*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

:root {
    --page: #f5f8ff;
    --surface: rgba(255, 255, 255, 0.82);
    --surface-solid: #ffffff;
    --ink: #151824;
    --muted: #697086;
    --line: rgba(71, 84, 135, 0.12);
    --brand: #5968ef;
    --brand-deep: #4054e8;
    --brand-soft: #eef0ff;
    --green: #20b86b;
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 16px;
    --shadow: 0 24px 80px rgba(62, 76, 151, 0.12);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    min-width: 320px;
    min-height: 100vh;
    background: var(--page);
    color: var(--ink);
    font-family: var(--font);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

body.page-leaving {
    pointer-events: none;
    animation: pageLeaveRight 0.22s cubic-bezier(0.25, 0.8, 0.4, 1) both;
}

@keyframes pageLeaveRight {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0.94; transform: translateX(100%); }
}

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

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

button {
    color: inherit;
    font: inherit;
}

.ambient {
    position: fixed;
    z-index: -1;
    width: 620px;
    height: 620px;
    border-radius: 50%;
    filter: blur(1px);
    pointer-events: none;
}

.ambient-one {
    top: -300px;
    right: -180px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.22), rgba(102, 126, 234, 0) 68%);
}

.ambient-two {
    top: 430px;
    left: -390px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.11), rgba(139, 92, 246, 0) 68%);
}

.site-header,
main,
footer {
    width: min(1160px, calc(100% - 40px));
    margin-inline: auto;
}

.site-header {
    height: 84px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-leading {
    display: flex;
    align-items: center;
    gap: 14px;
}

.app-back-button {
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 7px 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
}

.app-back-button[hidden] {
    display: none;
}

.app-back-button:active {
    background: var(--brand-soft);
    color: var(--brand);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    font-size: 18px;
    font-weight: 760;
    letter-spacing: -0.02em;
}

.brand img {
    display: block;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(89, 104, 239, 0.2);
}

.top-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.58);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.top-nav a {
    padding: 8px 16px;
    border-radius: 999px;
    color: var(--muted);
    font-size: 14px;
    font-weight: 650;
    transition: 0.2s ease;
}

.top-nav a:hover,
.top-nav a.active {
    background: var(--surface-solid);
    color: var(--ink);
    box-shadow: 0 4px 16px rgba(46, 55, 102, 0.08);
}

.hero {
    min-height: 610px;
    display: grid;
    grid-template-columns: 1.03fr 0.97fr;
    align-items: center;
    gap: 56px;
    padding: 68px 54px;
    border: 1px solid rgba(255, 255, 255, 0.82);
    border-radius: var(--radius-xl);
    background:
        linear-gradient(120deg, rgba(255, 255, 255, 0.94), rgba(249, 250, 255, 0.72)),
        radial-gradient(circle at 88% 24%, rgba(89, 104, 239, 0.13), transparent 38%);
    box-shadow: var(--shadow);
    overflow: hidden;
    position: relative;
}

.hero::after {
    content: "";
    position: absolute;
    right: -90px;
    bottom: -140px;
    width: 380px;
    height: 380px;
    border: 1px solid rgba(89, 104, 239, 0.09);
    border-radius: 50%;
    box-shadow: 0 0 0 52px rgba(89, 104, 239, 0.025), 0 0 0 104px rgba(89, 104, 239, 0.018);
}

.hero-copy,
.product-visual {
    position: relative;
    z-index: 1;
}

.eyebrow,
.section-kicker {
    color: var(--brand);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.15em;
}

.eyebrow {
    display: flex;
    align-items: center;
    gap: 9px;
    margin-bottom: 20px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 0 5px rgba(32, 184, 107, 0.11);
}

h1 {
    font-size: clamp(46px, 5vw, 68px);
    line-height: 1.1;
    letter-spacing: -0.055em;
}

h1 span {
    background: linear-gradient(120deg, #5367ef, #765be9);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-lead {
    max-width: 520px;
    margin-top: 24px;
    color: var(--muted);
    font-size: 17px;
}

.hero-actions,
.about-actions {
    display: flex;
    align-items: stretch;
    gap: 12px;
    margin-top: 34px;
}

.primary-btn,
.secondary-btn,
.text-btn {
    border: 0;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.primary-btn {
    min-height: 62px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 13px;
    padding: 10px 23px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, #467ff4 0%, #6264ef 58%, #765be9 100%);
    color: #fff;
    font-size: 16px;
    font-weight: 760;
    box-shadow: 0 14px 30px rgba(81, 98, 235, 0.25);
}

.primary-btn small {
    display: block;
    margin-bottom: -2px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 10px;
    font-weight: 650;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.primary-btn.compact {
    min-height: 52px;
    padding: 10px 20px;
    font-size: 14px;
}

.android-mark {
    width: 34px;
    height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 11px;
    background: rgba(255, 255, 255, 0.15);
    font-size: 20px;
}

.secondary-btn {
    min-height: 62px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 10px 20px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.76);
    font-size: 14px;
    font-weight: 700;
}

.primary-btn:hover,
.secondary-btn:hover {
    transform: translateY(-2px);
}

.primary-btn:hover {
    box-shadow: 0 18px 36px rgba(81, 98, 235, 0.31);
}

.secondary-btn:hover {
    background: #fff;
    box-shadow: 0 10px 24px rgba(46, 55, 102, 0.08);
}

.primary-btn:active,
.secondary-btn:active {
    transform: scale(0.98);
}

.button-icon {
    font-size: 18px;
}

.release-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
    color: #8b91a4;
    font-size: 12px;
    font-weight: 620;
}

.release-meta i {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: #c7cad4;
}

.product-visual {
    min-height: 430px;
    display: grid;
    place-items: center;
}

.logo-stage {
    width: min(330px, 72%);
    position: relative;
}

.logo-stage > img {
    width: 100%;
    height: auto;
    display: block;
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 30px 35px rgba(75, 88, 195, 0.28));
}

.logo-glow {
    position: absolute;
    inset: 18%;
    border-radius: 50%;
    background: rgba(89, 104, 239, 0.35);
    filter: blur(50px);
}

.orbit {
    position: absolute;
    border: 1px solid rgba(89, 104, 239, 0.1);
    border-radius: 50%;
}

.orbit-one {
    width: 430px;
    height: 430px;
}

.orbit-two {
    width: 340px;
    height: 340px;
    border-style: dashed;
}

.floating-card {
    position: absolute;
    z-index: 3;
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 154px;
    padding: 11px 13px;
    border: 1px solid rgba(255, 255, 255, 0.86);
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.83);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: 0 15px 38px rgba(51, 63, 126, 0.14);
}

.floating-card b,
.floating-card small {
    display: block;
}

.floating-card b {
    font-size: 12px;
}

.floating-card small {
    margin-top: 1px;
    color: var(--muted);
    font-size: 10px;
}

.card-top {
    top: 11%;
    right: -27%;
}

.card-bottom {
    bottom: 8%;
    left: -30%;
}

.mini-icon {
    width: 31px;
    height: 31px;
    display: inline-grid;
    place-items: center;
    flex: none;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 900;
}

.mini-icon.blue {
    background: var(--brand-soft);
    color: var(--brand);
}

.mini-icon.green {
    background: rgba(32, 184, 107, 0.1);
    color: var(--green);
}

.trust-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 18px;
}

.trust-strip article {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    border: 1px solid rgba(255, 255, 255, 0.78);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.63);
}

.feature-index {
    color: var(--brand);
    font-size: 11px;
    font-weight: 850;
    letter-spacing: 0.12em;
}

.trust-strip h2 {
    font-size: 15px;
}

.trust-strip p {
    color: var(--muted);
    font-size: 12px;
}

.install-section,
.value-section {
    padding: 120px 0 80px;
}

.section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 30px;
    margin-bottom: 34px;
}

.section-heading h2,
.share-panel h2,
.about-preview h2,
.mission-copy h2,
.about-cta h2 {
    margin-top: 8px;
    font-size: clamp(28px, 3.4vw, 42px);
    line-height: 1.2;
    letter-spacing: -0.04em;
}

.section-heading > p {
    max-width: 360px;
    color: var(--muted);
    font-size: 14px;
    text-align: right;
}

.step-grid,
.value-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.step-card,
.value-grid article {
    min-height: 228px;
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.7);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.step-card:hover,
.value-grid article:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 45px rgba(55, 67, 126, 0.08);
}

.step-number,
.value-grid article > span {
    display: inline-flex;
    width: 38px;
    height: 38px;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--brand-soft);
    color: var(--brand);
    font-size: 11px;
    font-weight: 850;
}

.step-card h3,
.value-grid h3 {
    margin-top: 42px;
    font-size: 18px;
}

.step-card p,
.value-grid p {
    margin-top: 8px;
    color: var(--muted);
    font-size: 14px;
}

.share-panel,
.about-preview,
.about-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    padding: 42px 46px;
    border-radius: var(--radius-xl);
}

.share-panel {
    background:
        radial-gradient(circle at 90% 20%, rgba(255, 255, 255, 0.16), transparent 25%),
        linear-gradient(135deg, #4159e7, #6a5ce9);
    color: #fff;
    box-shadow: 0 24px 55px rgba(70, 81, 202, 0.2);
}

.share-panel .section-kicker {
    color: rgba(255, 255, 255, 0.62);
}

.share-panel p {
    max-width: 520px;
    margin-top: 10px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 14px;
}

.share-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: none;
}

.share-panel .primary-btn {
    background: #fff;
    color: var(--brand-deep);
    box-shadow: none;
}

.text-btn {
    padding: 12px;
    background: transparent;
    color: rgba(255, 255, 255, 0.82);
    font-size: 13px;
    font-weight: 700;
}

.text-btn:hover {
    color: #fff;
}

.about-preview {
    margin-top: 90px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.58);
}

.about-preview > div {
    max-width: 720px;
}

.about-preview p {
    margin-top: 12px;
    color: var(--muted);
}

.arrow-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex: none;
    color: var(--brand);
    font-size: 14px;
    font-weight: 760;
}

.arrow-link span {
    font-size: 20px;
    transition: transform 0.2s ease;
}

.arrow-link:hover span {
    transform: translate(3px, -3px);
}

footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 72px 0 36px;
    color: var(--muted);
    font-size: 12px;
}

.footer-brand {
    font-size: 14px;
}

.toast {
    position: fixed;
    z-index: 30;
    left: 50%;
    bottom: max(28px, env(safe-area-inset-bottom));
    padding: 11px 18px;
    border-radius: 999px;
    background: rgba(21, 24, 36, 0.92);
    color: #fff;
    font-size: 13px;
    font-weight: 650;
    box-shadow: 0 12px 30px rgba(12, 15, 30, 0.2);
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, 12px);
    transition: 0.24s ease;
}

.toast.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

.about-main {
    padding-top: 70px;
}

.about-hero {
    max-width: 880px;
    padding: 78px 0 90px;
}

.about-hero > p {
    max-width: 720px;
    margin-top: 28px;
    color: var(--muted);
    font-size: 18px;
}

.mission-card {
    display: grid;
    grid-template-columns: 0.7fr 1.3fr;
    align-items: center;
    gap: 76px;
    padding: 70px;
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.74);
    box-shadow: var(--shadow);
}

.mission-mark {
    display: grid;
    place-items: center;
    position: relative;
}

.mission-mark::before {
    content: "";
    position: absolute;
    width: 80%;
    height: 80%;
    border-radius: 50%;
    background: rgba(89, 104, 239, 0.16);
    filter: blur(42px);
}

.mission-mark img {
    width: min(260px, 100%);
    height: auto;
    position: relative;
    filter: drop-shadow(0 25px 28px rgba(75, 88, 195, 0.22));
}

.mission-copy p {
    max-width: 650px;
    margin-top: 18px;
    color: var(--muted);
}

.value-grid {
    grid-template-columns: repeat(4, 1fr);
}

.about-cta {
    background: #161a2b;
    color: #fff;
}

.about-cta p {
    margin-top: 10px;
    color: rgba(255, 255, 255, 0.6);
}

.risk-disclaimer {
    max-width: 920px;
    margin: 18px auto 0;
    color: var(--muted);
    font-size: 11px;
    line-height: 1.7;
    text-align: center;
}

@media (max-width: 920px) {
    .hero {
        grid-template-columns: 1fr;
        gap: 45px;
        padding: 56px 42px;
    }

    .product-visual {
        min-height: 370px;
        grid-row: 1;
    }

    .logo-stage {
        width: 260px;
    }

    .trust-strip,
    .step-grid {
        grid-template-columns: 1fr;
    }

    .trust-strip article {
        min-height: 90px;
    }

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

    .step-card h3 {
        margin-top: 28px;
    }

    .share-panel,
    .about-preview,
    .about-cta {
        align-items: flex-start;
        flex-direction: column;
    }

    .mission-card {
        grid-template-columns: 1fr;
        gap: 45px;
        padding: 55px;
    }

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

@media (max-width: 620px) {
    .site-header,
    main,
    footer {
        width: min(100% - 24px, 1160px);
    }

    .site-header {
        height: 70px;
    }

    .brand {
        gap: 8px;
        font-size: 15px;
    }

    .header-leading {
        gap: 8px;
    }

    .app-back-button {
        width: 36px;
        height: 36px;
        min-height: 36px;
        padding: 0;
        font-size: 18px;
    }

    .app-back-button span:last-child {
        display: none;
    }

    .brand img {
        width: 32px;
        height: 32px;
        border-radius: 9px;
    }

    .top-nav a {
        padding: 7px 11px;
        font-size: 12px;
    }

    .hero {
        min-height: auto;
        padding: 38px 22px 30px;
        border-radius: 25px;
    }

    .hero::after {
        display: none;
    }

    .product-visual {
        min-height: 275px;
    }

    .logo-stage {
        width: 190px;
    }

    .orbit-one {
        width: 280px;
        height: 280px;
    }

    .orbit-two {
        width: 230px;
        height: 230px;
    }

    .floating-card {
        min-width: 135px;
        padding: 9px 10px;
    }

    .card-top {
        right: -28%;
    }

    .card-bottom {
        left: -28%;
    }

    h1 {
        font-size: 42px;
    }

    .hero-lead {
        font-size: 15px;
    }

    .hero-actions,
    .about-actions {
        flex-direction: column;
    }

    .primary-btn,
    .secondary-btn {
        width: 100%;
    }

    .trust-strip {
        margin-top: 12px;
    }

    .trust-strip article {
        padding: 19px;
    }

    .install-section,
    .value-section {
        padding: 82px 0 55px;
    }

    .section-heading {
        align-items: flex-start;
        flex-direction: column;
        margin-bottom: 24px;
    }

    .section-heading > p {
        text-align: left;
    }

    .step-card,
    .value-grid article {
        padding: 23px;
    }

    .share-panel,
    .about-preview,
    .about-cta {
        gap: 28px;
        padding: 30px 24px;
        border-radius: 24px;
    }

    .share-actions {
        width: 100%;
        align-items: stretch;
        flex-direction: column;
    }

    .share-actions .primary-btn {
        width: 100%;
    }

    .about-preview {
        margin-top: 65px;
    }

    footer {
        align-items: flex-start;
        flex-direction: column;
        gap: 16px;
        padding-top: 55px;
    }

    .about-main {
        padding-top: 20px;
    }

    .about-hero {
        padding: 55px 6px 70px;
    }

    .about-hero > p {
        font-size: 16px;
    }

    .mission-card {
        gap: 36px;
        padding: 38px 24px;
        border-radius: 25px;
    }

    .mission-mark img {
        width: 190px;
    }

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

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

    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}