:root {
  --night: #14211f;
  --night-2: #1b2b28;
  --cream: #f4efe6;
  --paper: #fffcf7;
  --ink: #2c2824;
  --muted: #5d564e;
  --line: #e3d8c8;
  --green: #166534;
  --green-soft: #e5f2eb;
  --mint: #7fc79a;
  --earth: #7a5632;
  --sand: #d9ac7a;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Source Sans 3", -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--green); }
button { font: inherit; }
.wrap { width: min(1120px, 100% - 40px); margin: 0 auto; }

/* Header */
.doc-header {
  color: var(--cream);
  background:
    radial-gradient(700px 300px at 85% 0%, rgba(127, 199, 154, 0.16), transparent 70%),
    linear-gradient(180deg, var(--night) 0%, var(--night-2) 100%);
  padding-bottom: 56px;
}
.doc-header .bar { display: flex; align-items: center; justify-content: space-between; padding: 20px 0; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--cream); font-weight: 700; font-size: 1.1rem; }
.brand img { width: 40px; height: 40px; border-radius: 11px; }
.bar nav { display: flex; gap: 24px; }
.bar nav a { color: rgba(244, 239, 230, 0.78); text-decoration: none; font-size: 0.97rem; }
.bar nav a:hover, .bar nav a[aria-current="page"] { color: var(--cream); }
.doc-title { padding-top: 36px; max-width: 760px; }
.doc-title .kicker { color: var(--mint); }
.doc-title h1 { font-size: clamp(2rem, 4.4vw, 3rem); line-height: 1.1; margin: 12px 0 12px; letter-spacing: -0.02em; }
.doc-title p { margin: 0; color: rgba(244, 239, 230, 0.72); font-size: 1.08rem; }
.kicker { font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; font-weight: 700; color: var(--earth); }

/* Language switch */
.lang-switch { display: inline-flex; margin-top: 24px; padding: 4px; border-radius: 999px; background: rgba(244, 239, 230, 0.08); border: 1px solid rgba(244, 239, 230, 0.14); }
.lang-switch button {
  border: 0; background: transparent; color: rgba(244, 239, 230, 0.75);
  padding: 6px 16px; border-radius: 999px; cursor: pointer; font-weight: 600; font-size: 0.92rem;
}
.lang-switch button[aria-pressed="true"] { background: var(--cream); color: var(--night); }
.js [data-lang][hidden] { display: none; }

/* Document body */
.doc { display: grid; grid-template-columns: 220px 1fr; gap: 56px; padding: 56px 0 96px; }
.toc { position: sticky; top: 24px; align-self: start; font-size: 0.95rem; }
.toc strong { display: block; margin-bottom: 10px; font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--earth); }
.toc ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; border-left: 2px solid var(--line); }
.toc a { display: block; padding: 2px 0 2px 14px; margin-left: -2px; color: var(--muted); text-decoration: none; border-left: 2px solid transparent; }
.toc a:hover { color: var(--green); border-left-color: var(--green); }
.content { max-width: 720px; }
.content h2 { font-size: 1.35rem; margin: 44px 0 10px; scroll-margin-top: 24px; }
.content h2:first-child { margin-top: 0; }
.content p, .content li { color: #3d3833; font-size: 1.05rem; }
.content ul { padding-left: 1.2rem; }
.summary {
  background: var(--paper); border: 1px solid var(--line); border-radius: 22px;
  padding: 24px 26px; margin-bottom: 8px;
}
.summary ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.summary li { display: flex; gap: 12px; align-items: flex-start; margin: 0; }
.summary li::before {
  content: ""; flex: none; width: 22px; height: 22px; margin-top: 3px; border-radius: 50%;
  background: var(--green-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23166534' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center / 13px no-repeat;
}
table { width: 100%; border-collapse: collapse; margin: 12px 0 8px; font-size: 0.98rem; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 0.82rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--earth); }
.meta { color: var(--muted); font-size: 0.95rem; }

/* Support */
.contact-card {
  display: flex; flex-wrap: wrap; gap: 20px; align-items: center; justify-content: space-between;
  background: var(--paper); border: 1px solid var(--line); border-radius: 22px; padding: 26px 28px;
}
.contact-card h2 { margin: 0 0 4px; }
.contact-card p { margin: 0; }
.button {
  display: inline-flex; align-items: center; gap: 10px; text-decoration: none;
  background: var(--green); color: #fff; font-weight: 700; padding: 12px 22px; border-radius: 14px;
}
.button:hover { background: #12542b; }
details {
  background: var(--paper); border: 1px solid var(--line); border-radius: 18px;
  padding: 0 22px; margin-bottom: 12px;
}
summary {
  cursor: pointer; list-style: none; padding: 18px 0; font-weight: 700; font-size: 1.05rem;
  display: flex; justify-content: space-between; gap: 16px; align-items: center;
}
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-size: 1.4rem; line-height: 1; color: var(--green); transition: transform 0.2s ease; }
details[open] summary::after { transform: rotate(45deg); }
details > *:not(summary) { margin-top: 0; }
details > p:last-child { padding-bottom: 18px; margin-bottom: 0; }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 36px 0 44px; color: var(--muted); font-size: 0.95rem; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 32px; justify-content: space-between; align-items: center; }
footer nav { display: flex; gap: 24px; flex-wrap: wrap; }
footer a { color: inherit; text-decoration: none; }
footer a:hover { color: var(--green); }

@media (max-width: 860px) {
  .doc { grid-template-columns: 1fr; gap: 28px; padding-top: 36px; }
  .toc { position: static; }
  .bar nav a.optional { display: none; }
}
@media (max-width: 600px) {
  th, td { padding: 10px 8px; font-size: 0.9rem; }
  .contact-card { padding: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}