.article-page{--yellow:var(--rpo-yellow);--gray:#777;--white:#111;background:#fff;color:var(--rpo-ink)}
.reading-progress{position:fixed;left:0;top:0;width:0;height:3px;background:var(--rpo-yellow);z-index:1200;transition:width .08s linear}
.article-hero{position:relative;overflow:hidden;background:#111;color:#fff;padding:clamp(135px,14vw,210px) 0 clamp(70px,8vw,115px)}
.article-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 77% 24%,rgba(255,207,0,.11),transparent 30%),linear-gradient(125deg,#0b0b0b 0%,#171717 60%,#0c0c0c 100%)}
.article-hero::after{content:"";position:absolute;inset:0;opacity:.14;background-image:linear-gradient(rgba(255,255,255,.13) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.13) 1px,transparent 1px);background-size:72px 72px;mask-image:linear-gradient(90deg,transparent 25%,#000 100%)}
.article-hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.12fr) minmax(300px,.55fr);gap:clamp(50px,8vw,120px);align-items:end}
.article-back{display:inline-flex;margin-bottom:42px;font-family:var(--rpo-mono);font-size:9px;letter-spacing:.17em;text-transform:uppercase;color:rgba(255,255,255,.55);transition:.2s}.article-back:hover{color:var(--rpo-yellow)}
.article-category{display:flex;align-items:center;gap:10px;margin-bottom:23px;font-family:var(--rpo-mono);font-size:9px;letter-spacing:.19em;text-transform:uppercase;color:rgba(255,255,255,.72)}.article-category span{width:8px;height:8px;border-radius:50%;background:var(--rpo-yellow)}
.article-hero h1{margin:0;max-width:1020px;font-family:var(--rpo-head);font-size:clamp(62px,8vw,126px);font-weight:900;line-height:.87;letter-spacing:-.035em;text-transform:uppercase}.article-hero h1 em,.article-hero h1 span{font-style:normal;color:var(--rpo-yellow)}
.article-lead{max-width:790px;margin-top:34px;color:rgba(255,255,255,.66);font-size:clamp(18px,1.55vw,22px);line-height:1.56}.article-lead strong{color:#fff}
.article-meta-new{display:flex;flex-wrap:wrap;gap:0;margin-top:40px;border-top:1px solid rgba(255,255,255,.16);border-bottom:1px solid rgba(255,255,255,.16)}.article-meta-new span{padding:13px 24px 13px 0;margin-right:24px;border-right:1px solid rgba(255,255,255,.16);font-family:var(--rpo-mono);font-size:8px;letter-spacing:.15em;text-transform:uppercase;color:rgba(255,255,255,.55)}.article-meta-new span:last-child{border-right:0}
.article-hero-art{position:relative;min-height:480px;border:1px solid rgba(255,255,255,.18);overflow:hidden;display:flex;align-items:flex-end;justify-content:center;background:var(--rpo-yellow);color:#111}.hero-art-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(17,17,17,.18) 1px,transparent 1px),linear-gradient(90deg,rgba(17,17,17,.18) 1px,transparent 1px);background-size:42px 42px}.article-hero-art::before{content:"";position:absolute;width:56%;aspect-ratio:1;border:1px solid rgba(17,17,17,.45);border-radius:50%;left:50%;top:46%;transform:translate(-50%,-50%)}.article-hero-art::after{content:"";position:absolute;width:78%;height:1px;background:#111;left:11%;top:46%;transform:rotate(-28deg)}.article-hero-art b{position:relative;z-index:2;font-family:var(--rpo-head);font-size:clamp(150px,18vw,280px);font-weight:900;line-height:.65;letter-spacing:-.065em}.article-hero-art small{position:absolute;z-index:3;right:18px;top:18px;font-family:var(--rpo-mono);font-size:8px;letter-spacing:.16em;writing-mode:vertical-rl}
.article-theme-trail .article-hero-art{background:#d5ff36}.article-theme-recovery .article-hero-art{background:#d7d8ff}.article-theme-fuel .article-hero-art{background:#ffb56b}.article-theme-strategy .article-hero-art{background:#ffcf00}.article-theme-strength .article-hero-art{background:#ff876f}.article-theme-technique .article-hero-art{background:#a7e8ff}.article-theme-beginner .article-hero-art{background:#fff}.article-theme-endurance .article-hero-art{background:#aee1b0}.article-theme-race .article-hero-art{background:#f3efdf}
.article-reading{padding:clamp(75px,9vw,140px) 0;background:#fff}.article-layout{display:grid;grid-template-columns:250px minmax(0,780px);gap:clamp(55px,9vw,130px);justify-content:center;align-items:start}.sidebar-sticky{position:sticky;top:120px}.sidebar-label{margin-bottom:18px;font-family:var(--rpo-mono);font-size:9px;letter-spacing:.16em;text-transform:uppercase;color:#888}.article-toc{border-top:1px solid var(--rpo-line)}.article-toc a{display:grid;grid-template-columns:28px 1fr;gap:8px;padding:12px 0;border-bottom:1px solid var(--rpo-line);font-family:var(--rpo-mono);font-size:8px;line-height:1.45;letter-spacing:.08em;text-transform:uppercase;color:#777;transition:.2s}.article-toc a span{color:#bbb}.article-toc a:hover,.article-toc a.is-active{color:#111}.article-toc a.is-active{border-bottom-color:#111}.article-toc a.is-active span{color:var(--rpo-yellow-dark)}
.sidebar-share{display:grid;gap:7px;margin-top:26px}.sidebar-share button{height:38px;border:1px solid var(--rpo-line);background:#fff;text-align:left;padding:0 12px;font-family:var(--rpo-mono);font-size:8px;letter-spacing:.12em;text-transform:uppercase;cursor:pointer;transition:.2s}.sidebar-share button:hover{background:#111;color:#fff;border-color:#111}
.article-content{min-width:0;font-size:18px;line-height:1.78;color:#292929}.article-content>p{margin:0 0 25px}.article-content a:not(.btn-cta){text-decoration:underline;text-decoration-color:rgba(17,17,17,.25);text-underline-offset:4px}.article-content a:hover{text-decoration-color:var(--rpo-yellow-dark)}.article-content strong{font-weight:700;color:#111}.article-content em{color:#555}
.article-content h2{scroll-margin-top:120px;margin:82px 0 24px;padding-top:25px;border-top:1px solid var(--rpo-line);font-family:var(--rpo-head);font-size:clamp(42px,5vw,66px);font-weight:900;line-height:.95;letter-spacing:-.02em;text-transform:uppercase;color:#111}.article-content h2:first-child{margin-top:0}.article-content h2 em,.article-content h2 span{font-style:normal;background:var(--rpo-yellow);padding:0 .09em}.article-content h3{margin:48px 0 16px;font-family:var(--rpo-head);font-size:clamp(27px,3vw,37px);font-weight:800;line-height:1;text-transform:uppercase;color:#111}
.article-content ul,.article-content ol{margin:25px 0 32px;padding-left:0;list-style:none;counter-reset:item}.article-content li{position:relative;padding:11px 0 11px 34px;border-bottom:1px solid var(--rpo-line)}.article-content li::before{content:"→";position:absolute;left:0;color:var(--rpo-yellow-dark);font-family:var(--rpo-mono);font-weight:600}.article-content ol li{counter-increment:item}.article-content ol li::before{content:counter(item,decimal-leading-zero);font-size:9px;top:15px}
.callout,.highlight-box,.quick-summary,.advice-list,.strava-links{margin:40px 0;padding:28px 30px;background:var(--rpo-paper);border-left:4px solid var(--rpo-yellow)}.callout .label,.hb-label,.quick-summary-title,.al-title,.sl-title{display:block;margin-bottom:10px;font-family:var(--rpo-mono);font-size:9px;letter-spacing:.16em;text-transform:uppercase;color:#777}.callout p:last-child,.highlight-box p:last-child{margin-bottom:0}.callout strong[style]{color:#111!important}.pull-quote{margin:48px 0;padding:32px 0 32px 34px;border-left:5px solid var(--rpo-yellow);font-family:var(--rpo-head);font-size:clamp(31px,4vw,47px);font-weight:700;line-height:1.05;text-transform:uppercase}.pull-quote p{margin:0}.pull-quote .pq-source{display:block;margin-top:15px;font-family:var(--rpo-mono);font-size:9px;letter-spacing:.13em;text-transform:uppercase;color:#777}
.stats-row,.stats-bar{display:grid!important;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:1px;margin:38px 0;background:var(--rpo-line);border:1px solid var(--rpo-line);padding:0!important;border-radius:0!important}.stat-cell,.stats-bar .stat{min-width:0!important;padding:21px!important;background:var(--rpo-yellow);border:0!important}.stat-cell .v,.stat-v{display:block;font-family:var(--rpo-head);font-size:34px;font-weight:900;line-height:1}.stat-cell .l,.stat-l{display:block;margin-top:6px;font-family:var(--rpo-mono);font-size:8px;letter-spacing:.12em;text-transform:uppercase;color:#555}
.zone-table,.pace-table,.data-viz{margin:36px 0;border:1px solid var(--rpo-line);background:#fff;overflow:hidden}.zone-row,.pace-row{display:grid;grid-template-columns:minmax(74px,.28fr) minmax(0,1fr) minmax(90px,.4fr);gap:18px;align-items:center;padding:15px 18px;border-bottom:1px solid var(--rpo-line)}.zone-row:last-child,.pace-row:last-child{border-bottom:0}.zone-row.header,.pace-row.header{background:#111;color:#fff;font-family:var(--rpo-mono);font-size:8px;letter-spacing:.12em;text-transform:uppercase}.zone-row.highlighted,.pace-row.highlighted,.zone-row.highlight,.pace-row.highlight{background:#fff7c5}.zone-row .z,.pace-row .z{font-family:var(--rpo-head);font-size:22px;font-weight:800;text-transform:uppercase}.zone-row .name,.pace-row .name{font-weight:600}.zone-row .desc,.pace-row .desc,.zone-row .hr,.pace-row .hr{font-size:13px;color:#666}.data-viz{padding:25px}.data-viz-title{margin-bottom:18px;font-family:var(--rpo-mono);font-size:9px;letter-spacing:.13em;text-transform:uppercase;color:#777}.data-viz .bar{background:var(--rpo-yellow)!important}
.checklist{border-top:1px solid var(--rpo-line)}.checklist li{padding-top:14px;padding-bottom:14px}.checklist li::before{content:"✓"}
.mistake{display:grid;grid-template-columns:90px minmax(0,1fr);gap:25px;margin:0;border-top:1px solid var(--rpo-line);padding:35px 0}.mistake-number{font-family:var(--rpo-head);font-size:68px;font-weight:900;line-height:.8;color:#ddd}.mistake-label,.fix-label{font-family:var(--rpo-mono);font-size:8px;letter-spacing:.14em;text-transform:uppercase;color:#777}.mistake-title{margin:8px 0 14px!important;font-family:var(--rpo-head);font-size:34px!important;font-weight:800;line-height:1;text-transform:uppercase}.mistake-body p{margin-bottom:14px}.mistake-fix{margin-top:18px;padding:18px;background:var(--rpo-paper)}
.segments{display:grid;grid-template-columns:1fr 1fr;gap:1px;margin:36px 0;background:var(--rpo-line);border:1px solid var(--rpo-line)}.seg{background:#fff;padding:24px}.seg-num{font-family:var(--rpo-head);font-size:31px;font-weight:900;color:#111}.seg-title{font-weight:700;margin:4px 0}.seg-desc{font-size:14px;color:#666}.article-img{margin:42px 0}.article-img img{width:100%;max-height:620px;object-fit:cover}.article-img figcaption{margin-top:9px;font-family:var(--rpo-mono);font-size:8px;letter-spacing:.11em;text-transform:uppercase;color:#888}.sl-items{display:grid;gap:7px}.sl-item{font-size:14px}
.references{margin-top:65px;padding-top:25px;border-top:1px solid var(--rpo-line);font-size:13px;color:#777}.references h3{font-size:25px}.references ol,.references ul{margin-top:12px}.references li{padding:7px 0 7px 26px}
.article-author-section{padding:0 0 clamp(80px,9vw,130px);background:#fff}.author-panel{display:grid;grid-template-columns:110px minmax(0,1fr) auto;gap:36px;align-items:center;padding-top:48px;border-top:1px solid var(--rpo-line)}.author-monogram{width:110px;height:110px;display:flex;align-items:center;justify-content:center;background:var(--rpo-yellow);font-family:var(--rpo-head);font-size:48px;font-weight:900}.author-panel h2{margin:10px 0 8px;font-family:var(--rpo-head);font-size:43px;line-height:1;text-transform:uppercase}.author-panel p{margin:0;max-width:720px;color:#666;line-height:1.6}
.article-related-new{padding:clamp(80px,9vw,135px) 0;background:var(--rpo-paper)}.related-head{display:flex;justify-content:space-between;gap:35px;align-items:end;margin-bottom:45px}.related-head h2{margin-top:16px}.related-grid-new{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--rpo-line);border:1px solid var(--rpo-line)}.related-card-new{min-height:330px;padding:27px;background:#fff;display:flex;flex-direction:column;transition:.25s}.related-card-new:hover{background:var(--rpo-yellow)}.related-card-new span{font-family:var(--rpo-mono);font-size:8px;letter-spacing:.14em;text-transform:uppercase;color:#777}.related-card-new h3{margin:auto 0 25px;font-family:var(--rpo-head);font-size:clamp(30px,3vw,43px);line-height:.96;text-transform:uppercase}.related-card-new i{font-style:normal;font-size:22px}.article-cta-new{padding:clamp(85px,9vw,135px) 0;background:var(--rpo-yellow)}.article-cta-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(330px,.48fr);gap:8vw;align-items:end}.article-cta-grid h2{font-size:clamp(65px,9vw,135px);margin-top:20px}.article-cta-grid p{font-size:19px;line-height:1.6;margin:0 0 28px}
.site-footer{background:#0f0f0f;color:#fff;padding:70px 0 24px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,.7fr);gap:60px;padding-bottom:55px;border-bottom:1px solid var(--rpo-line-dark)}.footer-brand img{width:48px;height:48px}.footer-brand p{max-width:340px;margin:22px 0 0;color:rgba(255,255,255,.55);font-size:15px;line-height:1.65}.footer-col{display:flex;flex-direction:column;gap:10px}.footer-col h4{margin:0 0 10px;font-family:var(--rpo-mono);font-size:9px;letter-spacing:.16em;text-transform:uppercase;color:var(--rpo-yellow)}.footer-col a{color:rgba(255,255,255,.64);font-size:14px}.footer-col a:hover{color:#fff}.footer-bottom{display:flex;justify-content:space-between;gap:30px;padding-top:23px;font-family:var(--rpo-mono);font-size:8px;letter-spacing:.13em;text-transform:uppercase;color:rgba(255,255,255,.38)}
@media(max-width:1050px){.article-hero-grid{grid-template-columns:1fr}.article-hero-art{min-height:300px}.article-hero-art b{font-size:210px}.article-layout{grid-template-columns:190px minmax(0,1fr);gap:55px}.footer-grid{grid-template-columns:1fr 1fr}.author-panel{grid-template-columns:90px 1fr}.author-monogram{width:90px;height:90px}.author-panel .rpo-btn{grid-column:2}}
@media(max-width:760px){.article-hero{padding-top:115px}.article-hero-art{min-height:240px}.article-hero-art b{font-size:150px}.article-meta-new span{width:100%;border-right:0;border-bottom:1px solid rgba(255,255,255,.14);padding:11px 0;margin:0}.article-meta-new span:last-child{border-bottom:0}.article-layout{display:block}.article-sidebar{display:none}.article-content{font-size:17px}.article-content h2{margin-top:62px}.mistake{grid-template-columns:55px 1fr;gap:15px}.mistake-number{font-size:45px}.segments{grid-template-columns:1fr}.zone-row,.pace-row{grid-template-columns:65px 1fr}.zone-row>*:last-child,.pace-row>*:last-child{grid-column:2}.author-panel{grid-template-columns:70px 1fr;gap:20px}.author-monogram{width:70px;height:70px;font-size:32px}.author-panel h2{font-size:35px}.author-panel p{grid-column:1/-1}.author-panel .rpo-btn{grid-column:1/-1}.related-head{align-items:flex-start;flex-direction:column}.related-grid-new{grid-template-columns:1fr}.related-card-new{min-height:250px}.article-cta-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:35px}.footer-bottom{flex-direction:column}}