:root {
    --primary: #ff7a1a;
    --primary-dark: #ff3d6e;
    --primary-light: #ffc46b;
    --secondary: #0f1220;
    --text: #0f1220;
    --text-light: #465063;
    --text-muted: #6b7280;
    --bg: #f6f7fb;
    --bg-alt: #eef1f7;
    --white: #ffffff;
    --border: #d7dde7;
    --shadow: 0 8px 18px rgba(15, 18, 32, 0.08);
    --shadow-lg: 0 18px 40px rgba(15, 18, 32, 0.12);
    --radius: 10px;
    --radius-lg: 16px;
    --transition: 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: radial-gradient(circle at 10% 0%, rgba(255, 122, 26, 0.12), transparent 45%),
        radial-gradient(circle at 90% 10%, rgba(255, 61, 110, 0.12), transparent 50%),
        var(--bg);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

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

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

ul, ol {
    list-style: none;
}

.header {
    background: rgba(255, 255, 255, 0.9);
    box-shadow: var(--shadow);
    backdrop-filter: blur(14px);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 28px;
    width: auto;
    display: block;
}
.footer-logo {
    height: 26px;
    width: auto;
    display: block;
}

.logo-icon svg {
    display: block;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--secondary);
    line-height: 1.2;
}

.logo-subtitle {
    font-size: 12px;
    color: var(--text-light);
}

.nav-desktop {
    display: flex;
    gap: 24px;
}

.nav-desktop .nav-link {
    color: var(--text);
    font-size: 15px;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

.nav-desktop .nav-link:hover,
.nav-desktop .nav-link.active {
    color: var(--primary-dark);
}

.nav-desktop .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

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

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: var(--transition);
}

.nav-mobile {
    display: none;
    background: linear-gradient(180deg, #ffffff 0%, #f2f4fb 100%);
    border-top: 1px solid var(--border);
    padding: 16px 20px;
}

.nav-mobile .nav-link {
    display: block;
    padding: 12px 0;
    color: var(--text);
    font-size: 15px;
    border-bottom: 1px solid var(--border);
}

.nav-mobile .nav-link:last-child {
    border-bottom: none;
}

.nav-mobile .nav-link.active {
    color: var(--primary);
}

.breadcrumb {
    background: var(--bg-alt);
    padding: 12px 0;
    font-size: 14px;
}

.breadcrumb .container {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.breadcrumb-item {
    color: var(--text-light);
}

.breadcrumb-item.current {
    color: var(--text);
}

.breadcrumb-separator {
    color: var(--text-muted);
}

.section {
    padding: 60px 0;
}

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

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 12px;
}

.section-header p {
    color: var(--text-light);
    font-size: 16px;
}

.hero {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #ffffff 0%, #f3f5ff 55%, #fff1e6 100%);
    padding: 70px 0;
}
.hero::before,
.hero::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    filter: blur(0);
    opacity: 0.8;
    pointer-events: none;
}
.hero::before {
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(255, 122, 26, 0.35), transparent 60%);
    left: -80px;
    top: -120px;
}
.hero::after {
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(255, 61, 110, 0.3), transparent 60%);
    right: -120px;
    top: -140px;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-content h1 {
    font-size: 36px;
    font-weight: 700;
    color: var(--secondary);
    line-height: 1.3;
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 16px;
    color: #2d3448;
    margin-bottom: 16px;
    line-height: 1.7;
}

.hero-date {
    font-size: 14px;
    color: #3b4357;
    margin-bottom: 24px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-image img {
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 50px rgba(15, 18, 32, 0.18);
    transform: translateZ(0);
}

.page-hero {
    background: linear-gradient(135deg, var(--white) 0%, var(--bg-alt) 100%);
    padding: 50px 0;
    text-align: center;
}

.page-hero h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 16px;
    line-height: 1.4;
}

.page-hero .page-desc {
    max-width: 800px;
    margin: 0 auto 16px;
    color: var(--text-light);
    font-size: 16px;
    line-height: 1.7;
}

.page-hero .page-update {
    font-size: 14px;
    color: var(--text-muted);
}

.page-hero-warning {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 14px 30px rgba(255, 61, 110, 0.25);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 18px 36px rgba(255, 61, 110, 0.32);
}

.btn-secondary {
    background: #111827;
    color: var(--white);
}

.btn-secondary:hover {
    background: #1f2937;
    color: var(--white);
}

.btn-outline {
    background: transparent;
    color: var(--primary-dark);
    border: 2px solid rgba(255, 61, 110, 0.55);
}

.btn-outline:hover {
    background: linear-gradient(135deg, rgba(255, 122, 26, 0.12), rgba(255, 61, 110, 0.12));
    color: var(--white);
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-contact {
    padding: 18px 36px;
    font-size: 17px;
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 40px;
    align-items: center;
}

.intro-text p {
    margin-bottom: 16px;
    color: var(--text);
    line-height: 1.8;
}

.intro-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    border: 1px solid rgba(255, 122, 26, 0.12);
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(255, 61, 110, 0.18);
    border-color: rgba(255, 61, 110, 0.35);
}

.product-image {
    padding: 20px;
    background: var(--bg-alt);
}

.product-image img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: var(--radius);
}

.product-info {
    padding: 20px;
}

.product-info h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 8px;
}

.product-position {
    font-size: 13px;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 12px;
}

.product-desc {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.6;
}

.section-footer {
    text-align: center;
    margin-top: 40px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
    border: 1px solid rgba(255, 122, 26, 0.12);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.feature-icon {
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 36px rgba(255, 61, 110, 0.18);
    border-color: rgba(255, 61, 110, 0.35);
}

.entry-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.entry-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform var(--transition), box-shadow var(--transition);
    display: block;
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
}

.entry-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 36px rgba(255, 61, 110, 0.18);
}
.entry-card::after {
    content: "";
    position: absolute;
    inset: -40%;
    background: radial-gradient(circle, rgba(255, 61, 110, 0.18), transparent 55%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}
.entry-card:hover::after {
    opacity: 1;
}
.entry-card.is-active {
    background: linear-gradient(135deg, rgba(255, 122, 26, 0.14), rgba(255, 61, 110, 0.12));
    border-color: rgba(255, 61, 110, 0.4);
    box-shadow: 0 18px 36px rgba(255, 61, 110, 0.2);
    transform: translateY(-4px);
}
.entry-card:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 61, 110, 0.25), var(--shadow-lg);
}

.entry-icon {
    margin-bottom: 16px;
    color: var(--primary);
    transition: transform 0.3s ease, color 0.3s ease;
}
.entry-card:hover .entry-icon {
    transform: translateY(-3px) scale(1.04);
    color: var(--primary-dark);
}

.entry-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 8px;
}

.entry-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.5;
}

.recommend-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.recommend-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
    display: block;
}

.recommend-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.recommend-image img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

.recommend-info {
    padding: 20px;
}

.recommend-date {
    font-size: 13px;
    color: var(--text-muted);
    display: block;
    margin-bottom: 8px;
}

.recommend-info h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.recommend-info p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.5;
}

.cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    text-align: center;
}

.cta-content h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 16px;
    margin-bottom: 24px;
}

.cta .btn-primary {
    background: var(--white);
    color: var(--primary);
}

.cta .btn-primary:hover {
    background: var(--bg-alt);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.related-card {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    display: block;
    transition: transform var(--transition), box-shadow var(--transition);
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.related-card h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 8px;
}

.related-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.5;
}

.footer {
    background: var(--secondary);
    color: var(--white);
    padding: 60px 0 0;
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand .logo-title,
.footer-brand .logo-subtitle {
    color: var(--white);
}

.footer-brand .logo-subtitle {
    opacity: 0.7;
}

.footer-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    padding: 6px 0;
    transition: color var(--transition);
}

.footer-column a:hover {
    color: var(--white);
}

.footer-partners {
    padding: 30px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-partners h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.partner-links {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 32px;
}

.partner-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px;
    transition: color var(--transition);
}

.partner-links a:hover {
    color: var(--white);
}

.footer-bottom {
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

.float-contact {
    position: fixed;
    right: 24px;
    bottom: 100px;
    z-index: 999;
}

.float-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    padding: 12px 20px;
    border-radius: 50px;
    box-shadow: 0 18px 40px rgba(255, 61, 110, 0.3);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.float-btn:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: var(--white);
    transform: scale(1.05);
}
.float-btn::after{
    content:"";
    position:absolute;
    inset:-40%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.35), transparent 60%);
    opacity:0.6;
    filter: blur(6px);
    pointer-events:none;
}

.float-btn span {
    font-size: 14px;
    font-weight: 500;
}

.mobile-contact {
    display: none;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    padding: 12px 20px;
    box-shadow: 0 -4px 10px rgba(0, 0, 0, 0.1);
    z-index: 998;
}

.mobile-contact-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    background: var(--primary);
    color: var(--white);
    padding: 14px;
    border-radius: var(--radius);
    font-weight: 600;
}

.product-detail {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 50px;
    align-items: start;
}

.product-detail.reverse {
    grid-template-columns: 1fr 400px;
}

.product-detail.reverse .product-detail-image {
    order: 2;
}

.product-detail-image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.product-tag {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 12px;
}

.product-tag.tag-featured {
    background: #10b981;
}

.product-tag.tag-premium {
    background: #8b5cf6;
}

.product-tag.tag-new {
    background: #f59e0b;
}

.product-tag.tag-latest {
    background: #ef4444;
}

.product-detail-info h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 8px;
}

.product-subtitle {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: 24px;
}

.product-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.feature-item {
    background: var(--bg-alt);
    padding: 12px 16px;
    border-radius: var(--radius);
}

.feature-label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.feature-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--secondary);
}

.product-description p {
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 16px;
}

.product-suitable {
    background: var(--bg-alt);
    padding: 20px;
    border-radius: var(--radius);
    margin: 24px 0;
}

.product-suitable h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.product-suitable ul {
    list-style: disc;
    padding-left: 20px;
}

.product-suitable li {
    font-size: 14px;
    color: var(--text-light);
    padding: 4px 0;
}

.product-actions {
    display: flex;
    gap: 16px;
    margin-top: 24px;
}

.compare-table-wrapper {
    overflow-x: auto;
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.compare-table th,
.compare-table td {
    padding: 16px;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.compare-table th {
    background: var(--primary);
    color: var(--white);
    font-weight: 600;
    font-size: 14px;
}

.compare-table th:first-child {
    text-align: left;
}

.compare-table td:first-child {
    text-align: left;
    font-weight: 500;
    color: var(--secondary);
}

.compare-table td {
    font-size: 14px;
    color: var(--text);
}

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

.compare-table tr:hover td {
    background: var(--bg-alt);
}

.advice-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.advice-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.advice-icon {
    margin-bottom: 16px;
}

.advice-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.advice-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

.notice-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.notice-card {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.notice-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.notice-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

.notice-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.guide-nav-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}

.guide-nav-item {
    background: var(--white);
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    display: block;
    transition: all var(--transition);
}

.guide-nav-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.guide-nav-number {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.guide-nav-title {
    font-size: 14px;
    color: var(--secondary);
    font-weight: 500;
}

.guide-section {
    max-width: 900px;
    margin: 0 auto;
}

.guide-section-header {
    margin-bottom: 32px;
}

.guide-step-badge {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 12px;
}

.guide-section-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--secondary);
}

.guide-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 40px;
    align-items: start;
    margin-bottom: 32px;
}

.guide-content.reverse {
    grid-template-columns: 400px 1fr;
}

.guide-content.reverse .guide-image {
    order: -1;
}

.guide-text h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
    margin-top: 24px;
}

.guide-text h3:first-child {
    margin-top: 0;
}

.guide-text p {
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 12px;
}

.guide-image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.guide-tips {
    background: #ecfdf5;
    border-left: 4px solid #10b981;
    padding: 20px 24px;
    border-radius: 0 var(--radius) var(--radius) 0;
}

.guide-tips.warning {
    background: #fef2f2;
    border-left-color: #ef4444;
}

.guide-tips h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.guide-tips ul {
    list-style: disc;
    padding-left: 20px;
}

.guide-tips li {
    font-size: 14px;
    color: var(--text);
    padding: 4px 0;
    line-height: 1.6;
}

.troubleshoot-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.troubleshoot-card {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.troubleshoot-card h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.troubleshoot-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.principle-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
}

.principle-icon {
    margin-bottom: 16px;
}

.principle-card h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.principle-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

.faq-nav-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}

.faq-nav-item {
    background: var(--white);
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    transition: all var(--transition);
}

.faq-nav-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.faq-nav-icon {
    color: var(--primary);
}

.faq-nav-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--secondary);
}

.faq-category {
    max-width: 900px;
    margin: 0 auto;
}

.faq-category-header {
    margin-bottom: 32px;
}

.faq-category-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 8px;
}

.faq-category-header p {
    color: var(--text-light);
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.faq-item {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.faq-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.faq-answer p {
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 12px;
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

.news-featured-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.news-featured-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.news-featured-image img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

.news-featured-content {
    padding: 24px;
}

.news-date {
    font-size: 13px;
    color: var(--text-muted);
}

.news-tag {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    font-size: 12px;
    padding: 2px 10px;
    border-radius: 20px;
    margin-left: 12px;
}

.news-featured-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--secondary);
    margin: 12px 0;
    line-height: 1.4;
}

.news-featured-content p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 16px;
}

.news-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.news-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.news-card-image img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
}

.news-card-content {
    padding: 20px;
}

.news-meta {
    margin-bottom: 12px;
}

.news-meta .news-tag {
    margin-left: 8px;
    font-size: 11px;
}

.news-card-content h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.news-card-content p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 12px;
}

.news-link {
    font-size: 14px;
    font-weight: 500;
}

.trends-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.trend-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.trend-icon {
    margin-bottom: 16px;
}

.trend-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.trend-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.tip-card {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.tip-number {
    display: inline-block;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}

.tip-card h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 8px;
}

.tip-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

.about-intro {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 50px;
    align-items: center;
}

.about-intro-content h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 20px;
}

.about-intro-content p {
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-intro-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.position-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.position-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
}

.position-icon {
    margin-bottom: 16px;
}

.position-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.position-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.content-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.content-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.content-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 16px;
}

.content-link {
    font-size: 14px;
    font-weight: 500;
}

.source-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.source-card {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.source-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.source-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

.promise-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.promise-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
}

.promise-icon {
    margin-bottom: 16px;
}

.promise-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.promise-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

.disclaimer-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.disclaimer-card {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.disclaimer-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.disclaimer-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

.warning-banner {
    display: flex;
    align-items: center;
    gap: 24px;
    background: #fffbeb;
    border: 1px solid #fcd34d;
    padding: 24px;
    border-radius: var(--radius-lg);
}

.warning-content h2 {
    font-size: 20px;
    font-weight: 600;
    color: #92400e;
    margin-bottom: 8px;
}

.warning-content p {
    font-size: 14px;
    color: #a16207;
    line-height: 1.7;
}

.risk-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.risk-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.risk-level {
    padding: 8px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--white);
}

.risk-high .risk-level {
    background: #ef4444;
}

.risk-medium .risk-level {
    background: #f59e0b;
}

.risk-low .risk-level {
    background: #10b981;
}

.risk-content {
    padding: 24px;
}

.risk-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 16px;
}

.risk-content > p {
    color: var(--text);
    line-height: 1.7;
    margin-bottom: 16px;
}

.risk-content h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary);
    margin: 20px 0 12px;
}

.risk-content ul {
    list-style: disc;
    padding-left: 20px;
}

.risk-content li {
    font-size: 14px;
    color: var(--text-light);
    padding: 4px 0;
    line-height: 1.6;
}

.custody-intro {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
}

.custody-intro p {
    font-size: 16px;
    color: var(--text);
    line-height: 1.8;
}

.custody-comparison {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.custody-card {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.custody-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 16px;
}

.custody-card ul {
    list-style: disc;
    padding-left: 20px;
}

.custody-card li {
    font-size: 14px;
    color: var(--text-light);
    padding: 6px 0;
    line-height: 1.6;
}

.custody-reminder {
    background: #fef3c7;
    border-left: 4px solid #f59e0b;
    padding: 20px 24px;
    border-radius: 0 var(--radius) var(--radius) 0;
}

.custody-reminder h3 {
    font-size: 16px;
    font-weight: 600;
    color: #92400e;
    margin-bottom: 8px;
}

.custody-reminder p {
    font-size: 14px;
    color: #a16207;
    line-height: 1.7;
}

.safety-tips-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.safety-tip {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.safety-tip-number {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}

.safety-tip-content h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 8px;
}

.safety-tip-content p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

.disclaimer-full {
    max-width: 900px;
    margin: 0 auto;
}

.disclaimer-section {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: 16px;
}

.disclaimer-section h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.disclaimer-section p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
}

.agreement-section {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.agreement-content {
    background: var(--bg-alt);
    padding: 32px;
    border-radius: var(--radius-lg);
}

.agreement-content h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 16px;
}

.agreement-content p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 12px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 16px;
}

.contact-intro {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 24px;
}

.contact-cta {
    background: var(--bg-alt);
    padding: 32px;
    border-radius: var(--radius-lg);
    text-align: center;
    margin-bottom: 32px;
}

.contact-hint {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 12px;
}

.contact-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-feature-text h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 4px;
}

.contact-feature-text p {
    font-size: 14px;
    color: var(--text-light);
}

.contact-scope h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 24px;
}

.scope-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.scope-item {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.scope-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 8px;
}

.scope-item p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

.before-contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.before-contact-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.before-contact-icon {
    margin-bottom: 20px;
}

.before-contact-icon.warning svg circle {
    fill: #fef3c7;
}

.before-contact-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 16px;
}

.before-contact-card ul {
    list-style: disc;
    padding-left: 20px;
}

.before-contact-card li {
    font-size: 14px;
    color: var(--text-light);
    padding: 6px 0;
    line-height: 1.6;
}

.common-questions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.common-question-item {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.common-question-item h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.common-question-item p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 12px;
}

.question-link {
    font-size: 14px;
    font-weight: 500;
}

.faq-link-section {
    text-align: center;
}

.faq-link-section p {
    color: var(--text-light);
    margin-bottom: 16px;
}

.security-reminder {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    background: #ecfdf5;
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid #a7f3d0;
}

.security-reminder-content h2 {
    font-size: 20px;
    font-weight: 600;
    color: #065f46;
    margin-bottom: 12px;
}

.security-reminder-content > p {
    color: #047857;
    margin-bottom: 16px;
}

.security-reminder-content ul {
    list-style: none;
    margin-bottom: 16px;
}

.security-reminder-content li {
    font-size: 14px;
    color: #065f46;
    padding: 6px 0;
    line-height: 1.6;
}

.prereading-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.prereading-card {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
    display: block;
    transition: all var(--transition);
}

.prereading-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.prereading-icon {
    margin-bottom: 16px;
}

.prereading-card h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 8px;
}

.prereading-card p {
    font-size: 14px;
    color: var(--text-light);
}

.contact-cta-section .btn-primary {
    background: var(--white);
    color: var(--primary);
}

.contact-cta-section .btn-primary:hover {
    background: var(--bg-alt);
}

@media (max-width: 1024px) {
    .nav-desktop {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .nav-mobile.active {
        display: block;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
    }
    
    .hero-image {
        order: -1;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .entry-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .recommend-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .product-detail {
        grid-template-columns: 1fr;
    }
    
    .product-detail.reverse {
        grid-template-columns: 1fr;
    }
    
    .product-detail-image {
        order: 0 !important;
    }
    
    .intro-content {
        grid-template-columns: 1fr;
    }
    
    .intro-image {
        order: -1;
    }
    
    .guide-nav-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .guide-content {
        grid-template-columns: 1fr;
    }
    
    .guide-content.reverse {
        grid-template-columns: 1fr;
    }
    
    .guide-image {
        order: 0 !important;
    }
    
    .faq-nav-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .news-featured-grid {
        grid-template-columns: 1fr;
    }
    
    .news-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .trends-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tips-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-intro {
        grid-template-columns: 1fr;
    }
    
    .about-intro-image {
        order: -1;
    }
    
    .position-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .content-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .promise-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .risk-grid {
        grid-template-columns: 1fr;
    }
    
    .safety-tips-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .prereading-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advice-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .notice-content {
        grid-template-columns: 1fr;
    }
    
    .principles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .troubleshoot-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 40px 0;
    }
    
    .section-header h2 {
        font-size: 24px;
    }
    
    .hero-content h1 {
        font-size: 26px;
    }
    
    .page-hero h1 {
        font-size: 22px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .entry-grid {
        grid-template-columns: 1fr;
    }
    
    .recommend-grid {
        grid-template-columns: 1fr;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .float-contact {
        display: block;
        right: 16px;
        bottom: 16px;
    }
    
    .mobile-contact {
        display: none;
    }
    
    body {
        padding-bottom: 0;
    }
    
    .guide-nav-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .faq-nav-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-list {
        grid-template-columns: 1fr;
    }
    
    .trends-grid {
        grid-template-columns: 1fr;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
    }
    
    .position-grid {
        grid-template-columns: 1fr;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .source-content {
        grid-template-columns: 1fr;
    }
    
    .promise-grid {
        grid-template-columns: 1fr;
    }
    
    .disclaimer-content {
        grid-template-columns: 1fr;
    }
    
    .custody-comparison {
        grid-template-columns: 1fr;
    }
    
    .safety-tips-grid {
        grid-template-columns: 1fr;
    }
    
    .before-contact-grid {
        grid-template-columns: 1fr;
    }
    
    .common-questions {
        grid-template-columns: 1fr;
    }
    
    .prereading-grid {
        grid-template-columns: 1fr;
    }
    
    .advice-grid {
        grid-template-columns: 1fr;
    }
    
    .principles-grid {
        grid-template-columns: 1fr;
    }
    
    .product-features {
        grid-template-columns: 1fr;
    }
    
    .warning-banner {
        flex-direction: column;
        text-align: center;
    }
    
    .security-reminder {
        flex-direction: column;
        text-align: center;
    }
    
    .scope-item {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-feature {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .compare-table th,
    .compare-table td {
        padding: 10px 8px;
        font-size: 12px;
    }
    
    .partner-links {
        flex-direction: column;
        gap: 12px;
    }
}
.hero-badge{display:inline-flex;align-items:center;gap:0.4rem;background:linear-gradient(135deg,rgba(255,122,26,0.18),rgba(255,61,110,0.18));color:#0f1220;padding:0.45rem 1rem;border-radius:999px;font-size:0.85rem;font-weight:700;margin-bottom:1rem;border:1px solid rgba(255,122,26,0.25)}
.reveal{opacity:0;transform:translateY(18px);transition:all 0.6s ease}
.reveal.is-visible{opacity:1;transform:translateY(0)}
.float-btn{animation:pulse 2.4s infinite}
.mobile-contact-btn{animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.08)}}