:root {
    --cz-blue: #0875c9;
    --cz-blue-light: #48a9e7;
    --cz-deep: #071d31;
    --cz-navy: #0b2942;
    --cz-ink: #122334;
    --cz-muted: #637384;
    --cz-gold: #c9a35f;
    --cz-pale: #f3f7fa;
    --cz-line: #d9e3ea;
}

* { box-sizing: border-box; }

body.czxqy-tools {
    margin: 0;
    min-height: 100vh;
    color: var(--cz-ink);
    background:
        linear-gradient(rgba(7, 29, 49, .028) 1px, transparent 1px),
        linear-gradient(90deg, rgba(7, 29, 49, .028) 1px, transparent 1px),
        var(--cz-pale);
    background-size: 64px 64px;
    font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    letter-spacing: 0;
}

.czxqy-topbar {
    min-height: 76px;
    padding: 10px max(4vw, 24px);
    display: flex;
    align-items: center;
    gap: 26px;
    color: #fff;
    background: var(--cz-deep);
    border-bottom: 3px solid var(--cz-blue);
    box-shadow: 0 8px 28px rgba(7, 29, 49, .18);
}

.czxqy-brand {
    width: 220px;
    height: 52px;
    display: flex;
    align-items: center;
}

.czxqy-brand img {
    width: 100%;
    height: auto;
    display: block;
    filter: brightness(0) invert(1);
}

.czxqy-topbar-meta {
    min-width: 0;
    padding-left: 24px;
    border-left: 1px solid rgba(255, 255, 255, .18);
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.czxqy-topbar-meta span {
    color: #8fb5cf;
    font-size: 11px;
}

.czxqy-topbar-meta strong { font-size: 15px; }

.czxqy-home-link {
    margin-left: auto;
    padding: 10px 14px;
    color: #d9e9f3;
    border: 1px solid rgba(255, 255, 255, .24);
    border-radius: 4px;
    text-decoration: none;
    font-size: 13px;
}

.czxqy-home-link:hover { border-color: #fff; color: #fff; }

body.czxqy-tools > .container {
    width: min(1180px, calc(100% - 40px));
    margin: 36px auto 60px;
    padding: 0;
}

body.czxqy-tools > .container > .header {
    padding: 30px 32px;
    text-align: left;
    color: #fff;
    background: var(--cz-navy);
    border: 0;
    border-left: 5px solid var(--cz-gold);
    border-radius: 6px 6px 0 0;
}

body.czxqy-tools > .container > .header .logo {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 13px;
}

body.czxqy-tools > .container > .header .logo h1 {
    margin: 0;
    color: #fff;
    font-size: 28px;
}

body.czxqy-tools > .container > .header .logo > i { color: #66b7ea; }

body.czxqy-tools > .container > .header .back-link {
    order: 10;
    margin-left: auto;
    color: #bcd3e2;
    font-size: 13px;
}

body.czxqy-tools > .container > .header .subtitle {
    margin: 9px 0 0;
    color: #a8c2d4;
}

body.czxqy-tools .free-badge {
    display: inline-flex;
    margin-top: 14px;
    color: #fff;
    background: rgba(8, 117, 201, .35);
    border: 1px solid rgba(91, 182, 245, .5);
}

body.czxqy-tools .main-content {
    padding: 28px 30px 36px;
    background: #fff;
    border: 1px solid var(--cz-line);
    border-top: 0;
    border-radius: 0 0 6px 6px;
    box-shadow: 0 20px 55px rgba(7, 29, 49, .09);
}

body.czxqy-tools .tool-section,
body.czxqy-tools .card,
body.czxqy-tools .progress-container,
body.czxqy-tools .result-container,
body.czxqy-tools .progress,
body.czxqy-tools .result {
    border-radius: 6px;
    box-shadow: none;
    border: 1px solid var(--cz-line);
}

body.czxqy-tools .tool-section { padding: 24px; }

body.czxqy-tools .section-title {
    color: var(--cz-deep);
    font-size: 19px;
}

body.czxqy-tools .section-title i { color: var(--cz-blue); }

body.czxqy-tools .upload-area {
    border-width: 2px;
    border-color: #79b9e4;
    border-radius: 6px;
    background: #f7fbfe;
}

body.czxqy-tools .upload-area:hover,
body.czxqy-tools .upload-area.dragover {
    border-color: var(--cz-blue);
    background: #edf7fd;
}

body.czxqy-tools .upload-area i { color: var(--cz-blue) !important; }

body.czxqy-tools button,
body.czxqy-tools .btn-primary,
body.czxqy-tools .extract-btn,
body.czxqy-tools .action-btn,
body.czxqy-tools .download-btn,
body.czxqy-tools .download-links a {
    border-radius: 5px;
    background: var(--cz-blue);
    box-shadow: none;
    transform: none;
}

body.czxqy-tools button:hover,
body.czxqy-tools .btn-primary:hover,
body.czxqy-tools .extract-btn:hover,
body.czxqy-tools .action-btn:hover,
body.czxqy-tools .download-btn:hover,
body.czxqy-tools .download-links a:hover {
    background: #0668b2;
    box-shadow: 0 8px 18px rgba(8, 117, 201, .18);
    transform: none;
}

body.czxqy-tools button:disabled,
body.czxqy-tools .btn-primary:disabled,
body.czxqy-tools .extract-btn:disabled,
body.czxqy-tools .action-btn:disabled {
    background: #aebbc5;
    box-shadow: none;
}

body.czxqy-tools .progress-fill,
body.czxqy-tools .progress-bar .fill { background: var(--cz-blue); }

body.czxqy-tools .selected-file,
body.czxqy-tools .file-item,
body.czxqy-tools .results-table { border-radius: 5px; }

body.czxqy-tools .results-table th {
    color: var(--cz-deep);
    background: #eaf2f7;
}

body.czxqy-tools .results-table td { color: var(--cz-muted); }

body.czxqy-tools .notice,
body.czxqy-tools .template-download {
    border-radius: 5px;
    border: 1px solid #e6d2aa;
    background: #fffaf0;
}

body.czxqy-tools .quality-setting select {
    border-color: #b9c8d3;
    border-radius: 4px;
}

body.czxqy-tools .footer,
body.czxqy-tools .seo-section {
    margin-top: 26px;
    border: 1px solid var(--cz-line);
    border-radius: 6px;
    background: #fff;
}

body.czxqy-tools .footer { color: var(--cz-muted); }

body.czxqy-tools .contact-card {
    border-radius: 6px;
    border-color: #b8d7ea;
    box-shadow: 0 10px 30px rgba(7, 29, 49, .12);
}

body.czxqy-tools .feedback-trigger { background: var(--cz-blue); }

.czxqy-hub {
    width: min(1180px, calc(100% - 40px));
    margin: 58px auto 76px;
}

.czxqy-hub-intro {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(270px, .55fr);
    gap: 26px;
    align-items: stretch;
    margin-bottom: 28px;
}

.czxqy-hub-intro > div:first-child {
    padding: 42px;
    color: #fff;
    background: var(--cz-navy);
    border-left: 5px solid var(--cz-gold);
    border-radius: 6px;
}

.czxqy-kicker {
    color: #75bce8;
    font-size: 11px;
}

.czxqy-hub h1 {
    margin: 16px 0 12px;
    color: #fff;
    font-size: 38px;
    line-height: 1.25;
}

.czxqy-hub-intro p { margin: 0; color: #acc5d6; line-height: 1.8; }

.czxqy-status-panel {
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: #fff;
    border: 1px solid var(--cz-line);
    border-radius: 6px;
}

.czxqy-status-panel > span { color: var(--cz-muted); font-size: 12px; }
.czxqy-status-panel strong { margin: 13px 0 9px; font-size: 21px; }
.czxqy-status-panel strong i { width: 9px; height: 9px; display: inline-block; margin-right: 8px; background: #1aaa68; border-radius: 50%; }
.czxqy-status-panel small { color: #8796a2; line-height: 1.6; }

.czxqy-tool-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    background: #fff;
    border: 1px solid var(--cz-line);
    border-radius: 6px;
    overflow: hidden;
}

.czxqy-tool-card {
    min-height: 330px;
    padding: 34px 30px;
    position: relative;
    color: var(--cz-ink);
    text-decoration: none;
    border-right: 1px solid var(--cz-line);
    transition: background .2s ease, color .2s ease;
}

.czxqy-tool-card:last-child { border-right: 0; }
.czxqy-tool-card:hover { color: #fff; background: var(--cz-blue); }
.czxqy-card-no { position: absolute; right: 24px; top: 22px; color: #a9b7c1; font-size: 12px; }
.czxqy-card-icon { width: 54px; height: 54px; display: grid; place-items: center; color: var(--cz-blue); border: 1px solid #b7d7eb; font-size: 21px; }
.czxqy-tool-card h2 { margin: 36px 0 16px; font-size: 24px; }
.czxqy-tool-card p { min-height: 78px; color: var(--cz-muted); line-height: 1.8; font-size: 14px; }
.czxqy-tool-card b { display: flex; justify-content: space-between; margin-top: 28px; color: var(--cz-blue); font-size: 13px; }
.czxqy-tool-card:hover .czxqy-card-no,
.czxqy-tool-card:hover p { color: #d7eaf6; }
.czxqy-tool-card:hover .czxqy-card-icon { color: #fff; border-color: rgba(255,255,255,.45); }
.czxqy-tool-card:hover b { color: #fff; }

.czxqy-site-footer {
    padding: 28px 24px;
    display: flex;
    justify-content: center;
    gap: 20px;
    color: #99afbe;
    background: #061522;
    font-size: 12px;
}

.czxqy-site-footer span { color: #fff; font-weight: 700; }
.czxqy-site-footer p { margin: 0; }

@media (max-width: 760px) {
    .czxqy-topbar { min-height: 66px; padding: 8px 16px; gap: 12px; }
    .czxqy-brand { width: 170px; height: 44px; }
    .czxqy-topbar-meta { display: none; }
    .czxqy-home-link { padding: 9px 10px; font-size: 12px; }
    body.czxqy-tools > .container,
    .czxqy-hub {
        width: calc(100% - 22px);
        max-width: 1180px;
        margin: 18px auto 36px;
    }
    body.czxqy-tools > .container {
        min-height: auto;
        padding: 0;
    }
    body.czxqy-tools > .container > .header { padding: 22px 18px; }
    body.czxqy-tools > .container > .header .logo { align-items: flex-start; flex-wrap: wrap; }
    body.czxqy-tools > .container > .header .logo h1 { width: calc(100% - 48px); font-size: 22px; }
    body.czxqy-tools > .container > .header .back-link { order: 0; width: 100%; margin: 0 0 8px; }
    body.czxqy-tools .main-content { padding: 16px; }
    body.czxqy-tools .tool-section { padding: 16px; }
    body.czxqy-tools .upload-area { padding: 30px 14px; }
    body.czxqy-tools .result-stats { grid-template-columns: 1fr; gap: 10px; }
    body.czxqy-tools .results-table { display: block; overflow-x: auto; }
    body.czxqy-tools .contact-card { display: none; }
    .czxqy-hub-intro { grid-template-columns: 1fr; }
    .czxqy-hub-intro > div:first-child { padding: 28px 22px; }
    .czxqy-hub h1 { font-size: 29px; }
    .czxqy-tool-grid { grid-template-columns: 1fr; }
    .czxqy-tool-card { min-height: 280px; border-right: 0; border-bottom: 1px solid var(--cz-line); }
    .czxqy-tool-card:last-child { border-bottom: 0; }
    .czxqy-site-footer { align-items: center; flex-direction: column; gap: 6px; text-align: center; }
}