:root {
  --navy: #061522;
  --blue: #087eaa;
  --sky: #65c3d8;
  --paper: #f0eee8;
  --ink: #0b1a24;
  --white: #f7f8f6;
  --pad: clamp(1.25rem, 4.5vw, 5.5rem);
  --display: "Manrope", sans-serif;
  --body: "DM Sans", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--navy); }
body { margin: 0; overflow-x: hidden; background: var(--navy); color: var(--white); font-family: var(--body); }
a { color: inherit; }
.skip-link { position: fixed; z-index: 200; top: -5rem; left: 1rem; background: white; color: black; padding: .8rem 1rem; }
.skip-link:focus { top: 1rem; }

.topbar { position: fixed; z-index: 100; inset: 0 0 auto; display: flex; align-items: center; justify-content: space-between; height: 5.2rem; padding: 0 var(--pad); color: white; transition: background-color .25s ease, box-shadow .25s ease, backdrop-filter .25s ease; }
.topbar.is-solid { background: rgba(6,21,34,.88); box-shadow: 0 1px 0 rgba(255,255,255,.12); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
.brand { display: flex; align-items: center; text-decoration: none; }
.brand img { display: block; width: clamp(10.5rem, 14vw, 13.5rem); height: auto; }
.topbar nav { display: flex; align-items: center; gap: clamp(1.2rem, 3vw, 2.8rem); }
.topbar nav a { text-decoration: none; text-transform: uppercase; font-size: .62rem; font-weight: 600; letter-spacing: .15em; }
.nav-contact { border-bottom: 1px solid currentColor; padding-bottom: .25rem; }

.film { position: relative; height: 100svh; overflow: hidden; background: #0a3b53; }
.film-media, .film-poster, .film-video, .film-shade { position: absolute; inset: 0; width: 100%; height: 100%; }
.film-poster, .film-video { object-fit: cover; }
.film-video { opacity: 0; }
.film-video-in { opacity: 1; }
.film-shade { background: linear-gradient(90deg, rgba(3,15,24,.66) 0%, rgba(3,15,24,.16) 48%, rgba(3,15,24,.02) 72%), linear-gradient(0deg, rgba(2,12,20,.34), transparent 40%); }
.film-step { position: absolute; z-index: 5; left: var(--pad); bottom: clamp(4.5rem, 10vh, 7.5rem); width: min(48rem, 86vw); visibility: hidden; opacity: 0; }
.film-step-hero { visibility: visible; opacity: 1; }
.kicker, .chapter-number, .section-label { margin: 0 0 1.3rem; text-transform: uppercase; font-size: .62rem; font-weight: 600; letter-spacing: .17em; }
.film-step h1, .film-step h2, .intro h2, .section-heading h2, .approach > h2, .contact > h2 { margin: 0; font-family: var(--display); font-weight: 600; letter-spacing: -.07em; line-height: .91; }
.film-step h1 { font-size: clamp(3.2rem, 6.7vw, 6.6rem); }
.film-step h1 span { color: var(--sky); }
.hero-note { margin: 1.5rem 0 0; font-size: clamp(.95rem, 1.5vw, 1.2rem); }
.film-step-detail { right: var(--pad); left: auto; width: min(32rem, 86vw); }
.film-step h2 { font-size: clamp(3.2rem, 6.7vw, 6.6rem); }
.film-step-detail > p:last-child, .film-step-system > p:last-child { max-width: 30rem; margin: 1.5rem 0 0; color: rgba(255,255,255,.82); font-size: clamp(.95rem, 1.3vw, 1.12rem); line-height: 1.55; }
.film-index { position: absolute; z-index: 6; right: var(--pad); bottom: 2rem; display: flex; align-items: center; gap: .8rem; font-size: .57rem; text-transform: uppercase; letter-spacing: .14em; }
.film-index-line { display: block; width: clamp(3rem, 8vw, 7rem); height: 1px; background: rgba(255,255,255,.35); }
.film-index-line i { display: block; width: 100%; height: 100%; background: white; transform: scaleX(0); transform-origin: left; }

.intro, .expertise, .approach, .contact { position: relative; z-index: 10; padding: clamp(6rem, 12vw, 11rem) var(--pad); }
.intro { background: var(--paper); color: var(--ink); }
.intro-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(18rem, .7fr); gap: clamp(3rem, 9vw, 9rem); align-items: end; }
.intro h2 { max-width: 66rem; font-size: clamp(3.1rem, 6.5vw, 7rem); }
.intro h2 span { color: var(--blue); }
.intro-copy p { margin: 0 0 1.4rem; font-size: clamp(1rem, 1.3vw, 1.2rem); line-height: 1.65; }

.expertise { background: #e5e2da; color: var(--ink); }
.section-heading { display: grid; grid-template-columns: .6fr 2fr; gap: 2rem; margin-bottom: clamp(4rem, 8vw, 7rem); }
.section-heading h2 { font-size: clamp(3rem, 6.2vw, 6.5rem); }
.expertise-list { border-top: 1px solid rgba(11,26,36,.35); }
.expertise-list article { display: grid; grid-template-columns: 4rem minmax(16rem, 1fr) minmax(18rem, .9fr); gap: 2rem; align-items: baseline; padding: 2rem 0; border-bottom: 1px solid rgba(11,26,36,.35); }
.expertise-list article > span, .approach-grid article > span { color: var(--blue); font-size: .64rem; font-weight: 600; }
.expertise-list h3, .approach-grid h3 { margin: 0; font: 600 clamp(1.3rem, 2vw, 2.1rem)/1.1 var(--display); letter-spacing: -.035em; }
.expertise-list p, .approach-grid p { margin: 0; color: rgba(11,26,36,.68); line-height: 1.55; }

.approach { background: var(--navy); }
.approach > h2 { max-width: 70rem; font-size: clamp(4rem, 9vw, 9.5rem); }
.approach-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: clamp(4rem, 9vw, 8rem); background: rgba(255,255,255,.2); border: 1px solid rgba(255,255,255,.2); }
.approach-grid article { min-height: 19rem; padding: clamp(1.5rem, 3vw, 3rem); background: var(--navy); }
.approach-grid h3 { margin: 4rem 0 1.2rem; }
.approach-grid p { color: rgba(255,255,255,.62); }

.contact { min-height: 100svh; display: flex; flex-direction: column; background: var(--paper); color: var(--ink); }
.contact > h2 { font-size: clamp(4.5rem, 11vw, 11rem); }
.contact > h2 span { color: var(--blue); }
.contact-actions { display: flex; flex-wrap: wrap; gap: 1rem 3rem; margin-top: clamp(3rem, 7vw, 6rem); }
.contact-actions a { text-decoration: none; border-bottom: 1px solid currentColor; padding-bottom: .35rem; font: 600 clamp(1.1rem, 2vw, 1.6rem)/1.3 var(--display); }
footer { display: grid; grid-template-columns: minmax(0, 1fr) minmax(20rem, 42rem) minmax(0, 1fr); align-items: center; gap: 1rem; margin-top: auto; padding-top: 2rem; border-top: 1px solid rgba(11,26,36,.25); text-transform: uppercase; font-size: .58rem; letter-spacing: .1em; }
.footer-origin { justify-self: center; text-align: center; line-height: 1.45; }
footer div { display: flex; justify-self: end; gap: 1.2rem; }

@media (max-width: 760px) {
  .topbar { height: 4.6rem; }
  .topbar nav a:not(.nav-contact) { display: none; }
  .film-shade { background: linear-gradient(0deg, rgba(3,15,24,.78), rgba(3,15,24,.05) 70%); }
  .film-step { bottom: 6.5rem; }
  .film-step h1 { font-size: clamp(3rem, 15vw, 5rem); }
  .film-step h2 { font-size: clamp(3rem, 15vw, 5rem); }
  .film-step-detail { right: auto; left: var(--pad); }
  .film-index-label { display: none; }
  .film-index { left: var(--pad); right: var(--pad); }
  .film-index-line { flex: 1; }
  .intro-grid, .section-heading { grid-template-columns: 1fr; }
  .expertise-list article { grid-template-columns: 2.5rem 1fr; gap: 1rem; }
  .expertise-list article p { grid-column: 2; }
  .approach-grid { grid-template-columns: 1fr; }
  .approach-grid article { min-height: 15rem; }
  .approach-grid h3 { margin-top: 2.5rem; }
  footer { grid-template-columns: 1fr auto; }
  .footer-origin { grid-column: 1 / -1; grid-row: 2; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .film { min-height: 100svh; }
  .film-video { display: none; }
  .film-step:not(.film-step-hero), .film-index { display: none; }
}