/* Layout: an ink band carries the nav and each page's opener, calm paper sections sit on a 1160px measure, one mint band carries the payer edge, and every page closes on the ink "Next step" band. */
:root {
  --paper: #FAFBFA;
  --paper-2: #EEF4F1;
  --ink: #111617;
  --slate: #56605C;
  --rule: #D6DDDA;
  --accent-text: #23765A;
  --mint: #4EC393;
  --mint-ink: #111617;
  --band: #0F1514;
  --band-fg: #EDF2F0;
  --band-muted: #A3AFAB;
  --tab-bg: #23765A;
  --tab-fg: #FFFFFF;
  --field: #FFFFFF;
  --error: #B3261E;
  --display: "Montserrat", "Gotham", "Helvetica Neue", Arial, sans-serif;
  --body: "Charis SIL", Charter, "Bitstream Charter", Georgia, serif;
  --measure: 1160px;
  --gutter: clamp(16px, 4vw, 40px);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0D1211; --paper-2: #141C19; --ink: #E6ECE9; --slate: #9DA9A5;
    --rule: #26302D; --accent-text: #6FD3A8; --band: #070B0A; --band-fg: #EDF2F0;
    --band-muted: #A3AFAB; --field: #101715; --error: #F2B8B5; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0D1211; --paper-2: #141C19; --ink: #E6ECE9; --slate: #9DA9A5;
  --rule: #26302D; --accent-text: #6FD3A8; --band: #070B0A; --band-fg: #EDF2F0;
  --band-muted: #A3AFAB; --field: #101715; --error: #F2B8B5; color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--body); font-size: 1.125rem; line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-text); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 2px solid var(--mint); outline-offset: 3px; }
h1, h2, h3 { font-family: var(--display); font-weight: 500; line-height: 1.12; letter-spacing: -0.015em; text-wrap: balance; margin: 0; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.55rem); }
h3 { font-size: 1.15rem; font-weight: 600; letter-spacing: 0; }
p { margin: 0; text-wrap: pretty; }

.wrap { max-width: var(--measure); margin: 0 auto; padding-inline: var(--gutter); }
section { padding-block: clamp(64px, 9vw, 120px); }
.stack { display: grid; gap: 1.1rem; align-content: start; }
.muted { color: var(--slate); }
.alt { background: var(--paper-2); }

.tab {
  display: inline-block; justify-self: start; align-self: start;
  font-family: var(--display); font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  background: var(--tab-bg); color: var(--tab-fg); padding: 0.35em 0.75em 0.3em;
}
.eyebrow {
  font-family: var(--display); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent-text);
}
.band .eyebrow { color: var(--mint); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6em;
  font-family: var(--display); font-weight: 600; font-size: 0.95rem;
  padding: 0.95em 1.4em; text-decoration: none; border: 1.5px solid transparent;
  cursor: pointer; transition: transform 160ms ease, background 160ms ease;
}
.btn-mint { background: var(--mint); color: var(--mint-ink); }
.btn-mint:hover { background: #63CFA2; transform: translateY(-1px); }
.btn-line { border-color: currentColor; color: inherit; background: transparent; }
.btn-line:hover { transform: translateY(-1px); }
.btn[disabled] { opacity: 0.6; cursor: wait; transform: none; }
.arrow { font-family: var(--display); }

/* Band and nav */
.band { background: var(--band); color: var(--band-fg); }
.band a { color: var(--band-fg); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 22px; }
.nav img { height: 26px; width: auto; display: block; }
.nav ul { list-style: none; display: flex; gap: 30px; margin: 0; padding: 0; font-family: var(--display); font-size: 0.9rem; font-weight: 500; }
.nav ul a { text-decoration: none; color: var(--band-muted); padding-block: 6px; border-bottom: 2px solid transparent; }
.nav ul a:hover { color: var(--band-fg); }
.nav ul a[aria-current="page"] { color: var(--band-fg); border-bottom-color: var(--mint); }
.nav .ext { font-size: 0.8em; margin-left: 2px; }
.nav .btn { padding: 0.7em 1.1em; font-size: 0.85rem; }
.menu-btn { display: none; background: none; border: 1.5px solid var(--band-muted); color: var(--band-fg); font-family: var(--display); font-weight: 600; font-size: 0.85rem; padding: 0.55em 0.9em; cursor: pointer; }

/* Home hero */
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 32px; align-items: center; padding-block: clamp(40px, 7vw, 96px) clamp(56px, 8vw, 112px); }
.hero .stack { gap: 1.5rem; }
.hero h1 { font-size: clamp(2.6rem, 5.6vw, 4.6rem); letter-spacing: -0.025em; }
.hero h1 em { font-style: normal; color: var(--mint); }
.dek { font-size: 1.22rem; color: var(--band-fg); max-width: 36ch; opacity: 0.92; }
.actions { display: flex; flex-wrap: wrap; gap: 14px; padding-top: 0.5rem; }
.figure { margin: 0; display: grid; gap: 12px; min-width: 0; }
.figure canvas { width: 100%; height: clamp(240px, 34vw, 440px); display: block; }
.figure figcaption { font-family: var(--display); font-size: 0.78rem; color: var(--band-muted); letter-spacing: 0.02em; display: flex; gap: 18px; flex-wrap: wrap; }
.key { display: inline-flex; align-items: center; gap: 8px; }
.key i { display: inline-block; width: 18px; height: 2px; background: var(--band-muted); opacity: 0.6; }
.key i.m { background: var(--mint); opacity: 1; height: 3px; }

/* Inner page opener */
.opener { padding-block: clamp(36px, 6vw, 80px) clamp(48px, 7vw, 96px); display: grid; gap: 1.25rem; max-width: 52rem; }
.opener h1 { font-size: clamp(2.3rem, 5vw, 3.9rem); letter-spacing: -0.025em; }

/* Narrative */
.narrative-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(28px, 5vw, 72px); }
.narrative-grid h3 { font-size: clamp(1.3rem, 2.2vw, 1.6rem); font-weight: 500; letter-spacing: -0.01em; }
.imperative { margin-top: clamp(48px, 6vw, 80px); padding-top: clamp(32px, 4vw, 48px); border-top: 1px solid var(--rule); display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 24px; }
.imperative p { font-family: var(--display); font-weight: 500; font-size: clamp(1.45rem, 2.9vw, 2.3rem); line-height: 1.22; letter-spacing: -0.015em; }
.imperative mark { background: none; color: var(--accent-text); }

/* Split and curves */
.split { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(32px, 6vw, 80px); align-items: center; }
.curves { width: 100%; height: auto; display: block; }
.curves .axis { stroke: var(--slate); stroke-width: 1; opacity: 0.6; }
.curves .c1 { stroke: var(--slate); stroke-width: 2.5; fill: none; }
.curves .c2 { stroke: var(--mint); stroke-width: 3.5; fill: none; }
.curves .gap { fill: var(--mint); opacity: 0.14; }
.curves .gapline { stroke: var(--accent-text); stroke-width: 1; stroke-dasharray: 3 4; }
.curves text { font-family: var(--display); font-size: 12.5px; fill: var(--slate); }
.curves text.strong { fill: var(--ink); font-weight: 600; }
.curves text.acc { fill: var(--accent-text); font-weight: 600; }

/* Arenas */
.section-head { display: grid; gap: 1rem; max-width: 46rem; margin-bottom: clamp(36px, 5vw, 56px); }
.three { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(24px, 4vw, 48px); }
.three > div { border-top: 2px solid var(--ink); padding-top: 1.25rem; display: grid; gap: 0.75rem; align-content: start; }
.three > div.featured { border-top-color: var(--mint); }
.more { margin-top: clamp(28px, 4vw, 44px); font-family: var(--display); font-weight: 600; font-size: 0.95rem; }

/* Payer band */
.payer { background: var(--mint); color: var(--mint-ink); }
.payer .tab { background: var(--mint-ink); color: #FFFFFF; }
.payer h2 { font-size: clamp(1.9rem, 3.5vw, 2.9rem); letter-spacing: -0.02em; }
.payer .split { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); align-items: center; }
.payer p { font-size: 1.2rem; }
.payer .client { font-family: var(--display); font-weight: 600; font-size: 0.95rem; border-top: 1.5px solid var(--mint-ink); padding-top: 1rem; display: flex; gap: 12px; align-items: baseline; }

/* Big idea and feature map */
.bigidea { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 72px); margin-bottom: clamp(40px, 5vw, 64px); }
.bigidea dl { margin: 0; display: grid; gap: 1.25rem; align-content: start; }
.bigidea dt { font-family: var(--display); font-weight: 600; font-size: 1.05rem; color: var(--accent-text); }
.bigidea dd { margin: 0.25rem 0 0; }
.map { width: 100%; border-collapse: collapse; font-size: 1.02rem; }
.map caption { text-align: left; font-family: var(--display); font-weight: 500; font-size: clamp(1.25rem, 2.2vw, 1.6rem); padding-bottom: 1.25rem; }
.map th { font-family: var(--display); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--slate); text-align: left; padding: 0 20px 12px 0; border-bottom: 2px solid var(--ink); }
.map th:last-child { color: var(--accent-text); }
.map td { padding: 18px 20px 18px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
.map td:first-child, .map td:nth-child(2) { color: var(--slate); width: 27%; }
.map td:last-child { font-weight: 700; }

/* Example */
.figures { display: grid; gap: 28px; }
.fig { border-left: 3px solid var(--mint); padding-left: 22px; display: grid; gap: 6px; }
.fig strong { font-family: var(--display); font-weight: 500; font-size: clamp(2.6rem, 5vw, 3.8rem); line-height: 1; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.fig span { color: var(--slate); font-size: 1rem; }
.fig span.lead { color: var(--ink); font-size: 1.1rem; }
.fig small { font-family: var(--display); font-size: 0.7rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent-text); }

/* Agility posts */
.posts { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(20px, 3vw, 36px); }
.posts li { display: grid; gap: 0.6rem; align-content: start; border-top: 1px solid var(--rule); padding-top: 1.1rem; }
.posts .meta { font-family: var(--display); font-size: 0.75rem; font-weight: 500; color: var(--slate); letter-spacing: 0.04em; }
.posts a.title { font-family: var(--display); font-weight: 500; font-size: 1.2rem; line-height: 1.25; color: var(--ink); text-decoration: none; }
.posts a.title:hover { color: var(--accent-text); text-decoration: underline; }
.posts p { font-size: 1rem; color: var(--slate); }

/* Leaders */
.roster { display: grid; gap: 0; }
.leader { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: clamp(24px, 4vw, 56px); padding-block: clamp(36px, 5vw, 56px); border-top: 1px solid var(--rule); }
.leader:first-child { border-top: 0; padding-top: 0; }
.leader .photo { width: 200px; max-width: 100%; aspect-ratio: 1; object-fit: cover; display: block; filter: grayscale(1) contrast(1.05); background: var(--paper-2); transition: filter 300ms ease; }
.leader:hover .photo { filter: grayscale(0); }
.leader .photo.none { display: grid; place-items: center; font-family: var(--display); font-size: 2.6rem; font-weight: 500; color: var(--accent-text); filter: none; }
.leader .body { display: grid; gap: 0.9rem; align-content: start; max-width: 44rem; }
.leader .role { font-family: var(--display); font-size: 0.78rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent-text); }
.leader h2 { font-size: clamp(1.6rem, 2.6vw, 2.1rem); }
.leader .creds { font-family: var(--display); font-size: 0.85rem; color: var(--slate); }
.tbd { color: var(--slate); font-style: italic; }
.principles { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(28px, 5vw, 72px); }

/* Contact form */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr); gap: clamp(32px, 6vw, 88px); align-items: start; }
form { display: grid; gap: 1.4rem; }
.row2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem; }
.field { display: grid; gap: 0.45rem; min-width: 0; }
.field label { font-family: var(--display); font-size: 0.85rem; font-weight: 600; }
.field .hint { font-family: var(--display); font-size: 0.78rem; color: var(--slate); font-weight: 400; }
.field input, .field textarea, .field select {
  font: inherit; font-size: 1.05rem; color: var(--ink); background: var(--field);
  border: 1.5px solid var(--rule); padding: 0.75em 0.85em; width: 100%; border-radius: 0;
}
.field textarea { min-height: 11rem; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--accent-text); outline: none; }
.field[data-invalid] input, .field[data-invalid] textarea { border-color: var(--error); }
.field .err { font-family: var(--display); font-size: 0.8rem; color: var(--error); min-height: 1em; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.counter { font-family: var(--display); font-size: 0.75rem; color: var(--slate); justify-self: end; }
.verify { display: grid; gap: 0.5rem; }
.verify .note { font-family: var(--display); font-size: 0.8rem; color: var(--slate); }
.status { font-family: var(--display); font-size: 0.95rem; padding: 1rem 1.1rem; border-left: 3px solid var(--mint); background: var(--paper-2); }
.status.bad { border-left-color: var(--error); }
.aside { display: grid; gap: 1.5rem; padding: clamp(24px, 3vw, 36px); background: var(--paper-2); }
.aside h3 { font-size: 1.05rem; }
.aside .email { font-family: var(--display); font-weight: 500; font-size: 1.05rem; word-break: break-all; user-select: all; color: var(--ink); }
.aside ul { margin: 0; padding-left: 1.1rem; display: grid; gap: 0.4rem; font-size: 1rem; }

/* Next step band */
.next { padding-block: clamp(72px, 10vw, 136px); }
.next h2 { font-size: clamp(2.1rem, 4.6vw, 3.7rem); letter-spacing: -0.02em; max-width: 18ch; }
.next .split { align-items: start; }
.bring { list-style: none; margin: 0; padding: 0; display: grid; }
.bring li { padding: 16px 0; border-bottom: 1px solid color-mix(in srgb, var(--band-fg) 18%, transparent); display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 8px; }
.bring li::before { content: "?"; font-family: var(--display); font-weight: 600; color: var(--mint); }
.next .actions { margin-top: 2rem; }
.label-muted { font-family: var(--display); font-size: 0.78rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--band-muted); margin-bottom: 0.5rem; }

footer { border-top: 1px solid color-mix(in srgb, var(--band-fg) 12%, transparent); padding-block: 32px; font-family: var(--display); font-size: 0.85rem; color: var(--band-muted); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 32px; align-items: center; justify-content: space-between; }
footer img { height: 20px; width: auto; display: block; }
footer nav { display: flex; gap: 24px; flex-wrap: wrap; }
footer a { color: var(--band-muted); text-decoration: none; }
footer a:hover { color: var(--band-fg); }

@media (max-width: 900px) {
  .menu-btn { display: inline-block; }
  .nav { flex-wrap: wrap; }
  .nav ul { display: none; order: 3; width: 100%; flex-direction: column; gap: 0; padding-block: 8px 4px; }
  .nav.open ul { display: flex; }
  .nav ul a { display: block; padding-block: 12px; border-bottom: 1px solid color-mix(in srgb, var(--band-fg) 12%, transparent); }
  .nav ul a[aria-current="page"] { border-bottom-color: var(--mint); }
  .nav > .btn { display: none; }
  .hero, .split, .payer .split, .bigidea, .contact-grid { grid-template-columns: minmax(0, 1fr); }
  .three, .posts { grid-template-columns: minmax(0, 1fr); }
  .imperative { grid-template-columns: minmax(0, 1fr); gap: 12px; }
}
@media (max-width: 640px) {
  .narrative-grid, .principles, .row2 { grid-template-columns: minmax(0, 1fr); }
  .leader { grid-template-columns: minmax(0, 1fr); }
  .leader .photo { width: 140px; }
  .map thead { display: none; }
  .map caption { display: block; width: 100%; }
  .map, .map tbody, .map tr, .map td { display: block; width: 100%; }
  .map tr { padding: 18px 0; border-bottom: 1px solid var(--rule); }
  .map td { border: 0; padding: 4px 0; width: auto !important; }
  .map td::before { content: attr(data-label); display: block; font-family: var(--display); font-size: 0.68rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--slate); }
  .map td:last-child::before { color: var(--accent-text); }
  .actions .btn { flex: 1 1 auto; }
}