:root {
  --bg: #f8f7f4;
  --card: #ffffff;
  --ink: #09090b;
  --tint: #0f8a6c;
  --tint-deep: #0b6b54;
  --tint-wash: rgba(15, 138, 108, 0.12);
  --hairline: #f0ede7;
  --border: #e6e3dc;
  --text-55: #71717a;
  --text-45: #a1a1aa;
  --text-62: #52525b;
  --radius: 22px;
  --shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  --shadow-soft: 0 3px 10px rgba(0, 0, 0, 0.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(248, 247, 244, 0.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--hairline);
}

.nav-inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--tint-wash);
  color: var(--tint);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.4px;
}

.brand-name {
  display: block;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.brand-sub {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-45);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 100px;
  color: var(--text-55);
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--tint);
  background: var(--tint-wash);
}

.hero,
.summary,
article,
.wrap,
.footer-inner {
  max-width: 880px;
  margin: 0 auto;
  padding-left: 22px;
  padding-right: 22px;
}

.hero { padding-top: 48px; padding-bottom: 8px; }

.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--tint);
  background: var(--tint-wash);
  padding: 6px 10px;
  border-radius: 100px;
}

h1 {
  margin-top: 16px;
  font-size: clamp(32px, 6vw, 42px);
  font-weight: 700;
  letter-spacing: -1.3px;
  line-height: 1.08;
}

.lede {
  margin-top: 14px;
  max-width: 540px;
  font-size: 16px;
  color: var(--text-62);
  line-height: 1.5;
}

.updated {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-45);
  font-weight: 500;
}

.summary { margin-top: 28px; padding-bottom: 0; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 24px;
}

.summary-card p {
  font-size: 15px;
  color: var(--ink);
}

article { padding-top: 36px; padding-bottom: 80px; }

article h2 {
  margin-top: 40px;
  margin-bottom: 12px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

article h2:first-child { margin-top: 0; }

article h3 {
  margin-top: 22px;
  margin-bottom: 8px;
  font-size: 15px;
  font-weight: 600;
}

article p,
article li {
  font-size: 15px;
  color: var(--text-62);
}

article p { margin-bottom: 12px; }

article ul {
  padding-left: 20px;
  margin: 0 0 14px;
}

article li { margin-bottom: 6px; }

article strong { color: var(--ink); font-weight: 600; }

article a {
  color: var(--tint-deep);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.cta {
  margin-top: 48px;
  padding: 26px;
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
}

.cta h2 { margin: 0 0 8px; }

.cta p { margin-bottom: 16px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 0;
  border-radius: 100px;
  background: var(--tint);
  color: #fff;
  text-decoration: none;
  font-family: inherit;
  font-weight: 700;
  font-size: 14.5px;
  cursor: pointer;
}

.btn:hover { background: var(--tint-deep); }

.btn-block { width: 100%; min-height: 52px; font-size: 15px; }

.wrap { padding-top: 48px; padding-bottom: 80px; }

.grid {
  display: grid;
  grid-template-columns: 1fr 1.12fr;
  gap: 18px;
  margin-top: 36px;
  align-items: start;
}

.stack { display: grid; gap: 16px; }

.card h2 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.2px;
  margin-bottom: 16px;
}

.channel,
.faq-row {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 0;
  border-top: 1px solid var(--hairline);
}

.channel:first-of-type,
.faq-row:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--tint-wash);
  color: var(--tint);
  display: grid;
  place-items: center;
  flex: none;
}

.icon svg { width: 18px; height: 18px; }

.channel b,
.faq-row b {
  display: block;
  font-size: 14px;
  font-weight: 600;
}

.channel span,
.channel a,
.faq-row span {
  font-size: 13.5px;
  color: var(--text-55);
  text-decoration: none;
  font-weight: 500;
}

.channel a:hover {
  color: var(--tint-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.faq-row { display: block; }

.faq-row b { margin-bottom: 4px; }

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
}

.field { margin-bottom: 16px; }

input,
textarea {
  width: 100%;
  font-family: inherit;
  font-size: 15px;
  padding: 14px 16px;
  border: 0;
  border-radius: 16px;
  background: var(--card);
  color: var(--ink);
  outline: none;
  box-shadow: var(--shadow-soft);
}

textarea { resize: vertical; min-height: 130px; line-height: 1.55; }

input:focus,
textarea:focus {
  box-shadow: var(--shadow-soft), 0 0 0 4px var(--tint-wash);
}

.topics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 4px;
}

.topics button {
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 100px;
  border: 0;
  background: var(--card);
  color: var(--ink);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
}

.topics button.active {
  background: var(--ink);
  color: #fff;
  box-shadow: none;
}

.hint {
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-45);
}

.hint a { color: var(--tint-deep); font-weight: 600; }

.success {
  display: none;
  text-align: center;
  padding: 28px 8px;
}

.success.show { display: block; }
form.hide { display: none; }

.check {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--tint-wash);
  color: var(--tint);
  display: grid;
  place-items: center;
  font-size: 22px;
  font-weight: 700;
}

footer {
  border-top: 1px solid var(--hairline);
}

.footer-inner {
  padding-top: 28px;
  padding-bottom: 36px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: var(--text-45);
}

footer a {
  color: var(--text-55);
  font-weight: 600;
  text-decoration: none;
}

footer a:hover { color: var(--tint-deep); }

@media (max-width: 800px) {
  .grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .nav-links a:not(.active) { display: none; }
}