:root {
  color-scheme: dark;
  --ink: #0a0b0d;
  --panel: #111317;
  --line: rgba(255,255,255,.13);
  --text: #f2efe8;
  --muted: #a5a6a8;
  --accent: #d84934;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--ink); }
body { margin: 0; background: var(--ink); color: var(--text); font-family: "Manrope", sans-serif; font-size: 16px; line-height: 1.6; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.site-header {
  position: fixed; inset: 0 0 auto; z-index: 50; height: 82px; padding: 0 clamp(22px, 4vw, 64px);
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 36px;
  border-bottom: 1px solid transparent; transition: background .3s ease, border-color .3s ease, height .3s ease;
}
.site-header.scrolled { height: 66px; background: rgba(10,11,13,.9); border-color: var(--line); backdrop-filter: blur(18px); }
.brand { font-family: "Space Grotesk", sans-serif; font-size: 1.08rem; font-weight: 600; letter-spacing: .18em; }
.brand span { color: var(--accent); }
nav { display: flex; gap: 32px; color: #d0d0d0; font-size: .82rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; }
nav a, .nav-cta { transition: color .2s ease; }
nav a:hover, .nav-cta:hover { color: var(--accent); }
.nav-cta { justify-self: end; font-size: .78rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; border-bottom: 1px solid rgba(255,255,255,.6); padding-bottom: 5px; }

.hero { min-height: 100svh; position: relative; display: flex; align-items: center; overflow: hidden; padding: 140px clamp(22px, 6vw, 96px) 150px; }
.hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 45%; transform: scale(1.015); animation: settle 1.4s cubic-bezier(.2,.7,.2,1) forwards; }
@keyframes settle { to { transform: scale(1); } }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(5,6,8,.92) 0%, rgba(5,6,8,.66) 40%, rgba(5,6,8,.08) 72%), linear-gradient(0deg, rgba(5,6,8,.9) 0%, transparent 42%); }
.hero-content { position: relative; z-index: 2; width: min(640px, 50vw); margin: 0; }
.eyebrow, .section-kicker { color: var(--accent); font-size: .76rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
h1, h2, h3 { font-family: "Space Grotesk", sans-serif; letter-spacing: -.04em; margin: 0; }
h1 { font-size: clamp(2.5rem, 3.4vw, 3.6rem); line-height: 1.08; max-width: 640px; }
.hero-copy { max-width: 510px; margin: 24px 0 0; color: #d7d5d1; font-size: 1.05rem; }
.hero-actions { display: flex; gap: 14px; margin-top: 38px; flex-wrap: wrap; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 0 22px; border: 1px solid var(--line); font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--accent); border-color: var(--accent); color: white; }
.button.primary:hover { background: #ee523b; }
.button.ghost { background: rgba(10,11,13,.34); backdrop-filter: blur(12px); }
.button.ghost:hover { border-color: rgba(255,255,255,.55); }
.hero-index { position: absolute; z-index: 3; bottom: 0; right: 0; display: grid; grid-template-columns: repeat(3, minmax(170px, 1fr)); background: rgba(10,11,13,.87); backdrop-filter: blur(14px); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.hero-index div { padding: 21px 26px; display: grid; gap: 4px; border-right: 1px solid var(--line); }
.hero-index span { color: var(--accent); font-size: .7rem; letter-spacing: .15em; }
.hero-index strong { font-size: .79rem; letter-spacing: .04em; text-transform: uppercase; }

.section { max-width: var(--max); margin: 0 auto; padding: 130px clamp(22px, 4vw, 48px); opacity: .22; transform: translateY(20px); transition: opacity .7s ease, transform .7s ease; }
.section.visible { opacity: 1; transform: none; }
.manifesto { display: grid; grid-template-columns: .55fr 1.45fr; gap: 70px 90px; }
.manifesto-copy h2, .tech-intro h2, .partners-heading h2, .contact h2 { font-size: clamp(2.6rem, 5vw, 5.4rem); line-height: 1.01; }
.manifesto-copy p, .tech-intro p, .partners-heading p { color: var(--muted); font-size: 1.05rem; max-width: 720px; margin-top: 26px; }
.principles { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.principles article { padding: 32px 28px 10px 0; border-right: 1px solid var(--line); }
.principles article + article { padding-left: 28px; }
.principles article:last-child { border-right: 0; }
.principles span, .partner-grid article > p { color: var(--accent); font-size: .7rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.principles h3 { font-size: 1.45rem; margin-top: 24px; }
.principles p { color: var(--muted); max-width: 320px; }
.training-note { grid-column: 1 / -1; margin: -40px 0 0; color: var(--muted); font-size: .8rem; }
.training-visual { grid-column: 1 / -1; position: relative; margin: 0; border: 1px solid var(--line); background: var(--panel); }
.training-visual img { width: 100%; height: auto; }
.exercise-overlay { position: absolute; inset: 0 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; padding: 30px 32px 65px; background: linear-gradient(180deg, rgba(5,6,8,.92), rgba(5,6,8,.72) 65%, transparent); }
.exercise-overlay article + article { border-left: 1px solid rgba(255,255,255,.22); padding-left: 28px; }
.exercise-overlay span { color: #f17a65; font-size: .7rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.exercise-overlay h3 { margin-top: 10px; font-size: clamp(1rem, 1.8vw, 1.45rem); line-height: 1.15; }
.exercise-overlay p { margin: 12px 0 0; color: #d7d5d1; font-size: .85rem; line-height: 1.5; }
.training-visual figcaption { position: absolute; inset: auto 0 0; padding: 24px 18px 14px; background: linear-gradient(transparent, rgba(5,6,8,.8)); color: #d7d5d1; font-size: .65rem; letter-spacing: .08em; text-transform: uppercase; }
@media (max-width: 680px) {
  .exercise-overlay { gap: 12px; padding: 16px 14px 36px; }
  .exercise-overlay article + article { padding-left: 12px; }
  .exercise-overlay span { font-size: .58rem; letter-spacing: .06em; }
  .exercise-overlay h3 { font-size: .85rem; }
  .exercise-overlay p { font-size: .75rem; }
  .training-visual { display: grid; }
  .training-visual img { grid-area: 1 / 1; align-self: end; }
  .exercise-overlay { position: relative; grid-area: 1 / 1; align-self: start; padding-bottom: 150px; }
  .training-visual figcaption { font-size: .55rem; }
}

.product-visual { max-width: 1440px; padding-top: 30px; padding-bottom: 60px; }
.visual-frame { position: relative; background: #dad4c9; overflow: hidden; }
.visual-frame img { width: 100%; }
.concept-label { position: absolute; left: 18px; bottom: 18px; padding: 9px 12px; background: rgba(10,11,13,.82); color: #d7d5d1; font-size: .67rem; letter-spacing: .08em; text-transform: uppercase; backdrop-filter: blur(10px); }

.technology { display: grid; grid-template-columns: .55fr 1.45fr; gap: 60px 90px; }
.sequence { grid-column: 2; margin-top: 28px; border-top: 1px solid var(--line); }
.sequence article { display: grid; grid-template-columns: 72px 1fr; gap: 24px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.sequence .number { color: var(--accent); font-family: "Space Grotesk", sans-serif; font-size: 1.1rem; }
.sequence h3 { font-size: 1.35rem; }
.sequence p { color: var(--muted); margin: 8px 0 0; }
.proof { grid-column: 1 / -1; margin-top: 60px; padding: 38px; background: var(--panel); border: 1px solid var(--line); display: grid; grid-template-columns: .9fr 1.2fr auto; gap: 42px; align-items: center; }
.proof h3 { font-size: 1.8rem; margin-top: 8px; }
.proof > p { color: var(--muted); margin: 0; }
.proof > a { white-space: nowrap; color: var(--text); font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; padding-bottom: 6px; border-bottom: 1px solid var(--accent); }

.partners { border-top: 1px solid var(--line); }
.partners-heading { display: grid; grid-template-columns: 1.4fr .6fr; gap: 80px; align-items: end; margin-top: 34px; }
.partner-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 70px; }
.partner-grid article { min-height: 310px; padding: 28px; border: 1px solid var(--line); margin-right: -1px; display: flex; flex-direction: column; transition: background .25s ease, transform .25s ease; }
.partner-grid article:hover { background: #15171b; transform: translateY(-4px); }
.partner-grid h3 { font-size: 1.7rem; margin-top: 56px; }
.partner-grid span { color: var(--muted); margin-top: auto; }

.contact { max-width: none; text-align: center; background: #e7e2d8; color: #101114; padding-top: 130px; padding-bottom: 130px; }
.contact .eyebrow { color: #b93525; }
.contact h2 { max-width: 950px; margin: 18px auto 0; }
.contact > p:not(.eyebrow) { max-width: 650px; margin: 28px auto 34px; color: #4d4e50; }
.contact .button.primary { background: #101114; border-color: #101114; }
.contact .button.primary:hover { background: #2b2d31; }
footer { min-height: 140px; padding: 36px clamp(22px, 4vw, 64px); display: grid; grid-template-columns: 1fr auto auto; gap: 40px; align-items: center; color: #7f8184; font-size: .76rem; border-top: 1px solid var(--line); }
footer .brand { color: var(--text); }

@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto; }
  nav { display: none; }
  .hero-content { width: min(600px, 100%); }
  .hero-index { left: 0; grid-template-columns: repeat(3, 1fr); }
  .hero-index div { padding: 15px 12px; }
  .hero-index strong { font-size: .66rem; }
  .manifesto, .technology { grid-template-columns: 1fr; gap: 28px; }
  .training-note { margin-top: 0; }
  .sequence, .proof { grid-column: 1; }
  .proof { grid-template-columns: 1fr; gap: 22px; }
  .partners-heading { grid-template-columns: 1fr; gap: 12px; }
}

@media (max-width: 680px) {
  .site-header { height: 66px; }
  .nav-cta { font-size: .64rem; }
  .hero { min-height: 820px; align-items: flex-end; padding: 115px 20px 195px; }
  .hero-image { object-position: 58% center; }
  .hero-overlay { background: linear-gradient(0deg, rgba(5,6,8,.97) 0%, rgba(5,6,8,.65) 62%, rgba(5,6,8,.18) 100%); }
  .hero-content { margin: 0; }
  h1 { font-size: clamp(2.35rem, 9vw, 3.2rem); }
  .hero-copy { font-size: .96rem; }
  .button { width: 100%; }
  .hero-index { grid-template-columns: 1fr; width: 100%; }
  .hero-index div { grid-template-columns: 32px 1fr; align-items: center; border-right: 0; border-bottom: 1px solid var(--line); }
  .section { padding-top: 92px; padding-bottom: 92px; }
  .manifesto-copy h2, .tech-intro h2, .partners-heading h2, .contact h2 { font-size: 2.65rem; }
  .principles, .partner-grid { grid-template-columns: 1fr; }
  .principles article, .principles article + article { padding: 28px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .partner-grid article { min-height: 260px; margin: 0 0 -1px; }
  .concept-label { position: static; display: block; }
  .sequence article { grid-template-columns: 44px 1fr; gap: 14px; }
  footer { grid-template-columns: 1fr; gap: 8px; }
}

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