:root {
    --primary-color: #0b5cab;
    --primary-dark: #073a6e;
    --primary-light: #e8f1fc;
    --accent-color: #d98c1f;
    --text-color: #292b2e;
    --text-muted: #6b7280;
    --bg-light: #f6f8fb;
    --border-color: #e5e9f0;
    --radius: 10px;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, .10);
    --transition: all .2s ease;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", Arial, sans-serif;
    color: var(--text-color);
    background: #fff;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

a { color: var(--primary-color); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }

h1, h2, h3 { font-weight: 700; letter-spacing: .01em; }

:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Header */
.site-header {
    background: rgba(255,255,255,.92);
    backdrop-filter: saturate(180%) blur(8px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    gap: 24px;
    flex-wrap: wrap;
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}
.brand-logo { max-height: 46px; width: auto; display: block; }
.brand-name { font-size: 20px; font-weight: 800; color: var(--primary-dark); letter-spacing: .02em; }

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 8px;
    margin: 0;
    padding: 0;
}
.main-nav > ul > li { position: relative; }
.main-nav a {
    color: var(--text-color); font-weight: 600; font-size: 15px;
    padding: 8px 10px; border-radius: 8px; display: block;
}
.main-nav a:hover { color: var(--primary-color); background: var(--primary-light); }

.nav-item-row { display: flex; align-items: center; gap: 0; border-radius: 8px; }
.nav-item-row:hover { background: var(--primary-light); }
.nav-item-row:hover a { background: transparent; }
.submenu-toggle {
    background: none; border: none; cursor: pointer; font-size: 11px; color: var(--text-muted);
    padding: 4px 10px 4px 0; line-height: 1; transition: transform .15s ease;
}
.has-children.open > .nav-item-row .submenu-toggle { transform: rotate(180deg); color: var(--primary-color); }

.sub-menu {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    background: #fff;
    border: 1px solid var(--border-color);
    width: max-content;
    min-width: 200px;
    max-width: 280px;
    box-shadow: var(--shadow-md);
    border-radius: var(--radius);
    padding: 8px 0;
    z-index: 200;
}
.has-children.open > .sub-menu { display: block; }
.sub-menu li { padding: 0; white-space: nowrap; }
.sub-menu a { display: block; padding: 9px 18px; white-space: nowrap; border-radius: 0; font-weight: 500; }
.sub-menu a:hover { background: var(--primary-light); }

.no-js .has-children:hover .sub-menu { display: block; }

/* Banner */
.banner-slider { background: var(--bg-light); padding: 24px 0; }
.slider { position: relative; overflow: hidden; border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.slide { display: none; }
.slide.active { display: block; }
.slide img { width: 100%; display: block; }

/* Home layout */
.home-layout { display: flex; gap: 32px; align-items: flex-start; padding: 32px 0 64px; }
.home-sidebar {
    width: 230px; flex-shrink: 0; background: #fff; border: 1px solid var(--border-color);
    border-radius: var(--radius); padding: 0; overflow: hidden; box-shadow: var(--shadow-sm);
}
.sidebar-title {
    background: var(--primary-color); color: #fff; margin: 0; padding: 14px 18px; font-size: 15px; font-weight: 700;
}
.sidebar-menu-list { list-style: none; margin: 0; padding: 8px; }
.sidebar-menu-list li { border-bottom: none; }
.sidebar-menu-list a {
    display: flex; align-items: center; gap: 10px; padding: 10px 10px; color: var(--text-color); font-size: 14px;
    font-weight: 500; border-radius: 8px;
}
.sidebar-menu-list a:hover { color: var(--primary-color); background: var(--primary-light); }
.sidebar-icon-emoji { font-size: 18px; width: 22px; text-align: center; }
.sidebar-icon-img { width: 22px; height: 22px; object-fit: contain; }

.home-main { flex: 1; min-width: 0; }
.home-intro { padding: 4px 0 32px; }
.home-intro h1 { font-size: 28px; color: var(--primary-dark); margin: 0 0 8px; }
.home-intro .slogan { color: var(--text-muted); font-size: 16px; margin: 0; }

@media (max-width: 768px) {
    .home-layout { flex-direction: column; }
    .home-sidebar { width: 100%; }
}

/* News */
.news-section { padding: 20px 0 60px; }
.section-head {
    display: flex; justify-content: space-between; align-items: baseline;
    margin-bottom: 18px; padding-bottom: 10px; border-bottom: 2px solid var(--primary-color);
}
.section-head h2 { margin: 0; font-size: 20px; color: var(--primary-dark); }
.more-link { font-size: 14px; font-weight: 600; }

.news-list { list-style: none; margin: 0; padding: 0; }
.news-list li { border-bottom: 1px solid var(--border-color); }
.news-list li:last-child { border-bottom: none; }
.news-list a {
    display: flex; align-items: center; gap: 10px; padding: 14px 10px; color: var(--text-color);
    border-radius: 8px; transition: var(--transition);
}
.news-list a:hover { color: var(--primary-color); background: var(--bg-light); padding-left: 16px; }
.news-title { flex: 1; font-weight: 500; }
.news-date, .news-cat { color: var(--text-muted); font-size: 13px; }
.badge-top { background: #d64545; color: #fff; font-size: 11px; font-weight: 700; padding: 3px 8px; border-radius: 4px; letter-spacing: .02em; }
.badge-protected { background: #6b5b95; color: #fff; font-size: 11px; padding: 3px 8px; border-radius: 4px; }
.badge-tag { display: inline-block; font-size: 11px; padding: 3px 9px; border-radius: 4px; font-weight: 700; letter-spacing: .01em; }

.tag-filter { margin-bottom: 20px; display: flex; flex-wrap: wrap; gap: 8px; }
.tag-filter a {
    display: inline-block; padding: 6px 14px; border-radius: 20px; font-size: 13px; font-weight: 500;
    border: 1px solid var(--border-color); color: var(--text-color); transition: var(--transition);
}
.tag-filter a:hover { border-color: var(--primary-color); color: var(--primary-color); }
.tag-filter a.active { background: var(--primary-color); color: #fff; border-color: var(--primary-color); }
.tag-filter-item.active { background: var(--tag-bg, var(--primary-color)) !important; color: var(--tag-color, #fff) !important; border-color: transparent; }

.password-gate {
    max-width: 420px; margin: 60px auto; text-align: center; background: var(--bg-light);
    padding: 44px 34px; border-radius: var(--radius); border: 1px solid var(--border-color);
}
.password-gate p { margin-bottom: 20px; font-size: 16px; }
.password-gate-form { display: flex; gap: 8px; }
.password-gate-form input[type=password] {
    flex: 1; padding: 11px 14px; border: 1px solid var(--border-color); border-radius: 8px; font-size: 15px;
}
.password-gate-form button {
    padding: 11px 22px; background: var(--primary-color); color: #fff; border: none; border-radius: 8px;
    cursor: pointer; font-weight: 600; transition: var(--transition);
}
.password-gate-form button:hover { background: var(--primary-dark); }
.error-msg { color: #c0392b; margin-bottom: 12px; }

.category-filter { margin-bottom: 14px; display: flex; flex-wrap: wrap; gap: 8px; }
.category-filter a {
    display: inline-block; padding: 7px 16px; border: 1px solid var(--border-color); border-radius: 20px;
    color: var(--text-color); font-size: 14px; font-weight: 500; transition: var(--transition);
}
.category-filter a:hover { border-color: var(--primary-color); color: var(--primary-color); }
.category-filter a.active { background: var(--primary-color); color: #fff; border-color: var(--primary-color); }

.pagination { margin-top: 28px; text-align: center; }
.pagination a {
    display: inline-block; min-width: 36px; padding: 7px 10px; margin: 0 3px; border: 1px solid var(--border-color);
    border-radius: 8px; color: var(--text-color); font-weight: 500; transition: var(--transition);
}
.pagination a:hover { border-color: var(--primary-color); color: var(--primary-color); }
.pagination a.active { background: var(--primary-color); color: #fff; border-color: var(--primary-color); }

/* Content page */
.content-page { padding: 44px 0 64px; }
.content-page h1 { color: var(--primary-dark); margin-bottom: 14px; font-size: 26px; }
.news-meta { color: var(--text-muted); font-size: 14px; margin-bottom: 24px; padding-bottom: 20px; border-bottom: 1px solid var(--border-color); }
.cover-image { max-width: 100%; border-radius: var(--radius); margin-bottom: 24px; }
.page-content img { max-width: 100%; border-radius: 6px; }
.page-content { font-size: 16px; }

.empty-tip { color: var(--text-muted); padding: 40px 0; text-align: center; }

/* Attachments */
.attachments-box { margin-top: 36px; padding: 22px; background: var(--bg-light); border-radius: var(--radius); border: 1px solid var(--border-color); }
.attachments-title { font-size: 15px; color: var(--primary-dark); margin: 0 0 14px; font-weight: 700; }
.attachments-list { list-style: none; margin: 0; padding: 0; }
.attachments-list li { border-bottom: 1px solid var(--border-color); }
.attachments-list li:last-child { border-bottom: none; }
.attachment-link {
    display: flex; align-items: center; gap: 10px; padding: 11px 8px; color: var(--text-color); border-radius: 8px;
}
.attachment-link:hover { background: #fff; box-shadow: var(--shadow-sm); }
.attachment-icon { font-size: 18px; }
.attachment-name { flex: 1; word-break: break-all; font-weight: 500; }
.attachment-size { color: var(--text-muted); font-size: 13px; }
.attachment-action {
    font-size: 11px; font-weight: 600; padding: 4px 12px; border-radius: 12px; background: var(--primary-color); color: #fff; flex-shrink: 0;
}

.attachment-modal {
    position: fixed; inset: 0; z-index: 1000; display: flex; align-items: center; justify-content: center;
}
.attachment-modal-backdrop { position: absolute; inset: 0; background: rgba(15,23,42,.8); }
.attachment-modal-content {
    position: relative; background: #fff; border-radius: var(--radius); max-width: 90vw; max-height: 90vh;
    padding: 18px; display: flex; flex-direction: column; box-shadow: var(--shadow-md);
}
.attachment-modal-close {
    position: absolute; top: -16px; right: -16px; width: 34px; height: 34px; border-radius: 50%;
    background: #fff; border: 1px solid var(--border-color); cursor: pointer; font-size: 16px; box-shadow: var(--shadow-md);
    transition: var(--transition);
}
.attachment-modal-close:hover { background: var(--primary-color); color: #fff; border-color: var(--primary-color); }
.attachment-modal-body { overflow: auto; display: flex; align-items: center; justify-content: center; }
.attachment-modal-body img { max-width: 85vw; max-height: 80vh; display: block; border-radius: 6px; }
.attachment-modal-body iframe { width: 85vw; height: 80vh; border: none; border-radius: 6px; }

/* Footer */
.site-footer {
    background: var(--primary-dark);
    color: #cfe0f3;
    text-align: center;
    padding: 36px 0;
    margin-top: 48px;
    font-size: 14px;
}
.site-footer p { margin: 6px 0; }
.site-footer a { color: #fff; font-weight: 600; }
.footer-contact { opacity: .85; }

@media (max-width: 768px) {
    .header-inner { flex-direction: column; gap: 12px; }
    .main-nav ul { flex-wrap: wrap; justify-content: center; gap: 6px; }
    .content-page h1 { font-size: 22px; }
}

/* Member auth */
.member-auth { display: flex; align-items: center; gap: 14px; font-size: 14px; }
.member-login-btn {
    display: inline-flex; align-items: center; gap: 6px; padding: 8px 18px; border-radius: 20px;
    background: #fff; border: 1px solid var(--border-color); color: var(--text-color);
    font-size: 13px; font-weight: 600; box-shadow: var(--shadow-sm); transition: var(--transition);
}
.member-login-btn:hover { border-color: var(--primary-color); color: var(--primary-color); box-shadow: var(--shadow-md); }
.member-name { color: var(--text-color); font-weight: 500; }
.member-logout-link { color: #c0392b; font-size: 13px; font-weight: 600; }

/* Certificate Query */
.cert-query-page { padding: 44px 0 64px; }
.cert-query-page h1 { color: var(--primary-dark); font-size: 26px; margin-bottom: 10px; }
.cert-intro { color: var(--text-muted); font-size: 16px; margin-bottom: 32px; }
.cert-breadcrumb { font-size: 14px; color: var(--text-muted); margin-bottom: 14px; }

.cert-category-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 18px;
}
.cert-category-card {
    display: flex; flex-direction: column; align-items: center; text-align: center; gap: 8px;
    padding: 28px 20px; background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius);
    color: var(--text-color); box-shadow: var(--shadow-sm); transition: var(--transition);
}
.cert-category-card:hover {
    transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--primary-color); color: var(--primary-color);
}
.cert-category-icon { font-size: 34px; }
.cert-category-title { font-weight: 700; font-size: 15px; line-height: 1.5; }
.cert-category-count { color: var(--text-muted); font-size: 13px; }

.cert-description { background: var(--bg-light); padding: 16px 20px; border-radius: var(--radius); margin-bottom: 24px; font-size: 14px; }

.cert-search-form {
    background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius);
    padding: 28px; box-shadow: var(--shadow-sm); margin-bottom: 28px;
}
.cert-search-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 20px; }
.cert-search-fields label { font-size: 14px; font-weight: 600; color: var(--text-color); }
.cert-search-fields input {
    width: 100%; padding: 11px 14px; margin-top: 6px; border: 1px solid var(--border-color);
    border-radius: 8px; font-size: 15px;
}
.cert-search-fields input:focus { border-color: var(--primary-color); outline: none; }
.cert-search-btn { width: 100%; padding: 13px; font-size: 16px; border: none; border-radius: 8px; cursor: pointer; }

@media (max-width: 600px) {
    .cert-search-fields { grid-template-columns: 1fr; }
}

.cert-result { border-radius: var(--radius); padding: 28px; }
.cert-result-fail {
    background: #fdecea; border: 1px solid #f3c2bc; display: flex; align-items: center; gap: 14px; color: #922b21;
}
.cert-result-fail p { margin: 0; font-weight: 500; }
.cert-result-success { background: #eafaf1; border: 1px solid #a9dfbf; }
.cert-result-header { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 20px; }
.cert-result-icon { font-size: 28px; }
.cert-result-header h2 { margin: 0 0 4px; font-size: 18px; color: #1b8a3d; }
.cert-result-id { margin: 0; color: var(--text-muted); font-size: 14px; }
.cert-result-fields { display: grid; grid-template-columns: 140px 1fr; gap: 10px 16px; margin: 0 0 20px; }
.cert-result-fields dt { font-weight: 600; color: var(--text-muted); font-size: 14px; }
.cert-result-fields dd { margin: 0; font-size: 14px; }
@media (max-width: 600px) {
    .cert-result-fields { grid-template-columns: 1fr; }
    .cert-result-fields dt { margin-top: 8px; }
}
.cert-download-btn {
    display: inline-flex; align-items: center; gap: 8px; padding: 11px 22px; border-radius: 8px; border: none;
    font-weight: 600; cursor: pointer;
}

/* Exam */
.exam-info-box { background: var(--bg-light); padding: 18px 22px; border-radius: var(--radius); margin-bottom: 24px; }
.exam-info-box p { margin: 4px 0; font-size: 15px; }
.exam-timer {
    position: sticky; top: 70px; z-index: 50; background: var(--primary-dark); color: #fff;
    padding: 10px 18px; border-radius: 8px; margin-bottom: 20px; font-weight: 700; text-align: center;
}
.exam-question-card {
    background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius);
    padding: 22px; margin-bottom: 18px; box-shadow: var(--shadow-sm);
}
.exam-question-title { font-weight: 700; color: var(--primary-dark); margin: 0 0 10px; }
.exam-question-content { margin-bottom: 14px; }
.exam-option { display: block; padding: 8px 4px; cursor: pointer; }
.exam-option input { margin-right: 8px; }
.exam-text-answer {
    width: 100%; padding: 10px; border: 1px solid var(--border-color); border-radius: 8px; font-family: inherit;
}