.featureImages {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    margin-top: 12px;
}
.featureCard__media > .featureImages:first-child {
    margin-top: 0;
}
.featureImages__viewport {
    position: relative;
    width: 100%;
    max-width: 100%;
    min-width: 0;
}
.featureImages__scroller {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    overflow-x: auto;
    overflow-y: hidden;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
    outline: none;
    cursor: grab;
    /* 默认把纵向交给页面；横向由 JS 在判定方向后再接管 */
    touch-action: pan-y;
    /* 左右淡出提示还能继续滑 */
    --fade-start: 0;
    --fade-end: 0;
    mask-image: linear-gradient(
        to right,
        transparent 0,
        #000 calc(var(--fade-start) * 28px),
        #000 calc(100% - var(--fade-end) * 28px),
        transparent 100%
    );
}
.featureImages__scroller::-webkit-scrollbar {
    display: none;
}
.featureImages__scroller:focus-visible {
    outline: 1px solid rgba(255, 255, 255, 0.22);
    outline-offset: 4px;
    border-radius: 8px;
}
.featureImages.is-panning .featureImages__scroller {
    cursor: grabbing;
    scroll-snap-type: none;
}
.featureImages.is-scrolling .featureImages__scroller {
    scroll-snap-type: x mandatory;
}
.featureImages__list {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: flex-start;
    gap: 16px;
    width: max-content;
    margin: 0;
    padding: 0;
    list-style: none;
}
.featureImages__item {
    flex: 0 0 auto;
    scroll-snap-align: start;
    scroll-snap-stop: always;
}
.featureImages__shot {
    display: block;
    width: auto;
    height: auto;
    max-width: none;
    max-height: none;
    flex-shrink: 0;
    -webkit-user-drag: none;
    user-select: none;
    pointer-events: none;
}
.featureImages__nav {
    position: absolute;
    top: 50%;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 999px;
    background: rgba(8, 10, 14, 0.56);
    color: #fff;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transform: translateY(-50%);
    cursor: pointer;
}
.featureImages__nav--prev {
    left: 10px;
}
.featureImages__nav--next {
    right: 10px;
}
.featureImages__nav hd-icon {
    width: 22px;
    height: 22px;
    font-size: 22px;
}
.featureImages__nav:hover {
    background: rgba(16, 18, 22, 0.82);
    border-color: rgba(255, 255, 255, 0.28);
}
.featureImages__nav:disabled {
    opacity: 0.28;
    cursor: default;
}
.featureImages__nav:focus-visible {
    outline: 1px solid rgba(255, 255, 255, 0.4);
    outline-offset: 2px;
}
.featureImages__chrome {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 16px;
    min-height: 18px;
}
.featureImages__track {
    position: relative;
    flex: 1 1 auto;
    min-width: 0;
    height: 14px;
    cursor: pointer;
}
.featureImages__track:before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 4px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.14);
    transform: translateY(-50%);
}
.featureImages__thumb {
    position: absolute;
    top: 50%;
    left: 0;
    height: 4px;
    min-width: 36px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.58);
    transform: translateY(-50%);
    cursor: grab;
    touch-action: none;
}
.featureImages__track:hover .featureImages__thumb,
.featureImages.is-thumbing .featureImages__thumb {
    height: 6px;
    background: rgba(255, 255, 255, 0.88);
}
.featureImages.is-thumbing .featureImages__thumb {
    cursor: grabbing;
}
.featureImages__indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.featureImages__dots {
    display: flex;
    align-items: center;
    gap: 6px;
}
.featureImages__dot {
    width: 6px;
    height: 6px;
    padding: 0;
    border: none;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.22);
    cursor: pointer;
    transition:
        width 0.2s ease,
        background 0.2s ease;
}
.featureImages__dot--active {
    width: 16px;
    background: rgba(255, 255, 255, 0.88);
}
.featureImages__count {
    color: rgba(255, 255, 255, 0.58);
    font-size: 13px;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.04em;
    line-height: 1;
    white-space: nowrap;
}
.featureCard.style-right .featureImages__chrome,
.featureCard.style-bottom .featureImages__chrome {
    flex-direction: row;
}

.fetaList {
    --feta-line: rgb(59 70 82);
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    width: 100%;
    margin: 24px 0 0;
    margin-bottom: 48px;
    padding: 0;
    list-style: none;
    overflow: hidden;
    /* 外框四边完整描边，圆角由容器自己画，避免底角被格子直角边框裁切 */
    border: 1px solid var(--feta-line);
    border-radius: 16px;
}
.fetaItem {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-width: 0;
    min-height: 112px;
    padding: 35px 14px;
    text-align: center;
    background: #212932;
    /* 格线画在上/左，末行末列不再叠一层底/右边框 */
    box-shadow:
        -1px 0 0 var(--feta-line),
        0 -1px 0 var(--feta-line);
.icon-box {
        background: linear-gradient(#1f2124e3 30%, #161819cf 60%);
        display: flex;
        border-radius: 100px;
        place-content: center;
        place-items: center;
        width: 52px;
        height: 52px;
        margin-bottom: 12px;
        margin-bottom: 0.3em;
        box-shadow:
            rgb(0 0 0 / 12%) 0px 2px 4px 0px,
            rgb(0 0 0 / 22%) 0px 6px 8px 0px,
            rgba(213, 229, 255, 0.165) 0px 1px 1px 0px inset,
            rgba(255, 255, 255, 0.08) 0px -1px 0px 0px inset,
            rgba(255, 255, 255, 0.03) 0px -3px 3px 0px inset;
}
}
.fetaItem__icon,
.fetaItem__iconImg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}
.fetaItem__icon {
    color: rgb(158 187 220);
    font-size: 24px;
    line-height: 1;
}
.fetaItem__iconImg {
    object-fit: contain;
}
.fetaItem__name {
    color: rgb(159 181 197 / 92%);
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 1px;
    line-height: 1.35;
}

/* 卡片按 2x 显示时，超出容器才缩小，不拉伸超过真实 CSS 尺寸。 */
video.qpageVideo--density {
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

.featureCard {
    display: flex;
    flex-direction: column;
    min-width: 0;
}
.featureCard__media {
    min-width: 0;
    max-width: 100%;
}
.featureCard > .fetaList {
    align-self: stretch;
}
.featureCard > .fetaList:first-child {
    margin-top: 0;
}
.featureCard .featureCard-text {
    margin-top: 24px;
}
.featureCard .featureCard-text h3 {
    font-size: 24px;
    margin: 0;
    margin-bottom: 1em;
}
.featureCard .featureCard-text p {
    font-size: 18px;
    margin: 0;
    margin-bottom: 1.2em;
    color: var(--text-muted);
}
.featureCard .featureCard-text h3 + p {
    margin-top: -0.7em;
}

/* 卡片视频按 2x CSS 尺寸排布，容器更窄时再缩小。 */
.featureCard__video_box {
    max-width: 100%;
    width: fit-content;
}
.featureCard__video_box .featureCard__shot {
    display: block;
    max-width: 100%;
    height: auto;
}
.featureCard .image-desc {
    font-size: 14px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 1em;
    margin-left: 0.2em;
}

/* style-center */
.featureCard.style-center .featureCard__media {
    margin: auto;
}
/* style-right */
.featureCard.style-right {
    place-items: center;
}
.featureCard.style-right .featureCard__media {
    place-items: flex-end;
}
.featureCard.style-right .featureCard-text {
    text-align: right;
}
/* style-bottom */
.featureCard.style-bottom .featureCard__media {
    display: flex;
    flex-direction: column-reverse;
    place-items: flex-end;
}
.featureCard.style-bottom .featureCard-text {
    text-align: right;
}

.platformIcons {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.platformIcon {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.62);
    outline: none;
    gap: 4px;
}
.platformIcon hd-icon {
    width: 15px;
    height: 15px;
    font-size: 15px;
    line-height: 1;
}
.platformIcon:hover,
.platformIcon:focus-visible {
    color: rgba(255, 255, 255, 0.94);
}
.platformIconTip {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    z-index: 4;
    padding: 4px 8px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 6px;
    background: rgba(12, 14, 18, 0.96);
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.4);
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.01em;
    line-height: 1.2;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transform: translateX(-50%) translateY(2px);
    transition:
        opacity 0.15s ease,
        transform 0.15s ease;
}
.platformIconTip:after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    border: 5px solid transparent;
    border-top-color: rgba(12, 14, 18, 0.96);
    transform: translateX(-50%);
}
.platformIconLabel {
    white-space: nowrap;
}
.platformIcon:hover .platformIconTip,
.platformIcon:focus-visible .platformIconTip {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.langDropdownTrigger .lang-icon {
    width: 18px;
    height: 18px;
    font-size: 18px;
}

.headerProducts {
    display: flex;
    flex-shrink: 0;
    place-items: center;
}
.headerProductsLayer {
.author-bar {
        width: 100%;
        display: flex;
        place-items: center;
        margin-top: 14px;
        place-content: center;
.siteFooterAuthor {
            padding: 6px 8px;
            padding-right: 17px;
            border-radius: 22px;
            background: rgba(255, 255, 255, 0.07);
            font-size: 14px;
            border: 1px solid transparent;
img {
                width: 24px;
                height: 24px;
                border-radius: 0;
}
&:hover {
                background: rgba(255, 255, 255, 0.15);
                border: 1px solid var(--surface-border);
}
}
}
}

.downloadButtonGroup {
    display: inline-flex;
    align-items: stretch;
    position: relative;
    min-width: 170px;
    background: #fff;
}
.downloadButtonGroup.heroPrimaryBtn {
    padding: 0;
    overflow: visible;
}

/* Hover 渐变铺在整组上，主按钮和右侧下拉共用 */
.downloadButtonGroup::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(#ffffff 52%, #c2c1c1 100%);
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
    pointer-events: none;
    border-radius: inherit;
}
.downloadButtonGroup:hover::before,
.downloadButtonGroup.is-open::before,
.downloadButtonGroup.is-downloading::before {
    opacity: 1;
}
.downloadButtonGroup > * {
    position: relative;
    z-index: 1;
}
.downloadButtonGroup .downloadMenu {
    z-index: 20;
}
.downloadButton,
.heroPrimaryBtn .downloadButton {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    flex: 1;
    gap: 8px;
    min-width: 0;
    min-height: 48px;
    padding: 0 10px;
    border-radius: inherit;
    background: transparent;
    color: inherit;
    font: inherit;
    text-decoration: none;
}
.downloadButtonGroup.has-variants .downloadButton {
    border-radius: 999px 0 0 999px;
    padding-right: 8px;
}
.downloadMenuTrigger {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 30px;
    padding: 0;
    padding-right: 16px;
    border: none;
    border-radius: 0 999px 999px 0;
    background: transparent;
    color: inherit;
    font: inherit;
    cursor: pointer;
}
.downloadMenuTrigger::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: -10px;
    width: 1px;
    height: 15px;
    margin: auto;
    background: rgb(0 0 0 / 17%);
}
.downloadMenuChevron {
    width: 18px;
    height: 18px;
    font-size: 18px;
    line-height: 1;
    transition: transform 0.15s ease;
}
.downloadMenuTrigger.is-open .downloadMenuChevron {
    transform: rotate(180deg);
}
.downloadMenu {
    display: flex;
    flex-direction: column;
    gap: 4px;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: max(100%, 260px);
    padding: 6px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.28);
    color: #111;
}
.downloadMenuItem {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 40px;
    padding: 8px 10px;
    border-radius: 10px;
    color: rgba(0, 0, 0, 0.78);
    font-size: 13px;
    font-weight: 550;
    text-decoration: none;
    text-align: left;
}
.downloadMenuItem:hover,
.downloadMenuItem.is-active {
    color: #111;
    background: rgba(0, 0, 0, 0.06);
}
.downloadMenuItemIcon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    font-size: 16px;
    line-height: 1;
}
.downloadMenuItemText {
    display: flex;
    flex-direction: column;
    gap: 1px;
    min-width: 0;
    flex: 1;
}
.downloadMenuItemLabel {
    white-space: nowrap;
}
.downloadMenuItemHint {
    color: rgba(0, 0, 0, 0.45);
    font-size: 11px;
    font-weight: 500;
    white-space: nowrap;
}
.downloadMenuItemSize {
    color: rgba(0, 0, 0, 0.42);
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
}
.downloadMenuItemCheck {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    font-size: 16px;
    line-height: 1;
}
.downloadMenuItemCheck hd-icon {
    width: 16px;
    height: 16px;
}
.downloadButton .download-title .ext {
    font-weight: normal;
    margin-left: 0.4em;
    opacity: 0.8;
}
.downloadButton .download-title {
    width: auto;
    flex: auto;
    padding-right: 8px;
    white-space: nowrap;
    display: flex;
    place-content: center;
    place-items: center;
}
.downloadButtonIcon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    font-size: 18px;
    line-height: 1;
}
.downloadButton .download-anime-box {
    position: relative;
    background: currentColor;
    width: 28px;
    height: 28px;
    border-radius: 4em;
    display: flex;
    place-items: center;
    place-content: center;
    overflow: hidden;
}
.downloadButton .downloadButtonIcon {
    color: #fff;
}
.downloadButton .downloadButtonIcon.is-next {
    position: absolute;
    top: 5px;
    left: 5px;
    transform: translateY(-28px);
}
.downloadButtonGroup.is-web-app .downloadButton .downloadButtonIcon.is-next {
    transform: translateX(-28px);
}

/* 当前箭头滑出底部，新箭头从顶部进入；hover 播放一次，下载中持续循环。 */
.downloadButton:hover .downloadButtonIcon,
.downloadButton.is-downloading .downloadButtonIcon {
    animation-duration: 400ms;
    animation-timing-function: ease-in-out;
}
.downloadButton:hover .downloadButtonIcon.is-current,
.downloadButton.is-downloading .downloadButtonIcon.is-current {
    animation-name: download-button-current-arrow;
}
.downloadButton:hover .downloadButtonIcon.is-next,
.downloadButton.is-downloading .downloadButtonIcon.is-next {
    animation-name: download-button-next-arrow;
}
.downloadButtonGroup.is-web-app .downloadButton:hover .downloadButtonIcon.is-current {
    animation-name: web-app-button-current-arrow;
}
.downloadButtonGroup.is-web-app .downloadButton:hover .downloadButtonIcon.is-next {
    animation-name: web-app-button-next-arrow;
}
.downloadButton.is-downloading .downloadButtonIcon {
    animation-iteration-count: infinite;
}
@keyframes download-button-current-arrow {
0% {
        transform: translateY(0);
}
100% {
        transform: translateY(28px);
}
}
@keyframes download-button-next-arrow {
0% {
        transform: translateY(-28px);
}
100% {
        transform: translateY(0);
}
}
@keyframes web-app-button-current-arrow {
0% {
        transform: translateX(0);
}
100% {
        transform: translateX(28px);
}
}
@keyframes web-app-button-next-arrow {
0% {
        transform: translateX(-28px);
}
100% {
        transform: translateX(0);
}
}
:root {
    --font-sans:
        "GeneralSans-Variable", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI",
        sans-serif;
    --brand-font: "Pally-Variable", "GeneralSans-Variable", "SF Pro Display", sans-serif;
    --brand-color: linear-gradient(#838383 30%, #fff 60%);

    --feature-group-gap: 48px;
    --page-gutter: 24px;
    --card-radius: 28px;
    --accent: #8ec5ff;
    --surface: rgba(255, 255, 255, 0.04);
    --surface-border: rgba(255, 255, 255, 0.08);
    --text-muted: rgba(255, 255, 255, 0.72);

    color: #fff;
    background: #000;
    font-family: var(--font-sans);
    font-synthesis: none;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}
@font-face {
    font-family: "GeneralSans-Variable";
    src: url("./GeneralSans-Variable-p1VyP7gg.woff2") format("woff2");
    font-style: normal;
    font-weight: 200 700;
    font-display: swap;
}

@font-face {
    font-family: "Pally-Variable";
    src: url("./Pally-Variable-L8DHh7OG.woff2") format("woff2");
    font-style: normal;
    font-weight: 400 700;
    font-display: swap;
}

* {
    box-sizing: border-box;
}

html {
    min-width: 320px;
    scroll-behavior: smooth;
    background: #000;
}

body {
    min-width: 320px;
    margin: 0;
    overflow-x: hidden;
    background: #000;
}

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

a {
    color: unset;
    text-decoration-color: #9999999c;
    text-decoration-thickness: 0.5px;
    text-underline-offset: 3px;
}

a:hover {
    text-decoration-color: #999999d8;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

button {
    font: inherit;
}

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

hd-icon {
    display: inline-flex;
    width: 1em;
    height: 1em;
}

.homePage {
    width: min(100%, 900px);
    min-height: 100vh;
    margin: 0 auto;
}

.heroMedia {
    display: flex;
    justify-content: center;
    padding: 0 var(--page-gutter) 32px;
}

img.hero-shot,
video.hero-shot {
    margin: 0 auto;
    border-radius: 20px;
}

video.hero-shot {
    width: 756px;
    height: 491px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: #111;
}

/* Header */

.stickyHeaderShell {
    position: sticky;
    top: 0;
    z-index: 100;
}

.stickyHeader {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 10px 24px;
    /* 保证页头内的语言菜单显示在产品展开层之上。 */
    z-index: 101;
    background: rgba(0, 0, 0, 0.78);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(18px) saturate(1.2);
    -webkit-backdrop-filter: blur(18px) saturate(1.2);
}

.stickyHeader:after {
    z-index: 1;
    content: "";
    pointer-events: none;
    opacity: 0;
    background: linear-gradient(
        90deg,
        #0000 0%,
        #ffffff1a 15%,
        #ffffff40 35% 60%,
        #ffffff21 85%,
        #0000 100%
    );
    height: 0.5px;
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    transition: opacity 1s ease;
}

.stickyHeader--scrolled:after {
    opacity: 1;
}

.stickyHeader .header-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: min(100%, 1200px);
    margin: 0 auto;
}

.stickyHeaderBrand {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 0;
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.stickyHeaderBrand:hover {
    transform: scale(1.02) translateY(0);
}
.stickyHeaderBrand .heroTitle {
    font-size: 22px;
}

.stickyHeaderActions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    min-width: 0;
}

.stickyHeaderNav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 8px 16px;
}

.stickyHeaderLink {
    color: rgba(255, 255, 255, 0.72);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: -0.01em;
    text-decoration: none;
    transition: color 0.15s ease;
    white-space: nowrap;
}

.stickyHeaderLink.download {
    min-width: 100px;
    text-align: center;
}

.stickyHeaderLink:hover {
    color: #fff;
}

.stickyHeaderLink--action,
.stickyHeaderLink--external {
    color: rgba(255, 255, 255, 0.88);
}

.stickyHeaderLink--action {
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.06);
}

.stickyHeaderLink--action:hover {
    color: #000;
    background: #fff;
    border-color: #fff;
}

/* Hero */

.hero {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: min(calc(100vh - 200px), 820px);
    padding: 72px 24px 42px;
    z-index: 30;
}

.heroBk {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.heroInner {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 640px;
}

.heroIcon {
    width: 256px;
    height: 256px;
    margin-bottom: 28px;
    border-radius: 36px;
}

.heroTitle {
    margin: 0;
    color: #0000;
    background: var(--brand-color);
    -webkit-background-clip: text;
    background-clip: text;
    font-family: var(--brand-font);
    font-size: clamp(52px, 9vw, 80px);
    font-weight: 700;
    letter-spacing: -0.05em;
    line-height: 1.05;
    padding: 8px;
}

.heroTagline {
    margin: 16px 0 0;
    color: var(--text-muted);
    font-size: clamp(17px, 2.4vw, 20px);
    font-weight: 450;
    letter-spacing: -0.01em;
    line-height: 1.45;
}

.heroActions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 32px;
}

.heroPrimaryBtn,
.heroSecondaryBtn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 20px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.01em;
    text-decoration: none;
    transition:
        background 0.15s ease,
        color 0.15s ease,
        border-color 0.15s ease;
}

.heroPrimaryBtn {
    color: #000;
    background: #fff;
}

.heroPrimaryBtn:hover {
    background: #fff;
}

.downloadBtn {
    min-width: 140px;
}

/* ---------------- */

.donwload-info {
    margin-top: 18px;
    left: 0;
    width: 100%;
    min-height: 20px;
    overflow: visible;

    font-size: 13px;

    color: rgba(255, 255, 255, 0.52);
    display: flex;
    font-weight: normal;
    white-space: nowrap;
    place-content: center;
    place-items: center;
}

.donwload-info .dv {
    margin: 6px;
}
/* ---------------- */

.heroSecondaryBtn {
    color: #fff;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.22);
}

.heroSecondaryBtn:hover {
    border-color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.06);
}

/* Sections */

.featureCollection {
    margin: auto;
    position: relative;
    scroll-margin-top: 72px;
    width: 100%;
}

.featureCollection + .featureCollection {
    margin-top: 80px;
}

.pageSectionHeading {
    margin-top: 46px;
    margin-bottom: 46px;
}

.pageSectionHeading h2 {
    margin: 0;
    color: #fff;
    font-size: clamp(32px, 5vw, 44px);
    font-weight: 700;
    letter-spacing: -0.035em;
    line-height: 1.15;
}

.pageSectionHeading p {
    max-width: 680px;
    margin: 14px 0 0;
    color: var(--text-muted);
    font-size: clamp(18px, 2vw, 20px);
    line-height: 1.8;
    white-space: pre-line;
}

.featureCollection__cards {
    display: flex;
    flex-direction: column;
    gap: var(--feature-group-gap);
}

/* Cards */

/* Footer */

.siteFooter {
    margin-top: 96px;
    padding: 0 var(--page-gutter) 40px;
}

.siteFooterInner {
    width: min(100%, 1100px);
    margin: 0 auto;
    border-top: 1px solid var(--surface-border);
}

.siteFooterHero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
    min-height: 224px;
    padding: 48px 0;
}

.siteFooterHeroCopy {
    min-width: 0;
}

.siteFooterBrand {
    display: flex;
    align-items: center;
    width: fit-content;
    gap: 6px;
    color: #fff;
    text-decoration: none;
}

.siteFooterBrand img {
    width: 96px;
    height: 96px;
    flex-shrink: 0;
}

.siteFooterBrand h2 {
    margin: 0;
    font-family: var(--brand-font);
    font-size: clamp(36px, 6vw, 52px);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1;
}

.siteFooterTagline {
    max-width: 600px;
    margin: 18px 0 0;
    color: var(--text-muted);
    font-size: 18px;
    line-height: 1.55;
    margin-left: 8px;
}

.siteFooterHeroActions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.siteFooterPrimaryAction,
.siteFooterSecondaryAction {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 18px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition:
        color 0.15s ease,
        background 0.15s ease,
        border-color 0.15s ease;
}

.siteFooterPrimaryAction {
    color: #000;
    background: #fff;
}

.siteFooterPrimaryAction:hover {
}

.siteFooterSecondaryAction {
    color: rgba(255, 255, 255, 0.88);
    border-color: rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.05);
}

.siteFooterSecondaryAction:hover {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.09);
}

.siteFooterProducts {
    scroll-margin-top: 72px;
    padding: 48px 0 56px;
    border-top: 1px solid var(--surface-border);
}

.siteFooterProducts > h2,
.siteFooterDirectoryGroup h2 {
    margin: 0;
    color: rgba(255, 255, 255, 0.42);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.08em;
    line-height: 1.4;
    text-transform: uppercase;
}

.siteFooterProductGrid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: 20px;
}

.siteFooterProduct {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 14px;
    padding: 12px;
    color: #fff;
    border: 1px solid var(--surface-border);
    border-radius: 22px;
    background: var(--surface);
    text-decoration: none;
    overflow: visible;
    transition: all 0.3s ease;
}

.siteFooterProductPlatforms {
    justify-self: end;
    flex-shrink: 0;
    padding-right: 12px;
}

.siteFooterProduct:hover {
    border-color: rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.07);
}

.siteFooterProduct img {
    width: 64px;
    height: 64px;
}

.siteFooterProductCopy {
    display: flex;
    min-width: 0;
    flex-direction: column;
    gap: 4px;
}

.siteFooterProductCopy strong {
    overflow: hidden;
    font-size: 18px;
    font-weight: 700;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-family: var(--brand-font);
}

.siteFooterProductTagline {
    overflow: hidden;
    color: rgba(255, 255, 255, 0.48);
    font-size: 15px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.siteFooterProductGrid--compact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin-top: 0;
}

.siteFooterProductGrid--compact .siteFooterProduct {
    min-height: 72px;
    padding: 12px 14px;
    border-radius: 14px;
}

.siteFooterProductGrid--compact .siteFooterProduct img {
    width: 64px;
    height: 64px;
}

.siteFooterProductGrid--compact .siteFooterProductCopy strong {
    font-size: 16px;
}

.siteFooterProductGrid--compact .siteFooterProductTagline {
    font-size: 13px;
}

.headerProductsTrigger {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 0;
    border: none;
    background: none;
    cursor: pointer;
    color: rgba(255, 255, 255, 0.72);
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: -0.01em;
}

.headerProductsMenuIcon {
    display: none;
}

.headerProductsTrigger:hover,
.headerProductsTrigger--open {
    color: #fff;
}

.headerProductsChevron {
    width: 14px;
    height: 14px;
    color: rgba(255, 255, 255, 0.48);
    transition: transform 0.15s ease;
}

.headerProductsTrigger--open .headerProductsChevron {
    transform: rotate(180deg);
}

.headerProductsLayer {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 99;
    overflow: visible;
    transition: all 0.4s ease-in-out;
    transition: opacity 0.2s ease-in-out;
    opacity: 0;
    pointer-events: none;
    padding: 12px 24px 16px;
    background: rgba(0, 0, 0, 0.56);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(18px) saturate(1.2);
    -webkit-backdrop-filter: blur(18px) saturate(1.2);
}

.stickyHeaderShell--productsOpen .headerProductsLayer {
    opacity: 1;
    pointer-events: auto;
    transition: all 0.5s ease-in-out;
    transition: opacity 0.3s ease-in-out;
    box-shadow:
        0 8px 16px #00000066,
        0 20px 40px #0000004f;
}

.headerProductsLayerInner {
    width: min(100%, 1200px);
    margin: 0 auto;
}

.headerProductsLayer .siteFooterProductGrid--compact {
    gap: 10px;
}

.headerProductsLayer .siteFooterProduct {
    min-height: 68px;
    padding: 4px 5px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.07);
 
}

.headerProductsLayer .siteFooterProduct:hover {
    background: rgba(255, 255, 255, 0.15);
}

.siteFooterDirectory {
    display: grid;
    grid-template-columns: repeat(2, minmax(160px, 220px));
    justify-content: start;
    gap: 56px;
    padding: 48px 0 64px;
    border-top: 1px solid var(--surface-border);
}

.siteFooterDirectoryGroup nav,
.siteFooterContactLinks {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    margin-top: 24px;
}

.siteFooterDirectoryGroup a {
    color: rgba(255, 255, 255, 0.68);
    font-size: 16px;
    line-height: 1.4;
    text-decoration: none;
    transition: color 0.15s ease;
}

.siteFooterDirectoryGroup a:hover {
    color: #fff;
}

.siteFooterContactLinks a {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.siteFooterContactLinks hd-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: rgba(255, 255, 255, 0.52);
    font-size: 24px;
    line-height: 1;
}

.siteFooterContactLinks svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: rgba(255, 255, 255, 0.52);
}

.siteFooterBottom {
    display: flex;
    align-items: center;
    min-height: 56px;
    padding-top: 20px;
    color: rgba(255, 255, 255, 0.6);
    border-top: 1px solid var(--surface-border);
    font-size: 15px;
}

.siteFooterAuthor {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: inherit;
    text-decoration: none;
    transition: color 0.15s ease;
}

.siteFooterAuthor:hover {
    color: rgba(255, 255, 255, 0.72);
}

.siteFooterAuthor img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

/* Language */

.langDropdown {
    position: relative;
    display: inline-block;
    flex-shrink: 0;
}

.langDropdownTrigger {
    display: inline-flex;
    gap: 6px;
    align-items: center;
    justify-content: center;
    height: 32px;
    padding: 0 12px;
    font: inherit;
    font-size: 13px;
    font-weight: 500;
    border-radius: 999px;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.88);
    cursor: pointer;
}

.langDropdownTrigger hd-icon {
    width: 14px;
    height: 14px;
}

.langChevron {
    transition: transform 0.15s ease;
}

.langChevron--open {
    transform: rotate(180deg);
}

.langDropdownMenu {
    display: flex;
    flex-direction: column;
    gap: 4px;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    z-index: 120;
    min-width: 148px;
    padding: 6px;
    background: rgba(12, 14, 18, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 14px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.langDropdownItem {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 12px;
    color: rgba(255, 255, 255, 0.78);
    font-size: 13px;
    text-decoration: none;
    border-radius: 8px;
}

.langDropdownItem:hover,
.langDropdownItem--active {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}
/* 移动模式集中在独立文件中，桌面基础样式保持稳定且便于按端维护。 */
@media (max-width: 860px) {
    :root {
        --feature-group-gap: 28px;
        --page-gutter: 24px;
        --card-radius: 20px;
    }

    /* 顶栏保留关键操作，收起占用横向空间的章节导航。 */
    .stickyHeader {
        padding: 8px max(var(--page-gutter), env(safe-area-inset-right)) 8px
            max(var(--page-gutter), env(safe-area-inset-left));
    }

    .stickyHeader .header-main {
        gap: 10px;
    }

    .stickyHeaderBrand {
        min-width: 0;
    }

    .stickyHeaderBrand img {
        width: 28px;
        height: 28px;
        flex-shrink: 0;
    }

    .stickyHeaderBrand .heroTitle {
        overflow: hidden;
        padding: 4px;
        font-size: 19px;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .stickyHeaderActions,
    .stickyHeaderNav {
        gap: 8px;
        flex-wrap: nowrap;
    }

    .stickyHeaderNav
        .stickyHeaderLink:not(.stickyHeaderLink--action):not(.stickyHeaderLink--external):not(
            .headerProductsTrigger
        ) {
        display: none;
    }

    .stickyHeaderLink.download {
        min-width: 0;
    }

    /* 窄屏顶栏空间不够放「更多产品」文字，改成菜单图标。 */
    .headerProductsLabel,
    .headerProductsChevron {
        display: none;
    }

    .headerProductsMenuIcon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 20px;
        height: 20px;
        font-size: 20px;
        line-height: 1;
        flex-shrink: 0;
    }

    .headerProductsTrigger {
        width: 32px;
        height: 32px;
        padding: 0;
        line-height: 0;
        align-items: center;
        justify-content: center;
    }

    .headerProductsLayer {
        max-height: calc(100dvh - 52px);
        overflow-y: auto;
        padding: 10px var(--page-gutter) 14px;
        overscroll-behavior: contain;
    }

    .langDropdownTrigger {
        padding: 0 8px;
    }

    /* Hero 在窄屏降低视觉体量，并让媒体始终保持原始比例。 */
    .hero {
        min-height: auto;
        padding: 48px var(--page-gutter) 28px;
    }

    .heroInner {
        width: 100%;
    }

    .heroIcon {
        width: 120px;
        height: 120px;
        margin-bottom: 20px;
        border-radius: 28px;
    }

    .heroTitle {
        font-size: clamp(44px, 12vw, 64px);
    }

    .heroTagline {
        max-width: 34rem;
        font-size: 17px;
    }

    .donwload-info {
        flex-wrap: wrap;
        row-gap: 2px;
        white-space: normal;
    }

    .heroMedia {
        padding-bottom: 20px;
    }

    img.hero-shot,
    video.hero-shot {
        width: 100%;
        height: auto;
        border-radius: 16px;
    }

    video.hero-shot {
        aspect-ratio: 756 / 491;
        object-fit: cover;
    }

    /* 内容区加入统一安全边距，长文与媒体不会贴住屏幕边缘。 */
    .featureCollection {
        padding-inline: var(--page-gutter);
        scroll-margin-top: 60px;
    }

    .featureCollection + .featureCollection {
        margin-top: 56px;
    }

    .pageSectionHeading {
        margin-top: 36px;
        margin-bottom: 28px;
    }

    .pageSectionHeading h2 {
        font-size: clamp(30px, 8vw, 38px);
    }

    .pageSectionHeading p {
        margin-top: 12px;
        font-size: 17px;
        line-height: 1.65;
    }

    .featureCard .featureCard-text {
        margin-top: 18px;
    }

    .featureCard .featureCard-text h3 {
        font-size: 21px;
    }

    .featureCard .featureCard-text p {
        font-size: 16px;
        line-height: 1.6;
    }

    .fetaList {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        margin-top: 20px;
        border-radius: 14px;
    }

    .fetaItem {
        min-height: 96px;
        padding: 18px 12px;
    }

    .fetaItem__icon,
    .fetaItem__iconImg {
        width: 24px;
        height: 24px;
    }

    .fetaItem__icon {
        font-size: 24px;
    }

    .fetaItem__name {
        font-size: 14px;
    }

    .featureCard.style-right,
    .featureCard.style-right .featureCard__media {
        align-items: stretch;
    }

    .featureCard.style-right .featureCard-text {
        text-align: left;
    }

    /* 图片铺满卡片；视频保持 2x CSS 尺寸，只在容器更窄时缩小。 */
    img.featureCard__shot {
        width: 100%;
        height: auto;
    }

    .featureImages__nav {
        width: 44px;
        height: 44px;
    }

    .featureImages__chrome {
        gap: 10px;
    }

    .featureImages__dots {
        display: none;
    }

    .featureImages__shot {
        width: auto;
        max-width: none;
        max-height: none;
    }

    /* 页脚改为纵向信息流，产品卡片保持足够大的触控区域。 */
    .siteFooter {
        margin-top: 64px;
        padding-bottom: max(28px, env(safe-area-inset-bottom));
    }

    .siteFooterHero {
        align-items: flex-start;
        flex-direction: column;
        gap: 28px;
        min-height: 0;
        padding: 40px 0;
    }

    .siteFooterBrand img {
        width: 76px;
        height: 76px;
    }

    .siteFooterTagline {
        margin-left: 0;
        font-size: 17px;
    }

    .siteFooterProductGrid,
    .siteFooterProductGrid--compact {
        grid-template-columns: 1fr;
    }

    .siteFooterProduct {
        min-height: 76px;
    }

    .siteFooterDirectory {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 40px;
    }
}

@media (max-width: 520px) {
    :root {
        --feature-group-gap: 24px;
        --page-gutter: 20px;
    }

    .stickyHeaderActions,
    .stickyHeaderNav {
        gap: 4px;
    }

    .stickyHeaderLink--action {
        padding-inline: 10px;
    }

    .hero {
        padding-top: 40px;
    }

    .heroIcon {
        width: 96px;
        height: 96px;
        border-radius: 23px;
    }

    .heroTitle {
        max-width: 100%;
        overflow-wrap: anywhere;
        font-size: clamp(38px, 13vw, 52px);
    }

    .heroTagline {
        font-size: 16px;
    }

    .heroActions {
        width: 100%;
        margin-top: 26px;
    }

    .heroPrimaryBtn,
    .heroSecondaryBtn {
        width: 100%;
        min-height: 50px;
    }

    .heroPrimaryBtn.downloadButton,
    .heroPrimaryBtn.downloadButtonGroup {
        width: 100%;
    }

    .pageSectionHeading {
        margin-top: 30px;
        margin-bottom: 24px;
    }

    .featureCard.style-bottom .featureCard__media {
        align-items: stretch;
    }

    .featureCard.style-bottom .featureCard-text {
        text-align: left;
    }

    .siteFooterHeroActions {
        width: 100%;
        flex-direction: column;
    }

    .siteFooterPrimaryAction,
    .siteFooterSecondaryAction {
        width: 100%;
        min-height: 48px;
    }

    .siteFooterProducts {
        padding: 40px 0 44px;
    }

    .siteFooterProduct {
        grid-template-columns: auto minmax(0, 1fr) auto;
        gap: 10px;
        padding: 14px;
        border-radius: 18px;
    }

    .siteFooterProduct img,
    .siteFooterProductGrid--compact .siteFooterProduct img {
        width: 54px;
        height: 54px;
    }

    .siteFooterProductPlatforms {
        grid-column: auto;
        justify-self: end;
        padding-right: 0;
    }

    .siteFooterDirectory {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 40px 0 48px;
    }

    .siteFooterBottom {
        font-size: 14px;
    }
}

/* 触屏设备不依赖 hover，聚焦态仍保留键盘可访问反馈。 */
@media (hover: none) and (pointer: coarse) {
    .stickyHeaderBrand:hover,
    .siteFooterProduct:hover {
        transform: none;
    }
}

/* 系统要求减少动态效果时，关闭装饰性滚动和过渡动画。 */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}
:root {
  --brand-color: linear-gradient(#8ea8c7 30%, #dae6ed 60%);
}
.featureImages__item {
  border-radius: 30px;
  overflow: hidden;
}

.heroMedia {
  &::before {
    content: "";
    position: absolute;
    width: 400px;
    height:  300px;
    background: rgb(33, 207, 255);
    filter: blur(160px);
    border-radius: 30px;
  }
}

img.hero-shot,
video.hero-shot {
  z-index: 1;
}