/* Prolific Advisory Solutions — site styles
   Palette drawn from the logo: charcoal #3A3D46 and slate #74849B. */

:root {
  --ground: #f4f6f9;
  --surface: #ffffff;
  --ink: #2f333b;
  --ink-soft: #545b68;
  --slate: #74849b;
  --slate-deep: #4d5e77;
  --line: #dde2ea;
  --band: #2f333b;
  --band-ink: #e8ebf0;
  --band-soft: #a7b2c2;
  --focus: #4d5e77;
  --logo-light: block;
  --logo-dark: none;

  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  --wrap: 1120px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 6px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --ground: #1b1e24;
    --surface: #23272f;
    --ink: #e8ebf0;
    --ink-soft: #b3bbc8;
    --slate: #93a3b9;
    --slate-deep: #b6c3d5;
    --line: #353a45;
    --band: #14161b;
    --band-ink: #e8ebf0;
    --band-soft: #93a3b9;
    --focus: #b6c3d5;
    --logo-light: none;
    --logo-dark: block;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --ground: #1b1e24;
  --surface: #23272f;
  --ink: #e8ebf0;
  --ink-soft: #b3bbc8;
  --slate: #93a3b9;
  --slate-deep: #b6c3d5;
  --line: #353a45;
  --band: #14161b;
  --band-ink: #e8ebf0;
  --band-soft: #93a3b9;
  --focus: #b6c3d5;
  --logo-light: none;
  --logo-dark: block;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--slate-deep); text-underline-offset: 3px; }
a:hover { color: var(--ink); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 2px; }

h1, h2, h3 { font-family: var(--mono); font-weight: 600; letter-spacing: -0.02em; line-height: 1.15; text-wrap: balance; margin: 0; }
h1 { font-size: clamp(2.1rem, 5.2vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); }
h3 { font-size: 1.1rem; letter-spacing: -0.01em; }
p { margin: 0; }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }

.eyebrow {
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}

.lede { font-size: 1.15rem; color: var(--ink-soft); max-width: 60ch; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5em;
  padding: 0.8em 1.4em;
  border-radius: var(--radius);
  font: 600 0.95rem/1 var(--sans);
  text-decoration: none;
  border: 1px solid var(--ink);
  background: var(--ink); color: var(--ground);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.btn:hover { background: var(--slate-deep); border-color: var(--slate-deep); color: var(--ground); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--ground); border-color: var(--ink); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20;
  background: color-mix(in srgb, var(--ground) 88%, transparent);
  backdrop-filter: saturate(1.2) blur(10px);
  -webkit-backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 72px; }
.brand { display: block; flex-shrink: 0; }
.brand img { height: 34px; width: auto; }
.logo-on-light { display: var(--logo-light); }
.logo-on-dark { display: var(--logo-dark); }

.nav { display: flex; align-items: center; gap: 28px; }
.nav a:not(.btn) { color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; font-weight: 500; }
.nav a:not(.btn):hover { color: var(--ink); }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--line); border-radius: var(--radius);
  width: 44px; height: 44px; color: var(--ink); cursor: pointer; padding: 0;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  display: block; width: 18px; height: 2px; background: currentColor; margin: 0 auto; position: relative; content: "";
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }

@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .nav {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--ground); border-bottom: 1px solid var(--line);
    padding: 8px var(--gutter) 20px;
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a:not(.btn) { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav .btn { margin-top: 16px; justify-content: center; }
}

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding-block: clamp(56px, 9vw, 112px) clamp(48px, 7vw, 88px); }
.hero .wrap { position: relative; display: grid; gap: 28px; }
.hero h1 { max-width: 15ch; }
.hero-mark {
  position: absolute; right: -4%; top: 50%; transform: translateY(-50%);
  width: min(420px, 42vw); opacity: 0.35; pointer-events: none;
}
.paths { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 20px; max-width: 760px; }
.path {
  display: grid; gap: 6px;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none; color: var(--ink);
  transition: border-color 0.2s, transform 0.2s;
}
.path:hover { border-color: var(--slate); transform: translateY(-2px); color: var(--ink); }
.path strong { font-family: var(--mono); font-size: 1.15rem; font-weight: 600; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.path strong::after { content: "→"; color: var(--slate); transition: transform 0.2s; }
.path:hover strong::after { transform: translateX(4px); }
.path span { color: var(--ink-soft); font-size: 0.95rem; }
@media (max-width: 640px) {
  .paths { grid-template-columns: 1fr; }
  .hero-mark { opacity: 0.14; right: -20%; width: 70vw; }
}

/* ---------- Sections ---------- */
.section { padding-block: clamp(64px, 9vw, 112px); border-top: 1px solid var(--line); }
.section-head { display: grid; gap: 14px; margin-bottom: 44px; max-width: 720px; }

.split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(32px, 6vw, 80px); align-items: start; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }

.principles { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.principles li {
  padding: 16px 0 16px 28px; border-bottom: 1px solid var(--line); position: relative;
}
.principles li:first-child { border-top: 1px solid var(--line); }
.principles li::before {
  content: ""; position: absolute; left: 4px; top: 1.45em;
  width: 10px; height: 2px; background: var(--slate);
}
.prose { display: grid; gap: 18px; color: var(--ink-soft); max-width: 60ch; }
.prose strong { color: var(--ink); font-weight: 600; }

/* Offer grid — hairline-topped columns, not cards */
.offer { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px 36px; }
.offer > div { display: grid; gap: 10px; align-content: start; padding-top: 20px; border-top: 2px solid var(--ink); }
.offer p { color: var(--ink-soft); font-size: 0.97rem; }
@media (max-width: 900px) { .offer { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 580px) { .offer { grid-template-columns: 1fr; } }

/* Dark band — the conversation CTA */
.band { background: var(--band); color: var(--band-ink); padding-block: clamp(56px, 8vw, 96px); }
.band .wrap { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 40px; align-items: center; }
.band h2 { color: var(--band-ink); }
.band p { color: var(--band-soft); margin-top: 16px; max-width: 52ch; }
.band ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; font-family: var(--mono); font-size: 0.95rem; }
.band li { display: flex; gap: 12px; align-items: baseline; }
.band li::before { content: "—"; color: var(--band-soft); }
.band .btn { background: var(--band-ink); color: var(--band); border-color: var(--band-ink); margin-top: 28px; }
.band .btn:hover { background: transparent; color: var(--band-ink); }
@media (max-width: 760px) { .band .wrap { grid-template-columns: 1fr; } }

/* Client steps — a genuine sequence, so numbered */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; counter-reset: step; }
.steps li { counter-increment: step; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: grid; gap: 10px; align-content: start; }
.steps li::before { content: counter(step, decimal-leading-zero); font-family: var(--mono); color: var(--slate); font-size: 0.9rem; font-weight: 600; }
.steps p { color: var(--ink-soft); font-size: 0.95rem; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }
.note { margin-top: 28px; font-size: 0.9rem; color: var(--ink-soft); max-width: 70ch; }

/* FAQ */
.faq { display: grid; max-width: 820px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-child { border-top: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; padding: 22px 40px 22px 0; position: relative;
  font-family: var(--mono); font-weight: 600; font-size: 1.05rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  font-size: 1.4rem; font-weight: 400; color: var(--slate); transition: transform 0.2s;
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { padding: 0 0 24px; color: var(--ink-soft); max-width: 68ch; }

/* Contact */
.contact { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: clamp(32px, 6vw, 72px); }
@media (max-width: 860px) { .contact { grid-template-columns: 1fr; } }
.details { display: grid; gap: 26px; align-content: start; }
.details dt { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: var(--slate); margin-bottom: 6px; }
.details dd { margin: 0; font-size: 1.05rem; }
.details a { color: var(--ink); }
.details .phone { font-family: var(--mono); font-size: 1.35rem; font-weight: 600; text-decoration: none; }

.form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(22px, 4vw, 36px); display: grid; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }
.field { display: grid; gap: 6px; }
.field label { font-size: 0.85rem; font-weight: 600; }
.field input, .field select, .field textarea {
  font: inherit; font-size: 1rem; color: var(--ink);
  background: var(--ground); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0.7em 0.8em; width: 100%;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--focus); outline-offset: 0; border-color: transparent; }
.form small { color: var(--ink-soft); font-size: 0.82rem; }
.form-status { font-size: 0.95rem; padding: 12px 14px; border-radius: var(--radius); background: var(--ground); border: 1px solid var(--line); }

/* Footer */
.site-footer { background: var(--band); color: var(--band-soft); padding-block: 64px 40px; font-size: 0.9rem; }
.site-footer .wrap { display: grid; gap: 40px; }
.footer-top { display: grid; grid-template-columns: minmax(0, 2fr) repeat(2, minmax(0, 1fr)); gap: 40px; }
@media (max-width: 760px) { .footer-top { grid-template-columns: 1fr; } }
.footer-top img { height: 38px; width: auto; margin-bottom: 18px; }
.footer-top h3 { font-family: var(--sans); font-size: 0.75rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--band-ink); margin-bottom: 14px; }
.footer-top ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.site-footer a { color: var(--band-ink); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; color: var(--band-ink); }
.legal { border-top: 1px solid color-mix(in srgb, var(--band-soft) 30%, transparent); padding-top: 28px; display: grid; gap: 14px; font-size: 0.82rem; line-height: 1.6; max-width: 90ch; }
.legal strong { color: var(--band-ink); font-weight: 600; }

/* Policy pages */
.policy { padding-block: clamp(48px, 8vw, 96px); }
.policy .wrap { max-width: 820px; display: grid; gap: 22px; }
.policy h1 { font-size: clamp(2rem, 4.5vw, 2.8rem); margin-bottom: 8px; }
.policy h2 { font-size: 1.3rem; margin-top: 22px; }
.policy p, .policy li { color: var(--ink-soft); }
.policy ul { margin: 0; padding-left: 1.2em; display: grid; gap: 6px; }
.policy .callout { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; display: grid; gap: 6px; }
.policy .callout p { color: var(--ink); }

/* FSG page */
.fsg-card {
  display: grid; grid-template-columns: auto minmax(0, 1fr); gap: clamp(20px, 4vw, 36px); align-items: center;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(20px, 4vw, 32px); margin-block: 12px;
}
.fsg-info { display: grid; gap: 16px; }
.fsg-info h2 { margin: 0; font-size: 1.2rem; }
.doc-thumb {
  width: 96px; aspect-ratio: 3 / 4; max-width: 100%;
  background: var(--ground); border: 1px solid var(--line); border-radius: 4px;
  display: grid; place-items: center; align-content: center; gap: 8px;
  position: relative;
}
.doc-thumb img { width: 38px; }
.doc-thumb span { font-family: var(--mono); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.1em; color: var(--slate); }
.fsg-meta { display: flex; flex-wrap: wrap; gap: 8px 32px; margin: 0; }
.fsg-meta dt { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: var(--slate); }
.fsg-meta dd { margin: 2px 0 0; font-family: var(--mono); font-size: 0.95rem; color: var(--ink); }
.policy .fsg-contents { columns: 2; column-gap: 40px; display: block; }
.policy .fsg-contents li { break-inside: avoid; margin-bottom: 6px; }
@media (max-width: 560px) {
  .fsg-card { grid-template-columns: 1fr; }
  .doc-thumb { width: 72px; }
  .policy .fsg-contents { columns: 1; }
}

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