:root {
  color-scheme: light;
  --bg: var(--tg-theme-bg-color, #f4f6f5);
  --card: var(--tg-theme-section-bg-color, #fff);
  --fg: var(--tg-theme-text-color, #18211f);
  --hint: var(--tg-theme-hint-color, #65736f);
  --accent: var(--tg-theme-link-color, #0d6b5f);
  --soft: var(--tg-theme-secondary-bg-color, #e7eeec);
  --line: color-mix(in srgb, var(--hint) 25%, transparent);
  --head: system-ui, -apple-system, "Segoe UI", sans-serif;
  --chart-text: var(--fg);
  --chart-line: var(--accent);
  --chart-grid: var(--hint);
  --chart-annotation: var(--hint);
  --chart-bg: var(--bg);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 Georgia, serif; }
.wrap { max-width: 720px; margin: auto; padding: 24px max(18px, env(safe-area-inset-right)) 48px max(18px, env(safe-area-inset-left)); }
h1, h2, h3, button, label, .meta, .secondary, summary { font-family: var(--head); }
h1 { font-size: clamp(30px, 7vw, 42px); line-height: 1.16; margin: 8px 0 24px; letter-spacing: -.025em; }
h2 { font-size: 15px; line-height: 1.4; margin: 0 0 12px; color: var(--accent); }
h3 { font-size: 20px; line-height: 1.3; margin: 6px 0; }
p { margin: 0 0 14px; white-space: pre-line; overflow-wrap: anywhere; }
section { margin: 24px 0; }
button, textarea { font: inherit; color: inherit; }
button { cursor: pointer; touch-action: manipulation; }
button:focus-visible, a:focus-visible, textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
button:disabled { opacity: .6; cursor: wait; }
a { color: var(--accent); overflow-wrap: anywhere; }
.picture, .expert { background: var(--soft); border-radius: 18px; padding: 20px; }
.picture p:last-child, .expert p:last-child { margin-bottom: 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 17px; margin: 10px 0; }
.card-open { display: block; width: 100%; border: 0; padding: 0; text-align: left; background: transparent; }
.card-open p { color: var(--hint); font-size: 16px; margin-bottom: 0; }
.lead { border-top: 4px solid var(--accent); padding: 22px; }
.lead h3 { font-size: clamp(25px, 6vw, 32px); }
.meta, .secondary { font: 13px/1.5 var(--head); color: var(--hint); }
.meta { display: block; margin-bottom: 8px; }
.back, .chat-button { background: transparent; color: var(--accent); border: 0; padding: 8px 0; font: 15px var(--head); }
.chat-button { display: block; margin-top: 12px; }
.label { border-left: 3px solid var(--accent); padding: 10px 14px; background: var(--soft); font: 14px/1.5 var(--head); }
article > h1 { font-size: clamp(27px, 7vw, 36px); }
.block { border-top: 1px solid var(--line); padding-top: 18px; }
.data-list, .watch-list { padding-left: 22px; }
.data-list { font-family: var(--head); font-size: 15px; }
.data-list li, .watch-list li { margin: 8px 0; white-space: pre-line; }
figure { margin: 18px 0; }
figure svg { max-width: 100%; height: auto; display: block; }
figcaption { font: 13px var(--head); color: var(--hint); margin: 6px 0; }
.sources { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; list-style: none; font: 14px var(--head); }
.sources a { display: inline-block; padding: 6px 10px; background: var(--soft); border-radius: 10px; }
.sources small { margin-left: 6px; color: var(--hint); }
details { padding: 14px 0; font: 14px/1.6 var(--head); }
summary { cursor: pointer; color: var(--hint); }
.short-list { padding-left: 21px; }
.short-list li { margin-bottom: 18px; }
.short-list strong { font-family: var(--head); }
.message { text-align: center; color: var(--hint); padding: 40px 0; font-family: var(--head); }
.chat-panel { border: 1px solid var(--line); background: var(--card); border-radius: 16px; padding: 18px; }
.chat-heading { display: flex; justify-content: space-between; align-items: baseline; }
.chat-heading button { background: transparent; border: 0; color: var(--hint); font: 14px var(--head); }
.chat-history { max-height: 55vh; overflow: auto; margin: 14px 0; }
.chat-message { padding: 12px; background: var(--soft); border-radius: 12px; margin: 10px 0; }
.chat-message.user { background: var(--bg); }
.chat-message p { margin: 4px 0; font-size: 16px; }
textarea { width: 100%; min-height: 90px; resize: vertical; background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 12px; font: 16px/1.5 var(--head); }
.send { background: var(--accent); color: var(--tg-theme-button-text-color, #fff); border: 0; border-radius: 10px; padding: 10px 16px; margin-top: 8px; font: 15px var(--head); }
.chat-error { font: 14px/1.5 var(--head); margin: 10px 0; color: var(--fg); }
.chat-status { font: 13px/1.5 var(--head); color: var(--hint); }
@media (prefers-color-scheme: dark) {
  :root { color-scheme: dark; --bg: var(--tg-theme-bg-color, #18211f); --card: var(--tg-theme-section-bg-color, #202d29); --fg: var(--tg-theme-text-color, #edf3f0); --hint: var(--tg-theme-hint-color, #a0b1a9); --soft: var(--tg-theme-secondary-bg-color, #293b34); --accent: var(--tg-theme-link-color, #85d1b7); }
}