/* 九州娱乐官网 - 完整样式表 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #f8f9fc;
    --text: #1a1f36;
    --primary: #1a3a5c;
    --accent: #f0c040;
    --glass: rgba(255,255,255,0.7);
    --shadow: 0 8px 32px rgba(0,0,0,0.08);
    --radius: 20px;
    --transition: 0.4s cubic-bezier(0.25,0.1,0.25,1);
}

[data-theme="dark"] {
    --bg: #0a0e1a;
    --text: #e8ecf4;
    --primary: #2a5a8c;
    --glass: rgba(20,30,50,0.7);
    --shadow: 0 8px 32px rgba(0,0,0,0.4);
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    transition: background var(--transition), color var(--transition);
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-weight: 700;
    letter-spacing: -0.02em;
}

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

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.glass {
    background: var(--glass);
    backdrop-filter: blur(20px);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid rgba(255,255,255,0.15);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--accent);
    color: #0a0e1a;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(240,192,64,0.3);
}

.section {
    padding: 100px 0;
    position: relative;
}

.section-title {
    font-size: 2.8rem;
    margin-bottom: 20px;
    text-align: center;
}

.section-sub {
    font-size: 1.1rem;
    opacity: 0.7;
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

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

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.card {
    background: var(--glass);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    border: 1px solid rgba(255,255,255,0.1);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 48px rgba(0,0,0,0.12);
}

.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease;
}

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

.badge {
    background: var(--accent);
    color: #0a0e1a;
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-block;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: background var(--transition);
}

header.scrolled {
    background: var(--glass);
    backdrop-filter: blur(30px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo svg {
    width: 40px;
    height: 40px;
}

.nav-list {
    display: flex;
    gap: 28px;
    list-style: none;
    font-weight: 500;
}

.nav-list a {
    position: relative;
    padding: 4px 0;
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s;
}

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

.nav-actions {
    display: flex;
    gap: 16px;
    align-items: center;
}

.theme-toggle,
.menu-toggle,
.search-toggle {
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: background 0.3s;
}

.theme-toggle:hover,
.menu-toggle:hover,
.search-toggle:hover {
    background: rgba(128,128,128,0.15);
}

.menu-toggle {
    display: none;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    z-index: 999;
    padding: 80px 24px;
    flex-direction: column;
    gap: 20px;
}

.mobile-menu.open {
    display: flex;
}

.mobile-menu a {
    font-size: 1.6rem;
    font-weight: 600;
    padding: 12px 0;
    border-bottom: 1px solid rgba(128,128,128,0.15);
}

.search-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(10px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.search-overlay.open {
    display: flex;
}

.search-box {
    background: var(--bg);
    padding: 40px;
    border-radius: var(--radius);
    width: 90%;
    max-width: 600px;
}

.search-box input {
    width: 100%;
    padding: 16px 20px;
    font-size: 1.2rem;
    border: 2px solid var(--accent);
    border-radius: 50px;
    background: transparent;
    color: var(--text);
    outline: none;
}

.search-box .close-search {
    float: right;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.8rem;
    cursor: pointer;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero .bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.2;
    pointer-events: none;
}

.hero .bg-glow:nth-child(1) {
    background: var(--accent);
    top: -100px;
    left: -100px;
}

.hero .bg-glow:nth-child(2) {
    background: var(--primary);
    bottom: -100px;
    right: -100px;
}

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

.hero h1 {
    font-size: 4.2rem;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.8;
    margin-bottom: 40px;
    max-width: 500px;
}

.hero-banner {
    position: relative;
    width: 100%;
    height: 500px;
    border-radius: var(--radius);
    overflow: hidden;
    margin-top: 40px;
}

.banner-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.banner-slide.active {
    opacity: 1;
}

.banner-slide svg {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-dots {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
}

.banner-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    cursor: pointer;
    transition: all 0.3s;
}

.banner-dots span.active {
    background: var(--accent);
    transform: scale(1.3);
}

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

.stat-item {
    text-align: center;
    padding: 32px;
}

.stat-num {
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent);
}

.stat-label {
    margin-top: 8px;
    opacity: 0.7;
}

.testimonial {
    padding: 40px;
    position: relative;
}

.testimonial::before {
    content: '“';
    font-size: 4rem;
    color: var(--accent);
    position: absolute;
    top: 0;
    left: 20px;
    opacity: 0.3;
}

.faq-item {
    border-bottom: 1px solid rgba(128,128,128,0.15);
    padding: 20px 0;
    cursor: pointer;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 1.1rem;
}

.faq-question .icon {
    transition: transform 0.3s;
}

.faq-item.open .faq-question .icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    padding-top: 0;
}

.faq-item.open .faq-answer {
    max-height: 300px;
    padding-top: 16px;
}

.howto-steps {
    counter-reset: step;
}

.howto-step {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    align-items: flex-start;
}

.howto-step::before {
    counter-increment: step;
    content: counter(step);
    background: var(--accent);
    color: #0a0e1a;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

footer {
    background: var(--primary);
    color: #e8ecf4;
    padding: 60px 0 30px;
    margin-top: 60px;
}

footer a {
    opacity: 0.8;
    transition: opacity 0.3s;
}

footer a:hover {
    opacity: 1;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: 40px;
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.9rem;
    opacity: 0.7;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 16px 0;
    font-size: 0.9rem;
    opacity: 0.7;
}

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

.pagination {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 40px;
}

.pagination a {
    padding: 8px 16px;
    border-radius: 8px;
    background: var(--glass);
    transition: background 0.3s;
}

.pagination a:hover {
    background: var(--accent);
    color: #0a0e1a;
}

.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--accent);
    color: #0a0e1a;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s;
    z-index: 500;
}

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

@media (max-width: 1024px) {
    .grid-2,
    .grid-4 {
        grid-template-columns: 1fr 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-list {
        display: none;
    }
    .menu-toggle {
        display: block;
    }
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    .hero h1 {
        font-size: 2.8rem;
    }
    .section-title {
        font-size: 2rem;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    .hero-banner {
        height: 300px;
    }
    .stat-num {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    .container {
        padding: 0 16px;
    }
    .section {
        padding: 60px 0;
    }
    .btn {
        padding: 12px 24px;
    }
}