/* ============================================================================
   輕ZONE Relax Zone HK — case study theme. Electric blue + yellow, friendly,
   KOKUYO-clean. Scoped to .rzcase.
   ========================================================================== */
.rzcase {
  --rz-blue: #0079C0;
  --rz-navy: #426FA3;
  --rz-sky: #BEE5F2;
  --rz-cloud: #D9E8F1;
  --rz-steel: #9FB4CC;
  --rz-yellow: #FDF27B;
  --rz-ink: #1d2b3a;
  --rz-mist: #f2f8fc;
  --rz-line: #dce8f1;
  --font-display: var(--font-sans);
  background: #fff;
  color: var(--rz-ink);
}
.rzcase img { display: block; }

/* ---- shared spacing utilities ---- */
.rzcase .rzsec { padding-block: clamp(3.5rem, 2rem + 5vw, 7rem); }
.rzcase .pb-gap { padding-bottom: clamp(3rem, 2rem + 4vw, 5.5rem); }
.rzcase .mt-gap { margin-top: clamp(1.5rem, 1rem + 2vw, 3rem); }
.rzcase .section-gap { height: clamp(2rem, 1rem + 3vw, 4rem); }

.rzcase__p { font-family: var(--font-sans); font-size: clamp(15px, 14px + .3vw, 17px); line-height: 1.95;
  color: #3a4d5e; margin: 0 0 1.1em; max-width: 64ch; }
.rzcase__p:last-child { margin-bottom: 0; }

.rzeyebrow { display: inline-flex; align-items: center; gap: 9px; font-family: var(--font-mono); font-size: 12px;
  font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--rz-blue); }
.rzeyebrow::before { content: ""; width: 22px; height: 2px; background: var(--rz-blue); border-radius: 2px; }
.rzeyebrow--on { color: #fff; }
.rzeyebrow--on::before { background: var(--rz-yellow); }

.rzh2 { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.5rem, 1.1rem + 1.9vw, 2.5rem);
  line-height: 1.28; letter-spacing: -.01em; color: var(--rz-blue); margin: 0; text-wrap: balance; }
.rzh2--on { color: #fff; }
.rzh2--ink { color: var(--rz-ink); }

/* ---- Hero ---- */
.rzhero { position: relative; overflow: hidden; padding-block: clamp(1.5rem,1rem + 2vw,2.5rem) clamp(3rem,2rem + 4vw,5rem);
  background: linear-gradient(170deg, var(--rz-mist) 0%, #fff 70%); }
.rzhero__blob { position: absolute; border-radius: 999px; filter: blur(8px); opacity: .5; z-index: 0; pointer-events: none; }
.rzhero__blob.b1 { width: 320px; height: 320px; background: var(--rz-sky); top: -80px; right: -60px; }
.rzhero__blob.b2 { width: 200px; height: 200px; background: var(--rz-yellow); opacity: .35; bottom: -40px; left: 8%; }
.rzback { appearance: none; background: none; border: 0; cursor: pointer; display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-sans); font-size: 14px; font-weight: 500; color: var(--rz-navy); margin-bottom: 1.6rem;
  position: relative; z-index: 1; transition: color var(--dur-fast); }
.rzback:hover { color: var(--rz-blue); }
.rzback [data-lucide] { width: 16px; height: 16px; }
.rzhero__logo { position: relative; z-index: 1; display: block; height: clamp(64px, 8vw, 96px); width: auto; margin-bottom: 1.6rem; }
.rzhero__grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.12fr 0.88fr; gap: clamp(1.6rem, 3vw, 3rem); align-items: center; }
.rzhero__meta { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; flex-wrap: wrap; }
.rzchip { font-family: var(--font-mono); font-size: 12px; font-weight: 600; letter-spacing: .06em; color: #fff;
  background: var(--rz-blue); border-radius: 999px; padding: 5px 14px; }
.rzhero__year { font-family: var(--font-mono); font-size: 12.5px; color: var(--rz-navy); letter-spacing: .03em; }
.rzhero__title { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.7rem, 1.15rem + 2.6vw, 3.1rem);
  line-height: 1.24; letter-spacing: -.015em; color: var(--rz-ink); margin: 0; text-wrap: balance; }
.rzhero__sub { font-family: var(--font-sans); font-size: clamp(15px,14px + .35vw,18px); line-height: 1.7; color: #4a5d6e;
  margin: 1.2rem 0 0; max-width: 52ch; }
.rzhero__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 1.6rem; }
.rztag { font-family: var(--font-mono); font-size: 11px; font-weight: 500; letter-spacing: .03em; color: var(--rz-navy);
  background: #fff; border: 1px solid var(--rz-line); border-radius: 999px; padding: 6px 12px; }
.rzhero__art { position: relative; }
.rzhero__art img { width: 100%; max-width: 460px; height: auto; margin: 0 auto; filter: drop-shadow(0 30px 50px rgba(0,121,192,.16)); }

/* ---- generic figure ---- */
.rzshot { position: relative; margin-top: clamp(2rem,3vw,3rem); border-radius: var(--radius-xl); overflow: hidden;
  border: 1px solid var(--rz-line); box-shadow: var(--shadow-lg); }
.rzshot img { width: 100%; height: auto; }
.rzshot__cap { display: block; font-family: var(--font-mono); font-size: 12px; color: var(--rz-navy);
  background: var(--rz-mist); padding: 10px 16px; border-top: 1px solid var(--rz-line); }
.rzfig { margin-top: clamp(2rem,3vw,3rem); border-radius: var(--radius-xl); overflow: hidden; }
.rzfig img { width: 100%; height: auto; }

/* ---- Section tints ---- */
.rzsec--mist { background: var(--rz-mist); }
.rzsec--blue { background: var(--rz-blue); }
.rzsec--blue .rzcase__p { color: rgba(255,255,255,.86); }

/* ---- Challenge cards ---- */
.rzchallenge { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; margin-top: clamp(2rem,3vw,3rem); }
.rzchalcard { background: #fff; border: 1px solid var(--rz-line); border-radius: var(--radius-lg); padding: 26px 22px; }
.rzchalcard__ic { width: 46px; height: 46px; border-radius: 12px; background: var(--rz-sky); color: var(--rz-blue);
  display: grid; place-items: center; margin-bottom: 16px; }
.rzchalcard__ic [data-lucide] { width: 22px; height: 22px; }
.rzchalcard b { display: block; font-family: var(--font-display); font-weight: 700; font-size: 16px; color: var(--rz-ink); margin-bottom: 8px; }
.rzchalcard p { font-family: var(--font-sans); font-size: 13.5px; line-height: 1.65; color: #56697a; margin: 0; }

/* ---- Naming ---- */
.rzname { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.6rem,3vw,3rem); align-items: center; }
.rznameparts { display: flex; flex-direction: column; gap: 14px; }
.rznamepart { display: flex; gap: 18px; align-items: baseline; background: var(--rz-mist); border-radius: var(--radius-md);
  padding: 20px 24px; border-left: 4px solid var(--rz-blue); }
.rznamepart__k { font-family: var(--font-display); font-weight: 800; font-size: clamp(2rem,1.4rem + 2vw,3rem); color: var(--rz-blue); line-height: 1; }
.rznamepart__v { font-family: var(--font-sans); font-size: 14.5px; line-height: 1.6; color: #44576a; }

/* ---- Positioning quote + langs ---- */
.rzpullquote { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.15rem,.95rem + 1vw,1.6rem);
  line-height: 1.6; color: #fff; margin: 0; text-wrap: balance; }
.rzpullquote::before { content: "“"; display: block; font-size: 3.4em; line-height: .6; color: var(--rz-yellow); margin-bottom: .1em; }
.rzlangs { display: grid; grid-template-columns: repeat(3,1fr); gap: 1rem; margin-top: clamp(2rem,3vw,3rem); }
.rzlang { background: #fff; border: 1px solid var(--rz-line); border-radius: var(--radius-lg); padding: 22px; }
.rzlang__tag { display: inline-block; font-family: var(--font-mono); font-size: 11px; font-weight: 600; letter-spacing: .08em;
  color: var(--rz-blue); background: var(--rz-sky); border-radius: 999px; padding: 4px 12px; margin-bottom: 14px; }
.rzlang__copy { font-family: var(--font-sans); font-size: 14px; line-height: 1.7; color: var(--rz-ink); margin: 0; }
.rzscience { margin-top: clamp(2rem,3vw,3rem); background: var(--rz-mist); border-radius: var(--radius-lg);
  padding: 24px 28px; border-left: 4px solid var(--rz-yellow); font-family: var(--font-sans); font-size: 14.5px;
  line-height: 1.8; color: #44576a; }
.rzeffects { display: grid; grid-template-columns: repeat(3,1fr); gap: 1rem; margin-top: 1.2rem; }
.rzeffect { text-align: center; background: #fff; border: 1px solid var(--rz-line); border-radius: var(--radius-lg); padding: 24px 16px; }
.rzeffect b { display: block; font-family: var(--font-display); font-weight: 800; font-size: clamp(1.2rem,1rem + 1vw,1.7rem); color: var(--rz-blue); }
.rzeffect span { display: block; font-family: var(--font-sans); font-size: 13px; color: #56697a; margin-top: 6px; }

/* ---- Personas ---- */
.rzpersonas { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.4rem; margin-top: clamp(2rem,3vw,3rem); }
.rzpersona { background: var(--rz-mist); border-radius: var(--radius-xl); padding: 20px 20px 26px; text-align: center;
  border: 1px solid var(--rz-line); }
.rzpersona img { width: 100%; max-width: 240px; height: auto; margin: 0 auto; }
.rzpersona b { display: block; font-family: var(--font-display); font-weight: 700; font-size: 16px; color: var(--rz-ink); margin-top: 8px; }

/* ---- Logo feature ---- */
.rzlogo { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: clamp(1.6rem,3vw,3rem); align-items: center; }
.rzlogo__fig { background: #fff; border: 1px solid var(--rz-line); border-radius: var(--radius-xl); padding: clamp(32px,4vw,56px);
  display: grid; place-items: center; box-shadow: var(--shadow-md); }
.rzlogo__fig img { width: 100%; max-width: 300px; height: auto; }
.rzformats { list-style: none; padding: 0; margin: 1.4rem 0 0; display: flex; flex-direction: column; gap: 10px; }
.rzformats li { display: flex; align-items: center; gap: 10px; font-family: var(--font-sans); font-size: 14.5px; color: #44576a; }
.rzformats li [data-lucide] { width: 16px; height: 16px; color: var(--rz-blue); flex: none; }

/* ---- Colors ---- */
.rzcolors { display: grid; grid-template-columns: repeat(6,1fr); gap: 1rem; margin-top: clamp(2rem,3vw,3rem); }
.rzcolor__chip { height: 92px; border-radius: var(--radius-md); border: 1px solid rgba(0,0,0,.06); }
.rzcolor b { display: block; font-family: var(--font-display); font-weight: 700; font-size: 14px; color: var(--rz-ink); margin-top: 12px; }
.rzcolor .hex { display: block; font-family: var(--font-mono); font-size: 12px; color: var(--rz-navy); margin-top: 2px; }
.rzcolor p { font-family: var(--font-sans); font-size: 12.5px; line-height: 1.5; color: #6b7d8c; margin: 6px 0 0; }
.rztype { margin-top: clamp(2rem,3vw,3rem); background: #fff; border: 1px solid var(--rz-line); border-radius: var(--radius-lg);
  padding: 24px 28px; font-family: var(--font-sans); font-size: 14.5px; line-height: 1.8; color: #44576a; }

/* ---- Services ---- */
.rzmenu { margin-top: clamp(2rem,3vw,3rem); border: 1px solid var(--rz-line); border-radius: var(--radius-xl); overflow: hidden; }
.rzmenu__row { display: grid; grid-template-columns: 96px 1fr; align-items: center; gap: 16px; padding: 18px 24px;
  border-bottom: 1px solid var(--rz-line); }
.rzmenu__row:last-child { border-bottom: 0; }
.rzmenu__row:nth-child(odd) { background: var(--rz-mist); }
.rzmenu__price { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.1rem,1rem + .6vw,1.5rem); color: var(--rz-blue); }
.rzmenu__name { font-family: var(--font-sans); font-size: 15px; color: var(--rz-ink); }
.rzpills { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 1.4rem; }
.rzpill { font-family: var(--font-sans); font-size: 13.5px; font-weight: 600; color: var(--rz-blue); background: var(--rz-sky);
  border-radius: 999px; padding: 8px 18px; }
.rzpill--yellow { color: #6b6410; background: var(--rz-yellow); }

/* ---- Interior ---- */
.rzwalls { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; margin-top: clamp(2rem,3vw,3rem); }
.rzwall { background: #fff; border: 1px solid var(--rz-line); border-radius: var(--radius-lg); padding: 26px; }
.rzwall b { display: block; font-family: var(--font-display); font-weight: 700; font-size: 16px; color: var(--rz-blue); margin-bottom: 8px; }
.rzwall p { font-family: var(--font-sans); font-size: 14px; line-height: 1.7; color: #56697a; margin: 0; }
.rzsigns { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 1.4rem; }
.rzsign { font-family: var(--font-sans); font-size: 13px; color: var(--rz-navy); background: var(--rz-mist);
  border: 1px solid var(--rz-line); border-radius: 999px; padding: 8px 16px; }
.rzloc { margin-top: 1.6rem; display: flex; align-items: center; gap: 10px; font-family: var(--font-sans);
  font-size: 14px; color: var(--rz-ink); }
.rzloc [data-lucide] { width: 18px; height: 18px; color: var(--rz-blue); flex: none; }

/* ---- Results table ---- */
.rztable { margin-top: clamp(2rem,3vw,3rem); border-top: 1px solid var(--rz-line); }
.rztable__row { display: grid; grid-template-columns: 0.7fr 1.3fr; gap: 1rem; padding: 18px 4px; border-bottom: 1px solid var(--rz-line); }
.rztable__k { font-family: var(--font-display); font-weight: 700; font-size: 15px; color: var(--rz-blue); }
.rztable__v { font-family: var(--font-sans); font-size: 14.5px; line-height: 1.6; color: #44576a; }

/* ---- Insight quote ---- */
.rzquote { text-align: center; max-width: 820px; margin: 0 auto; }
.rzquote__mark { font-family: var(--font-display); font-size: 4rem; line-height: .5; color: var(--rz-yellow); }
.rzquote__text { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.4rem,1.1rem + 1.6vw,2.3rem);
  line-height: 1.4; color: #fff; margin: 1rem 0 1.4rem; text-wrap: balance; }
.rzquote__body { font-family: var(--font-sans); font-size: clamp(15px,14px + .3vw,17px); line-height: 1.9;
  color: rgba(255,255,255,.85); margin: 0 auto; max-width: 64ch; }

/* ---- Deliverables ---- */
.rzdeliver { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 28px; }
.rzdeliver li { display: flex; align-items: flex-start; gap: 10px; font-family: var(--font-sans); font-size: 14.5px;
  line-height: 1.6; color: #44576a; }
.rzdeliver li [data-lucide] { width: 18px; height: 18px; color: var(--rz-blue); flex: none; margin-top: 2px; }

/* ---- CTA ---- */
.rzcta { position: relative; background: var(--rz-blue); padding-block: clamp(2.75rem, 2rem + 3vw, 4rem); text-align: center; overflow: hidden; }
.rzcta__plug { position: absolute; left: 50%; top: 30px; transform: translateX(-50%); display: flex; gap: 12px; opacity: .85; }
.rzcta__plug span { width: 13px; height: 13px; border-radius: 999px; background: var(--rz-yellow); }
.rzcta__plug span:nth-child(2) { opacity: .7; } .rzcta__plug span:nth-child(3) { opacity: .45; }
.rzcta__inner { position: relative; z-index: 1; }
.rzcta__title { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.5rem,1.2rem + 1.8vw,2.4rem);
  color: #fff; margin: 0 0 24px; text-wrap: balance; }
.rzbtn { appearance: none; cursor: pointer; display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-sans);
  font-weight: 700; font-size: 16px; color: var(--rz-blue); background: var(--rz-yellow); border: 0; height: 56px; padding: 0 30px;
  border-radius: 999px; transition: transform var(--dur-fast), box-shadow var(--dur-fast); }
.rzbtn:hover { transform: translateY(-2px); box-shadow: 0 16px 30px -12px rgba(0,0,0,.4); }
.rzbtn [data-lucide] { width: 18px; height: 18px; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .rzhero__grid, .rzname, .rzlogo { grid-template-columns: 1fr; }
  .rzchallenge { grid-template-columns: 1fr 1fr; }
  .rzcolors { grid-template-columns: repeat(3,1fr); }
  .rzlangs, .rzeffects, .rzpersonas { grid-template-columns: 1fr; }
  .rzwalls { grid-template-columns: 1fr; }
  .rzdeliver { grid-template-columns: 1fr; }
  .rzhero__art img { max-width: 360px; }
}
@media (max-width: 560px) {
  .rzchallenge, .rzcolors { grid-template-columns: 1fr 1fr; }
  .rzmenu__row { grid-template-columns: 72px 1fr; }
  .rztable__row { grid-template-columns: 1fr; gap: 4px; }
}