:root {
  --paper: #faf6ef;
  --paper-2: #f0e8d9;
  --card: #ffffff;
  --ink: #1d1b19;
  --muted: #5b564f;
  --clay: #d2562f;
  --clay-dark: #b6431f;
  --teal: #17625f;
  --sun: #f2b632;
  --line: rgba(29, 27, 25, .14);
  --radius: 18px;
  --shadow: 0 1px 2px rgba(29,27,25,.06), 0 10px 30px rgba(29,27,25,.08);
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-head: "Fraunces", Georgia, "Times New Roman", serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #17150f;
    --paper-2: #26221a;
    --card: #1f1c15;
    --ink: #f4eee2;
    --muted: #b9b1a2;
    --clay: #ee7449;
    --clay-dark: #ff8a63;
    --teal: #4fb3ab;
    --sun: #f2b632;
    --line: rgba(244, 238, 226, .16);
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 10px 30px rgba(0,0,0,.35);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--font-head); line-height: 1.15; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(2.3rem, 5.4vw, 4rem); font-weight: 700; }
h2 { font-size: clamp(1.75rem, 3.4vw, 2.6rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 700; }
p { margin: 0 0 1em; }
em { font-style: italic; color: var(--clay); }

.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }
.narrow { width: min(760px, 100% - 32px); }
.small { font-size: .92rem; color: var(--muted); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--sun); outline-offset: 3px; border-radius: 6px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.bar { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 700 1.2rem var(--font-head); }
.brand-mark { width: 34px; height: 34px; flex-shrink: 0; }
.nav { display: flex; align-items: center; gap: 22px; }
.nav a { text-decoration: none; font-weight: 500; font-size: .98rem; color: var(--muted); }
.nav a:hover { color: var(--ink); }
.nav .btn { color: #fff; }
.nav-toggle { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; transition: transform .2s, opacity .2s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Buttons */
.btn {
  display: inline-block; cursor: pointer; border: 2px solid var(--clay);
  background: var(--clay); color: #fff; text-decoration: none;
  font: 600 1rem var(--font-body); padding: 13px 24px; border-radius: 999px;
  transition: transform .15s, background .15s;
}
.btn:hover { background: var(--clay-dark); border-color: var(--clay-dark); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn-small { padding: 8px 18px; font-size: .95rem; }

/* Hero */
.hero { padding: clamp(40px, 7vw, 96px) 0 clamp(40px, 6vw, 80px); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(24px, 5vw, 64px); align-items: center; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font: 600 .78rem var(--font-body); color: var(--teal); margin-bottom: 1em; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 58ch; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 1.6em 0; }
.hero-points { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px 22px; font-size: .94rem; color: var(--muted); }
.hero-points li::before { content: "✓"; color: var(--teal); font-weight: 700; margin-right: 7px; }
.hero-art svg { width: 100%; height: auto; filter: drop-shadow(0 18px 24px rgba(29,27,25,.12)); }

/* Sections */
.section { padding: clamp(56px, 8vw, 104px) 0; }
.section-head { max-width: 720px; margin-bottom: 2.4rem; }
.section-head p:last-child { color: var(--muted); margin-bottom: 0; }
.section-tint { background: var(--paper-2); }
.section-dark { background: #1d1b19; color: #f4eee2; --muted: #c9c1b2; --line: rgba(244,238,226,.18); }
.section-dark .eyebrow { color: var(--sun); }
.section-dark em { color: var(--sun); }
.section-dark a { color: var(--sun); }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; box-shadow: var(--shadow);
}
.card p { color: var(--muted); }
.icon { width: 56px; height: 56px; border-radius: 14px; background: var(--paper-2); display: grid; place-items: center; margin-bottom: 18px; }
.icon svg { width: 32px; height: 32px; fill: none; stroke: var(--teal); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.icon svg circle { fill: var(--teal); stroke: none; }
.tick { list-style: none; padding: 0; margin: 1em 0 0; font-size: .96rem; }
.tick li { padding-left: 26px; position: relative; margin-bottom: .4em; }
.tick li::before { content: ""; position: absolute; left: 2px; top: .5em; width: 12px; height: 7px; border-left: 2.5px solid var(--clay); border-bottom: 2.5px solid var(--clay); transform: rotate(-45deg); }

/* Concept gallery */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.gallery figure { margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.gallery img { width: 100%; height: auto; aspect-ratio: 4 / 3; background: #f0e8d9; }
.gallery figcaption { display: grid; gap: 2px; padding: 14px 18px 18px; }
.gallery figcaption strong { font: 700 1.05rem var(--font-head); }
.gallery figcaption span { font-size: .9rem; color: var(--muted); }
.gallery-note { margin: 1.4rem 0 0; }

/* Steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: s; }
.steps li { border-top: 2px solid var(--line); padding-top: 22px; }
.steps p { color: var(--muted); font-size: .98rem; }
.num { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--sun); color: #1d1b19; font: 700 1.1rem var(--font-head); margin-bottom: 14px; }

/* Split layout */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 6vw, 80px); align-items: start; }
.audience { list-style: none; padding: 0; margin: 0; }
.audience li { padding: 18px 0; border-bottom: 1px solid var(--line); display: grid; gap: 2px; }
.audience li:first-child { border-top: 1px solid var(--line); }
.audience strong { font: 700 1.1rem var(--font-head); }
.audience span { color: var(--muted); }

/* Principles */
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 34px 28px; }
.principles h3 { font-size: 1.1rem; }
.principles p { color: var(--muted); margin: 0; }
.principles > div { border-left: 3px solid var(--clay); padding-left: 18px; }

/* FAQ */
.faq details { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq details:first-child { border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; font: 700 1.1rem var(--font-head); list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--clay); font-size: 1.5rem; line-height: 1; transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { margin: .8em 0 0; color: var(--muted); }

/* Form */
.form { background: rgba(255,255,255,.06); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; display: grid; gap: 16px; }
.form fieldset { border: 0; padding: 0; margin: 0; }
.form legend { font-weight: 600; margin-bottom: 10px; padding: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips input { position: absolute; opacity: 0; }
.chips span { display: inline-block; padding: 8px 16px; border: 1.5px solid var(--line); border-radius: 999px; cursor: pointer; font-size: .95rem; transition: .15s; }
.chips input:checked + span { background: var(--sun); color: #1d1b19; border-color: var(--sun); font-weight: 600; }
.chips input:focus-visible + span { outline: 3px solid var(--sun); outline-offset: 2px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: grid; gap: 6px; font-weight: 500; font-size: .95rem; }
.field input, .field textarea {
  font: inherit; color: #1d1b19; background: #fffdf8; border: 1.5px solid transparent;
  border-radius: 10px; padding: 11px 13px; width: 100%;
}
.field input:focus, .field textarea:focus { outline: 3px solid var(--sun); }
.field .invalid { border-color: #ff7a59; }
.form .btn { justify-self: start; }
.form-status { margin: 0; min-height: 1.4em; font-size: .95rem; }

/* Footer */
.site-footer { padding: 36px 0; border-top: 1px solid var(--line); }
.foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; }
.foot p { margin: 0; }

/* Reveal on scroll */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.in { opacity: 1; transform: none; }

@media (max-width: 920px) {
  .hero-grid, .split { grid-template-columns: 1fr; }
  .hero-art { max-width: 520px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .principles { grid-template-columns: repeat(2, 1fr); }
  .gallery { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    padding: 8px 16px 16px; display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px 4px; }
  .nav .btn { text-align: center; margin-top: 8px; }
  .cards, .row { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .gallery { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .steps, .principles { grid-template-columns: 1fr; }
  .card, .form { padding: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .nav-toggle span { transition: none; }
}