/* TheValueChain brand applied to a personal site.
   Layout idea: white content "slides" with a crimson rule under every title, navy/crimson orbs bleeding off the top-right as in the TVC cover. */
:root {
  --navy: #2D2F6B;
  --navy-deep: #1E2060;
  --navy-mid: #252868;
  --crimson: #C0284A;
  --white: #FFFFFF;
  --grey: #F5F5F7;
  --card: #F0F2F8;
  --card-line: #D8DCE8;
  --ink: #1A1A1A;
  --slate: #64748B;
  --font: Arial, "Helvetica Neue", Helvetica, "Liberation Sans", sans-serif;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--white); color: var(--ink); font-family: var(--font); font-size: 1.0625rem; line-height: 1.6; }
img { max-width: 100%; }
a { color: var(--navy); }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--crimson); outline-offset: 3px; border-radius: 2px; }
.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 clamp(16px, 4vw, 40px); position: relative; }
.narrow { max-width: 820px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--navy); color: var(--white); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }

/* Header */
.site-head { position: sticky; top: 0; z-index: 5; background: rgba(255,255,255,.94); backdrop-filter: saturate(1.4) blur(8px); border-bottom: 1px solid #E6E8EF; }
.head-row { display: flex; align-items: center; gap: 24px; min-height: 76px; }
.brand { display: grid; text-decoration: none; line-height: 1.2; margin-right: auto; }
.brand-name { font-weight: 700; color: var(--navy); font-size: 1.0625rem; }
.brand-role { font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--crimson); }
.site-head nav { display: flex; gap: 22px; flex-wrap: wrap; }
.site-head nav a { text-decoration: none; color: var(--ink); font-size: .9375rem; padding: 4px 0; border-bottom: 2px solid transparent; }
.site-head nav a:hover, .site-head nav a[aria-current="page"] { border-bottom-color: var(--crimson); color: var(--navy); }
.tvc { display: block; width: 60px; height: 60px; flex: none; }
.tvc img { width: 60px; height: 60px; display: block; }

/* Brand atoms */
.label { margin: 0 0 10px; font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: var(--crimson); font-weight: 700; }
.label a { color: inherit; text-decoration: none; }
.label-light { color: #FF8BA3; }
.rule { height: 3px; width: 100%; background: var(--crimson); margin: 18px 0 28px; transform-origin: left; }
h1, h2, h3 { color: var(--navy); text-wrap: balance; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); line-height: 1.12; margin: 0; letter-spacing: -.01em; }
h3 { font-size: 1.125rem; line-height: 1.3; margin: 0; }
.intro { max-width: 65ch; margin: 0 0 28px; color: #333; }
.box { justify-self: start; display: inline-grid; place-items: center; min-width: 44px; height: 32px; padding: 0 8px; background: var(--navy-mid); color: var(--white); font-weight: 700; font-size: .9375rem; font-variant-numeric: tabular-nums; }
.btn { display: inline-flex; align-items: center; padding: 14px 22px; background: var(--navy); color: var(--white); text-decoration: none; font-weight: 700; border: 2px solid var(--navy); transition: background .2s, color .2s; }
.btn:hover { background: var(--crimson); border-color: var(--crimson); }
.btn-line { background: transparent; color: var(--navy); }
.btn-line:hover { color: var(--white); }

/* Sections */
.sec { padding: clamp(56px, 8vw, 96px) 0; }
.sec-grey { background: var(--grey); }
.split { display: flex; justify-content: space-between; align-items: end; gap: 16px; flex-wrap: wrap; }
.more { font-weight: 700; text-decoration: none; white-space: nowrap; }
.more:hover { color: var(--crimson); }

/* Hero */
.hero { position: relative; overflow: hidden; padding: clamp(56px, 9vw, 120px) 0 clamp(48px, 6vw, 72px); }
.hero-inner { z-index: 1; }
.hero h1 { font-size: clamp(2.6rem, 7vw, 5.2rem); line-height: 1; letter-spacing: -.025em; margin: 0 0 24px; max-width: 15ch; }
.hero h1 span { color: var(--crimson); }
.lede { font-size: clamp(1.125rem, 2vw, 1.3rem); max-width: 56ch; margin: 0 0 32px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: clamp(40px, 6vw, 64px) 0 0; max-width: 820px; border-top: 3px solid var(--crimson); }
.facts div { padding: 18px 16px 0 0; }
.facts div + div { padding-left: 16px; border-left: 1px solid var(--card-line); }
.facts dt { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 700; color: var(--navy); font-variant-numeric: tabular-nums; line-height: 1.1; }
.facts dd { margin: 4px 0 0; color: var(--slate); font-size: .875rem; }

.orbs { position: absolute; inset: 0; pointer-events: none; }
.orb { position: absolute; border-radius: 50%; will-change: transform; }
.orb-navy { width: clamp(280px, 38vw, 520px); aspect-ratio: 1; background: var(--navy-deep); top: clamp(-160px, -12vw, -60px); right: clamp(-200px, -10vw, -80px); }
.orb-red { width: clamp(130px, 17vw, 240px); aspect-ratio: 1; background: var(--crimson); top: clamp(170px, 24vw, 330px); right: clamp(-40px, 3vw, 60px); mix-blend-mode: multiply; }
.orb-ring { width: clamp(60px, 7vw, 96px); aspect-ratio: 1; border: 3px solid var(--navy); top: clamp(240px, 32vw, 450px); right: clamp(160px, 24vw, 360px); opacity: .5; }

/* Clients */
.clients { padding: 32px 0 40px; border-top: 1px solid #E6E8EF; border-bottom: 1px solid #E6E8EF; }
.marquee { overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.logos { list-style: none; margin: 8px 0 0; padding: 0; display: flex; gap: 64px; width: max-content; align-items: center; }
.marquee.run .logos { animation: slide 40s linear infinite; }
.marquee:hover .logos { animation-play-state: paused; }
.logos img { height: 44px; width: auto; filter: grayscale(1); opacity: .75; transition: filter .25s, opacity .25s; }
.logos img:hover { filter: none; opacity: 1; }
@keyframes slide { to { transform: translateX(-50%); } }
.logo-placeholder { border: 2px dashed var(--card-line); padding: 24px; color: var(--slate); text-align: center; font-size: .9375rem; }

/* Chain */
.chain { position: relative; }
.chain-track { height: 3px; background: var(--card-line); position: relative; margin: 0 22px; top: 22px; }
.chain-flow { position: absolute; left: 0; top: 0; height: 3px; width: 0; background: var(--crimson); transition: width .45s ease; }
.chain-tabs { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; position: relative; }
.chain-tabs button { all: unset; cursor: pointer; display: grid; gap: 10px; justify-items: start; padding-bottom: 12px; }
.chain-tabs .num { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: var(--white); border: 3px solid var(--card-line); color: var(--slate); font-weight: 700; font-size: .875rem; transition: all .25s; }
.chain-tabs .tab-name { font-weight: 700; color: var(--slate); font-size: .9375rem; line-height: 1.25; transition: color .25s; }
.chain-tabs button:hover .num { border-color: var(--navy); color: var(--navy); }
.chain-tabs button[aria-selected="true"] .num { background: var(--crimson); border-color: var(--crimson); color: var(--white); transform: scale(1.08); }
.chain-tabs button[aria-selected="true"] .tab-name { color: var(--navy); }
.chain-tabs button.done .num { border-color: var(--navy); background: var(--navy); color: var(--white); }
.chain-panels { margin-top: 16px; }
.chain-panel { background: var(--card); border: 1px solid var(--card-line); border-top: 4px solid var(--crimson); padding: clamp(20px, 3vw, 32px); animation: rise .35s ease both; }
.js .chain-panel[data-hidden="true"] { display: none; }
.chain-panel h3 { font-size: 1.375rem; }
.chain-panel .what { margin: 6px 0 20px; color: #333; }
.ph { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.ph h4 { margin: 0 0 6px; font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--crimson); }
.ph p { margin: 0; }
@keyframes rise { from { opacity: .4; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* Cards and rows */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.card { background: var(--white); border: 1px solid var(--card-line); border-top: 4px solid var(--crimson); padding: 22px; display: grid; gap: 12px; align-content: start; transition: transform .25s, box-shadow .25s; }
.card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px -18px rgba(30,32,96,.45); }
.card p { margin: 0; color: #333; font-size: .9375rem; }
.rows { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.rows li { display: grid; grid-template-columns: auto 1fr; gap: 20px; align-items: start; background: var(--card); border-left: 5px solid var(--navy-mid); padding: 18px 22px; }
.rows p { margin: 4px 0 0; color: #333; }

/* Posts */
.posts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.post-card { background: var(--white); border: 1px solid var(--card-line); border-top: 4px solid var(--navy); padding: 22px; display: grid; gap: 10px; align-content: start; transition: border-color .2s, transform .2s; }
.post-card:hover { border-top-color: var(--crimson); transform: translateY(-3px); }
.post-card h3 a { text-decoration: none; color: var(--navy); }
.post-card h3 a::after { content: ""; position: absolute; inset: 0; }
.post-card { position: relative; }
.post-card p { margin: 0; color: #333; font-size: .9375rem; }
.post-card .meta { color: var(--slate); font-size: .8125rem; }
.tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tags span { font-size: .75rem; padding: 3px 8px; background: var(--card); color: var(--navy); border: 1px solid var(--card-line); }
.post-card[hidden] { display: none; }
.empty { color: var(--slate); }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin: 0 0 24px; }
.filters button { font: inherit; font-size: .875rem; padding: 8px 14px; border: 2px solid var(--navy); background: var(--white); color: var(--navy); cursor: pointer; }
.filters button[aria-pressed="true"] { background: var(--navy); color: var(--white); }

/* Talks, beyond, faq */
.talks { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.talk { border: 1px solid var(--card-line); border-top: 4px solid var(--crimson); padding: 22px; display: grid; gap: 12px; align-content: start; background: var(--card); }
.talk p { margin: 0; color: #333; font-size: .9375rem; }
.formats { margin: 24px 0 0; color: var(--slate); font-size: .9375rem; }
.beyond { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.beyond div { border-top: 3px solid var(--navy); padding-top: 14px; }
.beyond p { margin: 6px 0 0; color: #333; font-size: .9375rem; }
.faq details { border-bottom: 1px solid var(--card-line); background: var(--white); }
.faq details + details { margin-top: 8px; }
.faq summary { cursor: pointer; padding: 18px 48px 18px 20px; font-weight: 700; color: var(--navy); list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); color: var(--crimson); font-size: 1.5rem; transition: transform .2s; }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { margin: 0; padding: 0 20px 20px; max-width: 65ch; }

/* Contact */
.contact { position: relative; overflow: hidden; background: var(--navy-deep); color: var(--white); padding: clamp(64px, 9vw, 112px) 0; }
.contact h2 { color: var(--white); font-size: clamp(1.9rem, 4.4vw, 3rem); max-width: 18ch; margin: 0 0 16px; }
.contact p { max-width: 50ch; margin: 0; color: #DCE0F0; }
.contact-inner { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: end; z-index: 1; }
.contact-lines { display: grid; gap: 14px; }
.contact-lines a { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; color: var(--white); text-decoration: none; border-bottom: 1px solid rgba(255,255,255,.3); padding-bottom: 10px; font-weight: 700; }
.contact-lines a:hover { border-bottom-color: var(--crimson); }
.contact-lines small { color: #AAB3D6; font-weight: 400; }
.copy { justify-self: start; font: inherit; font-size: .875rem; padding: 10px 16px; background: var(--crimson); color: var(--white); border: 0; cursor: pointer; }
.contact-logo { position: absolute; right: clamp(16px, 4vw, 40px); top: -24px; width: 96px; height: 96px; }
.orb-navy2 { width: 420px; aspect-ratio: 1; background: var(--navy-mid); top: -180px; right: -140px; }
.orb-red2 { width: 200px; aspect-ratio: 1; background: var(--crimson); bottom: -90px; right: 18%; }

/* Article */
.page-head { padding-bottom: 72px; }
.h1-page { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.08; margin: 0; letter-spacing: -.02em; }
.byline { color: var(--slate); font-size: .9375rem; margin: 0 0 20px; }
.summary { font-size: 1.25rem; color: var(--navy); margin: 0 0 32px; }
.prose { max-width: 68ch; }
.prose h2 { font-size: 1.5rem; margin: 40px 0 12px; padding-left: 14px; border-left: 4px solid var(--crimson); }
.prose h3 { margin: 28px 0 8px; }
.prose p, .prose li { color: #222; }
.prose blockquote { margin: 24px 0; padding: 4px 20px; border-left: 4px solid var(--navy); background: var(--card); }
.author { display: grid; grid-template-columns: auto 1fr; gap: 16px; margin: 48px 0; padding: 20px; background: var(--card); border-top: 4px solid var(--crimson); }
.author p { margin: 0 0 6px; font-size: .9375rem; }
.h-more { font-size: 1.5rem; margin: 0 0 16px; }
.article .posts { grid-template-columns: repeat(2, 1fr); }
.progress { position: fixed; left: 0; right: 0; top: 0; height: 4px; z-index: 6; }
.progress span { display: block; height: 100%; width: 100%; background: var(--crimson); transform: scaleX(0); transform-origin: left; }

/* Footer */
.site-foot { border-top: 1px solid #E6E8EF; padding: 24px 0 32px; font-size: .8125rem; color: var(--navy); }
.foot-row { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* Responsive */
@media (max-width: 900px) {
  .cards, .beyond { grid-template-columns: repeat(2, 1fr); }
  .posts, .talks { grid-template-columns: 1fr 1fr; }
  .chain-tabs { grid-template-columns: repeat(3, 1fr); row-gap: 16px; }
  .chain-track { display: none; }
  .contact-inner { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .site-head nav { display: none; }
  .facts { grid-template-columns: 1fr 1fr; }
  .facts div:nth-child(3) { padding-left: 0; border-left: 0; }
  .facts div:nth-child(n+3) { margin-top: 12px; }
  .cards, .beyond, .posts, .talks, .ph, .article .posts { grid-template-columns: 1fr; }
  .chain-tabs { grid-template-columns: repeat(2, 1fr); }
  .orb-navy { width: 190px; top: -120px; right: -90px; }
  .orb-red, .orb-ring { display: none; }
  .hero h1 { max-width: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}