/* ============================================================
   星牧數位行銷 XingMu Digital Marketing — 共用設計系統
   Stripe 紫色系統，統一 .nav-* 命名，無 .navbar-* 遺留
   v11
   ============================================================ */

/* ===== 設計變數 ===== */
:root {
  --color-brand-500: #533afd;
  --color-brand-hover: #4434d4;
  --color-brand-light: rgba(83,58,253,0.05);
  --color-heading: #061b31;
  --color-body: #64748b;
  --color-label: #273951;
  --color-surface: #ffffff;
  --color-surface-raised: #F7F7FB;
  --color-dark: #1c1e54;
  --color-dark-deep: #0a0b1a;
  --color-border: #e5edf5;
  --color-success: #15be53;
  --shadow-card: 0 8px 32px rgba(83,58,253,0.08);
  --shadow-card-hover: 0 12px 40px rgba(83,58,253,0.16);
  --shadow-nav: 0 1px 16px rgba(83,58,253,0.08);
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-full: 9999px;
  --font-sans: 'Inter', 'Noto Sans TC', system-ui, sans-serif;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 80px;
  --container-max: 1080px;
  --container-padding: 24px;
  --nav-height: 64px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);

  /* 向後相容別名（pricing 頁使用） */
  --brand-50: rgba(83,58,253,0.05);
  --brand-100: rgba(83,58,253,0.10);
  --brand-200: rgba(83,58,253,0.18);
  --brand-500: #533afd;
  --brand-600: #533afd;
  --brand-700: #4434d4;
  --accent-50: rgba(234,34,97,0.05);
  --accent-100: rgba(234,34,97,0.10);
  --accent-500: #ea2261;
  --accent-600: #ea2261;
  --success: #15be53;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --gray-950: #020617;
  --max-w: 1080px;
  --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px; --sp-4: 16px; --sp-5: 20px;
  --sp-6: 24px; --sp-8: 32px; --sp-10: 40px; --sp-12: 48px;
  --sp-16: 64px; --sp-20: 80px; --sp-24: 96px;
  --radius-2xl: 16px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.10);
}

/* ===== Reset / 基礎樣式 ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  font-family: var(--font-sans);
  color: var(--color-body);
  background: var(--color-surface);
  line-height: 1.6;
  letter-spacing: -0.01em;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* 螢幕閱讀器專用隱藏文字 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ===== 字體階層（向後相容）===== */
.h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--color-heading);
}
.h2 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-heading);
}
.h3 {
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 400;
  line-height: 1.3;
  color: var(--color-heading);
}
.h4 {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-heading);
}
.body-lg {
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.7;
  color: var(--color-body);
}
.body { font-size: 15px; line-height: 1.65; color: var(--color-body); }
.body-sm { font-size: 13px; line-height: 1.6; color: var(--color-body); }
.caption { font-size: 12px; line-height: 1.5; color: var(--color-body); }
.label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-brand-500);
  display: block;
  margin-bottom: var(--space-sm);
}

/* ===== 佈局 ===== */
.container {
  width: min(calc(100% - calc(var(--container-padding) * 2)), var(--container-max));
  margin: 0 auto;
}
.section {
  padding: var(--space-3xl) 0;
}
.section-alt {
  background: var(--color-surface-raised);
}
.section-dark {
  background: var(--color-dark);
}
.section-header {
  max-width: 600px;
  margin-bottom: var(--space-2xl);
}
.section-header.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section-header .h2 { margin-top: var(--space-sm); }
.section-header .body-lg { margin-top: var(--space-md); }

/* ===== 按鈕 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 14px;
  border-radius: var(--radius-md);
  padding: 10px 22px;
  transition: all 200ms var(--ease);
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--color-brand-500);
  color: #ffffff;
  border-color: var(--color-brand-500);
  box-shadow: 0 2px 8px rgba(83,58,253,0.2);
}
.btn-primary:hover {
  background: var(--color-brand-hover);
  border-color: var(--color-brand-hover);
  box-shadow: 0 4px 16px rgba(83,58,253,0.3);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0); }
.btn-ghost {
  background: transparent;
  color: var(--color-brand-500);
  border-color: var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-brand-light);
  border-color: rgba(83,58,253,0.2);
}
.btn-ghost-dark {
  background: transparent;
  color: var(--color-heading);
  border-color: var(--color-border);
}
.btn-ghost-dark:hover {
  background: var(--color-surface-raised);
  border-color: #c0ccd8;
}
.btn-lg {
  padding: 13px 28px;
  font-size: 15px;
}
.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ===== 標籤（tag）===== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  background: var(--color-brand-light);
  color: var(--color-brand-500);
  border: 1px solid rgba(83,58,253,0.15);
}
.tag-neutral {
  background: var(--color-surface-raised);
  color: var(--color-label);
  border-color: var(--color-border);
}

/* ===== 卡片 ===== */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: box-shadow 200ms var(--ease), transform 200ms var(--ease);
}
.card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

/* ===== Nav ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 200ms var(--ease);
}
.nav.scrolled {
  box-shadow: var(--shadow-nav);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.nav-logo img {
  height: 32px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}
.nav-links > li {
  position: relative;
}
.nav-links > li > a,
.nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 7px 12px;
  font-size: 14px;
  font-weight: 400;
  color: var(--color-label);
  border-radius: var(--radius-md);
  transition: background 150ms var(--ease), color 150ms var(--ease);
  background: transparent;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
}
.nav-links > li > a:hover,
.nav-dropdown-trigger:hover {
  color: var(--color-heading);
  background: var(--color-surface-raised);
}
.nav-links > li > a.active,
.nav-links > li > a[style*="color:var(--color-brand-500)"] {
  color: var(--color-brand-500);
}

/* Nav CTA 桌面版 */
.nav-cta {
  margin-left: var(--space-md);
  flex-shrink: 0;
}
.nav-cta-desktop {
  padding: 8px 18px;
  font-size: 13px;
}

/* 漢堡選單（預設隱藏，1024px 以下顯示）*/
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  border-radius: var(--radius-md);
  transition: background 150ms var(--ease);
}
.nav-toggle:hover {
  background: var(--color-surface-raised);
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-heading);
  border-radius: 1px;
  transition: transform 280ms var(--ease), opacity 280ms var(--ease);
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 行動版 CTA（桌面隱藏）*/
.nav-cta-mobile {
  display: none;
}

/* ===== Nav Chevron（Mega Menu 箭頭）===== */
.nav-chevron {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  transition: transform 200ms var(--ease);
}
.nav-dropdown-trigger[aria-expanded="true"] .nav-chevron {
  transform: rotate(180deg);
}

/* ===== Mega Menu ===== */
.mega-menu {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  z-index: 999;
  visibility: hidden;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity 180ms var(--ease), transform 180ms var(--ease), visibility 0s 180ms;
}
.mega-menu.is-open {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  transition: opacity 180ms var(--ease), transform 180ms var(--ease), visibility 0s 0s;
}
.mega-menu__backdrop {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(6,27,49,0.12);
}
.mega-menu__container {
  position: relative;
  z-index: 1;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 20px 40px rgba(83,58,253,0.08), 0 4px 12px rgba(0,0,0,0.04);
}
.mega-menu__scrollable {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-xl) var(--container-padding);
  max-height: calc(100vh - 128px);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}
.mega-menu__scrollable::-webkit-scrollbar { width: 4px; }
.mega-menu__scrollable::-webkit-scrollbar-track { background: transparent; }
.mega-menu__scrollable::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 2px;
}
.mega-menu__column {
  padding: 0 var(--space-lg);
  border-right: 1px solid var(--color-border);
}
.mega-menu__column:first-child { padding-left: 0; }
.mega-menu__column:last-child {
  border-right: none;
  padding-right: 0;
}
.mega-menu__group-title {
  font-size: 10px;
  font-weight: 500;
  color: var(--color-body);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0 var(--space-sm);
  margin-bottom: var(--space-sm);
}
.mega-menu__item {
  display: block;
  padding: 9px var(--space-sm);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background 130ms var(--ease);
  margin-bottom: 2px;
}
.mega-menu__item:hover {
  background: var(--color-surface-raised);
}
.mega-menu__item-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-heading);
  line-height: 1.3;
  margin-bottom: 2px;
}
.mega-menu__item-desc {
  font-size: 12px;
  font-weight: 400;
  color: var(--color-body);
  line-height: 1.4;
}
.mega-menu__item:hover .mega-menu__item-title {
  color: var(--color-brand-500);
}

/* ===== Hero（深色漸層）===== */
.hero {
  position: relative;
  padding-top: calc(var(--nav-height) + 80px);
  padding-bottom: var(--space-3xl);
  background: linear-gradient(160deg, var(--color-dark-deep) 0%, var(--color-dark) 100%);
  overflow: hidden;
  min-height: 600px;
  text-align: center;
}
.hero-3d-canvas {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(83,58,253,0.18) 0%, transparent 60%);
  pointer-events: none;
  z-index: 2;
}
.hero .container {
  position: relative;
  z-index: 3;
}

/* Hero 文字 */
.hero-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 300;
  color: #ffffff;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-md);
}
.hero-subtitle {
  font-size: clamp(14px, 1.4vw, 17px);
  color: rgba(255,255,255,0.6);
  font-weight: 400;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-xl);
}
.hero-desc {
  font-size: clamp(14px, 1.4vw, 16px);
  color: rgba(255,255,255,0.65);
  line-height: 1.75;
  max-width: 580px;
  margin: 0 auto var(--space-xl);
}
.hero-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 14px 5px 8px;
  background: rgba(83,58,253,0.25);
  border: 1px solid rgba(83,58,253,0.4);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 400;
  color: rgba(255,255,255,0.85);
  margin-bottom: var(--space-lg);
}
.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #5bf0a8;
  flex-shrink: 0;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(91,240,168,0.5); }
  50% { box-shadow: 0 0 0 5px rgba(91,240,168,0); }
}

/* Hero 底部業務線 icon 快覽 */
.hero-services-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xl);
  margin-top: var(--space-3xl);
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255,255,255,0.08);
  flex-wrap: wrap;
}
.hero-service-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: rgba(255,255,255,0.55);
  font-size: 13px;
  font-weight: 400;
}
.hero-service-item svg {
  width: 18px;
  height: 18px;
  opacity: 0.7;
}

/* ===== 服務卡片（service-card）===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}
.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 200ms var(--ease), transform 200ms var(--ease);
  display: flex;
  flex-direction: column;
}
.service-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}
.service-card-accent {
  height: 3px;
  background: var(--color-brand-500);
  width: 100%;
  flex-shrink: 0;
}
.service-card-body {
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  flex: 1;
}
.service-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  background: var(--color-brand-light);
  color: var(--color-brand-500);
  margin-bottom: var(--space-md);
  flex-shrink: 0;
}
.service-card-icon svg {
  width: 22px;
  height: 22px;
}
.service-card-scenario {
  font-size: 11px;
  color: var(--color-brand-500);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}
.service-card-title {
  font-size: 18px;
  font-weight: 400;
  color: var(--color-heading);
  margin-bottom: 2px;
}
.service-card-brand {
  font-size: 12px;
  color: var(--color-body);
  margin-bottom: var(--space-md);
}
.service-card-desc {
  font-size: 13px;
  color: var(--color-body);
  line-height: 1.7;
  flex: 1;
  margin-bottom: var(--space-lg);
}
.service-card-cta {
  align-self: flex-start;
  font-size: 13px;
  color: var(--color-brand-500);
  font-weight: 500;
  transition: color 150ms var(--ease);
}
.service-card-cta:hover {
  color: var(--color-brand-hover);
}

/* ===== 品牌卡片（向後相容）===== */
.brands-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}
.brand-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: box-shadow 200ms var(--ease), transform 200ms var(--ease);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  border-left-width: 3px;
}
.brand-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}
.brand-card-livesboost { border-left-color: var(--color-brand-500); }
.brand-card-ldauto { border-left-color: var(--color-brand-hover); }
.brand-card-lens { border-left-color: var(--color-heading); }

.brand-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  margin-bottom: var(--space-md);
  flex-shrink: 0;
}
.brand-card-icon-blue  { background: var(--color-brand-light); color: var(--color-brand-500); }
.brand-card-icon-navy  { background: rgba(68,52,212,0.08); color: var(--color-brand-hover); }
.brand-card-icon-dark  { background: var(--color-surface-raised); color: var(--color-heading); }
.brand-card-icon svg { width: 22px; height: 22px; }

.brand-card-tag { margin-bottom: var(--space-md); align-self: flex-start; }
.brand-card-title {
  font-size: 18px;
  font-weight: 400;
  color: var(--color-heading);
  margin-bottom: 2px;
}
.brand-card-subtitle {
  font-size: 12px;
  color: var(--color-body);
  margin-bottom: var(--space-md);
}
.brand-card-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-body);
  flex: 1;
  margin-bottom: var(--space-md);
}
.brand-card-keypoint {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-label);
  padding: 4px 10px;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
  align-self: flex-start;
}
.brand-card-keypoint::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-brand-500);
  flex-shrink: 0;
}
.brand-card-cta {
  align-self: flex-start;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-brand-500);
  padding: 8px 16px;
  background: var(--color-brand-light);
  border: 1px solid rgba(83,58,253,0.15);
  border-radius: var(--radius-md);
  transition: all 180ms var(--ease);
}
.brand-card-cta:hover {
  background: rgba(83,58,253,0.1);
  border-color: rgba(83,58,253,0.25);
}

/* ===== 核心優勢 2x2 ===== */
.advantages-grid-2x2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}
.advantage-card-2x2 {
  padding: var(--space-xl);
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
}
.advantage-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.advantage-icon-wrap svg { width: 22px; height: 22px; }
.advantage-icon-blue  { background: var(--color-brand-light); color: var(--color-brand-500); }
.advantage-icon-teal  { background: rgba(234,34,97,0.06); color: #ea2261; }
.advantage-icon-green { background: rgba(21,190,83,0.08); color: #108c3d; }
.advantage-icon-orange { background: rgba(245,158,11,0.08); color: #c2410c; }
.advantage-content .h4 { margin-bottom: var(--space-sm); }
.advantage-content .body-sm { color: var(--color-body); }

/* ===== 成果數據（stat）===== */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}
.stat-item {
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}
.stat-number {
  font-size: 36px;
  font-weight: 300;
  color: var(--color-heading);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: var(--space-sm);
}
.stat-label {
  font-size: 13px;
  color: var(--color-body);
  font-weight: 400;
  line-height: 1.4;
}

/* 向後相容 trust-data 命名 */
.trust-data-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}
.trust-data-item {
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}
.trust-data-value {
  font-size: 36px;
  font-weight: 300;
  color: var(--color-heading);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: var(--space-sm);
}
.trust-data-label {
  font-size: 13px;
  color: var(--color-body);
  font-weight: 400;
  line-height: 1.4;
}

/* ===== FAQ 手風琴 ===== */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: grid;
  gap: var(--space-sm);
}
.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 180ms var(--ease);
}
.faq-item:hover {
  border-color: #c0ccd8;
}
.faq-item.open {
  border-color: rgba(83,58,253,0.3);
  box-shadow: 0 2px 12px rgba(83,58,253,0.06);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  width: 100%;
  padding: var(--space-lg) var(--space-xl);
  font-size: 15px;
  font-weight: 400;
  color: var(--color-heading);
  text-align: left;
  transition: color 150ms var(--ease);
}
.faq-item.open .faq-question {
  color: var(--color-brand-500);
}
.faq-chevron {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--color-body);
  transition: transform 280ms var(--ease);
}
.faq-item.open .faq-chevron {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 320ms var(--ease);
}
.faq-answer-inner {
  padding: 0 var(--space-xl) var(--space-lg);
  color: var(--color-body);
  line-height: 1.75;
  font-size: 14px;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: var(--space-3xl) 0;
  background: var(--color-dark);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(83,58,253,0.15), transparent 60%);
  pointer-events: none;
}
.cta-inner {
  text-align: center;
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin: 0 auto;
}
.cta-inner .h2 {
  color: #ffffff;
  margin-bottom: var(--space-md);
}
.cta-inner .body-lg {
  color: rgba(255,255,255,0.6);
  margin-bottom: var(--space-xl);
}
.cta-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-2xl);
}
.cta-section .btn-primary {
  background: #ffffff;
  color: var(--color-heading);
  border-color: #ffffff;
  box-shadow: 0 2px 12px rgba(255,255,255,0.15);
}
.cta-section .btn-primary:hover {
  background: rgba(255,255,255,0.9);
  transform: translateY(-1px);
}
.cta-section .btn-ghost {
  background: transparent;
  color: rgba(255,255,255,0.8);
  border-color: rgba(255,255,255,0.2);
}
.cta-section .btn-ghost:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.35);
  color: #ffffff;
}

/* ===== 聯繫表單 ===== */
.contact-form {
  max-width: 540px;
  margin: var(--space-2xl) auto 0;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}
.form-group {
  margin-bottom: var(--space-md);
}
.form-label {
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: rgba(255,255,255,0.6);
  margin-bottom: 5px;
}
.form-input,
.form-textarea {
  width: 100%;
  padding: 10px 12px;
  font-size: 14px;
  font-family: var(--font-sans);
  color: #ffffff;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color 150ms var(--ease), box-shadow 150ms var(--ease);
}
.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(255,255,255,0.25);
}
.form-input:focus,
.form-textarea:focus {
  border-color: rgba(83,58,253,0.6);
  box-shadow: 0 0 0 3px rgba(83,58,253,0.15);
  background: rgba(255,255,255,0.08);
}
.form-textarea {
  resize: vertical;
  min-height: 96px;
}
.contact-form .btn-primary {
  width: 100%;
  background: var(--color-brand-500);
  color: #ffffff;
  border-color: var(--color-brand-500);
  margin-top: var(--space-sm);
}
.contact-form .btn-primary:hover {
  background: var(--color-brand-hover);
}
.form-success {
  text-align: center;
  color: #5bf0a8;
  font-size: 13px;
  margin-top: var(--space-md);
  font-weight: 400;
}
.form-success.hidden {
  display: none;
}

/* ===== Footer ===== */
.footer {
  background: var(--color-dark-deep);
  padding: var(--space-3xl) 0 var(--space-xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}
.footer-brand p {
  font-size: 13px;
  line-height: 1.75;
  color: rgba(255,255,255,0.4);
  max-width: 280px;
  margin-top: var(--space-md);
}
.footer-logo {
  display: inline-flex;
  align-items: center;
}
.footer-logo img {
  height: 28px;
  width: auto;
}
.footer-col-title {
  font-size: 11px;
  font-weight: 500;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}
.footer-col a {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  padding: 4px 0;
  transition: color 140ms var(--ease);
}
.footer-col a:hover {
  color: rgba(255,255,255,0.85);
}
.footer-address {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: var(--space-lg);
  margin-bottom: var(--space-md);
  font-size: 12px;
  color: rgba(255,255,255,0.3);
  line-height: 1.8;
  font-style: normal;
}
.footer-address strong {
  color: rgba(255,255,255,0.55);
}
.footer-address a {
  color: rgba(255,255,255,0.35);
  transition: color 140ms var(--ease);
}
.footer-address a:hover {
  color: rgba(255,255,255,0.7);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.footer-bottom p {
  font-size: 12px;
  color: rgba(255,255,255,0.3);
}
.footer-bottom-links {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}
.footer-bottom-links a {
  font-size: 12px;
  color: rgba(255,255,255,0.35);
  transition: color 140ms var(--ease);
}
.footer-bottom-links a:hover {
  color: rgba(255,255,255,0.7);
}
/* pricing 頁極簡 footer 向後相容 */
.footer-line {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.footer-line p {
  font-size: 12px;
  color: rgba(255,255,255,0.3);
}

/* ===== 動畫 ===== */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 靜態 Logo fallback 浮動動畫 */
@keyframes float {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50%       { transform: translate(-50%, -52%) scale(1.02); }
}

/* gradient-text（Hero 強調色）*/
.gradient-text {
  background: linear-gradient(135deg, #a78bfa, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== 響應式 ===== */

/* 1024px：導航收合，切換漢堡選單 */
@media (max-width: 1024px) {

  /* 隱藏桌面導航連結和 CTA */
  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    height: calc(100dvh - var(--nav-height));
    flex-direction: column;
    align-items: stretch;
    background: #ffffff;
    padding: var(--space-lg);
    gap: 3px;
    border-top: 1px solid var(--color-border);
    z-index: 9999;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  .nav-links.open {
    display: flex;
  }

  /* 行動版 nav 連結樣式 */
  .nav-links > li {
    width: 100%;
  }
  .nav-links > li > a,
  .nav-dropdown-trigger {
    display: flex;
    width: 100%;
    padding: 13px var(--space-md);
    font-size: 15px;
    font-weight: 400;
    color: var(--color-heading);
    border-radius: var(--radius-lg);
  }
  .nav-links > li > a:hover,
  .nav-dropdown-trigger:hover {
    background: var(--color-surface-raised);
  }

  /* dropdown trigger 佔滿寬度 */
  .nav-dropdown-trigger {
    justify-content: space-between;
    width: 100%;
  }

  /* 行動版 CTA */
  .nav-cta-mobile {
    display: block;
    margin-top: var(--space-md);
    padding: 0;
  }
  .nav-cta-mobile .btn {
    display: flex;
    width: 100%;
    justify-content: center;
    padding: 14px var(--space-xl);
    font-size: 15px;
  }

  /* 桌面 CTA 隱藏，漢堡顯示 */
  .nav-cta-desktop { display: none; }
  .nav-toggle { display: flex; }

  /* 行動版 Mega Menu：position static，單欄展開 */
  .mega-menu {
    position: static;
    top: auto;
    left: auto;
    right: auto;
    bottom: auto;
    transform: none;
    visibility: hidden;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    pointer-events: none;
    transition: opacity 180ms var(--ease), max-height 300ms var(--ease);
    margin-top: 3px;
  }
  .mega-menu.is-open {
    visibility: visible;
    opacity: 1;
    max-height: 3000px;
    pointer-events: auto;
  }
  .mega-menu__container {
    border: none;
    box-shadow: none;
    background: var(--color-surface-raised);
    border-radius: var(--radius-lg);
  }
  .mega-menu__scrollable {
    display: block;
    padding: var(--space-md);
    max-width: none;
    max-height: none;
  }
  .mega-menu__column {
    padding: 0;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--space-md);
    margin-bottom: var(--space-md);
  }
  .mega-menu__column:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
  }
  .mega-menu__backdrop { display: none; }
  .mega-menu__item { padding: 8px var(--space-sm); }
  .mega-menu__item-title { font-size: 13px; }
  .mega-menu__item-desc { font-size: 11px; }

  /* 版面佈局調整 */
  .hero-services-bar { gap: var(--space-xl); }
  .services-grid { grid-template-columns: 1fr 1fr; }
  .brands-grid { grid-template-columns: 1fr 1fr; }
  .advantages-grid-2x2 { grid-template-columns: 1fr 1fr; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .trust-data-row { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; gap: var(--space-lg); }
}

/* 640px：手機版 */
@media (max-width: 640px) {
  .container {
    width: calc(100% - 32px);
  }
  .section {
    padding: var(--space-2xl) 0;
  }
  .hero {
    padding-top: calc(var(--nav-height) + 48px);
    padding-bottom: var(--space-2xl);
  }
  .hero-title {
    font-size: clamp(24px, 6vw, 36px);
  }
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  .hero-actions .btn {
    width: 100%;
    max-width: 320px;
  }
  .hero-services-bar {
    gap: var(--space-lg);
    justify-content: flex-start;
  }
  .services-grid { grid-template-columns: 1fr; }
  .brands-grid { grid-template-columns: 1fr; }
  .advantages-grid-2x2 { grid-template-columns: 1fr; }
  .advantage-card-2x2 { flex-direction: column; gap: var(--space-md); }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .stat-number { font-size: 28px; }
  .trust-data-row { grid-template-columns: 1fr 1fr; }
  .trust-data-value { font-size: 28px; }
  .form-row { grid-template-columns: 1fr; }
  .faq-question { padding: var(--space-md) var(--space-lg); font-size: 14px; }
  .faq-answer-inner { padding: 0 var(--space-lg) var(--space-md); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
  .footer-brand { grid-column: 1 / -1; }
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; max-width: 280px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ===== prefers-reduced-motion ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fade-up { transition: none; }
  .hero-badge-dot { animation: none; }
  @keyframes float { 0%, 100% { transform: translate(-50%, -50%); } }
}