/* Course pages only: public teaching copy and private, server-confirmed delivery. */
.course-site{--course-tint:var(--brand-soft,#eaf0ff);--course-warm:#fff4e7;--course-space:clamp(24px,3vw,52px)}
.course-wrap{width:min(100% - 48px,1560px);margin-inline:auto;padding-bottom:64px}.course-skip{position:fixed;left:16px;top:8px;z-index:1000;padding:12px 18px;background:var(--card);color:var(--ink);border:2px solid var(--brand);border-radius:8px;transform:translateY(-150%)}.course-skip:focus{transform:none}
.course-subnav{display:flex;flex-wrap:wrap;gap:8px 24px;padding:22px 0;border-bottom:1px solid var(--line)}.course-subnav a{display:inline-flex;align-items:center;min-height:40px;font-size:.94rem;color:var(--muted)}.course-subnav a:hover{color:var(--brand)}.course-hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(340px,.8fr);gap:var(--course-space);align-items:center;padding:clamp(40px,5vw,80px) 0}.course-kicker{font-size:.8rem;font-weight:700;letter-spacing:.08em;color:var(--brand);margin:0 0 14px}.course-site h1{font-size:clamp(32px,3.2vw,56px);line-height:1.2;letter-spacing:-.035em;margin:0 0 24px;max-width:23ch}.course-site h1 span{color:var(--brand)}.course-site h2{font-size:clamp(24px,2vw,34px);line-height:1.35;letter-spacing:-.025em;margin:0 0 20px}.course-site h3{font-size:1.2rem;line-height:1.4;margin:0 0 12px}.course-site p{margin-top:0}.course-lead{font-size:clamp(17px,1.25vw,21px);line-height:1.75;color:var(--ink-2);max-width:54ch}.course-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 0}.course-button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;border:1px solid transparent;border-radius:10px;padding:11px 18px;font:inherit;font-weight:650;line-height:1.4;text-align:center;text-decoration:none;cursor:pointer}.course-button-primary{background:var(--brand);color:#fff}.course-button-primary:hover{background:var(--brand-2);color:#fff}.course-button-secondary{background:var(--card);border-color:var(--line-2);color:var(--ink)}.course-button-secondary:hover{border-color:var(--brand);color:var(--brand)}.course-button:disabled{cursor:default;background:var(--line);color:var(--muted);border-color:var(--line);opacity:1}.course-button:focus-visible,.course-site a:focus-visible,.course-link-button:focus-visible{outline:3px solid var(--brand);outline-offset:4px}
.course-roadmap{padding:clamp(24px,3vw,40px);border:1px solid var(--line);border-radius:24px;background:var(--card);box-shadow:var(--shadow)}.course-roadmap ol{padding:0;margin:20px 0;list-style:none;display:grid;gap:24px}.course-roadmap li{display:grid;grid-template-columns:42px 1fr;gap:16px;align-items:start}.course-roadmap h2{font-size:1.13rem;margin:0 0 5px;letter-spacing:0}.course-roadmap li p{color:var(--muted);font-size:.94rem;margin:0}.course-step{width:42px;height:42px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;font-size:.85rem;color:var(--brand);font-weight:700}.course-fineprint{font-size:.88rem;color:var(--muted);line-height:1.7}.course-section{padding:clamp(32px,4vw,56px) 0}.course-section-heading{margin-bottom:28px}.course-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}.course-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden}.course-card-art{height:170px;padding:28px 32px;position:relative;overflow:hidden;color:#153f8b;background:#edf3ff}.course-card-art>span{font-size:.75rem;font-weight:700;letter-spacing:.13em}.course-card-art-alibaba{background:#fff0dd;color:#8d3d0e}.course-site-sketch{position:absolute;top:63px;left:32px;width:65%;height:90px;display:grid;grid-template-columns:2fr 1fr;gap:10px;border:1px solid #8aa8de;padding:13px;border-radius:10px;background:#f8fbff;transform:rotate(-3deg)}.course-site-sketch i{background:#d4e2fa;border-radius:4px}.course-site-sketch i:first-child{grid-column:1/-1;height:15px}.course-bars{position:absolute;bottom:20px;right:50px;display:flex;align-items:end;gap:16px;height:80px;width:60%}.course-bars i{flex:1;height:40%;background:#d88844;border-radius:7px 7px 0 0}.course-bars i:nth-child(2){height:68%}.course-bars i:nth-child(3){height:52%}.course-bars i:nth-child(4){height:92%}.course-card-body{padding:clamp(24px,3vw,36px);display:flex;flex-direction:column;flex:1}.course-card h3{font-size:1.65rem;margin-bottom:16px}.course-card h3 a{color:var(--ink)}.course-card ul{padding-left:20px;color:var(--ink-2);margin:0 0 28px}.course-card li+li{margin-top:8px}.course-card-bottom{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.course-price{font-size:2.2rem;line-height:1.2;letter-spacing:-.04em;font-weight:750;margin:0}.course-price small{font-size:.9rem;font-weight:500;letter-spacing:0;color:var(--muted)}.course-boundaries{display:grid;grid-template-columns:1fr 1fr;gap:var(--course-space);border-top:1px solid var(--line)}.course-boundaries p{max-width:65ch;color:var(--ink-2)}.course-support{font-size:.9rem;color:var(--muted);margin:22px 0 0}.course-support a{font-weight:650}.course-detail-layout{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(340px,.8fr);gap:var(--course-space);align-items:start;padding-top:52px}.course-detail-copy{min-width:0}.course-detail-copy>p{max-width:65ch}.course-preview{margin:28px 0 12px;display:flex;gap:18px;align-items:center;padding:24px;border:1px solid var(--line);border-radius:14px;background:var(--card);color:var(--ink)}.course-preview:hover{border-color:var(--brand)}.course-preview strong,.course-preview small{display:block}.course-preview small{margin-top:4px;color:var(--muted)}.course-preview>span:last-child{margin-left:auto}.course-play-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:50%;background:var(--course-tint);color:var(--brand);flex-shrink:0}.course-topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.course-topic-grid article{padding:24px;background:var(--card);border:1px solid var(--line);border-radius:14px}.course-topic-grid article>span{display:block;font-size:.8rem;font-weight:700;color:var(--brand);margin-bottom:12px}.course-topic-grid p{color:var(--muted);font-size:.94rem;margin:0}.course-topic-grid+.course-fineprint{margin-top:18px}.course-purchase{position:sticky;top:100px;border:1px solid var(--line-2);padding:clamp(24px,2.4vw,36px);border-radius:20px;background:var(--card);scroll-margin-top:100px}.course-purchase h2{font-size:1.35rem}.course-purchase>.course-price{font-size:2.7rem;margin:24px 0 12px}.course-purchase>p:not(.course-kicker):not(.course-price){font-size:.93rem;color:var(--muted)}.course-delivery{padding-left:21px;color:var(--ink-2);font-size:.93rem;margin:24px 0}.course-delivery li+li{margin-top:12px}.course-purchase-terms{border-top:1px solid var(--line);padding-top:20px;margin-bottom:20px}.course-purchase-terms label{display:flex;gap:12px;font-size:.86rem;line-height:1.75;align-items:flex-start;color:var(--ink-2)}.course-purchase-terms input{width:20px;height:20px;flex-shrink:0;margin-top:4px;accent-color:var(--brand)}.course-purchase>.course-button{width:100%}.course-purchase>.course-button-secondary{margin-top:14px}.course-status{min-height:28px;font-size:.95rem;color:var(--muted);overflow-wrap:anywhere;margin:14px 0}.course-status[data-error="true"]{color:var(--bad)}.course-link-button{font:inherit;color:var(--brand);background:none;border:0;cursor:pointer;padding:8px 0;min-height:44px}.course-practice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.course-practice-grid a{display:flex;flex-direction:column;gap:10px;padding:26px;border:1px solid var(--line);border-radius:14px;background:var(--card);color:var(--ink)}.course-practice-grid span{color:var(--muted);font-size:.94rem}.course-account{padding-top:0;min-height:65vh}.course-account-heading{padding:48px 0 12px;max-width:75ch}.course-account-heading h1{font-size:clamp(32px,3vw,44px)}.course-empty{padding:40px;border:1px dashed var(--line-2);border-radius:16px;background:var(--card);margin-top:24px}.course-owned-card{padding:32px;border:1px solid var(--line);border-radius:18px;background:var(--card)}.course-owned-card h2{font-size:1.5rem}.course-order-card{max-width:880px;margin:48px auto 0;padding:clamp(24px,4vw,48px);background:var(--card);border:1px solid var(--line);border-radius:20px}.course-order-card h1{font-size:clamp(28px,2.7vw,40px)}.course-order-details{display:grid;gap:16px;margin:28px 0;border-block:1px solid var(--line);padding:24px 0}.course-order-details>div{display:grid;grid-template-columns:100px minmax(0,1fr);gap:16px}.course-order-details dt{color:var(--muted)}.course-order-details dd{margin:0;font-weight:600}.course-site [hidden]{display:none!important}
@media(min-width:1800px){.course-hero{min-height:560px}.course-topic-grid{gap:22px}.course-purchase{top:116px}}
@media(max-width:1050px){.course-hero{grid-template-columns:minmax(0,1fr) minmax(300px,.85fr)}.course-detail-layout{grid-template-columns:minmax(0,1fr) minmax(310px,.8fr);gap:28px}.course-purchase{padding:24px}.course-card-bottom .course-button{width:100%}}
@media(max-width:760px){.course-wrap{width:calc(100% - 32px);padding-bottom:36px}.course-subnav{gap:0 18px;padding:12px 0}.course-subnav a{font-size:.86rem}.course-hero,.course-detail-layout{grid-template-columns:1fr;gap:28px;padding-top:32px}.course-roadmap{padding:24px}.course-grid,.course-boundaries{grid-template-columns:1fr;gap:22px}.course-hero h1{max-width:none}.course-card-art{height:145px}.course-card h3{font-size:1.4rem}.course-card-body{padding:24px}.course-card-bottom{align-items:flex-start}.course-purchase{position:static;grid-row:2}.course-topic-grid{grid-template-columns:1fr 1fr;gap:12px}.course-topic-grid article{padding:18px}.course-topic-grid h3{font-size:1.05rem}.course-practice-grid{grid-template-columns:1fr}.course-section{padding:32px 0}.course-order-card{margin-top:28px}.course-actions .course-button{flex:1 1 200px}.course-empty{padding:24px}}
@media(max-width:420px){.course-topic-grid{grid-template-columns:1fr}.course-preview{padding:18px;gap:12px}.course-preview strong{font-size:.95rem}.course-order-details>div{grid-template-columns:78px minmax(0,1fr);gap:12px}}
@media(prefers-reduced-motion:reduce){.course-site *{scroll-behavior:auto}}

.course-detail-jump{display:inline-flex;align-items:center;gap:12px;min-height:44px;font-weight:650;padding-block:8px;color:var(--brand)}

.course-mentor{display:flex;align-items:center;gap:18px;padding:20px 24px;border:1px solid var(--line);background:var(--card);border-radius:14px;max-width:560px;margin:20px 0}.course-mentor img{display:block;width:64px;height:64px;object-fit:cover;object-position:center 20%;border-radius:50%;flex-shrink:0}.course-mentor .course-kicker{font-size:.74rem;margin:0 0 3px}.course-mentor strong{display:block;font-size:1rem}.course-mentor a{display:inline-flex;align-items:center;gap:8px;min-height:32px;font-size:.88rem}

.course-order-history{margin-top:40px;padding-top:32px;border-top:1px solid var(--line)}.course-order-history .course-section-heading{margin-bottom:12px}.course-order-list{list-style:none;padding:0;margin:20px 0;display:grid;gap:14px}.course-order-record{display:grid;grid-template-columns:minmax(0,1fr) minmax(120px,.45fr) auto;align-items:center;gap:20px;padding:20px 24px;border:1px solid var(--line);border-radius:14px;background:var(--card)}.course-order-record-copy{display:grid;gap:4px;min-width:0}.course-order-record-copy span,.course-order-record-state{font-size:.9rem;color:var(--muted)}.course-order-record .course-button{min-height:44px}@media(max-width:760px){.course-order-record{grid-template-columns:minmax(0,1fr) auto;padding:20px;gap:16px}.course-order-record-copy{grid-column:1/-1}.course-order-record .course-button{padding:10px 14px}}