:root {
  color-scheme: light dark;
  --ink: #16392d;
  --ink-soft: #496259;
  --paper: #fbfaf5;
  --paper-deep: #f1eee3;
  --card: rgba(255, 255, 255, 0.75);
  --line: rgba(22, 57, 45, 0.14);
  --accent: #168957;
  --accent-dark: #0f7046;
  --ocean: #d9eef5;
  --ocean-deep: #65b7d7;
  --shadow: 0 24px 70px rgba(25, 68, 54, 0.12);
  --radius: 1.5rem;
  --max: 72rem;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
img { max-width: 100%; }

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 20;
  padding: .7rem 1rem;
  border-radius: .8rem;
  background: var(--ink);
  color: white;
}

.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid transparent;
  background: color-mix(in srgb, var(--paper) 84%, transparent);
  backdrop-filter: blur(18px) saturate(150%);
}

.nav-wrap,
.container {
  width: min(calc(100% - 2rem), var(--max));
  margin-inline: auto;
}

.nav-wrap {
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  text-decoration: none;
  font-size: 1.05rem;
  font-weight: 750;
  letter-spacing: -.02em;
}

.brand img { width: 2.25rem; height: 2.25rem; border-radius: 24%; box-shadow: 0 .2rem .65rem rgba(22, 57, 45, .16); }

.site-nav { display: flex; align-items: center; gap: .25rem; }
.site-nav a { padding: .55rem .8rem; border-radius: 999px; text-decoration: none; font-size: .92rem; font-weight: 600; }
.site-nav a:hover, .site-nav a[aria-current="page"] { background: var(--paper-deep); }
.menu-button { display: none; border: 0; background: none; color: inherit; font: inherit; }

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(4rem, 9vw, 8rem) 0 clamp(4.5rem, 10vw, 8rem);
  background:
    radial-gradient(circle at 84% 22%, rgba(101, 183, 215, .34), transparent 31rem),
    radial-gradient(circle at 5% 80%, rgba(22, 137, 87, .15), transparent 24rem);
}

.hero-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(20rem, .92fr); align-items: center; gap: clamp(2.5rem, 7vw, 6rem); }
.eyebrow { margin: 0 0 .8rem; color: var(--accent-dark); font-size: .78rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
h1, h2, h3 { margin-top: 0; line-height: 1.08; letter-spacing: -.035em; }
h1 { max-width: 12ch; margin-bottom: 1.2rem; font-size: clamp(3rem, 7.5vw, 6.3rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3.6rem); }
h3 { font-size: 1.25rem; }
.lead { max-width: 37rem; margin: 0; color: var(--ink-soft); font-size: clamp(1.1rem, 2.2vw, 1.35rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: .7rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  text-decoration: none;
  font-weight: 700;
}

.button.primary { border-color: var(--accent); background: var(--accent); color: white; box-shadow: 0 10px 25px rgba(22, 137, 87, .2); }
.button.primary:hover { background: var(--accent-dark); }

.atlas-visual { position: relative; aspect-ratio: 1 / .9; display: grid; place-items: center; perspective: 900px; }
.globe {
  width: min(90%, 29rem);
  border-radius: 50%;
  filter: drop-shadow(0 2.4rem 2.6rem rgba(22, 57, 45, .2));
  transform: rotate(-4deg);
}
.globe-sphere { stroke: rgba(22, 57, 45, .22); stroke-width: 3; }
.globe-grid { fill: none; stroke: rgba(255, 255, 255, .42); stroke-width: 2; }
.continents { stroke: rgba(12, 84, 51, .32); stroke-width: 2; stroke-linejoin: round; }
.globe-rim { fill: none; stroke: rgba(22, 57, 45, .3); stroke-width: 5; }
.globe-shine { fill: rgba(255, 255, 255, .24); }

.section { padding: clamp(4rem, 9vw, 7rem) 0; }
.section.alt { background: var(--paper-deep); }
.section-heading { max-width: 43rem; margin-bottom: 2.5rem; }
.section-heading p { color: var(--ink-soft); font-size: 1.12rem; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.feature-card, .privacy-card, .support-card { border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); box-shadow: 0 12px 40px rgba(22,57,45,.05); }
.feature-card { padding: 1.5rem; }
.feature-icon { display: grid; width: 2.75rem; height: 2.75rem; place-items: center; margin-bottom: 1.2rem; border-radius: .9rem; background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent-dark); font-size: 1.35rem; }
.feature-card p { margin-bottom: 0; color: var(--ink-soft); }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; counter-reset: steps; }
.step { counter-increment: steps; }
.step::before { content: "0" counter(steps); display: block; margin-bottom: .75rem; color: var(--accent); font-size: .85rem; font-weight: 850; letter-spacing: .1em; }
.step p { color: var(--ink-soft); }

.privacy-callout { display: grid; grid-template-columns: auto 1fr; gap: 1.25rem; align-items: start; padding: 1.6rem; border-radius: var(--radius); background: var(--ink); color: #eef8f2; }
.privacy-callout .lock { font-size: 2rem; }
.privacy-callout h3 { margin-bottom: .4rem; }
.privacy-callout p { margin: 0; color: #c7d9d1; }

.page-hero { padding: clamp(4rem, 9vw, 7rem) 0 3rem; background: linear-gradient(145deg, var(--ocean), transparent 65%); }
.page-hero h1 { max-width: 15ch; font-size: clamp(2.7rem, 7vw, 5rem); }
.page-hero .lead { max-width: 48rem; }
.content-layout { display: grid; grid-template-columns: minmax(0, 1fr) 16rem; gap: 4rem; align-items: start; }
.prose { max-width: 46rem; }
.prose h2 { margin-top: 3.2rem; font-size: 1.75rem; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: var(--ink-soft); }
.prose strong { color: var(--ink); }
.prose a { color: var(--accent-dark); font-weight: 650; }
.prose .summary { padding: 1.4rem; border-left: .25rem solid var(--accent); border-radius: .25rem 1rem 1rem .25rem; background: var(--paper-deep); }
.toc { position: sticky; top: 6rem; padding: 1.2rem; border: 1px solid var(--line); border-radius: 1rem; background: var(--card); }
.toc strong { display: block; margin-bottom: .6rem; }
.toc a { display: block; padding: .3rem 0; color: var(--ink-soft); text-decoration: none; font-size: .92rem; }
.toc a:hover { color: var(--accent-dark); }
.meta { margin-top: 1.25rem; color: var(--ink-soft); font-size: .9rem; }

.support-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.support-card { padding: 1.5rem; }
.support-card p { color: var(--ink-soft); }
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); padding: 1.1rem 0; }
.faq summary { cursor: pointer; font-weight: 750; }
.faq p { margin-bottom: 0; color: var(--ink-soft); }
.is-unconfigured { cursor: default; color: var(--ink-soft); pointer-events: none; }
.config-note { display: inline-block; margin-top: .4rem; padding: .25rem .5rem; border-radius: .45rem; background: #fff1be; color: #674f00; font-size: .78rem; font-weight: 750; }

.site-footer { padding: 2rem 0; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: .9rem; }
.footer-grid { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1rem; }
.footer-links a { text-decoration: none; }

@media (max-width: 800px) {
  .hero-grid, .content-layout { grid-template-columns: 1fr; }
  .atlas-visual { max-width: 32rem; margin-inline: auto; }
  .feature-grid, .steps { grid-template-columns: 1fr; }
  .toc { display: none; }
}

@media (max-width: 600px) {
  .menu-button { display: grid; width: 2.75rem; height: 2.75rem; place-items: center; border-radius: 50%; background: var(--paper-deep); }
  .site-nav { display: none; position: absolute; top: 4rem; left: 1rem; right: 1rem; flex-direction: column; align-items: stretch; padding: .6rem; border: 1px solid var(--line); border-radius: 1rem; background: var(--paper); box-shadow: var(--shadow); }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: .75rem; }
  .support-grid { grid-template-columns: 1fr; }
  .footer-grid { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #edf6f1;
    --ink-soft: #b1c5bc;
    --paper: #101814;
    --paper-deep: #18231e;
    --card: rgba(29, 42, 36, .82);
    --line: rgba(231, 246, 238, .14);
    --accent: #43c986;
    --accent-dark: #67dfa2;
    --ocean: #173b49;
    --ocean-deep: #1e657f;
  }
  .progress-pill { background: rgba(16,24,20,.82); }
  .config-note { background: #574717; color: #ffe593; }
}