.kh-learning .course-experience { padding:0; --course-accent:var(--world-ink,var(--ks-4f743c)); --course-pale:var(--world-pale,var(--ks-edf3dd)); }
.kh-learning .course-breadcrumb { display:flex; flex-wrap:wrap; align-items:center; gap:10px; padding:0; margin:0 0 22px; background:none; font-size:11px; line-height:1.5; color:var(--kt-68765f); }
.course-breadcrumb a { display:flex; align-items:center; gap:8px; }
.course-breadcrumb .icon { width:14px; height:14px; transform:rotate(180deg); }
.kh-learning .course-experience .course-heading { display:flex; justify-content:space-between; align-items:center; gap:28px; margin:0; min-height:225px; padding:30px 34px; background:var(--course-pale); border:1px solid color-mix(in srgb,var(--course-pale),var(--course-accent) 15%); border-radius:24px; }
.course-hero-copy { max-width:720px; position:relative; z-index:1; }
.course-kicker { display:flex; align-items:center; gap:12px; flex-wrap:wrap; font-size:10px; font-weight:700; letter-spacing:1px; color:var(--kt-59704a); line-height:1.6; margin:0 0 10px; }
.course-kicker>span { border-left:1px solid var(--ks-b7c8a6); padding-left:12px; }
.kh-learning .course-experience .course-heading h1 { font-size:36px; line-height:1.15; margin:0 0 14px; max-width:780px; }
.course-experience .course-heading .course-hero-description { font-size:14px; line-height:1.8; max-width:620px; color:var(--kt-5e7255); font-weight:400; }
.course-hero-facts { display:flex; flex-wrap:wrap; gap:12px 24px; margin-top:22px; }
.course-hero-facts>span { display:flex; align-items:center; gap:7px; font-size:11px; color:var(--kt-5c704f); }
.course-hero-facts .icon { width:16px; height:16px; }
.course-hero-art { position:relative; display:grid; place-items:center; width:172px; height:168px; flex-shrink:0; }
.course-art-orbit { position:absolute; inset:0; border:1px dashed var(--ks-aabf91); border-radius:50%; transform:rotate(-15deg); }
.course-art-emblem { display:grid; place-items:center; width:116px; height:128px; background:var(--ks-fffdf5); border:5px solid var(--ks-fff); border-radius:29px; box-shadow:0 7px 0 color-mix(in srgb,var(--course-pale),var(--course-accent) 30%); color:var(--course-accent); transform:rotate(-9deg); }
.course-art-emblem .journey-art { width:82px; height:82px; }
.course-art-spark { position:absolute; right:0; top:0; display:grid; place-items:center; width:36px; height:36px; background:var(--ks-fae4d4); color:var(--kt-a86643); border-radius:11px; transform:rotate(10deg); }
.course-art-spark .icon { width:21px; height:21px; }
.course-art-note { position:absolute; right:-2px; bottom:0; padding:9px 11px; background:var(--ks-faf1cf); color:var(--kt-796336); font-size:10px; font-weight:600; border-radius:7px; transform:rotate(6deg); }
.course-modes { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px; margin:20px 0 28px; }
.course-modes>a { display:flex; align-items:center; gap:12px; min-height:80px; padding:15px 18px; border:1px solid var(--ks-e0e6d8); border-bottom:3px solid var(--ks-dbe3d1); border-radius:17px; background:var(--ks-fff); color:var(--kt-64745b); }
.course-modes>a.is-current { background:var(--ks-f2f7ed); border-color:var(--ks-c9dabb); color:var(--kt-426032); }
.course-modes>a:hover { border-color:var(--ks-8fac73); }
.course-mode-number { display:grid; place-items:center; width:33px; height:38px; flex-shrink:0; border-radius:11px; background:var(--ks-edf3e5); color:var(--kt-729052); font-size:13px; font-weight:700; }
.course-modes strong { display:block; font-family:KahierNunito,Roboto,sans-serif; font-size:17px; }
.course-modes small { display:block; font-size:10px; font-weight:400; margin-top:4px; }
.course-modes .icon { width:21px; height:21px; flex-shrink:0; margin-left:auto; }
.kh-learning .course-experience .course-layout { display:grid; grid-template-columns:minmax(0,1fr) 270px; align-items:start; gap:24px; }
.kh-learning .course-experience .lesson { padding:0; border:0; background:transparent; min-width:0; width:auto; }
.kh-learning .course-experience .course-step { position:relative; padding:28px; background:var(--ks-fff); border:1px solid var(--ks-e1e7db); border-bottom:4px solid var(--ks-dfe7d6); border-radius:24px; margin:0 0 24px; scroll-margin-top:24px; }
.course-experience [id] { scroll-margin-top:30px; }
.course-experience .lesson :target { outline:2px solid var(--ks-94ad7b); outline-offset:6px; }
.course-experience :focus-visible { outline:3px solid var(--ks-466d36); outline-offset:4px; }
.kh-learning .course-experience .course-step>h2 { font-family:KahierNunito,Roboto,sans-serif; font-size:27px; align-items:center; gap:15px; margin:0 0 26px; line-height:1.25; }
.kh-learning .course-experience .course-step>h2>span { display:grid; place-items:center; padding:0; min-width:46px; height:50px; background:var(--course-pale); color:var(--course-accent); border-radius:15px; font-size:19px; transform:rotate(-5deg); }
.kh-learning .course-experience .course-step>h2>b { background:none; padding:0; color:var(--ink); font-weight:900; }
.kh-learning .course-experience .lesson-block { padding:0; }
.course-experience .lesson p,.course-experience .lesson li { line-height:1.85; }
.course-experience .lesson-block>p { margin:14px 0; font-size:15px; }
.course-experience .lesson-block ul,.course-experience .lesson-block ol { padding-left:24px; }
.kh-learning .course-experience .lesson h3 { font-family:KahierNunito,Roboto,sans-serif; font-size:22px; margin:25px 0 14px; }
.course-experience .lesson .property { display:inline-flex; clip-path:none; border-radius:7px; background:var(--ks-f8e9cc); color:var(--kt-876c35); font-size:10px; padding:6px 9px; font-weight:700; line-height:1.4; margin:10px 0 3px; letter-spacing:.5px; }
.course-experience .lesson .property::after { display:none; }
.kh-learning .course-experience .example { background:var(--ks-f4f7ee); border:1px solid var(--ks-e6eddb); border-left:3px solid var(--ks-a6bc8e); border-radius:13px; padding:19px 21px; margin:20px 0; }
.course-experience .example>small { color:var(--kt-6e8553); font-size:10px; letter-spacing:1px; font-weight:700; }
.course-experience .example p { margin:10px 0; font-size:14px; }
.kh-learning .course-experience .tip { display:flex; gap:14px; border:1px solid var(--ks-f0dfce); background:var(--ks-fff7ed); padding:18px; border-radius:14px; margin:22px 0; box-shadow:none; }
.course-experience .tip>span { display:flex; flex-direction:column; align-items:center; justify-content:flex-start; gap:7px; flex-shrink:0; min-width:46px; color:var(--kt-9b6e3e); font-size:inherit; }
.course-experience .tip .icon { width:23px; height:23px; }
.course-experience .tip small { font-size:8px; color:var(--kt-886533); font-weight:700; }
.course-experience .tip p { font-size:13px; margin:0; }
.course-experience .tip .example { margin-bottom:0; border:0; background:var(--ks-fffdf6); }
.course-experience .tip>div { min-width:0; }
.course-experience .formula,.course-experience .decimal-formula { color:var(--kt-4d6f3c); background:var(--ks-f4f7ed); border-radius:12px; padding:14px; font-size:19px; overflow-wrap:anywhere; }
.course-experience .curriculum-table,.course-experience .decimal-table-scroll,.course-experience .placevalue-scroll,.course-experience .number-table { overflow:auto; max-width:100%; border:1px solid var(--ks-e0e8d6); border-radius:13px; margin:22px 0; }
.course-experience table { width:100%; border-collapse:collapse; }
.course-experience table th { background:var(--ks-eaf2df); color:var(--kt-506c3d); font-size:12px; }
.course-experience table td { font-size:14px; background:var(--ks-fff); }
.course-experience table caption { font-size:11px; color:var(--kt-6b795f); padding:14px; line-height:1.7; }
.course-experience .placevalue-digits>span { min-width:1.6em; }
.course-experience .curriculum-visual,.course-experience .decimal-numberline,.course-experience .fraction-intro,.course-experience .fraction-equivalence>div { background:var(--ks-f6f9f0); border-color:var(--ks-e3eadb); border-radius:16px; }
.course-experience svg[role=img] { max-width:100%; height:auto; }
.course-experience .course-step-footer { display:flex; flex-wrap:wrap; align-items:center; gap:16px; border-top:1px dashed var(--ks-e0e8d5); padding-top:20px; margin-top:25px; }
.course-step-footer>span { display:flex; align-items:center; gap:6px; color:var(--kt-7c896b); font-size:10px; }
.course-step-footer a { display:flex; align-items:center; gap:7px; color:var(--kt-4d7140); font-size:11px; font-weight:600; }
.course-step-footer .icon { width:15px; height:15px; }
.course-step-footer a:first-of-type { margin-left:auto; }
.course-step-footer a.course-next-step { background:var(--ks-eff4e8); border:1px solid var(--ks-e1ead5); border-radius:10px; padding:10px 12px; }
.kh-learning .course-experience .contents.course-map { display:block; position:sticky; top:22px; width:auto; max-height:calc(100vh - 44px); overflow-y:auto; padding:0; border:1px solid var(--ks-e0e6d9); border-radius:21px; background:var(--ks-fff); }
.course-outline { padding:20px 18px 16px; }
.course-outline summary { display:flex; align-items:center; justify-content:space-between; gap:12px; font-family:KahierNunito,Roboto,sans-serif; font-size:18px; font-weight:900; color:var(--kt-344c2e); cursor:pointer; list-style:none; }
.course-outline summary::-webkit-details-marker { display:none; }
.course-outline summary>span:first-child { display:flex; align-items:center; gap:8px; }
.course-outline summary .icon { width:19px; height:19px; }
.course-outline[open] .course-outline-toggle { transform:rotate(180deg); }
.course-outline nav { margin-top:17px; }
.kh-learning .course-map .course-outline nav>a { display:flex; align-items:flex-start; gap:10px; font-size:12px; font-weight:400; color:var(--kt-637257); margin:4px 0; padding:10px; border-radius:12px; line-height:1.6; }
.kh-learning .course-map .course-outline nav>a>span { display:grid; place-items:center; padding:0; width:25px; min-width:25px; height:27px; background:var(--ks-eff4e6); color:var(--kt-6d8551); border-radius:8px; font-size:10px; }
.course-map .course-outline nav strong { font-weight:500; }
.kh-learning .course-map .course-outline nav>a[aria-current] { color:var(--kt-41652e); background:var(--ks-f0f5e8); }
.kh-learning .course-map .course-outline nav>a[aria-current]>span { background:var(--ks-6b8d4e); color:var(--kt-fff); }
.course-map .course-outline nav>a:hover { background:var(--ks-f3f6ec); }
.course-map .course-map-practice .icon { width:18px; height:18px; }
.course-reading-position { color:var(--kt-748264); font-size:10px; margin:13px 10px 0; }
.course-personal { padding:20px; border-top:1px solid var(--ks-e6ecdf); background:var(--ks-f8faf4); }
.course-personal>strong { display:block; color:var(--kt-466533); font-family:KahierNunito,Roboto,sans-serif; font-size:23px; line-height:1.3; margin:10px 0; }
.course-personal strong small { font-family:Roboto,sans-serif; font-size:11px; font-weight:400; }
.course-personal p:not(.course-kicker) { font-size:11px; line-height:1.7; color:var(--kt-69785b); }
.course-personal progress { width:100%; height:6px; border:0; background:var(--ks-e7eddd); border-radius:6px; overflow:hidden; accent-color:var(--ks-739951); }
.course-personal progress::-webkit-progress-bar { background:var(--ks-e7eddd); border-radius:6px; }
.course-personal progress::-webkit-progress-value { background:var(--ks-739951); border-radius:6px; }
.course-personal progress::-moz-progress-bar { background:var(--ks-739951); border-radius:6px; }
.course-map .course-personal>a,.course-personal-retry { display:flex; align-items:center; gap:6px; font-size:11px; font-weight:600; color:var(--kt-486d36); margin:14px 0 0; background:none; border:0; padding:0; }
.course-personal .icon { width:15px; height:15px; }
.course-map a.course-rail-challenge { display:flex; gap:8px; align-items:center; justify-content:center; border:1px solid var(--ks-d5e1c9); background:var(--ks-eaf3df); color:var(--kt-45662f); border-radius:12px; padding:12px; margin:17px 18px 12px; font-size:12px; }
.course-rail-challenge .icon { width:17px; height:17px; }
.course-pdf { width:100%; display:flex; justify-content:center; align-items:center; gap:8px; color:var(--kt-6f7d61); background:none; border:0; font-size:10px; padding:0 20px 18px; }
.course-pdf .icon { width:13px; height:13px; }
.course-experience .course-practice { margin:24px 0; background:var(--ks-f0f5e8); border:1px solid var(--ks-dce7ce); border-radius:23px; padding:27px; }
.course-practice-heading { display:flex; align-items:flex-start; gap:17px; margin-bottom:23px; }
.course-practice-emblem { width:48px; height:51px; display:grid; place-items:center; background:var(--ks-e0ecd0); color:var(--kt-607f43); border-radius:16px; transform:rotate(-5deg); flex-shrink:0; }
.course-practice-emblem .icon { width:26px; height:26px; }
.kh-learning .course-practice-heading h2 { display:block; margin:0 0 10px; font-family:KahierNunito,Roboto,sans-serif; font-size:24px; line-height:1.2; }
.course-practice-heading p:not(.course-kicker) { font-size:12px; line-height:1.7; color:var(--kt-657952); }
.course-challenges { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px; }
.course-experience .course-challenges .related-exercise { display:flex; align-items:flex-start; gap:10px; min-width:0; margin:0; padding:15px; background:var(--ks-fff); border:1px solid var(--ks-e0e8d5); border-bottom:3px solid var(--ks-dce5d0); border-radius:14px; color:var(--kt-4a6537); font-size:12px; line-height:1.5; }
.course-challenge-icon { display:grid; place-items:center; width:27px; height:30px; flex-shrink:0; border-radius:9px; background:var(--ks-f0f5e7); }
.course-challenge-icon>.icon { width:17px; height:17px; }
.course-challenges .related-exercise>span:nth-child(2) { min-width:0; flex:1; }
.course-challenges strong { display:block; font-weight:600; }
.course-challenges small { display:block; color:var(--kt-71845e); font-size:10px; margin-top:9px; }
.course-challenges .related-exercise>.icon { width:14px; height:14px; flex-shrink:0; margin-top:5px; }
.course-experience .course-memorize { display:flex; gap:8px; align-items:center; justify-content:center; width:100%; margin:16px 0 0; font-size:12px; }
.course-memorize .icon { width:17px; height:17px; }
.course-experience .course-workshop { font-size:12px; margin-top:15px; }
.course-experience .lesson-end { margin:28px 0; padding:25px; border:1px solid var(--ks-e2e8db); border-radius:20px; background:var(--ks-fff); text-align:left; }
.kh-learning .course-experience .lesson-end h2 { display:block; font-family:KahierNunito,Roboto,sans-serif; font-size:24px; margin:0 0 12px; }
.course-experience .lesson-end p:not(.course-kicker) { font-size:13px; color:var(--kt-697d5a); margin-bottom:20px; }
.course-experience .lesson-end>div:last-child { display:flex; gap:12px; flex-wrap:wrap; }
.course-experience .lesson-end .button { font-size:12px; }
.course-origin { font-size:11px; color:var(--kt-6c7e5d); margin:26px 6px; line-height:1.7; }
.course-origin summary { cursor:pointer; }
.course-origin .lesson-meta { padding:0; margin:12px 0 0; font-size:11px; }
.course-experience .course-return { background:var(--ks-fcf1df); border:1px solid var(--ks-ead8b5); border-radius:14px; margin:18px 0; padding:16px; }
@media(max-width:1200px) {
  .kh-learning .course-experience .course-layout { grid-template-columns:minmax(0,1fr) 230px; gap:18px; }
  .course-experience .course-hero-art { width:120px; }
  .course-art-emblem { width:90px; height:106px; }
  .course-art-emblem .journey-art { width:70px; height:70px; }
  .kh-learning .course-experience .course-step { padding:24px; }
  .course-challenges { grid-template-columns:1fr; }
  .course-modes .icon { display:none; }
}
@media(max-width:1000px) {
  .kh-learning .course-experience .course-layout { display:flex; flex-direction:column-reverse; gap:20px; }
  .kh-learning .course-experience .course-layout>* { width:100%; }
  .kh-learning .course-experience .contents.course-map { position:static; max-height:none; display:grid; grid-template-columns:1fr auto; align-items:center; }
  .course-outline { grid-column:1/-1; }
  .course-map:has(.course-outline:not([open])) > :not(.course-outline) { display:none; }
  .course-personal { border:0; padding:16px 20px; }
  .course-personal>strong { font-size:20px; }
  .course-personal .course-kicker { margin-bottom:3px; }
  .course-personal p:not(.course-kicker) { max-width:500px; }
  .course-map a.course-rail-challenge { margin:14px 18px; }
  .course-pdf { grid-column:1/-1; justify-content:flex-start; padding:5px 20px 17px; }
  .course-challenges { grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media(max-width:680px) {
  .kh-learning .course-breadcrumb { margin-bottom:18px; }
  .kh-learning .course-experience .course-heading { padding:25px 23px; min-height:0; }
  .kh-learning .course-experience .course-heading h1 { font-size:30px; }
  .course-experience .course-heading .course-hero-description { font-size:13px; }
  .course-hero-art { display:none!important; }
  .course-hero-facts { gap:10px 16px; margin-top:18px; }
  .course-hero-facts>span { font-size:10px; }
  .course-kicker { font-size:9px; letter-spacing:.7px; gap:8px; }
  .course-kicker>span { padding-left:8px; }
  .course-modes { gap:7px; margin:15px 0 22px; }
  .course-modes>a { padding:13px 8px; gap:7px; min-width:0; min-height:95px; flex-direction:column; align-items:center; text-align:center; }
  .course-mode-number { width:27px; height:28px; font-size:11px; border-radius:9px; }
  .course-modes strong { font-size:13px; }
  .course-modes small { display:none; }
  .kh-learning .course-experience .contents.course-map { display:block; }
  .course-map .course-personal { padding:16px 20px; border-top:1px solid var(--ks-e4ebd9); }
  .course-personal p:not(.course-kicker) { font-size:11px; }
  .course-personal>a { margin-top:10px; }
  .course-outline { padding:17px 20px; }
  .course-outline summary { font-size:17px; }
  .course-map a.course-rail-challenge { margin:5px 18px 14px; }
  .kh-learning .course-experience .course-step { padding:23px 18px; border-radius:20px; }
  .kh-learning .course-experience .course-step>h2 { font-size:24px; gap:12px; margin-bottom:24px; }
  .kh-learning .course-experience .course-step>h2>span { min-width:35px; height:42px; font-size:16px; border-radius:12px; }
  .course-experience .lesson-block>p { font-size:14px; }
  .kh-learning .course-experience .example { padding:17px 15px; }
  .kh-learning .course-experience .tip { padding:15px 12px; gap:9px; }
  .course-experience .tip>span { min-width:30px; }
  .course-experience .example p { font-size:13px; }
  .course-step-footer a:first-of-type { margin-left:0; }
  .course-step-footer>span { width:100%; }
  .course-experience .course-practice { padding:22px 17px; }
  .course-practice-heading { gap:12px; }
  .course-practice-emblem { width:35px; height:40px; border-radius:12px; }
  .course-practice-emblem .icon { width:23px; height:23px; }
  .kh-learning .course-practice-heading h2 { font-size:23px; }
  .course-challenges { grid-template-columns:1fr; }
  .course-experience .lesson-end { padding:22px 18px; }
  .course-experience .lesson-end .button { width:100%; }
}
@media(prefers-reduced-motion:reduce) { .course-experience * { scroll-behavior:auto; } }
.course-manipulation { margin:24px 0 4px; padding:20px; background:var(--ks-fffaf0); border:1px solid var(--ks-e7dbc2); border-radius:16px; }
.course-manipulation .course-manipulation-kicker { margin:0 0 12px; color:var(--kt-705623); font-size:10px; font-weight:700; letter-spacing:.7px; }
.course-manipulation label { display:block; font-weight:600; line-height:1.7; }
.course-manipulation textarea { display:block; width:100%; min-height:110px; resize:vertical; margin-top:12px; padding:12px; border:1px solid var(--ks-b6baad); border-radius:10px; background:var(--ks-fff); color:var(--ink,var(--kt-293d37)); font:inherit; line-height:1.6; }
.course-manipulation .course-manipulation-note { font-size:12px; line-height:1.6; color:var(--kt-666c5e); margin:8px 0 16px; }
.course-manipulation details { border-top:1px solid var(--ks-e5dccb); padding-top:13px; }
.course-manipulation summary { cursor:pointer; color:var(--kt-395e48); font-weight:600; line-height:1.6; }
.course-manipulation details p { overflow-wrap:anywhere; }