/* gxlself Paste — docs site shared layout */
:root {
  --bg: #0c0f14;
  --bg-elevated: #141a22;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8eaed;
  --text-muted: #9aa4af;
  --accent: #f0a030;
  --accent-dim: rgba(240, 160, 48, 0.18);
  --green: #3fb950;
  --wechat: #07c160;
  --wechat-soft: rgba(7, 193, 96, 0.12);
  --wechat-ring: rgba(7, 193, 96, 0.35);
  --alipay: #1677ff;
  --alipay-soft: rgba(22, 119, 255, 0.12);
  --alipay-ring: rgba(22, 119, 255, 0.35);
  --radius: 12px;
  --radius-lg: 16px;
  --max: 960px;
  --focus-ring: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: "DM Sans", system-ui, sans-serif;
  font-optical-sizing: auto;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  font-size: 1rem;
}

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 0;
}

.glow {
  position: fixed;
  top: -20%;
  right: -10%;
  width: 55vw;
  max-width: 640px;
  height: 55vh;
  background: radial-gradient(ellipse, var(--accent-dim) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.glow-left {
  right: auto;
  left: -10%;
}

header, main, footer { position: relative; z-index: 1; }

a { color: var(--accent); text-decoration: none; cursor: pointer; }
a:hover { text-decoration: underline; }
a:focus-visible {
  outline: none;
  border-radius: 4px;
  box-shadow: var(--focus-ring);
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ——— Site nav ——— */
.site-header {
  padding: 1rem 0 0;
  border-bottom: 1px solid var(--border);
}

.site-nav {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding-bottom: 1rem;
  margin-bottom: 0;
}

.site-nav__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1rem;
}

/* Single-line nav on desktop; horizontal scroll on narrow viewports (no awkward wrap) */
.site-nav__links {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.125rem 0.35rem;
  font-size: 0.875rem;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  padding: 0.35rem 0 0.65rem;
  margin-left: -0.35rem;
  margin-right: -0.35rem;
  padding-left: 0.35rem;
  padding-right: 0.35rem;
}

@media (min-width: 1024px) {
  .site-nav__links {
    flex-wrap: wrap;
    overflow-x: visible;
    row-gap: 0.35rem;
  }
}

.site-nav__links a {
  color: var(--text-muted);
  padding: 0.45rem 0.4rem;
  border-radius: 6px;
  white-space: nowrap;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  transition: color 0.15s ease, background-color 0.15s ease;
}

@media (prefers-reduced-motion: reduce) {
  .site-nav__links a { transition: none; }
}

.site-nav__links a:hover {
  color: var(--text);
  text-decoration: none;
  background-color: rgba(255, 255, 255, 0.04);
}

.site-nav__links a.nav-current {
  color: var(--text);
  font-weight: 600;
}

.site-nav__sep {
  color: var(--border);
  user-select: none;
  font-size: 0.75rem;
  padding: 0 0.15rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: "JetBrains Mono", monospace;
  font-weight: 500;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--text);
}

.logo-app-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
}

.logo a { color: inherit; }
.logo a:hover { text-decoration: none; color: var(--accent); }
.logo span { color: var(--accent); }

.btn-nav-cta {
  min-height: 38px;
  padding: 0 1rem;
  font-size: 0.875rem;
}

/* ——— Hero (home + inner pages) ——— */
.hero { padding: 2rem 0 3.25rem; }
.hero h1, .page-hero h1 {
  font-size: clamp(1.85rem, 4.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  max-width: 22ch;
}

.page-hero h1 { max-width: 28ch; }

.hero p.lead, .page-hero .lead {
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: 38rem;
  margin: 0 0 1.5rem;
}

.page-hero {
  padding: 2rem 0 2.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}

.section-kicker {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.5rem;
}

.badge {
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  font-weight: 500;
  padding: 0.35rem 0.6rem;
  border-radius: 8px;
  background: var(--accent-dim);
  color: var(--accent);
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 1.35rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9375rem;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: box-shadow 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

@media (prefers-reduced-motion: reduce) { .btn { transition: none; } }

.btn:focus-visible { box-shadow: var(--focus-ring); }
.btn-primary {
  background: var(--accent);
  color: #0c0f14;
}
.btn-primary:hover {
  text-decoration: none;
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.btn-ghost {
  background: var(--bg-elevated);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  text-decoration: none;
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.04);
}

.lang-note {
  margin-top: 1.15rem;
  font-size: 0.9375rem;
  color: var(--text-muted);
  max-width: 36rem;
}

.disclaimer {
  font-size: 0.8125rem;
  color: var(--text-muted);
  max-width: 42rem;
  padding: 0.85rem 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-top: 1rem;
  line-height: 1.5;
}
.disclaimer strong { color: var(--text); }

/* ——— Sections ——— */
section, .site-section {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border);
}
section:last-of-type, .site-section:last-of-type { border-bottom: none; }

h2 {
  font-size: 1.375rem;
  font-weight: 700;
  margin: 0 0 0.65rem;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.section-lead {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 42rem;
  margin: 0 0 1.75rem;
  line-height: 1.6;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.5rem 1.35rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

@media (prefers-reduced-motion: reduce) { .card { transition: none; } }

.card:hover {
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.card h3 {
  margin: 0 0 0.6rem;
  font-size: 1.0625rem;
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.card h3 .icon-svg {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--accent);
}

.card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.card .meta {
  margin-top: 0.85rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  color: var(--green);
  letter-spacing: 0.01em;
}

ul.features {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--text-muted);
  font-size: 0.96875rem;
  max-width: 48rem;
}
ul.features li { margin-bottom: 0.65rem; }
ul.features li:last-child { margin-bottom: 0; }
ul.features strong { color: var(--text); }

.req {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8125rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.15rem 1.35rem;
  overflow-x: auto;
}
.req dt {
  color: var(--accent);
  margin-top: 0.85rem;
  font-weight: 500;
}
.req dt:first-child { margin-top: 0; }
.req dd {
  margin: 0.35rem 0 0;
  color: var(--text-muted);
  line-height: 1.55;
}

/* Sponsor */
#sponsor { padding-bottom: 4rem; }
.sponsor-cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.25rem, 4vw, 2.25rem);
  align-items: start;
}
@media (max-width: 720px) {
  .sponsor-cards {
    grid-template-columns: 1fr;
    max-width: 280px;
    margin: 0 auto;
  }
}
.sponsor-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.sponsor-card__frame {
  width: 100%;
  max-width: 220px;
  border-radius: var(--radius-lg);
  padding: 14px;
  background: var(--bg-elevated);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.06) inset,
    0 20px 50px -12px rgba(0, 0, 0, 0.55);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}
@media (prefers-reduced-motion: reduce) { .sponsor-card__frame { transition: none; } }
.sponsor-card__frame:hover {
  transform: translateY(-3px);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.08) inset,
    0 28px 60px -12px rgba(0, 0, 0, 0.6);
}
@media (prefers-reduced-motion: reduce) {
  .sponsor-card__frame:hover { transform: none; }
}
.sponsor-card--wechat .sponsor-card__frame {
  border: 1px solid var(--wechat-ring);
  background: linear-gradient(165deg, var(--wechat-soft) 0%, var(--bg-elevated) 45%);
}
.sponsor-card--alipay .sponsor-card__frame {
  border: 1px solid var(--alipay-ring);
  background: linear-gradient(165deg, var(--alipay-soft) 0%, var(--bg-elevated) 45%);
}
.sponsor-card--oa .sponsor-card__frame {
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.06) 0%, var(--bg-elevated) 50%);
}
.sponsor-card__frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
}
.sponsor-card__label {
  display: block;
  margin-top: 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.sponsor-card--wechat .sponsor-card__label { color: rgba(125, 220, 170, 0.95); }
.sponsor-card--alipay .sponsor-card__label { color: rgba(130, 180, 255, 0.95); }
.sponsor-card__hint {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

/* Features page */
.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
}
.pillar {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.35rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
@media (prefers-reduced-motion: reduce) { .pillar { transition: none; } }
.pillar:hover {
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
}
.pillar .label {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--green);
  margin-bottom: 0.65rem;
}
.pillar h3 { margin: 0 0 0.5rem; font-size: 1.125rem; }
.pillar p { margin: 0; font-size: 0.9375rem; color: var(--text-muted); }

.two-col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 0.5rem;
}
.highlight-box {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.35rem;
}
.highlight-box h3 { margin: 0 0 0.5rem; font-size: 1.0625rem; }
.highlight-box p { margin: 0; color: var(--text-muted); font-size: 0.9375rem; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.15rem;
}
.feat {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.35rem 1.25rem;
  background: rgba(255, 255, 255, 0.02);
}
.feat h4 { margin: 0 0 0.45rem; font-size: 1rem; }
.feat p { margin: 0; font-size: 0.9rem; color: var(--text-muted); line-height: 1.55; }

.use-cases {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}
.use-case {
  padding: 1.25rem 0;
  border-top: 1px solid var(--border);
}
.use-case:first-child { border-top: none; padding-top: 0; }
@media (min-width: 720px) {
  .use-case {
    border-top: none;
    border-left: 1px solid var(--border);
    padding: 0 0 0 1.25rem;
  }
  .use-case:first-child { border-left: none; padding-left: 0; }
}
.use-case .role {
  font-weight: 700;
  font-size: 0.9375rem;
  margin-bottom: 0.4rem;
  color: var(--accent);
}
.use-case p { margin: 0; font-size: 0.9rem; color: var(--text-muted); }

.cta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

/* Persona / help */
.persona-block {
  max-width: 40rem;
  margin-bottom: 2rem;
}
.persona-block h2 { margin-bottom: 0.75rem; }
.persona-block p { color: var(--text-muted); margin: 0 0 1rem; }

.link-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.link-list li {
  border-bottom: 1px solid var(--border);
  padding: 0.85rem 0;
}
.link-list a { font-weight: 600; }
.link-list span { display: block; font-size: 0.875rem; color: var(--text-muted); margin-top: 0.25rem; font-weight: 400; }

.faq details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  margin-bottom: 0.65rem;
  background: var(--bg-elevated);
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq details[open] summary { margin-bottom: 0.5rem; }
.faq details p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.updates-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.updates-list li {
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  align-items: baseline;
}
.updates-list time {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8125rem;
  color: var(--accent);
  flex-shrink: 0;
}
.updates-list a { font-weight: 600; }

/* Footer columns */
.site-footer {
  padding: 2.5rem 0 2rem;
  border-top: 1px solid var(--border);
  margin-top: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 2rem 2.5rem;
  margin-bottom: 2rem;
  text-align: left;
}

.footer-col-title {
  font-weight: 700;
  color: var(--text);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.85rem;
}

.footer-grid a {
  display: block;
  color: var(--text-muted);
  padding: 0.25rem 0;
  text-decoration: none;
}
.footer-grid a:hover { color: var(--accent); }

.footer-copy {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-muted);
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  margin: 0;
}

.footer-row-inline {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.5rem 0.85rem;
}
.footer-row-inline a { color: var(--text-muted); }
.footer-row-inline a:hover { color: var(--accent); }
.footer-site {
  font-weight: 600;
  color: var(--text);
}
.footer-site:hover { color: var(--accent); text-decoration: none; }