/*
 * Booker 布克今日 · 整合自訂樣式 (防污染版 v2)
 * 子主題 custom.css
 * ==========================================
 *
 * ── 修改記錄 ──
 * [v3.0] 2026-05-27 15:32 | Antigravity AI | Header Logo 與選單垂直置中修正
 *   - 正常 Header：覆寫主題 .logo 的 line-height:0，加 flex 置中
 *   - 正常 Header：處理 span.mainLogo 層的 flex 置中
 *   - Sticky Header：Logo 用 line-height + vertical-align 置中（不用 flex，避免破壞 float 佈局）
 *   - Sticky Header：nav 清除 padding/margin 偏移
 *   - 容器高度明確化（.mainHeader / .btLogoArea 加 min-height）
 *   - 選擇器從 .btMenuHorizontal 改為 .mainHeader 前綴（更穩定）
 *   - 移除 .menuPort 的 display:flex（會破壞主題 float layout）
 *   - [v4.0] 提高 sticky 選單 <a> 的層級，強制 height: auto，解決 hover 背景填滿的問題
 *   - [v6.0] 擴展漢堡選單顯示區間至 1199px，解決平板區間消失問題。移除會導致兩條線的圖示 border 覆寫。
 *   - [v7.0] 修正漢堡選單變成方形色塊的問題：顏色只套用到內層線條，不塗滿外層容器。
 *   - [v8.0] 修正正常狀態漢堡圖示為白色的問題：改用 CSS filter 進行安全的顏色轉換，保留三條線結構並恆定橘色。
 *   - [v9.0] 修正選單打開後左側漢堡圖示未消失的問題：加上側選單開啟狀態 (btMenuVerticalOn) 的隱藏設定。
 *   - [v10.0] 修正 v9 導致 X 關閉按鈕消失的問題：還原隱藏規則，改為徹底隱藏多餘的 .btVerticalMenuTrigger。
 *   - [v11.0] 修正 v10 誤將真正手機版選單隱藏導致消失的問題：還原 .btVerticalMenuTrigger，改為隱藏產生幽靈符號的 .btHorizontalMenuTrigger。
 *   - [v12.0] 修正手機版「三項特色 (.bk-value-grid)」變成兩欄的問題：在 600px 以下強制改為單欄 (1fr)。
 *   - [v13.0] 徹底解決漢堡選單邏輯衝突：移除所有強制顯示與隱藏的 CSS，單純保留 filter 變色，將顯示與 X 轉換邏輯交還給主題原生控制。
 *   - [v14.0] 修正 v13 導致往下滑 (Sticky) 時漢堡選單消失的問題：還原 v11 的成功邏輯，強制顯示 .btVerticalMenuTrigger 並隱藏 .btHorizontalMenuTrigger，克服主題原生 bug。
 *   - [v15.0] 漢堡選單終極防護解：強制雙觸發器顯示與圖層防護 (z-index) 以徹底對抗 Sticky Bug，並精準隱藏開啟狀態下的幽靈符號以保留 X。
 *   - [v16.0] 修正 v15 導致「開啟後大 X 無法變形出現」的混亂問題：移除過度干預的圖層與偽元素防護，回歸最純粹的雙顯示機制，讓主題原生特效能順利將三條線變形成 X。
 *   - [v17.0] 真相大白終極版：.btVerticalMenuTrigger 才是真正的主角（同時是漢堡與 X），加上 z-index 防護避免 Sticky 消失；並徹底隱藏會造成畫面混亂的幽靈符號 .btHorizontalMenuTrigger。
 *   - [v18.0] 修正 Sticky 狀態下手機版選單內容交疊問題：為清除 menuPort nav 偏移的 CSS 加上 .btMenuHorizontal 前綴，確保只在電腦版生效，恢復手機版預設的排版間距。
 *   - [v19.0] 修正 Sticky 狀態下手機版側邊選單被嚴重擠壓交疊的問題：將限制 Sticky Header 高度 56px 的規則加上 .btMenuHorizontal，避免誤殺手機版的展開側邊選單高度。
 *   - [v20.0] 修正導致手機側邊選單擠壓的終極元兇：RWD 區塊 (max-width: 960px) 中誤將所有 .btLogoArea 在 Sticky 時限制為 50px。現加上 .btVerticalHeaderTop 限定，成功釋放側選單高度！
 *   - [v21.0] 新增全站共用 Footer (PART 3) 樣式，統一管理背景黑灰與文字顏色，並支援 RWD。
 *   - [v22.0] 新增側邊欄 (Sidebar) 專屬樣式 (PART 4)，包含權威簡介、核心 CTA 與工具推薦等高轉換率區塊。
 * ==========================================
 */

/* ── 字型載入 ── */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+TC:wght@300;400;600;700;900&family=Noto+Sans+TC:wght@300;400;500;700&display=swap');

/* ══════════════════════════════════════
   全站共用變數與基礎設定
   ══════════════════════════════════════ */
:root {
  --bk-orange: #e88600;
  --bk-orange-light: #FF9806;
  --bk-orange-pale: #fff8ee;
  --bk-orange-dim: rgba(232, 134, 0, 0.12);
  --bk-ink: #1a1a16;
  --bk-ink2: #3c3c34;
  --bk-muted: #7a7a6e;
  --bk-border: #e8e4dc;
  --bk-bg: #f8f5ee;
  --bk-white: #fdfcf8;
  --bk-serif: 'Noto Serif TC', serif;
  --bk-sans: 'Noto Sans TC', sans-serif;
  --bk-radius: 6px;
}

html {
  scroll-behavior: smooth;
}

/* body 基礎字體，對齊 HTML 版 */
body {
  font-family: 'Noto Sans TC', sans-serif;
  color: #1a1a16;
}

/* ══════════════════════════════════════
   PART 1: Denticare 主題與原生元件強制覆寫 (保留你原有的設定)
   ══════════════════════════════════════ */

/* 標題與文章列設定 */
h3 {
  line-height: 1.3;
  letter-spacing: 0.05em;
}

.btPostListColumns .btArticleContentHolder {
  display: none;
}

.btArticleMedia {
  display: none;
}

/* 導覽列與 Logo 區域設定 */
/* .btMenuVertical .mainHeader .btLogoArea { box-shadow: 0 100px #e88600 inset; } ← 已停用，避免 Logo 區橘色 */
.btMenuHorizontal .menuPort nav ul li {
  padding-top: 10px;
  padding-bottom: 10px;
}

/* Logo 區域上方邊距（水平選單不需要，垂直選單用） */
@media (min-width: 1200px) {
  .btLogoArea {
    margin-top: 0;
  }
}

/* Header 上色（TopBar 橘色保留，mainHeader 白底） */
.topBar,
.topBarHolder,
.btTopBar,
.btTopBar .btTopBarInner,
#topBar {
  background: #FF9806 !important;
  background-image: none !important;
}

.mainHeader,
.mainHeader .btLogoArea,
.btLogoArea,
#mainHeader {
  background: #ffffff !important;
  background-image: none !important;
}

.btStickyMenuOn .mainHeader,
.btStickyMenuOn .btLogoArea,
.btLogoArea.menuHolder.btClear {
  background: #ffffff !important;
  background-image: none !important;
}

.btAccentGradientHeader .mainHeader,
.btAccentGradientHeader .btVerticalHeaderTop {
  background: #ffffff !important;
  background-image: none !important;
}

/* ── Header 容器高度 ──  @modified 2026-05-27 Antigravity AI */
.mainHeader,
.mainHeader .btLogoArea,
.btLogoArea.menuHolder {
  min-height: 76px !important;
}

/* ── 正常 Header：Logo 垂直置中 ──  @modified 2026-05-27 Antigravity AI */
/* 主題預設 .logo 有 float:left + line-height:0，導致 Logo 偏上 */
.mainHeader .btLogoArea .logo {
  display: flex !important;
  align-items: center !important;
  height: 76px !important;
  line-height: normal !important;
}

/* Logo <img> 外包了 <span class="mainLogo"> 和 <a>，都要 flex 置中 */
.mainHeader .btLogoArea .logo a,
.mainHeader .btLogoArea .logo>span,
.mainHeader .btLogoArea .logo .mainLogo {
  display: flex !important;
  align-items: center !important;
}

.mainHeader .btLogoArea .logo img {
  margin-top: 0 !important;
  margin-bottom: 0 !important;
  vertical-align: middle !important;
}

/* Logo：不設 margin-top（垂直選單用） */
.btMenuVertical .mainHeader .logo img {
  margin-top: 0 !important;
}

/* ── 所有 <li> 撐滿 header 高度，子元素 flex 置中 ── */
.btMenuHorizontal .menuPort>nav>ul>li {
  display: inline-flex !important;
  align-items: center !important;
  height: 76px !important;
}

/* ── 所有 <a> 統一 padding，不設高度，自然置中 ── */
.btMenuHorizontal .menuPort>nav>ul>li>a {
  display: inline-block !important;
  padding: 9px 16px !important;
  line-height: 1.4 !important;
  font-weight: 400 !important;
  color: #3c3c34 !important;
}

/* ── menu-cta：只加顏色和圓角，padding 跟其他一樣 ── */
.mainHeader .menu>li.menu-cta>a,
.menuPort nav ul li.menu-cta>a {
  background: #e88600 !important;
  color: #ffffff !important;
  border-radius: 4px !important;
  font-weight: 700 !important;
}

.mainHeader .menu>li.menu-cta>a:hover,
.menuPort nav ul li.menu-cta>a:hover {
  background: #FF9806 !important;
  color: #ffffff !important;
}

/* ── sticky：容器 56px，同樣 flex 置中（提高層級） ──  @modified 2026-05-27 Antigravity AI v4 */
.btStickyHeaderActive.btMenuHorizontal .mainHeader .btLogoArea .menuPort nav>ul>li {
  height: 56px !important;
  display: inline-flex !important;
  align-items: center !important;
}

.btStickyHeaderActive.btMenuHorizontal .mainHeader .btLogoArea .menuPort nav>ul>li>a {
  display: inline-block !important;
  padding: 8px 14px !important;
  line-height: 1.4 !important;
  height: auto !important;
  font-weight: 400 !important;
  color: #1a1a16 !important;
}

/* sticky menu-cta */
.btStickyHeaderActive .menuPort nav ul li.menu-cta>a,
.btStickyHeaderActive.btMenuHorizontal .mainHeader .btLogoArea .menuPort nav>ul>li.menu-cta>a {
  background: #e88600 !important;
  color: #ffffff !important;
  border-radius: 4px !important;
  font-weight: 700 !important;
}

/* ── Sticky：Logo 垂直置中 ──  @modified 2026-05-27 Antigravity AI v3 */
/* 不用 flex（會破壞主題 float layout），改用 line-height + vertical-align */
.btStickyHeaderActive .mainHeader .btLogoArea .logo {
  height: 56px !important;
  line-height: 56px !important;
}

.btStickyHeaderActive .mainHeader .btLogoArea .logo>span,
.btStickyHeaderActive .mainHeader .btLogoArea .logo .mainLogo {
  display: inline-block !important;
  line-height: 56px !important;
  vertical-align: middle !important;
}

.btStickyHeaderActive .mainHeader .btLogoArea .logo a {
  display: inline-block !important;
  line-height: 56px !important;
  vertical-align: middle !important;
}

.btStickyHeaderActive .mainHeader .btLogoArea .logo img {
  height: 40px !important;
  width: auto !important;
  margin: 0 !important;
  vertical-align: middle !important;
}

/* ── Sticky：nav 清除偏移（不碘 menuPort 的 display） ──  @modified 2026-05-27 Antigravity AI v3 */
.btStickyHeaderActive.btMenuHorizontal .mainHeader .menuPort>nav {
  padding-top: 0 !important;
  padding-bottom: 0 !important;
  margin-top: 0 !important;
  margin-bottom: 0 !important;
}

/* 選單文字顏色（TopBar 白色保持，主選單用深灰） */
.topBarInMenuCell,
.topBar a,
.btTopBar a,
.topBar,
.btTopBar {
  color: rgba(255, 255, 255, 0.75) !important;
}

.mainHeader .menu>li>a,
.menuPort nav ul li a {
  color: #3c3c34 !important;
  font-weight: 400 !important;
}

/* 手機版展開側欄白底 */
.btVerticalHeaderTop,
.btStickyHeaderOpen .btVerticalHeaderTop {
  background: #ffffff !important;
}

.btVerticalHeaderTop .menu a,
.btVerticalHeaderTop nav ul li a {
  color: #1a1a16 !important;
}

.topBar .btTopBox.widget_text,
.topBar .textwidget,
.topBar .textwidget p {
  line-height: 1 !important;
  margin: 0 !important;
  padding: 0 !important;
  display: flex !important;
  align-items: center !important;
  height: 100% !important;
}

.btMenuHorizontal .btFocusElement,
.btMenuHorizontal .menuPort>nav>ul>li .btFocusElement,
.btFocusElement {
  background: #e88600 !important;
  opacity: 1 !important;
}

.btMenuHorizontal .menuPort>nav>ul>li>a:hover,
.btMenuHorizontal .menuPort>nav>ul>li>a:focus,
.btMenuHorizontal .menuPort>nav>ul>li.current-menu-item>a,
.btMenuHorizontal .menuPort>nav>ul>li.current-menu-ancestor>a {
  background: #e88600 !important;
  color: #ffffff !important;
}

/* Sticky Header 尺寸 */
.btStickyHeaderActive.btMenuHorizontal .mainHeader,
.btStickyHeaderActive.btMenuHorizontal .btLogoArea,
.btStickyHeaderActive.btMenuHorizontal .menuHolder {
  min-height: 56px !important;
  height: 56px !important;
  overflow: visible !important;
}

/* sticky hover 橘底白字 */
.btStickyHeaderActive.btMenuHorizontal .mainHeader .btLogoArea .menuPort nav>ul>li>a:hover,
.btStickyHeaderActive.btMenuHorizontal .mainHeader .btLogoArea .menuPort nav>ul>li>a:focus,
.btStickyHeaderActive.btMenuHorizontal .mainHeader .btLogoArea .menuPort nav>ul>li.current-menu-item>a {
  background: #e88600 !important;
  color: #ffffff !important;
}

/* hover 橘色（通用，menu-cta 除外已有獨立設定） */

/* RWD Header 修正 */
@media (max-width: 960px) {

  .btVerticalHeaderTop,
  .btLogoArea,
  .btLogoArea.menuHolder {
    width: 100% !important;
    max-width: 100% !important;
    left: 0 !important;
    right: 0 !important;
    box-sizing: border-box !important;
  }

  .btStickyHeaderOpen .btVerticalHeaderTop,
  .btStickyHeaderOpen .btLogoArea {
    width: 100% !important;
    max-width: 100% !important;
  }

  .btStickyHeaderActive .btVerticalHeaderTop .btLogoArea,
  .btStickyHeaderOpen .btVerticalHeaderTop .btLogoArea {
    min-height: 50px !important;
    height: 50px !important;
    padding: 0 !important;
  }
}

@media (max-width: 1199px) {
  .btVerticalHeaderTop {
    width: 100% !important;
    max-width: none !important;
    box-sizing: border-box !important;
  }

  /* ── 手機/平板漢堡選單修復 (涵蓋 1199px 以下) ── @modified 2026-05-27 v17 */
  /* [v17] 真相大白：
     1. .btVerticalMenuTrigger 才是真正的手機版觸發器「以及」 X 關閉按鈕。必須確保它在 Sticky 時有足夠的 z-index 不被覆蓋，且絕對不能在選單打開時隱藏它。
     2. .btHorizontalMenuTrigger 是專屬於電腦版的觸發器，在手機版出現只會變成無法關閉的「幽靈三條線」，必須徹底隱藏。 */
  .btVerticalMenuTrigger {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: relative !important;
    z-index: 9999 !important; /* 確保 Sticky 狀態下不被白底 .btLogoArea 遮擋 */
    pointer-events: auto !important;
    transition: opacity 0.3s ease !important;
    filter: brightness(0) invert(55%) sepia(84%) saturate(1915%) hue-rotate(8deg) brightness(98%) contrast(97%) !important;
  }
  
  .btVerticalMenuTrigger .bt_bb_icon {
    background-color: transparent !important;
  }
  
  /* 徹底隱藏屬於電腦版的水平選單觸發器，避免在手機版變成無法變形的幽靈符號 */
  .btHorizontalMenuTrigger {
    display: none !important;
  }
}

/* Google 地圖容器 */
.map-container {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
}

.map-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* 回TOP按鈕 */
.bk-back-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bk-orange);
  color: #fff;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  text-decoration: none;
  z-index: 999;
  box-shadow: 0 4px 12px rgba(232, 134, 0, 0.4);
  opacity: 0;
  transition: background 0.2s, transform 0.2s, opacity 0.3s;
}

.bk-back-top:hover {
  background: var(--bk-orange-light);
  transform: translateY(-3px);
}


/* ══════════════════════════════════════
   PART 2: 自訂版面組件 (全數加上 .bk- 命名空間防護)
   ══════════════════════════════════════ */

/* ── 基礎文字與區塊 ── */
.bk-text-base {
  font-family: var(--bk-sans);
  color: var(--bk-ink);
  line-height: 1.8;
  font-weight: 300;
}

.bk-section {
  padding: 4rem 2rem;
}

.bk-section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.bk-eyebrow {
  font-family: var(--bk-sans);
  font-size: 0.68rem;
  color: var(--bk-orange);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.bk-eyebrow::before {
  content: '';
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--bk-orange);
}

.bk-section-h2 {
  font-family: var(--bk-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 600;
  color: var(--bk-ink);
  line-height: 1.35;
  margin-bottom: 0.8rem;
}

.bk-section-lead {
  font-family: var(--bk-sans);
  font-size: 0.95rem;
  color: var(--bk-muted);
  line-height: 1.9;
}

/* ── HERO ── */
.bk-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: 0;
}

.bk-hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('https://tools.givemepower.net/assets/images/books-and-bookshelves.jpg');
  background-size: cover;
  background-position: center;
}

.bk-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(12, 10, 5, 0.88) 0%, rgba(18, 12, 2, 0.72) 55%, rgba(180, 90, 0, 0.18) 100%);
}

.bk-hero-grain {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 200px;
}

.bk-hero-content {
  position: relative;
  z-index: 2;
  padding: 5rem 3rem;
  width: 100%;
  max-width: 820px;
  text-align: center;
}

.bk-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--bk-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--bk-orange-light);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: bkHeroFade 0.6s 0.2s forwards;
}

.bk-hero-eyebrow::before {
  content: '';
  display: block;
  width: 32px;
  height: 1.5px;
  background: var(--bk-orange-light);
}

.bk-hero h1 {
  font-family: var(--bk-serif);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: bkHeroFade 0.7s 0.35s forwards;
  text-align: center;
}

.bk-hero h1 em {
  font-style: normal;
  color: var(--bk-orange-light);
  position: relative;
}

.bk-hero h1 em::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--bk-orange-light);
  opacity: 0.5;
}

.bk-hero-sub {
  font-family: var(--bk-sans);
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.68);
  line-height: 2;
  max-width: 520px;
  margin: 0 auto 3rem;
  opacity: 0;
  animation: bkHeroFade 0.7s 0.5s forwards;
}

.bk-hero-sub strong {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}

.bk-hero-btns {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: bkHeroFade 0.6s 0.65s forwards;
  justify-content: center;
}

.bk-hero-trust {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: bkHeroFade 0.6s 0.8s forwards;
  justify-content: center;
}

.bk-trust-item {
  font-family: var(--bk-sans);
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.78rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.bk-trust-dot {
  width: 5px;
  height: 5px;
  background: var(--bk-orange-light);
  border-radius: 50%;
  flex-shrink: 0;
}

@keyframes bkHeroFade {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── 按鈕系統 ── */
.bk-btn-orange {
  font-family: var(--bk-sans);
  display: inline-block;
  background: var(--bk-orange);
  color: #fff !important;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 14px 30px;
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
  letter-spacing: 0.04em;
}

.bk-btn-orange:hover {
  background: var(--bk-orange-light);
  transform: translateY(-2px);
  color: #fff !important;
}

.bk-btn-ghost {
  font-family: var(--bk-sans);
  display: inline-block;
  background: transparent;
  color: rgba(255, 255, 255, 0.75) !important;
  font-size: 0.9rem;
  padding: 13px 30px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  text-decoration: none;
  transition: all 0.2s;
  letter-spacing: 0.04em;
}

.bk-btn-ghost:hover {
  background: var(--bk-orange);
  color: #fff !important;
  border-color: var(--bk-orange);
}

/* ── STATS BAR ── */
.bk-stats-bar {
  background: var(--bk-white);
  border-bottom: 1px solid var(--bk-border);
}

.bk-stats-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.bk-stat-item {
  text-align: center;
  padding: 1.6rem 1rem;
  border-right: 1px solid var(--bk-border);
}

.bk-stat-item:last-child {
  border-right: none;
}

.bk-stat-num {
  font-family: var(--bk-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--bk-orange);
  line-height: 1;
}

.bk-stat-label {
  font-family: var(--bk-sans);
  font-size: 0.78rem;
  color: var(--bk-muted);
  margin-top: 0.3rem;
  letter-spacing: 0.04em;
}

/* ── VALUE CARDS (我解決的問題) ── */
.bk-value-section {
  background: var(--bk-white);
}

.bk-value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  margin-top: 2.5rem;
}

.bk-value-card {
  background: var(--bk-bg);
  border: 1px solid var(--bk-border);
  border-radius: 8px;
  padding: 1.8rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
}

.bk-value-card:hover {
  border-color: var(--bk-orange-light);
  transform: translateY(-3px);
}

.bk-value-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--bk-orange);
}

.bk-value-num {
  font-family: var(--bk-serif);
  font-size: 3rem;
  font-weight: 700;
  color: rgba(232, 134, 0, 0.07);
  position: absolute;
  top: 1rem;
  right: 1.2rem;
  line-height: 1;
}

.bk-value-title {
  font-family: var(--bk-sans);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--bk-ink);
  margin-bottom: 0.5rem;
}

.bk-value-body {
  font-family: var(--bk-sans);
  font-size: 0.85rem;
  color: var(--bk-muted);
  line-height: 1.85;
}

/* ── ABOUT ── */
.bk-about-section {
  background: var(--bk-bg);
}

.bk-about-hi-wrap {
  margin-top: 2.5rem;
}

.bk-about-hi-block {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 3.5rem;
  align-items: start;
}

.bk-about-photo-wrap {
  position: relative;
  width: 240px;
  flex-shrink: 0;
}

.bk-about-photo {
  width: 240px;
  height: 300px;
  background: var(--bk-border);
  border-radius: 8px;
  overflow: hidden;
}

.bk-about-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.bk-about-badge {
  position: absolute;
  bottom: -1rem;
  right: -1rem;
  background: var(--bk-orange);
  color: #fff;
  border-radius: 8px;
  padding: 1rem 1.2rem;
  text-align: center;
  box-shadow: 0 4px 20px rgba(232, 134, 0, 0.35);
}

.bk-about-badge-num {
  font-family: var(--bk-serif);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}

.bk-about-badge-label {
  font-family: var(--bk-sans);
  font-size: 0.75rem;
  opacity: 0.85;
  margin-top: 0.2rem;
}

.bk-about-text-col {
  display: flex;
  flex-direction: column;
}

.bk-about-hi-row {
  display: block;
  margin-bottom: 0.6rem;
  overflow: hidden;
}

.bk-about-hi-letter {
  font-family: var(--bk-serif);
  font-size: clamp(3.2rem, 6vw, 4.5rem);
  font-weight: 700;
  color: var(--bk-orange);
  line-height: 0.85;
  float: left;
  margin-right: 0.2em;
  margin-top: 0.08em;
}

.bk-about-hi-rest {
  font-family: var(--bk-sans);
  font-size: 0.95rem;
  color: var(--bk-ink2);
  line-height: 1.95;
}

.bk-about-text p {
  font-family: var(--bk-sans);
  font-size: 0.95rem;
  color: var(--bk-ink2);
  line-height: 1.95;
  margin-bottom: 1.1rem;
}

.bk-about-quote {
  background: var(--bk-orange-pale);
  border-left: 3px solid var(--bk-orange);
  padding: 1.1rem 1.4rem;
  border-radius: 0 6px 6px 0;
  margin: 1.2rem 0;
  font-family: var(--bk-serif);
  font-size: 1rem;
  color: #cc7a00;
  font-weight: 400;
  line-height: 1.7;
}

.bk-about-bottom {
  margin-top: 3rem;
  border-top: 1px solid var(--bk-border);
  padding-top: 2.5rem;
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 1.5rem;
}

.bk-about-bg p {
  font-family: var(--bk-sans);
  font-size: 0.95rem;
  color: var(--bk-ink2);
  line-height: 2;
  margin-top: 1rem;
}

.bk-cred-card {
  background: var(--bk-white);
  border: 1px solid var(--bk-border);
  border-left: 3px solid var(--bk-orange);
  border-radius: 4px;
  padding: 0.65rem 0.9rem;
}

.bk-cred-cat {
  font-family: var(--bk-sans);
  font-size: 0.7rem;
  color: var(--bk-orange);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.bk-cred-name {
  font-family: var(--bk-sans);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--bk-ink);
  line-height: 1.4;
}

/* ── CASES (實績案例) ── */
.bk-cases-section {
  background: var(--bk-white);
}

.bk-cases-list {
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.bk-case-item {
  display: grid;
  grid-template-columns: 240px 1fr;
  border: 1px solid var(--bk-border);
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.bk-case-item:hover {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

.bk-case-photo {
  position: relative;
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bk-case-badge-overlay {
  font-family: var(--bk-sans);
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--bk-orange);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 3px;
  letter-spacing: 0.06em;
}

.bk-case-body {
  padding: 1.8rem 2.2rem;
  background: var(--bk-white);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.bk-case-cat {
  font-family: var(--bk-sans);
  font-size: 0.68rem;
  color: var(--bk-orange);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.bk-case-title {
  font-family: var(--bk-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--bk-ink);
  margin-bottom: 0.7rem;
  line-height: 1.4;
}

.bk-case-desc {
  font-family: var(--bk-sans);
  font-size: 0.87rem;
  color: var(--bk-muted);
  line-height: 1.85;
  margin-bottom: 1rem;
}

.bk-case-results {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.bk-result-chip {
  background: var(--bk-orange-pale);
  border: 1px solid rgba(255, 152, 6, 0.2);
  border-radius: 4px;
  padding: 0.45rem 0.9rem;
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
}

.bk-result-num {
  font-family: var(--bk-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--bk-orange);
}

.bk-result-label {
  font-family: var(--bk-sans);
  font-size: 0.72rem;
  color: #cc7a00;
}

/* ── SERVICES (服務方式) ── */
.bk-service-section-new {
  background: var(--bk-white);
}

.bk-pain-block {
  margin-top: 2rem;
  margin-bottom: 2.8rem;
  background: var(--bk-bg);
  border: 1px solid var(--bk-border);
  border-radius: 8px;
  padding: 1.8rem 2rem;
}

.bk-pain-block-title {
  font-family: var(--bk-sans);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--bk-muted);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.bk-pain-list {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.bk-pain-item {
  font-family: var(--bk-sans);
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  font-size: 0.9rem;
  color: var(--bk-ink2);
  line-height: 1.7;
}

.bk-pain-dot {
  width: 6px;
  height: 6px;
  background: var(--bk-orange);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 0.55rem;
}

.bk-pain-closing {
  font-family: var(--bk-sans);
  margin-top: 1.2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--bk-border);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--bk-ink);
  line-height: 1.7;
}

.bk-pain-closing em {
  font-style: normal;
  color: var(--bk-orange);
}

.bk-svc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}

.bk-svc-card {
  background: var(--bk-white);
  border: 1px solid var(--bk-border);
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
  display: flex;
  flex-direction: column;
}

.bk-svc-card:hover {
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.08);
  transform: translateY(-3px);
}

.bk-svc-card.bk-featured {
  border-color: var(--bk-orange);
  box-shadow: 0 0 0 1px var(--bk-orange);
}

.bk-svc-card-top {
  padding: 1.5rem 1.6rem 1.2rem;
}

.bk-svc-card:not(.bk-featured) .bk-svc-card-top {
  background: var(--bk-bg);
}

.bk-svc-card.bk-featured .bk-svc-card-top {
  background: var(--bk-orange);
}

.bk-svc-card-name {
  font-family: var(--bk-sans);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
}

.bk-svc-card:not(.bk-featured) .bk-svc-card-name {
  color: var(--bk-ink);
}

.bk-svc-card.bk-featured .bk-svc-card-name {
  color: #fff;
}

.bk-svc-badge {
  font-family: var(--bk-sans);
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 2px 8px;
  border-radius: 3px;
  margin-bottom: 0.6rem;
}

.bk-svc-card:not(.bk-featured) .bk-svc-badge {
  background: var(--bk-orange-pale);
  color: var(--bk-orange);
}

.bk-svc-card.bk-featured .bk-svc-badge {
  background: rgba(255, 255, 255, 0.25);
  color: #fff;
}

.bk-svc-card-body {
  padding: 1.4rem 1.6rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.bk-svc-who {
  font-family: var(--bk-sans);
  font-size: 0.8rem;
  color: var(--bk-muted);
  line-height: 1.65;
}

.bk-svc-who strong {
  color: var(--bk-ink2);
  font-weight: 600;
}

.bk-svc-who-f {
  font-family: var(--bk-sans);
  font-size: 0.8rem;
  color: #a06000;
  line-height: 1.65;
}

.bk-svc-who-f strong {
  color: #7a4800;
  font-weight: 600;
}

.bk-svc-desc {
  font-family: var(--bk-sans);
  font-size: 0.87rem;
  color: var(--bk-ink2);
  line-height: 1.8;
}

.bk-svc-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
}

.bk-svc-items li {
  font-family: var(--bk-sans);
  font-size: 0.82rem;
  padding: 0.4rem 0;
  border-top: 1px solid var(--bk-border);
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  line-height: 1.6;
}

.bk-svc-items li:first-child {
  border-top: none;
  padding-top: 0;
}

.bk-svc-items li .bk-arr {
  color: var(--bk-orange);
  font-size: 0.7rem;
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.bk-svc-items li .bk-term {
  font-weight: 600;
  color: var(--bk-ink2);
}

.bk-svc-items li .bk-plain {
  color: var(--bk-muted);
}

.bk-svc-card-foot {
  padding: 1rem 1.6rem;
  border-top: 1px solid var(--bk-border);
  background: var(--bk-bg);
}

.bk-svc-card.bk-featured .bk-svc-card-foot {
  background: var(--bk-orange-pale);
  border-top-color: rgba(232, 134, 0, 0.2);
}

.bk-svc-note-foot {
  font-family: var(--bk-sans);
  font-size: 0.78rem;
  color: var(--bk-muted);
  line-height: 1.6;
}

.bk-svc-note-foot strong {
  color: var(--bk-ink2);
}

.bk-svc-card.bk-featured .bk-svc-note-foot {
  color: #a06000;
}

.bk-svc-card.bk-featured .bk-svc-note-foot strong {
  color: #7a4800;
}

.bk-svc-footer {
  margin-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1.4rem 1.8rem;
  background: var(--bk-bg);
  border: 1px solid var(--bk-border);
  border-radius: 8px;
}

.bk-svc-footer-text {
  font-family: var(--bk-sans);
  font-size: 0.88rem;
  color: var(--bk-ink2);
  line-height: 1.7;
}

.bk-svc-footer-text strong {
  color: var(--bk-ink);
}

.bk-svc-footer-link {
  font-family: var(--bk-sans);
  font-size: 0.82rem;
  color: var(--bk-orange);
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap 0.2s;
}

.bk-svc-footer-link:hover {
  gap: 0.6rem;
}

/* ── WORKS (工具與原型) ── */
.bk-works-section {
  background: var(--bk-white);
}

.bk-works-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
  margin-top: 2.5rem;
}

.bk-work-card {
  background: var(--bk-white);
  border: 1px solid var(--bk-border);
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s, transform 0.2s;
}

.bk-work-card:hover {
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.1);
  transform: translateY(-3px);
}

.bk-work-thumb {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  object-position: top;
  display: block;
  background: var(--bk-border);
}

.bk-work-thumb-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--bk-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.04em;
}

.bk-work-body {
  padding: 1.1rem 1.2rem 1.3rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.bk-work-tag {
  font-family: var(--bk-sans);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--bk-orange);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.bk-work-title {
  font-family: var(--bk-serif);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--bk-ink);
  line-height: 1.4;
  margin-bottom: 0.5rem;
}

.bk-work-desc {
  font-family: var(--bk-sans);
  font-size: 0.8rem;
  color: var(--bk-muted);
  line-height: 1.7;
  flex: 1;
}

.bk-work-link {
  font-family: var(--bk-sans);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.9rem;
  font-size: 0.78rem;
  color: var(--bk-orange);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 134, 0, 0.3);
  padding-bottom: 1px;
  transition: gap 0.2s, border-color 0.2s;
  align-self: flex-start;
}

.bk-work-link:hover {
  gap: 0.55rem;
  border-color: var(--bk-orange);
}

/* ── TESTIMONIALS (客戶評價) ── */
.bk-testi-section {
  background: var(--bk-bg);
}

.bk-testi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  margin-top: 2.5rem;
}

.bk-testi {
  background: var(--bk-white);
  border: 1px solid var(--bk-border);
  border-left: 3px solid var(--bk-orange);
  border-radius: 8px;
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.bk-testi-text {
  font-family: var(--bk-sans);
  font-size: 0.88rem;
  color: var(--bk-ink2);
  line-height: 1.9;
  flex: 1;
}

.bk-testi-from {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  border-top: 1px solid var(--bk-border);
  padding-top: 0.9rem;
}

.bk-testi-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--bk-orange);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--bk-serif);
  font-size: 0.88rem;
  font-weight: 700;
  flex-shrink: 0;
}

.bk-testi-name {
  font-family: var(--bk-sans);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--bk-ink);
}

.bk-testi-role {
  font-family: var(--bk-sans);
  font-size: 0.72rem;
  color: var(--bk-muted);
}

/* ── ARTICLES (觀點文章) ── */
.bk-articles-section {
  background: var(--bk-bg);
}

.bk-articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  margin-top: 2.5rem;
}

.bk-article-card {
  background: var(--bk-white);
  border: 1px solid var(--bk-border);
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
  text-decoration: none;
  display: block;
}

.bk-article-card:hover {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  transform: translateY(-3px);
}

.bk-article-cat {
  padding: 1.1rem 1.3rem 0;
  font-family: var(--bk-sans);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--bk-orange);
  text-transform: uppercase;
}

.bk-article-title {
  font-family: var(--bk-serif);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--bk-ink);
  line-height: 1.5;
  padding: 0.5rem 1.3rem 0.9rem;
}

.bk-article-date {
  padding: 0 1.3rem 1.1rem;
  font-family: var(--bk-sans);
  font-size: 0.72rem;
  color: var(--bk-muted);
}

.bk-articles-more {
  font-family: var(--bk-sans);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 2rem;
  font-size: 0.88rem;
  color: var(--bk-orange);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1.5px solid var(--bk-orange);
  padding-bottom: 2px;
  transition: gap 0.2s;
}

.bk-articles-more:hover {
  gap: 0.7rem;
}

/* ── FAQ ── */
.bk-faq-section {
  background: var(--bk-bg);
}

.bk-faq-list {
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.bk-faq-item {
  border-bottom: 1px solid var(--bk-border);
}

.bk-faq-item:first-child {
  border-top: 1px solid var(--bk-border);
}

.bk-faq-q {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.3rem 0;
  cursor: pointer;
  user-select: none;
}

.bk-faq-q-text {
  font-family: var(--bk-sans);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--bk-ink);
  line-height: 1.5;
  flex: 1;
}

.bk-faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bk-orange-pale);
  border: 1.5px solid rgba(232, 134, 0, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
  transition: background 0.2s, transform 0.3s;
}

.bk-faq-icon svg {
  width: 12px;
  height: 12px;
  stroke: var(--bk-orange);
  stroke-width: 2.5;
  transition: transform 0.3s;
}

.bk-faq-item.bk-open .bk-faq-icon {
  background: var(--bk-orange);
}

.bk-faq-item.bk-open .bk-faq-icon svg {
  stroke: #fff;
  transform: rotate(45deg);
}

.bk-faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.38s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s;
}

.bk-faq-a-inner {
  font-family: var(--bk-sans);
  padding: 0 0 1.4rem;
  font-size: 0.88rem;
  color: var(--bk-ink2);
  line-height: 2;
  max-width: 780px;
}

.bk-faq-item.bk-open .bk-faq-a {
  max-height: 500px;
}

/* ── CONTACT (聯絡 CTA) ── */
.bk-cta-section {
  background: var(--bk-ink);
  padding: 4.5rem 2rem;
  text-align: center;
}

.bk-cta-section .bk-eyebrow {
  justify-content: center;
  color: rgba(255, 255, 255, 0.35);
}

.bk-cta-section .bk-eyebrow::before {
  background: rgba(255, 255, 255, 0.2);
}

.bk-cta-section h2 {
  font-family: var(--bk-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.8rem;
}

.bk-cta-section p {
  font-family: var(--bk-sans);
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 2.2rem;
  line-height: 1.95;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.bk-cta-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.bk-btn-orange-cta {
  font-family: var(--bk-sans);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bk-orange);
  color: #fff !important;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 13px 26px;
  border-radius: 4px;
  text-decoration: none;
  transition: opacity 0.2s;
  letter-spacing: 0.04em;
}

.bk-btn-orange-cta:hover {
  opacity: 0.88;
  color: #fff !important;
}

.bk-btn-line {
  font-family: var(--bk-sans);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #06C755;
  color: #fff !important;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 13px 26px;
  border-radius: 4px;
  text-decoration: none;
  transition: opacity 0.2s;
  letter-spacing: 0.04em;
}

.bk-btn-line:hover {
  opacity: 0.88;
  color: #fff !important;
}

/* ── 動畫設定 ── */
.bk-sr {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s, transform 0.6s;
}

.bk-sr.bk-in {
  opacity: 1;
  transform: translateY(0);
}

/* ── 響應式佈局 RWD ── */
@media(max-width:900px) {
  .bk-stats-inner {
    grid-template-columns: repeat(2, 1fr);
  }

  .bk-stat-item:nth-child(2) {
    border-right: none;
  }

  .bk-stat-item:nth-child(3) {
    border-top: 1px solid var(--bk-border);
  }

  .bk-stat-item:nth-child(4) {
    border-top: 1px solid var(--bk-border);
    border-right: none;
  }

  .bk-value-grid {
    grid-template-columns: 1fr 1fr;
  }

  .bk-about-hi-block {
    grid-template-columns: 180px 1fr;
    gap: 2rem;
  }

  .bk-about-photo-wrap {
    width: 180px;
  }

  .bk-about-photo {
    width: 180px;
    height: 225px;
  }

  .bk-about-bottom {
    grid-template-columns: 1fr;
  }

  .bk-case-item {
    grid-template-columns: 1fr;
  }

  .bk-case-photo {
    min-height: 160px;
  }

  .bk-testi-grid {
    grid-template-columns: 1fr;
  }

  .bk-articles-grid {
    grid-template-columns: 1fr;
  }

  .bk-works-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .bk-svc-grid {
    grid-template-columns: 1fr;
  }

  .bk-svc-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media(max-width:600px) {
  .bk-value-grid {
    grid-template-columns: 1fr;
  }

  .bk-about-hi-block {
    grid-template-columns: 1fr;
  }

  .bk-about-photo-wrap {
    width: 160px;
    margin: 0 auto 2rem;
  }

  .bk-hero-content {
    padding: 3rem 1.5rem 4rem;
  }

  .bk-cred-grid-2col {
    grid-template-columns: 1fr !important;
  }

  .bk-works-grid {
    grid-template-columns: 1fr;
  }
}

/* ══════════════════════════════════════
   PART 3: 全站共用 Footer
   ══════════════════════════════════════ */
.bk-site-footer {
  background-color: #111111;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 2.5rem 0;
  font-family: var(--bk-sans);
  width: 100%;
}

.bk-site-footer .footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.bk-site-footer .footer-logo,
.bk-site-footer .footer-links a,
.bk-site-footer .footer-copy {
  color: var(--bk-muted);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color 0.3s ease;
  letter-spacing: 0.05em;
}

.bk-site-footer .footer-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.bk-site-footer .footer-logo:hover,
.bk-site-footer .footer-links a:hover {
  color: var(--bk-orange);
}

/* 手機版排版調整：改為垂直置中排列 */
@media (max-width: 768px) {
  .bk-site-footer .footer-inner {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
  }
  
  .bk-site-footer .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem 1.5rem;
  }
}

/* ══════════════════════════════════════
   PART 4: 側邊欄 (Sidebar Widgets)
   ══════════════════════════════════════ */
.bk-sidebar {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

/* 1. 權威簡介 (Author Bio) */
.bk-widget-bio {
  background: var(--bk-white);
  border: 1px solid var(--bk-border);
  border-radius: 8px;
  padding: 24px;
  text-align: center;
  margin-bottom: 30px;
}
.bk-widget-bio img {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 15px;
  border: 2px solid var(--bk-orange-pale);
}
.bk-widget-bio h3 {
  font-family: var(--bk-serif);
  font-size: 1.2rem;
  margin: 0 0 5px;
  color: var(--bk-ink);
}
.bk-widget-bio .title {
  font-size: 0.8rem;
  color: var(--bk-orange);
  font-weight: 700;
  margin-bottom: 12px;
}
.bk-widget-bio .quote {
  font-family: var(--bk-serif);
  font-size: 0.95rem;
  color: var(--bk-ink2);
  font-style: italic;
  margin-bottom: 12px;
  line-height: 1.6;
}
.bk-widget-bio .desc {
  font-size: 0.85rem;
  color: var(--bk-muted);
  line-height: 1.6;
}

/* 2. 核心行動呼籲 (Primary CTA) */
.bk-widget-cta {
  background: var(--bk-orange-pale);
  border: 1px solid rgba(232, 134, 0, 0.2);
  border-radius: 8px;
  padding: 24px;
  text-align: center;
  margin-bottom: 30px;
}
.bk-widget-cta h4 {
  font-family: var(--bk-serif);
  font-size: 1.1rem;
  color: var(--bk-ink);
  margin: 0 0 10px;
}
.bk-widget-cta p {
  font-size: 0.85rem;
  color: var(--bk-ink2);
  margin: 0 0 20px;
  line-height: 1.6;
}
.bk-widget-cta .bk-btn {
  display: block;
  background: var(--bk-orange);
  color: #fff !important;
  text-decoration: none;
  padding: 12px 20px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.9rem;
  transition: background 0.2s;
}
.bk-widget-cta .bk-btn:hover {
  background: var(--bk-orange-light);
}

/* 5. 實戰工具推薦 (Tools Promo) */
.bk-widget-tools {
  background: var(--bk-ink);
  border-radius: 8px;
  padding: 24px;
  color: #fff;
  text-align: center;
  margin-bottom: 30px;
}
.bk-widget-tools h4 {
  font-family: var(--bk-serif);
  font-size: 1.1rem;
  margin: 0 0 10px;
  color: #fff;
}
.bk-widget-tools p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
  margin: 0 0 20px;
}
.bk-widget-tools a {
  display: inline-block;
  color: var(--bk-orange) !important;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 700;
  border: 1px solid var(--bk-orange);
  padding: 8px 16px;
  border-radius: 4px;
  transition: all 0.2s;
}
.bk-widget-tools a:hover {
  background: var(--bk-orange);
  color: #fff !important;
}