/* GasTRPartners — static draft stylesheet */
:root{
  --bg:#08111e;
  --bg-2:#0b1626;
  --bg-3:#0f1c2f;
  --line:rgba(159,179,200,.14);
  --line-strong:rgba(159,179,200,.26);
  --text:#e6ebf1;
  --muted:#9aa9ba;
  --faint:#6c7d91;
  --steel:#9fb3c8;
  --gold:#c2a878;
  --gold-soft:#d9c7a0;
  --serif:"Cormorant Garamond", Georgia, "Times New Roman", serif;
  --sans:"Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --container:1180px;
  --header-h:76px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:var(--header-h);-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--sans);font-weight:300;font-size:17px;line-height:1.7;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3{margin:0;font-weight:400}
p{margin:0 0 1.1em}
ul,ol,dl{margin:0;padding:0;list-style:none}
::selection{background:rgba(194,168,120,.35);color:#fff}
:focus-visible{outline:1px solid var(--gold);outline-offset:4px;border-radius:2px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.skip-link{position:absolute;left:16px;top:-60px;z-index:100;background:var(--gold);color:#0b1524;padding:10px 16px;font-size:14px;font-weight:500;transition:top .2s}
.skip-link:focus{top:16px}

/* ---------- Header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:50;height:var(--header-h);
  transition:background .4s var(--ease),border-color .4s var(--ease),backdrop-filter .4s;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(8,17,30,.78);
  -webkit-backdrop-filter:saturate(140%) blur(14px);backdrop-filter:saturate(140%) blur(14px);
  border-bottom-color:var(--line);
}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:12px}
.brand-mark{
  display:inline-grid;place-items:center;width:34px;height:34px;
  border:1px solid rgba(194,168,120,.55);border-radius:7px;
  font-family:var(--serif);font-size:15px;letter-spacing:.06em;color:var(--gold-soft);
}
.brand-name{font-family:var(--serif);font-size:22px;letter-spacing:.02em;color:var(--text)}
.brand-tr{color:var(--gold-soft);font-weight:500;letter-spacing:.03em}
.brand.small .brand-mark{width:28px;height:28px;font-size:13px}
.brand.small .brand-name{font-size:19px}

.main-nav{display:flex;gap:38px;margin-left:auto}
.main-nav a{
  position:relative;font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);
  font-weight:400;padding:6px 0;transition:color .3s;
}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--gold);transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease)}
.main-nav a:hover,.main-nav a.active{color:var(--text)}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}

.header-tools{display:flex;align-items:center;gap:14px}
.lang-switch{display:flex;border:1px solid var(--line-strong);border-radius:999px;padding:3px}
.lang-switch button{
  appearance:none;border:0;background:transparent;color:var(--faint);cursor:pointer;
  font:500 11px/1 var(--sans);letter-spacing:.14em;padding:7px 10px;border-radius:999px;transition:color .25s,background .25s;
}
.lang-switch button:hover{color:var(--text)}
.lang-switch button[aria-pressed="true"]{background:rgba(194,168,120,.14);color:var(--gold-soft)}

.nav-toggle{display:none;appearance:none;background:transparent;border:1px solid var(--line-strong);border-radius:50%;width:40px;height:40px;cursor:pointer;position:relative}
.nav-toggle span{position:absolute;left:12px;right:12px;height:1px;background:var(--text);transition:transform .3s var(--ease),top .3s}
.nav-toggle span:first-child{top:16px}.nav-toggle span:last-child{top:23px}
.nav-toggle[aria-expanded="true"] span:first-child{top:19.5px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:last-child{top:19.5px;transform:rotate(-45deg)}

/* ---------- Typography helpers ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:14px;margin:0 0 22px;
  font-size:12px;font-weight:500;letter-spacing:.24em;text-transform:uppercase;color:var(--gold);
}
.eyebrow::before{content:"";width:28px;height:1px;background:currentColor;opacity:.7}
h2{font-family:var(--serif);font-size:clamp(34px,4.2vw,54px);line-height:1.1;letter-spacing:-.005em;color:var(--text)}
h3{font-family:var(--serif);font-size:26px;line-height:1.2}
.section-intro{color:var(--muted);max-width:560px;margin-top:22px}
.lead{font-size:20px;color:var(--text);line-height:1.65}
.prose p{color:var(--muted)}
.prose .lead{color:var(--text)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:0 26px;border-radius:2px;
  font:500 12.5px/1 var(--sans);letter-spacing:.18em;text-transform:uppercase;
  transition:background .35s var(--ease),color .35s,border-color .35s,transform .35s var(--ease);
}
.btn-primary{background:var(--gold);color:#0b1524;border:1px solid var(--gold)}
.btn-primary:hover{background:var(--gold-soft);border-color:var(--gold-soft)}
.btn-ghost{border:1px solid var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-soft)}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:100vh;min-height:100svh;display:flex;align-items:center;overflow:hidden;
  background:
    radial-gradient(1200px 600px at 75% 18%, rgba(70,98,132,.28), transparent 60%),
    radial-gradient(900px 500px at 10% 0%, rgba(194,168,120,.07), transparent 60%),
    linear-gradient(180deg,#0b1729 0%, #08111e 62%, #060d18 100%);
}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.hero-glow{position:absolute;left:50%;top:62%;width:120%;height:40%;transform:translate(-50%,-50%);
  background:radial-gradient(closest-side, rgba(194,168,120,.10), transparent 70%);filter:blur(10px)}
.hero-art{position:absolute;inset:0;width:100%;height:100%}
.hero-art .wave{stroke-width:1.2;animation:drift 22s linear infinite}
.hero-art .w2{animation-duration:28s;animation-direction:reverse}
.hero-art .w3{animation-duration:34s}
.hero-art .w4{animation-duration:42s;animation-direction:reverse}
@keyframes drift{from{transform:translateX(0)}to{transform:translateX(-560px)}}
.hero{--ship-w:min(46vw,660px);--ship-h:calc(var(--ship-w) * .2308);--sea:26%}
.horizon{position:absolute;left:0;right:0;bottom:var(--sea);height:1px;
  background:linear-gradient(90deg,transparent,rgba(194,168,120,.5) 50%,transparent)}
.hero-ship{position:absolute;right:max(32px,calc((100vw - var(--container))/2 + 32px));
  bottom:calc(var(--sea) - var(--ship-h) * .347);width:var(--ship-w);height:var(--ship-h);opacity:.95}
.hero-ship .ship{animation:bob 9s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(2.5px)}}

.hero-content{position:relative;z-index:2;padding-top:calc(var(--header-h) + 40px);padding-bottom:180px}
.hero-title{
  font-family:var(--serif);font-weight:400;font-size:clamp(46px,7vw,96px);line-height:1.02;letter-spacing:-.015em;
  max-width:18ch;margin-bottom:30px;
}
.hero-title em{font-style:italic;color:var(--gold-soft)}
.hero-sub{max-width:560px;font-size:19px;color:var(--muted);margin-bottom:42px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.scroll-cue{position:absolute;left:50%;bottom:34px;transform:translateX(-50%);z-index:2;width:22px;height:36px;border:1px solid var(--line-strong);border-radius:12px}
.scroll-cue span{position:absolute;left:50%;top:8px;width:2px;height:6px;margin-left:-1px;background:var(--gold);border-radius:2px;animation:cue 2.4s var(--ease) infinite}
@keyframes cue{0%{opacity:0;transform:translateY(0)}30%{opacity:1}100%{opacity:0;transform:translateY(12px)}}

/* ---------- Sections ---------- */
.section{position:relative;padding:150px 0}
.section + .section{border-top:1px solid var(--line)}
.grid-2{display:grid;grid-template-columns:5fr 7fr;gap:80px;align-items:start}
.section-head.center{text-align:center;display:flex;flex-direction:column;align-items:center}
.section-head.center .section-intro{margin-left:auto;margin-right:auto}

.about{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-2) 100%)}
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:48px;padding-top:36px;border-top:1px solid var(--line)}
.pillars dt{font-family:var(--serif);font-size:22px;color:var(--text);margin-bottom:8px}
.pillars dd{margin:0;font-size:14.5px;color:var(--faint);line-height:1.6}

.focus{background:var(--bg-2)}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;margin-top:80px;background:var(--line);border:1px solid var(--line)}
.card{
  position:relative;background:var(--bg-2);padding:52px 48px 46px;
  transition:background .5s var(--ease);
}
.card::before{content:"";position:absolute;left:0;top:0;height:1px;width:100%;background:linear-gradient(90deg,var(--gold),transparent);transform:scaleX(0);transform-origin:left;transition:transform .7s var(--ease)}
.card:hover{background:var(--bg-3)}
.card:hover::before{transform:scaleX(1)}
.card-index{display:block;font-size:12px;letter-spacing:.2em;color:var(--gold);margin-bottom:26px;font-weight:500}
.card h3{margin-bottom:16px}
.card p{color:var(--muted);font-size:16px;margin-bottom:26px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tags li{font-size:12px;letter-spacing:.06em;color:var(--steel);border:1px solid var(--line-strong);padding:6px 12px;border-radius:999px}

.chain{margin-top:90px;text-align:center}
.chain-title{font-size:22px;color:var(--muted);font-style:italic;margin-bottom:36px}
.chain-steps{display:flex;justify-content:space-between;gap:0;counter-reset:step;position:relative}
.chain-steps::before{content:"";position:absolute;left:8%;right:8%;top:6px;height:1px;background:linear-gradient(90deg,transparent,var(--line-strong) 10%,var(--line-strong) 90%,transparent)}
.chain-steps li{flex:1;position:relative;padding-top:30px;font-size:13px;letter-spacing:.08em;color:var(--steel);text-transform:uppercase;line-height:1.5;padding-left:6px;padding-right:6px}
.chain-steps li::before{content:"";position:absolute;left:50%;top:0;width:13px;height:13px;margin-left:-6.5px;border-radius:50%;background:var(--bg-2);border:1px solid var(--gold)}

.approach{background:linear-gradient(180deg,var(--bg-2) 0%,var(--bg) 100%)}
.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:56px;margin-top:80px}
.principle{padding-top:34px;border-top:1px solid var(--line-strong)}
.numeral{display:block;font-family:var(--serif);font-size:20px;color:var(--gold);margin-bottom:18px;letter-spacing:.08em}
.principle h3{font-size:30px;margin-bottom:16px}
.principle p{color:var(--muted);font-size:16px}

.contact{background:
  radial-gradient(800px 400px at 85% 100%, rgba(70,98,132,.18), transparent 60%),
  var(--bg)}
.contact-card{border:1px solid var(--line-strong);padding:52px;background:linear-gradient(180deg,rgba(15,28,47,.6),rgba(11,22,38,.3))}
.contact-name{font-family:var(--serif);font-size:32px;line-height:1.2;margin:0 0 4px}
.contact-company{color:var(--faint);font-size:13px;letter-spacing:.2em;text-transform:uppercase;margin-bottom:36px}
.contact-list li{display:grid;grid-template-columns:130px 1fr;gap:16px;padding:18px 0;border-top:1px solid var(--line);align-items:baseline}
.contact-list li:last-child{border-bottom:1px solid var(--line);margin-bottom:38px}
.contact-list .label{font-size:11.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--faint)}
.contact-list a{color:var(--text);transition:color .3s;word-break:break-word}
.contact-list a:hover{color:var(--gold-soft)}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);padding:46px 0;background:#060d18}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.footer-note,.copyright{margin:0;font-size:13px;color:var(--faint);letter-spacing:.03em}

/* ---------- Reveal animation ---------- */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.js .reveal.in{opacity:1;transform:none}
.js .hero .reveal:nth-child(2){transition-delay:.1s}
.js .hero .reveal:nth-child(3){transition-delay:.2s}
.js .hero .reveal:nth-child(4){transition-delay:.3s}
.js .cards .card:nth-child(2),.js .principles .principle:nth-child(2){transition-delay:.1s}
.js .cards .card:nth-child(3),.js .principles .principle:nth-child(3){transition-delay:.2s}
.js .cards .card:nth-child(4){transition-delay:.3s}
body.lang-fade main,body.lang-fade footer{opacity:.35}
main,footer{transition:opacity .25s ease}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .grid-2{grid-template-columns:1fr;gap:40px}
  .principles{gap:40px}
}
@media (max-width:860px){
  :root{--header-h:68px}
  body{font-size:16px}
  .container{padding:0 22px}
  .nav-toggle{display:inline-block}
  .main-nav{
    position:fixed;top:var(--header-h);left:0;right:0;flex-direction:column;gap:0;margin:0;
    background:rgba(8,17,30,.97);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);padding:8px 22px 18px;
    opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .3s,transform .3s var(--ease),visibility .3s;
  }
  .main-nav.open{opacity:1;visibility:visible;transform:none}
  .main-nav a{padding:16px 0;border-bottom:1px solid var(--line);font-size:13px}
  .main-nav a:last-child{border-bottom:0}
  .main-nav a::after{display:none}
  .site-header.menu-open{background:rgba(8,17,30,.97)}
  .section{padding:100px 0}
  .cards{grid-template-columns:1fr;margin-top:56px}
  .card{padding:40px 28px}
  .principles{grid-template-columns:1fr;margin-top:56px}
  .pillars{grid-template-columns:1fr;gap:22px}
  .chain{margin-top:64px;text-align:left}
  .chain-title{text-align:left}
  .chain-steps{flex-direction:column;gap:22px;padding-left:32px}
  .chain-steps::before{left:6px;right:auto;top:6px;bottom:6px;width:1px;height:auto;background:var(--line-strong)}
  .chain-steps li{padding:0 0 0 0;text-align:left}
  .chain-steps li::before{left:-32px;top:4px;margin-left:0}
  .hero{--ship-w:86vw;--sea:15%}
  .hero-ship{right:4vw}
  .scroll-cue{display:none}
  .hero-content{padding-top:calc(var(--header-h) + 28px);padding-bottom:calc(15% + 160px)}
  .hero-sub{font-size:17px}
  .contact-card{padding:34px 24px}
  .contact-list li{grid-template-columns:1fr;gap:4px}
  .footer-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:420px){
  .brand-name{font-size:19px}
  .lang-switch button{padding:7px 8px}
  .header-tools{gap:10px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none !important;transition:none !important}
  .js .reveal{opacity:1;transform:none}
}