/* ============================================================
   PrivaZer 繁體中文站 · 全域性樣式 common.css
   主題色：#2B69BA（藍） / #960B00（紅）  深色主題
   ============================================================ */

/* ---------- 設計變數 ---------- */
:root {
  --pz-blue: #2B69BA;
  --pz-blue-light: #5B9BEB;
  --pz-blue-soft: rgba(43, 105, 186, 0.16);
  --pz-red: #960B00;
  --pz-red-bright: #E23A28;
  --pz-red-soft: rgba(150, 11, 0, 0.22);

  --bg: #060A12;
  --bg-2: #0A1120;
  --surface: #0D1524;
  --surface-2: #111B2E;
  --line: rgba(148, 178, 226, 0.12);
  --line-strong: rgba(148, 178, 226, 0.22);

  --text: #EAF1FB;
  --text-2: #9DB0CA;
  --text-3: #66779A;

  --font: "Segoe UI", system-ui, -apple-system, "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --header-h: 72px;
  --radius: 10px;
  --radius-lg: 16px;
  --container: 1200px;
}

/* ---------- 基礎 Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--pz-blue-light); text-decoration: none; transition: color .25s ease; }
a:hover { color: #8FBDF5; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

::selection { background: rgba(43, 105, 186, 0.45); color: #fff; }

/* ---------- 佈局工具 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

.section { padding: 96px 0; position: relative; }
.section--tight { padding: 72px 0; }

.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--pz-blue-light);
  margin-bottom: 18px;
}
.kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: linear-gradient(90deg, var(--pz-blue), var(--pz-red-bright));
}
.section-head--center .kicker::before { display: none; }

.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.section-sub {
  margin-top: 16px;
  font-size: 17px;
  color: var(--text-2);
}

/* ---------- 按鈕 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 26px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: transform .25s ease, box-shadow .25s ease,
              background .25s ease, border-color .25s ease, color .25s ease;
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; flex: none; }

/* 立即購買 —— 強調按鈕 */
.btn-buy {
  color: #fff;
  background: linear-gradient(135deg, #C82E17 0%, var(--pz-red) 100%);
  box-shadow: 0 10px 26px rgba(150, 11, 0, 0.42),
              inset 0 1px 0 rgba(255, 255, 255, 0.16);
}
.btn-buy:hover {
  color: #fff;
  transform: translateY(-2px);
  background: linear-gradient(135deg, #DE3A1F 0%, #A80E02 100%);
  box-shadow: 0 14px 32px rgba(150, 11, 0, 0.55),
              inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

/* 下載試用 —— 弱化按鈕 */
.btn-ghost {
  color: var(--text-2);
  background: rgba(148, 178, 226, 0.05);
  border-color: var(--line);
}
.btn-ghost:hover {
  color: var(--text);
  border-color: var(--pz-blue);
  background: var(--pz-blue-soft);
  transform: translateY(-2px);
}

/* ---------- 滾動漸顯（不閃爍、無呼吸感） ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.22, .8, .32, 1);
}
[data-reveal].is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   導航欄 header / nav 樣式
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(6, 10, 18, 0.72);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease;
}
.site-header.is-scrolled {
  background: rgba(6, 10, 18, 0.92);
  border-bottom-color: var(--line);
}

.nav-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 28px;
}

/* 品牌 */
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none;
  color: var(--text);
}
.nav-brand img { width: 38px; height: 38px; border-radius: 8px; }
.nav-brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.nav-brand-name {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text);
}
.nav-brand-name em { font-style: normal; color: var(--pz-red-bright); }
.nav-brand-sub { font-size: 11.5px; color: var(--text-3); letter-spacing: 0.04em; }

/* 桌面選單 */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.nav-menu > li { position: relative; }
.nav-menu a.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 9px 13px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-2);
  border-radius: 8px;
  transition: color .2s ease, background .2s ease;
}
.nav-menu a.nav-link:hover { color: var(--text); background: rgba(148, 178, 226, 0.08); }
.nav-menu a.nav-link.is-active { color: var(--text); }
.nav-menu a.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 13px; right: 13px; bottom: 2px;
  height: 2px;
  background: linear-gradient(90deg, var(--pz-blue-light), var(--pz-red-bright));
  border-radius: 2px;
}

/* 下拉 */
.nav-caret { width: 12px; height: 12px; transition: transform .25s ease; }
.nav-item--drop .nav-drop {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 220px;
  padding: 8px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .22s ease, transform .22s ease, visibility .22s;
}
.nav-item--drop:hover .nav-drop,
.nav-item--drop.is-open .nav-drop {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.nav-item--drop:hover .nav-caret,
.nav-item--drop.is-open .nav-caret { transform: rotate(180deg); }
.nav-drop a {
  display: flex;
  align-items: center;
  padding: 10px 13px;
  font-size: 14px;
  color: var(--text-2);
  border-radius: 7px;
  transition: color .2s, background .2s;
}
.nav-drop a:hover { color: var(--text); background: rgba(148, 178, 226, 0.08); }
.nav-drop a.is-active { color: var(--pz-blue-light); }

/* 語言切換 */
.nav-lang { position: relative; flex: none; }
a.nav-lang-cur {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 11px;
  font-size: 13.5px;
  color: var(--text-2);
  border: 1px solid var(--line);
  border-radius: 9px;
  transition: color .2s ease, border-color .2s ease;
}
a.nav-lang-cur:hover { color: var(--text); border-color: rgba(91, 155, 235, 0.42); }
a.nav-lang-cur svg { width: 15px; height: 15px; flex: none; }
a.nav-lang-cur .nav-caret { width: 11px; height: 11px; }
.nav-lang-tag { font-size: 12.5px; font-weight: 600; line-height: 1; }
.nav-drop--lang { left: auto; right: 0; min-width: 196px; }
.nav-drop--lang a { justify-content: space-between; gap: 16px; }
.nav-drop--lang a .lc {
  flex: none;
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--text-3);
}
.nav-drop--lang a.is-here { color: var(--pz-blue-light); }
.nav-drop--lang a.is-here .lc { color: var(--pz-blue-light); }
.nav-drop--lang a.is-here .lc::after { content: " ✓"; }

/* 移動端語言切換 */
.mnav-langs { margin: 20px 0 16px; }
.mnav-langs-label {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 11px;
}
.mnav-langs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.mnav-langs-grid a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 11px 4px 10px;
  font-size: 10.5px;
  color: var(--text-3);
  border: 1px solid var(--line);
  border-radius: 9px;
  transition: border-color .2s ease, background .2s ease;
}
.mnav-langs-grid a b {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}
.mnav-langs-grid a:hover { border-color: rgba(91, 155, 235, 0.4); }
.mnav-langs-grid a.is-here {
  border-color: rgba(91, 155, 235, 0.55);
  background: rgba(43, 105, 186, 0.12);
}
.mnav-langs-grid a.is-here b { color: var(--pz-blue-light); }

/* 頭部 CTA 按鈕 */
.nav-actions { display: flex; align-items: center; gap: 10px; flex: none; }
.nav-actions .btn { padding: 10px 18px; font-size: 14px; }

/* 漢堡按鈕 */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  border-radius: 9px;
  border: 1px solid var(--line);
  position: relative;
  transition: border-color .25s ease, background .25s ease;
}
.nav-toggle:hover { border-color: var(--pz-blue); background: var(--pz-blue-soft); }
.nav-toggle span {
  position: absolute;
  left: 12px;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform .3s cubic-bezier(.22, .8, .32, 1), opacity .2s ease, top .3s ease;
}
.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }
.nav-toggle.is-open span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; transform: translateX(-6px); }
.nav-toggle.is-open span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* ---------- 移動端彈出選單 ---------- */
.mnav {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  z-index: 999;
  visibility: hidden;
  pointer-events: none;
}
.mnav.is-open { visibility: visible; pointer-events: auto; }

.mnav-mask {
  position: absolute;
  inset: 0;
  background: rgba(3, 6, 11, 0.6);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity .35s ease;
}
.mnav.is-open .mnav-mask { opacity: 1; }

.mnav-panel {
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: min(360px, 88vw);
  background:
    radial-gradient(120% 50% at 100% 0%, rgba(43, 105, 186, 0.14) 0%, transparent 60%),
    radial-gradient(120% 40% at 100% 100%, rgba(150, 11, 0, 0.16) 0%, transparent 55%),
    var(--bg-2);
  border-left: 1px solid var(--line);
  transform: translateX(100%);
  transition: transform .42s cubic-bezier(.22, .8, .32, 1);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.mnav.is-open .mnav-panel { transform: none; }

.mnav-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 24px 14px;
}
.mnav-head-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--text-3);
  text-transform: uppercase;
}
.mnav-head-line {
  flex: 1;
  height: 1px;
  margin-left: 16px;
  background: linear-gradient(90deg, var(--line-strong), transparent);
}

.mnav-list { padding: 18px 24px 8px; }
.mnav-item {
  opacity: 0;
  transform: translateX(26px);
  transition: opacity .4s ease, transform .45s cubic-bezier(.22, .8, .32, 1);
}
.mnav.is-open .mnav-item { opacity: 1; transform: none; }
.mnav.is-open .mnav-item:nth-child(1) { transition-delay: .08s; }
.mnav.is-open .mnav-item:nth-child(2) { transition-delay: .13s; }
.mnav.is-open .mnav-item:nth-child(3) { transition-delay: .18s; }
.mnav.is-open .mnav-item:nth-child(4) { transition-delay: .23s; }
.mnav.is-open .mnav-item:nth-child(5) { transition-delay: .28s; }
.mnav.is-open .mnav-item:nth-child(6) { transition-delay: .33s; }
.mnav.is-open .mnav-item:nth-child(7) { transition-delay: .38s; }
.mnav.is-open .mnav-item:nth-child(8) { transition-delay: .43s; }

.mnav-link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 13px 4px;
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid rgba(148, 178, 226, 0.07);
}
.mnav-link .idx {
  font-size: 12px;
  font-weight: 600;
  color: var(--pz-blue-light);
  font-variant-numeric: tabular-nums;
  letter-spacing: .05em;
}
.mnav-link:hover { color: var(--pz-blue-light); }
.mnav-link.is-active .idx { color: var(--pz-red-bright); }
.mnav-link .sub-arrow { margin-left: auto; width: 14px; height: 14px; color: var(--text-3); transition: transform .3s ease; }
.mnav-item.is-open .sub-arrow { transform: rotate(180deg); }

/* 移動端子選單（手風琴） */
.mnav-sub {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s cubic-bezier(.22, .8, .32, 1);
}
.mnav-item.is-open .mnav-sub { max-height: 320px; }
.mnav-sub a {
  display: block;
  padding: 10px 4px 10px 38px;
  font-size: 15px;
  color: var(--text-2);
}
.mnav-sub a:hover { color: var(--pz-blue-light); }

.mnav-foot {
  margin-top: auto;
  padding: 22px 24px 30px;
  display: grid;
  gap: 12px;
  border-top: 1px solid var(--line);
}
.mnav-foot .btn { width: 100%; padding: 14px; font-size: 15px; }
.mnav-note {
  text-align: center;
  font-size: 12px;
  color: var(--text-3);
}

/* ============================================================
   頁尾 footer 樣式
   ============================================================ */
.site-footer {
  position: relative;
  background:
    radial-gradient(80% 120% at 8% 0%, rgba(43, 105, 186, 0.10) 0%, transparent 55%),
    var(--bg-2);
  border-top: 1px solid var(--line);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--pz-blue) 35%, var(--pz-red-bright) 70%, transparent);
  opacity: .8;
}

.site-footer { overflow: hidden; }
.site-footer::after {
  content: "PrivaZer";
  position: absolute;
  right: -1.5%;
  bottom: -7%;
  font-size: clamp(110px, 17vw, 230px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(140, 175, 225, 0.07);
  pointer-events: none;
  user-select: none;
}
.site-footer .container { position: relative; z-index: 1; }

.footer-main {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  padding: 72px 0 52px;
  align-items: start;
}

/* 右側雙卡片 */
.footer-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-content: start;
}
.footer-card {
  position: relative;
  padding: 26px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color .3s ease, transform .3s ease;
}
.footer-card:hover { border-color: rgba(91, 155, 235, 0.32); transform: translateY(-3px); }
.footer-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--pz-blue-light), transparent 70%);
}
.footer-card--auth::before {
  background: linear-gradient(90deg, var(--pz-red-bright), transparent 70%);
}
.footer-card .footer-col-title {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 18px;
}
.footer-card .footer-col-title::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  background: linear-gradient(135deg, var(--pz-blue-light), var(--pz-red-bright));
}
.footer-card .footer-contact li { margin-bottom: 12px; }
.footer-card .footer-contact li:last-child { margin-bottom: 0; }

.footer-brand-top { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.footer-brand-top img { width: 44px; height: 44px; border-radius: 10px; flex: none; }
.footer-brand-name { font-size: 20px; font-weight: 700; line-height: 1.2; }
.footer-brand-name em { font-style: normal; color: var(--pz-red-bright); }
.footer-brand-sub { font-size: 12.5px; color: var(--text-3); margin-top: 3px; letter-spacing: .04em; }
.footer-desc {
  margin-top: 16px;
  font-size: 14px;
  color: var(--text-2);
  max-width: 380px;
}
.footer-badge {
  margin-top: 22px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--pz-blue-light);
  padding: 7px 12px;
  border: 1px solid rgba(91, 155, 235, 0.3);
  border-radius: 8px;
  background: rgba(43, 105, 186, 0.08);
}
.footer-badge svg { width: 14px; height: 14px; }

.footer-col-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--text-3);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.footer-contact li { margin-bottom: 14px; }
.footer-contact a, .footer-contact span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  color: var(--text-2);
}
.footer-contact a:hover { color: var(--text); }
.footer-contact svg { width: 16px; height: 16px; color: var(--pz-blue-light); flex: none; }

.footer-hours { font-size: 13px; color: var(--text-3); margin-top: 6px; }

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 24px 0 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  align-items: center;
  justify-content: space-between;
}
.footer-copy { font-size: 13px; color: var(--text-3); }
.footer-reseller {
  font-size: 12.5px;
  color: var(--text-3);
  max-width: 560px;
  line-height: 1.7;
}
.footer-reseller b { color: var(--text-2); font-weight: 600; }

/* ============================================================
   子頁面通用元件
   ============================================================ */

/* ---------- 子頁面頁頭 banner ---------- */
.page-hero {
  position: relative;
  padding: calc(var(--header-h) + 72px) 0 64px;
  overflow: hidden;
  background:
    radial-gradient(50% 80% at 88% 0%, rgba(43, 105, 186, 0.18) 0%, transparent 62%),
    radial-gradient(40% 60% at 5% 100%, rgba(150, 11, 0, 0.14) 0%, transparent 58%),
    linear-gradient(180deg, #070C15 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--line);
}
.page-hero .crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 20px;
}
.page-hero .crumbs a { color: var(--text-3); }
.page-hero .crumbs a:hover { color: var(--pz-blue-light); }
.page-hero .crumbs .sep { color: var(--pz-blue-light); }
.page-hero h1 {
  font-size: clamp(32px, 4.6vw, 50px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  max-width: 800px;
}
.page-hero h1 .grad {
  background: linear-gradient(100deg, #6FB0FF 0%, var(--pz-blue-light) 40%, #F0664F 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.page-hero .lead {
  margin-top: 18px;
  font-size: 17px;
  color: var(--text-2);
  max-width: 680px;
}
.page-hero .hero-cta { margin-top: 30px; display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 正文排版 prose ---------- */
.prose { color: var(--text-2); font-size: 15.5px; }
.prose > h2 {
  font-size: 26px;
  color: var(--text);
  margin: 56px 0 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.prose > h2:first-child { margin-top: 0; }
.prose > h3 { font-size: 19px; color: var(--text); margin: 34px 0 12px; }
.prose > p { margin: 14px 0; }
.prose b, .prose strong { color: var(--text); font-weight: 600; }
.prose ul, .prose ol { margin: 14px 0; display: grid; gap: 8px; }
.prose ul li { display: flex; gap: 10px; }
.prose ul li::before { content: ""; flex: none; width: 7px; height: 7px; margin-top: 10px; background: linear-gradient(135deg, var(--pz-blue-light), var(--pz-red-bright)); }
.prose ol { list-style: decimal; padding-left: 24px; }
.prose ol li::marker { color: var(--pz-blue-light); font-weight: 700; }
.prose a { text-decoration: underline; text-underline-offset: 3px; }
.prose img { border: 1px solid var(--line); border-radius: var(--radius); margin: 18px 0; }
.prose code {
  font-family: Consolas, "Courier New", monospace;
  font-size: .92em;
  background: rgba(91, 155, 235, 0.12);
  border: 1px solid rgba(91, 155, 235, 0.2);
  border-radius: 5px;
  padding: 2px 7px;
  color: #B9D4F5;
}
.prose blockquote {
  margin: 18px 0;
  padding: 4px 0 4px 18px;
  border-left: 2px solid var(--pz-blue);
  color: var(--text-3);
  font-style: italic;
}

/* ---------- 手風琴（全站複用） ---------- */
.acc-list { display: grid; gap: 14px; }
.acc {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color .3s ease;
}
.acc[open], .acc:hover { border-color: rgba(91, 155, 235, 0.32); }
.acc summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 26px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}
.acc summary::-webkit-details-marker { display: none; }
.acc summary .plus {
  margin-left: auto;
  flex: none;
  width: 30px; height: 30px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  position: relative;
  transition: border-color .25s, background .25s;
}
.acc summary .plus::before, .acc summary .plus::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  background: var(--text-2);
  transition: transform .3s ease, background .25s;
}
.acc summary .plus::before { width: 12px; height: 2px; transform: translate(-50%, -50%); }
.acc summary .plus::after { width: 2px; height: 12px; transform: translate(-50%, -50%); }
.acc[open] summary .plus { border-color: var(--pz-red-bright); background: rgba(226, 58, 40, 0.12); }
.acc[open] summary .plus::after { transform: translate(-50%, -50%) rotate(90deg); }
.acc summary .acc-idx {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--pz-blue-light);
  letter-spacing: .08em;
}
.acc-body { padding: 0 26px 26px; font-size: 14.5px; color: var(--text-2); }
.acc-body h4 { color: var(--text); font-size: 15.5px; margin: 18px 0 8px; }
.acc-body h4 .n { color: var(--pz-red-bright); margin-right: 8px; font-weight: 700; }
.acc-body p { margin: 8px 0; }
.acc-body ul { display: grid; gap: 6px; margin: 8px 0 4px; }
.acc-body ul li { display: flex; gap: 10px; }
.acc-body ul li::before { content: "›"; color: var(--pz-blue-light); font-weight: 700; }
.acc-body table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 13.5px; }
.acc-body th, .acc-body td { padding: 10px 12px; border: 1px solid var(--line); text-align: left; }
.acc-body th { background: rgba(43, 105, 186, 0.10); color: var(--text); font-weight: 600; }
.acc-body .acc-img {
  margin: 14px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
  max-width: 560px;
}
.acc-body .acc-img img { width: 100%; }
.acc-body a { text-decoration: underline; text-underline-offset: 3px; }
.acc-body .test-block {
  margin-top: 18px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
}
.acc-body .test-block h5 {
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}
.acc-body .test-block h5::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  background: linear-gradient(135deg, var(--pz-blue-light), var(--pz-red-bright));
}
.acc-body .test-block ol { list-style: decimal inside; display: grid; gap: 5px; }
.acc-body .test-block .tip { font-size: 13px; color: var(--text-3); margin-top: 10px; }
.acc-body .softlist { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 10px 0; }
.acc-body .softlist span { font-size: 13.5px; color: var(--text-3); }
.acc-body .softlist span::before { content: "· "; color: var(--pz-blue-light); }
.acc-tag {
  flex: none;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--pz-blue-light);
  border: 1px solid rgba(91, 155, 235, 0.35);
  background: rgba(43, 105, 186, 0.08);
  border-radius: 6px;
  padding: 4px 9px;
  margin-right: 2px;
  white-space: nowrap;
}

/* ---------- 通用卡片網格 ---------- */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }
.card-grid--4 { grid-template-columns: repeat(4, 1fr); }
.card {
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: transform .3s ease, border-color .3s ease, background .3s ease;
}
.card:hover { transform: translateY(-4px); border-color: rgba(91, 155, 235, 0.35); background: var(--surface-2); }
.card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--text-2); }
.card .card-ico {
  width: 42px; height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1px solid rgba(91, 155, 235, 0.35);
  background: rgba(43, 105, 186, 0.10);
  color: var(--pz-blue-light);
  margin-bottom: 16px;
}
.card .card-ico svg { width: 20px; height: 20px; }
.card ul { display: grid; gap: 7px; margin-top: 10px; font-size: 14px; color: var(--text-2); }
.card ul li { display: flex; gap: 10px; }
.card ul li::before { content: ""; flex: none; width: 6px; height: 6px; margin-top: 9px; background: var(--pz-blue-light); }

/* ---------- 通用 split 區塊 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.split-media .frame {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.5);
}
.split-media .frame img { width: 100%; }

/* ---------- CTA 通欄 ---------- */
.cta-band {
  position: relative;
  padding: 88px 0;
  text-align: center;
  background:
    radial-gradient(60% 100% at 50% 0%, rgba(43, 105, 186, 0.16) 0%, transparent 70%),
    var(--bg-2);
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--pz-blue-light), var(--pz-red-bright), transparent);
}
.cta-band h2 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; }
.cta-band p { margin: 16px auto 0; color: var(--text-2); max-width: 560px; }
.cta-band .hero-cta { justify-content: center; margin-top: 34px; }

/* ============================================================
   響應式
   ============================================================ */
@media (max-width: 1080px) {
  .nav-menu { display: none; }
  .nav-toggle { display: block; }
  .nav-actions .btn-ghost { display: none; }
  .card-grid, .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .section { padding: 68px 0; }
  .container { padding: 0 20px; }
  .nav-actions { display: none; }
  .footer-main { grid-template-columns: 1fr; gap: 36px; padding: 52px 0 36px; }
  .footer-cards { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .site-footer::after { font-size: 92px; bottom: -3%; }
  .page-hero { padding: calc(var(--header-h) + 52px) 0 46px; }
  .split { grid-template-columns: 1fr; gap: 36px; }
  .card-grid, .card-grid--2, .card-grid--4 { grid-template-columns: 1fr; }
  .acc summary { padding: 18px 20px; font-size: 15px; }
  .acc-body { padding: 0 20px 22px; }
  .prose > h2 { font-size: 22px; margin: 44px 0 16px; }
  .cta-band { padding: 64px 0; }
}