:root {
  --ink: #1b221e;
  --ink-soft: #3e4a44;
  --muted: #5d685f;
  --paper: #e2ddd4;
  --paper-2: #ece8e0;
  --panel: #f3efe8;
  --line: #c6bfb3;
  --led: #1f6b4a;
  --led-dim: #d5eadc;
  --asphalt: #24302a;
  --accent: #3358d4;
  --dc: #9a3412;
  --dc-bg: #f6e4dc;
  --broadband: #1d4f8c;
  --broadband-bg: #dde8f4;
  --unclear: #7a5c12;
  --unclear-bg: #f3ead0;
  --display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --sans: "Source Sans 3", "Source Sans Pro", "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; }
body {
  min-height: 100vh;
  font-family: var(--sans);
  color: var(--ink);
  background-color: #e8e4db;
  background-image: linear-gradient(180deg, #eeeae1 0%, #e4dfd5 100%);
  line-height: 1.55;
}

a { color: var(--led); }
a:hover { text-decoration: underline; }

.site {
  width: min(1040px, calc(100% - 2rem));
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem 0 0.6rem;
}
.brand {
  font-family: var(--display);
  font-optical-sizing: auto;
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
}
.brand:hover { text-decoration: none; color: var(--ink); }
.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.1rem;
  font-size: 0.95rem;
}
.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] { color: var(--ink); }

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1.25rem 2rem;
  align-items: center;
  min-height: 0;
  padding: 0.75rem 0 1.25rem;
}
.hero h1 {
  font-family: var(--display);
  font-optical-sizing: auto;
  font-weight: 600;
  font-size: clamp(2.35rem, 5.2vw, 3.5rem);
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin: 0 0 0.75rem;
}
.hero .standfirst {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 28rem;
  margin: 0 0 1.5rem;
}
.cta {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  color: #f6f4ef;
  background: var(--asphalt);
  border: 1px solid color-mix(in srgb, var(--asphalt) 80%, black);
  padding: 0.8rem 1.2rem;
  border-radius: 3px;
}
.cta:hover { text-decoration: none; filter: brightness(1.08); }
.cta-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero-visual img,
.hero-visual svg {
  width: 118%;
  max-width: none;
  height: auto;
  display: block;
  margin: 0;
}
.hero-caption {
  margin: 0.5rem 0 0;
  font-size: 1rem;
  line-height: 1.4;
  color: var(--muted);
  text-align: center;
  width: 118%;
}

.band {
  background: color-mix(in srgb, var(--panel) 78%, transparent);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section {
  padding: 2rem 0;
}
.section h2 {
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: clamp(1.35rem, 2.6vw, 1.75rem);
  margin: 0 0 0.7rem;
  line-height: 1.2;
}
.section p { margin: 0 0 1rem; color: var(--ink-soft); max-width: 40rem; }
.section p:last-child { margin-bottom: 0; }
.price {
  font-weight: 700;
  font-size: clamp(2.1rem, 4vw, 2.9rem);
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 0.2rem 0 0.65rem;
}
.price span {
  font-size: 0.4em;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--muted);
}
.sell-points {
  margin: 0 0 1.15rem;
  padding-left: 1.2rem;
  max-width: 40rem;
  color: var(--ink-soft);
}
.sell-points li { margin: 0 0 0.5rem; }

.page-head {
  padding: 2.2rem 0 1.15rem;
}
.page-head h1 {
  font-weight: 700;
  letter-spacing: -0.025em;
  font-size: clamp(1.85rem, 4vw, 2.55rem);
  line-height: 1.12;
  margin: 0 0 0.65rem;
}
.lede {
  margin: 0 0 0.7rem;
  color: var(--ink-soft);
  font-size: 1.08rem;
  max-width: 40rem;
}
.lede:last-child { margin-bottom: 0; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 1.15rem 1.2rem;
  margin: 0 0 2.5rem;
}
label {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}
.row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}
input[type="text"] {
  flex: 1 1 220px;
  min-width: 0;
  font: inherit;
  font-family: var(--mono);
  font-size: 0.95rem;
  padding: 0.72rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  color: var(--ink);
}
input[type="text"]:focus {
  outline: 2px solid color-mix(in srgb, var(--led) 40%, white);
  border-color: var(--led);
}
button {
  appearance: none;
  border: none;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  padding: 0.72rem 1rem;
  border-radius: 3px;
  background: var(--asphalt);
  color: #f6f4ef;
}
button.secondary {
  background: var(--paper-2);
  color: var(--ink);
  border: 1px solid var(--line);
}
button:disabled { opacity: 0.55; cursor: not-allowed; }
.hint {
  margin: 0.7rem 0 0;
  font-size: 0.88rem;
  color: var(--muted);
}
code, pre { font-family: var(--mono); }
code {
  font-size: 0.86em;
  background: color-mix(in srgb, var(--paper-2) 80%, white);
  padding: 0.08em 0.3em;
}

.result {
  border-radius: 3px;
  border: 1px solid var(--line);
  padding: 1.1rem 1.2rem;
  margin-top: 1rem;
  background: var(--panel);
}
.result.mobile { background: var(--led-dim); border-color: color-mix(in srgb, var(--led) 40%, var(--line)); }
.result.datacentre { background: var(--dc-bg); border-color: color-mix(in srgb, var(--dc) 40%, var(--line)); }
.result.broadband { background: var(--broadband-bg); border-color: color-mix(in srgb, var(--broadband) 40%, var(--line)); }
.result.unclear { background: var(--unclear-bg); border-color: color-mix(in srgb, var(--unclear) 40%, var(--line)); }
.result h2 {
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  margin: 0 0 0.45rem;
}
.result p { margin: 0 0 0.75rem; }
.result-copy { line-height: 1.45; color: var(--ink-soft); }
.result .tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.result.mobile .tag { color: var(--led); }
.result.datacentre .tag { color: var(--dc); }
.result.broadband .tag { color: var(--broadband); }
.result.unclear .tag { color: var(--unclear); }
.meta {
  font-family: var(--mono);
  font-size: 0.85rem;
  display: grid;
  gap: 0.25rem;
  margin: 0.75rem 0;
}
.err {
  color: var(--dc);
  font-size: 0.92rem;
  margin-top: 0.75rem;
}
.hidden { display: none !important; }

.article {
  padding: 0 0 3.5rem;
  max-width: 40.5rem;
}
.article h2 {
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.3rem;
  margin: 2.1rem 0 0.6rem;
}
.article p, .article li {
  color: var(--ink-soft);
  font-size: 1.02rem;
}
.article ul { padding-left: 1.15rem; }
.article .soft-cta {
  margin-top: 2.2rem;
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--line);
  background: var(--panel);
}

.site-footer {
  margin-top: 1rem;
  padding: 1.6rem 0 2.4rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}
.site-footer p { margin: 0 0 0.55rem; max-width: 40rem; }
.site-footer strong { color: var(--ink); }
.foot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.1rem;
  margin-top: 0.85rem;
}
.foot-links a { color: var(--ink-soft); text-decoration: none; }
.foot-links a:hover { color: var(--ink); }

@media (max-width: 820px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 0.5rem 0 1.25rem;
  }
  .hero-visual { max-width: none; }
  .hero-visual img,
  .hero-visual svg {
    width: 100%;
    margin: 0;
  }
  .hero-caption { width: 100%; }
}