/* RFellow Learn — first-party sample-course showcase, Oct 2026.
   A concept preview; no enrollment backend, external imagery or tracking. */
.rf-learn-page{
 --learn-bg:#eff4f9;--learn-paper:#fff;--learn-surface:#f8fbfe;
 --learn-ink:#17304a;--learn-muted:#557089;--learn-subtle:#71869a;
 --learn-line:#dbe7ee;--learn-blue:#216fab;--learn-teal:#128895;
 --learn-shade:#e9f3f8;--learn-shadow:0 22px 68px rgba(26,62,94,.075);
 background:var(--learn-bg);color:var(--learn-ink);overflow-x:clip;
}
html[data-theme="dark"] body.rf-learn-page{
 --learn-bg:#0c192b;--learn-paper:#152a3e;--learn-surface:#192f44;
 --learn-ink:#f2f8ff;--learn-muted:#c0d1e2;--learn-subtle:#a6bed2;
 --learn-line:#354c65;--learn-blue:#89c4ff;--learn-teal:#7de0d5;
 --learn-shade:#1c354b;--learn-shadow:0 24px 74px rgba(0,8,21,.28);
 background:var(--learn-bg)!important;color:var(--learn-ink);
}
.rf-learn-page *{box-sizing:border-box}
.rf-learn-page .topbar{background:var(--learn-paper);border-bottom-color:var(--learn-line)}
.rf-learn-page a:focus-visible,.rf-learn-page summary:focus-visible{outline:3px solid #50a4cf;outline-offset:3px}
.learn-skip{position:absolute;left:16px;top:-120px;z-index:100;padding:11px 16px;border-radius:9px;background:var(--learn-paper);color:var(--learn-ink)}
.learn-skip:focus{top:12px}
.learning-main{width:100%;margin:0;min-width:0}
.learning-wrap{width:min(1220px,calc(100% - 64px));margin-inline:auto}
.learning-hero{position:relative;isolation:isolate;overflow:hidden;min-height:600px;padding:90px 0 93px;
 background:
 radial-gradient(ellipse 50% 75% at 78% 47%,rgba(58,155,206,.105),transparent 76%),
 radial-gradient(ellipse 42% 80% at 16% 0,rgba(46,123,196,.055),transparent 78%),
 var(--learn-bg)}
html[data-theme="dark"] .learning-hero{
 background:radial-gradient(ellipse 58% 87% at 78% 43%,rgba(42,120,173,.21),transparent 78%),
 radial-gradient(ellipse 50% 80% at 5% 0,rgba(34,106,177,.10),transparent 86%),var(--learn-bg)}
.learning-hero-grid{display:grid;grid-template-columns:minmax(0,.91fr) minmax(0,1.09fr);align-items:center;gap:58px}
.learning-hero-copy{min-width:0}
.learning-eyebrow,.learning-kicker{font-size:11px;line-height:1.5;letter-spacing:.13em;font-weight:850;color:var(--learn-teal)}
.learning-eyebrow{display:inline-flex;align-items:center;gap:12px}
.learning-live-dot{display:inline-block;width:8px;height:8px;border-radius:99px;background:#25b9a8;box-shadow:0 0 0 5px rgba(37,185,168,.11)}
.learning-hero h1{margin:24px 0 23px;max-width:710px;font-size:clamp(46px,5.1vw,75px);font-weight:850;line-height:1.055;letter-spacing:-.063em;color:var(--learn-ink)}
.learning-hero h1 span{display:block;background:linear-gradient(108deg,#1875b5 15%,#169d9f 89%);-webkit-background-clip:text;background-clip:text;color:transparent}
html[data-theme="dark"] .learning-hero h1 span{background-image:linear-gradient(100deg,#87c6ff,#78ead7)}
.learning-hero-lead{font-size:clamp(15px,1.45vw,18px);line-height:1.8;color:var(--learn-muted);max-width:550px;margin:0}
.learning-hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:30px}
.learning-button{display:inline-flex;gap:12px;align-items:center;justify-content:center;min-height:47px;border-radius:10px;padding:12px 18px;font-size:13px;font-weight:790;line-height:1.4;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}
.learning-button:hover{transform:translateY(-2px)}
.learning-button-primary{color:#fff!important;background:#246ea7;border:1px solid #246ea7;box-shadow:0 10px 24px rgba(34,102,161,.13)}
.learning-button-primary:hover{background:#1d5e92;box-shadow:0 13px 28px rgba(34,102,161,.21)}
.learning-button-outline{color:var(--learn-ink)!important;border:1px solid var(--learn-line);background:var(--learn-paper)}
.learning-button-outline:hover{border-color:#77b4c9}
.learning-hero-footnote{display:flex;gap:10px 16px;flex-wrap:wrap;margin-top:32px;font-size:11px;font-weight:720;color:var(--learn-subtle)}
.learning-hero-footnote span+span::before{content:"·";margin-right:16px;color:var(--learn-teal)}
.learning-preview-shell{border:1px solid rgba(138,186,210,.27);border-radius:19px;background:#11283e;color:#eaf5ff;overflow:hidden;box-shadow:0 34px 88px rgba(14,45,71,.19),0 1px 0 rgba(255,255,255,.15) inset;transform:rotate(-1deg)}
html[data-theme="dark"] .learning-preview-shell{box-shadow:0 35px 80px rgba(0,7,18,.47)}
.learning-preview-top{padding:17px 22px;display:flex;align-items:center;justify-content:space-between;gap:14px;background:#142d45;border-bottom:1px solid #2b4a64}
.learning-preview-brand{display:flex;align-items:center;gap:9px;font-size:12px;font-weight:790}
.learning-preview-mark{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:linear-gradient(130deg,#b2dfff,#4bc9be);color:#17354b;font-size:19px;font-weight:920;letter-spacing:-.04em}
.learning-preview-tag{font-size:9px;font-weight:830;letter-spacing:.08em;color:#8fd9d0;border:1px solid #3c6b7c;padding:5px 8px;border-radius:99px;white-space:nowrap}
.learning-preview-body{padding:29px 32px 27px}
.learning-preview-breadcrumb{font-size:10px;font-weight:810;letter-spacing:.1em;color:#93b3ca}
.learning-preview-breadcrumb span{padding:0 7px;color:#588ba6}
.learning-preview-body h2{font-size:clamp(21px,2.2vw,30px);font-weight:820;line-height:1.2;letter-spacing:-.04em;max-width:420px;margin:13px 0 6px;color:#f0f8ff}
.learning-preview-body>p{font-size:12px;color:#a6c2d7;line-height:1.55;margin:0 0 23px}
.learning-preview-chart{background:#132b42;border:1px solid #2c4c62;border-radius:12px;overflow:hidden;padding:15px}
.learning-preview-chart-title{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;color:#bdd5e8;font-size:10px;font-weight:810;letter-spacing:.06em}
.learning-preview-chart-title strong{color:#83b7c8;font-size:9px;font-weight:700;letter-spacing:0}
.learning-preview-chart svg{display:block;width:100%;height:auto;margin-top:10px;overflow:visible;color:#a9c0d4}
.learning-preview-insight{display:flex;gap:12px;margin-top:16px;align-items:flex-start;background:#1a3b50;border:1px solid #31566d;border-radius:10px;padding:13px 14px}
.learning-preview-spark{font-size:17px;color:#7fe9d6}
.learning-preview-insight p{margin:0;font-size:11px;line-height:1.6;color:#c4dce7}
.learning-preview-insight strong{color:#eaf8ff}
.learning-preview-footer{display:flex;justify-content:space-between;gap:10px;padding:15px 22px;border-top:1px solid #2b4a64;background:#132c43;color:#93b7cf;font-size:9px;font-weight:780;letter-spacing:.03em}
.learning-section{padding:84px 0}
.learning-section-intro{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:28px}
.learning-section-intro>div{max-width:680px}
.learning-section-intro h2,.learning-principles-grid h2,.learning-partner-layout h2{font-size:clamp(29px,3.15vw,45px);line-height:1.17;letter-spacing:-.044em;font-weight:825;color:var(--learn-ink);margin:12px 0 0}
.learning-section-intro>p{max-width:330px;margin:0;color:var(--learn-muted);font-size:13px;line-height:1.8}
.learning-feature-section{padding-top:50px}
.learning-feature-card{display:grid;grid-template-columns:minmax(0,.73fr) minmax(0,1.27fr);border:1px solid var(--learn-line);background:var(--learn-paper);border-radius:18px;overflow:hidden;box-shadow:var(--learn-shadow)}
.learning-feature-art{position:relative;display:flex;flex-direction:column;min-height:585px;overflow:hidden;padding:34px 34px 29px;
 color:#edf8ff;background:radial-gradient(ellipse 90% 63% at 70% 85%,rgba(62,156,188,.22),transparent 80%),linear-gradient(140deg,#14334e,#11253b 68%,#0e293c)}
.learning-feature-art::before{content:"";position:absolute;right:-60px;top:-80px;width:240px;height:240px;border-radius:50%;border:1px solid rgba(137,217,228,.14);box-shadow:0 0 0 65px rgba(137,217,228,.025),0 0 0 135px rgba(137,217,228,.016)}
.learning-feature-cover-kicker{font-size:11px;font-weight:850;letter-spacing:.12em;color:#a4dddf}
.learning-feature-cover-number{margin-top:88px;font-size:13px;font-weight:830;letter-spacing:.07em;color:#9dc5da}
.learning-feature-cover-number span{color:#5e93ad;padding:0 8px}
.learning-feature-art h3{font-size:clamp(42px,4.2vw,61px);letter-spacing:-.055em;font-weight:850;line-height:1.08;margin:18px 0 11px;color:#f2faff}
.learning-feature-art>p{font-size:17px;line-height:1.5;margin:0;max-width:330px;color:#a8cada}
.learning-feature-motif{width:100%;max-width:400px;min-height:170px;margin:25px auto auto;overflow:visible}
.learning-feature-cover-caption{margin-top:20px;font-size:10px;font-weight:820;letter-spacing:.07em;color:#9dbfd0;line-height:1.5}
.learning-feature-content{padding:43px clamp(24px,4.7vw,62px) 42px}
.learning-concept-pill{display:inline-flex;align-items:center;border-radius:99px;border:1px solid #a4d9cc;background:#eaf8f3;color:#236e67;padding:7px 11px;font-size:10px;font-weight:850;letter-spacing:.06em}
html[data-theme="dark"] .learning-concept-pill{background:#183f43;color:#a0e8d9;border-color:#42796f}
.learning-feature-content>h3{font-size:clamp(29px,3vw,42px);line-height:1.2;font-weight:820;letter-spacing:-.045em;color:var(--learn-ink);margin:19px 0 13px}
.learning-feature-content>p{font-size:14px;line-height:1.84;color:var(--learn-muted);margin:0 0 21px}
.learning-feature-facts{display:flex;flex-wrap:wrap;gap:10px}
.learning-feature-facts span{display:flex;flex-direction:column;gap:4px;flex:1 1 160px;padding:12px 13px;border-radius:10px;background:var(--learn-surface);border:1px solid var(--learn-line);font-size:12px;font-weight:680;color:var(--learn-ink)}
.learning-feature-facts b{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--learn-subtle)}
.learning-feature-content h4{font-size:14px;font-weight:820;margin:24px 0 8px;color:var(--learn-ink)}
.learning-syllabus{list-style:none;margin:0;padding:0}
.learning-syllabus li{display:flex;gap:14px;align-items:flex-start;padding:13px 0;border-bottom:1px solid var(--learn-line)}
.learning-syllabus li:last-child{border-bottom:0}
.learning-syllabus li>span{color:var(--learn-teal);font-size:12px;letter-spacing:.05em;font-weight:830;min-width:24px;padding-top:2px}
.learning-syllabus strong{display:block;font-size:13px;font-weight:820;color:var(--learn-ink);line-height:1.5}
.learning-syllabus small{display:block;font-size:12px;line-height:1.55;color:var(--learn-muted);margin-top:2px}
.learning-feature-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:22px}
.learning-feature-actions>span{font-size:11px;line-height:1.6;color:var(--learn-subtle)}
.learning-tracks-section{background:var(--learn-shade);border-top:1px solid var(--learn-line);border-bottom:1px solid var(--learn-line)}
.learning-tracks{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}
.learning-track-card{display:flex;flex-direction:column;align-items:flex-start;min-width:0;min-height:300px;padding:25px 22px 21px;border:1px solid var(--learn-line);border-radius:13px;background:var(--learn-paper);box-shadow:0 7px 25px rgba(23,67,95,.03);transition:transform .15s ease,border-color .15s ease,box-shadow .15s ease}
.learning-track-card:hover{border-color:#90bace;transform:translateY(-3px);box-shadow:var(--learn-shadow)}
.learning-track-icon{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--learn-shade);border:1px solid var(--learn-line);font-size:23px;color:var(--learn-teal);margin-bottom:25px}
.learning-track-index{font-size:10px;letter-spacing:.1em;color:var(--learn-teal);font-weight:850;margin-bottom:8px}
.learning-track-card>strong{font-size:20px;line-height:1.3;font-weight:825;letter-spacing:-.025em;color:var(--learn-ink)}
.learning-track-card p{font-size:13px;line-height:1.7;color:var(--learn-muted);margin:10px 0 19px}
.learning-track-link{font-size:12px;font-weight:800;color:var(--learn-blue);margin-top:auto}
.learning-principles-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:100px;align-items:center}
.learning-principles-grid>div:first-child>p{font-size:15px;line-height:1.85;max-width:470px;color:var(--learn-muted)}
.learning-principle-stack{display:grid;gap:2px}
.learning-principle-stack>div{display:grid;grid-template-columns:42px 1fr;gap:14px;padding:22px 0;border-bottom:1px solid var(--learn-line)}
.learning-principle-stack>div:first-child{border-top:1px solid var(--learn-line)}
.learning-principle-stack span{font-weight:850;font-size:12px;color:var(--learn-teal);padding-top:2px}
.learning-principle-stack p{font-size:14px;line-height:1.8;color:var(--learn-muted);margin:0}
.learning-principle-stack strong{color:var(--learn-ink);font-weight:820}
.learning-partner-section{padding:85px 0;background:linear-gradient(125deg,#112c44,#163c52);color:#ecf8ff}
html[data-theme="dark"] .learning-partner-section{background:linear-gradient(125deg,#122b42,#174257)}
.learning-partner-layout{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:72px;align-items:center}
.learning-partner-layout h2{color:#f0f8ff;max-width:740px}
.learning-partner-layout p{color:#bdd7e6;font-size:14px;line-height:1.86;max-width:650px;margin:18px 0 24px}
.learning-partner-layout .learning-button-outline{background:rgba(255,255,255,.09);color:#f0f8ff!important;border-color:rgba(183,232,242,.28)}
.learning-partner-note{padding:30px;border:1px solid rgba(169,218,236,.24);border-radius:14px;background:rgba(255,255,255,.045)}
.learning-partner-note>span{font-size:10px;letter-spacing:.11em;color:#8ad9d5;font-weight:830}
.learning-partner-note strong{display:block;font-size:22px;line-height:1.35;letter-spacing:-.02em;margin:12px 0;color:#f2faff}
.learning-partner-note p{margin:0;color:#bad3e3;font-size:13px;line-height:1.8}
.learning-directory-section{padding-bottom:90px}
.learning-directory-box{padding:33px clamp(20px,4vw,51px);border-radius:15px;border:1px solid var(--learn-line);background:var(--learn-paper);box-shadow:var(--learn-shadow)}
.learning-directory-box h2{font-size:clamp(25px,2.7vw,37px);line-height:1.3;letter-spacing:-.03em;color:var(--learn-ink);margin:8px 0 12px}
.learning-directory-box>p{max-width:800px;color:var(--learn-muted);font-size:14px;line-height:1.8;margin:0 0 20px}
.learning-directory-box .rf-two-grid{margin:0}
.learning-directory-box .rf-empty{padding:19px 20px;border:1px dashed var(--learn-line);background:var(--learn-surface);color:var(--learn-muted);border-radius:10px;font-size:13px;line-height:1.6}
.rf-learn-page footer{background:var(--learn-paper);border-top:1px solid var(--learn-line);color:var(--learn-muted)}
@media(max-width:1060px){.learning-hero-grid{gap:34px}.learning-tracks{grid-template-columns:repeat(2,minmax(0,1fr))}.learning-feature-card{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr)}.learning-principles-grid{gap:50px}}
@media(max-width:780px){.learning-wrap{width:min(100% - 36px,650px)}.learning-hero{min-height:0;padding:72px 0 66px}.learning-hero-grid,.learning-feature-card,.learning-principles-grid,.learning-partner-layout{grid-template-columns:1fr}.learning-hero-grid{gap:36px}.learning-hero h1{font-size:clamp(42px,10vw,66px)}.learning-preview-shell{transform:none}.learning-feature-art{min-height:390px}.learning-feature-cover-number{margin-top:38px}.learning-feature-motif{max-height:175px;margin-top:6px}.learning-feature-content{padding:27px}.learning-section-intro{display:block}.learning-section-intro>p{max-width:580px;margin:13px 0 0}.learning-section{padding:63px 0}.learning-principles-grid,.learning-partner-layout{gap:28px}}
@media(max-width:510px){.learning-wrap{width:calc(100% - 28px)}.learning-hero{padding:56px 0}.learning-hero h1{font-size:clamp(38px,11.7vw,54px);letter-spacing:-.06em}.learning-hero-lead{font-size:15px}.learning-hero-actions{align-items:stretch}.learning-hero-actions .learning-button{width:100%;justify-content:space-between}.learning-preview-top,.learning-preview-footer{padding:13px 14px}.learning-preview-tag{font-size:8px}.learning-preview-body{padding:20px 16px}.learning-preview-chart{padding:11px}.learning-preview-insight{padding:11px}.learning-feature-art{padding:24px;min-height:365px}.learning-feature-art h3{font-size:45px}.learning-feature-content{padding:24px 18px}.learning-feature-actions .learning-button{width:100%}.learning-tracks{grid-template-columns:1fr}.learning-track-card{min-height:0;padding:24px}.learning-partner-note{padding:22px}.learning-directory-box{padding:22px 16px}.learning-hero-footnote span+span::before{margin-right:8px}}
@media(max-width:350px){.learning-preview-brand{font-size:10px}.learning-preview-tag{font-size:7px}.learning-feature-art h3{font-size:37px}.learning-hero h1{font-size:38px}}
@media(prefers-reduced-motion:reduce){.learning-button,.learning-track-card{transition:none!important;transform:none!important}}
@media(forced-colors:active){.learning-button-primary{background:Highlight!important;color:HighlightText!important}.learning-preview-shell,.learning-feature-art,.learning-partner-section{border:1px solid CanvasText}}

/* RFellow Learn · course-advertising availability, clear and non-deceptive. */
.learning-partner-copy{min-width:0}
.learning-partner-benefits{display:flex;flex-wrap:wrap;gap:9px;margin:16px 0 26px}
.learning-partner-benefits span{font-size:11px;font-weight:740;color:#e0f8fd;border:1px solid rgba(169,224,233,.28);background:rgba(128,206,219,.07);border-radius:99px;padding:8px 11px}
.learning-partner-disclaimer{font-size:11px!important;line-height:1.65!important;max-width:550px!important;color:#b0ccdc!important;margin-top:14px!important}
.learning-advertise-cta{background:#e7f7fa!important;color:#14354f!important;border-color:#c4e6ee!important}
.learning-advertise-cta:hover{background:#fff!important}
.learning-advertise-preview{position:relative;overflow:hidden;background:linear-gradient(155deg,rgba(77,171,198,.13),rgba(255,255,255,.03))!important;border-color:rgba(163,224,230,.38)!important}
.learning-ad-space-illustration{display:grid;place-items:center;position:relative;height:130px;margin:20px 0;border:1px dashed rgba(168,223,233,.36);border-radius:12px;background:radial-gradient(ellipse at 50% 50%,rgba(97,195,211,.13),transparent 75%)}
.learning-ad-space-illustration>span:first-child{font-size:45px;font-weight:900;letter-spacing:-.09em;color:#a9e3e1}
.learning-ad-orbit{position:absolute;width:115px;height:115px;border:1px solid rgba(165,228,230,.35);border-radius:50%;transform:rotate(-25deg) scaleX(1.5)}
.learning-advertise-preview>strong{font-size:23px}
.learning-ad-slot-status{display:inline-flex!important;margin-top:18px;padding:8px 10px;border-radius:7px;border:1px solid rgba(141,221,202,.44);color:#a7ecdb!important;font-size:10px!important;font-weight:850;letter-spacing:.055em}
@media(max-width:510px){.learning-partner-benefits{gap:7px}.learning-partner-benefits span{font-size:10px}.learning-advertise-preview>strong{font-size:20px}}


/* Courses: partner invitation is visible immediately without turning the
   educational hero into an ad. Editorially reviewed, not instant checkout. */
.course-partner-invite{
  background:linear-gradient(112deg,#e6f2f7 0%,#eaf4f9 55%,#f1f7fb 100%);
  border-bottom:1px solid #d3e3ed;
}
.course-partner-invite-inner{
  display:flex;align-items:center;justify-content:space-between;gap:34px;
  padding-top:25px;padding-bottom:25px;
}
.course-partner-invite-copy{flex:1;min-width:0;max-width:790px}
.course-partner-invite-eyebrow{
  display:block;font-size:10px;letter-spacing:.12em;font-weight:840;line-height:1.5;
  color:#277c91;margin-bottom:6px;
}
.course-partner-invite h2{
  color:#1a3f5b;margin:0;font-size:clamp(18px,2.25vw,28px);font-weight:840;
  line-height:1.25;letter-spacing:-.035em;
}
.course-partner-invite p{color:#526f84;margin:7px 0 0;font-size:13px;line-height:1.65}
.course-partner-invite-cta{
  flex:0 0 auto;background:#1d648e!important;border:1px solid #1d648e!important;
  color:#fff!important;box-shadow:0 9px 23px rgba(34,99,150,.12);
  text-decoration:none;white-space:normal;text-align:center
}
.course-partner-invite-cta:hover{background:#145579!important}
html[data-theme="dark"] .course-partner-invite{
  background:linear-gradient(112deg,#183447 0%,#18354b 60%,#1b3046 100%);
  border-color:#3e6174;
}
html[data-theme="dark"] .course-partner-invite-eyebrow{color:#94e0d5}
html[data-theme="dark"] .course-partner-invite h2{color:#edf8ff}
html[data-theme="dark"] .course-partner-invite p{color:#c2d7e8}
html[data-theme="dark"] .course-partner-invite-cta{background:#2d718f!important;border-color:#589bb4!important;color:#fff!important}
@media(max-width:780px){
 .course-partner-invite-inner{align-items:flex-start;flex-direction:column;gap:16px;padding:22px 0}
 .course-partner-invite-cta{width:auto}
}
@media(max-width:510px){
 .course-partner-invite-inner{padding:18px 0}
 .course-partner-invite-cta{width:100%}
}