:root {
    --qrcode-bg: #f4f6fb;
    --qrcode-card: rgba(255, 255, 255, 0.86);
    --qrcode-border: rgba(24, 44, 88, 0.08);
    --qrcode-text: #152038;
    --qrcode-muted: #63708a;
    --qrcode-accent: #0f6dff;
    --qrcode-accent-soft: rgba(15, 109, 255, 0.12);
    --qrcode-success: #0f9d58;
    --qrcode-shadow: 0 20px 60px rgba(35, 49, 86, 0.12);
}

* {
    box-sizing: border-box;
}

body.qrcode-body {
    margin: 0;
    min-height: 100vh;
    color: var(--qrcode-text);
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background:
        radial-gradient(circle at top left, rgba(15, 109, 255, 0.12), transparent 28%),
        radial-gradient(circle at bottom right, rgba(255, 183, 0, 0.14), transparent 24%),
        var(--qrcode-bg);
}

.qrcode-header {
    position: sticky;
    top: 0;
    z-index: 5;
    backdrop-filter: blur(16px);
    background: rgba(244, 246, 251, 0.82);
    border-bottom: 1px solid rgba(21, 32, 56, 0.06);
}

.qrcode-header-inner,
.qrcode-main {
    width: min(1180px, calc(100vw - 40px));
    margin: 0 auto;
}

.qrcode-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 0;
}

.qrcode-brand,
.qrcode-link {
    text-decoration: none;
    color: var(--qrcode-text);
}

.qrcode-brand {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.qrcode-header-actions {
    display: flex;
    gap: 12px;
}

.qrcode-link {
    padding: 10px 16px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid var(--qrcode-border);
}

.qrcode-link.secondary {
    color: var(--qrcode-muted);
}

.qrcode-main {
    padding: 36px 0 60px;
}

.qrcode-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(300px, 0.8fr);
    gap: 22px;
    margin-bottom: 22px;
}

.qrcode-hero-copy h1,
.qrcode-panel-head h2 {
    margin: 0;
}

.qrcode-eyebrow {
    display: inline-flex;
    align-items: center;
    padding: 7px 12px;
    border-radius: 999px;
    background: var(--qrcode-accent-soft);
    color: var(--qrcode-accent);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.qrcode-hero-copy h1 {
    margin-top: 14px;
    font-size: clamp(32px, 5vw, 50px);
    line-height: 1.02;
}

.qrcode-hero-copy p {
    max-width: 720px;
    color: var(--qrcode-muted);
    font-size: 16px;
    line-height: 1.7;
}

.qrcode-hero-card,
.qrcode-panel,
.qrcode-stat-card {
    border: 1px solid var(--qrcode-border);
    background: var(--qrcode-card);
    box-shadow: var(--qrcode-shadow);
}

.qrcode-hero-card {
    height: 100%;
    padding: 26px;
    border-radius: 28px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.qrcode-hero-card-label {
    color: var(--qrcode-muted);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.qrcode-hero-card-value {
    margin-top: 12px;
    font-size: 30px;
    font-weight: 800;
}

.qrcode-hero-card-sub {
    margin-top: 8px;
    color: var(--qrcode-muted);
}

.qrcode-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.8fr);
    gap: 22px;
    margin-bottom: 22px;
}

.qrcode-panel {
    border-radius: 26px;
    padding: 24px;
}

.qrcode-panel-head p {
    margin: 8px 0 0;
    color: var(--qrcode-muted);
}

.qrcode-form {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.qrcode-grid-two {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.qrcode-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-weight: 600;
}

.qrcode-field span {
    font-size: 14px;
}

.qrcode-field input,
.qrcode-field textarea {
    width: 100%;
    border: 1px solid rgba(21, 32, 56, 0.12);
    border-radius: 16px;
    padding: 13px 14px;
    background: rgba(255, 255, 255, 0.92);
    color: var(--qrcode-text);
    font: inherit;
}

.qrcode-field input:focus,
.qrcode-field textarea:focus {
    outline: none;
    border-color: rgba(15, 109, 255, 0.45);
    box-shadow: 0 0 0 4px rgba(15, 109, 255, 0.12);
}

.qrcode-form-hint {
    color: var(--qrcode-muted);
    line-height: 1.6;
}

.qrcode-form-actions {
    display: flex;
    justify-content: flex-start;
}

.qrcode-button {
    appearance: none;
    border: 0;
    border-radius: 999px;
    padding: 12px 20px;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}

.qrcode-button.primary {
    background: linear-gradient(135deg, #0f6dff, #5f8cff);
    color: #fff;
}

.qrcode-button.secondary {
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid var(--qrcode-border);
    color: var(--qrcode-text);
}

.qrcode-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.qrcode-stats {
    display: grid;
    gap: 12px;
    margin-top: 18px;
}

.qrcode-stat-card {
    border-radius: 18px;
    padding: 16px 18px;
}

.qrcode-stat-label {
    color: var(--qrcode-muted);
    font-size: 13px;
}

.qrcode-stat-value {
    margin-top: 8px;
    font-size: 28px;
    font-weight: 800;
}

.qrcode-thresholds {
    margin-top: 18px;
}

.qrcode-thresholds-title {
    font-weight: 700;
}

.qrcode-threshold-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 12px;
}

.qrcode-threshold-chip {
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(15, 109, 255, 0.08);
    color: var(--qrcode-accent);
    font-size: 14px;
    font-weight: 700;
}

.qrcode-status-box {
    margin-top: 18px;
    padding: 16px;
    border-radius: 16px;
    background: rgba(15, 109, 255, 0.08);
    color: var(--qrcode-text);
    line-height: 1.6;
}

.qrcode-status-box.success {
    background: rgba(15, 157, 88, 0.1);
}

.qrcode-status-box.error {
    background: rgba(224, 62, 62, 0.12);
}

.qrcode-list-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
}

.qrcode-list {
    margin-top: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 18px;
}

.qrcode-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px;
    border-radius: 18px;
    border: 1px solid var(--qrcode-border);
    background: rgba(255, 255, 255, 0.78);
}

.qrcode-card img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 16px;
    background: #fff;
    border: 1px solid rgba(21, 32, 56, 0.08);
}

.qrcode-card-title {
    font-size: 18px;
    font-weight: 800;
    line-height: 1.3;
}

.qrcode-card-meta,
.qrcode-card-notes,
.qrcode-card-footer {
    color: var(--qrcode-muted);
    line-height: 1.6;
}

.qrcode-card-footer {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    font-size: 13px;
}

.qrcode-empty {
    padding: 36px 18px;
    text-align: center;
    color: var(--qrcode-muted);
    border-radius: 20px;
    border: 1px dashed rgba(21, 32, 56, 0.16);
    background: rgba(255, 255, 255, 0.54);
    grid-column: 1 / -1;
}

@media (max-width: 920px) {
    .qrcode-hero,
    .qrcode-layout {
        grid-template-columns: 1fr;
    }

    .qrcode-list-head {
        flex-direction: column;
    }
}

@media (max-width: 640px) {
    .qrcode-header-inner,
    .qrcode-main {
        width: min(100vw - 24px, 1180px);
    }

    .qrcode-grid-two {
        grid-template-columns: 1fr;
    }

    .qrcode-header-inner {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
    }

    .qrcode-header-actions {
        width: 100%;
    }
}