:root {
  --ink: #1b2430;
  --ink-soft: #3a4756;
  --muted: #667487;
  --paper: #eef1f4;
  --paper-deep: #e4e8ed;
  --surface: #fbfcfd;
  --line: #cfd6de;
  --navy: #1e3a5f;
  --navy-deep: #152a45;
  --brass: #a67c3d;
  --brass-soft: #f3ead8;
  --signal: #1f7a5c;
  --signal-soft: #dceee7;
  --shadow: 0 8px 24px rgba(21, 42, 69, 0.06);
  --radius: 12px;
  --shell: 1040px;
  --font-ui: "Sora", system-ui, sans-serif;
  --font-body: "Source Sans 3", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

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

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  background:
    linear-gradient(180deg, var(--paper) 0%, var(--paper-deep) 100%);
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 100;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--navy-deep);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}

.skip-link:focus {
  top: 12px;
}

.shell {
  width: min(100% - 32px, var(--shell));
  margin-inline: auto;
}

.masthead {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.masthead__bar {
  background: var(--navy-deep);
  color: #e8eef4;
}

.masthead__bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 44px;
  padding: 8px 0;
}

.brand {
  margin: 0;
  min-width: 0;
  flex: 1 1 auto;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: clamp(0.72rem, 0.62rem + 0.45vw, 0.82rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.3;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.masthead__tag {
  flex: 0 0 auto;
  padding: 3px 8px;
  border: 1px solid rgba(232, 238, 244, 0.28);
  border-radius: 999px;
  font-family: var(--font-ui);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #d6c094;
}

.masthead__inner {
  padding: 22px 0 20px;
}

.pins {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 14px;
  margin-bottom: 10px;
}

.pins span {
  display: block;
  width: 7px;
  border-radius: 1px 1px 0 0;
  background: var(--navy);
}

.pins span:nth-child(1) { height: 7px; }
.pins span:nth-child(2) { height: 12px; background: var(--brass); }
.pins span:nth-child(3) { height: 5px; }
.pins span:nth-child(4) { height: 10px; }
.pins span:nth-child(5) { height: 6px; }

.masthead h1 {
  margin: 0 0 8px;
  max-width: 100%;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: clamp(1.2rem, 1.02rem + 1.1vw, 1.65rem);
  letter-spacing: -0.02em;
  line-height: 1.25;
  overflow-wrap: anywhere;
  word-break: break-word;
  hyphens: auto;
}

.lede {
  margin: 0;
  max-width: 38rem;
  color: var(--ink-soft);
  font-size: clamp(0.92rem, 0.88rem + 0.2vw, 1rem);
  overflow-wrap: anywhere;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 16px 0 0;
}

.meta > div {
  min-width: 0;
}

.meta dt {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass);
  font-weight: 600;
}

.meta dd {
  margin: 2px 0 0;
  font-weight: 600;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.layout {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 28px;
  padding: 28px 0 56px;
  align-items: start;
}

.toc {
  position: sticky;
  top: 16px;
  padding: 14px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.toc__label {
  margin: 0 0 8px;
  font-family: var(--font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

.toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
}

.toc a {
  display: block;
  padding: 6px 8px;
  border-radius: 6px;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  border-left: 2px solid transparent;
  transition: background 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

.toc a:hover,
.toc a:focus-visible {
  background: var(--signal-soft);
  color: var(--navy-deep);
  border-left-color: var(--signal);
  outline: none;
}

.content {
  min-width: 0;
}

.block {
  margin: 0 0 18px;
  padding: 20px 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.block:last-of-type {
  margin-bottom: 0;
}

.block h2 {
  margin: 0 0 10px;
  font-family: var(--font-ui);
  font-size: clamp(1.05rem, 0.98rem + 0.4vw, 1.2rem);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.3;
  color: var(--navy-deep);
  overflow-wrap: anywhere;
}

.block h3 {
  margin: 18px 0 6px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
}

.block p {
  margin: 0 0 10px;
  color: var(--ink-soft);
  overflow-wrap: anywhere;
}

.block p:last-child {
  margin-bottom: 0;
}

.block ul {
  margin: 0 0 10px;
  padding-left: 1.15rem;
  color: var(--ink-soft);
}

.block li {
  margin: 0.35rem 0;
  overflow-wrap: anywhere;
}

.block li::marker {
  color: var(--brass);
}

.callout {
  margin: 14px 0 0;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid rgba(31, 122, 92, 0.22);
  background: var(--signal-soft);
}

.callout p {
  margin: 0;
  color: #155744;
  font-weight: 500;
}

.defs {
  margin: 14px 0 0;
  display: grid;
  gap: 8px;
}

.defs > div {
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--paper);
  border: 1px solid rgba(207, 214, 222, 0.85);
}

.defs dt {
  margin: 0 0 3px;
  font-family: var(--font-ui);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink);
}

.defs dd {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.chips {
  list-style: none;
  padding: 0 !important;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chips li {
  margin: 0 !important;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--brass-soft);
  color: #6d4f1f;
  font-weight: 600;
  font-size: 0.86rem;
  border: 1px solid rgba(166, 124, 61, 0.22);
}

.block--contact {
  background: linear-gradient(165deg, var(--navy-deep) 0%, var(--navy) 100%);
  border-color: transparent;
  color: #eef3f8;
}

.block--contact h2,
.block--contact p {
  color: #eef3f8;
}

.block--contact p {
  opacity: 0.92;
}

.contact-link {
  margin-top: 8px !important;
}

.contact-link a {
  display: block;
  width: fit-content;
  max-width: 100%;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(238, 243, 248, 0.1);
  border: 1px solid rgba(214, 192, 148, 0.45);
  color: #e4d2a4;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: clamp(0.78rem, 0.7rem + 0.4vw, 0.92rem);
  line-height: 1.35;
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: background 0.16s ease;
}

.contact-link a:hover,
.contact-link a:focus-visible {
  background: rgba(214, 192, 148, 0.16);
  outline: none;
}

.page-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
  padding-top: 4px;
}

.page-footer__brand {
  margin: 0;
  min-width: 0;
  flex: 1 1 10rem;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.88rem;
  letter-spacing: -0.01em;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.back-top {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--navy);
  font-weight: 600;
  font-size: 0.88rem;
  text-decoration: none;
  transition: background 0.16s ease, border-color 0.16s ease;
}

.back-top:hover,
.back-top:focus-visible {
  background: var(--signal-soft);
  border-color: rgba(31, 122, 92, 0.35);
  outline: none;
}

a:focus-visible {
  outline: 2px solid var(--navy);
  outline-offset: 2px;
}

@media (max-width: 860px) {
  .layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
    padding: 20px 0 40px;
  }

  .toc {
    position: static;
    padding: 12px;
  }

  .toc ol {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px 6px;
  }

  .block {
    padding: 16px 14px 14px;
  }

  .masthead__inner {
    padding: 18px 0 16px;
  }
}

@media (max-width: 520px) {
  .shell {
    width: min(100% - 24px, var(--shell));
  }

  .toc ol {
    grid-template-columns: 1fr;
  }

  .meta {
    gap: 10px 16px;
  }

  body {
    font-size: 15.5px;
  }
}

@media (max-width: 360px) {
  .shell {
    width: min(100% - 16px, var(--shell));
  }

  .masthead__bar-inner {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .masthead h1 {
    font-size: 1.15rem;
  }

  .brand {
    font-size: 0.7rem;
    letter-spacing: 0.04em;
  }

  .block {
    padding: 14px 12px 12px;
  }

  .toc a {
    padding: 7px 6px;
  }

  .contact-link a {
    width: 100%;
    text-align: center;
    padding: 8px 10px;
  }
}