:root {
  color-scheme: dark;
  font-family: "Noto Sans TC", system-ui, sans-serif;
  color: #e7f4ff;
  background: #020c15;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 82% 0%, rgba(20, 113, 160, .22), transparent 34rem),
    linear-gradient(180deg, #061624 0%, #020c15 55%, #020910 100%);
  line-height: 1.65;
}

a { color: #83d8ff; }
a:hover { color: #c6f0ff; }

.public-shell { width: min(1100px, calc(100% - 32px)); margin: 0 auto; }

.public-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid rgba(148, 190, 216, .18);
}

.public-brand { display: inline-flex; align-items: center; gap: 12px; color: #e7f4ff; text-decoration: none; }
.public-brand img { width: 42px; height: 42px; object-fit: contain; }
.public-brand strong { display: block; font-family: "IBM Plex Mono", ui-monospace, monospace; letter-spacing: .08em; font-size: 1rem; }
.public-brand span { display: block; color: #8fa9ba; font-size: .8125rem; }
.public-nav { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 16px; font-size: .9375rem; }
.public-nav a { text-decoration: none; }
.public-nav .public-nav-cta { padding: 8px 14px; border: 1px solid rgba(131, 216, 255, .5); border-radius: 999px; background: rgba(24, 103, 142, .2); }

.public-main { padding: 64px 0 80px; }
.public-hero { max-width: 760px; }
.public-eyebrow { margin: 0 0 10px; color: #83d8ff; font: 500 .8125rem/1.4 "IBM Plex Mono", ui-monospace, monospace; letter-spacing: .12em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.25; }
h1 { max-width: 780px; margin: 0; font-size: clamp(2.25rem, 6vw, 4.6rem); letter-spacing: -.04em; }
h2 { margin: 0; font-size: clamp(1.45rem, 3vw, 2rem); }
h3 { margin: 0; font-size: 1.1rem; }
.public-lede { max-width: 680px; margin: 22px 0 0; color: #b7cedb; font-size: 1.125rem; }
.public-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.public-button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 9px 17px; border: 1px solid rgba(131, 216, 255, .52); border-radius: 10px; color: #e7f4ff; background: #0b3044; text-decoration: none; font-weight: 700; }
.public-button.secondary { border-color: rgba(148, 190, 216, .3); color: #b7cedb; background: rgba(8, 28, 42, .62); }
.public-button:focus-visible, .public-nav a:focus-visible, summary:focus-visible { outline: 3px solid #ffd166; outline-offset: 3px; }

.public-section { margin-top: 64px; }
.public-section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.public-section-heading p { max-width: 520px; margin: 0; color: #9eb6c5; }
.public-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.public-card, .public-callout { padding: 24px; border: 1px solid rgba(148, 190, 216, .18); border-radius: 16px; background: rgba(8, 27, 40, .74); box-shadow: 0 18px 45px rgba(0, 0, 0, .14); }
.public-card p, .public-callout p { margin: 10px 0 0; color: #b7cedb; }
.public-card .public-kicker { display: block; margin-bottom: 8px; color: #6bb9d9; font: 500 .75rem/1.4 "IBM Plex Mono", ui-monospace, monospace; letter-spacing: .1em; }
.public-callout { border-color: rgba(255, 209, 102, .3); background: rgba(63, 46, 15, .2); }
.public-callout strong { color: #ffd166; }
.public-list { margin: 14px 0 0; padding-left: 1.25rem; color: #b7cedb; }
.public-list li + li { margin-top: 8px; }

.public-steps { display: grid; gap: 12px; counter-reset: public-step; }
.public-step { display: grid; grid-template-columns: 42px 1fr; gap: 16px; align-items: start; padding: 20px; border: 1px solid rgba(148, 190, 216, .18); border-radius: 14px; background: rgba(8, 27, 40, .74); }
.public-step::before { counter-increment: public-step; content: counter(public-step); display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; color: #061624; background: #83d8ff; font: 700 1rem/1 "IBM Plex Mono", ui-monospace, monospace; }
.public-step p { margin: 7px 0 0; color: #b7cedb; }
.public-faq { display: grid; gap: 10px; }
.public-faq details { padding: 16px 18px; border: 1px solid rgba(148, 190, 216, .18); border-radius: 12px; background: rgba(8, 27, 40, .74); }
.public-faq summary { cursor: pointer; font-weight: 700; }
.public-faq details p { margin: 12px 0 0; color: #b7cedb; }
.public-footer { padding: 22px 0 36px; border-top: 1px solid rgba(148, 190, 216, .18); color: #8fa9ba; font-size: .875rem; }
.public-footer p { margin: 4px 0; }

@media (max-width: 680px) {
  .public-shell { width: min(100% - 24px, 560px); }
  .public-header { align-items: flex-start; flex-direction: column; gap: 14px; }
  .public-nav { justify-content: flex-start; gap: 10px 14px; }
  .public-main { padding: 42px 0 56px; }
  .public-lede { font-size: 1rem; }
  .public-grid { grid-template-columns: 1fr; }
  .public-section-heading { align-items: flex-start; flex-direction: column; gap: 8px; }
  .public-card, .public-callout { padding: 20px; }
}