* {
    box-sizing: border-box;
}

body {
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial;
    margin: 0;
    background: #0b1220;
    color: #e8eefc;
}

.wrap {
    max-width: 880px;
    margin: 0 auto;
    padding: 28px 16px 48px;
}

.header h1 {
    margin: 0 0 8px;
    font-size: 32px;
}

.sub {
    margin: 0 0 18px;
    opacity: .85;
}

.card {
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 14px;
    padding: 16px;
}

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

input[type=file] {
    flex: 1 1 320px;
}

button {
    padding: 10px 14px;
    border: 0;
    border-radius: 10px;
    background: #4f7cff;
    color: #fff;
    cursor: pointer;
    font-weight: 700;
}

button:disabled {
    opacity: .5;
    cursor: not-allowed;
}

.progress {
    height: 10px;
    background: rgba(255, 255, 255, .12);
    border-radius: 999px;
    overflow: hidden;
    margin: 12px 0;
}

.bar {
    height: 100%;
    width: 0%;
    background: #4f7cff;
    transition: width .15s ease;
}

.log {
    background: rgba(0, 0, 0, .35);
    border: 1px solid rgba(255, 255, 255, .10);
    border-radius: 10px;
    padding: 10px;
    min-height: 72px;
    white-space: pre-wrap;
}

.result {
    margin-top: 12px;
    display: grid;
    gap: 10px;
}

.hidden {
    display: none;
}

.dl {
    display: inline-block;
    padding: 10px 14px;
    background: #22c55e;
    border-radius: 10px;
    color: #08120a;
    text-decoration: none;
    font-weight: 800;
    width: fit-content;
}

.note {
    opacity: .85;
    margin-top: 10px;
}

.faq {
    margin-top: 18px;
}

details {
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .10);
    border-radius: 12px;
    padding: 10px 12px;
    margin: 10px 0;
}

summary {
    cursor: pointer;
    font-weight: 700;
}

.drop {
    border: 1px dashed rgba(255, 255, 255, .25);
    border-radius: 14px;
    padding: 14px;
}

.drop.dragover {
    border-color: #4f7cff;
    background: rgba(79, 124, 255, .10);
}

.dropHint {
    margin: 10px 0 0;
    opacity: .8;
}

select {
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, .15);
    background: rgba(255, 255, 255, .06);
    color: #e8eefc;
}

option {
    color: #000;
}

.guide,
.faq2,
.trust {
    margin-top: 18px;
}

.muted {
    opacity: .85;
}

.grid2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

@media (min-width: 820px) {
    .grid2 {
        grid-template-columns: 1fr 1fr;
    }
}

.panel {
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .10);
    border-radius: 14px;
    padding: 14px;
}

.panel h3 {
    margin-top: 0;
}

.panel ol {
    margin: 10px 0 0;
    padding-left: 18px;
}

.panel li {
    margin: 8px 0;
    line-height: 1.4;
}

.tip {
    margin: 10px 0 0;
    opacity: .85;
    font-size: 14px;
}

.faq2 details {
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .10);
    border-radius: 12px;
    padding: 10px 12px;
    margin: 10px 0;
}

.faq2 summary {
    cursor: pointer;
    font-weight: 800;
}

.trust ul {
    margin: 10px 0 0;
    padding-left: 18px;
}

.trust li {
    margin: 8px 0;
    opacity: .9;
}

.ad-slot {
    margin: 18px 0;
    padding: 12px;
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 14px;
    background: rgba(255, 255, 255, .03);
}

.footer {
    opacity: .8;
    font-size: .95rem;
    text-align: center;
    margin: 26px 0 18px;
}

.footer a {
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}