/* dHShop 分類頁導購頭部系統 v1 (dhch-)
   三層:GuideRail → StyleSelect(4 型) → FilterBar(sticky)
   來源:工單 3a20c6a6 附錄 1(O Playwright 自驗版)。CC 對齊站上珊瑚色:
   --dhch-coral 由 #F0806C → #FF8674(站上 .dh-chip-selected / softdecor-tab / hero border 一致);
   --dhch-coral-bg 由 #FDF3F0 → #FFF8F6(站上 quiz hero / install 提示底色一致)。
   其餘 deep/ink/line 保留 O 的 AA 對比調校值。 */
:root{--dhch-coral:#FF8674;--dhch-coral-deep:#E2604A;--dhch-coral-ink:#C94F3D;--dhch-coral-bg:#FFF8F6;--dhch-coral-line:#F6C4B8;--dhch-ink:#3D3A38;--dhch-g600:#7D7772;--dhch-g400:#B3ACA6;--dhch-line:#EFEAE6}
/* 橫滑軌(所有層共用,永不斷行) */
.dhch-rail{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding:2px 16px;-webkit-overflow-scrolling:touch}
.dhch-rail::-webkit-scrollbar{display:none}
.dhch-sec-title{font-size:14.5px;font-weight:800;color:var(--dhch-ink);padding:0 16px;margin:8px 0 6px;display:flex;align-items:baseline;gap:8px}
.dhch-sec-title small{font-size:11px;color:var(--dhch-g400);font-weight:500}
/* A|GuideRail pill */
.dhch-pill{display:inline-flex;align-items:center;gap:5px;white-space:nowrap;border:1px solid var(--dhch-coral-line);color:var(--dhch-coral-ink);background:#fff;font-size:12.5px;font-weight:500;padding:7px 13px;border-radius:999px;cursor:pointer;transition:transform .15s,background .15s;user-select:none;text-decoration:none}
.dhch-pill:active{transform:scale(.96)}
.dhch-pill.is-on{background:var(--dhch-coral);border-color:var(--dhch-coral);color:#fff;font-weight:700}
.dhch-pill--lg{font-size:13.5px;padding:9px 18px;font-weight:600}
/* B1|StyleCard 圖卡:圖 + 固定深色 scrim + 白字左下 */
.dhch-card{position:relative;flex-shrink:0;width:104px;height:64px;border-radius:12px;overflow:hidden;cursor:pointer;border:2px solid transparent;transition:border-color .15s;user-select:none}
.dhch-card img,.dhch-card .dhch-card-im{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.dhch-card::before{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(30,20,16,.62),rgba(30,20,16,.05) 60%);z-index:1}
.dhch-card .dhch-card-lb{position:absolute;left:9px;bottom:6px;z-index:2;color:#fff;font-size:12.5px;font-weight:700;letter-spacing:.05em;text-shadow:0 1px 4px rgba(0,0,0,.4)}
.dhch-card.is-on{border-color:var(--dhch-coral)}
.dhch-card.is-on::after{content:"\2713";position:absolute;top:5px;right:5px;z-index:2;width:18px;height:18px;background:var(--dhch-coral);color:#fff;border-radius:50%;font-size:11px;display:flex;align-items:center;justify-content:center;font-weight:800}
/* B2|Swatch 色票:字一律在票下方(display:block 必留,曾修過塌陷 bug) */
.dhch-swatch{display:inline-block;flex-shrink:0;width:64px;text-align:center;cursor:pointer;user-select:none}
.dhch-swatch .dhch-swatch-dot{display:block;width:46px;height:46px;border-radius:50%;margin:0 auto;border:2px solid #fff;box-shadow:0 0 0 1px var(--dhch-line),0 2px 6px rgba(60,40,30,.08);transition:box-shadow .15s;position:relative;background-size:cover;background-position:center}
.dhch-swatch .dhch-swatch-nm{display:block;font-size:11px;color:var(--dhch-ink);font-weight:500;margin-top:6px;letter-spacing:.02em}
.dhch-swatch.is-on .dhch-swatch-dot{box-shadow:0 0 0 2px var(--dhch-coral),0 2px 6px rgba(60,40,30,.12)}
.dhch-swatch.is-on .dhch-swatch-dot::after{content:"\2713";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:14px;text-shadow:0 1px 3px rgba(0,0,0,.45)}
.dhch-swatch.is-on .dhch-swatch-nm{color:var(--dhch-coral-ink);font-weight:700}
/* C|FilterBar sticky:top=.dh-navbar 實高(JS 動態) */
.dhch-fbar{position:sticky;top:var(--dhch-sticky-top,52px);z-index:40;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--dhch-line);padding:5px 0}
.dhch-fbtn{display:inline-flex;align-items:center;gap:4px;font-size:12.5px;font-weight:600;color:var(--dhch-ink);background:#fff;border:1px solid var(--dhch-line);border-radius:999px;padding:7px 12px;cursor:pointer;white-space:nowrap}
.dhch-fbtn.is-on{background:var(--dhch-coral);border-color:var(--dhch-coral);color:#fff}
.dhch-fbtn .dhch-car{font-size:9px;color:var(--dhch-g400)}
/* applied-chips 專屬 rail(與可選 filter pill 分軌,避免混排;dhch.js 優先綁 .dhch-applied) */
.dhch-applied{display:flex;flex-wrap:wrap;gap:6px;padding:0 16px}
.dhch-applied:empty{padding:0}
.dhch-frow-lb{font-size:12px;font-weight:700;color:var(--dhch-g600);padding:2px 16px 0;letter-spacing:.03em}
.dhch-achip{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:var(--dhch-coral-ink);background:var(--dhch-coral-bg);border:1px solid var(--dhch-coral-line);border-radius:999px;padding:6px 11px;white-space:nowrap}
.dhch-achip .dhch-x{cursor:pointer;font-weight:800;opacity:.7;padding:0 2px}
.dhch-count{font-size:11.5px;color:var(--dhch-g600);padding:3px 16px 0}
.dhch-count b{color:var(--dhch-coral-ink)}
/* D|dNA 條(快診大卡壓縮版) */
.dhch-dna{margin:8px 16px 0;background:linear-gradient(120deg,#FFF3EF,#FFF9F6);border:1px solid #FADFD6;border-radius:14px;padding:9px 14px;display:flex;align-items:center;gap:10px;text-decoration:none}
.dhch-dna .dhch-dna-em{font-size:18px}
.dhch-dna .dhch-dna-tt{font-size:13px;color:var(--dhch-coral-ink);font-weight:800}
.dhch-dna .dhch-dna-ds{font-size:11px;color:var(--dhch-g600);margin-top:1px}
.dhch-dna .dhch-dna-go{margin-left:auto;font-size:11.5px;color:var(--dhch-coral-ink);font-weight:700;white-space:nowrap}
/* 桌機:rail 改換行(不缺垂直空間、無橫滑手勢) */
@media (min-width:768px){.dhch-rail{flex-wrap:wrap;overflow:visible}}