:root {
  --black: #070707;
  --ink: #11110f;
  --cream: #f3efe6;
  --paper: #d9d5cc;
  --signal: #eaff2d;
  --line: rgba(255,255,255,.17);
  --max: 1320px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--black); color: #fff; font-family: Inter, system-ui, sans-serif; }
a { color: inherit; }

.site-header {
  position: fixed; inset: 0 0 auto; z-index: 20; height: 92px; padding: 0 clamp(22px, 5vw, 72px);
  display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid transparent;
  transition: background .25s ease, border-color .25s ease, height .25s ease;
}
.site-header.scrolled { height: 76px; background: rgba(7,7,7,.94); backdrop-filter: blur(14px); border-color: var(--line); }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; text-transform: uppercase; }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; border: 2px solid currentColor; border-radius: 50%; font: 900 24px/1 "Barlow Condensed"; position: relative; }
.brand-mark span { color: var(--signal); font-size: 14px; position: absolute; right: 4px; top: 2px; }
.brand-name { font: 800 16px/.83 "Barlow Condensed"; letter-spacing: .055em; }
nav { display: flex; gap: 34px; }
nav a { text-decoration: none; text-transform: uppercase; font-size: 12px; font-weight: 700; letter-spacing: .14em; }
nav a:hover { color: var(--signal); }

.button { display: inline-flex; align-items: center; justify-content: center; gap: 30px; min-height: 58px; padding: 0 24px; background: var(--signal); color: #090909; text-decoration: none; text-transform: uppercase; font: 800 14px/1 Inter; letter-spacing: .08em; transition: transform .2s, background .2s; }
.button:hover { transform: translateY(-2px); background: #f1ff76; }
.button-small { min-height: 43px; font-size: 11px; gap: 12px; }
.button-dark { background: var(--black); color: #fff; }
.button-dark:hover { background: #242424; }

.hero { min-height: 100svh; position: relative; overflow: hidden; display: flex; align-items: center; padding: 140px clamp(24px, 8vw, 130px) 90px; }
.hero-image, .hero-scrim { position: absolute; inset: 0; }
.hero-image { background: #050505 url('assets/nathan-hero-fullbody-v3.png') right center/auto 100% no-repeat; transform: none; }
.hero-scrim { background: linear-gradient(90deg, rgba(3,3,3,.97) 0%, rgba(3,3,3,.8) 39%, rgba(3,3,3,.18) 78%), linear-gradient(0deg, rgba(0,0,0,.58), rgba(0,0,0,.05) 52%); }
.hero-content { position: relative; z-index: 2; max-width: 820px; }
.eyebrow { margin: 0 0 28px; display: flex; align-items: center; gap: 12px; font-size: 11px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; }
.eyebrow span { width: 38px; height: 2px; background: var(--signal); }
.eyebrow.dark { color: #3c3c37; }
h1, h2, h3, blockquote { font-family: "Barlow Condensed", sans-serif; text-transform: uppercase; }
h1 { margin: 0; max-width: 800px; font-size: clamp(72px, 10.2vw, 156px); line-height: .77; letter-spacing: -.045em; font-weight: 900; }
h1 em, h2 em { color: var(--signal); font-style: italic; font-weight: 700; }
.hero-copy { margin: 34px 0 0; max-width: 575px; color: #ddd; font-size: clamp(16px, 1.35vw, 20px); line-height: 1.6; }
.hero-actions { display: flex; align-items: center; gap: 35px; margin-top: 38px; }
.text-link { text-decoration: none; text-transform: uppercase; font-size: 12px; font-weight: 800; letter-spacing: .12em; border-bottom: 1px solid currentColor; padding-bottom: 6px; }
.text-link:hover { color: var(--signal); }
.hero-rail { position: absolute; z-index: 2; right: 24px; top: 50%; transform: translateY(-50%); writing-mode: vertical-rl; display: flex; gap: 30px; color: rgba(255,255,255,.5); font-size: 9px; letter-spacing: .28em; text-transform: uppercase; }
.hero-rail span + span::before { content: "•"; margin-bottom: 30px; color: var(--signal); }
.scroll-cue { position: absolute; z-index: 2; bottom: 31px; right: clamp(48px, 8vw, 130px); text-decoration: none; text-transform: uppercase; font-size: 9px; letter-spacing: .2em; color: #bbb; }
.scroll-cue span { color: var(--signal); margin-left: 10px; }

.manifesto { background: var(--ink); border-top: 1px solid var(--line); padding: clamp(90px, 10vw, 155px) clamp(24px, 8vw, 130px); display: grid; grid-template-columns: minmax(160px, 1fr) 3fr; gap: 60px; }
.section-number { color: #777; font-size: 10px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; padding-top: 12px; }
.kicker { margin: 0 0 18px; color: var(--signal); font-size: 11px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.manifesto h2, .method h2, .start h2 { margin: 0; font-size: clamp(52px, 6.8vw, 104px); line-height: .88; letter-spacing: -.035em; }
.manifesto-copy > p:last-child { max-width: 650px; margin: 38px 0 0 auto; color: #bdbdb8; font-size: 17px; line-height: 1.75; }

.method { background: var(--paper); color: var(--ink); padding: clamp(90px, 10vw, 150px) clamp(24px, 8vw, 130px); }
.method h2 em, .start h2 em { color: #54544d; }
.method-grid { margin-top: 80px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid #a4a198; border-bottom: 1px solid #a4a198; }
.method-grid article { padding: 38px 40px 52px 0; min-height: 310px; position: relative; }
.method-grid article + article { border-left: 1px solid #a4a198; padding-left: 40px; }
.step { color: #76736b; font: 700 12px Inter; }
.method-grid h3 { margin: 72px 0 10px; font-size: 48px; line-height: 1; }
.method-grid p { margin: 0; max-width: 330px; color: #55534e; font-size: 15px; line-height: 1.65; }

.coach { display: grid; grid-template-columns: 1.1fr .9fr; min-height: 700px; }
.coach-statement { background: #0d0d0d; padding: 100px clamp(30px, 7vw, 110px); display: flex; flex-direction: column; justify-content: center; overflow: hidden; position: relative; isolation: isolate; }
.coach-statement-content { position: relative; }
.oversize-quote { color: var(--signal); font: 900 200px/.5 Georgia; opacity: .9; }
blockquote { margin: 58px 0 0; font-size: clamp(50px, 5.8vw, 89px); font-style: italic; font-weight: 700; line-height: .92; letter-spacing: -.025em; }
.coach-card { padding: 90px clamp(32px, 6vw, 90px); background: #181816; display: flex; flex-direction: column; justify-content: center; }
.coach-photo { width: min(300px, 82vw); height: min(300px, 82vw); flex: 0 0 auto; object-fit: cover; object-position: center; border-radius: 50%; border: 5px solid var(--signal); margin-bottom: 55px; filter: grayscale(1) contrast(1.08); box-shadow: 0 0 0 1px #555, 0 25px 70px rgba(0,0,0,.38); }
.coach-card h2 { margin: 0; font-size: clamp(48px, 5vw, 76px); line-height: .9; }
.coach-card p:not(.kicker) { max-width: 500px; margin: 25px 0 30px; color: #b5b5af; line-height: 1.7; }
.light { display: inline-block; }

.start { background: var(--signal); color: var(--ink); text-align: center; padding: clamp(100px, 12vw, 180px) 24px; }
.start .eyebrow { justify-content: center; }
.start .eyebrow span { background: var(--black); }
.start p:not(.eyebrow):not(.microcopy) { max-width: 610px; margin: 30px auto; line-height: 1.7; }
.start .button { margin-top: 10px; }
.microcopy { color: #46463f; font-size: 11px; text-transform: uppercase; letter-spacing: .13em; margin-top: 18px; }

footer { min-height: 190px; padding: 52px clamp(24px, 8vw, 130px); display: flex; align-items: center; justify-content: space-between; gap: 30px; color: #85857e; font-size: 11px; text-transform: uppercase; letter-spacing: .1em; }
.footer-brand { color: #fff; }

@media (max-width: 900px) {
  nav { display: none; }
  .site-header { height: 76px; }
  .hero { align-items: flex-end; padding-bottom: 100px; }
  .hero-image { background-image: url('assets/nathan-hero-vertical-v2.png'); background-position: center; background-size: cover; transform: scaleX(-1); }
  .hero-scrim { background: linear-gradient(90deg, rgba(3,3,3,.93), rgba(3,3,3,.25)), linear-gradient(0deg, rgba(0,0,0,.9) 0%, transparent 70%); }
  .hero-rail { display: none; }
  .manifesto { grid-template-columns: 1fr; gap: 35px; }
  .manifesto-copy > p:last-child { margin-left: 0; }
  .method-grid { grid-template-columns: 1fr; }
  .method-grid article { min-height: auto; padding: 35px 0; }
  .method-grid article + article { border-left: 0; border-top: 1px solid #a4a198; padding-left: 0; }
  .method-grid h3 { margin-top: 32px; }
  .coach { grid-template-columns: 1fr; }
  .coach-card { min-height: 650px; }
  footer { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  .site-header .button { display: none; }
  .brand-mark { width: 37px; height: 37px; }
  .hero { padding-left: 22px; padding-right: 22px; }
  h1 { font-size: clamp(66px, 22vw, 96px); }
  .hero-copy { max-width: 94%; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 24px; }
  .hero-actions .button { width: 100%; }
  .scroll-cue { right: 22px; }
  .coach-statement { min-height: 590px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}