:root{--el-color-white:#fff;--el-color-black:#000;--el-color-primary-rgb:64, 158, 255;--el-color-success-rgb:103, 194, 58;--el-color-warning-rgb:230, 162, 60;--el-color-danger-rgb:245, 108, 108;--el-color-error-rgb:245, 108, 108;--el-color-info-rgb:144, 147, 153;--el-font-size-extra-large:20px;--el-font-size-large:18px;--el-font-size-medium:16px;--el-font-size-base:14px;--el-font-size-small:13px;--el-font-size-extra-small:12px;--el-font-family:"Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", Arial, sans-serif;--el-font-weight-primary:500;--el-font-line-height-primary:24px;--el-index-normal:1;--el-index-top:1000;--el-index-popper:2000;--el-border-radius-base:4px;--el-border-radius-small:2px;--el-border-radius-round:20px;--el-border-radius-circle:100%;--el-transition-duration:.3s;--el-transition-duration-fast:.2s;--el-transition-function-ease-in-out-bezier:cubic-bezier(.645, .045, .355, 1);--el-transition-function-fast-bezier:cubic-bezier(.23, 1, 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.el-message__badge{position:absolute;top:-8px;right:-8px}.el-message__content{padding:0;font-size:14px;line-height:1}.el-message__content:focus{outline-width:0}.el-message .el-message__closeBtn{cursor:pointer;color:var(--el-message-close-icon-color);font-size:var(--el-message-close-size)}.el-message .el-message__closeBtn:focus{outline-width:0}.el-message .el-message__closeBtn:hover{color:var(--el-message-close-hover-color)}.el-message-fade-enter-from,.el-message-fade-leave-to{opacity:0}.el-message-fade-enter-from.is-left,.el-message-fade-enter-from.is-right,.el-message-fade-leave-to.is-left,.el-message-fade-leave-to.is-right{transform:translateY(-100%)}.el-message-fade-enter-from.is-left.is-bottom,.el-message-fade-enter-from.is-right.is-bottom,.el-message-fade-leave-to.is-left.is-bottom,.el-message-fade-leave-to.is-right.is-bottom{transform:translateY(100%)}.el-message-fade-enter-from.is-center,.el-message-fade-leave-to.is-center{transform:translate(-50%,-100%)}.el-message-fade-enter-from.is-center.is-bottom,.el-message-fade-leave-to.is-center.is-bottom{transform:translate(-50%,100%)}.el-popper{--el-popper-border-radius:var(--el-popover-border-radius,4px);--el-popper-bg-color-light:var(--el-bg-color-overlay);--el-popper-bg-color-dark:var(--el-text-color-primary);border-radius:var(--el-popper-border-radius);z-index:2000;overflow-wrap:break-word;word-break:normal;visibility:visible;min-width:10px;padding:5px 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";background:var(--el-text-color-primary);box-sizing:border-box;width:10px;height:10px;position:absolute;transform:rotate(45deg)}.el-popper[data-popper-placement^=top]>.el-popper__arrow{bottom:-5px}.el-popper[data-popper-placement^=top]>.el-popper__arrow:before{border-bottom-right-radius:2px}.el-popper[data-popper-placement^=bottom]>.el-popper__arrow{top:-5px}.el-popper[data-popper-placement^=bottom]>.el-popper__arrow:before{border-top-left-radius:2px}.el-popper[data-popper-placement^=left]>.el-popper__arrow{right:-5px}.el-popper[data-popper-placement^=left]>.el-popper__arrow:before{border-top-right-radius:2px}.el-popper[data-popper-placement^=right]>.el-popper__arrow{left:-5px}.el-popper[data-popper-placement^=right]>.el-popper__arrow:before{border-bottom-left-radius:2px}.el-popper[data-popper-placement^=top]>.el-popper__arrow:before{border-top-color:#0000!important;border-left-color:#0000!important}.el-popper[data-popper-placement^=bottom]>.el-popper__arrow:before{border-bottom-color:#0000!important;border-right-color:#0000!important}.el-popper[data-popper-placement^=left]>.el-popper__arrow:before{border-bottom-color:#0000!important;border-left-color:#0000!important}.el-popper[data-popper-placement^=right]>.el-popper__arrow:before{border-top-color:#0000!important;border-right-color:#0000!important}:root{--color-paper: 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12px}*{box-sizing:border-box}.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}html,body{min-width:0;overflow-x:clip;background:var(--color-paper)}:root{font-family:var(--font-body);color:var(--color-ink);background:var(--color-paper);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}body{margin:0;min-height:100vh}button,input,textarea,select{font:inherit;letter-spacing:0}a{color:inherit;text-decoration:none}button{cursor:pointer}button:disabled{cursor:not-allowed}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.spin{animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fade-rise{0%{opacity:0;transform:translateY(var(--rise))}to{opacity:1;transform:translateY(0)}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes pop-in{0%{opacity:0;transform:scale(.96)}to{opacity:1;transform:scale(1)}}.enter{animation:fade-rise var(--dur-long) var(--ease-out) both}.enter-1{animation:fade-rise var(--dur-long) var(--ease-out) both;animation-delay:60ms}.enter-2{animation:fade-rise var(--dur-long) var(--ease-out) both;animation-delay:.12s}.enter-3{animation:fade-rise var(--dur-long) var(--ease-out) both;animation-delay:.18s}.stagger{animation:fade-rise var(--dur-long) var(--ease-out) both;animation-delay:calc(var(--i, 0) * 65ms + 80ms)}.route-fade-enter-active{transition:opacity var(--dur-md) var(--ease-out),transform var(--dur-md) var(--ease-out)}.route-fade-leave-active{transition:opacity var(--dur-fast) 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var(--banner-height) - var(--space-xl));overflow:auto}.course-lesson-group{padding-top:var(--space-xs)}.course-lesson-group h3{display:flex;align-items:center;gap:var(--space-xs);margin:0;padding:var(--space-xs) var(--space-sm);color:var(--color-ink);font-size:var(--text-xs)}.course-lesson-group h3 span{display:grid;place-items:center;width:1.25rem;height:1.25rem;border-radius:var(--radius-input);background:var(--color-paper-2);color:var(--color-muted)}.course-lesson-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.course-content-nav{padding:var(--space-sm);border-left:var(--rule-thin) solid var(--color-rule);border-right:var(--rule-thin) solid var(--color-rule);background:var(--color-paper-2)}.course-content-nav-title{display:flex;align-items:center;justify-content:space-between;gap:var(--space-xs);padding:var(--space-xs) 0 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var(--space-lg))}@media(max-width:980px){.course-detail-layout{grid-template-columns:15rem minmax(0,1fr)}.course-content-nav{grid-column:1 / -1;position:relative;top:auto;max-height:14rem;border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card)}.course-content-reveal{position:absolute;top:var(--space-md);right:0}.course-detail-layout.course-directory-hidden{grid-template-columns:2.4rem minmax(0,1fr)}.course-detail-layout.content-directory-hidden{grid-template-columns:15rem 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minmax(0,1fr);gap:clamp(var(--space-md),2.5vw,var(--space-2xl));width:min(100%,var(--layout-page-width));max-width:none;margin:0 auto;padding-top:0;border-top:0}.course-detail-layout.course-directory-hidden{grid-template-columns:2.4rem 11rem minmax(0,1fr)}.course-detail-layout.content-directory-hidden{grid-template-columns:16rem 2.4rem minmax(0,1fr)}.course-detail-layout.course-directory-hidden.content-directory-hidden{grid-template-columns:2.4rem 2.4rem minmax(0,1fr)}.course-lesson-nav{padding:0;border:0;border-radius:0;background:transparent}.course-directory-panel{overflow-x:hidden;scrollbar-width:none;-ms-overflow-style:none}.course-directory-panel::-webkit-scrollbar{display:none;width:0;height:0}.course-directory-panel .course-lesson-group,.course-directory-panel .course-lesson-group h3,.course-directory-panel .course-lesson-group>button{min-width:0;max-width:100%}.course-directory-panel .course-lesson-group h3,.course-directory-panel .course-lesson-name{overflow-wrap:anywhere;white-space:normal}.course-directory-course{display:grid;gap:var(--space-2xs);padding:0 0 var(--space-lg);border-bottom:var(--rule-thin) solid var(--color-rule)}.course-directory-course .course-back-link{width:fit-content;margin-bottom:var(--space-md);color:var(--color-muted);font-size:var(--text-xs);line-height:1}.course-directory-course .course-back-link:hover{color:var(--color-accent-strong)}.course-directory-course>p{margin:0 0 var(--space-3xs);color:var(--color-accent-strong);font-size:var(--text-xs);font-weight:760;line-height:1.4}.course-directory-course h1{margin:0;overflow-wrap:anywhere;color:var(--color-ink);font-size:1.25rem;font-weight:760;line-height:1.32}.course-directory-course>span{display:-webkit-box;overflow:hidden;margin-top:var(--space-3xs);color:var(--color-muted);font-size:.8125rem;line-height:1.65;-webkit-box-orient:vertical;-webkit-line-clamp:3}.course-directory-meta{display:flex;flex-wrap:wrap;gap:var(--space-2xs) var(--space-sm);margin-top:var(--space-2xs);color:var(--color-muted);font-size:var(--text-xs);line-height:1}.course-directory-meta span{display:inline-flex;align-items:center;gap:var(--space-3xs);white-space:nowrap}.course-directory-meta svg{color:var(--color-ink-2)}.course-lesson-nav-title{display:grid;grid-template-columns:minmax(0,1fr) auto auto;align-items:center;gap:var(--space-xs);padding:var(--space-md) 0 var(--space-sm);border-bottom:var(--rule-thin) solid var(--color-rule)}.course-lesson-nav-title strong{min-width:0;color:var(--color-ink);font-size:var(--text-sm);line-height:1;white-space:nowrap}.course-lesson-nav-title>span{font-variant-numeric:tabular-nums;white-space:nowrap}.course-directory-panel .course-lesson-group{padding-top:var(--space-sm)}.course-directory-panel .course-lesson-group h3{min-height:2.25rem;padding:var(--space-2xs) var(--space-xs);font-size:.8125rem;line-height:1.4}.course-directory-panel .course-lesson-group h3 span{width:1.5rem;height:1.5rem;flex:0 0 1.5rem}.course-directory-panel .course-lesson-group>button{min-height:2.625rem;padding:var(--space-2xs) var(--space-xs);border-radius:var(--radius-input);font-size:.8125rem;line-height:1.4}.course-directory-panel .course-lesson-group>button.active{font-weight:650}.course-directory-panel .course-lesson-index{width:1.5rem;flex-basis:1.5rem}.course-directory-panel .course-lesson-name{line-height:1.4}.course-content-nav{padding:0 0 0 var(--space-md);border:0;border-left:var(--rule-thin) solid var(--color-rule);background:transparent}.course-content-nav{overflow-x:hidden;scrollbar-width:none;-ms-overflow-style:none}.course-content-nav::-webkit-scrollbar{display:none;width:0;height:0}.course-content-nav nav,.course-content-nav nav button{min-width:0;max-width:100%}.course-content-nav nav 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var(--ease-out),color var(--dur-fast) var(--ease-out)}.course-directory-collapse:hover{background:var(--color-paper-2);color:var(--color-ink)}.course-directory-reveal{position:sticky;top:calc(var(--banner-height) + var(--space-md));display:grid;place-items:center;width:2.5rem;height:2.5rem;min-height:0;padding:0;border:0;border-radius:var(--radius-input);background:transparent;color:var(--color-muted);writing-mode:horizontal-tb;transition:background var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}.course-directory-reveal:hover{border-color:transparent;background:var(--color-paper-2);color:var(--color-accent-strong)}.course-directory-collapse[data-tooltip],.course-directory-reveal[data-tooltip]{position:relative}.course-directory-collapse[data-tooltip]:after,.course-directory-reveal[data-tooltip]:after{position:absolute;z-index:10;left:50%;bottom:calc(100% + .55rem);padding:.45rem .65rem;border-radius:var(--radius-input);background:var(--color-ink);color:var(--color-surface);content:attr(data-tooltip);font-size:var(--text-xs);line-height:1.25;white-space:nowrap;opacity:0;pointer-events:none;transform:translate(-50%,.2rem);transition:opacity var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out)}.course-directory-collapse[data-tooltip]:before,.course-directory-reveal[data-tooltip]:before{position:absolute;z-index:10;left:50%;bottom:calc(100% + .22rem);width:.55rem;height:.55rem;background:var(--color-ink);content:"";opacity:0;pointer-events:none;transform:translate(-50%) rotate(45deg);transition:opacity var(--dur-fast) var(--ease-out)}.course-directory-collapse[data-tooltip]:hover:after,.course-directory-collapse[data-tooltip]:hover:before,.course-directory-reveal[data-tooltip]:hover:after,.course-directory-reveal[data-tooltip]:hover:before{opacity:1}.course-directory-collapse[data-tooltip]:hover:after,.course-directory-reveal[data-tooltip]:hover:after{transform:translate(-50%)}.course-content-collapse{display:grid;place-items:center;width:2rem;height:2rem;margin-left:auto;padding:0;border:0;border-radius:var(--radius-input);background:transparent;color:var(--color-muted);transition:background var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}.course-content-collapse:hover{background:var(--color-paper-2);color:var(--color-ink)}.course-content-reveal{position:sticky;top:calc(var(--banner-height) + var(--space-md));display:grid;place-items:center;width:2.5rem;height:2.5rem;min-height:0;padding:0;border:0;border-radius:var(--radius-input);background:transparent;color:var(--color-muted);writing-mode:horizontal-tb;transition:background var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}.course-content-reveal:hover{border-color:transparent;background:var(--color-paper-2);color:var(--color-accent-strong)}.course-content-collapse[data-tooltip],.course-content-reveal[data-tooltip]{position:relative}.course-content-collapse[data-tooltip]:after,.course-content-reveal[data-tooltip]:after{position:absolute;z-index:10;left:50%;bottom:calc(100% + .55rem);padding:.45rem .65rem;border-radius:var(--radius-input);background:var(--color-ink);color:var(--color-surface);content:attr(data-tooltip);font-size:var(--text-xs);line-height:1.25;white-space:nowrap;opacity:0;pointer-events:none;transform:translate(-50%,.2rem);transition:opacity var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out)}.course-content-collapse[data-tooltip]:before,.course-content-reveal[data-tooltip]:before{position:absolute;z-index:10;left:50%;bottom:calc(100% + .22rem);width:.55rem;height:.55rem;background:var(--color-ink);content:"";opacity:0;pointer-events:none;transform:translate(-50%) rotate(45deg);transition:opacity var(--dur-fast) var(--ease-out)}.course-content-collapse[data-tooltip]:hover:after,.course-content-collapse[data-tooltip]:hover:before,.course-content-reveal[data-tooltip]:hover:after,.course-content-reveal[data-tooltip]:hover:before{opacity:1}.course-content-collapse[data-tooltip]:hover:after,.course-content-reveal[data-tooltip]:hover:after{transform:translate(-50%)}.course-content-collapse[data-tooltip]:after,.course-content-collapse[data-tooltip]:before{bottom:auto;top:calc(100% + .55rem)}.course-content-collapse[data-tooltip]:before{top:calc(100% + .22rem)}.course-content-reveal{align-self:start;margin-top:0}@media(max-width:980px){.course-detail-layout,.course-detail-layout.content-directory-hidden{grid-template-columns:15rem minmax(0,1fr)}.course-detail-layout.course-directory-hidden{grid-template-columns:2.4rem minmax(0,1fr)}.course-content-nav{padding:var(--space-sm);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-paper-2)}}@media(max-width:760px){.course-directory-reveal{position:relative;width:100%;height:2.5rem}.course-directory-reveal:after{bottom:calc(100% + .35rem)}}.app-shell{min-height:100vh;display:flex;flex-direction:column}.app-main{flex:1;min-height:calc(100vh - var(--banner-height))}.site-header{position:sticky;top:0;z-index:300;height:var(--banner-height);background:color-mix(in oklch,var(--color-surface) 94%,transparent);border-bottom:var(--rule-thin) solid var(--color-rule);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.header-inner{width:min(var(--layout-home-width),calc(100% - 2 * var(--layout-page-gutter)));height:100%;margin:0 auto;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:var(--space-lg)}.brand{display:inline-flex;align-items:center;gap:var(--space-xs);min-width:0;color:var(--color-ink);font-family:var(--font-display);font-weight:760;line-height:1;white-space:nowrap}.brand-mark{width:2rem;height:2rem;display:grid;place-items:center;border-radius:var(--radius-input);background:var(--color-accent-2);color:var(--color-accent-strong)}.primary-nav{justify-self:center;display:flex;align-items:center;gap:var(--space-md);min-width:0;height:100%}.primary-nav a{position:relative;min-height:100%;display:inline-flex;align-items:center;gap:var(--space-2xs);padding:0;border-radius:0;color:var(--color-muted);font-size:var(--text-sm);line-height:1;white-space:nowrap;transition:color var(--dur-short) var(--ease-out)}.login-link,.username{position:relative;min-height:2.375rem;display:inline-flex;align-items:center;gap:var(--space-2xs);padding:0 var(--space-sm);border-radius:var(--radius-input);color:var(--color-ink-2);font-size:var(--text-sm);line-height:1;white-space:nowrap}.primary-nav a:hover{color:var(--color-ink)}.login-link:hover{background:var(--color-accent-2);color:var(--color-accent-strong)}.primary-nav a:focus-visible,.login-link:focus-visible,.brand:focus-visible,.section-action:focus-visible,.row-action:focus-visible,.compact-primary:focus-visible,.attachment-download:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.primary-nav a.router-link-active{color:var(--color-accent-strong);font-weight:700}.primary-nav a.router-link-active:after{position:absolute;right:0;bottom:0;left:0;height:2px;background:var(--color-accent);content:""}.account-actions{display:flex;justify-content:flex-end;align-items:center;gap:var(--space-xs);min-width:0}.username{color:var(--color-muted)}.icon-button{width:2.375rem;height:2.375rem;display:inline-grid;place-items:center;border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-input);color:var(--color-ink-2);background:var(--color-surface);box-shadow:var(--shadow-xs);transition:background-color var(--dur-short) var(--ease-out),border-color var(--dur-short) var(--ease-out),color var(--dur-short) var(--ease-out),transform var(--dur-short) var(--ease-out),box-shadow var(--dur-short) var(--ease-out)}.icon-button:hover,.icon-button.is-hover{border-color:var(--color-accent);color:var(--color-accent-strong);background:var(--color-accent-2);transform:translateY(var(--lift-sm));box-shadow:var(--shadow-sm)}.icon-button:focus-visible,.icon-button.is-focus{outline:2px solid var(--color-focus);outline-offset:2px}.icon-button:active,.icon-button.is-active{transform:translateY(0)}.icon-button:disabled{opacity:.55;background:var(--color-paper-2);color:var(--color-muted);box-shadow:none}.home-view,.page-container{width:min(var(--layout-page-width),calc(100% - 2 * var(--layout-page-gutter)));margin:0 auto;padding:var(--space-xl) 0 var(--space-2xl)}.home-view{width:min(var(--layout-home-width),calc(100% - 2 * var(--layout-page-gutter)))}.home-start-page{display:grid;gap:var(--space-xl)}.home-start{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(20rem,.72fr);gap:clamp(var(--space-lg),4vw,var(--space-3xl));min-height:31rem;padding:clamp(var(--space-lg),4vw,var(--space-2xl));border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-lg);background:var(--color-surface);box-shadow:var(--shadow-md)}.home-start-copy{display:flex;flex-direction:column;justify-content:center;min-width:0}.home-hero{position:relative;margin-top:var(--space-md);padding:var(--space-2xl) var(--space-xl);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-lg);background-color:var(--color-surface);background-image:var(--gradient-hero);box-shadow:var(--shadow-md);overflow:hidden}.home-intro{display:grid;grid-template-columns:minmax(0,1fr) minmax(20rem,.6fr);align-items:end;gap:var(--space-xl)}.eyebrow,.section-label,.section-kicker{display:inline-flex;align-items:center;gap:var(--space-2xs);margin:0 0 var(--space-sm);color:var(--color-accent-strong);font-size:var(--text-xs);font-weight:760;letter-spacing:.06em;text-transform:uppercase}.eyebrow:before{content:"";width:1.5rem;height:2px;border-radius:2px;background:var(--gradient-accent)}h1,h2,h3,h4,p{letter-spacing:0}.home-intro h1{max-width:15ch;margin:0;color:var(--color-ink);font-family:var(--font-display);font-size:var(--text-display);line-height:1.04;overflow-wrap:anywhere;min-width:0}.home-intro h1 em{color:var(--color-accent-strong);font-style:normal}.home-start h1{max-width:10ch;margin:0;color:var(--color-ink);font-family:var(--font-display);font-size:var(--text-display);line-height:1.08;overflow-wrap:anywhere}.home-start h1 span{color:var(--color-accent-strong)}.page-heading h1,.auth-context h1{max-width:20ch;font-size:var(--text-2xl);line-height:1.12}.intro-copy{max-width:60ch;margin:var(--space-md) 0 0;color:var(--color-ink-2);font-size:var(--text-md);line-height:1.8}.project-search,.inline-search,.input-shell{min-height:3rem;display:flex;align-items:center;gap:var(--space-xs);padding-left:var(--space-sm);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-input);background:var(--color-surface);color:var(--color-muted);box-shadow:var(--shadow-xs);outline:2px solid transparent;outline-offset:1px;transition:border-color var(--dur-short) var(--ease-out),box-shadow var(--dur-short) var(--ease-out),outline-color var(--dur-short) var(--ease-out)}.project-search:hover,.inline-search:hover,.input-shell:hover{border-color:var(--color-accent);box-shadow:var(--shadow-sm)}.project-search:focus-within,.inline-search:focus-within,.input-shell:focus-within{border-color:var(--color-accent);outline-color:var(--color-focus);box-shadow:var(--shadow-sm)}.project-search input,.inline-search input,.input-shell input{min-width:0;flex:1;border:0;outline:0;color:var(--color-ink);background:transparent}.project-search button{align-self:stretch;min-width:5.5rem;margin:var(--space-3xs);border:0;border-radius:calc(var(--radius-input) - .25rem);background:var(--gradient-accent);color:var(--color-accent-ink);font-weight:760;white-space:nowrap;transition:filter var(--dur-short) var(--ease-out)}.project-search button:hover{filter:brightness(1.06)}.project-search button:focus-visible{outline:2px solid var(--color-focus);outline-offset:-2px}.home-search{width:min(100%,39rem);margin-top:var(--space-xl)}.home-quick-links{display:flex;flex-wrap:wrap;gap:var(--space-sm);margin-top:var(--space-md)}.home-quick-links a,.build-path-action,.home-section-heading>a{display:inline-flex;align-items:center;gap:var(--space-2xs);color:var(--color-accent-strong);font-size:var(--text-sm);font-weight:720;white-space:nowrap}.home-quick-links a:hover,.build-path-action:hover,.home-section-heading>a:hover{color:var(--color-ink)}.build-path{align-self:stretch;display:flex;flex-direction:column;padding:var(--space-lg);border-left:var(--rule-thin) solid var(--color-rule);background:var(--color-paper-2)}.build-path-header,.home-list-heading{display:flex;align-items:center;justify-content:space-between;gap:var(--space-xs);color:var(--color-ink-2);font-size:var(--text-sm);font-weight:760}.build-path-header svg{color:var(--color-accent-strong)}.build-path ol{display:grid;gap:var(--space-lg);margin:var(--space-xl) 0 auto;padding:0;list-style:none}.build-path li{display:grid;grid-template-columns:2rem minmax(0,1fr);gap:var(--space-sm)}.path-number{display:grid;place-items:center;width:2rem;height:2rem;border-radius:var(--radius-pill);background:var(--color-surface);color:var(--color-accent-strong);font-size:var(--text-xs);font-weight:760}.build-path strong{display:block;color:var(--color-ink);font-size:var(--text-md)}.build-path p{margin:var(--space-3xs) 0 0;color:var(--color-muted);font-size:var(--text-sm);line-height:1.6}.build-path-action{width:fit-content;margin-top:var(--space-xl)}.home-destinations{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-md)}.destination-card{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:var(--space-md);min-height:8.75rem;padding:var(--space-lg);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);transition:transform var(--dur-short) var(--ease-out),border-color var(--dur-short) var(--ease-out),box-shadow var(--dur-short) var(--ease-out)}.destination-card:hover{transform:translateY(var(--lift-sm));border-color:var(--color-accent);box-shadow:var(--shadow-md)}.destination-card:focus-visible,.home-list-item:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.destination-icon,.item-mark{display:grid;place-items:center;width:3rem;height:3rem;border-radius:var(--radius-input);background:var(--color-accent-2);color:var(--color-accent-strong)}.destination-card--courses .destination-icon,.item-mark--warm{background:var(--color-warm-2);color:var(--color-warm-ink)}.destination-copy{display:grid;gap:var(--space-3xs);min-width:0}.destination-copy small{color:var(--color-muted);font-size:var(--text-xs);font-weight:760;letter-spacing:.06em}.destination-copy strong{color:var(--color-ink);font-size:var(--text-lg)}.destination-copy em{color:var(--color-muted);font-size:var(--text-sm);font-style:normal;line-height:1.5}.destination-card>svg{color:var(--color-muted)}.home-library{padding-top:var(--space-xl);border-top:var(--rule-thin) solid var(--color-rule)}.home-section-heading{display:flex;align-items:end;justify-content:space-between;gap:var(--space-md)}.home-section-heading h2{margin:0;font-size:var(--text-xl)}.home-section-heading .section-kicker{margin-bottom:var(--space-2xs)}.home-library-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-xl);margin-top:var(--space-lg)}.home-list-panel{min-width:0}.home-list-heading{justify-content:flex-start;padding-bottom:var(--space-sm);border-bottom:var(--rule-thin) solid var(--color-rule)}.home-list-heading h3{margin:0;font-size:var(--text-md)}.home-list-item{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:var(--space-sm);padding:var(--space-sm) 0;border-bottom:var(--rule-thin) solid var(--color-rule);transition:color var(--dur-short) var(--ease-out)}.home-list-item:hover strong{color:var(--color-accent-strong)}.home-list-item .item-mark{width:2.25rem;height:2.25rem}.home-list-item>span:nth-child(2){min-width:0}.home-list-item strong,.home-list-item small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.home-list-item strong{color:var(--color-ink);font-size:var(--text-sm)}.home-list-item small{margin-top:var(--space-3xs);color:var(--color-muted);font-size:var(--text-xs)}.home-list-item>svg{color:var(--color-muted)}.home-list-empty,.home-loading{display:flex;align-items:center;gap:var(--space-xs);min-height:7rem;margin:0;color:var(--color-muted);font-size:var(--text-sm)}.home-loading{justify-content:center;margin-top:var(--space-lg);border:var(--rule-thin) solid var(--color-rule);background:var(--color-paper-2)}.home-platform-page{display:grid;gap:var(--space-3xl);padding-top:var(--space-lg)}.home-carousel{position:relative;overflow:hidden;min-height:28rem;padding:clamp(var(--space-xl),4vw,var(--space-2xl)) clamp(var(--space-xl),5vw,var(--space-3xl));border-radius:var(--radius-lg);background-color:var(--color-paper-2);background-image:linear-gradient(color-mix(in oklch,var(--color-surface) 18%,transparent),color-mix(in oklch,var(--color-surface) 18%,transparent)),url(/images/maker-workbench-banner.png);background-position:center;background-size:cover;box-shadow:var(--shadow-sm)}.carousel-slide{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.92fr);width:100%;height:30rem;min-height:0;overflow:hidden;padding:0;border:var(--rule-thin) solid color-mix(in oklch,var(--color-surface) 70%,transparent);border-radius:var(--radius-lg);background:color-mix(in oklch,var(--color-surface) 90%,transparent);color:var(--color-ink);text-align:left;box-shadow:var(--shadow-md);-webkit-backdrop-filter:blur(12px) saturate(1.08);backdrop-filter:blur(12px) saturate(1.08)}.carousel-art{position:relative;display:grid;place-items:center;height:calc(30rem - 2 * var(--space-lg));min-height:0;margin:var(--space-lg);overflow:hidden;border-radius:var(--radius-card);background:var(--color-accent-2);color:var(--color-accent-strong)}.carousel-art--image,.featured-cover--image{background:var(--color-paper-3)}.carousel-art img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.featured-cover img{width:100%;height:100%;object-fit:cover}.carousel-copy{align-self:center;min-width:0;padding:var(--space-xl) clamp(var(--space-lg),4vw,var(--space-2xl))}.carousel-copy p{margin:0 0 var(--space-sm);color:var(--color-accent-strong);font-size:var(--text-sm);font-weight:760}.carousel-copy h1{max-width:12ch;margin:0;font-size:clamp(var(--text-2xl),3vw,3.25rem);line-height:1.12;overflow-wrap:anywhere}.carousel-copy>span{display:-webkit-box;overflow:hidden;max-width:40ch;margin-top:var(--space-md);color:var(--color-muted);line-height:1.75;-webkit-box-orient:vertical;-webkit-line-clamp:4}.carousel-copy strong,.featured-card strong{display:inline-flex;align-items:center;gap:var(--space-2xs);margin-top:var(--space-lg);color:var(--color-accent-strong);font-size:var(--text-sm)}.carousel-control{position:absolute;z-index:2;top:50%;display:grid;place-items:center;width:2.75rem;height:2.75rem;padding:0;border:0;border-radius:var(--radius-pill);background:color-mix(in oklch,var(--color-surface) 84%,transparent);color:var(--color-ink-2);transform:translateY(-50%);box-shadow:var(--shadow-xs);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.carousel-control:hover{color:var(--color-accent-strong);background:var(--color-surface)}.carousel-control:focus-visible,.carousel-dots button:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.carousel-control--previous{left:var(--space-md)}.carousel-control--next{right:var(--space-md)}.carousel-dots{position:absolute;z-index:2;right:var(--space-xl);bottom:var(--space-md);display:flex;gap:var(--space-2xs)}.carousel-dots button{width:.55rem;height:.55rem;padding:0;border:0;border-radius:var(--radius-pill);background:var(--color-rule-strong)}.carousel-dots button.active{width:1.5rem;background:var(--color-accent)}.home-featured{padding-top:var(--space-2xl);border-top:var(--rule-thin) solid var(--color-rule)}.platform-section-heading{display:flex;align-items:end;justify-content:space-between;gap:var(--space-md)}.platform-section-heading .section-kicker{margin-bottom:var(--space-2xs)}.platform-section-heading h2{margin:0;font-size:var(--text-2xl)}.platform-section-heading span{display:block;margin-top:var(--space-xs);color:var(--color-muted);line-height:1.7}.platform-section-heading>a{display:inline-flex;align-items:center;gap:var(--space-2xs);color:var(--color-accent-strong);font-size:var(--text-sm);font-weight:760;white-space:nowrap}.featured-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--space-md);margin-top:var(--space-xl)}.featured-card{overflow:hidden;border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-xs);transition:transform var(--dur-short) var(--ease-out),box-shadow var(--dur-short) var(--ease-out),border-color var(--dur-short) var(--ease-out)}.featured-card:hover{transform:translateY(var(--lift-sm));border-color:var(--color-accent);box-shadow:var(--shadow-md)}.featured-card:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.featured-cover{position:relative;display:grid;place-items:center;aspect-ratio:16 / 9;overflow:hidden;background:var(--color-accent-2);color:var(--color-accent-strong)}.featured-cover--course{background:var(--color-warm-2);color:var(--color-warm-ink)}.featured-cover span{position:absolute;right:var(--space-xs);top:var(--space-xs);padding:var(--space-3xs) var(--space-xs);border-radius:var(--radius-pill);background:var(--color-surface);color:var(--color-ink-2);font-size:var(--text-xs);font-weight:700}.featured-card>div:last-child{padding:var(--space-md)}.featured-card h3{margin:0;color:var(--color-ink);font-size:var(--text-lg);line-height:1.35}.featured-card p{display:-webkit-box;overflow:hidden;margin:var(--space-xs) 0 0;color:var(--color-muted);font-size:var(--text-sm);line-height:1.65;-webkit-box-orient:vertical;-webkit-line-clamp:2}.featured-card strong{margin-top:var(--space-md)}.home-empty{margin:var(--space-xl) 0 0;color:var(--color-muted)}.home-about{display:grid;grid-template-columns:auto minmax(0,1fr);gap:var(--space-lg);padding:clamp(var(--space-lg),4vw,var(--space-2xl));border-radius:var(--radius-lg);background:var(--color-paper-2)}.home-about-mark{display:grid;place-items:center;width:3.5rem;height:3.5rem;border-radius:var(--radius-input);background:var(--color-warm-2);color:var(--color-warm-ink)}.home-about .section-kicker{margin-bottom:var(--space-2xs)}.home-about h2{margin:0;font-size:var(--text-2xl)}.home-about p{max-width:60ch;margin:var(--space-md) 0 0;color:var(--color-ink-2);font-size:var(--text-lg);line-height:1.7}.home-about>div:last-child>span{display:block;max-width:65ch;margin-top:var(--space-xs);color:var(--color-muted);line-height:1.75}.about-search{width:min(100%,34rem);margin-top:var(--space-lg)}.platform-section-heading h2{font-size:var(--text-xl)}.platform-section-heading span{max-width:52ch}.featured-grid{align-items:stretch}.featured-card{height:100%;min-width:0;display:flex;flex-direction:column;border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-xs);transition:border-color var(--dur-short) var(--ease-out),box-shadow var(--dur-short) var(--ease-out),transform var(--dur-short) var(--ease-out)}.featured-card:hover{border-color:var(--color-accent);box-shadow:var(--shadow-sm);transform:translateY(var(--lift-sm))}.featured-cover{flex:0 0 auto;border-radius:0}.featured-card>div:last-child{flex:1;min-width:0;display:flex;flex-direction:column;padding:var(--space-md)}.featured-card strong{display:inline-flex;align-items:center;gap:var(--space-3xs);margin-top:auto;padding-top:var(--space-md);color:var(--color-accent-strong);font-size:var(--text-sm)}.project-showcase,.project-showcase--count-1,.project-showcase--count-2{grid-template-columns:repeat(3,minmax(0,1fr));grid-template-rows:auto}.project-showcase .featured-card--lead{grid-row:auto}.project-showcase .featured-card:not(.featured-card--lead){display:flex}.project-showcase .featured-card:not(.featured-card--lead) .featured-cover{aspect-ratio:16 / 9}.home-about{border-top:var(--rule-thin) solid var(--color-rule);border-radius:0;background:transparent}.path-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:var(--space-md);margin-top:var(--space-lg)}.content-section{position:relative;min-height:16rem;display:flex;flex-direction:column;justify-content:space-between;padding:var(--space-lg);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-sm);overflow:hidden;transition:transform var(--dur-md) var(--ease-out),box-shadow var(--dur-md) var(--ease-out),border-color var(--dur-md) var(--ease-out)}.content-section:before{content:"";position:absolute;inset:0 0 auto;height:4px;background:var(--gradient-accent);transform:scaleX(0);transform-origin:left;transition:transform var(--dur-md) var(--ease-out)}.content-section:hover{transform:translateY(var(--lift-md));box-shadow:var(--shadow-lg);border-color:var(--color-accent-3)}.content-section:hover:before{transform:scaleX(1)}.content-section--courses:before{background:var(--gradient-warm)}.content-section--courses .section-label{color:var(--color-warm-ink)}.section-visual{width:3rem;height:3rem;display:grid;place-items:center;margin-bottom:var(--space-sm);border-radius:var(--radius-input);background:var(--color-accent-2);color:var(--color-accent-strong);transition:transform var(--dur-short) var(--ease-spring)}.content-section--courses .section-visual{background:var(--color-warm-2);color:var(--color-warm-ink)}.content-section:hover .section-visual{transform:scale(1.08) rotate(-4deg)}.section-copy h2{margin:0;color:var(--color-ink);font-size:var(--text-xl);line-height:1.18}.section-copy>p:last-child{max-width:40ch;margin:var(--space-xs) 0 0;color:var(--color-muted);line-height:1.75}.section-action{width:fit-content;margin-top:var(--space-md);display:inline-flex;align-items:center;gap:var(--space-2xs);color:var(--color-accent-strong);font-weight:760;line-height:1;white-space:nowrap;transition:gap var(--dur-short) var(--ease-out)}.content-section:hover .section-action{gap:var(--space-xs)}.focus-strip{margin-top:var(--space-md);display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-md);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-paper-2);color:var(--color-ink-2);box-shadow:var(--shadow-xs)}.focus-strip>svg{flex-shrink:0;color:var(--color-warm)}.focus-strip div{display:flex;align-items:baseline;gap:var(--space-xs);flex-wrap:wrap}.focus-strip span{color:var(--color-muted);font-size:var(--text-sm)}.page-heading{min-height:7rem;display:flex;justify-content:space-between;align-items:end;gap:var(--space-lg);padding-bottom:var(--space-md);border-bottom:var(--rule-thin) solid var(--color-rule)}.page-heading p:not(.eyebrow){max-width:65ch;margin:var(--space-2xs) 0 0;color:var(--color-muted);line-height:1.7}.inline-search{width:min(24rem,100%)}.project-list{margin-top:var(--space-md);display:grid;gap:var(--space-sm)}.project-row{position:relative;display:grid;grid-template-columns:3.75rem minmax(0,1fr) auto;align-items:center;gap:var(--space-md);min-height:6.5rem;padding:var(--space-md) var(--space-lg);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-xs);transition:transform var(--dur-short) var(--ease-out),box-shadow var(--dur-short) var(--ease-out),border-color var(--dur-short) var(--ease-out)}.project-row:hover{transform:translateY(var(--lift-sm));box-shadow:var(--shadow-md);border-color:var(--color-accent-3)}.project-row:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.project-visual{width:3.25rem;height:3.25rem;display:grid;place-items:center;border-radius:var(--radius-input);background:var(--color-accent-2);color:var(--color-accent-strong);transition:transform var(--dur-short) var(--ease-spring)}.project-row:hover .project-visual{transform:scale(1.06) rotate(-4deg)}.project-title-line{display:flex;align-items:center;gap:var(--space-xs);flex-wrap:wrap}.project-title-line h2{margin:0;color:var(--color-ink);font-size:var(--text-lg);line-height:1.25}.project-title-line span{padding:var(--space-3xs) var(--space-xs);border-radius:var(--radius-pill);color:var(--color-accent-strong);background:var(--color-accent-2);font-size:var(--text-xs);font-weight:700;line-height:1.4}.project-copy p{max-width:72ch;margin:var(--space-2xs) 0 0;color:var(--color-muted);line-height:1.65}.row-action{display:inline-flex;align-items:center;justify-content:flex-end;gap:var(--space-2xs);color:var(--color-accent-strong);font-size:var(--text-sm);font-weight:760;line-height:1;white-space:nowrap;transition:gap var(--dur-short) var(--ease-out)}.project-row:hover .row-action{gap:var(--space-xs)}.project-card-grid{grid-template-columns:repeat(3,minmax(280px,1fr));gap:1.5rem}.catalog-layout{display:grid;grid-template-columns:10.5rem minmax(0,1fr);gap:var(--space-xl);align-items:start}.catalog-layout--flat{display:block}.courses-layout.catalog-layout--flat{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:var(--space-sm) var(--space-lg);padding-top:var(--space-md);border-top:var(--rule-thin) solid var(--color-rule)}.catalog-tabs{display:flex;gap:.35rem;overflow-x:auto;padding:.25rem 0 .75rem;border-bottom:1px solid var(--color-rule)}.courses-layout .catalog-tabs{min-width:0;padding:0;border:0}.catalog-tabs button,.catalog-sort button{flex:0 0 auto;min-height:2.25rem;padding:0 .9rem;border:0;border-radius:999px;background:transparent;color:var(--color-muted);font-size:var(--text-sm);cursor:pointer;white-space:nowrap}.catalog-tabs button:hover,.catalog-tabs button.active,.catalog-sort .sort-active{background:var(--color-accent-2);color:var(--color-accent-strong);font-weight:700}.catalog-sort{display:flex;align-items:center;justify-content:flex-end;gap:.25rem;padding:.75rem 0 1rem;color:var(--color-muted);font-size:var(--text-sm)}.catalog-sort span{margin-right:auto}.courses-layout .catalog-sort{padding:0}.courses-layout .catalog-sort span{display:none}.courses-layout .course-results{grid-column:1 / -1}.courses-layout .course-results-heading{display:flex;align-items:center;min-height:2.25rem;margin-top:var(--space-xs)}.courses-layout .course-results-heading h2{margin:0;font-size:var(--text-xl)}.catalog-sidebar{position:sticky;top:var(--space-lg);display:grid;align-content:start;gap:.2rem;padding-top:.35rem}.catalog-sidebar .section-kicker{margin:0 0 var(--space-xs)}.catalog-sidebar button{min-height:2.5rem;padding:0 var(--space-sm);border:0;border-radius:var(--radius-input);background:transparent;color:var(--color-muted);text-align:left;font-size:var(--text-sm);cursor:pointer}.catalog-sidebar button:hover,.catalog-sidebar button.active{background:var(--color-accent-2);color:var(--color-accent-strong);font-weight:700}.project-card{display:block;min-height:0;padding:0;overflow:hidden;border-radius:16px}.project-card .project-visual{position:relative;isolation:isolate;z-index:0;overflow:hidden;width:100%;aspect-ratio:1.84 / 1;height:auto;border-radius:0;background:var(--color-accent-2);transform:none}.project-card:hover .project-visual{z-index:2;width:100%;aspect-ratio:1.84 / 1;height:auto;transform:none}.project-card .project-visual img{position:absolute;z-index:1;inset:0;width:100%;height:100%;display:block;object-fit:cover;opacity:1;visibility:visible}.card-cover-tag{position:absolute;z-index:3;left:var(--space-sm);top:var(--space-sm);padding:var(--space-3xs) var(--space-xs);border-radius:var(--radius-pill);background:color-mix(in oklch,var(--color-ink) 78%,transparent);color:var(--color-accent-ink);font-size:var(--text-xs);font-weight:700}.project-card .project-visual--image{background:var(--color-paper-2)}.project-card .project-copy{position:relative;z-index:1;min-height:13rem;padding:1.15rem 1.35rem 1.25rem;background:var(--color-surface)}.project-card .project-title-line{margin-bottom:var(--space-xs)}.project-card .project-title-line span{color:var(--color-accent-strong);font-size:var(--text-sm)}.project-card .project-copy h2{margin:0;font-size:var(--text-lg);line-height:1.35}.project-card .project-copy p{min-height:3.3rem;margin:var(--space-xs) 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.project-card-meta{display:flex;gap:var(--space-md);margin-top:var(--space-md);color:var(--color-muted);font-size:var(--text-xs)}.project-card-meta span{display:inline-flex;align-items:center;gap:var(--space-3xs)}.project-card .row-action{margin-top:var(--space-md);justify-content:flex-start}.card-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:var(--space-sm);color:var(--color-ink-2);font-size:var(--text-md)}.card-bottom .row-action{margin-top:0;color:var(--color-accent-strong)}.empty-state{margin-top:var(--space-md);min-height:8.75rem;display:grid;place-items:center;gap:var(--space-xs);padding:var(--space-lg);border:var(--rule-thin) dashed var(--color-rule);border-radius:var(--radius-card);color:var(--color-muted);background:var(--color-paper-2);text-align:center;animation:fade-in var(--dur-md) var(--ease-out) both}.error-state button{min-height:2.5rem;padding:0 var(--space-md);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-input);background:var(--color-surface);color:var(--color-accent-strong);font-weight:700;white-space:nowrap;box-shadow:var(--shadow-xs);transition:background-color var(--dur-short) var(--ease-out),transform var(--dur-short) var(--ease-out)}.error-state button:hover{background:var(--color-accent-2);transform:translateY(var(--lift-sm))}.empty-state--large{min-height:16rem;align-content:center}.empty-state--large svg{color:var(--color-accent)}.empty-state--large strong{color:var(--color-ink-2);font-size:var(--text-md)}.courses-hero{display:flex;justify-content:space-between;align-items:end;gap:var(--space-lg);padding:var(--space-lg) 0 var(--space-md);border-bottom:0}.courses-hero h1{max-width:22ch;margin:0;font-family:var(--font-display);font-size:var(--text-2xl);line-height:1.12}.courses-hero-copy{margin:var(--space-sm) 0 0;color:var(--color-muted);line-height:1.7}.courses-hero-stat{display:flex;align-items:center;gap:var(--space-xs);padding:var(--space-sm) var(--space-md);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-paper-2);color:var(--color-muted);white-space:nowrap}.courses-hero-stat svg{color:var(--color-accent-strong)}.courses-hero-stat strong{color:var(--color-ink);font-size:var(--text-lg)}.course-toolbar{display:flex;align-items:center;justify-content:space-between;gap:var(--space-md);padding:var(--space-xs) 0 var(--space-md);border-bottom:0}.course-search{width:min(24rem,100%);min-height:2.75rem;display:flex;align-items:center;gap:var(--space-xs);padding:0 var(--space-sm);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-input);background:var(--color-surface);color:var(--color-muted)}.course-search:focus-within{border-color:var(--color-accent);box-shadow:var(--shadow-sm)}.course-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;color:var(--color-ink)}.course-categories{display:flex;gap:var(--space-2xs);overflow-x:auto}.course-categories button{min-height:2.35rem;padding:0 var(--space-sm);border:0;border-radius:var(--radius-pill);background:transparent;color:var(--color-muted);white-space:nowrap}.course-categories button:hover,.course-categories button.active{background:var(--color-accent-2);color:var(--color-accent-strong);font-weight:700}.courses-layout{grid-template-columns:10.5rem minmax(0,1fr);padding-top:var(--space-lg)}.course-results-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:var(--space-md)}.course-results-heading h2{margin:0;font-size:var(--text-xl)}.course-results-heading>span{color:var(--color-muted);font-size:var(--text-sm)}.course-grid{display:grid;grid-template-columns:repeat(3,minmax(280px,1fr));gap:1.5rem}.course-card{overflow:hidden;border:1px solid #d7e0e8;border-radius:16px;background:var(--color-surface);box-shadow:0 3px 12px #26374814;transition:transform var(--dur-short) var(--ease-out),box-shadow var(--dur-short) var(--ease-out)}.course-card:hover{transform:translateY(var(--lift-sm));box-shadow:var(--shadow-md)}.course-cover{aspect-ratio:1.84 / 1;height:auto;display:flex;align-items:flex-start;justify-content:space-between;padding:var(--space-md);color:#fff;font-size:var(--text-sm)}.course-cover span{padding:.25rem .5rem;border-radius:var(--radius-pill);background:color-mix(in srgb,#fff 22%,transparent)}.course-cover--mint{background:#2d9d83}.course-cover--blue{background:#3f70d8}.course-cover--orange{background:#d97932}.course-cover--purple{background:#8062b3}.course-cover--cyan{background:#278fa4}.course-cover--red{background:#c75a60}.course-cover--image{position:relative;overflow:hidden;padding:0}.course-cover--image img{position:absolute;inset:0;display:block;width:100%;height:100%;object-fit:cover}.course-card-body{padding:var(--space-md)}.course-card-meta,.course-card-footer{display:flex;justify-content:space-between;gap:var(--space-xs);color:var(--color-muted);font-size:var(--text-xs)}.course-card-meta span:first-child{color:var(--color-accent-strong)}.course-card h3{margin:var(--space-sm) 0 var(--space-2xs);font-size:var(--text-md);line-height:1.35}.course-card p{min-height:3.2em;margin:0;color:var(--color-muted);font-size:var(--text-sm);line-height:1.65}.course-card-footer{justify-content:flex-start;margin-top:var(--space-md)}.course-card-footer span{display:inline-flex;align-items:center;gap:.3rem}.course-card-link{display:inline-flex;align-items:center;gap:.35rem;margin-top:var(--space-md);padding:0;border:0;background:transparent;color:var(--color-accent-strong);font-size:var(--text-sm);font-weight:700}.course-aside{display:grid;align-content:start;gap:var(--space-md)}.course-aside-panel{padding:var(--space-md);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-xs)}.course-aside-panel--featured{background:var(--color-paper-2)}.course-aside-panel h2{margin:0;font-size:var(--text-lg);line-height:1.35}.course-aside-panel p:not(.section-kicker){margin:var(--space-sm) 0 0;color:var(--color-muted);font-size:var(--text-sm);line-height:1.7}.course-aside-facts{display:grid;gap:var(--space-xs);margin:var(--space-md) 0;color:var(--color-muted);font-size:var(--text-xs)}.course-aside-facts span{display:flex;align-items:center;gap:.35rem}.course-aside-panel .primary-button{width:100%}.course-benefits{display:grid;gap:var(--space-md);margin:0;padding:0;list-style:none}.course-benefits li{display:flex;gap:var(--space-xs)}.course-benefit-icon{flex:0 0 2rem;height:2rem;display:grid;place-items:center;border-radius:var(--radius-input);background:var(--color-accent-2);color:var(--color-accent-strong)}.course-benefits strong,.course-benefits small{display:block}.course-benefits strong{font-size:var(--text-sm)}.course-benefits small{margin-top:.2rem;color:var(--color-muted);font-size:var(--text-xs)}@media(max-width:1100px){.course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:900px){.catalog-layout,.courses-layout{grid-template-columns:minmax(0,1fr)}.catalog-sidebar{position:static;display:flex;overflow-x:auto;gap:.25rem;padding:0}.catalog-sidebar .section-kicker{display:none}.catalog-sidebar button{white-space:nowrap}}@media(max-width:760px){.courses-hero,.course-toolbar{display:grid;grid-template-columns:minmax(0,1fr);align-items:start}.courses-layout.catalog-layout--flat{grid-template-columns:minmax(0,1fr);gap:var(--space-sm)}.courses-layout .catalog-sort{justify-content:flex-start;overflow-x:auto;padding-bottom:var(--space-2xs)}.courses-layout .course-results{grid-column:auto}.course-categories{width:100%}.course-grid,.course-aside{grid-template-columns:minmax(0,1fr)}.course-aside-panel--featured{grid-row:auto}}.course-card-body{min-height:0;aspect-ratio:2.65 / 1;padding:16px;display:flex;flex-direction:column}.course-card h3{margin:0;color:var(--color-ink);font-size:var(--text-lg);font-weight:760}.course-card-meta-text{margin:var(--space-2xs) 0 0!important;min-height:0!important;color:var(--color-muted)!important;font-size:var(--text-xs)!important;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.course-card-summary{margin:var(--space-2xs) 0 0!important;min-height:2.8em!important;color:var(--color-muted)!important;font-size:var(--text-sm)!important;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.course-card-footer{margin-top:auto!important;align-items:center;justify-content:space-between!important}.course-card-footer strong{color:var(--color-ink-2);font-size:var(--text-md)}.course-card-link{min-width:5.5rem;height:2.375rem;justify-content:center;margin-top:0!important;padding:0 var(--space-sm);border-radius:var(--radius-pill);background:var(--color-accent);color:var(--color-accent-ink);font-size:var(--text-sm)}.course-card-link:hover{background:var(--color-accent-strong)}.course-card-link:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.catalog-page{padding-top:var(--space-lg)}.catalog-page-heading{min-height:8.5rem;display:flex;align-items:end;justify-content:space-between;gap:var(--space-xl);padding:var(--space-lg) 0;border-bottom:var(--rule-thin) solid var(--color-rule)}.catalog-page-heading>div:first-child{min-width:0}.catalog-page-heading h1{max-width:24ch;margin:0;color:var(--color-ink);font-family:var(--font-display);font-size:var(--text-2xl);line-height:1.2;overflow-wrap:anywhere}.catalog-page-heading p{max-width:52ch;margin:var(--space-xs) 0 0;color:var(--color-muted);line-height:1.7}.catalog-heading-meta{flex:0 0 auto;display:flex;align-items:center;gap:var(--space-xs);padding-bottom:var(--space-2xs);color:var(--color-muted);font-size:var(--text-sm);white-space:nowrap}.catalog-heading-meta svg{color:var(--color-warm-ink)}.catalog-heading-meta strong{color:var(--color-ink);font-size:var(--text-lg);font-variant-numeric:tabular-nums}.catalog-search-row{padding:var(--space-md) 0 0}.catalog-search{width:min(22rem,100%);min-height:2.75rem;display:flex;align-items:center;gap:var(--space-xs);padding:0 var(--space-sm);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-input);background:var(--color-surface);color:var(--color-muted);outline:2px solid transparent;outline-offset:1px;transition:border-color var(--dur-short) var(--ease-out),outline-color var(--dur-short) var(--ease-out)}.catalog-page-heading .catalog-search{flex:0 1 22rem}.catalog-search:hover{border-color:var(--color-rule-strong)}.catalog-search:focus-within{border-color:var(--color-accent);outline-color:var(--color-focus)}.catalog-search input{min-width:0;flex:1;border:0;outline:0;background:transparent;color:var(--color-ink);font:inherit}.catalog-controls{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:var(--space-lg);padding-top:var(--space-md)}.catalog-tabs{min-width:0;padding:0;border:0;scrollbar-width:none}.catalog-tabs::-webkit-scrollbar,.catalog-sort::-webkit-scrollbar{display:none}.catalog-tabs button,.catalog-sort button{border-radius:var(--radius-input)}.catalog-tabs button:focus-visible,.catalog-sort button:focus-visible{outline:2px solid var(--color-focus);outline-offset:1px}.catalog-tabs button.active{background:transparent;color:var(--color-accent-strong);box-shadow:inset 0 -2px 0 var(--color-accent)}.catalog-sort{min-width:0;padding:0}.catalog-sort span,.catalog-count{color:var(--color-muted);font-size:var(--text-sm);font-variant-numeric:tabular-nums;white-space:nowrap}.catalog-sort button{min-height:2rem;padding:0 var(--space-xs);font-size:var(--text-xs)}.catalog-sort .sort-active{background:var(--color-accent-2)}.project-card-grid,.course-grid{grid-template-columns:repeat(3,minmax(0,1fr));align-items:stretch;gap:var(--space-lg);margin-top:var(--space-lg)}.project-card,.course-card{height:100%;min-width:0;display:flex;flex-direction:column;align-items:stretch;overflow:hidden;border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-xs);transition:border-color var(--dur-short) var(--ease-out),box-shadow var(--dur-short) var(--ease-out),transform var(--dur-short) var(--ease-out)}.project-card:hover,.course-card:hover{border-color:var(--color-accent);box-shadow:var(--shadow-sm);transform:translateY(var(--lift-sm))}.project-card .project-visual,.project-card:hover .project-visual,.course-cover{flex:0 0 auto;overflow:hidden;aspect-ratio:16 / 9;border-radius:0;background:var(--color-accent-2);color:var(--color-accent-strong)}.course-cover{position:relative;align-items:center;justify-content:center;padding:0}.course-cover--warm{background:var(--color-warm-2);color:var(--color-warm-ink)}.course-cover .card-cover-tag{right:var(--space-xs);left:auto;top:var(--space-xs);background:color-mix(in oklch,var(--color-surface) 92%,transparent);color:var(--color-ink-2)}.project-card .project-copy,.course-card-body{flex:1;min-height:0;display:flex;flex-direction:column;padding:var(--space-md);background:var(--color-surface)}.project-card .project-copy p,.course-card-summary{min-height:0!important}.project-card-meta{flex-wrap:wrap;gap:var(--space-xs) var(--space-md);margin-top:var(--space-sm)}.card-bottom{margin-top:auto;padding-top:var(--space-md);border-top:0;font-size:var(--text-sm)}.course-card-body{aspect-ratio:auto}.course-card-footer{margin-top:auto!important;padding-top:var(--space-md);border-top:0}.course-card-footer strong{font-size:var(--text-sm)}.course-card-link{min-width:0;height:auto;padding:0;border-radius:0;background:transparent;color:var(--color-accent-strong)}.course-card-link:hover{background:transparent;color:var(--color-ink)}.courses-layout.catalog-layout--flat{grid-template-columns:minmax(0,1fr) auto;gap:var(--space-sm) var(--space-lg);margin-top:var(--space-md);padding-top:var(--space-md)}.courses-layout .catalog-count{justify-self:end}.courses-layout .course-results-heading{min-height:0;margin:var(--space-md) 0 0}.courses-layout .course-results-heading h2{font-size:var(--text-lg)}@media(max-width:1100px){.project-card-grid,.course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:760px){.catalog-page{padding-top:var(--space-sm)}.catalog-page-heading{min-height:0;display:grid;grid-template-columns:minmax(0,1fr);align-items:start;gap:var(--space-md);padding:var(--space-md)}.catalog-page-heading .catalog-search{width:100%}.catalog-heading-meta{padding:0}.catalog-search-row{padding:var(--space-md)}.catalog-search-row .catalog-search{width:100%}.catalog-controls{grid-template-columns:minmax(0,1fr);gap:var(--space-xs);padding:var(--space-md)}.catalog-tabs,.catalog-sort{overflow-x:auto}.catalog-sort{justify-content:flex-start}.courses-layout.catalog-layout--flat{margin-top:0;padding:var(--space-md)}.courses-layout .catalog-count{justify-self:start}.project-card-grid,.course-grid{margin-top:var(--space-md)}}@media(max-width:420px){.project-card-grid,.course-grid{grid-template-columns:minmax(0,1fr);gap:var(--space-md)}}.course-detail-layout{grid-template-areas:"course content outline";grid-template-columns:16rem minmax(0,1fr) 11rem;gap:clamp(var(--space-lg),3vw,var(--space-2xl));align-items:start}.course-detail-layout.course-directory-hidden{grid-template-areas:"course content outline";grid-template-columns:2.5rem minmax(0,1fr) 11rem}.course-detail-layout.content-directory-hidden{grid-template-areas:"course content outline";grid-template-columns:16rem minmax(0,1fr) 2.5rem}.course-detail-layout.course-directory-hidden.content-directory-hidden{grid-template-areas:"course content outline";grid-template-columns:2.5rem minmax(0,1fr) 2.5rem}.course-directory-panel,.course-directory-reveal{grid-area:course}.course-content-nav,.course-content-reveal{grid-area:outline}.course-lesson-content{grid-area:content;justify-self:center;width:100%;max-width:52rem;padding:var(--space-sm) 0 var(--space-2xl);scroll-margin-top:calc(var(--banner-height) + var(--space-md))}.course-document-heading{display:grid;grid-template-columns:minmax(0,1fr) 7rem;align-items:end;gap:var(--space-xl);padding-bottom:var(--space-lg);border-bottom:var(--rule-thin) solid var(--color-rule)}.course-document-heading>div:first-child{min-width:0}.course-document-heading h2{max-width:28ch;overflow-wrap:anywhere}.course-document-meta{display:flex;align-items:center;gap:var(--space-2xs);margin:var(--space-xs) 0 0;color:var(--color-muted);font-size:var(--text-xs);line-height:1.5}.course-reading-progress{display:grid;gap:var(--space-xs);color:var(--color-muted);font-size:var(--text-xs);font-variant-numeric:tabular-nums;text-align:right}.course-reading-progress>div{height:.25rem;overflow:hidden;border-radius:var(--radius-pill);background:var(--color-rule)}.course-reading-progress i{display:block;height:100%;border-radius:inherit;background:var(--color-accent)}.course-subsection-content{margin-top:var(--space-xl)}.course-lesson-actions{min-height:4rem;padding-top:var(--space-md);border-top:var(--rule-thin) solid var(--color-rule)}.course-lesson-actions button{white-space:nowrap}.course-lesson-actions button:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.course-lesson-actions button:active{transform:translateY(0)}.course-directory-panel,.course-content-nav{overscroll-behavior:contain}.course-content-nav nav button:focus-visible,.course-lesson-nav button:focus-visible,.course-directory-reveal:focus-visible,.course-content-reveal:focus-visible{outline:2px solid var(--color-focus);outline-offset:1px}.course-content-nav nav button:active,.course-lesson-nav button:active{background:var(--color-paper-3)}.detail-heading{display:grid;gap:var(--space-2xs)}.detail-heading .eyebrow{width:fit-content;margin-bottom:var(--space-2xs)}.login-gate{margin-top:var(--space-lg)}@media(max-width:980px){.course-detail-layout,.course-detail-layout.content-directory-hidden{grid-template-areas:"course content" "course outline";grid-template-columns:14rem minmax(0,1fr)}.course-detail-layout.course-directory-hidden,.course-detail-layout.course-directory-hidden.content-directory-hidden{grid-template-areas:"course content" "course outline";grid-template-columns:2.5rem minmax(0,1fr)}.course-content-nav,.course-content-reveal{grid-column:2;position:relative;top:auto;width:100%;max-height:none;margin-top:var(--space-lg)}.course-content-nav nav{columns:2;column-gap:var(--space-lg)}.course-content-nav nav button{break-inside:avoid}}@media(max-width:760px){.course-detail-layout,.course-detail-layout.content-directory-hidden,.course-detail-layout.course-directory-hidden,.course-detail-layout.course-directory-hidden.content-directory-hidden{grid-template-areas:"course" "outline" "content";grid-template-columns:minmax(0,1fr);gap:var(--space-md)}.course-directory-panel,.course-directory-reveal,.course-content-nav,.course-content-reveal{grid-column:1;width:100%;margin:0}.course-directory-panel{padding:var(--space-md)}.course-directory-panel .course-lesson-group{display:flex;align-items:center;gap:var(--space-2xs);overflow-x:auto;padding-block:var(--space-xs);scrollbar-width:none}.course-directory-panel .course-lesson-group::-webkit-scrollbar{display:none}.course-directory-panel .course-lesson-group h3,.course-directory-panel .course-lesson-group>button{flex:0 0 auto;white-space:nowrap}.course-content-nav{padding:var(--space-sm) var(--space-md)}.course-content-nav nav{display:flex;gap:var(--space-2xs);overflow-x:auto;columns:auto;padding-bottom:var(--space-2xs);scrollbar-width:none}.course-content-nav nav::-webkit-scrollbar{display:none}.course-content-nav nav button{flex:0 0 auto;min-height:2.25rem;padding:0 var(--space-sm);border-left:0;border-radius:var(--radius-input);white-space:nowrap}.course-content-nav nav .level-2,.course-content-nav nav .level-3,.course-content-nav nav .level-4,.course-content-nav nav .level-5,.course-content-nav nav .level-6{padding-left:var(--space-sm)}.course-lesson-content{padding:var(--space-sm) var(--space-md) var(--space-xl)}.course-document-heading{grid-template-columns:minmax(0,1fr);gap:var(--space-md)}.course-reading-progress{width:min(12rem,100%);text-align:left}.project-detail>.detail-heading{padding-inline:var(--space-md)}.project-step-document .project-step-actions{position:static}}@media(max-width:420px){.course-lesson-actions{align-items:stretch}.course-lesson-actions button{flex:1;justify-content:center;min-width:0;padding-inline:var(--space-sm)}}.project-detail{padding-top:var(--space-md)}.detail-heading{max-width:58rem;padding:var(--space-sm) 0 var(--space-lg)}.project-detail-back{display:inline-flex;align-items:center;gap:var(--space-3xs);margin-bottom:var(--space-lg);color:var(--color-muted);font-size:var(--text-xs);font-weight:650}.project-detail-back:hover{color:var(--color-accent-strong)}.project-detail-back:focus-visible{outline:2px solid var(--color-focus);outline-offset:3px;border-radius:var(--radius-input)}.detail-heading h1{max-width:24ch;margin:0;color:var(--color-ink);font-family:var(--font-display);font-size:var(--text-2xl);font-weight:760;line-height:1.18;overflow-wrap:anywhere;min-width:0}.detail-heading>p:last-child{max-width:64ch;margin:var(--space-sm) 0 0;color:var(--color-muted);font-size:var(--text-md);line-height:1.75}.login-gate{position:relative;min-height:7.5rem;display:grid;grid-template-columns:3rem minmax(0,1fr) auto;align-items:center;gap:var(--space-md);padding:var(--space-lg);border:var(--rule-thin) solid var(--color-accent-3);border-radius:var(--radius-card);background:var(--color-accent-2);color:var(--color-accent-strong);box-shadow:var(--shadow-xs);overflow:hidden}.login-gate h2{margin:0;color:var(--color-ink);font-size:var(--text-lg)}.login-gate p{margin:var(--space-2xs) 0 0;color:var(--color-ink-2);line-height:1.65}.compact-primary,.primary-button{min-height:2.75rem;display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2xs);border:var(--rule-thin) solid var(--color-accent);border-radius:var(--radius-input);background:var(--color-accent);color:var(--color-accent-ink);font-weight:760;line-height:1;white-space:nowrap;box-shadow:var(--shadow-xs);transition:background-color var(--dur-short) var(--ease-out),border-color var(--dur-short) var(--ease-out),transform var(--dur-short) var(--ease-out),box-shadow var(--dur-short) var(--ease-out)}.compact-primary{padding:0 var(--space-md)}.compact-primary:hover,.primary-button:hover{border-color:var(--color-accent-strong);background:var(--color-accent-strong);transform:translateY(var(--lift-sm));box-shadow:var(--shadow-accent)}.primary-button:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.compact-primary:active,.primary-button:active{transform:translateY(0)}.compact-primary:disabled,.primary-button:disabled{opacity:.55;cursor:not-allowed;border-color:var(--color-rule-strong);background:var(--color-rule-strong);box-shadow:none;transform:none}.guide-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(18rem,21rem);gap:var(--space-xl);padding-top:var(--space-md)}.guide-main{min-width:0}.guide-section{padding:var(--space-lg) 0;border-bottom:var(--rule-thin) solid var(--color-rule)}.guide-section:first-child{padding-top:0}.guide-section h2{margin:0;color:var(--color-ink);font-size:var(--text-xl);line-height:1.2}.guide-section>p:last-child{max-width:72ch;margin:var(--space-xs) 0 0;color:var(--color-muted);line-height:1.8}.step-list{margin:var(--space-md) 0 0;padding:0;list-style:none}.step-list li{display:grid;grid-template-columns:2.25rem minmax(0,1fr);gap:var(--space-sm);padding:0 0 var(--space-md)}.step-list li>span{width:2.25rem;height:2.25rem;display:grid;place-items:center;border-radius:var(--radius-pill);background:var(--gradient-accent);color:var(--color-accent-ink);font-weight:760;box-shadow:var(--shadow-xs)}.step-list h3{margin:var(--space-3xs) 0 var(--space-2xs);color:var(--color-ink);font-size:var(--text-md)}.guide-side{padding-top:var(--space-3xs)}.side-section{padding:var(--space-md);margin-bottom:var(--space-sm);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-xs)}.side-section h2{display:flex;align-items:center;gap:var(--space-2xs);margin:0 0 var(--space-sm);color:var(--color-ink);font-size:var(--text-md)}.side-section h2 svg{color:var(--color-accent)}.side-section>p{color:var(--color-muted);line-height:1.7}.material-list>div{padding:var(--space-xs) 0;border-top:var(--rule-thin) solid var(--color-rule)}.material-list>div:first-child{border-top:0;padding-top:0}.material-list strong,.material-list span{display:block}.material-list strong{color:var(--color-ink-2);font-size:var(--text-sm)}.material-list span{margin-top:var(--space-3xs);color:var(--color-muted);font-size:var(--text-xs)}.material-list p{margin:var(--space-3xs) 0 0;color:var(--color-muted);font-size:var(--text-sm);line-height:1.6}.caution-section{border-color:color-mix(in oklch,var(--color-warning) 40%,var(--color-rule));background:var(--color-warm-2)}.caution-section h2 svg{color:var(--color-warning)}.caution-section>p{color:var(--color-warm-ink)}.attachment-row{display:grid;grid-template-columns:minmax(0,1fr) 2.375rem;gap:var(--space-xs);align-items:center;padding:var(--space-xs) 0;border-top:var(--rule-thin) solid var(--color-rule)}.attachment-row:first-of-type{border-top:0}.attachment-row strong,.attachment-row span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.attachment-row strong{color:var(--color-ink-2);font-size:var(--text-sm)}.attachment-row span{margin-top:var(--space-3xs);color:var(--color-muted);font-size:var(--text-xs)}.attachment-download{width:2.375rem;height:2.375rem;display:grid;place-items:center;border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-input);background:var(--color-surface);color:var(--color-accent-strong);transition:background-color var(--dur-short) var(--ease-out),transform var(--dur-short) var(--ease-out),border-color var(--dur-short) var(--ease-out)}.attachment-download:hover{background:var(--color-accent-2);border-color:var(--color-accent);transform:translateY(var(--lift-sm))}.attachment-note{margin:var(--space-sm) 0 0;padding-top:var(--space-xs);border-top:var(--rule-thin) dashed var(--color-rule);color:var(--color-muted);font-size:var(--text-xs);line-height:1.6}.project-step-workspace{display:grid;grid-template-columns:17rem minmax(0,1fr);gap:clamp(var(--space-xl),4vw,var(--space-3xl));align-items:start;padding:var(--space-lg) 0 var(--space-2xl);border-top:var(--rule-thin) solid var(--color-rule)}.project-step-sidebar{position:sticky;top:calc(var(--banner-height) + var(--space-md));min-width:0;max-height:calc(100vh - var(--banner-height) - 2 * var(--space-md));overflow-y:auto;padding-right:var(--space-sm);scrollbar-width:none}.project-step-sidebar::-webkit-scrollbar{display:none}.project-progress{margin-bottom:var(--space-sm);padding:var(--space-sm);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-xs)}.project-progress>div:first-child{display:flex;align-items:baseline;justify-content:space-between;gap:var(--space-sm);color:var(--color-ink-2);font-size:var(--text-sm);font-weight:700}.project-progress strong{color:var(--color-accent-strong);font-size:var(--text-md);font-variant-numeric:tabular-nums}.project-progress>div:nth-child(2){height:.375rem;margin-top:var(--space-xs);overflow:hidden;border-radius:var(--radius-pill);background:var(--color-rule)}.project-progress>div:nth-child(2) span{display:block;height:100%;border-radius:inherit;background:var(--gradient-accent);transition:width var(--dur-md) var(--ease-out)}.project-progress p{margin:var(--space-2xs) 0 0;color:var(--color-muted);font-size:var(--text-xs)}.project-step-sidebar nav{position:relative;display:grid;gap:var(--space-3xs)}.project-step-sidebar nav:before{position:absolute;z-index:-1;top:1.75rem;bottom:1.75rem;left:1.625rem;width:var(--rule-thin);background:var(--color-rule);content:""}.project-step-sidebar nav button{display:grid;grid-template-columns:2.25rem minmax(0,1fr);align-items:center;gap:var(--space-xs);min-height:3.75rem;padding:var(--space-2xs) var(--space-xs);border:0;border-radius:var(--radius-input);background:transparent;color:var(--color-muted);text-align:left;transition:background-color var(--dur-short) var(--ease-out),color var(--dur-short) var(--ease-out)}.project-step-sidebar nav button:hover{background:var(--color-paper-2);color:var(--color-ink)}.project-step-sidebar nav button:focus-visible{outline:2px solid var(--color-focus);outline-offset:1px}.project-step-sidebar nav button.active{background:var(--color-accent-2);color:var(--color-accent-strong)}.project-step-sidebar nav button.completed:not(.active){color:var(--color-ink-2)}.project-step-marker{position:relative;display:grid;place-items:center;width:1.75rem;height:1.75rem;justify-self:center;border:var(--rule-thin) solid var(--color-rule-strong);border-radius:var(--radius-pill);background:var(--color-surface);color:var(--color-muted);font-size:var(--text-xs);font-weight:760}.project-step-sidebar button.active .project-step-marker{border-color:var(--color-accent);background:var(--color-accent);color:var(--color-accent-ink)}.project-step-sidebar button.completed .project-step-marker{border-color:var(--color-success);background:var(--color-success);color:var(--color-accent-ink)}.project-step-sidebar nav button>span:last-child{min-width:0;overflow:hidden;color:inherit;font-size:var(--text-sm);font-weight:700;text-overflow:ellipsis;white-space:nowrap}.project-step-sidebar nav button small{display:block;margin-bottom:var(--space-3xs);color:var(--color-muted);font-size:var(--text-xs);font-weight:500}.project-step-document{min-width:0;width:100%;max-width:52rem;margin:0 auto;scroll-margin-top:calc(var(--banner-height) + var(--space-md))}.project-step-document>header{padding-bottom:var(--space-lg);border-bottom:var(--rule-thin) solid var(--color-rule)}.project-step-document>header h2{max-width:26ch;margin:0;color:var(--color-ink);font-size:var(--text-xl);font-weight:760;line-height:1.3;overflow-wrap:anywhere}.project-step-document>header>span{display:block;margin-top:var(--space-xs);color:var(--color-muted);font-size:var(--text-sm);line-height:1.6}.project-step-document>.rich-text-surface--readonly{padding:var(--space-xl) 0;color:var(--color-ink-2);font-size:var(--text-md);line-height:1.8}.project-preparation-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-xl);padding:var(--space-xl) 0}.project-preparation-grid>div{min-width:0;padding-top:var(--space-sm);border-top:var(--rule-thin) solid var(--color-rule)}.project-preparation-grid h3{display:flex;align-items:center;gap:var(--space-2xs);margin:0 0 var(--space-sm);color:var(--color-ink);font-size:var(--text-md)}.project-preparation-grid h3 svg{color:var(--color-accent-strong)}.project-preparation-grid>div>p{margin:0;color:var(--color-muted);line-height:1.75}.project-preparation-attachments{grid-column:1 / -1}.project-step-actions{position:sticky;z-index:3;bottom:0;display:flex;align-items:center;justify-content:space-between;gap:var(--space-md);margin-top:var(--space-xl);padding:var(--space-sm) 0;border-top:var(--rule-thin) solid var(--color-rule);background:color-mix(in oklch,var(--color-paper) 94%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.project-step-actions .primary-button{width:auto;min-width:12rem;margin:0}.project-step-actions .secondary-button{margin:0}.project-step-actions button{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2xs);white-space:nowrap}.auth-layout{width:min(68rem,calc(100% - 2 * var(--layout-page-gutter)));min-height:calc(100vh - var(--banner-height));margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr) minmax(20rem,24rem);align-items:center;gap:clamp(var(--space-2xl),6vw,5rem);padding:var(--space-xl) 0}.auth-context h1{font-family:var(--font-display)}.auth-context p:last-child{max-width:60ch;margin-top:var(--space-md);color:var(--color-muted);line-height:1.8}.login-form{border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);padding:var(--space-lg);box-shadow:var(--shadow-lg)}.form-heading{margin-bottom:var(--space-md)}.form-heading h2{margin:0;color:var(--color-ink);font-size:var(--text-xl)}.form-heading p{margin:var(--space-2xs) 0 0;color:var(--color-muted);font-size:var(--text-sm);line-height:1.6}.login-form label,.admin-form label{display:block;margin-top:var(--space-sm)}.login-form label>span,.admin-form label>span{display:block;margin-bottom:var(--space-2xs);color:var(--color-ink-2);font-size:var(--text-sm);font-weight:700}.primary-button{width:100%;margin-top:var(--space-md)}.form-note{margin:var(--space-xs) 0 0;color:var(--color-muted);font-size:var(--text-xs);line-height:1.6}.form-error{margin:var(--space-xs) 0 0;padding:var(--space-xs) var(--space-sm);border-radius:var(--radius-input);background:color-mix(in oklch,var(--color-danger) 10%,transparent);color:var(--color-danger);font-size:var(--text-sm);line-height:1.6;animation:pop-in var(--dur-short) var(--ease-out) both}.admin-shell{display:grid;grid-template-columns:15rem minmax(0,1fr);gap:clamp(var(--space-lg),3vw,var(--space-2xl));width:min(100%,108rem);margin:0 auto;padding:clamp(var(--space-md),2.5vw,var(--space-xl)) var(--gutter) var(--space-2xl)}.admin-nav{position:sticky;top:calc(var(--banner-height) + var(--space-md));align-self:start;display:flex;flex-direction:column;gap:var(--space-md);min-height:calc(100vh - var(--banner-height) - 2 * var(--space-xl));padding:var(--space-md) var(--space-xs);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-xs)}.admin-nav-brand{display:flex;align-items:center;gap:var(--space-xs);padding:0 var(--space-xs) var(--space-sm);border-bottom:var(--rule-thin) solid var(--color-rule);color:var(--color-ink);font-size:var(--text-md)}.admin-nav-brand>div{display:grid;gap:2px;min-width:0}.admin-nav-brand strong{font-size:var(--text-md);line-height:1.2}.admin-nav-brand small{color:var(--color-muted);font-size:.6875rem;font-weight:500;letter-spacing:.02em}.admin-nav-mark{display:grid;place-items:center;width:2rem;height:2rem;border-radius:var(--radius-input);color:var(--color-accent-ink);background:var(--color-accent)}.admin-nav-list{display:flex;flex-direction:column;gap:2px}.admin-nav-item{display:flex;align-items:center;gap:var(--space-xs);min-height:2.625rem;padding:0 var(--space-sm);border-radius:var(--radius-input);color:var(--color-ink-2);font-size:var(--text-sm);font-weight:650;transition:background-color var(--dur-short) var(--ease-out),color var(--dur-short) var(--ease-out),transform var(--dur-short) var(--ease-out)}.admin-nav-item:hover{background:var(--color-paper-2);color:var(--color-ink)}.admin-nav-item.is-active{background:var(--color-accent-2);color:var(--color-accent-strong);box-shadow:inset 3px 0 0 var(--color-accent)}.admin-nav-item.is-soon{cursor:default;color:var(--color-muted);opacity:.85}.admin-nav-item.is-soon:hover{background:transparent;color:var(--color-muted)}.admin-nav-badge{margin-left:auto;padding:0 var(--space-3xs);border-radius:var(--radius-input);background:var(--color-paper-2);color:var(--color-muted);font-size:.625rem;font-weight:600}.admin-nav-home{display:flex;align-items:center;justify-content:space-between;gap:var(--space-xs);margin:auto var(--space-xs) 0;padding:var(--space-xs) var(--space-sm);border-top:var(--rule-thin) solid var(--color-rule);color:var(--color-muted);font-size:var(--text-xs)}.admin-nav-home:hover{color:var(--color-accent-strong)}.admin-content{min-width:0;display:flex;flex-direction:column;gap:var(--space-md)}.admin-breadcrumb{display:flex;align-items:center;gap:var(--space-3xs);min-height:1.5rem;color:var(--color-muted);font-size:var(--text-xs)}.admin-breadcrumb .is-current{color:var(--color-ink-2);font-weight:600}.admin-breadcrumb-sep{color:var(--color-rule)}.admin-view{display:flex;flex-direction:column;gap:var(--space-lg)}.admin-view-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--space-md);flex-wrap:wrap}.admin-view-heading h1{margin:var(--space-3xs) 0 0;color:var(--color-ink);font-size:clamp(1.35rem,2vw,var(--text-xl));line-height:1.2;letter-spacing:-.01em}.admin-view-heading>div>p:not(.eyebrow){max-width:52ch;margin:var(--space-xs) 0 0;color:var(--color-muted);font-size:var(--text-sm);line-height:1.6}.admin-toolbar{display:flex;align-items:center;justify-content:space-between;gap:var(--space-sm);flex-wrap:wrap}.admin-search{position:relative;display:flex;align-items:center;flex:1 1 16rem;min-width:12rem;color:var(--color-muted)}.admin-search svg{position:absolute;left:var(--space-xs);pointer-events:none}.admin-search .text-input{padding-left:calc(var(--space-xs) + 1.5rem)}.admin-filter{display:inline-flex;gap:var(--space-3xs);padding:var(--space-3xs);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-input);background:var(--color-paper-2)}.admin-filter button{padding:var(--space-3xs) var(--space-sm);border-radius:calc(var(--radius-input) - 2px);color:var(--color-ink-2);font-size:var(--text-sm);font-weight:600;transition:background-color var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}.admin-filter button.is-active{background:var(--color-surface);color:var(--color-accent-strong);box-shadow:var(--shadow-xs)}.admin-table{border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-xs);overflow:hidden}.admin-table-head,.admin-row{display:grid;grid-template-columns:minmax(0,1fr) 8rem 6rem 8.5rem;gap:var(--space-sm);align-items:center;padding:var(--space-sm) var(--space-md)}.admin-table-head{background:var(--color-paper-2);color:var(--color-muted);font-size:var(--text-xs);font-weight:700;text-transform:uppercase;letter-spacing:.04em}.admin-row{min-height:4.5rem;border-top:var(--rule-thin) solid var(--color-rule);transition:background-color var(--dur-short) var(--ease-out)}.admin-row:hover{background:var(--color-paper-2)}.admin-row-main{display:flex;flex-direction:column;gap:var(--space-3xs);min-width:0}.admin-row-title{text-align:left;color:var(--color-ink);font-size:var(--text-md);font-weight:600;line-height:1.3}.admin-row-title:hover{color:var(--color-accent-strong)}.admin-row-slug{color:var(--color-muted);font-size:var(--text-xs)}.admin-row-type{color:var(--color-ink-2);font-size:var(--text-sm)}.admin-status{justify-self:start;padding:var(--space-3xs) var(--space-xs);border-radius:var(--radius-input);font-size:var(--text-xs);font-weight:700}.admin-status.is-published{background:var(--color-accent-2);color:var(--color-accent-strong)}.admin-status.is-draft{background:var(--color-paper-2);color:var(--color-muted)}.admin-row-actions{display:flex;gap:var(--space-3xs);justify-content:flex-end}.admin-section-heading{display:flex;align-items:center;justify-content:space-between;gap:var(--space-xs);margin-bottom:var(--space-sm)}.admin-section-heading h3{margin:0;color:var(--color-ink);font-size:var(--text-md)}.admin-section-heading .secondary-button{min-height:2.25rem;padding:0 var(--space-sm);font-size:var(--text-sm)}.admin-editor-body{display:grid;grid-template-columns:minmax(0,1fr);min-width:0}.admin-form{min-width:0}.admin-fieldset{margin:0 0 var(--space-md);padding:var(--space-lg);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-xs)}.admin-fieldset h2{margin:0 0 var(--space-md);color:var(--color-ink);font-size:var(--text-lg)}.admin-fieldset>label+label{margin-top:var(--space-sm)}.admin-field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-sm)}.publish-layout{display:grid;grid-template-columns:18rem minmax(0,1fr);gap:var(--space-lg);align-items:start}.publish-sidebar{position:sticky;top:calc(var(--banner-height) + var(--space-md));align-self:start;padding:var(--space-md);border-right:var(--rule-thin) solid var(--color-rule)}.publish-main{min-width:0}.publish-section{border-radius:var(--radius-input)}.cover-uploader{padding-bottom:var(--space-md);border-bottom:var(--rule-thin) solid var(--color-rule)}.cover-placeholder{display:grid;place-items:center;aspect-ratio:3 / 2;margin-bottom:var(--space-sm);border-radius:var(--radius-input);background:var(--color-paper-2);color:var(--color-rule-strong);font-size:var(--text-xl);font-weight:800;letter-spacing:.08em}.cover-placeholder{overflow:hidden}.cover-placeholder img{width:100%;height:100%;object-fit:cover}.cover-upload-button{display:grid;place-items:center;min-height:2.625rem;margin:0;border-radius:var(--radius-input);background:var(--color-accent);color:var(--color-accent-ink);cursor:pointer;font-size:var(--text-sm);font-weight:700}.cover-upload-button input{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.cover-uploader p{margin:var(--space-xs) 0 0;color:var(--color-muted);font-size:var(--text-xs);line-height:1.6}.cover-file-name{overflow:hidden;color:var(--color-accent-strong)!important;text-overflow:ellipsis;white-space:nowrap}.cover-delete-button{width:100%;margin-top:var(--space-xs);color:var(--color-danger, var(--color-accent-strong));font-size:var(--text-xs);text-align:center}.cover-delete-button:hover{text-decoration:underline}.cover-crop-preview{width:100%;overflow:hidden;aspect-ratio:3 / 2;border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-input);background:var(--color-paper-2)}.cover-crop-preview--course{aspect-ratio:16 / 9}.cover-crop-preview img{width:100%;height:100%;object-fit:cover}.publish-side-field{margin-top:var(--space-md)}.publish-side-field>span{display:block;margin-bottom:var(--space-2xs);color:var(--color-ink-2);font-size:var(--text-sm);font-weight:700}.publish-side-field .text-input{background:var(--color-paper-2)}.cost-input{display:grid;grid-template-columns:2rem minmax(0,1fr);align-items:center}.cost-input>span{display:grid;place-items:center;height:2.625rem;border:var(--rule-thin) solid var(--color-rule);border-right:0;border-radius:var(--radius-input) 0 0 var(--radius-input);color:var(--color-muted)}.cost-input .text-input{border-radius:0 var(--radius-input) var(--radius-input) 0}.tag-preview{display:flex;align-items:center;flex-wrap:wrap;gap:var(--space-2xs);margin-bottom:var(--space-sm);padding:var(--space-sm);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-input);background:var(--color-paper-2)}.tag-preview span{color:var(--color-muted);font-size:var(--text-xs)}.tag-preview strong{padding:var(--space-3xs) var(--space-xs);border-radius:var(--radius-pill);background:var(--color-accent-2);color:var(--color-accent-strong);font-size:var(--text-xs)}.tag-preview small{color:var(--color-muted);font-size:var(--text-xs)}.materials-table{overflow-x:auto;border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-input)}.materials-table-row{display:grid;grid-template-columns:3rem minmax(8rem,1.3fr) minmax(8rem,1.3fr) 5rem minmax(8rem,1fr) 4.5rem 2.5rem;gap:0;min-width:42rem;align-items:center;border-top:var(--rule-thin) solid var(--color-rule)}.materials-table-row:first-child{border-top:0}.materials-table-row>*{min-width:0;min-height:2.75rem;padding:var(--space-2xs);border-right:var(--rule-thin) solid var(--color-rule)}.materials-table-row>*:last-child{border-right:0}.materials-table-head{background:var(--color-paper-2);color:var(--color-ink-2);font-size:var(--text-xs);font-weight:700;text-align:center}.materials-table-row .text-input{height:2.25rem;border:0;border-radius:0;background:transparent;font-size:var(--text-sm)}.material-index{color:var(--color-muted);font-size:var(--text-sm);text-align:center}.buy-placeholder{min-height:2.25rem;padding:0 var(--space-2xs);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-input);color:var(--color-muted);font-size:var(--text-xs);white-space:nowrap}.publish-action-bar{position:sticky;bottom:0;z-index:4;display:flex;align-items:center;gap:var(--space-sm);min-height:4.25rem;margin-top:var(--space-sm);padding:var(--space-sm) var(--space-md);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:color-mix(in oklch,var(--color-surface) 94%,transparent);box-shadow:var(--shadow-lg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.publish-check{display:inline-flex;align-items:center;gap:var(--space-2xs);color:var(--color-muted);font-size:var(--text-xs);white-space:nowrap}.publish-check input{accent-color:var(--color-accent)}.publish-action-spacer{flex:1}.publish-action-bar .primary-button{width:auto;margin:0}.publish-button{min-width:9rem}.tutorial-entry{border-style:dashed}.tutorial-entry .admin-section-heading{margin-bottom:0}.tutorial-entry-note{margin:var(--space-sm) 0 0;color:var(--color-muted);font-size:var(--text-sm)}.course-content-entry{margin-top:var(--space-md);margin-bottom:0;box-shadow:none}.course-cover-editor{max-width:44rem}.course-cover-upload{position:relative;cursor:pointer}.course-cover-upload input{position:absolute;width:1px;height:1px;overflow:hidden;opacity:0}.course-cover-preview{display:grid;place-items:center;width:min(24rem,100%);aspect-ratio:3 / 2;overflow:hidden;border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-accent-2);color:var(--color-accent-strong)}.course-cover-preview img{display:block;width:100%;height:100%;object-fit:cover}.course-subsection-heading{display:flex;align-items:center;justify-content:space-between;gap:var(--space-sm);margin-top:var(--space-lg);padding-top:var(--space-md);border-top:var(--rule-thin) solid var(--color-rule)}.course-subsection-heading>div{display:flex;align-items:baseline;gap:var(--space-xs)}.course-subsection-heading span,.course-subsection-empty{color:var(--color-muted);font-size:var(--text-sm)}.course-subsection-list{margin-top:var(--space-sm)}.course-subsection-row{display:grid;grid-template-columns:3rem minmax(12rem,1fr) 2.5rem 2.5rem auto 2.5rem;gap:var(--space-xs);align-items:center;padding:var(--space-xs) 0;border-top:var(--rule-thin) solid var(--color-rule)}.course-subsection-number{color:var(--color-muted);font-size:var(--text-sm);font-variant-numeric:tabular-nums}.course-subsection-empty{padding:var(--space-lg) 0 var(--space-xs);text-align:center}.tutorial-page{display:flex;flex-direction:column;gap:var(--space-md);min-height:calc(100vh - var(--banner-height) - var(--space-xl))}.tutorial-page-header{display:flex;align-items:center;justify-content:space-between;gap:var(--space-md);padding-bottom:var(--space-sm);border-bottom:var(--rule-thin) solid var(--color-rule)}.tutorial-page-title{display:flex;align-items:center;gap:var(--space-sm);min-width:0}.tutorial-page-title p{margin:0;color:var(--color-muted);font-size:var(--text-xs)}.tutorial-page-title h1{margin:var(--space-3xs) 0 0;overflow-wrap:anywhere;color:var(--color-ink);font-size:var(--text-xl)}.tutorial-save-area{display:flex;align-items:center;gap:var(--space-sm)}.tutorial-save-state{color:var(--color-muted);font-size:var(--text-xs);white-space:nowrap}.tutorial-save-state[data-state=dirty],.tutorial-save-state[data-state=error]{color:var(--color-accent-strong)}.admin-settings-page{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-lg);max-width:78rem}.admin-settings-heading{display:block;grid-column:1 / -1}.admin-settings-heading span{display:block;margin-top:var(--space-xs);color:var(--color-muted);font-size:var(--text-sm)}.admin-settings-form{display:grid;align-content:start;gap:var(--space-xs);min-width:0;padding:clamp(var(--space-md),2.5vw,var(--space-lg));border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-xs)}.admin-settings-form h2{margin:0;font-size:var(--text-md)}.admin-settings-form .admin-section-heading{margin-bottom:var(--space-sm)}.admin-field-hint{margin:0 0 var(--space-sm);color:var(--color-muted);font-size:var(--text-xs);line-height:1.6}.admin-orphan-list{display:grid;gap:var(--space-2xs);margin:0;padding:0;list-style:none}.admin-orphan-list li{display:grid;grid-template-columns:auto minmax(0,1fr);gap:var(--space-2xs) var(--space-xs);padding:var(--space-xs);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-input);font-size:var(--text-xs)}.admin-orphan-list code{grid-column:1 / -1;overflow-wrap:anywhere;color:var(--color-muted)}.admin-user-list{grid-column:1 / -1}.teaching-center-page{width:min(100% - 2rem,1180px);margin-inline:auto;padding-block:2rem 4rem}.teaching-center-page .admin-view-heading{margin-bottom:1.5rem;padding:1.5rem 1.75rem;border:1px solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface)}.teaching-center-page .admin-view-heading h1{margin-bottom:.4rem}.teaching-center-page .admin-view-heading p:last-child{margin:0;color:var(--color-muted)}.teaching-center-page>.empty-state{min-height:9rem;display:grid;place-items:center;margin:0 0 1.5rem;border:1px dashed var(--color-rule-strong);border-radius:var(--radius-card);background:var(--color-paper-2);color:var(--color-muted)}.teaching-center-page .admin-table,.teaching-center-page .admin-form-panel{margin-bottom:1.5rem}.teaching-center-page .admin-section-heading{align-items:flex-start}.student-assignment-section{margin-block:1.25rem;padding:1rem 1.25rem;border-left:3px solid var(--color-accent);background:var(--color-paper-2)}.student-assignment-section h3{margin:0 0 .75rem;font-size:var(--text-md)}@media(max-width:700px){.teaching-center-page{width:min(100% - 1rem,1180px);padding-top:1rem}.teaching-center-page .admin-view-heading{gap:1rem;padding:1.25rem}.teaching-center-page .admin-heading-actions{width:100%}.teaching-center-page .admin-heading-actions button{flex:1}}.admin-create-user-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.admin-create-user-form label{display:grid;gap:.5rem}.admin-create-user-form input,.admin-create-user-form select{width:100%;min-width:0;padding:.65rem;border:1px solid var(--color-rule);border-radius:4px;background:var(--color-surface);color:var(--color-ink)}.admin-create-user-form .primary-button{margin:0}@media(max-width:600px){.admin-create-user-form{grid-template-columns:minmax(0,1fr)}}.admin-user-list .admin-section-heading{margin-bottom:var(--space-sm)}.admin-user-list .admin-section-heading>div{display:grid;gap:2px}.admin-user-list .admin-section-heading p{margin:0;color:var(--color-muted);font-size:var(--text-xs)}.admin-user-table{overflow:hidden;border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-input)}.admin-user-row{display:grid;grid-template-columns:minmax(12rem,1.5fr) 7rem minmax(10rem,1fr) 8rem;gap:var(--space-sm);align-items:center;min-height:3.25rem;padding:0 var(--space-md);border-top:var(--rule-thin) solid var(--color-rule);color:var(--color-ink-2);font-size:var(--text-sm)}.admin-user-row:first-child{border-top:0}.admin-user-head{min-height:2.5rem;background:var(--color-paper-2);color:var(--color-muted);font-size:var(--text-xs);font-weight:700}.admin-user-row time{color:var(--color-muted);font-size:var(--text-xs)}@media(max-width:800px){.admin-settings-page{grid-template-columns:minmax(0,1fr)}.admin-settings-heading{grid-column:auto}}.tutorial-save{width:auto;min-width:8rem;margin:0}.tutorial-page-workspace{display:grid;grid-template-columns:var(--layout-outline-width) minmax(0,1fr);min-width:0;flex:1;background:transparent}.tutorial-page-workspace .tutorial-outline{position:sticky;top:calc(var(--banner-height) + var(--space-md));max-height:calc(100vh - var(--banner-height) - 8rem)}.tutorial-page-workspace .tutorial-document{grid-column:2;width:100%;min-width:0;max-width:none;margin:0;padding:var(--space-md) 0 var(--space-md) var(--space-md)}.tutorial-page-workspace .rich-text-editor{min-height:calc(100vh - 14rem);border:0;border-radius:0;box-shadow:var(--shadow-sm)}.tutorial-page-workspace .rich-text-surface{min-height:calc(100vh - 19rem);max-height:none;overflow:visible;padding:var(--space-xl) clamp(var(--space-lg),1.8vw,var(--space-2xl))}.project-tutorial-workspace{grid-template-columns:14rem minmax(0,1fr);gap:var(--space-md)}.project-step-manager{padding:var(--space-sm);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-xs);scrollbar-width:none}.project-step-manager::-webkit-scrollbar{display:none}.project-step-manager .tutorial-outline-heading{justify-content:flex-start;margin-bottom:var(--space-sm)}.project-step-manager .tutorial-outline-heading>button{display:grid;place-items:center;width:1.75rem;height:1.75rem;min-height:0;margin-left:auto;padding:0;border-radius:var(--radius-input);color:var(--color-accent-strong)}.project-step-manager nav button{display:grid;grid-template-columns:1.75rem minmax(0,1fr);align-items:center;gap:var(--space-2xs);min-height:2.875rem;padding:var(--space-2xs);border-radius:var(--radius-input)}.project-step-manager nav button small{display:grid;place-items:center;width:1.5rem;height:1.5rem;border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-pill);background:var(--color-paper-2);font-size:var(--text-xs);font-variant-numeric:tabular-nums}.project-step-manager nav button span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.project-step-manager nav button.is-active{background:var(--color-accent-2);color:var(--color-accent-strong)}.project-step-manager nav button.is-active small{border-color:var(--color-accent);background:var(--color-accent);color:var(--color-accent-ink)}.project-step-manager-actions{display:flex;gap:var(--space-3xs);margin-top:var(--space-xs);padding-top:var(--space-xs);border-top:var(--rule-thin) solid var(--color-rule)}.project-step-manager-actions button{display:grid;place-items:center;width:2rem;height:2rem;min-height:0;padding:0;border:0;border-radius:var(--radius-input);background:transparent;color:var(--color-muted)}.project-step-manager-actions button:hover:not(:disabled){background:var(--color-paper-2);color:var(--color-ink)}.project-step-manager-actions button:disabled{opacity:.35}.project-step-manager-actions button.danger{margin-left:auto}.project-step-manager-actions button.danger:hover:not(:disabled){color:var(--color-danger)}.project-step-outline{display:grid;gap:0;margin-top:var(--space-lg);padding-top:var(--space-sm);border-top:var(--rule-thin) solid var(--color-rule)}.project-step-outline>span{margin-bottom:var(--space-xs);font-size:var(--text-xs);font-weight:700;color:var(--color-ink-2)}.project-step-title-field{display:grid;gap:var(--space-xs);max-width:52rem;margin:0 auto var(--space-sm);padding:var(--space-sm) var(--space-md);border:var(--rule-thin) solid var(--color-rule);border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-xs)}.project-step-title-field>span{display:flex;align-items:center;justify-content:space-between;gap:var(--space-sm);color:var(--color-muted)}.project-step-title-field strong{color:var(--color-ink-2);font-size:var(--text-sm)}.project-step-title-field small{font-size:var(--text-xs);font-variant-numeric:tabular-nums}.project-step-title-field input{width:100%;height:2.75rem;padding:0;border:0;border-bottom:var(--rule-thin) solid 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[data-type=heading][data-level="8"],.rich-text-surface.rich-text-surface--editable [data-type=heading][data-level="9"],.rich-text-surface.rich-text-surface--readonly [data-type=heading][data-level="9"]{margin:1.1rem 0 .45rem;color:var(--editor-text-primary);font-size:1rem;font-weight:650;line-height:1.5}.rich-text-surface.rich-text-surface--editable ul,.rich-text-surface.rich-text-surface--editable ol,.rich-text-surface.rich-text-surface--readonly ul,.rich-text-surface.rich-text-surface--readonly ol{margin:.5rem 0 1rem;padding-left:1.6rem;font-size:var(--editor-body-size);line-height:1.8}.rich-text-surface.rich-text-surface--editable li,.rich-text-surface.rich-text-surface--readonly li{margin:.15rem 0;padding-left:.2rem}.rich-text-surface.rich-text-surface--editable blockquote,.rich-text-surface.rich-text-surface--readonly blockquote{margin:1rem 0;padding:.1rem 0 .1rem 1rem;border-left:3px solid var(--editor-divider);color:var(--editor-text-secondary)}.rich-text-surface.rich-text-surface--editable a,.rich-text-surface.rich-text-surface--readonly a{color:var(--editor-accent);text-decoration:none}.rich-text-surface.rich-text-surface--editable a:hover,.rich-text-surface.rich-text-surface--readonly a:hover{text-decoration:underline;text-underline-offset:2px}.rich-text-surface.rich-text-surface--editable :not(pre)>code,.rich-text-surface.rich-text-surface--readonly :not(pre)>code{padding:.125rem .3rem;border-radius:.25rem;background:var(--editor-inline-code-bg);color:#d83931;font-size:.875em}.rich-text-surface.rich-text-surface--editable hr,.rich-text-surface.rich-text-surface--readonly hr{margin:1.75rem 0;border:0;border-top:1px solid var(--editor-divider)}@media(max-width:760px){.home-start{grid-template-columns:minmax(0,1fr);min-height:0;padding:var(--space-lg) var(--space-md)}.build-path{border-top:var(--rule-thin) solid var(--color-rule);border-left:0;margin:var(--space-lg) 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