/* ============================================================
   TECH TACTICS — Editorial / Broadsheet variant
   Warm paper, ink, brand blue. Fraunces display serif,
   thick rules, big numerals, asymmetric print composition.
   ============================================================ */

:root {
  --paper: #f4f1e9;
  --paper-2: #ece7db;
  --ink: #16130d;
  --ink-soft: #5b5346;
  --blue: #1e75a6;
  --blue-deep: #17587f;
  --line: rgba(22, 19, 13, 0.16);
  --line-2: rgba(22, 19, 13, 0.34);

  --serif: "Fraunces", Georgia, serif;
  --sans: "Hanken Grotesk", system-ui, sans-serif;
  --mono: "Spline Sans Mono", monospace;

  --pad: clamp(1.25rem, 5vw, 5.5rem);
  --maxw: 1200px;
}

* , *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
em { font-style: italic; }
svg { display: block; }
::selection { background: var(--blue); color: var(--paper); }

.mono {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* Paper grain */
.paper {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.4'/%3E%3C/svg%3E");
  opacity: 0.035; mix-blend-mode: multiply;
}

.rule { display: block; height: 2px; background: var(--ink); }

/* ---------- Masthead ---------- */
.masthead {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: 1rem var(--pad);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--ink);
}
.masthead__brand { display: flex; align-items: center; gap: 0.6rem; font-family: var(--serif); font-weight: 600; font-size: 1.2rem; letter-spacing: -0.01em; }
.masthead__brand svg { width: 1.4rem; height: 1.4rem; color: var(--blue); }
.masthead__nav { display: flex; gap: 1.8rem; }
.masthead__nav a { color: var(--ink-soft); transition: color 0.2s; }
.masthead__nav a:hover { color: var(--blue); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--sans); font-weight: 600; font-size: 0.95rem;
  padding: 0.7rem 1.2rem; border: 2px solid var(--ink);
  border-radius: 0; cursor: pointer; transition: background 0.2s, color 0.2s, transform 0.2s;
}
.btn svg { width: 1.05em; height: 1.05em; transition: transform 0.2s; }
.btn:hover svg { transform: translateX(4px); }
.btn--ink { background: var(--ink); color: var(--paper); }
.btn--ink:hover { background: var(--blue); border-color: var(--blue); }
.btn--line { background: transparent; color: var(--ink); }
.btn--line:hover { background: var(--ink); color: var(--paper); }
.btn--lg { padding: 0.9rem 1.5rem; font-size: 1rem; }
.btn--xl { padding: 1.1rem 2rem; font-size: 1.1rem; }

/* ---------- Container rhythm ---------- */
main { position: relative; z-index: 2; }
.section { max-width: var(--maxw); margin: 0 auto; padding: clamp(4rem, 9vw, 8rem) var(--pad); }

/* ---------- Hero ---------- */
.hero { max-width: var(--maxw); margin: 0 auto; padding: clamp(3rem, 7vw, 6rem) var(--pad) clamp(2rem, 5vw, 4rem); }
.hero__eyebrow { display: flex; align-items: center; gap: 1.2rem; margin-bottom: clamp(1.5rem, 4vw, 3rem); }
.hero__eyebrow .rule { flex: 0 0 clamp(30px, 8vw, 90px); }
.hero__issue { margin-left: auto; }
.hero__title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.9rem, 9.2vw, 8rem);
  line-height: 0.98;
  letter-spacing: -0.025em;
  font-optical-sizing: auto;
}
.hero__title .line { display: block; overflow: hidden; }
.hero__title .line__in { display: inline-block; will-change: transform; }
.hero__title em { font-style: italic; color: var(--blue); font-weight: 400; }
.hero__foot {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(1.5rem, 5vw, 4rem);
  margin-top: clamp(2rem, 5vw, 3.5rem);
  padding-top: clamp(1.5rem, 3vw, 2.5rem);
  border-top: 1px solid var(--line);
}
.hero__lede { font-size: clamp(1.05rem, 1.6vw, 1.3rem); color: var(--ink-soft); max-width: 42ch; }
.hero__lede em { color: var(--ink); font-style: italic; }
.hero__cta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.9rem; align-content: start; }
.hero__note { flex-basis: 100%; margin-top: 0.4rem; }

/* ---------- Running head strip ---------- */
.strip {
  border-top: 2px solid var(--ink); border-bottom: 2px solid var(--ink);
  background: var(--blue); color: var(--paper);
  overflow: hidden; padding: 0.55rem 0;
}
.strip__track { display: flex; width: max-content; will-change: transform; }
.strip__track span { font-family: var(--serif); font-style: italic; font-size: 1.1rem; white-space: nowrap; }

/* ---------- Section head ---------- */
.section { border-top: 2px solid var(--ink); }
.hero + .strip + .section { border-top: none; }
.sec-head {
  display: grid; grid-template-columns: auto 1fr; gap: clamp(1.2rem, 4vw, 3rem);
  align-items: start; margin-bottom: clamp(2.5rem, 6vw, 4.5rem);
}
.sec-num {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(2.5rem, 7vw, 5.5rem); line-height: 0.8;
  color: transparent; -webkit-text-stroke: 1.5px var(--blue);
}
.sec-title {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(1.5rem, 3.6vw, 2.9rem); line-height: 1.08;
  letter-spacing: -0.015em; max-width: 24ch;
}
.sec-title em { font-style: italic; color: var(--blue); font-weight: 400; }

/* ---------- Payoff ---------- */
.payoff { display: grid; grid-template-columns: repeat(3, 1fr); }
.payoff__item { padding: clamp(1.2rem, 2.5vw, 2rem) clamp(1.2rem, 2.5vw, 2rem) 0.5rem; border-left: 1px solid var(--line); }
.payoff__item:first-child { border-left: none; padding-left: 0; }
.payoff__num {
  display: block; font-family: var(--serif); font-weight: 500;
  font-size: clamp(2.6rem, 6vw, 4.6rem); line-height: 1; color: var(--blue);
  margin-bottom: 1rem; letter-spacing: -0.02em;
}
.payoff__item p { color: var(--ink-soft); max-width: 28ch; }
.payoff__item em { color: var(--ink); font-style: italic; }

/* ---------- Pipeline ---------- */
.pipeline { list-style: none; }
.pipeline__row {
  display: grid; grid-template-columns: clamp(3rem, 8vw, 6rem) 1fr; gap: clamp(1rem, 3vw, 2.5rem);
  padding: clamp(1.4rem, 3vw, 2.2rem) 0;
  border-top: 1px solid var(--line);
  align-items: baseline;
  transition: background 0.25s;
}
.pipeline__row:first-child { border-top: none; }
.pipeline__row:hover { background: var(--paper-2); }
.pipeline__n {
  font-family: var(--serif); font-weight: 400; font-style: italic;
  font-size: clamp(1.6rem, 4vw, 3rem); color: var(--blue); line-height: 1;
}
.pipeline__body { max-width: 62ch; }
.pipeline__stage { display: block; margin-bottom: 0.5rem; color: var(--blue); }
.pipeline__body h3 { font-family: var(--serif); font-weight: 500; font-size: clamp(1.3rem, 2.6vw, 2rem); line-height: 1.12; margin-bottom: 0.5rem; letter-spacing: -0.01em; }
.pipeline__body p { color: var(--ink-soft); }
.pipeline__body em { color: var(--ink); font-style: italic; }

/* ---------- Build ---------- */
.build { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.build__item {
  padding: clamp(1.6rem, 3vw, 2.4rem);
  border-top: 2px solid var(--ink); border-left: 1px solid var(--line);
  transition: background 0.25s;
}
.build__item:nth-child(odd) { border-left: none; }
.build__item:hover { background: var(--paper-2); }
.build__tag { display: block; color: var(--blue); margin-bottom: 1.2rem; }
.build__item h3 { font-family: var(--serif); font-weight: 500; font-size: clamp(1.4rem, 2.8vw, 2.1rem); margin-bottom: 0.7rem; letter-spacing: -0.01em; }
.build__item p { color: var(--ink-soft); max-width: 46ch; }

/* ---------- Creed (inverted blue block) ---------- */
.creed {
  background: var(--blue); color: var(--paper);
  border-top: 2px solid var(--ink); border-bottom: 2px solid var(--ink);
  padding: clamp(4rem, 9vw, 8rem) var(--pad);
}
.creed__text {
  max-width: var(--maxw); margin: 0 auto;
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.6rem, 4.2vw, 3.4rem); line-height: 1.18;
  letter-spacing: -0.015em; max-width: 22ch;
}
.creed__text em { font-style: italic; color: var(--paper); font-weight: 500; }
.creed__text { max-width: 26ch; }

/* ---------- Start ---------- */
.start__title { max-width: 20ch; }
.start__sub { font-size: clamp(1.05rem, 1.6vw, 1.3rem); color: var(--ink-soft); max-width: 54ch; margin: 0 0 2.5rem; }
.start__sub em { color: var(--ink); font-style: italic; }
.start__cta { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; margin-bottom: 1.5rem; }
.start__note { color: var(--ink-soft); }

/* ---------- Colophon (footer) ---------- */
.colophon {
  position: relative; z-index: 2;
  border-top: 2px solid var(--ink);
  padding: 2.5rem var(--pad);
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap;
}
.colophon__mark { font-family: var(--serif); font-weight: 600; font-size: 1.6rem; }
.colophon__meta { display: flex; flex-direction: column; gap: 0.3rem; text-align: right; }
.colophon__meta a:hover { color: var(--blue); }

/* ---------- Reveal ---------- */
.reveal { opacity: 1; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .masthead__nav { display: none; }
  .hero__foot { grid-template-columns: 1fr; }
  .payoff { grid-template-columns: 1fr; }
  .payoff__item { border-left: none; border-top: 1px solid var(--line); padding-left: 0; }
  .payoff__item:first-child { border-top: none; }
  .build { grid-template-columns: 1fr; }
  .build__item { border-left: none; }
  .build__item:first-child { border-top: 2px solid var(--ink); }
  .sec-head { grid-template-columns: 1fr; gap: 0.8rem; }
  .colophon { flex-direction: column; align-items: flex-start; }
  .colophon__meta { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}