[hidden]{display:none!important}
:root{--navy:#093c4d;--deep:#062d3a;--sea:#117586;--teal:#167d86;--aqua:#cae9e3;--cream:#f6f5ed;--sand:#ece9d9;--gold:#dcaa66;--ink:#163b48;--muted:#52707b;--border:#d2e0de;--white:#fff;--shadow:0 20px 45px rgba(10,52,66,.09);font-family:Inter,'Aptos','Segoe UI',-apple-system,BlinkMacSystemFont,Arial,sans-serif;color:var(--ink);background:#fff;scroll-behavior:smooth}*{box-sizing:border-box}body{margin:0;line-height:1.65;font-size:16px}button,input,select{font:inherit}a{color:inherit;text-decoration:none}a:hover{text-decoration:none}img{max-width:100%;display:block}button{cursor:pointer}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.16;letter-spacing:-.035em}h1{font-size:clamp(2.5rem,5vw,5.1rem)}h2{font-size:clamp(1.9rem,3.2vw,3.1rem)}h3{font-size:1.2rem}.container{width:min(1170px,calc(100% - 44px));margin-inline:auto}.narrow{max-width:780px}.skip{position:absolute;top:-100px;z-index:1000;left:10px;padding:12px;background:var(--gold)}.skip:focus{top:10px}.masthead{position:relative;z-index:70;background:#fff;border-bottom:1px solid var(--border)}.head-row{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:83px}.identity{display:flex;align-items:center;gap:11px;line-height:1.1}.identity b{display:block;font-weight:850;letter-spacing:.125em;font-size:1.4rem;color:var(--navy)}.identity small{display:block;letter-spacing:.115em;color:var(--sea);font-size:.52rem;margin-top:5px;font-weight:800}.logo-mark{display:grid;place-items:center;background:var(--navy);color:var(--aqua);width:44px;height:44px;border-radius:8px;flex:none}.logo-mark svg{width:34px;height:34px}.head-tools{display:flex;align-items:center;gap:24px}.head-context{font-weight:750;font-size:.69rem;letter-spacing:.17em;color:var(--muted)}.lang-switch{border:1px solid var(--border);display:flex;gap:7px;align-items:center;border-radius:30px;padding:4px 9px;color:#476873;font-weight:750;font-size:.81rem}.lang-switch a{padding:2px 5px;border-radius:20px}.lang-switch a[aria-current="page"]{background:var(--navy);color:white}.main-nav{background:#f8faf6;border-top:1px solid #edf1eb}.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:51px;overflow:auto}.nav-inner a{font-weight:710;font-size:.84rem;white-space:nowrap;padding:15px 1px 13px;border-bottom:3px solid transparent}.nav-inner a:hover,.nav-inner a[aria-current="page"]{color:var(--sea);border-bottom-color:var(--sea)}.menu-toggle{display:none;border:0;background:transparent;padding:9px}.menu-toggle span{display:block;width:22px;height:2px;background:var(--navy);margin:4px}.eyebrow{color:#147584;letter-spacing:.18em;font-weight:850;font-size:.74rem;text-transform:uppercase;margin-bottom:22px}.home-hero{background:linear-gradient(117deg,#092f3d,#0d4858 58%,#105568);color:white;overflow:hidden}.home-hero-grid{display:grid;grid-template-columns:52% 48%;min-height:565px;align-items:stretch}.hero-copy{position:relative;z-index:2;align-self:center;padding:75px 22px 75px 0}.home-hero .eyebrow,.navy .eyebrow{color:#9addde}.home-hero h1{max-width:690px}.hero-copy>p:not(.eyebrow){max-width:585px;color:#d4e5e7;font-size:1.12rem;line-height:1.77;margin-top:24px}.hero-ctas{display:flex;flex-wrap:wrap;gap:13px;margin-top:30px}.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:5px;font-size:.9rem;font-weight:780;padding:12px 20px;border:1px solid var(--navy);background:transparent;color:var(--navy);transition:transform .12s,border-color .12s,background .12s}.btn:hover{transform:translateY(-2px)}.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #e7a74a;outline-offset:3px}.btn.primary{background:#d7ebe4;border-color:#d7ebe4;color:var(--deep)}.btn.outline{border-color:#9ebfc6;color:white}.btn.secondary{background:var(--navy);color:white}.btn.light{background:white;border-color:white}.btn.small{min-height:35px;font-size:.76rem;padding:8px 12px}.hero-markers{display:flex;gap:18px;flex-wrap:wrap;color:#89c1c7;font-size:.7rem;margin-top:55px}.hero-markers span{border-top:1px solid #43818c;padding-top:10px}.hero-markers b{font-weight:700;color:#d6eef0}.hero-graphic{position:relative;display:flex;align-items:center;justify-content:center;min-width:0;background:radial-gradient(ellipse,#28748570 0%,transparent 75%)}.hero-graphic img{width:min(730px,125%);max-width:unset;filter:drop-shadow(0 20px 33px rgba(0,0,0,.22))}.hero-graphic span{position:absolute;right:10px;bottom:38px;font-size:.72rem;color:#bad5d6;background:#0b415a9c;padding:6px 10px;max-width:75%}.accent-band{background:#e9f1ed;border-bottom:1px solid var(--border)}.fact-row{display:flex;justify-content:space-around;gap:15px;padding:24px 10px}.fact-row>div{display:flex;align-items:baseline;gap:11px}.fact-row b{font-weight:850;font-size:2.1rem;color:var(--navy)}.fact-row span{font-size:.82rem;font-weight:700;color:var(--sea)}.section{padding:84px 0}.section.muted{background:var(--cream)}.section.navy{background:var(--deep);color:#fff}.section-intro{display:flex;align-items:flex-end;justify-content:space-between;gap:35px;margin-bottom:32px}.section-intro h2{max-width:720px}.section-intro p{max-width:285px;color:var(--muted)}.path-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.path-card{border:1px solid var(--border);padding:23px 20px;min-height:215px;display:flex;flex-direction:column;justify-content:space-between;transition:background .2s,transform .2s;border-radius:6px;background:white}.path-card:hover{transform:translateY(-4px);background:#ebf6f2}.path-card .path-num{color:#0a8091;font-weight:850;font-size:.79rem}.path-card h3{font-size:1.19rem;display:flex;justify-content:space-between;gap:5px}.path-card h3 span{color:var(--sea)}.path-card p{font-size:.82rem;color:#58707a;line-height:1.6}.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:8%;align-items:center}.feature-split>div:last-child{display:flex;flex-direction:column;align-items:start;gap:18px}.feature-split p{line-height:1.9;color:var(--muted)}.image-frame{padding:20px;background:linear-gradient(135deg,#c8e3e3,#fff);border-radius:5px;box-shadow:var(--shadow)}.image-frame img{width:100%;height:auto}.image-frame small{display:block;font-size:.73rem;color:var(--muted);line-height:1.4}.clean-list{padding-left:22px;line-height:2.1;color:var(--ink)}.text-link{font-weight:800;color:var(--sea);border-bottom:2px solid var(--sea);padding-bottom:2px;display:inline-block}.story-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.story-card{background:white;border:1px solid var(--border);padding:24px;min-height:305px;display:flex;flex-direction:column;align-items:start;border-radius:5px;transition:box-shadow .17s,transform .17s}.story-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.story-card .eyebrow{font-size:.67rem;margin-bottom:26px}.story-card h3{font-size:1.28rem;line-height:1.23;margin-bottom:14px}.story-card p{font-size:.85rem;color:var(--muted);line-height:1.7}.card-action{margin-top:auto;padding-top:25px;color:var(--sea);font-weight:800;font-size:.79rem}.learning-feature{display:grid;grid-template-columns:1.4fr 1fr;gap:70px;align-items:center}.learning-feature h2{max-width:670px}.learning-feature p{color:#bed7d9;margin:18px 0 20px}.pill-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:25px}.pill{color:#d5eced;border:1px solid #396978;border-radius:50px;display:flex;align-items:center;gap:12px;padding:8px 13px;font-size:.77rem;font-weight:700}.pill span{color:#85bdc6}.pill:hover{background:#255769}.study-panel{padding:38px;background:linear-gradient(148deg,#176778,#0e4b58);border:1px solid #398a99;box-shadow:0 30px 65px rgba(0,0,0,.13)}.study-panel>span{font-size:.72rem;font-weight:850;letter-spacing:.2em;color:#bbece4}.study-panel h3{font-size:2rem;margin-top:20px}.study-panel p{margin-bottom:25px}.source-preview{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}.source-preview>div>p{margin:18px 0;color:var(--muted)}.mini-sources{display:grid;gap:12px}.mini-sources a{background:#f2f7f3;border:1px solid #d2e4df;padding:19px;font-weight:780;transition:background .15s}.mini-sources a:hover{background:#dcefea}.page-hero{background:#e9f3f0;background-image:radial-gradient(circle at 25% 35%,#e9f3f0 0,#e9f3f0 55%,#d2e9e7 100%);border-bottom:1px solid var(--border)}.hero-split{display:grid;grid-template-columns:1.25fr .75fr;min-height:360px;align-items:center;gap:35px}.hero-split>div:first-child{padding:62px 0}.hero-split h1{font-size:clamp(2.25rem,4vw,4.25rem);color:var(--deep)}.hero-sub{color:#426572;font-size:1.08rem;margin-top:22px;max-width:630px}.hatch{margin-top:25px;width:120px;height:6px;background:repeating-linear-gradient(90deg,var(--sea) 0 15px,transparent 15px 23px)}.hero-art img{max-height:330px;max-width:100%;margin:auto;filter:drop-shadow(0 12px 20px #1f5b651c)}.article-layout{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(240px,.85fr);gap:78px;align-items:start}.article-body{min-width:0}.article-body h2{font-size:1.72rem;margin:34px 0 13px;color:var(--navy)}.article-body p{font-size:1.07rem;line-height:1.94;color:#365a67}.article-body>h2:first-child{margin-top:0}.notice{background:#ebf5f1;border-left:4px solid #15919b;border-radius:3px;padding:22px;color:var(--ink);margin-bottom:22px}.notice p{margin-top:6px;font-size:.91rem;line-height:1.6}.inquiry{background:#fcf6e9;padding:26px;border-left:4px solid var(--gold);margin-top:46px}.inquiry h3{margin-bottom:12px}.inquiry p{font-size:1rem}.source-panel{position:sticky;top:20px;border:1px solid var(--border);padding:27px;border-radius:5px;background:#fbfcfa}.source-panel h3{margin-bottom:17px}.reference-list{list-style:none;padding:0;margin:0}.reference-list li{border-top:1px solid var(--border);padding:15px 0}.reference-list a{display:block;line-height:1.5}.reference-list a:hover{color:var(--sea)}.reference-list span{font-size:.74rem;color:var(--muted);display:block}.reference-list strong{font-size:.88rem;line-height:1.5;display:block;margin-top:5px}.subtle{font-size:.85rem;color:var(--muted)}.source-panel .subtle{margin:14px 0}.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:27px}.timeline>div{border-top:3px solid var(--teal);padding-top:20px}.timeline b{font-size:2rem;color:var(--navy)}.timeline h3{font-size:1rem;margin:10px 0}.timeline p{font-size:.86rem;color:var(--muted)}.warning{background:#fff;border-left:4px solid var(--gold);padding:25px}.lesson-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.lesson-tile{border:1px solid var(--border);padding:26px;display:flex;flex-direction:column;min-height:225px;background:#fff;gap:12px;transition:background .2s}.lesson-tile:hover{background:#eff8f4}.lesson-tile h2{font-size:1.6rem}.lesson-tile p{color:var(--muted);font-size:.9rem}.lesson-tile>span:last-child{font-size:.78rem;color:var(--sea);font-weight:800;margin-top:auto}.num-tag{color:var(--sea);font-weight:850}.activity-steps{list-style:none;counter-reset:step;padding:0;margin:24px 0}.activity-steps li{position:relative;counter-increment:step;line-height:1.8;padding:16px 18px 16px 63px;border-bottom:1px solid var(--border)}.activity-steps li:before{content:counter(step,decimal-leading-zero);position:absolute;left:10px;font-weight:850;color:var(--sea)}.lesson-detail h2{font-size:1.45rem}.lesson-detail p{margin-bottom:22px}.filter-bar{display:grid;grid-template-columns:2fr 1fr 1.2fr;gap:15px;margin-bottom:20px}.filter-bar label,.sim-panel label{display:flex;flex-direction:column;gap:6px;font-size:.79rem;font-weight:800;color:var(--muted)}.filter-bar input,.filter-bar select{background:#f9fbfa;border:1px solid #b8d0d2;border-radius:4px;padding:13px 14px;width:100%;min-width:0;color:var(--ink)}.resource-header{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:8px 0 17px;font-size:.84rem;color:var(--muted)}.resource-header a{font-weight:780;color:var(--sea)}.resource-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-bottom:35px}.resource-item{border:1px solid var(--border);padding:22px;border-radius:4px;display:flex;flex-direction:column;gap:10px;min-width:0}.resource-item .topline{display:flex;gap:8px;align-items:center;justify-content:space-between}.rtype{font-size:.72rem;letter-spacing:.07em;font-weight:850;color:var(--sea);text-transform:uppercase}.resource-item .status{font-size:.67rem;color:#637d80}.resource-item h3{font-size:1.1rem}.resource-item p{font-size:.84rem;color:var(--muted)}.resource-item .publisher{font-size:.78rem;font-weight:750;color:#47717c}.resource-item .license-line{border-top:1px solid var(--border);margin-top:auto;padding-top:12px;color:#697f83;font-size:.74rem}.resource-item a{font-size:.82rem;font-weight:800;color:var(--sea);align-self:flex-start}.empty{padding:28px;background:var(--cream)}.glossary-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:20px}.glossary-entry{border:1px solid var(--border);padding:22px}.glossary-entry h2{font-size:1.25rem;margin-bottom:10px}.glossary-entry p{font-size:.83rem;margin-bottom:14px}.glossary-entry small{font-size:.76rem;color:var(--muted)}.lab-layout{display:grid;grid-template-columns:1.5fr .8fr;gap:44px}.lab-layout h2{font-size:1.7rem;margin-bottom:14px}.lab-layout>div>p{font-size:.87rem;color:var(--muted)}.lab-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.lab-tabs button{padding:8px 15px;border:1px solid var(--border);border-radius:3px;background:#eef5f2;font-size:.78rem;font-weight:780;color:var(--navy)}.lab-tabs button[aria-pressed="true"]{background:var(--navy);color:white;border-color:var(--navy)}.model-stage{border:1px solid #bdd9d7;background:linear-gradient(165deg,#e2eff1,#d5f0ed 70%,#bcdbe0);position:relative;padding:10px;overflow:hidden}.model-stage canvas{width:100%;height:auto;display:block;touch-action:pan-y;cursor:grab}.model-stage canvas:active{cursor:grabbing}.model-stage p{font-size:.72rem!important;color:#476778!important;background:#ffffffb8;padding:7px}.model-controls{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}.sim-panel{border:1px solid var(--border);padding:25px;background:#fbfcf9;display:flex;flex-direction:column;gap:13px}.sim-panel h2{font-size:1.45rem}.sim-panel input[type="range"]{accent-color:var(--teal);width:100%}.sim-panel label{margin-top:7px;flex-direction:row;justify-content:space-between;align-items:center}.sim-panel output{color:var(--navy)}.sim-result{background:var(--navy);padding:22px;color:white;display:flex;flex-direction:column;gap:8px}.sim-result span{font-size:.83rem;color:#cae5e9}.sim-result strong{font-size:2.6rem;line-height:1.1}.current-svg{width:100%;height:auto}.micro{font-size:.76rem!important;color:var(--muted);line-height:1.6}.virtual-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:27px}.virtual-card{min-height:230px;background:#fff;padding:22px;display:flex;flex-direction:column;gap:14px;border:1px solid var(--border)}.virtual-card:hover{border-color:var(--teal)}.virtual-card>span{font-size:.67rem;font-weight:850;color:var(--sea);letter-spacing:.12em}.virtual-card h3{font-size:1.25rem}.virtual-card p{font-size:.83rem;color:var(--muted)}.virtual-card small{font-size:.75rem;font-weight:850;color:var(--sea);margin-top:auto}.quiz-block{border:1px solid var(--border);padding:28px;max-width:800px;margin-top:22px}.quiz-question{padding:20px 0;border-bottom:1px solid var(--border)}.quiz-question h3{font-size:1rem;margin-bottom:12px}.quiz-option{display:block;cursor:pointer;font-size:.89rem;margin:6px 0;padding:9px 11px;background:#f6faf9}.quiz-option input{margin-right:8px;accent-color:var(--teal)}.quiz-block button{margin-top:22px}.quiz-feedback{margin-top:20px;line-height:1.7}.quiz-feedback .correct{color:#175d4e}.quiz-feedback .incorrect{color:#9c4b23}.quiz-feedback p{font-size:.85rem;margin:8px 0}.site-footer{padding:65px 0 32px;background:var(--deep);color:#d7e9e8}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:70px}.footer-brand{font-size:2rem;letter-spacing:.11em;font-weight:900;color:#fff;margin-bottom:16px}.footer-brand span{font-size:.55rem;vertical-align:top;letter-spacing:0}.site-footer p{font-size:.83rem;line-height:1.85;color:#a9c6c9;margin-bottom:14px}.site-footer h3{font-size:.86rem;letter-spacing:.06em;margin:8px 0 20px}.site-footer a{display:block;font-size:.84rem;color:#cce4e4;margin-bottom:11px}.site-footer a:hover{color:#fff}.small-print{font-size:.74rem!important;color:#8daeb3!important;margin-top:28px}.language-landing{min-height:100vh;background:linear-gradient(140deg,#f7f9f4,#d4ece8);display:flex;flex-direction:column;gap:24px;justify-content:center;align-items:center;text-align:center;padding:30px}.language-landing h1{color:var(--navy)}.language-landing nav{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}.language-landing .btn{min-width:180px}.language-landing small{color:var(--muted)}
@media(max-width:1080px){.path-grid,.story-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.nav-inner{gap:24px}.head-context{display:none}.hero-markers{margin-top:30px}.lab-layout{gap:20px}.virtual-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:740px){.container{width:min(100% - 32px,600px)}.head-row{min-height:68px}.identity b{font-size:1.12rem}.identity small{font-size:.45rem}.logo-mark{width:38px;height:38px}.head-tools{gap:10px}.menu-toggle{display:block}.nav-inner{display:none;flex-direction:column;gap:0;align-items:stretch;padding:12px 0}.main-nav.open .nav-inner{display:flex}.nav-inner a{padding:10px 2px}.home-hero-grid{grid-template-columns:1fr}.hero-copy{padding:67px 0 30px}.hero-copy>p:not(.eyebrow){font-size:1rem}.home-hero h1{font-size:clamp(2.6rem,10vw,4rem)}.hero-graphic{height:255px}.hero-graphic img{width:min(100%,490px)}.hero-graphic span{bottom:10px;font-size:.63rem}.hero-markers{margin-top:32px;gap:12px}.fact-row{flex-wrap:wrap;justify-content:space-between}.fact-row>div{width:44%}.fact-row b{font-size:1.6rem}.fact-row span{font-size:.74rem}.section{padding:56px 0}.section-intro{display:block}.section-intro p{margin-top:15px}.path-grid,.story-grid,.lesson-grid,.resource-list,.glossary-grid,.virtual-grid{grid-template-columns:1fr}.path-card{min-height:185px}.story-card{min-height:240px}.feature-split,.learning-feature,.source-preview,.hero-split,.article-layout,.lab-layout,.footer-grid{grid-template-columns:1fr;gap:30px}.feature-split{gap:30px}.learning-feature{gap:35px}.study-panel{padding:25px}.hero-split{min-height:auto}.hero-split>div:first-child{padding:50px 0 0}.hero-art{max-height:225px}.hero-art img{height:235px}.article-body h2{font-size:1.55rem}.article-body p{font-size:1rem}.source-panel{position:static}.timeline{grid-template-columns:repeat(2,1fr)}.filter-bar{grid-template-columns:1fr}.footer-grid{gap:25px}.site-footer{padding:45px 0 25px}.virtual-card{min-height:190px}.quiz-block{padding:18px}}
@media print{.masthead,.site-footer,.no-print,.btn,.menu-toggle,.lab-tabs,.source-panel{display:none!important}.section{padding:12px 0}.article-layout{display:block}.page-hero{background:#fff}.hero-art{display:none}.article-body h2{break-after:avoid}.article-body{font-size:12pt}.notice{border:1px solid #aaa;background:transparent}.activity-steps li{break-inside:avoid}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}

.quiz-question{border:0;border-bottom:1px solid var(--border);padding:17px 0;margin:0;min-width:0}.quiz-question legend{float:none;font-weight:800;font-size:.97rem;line-height:1.5;padding:0;margin-bottom:10px}.quiz-option:has(input:checked){background:#e3f1ec;border-left:3px solid var(--sea)}

/* V1.1 hosting hero photographic crop */
.hero-graphic{overflow:hidden;background:#0d4858}.hero-graphic img{height:100%;width:100%;max-width:100%;object-fit:cover;object-position:63% center;filter:none}.hero-graphic span{color:#fff;background:rgba(3,35,45,.8);border-radius:4px}
@media(max-width:740px){.hero-graphic img{height:255px;width:100%;max-width:100%;object-position:72% center}}

/* KELONG v1.1.2: realistic discover hero, scoped to Indonesian and English discover pages. */
.page-hero--kelong-realistic .hero-art--realistic{position:relative;display:flex;align-items:center;justify-content:flex-end;height:360px;max-height:none;min-width:0;overflow:hidden}
.page-hero--kelong-realistic .hero-art--realistic img{display:block;object-fit:cover;object-position:62% center;width:100%;height:315px;max-width:100%;max-height:none;margin:0;filter:none;border-radius:6px;-webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 14%,#000 100%);mask-image:linear-gradient(90deg,transparent 0%,#000 14%,#000 100%)}
.page-hero--kelong-realistic .hero-visual-note{position:absolute;right:9px;bottom:35px;color:#fff;background:rgba(5,44,56,.78);padding:6px 9px;border-radius:4px;font-size:.63rem;line-height:1.3;max-width:78%;text-align:right}
@media(max-width:740px){.page-hero--kelong-realistic .hero-art--realistic{display:block;height:238px;max-height:none;margin:0 0 24px}.page-hero--kelong-realistic .hero-art--realistic img{height:230px;object-position:65% center}.page-hero--kelong-realistic .hero-visual-note{bottom:11px;right:7px;font-size:.58rem}.page-hero--kelong-realistic .hero-split>div:first-child{padding-top:39px}}
@media print{.page-hero--kelong-realistic .hero-art--realistic{display:none!important}}