/* ============================================================================
   Mynavi TechTus Vietnam — v2 how-we-work page styles
   Ported from 05-mockups/v2/jp/how-we-work.html <style> (page markup; the shared
   header/nav + breadcrumb live in design-system.css / components.css).
   Token-only: colours/sizes/spacing/radius/duration use design-system tokens.
   Raw values allowed: rgba(255,255,255,…) overlay + structural dimensions
   (sticky offsets, diagram sizing, stagger delays) with no token.
   ============================================================================ */

/* ---------------------------------------------------------------------------
   1. EYEBROW + PROCESS FLOW DIAGRAM
   --------------------------------------------------------------------------- */
.hww-hero-sec {
  padding: clamp(56px, 8vw, 96px) var(--gutter) clamp(56px, 7vw, 88px);
  border-bottom: var(--border-hairline);
}
.hww-hero-sec .breadcrumb { margin-bottom: var(--sp-7); }
.hww-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: clamp(28px, 6vw, 80px);
  align-items: end;
}
.hww-hero h1 {
  margin: var(--sp-6) 0 0;
  font-size: clamp(34px, 4.6vw, 60px);
  line-height: 1.18;
  letter-spacing: var(--ls-tight);
}
.hww-hero__lead { margin: 0 0 var(--sp-2); font-size: var(--fs-base); line-height: 1.95; color: var(--c-ink-3); }

.ek {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-eyebrow-lg);
  text-transform: uppercase;
  color: var(--c-cyan);
}

.jlanes {
  display: flex;
  gap: var(--sp-7);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-wider);
}
.jlanes span { display: inline-flex; align-items: center; gap: 9px; }
.jlanes span::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--lane);
}
.jlanes .l-dev { --lane: var(--c-cyan-deep); color: var(--c-cyan-deep); }
.jlanes .l-nav { --lane: var(--c-cyan); color: var(--c-cyan); }

.jflow { margin-top: var(--sp-9); }
.jrail {
  position: relative;
  display: flex;
  align-items: stretch;
  padding: 104px 168px 104px 0;
}
.jrail::before {
  content: "";
  position: absolute;
  left: 0;
  right: 148px;
  top: 50%;
  height: 22px;
  transform: translateY(-50%);
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--c-cyan-line), var(--c-cyan-strong) 55%, var(--c-cyan));
  opacity: .9;
}
.jnode {
  position: relative;
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.jnode .dot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--c-bg);
  border: 3px solid var(--c-cyan);
  transform: translate(-50%, -50%);
  z-index: 2;
}
.jnode .stem {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 30px;
  background: var(--c-cyan-line);
}
.jnode.up .stem { bottom: 50%; }
.jnode.down .stem { top: 50%; }
.jnode.up .dot { border-color: var(--c-cyan-deep); }
.jnode.up .stem { background: var(--c-cyan-deep); }

.jcard {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 150px;
  max-width: 100%;
  text-align: center;
}
.jnode.up .jcard { bottom: calc(50% + 32px); }
.jnode.down .jcard { top: calc(50% + 32px); }
.jcard .jen { margin-bottom: 3px; font-size: var(--fs-base); font-weight: var(--fw-bold); color: var(--c-cyan); }
.jcard h4 { margin: 0 0 5px; font-size: var(--fs-md); font-weight: var(--fw-semibold); color: var(--c-ink); }
.jcard p { margin: 0; font-size: var(--fs-2xs); line-height: var(--lh-snug); color: var(--c-ink-3); }
.jnode.up .jcard .jen { color: var(--c-cyan-deep); }

.jgrowth {
  --gy: -50%;
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(var(--gy));
  width: 104px;
  height: 104px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-on-dark);
  font-weight: var(--fw-bold);
  font-size: var(--fs-2xl);
  background: radial-gradient(circle at 50% 40%, var(--c-cyan), var(--c-cyan-deep));
  box-shadow: 0 0 0 12px color-mix(in srgb, var(--c-cyan) 14%, transparent),
              0 0 40px color-mix(in srgb, var(--c-cyan) 30%, transparent);
  z-index: 3;
}

/* staggered entrance: each node 0.35s, 0.35s after the previous; Growth last */
.jflow-anim .jnode {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--dur-5) var(--ease), transform var(--dur-5) var(--ease);
}
.jflow-anim .jgrowth {
  opacity: 0;
  transform: translateY(var(--gy)) scale(.85);
  transition: opacity var(--dur-5) var(--ease), transform var(--dur-5) var(--ease);
}
.jflow-anim.in .jnode { opacity: 1; transform: none; }
.jflow-anim.in .jgrowth { opacity: 1; transform: translateY(var(--gy)); }
.jflow-anim .jnode:nth-child(1) { transition-delay: 0s; }
.jflow-anim .jnode:nth-child(2) { transition-delay: .35s; }
.jflow-anim .jnode:nth-child(3) { transition-delay: .7s; }
.jflow-anim .jnode:nth-child(4) { transition-delay: 1.05s; }
.jflow-anim .jnode:nth-child(5) { transition-delay: 1.4s; }
.jflow-anim .jnode:nth-child(6) { transition-delay: 1.75s; }
.jflow-anim .jgrowth { transition-delay: 2.1s; }

@media (prefers-reduced-motion: reduce) {
  .jflow-anim .jnode { opacity: 1; transform: none; transition: none; }
  .jflow-anim .jgrowth { opacity: 1; transform: translateY(var(--gy)); transition: none; }
}

/* ---------------------------------------------------------------------------
   2. OPERATING MODEL DIAGRAM
   --------------------------------------------------------------------------- */
.model-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1.15fr) auto minmax(0, 1fr);
  gap: clamp(14px, 2.2vw, 30px);
  align-items: center;
}
.mcol-cap {
  margin-bottom: 14px;
  font-size: var(--fs-2xs);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-eyebrow-lg);
  text-transform: uppercase;
  color: var(--c-ink-4);
  text-align: center;
}
.opin { display: flex; flex-direction: column; gap: var(--sp-5); }
.mincard {
  border: var(--border-hairline);
  border-radius: var(--r-field);
  background: var(--c-bg);
  padding: var(--sp-4) var(--sp-5);
}
.mih { display: flex; align-items: center; gap: 11px; margin-bottom: var(--sp-2); }
.miic { flex: none; width: 36px; height: 36px; border-radius: 9px; display: grid; place-items: center; }
.mincard.gf .miic { background: var(--c-cyan-soft); color: var(--c-cyan); }
.mincard.bf .miic { background: var(--c-surface-2); color: var(--c-cyan-deep); }
.miic svg { width: 19px; height: 19px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.mit { font-size: var(--fs-md); font-weight: var(--fw-semibold); color: var(--c-ink); line-height: 1.15; }
.mien { margin-top: 3px; font-size: var(--fs-2xs); font-weight: var(--fw-bold); letter-spacing: .08em; color: var(--c-cyan); }
.mincard.bf .mien { color: var(--c-cyan-deep); }
.midd { margin: var(--sp-2) 0 0; font-size: var(--fs-xs); line-height: var(--lh-normal); color: var(--c-ink-3); }
.marrow { color: var(--c-cyan); display: grid; place-items: center; padding: 0 var(--sp-1); }
.marrow svg { width: 28px; height: 28px; stroke: currentColor; fill: none; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }

.mcore {
  border: 2px solid var(--c-cyan);
  border-radius: var(--r-xl);
  background: linear-gradient(160deg, var(--c-bg), var(--c-cyan-soft));
  padding: 26px var(--sp-6);
  text-align: center;
  box-shadow: var(--shadow-cyan);
}
.mcore-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--c-cyan);
  color: var(--c-on-dark);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  padding: 7px var(--sp-4);
  border-radius: var(--r-pill);
  margin-bottom: var(--sp-4);
}
.mcore-cic {
  width: 58px;
  height: 58px;
  margin: 0 auto var(--sp-4);
  border-radius: var(--r-lg);
  background: var(--c-bg);
  border: 1.5px solid var(--c-cyan);
  color: var(--c-cyan-strong);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-cyan-sm);
}
.mcore-cic svg { width: 42px; height: 42px; }
.mcore-t { margin: 0; font-size: var(--fs-2xl); font-weight: var(--fw-bold); color: var(--c-ink); line-height: 1.15; }
.mcore-tag {
  margin-top: 5px;
  font-size: var(--fs-2xs);
  font-weight: var(--fw-bold);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-cyan-strong);
}
.mcore-d { margin: 14px 0 0; font-size: var(--fs-xs); line-height: var(--lh-normal); color: var(--c-ink-3); }

.mph { display: flex; flex-direction: column; gap: var(--sp-3); }
.mph-row {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  border: var(--border-hairline);
  border-radius: var(--r-md);
  background: var(--c-bg);
  padding: 10px var(--sp-4);
}
.mph-no {
  flex: none;
  width: 24px;
  height: 24px;
  border-radius: 7px;
  background: var(--c-cyan-soft);
  color: var(--c-cyan-strong);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  display: grid;
  place-items: center;
}
.mph-ic { flex: none; color: var(--c-cyan); display: grid; place-items: center; }
.mph-ic svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.mph-t { font-size: var(--fs-sm); font-weight: var(--fw-semibold); line-height: 1.1; }
.mph-d { font-size: var(--fs-2xs); line-height: 1.4; color: var(--c-ink-3); }

.pillars {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-6);
  margin-top: clamp(36px, 5vw, 56px);
}
.pillar {
  border: var(--border-hairline);
  border-radius: var(--r-md);
  padding: var(--sp-4) var(--sp-5);
  background: var(--c-bg);
}
.pillar .plt { font-size: var(--fs-base); font-weight: var(--fw-semibold); color: var(--c-ink); white-space: nowrap; }
.pillar .pld { margin-top: 3px; font-size: var(--fs-2xs); line-height: var(--lh-snug); color: var(--c-ink-3); }

/* ---------------------------------------------------------------------------
   3. ENGAGEMENT GROUPS
   --------------------------------------------------------------------------- */
.section-head.engagement .section-head__title,
.section-head.model .section-head__title {
  flex-basis: 640px;
}
.section-head.engagement .section-head__leadwrap,
.section-head.model .section-head__leadwrap {
  flex-basis: 400px;
}
.engage-group {
  display: grid;
  grid-template-columns: minmax(0, 260px) minmax(0, 1fr);
  gap: clamp(32px, 6vw, 80px);
  align-items: start;
  padding: clamp(40px, 6vw, 64px) 0;
  border-top: 1px solid var(--c-line-strong);
}
.engage-group:first-of-type { border-top: 0; padding-top: 0; }
.engage-group.gf .pcard { --lane: var(--c-success); }
.engage-group.bf .pcard { --lane: var(--c-warning); }
.eg-meta { position: sticky; top: 120px; }
.eg-kick { font-size: var(--fs-xs); font-weight: var(--fw-bold); letter-spacing: var(--ls-eyebrow-lg); text-transform: uppercase; }
.eg-kick.gf { color: var(--c-success); }
.eg-kick.bf { color: var(--c-warning); }
.eg-title {
  margin: var(--sp-3) 0 0;
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-tight);
  line-height: var(--lh-tight);
}
.phaseflow {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  gap: clamp(18px, 3vw, 36px);
  align-items: start;
}
.phaseflow.two { grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); }
.pharrow { align-self: center; color: var(--c-muted); padding-top: 44px; }
.pcard { --lane: var(--c-cyan); padding-top: 22px; border-top: 2px solid var(--lane); }
.pcard.maint { --lane: var(--c-cyan-deep); }
.pstep { font-size: var(--fs-2xs); font-weight: var(--fw-bold); letter-spacing: var(--ls-eyebrow-lg); color: var(--lane); }
.pcard h4 {
  margin: 14px 0 0;
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-tight);
  line-height: 1.25;
}
.pbadge {
  display: inline-block;
  margin-top: var(--sp-4);
  padding: 6px 0;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-normal);
  color: var(--c-ink-3);
  border-bottom: 1px solid var(--c-line-strong);
}
.pcard p { margin: var(--sp-5) 0 0; font-size: var(--fs-sm); line-height: 1.9; color: var(--c-ink-3); }
.aichip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: var(--sp-6);
  font-size: var(--fs-2xs);
  font-weight: var(--fw-bold);
  letter-spacing: .06em;
  color: var(--c-cyan);
}
.aichip::before { content: ""; width: 20px; height: 2px; background: var(--c-cyan); flex: none; }

/* ---------------------------------------------------------------------------
   4. RESPONSIVE (1024 / 900 / 768)
   --------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .jrail { flex-direction: column; padding: 0; }
  .jrail::before { display: none; }
  .jnode {
    justify-content: flex-start;
    padding: 14px 0 14px 22px;
    border-left: 2px solid var(--c-cyan-line);
    margin-left: var(--sp-2);
  }
  .jnode .dot, .jnode .stem { display: none; }
  .jcard { position: static; transform: none; width: auto; max-width: none; text-align: left; }
  .jgrowth {
    --gy: 0;
    position: static;
    transform: translateY(var(--gy));
    margin: 18px 0 0 30px;
    width: 84px;
    height: 84px;
    font-size: var(--fs-xl);
  }
}

@media (max-width: 900px) {
  .hww-hero { grid-template-columns: minmax(0, 1fr); gap: var(--sp-8); align-items: start; }
  .model-grid { grid-template-columns: minmax(0, 1fr); gap: var(--sp-7); }
  .marrow { transform: rotate(90deg); padding: var(--sp-1) 0; }
  .pillars { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 768px) {
  .engage-group { grid-template-columns: minmax(0, 1fr); gap: var(--sp-6); }
  .eg-meta { position: static; }
  .phaseflow, .phaseflow.two { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .pharrow { display: none; }
  .pcard { padding-bottom: var(--sp-7); margin-bottom: var(--sp-7); border-bottom: var(--border-hairline); }
  .pcard:last-child { margin-bottom: 0; border-bottom: 0; }
}