:root {
  --ink: #050505;
  --ink-soft: #111111;
  --blue: #d7ff39;
  --blue-dark: #b7df16;
  --cyan: #e8ff8a;
  --mint: #c9f23d;
  --paper: #f5f5f0;
  --surface: #101010;
  --surface-blue: #1a1a1a;
  --line: #2b2b2b;
  --text: #f5f5f0;
  --muted: #a6a69e;
  --success: #c7ee39;
  --warning: #f2bd5a;
  --radius-sm: 14px;
  --radius-md: 22px;
  --radius-lg: 32px;
  --shadow-sm: 0 12px 34px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 30px 80px rgba(0, 0, 0, 0.55);
  --container: 1180px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  min-width: 280px;
  color: var(--text);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

p,
h2,
h3,
ul,
ol {
  margin-top: 0;
}

ul,
ol {
  padding-left: 0;
}

a,
summary {
  -webkit-tap-highlight-color: transparent;
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 4px;
  border-radius: 6px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 999;
  padding: 10px 16px;
  color: var(--paper);
  background: var(--blue);
  border-radius: 10px;
  transform: translateY(-150%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

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

.section {
  position: relative;
  padding: 104px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(218, 228, 240, 0.85);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
}

.nav-wrap {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
}

.brand-logo {
  width: 110px;
  height: auto;
  display: block;
  object-fit: contain;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 2.2vw, 34px);
  color: #4c5b6f;
  font-size: 14px;
  font-weight: 700;
}

.main-nav a {
  position: relative;
  padding: 25px 0 22px;
  white-space: nowrap;
}

.main-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 16px;
  left: 0;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform 0.2s ease;
}

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

.main-nav a:hover::after {
  transform: scaleX(1);
}

.nav-cta {
  min-height: 44px;
  padding: 10px 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--paper);
  background: var(--ink);
  border-radius: 12px;
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
  transition: background 0.2s ease, transform 0.2s ease;
}

.nav-cta:hover {
  background: var(--blue);
  transform: translateY(-2px);
}

.hero {
  min-height: 760px;
  padding-top: 100px;
  padding-bottom: 0;
  overflow: hidden;
  background:
    linear-gradient(125deg, rgba(238, 245, 255, 0.95) 0%, rgba(255, 255, 255, 0.98) 48%, rgba(239, 255, 252, 0.86) 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.34;
  background-image:
    linear-gradient(rgba(32, 89, 158, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(32, 89, 158, 0.07) 1px, transparent 1px);
  background-size: 60px 60px;
  -webkit-mask-image: linear-gradient(to right, #000, transparent 74%);
  mask-image: linear-gradient(to right, #000, transparent 74%);
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  pointer-events: none;
}

.hero-orb-one {
  width: 440px;
  height: 440px;
  top: 60px;
  right: -120px;
  background: radial-gradient(circle, rgba(49, 212, 232, 0.22), transparent 68%);
}

.hero-orb-two {
  width: 360px;
  height: 360px;
  bottom: 10px;
  left: -190px;
  background: radial-gradient(circle, rgba(33, 107, 255, 0.13), transparent 70%);
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 0.93fr) minmax(460px, 1.07fr);
  align-items: center;
  gap: clamp(44px, 6vw, 84px);
}

.eyebrow {
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow > span {
  width: 28px;
  height: 3px;
  display: inline-block;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  border-radius: 3px;
}

.hero h2 {
  max-width: 680px;
  margin-bottom: 26px;
  color: var(--ink);
  font-size: clamp(36px, 4.2vw, 56px);
  line-height: 1.16;
  letter-spacing: -0.04em;
}

.hero h2 em {
  color: transparent;
  background: linear-gradient(100deg, #f5f5f0, #c8c8c2 58%, #94948e);
  -webkit-background-clip: text;
  background-clip: text;
  font-style: normal;
}

.hero-lead {
  max-width: 640px;
  margin-bottom: 32px;
  color: #526176;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.9;
}

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

.btn {
  min-height: 54px;
  padding: 13px 23px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  border: 1px solid transparent;
  border-radius: 14px;
  font-weight: 800;
  line-height: 1.2;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-3px);
}

.btn-primary {
  color: var(--paper);
  background: linear-gradient(105deg, #f5f5f0, #b8b8b2);
  box-shadow: 0 14px 30px rgba(33, 107, 255, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 18px 36px rgba(33, 107, 255, 0.32);
}

.btn-secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.7);
  border-color: #cfdae9;
}

.btn-secondary:hover {
  background: var(--paper);
  box-shadow: var(--shadow-sm);
}

.hero-points {
  margin: 29px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  list-style: none;
  color: #44546a;
  font-size: 13px;
  font-weight: 700;
}

.hero-points li {
  display: flex;
  align-items: center;
  gap: 7px;
}

.hero-points span {
  width: 19px;
  height: 19px;
  display: inline-grid;
  place-items: center;
  color: #087c68;
  background: #d9f8ef;
  border-radius: 50%;
  font-size: 11px;
}

.hero-visual {
  min-height: 510px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-video {
  width: auto;
  height: 510px;
  max-width: 100%;
  display: block;
  object-fit: contain;
}

.hero-strip {
  position: relative;
  z-index: 4;
  min-height: 110px;
  margin-top: 72px;
  padding: 25px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  border-top: 1px solid #dce7f2;
}

.hero-strip p {
  margin-bottom: 0;
  color: #6a788a;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.strip-items {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(18px, 3.6vw, 47px);
  color: #506075;
  font-size: 13px;
  font-weight: 700;
}

.strip-items span {
  display: flex;
  align-items: center;
  gap: 9px;
  white-space: nowrap;
}

.strip-items b {
  color: var(--blue);
  font-size: 16px;
}

.section-heading h2 {
  margin-bottom: 18px;
  color: var(--ink);
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.25;
  letter-spacing: -0.035em;
}

.section-heading > p:last-child,
.section-heading > h2 + p {
  color: var(--muted);
  line-height: 1.9;
}

.heading-center {
  max-width: 760px;
  margin: 0 auto 52px;
  text-align: center;
}

.heading-center .eyebrow {
  justify-content: center;
}

.download-section {
  background: var(--paper);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.download-card {
  position: relative;
  min-width: 0;
  padding: 31px;
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 30px rgba(12, 43, 81, 0.055);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.download-card:hover {
  border-color: #aec8ec;
  box-shadow: var(--shadow-lg);
  transform: translateY(-7px);
}

.download-card.featured {
  background: linear-gradient(145deg, #f3f8ff, #ffffff 62%);
  border-color: #9fc4ff;
}

.recommended {
  position: absolute;
  top: 0;
  right: 0;
  padding: 7px 14px;
  color: var(--paper);
  background: linear-gradient(90deg, #f5f5f0, #b8b8b2);
  border-radius: 0 20px 0 14px;
  font-size: 11px;
  font-weight: 800;
}

.platform-icon {
  width: 61px;
  height: 61px;
  margin-bottom: 23px;
  display: grid;
  place-items: center;
  color: var(--blue);
  background: var(--surface-blue);
  border-radius: 17px;
}

.windows-icon {
  padding: 17px;
  grid-template-columns: repeat(2, 1fr);
  gap: 3px;
}

.windows-icon i {
  width: 12px;
  height: 12px;
  display: block;
  background: var(--blue);
  border-radius: 2px;
}

.android-icon {
  position: relative;
}

.android-icon span {
  width: 28px;
  height: 22px;
  position: absolute;
  bottom: 15px;
  background: var(--blue);
  border-radius: 10px 10px 6px 6px;
}

.android-icon span::before,
.android-icon span::after {
  content: "";
  position: absolute;
  top: 7px;
  width: 3px;
  height: 3px;
  background: var(--paper);
  border-radius: 50%;
}

.android-icon span::before { left: 7px; }
.android-icon span::after { right: 7px; }

.android-icon i {
  width: 2px;
  height: 10px;
  position: absolute;
  top: 17px;
  background: var(--blue);
  transform-origin: bottom;
}

.android-icon i:nth-of-type(1) { left: 23px; transform: rotate(-31deg); }
.android-icon i:nth-of-type(2) { right: 23px; transform: rotate(31deg); }

.ios-icon span {
  width: 29px;
  height: 34px;
  display: grid;
  place-items: center;
  color: var(--paper);
  background: var(--blue);
  border-radius: 45% 45% 50% 50%;
  font-family: Georgia, serif;
  font-size: 21px;
  font-weight: 700;
}

.platform-copy p {
  margin-bottom: 5px;
  color: #8390a2;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.platform-copy h3 {
  margin-bottom: 4px;
  color: var(--ink);
  font-size: 22px;
}

.platform-copy span {
  color: var(--muted);
  font-size: 13px;
}

.download-card ul {
  margin: 24px 0;
  display: grid;
  gap: 10px;
  list-style: none;
  color: #536278;
  font-size: 13px;
}

.download-card li {
  display: flex;
  align-items: center;
  gap: 9px;
}

.download-card li::before {
  content: "✓";
  width: 19px;
  height: 19px;
  display: inline-grid;
  place-items: center;
  color: var(--success);
  background: #e6f9f4;
  border-radius: 50%;
  font-size: 10px;
  font-weight: 900;
}

.card-link {
  min-height: 48px;
  padding: 11px 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--blue);
  background: #f1f6ff;
  border-radius: 11px;
  font-size: 14px;
  font-weight: 800;
  transition: color 0.2s ease, background 0.2s ease;
}

.card-link b {
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  background: var(--paper);
  border-radius: 7px;
}

.card-link:hover {
  color: var(--paper);
  background: var(--blue);
}

.card-link:hover b {
  color: var(--blue);
}

.download-help {
  margin-top: 24px;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.help-icon {
  width: 39px;
  height: 39px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  color: var(--blue);
  background: var(--paper);
  border-radius: 11px;
  font-weight: 900;
  box-shadow: 0 4px 15px rgba(19, 50, 88, 0.08);
}

.download-help div {
  margin-right: auto;
}

.download-help strong {
  color: var(--ink);
  font-size: 14px;
}

.download-help p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 12px;
}

.download-help a {
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}

.news-section {
  overflow: hidden;
  background: #080808;
}

.news-section::before {
  content: "";
  position: absolute;
  top: -240px;
  left: 50%;
  width: 720px;
  height: 420px;
  pointer-events: none;
  background: radial-gradient(circle, rgba(215, 255, 57, 0.08), transparent 68%);
  transform: translateX(-50%);
}

.news-section .container {
  position: relative;
  z-index: 1;
}

.news-heading {
  margin-bottom: 44px;
}

.news-heading h2 {
  margin-bottom: 0;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.news-card {
  min-width: 0;
  display: flex;
  overflow: hidden;
  flex-direction: column;
  background: #121212;
  border: 1px solid #2c2c2c;
  border-radius: var(--radius-md);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.3);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.news-card:hover {
  border-color: #59621f;
  box-shadow: 0 22px 52px rgba(0, 0, 0, 0.48);
  transform: translateY(-6px);
}

.news-media {
  aspect-ratio: 784 / 414;
  overflow: hidden;
  background: #0b0b0b;
  border-bottom: 1px solid #292929;
}

.news-media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.news-card:hover .news-media img {
  transform: scale(1.035);
}

.news-content {
  padding: 25px 25px 27px;
  display: flex;
  flex: 1;
  align-items: flex-start;
  flex-direction: column;
}

.news-card h3 {
  margin: 0 0 10px;
  color: #f5f5f0;
  font-size: 20px;
  line-height: 1.45;
}

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

.features-section::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 420px;
  height: 420px;
  opacity: 0.6;
  background: radial-gradient(circle at top right, rgba(33, 107, 255, 0.14), transparent 66%);
}

.features-layout {
  position: relative;
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: clamp(45px, 7vw, 92px);
  align-items: start;
}

.sticky-heading {
  position: sticky;
  top: 118px;
}

.sticky-heading p {
  max-width: 500px;
}

.text-link {
  margin-top: 13px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 900;
}

.text-link span {
  transition: transform 0.2s ease;
}

.text-link:hover span {
  transform: translateX(5px);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.feature-card {
  position: relative;
  min-height: 254px;
  padding: 29px;
  overflow: hidden;
  background: var(--paper);
  border: 1px solid #e0e8f1;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-card.accent-card {
  color: var(--paper);
  background: linear-gradient(145deg, #242424, #050505);
  border-color: transparent;
}

.feature-card.accent-card::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -80px;
  width: 190px;
  height: 190px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}

.feature-number {
  position: absolute;
  top: 24px;
  right: 25px;
  color: #b4c0ce;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.13em;
}

.accent-card .feature-number {
  color: rgba(255, 255, 255, 0.55);
}

.line-icon {
  width: 49px;
  height: 49px;
  margin-bottom: 24px;
  position: relative;
  color: var(--blue);
  background: var(--surface-blue);
  border-radius: 14px;
}

.accent-card .line-icon {
  color: var(--paper);
  background: rgba(255, 255, 255, 0.14);
}

.device-icon i {
  position: absolute;
  top: 12px;
  left: 10px;
  width: 27px;
  height: 19px;
  border: 2px solid currentColor;
  border-radius: 3px;
}

.device-icon b {
  position: absolute;
  right: 9px;
  bottom: 9px;
  width: 14px;
  height: 22px;
  background: inherit;
  border: 2px solid currentColor;
  border-radius: 3px;
}

.path-icon i,
.path-icon b,
.path-icon em {
  position: absolute;
  width: 8px;
  height: 8px;
  background: currentColor;
  border-radius: 50%;
}

.path-icon i { top: 10px; left: 10px; }
.path-icon b { top: 21px; right: 9px; }
.path-icon em { bottom: 9px; left: 12px; }

.path-icon::before,
.path-icon::after {
  content: "";
  position: absolute;
  height: 2px;
  background: currentColor;
  transform-origin: left;
}

.path-icon::before { top: 18px; left: 16px; width: 22px; transform: rotate(20deg); }
.path-icon::after { top: 31px; left: 18px; width: 23px; transform: rotate(-26deg); }

.shield-icon i {
  position: absolute;
  inset: 9px 11px 8px;
  display: grid;
  place-items: center;
  border: 2px solid currentColor;
  border-radius: 12px 12px 15px 15px;
  font-size: 13px;
  font-style: normal;
  font-weight: 900;
}

.offline-icon i {
  position: absolute;
  top: 10px;
  left: 11px;
  width: 27px;
  height: 27px;
  border: 2px solid currentColor;
  border-radius: 50%;
}

.offline-icon b {
  position: absolute;
  top: 23px;
  left: 8px;
  width: 33px;
  height: 2px;
  background: currentColor;
  transform: rotate(-42deg);
}

.feature-card h3 {
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 19px;
}

.feature-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.85;
}

.accent-card h3,
.accent-card p {
  color: var(--paper);
}

.accent-card p {
  color: rgba(255, 255, 255, 0.78);
}

.install-section {
  overflow: hidden;
  color: var(--paper);
  background: var(--ink);
}

.install-section::before,
.install-section::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.install-section::before {
  top: -180px;
  left: -160px;
  width: 470px;
  height: 470px;
  background: radial-gradient(circle, rgba(33, 107, 255, 0.24), transparent 68%);
}

.install-section::after {
  right: -210px;
  bottom: -210px;
  width: 530px;
  height: 530px;
  background: radial-gradient(circle, rgba(49, 212, 232, 0.16), transparent 68%);
}

.install-section .container {
  position: relative;
  z-index: 2;
}

.light-heading h2,
.light-heading > p:last-child {
  color: var(--paper);
}

.light-heading > p:last-child {
  color: #98aac0;
}

.light-heading .eyebrow {
  color: var(--cyan);
}

.steps-grid {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  list-style: none;
  counter-reset: steps;
}

.step-card {
  position: relative;
  min-height: 245px;
  padding: 27px 25px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid #27384f;
  border-radius: 20px;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.step-card:hover {
  background: rgba(255, 255, 255, 0.075);
  border-color: #3c5e82;
  transform: translateY(-5px);
}

.step-card:not(:last-child)::after {
  content: "→";
  position: absolute;
  top: 46px;
  right: -23px;
  z-index: 3;
  width: 29px;
  height: 29px;
  display: grid;
  place-items: center;
  color: var(--cyan);
  background: var(--ink);
  border: 1px solid #30465f;
  border-radius: 50%;
  font-size: 12px;
}

.step-num {
  position: absolute;
  top: 21px;
  right: 21px;
  color: #53677f;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.step-icon {
  width: 51px;
  height: 51px;
  margin-bottom: 25px;
  display: grid;
  place-items: center;
  color: var(--cyan);
  background: rgba(49, 212, 232, 0.09);
  border: 1px solid rgba(49, 212, 232, 0.16);
  border-radius: 15px;
  font-size: 22px;
  font-weight: 500;
}

.step-card h3 {
  margin-bottom: 10px;
  color: var(--paper);
  font-size: 18px;
}

.step-card p {
  margin-bottom: 0;
  color: #93a5bb;
  font-size: 13px;
  line-height: 1.8;
}

.install-note {
  margin-top: 24px;
  padding: 17px 21px;
  display: flex;
  align-items: flex-start;
  gap: 13px;
  color: #aebed0;
  background: rgba(33, 107, 255, 0.08);
  border: 1px solid rgba(88, 142, 219, 0.24);
  border-radius: 14px;
  font-size: 12px;
}

.install-note > span {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  color: var(--cyan);
  border: 1px solid var(--cyan);
  border-radius: 50%;
  font-family: Georgia, serif;
  font-weight: 800;
}

.install-note p {
  margin-bottom: 0;
}

.install-note strong {
  color: #dce8f5;
}

.safety-section {
  background: var(--paper);
}

.safety-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: clamp(44px, 7vw, 92px);
}

.safety-copy > h2 {
  max-width: 530px;
  margin-bottom: 19px;
  color: var(--ink);
  font-size: clamp(34px, 4vw, 48px);
  line-height: 1.25;
  letter-spacing: -0.04em;
}

.safety-copy > p:not(.eyebrow) {
  max-width: 610px;
  color: var(--muted);
}

.safety-list {
  margin-top: 34px;
  display: grid;
  gap: 10px;
}

.safety-list article {
  padding: 15px 17px;
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 15px;
  align-items: start;
  border: 1px solid transparent;
  border-radius: 14px;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.safety-list article:hover {
  background: var(--surface);
  border-color: var(--line);
}

.safety-list article > b {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  color: var(--blue);
  background: var(--surface-blue);
  border-radius: 10px;
  font-size: 10px;
  letter-spacing: 0.06em;
}

.safety-list h3 {
  margin-bottom: 3px;
  color: var(--ink);
  font-size: 15px;
}

.safety-list p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 13px;
}

.security-panel {
  position: relative;
  padding: 34px;
  overflow: hidden;
  color: var(--paper);
  background: linear-gradient(145deg, #0a182a, #102943);
  border-radius: 27px;
  box-shadow: var(--shadow-lg);
}

.security-panel::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -70px;
  width: 210px;
  height: 210px;
  background: radial-gradient(circle, rgba(49, 212, 232, 0.2), transparent 67%);
  border-radius: 50%;
}

.security-top {
  position: relative;
  padding-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 15px;
  border-bottom: 1px solid #29425e;
}

.security-shield {
  width: 51px;
  height: 56px;
  display: grid;
  place-items: center;
  color: var(--ink);
  background: linear-gradient(145deg, var(--mint), var(--cyan));
  border-radius: 17px 17px 22px 22px;
  font-size: 22px;
  font-weight: 900;
}

.security-top div:last-child {
  display: grid;
}

.security-top span {
  color: var(--cyan);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.17em;
}

.security-top strong {
  margin-top: 3px;
  font-size: 19px;
}

.security-panel ul {
  margin: 26px 0;
  display: grid;
  gap: 18px;
  list-style: none;
}

.security-panel li {
  display: flex;
  align-items: center;
  gap: 13px;
}

.security-panel li > span {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  color: var(--mint);
  background: rgba(128, 240, 209, 0.1);
  border: 1px solid rgba(128, 240, 209, 0.25);
  border-radius: 50%;
  font-size: 11px;
}

.security-panel li div {
  display: grid;
}

.security-panel li strong {
  font-size: 13px;
}

.security-panel li small {
  color: #8fa4bb;
  font-size: 11px;
}

.security-panel > p {
  margin-bottom: 0;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #c2cedb;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid #29415d;
  border-radius: 11px;
  font-size: 11px;
}

.security-panel > p span {
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  color: #ffd388;
  border: 1px solid #ffd388;
  border-radius: 50%;
  font-size: 10px;
  font-weight: 900;
}

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

.faq-layout {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: clamp(44px, 7vw, 90px);
  align-items: start;
}

.faq-intro h2 {
  font-size: clamp(31px, 3.4vw, 43px);
}

.faq-badge {
  margin-top: 29px;
  padding: 15px 17px;
  display: flex;
  align-items: center;
  gap: 13px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
}

.faq-badge > span {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: var(--paper);
  background: var(--blue);
  border-radius: 11px;
  font-weight: 900;
}

.faq-badge div {
  display: grid;
}

.faq-badge strong {
  color: var(--ink);
  font-size: 13px;
}

.faq-badge small {
  color: var(--muted);
  font-size: 11px;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-list details {
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 15px;
  box-shadow: 0 6px 20px rgba(19, 47, 82, 0.04);
}

.faq-list details[open] {
  border-color: #b8d0f1;
  box-shadow: 0 12px 30px rgba(19, 73, 141, 0.08);
}

.faq-list summary {
  min-height: 64px;
  padding: 18px 21px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 800;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary b {
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  color: var(--blue);
  background: var(--surface-blue);
  border-radius: 8px;
  font-size: 17px;
  transition: transform 0.2s ease;
}

.faq-list details[open] summary b {
  transform: rotate(45deg);
}

.faq-list details p {
  margin: -3px 21px 0;
  padding: 0 0 20px;
  color: var(--muted);
  border-top: 1px solid #edf1f6;
  font-size: 13px;
  line-height: 1.9;
}

.faq-list details[open] p {
  padding-top: 15px;
}

.closing-section {
  padding: 76px 0;
  overflow: hidden;
  background: var(--paper);
}

.closing-card {
  position: relative;
  padding: 50px 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  overflow: hidden;
  color: var(--paper);
  background: linear-gradient(115deg, #171717, #050505);
  border-radius: 28px;
  box-shadow: 0 25px 60px rgba(19, 90, 194, 0.23);
}

.closing-card::before,
.closing-card::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 50%;
}

.closing-card::before {
  width: 240px;
  height: 240px;
  top: -120px;
  right: 120px;
}

.closing-card::after {
  width: 330px;
  height: 330px;
  right: -190px;
  bottom: -230px;
}

.closing-card > div,
.closing-card > a {
  position: relative;
  z-index: 2;
}

.closing-card .eyebrow {
  margin-bottom: 9px;
  color: #bdf8f0;
}

.closing-card .eyebrow span {
  background: #bdf8f0;
}

.closing-card h2 {
  margin-bottom: 9px;
  font-size: clamp(28px, 3.5vw, 42px);
  line-height: 1.25;
  letter-spacing: -0.035em;
}

.closing-card p:last-child {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
}

.btn-light {
  min-width: 186px;
  color: var(--blue-dark);
  background: var(--paper);
  box-shadow: 0 13px 28px rgba(4, 34, 81, 0.17);
  white-space: nowrap;
}

.site-footer {
  padding: 66px 0 24px;
  color: #96a7bb;
  background: #07111f;
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 80px;
  padding-bottom: 38px;
}

.brand-light .brand-logo {
  width: 126px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 50px;
}

.footer-nav div {
  display: grid;
  align-content: start;
  gap: 8px;
}

.footer-nav h3 {
  margin-bottom: 6px;
  color: var(--paper);
  font-size: 13px;
}

.footer-nav a {
  font-size: 12px;
  transition: color 0.2s ease;
}

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

.footer-bottom {
  margin-top: 28px;
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid #16263a;
  color: #65788e;
  font-size: 10px;
}

.footer-bottom p {
  margin-bottom: 0;
}

@media (max-width: 1050px) {
  .main-nav {
    gap: 18px;
  }

  .main-nav a:nth-last-child(2) {
    display: none;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(390px, 0.9fr);
    gap: 34px;
  }

  .download-card {
    padding: 27px 24px;
  }

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

  .step-card:not(:last-child)::after {
    display: none;
  }
}

@media (max-width: 900px) {
  .section {
    padding: 82px 0;
  }

  .nav-wrap {
    min-height: 70px;
  }

  .main-nav {
    display: none;
  }

  .nav-cta {
    margin-left: auto;
  }

  .hero {
    padding-top: 72px;
    padding-bottom: 0;
  }

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

  .hero-copy {
    max-width: 720px;
  }

  .hero-visual {
    width: min(100%, 650px);
    min-height: 480px;
    margin: 0 auto;
  }

  .hero-video {
    height: 480px;
  }

  .hero-strip {
    margin-top: 40px;
    align-items: flex-start;
    flex-direction: column;
  }

  .strip-items {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

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

  .download-card:last-child {
    grid-column: 1 / -1;
  }

  .features-layout,
  .safety-grid,
  .faq-layout {
    grid-template-columns: 1fr;
  }

  .sticky-heading {
    position: static;
  }

  .sticky-heading p {
    max-width: 720px;
  }

  .safety-copy > p:not(.eyebrow) {
    max-width: 720px;
  }

  .security-panel {
    width: min(100%, 620px);
  }

  .faq-layout {
    gap: 36px;
  }

  .faq-intro {
    max-width: 700px;
  }

  .faq-badge {
    max-width: 370px;
  }

  .closing-card {
    padding: 43px 38px;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(calc(100% - 30px), var(--container));
  }

  .section {
    padding: 68px 0;
  }

  .nav-cta {
    min-height: 42px;
    padding: 9px 15px;
  }

  .hero {
    padding-top: 53px;
    padding-bottom: 0;
  }

  .hero h2 {
    font-size: clamp(32px, 9.5vw, 42px);
  }

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

  .hero-actions .btn {
    justify-content: center;
  }

  .hero-points {
    gap: 11px 18px;
  }

  .hero-visual {
    min-height: 380px;
  }

  .hero-video {
    height: 380px;
  }

  .hero-strip {
    margin-top: 26px;
  }

  .strip-items {
    display: grid;
    grid-template-columns: repeat(2, auto);
    gap: 15px 28px;
  }

  .heading-center {
    margin-bottom: 37px;
    text-align: left;
  }

  .news-heading {
    margin-bottom: 34px;
  }

  .news-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .news-content {
    padding: 22px 21px 24px;
  }

  .heading-center .eyebrow {
    justify-content: flex-start;
  }

  .download-grid,
  .feature-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }

  .download-card:last-child {
    grid-column: auto;
  }

  .download-help {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .download-help div {
    width: calc(100% - 58px);
  }

  .download-help a {
    margin-left: 55px;
  }

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

  .step-card {
    min-height: 215px;
  }

  .safety-list article {
    padding-inline: 6px;
  }

  .security-panel {
    padding: 27px 22px;
  }

  .closing-section {
    padding: 54px 0;
  }

  .closing-card {
    padding: 36px 25px;
    align-items: flex-start;
    flex-direction: column;
    border-radius: 22px;
  }

  .btn-light {
    width: 100%;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .footer-nav {
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 5px;
  }
}

@media (max-width: 400px) {
  .brand-logo {
    width: 98px;
  }

  .brand-light .brand-logo {
    width: 110px;
  }

  .nav-cta {
    font-size: 12px;
  }

  .hero-points {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .strip-items {
    grid-template-columns: 1fr;
  }

  .section-heading h2,
  .safety-copy > h2 {
    font-size: 31px;
  }

  .download-card {
    padding: 25px 21px;
  }

  .faq-list summary {
    padding-inline: 17px;
    font-size: 14px;
  }

  .faq-list details p {
    margin-inline: 17px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* Black visual theme */
html {
  color-scheme: dark;
  background: #050505;
}

body {
  color: var(--text);
  background: #050505;
}

.site-header {
  background: rgba(5, 5, 5, 0.93);
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

.main-nav a {
  color: #f5f5f0;
}

.main-nav {
  color: #989891;
}

.main-nav a::after {
  background: var(--blue);
}

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

.nav-cta {
  color: #050505;
  background: #f5f5f0;
  border: 1px solid #f5f5f0;
}

.nav-cta:hover {
  color: #050505;
  background: var(--blue);
  border-color: var(--blue);
}

.hero {
  background:
    radial-gradient(circle at 82% 18%, rgba(215, 255, 57, 0.12), transparent 24%),
    radial-gradient(circle at 12% 72%, rgba(255, 255, 255, 0.055), transparent 25%),
    linear-gradient(132deg, #050505 0%, #0b0b0b 52%, #111111 100%);
}

.hero::before {
  opacity: 0.55;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
}

.hero-orb-one {
  background: radial-gradient(circle, rgba(215, 255, 57, 0.16), transparent 68%);
}

.hero-orb-two {
  background: radial-gradient(circle, rgba(255, 255, 255, 0.07), transparent 70%);
}

.eyebrow {
  color: var(--blue);
}

.eyebrow > span {
  background: var(--blue);
}

.hero h2,
.section-heading h2,
.safety-copy > h2 {
  color: #f5f5f0;
}

.hero h2 em {
  color: #f5f5f0;
  background: none;
  -webkit-text-fill-color: currentColor;
}

.hero-lead,
.section-heading > p:last-child,
.section-heading > h2 + p,
.safety-copy > p:not(.eyebrow) {
  color: #a6a69e;
}

.btn-primary {
  color: #050505;
  background: var(--blue);
  box-shadow: 0 14px 34px rgba(215, 255, 57, 0.16);
}

.btn-primary:hover {
  background: #e6ff78;
  box-shadow: 0 18px 42px rgba(215, 255, 57, 0.22);
}

.btn-secondary {
  color: #f5f5f0;
  background: rgba(255, 255, 255, 0.06);
  border-color: #3d3d3d;
}

.btn-secondary:hover {
  color: #050505;
  background: #f5f5f0;
}

.hero-points {
  color: #c2c2bc;
}

.hero-points span,
.download-card li::before {
  color: #050505;
  background: var(--blue);
}

.hero-strip {
  border-top-color: #2b2b2b;
}

.hero-strip p,
.strip-items {
  color: #a6a69e;
}

.strip-items b {
  color: var(--blue);
}

.download-section,
.safety-section,
.closing-section {
  background: #050505;
}

.download-card,
.feature-card,
.faq-badge,
.faq-list details {
  background: #121212;
  border-color: #2c2c2c;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.3);
}

.download-card:hover,
.faq-list details[open] {
  border-color: #59621f;
  box-shadow: 0 22px 52px rgba(0, 0, 0, 0.48);
}

.download-card.featured {
  background: linear-gradient(145deg, #1c1c1c, #101010 64%);
  border-color: #59621f;
}

.recommended {
  color: #050505;
  background: var(--blue);
}

.platform-icon,
.line-icon {
  color: var(--blue);
  background: #1d1d1d;
}

.windows-icon i,
.android-icon span,
.android-icon i,
.ios-icon span {
  background: var(--blue);
}

.android-icon span::before,
.android-icon span::after,
.ios-icon span {
  color: #050505;
}

.android-icon span::before,
.android-icon span::after {
  background: #050505;
}

.platform-copy h3,
.feature-card h3,
.download-help strong,
.safety-list h3,
.faq-badge strong,
.faq-list summary {
  color: #f5f5f0;
}

.platform-copy p,
.platform-copy span,
.download-card ul,
.feature-card p,
.download-help p,
.safety-list p,
.faq-badge small,
.faq-list details p {
  color: #a6a69e;
}

.card-link {
  color: var(--blue);
  background: #1c1c1c;
  border: 1px solid #303030;
}

.card-link b {
  background: #292929;
}

.card-link:hover {
  color: #050505;
  background: var(--blue);
  border-color: var(--blue);
}

.card-link:hover b {
  color: #050505;
  background: rgba(255, 255, 255, 0.35);
}

.download-help {
  background: #101010;
  border-color: #2c2c2c;
}

.help-icon {
  color: #050505;
  background: var(--blue);
  box-shadow: none;
}

.features-section,
.faq-section {
  background: #0b0b0b;
}

.features-section::before {
  background: radial-gradient(circle at top right, rgba(215, 255, 57, 0.09), transparent 66%);
}

.feature-card.accent-card {
  color: #f5f5f0;
  background: linear-gradient(145deg, #242424, #101010);
  border-color: #5a641f;
}

.feature-card.accent-card::after {
  background: rgba(215, 255, 57, 0.07);
}

.feature-number {
  color: #77776f;
}

.install-section {
  background: #080808;
}

.install-section::before {
  background: radial-gradient(circle, rgba(215, 255, 57, 0.11), transparent 68%);
}

.install-section::after {
  background: radial-gradient(circle, rgba(255, 255, 255, 0.05), transparent 68%);
}

.step-card {
  background: #121212;
  border-color: #2d2d2d;
}

.step-card:hover {
  background: #191919;
  border-color: #59621f;
}

.step-card:not(:last-child)::after {
  color: #050505;
  background: var(--blue);
  border-color: var(--blue);
}

.step-icon {
  color: var(--blue);
  background: rgba(215, 255, 57, 0.08);
  border-color: rgba(215, 255, 57, 0.2);
}

.install-note {
  color: #b5b5ad;
  background: rgba(215, 255, 57, 0.055);
  border-color: rgba(215, 255, 57, 0.17);
}

.install-note > span {
  color: var(--blue);
  border-color: var(--blue);
}

.safety-list article:hover {
  background: #111111;
  border-color: #2d2d2d;
}

.safety-list article > b {
  color: #050505;
  background: var(--blue);
}

.security-panel {
  background: linear-gradient(145deg, #171717, #080808);
  border: 1px solid #2e2e2e;
  box-shadow: 0 28px 68px rgba(0, 0, 0, 0.58);
}

.security-panel::before {
  background: radial-gradient(circle, rgba(215, 255, 57, 0.13), transparent 67%);
}

.security-top {
  border-bottom-color: #303030;
}

.security-shield {
  color: #050505;
  background: var(--blue);
}

.security-top span,
.security-panel li > span {
  color: var(--blue);
}

.security-panel li > span {
  background: rgba(215, 255, 57, 0.07);
  border-color: rgba(215, 255, 57, 0.2);
}

.security-panel > p {
  background: #121212;
  border-color: #303030;
}

.faq-badge > span {
  color: #050505;
  background: var(--blue);
}

.faq-list summary b {
  color: #050505;
  background: var(--blue);
}

.faq-list details p {
  border-top-color: #2b2b2b;
}

.closing-card {
  color: #f5f5f0;
  background:
    radial-gradient(circle at 80% 0%, rgba(215, 255, 57, 0.11), transparent 28%),
    linear-gradient(115deg, #171717, #080808);
  border: 1px solid #3a3a3a;
  box-shadow: 0 25px 62px rgba(0, 0, 0, 0.52);
}

.closing-card .eyebrow,
.closing-card p:last-child {
  color: #b9b9b1;
}

.closing-card .eyebrow span {
  background: var(--blue);
}

.btn-light {
  color: #050505;
  background: var(--blue);
  box-shadow: 0 13px 28px rgba(0, 0, 0, 0.3);
}

.site-footer {
  color: #96968e;
  background: #030303;
  border-top: 1px solid #202020;
}

.footer-bottom {
  border-top-color: #202020;
}

@media print {
  .site-header,
  .hero-visual,
  .hero-actions,
  .closing-section {
    display: none;
  }

  .section {
    padding: 36px 0;
  }

  .install-section,
  .site-footer {
    color: #111;
    background: #fff;
  }
}