/* ============================================================================
   CCDV — Practice / Method — page-local styles
   v0.6.7 — practice_method_six_stack_rail_refactor
   Scope: services.html only. Loaded after styles.css.
   All selectors are namespaced under .practice-method-page. No global overrides.
   Reuses global tokens from styles.css (:root). No generic selector redefinition.
   ========================================================================== */

.practice-method-page {
  --pm7-rail-w: 240px;
  --pm7-gap-anchor: 24px;                 /* offset below fixed header */
  --pm7-stack-pad: var(--space-5);
  --pm7-read: 68ch;
}

/* ---- Shell -------------------------------------------------------------- */
.practice-method-page .practice-method-shell {
  display: grid;
  grid-template-columns: var(--pm7-rail-w) minmax(0, 1fr);
  gap: var(--space-5);
  align-items: start;                     /* required so the sticky rail column does not stretch */
  padding-top: var(--space-4);
  padding-bottom: var(--space-6);
}

/* ---- Desktop rail ------------------------------------------------------- */
.practice-method-page .practice-rail {
  position: sticky;
  top: calc(var(--site-header-h, 72px) + var(--pm7-gap-anchor));
  align-self: start;
}

.practice-method-page .practice-rail__nav {
  display: block;
}

.practice-method-page .practice-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--line);
}

.practice-method-page .practice-rail__link {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 12px 14px;
  margin-left: -1px;
  border-left: 1px solid transparent;
  color: var(--muted);
  transition: color var(--motion-fast, 180ms) var(--ease, ease),
              border-color var(--motion-fast, 180ms) var(--ease, ease);
  min-height: 44px;
}

.practice-method-page .practice-rail__num {
  font-size: 10px;
  letter-spacing: .08em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.practice-method-page .practice-rail__label {
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.practice-method-page .practice-rail__link:hover {
  color: var(--fg);
}

.practice-method-page .practice-rail__link[aria-current="true"] {
  color: var(--fg);
  border-left-color: var(--fg);
}

.practice-method-page .practice-rail__link[aria-current="true"] .practice-rail__num {
  color: var(--fg);
}

.practice-method-page .practice-rail__link:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 2px;
  color: var(--fg);
}

/* ---- Mobile section selector (hidden on desktop) ------------------------ */
.practice-method-page .practice-mobile-index {
  display: none;
}

/* ---- Stack column ------------------------------------------------------- */
.practice-method-page .practice-stack-column {
  min-width: 0;
}

/* ---- Stacks ------------------------------------------------------------- */
.practice-method-page .practice-stack {
  position: relative;
  min-height: calc(100svh - var(--site-header-h, 72px) - var(--space-5));
  padding: var(--pm7-stack-pad) 0;
  scroll-margin-top: calc(var(--site-header-h, 72px) + var(--pm7-gap-anchor));
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.practice-method-page .practice-stack:first-of-type {
  border-top: 0;
  padding-top: var(--space-3);
}

/* Stacks 04 and 05 carry two internal scenes and may exceed one viewport. */
.practice-method-page .practice-stack--04,
.practice-method-page .practice-stack--05 {
  justify-content: flex-start;
}

/* Restrained alternating tone so each stack reads as a distinct rectangle. */
.practice-method-page .practice-stack[data-stack-tone="alt"] {
  background:
    linear-gradient(180deg, rgba(255,255,255,.012), rgba(255,255,255,.012));
}

/* ---- Stack heading block ------------------------------------------------ */
.practice-method-page .pm7-head {
  max-width: 900px;
}

.practice-method-page .pm7-head__intro {
  margin-top: var(--space-3);
}

.practice-method-page .pm7-h1 {
  max-width: 20ch;
}
@media (max-width: 1024px) {
  .practice-method-page .pm7-h1 { max-width: 24ch; }
}

.practice-method-page .pm7-stack-mark {
  position: absolute;
  top: var(--space-2);
  right: 0;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  opacity: .6;
  pointer-events: none;
}

.practice-method-page .pm7-body {
  font-size: 17px;
  color: var(--muted);
  max-width: var(--pm7-read);
  margin: 18px 0 0;
  line-height: 1.5;
}

.practice-method-page .pm7-h2 {
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.06;
  font-weight: 400;
  letter-spacing: -.03em;
  margin: 0;
}

.practice-method-page .pm7-h3 {
  font-size: 15px;
  letter-spacing: .1em;
  text-transform: uppercase;
  font-weight: 400;
  margin: 0;
}

.practice-method-page .pm7-scene-kicker {
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 16px;
}

.practice-method-page .pm7-close {
  font-size: 17px;
  color: var(--fg);
  max-width: var(--pm7-read);
  margin: var(--space-4) 0 0;
  line-height: 1.5;
}

.practice-method-page .pm7-note {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
  margin: var(--space-2) 0 0;
}

.practice-method-page .pm7-sub {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
}

.practice-method-page .pm7-sub li {
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 4px 9px;
  border: 1px solid var(--line);
}

/* ---- Two-column layouts (adapted per stack) ---------------------------- */
.practice-method-page .pm7-grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-4);
  align-items: start;
}
.practice-method-page .pm7-grid--5-7 { grid-template-columns: minmax(0,5fr) minmax(0,7fr); }
.practice-method-page .pm7-grid--4-8 { grid-template-columns: minmax(0,4fr) minmax(0,8fr); }
.practice-method-page .pm7-grid--6-6 { grid-template-columns: minmax(0,1fr) minmax(0,1fr); }
.practice-method-page .pm7-grid--7-5 { grid-template-columns: minmax(0,7fr) minmax(0,5fr); }

/* ============================================================================
   Selector / editorial tabs (Stack 01, 02, 04A)
   No-JS: all panels visible. JS enhancement hides inactive panels.
   ========================================================================== */
.practice-method-page .pm7-tabs {
  margin-top: var(--space-4);
}

.practice-method-page .pm7-tabs__main {
  min-width: 0;
}
.practice-method-page .pm7-tabs__main .pm7-bp {
  margin-top: var(--space-3);
}

.practice-method-page .pm7-tabs__list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.practice-method-page .pm7-tab {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  border-left: 2px solid var(--line);
  color: var(--muted);
  font: inherit;
  cursor: pointer;
  padding: 14px 16px;
  letter-spacing: .1em;
  text-transform: uppercase;
  font-size: 13px;
  transition: color var(--motion-fast,180ms) var(--ease,ease),
              border-color var(--motion-fast,180ms) var(--ease,ease),
              background var(--motion-fast,180ms) var(--ease,ease);
}

.practice-method-page .pm7-tab:hover { color: var(--fg); }

.practice-method-page .pm7-tab[aria-selected="true"] {
  color: var(--fg);
  border-left-color: var(--fg);
  background: var(--panel);
}

.practice-method-page .pm7-tab:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: -2px;
  color: var(--fg);
}

.practice-method-page .pm7-tabs__panels {
  min-width: 0;
}

.practice-method-page .pm7-panel {
  margin-top: 18px;
}
.practice-method-page .pm7-panel:first-child { margin-top: 0; }

/* Once enhanced, panels are separated only by tab switching. */
.practice-method-page .pm7-tabs[data-enhanced="true"] .pm7-panel { margin-top: 0; }

.practice-method-page .pm7-panel__title {
  font-size: 18px;
  letter-spacing: -.01em;
  text-transform: none;
  color: var(--fg);
  margin: 0 0 4px;
  font-weight: 400;
}

/* ============================================================================
   Expandable index / accordion (Stack 03, 05B, 06) — native details/summary
   No-JS: works natively. JS enhancement coordinates single-open.
   ========================================================================== */
.practice-method-page .pm7-accordion {
  display: grid;
  gap: 8px;
  margin-top: var(--space-3);
}

.practice-method-page .pm7-acc {
  border: 1px solid var(--line);
  background: var(--panel);
}

.practice-method-page .pm7-acc__summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  color: var(--fg);
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: 14px;
  min-height: 44px;
}
.practice-method-page .pm7-acc__summary::-webkit-details-marker { display: none; }

.practice-method-page .pm7-acc__sign {
  position: relative;
  width: 14px;
  height: 14px;
  flex: 0 0 14px;
}
.practice-method-page .pm7-acc__sign::before,
.practice-method-page .pm7-acc__sign::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 14px;
  height: 1px;
  background: var(--fg);
  transform: translateY(-50%);
}
.practice-method-page .pm7-acc__sign::after {
  transform: translateY(-50%) rotate(90deg);
  transition: transform var(--motion,320ms) var(--ease,ease);
}
.practice-method-page .pm7-acc[open] .pm7-acc__sign::after {
  transform: translateY(-50%) rotate(0deg);
}

.practice-method-page .pm7-acc__summary:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: -2px;
}

.practice-method-page .pm7-acc__panel {
  padding: 0 18px 18px;
}

.practice-method-page .pm7-acc__panel .pm7-body { margin-top: 0; }

/* ============================================================================
   Carousel / stepped sequence (Stack 04B, 05A)
   No-JS: all slides stacked & readable, controls hidden.
   JS enhancement: paginate to one slide, show controls.
   ========================================================================== */
.practice-method-page .pm7-carousel__viewport { min-width: 0; }

.practice-method-page .pm7-carousel__track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.practice-method-page .pm7-slide {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: var(--space-3);
}

.practice-method-page .pm7-slide__index {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  margin: 0 0 10px;
}

.practice-method-page .pm7-slide__title {
  font-size: 18px;
  letter-spacing: .04em;
  text-transform: uppercase;
  font-weight: 400;
  margin: 0;
  color: var(--fg);
}

.practice-method-page .pm7-carousel__controls { display: none; }

.practice-method-page .pm7-carousel__pos {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  min-width: 68px;
  text-align: center;
}

.practice-method-page .pm7-carousel__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  font: inherit;
  font-size: 18px;
  line-height: 1;
}
.practice-method-page .pm7-carousel__btn:hover { background: var(--panel-2); }
.practice-method-page .pm7-carousel__btn:disabled { opacity: .35; cursor: default; }
.practice-method-page .pm7-carousel__btn:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 2px;
}

/* Enhanced (JS) mode */
.practice-method-page .pm7-carousel[data-enhanced="true"] .pm7-carousel__viewport {
  overflow: hidden;
}
.practice-method-page .pm7-carousel[data-enhanced="true"] .pm7-carousel__track {
  display: flex;
  gap: 0;
  transition: transform var(--motion,320ms) var(--ease,ease);
  will-change: transform;
}
.practice-method-page .pm7-carousel[data-enhanced="true"] .pm7-slide {
  flex: 0 0 100%;
  min-width: 0;
}
.practice-method-page .pm7-carousel[data-enhanced="true"] .pm7-carousel__controls {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: var(--space-3);
}

/* Stepped sequence (04B) — construction step carries visual weight via marker */
.practice-method-page .pm7-slide--emphasis .pm7-slide__title { letter-spacing: .06em; }

/* ============================================================================
   Real interface evidence (Stack 04A)
   ========================================================================== */
.practice-method-page .pm7-evidence {
  margin: 0;
  border: 1px solid var(--line);
  background: #050505;
}

.practice-method-page .pm7-evidence__frame {
  display: block;
  width: 100%;
  aspect-ratio: 2560 / 1252;      /* reserve dimensions to avoid layout shift */
  overflow: hidden;
}

.practice-method-page .pm7-evidence__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

/* ============================================================================
   BlackPrint (Stack 01, 02, 03, 06) — restrained inline SVG
   ========================================================================== */
.practice-method-page .pm7-bp {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: var(--space-3);
  display: block;
}

.practice-method-page .pm7-bp__svg {
  width: 100%;
  height: auto;
  display: block;
}

.practice-method-page .pm7-bp__grid line {
  stroke: var(--line);
  stroke-width: 1;
  opacity: .5;
}

.practice-method-page .pm7-bp__link {
  stroke: var(--line-strong);
  stroke-width: 1;
  fill: none;
}

.practice-method-page .pm7-bp__node {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 1;
}

.practice-method-page .pm7-bp__core {
  fill: var(--panel-2);
  stroke: var(--fg);
  stroke-width: 1;
}

.practice-method-page .pm7-bp__label {
  fill: var(--muted);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-family: "Inter Display", Arial, sans-serif;
}

.practice-method-page .pm7-bp__label--core { fill: var(--fg); }

/* Active-node emphasis driven by the Stack 01 selector (static meaning kept). */
.practice-method-page .pm7-bp [data-bp-node].is-active .pm7-bp__node,
.practice-method-page .pm7-bp [data-bp-node].is-active .pm7-bp__core {
  stroke: var(--fg);
}
.practice-method-page .pm7-bp [data-bp-node].is-active .pm7-bp__link {
  stroke: var(--fg);
}
.practice-method-page .pm7-bp [data-bp-node].is-active .pm7-bp__label {
  fill: var(--fg);
}

/* ============================================================================
   Conditions band (Stack 06)
   ========================================================================== */
.practice-method-page .pm7-conditions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding: var(--space-3) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.practice-method-page .pm7-condition__title {
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--fg);
  margin: 0 0 8px;
  font-weight: 400;
}

/* ============================================================================
   CTA (Stack 06)
   ========================================================================== */
.practice-method-page .pm7-cta {
  margin-top: var(--space-5);
  max-width: 760px;
}

.practice-method-page .pm7-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: var(--space-3);
}

/* ============================================================================
   Utility
   ========================================================================== */
.practice-method-page .pm7-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================================
   Responsive — rail collapses to mobile selector at <= 1024px
   Audited widths: 390 / 768 / 1100 / 1440
   ========================================================================== */
@media (max-width: 1024px) {
  .practice-method-page .practice-method-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    padding-top: 0;
  }

  .practice-method-page .practice-rail { display: none; }

  .practice-method-page .practice-mobile-index {
    display: block;
    position: sticky;
    top: var(--site-header-h, 72px);
    z-index: 15;
    margin: 0 0 var(--space-3);
    background: rgba(0, 0, 0, .92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
  }

  .practice-method-page .pm7-mindex { display: block; }

  .practice-method-page .pm7-mindex__summary {
    list-style: none;
    cursor: pointer;
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 12px;
    align-items: center;
    padding: 14px 4px;
    min-height: 44px;
  }
  .practice-method-page .pm7-mindex__summary::-webkit-details-marker { display: none; }

  .practice-method-page .pm7-mindex__pos {
    font-size: 12px;
    letter-spacing: .12em;
    color: var(--muted);
    font-variant-numeric: tabular-nums;
  }

  .practice-method-page .pm7-mindex__label {
    font-size: 12px;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--fg);
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .practice-method-page .pm7-mindex__cue {
    font-size: 10px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--muted);
  }

  .practice-method-page .pm7-mindex__summary:focus-visible {
    outline: 2px solid var(--fg);
    outline-offset: -2px;
  }

  .practice-method-page .pm7-mindex__nav {
    display: grid;
    gap: 1px;
    padding: 4px 0 12px;
    border-top: 1px solid var(--line);
  }

  .practice-method-page .pm7-mindex__link {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 12px;
    align-items: baseline;
    padding: 12px 4px;
    color: var(--muted);
    min-height: 44px;
  }
  .practice-method-page .pm7-mindex__link[aria-current="true"] { color: var(--fg); }
  .practice-method-page .pm7-mindex__link:focus-visible {
    outline: 2px solid var(--fg);
    outline-offset: -2px;
    color: var(--fg);
  }
  .practice-method-page .pm7-mindex__num {
    font-size: 10px;
    letter-spacing: .08em;
    font-variant-numeric: tabular-nums;
  }
  .practice-method-page .pm7-mindex__name {
    font-size: 11px;
    letter-spacing: .14em;
    text-transform: uppercase;
  }

  /* Tablet: keep two-column reading where it still fits, but avoid narrow copy */
  .practice-method-page .pm7-grid--5-7,
  .practice-method-page .pm7-grid--4-8 {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 768px) {
  .practice-method-page .practice-stack {
    min-height: 0;
    padding: var(--space-4) 0;
    justify-content: flex-start;
  }

  .practice-method-page .pm7-grid,
  .practice-method-page .pm7-grid--6-6,
  .practice-method-page .pm7-grid--7-5 {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-3);
  }

  .practice-method-page .pm7-conditions {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-2);
  }

  .practice-method-page .pm7-stack-mark { position: static; margin-bottom: 12px; opacity: .6; }

  .practice-method-page .pm7-cta__actions { flex-direction: column; align-items: stretch; }
  .practice-method-page .pm7-cta__actions .button { width: 100%; }
}

@media (max-width: 420px) {
  .practice-method-page .pm7-body,
  .practice-method-page .pm7-close { font-size: 16px; }
  .practice-method-page .pm7-bp { padding: var(--space-2); }
}

/* ============================================================================
   Reduced motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  .practice-method-page .pm7-carousel[data-enhanced="true"] .pm7-carousel__track { transition: none; }
  .practice-method-page .pm7-acc__sign::after { transition: none; }
  .practice-method-page .pm7-tab,
  .practice-method-page .practice-rail__link { transition: none; }
}