:root {
    --page: #f2f5f3;
    --white: #ffffff;
  
    --dark: #071711;
    --dark-soft: #0d241a;
    --dark-panel: #133326;
  
    --ink: #10241b;
    --ink-soft: #5a6e64;
  
    --text: #f4faf6;
    --muted: #adc0b6;
  
    --green: #32ca78;
    --green-dark: #169856;
    --green-soft: #e2f8eb;
    --green-pale: #f0fbf4;
  
    --blue: #67b9ff;
  
    --line: #d7e4dc;
    --line-dark: rgba(159, 198, 176, 0.23);
  
    --danger: #e3a84e;
  
    --container: 1180px;
  
    --radius-large: 30px;
    --radius-medium: 18px;
  
    --shadow:
      0 24px 70px rgba(8, 40, 24, 0.13);
  }
  
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  body {
    margin: 0;
    overflow-x: hidden;
  
    color: var(--ink);
    background: var(--page);
  
    font-family:
      Inter,
      "PingFang SC",
      "Microsoft YaHei",
      system-ui,
      -apple-system,
      sans-serif;
  
    line-height: 1.7;
    text-rendering: optimizeLegibility;
  }
  
  img {
    display: block;
    max-width: 100%;
    height: auto;
  }
  
  a {
    color: inherit;
    text-decoration: none;
  }
  
  button,
  a {
    -webkit-tap-highlight-color: transparent;
  }
  
  :focus-visible {
    outline: 3px solid rgba(50, 202, 120, 0.48);
    outline-offset: 4px;
  }
  
  .container {
    width: min(
      calc(100% - 40px),
      var(--container)
    );
  
    margin-inline: auto;
  }
  
  .skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 999;
  
    padding: 10px 14px;
  
    color: var(--ink);
    background: var(--white);
  
    border-radius: 10px;
  
    transform: translateY(-160%);
  }
  
  .skip-link:focus {
    transform: translateY(0);
  }
  
  /* Header */
  
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
  
    color: var(--text);
    background: rgba(7, 23, 17, 0.92);
  
    border-bottom: 1px solid transparent;
  
    backdrop-filter: blur(18px);
  
    transition:
      background 180ms ease,
      border-color 180ms ease;
  }
  
  .site-header.is-scrolled {
    background: rgba(7, 23, 17, 0.98);
    border-color: var(--line-dark);
  }
  
  .header-inner {
    display: grid;
    grid-template-columns:
      auto
      1fr
      auto;
  
    align-items: center;
  
    gap: 28px;
  
    min-height: 72px;
  }
  
  .brand img {
    width: 132px;
    object-fit: contain;
  }
  
  .main-nav {
    justify-self: center;
  
    display: flex;
    gap: 27px;
  }
  
  .main-nav a {
    color: #c8d8cf;
    font-size: 14px;
  }
  
  .main-nav a:hover {
    color: var(--white);
  }
  
  .header-button,
  .primary-button {
    display: inline-flex;
  
    min-height: 46px;
  
    align-items: center;
    justify-content: center;
  
    padding: 0 21px;
  
    color: #03140c;
    background: linear-gradient(
      135deg,
      #69e7a4,
      var(--green)
    );
  
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
  
    font-weight: 850;
  
    box-shadow:
      0 14px 32px rgba(22, 152, 86, 0.23);
  
    transition:
      transform 180ms ease,
      box-shadow 180ms ease;
  }
  
  .header-button {
    min-height: 40px;
    padding-inline: 16px;
    font-size: 13px;
  }
  
  .header-button:hover,
  .primary-button:hover {
    transform: translateY(-2px);
  
    box-shadow:
      0 18px 40px rgba(22, 152, 86, 0.3);
  }
  
  .full-button {
    width: 100%;
  }
  
  /* Typography */
  
  h1,
  h2,
  h3,
  p {
    margin-top: 0;
  }
  
  h1 {
    max-width: 760px;
  
    margin-bottom: 22px;
  
    font-size: clamp(
      42px,
      5.3vw,
      72px
    );
  
    line-height: 1.06;
    letter-spacing: -0.048em;
  }
  
  h2 {
    margin-bottom: 14px;
  
    font-size: clamp(
      30px,
      3.3vw,
      46px
    );
  
    line-height: 1.18;
    letter-spacing: -0.035em;
  }
  
  h3 {
    line-height: 1.35;
  }
  
  .eyebrow {
    margin: 0 0 10px;
  
    color: var(--green-dark);
  
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }
  
  /* Hero */
  
  .hero {
    position: relative;
    overflow: hidden;
  
    padding: 76px 0 72px;
  
    color: var(--text);
  
    background:
      radial-gradient(
        circle at 78% 16%,
        rgba(50, 202, 120, 0.2),
        transparent 30%
      ),
      linear-gradient(
        135deg,
        #06150f,
        #0b2519
      );
  }
  
  .hero::before {
    content: "";
  
    position: absolute;
    top: 0;
    right: 0;
  
    width: 42%;
    height: 100%;
  
    opacity: 0.19;
  
    background-image:
      linear-gradient(
        rgba(50, 202, 120, 0.22) 1px,
        transparent 1px
      ),
      linear-gradient(
        90deg,
        rgba(50, 202, 120, 0.22) 1px,
        transparent 1px
      );
  
    background-size: 38px 38px;
  }
  
  .hero-layout {
    position: relative;
    z-index: 1;
  
    display: grid;
    grid-template-columns:
      minmax(0, 0.9fr)
      minmax(430px, 1.1fr);
  
    align-items: center;
  
    gap: 62px;
  }
  
  .android-label {
    display: inline-flex;
    align-items: center;
  
    gap: 10px;
  
    margin-bottom: 18px;
  
    color: #bfe9d0;
  
    font-size: 13px;
    font-weight: 850;
  }
  
  .android-mark {
    position: relative;
  
    width: 24px;
    height: 18px;
  
    background: var(--green);
    border-radius: 8px 8px 5px 5px;
  }
  
  .android-mark::before,
  .android-mark::after {
    content: "";
  
    position: absolute;
    top: -5px;
  
    width: 2px;
    height: 7px;
  
    background: var(--green);
  }
  
  .android-mark::before {
    left: 5px;
    transform: rotate(-28deg);
  }
  
  .android-mark::after {
    right: 5px;
    transform: rotate(28deg);
  }
  
  .hero-description {
    max-width: 690px;
  
    margin-bottom: 28px;
  
    color: #c4d6cc;
    font-size: 18px;
  }
  
  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
  
    gap: 14px;
  }
  
  .outline-button {
    display: inline-flex;
  
    min-height: 46px;
  
    align-items: center;
    justify-content: center;
  
    padding: 0 20px;
  
    color: #d9e8df;
  
    border: 1px solid rgba(198, 225, 209, 0.28);
    border-radius: 12px;
  
    font-weight: 800;
  }
  
  .outline-button:hover {
    color: var(--white);
    border-color: rgba(50, 202, 120, 0.7);
  }
  
  .hero-meta {
    display: flex;
    flex-wrap: wrap;
  
    gap: 32px;
  
    margin-top: 34px;
    padding-top: 23px;
  
    border-top: 1px solid var(--line-dark);
  }
  
  .hero-meta span,
  .hero-meta strong {
    display: block;
  }
  
  .hero-meta span {
    color: #8eaa9b;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.08em;
  }
  
  .hero-meta strong {
    margin-top: 3px;
    color: #e8f2ec;
    font-size: 14px;
  }
  
  /* Android console */
  
  .android-console {
    overflow: hidden;
  
    border: 1px solid rgba(161, 208, 182, 0.25);
    border-radius: var(--radius-large);
  
    background: rgba(13, 36, 26, 0.92);
  
    box-shadow:
      0 30px 80px rgba(0, 0, 0, 0.3);
  }
  
  .console-top {
    display: flex;
    min-height: 72px;
  
    align-items: center;
    justify-content: space-between;
  
    gap: 20px;
  
    padding: 0 24px;
  
    border-bottom: 1px solid var(--line-dark);
  }
  
  .console-title {
    display: flex;
    align-items: center;
  
    gap: 12px;
  }
  
  .console-icon {
    position: relative;
  
    width: 34px;
    height: 28px;
  
    background: var(--green);
    border-radius: 11px 11px 7px 7px;
  }
  
  .console-icon::before,
  .console-icon::after {
    content: "";
  
    position: absolute;
    top: -6px;
  
    width: 2px;
    height: 8px;
  
    background: var(--green);
  }
  
  .console-icon::before {
    left: 8px;
    transform: rotate(-28deg);
  }
  
  .console-icon::after {
    right: 8px;
    transform: rotate(28deg);
  }
  
  .console-title small,
  .console-title strong {
    display: block;
  }
  
  .console-title small {
    color: #86a394;
  }
  
  .console-title strong {
    margin-top: 1px;
    color: var(--white);
  }
  
  .console-state {
    padding: 7px 11px;
  
    color: #c9f6dc;
    background: rgba(50, 202, 120, 0.1);
  
    border: 1px solid rgba(50, 202, 120, 0.28);
    border-radius: 999px;
  
    font-size: 11px;
    font-weight: 850;
  }
  
  .device-screen {
    display: grid;
    grid-template-columns:
      minmax(220px, 0.82fr)
      minmax(0, 1.18fr);
  
    align-items: center;
  
    gap: 28px;
  
    padding: 28px;
  }
  
  .phone-shell {
    width: min(230px, 100%);
    margin-inline: auto;
  
    padding: 10px;
  
    border: 2px solid #49665a;
    border-radius: 34px;
  
    background: #050d09;
  
    box-shadow:
      0 18px 40px rgba(0, 0, 0, 0.33);
  }
  
  .phone-speaker {
    width: 52px;
    height: 5px;
  
    margin: 2px auto 9px;
  
    background: #263b31;
    border-radius: 999px;
  }
  
  .phone-display {
    min-height: 350px;
  
    padding: 18px 16px;
  
    border-radius: 25px;
  
    background:
      radial-gradient(
        circle at top,
        rgba(50, 202, 120, 0.22),
        transparent 31%
      ),
      linear-gradient(
        180deg,
        #123827,
        #07150f
      );
  }
  
  .display-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
  
    color: #bfd5c8;
    font-size: 11px;
  }
  
  .display-head b {
    padding: 4px 8px;
  
    color: #091a11;
    background: var(--green);
  
    border-radius: 999px;
  
    font-size: 9px;
  }
  
  .download-graphic {
    display: flex;
    min-height: 220px;
  
    align-items: center;
    justify-content: center;
    flex-direction: column;
  
    text-align: center;
  }
  
  .download-arrow {
    display: grid;
  
    width: 72px;
    height: 72px;
  
    place-items: center;
  
    margin-bottom: 18px;
  
    color: #05150d;
    background: var(--green);
  
    border-radius: 22px;
  
    font-size: 38px;
    font-weight: 950;
  
    box-shadow:
      0 14px 32px rgba(50, 202, 120, 0.22);
  }
  
  .download-graphic strong {
    font-size: 15px;
  }
  
  .download-graphic small {
    margin-top: 6px;
    color: #9eb4a8;
  }
  
  .download-progress {
    overflow: hidden;
  
    height: 6px;
  
    background: rgba(255, 255, 255, 0.08);
    border-radius: 999px;
  }
  
  .download-progress span {
    display: block;
  
    width: 64%;
    height: 100%;
  
    background: linear-gradient(
      90deg,
      var(--green),
      #7be7aa
    );
  
    border-radius: inherit;
  }
  
  .display-status {
    display: flex;
    align-items: center;
  
    gap: 8px;
  
    margin-top: 12px;
  
    color: #a8bbae;
    font-size: 10px;
  }
  
  .display-status i {
    width: 7px;
    height: 7px;
  
    background: var(--danger);
    border-radius: 50%;
  }
  
  .system-panel {
    display: grid;
    gap: 10px;
  }
  
  .system-panel > div {
    display: grid;
    grid-template-columns:
      minmax(82px, 0.75fr)
      1fr
      auto;
  
    align-items: center;
  
    gap: 12px;
  
    padding: 14px 16px;
  
    border: 1px solid var(--line-dark);
    border-radius: 12px;
  
    background: rgba(255, 255, 255, 0.035);
  }
  
  .system-panel span {
    color: #879e91;
    font-size: 11px;
  }
  
  .system-panel strong {
    color: #dce9e1;
    font-size: 13px;
  }
  
  .system-panel b {
    color: #91ae9e;
    font-size: 10px;
  }
  
  .system-panel .status-ok {
    color: var(--green);
  }
  
  .console-bottom {
    display: flex;
    min-height: 60px;
  
    align-items: center;
    justify-content: space-between;
  
    gap: 20px;
  
    padding: 0 24px;
  
    color: #8fa69a;
  
    border-top: 1px solid var(--line-dark);
  
    font-size: 11px;
  }
  
  .console-bottom a {
    color: var(--green);
    font-weight: 850;
  }
  
  /* Quick check */
  
  .quick-check {
    color: var(--text);
    background: #0d271b;
  
    border-top: 1px solid var(--line-dark);
    border-bottom: 1px solid var(--line-dark);
  }
  
  .quick-check-grid {
    display: grid;
    grid-template-columns:
      repeat(4, 1fr);
  }
  
  .quick-check-grid > div {
    display: flex;
    min-height: 76px;
  
    align-items: center;
  
    gap: 12px;
  
    padding: 0 22px;
  
    border-right: 1px solid var(--line-dark);
  }
  
  .quick-check-grid > div:last-child {
    border-right: 0;
  }
  
  .quick-check-grid span {
    color: var(--green);
    font-size: 12px;
    font-weight: 950;
  }
  
  .quick-check-grid strong {
    font-size: 13px;
  }
  
  /* General sections */
  
  .section {
    padding: 96px 0;
  }
  
  .section-heading {
    max-width: 790px;
    margin-bottom: 46px;
  }
  
  .section-heading > p:last-child {
    color: var(--ink-soft);
  }
  
  .device-section,
  .permission-section,
  .file-section,
  .update-section,
  .related-section {
    color: var(--ink);
    background: var(--page);
  }
  
  .process-section,
  .troubleshooting-section,
  .faq-section {
    color: var(--text);
    background: var(--dark);
  }
  
  .experience-section {
    color: var(--ink);
    background: var(--white);
  }
  
  /* Device check */
  
  .device-check-layout {
    display: grid;
    grid-template-columns:
      minmax(0, 1.15fr)
      minmax(300px, 0.85fr);
  
    align-items: stretch;
  
    gap: 26px;
  }
  
  .device-check-main {
    overflow: hidden;
  
    border: 1px solid var(--line);
    border-radius: var(--radius-large);
  
    background: var(--white);
  }
  
  .check-title {
    display: flex;
    align-items: center;
  
    gap: 14px;
  
    padding: 23px 26px;
  
    background: var(--green-pale);
    border-bottom: 1px solid var(--line);
  }
  
  .check-pulse {
    width: 14px;
    height: 14px;
  
    background: var(--green);
    border-radius: 50%;
  
    box-shadow:
      0 0 0 8px rgba(50, 202, 120, 0.12);
  }
  
  .check-title small,
  .check-title strong {
    display: block;
  }
  
  .check-title small {
    color: var(--green-dark);
    font-size: 11px;
    font-weight: 850;
  }
  
  .device-check-list {
    margin: 0;
    padding: 0;
  
    list-style: none;
  }
  
  .device-check-list li {
    display: grid;
    grid-template-columns: 48px 1fr;
  
    gap: 18px;
  
    padding: 24px 26px;
  
    border-bottom: 1px solid var(--line);
  }
  
  .device-check-list li:last-child {
    border-bottom: 0;
  }
  
  .device-check-list li > span {
    color: var(--green-dark);
    font-size: 13px;
    font-weight: 950;
  }
  
  .device-check-list h3 {
    margin-bottom: 6px;
  }
  
  .device-check-list p {
    margin: 0;
    color: var(--ink-soft);
  }
  
  .android-badge-panel {
    overflow: hidden;
  
    color: var(--text);
    background:
      radial-gradient(
        circle at top,
        rgba(50, 202, 120, 0.25),
        transparent 35%
      ),
      var(--dark);
  
    border-radius: var(--radius-large);
  
    box-shadow: var(--shadow);
  }
  
  .android-badge-panel img {
    width: 100%;
    height: 330px;
  
    padding: 24px;
  
    object-fit: contain;
  }
  
  .badge-copy {
    padding: 24px;
  
    border-top: 1px solid var(--line-dark);
  }
  
  .badge-copy strong {
    display: block;
    margin-bottom: 8px;
  }
  
  .badge-copy p {
    margin: 0;
    color: var(--muted);
  }
  
  /* Process */
  
  .process-heading > p:last-child,
  .troubleshooting-heading > p:last-child,
  .faq-heading > p:last-child {
    color: var(--muted);
  }
  
  .process-board {
    display: grid;
    grid-template-columns:
      minmax(0, 1.25fr)
      minmax(300px, 0.75fr);
  
    gap: 48px;
  }
  
  .process-track {
    position: relative;
  }
  
  .process-track::before {
    content: "";
  
    position: absolute;
    top: 23px;
    bottom: 24px;
    left: 24px;
  
    width: 1px;
  
    background: linear-gradient(
      var(--green),
      rgba(50, 202, 120, 0.06)
    );
  }
  
  .process-track article {
    position: relative;
  
    display: grid;
    grid-template-columns: 50px 1fr;
  
    gap: 20px;
  
    padding-bottom: 31px;
  }
  
  .process-number {
    position: relative;
    z-index: 1;
  
    display: grid;
  
    width: 48px;
    height: 48px;
  
    place-items: center;
  
    color: #05150d;
    background: var(--green);
  
    border-radius: 16px;
  
    font-size: 12px;
    font-weight: 950;
  }
  
  .process-content {
    padding: 3px 0 0;
  }
  
  .process-content small {
    color: var(--green);
    font-weight: 850;
  }
  
  .process-content h3 {
    margin: 3px 0 6px;
  }
  
  .process-content p {
    margin: 0;
    color: var(--muted);
  }
  
  .download-card {
    align-self: start;
  
    overflow: hidden;
  
    border: 1px solid var(--line-dark);
    border-top: 4px solid var(--green);
    border-radius: 20px;
  
    background: var(--dark-soft);
  }
  
  .download-card-head {
    display: flex;
    align-items: center;
  
    gap: 14px;
  
    padding: 24px;
  
    border-bottom: 1px solid var(--line-dark);
  }
  
  .download-card-icon {
    display: grid;
  
    width: 48px;
    height: 48px;
  
    place-items: center;
  
    color: #06160e;
    background: var(--green);
  
    border-radius: 14px;
  
    font-size: 26px;
    font-weight: 950;
  }
  
  .download-card-head small,
  .download-card-head strong {
    display: block;
  }
  
  .download-card-head small {
    color: var(--muted);
  }
  
  .download-card-info {
    padding: 8px 24px 20px;
  }
  
  .download-card-info > div {
    display: flex;
    align-items: center;
    justify-content: space-between;
  
    gap: 18px;
  
    padding: 14px 0;
  
    border-bottom: 1px solid var(--line-dark);
  }
  
  .download-card-info span {
    color: var(--muted);
    font-size: 12px;
  }
  
  .download-card-info strong {
    text-align: right;
    font-size: 12px;
  }
  
  .download-card .primary-button {
    width: calc(100% - 48px);
    margin: 0 24px;
  }
  
  .download-card > p {
    margin: 16px 24px 24px;
  
    color: #8fa79a;
    font-size: 11px;
  }
  
  /* Permission */
  
  .permission-layout,
  .file-layout,
  .experience-layout {
    display: grid;
    grid-template-columns:
      minmax(0, 1fr)
      minmax(360px, 0.95fr);
  
    align-items: center;
  
    gap: 64px;
  }
  
  .permission-copy > p:not(.eyebrow),
  .file-copy > p:not(.eyebrow),
  .experience-copy > p:not(.eyebrow) {
    color: var(--ink-soft);
  }
  
  .permission-notice {
    margin-top: 28px;
    padding: 19px 21px;
  
    border-left: 4px solid var(--danger);
    background: #fff9ed;
  }
  
  .permission-notice strong {
    color: #a66d14;
  }
  
  .permission-notice p {
    margin: 5px 0 0;
    color: #735d39;
  }
  
  .permission-console {
    overflow: hidden;
  
    border: 1px solid var(--line);
    border-radius: 24px;
  
    background: var(--white);
  
    box-shadow: var(--shadow);
  }
  
  .permission-row {
    display: flex;
    min-height: 84px;
  
    align-items: center;
    justify-content: space-between;
  
    gap: 22px;
  
    padding: 18px 22px;
  
    border-bottom: 1px solid var(--line);
  }
  
  .permission-row > div {
    display: flex;
    align-items: center;
  
    gap: 14px;
  }
  
  .permission-icon {
    position: relative;
  
    display: inline-grid;
  
    width: 42px;
    height: 42px;
  
    place-items: center;
  
    background: var(--green-soft);
    border-radius: 12px;
  }
  
  .permission-icon::before {
    color: var(--green-dark);
    font-size: 10px;
    font-weight: 950;
  }
  
  .browser-icon::before {
    content: "WEB";
  }
  
  .file-icon::before {
    content: "FILE";
  }
  
  .install-icon::before {
    content: "APP";
  }
  
  .network-icon::before {
    content: "NET";
  }
  
  .permission-row strong,
  .permission-row small {
    display: block;
  }
  
  .permission-row small {
    margin-top: 2px;
    color: var(--ink-soft);
  }
  
  .switch-control {
    position: relative;
  
    width: 44px;
    height: 25px;
  
    flex-shrink: 0;
  
    background: #cbd8d0;
    border-radius: 999px;
  }
  
  .switch-control i {
    position: absolute;
    top: 4px;
    left: 4px;
  
    width: 17px;
    height: 17px;
  
    background: var(--white);
    border-radius: 50%;
  
    box-shadow:
      0 2px 7px rgba(0, 0, 0, 0.14);
  }
  
  .switch-control.active {
    background: var(--green);
  }
  
  .switch-control.active i {
    left: 23px;
  }
  
  .console-caption {
    margin: 0;
    padding: 14px 22px;
  
    color: var(--ink-soft);
    background: #f7faf8;
  
    font-size: 11px;
  }
  
  /* File browser */
  
  .file-section {
    background: #eaf2ed;
  }
  
  .file-layout {
    grid-template-columns:
      minmax(360px, 0.95fr)
      minmax(0, 1fr);
  }
  
  .file-browser {
    overflow: hidden;
  
    border: 1px solid #cbdacf;
    border-radius: 22px;
  
    background: var(--white);
  
    box-shadow: var(--shadow);
  }
  
  .file-browser-head {
    display: flex;
    min-height: 56px;
  
    align-items: center;
    justify-content: space-between;
  
    gap: 20px;
  
    padding: 0 20px;
  
    color: #c7d9cd;
    background: #13281c;
  }
  
  .file-browser-head > div {
    display: flex;
    gap: 6px;
  }
  
  .file-browser-head span {
    width: 8px;
    height: 8px;
  
    background: #789184;
    border-radius: 50%;
  }
  
  .file-browser-head strong {
    font-size: 12px;
  }
  
  .file-path {
    padding: 12px 18px;
  
    color: var(--ink-soft);
    background: #f4f8f5;
  
    border-bottom: 1px solid var(--line);
  
    font-size: 12px;
  }
  
  .file-list {
    padding: 8px 18px 18px;
  }
  
  .folder-row {
    display: grid;
    grid-template-columns: auto 1fr auto;
  
    align-items: center;
  
    gap: 14px;
  
    padding: 16px 0;
  
    border-bottom: 1px solid var(--line);
  }
  
  .folder-icon {
    position: relative;
  
    width: 36px;
    height: 27px;
  
    background: #f1c85e;
    border-radius: 5px;
  }
  
  .folder-icon::before {
    content: "";
  
    position: absolute;
    top: -5px;
    left: 4px;
  
    width: 15px;
    height: 7px;
  
    background: #e7b943;
    border-radius: 4px 4px 0 0;
  }
  
  .file-symbol {
    display: grid;
  
    width: 38px;
    height: 38px;
  
    place-items: center;
  
    color: var(--green-dark);
    background: var(--green-soft);
  
    border-radius: 9px;
  
    font-size: 9px;
    font-weight: 950;
  }
  
  .folder-row strong,
  .folder-row small {
    display: block;
  }
  
  .folder-row small {
    margin-top: 2px;
    color: var(--ink-soft);
  }
  
  .folder-row b {
    color: var(--green-dark);
    font-size: 11px;
  }
  
  .plain-steps {
    margin: 28px 0 0;
    padding: 0;
  
    list-style: none;
  
    border-top: 1px solid #cbdacf;
  }
  
  .plain-steps li {
    position: relative;
  
    padding: 14px 0 14px 29px;
  
    border-bottom: 1px solid #cbdacf;
  }
  
  .plain-steps li::before {
    content: "✓";
  
    position: absolute;
    left: 0;
  
    color: var(--green-dark);
    font-weight: 950;
  }
  
  /* Experience */
  
  .experience-layout {
    grid-template-columns:
      minmax(0, 0.9fr)
      minmax(380px, 1.1fr);
  }
  
  .experience-stats {
    display: grid;
    grid-template-columns:
      repeat(3, 1fr);
  
    margin-top: 30px;
  
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }
  
  .experience-stats > div {
    padding: 18px 12px 18px 0;
  }
  
  .experience-stats span,
  .experience-stats strong {
    display: block;
  }
  
  .experience-stats span {
    color: var(--ink-soft);
    font-size: 11px;
  }
  
  .experience-stats strong {
    margin-top: 3px;
    font-size: 14px;
  }
  
  .experience-image {
    padding: 22px;
  
    border: 1px solid var(--line);
    border-radius: var(--radius-large);
  
    background: linear-gradient(
      145deg,
      #f6fbf8,
      #e4f3e9
    );
  }
  
  .experience-image img {
    width: 100%;
    max-height: 520px;
  
    object-fit: contain;
  }
  
  /* Troubleshooting */
  
  .diagnostic-board {
    display: grid;
    grid-template-columns:
      minmax(220px, 0.65fr)
      minmax(0, 1.35fr);
  
    gap: 34px;
  }
  
  .diagnostic-nav {
    align-self: start;
  
    overflow: hidden;
  
    border: 1px solid var(--line-dark);
    border-radius: 18px;
  }
  
  .diagnostic-nav a {
    display: grid;
    grid-template-columns: 42px 1fr;
  
    align-items: center;
  
    min-height: 66px;
  
    border-bottom: 1px solid var(--line-dark);
  
    color: #c6d7cd;
  
    font-size: 13px;
  }
  
  .diagnostic-nav a:last-child {
    border-bottom: 0;
  }
  
  .diagnostic-nav a:hover {
    background: rgba(50, 202, 120, 0.07);
  }
  
  .diagnostic-nav span {
    display: grid;
  
    height: 100%;
  
    place-items: center;
  
    color: var(--green);
  
    border-right: 1px solid var(--line-dark);
  
    font-size: 11px;
    font-weight: 950;
  }
  
  .diagnostic-content {
    display: grid;
    gap: 16px;
  }
  
  .diagnostic-content article {
    padding: 24px;
  
    border: 1px solid var(--line-dark);
    border-radius: 16px;
  
    background: var(--dark-soft);
  }
  
  .problem-head {
    display: flex;
    align-items: center;
  
    gap: 15px;
  }
  
  .problem-head > span {
    display: grid;
  
    width: 42px;
    height: 42px;
  
    place-items: center;
  
    color: var(--green);
    background: rgba(50, 202, 120, 0.09);
  
    border-radius: 12px;
  
    font-size: 11px;
    font-weight: 950;
  }
  
  .problem-head small {
    color: var(--green);
    font-weight: 800;
  }
  
  .problem-head h3 {
    margin: 2px 0 0;
  }
  
  .diagnostic-content ul {
    display: grid;
    grid-template-columns:
      repeat(2, 1fr);
  
    gap: 9px 28px;
  
    margin: 20px 0 0;
    padding: 0;
  
    list-style: none;
  }
  
  .diagnostic-content li {
    position: relative;
  
    padding-left: 19px;
  
    color: var(--muted);
    font-size: 13px;
  }
  
  .diagnostic-content li::before {
    content: "";
  
    position: absolute;
    top: 10px;
    left: 0;
  
    width: 6px;
    height: 6px;
  
    background: var(--green);
    border-radius: 50%;
  }
  
  /* Update */
  
  .update-section {
    background: var(--green-soft);
    border-top: 1px solid #c6e9d3;
    border-bottom: 1px solid #c6e9d3;
  }
  
  .update-layout {
    display: flex;
  
    align-items: center;
    justify-content: space-between;
  
    gap: 50px;
  }
  
  .update-layout > div:first-child {
    max-width: 760px;
  }
  
  .update-layout p:not(.eyebrow) {
    margin-bottom: 0;
    color: var(--ink-soft);
  }
  
  .update-actions {
    display: flex;
    align-items: center;
  
    gap: 16px;
  
    flex-shrink: 0;
  }
  
  .text-button {
    color: var(--green-dark);
    font-weight: 850;
  }
  
  .text-button:hover {
    text-decoration: underline;
    text-underline-offset: 5px;
  }
  
  /* FAQ */
  
  .faq-layout {
    display: grid;
    grid-template-columns:
      minmax(260px, 0.7fr)
      minmax(0, 1.3fr);
  
    gap: 56px;
  }
  
  .faq-list {
    border-top: 1px solid var(--line-dark);
  }
  
  .faq-list details {
    border-bottom: 1px solid var(--line-dark);
  }
  
  .faq-list summary {
    position: relative;
  
    padding: 22px 48px 22px 0;
  
    color: var(--white);
  
    cursor: pointer;
    list-style: none;
  
    font-weight: 850;
  }
  
  .faq-list summary::-webkit-details-marker {
    display: none;
  }
  
  .faq-list summary::after {
    content: "+";
  
    position: absolute;
    top: 19px;
    right: 4px;
  
    color: var(--green);
  
    font-size: 25px;
    line-height: 1;
  }
  
  .faq-list details[open] summary::after {
    content: "−";
  }
  
  .faq-list details p {
    margin: 0;
  
    padding: 0 42px 22px 0;
  
    color: var(--muted);
  }
  
  /* Related */
  
  .related-section {
    padding-top: 90px;
    padding-bottom: 90px;
  }
  
  .related-links {
    display: grid;
    grid-template-columns:
      repeat(3, 1fr);
  
    gap: 14px;
  }
  
  .related-links a {
    display: flex;
    min-height: 94px;
  
    justify-content: center;
    flex-direction: column;
  
    padding: 18px 20px;
  
    background: var(--white);
    border: 1px solid var(--line);
    border-left: 4px solid var(--green);
  
    transition:
      transform 160ms ease,
      border-color 160ms ease;
  }
  
  .related-links a:hover {
    transform: translateY(-3px);
    border-color: #9fd9b7;
  }
  
  .related-links span,
  .related-links strong {
    display: block;
  }
  
  .related-links span {
    color: var(--green-dark);
    font-size: 11px;
    font-weight: 850;
  }
  
  .related-links strong {
    margin-top: 4px;
  }
  
  /* Bottom CTA */
  
  .bottom-cta {
    color: var(--text);
  
    background:
      radial-gradient(
        circle at 85% 20%,
        rgba(50, 202, 120, 0.26),
        transparent 31%
      ),
      var(--dark);
  }
  
  .bottom-cta-layout {
    display: flex;
    min-height: 250px;
  
    align-items: center;
    justify-content: space-between;
  
    gap: 46px;
  }
  
  .cta-tag {
    display: inline-block;
  
    margin-bottom: 10px;
  
    color: var(--green);
  
    font-size: 11px;
    font-weight: 950;
    letter-spacing: 0.14em;
  }
  
  .bottom-cta h2 {
    max-width: 790px;
    margin-bottom: 8px;
  }
  
  .bottom-cta p {
    margin-bottom: 0;
    color: var(--muted);
  }
  
  .bottom-cta-actions {
    display: flex;
    align-items: center;
  
    gap: 17px;
  
    flex-shrink: 0;
  }
  
  /* Footer */
  
  .site-footer {
    padding: 34px 0;
  
    color: #a4b8ac;
    background: #04110b;
  
    border-top: 1px solid var(--line-dark);
  }
  
  .footer-layout {
    display: grid;
    grid-template-columns:
      0.75fr
      1.55fr
      0.7fr;
  
    align-items: center;
  
    gap: 32px;
  }
  
  .footer-layout img {
    width: 120px;
    margin-bottom: 10px;
  }
  
  .footer-layout p {
    margin: 0;
    font-size: 13px;
  }
  
  .footer-layout p:last-child {
    text-align: right;
  }
  
  /* Back to top */
  
  .back-to-top {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 40;
  
    width: 44px;
    height: 44px;
  
    color: #06160e;
    background: var(--green);
  
    border: 0;
    border-radius: 50%;
  
    box-shadow:
      0 14px 34px rgba(0, 0, 0, 0.25);
  
    cursor: pointer;
  
    opacity: 0;
    pointer-events: none;
  
    transform: translateY(10px);
  
    transition:
      opacity 160ms ease,
      transform 160ms ease;
  }
  
  .back-to-top.is-visible {
    opacity: 1;
    pointer-events: auto;
  
    transform: translateY(0);
  }
  
  /* Tablet */
  
  @media (max-width: 980px) {
  
    .main-nav {
      display: none;
    }
  
    .hero-layout,
    .device-check-layout,
    .process-board,
    .permission-layout,
    .file-layout,
    .experience-layout,
    .diagnostic-board,
    .faq-layout {
      grid-template-columns: 1fr;
    }
  
    .hero-copy,
    .android-console {
      max-width: 780px;
    }
  
    .android-badge-panel {
      max-width: 650px;
    }
  
    .process-board {
      gap: 34px;
    }
  
    .download-card {
      max-width: 620px;
    }
  
    .file-browser {
      order: 2;
    }
  
    .diagnostic-nav {
      display: grid;
      grid-template-columns:
        repeat(2, 1fr);
    }
  
    .diagnostic-nav a {
      border-right: 1px solid var(--line-dark);
    }
  
    .update-layout,
    .bottom-cta-layout {
      align-items: flex-start;
      flex-direction: column;
    }
  
    .update-actions,
    .bottom-cta-actions {
      flex-wrap: wrap;
    }
  
    .footer-layout {
      grid-template-columns: 1fr;
    }
  
    .footer-layout p:last-child {
      text-align: left;
    }
  }
  
  /* Mobile */
  
  @media (max-width: 780px) {
  
    .container {
      width: min(
        calc(100% - 32px),
        var(--container)
      );
    }
  
    .header-inner {
      min-height: 64px;
      gap: 14px;
    }
  
    .brand img {
      width: 108px;
    }
  
    .header-button {
      min-height: 38px;
      padding-inline: 11px;
      font-size: 11px;
    }
  
    .hero {
      padding: 54px 0 48px;
    }
  
    h1 {
      font-size: clamp(
        38px,
        12vw,
        55px
      );
    }
  
    .device-screen {
      grid-template-columns: 1fr;
    }
  
    .system-panel > div {
      grid-template-columns:
        85px
        1fr
        auto;
    }
  
    .quick-check-grid {
      grid-template-columns:
        repeat(2, 1fr);
    }
  
    .quick-check-grid > div {
      border-bottom: 1px solid var(--line-dark);
    }
  
    .section {
      padding: 72px 0;
    }
  
    .diagnostic-nav {
      grid-template-columns: 1fr;
    }
  
    .diagnostic-content ul {
      grid-template-columns: 1fr;
    }
  
    .related-links {
      grid-template-columns:
        repeat(2, 1fr);
    }
  
    .experience-stats {
      grid-template-columns: 1fr;
    }
  
    .experience-stats > div {
      border-bottom: 1px solid var(--line);
    }
  }
  
  @media (max-width: 520px) {
  
    .container {
      width: min(
        calc(100% - 24px),
        var(--container)
      );
    }
  
    .header-inner {
      grid-template-columns:
        1fr
        auto;
    }
  
    .hero-description {
      font-size: 16px;
    }
  
    .hero-actions {
      align-items: stretch;
      flex-direction: column;
    }
  
    .hero-actions a {
      width: 100%;
    }
  
    .hero-meta {
      align-items: flex-start;
      flex-direction: column;
  
      gap: 12px;
    }
  
    .console-top,
    .console-bottom {
      align-items: flex-start;
      flex-direction: column;
  
      padding-block: 18px;
    }
  
    .device-screen {
      padding: 20px 14px;
    }
  
    .system-panel > div {
      grid-template-columns: 1fr;
    }
  
    .quick-check-grid {
      grid-template-columns: 1fr;
    }
  
    .quick-check-grid > div {
      border-right: 0;
    }
  
    .device-check-list li {
      grid-template-columns: 38px 1fr;
      padding-inline: 18px;
    }
  
    .android-badge-panel img {
      height: 260px;
    }
  
    .permission-row {
      align-items: flex-start;
    }
  
    .permission-row > div {
      align-items: flex-start;
    }
  
    .file-browser-head {
      align-items: flex-start;
      flex-direction: column;
  
      padding-block: 15px;
    }
  
    .folder-row {
      grid-template-columns: auto 1fr;
    }
  
    .folder-row b {
      grid-column: 2;
    }
  
    .related-links {
      grid-template-columns: 1fr;
    }
  
    .update-actions,
    .bottom-cta-actions {
      align-items: stretch;
      flex-direction: column;
    }
  
    .faq-list summary {
      padding-right: 36px;
    }
  
    .faq-list details p {
      padding-right: 0;
    }
  }
  
  @media (prefers-reduced-motion: reduce) {
  
    *,
    *::before,
    *::after {
      scroll-behavior: auto !important;
      transition: none !important;
    }
  }