/* 杏彩体育 - 完整样式表 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background: #f8fafc;
    color: #1e293b;
    line-height: 1.6;
    overflow-x: hidden;
}

body.dark {
    background: #0f172a;
    color: #e2e8f0;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

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

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    transition: all .3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #1e3a5f, #2d6a9f);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(30, 58, 95, .3);
}

.btn-outline {
    background: transparent;
    border: 2px solid #1e3a5f;
    color: #1e3a5f;
}

.btn-outline:hover {
    background: #1e3a5f;
    color: #fff;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #1e3a5f, #2d6a9f);
    margin: 10px auto 0;
    border-radius: 2px;
}

.section-title p {
    color: #64748b;
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.dark .section-title p {
    color: #94a3b8;
}

.card {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, .06);
    transition: all .4s ease;
    border: 1px solid rgba(0, 0, 0, .04);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, .1);
}

.dark .card {
    background: #1e293b;
    border-color: rgba(255, 255, 255, .05);
}

.glass {
    background: rgba(255, 255, 255, .7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, .2);
}

.dark .glass {
    background: rgba(15, 23, 42, .7);
    border-color: rgba(255, 255, 255, .08);
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

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

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

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .7s ease, transform .7s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 992px) {
    .grid-4, .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    .section {
        padding: 60px 0;
    }
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
    .section-title h2 {
        font-size: 1.8rem;
    }
    .container {
        padding: 0 16px;
    }
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all .4s ease;
    padding: 12px 0;
}

.header-scrolled {
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: 0 2px 30px rgba(0, 0, 0, .08);
}

.dark .header-scrolled {
    background: rgba(15, 23, 42, .92);
}

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

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, #1e3a5f, #2d6a9f);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -.5px;
}

.logo span {
    background: linear-gradient(135deg, #f59e0b, #f97316);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav a {
    font-weight: 500;
    font-size: .95rem;
    position: relative;
    padding: 4px 0;
    transition: color .3s;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #1e3a5f;
    transition: width .3s ease;
}

.nav a:hover::after, .nav a.active::after {
    width: 100%;
}

.dark .nav a::after {
    background: #60a5fa;
}

.nav a:hover {
    color: #1e3a5f;
}

.dark .nav a:hover {
    color: #60a5fa;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
    background: none;
    border: none;
}

.menu-toggle span {
    width: 28px;
    height: 3px;
    background: #1e293b;
    border-radius: 4px;
    transition: all .3s;
}

.dark .menu-toggle span {
    background: #e2e8f0;
}

.dark-mode-toggle {
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    padding: 4px;
    transition: transform .3s;
    color: #1e293b;
}

.dark .dark-mode-toggle {
    color: #e2e8f0;
}

.dark-mode-toggle:hover {
    transform: scale(1.1);
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        flex-direction: column;
        background: rgba(255, 255, 255, .98);
        backdrop-filter: blur(24px);
        padding: 20px;
        gap: 16px;
        box-shadow: 0 8px 30px rgba(0, 0, 0, .1);
    }
    .dark .nav {
        background: rgba(15, 23, 42, .98);
    }
    .nav.open {
        display: flex;
    }
    .menu-toggle {
        display: flex;
    }
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #0b1f33 0%, #1e3a5f 50%, #2d6a9f 100%);
    padding-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(45, 106, 159, .3) 0%, transparent 70%);
    border-radius: 50%;
    animation: heroGlow 8s ease-in-out infinite alternate;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(245, 158, 11, .15) 0%, transparent 70%);
    border-radius: 50%;
    animation: heroGlow2 10s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-60px, 40px); }
}

@keyframes heroGlow2 {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, -30px); }
}

.hero-content {
    position: relative;
    z-index: 2;
    color: #fff;
    max-width: 700px;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero-content h1 span {
    background: linear-gradient(135deg, #f59e0b, #f97316);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.2rem;
    opacity: .9;
    margin-bottom: 30px;
    line-height: 1.8;
}

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

.hero .btn-primary {
    background: #fff;
    color: #1e3a5f;
    font-weight: 700;
}

.hero .btn-primary:hover {
    background: #f1f5f9;
    box-shadow: 0 8px 24px rgba(255, 255, 255, .2);
}

.hero .btn-outline {
    border-color: #fff;
    color: #fff;
}

.hero .btn-outline:hover {
    background: #fff;
    color: #1e3a5f;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, .15);
}

.hero-stats .stat h3 {
    font-size: 2rem;
    font-weight: 700;
}

.hero-stats .stat p {
    font-size: .9rem;
    opacity: .7;
    margin-top: 4px;
}

.hero-visual {
    position: relative;
    z-index: 2;
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.hero-visual svg {
    width: 100%;
    max-width: 500px;
    height: auto;
    filter: drop-shadow(0 20px 60px rgba(0, 0, 0, .3));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.hero-grid {
    display: flex;
    align-items: center;
    gap: 60px;
}

@media (max-width: 992px) {
    .hero-grid {
        flex-direction: column;
        text-align: center;
    }
    .hero-content h1 {
        font-size: 2.8rem;
    }
    .hero-stats {
        justify-content: center;
    }
    .hero-visual {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.2rem;
    }
    .hero-stats {
        gap: 24px;
        flex-wrap: wrap;
    }
    .hero-stats .stat h3 {
        font-size: 1.6rem;
    }
}

.about .grid-2 {
    align-items: center;
    gap: 50px;
}

.about-image svg {
    width: 100%;
    max-width: 480px;
    height: auto;
    margin: 0 auto;
}

.about-text h2 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.about-text h2 span {
    color: #1e3a5f;
}

.dark .about-text h2 span {
    color: #60a5fa;
}

.about-text p {
    margin-bottom: 16px;
    color: #475569;
    font-size: 1.05rem;
}

.dark .about-text p {
    color: #94a3b8;
}

.brand-story {
    background: #f1f5f9;
}

.dark .brand-story {
    background: #0f172a;
}

.brand-story .grid-3 {
    gap: 24px;
}

.brand-story .card {
    text-align: center;
    padding: 40px 20px;
}

.brand-story .card svg {
    width: 60px;
    height: 60px;
    margin: 0 auto 16px;
}

.brand-story .card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.brand-story .card p {
    color: #64748b;
    font-size: .95rem;
}

.dark .brand-story .card p {
    color: #94a3b8;
}

.culture {
    background: #fff;
}

.dark .culture {
    background: #1e293b;
}

.culture .grid-4 .card {
    text-align: center;
    padding: 24px 16px;
}

.culture .grid-4 .card svg {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
}

.culture .grid-4 .card h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.team .grid-3 .card {
    text-align: center;
    padding: 32px 20px;
}

.team .grid-3 .card svg {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 16px;
    background: #e2e8f0;
    padding: 8px;
}

.team .grid-3 .card h4 {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.team .grid-3 .card p {
    color: #64748b;
    font-size: .9rem;
}

.dark .team .grid-3 .card p {
    color: #94a3b8;
}

.products {
    background: #f8fafc;
}

.dark .products {
    background: #0f172a;
}

.products .grid-3 .card {
    padding: 24px;
}

.products .grid-3 .card svg {
    width: 56px;
    height: 56px;
    margin-bottom: 16px;
}

.products .grid-3 .card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.products .grid-3 .card p {
    color: #64748b;
    font-size: .95rem;
}

.dark .products .grid-3 .card p {
    color: #94a3b8;
}

.advantages {
    background: #fff;
}

.dark .advantages {
    background: #1e293b;
}

.advantages .grid-3 .card {
    text-align: center;
    padding: 36px 20px;
}

.advantages .grid-3 .card svg {
    width: 52px;
    height: 52px;
    margin: 0 auto 16px;
}

.advantages .grid-3 .card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.advantages .grid-3 .card p {
    color: #64748b;
    font-size: .95rem;
}

.dark .advantages .grid-3 .card p {
    color: #94a3b8;
}

.services {
    background: #f1f5f9;
}

.dark .services {
    background: #0f172a;
}

.services .grid-3 .card {
    padding: 28px;
}

.services .grid-3 .card svg {
    width: 48px;
    height: 48px;
    margin-bottom: 14px;
}

.services .grid-3 .card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.services .grid-3 .card p {
    color: #64748b;
    font-size: .95rem;
}

.dark .services .grid-3 .card p {
    color: #94a3b8;
}

.solutions {
    background: #fff;
}

.dark .solutions {
    background: #1e293b;
}

.solutions .grid-2 .card {
    padding: 32px;
}

.solutions .grid-2 .card svg {
    width: 48px;
    height: 48px;
    margin-bottom: 14px;
}

.solutions .grid-2 .card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.solutions .grid-2 .card p {
    color: #64748b;
    font-size: .95rem;
}

.dark .solutions .grid-2 .card p {
    color: #94a3b8;
}

.industries {
    background: #f8fafc;
}

.dark .industries {
    background: #0f172a;
}

.industries .grid-4 .card {
    text-align: center;
    padding: 24px 16px;
}

.industries .grid-4 .card svg {
    width: 44px;
    height: 44px;
    margin: 0 auto 12px;
}

.industries .grid-4 .card h4 {
    font-size: 1rem;
    margin-bottom: 6px;
    color: #1e293b;
}

.dark .industries .grid-4 .card h4 {
    color: #e2e8f0;
}

.stats {
    background: linear-gradient(135deg, #1e3a5f, #2d6a9f);
    color: #fff;
    padding: 60px 0;
}

.stats .grid-4 {
    text-align: center;
}

.stats .grid-4 .stat h3 {
    font-size: 2.4rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.stats .grid-4 .stat p {
    font-size: 1rem;
    opacity: .8;
}

.cases .grid-2 .card {
    padding: 24px;
    display: flex;
    gap: 20px;
    align-items: center;
}

.cases .grid-2 .card svg {
    width: 120px;
    height: 120px;
    border-radius: 12px;
    flex-shrink: 0;
}

.cases .grid-2 .card h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
}

.cases .grid-2 .card p {
    color: #64748b;
    font-size: .95rem;
}

.dark .cases .grid-2 .card p {
    color: #94a3b8;
}

@media (max-width: 768px) {
    .cases .grid-2 .card {
        flex-direction: column;
        text-align: center;
    }
}

.partners .grid-4 .card {
    text-align: center;
    padding: 20px;
    background: transparent;
    box-shadow: none;
    border: 1px solid #e2e8f0;
}

.dark .partners .grid-4 .card {
    border-color: rgba(255, 255, 255, .1);
}

.partners .grid-4 .card svg {
    width: 80px;
    height: 80px;
    margin: 0 auto;
}

.testimonials {
    background: #f1f5f9;
}

.dark .testimonials {
    background: #0f172a;
}

.testimonials .grid-2 .card {
    padding: 32px;
    position: relative;
}

.testimonials .grid-2 .card::before {
    content: '"';
    font-size: 4rem;
    position: absolute;
    top: 8px;
    left: 20px;
    color: #1e3a5f;
    opacity: .15;
    font-family: Georgia, serif;
}

.testimonials .grid-2 .card p {
    font-style: italic;
    margin-bottom: 16px;
    color: #475569;
}

.dark .testimonials .grid-2 .card p {
    color: #cbd5e1;
}

.testimonials .grid-2 .card .author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonials .grid-2 .card .author svg {
    width: 44px;
    height: 44px;
    border-radius: 50%;
}

.testimonials .grid-2 .card .author h4 {
    font-size: 1rem;
}

.testimonials .grid-2 .card .author span {
    font-size: .85rem;
    color: #64748b;
}

.dark .testimonials .grid-2 .card .author span {
    color: #94a3b8;
}

.news .grid-3 .card {
    padding: 24px;
}

.news .grid-3 .card .date {
    font-size: .85rem;
    color: #94a3b8;
    margin-bottom: 8px;
}

.news .grid-3 .card h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    line-height: 1.4;
}

.news .grid-3 .card p {
    color: #64748b;
    font-size: .95rem;
}

.dark .news .grid-3 .card p {
    color: #94a3b8;
}

.articles {
    background: #fff;
}

.dark .articles {
    background: #1e293b;
}

.articles .grid-3 .card {
    padding: 24px;
}

.articles .grid-3 .card .date {
    font-size: .85rem;
    color: #94a3b8;
    margin-bottom: 8px;
}

.articles .grid-3 .card h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.faq {
    background: #f8fafc;
}

.dark .faq {
    background: #0f172a;
}

.faq-item {
    border-bottom: 1px solid #e2e8f0;
    padding: 16px 0;
    cursor: pointer;
}

.dark .faq-item {
    border-color: rgba(255, 255, 255, .1);
}

.faq-item:last-child {
    border: none;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 1.05rem;
    padding: 4px 0;
}

.faq-question svg {
    width: 20px;
    height: 20px;
    transition: transform .3s;
    flex-shrink: 0;
    margin-left: 12px;
}

.faq-item.open .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s ease, padding .3s;
    padding: 0 0 0 0;
    color: #475569;
    font-size: .95rem;
}

.dark .faq-answer {
    color: #94a3b8;
}

.faq-item.open .faq-answer {
    max-height: 300px;
    padding: 12px 0 4px 0;
}

.howto {
    background: #fff;
}

.dark .howto {
    background: #1e293b;
}

.howto .grid-3 .card {
    text-align: center;
    padding: 36px 20px;
    position: relative;
}

.howto .grid-3 .card .step {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #1e3a5f;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    margin: 0 auto 16px;
}

.dark .howto .grid-3 .card .step {
    background: #60a5fa;
}

.howto .grid-3 .card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.howto .grid-3 .card p {
    color: #64748b;
    font-size: .95rem;
}

.dark .howto .grid-3 .card p {
    color: #94a3b8;
}

.contact {
    background: #f1f5f9;
}

.dark .contact {
    background: #0f172a;
}

.contact .grid-2 {
    gap: 40px;
}

.contact-info .info-item {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.contact-info .info-item svg {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
}

.contact-info .info-item h4 {
    font-size: 1rem;
    margin-bottom: 2px;
}

.contact-info .info-item p {
    color: #64748b;
    font-size: .95rem;
}

.dark .contact-info .info-item p {
    color: #94a3b8;
}

.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    font-size: 1rem;
    margin-bottom: 16px;
    background: #fff;
    transition: border .3s;
    font-family: inherit;
}

.dark .contact-form input, .dark .contact-form textarea {
    background: #1e293b;
    border-color: rgba(255, 255, 255, .1);
    color: #e2e8f0;
}

.contact-form input:focus, .contact-form textarea:focus {
    outline: none;
    border-color: #1e3a5f;
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

footer {
    background: #0b1f33;
    color: #cbd5e1;
    padding: 60px 0 30px;
}

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

.footer-col h4 {
    color: #fff;
    font-size: 1.1rem;
    margin-bottom: 16px;
    font-weight: 600;
}

.footer-col p {
    font-size: .95rem;
    line-height: 1.7;
    opacity: .8;
}

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul li a {
    font-size: .95rem;
    opacity: .8;
    transition: opacity .3s;
}

.footer-col ul li a:hover {
    opacity: 1;
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: .9rem;
    opacity: .7;
}

.footer-bottom a {
    color: #cbd5e1;
    margin-left: 16px;
}

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

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .footer-bottom a {
        margin: 0 8px;
    }
}

.breadcrumb {
    padding: 12px 0;
    font-size: .9rem;
    color: #64748b;
    background: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
}

.dark .breadcrumb {
    background: #0f172a;
    color: #94a3b8;
    border-color: rgba(255, 255, 255, .05);
}

.breadcrumb a {
    color: #1e3a5f;
}

.dark .breadcrumb a {
    color: #60a5fa;
}

.breadcrumb span {
    margin: 0 6px;
}

.search-bar {
    display: flex;
    max-width: 400px;
    margin: 0 auto 40px;
}

.search-bar input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
    border-radius: 10px 0 0 10px;
    font-size: 1rem;
    background: #fff;
    outline: none;
}

.dark .search-bar input {
    background: #1e293b;
    border-color: rgba(255, 255, 255, .1);
    color: #e2e8f0;
}

.search-bar button {
    padding: 12px 20px;
    background: #1e3a5f;
    color: #fff;
    border: none;
    border-radius: 0 10px 10px 0;
    cursor: pointer;
    font-weight: 600;
    transition: background .3s;
}

.search-bar button:hover {
    background: #2d6a9f;
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #1e3a5f;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all .4s;
    z-index: 999;
    border: none;
    box-shadow: 0 4px 16px rgba(0, 0, 0, .2);
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    background: #2d6a9f;
}

.banner-slider {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    margin: 20px 0;
}

.banner-slide {
    display: none;
    animation: fadeSlide .6s ease;
}

.banner-slide.active {
    display: block;
}

.banner-slide img, .banner-slide svg {
    width: 100%;
    height: auto;
    border-radius: 20px;
}

@keyframes fadeSlide {
    from { opacity: 0; }
    to { opacity: 1; }
}

.banner-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 16px;
}

.banner-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #cbd5e1;
    cursor: pointer;
    transition: all .3s;
}

.banner-dots span.active {
    background: #1e3a5f;
    width: 28px;
    border-radius: 6px;
}

.sitemap {
    background: #f8fafc;
    padding: 40px 0;
    border-top: 1px solid #e2e8f0;
}

.dark .sitemap {
    background: #0f172a;
    border-color: rgba(255, 255, 255, .05);
}

.sitemap .grid-4 h4 {
    font-size: 1rem;
    margin-bottom: 12px;
    color: #1e293b;
}

.dark .sitemap .grid-4 h4 {
    color: #e2e8f0;
}

.sitemap .grid-4 ul li {
    margin-bottom: 6px;
}

.sitemap .grid-4 ul li a {
    font-size: .9rem;
    color: #64748b;
    transition: color .3s;
}

.sitemap .grid-4 ul li a:hover {
    color: #1e3a5f;
}

.dark .sitemap .grid-4 ul li a {
    color: #94a3b8;
}

.dark .sitemap .grid-4 ul li a:hover {
    color: #60a5fa;
}

.friend-links {
    background: #fff;
    padding: 24px 0;
    border-top: 1px solid #e2e8f0;
}

.dark .friend-links {
    background: #1e293b;
    border-color: rgba(255, 255, 255, .05);
}

.friend-links .container {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

.friend-links a {
    font-size: .9rem;
    color: #64748b;
    transition: color .3s;
}

.friend-links a:hover {
    color: #1e3a5f;
}

.dark .friend-links a {
    color: #94a3b8;
}

.dark .friend-links a:hover {
    color: #60a5fa;
}

.safety-note {
    background: #fef9c3;
    border-left: 4px solid #f59e0b;
    padding: 16px 20px;
    border-radius: 8px;
    margin: 20px 0;
    font-size: .95rem;
}

.dark .safety-note {
    background: #1e293b;
    border-color: #f59e0b;
    color: #e2e8f0;
}