:root {
  --bg: #020614;
  --bg-soft: #07102a;
  --panel: rgba(8, 16, 42, 0.76);
  --panel-strong: rgba(8, 17, 46, 0.94);
  --line: rgba(112, 158, 255, 0.2);
  --line-strong: rgba(27, 214, 239, 0.42);
  --text: #f5f8ff;
  --muted: #aab7d5;
  --cyan: #12d9ee;
  --blue: #2477ff;
  --hero-gradient-start: #ffffff;
  --hero-gradient-mid: #8eeeff;
  --hero-gradient-end: #6f93ff;
  --orange: #ff9a24;
  --shadow: rgba(0, 0, 0, 0.45);
  --max: 1200px;
  color-scheme: dark light;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html {
  min-height: 100%;
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 80% 8%, rgba(21, 81, 210, 0.22), transparent 30rem),
    radial-gradient(circle at 12% 18%, rgba(18, 217, 238, 0.1), transparent 26rem),
    linear-gradient(180deg, #030717 0%, #020510 48%, #04091b 100%);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  opacity: 0.23;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(78, 122, 213, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(78, 122, 213, 0.08) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}

body.is-switching main { opacity: 0.65; }
main { transition: opacity 120ms ease; }

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
  padding: 12px max(24px, calc((100vw - var(--max)) / 2));
  background: rgba(2, 6, 20, 0.74);
  border-bottom: 1px solid rgba(120, 156, 241, 0.14);
  backdrop-filter: blur(24px) saturate(1.25);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 182px;
  color: var(--text);
}

.brand:hover { text-decoration: none; }

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  box-shadow: 0 0 28px rgba(18, 217, 238, 0.18);
}

.brand span { display: grid; gap: 2px; }
.brand strong { font-size: 17px; letter-spacing: 0.06em; text-transform: uppercase; }
.brand small { color: var(--muted); font-size: 11px; }

.topbar-controls,
.navlinks,
.pickers { display: flex; align-items: center; }

.topbar-controls { gap: clamp(14px, 2vw, 28px); }
.navlinks { gap: clamp(10px, 1.5vw, 22px); }

.navlinks a {
  position: relative;
  padding: 9px 0;
  color: #d5def4;
  font-size: 13px;
  white-space: nowrap;
}

.navlinks a::after {
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 2px;
  height: 2px;
  content: "";
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  transition: right 160ms ease;
}

.navlinks a:hover,
.navlinks a[aria-current="page"] { color: white; text-decoration: none; }
.navlinks a:hover::after,
.navlinks a[aria-current="page"]::after { right: 0; }

.pickers { gap: 8px; }

select {
  min-height: 36px;
  padding: 0 30px 0 10px;
  color: var(--text);
  background: rgba(14, 27, 64, 0.82);
  border: 1px solid rgba(128, 162, 241, 0.22);
  border-radius: 8px;
  font: inherit;
  font-size: 12px;
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: rgba(14, 27, 64, 0.82);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.menu-button > span:not(.sr-only) {
  display: block;
  height: 2px;
  margin: 4px 0;
  background: var(--text);
  border-radius: 2px;
}

main { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }

.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(480px, 1.12fr);
  gap: clamp(48px, 6vw, 88px);
  align-items: center;
  min-height: min(800px, calc(100vh - 76px));
  padding: 82px 0;
}

.hero-copy { position: relative; z-index: 2; }

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.eyebrow { display: flex; align-items: center; gap: 10px; }
.eyebrow::before {
  width: 22px;
  height: 1px;
  content: "";
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
}

h1, h2, h3, p { overflow-wrap: break-word; }

h1 {
  margin: 0;
  font-size: clamp(38px, 5.4vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

.hero-line {
  display: block;
  text-wrap: balance;
}

html[lang="zh-Hant"] .home-hero .hero-line { white-space: nowrap; }

h1 .hero-accent {
  color: transparent;
  background: linear-gradient(95deg, var(--hero-gradient-start) 0%, var(--hero-gradient-mid) 55%, var(--hero-gradient-end) 100%);
  background-clip: text;
  -webkit-background-clip: text;
}

.summary {
  max-width: 760px;
  margin: 26px 0 0;
  color: #b9c5e0;
  font-size: clamp(17px, 1.8vw, 21px);
  line-height: 1.75;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.02em;
  transition: transform 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}

.button:hover { transform: translateY(-2px); text-decoration: none; }

.button.primary {
  color: #00131b;
  background: linear-gradient(135deg, #39ebf5, #2d8cff);
  box-shadow: 0 14px 36px rgba(18, 173, 238, 0.24);
}

.button.secondary {
  color: var(--text);
  background: rgba(11, 25, 60, 0.7);
  border: 1px solid rgba(112, 158, 255, 0.34);
}

.button.secondary:hover { border-color: var(--cyan); box-shadow: 0 0 28px rgba(18, 217, 238, 0.12); }

.trust-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  padding: 0;
  margin: 32px 0 0;
  color: var(--muted);
  list-style: none;
  font-size: 12px;
}

.trust-list li { display: flex; align-items: center; gap: 8px; }
.trust-list li::before {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  content: "";
}

.hero-visual {
  position: relative;
  min-width: 0;
  padding: 12px;
  background: linear-gradient(145deg, rgba(17, 41, 96, 0.9), rgba(4, 10, 28, 0.94));
  border: 1px solid rgba(53, 130, 255, 0.42);
  border-radius: 30px;
  box-shadow: 0 42px 100px rgba(0, 0, 0, 0.54), 0 0 70px rgba(29, 93, 235, 0.12);
  transform: perspective(1200px) rotateY(-4deg) rotateX(1deg);
}

.hero-visual::before {
  position: absolute;
  inset: -1px;
  z-index: -1;
  border-radius: inherit;
  content: "";
  background: linear-gradient(125deg, rgba(20, 225, 244, 0.62), transparent 38%, rgba(47, 112, 255, 0.52));
  filter: blur(12px);
  opacity: 0.34;
}

.visual-glow {
  position: absolute;
  right: 8%;
  top: -8%;
  width: 100px;
  height: 100px;
  border: 1px solid rgba(18, 217, 238, 0.4);
  border-radius: 50%;
  box-shadow: 0 0 70px rgba(18, 217, 238, 0.28), inset 0 0 30px rgba(18, 217, 238, 0.14);
}

.live-mix-image {
  display: block;
  width: 100%;
  min-height: 340px;
  object-fit: cover;
  border: 1px solid rgba(45, 112, 255, 0.42);
  border-radius: 20px;
}

.signal-card {
  position: absolute;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1px 8px;
  min-width: 126px;
  padding: 11px 14px;
  background: rgba(2, 7, 22, 0.84);
  border: 1px solid rgba(109, 152, 244, 0.28);
  border-radius: 12px;
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(18px);
}

.signal-card span {
  grid-row: 1 / 3;
  align-self: center;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 14px var(--cyan);
}

.signal-card b { font-size: 11px; letter-spacing: 0.08em; }
.signal-card small { color: var(--muted); font-size: 9px; }
.signal-card-a { left: -26px; top: 16%; }
.signal-card-b { right: -24px; bottom: 14%; }

.intro-band {
  display: grid;
  grid-template-columns: 0.62fr 1fr;
  gap: 20px 60px;
  align-items: start;
  padding: 92px 0 72px;
  border-top: 1px solid var(--line);
}

.intro-band .section-kicker { grid-column: 1 / -1; margin-bottom: 0; }
.intro-band h2 {
  margin: 0;
  font-size: clamp(31px, 4.5vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.intro-band > p:last-child {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding-bottom: 96px;
}

.feature-card {
  position: relative;
  min-height: 300px;
  padding: clamp(26px, 4vw, 42px);
  overflow: hidden;
  background: linear-gradient(145deg, rgba(9, 20, 52, 0.84), rgba(5, 10, 29, 0.88));
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.2);
}

.feature-card::after {
  position: absolute;
  right: -65px;
  bottom: -85px;
  width: 190px;
  height: 190px;
  border: 1px solid rgba(39, 111, 255, 0.22);
  border-radius: 50%;
  content: "";
  box-shadow: 0 0 60px rgba(21, 95, 238, 0.12);
}

.feature-card.featured { border-color: rgba(18, 217, 238, 0.32); }
.feature-number { position: absolute; right: 24px; top: 20px; color: rgba(153, 178, 234, 0.4); font-size: 12px; font-weight: 800; }

.feature-card h2 { margin: 30px 0 12px; font-size: 27px; }
.feature-card p { max-width: 470px; margin: 0; color: var(--muted); font-size: 16px; line-height: 1.72; }

.feature-icon { position: relative; width: 52px; height: 52px; }
.feature-icon::before {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(18, 217, 238, 0.38);
  border-radius: 15px;
  content: "";
  background: rgba(14, 65, 112, 0.18);
  box-shadow: inset 0 0 22px rgba(18, 217, 238, 0.08), 0 0 28px rgba(18, 217, 238, 0.08);
}

.connection-icon i { position: absolute; z-index: 1; width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.connection-icon i:nth-child(1) { left: 22px; top: 10px; }
.connection-icon i:nth-child(2) { left: 11px; bottom: 11px; }
.connection-icon i:nth-child(3) { right: 11px; bottom: 11px; }
.connection-icon::after { position: absolute; z-index: 1; inset: 15px 14px 13px; content: ""; border-left: 1px solid var(--cyan); border-right: 1px solid var(--cyan); transform: perspective(12px) rotateX(-18deg); }

.grid-icon { display: grid; grid-template-columns: repeat(2, 12px); grid-template-rows: repeat(2, 12px); gap: 4px; padding: 10px; }
.grid-icon i { z-index: 1; border: 1px solid var(--cyan); border-radius: 2px; background: rgba(18, 217, 238, 0.12); }

.protocol-icon i { position: absolute; z-index: 1; top: 23px; width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); }
.protocol-icon i:nth-child(1) { left: 10px; }.protocol-icon i:nth-child(2) { left: 23px; }.protocol-icon i:nth-child(3) { right: 10px; }
.protocol-icon::after { position: absolute; z-index: 1; left: 13px; right: 13px; top: 26px; height: 1px; background: var(--cyan); content: ""; }

.playback-icon i { position: absolute; z-index: 1; left: 21px; top: 17px; width: 0; height: 0; border-top: 9px solid transparent; border-bottom: 9px solid transparent; border-left: 14px solid var(--cyan); }

.compatibility-band {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(420px, 1.2fr);
  gap: 32px 60px;
  align-items: center;
  margin-bottom: 96px;
  padding: clamp(30px, 5vw, 54px);
  background: linear-gradient(120deg, rgba(7, 21, 56, 0.88), rgba(8, 13, 35, 0.8));
  border: 1px solid var(--line);
  border-radius: 20px;
}

.compatibility-band h2 { margin: 0; font-size: clamp(27px, 3.5vw, 42px); line-height: 1.2; }
.compatibility-items { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; }
.compatibility-items span { padding: 12px 16px; color: #dce6ff; background: rgba(14, 34, 79, 0.72); border: 1px solid rgba(102, 148, 250, 0.26); border-radius: 10px; font-size: 13px; font-weight: 750; }
.legal-note { grid-column: 1 / -1; margin: 0; color: #7f8dad; font-size: 12px; line-height: 1.65; }

.closing-cta {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: center;
  margin-bottom: 110px;
  padding: 28px;
  background: rgba(7, 15, 42, 0.64);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.closing-cta img { border-radius: 22px; box-shadow: 0 0 34px rgba(18, 217, 238, 0.16); }
.closing-cta .section-kicker { margin-bottom: 8px; }
.closing-cta h2 { margin: 0; font-size: clamp(24px, 3vw, 36px); }

.inner-page { padding: 76px 0 110px; }
.page-hero { max-width: 880px; padding: 24px 0 56px; }
.page-hero h1 { font-size: clamp(44px, 7vw, 78px); }

.article-card {
  max-width: 940px;
  padding: clamp(24px, 5vw, 52px);
  background: linear-gradient(145deg, var(--panel), var(--panel-strong));
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.26);
}

.meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 44px;
}
.meta div { display: grid; gap: 5px; padding: 16px; background: rgba(9, 25, 62, 0.68); border: 1px solid rgba(99, 143, 233, 0.18); border-radius: 10px; }
.meta span { color: var(--muted); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; }
.meta strong { font-size: 14px; }

.article-card section { padding: 28px 0; border-top: 1px solid var(--line); }
.article-card section:first-of-type { border-top: 0; }
.article-card h2 { margin: 0 0 15px; font-size: 26px; }
.article-card p,
.article-card li { color: #bac5dd; font-size: 16px; line-height: 1.8; }
.article-card p { margin: 10px 0; }
.article-card ul { margin: 0; padding-left: 22px; }
.article-card li + li { margin-top: 8px; }

.guide-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.guide-card { position: relative; min-height: 260px; padding: clamp(26px, 4vw, 42px); background: linear-gradient(145deg, rgba(9, 21, 55, 0.86), rgba(4, 10, 29, 0.9)); border: 1px solid var(--line); border-radius: 18px; }
.guide-card > span { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; color: #00131b; background: linear-gradient(135deg, var(--cyan), #3d8cff); border-radius: 10px; font-size: 12px; font-weight: 900; }
.guide-card h2 { margin: 28px 0 12px; font-size: 28px; }
.guide-card p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.75; }
.guide-note { grid-column: 1 / -1; padding: 24px; color: #aab7d5; background: rgba(10, 24, 58, 0.62); border: 1px solid var(--line); border-radius: 14px; line-height: 1.7; }

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 92px;
  padding: 24px max(24px, calc((100vw - var(--max)) / 2));
  color: #7784a3;
  background: #020510;
  border-top: 1px solid rgba(100, 142, 230, 0.14);
  font-size: 12px;
}
.footer nav { display: flex; gap: 20px; }
.footer a { color: #aebbd8; }

:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

@media (max-width: 1020px) {
  .menu-button { display: block; margin-left: auto; }
  .topbar-controls {
    position: absolute;
    top: calc(100% + 1px);
    left: 16px;
    right: 16px;
    display: none;
    align-items: stretch;
    padding: 18px;
    background: rgba(3, 8, 24, 0.96);
    border: 1px solid var(--line);
    border-radius: 0 0 14px 14px;
    box-shadow: 0 28px 60px rgba(0, 0, 0, 0.46);
  }
  .topbar-controls.is-open { display: grid; gap: 16px; }
  .navlinks { align-items: stretch; justify-content: space-between; gap: 10px; }
  .pickers { justify-content: flex-end; }
  .home-hero { grid-template-columns: 1fr; min-height: auto; padding: 70px 0 96px; }
  .hero-copy { max-width: 780px; }
  .hero-visual { width: min(820px, 94%); margin: 0 auto; transform: none; }
}

@media (max-width: 720px) {
  main { width: min(100% - 28px, var(--max)); }
  .topbar { min-height: 68px; padding-inline: 16px; }
  .brand small { display: none; }
  .topbar-controls { left: 8px; right: 8px; }
  .navlinks { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .navlinks a { padding: 11px 8px; background: rgba(11, 25, 60, 0.58); border-radius: 8px; text-align: center; }
  .navlinks a::after { display: none; }
  .pickers { justify-content: stretch; }
  .pickers label { flex: 1; }
  select { width: 100%; }
  .home-hero { gap: 52px; padding-top: 52px; }
  h1 { font-size: clamp(34px, 10.5vw, 56px); }
  .live-mix-image { min-height: 240px; }
  .signal-card { display: none; }
  .intro-band { grid-template-columns: 1fr; padding: 68px 0 54px; }
  .feature-grid,
  .guide-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 260px; }
  .compatibility-band { grid-template-columns: 1fr; margin-bottom: 66px; padding: 26px; }
  .compatibility-items { justify-content: flex-start; }
  .closing-cta { grid-template-columns: auto 1fr; margin-bottom: 72px; padding-inline: 0; }
  .closing-cta img { width: 70px; height: 70px; }
  .closing-cta .button { grid-column: 1 / -1; }
  .inner-page { padding-top: 52px; }
  .page-hero { padding-bottom: 40px; }
  .meta { grid-template-columns: 1fr; }
  .article-card { padding: 24px; }
  .footer { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #eef4ff;
    --bg-soft: #f7f9ff;
    --panel: rgba(255, 255, 255, 0.86);
    --panel-strong: rgba(246, 249, 255, 0.96);
    --line: rgba(38, 82, 170, 0.17);
    --text: #071432;
    --muted: #54617d;
    --cyan: #00758c;
    --blue: #1d58b7;
    --hero-gradient-start: #123b62;
    --hero-gradient-mid: #007e9a;
    --hero-gradient-end: #2457b2;
    --shadow: rgba(30, 54, 99, 0.16);
  }
  :root:not([data-theme="dark"]) body { background: radial-gradient(circle at 80% 8%, rgba(47, 109, 240, 0.14), transparent 30rem), linear-gradient(180deg, #f8fbff, #edf3ff); }
  :root:not([data-theme="dark"]) .topbar { background: rgba(246, 250, 255, 0.8); }
  :root:not([data-theme="dark"]) .navlinks a { color: #344566; }
  :root:not([data-theme="dark"]) .navlinks a:hover,
  :root:not([data-theme="dark"]) .navlinks a[aria-current="page"] { color: #071432; }
  :root:not([data-theme="dark"]) select { color: #0d1c3d; background: rgba(255, 255, 255, 0.84); }
  :root:not([data-theme="dark"]) .button.secondary { color: #102247; background: rgba(255, 255, 255, 0.78); border-color: rgba(31, 85, 181, 0.3); }
  :root:not([data-theme="dark"]) .topbar-controls.is-open { background: rgba(246, 250, 255, 0.97); }
  :root:not([data-theme="dark"]) .topbar-controls.is-open .navlinks a { color: #263b62; background: rgba(224, 234, 252, 0.84); }
  :root:not([data-theme="dark"]) .guide-note { color: #435372; background: rgba(231, 239, 255, 0.82); }
  :root:not([data-theme="dark"]) .summary,
  :root:not([data-theme="dark"]) .intro-band > p:last-child,
  :root:not([data-theme="dark"]) .feature-card p,
  :root:not([data-theme="dark"]) .guide-card p,
  :root:not([data-theme="dark"]) .article-card p,
  :root:not([data-theme="dark"]) .article-card li { color: #53617e; }
  :root:not([data-theme="dark"]) .feature-card,
  :root:not([data-theme="dark"]) .guide-card,
  :root:not([data-theme="dark"]) .compatibility-band { background: rgba(255, 255, 255, 0.72); }
  :root:not([data-theme="dark"]) .compatibility-items span,
  :root:not([data-theme="dark"]) .meta div { color: #17284f; background: rgba(230, 239, 255, 0.8); }
  :root:not([data-theme="dark"]) .legal-note { color: #53617d; }
  :root:not([data-theme="dark"]) .footer { color: #53617d; background: #e7eefc; }
  :root:not([data-theme="dark"]) .footer a { color: #36527c; }
}

:root[data-theme="light"] {
  --bg: #eef4ff;
  --bg-soft: #f7f9ff;
  --panel: rgba(255, 255, 255, 0.86);
  --panel-strong: rgba(246, 249, 255, 0.96);
  --line: rgba(38, 82, 170, 0.17);
  --text: #071432;
  --muted: #54617d;
  --cyan: #00758c;
  --blue: #1d58b7;
  --hero-gradient-start: #123b62;
  --hero-gradient-mid: #007e9a;
  --hero-gradient-end: #2457b2;
  --shadow: rgba(30, 54, 99, 0.16);
}

:root[data-theme="light"] body { background: radial-gradient(circle at 80% 8%, rgba(47, 109, 240, 0.14), transparent 30rem), linear-gradient(180deg, #f8fbff, #edf3ff); }
:root[data-theme="light"] .topbar { background: rgba(246, 250, 255, 0.8); }
:root[data-theme="light"] .navlinks a { color: #344566; }
:root[data-theme="light"] .navlinks a:hover,
:root[data-theme="light"] .navlinks a[aria-current="page"] { color: #071432; }
:root[data-theme="light"] select { color: #0d1c3d; background: rgba(255, 255, 255, 0.84); }
:root[data-theme="light"] .button.secondary { color: #102247; background: rgba(255, 255, 255, 0.78); border-color: rgba(31, 85, 181, 0.3); }
:root[data-theme="light"] .topbar-controls.is-open { background: rgba(246, 250, 255, 0.97); }
:root[data-theme="light"] .topbar-controls.is-open .navlinks a { color: #263b62; background: rgba(224, 234, 252, 0.84); }
:root[data-theme="light"] .guide-note { color: #435372; background: rgba(231, 239, 255, 0.82); }
:root[data-theme="light"] .summary,
:root[data-theme="light"] .intro-band > p:last-child,
:root[data-theme="light"] .feature-card p,
:root[data-theme="light"] .guide-card p,
:root[data-theme="light"] .article-card p,
:root[data-theme="light"] .article-card li { color: #53617e; }
:root[data-theme="light"] .feature-card,
:root[data-theme="light"] .guide-card,
:root[data-theme="light"] .compatibility-band { background: rgba(255, 255, 255, 0.72); }
:root[data-theme="light"] .compatibility-items span,
:root[data-theme="light"] .meta div { color: #17284f; background: rgba(230, 239, 255, 0.8); }
:root[data-theme="light"] .legal-note { color: #53617d; }
:root[data-theme="light"] .footer { color: #53617d; background: #e7eefc; }
:root[data-theme="light"] .footer a { color: #36527c; }