/* ==========================================================================
   ChainBrief.news — Design System
   "Crypto news with context." Wire-service energy, financial-terminal density.
   Type: Inter (body/UI) + JetBrains Mono (timestamps, kickers, metadata)
   Accent: Cyan #06b6d4
   ========================================================================== */

:root {
  --ink: #0a0e14;
  --ink-soft: #1a212c;
  --paper: #ffffff;
  --paper-2: #f6f8fa;
  --paper-3: #eef1f4;
  --line: #dfe3e8;
  --line-strong: #0a0e14;
  --muted: #5b6472;
  --muted-2: #838d99;
  --cyan: #06b6d4;
  --cyan-dark: #0891b2;
  --cyan-ink: #043c47;
  --cyan-tint: #e3fbff;
  --up: #16a34a;
  --down: #dc2626;
  --maxw: 1180px;
  --radius: 3px;
  --ff-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --ff-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--ff-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* -------------------- Ticker strip -------------------- */
.ticker-strip {
  background: var(--ink);
  color: #cdd6e0;
  overflow: hidden;
  white-space: nowrap;
  border-bottom: 1px solid var(--cyan-dark);
  position: relative;
}
.ticker-strip .ticker-label {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  display: flex; align-items: center;
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--ff-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  padding: 0 12px;
  z-index: 2;
}
.ticker-track {
  display: inline-flex;
  align-items: center;
  font-family: var(--ff-mono);
  font-size: 12.5px;
  padding: 7px 0 7px 92px;
  animation: ticker-scroll 38s linear infinite;
  gap: 34px;
}
.ticker-strip:hover .ticker-track { animation-play-state: paused; }
.ticker-item { display: inline-flex; gap: 7px; align-items: baseline; }
.ticker-item .sym { color: #fff; font-weight: 700; }
.ticker-item .px { color: #aab4c0; }
.ticker-item .chg.up { color: #34d399; }
.ticker-item .chg.down { color: #f87171; }
@keyframes ticker-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
  .ticker-track { animation: none; overflow-x: auto; padding-left: 12px; }
}

/* -------------------- Masthead -------------------- */
.masthead {
  border-bottom: 3px solid var(--line-strong);
  background: var(--paper);
}
.masthead-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0 10px;
  gap: 16px;
}
.logo {
  font-family: var(--ff-body);
  font-weight: 800;
  font-size: 26px;
  letter-spacing: -0.03em;
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.logo .accent { color: var(--cyan-dark); }
.masthead-meta {
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--muted);
  text-align: right;
  line-height: 1.4;
}
.masthead-meta .live {
  color: var(--down);
  font-weight: 700;
}
.live-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--down);
  margin-right: 5px;
  animation: pulse 1.6s ease-in-out infinite;
  vertical-align: middle;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.35} }

.mainnav {
  border-top: 1px solid var(--line);
  display: flex;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
}
.mainnav::-webkit-scrollbar { display: none; }
.mainnav a {
  font-family: var(--ff-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .03em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 10px 14px;
  white-space: nowrap;
  border-right: 1px solid var(--line);
  transition: background .12s, color .12s;
}
.mainnav a:first-child { padding-left: 0; }
.mainnav a:hover, .mainnav a.active { color: var(--cyan-dark); background: var(--cyan-tint); }

/* -------------------- Section labels / kickers -------------------- */
.section-label {
  font-family: var(--ff-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--cyan-dark);
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
}
.section-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}
.kicker-pill {
  display: inline-block;
  font-family: var(--ff-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--cyan-dark);
  background: var(--cyan-tint);
  border: 1px solid var(--cyan);
  border-radius: 2px;
  padding: 3px 8px;
}
.dateline {
  font-family: var(--ff-mono);
  font-size: 12px;
  color: var(--muted);
}

/* -------------------- Homepage: hero + wire -------------------- */
.hero-grid {
  display: grid;
  grid-template-columns: 1.7fr 1fr;
  gap: 34px;
  padding: 30px 0 36px;
  border-bottom: 1px solid var(--line);
}
.hero-story .kicker-pill { margin-bottom: 12px; }
.hero-story h1, .hero-story .hl {
  font-size: 38px;
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 800;
  margin: 0 0 14px;
}
.hero-story .dek {
  font-size: 17px;
  color: var(--muted);
  line-height: 1.5;
  margin: 0 0 14px;
}
.byline-row {
  display: flex;
  gap: 10px;
  align-items: center;
  font-family: var(--ff-mono);
  font-size: 12px;
  color: var(--muted-2);
}

.live-wire {
  border-left: 1px solid var(--line);
  padding-left: 28px;
}
.wire-item {
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}
.wire-item:first-child { padding-top: 0; }
.wire-time {
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--cyan-dark);
  font-weight: 700;
  display: block;
  margin-bottom: 4px;
}
.wire-item h3 {
  font-size: 14.5px;
  line-height: 1.35;
  margin: 0;
  font-weight: 700;
}
.wire-item h3 a:hover { color: var(--cyan-dark); }

/* -------------------- Story grid (bordered cards) -------------------- */
.story-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  margin-bottom: 40px;
}
.story-card {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.story-card h3 { font-size: 19px; line-height: 1.28; margin: 0; font-weight: 800; letter-spacing: -.01em; }
.story-card h3 a:hover { color: var(--cyan-dark); }
.story-card p { margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.5; }
.card-meta {
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--muted-2);
  display: flex;
  gap: 10px;
  align-items: center;
}

/* -------------------- Thematic 2-column list -------------------- */
.section-block { padding: 30px 0; border-bottom: 1px solid var(--line); }
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}
.list-item {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--paper-3);
}
.list-item .idx {
  font-family: var(--ff-mono);
  font-size: 12px;
  color: var(--cyan-dark);
  font-weight: 700;
  padding-top: 3px;
}
.list-item h4 { margin: 0 0 4px; font-size: 15.5px; font-weight: 700; line-height: 1.35; }
.list-item h4 a:hover { color: var(--cyan-dark); }
.list-item .meta { font-family: var(--ff-mono); font-size: 11px; color: var(--muted-2); }

/* -------------------- Newsletter strip -------------------- */
.newsletter-strip {
  background: var(--ink);
  color: #fff;
  border-left: 4px solid var(--cyan);
  padding: 26px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin: 36px 0;
}
.newsletter-strip h3 { margin: 0 0 4px; font-size: 19px; }
.newsletter-strip p { margin: 0; color: #aab4c0; font-size: 13.5px; font-family: var(--ff-mono); }
.nl-form { display: flex; gap: 8px; flex-wrap: wrap; }
.nl-form input[type=email] {
  font-family: var(--ff-mono);
  font-size: 13px;
  padding: 11px 12px;
  border: 1px solid #35404d;
  background: #10161f;
  color: #fff;
  border-radius: 2px;
  min-width: 230px;
}
.nl-form button {
  font-family: var(--ff-mono);
  font-weight: 700;
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: .05em;
  padding: 11px 18px;
  border: 1px solid var(--cyan);
  background: var(--cyan);
  color: var(--ink);
  border-radius: 2px;
  cursor: pointer;
}
.nl-form button:hover { background: var(--cyan-dark); border-color: var(--cyan-dark); }

/* -------------------- Footer -------------------- */
footer.site-footer {
  border-top: 3px solid var(--line-strong);
  background: var(--paper-2);
  padding: 34px 0 24px;
  margin-top: 20px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}
.footer-grid h5 {
  font-family: var(--ff-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--muted-2);
  margin: 0 0 10px;
}
.footer-grid a { display: block; font-size: 13.5px; color: var(--ink-soft); padding: 4px 0; }
.footer-grid a:hover { color: var(--cyan-dark); }
.footer-grid p { font-size: 13px; color: var(--muted); line-height: 1.55; margin: 0 0 10px; }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 16px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--muted-2);
}

/* -------------------- Article page -------------------- */
.article-head {
  max-width: 780px;
  margin: 0 auto;
  padding: 34px 20px 10px;
}
.article-head h1 {
  font-size: 36px;
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 800;
  margin: 14px 0 14px;
}
.article-head .dek {
  font-size: 18px;
  color: var(--muted);
  line-height: 1.55;
  margin: 0 0 18px;
}
.article-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-family: var(--ff-mono);
  font-size: 12px;
  color: var(--muted);
}
.share-row { display: flex; gap: 10px; }
.share-row a {
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 5px 10px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.share-row a:hover { border-color: var(--cyan); color: var(--cyan-dark); }

.article-body {
  max-width: 780px;
  margin: 0 auto;
  padding: 28px 20px 10px;
  font-size: 18px;
  line-height: 1.75;
}
.article-body p { margin: 0 0 22px; }
.article-body h2 {
  font-size: 25px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 40px 0 16px;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 30px 0 12px;
}
.article-body ul, .article-body ol { margin: 0 0 22px; padding-left: 22px; }
.article-body li { margin-bottom: 9px; }
.article-body strong { font-weight: 700; }
.article-body blockquote {
  margin: 30px 0;
  padding: 4px 0 4px 22px;
  border-left: 3px solid var(--cyan);
  font-size: 21px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink-soft);
  font-style: normal;
}
.article-body figure { margin: 30px 0; }
.article-body figcaption {
  font-family: var(--ff-mono);
  font-size: 12px;
  color: var(--muted-2);
  margin-top: 8px;
}

.context-box {
  max-width: 780px;
  margin: 8px auto 34px;
  padding: 0 20px;
}
.context-box .inner {
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  background: var(--paper-2);
  padding: 18px 20px;
  border-radius: 2px;
}
.context-box .label {
  font-family: var(--ff-mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--cyan-dark);
  margin-bottom: 8px;
  display: block;
}
.context-box p { margin: 0 0 10px; font-size: 15px; line-height: 1.6; color: var(--ink-soft); }
.context-box a.deeper {
  font-family: var(--ff-mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--cyan-dark);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.context-box a.deeper::after { content: "→"; }

.disclosure {
  max-width: 780px;
  margin: 0 auto 30px;
  padding: 0 20px;
  font-family: var(--ff-mono);
  font-size: 11.5px;
  color: var(--muted-2);
  line-height: 1.6;
}

.related-strip {
  border-top: 3px solid var(--line-strong);
  background: var(--paper-2);
  padding: 30px 0 10px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.related-grid .rcard h4 { font-size: 15.5px; line-height: 1.35; margin: 6px 0 0; font-weight: 700; }
.related-grid .rcard h4 a:hover { color: var(--cyan-dark); }

/* -------------------- Brief format -------------------- */
.brief-body { max-width: 740px; }

/* -------------------- Utility -------------------- */
.badge-hot { color: var(--down); }
.badge-new { color: var(--cyan-dark); }
.badge-watch { color: var(--muted); }
.notfa {
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--muted-2);
}

/* -------------------- Responsive -------------------- */
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 28px; padding: 22px 0 28px; }
  .live-wire { border-left: none; border-top: 1px solid var(--line); padding-left: 0; padding-top: 20px; }
  .hero-story h1, .hero-story .hl { font-size: 29px; }
  .story-grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; gap: 4px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .article-head h1 { font-size: 27px; }
  .article-body { font-size: 17px; }
  .article-body blockquote { font-size: 19px; }
  .masthead-top { flex-wrap: wrap; }
  .logo { font-size: 22px; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 16px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .newsletter-strip { padding: 22px 18px; }
  .nl-form input[type=email] { min-width: 0; flex: 1; }
  .masthead-meta { display: none; }
  .article-head, .article-body, .context-box, .disclosure { padding-left: 16px; padding-right: 16px; }
}