:root {
  color-scheme: dark;
  --background: #11110f;
  --foreground: #f3f0e8;
  --surface: #191917;
  --surface-strong: #20201d;
  --muted: #aaa69d;
  --muted-strong: #cec9bf;
  --border: #34332e;
  --border-soft: #292824;
  --accent: #4477aa;
  --accent-strong: color-mix(in srgb, var(--accent) 72%, white);
  --danger: #e07969;
  --warning: #d8b24c;
  --radius: 3px;
  --font-sans: "IBM Plex Sans", ui-sans-serif, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --font-size-body: 16px;
  --font-size-h1: clamp(36px, 4vw, 46px);
  --font-size-h2: clamp(25px, 2.4vw, 30px);
  --font-size-h3: 19px;
  --line-height-body: 1.6;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration-color: #706e66; text-underline-offset: 3px; }
a:hover { color: #fff; text-decoration-color: var(--accent); }
button, input { font: inherit; }
button:focus-visible,
input:focus-visible,
summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
code, pre, .mono { font-family: var(--font-mono); }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  min-height: 54px;
  padding: 0 24px;
  border-bottom: 1px solid var(--border);
  background: var(--background);
}

.article-panel-toggle,
.article-panel-close {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  background: transparent;
  color: var(--muted-strong);
  cursor: pointer;
}

.article-panel-toggle { min-height: 36px; margin-right: 18px; padding: 6px 0; font-size: 13px; }
.article-panel-toggle:hover,
.article-panel-close:hover { color: var(--foreground); }
.menu-mark { display: grid; gap: 4px; width: 17px; }
.menu-mark::before,
.menu-mark::after { content: ""; display: block; height: 1px; background: currentColor; }

.brand { display: flex; align-items: baseline; gap: 10px; }
.brand strong { font-size: 14px; font-weight: 600; }
.brand span { color: var(--muted); font-size: 13px; }
.tour-launcher { min-height: 30px; margin-left: auto; padding: 4px 9px; font-size: 12px; }
.reading-progress { position: absolute; left: 0; bottom: -1px; width: 0; height: 2px; background: var(--accent); }
.article-panel {
  position: fixed;
  z-index: 40;
  top: 54px;
  bottom: 0;
  left: 0;
  width: min(390px, calc(100vw - 34px));
  padding: 26px 24px;
  border-right: 1px solid var(--border);
  background: #151513;
  transform: translateX(-101%);
  visibility: hidden;
  transition: transform 180ms ease, visibility 180ms step-end;
}
.article-panel.is-open { transform: translateX(0); visibility: visible; transition: transform 180ms ease, visibility 0s step-start; }
.article-panel-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.article-panel-head strong { font-size: 14px; }
.article-panel-close { padding: 4px; font-size: 20px; line-height: 1; }
.article-list { margin-top: 10px; }
.article-option {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  width: 100%;
  padding: 15px 8px;
  border: 0;
  border-bottom: 1px solid var(--border-soft);
  background: transparent;
  color: var(--muted);
  text-align: left;
  cursor: pointer;
}
.article-option:hover { color: var(--foreground); background: var(--surface); }
.article-option.is-active { color: var(--foreground); }
.article-option.is-active .article-number { color: var(--accent-strong); }
.article-number { padding-top: 2px; color: #77736b; font-family: var(--font-mono); font-size: 12px; }
.article-option strong { display: block; margin-bottom: 3px; font-size: 14px; }
.article-summary { display: block; color: var(--muted); font-size: 12px; line-height: 1.45; }
.article-panel-backdrop {
  position: fixed;
  z-index: 35;
  inset: 54px 0 0;
  border: 0;
  background: rgb(0 0 0 / 56%);
  opacity: 0;
  visibility: hidden;
  cursor: default;
  transition: opacity 180ms ease, visibility 180ms step-end;
}
.article-panel-backdrop.is-open { opacity: 1; visibility: visible; transition: opacity 180ms ease, visibility 0s step-start; }
body.has-open-panel { overflow: hidden; }
.report-article[hidden] { display: none; }
.load-error { max-width: 720px; margin: 96px auto; padding: 0 28px; }

.report-intro { width: 100%; padding: 58px 0 0; }
.intro { display: grid; grid-template-columns: 20% 60% 20%; align-items: start; padding-bottom: 36px; }
.intro-copy { grid-column: 2; min-width: 0; padding: 0 clamp(28px, 3.2vw, 56px); }
.intro-aside { grid-column: 3; min-width: 0; padding: 4px 28px 0 20px; }
.report-layout { display: grid; grid-template-columns: 20% 60% 20%; min-height: 100vh; }
.toc-rail {
  position: sticky;
  top: 78px;
  grid-column: 1;
  align-self: start;
  justify-self: end;
  width: min(100%, 280px);
  min-width: 0;
  padding: 32px 28px 0;
}
.rail-title { margin: 0 0 14px; color: var(--muted-strong); font-size: 13px; font-weight: 500; }
.toc-nav .nav { border-left: 1px solid var(--border); }
.nav a {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 6px;
  margin-left: -1px;
  padding: 8px 10px 8px 14px;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.35;
  text-decoration: none;
}
.nav a:hover,
.nav a.is-active { color: var(--foreground); border-left-color: var(--accent); }
.nav a.is-active { font-weight: 600; }
.nav-index { color: #77736b; font-family: var(--font-mono); font-size: 12px; font-weight: 400; }
.nav a.is-active .nav-index { color: var(--accent-strong); }
main { grid-column: 2; width: 100%; min-width: 0; padding: 0 clamp(28px, 3.2vw, 56px) 96px; }
.context-rail {
  position: sticky;
  top: 78px;
  grid-column: 3;
  align-self: start;
  min-width: 0;
  max-height: calc(100vh - 96px);
  overflow: auto;
  padding: 32px 28px 24px 20px;
  border-left: 1px solid var(--border-soft);
}

h1, h2, h3 { margin: 0; color: #fffdf8; line-height: 1.2; }
h1 { font-size: var(--font-size-h1); font-weight: 600; letter-spacing: -0.03em; }
h2 { font-size: var(--font-size-h2); font-weight: 600; letter-spacing: -0.02em; }
h3 { font-size: var(--font-size-h3); font-weight: 600; }
.intro-copy > p,
.section-heading p,
section > p,
.note p { color: var(--foreground); font-size: var(--font-size-body); line-height: var(--line-height-body); }
.intro-copy > p { max-width: 780px; margin: 18px 0 0; }
.verdict { border-left: 3px solid var(--accent); padding: 4px 0 4px 20px; }
.verdict strong { display: block; margin-bottom: 8px; font-size: 17px; }
.verdict p { margin: 0; color: var(--muted); font-size: 14px; }
section { padding: 64px 0; border-top: 1px solid var(--border); scroll-margin-top: 78px; }
.section-heading { margin-bottom: 30px; }
.section-heading p { max-width: 780px; margin: 12px 0 0; }
.reveal { opacity: 0; transform: translateY(5px); transition: opacity 180ms ease, transform 180ms ease; }
.reveal.is-visible { opacity: 1; transform: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }