/* ==========================================================================
   八二公寓 82 APARTMENT - Core Luxury Design System
   Font Stacks: Manrope (EN) + Noto Sans TC (ZH)
   Aesthetic: Substance Lab Modern Studio Vibe (Floating Capsule, Blur-Fade, Watermarks)
   ========================================================================== */

:root {
  /* ========================================================================
     1. 核心底色與主題表面 (Backgrounds & Surfaces)
     ======================================================================== */
  --bg-primary: #191919;
  --bg-card-dark: #222222;
  --bg-card-light: #f9f9fb;
  --bg-white: #ffffff;
  --bg-deep-dark: #111111;
  --bg-stroke-dark: #242424;

  /* 淺色主題微質地背景與表面 */
  --surface-warm-white: #fdfdfb;
  --surface-ivory: #fdfdfa;
  --surface-cream: #f7f7f2;
  --surface-warm-light: #fbfbfa;
  --surface-form-input: #f7f7f4;
  --surface-gray-light: #f0f0eb;
  --surface-border-subtle: #e0e0dc;
  --surface-border-card: #e5e5dc;
  --surface-divider: #e8e8e2;

  /* 視差卡片氛圍深色背景 */
  --bg-pain-dark: #180a08;
  --bg-pain-deep: #0d0605;
  --bg-pain-ambient: #220b08;
  --bg-pain-ambient-deep: #0d0504;
  --bg-bao-dark: #1e1810;
  --bg-bao-deep: #0d0a07;
  --bg-dai-dark: #0a1c12;
  --bg-dai-deep: #040c07;
  --bg-dai-surface: #0d0f0e;
  --bg-dai-card: #151816;

  /* ========================================================================
     2. 品牌識別與強調色 (Brand Accents)
     ======================================================================== */
  /* 奢華金 (Gold) */
  --accent-gold: #c6a77a;
  --accent-gold-light: #e6d3b3;
  --accent-gold-dark: #a38253;
  --accent-gold-gradient-start: #cda772;
  --accent-gold-gradient-end: #9e7b47;
  --accent-gold-bright-start: #d4a017;
  --accent-gold-bright-end: #c97a00;

  /* 森林綠與自然綠 (Green) */
  --accent-green: #2a3a2e;
  --accent-green-light: #3d5242;
  --accent-green-deep: #1b4332;
  --accent-green-forest: #1e3324;
  --accent-green-leaf: #2e7d32;
  --accent-green-success: #4fa16c;
  --accent-green-gradient-start: #388e53;
  --accent-green-gradient-end: #206737;

  /* 官方 LINE 綠色系 (LINE Brand) */
  --color-line: #06c755;
  --color-line-hover: #05b34c;
  --color-line-dark: #039e41;

  /* 警示 / 痛點珊瑚橘 (Coral / Warning) */
  --accent-coral: #e76f51;
  --accent-coral-gradient-start: #e65c40;
  --accent-coral-gradient-end: #c43820;

  /* ========================================================================
     3. 排版與文字色彩 (Typography & Neutrals)
     ======================================================================== */
  --text-pure-white: #ffffff;
  --text-main: #2b2b2b;
  --text-heading-dark: #1a1a1a;
  --text-sub: #444444;
  --text-body: #555555;
  --text-dimmed: #666666;
  --text-muted: #737373;
  --text-label-gray: #777777;
  --text-placeholder: #888888;
  --text-dim: #999999;
  --text-light: #f3f3f5;
  --text-warm-gray: #8c897f;

  /* ========================================================================
     4. 邊框與陰影 (Borders & Shadows)
     ======================================================================== */
  --border-light: rgba(0, 0, 0, 0.08);
  --border-dark: rgba(255, 255, 255, 0.1);
  --border-white-faint: rgba(255, 255, 255, 0.06);

  /* ========================================================================
     5. 字體與動態 (Typography & Motion)
     ======================================================================== */
  --font-en: "Manrope", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-zh: "Noto Sans TC", sans-serif;

  --transition-fast: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.85s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 全局重置與基礎樣式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  overflow-x: hidden;
  overflow-x: clip;
}

body {
  font-family: var(--font-zh);
  background-color: var(--bg-primary);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
  overflow-x: clip;
  width: 100%;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* 版面容器 (Container) */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

.inline-block{
  display: inline-block;
}

.case_subtitle {
  display: inline-block;
  font-size: 75%;
}

/* ==========================================================================
   1. Header 與導覽列樣式
   ========================================================================== */

/* 巨型背景文字浮印 */
.bg_watermark_text {
  position: absolute;
  font-family: var(--font-en);
  font-size: clamp(5.5rem, 14vw, 15rem);
  font-weight: 900;
  line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--bg-stroke-dark);
  letter-spacing: -0.04em;
  pointer-events: none;
  user-select: none;
  z-index: 0;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  white-space: nowrap;
  max-width: 100vw;
  will-change: transform;
  transition: transform 0.16s cubic-bezier(0.16, 1, 0.3, 1);
}

.dark_theme .bg_watermark_text {
  -webkit-text-stroke: 1.5px var(--bg-stroke-dark);
}

.white_theme .bg_watermark_text {
  -webkit-text-stroke: 1.5px var(--surface-divider);
}

/* ==========================================================================
   1. Floating Pill Navigation Header (#navdesktop)
   ========================================================================== */
#navdesktop {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 40px);
  max-width: 1060px;
  height: 62px;
  padding: 0 8px 0 20px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 999px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.04);
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 1000;
  opacity: 0;
  transform: translate(-50%, -20px);
  pointer-events: none;
  transition: opacity 0.4s ease, transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), background var(--transition-normal);
}

#navdesktop.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.16);
  border-color: rgba(255, 255, 255, 0.9);
}

.nav_logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  text-decoration: none;
}

.nav_logo img,
.nav_logo_img {
  height: 40px;
  width: auto;
  object-fit: contain;
  border-radius: 0;
  display: block;
}

.nav_logo_text {
  display: flex;
  flex-direction: column;
  margin:0 5px;
}

.nav_logo_text .zh {
  font-family: var(--font-zh);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.1;
  letter-spacing: 0.05em;
}

.nav_logo_text .en {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-green);
  letter-spacing: 0.12em;
  line-height: 1;
}

#navdesktop ul {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

#navdesktop ul li a.nav_item_link {
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color var(--transition-fast);
}

.nav_num {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 800;
  color: var(--accent-gold);
  line-height: 1;
  transition: color var(--transition-fast);
}

.nav_text_stack {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.15;
}

.nav_text_stack .nav_zh {
  font-family: var(--font-zh);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.04em;
  transition: color var(--transition-fast);
}

.nav_text_stack .nav_en {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-placeholder);
  letter-spacing: 0.1em;
  transition: color var(--transition-fast);
}

#navdesktop ul li a:hover .nav_zh,
#navdesktop ul li a:hover .nav_en,
#navdesktop ul li a:hover .nav_num {
  color: var(--accent-green);
}

.nav_cta_btn,
.nav_cta_btn:hover,
.nav_cta_btn:focus,
.nav_cta_btn:active {
  background: var(--accent-green) !important;
  color: var(--text-pure-white) !important;
  padding: 10px 22px !important;
  border-radius: 999px !important;
  font-family: var(--font-en) !important;
  font-size: 0.875rem !important;
  font-weight: 700 !important;
  letter-spacing: 0.1em !important;
  transition: all var(--transition-fast) !important;
  box-shadow: 0 4px 14px rgba(42, 58, 46, 0.25) !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 6px !important;
  text-decoration: none !important;
  border-bottom: none !important;
}

.nav_cta_btn:hover {
  background: var(--accent-green-light) !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(42, 58, 46, 0.35) !important;
  text-decoration: none !important;
}

.mobile_cta_li {
  display: none;
}

.mobile_toggle_btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.3rem;
  color: var(--text-main);
  cursor: pointer;
}

/* ==========================================================================
   2. Hero 主視覺與背景浮印字型樣式
   ========================================================================== */
#hero {
  position: relative;
  width: 100%;
  height: 350vh;
}

.hero_sticky_wrapper {
  position: sticky;
  top: 0;
  width: 100%;
  height: 100vh;
  min-height: 720px;
  max-height: 900px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero_slideshow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.slide_img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1);
  transition: opacity 1.8s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

@keyframes kenBurnsZoom {
  0% {
    transform: scale(1.12);
  }
  100% {
    transform: scale(1);
  }
}

.slide_img.active {
  opacity: 1;
  animation: kenBurnsZoom 7.5s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

.hero_dimmy {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(25, 25, 25, 0.5) 0%,
    rgba(25, 25, 25, 0.75) 60%,
    rgba(25, 25, 25, 0.95) 100%
  );
  z-index: 2;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.hero_seq_item {
  opacity: 0;
  filter: blur(14px);
  transform: translateY(30px);
  pointer-events: none;
  transition: filter 0.75s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: filter, opacity, transform;
}

/* Hero 開場白色 Logo 疊加遮罩層 */
.hero_intro_overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  transition: opacity 0.5s ease-out, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero_intro_white_logo {
  width: clamp(260px, 45vw, 520px);
  height: auto;
  display: block;
  filter: drop-shadow(0 12px 36px rgba(0, 0, 0, 0.5));
}

.hero_intro_tagline {
  font-family: var(--font-zh);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.12em;
  margin-top: 20px;
  text-align: center;
  white-space: nowrap;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
  font-weight: 400;
}

.hero_intro_tagline .slash {
  color: var(--accent-gold);
  font-weight: 700;
  margin: 0 6px;
}

@media (max-width: 768px) {
  .hero_intro_tagline {
    font-size: 1rem;
    letter-spacing: 0.05em;
    margin-top: 14px;
    white-space: normal;
  }
  .hero_intro_tagline .slash {
    margin: 0 3px;
  }
}

.hero_content {
  position: relative;
  z-index: 3;
  max-width: 860px;
  padding: 0 24px;
  margin-top: 40px;
  transition: opacity 0.5s ease, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero_subtitle_en {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.28em;
  color: var(--accent-gold-light);
  display: inline-block;
}

.hero_main_title {
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  font-weight: 900;
  line-height: 1.25;
  color: var(--text-pure-white);
  margin-bottom: 24px;
  letter-spacing: -0.01em;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.hero_desc {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: rgba(255, 255, 255, 0.88);
  font-weight: 400;
  max-width: 680px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

/* 微斜線標籤列樣式 */
.pure_slash_tag {
  font-family: var(--font-zh);
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.75);
  letter-spacing: 0.08em;
  margin-bottom: 28px;
}

.pure_slash_tag .slash {
  color: var(--accent-gold);
  font-weight: 700;
  margin: 0 6px;
}

/* 行動裝置 / 平板   RWD 響應式樣式 */
@media (max-width: 768px) {
  .pure_slash_tag .slash {
    margin: 0;
  }
}

.hero_actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

/* 主行動按鈕與微箭頭 Hover 動效 */
.btn_pure_primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 36px;
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-dark) 100%);
  color: var(--text-pure-white);
  font-family: var(--font-zh);
  font-size: 1rem;
  font-weight: 700;
  border-radius: 999px;
  text-decoration: none;
  transition: all var(--transition-fast);
  box-shadow: 0 8px 24px rgba(198, 167, 122, 0.35);
  border: none;
  cursor: pointer;
}

.btn_pure_primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(198, 167, 122, 0.5);
  background: linear-gradient(135deg, var(--accent-gold-light) 0%, var(--accent-gold) 100%);
}

.btn_pure_outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 36px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-pure-white);
  font-family: var(--font-zh);
  font-size: 1rem;
  font-weight: 600;
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
  transition: all var(--transition-fast);
}

.btn_pure_outline:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-2px);
}

.btn_arrow {
  margin-left: 8px;
  font-size: 1rem;
  width: 1em;
  height: 1em;
  vertical-align: middle;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn_pure_primary:hover .btn_arrow,
.btn_pure_outline:hover .btn_arrow,
.nav_cta_btn:hover .btn_arrow {
  transform: translate(3px, -3px);
}

.scroll_indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.5);
  font-family: var(--font-en);
  font-size: 0.75rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translate(-50%, 0); }
  40% { transform: translate(-50%, -8px); }
  60% { transform: translate(-50%, -4px); }
}

/* ==========================================================================
   3. Section 01: 關於八二 (400vh 視差過渡區塊)
   ========================================================================== */
.section_pure {
  position: relative;
  padding: 120px 0;
  background-color: var(--bg-primary);
  overflow: hidden;
}

#about.section_pure {
  overflow: visible !important;
}

.section_pure.white_theme {
  background-color: var(--bg-white);
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(198, 167, 122, 0.08) 0%, transparent 65%),
    linear-gradient(rgba(0, 0, 0, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.018) 1px, transparent 1px);
  background-size: 100% 100%, 64px 64px, 64px 64px;
  color: var(--text-main);
}

.section_pure.dark_theme {
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(198, 167, 122, 0.09) 0%, transparent 70%),
    linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: 100% 100%, 80px 80px, 80px 80px;
  color: var(--text-light);
}

.pure_section_title_block {
  margin-bottom: 64px;
}

.pure_giant_num {
  font-family: var(--font-en);
  font-size: 4.6rem;
  font-weight: 100;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  opacity: 0.95;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.pure_en_sub {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.28em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 8px;
  display: block;
}

.pure_zh_main {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.white_theme .pure_zh_main {
  color: var(--text-main);
}

.dark_theme .pure_zh_main {
  color: var(--text-pure-white);
}

.pure_title_desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 820px;
  margin-bottom: 12px;
}

/* ==========================================================================
   3. Section 01: 關於八二 (400vh 視差過渡區塊)
   ========================================================================== */
.about_content_stage {
  position: relative;
  width: 100%;
  margin-top: 0px;
}

.about_mode_a_box {
  width: 100%;
  margin-bottom: 72px;
}

.about_mode_b_box {
  width: 100%;
  position: relative;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 48px;
  align-items: start;
}

/* 電腦版左側目錄索引 (Topic Index) */
.about_b_sidebar_toc {
  position: -webkit-sticky;
  position: sticky;
  top: 100px;
  align-self: start;
  z-index: 10;
}

.toc_sticky_inner {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 24px 18px 24px 14px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
}

.toc_nav_list {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-left: 20px;
}

/* 垂直導軌連線與動態光流進度條 */
.toc_rail_line {
  position: absolute;
  left: 6px;
  top: 24px;
  bottom: 24px;
  width: 2px;
  background: rgba(198, 167, 122, 0.22);
  border-radius: 2px;
  z-index: 1;
  pointer-events: none;
}

.toc_rail_progress {
  position: absolute;
  left: 6px;
  top: 30px;
  width: 2px;
  height: 0px;
  max-height: calc(100% - 48px);
  background: linear-gradient(180deg, var(--accent-gold) 0%, var(--accent-gold-dark) 100%);
  border-radius: 2px;
  z-index: 1;
  box-shadow: 0 0 10px rgba(198, 167, 122, 0.8);
  transition: height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.toc_nav_item {
  width: 100%;
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 12px 12px 12px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  text-align: left;
  transition: all 0.25s ease;
}

/* 節點圓點 (Node Dot) */
.toc_node_dot {
  position: absolute;
  left: -19px;
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bg-white);
  border: 2px solid rgba(198, 167, 122, 0.5);
  box-sizing: border-box;
  z-index: 2;
  transition: all 0.3s ease;
}

.toc_nav_item:hover {
  background: var(--surface-ivory);
  border-color: rgba(198, 167, 122, 0.3);
}

.toc_nav_item:hover .toc_node_dot {
  border-color: var(--accent-gold-dark);
  background: var(--surface-cream);
  transform: translateY(-50%) scale(1.15);
}

.toc_nav_item.active {
  background: var(--surface-cream);
  border-color: transparent;
}

.toc_nav_item.active .toc_node_dot {
  width: 12px;
  height: 12px;
  left: -20px;
  background: var(--accent-gold-dark);
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px rgba(198, 167, 122, 0.35);
  animation: tocDotPulse 2.2s infinite;
}

@keyframes tocDotPulse {
  0% { box-shadow: 0 0 0 2px rgba(198, 167, 122, 0.6); }
  50% { box-shadow: 0 0 0 8px rgba(198, 167, 122, 0); }
  100% { box-shadow: 0 0 0 2px rgba(198, 167, 122, 0.6); }
}

.toc_item_num {
  font-family: var(--font-en);
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--accent-gold-dark);
  letter-spacing: 0.05em;
}

.toc_item_text {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

.toc_item_title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.toc_item_sub {
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-top: 2px;
}

.toc_item_arrow {
  width: 16px;
  height: 16px;
  color: var(--accent-gold);
  opacity: 0;
  transform: translateX(-4px);
  transition: all 0.25s ease;
  flex-shrink: 0;
}

.toc_nav_item.active .toc_item_arrow,
.toc_nav_item:hover .toc_item_arrow {
  opacity: 1;
  transform: translateX(0);
}

/* Section 01 右側開放式排版內容流容器 */
.about_b_main_flow {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 40px;
  min-width: 0;
}

.about_cards_container {
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.about_track_card {
  position: relative;
  width: 100%;
  height: auto;
  background: var(--bg-white);
  border-radius: 24px;
  padding: 38px 40px;
  border: 1px solid var(--border-light);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  justify-content: start;
  scroll-margin-top: 100px;
  transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.about_track_card:hover {
  border-color: var(--accent-gold);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.about_track_card .panel_tag {
  font-family: var(--font-en);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--accent-gold);
  display: inline-block;
  margin-bottom: 8px;
}

.about_track_card h3,
.b_section_heading {
  font-size: clamp(1.4rem, 2.2vw, 1.85rem);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 10px;
  line-height: 1.35;
}

.about_track_card p {
  font-size: 1.05rem;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 12px;
}

.about_track_card .card_lead_desc {
  font-size: 1.05rem;
  color: var(--text-body);
  line-height: 1.6;
  margin: -2px 0 16px 0;
}

.about_pure_grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.about_big_quote {
  font-size: clamp(1.4rem, 2.5vw, 2.05rem);
  font-weight: 700;
  line-height: 1.55;
  color: var(--text-main);
  padding-left: 28px;
  border-left: 5px solid var(--accent-gold);
}

.about_feature_cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.pure_mini_card {
  background: var(--bg-card-light);
  padding: 32px 28px;
  border-radius: 16px;
  border: 1px solid var(--border-light);
  transition: all var(--transition-fast);
}

.pure_mini_card.interactive_card {
  cursor: pointer;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.pure_mini_card.interactive_card .card_header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.pure_mini_card.interactive_card .card_arrow {
  color: var(--accent-gold);
  font-size: 1rem;
  width: 1em;
  height: 1em;
  transition: transform 0.3s ease, color 0.3s ease;
}

.pure_mini_card.interactive_card:hover {
  transform: translateY(-6px);
  background: var(--bg-white);
  border-color: var(--accent-gold);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.08);
}

.pure_mini_card.interactive_card:hover .card_arrow {
  transform: translateY(3px);
  color: var(--accent-green);
}

.pure_mini_card.interactive_card .card_hint {
  font-size: 1rem;
  color: var(--accent-gold);
  font-weight: 700;
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color 0.3s ease;
}

.pure_mini_card.interactive_card:hover .card_hint {
  color: var(--accent-green);
}

/* Section 01 四項能力自然向下排列容器 */
.about_cards_container {
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.about_track_card {
  position: relative;
  width: 100%;
  height: auto;
  background: var(--bg-white);
  border-radius: 24px;
  padding: 36px 40px;
  border: 1px solid var(--border-light);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.06);
  display: flex;
  flex-direction: column;
  justify-content: start;
  transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.about_track_card:hover {
  border-color: var(--accent-gold);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.09);
  transform: translateY(-3px);
}

.about_track_card .panel_tag {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--accent-gold);
  display: inline-block;
  margin-bottom: 6px;
}

.about_track_card h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.3;
}

.about_track_card p {
  font-size: 1rem;
  color: var(--text-sub);
  line-height: 1.5;
  margin-bottom: 10px;
}

.about_track_card .card_lead_desc {
  font-size: 1rem;
  color: var(--text-body);
  line-height: 1.5;
  margin: -2px 0 10px 0;
}

.about_metrics_list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.metric_badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface-cream);
  border: 1px solid rgba(42, 58, 46, 0.12);
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-heading-dark);
  transition: all 0.25s ease;
  line-height: 1.5;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

/* 核心數據統計亮點網格 */
.stat_highlight_grid {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.stat_highlight_grid.col3 {
  grid-template-columns: repeat(3, 1fr);
}

.stat_highlight_grid.col2 {
  grid-template-columns: repeat(2, 1fr);
}

.stat_tile {
  background: var(--surface-ivory);
  border: 1px solid rgba(198, 167, 122, 0.25);
  border-radius: 14px;
  padding: 10px 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
}

.stat_tile:hover {
  transform: translateY(-2px);
  border-color: var(--accent-gold-dark);
  box-shadow: 0 8px 20px rgba(163, 130, 83, 0.12);
  background: var(--bg-white);
}

.stat_icon {
  width: 32px;
  height: 32px;
  background: transparent;
  color: var(--accent-gold-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 4px;
}

.stat_icon svg,
.stat_icon i[data-lucide] {
  width: 30px;
  height: 30px;
  stroke: var(--accent-gold-dark);
  stroke-width: 1.25px;
}

.stat_val {
  font-family: var(--font-en);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.15;
  margin-bottom: 2px;
  letter-spacing: -0.01em;
}

.stat_lbl {
  font-size: 1rem;
  font-weight: normal;
  color: var(--text-muted);
}

/* 特色規格橫幅標籤（通用輔助）*/
.card_feature_banner {
  background: var(--surface-warm-white);
  border: 1px solid rgba(198, 167, 122, 0.28);
  border-radius: 14px;
  padding: 10px 14px;
  margin: 8px 0 10px 0;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.02);
}

.banner_tag {
  font-size: 1rem;
  font-weight: 800;
  color: var(--accent-gold-dark);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.banner_tag svg,
.banner_tag i[data-lucide] {
  width: 15px;
  height: 15px;
  stroke: var(--accent-gold-dark);
  stroke-width: 2.2px;
}

.banner_specs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.spec_chip {
  background: var(--bg-white);
  border: 1px solid rgba(42, 58, 46, 0.12);
  border-radius: 8px;
  padding: 4px 9px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}

.spec_chip svg,
.spec_chip i[data-lucide] {
  width: 13px;
  height: 13px;
  stroke: var(--accent-gold-dark);
  stroke-width: 2.5px;
}

.spec_chip i {
  color: var(--accent-gold-dark);
  font-size: 1rem;
}

.step_flow_arrow svg,
.step_flow_arrow i[data-lucide] {
  width: 14px;
  height: 14px;
  stroke: var(--accent-gold);
  stroke-width: 2.2px;
}

/* 雙欄租客畫像矩陣 (Card 2 寵物友善空間) */
.persona_card_grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 10px;
}

.persona_item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.persona_avatar {
  width: 32px;
  height: 32px;
  background: transparent;
  color: var(--accent-gold-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.persona_avatar svg,
.persona_avatar i[data-lucide] {
  width: 26px;
  height: 26px;
  stroke: var(--accent-gold-dark);
  stroke-width: 1.25px;
}

.persona_info {
  display: flex;
  flex-direction: column;
}

.persona_title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}

.persona_sub {
  font-size: 1rem;
  color: var(--text-muted);
  margin-top: 1px;
}

/* 痛點 vs 解方對照矩陣 (Card 3 穩定收益保障) */
.guarantee_compare_box {
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.compare_header {
  display: grid;
  grid-template-columns: 1fr 24px 1fr;
  align-items: center;
  gap: 12px;
}

.compare_badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.compare_badge.badge_bad {
  background: rgba(120, 120, 120, 0.08);
  border: 1px solid rgba(0, 0, 0, 0.07);
  color: var(--text-dimmed);
}

.compare_badge.badge_bad svg,
.compare_badge.badge_bad i[data-lucide] {
  width: 14px;
  height: 14px;
  stroke: var(--text-placeholder);
  stroke-width: 2.2px;
}

.compare_badge.badge_good {
  background: rgba(46, 125, 50, 0.09);
  border: 1px solid rgba(46, 125, 50, 0.22);
  color: var(--accent-green-deep);
}

.compare_badge.badge_good svg,
.compare_badge.badge_good i[data-lucide] {
  width: 14px;
  height: 14px;
  stroke: var(--accent-green-leaf);
  stroke-width: 2.4px;
}

.compare_header_arrow {
  text-align: center;
  color: var(--accent-gold);
  font-size: 1rem;
  font-weight: 800;
}

.compare_rows_group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.compare_row {
  display: grid;
  grid-template-columns: 1fr 24px 1fr;
  align-items: center;
  gap: 12px;
  padding: 7px 12px;
  border-radius: 8px;
  background: var(--bg-white);
  border: 1px solid rgba(42, 58, 46, 0.06);
  font-size: 1rem;
}

.compare_left {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dimmed);
  font-weight: 600;
  text-align: center;
}

.compare_arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold);
  font-weight: 800;
  font-size: 1rem;
}

.compare_right {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--accent-green-forest);
  font-weight: 800;
  text-align: center;
}

/* Bento 現代微格網 6:4 分割 (Card 4 廣大服務覆蓋) */
.bento_card_inner {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 12px;
  align-items: stretch;
  margin-top: 10px;
}

.bento_visual_cell {
  background: var(--surface-warm-light);
  border: 1px solid rgba(198, 167, 122, 0.25);
  border-radius: 14px;
  height: 240px;
  padding: 6px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease;
  
}

.bento_visual_cell:hover {
  transform: translateY(-2px);
  border-color: var(--accent-gold);
}

.bento_visual_cell img {
  width: 100%;
  min-height: 120px;
  object-fit: cover;
  object-position: center;
  border-radius: 10px;
  transition: transform 0.4s ease;
}

.bento_visual_cell .bento_map_overlay {
  position: absolute;
  inset: 6px;
  background: rgba(0, 0, 0, 0.45);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: var(--text-pure-white);
  font-size: 1rem;
  font-weight: 700;
  backdrop-filter: blur(1.5px);
  opacity: 0.9;
  transition: all 0.3s ease;
}

.bento_visual_cell:hover img,
.bento_visual_cell:hover .bento_map_overlay {
  transform: scale(1.1);
}

.bento_visual_cell .bento_map_overlay svg,
.bento_visual_cell .bento_map_overlay i[data-lucide] {
  width: 16px;
  height: 16px;
  stroke: var(--text-pure-white);
}

.bento_stats_column {
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: space-between;
}

.bento_stat_pill {
  background: var(--surface-ivory);
  border: 1px solid rgba(198, 167, 122, 0.3);
  border-radius: 12px;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.bento_stat_pill:hover {
  transform: translateX(2px);
  border-color: var(--accent-gold-dark);
  background: var(--bg-white);
}

.bento_stat_pill .stat_pill_icon {
  width: 32px;
  height: 32px;
  background: transparent;
  color: var(--accent-gold-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.bento_stat_pill .stat_pill_icon svg,
.bento_stat_pill .stat_pill_icon i[data-lucide] {
  width: 28px;
  height: 28px;
  stroke: var(--accent-gold-dark);
  stroke-width: 1.25px;
}

.bento_stat_pill .stat_text {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

.bento_stat_pill .stat_title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.25;
  white-space: nowrap;
}

.bento_stat_pill .stat_subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  margin-top: 2px;
  white-space: nowrap;
}

/* 三步驟智慧流程插圖列 */
.smart_steps_flow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 10px 0 10px;
}

.smart_step_item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex: 1;
}

.step_icon_wrapper {
  position: relative;
  width: 90px;
  height: 90px;
  border-radius: 18px;
  background: var(--bg-white);
  border: 1px solid rgba(0, 0, 0, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.04);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.smart_step_item:hover .step_icon_wrapper {
  transform: translateY(-3px);
  border-color: var(--accent-gold);
}

.step_illustration {
  max-width: 72px;
  max-height: 72px;
  object-fit: contain;
}

.step_num_badge {
  position: absolute;
  top: -10px;
  right: -10px;
  background: var(--accent-gold-dark);
  color: var(--text-pure-white);
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 800;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step_text_block {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.step_title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.25;
}

.step_flow_arrow {
  color: var(--accent-gold);
  font-size: 1rem;
  opacity: 0.65;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: flowArrowPulse 2.2s ease-in-out infinite;
}

@keyframes flowArrowPulse {
  0%, 100% {
    transform: translateX(0);
    opacity: 0.5;
  }
  50% {
    transform: translateX(5px);
    opacity: 1;
    filter: drop-shadow(0 0 6px rgba(198, 167, 122, 0.85));
  }
}

/* 地圖圖像預覽互動外框 */
.map_preview_box {
  position: relative;
  width: 100%;
  height: 100px;
  border-radius: 12px;
  overflow: hidden;
  margin: 8px 0 12px 0;
  cursor: pointer;
  border: 1px solid rgba(42, 58, 46, 0.15);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.map_preview_box:hover {
  transform: translateY(-2px);
  border-color: var(--accent-gold);
}

.map_preview_img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.5s ease;
}

.map_preview_box:hover .map_preview_img {
  transform: scale(1.06);
}

.map_preview_overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-pure-white);
  font-size: 1rem;
  font-weight: 700;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.map_preview_box .map_preview_overlay {
  opacity: 1;
}

/* 高對比全螢幕大圖 Lightbox 燈箱 Modal */
.image_lightbox_modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.image_lightbox_modal.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox_content_box {
  position: relative;
  max-width: 92vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: scale(0.92);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.image_lightbox_modal.active .lightbox_content_box {
  transform: scale(1);
}

.lightbox_img {
  background: var(--bg-white);
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.lightbox_close_btn {
  position: absolute;
  top: -18px;
  right: -18px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-white);
  color: var(--bg-deep-dark);
  border: none;
  font-size: 1.8rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  transition: transform 0.25s ease, background 0.25s ease;
  z-index: 10001;
}

.lightbox_close_btn:hover {
  transform: scale(1.1);
  background: var(--accent-gold-light);
}

.lightbox_caption {
  margin-top: 16px;
  color: var(--accent-gold-light);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-align: center;
}

.metric_badge i {
  color: var(--accent-green);
  font-size: 1.15rem;
  flex-shrink: 0;
}

.metric_badge strong {
  color: var(--accent-green);
  font-weight: 800;
  margin-left: 2px;
}

.modal_panel_item p {
  font-size: 1.02rem;
  color: var(--text-sub);
  line-height: 1.75;
  margin-bottom: 24px;
}

.about_metrics_list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}

.metric_badge {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface-cream);
  border: 1px solid rgba(42, 58, 46, 0.15);
  padding: 14px 20px;
  border-radius: 14px;
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--text-heading-dark);
  line-height: 1.5;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

.metric_badge i {
  color: var(--accent-green);
  font-size: 1.15rem;
  flex-shrink: 0;
}

.metric_badge strong {
  color: var(--accent-green);
  font-weight: 800;
  margin-left: 2px;
}

.about_feature_cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.pure_mini_card {
  background: var(--bg-card-light);
  padding: 32px 28px;
  border-radius: 16px;
  border: 1px solid var(--border-light);
  transition: all var(--transition-fast);
}

.pure_mini_card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.06);
  border-color: var(--accent-gold);
}

.pure_mini_card .num {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--accent-gold-dark);
  letter-spacing: 0.15em;
}

.pure_mini_card h4 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
}

.pure_mini_card p {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Section 02: 服務方案 (滾動驅動分頁舞台)
   ========================================================================== */
.solutions_pinned_section {
  height: 250vh;
  position: relative;
  /* padding: 0 !important; */
  padding-top: 60px;
  overflow: visible !important;
  background: radial-gradient(circle at 50% 35%, var(--bg-pain-dark) 0%, var(--bg-pain-deep) 100%);
  transition: background 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 房東惡夢主題 (Crimson Nightmare Dark) */
.solutions_pinned_section[data-theme="pain"] {
  background: radial-gradient(circle at 50% 35%, var(--bg-pain-ambient) 0%, var(--bg-pain-ambient-deep) 100%);
}

.solutions_pinned_section[data-theme="pain"] .bg_watermark_text {
  color: rgba(231, 111, 81, 0.06);
}

.solutions_pinned_section[data-theme="pain"] .solution_toggle_bar {
  border-color: rgba(217, 83, 56, 0.35);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 25px rgba(217, 83, 56, 0.15);
}

.solutions_pinned_section[data-theme="pain"] .solution_tab_glider {
  background: linear-gradient(135deg, var(--accent-coral-gradient-start) 0%, var(--accent-coral-gradient-end) 100%);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 20px rgba(217, 83, 56, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

/* 包租模式主題 (Royalty Gold Dark) */
.solutions_pinned_section[data-theme="bao"] {
  background: radial-gradient(circle at 50% 35%, var(--bg-bao-dark) 0%, var(--bg-bao-deep) 100%);
}

.solutions_pinned_section[data-theme="bao"] .bg_watermark_text {
  color: rgba(198, 167, 122, 0.06);
}

.solutions_pinned_section[data-theme="bao"] .solution_toggle_bar {
  border-color: rgba(198, 167, 122, 0.35);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 25px rgba(163, 130, 83, 0.15);
}

.solutions_pinned_section[data-theme="bao"] .solution_tab_glider {
  background: linear-gradient(135deg, var(--accent-gold-gradient-start) 0%, var(--accent-gold-gradient-end) 100%);
  border-color: rgba(255, 255, 255, 0.35);
  box-shadow: 0 4px 20px rgba(163, 130, 83, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

/* 代租代管主題 (Forest Emerald Green Dark) */
.solutions_pinned_section[data-theme="dai"] {
  background: radial-gradient(circle at 50% 35%, var(--bg-dai-dark) 0%, var(--bg-dai-deep) 100%);
}

.solutions_pinned_section[data-theme="dai"] .bg_watermark_text {
  color: rgba(79, 161, 108, 0.07);
}

.solutions_pinned_section[data-theme="dai"] .solution_toggle_bar {
  border-color: rgba(79, 161, 108, 0.35);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 25px rgba(43, 112, 68, 0.15);
}

.solutions_pinned_section[data-theme="dai"] .solution_tab_glider {
  background: linear-gradient(135deg, var(--accent-green-gradient-start) 0%, var(--accent-green-gradient-end) 100%);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 20px rgba(43, 112, 68, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.solutions_pinned_wrapper {
  position: sticky;
  top: 90px;
  height: calc(100vh - 90px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  width: 100%;
  padding-top: 16px;
}

.solution_toggle_bar {
  position: relative;
  display: inline-flex;
  align-items: center;
  align-self: center;
  justify-content: center;
  gap: 0;
  margin: 10px auto 20px auto;
  padding: 5px;
  border-radius: 999px;
  background: rgba(22, 14, 12, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transition: background 0.45s ease, border-color 0.45s ease, box-shadow 0.45s ease;
}

.solution_tab_glider {
  position: absolute;
  top: 0;
  left: 0;
  border-radius: 999px;
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  background: linear-gradient(135deg, var(--accent-coral-gradient-start) 0%, var(--accent-coral-gradient-end) 100%);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 20px rgba(217, 83, 56, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.35);
  will-change: transform, width, height;
  transition: transform 0.38s cubic-bezier(0.25, 1, 0.5, 1),
              width 0.38s cubic-bezier(0.25, 1, 0.5, 1),
              height 0.38s cubic-bezier(0.25, 1, 0.5, 1),
              background 0.45s ease,
              border-color 0.45s ease,
              box-shadow 0.45s ease,
              opacity 0.25s ease;
}

.pure_toggle_btn {
  position: relative;
  z-index: 2;
  padding: 10px 24px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid transparent;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  user-select: none;
  -webkit-user-select: none;
  transition: color 0.3s ease, transform 0.15s ease;
}

.pure_toggle_btn svg,
.pure_toggle_btn i[data-lucide] {
  width: 16px;
  height: 16px;
  stroke: rgba(255, 255, 255, 0.65);
  stroke-width: 2.2px;
  transition: stroke 0.3s ease;
}

.pure_toggle_btn:hover {
  color: var(--text-pure-white);
}

.pure_toggle_btn:hover svg,
.pure_toggle_btn:hover i[data-lucide] {
  stroke: var(--text-pure-white);
}

.pure_toggle_btn:active {
  transform: scale(0.97);
}

.pure_toggle_btn.active {
  color: var(--text-pure-white);
  font-weight: 700;
}

.pure_toggle_btn.active svg,
.pure_toggle_btn.active i[data-lucide] {
  stroke: var(--text-pure-white);
}

.solutions_horizontal_stage {
  position: relative;
  width: 100%;
  min-height: 480px;
  flex: 1;
  padding: 18px 6px 28px 6px;
  margin: -18px -6px -28px -6px;
}

.solutions_track {
  position: relative;
  width: 100%;
  min-height: 480px;
  height: 100%;
}

.solution_panel {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  padding: 6px 12px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  align-content: start;
  transform-origin: center top;
  will-change: transform, opacity, filter;
  transition: box-shadow 0.3s ease;
}

.solution_panel#tab-pain {
  z-index: 1;
}

.solution_panel#tab-bao {
  z-index: 2;
  opacity: 0;
  filter: blur(14px);
  transform: translate3d(0, 48px, 0);
  pointer-events: none;
}

.solution_panel#tab-dai {
  z-index: 3;
  opacity: 0;
  filter: blur(14px);
  transform: translate3d(0, 48px, 0);
  pointer-events: none;
}

.pure_dark_card {
  position: relative;
  overflow: hidden;
  background: var(--bg-card-dark);
  padding: 34px 28px;
  border-radius: 20px;
  border: 1px solid var(--border-dark);
  transition: all var(--transition-fast);
}

/* 惡夢卡片 (Nightmare Red 警示紅主題) */
.pure_dark_card.danger {
  border: 1px solid rgba(231, 111, 81, 0.28);
}

.pure_dark_card.danger .tag {
  color: var(--accent-coral);
}

.pure_dark_card.danger:hover {
  transform: translateY(-4px);
  border-color: var(--accent-coral);
  box-shadow: 0 16px 40px rgba(231, 111, 81, 0.25);
}

/* 包租卡片 (Bao Zhu 金色主題) */
.pure_dark_card.gold {
  border: 1px solid rgba(198, 167, 122, 0.28);
}

.pure_dark_card.gold .tag {
  color: var(--accent-gold);
}

.pure_dark_card.gold:hover {
  transform: translateY(-4px);
  border-color: var(--accent-gold);
  box-shadow: 0 16px 40px rgba(198, 167, 122, 0.25);
}

/* 代管卡片 (Dai Guan 翡翠綠主題) */
.pure_dark_card.green {
  border: 1px solid rgba(79, 161, 108, 0.35);
}

.pure_dark_card.green .tag {
  color: var(--accent-green-success);
}

.pure_dark_card.green:hover {
  transform: translateY(-4px);
  border-color: var(--accent-green-success);
  box-shadow: 0 16px 40px rgba(79, 161, 108, 0.25);
}

.pure_dark_card .tag {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--accent-gold);
  letter-spacing: 0.15em;
  display: inline-block;
  position: relative;
  z-index: 2;
}

.pure_dark_card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-pure-white);
  position: relative;
  z-index: 2;
}

.pure_dark_card p {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  position: relative;
  z-index: 2;
}

/* 巨型背景圖示浮印系統 (右上角背景) */
.card_ambient_watermark {
  position: absolute;
  top: -14px;
  right: -14px;
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  user-select: none;
  opacity: 0.12;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1;
}

.card_ambient_watermark svg,
.card_ambient_watermark i[data-lucide] {
  width: 98px;
  height: 98px;
  stroke-width: 0.75px;
}

/* 惡夢卡片背景浮印圖示 */
.pure_dark_card.danger .card_ambient_watermark svg,
.pure_dark_card.danger .card_ambient_watermark i[data-lucide] {
  stroke: var(--accent-coral);
}

/* 包租卡片背景浮印圖示 */
.pure_dark_card.gold .card_ambient_watermark svg,
.pure_dark_card.gold .card_ambient_watermark i[data-lucide] {
  stroke: var(--accent-gold);
}

/* 代管卡片背景浮印圖示 */
.pure_dark_card.green .card_ambient_watermark svg,
.pure_dark_card.green .card_ambient_watermark i[data-lucide] {
  stroke: var(--accent-green-success);
}

.pure_dark_card:hover .card_ambient_watermark {
  opacity: 0.38;
  transform: scale(1.14) rotate(-6deg);
}

/* ==========================================================================
   6. Section 3: Portfolio Cases (Interactive Before/After Draggable Slider)
   ========================================================================== */
.case_pure_block {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--bg-white);
  border: 1px solid rgba(42, 58, 46, 0.12);
  border-radius: 24px;
  padding: 32px;
  margin-bottom: 48px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04), 0 0 0px rgba(198, 167, 122, 0);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              filter 0.85s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.case_pure_block:hover {
  transform: translateY(-6px);
  border-color: rgba(198, 167, 122, 0.6) !important;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.08), 0 0 35px rgba(198, 167, 122, 0.22) !important;
}

.case_media_container {
  width: 100%;
}

/* 拖動式 Before/After 照片比對滑軌容器 */
.ba_slider_container {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 16px;
  overflow: hidden;
  user-select: none;
  touch-action: pan-y;
  --position: 50%;
}

.ba_layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.ba_layer img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ba_layer.after {
  width: 100%;
  clip-path: inset(0 0 0 var(--position, 50%));
  z-index: 1;
}

.ba_layer.before {
  width: 100%;
  clip-path: inset(0 calc(100% - var(--position, 50%)) 0 0);
  z-index: 2;
}

.ba_floating_label {
  position: absolute;
  top: 16px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  z-index: 3;
}

.ba_floating_label.after {
  right: 16px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--text-heading-dark);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.ba_floating_label.before {
  left: 16px;
  background: rgba(26, 26, 26, 0.85);
  color: var(--text-pure-white);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.ba_handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--position, 50%);
  width: 2px;
  background: var(--bg-white);
  z-index: 4;
  transform: translateX(-50%);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.4);
}

.ba_handle_button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg-white);
  color: var(--text-heading-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
  cursor: ew-resize;
  transition: transform 0.2s ease;
}

.ba_handle_button svg,
.ba_handle_button i[data-lucide] {
  width: 16px;
  height: 16px;
  stroke: var(--text-heading-dark);
  stroke-width: 2.2px;
}

.ba_slider_container:hover .ba_handle_button {
  transform: translate(-50%, -50%) scale(1.12);
}

.case_text_content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case_header_flex {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.case_header_flex h3 .case_subtitle {
  color: var(--text-muted);
}

/* 寵物友善 Corner Ribbon — 貼在 stats_row 右上角的斜切旗標 */
.pet_friendly_badge {
  position: absolute;
  top: 20px;
  right: -45px;
  z-index: 5;
  width: 160px;
  padding: 4px 0;
  background: linear-gradient(135deg, var(--accent-gold-bright-start) 0%, var(--accent-gold-bright-end) 100%);
  color: var(--text-pure-white);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: center;
  transform: rotate(45deg);
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
  display: flex;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  pointer-events: none;
}

.pet_friendly_badge svg {
  width: 20px;
  height: 20px;
  stroke: var(--text-pure-white);
  flex-shrink: 0;
}


.case_text_content h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

/* 租金提升動態計數數字區塊 */
.case_rent_increase_block {
  display: flex;
  align-items: baseline;
  gap: 6px;
}


/* 行動裝置 / 平板   RWD 響應式樣式 */
@media (max-width: 768px) {
  .case_rent_increase_block {
    width: 100%;
    justify-content: end;
  }

  .case_media_container{
    margin: 0 -16px;
    margin-top: -16px;
    width: calc(100% + 32px);
  }
  .ba_slider_container{
    border-radius:16px 16px 0 0;
  }

  .case_stats_row{
    border-width:0px !important;
    border-top-width: 1px !important;
    border-radius: 0 0 16px 16px !important;
    margin: 0 -16px -16px;
    padding-bottom: 50px !important;
    gap: 10px !important;
  }

  .pet_friendly_badge {
    top:auto;
    right:50%;
    bottom:0;
    width: 100%;
    transform: rotate(0deg) translateX(50%);
  }

}

.rent_inc_num {
  font-family: var(--font-en);
  font-size: 1.4rem;
  font-weight: 400; /* normal font weight */
  color: var(--accent-gold-dark);
  line-height: 1;
  letter-spacing: -0.01em;
  display: inline-block;
  will-change: transform;
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.rent_inc_num.pop_animated {
  transform: scale(1.15);
}

.rent_inc_lbl {
  font-size: 1rem;
  font-weight: 400; /* normal font weight */
  color: var(--text-muted);
  line-height: 1;
  letter-spacing: 0.02em;
}

.case_text_content p {
  font-size: 1rem;
  color: var(--text-body);
  line-height: 1.75;
  margin-bottom: 24px;
}

.case_stats_row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  background: var(--surface-warm-white);
  border: 1px solid rgba(42, 58, 46, 0.12);
  padding: 18px;
  border-radius: 16px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
  position: relative;
  overflow: hidden;
}

.stat_cell h6 {
  font-size: 1rem;
  color: var(--text-label-gray);
  font-weight: 600;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 7px;
}

.stat_cell h6 svg,
.stat_cell h6 i[data-lucide] {
  width: 19px;
  height: 19px;
  stroke: var(--accent-gold-dark);
  stroke-width: 1.6px;
  flex-shrink: 0;
}

.stat_cell p {
  font-family: var(--font-en);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent-green);
  margin: 0;
}

/* ==========================================================================
   7. Section 4: Spatial Standards Gallery (Museum Mosaic Drifter 漫遊展牆)
   ========================================================================== */
.standards_mosaic_section {
  position: relative !important;
  min-height: 100vh !important;
  min-height: 100dvh !important;
  height: auto !important;
  padding: 0 !important;
  overflow: hidden !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  background: var(--bg-dai-surface) !important;
}

/* 漫遊展牆全螢幕背景舞台 */
.standards_mosaic_bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
  z-index: 1;
}

.standards_mosaic_bg .mosaic_infinite_stage {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}

/* 漫遊相片卡片 (純背景裝飾，無點擊無干擾) */
.standards_mosaic_bg .mosaic_tile {
  position: absolute;
  top: 0;
  left: 0;
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-dai-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.6);
  will-change: transform;
  user-select: none;
  pointer-events: none;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  -webkit-transform: translate3d(0, 0, 0);
  transform: translate3d(0, 0, 0);
}

.standards_mosaic_bg .mosaic_tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: brightness(0.85) contrast(1.05);
  user-select: none;
  -webkit-user-drag: none;
}

/* 暗調柔光微暈遮罩 (確保前景 Slogan 對比清晰高雅) */
.standards_mosaic_bg .standards_visual_scrim {
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  background: radial-gradient(
    ellipse at center,
    rgba(13, 15, 14, 0.9) 0%,
    rgba(13, 15, 14, 0.3) 55%,
    rgba(13, 15, 14, 0.0) 100%
  );
}

/* 前景 Slogan 容器 (浮於背景動態之上) */
.standards_foreground_container {
  position: relative;
  z-index: 10;
  pointer-events: auto;
  text-align: center;
  max-width: 900px;
  padding: 0 24px;
}

.standards_foreground_container .pure_section_title_block {
  margin-bottom: 0 !important;
}

.standards_foreground_container .pure_giant_num {
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.8);
}

.standards_foreground_container .pure_zh_main {
  text-shadow: 0 6px 30px rgba(0, 0, 0, 0.95);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  margin-top: 12px;
  font-weight: 900;
}

.standards_foreground_container .pure_title_desc {
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.9);
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  margin: 16px auto 0;
  color: rgba(255, 255, 255, 0.88);
  max-width: 680px;
  line-height: 1.8;
}

/* Section 04 行動裝置 RWD 響應式微調 */
@media (max-width: 768px) {
  .standards_mosaic_section {
    min-height: 100vh !important;
    min-height: 100dvh !important;
  }
}

.gallery_pure_item {
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--border-light);
}

.dark_theme .gallery_pure_item {
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.gallery_pure_item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--transition-normal);
}

.gallery_pure_item:hover img {
  transform: scale(1.06);
}

/* ==========================================================================
   Section 05: 預約場勘與收益評估表單 & LINE@ 快速諮詢
   ========================================================================== */
.line_contact_wrapper {
  max-width: 840px;
  margin: 0 auto 36px;
}

.line_contact_card {
  background: var(--bg-white);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 24px;
  padding: 36px 44px;
  display: flex;
  align-items: center;
  gap: 40px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.05);
  transition: transform var(--transition-base, 0.3s ease), box-shadow var(--transition-base, 0.3s ease);
}

.line_contact_card:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.08);
}

.line_qr_col {
  flex-shrink: 0;
}

.line_qr_frame {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--bg-white);
  padding: 12px 12px 10px;
  border-radius: 18px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.line_qr_img {
  width: 140px;
  height: 140px;
  object-fit: contain;
  border-radius: 10px;
  display: block;
}

.line_qr_hint {
  margin-top: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.line_info_col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.line_contact_title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-heading-dark);
  letter-spacing: -0.01em;
}

.line_contact_desc {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.65;
}

.line_action_group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn_line_direct {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-line);
  color: var(--text-pure-white) !important;
  text-decoration: none;
  padding: 14px 28px;
  border-radius: 100px;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.03em;
  transition: all var(--transition-fast);
  box-shadow: 0 8px 20px rgba(6, 199, 85, 0.3);
}

.btn_line_direct:hover {
  background: var(--color-line-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(6, 199, 85, 0.4);
  color: var(--text-pure-white) !important;
}

.btn_line_direct .line_icon {
  flex-shrink: 0;
}

.btn_line_direct .btn_arrow {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.btn_line_direct:hover .btn_arrow {
  transform: translate(3px, -3px);
}

.line_direct_subtext {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-warm-gray);
  letter-spacing: 0.05em;
}

.line_or_divider {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 36px auto 32px;
  position: relative;
  text-align: center;
}

.line_or_divider::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: rgba(0, 0, 0, 0.08);
}

.line_or_text {
  position: relative;
  background: var(--bg-white);
  padding: 0 20px;
  color: var(--text-warm-gray);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.reserve_box_pure {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: 28px;
  padding: 56px 48px;
  max-width: 840px;
  margin: 0 auto;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
}

.white_theme .reserve_box_pure {
  background: var(--bg-white);
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.06);
}

.form_grid_pure {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.form_group_pure.full {
  grid-column: span 2;
}

.form_group_pure label {
  display: block;
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 800;
  color: var(--accent-gold);
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}

.white_theme .form_group_pure label {
  color: var(--accent-gold-dark);
}

.form_input_pure {
  width: 100%;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-dark);
  border-radius: 12px;
  color: var(--text-pure-white);
  font-size: 1rem;
  font-family: var(--font-zh);
  outline: none;
  transition: all var(--transition-fast);
}

.white_theme .form_input_pure {
  background: var(--surface-form-input);
  border: 1px solid var(--surface-border-subtle);
  color: var(--text-main);
}

.form_input_pure:focus {
  border-color: var(--accent-gold);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 4px rgba(198, 167, 122, 0.15);
}

.white_theme .form_input_pure:focus {
  background: var(--bg-white);
  border-color: var(--accent-green);
  box-shadow: 0 0 0 4px rgba(42, 58, 46, 0.12);
}

footer {
  padding: 48px 0;
  background: var(--bg-deep-dark);
  border-top: 1px solid var(--border-dark);
  color: var(--text-dim);
  font-size: 1rem;
}

.footer_container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.footer_left {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.footer_logo_link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.footer_logo {
  width: 80px;
  height: 80px;
  object-fit: contain;
  opacity: 0.9;
  filter: brightness(0) invert(1);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.footer_logo_link:hover .footer_logo {
  opacity: 1;
  transform: scale(1.06);
}

.footer_right {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: right;
}

.footer_right p {
  margin: 0;
  line-height: 1.6;
}

@media (max-width: 768px) {
  footer {
    padding: 40px 0;
  }

  .footer_container {
    flex-direction: column;
    text-align: center;
    gap: 18px;
  }

  .footer_right {
    width: 100%;
    text-align: center;
  }

  .footer_right p {
    font-size: clamp(1rem, 3.2vw, 1rem);
    line-height: 1.6;
    overflow-wrap: break-word;
  }
}

/* ==========================================================================
   9. Substance Lab Cinematic Blur-Fade Entrance Effect (.reveal_pure)
   ========================================================================== */
.reveal_pure {
  opacity: 0;
  filter: blur(14px);
  transform: translateY(28px);
  transition: filter 0.85s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.85s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: filter, opacity, transform;
}

.reveal_pure.active {
  opacity: 1;
  filter: blur(0px);
  transform: translateY(0);
}

/* ==========================================================================
   全局 RWD 響應式斷點 (行動裝置 / 平板)
   ========================================================================== */
@media (max-width: 1024px) {
  #navdesktop {
    width: calc(100% - 32px);
  }

  .about_mode_b_box {
    display: block;
  }

  .about_b_sidebar_toc {
    display: none !important;
  }

  .about_b_main_flow {
    width: 100%;
  }

  .about_track_card {
    padding: 24px;
    margin: 0 -24px;
    margin-bottom: 24px;
    width: calc(100% + 48px);
  }

  .about_pure_grid {
    grid-template-columns: 1fr;
  }

  .case_pure_block {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 16px;
  }

  .gallery_pure_3col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 992px) {
  #navdesktop {
    width: calc(100% - 24px);
    top: 12px;
    height: 54px;
    padding: 0 12px 0 16px;
    justify-content: space-between;
  }

  .nav_logo_text .zh {
    font-size: 1rem;
  }

  .nav_logo_text .en {
    font-size: 1rem;
  }

  /* 於行動裝置隱藏頂部按鈕，為 Logo 與漢堡選單按鈕預留空間 */
  #navdesktop > .nav_cta_btn {
    display: none !important;
  }

  .mobile_cta_li {
    display: block;
    margin-top: 6px;
  }

  .mobile_cta_li .nav_cta_btn {
    width: 100%;
    justify-content: center;
    padding: 12px 20px !important;
    font-size: 1rem !important;
  }

  .mobile_toggle_btn {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
    background: var(--accent-green) !important;
    border: none;
    border-radius: 50%;
    color: var(--text-pure-white) !important;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
    z-index: 1002;
    box-shadow: 0 3px 10px rgba(42, 58, 46, 0.2);
  }

  .mobile_toggle_btn:hover {
    background: var(--bg-white);
  }

  #navdesktop ul {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    padding: 16px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.15);
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    z-index: 999;
  }

  #navdesktop.nav_open ul {
    display: flex;
    animation: mobileNavFadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  }

  #navdesktop ul li a.nav_item_link {
    padding: 12px 18px;
    background: rgba(245, 247, 245, 0.9);
    border-radius: 16px;
    justify-content: flex-start;
    width: 100%;
  }

  #navdesktop ul li a.nav_item_link:hover {
    background: rgba(230, 238, 232, 1);
  }

  .bg_watermark_text {
    font-size: clamp(3.2rem, 15vw, 4.6rem);
    -webkit-text-stroke-width: 1px;
    letter-spacing: -0.02em;
    max-width: 100vw;
  }

  .pure_section_title_block {
    margin-bottom: 20px;
  }

  .pure_giant_num {
    font-size: 2.2rem;
    margin-bottom: 2px;
  }

  .pure_en_sub {
    font-size: 0.75rem;
    letter-spacing: 0.18em;
    margin-bottom: 4px;
  }

  .pure_zh_main {
    font-size: 1.48rem;
    line-height: 1.28;
  }

  .pure_title_desc {
    font-size: 1rem;
    line-height: 1.5;
  }

  .about_pure_grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .about_big_quote {
    font-size: 1rem;
    padding-left: 14px;
    border-left-width: 3px;
    line-height: 1.45;
  }

  .about_feature_cards {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .pure_mini_card {
    padding: 14px 12px;
    border-radius: 12px;
  }

  .pure_mini_card h4 {
    font-size: 1rem;
  }

  .pure_mini_card p {
    font-size: 1rem;
    line-height: 1.35;
  }

  .about_mode_a_box {
    margin-bottom: 36px;
  }

  .about_cards_container {
    gap: 20px;
  }

  .about_track_card {
    padding: 24px;
    border-radius: 18px;
    height: auto;
    overflow: visible;
  }

  .about_track_card .panel_tag {
    font-size: 0.8rem;
    margin-bottom: 4px;
  }

  .about_track_card h3 {
    font-size: 1.22rem;
    margin-bottom: 8px;
    line-height: 1.3;
  }

  .about_track_card .card_lead_desc {
    display: block;
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 12px;
  }

  .smart_steps_flow {
    gap: 0px;
  }
  .step_icon_wrapper {
    /* width: 40px;
    height: 40px; */
    border-radius: 10px;
    margin-bottom: 3px;
  }

  /* .step_illustration {
    max-width: 48px;
    max-height: 48px;
  } */

  .stat_highlight_grid.col3 {
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    margin-top: 8px;
  }

  .stat_highlight_grid.col2 {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 8px;
    margin-top: 8px;
  }

  .persona_card_grid {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }

  .persona_item {
    flex-direction: column;
    gap: 5px;
  }

  .persona_avatar {
    width: 48px;
    height: 48px;
  }

  .persona_avatar svg,
  .persona_avatar i[data-lucide] {
    width: 40px;
    height: 40px;
  }

  .persona_info {
    flex-direction: column;
    text-align: center;
  }

  .persona_title {
    font-size: 1rem;
  }

  .persona_sub {
    font-size: 1rem;
  }

  .guarantee_compare_box {
    gap: 5px;
  }

  .compare_header {
    grid-template-columns: 1fr 18px 1fr;
    gap: 4px;
  }

  .compare_badge {
    padding: 3px 6px;
    font-size: 1rem;
    gap: 4px;
  }

  .compare_badge svg,
  .compare_badge i[data-lucide] {
    width: 12px;
    height: 12px;
  }

  .compare_header_arrow {
    font-size: 1rem;
  }

  .compare_rows_group {
    gap: 4px;
  }

  .compare_row {
    grid-template-columns: 1fr 18px 1fr;
    gap: 4px;
    padding: 5px 6px;
    font-size: 1rem;
    line-height: 1.25;
  }

  .compare_left {
    font-size: 1rem;
  }

  .compare_arrow {
    font-size: 1rem;
  }

  .compare_right {
    font-size: 1rem;
  }

  .bento_card_inner {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .bento_visual_cell {
    height: auto !important;
  }

  .bento_visual_cell img {
    height: 250px !important;
    min-height: unset !important;
    object-fit: cover !important;
  }

  .bento_stats_column {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .bento_stat_pill {
    padding: 4px 6px;
    gap: 5px;
  }

  .bento_stat_pill .stat_pill_icon {
    width: 48px;
    height: 48px;
    border-radius: 0;
    background: transparent;
  }

  .bento_stat_pill .stat_pill_icon svg,
  .bento_stat_pill .stat_pill_icon i[data-lucide] {
    width: 32px;
    height: 32px;
  }

  .bento_stat_pill .stat_title {
    font-size: 1rem;
    line-height: 1.2;
  }

  .bento_stat_pill .stat_subtitle {
    font-size: 1rem;
    line-height: 1.2;
  }

  .stat_tile {
    padding: 6px 4px;
    border-radius: 10px;
  }

  .stat_icon {
    width: 30px;
    height: 30px;
    margin-bottom: 3px;
  }

  .stat_icon svg,
  .stat_icon i[data-lucide] {
    width: 28px;
    height: 28px;
  }

  .stat_val {
    font-size: 1rem;
    line-height: 1.15;
    margin-bottom: 2px;
  }

  .stat_lbl {
    font-size: 0.875rem;
  }

  .line_contact_card {
    flex-direction: column;
    text-align: center;
    padding: 32px 20px;
    gap: 24px;
  }

  .line_info_col {
    align-items: center;
  }

  .line_action_group {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }

  .btn_line_direct {
    width: 100%;
    justify-content: center;
  }

  .reserve_box_pure {
    padding: 32px 24px;
  }

  .form_grid_pure {
    grid-template-columns: 1fr;
  }

  .form_group_pure.full {
    grid-column: span 1;
  }
}

/* Section 02 行動裝置 RWD 響應式樣式 (垂直滾動舞台) */
@media (max-width: 768px) {
  .solutions_pinned_section {
    height: auto !important;
    padding: 50px 0 60px 0 !important;
  }
  .solutions_pinned_wrapper {
    position: relative !important;
    top: 0 !important;
    height: auto !important;
    overflow: visible !important;
    padding-top: 0 !important;
  }
  .solutions_horizontal_stage {
    overflow: visible !important;
    height: auto !important;
    padding: 0 !important;
    margin: 16px 0 0 0 !important;
  }
  .solutions_track {
    display: flex !important;
    flex-direction: column !important;
    width: 100% !important;
    transform: none !important;
    gap: 48px !important;
  }
  .solution_panel,
  .solution_panel#tab-pain,
  .solution_panel#tab-bao,
  .solution_panel#tab-dai {
    position: relative !important;
    width: 100% !important;
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 20px !important;
    opacity: 0.45;
    filter: none !important;
    pointer-events: auto !important;
    transform: scale(0.98) !important;
    transition: opacity 0.5s ease, transform 0.5s ease;
    padding: 0 !important;
    margin: 0 !important;
    scroll-margin-top: 120px;
  }
  .solution_panel.active,
  .solution_panel#tab-pain.active,
  .solution_panel#tab-bao.active,
  .solution_panel#tab-dai.active {
    opacity: 1 !important;
    transform: scale(1) !important;
  }
  .solution_toggle_bar {
    position: sticky;
    top: 60px;
    z-index: 100;
    padding: 4px;
    margin: 16px 0 28px 0;
    gap: 6px;
    border-radius: 999px;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    background: rgba(18, 10, 8, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: background 0.4s ease, border-color 0.4s ease;
  }

  .solutions_pinned_section[data-theme="pain"] .solution_toggle_bar {
    background: rgba(34, 11, 8, 0.88);
    border-color: rgba(217, 83, 56, 0.3);
  }

  .solutions_pinned_section[data-theme="bao"] .solution_toggle_bar {
    background: rgba(30, 24, 16, 0.88);
    border-color: rgba(198, 167, 122, 0.3);
  }

  .solutions_pinned_section[data-theme="dai"] .solution_toggle_bar {
    background: rgba(10, 28, 18, 0.88);
    border-color: rgba(79, 161, 108, 0.3);
  }

  .pure_toggle_btn {
    padding: 8px 14px !important;
    font-size: 1rem !important;
    gap: 5px !important;
  }
  .pure_toggle_btn svg,
  .pure_toggle_btn i[data-lucide] {
    width: 14px !important;
    height: 14px !important;
    display: none;
  }
  .pure_dark_card {
    padding: 28px 22px !important;
  }
}

@keyframes mobileNavFadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}