:root {
    --bg1: #f7f8ff;
    --bg2: #eef7ff;
    --card: #ffffff;
    --text: #0f172a;
    --muted: #64748b;
    --line: #e2e8f0;
    --primary: #2563eb;
    --primary2: #1d4ed8;
    --shadow: 0 16px 50px rgba(15, 23, 42, 0.10);
    --radius: 18px;
    --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

* {
    box-sizing: border-box
}

body {
    margin: 0;
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
    color: var(--text);
    background: linear-gradient(180deg, var(--bg1), var(--bg2));
    min-height: 100vh;
}

.bg {
    position: fixed;
    inset: 0;
    background:
        radial-gradient(900px 600px at 20% 10%, rgba(37, 99, 235, .12), transparent 55%),
        radial-gradient(800px 500px at 85% 25%, rgba(14, 165, 233, .12), transparent 55%),
        radial-gradient(900px 600px at 40% 95%, rgba(34, 197, 94, .10), transparent 55%);
    pointer-events: none;
}

.shell {
    max-width: 860px;
    margin: 0 auto;
    padding: 32px 18px 40px;
    position: relative;
}

.top {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 18px;
}

h1 {
    margin: 0;
    font-size: 28px;
    letter-spacing: -.02em
}

.sub {
    margin: 6px 0 0;
    color: var(--muted)
}

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 18px;
}

.row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.label {
    font-size: 12px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: .06em
}

.value {
    font-size: 16px;
    margin-top: 4px
}

.muted {
    color: var(--muted)
}

.mono {
    font-family: var(--mono)
}

.right {
    margin-left: auto
}

.divider {
    height: 1px;
    background: var(--line);
    margin: 14px 0;
}

.actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap
}

.btn {
    appearance: none;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 14px;
    padding: 10px 14px;
    font-weight: 600;
    cursor: pointer;
    transition: transform .04s ease, box-shadow .15s ease, border-color .15s ease;
}

.btn:active {
    transform: translateY(1px)
}

.btn:hover {
    border-color: #cbd5e1
}

.btn:disabled {
    opacity: .55;
    cursor: not-allowed
}

.btn.primary {
    background: linear-gradient(180deg, var(--primary), var(--primary2));
    color: #fff;
    border-color: transparent;
}

.btn.ghost {
    background: transparent
}

.hint {
    margin-top: 6px;
    color: var(--muted);
    font-size: 13px
}

.toast {
    margin-top: 14px;
    background: #0f172a;
    color: #fff;
    padding: 10px 12px;
    border-radius: 12px;
    font-size: 13px;
}

.hidden {
    display: none
}

.foot {
    margin-top: 14px;
    font-size: 12px;
    color: var(--muted);
}