:root {
  color-scheme: light dark;
  --panel: #f6ecdd;
  --card: #fffdf8;
  --ink: #38312a;
  --muted: #7d7264;
  --line: #eee0cd;
  --sky: #6c5ce7;
  --sky-ink: #5a4bd1;
  --sky-soft: #eeeafd;
  --navy: #2e2822;
  --on-accent: #ffffff;
  --font-sans: "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --panel: #26211b;
    --card: #2e2820;
    --ink: #f3ecdf;
    --muted: #b5a891;
    --line: #3d342a;
    --sky: #8b7cf0;
    --sky-ink: #c4bbff;
    --sky-soft: #3a3358;
    --navy: #12100e;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-sans);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #d8d0ff55, transparent 60%),
    radial-gradient(900px 420px at 100% 0%, #ffd9a855, transparent 55%),
    var(--panel);
  line-height: 1.6;
}

a {
  color: var(--sky-ink);
  text-underline-offset: 0.15em;
}

a:hover {
  opacity: 0.88;
}

.wrap {
  width: min(720px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.75rem 0 3.5rem;
}

.nav-shell {
  position: sticky;
  top: 0.85rem;
  z-index: 50;
  display: flex;
  justify-content: center;
  padding: 0 1rem;
  pointer-events: none;
}

.nav-pill {
  pointer-events: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  width: min(1120px, 100%);
  padding: 0.65rem 0.85rem 0.65rem 1.1rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
  background: color-mix(in srgb, var(--card) 78%, transparent);
  backdrop-filter: blur(16px) saturate(1.2);
  box-shadow: 0 10px 40px -24px rgb(42 36 30 / 0.45);
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: inherit;
}

.nav-brand img {
  height: 1.85rem;
  width: auto;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.15rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--ink);
  background: color-mix(in srgb, var(--sky-soft) 70%, transparent);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.4rem;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  background: var(--navy);
  color: var(--on-accent) !important;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
}

.nav-cta:hover {
  opacity: 0.92;
}

.hero {
  margin: 1rem 0 2rem;
  padding: 1.75rem 1.35rem;
  border-radius: 22px;
  background: var(--card);
  border: 1px solid var(--line);
}

.hero h1 {
  margin: 0.35rem 0 0.5rem;
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.eyebrow {
  margin: 0;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sky-ink);
  font-weight: 600;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-height: 2.75rem;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  border: none;
  text-decoration: none;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary {
  background: var(--sky);
  color: var(--on-accent);
}

.btn-secondary {
  background: var(--sky-soft);
  color: var(--sky-ink);
}

.features {
  display: grid;
  gap: 0.85rem;
  margin: 0 0 2rem;
  padding: 0;
  list-style: none;
}

.features li {
  padding: 1rem 1.1rem;
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--line);
}

.features strong {
  display: block;
  margin-bottom: 0.2rem;
}

.features span {
  color: var(--muted);
  font-size: 0.95rem;
}

.article h1 {
  margin: 0.5rem 0 0.35rem;
  font-size: clamp(1.6rem, 3.5vw, 2rem);
  line-height: 1.25;
}

.meta {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.article h2 {
  margin: 1.75rem 0 0.5rem;
  font-size: 1.15rem;
}

.article p,
.article li {
  color: var(--ink);
}

.article ul {
  padding-left: 1.2rem;
}

.article li + li {
  margin-top: 0.35rem;
}

.note {
  margin: 1.25rem 0;
  padding: 0.9rem 1rem;
  border-radius: 16px;
  background: var(--sky-soft);
  color: var(--sky-ink);
  font-size: 0.95rem;
}

.footer {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.875rem;
}

.footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  margin-bottom: 0.75rem;
}