/* =========================================================================
   STUDIO NINE — APPROACH PAGE
   The Growth Lifecycle methodology — the differentiator.
   ========================================================================= */

.s9-page-hero {
  padding-top: calc(var(--s9-header-h) + clamp(4rem, 8vw, 8rem));
  padding-bottom: clamp(3rem, 6vw, 6rem);
}
.s9-page-hero__eyebrow { margin-bottom: var(--s9-space-4); }
.s9-page-hero__title {
  font-family: var(--s9-font-display);
  font-weight: 700;
  font-size: clamp(3rem, 9vw, 8.5rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  max-width: 14ch;
  padding-block: 0.08em;
}
.s9-page-hero__lead {
  font-size: var(--s9-size-xl);
  line-height: 1.45;
  color: var(--s9-fg-mute);
  max-width: 60ch;
  margin-top: clamp(2rem, 4vw, 3rem);
}

.s9-page-hero__meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--s9-gutter);
  border-top: 1px solid var(--s9-line);
  margin-top: clamp(3rem, 6vw, 6rem);
  padding-top: var(--s9-space-5);
}
@media (max-width: 760px) {
  .s9-page-hero__meta { grid-template-columns: repeat(2, 1fr); }
}
.s9-page-hero__meta dt {
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--s9-mute);
  margin-bottom: var(--s9-space-2);
}
.s9-page-hero__meta dd {
  font-size: var(--s9-size-base);
  color: var(--s9-fg);
  line-height: 1.5;
}

/* =========================================================================
   LIFECYCLE WHEEL — interactive radial visualization of the 6 stages.
   Desktop: circular wheel with content hub in the center.
   Mobile (<760px): degrades to horizontal scrollable pills + content below.
   ========================================================================= */
.s9-lifecycle {
  padding-block: clamp(5rem, 12vw, 12rem);
  border-top: 1px solid var(--s9-line);
}
.s9-lifecycle__head {
  text-align: center;
  margin-bottom: clamp(3rem, 6vw, 5rem);
  max-width: 760px;
  margin-inline: auto;
}
.s9-lifecycle__title {
  font-family: var(--s9-font-display);
  font-weight: 600;
  font-size: clamp(2rem, 5vw, 3.75rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  padding-block: 0.04em;
  margin-top: var(--s9-space-3);
}
.s9-lifecycle__title em {
  font-family: var(--s9-font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--s9-accent-text);
}
.s9-lifecycle__sub {
  margin-top: var(--s9-space-3);
  font-size: var(--s9-size-lg);
  line-height: 1.5;
  color: var(--s9-fg-mute);
  max-width: 56ch;
  margin-inline: auto;
}

/* Wheel — square aspect, sized to fit viewport.
   Sizing model:
   - --s9-wheel-size   : actual rendered width of the wheel
   - --s9-node-size    : diameter of each stage node
   - --s9-wheel-radius : distance from center to each node's centre.
     Computed so nodes sit flush against the perimeter (with a small inset),
     guaranteeing they never overlap the hub text in the middle. */
.s9-lifecycle__stage-wrap {
  display: flex;
  justify-content: center;
}
.s9-lifecycle__wheel {
  --s9-wheel-size: min(720px, 92vw);
  --s9-node-size: clamp(76px, 10vw, 108px);
  --s9-wheel-radius: calc((var(--s9-wheel-size) - var(--s9-node-size)) / 2 - 6px);
  position: relative;
  width: var(--s9-wheel-size);
  aspect-ratio: 1;
  color: var(--s9-fg);
}

/* Soft inner disk — visually defines the hub area and quiets the bg */
.s9-lifecycle__wheel::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: calc(var(--s9-wheel-size) - var(--s9-node-size) * 2 - 24px);
  height: calc(var(--s9-wheel-size) - var(--s9-node-size) * 2 - 24px);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle at 50% 50%, var(--s9-bg-2) 0%, var(--s9-bg-2) 60%, transparent 100%);
  opacity: 0.85;
  pointer-events: none;
  z-index: 0;
}

/* SVG ring */
.s9-lifecycle__ring {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg); /* start from top */
  z-index: 1;
}
.s9-lifecycle__ring-arc {
  transition: stroke-dashoffset 900ms var(--s9-ease-out);
}

/* Stage nodes — positioned on the circle via --angle */
.s9-lifecycle__node {
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--s9-node-size);
  height: var(--s9-node-size);
  border-radius: 999px;
  background: var(--s9-bg);
  border: 1px solid var(--s9-line-strong);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  cursor: pointer;
  font: inherit;
  color: var(--s9-fg);
  /* Position math: rotate by --angle, push out by radius (absolute px),
     then counter-rotate so the label sits upright. */
  transform:
    translate(-50%, -50%)
    rotate(var(--angle))
    translateY(calc(-1 * var(--s9-wheel-radius)))
    rotate(calc(-1 * var(--angle)));
  transition:
    background var(--s9-d-fast) var(--s9-ease),
    border-color var(--s9-d-fast) var(--s9-ease),
    color var(--s9-d-fast) var(--s9-ease),
    transform 600ms var(--s9-ease-out),
    box-shadow var(--s9-d-base) var(--s9-ease);
  z-index: 2;
}
.s9-lifecycle__node:focus-visible {
  outline: 2px solid var(--s9-accent);
  outline-offset: 4px;
}
.s9-lifecycle__node:hover {
  border-color: var(--s9-fg);
}
.s9-lifecycle__node-num {
  font-family: var(--s9-font-mono);
  font-size: clamp(0.7rem, 1.2vw, 0.85rem);
  letter-spacing: 0.06em;
  color: var(--s9-mute);
}
.s9-lifecycle__node-verb {
  font-family: var(--s9-font-display);
  font-weight: 600;
  font-size: clamp(0.9rem, 1.5vw, 1.1rem);
  letter-spacing: -0.02em;
  line-height: 1;
}
/* Active node */
.s9-lifecycle__wheel[data-active="1"] .s9-lifecycle__node[data-stage="1"],
.s9-lifecycle__wheel[data-active="2"] .s9-lifecycle__node[data-stage="2"],
.s9-lifecycle__wheel[data-active="3"] .s9-lifecycle__node[data-stage="3"],
.s9-lifecycle__wheel[data-active="4"] .s9-lifecycle__node[data-stage="4"],
.s9-lifecycle__wheel[data-active="5"] .s9-lifecycle__node[data-stage="5"],
.s9-lifecycle__wheel[data-active="6"] .s9-lifecycle__node[data-stage="6"] {
  background: var(--s9-accent);
  border-color: var(--s9-accent);
  color: var(--s9-accent-ink);
  transform:
    translate(-50%, -50%)
    rotate(var(--angle))
    translateY(calc(-1 * var(--s9-wheel-radius)))
    rotate(calc(-1 * var(--angle)))
    scale(1.12);
  box-shadow: 0 8px 24px -8px rgba(0,0,0,0.18), 0 0 0 10px rgba(212, 255, 63, 0.14);
  z-index: 3;
}
.s9-lifecycle__wheel[data-active="1"] .s9-lifecycle__node[data-stage="1"] .s9-lifecycle__node-num,
.s9-lifecycle__wheel[data-active="2"] .s9-lifecycle__node[data-stage="2"] .s9-lifecycle__node-num,
.s9-lifecycle__wheel[data-active="3"] .s9-lifecycle__node[data-stage="3"] .s9-lifecycle__node-num,
.s9-lifecycle__wheel[data-active="4"] .s9-lifecycle__node[data-stage="4"] .s9-lifecycle__node-num,
.s9-lifecycle__wheel[data-active="5"] .s9-lifecycle__node[data-stage="5"] .s9-lifecycle__node-num,
.s9-lifecycle__wheel[data-active="6"] .s9-lifecycle__node[data-stage="6"] .s9-lifecycle__node-num {
  color: var(--s9-accent-ink);
}

/* Center content hub — sits inside the soft inner disk */
.s9-lifecycle__hub {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(
    calc(var(--s9-wheel-size) - var(--s9-node-size) * 2 - 64px),
    340px
  );
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s9-space-2);
  z-index: 2;
  padding: var(--s9-space-4) var(--s9-space-3);
}
.s9-lifecycle__hub-step {
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--s9-mute);
}
.s9-lifecycle__hub-title {
  font-family: var(--s9-font-display);
  font-weight: 600;
  font-size: clamp(1.5rem, 3.5vw, 2.5rem);
  line-height: 1;
  letter-spacing: -0.025em;
  color: var(--s9-fg);
  padding-block: 0.04em;
  margin: var(--s9-space-1) 0 var(--s9-space-2);
  transition: opacity 200ms var(--s9-ease);
}
.s9-lifecycle__hub-intro {
  font-size: var(--s9-size-base);
  line-height: 1.5;
  color: var(--s9-fg-mute);
  transition: opacity 200ms var(--s9-ease);
}
.s9-lifecycle__hub-cta {
  margin-top: var(--s9-space-3);
  display: inline-flex;
  align-items: center;
  gap: var(--s9-space-2);
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--s9-fg);
  border-bottom: 1px solid var(--s9-line-strong);
  padding-bottom: 2px;
  transition: color var(--s9-d-fast) var(--s9-ease), border-color var(--s9-d-fast) var(--s9-ease);
}
.s9-lifecycle__hub-cta:hover {
  color: var(--s9-accent-text);
  border-bottom-color: var(--s9-accent-text);
}
/* Fade hub text out briefly when switching for a snappy transition */
.s9-lifecycle__wheel.is-switching .s9-lifecycle__hub-title,
.s9-lifecycle__wheel.is-switching .s9-lifecycle__hub-intro {
  opacity: 0;
}

/* MOBILE — drop the circle, become a stacked stepper list. The wheel is a
   flex column; nodes are full-width rows; the hub becomes a card below
   the row of the active stage (visually anchored via accent border). */
@media (max-width: 760px) {
  .s9-lifecycle__wheel {
    width: 100%;
    aspect-ratio: auto;
    display: flex;
    flex-direction: column;
    gap: var(--s9-space-2);
  }
  .s9-lifecycle__wheel::before { display: none; }
  .s9-lifecycle__ring { display: none; }
  .s9-lifecycle__node {
    position: relative;
    top: auto; left: auto;
    transform: none !important;
    width: 100%;
    height: auto;
    aspect-ratio: auto;
    border-radius: var(--s9-r-md);
    flex-direction: row;
    justify-content: flex-start;
    align-items: center;
    gap: var(--s9-space-4);
    padding: var(--s9-space-4) var(--s9-space-5);
    text-align: left;
    background: var(--s9-bg);
    border: 1px solid var(--s9-line);
  }
  .s9-lifecycle__node-num {
    font-size: 0.875rem;
    color: var(--s9-mute);
    min-width: 2.25rem;
  }
  .s9-lifecycle__node-verb {
    font-size: 1.125rem;
  }
  /* Active state on mobile — accent left rail, no scale (would clip in row) */
  .s9-lifecycle__wheel[data-active="1"] .s9-lifecycle__node[data-stage="1"],
  .s9-lifecycle__wheel[data-active="2"] .s9-lifecycle__node[data-stage="2"],
  .s9-lifecycle__wheel[data-active="3"] .s9-lifecycle__node[data-stage="3"],
  .s9-lifecycle__wheel[data-active="4"] .s9-lifecycle__node[data-stage="4"],
  .s9-lifecycle__wheel[data-active="5"] .s9-lifecycle__node[data-stage="5"],
  .s9-lifecycle__wheel[data-active="6"] .s9-lifecycle__node[data-stage="6"] {
    transform: none !important;
    box-shadow: none;
    background: var(--s9-bg-2);
    border-color: var(--s9-accent);
    border-left-width: 4px;
    padding-left: calc(var(--s9-space-5) - 3px);
  }
  .s9-lifecycle__wheel[data-active="1"] .s9-lifecycle__node[data-stage="1"] .s9-lifecycle__node-num,
  .s9-lifecycle__wheel[data-active="2"] .s9-lifecycle__node[data-stage="2"] .s9-lifecycle__node-num,
  .s9-lifecycle__wheel[data-active="3"] .s9-lifecycle__node[data-stage="3"] .s9-lifecycle__node-num,
  .s9-lifecycle__wheel[data-active="4"] .s9-lifecycle__node[data-stage="4"] .s9-lifecycle__node-num,
  .s9-lifecycle__wheel[data-active="5"] .s9-lifecycle__node[data-stage="5"] .s9-lifecycle__node-num,
  .s9-lifecycle__wheel[data-active="6"] .s9-lifecycle__node[data-stage="6"] .s9-lifecycle__node-num {
    color: var(--s9-accent-text);
  }
  .s9-lifecycle__hub {
    position: static;
    transform: none;
    order: 99;
    width: 100%;
    max-width: none;
    text-align: left;
    align-items: flex-start;
    margin-top: var(--s9-space-4);
    padding: var(--s9-space-5);
    background: var(--s9-bg-2);
    border: 1px solid var(--s9-line);
    border-radius: var(--s9-r-md);
  }
  .s9-lifecycle__hub-title { font-size: clamp(1.5rem, 6vw, 2rem); margin-top: var(--s9-space-2); }
  .s9-lifecycle__hub-intro { font-size: var(--s9-size-base); max-width: 56ch; }
}

/* Philosophy section */
.s9-philosophy {
  background: var(--s9-light-bg);
  color: var(--s9-light-fg);
}
.s9-philosophy__inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(2rem, 4vw, 6rem);
}
@media (max-width: 900px) {
  .s9-philosophy__inner { grid-template-columns: 1fr; }
}
.s9-philosophy__heading {
  font-family: var(--s9-font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
  padding-block: 0.04em;
}
.s9-philosophy__heading em {
  font-family: var(--s9-font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--s9-accent-ink);
  background: var(--s9-accent);
  padding: 0 0.18em 0.06em;
  margin: 0 -0.05em;
  display: inline-block;
  font-size: 1.06em;
  line-height: 0.9;
}
.s9-philosophy__body {
  font-size: var(--s9-size-lg);
  line-height: 1.6;
  color: var(--s9-light-mute);
  max-width: 60ch;
  margin-top: var(--s9-space-5);
}
.s9-philosophy__body p + p { margin-top: var(--s9-space-4); }

/* Stage detail */
.s9-stage-detail {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: clamp(2rem, 4vw, 5rem);
  padding-block: clamp(4rem, 8vw, 8rem);
  border-bottom: 1px solid var(--s9-line);
  position: relative;
}
.s9-stage-detail:last-child { border-bottom: 0; }
@media (max-width: 900px) {
  .s9-stage-detail { grid-template-columns: 1fr; gap: var(--s9-space-6); }
}
.s9-stage-detail__num {
  font-family: var(--s9-font-display);
  font-weight: 700;
  font-size: clamp(3.5rem, 8vw, 7rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--s9-accent-text);
  position: sticky;
  top: calc(var(--s9-header-h) + 2rem);
  align-self: start;
  padding-block: 0.04em;
}
@media (max-width: 900px) {
  .s9-stage-detail__num { position: static; font-size: 3.5rem; }
}
.s9-stage-detail__verb {
  display: block;
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-sm);
  color: var(--s9-mute);
  letter-spacing: 0.05em;
  margin-top: var(--s9-space-3);
}
.s9-stage-detail__title {
  font-family: var(--s9-font-display);
  font-weight: 700;
  font-size: clamp(2.25rem, 4.5vw, 4rem);
  letter-spacing: -0.03em;
  line-height: 1.02;
  margin-bottom: var(--s9-space-5);
  padding-block: 0.04em;
}
.s9-stage-detail__intro {
  font-size: var(--s9-size-xl);
  line-height: 1.45;
  color: var(--s9-fg-mute);
  max-width: 60ch;
  margin-bottom: var(--s9-space-7);
}
.s9-stage-detail__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s9-gutter);
  margin-top: var(--s9-space-6);
}
@media (max-width: 760px) {
  .s9-stage-detail__grid { grid-template-columns: 1fr; }
}
.s9-stage-detail__block {
  border-top: 1px solid var(--s9-line);
  padding-top: var(--s9-space-4);
}
.s9-stage-detail__block-label {
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--s9-mute);
  margin-bottom: var(--s9-space-3);
}
.s9-stage-detail__list {
  display: flex; flex-direction: column;
  gap: var(--s9-space-2);
}
.s9-stage-detail__list li {
  display: flex; gap: var(--s9-space-3);
  align-items: flex-start;
  font-size: var(--s9-size-base);
  color: var(--s9-fg);
}
.s9-stage-detail__list li::before {
  content: "—";
  color: var(--s9-accent-text);
  flex-shrink: 0;
}
.s9-stage-detail__quote {
  font-family: var(--s9-font-display);
  font-weight: 600;
  font-size: var(--s9-size-2xl);
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--s9-fg);
  border-left: 2px solid var(--s9-accent);
  padding-left: var(--s9-space-5);
  margin-top: var(--s9-space-6);
}

/* Engagement models */
.s9-engagements {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s9-gutter);
}
@media (max-width: 900px) {
  .s9-engagements { grid-template-columns: 1fr; }
}
.s9-engagement {
  border: 1px solid var(--s9-line);
  border-radius: var(--s9-r-md);
  padding: var(--s9-space-6);
  display: flex; flex-direction: column;
  background: var(--s9-bg-2);
  transition: border-color var(--s9-d-base) var(--s9-ease), transform var(--s9-d-base) var(--s9-ease);
}
.s9-engagement:hover {
  border-color: var(--s9-accent-text);
  transform: translateY(-4px);
}
.s9-engagement__num {
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-sm);
  color: var(--s9-accent-text);
  margin-bottom: var(--s9-space-3);
}
.s9-engagement__title {
  font-family: var(--s9-font-display);
  font-weight: 700;
  font-size: var(--s9-size-3xl);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: var(--s9-space-4);
}
.s9-engagement__desc {
  font-size: var(--s9-size-base);
  line-height: 1.55;
  color: var(--s9-fg-mute);
  margin-bottom: var(--s9-space-5);
}
.s9-engagement__meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s9-space-4);
  padding-top: var(--s9-space-4);
  border-top: 1px solid var(--s9-line);
  margin-top: auto;
}
.s9-engagement__meta dt {
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--s9-mute);
  margin-bottom: var(--s9-space-1);
}
.s9-engagement__meta dd {
  font-family: var(--s9-font-display);
  font-weight: 600;
  font-size: var(--s9-size-lg);
  color: var(--s9-fg);
}