/* Only WP56094. Existing site header/footer keep their shared styles. */
#rlc-ferra-lesson{--rlf-ink:#20212a;--rlf-muted:#666473;--rlf-purple:#68409a;--rlf-line:#e8e5ed;--rlf-soft:#f7f3fd;--rlf-white:#fff;color:var(--rlf-ink);background:#faf9fc;font-family:inherit;line-height:1.6;padding:150px 0 72px;min-width:0}
#rlc-ferra-lesson *{box-sizing:border-box}
#rlc-ferra-lesson .rlf-shell{max-width:1220px;width:100%;padding:0 28px;margin:0 auto}
#rlc-ferra-lesson a{color:inherit;text-decoration:none}
#rlc-ferra-lesson a:focus-visible,#rlc-ferra-lesson summary:focus-visible{outline:3px solid #7144ad;outline-offset:4px;border-radius:6px}
#rlc-ferra-lesson .rlf-breadcrumbs{display:flex;flex-wrap:wrap;gap:6px 12px;align-items:center;font-size:14px;color:var(--rlf-muted);margin-bottom:22px}
#rlc-ferra-lesson .rlf-breadcrumbs a:hover{color:var(--rlf-purple);text-decoration:underline;text-underline-offset:4px}
#rlc-ferra-lesson .rlf-breadcrumbs>span{color:#8f899b}
#rlc-ferra-lesson .rlf-hero{position:relative;inset:auto;z-index:auto;width:100%;display:flex;justify-content:space-between;gap:20px;padding:36px 42px;margin:0 0 28px;background:#eee6fa;border:1px solid #e5d9f5;border-radius:24px;overflow:hidden}
#rlc-ferra-lesson .rlf-hero-copy{max-width:780px;position:relative;z-index:1}
#rlc-ferra-lesson .rlf-eyebrow{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;font-weight:600;letter-spacing:.035em;color:#655175;margin:0 0 12px}
#rlc-ferra-lesson .rlf-orbit-dot{width:9px;height:9px;border-radius:50%;background:#79509e;box-shadow:0 0 0 4px #e2d5f3;display:inline-block;margin:0 4px}
#rlc-ferra-lesson h1{font-family:inherit;font-size:clamp(30px,3.1vw,43px);font-weight:700;line-height:1.14;letter-spacing:-.035em;margin:0 0 17px;color:#24212d;max-width:750px}
#rlc-ferra-lesson .rlf-intro{font-size:18px;line-height:1.55;color:#5a5166;max-width:660px;margin:0}
#rlc-ferra-lesson .rlf-intro span{white-space:nowrap;font-weight:600}
#rlc-ferra-lesson .rlf-hero-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px}
#rlc-ferra-lesson .rlf-hero-tags>span{border:1px solid #d8c7ec;border-radius:20px;padding:4px 11px;font-size:12px;font-weight:600;background:#f5effd;color:#695278}
#rlc-ferra-lesson .rlf-hero-art{position:relative;flex:0 0 205px;min-height:170px;align-self:center}
#rlc-ferra-lesson .rlf-planet{position:absolute;width:130px;height:130px;top:27px;left:37px;border-radius:50%;background:radial-gradient(circle at 30% 27%,#faf5ff 0,#dac5f2 38%,#ad80d5 77%,#9367be 100%);box-shadow:13px 16px 35px #8d66ac20}
#rlc-ferra-lesson .rlf-orbit{position:absolute;width:216px;height:96px;left:-3px;top:51px;border:1px solid #c4a7de;border-radius:50%;transform:rotate(-32deg)}
#rlc-ferra-lesson .rlf-orbit-two{transform:rotate(43deg);opacity:.48}
#rlc-ferra-lesson .rlf-star{position:absolute;top:1px;right:7px;color:#9872bf;font-size:27px}
#rlc-ferra-lesson .rlf-art-word{position:absolute;left:41px;top:72px;z-index:1;color:#573773;font-size:35px;font-weight:700;letter-spacing:-1px;transform:rotate(-10deg);width:128px;text-align:center}
#rlc-ferra-lesson .rlf-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:28px;align-items:start}
#rlc-ferra-lesson .rlf-sidebar{position:sticky;top:126px;min-width:0}
#rlc-ferra-lesson .rlf-course-nav{background:var(--rlf-white);border:1px solid var(--rlf-line);border-radius:18px;padding:19px 10px 12px}
#rlc-ferra-lesson .rlf-nav-label{font-size:11px;letter-spacing:.1em;font-weight:700;color:#77717e;margin:0 12px 12px}
#rlc-ferra-lesson .rlf-steps{list-style:none;padding:0;margin:0}
#rlc-ferra-lesson .rlf-steps li{margin:3px 0;list-style:none;padding:0}
#rlc-ferra-lesson .rlf-steps a{display:flex;gap:11px;align-items:center;min-height:46px;padding:10px 11px;border-radius:11px;font-size:14px;line-height:1.35;color:#56525f;transition:background .15s ease}
#rlc-ferra-lesson .rlf-steps a:hover{background:#f6f3f9}
#rlc-ferra-lesson .rlf-steps a[aria-current]{background:#eee5f9;color:#603b8c;font-weight:700}
#rlc-ferra-lesson .rlf-step-number{font-size:11px;font-weight:600;flex:0 0 24px;height:24px;border-radius:7px;background:#f4f2f6;display:flex;align-items:center;justify-content:center;color:#77717e}
#rlc-ferra-lesson [aria-current] .rlf-step-number{background:#7952a4;color:white}
#rlc-ferra-lesson .rlf-current-dot{width:5px;height:5px;flex:0 0 5px;border-radius:50%;background:#7952a4;margin-left:auto}
#rlc-ferra-lesson .rlf-outline{padding:26px 11px 12px;display:flex;flex-direction:column;gap:0}
#rlc-ferra-lesson .rlf-outline .rlf-nav-label{margin-left:0;margin-bottom:7px}
#rlc-ferra-lesson .rlf-outline a{font-size:14px;color:#6d6776;padding:7px 0;min-height:36px}
#rlc-ferra-lesson .rlf-outline a:hover{color:var(--rlf-purple);text-decoration:underline;text-underline-offset:4px}
#rlc-ferra-lesson .rlf-mobile-nav{display:none}
#rlc-ferra-lesson .rlf-article{min-width:0}
#rlc-ferra-lesson .rlf-section{padding:30px 34px;background:var(--rlf-white);border:1px solid var(--rlf-line);border-radius:20px;margin:0 0 22px;scroll-margin-top:145px}
#rlc-ferra-lesson .rlf-section-label{font-size:11px;line-height:1.4;letter-spacing:.105em;font-weight:700;color:#8a749d;margin:0 0 9px}
#rlc-ferra-lesson h2{font-family:inherit;font-size:27px;line-height:1.25;font-weight:700;letter-spacing:-.02em;color:var(--rlf-ink);margin:0 0 14px}
#rlc-ferra-lesson h3{font-family:inherit;font-size:18px;line-height:1.4;font-weight:700;color:var(--rlf-ink);margin:26px 0 12px}
#rlc-ferra-lesson p{font-size:17px;line-height:1.65;margin:0 0 17px}
#rlc-ferra-lesson .rlf-lead{color:var(--rlf-muted);margin-bottom:23px}
#rlc-ferra-lesson strong{font-weight:700}
#rlc-ferra-lesson .rlf-table-wrap{border:1px solid var(--rlf-line);border-radius:13px;overflow:hidden;margin:21px 0}
#rlc-ferra-lesson table{width:100%;border-collapse:collapse;table-layout:fixed;margin:0;font-size:16px;line-height:1.45;background:#fff}
#rlc-ferra-lesson th,#rlc-ferra-lesson td{padding:13px 16px;text-align:left;vertical-align:top;border:0;border-bottom:1px solid #efedf3;color:var(--rlf-ink);font-weight:400;overflow-wrap:break-word}
#rlc-ferra-lesson thead th{background:#f5f2f9;color:#726080;font-size:12px;font-weight:700;letter-spacing:.03em;padding-top:11px;padding-bottom:11px}
#rlc-ferra-lesson tbody tr:last-child th,#rlc-ferra-lesson tbody tr:last-child td{border-bottom:0}
#rlc-ferra-lesson .rlf-letters th:first-child{width:13%}
#rlc-ferra-lesson .rlf-letters th:nth-child(2){width:48%}
#rlc-ferra-lesson .rlf-letters tbody th{font-weight:700;font-size:19px;color:#5a3b80;white-space:nowrap}
#rlc-ferra-lesson .rlf-sound{font-weight:600;display:block;margin-bottom:3px;color:#3f354b;white-space:nowrap}
#rlc-ferra-lesson .rlf-pronunciation-tip{display:block;font-size:14px;color:#74707b;line-height:1.45}
#rlc-ferra-lesson .rlf-word{display:inline-block;white-space:nowrap;margin:0 8px 3px 0}
#rlc-ferra-lesson .rlf-word strong{color:#6b4295}
#rlc-ferra-lesson .rlf-note{border-left:3px solid #b294d2;background:#f8f5fc;border-radius:0 10px 10px 0;padding:15px 18px;margin:20px 0 0;font-size:15px;line-height:1.6;color:#62566e}
#rlc-ferra-lesson .rlf-note strong{color:#4c355e}
#rlc-ferra-lesson .rlf-formula{display:flex;align-items:center;flex-wrap:wrap;gap:10px;border:1px solid #e7dff1;background:#faf7fe;border-radius:12px;padding:18px;margin:21px 0;font-size:16px;line-height:1.5}
#rlc-ferra-lesson .rlf-formula>strong{background:#e9ddf6;color:#5e3988;border-radius:8px;padding:6px 11px;font-size:19px}
#rlc-ferra-lesson .rlf-formula>span{color:#5f5869}
#rlc-ferra-lesson .rlf-formula .rlf-plus{color:#a697b7;font-weight:400}
#rlc-ferra-lesson .rlf-examples{list-style:none;margin:18px 0 24px;padding:0;display:grid;gap:10px}
#rlc-ferra-lesson .rlf-examples li{display:flex;gap:15px;justify-content:space-between;align-items:baseline;list-style:none;border-bottom:1px solid #f0edf5;padding:10px 0;font-size:17px;line-height:1.5}
#rlc-ferra-lesson .rlf-examples li>span:first-child{font-size:18px}
#rlc-ferra-lesson .rlf-examples li>span:last-child{font-size:15px;color:#77707e;text-align:right}
#rlc-ferra-lesson .rlf-examples strong{color:#684098}
#rlc-ferra-lesson .rlf-be-table th:first-child{width:42%}
#rlc-ferra-lesson .rlf-be-table tbody th{font-weight:600}
#rlc-ferra-lesson .rlf-be-table small{display:block;color:#7a7381;font-size:13px;font-weight:400;margin-top:3px}
#rlc-ferra-lesson .rlf-be-table td strong{color:#684098;font-weight:700}
#rlc-ferra-lesson .rlf-question-example{border:1px solid var(--rlf-line);border-radius:13px;margin:14px 0;padding:18px 20px;display:grid;grid-template-columns:1fr 26px 1fr;align-items:center;gap:12px}
#rlc-ferra-lesson .rlf-question-example p{font-size:18px;line-height:1.45;margin:0}
#rlc-ferra-lesson .rlf-question-example small{display:block;color:#79717f;font-size:14px;margin-top:6px}
#rlc-ferra-lesson .rlf-question-example strong{color:#684098}
#rlc-ferra-lesson .rlf-question-arrow{color:#ac93c5;font-size:23px}
#rlc-ferra-lesson .rlf-next-card{display:flex;justify-content:space-between;align-items:center;gap:23px;border:1px solid #ddd1eb;background:#f1eafa;padding:25px 28px;border-radius:18px;margin-top:28px}
#rlc-ferra-lesson .rlf-next-card .rlf-eyebrow{font-size:10px;margin-bottom:7px}
#rlc-ferra-lesson .rlf-next-card h2{font-size:23px;margin-bottom:7px}
#rlc-ferra-lesson .rlf-next-card p:last-child{font-size:14px;color:#72657d;margin:0}
#rlc-ferra-lesson .rlf-primary{display:inline-flex;align-items:center;justify-content:center;gap:17px;flex-shrink:0;min-height:48px;padding:12px 18px;border-radius:10px;background:#202129;color:white;font-size:14px;font-weight:600;line-height:1.5;transition:background .15s ease}
#rlc-ferra-lesson .rlf-primary:hover{background:#473454}
#rlc-ferra-lesson .rlf-bottom-nav{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:17px}
#rlc-ferra-lesson .rlf-bottom-nav a{font-size:14px;color:#706879;min-height:44px;display:inline-flex;align-items:center;gap:8px;padding:9px 0}
#rlc-ferra-lesson .rlf-bottom-nav a:hover{color:#684098;text-decoration:underline;text-underline-offset:4px}
@media(max-width:1050px){#rlc-ferra-lesson .rlf-layout{grid-template-columns:215px minmax(0,1fr);gap:20px}#rlc-ferra-lesson .rlf-section{padding:27px 25px}#rlc-ferra-lesson .rlf-hero{padding:30px}#rlc-ferra-lesson .rlf-hero-art{flex-basis:175px;transform:scale(.85);transform-origin:center right}#rlc-ferra-lesson .rlf-next-card{align-items:flex-start;flex-direction:column}}
@media(max-width:800px){#rlc-ferra-lesson{padding-top:125px}#rlc-ferra-lesson .rlf-shell{padding:0 22px}#rlc-ferra-lesson .rlf-hero{padding:28px;margin-bottom:19px}#rlc-ferra-lesson .rlf-hero-art{display:none}#rlc-ferra-lesson .rlf-layout{display:block}#rlc-ferra-lesson .rlf-sidebar{display:none}#rlc-ferra-lesson .rlf-mobile-nav{display:block;background:white;border:1px solid var(--rlf-line);border-radius:13px;margin:0 0 20px;overflow:hidden}#rlc-ferra-lesson .rlf-mobile-nav summary{display:flex;align-items:center;gap:12px;padding:14px 18px;min-height:52px;cursor:pointer;font-size:14px;font-weight:600;list-style:none}#rlc-ferra-lesson summary::-webkit-details-marker{display:none}#rlc-ferra-lesson .rlf-mobile-nav summary:after{content:'⌄';margin-left:auto;font-size:19px;line-height:1;color:#7a658d}#rlc-ferra-lesson .rlf-mobile-nav[open] summary:after{content:'⌃'}#rlc-ferra-lesson .rlf-mobile-current{font-size:12px;font-weight:400;color:#87689f}#rlc-ferra-lesson .rlf-mobile-nav nav{padding:0 10px 10px;border-top:1px solid #eee8f5}#rlc-ferra-lesson .rlf-mobile-nav .rlf-steps{display:grid;grid-template-columns:1fr 1fr;padding-top:8px}#rlc-ferra-lesson .rlf-next-card{flex-direction:row;align-items:center}#rlc-ferra-lesson .rlf-section{scroll-margin-top:125px}}
@media(max-width:540px){#rlc-ferra-lesson{padding:118px 0 42px}#rlc-ferra-lesson .rlf-shell{padding:0 14px}#rlc-ferra-lesson .rlf-breadcrumbs{font-size:12px;gap:3px 7px;margin-bottom:16px}#rlc-ferra-lesson .rlf-breadcrumbs a{padding:4px 0}#rlc-ferra-lesson .rlf-hero{padding:23px 21px;border-radius:18px;margin-bottom:16px}#rlc-ferra-lesson h1{font-size:32px;margin-bottom:13px}#rlc-ferra-lesson .rlf-eyebrow{font-size:10px;gap:6px;letter-spacing:.02em}#rlc-ferra-lesson .rlf-intro{font-size:16px;line-height:1.55}#rlc-ferra-lesson .rlf-hero-tags{margin-top:17px;gap:6px}#rlc-ferra-lesson .rlf-hero-tags>span{font-size:10px;padding:4px 9px}#rlc-ferra-lesson .rlf-mobile-nav{margin-bottom:16px}#rlc-ferra-lesson .rlf-mobile-nav summary{padding:13px 15px}#rlc-ferra-lesson .rlf-mobile-nav .rlf-steps{grid-template-columns:1fr}#rlc-ferra-lesson .rlf-section{padding:23px 19px;border-radius:16px;margin-bottom:16px}#rlc-ferra-lesson h2{font-size:25px;line-height:1.2;margin-bottom:13px}#rlc-ferra-lesson p{font-size:16px;line-height:1.65}#rlc-ferra-lesson .rlf-section-label{font-size:10px}#rlc-ferra-lesson .rlf-lead{margin-bottom:19px}#rlc-ferra-lesson .rlf-table-wrap{margin:18px -7px;border-radius:10px}#rlc-ferra-lesson table{font-size:14px;line-height:1.45}#rlc-ferra-lesson th,#rlc-ferra-lesson td{padding:11px 8px}#rlc-ferra-lesson thead th{font-size:10px;padding:10px 8px}#rlc-ferra-lesson .rlf-letters th:first-child{width:18%}#rlc-ferra-lesson .rlf-letters th:nth-child(2){width:45%}#rlc-ferra-lesson .rlf-letters thead th:first-child{white-space:nowrap}#rlc-ferra-lesson .rlf-letters tbody th{font-size:16px}#rlc-ferra-lesson .rlf-sound{font-size:13px;white-space:normal}#rlc-ferra-lesson .rlf-pronunciation-tip{font-size:12px;line-height:1.45}#rlc-ferra-lesson .rlf-word{margin-right:5px}#rlc-ferra-lesson .rlf-note{font-size:14px;padding:13px 14px}#rlc-ferra-lesson .rlf-formula{gap:7px;font-size:14px;padding:14px 12px}#rlc-ferra-lesson .rlf-formula>strong{font-size:16px;padding:5px 8px}#rlc-ferra-lesson .rlf-examples li{display:block;padding:9px 0}#rlc-ferra-lesson .rlf-examples li>span{display:block}#rlc-ferra-lesson .rlf-examples li>span:last-child{text-align:left;margin-top:3px;font-size:13px}#rlc-ferra-lesson .rlf-question-example{grid-template-columns:1fr;padding:15px;gap:7px}#rlc-ferra-lesson .rlf-question-arrow{font-size:18px;transform:rotate(90deg);width:22px;text-align:center;margin:2px 0}#rlc-ferra-lesson .rlf-question-example p{font-size:18px}#rlc-ferra-lesson .rlf-question-example small{font-size:13px;margin-top:3px}#rlc-ferra-lesson .rlf-next-card{padding:23px 20px;display:block;border-radius:16px;margin-top:20px}#rlc-ferra-lesson .rlf-next-card h2{font-size:24px}#rlc-ferra-lesson .rlf-primary{display:flex;width:100%;margin-top:18px;min-height:50px}#rlc-ferra-lesson .rlf-bottom-nav{gap:0;margin-top:10px}#rlc-ferra-lesson .rlf-bottom-nav a{font-size:12px}}
#rlc-ferra-lesson .rlf-site-aside{margin-top:14px;max-width:100%;overflow-wrap:break-word}
#rlc-ferra-lesson .rlf-premium{margin-top:30px;padding:27px 30px;border:1px solid var(--rlf-line);border-radius:18px;background:#fff}
#rlc-ferra-lesson .rlf-premium h2{font-size:23px;margin-bottom:10px}
#rlc-ferra-lesson .rlf-premium p:not(.rlf-section-label){font-size:15px;color:#746b7c}
#rlc-ferra-lesson .rlf-premium ul{display:grid;grid-template-columns:1fr 1fr;gap:11px 24px;margin:20px 0;padding:0;list-style:none}
#rlc-ferra-lesson .rlf-premium li{font-size:14px;line-height:1.5;color:#665c70;padding-left:19px;position:relative;list-style:none}
#rlc-ferra-lesson .rlf-premium li:before{content:'✓';position:absolute;left:0;color:#80559e}
#rlc-ferra-lesson .rlf-premium-link{display:inline-flex;align-items:center;gap:15px;min-height:44px;font-size:14px;font-weight:600;color:#6a4294}
#rlc-ferra-lesson .rlf-premium-link:hover{text-decoration:underline;text-underline-offset:4px}
@media(max-width:540px){#rlc-ferra-lesson .rlf-premium{padding:22px 20px}#rlc-ferra-lesson .rlf-premium ul{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){#rlc-ferra-lesson a{transition:none}}