/* Jim Thomas Energy Consultancy — Theme B
   Calmer and more classical. Warm paper, deep navy, one measured blue.
   Serif headings, sans body, mono for labels and figures. */

:root{
  --paper:#FDFCFA;
  --paper-2:#F3F1EB;
  --ink:#12263F;
  --ink-soft:#4E657D;
  --ink-faint:#93A3B4;
  --accent:#1D5FA8;
  --accent-dim:#164B85;
  --line:rgba(18,38,63,.13);
  --maxw:1080px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:Inter,"Helvetica Neue",Arial,sans-serif;font-size:16.5px;line-height:1.68;-webkit-font-smoothing:antialiased}
h1,h2,h3,.serif{font-family:Newsreader,Georgia,"Times New Roman",serif;font-weight:500;letter-spacing:-.02em}
.mono{font-family:"IBM Plex Mono",ui-monospace,monospace;letter-spacing:.16em;text-transform:uppercase;font-size:10.5px;font-weight:500}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 30px}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
img,svg{max-width:100%}

/* header */
.site-head{position:sticky;top:0;z-index:50;background:rgba(253,252,250,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.head-in{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px 30px;max-width:var(--maxw);margin:0 auto}
.brand{display:flex;align-items:center;gap:13px;text-decoration:none}
.brand .name{font-family:Newsreader,Georgia,serif;font-size:21px;font-weight:500;letter-spacing:-.015em;line-height:1.05;display:block}
.brand .desc{font-family:"IBM Plex Mono",monospace;font-size:8.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-faint);display:block;margin-top:3px}
.nav{display:flex;gap:30px;align-items:center}
.nav a{font-size:14.5px;text-decoration:none;color:var(--ink-soft)}
.nav a:hover{color:var(--accent)}
@media(max-width:880px){.nav a:not(.btn){display:none}}

.btn{display:inline-block;text-decoration:none;font-weight:500;font-size:15px;padding:14px 26px;border-radius:2px;border:1px solid var(--ink);background:var(--ink);color:var(--paper);transition:background .2s,border-color .2s,color .2s;font-family:Inter,sans-serif;letter-spacing:.01em}
.btn:hover{background:var(--accent);border-color:var(--accent)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:transparent;border-color:var(--ink);color:var(--accent)}
.nav .btn{font-size:13.5px;padding:10px 18px}

/* hero — centred, generous */
.hero{padding:96px 0 0;text-align:center}
.lockup{margin:0 auto 40px;display:block}
.hero .eyebrow{color:var(--accent);display:block;margin-bottom:26px}
.hero h1{font-size:clamp(38px,5.2vw,60px);line-height:1.1;margin:0 auto 26px;max-width:16em}
.hero h1 em{font-style:italic;color:var(--accent)}
.hero .lede{font-size:18.5px;line-height:1.66;color:var(--ink-soft);max-width:33em;margin:0 auto 36px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.hero-rule{width:100%;height:1px;background:var(--line);margin-top:88px}
@media(max-width:820px){.hero{padding:56px 0 0}.hero-rule{margin-top:60px}}

/* sequence diagram */
.sequence{padding:70px 0 84px;border-bottom:1px solid var(--line)}
.seq-head{text-align:center;margin-bottom:52px}
.seq-head .mono{color:var(--accent);display:block;margin-bottom:14px}
.seq-head h2{font-size:clamp(24px,3vw,32px);max-width:20em;margin:0 auto}
.seq{display:grid;grid-template-columns:repeat(4,1fr);position:relative}
.seq::before{content:"";position:absolute;top:19px;left:12%;right:12%;height:1px;background:var(--line)}
.seq-step{text-align:center;padding:0 16px;position:relative}
.seq-dot{width:38px;height:38px;border-radius:50%;background:var(--paper);border:1px solid var(--line);margin:0 auto 20px;display:flex;align-items:center;justify-content:center;font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--ink-faint);position:relative;z-index:2;transition:background .4s ease,border-color .4s ease,color .4s ease}
.seq-step.on .seq-dot{background:var(--accent);border-color:var(--accent);color:#fff}
.seq-step h3{font-size:19px;margin-bottom:8px}
.seq-step p{font-size:14.5px;color:var(--ink-soft);line-height:1.55}
.seq-note{text-align:center;margin-top:48px;font-size:15.5px;color:var(--ink-soft);max-width:36em;margin-left:auto;margin-right:auto;font-style:italic}
@media(max-width:820px){.seq{grid-template-columns:1fr;gap:34px}.seq::before{top:0;bottom:0;left:19px;right:auto;width:1px;height:auto}.seq-step{text-align:left;display:grid;grid-template-columns:38px 1fr;gap:20px;padding:0}.seq-dot{margin:0}}

/* sections */
.section{padding:88px 0;border-bottom:1px solid var(--line)}
.section.tint{background:var(--paper-2)}
.section .mono.label{color:var(--accent);display:block;margin-bottom:24px}
.section h2{font-size:clamp(26px,3.3vw,38px);line-height:1.16;margin-bottom:24px;max-width:17em}
.section h3{font-size:21px;margin-bottom:10px}
.section p.body{font-size:17.5px;color:var(--ink-soft);max-width:36em}
.section p.body + p.body{margin-top:18px}
.centred{text-align:center}
.centred h2,.centred p.body{margin-left:auto;margin-right:auto}

/* split */
.split{display:grid;grid-template-columns:1fr 1fr;margin-top:48px;border-top:1px solid var(--ink)}
.split-col{padding:34px 0 36px}
.split-col:first-child{border-right:1px solid var(--line);padding-right:40px}
.split-col:last-child{padding-left:40px}
.split-col .mono{color:var(--accent);display:block;margin-bottom:10px}
.split-col h3{margin-bottom:20px}
.split-col ul{list-style:none;font-size:16px;color:var(--ink-soft)}
.split-col li{padding:11px 0;border-top:1px solid var(--line)}
@media(max-width:760px){.split{grid-template-columns:1fr}.split-col:first-child{border-right:0;padding-right:0;border-bottom:1px solid var(--line)}.split-col:last-child{padding-left:0}}

/* doors */
.doors{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:48px}
.door{border:1px solid var(--line);background:var(--paper);padding:38px 34px 32px;display:flex;flex-direction:column;border-radius:2px}
.door h3{font-size:25px;margin-bottom:14px}
.door p{font-size:16px;color:var(--ink-soft);margin-bottom:22px}
.door ul{list-style:none;font-size:15px;color:var(--ink-soft);margin-bottom:28px}
.door li{padding:10px 0;border-top:1px solid var(--line)}
.door .btn{margin-top:auto;align-self:flex-start}
@media(max-width:760px){.doors{grid-template-columns:1fr}}

/* pull quote */
.pull{border-left:2px solid var(--accent);padding:6px 0 6px 26px;margin:44px 0 0;max-width:34em}
.pull p{font-family:Newsreader,Georgia,serif;font-size:23px;line-height:1.42;font-style:italic;color:var(--ink)}

/* contact */
.contact{background:var(--ink);color:var(--paper);border-bottom:0;text-align:center}
.contact h2{color:var(--paper);margin-left:auto;margin-right:auto}
.contact p.body{color:#AFC0D2;margin-left:auto;margin-right:auto}
.contact .mono.label{color:#7FAEE4}
.contact .btn{background:var(--paper);border-color:var(--paper);color:var(--ink)}
.contact .btn:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.contact-lines{margin-top:34px;display:flex;gap:30px;flex-wrap:wrap;justify-content:center;color:#AFC0D2;font-family:"IBM Plex Mono",monospace;font-size:12.5px}
.contact-lines a{text-decoration:none}
.contact-lines a:hover{color:#7FAEE4}

/* footer */
.site-foot{padding:40px 0 50px;font-size:13.5px;color:var(--ink-faint);line-height:1.6;text-align:center}
.site-foot .disclose{max-width:46em;margin:0 auto 18px}
.foot-nav{display:flex;gap:22px;flex-wrap:wrap;justify-content:center;margin-bottom:20px}
.foot-nav a{text-decoration:none;color:var(--ink-soft);font-size:14px}
.foot-nav a:hover{color:var(--accent)}

/* reveal */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .seq-step .seq-dot{background:var(--accent);border-color:var(--accent);color:#fff}
}

/* ---------- interior pages ---------- */
.page-head{padding:84px 0 58px;border-bottom:1px solid var(--line)}
.page-head .mono.eyebrow{color:var(--accent);display:block;margin-bottom:22px}
.page-head h1{font-size:clamp(34px,4.8vw,54px);line-height:1.1;max-width:15em;margin-bottom:24px}
.page-head .lede{font-size:18.5px;line-height:1.62;color:var(--ink-soft);max-width:34em}
@media(max-width:820px){.page-head{padding:52px 0 42px}}

/* price cards */
.prices{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}
.price{border:1px solid var(--line);padding:34px 30px 30px;display:flex;flex-direction:column;background:var(--paper);border-radius:2px}
.price.lead{border-color:var(--ink);position:relative}
.price.lead::before{content:"Most popular";position:absolute;top:0;right:0;background:var(--ink);color:var(--paper);font-family:"IBM Plex Mono",monospace;font-size:9px;letter-spacing:.14em;text-transform:uppercase;padding:6px 11px}
.price .kicker{color:var(--ink-faint);display:block;margin-bottom:18px}
.price h3{font-size:22px;margin-bottom:14px}
.price .fig{font-family:Newsreader,Georgia,serif;font-size:42px;font-weight:500;line-height:1;letter-spacing:-.02em;margin-bottom:8px;color:var(--ink)}
.price .fig span{font-family:Inter,sans-serif;font-size:13px;font-weight:500;color:var(--ink-faint);letter-spacing:0}
.price .fine{font-size:13.5px;color:var(--ink-faint);margin-bottom:22px;line-height:1.45}
.price ul{list-style:none;font-size:15px;color:var(--ink-soft);margin-bottom:28px}
.price li{padding:10px 0;border-top:1px solid var(--line)}
.price .btn{margin-top:auto;align-self:flex-start}
@media(max-width:900px){.prices{grid-template-columns:1fr}}

/* rate table */
.rates{width:100%;border-collapse:collapse;margin-top:42px;font-size:16px}
.rates th{text-align:left;font-family:"IBM Plex Mono",monospace;font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-soft);font-weight:500;padding:0 16px 14px 0;border-bottom:1px solid var(--ink)}
.rates td{padding:17px 16px 17px 0;border-bottom:1px solid var(--line);color:var(--ink-soft);vertical-align:top}
.rates td:first-child{color:var(--ink);font-family:Newsreader,Georgia,serif;font-size:18px}
.rates td:last-child{text-align:right;padding-right:0;white-space:nowrap;font-family:"IBM Plex Mono",monospace;font-size:14px;color:var(--ink)}
.rates th:last-child{text-align:right;padding-right:0}
.rates-note{margin-top:28px;font-size:15.5px;color:var(--ink-soft);max-width:42em;padding-left:22px;border-left:2px solid var(--accent);line-height:1.6}
@media(max-width:640px){.rates,.rates tbody,.rates tr,.rates td{display:block;width:100%}.rates thead{display:none}.rates tr{border-bottom:1px solid var(--line);padding:15px 0}.rates td{border:0;padding:2px 0}.rates td:last-child{text-align:left;margin-top:8px}}

/* faq */
.faq{margin-top:44px;border-top:1px solid var(--ink)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;padding:22px 0;font-family:Newsreader,Georgia,serif;font-size:20px;font-weight:500;list-style:none;display:flex;justify-content:space-between;gap:20px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent);font-size:22px;line-height:1;font-family:Inter,sans-serif}
.faq details[open] summary::after{content:"\2212"}
.faq p{padding:0 0 24px;color:var(--ink-soft);font-size:16.5px;max-width:42em}

/* about */
.about-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:66px;align-items:start}
@media(max-width:900px){.about-grid{grid-template-columns:1fr;gap:38px}}
.portrait{border:1px solid var(--line);filter:grayscale(1);width:100%;border-radius:2px;display:block}
.creds{margin-top:32px;border-top:1px solid var(--ink)}
.creds div{padding:14px 0;border-bottom:1px solid var(--line);color:var(--ink-soft);font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.09em;line-height:1.5}