/* TDesk 产品页 — 对齐桌面端主题变量 */
:root,
[data-theme="dark"] {
  color-scheme: dark;
  --accent: #3d7bff;
  --accent-hover: #2f6af0;
  --accent-soft: rgba(61, 123, 255, 0.18);
  --accent-soft-text: #9ec0ff;
  --accent-glow: rgba(61, 123, 255, 0.35);
  --accent-gradient: linear-gradient(90deg, #2f6fff 0%, #7b5cff 100%);
  --brand-name-gradient: linear-gradient(145deg, #4f7cff, #9db4ff);
  --bg: #070a12;
  --bg-elevated: #121826;
  --panel: #101622;
  --sidebar: #0a0e18;
  --border: rgba(148, 163, 184, 0.1);
  --border-strong: rgba(148, 163, 184, 0.16);
  --text: #f1f4fb;
  --muted: #8b93a7;
  --success: #3dcf8a;
  --input-bg: #0b101b;
  --hover-bg: rgba(255, 255, 255, 0.04);
  --hover-bg-strong: rgba(255, 255, 255, 0.08);
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  --app-bg:
    radial-gradient(ellipse 55% 40% at 12% 0%, rgba(61, 123, 255, 0.1), transparent 60%),
    radial-gradient(ellipse 45% 35% at 88% 8%, rgba(123, 92, 255, 0.06), transparent 55%),
    linear-gradient(180deg, #0a0e18 0%, #070a12 100%);
  --status-pill-bg: rgba(61, 207, 138, 0.1);
  --status-pill-text: #7dd9ae;
  --status-pill-border: rgba(61, 207, 138, 0.16);
  --header-bg: rgba(7, 10, 18, 0.72);
  --header-scrolled: rgba(10, 14, 24, 0.9);
  --code-bg: #0b101b;
  --code-fg: #d8e8f8;
  --radius: 14px;
  --radius-sm: 8px;
  --max: 1220px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "Cascadia Mono", "Consolas", ui-monospace, monospace;
  --purple: #8b6cff;
  --purple-soft: rgba(139, 108, 255, 0.18);
  --warn-bg: rgba(245, 158, 11, 0.1);
  --warn-text: #e0b35a;
  --danger: #e57373;
  --icon-btn-bg: rgba(255, 255, 255, 0.04);
  --icon-btn-hover: rgba(255, 255, 255, 0.08);
  --switch-off: #2a3140;
  --card-sheen: rgba(255, 255, 255, 0.06);
  --device-id: #f5f7fc;
  --placeholder: #5c6578;
}

[data-theme="light"] {
  color-scheme: light;
  --accent: #1677ff;
  --accent-hover: #0958d9;
  --accent-soft: rgba(22, 119, 255, 0.1);
  --accent-soft-text: #1677ff;
  --accent-glow: rgba(22, 119, 255, 0.2);
  --accent-gradient: linear-gradient(90deg, #1677ff 0%, #4096ff 100%);
  --brand-name-gradient: linear-gradient(145deg, #1677ff, #4096ff);
  --bg: #f0f2f5;
  --bg-elevated: #ffffff;
  --panel: #ffffff;
  --sidebar: #f5f7fb;
  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.12);
  --text: #1f2329;
  --muted: #8b95a7;
  --success: #52c41a;
  --input-bg: #f7f8fa;
  --hover-bg: rgba(15, 23, 42, 0.035);
  --hover-bg-strong: rgba(15, 23, 42, 0.06);
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  --app-bg: linear-gradient(180deg, #f5f7fb 0%, #eef1f6 100%);
  --status-pill-bg: rgba(82, 196, 26, 0.1);
  --status-pill-text: #389e0d;
  --status-pill-border: rgba(82, 196, 26, 0.16);
  --header-bg: rgba(245, 247, 251, 0.55);
  --header-scrolled: rgba(255, 255, 255, 0.9);
  --code-bg: #0b1f33;
  --code-fg: #d8e8f8;
  --purple: #722ed1;
  --purple-soft: rgba(114, 46, 209, 0.1);
  --warn-bg: #fff7e6;
  --warn-text: #d48806;
  --danger: #ff4d4f;
  --icon-btn-bg: #f5f6f8;
  --icon-btn-hover: #eef0f3;
  --switch-off: #d9dce3;
  --card-sheen: transparent;
  --device-id: #1f2329;
  --placeholder: #a0a7b5;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: rgba(148, 163, 184, 0.38) transparent;
}

html::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

html::-webkit-scrollbar-track {
  background: transparent;
}

html::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.32);
  border-radius: 999px;
}

html::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.5);
}

html[data-theme="light"] {
  scrollbar-color: rgba(15, 23, 42, 0.28) transparent;
}

html[data-theme="light"]::-webkit-scrollbar-thumb {
  background: rgba(15, 23, 42, 0.22);
}

html[data-theme="light"]::-webkit-scrollbar-thumb:hover {
  background: rgba(15, 23, 42, 0.38);
}

body {
  margin: 0;
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  background: var(--app-bg);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.25s ease, color 0.25s ease;
}

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

a {
  color: var(--accent-soft-text);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--accent-soft);
  color: var(--accent-soft-text);
  padding: 0.12em 0.4em;
  border-radius: 6px;
}

.atmosphere {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(color-mix(in srgb, var(--text) 4%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--text) 4%, transparent) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 10%, black 15%, transparent 70%);
  animation: grid-drift 28s linear infinite;
}

@keyframes grid-drift {
  from {
    background-position: 0 0, 0 0;
  }
  to {
    background-position: 48px 24px, 24px 48px;
  }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  padding: 0.75rem max(1.25rem, calc((100% - var(--max)) / 2));
  backdrop-filter: blur(14px);
  background: var(--header-bg);
  border-bottom: 1px solid transparent;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.site-header.is-scrolled {
  background: var(--header-scrolled);
  border-bottom-color: var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.1rem;
}

.brand-logo {
  width: 28px;
  height: 28px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: 7px;
}

.brand-logo-light {
  display: none;
}

[data-theme="light"] .brand-logo-dark {
  display: none;
}

[data-theme="light"] .brand-logo-light {
  display: block;
}

.nav {
  display: flex;
  gap: 1.05rem;
  margin-left: 0.5rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

.nav a:hover {
  color: var(--text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-left: auto;
  margin-right: 0;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.1rem;
}

.lang-btn {
  border: none;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1;
  padding: 0.35rem 0.45rem;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.lang-btn:hover {
  color: var(--text);
  background: var(--hover-bg);
}

.lang-btn[aria-pressed="true"] {
  background: var(--accent-soft);
  color: var(--accent-soft-text);
}

.theme-switch {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
}

.theme-switch-track {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  width: 46px;
  height: 26px;
  padding: 2px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--hover-bg);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.theme-switch:hover .theme-switch-track {
  background: var(--hover-bg-strong);
}

.theme-switch-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  background: var(--bg-elevated);
  color: var(--accent-soft-text);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.12);
  transition: transform 0.2s ease;
}

.theme-switch-thumb .icon-sun {
  display: none;
}

.theme-switch-thumb .icon-moon {
  display: block;
}

[data-theme="light"] .theme-switch-thumb .icon-sun {
  display: block;
}

[data-theme="light"] .theme-switch-thumb .icon-moon {
  display: none;
}

.theme-switch[data-checked="true"] .theme-switch-thumb {
  transform: translateX(20px);
}

.theme-switch-icon {
  justify-self: center;
  display: inline-flex;
  color: var(--muted);
  pointer-events: none;
}

.theme-switch-icon.light {
  opacity: 0.9;
}

.theme-switch-icon.dark {
  opacity: 0.55;
}

.theme-switch[data-checked="true"] .theme-switch-icon.light {
  opacity: 0.45;
}

.theme-switch[data-checked="true"] .theme-switch-icon.dark {
  opacity: 0.95;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  border-radius: 6px;
  padding: 0.38rem 0.8rem;
  font-weight: 600;
  font-size: 0.875rem;
  line-height: 1.2;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease,
    box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-solid {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-solid:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-gradient {
  background: var(--accent-gradient);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 6px 16px var(--accent-glow);
}

.btn-gradient:hover {
  filter: brightness(1.05);
  box-shadow: 0 8px 20px var(--accent-glow);
}

.btn-ghost {
  background: var(--hover-bg);
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-ghost:hover {
  background: var(--hover-bg-strong);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  color: var(--accent-soft-text);
}

.btn-lg {
  padding: 0.52rem 1.05rem;
  font-size: 0.95rem;
  border-radius: 7px;
}

.hero {
  position: relative;
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
  padding: 2rem 0 2.75rem;
}

.hero-glow {
  pointer-events: none;
  position: absolute;
  inset: -10% -5% auto;
  height: 70%;
  background:
    radial-gradient(ellipse 45% 55% at 18% 30%, rgba(61, 123, 255, 0.22), transparent 70%),
    radial-gradient(ellipse 40% 50% at 78% 20%, rgba(123, 92, 255, 0.16), transparent 68%);
  z-index: 0;
  animation: float-in 1s ease both;
}

.hero-layout {
  position: relative;
  z-index: 1;
  width: min(1280px, 100%);
  margin: 0 0 0 max(0px, calc((100% - var(--max)) / 2));
  padding: 0 1.25rem 0 0;
  display: grid;
  grid-template-columns: minmax(300px, 420px) minmax(0, 1fr);
  gap: 1.5rem 1.8rem;
  align-items: center;
}

.hero-copy {
  animation: rise-in 0.8s ease both;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 0 0 2rem;
}

.brand-mark-logo {
  width: 80px;
  height: 80px;
  object-fit: contain;
  flex-shrink: 0;
  filter: drop-shadow(0 6px 16px rgba(61, 123, 255, 0.28));
}

.brand-mark-logo-light {
  display: none;
}

[data-theme="light"] .brand-mark-logo-dark {
  display: none;
}

[data-theme="light"] .brand-mark-logo-light {
  display: block;
  filter: none;
}

.brand-mark-name {
  font-size: 3.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  background: var(--brand-name-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero h1 {
  margin: 0 0 0.85rem;
  font-weight: 700;
  font-size: clamp(1.18rem, 2.2vw, 1.55rem);
  letter-spacing: -0.02em;
  line-height: 1.35;
  color: var(--text);
  max-width: none;
}

.lede {
  margin: 0 0 1.5rem;
  color: color-mix(in srgb, var(--muted) 88%, var(--text));
  max-width: none;
  font-size: 0.98rem;
  line-height: 1.6;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 1.35rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem 0.9rem;
  width: 100%;
  max-width: none;
}

.demo-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.4;
  text-align: right;
  padding-right: 0.15rem;
  letter-spacing: 0.01em;
}

.hero-demo {
  min-width: 0;
  width: 100%;
  max-width: 820px;
  justify-self: end;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  animation: float-in 1s ease both;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: var(--status-pill-bg);
  color: var(--status-pill-text);
  border: 1px solid var(--status-pill-border);
  font-size: 0.82rem;
  font-weight: 600;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 22%, transparent);
  animation: status-dot-pulse 2.2s ease-in-out infinite;
}

@keyframes status-dot-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 22%, transparent);
  }
  50% {
    box-shadow: 0 0 0 5px color-mix(in srgb, var(--success) 10%, transparent);
  }
}

.meta-note {
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.35;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float-in {
  from {
    opacity: 0;
    transform: translateY(28px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes gentle-float {
  0%,
  100% {
    transform: scale(1) translateY(0);
  }
  50% {
    transform: scale(1.025) translateY(-6px);
  }
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 4.25rem 1.25rem;
}

.section-head {
  max-width: 36rem;
  margin-bottom: 1.75rem;
}

.section-head-wide {
  max-width: 42rem;
}

.section-kicker {
  margin: 0 0 0.45rem;
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-soft-text);
}

.section-head h2 {
  margin: 0 0 0.55rem;
  font-size: clamp(1.5rem, 2.8vw, 1.9rem);
  letter-spacing: -0.02em;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.feature-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.feature-grid-highlights {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.05rem;
}

.feature-card {
  --feature-tone: var(--accent);
  --feature-tone-soft: var(--accent-soft);
  --feature-tone-text: var(--accent-soft-text);
  --feature-tone-glow: var(--accent-glow);
  position: relative;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.3rem 1.35rem;
  box-shadow: var(--shadow);
  transition: border-color 0.22s ease, transform 0.22s ease, box-shadow 0.22s ease;
}

.feature-grid-highlights .feature-card {
  padding: 1.35rem 1.35rem 1.45rem;
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

.feature-index {
  position: absolute;
  top: 1rem;
  right: 1.1rem;
  z-index: 1;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  color: color-mix(in srgb, var(--feature-tone-text) 72%, var(--muted));
  opacity: 0.85;
}

.feature-titles {
  min-width: 0;
  display: grid;
  gap: 0.2rem;
}

.feature-tag {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--feature-tone-text);
}

.feature-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--card-sheen), transparent);
  pointer-events: none;
}

.feature-card::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -18%;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--feature-tone-glow), transparent 68%);
  opacity: 0.45;
  pointer-events: none;
  transition: opacity 0.22s ease;
}

.feature-card:hover {
  border-color: color-mix(in srgb, var(--feature-tone) 42%, var(--border));
  transform: translateY(-3px);
  box-shadow:
    var(--shadow),
    0 0 0 1px color-mix(in srgb, var(--feature-tone) 12%, transparent);
}

.feature-card:hover::after {
  opacity: 0.7;
}

.feature-card[data-tone="blue"] {
  --feature-tone: #3d7bff;
  --feature-tone-soft: rgba(61, 123, 255, 0.16);
  --feature-tone-text: #9ec0ff;
  --feature-tone-glow: rgba(61, 123, 255, 0.28);
}

.feature-card[data-tone="purple"] {
  --feature-tone: #8b6cff;
  --feature-tone-soft: rgba(139, 108, 255, 0.16);
  --feature-tone-text: #c4b5ff;
  --feature-tone-glow: rgba(139, 108, 255, 0.28);
}

.feature-card[data-tone="teal"] {
  --feature-tone: #2bb8a6;
  --feature-tone-soft: rgba(43, 184, 166, 0.15);
  --feature-tone-text: #7de0d2;
  --feature-tone-glow: rgba(43, 184, 166, 0.26);
}

.feature-card[data-tone="amber"] {
  --feature-tone: #e0a03a;
  --feature-tone-soft: rgba(224, 160, 58, 0.14);
  --feature-tone-text: #efc57a;
  --feature-tone-glow: rgba(224, 160, 58, 0.24);
}

.feature-card[data-tone="green"] {
  --feature-tone: #3dcf8a;
  --feature-tone-soft: rgba(61, 207, 138, 0.14);
  --feature-tone-text: #7dd9ae;
  --feature-tone-glow: rgba(61, 207, 138, 0.24);
}

.feature-card[data-tone="rose"] {
  --feature-tone: #e06b8a;
  --feature-tone-soft: rgba(224, 107, 138, 0.14);
  --feature-tone-text: #f0a0b4;
  --feature-tone-glow: rgba(224, 107, 138, 0.24);
}

[data-theme="light"] .feature-card[data-tone="blue"] {
  --feature-tone: #1677ff;
  --feature-tone-soft: rgba(22, 119, 255, 0.1);
  --feature-tone-text: #1677ff;
  --feature-tone-glow: rgba(22, 119, 255, 0.16);
}

[data-theme="light"] .feature-card[data-tone="purple"] {
  --feature-tone: #722ed1;
  --feature-tone-soft: rgba(114, 46, 209, 0.1);
  --feature-tone-text: #722ed1;
  --feature-tone-glow: rgba(114, 46, 209, 0.14);
}

[data-theme="light"] .feature-card[data-tone="teal"] {
  --feature-tone: #0d9488;
  --feature-tone-soft: rgba(13, 148, 136, 0.1);
  --feature-tone-text: #0d9488;
  --feature-tone-glow: rgba(13, 148, 136, 0.14);
}

[data-theme="light"] .feature-card[data-tone="amber"] {
  --feature-tone: #d48806;
  --feature-tone-soft: rgba(212, 136, 6, 0.1);
  --feature-tone-text: #d48806;
  --feature-tone-glow: rgba(212, 136, 6, 0.14);
}

[data-theme="light"] .feature-card[data-tone="green"] {
  --feature-tone: #389e0d;
  --feature-tone-soft: rgba(82, 196, 26, 0.1);
  --feature-tone-text: #389e0d;
  --feature-tone-glow: rgba(82, 196, 26, 0.14);
}

[data-theme="light"] .feature-card[data-tone="rose"] {
  --feature-tone: #c41d7f;
  --feature-tone-soft: rgba(196, 29, 127, 0.1);
  --feature-tone-text: #c41d7f;
  --feature-tone-glow: rgba(196, 29, 127, 0.14);
}

.feature-head {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.7rem;
  min-width: 0;
  padding-right: 1.6rem;
}

.feature-icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  border-radius: 11px;
  background: var(--feature-tone-soft);
  color: var(--feature-tone-text);
  box-shadow: 0 0 18px color-mix(in srgb, var(--feature-tone) 22%, transparent);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.feature-card:hover .feature-icon {
  transform: scale(1.04);
  box-shadow: 0 0 22px color-mix(in srgb, var(--feature-tone) 34%, transparent);
}

[data-theme="light"] .feature-icon {
  box-shadow: none;
}

.feature-card h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.3;
  min-width: 0;
}

.feature-card > p {
  position: relative;
  z-index: 1;
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
  flex: 1;
}

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

.step-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1.2rem 1.25rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.step-index {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--accent);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.steps h3 {
  margin: 0 0 0.3rem;
  font-size: 1.02rem;
}

.steps p {
  margin: 0;
  color: var(--muted);
}

.oss-panel {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 1.5rem;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.oss-label {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.86rem;
}

.oss-link {
  display: inline-block;
  font-weight: 700;
  font-size: clamp(1.02rem, 2.2vw, 1.28rem);
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
  word-break: break-all;
}

.oss-link:hover {
  color: var(--accent-soft-text);
}

.oss-clone {
  margin: 1rem 0 0;
}

.oss-clone code {
  display: block;
  padding: 0.85rem 1rem;
  background: var(--code-bg);
  color: var(--code-fg);
  border-radius: 10px;
  overflow-x: auto;
  white-space: nowrap;
}

.oss-aside {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  justify-content: center;
  align-items: flex-start;
}

.text-link {
  color: var(--muted);
  font-weight: 500;
  text-decoration: none;
}

.text-link:hover {
  color: var(--accent-soft-text);
}

.legal-block {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  background: var(--panel);
  border-radius: 0 var(--radius) var(--radius) 0;
  box-shadow: var(--shadow);
}

.legal-title {
  margin: 0 0 0.35rem;
  font-weight: 700;
  font-size: 1.15rem;
}

.legal-block p {
  margin: 0 0 0.7rem;
  color: var(--muted);
}

.legal-block p:last-child {
  margin-bottom: 0;
}

.legal-note {
  font-size: 0.9rem;
}

.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
  display: grid;
  gap: 0.65rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text);
  font-weight: 700;
}

.footer-brand img {
  border-radius: 6px;
}

.site-footer p {
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent-soft-text);
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .hero {
    min-height: 0;
    align-items: stretch;
    padding: 1.75rem 0 2.5rem;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    width: min(var(--max), 100%);
    margin: 0 auto;
    padding: 0 1.25rem;
  }

  .hero-copy {
    max-width: 40rem;
    padding-block: 0;
  }

  .hero h1 {
    max-width: none;
  }

  .hero-demo {
    justify-self: stretch;
  }

  .demo-note {
    text-align: left;
  }
}

@media (max-width: 1100px) {
  .feature-grid-highlights {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .nav {
    display: none;
  }

  .feature-grid,
  .feature-grid-highlights,
  .oss-panel {
    grid-template-columns: 1fr;
  }

  .demo-app {
    grid-template-columns: 72px 1fr;
  }

  .demo-nav-item span,
  .demo-status-text {
    display: none;
  }

  .demo-nav-item {
    justify-content: center;
    padding: 12px;
  }

  .demo-sidebar-foot {
    justify-content: center;
  }
}

@media (max-width: 560px) {
  .header-actions .btn-ghost {
    display: none;
  }

  .brand-mark-name {
    font-size: 3rem;
  }

  .cta-row .btn {
    width: 100%;
  }

  .lang-switch {
    order: -1;
  }

  .demo-device-id {
    font-size: 24px;
  }

  .demo-window {
    border-radius: 14px;
  }
}

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

  .atmosphere,
  .hero-copy,
  .hero-glow,
  .hero-demo,
  .reveal,
  .status-dot,
  .demo-status-dot {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ——— Interactive app demo (aligned with desktop UI) ——— */

.demo-window {
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  overflow: hidden;
  background: var(--bg);
  box-shadow:
    0 24px 64px rgba(0, 0, 0, 0.38),
    0 0 0 1px rgba(255, 255, 255, 0.03) inset;
}

[data-theme="light"] .demo-window {
  box-shadow: 0 20px 48px rgba(15, 23, 42, 0.12);
}

.demo-titlebar {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 36px;
  padding: 0 14px;
  background: color-mix(in srgb, var(--sidebar) 92%, #000);
  border-bottom: 1px solid var(--border);
}

.demo-traffic {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #3f4658;
}

.demo-traffic:nth-child(1) {
  background: #ff5f57;
}

.demo-traffic:nth-child(2) {
  background: #febc2e;
}

.demo-traffic:nth-child(3) {
  background: #28c840;
}

.demo-titlebar-label {
  margin-left: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
}

.demo-app {
  display: grid;
  grid-template-columns: 188px 1fr;
  height: min(72vh, 680px);
  min-height: 560px;
  background: var(--app-bg);
}

.demo-sidebar {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 12px;
  background: var(--sidebar);
  border-right: 1px solid var(--border);
  min-height: 0;
  overflow: hidden;
}

.demo-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.demo-nav-item {
  border: 1px solid transparent;
  background: transparent;
  text-align: left;
  padding: 11px 12px;
  border-radius: 12px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 10px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.demo-nav-item svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}

.demo-nav-item:hover {
  background: var(--hover-bg);
  color: var(--text);
}

.demo-nav-item.is-active {
  background: linear-gradient(90deg, rgba(47, 111, 255, 0.28), rgba(61, 123, 255, 0.14));
  color: #fff;
  font-weight: 600;
  border-color: rgba(61, 123, 255, 0.28);
  box-shadow: 0 0 24px rgba(61, 123, 255, 0.18);
}

[data-theme="light"] .demo-nav-item.is-active {
  background: rgba(22, 119, 255, 0.1);
  color: #1677ff;
  border-color: transparent;
  box-shadow: none;
}

.demo-sidebar-hero {
  flex: 1 1 auto;
  min-height: 100px;
  display: grid;
  place-items: end center;
  pointer-events: none;
  position: relative;
}

.demo-sidebar-hero img {
  width: min(100%, 168px);
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 10px 24px rgba(61, 123, 255, 0.22));
}

.demo-hero-light {
  display: none;
}

[data-theme="light"] .demo-hero-dark {
  display: none;
}

[data-theme="light"] .demo-hero-light {
  display: block;
  filter: drop-shadow(0 8px 18px rgba(22, 119, 255, 0.1));
}

.demo-sidebar-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 2px 2px 0;
}

.demo-status-line {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  font-size: 12px;
  color: var(--muted);
}

.demo-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3f4658;
  flex-shrink: 0;
}

.demo-status-line[data-tone="ok"] .demo-status-dot {
  background: var(--success);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 22%, transparent);
  animation: status-dot-pulse 2.2s ease-in-out infinite;
}

.demo-status-line[data-tone="off"] .demo-status-dot {
  background: #3f4658;
}

.demo-status-line[data-tone="busy"] .demo-status-dot {
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  animation: status-dot-pulse 1.1s ease-in-out infinite;
}

.demo-theme-switch {
  display: inline-flex;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
}

.demo-theme-track {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  width: 46px;
  height: 26px;
  padding: 2px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--hover-bg);
}

.demo-theme-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  background: var(--bg-elevated);
  color: var(--accent-soft-text);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.12);
  transition: transform 0.2s ease;
}

.demo-theme-thumb .icon-sun {
  display: none;
}

.demo-theme-thumb .icon-moon {
  display: block;
}

[data-theme="light"] .demo-theme-thumb .icon-sun {
  display: block;
}

[data-theme="light"] .demo-theme-thumb .icon-moon {
  display: none;
}

.demo-theme-switch[data-checked="true"] .demo-theme-thumb {
  transform: translateX(20px);
}

.demo-theme-icon {
  justify-self: center;
  display: inline-flex;
  color: var(--muted);
  pointer-events: none;
}

.demo-theme-icon.light {
  opacity: 0.9;
}

.demo-theme-icon.dark {
  opacity: 0.55;
}

.demo-theme-switch[data-checked="true"] .demo-theme-icon.light {
  opacity: 0.45;
}

.demo-theme-switch[data-checked="true"] .demo-theme-icon.dark {
  opacity: 0.95;
}

.demo-main {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border-top: none;
}

.demo-panel {
  height: 100%;
  min-height: 0;
}

.demo-panel-remote.is-active {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 12px;
  padding: 12px;
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

.demo-panel-settings {
  padding: 14px;
  height: 100%;
  overflow: auto;
}

.demo-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 0;
  position: relative;
  overflow: auto;
}

.demo-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--card-sheen), transparent);
  pointer-events: none;
}

.demo-card-settings {
  max-width: 520px;
}

.demo-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.demo-card-head-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.demo-badge {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
}

.demo-badge svg {
  width: 18px;
  height: 18px;
}

.demo-badge-blue {
  background: var(--accent-soft);
  color: var(--accent-soft-text);
  box-shadow: 0 0 20px rgba(61, 123, 255, 0.18);
}

.demo-badge-purple {
  background: var(--purple-soft);
  color: #c4b5ff;
  box-shadow: 0 0 20px rgba(139, 108, 255, 0.18);
}

[data-theme="light"] .demo-badge {
  border-radius: 999px;
  box-shadow: none;
}

[data-theme="light"] .demo-badge-purple {
  color: #722ed1;
}

.demo-card-title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.25;
}

.demo-card-sub {
  margin: 3px 0 0;
  font-size: 11px;
  color: var(--muted);
}

.demo-switch {
  width: 46px;
  height: 26px;
  border-radius: 999px;
  border: none;
  background: var(--switch-off);
  position: relative;
  flex-shrink: 0;
  cursor: pointer;
  transition: background 0.15s ease, box-shadow 0.15s ease;
  padding: 0;
}

.demo-switch.is-on {
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft), 0 0 18px var(--accent-glow);
}

.demo-switch::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.15s ease;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}

.demo-switch.is-on::after {
  transform: translateX(20px);
}

.demo-status-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 11px;
  border-radius: 10px;
  background: var(--status-pill-bg);
  color: var(--status-pill-text);
  font-size: 12px;
  border: 1px solid var(--status-pill-border);
}

.demo-status-bar.is-warn {
  background: var(--warn-bg);
  color: var(--warn-text);
  border-color: rgba(245, 158, 11, 0.2);
}

.demo-status-bar-icon {
  display: inline-flex;
  flex-shrink: 0;
}

.demo-status-bar-icon svg {
  width: 14px;
  height: 14px;
}

.demo-status-bar-icon.bolt svg {
  width: 13px;
  height: 13px;
}

.demo-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.demo-field-inline {
  flex-direction: row;
  align-items: center;
  gap: 12px;
}

.demo-field-label {
  font-size: 11px;
  font-weight: 650;
  color: var(--muted);
}

.demo-device-id {
  font-family: var(--mono);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.15;
  color: var(--device-id);
}

.demo-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.demo-row.between {
  justify-content: space-between;
}

.demo-field-box {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 40px;
  padding: 0 6px 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--input-bg);
}

.demo-field-text {
  flex: 1;
  min-width: 0;
  font-size: 12px;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.demo-field-text.mono {
  font-family: var(--mono);
  letter-spacing: 0.08em;
  font-size: 14px;
}

.demo-field-text.is-muted {
  color: var(--muted);
  font-family: var(--font);
  letter-spacing: 0;
  font-size: 12px;
  font-weight: 500;
}

.demo-field-edit {
  padding-left: 6px;
}

.demo-icon-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--icon-btn-bg);
  color: var(--muted);
  border: 1px solid var(--border);
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
  cursor: pointer;
  padding: 0;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.demo-icon-btn.ghost {
  border-color: transparent;
  background: transparent;
}

.demo-icon-btn:hover {
  background: var(--icon-btn-hover);
  color: var(--text);
  border-color: var(--border-strong);
}

.demo-icon-btn.ghost:hover {
  border-color: transparent;
}

.demo-icon-btn svg {
  width: 15px;
  height: 15px;
  grid-area: 1 / 1;
}

/* SVG 的 hidden IDL/属性不可靠，眼睛图标只用 class 切换 */
.demo-icon-btn svg.eye-off {
  display: none;
}

.demo-icon-btn.is-pw-visible svg.eye-on {
  display: none;
}

.demo-icon-btn.is-pw-visible svg.eye-off {
  display: block;
}

.demo-icon-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.demo-hint {
  margin: 0;
  font-size: 11px;
  color: color-mix(in srgb, var(--muted) 68%, transparent);
  line-height: 1.45;
}

.demo-card-host .demo-hint,
.demo-card-remote .demo-hint {
  display: none;
}

.demo-card-spacer {
  flex: 1;
  min-height: 4px;
}

.demo-secure {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(61, 123, 255, 0.18);
  background: linear-gradient(90deg, rgba(47, 111, 255, 0.14), rgba(16, 22, 34, 0.6));
  color: var(--accent-soft-text);
  font-size: 11px;
}

[data-theme="light"] .demo-secure {
  border-color: rgba(22, 119, 255, 0.12);
  background: rgba(22, 119, 255, 0.06);
  color: #1677ff;
}

.demo-secure-icon {
  display: inline-flex;
  color: var(--accent);
}

.demo-secure-icon svg,
.demo-secure-chevron svg {
  width: 14px;
  height: 14px;
}

.demo-secure-chevron {
  margin-left: auto;
  display: inline-flex;
  color: var(--muted);
}

.demo-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.demo-input-leading {
  position: absolute;
  left: 11px;
  width: 15px;
  height: 15px;
  color: var(--muted);
  pointer-events: none;
  display: inline-flex;
}

.demo-input-leading svg {
  width: 15px;
  height: 15px;
}

.demo-input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 40px 11px 38px;
  background: var(--input-bg);
  color: var(--text);
  outline: none;
  font: inherit;
  font-size: 13px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.demo-input.mono {
  font-family: var(--mono);
  letter-spacing: 0.08em;
}

.demo-input.bare {
  border: none;
  box-shadow: none;
  background: transparent;
  padding: 8px 6px;
  min-width: 0;
  flex: 1;
}

.demo-input::placeholder {
  color: var(--placeholder);
}

.demo-input:focus {
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.demo-input.bare:focus {
  box-shadow: none;
  border-color: transparent;
}

.demo-input-clear {
  position: absolute;
  right: 5px;
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
}

.demo-card-foot {
  display: flex;
  align-items: center;
  gap: 10px;
}

.demo-foot-label {
  font-size: 11px;
  color: var(--muted);
}

.demo-mode-select {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 11px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--input-bg);
  color: var(--text);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.demo-mode-select svg {
  width: 13px;
  height: 13px;
  color: var(--muted);
}

.demo-mode-select:hover {
  border-color: var(--border-strong);
  background: var(--hover-bg);
}

.demo-primary {
  width: 100%;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--accent-gradient);
  color: #fff;
  padding: 12px 18px;
  font: inherit;
  font-weight: 650;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  box-shadow: 0 10px 28px rgba(61, 123, 255, 0.32), 0 0 24px rgba(123, 92, 255, 0.18);
  transition: filter 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.demo-primary:hover:not(:disabled) {
  filter: brightness(1.05);
  transform: translateY(-1px);
}

.demo-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.demo-primary svg {
  width: 18px;
  height: 18px;
}

[data-theme="light"] .demo-primary {
  background: #1677ff;
  box-shadow: 0 8px 20px rgba(22, 119, 255, 0.28);
}

.demo-settings-grid {
  display: grid;
  gap: 14px;
  margin-top: 8px;
}

.demo-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.demo-chip {
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  border-radius: 10px;
  padding: 7px 12px;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.demo-chip:hover {
  background: var(--hover-bg);
  color: var(--text);
}

.demo-chip.is-active {
  background: linear-gradient(90deg, rgba(47, 111, 255, 0.28), rgba(61, 123, 255, 0.14));
  color: #fff;
  font-weight: 600;
  border-color: rgba(61, 123, 255, 0.28);
}

[data-theme="light"] .demo-chip.is-active {
  background: rgba(22, 119, 255, 0.1);
  color: #1677ff;
  border-color: transparent;
}

.demo-session {
  position: absolute;
  inset: 0;
  z-index: 5;
  background: var(--bg);
  display: flex;
  flex-direction: column;
}

.demo-session-stage {
  flex: 1;
  display: grid;
  place-items: center;
  position: relative;
  padding: 18px;
  background:
    radial-gradient(ellipse 50% 40% at 50% 30%, rgba(61, 123, 255, 0.12), transparent 70%),
    var(--bg);
}

.demo-session-screen {
  width: min(100%, 560px);
  aspect-ratio: 16 / 10;
  border-radius: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
  background: #0b1220;
  box-shadow: var(--shadow);
}

.demo-session-desktop {
  height: 100%;
  background:
    linear-gradient(135deg, #1a2744 0%, #0d1526 45%, #1b1340 100%);
  position: relative;
}

.demo-session-taskbar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 28px;
  background: rgba(0, 0, 0, 0.45);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.demo-session-hud {
  position: absolute;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  width: min(92%, 360px);
  text-align: center;
  padding: 14px 16px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}

.demo-session-title {
  margin: 0 0 4px;
  font-weight: 700;
  font-size: 14px;
}

.demo-session-desc {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 12px;
}

.demo-ghost-btn {
  border: 1px solid var(--border-strong);
  background: var(--hover-bg);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 14px;
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.demo-ghost-btn:hover {
  background: var(--hover-bg-strong);
}

.demo-toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%) translateY(8px);
  z-index: 40;
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.demo-toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.demo-panel[hidden],
.demo-session[hidden],
.demo-field-edit[hidden],
#demo-fixed-view[hidden],
.demo-toast[hidden] {
  display: none !important;
}

@media (max-width: 900px) {
  .demo-panel-remote.is-active {
    grid-template-columns: 1fr;
  }
}