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.sl-workspace{grid-template-columns:1fr}.sl-filter-panel{position:static}.sl-lesson-layout{grid-template-columns:1fr}.sl-side .sl-module{position:static}}
@media(max-width:640px){html,body{max-width:100%;overflow-x:hidden}.sl-header{padding:10px 14px}.sl-brand span{display:none}.sl-intro{width:calc(100% - 28px);min-height:0;padding:32px 0}.sl-intro h1{font-size:34px}.sl-intro p{font-size:16px}.sl-preview{grid-template-columns:1fr}.sl-preview b{grid-column:auto}.sl-preview span{min-height:74px}.sl-band{padding:34px 14px}.sl-section-heading{align-items:flex-start;flex-direction:column}.sl-subject-grid,.sl-lesson-list{grid-template-columns:1fr}.sl-subject-card{min-height:170px}.sl-lesson-card{grid-template-columns:1fr}.sl-lesson-card .sl-card-actions{align-items:stretch;display:grid;grid-template-columns:1fr 1fr}.sl-workspace{width:calc(100% - 28px);padding-top:20px}.sl-lesson-root{width:calc(100% - 28px);padding-top:24px}.sl-lesson-head{grid-template-columns:1fr}.sl-lesson-head h1{font-size:29px}.sl-mode-control{display:grid;grid-template-columns:1fr 1fr}.sl-module{padding:18px}.sl-progress-strip{grid-template-columns:1fr}.sl-footer{align-items:flex-start;flex-direction:column}.sl-option,.sl-button,.sl-card-actions a,.sl-mode-control button{min-height:46px}}
.sl-subject-root{width:100%}.sl-subject-hero{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:end;width:min(1240px,calc(100% - 40px));margin:auto;padding:52px 0 44px}.sl-subject-hero h1{margin:8px 0 14px;font-size:44px;line-height:1.15}.sl-subject-hero p{margin:0;color:var(--muted);font-size:17px}.sl-back-link{display:inline-block;margin-bottom:30px;color:var(--teal);font-size:13px;font-weight:800;text-decoration:none}.sl-subject-stats{display:grid;grid-template-columns:repeat(3,minmax(110px,1fr));border:1px solid var(--line);background:#fff}.sl-subject-stats div{display:grid;gap:4px;padding:20px;border-right:1px solid var(--line);text-align:center}.sl-subject-stats div:last-child{border-right:0}.sl-subject-stats strong{font-size:28px}.sl-subject-stats span{color:var(--muted);font-size:12px}.sl-profile-section{padding:48px max(20px,calc((100% - 1240px)/2));border-top:1px solid var(--line);background:#fff}.sl-profile-section.sl-profile-soft{background:#eef4f2}.sl-profile-heading{max-width:760px;margin-bottom:24px}.sl-profile-heading h2{margin:0 0 8px;font-size:30px}.sl-profile-heading p{margin:0;color:var(--muted);line-height:1.65}.sl-profile-heading-row{display:flex;align-items:end;justify-content:space-between;gap:24px;max-width:none}.sl-skill-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:0;padding:0;list-style:none}.sl-skill-list li{display:grid;grid-template-columns:54px minmax(0,1fr);gap:16px;min-height:142px;padding:22px;border:1px solid var(--line);border-left:5px solid var(--teal);background:#fff}.sl-skill-list li:nth-child(even){border-left-color:var(--blue)}.sl-skill-list>li>span{color:var(--teal);font-size:23px;font-weight:900}.sl-skill-list h3{margin:0 0 9px;font-size:19px}.sl-skill-list p{margin:0;color:var(--muted);line-height:1.7}.sl-application-list{border-top:1px solid #cbd8d5}.sl-application-list article{display:grid;grid-template-columns:50px minmax(0,1fr) auto;gap:18px;align-items:center;min-height:105px;padding:18px 8px;border-bottom:1px solid #cbd8d5}.sl-application-list h3{margin:0 0 6px;font-size:19px}.sl-application-list p{margin:0;color:var(--muted);line-height:1.6}.sl-application-list b{padding:6px 9px;border:1px solid #b8cbc6;border-radius:4px;background:#fff;color:var(--teal);font-size:12px}.sl-area-index{color:var(--muted);font-size:14px;font-weight:900}.sl-application-cases{display:grid;gap:12px}.sl-application-case{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,.65fr);gap:28px;padding:22px;border:1px solid var(--line);background:#fff}.sl-application-case h3{margin:6px 0 8px;font-size:20px}.sl-application-case p{margin:0;color:var(--muted);line-height:1.65}.sl-application-case dl{display:grid;gap:12px;margin:0}.sl-application-case dl div{display:grid;grid-template-columns:72px 1fr;gap:10px}.sl-application-case dt{color:var(--teal);font-size:12px;font-weight:900}.sl-application-case dd{margin:0;line-height:1.55}.sl-left-empty{text-align:left}
@media(max-width:980px){.sl-subject-hero{grid-template-columns:1fr}.sl-subject-stats{width:100%}.sl-application-case{grid-template-columns:1fr}}
@media(max-width:640px){.sl-subject-hero{width:calc(100% - 28px);padding:30px 0}.sl-subject-hero h1{font-size:31px}.sl-back-link{margin-bottom:22px}.sl-subject-stats{grid-template-columns:1fr}.sl-subject-stats div{grid-template-columns:48px 1fr;align-items:center;border-right:0;border-bottom:1px solid var(--line);text-align:left}.sl-subject-stats div:last-child{border-bottom:0}.sl-profile-section{padding:34px 14px}.sl-profile-heading h2{font-size:26px}.sl-profile-heading-row{align-items:flex-start;flex-direction:column}.sl-skill-list{grid-template-columns:1fr}.sl-skill-list li{grid-template-columns:42px 1fr;min-height:0;padding:18px}.sl-application-list article{grid-template-columns:38px 1fr;gap:10px}.sl-application-list b{grid-column:2;justify-self:start}.sl-application-case{padding:18px}.sl-application-case dl div{grid-template-columns:1fr}.sl-profile-heading-row .sl-actions{display:grid;width:100%;grid-template-columns:1fr 1fr}}
.sl-resource-section{background:#fff8df}.sl-resource-list{display:grid;gap:12px}.sl-resource-list article{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;padding:22px;border:1px solid #d9c47a;background:#fff}.sl-resource-list h3{margin:0 0 8px;font-size:20px}.sl-resource-list p{margin:0;color:var(--muted);line-height:1.65}.sl-resource-list .sl-button{min-width:150px}
@media(max-width:640px){.sl-resource-list article{grid-template-columns:1fr;padding:18px}.sl-resource-list .sl-button{width:100%}}