:root {
    --mn-navy: #071d2b;
    --mn-purple: #1c0950;
    --mn-red: #f52b3b;
    --mn-teal: #12bfa0;
    --mn-blue: #1386a8;
    --mn-violet: #7059c8;
    --mn-orange: #f47b22;
    --mn-bg: #f3f5f9;
    --mn-surface: #ffffff;
    --mn-muted: #6d7182;
    --mn-border: rgba(28, 9, 80, 0.14);
    --mn-shadow: 0 14px 38px rgba(7, 29, 43, 0.10);
}

* { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    background: var(--mn-bg);
}

body {
    margin: 0 !important;
    padding: 0 !important;
    min-height: 100vh;
    display: block !important;
    background:
        radial-gradient(circle at 8% 8%, rgba(18, 191, 160, 0.08), transparent 24rem),
        radial-gradient(circle at 92% 18%, rgba(112, 89, 200, 0.08), transparent 26rem),
        var(--mn-bg) !important;
    color: var(--mn-purple) !important;
    font-family: Inter, "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", sans-serif !important;
    line-height: 1.65;
}

body > :not(.mn-brandbar):not(.mn-footer):not(script) {
    position: relative;
}

.mn-brandbar {
    position: sticky;
    top: 0;
    z-index: 9999;
    color: #fff;
    background: var(--mn-navy);
    box-shadow: 0 8px 24px rgba(7, 29, 43, 0.22);
}

.mn-spectrum {
    height: 6px;
    background: linear-gradient(90deg,
        var(--mn-red) 0 18%,
        var(--mn-teal) 18% 38%,
        var(--mn-violet) 38% 58%,
        var(--mn-blue) 58% 79%,
        var(--mn-orange) 79% 100%);
}

.mn-brandbar__inner {
    max-width: 1240px;
    min-height: 72px;
    margin: 0 auto;
    padding: 12px 24px;
    display: flex;
    align-items: center;
    gap: 18px;
}

.mn-wordmark {
    flex: 0 0 auto;
    color: #fff !important;
    text-decoration: none;
    font-size: 1.18rem;
    line-height: 1;
    font-weight: 800;
    letter-spacing: 2.4px;
}

.mn-system-name {
    flex: 1 1 auto;
    padding-left: 18px;
    border-left: 1px solid rgba(255, 255, 255, 0.28);
    color: rgba(255, 255, 255, 0.78);
    font-size: 0.9rem;
    letter-spacing: 0.08em;
}

.mn-quicknav {
    display: flex;
    gap: 6px;
    align-items: center;
}

.mn-quicknav a {
    padding: 8px 11px;
    border-radius: 7px;
    color: rgba(255, 255, 255, 0.84) !important;
    text-decoration: none;
    font-size: 0.86rem;
    font-weight: 700;
    white-space: nowrap;
    transition: background-color .2s ease, color .2s ease;
}

.mn-quicknav a:hover,
.mn-quicknav a:focus-visible {
    color: #fff !important;
    background: var(--mn-red);
    outline: none;
}

.mn-footer {
    max-width: 1240px;
    margin: 42px auto 0;
    padding: 24px;
    border-top: 1px solid var(--mn-border);
    color: var(--mn-muted);
    text-align: center;
    font-size: 0.84rem;
    letter-spacing: 0.04em;
}

body > .container,
body > .portal-container,
body > .main-container,
body > .sop-container {
    width: min(1120px, calc(100% - 32px)) !important;
    margin: 34px auto !important;
    padding: clamp(20px, 3vw, 38px) !important;
    background: rgba(255, 255, 255, 0.96) !important;
    color: var(--mn-purple) !important;
    border: 1px solid var(--mn-border) !important;
    border-top: 5px solid var(--mn-red) !important;
    border-radius: 16px !important;
    box-shadow: var(--mn-shadow) !important;
}

body > .menu-grid {
    width: min(1200px, calc(100% - 32px)) !important;
    max-width: 1200px !important;
    margin: 34px auto 0 !important;
}

h1, h2, h3, h4,
.model-text, .sop-title, .video-title, .current-title {
    font-family: Inter, "PingFang TC", "Microsoft JhengHei", sans-serif !important;
}

h1 {
    color: var(--mn-purple) !important;
    letter-spacing: 0.04em !important;
    border-color: var(--mn-red) !important;
}

h2, h3 { color: var(--mn-red) !important; }

p, li, td, .subtitle, .sop-fault, .video-desc, .instruction-text, .meta-line {
    color: inherit;
}

a { color: var(--mn-purple); }

.portal-item,
.sop-card,
.menu-item,
.step-card,
.step,
.info-card,
.ppt-page,
.test-flow-card,
.playlist,
.player-section,
.video-item,
.mode-btn,
.result-box,
.image-box,
.current-info,
.prev-step-box {
    background: var(--mn-surface) !important;
    color: var(--mn-purple) !important;
    border-color: var(--mn-border) !important;
    box-shadow: 0 8px 22px rgba(7, 29, 43, 0.07);
}

.portal-item,
.sop-card,
.menu-item {
    border-top: 4px solid var(--mn-red) !important;
}

.portal-item:hover,
.sop-card:hover,
.menu-item:hover {
    color: var(--mn-purple) !important;
    border-color: var(--mn-red) !important;
    transform: translateY(-5px) !important;
    box-shadow: 0 16px 34px rgba(245, 43, 59, 0.16) !important;
}

.subtitle,
.sop-fault,
.video-desc,
.meta-line,
.img-label,
.prev-step-box,
.mn-muted {
    color: var(--mn-muted) !important;
}

.sop-number,
.category-tag,
.page-title,
.playlist-title,
.flow-title,
.prev-step-label {
    color: var(--mn-red) !important;
}

.line { background: var(--mn-red) !important; }
.blue-theme .line { background: var(--mn-blue) !important; }
.green-theme .line { background: var(--mn-teal) !important; }
.yellow-theme .line { background: var(--mn-orange) !important; }

button,
.btn,
.back-btn,
.nav-btn,
.back-home-btn,
.back-portal-btn,
.mode-btn {
    border-radius: 8px !important;
    font-family: inherit !important;
}

.btn,
.back-btn,
.nav-btn,
.back-home-btn,
.back-portal-btn,
button:not(.btn-yes):not(.btn-no):not(.mode-btn) {
    background: var(--mn-purple) !important;
    color: #fff !important;
    border: 1px solid var(--mn-purple) !important;
    text-decoration: none !important;
    transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease !important;
}

.btn:hover,
.back-btn:hover,
.nav-btn:hover,
.back-home-btn:hover,
.back-portal-btn:hover,
button:not(.btn-yes):not(.btn-no):not(.mode-btn):hover {
    background: var(--mn-red) !important;
    border-color: var(--mn-red) !important;
    color: #fff !important;
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(245, 43, 59, 0.2);
}

.btn-yes {
    background: #f2fbf7 !important;
    color: #16653d !important;
    border-color: #8fd4ae !important;
    border-left-color: #2e9f65 !important;
}

.btn-no {
    background: #fff4f5 !important;
    color: #9c2430 !important;
    border-color: #f2a8af !important;
    border-left-color: var(--mn-red) !important;
}

.sop-btn,
.video-item.active,
.mode-btn.active,
.btn-next {
    background: var(--mn-red) !important;
    color: #fff !important;
    border-color: var(--mn-red) !important;
}

.header,
#main-header {
    color: var(--mn-purple) !important;
    border-color: var(--mn-red) !important;
}

input[type="text"],
input[type="search"],
#searchInput {
    width: 100%;
    background: #fff !important;
    color: var(--mn-purple) !important;
    border: 1px solid var(--mn-border) !important;
    border-radius: 10px !important;
    box-shadow: 0 5px 16px rgba(7, 29, 43, 0.06) !important;
}

input:focus {
    outline: 3px solid rgba(245, 43, 59, 0.18) !important;
    border-color: var(--mn-red) !important;
}

table {
    width: 100%;
    overflow: hidden;
    border-radius: 10px;
    border-color: var(--mn-border) !important;
}

th {
    background: var(--mn-navy) !important;
    color: #fff !important;
    border-color: rgba(255, 255, 255, 0.16) !important;
}

td {
    background: #fff !important;
    color: var(--mn-purple) !important;
    border-color: var(--mn-border) !important;
}

img {
    border-color: var(--mn-border) !important;
    box-shadow: 0 8px 22px rgba(7, 29, 43, 0.08);
}

iframe,
.video-wrapper {
    border-radius: 12px !important;
    overflow: hidden;
    box-shadow: 0 10px 28px rgba(7, 29, 43, 0.14);
}

.warning,
.danger-box,
.abnormal {
    background: #fff3f4 !important;
    color: #8f202b !important;
    border-color: var(--mn-red) !important;
}

.normal,
.completion-check,
.check-box,
.result {
    background: #f1fbf6 !important;
    color: #175f3c !important;
    border-color: #2e9f65 !important;
}

.pending {
    background: #fff8e8 !important;
    color: #815a08 !important;
    border-color: var(--mn-orange) !important;
}

.footer-nav,
.nav-group,
.back-btn,
body > .back-btn {
    margin-left: auto !important;
    margin-right: auto !important;
}

/* SOP 閱讀性：舊版頁面原為深色卡片，套用淺色品牌主題後需同步提高內文對比。 */
.header-card,
.step-page,
.step-section,
.instruction,
.test-steps {
    background: #fff !important;
    color: var(--mn-purple) !important;
    border-color: var(--mn-border) !important;
    box-shadow: 0 8px 22px rgba(7, 29, 43, 0.06);
}

.instruction,
.instruction-text,
.step,
.test-steps,
.warning,
.normal,
.abnormal {
    font-size: 1.06rem !important;
    font-weight: 500;
    line-height: 1.85 !important;
    letter-spacing: 0.015em;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

.instruction-text,
.test-steps,
.test-steps li,
.step,
.header-card p {
    color: #24104f !important;
}

.step strong,
.instruction strong,
.test-steps strong,
.header-card strong {
    color: #14052f !important;
    font-weight: 800;
}

.meta-line {
    background: #f3f0fa !important;
    color: #4b3d68 !important;
    border: 1px solid rgba(28, 9, 80, 0.12) !important;
    font-family: inherit !important;
    font-size: 0.98rem !important;
    line-height: 1.7 !important;
}

.img-desc,
.image-label,
.img-label {
    color: #4b3d68 !important;
    font-size: 0.98rem !important;
    line-height: 1.6 !important;
}

.page-indicator,
.page-num {
    color: #555b6a !important;
    font-size: 1rem !important;
}

@media (min-width: 821px) {
    .header-card,
    .info-card,
    .step-page,
    .ppt-page,
    .test-steps {
        font-size: 17px;
    }
}

@media (max-width: 820px) {
    .mn-brandbar__inner {
        padding: 10px 14px 12px;
        flex-wrap: wrap;
        gap: 9px 12px;
    }

    .mn-system-name {
        font-size: 0.78rem;
        padding-left: 12px;
    }

    .mn-quicknav {
        flex: 1 0 100%;
        overflow-x: auto;
        padding-bottom: 2px;
    }

    .mn-quicknav a {
        flex: 1 0 auto;
        text-align: center;
        background: rgba(255, 255, 255, 0.07);
    }

    body > .container,
    body > .portal-container,
    body > .main-container,
    body > .sop-container {
        width: min(100% - 20px, 1120px) !important;
        margin: 18px auto !important;
        padding: 18px !important;
        border-radius: 12px !important;
    }

    body > .menu-grid {
        width: min(100% - 20px, 1200px) !important;
        margin-top: 18px !important;
        gap: 14px !important;
    }

    h1 { font-size: clamp(1.45rem, 7vw, 2rem) !important; }
    .menu-item { padding: 34px 16px !important; }
    .mn-footer { margin-top: 24px; padding: 20px 14px; }
}

@media print {
    .mn-brandbar, .mn-footer, .mn-quicknav { display: none !important; }
    body { background: #fff !important; }
    body > .container, body > .sop-container {
        width: 100% !important;
        max-width: none !important;
        margin: 0 !important;
        padding: 0 !important;
        box-shadow: none !important;
        border: 0 !important;
    }
}