/* =========================================================================
   Why Arca page
   Framework-focused: bands table, buyer-lens comparison, gains grid.
   ========================================================================= */

/* --- Why hero ------------------------------------------------------- */
.why-hero {
  position: relative; overflow: hidden;
  background: var(--void);
  padding: 140px 0 110px;
}
.why-hero__glow {
  position: absolute; top: -240px; left: 50%; transform: translateX(-50%);
  width: 1100px; height: 820px;
  background: radial-gradient(ellipse at center, rgba(0,196,161,0.16), transparent 62%);
  pointer-events: none;
}
.why-hero__inner { position: relative; max-width: 820px; }
.why-hero__h1 {
  font-family: var(--font-display);
  font-size: clamp(48px, 6vw, 88px);
  line-height: 1.05; letter-spacing: -0.022em;
  color: var(--parchment);
  margin: 20px 0 24px;
}
.why-hero__h1 em { font-style: italic; color: var(--arc-teal); }
.why-hero__sub {
  font-size: 18px; line-height: 1.7;
  color: var(--parchment); opacity: 0.82;
  max-width: 640px; margin-bottom: 36px;
}
.why-hero__actions {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}

/* --- Promises (parchment) ------------------------------------------- */
.promises {
  background: var(--parchment);
  color: var(--on-parch);
  padding: 100px 0 110px;
}
.promises__head { max-width: 640px; margin-bottom: 56px; }
.promises__grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.promise {
  background: #fff;
  border: 1px solid var(--parchment-300);
  border-radius: var(--r-lg);
  padding: 28px 28px 30px;
  display: flex; flex-direction: column;
}
.promise__head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--parchment-300);
}
.promise__ord {
  font-family: var(--font-display); font-style: italic;
  font-size: 28px; color: var(--arc-teal-text); line-height: 1;
}
.promise__tag {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--on-parch);
  background: var(--parchment-200);
  padding: 5px 10px; border-radius: var(--r-sm);
}
.promise__title {
  font-family: var(--font-display);
  font-size: 22px; line-height: 1.22;
  color: var(--on-parch); margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.promise__body {
  font-size: 15px; line-height: 1.7;
  color: var(--muted-parch); flex: 1;
  margin-bottom: 22px;
}
.promise__meta {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted-parch);
  padding-top: 16px;
  border-top: 1px solid var(--parchment-300);
}
.promise__pip {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--arc-teal);
}

/* --- Framework (void, bands table) ---------------------------------- */
.framework {
  background: var(--void);
  color: var(--on-void);
  padding: 110px 0;
  border-top: 1px solid rgba(240, 237, 232, 0.06);
}
.framework__head { max-width: 680px; margin-bottom: 56px; }

/* Report preview */
.framework__report {
  margin: 0 0 72px;
  max-width: 1080px;
}
.framework__report-frame {
  border: 1px solid rgba(240, 237, 232, 0.10);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: #fff;
  box-shadow:
    0 1px 0 rgba(240, 237, 232, 0.04) inset,
    0 40px 80px -20px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(0, 196, 161, 0.12);
}
.framework__report-chrome {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  background: #F7F4EF;
  border-bottom: 1px solid var(--parchment-300);
}
.framework__report-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--parchment-300);
}
.framework__report-dot:nth-child(1) { background: #E5A5A0; }
.framework__report-dot:nth-child(2) { background: #E8CB8A; }
.framework__report-dot:nth-child(3) { background: #8FCFB9; }
.framework__report-url {
  margin-left: 12px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.08em; color: var(--muted-parch);
}
.framework__report-img {
  display: block; width: 100%; height: auto;
}
.framework__report-cap {
  margin-top: 14px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted-void);
}

/* Spectrum bar */
.framework__spectrum {
  margin: 0 0 28px;
}
.framework__spectrum-bar {
  display: grid; grid-template-columns: repeat(4, 1fr);
  height: 6px; border-radius: 3px; overflow: hidden;
  box-shadow: 0 0 0 1px rgba(240, 237, 232, 0.08);
}
.framework__spectrum-seg { display: block; height: 100%; }
.framework__spectrum-seg--critical   { background: var(--ember); }
.framework__spectrum-seg--serious    { background: var(--orange); }
.framework__spectrum-seg--acceptable { background: rgba(240, 237, 232, 0.35); }
.framework__spectrum-seg--defensible { background: var(--arc-teal); }
.framework__spectrum-ticks {
  display: grid; grid-template-columns: repeat(4, 1fr);
  margin-top: 10px;
}
.framework__spectrum-ticks span {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted-void);
}

/* Tier cards */
.framework__cards {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.tier-card {
  position: relative;
  background: rgba(240, 237, 232, 0.025);
  border: 1px solid rgba(240, 237, 232, 0.08);
  border-radius: var(--r-lg);
  padding: 28px 24px 26px;
  display: flex; flex-direction: column;
  min-height: 280px;
  transition: background .2s, border-color .2s, transform .2s;
  overflow: hidden;
}
.tier-card:hover {
  background: rgba(240, 237, 232, 0.04);
  border-color: rgba(240, 237, 232, 0.14);
  transform: translateY(-2px);
}
.tier-card__accent {
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
}
.tier-card--critical   .tier-card__accent { background: var(--ember); }
.tier-card--serious    .tier-card__accent { background: var(--orange); }
.tier-card--acceptable .tier-card__accent { background: rgba(240, 237, 232, 0.35); }
.tier-card--defensible .tier-card__accent { background: var(--arc-teal); }

.tier-card__head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 22px;
}
.tier-card__ord {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.14em; color: var(--muted-void);
}
.tier-card__dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--arc-teal);
}
.tier-card--critical   .tier-card__dot { background: var(--ember);   box-shadow: 0 0 0 4px rgba(178, 58, 27, 0.18); }
.tier-card--serious    .tier-card__dot { background: var(--orange); box-shadow: 0 0 0 4px rgba(217, 119, 6, 0.16); }
.tier-card--acceptable .tier-card__dot { background: var(--parchment); opacity: 0.7; box-shadow: 0 0 0 4px rgba(240,237,232,0.1); }
.tier-card--defensible .tier-card__dot { background: var(--arc-teal); box-shadow: 0 0 0 4px rgba(0,196,161,0.14); }

.tier-card__tier {
  font-family: var(--font-display); font-style: italic;
  font-size: 30px; line-height: 1.05; letter-spacing: -0.02em;
  color: var(--parchment);
  margin-bottom: 10px;
}
.tier-card__label {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--arc-teal);
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px dashed rgba(240, 237, 232, 0.12);
}
.tier-card--critical .tier-card__label { color: var(--ember); }
.tier-card--serious  .tier-card__label { color: var(--orange); }
.tier-card--acceptable .tier-card__label { color: rgba(240, 237, 232, 0.6); }
.tier-card--defensible .tier-card__label { color: var(--arc-teal); }
.tier-card__body {
  font-size: 14.5px; line-height: 1.65;
  color: var(--parchment); opacity: 0.75;
  flex: 1;
  margin-bottom: 18px;
}
.tier-card__action {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--parchment); opacity: 0.9;
  padding-top: 16px;
  border-top: 1px solid rgba(240, 237, 232, 0.08);
}
.tier-card__arrow {
  font-family: var(--font-sans); font-size: 14px;
  color: var(--arc-teal);
}

/* --- Gains (parchment) ---------------------------------------------- */
.gains {
  background: var(--parchment);
  color: var(--on-parch);
  padding: 100px 0 110px;
}
.gains__head { max-width: 560px; margin-bottom: 56px; }
.gains__grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  background: var(--parchment-300);
  border: 1px solid var(--parchment-300);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.gain {
  background: var(--parchment);
  padding: 32px 32px 36px;
}
.gain__num {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.14em; color: var(--arc-teal-text);
  margin-bottom: 14px;
}
.gain__title {
  font-family: var(--font-display);
  font-size: 24px; color: var(--on-parch);
  line-height: 1.2; letter-spacing: -0.01em;
  margin-bottom: 12px;
}
.gain__body {
  font-size: 15.5px; line-height: 1.7;
  color: var(--muted-parch); max-width: 460px;
}

/* --- Buyer lens (void, two columns) --------------------------------- */
.lens {
  background: var(--void);
  color: var(--on-void);
  padding: 110px 0 120px;
}
.lens__head { max-width: 720px; margin-bottom: 56px; }
.lens__grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.lens__col {
  border: 1px solid rgba(240, 237, 232, 0.08);
  border-radius: var(--r-lg);
  padding: 32px 32px 36px;
  background: var(--void-2);
}
.lens__col--buyer {
  border-color: var(--teal-border);
  background: linear-gradient(180deg, rgba(0,196,161,0.06), rgba(0,196,161,0.02));
}
.lens__col-head {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted-void);
  padding-bottom: 18px; margin-bottom: 22px;
  border-bottom: 1px solid rgba(240, 237, 232, 0.08);
}
.lens__col--buyer .lens__col-head { color: var(--arc-teal); border-bottom-color: var(--teal-border); }
.lens__q {
  font-family: var(--font-display); font-style: italic;
  font-size: 20px; line-height: 1.4;
  color: var(--parchment); opacity: 0.7;
  margin-bottom: 20px;
  padding-left: 18px;
  border-left: 2px solid rgba(240, 237, 232, 0.12);
}
.lens__q--buyer {
  opacity: 1;
  border-left-color: var(--arc-teal);
}
.lens__col-foot {
  font-size: 14.5px; line-height: 1.7;
  color: var(--parchment); opacity: 0.6;
  margin-top: 28px; padding-top: 22px;
  border-top: 1px solid rgba(240, 237, 232, 0.08);
}
.lens__col--buyer .lens__col-foot {
  color: var(--parchment); opacity: 0.85;
  border-top-color: var(--teal-border);
}

/* --- Responsive ----------------------------------------------------- */
@media (max-width: 1100px) {
  .framework__cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 960px) {
  .promises__grid { grid-template-columns: 1fr; }
  .gains__grid { grid-template-columns: 1fr; }
  .lens__grid { grid-template-columns: 1fr; }
  .framework__cards { grid-template-columns: 1fr; }
  .framework__spectrum-ticks span { font-size: 9.5px; }
}
@media (max-width: 600px) {
  .why-hero { padding: 96px 0 80px; }
}