/* Shared navigation: the surface tone follows the section underneath. */
nav.site-nav{--nav-fg:#17191b;--nav-bg:rgba(245,240,235,.88);--nav-rule:rgba(23,25,27,.14);position:fixed;inset:0 0 auto;z-index:100;display:flex;align-items:center;justify-content:space-between;gap:24px;max-width:none;margin-inline:auto;padding:24px 36px;border:0;border-radius:0;background:transparent;color:var(--nav-fg);font-family:'Instrument Sans',system-ui,sans-serif;font-size:11px;font-weight:500;line-height:1.4;letter-spacing:.18em;text-transform:uppercase;transition:background .25s,color .25s,border-color .25s;box-sizing:border-box}
nav.site-nav[data-tone="dark"]{--nav-fg:#f5f0eb;--nav-bg:rgba(17,19,22,.88);--nav-rule:rgba(245,240,235,.18)}
.site-nav a{color:inherit;text-decoration:none;opacity:1;display:inline-flex;align-items:center;min-height:36px;transition:opacity .2s}
.site-nav a:hover{opacity:.6}
.site-nav .site-brand{font-size:13px;font-weight:600;letter-spacing:-.035em;white-space:nowrap}
.site-nav .site-links{display:flex;align-items:center;gap:44px}
.site-nav .site-social{display:flex;align-items:center;gap:18px;margin-left:8px}
.site-nav svg{display:block;width:18px;height:18px;flex-shrink:0}
.site-nav a:focus-visible,.site-nav button:focus-visible,.site-menu a:focus-visible{outline:2px solid #E8542F;outline-offset:5px}
.site-nav #menuButton{display:none;width:40px;height:40px;align-items:center;justify-content:center;background:transparent;border:1px solid var(--nav-rule);border-radius:50%;color:inherit;cursor:pointer}
.site-menu{position:fixed;inset:0;z-index:90;background:#F5F0EB;color:#17191b;padding:120px 24px 32px;display:flex;flex-direction:column;justify-content:space-between;visibility:hidden;opacity:0;transform:translateY(-16px);transition:opacity .25s,transform .25s,visibility .25s;font-family:'Instrument Sans',system-ui,sans-serif;box-sizing:border-box}
.site-menu.is-open{visibility:visible;opacity:1;transform:none}
.site-menu-links{display:flex;flex-direction:column}
.site-menu a{color:inherit;text-decoration:none}
.site-menu-links a{display:flex;align-items:center;justify-content:space-between;padding:22px 0;border-bottom:1px solid #cbc5bf;font-size:clamp(32px,8vw,54px);font-weight:500;letter-spacing:-.04em}
.site-menu-links svg{width:26px;height:26px}
.site-menu-meta{font-size:12px;line-height:1.7;letter-spacing:.08em;text-transform:uppercase}
@media(max-width:767px){nav.site-nav{inset:0 0 auto;padding:18px 20px;gap:12px}.site-nav .site-links{display:none}.site-nav #menuButton{display:flex}}
@media(prefers-reduced-motion:reduce){nav.site-nav,.site-menu{transition:none}}

nav.site-nav:before{content:'';position:absolute;inset:0;z-index:-1;background:linear-gradient(to bottom,var(--nav-bg) 0%,var(--nav-bg) 55%,transparent 100%);opacity:0;transition:opacity .25s;pointer-events:none}
nav.site-nav[data-scrolled="true"]:before,nav.site-nav:has(#menuButton[aria-expanded="true"]):before{opacity:1}
.site-nav .site-links>a{position:relative}
.site-nav .site-links>a:after{content:'';position:absolute;left:0;right:.18em;bottom:4px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .25s}
.site-nav .site-links>a:hover:after,.site-nav .site-links>a:focus-visible:after{transform:scaleX(1)}
/* A compact, quiet masthead keeps the canvas open. */
nav.site-nav{inset:18px 4% auto;padding:8px 18px;background:#efede9ed;color:#222320;border:1px solid #0000000a;border-radius:50px;backdrop-filter:blur(16px);font-size:10px;letter-spacing:.03em}
.site-nav .site-brand{font-size:17px;letter-spacing:-.05em;text-transform:none}.site-nav .site-links{gap:32px}.site-nav a{min-height:44px}.site-nav #menuButton{width:44px;height:44px}.site-nav .site-social{border-left:1px solid #c9cdc1;padding-left:20px}.site-menu{background:#efede9}
@media(max-width:767px){nav.site-nav{inset:14px 16px auto;padding:5px 10px 5px 18px}.site-nav .site-brand{font-size:16px}}

nav.site-nav:before{display:none}
/* Dark portfolio masthead; the approved case-study masthead is preserved. */
body:not([data-page=case-study]) nav.site-nav{inset:20px 28px auto;padding:10px 20px;max-width:1440px;border:1px solid #ffffff20;border-radius:100px;background:#20231dee;color:#edefe6;backdrop-filter:blur(20px);box-shadow:0 8px 32px #00000018;font-size:10px;letter-spacing:.05em}
body:not([data-page=case-study]) .site-nav .site-brand{font-size:16px;letter-spacing:-.05em}body:not([data-page=case-study]) .site-nav .site-social{border-color:#ffffff24;padding-left:22px;gap:16px}body:not([data-page=case-study]) .site-nav #menuButton{border-color:#ffffff30}body:not([data-page=case-study]) .site-menu{inset:8px;border-radius:30px;background:#efede9}
@media(max-width:767px){body:not([data-page=case-study]) nav.site-nav{inset:16px 16px auto;padding:8px 12px 8px 20px}body:not([data-page=case-study]) .site-nav .site-brand{font-size:15px}}
body:not([data-page=case-study]) nav.site-nav{background:#141414f2;color:#f5f5f5;border-color:#ffffff22}body:not([data-page=case-study]) .site-menu{background:#f4f4f4;color:#111}