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table{font-size:12px}.report-paper{background:white;border:1px solid var(--border);padding:24px;border-radius:12px}.report-paper h2{margin-bottom:8px}.report-paper h3{margin-top:20px;margin-bottom:8px}.report-paper h4{margin:10px 0 6px}.report-paper .white-space{white-space:pre-wrap;overflow-wrap:anywhere}.report-paper .refline{margin-top:7px}.report-actions{margin:12px 0}.capture{display:flex;justify-content:space-between;gap:9px;align-items:end;flex-wrap:wrap}.capture .field{flex:1 1 150px}.toast{position:fixed;right:18px;bottom:18px;z-index:12;background:#16394c;color:white;border:1px solid #284d5f;max-width:min(420px,calc(100% - 36px));border-radius:12px;padding:12px 16px;font-size:14px;box-shadow:0 6px 22px #16394c3a}.toast.bad{background:#7d3438;border-color:#a4595c}.toast:focus{outline:2px solid #c6dfe7}.dialog-title{font-size:20px}.dialog-note{margin:10px 0;color:var(--muted)}dialog{border:1px solid var(--border);border-radius:15px;max-width:min(90vw,760px);width:100%;max-height:88vh;overflow:auto;padding:20px;color:var(--ink);background:white;box-shadow:0 16px 60px #0c2a3b3d}dialog::backdrop{background:#1733447f}dialog .award-zoom{max-height:65vh;margin:auto;object-fit:contain}dialog .doc-frame{width:100%;min-height:60vh;border:1px solid var(--border);border-radius:8px;margin-top:10px}.award-image{width:100%;height:170px;object-fit:contain;background:#f7fafb;border:1px solid var(--border);border-radius:9px;margin-bottom:9px}.award-image.rot{height:170px;transform:rotate(-90deg);border:0}.award-slot{overflow:hidden;border-radius:9px;background:#f7fafb;margin-bottom:8px}.team-index{display:grid;place-items:center;border-radius:11px;width:44px;height:44px;color:#175e66;background:linear-gradient(155deg,#e1f4ed,#e9f2fa);font-weight:750;font-size:19px}.empty{padding:30px;text-align:center;background:#fff;border:1px dashed #c5d8e1;border-radius:13px}.empty .flow{justify-content:center;margin-top:13px}
@keyframes current{to{stroke-dashoffset:-26}}
@media(max-width:1180px){.workbench{grid-template-columns:190px minmax(0,1fr)}.tutor-rail{position:static;grid-column:2}.nav>a,.nav summary{padding-inline:7px}.bar .wrap{gap:10px}}
@media(max-width:1000px){.bar .wrap{flex-wrap:wrap;gap:8px;padding-block:10px}.nav{order:3;width:100%;border-top:1px solid #e6eef1;padding-top:6px}.nav-popup{left:0;right:auto}.hero-grid{gap:12px}.grid4{grid-template-columns:repeat(2,minmax(0,1fr))}.report-layout{grid-template-columns:1fr}}
@media(max-width:750px){.wrap{width:calc(100% - 32px)}.hero-grid,.twocol,.grid3,.module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-grid,.twocol{grid-template-columns:1fr}.hero{padding:28px 0 23px}.hero h1{font-size:clamp(33px,8vw,47px)}.hero-graphic img{max-height:310px}.section{padding:32px 0}.section-head{align-items:flex-start;flex-direction:column;gap:10px}.stats{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:8px}.stat:nth-child(3){border-left:0}.stat:nth-child(n+3){border-top:1px solid var(--border)}.stat{padding:11px 14px}.stat b{font-size:23px}.workbench{grid-template-columns:1fr}.steps-rail,.tutor-rail{grid-column:auto;position:static}.steps-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.step-hero h2{font-size:23px}.topline .eyeline{display:none}.roadmap article{padding:13px}.roadmap .hours{font-size:22px}.roadmap h3{font-size:16px}.report-paper{padding:14px}}
@media(max-width:490px){.wrap{width:calc(100% - 24px)}.bar .wrap{min-height:62px}.bar .header-cta{display:none}.mobile-menu{display:inline-flex}.nav{display:none}.nav.open{display:flex}.nav>a,.nav summary{font-size:12px}.grid2,.grid3,.grid4,.module-grid,.roadmap{grid-template-columns:1fr}.roadmap article:not(:last-child):after{content:"↓";right:16px;top:auto;bottom:-17px}.card,.work-panel{padding:15px}.rail-card{padding:0}.hero h1{font-size:35px}.hero-lead{font-size:15px}.hero .btn{width:100%}.hero-graphic img{max-height:255px}.controls,.controls.two{grid-template-columns:1fr}.meters{gap:4px}.meter{padding:7px 6px}.meter small{font-size:10px}.meter strong{font-size:16px}.meter strong em{font-size:9px}.wiring{grid-template-columns:minmax(0,1fr) 42px minmax(0,1fr);padding:6px}.device{padding:6px 4px}.term-grid{gap:4px}.terminal{min-width:34px;padding-inline:6px}.topline .badge{font-size:10px}.metas{grid-template-columns:83px minmax(0,1fr)}.metas dt,.metas dd{font-size:13px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}
@media(max-width:1000px){.report-editor{grid-row:1}}
@media print{body{background:white;font-size:12px}.wrap{width:100%;max-width:none}#header,#footer,.skip-link,#notice,dialog,.no-print,.work-title,.subhero,.report-actions,.report-editor{display:none!important}.report-layout{display:block}.report-paper{border:0;padding:0}.report-paper h3,.report-paper h4{break-after:avoid}.report-paper .chart,.report-paper tr{break-inside:avoid}.report-paper .table-wrap{overflow:visible}}

.workbench.grid-workbench{grid-template-columns:minmax(220px,275px) minmax(0,1fr);gap:20px}
.grid-side,.grid-main,.grid-data{min-width:0}.grid-step-nav{display:grid;gap:7px}.grid-step-nav .btn{text-align:left;justify-content:flex-start;white-space:normal}.grid-step-nav .btn[aria-current]{box-shadow:0 0 0 2px #d7eee7}.grid-side .progress span{display:block;height:100%;background:#4ba991;transition:width .2s ease}.grid-side h2{font-size:20px}
.grid-fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,170px),1fr));gap:12px}.grid-fields .field{min-width:0}.grid-fields select{width:100%}.grid-question{min-width:0;border:1px solid #dae8ec;border-radius:11px;margin:0;padding:12px 13px;background:#fcfefe}.grid-question legend{font-weight:650;padding:0 5px}.grid-question input,.grid-main .choice input{margin-top:.3em}.grid-question .choice:not(:last-child){margin-bottom:5px}.grid-controls{align-items:flex-start}.grid-controls .btn{white-space:normal;text-align:left}.grid-state{border-top:1px solid #e3eef0;padding-top:12px}.grid-state h3{font-size:15px;color:#35556a}.grid-meters{grid-template-columns:repeat(auto-fit,minmax(min(100%,118px),1fr));gap:8px}.grid-meters .meter{min-width:0}.grid-meters .meter strong{font-size:clamp(15px,1.6vw,20px);overflow-wrap:anywhere}.grid-meters .meter em{margin-left:4px}.grid-record>.inner{padding-top:10px}.grid-data .table-wrap{max-width:100%}.grid-log{margin:0;padding:0;list-style:none}.grid-log .timeline{display:grid;grid-template-columns:auto minmax(70px,115px) minmax(0,1fr);align-items:start;gap:8px}.grid-log time{white-space:nowrap}
.grid-topology{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:8px 0 12px}.grid-topology .node{min-width:0;position:relative;padding:9px;border:1px solid #dce8ed;border-radius:10px;background:#f7fafb;text-align:center;font-size:13px}.grid-topology .node.on{background:#eaf7f1;border-color:#b9dfd2;color:#145e52}.grid-topology .node:not(:last-child)::after{content:"";position:absolute;right:-11px;top:50%;width:10px;height:2px;background:#b4c9d2}.grid-topology small{display:block}
@media(max-width:850px){.workbench.grid-workbench{grid-template-columns:minmax(180px,225px) minmax(0,1fr);gap:13px}}
@media(max-width:690px){.workbench.grid-workbench{grid-template-columns:1fr}.grid-main{order:-1}.grid-topology{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-topology .node:nth-child(2)::after{display:none}.grid-log .timeline{grid-template-columns:auto minmax(0,1fr)}.grid-log .timeline span:last-child{grid-column:1/-1}}

/* Shared section header and subnavigation */
:root{--selection:#3159a9;--selection-bg:#eef3fc}
.teaching-bar .wrap{min-height:74px;gap:20px}.teaching-bar .brand-mark{background:linear-gradient(145deg,#276f81,#328e7e)}
.teaching-primary{display:flex;gap:clamp(12px,2vw,30px);align-items:center}
.teaching-primary a{color:#445a6d;position:relative;display:block;padding:22px 5px 20px;white-space:nowrap;font-weight:680;font-size:14px}
.teaching-primary a:hover,.teaching-primary a[aria-current]{color:var(--selection)}
.teaching-primary a[aria-current]::after{content:"";height:3px;position:absolute;bottom:-4px;inset-inline:5px;background:var(--selection);border-radius:3px 3px 0 0}
.section-shell{background:#fff;border-bottom:1px solid var(--border)}
.section-shell-head{padding-top:22px}.section-shell-head h1{font-size:clamp(27px,3vw,37px);padding-bottom:13px;position:relative;letter-spacing:-.035em}
.section-shell-head h1::after{content:"";position:absolute;height:4px;border-radius:2px 2px 0 0;background:var(--selection);inset-inline:0;bottom:-1px}
.section-tab-bg{border-top:1px solid #e7edf1}
.section-tabs{display:flex;align-items:center;overflow-x:auto;scrollbar-width:thin;scrollbar-color:#b7c9de transparent;padding-block:10px;min-height:54px}
.section-tabs>a{flex:none;white-space:nowrap;font-size:clamp(13px,1.28vw,15px);color:#4a6175;font-weight:630;line-height:1.15;min-height:34px;display:inline-flex;align-items:center;padding:0 14px;position:relative}
.section-tabs>a:first-child{padding-left:0}.section-tabs>a+a::before{content:"";width:1px;height:15px;background:#d7e1eb;position:absolute;left:0}
.section-tabs>a[aria-current],.section-tabs>a:hover{color:var(--selection)}.section-tabs>a[aria-current]{font-weight:770}.section-tabs>a:focus-visible{outline-offset:-3px}
.teaching-footer{background:#edf4f8}.teaching-footer a{color:#385e7c}

/* Project hero combines visual, film entries and academic profile. */
.project-hero{padding:30px 0 26px;background:radial-gradient(ellipse at 94% 22%,#def1ef 0,transparent 56%),linear-gradient(120deg,#f8fcfd,#edf4fa)}
.project-hero .hero-grid{gap:clamp(17px,3vw,40px);grid-template-columns:1.06fr 1fr}
.project-copy h2{font-size:clamp(30px,4.4vw,57px);line-height:1.17;letter-spacing:-.065em;margin:10px 0 17px}
.project-copy h2 span{color:var(--teal)}.project-copy h2 small{display:block;color:#3d596d;font-size:.53em;letter-spacing:.01em;font-weight:720;margin-top:9px}
.project-copy .flow{margin-top:20px}.project-visual{display:flex;flex-direction:column;min-width:0}
.project-videos{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;z-index:1}
.video-entry{appearance:none;display:flex;align-items:center;min-width:0;text-align:left;gap:8px;padding:7px;border:1px solid #cddfe9;border-radius:10px;background:#ffffffec;color:#29495f;transition:background .16s,border-color .16s}
.video-entry:hover{border-color:#91b6cc;background:white}.video-entry-image{position:relative;flex:none;width:52px;height:36px;overflow:hidden;border-radius:5px;background:#dcebee}
.video-entry-image img{width:100%;height:100%;object-fit:cover}.video-entry-image span{position:absolute;inset:0;display:grid;place-items:center;background:#16344545;color:white}.video-entry-image .icon{width:19px;height:19px}
.video-entry b,.video-entry small{display:block;line-height:1.35}.video-entry b{font-size:13px}.video-entry small{color:#536e82;font-size:11px;margin-top:3px}.video-entry>.icon{margin-left:auto;width:13px;color:#547f9b}
.project-visual .hero-graphic img{width:100%;height:auto;max-height:335px;object-fit:contain}.project-details .card h3{margin-bottom:12px}.project-details .text-link{margin-top:9px}
.teacher{display:flex;flex-direction:column;gap:14px}.teacher-avatar{flex:none}.teacher-role{font-size:11px;font-weight:700;color:var(--teal)}.teacher h3{margin:3px 0 5px;font-size:20px}.teacher h3 small{font-size:12px;color:#546c80;white-space:nowrap;margin-left:6px}.teacher .fine{line-height:1.45}.teacher p+p{margin:0}.teacher .teacher-courses{margin-top:auto;padding-top:11px;border-top:1px solid var(--border);font-size:13px;color:#425e73}.teacher-courses b{display:block;color:var(--ink);font-size:12px;margin-bottom:3px}

/* Teaching copy, technical figures and step-by-step preparation */
.read-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(230px,290px);gap:22px;align-items:start}.read-layout>*,.read-aside{min-width:0}.read-aside .card{box-shadow:none}.read-aside .btn{justify-self:start}
.teaching-copy{padding:clamp(18px,3vw,36px);font-size:15px;line-height:1.86;color:#304c61}.teaching-copy h2{font-size:clamp(23px,3vw,32px);margin-bottom:18px;color:var(--ink)}
.teaching-copy h3{font-size:18px;line-height:1.45;margin:22px 0 9px;color:var(--ink)}.teaching-copy p+p{margin-top:13px}
.teaching-copy .app-table{margin:17px 0}.app-table table caption{text-align:left;padding:9px 12px;background:#f9fbfd;font-weight:720;color:#344e64}.app-table th{white-space:normal;min-width:65px}.app-table td{min-width:60px}.app-table th:nth-child(3){min-width:108px}.app-table td{vertical-align:middle}
.app-table[aria-label*="25 步"] table{min-width:850px}.app-table[aria-label*="25 步"] th:nth-child(5){min-width:290px}.knowledge-list{columns:2;column-gap:28px}.knowledge-list li{break-inside:avoid}.formula-panel{background:#f3f8fc;border:1px solid #dce8f1;border-radius:9px;overflow:auto;padding:8px 11px;margin:13px 0}.formula-panel p{display:flex;justify-content:center;gap:12px;align-items:center;min-width:max-content}.formula-panel math{font-size:1.06em}
.source-figure{margin:0;min-width:0;border:1px solid #dce8ef;border-radius:10px;background:#f7fafc;overflow:hidden}.teaching-copy .source-figure{margin:16px 0 21px}.source-figure button{display:block;appearance:none;border:0;padding:0;background:white;width:100%;cursor:zoom-in}.source-figure button:focus-visible{outline-offset:-4px}.source-figure img{width:100%;height:auto;max-height:560px;object-fit:contain}.source-figure figcaption{font-size:13px;padding:7px 11px;line-height:1.5;color:#476377;border-top:1px solid #e0eaf0}.teaching-zoom{width:auto;margin:12px auto 0;max-height:74vh;object-fit:contain}
.lesson-heading{padding:12px 0 2px}.lesson-heading h2{margin-top:10px}.lesson-heading .text-link,.lesson-heading .btn{margin-top:10px}.lesson-heading .subtext{max-width:84ch}.lab-read{grid-template-columns:minmax(0,1fr) minmax(245px,290px)}.lab-read .metas{grid-template-columns:110px minmax(0,1fr)}.lab-read .metas dd{font-weight:500}.lab-read .metas dt{font-weight:680}
.illustrated-step>summary{min-height:47px}.step-number{display:inline-grid;place-items:center;width:27px;height:27px;border-radius:7px;background:var(--selection-bg);color:var(--selection);font-size:12px;font-weight:750;margin-inline:5px 4px}
.step-explanation{display:grid;gap:12px}.step-figures{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,210px),1fr));gap:10px}.step-figures img{aspect-ratio:16/10;max-height:275px}.step-figures .source-figure:only-child img{max-height:295px}.study-gate{border-color:#bddad9;background:linear-gradient(120deg,#f6fbfa,#fff)}
.lab-flow{list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 8px;padding:0;margin:0}.lab-flow li{margin:0;display:flex;align-items:center;gap:5px;font-size:12px;min-width:0;color:#3b5a6f}.lab-flow li span{display:inline-grid;place-items:center;min-width:21px;height:21px;border-radius:5px;background:var(--selection-bg);color:var(--selection);font-size:10px;font-weight:720}.lab-flow li:nth-child(5) span,.lab-flow li:nth-child(8) span{background:#ececfa;color:var(--violet)}
.resources-grid .card .flow{margin-top:auto}.resources-grid .card h3{line-height:1.4}.report-layout{grid-template-columns:minmax(0,1fr) minmax(240px,315px)}.report-paper{min-width:0}.report-paper h3[data-report-section]{border-top:1px solid var(--border);padding-top:13px}.report-paper .result-tables{margin-top:10px}.report-editor{position:sticky;top:14px}.report-actions a{white-space:nowrap}
@media(max-width:960px){.report-layout{grid-template-columns:1fr}.report-editor{position:static}.read-layout,.lab-read{grid-template-columns:minmax(0,1fr) minmax(210px,230px)}.project-videos{gap:6px}.video-entry{gap:5px}.video-entry-image{width:38px}.video-entry>.icon{display:none}}
@media(max-width:735px){.teaching-bar .wrap{gap:5px;justify-content:flex-start}.teaching-primary{width:100%;gap:15px;overflow-x:auto;scrollbar-width:thin}.teaching-primary a{padding:8px 3px;font-size:13px}.teaching-primary a[aria-current]::after{bottom:0;inset-inline:3px}.section-shell-head{padding-top:14px}.section-tabs{min-height:44px;padding-block:4px}.section-tabs>a{padding-inline:10px}.project-hero .hero-grid,.read-layout,.lab-read{grid-template-columns:1fr}.project-hero .hero-grid{gap:15px}.project-visual .hero-graphic img{max-height:270px}.project-videos{max-width:none}.project-copy .btn{width:auto}.read-aside{grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr));align-items:start}.knowledge-list{columns:1}}
@media(max-width:400px){.teaching-primary{gap:9px}.teaching-primary a{font-size:12px}.project-hero .hero-grid{gap:11px}.project-videos{grid-template-columns:1fr}.project-visual .hero-graphic img{max-height:220px}.lab-read .metas{grid-template-columns:81px minmax(0,1fr)}}
@media print{.report-layout{display:block}.section-shell{display:none}}
dialog video{width:100%;max-height:67vh;object-fit:contain;background:#122634;border-radius:8px}