/* 4Sight Construction Consulting
   Visual system: the drawing sheet. */

:root {
  --sheet:      #F2F4F6;
  --sheet-deep: #E6EAEE;
  --ink:        #1F2933;
  --navy:       #1F4E79;
  --slate:      #3C4650;
  --rule:       #C9D2DA;
  --rule-soft:  #DDE3E8;
  --redline:    #B5322A;
  --muted:      #5B6670;

  --measure: 34rem;
  --gutter: clamp(1.25rem, 5vw, 4.5rem);
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  background: var(--sheet);
  color: var(--ink);
  font-family: "Source Serif 4", Georgia, "Times New Roman", serif;
  font-size: 1.0625rem;
  line-height: 1.68;
  font-feature-settings: "kern" 1;
}

/* the drawing border: a rule down the left margin */
.sheet {
  position: relative;
  max-width: 78rem;
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.sheet::before {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  left: calc(var(--gutter) - 1.25rem);
  width: 1px;
  background: var(--rule);
}
@media (max-width: 40rem) { .sheet::before { display: none; } }

/* ---------- type ---------- */
h1, h2, h3, .ui {
  font-family: Archivo, "Helvetica Neue", Arial, sans-serif;
  font-variation-settings: normal;
}

h1 {
  font-size: clamp(2.1rem, 5.6vw, 3.9rem);
  line-height: 1.04;
  letter-spacing: -0.025em;
  font-weight: 700;
  margin: 0 0 1.5rem;
  max-width: 19ch;
  color: var(--ink);
}
h2 {
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
  font-weight: 700;
  margin: 0 0 1rem;
  color: var(--navy);
}
h3 {
  font-size: 1.1rem;
  letter-spacing: -0.005em;
  font-weight: 600;
  margin: 0 0 .5rem;
  color: var(--slate);
}
p { margin: 0 0 1.15rem; max-width: var(--measure); }
a { color: var(--navy); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--redline); }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--navy);
  outline-offset: 3px;
}

.lead { font-size: 1.22rem; line-height: 1.6; color: var(--slate); }

/* ---------- header ---------- */
.masthead {
  border-bottom: 1px solid var(--rule);
  background: var(--sheet);
}
.masthead-in {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; padding: 1.15rem 0;
}
.logo img { display: block; height: 54px; width: auto; }
nav ul { display: flex; gap: 1.6rem; list-style: none; margin: 0; padding: 0; }
nav a {
  font-family: Archivo, Arial, sans-serif;
  font-size: .82rem; font-weight: 600;
  letter-spacing: .04em;
  color: var(--slate);
  text-decoration: none;
}
nav a:hover, nav a[aria-current="page"] { color: var(--navy); text-decoration: underline; text-underline-offset: 5px; }
@media (max-width: 34rem) {
  .masthead-in { flex-direction: column; align-items: flex-start; gap: .85rem; }
  nav ul { gap: 1.1rem; }
}

/* ---------- hero ---------- */
.hero { padding: clamp(3.5rem, 9vw, 7rem) 0 clamp(2.5rem, 6vw, 4.5rem); }
.hero h1 { max-width: 17ch; }
.hero .lead { max-width: 40rem; }

.standfirst {
  font-family: Archivo, Arial, sans-serif;
  font-size: .78rem; font-weight: 600;
  letter-spacing: .09em;
  color: var(--redline);
  margin: 0 0 1.1rem;
}

/* ---------- sections ---------- */
section { padding: clamp(2.5rem, 6vw, 4rem) 0; border-top: 1px solid var(--rule-soft); }
section:first-of-type { border-top: 0; }

.two-col {
  display: grid;
  grid-template-columns: minmax(0, 15rem) minmax(0, 1fr);
  gap: clamp(1.25rem, 4vw, 3.5rem);
  align-items: start;
}
@media (max-width: 46rem) { .two-col { grid-template-columns: 1fr; gap: 1rem; } }
.two-col h2 { margin-top: .15rem; }

.beats { display: grid; gap: 2rem; }
.beat h3 { color: var(--navy); }
.beat p { margin-bottom: 0; }

/* ---------- article list ---------- */
.pieces { list-style: none; margin: 0; padding: 0; }
.pieces li { border-top: 1px solid var(--rule-soft); }
.pieces li:last-child { border-bottom: 1px solid var(--rule-soft); }
.piece {
  display: grid;
  grid-template-columns: 7.5rem minmax(0,1fr);
  gap: clamp(1rem, 3vw, 2.5rem);
  padding: 1.6rem 0;
  text-decoration: none;
  color: inherit;
}
.piece:hover h3 { color: var(--redline); }
.piece .meta {
  font-family: Archivo, Arial, sans-serif;
  font-size: .76rem; font-weight: 600; letter-spacing: .05em;
  color: var(--muted); padding-top: .3rem;
}
.piece h3 { font-size: 1.28rem; color: var(--navy); margin-bottom: .35rem; }
.piece p { margin: 0; color: var(--slate); font-size: 1rem; }
@media (max-width: 40rem) {
  .piece { grid-template-columns: 1fr; gap: .4rem; }
}

/* ---------- article body ---------- */
.article { padding: clamp(2.5rem, 6vw, 4rem) 0 2rem; }
.article h1 { max-width: 22ch; margin-bottom: 1.2rem; }
.article-meta {
  font-family: Archivo, Arial, sans-serif;
  font-size: .78rem; font-weight: 600; letter-spacing: .05em;
  color: var(--muted);
  padding-bottom: 1.6rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 2rem;
}
.summary {
  border-left: 3px solid var(--navy);
  padding: .1rem 0 .1rem 1.15rem;
  margin: 0 0 2.4rem;
  max-width: var(--measure);
}
.summary p { font-weight: 600; color: var(--slate); margin: 0; }
.article h2 { margin-top: 2.6rem; }
.pull {
  border-left: 3px solid var(--redline);
  padding: .25rem 0 .25rem 1.15rem;
  margin: 2rem 0;
  max-width: var(--measure);
}
.pull p {
  font-family: Archivo, Arial, sans-serif;
  font-size: 1.16rem; line-height: 1.42; font-weight: 600;
  color: var(--navy); margin: 0;
}

/* ---------- subscribe ---------- */
.subscribe { background: var(--sheet-deep); border-top: 1px solid var(--rule); }
.subscribe .inner { padding-block: clamp(2.25rem, 5vw, 3.25rem); }
.subscribe h2 { margin-bottom: .6rem; }
.btn {
  display: inline-block;
  font-family: Archivo, Arial, sans-serif;
  font-size: .9rem; font-weight: 700; letter-spacing: .01em;
  background: var(--navy); color: #fff;
  padding: .8rem 1.5rem;
  text-decoration: none;
  border: 1px solid var(--navy);
  margin-top: .5rem;
}
.btn:hover { background: var(--redline); border-color: var(--redline); color: #fff; }

/* ---------- title block ---------- */
footer { border-top: 2px solid var(--navy); background: var(--sheet); }
.titleblock {
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  border-left: 1px solid var(--rule);
  font-family: Archivo, Arial, sans-serif;
}
.tb {
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: .85rem 1rem 1rem;
}
.tb .k { font-size: .66rem; font-weight: 600; letter-spacing: .1em; color: var(--muted); display: block; margin-bottom: .3rem; }
.tb .v { font-size: .9rem; font-weight: 600; color: var(--slate); line-height: 1.35; }
.tb a { color: var(--navy); text-decoration: none; }
.tb a:hover { text-decoration: underline; }
.tb-wide { grid-column: span 2; }
@media (max-width: 46rem) {
  .titleblock { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .tb-wide { grid-column: span 2; }
}
@media (max-width: 26rem) {
  .titleblock { grid-template-columns: 1fr; }
  .tb-wide { grid-column: span 1; }
}
.colophon {
  padding-block: 1.1rem 2rem;
  font-family: Archivo, Arial, sans-serif;
  font-size: .74rem; color: var(--muted);
}
.colophon p { max-width: none; margin: 0; }

.back {
  font-family: Archivo, Arial, sans-serif;
  font-size: .8rem; font-weight: 600; letter-spacing: .04em;
  text-decoration: none; display: inline-block; margin-bottom: 2rem;
}