:root{color-scheme:light;--paper:#f5f4ed;--white:#fffdf7;--ink:#192621;--muted:#5c6962;--night:#172321;--panel:#23332d;--line:#dcded3;--gold:#efbd69;--mint:#8ed5b6;--forest:#17604a;--shell:1280px;--radius:22px;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper)}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;min-width:300px;line-height:1.55}
[hidden]{display:none!important}
a{color:inherit}
img{max-width:100%;height:auto}
button,input,select,textarea{font:inherit}
button,select,input[type=range]{cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #1d9874;outline-offset:4px}
h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.1;letter-spacing:-.04em}
.shell{width:min(calc(100% - 72px),var(--shell));margin-inline:auto}
.skip{position:absolute;left:12px;top:-80px;z-index:4;background:var(--gold);color:var(--ink);padding:9px 14px}
.skip:focus{top:8px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.mast{background:var(--night);color:#f1f1e6;border-bottom:1px solid #ffffff15;position:sticky;top:0;z-index:3}
.mast-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:71px}
.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;font-size:23px;font-weight:760;line-height:1;letter-spacing:-.055em;white-space:nowrap}
.brand img{flex:none}.brand small{display:block;margin-top:5px;font-size:8px;font-weight:700;letter-spacing:.18em;color:#a0b4ab}.brand-light{color:#91d3b7}
.main-nav{display:flex;align-items:center;gap:clamp(17px,3vw,36px)}
.main-nav a,.footer nav a{color:#cad6ce;font-weight:600;font-size:13px;text-decoration:none;white-space:nowrap}
.main-nav a:hover,.main-nav [aria-current=page],.footer nav a:hover{color:var(--gold)}
.main-nav svg{vertical-align:middle}
.button,.deal-button{display:inline-flex;align-items:center;justify-content:center;gap:11px;padding:11px 17px;min-height:43px;border:1px solid transparent;border-radius:9px;font-weight:740;font-size:13px;text-decoration:none;white-space:nowrap;transition:background .18s,border .18s,color .18s}
.mast-action,.secondary{border-color:#52605a;color:#f0efe4;background:transparent}
.mast-action:hover,.secondary:hover{border-color:#b8c8bd;background:#ffffff11}
.primary,.deal-button{background:var(--gold);color:#172321}.primary:hover,.deal-button:hover{background:#ffd594}
.ticker{background:#1c2b26;color:#f1f1e6;border-bottom:1px solid #ffffff16}
.ticker-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.quote{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:15px 19px;border-right:1px solid #ffffff17;animation:arrive .52s both}
.quote:first-child{border-left:1px solid #ffffff17}
.quote-1{animation-delay:.08s}.quote-2{animation-delay:.16s}.quote-3{animation-delay:.24s}
.quote-name{font-size:10px;letter-spacing:.14em;font-weight:800;color:#aebfb5}
.quote-value{font-weight:740;font-size:24px;line-height:1.25;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.quote-value small{font-weight:500;font-size:11px;color:#acbdb3;letter-spacing:0}
.quote time{color:#a4b6ab;font-size:10px;white-space:nowrap}
.spark{width:67px;flex:none}.gold .spark{color:#eebc68}.mint .spark{color:#8ed5b6}
.hero,.page-intro{color:#f7f5e9;background:radial-gradient(ellipse at 82% 12%,#263d32 0,transparent 52%),var(--night);position:relative;isolation:isolate}
.hero::before,.page-intro::before{content:"";position:absolute;inset:0;z-index:-1;background-image:radial-gradient(#9db7a633 1px,transparent 1px);background-size:23px 23px;mask-image:linear-gradient(100deg,transparent 12%,#000 100%);opacity:.33}
.hero-layout{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:clamp(28px,5.4vw,78px);align-items:center;padding:57px 0 64px}
.hero-copy{animation:arrive .6s both}.hero-layout>.chart-panel{animation:arrive .65s .12s both}
.eyebrow{font-size:10px;letter-spacing:.17em;font-weight:800;color:var(--gold);display:block}
.ink{color:var(--forest)}.eyebrow i{width:7px;height:7px;border-radius:50%;display:inline-block;background:var(--mint);margin-right:6px;vertical-align:1px}
.hero-tag{display:inline-flex;align-items:center;border:1px solid #6c84735c;border-radius:30px;padding:6px 10px;color:#cfddd1}
.hero h1{font-size:clamp(58px,7.7vw,116px);line-height:.9;margin:22px 0 19px;letter-spacing:-.087em;font-weight:760}
.hero h1 em{font-style:normal;color:var(--gold)}
.hero-copy>p{font-size:clamp(16px,1.65vw,21px);line-height:1.5;color:#bdcdc2;max-width:40ch}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:25px}
.hero-actions .button{padding:11px 15px}
.hero-foot{display:flex;gap:8px;align-items:center;flex-wrap:wrap;color:#a0b4a8;font-size:9px;font-weight:750;letter-spacing:.1em;margin-top:25px}
.hero-foot span{color:var(--mint);padding-left:8px}.hero-foot span:first-child{padding-left:0}
.chart-panel{min-width:0;background:#20322b;color:#f7f5e9;border:1px solid #455c50;border-radius:var(--radius);padding:19px 21px 13px;box-shadow:0 20px 54px #0a120e26}
.chart-head,.chart-toolbar,.chart-read{display:flex;justify-content:space-between;gap:12px;align-items:center}
.chart-head h2{font-size:clamp(17px,2vw,25px);margin-top:5px;letter-spacing:-.035em}
.chart-eyebrow{color:#b5c8b9}
.chart-link{display:grid;place-items:center;border:1px solid #496154;border-radius:8px;width:35px;height:35px;color:#d3ded5;flex:none}
.chart-link:hover{color:var(--gold);border-color:var(--gold)}
.chart-toolbar{margin-top:15px}.toggles{display:flex;background:#172822;border-radius:8px;gap:2px;padding:3px}
.toggles button{border:0;background:transparent;color:#bacbc1;padding:4px 9px;border-radius:6px;font-size:11px;font-weight:730}
.toggles button[aria-pressed=true]{background:#3a5145;color:#f4f4ea}
.plot{margin:4px -6px 0 -8px}.plot svg{display:block;width:100%;height:auto;overflow:visible}
.chart-axis path{stroke:#829a881e;vector-effect:non-scaling-stroke}.chart-axis text,.chart-dates text{fill:#a9bcb0;font-size:12px}
.chart-brent,.chart-wti{fill:none;stroke-width:2.4;stroke-linejoin:round;stroke-linecap:round;vector-effect:non-scaling-stroke}
.chart-brent{stroke:var(--gold)}.chart-wti{stroke:var(--mint)}
.marker-line{stroke:#bad1c2;stroke-width:1;stroke-dasharray:3 4}.marker-point{fill:#26392e;stroke-width:2}
.legend{display:flex;flex-wrap:wrap;gap:7px 15px;font-size:11px;color:#e2eade;font-variant-numeric:tabular-nums}
.legend-item{display:flex;gap:6px;align-items:center}.legend i{width:8px;height:8px;border-radius:50%;background:var(--gold)}.legend .second i{background:var(--mint)}
.period-label select{max-width:116px;border:1px solid #4e6658;color:#e4ede3;background:#20332b;border-radius:7px;padding:4px 6px;font-size:11px}
.chart-note{font-size:10px;color:#aec1b4;margin-top:8px}.chart-note a{color:#c5e4d2;text-underline-offset:2px}
.section{padding:58px 0}
.section h2{font-size:clamp(31px,4.6vw,61px);line-height:1;letter-spacing:-.063em}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:23px}
.section-head h2,.sim-intro h2{margin:8px 0 9px}
.section-head p,.sim-intro>p,.embed-cta p{color:var(--muted);font-size:16px;max-width:54ch}
.inline-link{display:inline-flex;gap:8px;align-items:center;line-height:1.35;color:#19583f;font-size:13px;font-weight:750;text-decoration:none}
.inline-link:hover{text-decoration:underline;text-underline-offset:4px}.inline-link svg{flex:none}
.sim-section{background:#eceee3;scroll-margin-top:75px}
.sim-layout{display:grid;grid-template-columns:minmax(0,.88fr) minmax(0,1.12fr);align-items:center;gap:clamp(24px,6vw,92px)}
.sim-intro .inline-link{margin-top:19px}
.sim-card,.calc-panel,.method-card,.article,.story,.tool-card,.data-table{background:var(--white);border:1px solid var(--line);border-radius:var(--radius)}
.sim-card,.calc-panel{padding:24px}
.sim-title{display:flex;gap:12px;align-items:center;margin-bottom:16px}
.sim-title h3,.sim-title h2{font-size:22px;letter-spacing:-.04em;line-height:1.12}
.sim-title p{color:var(--muted);font-size:12px;margin-top:2px}
.tool-icon{width:43px;height:43px;border-radius:11px;background:#e8eee3;color:var(--forest);display:grid;place-items:center;flex:none}
.form-grid,.two-fields,.blog-filters{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.form-grid label,.range-label,.blog-filters label,.admin-form label,.widget-grid label{font-size:12px;font-weight:740;color:#34453b;display:block}
.form-grid label small{color:#586d60;font-weight:550;font-size:11px}
.form-grid input,.form-grid select,.blog-filters input,.blog-filters select,.admin-form input:not([type=checkbox]),.admin-form textarea,.admin-form select,.large-search input,.widget-grid textarea{display:block;width:100%;padding:9px 10px;background:#f8f9f3;border:1px solid #ccd5c8;border-radius:8px;color:#172820;margin-top:5px}
.form-grid input,.form-grid select{font-size:16px;font-weight:660}
.range-label{display:flex;justify-content:space-between;gap:10px;margin-top:15px}
.range-label strong{color:var(--forest)}
input[type=range]{width:100%;accent-color:#2b7a5e;margin:8px 0 0}
.range-ends{display:flex;justify-content:space-between;color:#65766b;font-size:11px}
.sim-result,.calc-results{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:15px}
.sim-result>div,.calc-results>div{background:#ecf3e8;padding:11px 13px;border-radius:9px}
.sim-result span,.calc-results span{display:block;color:#486254;font-size:11px;font-weight:650}
.sim-result strong,.calc-results strong{display:block;font-size:clamp(20px,2.7vw,34px);font-variant-numeric:tabular-nums;letter-spacing:-.055em;line-height:1.2;overflow-wrap:anywhere}
.calc-results .validation{grid-column:1/-1;color:#8e351f;font-weight:650}
.tools-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
.tool-card{padding:15px;text-decoration:none;display:flex;flex-direction:column;transition:background .18s,border .18s,transform .18s}
.tool-card:hover{border-color:#83a998;transform:translateY(-4px);background:#f9fbf4}
.tool-kicker{font-size:10px;color:var(--forest);font-weight:780;letter-spacing:.1em;text-transform:uppercase;margin:13px 0 5px}
.tool-card h3{font-size:19px;line-height:1.1}.tool-card p,.story p{color:var(--muted);font-size:13px;margin:8px 0 13px}
.tool-go{font-size:11px;color:var(--forest);font-weight:750;display:flex;align-items:center;justify-content:space-between;gap:4px;margin-top:auto}
.stories-section{background:#eeeee5}
.stories{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.story{overflow:hidden;display:flex;flex-direction:column}.story-image{display:block;aspect-ratio:2.65;background:#1e3028;overflow:hidden}.story-image img{width:100%;height:100%;object-fit:cover;display:block}.story:nth-child(2n) .story-image img[src*="story-default"]{transform:scaleX(-1);filter:hue-rotate(39deg)}.story:nth-child(3n) .story-image img[src*="story-default"]{filter:hue-rotate(-34deg)}
.story-inner{padding:17px;display:flex;flex-direction:column;flex:1}.story-meta{font-size:10px;color:var(--forest);font-weight:780;text-transform:uppercase;letter-spacing:.07em;margin-bottom:8px}.story-meta span,.article-meta span{margin:0 4px}
.story h3{font-size:23px}.story h3 a{text-decoration:none}.story h3 a:hover{text-decoration:underline;text-underline-offset:4px}.story .inline-link{margin-top:auto}
.embed-cta{background:#25453a;color:#fffbea}.embed-cta>.shell{display:flex;justify-content:space-between;gap:18px;align-items:center}.embed-cta h2{margin:7px 0}.embed-cta p{color:#d6e5d9}
.footer{padding:25px 0;background:var(--night);color:#f1f2e8}
.footer-top,.footer-bottom,.footer nav{display:flex;align-items:center;gap:14px 23px;flex-wrap:wrap}
.footer-top,.footer-bottom{justify-content:space-between}.footer-bottom{border-top:1px solid #ffffff1a;margin-top:19px;padding-top:13px;color:#a9bbb0;font-size:11px}
.page-intro .shell{padding:40px 0 46px}.page-intro h1{font-size:clamp(37px,6.2vw,82px);margin:7px 0 8px;max-width:20ch;letter-spacing:-.067em;line-height:1.01}.page-intro p{color:#c1d1c5;font-size:clamp(15px,2vw,19px);max-width:65ch}.back-link{display:inline-block;color:#bbd4c5;font-size:12px;margin-bottom:16px;text-underline-offset:3px}
.calc-layout,.market-layout,.article-layout{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:18px;align-items:start}
.method-card,.article,.data-table{padding:22px}.method-card h2,.article h2,.data-table h2{font-size:clamp(22px,2.7vw,34px);letter-spacing:-.04em;line-height:1.14;margin:6px 0 10px}.method-card h3{font-size:17px;margin:15px 0 4px}
.method-card p,.method-card li,.article p,.article li{color:#4c6154;font-size:14px;margin:0 0 10px}
.formula{background:#eef2e8;padding:10px 12px;border-left:3px solid #54886c;font-weight:650}
.method-card a:not(.button),.article a{color:#175c46;text-underline-offset:3px}.method-card>.inline-link{margin-top:6px}
.data-table{min-width:0}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;text-align:left;font-size:13px;font-variant-numeric:tabular-nums}td,th{padding:8px 10px;border-bottom:1px solid #e0e6d9;white-space:nowrap}thead th{background:#eaf0e5;color:#315345}tbody tr:nth-child(even){background:#fafbf6}
.article-layout{grid-template-columns:minmax(0,2.5fr) minmax(0,1fr)}.article{padding:clamp(19px,4vw,45px)}.article p,.article li{font-size:16px;line-height:1.72}.article h2{margin-top:23px;scroll-margin-top:90px}.article h3{margin:15px 0 9px}.article-meta{margin-bottom:14px;color:#557162;font-size:12px}.article-aside{position:sticky;top:88px}.article-aside ol{padding-left:20px}.method-article{max-width:840px}.feature-image{width:100%;max-height:420px;object-fit:cover;border-radius:12px;margin-bottom:14px}
.blog-filters{max-width:590px;margin-bottom:18px}
.widget-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.widget-grid textarea{font:12px/1.55 ui-monospace,monospace;resize:vertical}.widget-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:12px}.widget-actions a{font-size:13px}.copy-status:empty{display:none}
.embed-body{background:#f1f1e8}.embed-inner{width:min(calc(100% - 24px),760px);margin:11px auto}.embed-inner h1{font-size:22px;margin:5px 0 10px}.embed-credit{font-size:12px;text-align:right;color:#486454;margin-top:8px}
.managed-panel{margin:0 auto 17px;padding:14px 18px;background:#e9eee3;border:1px solid var(--line);border-radius:12px}.managed-panel .eyebrow{color:var(--forest)}.managed-links{display:flex;gap:7px 16px;flex-wrap:wrap}.managed-links a{font-size:13px;color:#19583f}
.admin-shell{width:min(calc(100% - 32px),1050px);margin:25px auto 50px}.admin-shell>.brand{margin-bottom:22px}.admin-shell>.brand .brand-light{color:var(--forest)}
.admin-top,.admin-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:14px}.admin-top h1{margin-right:auto}
.admin-box{padding:20px;border:1px solid var(--line);border-radius:14px;background:var(--white);overflow:auto}.admin-box .eyebrow{color:var(--forest)}.admin-box h2,.admin-box h1{margin:6px 0 12px}.admin-login{max-width:520px;margin:10px auto}
.admin-form{display:grid;gap:13px;margin:14px 0}.admin-form textarea{resize:vertical}.admin-form label small{display:block;color:var(--muted);margin-top:4px}.admin-form input[type=checkbox]{margin-right:6px}.admin-help{margin:8px 0;color:var(--muted);font-size:13px}.admin-message{margin:8px 0;padding:9px 12px;background:#e3f1e4;border-radius:8px}.admin-message.error{background:#f9e5da;color:#872e23}
.text-link,.icon-button,.large-search button{border:1px solid #bacdc0;background:#f6faf4;padding:6px 9px;border-radius:7px;color:var(--forest);font-size:13px}.content-editor{min-height:240px;font:13px/1.55 ui-monospace,monospace}.admin-status{background:#e5f3e8;padding:4px 8px;border-radius:7px}.admin-status.draft{background:#fcf0d9}.large-search{display:flex;gap:6px;max-width:400px}.large-search input{margin:0}.format-tools{margin:0}.admin-table td{white-space:normal}
@keyframes arrive{from{opacity:0;transform:translateY(11px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:1000px){.tools-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.spark{width:45px}.hero-layout{gap:28px}.mast-action{display:none}}
@media(max-width:740px){.shell{width:calc(100% - 32px)}.mast{position:relative}.mast-inner{flex-wrap:wrap;justify-content:center;gap:9px;padding:12px 0}.main-nav{width:100%;justify-content:center;gap:16px}.main-nav a{font-size:11px}.ticker-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.quote{padding:8px 10px;border-bottom:1px solid #ffffff15}.quote:nth-child(3){border-left:1px solid #ffffff17}.quote-value{font-size:21px}.hero-layout,.sim-layout,.calc-layout,.market-layout,.article-layout{grid-template-columns:minmax(0,1fr);gap:18px}.hero-layout{padding:34px 0}.hero h1{font-size:clamp(50px,12vw,81px);margin:15px 0 12px}.hero-actions{margin-top:15px}.hero-foot{margin-top:14px}.chart-panel{padding:14px 12px 9px}.section{padding:32px 0}.section-head{align-items:start;flex-direction:column;gap:8px;margin-bottom:15px}.sim-card,.calc-panel,.method-card,.data-table{padding:15px}.tools-grid,.stories{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.tool-card{padding:11px}.article-aside{position:static}.widget-grid{grid-template-columns:minmax(0,1fr)}.embed-cta>.shell{align-items:start;flex-direction:column}}
@media(max-width:390px){.spark{display:none}.hero-actions{gap:6px}.hero-actions .button{padding:8px 9px;font-size:11px}.form-grid,.two-fields,.blog-filters,.stories{grid-template-columns:minmax(0,1fr)}.tool-card h3{font-size:16px}.tool-card p{font-size:12px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.quote-detail{color:#a4b6ab;font-size:10px}
.quote-detail time{white-space:nowrap}
.quote>div{min-width:0}
.diesel-reference{display:flex;gap:8px 11px;align-items:center;flex-wrap:wrap;margin-top:10px;color:var(--muted);font-size:11px}
.diesel-button{min-height:32px;padding:5px 10px;background:#e8eee3;color:var(--forest);border-color:#bbd2c2}
.diesel-button:hover{background:#dceadf}
.sim-status{font-size:11px;color:var(--forest);margin-top:5px}
.sim-status:empty{display:none}
.table-note{margin-bottom:10px;color:var(--muted);font-size:13px}
.daily-table{max-height:380px}
.daily-table thead th{position:sticky;top:0}
.market-actions{display:grid;gap:9px;margin-top:12px}
.market-widget .ticker{border-radius:12px;overflow:hidden;border:1px solid #3c5549}
.market-widget .ticker-grid{width:100%;grid-template-columns:repeat(2,minmax(0,1fr))}
.market-widget .quote{padding:11px 12px;border:0}
.market-widget .quote:nth-child(odd){border-right:1px solid #ffffff17}
.market-widget .quote:nth-child(-n+2){border-bottom:1px solid #ffffff17}
@media(max-width:840px){.quote .spark{display:none}}