:root {
  color-scheme: light;
  --ink: #161814;
  --muted: #6d7168;
  --paper: #f5f3ec;
  --card: #fffef9;
  --line: #d8d6cd;
  --green: #276749;
  --green-soft: #dce9df;
  --amber: #d87927;
  --shadow: 0 14px 38px rgba(36, 38, 32, 0.07);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 78% 0%, rgba(216, 121, 39, 0.09), transparent 27rem),
    var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

button, input { font: inherit; }

.page-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 58px 0 36px;
}

.masthead {
  display: grid;
  grid-template-columns: 1.45fr 0.75fr;
  gap: 70px;
  align-items: end;
  padding-bottom: 54px;
  border-bottom: 1px solid var(--line);
}

.brand-line {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 26px;
  font-size: 14px;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.signal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 6px var(--green-soft);
}

h1 {
  margin: 0;
  max-width: 700px;
  font-family: Georgia, "Songti SC", "Noto Serif CJK SC", serif;
  font-size: clamp(54px, 8vw, 104px);
  line-height: 0.94;
  letter-spacing: -0.055em;
  font-weight: 600;
}

.intro {
  max-width: 650px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.status-card {
  background: var(--ink);
  color: white;
  border-radius: 22px;
  padding: 26px 28px;
  box-shadow: var(--shadow);
}

.status-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  font-size: 14px;
}
.status-row:last-child { border-bottom: 0; }
.status-row span { color: rgba(255,255,255,.58); }
.status-row strong { text-align: right; }

.controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.role-tabs { display: flex; flex-wrap: wrap; gap: 8px; }
.role-tabs button {
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 999px;
  padding: 9px 15px;
  color: var(--muted);
  cursor: pointer;
}
.role-tabs button:hover, .role-tabs button:focus-visible { border-color: var(--ink); color: var(--ink); }
.role-tabs button.active { background: var(--ink); border-color: var(--ink); color: white; }

.search-box {
  display: flex;
  align-items: center;
  min-width: min(340px, 100%);
  border-bottom: 1px solid var(--ink);
  padding: 8px 0;
  gap: 14px;
}
.search-box span { color: var(--muted); font-size: 13px; }
.search-box input { width: 100%; border: 0; outline: 0; background: transparent; color: var(--ink); }

.feed-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  padding: 54px 0 26px;
}
.eyebrow { color: var(--green); font-size: 12px; font-weight: 800; letter-spacing: .14em; }
.feed-heading h2 { margin: 8px 0 0; font: 600 32px/1.2 Georgia, "Songti SC", serif; }
.feed-heading p { margin: 0; color: var(--muted); }
.trend-heading { padding-top: 58px; }
.updates-heading { margin-top: 28px; border-top: 1px solid var(--line); }

.trend-grid { display: grid; gap: 20px; }
.trend-card {
  position: relative;
  overflow: hidden;
  padding: 34px 36px;
  background: var(--card);
  border: 1px solid rgba(216, 214, 205, 0.9);
  border-radius: 22px;
  box-shadow: 0 3px 0 rgba(36,38,32,.025);
}
.trend-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: linear-gradient(var(--green), var(--amber));
}
.trend-topline { display: flex; flex-wrap: wrap; align-items: center; gap: 9px 14px; color: var(--muted); font-size: 12px; }
.stage-pill { padding: 6px 10px; border-radius: 999px; color: #1d5138; background: var(--green-soft); font-weight: 800; }
.trend-score { color: var(--green); font-weight: 800; }
.signal-count { margin-left: auto; }
.trend-card h3 {
  margin: 23px 0 12px;
  font: 600 clamp(29px, 4vw, 43px)/1.18 Georgia, "Songti SC", serif;
  letter-spacing: -.025em;
}
.trend-thesis { max-width: 930px; margin: 0; color: #34372f; font-size: 18px; line-height: 1.75; }
.trend-lenses {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}
.trend-lenses section { padding: 20px 22px; border-radius: 14px; background: #f1f0e8; }
.trend-lenses span { color: var(--green); font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.trend-lenses p { margin: 9px 0 0; color: #34372f; line-height: 1.7; }
.trend-context {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 28px;
  margin-top: 20px;
}
.trend-context p { margin: 10px 0; color: #4c5047; font-size: 14px; line-height: 1.7; }
.trend-context strong { color: var(--ink); }
.trend-context .caveat { color: #7b532f; }
.evidence-list { margin-top: 20px; padding-top: 17px; border-top: 1px solid var(--line); }
.evidence-list summary { width: fit-content; color: var(--green); cursor: pointer; font-size: 13px; font-weight: 800; }
.evidence-list ul { display: grid; gap: 10px; margin: 16px 0 0; padding: 0; list-style: none; }
.evidence-list li { display: flex; justify-content: space-between; gap: 22px; font-size: 13px; }
.evidence-list a { color: var(--ink); text-decoration: none; }
.evidence-list a:hover { color: var(--green); }
.evidence-list li span { flex: 0 0 auto; color: var(--muted); }
.trend-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 22px; }
.trend-empty {
  padding: 28px 30px;
  border: 1px dashed #b8b6ab;
  border-radius: 16px;
  color: var(--muted);
  line-height: 1.7;
}
.trend-empty p { margin: 0; }

.news-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.news-card {
  display: flex;
  flex-direction: column;
  min-height: 380px;
  padding: 27px;
  background: var(--card);
  border: 1px solid rgba(216, 214, 205, 0.85);
  border-radius: 18px;
  box-shadow: 0 2px 0 rgba(36,38,32,.02);
  transition: transform .18s ease, box-shadow .18s ease;
}
.news-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.card-meta, .role-list, .tag-list { display: flex; flex-wrap: wrap; gap: 7px; align-items: center; }
.card-meta { justify-content: space-between; color: var(--muted); font-size: 12px; }
.score { color: var(--green); font-weight: 750; }
.news-card h3 { margin: 22px 0 14px; font: 600 24px/1.3 Georgia, "Songti SC", serif; }
.summary { margin: 0; line-height: 1.75; color: #34372f; }
.key-points {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: #34372f;
}
.key-points li {
  position: relative;
  padding-left: 19px;
  line-height: 1.65;
}
.key-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
}
.why {
  margin: 22px 0 0;
  padding: 17px 18px;
  background: #f1f0e8;
  border-radius: 12px;
  color: #4c5047;
  font-size: 14px;
  line-height: 1.65;
}
.why strong { color: var(--ink); }
.card-bottom { margin-top: auto; padding-top: 23px; }
.role-pill, .tag-pill, .evidence-pill { padding: 5px 9px; border-radius: 6px; font-size: 12px; }
.role-pill { color: #24583f; background: var(--green-soft); font-weight: 700; }
.tag-pill { color: var(--muted); background: #efeee7; }
.evidence-pill { color: #8a4b13; background: #f7e5d2; font-weight: 700; }
.metric-line { display: flex; flex-wrap: wrap; gap: 8px 14px; margin: -2px 0 16px; color: var(--muted); font-size: 12px; }
.metric-line span { position: relative; }
.metric-line span + span::before { content: "·"; position: absolute; left: -9px; color: #aaa69a; }
.source-link { display: inline-flex; margin-top: 18px; color: var(--ink); text-decoration: none; font-size: 13px; font-weight: 750; }
.source-link:hover { color: var(--green); }

.empty-state { text-align: center; padding: 90px 20px; border: 1px dashed var(--line); border-radius: 18px; }
.empty-state h2 { margin: 12px 0 8px; font-family: Georgia, "Songti SC", serif; }
.empty-state p { color: var(--muted); }
.empty-mark { display: inline-block; font-size: 40px; color: var(--amber); }
code { padding: 3px 7px; border-radius: 5px; background: #e8e6dd; }

footer { display: flex; justify-content: space-between; gap: 24px; margin-top: 60px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }

@media (max-width: 820px) {
  .page-shell { width: min(100% - 28px, 680px); padding-top: 32px; }
  .masthead { grid-template-columns: 1fr; gap: 36px; }
  h1 { font-size: clamp(54px, 18vw, 82px); }
  .controls { align-items: stretch; flex-direction: column; }
  .search-box { width: 100%; }
  .news-grid { grid-template-columns: 1fr; }
  .trend-card { padding: 27px 24px; }
  .trend-lenses, .trend-context { grid-template-columns: 1fr; }
  .signal-count { width: 100%; margin-left: 0; }
  .evidence-list li { align-items: flex-start; flex-direction: column; gap: 4px; }
  .feed-heading { align-items: start; flex-direction: column; gap: 12px; }
  footer { flex-direction: column; }
}