* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

button {
    appearance: none;
    -webkit-appearance: none;
    font: inherit;
}

a:focus,
button:focus {
    outline: none;
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid rgba(111, 196, 255, 0.72);
    outline-offset: 3px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: radial-gradient(ellipse at center, rgba(60, 200, 255, 0.14) 0%, transparent 70%), radial-gradient(circle at top right, rgba(99, 184, 255, 0.1), transparent 28%), #0a1628;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.logo,
.brand-name,
.tagline,
.status-line,
.install-label,
.track-switch,
.track-chip,
.copy-button,
.secondary-link,
.site-switch,
.site-switch-link {
    user-select: none;
    -webkit-user-select: none;
}

.container {
    text-align: center;
    padding: 40px 20px;
}

.logo-wrapper {
    margin-bottom: 36px;
}

.logo {
    width: 188px;
    height: 188px;
    filter: drop-shadow(0 0 34px rgba(60, 200, 255, 0.2));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.brand-name {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    letter-spacing: -0.08em;
    color: #f6fbff;
    margin-bottom: 14px;
}

.tagline {
    font-size: clamp(1rem, 2.8vw, 1.4rem);
    font-weight: 600;
    letter-spacing: 0.12em;
    color: #edf4fb;
    margin-bottom: 12px;
    text-transform: uppercase;
}

.status-line {
    font-size: clamp(0.95rem, 2.2vw, 1.08rem);
    color: rgba(237, 244, 251, 0.72);
    letter-spacing: 0.03em;
    margin-bottom: 24px;
}

.secondary-status {
    margin-top: 16px;
    margin-bottom: 0;
    font-size: clamp(0.82rem, 1.9vw, 0.96rem);
    color: rgba(237, 244, 251, 0.54);
}

.actions {
    width: min(500px, calc(100vw - 48px));
    margin: 0 auto;
}

.track-switch {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 12px;
    padding: 5px;
    border-radius: 999px;
    background: rgba(8, 16, 29, 0.4);
    border: 1px solid rgba(99, 184, 255, 0.14);
}

.track-chip {
    border: 0;
    min-height: 34px;
    padding: 0 14px;
    border-radius: 999px;
    background: transparent;
    color: rgba(237, 244, 251, 0.64);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 160ms ease, color 160ms ease;
}

.track-chip.is-active {
    background: rgba(237, 244, 251, 0.94);
    color: #0a1628;
}

.install-card {
    width: 100%;
    padding: 14px 14px 12px;
    border: 1px solid rgba(60, 200, 255, 0.16);
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(18, 32, 51, 0.94) 0%, rgba(12, 24, 40, 0.88) 100%);
    box-shadow: 0 16px 38px rgba(0, 0, 0, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.install-label {
    margin-bottom: 8px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(237, 244, 251, 0.58);
}

.install-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.install-row code {
    flex: 1;
    min-width: 0;
    padding: 11px 13px;
    border: 1px solid rgba(60, 200, 255, 0.18);
    border-radius: 13px;
    background: rgba(6, 14, 25, 0.84);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
    font-family: 'SFMono-Regular', 'SF Mono', 'JetBrains Mono', Menlo, monospace;
    font-size: 0.92rem;
    color: #dff4ff;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.copy-button {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    min-width: 40px;
    padding: 0;
    border: 1px solid rgba(99, 184, 255, 0.22);
    border-radius: 12px;
    background: rgba(60, 200, 255, 0.08);
    color: #dff4ff;
    white-space: nowrap;
    cursor: pointer;
    transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease;
}

.copy-button-text {
    display: none;
    line-height: 1;
    font-size: 0.73rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;
}

.copy-button svg {
    width: 15px;
    height: 15px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.copy-icon-success {
    display: none;
    stroke-width: 2.1;
}

.copy-button.is-copied {
    border-color: rgba(123, 224, 182, 0.34);
    background: rgba(123, 224, 182, 0.12);
    color: #bff5dd;
}

.copy-button.is-copied .copy-icon-default {
    display: none;
}

.copy-button.is-copied .copy-icon-success {
    display: block;
}

.copy-button:active {
    transform: translateY(0);
}

.link-group {
    display: flex;
    justify-content: center;
    margin-top: 12px;
}

.secondary-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    min-height: 42px;
    padding: 0 18px;
    border-radius: 999px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-size: 0.75rem;
    font-weight: 600;
    color: rgba(223, 244, 255, 0.96);
    background: linear-gradient(180deg, rgba(60, 200, 255, 0.11) 0%, rgba(60, 200, 255, 0.06) 100%);
    border: 1px solid rgba(99, 184, 255, 0.24);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
    text-decoration: none;
    transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.secondary-link svg {
    width: 15px;
    height: 15px;
    fill: currentColor;
    opacity: 0.92;
}

.secondary-link span {
    white-space: nowrap;
}

.site-switch {
    position: fixed;
    top: 20px;
    right: 20px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 6px 8px;
    border-radius: 999px;
    background: rgba(8, 16, 29, 0.42);
    border: 1px solid rgba(99, 184, 255, 0.14);
    backdrop-filter: blur(12px);
}

.site-switch-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 32px;
    min-width: 0;
    padding: 0 12px;
    border-radius: 999px;
    color: rgba(237, 244, 251, 0.68);
    text-decoration: none;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 160ms ease, background 160ms ease;
}

.site-switch-link.is-active {
    color: #0a1628;
    background: rgba(237, 244, 251, 0.94);
}

@media (hover: hover) and (pointer: fine) {
    .copy-button:hover {
        transform: translateY(-1px);
        border-color: rgba(99, 184, 255, 0.34);
        background: rgba(60, 200, 255, 0.13);
    }

    .secondary-link:hover {
        transform: translateY(-1px);
        border-color: rgba(99, 184, 255, 0.38);
        background: linear-gradient(180deg, rgba(60, 200, 255, 0.15) 0%, rgba(60, 200, 255, 0.08) 100%);
    }

    .site-switch-link:hover {
        color: rgba(237, 244, 251, 0.96);
    }

    .site-switch-link.is-active:hover {
        color: #0a1628;
        background: rgba(237, 244, 251, 0.98);
    }
}

@media (max-width: 640px) {
    body {
        justify-content: flex-start;
        padding-top: calc(env(safe-area-inset-top, 0px) + 96px);
        padding-bottom: 28px;
        overflow: auto;
    }

    .container {
        width: 100%;
        padding-top: 30px;
    }

    .site-switch {
        left: 50%;
        right: auto;
        top: calc(env(safe-area-inset-top, 0px) + 8px);
        transform: translateX(-50%);
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 4px;
        width: min(248px, calc(100vw - 28px));
        padding: 4px;
    }

    .site-switch-link {
        min-height: 28px;
        padding: 0 7px;
        font-size: 0.64rem;
        letter-spacing: 0.04em;
    }

    .track-switch {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 6px;
    }

    .track-chip {
        min-width: 0;
        padding: 0 10px;
        justify-content: center;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        letter-spacing: 0.06em;
    }

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

    .copy-button {
        width: 100%;
        gap: 8px;
        padding: 0 14px;
        justify-content: center;
    }

    .copy-button-text {
        display: inline;
    }

    .secondary-link {
        width: 100%;
    }
}

@media (max-width: 480px) {
    body {
        padding-top: calc(env(safe-area-inset-top, 0px) + 104px);
    }

    .container {
        padding-top: 34px;
    }

    .logo {
        width: 146px;
        height: 146px;
    }

    .site-switch {
        width: min(232px, calc(100vw - 24px));
    }

    .install-card {
        padding: 13px;
    }

    .secondary-link {
        width: 100%;
    }
}