:root {
  --navy-950: #06111f;
  --navy-900: #071827;
  --navy-850: #0b2136;
  --navy-800: #0f2a44;
  --ink-900: #0d1726;
  --ink-700: #26364d;
  --ink-600: #44546a;
  --muted: #6a7688;
  --line: #dfe7f1;
  --line-dark: rgba(154, 202, 219, 0.18);
  --surface: #ffffff;
  --surface-soft: #f5f8fc;
  --surface-blue: #eef8fb;
  --aqua: #24dfc3;
  --teal: #11a6a6;
  --blue: #3b82f6;
  --cyan: #5fe7ff;
  --green-soft: #dffbf5;
  --shadow-sm: 0 10px 28px rgba(10, 28, 48, 0.08);
  --shadow-md: 0 18px 48px rgba(10, 28, 48, 0.13);
  --shadow-dark: 0 24px 80px rgba(0, 0, 0, 0.32);
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-xl: 36px;
  --container: 1180px;
  --header-height: 74px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink-900);
  background: var(--surface-soft);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

img,
svg {
  max-width: 100%;
}

button,
input,
textarea {
  font: inherit;
}

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

p {
  margin: 0;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

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

.section {
  padding: 92px 0;
  position: relative;
}

.section.compact {
  padding: 64px 0;
}

.section-white {
  background: var(--surface);
}

.section-tint {
  background:
    radial-gradient(circle at 10% 20%, rgba(36, 223, 195, 0.13), transparent 28%),
    linear-gradient(180deg, #f8fbff 0%, #eef5fa 100%);
}

.section-dark {
  color: #eff8ff;
  background:
    radial-gradient(circle at 18% 22%, rgba(36, 223, 195, 0.22), transparent 30%),
    radial-gradient(circle at 82% 18%, rgba(59, 130, 246, 0.22), transparent 28%),
    linear-gradient(135deg, #071827 0%, #0b2136 58%, #06111f 100%);
  overflow: hidden;
}

.section-dark::before,
.hero::before,
.cta-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 72%);
}

.section-dark::after,
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.18;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,0.32) 0 1px, transparent 2px),
    radial-gradient(circle at 75% 70%, rgba(255,255,255,0.26) 0 1px, transparent 2px);
  background-size: 28px 28px, 34px 34px;
}

.section > .container,
.hero > .container,
.page-hero > .container {
  position: relative;
  z-index: 1;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 38px;
}

.section-heading.center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-eyebrow,
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 30px;
  padding: 6px 12px;
  border: 1px solid rgba(17, 166, 166, 0.22);
  border-radius: 999px;
  color: var(--teal);
  background: rgba(36, 223, 195, 0.08);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.section-dark .section-eyebrow,
.hero .kicker,
.page-hero.dark .kicker {
  color: #99fff0;
  border-color: rgba(128, 255, 238, 0.25);
  background: rgba(128, 255, 238, 0.08);
}

.section-heading h2 {
  margin-top: 14px;
  font-size: clamp(30px, 4vw, 48px);
}

.section-heading p {
  margin-top: 16px;
  color: var(--muted);
  font-size: 17px;
}

.section-dark .section-heading p,
.page-hero.dark p,
.hero p {
  color: rgba(237, 248, 255, 0.78);
}

.gradient-text {
  background: linear-gradient(90deg, #ffffff 0%, #96fff1 42%, #8db7ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: var(--header-height);
  color: #f8fbff;
  transition: background 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header.header-light,
.site-header.is-scrolled {
  color: var(--ink-900);
  background: rgba(255, 255, 255, 0.82);
  border-bottom-color: rgba(15, 42, 68, 0.08);
  box-shadow: 0 12px 34px rgba(14, 35, 58, 0.08);
  backdrop-filter: blur(16px);
}

.site-header.is-scrolled .brand-mark,
.site-header.header-light .brand-mark {
  box-shadow: 0 10px 26px rgba(17, 166, 166, 0.18);
}

.nav-inner {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
  font-weight: 800;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  color: #03131f;
  font-size: 16px;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, var(--aqua), #87efff 58%, #7da8ff);
  box-shadow: 0 12px 34px rgba(36, 223, 195, 0.22);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-size: 16px;
  letter-spacing: -0.02em;
}

.brand-sub {
  margin-top: 3px;
  color: currentColor;
  opacity: 0.58;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav-link {
  position: relative;
  padding: 10px 13px;
  border-radius: 999px;
  color: currentColor;
  opacity: 0.78;
  font-size: 14px;
  font-weight: 650;
  transition: opacity 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  opacity: 1;
  background: rgba(36, 223, 195, 0.12);
  color: var(--aqua);
}

.site-header.header-light .nav-link:hover,
.site-header.header-light .nav-link.active,
.site-header.is-scrolled .nav-link:hover,
.site-header.is-scrolled .nav-link.active {
  color: #098c8c;
  background: rgba(17, 166, 166, 0.1);
}

.nav-cta {
  margin-left: 10px;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.08);
  color: currentColor;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

body.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

body.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

body.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-header.header-light .nav-toggle,
.site-header.is-scrolled .nav-toggle {
  border-color: rgba(15, 42, 68, 0.1);
  background: rgba(14, 35, 58, 0.04);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 44px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 760;
  font-size: 14px;
  letter-spacing: -0.01em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

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

.btn-primary {
  color: #04131f;
  background: linear-gradient(135deg, var(--aqua), #6deaff 58%, #8ea8ff);
  box-shadow: 0 14px 36px rgba(36, 223, 195, 0.22);
}

.btn-primary:hover {
  box-shadow: 0 18px 44px rgba(36, 223, 195, 0.3);
}

.btn-dark {
  color: #ffffff;
  background: #0b2136;
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 14px 34px rgba(6, 17, 31, 0.2);
}

.btn-outline {
  color: var(--ink-900);
  background: rgba(255, 255, 255, 0.82);
  border-color: rgba(15, 42, 68, 0.12);
}

.section-dark .btn-outline,
.hero .btn-outline,
.page-hero.dark .btn-outline {
  color: #eaf8ff;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.16);
}

.btn-ghost {
  color: currentColor;
  background: transparent;
  border-color: rgba(154, 202, 219, 0.18);
}

.btn-sm {
  min-height: 38px;
  padding: 9px 14px;
  font-size: 13px;
}

/* Hero */
.hero {
  position: relative;
  min-height: 800px;
  padding: 154px 0 92px;
  color: #f8fbff;
  overflow: hidden;
  background:
    radial-gradient(circle at 14% 18%, rgba(36, 223, 195, 0.22), transparent 32%),
    radial-gradient(circle at 84% 28%, rgba(59, 130, 246, 0.26), transparent 34%),
    linear-gradient(135deg, #06111f 0%, #0a1d31 52%, #06111f 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(460px, 1.05fr);
  gap: 56px;
  align-items: center;
}

.hero-content h1 {
  margin-top: 18px;
  max-width: 690px;
  font-size: clamp(42px, 5.5vw, 68px);
}

.hero-lead {
  margin-top: 22px;
  max-width: 650px;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.metric-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  border: 1px solid rgba(154, 202, 219, 0.18);
  border-radius: 999px;
  color: rgba(237, 248, 255, 0.86);
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  font-size: 13px;
  font-weight: 680;
}

.metric-pill::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--aqua);
  box-shadow: 0 0 18px rgba(36, 223, 195, 0.9);
}

.hero-visual {
  position: relative;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 16% -4% -8% 16%;
  border-radius: 42px;
  background: linear-gradient(135deg, rgba(36, 223, 195, 0.18), rgba(59, 130, 246, 0.18));
  filter: blur(34px);
}

.product-shell {
  position: relative;
  z-index: 1;
  border: 1px solid rgba(163, 222, 235, 0.24);
  border-radius: 28px;
  background: rgba(10, 27, 45, 0.72);
  box-shadow: var(--shadow-dark);
  backdrop-filter: blur(20px);
  overflow: hidden;
}

.window-bar {
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
}

.window-dots {
  display: flex;
  gap: 7px;
}

.window-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
}

.window-title {
  color: rgba(237, 248, 255, 0.68);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.app-screen {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) 188px;
  min-height: 540px;
  background:
    linear-gradient(180deg, rgba(12, 34, 56, 0.94), rgba(6, 17, 31, 0.98));
}

.mock-sidebar {
  padding: 18px 12px;
  border-right: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(3, 12, 24, 0.34);
}

.mock-logo {
  width: 38px;
  height: 38px;
  margin: 0 auto 18px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: #03131f;
  font-size: 13px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--aqua), #80e8ff);
}

.mock-menu {
  display: grid;
  gap: 10px;
}

.mock-menu-item {
  height: 52px;
  border: 1px solid transparent;
  border-radius: 15px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: rgba(237, 248, 255, 0.54);
  font-size: 10px;
}

.mock-menu-item i {
  width: 18px;
  height: 18px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.12);
}

.mock-menu-item.active {
  color: #98fff0;
  border-color: rgba(36, 223, 195, 0.28);
  background: rgba(36, 223, 195, 0.1);
}

.mock-menu-item.active i {
  background: linear-gradient(135deg, var(--aqua), #77dfff);
}

.mock-main {
  min-width: 0;
  padding: 20px;
}

.mock-topline,
.panel-head,
.preview-head,
.wave-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.project-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  color: rgba(237, 248, 255, 0.8);
  background: rgba(255, 255, 255, 0.05);
  font-size: 12px;
}

.status-dot,
.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--aqua);
  box-shadow: 0 0 16px rgba(36, 223, 195, 0.9);
}

.mock-toolbar {
  display: flex;
  gap: 8px;
}

.mock-toolbar span {
  width: 36px;
  height: 28px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
}

.subtitle-list {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.subtitle-row {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) 58px;
  gap: 12px;
  align-items: center;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  color: rgba(237, 248, 255, 0.75);
  background: rgba(255, 255, 255, 0.04);
}

.subtitle-row.active {
  border-color: rgba(36, 223, 195, 0.34);
  background: linear-gradient(135deg, rgba(36, 223, 195, 0.12), rgba(59, 130, 246, 0.06));
}

.row-time {
  color: #80fff0;
  font-size: 11px;
  font-weight: 800;
}

.row-text {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-size: 13px;
}

.row-role {
  padding: 5px 8px;
  border-radius: 999px;
  text-align: center;
  color: rgba(237, 248, 255, 0.75);
  background: rgba(255, 255, 255, 0.08);
  font-size: 11px;
}

.mock-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(170px, 0.78fr);
  gap: 14px;
  margin-top: 16px;
}

.preview-card,
.wave-card,
.queue-card,
.mock-panel {
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.055);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.preview-card,
.wave-card {
  padding: 14px;
}

.preview-head,
.wave-head {
  color: rgba(237, 248, 255, 0.82);
  font-size: 12px;
  font-weight: 760;
}

.preview-head small,
.wave-head small {
  color: rgba(237, 248, 255, 0.48);
}

.video-face {
  position: relative;
  height: 144px;
  margin-top: 12px;
  overflow: hidden;
  border-radius: 16px;
  background:
    radial-gradient(circle at 50% 28%, #f0c9ad 0 24px, transparent 25px),
    radial-gradient(circle at 50% 80%, rgba(36, 223, 195, 0.18), transparent 58%),
    linear-gradient(135deg, rgba(71, 103, 136, 0.62), rgba(10, 27, 45, 0.92));
}

.video-face::before {
  content: "";
  position: absolute;
  left: calc(50% - 36px);
  top: 56px;
  width: 72px;
  height: 78px;
  border-radius: 36px 36px 20px 20px;
  background: linear-gradient(180deg, #f1cfb7, #d79774);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.24);
}

.video-face::after {
  content: "";
  position: absolute;
  left: calc(50% - 14px);
  top: 91px;
  width: 28px;
  height: 9px;
  border-radius: 999px;
  background: #5e2c2b;
  box-shadow:
    -18px -20px 0 -5px #283445,
    18px -20px 0 -5px #283445;
}

.lip-sync-lines {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 14px;
  display: flex;
  align-items: end;
  justify-content: center;
  gap: 6px;
}

.lip-sync-lines span {
  width: 6px;
  height: 22px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--aqua), rgba(36, 223, 195, 0.15));
  animation: pulseBar 1.8s ease-in-out infinite;
}

.lip-sync-lines span:nth-child(2) { height: 42px; animation-delay: 0.1s; }
.lip-sync-lines span:nth-child(3) { height: 30px; animation-delay: 0.2s; }
.lip-sync-lines span:nth-child(4) { height: 52px; animation-delay: 0.3s; }
.lip-sync-lines span:nth-child(5) { height: 26px; animation-delay: 0.4s; }

.waveform {
  height: 66px;
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.waveform span {
  flex: 1;
  min-width: 3px;
  border-radius: 999px;
  background: linear-gradient(180deg, #7cfbea, rgba(77, 184, 255, 0.25));
}

.waveform span:nth-child(1) { height: 20%; }
.waveform span:nth-child(2) { height: 46%; }
.waveform span:nth-child(3) { height: 78%; }
.waveform span:nth-child(4) { height: 35%; }
.waveform span:nth-child(5) { height: 62%; }
.waveform span:nth-child(6) { height: 90%; }
.waveform span:nth-child(7) { height: 52%; }
.waveform span:nth-child(8) { height: 74%; }
.waveform span:nth-child(9) { height: 38%; }
.waveform span:nth-child(10) { height: 68%; }
.waveform span:nth-child(11) { height: 28%; }
.waveform span:nth-child(12) { height: 56%; }

.queue-card {
  margin-top: 14px;
  padding: 13px;
}

.queue-title {
  display: flex;
  justify-content: space-between;
  color: rgba(237, 248, 255, 0.78);
  font-size: 12px;
  font-weight: 760;
}

.progress-track {
  height: 9px;
  margin-top: 11px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.09);
}

.progress-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--aqua), #68d6ff, #8ea8ff);
}

.queue-meta {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  color: rgba(237, 248, 255, 0.48);
  font-size: 11px;
}

.mock-panel {
  padding: 18px 14px;
  border-radius: 0;
  border-top: 0;
  border-right: 0;
  border-bottom: 0;
  background: rgba(4, 17, 31, 0.54);
}

.panel-head strong {
  color: rgba(237, 248, 255, 0.9);
  font-size: 13px;
}

.voice-card {
  margin-top: 14px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.05);
}

.voice-card.active {
  border-color: rgba(36, 223, 195, 0.32);
  background: rgba(36, 223, 195, 0.09);
}

.voice-name {
  color: rgba(237, 248, 255, 0.88);
  font-size: 12px;
  font-weight: 800;
}

.voice-meta {
  margin-top: 5px;
  color: rgba(237, 248, 255, 0.46);
  font-size: 11px;
}

.param-group {
  margin-top: 20px;
  display: grid;
  gap: 13px;
}

.param-row {
  color: rgba(237, 248, 255, 0.68);
  font-size: 11px;
}

.param-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 7px;
}

.slider {
  height: 7px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.09);
}

.slider i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--aqua), #67d6ff);
}

@keyframes pulseBar {
  0%, 100% { transform: scaleY(0.72); opacity: 0.68; }
  50% { transform: scaleY(1); opacity: 1; }
}

/* Home value cards */
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.value-card,
.scene-card,
.feature-card,
.require-card,
.install-step,
.contact-card,
.legal-card,
.doc-card,
.stat-card {
  border: 1px solid rgba(15, 42, 68, 0.09);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow-sm);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.value-card:hover,
.scene-card:hover,
.feature-card:hover,
.require-card:hover,
.install-step:hover,
.contact-card:hover,
.doc-card:hover,
.stat-card:hover {
  transform: translateY(-5px);
  border-color: rgba(17, 166, 166, 0.24);
  box-shadow: var(--shadow-md);
}

.value-card {
  padding: 24px;
}

.card-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  color: #04353a;
  background: linear-gradient(135deg, rgba(36, 223, 195, 0.24), rgba(59, 130, 246, 0.14));
  font-weight: 900;
}

.value-card h3,
.scene-card h3,
.feature-card h3,
.require-card h3,
.contact-card h3,
.doc-card h3 {
  margin-top: 18px;
  font-size: 21px;
}

.value-card p,
.scene-card p,
.feature-card p,
.require-card p,
.contact-card p,
.doc-card p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 15px;
}

/* Feature showcase */
.showcase-wrap {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 24px;
  align-items: stretch;
}

.feature-tabs {
  display: grid;
  gap: 10px;
}

.feature-tab {
  width: 100%;
  padding: 17px 18px;
  border: 1px solid rgba(15, 42, 68, 0.09);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink-900);
  cursor: pointer;
  text-align: left;
  transition: background 0.22s ease, transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.feature-tab:hover {
  transform: translateX(4px);
  border-color: rgba(17, 166, 166, 0.22);
}

.feature-tab.active {
  color: #effdff;
  border-color: rgba(36, 223, 195, 0.2);
  background:
    radial-gradient(circle at 80% 10%, rgba(36, 223, 195, 0.26), transparent 34%),
    linear-gradient(135deg, #0c253c, #061827);
  box-shadow: 0 16px 36px rgba(6, 17, 31, 0.15);
}

.feature-tab strong {
  display: block;
  font-size: 16px;
}

.feature-tab span {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 13px;
}

.feature-tab.active span {
  color: rgba(237, 248, 255, 0.65);
}

.feature-display {
  position: relative;
  min-height: 572px;
  border-radius: var(--radius-lg);
  color: #edf8ff;
  overflow: hidden;
  background:
    radial-gradient(circle at 80% 20%, rgba(36, 223, 195, 0.22), transparent 34%),
    linear-gradient(135deg, #071827, #0e2941);
  box-shadow: var(--shadow-md);
}

.feature-display::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(180deg, #000, transparent 92%);
}

.feature-detail {
  display: none;
  position: relative;
  z-index: 1;
  padding: 34px;
}

.feature-detail.active {
  display: grid;
  gap: 22px;
  animation: fadeLift 0.34s ease both;
}

.feature-detail h3 {
  font-size: clamp(28px, 4vw, 42px);
}

.feature-detail p {
  max-width: 680px;
  color: rgba(237, 248, 255, 0.76);
  font-size: 16px;
}

.feature-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.meta-box {
  padding: 15px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 17px;
  background: rgba(255, 255, 255, 0.06);
}

.meta-box small {
  color: rgba(237, 248, 255, 0.52);
  font-size: 12px;
}

.meta-box strong {
  display: block;
  margin-top: 6px;
  font-size: 15px;
}

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

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 6px 10px;
  border-radius: 999px;
  color: #0b6f70;
  background: rgba(36, 223, 195, 0.13);
  font-size: 12px;
  font-weight: 760;
}

.section-dark .tag,
.feature-display .tag,
.page-hero.dark .tag {
  color: #a9fff3;
  border: 1px solid rgba(36, 223, 195, 0.22);
  background: rgba(36, 223, 195, 0.1);
}

.detail-visual {
  min-height: 220px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.055);
  overflow: hidden;
}

.detail-visual-grid {
  display: grid;
  grid-template-columns: 1fr 0.78fr;
  gap: 14px;
  padding: 16px;
}

.detail-script,
.detail-side {
  border-radius: 18px;
  background: rgba(3, 12, 24, 0.35);
  padding: 14px;
}

.script-line {
  height: 14px;
  margin: 12px 0;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(255,255,255,0.2), rgba(255,255,255,0.06));
}

.script-line.short { width: 64%; }
.script-line.mid { width: 82%; }
.script-line.glow { background: linear-gradient(90deg, rgba(36,223,195,0.88), rgba(95,231,255,0.18)); }

.visual-meter {
  height: 86px;
  display: flex;
  align-items: end;
  gap: 8px;
  margin-top: 12px;
}

.visual-meter span {
  flex: 1;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--aqua), rgba(36, 223, 195, 0.15));
}

.visual-meter span:nth-child(1) { height: 36%; }
.visual-meter span:nth-child(2) { height: 72%; }
.visual-meter span:nth-child(3) { height: 52%; }
.visual-meter span:nth-child(4) { height: 88%; }
.visual-meter span:nth-child(5) { height: 44%; }
.visual-meter span:nth-child(6) { height: 66%; }

@keyframes fadeLift {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Workflow */
.workflow-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.workflow-grid::before {
  content: "";
  position: absolute;
  top: 40px;
  left: 7%;
  right: 7%;
  height: 2px;
  background: linear-gradient(90deg, rgba(17, 166, 166, 0), rgba(17, 166, 166, 0.45), rgba(59, 130, 246, 0.4), rgba(17, 166, 166, 0));
}

.flow-step {
  position: relative;
  z-index: 1;
  padding: 22px;
  border: 1px solid rgba(15, 42, 68, 0.09);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-sm);
}

.flow-number {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(17, 166, 166, 0.2);
  border-radius: 18px;
  color: #064a50;
  background: linear-gradient(135deg, #dffbf5, #ecf5ff);
  font-size: 18px;
  font-weight: 900;
}

.flow-step h3 {
  margin-top: 18px;
  font-size: 20px;
}

.flow-step p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
}

/* Scenes */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.scene-card {
  padding: 24px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.94), rgba(255,255,255,0.82)),
    radial-gradient(circle at top right, rgba(36, 223, 195, 0.24), transparent 42%);
}

.scene-card h3 {
  font-size: 20px;
}

/* CTA */
.cta-card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(154, 202, 219, 0.22);
  border-radius: var(--radius-xl);
  color: #eff8ff;
  background:
    radial-gradient(circle at 14% 20%, rgba(36, 223, 195, 0.2), transparent 34%),
    radial-gradient(circle at 86% 10%, rgba(59, 130, 246, 0.24), transparent 35%),
    linear-gradient(135deg, #071827, #0d2741 62%, #06111f);
  box-shadow: var(--shadow-dark);
}

.cta-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 32px;
  align-items: center;
  padding: 42px;
}

.cta-card h2 {
  margin-top: 12px;
  font-size: clamp(30px, 4vw, 46px);
}

.cta-card p {
  margin-top: 16px;
  max-width: 680px;
  color: rgba(237, 248, 255, 0.75);
}

.download-specs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.spec-item {
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.06);
}

.spec-item small {
  display: block;
  color: rgba(237, 248, 255, 0.48);
  font-size: 12px;
}

.spec-item strong {
  display: block;
  margin-top: 4px;
  color: rgba(237, 248, 255, 0.92);
  font-size: 14px;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.cta-panel {
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(16px);
}

.cta-panel-title {
  font-size: 14px;
  color: rgba(237, 248, 255, 0.56);
}

.cta-version {
  margin-top: 12px;
  font-size: 36px;
  font-weight: 900;
  letter-spacing: -0.06em;
}

.cta-panel-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.cta-panel-list li {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(237, 248, 255, 0.68);
  font-size: 13px;
}

.cta-panel-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.cta-panel-list strong {
  color: rgba(237, 248, 255, 0.95);
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 12px;
  max-width: 940px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid rgba(15, 42, 68, 0.09);
  border-radius: 18px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 19px 22px;
  border: 0;
  background: transparent;
  color: var(--ink-900);
  cursor: pointer;
  text-align: left;
  font-weight: 800;
}

.faq-question::after {
  content: "+";
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: #077c80;
  background: rgba(36, 223, 195, 0.13);
  transition: transform 0.2s ease;
}

.faq-item.open .faq-question::after {
  content: "−";
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.24s ease;
}

.faq-answer p {
  padding: 0 22px 20px;
  color: var(--muted);
}

.faq-item.open .faq-answer {
  max-height: 260px;
}

/* Footer */
.site-footer {
  color: rgba(237, 248, 255, 0.74);
  background: #06111f;
  padding: 58px 0 26px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, minmax(0, 1fr));
  gap: 34px;
}

.footer-brand p {
  margin-top: 14px;
  max-width: 320px;
  color: rgba(237, 248, 255, 0.58);
  font-size: 14px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 15px;
  letter-spacing: -0.01em;
}

.footer-col a,
.footer-col span {
  display: block;
  margin-top: 10px;
  color: rgba(237, 248, 255, 0.58);
  font-size: 14px;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: #98fff0;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  margin-top: 42px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(237, 248, 255, 0.5);
  font-size: 13px;
}

/* Page hero and common page layouts */
.page-hero {
  position: relative;
  padding: 142px 0 72px;
  background:
    radial-gradient(circle at 78% 18%, rgba(36, 223, 195, 0.15), transparent 35%),
    linear-gradient(180deg, #ffffff 0%, #f1f7fb 100%);
}

.page-hero.dark {
  color: #eff8ff;
  background:
    radial-gradient(circle at 20% 20%, rgba(36, 223, 195, 0.22), transparent 32%),
    radial-gradient(circle at 80% 24%, rgba(59, 130, 246, 0.24), transparent 34%),
    linear-gradient(135deg, #06111f, #0b2136 58%, #06111f);
  overflow: hidden;
}

.page-hero h1 {
  margin-top: 18px;
  max-width: 820px;
  font-size: clamp(38px, 5vw, 58px);
}

.page-hero p {
  margin-top: 18px;
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
}

.page-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 24px;
  align-items: start;
}

.stat-stack {
  display: grid;
  gap: 14px;
}

.stat-card {
  padding: 20px;
}

.stat-card small {
  color: var(--muted);
  font-size: 13px;
}

.stat-card strong {
  display: block;
  margin-top: 6px;
  font-size: 24px;
  letter-spacing: -0.04em;
}

/* Download page */
.download-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 24px;
  align-items: start;
}

.download-card {
  padding: 28px;
  border: 1px solid rgba(15, 42, 68, 0.08);
  border-radius: var(--radius-lg);
  background: #ffffff;
  box-shadow: var(--shadow-md);
}

.download-card.featured {
  position: sticky;
  top: 96px;
}

.download-title-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: start;
}

.version-badge {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 7px 12px;
  border-radius: 999px;
  color: #086f73;
  background: rgba(36, 223, 195, 0.12);
  font-weight: 900;
  font-size: 13px;
}

.download-card h2 {
  font-size: 30px;
}

.download-card p {
  margin-top: 12px;
  color: var(--muted);
}

.download-meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.download-meta {
  padding: 14px;
  border-radius: 16px;
  background: var(--surface-soft);
}

.download-meta small {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.download-meta strong {
  display: block;
  margin-top: 4px;
  font-size: 14px;
}

.download-main-btn {
  width: 100%;
  margin-top: 24px;
}

.note-box {
  margin-top: 16px;
  padding: 14px 16px;
  border: 1px solid rgba(17, 166, 166, 0.14);
  border-radius: 16px;
  color: var(--muted);
  background: rgba(36, 223, 195, 0.07);
  font-size: 13px;
}

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

.require-card {
  padding: 22px;
}

.install-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.install-step {
  padding: 22px;
}

.install-step .flow-number {
  width: 46px;
  height: 46px;
  border-radius: 15px;
}

.install-step h3 {
  margin-top: 16px;
  font-size: 18px;
}

.install-step p {
  margin-top: 9px;
  color: var(--muted);
  font-size: 14px;
}

/* Features page */
.feature-group {
  display: grid;
  gap: 22px;
  margin-top: 34px;
}

.feature-group-block {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 24px;
  align-items: stretch;
  padding: 24px;
  border: 1px solid rgba(15, 42, 68, 0.08);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-sm);
}

.feature-group-block.reverse {
  grid-template-columns: 1.12fr 0.88fr;
}

.feature-copy h2 {
  margin-top: 12px;
  font-size: clamp(28px, 4vw, 42px);
}

.feature-copy p {
  margin-top: 14px;
  color: var(--muted);
}

.feature-point-list {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.feature-point-list li {
  display: flex;
  gap: 10px;
  color: var(--ink-600);
  font-size: 15px;
}

.feature-point-list li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 10px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 16px rgba(17, 166, 166, 0.42);
}

.feature-screenshot {
  min-height: 340px;
  border: 1px solid rgba(15, 42, 68, 0.1);
  border-radius: 24px;
  overflow: hidden;
  background:
    radial-gradient(circle at 80% 10%, rgba(36, 223, 195, 0.18), transparent 34%),
    linear-gradient(135deg, #091827, #0e2a44);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}

.screenshot-bar {
  height: 42px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 15px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.04);
}

.screenshot-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.22);
}

.screenshot-body {
  padding: 18px;
}

.screenshot-grid {
  display: grid;
  grid-template-columns: 1fr 0.64fr;
  gap: 14px;
}

.screenshot-panel {
  min-height: 240px;
  padding: 16px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px;
  background: rgba(255,255,255,0.05);
}

.screenshot-row {
  height: 34px;
  margin-bottom: 10px;
  border-radius: 12px;
  background: rgba(255,255,255,0.08);
}

.screenshot-row.active {
  background: linear-gradient(90deg, rgba(36,223,195,0.22), rgba(95,231,255,0.08));
  border: 1px solid rgba(36,223,195,0.18);
}

.feature-card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.feature-card {
  padding: 22px;
}

/* Help page */
.doc-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.doc-sidebar {
  position: sticky;
  top: 96px;
  padding: 18px;
  border: 1px solid rgba(15, 42, 68, 0.08);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-sm);
}

.doc-sidebar h3 {
  font-size: 16px;
  margin-bottom: 10px;
}

.doc-sidebar a {
  display: block;
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--ink-600);
  font-size: 14px;
  transition: color 0.2s ease, background 0.2s ease;
}

.doc-sidebar a:hover,
.doc-sidebar a.active {
  color: #077c80;
  background: rgba(36, 223, 195, 0.1);
}

.doc-content {
  display: grid;
  gap: 20px;
}

.doc-card {
  padding: 28px;
}

.doc-card h2 {
  font-size: 30px;
}

.doc-card h3 {
  margin-top: 24px;
  font-size: 20px;
}

.doc-card p,
.doc-card li {
  color: var(--ink-600);
}

.doc-card p {
  margin-top: 12px;
}

.doc-card ol,
.doc-card ul {
  margin-top: 14px;
  padding-left: 20px;
}

.doc-card li {
  margin-top: 10px;
  list-style: decimal;
}

.doc-card ul li {
  list-style: disc;
}

.doc-note {
  margin-top: 18px;
  padding: 15px 16px;
  border-radius: 16px;
  color: #0a555a;
  background: rgba(36, 223, 195, 0.1);
}

/* Changelog */
.timeline {
  position: relative;
  display: grid;
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 20px;
  width: 2px;
  background: linear-gradient(180deg, rgba(17,166,166,0.62), rgba(59,130,246,0.1));
}

.timeline-item {
  position: relative;
  padding-left: 58px;
}

.timeline-dot {
  position: absolute;
  left: 9px;
  top: 25px;
  width: 24px;
  height: 24px;
  border: 5px solid #f5f8fc;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--aqua), var(--blue));
  box-shadow: 0 0 0 1px rgba(17,166,166,0.28), 0 0 24px rgba(36,223,195,0.32);
}

.version-card {
  padding: 26px;
  border: 1px solid rgba(15, 42, 68, 0.08);
  border-radius: 24px;
  background: #ffffff;
  box-shadow: var(--shadow-sm);
}

.version-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}

.version-head h2 {
  font-size: 28px;
}

.version-date {
  color: var(--muted);
  font-weight: 700;
}

.change-list {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.change-list li {
  position: relative;
  padding-left: 20px;
  color: var(--ink-600);
}

.change-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.contact-card {
  padding: 24px;
}

.contact-card .btn {
  margin-top: 18px;
}

.qr-section {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.qr-card {
  padding: 24px;
  border: 1px solid rgba(15, 42, 68, 0.08);
  border-radius: 24px;
  background: rgba(255,255,255,0.9);
  box-shadow: var(--shadow-sm);
}

.qr-placeholder {
  position: relative;
  width: 150px;
  height: 150px;
  margin: 14px 0 0;
  border: 1px dashed rgba(17, 166, 166, 0.42);
  border-radius: 22px;
  display: grid;
  place-items: center;
  color: #087b80;
  background:
    linear-gradient(90deg, rgba(17, 166, 166, 0.08) 50%, transparent 50%) 0 0 / 18px 18px,
    linear-gradient(rgba(17, 166, 166, 0.08) 50%, transparent 50%) 0 0 / 18px 18px,
    #f8fbff;
  font-weight: 800;
  text-align: center;
}

.qr-card h3 {
  font-size: 20px;
}

.qr-card p {
  margin-top: 10px;
  color: var(--muted);
}

/* Legal */
.legal-layout {
  max-width: 920px;
  margin: 0 auto;
}

.legal-card {
  padding: 36px;
  background: #ffffff;
}

.legal-card h2 {
  margin-top: 30px;
  font-size: 26px;
}

.legal-card h2:first-child {
  margin-top: 0;
}

.legal-card p,
.legal-card li {
  color: var(--ink-600);
}

.legal-card p {
  margin-top: 12px;
}

.legal-card ul {
  margin-top: 12px;
  padding-left: 22px;
}

.legal-card li {
  margin-top: 8px;
  list-style: disc;
}

/* Reveal animation */
.reveal-ready .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

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

.reveal-ready .reveal.delay-1 { transition-delay: 0.08s; }
.reveal-ready .reveal.delay-2 { transition-delay: 0.16s; }
.reveal-ready .reveal.delay-3 { transition-delay: 0.24s; }

@media (max-width: 1100px) {
  .hero-grid,
  .page-intro-grid,
  .download-layout,
  .feature-group-block,
  .feature-group-block.reverse {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: unset;
  }

  .hero-visual {
    max-width: 720px;
    margin: 0 auto;
  }

  .download-card.featured {
    position: static;
  }

  .feature-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 920px) {
  :root {
    --header-height: 68px;
  }

  .container {
    width: min(100% - 30px, var(--container));
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 15px;
    right: 15px;
    display: grid;
    gap: 6px;
    padding: 14px;
    border: 1px solid rgba(15, 42, 68, 0.1);
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.96);
    color: var(--ink-900);
    box-shadow: var(--shadow-md);
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  body.nav-open .site-nav {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav-link {
    padding: 13px 14px;
  }

  .nav-cta {
    margin: 8px 0 0;
    width: 100%;
  }

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

  .hero {
    padding-top: 126px;
  }

  .showcase-wrap,
  .doc-layout,
  .cta-inner {
    grid-template-columns: 1fr;
  }

  .feature-display {
    min-height: auto;
  }

  .workflow-grid,
  .install-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .workflow-grid::before {
    display: none;
  }

  .value-grid,
  .scene-grid,
  .contact-grid,
  .qr-section,
  .require-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .doc-sidebar {
    position: static;
  }
}

@media (max-width: 720px) {
  .section {
    padding: 68px 0;
  }

  .page-hero {
    padding: 116px 0 58px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .hero-content h1 {
    font-size: 38px;
  }

  .hero-lead,
  .page-hero p {
    font-size: 16px;
  }

  .hero-actions,
  .page-hero-actions,
  .cta-actions {
    flex-direction: column;
  }

  .hero-actions .btn,
  .page-hero-actions .btn,
  .cta-actions .btn {
    width: 100%;
  }

  .app-screen {
    grid-template-columns: 64px minmax(0, 1fr);
  }

  .mock-panel {
    display: none;
  }

  .mock-main {
    padding: 14px;
  }

  .mock-sidebar {
    padding: 12px 8px;
  }

  .mock-menu-item span {
    display: none;
  }

  .subtitle-row {
    grid-template-columns: 44px minmax(0, 1fr);
  }

  .row-role {
    display: none;
  }

  .mock-cards,
  .detail-visual-grid,
  .screenshot-grid,
  .download-specs,
  .download-meta-grid,
  .feature-meta {
    grid-template-columns: 1fr;
  }

  .value-grid,
  .scene-grid,
  .workflow-grid,
  .install-grid,
  .contact-grid,
  .qr-section,
  .require-grid,
  .feature-card-grid {
    grid-template-columns: 1fr;
  }

  .cta-inner,
  .legal-card,
  .doc-card,
  .download-card {
    padding: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    display: grid;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}
.progress-fill.w-68 { width: 68%; }
.slider i.w-58 { width: 58%; }
.slider i.w-62 { width: 62%; }
.slider i.w-76 { width: 76%; }