:root {
  --fsr-bg: #eef1f4;
  --fsr-panel: #fbfcfd;
  --fsr-ink: #17202a;
  --fsr-muted: #5f6b79;
  --fsr-rule: #ccd5df;
  --fsr-link: #225ea8;
  --fsr-up: #d6672d;
  --fsr-down: #7887d8;
  --fsr-mod: #25856e;
  --fsr-quote: #eee9fb;
  --fsr-shadow: rgba(23, 32, 42, 0.10);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--fsr-bg);
  color: var(--fsr-ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
}

a { color: inherit; }

.fsr-home,
.fsr-article {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.fsr-masthead {
  padding: 34px 0 24px;
  border-bottom: 1px solid var(--fsr-rule);
}

.fsr-postline,
.fsr-kicker,
.thread-meta,
.thread-temperature,
.article-meta,
.fsr-pin-tab {
  font-family: Consolas, Monaco, 'Courier New', monospace;
  font-size: 12px;
  letter-spacing: 0.03em;
  text-transform: lowercase;
  color: var(--fsr-muted);
}

.fsr-label { color: var(--fsr-mod); }
.fsr-dot { color: var(--fsr-rule); margin: 0 6px; }

.fsr-masthead h1,
.article-thread-head h1 {
  font-family: 'Lucida Grande', 'Lucida Sans Unicode', 'Lucida Sans', Geneva, Verdana, sans-serif;
  margin: 10px 0 14px;
  letter-spacing: -0.06em;
  line-height: 0.94;
  font-size: clamp(48px, 10vw, 116px);
  max-width: 980px;
}

.fsr-description {
  max-width: 760px;
  margin: 0;
  color: #263341;
  font-size: clamp(18px, 2.3vw, 26px);
  line-height: 1.35;
}

.fsr-topic-board {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.fsr-topic-board a,
.fsr-topic-board span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 11px;
  border: 1px solid var(--fsr-rule);
  border-left: 5px solid var(--fsr-link);
  border-radius: 7px;
  background: var(--fsr-panel);
  color: var(--fsr-ink);
  text-decoration: none;
  font-size: 14px;
}

.fsr-premise {
  position: relative;
  display: grid;
  grid-template-columns: 150px minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 24px;
  margin: 30px 0;
  padding: 26px;
  background: var(--fsr-panel);
  border: 1px solid var(--fsr-rule);
  border-radius: 18px;
  box-shadow: 0 18px 45px var(--fsr-shadow);
}

.fsr-premise h2,
.fsr-path h2,
.fsr-pinned h2,
.fsr-section-head h2,
.uptake-docket h2 {
  font-family: 'Lucida Grande', 'Lucida Sans Unicode', 'Lucida Sans', Geneva, Verdana, sans-serif;
  margin: 0;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.fsr-premise h2 { font-size: clamp(28px, 4.6vw, 54px); }
.fsr-premise p:last-child { margin: 28px 0 0; color: var(--fsr-muted); font-size: 17px; }

.reply-contour,
.article-contour {
  display: grid;
  align-content: start;
  gap: 10px;
}

.reply-contour span,
.article-contour span {
  display: block;
  height: 44px;
  border-left: 3px solid var(--fsr-rule);
  border-bottom: 3px solid var(--fsr-rule);
  border-radius: 0 0 0 12px;
  position: relative;
}

.reply-contour span::after,
.article-contour span::after {
  content: '';
  position: absolute;
  left: -7px;
  top: -2px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--fsr-up);
}

.reply-contour span:nth-child(2),
.article-contour span:nth-child(2) { margin-left: 24px; border-color: var(--fsr-down); }
.reply-contour span:nth-child(3),
.article-contour span:nth-child(3) { margin-left: 48px; border-color: var(--fsr-mod); }
.reply-contour span:nth-child(4),
.article-contour span:nth-child(4) { margin-left: 18px; }
.article-contour span:nth-child(5) { margin-left: 62px; border-color: var(--fsr-link); }

.fsr-path {
  margin: 34px 0;
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 22px;
  align-items: start;
}

.fsr-path h2 { font-size: clamp(24px, 3vw, 38px); }
.fsr-path ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.fsr-path li {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 14px;
  padding: 16px;
  background: var(--fsr-panel);
  border: 1px solid var(--fsr-rule);
  border-radius: 12px;
}

.fsr-path li strong { color: var(--fsr-link); }
.fsr-path li span { color: var(--fsr-muted); }

.fsr-pinned {
  position: relative;
  margin: 34px 0;
  padding: 24px 26px 26px;
  background: var(--fsr-quote);
  border: 1px solid #d9d0f3;
  border-radius: 18px;
}

.fsr-pin-tab {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 8px;
  background: var(--fsr-mod);
  color: white;
  border-radius: 999px;
}

.fsr-pinned h2 { max-width: 780px; font-size: clamp(28px, 4vw, 48px); }
.fsr-pinned p { max-width: 680px; margin: 14px 0 0; font-size: 18px; color: #334152; }

.fsr-archive { padding: 20px 0 56px; }
.fsr-section-head { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.fsr-section-head h2 { font-size: clamp(26px, 3.4vw, 44px); }

.fsr-post-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.thread-card-link {
  min-height: 100%;
  display: grid;
  grid-template-columns: 58px 1fr;
  text-decoration: none;
  background: var(--fsr-panel);
  border: 1px solid var(--fsr-rule);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 140ms ease, border-color 140ms ease, box-shadow 140ms ease;
}

.thread-card-link:hover {
  transform: translateY(-2px);
  border-color: #aebdca;
  box-shadow: 0 14px 28px var(--fsr-shadow);
}

.vote-well {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 7px;
  background: #e3e9ef;
  border-right: 1px solid var(--fsr-rule);
  font-family: Consolas, Monaco, 'Courier New', monospace;
  font-size: 11px;
  text-transform: lowercase;
  color: var(--fsr-muted);
}

.vote-up { color: var(--fsr-up); font-size: 18px; }
.vote-down { color: var(--fsr-down); font-size: 18px; }
.vote-label { writing-mode: vertical-rl; transform: rotate(180deg); }

.thread-card-main { padding: 16px 18px 14px; }
.thread-meta { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.thread-card h2 {
  margin: 0;
  font-family: 'Lucida Grande', 'Lucida Sans Unicode', 'Lucida Sans', Geneva, Verdana, sans-serif;
  font-size: clamp(20px, 2.4vw, 29px);
  letter-spacing: -0.04em;
  line-height: 1.08;
}
.thread-card p { margin: 10px 0 14px; color: var(--fsr-muted); }

.thread-gutters { display: flex; gap: 8px; align-items: end; height: 28px; }
.thread-gutters span { width: 36px; border-left: 2px solid var(--fsr-rule); border-bottom: 2px solid var(--fsr-rule); border-radius: 0 0 0 8px; }
.thread-gutters span:nth-child(2) { height: 21px; border-color: var(--fsr-up); }
.thread-gutters span:nth-child(3) { height: 14px; border-color: var(--fsr-mod); }

.article-thread-head {
  padding: 28px 0 20px;
  border-bottom: 1px solid var(--fsr-rule);
}
.article-back { margin-bottom: 16px; font-family: Consolas, Monaco, 'Courier New', monospace; font-size: 13px; }
.article-back a { color: var(--fsr-link); text-decoration-thickness: 2px; text-underline-offset: 3px; }
.article-thread-head h1 { font-size: clamp(40px, 7vw, 88px); max-width: 1040px; }
.article-meta { margin-top: 12px; }

.thread-temperature {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 18px 0;
}
.thread-temperature span {
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--fsr-panel);
  border: 1px solid var(--fsr-rule);
}
.thread-temperature span:nth-child(1) { border-left: 5px solid var(--fsr-up); }
.thread-temperature span:nth-child(2) { border-left: 5px solid var(--fsr-mod); }
.thread-temperature span:nth-child(3) { border-left: 5px solid var(--fsr-down); }
.thread-temperature span:nth-child(4) { border-left: 5px solid var(--fsr-link); }

.collapsed-thread-review {
  display: grid;
  grid-template-columns: 130px minmax(0, 760px);
  gap: 28px;
  align-items: start;
  padding: 28px;
  background: var(--fsr-panel);
  border: 1px solid var(--fsr-rule);
  border-radius: 20px;
}

.article-body {
  font-size: 18px;
  line-height: 1.72;
}
.article-body > *:first-child { margin-top: 0; }
.article-body h2,
.article-body h3 {
  font-family: 'Lucida Grande', 'Lucida Sans Unicode', 'Lucida Sans', Geneva, Verdana, sans-serif;
  letter-spacing: -0.035em;
  line-height: 1.12;
  margin-top: 2em;
}
.article-body h2 { font-size: 32px; }
.article-body h3 { font-size: 24px; }
.article-body p { margin: 1.05em 0; }
.article-body blockquote {
  margin: 1.4em 0;
  padding: 16px 18px;
  background: var(--fsr-quote);
  border-left: 5px solid var(--fsr-down);
  border-radius: 0 12px 12px 0;
  color: #2c3544;
}
.article-body a { color: var(--fsr-link); text-decoration-thickness: 2px; text-underline-offset: 3px; }
.article-body code {
  font-family: Consolas, Monaco, 'Courier New', monospace;
  font-size: 0.92em;
  background: #e8edf2;
  padding: 2px 5px;
  border-radius: 5px;
}

.uptake-docket {
  max-width: 760px;
  margin: 18px 0 56px 158px;
  padding: 18px 20px;
  border: 1px dashed #aebdca;
  border-radius: 16px;
  background: #f7f9fb;
}
.uptake-docket h2 { font-size: 24px; }
.uptake-docket p { margin: 8px 0 0; color: var(--fsr-muted); }

@media (max-width: 820px) {
  .fsr-premise,
  .fsr-path,
  .collapsed-thread-review {
    grid-template-columns: 1fr;
  }
  .reply-contour,
  .article-contour { display: none; }
  .fsr-path li { grid-template-columns: 1fr; }
  .fsr-post-grid { grid-template-columns: 1fr; }
  .uptake-docket { margin-left: 0; }
}

@media (max-width: 520px) {
  .fsr-home,
  .fsr-article { width: min(100% - 20px, 1120px); }
  .fsr-masthead h1,
  .article-thread-head h1 { letter-spacing: -0.045em; }
  .thread-card-link { grid-template-columns: 46px 1fr; }
  .thread-meta { display: block; }
  .collapsed-thread-review { padding: 18px; }
}