:root {
    --bg: #0f1724;
    /* deep navy */
    --card: #0b1220;
    --muted: #9aa4b2;
    --accent: #3b82f6;
    /* blue */
    --accent-2: #06b6d4;
    /* teal */
    --glass: rgba(255, 255, 255, 0.04);
    --radius: 14px;
    --max-width: 1100px;
    --shadow: 0 6px 20px rgba(2, 6, 23, 0.6);
    color-scheme: dark;
}

* {
    box-sizing: border-box
}

html,
body {
    height: 100%
}

body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
    background: linear-gradient(180deg, #071023 0%, #081324 60%);
    color: #e6eef8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.45;
}

/* Container */
.wrap {
    max-width: var(--max-width);
    margin: 40px auto;
    padding: 28px
}

header {
    display: flex;
    align-items: center;
    gap: 18px;
    justify-content: space-between
}

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

.logo {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow)
}

.logo svg {
    width: 30px;
    height: 30px
}

h1 {
    font-size: 20px;
    margin: 0
}

.tag {
    font-size: 13px;
    color: var(--muted)
}

nav {
    display: flex;
    gap: 14px
}

nav a {
    color: var(--muted);
    text-decoration: none;
    font-weight: 600;
    padding: 8px 12px;
    border-radius: 10px
}

nav a:hover {
    background: var(--glass);
    color: var(--accent)
}

/* Hero */
.hero {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 28px;
    align-items: center;
    margin-top: 28px
}

.hero-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent);
    padding: 28px;
    border-radius: var(--radius);
    box-shadow: var(--shadow)
}

.hero h2 {
    font-size: 28px;
    margin: 0 0 10px
}

.hero p {
    color: var(--muted);
    margin: 0 0 18px
}

.cta-row {
    display: flex;
    gap: 12px;
    align-items: center
}

.btn {
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    border: none;
    padding: 12px 18px;
    border-radius: 12px;
    color: #081024;
    font-weight: 700;
    cursor: pointer
}

.btn.ghost {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--muted)
}

.specs {
    display: flex;
    gap: 12px;
    margin-top: 16px
}

.spec {
    background: rgba(255, 255, 255, 0.02);
    padding: 10px;
    border-radius: 10px;
    font-size: 13px;
    color: var(--muted)
}

/* Product mockup */
.mockup {
    background: linear-gradient(135deg, #071428 0%, #072238 100%);
    border-radius: 14px;
    padding: 22px;
    display: flex;
    align-items: center;
    justify-content: center
}

.cabinet {
    width: 320px;
    height: 320px;
    border-radius: 12px;
    background: linear-gradient(180deg, #0b1220, #071025);
    position: relative;
    padding: 18px;
    box-shadow: inset 0 2px 6px rgba(255, 255, 255, 0.02)
}

.module {
    position: absolute;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
    border-radius: 8px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: flex-start
}

.module .title {
    font-weight: 700;
    font-size: 13px
}

.module .items {
    font-size: 12px;
    color: var(--muted)
}

.module.top {
    top: 22px;
    left: 24px;
    width: 120px
}

.module.mid {
    top: 130px;
    left: 24px;
    width: 260px
}

.module.right {
    top: 30px;
    right: 20px;
    width: 80px
}

/* Sections */
section {
    margin-top: 40px
}

.section-title {
    display: flex;
    align-items: center;
    gap: 12px
}

.section-title h3 {
    margin: 0
}

.grid {
    display: grid;
    gap: 18px
}

.product-features {
    grid-template-columns: repeat(3, 1fr);
    margin-top: 18px
}

.feature {
    background: var(--card);
    padding: 18px;
    border-radius: 12px
}

.feature h4 {
    margin: 0 0 8px
}

.feature p {
    margin: 0;
    color: var(--muted);
    font-size: 14px
}

/* Team */
.team-grid {
    display: flex;
    flex-wrap: wrap;
}

.member {
    background: var(--card);
    padding: 16px;
    border-radius: 12px;
    display: flex;
    gap: 12px;
    align-items: center;
    flex: 1 1 calc(50% - 12px);

}

.avatar {
    width: 56px;
    height: 56px;
    border-radius: 10px;
    background: linear-gradient(135deg, #13293a, #0d2938);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700
}

.member h5 {
    margin: 0;
    font-size: 15px
}

.member p {
    margin: 0;
    color: var(--muted);
    font-size: 13px
}

/* Video */
.video-wrap {
    position: relative;
    padding-top: 56.25%;
}

.video-wrap iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

/* Contact */
.contact-row {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 18px;
    align-items: start
}

.contact-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent);
    padding: 18px;
    border-radius: 12px
}

label {
    display: block;
    font-size: 13px;
    margin: 8px 0 6px
}

input,
textarea,
select {
    width: 100%;
    padding: 10px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.04);
    background: transparent;
    color: inherit
}

textarea {
    min-height: 100px
}

footer {
    margin: 32px 0;
    text-align: center;
    color: var(--muted);
    font-size: 13px
}

/* Modal */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(2, 6, 23, 0.6);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px
}

.modal {
    background: #071427;
    padding: 20px;
    border-radius: 12px;
    max-width: 520px;
    width: 100%
}

.modal h4 {
    margin: 0 0 8px
}

.modal .row {
    display: flex;
    gap: 8px;
    margin-top: 8px
}

.close {
    background: transparent;
    border: none;
    color: var(--muted);
    cursor: pointer
}

/* Responsive */
@media (max-width:980px) {
    .hero {
        grid-template-columns: 1fr
    }

    .contact-row {
        grid-template-columns: 1fr
    }

    .video-wrap iframe {
        height: 220px
    }

    .mockup {
        order: 2
    }
}

/* ===== Mobile Nav ===== */
.menu-toggle {
    display: none;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, .1);
    color: #fff;
    font-size: 20px;
    padding: 8px 12px;
    border-radius: 10px;
    cursor: pointer;
}

/* 手機版 header */
@media (max-width: 768px) {
    header {
        flex-wrap: wrap;
        gap: 12px;
    }

    .menu-toggle {
        display: block;
    }

    nav {
        width: 100%;
        display: none;
        flex-direction: column;
        gap: 6px;
        background: var(--card);
        padding: 12px;
        border-radius: 12px;
    }

    nav.show {
        display: flex;
    }

    nav a,
    nav .btn {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .hero h2 {
        font-size: 22px;
    }

    .cta-row {
        flex-direction: column;
        align-items: stretch;
    }

    .specs {
        flex-direction: column;
    }

    .mockup {
        padding: 14px;
    }

    .cabinet {
        transform: scale(0.85);
    }
}

@media (max-width: 768px) {
    .product-features {
        grid-template-columns: 1fr;
    }
}


@media (max-width: 600px) {
    .member {
        flex: 1 1 100%;
    }
}

@media (max-width: 480px) {
    .wrap {
        padding: 18px;
        margin: 20px auto;
    }

    h1 {
        font-size: 18px;
    }

    .tag {
        font-size: 12px;
    }

    section {
        margin-top: 28px;
    }
}