:root {
  --bg: #fafaf7;
  --card: #ffffff;
  --ink: #1a1a1a;
  --ink-soft: #555;
  --ink-faint: #8a8780;
  --line: #e5e3dc;
  --accent: #d4513b;
  --accent-dark: #b23a26;
  --accent-soft: #f5e3df;
  --gold: #c8a96a;
  --green: #6a8f5a;
  --blue: #4a6fa5;
  --ink-deep: #161512;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 8px 24px rgba(0,0,0,.05);
  --maxw: 1120px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 16px;
}

/* ---------- NAV ---------- */
nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250,250,247,.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; letter-spacing: -0.02em; }
.logo .mark {
  width: 30px; height: 30px; border-radius: 8px;
  background: var(--accent); color: #fff;
  display: grid; place-items: center; font-size: 17px; font-weight: 800;
  transform: rotate(-6deg);
}
.nav-links { display: flex; align-items: center; gap: 28px; font-size: 15px; color: var(--ink-soft); }
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); font-weight: 600; }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  padding: 9px 18px; border-radius: 9px; border: 1px solid transparent;
  transition: all .18s ease; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-1px); }
.btn-ghost { color: var(--ink); border-color: var(--line); background: var(--card); }
.btn-ghost:hover { border-color: var(--ink-faint); }
.btn-lg { padding: 13px 26px; font-size: 16px; }
.btn-dark { background: var(--ink-deep); color: #fff; }
.btn-dark:hover { background: #000; }
@media (max-width: 860px){ .nav-links { display: none; } }

/* ---------- HERO ---------- */
.hero { padding: 86px 0 64px; position: relative; overflow: hidden; }
.hero h1 {
  font-size: 56px; line-height: 1.08; letter-spacing: -0.025em;
  font-weight: 800; margin: 0 0 22px; max-width: 880px;
}
.hero h1 .hl { color: var(--accent); }
.hero .sub { font-size: 20px; color: var(--ink-soft); max-width: 660px; margin: 0 0 32px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; margin-bottom: 30px; }
.pay-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 14px; color: var(--ink-faint); }
.pay-pill {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--card); border: 1px solid var(--line);
  padding: 6px 12px; border-radius: 20px; font-weight: 600; color: var(--ink-soft); font-size: 13px;
}
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); }
/* compact hero for subpages */
.hero.sub-hero { padding: 64px 0 48px; }
.hero.sub-hero h1 { font-size: 46px; }
@media (max-width: 700px){ .hero h1 { font-size: 38px; } .hero .sub { font-size: 17px; } .hero.sub-hero h1 { font-size: 34px; } }

/* ---------- SECTION ---------- */
section { padding: 72px 0; }
.sec-head { max-width: 640px; margin-bottom: 44px; }
.sec-head h2 { font-size: 36px; letter-spacing: -0.02em; font-weight: 800; margin: 0 0 14px; }
.sec-head p { font-size: 18px; color: var(--ink-soft); margin: 0; }
.sec-center { margin-left: auto; margin-right: auto; text-align: center; }
.band-card { background: var(--card); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* trust strip */
.trust { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--card); padding: 26px 0; }
.trust-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.trust-label { font-size: 13px; color: var(--ink-faint); letter-spacing: 0.04em; }
.trust-items { display: flex; gap: 34px; flex-wrap: wrap; font-size: 15px; color: var(--ink-soft); font-weight: 600; }
.trust-items code { font-family: "SF Mono", ui-monospace, Menlo, monospace; font-size: 14px; color: var(--accent); background: var(--accent-soft); padding: 2px 8px; border-radius: 6px; }

/* product cards */
.prod-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 820px){ .prod-grid { grid-template-columns: 1fr; } }
.prod {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px; box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.prod .tag { font-size: 13px; font-weight: 700; letter-spacing: 0.04em; color: var(--accent); margin-bottom: 6px; }
.prod h3 { font-size: 26px; margin: 0 0 6px; letter-spacing: -0.01em; }
.prod .vs { font-size: 14px; color: var(--ink-faint); margin: 0 0 18px; }
.prod ul { list-style: none; padding: 0; margin: 0 0 24px; }
.prod li { display: flex; gap: 10px; align-items: flex-start; padding: 7px 0; font-size: 15px; color: var(--ink-soft); }
.prod li .ck { color: var(--green); font-weight: 800; flex: none; }
.prod .more { font-weight: 700; color: var(--accent); font-size: 15px; }
.prod .icon {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
  font-size: 24px; margin-bottom: 18px;
}
.icon-a { background: var(--accent-soft); }
.icon-b { background: #eef2f8; }

/* WEDGE flywheel */
.wedge { background: var(--ink-deep); color: #f4f1ea; }
.wedge .sec-head h2 { color: #fff; }
.wedge .sec-head p { color: #b8b3a8; }
.wedge-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; margin-bottom: 40px; }
@media (max-width: 820px){ .wedge-grid { grid-template-columns: 1fr; } }
.wcard { background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); padding: 28px; }
.wcard .n { font-size: 13px; color: var(--gold); font-weight: 700; letter-spacing: 0.1em; margin-bottom: 12px; }
.wcard h4 { font-size: 19px; margin: 0 0 10px; color: #fff; }
.wcard p { font-size: 15px; color: #b8b3a8; margin: 0; }
.flywheel {
  text-align: center; background: rgba(212,81,59,.12); border: 1px solid rgba(212,81,59,.35);
  border-radius: var(--radius); padding: 26px; font-size: 17px; color: #f4f1ea;
}
.flywheel b { color: var(--gold); }

/* feature rows (subpages) */
.feat-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
@media (max-width: 820px){ .feat-grid { grid-template-columns: 1fr; } }
.fcard { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.fcard .ic { font-size: 26px; margin-bottom: 14px; }
.fcard h4 { font-size: 18px; margin: 0 0 8px; }
.fcard p { font-size: 15px; color: var(--ink-soft); margin: 0; }

/* two-tier GTM / pricing tiers */
.tier-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.tier-grid.three { grid-template-columns: repeat(3,1fr); }
@media (max-width: 820px){ .tier-grid, .tier-grid.three { grid-template-columns: 1fr; } }
.tier { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; }
.tier.feature { border: 2px solid var(--accent); }
.tier .badge { display: inline-block; font-size: 12px; font-weight: 700; background: var(--accent-soft); color: var(--accent-dark); padding: 4px 12px; border-radius: 16px; margin-bottom: 14px; }
.tier .badge.plain { background: #eef0ec; color: var(--ink-soft); }
.tier h3 { font-size: 22px; margin: 0 0 6px; }
.tier .who { font-size: 14px; color: var(--ink-faint); margin: 0 0 20px; }
.tier .price { font-size: 34px; font-weight: 800; letter-spacing: -0.02em; margin: 0 0 4px; }
.tier .price small { font-size: 15px; font-weight: 500; color: var(--ink-faint); }
.tier .price-note { font-size: 14px; color: var(--ink-faint); margin: 0 0 22px; }
.tier ul { list-style: none; padding: 0; margin: 0 0 24px; }
.tier li { padding: 8px 0; font-size: 15px; color: var(--ink-soft); border-bottom: 1px dashed var(--line); }
.tier li:last-child { border-bottom: none; }
.tier .btn { width: 100%; justify-content: center; }

/* comparison / spec table */
.cmp { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.cmp th, .cmp td { padding: 16px 20px; text-align: left; font-size: 15px; border-bottom: 1px solid var(--line); }
.cmp thead th { background: var(--ink-deep); color: #fff; font-weight: 600; font-size: 14px; }
.cmp thead th.k { background: var(--accent); }
.cmp td.feat { color: var(--ink-soft); font-weight: 600; }
.cmp td.yes { color: var(--green); font-weight: 700; }
.cmp td.no { color: var(--ink-faint); }
.cmp tbody tr:last-child td { border-bottom: none; }
.cmp-scroll { overflow-x: auto; }
.cmp td.mono, .cmp th.mono { font-family: "SF Mono", ui-monospace, Menlo, monospace; }

/* localize / generic 3-up */
.loc-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
@media (max-width: 820px){ .loc-grid { grid-template-columns: 1fr; } }
.loc { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.loc .ic { font-size: 26px; margin-bottom: 14px; }
.loc h4 { font-size: 18px; margin: 0 0 8px; }
.loc p { font-size: 15px; color: var(--ink-soft); margin: 0; }

/* FAQ */
.faq { max-width: 760px; margin: 0 auto; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 22px; margin-bottom: 12px; }
.faq summary { font-weight: 600; font-size: 16px; cursor: pointer; list-style: none; display: flex; justify-content: space-between; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-weight: 700; }
.faq details[open] summary::after { content: "−"; }
.faq p { font-size: 15px; color: var(--ink-soft); margin: 14px 0 0; }

/* code block */
.codeblock { background: var(--ink-deep); color: #e6e2d8; border-radius: var(--radius); padding: 22px 24px; font-family: "SF Mono", ui-monospace, Menlo, monospace; font-size: 14px; line-height: 1.7; overflow-x: auto; }
.codeblock .c-key { color: var(--gold); }
.codeblock .c-str { color: #8fb98a; }
.codeblock .c-com { color: #6f6c64; }

/* CTA band */
.cta-band { background: var(--accent); color: #fff; border-radius: 20px; padding: 56px; text-align: center; }
.cta-band h2 { font-size: 38px; margin: 0 0 14px; letter-spacing: -0.02em; }
.cta-band p { font-size: 18px; opacity: .92; margin: 0 0 28px; }
.cta-band .btn-ghost { background: #fff; color: var(--accent); border-color: #fff; }
.cta-band .btn-ghost:hover { background: rgba(255,255,255,.9); }

/* footer */
footer { background: var(--ink-deep); color: #b8b3a8; padding: 56px 0 36px; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px; margin-bottom: 40px; }
@media (max-width: 820px){ .foot-grid { grid-template-columns: 1fr 1fr; } }
footer .logo { color: #fff; margin-bottom: 12px; }
footer h5 { color: #fff; font-size: 14px; margin: 0 0 14px; letter-spacing: 0.04em; }
footer ul { list-style: none; padding: 0; margin: 0; }
footer li { padding: 5px 0; font-size: 14px; }
footer li a:hover { color: #fff; }
.foot-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 13px; color: var(--ink-faint); }
.foot-tagline { max-width: 280px; font-size: 14px; }