/* ============================================================
   九游会(J9)集团官方网站 - style.css
   风格：现代奢华 · 深色渐变 · 金色点缀 · 毛玻璃 · 圆角卡片
   响应式 + 暗色模式 + 滚动动画
   ============================================================ */

/* ---------- Reset & Base ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #0b1a2e;
    --primary-light: #132a44;
    --accent: #d4a853;
    --accent-light: #e4c06a;
    --accent-dark: #b8923a;
    --bg: #f4f7fb;
    --card-bg: #ffffff;
    --text: #1a2634;
    --text-light: #5a6a7a;
    --border: #dce3ed;
    --shadow: 0 4px 20px rgba(0,0,0,.06);
    --radius: 16px;
    --radius-sm: 8px;
    --transition: all .3s cubic-bezier(.4,0,.2,1);
    --font: 'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
    --header-height: 70px;
    --max-width: 1200px;
}

/* 暗色模式变量 */
.dark {
    --primary: #0d1b2a;
    --primary-light: #1b2d44;
    --accent: #d4a853;
    --accent-light: #e4c06a;
    --accent-dark: #b8923a;
    --bg: #0f1923;
    --card-bg: #1a2634;
    --text: #e8edf2;
    --text-light: #8a9aaa;
    --border: #2a3a4a;
    --shadow: 0 4px 20px rgba(0,0,0,.3);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: background .4s, color .4s;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
    color: var(--accent-light);
}

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

ul {
    list-style: none;
}

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

/* ---------- Section ---------- */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
    letter-spacing: -.5px;
}

.dark .section-title h2 {
    color: var(--accent);
}

.section-title p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 640px;
    margin: 0 auto;
}

/* ---------- Theme Toggle ---------- */
.theme-toggle {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--accent);
    border: 2px solid var(--accent);
    cursor: pointer;
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(0,0,0,.3);
    transition: var(--transition);
    user-select: none;
}

.theme-toggle:hover {
    transform: scale(1.1);
    background: var(--accent);
    color: var(--primary);
}

/* ---------- Back to Top ---------- */
.back-top {
    position: fixed;
    bottom: 90px;
    right: 30px;
    z-index: 999;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--primary);
    border: none;
    cursor: pointer;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(0,0,0,.2);
    transition: all .4s cubic-bezier(.4,0,.2,1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.back-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-top:hover {
    background: var(--accent-light);
    transform: translateY(-3px);
}

/* ---------- Glass Effect ---------- */
.glass {
    background: rgba(255,255,255,.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,.12);
}

.dark .glass {
    background: rgba(0,0,0,.3);
    border-color: rgba(255,255,255,.06);
}

/* ---------- Cards ---------- */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,.1);
}

/* ---------- Grid System ---------- */
.grid {
    display: grid;
    gap: 32px;
}

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

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

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

/* ---------- Badge ---------- */
.badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 20px;
    background: var(--accent);
    color: var(--primary);
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .5px;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: .95rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(212,168,83,.3);
}

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

.btn-outline:hover {
    background: var(--accent);
    color: var(--primary);
}

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

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

/* ---------- Header ---------- */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0 24px;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(212,168,83,.2);
    transition: var(--transition);
    background: rgba(255,255,255,.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.dark #header {
    background: rgba(0,0,0,.3);
    border-color: rgba(255,255,255,.06);
}

#header .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: -1px;
    text-decoration: none;
}

#header .logo svg {
    flex-shrink: 0;
}

/* ---------- Navigation ---------- */
#main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

#main-nav a {
    padding: 8px 16px;
    border-radius: 8px;
    color: var(--text);
    font-size: .9rem;
    font-weight: 500;
    transition: var(--transition);
    text-decoration: none;
}

#main-nav a:hover {
    background: rgba(212,168,83,.15);
    color: var(--accent);
}

#search-toggle {
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.2rem;
    padding: 8px;
    cursor: pointer;
    transition: var(--transition);
}

#search-toggle:hover {
    color: var(--accent);
}

#mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.6rem;
    padding: 8px;
    cursor: pointer;
}

/* ---------- Search Bar ---------- */
#search-bar {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    padding: 16px 24px;
    background: var(--card-bg);
    border-bottom: 2px solid var(--accent);
    box-shadow: 0 8px 32px rgba(0,0,0,.1);
    z-index: 999;
}

#search-input {
    width: 100%;
    padding: 14px 20px;
    border-radius: 50px;
    border: 2px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

#search-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(212,168,83,.2);
}

#search-results {
    margin-top: 12px;
    max-height: 300px;
    overflow-y: auto;
    display: none;
}

#search-results div {
    padding: 8px 12px;
    cursor: pointer;
    border-radius: 6px;
    transition: var(--transition);
    color: var(--text);
}

#search-results div:hover {
    background: var(--border);
}

/* ---------- Hero Section ---------- */
#hero {
    padding-top: var(--header-height);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary) 0%, #0d2a44 50%, #1a3a5a 100%);
}

#hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 50%, rgba(212,168,83,.08) 0%, transparent 60%),
                radial-gradient(circle at 80% 30%, rgba(212,168,83,.05) 0%, transparent 50%);
    pointer-events: none;
}

#hero .container {
    position: relative;
    z-index: 2;
    width: 100%;
}

#hero-slider {
    display: flex;
    transition: transform .8s cubic-bezier(.4,0,.2,1);
}

.hero-slide {
    min-width: 100%;
    padding: 40px 0;
}

.hero-slide h1 {
    font-size: 3.6rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-slide h1 span {
    color: var(--accent);
}

.hero-slide p {
    font-size: 1.2rem;
    color: rgba(255,255,255,.8);
    margin-bottom: 36px;
    max-width: 560px;
    line-height: 1.7;
}

.hero-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,.3);
    cursor: pointer;
    transition: var(--transition);
}

.hero-dot.active {
    background: var(--accent);
}

/* ---------- About Section ---------- */
#about .mission-box {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: var(--radius);
    padding: 40px;
    color: #fff;
    min-height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

#about .mission-box h3 {
    font-size: 1.8rem;
    color: var(--accent);
    margin-bottom: 16px;
}

#about .mission-box p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: rgba(255,255,255,.85);
}

.stat-item {
    text-align: center;
    padding: 16px 24px;
    background: var(--card-bg);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.stat-item span:first-child {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
    display: block;
}

.stat-item span:last-child {
    font-size: .85rem;
    color: var(--text-light);
}

/* ---------- Brand Section ---------- */
#brand .brand-quote {
    background: linear-gradient(145deg, var(--primary-light), var(--primary));
    border-radius: var(--radius);
    padding: 40px;
    color: #fff;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

#brand .brand-quote blockquote {
    font-size: 1.2rem;
    font-style: italic;
    line-height: 1.7;
    color: rgba(255,255,255,.9);
}

#brand .brand-quote cite {
    margin-top: 16px;
    color: var(--accent);
    font-weight: 600;
    font-style: normal;
}

/* ---------- Culture Section ---------- */
#culture .card .icon {
    font-size: 2.4rem;
    margin-bottom: 16px;
}

#culture .card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    color: var(--primary);
}

#culture .card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* ---------- Team Section ---------- */
#team .card {
    text-align: center;
}

#team .avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.4rem;
    color: var(--primary);
    font-weight: 700;
}

#team .card h3 {
    font-size: 1.1rem;
    margin-bottom: 4px;
}

#team .card .role {
    font-size: .85rem;
    color: var(--text-light);
    margin-bottom: 8px;
}

#team .card .bio {
    font-size: .8rem;
    color: var(--text-light);
}

/* ---------- Products Section ---------- */
#products .card .product-icon {
    font-size: 2.8rem;
    margin-bottom: 12px;
}

#products .card h3 {
    font-size: 1.3rem;
    margin-bottom: 8px;
    color: var(--primary);
}

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

/* ---------- Advantages Section ---------- */
#advantages .card {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

#advantages .advantage-icon {
    font-size: 2.2rem;
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: var(--accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

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

#advantages .card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* ---------- Solutions Section ---------- */
#solutions .card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--primary);
}

#solutions .card p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 16px;
}

#solutions .card a {
    color: var(--accent);
    font-weight: 600;
}

/* ---------- Industries Section ---------- */
#industries .card {
    text-align: center;
    padding: 24px 16px;
}

#industries .card .industry-icon {
    font-size: 2.6rem;
    margin-bottom: 12px;
}

#industries .card h3 {
    font-size: 1rem;
    margin-bottom: 4px;
}

#industries .card p {
    font-size: .85rem;
    color: var(--text-light);
}

/* ---------- Data Section ---------- */
#data .card {
    text-align: center;
}

.counter {
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent);
    display: block;
}

#data .card p {
    color: var(--text-light);
    margin-top: 8px;
}

/* ---------- Cases Section ---------- */
#cases .case-banner {
    border-radius: var(--radius-sm);
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

#cases .card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--primary);
}

#cases .card p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: .9rem;
}

/* ---------- Partners Section ---------- */
#partners .card {
    text-align: center;
    padding: 24px 16px;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-light);
}

/* ---------- Testimonials Section ---------- */
#testimonials .card p {
    color: var(--text-light);
    line-height: 1.7;
    font-style: italic;
    margin-bottom: 16px;
}

#testimonials .testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

#testimonials .testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-weight: 700;
}

#testimonials .testimonial-author strong {
    color: var(--primary);
}

#testimonials .testimonial-author p {
    font-size: .85rem;
    color: var(--text-light);
    font-style: normal;
    margin: 0;
}

/* ---------- News Section ---------- */
#news article .news-date {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: var(--radius-sm);
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 16px;
}

#news article h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--primary);
}

#news article p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: .9rem;
}

/* ---------- FAQ Section ---------- */
.faq-item {
    cursor: pointer;
    padding: 20px 24px;
}

.faq-item h3 {
    font-size: 1rem;
    color: var(--primary);
    font-weight: 600;
}

.faq-icon {
    font-size: 1.2rem;
    transition: var(--transition);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s ease;
    margin-top: 0;
}

.faq-answer p {
    color: var(--text-light);
    line-height: 1.6;
    padding-top: 12px;
}

/* ---------- HowTo Section ---------- */
#howto .card {
    text-align: center;
    padding: 32px 16px;
}

#howto .step-number {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary);
}

#howto .card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--primary);
}

#howto .card p {
    color: var(--text-light);
    font-size: .9rem;
    line-height: 1.6;
}

/* ---------- Contact Section ---------- */
#contact .contact-info h3 {
    font-size: 1.2rem;
    color: var(--primary);
    margin-bottom: 16px;
}

#contact .contact-info p {
    color: var(--text-light);
    margin-bottom: 8px;
}

#contact .contact-form {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

#contact .contact-form h3 {
    font-size: 1.2rem;
    color: var(--primary);
    margin-bottom: 16px;
}

#contact .contact-form input,
#contact .contact-form select,
#contact .contact-form textarea {
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-size: .95rem;
    outline: none;
    transition: var(--transition);
    font-family: var(--font);
}

#contact .contact-form input:focus,
#contact .contact-form select:focus,
#contact .contact-form textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(212,168,83,.15);
}

#contact .contact-form button {
    width: 100%;
    justify-content: center;
    padding: 14px;
}

/* ---------- Sitemap ---------- */
#sitemap h4 {
    color: var(--primary);
    margin-bottom: 12px;
    font-size: 1rem;
}

#sitemap ul {
    list-style: none;
    color: var(--text-light);
    line-height: 2;
    font-size: .9rem;
}

#sitemap ul li a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

#sitemap ul li a:hover {
    color: var(--accent);
}

/* ---------- Footer ---------- */
footer {
    background: var(--primary);
    color: rgba(255,255,255,.8);
    padding: 40px 0 20px;
    border-top: 3px solid var(--accent);
}

footer .footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

footer .footer-brand span {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent);
}

footer p {
    font-size: .9rem;
    line-height: 1.7;
}

footer .footer-links {
    display: flex;
    gap: 16px;
    justify-content: flex-end;
    margin-top: 8px;
}

footer .footer-links a {
    color: rgba(255,255,255,.6);
    font-size: .85rem;
    text-decoration: none;
    transition: var(--transition);
}

footer .footer-links a:hover {
    color: var(--accent);
}

footer .footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1);
    padding-top: 20px;
    text-align: center;
    font-size: .8rem;
    color: rgba(255,255,255,.4);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .section {
        padding: 60px 0;
    }
    .hero-slide h1 {
        font-size: 2.8rem;
    }
}

@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;
    }
    .section {
        padding: 48px 0;
    }
    .card {
        padding: 24px;
    }
    .hero-slide h1 {
        font-size: 2.2rem;
    }
    .hero-slide p {
        font-size: 1rem;
    }
    #hero .btn {
        padding: 12px 24px;
        font-size: .9rem;
    }
    #main-nav {
        display: none;
    }
    #mobile-menu-btn {
        display: block;
    }
    #main-nav.mobile-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--card-bg);
        padding: 16px;
        box-shadow: 0 8px 32px rgba(0,0,0,.1);
        border-bottom: 2px solid var(--accent);
    }
    #main-nav.mobile-open a {
        padding: 12px 16px;
    }
    #search-bar {
        padding: 12px 16px;
    }
    .stat-item {
        padding: 12px 16px;
    }
    .stat-item span:first-child {
        font-size: 1.6rem;
    }
    footer .footer-links {
        justify-content: center;
        flex-wrap: wrap;
    }
    footer .grid-2 {
        text-align: center;
    }
    footer .grid-2 > div:last-child {
        text-align: center;
    }
    #team .avatar {
        width: 80px;
        height: 80px;
        font-size: 1.8rem;
    }
    #advantages .card {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    #advantages .advantage-icon {
        margin-bottom: 8px;
    }
}

@media (max-width: 480px) {
    .hero-slide h1 {
        font-size: 1.8rem;
    }
    .hero-slide p {
        font-size: .9rem;
    }
    .section-title h2 {
        font-size: 1.5rem;
    }
    .section-title p {
        font-size: .95rem;
    }
    .btn {
        padding: 10px 20px;
        font-size: .85rem;
    }
    #header {
        padding: 0 12px;
    }
    #header .logo {
        font-size: 1.2rem;
    }
    #header .logo svg {
        width: 32px;
        height: 32px;
    }
}

/* ---------- Scrollbar Styling ---------- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-light);
}

/* ---------- Selection ---------- */
::selection {
    background: var(--accent);
    color: var(--primary);
}

/* ---------- Focus Styles ---------- */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ---------- Print Styles ---------- */
@media print {
    .theme-toggle,
    .back-top,
    #search-bar,
    #mobile-menu-btn,
    #search-toggle {
        display: none !important;
    }
    #header {
        position: static;
        background: #fff;
        border-bottom: 1px solid #ccc;
    }
    body {
        background: #fff;
        color: #000;
    }
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    .fade-in {
        opacity: 1 !important;
        transform: none !important;
    }
}