.sp-app{--sp-green:#176e61;--sp-ink:#153f45;min-height:100vh;background:#f8f7f0;color:var(--sp-ink);font-family:inherit;font-size:17px;line-height:1.6}.sp-app *{box-sizing:border-box}.sp-header{background:#fffef9;border-bottom:1px solid #cfdfd6;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:20px max(24px,calc((100vw - 1100px)/2))}.sp-brand{display:flex;align-items:center;gap:10px;font-size:24px;font-weight:800;text-decoration:none;color:#153f45;white-space:nowrap}.sp-brand b{display:grid;place-items:center;background:#176e61;color:white;border-radius:10px;width:38px;height:38px}.sp-header nav{display:flex;gap:24px}.sp-header nav a{color:#315c5d;text-decoration:none;padding:10px 0;font-weight:700}.sp-header nav a[aria-current]{color:#176e61;border-bottom:3px solid #176e61}.sp-main{max-width:1000px;margin:auto;padding:34px 28px 60px}.sp-title{margin:5px 0 28px}.sp-title h1,.sp-current h1,.sp-intro h1,.sp-result h1{font-size:clamp(30px,4vw,43px);line-height:1.2;letter-spacing:-.025em;margin:10px 0 18px}.sp-title p,.sp-current>p,.sp-intro>p,.sp-result>p{font-size:18px;line-height:1.7;max-width:750px}.sp-eyebrow{font-size:12px!important;letter-spacing:.1em;font-weight:800;color:#486d67;text-transform:uppercase}.sp-button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;gap:8px;padding:11px 19px;border:1px solid #acc8bb;border-radius:9px;background:#fffefa;color:#17474a;font:inherit;font-weight:700;text-decoration:none;cursor:pointer;line-height:1.5}.sp-button:hover{border-color:#176e61;background:#f0f6ee}.sp-button.sp-primary{background:#176e61;color:white;border-color:#176e61;box-shadow:0 3px 0 #0c5148}.sp-button.sp-primary:hover{background:#125a50}.sp-button:disabled{opacity:.55;cursor:default}.sp-welcome,.sp-intro,.sp-current,.sp-result,.sp-question{border:1px solid #cbded0;border-radius:20px;padding:32px;background:#fffef9}.sp-welcome{background:#edf3e7;text-align:center;padding:38px}.sp-welcome h2{font-size:29px;line-height:1.3;margin:18px 0 12px}.sp-welcome p{max-width:540px;margin:12px auto 22px}.sp-welcome .sp-primary{font-size:18px}.sp-path-art{display:flex;align-items:center;justify-content:center;max-width:330px;margin:0 auto 28px}.sp-path-art span{border:2px solid #8aae91;background:#fffef9;display:grid;place-items:center;width:50px;height:50px;border-radius:50%;font-size:23px;font-weight:800;color:#176e61}.sp-path-art span:nth-of-type(2){background:#176e61;color:white;border-color:#176e61;width:62px;height:62px}.sp-path-art i{height:2px;background:#b2c9b1;width:62px}.sp-home-options,.sp-actions{display:flex;flex-wrap:wrap;gap:12px;margin:25px 0}.sp-home-options{justify-content:center}.sp-small{font-size:14px!important;line-height:1.6;color:#53716b}.sp-footer{display:block;padding:20px;text-align:center;font-size:13px;color:#55726b}.sp-back{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:0 0 24px}.sp-back>span{font-size:12px;letter-spacing:.08em;font-weight:800}.sp-topic-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:26px 0}.sp-topic-grid>a{display:flex;align-items:center;gap:16px;background:#fffef9;border:1px solid #cddfd3;border-radius:12px;min-height:84px;padding:18px 20px;text-decoration:none;color:#183f45}.sp-topic-grid>a:hover{border-color:#176e61}.sp-topic-grid>a>span{display:grid;place-items:center;width:48px;height:48px;flex:none;background:#eef3e8;color:var(--sp-colour,#176e61);border-radius:10px;font-size:20px;font-weight:800}.sp-topic-grid>a>b{margin-left:auto}.sp-intro ul{padding-left:24px;line-height:1.8;margin:22px 0}.sp-intro .sp-button{margin-right:12px}.sp-note{background:#f1f3e6;border-left:3px solid #9aaa70;padding:16px 20px;font-size:16px!important;line-height:1.6}.sp-check-top{display:flex;justify-content:space-between;gap:20px;font-size:14px;font-weight:700;margin-bottom:20px}.sp-question fieldset{border:0;padding:0;margin:0;min-width:0}.sp-question legend{font-size:clamp(23px,3vw,31px);font-weight:750;line-height:1.55;max-width:100%;margin:6px 0 26px;padding:0;float:left;width:100%}.sp-question legend+*{clear:both}.sp-question legend:focus{outline:0}.sp-input-label{display:block;font-weight:700;margin:12px 0 8px}.sp-question input[type=text]{display:block;width:280px;max-width:100%;min-height:60px;border:2px solid #84a791;border-radius:9px;padding:12px 16px;font:inherit;font-size:24px;color:#153f45;background:white}.sp-answers{display:grid;gap:12px}.sp-answers label{display:flex;align-items:center;gap:14px;border:1px solid #a7c5b3;border-radius:9px;padding:16px 18px;min-height:60px;cursor:pointer}.sp-answers label:has(input:checked){background:#eef0fc;border-color:#766aa7}.sp-answers input{width:20px;height:20px;flex:none;accent-color:#665692}.sp-question #sp-error{color:#a13a29;font-size:16px}.sp-check-exit{display:flex;gap:16px;justify-content:space-between;flex-wrap:wrap;margin-top:24px}.sp-ribbon{margin:10px 0 28px}.sp-ribbon>div{display:flex;height:65px;border:2px solid #476f64;background:#fffef9}.sp-ribbon span{flex:1;border-right:1px solid #68897b}.sp-ribbon span:last-child{border:0}.sp-ribbon span.shaded{background:#257765}.sp-ribbon figcaption{font-size:14px;margin-top:10px;color:#45685f}.sp-skip{padding:22px;background:#edf3e7;border-radius:12px;margin:24px 0}.sp-skip h2{font-size:21px;margin:0 0 12px}.sp-skip li{margin:8px 0}.sp-skip label{display:flex;gap:12px;align-items:flex-start;margin-top:20px}.sp-skip input{width:20px;height:20px;flex:none;margin-top:3px;accent-color:#176e61}.sp-review{margin:20px 0;border:1px solid #cfddd1;border-radius:10px;background:#fffef9;padding:16px 20px}.sp-review summary{cursor:pointer;font-weight:700;min-height:28px}.sp-review li{display:flex;justify-content:space-between;gap:20px;padding:12px 0;border-bottom:1px solid #d6dfd0}.sp-review ul{padding:0;list-style:none}.sp-review p{line-height:1.7}.sp-review .sp-button{margin:6px 6px 6px 0}.sp-chapters{display:grid;gap:14px}.sp-chapters>a{display:flex;align-items:center;gap:20px;background:#fffef9;border:1px solid #cddfd3;border-radius:12px;padding:22px;text-decoration:none;color:#153f45}.sp-chapters>a:hover{border-color:#176e61}.sp-chapters>a>b{margin-left:auto}.sp-chapter-number{width:38px;height:38px;flex:none;border-radius:50%;background:#e7efe1;display:grid;place-items:center;font-weight:800}.sp-chapters h2{margin:0 0 8px;font-size:22px;line-height:1.3}.sp-chapters p{margin:0 0 9px;line-height:1.6}.sp-chapters small{color:#567467;font-size:14px}.sp-current{border-top:5px solid #176e61}.sp-progress{display:flex;align-items:center;gap:20px;margin:25px 0}.sp-progress progress{width:180px;height:10px;appearance:none;border:0;background:#d8e5d4;border-radius:20px;overflow:hidden}.sp-progress progress::-webkit-progress-bar{background:#d8e5d4}.sp-progress progress::-webkit-progress-value{background:#176e61}.sp-progress span{font-size:14px}.sp-progress b{margin-left:8px;color:#9c6818}.sp-next{margin:24px -32px -32px;padding:24px 32px 30px;background:#ecf2e6;border-radius:0 0 19px 19px}.sp-next h2{font-size:25px;line-height:1.35;margin:7px 0 18px}.sp-chapter-lessons{margin:30px 0}.sp-chapter-lessons>h2{font-size:22px}.sp-chapter-lessons ol{list-style:none;counter-reset:lesson;padding:0;display:grid;gap:10px}.sp-chapter-lessons li{display:flex;align-items:center;gap:18px;padding:20px;background:#fffef9;border:1px solid #ccdcd0;border-radius:10px;counter-increment:lesson}.sp-chapter-lessons li:before{content:counter(lesson);width:30px;height:30px;flex:none;display:grid;place-items:center;border:1px solid #9fbaa8;border-radius:50%;color:#477163;font-weight:750}.sp-chapter-lessons li>div{flex:1;min-width:0}.sp-chapter-lessons li a{font-size:18px;font-weight:700;text-decoration:none;color:#153f45}.sp-chapter-lessons li small{display:block;font-size:13px;color:#557068;margin-top:5px}.sp-chapter-lessons .sp-suggested{border-style:dashed;background:#f3f4ec}.sp-text{border:0;background:none;text-decoration:underline;color:#246b59;font:inherit;font-size:15px;min-height:44px;padding:9px;cursor:pointer}.sp-after{display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;padding:20px;border-left:3px solid #afbf8b;background:#eff2e7}.sp-after strong{font-size:18px}.sp-after>span:last-child{font-size:14px;color:#526d60}.sp-extra{padding:18px 0;border-bottom:1px solid #d6dfd0}.sp-extra>strong{display:block;margin-bottom:8px}.sp-skip-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.sp-app :focus-visible{outline:3px solid #2559da;outline-offset:4px}@media(max-width:650px){.sp-header{padding:16px;flex-wrap:wrap;gap:12px}.sp-brand{font-size:21px}.sp-header nav{width:100%;justify-content:space-between;gap:10px;font-size:15px}.sp-main{padding:25px 16px 40px}.sp-title h1,.sp-current h1,.sp-intro h1,.sp-result h1{font-size:31px}.sp-welcome,.sp-intro,.sp-current,.sp-result,.sp-question{padding:24px 20px;border-radius:15px}.sp-welcome{padding:28px 20px}.sp-topic-grid{grid-template-columns:1fr;gap:10px}.sp-topic-grid>a{min-height:70px;padding:12px 16px}.sp-topic-grid>a>span{width:42px;height:42px}.sp-actions{gap:12px}.sp-check-top{font-size:13px;gap:15px;align-items:flex-start}.sp-back{gap:10px;align-items:flex-start;flex-wrap:wrap}.sp-progress{flex-wrap:wrap;gap:10px}.sp-progress progress{width:100%}.sp-next{margin:24px -20px -24px;padding:23px 20px;border-radius:0 0 14px 14px}.sp-chapters>a{padding:18px 14px;gap:12px;align-items:flex-start}.sp-chapters h2{font-size:20px}.sp-chapter-lessons li{padding:16px 12px;gap:12px;flex-wrap:wrap}.sp-chapter-lessons li a{font-size:17px}.sp-review{padding:16px}.sp-review li{display:block}.sp-review li span{display:block;margin-top:8px;font-size:14px}.sp-skip-row{align-items:flex-start;flex-direction:column}.sp-question legend{font-size:24px}.sp-check-exit .sp-button{flex:1;font-size:15px}.sp-home-options .sp-button{width:100%}}@media(prefers-reduced-motion:reduce){.sp-app *{scroll-behavior:auto!important}}
.sp-main:focus{outline:0}

/* Chapter covers bring a little play to the course without changing its path. */
.sp-app{background:#f9f8f3}
.sp-header{border-bottom:1px solid #e1e5db}
.sp-brand b{border-radius:13px 13px 13px 4px;transform:rotate(-5deg);box-shadow:3px 3px 0 #e6ba66}
.sp-main{max-width:1060px}
.sp-course-title{display:flex;align-items:center;justify-content:space-between;gap:25px;margin-bottom:30px}
.sp-course-title>div{max-width:580px}
.sp-course-title h1{font-size:clamp(34px,4vw,48px);margin-bottom:12px}
.sp-course-title p{margin:8px 0}
.sp-course-title>.sp-button{flex:none}
.sp-cover-art{display:block;width:100%;height:100%;color:var(--sp-tone,#176e61)}
.sp-chapters{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.sp-chapters+p{margin-top:26px}
.sp-chapters>a.sp-chapter-card{display:flex;flex-direction:column;align-items:stretch;gap:0;padding:0;overflow:hidden;border:1px solid #d7dfd4;border-radius:21px;background:#fffefa;box-shadow:0 4px 0 #e8ebe2;transition:transform .18s,box-shadow .18s,border-color .18s}
.sp-chapters>a.sp-chapter-card:hover{transform:translateY(-3px);border-color:var(--sp-tone);box-shadow:0 7px 0 #e4e9de}
.sp-chapter-cover{height:145px;position:relative;display:flex;align-items:center;justify-content:space-between;padding:15px 25px;background:var(--sp-cover);border-bottom:1px solid #153f450b}
.sp-chapter-cover .sp-cover-art{width:66%;max-width:245px;height:140px;margin-right:-8px}
.sp-cover-label{display:flex;flex-direction:column;align-items:flex-start;gap:1px;color:var(--sp-tone);font-weight:800;font-size:10px;letter-spacing:.13em}
.sp-cover-label b{font-size:45px;line-height:1.1;letter-spacing:-.05em}
.sp-chosen-label{position:absolute;left:20px;bottom:10px;background:white;border:1px solid var(--sp-soft);color:#234d45;border-radius:20px;padding:1px 10px;font-size:11px;font-weight:750}
.sp-card-copy{padding:23px 25px 19px;display:flex;flex-direction:column;flex:1}
.sp-chapters .sp-card-copy h2{font-size:23px;margin:0 0 9px;letter-spacing:-.015em}
.sp-chapters .sp-card-copy p{font-size:16px;line-height:1.6;margin-bottom:20px}
.sp-card-progress{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:auto}
.sp-chapters .sp-card-progress small{font-size:12px;color:#526a62}
.sp-progress-dots{display:inline-flex;align-items:center;gap:4px}
.sp-progress-dots i{width:11px;height:11px;border:1px solid #a0b2a9;border-radius:50%;background:#fffefa}
.sp-progress-dots i.is-explored{background:var(--sp-tone);border-color:var(--sp-tone)}
.sp-card-open{display:flex;align-items:center;justify-content:space-between;border-top:1px solid #e3e7dc;margin-top:17px;padding-top:12px;font-size:14px;font-weight:800;color:var(--sp-tone)}
.sp-card-open b{display:grid;place-items:center;border-radius:50%;width:28px;height:28px;background:var(--sp-cover);font-size:19px;line-height:1}
.sp-topic-grid{gap:18px}
.sp-topic-grid>a{border-radius:18px;padding:12px 22px 12px 10px;min-height:110px;box-shadow:0 3px 0 #e8ebe2;transition:transform .18s}
.sp-topic-grid>a:hover{transform:translateY(-2px);border-color:var(--sp-tone)}
.sp-topic-grid>a>span.sp-topic-art{width:112px;height:86px;display:block;border-radius:13px;background:var(--sp-cover);overflow:hidden}
.sp-topic-grid>a>strong{font-size:19px;line-height:1.35}
.sp-topic-grid>a>b{color:var(--sp-tone)}
.sp-current{border-top:0;box-shadow:0 4px 0 #e8ebe2;background:linear-gradient(130deg,var(--sp-cover),#fffefa 75%)}
.sp-current-heading{display:flex;align-items:center;gap:24px}
.sp-current-heading>div:first-child{flex:1}
.sp-current-heading p:not(.sp-eyebrow){font-size:18px;line-height:1.7;margin-bottom:0}
.sp-current-heading h1{max-width:620px}
.sp-current-art{flex:none;width:230px;height:165px}
.sp-current .sp-eyebrow{color:var(--sp-tone)}
.sp-current .sp-progress progress{height:12px;border:2px solid white;box-shadow:0 0 0 1px #cedacb}
.sp-next{background:#fffefa;border-top:1px solid #d8e1d4}
.sp-next>.sp-eyebrow{display:inline-block;padding:3px 10px;background:var(--sp-cover);border-radius:6px}
.sp-chapter-lessons ol{gap:12px;position:relative}
.sp-chapter-lessons li{position:relative;border-radius:14px;border-color:#d6dfd2}
.sp-chapter-lessons li:before{width:36px;height:36px;background:#f0f4e9;border:0}
.sp-chapter-lessons li:not(:last-child):after{content:'';position:absolute;left:37px;top:100%;width:2px;height:13px;background:#c9d9cb}
.sp-chapter-lessons .sp-up-next{border:2px solid #408773;background:#f1f7ee;box-shadow:0 3px 0 #e0eadd}
.sp-chapter-lessons .sp-up-next:before{color:white;background:#176e61}
.sp-chapter-lessons .sp-explored:before{background:#d9ebd9;color:#176e61}
.sp-after{border-radius:12px;background:#ecefdf;border:1px dashed #a4b48f}
.sp-welcome{background:radial-gradient(ellipse at top left,#e1edda,transparent 55%),radial-gradient(ellipse at bottom right,#f6dfb1,transparent 55%),#f1f4e7;box-shadow:0 4px 0 #e3e8d9;border-color:#d0dbbd}
.sp-path-art{max-width:365px;margin-top:8px}
.sp-path-art span{box-shadow:0 4px 0 #c6d6b7;border:0;width:61px;height:61px;transform:rotate(-8deg);border-radius:20px}
.sp-path-art span:nth-of-type(2){width:77px;height:77px;transform:rotate(6deg);box-shadow:0 5px 0 #0d5046}
.sp-path-art span:last-child{background:#f2c869;transform:rotate(-6deg);color:#624b19;box-shadow:0 4px 0 #d7ad51}
.sp-path-art i{background:none;border-top:3px dotted #87a575;width:45px}
@media(max-width:800px){.sp-current-art{width:170px}.sp-chapter-cover{padding:15px 20px}.sp-course-title{align-items:flex-start}.sp-course-title>.sp-button{margin-top:32px}.sp-topic-grid>a>span.sp-topic-art{width:85px}}
@media(max-width:650px){.sp-main{padding-top:20px}.sp-course-title{display:block;margin-bottom:25px}.sp-course-title>.sp-button{margin-top:12px}.sp-course-title h1{font-size:36px}.sp-course-title p{font-size:16px}.sp-chapters{grid-template-columns:1fr;gap:22px}.sp-chapter-cover{height:120px;padding:12px 22px}.sp-chapter-cover .sp-cover-art{height:122px;max-width:225px}.sp-cover-label b{font-size:40px}.sp-card-copy{padding:20px 22px 17px}.sp-chapters .sp-card-copy h2{font-size:23px}.sp-chapters .sp-card-copy p{margin-bottom:16px}.sp-topic-grid>a>span.sp-topic-art{width:98px;height:76px}.sp-topic-grid>a{padding:9px 16px 9px 9px;gap:14px;min-height:96px}.sp-topic-grid>a>strong{font-size:18px}.sp-current{padding-top:0;overflow:hidden}.sp-current-heading{flex-direction:column-reverse;gap:0;align-items:stretch}.sp-current-art{height:105px;width:180px;align-self:flex-end;margin:6px -6px -10px 0}.sp-current-heading h1{font-size:30px;margin-top:8px}.sp-current-heading p:not(.sp-eyebrow){font-size:16px}.sp-current-heading .sp-eyebrow{margin-top:0}.sp-chapter-lessons li:not(:last-child):after{left:29px}.sp-path-art span{width:51px;height:51px}.sp-path-art span:nth-of-type(2){width:66px;height:66px}}
@media(prefers-reduced-motion:reduce){.sp-chapters>a.sp-chapter-card,.sp-topic-grid>a{transition:none}.sp-chapters>a.sp-chapter-card:hover,.sp-topic-grid>a:hover{transform:none}}

.sp-givens {margin:1rem 0 1.5rem;padding:1rem;background:#f0f5eb;border-radius:.75rem}.sp-givens svg {display:block;width:100%;max-width:38rem;margin:auto}.sp-givens table {width:100%;border-collapse:collapse}.sp-givens th,.sp-givens td {padding:.6rem;text-align:left;border:1px solid #cad9d0;overflow-wrap:anywhere}.sp-givens .sy-step-count {display:none}
/* Whole lesson cards mirror the explored/current colours used inside lessons. */
.sp-app .sp-chapter-lessons li.sp-explored{background:#dcfce7;border:2px solid #15803d}
.sp-app .sp-chapter-lessons li.sp-explored::before{background:#15803d;color:#fff}
.sp-app .sp-chapter-lessons li.sp-explored small{color:#166534;font-weight:600}
.sp-app .sp-chapter-lessons li.sp-up-next{background:#f3e8ff;border:2px solid #7e22ce}
.sp-app .sp-chapter-lessons li.sp-up-next::before{background:#7e22ce;color:#fff}
.sp-app .sp-chapter-lessons li.sp-up-next small{color:#6b21a8;font-weight:600}