body {
    min-height: 100vh;
}

.site-body {
    margin: 0;
    overflow-x: hidden;
    background: #08080F;
    color: #F5F8FA;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

.site-body a {
    color: inherit;
    text-decoration: none;
}

.site-nav {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: min(1180px, calc(100vw - 32px));
    margin: 0 auto;
    padding: 18px 0;
    backdrop-filter: blur(16px);
}

.brand,
.site-nav nav,
.hero-actions,
.metric-row {
    display: flex;
    align-items: center;
}

.brand {
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: #F5F8FA;
    line-height: 1;
}

.brand img {
    display: block;
    width: 44px;
    height: auto;
    border-radius: 12px;
    object-fit: contain;
}

.site-nav nav {
    gap: 18px;
    color: #9CA0AE;
    font-size: 14px;
}

.site-nav nav a {
    transition: color .2s ease, transform .2s ease;
}

.site-nav nav a:hover {
    color: #fff;
    transform: translateY(-1px);
}

.nav-admin,
.secondary-link {
    border: 1px solid rgba(255, 255, 255, .16);
    border-radius: 8px;
    padding: 9px 13px;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, .95fr) minmax(360px, 1.05fr);
    gap: 52px;
    align-items: center;
    width: min(1180px, calc(100vw - 32px));
    min-height: calc(100vh - 78px);
    margin: 0 auto;
    padding: 32px 0 78px;
}

.eyebrow {
    margin: 0 0 12px;
    color: #E50914;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.hero h1 {
    margin: 0;
    color: #fff;
    font-size: clamp(44px, 7vw, 84px);
    line-height: .98;
    letter-spacing: 0;
}

.lead {
    max-width: 610px;
    margin: 22px 0 0;
    color: #9CA0AE;
    font-size: 19px;
    line-height: 1.8;
}

.hero-actions {
    gap: 12px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.primary-link,
.secondary-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    border-radius: 8px;
    padding: 0 18px;
    font-weight: 800;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.primary-link {
    background: #E50914;
    color: #F5F8FA;
    box-shadow: 0 16px 40px rgba(229, 9, 20, .28);
}

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

.secondary-link {
    color: #F5F8FA;
}

.secondary-link:hover {
    border-color: rgba(255, 255, 255, .32);
}

.hero-visual {
    position: relative;
    min-height: 560px;
}

.device-frame {
    position: absolute;
    inset: 20px 0 0 auto;
    width: min(430px, 100%);
    aspect-ratio: 1440 / 3200;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: 34px;
    background:
        linear-gradient(160deg, rgba(229, 9, 20, .28), transparent 42%),
        #15151E;
    box-shadow: 0 34px 90px rgba(0, 0, 0, .45);
    animation: floatDevice 6s ease-in-out infinite;
}

.device-frame::before {
    content: "";
    position: absolute;
    inset: 12px;
    z-index: 2;
    border: 1px solid rgba(255, 255, 255, .10);
    border-radius: 24px;
    pointer-events: none;
}

.phone-carousel {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    overflow: hidden;
    cursor: grab;
    touch-action: pan-y;
    user-select: none;
}

.phone-carousel.is-dragging {
    cursor: grabbing;
}

.carousel-track {
    display: flex;
    width: 100%;
    height: 100%;
    will-change: transform;
}

.carousel-slide {
    flex: 0 0 100%;
    width: 100%;
    height: 100%;
    background: #08080F;
}

.carousel-slide img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    pointer-events: none;
}

.carousel-dots {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 16px;
    z-index: 4;
    display: flex;
    justify-content: center;
    gap: 8px;
}

.carousel-dots span {
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .38);
    transition: width .25s ease, background .25s ease;
    cursor: pointer;
}

.carousel-dots span.active {
    width: 22px;
    background: #E50914;
}

.scan-line {
    position: absolute;
    left: 0;
    right: 0;
    top: -20%;
    height: 28%;
    background: linear-gradient(180deg, transparent, rgba(229, 9, 20, .24), transparent);
    animation: scan 5s linear infinite;
}

.float-card {
    position: absolute;
    z-index: 3;
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: 8px;
    background: rgba(21, 21, 30, .88);
    color: #F5F8FA;
    padding: 14px 16px;
    box-shadow: 0 18px 48px rgba(0, 0, 0, .28);
    backdrop-filter: blur(16px);
    animation: floatCard 5s ease-in-out infinite;
}

.card-one {
    left: 4%;
    top: 22%;
}

.card-two {
    right: 0;
    bottom: 14%;
    animation-delay: -1.7s;
}

.section,
.control-band {
    width: min(1180px, calc(100vw - 32px));
    margin: 0 auto;
}

.section {
    padding: 74px 0;
}

.section-heading {
    max-width: 720px;
    margin-bottom: 28px;
}

.section h2,
.control-band h2 {
    margin: 0;
    color: #fff;
    font-size: clamp(30px, 4vw, 48px);
    letter-spacing: 0;
    line-height: 1.12;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.feature-grid article {
    min-height: 178px;
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 8px;
    background: #15151E;
    padding: 22px;
    transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.feature-grid article:hover {
    transform: translateY(-4px);
    border-color: rgba(229, 9, 20, .52);
    background: #1F1F2C;
}

.feature-grid h3 {
    margin: 0 0 14px;
    color: #fff;
    font-size: 19px;
}

.feature-grid p,
.control-band p {
    margin: 0;
    color: #9CA0AE;
    line-height: 1.75;
}

.control-band {
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(320px, .7fr);
    gap: 36px;
    align-items: center;
    margin-bottom: 70px;
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 8px;
    background: #15151E;
    padding: 30px;
}

.control-band h2 {
    margin-bottom: 18px;
}

.metric-row {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
}

.metric-row span {
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 8px;
    padding: 16px;
    background: #1F1F2C;
    color: #9CA0AE;
}

.metric-row strong {
    display: block;
    color: #E50914;
    font-size: 23px;
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .7s ease, transform .7s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes floatDevice {
    0%, 100% {
        transform: translateY(0) rotate(.3deg);
    }
    50% {
        transform: translateY(-16px) rotate(-.5deg);
    }
}

@keyframes floatCard {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-12px);
    }
}

@keyframes scan {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(460%);
    }
}

.login-card,
.install-wrap {
    width: min(520px, calc(100vw - 32px));
    margin: 10vh auto 0;
}

.install-wrap {
    width: min(880px, calc(100vw - 32px));
    margin-top: 6vh;
}

.admin-main {
    width: min(1180px, calc(100vw - 32px));
    margin: 0 auto;
    padding: 84px 0 108px;
}

.layui-card {
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, .06);
}

.layui-card + .layui-card {
    margin-top: 16px;
}

.status-bar,
.error-panel {
    border-radius: 6px;
    margin-bottom: 16px;
    padding: 10px 14px;
}

.error-panel {
    border: 1px solid #ffb4a8;
    background: #fff2f0;
    color: #d93026;
}

.history-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin: 18px 0 10px;
}

.history-item {
    border: 1px solid #eee;
    border-radius: 6px;
    padding: 12px;
    margin-top: 10px;
    background: #fafafa;
}

.fixed-actions {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 900;
    display: flex;
    justify-content: center;
    gap: 12px;
    padding: 14px 16px;
    border-top: 1px solid #eee;
    background: rgba(255, 255, 255, .96);
    backdrop-filter: blur(8px);
}

.layui-layout-admin .layui-logo {
    font-weight: 700;
}

@media (max-width: 760px) {
    .site-nav {
        align-items: flex-start;
        gap: 14px;
        flex-direction: column;
    }

    .site-nav nav {
        width: 100%;
        justify-content: space-between;
        gap: 8px;
        font-size: 13px;
    }

    .nav-admin {
        padding: 7px 10px;
    }

    .hero {
        grid-template-columns: 1fr;
        gap: 24px;
        min-height: 0;
        padding-top: 26px;
    }

    .lead {
        font-size: 16px;
    }

    .hero-visual {
        min-height: 720px;
    }

    .device-frame {
        inset: 0 auto auto 50%;
        width: min(315px, 86vw);
        transform: translateX(-50%);
        animation: none;
    }

    .float-card {
        font-size: 13px;
    }

    .card-one {
        left: 0;
        top: 18%;
    }

    .card-two {
        right: 0;
        bottom: 18%;
    }

    .feature-grid,
    .control-band {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 42px 0;
    }

    .control-band {
        margin-bottom: 44px;
        padding: 22px;
    }

    .layui-layout-admin .layui-logo {
        display: none;
    }

    .layui-layout-right {
        right: 8px !important;
    }

    .layui-nav .layui-nav-item a {
        padding: 0 10px;
    }

    .fixed-actions {
        align-items: stretch;
        flex-direction: column;
    }
}