@font-face{font-family:"Alice";src:url(assets/fonts/alice.woff2) format("woff2");font-display:swap}
@font-face{font-family:"Lato";src:url(assets/fonts/lato-400.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Lato";src:url(assets/fonts/lato-700.woff2) format("woff2");font-weight:700;font-display:swap}
:root{
  --blue:#137dc5;--blue-deep:#0f5f96;--blue-bright:#2199ea;--blue-light:#50aeee;--grey:#e6e6e6;--white:#fff;
  --ink:#10283d;--muted:#4a5d6e;
  --serif:"Alice",Georgia,serif;--sans:"Lato",system-ui,sans-serif;
  --wrap:1120px;--r:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
section[id]{scroll-margin-top:94px}
body{font-family:var(--sans);color:var(--ink);background:var(--white);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--blue)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:var(--serif);font-weight:400;line-height:1.15;color:var(--blue)}
h1{font-size:clamp(2.4rem,5.5vw,4.2rem)}
h2{font-size:clamp(1.9rem,3.6vw,2.7rem)}
h3{font-size:1.45rem}
.eyebrow{font-size:.78rem;letter-spacing:.22em;text-transform:uppercase;font-weight:700;color:var(--blue-deep)}
.rule{height:1px;background:var(--ink);opacity:.85;margin:18px 0 0}

/* Header */
header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--grey)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.nav img{height:42px;width:auto}
.nav ul{display:flex;gap:28px;list-style:none}
.nav a{color:var(--ink);text-decoration:none;font-size:.95rem;font-weight:700}
.nav a:hover{color:var(--blue)}
.menu-btn{display:none;background:none;border:1px solid var(--grey);border-radius:8px;padding:8px 12px;font:700 .9rem var(--sans);color:var(--ink);cursor:pointer}

/* Hero */
.hero{position:relative;overflow:hidden;padding:110px 0 120px}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero p.lead{font-size:1.2rem;color:var(--muted);max-width:34ch;margin:22px 0 34px}
.hero .slogan{font-family:var(--serif);color:var(--blue-bright);font-size:1.35rem;margin-top:14px}
.torus{display:none}
.hero-photo{align-self:stretch;display:flex;flex-direction:column;justify-content:center;min-width:0}
.hero-photo img{width:100%;height:460px;object-fit:cover;border-radius:180px 180px 12px 12px}
figcaption{font-size:.88rem;color:var(--blue-deep);line-height:1.5;padding-top:14px}
figcaption span{display:block;font-size:.75rem;color:var(--muted);margin-top:4px}
.project-imagery{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:42px}
.project-imagery figure{min-width:0}
.project-imagery img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r)}
.project-group{padding:8px 0 4px}
.project-group h3{font-size:1.8rem;margin-top:8px}
.project-group p:not(.eyebrow){color:var(--muted);max-width:66ch;margin-top:12px}
.water-group{margin-top:24px}
.torus ellipse{fill:none;stroke-width:1.1}
.btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 24px;border-radius:999px;font-weight:700;text-decoration:none;font-size:.98rem;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--blue);color:var(--white)}
.btn-primary:hover{background:var(--blue-deep)}
.btn-ghost{border:1.5px solid var(--blue);color:var(--blue)}
.btn-white{background:var(--white);color:var(--blue-deep)}

/* Aviation */
.aviation{background:var(--blue-deep);color:var(--white);padding:110px 0}
.aviation h2,.aviation .eyebrow{color:var(--white)}
.aviation .rule{background:var(--white);opacity:.5}
.av-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;margin-top:48px;align-items:start}
.av-grid p{color:#dcebf7;font-size:1.08rem}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.fact{border:1px solid rgba(255,255,255,.28);border-radius:var(--r);padding:22px}
.fact strong{display:block;font-family:var(--serif);font-weight:400;font-size:1.9rem;color:var(--white);line-height:1.1}
.fact span{font-size:.9rem;color:#cfe3f3}
.types{display:flex;gap:10px;flex-wrap:wrap;margin:26px 0 32px}
.chip{padding:7px 14px;border-radius:999px;background:rgba(255,255,255,.12);font-size:.88rem;font-weight:700}

/* Projects */
.projects{padding:110px 0;background:var(--white)}
.intro{max-width:60ch;color:var(--muted);font-size:1.1rem;margin-top:22px}
.timeline{margin-top:60px;display:grid;gap:22px;position:relative}
.proj{display:grid;grid-template-columns:70px 1fr auto;gap:28px;align-items:center;padding:30px 32px;border:1px solid var(--grey);border-radius:var(--r);background:var(--white);transition:border-color .2s,box-shadow .2s}
.proj:hover{border-color:var(--blue-light);box-shadow:0 10px 30px -18px rgba(15,95,150,.45)}
.num{font-family:var(--serif);font-size:2.2rem;color:var(--blue-light);line-height:1}
.proj h3{margin-bottom:4px}
.proj .role{font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;font-weight:700;color:var(--blue-deep);margin-bottom:8px}
.proj p{color:var(--muted);max-width:62ch}
.proj .link{white-space:nowrap}
.status{display:inline-block;padding:6px 12px;border-radius:999px;background:var(--grey);color:var(--ink);font-size:.82rem;font-weight:700}

/* About */
.about{background:#f4f8fb;padding:110px 0}
.about-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;margin-top:40px}
.about blockquote{font-family:var(--serif);font-size:1.7rem;color:var(--blue-deep);line-height:1.35}
.about p{color:var(--muted);margin-bottom:16px;font-size:1.06rem}

/* Contact */
.contact{padding:110px 0;text-align:center}
.contact img{height:70px;width:auto;margin:0 auto 26px}
.contact p{color:var(--muted);margin:14px auto 30px;max-width:46ch}
.contact .btns{justify-content:center}

footer{border-top:1px solid var(--grey);padding:28px 0;font-size:.9rem;color:var(--muted)}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
footer a{color:var(--muted);margin-left:18px}

/* Legal pages */
.legal{padding:80px 0 110px;max-width:760px}
.legal h1{font-size:2.6rem;margin-bottom:10px}
.legal h2{font-size:1.5rem;margin:36px 0 10px}
.legal p,.legal li{color:var(--muted);margin-bottom:10px}
.legal ul{padding-left:20px}
.legal a{overflow-wrap:anywhere}
.todo{background:#fff4cc;color:#5a4500;padding:1px 6px;border-radius:4px;font-weight:700}

:focus-visible{outline:3px solid var(--blue-bright);outline-offset:3px}

@media (max-width:860px){
  .hero{padding:60px 0 70px}
  .hero .wrap,.av-grid,.about-grid{grid-template-columns:1fr}
  .hero-photo img{height:260px;border-radius:14px}
  .project-imagery{grid-template-columns:1fr;gap:28px}
  .torus{max-width:260px;justify-self:center;order:-1}
  .nav ul{display:none;position:absolute;top:74px;left:0;right:0;background:var(--white);flex-direction:column;gap:0;border-bottom:1px solid var(--grey)}
  .nav ul.open{display:flex}
  .nav ul a{display:block;padding:16px 24px}
  .menu-btn{display:block}
  .nav img{height:34px}
  .proj{grid-template-columns:1fr;gap:12px;padding:24px}
  .aviation,.projects,.about,.contact{padding:72px 0}
}
@media (prefers-reduced-motion:no-preference){
  .torus g{transform-origin:220px 220px;animation:spin 90s linear infinite}
  @keyframes spin{to{transform:rotate(360deg)}}
}
@media (max-width:480px){.facts{grid-template-columns:1fr}.fact strong{font-size:1.6rem}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}}