/* ============================================================
   hklife.com.cn - 香港生活指南门户
   Shared Stylesheet
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
    --primary: #1A73E8;
    --primary-dark: #1557B0;
    --primary-light: #E8F0FE;
    --accent: #00C4A7;
    --accent-dark: #00A88E;
    --accent-light: #E0FAF6;
    --bg: #F8FAFC;
    --surface: #FFFFFF;
    --text: #1A1A2E;
    --muted: #6B7280;
    --border: #E2E8F0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --radius-sm: 8px;
    --max-width: 1200px;
    --transition: 0.25s ease;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul,
ol {
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.4rem;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text);
    font-weight: 700;
    line-height: 1.35;
}

/* ---------- Layout Containers ---------- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 64px 0;
}

.section--alt {
    background: var(--primary-light);
}

.section--accent {
    background: var(--accent-light);
}

.text-center {
    text-align: center;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    line-height: 1.4;
}

.btn--primary {
    background: var(--primary);
    color: #fff;
}

.btn--primary:hover {
    background: var(--primary-dark);
    color: #fff;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--accent {
    background: var(--accent);
    color: #fff;
}

.btn--accent:hover {
    background: var(--accent-dark);
    color: #fff;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn--outline:hover {
    background: var(--primary);
    color: #fff;
    text-decoration: none;
}

.btn--lg {
    padding: 16px 40px;
    font-size: 1.1rem;
}

/* ---------- Header / Navigation ---------- */
.site-header {
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}

.nav__brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
}

.nav__brand:hover {
    text-decoration: none;
    color: var(--primary-dark);
}

.nav__brand .brand-accent {
    color: var(--accent);
}

.nav__brand .logo-badge {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 800;
    flex-shrink: 0;
}

/* Logo image */
.site-logo {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    vertical-align: middle;
    margin-right: 10px;
    display: inline-block;
}

.logo-link {
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

.nav__links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav__links a {
    color: var(--text);
    font-weight: 500;
    font-size: 0.95rem;
    text-decoration: none;
    transition: color var(--transition);
}

.nav__links a:hover {
    color: var(--primary);
    text-decoration: none;
}

.nav__links a.active {
    color: var(--primary);
    font-weight: 700;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav__toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--transition);
}

/* ---------- Hero ---------- */
.hero {
    background: linear-gradient(135deg, #1A73E8 0%, #00C4A7 100%);
    color: #fff;
    padding: 80px 0 72px;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--accent), var(--primary));
}

.hero__inner {
    max-width: 760px;
    margin: 0 auto;
    text-align: center;
}

.hero__badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: #fff;
    padding: 6px 18px;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero h1 {
    color: #fff;
    font-size: 2.8rem;
    margin-bottom: 18px;
    letter-spacing: -0.02em;
}

.hero__subtitle {
    font-size: 1.2rem;
    opacity: 0.92;
    margin-bottom: 32px;
    line-height: 1.6;
}

.hero__actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero__actions .btn--primary {
    background: #fff;
    color: var(--primary);
}

.hero__actions .btn--primary:hover {
    background: #f0f4ff;
}

.hero__actions .btn--outline {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.7);
}

.hero__actions .btn--outline:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

/* Page banner (subpages) */
.page-banner {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: #fff;
    padding: 56px 0 48px;
    text-align: center;
}

.page-banner h1 {
    color: #fff;
    font-size: 2.2rem;
    margin-bottom: 10px;
}

.page-banner p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 640px;
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
    margin-top: 16px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.9);
}

/* ---------- Section Heading ---------- */
.section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 48px;
}

.section-head h2 {
    font-size: 2rem;
    margin-bottom: 12px;
}

.section-head p {
    color: var(--muted);
    font-size: 1.05rem;
}

.section-eyebrow {
    display: inline-block;
    color: var(--accent);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 10px;
}

/* ---------- Card Grid ---------- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
}

.card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.card__body {
    padding: 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card__icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 18px;
    background: var(--primary-light);
    color: var(--primary);
}

.card__icon--accent {
    background: var(--accent-light);
    color: var(--accent);
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.card p {
    color: var(--muted);
    margin-bottom: 16px;
    flex: 1;
}

.card__link {
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.card__tag {
    display: inline-block;
    background: var(--accent-light);
    color: var(--accent-dark);
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.card__tag--primary {
    background: var(--primary-light);
    color: var(--primary-dark);
}

/* ---------- Article Layout ---------- */
.article-body {
    max-width: 820px;
    margin: 0 auto;
}

.article-body h2 {
    font-size: 1.75rem;
    margin: 48px 0 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border);
    color: var(--primary-dark);
}

.article-body h2:first-child {
    margin-top: 0;
}

.article-body h3 {
    font-size: 1.3rem;
    margin: 32px 0 12px;
    color: var(--text);
}

.article-body p {
    margin-bottom: 18px;
    color: #333;
}

.article-body ul,
.article-body ol {
    margin-bottom: 18px;
    color: #333;
}

.article-body .info-box {
    background: var(--primary-light);
    border-left: 4px solid var(--primary);
    padding: 20px 24px;
    border-radius: var(--radius-sm);
    margin: 28px 0;
}

.article-body .info-box--accent {
    background: var(--accent-light);
    border-left-color: var(--accent);
}

.article-body .info-box h4 {
    margin-bottom: 8px;
    color: var(--primary-dark);
}

.article-body .info-box--accent h4 {
    color: var(--accent-dark);
}

.article-body .cross-link {
    background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 28px;
    margin: 32px 0;
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.article-body .cross-link__icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.article-body .cross-link__text {
    flex: 1;
    min-width: 200px;
}

.article-body .cross-link__text h4 {
    margin-bottom: 4px;
    color: var(--text);
}

.article-body .cross-link__text p {
    margin-bottom: 0;
    color: var(--muted);
    font-size: 0.95rem;
}

/* ---------- Table ---------- */
.table-wrap {
    overflow-x: auto;
    margin: 28px 0;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

table th {
    background: var(--primary);
    color: #fff;
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    white-space: nowrap;
}

table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    color: #333;
}

table tr:nth-child(even) td {
    background: var(--bg);
}

table tr:last-child td {
    border-bottom: none;
}

/* ---------- FAQ ---------- */
.faq-list {
    max-width: 820px;
    margin: 0 auto;
}

.faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 14px;
    overflow: hidden;
}

.faq-item summary {
    padding: 20px 24px;
    font-weight: 600;
    font-size: 1.05rem;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    color: var(--text);
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary);
    flex-shrink: 0;
    transition: transform var(--transition);
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
}

.faq-item[open] summary {
    background: var(--primary-light);
}

.faq-item__answer {
    padding: 0 24px 22px;
    color: #333;
    line-height: 1.8;
}

/* ---------- Mini-program CTA ---------- */
.miniprogram-cta {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius);
    padding: 48px;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
    box-shadow: var(--shadow-lg);
}

.miniprogram-cta__content {
    flex: 1;
    min-width: 280px;
}

.miniprogram-cta__content h2 {
    color: #fff;
    font-size: 1.7rem;
    margin-bottom: 12px;
}

.miniprogram-cta__content p {
    color: rgba(255, 255, 255, 0.92);
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.miniprogram-cta__qr {
    background: #fff;
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    min-width: 200px;
    box-shadow: var(--shadow-md);
}

.miniprogram-cta__qr .qr-placeholder {
    width: 160px;
    height: 160px;
    background: #f0f0f0;
    border: 2px dashed var(--border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    color: var(--muted);
    margin: 0 auto 12px;
}

.miniprogram-cta__qr p {
    color: var(--text);
    font-size: 0.85rem;
    margin: 0;
    font-weight: 600;
}

.miniprogram-cta .btn {
    background: #fff;
    color: var(--primary);
}

.miniprogram-cta .btn:hover {
    background: #f0f4ff;
    color: var(--primary-dark);
}

/* ---------- Cross-site Section ---------- */
.cross-site {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.cross-site__card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    transition: all var(--transition);
}

.cross-site__card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
    transform: translateY(-4px);
}

.cross-site__badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    margin-bottom: 14px;
}

.cross-site__badge--info {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.cross-site__badge--tool {
    background: var(--accent-light);
    color: var(--accent-dark);
}

.cross-site__card h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.cross-site__card p {
    color: var(--muted);
    margin-bottom: 18px;
    font-size: 0.95rem;
}

.cross-site__domain {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 600;
}

/* ---------- Stats ---------- */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 24px;
    text-align: center;
}

.stat__num {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
}

.stat__num .accent {
    color: var(--accent);
}

.stat__label {
    color: var(--muted);
    font-size: 0.95rem;
    margin-top: 4px;
}

/* ---------- Footer ---------- */
.site-footer {
    background: #131A2E;
    color: #A0AEC0;
    padding: 56px 0 28px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-grid h4 {
    color: #fff;
    font-size: 1.05rem;
    margin-bottom: 16px;
}

.footer-grid ul {
    list-style: none;
    padding: 0;
}

.footer-grid ul li {
    margin-bottom: 10px;
}

.footer-grid a {
    color: #A0AEC0;
    font-size: 0.9rem;
}

.footer-grid a:hover {
    color: #fff;
}

.footer__brand {
    font-size: 1.3rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
}

.footer__brand .accent {
    color: var(--accent);
}

.footer__desc {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 16px;
}

.footer__partners {
    font-size: 0.85rem;
}

.footer__partners a {
    display: inline-block;
    margin-right: 12px;
    padding: 4px 10px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.85rem;
}

.footer-bottom a {
    color: #A0AEC0;
}

.footer-bottom a:hover {
    color: #fff;
}

/* ---------- Quick nav (TOC) ---------- */
.toc {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 28px;
    margin: 0 0 40px;
}

.toc h4 {
    font-size: 1rem;
    margin-bottom: 12px;
    color: var(--primary-dark);
}

.toc ul {
    list-style: none;
    padding: 0;
    columns: 2;
}

.toc li {
    margin-bottom: 6px;
    break-inside: avoid;
}

.toc a {
    font-size: 0.92rem;
    color: var(--text);
}

.toc a:hover {
    color: var(--primary);
}

/* ---------- Back to top ---------- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav__links {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--surface);
        flex-direction: column;
        gap: 0;
        padding: 0;
        box-shadow: var(--shadow-md);
        border-top: 1px solid var(--border);
    }

    .nav__links.nav__links--open {
        display: flex;
    }

    .nav__links a {
        padding: 16px 24px;
        border-bottom: 1px solid var(--border);
        width: 100%;
    }

    .nav__toggle {
        display: flex;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero__subtitle {
        font-size: 1rem;
    }

    .page-banner h1 {
        font-size: 1.7rem;
    }

    .section-head h2 {
        font-size: 1.5rem;
    }

    .section {
        padding: 44px 0;
    }

    .miniprogram-cta {
        padding: 32px 24px;
        flex-direction: column;
        text-align: center;
    }

    .toc ul {
        columns: 1;
    }

    .article-body .cross-link {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero h1 {
        font-size: 1.7rem;
    }

    .hero {
        padding: 56px 0 48px;
    }

    .card__body {
        padding: 22px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================================
   QR Code Section
   ============================================================ */
.qr-section {
    background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
}

.qr-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    max-width: 720px;
    margin: 0 auto;
}

.qr-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 36px 28px;
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    transition: transform var(--transition), box-shadow var(--transition);
}

.qr-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.qr-card__img {
    width: 200px;
    height: 200px;
    margin: 0 auto 20px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
    border: 1px solid var(--border);
    background: #fff;
    padding: 8px;
}

.qr-card__img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: calc(var(--radius-sm) - 4px);
}

.qr-card h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--primary-dark);
}

.qr-card p {
    color: var(--muted);
    font-size: 0.92rem;
    margin: 0;
}

/* QR variant: prominent (self-test page main CTA) */
.qr-section--hero .qr-cards {
    max-width: 820px;
    gap: 40px;
}

.qr-section--hero .qr-card {
    padding: 44px 32px;
}

.qr-section--hero .qr-card h3 {
    font-size: 1.35rem;
}

.qr-section--hero .qr-card p {
    font-size: 1rem;
}

/* ============================================================
   About Company (footer)
   ============================================================ */
.about-company {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    padding: 24px 28px;
    margin-bottom: 32px;
}

.about-company h4 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 8px;
    font-weight: 700;
}

.about-company p {
    color: #A0AEC0;
    font-size: 0.85rem;
    line-height: 1.75;
    margin: 0;
}

/* ---------- Responsive: QR + About ---------- */
@media (max-width: 768px) {
    .qr-cards {
        grid-template-columns: 1fr;
        max-width: 320px;
    }

    .qr-section--hero .qr-cards {
        max-width: 340px;
    }
}