/* ============================================================================
   AGPS 引領航 — case study theme. Corporate navy / AGPS blue (#005296) /
   steel-blue. Data-driven, advisory, structured. Scoped to .acase.
   ============================================================================ */
.acase {
  --a-blue: #005296;        /* AGPS brand blue */
  --a-navy: #0a1f38;        /* deep navy — dark sections */
  --a-steel: #4a86c0;       /* steel-blue accent */
  --a-mist: #eef3f8;        /* light tint */
  --a-cream: #f6f8fb;
  --a-ink: #0a1f38;
  --a-text: #44546a;
  --a-line: rgba(10,31,56,.10);
  position: relative; overflow: hidden; background: #fff;
  font-family: var(--font-sans); color: var(--a-text);
}
.acase .wrap { position: relative; z-index: 1; }

/* ---- shared type ---- */
.acase .aeyebrow { font-family: var(--font-mono); font-size: 13px; font-weight: 600; letter-spacing: .16em;
  text-transform: uppercase; color: var(--a-blue); margin: 0 0 16px; }
.acase .aeyebrow--on { color: var(--a-steel); }
.acase .ah2 { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.5rem,1.1rem + 1.6vw,2.3rem);
  line-height: 1.24; letter-spacing: -0.015em; color: var(--a-ink); margin: 0 0 22px; text-wrap: balance; }
.acase .ah2--on { color: #fff; }
.acase .acase__p { font-size: clamp(15px,1vw,16.5px); line-height: 1.95; color: var(--a-text); margin: 0 0 18px; }
.acase .acase__p:last-child { margin-bottom: 0; }
.acase .akicker { display: inline-block; font-family: var(--font-mono); font-size: 12px; font-weight: 600; letter-spacing: .14em;
  text-transform: uppercase; color: #fff; background: var(--a-blue); padding: 5px 13px; border-radius: 999px; margin-bottom: 18px; }
.acase .akicker--on { background: var(--a-steel); }
.acase .alabel { display: block; font-family: var(--font-mono); font-size: 12.5px; font-weight: 600; letter-spacing: .1em;
  text-transform: uppercase; color: var(--a-text); margin: 0 0 22px; }
.acase .acenter { text-align: center; max-width: 680px; margin: 0 auto clamp(2rem,1.5rem + 2vw,3.2rem); }

/* sections + spacing utilities */
.asec { padding-block: 3rem; }
.acase .pb-gap { padding-bottom: clamp(2.5rem, 1.5rem + 4vw, 5rem); }
.acase .mt-gap { margin-top: clamp(1.5rem, 1rem + 2vw, 3rem); }
/* uniform vertical margin on every section figure/image wrapper */
.acase .ashot, .acase [class*="__fig"], .acase [class*="__media"] { margin-block: 1rem; }
.asec--mist { background: var(--a-mist); }
.asec--navy { background: var(--a-navy); }
.asec--navy .acase__p, .asec--navy .achallenge .acase__p { color: rgba(255,255,255,.82); }

/* ---- Hero ---- */
.ahero { position: relative; background: linear-gradient(165deg, var(--a-cream) 0%, #fff 100%);
  padding-block: clamp(1.5rem,1rem + 2vw,2.5rem) clamp(2.5rem,2rem + 3vw,4rem); overflow: hidden; }
.ahero__logo { position: relative; z-index: 1; display: block; height: clamp(52px, 6vw, 72px); width: auto; margin-bottom: clamp(1.5rem, 1rem + 2vw, 2.5rem); }
.aback { 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(--a-text); margin-bottom: calc(32px + 1.6rem); transition: color var(--dur-fast); }
.aback:hover { color: var(--a-blue); }
.aback [data-lucide] { width: 16px; height: 16px; }
.ahero__grid { display: block; }
.ahero__text { max-width: 820px; }
.ahero__meta { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.achip { display: inline-flex; font-family: var(--font-mono); font-size: 12px; font-weight: 600; letter-spacing: .06em;
  padding: 6px 14px; border-radius: 999px; color: #fff; background: var(--a-blue); }
.ahero__year { font-family: var(--font-mono); font-size: 13px; color: var(--a-text); }
.ahero__title { font-family: var(--font-display); font-weight: 800; font-size: clamp(2rem,1.3rem + 3.2vw,3.6rem);
  line-height: 1.1; letter-spacing: -0.025em; color: var(--a-navy); margin: 0; text-wrap: balance; }
.ahero__sub { font-size: clamp(15px,1vw,17px); line-height: 1.8; color: var(--a-text); margin: 24px 0 0; max-width: 720px; }
.ahero__svc { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: .03em; color: var(--a-steel); margin: 22px 0 0; }
.ahero__media { margin-top: clamp(2rem,1.5rem + 3vw,3.5rem); border-radius: var(--radius-xl); overflow: hidden;
  box-shadow: 0 30px 60px -28px rgba(10,31,56,.45); border: 1px solid var(--a-line); }
.ahero__media img { width: 100%; height: auto; display: block; }

/* ---- generic screenshot figure ---- */
.ashot { margin: clamp(2rem,1.5rem + 2vw,3rem) 0 0; border-radius: var(--radius-lg); overflow: hidden;
  background: #fff; box-shadow: 0 20px 48px -28px rgba(10,31,56,.4); border: 1px solid var(--a-line); }
.ashot img { width: 100%; height: auto; display: block; }
.ashot__cap { display: block; font-family: var(--font-mono); font-size: 12px; color: var(--a-text);
  padding: 12px 16px; background: var(--a-cream); border-top: 1px solid var(--a-line); }
.ashot--dark { border-color: rgba(255,255,255,.12); box-shadow: 0 24px 56px -28px rgba(0,0,0,.5); }
.ashot__cap--on { color: rgba(255,255,255,.78); background: rgba(255,255,255,.05); border-top-color: rgba(255,255,255,.1); }

/* ---- Challenge: dual-audience diagram ---- */
.achallenge { max-width: 720px; }
.aduo { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: clamp(14px,2vw,28px);
  margin-top: clamp(2rem,1.5rem + 2vw,3rem); }
.aduo__side { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius-lg);
  padding: 26px 22px; text-align: center; }
.aduo__side [data-lucide] { width: 30px; height: 30px; color: var(--a-steel); }
.aduo__side b { display: block; font-family: var(--font-display); font-weight: 700; font-size: 17px; color: #fff; margin: 12px 0 4px; }
.aduo__side span { font-size: 13.5px; color: rgba(255,255,255,.62); }
.aduo__link { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 999px;
  background: var(--a-blue); color: #fff; }
.aduo__link [data-lucide] { width: 22px; height: 22px; }

/* ---- Stack cards ---- */
.astack { margin-top: clamp(2.5rem,2rem + 3vw,4rem); }
.astack__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.astackcard { background: #fff; border: 1px solid var(--a-line); border-radius: var(--radius-lg); padding: 26px 24px;
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out); }
.astackcard:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.astackcard__ic { width: 48px; height: 48px; border-radius: var(--radius-md); display: grid; place-items: center;
  background: var(--a-mist); color: var(--a-blue); margin-bottom: 16px; }
.astackcard__ic [data-lucide] { width: 23px; height: 23px; }
.astackcard b { display: block; font-family: var(--font-display); font-weight: 700; font-size: 16px; color: var(--a-ink); margin-bottom: 8px; }
.astackcard p { font-size: 13.5px; line-height: 1.65; color: var(--a-text); margin: 0; }

/* ---- 2023 stat band ---- */
.astatrow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-bottom: clamp(2.5rem,2rem + 3vw,4rem); }
.astat { text-align: center; background: #fff; border: 1px solid var(--a-line); border-radius: var(--radius-lg); padding: 30px 18px; }
.astat__num { display: block; font-family: var(--font-mono); font-weight: 700; font-size: clamp(1.9rem,1.4rem + 1.8vw,2.8rem);
  line-height: 1; letter-spacing: -0.02em; color: var(--a-blue); }
.astat__label { display: block; font-size: 13px; color: var(--a-text); margin-top: 10px; line-height: 1.45; }

/* ---- GA gallery ---- */
.agallery { display: grid; grid-template-columns: 1fr 1fr; gap: 1.6rem; }
.agallery .ashot { margin: 0; }

/* ---- Findings ---- */
.afindings { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.afind { background: var(--a-cream); border: 1px solid var(--a-line); border-radius: var(--radius-lg); padding: 28px 26px;
  border-top: 3px solid var(--a-blue); }
.afind__stat { display: block; font-family: var(--font-mono); font-weight: 700; font-size: clamp(1.4rem,1rem + 1vw,1.8rem);
  color: var(--a-blue); letter-spacing: -0.01em; margin-bottom: 12px; }
.afind__t { font-family: var(--font-display); font-weight: 700; font-size: 17px; color: var(--a-ink); margin: 0 0 10px; line-height: 1.3; }
.afind__d { font-size: 13.5px; line-height: 1.7; color: var(--a-text); margin: 0; }

/* ---- Positioning quote ---- */
.aquote { position: relative; max-width: 880px; margin: clamp(2.5rem,2rem + 3vw,4rem) auto 0; text-align: center; padding: 0 clamp(1rem,3vw,3rem); }
.aquote__mark { font-family: var(--font-display); font-size: 80px; line-height: 0.6; color: var(--a-steel); opacity: .5; }
.aquote__text { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.5rem,1.1rem + 1.8vw,2.4rem);
  line-height: 1.32; letter-spacing: -0.015em; color: #fff; margin: 8px 0 20px; text-wrap: balance; }
.aquote__sub { font-size: clamp(14px,1vw,15.5px); line-height: 1.8; color: rgba(255,255,255,.7); margin: 0 auto; max-width: 620px; }

/* ---- Hatena architecture diagram ---- */
.ahatena { display: flex; flex-direction: column; align-items: center; margin-top: clamp(1rem,1vw,2rem); }
.ahatena__mother { display: inline-flex; align-items: center; gap: 12px; background: var(--a-blue); color: #fff;
  padding: 20px 32px; border-radius: var(--radius-lg); box-shadow: 0 18px 40px -18px rgba(0,82,150,.55); }
.ahatena__mother [data-lucide] { width: 24px; height: 24px; }
.ahatena__mother b { font-family: var(--font-display); font-weight: 700; font-size: clamp(15px,1.2vw,18px); }
.ahatena__stem { width: 2px; height: 40px; background: var(--a-line); }
.ahatena__subs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; width: 100%; max-width: 820px; }
.ahatena__sub { display: flex; align-items: center; gap: 10px; background: #fff; border: 1px solid var(--a-line);
  border-radius: var(--radius-md); padding: 18px 22px; font-family: var(--font-display); font-weight: 600;
  font-size: 15px; color: var(--a-ink); }
.ahatena__dot { width: 9px; height: 9px; border-radius: 999px; background: var(--a-steel); flex: none; }

/* ---- EXP methodology ---- */
.aexp { display: flex; flex-direction: column; gap: 14px; max-width: 880px; margin: 0 auto; }
.aexp__step { display: flex; gap: 22px; align-items: flex-start; background: #fff; border: 1px solid var(--a-line);
  border-radius: var(--radius-lg); padding: 24px 28px; transition: transform var(--dur-base) var(--ease-out); }
.aexp__step:hover { transform: translateX(6px); }
.aexp__n { font-family: var(--font-mono); font-weight: 700; font-size: 22px; color: var(--a-steel); flex: none; line-height: 1.1; }
.aexp__body b { display: block; font-family: var(--font-display); font-weight: 700; font-size: 17px; color: var(--a-ink); margin-bottom: 6px; }
.aexp__body p { font-size: 14px; line-height: 1.65; color: var(--a-text); margin: 0; }

/* ---- Flagship service card ---- */
.aflagship { max-width: 880px; margin: clamp(2rem,1.5rem + 2vw,3rem) auto 0; background: var(--a-navy);
  border-radius: var(--radius-xl); padding: clamp(28px,3vw,44px); color: #fff; }
.aflagship__head { display: flex; align-items: baseline; flex-wrap: wrap; gap: 14px; margin-bottom: 16px; }
.aflagship__tag { font-family: var(--font-mono); font-size: 12px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  color: var(--a-steel); width: 100%; }
.aflagship__title { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.4rem,1.1rem + 1.4vw,2rem); color: #fff; margin: 0; }
.aflagship__price { font-family: var(--font-mono); font-weight: 700; font-size: clamp(15px,1.2vw,18px); color: var(--a-steel); }
.aflagship__desc { font-size: 14.5px; line-height: 1.8; color: rgba(255,255,255,.78); margin: 0; }

/* ---- Deliverables ---- */
.adeliver { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem,1rem + 3vw,3.5rem); }
.adeliver__col { background: #fff; border: 1px solid var(--a-line); border-radius: var(--radius-lg); padding: 32px 30px; }
.adeliver__head { font-family: var(--font-display); font-weight: 700; font-size: 17px; color: var(--a-blue); margin: 0 0 20px;
  padding-bottom: 16px; border-bottom: 1px solid var(--a-line); }
.alist { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 13px; }
.alist li { display: flex; gap: 12px; align-items: flex-start; font-size: 14px; line-height: 1.6; color: var(--a-text); }
.alist li [data-lucide] { width: 18px; height: 18px; flex: none; color: var(--a-blue); margin-top: 2px; }

/* ---- Result ---- */
.aresult { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 1.6rem; align-items: center; }
.aresult__badge { display: inline-flex; align-items: flex-start; gap: 10px; margin-top: 24px; font-size: 13.5px; line-height: 1.5;
  color: #fff; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16); border-radius: var(--radius-md); padding: 14px 18px; }
.aresult__badge [data-lucide] { width: 18px; height: 18px; color: var(--a-steel); flex: none; margin-top: 1px; }
.aresult .ashot { margin: 0; }

/* ---- CTA ---- */
.acta { position: relative; background: linear-gradient(160deg, var(--a-blue) 0%, var(--a-navy) 100%);
  padding-block: clamp(2.5rem, 1.5rem + 4vw, 5rem); text-align: center; overflow: hidden; }
.acta__inner { position: relative; z-index: 1; }
.acta__title { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.6rem,1.2rem + 2vw,2.6rem);
  color: #fff; margin: 0 0 28px; text-wrap: balance; }
.abtn { appearance: none; cursor: pointer; display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-sans);
  font-weight: 600; font-size: 16px; color: var(--a-blue); background: #fff; border: 0; height: 56px; padding: 0 30px;
  border-radius: 999px; box-shadow: 0 16px 32px -14px rgba(0,0,0,.4); transition: all var(--dur-base) var(--ease-out); }
.abtn:hover { transform: translateY(-2px); box-shadow: 0 22px 40px -16px rgba(0,0,0,.5); }
.abtn [data-lucide] { width: 18px; height: 18px; }

@media (max-width: 880px) {
  .astack__grid { grid-template-columns: 1fr 1fr; }
  .astatrow { grid-template-columns: 1fr 1fr; }
  .agallery { grid-template-columns: 1fr; }
  .afindings { grid-template-columns: 1fr; }
  .ahatena__subs { grid-template-columns: 1fr; }
  .adeliver { grid-template-columns: 1fr; }
  .aresult { grid-template-columns: 1fr; gap: 32px; }
  .aduo { grid-template-columns: 1fr; }
  .aduo__link { transform: rotate(90deg); margin: 0 auto; }
}
@media (max-width: 520px) {
  .astack__grid { grid-template-columns: 1fr; }
  .astatrow { grid-template-columns: 1fr; }
}