:root {
    --page: #f2f4f7;
    --white: #ffffff;
    --soft-white: #fafbfc;
  
    --ink: #131921;
    --ink-soft: #5d6774;
  
    --dark: #121820;
    --dark-soft: #1b232e;
  
    --blue: #2679e8;
    --blue-dark: #155bb8;
    --blue-soft: #e9f2ff;
  
    --purple: #7b67ee;
    --green: #2cb980;
    --orange: #ec9a45;
  
    --line: #dce2e8;
    --line-dark: rgba(202, 216, 228, 0.22);
  
    --text: #f5f7fa;
    --muted: #aeb8c3;
  
    --container: 1180px;
  
    --radius-large: 32px;
    --radius-medium: 19px;
  
    --shadow:
      0 28px 80px rgba(21, 38, 60, 0.14);
  }
  
  *,
  *::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;
  }
  
  button {
    font: inherit;
  }
  
  :focus-visible {
    outline: 3px solid rgba(38, 121, 232, 0.42);
    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: 60;
  
    color: var(--ink);
  
    background: rgba(250, 251, 252, 0.86);
    border-bottom: 1px solid transparent;
  
    backdrop-filter: blur(22px);
  
    transition:
      background 180ms ease,
      border-color 180ms ease,
      box-shadow 180ms ease;
  }
  
  .site-header.is-scrolled {
    background: rgba(255, 255, 255, 0.96);
    border-color: var(--line);
  
    box-shadow:
      0 8px 30px rgba(19, 39, 63, 0.08);
  }
  
  .header-inner {
    display: grid;
    grid-template-columns:
      auto
      1fr
      auto;
  
    align-items: center;
  
    gap: 30px;
  
    min-height: 72px;
  }
  
  .brand img {
    width: 132px;
    object-fit: contain;
  }
  
  .main-nav {
    justify-self: center;
  
    display: flex;
    gap: 28px;
  }
  
  .main-nav a {
    color: #4f5c69;
    font-size: 14px;
  }
  
  .main-nav a:hover {
    color: var(--blue);
  }
  
  .header-button,
  .primary-button {
    display: inline-flex;
  
    min-height: 46px;
  
    align-items: center;
    justify-content: center;
  
    padding: 0 22px;
  
    color: var(--white);
    background: linear-gradient(
      135deg,
      #4694f2,
      var(--blue)
    );
  
    border: 1px solid rgba(255, 255, 255, 0.34);
    border-radius: 13px;
  
    font-weight: 850;
  
    box-shadow:
      0 14px 34px rgba(38, 121, 232, 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 42px rgba(38, 121, 232, 0.31);
  }
  
  .secondary-button {
    display: inline-flex;
  
    min-height: 46px;
  
    align-items: center;
    justify-content: center;
  
    padding: 0 21px;
  
    color: var(--ink);
    background: rgba(255, 255, 255, 0.7);
  
    border: 1px solid var(--line);
    border-radius: 13px;
  
    font-weight: 800;
  
    backdrop-filter: blur(10px);
  }
  
  .secondary-button:hover {
    border-color: #a6c8f2;
    background: var(--white);
  }
  
  .text-link {
    color: var(--blue-dark);
    font-weight: 850;
  }
  
  .text-link:hover {
    text-decoration: underline;
    text-underline-offset: 5px;
  }
  
  /* Typography */
  
  h1,
  h2,
  h3,
  p {
    margin-top: 0;
  }
  
  h1 {
    max-width: 760px;
  
    margin-bottom: 23px;
  
    font-size: clamp(
      42px,
      5.25vw,
      72px
    );
  
    line-height: 1.07;
    letter-spacing: -0.05em;
  }
  
  h2 {
    margin-bottom: 14px;
  
    font-size: clamp(
      30px,
      3.35vw,
      47px
    );
  
    line-height: 1.17;
    letter-spacing: -0.038em;
  }
  
  h3 {
    line-height: 1.35;
  }
  
  .eyebrow {
    margin: 0 0 10px;
  
    color: var(--blue);
  
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.13em;
    text-transform: uppercase;
  }
  
  /* Hero */
  
  .hero {
    position: relative;
    overflow: hidden;
  
    padding: 80px 0 76px;
  
    background:
      radial-gradient(
        circle at 18% 18%,
        rgba(90, 157, 242, 0.19),
        transparent 29%
      ),
      radial-gradient(
        circle at 84% 20%,
        rgba(123, 103, 238, 0.16),
        transparent 31%
      ),
      linear-gradient(
        180deg,
        #f9fbfd,
        #eef3f8
      );
  }
  
  .hero::before {
    content: "";
  
    position: absolute;
    top: -220px;
    right: -140px;
  
    width: 620px;
    height: 620px;
  
    border: 1px solid rgba(38, 121, 232, 0.14);
    border-radius: 50%;
  }
  
  .hero::after {
    content: "";
  
    position: absolute;
    top: -90px;
    right: 40px;
  
    width: 360px;
    height: 360px;
  
    border: 1px solid rgba(123, 103, 238, 0.12);
    border-radius: 50%;
  }
  
  .hero-layout {
    position: relative;
    z-index: 1;
  
    display: grid;
    grid-template-columns:
      minmax(0, 0.92fr)
      minmax(440px, 1.08fr);
  
    align-items: center;
  
    gap: 66px;
  }
  
  .hero-label {
    display: inline-flex;
  
    margin: 0 0 18px;
    padding: 8px 13px;
  
    color: var(--blue-dark);
    background: rgba(255, 255, 255, 0.72);
  
    border: 1px solid #cfe0f5;
    border-radius: 999px;
  
    font-size: 12px;
    font-weight: 850;
    letter-spacing: 0.08em;
  }
  
  .hero-description {
    max-width: 690px;
  
    margin-bottom: 29px;
  
    color: var(--ink-soft);
    font-size: 18px;
  }
  
  .hero-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
  
    gap: 14px;
  }
  
  .hero-facts {
    display: grid;
    grid-template-columns:
      repeat(3, 1fr);
  
    margin: 35px 0 0;
    padding-top: 22px;
  
    border-top: 1px solid #cfd9e3;
  }
  
  .hero-facts div {
    padding-right: 15px;
  }
  
  .hero-facts dt {
    color: #7b8794;
    font-size: 11px;
    font-weight: 800;
  }
  
  .hero-facts dd {
    margin: 3px 0 0;
  
    color: var(--ink);
    font-size: 13px;
    font-weight: 850;
  }
  
  /* CSS iOS devices */
  
  .ios-stage {
    position: relative;
  
    min-height: 560px;
  }
  
  .stage-glow {
    position: absolute;
    top: 70px;
    left: 50%;
  
    width: 430px;
    height: 350px;
  
    background:
      radial-gradient(
        circle,
        rgba(64, 139, 234, 0.23),
        transparent 68%
      );
  
    transform: translateX(-50%);
  }
  
  .iphone-device {
    position: absolute;
    z-index: 3;
    top: 10px;
    left: 12%;
  
    width: 230px;
    height: 480px;
  
    padding: 9px;
  
    background: #15191f;
  
    border: 2px solid #343a43;
    border-radius: 44px;
  
    box-shadow:
      0 38px 74px rgba(24, 48, 80, 0.28);
  
    transform: rotate(-7deg);
  }
  
  .iphone-island {
    position: absolute;
    z-index: 4;
    top: 17px;
    left: 50%;
  
    width: 78px;
    height: 22px;
  
    background: #090b0e;
    border-radius: 999px;
  
    transform: translateX(-50%);
  }
  
  .iphone-screen {
    display: flex;
    height: 100%;
  
    align-items: center;
    justify-content: center;
    flex-direction: column;
  
    padding: 22px;
  
    overflow: hidden;
  
    background:
      radial-gradient(
        circle at 50% 28%,
        rgba(85, 159, 249, 0.36),
        transparent 29%
      ),
      linear-gradient(
        165deg,
        #eff6ff,
        #dfe7f4 44%,
        #bdcae1
      );
  
    border-radius: 35px;
  }
  
  .screen-top {
    position: absolute;
    top: 21px;
    left: 25px;
    right: 25px;
  
    display: flex;
    align-items: center;
    justify-content: space-between;
  
    color: #11151a;
    font-size: 10px;
    font-weight: 850;
  }
  
  .screen-top > div {
    display: flex;
    gap: 3px;
  }
  
  .screen-top i {
    display: block;
  
    width: 5px;
    height: 5px;
  
    background: #11151a;
    border-radius: 50%;
  }
  
  .app-symbol {
    display: grid;
  
    width: 82px;
    height: 82px;
  
    place-items: center;
  
    margin-bottom: 17px;
  
    color: var(--white);
  
    background:
      linear-gradient(
        145deg,
        #2d8df0,
        #695ce5
      );
  
    border-radius: 23px;
  
    box-shadow:
      0 20px 40px rgba(55, 102, 191, 0.27);
  }
  
  .app-symbol span {
    font-size: 25px;
    font-weight: 950;
    letter-spacing: -0.08em;
  }
  
  .iphone-screen > strong {
    color: #151b23;
    font-size: 19px;
  }
  
  .iphone-screen > small {
    margin-top: 2px;
    color: #707b88;
  }
  
  .install-state {
    display: flex;
    align-items: center;
  
    gap: 8px;
  
    margin-top: 25px;
    padding: 8px 11px;
  
    color: #405265;
    background: rgba(255, 255, 255, 0.62);
  
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 999px;
  
    font-size: 10px;
  }
  
  .install-state span {
    width: 7px;
    height: 7px;
  
    background: var(--orange);
    border-radius: 50%;
  }
  
  .ipad-device {
    position: absolute;
    z-index: 2;
    right: 1%;
    bottom: 5px;
  
    width: 370px;
    height: 300px;
  
    padding: 9px;
  
    background: #262b32;
  
    border: 2px solid #424953;
    border-radius: 30px;
  
    box-shadow:
      0 34px 72px rgba(25, 46, 73, 0.23);
  
    transform: rotate(6deg);
  }
  
  .ipad-camera {
    position: absolute;
    top: 50%;
    left: 5px;
  
    width: 5px;
    height: 5px;
  
    background: #090b0e;
    border-radius: 50%;
  
    transform: translateY(-50%);
  }
  
  .ipad-screen {
    display: grid;
    grid-template-columns: 76px 1fr;
  
    height: 100%;
  
    overflow: hidden;
  
    background:
      linear-gradient(
        135deg,
        #eef3f8,
        #dbe5f0
      );
  
    border-radius: 22px;
  }
  
  .ipad-sidebar {
    display: flex;
  
    align-items: center;
    flex-direction: column;
  
    gap: 17px;
  
    padding-top: 26px;
  
    background: rgba(255, 255, 255, 0.52);
    border-right: 1px solid rgba(126, 147, 171, 0.19);
  }
  
  .sidebar-logo {
    display: grid;
  
    width: 36px;
    height: 36px;
  
    place-items: center;
  
    color: var(--white);
    background: linear-gradient(
      145deg,
      var(--blue),
      var(--purple)
    );
  
    border-radius: 10px;
  
    font-size: 12px;
    font-weight: 950;
  }
  
  .ipad-sidebar i {
    display: block;
  
    width: 30px;
    height: 7px;
  
    background: #c2cedc;
    border-radius: 999px;
  }
  
  .ipad-content {
    padding: 35px 28px;
  
    color: var(--ink);
  }
  
  .ipad-content small {
    color: var(--blue);
    font-weight: 850;
  }
  
  .ipad-content strong {
    display: block;
  
    margin-top: 3px;
  
    font-size: 20px;
  }
  
  .ipad-chart {
    display: flex;
    height: 105px;
  
    align-items: flex-end;
  
    gap: 10px;
  
    margin-top: 26px;
  }
  
  .ipad-chart span {
    width: 24px;
  
    background: linear-gradient(
      180deg,
      #69aaf7,
      #8f7ded
    );
  
    border-radius: 7px 7px 0 0;
  }
  
  .ipad-chart span:nth-child(1) {
    height: 45%;
  }
  
  .ipad-chart span:nth-child(2) {
    height: 75%;
  }
  
  .ipad-chart span:nth-child(3) {
    height: 58%;
  }
  
  .ipad-chart span:nth-child(4) {
    height: 90%;
  }
  
  .ipad-content p {
    margin: 14px 0 0;
  
    color: #6e7a88;
    font-size: 11px;
  }
  
  .floating-status {
    position: absolute;
    z-index: 5;
  
    min-width: 160px;
  
    padding: 13px 15px;
  
    background: rgba(255, 255, 255, 0.88);
  
    border: 1px solid rgba(255, 255, 255, 0.92);
    border-radius: 14px;
  
    box-shadow:
      0 18px 42px rgba(27, 54, 88, 0.16);
  
    backdrop-filter: blur(14px);
  }
  
  .floating-status span,
  .floating-status strong {
    display: block;
  }
  
  .floating-status span {
    color: var(--blue);
    font-size: 10px;
    font-weight: 900;
  }
  
  .floating-status strong {
    margin-top: 2px;
    font-size: 12px;
  }
  
  .status-one {
    top: 35px;
    right: 0;
  }
  
  .status-two {
    bottom: 24px;
    left: 5%;
  }
  
  /* Status strip */
  
  .status-strip {
    background: var(--white);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }
  
  .status-strip-grid {
    display: grid;
    grid-template-columns:
      repeat(3, 1fr);
  }
  
  .status-strip-grid > div {
    display: flex;
    min-height: 78px;
  
    align-items: center;
  
    gap: 13px;
  
    padding: 0 28px;
  
    border-right: 1px solid var(--line);
  }
  
  .status-strip-grid > div:last-child {
    border-right: 0;
  }
  
  .status-strip-grid > div > span {
    color: var(--blue);
    font-size: 12px;
    font-weight: 950;
  }
  
  .status-strip-grid strong,
  .status-strip-grid small {
    display: block;
  }
  
  .status-strip-grid strong {
    font-size: 13px;
  }
  
  .status-strip-grid small {
    color: var(--ink-soft);
  }
  
  /* General */
  
  .section {
    padding: 96px 0;
  }
  
  .section-heading {
    max-width: 790px;
    margin-bottom: 47px;
  }
  
  .section-heading > p:last-child {
    color: var(--ink-soft);
  }
  
  .section-heading.centered {
    margin-inline: auto;
    text-align: center;
  }
  
  .device-choice-section,
  .install-confirm-section,
  .update-section,
  .related-section {
    background: var(--page);
  }
  
  .system-section,
  .app-location-section {
    background: var(--white);
  }
  
  .install-section,
  .troubleshooting-section {
    color: var(--text);
    background: var(--dark);
  }
  
  .faq-section {
    background: #e9eef4;
  }
  
  /* Device choice */
  
  .device-choice-grid {
    display: grid;
    grid-template-columns:
      repeat(2, 1fr);
  
    gap: 24px;
  }
  
  .choice-panel {
    display: grid;
    grid-template-columns:
      minmax(180px, 0.72fr)
      minmax(0, 1.28fr);
  
    overflow: hidden;
  
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius-large);
  
    box-shadow:
      0 16px 45px rgba(22, 47, 76, 0.07);
  }
  
  .choice-visual {
    display: grid;
    min-height: 390px;
  
    place-items: center;
  
    padding: 26px;
  
    background:
      radial-gradient(
        circle at center,
        rgba(71, 143, 235, 0.2),
        transparent 55%
      ),
      #eaf1f8;
  }
  
  .ipad-choice .choice-visual {
    background:
      radial-gradient(
        circle at center,
        rgba(123, 103, 238, 0.17),
        transparent 55%
      ),
      #efedf9;
  }
  
  .mini-phone {
    width: 112px;
    height: 228px;
  
    padding: 7px;
  
    background: #161a20;
  
    border-radius: 25px;
  
    box-shadow:
      0 22px 42px rgba(30, 52, 78, 0.21);
  }
  
  .mini-phone > span {
    display: block;
  
    width: 38px;
    height: 7px;
  
    margin: 5px auto;
  
    background: #050608;
    border-radius: 999px;
  }
  
  .mini-phone > div {
    display: grid;
    height: calc(100% - 17px);
  
    place-items: center;
  
    background: linear-gradient(
      145deg,
      #dceafa,
      #b9cae0
    );
  
    border-radius: 19px;
  }
  
  .mini-phone b,
  .mini-tablet b {
    display: grid;
  
    width: 46px;
    height: 46px;
  
    place-items: center;
  
    color: var(--white);
    background: linear-gradient(
      145deg,
      var(--blue),
      var(--purple)
    );
  
    border-radius: 13px;
  
    font-size: 15px;
  }
  
  .mini-tablet {
    position: relative;
  
    width: 175px;
    height: 135px;
  
    padding: 7px;
  
    background: #252a31;
  
    border-radius: 18px;
  
    box-shadow:
      0 22px 42px rgba(30, 52, 78, 0.2);
  }
  
  .mini-tablet > span {
    position: absolute;
    top: 50%;
    left: 3px;
  
    width: 4px;
    height: 4px;
  
    background: #060709;
    border-radius: 50%;
  }
  
  .mini-tablet > div {
    display: grid;
    height: 100%;
  
    place-items: center;
  
    background: linear-gradient(
      145deg,
      #e7e3f8,
      #c9c3ea
    );
  
    border-radius: 12px;
  }
  
  .choice-content {
    padding: 34px 30px;
  }
  
  .choice-index {
    color: var(--blue);
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.12em;
  }
  
  .ipad-choice .choice-index {
    color: var(--purple);
  }
  
  .choice-content h3 {
    margin: 8px 0 12px;
    font-size: 25px;
  }
  
  .choice-content > p {
    color: var(--ink-soft);
  }
  
  .choice-content ul {
    margin: 24px 0;
    padding: 0;
  
    list-style: none;
  }
  
  .choice-content li {
    position: relative;
  
    padding: 8px 0 8px 22px;
  
    border-bottom: 1px solid var(--line);
  }
  
  .choice-content li::before {
    content: "";
  
    position: absolute;
    top: 17px;
    left: 0;
  
    width: 7px;
    height: 7px;
  
    background: var(--blue);
    border-radius: 50%;
  }
  
  .ipad-choice .choice-content li::before {
    background: var(--purple);
  }
  
  .choice-content a {
    color: var(--blue-dark);
    font-weight: 850;
  }
  
  .ipad-choice .choice-content a {
    color: #6250ce;
  }
  
  /* System settings */
  
  .system-layout {
    display: grid;
    grid-template-columns:
      minmax(0, 0.8fr)
      minmax(380px, 1.2fr);
  
    align-items: center;
  
    gap: 70px;
  }
  
  .system-copy > p:not(.eyebrow) {
    color: var(--ink-soft);
  }
  
  .settings-panel {
    overflow: hidden;
  
    border: 1px solid var(--line);
    border-radius: 27px;
  
    background: #f8f9fb;
  
    box-shadow: var(--shadow);
  }
  
  .settings-head {
    display: flex;
    min-height: 82px;
  
    align-items: center;
    justify-content: space-between;
  
    gap: 20px;
  
    padding: 0 24px;
  
    background: rgba(255, 255, 255, 0.88);
    border-bottom: 1px solid var(--line);
  }
  
  .settings-head > div {
    display: flex;
    align-items: center;
  
    gap: 14px;
  }
  
  .settings-icon {
    display: grid;
  
    width: 42px;
    height: 42px;
  
    place-items: center;
  
    color: var(--white);
    background: #858e99;
  
    border-radius: 11px;
  
    font-size: 20px;
  }
  
  .settings-head small,
  .settings-head strong {
    display: block;
  }
  
  .settings-head small {
    color: var(--ink-soft);
  }
  
  .check-badge {
    padding: 6px 10px;
  
    color: var(--blue-dark);
    background: var(--blue-soft);
  
    border-radius: 999px;
  
    font-size: 11px;
    font-weight: 900;
  }
  
  .settings-list {
    padding: 10px 20px 20px;
  }
  
  .setting-row {
    display: flex;
    min-height: 82px;
  
    align-items: center;
    justify-content: space-between;
  
    gap: 24px;
  
    padding: 14px 4px;
  
    border-bottom: 1px solid var(--line);
  }
  
  .setting-row > div {
    display: flex;
    align-items: center;
  
    gap: 14px;
  }
  
  .setting-symbol {
    display: grid;
  
    width: 42px;
    height: 42px;
  
    place-items: center;
  
    color: var(--blue-dark);
    background: var(--blue-soft);
  
    border-radius: 11px;
  
    font-size: 10px;
    font-weight: 950;
  }
  
  .setting-row strong,
  .setting-row small {
    display: block;
  }
  
  .setting-row small {
    color: var(--ink-soft);
  }
  
  .setting-row b {
    color: #8c97a3;
    font-size: 11px;
  }
  
  /* Install timeline */
  
  .install-heading > p:last-child {
    color: var(--muted);
  }
  
  .install-timeline {
    position: relative;
  }
  
  .install-timeline::before {
    content: "";
  
    position: absolute;
    top: 0;
    bottom: 0;
    left: 28px;
  
    width: 1px;
  
    background: linear-gradient(
      var(--blue),
      rgba(38, 121, 232, 0.08)
    );
  }
  
  .install-timeline article {
    position: relative;
  
    display: grid;
    grid-template-columns:
      58px
      minmax(0, 1fr)
      auto;
  
    align-items: start;
  
    gap: 24px;
  
    padding: 0 0 40px;
  }
  
  .timeline-marker {
    position: relative;
    z-index: 2;
  
    display: grid;
  
    width: 58px;
    height: 58px;
  
    place-items: center;
  
    background: var(--dark);
  }
  
  .timeline-marker span {
    display: grid;
  
    width: 47px;
    height: 47px;
  
    place-items: center;
  
    color: var(--white);
    background: linear-gradient(
      145deg,
      var(--blue),
      var(--purple)
    );
  
    border-radius: 15px;
  
    font-size: 12px;
    font-weight: 950;
  }
  
  .timeline-content {
    padding-top: 3px;
  }
  
  .timeline-content small {
    color: #7daff0;
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.11em;
  }
  
  .timeline-content h3 {
    margin: 3px 0 7px;
  }
  
  .timeline-content p {
    max-width: 720px;
  
    margin: 0;
  
    color: var(--muted);
  }
  
  .timeline-status {
    margin-top: 9px;
    padding: 7px 10px;
  
    color: #abcbed;
    background: rgba(38, 121, 232, 0.09);
  
    border: 1px solid rgba(84, 151, 235, 0.2);
    border-radius: 999px;
  
    font-size: 10px;
    font-weight: 850;
  }
  
  /* Confirmation */
  
  .confirm-layout,
  .app-location-layout {
    display: grid;
    grid-template-columns:
      minmax(380px, 0.95fr)
      minmax(0, 1.05fr);
  
    align-items: center;
  
    gap: 70px;
  }
  
  .confirm-window {
    overflow: hidden;
  
    border: 1px solid var(--line);
    border-radius: 26px;
  
    background: rgba(255, 255, 255, 0.87);
  
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
  }
  
  .confirm-window-head {
    position: relative;
  
    display: flex;
    min-height: 54px;
  
    align-items: center;
    justify-content: center;
  
    border-bottom: 1px solid var(--line);
  }
  
  .confirm-window-head > span {
    position: absolute;
    left: 18px;
  
    width: 11px;
    height: 11px;
  
    background: #ef6767;
    border-radius: 50%;
  
    box-shadow:
      19px 0 #eeb74e,
      38px 0 #5ecb77;
  }
  
  .confirm-window-head strong {
    font-size: 12px;
  }
  
  .confirm-window-body {
    padding: 32px;
  }
  
  .confirm-app {
    display: flex;
    align-items: center;
  
    gap: 14px;
  }
  
  .confirm-app > span {
    display: grid;
  
    width: 52px;
    height: 52px;
  
    place-items: center;
  
    color: var(--white);
    background: linear-gradient(
      145deg,
      var(--blue),
      var(--purple)
    );
  
    border-radius: 14px;
  
    font-weight: 950;
  }
  
  .confirm-app strong,
  .confirm-app small {
    display: block;
  }
  
  .confirm-app small {
    color: var(--ink-soft);
  }
  
  .confirm-window-body h3 {
    margin: 28px 0 10px;
    font-size: 24px;
  }
  
  .confirm-window-body > p {
    color: var(--ink-soft);
  }
  
  .confirm-info {
    margin-top: 25px;
  
    border-top: 1px solid var(--line);
  }
  
  .confirm-info > div {
    display: flex;
    align-items: center;
    justify-content: space-between;
  
    gap: 20px;
  
    padding: 13px 0;
  
    border-bottom: 1px solid var(--line);
  }
  
  .confirm-info span {
    color: var(--ink-soft);
    font-size: 12px;
  }
  
  .confirm-info strong {
    font-size: 12px;
  }
  
  .confirm-actions {
    display: flex;
    justify-content: flex-end;
  
    gap: 10px;
  
    margin-top: 26px;
  }
  
  .confirm-actions button {
    min-height: 39px;
  
    padding: 0 16px;
  
    color: var(--ink);
    background: #edf0f3;
  
    border: 0;
    border-radius: 10px;
  }
  
  .confirm-actions .confirm-primary {
    color: var(--white);
    background: var(--blue);
  }
  
  .confirm-copy > p:not(.eyebrow),
  .app-location-copy > p:not(.eyebrow) {
    color: var(--ink-soft);
  }
  
  .confirm-list,
  .location-steps {
    margin: 28px 0 0;
    padding: 0;
  
    list-style: none;
  
    border-top: 1px solid var(--line);
  }
  
  .confirm-list li,
  .location-steps li {
    position: relative;
  
    padding: 13px 0 13px 27px;
  
    border-bottom: 1px solid var(--line);
  }
  
  .confirm-list li::before,
  .location-steps li::before {
    content: "✓";
  
    position: absolute;
    left: 0;
  
    color: var(--blue);
    font-weight: 950;
  }
  
  /* Home screen */
  
  .app-location-layout {
    grid-template-columns:
      minmax(0, 1fr)
      minmax(330px, 0.8fr);
  }
  
  .home-screen {
    width: min(380px, 100%);
    margin-inline: auto;
  
    padding: 22px;
  
    background:
      radial-gradient(
        circle at top right,
        rgba(90, 148, 238, 0.35),
        transparent 30%
      ),
      linear-gradient(
        160deg,
        #879fbe,
        #d4dce7
      );
  
    border: 8px solid #22272e;
    border-radius: 43px;
  
    box-shadow:
      0 30px 65px rgba(32, 51, 73, 0.23);
  }
  
  .home-status {
    display: flex;
    align-items: center;
    justify-content: space-between;
  
    color: var(--white);
  
    font-size: 11px;
    font-weight: 850;
  }
  
  .home-status > div {
    display: flex;
    gap: 3px;
  }
  
  .home-status i {
    display: block;
  
    width: 5px;
    height: 5px;
  
    background: var(--white);
    border-radius: 50%;
  }
  
  .app-grid {
    display: grid;
    grid-template-columns:
      repeat(3, 1fr);
  
    gap: 26px 20px;
  
    margin: 40px 0;
  }
  
  .app-item {
    text-align: center;
  }
  
  .generic-app,
  .aapoker-app {
    display: grid;
  
    width: 58px;
    height: 58px;
  
    place-items: center;
  
    margin-inline: auto;
  
    border-radius: 16px;
  
    box-shadow:
      0 10px 22px rgba(31, 54, 82, 0.16);
  }
  
  .generic-app {
    background: #dce4ed;
  }
  
  .blue-app {
    background: linear-gradient(
      145deg,
      #56a1f2,
      #2d76dc
    );
  }
  
  .green-app {
    background: linear-gradient(
      145deg,
      #5fdca1,
      #23b870
    );
  }
  
  .gray-app {
    background: linear-gradient(
      145deg,
      #cbd1d8,
      #8e99a5
    );
  }
  
  .purple-app {
    background: linear-gradient(
      145deg,
      #ab8cf2,
      #7559dd
    );
  }
  
  .orange-app {
    background: linear-gradient(
      145deg,
      #f1b35f,
      #e4843f
    );
  }
  
  .aapoker-app {
    color: var(--white);
  
    background: linear-gradient(
      145deg,
      var(--blue),
      var(--purple)
    );
  
    font-size: 17px;
    font-weight: 950;
  }
  
  .app-item small {
    display: block;
  
    margin-top: 6px;
  
    color: var(--white);
    font-size: 10px;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
  }
  
  .featured-app {
    position: relative;
  }
  
  .featured-app::after {
    content: "";
  
    position: absolute;
    top: -7px;
    left: 50%;
  
    width: 72px;
    height: 72px;
  
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 21px;
  
    transform: translateX(-50%);
  }
  
  .search-bar {
    display: flex;
    align-items: center;
    justify-content: center;
  
    gap: 8px;
  
    min-height: 40px;
  
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.2);
  
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 999px;
  
    font-size: 12px;
  
    backdrop-filter: blur(14px);
  }
  
  /* Troubleshooting table */
  
  .troubleshooting-section .section-heading > p:last-child {
    color: var(--muted);
  }
  
  .trouble-table {
    overflow: hidden;
  
    border: 1px solid var(--line-dark);
    border-radius: 21px;
  }
  
  .trouble-head,
  .trouble-table article {
    display: grid;
    grid-template-columns:
      minmax(170px, 0.7fr)
      minmax(220px, 1fr)
      minmax(0, 1.3fr);
  }
  
  .trouble-head {
    min-height: 58px;
  
    align-items: center;
  
    background: rgba(255, 255, 255, 0.06);
    border-bottom: 1px solid var(--line-dark);
  }
  
  .trouble-head span {
    padding: 0 22px;
  
    color: #8ba6c2;
    font-size: 11px;
    font-weight: 850;
  }
  
  .trouble-table article {
    align-items: center;
  
    border-bottom: 1px solid var(--line-dark);
  }
  
  .trouble-table article:last-child {
    border-bottom: 0;
  }
  
  .trouble-table article > div,
  .trouble-table article > ul {
    min-height: 126px;
  
    margin: 0;
    padding: 22px;
  
    border-right: 1px solid var(--line-dark);
  }
  
  .trouble-table article > ul {
    border-right: 0;
  }
  
  .trouble-stage {
    display: flex;
    align-items: center;
  
    gap: 13px;
  }
  
  .trouble-stage span {
    display: grid;
  
    width: 38px;
    height: 38px;
  
    place-items: center;
  
    color: var(--white);
    background: linear-gradient(
      145deg,
      var(--blue),
      var(--purple)
    );
  
    border-radius: 11px;
  
    font-size: 11px;
    font-weight: 950;
  }
  
  .trouble-stage strong {
    font-size: 13px;
  }
  
  .trouble-table article > div:nth-child(2) {
    color: var(--muted);
    font-size: 13px;
  }
  
  .trouble-table ul {
    list-style: none;
  }
  
  .trouble-table li {
    position: relative;
  
    padding: 5px 0 5px 18px;
  
    color: var(--muted);
    font-size: 13px;
  }
  
  .trouble-table li::before {
    content: "";
  
    position: absolute;
    top: 14px;
    left: 0;
  
    width: 6px;
    height: 6px;
  
    background: var(--blue);
    border-radius: 50%;
  }
  
  /* Update */
  
  .update-section {
    background: var(--blue-soft);
    border-top: 1px solid #cbdff6;
    border-bottom: 1px solid #cbdff6;
  }
  
  .update-layout {
    display: grid;
    grid-template-columns:
      auto
      minmax(0, 1fr)
      auto;
  
    align-items: center;
  
    gap: 30px;
  }
  
  .update-icon span {
    display: grid;
  
    width: 72px;
    height: 72px;
  
    place-items: center;
  
    color: var(--white);
    background: linear-gradient(
      145deg,
      var(--blue),
      var(--purple)
    );
  
    border-radius: 22px;
  
    font-size: 34px;
  }
  
  .update-copy h2 {
    margin-bottom: 8px;
  }
  
  .update-copy p:not(.eyebrow) {
    max-width: 760px;
  
    margin-bottom: 0;
  
    color: var(--ink-soft);
  }
  
  .update-actions {
    display: flex;
    align-items: center;
  
    gap: 16px;
  }
  
  /* FAQ */
  
  .faq-layout {
    display: grid;
    grid-template-columns:
      minmax(260px, 0.72fr)
      minmax(0, 1.28fr);
  
    gap: 58px;
  }
  
  .faq-list {
    border-top: 1px solid #cdd5de;
  }
  
  .faq-list details {
    border-bottom: 1px solid #cdd5de;
  }
  
  .faq-list summary {
    position: relative;
  
    padding: 22px 48px 22px 0;
  
    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(--blue);
  
    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(--ink-soft);
  }
  
  /* Related */
  
  .related-section {
    padding: 92px 0;
  }
  
  .related-nav {
    display: grid;
    grid-template-columns:
      repeat(2, 1fr);
  
    gap: 13px;
  }
  
  .related-nav a {
    display: grid;
    grid-template-columns: 50px 1fr;
  
    align-items: center;
  
    gap: 16px;
  
    min-height: 92px;
  
    padding: 16px 20px;
  
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 16px;
  
    transition:
      transform 160ms ease,
      border-color 160ms ease,
      box-shadow 160ms ease;
  }
  
  .related-nav a:hover {
    transform: translateY(-3px);
  
    border-color: #abccee;
  
    box-shadow:
      0 14px 32px rgba(29, 58, 92, 0.08);
  }
  
  .related-number {
    display: grid;
  
    width: 42px;
    height: 42px;
  
    place-items: center;
  
    color: var(--blue-dark);
    background: var(--blue-soft);
  
    border-radius: 12px;
  
    font-size: 11px;
    font-weight: 950;
  }
  
  .related-nav small,
  .related-nav strong {
    display: block;
  }
  
  .related-nav small {
    color: var(--blue);
    font-weight: 800;
  }
  
  /* Bottom CTA */
  
  .bottom-cta {
    background:
      radial-gradient(
        circle at 85% 20%,
        rgba(102, 145, 235, 0.18),
        transparent 30%
      ),
      linear-gradient(
        145deg,
        #f8faff,
        #e9eff8
      );
  
    border-top: 1px solid #d5dee9;
  }
  
  .bottom-cta-layout {
    display: flex;
    min-height: 245px;
  
    align-items: center;
    justify-content: space-between;
  
    gap: 46px;
  }
  
  .cta-label {
    margin-bottom: 10px;
  
    color: var(--blue);
  
    font-size: 11px;
    font-weight: 950;
    letter-spacing: 0.14em;
  }
  
  .bottom-cta h2 {
    max-width: 790px;
    margin-bottom: 8px;
  }
  
  .bottom-cta p:not(.cta-label) {
    margin-bottom: 0;
    color: var(--ink-soft);
  }
  
  .bottom-actions {
    display: flex;
    align-items: center;
  
    gap: 17px;
  
    flex-shrink: 0;
  }
  
  /* Footer */
  
  .site-footer {
    padding: 34px 0;
  
    color: #aab5c0;
    background: #11171e;
  
    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 top */
  
  .back-to-top {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 50;
  
    width: 44px;
    height: 44px;
  
    color: var(--white);
    background: var(--blue);
  
    border: 0;
    border-radius: 50%;
  
    box-shadow:
      0 14px 34px rgba(25, 75, 140, 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,
    .system-layout,
    .confirm-layout,
    .app-location-layout,
    .faq-layout {
      grid-template-columns: 1fr;
    }
  
    .hero-copy {
      max-width: 790px;
    }
  
    .ios-stage {
      max-width: 650px;
    }
  
    .device-choice-grid {
      grid-template-columns: 1fr;
    }
  
    .choice-panel {
      max-width: 820px;
    }
  
    .confirm-window {
      max-width: 650px;
    }
  
    .home-screen {
      margin-inline: 0;
    }
  
    .update-layout {
      grid-template-columns:
        auto
        1fr;
    }
  
    .update-actions {
      grid-column: 2;
      flex-wrap: wrap;
    }
  
    .bottom-cta-layout {
      min-height: 0;
  
      align-items: flex-start;
      flex-direction: column;
  
      padding-block: 50px;
    }
  
    .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: 55px 0 48px;
    }
  
    h1 {
      font-size: clamp(
        38px,
        12vw,
        55px
      );
    }
  
    .hero-facts {
      grid-template-columns: 1fr;
    }
  
    .hero-facts div {
      padding: 10px 0;
      border-bottom: 1px solid #d2dbe4;
    }
  
    .ios-stage {
      min-height: 490px;
    }
  
    .iphone-device {
      left: 4%;
      width: 190px;
      height: 400px;
    }
  
    .ipad-device {
      right: 0;
      width: 300px;
      height: 240px;
    }
  
    .floating-status {
      display: none;
    }
  
    .status-strip-grid {
      grid-template-columns: 1fr;
    }
  
    .status-strip-grid > div {
      border-right: 0;
      border-bottom: 1px solid var(--line);
    }
  
    .section {
      padding: 72px 0;
    }
  
    .choice-panel {
      grid-template-columns: 1fr;
    }
  
    .choice-visual {
      min-height: 260px;
    }
  
    .install-timeline article {
      grid-template-columns:
        58px
        1fr;
    }
  
    .timeline-status {
      grid-column: 2;
      justify-self: start;
    }
  
    .trouble-head {
      display: none;
    }
  
    .trouble-table article {
      grid-template-columns: 1fr;
    }
  
    .trouble-table article > div,
    .trouble-table article > ul {
      min-height: 0;
  
      border-right: 0;
      border-bottom: 1px solid var(--line-dark);
    }
  
    .trouble-table article > ul {
      border-bottom: 0;
    }
  
    .related-nav {
      grid-template-columns: 1fr;
    }
  }
  
  @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%;
    }
  
    .ios-stage {
      min-height: 410px;
    }
  
    .iphone-device {
      left: 0;
  
      width: 155px;
      height: 330px;
  
      border-radius: 34px;
    }
  
    .iphone-screen {
      border-radius: 27px;
    }
  
    .app-symbol {
      width: 62px;
      height: 62px;
    }
  
    .ipad-device {
      right: -50px;
      bottom: 5px;
  
      width: 255px;
      height: 205px;
    }
  
    .ipad-screen {
      grid-template-columns: 58px 1fr;
    }
  
    .ipad-content {
      padding: 28px 18px;
    }
  
    .ipad-chart {
      height: 70px;
    }
  
    .choice-content {
      padding: 28px 19px;
    }
  
    .settings-head,
    .setting-row {
      align-items: flex-start;
    }
  
    .setting-row {
      flex-direction: column;
    }
  
    .timeline-status {
      margin-top: 0;
    }
  
    .confirm-window-body {
      padding: 25px 18px;
    }
  
    .confirm-actions {
      align-items: stretch;
      flex-direction: column;
    }
  
    .home-screen {
      padding: 18px;
    }
  
    .app-grid {
      gap: 23px 12px;
    }
  
    .generic-app,
    .aapoker-app {
      width: 50px;
      height: 50px;
    }
  
    .update-layout {
      grid-template-columns: 1fr;
    }
  
    .update-actions {
      grid-column: 1;
  
      align-items: stretch;
      flex-direction: column;
    }
  
    .bottom-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;
    }
  }