/* roulang page: index */
/* ============ 设计变量 ============ */
        :root {
            --primary: #0f2b46;
            --primary-light: #163a5c;
            --primary-dark: #091c2f;
            --accent: #c8963e;
            --accent-light: #e0b860;
            --accent-glow: rgba(200, 150, 62, 0.25);
            --accent-red: #e63946;
            --accent-red-light: #ff4d5a;
            --accent-green: #2ecc71;
            --bg: #f4f5f7;
            --bg-alt: #eef0f3;
            --surface: #ffffff;
            --surface-darker: #f8f9fb;
            --text: #1a1a2e;
            --text-secondary: #5a6070;
            --text-muted: #8b8f98;
            --text-light: #b0b5be;
            --border: #e4e6ea;
            --border-light: #eef0f3;
            --radius-xs: 6px;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 28px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.03);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow: 0 4px 20px rgba(0,0,0,0.07);
            --shadow-md: 0 8px 32px rgba(0,0,0,0.09);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-xl: 0 24px 64px rgba(0,0,0,0.15);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ============ 基础 Reset 与 Base ============ */
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
        html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px;}
        body{font-family:var(--font-sans);line-height:1.65;color:var(--text);background:var(--bg);min-height:100vh;overflow-x:hidden;}
        a{text-decoration:none;color:inherit;transition:color var(--transition-fast);}
        a:hover{color:var(--accent);}
        img{max-width:100%;height:auto;display:block;}
        button,input,select,textarea{font-family:inherit;font-size:inherit;}
        ul,ol{list-style:none;padding:0;margin:0;}

        /* ============ 容器 ============ */
        .container-custom{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
        @media(min-width:1400px){.container-custom{max-width:1280px;}}

        /* ============ 导航栏 ============ */
        .site-header{position:sticky;top:0;z-index:1050;background:rgba(255,255,255,0.92);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--border-light);box-shadow:0 1px 6px rgba(0,0,0,0.04);transition:box-shadow var(--transition),background var(--transition);}
        .site-header.scrolled{box-shadow:0 4px 20px rgba(0,0,0,0.1);background:rgba(255,255,255,0.97);}
        .navbar-custom{padding:12px 0;display:flex;align-items:center;justify-content:space-between;gap:20px;}
        .navbar-brand-custom{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.2rem;color:var(--primary);white-space:nowrap;transition:color var(--transition-fast);}
        .navbar-brand-custom:hover{color:var(--accent);}
        .navbar-brand-icon{width:38px;height:38px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1.3rem;color:#fff;flex-shrink:0;box-shadow:0 3px 12px rgba(15,43,70,0.25);}
        .navbar-live-badge{display:inline-flex;align-items:center;gap:5px;background:var(--accent-red);color:#fff;font-size:0.72rem;font-weight:700;padding:3px 10px;border-radius:20px;letter-spacing:0.5px;animation:livePulse 1.8s ease-in-out infinite;}
        .navbar-live-badge .live-dot{width:7px;height:7px;background:#fff;border-radius:50%;flex-shrink:0;}
        @keyframes livePulse{0%,100%{opacity:1;}50%{opacity:0.7;}}
        .navbar-nav-custom{display:flex;align-items:center;gap:6px;}
        .nav-link-custom{display:inline-flex;align-items:center;padding:8px 16px;border-radius:var(--radius-sm);font-weight:500;font-size:0.95rem;color:var(--text-secondary);transition:all var(--transition-fast);position:relative;}
        .nav-link-custom:hover,.nav-link-custom.active{color:var(--primary);background:rgba(15,43,70,0.05);}
        .nav-link-custom.active{font-weight:600;}
        .nav-cta-btn{display:inline-flex;align-items:center;gap:7px;padding:10px 22px;background:linear-gradient(135deg,var(--accent-red),var(--accent-red-light));color:#fff;font-weight:600;font-size:0.9rem;border-radius:var(--radius);border:none;cursor:pointer;transition:all var(--transition);white-space:nowrap;box-shadow:0 4px 16px rgba(230,57,70,0.3);text-decoration:none;}
        .nav-cta-btn:hover{transform:translateY(-1px);box-shadow:0 8px 28px rgba(230,57,70,0.4);color:#fff;filter:brightness(1.08);}
        .nav-cta-btn:active{transform:translateY(0);box-shadow:0 2px 8px rgba(230,57,70,0.3);}
        .navbar-toggler-custom{border:none;background:transparent;padding:8px;cursor:pointer;display:none;flex-direction:column;gap:5px;justify-content:center;align-items:center;width:40px;height:40px;border-radius:var(--radius-sm);transition:background var(--transition-fast);}
        .navbar-toggler-custom:hover{background:rgba(15,43,70,0.05);}
        .navbar-toggler-custom span{display:block;width:22px;height:2px;background:var(--primary);border-radius:2px;transition:all var(--transition);}
        .navbar-toggler-custom.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px);}
        .navbar-toggler-custom.open span:nth-child(2){opacity:0;}
        .navbar-toggler-custom.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px);}
        @media(max-width:768px){
            .navbar-toggler-custom{display:flex;}
            .navbar-nav-custom{position:absolute;top:100%;left:0;right:0;flex-direction:column;background:#fff;padding:16px;gap:2px;border-top:1px solid var(--border-light);box-shadow:var(--shadow-md);border-radius:0 0 var(--radius-lg) var(--radius-lg);display:none;z-index:1040;}
            .navbar-nav-custom.show{display:flex;}
            .nav-link-custom{width:100%;padding:12px 16px;border-radius:var(--radius-sm);}
            .nav-cta-btn{width:100%;justify-content:center;margin-top:8px;}
            .navbar-brand-custom{font-size:1rem;}
            .navbar-brand-icon{width:32px;height:32px;font-size:1.1rem;}
        }
        @media(max-width:520px){
            .navbar-live-badge{font-size:0.68rem;padding:2px 8px;}
            .navbar-brand-custom{font-size:0.9rem;gap:6px;}
            .container-custom{padding-left:14px;padding-right:14px;}
        }

        /* ============ Hero 首屏 ============ */
        .hero-section{position:relative;background:linear-gradient(155deg,#091c2f 0%,#0f2b46 35%,#132f4c 60%,#0a1e33 100%);padding:80px 0 90px;overflow:hidden;color:#fff;}
        .hero-section::before{content:'';position:absolute;top:-120px;right:-100px;width:500px;height:500px;background:radial-gradient(circle,rgba(200,150,62,0.12) 0%,transparent 70%);border-radius:50%;pointer-events:none;}
        .hero-section::after{content:'';position:absolute;bottom:-80px;left:-60px;width:380px;height:380px;background:radial-gradient(circle,rgba(200,150,62,0.08) 0%,transparent 70%);border-radius:50%;pointer-events:none;}
        .hero-particles{position:absolute;inset:0;pointer-events:none;overflow:hidden;}
        .hero-particle{position:absolute;width:2px;height:2px;background:rgba(255,255,255,0.15);border-radius:50%;}
        .hero-inner{position:relative;z-index:2;display:flex;align-items:center;gap:50px;flex-wrap:wrap;}
        .hero-content{flex:1;min-width:280px;}
        .hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,0.1);border:1px solid rgba(255,255,255,0.2);color:#f0d78c;font-size:0.85rem;font-weight:600;padding:6px 16px;border-radius:24px;margin-bottom:20px;letter-spacing:0.5px;}
        .hero-badge .badge-dot{width:8px;height:8px;background:var(--accent-green);border-radius:50%;animation:livePulse 1.5s ease-in-out infinite;}
        .hero-title{font-size:2.8rem;font-weight:800;line-height:1.2;margin-bottom:16px;letter-spacing:-0.02em;color:#fff;}
        .hero-title .highlight{color:var(--accent-light);position:relative;}
        .hero-desc{font-size:1.15rem;line-height:1.7;color:rgba(255,255,255,0.75);margin-bottom:28px;max-width:520px;}
        .hero-cta-group{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
        .btn-hero-primary{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;background:linear-gradient(135deg,var(--accent-red),#ff525d);color:#fff;font-weight:700;font-size:1rem;border-radius:var(--radius);border:none;cursor:pointer;transition:all var(--transition);box-shadow:0 8px 28px rgba(230,57,70,0.4);text-decoration:none;white-space:nowrap;}
        .btn-hero-primary:hover{transform:translateY(-2px);box-shadow:0 14px 38px rgba(230,57,70,0.5);color:#fff;filter:brightness(1.06);}
        .btn-hero-primary:active{transform:translateY(0);}
        .btn-hero-outline{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;background:transparent;color:#fff;font-weight:600;font-size:1rem;border-radius:var(--radius);border:2px solid rgba(255,255,255,0.35);cursor:pointer;transition:all var(--transition);text-decoration:none;white-space:nowrap;}
        .btn-hero-outline:hover{background:rgba(255,255,255,0.08);border-color:rgba(255,255,255,0.6);color:#fff;}
        .hero-visual{flex:0 0 380px;min-width:280px;display:flex;align-items:center;justify-content:center;}
        .hero-card-visual{background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.15);border-radius:var(--radius-xl);padding:28px 24px;width:100%;max-width:380px;backdrop-filter:blur(8px);}
        .hero-match-teams{display:flex;align-items:center;justify-content:space-around;gap:16px;margin-bottom:18px;}
        .hero-team{text-align:center;flex:1;}
        .hero-team-flag{font-size:3rem;display:block;margin-bottom:6px;}
        .hero-team-name{font-size:0.9rem;font-weight:600;color:rgba(255,255,255,0.85);}
        .hero-vs{font-size:1.4rem;font-weight:800;color:var(--accent-light);flex-shrink:0;}
        .hero-match-info{text-align:center;padding-top:14px;border-top:1px solid rgba(255,255,255,0.12);}
        .hero-match-status{display:inline-flex;align-items:center;gap:6px;font-size:0.85rem;font-weight:600;color:var(--accent-green);}
        .hero-match-status .status-dot{width:8px;height:8px;background:var(--accent-green);border-radius:50%;animation:livePulse 1.3s ease-in-out infinite;}
        .hero-match-time{font-size:0.8rem;color:rgba(255,255,255,0.5);margin-top:4px;}
        @media(max-width:1024px){
            .hero-title{font-size:2.2rem;}
            .hero-visual{flex:0 0 320px;}
        }
        @media(max-width:768px){
            .hero-section{padding:50px 0 60px;}
            .hero-inner{flex-direction:column;gap:36px;}
            .hero-content{text-align:center;}
            .hero-desc{margin:0 auto 24px;max-width:100%;}
            .hero-cta-group{justify-content:center;}
            .hero-title{font-size:1.9rem;}
            .hero-visual{flex:0 0 auto;width:100%;}
            .hero-card-visual{max-width:320px;margin:0 auto;}
        }
        @media(max-width:520px){
            .hero-title{font-size:1.55rem;}
            .hero-desc{font-size:1rem;}
            .btn-hero-primary,.btn-hero-outline{padding:12px 20px;font-size:0.9rem;width:100%;justify-content:center;}
            .hero-cta-group{flex-direction:column;width:100%;}
            .hero-section{padding:36px 0 48px;}
        }

        /* ============ 板块通用 ============ */
        .section{padding:70px 0;}
        .section-header{text-align:center;margin-bottom:48px;}
        .section-label{display:inline-block;font-size:0.82rem;font-weight:700;text-transform:uppercase;letter-spacing:1.5px;color:var(--accent);margin-bottom:10px;}
        .section-title{font-size:2rem;font-weight:700;color:var(--text);margin-bottom:10px;letter-spacing:-0.01em;}
        .section-subtitle{font-size:1.05rem;color:var(--text-secondary);max-width:600px;margin:0 auto;}
        .section-alt{background:var(--surface-darker);}
        .section-dark{background:var(--primary);color:#fff;}

        /* ============ 核心优势板块 ============ */
        .advantages-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
        .advantage-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:30px 22px;text-align:center;transition:all var(--transition);position:relative;overflow:hidden;cursor:default;}
        .advantage-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));transform:scaleX(0);transition:transform var(--transition-slow);transform-origin:left;}
        .advantage-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:transparent;}
        .advantage-card:hover::before{transform:scaleX(1);}
        .advantage-icon{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;background:rgba(15,43,70,0.06);border-radius:50%;font-size:1.5rem;color:var(--primary);margin-bottom:16px;transition:all var(--transition);}
        .advantage-card:hover .advantage-icon{background:var(--primary);color:#fff;transform:scale(1.08);box-shadow:0 6px 20px rgba(15,43,70,0.3);}
        .advantage-title{font-weight:700;font-size:1.05rem;margin-bottom:8px;color:var(--text);}
        .advantage-desc{font-size:0.9rem;color:var(--text-secondary);line-height:1.6;}
        @media(max-width:1024px){.advantages-grid{grid-template-columns:repeat(2,1fr);}}
        @media(max-width:520px){.advantages-grid{grid-template-columns:1fr;}}

        /* ============ 即将直播板块 ============ */
        .matches-list{display:flex;flex-direction:column;gap:14px;}
        .match-card{display:flex;align-items:center;justify-content:space-between;gap:20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 22px;transition:all var(--transition);flex-wrap:wrap;}
        .match-card:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateX(2px);}
        .match-card-teams{display:flex;align-items:center;gap:14px;flex:1;min-width:200px;}
        .match-team{font-weight:600;font-size:0.95rem;color:var(--text);display:flex;align-items:center;gap:8px;}
        .match-team-flag{font-size:1.6rem;}
        .match-vs{font-weight:700;color:var(--text-muted);font-size:0.85rem;flex-shrink:0;}
        .match-card-meta{display:flex;align-items:center;gap:14px;flex-shrink:0;}
        .match-time{font-size:0.88rem;color:var(--text-secondary);white-space:nowrap;}
        .match-status-tag{display:inline-flex;align-items:center;gap:5px;font-size:0.78rem;font-weight:600;padding:5px 12px;border-radius:20px;white-space:nowrap;}
        .match-status-tag.live{background:#ffeaea;color:var(--accent-red);}
        .match-status-tag.live .tag-dot{width:7px;height:7px;background:var(--accent-red);border-radius:50%;animation:livePulse 1.2s ease-in-out infinite;}
        .match-status-tag.upcoming{background:#eef6ff;color:#2563eb;}
        .match-status-tag.soon{background:#fff8ed;color:#d97706;}
        .btn-match-watch{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;background:var(--primary);color:#fff;font-weight:600;font-size:0.85rem;border-radius:var(--radius-sm);border:none;cursor:pointer;transition:all var(--transition);white-space:nowrap;text-decoration:none;}
        .btn-match-watch:hover{background:var(--accent-red);color:#fff;transform:translateY(-1px);box-shadow:0 4px 14px rgba(230,57,70,0.35);}
        @media(max-width:768px){
            .match-card{flex-direction:column;align-items:flex-start;gap:12px;padding:16px;}
            .match-card-teams{width:100%;}
            .match-card-meta{width:100%;justify-content:space-between;flex-wrap:wrap;}
        }
        @media(max-width:520px){
            .match-card-teams{flex-wrap:wrap;gap:8px;}
            .match-card-meta{flex-direction:column;align-items:flex-start;gap:8px;}
            .btn-match-watch{width:100%;justify-content:center;}
        }

        /* ============ 观看流程板块 ============ */
        .steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
        .step-card{text-align:center;position:relative;padding:28px 18px;}
        .step-number{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;background:var(--primary);color:#fff;font-weight:700;font-size:1.2rem;border-radius:50%;margin-bottom:16px;position:relative;z-index:2;box-shadow:0 4px 14px rgba(15,43,70,0.3);}
        .step-card::after{content:'';position:absolute;top:50px;left:calc(50% + 28px);width:calc(100% - 56px);height:2px;background:var(--border);z-index:1;display:none;}
        .step-card:last-child::after{display:none;}
        .step-title{font-weight:700;font-size:1rem;margin-bottom:6px;color:var(--text);}
        .step-desc{font-size:0.88rem;color:var(--text-secondary);line-height:1.5;}
        @media(min-width:769px){.steps-grid{position:relative;}.step-card::after{display:block;}}
        @media(max-width:1024px){.steps-grid{grid-template-columns:repeat(2,1fr);}}
        @media(max-width:520px){.steps-grid{grid-template-columns:1fr;}.step-card{padding:20px 10px;}}

        /* ============ 数据统计板块 ============ */
        .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
        .stat-card{background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);border-radius:var(--radius-lg);padding:30px 20px;text-align:center;transition:all var(--transition);}
        .stat-card:hover{background:rgba(255,255,255,0.1);transform:translateY(-4px);box-shadow:0 12px 36px rgba(0,0,0,0.2);}
        .stat-number{font-size:2.4rem;font-weight:800;color:var(--accent-light);line-height:1;margin-bottom:8px;}
        .stat-label{font-size:0.9rem;color:rgba(255,255,255,0.7);font-weight:500;}
        @media(max-width:1024px){.stats-grid{grid-template-columns:repeat(2,1fr);}}
        @media(max-width:520px){.stats-grid{grid-template-columns:1fr;}.stat-number{font-size:2rem;}}

        /* ============ 热门推荐板块 ============ */
        .featured-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
        .featured-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition);cursor:pointer;}
        .featured-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:transparent;}
        .featured-card-img-wrap{position:relative;height:180px;background:linear-gradient(135deg,#e8ecf1,#dde2e8);display:flex;align-items:center;justify-content:center;overflow:hidden;}
        .featured-card-img-wrap .match-preview{text-align:center;z-index:2;}
        .featured-card-img-wrap .match-preview-flags{font-size:2.8rem;display:flex;align-items:center;justify-content:center;gap:16px;}
        .featured-card-img-wrap .match-preview-vs{font-size:1rem;font-weight:700;color:var(--text-muted);}
        .featured-card-img-wrap .overlay-tag{position:absolute;top:14px;right:14px;z-index:3;background:var(--accent-red);color:#fff;font-size:0.75rem;font-weight:700;padding:4px 10px;border-radius:4px;}
        .featured-card-body{padding:18px;}
        .featured-card-title{font-weight:700;font-size:1rem;margin-bottom:6px;color:var(--text);}
        .featured-card-info{font-size:0.85rem;color:var(--text-secondary);display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
        .featured-card-info .info-item{display:flex;align-items:center;gap:4px;}
        @media(max-width:1024px){.featured-grid{grid-template-columns:repeat(2,1fr);}}
        @media(max-width:520px){.featured-grid{grid-template-columns:1fr;}}

        /* ============ FAQ板块 ============ */
        .faq-list{max-width:800px;margin:0 auto;}
        .faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:10px;overflow:hidden;background:var(--surface);transition:all var(--transition-fast);}
        .faq-item:hover{border-color:#cdd1d8;}
        .faq-question{padding:18px 22px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:12px;font-weight:600;font-size:0.98rem;color:var(--text);user-select:none;transition:background var(--transition-fast);}
        .faq-question:hover{background:rgba(15,43,70,0.02);}
        .faq-question .faq-icon{flex-shrink:0;font-size:0.85rem;color:var(--text-muted);transition:transform var(--transition);}
        .faq-item.open .faq-question .faq-icon{transform:rotate(180deg);color:var(--accent);}
        .faq-answer{padding:0 22px;max-height:0;overflow:hidden;transition:all var(--transition);color:var(--text-secondary);font-size:0.92rem;line-height:1.7;}
        .faq-item.open .faq-answer{padding:0 22px 18px;max-height:300px;}
        @media(max-width:520px){.faq-question{font-size:0.9rem;padding:16px;}.faq-answer{padding:0 16px;}}

        /* ============ CTA横幅板块 ============ */
        .cta-banner{position:relative;background:linear-gradient(135deg,#0f2b46 0%,#163a5c 50%,#0f2b46 100%);border-radius:var(--radius-2xl);padding:56px 40px;text-align:center;color:#fff;overflow:hidden;margin:0 20px;}
        .cta-banner::before{content:'';position:absolute;top:-60px;right:-60px;width:240px;height:240px;background:radial-gradient(circle,rgba(200,150,62,0.18) 0%,transparent 70%);border-radius:50%;pointer-events:none;}
        .cta-banner::after{content:'';position:absolute;bottom:-40px;left:-40px;width:200px;height:200px;background:radial-gradient(circle,rgba(200,150,62,0.1) 0%,transparent 70%);border-radius:50%;pointer-events:none;}
        .cta-banner-inner{position:relative;z-index:2;}
        .cta-banner-title{font-size:1.8rem;font-weight:700;margin-bottom:10px;}
        .cta-banner-desc{font-size:1.05rem;color:rgba(255,255,255,0.7);margin-bottom:24px;max-width:500px;margin-left:auto;margin-right:auto;}
        .btn-cta-large{display:inline-flex;align-items:center;gap:8px;padding:16px 40px;background:linear-gradient(135deg,var(--accent-red),#ff525d);color:#fff;font-weight:700;font-size:1.05rem;border-radius:var(--radius);border:none;cursor:pointer;transition:all var(--transition);box-shadow:0 10px 32px rgba(230,57,70,0.45);text-decoration:none;}
        .btn-cta-large:hover{transform:translateY(-3px);box-shadow:0 16px 44px rgba(230,57,70,0.55);color:#fff;filter:brightness(1.05);}
        .btn-cta-large:active{transform:translateY(-1px);}
        @media(max-width:768px){.cta-banner{padding:40px 22px;margin:0 14px;border-radius:var(--radius-xl);}.cta-banner-title{font-size:1.4rem;}}
        @media(max-width:520px){.cta-banner{padding:32px 16px;margin:0 8px;border-radius:var(--radius-lg);}.btn-cta-large{width:100%;justify-content:center;padding:14px 24px;font-size:0.95rem;}}

        /* ============ 页脚 ============ */
        .site-footer{background:var(--primary-dark);color:rgba(255,255,255,0.6);padding:44px 0 28px;}
        .footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:20px;}
        .footer-brand{display:flex;align-items:center;gap:8px;font-weight:700;color:#fff;font-size:1rem;}
        .footer-brand-icon{width:30px;height:30px;background:rgba(255,255,255,0.1);border-radius:var(--radius-xs);display:flex;align-items:center;justify-content:center;font-size:0.9rem;}
        .footer-links{display:flex;gap:20px;flex-wrap:wrap;align-items:center;}
        .footer-links a{color:rgba(255,255,255,0.5);font-size:0.88rem;transition:color var(--transition-fast);}
        .footer-links a:hover{color:#fff;}
        .footer-copyright{font-size:0.82rem;color:rgba(255,255,255,0.35);text-align:center;width:100%;padding-top:20px;border-top:1px solid rgba(255,255,255,0.08);margin-top:8px;}
        @media(max-width:768px){.footer-inner{flex-direction:column;text-align:center;}.footer-links{justify-content:center;}}
        @media(max-width:520px){.site-footer{padding:32px 0 20px;}.footer-links{gap:14px;font-size:0.82rem;}}

        /* ============ 通用工具类 ============ */
        .text-accent{color:var(--accent);}
        .text-muted{color:var(--text-secondary);}
        .mb-0{margin-bottom:0;}
        .mt-0{margin-top:0;}

        /* ============ 倒计时工具 ============ */
        .countdown-bar{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:center;padding:14px 20px;background:rgba(255,255,255,0.07);border-radius:var(--radius);margin-top:20px;border:1px solid rgba(255,255,255,0.1);}
        .countdown-item{text-align:center;min-width:50px;}
        .countdown-value{font-size:1.6rem;font-weight:800;color:var(--accent-light);line-height:1;}
        .countdown-label{font-size:0.72rem;color:rgba(255,255,255,0.5);text-transform:uppercase;letter-spacing:0.5px;margin-top:2px;}
        .countdown-separator{font-size:1.2rem;color:rgba(255,255,255,0.4);font-weight:300;}
        @media(max-width:520px){.countdown-bar{gap:8px;padding:12px 10px;}.countdown-value{font-size:1.2rem;}.countdown-item{min-width:38px;}}

        /* ============ 覆盖Bootstrap默认样式 ============ */
        .btn:focus{box-shadow:none;}
        .accordion-button:focus{box-shadow:none;}

        /* ============ 辅助动画 ============ */
        @keyframes fadeInUp{from{opacity:0;transform:translateY(24px);}to{opacity:1;transform:translateY(0);}}
        .animate-fade-in-up{animation:fadeInUp 0.6s ease-out 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;}
        .animate-delay-4{animation-delay:0.4s;opacity:0;}