/* ==========================================================================
   SiliconPlans — network umbrella site.
   Identity: structural, infrastructural, cool. The connective layer above
   seven properties — belongs to none of them. Near-black ground, a single
   signal-cyan accent (circuitry / data), all-sans precise typography.
   Reads as a control panel for a network, not a publication.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@400;500;600;700;800&family=Archivo+Expanded:wght@600;700;800&display=swap');

:root {
  /* ground — near-black, structural */
  --ink-0:        #0A0C0F;   /* deepest — page ground                      */
  --ink-1:        #11141A;   /* raised surface — tiles, panels             */
  --ink-2:        #181C24;   /* hover / lifted surface                     */
  --hairline:     #262B36;   /* borders, dividers                          */

  /* text */
  --text-0:       #F2F4F8;   /* primary — headings, near-white             */
  --text-1:       #AEB6C4;   /* secondary — body                          */
  --text-2:       #6B7480;   /* tertiary — labels, meta                    */

  /* signal — the one accent. cool cyan, neutral between all properties.    */
  --signal:       #38C7D4;   /* primary accent                             */
  --signal-dim:   #1E7E88;   /* muted accent — borders, rules              */
  --signal-glow:  rgba(56,199,212,0.14);  /* wash behind hovers            */

  /* tier marker — extended tier uses a quieter steel tone */
  --steel:        #7D8BA0;

  --font-sans:    'Archivo', system-ui, -apple-system, sans-serif;
  --font-wide:    'Archivo Expanded', 'Archivo', system-ui, sans-serif;

  --measure:      1180px;
  --gutter:       clamp(20px, 5vw, 64px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }

body {
  background: var(--ink-0);
  color: var(--text-1);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ---- shared wrap ---- */
.sp-wrap {
  max-width: var(--measure);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* ==========================================================================
   MASTHEAD — thin, fixed-feel, structural
   ========================================================================== */
.sp-head {
  border-bottom: 1px solid var(--hairline);
  background: var(--ink-0);
}
.sp-head__inner {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 20px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
/* wordmark — precise, technical. "Silicon" light, "Plans" weighted. */
.sp-logo {
  font-family: var(--font-wide);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--text-0);
  display: flex;
  align-items: center;
  gap: 10px;
}
/* the mark — a small bracketed node glyph */
.sp-logo__mark {
  width: 22px; height: 22px;
  flex-shrink: 0;
}
.sp-logo__mark rect,
.sp-logo__mark line { stroke: var(--signal); }
.sp-logo__word { color: var(--text-0); }

.sp-head__tag {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-2);
}
@media (max-width: 620px) { .sp-head__tag { display: none; } }

/* ==========================================================================
   HERO
   ========================================================================== */
.sp-hero {
  padding: clamp(56px, 9vw, 120px) 0 clamp(40px, 6vw, 72px);
  border-bottom: 1px solid var(--hairline);
  position: relative;
  overflow: hidden;
}
/* faint grid wash — the "network" texture, very low contrast */
.sp-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--hairline) 1px, transparent 1px),
    linear-gradient(90deg, var(--hairline) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.25;
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 70% 20%, #000 0%, transparent 75%);
          mask-image: radial-gradient(ellipse 70% 80% at 70% 20%, #000 0%, transparent 75%);
  pointer-events: none;
}
.sp-hero__inner { position: relative; }
.sp-hero__eyebrow {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: 22px;
}
.sp-hero h1 {
  font-family: var(--font-wide);
  font-weight: 800;
  font-size: clamp(2.1rem, 5.4vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.015em;
  color: var(--text-0);
  max-width: 16ch;
}
/* the tricolon — each term picks up the signal colour */
.sp-hero h1 em {
  font-style: normal;
  color: var(--signal);
}
.sp-hero__sub {
  margin-top: 26px;
  font-size: clamp(1rem, 1.6vw, 1.18rem);
  line-height: 1.65;
  color: var(--text-1);
  max-width: 60ch;
}
.sp-hero__sub strong { color: var(--text-0); font-weight: 600; }

/* ==========================================================================
   SECTION SCAFFOLD
   ========================================================================== */
.sp-section { padding: clamp(48px, 7vw, 88px) 0; }
.sp-section--line { border-bottom: 1px solid var(--hairline); }

.sp-section__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: clamp(28px, 4vw, 44px);
}
.sp-section__num {
  font-family: var(--font-wide);
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--signal-dim);
  letter-spacing: 0.1em;
}
.sp-section__title {
  font-family: var(--font-wide);
  font-weight: 700;
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  letter-spacing: -0.01em;
  color: var(--text-0);
}
.sp-section__note {
  margin-left: auto;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-2);
}
@media (max-width: 640px) { .sp-section__note { display: none; } }

/* ==========================================================================
   NETWORK GRID — the core deliverable. Two tiers: Core (4) + Extended (3).
   ========================================================================== */
.sp-tier-label {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 20px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-2);
}
.sp-tier-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--hairline);
}
.sp-tier-label--core::before {
  content: "";
  width: 8px; height: 8px;
  background: var(--signal);
  border-radius: 50%;
  flex-shrink: 0;
}
.sp-tier-label--ext::before {
  content: "";
  width: 8px; height: 8px;
  border: 1.5px solid var(--steel);
  border-radius: 50%;
  flex-shrink: 0;
}

.sp-grid {
  display: grid;
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}
.sp-grid--core { grid-template-columns: repeat(4, 1fr); }
.sp-grid--ext  { grid-template-columns: repeat(3, 1fr); margin-top: 40px; }
@media (max-width: 900px) {
  .sp-grid--core, .sp-grid--ext { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 540px) {
  .sp-grid--core, .sp-grid--ext { grid-template-columns: 1fr; }
}

/* a property tile */
.sp-tile {
  background: var(--ink-1);
  padding: clamp(22px, 2.6vw, 30px);
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 184px;
  position: relative;
  transition: background 0.25s ease, transform 0.25s ease;
}
.sp-tile:hover { background: var(--ink-2); }
.sp-tile__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
/* the property short-code — monospace-feel index tag */
.sp-tile__code {
  font-family: var(--font-wide);
  font-weight: 700;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--signal-dim);
}
.sp-tile__arrow {
  width: 18px; height: 18px;
  color: var(--text-2);
  transition: color 0.25s ease, transform 0.25s ease;
}
.sp-tile:hover .sp-tile__arrow {
  color: var(--signal);
  transform: translate(2px, -2px);
}
.sp-tile__name {
  font-family: var(--font-wide);
  font-weight: 700;
  font-size: 1.16rem;
  letter-spacing: -0.005em;
  color: var(--text-0);
  margin-top: 4px;
}
.sp-tile__desc {
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--text-1);
}
.sp-tile__layer {
  margin-top: auto;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--text-2);
  padding-top: 12px;
}
/* hover accent rail on the left edge */
.sp-tile::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--signal);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.25s ease;
}
.sp-tile:hover::before { transform: scaleY(1); }

/* "launching" state — a property not yet live */
.sp-tile--soon { cursor: default; }
.sp-tile--soon:hover { background: var(--ink-1); }
.sp-tile--soon:hover::before { transform: scaleY(0); }
.sp-tile--soon .sp-tile__name { color: var(--text-1); }
.sp-tile--soon .sp-tile__arrow { display: none; }
.sp-tile__soon-tag {
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-0);
  background: var(--steel);
  padding: 3px 8px;
  border-radius: 3px;
}

/* ==========================================================================
   ABOUT
   ========================================================================== */
.sp-about__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(28px, 5vw, 64px);
}
@media (max-width: 760px) { .sp-about__grid { grid-template-columns: 1fr; } }
.sp-about p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-1);
  margin-bottom: 1.1em;
}
.sp-about p strong { color: var(--text-0); font-weight: 600; }
.sp-about__aside {
  border-left: 2px solid var(--signal-dim);
  padding-left: 22px;
}
.sp-about__aside h3 {
  font-family: var(--font-wide);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: 12px;
}
.sp-about__aside p { font-size: 0.92rem; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.sp-foot {
  border-top: 1px solid var(--hairline);
  padding: clamp(40px, 6vw, 64px) 0 40px;
}
.sp-foot__line {
  font-family: var(--font-wide);
  font-weight: 700;
  font-size: clamp(1.1rem, 2.4vw, 1.6rem);
  color: var(--text-0);
  letter-spacing: -0.01em;
  margin-bottom: 28px;
}
.sp-foot__line span { color: var(--signal); }
.sp-foot__row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  align-items: center;
  border-top: 1px solid var(--hairline);
  padding-top: 24px;
}
.sp-foot__row a {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-2);
  transition: color 0.2s ease;
}
.sp-foot__row a:hover { color: var(--signal); }
.sp-foot__copy {
  margin-left: auto;
  font-size: 0.76rem;
  color: var(--text-2);
  letter-spacing: 0.03em;
}
@media (max-width: 560px) { .sp-foot__copy { margin-left: 0; width: 100%; } }

.sp-hero--bleed::before { display: none; }

/* ==========================================================================
   FULL-BLEED HERO — Option B, done right: the image is edge-to-edge and the
   tricolon rides on top under a gradient scrim. The image IS the statement.
   --ar 21:9 for the source image.
   ========================================================================== */
.sp-hero--bleed {
  padding: 0;
  border-bottom: 1px solid var(--hairline);
  position: relative;
  min-height: clamp(440px, 64vh, 680px);
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
/* the image layer */
.sp-hero__img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
/* placeholder shown until the real image is dropped in */
.sp-hero__img-slot {
  position: absolute;
  inset: 0;
  background-color: var(--ink-1);
  background-image:
    linear-gradient(var(--hairline) 1px, transparent 1px),
    linear-gradient(90deg, var(--hairline) 1px, transparent 1px);
  background-size: 48px 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.sp-hero__img-slot span {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-2);
}
.sp-hero__img-slot span:last-child {
  font-weight: 400;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--signal-dim);
}
/* gradient scrim — darker at the bottom where the text sits */
.sp-hero__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10,12,15,0.30) 0%,
    rgba(10,12,15,0.55) 55%,
    rgba(10,12,15,0.92) 100%);
}
/* the overlaid text */
.sp-hero__inner {
  position: relative;
  width: 100%;
  padding-top: clamp(56px, 9vw, 110px);
  padding-bottom: clamp(40px, 6vw, 64px);
}

/* ==========================================================================
   SATELLITES — supporting properties, grouped by their parent hub.
   Deliberately lighter weight than Core/Extended tiles: these orbit a
   parent, they are not peers of it.
   ========================================================================== */
.sp-sats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}
@media (max-width: 720px) { .sp-sats { grid-template-columns: 1fr; } }

.sp-sat-group {
  background: var(--ink-1);
  padding: clamp(20px, 2.6vw, 28px);
}
/* the parent line — names the hub these orbit */
.sp-sat-group__parent {
  display: flex;
  align-items: baseline;
  gap: 9px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--hairline);
}
.sp-sat-group__parent-code {
  font-family: var(--font-wide);
  font-weight: 700;
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  color: var(--signal-dim);
}
.sp-sat-group__parent-name {
  font-family: var(--font-wide);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text-0);
}
.sp-sat-group__parent-rel {
  margin-left: auto;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-2);
}
/* the satellites themselves — compact rows */
.sp-sat {
  display: block;
  padding: 9px 0;
  border-bottom: 1px solid var(--hairline);
  transition: padding-left 0.2s ease;
}
.sp-sat:last-child { border-bottom: none; }
.sp-sat:hover { padding-left: 6px; }
.sp-sat__name {
  font-weight: 600;
  font-size: 0.94rem;
  color: var(--text-0);
}
.sp-sat:hover .sp-sat__name { color: var(--signal); }
.sp-sat__desc {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.5;
}
.sp-sat--soon .sp-sat__name { color: var(--text-1); }
.sp-sat--soon:hover { padding-left: 0; }
.sp-sat--soon:hover .sp-sat__name { color: var(--text-1); }
.sp-sat__soon {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
  margin-left: 8px;
}