:root {
  --bg: #07111f;
  --bg-soft: rgba(9, 24, 39, 0.84);
  --panel: rgba(9, 25, 41, 0.9);
  --panel-strong: rgba(8, 20, 33, 0.96);
  --panel-subtle: rgba(16, 34, 52, 0.72);
  --line: rgba(151, 191, 214, 0.16);
  --line-strong: rgba(110, 231, 212, 0.32);
  --text: #eaf2f7;
  --muted: #9bb1bf;
  --accent: #61dec9;
  --accent-soft: rgba(97, 222, 201, 0.12);
  --accent-alt: #89c8ff;
  --warning: #ffb878;
  --shadow: 0 32px 90px rgba(0, 0, 0, 0.3);
  --radius-xl: 30px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --shell: min(1180px, calc(100vw - 2rem));
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background:
    radial-gradient(circle at 12% 0%, rgba(97, 222, 201, 0.12), transparent 28%),
    radial-gradient(circle at 88% 12%, rgba(255, 184, 120, 0.1), transparent 20%),
    linear-gradient(180deg, #08111d 0%, #040913 100%);
  color: var(--text);
  font-family: "IBM Plex Sans", "Noto Sans TC", "Noto Sans JP", sans-serif;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.js [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 30px, 0);
  transition:
    opacity 680ms cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 860ms cubic-bezier(0.2, 0.8, 0.2, 1);
  transition-delay: var(--reveal-delay, 0ms);
}

.js [data-reveal="left"] {
  transform: translate3d(-34px, 0, 0);
}

.js [data-reveal="right"] {
  transform: translate3d(34px, 0, 0);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

[data-parallax] {
  transform: translate3d(0, var(--parallax-shift, 0), 0);
  will-change: transform;
}

.page-frame {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(transparent 0, transparent calc(100% - 1px), rgba(255, 255, 255, 0.02) calc(100% - 1px)),
    linear-gradient(90deg, transparent 0, transparent calc(100% - 1px), rgba(255, 255, 255, 0.02) calc(100% - 1px));
  background-size: 100% 120px, 120px 100%;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.2), transparent 86%);
}

.shell {
  width: var(--shell);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(4, 10, 19, 0.74);
  border-bottom: 1px solid var(--line);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1rem 0;
}

.brandmark {
  display: flex;
  flex-direction: column;
  gap: 0.16rem;
  min-width: 0;
}

.brandmark-kicker,
.eyebrow,
.content-card-meta {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.brandmark-title {
  color: var(--text);
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  font-size: 0.95rem;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex: 1;
}

.main-nav a,
.language-switcher a {
  color: var(--muted);
  transition: color 180ms ease, border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

.main-nav a:hover,
.language-switcher a:hover {
  color: var(--text);
}

.language-switcher {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.language-switcher a {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
}

.language-switcher a.active {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.hero,
.page-hero,
.section-grid,
.trust-strip,
.split-callout,
.about-callout,
.article-layout {
  padding: 2.25rem 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: 1.25rem;
  align-items: stretch;
}

.hero-copy,
.hero-panel,
.page-hero-copy,
.page-hero-aside,
.trust-strip,
.split-callout,
.about-callout,
.content-card,
.article-layout {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero-copy,
.hero-panel,
.page-hero-copy,
.page-hero-aside,
.trust-strip,
.split-callout,
.about-callout,
.article-layout {
  padding: clamp(1.4rem, 2.1vw, 2rem);
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--text);
  font-family: "Space Grotesk", "Noto Sans TC", "Noto Sans JP", sans-serif;
  line-height: 1.04;
}

h1 {
  font-size: clamp(2.5rem, 4.7vw, 4.8rem);
  max-width: 11ch;
}

h2 {
  font-size: clamp(1.65rem, 2.55vw, 2.7rem);
}

h3 {
  font-size: clamp(1.15rem, 1.8vw, 1.4rem);
}

p,
li {
  color: var(--muted);
  line-height: 1.72;
}

ul {
  margin: 0;
  padding-left: 1rem;
}

.hero-body,
.article-summary {
  max-width: 62ch;
  font-size: 1rem;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 500px;
  background:
    linear-gradient(135deg, rgba(97, 222, 201, 0.08), transparent 32%),
    var(--panel-strong);
}

.hero-copy h1 {
  margin-top: 0.45rem;
}

.hero-copy::after {
  content: "";
  width: min(240px, 42%);
  height: 1px;
  margin-top: 1.4rem;
  background: linear-gradient(90deg, rgba(97, 222, 201, 0.75), transparent);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.72rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-weight: 600;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #031019;
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), #9ff0e2);
}

.button-secondary {
  background: var(--accent-soft);
}

.hero-panel {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 1.2rem;
  background:
    linear-gradient(160deg, rgba(137, 200, 255, 0.08), transparent 52%),
    linear-gradient(180deg, rgba(97, 222, 201, 0.06), transparent 50%),
    var(--panel-strong);
}

.hero-visual,
.page-hero-art {
  overflow: hidden;
  border-radius: calc(var(--radius-xl) - 8px);
  border: 1px solid rgba(151, 191, 214, 0.12);
  background: rgba(255, 255, 255, 0.02);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.hero-visual img,
.page-hero-art img {
  width: 100%;
  height: auto;
}

.hero-panel-copy,
.page-hero-panel-copy {
  display: grid;
  gap: 0.85rem;
}

.hero-panel-copy h2 {
  font-size: clamp(1.5rem, 2.1vw, 2.1rem);
  max-width: 16ch;
}

.translation-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.translation-pills.compact {
  margin-top: 0.1rem;
}

.translation-pill {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.38rem 0.78rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.02);
}

.translation-pill.active {
  background: var(--accent-soft);
  color: var(--text);
}

.signal-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
}

.signal-metric {
  padding: 0.9rem 0.95rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.signal-metric strong {
  display: block;
  color: var(--text);
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.45rem;
}

.signal-metric span {
  display: block;
  margin-top: 0.18rem;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  gap: 1.25rem;
  align-items: stretch;
}

.page-hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background:
    linear-gradient(135deg, rgba(97, 222, 201, 0.06), transparent 42%),
    var(--panel-strong);
}

.page-hero-copy h1 {
  max-width: 13ch;
  font-size: clamp(2.15rem, 3.9vw, 3.7rem);
  margin-top: 0.35rem;
}

.page-hero-aside {
  display: grid;
  gap: 1rem;
  background:
    linear-gradient(180deg, rgba(137, 200, 255, 0.06), transparent 44%),
    var(--panel);
}

.signal-list {
  display: grid;
  gap: 0.55rem;
  padding-left: 1rem;
}

.signal-list li::marker {
  color: var(--accent);
}

.section-grid {
  display: grid;
  gap: 1.2rem;
}

.section-heading {
  max-width: 58ch;
}

.section-body {
  margin-top: 0.75rem;
}

.card-grid,
.resource-stack,
.trust-points {
  display: grid;
  gap: 1rem;
}

.card-grid {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.content-card {
  position: relative;
  display: grid;
  align-content: start;
  gap: 0.8rem;
  min-height: 220px;
  padding: 1.35rem;
  background:
    linear-gradient(180deg, rgba(97, 222, 201, 0.04), transparent 34%),
    rgba(9, 24, 39, 0.94);
  transition: transform 220ms ease, border-color 220ms ease, background 220ms ease;
}

.content-card::before {
  content: "";
  width: 58px;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-alt));
}

.content-card:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
  background:
    linear-gradient(180deg, rgba(97, 222, 201, 0.08), transparent 34%),
    rgba(14, 31, 48, 0.98);
}

.content-card p {
  margin: 0;
}

.trust-strip,
.split-callout {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 0.95fr);
  gap: 1.25rem;
}

.trust-strip {
  align-items: start;
}

.trust-points {
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.trust-point {
  min-height: 148px;
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.resource-stack {
  align-content: start;
}

.about-callout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.article-layout {
  background:
    linear-gradient(180deg, rgba(97, 222, 201, 0.05), transparent 28%),
    var(--panel-strong);
}

.article-layout h1 {
  max-width: 16ch;
  font-size: clamp(2rem, 3.4vw, 3.25rem);
}

.article-layout .language-switcher {
  margin: 1rem 0 0;
}

.prose-block > :where(p, ul, ol) {
  max-width: 70ch;
}

.prose-block h2 {
  margin-top: 2rem;
  margin-bottom: 0.7rem;
}

.translation-status {
  margin: 1.2rem 0 2rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.related-block {
  margin-top: 3rem;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  [data-parallax] {
    transform: none;
  }

  .button,
  .content-card,
  .main-nav a,
  .language-switcher a {
    transition: none;
  }
}

@media (max-width: 1100px) {
  .nav-shell {
    flex-wrap: wrap;
  }

  .main-nav {
    order: 3;
    justify-content: flex-start;
    flex: 1 1 100%;
  }
}

@media (max-width: 960px) {
  .hero,
  .page-hero,
  .trust-strip,
  .split-callout,
  .about-callout {
    grid-template-columns: 1fr;
  }

  .hero-copy,
  .page-hero-copy {
    min-height: auto;
  }

  .signal-metrics {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }
}

@media (max-width: 720px) {
  .shell {
    width: min(100vw - 1rem, 100%);
  }

  .hero,
  .page-hero,
  .section-grid,
  .trust-strip,
  .split-callout,
  .about-callout,
  .article-layout {
    padding: 1.2rem 0;
  }

  .hero-copy,
  .hero-panel,
  .page-hero-copy,
  .page-hero-aside,
  .trust-strip,
  .split-callout,
  .about-callout,
  .article-layout,
  .content-card {
    border-radius: 22px;
  }

  .main-nav {
    gap: 1rem;
  }

  .main-nav,
  .hero-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .language-switcher {
    width: 100%;
    justify-content: space-between;
  }

  .language-switcher a {
    flex: 1 1 0;
    min-width: 0;
  }

  h1 {
    font-size: clamp(2.25rem, 12vw, 3.4rem);
  }

  .page-hero-copy h1,
  .article-layout h1 {
    max-width: none;
  }
}