.tren-guide{--tren-ink:#173c33;--tren-accent:#7c6540;--tren-warm:#dbd4a3;--tren-paper:#f6f4ed;--tren-line:#d9ded6;color:#213d35}.tren-hero{color:#fff;background:radial-gradient(at 90% 0,#52654d,#0000 65%),#12372f;padding:clamp(2rem,6vw,4.5rem) clamp(1.1rem,4vw,3rem)}.tren-eyebrow{letter-spacing:.16em;color:var(--tren-warm);font-size:.72rem;font-weight:900}.tren-hero h1{letter-spacing:-.045em;max-width:1000px;margin:1.2rem 0 1.5rem;font-size:clamp(2.4rem,5.5vw,5rem);line-height:1.07}.tren-hero em{color:var(--tren-warm);font-style:normal}.tren-hero>p{color:#e2ece5;max-width:780px;font-size:1.2rem;line-height:1.7}.tren-hero-grid{background:#70867a;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;margin:2rem 0;display:grid}.tren-hero-grid>div{background:#21483e;padding:1.25rem}.tren-hero-grid b,.tren-hero-grid span{display:block}.tren-hero-grid b{color:var(--tren-warm);letter-spacing:.05em;font-size:clamp(1.3rem,2.3vw,1.8rem)}.tren-hero-grid span{margin-top:.4rem;font-size:.8rem;line-height:1.5}.tren-byline{color:#dbe5e0;flex-wrap:wrap;gap:1rem;font-size:.82rem;display:flex}.tren-byline a{color:#fff}.tren-guide .journal-body-layout,.tren-guide .journal-body{min-width:0}.tren-lead{border-left:6px solid var(--tren-accent);background:var(--tren-paper);padding:1.5rem;font-size:1.17rem!important}.tren-chapter{margin:4.5rem 0}.tren-chapter>header{border-top:5px solid var(--tren-ink);padding-top:1rem}.tren-chapter>header>span,.tren-figure>header>span{letter-spacing:.14em;color:#6f5939;font-size:.7rem;font-weight:900}.tren-chapter h2{letter-spacing:-.035em;margin:.5rem 0 1.5rem;font-size:clamp(1.9rem,3.5vw,2.8rem);line-height:1.15}.tren-chapter p{font-size:1.04rem;line-height:1.8}.tren-figure{border:1px solid var(--tren-line);background:#fff;margin:2.5rem 0;box-shadow:0 12px 35px #173c330a}.tren-figure>header{border-bottom:1px solid var(--tren-line);padding:1.2rem}.tren-figure h3{line-height:1.3;margin:.35rem 0!important;font-size:1.35rem!important}.tren-figure figcaption{background:var(--tren-paper);color:#5b594b;padding:1rem 1.2rem;font-size:.8rem;line-height:1.65}.tren-mechanism svg{background:#fbfcf8;width:100%;height:auto;max-height:230px;display:block}.tren-three,.tren-two{grid-template-columns:repeat(3,minmax(0,1fr));gap:.8rem;padding:1.2rem;display:grid}.tren-two{grid-template-columns:repeat(2,minmax(0,1fr))}.tren-three>div,.tren-two>div{background:var(--tren-paper);border-top:5px solid var(--tren-accent);min-width:0;padding:1rem}.tren-three>div:nth-child(2),.tren-two>div:nth-child(2){background:#edf3ef;border-color:#406d5b}.tren-three span,.tren-two span{letter-spacing:.09em;font-size:.65rem;font-weight:900;display:block}.tren-three b,.tren-two b{margin:.6rem 0;font-size:1.1rem;line-height:1.35;display:block}.tren-three p,.tren-two p{margin:.5rem 0 0;font-size:.87rem!important;line-height:1.65!important}.tren-band{background:var(--tren-ink);color:#fff;padding:1.1rem;font-size:.9rem;font-weight:700;line-height:1.6}.tren-table-wrap{max-width:100%;padding:0 1rem 1rem;overflow-x:auto}.tren-table-wrap:focus-visible{outline:3px solid var(--tren-accent);outline-offset:3px}.tren-guide table{border-collapse:collapse;text-align:left;width:100%;min-width:640px;font-size:.81rem}.tren-guide caption{text-align:left;color:#5b594b;padding:1rem 0;font-size:.8rem;line-height:1.5}.tren-guide thead{background:var(--tren-ink);color:#fff}.tren-guide th,.tren-guide td{vertical-align:top;border-bottom:1px solid var(--tren-line);padding:.85rem;line-height:1.55}.tren-bars{padding:1.4rem}.tren-bars>div{grid-template-columns:1fr 110px;gap:.6rem 1rem;margin:1rem 0;display:grid}.tren-bars span{grid-column:1/-1;font-size:.9rem;font-weight:700}.tren-bars b{align-self:center;font-size:.88rem}.tren-track{background:#edf0eb;border-radius:4px;height:26px;overflow:hidden}.tren-track i{background:#30634f;height:100%;display:block}.tren-track .tren-muted{background:#897753}.tren-bars small{color:#5b594b;font-size:.73rem;line-height:1.6;display:block}.tren-checks{padding:1.2rem}.tren-checks>div{border-bottom:1px solid var(--tren-line);grid-template-columns:1fr 1.25fr;gap:1rem;padding:1rem .2rem;display:grid}.tren-checks b{font-size:.94rem}.tren-checks span{font-size:.89rem;line-height:1.6}.tren-positive{color:#20533c;font-weight:750}.tren-neutral{color:#6c5941}.tren-ladder{counter-reset:steps;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;display:grid;margin:0!important;padding:1.3rem!important;list-style:none!important}.tren-ladder li{counter-increment:steps;background:var(--tren-paper);border-left:5px solid #406d5b;padding:1rem;margin:0!important}.tren-ladder li:before{content:"0" counter(steps);color:var(--tren-accent);font-size:1.6rem;font-weight:900;display:block}.tren-ladder b,.tren-ladder span{display:block}.tren-ladder b{margin:.4rem 0;font-size:1rem;line-height:1.4}.tren-ladder span{font-size:.88rem;line-height:1.6}.tren-callout{background:var(--tren-ink);color:#fff;border-left:7px solid var(--tren-warm);margin:2rem 0;padding:1.5rem}.tren-callout h2{color:#fff;margin-top:0}.tren-callout p{line-height:1.75;font-size:1.15rem!important}.tren-related{background:var(--tren-paper);margin:3rem 0;padding:1.5rem}.tren-guide .journal-toc>span{text-transform:uppercase;letter-spacing:.1em;color:var(--tren-accent);margin-top:1rem;font-size:.66rem;font-weight:900;display:block}.tren-guide [id]{scroll-margin-top:6rem}.tren-guide .journal-sources a{overflow-wrap:anywhere}.tren-guide .journal-toc a{min-height:44px}@media (max-width:820px){.tren-three,.tren-hero-grid{grid-template-columns:1fr}.tren-hero-grid>div{padding:1rem}.tren-hero-grid b{font-size:1.4rem}}@media (max-width:600px){.tren-two,.tren-ladder{grid-template-columns:1fr}.tren-checks>div{grid-template-columns:1fr;gap:.4rem}.tren-three,.tren-two,.tren-checks,.tren-ladder,.tren-bars{padding:1rem!important}.tren-guide .tren-figure{margin-left:0;margin-right:0}.tren-table-wrap{padding:0 .6rem .6rem}.tren-guide th,.tren-guide td{padding:.7rem}.tren-lead{padding:1.1rem}.tren-bars>div{grid-template-columns:1fr 85px}}.tren-chain{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;display:grid;margin:0!important;padding:1.3rem!important;list-style:none!important}.tren-chain li{background:#f3f5ee;border-left:4px solid #456d57;padding:1rem;margin:0!important}.tren-chain b,.tren-chain span{display:block}.tren-chain b{font-size:1rem;line-height:1.4}.tren-chain span{margin-top:.5rem;font-size:.85rem;line-height:1.6}.tren-chain .tren-gap{background:#f7f0df;border-style:dashed;border-color:#8b704c}@media (max-width:600px){.tren-chain{grid-template-columns:1fr}}.tren-equation{text-align:center;color:#fff;letter-spacing:.03em;background:#173c33;padding:1.4rem;font-size:.9rem;font-weight:800;line-height:1.8}.tren-equation span{color:#e2c798;margin:0 .35rem}.tren-chart{padding:1.25rem}.tren-chart>p,.tren-chart>small{color:#606858;font-size:.78rem!important;line-height:1.6!important}.tren-chart-row{grid-template-columns:minmax(0,1fr) 115px;gap:.45rem .7rem;margin:1.25rem 0;display:grid}.tren-chart-row>b{grid-column:1/-1;font-size:.9rem}.tren-chart-row>strong{align-self:center;font-size:.8rem}.tren-chart-track{background:#f0f2eb;border-left:1px solid #4c6858;height:28px;position:relative}.tren-chart-track>span{height:100%;display:block}.tren-chart-track>i{border:0;border-left:2px solid #121e17;border-right:2px solid #121e17;height:13px;position:absolute;top:8px}.tren-chart-track>i:after{content:"";background:#121e17;width:100%;height:2px;position:absolute;top:5px}.tren-guide .journal-body-layout{grid-template-columns:minmax(0,1fr) 235px}.tren-guide .journal-toc{align-self:start}.tren-guide .journal-body>p{line-height:1.8}.tren-guide .tren-three{grid-template-columns:1fr}.tren-guide .tren-three>div{border-top:0;border-left:5px solid #8c683e}.tren-hero h1{font-size:clamp(2.2rem,4.6vw,4.5rem)}@media (max-width:900px){.tren-guide .journal-body-layout{grid-template-columns:1fr}.tren-guide .journal-toc{order:-1;position:static}.tren-chart-row{grid-template-columns:minmax(0,1fr) 110px}}