/* pii-mask website — light only (first release). Tokens mirror the app's light theme. */
:root {
  --bg: #f2f2f7; --group: #ffffff; --label: #000000; --label-2: rgba(60, 60, 67, 0.6);
  --sep: rgba(60, 60, 67, 0.29); --tint: #007aff; --tint-fill: rgba(0, 122, 255, 0.1); --warn: #c93400;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", "Segoe UI", sans-serif;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--label); font: 400 17px/1.6 var(--font); -webkit-font-smoothing: antialiased; }
a { color: var(--tint); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.en { display: block; color: var(--label-2); font-size: 0.82em; font-weight: 400; margin-top: 4px; }

header.nav { position: sticky; top: 0; z-index: 10; background: rgba(242, 242, 247, 0.85); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border-bottom: 0.5px solid var(--sep); }
header.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; color: var(--label); }
.brand img { width: 28px; height: 28px; border-radius: 7px; }
.nav-links { display: flex; gap: 20px; font-size: 15px; }

.hero { padding: 72px 0 40px; display: grid; gap: 40px; align-items: center; }
.hero h1 { font: 700 clamp(34px, 6vw, 56px)/1.12 var(--font); margin: 0; letter-spacing: -0.01em; }
.hero h1 .en { font-size: 0.42em; margin-top: 12px; }
.hero p.lead { font-size: 19px; color: var(--label-2); margin: 20px 0 0; max-width: 34em; }
.trust { display: flex; flex-wrap: wrap; gap: 8px 16px; margin: 18px 0 0; padding: 0; list-style: none; font-size: 15px; color: var(--label-2); }
.trust li::before { content: "✓ "; color: var(--tint); font-weight: 700; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 22px; border-radius: 12px; font: 600 17px/1 var(--font); }
.btn:hover { text-decoration: none; opacity: 0.85; }
.btn.primary { background: var(--tint); color: #fff; }
.btn.secondary { background: var(--tint-fill); color: var(--tint); }
.shot { width: 100%; height: auto; border-radius: 16px; box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12); background: var(--group); display: block; }
.shot-caption { font-size: 13px; color: var(--label-2); text-align: center; margin-top: 10px; }

section { padding: 56px 0; }
section h2 { font: 700 30px/1.25 var(--font); margin: 0 0 24px; }
.cards { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { background: var(--group); border-radius: 14px; padding: 22px; }
.card h3 { font: 600 19px/1.3 var(--font); margin: 0 0 8px; }
.card p { margin: 0; color: var(--label-2); font-size: 16px; }
.steps { counter-reset: step; }
.steps .card h3::before { counter-increment: step; content: counter(step); display: inline-grid; place-items: center; width: 28px; height: 28px; margin-right: 10px; border-radius: 50%; background: var(--tint); color: #fff; font-size: 15px; }
.types { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; padding: 0; list-style: none; }
.types li { background: var(--tint-fill); color: var(--tint); padding: 6px 12px; border-radius: 8px; font-size: 15px; font-weight: 500; }

.pricing { background: var(--group); border-radius: 18px; padding: 32px; display: grid; gap: 24px; }
.price { font: 700 44px/1 var(--font); }
.price small { font-size: 17px; font-weight: 400; color: var(--label-2); margin-left: 6px; }
.compare { width: 100%; border-collapse: collapse; font-size: 16px; }
.compare th, .compare td { text-align: left; padding: 12px 8px; border-bottom: 0.5px solid var(--sep); vertical-align: top; }
.compare th { color: var(--label-2); font-weight: 500; }
.intro { color: var(--tint); font-weight: 600; margin: 0; }
.fine { font-size: 14px; color: var(--label-2); margin: 0; }

.honest { background: #fff4e5; border-radius: 14px; padding: 22px 24px; border-left: 4px solid var(--warn); }
.honest strong { color: var(--warn); }

details.faq { background: var(--group); border-radius: 12px; margin-bottom: 10px; }
details.faq summary { cursor: pointer; padding: 16px 20px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after { content: "＋"; color: var(--label-2); font-weight: 400; }
details.faq[open] summary::after { content: "－"; }
details.faq .a { padding: 0 20px 18px; color: var(--label-2); }
details.faq .a p { margin: 0 0 8px; }

footer { padding: 40px 0 56px; border-top: 0.5px solid var(--sep); font-size: 14px; color: var(--label-2); }
footer .links { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-bottom: 12px; }

/* privacy page */
.doc { max-width: 760px; margin: 0 auto; padding: 48px 20px 64px; }
.doc h1 { font: 700 34px/1.2 var(--font); margin: 0 0 8px; }
.doc h2 { font: 700 22px/1.3 var(--font); margin: 36px 0 10px; }
.doc .meta { color: var(--label-2); font-size: 15px; }
.doc table { width: 100%; border-collapse: collapse; font-size: 15px; background: var(--group); border-radius: 12px; overflow: hidden; }
.doc th, .doc td { text-align: left; padding: 10px 12px; border-bottom: 0.5px solid var(--sep); vertical-align: top; }
.doc th { background: rgba(118, 118, 128, 0.08); font-weight: 600; }
.doc .box { background: var(--group); border-radius: 12px; padding: 16px 20px; }

@media (min-width: 900px) {
  .hero { grid-template-columns: 1fr 1.15fr; padding-top: 96px; }
  .pricing { grid-template-columns: 1fr 1.4fr; align-items: start; }
}
@media (max-width: 600px) {
  .nav-links a:not(.keep) { display: none; }
  .pricing { padding: 22px; }
}