/* ============================================
   九州娱乐官方网站 - 完整CSS样式
   风格：暗色奢华 + 金色渐变 + 毛玻璃
   ============================================ */

/* --- 全局重置与变量 --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* 默认暗色模式 */
    --primary: #0a0e27;
    --secondary: #1a1f4e;
    --accent: #f7c948;
    --accent2: #e94560;
    --text: #e8e8f0;
    --text2: #a0a4c0;
    --bg: #0a0e27;
    --card: rgba(26, 31, 78, 0.6);
    --glass: rgba(255, 255, 255, 0.06);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --radius: 16px;
    --transition: 0.3s ease;
}

/* 亮色模式 */
.light {
    --primary: #f5f7ff;
    --secondary: #e0e4f0;
    --accent: #d4a017;
    --accent2: #c0392b;
    --text: #1a1f3a;
    --text2: #555;
    --bg: #f5f7ff;
    --card: rgba(255, 255, 255, 0.85);
    --glass: rgba(0, 0, 0, 0.04);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    transition: background var(--transition), color var(--transition);
    overflow-x: hidden;
}

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

a:hover {
    color: var(--accent2);
}

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

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

/* --- 毛玻璃通用类 --- */
.glass {
    background: var(--glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* --- Header --- */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: background var(--transition);
}

.light header {
    background: rgba(245, 247, 255, 0.85);
    border-bottom-color: rgba(0, 0, 0, 0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: 1px;
}

.logo svg {
    width: 36px;
    height: 36px;
}

nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

nav a {
    color: var(--text2);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 6px 0;
    border-bottom: 2px solid transparent;
    transition: all var(--transition);
}

nav a:hover,
nav a.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

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

.menu-toggle span {
    width: 28px;
    height: 3px;
    background: var(--text);
    border-radius: 3px;
    transition: all var(--transition);
}

.dark-toggle {
    background: none;
    border: 2px solid var(--text2);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text2);
    font-size: 1.2rem;
    transition: all var(--transition);
    margin-left: 12px;
}

.dark-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* --- Hero 区域 --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 100px 20px 60px;
    background: radial-gradient(ellipse at 20% 50%, rgba(247, 201, 72, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 50%, rgba(233, 69, 96, 0.08) 0%, transparent 60%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.hero-bg .orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: orbFloat 20s infinite alternate;
}

.hero-bg .orb:nth-child(1) {
    width: 400px;
    height: 400px;
    background: var(--accent);
    top: -10%;
    left: -5%;
    animation-duration: 25s;
}

.hero-bg .orb:nth-child(2) {
    width: 350px;
    height: 350px;
    background: var(--accent2);
    bottom: -10%;
    right: -5%;
    animation-duration: 20s;
    animation-delay: -5s;
}

.hero-bg .orb:nth-child(3) {
    width: 200px;
    height: 200px;
    background: #6c5ce7;
    top: 40%;
    left: 50%;
    animation-duration: 18s;
    animation-delay: -10s;
}

@keyframes orbFloat {
    0% {
        transform: translate(0, 0) scale(1);
    }
    100% {
        transform: translate(40px, -30px) scale(1.2);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text2);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* --- 按钮 --- */
.btn {
    display: inline-block;
    padding: 14px 36px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), #e6b800);
    color: #0a0e27;
    box-shadow: 0 4px 20px rgba(247, 201, 72, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(247, 201, 72, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 2px solid var(--text2);
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-3px);
}

/* --- 通用 Section --- */
section {
    padding: 80px 20px;
}

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

.section-title h2 {
    font-size: 2.4rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-title p {
    color: var(--text2);
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.05rem;
}

/* --- 网格布局 --- */
.grid-2,
.grid-3,
.grid-4 {
    display: grid;
    gap: 30px;
}

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

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

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

/* --- 卡片 --- */
.card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 30px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: all var(--transition);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
    border-color: rgba(247, 201, 72, 0.2);
}

.card .icon {
    font-size: 2.4rem;
    margin-bottom: 16px;
}

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

.card p {
    color: var(--text2);
    font-size: 0.95rem;
}

/* --- About 区块 --- */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

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

.about-text p {
    color: var(--text2);
    margin-bottom: 16px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.stat {
    text-align: center;
    padding: 20px;
    background: var(--glass);
    border-radius: 12px;
}

.stat .num {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--accent);
}

.stat .label {
    color: var(--text2);
    font-size: 0.9rem;
    margin-top: 4px;
}

/* --- 时间线 --- */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent), var(--accent2));
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    padding-left: 30px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -25px;
    top: 6px;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    border: 3px solid var(--bg);
}

.timeline-item .year {
    font-weight: 700;
    color: var(--accent);
    font-size: 1.1rem;
}

.timeline-item h4 {
    margin: 4px 0 8px;
}

.timeline-item p {
    color: var(--text2);
    font-size: 0.95rem;
}

/* --- 产品网格 --- */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.product-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 28px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: all var(--transition);
}

.product-card:hover {
    transform: translateY(-6px);
    border-color: rgba(247, 201, 72, 0.3);
}

.product-card .emoji {
    font-size: 3rem;
    margin-bottom: 16px;
}

.product-card h3 {
    margin-bottom: 8px;
}

.product-card p {
    color: var(--text2);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.product-card .tag {
    display: inline-block;
    background: rgba(247, 201, 72, 0.15);
    color: var(--accent);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* --- 优势网格 --- */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.advantage-item {
    text-align: center;
    padding: 30px 20px;
}

.advantage-item .num-icon {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--accent);
    opacity: 0.5;
    margin-bottom: 8px;
}

.advantage-item h4 {
    margin-bottom: 8px;
}

.advantage-item p {
    color: var(--text2);
    font-size: 0.9rem;
}

/* --- 客户评价 --- */
.testimonial-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.testimonial-card .stars {
    color: var(--accent);
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.testimonial-card blockquote {
    color: var(--text2);
    font-style: italic;
    margin-bottom: 16px;
}

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

.testimonial-card .author .avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #0a0e27;
}

.testimonial-card .author .name {
    font-weight: 600;
}

.testimonial-card .author .role {
    color: var(--text2);
    font-size: 0.85rem;
}

/* --- FAQ --- */
.faq-item {
    background: var(--card);
    border-radius: 12px;
    margin-bottom: 12px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    overflow: hidden;
}

.faq-question {
    padding: 18px 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    transition: background var(--transition);
}

.faq-question:hover {
    background: rgba(247, 201, 72, 0.05);
}

.faq-question .arrow {
    transition: transform var(--transition);
    font-size: 1.2rem;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    padding: 0 24px;
    color: var(--text2);
}

.faq-item.open .faq-answer {
    max-height: 300px;
    padding: 0 24px 18px;
}

/* --- 联系我们 --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info h3 {
    margin-bottom: 20px;
}

.contact-info p {
    color: var(--text2);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-info .label {
    font-weight: 600;
    color: var(--text);
    min-width: 80px;
}

/* --- Footer --- */
footer {
    background: rgba(0, 0, 0, 0.3);
    padding: 60px 20px 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.light footer {
    background: rgba(0, 0, 0, 0.03);
    border-top-color: rgba(0, 0, 0, 0.06);
}

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

.footer-col h4 {
    margin-bottom: 16px;
    font-size: 1.1rem;
}

.footer-col p,
.footer-col a {
    color: var(--text2);
    font-size: 0.9rem;
    display: block;
    margin-bottom: 8px;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--text2);
}

.footer-bottom a {
    color: var(--text2);
    margin: 0 8px;
}

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

/* --- 返回顶部 --- */
.back-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent);
    color: #0a0e27;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(247, 201, 72, 0.3);
    transition: all var(--transition);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    z-index: 999;
}

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

.back-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(247, 201, 72, 0.4);
}

/* --- 搜索模态框 --- */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.search-modal.active {
    display: flex;
}

.search-modal .search-box {
    background: var(--card);
    border-radius: var(--radius);
    padding: 30px;
    width: 100%;
    max-width: 500px;
}

.search-modal input {
    width: 100%;
    padding: 14px 18px;
    border-radius: 12px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    background: var(--bg);
    color: var(--text);
    font-size: 1rem;
    outline: none;
    transition: border var(--transition);
}

.search-modal input:focus {
    border-color: var(--accent);
}

.search-modal .results {
    margin-top: 16px;
    max-height: 300px;
    overflow-y: auto;
}

.search-modal .results a {
    display: block;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text2);
}

.search-modal .results a:hover {
    color: var(--accent);
}

.search-close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 2rem;
    color: var(--text);
    cursor: pointer;
    background: none;
    border: none;
}

/* --- 滚动动画 --- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Banner 轮播 --- */
.banner-carousel {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius);
    margin-bottom: 40px;
}

.banner-slides {
    display: flex;
    transition: transform 0.6s ease;
}

.banner-slide {
    min-width: 100%;
    padding: 60px 40px;
    background: var(--card);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.banner-slide h3 {
    font-size: 1.8rem;
    margin-bottom: 12px;
}

.banner-slide p {
    color: var(--text2);
    max-width: 500px;
}

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

.banner-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text2);
    cursor: pointer;
    transition: all var(--transition);
}

.banner-dots span.active {
    background: var(--accent);
    transform: scale(1.2);
}

.banner-arrows {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    pointer-events: none;
    padding: 0 12px;
}

.banner-arrows button {
    pointer-events: auto;
    background: rgba(0, 0, 0, 0.4);
    border: none;
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: background var(--transition);
}

.banner-arrows button:hover {
    background: rgba(0, 0, 0, 0.7);
}

/* --- HowTo 步骤 --- */
.howto-steps {
    counter-reset: step;
}

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

.howto-step .step-num {
    counter-increment: step;
    content: counter(step);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent);
    color: #0a0e27;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    flex-shrink: 0;
}

.howto-step .step-content h4 {
    margin-bottom: 4px;
}

.howto-step .step-content p {
    color: var(--text2);
    font-size: 0.95rem;
}

/* --- 合作伙伴 --- */
.partner-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    filter: grayscale(1);
    opacity: 0.6;
    transition: all var(--transition);
}

.partner-logos:hover {
    filter: grayscale(0);
    opacity: 1;
}

.partner-logo {
    padding: 16px 24px;
    background: var(--glass);
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text2);
}

/* --- 新闻卡片 --- */
.news-card {
    background: var(--card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: all var(--transition);
}

.news-card:hover {
    transform: translateY(-4px);
    border-color: rgba(247, 201, 72, 0.2);
}

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

.news-card .news-body .date {
    color: var(--text2);
    font-size: 0.85rem;
    margin-bottom: 8px;
}

.news-card .news-body h4 {
    margin-bottom: 8px;
}

.news-card .news-body p {
    color: var(--text2);
    font-size: 0.9rem;
}

/* --- 案例网格 --- */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.case-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 28px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: all var(--transition);
}

.case-card:hover {
    transform: translateY(-4px);
    border-color: rgba(247, 201, 72, 0.2);
}

.case-card .case-tag {
    display: inline-block;
    background: rgba(247, 201, 72, 0.1);
    color: var(--accent);
    padding: 2px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-bottom: 12px;
}

.case-card h4 {
    margin-bottom: 8px;
}

.case-card p {
    color: var(--text2);
    font-size: 0.9rem;
}

/* --- 表单元素（联系表单） --- */
input,
textarea {
    width: 100%;
    padding: 12px 16px;
    margin-bottom: 12px;
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.08);
    background: var(--bg);
    color: var(--text);
    font-size: 1rem;
    outline: none;
    transition: border var(--transition);
}

input:focus,
textarea:focus {
    border-color: var(--accent);
}

textarea {
    resize: vertical;
}

/* --- 响应式设计 --- */
@media (max-width: 992px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-content {
        grid-template-columns: 1fr;
    }

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

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

    .hero h1 {
        font-size: 2.6rem;
    }
}

@media (max-width: 768px) {
    nav {
        display: none;
        flex-direction: column;
        background: var(--card);
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        padding: 20px;
        border-radius: 0 0 var(--radius) var(--radius);
        backdrop-filter: blur(20px);
    }

    nav.open {
        display: flex;
    }

    .menu-toggle {
        display: flex;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

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

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

    section {
        padding: 50px 16px;
    }

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

    .about-stats {
        grid-template-columns: 1fr;
    }
}