/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #0d9e6c;
            --color-primary-dark: #067a50;
            --color-primary-light: #10c984;
            --color-accent: #f0a500;
            --color-accent-dark: #d49000;
            --color-accent-glow: #fbbf24;
            --color-bg-dark: #0b1120;
            --color-bg-card: #111c30;
            --color-bg-surface: #162032;
            --color-bg-light: #f5f7fa;
            --color-bg-white: #ffffff;
            --color-text-primary: #f1f5f9;
            --color-text-secondary: #b0bcc9;
            --color-text-muted: #6b7d95;
            --color-text-dark: #1a2133;
            --color-text-dark-secondary: #475569;
            --color-border: #233245;
            --color-border-light: #dde4ed;
            --color-live: #ef4444;
            --color-live-pulse: #f87171;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 9999px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.12);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.18);
            --shadow-glow: 0 0 32px rgba(240,165,0,0.25);
            --shadow-card: 0 4px 20px rgba(0,0,0,0.14);
            --transition-fast: 180ms ease;
            --transition-normal: 280ms ease;
            --transition-slow: 400ms cubic-bezier(0.4,0,0.2,1);
            --font-heading: 'PingFang SC','Microsoft YaHei','Helvetica Neue',sans-serif;
            --font-body: 'PingFang SC','Microsoft YaHei','Segoe UI',sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --max-width: 1260px;
        }

        /* ========== Reset & Base ========== */
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
        body{font-family:var(--font-body);line-height:1.7;color:var(--color-text-primary);background:var(--color-bg-dark);overflow-x:hidden;min-height:100vh}
        img{max-width:100%;height:auto;display:block}
        a{text-decoration:none;color:inherit;transition:color var(--transition-fast)}
        button{cursor:pointer;border:none;font-family:inherit;transition:all var(--transition-fast)}
        input{font-family:inherit;border:none;outline:none}
        ul,ol{list-style:none}
        h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);line-height:1.3;font-weight:700}
        ::selection{background:var(--color-accent);color:#0b1120}
        :focus-visible{outline:2px solid var(--color-accent);outline-offset:3px;border-radius:4px}

        /* ========== 容器 ========== */
        .container{max-width:var(--max-width);margin:0 auto;padding:0 28px}
        @media(max-width:768px){.container{padding:0 18px}}

        /* ========== 导航 Header ========== */
        .site-header{position:sticky;top:0;z-index:100;background:rgba(11,17,32,0.88);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,0.06);transition:all var(--transition-normal)}
        .site-header.scrolled{background:rgba(11,17,32,0.96);box-shadow:0 4px 28px rgba(0,0,0,0.45)}
        .header-inner{display:flex;align-items:center;justify-content:space-between;height:62px;gap:20px}
        .header-logo{display:flex;align-items:center;gap:10px;font-family:var(--font-heading);font-weight:800;font-size:1.15rem;color:var(--color-text-primary);white-space:nowrap;letter-spacing:-0.01em;transition:color var(--transition-fast);flex-shrink:0}
        .header-logo:hover{color:var(--color-accent)}
        .header-logo .logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:#fff;flex-shrink:0}
        .header-nav{display:flex;align-items:center;gap:6px}
        .header-nav a{display:inline-flex;align-items:center;padding:8px 18px;border-radius:var(--radius-full);font-size:0.92rem;font-weight:500;color:var(--color-text-secondary);transition:all var(--transition-fast);white-space:nowrap}
        .header-nav a:hover{color:var(--color-text-primary);background:rgba(255,255,255,0.04)}
        .header-nav a.active{color:var(--color-accent);background:rgba(240,165,0,0.1);font-weight:600}
        .header-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
        .header-search{display:flex;align-items:center;gap:8px;background:var(--color-bg-surface);border:1px solid var(--color-border);border-radius:var(--radius-full);padding:6px 16px;transition:all var(--transition-fast);min-width:180px}
        .header-search:focus-within{border-color:var(--color-accent);box-shadow:0 0 0 3px rgba(240,165,0,0.08)}
        .header-search input{background:transparent;color:var(--color-text-primary);font-size:0.88rem;width:100%;min-width:0}
        .header-search input::placeholder{color:var(--color-text-muted)}
        .header-search .search-icon{color:var(--color-text-muted);font-size:0.85rem;flex-shrink:0}
        .header-cta{display:inline-flex;align-items:center;gap:7px;padding:9px 20px;background:linear-gradient(135deg,var(--color-accent),var(--color-accent-dark));color:#0b1120;font-weight:700;font-size:0.9rem;border-radius:var(--radius-full);white-space:nowrap;transition:all var(--transition-fast);box-shadow:0 2px 12px rgba(240,165,0,0.25)}
        .header-cta:hover{transform:translateY(-1px);box-shadow:0 6px 22px rgba(240,165,0,0.4);background:linear-gradient(135deg,var(--color-accent-glow),var(--color-accent))}
        .header-cta:active{transform:translateY(0)}
        .mobile-menu-btn{display:none;background:none;color:var(--color-text-primary);font-size:1.4rem;padding:6px;border-radius:var(--radius-sm)}
        @media(max-width:860px){
            .header-nav{display:none}
            .header-search{min-width:auto;padding:6px 12px}
            .header-search input{display:none}
            .header-search .search-icon{font-size:0.95rem}
            .mobile-menu-btn{display:inline-flex;align-items:center;justify-content:center}
            .header-cta span.cta-text{display:none}
            .header-cta{padding:9px 14px;font-size:0.85rem}
            .header-logo{font-size:1rem}
            .header-logo .logo-icon{width:30px;height:30px;font-size:0.9rem}
        }
        @media(max-width:520px){
            .header-inner{height:54px;gap:10px}
            .header-logo{font-size:0.82rem;gap:6px}
            .header-logo .logo-icon{width:26px;height:26px;font-size:0.75rem}
            .header-search{display:none}
        }

        /* ========== 板块通用 ========== */
        .section{padding:var(--spacing-section) 0}
        @media(max-width:768px){.section{padding:var(--spacing-section-mobile) 0}}
        .section-dark{background:var(--color-bg-dark)}
        .section-light{background:var(--color-bg-light);color:var(--color-text-dark)}
        .section-accent-dark{background:var(--color-bg-card)}
        .section-label{display:inline-flex;align-items:center;gap:8px;font-size:0.84rem;font-weight:700;text-transform:uppercase;letter-spacing:0.06em;color:var(--color-accent);margin-bottom:12px}
        .section-label .dot{width:8px;height:8px;border-radius:50%;background:var(--color-accent);animation:pulse-dot 1.8s infinite}
        @keyframes pulse-dot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:0.4;transform:scale(1.6)}}
        .section-title{font-size:2.4rem;font-weight:800;letter-spacing:-0.02em;margin-bottom:16px;line-height:1.25}
        .section-subtitle{font-size:1.08rem;color:var(--color-text-secondary);max-width:640px;line-height:1.7}
        .section-light .section-title{color:var(--color-text-dark)}
        .section-light .section-subtitle{color:var(--color-text-dark-secondary)}
        @media(max-width:768px){.section-title{font-size:1.7rem}.section-subtitle{font-size:0.95rem}}
        @media(max-width:520px){.section-title{font-size:1.45rem}}

        /* ========== Hero 板块 ========== */
        .hero{position:relative;padding:100px 0 90px;overflow:hidden;min-height:560px;display:flex;align-items:center}
        .hero-bg{position:absolute;inset:0;z-index:0;background:url('assets/images/backpic/back-1.webp') center/cover no-repeat;background-position:center 40%}
        .hero-overlay{position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(11,17,32,0.78) 0%,rgba(11,17,32,0.88) 60%,rgba(11,17,32,0.96) 100%)}
        .hero .container{position:relative;z-index:2}
        .hero-content{max-width:700px}
        .hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(239,68,68,0.15);border:1px solid rgba(239,68,68,0.35);border-radius:var(--radius-full);padding:6px 16px;font-size:0.84rem;font-weight:600;color:var(--color-live);margin-bottom:20px}
        .hero-badge .live-dot{width:9px;height:9px;border-radius:50%;background:var(--color-live);animation:live-pulse 1.2s infinite}
        @keyframes live-pulse{0%,100%{box-shadow:0 0 0 0 rgba(239,68,68,0.7)}70%{box-shadow:0 0 0 10px rgba(239,68,68,0)}}
        .hero-title{font-size:3.2rem;font-weight:900;letter-spacing:-0.03em;line-height:1.15;margin-bottom:20px;color:#fff}
        .hero-title .highlight{color:var(--color-accent);position:relative;display:inline-block}
        .hero-desc{font-size:1.12rem;color:var(--color-text-secondary);margin-bottom:32px;max-width:560px;line-height:1.8}
        .hero-buttons{display:flex;flex-wrap:wrap;gap:14px}
        .btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:var(--radius-full);font-weight:700;font-size:0.95rem;transition:all var(--transition-normal);white-space:nowrap}
        .btn-primary{background:linear-gradient(135deg,var(--color-accent),var(--color-accent-dark));color:#0b1120;box-shadow:0 4px 18px rgba(240,165,0,0.3)}
        .btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(240,165,0,0.5)}
        .btn-primary:active{transform:translateY(0)}
        .btn-outline{border:2px solid rgba(255,255,255,0.3);color:#fff;background:transparent}
        .btn-outline:hover{border-color:var(--color-accent);color:var(--color-accent);background:rgba(240,165,0,0.06)}
        .hero-stats{display:flex;gap:36px;margin-top:40px;flex-wrap:wrap}
        .hero-stat{text-align:left}
        .hero-stat-value{font-size:2rem;font-weight:900;color:var(--color-accent);letter-spacing:-0.02em}
        .hero-stat-label{font-size:0.82rem;color:var(--color-text-muted);margin-top:2px}
        @media(max-width:768px){
            .hero{padding:70px 0 60px;min-height:auto}
            .hero-title{font-size:2rem}
            .hero-desc{font-size:0.95rem}
            .btn{padding:11px 22px;font-size:0.88rem}
            .hero-stats{gap:20px;margin-top:28px}
            .hero-stat-value{font-size:1.5rem}
        }
        @media(max-width:520px){
            .hero{padding:50px 0 44px}
            .hero-title{font-size:1.6rem}
            .hero-badge{font-size:0.75rem;padding:5px 12px}
            .hero-buttons{flex-direction:column;width:100%}
            .hero-buttons .btn{justify-content:center;width:100%}
            .hero-stats{justify-content:flex-start}
        }

        /* ========== 特性板块 ========== */
        .features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:40px}
        .feature-card{background:var(--color-bg-white);border-radius:var(--radius-lg);padding:32px 28px;border:1px solid var(--color-border-light);transition:all var(--transition-normal);position:relative;overflow:hidden}
        .feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
        .feature-card .feature-icon{width:52px;height:52px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:18px;background:linear-gradient(135deg,var(--color-primary-light),var(--color-primary));color:#fff}
        .feature-card h3{font-size:1.2rem;font-weight:700;margin-bottom:10px;color:var(--color-text-dark)}
        .feature-card p{font-size:0.92rem;color:var(--color-text-dark-secondary);line-height:1.7}
        @media(max-width:1024px){.features-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:600px){.features-grid{grid-template-columns:1fr;gap:18px}.feature-card{padding:24px 20px}}

        /* ========== 实时数据板块 ========== */
        .live-strip{display:flex;align-items:center;gap:20px;background:var(--color-bg-card);border-radius:var(--radius-lg);padding:16px 24px;border:1px solid var(--color-border);overflow-x:auto;margin-top:32px}
        .live-strip .live-indicator{display:flex;align-items:center;gap:7px;color:var(--color-live);font-weight:700;font-size:0.88rem;flex-shrink:0}
        .live-strip .live-indicator .pulse{width:8px;height:8px;border-radius:50%;background:var(--color-live);animation:live-pulse 1.2s infinite}
        .live-match-card{display:flex;align-items:center;gap:14px;background:rgba(255,255,255,0.03);border-radius:var(--radius-md);padding:12px 18px;flex-shrink:0;min-width:220px;border:1px solid transparent;transition:all var(--transition-fast)}
        .live-match-card:hover{border-color:var(--color-accent);background:rgba(240,165,0,0.04)}
        .live-match-card .team{font-weight:700;font-size:0.95rem;color:var(--color-text-primary)}
        .live-match-card .score{font-weight:900;font-size:1.3rem;color:var(--color-accent);min-width:40px;text-align:center}
        .live-match-card .match-status{font-size:0.72rem;color:var(--color-text-muted)}
        @media(max-width:768px){.live-strip{gap:12px;padding:12px 16px}.live-match-card{min-width:170px;padding:10px 14px}.live-match-card .score{font-size:1.1rem}}

        /* ========== 资讯列表板块 ========== */
        .news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:36px}
        .news-card{background:var(--color-bg-white);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--color-border-light);transition:all var(--transition-normal);display:flex;flex-direction:column}
        .news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:transparent}
        .news-card-img{width:100%;aspect-ratio:16/10;object-fit:cover;display:block}
        .news-card-body{padding:20px 22px 22px;flex:1;display:flex;flex-direction:column}
        .news-card-tag{display:inline-block;font-size:0.75rem;font-weight:600;color:var(--color-primary);background:rgba(13,158,108,0.1);padding:4px 10px;border-radius:var(--radius-full);margin-bottom:10px;align-self:flex-start}
        .news-card h3{font-size:1.05rem;font-weight:700;color:var(--color-text-dark);margin-bottom:8px;line-height:1.45}
        .news-card p{font-size:0.86rem;color:var(--color-text-dark-secondary);line-height:1.6;flex:1}
        .news-card .news-meta{font-size:0.78rem;color:var(--color-text-muted);margin-top:12px;display:flex;align-items:center;gap:12px}
        @media(max-width:1024px){.news-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:600px){.news-grid{grid-template-columns:1fr;gap:18px}}

        /* ========== 观看指南板块 ========== */
        .steps-list{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:36px;counter-reset:step}
        .step-item{position:relative;background:var(--color-bg-card);border-radius:var(--radius-lg);padding:28px 22px;border:1px solid var(--color-border);text-align:center;transition:all var(--transition-normal);counter-increment:step}
        .step-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--color-accent)}
        .step-item::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--color-accent),var(--color-accent-dark));color:#0b1120;font-weight:900;font-size:1.2rem;margin:0 auto 16px}
        .step-item h4{font-size:1rem;font-weight:700;color:var(--color-text-primary);margin-bottom:8px}
        .step-item p{font-size:0.84rem;color:var(--color-text-muted);line-height:1.6}
        @media(max-width:1024px){.steps-list{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:560px){.steps-list{grid-template-columns:1fr;gap:14px}}

        /* ========== 热门比赛板块 ========== */
        .matches-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:36px}
        .match-card-large{background:var(--color-bg-white);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--color-border-light);transition:all var(--transition-normal);display:flex;flex-direction:column}
        .match-card-large:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
        .match-card-large .match-img-wrap{position:relative;aspect-ratio:16/9;overflow:hidden}
        .match-card-large .match-img-wrap img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow)}
        .match-card-large:hover .match-img-wrap img{transform:scale(1.05)}
        .match-card-large .match-overlay{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,rgba(0,0,0,0.7));padding:30px 20px 16px}
        .match-card-large .match-overlay .match-teams{font-weight:800;font-size:1.1rem;color:#fff}
        .match-card-large .match-info{padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px}
        .match-card-large .match-date{font-size:0.82rem;color:var(--color-text-dark-secondary)}
        .match-card-large .match-cta{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;background:var(--color-primary);color:#fff;border-radius:var(--radius-full);font-weight:600;font-size:0.84rem;transition:all var(--transition-fast)}
        .match-card-large .match-cta:hover{background:var(--color-primary-dark);box-shadow:var(--shadow-md)}
        @media(max-width:768px){.matches-grid{grid-template-columns:1fr;gap:18px}}

        /* ========== FAQ 板块 ========== */
        .faq-list{max-width:780px;margin:36px auto 0;display:flex;flex-direction:column;gap:14px}
        .faq-item{background:var(--color-bg-white);border-radius:var(--radius-md);border:1px solid var(--color-border-light);overflow:hidden;transition:all var(--transition-fast)}
        .faq-item:hover{border-color:#cbd5e1}
        .faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;padding:18px 22px;background:none;font-size:1rem;font-weight:600;color:var(--color-text-dark);text-align:left;gap:12px}
        .faq-question .faq-icon{flex-shrink:0;width:24px;height:24px;border-radius:50%;background:rgba(13,158,108,0.1);display:flex;align-items:center;justify-content:center;font-size:0.7rem;color:var(--color-primary);transition:transform var(--transition-fast)}
        .faq-item.open .faq-question .faq-icon{transform:rotate(180deg);background:var(--color-primary);color:#fff}
        .faq-answer{max-height:0;overflow:hidden;transition:max-height var(--transition-normal),padding var(--transition-normal)}
        .faq-item.open .faq-answer{max-height:300px;padding:0 22px 20px}
        .faq-answer p{font-size:0.9rem;color:var(--color-text-dark-secondary);line-height:1.75}

        /* ========== CTA 板块 ========== */
        .cta-section{position:relative;overflow:hidden;background:var(--color-bg-card);border-radius:var(--radius-xl);margin:0 28px;padding:60px 40px;text-align:center}
        .cta-section::before{content:'';position:absolute;inset:0;background:url('assets/images/backpic/back-2.webp') center/cover no-repeat;opacity:0.18;z-index:0}
        .cta-section .cta-content{position:relative;z-index:1}
        .cta-section h2{font-size:2rem;font-weight:800;color:#fff;margin-bottom:12px}
        .cta-section p{font-size:1rem;color:var(--color-text-secondary);margin-bottom:28px;max-width:500px;margin-left:auto;margin-right:auto}
        .cta-section .btn-primary{font-size:1rem;padding:15px 34px}
        @media(max-width:768px){
            .cta-section{margin:0 12px;padding:40px 22px;border-radius:var(--radius-lg)}
            .cta-section h2{font-size:1.5rem}
        }

        /* ========== 页脚 ========== */
        .site-footer{background:var(--color-bg-dark);border-top:1px solid var(--color-border);padding:40px 0}
        .footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:18px}
        .footer-brand{font-weight:700;font-size:0.95rem;color:var(--color-text-primary)}
        .footer-copy{font-size:0.82rem;color:var(--color-text-muted)}
        .footer-links{display:flex;gap:20px;font-size:0.84rem}
        .footer-links a{color:var(--color-text-muted);transition:color var(--transition-fast)}
        .footer-links a:hover{color:var(--color-accent)}
        @media(max-width:600px){.footer-inner{flex-direction:column;text-align:center;gap:10px}.footer-links{justify-content:center;flex-wrap:wrap}}

        /* ========== 动画 ========== */
        @keyframes fadeInUp{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:translateY(0)}}
        .animate-fade-in-up{animation:fadeInUp 0.6s ease forwards}
        .animate-delay-1{animation-delay:0.1s;opacity:0}
        .animate-delay-2{animation-delay:0.2s;opacity:0}
        .animate-delay-3{animation-delay:0.3s;opacity:0}