/* Concept B — The Brief */

:root {
  --paper: #FAFAF7;
  --paper-2: #FFFFFF;
  --ink: #14140F;
  --ink-2: #45433D;
  --ink-3: #7A776E;
  --line: #E6E3DA;
  --line-2: #D6D2C4;
  --red: #CC2200;
  --red-soft: rgba(204, 34, 0, 0.08);
  --serif: 'Source Serif 4', 'Source Serif Pro', 'Tiempos', Georgia, serif;
  --sans: 'Inter', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--paper); color: var(--ink); }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--red); text-decoration: none; border-bottom: 1px solid rgba(204, 34, 0, 0.25); }
a:hover { border-bottom-color: var(--red); }

/* ===== Masthead ===== */
.masthead { padding-top: 22px; background: var(--paper); }
.mast-inner {
  max-width: 1180px; margin: 0 auto;
  padding: 0 40px 16px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 14px; border: 0; }
.alpha-mark { flex: 0 0 40px; }
.brand-name {
  font-family: var(--serif); font-weight: 700;
  font-size: 22px; color: var(--ink); letter-spacing: -0.005em;
}
.brand-tag {
  font-family: var(--sans); font-size: 11.5px;
  color: var(--ink-3); letter-spacing: 0.06em; text-transform: uppercase;
  margin-top: 2px;
}
.mastnav { display: flex; gap: 28px; align-items: center; }
.mastnav a {
  font-size: 14px; color: var(--ink-2); border: 0;
  font-weight: 500;
}
.mastnav a:hover { color: var(--red); }
.mastnav a.cta {
  background: var(--ink); color: var(--paper);
  padding: 8px 16px; border-radius: 0;
}
.mastnav a.cta:hover { background: var(--red); color: #fff; }
.mast-rule {
  height: 1px; background: var(--line-2);
  max-width: 1180px; margin: 0 auto;
}

.kicker {
  font-family: var(--mono); font-size: 11px;
  color: var(--red); letter-spacing: 0.18em; text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 14px;
}

/* ===== Hero ===== */
.hero {
  max-width: 1180px; margin: 0 auto;
  padding: 56px 40px 56px;
  display: grid; grid-template-columns: 1.7fr 1fr; gap: 56px;
}
.hero-meta { margin-bottom: 6px; }
.hero-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 56px; line-height: 1.04;
  margin: 0 0 18px;
  letter-spacing: -0.022em;
  color: var(--ink);
}
.hero-deck {
  font-family: var(--serif); font-weight: 400;
  font-size: 23px; line-height: 1.42; color: var(--ink-2);
  margin: 0 0 24px;
  letter-spacing: -0.005em;
}
.hero-byline {
  font-size: 13px; color: var(--ink-3);
  display: flex; gap: 8px; flex-wrap: wrap; align-items: center;
}
.dot { color: var(--line-2); }
.tags { color: var(--ink-3); }
.tags .tag {
  display: inline-block;
  background: var(--red-soft); color: var(--red);
  padding: 2px 8px; margin-right: 6px; border-radius: 2px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.06em;
}

.hero-side {
  display: flex; flex-direction: column; gap: 20px;
}
.side-card {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-top: 3px solid var(--red);
  padding: 22px 22px 18px;
}
.side-card-tag {
  font-family: var(--mono); font-size: 10.5px;
  color: var(--red); letter-spacing: 0.16em; text-transform: uppercase;
  font-weight: 700; margin-bottom: 10px;
}
.side-card-name {
  font-family: var(--serif); font-weight: 700;
  font-size: 22px; line-height: 1.18; margin: 0 0 6px;
  color: var(--ink);
}
.side-card-sub {
  font-size: 13px; color: var(--ink-3); margin-bottom: 18px;
}
.side-numerics {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 14px 0;
}
.side-numerics > div { text-align: center; border-right: 1px solid var(--line); }
.side-numerics > div:last-child { border-right: 0; }
.sn-label {
  font-family: var(--mono); font-size: 10px;
  color: var(--ink-3); letter-spacing: 0.14em; text-transform: uppercase;
}
.sn-value {
  font-family: var(--serif); font-weight: 700;
  font-size: 28px; line-height: 1; margin-top: 6px;
  font-variant-numeric: tabular-nums; color: var(--ink);
}
.sn-value.accent { color: var(--red); }
.side-card-meta {
  font-size: 12px; color: var(--ink-3);
  margin-top: 14px; line-height: 1.5;
}
.side-card-meta span { color: var(--ink-2); font-weight: 500; }

.side-stats {
  display: grid; gap: 4px;
  font-family: var(--sans);
}
.side-stats > div {
  display: flex; align-items: baseline; gap: 14px;
  border-top: 1px solid var(--line);
  padding: 10px 0;
}
.side-stats > div:first-child { border-top: 0; padding-top: 4px; }
.ss-num {
  font-family: var(--serif); font-weight: 700;
  font-size: 24px; line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  min-width: 110px;
}
.ss-num.accent { color: var(--red); }
.ss-lab {
  font-size: 13px; color: var(--ink-3);
}

/* ===== Article ===== */
.article {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 64px 40px 72px;
}
.prose {
  max-width: 720px; margin: 0 auto;
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.66;
  color: var(--ink);
}
.prose p { margin: 0 0 18px; }
.prose h2 {
  font-family: var(--serif); font-weight: 700;
  font-size: 28px; line-height: 1.18;
  margin: 48px 0 14px;
  letter-spacing: -0.012em;
}
.prose h2::before {
  content: ""; display: block;
  width: 38px; height: 2px; background: var(--red);
  margin-bottom: 18px;
}
.prose h3 {
  font-family: var(--sans); font-weight: 700;
  font-size: 13px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--red); margin: 32px 0 8px;
}
.prose strong { color: var(--ink); font-weight: 600; }
.prose ul { padding-left: 22px; margin: 6px 0 18px; }
.prose li { margin: 4px 0; }
.prose .signature {
  font-family: var(--sans); font-weight: 600;
  color: var(--ink); margin-top: 24px;
}

/* Article kicker (auto-promoted from "Issue #001 — Launch Issue — May 2026" line) */
.prose .article-kicker {
  font-family: var(--mono); font-size: 11px;
  color: var(--red); letter-spacing: 0.18em;
  text-transform: uppercase; font-weight: 700;
  margin: 0 0 36px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

/* h4 subsections (auto-promoted from bold-only paragraphs like "Identity & Sponsorship") */
.prose h4.subsection {
  font-family: var(--sans); font-weight: 600;
  font-size: 13px; letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin: 28px 0 12px;
  padding-left: 10px;
  border-left: 2px solid var(--red);
}

/* Pull quote: every 3rd <p> after first 5 — handled in JS by adding .pullquote
   class to the strongest sentence. Keeping it static here for design preview. */
.prose .pull {
  font-family: var(--serif); font-weight: 600;
  font-size: 26px; line-height: 1.32;
  border-left: 3px solid var(--red);
  padding: 6px 0 6px 22px;
  margin: 28px 0;
  color: var(--ink);
}

/* ===== Sections (cards) ===== */
.sections { max-width: 1180px; margin: 0 auto; padding: 72px 40px 24px; }
.sec-h {
  font-family: var(--serif); font-weight: 700;
  font-size: 32px; margin: 0 0 8px; letter-spacing: -0.015em;
}
.sec-deck {
  font-family: var(--serif); font-size: 17px;
  color: var(--ink-2); margin: 0 0 28px;
  max-width: 720px;
}
.cards {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.card {
  background: var(--paper-2);
  padding: 26px 28px 30px;
  border: 0;
  display: block;
  position: relative;
  transition: background 120ms ease;
}
.card::after {
  content: "→";
  position: absolute;
  top: 26px; right: 24px;
  font-family: var(--sans);
  font-size: 18px; color: var(--ink-3);
  transition: transform 160ms ease, color 160ms ease;
}
.card:hover { background: var(--red-soft); }
.card:hover::after { color: var(--red); transform: translateX(4px); }
.card-tag {
  font-family: var(--mono); font-size: 10.5px;
  color: var(--red); letter-spacing: 0.16em; text-transform: uppercase;
  font-weight: 700; margin-bottom: 10px;
}
.card h3 {
  font-family: var(--serif); font-weight: 700;
  font-size: 22px; line-height: 1.2;
  margin: 0 0 8px; color: var(--ink);
  letter-spacing: -0.005em;
}
.card p {
  font-size: 14.5px; line-height: 1.55;
  color: var(--ink-2); margin: 0;
}

/* ===== Archive ===== */
.archive { max-width: 1180px; margin: 0 auto; padding: 56px 40px 24px; }
.arc-list {
  list-style: none; padding: 0; margin: 0 0 18px;
  border-top: 1px solid var(--line-2);
}
.arc-foot {
  font-family: var(--serif); font-size: 15px;
  color: var(--ink-3); font-style: italic;
  max-width: 600px; margin: 12px 0 0;
}
.arc-list li {
  display: grid; grid-template-columns: 120px 1fr 100px;
  gap: 24px; align-items: baseline;
  padding: 18px 0; border-bottom: 1px solid var(--line);
}
.arc-list li.muted { color: var(--ink-3); }
.arc-list li.muted .arc-title { color: var(--ink-3); border: 0; cursor: default; }
.arc-date {
  font-family: var(--mono); font-size: 12px; color: var(--ink-3);
  letter-spacing: 0.04em;
}
.arc-title {
  font-family: var(--serif); font-weight: 600;
  font-size: 19px; color: var(--ink); border: 0;
}
.arc-title:hover { color: var(--red); }
.arc-tag {
  font-family: var(--mono); font-size: 10.5px;
  color: var(--ink-3); letter-spacing: 0.14em; text-transform: uppercase;
  text-align: right;
}

/* ===== Methodology ===== */
.methodology {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 72px 40px;
  margin-top: 48px;
}
.meth-grid {
  max-width: 1180px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px;
}
.methodology h2 {
  font-family: var(--serif); font-weight: 700;
  font-size: 36px; line-height: 1.18; margin: 0 0 8px;
  letter-spacing: -0.015em;
}
.meth-body p {
  font-family: var(--serif); font-size: 18px; line-height: 1.6;
  color: var(--ink); margin: 0 0 24px;
}
.weights {
  list-style: none; padding: 0; margin: 0;
  border-top: 1px solid var(--line-2);
  font-family: var(--mono); font-size: 13px;
}
.weights li {
  display: flex; justify-content: space-between;
  padding: 12px 0; border-bottom: 1px solid var(--line);
}
.weights li > span:first-child { color: var(--ink-2); letter-spacing: 0.02em; }
.w-num { color: var(--red); font-weight: 700; font-variant-numeric: tabular-nums; }

/* ===== Subscribe ===== */
.subscribe {
  padding: 88px 40px;
  text-align: center;
  background: linear-gradient(to bottom, var(--paper) 0%, var(--paper-2) 100%);
}
.sub-inner { max-width: 620px; margin: 0 auto; }
.subscribe h2 {
  font-family: var(--serif); font-weight: 700;
  font-size: 42px; line-height: 1.08;
  margin: 0 0 14px; letter-spacing: -0.02em;
}
.subscribe p { color: var(--ink-2); font-size: 18px; margin: 0 0 28px; line-height: 1.5; }
.sub-form {
  display: flex; gap: 0;
  border: 1px solid var(--line-2);
  background: var(--paper-2);
  transition: border-color 120ms ease;
}
.sub-form:focus-within { border-color: var(--red); }
.sub-form input {
  flex: 1; border: 0; background: transparent;
  padding: 16px 18px; font-family: var(--sans); font-size: 16px;
  color: var(--ink); min-width: 0;
}
.sub-form input:focus { outline: 0; }
.sub-form input::placeholder { color: var(--ink-3); }
.sub-form button {
  background: var(--ink); color: var(--paper);
  border: 0; padding: 16px 26px;
  font-family: var(--sans); font-weight: 600; font-size: 14px;
  cursor: pointer; letter-spacing: 0.04em;
  white-space: nowrap;
  transition: background 120ms ease;
}
.sub-form button:hover { background: var(--red); }
.sub-form button.is-success {
  background: var(--red); cursor: default;
}
.sub-foot {
  margin-top: 16px; color: var(--ink-3); font-size: 13px;
}

/* ===== About ===== */
.about {
  border-top: 1px solid var(--line);
  padding: 64px 40px;
  background: var(--paper);
}
.about-inner { max-width: 880px; margin: 0 auto; }
.about h2 {
  font-family: var(--serif); font-weight: 700;
  font-size: 30px; line-height: 1.22; margin: 0 0 18px;
  letter-spacing: -0.012em;
}
.about p {
  font-family: var(--serif); font-size: 19px; line-height: 1.6;
  color: var(--ink-2); margin: 0;
}

/* ===== Footer ===== */
.foot {
  background: var(--ink); color: var(--paper);
  padding: 44px 40px 56px;
}
.foot-inner {
  max-width: 1180px; margin: 0 auto;
  display: grid; grid-template-columns: 1.5fr 1fr 2fr; gap: 48px;
  align-items: start;
}
.foot-brand { display: flex; align-items: center; gap: 14px; }
.fb-name {
  font-family: var(--serif); font-weight: 700; font-size: 18px;
  white-space: nowrap;
}
.fb-tag {
  font-family: var(--sans); font-size: 11px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: rgba(250, 250, 247, 0.55);
  margin-top: 2px;
}
.foot-links { display: flex; flex-direction: column; gap: 8px; font-size: 13px; }
.foot-links a {
  color: rgba(250, 250, 247, 0.7); border: 0;
}
.foot-links a:hover { color: #fff; }
.foot-disc {
  font-size: 12px; line-height: 1.6;
  color: rgba(250, 250, 247, 0.55);
}
.foot-copy {
  margin-top: 14px; padding-top: 14px;
  border-top: 1px solid rgba(250, 250, 247, 0.12);
  font-size: 11px; letter-spacing: 0.04em;
  color: rgba(250, 250, 247, 0.45);
}

/* ===========================================================
   MOBILE RESPONSIVE
   Breakpoints:
     ≤960px  — collapse hero + side card to single column
     ≤768px  — tablet: tighter type, simplified nav
     ≤480px  — phone: smallest typography, full-width cards
   =========================================================== */

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; gap: 36px; padding: 40px 32px; }
  .hero-title { font-size: 46px; }
  .hero-side { flex-direction: column; }
  .meth-grid { grid-template-columns: 1fr; gap: 28px; }
  .cards { grid-template-columns: 1fr; }
  .foot-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .foot-disc { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  /* Masthead: stack brand + nav */
  .mast-inner { flex-direction: column; align-items: flex-start; gap: 18px; padding: 0 24px 16px; }
  .mastnav { flex-wrap: wrap; gap: 16px 20px; width: 100%; }
  .mastnav a { font-size: 13px; }
  .mastnav a.cta { padding: 6px 12px; font-size: 13px; }

  /* Hero: tighter, no large left margin */
  .hero { padding: 32px 24px; }
  .hero-title { font-size: 38px; line-height: 1.06; letter-spacing: -0.018em; }
  .hero-deck { font-size: 19px; }
  .hero-byline { font-size: 12px; gap: 6px; }

  /* Side card: same width as hero */
  .side-card, .side-stats { padding: 18px; }
  .side-card-name { font-size: 20px; }
  .sn-value { font-size: 24px; }
  .ss-num { font-size: 20px; min-width: 80px; }

  /* Article body: tighter padding + slightly smaller type */
  .article { padding: 40px 24px 48px; }
  .prose { font-size: 17.5px; line-height: 1.65; }
  .prose h2 { font-size: 24px; margin: 36px 0 12px; }
  .prose .pull { font-size: 22px; padding-left: 18px; }

  /* Sections / Methodology / Archive */
  .sections, .archive { padding: 48px 24px 24px; }
  .sec-h { font-size: 26px; }
  .methodology { padding: 48px 24px; }
  .methodology h2 { font-size: 28px; }
  .meth-body p { font-size: 16px; }

  /* Subscribe */
  .subscribe { padding: 56px 24px; }
  .subscribe h2 { font-size: 32px; }
  .subscribe p { font-size: 16px; }

  /* About */
  .about { padding: 48px 24px; }
  .about h2 { font-size: 24px; }
  .about p { font-size: 17px; }

  /* Footer */
  .foot { padding: 36px 24px 44px; }
  .foot-inner { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 480px) {
  .brand-name { font-size: 19px; }
  .brand-tag { font-size: 10.5px; }
  .mastnav { gap: 12px 16px; }
  .mastnav a { font-size: 12.5px; }

  .hero { padding: 24px 20px 32px; }
  .hero-title { font-size: 30px; line-height: 1.08; }
  .hero-deck { font-size: 17px; line-height: 1.45; }

  .side-numerics { padding: 12px 0; }
  .sn-value { font-size: 22px; }
  .sn-label { font-size: 9px; }

  .article { padding: 32px 20px 40px; }
  .prose { font-size: 16.5px; }
  .prose h2 { font-size: 22px; }
  .prose .pull { font-size: 19px; }

  .sections, .archive { padding: 40px 20px 20px; }
  .sec-h { font-size: 22px; }
  .sec-deck { font-size: 15px; }
  .card { padding: 22px 22px 26px; }
  .card h3 { font-size: 19px; }
  .card::after { top: 22px; right: 20px; font-size: 16px; }

  .methodology { padding: 40px 20px; }
  .methodology h2 { font-size: 24px; }
  .meth-body p { font-size: 15.5px; }

  .subscribe { padding: 44px 20px; }
  .subscribe h2 { font-size: 26px; }
  .sub-form { flex-direction: column; }
  .sub-form button { padding: 14px; }

  .about { padding: 40px 20px; }
  .about h2 { font-size: 21px; }
  .about p { font-size: 16px; }

  .foot { padding: 32px 20px 40px; }
}