:root {
  --bg: #fafbfc;
  --bg-soft: #f3f5f8;
  --bg-dark: #0a0a0c;
  --bg-card: #ffffff;
  --text: #1c2733;
  --text-2: #5a6b7b;
  --text-3: #8a99a8;
  --line: #e6ebf0;
  --accent: #06d6a0;
  --accent-2: #00b8e0;
  --accent-3: #0e4a8a;
  --gold: #C9A961;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.65; font-size: 16px;
}
a { color: var(--accent-3); text-decoration: none; transition: color .15s; }
a:hover { color: var(--accent); }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* hero */
.hero {
  background: linear-gradient(135deg, #0a0a0c 0%, #121225 50%, #0e4a8a 100%);
  color: #fff; padding: 90px 0 80px;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0; opacity: .12;
  background: radial-gradient(circle at 20% 30%, var(--accent) 0%, transparent 30%),
              radial-gradient(circle at 80% 70%, var(--accent-2) 0%, transparent 30%);
}
.hero .wrap { position: relative; z-index: 2; }
.hero .kicker { color: var(--accent); font-size: 14px; letter-spacing: 3px; text-transform: uppercase; font-weight: 700; margin-bottom: 18px; }
.hero h1 { font-size: 56px; font-weight: 800; line-height: 1.15; margin-bottom: 26px; max-width: 920px; }
.hero h1 .acc { color: var(--accent); }
.hero h1 .acc2 { color: var(--accent-2); }
.hero p.lead { font-size: 20px; line-height: 1.6; color: rgba(255,255,255,0.85); max-width: 760px; margin-bottom: 32px; }
.hero .cta-row { display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 13px 26px; border-radius: 8px; font-weight: 700; font-size: 15px; transition: transform .15s, background .15s; cursor: pointer; }
.btn.primary { background: var(--accent); color: var(--bg-dark); }
.btn.primary:hover { background: #5dffc5; transform: translateY(-2px); }
.btn.ghost { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.4); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); }

/* section */
section { padding: 70px 0; }
section.alt { background: var(--bg-soft); }
section .section-kicker { color: var(--accent-3); font-size: 13px; letter-spacing: 3px; text-transform: uppercase; font-weight: 700; margin-bottom: 14px; }
section h2 { font-size: 38px; font-weight: 800; margin-bottom: 16px; }
section h2 .acc { color: var(--accent); }
section .section-lead { font-size: 18px; color: var(--text-2); max-width: 760px; margin-bottom: 42px; }

/* grid cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 22px; }
.card {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 14px;
  padding: 26px 24px; transition: transform .2s, box-shadow .2s, border-color .2s;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 16px 36px rgba(14,74,138,0.10); border-color: var(--accent); }
.card .icon { font-size: 32px; margin-bottom: 14px; }
.card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.card p { font-size: 14.5px; color: var(--text-2); line-height: 1.6; margin-bottom: 16px; }
.card .more { margin-top: auto; color: var(--accent-3); font-weight: 600; font-size: 14px; }
.card .more::after { content: " →"; transition: transform .15s; display: inline-block; }
.card:hover .more::after { transform: translateX(4px); }

/* table */
.t-box { background: #fff; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
table.compare { width: 100%; border-collapse: collapse; font-size: 15px; }
table.compare th, table.compare td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
table.compare th { background: var(--bg-soft); color: var(--text); font-weight: 700; font-size: 14px; }
table.compare tr:last-child td { border-bottom: none; }
table.compare .x { color: #c0392b; font-weight: 700; }
table.compare .v { color: var(--accent); font-weight: 700; }

/* prose page */
.prose h1 { font-size: 42px; font-weight: 800; margin: 30px 0 14px; }
.prose h2 { font-size: 28px; font-weight: 700; margin: 38px 0 14px; color: var(--accent-3); border-left: 4px solid var(--accent); padding-left: 12px; }
.prose h3 { font-size: 21px; font-weight: 700; margin: 26px 0 10px; }
.prose p { margin-bottom: 16px; color: var(--text); font-size: 16.5px; line-height: 1.75; }
.prose ul, .prose ol { margin: 0 0 18px 22px; }
.prose li { margin-bottom: 8px; }
.prose blockquote { border-left: 4px solid var(--gold); padding: 12px 20px; background: var(--bg-soft); margin: 22px 0; font-style: italic; color: var(--text-2); }
.prose strong { color: var(--accent-3); }
.prose .kicker { color: var(--accent); font-size: 13px; letter-spacing: 3px; text-transform: uppercase; font-weight: 700; }
.prose img { max-width: 100%; border-radius: 10px; margin: 18px 0; }

/* footer */
footer {
  background: var(--bg-dark); color: rgba(255,255,255,0.7);
  padding: 50px 0 32px; margin-top: 80px; font-size: 14px;
}
footer .f-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 36px; }
footer h4 { color: var(--accent); font-size: 13px; letter-spacing: 2px; text-transform: uppercase; font-weight: 700; margin-bottom: 14px; }
footer a { color: rgba(255,255,255,0.7); display: block; padding: 4px 0; }
footer a:hover { color: var(--accent); }
footer .bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 22px; text-align: center; color: rgba(255,255,255,0.5); font-size: 12.5px; line-height: 1.7; }

/* breadcrumb */
.crumb { background: var(--bg-soft); padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.crumb a { color: var(--text-2); }
.crumb a:hover { color: var(--accent-3); }
.crumb .sep { color: var(--text-3); margin: 0 8px; }

/* responsive — global */
@media (max-width: 720px) {
  .hero { padding: 56px 0 50px; }
  .hero h1 { font-size: 32px; }
  .hero p.lead { font-size: 16.5px; }
  .hero .kicker { font-size: 12px; letter-spacing: 2px; }
  section { padding: 50px 0; }
  section h2 { font-size: 26px; }
  section .section-lead { font-size: 15.5px; }
  .card { padding: 22px 20px; }
  .card h3 { font-size: 17px; }
  footer .f-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  table.compare { font-size: 13.5px; }
  table.compare th, table.compare td { padding: 10px 12px; }
  .prose h1 { font-size: 30px; }
  .prose h2 { font-size: 22px; }
  .prose p, .prose li { font-size: 15.5px; }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 28px; }
  footer .f-grid { grid-template-columns: 1fr; }
}

/* ────────── NAV (apex pattern, 借過來) ────────── */
.nav {
  position: sticky; top: 0; z-index: 999;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
  height: 60px; display: flex; align-items: center;
  padding: 0 max(2vw, 1.25rem);
}
.nav-inner { max-width: 1180px; margin: 0 auto; width: 100%; display: flex; justify-content: space-between; align-items: center; font-size: 0.9rem; color: var(--text-2); }
.nav-brand { color: var(--text); font-weight: 700; white-space: nowrap; font-size: 1rem; display: inline-flex; align-items: center; gap: 28px; }
.nav-brand .brand-tail { color: var(--text-2); font-weight: 500; font-size: 0.85rem; margin-left: 6px; }
.nav-links { display: flex; align-items: center; }
.nav-links a { margin-left: 1.4rem; color: var(--text-2); transition: color .2s; white-space: nowrap; font-weight: 500; }
.nav-links a:hover { color: var(--accent-3); }
.nav-toggle, .nav-phone-mobile { display: none; }

/* ───── 手機響應式（< 720px 觸發，跟 apex 一樣斷點）───── */
@media (max-width: 720px) {
  .nav { height: 56px; padding: 0 1.25rem; }
  .nav-brand .brand-tail { display: none; }
  .nav-links {
    position: fixed; inset: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: saturate(180%) blur(22px);
    -webkit-backdrop-filter: saturate(180%) blur(22px);
    flex-direction: column;
    padding: 7.5rem 1.5rem 3rem; gap: 4px;
    transform: translateY(-100%);
    transition: transform .35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000; overflow-y: auto;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a {
    margin: 0; padding: 1.25rem 0;
    border-bottom: 1px solid var(--line);
    color: var(--text); font-size: 1.35rem; font-weight: 500;
    letter-spacing: -0.01em;
    display: flex; justify-content: space-between; align-items: center;
  }
  .nav-links a::after { content: '›'; color: var(--text-3); font-size: 1.5rem; font-weight: 300; }
  .nav-right { display: flex; align-items: center; }
  .nav-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 44px; height: 44px;
    background: transparent; border: none;
    cursor: pointer; padding: 0;
    position: relative; z-index: 1100; color: var(--text);
  }
  .nav-toggle svg {
    width: 20px; height: 20px;
    position: absolute; top: 50%; left: 50%;
    transition: opacity .25s ease, transform .35s cubic-bezier(0.4, 0, 0.2, 1);
  }
  .nav-toggle .ic-menu  { opacity: 1; transform: translate(-50%, -50%) rotate(0deg); }
  .nav-toggle .ic-close { opacity: 0; transform: translate(-50%, -50%) rotate(-90deg); }
  .nav-toggle.open .ic-menu  { opacity: 0; transform: translate(-50%, -50%) rotate(90deg); }
  .nav-toggle.open .ic-close { opacity: 1; transform: translate(-50%, -50%) rotate(0deg); color: var(--accent-3); }
  body.nav-open { overflow: hidden; }
}


  .nav-brand img { height: 38px !important; }
}


/* mascot + wordmark 雙圖並排 brand */
.nav-brand { display: inline-flex; align-items: center; gap: 28px; padding: 6px 0; }
.nav-brand .brand-mascot { height: 44px; width: auto; display: block; }
.nav-brand .brand-wordmark { height: 28px; width: auto; display: block; opacity: 0.92; }
.nav { height: auto !important; min-height: 64px; }
@media (max-width: 720px) {
  .nav { min-height: 56px; }
  .nav-brand .brand-mascot { height: 38px; }
  .nav-brand .brand-wordmark { height: 22px; }
  .nav-brand { gap: 16px; }
}
@media (max-width: 480px) {
  .nav-brand .brand-wordmark { display: none; } /* 超窄畫面只留 mascot */
}