/* ETV / Dimensional Lab — chart-inspired architecture, not invented metrics. */
:root{--ink:#102f35;--dark:#092b32;--cream:#f4f4ed;--paper:#fffef8;--line:#b7ccc5;--muted:#4d6669;--mint:#b3ddcc;--coral:#ee7053;--gold:#efbb4b;--depth-teal:#6c9993;--depth-sand:#d6d5c5;--dimension-font:"Helvetica Neue",Arial,system-ui,sans-serif}
html{scroll-padding-top:24px}
body{background-color:var(--cream);background-image:radial-gradient(ellipse at 95% 0,#e1eee5 0,transparent 38%),linear-gradient(#174e4606 1px,transparent 1px),linear-gradient(90deg,#174e4606 1px,transparent 1px);background-size:auto,48px 48px,48px 48px;color:var(--ink);overflow-wrap:anywhere}
.wrap{max-width:1400px;padding-left:clamp(20px,4vw,64px);padding-right:clamp(20px,4vw,64px)}
.site-head{position:relative;background:#0b3037;box-shadow:0 5px 0 #6d9991,0 13px 30px #173f3b15;z-index:2}
.site-head:after{content:"";display:block;height:2px;background:linear-gradient(90deg,#f0bd4d 0 33.3%,#e97d60 33.3% 66.6%,#8bc7b0 66.6%);box-shadow:none}
.site-head .wrap{min-height:90px;gap:20px}
.site-head .logo{font-size:12px;font-weight:800;letter-spacing:.1em;max-width:470px;line-height:1.45}
.bolt{width:22px;height:26px;background:var(--gold)!important;filter:drop-shadow(3px 3px 0 #b5812f)}
.site-head nav{gap:24px}.site-head nav a{font-size:13px;letter-spacing:.02em;font-weight:600;color:#d0e1db}
.site-head nav a[aria-current=page]{border-color:var(--gold)}
.micro,.eyebrow{font:700 11px/1.6 var(--dimension-font);letter-spacing:.16em;color:#7b4534}
.hero{position:relative;padding:74px 0 80px;grid-template-columns:minmax(0,1fr) minmax(0,1.03fr);gap:30px;align-items:center}
.hero h1,.page-lead h1{font-family:var(--dimension-font);font-weight:700;letter-spacing:-.065em;line-height:1.04}
.hero h1{font-size:clamp(48px,5.9vw,84px);margin:20px 0 24px}
.hero p{font-size:17px;line-height:1.75;max-width:510px;color:var(--muted)}
.hero>.hero-copy{position:relative;z-index:1;min-width:0}
.hero .actions{gap:16px;margin-top:34px}
.hero .button{font-size:13px;padding:14px 19px}
.button{border-radius:4px;border:1px solid #123c40;background:linear-gradient(135deg,#16474c,#0c3036);box-shadow:0 5px 0 #7eaaa1,0 9px 12px #12383210;transform:translateY(0);transition:transform .18s,box-shadow .18s}
.button:hover{background:#16474c;transform:translateY(-2px);box-shadow:0 7px 0 #7eaaa1,0 12px 20px #12383219}
.button:active{transform:translateY(3px);box-shadow:0 2px 0 #7eaaa1}
.button.ghost{background:#fffdf5;border-color:#a1b9b0;box-shadow:0 5px 0 #d2d5c6}
.button.ghost:hover{background:#edf2e9;box-shadow:0 7px 0 #c6cbbd}
button:disabled,button:disabled:hover{transform:none;box-shadow:none;cursor:not-allowed;opacity:.65}
.notice{position:relative;margin-bottom:36px;background:#eef1e7;border:1px solid #c5d3c7;border-left:5px solid #d77c58;border-radius:3px;box-shadow:0 5px 0 #d9dfd1;font-size:13px;padding:15px 20px;line-height:1.65}
main.wrap>.notice:first-child{margin-top:29px;margin-bottom:0}
.notice a{text-decoration:underline;text-underline-offset:3px}
.notice strong{color:#743c2c}
.model-sculpture{position:relative;margin:0;min-width:0;padding:20px 0 0}
.model-sculpture svg{display:block;width:100%;height:auto;overflow:visible;isolation:isolate}
.model-sculpture .sector{transition:transform .25s ease;transform-origin:center;cursor:pointer}
.model-sculpture .sector:hover,.model-sculpture .sector:focus-visible{transform:translateY(-10px)}
.model-sculpture .sector:focus-visible{outline:3px solid #144d61;outline-offset:5px}
.model-sculpture .sector:hover .top,.model-sculpture .sector:focus-visible .top{stroke:#fff;stroke-width:3}
.sculpture-index{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0 10px}
.sculpture-index a{display:flex;align-items:center;gap:9px;font-size:12px;min-height:44px;border-bottom:1px solid #b6ccc3;padding:8px 0}
.sculpture-index i{display:block;width:12px;height:12px;border-radius:50%;background:#62a998;box-shadow:0 3px 0 #245d56;flex:none}
.sculpture-index a:nth-child(2) i{background:#ed876a;box-shadow:0 3px 0 #a94530}
.sculpture-index a:nth-child(3) i{background:#efbc50;box-shadow:0 3px 0 #ab7926}
.model-sculpture figcaption{font-size:12px;letter-spacing:.03em;color:#506b60;margin:14px 10px 0;text-align:right}
.section{border-top:1px solid #bccdc4;padding:64px 0}
.section-head{gap:30px;margin-bottom:32px}
.section h2,.section-head h2,.feature-copy h2,.panel h2,.page-lead h2{font-family:var(--dimension-font);font-weight:650;letter-spacing:-.05em}
.section h2{font-size:clamp(32px,4vw,52px);line-height:1.08}
.section h2:after{display:none}
.section-head p{font-size:14px;line-height:1.75;max-width:430px}
.grid3{gap:24px}
.tile,.panel,.course-item,.skill{position:relative;overflow:visible;background:linear-gradient(135deg,#fffef8,#f6faf3);border:1px solid #bfd0c4;border-radius:8px;box-shadow:0 8px 0 #d0dbcf,0 9px 0 #b4c6bb,0 20px 28px #143e3210;transition:transform .2s ease,box-shadow .2s ease}
.tile{padding:30px;min-height:320px;border-top:5px solid #63a38e}
.tile:nth-child(2){border-top-color:#e97c5b;box-shadow:0 8px 0 #e3c9b8,0 9px 0 #d0af9a,0 20px 28px #143e3210}
.tile:nth-child(3){border-top-color:#dcad44;box-shadow:0 8px 0 #dfd5b6,0 9px 0 #c7ba95,0 20px 28px #143e3210}
.tile:before,.panel:before,.course-item:before{display:none}
.tile:hover,.panel:hover,.course-item:hover{transform:translateY(-4px);border-color:#8eafa0;box-shadow:0 12px 0 #ccd8ca,0 13px 0 #adc1b4,0 25px 30px #143e3218}
.tile .num{font-size:10px;letter-spacing:.14em;color:#426a5c;display:flex;align-items:center;gap:12px}
.tile .num:before{content:"";width:26px;height:26px;border-radius:50%;background:radial-gradient(circle at 30% 25%,#c4ead6,#66ac92);box-shadow:0 4px 0 #387261;flex:none}
.tile:nth-child(2) .num:before{background:radial-gradient(circle at 30% 25%,#ffd3af,#eb815f);box-shadow:0 4px 0 #ad4f37}
.tile:nth-child(3) .num:before{background:radial-gradient(circle at 30% 25%,#fff1bc,#e4b040);box-shadow:0 4px 0 #aa7b27}
.tile .num:after{display:none}
.tile h3{font:650 25px/1.18 var(--dimension-font);letter-spacing:-.04em;margin-top:32px}
.tile p{font-size:14px;line-height:1.75}.tile a{font-size:12px;color:#225e53;padding-top:28px}
.feature{gap:24px;align-items:stretch}
.feature-copy{border:1px solid #a6c9b4;border-radius:8px;background:linear-gradient(125deg,#c4e3cc,#e0edce);box-shadow:0 9px 0 #9fbea5,0 10px 0 #7eaa8a;min-height:390px}
.feature-copy h2{font-size:clamp(37px,5vw,65px);line-height:1.06}
.feature-copy:after{width:240px;height:240px;right:-90px;top:-120px;border:22px solid #91b99b55;box-shadow:0 16px 0 #648b7233}
.feature-copy p{font-size:15px;line-height:1.7}
.feature-side{border-radius:8px;background:linear-gradient(135deg,#143e44,#0b2f37);box-shadow:0 9px 0 #6e9690,0 10px 0 #547970;padding:42px}
.feature-side li{padding:9px 0;border-bottom:1px solid #9fd3bb30;line-height:1.7}
.feature-side p{font-size:12px;color:#d3e1d9}
.progress{gap:20px;align-items:stretch;padding-bottom:8px}
.step{position:relative;min-height:155px;border:1px solid #b7caba;border-top:5px solid #68a28e;border-radius:6px;background:#ecf2e4;box-shadow:0 7px 0 #ccd9c2,0 8px 0 #aebfa5;padding:24px}
.step:nth-child(2){border-top-color:#ddae49}.step:nth-child(3){border-top-color:#dc8265}.step:nth-child(4){border-top-color:#608d92}
.step strong{font:650 34px/1.1 var(--dimension-font);color:#235f56;margin-bottom:20px;letter-spacing:-.06em}
.step span{font-size:12px;line-height:1.6;color:#405b53}
.footer,footer{position:relative;background:#0c3037;color:#d0dfd7;border-top:7px solid #719d91;margin-top:80px;padding-top:35px;padding-bottom:35px}
.footer strong{display:block;margin-bottom:5px}
.page-lead{position:relative;padding-top:70px;padding-bottom:52px;border-bottom:1px solid #c2d2c8;margin-bottom:36px}
.page-lead h1{font-size:clamp(43px,6vw,76px);max-width:950px;margin:15px 0 26px}
.page-lead p{font-size:17px;line-height:1.75;color:var(--muted)}
.depth-skyline{position:absolute;right:12px;top:92px;width:146px;height:145px;display:flex;align-items:flex-end;gap:15px;transform:skewY(-8deg);pointer-events:none}
.depth-skyline span{position:relative;display:block;width:31px;height:90px;background:linear-gradient(90deg,#91c7ad,#71ae93);box-shadow:12px 12px 0 #173f2920}
.depth-skyline span:before{content:"";position:absolute;left:0;right:0;height:12px;top:-12px;background:#c1e2c9;transform:skewX(42deg);transform-origin:bottom left}
.depth-skyline span:after{content:"";position:absolute;left:100%;top:0;width:11px;height:100%;background:#36735f;transform:skewY(48deg);transform-origin:top left}
.depth-skyline span:nth-child(2){height:137px;background:linear-gradient(90deg,#f3b45c,#eaa64b)}
.depth-skyline span:nth-child(2):before{background:#ffe0a0}.depth-skyline span:nth-child(2):after{background:#a87325}
.depth-skyline span:nth-child(3){height:106px;background:linear-gradient(90deg,#f2a180,#e88665)}
.depth-skyline span:nth-child(3):before{background:#ffd3b4}.depth-skyline span:nth-child(3):after{background:#a94f35}
@media(min-width:901px){.page-lead h1{max-width:calc(100% - 175px)}.page-lead>p{max-width:min(760px,calc(100% - 175px))}}
@media(max-width:900px){.depth-skyline{display:none}}
.page-lead:after{content:"";display:block;width:106px;height:11px;border-radius:3px;margin-top:38px;background:linear-gradient(90deg,#6fae99 0 30%,transparent 30% 35%,#e58b6b 35% 65%,transparent 65% 70%,#dfb04f 70%);box-shadow:0 6px 0 #b7c7b3;transform:skewX(-24deg)}
.columns{gap:24px}.panel{padding:30px;margin-bottom:12px}.panel h2{font-size:27px;line-height:1.2}
.panel li{line-height:1.7;font-size:14px}
.list{border:0;display:grid;gap:20px}
.row{position:relative;align-items:start;padding:29px 26px;border:1px solid #b9cec2;border-radius:7px;background:#fffef7;box-shadow:0 6px 0 #cddacd,0 7px 0 #b6c9ba;gap:20px}
.row:hover{padding:29px 26px;background:#f5faf1}
.row .idx{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:#dbe8d9;border-radius:5px;box-shadow:0 4px 0 #aac5ac;color:#255548}
.row h3{font:650 22px/1.2 var(--dimension-font);letter-spacing:-.035em}.row p{font-size:14px;line-height:1.7}.status{background:#f0e4cb;border:1px solid #d8c4a0;padding:5px 8px;border-radius:3px;font-size:10px;color:#72462b;white-space:normal}
.callout{border:1px solid #b4cabc;border-left:5px solid #60987e;border-radius:5px;background:linear-gradient(120deg,#e1eedc,#eef0de);box-shadow:0 6px 0 #c5d7c2;padding:25px 28px;font-size:14px;line-height:1.7}
.course-grid{gap:22px}.course-item{padding:26px;min-width:0}.course-item h3{font:650 22px/1.22 var(--dimension-font);letter-spacing:-.035em}.course-item p{font-size:13px;line-height:1.65}.course-no{color:#326a59;font-size:13px}
.learning-layout{gap:35px}.learning-map{background:#e5eddd;border:1px solid #bacdb8;border-radius:7px;padding:22px;box-shadow:0 7px 0 #b9cdb3}
.learning-map h2{font:650 22px var(--dimension-font);letter-spacing:-.04em}.learning-map nav a{font-size:13px;line-height:1.6;padding:12px 0;color:#254f45}
.learning-map .button{font-size:12px;padding:10px;min-height:44px}.skill{padding:32px;margin-bottom:30px;scroll-margin-top:25px}
.skill h2{font:650 30px/1.16 var(--dimension-font);letter-spacing:-.045em}.skill h3{font-family:var(--dimension-font);line-height:1.35}.skill p,.skill li{line-height:1.75}
.worked-example{border-radius:5px;background:#e6eee0;border-color:#4f8873;box-shadow:0 4px 0 #cedbc6}
textarea{border-radius:5px;box-shadow:inset 0 3px 0 #d9e2d8;padding:16px;border-color:#91afa0;max-width:100%}
fieldset{border-radius:5px;background:#f5f7ed;border-color:#b9cebb}.review-check{line-height:1.5;cursor:pointer}.review-check input{accent-color:#1d6655}
details p{background:#eaf0e2;border-radius:4px}summary{color:#255a4d;text-underline-offset:4px}
.skill .practice{padding-top:16px}.skill .button{margin-top:8px}.teaching{line-height:1.8}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #245f8c;outline-offset:5px}
.site-head a:focus-visible{outline-color:#ffe097}.skip-link{z-index:50;box-shadow:0 4px 0 #adc8b6}
@media(max-width:1100px){.hero{gap:20px}.hero h1{font-size:clamp(44px,6vw,68px)}.site-head .wrap{justify-content:flex-start}.site-head .logo{max-width:none}.tile{padding:23px}.tile h3{font-size:23px}}
@media(max-width:900px){.hero{grid-template-columns:1fr;padding:55px 0;gap:16px}.hero h1{font-size:clamp(44px,9vw,76px);max-width:720px}.hero p{max-width:650px}.model-sculpture{width:min(100%,610px);justify-self:center}.model-sculpture svg{max-height:430px}.grid3{grid-template-columns:1fr;gap:24px}.tile{min-height:250px}.tile h3{margin-top:24px}.tile p{max-width:650px}.section-head{align-items:start}.row{grid-template-columns:45px minmax(0,1fr)}.row p{grid-column:2}.row .status{grid-column:2;justify-self:start}.feature{grid-template-columns:1fr}.feature-copy{min-height:0}.columns{grid-template-columns:1fr}.progress{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.learning-layout{grid-template-columns:1fr}.learning-map{position:static}.page-lead h1{max-width:100%}.section{padding:48px 0}.section-head p{max-width:none}}
@media(max-width:620px){.wrap{padding-left:20px;padding-right:20px}.site-head .wrap{padding-top:20px;padding-bottom:14px;min-height:0;gap:14px}.site-head .logo{font-size:11px;letter-spacing:.06em}.site-head nav{gap:8px 18px}.site-head nav a{font-size:12px;min-height:40px;display:inline-flex;align-items:center}.hero{padding:38px 0 48px}.hero h1{font-size:clamp(39px,10.5vw,61px);letter-spacing:-.06em}.hero p{font-size:15px}.hero .actions{gap:14px}.hero .button{font-size:12px;padding:12px 14px}.model-sculpture{padding-top:12px}.sculpture-index{margin:0;gap:8px}.sculpture-index a{font-size:11px;gap:6px}.model-sculpture figcaption{font-size:9px;margin-right:0}.notice{font-size:12px;padding:14px 16px;margin-bottom:28px}.section-head{display:block}.section-head p{font-size:14px}.tile{padding:24px}.section h2{font-size:34px}.feature-copy,.feature-side{padding:27px}.feature-copy h2{font-size:43px}.progress{gap:15px}.step{padding:19px;min-height:155px}.step strong{font-size:30px}.page-lead{padding-top:44px;padding-bottom:30px}.page-lead h1{font-size:43px}.page-lead p{font-size:15px}.row{padding:22px 17px;gap:14px}.row:hover{padding:22px 17px}.row h3{font-size:21px}.row p{font-size:13px}.panel{padding:25px}.course-grid{grid-template-columns:1fr}.course-item{padding:22px}.skill{padding:21px}.skill h2{font-size:26px}.learning-map{padding:19px}.learning-map ol{display:block}.footer .wrap{flex-direction:column}.footer{margin-top:55px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.model-sculpture .sector,.tile,.panel,.course-item,.button{transition:none}.model-sculpture .sector:hover,.model-sculpture .sector:focus-visible,.tile:hover,.panel:hover,.course-item:hover,.button:hover{transform:none}}
@media(forced-colors:active){.tile,.panel,.skill,.course-item,.step,.notice,.button{border:2px solid CanvasText;box-shadow:none}.model-sculpture svg{forced-color-adjust:none}}
@media(max-width:620px){.model-sculpture figcaption{font-size:11px;line-height:1.6}.model-sculpture svg>.svg-note,.model-sculpture .sector-labels{display:none}.sculpture-index a{font-size:12px;line-height:1.4}}

/* ETV presentation review: measured spacing and readable content at every card width. */
body{background:#f5f7f8;background-image:none;color:#172e3c;overflow-wrap:break-word}
:root{--cream:#f5f7f8;--paper:#fff;--line:#d6e0e5;--muted:#526873}
.site-head{background:#153644;box-shadow:0 4px 20px #142e3e0a}
.site-head:after{height:1px;background:#9cb6c6;box-shadow:none}
.site-head .logo{display:flex;align-items:center;gap:14px;max-width:420px;letter-spacing:0;text-decoration:none}
.site-head .logo img{width:82px;height:auto;flex:none;filter:brightness(0) invert(1)}
.site-head .logo span{font-size:9px;letter-spacing:.13em;font-weight:500;line-height:1.7;max-width:210px}
.site-head nav a{color:#e1e9ee;font-weight:500}.site-head nav a:hover,.site-head nav a[aria-current=page]{color:white;border-color:#b9d8e9}
.page-lead h1{font-size:clamp(34px,5.4vw,68px);line-height:1.08;letter-spacing:-.045em;overflow-wrap:normal}
.page-lead{padding-top:58px;padding-bottom:38px}.page-lead:after{height:2px;width:70px;box-shadow:none;transform:none;background:#7c9cac;margin-top:28px}
.page-lead p{font-size:16px}.page-lead .micro,.eyebrow{color:#476778}
.course-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;align-items:stretch}
.course-item{display:block;padding:clamp(24px,3vw,38px);min-width:0;box-shadow:0 8px 26px #17344006;background:#fff;border-color:#d3dfe6;border-radius:10px}
.course-item>div{width:100%;min-width:0;height:100%;display:flex;flex-direction:column;align-items:flex-start}
.course-item .eyebrow{font-size:10px;letter-spacing:.13em;white-space:nowrap;margin-bottom:18px}
.course-item h2,.course-item h3{font:600 clamp(22px,2.2vw,29px)/1.22 var(--dimension-font);letter-spacing:-.035em;margin:0 0 18px;overflow-wrap:normal;word-break:normal;max-width:100%}
.course-item p{font-size:14px;line-height:1.75;margin:0 0 15px;max-width:100%}
.course-item p:has(>strong){margin-top:auto;padding-top:14px;color:#26495c;font-size:13px}
.course-item .button{margin:0 0 18px;font-size:13px;padding:12px 18px;max-width:100%;white-space:normal;text-align:center}
.course-item p:last-child{margin:0;font-size:12px;text-decoration:underline;text-underline-offset:4px;color:#3f6076}
.course-item:hover{transform:none;border-color:#9ab4c6;box-shadow:0 10px 30px #1734400b}
.tile,.panel,.skill{background:#fff;border-color:#d3dfe6;box-shadow:0 8px 24px #17344006}
.tile:hover,.panel:hover{transform:none;box-shadow:0 10px 28px #1734400b;border-color:#9ab4c6}
.button{background:#1c445a;border-color:#1c445a;box-shadow:none;min-height:48px;font-size:13px;font-weight:600}
.button:hover{background:#285b77;box-shadow:none;transform:none}.button.ghost{background:transparent;box-shadow:none;color:#24485c;border-color:#a9bdc9}.button.ghost:hover{box-shadow:none;background:#edf3f7}
.footer,footer{background:#153644;border-top:1px solid #b6c9d4;color:#d8e3e9}.footer .wrap{align-items:flex-start;flex-wrap:wrap}
.learning-map{background:#edf3f6;border-color:#cedde6;box-shadow:none}.skill h2{letter-spacing:-.035em}.skill p,.skill li{color:#354e5b}
.learning-map nav a{color:#31546b}.worked-example,details p{background:#eef4f7}.callout,.notice{box-shadow:none}
input,textarea,select{min-width:0;max-width:100%}.review-check input{flex:none}table{max-width:100%}
@media(max-width:900px){.course-grid{grid-template-columns:1fr}.page-lead h1,.page-lead>p{max-width:100%}}
@media(max-width:620px){.site-head .logo img{width:68px}.site-head .logo span{font-size:8px}.page-lead{padding-top:35px}.page-lead h1{font-size:clamp(32px,8.5vw,43px)}.course-item{padding:25px}.course-item h2{font-size:25px}.course-grid{gap:18px}.course-item .button{width:100%}}
.course-item details{margin-top:14px;border-top:1px solid #dce5eb;width:100%;padding-top:5px}.course-item details summary{font-size:12px;min-height:44px;color:#3d6076;font-weight:500}.course-item details p{padding:0;background:none;font-size:13px}.course-item details+*{margin-top:12px}