/* Single-page course: deliberate hierarchy, fixed-frame motion, quiet controls. */
.course-page{animation:none;background:#f2f5f8;overflow:clip}
.course-section{scroll-margin-top:90px;padding:85px 6vw;color:#1f3042}
.course-heading{display:grid;grid-template-columns:42px 1fr;gap:18px;align-items:start;margin-bottom:35px}
.segment-number{padding-top:14px;font-size:12px;color:#91a4b6;font-variant-numeric:tabular-nums}
.course-heading h2{font-size:clamp(36px,4.4vw,60px);line-height:1.28;font-weight:550;letter-spacing:-.045em;text-wrap:balance;max-width:1000px}
.course-heading p{font-size:16px;line-height:1.8;color:#7b8fa3;margin-top:20px;max-width:900px}
.course-page h1,.course-page h2,.course-page h3,.course-page h4{text-wrap:balance}
.course-page .hero{min-height:100svh;padding:160px 6vw 100px}
.course-page .hero-image{animation:none;transform:scale(1.03);background-image:url('assets/hero-environment-v2.png')}
.hero-portal{position:absolute;left:47%;top:3%;width:53%;height:89%;z-index:-2;pointer-events:none}
.hero-portal canvas{display:block;width:100%;height:100%;filter:drop-shadow(0 0 30px #a6d9ef24)}
.course-page .hero:before{background:linear-gradient(90deg,#05070be6 0,#05070b40 42%,transparent 68%),linear-gradient(0deg,#07090d,transparent 25%)}
.course-page .hero-copy{width:50%;padding:0;margin-top:5px}
.course-page .hero h1{font-size:clamp(66px,7.6vw,118px);line-height:1.16;letter-spacing:-.06em;font-weight:550}
.course-page .hero-subtitle{font-size:24px;margin-top:34px;color:#d3dde7}
.course-page .hero-description{font-size:14px;margin-top:15px;letter-spacing:.06em;color:#8e9eae}
.course-page .hero-buttons{margin-top:35px}.course-page .hero-bottom{font-size:10px;color:#8192a5;letter-spacing:.04em}
.portal-fallback{display:grid;place-items:center}.fallback-frame{width:min(80%,490px);aspect-ratio:1;border-radius:50%;border:18px solid #b2c3d3;background:#05101c;box-shadow:inset 0 0 30px #7198b8,0 0 35px #80b1d02b;transform:rotateY(-15deg)}.fallback-frame i{display:block;width:100%;height:100%;border-radius:50%;background:radial-gradient(ellipse at 25% 30%,#baddea,#507895 25%,#142b44 47%,#060e1b 63%);background-size:180% 160%;animation:fallback-fluid 18s ease-in-out infinite alternate}@keyframes fallback-fluid{to{background-position:90% 70%}}
.course-rail{position:fixed;right:22px;top:50%;transform:translateY(-50%);height:220px;width:20px;z-index:45;color:#b9c9d9}
.rail-track{position:absolute;left:9px;top:6px;bottom:39px;width:1px;background:#9cbbd63b}.rail-track i{display:block;background:#bdd9ee;height:100%;transform:scaleY(0);transform-origin:top}
.rail-points{position:relative;height:180px;display:flex;flex-direction:column;justify-content:space-between}.rail-points>a{position:relative;display:grid;place-items:center;width:20px;height:20px}.rail-points i{width:5px;height:5px;border-radius:50%;background:#819db3;border:1px solid #0d192536;transition:box-shadow .3s,background .3s}.rail-points [aria-current=location] i{background:#e4f1fc;box-shadow:0 0 0 4px #b8d7ef25}
.rail-points span{position:absolute;right:25px;white-space:nowrap;font-size:10px;padding:8px 13px;border-radius:16px;background:#1a293de6;color:#d8e5f2;opacity:0;transform:translateX(5px);transition:opacity .2s,transform .2s;pointer-events:none}.rail-points a:hover span,.rail-points a:focus-visible span{opacity:1;transform:none}.rail-progress{display:block;text-align:center;font-size:9px;margin-top:14px;color:#8ba6bb;font-variant-numeric:tabular-nums}
.rail-light .rail-track{background:#69849e25}.rail-light .rail-track i{background:#6e91b0}.rail-light .rail-points i{background:#b8c8d7;border-color:#fff}.rail-light .rail-points [aria-current=location] i{background:#527796;box-shadow:0 0 0 4px #a3bed432}.rail-light .rail-points span{background:#edf3faf2;color:#5d7b95;box-shadow:0 5px 20px #38516a17}
.main-nav a[aria-current=location]{background:rgba(255,255,255,.13);opacity:1}.header-light .main-nav a[aria-current=location]{background:#fff;box-shadow:0 3px 15px #18213c0c}
.model-section{background:linear-gradient(#07090d 0,#8091a4 85px,#edf2f7 170px,#f2f5f8 230px);padding-top:235px;padding-bottom:45px}
.capability-track{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:23px 0 30px;border-bottom:1px solid #bacadb3d;margin-bottom:30px}.capability-track>div{flex:1}.capability-track>div>span{font-size:18px;color:#496983;font-weight:500}.capability-track p{font-size:12px;color:#92a4b5;margin-top:10px}.capability-track>i{font-style:normal;font-size:19px;color:#b1c2d2;margin-right:30px}
.course-page .model-gallery{margin-bottom:35px}.course-page .model-carousel{height:330px}.course-page .model-sculpture{top:15px}.course-page .company-profile{padding:35px 42px}.course-page .company-intro h3{font-size:30px}.course-page .release-focus h3{font-size:26px}.course-page .release-halo{width:75px;height:75px;font-size:38px;margin:18px auto}.course-page .release-timeline{padding-top:32px}
.benchmark-intro{margin:60px 0 28px}.benchmark-intro h3{font-size:29px;font-weight:500}.benchmark-intro p{font-size:14px;color:#8297aa;margin-top:14px}.course-page .benchmark-top h3{font-size:28px}.course-page .benchmark-card{padding:32px 35px}.course-page .chart-row{min-height:64px}
.agent-section{padding-top:60px;background:linear-gradient(#f2f5f8,#e7edf4 65%,#f2f5f8)}
.concept-connection{display:flex;align-items:center;justify-content:center;gap:25px;padding:26px;margin:0 0 60px;border-top:1px solid #bfcedc40;border-bottom:1px solid #bfcedc40;color:#8ba1b6;font-size:16px}.concept-connection i{font-style:normal;font-size:21px;color:#a3b8ca}.concept-connection strong{font-weight:500;color:#587b98}
.course-page .anatomy-stage{height:590px;scroll-margin-top:110px}.course-page .anatomy-caption strong{font-size:17px}.course-page .anatomy-sidebar{top:105px;gap:7px}.course-page .anatomy-sidebar button{padding:12px 15px}.course-page .agent-viewport{inset:22px 45px 75px 200px}.course-page .scene-tools{top:190px}.course-page .layer-explanation{padding:30px 10px;margin-top:0}.course-page .layer-title h3{font-size:23px}.course-page .layer-explanation p,.course-page .layer-action strong{font-size:13px}
.compact-flow{display:flex;gap:18px;align-items:center;justify-content:space-between;margin:35px 0 0;padding:25px 0;border-top:1px solid #bdcedd50;border-bottom:1px solid #bdcedd50}.compact-flow>div{display:flex;align-items:center;gap:14px}.compact-flow span{font-size:10px;color:#9ab0c4}.compact-flow strong{font-size:15px;font-weight:400;color:#657f98}.compact-flow>i{font-style:normal;color:#a7bbce}
.install-section{padding-top:80px;padding-bottom:75px}.install-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:23px}
.install-card{border-radius:25px;background:linear-gradient(140deg,#fff,#ebf1f7);border:1px solid #fff;box-shadow:0 20px 55px #4a718e16;overflow:hidden}
.installer-screen{height:185px;position:relative;overflow:hidden;background:#dfe8f1;border-bottom:1px solid #ccdae752;padding:15px 15px 0;display:flex;align-items:start;justify-content:center}.installer-screen img{width:100%;height:100%;object-fit:cover;object-position:top center;border-radius:9px 9px 0 0;box-shadow:0 12px 20px #506f9226}.installer-screen>span{position:absolute;right:15px;bottom:12px;background:#f0f6fbe3;border:1px solid #fff;border-radius:15px;padding:6px 10px;font-size:8px;color:#728aa0;backdrop-filter:blur(15px)}
.install-card-body{padding:28px 26px}.install-brand{display:flex;gap:15px;align-items:center}.install-brand .app-glyph{height:42px;width:42px;border-radius:12px;flex-shrink:0}.install-brand h3{font-size:22px;font-weight:500;line-height:1.4;letter-spacing:-.03em;white-space:nowrap}.install-brand>div>span{display:block;font-size:10px;color:#93a7bb;margin-top:7px}.install-tagline{margin:19px 0 23px;font-size:13px;color:#8399ad}
.installer-os{display:flex;gap:4px;background:#dee7f066;border-radius:18px;padding:4px;margin-bottom:25px}.installer-os button{width:50%;padding:8px;border-radius:15px;background:transparent;color:#8299ae;font-size:11px}.installer-os [aria-selected=true]{background:#fff;color:#577998;box-shadow:0 3px 10px #6685a013}
.install-steps{list-style:none;margin:0;padding:0;display:grid;gap:22px;min-height:286px}.install-steps li{display:grid;grid-template-columns:22px 1fr;gap:13px}.install-steps li>span{height:20px;width:20px;border:1px solid #a9c0d473;border-radius:50%;display:grid;place-items:center;color:#88a2b9;font-size:9px;margin-top:2px}.install-steps h4{margin:0 0 8px;font-size:16px;color:#4c6c89;font-weight:500}.install-steps p{font-size:12px;line-height:1.8;color:#849aae}.install-support{font-size:10px;line-height:1.8;color:#9badbf;margin-top:22px;border-top:1px solid #bbcddf3b;padding-top:17px;min-height:51px}.install-links{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-top:17px}.install-links .text-link{font-size:11px;color:#5c7e9c}.install-links .icon{width:13px;height:13px}.install-extra{margin-top:25px;border-top:1px solid #c6d7e847;padding-top:17px;color:#8ca3b8}.install-extra summary{cursor:pointer;font-size:11px}.install-extra p{font-size:12px;margin-top:13px;line-height:1.8;color:#7893ac}
.skills-section{background:linear-gradient(#f2f5f8,#e7eef5 55%,#f2f5f8);padding-top:75px;padding-bottom:70px}.course-page .extension-grid{gap:23px}.course-page .extension-card{padding:30px;min-height:285px}.course-page .extension-card .icon{margin-bottom:22px;width:34px;height:34px}.course-page .extension-card h3{font-size:25px;margin-bottom:16px}.course-page .extension-card strong{font-size:15px;font-weight:400;color:#64829d}.course-page .extension-card p{margin-top:12px;font-size:13px;color:#8ca3b7}.course-page .extension-example{font-size:12px;color:#8ba1b5;margin-top:23px;padding-top:17px}
.skill-method{display:grid;grid-template-columns:1fr .85fr;gap:60px;align-items:center;margin-top:55px}.skill-method h3{font-size:29px;font-weight:500;max-width:550px;line-height:1.5}.skill-method p{font-size:15px;color:#819bb2;line-height:1.9;margin-top:23px;max-width:500px}.extension-links{display:flex;gap:25px;flex-wrap:wrap;margin-top:25px}.extension-links .text-link{font-size:11px;color:#6e8da8}.course-page .skill-file{padding:25px;box-shadow:0 22px 65px #19354c21}.course-page .skill-file pre{font-size:14px;line-height:2.1;color:#b3c9df;margin-top:18px}.course-page .file-header{font-size:10px;padding-bottom:17px}
.task-method{margin-top:55px;padding:35px 0;border-top:1px solid #c1d3e34f;border-bottom:1px solid #c1d3e34f}.task-method>h3{font-size:27px;font-weight:500}.brief-parts{display:flex;gap:16px;margin:28px 0 30px}.brief-parts span{padding:10px 22px;border-radius:20px;background:#dae7f26e;border:1px solid #f8fcff;color:#6b8ba5;font-size:12px}.composer-details summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:#6988a2}.composer-details summary>span{font-size:18px}.composer-details[open] summary>span{transform:rotate(45deg)}.composer-details .composer-layout{margin-top:35px}.course-page .composer-field{grid-template-columns:62px 1fr;gap:15px}.course-page .composer-field textarea{font-size:13px;line-height:1.8}.course-page .composer-preview{position:sticky;top:120px}.course-page .composer-preview pre{font-size:13px;line-height:1.8}
.projects-section{padding-top:80px;padding-bottom:0;background:linear-gradient(#f2f5f8,#e9eff5 60%,#e3ecf5)}.practice-map{display:flex;gap:35px;margin:35px 0 55px;padding:22px 0;border-top:1px solid #c3d3e244;border-bottom:1px solid #c3d3e244}.practice-map a{display:flex;gap:16px;align-items:center;color:#6b8ba7;font-size:15px;flex:1}.practice-map a>span{color:#a2b4c4;font-size:10px}
.practice-case{margin-bottom:85px;scroll-margin-top:120px}.case-heading{display:grid;grid-template-columns:54px 1fr auto;gap:22px;align-items:start;margin-bottom:28px}.case-number{font-size:37px;line-height:1.2;font-weight:300;color:#a6bbce;padding-top:5px;font-variant-numeric:tabular-nums}.case-heading h3{font-size:clamp(26px,3.4vw,42px);font-weight:500;line-height:1.4;letter-spacing:-.04em;color:#2b4258}.case-heading p{font-size:14px;color:#87a0b5;margin-top:15px}.case-tool{font-size:10px;color:#86a2b9;background:#dce8f369;border:1px solid #f9fcff;border-radius:18px;padding:11px 15px;white-space:nowrap;margin-top:11px}
.case-visual{position:relative;display:grid;grid-template-columns:.85fr 65px 1.2fr;gap:0;align-items:center;padding:34px;background:radial-gradient(ellipse at 45% 60%,#dce7f2,#f1f5f9 70%);border-radius:30px;border:1px solid #fff;box-shadow:0 20px 65px #627e9716;overflow:hidden}
.paper-ribbon{display:flex;align-items:center;gap:10px;color:#87a3bb;font-size:10px;margin-bottom:23px}.paper-ribbon b{height:23px;width:23px;background:#739ab8;color:#f3f8fd;display:grid;place-items:center;border-radius:6px;font-size:13px;font-weight:500}.word-paper{padding:28px 28px 34px;background:#ffffffe6;border:1px solid #fff;border-radius:12px;box-shadow:0 20px 35px #6988a921;transform:perspective(1000px) rotateY(4deg) rotateX(2deg);min-height:350px}.word-paper h4{font-size:24px;font-weight:500;color:#41617e;margin:0 0 22px}.word-paragraph{margin-top:22px}.word-paragraph strong{font-size:12px;font-weight:500;color:#6c8aa4}.word-paragraph p{font-size:11px;line-height:1.9;color:#91a4b5;margin-top:9px}
.conversion-axis{display:flex;flex-direction:column;align-items:center;gap:13px;padding:0 10px;color:#90a8bd;font-size:9px}.conversion-axis i{height:30px;width:1px;background:#8aacc95c}.conversion-axis:after{content:'→';font-size:22px;color:#92aec6}.deck-workbench{border:1px solid #d9e6f2;border-radius:15px;background:#f9fbfd;box-shadow:10px 22px 40px #496f931f;transform:perspective(1400px) rotateY(-4deg);overflow:hidden;min-width:0}.artifact-toolbar{display:flex;gap:15px;justify-content:space-between;align-items:center;padding:15px 17px;border-bottom:1px solid #ccdae849;background:#e6eef66b;color:#90a9bd;font-size:9px}.artifact-toolbar b{font-weight:400;font-size:8px;color:#6e9a8d;background:#d7ebe040;padding:5px 8px;border-radius:8px;white-space:nowrap}
#deck-preview{padding:15px}.preview-slide{aspect-ratio:16/9;position:relative;padding:27px 30px;background:radial-gradient(ellipse at 90% 10%,#91b4cd55,transparent 60%),linear-gradient(135deg,#25445d,#506d85);border-radius:6px;color:#edf5fb;overflow:hidden;display:flex;flex-direction:column;justify-content:center}.preview-slide>span{font-size:8px;color:#a8bfd2;letter-spacing:.07em;margin-bottom:17px}.preview-slide h4{font-size:31px;line-height:1.3;font-weight:500;letter-spacing:-.04em;margin:0}.preview-slide>p{font-size:10px;color:#acc3d7;margin-top:12px}.slide-items{display:flex;gap:10px;margin-top:28px;align-items:start}.slide-items>div{flex:1;min-width:0;font-size:9px;color:#cfdfed;line-height:1.7}.slide-items i{display:block;width:24px;height:2px;border-radius:3px;background:#a9c8df;margin-bottom:11px}.slide-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #e6f2fc22;margin-top:auto;padding-top:11px;color:#97b4cc;font-size:7px}
.deck-thumbnails{display:grid;grid-template-columns:repeat(6,1fr);gap:5px;padding:0 15px 17px}.deck-thumbnails button{background:#e7eef564;border:1px solid #c5d7e55e;border-radius:6px;padding:9px 3px;font-size:6px;color:#90a7bb;text-align:center;line-height:1.7}.deck-thumbnails span{display:block;font-size:8px;margin-bottom:4px;color:#7c9cb7}.deck-thumbnails [aria-pressed=true]{background:#d9e6f2;border-color:#80a5c5;color:#4d7798}.deck-thumbnails [aria-pressed=true] span{color:#537fa1}
.case-file-line{display:flex;align-items:center;justify-content:center;gap:45px;margin:27px 0 28px;color:#7895ad}.case-file-line>div{display:flex;gap:14px;align-items:center}.case-file-line span{font-size:9px;color:#9bb0c1}.case-file-line strong{font-size:12px;font-weight:400;color:#7190a8}.case-file-line>i{font-style:normal;color:#adc0d0}
.case-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:25px;margin:22px 0 25px}.case-steps>div{display:flex;gap:13px;align-items:center;border-top:1px solid #b1c8db70;padding-top:19px;transition:color .4s,border-color .4s;color:#8fa8bc}.case-steps span{font-size:9px}.case-steps strong{font-size:13px;font-weight:400;line-height:1.7}.case-steps .active{border-color:#6691b4;color:#4f7695}.case-steps .complete{border-color:#8cb5aa;color:#729c91}
.case-actions{display:flex;gap:25px;align-items:center;flex-wrap:wrap;margin:30px 0 26px}.case-actions .button{font-size:11px;padding:13px 21px;gap:14px}.case-actions .button>span{font-size:13px}.case-copy{font-size:12px;color:#688ba8;background:transparent;padding:10px 0}.case-actions>span{font-size:10px;color:#99afc1;margin-left:auto}.case-details{border-top:1px solid #b8cee158;padding-top:20px}.case-details summary{list-style:none;display:flex;justify-content:space-between;cursor:pointer;color:#7997b1;font-size:12px}.case-details summary>span{font-size:18px}.case-details[open] summary>span{transform:rotate(45deg)}.case-preparation{margin:25px 0;display:grid;gap:10px}.case-preparation p{font-size:12px;color:#819db3;line-height:1.85}.case-preparation b{font-weight:500;color:#547b9b;margin-right:15px}.case-details pre{padding:25px 30px;background:#f5f9fd9c;border:1px solid #d3e1ef;border-radius:17px;font-family:inherit;white-space:pre-wrap;font-size:13px;line-height:1.95;color:#6c8ba6;overflow-wrap:anywhere;margin:0}
[data-practice=article-archive] .case-visual{grid-template-columns:.7fr 1.4fr;gap:30px}.article-query{padding:5px 0 5px 10px}.article-query h4{font-size:27px;line-height:1.5;font-weight:500;color:#557894;letter-spacing:-.04em;margin:0 0 26px}.article-query dl{margin:0;display:grid;gap:15px;font-size:11px}.article-query dl>div{display:grid;grid-template-columns:60px 1fr;gap:15px}.article-query dt{color:#a1b3c3}.article-query dd{color:#708da5;margin:0}.archive-tree{display:grid;gap:9px;margin-top:25px;padding:20px 20px 0;border-top:1px solid #d0dde845;color:#88a3ba;font-family:Consolas,'SFMono-Regular',monospace;font-size:10px;line-height:1.5}.archive-tree b{font-weight:500;color:#6a8ba7;font-size:12px}.archive-tree em{font-style:normal;padding-left:30px;color:#9ab0c3}.archive-workbench{border-radius:15px;overflow:hidden;border:1px solid #d5e3ef;box-shadow:12px 20px 40px #5c7fa125;background:#fff;transform:perspective(1200px) rotateY(-3deg)}.archive-spread{display:grid;grid-template-columns:1.15fr 1fr;min-height:330px}.archived-article{padding:25px 22px;border-right:1px solid #cfdeeb73}.archived-article>span{font-size:8px;color:#98b0c4}.archived-article h4{font-size:18px;line-height:1.6;font-weight:500;color:#4a6e8b;margin:15px 0 18px;text-wrap:balance}.article-illustration{height:140px;border-radius:8px;background:radial-gradient(ellipse at 70% 60%,#d0e4f0,#edf4f9);overflow:hidden;border:1px solid #d7e5f0}.article-illustration svg{width:100%;height:100%}.article-text-lines{display:grid;gap:8px;margin-top:20px}.article-text-lines i{height:3px;border-radius:4px;background:#dee8f0}.article-text-lines i:nth-child(2){width:90%}.article-text-lines i:nth-child(3){width:76%}.archived-article>p{font-size:8px;color:#9bb1c4;margin-top:15px}
.archive-index{padding:27px 22px;background:#f7fafc}.archive-index>span{font-size:9px;color:#88a7bf}.archive-index h4{margin:20px 0 25px;font-size:20px;font-weight:500;color:#698ba6}.archive-index>div:not(.archive-format){padding:12px 0;border-bottom:1px solid #c5d7e64f}.archive-index>div>span{display:block;color:#a3b7c8;font-size:7px;margin-bottom:7px}.archive-index strong{font-size:9px;color:#829eb5;font-weight:400;line-height:1.7}.archive-format{display:flex;gap:7px;flex-wrap:wrap;margin-top:25px}.archive-format b{font-size:7px;font-weight:400;color:#749ab6;background:#e2edf6;padding:6px 8px;border-radius:7px}
[data-practice=chat-plan] .case-visual{grid-template-columns:1fr 1.25fr;gap:40px;padding:35px 40px}.chat-source{padding:10px 0}.message-card{background:#fcfefee6;border:1px solid #fff;border-radius:15px;padding:19px 20px;margin-bottom:14px;box-shadow:0 10px 20px #6f8aa112}.message-card>span{display:block;font-size:8px;color:#9bb1c4;margin-bottom:11px}.message-card>p{font-size:13px;line-height:1.9;color:#7290a7}.update-message{background:#e3f0edcf;border-color:#f4fffb}.update-message>p{color:#6b958b}.update-message b{display:block;font-size:8px;font-weight:400;color:#94b5ab;margin-top:11px}.others-message{opacity:.6}.others-message>p{font-size:11px}.chat-scope{margin:24px 0 0;font-size:9px;color:#91a9bc}
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.course-page .agent-viewport canvas{touch-action:pan-y}