/* ==========================================================================
   page-case-*.css 基座 — 案例详情页通用结构（视觉差异由 fp 覆盖层承担）
   ========================================================================== */
.cm-hero{position:relative;min-height:520px;display:flex;align-items:flex-end;overflow:hidden;background:var(--bamboo-900)}
.cm-hero-bg{position:absolute;inset:0}
.cm-hero-bg img{width:100%;height:100%;object-fit:cover}
.cm-hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(29,52,38,.25) 0%,rgba(29,52,38,.55) 55%,rgba(29,52,38,.88) 100%)}
.cm-hero-inner{position:relative;z-index:2;padding:clamp(60px,9vw,110px) 0 clamp(40px,6vw,72px);color:var(--moon-100)}
.cm-crumb{color:rgba(247,245,238,.72);font-size:13.5px}
.cm-crumb a{color:rgba(247,245,238,.85)}
.cm-crumb a:hover{color:#fff}
.cm-hero-kicker{margin-top:18px;font-size:13px;letter-spacing:.32em;color:var(--cinnabar-400);font-weight:600}
.cm-hero-title{font-size:clamp(28px,4vw,50px);color:var(--moon-50);margin-top:10px;letter-spacing:.04em;line-height:1.25}
.cm-hero-sub{margin-top:16px;max-width:640px;color:rgba(247,245,238,.85);font-size:16.5px;line-height:1.9}
.cm-hero-cta{margin-top:26px;display:flex;gap:14px;flex-wrap:wrap}

.cm-overview-wrap{padding-block:clamp(48px,6vw,80px)}
.cm-overview-head .kicker{margin-bottom:8px}
.cm-overview-table{width:100%;border-collapse:collapse;background:#fff;margin-top:24px;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-soft)}
.cm-overview-table th{width:140px;background:var(--moon-50);color:var(--bamboo-700);font-weight:600;text-align:left;padding:16px 20px;border-top:1px solid var(--line-soft);font-family:var(--serif);font-size:15px}
.cm-overview-table td{padding:16px 20px;border-top:1px solid var(--line-soft);color:var(--ink-700);font-size:15px;line-height:1.8}

.cm-challenge{background:var(--moon-50);border-block:1px solid var(--line-soft)}
.cm-challenge-inner{display:grid;grid-template-columns:1fr 1.6fr;gap:clamp(28px,5vw,64px);align-items:start}
.cm-challenge-head .section-title{font-size:clamp(24px,2.6vw,34px)}
.cm-challenge-text p{margin-bottom:16px;color:var(--ink-700);font-size:16px;line-height:2}
.cm-challenge-text p:last-child{margin-bottom:0}

.cm-design-head{margin-bottom:28px}
.cm-design-text{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.cm-design-text p{background:var(--moon-50);border-left:3px solid var(--bamboo-500);padding:22px 24px;border-radius:0 var(--radius) var(--radius) 0;color:var(--ink-700);line-height:1.95;font-size:15.5px}

.cm-modules-head{margin-bottom:30px}
.cm-modules-list{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:18px}
.cm-mod{display:flex;gap:18px;background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius-lg);padding:24px 26px;transition:transform .25s ease,box-shadow .25s ease;box-shadow:var(--shadow-soft)}
.cm-mod:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift)}
.cm-mod-no{font-family:var(--serif);font-size:28px;font-weight:700;color:var(--cinnabar-500);line-height:1;flex-shrink:0;width:48px}
.cm-mod-body h3{font-size:18px;margin-bottom:8px;color:var(--ink-900)}
.cm-mod-body p{font-size:14.5px;color:var(--ink-500);line-height:1.85}

.cm-stats{background:var(--bamboo-900);color:var(--moon-100)}
.cm-stats .section-desc{color:rgba(247,245,238,.65)}
.cm-stats-head .kicker{color:var(--cinnabar-400)}
.cm-stats-head .section-title{color:var(--moon-50)}
.cm-stats-grid{margin-top:36px;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cm-stat{background:rgba(247,245,238,.06);border:1px solid rgba(247,245,238,.14);border-radius:var(--radius-lg);padding:26px 22px;display:flex;flex-direction:column;gap:8px}
.cm-stat-num{font-family:var(--serif);font-size:22px;color:var(--cinnabar-400);letter-spacing:.04em}
.cm-stat-label{font-size:13.5px;color:rgba(247,245,238,.7);line-height:1.6}
.cm-stat-val{font-family:var(--serif);font-size:30px;font-weight:700;color:var(--moon-50);margin-top:auto}

.cm-quote{padding-block:clamp(50px,7vw,90px);background:var(--moon-100)}
.cm-quote-block{position:relative;max-width:880px;margin-inline:auto;text-align:center}
.cm-quote-mark{font-family:var(--serif);font-size:80px;color:var(--cinnabar-500);line-height:.6;display:block;height:30px}
.cm-quote-block p{font-family:var(--serif);font-size:clamp(18px,2.2vw,24px);line-height:1.9;color:var(--ink-900);margin:18px 0}
.cm-quote-by{color:var(--ink-500);font-size:14.5px;letter-spacing:.08em}

.cm-relate-head{margin-bottom:28px}
.cm-relate-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.cm-relate{position:relative;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:3/2;display:block}
.cm-relate img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.cm-relate:hover img{transform:scale(1.06)}
.cm-relate-mask{position:absolute;inset:auto 0 0 0;padding:40px 18px 16px;background:linear-gradient(transparent,rgba(29,52,38,.85));color:var(--moon-50);font-size:15px;font-weight:600;letter-spacing:.04em}

.cm-solution{background:var(--moon-50);border-block:1px solid var(--line-soft)}
.cm-solution-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding-block:clamp(36px,5vw,60px)}
.cm-solution-title{font-size:clamp(22px,2.6vw,32px);margin-top:8px}
.cm-solution-desc{margin-top:10px;color:var(--ink-500);max-width:520px}

.cm-cta{background:linear-gradient(120deg,var(--bamboo-900),var(--bamboo-700));color:var(--moon-100);padding-block:clamp(48px,7vw,80px)}
.cm-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cm-cta-text h2{color:var(--moon-50);font-size:clamp(24px,3vw,36px)}
.cm-cta-text p{margin-top:10px;color:rgba(247,245,238,.75);max-width:560px}
.cm-cta-btns{display:flex;gap:14px;flex-wrap:wrap}

/* 响应式 */
@media (max-width:920px){
  .cm-challenge-inner{grid-template-columns:1fr}
  .cm-design-text{grid-template-columns:1fr}
  .cm-modules-list{grid-template-columns:1fr}
  .cm-stats-grid{grid-template-columns:1fr 1fr}
  .cm-relate-grid{grid-template-columns:1fr}
}
@media (max-width:560px){
  .cm-stats-grid{grid-template-columns:1fr}
  .cm-overview-table th{width:96px;font-size:13.5px}
  .cm-overview-table th,.cm-overview-table td{padding:12px 14px}
}

/* F17 阶梯式 — 层级递进 */
.cm-overview-step .cm-overview-table{transform:translateX(12px)}
.cm-modules-step .cm-modules-list{display:grid;grid-template-columns:1fr;gap:0}
.cm-modules-step .cm-mod{border-radius:var(--radius);margin-bottom:-1px;border:1px solid var(--line-soft);border-bottom:3px solid var(--bamboo-500)}
.cm-modules-step .cm-mod:nth-child(1){margin-left:0}
.cm-modules-step .cm-mod:nth-child(2){margin-left:32px}
.cm-modules-step .cm-mod:nth-child(3){margin-left:64px}
.cm-modules-step .cm-mod:nth-child(4){margin-left:96px}
.cm-modules-step .cm-mod:nth-child(5){margin-left:128px}
.cm-modules-step .cm-mod:nth-child(6){margin-left:160px}
.cm-stats-step .cm-stat{border-radius:2px;border-top:4px solid var(--cinnabar-400)}
.cm-quote-step .cm-quote-block{background:#fff;border:1px solid var(--line);padding:36px;box-shadow:var(--shadow-soft)}
.cm-cta-step .cm-cta{background:linear-gradient(180deg,var(--bamboo-700),var(--bamboo-900))}
@media (max-width:920px){.cm-modules-step .cm-mod:nth-child(n){margin-left:0}}