/* ============================================================
   VistaFutureAI.com 玄藍科技風視覺系統 v3.1
   深空玄藍 · 極光漸變（藍→青→紫）· 玻璃擬態 · 霓虹光暈
   設計參考：Linear / Modal / Runway 國際 AI 品牌深色科技風
   ============================================================ */
:root {
  --bg-deep: #0b1526;
  --bg-deep-2: #101c33;
  --bg-elev: #16233d;
  --bg-card: rgba(90, 140, 255, 0.05);
  --bg-card-hover: rgba(90, 140, 255, 0.10);
  --border-glass: rgba(110, 160, 255, 0.14);
  --primary: #3d7bff;
  --primary-2: #6ea4ff;
  --cyan: #00d0ff;
  --violet: #7b5cff;
  --accent: #ff9a3c;
  --accent-2: #ffb36b;
  --text-main: #eef3ff;
  --text-sub: #98abd4;
  --text-dim: #56658f;
  --grad-main: linear-gradient(120deg, #3d7bff 0%, #00d0ff 45%, #7b5cff 100%);
  --grad-cta: linear-gradient(135deg, #ff9a3c 0%, #ff5e3c 100%);
  --grad-line: linear-gradient(90deg, transparent, rgba(61, 123, 255, 0.55), rgba(0, 208, 255, 0.55), rgba(123, 92, 255, 0.55), transparent);
  --radius: 18px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  --glow-primary: 0 0 24px rgba(61, 123, 255, 0.45);
  --glow-cyan: 0 0 24px rgba(0, 208, 255, 0.38);
  --glow-violet: 0 0 24px rgba(123, 92, 255, 0.35);
  --maxw: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Sans TC", "Microsoft JhengHei", "PingFang TC", Arial, sans-serif;
  background:
    radial-gradient(1200px 800px at 82% -10%, rgba(61, 123, 255, 0.10), transparent 60%),
    radial-gradient(1000px 700px at -10% 18%, rgba(123, 92, 255, 0.08), transparent 60%),
    radial-gradient(900px 700px at 50% 110%, rgba(0, 208, 255, 0.06), transparent 60%),
    linear-gradient(180deg, #0b1526 0%, #101c33 50%, #0b1526 100%);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

/* 表單控制項繼承整體字型，避免回退到瀏覽器預設 */
button, input, select, textarea { font-family: inherit; }

/* 簡體中文：優先使用簡體字型堆疊，解決繁體字型渲染簡體字問題 */
html:lang(zh-hans) body,
body.zh-hans {
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
}

/* ============================================================
   背景特效：網格 ＋ 極光 ＋ 星點 ＋ 光暈
   ============================================================ */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    linear-gradient(rgba(61, 123, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 123, 255, 0.06) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 25%, transparent 78%);
  mask-image: radial-gradient(ellipse at 50% 0%, #000 25%, transparent 78%);
  pointer-events: none;
}

/* 極光浮游光球 */
.bg-aurora {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
}
.bg-aurora i {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  animation: aurora-drift 20s ease-in-out infinite alternate;
  will-change: transform;
}
.bg-aurora i:nth-child(1) {
  width: 520px; height: 520px;
  background: rgba(61, 123, 255, 0.32);
  top: -140px; left: 6%;
}
.bg-aurora i:nth-child(2) {
  width: 460px; height: 460px;
  background: rgba(0, 208, 255, 0.26);
  top: 22%; right: -120px;
  animation-delay: -7s; animation-duration: 26s;
}
.bg-aurora i:nth-child(3) {
  width: 560px; height: 560px;
  background: rgba(123, 92, 255, 0.28);
  bottom: -160px; left: 28%;
  animation-delay: -13s; animation-duration: 32s;
}
@keyframes aurora-drift {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(64px, -44px) scale(1.14); }
}

/* 星點 */
.bg-stars {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 12% 22%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(1px 1px at 24% 68%, rgba(255, 255, 255, 0.45), transparent),
    radial-gradient(1.5px 1.5px at 33% 12%, rgba(190, 220, 255, 0.8), transparent),
    radial-gradient(1px 1px at 44% 42%, rgba(255, 255, 255, 0.5), transparent),
    radial-gradient(1px 1px at 55% 78%, rgba(190, 220, 255, 0.6), transparent),
    radial-gradient(1.5px 1.5px at 63% 30%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(1px 1px at 72% 60%, rgba(255, 255, 255, 0.4), transparent),
    radial-gradient(1px 1px at 81% 16%, rgba(190, 220, 255, 0.75), transparent),
    radial-gradient(1.5px 1.5px at 90% 48%, rgba(255, 255, 255, 0.55), transparent),
    radial-gradient(1px 1px at 8% 88%, rgba(255, 255, 255, 0.4), transparent),
    radial-gradient(1px 1px at 94% 82%, rgba(190, 220, 255, 0.5), transparent),
    radial-gradient(1px 1px at 50% 8%, rgba(255, 255, 255, 0.45), transparent);
  animation: star-twinkle 5s ease-in-out infinite alternate;
}
@keyframes star-twinkle {
  0% { opacity: 0.65; }
  100% { opacity: 1; }
}

.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(700px 500px at 15% 10%, rgba(61, 123, 255, 0.16), transparent 70%),
    radial-gradient(800px 600px at 85% 25%, rgba(0, 208, 255, 0.12), transparent 70%),
    radial-gradient(700px 600px at 50% 95%, rgba(123, 92, 255, 0.10), transparent 70%);
  pointer-events: none;
}

/* 科技動感粒子線條畫布 */
.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

/* ============================================================
   導航
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 32px;
  background: rgba(11, 21, 38, 0.72);
  backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid rgba(110, 160, 255, 0.08);
}
.nav::after {
  content: "";
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 1px;
  background: var(--grad-line);
  opacity: 0.7;
  pointer-events: none;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-main);
}
.nav-logo img {
  height: 40px;
  width: auto;
  border-radius: 8px;
  box-shadow: 0 0 22px rgba(61, 123, 255, 0.35);
}
.nav-logo .brand {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.5px;
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 14px rgba(0, 208, 255, 0.35));
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}
.nav-links a {
  color: var(--text-sub);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 10px;
  transition: all 0.2s;
}
.nav-links a:hover { color: #fff; background: var(--bg-card-hover); box-shadow: inset 0 0 18px rgba(61, 123, 255, 0.08); }
.nav-links a.active {
  color: var(--primary-2);
  text-shadow: 0 0 14px rgba(0, 208, 255, 0.45);
}
/* 下拉選單 */
.nav-item { position: relative; }
.nav-item > a { display: block; }
.nav-item .caret { font-size: 10px; margin-left: 5px; opacity: 0.75; transition: transform 0.2s; }
.nav-item:hover .caret, .nav-item.open .caret { transform: rotate(180deg); }
.dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 196px;
  background: rgba(15, 26, 46, 0.96);
  backdrop-filter: blur(18px) saturate(160%);
  border: 1px solid rgba(110, 160, 255, 0.18);
  border-radius: 12px;
  padding: 8px;
  box-shadow: 0 20px 55px rgba(0, 0, 0, 0.55);
  display: none;
  flex-direction: column;
  gap: 2px;
  z-index: 120;
}
.nav-item:hover .dropdown, .nav-item.open .dropdown { display: flex; }
.dropdown a {
  display: block;
  padding: 10px 14px;
  border-radius: 8px;
  color: var(--text-sub);
  font-size: 13.5px;
  font-weight: 600;
  white-space: nowrap;
  text-decoration: none;
}
.dropdown a:hover { background: rgba(61, 123, 255, 0.14); color: #fff; box-shadow: none; }
.dropdown a.active { color: var(--primary-2); text-shadow: 0 0 14px rgba(0, 208, 255, 0.45); }
.nav-right { display: flex; align-items: center; gap: 10px; }
.lang-select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 6px 28px 6px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  outline: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2398abd4' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  transition: all 0.2s;
}
.lang-select:hover { background-color: var(--bg-card-hover); border-color: rgba(0, 208, 255, 0.4); }
.lang-select:focus { border-color: rgba(0, 208, 255, 0.5); box-shadow: 0 0 0 3px rgba(0, 208, 255, 0.15); }
.lang-select option { background: #0b1526; color: #eef3ff; }
.cta-btn {
  display: inline-block;
  background: var(--grad-cta);
  color: #fff;
  font-weight: 700;
  padding: 10px 22px;
  border-radius: 12px;
  text-decoration: none;
  font-size: 14px;
  box-shadow: 0 8px 28px rgba(255, 154, 60, 0.35);
  transition: transform 0.2s, box-shadow 0.2s;
  border: none;
  cursor: pointer;
  animation: cta-pulse 2.6s ease-in-out infinite;
}
.cta-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(255, 154, 60, 0.55); }
@keyframes cta-pulse {
  0%, 100% { box-shadow: 0 8px 28px rgba(255, 154, 60, 0.35); }
  50% { box-shadow: 0 8px 42px rgba(255, 154, 60, 0.6); }
}

/* 手機選單 */
.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  font-size: 20px;
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
}

/* ============================================================
   主視覺 Hero
   ============================================================ */
.hero {
  position: relative;
  padding: 80px 32px 64px;
  text-align: center;
  overflow: hidden;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(61, 123, 255, 0.08);
  border: 1px solid rgba(0, 208, 255, 0.28);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 13px;
  color: var(--primary-2);
  margin-bottom: 20px;
  backdrop-filter: blur(8px);
  box-shadow: inset 0 0 24px rgba(0, 208, 255, 0.08);
  text-shadow: 0 0 12px rgba(0, 208, 255, 0.3);
}
.hero h1 {
  font-size: 52px;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 16px;
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 26px rgba(61, 123, 255, 0.30));
}
.hero .sub {
  font-size: 18px;
  color: var(--text-sub);
  max-width: 720px;
  margin: 0 auto 28px;
}
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.ghost-btn {
  display: inline-block;
  background: rgba(90, 140, 255, 0.06);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 10px 22px;
  border-radius: 12px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  backdrop-filter: blur(10px);
  transition: all 0.2s;
}
.ghost-btn:hover { background: var(--bg-card-hover); border-color: var(--primary); box-shadow: var(--glow-primary); }
.hero-stats {
  display: flex;
  gap: 40px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 48px;
}
.stat { text-align: center; }
.stat .num {
  font-size: 34px;
  font-weight: 900;
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 16px rgba(0, 208, 255, 0.30));
}
.stat .lbl { font-size: 13px; color: var(--text-dim); }

/* ============================================================
   區段
   ============================================================ */
.section { padding: 56px 32px; max-width: var(--maxw); margin: 0 auto; }
.section-head { text-align: center; margin-bottom: 36px; }
.section-head .eyebrow {
  color: var(--primary-2);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  text-shadow: 0 0 14px rgba(0, 208, 255, 0.35);
}
.section-head h2 { font-size: 32px; font-weight: 800; margin-top: 6px; position: relative; display: inline-block; }
.section-head h2::after {
  content: "";
  display: block;
  width: 60%;
  height: 2px;
  margin: 10px auto 0;
  background: var(--grad-main);
  border-radius: 2px;
  box-shadow: var(--glow-cyan);
}
.section-head p { color: var(--text-sub); margin-top: 8px; max-width: 640px; margin-left: auto; margin-right: auto; }

/* ============================================================
   區域卡片內地圖背景（北美卡，下半部漸層遮罩讓文字清晰）
   ============================================================ */
.card.map-card {
  padding: 0;
  min-height: 280px;
  display: flex;
  align-items: flex-end;
}
.map-card .map-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.map-card .map-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(11, 21, 38, 0.05) 0%,
    rgba(11, 21, 38, 0.25) 35%,
    rgba(11, 21, 38, 0.78) 70%,
    rgba(11, 21, 38, 0.96) 100%
  );
}
.map-card .map-body {
  position: relative;
  z-index: 2;
  padding: 20px 22px 22px;
  width: 100%;
}
.map-card .map-body .icon { font-size: 26px; }
.map-card .map-body h3 {
  font-size: 20px;
  margin: 8px 0 6px;
  color: var(--text-main);
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.6);
}
.map-card .map-body p {
  color: var(--text-sub);
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.55);
}

/* ============================================================
   卡片格網（漸變邊框＋霓虹光暈）
   ============================================================ */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.card {
  position: relative;
  background: linear-gradient(160deg, rgba(22, 35, 61, 0.72), rgba(16, 28, 51, 0.55));
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 26px;
  backdrop-filter: blur(12px);
  transition: transform 0.25s, background 0.25s, box-shadow 0.25s;
  text-decoration: none;
  color: var(--text-main);
  display: block;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--grad-main);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
.card:hover {
  transform: translateY(-6px);
  background: rgba(22, 35, 61, 0.85);
  box-shadow: var(--glow-primary), 0 24px 60px rgba(0, 0, 0, 0.45);
}
.card:hover::before { opacity: 0.75; }
.card .icon { font-size: 34px; margin-bottom: 12px; display: block; }
.card h3 { font-size: 18px; font-weight: 800; margin-bottom: 6px; }
.card p { color: var(--text-sub); font-size: 14px; }
.card .tag {
  display: inline-block;
  margin-top: 12px;
  font-size: 12px;
  color: var(--primary-2);
  font-weight: 700;
  text-shadow: 0 0 10px rgba(0, 208, 255, 0.3);
}
.card.orange::before { background: var(--grad-cta); }
.card.orange:hover { box-shadow: 0 0 26px rgba(255, 154, 60, 0.4), 0 24px 60px rgba(0, 0, 0, 0.45); }

/* ============================================================
   全寬卡（四大板塊）
   ============================================================ */
.pillar-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.pillar {
  position: relative;
  background: linear-gradient(160deg, rgba(22, 35, 61, 0.72), rgba(16, 28, 51, 0.55));
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 30px;
  overflow: hidden;
  backdrop-filter: blur(12px);
  transition: transform 0.25s, background 0.25s, box-shadow 0.25s;
  text-decoration: none;
  color: var(--text-main);
}
.pillar:hover { transform: translateY(-5px); background: rgba(22, 35, 61, 0.85); box-shadow: var(--glow-primary), 0 24px 60px rgba(0, 0, 0, 0.45); }
.pillar::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad-main);
  opacity: 0.85;
  box-shadow: 0 0 18px rgba(0, 208, 255, 0.5);
}
.pillar.orange::before { background: var(--grad-cta); box-shadow: 0 0 18px rgba(255, 154, 60, 0.5); }
.pillar .p-icon { font-size: 38px; display: block; margin-bottom: 12px; }
.pillar h3 { font-size: 20px; font-weight: 800; }
.pillar .p-sub { color: var(--primary-2); font-size: 13px; font-weight: 600; margin: 4px 0 10px; text-shadow: 0 0 10px rgba(0, 208, 255, 0.25); }
.pillar p { color: var(--text-sub); font-size: 14px; }
.pillar .more { margin-top: 14px; color: var(--accent-2); font-weight: 700; font-size: 13px; }

/* ============================================================
   表格
   ============================================================ */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border-glass); background: rgba(16, 28, 51, 0.4); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border-glass); }
th { background: rgba(61, 123, 255, 0.14); color: var(--primary-2); font-weight: 700; white-space: nowrap; }
tr:last-child td { border-bottom: none; }
td { color: var(--text-sub); }
tr:hover td { background: rgba(90, 140, 255, 0.05); }

/* ============================================================
   步驟流程
   ============================================================ */
.flow { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; counter-reset: flow; }
.flow-step {
  position: relative;
  background: linear-gradient(160deg, rgba(22, 35, 61, 0.66), rgba(16, 28, 51, 0.5));
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 22px 20px 18px;
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}
.flow-step:hover { transform: translateY(-4px); box-shadow: var(--glow-cyan); }
.flow-step::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad-main);
  opacity: 0.75;
}
.flow-step .n {
  font-size: 28px;
  font-weight: 900;
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: block;
  margin-bottom: 6px;
}
.flow-step p { font-size: 14px; color: var(--text-sub); }

/* ============================================================
   頁面內文
   ============================================================ */
.page { max-width: var(--maxw); margin: 0 auto; padding: 48px 32px; }
.page h1 {
  font-size: 36px; font-weight: 900; margin-bottom: 8px;
  background: var(--grad-main);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 22px rgba(61, 123, 255, 0.28));
}
.page .breadcrumb { color: var(--text-dim); font-size: 13px; margin-bottom: 24px; }
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 18px;
  color: var(--primary-2);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  padding: 8px 14px;
  border: 1px solid var(--border-glass);
  border-radius: 10px;
  background: rgba(90, 140, 255, 0.06);
  backdrop-filter: blur(8px);
  transition: all 0.2s;
}
.back-btn:hover {
  color: #fff;
  border-color: var(--primary);
  box-shadow: var(--glow-primary);
  transform: translateX(-3px);
}
.page .lead { color: var(--text-sub); font-size: 16px; max-width: 780px; margin-bottom: 32px; }
.page h2 { font-size: 24px; font-weight: 800; margin: 36px 0 14px; color: var(--text-main); }
.page h2::before { content: "▍"; background: var(--grad-main); -webkit-background-clip: text; background-clip: text; color: transparent; margin-right: 6px; }
.page h3 { font-size: 18px; font-weight: 700; margin: 20px 0 8px; color: var(--primary-2); }
.page ul, .page ol { padding-left: 22px; color: var(--text-sub); margin-bottom: 16px; }
.page li { margin-bottom: 6px; }

/* ============================================================
   特色清單
   ============================================================ */
.feature-list { list-style: none; padding: 0 !important; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.feature-list li {
  position: relative;
  background: linear-gradient(160deg, rgba(22, 35, 61, 0.6), rgba(16, 28, 51, 0.45));
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  padding: 16px 18px;
  color: var(--text-sub);
  font-size: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.feature-list li:hover { border-color: rgba(0, 208, 255, 0.4); box-shadow: inset 0 0 20px rgba(61, 123, 255, 0.06); }
.feature-list li strong { color: var(--text-main); display: block; margin-bottom: 4px; font-size: 15px; }
.feature-list li::before { content: none; }

/* ============================================================
   表單
   ============================================================ */
.form-card {
  background: linear-gradient(160deg, rgba(22, 35, 61, 0.75), rgba(16, 28, 51, 0.6));
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 30px;
  max-width: 560px;
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}
.form-card label { font-size: 14px; font-weight: 600; color: var(--text-sub); display: block; margin: 14px 0 6px; }
.form-card input, .form-card textarea, .form-card select {
  width: 100%;
  background: rgba(16, 28, 51, 0.6);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-card input:focus, .form-card textarea:focus, .form-card select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(61, 123, 255, 0.18), var(--glow-cyan);
}
.form-card textarea { min-height: 110px; resize: vertical; }

/* ============================================================
   AI 客服浮窗
   ============================================================ */
.chat-fab {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 200;
  height: 54px;
  padding: 0 22px 0 18px;
  border-radius: 999px;
  background: var(--grad-main);
  border: none;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  box-shadow: 0 8px 32px rgba(61, 123, 255, 0.55);
  transition: transform 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.chat-fab .chat-fab-icon { width: 26px; height: 26px; flex-shrink: 0; }
.chat-fab .chat-fab-label { white-space: nowrap; }
.chat-fab:hover { transform: scale(1.05); box-shadow: 0 8px 40px rgba(0, 208, 255, 0.7); }
.chat-panel {
  position: fixed;
  right: 26px;
  bottom: 100px;
  z-index: 200;
  width: 360px;
  max-width: calc(100vw - 32px);
  height: 480px;
  max-height: calc(100vh - 140px);
  background: rgba(16, 28, 51, 0.94);
  border: 1px solid rgba(110, 160, 255, 0.2);
  border-radius: 20px;
  backdrop-filter: blur(22px) saturate(160%);
  box-shadow: var(--shadow);
  display: none;
  flex-direction: column;
  overflow: hidden;
}
.chat-panel.open { display: flex; }
.chat-head {
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-glass);
  background: linear-gradient(120deg, rgba(61, 123, 255, 0.20), rgba(0, 208, 255, 0.12));
  display: flex;
  align-items: center;
  gap: 10px;
}
.chat-head .avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--grad-main);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 14px rgba(0, 208, 255, 0.45);
}
.chat-head .avatar svg { width: 22px; height: 22px; color: #fff; }
.chat-head .title { font-weight: 800; font-size: 15px; }
.chat-head .status { font-size: 12px; color: var(--primary-2); }
.chat-head .close { margin-left: auto; background: none; border: none; color: var(--text-sub); font-size: 18px; cursor: pointer; }
.chat-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.chat-msg {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.5;
  white-space: pre-wrap;
}
.chat-msg.bot {
  background: linear-gradient(160deg, rgba(22, 35, 61, 0.8), rgba(16, 28, 51, 0.7));
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}
.chat-msg.user {
  background: var(--grad-main);
  color: #fff;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
  box-shadow: var(--glow-primary);
}
.chat-actions { padding: 10px 14px; display: flex; gap: 8px; flex-wrap: wrap; }
.chat-actions button {
  background: rgba(90, 140, 255, 0.06);
  border: 1px solid var(--border-glass);
  color: var(--text-sub);
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s;
}
.chat-actions button:hover { color: var(--primary-2); border-color: var(--primary); box-shadow: var(--glow-cyan); }
.chat-input {
  display: flex;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--border-glass);
}
.chat-input input {
  flex: 1;
  background: rgba(16, 28, 51, 0.6);
  border: 1px solid var(--border-glass);
  border-radius: 10px;
  color: var(--text-main);
  padding: 10px 14px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}
.chat-input input:focus { border-color: var(--primary); box-shadow: var(--glow-cyan); }
.chat-input button {
  background: var(--grad-main);
  border: none;
  color: #fff;
  padding: 0 16px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 700;
  transition: box-shadow 0.2s;
}
.chat-input button:hover { box-shadow: var(--glow-primary); }

/* ============================================================
   頁腳
   ============================================================ */
.footer {
  margin-top: 40px;
  padding: 36px 32px 28px;
  border-top: 1px solid transparent;
  position: relative;
  background: rgba(11, 21, 38, 0.82);
  backdrop-filter: blur(14px);
}
.footer::before {
  content: "";
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 1px;
  background: var(--grad-line);
  opacity: 0.6;
}
.footer-inner { max-width: var(--maxw); margin: 0 auto; display: flex; flex-wrap: wrap; gap: 28px; justify-content: space-between; align-items: flex-start; }
.footer .col h4 { font-size: 14px; color: var(--text-main); margin-bottom: 10px; }
.footer .col a { display: block; color: var(--text-sub); text-decoration: none; font-size: 13px; padding: 3px 0; transition: color 0.2s, text-shadow 0.2s; }
.footer .col a:hover { color: var(--primary-2); text-shadow: 0 0 10px rgba(0, 208, 255, 0.3); }
.footer .copy { max-width: var(--maxw); margin: 24px auto 0; border-top: 1px solid var(--border-glass); padding-top: 18px; color: var(--text-dim); font-size: 12px; text-align: center; }

/* ============================================================
   滾動條（科技感）
   ============================================================ */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: #101c33; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #3d7bff, #00d0ff, #7b5cff);
  border-radius: 6px;
}

/* ============================================================
   響應式
   ============================================================ */
@media (max-width: 900px) {
  .pillar-grid { grid-template-columns: 1fr; }
  .nav { padding: 10px 14px; gap: 8px; }
  .nav-logo img { height: 34px; }
  .nav-logo .brand { font-size: 15px; }
  .nav-right .cta-btn { display: none; }
  .lang-select { padding: 6px 24px 6px 10px; font-size: 12px; }
  .nav-links { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: rgba(11, 21, 38, 0.97); padding: 16px; border-bottom: 1px solid var(--border-glass); }
  .nav-links.open { display: flex; }
  .menu-toggle { display: block; }
  .nav-item { width: 100%; }
  .nav-item .dropdown { position: static; width: 100%; box-shadow: none; border: none; border-left: 2px solid rgba(0, 208, 255, 0.25); border-radius: 0; margin: 2px 0 4px 10px; padding: 2px 0 2px 8px; background: transparent; }
  .nav-item.open .dropdown { display: flex; }
  .hero h1 { font-size: 34px; }
  .hero { padding: 48px 20px 40px; }
  .section { padding: 40px 20px; }
  .page { padding: 32px 20px; }
  .chat-fab { height: 48px; padding: 0 16px 0 13px; font-size: 14px; gap: 6px; right: 16px; bottom: 16px; }
  .chat-fab .chat-fab-icon { width: 22px; height: 22px; }
  .chat-panel { right: 16px; bottom: 82px; width: calc(100vw - 32px); height: 420px; }
}

/* ============================================================
   動效偏好：減弱動畫
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .bg-aurora i, .cta-btn, .bg-stars { animation: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   工具類
   ============================================================ */
.center { text-align: center; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
.hidden { display: none; }
.badge {
  display: inline-block;
  background: rgba(61, 123, 255, 0.14);
  border: 1px solid rgba(0, 208, 255, 0.35);
  color: var(--primary-2);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  box-shadow: inset 0 0 18px rgba(0, 208, 255, 0.10);
}
.text-gradient {
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}