:root {
  --ink: #1c211e;
  --ink-soft: #475048;
  --moss: #2f3b32;
  --moss-deep: #1d2721;
  --linen: #f5f1e8;
  --paper: #fcfaf5;
  --sand: #dfd5c2;
  --line: rgba(28, 33, 30, 0.18);
  --muted: #77776e;
  --accent: #a78d6b;
  --sans: "Arial Narrow", Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
  --shell: min(1240px, calc(100vw - 96px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--serif); }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }

.skip-link {
  position: fixed; left: 20px; top: -80px; z-index: 999; padding: 12px 16px;
  background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 12px;
}
.skip-link:focus { top: 20px; }
.shell { width: var(--shell); margin-inline: auto; }

.site-header {
  position: absolute; inset: 0 0 auto; z-index: 10; display: flex; align-items: flex-start;
  justify-content: space-between; width: var(--shell); margin-inline: auto; padding: 28px 0;
}
.site-header--page { position: relative; width: 100%; padding: 0; background: var(--paper); }
.site-header--page .header-inner { display: flex; align-items: flex-start; justify-content: space-between; width: var(--shell); margin-inline: auto; padding: 28px 0; }

.brand { display: inline-grid; grid-template-columns: max-content; color: var(--ink); font-family: Georgia, "Times New Roman", serif; line-height: 1; }
.site-header--overlay .brand { color: var(--paper); }
.brand__name { font-size: 22px; font-weight: 400; letter-spacing: -1.3px; }
.brand__descriptor { width: 100%; margin-top: 5px; font-family: inherit; font-size: 7.3px; font-weight: 400; letter-spacing: .1px; text-align: justify; text-align-last: justify; white-space: nowrap; }
.site-nav { display: flex; align-items: center; gap: 32px; padding-top: 6px; color: var(--ink); font-family: var(--sans); font-size: 11px; font-weight: 700; letter-spacing: .9px; text-transform: uppercase; }
.site-header--overlay .site-nav { color: var(--paper); }
.site-nav a, .footer-nav a { transition: opacity .2s ease; }
.site-nav a:hover, .footer-nav a:hover { opacity: .56; }
.menu-toggle { display: none; }

.hero { position: relative; display: flex; min-height: max(650px, 100svh); overflow: hidden; color: var(--paper); }
.hero__image { position: absolute; inset: 0; background: url("bosphorus-hero.png") center center / cover no-repeat; transform: scale(1.01); }
.hero__scrim { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(18,28,22,.48), rgba(18,28,22,.07) 58%, rgba(18,28,22,.24)), linear-gradient(0deg, rgba(18,28,22,.42), transparent 44%); }
.hero__content { position: relative; align-self: flex-end; padding-bottom: 72px; }
.hero h1 { max-width: 1120px; margin: 15px 0 25px; font-size: clamp(52px, 6.3vw, 86px); font-weight: 400; letter-spacing: -.075em; line-height: .91; }
.hero__location { position: absolute; right: max(48px, calc((100vw - 1240px) / 2)); bottom: 34px; margin: 0; font-family: var(--sans); font-size: 9px; font-weight: 700; letter-spacing: 1.55px; opacity: .87; }

.eyebrow { margin: 0; color: var(--ink-soft); font-family: var(--sans); font-size: 10px; font-weight: 700; letter-spacing: 1.3px; line-height: 1.3; text-transform: uppercase; }
.eyebrow--light { color: var(--linen); }
.text-link { display: inline-flex; gap: 13px; align-items: center; border-bottom: 1px solid currentColor; padding-bottom: 6px; font-family: var(--sans); font-size: 10px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }
.text-link span { font-size: 15px; line-height: 0; }
.text-link--light { color: var(--paper); }

.section { padding: clamp(104px, 13vw, 190px) 0; }
.section-intro { margin-bottom: clamp(56px, 7vw, 100px); }
.section-intro--split { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(230px, .55fr); align-items: end; gap: 64px; }
.section h2, .contact-callout h2 { max-width: 780px; margin: 16px 0 0; font-size: clamp(41px, 5.5vw, 78px); font-weight: 400; letter-spacing: -.065em; line-height: .98; }
.section-lead { max-width: 310px; margin: 0 0 6px; color: var(--ink-soft); font-size: 19px; line-height: 1.45; }
.section-lead--wide { max-width: 680px; margin: 29px 0 0; font-size: clamp(19px, 2.1vw, 26px); line-height: 1.38; }

.what-we-do { background: var(--linen); }
.what-we-do__intro { margin-bottom: clamp(52px, 7vw, 88px); }
.what-we-do__intro h2 { max-width: 900px; }
.business-lines { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.business-line { position: relative; min-height: 360px; padding: 26px 42px 35px 0; }
.business-line + .business-line { border-left: 1px solid var(--line); padding-left: 42px; }
.business-line__number { margin: 0; color: var(--accent); font-family: var(--sans); font-size: 10px; font-weight: 700; letter-spacing: 1px; }
.business-line__label { margin: 26px 0 7px; font-family: var(--sans); font-size: 11px; font-weight: 700; letter-spacing: 1.3px; text-transform: uppercase; }
.business-line h3 { max-width: 500px; margin: 0; font-size: clamp(35px, 4.2vw, 58px); font-weight: 400; letter-spacing: -.065em; line-height: .96; }
.business-line > p:last-child { max-width: 450px; margin: 29px 0 0; color: var(--ink-soft); font-size: 17px; line-height: 1.48; }

.track-record { background: var(--paper); }
.track-record__intro { margin-bottom: clamp(48px, 6vw, 82px); }
.track-record__intro h2, .sectors .section-intro h2 { margin-top: 0; }
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.metric { display: flex; min-height: 208px; flex-direction: column-reverse; justify-content: space-between; gap: 25px; padding: 25px 22px 23px 0; }
.metric:not(:first-child) { border-left: 1px solid var(--line); padding-left: 24px; }
.metric dt { color: var(--ink-soft); font-family: var(--sans); font-size: 10px; font-weight: 700; letter-spacing: 1.15px; text-transform: uppercase; }
.metric dd { margin: 0; font-size: clamp(39px, 4.25vw, 63px); letter-spacing: -.075em; line-height: .85; white-space: nowrap; }
.metric dd span { color: var(--accent); }

.sectors { background: var(--linen); }
.sector-groups { border-top: 1px solid var(--line); }
.sector-group { display: grid; grid-template-columns: minmax(260px, .74fr) minmax(0, 1.26fr); gap: clamp(44px, 7vw, 120px); padding: 42px 0 56px; border-bottom: 1px solid var(--line); }
.sector-group__heading { display: flex; gap: 24px; align-items: flex-start; }
.sector-group__heading > span { padding-top: 5px; color: var(--accent); font-family: var(--sans); font-size: 10px; font-weight: 700; letter-spacing: 1px; }
.sector-group h3 { margin: 0; font-size: clamp(36px, 4.3vw, 60px); font-weight: 400; letter-spacing: -.07em; line-height: .95; text-transform: uppercase; }
.sector-group h3 i { color: var(--accent); font-style: normal; }
.sector-list { display: grid; gap: 0; }
.sector-item { display: grid; grid-template-columns: minmax(190px, .65fr) 1fr; gap: 30px; padding: 17px 0 18px; border-top: 1px solid var(--line); }
.sector-item:first-child { border-top: 0; padding-top: 5px; }
.sector-item h4 { margin: 0; font-size: 19px; font-weight: 400; letter-spacing: -.025em; line-height: 1.15; text-transform: uppercase; }
.sector-item p { max-width: 355px; margin: 0; color: var(--ink-soft); font-size: 15px; line-height: 1.42; }

.approach { padding-bottom: clamp(104px, 13vw, 190px); }
.approach__grid { display: grid; grid-template-columns: minmax(280px, .88fr) minmax(0, 1fr); align-items: center; gap: clamp(56px, 10vw, 170px); }
.approach__image { min-height: 520px; background: linear-gradient(0deg, rgba(32,40,32,.13), rgba(32,40,32,.13)), url("bosphorus-hero.png") 77% center / cover no-repeat; }
.approach__copy h2 { max-width: 550px; }
.approach__placeholder { max-width: 420px; margin: 33px 0 30px; color: var(--ink-soft); font-size: 22px; line-height: 1.38; }

.contact-callout { padding: clamp(92px, 11vw, 150px) 0; background: var(--moss); color: var(--linen); }
.contact-callout__inner { display: flex; align-items: flex-end; justify-content: space-between; gap: 48px; }
.contact-callout h2 { max-width: 650px; }
.contact-callout__copy { max-width: 600px; margin: 28px 0 0; color: rgba(245,241,232,.8); font-size: 19px; line-height: 1.45; }
.contact-callout__action { display: grid; justify-items: start; gap: 30px; }
.contact-callout address { display: grid; gap: 5px; font-family: var(--sans); font-size: 13px; font-style: normal; letter-spacing: .2px; line-height: 1.4; }
.contact-callout address strong { margin-bottom: 5px; font-weight: 700; }
.contact-callout address a { width: max-content; border-bottom: 1px solid rgba(245,241,232,.45); }
.button { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 25px; padding: 17px 22px; border: 1px solid transparent; font-family: var(--sans); font-size: 10px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; transition: color .2s ease, background .2s ease; }
.button span { font-size: 16px; }
.button--light { background: var(--linen); color: var(--moss-deep); }
.button--light:hover { background: transparent; border-color: var(--linen); color: var(--linen); }

.site-footer { padding: 39px 0 20px; background: var(--moss-deep); color: var(--linen); }
.site-footer__top { display: flex; justify-content: space-between; gap: 48px; padding-bottom: 55px; }
.brand--footer { color: var(--linen); }
.footer-nav { display: grid; grid-template-columns: repeat(2, minmax(120px, 1fr)); column-gap: 62px; row-gap: 12px; font-family: var(--sans); font-size: 10px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }
.site-footer__bottom { display: flex; justify-content: space-between; border-top: 1px solid rgba(245,241,232,.22); padding-top: 16px; color: rgba(245,241,232,.66); font-family: var(--sans); font-size: 9px; font-weight: 700; letter-spacing: .86px; }

/* Shared structural pages */
.page-hero { padding: clamp(110px, 14vw, 185px) 0 clamp(84px, 10vw, 132px); background: var(--linen); }
.page-hero__inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(240px, .5fr); align-items: end; gap: 64px; }
.page-hero h1 { margin: 17px 0 0; font-size: clamp(56px, 8vw, 118px); font-weight: 400; letter-spacing: -.085em; line-height: .85; }
.page-hero p { max-width: 320px; margin: 0; color: var(--ink-soft); font-size: 19px; line-height: 1.45; }
.page-content { min-height: 43vh; padding: clamp(80px, 10vw, 145px) 0; }
.page-content--moss { background: var(--moss); color: var(--linen); }
.structural-note { display: flex; align-items: baseline; gap: 30px; max-width: 680px; border-top: 1px solid var(--line); padding-top: 20px; color: var(--ink-soft); font-size: 19px; line-height: 1.45; }
.page-content--moss .structural-note { border-color: rgba(245,241,232,.25); color: rgba(245,241,232,.78); }
.structural-note span { flex: 0 0 auto; color: var(--accent); font-family: var(--sans); font-size: 10px; font-weight: 700; letter-spacing: 1px; }
.page-metrics { display: grid; grid-template-columns: repeat(2, 1fr); max-width: 900px; border-top: 1px solid rgba(245,241,232,.25); }
.page-metrics .metric { min-height: 218px; padding-top: 27px; }
.page-metrics .metric:nth-child(3) { border-left: none; }
.page-metrics .metric:nth-child(n+3) { border-top: 1px solid rgba(245,241,232,.25); }
.page-metrics .metric dt { color: rgba(245,241,232,.72); }
.page-metrics .metric dd { color: var(--linen); }
.transaction-space { margin-top: clamp(96px, 13vw, 170px); border-top: 1px solid rgba(245,241,232,.25); padding-top: 19px; }
.transaction-space h2 { margin: 0; font-size: clamp(35px, 4vw, 55px); font-weight: 400; letter-spacing: -.06em; }
.transaction-space p { max-width: 410px; margin: 14px 0 0; color: rgba(245,241,232,.72); font-size: 17px; line-height: 1.42; }
.about-pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 70px; border-top: 1px solid var(--line); }
.about-pillar { min-height: 250px; padding: 24px; border-left: 1px solid var(--line); }
.about-pillar:first-child { border-left: 0; padding-left: 0; }
.about-pillar span { color: var(--accent); font-family: var(--sans); font-size: 10px; font-weight: 700; letter-spacing: 1px; }
.about-pillar h2 { margin: 24px 0 0; font-size: clamp(27px, 3vw, 44px); font-weight: 400; letter-spacing: -.055em; }
.about-career { margin-top: 30px; border-top: 1px solid var(--line); padding-top: 22px; }
.about-career h2 { margin: 0; font-size: clamp(35px, 4vw, 55px); font-weight: 400; letter-spacing: -.06em; }
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(45px, 11vw, 180px); border-top: 1px solid var(--line); padding-top: 24px; }
.contact-layout h2 { margin: 0; font-size: clamp(38px, 4vw, 56px); font-weight: 400; letter-spacing: -.06em; }
.contact-layout p { max-width: 385px; margin: 13px 0 0; color: var(--ink-soft); font-size: 18px; line-height: 1.45; }
.contact-details { align-self: end; }
.contact-details h3 { margin: 0 0 17px; font-family: var(--sans); font-size: 10px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }
.contact-details a { border-bottom: 1px solid var(--ink); font-size: 22px; }

@media (max-width: 800px) {
  :root { --shell: min(100% - 44px, 1240px); }
  .site-header { align-items: flex-start; padding-top: 22px; }
  .site-header--page .header-inner { padding: 22px 0; }
  .site-nav { position: absolute; top: 73px; right: 0; display: none; min-width: 190px; flex-direction: column; align-items: flex-start; gap: 17px; padding: 20px; background: var(--paper); color: var(--ink) !important; box-shadow: 0 12px 35px rgba(25,30,25,.18); }
  .site-nav.is-open { display: flex; }
  .menu-toggle { display: grid; width: 30px; gap: 6px; border: 0; padding: 8px 0; background: transparent; cursor: pointer; }
  .menu-toggle span { display: block; height: 1px; width: 25px; background: currentColor; transition: transform .2s ease; }
  .site-header--overlay .menu-toggle { color: var(--paper); }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .hero { min-height: 690px; }
  .hero__content { padding-bottom: 55px; }
  .hero h1 { max-width: 100%; font-size: clamp(42px, 7vw, 58px); }
  .hero__location { display: none; }
  .section-intro--split, .page-hero__inner { grid-template-columns: 1fr; gap: 27px; }
  .section-lead { margin: 0; }
  .section-lead--wide { margin-top: 25px; }
  .business-lines { grid-template-columns: 1fr; }
  .business-line { min-height: 0; padding: 23px 0 40px; }
  .business-line + .business-line { border-top: 1px solid var(--line); border-left: 0; padding: 23px 0 40px; }
  .business-line__label { margin-top: 22px; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metric { min-height: 175px; padding: 20px 15px 20px 0; }
  .metric:nth-child(3) { border-left: none; border-top: 1px solid var(--line); }
  .metric:nth-child(4) { border-top: 1px solid var(--line); }
  .metric:nth-child(even) { padding-left: 16px; }
  .metric dd { font-size: clamp(37px, 11vw, 58px); }
  .sector-group { grid-template-columns: 1fr; gap: 36px; }
  .sector-item { grid-template-columns: 1fr; gap: 9px; padding: 18px 0; }
  .sector-item:first-child { padding-top: 0; }
  .approach__grid { grid-template-columns: 1fr; gap: 45px; }
  .approach__image { min-height: 400px; }
  .contact-callout__inner, .site-footer__top, .site-footer__bottom { flex-direction: column; align-items: flex-start; }
  .contact-callout__action { gap: 25px; }
  .site-footer__bottom { gap: 6px; }
  .footer-nav { grid-template-columns: 1fr 1fr; gap: 14px 40px; }
  .page-metrics { grid-template-columns: 1fr; }
  .page-metrics .metric { border-left: none; border-top: 1px solid rgba(245,241,232,.25); }
  .page-metrics .metric:first-child { border-top: none; }
  .about-pillars { grid-template-columns: 1fr; margin-top: 48px; }
  .about-pillar, .about-pillar:first-child { min-height: 175px; border-top: 1px solid var(--line); border-left: none; padding: 22px 0; }
  .about-pillar:first-child { border-top: none; }
  .about-pillar h2 { margin-top: 0; }
  .contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 420px) {
  :root { --shell: min(100% - 34px, 1240px); }
  .brand__name { font-size: 20px; }
  .hero { min-height: 620px; }
  .section { padding: 86px 0; }
  .sector-group h3 { font-size: 37px; }
}