/* Course detail pages: one article system shared by all courses; scoped to .course-article. */
.course-article{background:#fff;font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;color:#344f5e;-webkit-font-smoothing:antialiased}
.course-article .reading-width{width:min(760px,calc(100% - 48px));margin-inline:auto}
.course-article .article-opening{padding:42px 0 39px;background:linear-gradient(130deg,#f2faff 0%,#fbfdfc 75%,#fffbf1 100%);border-bottom:1px solid #e2edf0}
.course-article .article-kicker{font-size:16px;font-weight:700;line-height:1.8;color:#176f98;margin:0 0 24px}
.course-article .article-kicker span{display:block;font-size:12px;font-weight:500;letter-spacing:.025em;color:#6b818c;margin-top:6px}
.course-article h1{font-size:46px;line-height:1.4;letter-spacing:-.025em;color:#1d465c;margin:0 0 24px;text-wrap:balance}
.course-article h1 em{font-style:normal;color:#147fa6}
.course-article h1 em span{display:inline-block;max-width:100%;text-wrap:balance}
.course-article .article-lead{font-size:20px;line-height:1.9;color:#34586a;margin:0 0 18px}
.course-article .article-intro{font-size:16px;line-height:1.95;margin:0;color:#536c78}
.course-article .article-intro strong{font-weight:500;color:#365666}
.course-article .opening-meta{display:flex;align-items:baseline;gap:21px;margin:28px 0 0;font-size:14px;color:#486776;flex-wrap:wrap}
.course-article .opening-meta b{font-size:18px;font-weight:650;color:#265b74;margin-left:6px}
.course-article .opening-meta .price-label{font-size:11px;color:#778a94}
.course-article .article-contents{display:flex;gap:16px 25px;flex-wrap:wrap;margin-top:20px;font-size:13px;line-height:1.8}
.course-article .article-contents a,.course-article .article-body a:not(.site-button){color:#176f98;text-decoration:underline;text-underline-offset:5px;text-decoration-color:#a6cbdc}
.course-article .reading-section{padding:48px 0;border-bottom:1px solid #e0e8eb;scroll-margin-top:20px}
.course-article .section-index{font-size:12px;line-height:1.7;color:#74909d;letter-spacing:.04em;margin:0 0 12px}
.course-article .article-body h2{font-size:32px;line-height:1.5;font-weight:700;color:#234d63;margin:0 0 22px;letter-spacing:-.025em;text-wrap:balance}
.course-article .article-body p{font-size:16px;line-height:1.95;margin:0 0 18px}
.course-article .article-body strong{font-weight:650;color:#215773}
.course-article .article-body .section-index{font-size:12px;margin-bottom:12px;line-height:1.7}
.course-article .reading-section>p:last-child{margin-bottom:0}
.course-article figure{margin:27px 0}
.course-article figcaption{font-size:12px;line-height:1.8;color:#758895}
.course-article .reading-note{font-size:14px!important;line-height:1.9!important;color:#6b7c87;margin-top:23px!important}
.course-article .project-example{border:1px solid #d0e1e9;border-radius:5px;background:#fbfdfe;padding:25px 30px 21px}
.course-article .example-head{display:flex;justify-content:space-between;gap:15px;font-size:12px;color:#6d8997;margin-bottom:21px}
.course-article .article-body .example-directions{font-size:14px;color:#667f8b;line-height:1.9}
.course-article .example-route{display:flex;gap:16px;align-items:center;font-size:13px;line-height:1.8;margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid #dce9ee}
.course-article .example-route i{font-style:normal;color:#8faebc}
.course-article .project-example h3{font-size:23px;font-weight:700;color:#225d78;line-height:1.5;margin:0 0 23px}
.course-article .project-story{margin:0}
.course-article .project-story>div{display:grid;grid-template-columns:112px 1fr;gap:20px;margin-bottom:19px}
.course-article .project-story dt{font-size:14px;line-height:1.9;color:#2b6a86;font-weight:650}
.course-article .project-story dd{font-size:15px;line-height:1.9;margin:0;color:#516b79}
.course-article .example-takeaway{border-left:3px solid #e5ae5b;padding:8px 0 8px 17px;margin:25px 0 19px!important;color:#6f593a;font-size:17px!important}
.course-article .example-takeaway strong{color:#916120}
.course-article .article-mentor-rail{display:flex;overflow-x:auto;scroll-snap-type:x proximity;overscroll-behavior-x:contain;scrollbar-width:thin;scrollbar-color:#a8c4d1 #edf4f7;gap:17px;width:calc(100% + 160px);margin:14px -80px 20px;padding-bottom:12px}
.course-article .mentor{flex:0 0 calc((100% - 34px)/3);scroll-snap-align:start;min-width:0;border-top:2px solid #91bfd3;background:#f6fafc;padding:20px 20px 18px}
.course-article .mentor-heading{display:flex;align-items:baseline;justify-content:space-between;gap:10px}
.course-article .mentor-position{font-size:10px;line-height:1.7;color:#75909c;white-space:nowrap}
.course-article .mentor h3{font-size:21px;line-height:1.5;margin:0 0 10px;color:#245b75}
.course-article .mentor .expertise{font-size:12px;line-height:1.8;color:#60808f;min-height:43px;margin-bottom:17px}
.course-article .mentor .bio{font-size:14px;line-height:1.95;margin:0;color:#526c79}
.course-article .mentor .bio p{font-size:inherit;line-height:inherit;margin:0}
.course-article .mentor-tags{display:flex;gap:8px;flex-wrap:wrap;list-style:none;padding:0;margin:14px 0 0;color:#5d8193;font-size:11px;line-height:1.7}
.course-article .mentor-tags li{padding:2px 7px;border:1px solid #d9e6ec;border-radius:3px}
.course-article .article-body .mentor-note{font-size:13px;line-height:1.9;color:#6b818d;margin-top:-3px}
.course-article .article-body .mentor-hint{display:block;font-size:12px;line-height:1.8;color:#75909c;margin:20px 0 10px}
.course-article .article-details{font-size:14px;line-height:1.9;margin-top:22px;color:#526c79}
.course-article .article-details summary{color:#356b85;cursor:pointer;width:fit-content;padding:5px 0}
.course-article .article-details>div{padding-top:12px}
.course-article .article-details p{font-size:14px}
.course-article .article-inline-link{font-size:14px!important;margin-top:16px!important}
.course-article .article-plans{display:grid;grid-template-columns:1fr 1fr;gap:22px;width:calc(100% + 80px);margin:28px -40px 23px}
.course-article .article-plan{min-width:0;border:1px solid #d5e4ea;border-top:3px solid #6cacc9;padding:22px 25px 0;display:flex;flex-direction:column}
.course-article .plan-b{border-top-color:#74b49d}
.course-article .plan-top{display:flex;justify-content:space-between;align-items:center;gap:15px}
.course-article .plan-top h3{font-size:18px;line-height:1.5;color:#256582;margin:0}
.course-article .plan-top p{margin:0;display:flex;align-items:baseline;gap:5px;white-space:nowrap}
.course-article .plan-top small{font-size:11px;color:#7a8c95}
.course-article .plan-top strong{font-size:28px;line-height:1.3;color:#246d8c;font-weight:700}
.course-article .plan-top span{font-size:12px;color:#6a8490}
.course-article .plan-b .plan-top h3,.course-article .plan-b .plan-top strong{color:#357e66}
.course-article .plan-focus{font-size:16px!important;line-height:1.7!important;color:#365f73;font-weight:650;margin:19px 0 18px!important}
.course-article .article-plan dl{margin:0 0 20px;flex:1}
.course-article .article-plan dt{font-size:12px;line-height:1.8;color:#7c8f98;margin-bottom:5px}
.course-article .article-plan dd{font-size:14px;line-height:1.9;color:#496574;margin:0 0 16px}
.course-article .article-plan dd:last-child{margin-bottom:0}
.course-article .plan-time{font-size:12px!important;line-height:1.9!important;padding-top:16px;border-top:1px solid #e0eaee;margin:0 0 16px!important;color:#6a818d;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.course-article .plan-time b{font-weight:600;color:#315f76}
.course-article .plan-refund{font-size:12px!important;line-height:1.85!important;color:#6d7d83;padding:13px 0 14px;margin:0!important;border-top:1px solid #e0eaee}
.course-article .article-refund{background:#fff9ed;border-left:3px solid #e7b365;padding:22px 25px}
.course-article .article-refund h3{font-size:21px;line-height:1.55;font-weight:700;margin:0 0 14px;color:#896225}
.course-article .article-refund h3 br{display:none}
.course-article .article-refund p{font-size:15px;line-height:1.95;color:#6e624f;margin:0}
.course-article .article-refund strong{color:#946225}
.course-article .article-refund-path{font-size:12px!important;margin-top:17px!important;line-height:1.9!important;color:#9a7945!important}
.course-article .article-refund-path span{margin-inline:7px}
.course-article .article-service-note{margin-top:27px}
.course-article .article-service-note h3{font-size:14px;line-height:1.8;color:#6b808b;font-weight:600;margin:0 0 8px}
.course-article .article-service-note p{font-size:13px;line-height:1.95;color:#75868e;margin-bottom:10px}
.course-article .article-closing{padding:43px 0 34px}
.course-article .article-closing p:not(.section-index){font-size:15px;color:#5d7683;max-width:580px}
.course-article .article-closing .site-button{margin-top:4px}
.course-article .article-next{padding:24px 0 38px;border-top:1px solid #e1e9ed;font-size:14px;line-height:1.9}
.course-article .article-next p{font-size:14px;margin-bottom:12px}
@media(max-width:1000px){.course-article .article-mentor-rail,.course-article .article-plans{width:100%;margin-inline:0}}
@media(max-width:760px){
 .course-article .reading-width{width:calc(100% - 44px)}
 .course-article .article-opening{padding:27px 0 29px}
 .course-article .article-kicker{font-size:15px;margin-bottom:20px}
 .course-article .article-kicker span{font-size:11px;margin-top:5px}
 .course-article h1{font-size:30px;line-height:1.48;margin-bottom:21px;letter-spacing:-.035em;text-wrap:initial}
 .course-article h1 em{display:block}
 .course-article h1>br{display:none}
 .course-article .article-lead{font-size:18px;line-height:1.9;margin-bottom:16px}
 .course-article .article-intro{font-size:15px;line-height:1.95}
 .course-article .opening-meta{margin-top:21px;gap:14px;font-size:12px}
 .course-article .opening-meta b{font-size:16px;margin-left:4px}
 .course-article .article-contents{margin-top:17px;gap:12px 21px;font-size:12px}
 .course-article .reading-section{padding:34px 0}
 .course-article .article-body h2{font-size:26px;line-height:1.5;margin-bottom:19px;letter-spacing:-.035em}
 .course-article .article-body p{font-size:16px;line-height:1.95;margin-bottom:17px}
 .course-article .project-example{padding:20px 19px 18px;margin:24px 0}
 .course-article .example-head{font-size:10px;gap:10px;margin-bottom:17px}
 .course-article .example-route{font-size:12px;gap:10px;margin-bottom:21px;padding-bottom:17px;flex-wrap:wrap}
 .course-article .project-example h3{font-size:21px;margin-bottom:22px}
 .course-article .project-story>div{display:block;margin-bottom:21px}
 .course-article .project-story dt{font-size:13px;margin-bottom:5px}
 .course-article .project-story dd{font-size:15px}
 .course-article .example-takeaway{font-size:16px!important;padding-left:13px;margin-top:22px!important}
 .course-article .project-example figcaption{font-size:11px}
 .course-article .mentor-hint{display:block;font-size:11px!important;color:#75909c;margin:22px 0 10px!important}
 .course-article .article-mentor-rail{display:flex;overflow-x:auto;scroll-snap-type:x proximity;overscroll-behavior-x:contain;gap:14px;margin:0 0 15px;padding-bottom:10px;scrollbar-width:thin;scrollbar-color:#a8c4d1 #edf4f7}
 .course-article .mentor{flex:0 0 86%;scroll-snap-align:start;padding:19px 21px}
 .course-article .mentor .expertise{min-height:0;margin-bottom:14px}
 .course-article .mentor .bio{font-size:14px}
 .course-article .article-plans{grid-template-columns:1fr;gap:18px;margin:24px 0 20px}
 .course-article .article-plan{padding:21px 21px 0}
 .course-article .plan-focus{font-size:16px!important}
 .course-article .plan-top strong{font-size:29px}
 .course-article .article-plan dd{font-size:15px}
 .course-article .plan-time{gap:7px}
 .course-article .reading-note{font-size:13px!important}
 .course-article .article-refund{padding:21px 19px}
 .course-article .article-refund h3{font-size:20px}
 .course-article .article-refund p{font-size:15px}
 .course-article .article-refund-path{font-size:11px!important}
 .course-article .article-refund-path span{margin-inline:3px}
 .course-article .article-service-note p{font-size:13px}
 .course-article .article-closing{padding:34px 0 30px}
 .course-article .article-next{padding-bottom:29px}
}
@media(max-width:350px){
 .course-article .reading-width{width:calc(100% - 36px)}
 .course-article h1{font-size:28px}
 .course-article .article-body h2{font-size:23px}
 .course-article .article-plan{padding-inline:17px}
 .course-article .plan-top strong{font-size:27px}
}


/* Course accents: one colour per course marks the title and section numbers only. */
.course-article{--accent:#147fa6;--accent-ink:#1d465c}
.course-idea{--accent:#2f8a6c}
.course-hands{--accent:#bb6f1d}
.course-paper{--accent:#3d6f96}
.course-intro,.course-quant{--accent:#2c8579}
.course-article h1 em,.course-article .article-kicker{color:var(--accent)}
.course-article h1 mark{color:inherit;background:linear-gradient(transparent 64%,#f7dca6 64%,#f7dca6 90%,transparent 90%);padding:0 .04em}
.course-article .section-index b{font-weight:700;color:var(--accent)}

/* Compact facts and terms, read as text rather than as cards. */
.course-article .article-facts{display:flex;flex-wrap:wrap;gap:12px 38px;margin:26px 0;padding:18px 0;border-block:1px solid #e0e9ed}
.course-article .article-facts div{display:flex;flex-direction:column;gap:2px}
.course-article .article-facts dt{order:2;font-size:12px;line-height:1.6;color:#6d8591}
.course-article .article-facts dd{order:1;margin:0;font-size:14px;color:#46677a}
.course-article .article-facts dd b{font-size:30px;line-height:1.25;font-weight:700;color:var(--accent-ink);margin-right:3px;font-variant-numeric:tabular-nums}
.course-article .article-terms{margin:22px 0 0}
.course-article .article-terms>div{padding:15px 0;border-top:1px solid #e3ebee}
.course-article .article-terms>div:last-child{border-bottom:1px solid #e3ebee}
.course-article .article-terms dt{font-size:14px;line-height:1.8;font-weight:650;color:#2f5d74;margin-bottom:4px}
.course-article .article-terms dd{margin:0;font-size:14.5px;line-height:1.9;color:#557080}
.course-article .article-price{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;margin:6px 0 4px}
.course-article .article-price strong{font-size:34px;line-height:1.3;color:var(--accent-ink);font-weight:700;font-variant-numeric:tabular-nums}
.course-article .article-price span{font-size:13px;color:#6f8793}

/* Paper: tiers table, payment split and the two choices after rejections. */
.course-article .tier-scroll{overflow-x:auto;margin:22px 0 12px;border-top:2px solid #9bb8cc;scrollbar-width:thin}
.course-article .tier-table{width:100%;min-width:560px;border-collapse:collapse;font-size:14px;line-height:1.7;color:#48677a}
.course-article .tier-table th,.course-article .tier-table td{text-align:left;padding:13px 12px;border-bottom:1px solid #e1e9ee;white-space:nowrap}
.course-article .tier-table thead th{font-size:12px;font-weight:600;color:#6c8594;background:#f6f9fb}
.course-article .tier-table tbody th{font-weight:650;color:#2b5a74;position:sticky;left:0;background:#fff}
.course-article .tier-table td:last-child{font-weight:650;color:#2b5a74;font-variant-numeric:tabular-nums}
.course-article .tier-hint{font-size:12px!important;color:#6f8793;margin:0 0 6px!important}
.course-article .pay-split{margin:28px 0}
.course-article .pay-bar{display:grid;grid-template-columns:4fr 1fr;height:44px;border-radius:6px;overflow:hidden;font-size:14px;font-weight:700;color:#fff}
.course-article .pay-bar span{display:flex;align-items:center;padding:0 14px}
.course-article .pay-bar span:first-child{background:linear-gradient(90deg,#3d6f96,#5a8db3)}
.course-article .pay-bar span:last-child{background:#d39a47;justify-content:center;padding:0}
.course-article .pay-legend{display:grid;grid-template-columns:4fr 1fr;gap:10px;margin-top:10px;font-size:13px;line-height:1.7;color:#5b7483}
.course-article .pay-legend p{font-size:13px!important;line-height:1.7!important;margin:0!important}
.course-article .pay-legend strong{display:block;font-size:14px;color:#2d5b75}
.course-article .pay-legend p:last-child strong{color:#99661f}
.course-article .article-choices{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:24px 0 18px}
.course-article .article-choices>div{border-top:2px solid #b6cddb;padding-top:14px}
.course-article .article-choices>div:last-child{border-top-color:#e2bc80}
.course-article .article-choices h3{font-size:16px;line-height:1.6;color:#2b5a74;margin:0 0 6px}
.course-article .article-choices p{font-size:14px!important;line-height:1.85!important;margin:0!important;color:#58717f}

/* Ability progression (teaching materials): the strongest visual on the research page. */
.course-article .ability-figure{margin:30px -40px 16px;padding:30px 34px 26px;border-radius:10px;background:linear-gradient(135deg,#156c94 0%,#1d5a80 100%);color:#fff}
.course-article .ability-figure ol{list-style:none;counter-reset:ability;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.course-article .ability-figure li{position:relative;counter-increment:ability;padding-top:46px;min-width:0}
.course-article .ability-figure li:before{content:counter(ability);position:absolute;z-index:1;top:0;left:0;display:grid;place-items:center;width:32px;height:32px;border-radius:50%;border:2px solid #9fcbe0;background:#1a6690;font-size:13px;font-weight:700;color:#fff}
.course-article .ability-figure li:not(:last-child):after{content:'';position:absolute;top:16px;left:36px;right:-18px;height:2px;background:linear-gradient(90deg,#8fc0d8,#6fa6c4)}
.course-article .ability-figure li:last-child:before{background:#f2b457;border-color:#f2b457;color:#4d3413}
.course-article .ability-figure strong{display:block;font-size:19px;line-height:1.5;color:#fff;margin-bottom:6px}
.course-article .ability-figure li:last-child strong{color:#ffd48c}
.course-article .ability-figure span{display:block;font-size:13.5px;line-height:1.8;color:#d7e9f3}
.course-article .ability-figure figcaption{margin-top:22px;padding-top:15px;border-top:1px solid #ffffff2e;font-size:13px;line-height:1.8;color:#cfe4ef}
.course-article .ability-note{font-size:14px!important;color:#5d7684}

/* Motion figures: complete static diagrams first; playback only replays their order. */
.course-article .motion-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap}
.course-article .motion-figure{margin:28px 0;padding:20px 0 18px;border-block:1px solid #dbe9ee}
.course-article .motion-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;min-height:32px}
.course-article .article-body .motion-title{font-size:13px;line-height:1.7;font-weight:650;color:#4d7488;letter-spacing:.03em;margin:0}
.course-article .motion-replay{font:inherit;font-size:12px;line-height:1.5;color:#176f98;background:#fff;border:1px solid #c6dde7;border-radius:999px;padding:5px 13px;min-height:32px;cursor:pointer;flex:none}
.course-article .motion-replay:hover{background:#f0f7fb;border-color:#9cc3d5}
.course-article .motion-replay:focus-visible{outline:2px solid #176f98;outline-offset:2px}
.course-article .motion-replay[hidden]{display:none}
.course-article .motion-figure figcaption{display:flex;align-items:flex-start;gap:7px;margin-top:14px;font-size:12px;line-height:1.8;color:#758895}
.course-article .motion-loop{display:inline-block;font-size:16px;line-height:1.2;color:#a2651c}

/* Lane diagram: who does each step. Lane a = mentor / assistant, lane b = learner.
   Each step says where its connector goes: to-down (a→b), to-up (b→a) or to-flat (same lane). */
.course-article .lane-flow{width:calc(100% + 80px);margin-inline:-40px}
.course-article .lane-body{position:relative;padding-left:78px}
.course-article .lane-labels{position:absolute;inset:0;display:grid;grid-template-rows:1fr 1fr;gap:14px}
.course-article .lane-labels span{display:flex;flex-direction:column;justify-content:center;padding-left:14px;border-radius:6px;font-size:15px;line-height:1.5;font-weight:700}
.course-article .lane-labels small{font-size:10px;line-height:1.5;font-weight:500;margin-top:2px}
.course-article .lane-labels .a{background:#edf5fa;color:#176f98}
.course-article .lane-labels .b{background:#fff5e7;color:#a2651c}
.course-article .lane-labels .b small{color:#9b7c56}
.course-article .lane-steps{--n:4;position:relative;list-style:none;margin:0;padding:10px 12px;display:grid;grid-template-columns:repeat(var(--n),minmax(0,1fr));grid-template-rows:1fr 1fr;column-gap:26px;row-gap:34px}
.course-article .lane-step{position:relative;display:flex;flex-direction:column;gap:3px;min-width:0;background:#fff;border:1px solid #bcd8e6;border-radius:6px;padding:11px 13px 12px;color:#1b5f7c}
.course-article .lane-step.a{grid-row:1}
.course-article .lane-step.b{grid-row:2;border-color:#ecd1a9;color:#94591a}
.course-article .lane-step:nth-child(1){grid-column:1}
.course-article .lane-step:nth-child(2){grid-column:2}
.course-article .lane-step:nth-child(3){grid-column:3}
.course-article .lane-step:nth-child(4){grid-column:4}
.course-article .lane-step:nth-child(5){grid-column:5}
.course-article .lane-no{font-size:11px;line-height:1.5;font-weight:700;opacity:.75}
.course-article .lane-step strong{font-size:16px;line-height:1.55;font-weight:700;color:inherit}
.course-article .lane-text{font-size:12.5px;line-height:1.75;color:#587280}
.course-article .lane-tag{font-weight:600;color:#2c7a62;background:#e6f4ee;border-radius:3px;padding:0 4px;-webkit-box-decoration-break:clone;box-decoration-break:clone}
.course-article .lane-step[class*=to-]:after{content:'';position:absolute;left:100%;width:26px;color:#9fc0cf;pointer-events:none}
.course-article .lane-step.to-down:after{top:50%;height:calc(100% + 34px);background:linear-gradient(currentColor,currentColor) 0 0/50% 1.5px no-repeat,linear-gradient(currentColor,currentColor) 50% 0/1.5px 100% no-repeat,linear-gradient(currentColor,currentColor) 100% 100%/50% 1.5px no-repeat}
.course-article .lane-step.to-up:after{bottom:50%;height:calc(100% + 34px);background:linear-gradient(currentColor,currentColor) 0 100%/50% 1.5px no-repeat,linear-gradient(currentColor,currentColor) 50% 0/1.5px 100% no-repeat,linear-gradient(currentColor,currentColor) 100% 0/50% 1.5px no-repeat}
.course-article .lane-step.to-flat:after{top:50%;height:1.5px;background:currentColor}
.course-article .lane-step:not(:first-child):before{content:'';position:absolute;right:100%;top:50%;margin-top:-4px;border:4px solid transparent;border-left:6px solid #9fc0cf;border-right:0}
.course-article .lane-flow figcaption{padding-left:78px}

/* Step timeline: ordered steps on one line, optional phase labels above groups. */
.course-article .step-flow{--ph:28px}
.course-article .step-flow.plain{--ph:0px}
.course-article .step-list{--n:5;list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(var(--n),minmax(0,1fr));gap:16px}
.course-article .step-list li{position:relative;min-width:0;padding-top:calc(var(--ph) + 38px)}
.course-article .step-phase{position:absolute;top:0;left:0;display:block;height:22px;line-height:22px;font-size:11px;letter-spacing:.04em;color:#6f8c9a;white-space:nowrap}
.course-article .step-dot{position:absolute;z-index:1;top:var(--ph);left:0;display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:#176f98;border:2px solid #176f98;color:#fff;font-size:12px;font-weight:700;line-height:1;box-sizing:border-box}
.course-article .step-list li:last-child .step-dot{background:#c3862f;border-color:#c3862f}
.course-article .step-list li:not(:last-child):before,.course-article .step-list li:not(:last-child):after{content:'';position:absolute;top:calc(var(--ph) + 13px);left:14px;width:calc(100% + 16px);height:2px;background:#dde8ec}
.course-article .step-list li:not(:last-child):after{background:linear-gradient(90deg,#4b9cc0,#86b9cf);transform-origin:left center}
.course-article .step-list li:nth-last-child(2):after{background:linear-gradient(90deg,#86b9cf,#d7a35b)}
.course-article .step-list h3{font-size:15px;line-height:1.6;color:#2b5a70;margin:0 0 5px}
.course-article .article-body .step-list p{font-size:13px;line-height:1.8;margin:0;color:#5b7482}

@media(max-width:1000px){.course-article .lane-flow,.course-article .ability-figure{width:auto;margin-inline:0}}
@media(max-width:760px){
 .course-article .article-facts{gap:12px 26px}
 .course-article .article-facts dd b{font-size:26px}
 .course-article .article-choices{grid-template-columns:1fr}
 .course-article .pay-legend{grid-template-columns:1fr;gap:6px}
 .course-article .ability-figure{padding:24px 20px 20px;margin-top:24px}
 .course-article .ability-figure ol{grid-template-columns:1fr;gap:0}
 .course-article .ability-figure li{padding:0 0 20px 48px}
 .course-article .ability-figure li:last-child{padding-bottom:0}
 .course-article .ability-figure li:not(:last-child):after{top:34px;bottom:0;left:15px;right:auto;width:2px;height:auto;background:#8fc0d8}
 .course-article .ability-figure strong{font-size:18px;margin-bottom:3px}
 .course-article .ability-figure span{font-size:14px}
 .course-article .motion-figure{margin:24px 0;padding:17px 0 15px}
 .course-article .motion-head{margin-bottom:13px}
 .course-article .lane-body{padding-left:0}
 .course-article .lane-labels{position:static;grid-template-rows:none;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:8px}
 .course-article .lane-labels span{flex-direction:row;align-items:baseline;gap:6px;padding:5px 10px;font-size:14px;background:none}
 .course-article .lane-steps{grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:none;column-gap:14px;row-gap:22px;padding:10px;border-radius:6px;background:linear-gradient(90deg,#edf5fa 0,#edf5fa calc(50% - 7px),transparent calc(50% - 7px),transparent calc(50% + 7px),#fff5e7 calc(50% + 7px))}
 .course-article .lane-steps .lane-step.a{grid-column:1}
 .course-article .lane-steps .lane-step.b{grid-column:2}
 .course-article .lane-step:nth-child(1){grid-row:1}
 .course-article .lane-step:nth-child(2){grid-row:2}
 .course-article .lane-step:nth-child(3){grid-row:3}
 .course-article .lane-step:nth-child(4){grid-row:4}
 .course-article .lane-step:nth-child(5){grid-row:5}
 .course-article .lane-step{padding:10px 11px 11px}
 .course-article .lane-step strong{font-size:15px}
 /* Mobile zigzag: across to the other lane's centre then down; same lane goes straight down. */
 .course-article .lane-step.to-down:after,.course-article .lane-step.to-up:after{top:50%;bottom:auto;width:calc(50% + 14px);height:calc(50% + 22px)}
 .course-article .lane-step.to-down:after{left:100%;right:auto;background:linear-gradient(currentColor,currentColor) 0 0/100% 1.5px no-repeat,linear-gradient(currentColor,currentColor) 100% 0/1.5px 100% no-repeat}
 .course-article .lane-step.to-up:after{left:auto;right:100%;background:linear-gradient(currentColor,currentColor) 0 0/100% 1.5px no-repeat,linear-gradient(currentColor,currentColor) 0 0/1.5px 100% no-repeat}
 .course-article .lane-step.to-flat:after{top:100%;left:50%;width:1.5px;height:22px}
 .course-article .lane-step:not(:first-child):before{right:auto;top:auto;bottom:100%;left:50%;margin:0 0 0 -4px;border:4px solid transparent;border-top:6px solid #9fc0cf;border-bottom:0}
 .course-article .lane-flow figcaption{padding-left:0}
 .course-article .step-list{grid-template-columns:1fr;gap:0}
 .course-article .step-list li{padding:0 0 18px 44px}
 .course-article .step-list li:last-child{padding-bottom:0}
 .course-article .step-phase{position:static;margin-bottom:4px}
 .course-article .step-dot{top:0}
 .course-article .step-list li.has-phase .step-dot{top:26px}
 .course-article .step-list li:not(:last-child):before,.course-article .step-list li:not(:last-child):after{left:13px;width:2px;height:auto;top:14px;bottom:-14px}
 .course-article .step-list li.has-phase:not(:last-child):before,.course-article .step-list li.has-phase:not(:last-child):after{top:40px}
 .course-article .step-list li:has(+ li.has-phase):before,.course-article .step-list li:has(+ li.has-phase):after{bottom:-40px}
 .course-article .step-list li:not(:last-child):after{background:linear-gradient(180deg,#4b9cc0,#86b9cf);transform-origin:center top}
 .course-article .step-list li:nth-last-child(2):after{background:linear-gradient(180deg,#86b9cf,#d7a35b)}
 .course-article .step-list h3{font-size:16px}
 .course-article .article-body .step-list p{font-size:14px}
}
@media(max-width:350px){
 .course-article .lane-steps{column-gap:10px;padding:8px;background:linear-gradient(90deg,#edf5fa 0,#edf5fa calc(50% - 5px),transparent calc(50% - 5px),transparent calc(50% + 5px),#fff5e7 calc(50% + 5px))}
 .course-article .lane-step{padding:9px 9px 10px}
 .course-article .lane-step strong{font-size:14px}
 .course-article .lane-step.to-down:after,.course-article .lane-step.to-up:after{width:calc(50% + 10px)}
 .course-article .lane-labels{gap:10px}
 .course-article .article-facts dd b{font-size:24px}
}

/* Playback exists only when motion is welcome; print and reduced motion keep the static figure. */
@media screen and (prefers-reduced-motion:no-preference){
 .course-article .motion-ready:not(.is-playing) .lane-step{opacity:.32;transform:translateY(6px)}
 .course-article .motion-ready:not(.is-playing) .lane-step:after{clip-path:inset(0 100% 0 0)}
 .course-article .motion-ready:not(.is-playing) .motion-loop{opacity:.3}
 .course-article .motion-ready:not(.is-playing) .step-list li>*:not(.step-dot){opacity:.32}
 .course-article .motion-ready:not(.is-playing) .step-dot{background:#fff;border-color:#cfdde3;color:#8aa3ae}
 .course-article .motion-ready:not(.is-playing) .step-list li:after{transform:scale(0,1)}
 .course-article .is-playing .lane-step{animation:mo-step .9s cubic-bezier(.2,.7,.3,1) backwards;animation-delay:calc(var(--i)*.75s)}
 .course-article .is-playing .lane-step:after{animation:mo-draw-r .38s ease-out backwards;animation-delay:calc(var(--i)*.75s + .5s)}
 .course-article .is-playing .motion-loop{animation:mo-loop .8s ease-in-out backwards;animation-delay:calc(var(--steps,4)*.75s)}
 .course-article .is-playing .step-list li>*:not(.step-dot){animation:mo-fade .5s ease-out backwards;animation-delay:calc(var(--i)*.6s)}
 .course-article .is-playing .step-dot{animation:mo-dot .55s ease-out backwards;animation-delay:calc(var(--i)*.6s)}
 .course-article .is-playing .step-list li:after{animation:mo-fill-x .35s ease-in-out backwards;animation-delay:calc(var(--i)*.6s + .3s)}
 .course-article .lane-step:nth-child(1),.course-article .step-list li:nth-child(1){--i:0}
 .course-article .lane-step:nth-child(2),.course-article .step-list li:nth-child(2){--i:1}
 .course-article .lane-step:nth-child(3),.course-article .step-list li:nth-child(3){--i:2}
 .course-article .lane-step:nth-child(4),.course-article .step-list li:nth-child(4){--i:3}
 .course-article .lane-step:nth-child(5),.course-article .step-list li:nth-child(5){--i:4}
 .course-article .step-list li:nth-child(6){--i:5}
}
@media screen and (prefers-reduced-motion:no-preference) and (max-width:760px){
 .course-article .motion-ready:not(.is-playing) .lane-step.to-up:after{clip-path:inset(0 0 0 100%)}
 .course-article .motion-ready:not(.is-playing) .lane-step.to-flat:after{clip-path:inset(0 0 100% 0)}
 .course-article .is-playing .lane-step.to-up:after{animation-name:mo-draw-l}
 .course-article .is-playing .lane-step.to-flat:after{animation-name:mo-draw-d}
 .course-article .motion-ready:not(.is-playing) .step-list li:after{transform:scale(1,0)}
 .course-article .is-playing .step-list li:after{animation-name:mo-fill-y}
}
@keyframes mo-step{0%{opacity:.32;transform:translateY(6px);box-shadow:0 0 0 0 rgba(23,111,152,0)}45%{opacity:1;transform:none;box-shadow:0 0 0 5px rgba(23,111,152,.13)}100%{box-shadow:0 0 0 0 rgba(23,111,152,0)}}
@keyframes mo-draw-r{from{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0)}}
@keyframes mo-draw-l{from{clip-path:inset(0 0 0 100%)}to{clip-path:inset(0)}}
@keyframes mo-draw-d{from{clip-path:inset(0 0 100% 0)}to{clip-path:inset(0)}}
@keyframes mo-loop{from{opacity:.3;transform:rotate(-200deg)}to{opacity:1;transform:none}}
@keyframes mo-fade{from{opacity:.32}}
@keyframes mo-dot{0%{background:#fff;border-color:#cfdde3;color:#8aa3ae;transform:scale(.86)}60%{transform:scale(1.14)}100%{transform:none}}
@keyframes mo-fill-x{from{transform:scale(0,1)}}
@keyframes mo-fill-y{from{transform:scale(1,0)}}
@media print{.course-article .motion-replay{display:none}}

/* Approved P1 emphasis: value explained strongly, service conditions calm and findable. */
.course-article .plan-gain{font-size:15px!important;color:#23506a!important;font-weight:500;padding-left:11px;border-left:2px solid #6cacc9}
.course-article .plan-b .plan-gain{border-left-color:#74b49d}
.course-article .article-refund{background:#fbf8f1;border-left:2px solid #e6cb97;padding:20px 23px}
.course-article .article-refund h3{font-size:17px;line-height:1.6;font-weight:650;margin:0 0 10px;color:#7c5c2c}
.course-article .article-refund p{font-size:14.5px;color:#6b6250}

/* Document specimen: readable structure without an imitation screenshot. */
.course-article .doc-figure{padding:26px 30px;background:#f5faf7;border-left:3px solid #72aa91}
.course-article .article-body .doc-head{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12px;color:#567e6b;margin:0 0 20px}
.course-article .doc-figure h3{font-size:24px;color:#286d52;margin:0 0 18px}
.course-article .doc-figure ol{list-style:none;padding:0;margin:0}
.course-article .doc-figure li{display:grid;grid-template-columns:100px 1fr;gap:18px;padding:12px 0;border-top:1px solid #d9e8df;font-size:14px;line-height:1.8}
.course-article .doc-figure strong{color:#376b55}
.course-article .article-subhead{font-size:22px;line-height:1.6;color:#234d63;margin:32px 0 14px}
.course-article .step-phase{white-space:normal;height:auto;line-height:1.6;max-width:100%}
.course-paper .step-flow:not(.plain){--ph:44px}
.course-article .anchor-alias{display:block;scroll-margin-top:125px}
.course-article .opening-meta b{overflow-wrap:anywhere}
@media(max-width:760px){
 .course-article .doc-figure{padding:23px 20px}
 .course-article .doc-figure li{grid-template-columns:1fr;gap:3px}
 .course-article .step-phase{position:static}
 .course-paper .step-list li.has-phase .step-dot{top:0}
 .course-paper .step-list li.has-phase:not(:last-child):before,.course-paper .step-list li.has-phase:not(:last-child):after{top:14px}
 .course-paper .step-list li:has(+ li.has-phase):before,.course-paper .step-list li:has(+ li.has-phase):after{bottom:-14px}
}
.article-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px 24px}
.site-card-actions .site-link[data-purchase]{font-weight:600;color:#c0620f}
.article-actions .site-link[data-purchase]{font-weight:600;color:#c0620f}