@charset "UTF-8";

:root {
    --ink: #0b2032;
    --muted: #5f7484;
    --line: #cbdce7;
    --paper: #f8fbfd;
    --soft: #eaf6fb;
    --blue: #139ee5;
    --blue-dark: #0a628f;
    --violet: #6457d9;
    --mint: #4fddb0;
    --yellow: #ffd84d;
    --white: #ffffff;
    --header-height: 76px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + 18px);
}

body {
    min-width: 320px;
    margin: 0;
    color: var(--ink);
    background: var(--paper);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

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

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

button,
input {
    font: inherit;
}

button {
    color: inherit;
}

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

[hidden] {
    display: none !important;
}

.page-shell {
    width: min(1200px, calc(100% - 40px));
    margin-right: auto;
    margin-left: auto;
}

.icon {
    display: inline-block;
    width: 20px;
    height: 20px;
    flex: 0 0 auto;
    background-color: currentColor;
    background-position: center;
    background-repeat: no-repeat;
    background-size: contain;
    -webkit-mask-position: center;
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-size: contain;
    mask-position: center;
    mask-repeat: no-repeat;
    mask-size: contain;
}

.icon-download {
    -webkit-mask-image: url("../icons/download.svg");
    mask-image: url("../icons/download.svg");
}

.icon-menu {
    -webkit-mask-image: url("../icons/menu.svg");
    mask-image: url("../icons/menu.svg");
}

.icon-radar {
    -webkit-mask-image: url("../icons/radar.svg");
    mask-image: url("../icons/radar.svg");
}

.icon-signal,
.icon-wifi {
    -webkit-mask-image: url("../icons/signal.svg");
    mask-image: url("../icons/signal.svg");
}

.icon-tool {
    -webkit-mask-image: url("../icons/tool.svg");
    mask-image: url("../icons/tool.svg");
}

.icon-arrow-left {
    -webkit-mask-image: url("../icons/arrow-left.svg");
    mask-image: url("../icons/arrow-left.svg");
}

.icon-arrow-right {
    -webkit-mask-image: url("../icons/arrow-right.svg");
    mask-image: url("../icons/arrow-right.svg");
}

.icon-globe {
    -webkit-mask-image: url("../icons/globe.svg");
    mask-image: url("../icons/globe.svg");
}

.icon-avatar {
    -webkit-mask-image: url("../icons/avatar.svg");
    mask-image: url("../icons/avatar.svg");
}

.icon-top {
    -webkit-mask-image: url("../icons/top.svg");
    mask-image: url("../icons/top.svg");
}

.site-header {
    position: sticky;
    z-index: 1000;
    top: 0;
    height: var(--header-height);
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.98);
}

.header-inner {
    position: relative;
    display: flex;
    width: min(1200px, calc(100% - 40px));
    height: 100%;
    margin-right: auto;
    margin-left: auto;
    align-items: center;
}

.brand {
    display: inline-flex;
    min-width: 210px;
    align-items: center;
    gap: 12px;
}

.brand img,
.footer-brand img {
    width: 48px;
    height: 48px;
    border: 1px solid var(--line);
    border-radius: 5px;
    object-fit: contain;
}

.brand-copy {
    display: flex;
    min-width: 0;
    flex-direction: column;
    line-height: 1.25;
}

.brand-copy strong {
    font-size: 20px;
}

.brand-copy span {
    margin-top: 4px;
    color: var(--muted);
    font-size: 12px;
    white-space: nowrap;
}

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

.site-nav ul {
    display: flex;
    margin: 0;
    padding: 0;
    align-items: center;
    gap: 4px;
    list-style: none;
}

.site-nav a {
    position: relative;
    display: flex;
    min-height: 44px;
    padding: 0 14px;
    align-items: center;
    font-size: 14px;
    font-weight: 700;
    white-space: nowrap;
}

.site-nav a::after {
    position: absolute;
    right: 14px;
    bottom: 0;
    left: 14px;
    height: 3px;
    background: var(--blue);
    content: "";
    transform: scaleX(0);
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
    transform: scaleX(1);
}

.site-nav a.is-active {
    color: var(--blue-dark);
}

.header-actions {
    display: flex;
    margin-left: 20px;
    align-items: center;
    gap: 8px;
}

.header-download {
    display: inline-flex;
    height: 44px;
    padding: 0 18px;
    color: var(--white);
    border: 1px solid var(--blue-dark);
    border-radius: 5px;
    background: var(--blue-dark);
    align-items: center;
    justify-content: center;
    gap: 9px;
    font-size: 14px;
    font-weight: 700;
    white-space: nowrap;
}

.header-download:hover {
    color: var(--ink);
    background: var(--yellow);
}

.mobile-download-text {
    display: none;
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 11px;
    border: 1px solid var(--ink);
    border-radius: 5px;
    background: var(--white);
    cursor: pointer;
}

.menu-toggle .icon {
    width: 100%;
    height: 100%;
}

.hero {
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--line);
    background-color: var(--paper);
    background-image: linear-gradient(rgba(19, 158, 229, 0.08) 1px, transparent 1px), linear-gradient(90deg, rgba(19, 158, 229, 0.08) 1px, transparent 1px);
    background-size: 44px 44px;
}

.hero::before {
    position: absolute;
    top: -150px;
    right: -150px;
    width: 470px;
    height: 470px;
    border: 80px solid rgba(100, 87, 217, 0.09);
    border-radius: 50%;
    content: "";
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    min-height: 690px;
    padding-top: 54px;
    padding-bottom: 54px;
    align-items: center;
    grid-template-columns: minmax(0, 0.9fr) minmax(560px, 1.1fr);
    gap: 60px;
}

.hero-copy {
    min-width: 0;
}

.eyebrow,
.section-index,
.console-kicker {
    margin: 0 0 14px;
    color: var(--blue-dark);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.19em;
    line-height: 1.4;
    text-transform: uppercase;
}

.hero-copy h1 {
    margin: 0;
    font-size: clamp(74px, 7.2vw, 116px);
    line-height: 0.96;
    letter-spacing: -0.07em;
    white-space: nowrap;
}

.hero-copy h2 {
    margin: 28px 0 18px;
    font-size: clamp(28px, 2.5vw, 38px);
    line-height: 1.3;
}

.hero-description {
    max-width: 570px;
    margin: 0;
    color: var(--muted);
    font-size: 16px;
    line-height: 2;
}

.hero-points {
    display: flex;
    margin: 26px 0 0;
    padding: 0;
    flex-wrap: wrap;
    gap: 10px;
    list-style: none;
}

.hero-points li {
    display: inline-flex;
    min-height: 44px;
    padding: 0 15px;
    border: 1px solid var(--line);
    border-radius: 5px;
    background: var(--white);
    align-items: center;
    gap: 9px;
    font-size: 14px;
    font-weight: 700;
}

.hero-points .icon {
    color: var(--blue);
}

.hero-download-group {
    display: flex;
    margin-top: 28px;
    align-items: flex-start;
    flex-direction: column;
    gap: 9px;
}

.primary-download {
    display: inline-flex;
    min-width: 230px;
    min-height: 58px;
    padding: 0 25px;
    color: var(--white);
    border: 1px solid var(--blue-dark);
    border-radius: 5px;
    background: var(--blue-dark);
    align-items: center;
    justify-content: center;
    gap: 11px;
    font-size: 16px;
    font-weight: 800;
}

.primary-download:hover {
    color: var(--ink);
    border-color: var(--yellow);
    background: var(--yellow);
}

.primary-download:hover .icon,
.header-download:hover .icon {
    color: inherit;
}

.age-label {
    color: var(--muted);
    font-size: 12px;
}

.hero-carousel {
    width: 100%;
    min-width: 0;
    padding: 24px;
    color: var(--white);
    border: 1px solid #1b4564;
    border-radius: 5px;
    background: #0c2940;
    box-shadow: 14px 14px 0 rgba(19, 158, 229, 0.13);
}

.carousel-head,
.carousel-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.carousel-head > div:first-child {
    display: flex;
    flex-direction: column;
}

.carousel-head span {
    color: #7bd5ff;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.16em;
}

.carousel-head strong {
    margin-top: 3px;
    font-size: 24px;
}

.carousel-controls {
    display: flex;
    gap: 8px;
}

.carousel-button {
    display: grid;
    width: 44px;
    height: 44px;
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 5px;
    background: transparent;
    cursor: pointer;
    place-items: center;
}

.carousel-button:hover {
    color: var(--ink);
    border-color: var(--yellow);
    background: var(--yellow);
}

.hero-track {
    display: flex;
    margin-top: 20px;
    padding: 0 0 10px;
    gap: 12px;
    overflow-x: auto;
    scroll-behavior: smooth;
    scroll-snap-type: x mandatory;
    scrollbar-color: var(--yellow) rgba(255, 255, 255, 0.15);
    scrollbar-width: thin;
}

.hero-track::-webkit-scrollbar,
.screens-track::-webkit-scrollbar {
    height: 7px;
}

.hero-track::-webkit-scrollbar-thumb {
    border-radius: 5px;
    background: var(--yellow);
}

.hero-track::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.14);
}

.hero-slide {
    min-width: calc((100% - 12px) / 2);
    margin: 0;
    color: var(--ink);
    border-radius: 5px;
    background: var(--white);
    overflow: hidden;
    scroll-snap-align: start;
}

.hero-slide-image {
    display: flex;
    height: 365px;
    padding: 10px;
    align-items: center;
    justify-content: center;
    background: #eaf3f8;
}

.hero-slide-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.hero-slide figcaption {
    display: grid;
    min-height: 76px;
    padding: 13px 14px;
    grid-template-columns: 30px 1fr;
}

.hero-slide figcaption span {
    color: var(--blue-dark);
    font-weight: 800;
    grid-row: 1 / 3;
}

.hero-slide figcaption strong {
    font-size: 15px;
}

.hero-slide figcaption small {
    color: var(--muted);
    font-size: 12px;
}

.carousel-foot {
    margin-top: 12px;
}

.carousel-foot > span {
    color: #adc3d2;
    font-size: 12px;
    letter-spacing: 0;
}

.carousel-dots {
    display: flex;
    gap: 8px;
}

.carousel-dots button {
    width: 26px;
    height: 5px;
    padding: 0;
    border: 0;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.28);
    cursor: pointer;
}

.carousel-dots button.is-active {
    background: var(--yellow);
}

.network-section,
.screens-section,
.voices-section {
    padding: 100px 0;
}

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

.section-heading {
    margin-bottom: 42px;
}

.heading-split {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 40px;
}

.section-heading h2,
.workflow-copy h2,
.faq-intro h2 {
    margin: 0;
    font-size: clamp(42px, 5vw, 68px);
    line-height: 1.1;
    letter-spacing: -0.04em;
}

.heading-split > p,
.faq-intro > p:last-child,
.workflow-copy > p {
    max-width: 480px;
    margin: 0;
    color: var(--muted);
}

.signal-console {
    display: grid;
    min-height: 500px;
    border: 1px solid var(--ink);
    border-radius: 5px;
    background: var(--paper);
    grid-template-columns: 330px 1fr;
    overflow: hidden;
}

.console-rail {
    padding: 22px;
    background: #0c2940;
}

.console-tab {
    display: grid;
    width: 100%;
    min-height: 126px;
    padding: 22px;
    color: var(--white);
    border: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
    background: transparent;
    cursor: pointer;
    text-align: left;
    grid-template-columns: 40px 1fr;
}

.console-tab span {
    color: #7bd5ff;
    font-size: 13px;
    font-weight: 800;
    grid-row: 1 / 3;
}

.console-tab strong {
    font-size: 22px;
}

.console-tab small {
    color: #a9c0cf;
    font-size: 12px;
}

.console-tab.is-active {
    color: var(--ink);
    border-color: var(--yellow);
    background: var(--yellow);
}

.console-tab.is-active span,
.console-tab.is-active small {
    color: var(--ink);
}

.console-stage {
    padding: 38px;
}

.console-toolbar {
    display: flex;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--line);
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
}

.console-toolbar h3 {
    margin: 0;
    font-size: 32px;
}

.sync-state {
    display: inline-flex;
    min-height: 36px;
    padding: 0 13px;
    color: #12684f;
    border: 1px solid #95dec7;
    border-radius: 5px;
    background: #e7fff6;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 700;
}

.sync-state i {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--mint);
}

.console-panel {
    display: grid;
    padding-top: 28px;
    gap: 14px;
}

.network-card {
    display: grid;
    min-height: 92px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 5px;
    background: var(--white);
    align-items: center;
    grid-template-columns: 46px 1fr auto;
    gap: 16px;
}

.network-card > .icon {
    width: 38px;
    height: 38px;
    color: var(--blue);
}

.network-card > div {
    display: flex;
    flex-direction: column;
}

.network-card strong {
    font-size: 18px;
}

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

.network-card b {
    color: var(--blue-dark);
    font-size: 22px;
}

.network-card.is-current {
    border-color: var(--blue);
    box-shadow: inset 5px 0 0 var(--blue);
}

.meter-row {
    display: grid;
    min-height: 88px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 5px;
    background: var(--white);
    align-items: center;
    grid-template-columns: 130px 1fr 50px;
    gap: 18px;
}

.meter-row > div {
    height: 8px;
    border-radius: 5px;
    background: #e2edf3;
    overflow: hidden;
}

.meter-row > div i {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--blue), var(--violet));
}

.check-row {
    display: grid;
    min-height: 82px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 5px;
    background: var(--white);
    align-items: center;
    cursor: pointer;
    grid-template-columns: 28px 1fr auto;
    gap: 12px;
    text-align: left;
}

.check-row > i {
    width: 20px;
    height: 20px;
    border: 2px solid var(--blue);
    border-radius: 50%;
}

.check-row.is-done > i {
    box-shadow: inset 0 0 0 4px var(--white);
    background: var(--blue);
}

.check-row b {
    color: var(--blue-dark);
    font-size: 12px;
}

.workflow-section {
    padding: 90px 0;
    color: var(--white);
    background: #0c2940;
}

.workflow-grid {
    display: grid;
    grid-template-columns: 0.75fr 1.25fr;
    gap: 70px;
}

.workflow-copy .section-index {
    color: #7bd5ff;
}

.workflow-copy > p {
    margin-top: 22px;
    color: #b9cbd6;
}

.workflow-result {
    display: flex;
    margin-top: 34px;
    padding-top: 22px;
    border-top: 1px solid rgba(255, 255, 255, 0.25);
    flex-direction: column;
}

.workflow-result span {
    color: #7bd5ff;
    font-size: 12px;
}

.workflow-result strong {
    margin-top: 5px;
    font-size: 18px;
}

.workflow-steps {
    display: grid;
    margin: 0;
    padding: 0;
    list-style: none;
    grid-template-columns: repeat(3, 1fr);
}

.workflow-steps li {
    min-width: 0;
}

.workflow-steps button {
    display: flex;
    width: 100%;
    min-height: 240px;
    padding: 28px;
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-right: 0;
    background: transparent;
    cursor: pointer;
    flex-direction: column;
    text-align: left;
}

.workflow-steps li:last-child button {
    border-right: 1px solid rgba(255, 255, 255, 0.28);
}

.workflow-steps span {
    color: #7bd5ff;
    font-size: 13px;
    font-weight: 800;
}

.workflow-steps strong {
    margin-top: auto;
    font-size: 24px;
}

.workflow-steps small {
    margin-top: 5px;
    color: #b9cbd6;
    font-size: 12px;
}

.workflow-steps li.is-active button {
    color: var(--ink);
    border-color: var(--yellow);
    background: var(--yellow);
}

.workflow-steps li.is-active span,
.workflow-steps li.is-active small {
    color: var(--ink);
}

.screens-section {
    background: #eef7fb;
}

.screens-track {
    display: grid;
    grid-template-columns: repeat(4, 250px);
    justify-content: space-between;
    gap: 24px;
}

.screen-card {
    width: 250px;
    margin: 0;
    border: 1px solid var(--line);
    border-radius: 5px;
    background: var(--white);
    overflow: hidden;
}

.screen-image {
    display: flex;
    width: 250px;
    height: 450px;
    padding: 8px;
    align-items: center;
    justify-content: center;
    background: #e5f1f6;
}

.screen-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.screen-card figcaption {
    display: grid;
    min-height: 96px;
    padding: 18px;
    grid-template-columns: 36px 1fr;
}

.screen-card figcaption > span {
    color: var(--blue-dark);
    font-size: 14px;
    font-weight: 800;
}

.screen-card figcaption > div {
    display: flex;
    flex-direction: column;
}

.screen-card figcaption strong {
    font-size: 17px;
}

.screen-card figcaption small {
    color: var(--muted);
    font-size: 12px;
}

.faq-section {
    padding: 100px 0;
    background: var(--white);
}

.faq-grid {
    display: grid;
    grid-template-columns: 330px 1fr;
    gap: 70px;
}

.faq-intro > p:last-child {
    margin-top: 22px;
}

.faq-list {
    border-top: 1px solid var(--ink);
}

.faq-item,
.official-site-item {
    border-bottom: 1px solid var(--line);
}

.faq-item > button,
.official-site-item > button {
    display: grid;
    width: 100%;
    min-height: 78px;
    padding: 0 20px;
    border: 0;
    background: transparent;
    align-items: center;
    cursor: pointer;
    text-align: left;
    grid-template-columns: 44px 1fr 24px;
    gap: 12px;
}

.faq-item > button > span {
    color: var(--blue-dark);
    font-size: 12px;
    font-weight: 800;
}

.faq-item > button > strong,
.official-site-item > button > strong {
    font-size: 17px;
}

.faq-item > button > i,
.official-site-item > button > span {
    position: relative;
    width: 20px;
    height: 20px;
}

.faq-item > button > i::before,
.faq-item > button > i::after,
.official-site-item > button > span::before,
.official-site-item > button > span::after {
    position: absolute;
    top: 9px;
    left: 3px;
    width: 14px;
    height: 2px;
    background: var(--ink);
    content: "";
}

.faq-item > button > i::after,
.official-site-item > button > span::after {
    transform: rotate(90deg);
}

.faq-item > button[aria-expanded="true"] > i::after,
.official-site-item > button[aria-expanded="true"] > span::after {
    transform: rotate(0);
}

.faq-answer {
    padding: 0 64px 24px 76px;
}

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

.official-site-item {
    margin-top: 18px;
    border: 1px solid var(--ink);
    border-radius: 5px;
}

.official-site-item .icon-globe {
    color: var(--blue-dark);
}

.official-site-answer {
    padding: 0 62px 22px;
}

.official-site-answer a {
    color: var(--blue-dark);
    text-decoration: underline;
    word-break: break-all;
}

.voices-section {
    background: #0c2940;
}

.voices-section .section-index {
    color: #7bd5ff;
}

.voices-section .section-heading h2,
.voices-section .heading-split > p {
    color: var(--white);
}

.voices-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.voice-card {
    display: flex;
    min-height: 310px;
    padding: 26px;
    border: 1px solid #37566d;
    border-radius: 5px;
    background: #102f47;
    flex-direction: column;
}

.voice-head {
    display: grid;
    align-items: center;
    grid-template-columns: 42px 1fr auto;
    gap: 12px;
}

.voice-head > .icon-avatar {
    width: 42px;
    height: 42px;
    color: #7bd5ff;
}

.voice-head strong {
    color: var(--white);
    font-size: 15px;
}

.voice-rating {
    display: flex;
    gap: 3px;
}

.voice-rating i {
    display: block;
    width: 13px;
    height: 13px;
    background: var(--yellow);
    -webkit-mask: url("../icons/star.svg") center / contain no-repeat;
    mask: url("../icons/star.svg") center / contain no-repeat;
}

.voice-rating i.is-empty {
    background: #526d80;
}

.voice-card p {
    margin: 25px 0 0;
    color: #d9e6ee;
    font-size: 14px;
    line-height: 2;
}

.voice-card time {
    margin-top: auto;
    padding-top: 18px;
    color: #91adbf;
    border-top: 1px solid #37566d;
    font-size: 12px;
    text-align: right;
}

.download-section {
    padding: 86px 0;
    background: #eaf6fb;
}

.download-ticket {
    display: grid;
    min-height: 190px;
    border: 1px solid var(--ink);
    border-radius: 5px;
    background: var(--white);
    grid-template-columns: 210px 1fr 270px;
    overflow: hidden;
}

.download-mark {
    display: flex;
    color: var(--ink);
    border-right: 1px dashed var(--ink);
    background: var(--yellow);
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.download-mark span {
    font-size: 68px;
    font-weight: 900;
    line-height: 1;
}

.download-mark small,
.download-copy > p {
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.15em;
}

.download-copy {
    display: flex;
    padding: 30px 38px;
    justify-content: center;
    flex-direction: column;
}

.download-copy > p {
    margin: 0 0 5px;
    color: var(--blue-dark);
}

.download-copy h2 {
    margin: 0;
    font-size: 28px;
    line-height: 1.35;
}

.download-copy > span {
    margin-top: 8px;
    color: var(--muted);
    font-size: 13px;
}

.download-action {
    display: flex;
    padding: 0 28px;
    color: var(--white);
    background: linear-gradient(135deg, var(--blue-dark), var(--violet));
    align-items: center;
    justify-content: center;
    gap: 11px;
    font-size: 17px;
    font-weight: 800;
}

.download-action:hover {
    color: var(--ink);
    background: var(--yellow);
}

.download-action .icon-arrow-right {
    margin-left: auto;
}

.site-footer {
    padding: 48px 0 26px;
    color: #dceaf2;
    background: #071c2c;
}

.footer-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-brand span {
    display: flex;
    flex-direction: column;
}

.footer-brand strong {
    color: var(--white);
    font-size: 18px;
}

.footer-brand small {
    color: #91adbf;
    font-size: 12px;
    white-space: nowrap;
}

.footer-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 22px;
}

.footer-nav a {
    font-size: 13px;
}

.footer-nav a:hover {
    color: #7bd5ff;
}

.footer-bottom {
    margin-top: 30px;
    padding-top: 24px;
    border-top: 1px solid #304b5e;
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    color: #91adbf;
    font-size: 12px;
}

.back-top {
    position: fixed;
    z-index: 900;
    right: 24px;
    bottom: 24px;
    display: grid;
    width: 50px;
    height: 50px;
    color: var(--ink);
    border: 1px solid var(--ink);
    border-radius: 50%;
    background: var(--yellow);
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    place-items: center;
}

.back-top.is-visible {
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
}

.back-top .icon {
    width: 22px;
    height: 22px;
}

@media (max-width: 1120px) {
    .site-nav a {
        padding-right: 10px;
        padding-left: 10px;
    }

    .site-nav a::after {
        right: 10px;
        left: 10px;
    }

    .header-actions {
        margin-left: 10px;
    }

    .hero-grid {
        grid-template-columns: minmax(0, 0.85fr) minmax(500px, 1.15fr);
        gap: 34px;
    }

    .screens-track {
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        justify-content: start;
        scrollbar-color: var(--blue) #d9e8f0;
        scrollbar-width: thin;
    }

    .screen-card {
        flex: 0 0 250px;
        scroll-snap-align: start;
    }
}

@media (max-width: 920px) {
    :root {
        --header-height: 66px;
    }

    body {
        padding-top: var(--header-height);
    }

    .site-header {
        position: fixed;
        top: 0;
        right: 0;
        left: 0;
        width: 100%;
        height: var(--header-height);
        background: var(--white);
        -webkit-backface-visibility: hidden;
        backface-visibility: hidden;
    }

    .page-shell,
    .header-inner {
        width: min(100% - 28px, 720px);
    }

    .header-inner {
        justify-content: space-between;
    }

    .brand {
        min-width: 0;
        flex: 1 1 auto;
    }

    .brand img {
        width: 42px;
        height: 42px;
    }

    .brand-copy strong {
        font-size: 16px;
    }

    .brand-copy span {
        font-size: 12px;
    }

    .site-nav {
        position: absolute;
        top: calc(100% + 1px);
        right: 0;
        left: 0;
        display: none;
        margin: 0;
        border: 1px solid var(--line);
        border-top: 0;
        border-radius: 0 0 5px 5px;
        background: var(--white);
        box-shadow: 0 18px 34px rgba(7, 28, 44, 0.12);
    }

    .site-nav.is-open {
        display: block;
    }

    .site-nav ul {
        display: grid;
        padding: 8px;
        gap: 0;
    }

    .site-nav li + li {
        border-top: 1px solid var(--line);
    }

    .site-nav a {
        min-height: 50px;
        padding: 0 14px;
    }

    .site-nav a::after {
        display: none;
    }

    .header-actions {
        margin-left: 10px;
    }

    .header-download {
        height: 42px;
        padding: 0 14px;
    }

    .header-download .icon {
        display: none;
    }

    .pc-download-text {
        display: none;
    }

    .mobile-download-text {
        display: inline;
    }

    .menu-toggle {
        display: block;
        width: 42px;
        height: 42px;
    }

    .hero-grid {
        min-height: auto;
        padding-top: 54px;
        padding-bottom: 60px;
        grid-template-columns: 1fr;
        gap: 46px;
    }

    .hero-copy {
        text-align: center;
    }

    .hero-copy h1 {
        font-size: clamp(58px, 15vw, 92px);
        white-space: normal;
    }

    .hero-description {
        margin-right: auto;
        margin-left: auto;
    }

    .hero-points,
    .hero-download-group {
        align-items: center;
        justify-content: center;
    }

    .hero-carousel {
        width: min(100%, 680px);
        margin-right: auto;
        margin-left: auto;
    }

    .signal-console {
        grid-template-columns: 1fr;
    }

    .console-rail {
        display: grid;
        padding: 10px;
        grid-template-columns: repeat(3, 1fr);
    }

    .console-tab {
        min-height: 105px;
        padding: 16px;
        border-right: 1px solid rgba(255, 255, 255, 0.18);
        border-bottom: 0;
        grid-template-columns: 32px 1fr;
    }

    .console-tab:last-child {
        border-right: 0;
    }

    .console-tab strong {
        font-size: 17px;
    }

    .workflow-grid,
    .faq-grid {
        grid-template-columns: 1fr;
        gap: 42px;
    }

    .workflow-steps button {
        min-height: 200px;
    }

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

    .download-ticket {
        grid-template-columns: 160px 1fr;
    }

    .download-action {
        min-height: 72px;
        grid-column: 1 / 3;
    }
}

@media (max-width: 640px) {
    :root {
        --header-height: 64px;
    }

    html {
        scroll-padding-top: 76px;
    }

    body {
        font-size: 14px;
    }

    .page-shell,
    .header-inner {
        width: calc(100% - 24px);
    }

    .brand {
        gap: 8px;
    }

    .brand img {
        width: 38px;
        height: 38px;
    }

    .brand-copy strong {
        font-size: 14px;
    }

    .brand-copy span {
        margin-top: 1px;
        font-size: 12px;
    }

    .header-actions {
        gap: 6px;
    }

    .header-download {
        height: 40px;
        padding: 0 12px;
        font-size: 12px;
    }

    .menu-toggle {
        width: 40px;
        height: 40px;
    }

    .hero::before {
        display: none;
    }

    .hero-grid {
        padding-top: 44px;
        padding-bottom: 46px;
        gap: 38px;
    }

    .eyebrow,
    .section-index {
        font-size: 12px;
    }

    .hero-copy h1 {
        font-size: clamp(52px, 18vw, 74px);
        letter-spacing: -0.05em;
    }

    .hero-copy h2 {
        margin-top: 22px;
        font-size: 26px;
    }

    .hero-description {
        font-size: 14px;
        line-height: 1.9;
    }

    .hero-points {
        display: grid;
        width: 100%;
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
    }

    .hero-points li {
        min-height: 58px;
        padding: 8px 5px;
        justify-content: center;
        flex-direction: column;
        gap: 3px;
        font-size: 12px;
    }

    .primary-download {
        width: 100%;
    }

    .hero-download-group {
        width: 100%;
    }

    .hero-carousel {
        padding: 16px;
        box-shadow: 8px 8px 0 rgba(19, 158, 229, 0.13);
    }

    .carousel-head strong {
        font-size: 20px;
    }

    .carousel-button {
        width: 38px;
        height: 38px;
    }

    .hero-slide {
        min-width: calc(100% - 32px);
    }

    .hero-slide-image {
        height: 420px;
    }

    .carousel-foot > span {
        display: none;
    }

    .network-section,
    .screens-section,
    .voices-section,
    .faq-section {
        padding: 72px 0;
    }

    .heading-split {
        align-items: flex-start;
        flex-direction: column;
        gap: 18px;
    }

    .section-heading h2,
    .workflow-copy h2,
    .faq-intro h2 {
        font-size: 42px;
    }

    .section-heading {
        margin-bottom: 30px;
    }

    .console-rail {
        grid-template-columns: 1fr;
    }

    .console-tab {
        min-height: 78px;
        border-right: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.18);
        grid-template-columns: 34px 1fr;
    }

    .console-tab:last-child {
        border-bottom: 0;
    }

    .console-stage {
        padding: 22px 16px;
    }

    .console-toolbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .console-toolbar h3 {
        font-size: 26px;
    }

    .network-card {
        grid-template-columns: 36px 1fr auto;
        gap: 10px;
    }

    .network-card > .icon {
        width: 30px;
        height: 30px;
    }

    .network-card strong {
        font-size: 15px;
    }

    .network-card b {
        font-size: 16px;
    }

    .meter-row {
        grid-template-columns: 1fr 48px;
    }

    .meter-row > div {
        grid-column: 1 / 3;
        grid-row: 2;
    }

    .workflow-section {
        padding: 72px 0;
    }

    .workflow-grid {
        gap: 34px;
    }

    .workflow-copy {
        text-align: center;
    }

    .workflow-copy > p {
        margin-right: auto;
        margin-left: auto;
    }

    .workflow-steps {
        grid-template-columns: 1fr;
    }

    .workflow-steps button {
        min-height: 128px;
        padding: 20px;
        border-right: 1px solid rgba(255, 255, 255, 0.28);
        border-bottom: 0;
    }

    .workflow-steps li:last-child button {
        border-bottom: 1px solid rgba(255, 255, 255, 0.28);
    }

    .workflow-steps strong {
        margin-top: 24px;
        font-size: 20px;
    }

    .screens-track {
        display: flex;
        margin-right: -12px;
        padding-right: 28px;
        gap: 12px;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
    }

    .screen-card {
        flex: 0 0 min(250px, calc(100vw - 64px));
    }

    .screen-image {
        width: 100%;
        height: 450px;
    }

    .faq-grid {
        gap: 30px;
    }

    .faq-intro {
        text-align: center;
    }

    .faq-intro > p:last-child {
        margin-right: auto;
        margin-left: auto;
    }

    .faq-item > button,
    .official-site-item > button {
        min-height: 72px;
        padding: 0 10px;
        grid-template-columns: 32px 1fr 22px;
        gap: 8px;
    }

    .faq-item > button > strong,
    .official-site-item > button > strong {
        font-size: 14px;
    }

    .faq-answer {
        padding: 0 18px 22px 50px;
    }

    .official-site-answer {
        padding: 0 50px 20px;
    }

    .voices-section .section-heading {
        text-align: center;
    }

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

    .voice-card {
        min-height: 0;
    }

    .voice-head {
        grid-template-columns: 38px 1fr;
    }

    .voice-head > .icon-avatar {
        width: 38px;
        height: 38px;
    }

    .voice-rating {
        margin-left: 50px;
        grid-column: 1 / 3;
    }

    .voice-card time {
        margin-top: 18px;
    }

    .download-section {
        padding: 60px 0;
    }

    .download-ticket {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .download-mark {
        min-height: 112px;
        border-right: 0;
        border-bottom: 1px dashed var(--ink);
    }

    .download-mark span {
        font-size: 52px;
    }

    .download-copy {
        padding: 26px 18px;
    }

    .download-copy h2 {
        font-size: 23px;
    }

    .download-action {
        min-height: 64px;
        grid-column: auto;
    }

    .footer-main {
        align-items: center;
        flex-direction: column;
        text-align: center;
    }

    .footer-brand {
        justify-content: center;
    }

    .footer-nav {
        justify-content: center;
    }

    .back-top {
        right: 14px;
        bottom: 14px;
        width: 46px;
        height: 46px;
    }

    a,
    button,
    summary {
        transition: none !important;
        animation: none !important;
    }
}

@media (max-width: 390px) {
    .header-inner {
        width: calc(100% - 16px);
    }

    .brand-copy strong {
        font-size: 13px;
    }

    .brand-copy span {
        font-size: 12px;
    }

    .header-download {
        padding: 0 10px;
    }

    .hero-slide-image {
        height: 390px;
    }

    .carousel-controls {
        gap: 4px;
    }

    .carousel-button {
        width: 34px;
        height: 34px;
    }
}