/* roulang page: index */
:root {
            --color-primary: #E63946;
            --color-primary-dark: #C72834;
            --color-accent: #F4A261;
            --color-bg: #0B0E14;
            --color-card: #1A1E26;
            --color-title: #F8F9FA;
            --color-body: #B0B5C0;
            --color-white: #FFFFFF;
            --color-border: rgba(255, 255, 255, 0.05);
            --color-nav-glass: rgba(11, 14, 20, 0.82);
            --radius-card: 16px;
            --radius-btn: 8px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
            --shadow-elevated: 0 8px 40px rgba(0, 0, 0, 0.45);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Inter', system-ui, -apple-system, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-body);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 640px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: all var(--transition-smooth);
            background: transparent;
            backdrop-filter: none;
            -webkit-backdrop-filter: none;
        }

        .site-header.scrolled {
            background: var(--color-nav-glass);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.35);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--color-white);
            letter-spacing: 0.02em;
            white-space: nowrap;
            z-index: 1001;
            transition: color var(--transition-smooth);
        }
        .header-logo .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--color-primary);
            border-radius: 10px;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .header-logo .logo-sub {
            font-size: 0.65rem;
            font-weight: 500;
            color: var(--color-body);
            letter-spacing: 0.06em;
            display: block;
            line-height: 1;
            margin-top: 1px;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-desktop a {
            color: rgba(255, 255, 255, 0.78);
            font-weight: 500;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
            padding: 8px 0;
            position: relative;
            transition: color var(--transition-smooth);
            white-space: nowrap;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
            transition: width var(--transition-smooth);
        }
        .nav-desktop a:hover,
        .nav-desktop a:focus-visible {
            color: #fff;
        }
        .nav-desktop a:hover::after,
        .nav-desktop a:focus-visible::after {
            width: 100%;
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            background: var(--color-primary);
            color: #fff !important;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-smooth);
            min-height: 44px;
            white-space: nowrap;
            border: none;
        }
        .nav-cta-btn:hover {
            background: var(--color-primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.35);
        }

        /* 汉堡按钮 */
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            padding: 10px;
            z-index: 1001;
            cursor: pointer;
            color: #fff;
            width: 48px;
            height: 48px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            border-radius: 8px;
            transition: background var(--transition-smooth);
        }
        .hamburger-btn:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .hamburger-btn span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition-smooth);
            transform-origin: center;
        }
        .hamburger-btn.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .hamburger-btn.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger-btn.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* 移动端全屏菜单 */
        .mobile-menu-overlay {
            position: fixed;
            inset: 0;
            z-index: 999;
            background: rgba(11, 14, 20, 0.96);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-smooth);
        }
        .mobile-menu-overlay.active {
            opacity: 1;
            pointer-events: all;
        }
        .mobile-menu-overlay a {
            font-size: 1.4rem;
            font-weight: 600;
            color: #fff;
            letter-spacing: 0.03em;
            padding: 12px 24px;
            transition: color var(--transition-smooth);
            text-align: center;
        }
        .mobile-menu-overlay a:hover {
            color: var(--color-primary);
        }
        .mobile-menu-overlay .mobile-cta {
            display: inline-block;
            margin-top: 16px;
            padding: 14px 36px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 1.1rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
        }
        .mobile-menu-overlay .mobile-cta:hover {
            background: var(--color-primary-dark);
            transform: scale(1.03);
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .hamburger-btn {
                display: flex;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            background: var(--color-bg);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-position: center 30%;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(180deg, rgba(11, 14, 20, 0.55) 0%, rgba(11, 14, 20, 0.82) 40%, rgba(11, 14, 20, 0.94) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 120px 24px 80px;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(230, 57, 70, 0.18);
            border: 1px solid rgba(230, 57, 70, 0.35);
            color: #ff8a8a;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }
        .hero-title {
            font-size: clamp(2.2rem, 5vw, 4rem);
            font-weight: 700;
            color: var(--color-white);
            line-height: 1.15;
            letter-spacing: -0.01em;
            margin: 0 0 18px;
        }
        .hero-title .highlight {
            color: var(--color-primary);
            position: relative;
        }
        .hero-subtitle {
            font-size: clamp(1rem, 1.8vw, 1.2rem);
            font-weight: 400;
            color: var(--color-body);
            line-height: 1.6;
            margin: 0 0 36px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.03em;
            border: none;
            cursor: pointer;
            transition: all var(--transition-smooth);
            min-height: 50px;
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(230, 57, 70, 0.4);
        }
        .btn-primary::after {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: var(--radius-btn);
            border: 2px solid var(--color-primary);
            opacity: 0;
            animation: pulse-ring 2.4s ease-out infinite;
        }
        @keyframes pulse-ring {
            0%,
            100% {
                opacity: 0;
                transform: scale(1);
            }
            15% {
                opacity: 0.55;
            }
            50% {
                opacity: 0;
                transform: scale(1.08);
            }
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            background: transparent;
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.03em;
            border: 1.5px solid rgba(255, 255, 255, 0.4);
            cursor: pointer;
            transition: all var(--transition-smooth);
            min-height: 50px;
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: #fff;
            color: var(--color-bg);
            border-color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.15);
        }

        /* 悬浮比分卡片 */
        .score-float-card {
            position: absolute;
            right: clamp(16px, 4vw, 60px);
            bottom: clamp(80px, 12vh, 160px);
            z-index: 3;
            background: rgba(26, 30, 38, 0.88);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 14px;
            padding: 16px 20px;
            color: #fff;
            display: flex;
            flex-direction: column;
            gap: 10px;
            min-width: 200px;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
            animation: float-card 4s ease-in-out infinite;
            pointer-events: none;
            user-select: none;
        }
        @keyframes float-card {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-10px);
            }
        }
        .score-float-card .live-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            background: #ff3b3b;
            border-radius: 50%;
            animation: live-pulse 1.2s ease-in-out infinite;
            margin-right: 6px;
        }
        @keyframes live-pulse {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 0 0 rgba(255, 59, 59, 0.7);
            }
            50% {
                opacity: 0.4;
                box-shadow: 0 0 0 10px rgba(255, 59, 59, 0);
            }
        }
        .score-float-card .score-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.02em;
        }
        .score-float-card .team-name {
            font-size: 0.8rem;
            font-weight: 500;
            color: #B0B5C0;
        }
        .score-float-card .vs-badge {
            font-size: 0.7rem;
            color: var(--color-accent);
            font-weight: 600;
            text-align: center;
        }
        @media (max-width: 768px) {
            .score-float-card {
                right: 12px;
                bottom: 60px;
                padding: 12px 16px;
                min-width: 160px;
                border-radius: 10px;
                gap: 6px;
            }
            .score-float-card .score-row {
                font-size: 1.1rem;
            }
            .score-float-card .team-name {
                font-size: 0.7rem;
            }
        }
        @media (max-width: 480px) {
            .score-float-card {
                display: none;
            }
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: 80px 0;
            position: relative;
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 56px 0;
            }
        }
        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-primary);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 700;
            color: var(--color-title);
            line-height: 1.25;
            margin: 0 0 14px;
            letter-spacing: -0.01em;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--color-body);
            line-height: 1.7;
            max-width: 600px;
            margin: 0 auto 40px;
        }

        /* ===== 功能区块 - 非对称布局 ===== */
        .features-asymmetric {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            align-items: start;
        }
        .features-left {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .features-right {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .feature-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            border: 1px solid var(--color-border);
            transition: all var(--transition-bounce);
            position: relative;
            overflow: hidden;
            cursor: default;
            box-shadow: var(--shadow-card);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-primary);
            box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-elevated);
        }
        .feature-card .fc-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .fc-icon.icon-red {
            background: rgba(230, 57, 70, 0.25);
            color: #ff7070;
        }
        .fc-icon.icon-gold {
            background: rgba(244, 162, 97, 0.2);
            color: var(--color-accent);
        }
        .fc-icon.icon-blue {
            background: rgba(96, 165, 250, 0.2);
            color: #93c5fd;
        }
        .fc-icon.icon-green {
            background: rgba(74, 222, 128, 0.2);
            color: #86efac;
        }
        .fc-icon.icon-purple {
            background: rgba(192, 132, 252, 0.2);
            color: #c4b5fd;
        }
        .fc-icon.icon-cyan {
            background: rgba(34, 211, 238, 0.2);
            color: #67e8f9;
        }
        .feature-card .fc-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-title);
            margin: 0 0 8px;
            letter-spacing: 0.01em;
        }
        .feature-card .fc-desc {
            font-size: 0.9rem;
            color: var(--color-body);
            line-height: 1.6;
            margin: 0;
        }
        .feature-card.large-card {
            padding: 36px 28px;
        }
        .feature-card.large-card .fc-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            font-size: 1.7rem;
            margin-bottom: 20px;
        }
        .feature-card.large-card .fc-title {
            font-size: 1.35rem;
        }
        .feature-card.large-card .fc-desc {
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            .features-asymmetric {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .features-right {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .feature-card.large-card {
                padding: 24px 20px;
            }
            .feature-card {
                padding: 22px 18px;
            }
        }

        /* ===== 场景横向滚动 ===== */
        .scenarios-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 8px;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .scenarios-scroll::-webkit-scrollbar {
            display: none;
        }
        .scenario-card {
            flex: 0 0 300px;
            scroll-snap-align: start;
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: all var(--transition-bounce);
            box-shadow: var(--shadow-card);
            cursor: default;
        }
        .scenario-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.18);
            box-shadow: var(--shadow-elevated);
        }
        .scenario-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .scenario-card .sc-info {
            padding: 18px 16px;
        }
        .scenario-card .sc-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-title);
            margin: 0 0 6px;
        }
        .scenario-card .sc-desc {
            font-size: 0.85rem;
            color: var(--color-body);
            line-height: 1.5;
            margin: 0;
        }
        @media (max-width: 640px) {
            .scenario-card {
                flex: 0 0 260px;
            }
            .scenario-card img {
                height: 160px;
            }
        }

        /* ===== 案例数字 ===== */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .case-stat {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 32px 20px;
            border: 1px solid var(--color-border);
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }
        .case-stat:hover {
            transform: translateY(-3px);
            border-color: rgba(255, 255, 255, 0.12);
            box-shadow: var(--shadow-elevated);
        }
        .case-stat .stat-number {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            font-variant-numeric: tabular-nums;
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .case-stat .stat-label {
            font-size: 0.9rem;
            color: var(--color-body);
            font-weight: 500;
        }
        .case-logos {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
            align-items: center;
            margin-top: 36px;
            opacity: 0.7;
        }
        .case-logo-placeholder {
            width: 90px;
            height: 40px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            color: #666;
            letter-spacing: 0.05em;
            transition: all var(--transition-smooth);
        }
        .case-logo-placeholder:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #999;
        }
        @media (max-width: 768px) {
            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .case-stat {
                padding: 22px 14px;
            }
        }
        @media (max-width: 480px) {
            .cases-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
        }

        /* ===== 价格表 ===== */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: stretch;
        }
        .pricing-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            border: 1px solid var(--color-border);
            text-align: center;
            transition: all var(--transition-bounce);
            box-shadow: var(--shadow-card);
            position: relative;
            display: flex;
            flex-direction: column;
        }
        .pricing-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-elevated);
        }
        .pricing-card.recommended {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-elevated);
            background: linear-gradient(180deg, rgba(230, 57, 70, 0.08) 0%, var(--color-card) 25%);
        }
        .pricing-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-primary);
            color: #fff;
            padding: 5px 18px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            white-space: nowrap;
        }
        .pricing-card .plan-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-title);
            margin: 0 0 6px;
            letter-spacing: 0.02em;
        }
        .pricing-card .plan-price {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin: 12px 0 4px;
        }
        .pricing-card .plan-price .unit {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-body);
        }
        .pricing-card .plan-desc {
            font-size: 0.85rem;
            color: var(--color-body);
            margin: 0 0 20px;
        }
        .pricing-features {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
            text-align: left;
            flex-grow: 1;
        }
        .pricing-features li {
            padding: 8px 0;
            font-size: 0.9rem;
            color: var(--color-body);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .pricing-features li .check-icon {
            color: #4ade80;
            flex-shrink: 0;
            margin-top: 2px;
            font-size: 0.85rem;
        }
        .pricing-card .btn-plan {
            display: block;
            width: 100%;
            padding: 13px 20px;
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            cursor: pointer;
            transition: all var(--transition-smooth);
            min-height: 48px;
            text-align: center;
        }
        .pricing-card .btn-plan:hover {
            background: #fff;
            color: var(--color-bg);
            border-color: #fff;
        }
        .pricing-card.recommended .btn-plan {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #fff;
            font-weight: 700;
        }
        .pricing-card.recommended .btn-plan:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            color: #fff;
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.35);
        }
        @media (max-width: 900px) {
            .pricing-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                max-width: 440px;
                margin: 0 auto;
            }
            .pricing-card {
                padding: 28px 20px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-card);
            border-radius: 12px;
            border: 1px solid var(--color-border);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.12);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-title);
            letter-spacing: 0.01em;
            transition: color var(--transition-smooth);
            font-family: inherit;
            min-height: 56px;
            line-height: 1.4;
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: var(--color-body);
            transition: all var(--transition-smooth);
        }
        .faq-item.open .faq-question .faq-icon {
            background: rgba(230, 57, 70, 0.2);
            color: var(--color-primary);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-in-out, padding 0.35s ease-in-out;
            padding: 0 20px;
            font-size: 0.9rem;
            color: var(--color-body);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }
        .faq-sport-icon {
            display: inline-block;
            margin-right: 8px;
            font-size: 1.1rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #080b10;
            border-top: 1px solid #222;
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: flex-start;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
            margin-bottom: 6px;
        }
        .footer-brand .footer-sub {
            font-size: 0.75rem;
            color: #666;
            letter-spacing: 0.05em;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links a {
            color: #888;
            font-size: 0.9rem;
            transition: color var(--transition-smooth);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social .social-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #888;
            transition: all var(--transition-smooth);
            font-size: 1rem;
        }
        .footer-social .social-icon:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #1a1d24;
            font-size: 0.8rem;
            color: #555;
            letter-spacing: 0.03em;
        }
        @media (max-width: 640px) {
            .footer-grid {
                flex-direction: column;
                align-items: center;
                text-align: center;
                gap: 20px;
            }
            .footer-links {
                justify-content: center;
                gap: 14px;
            }
        }

        /* ===== 背景纹理区块 ===== */
        .bg-texture-subtle {
            background-color: #0d1117;
            background-image: radial-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px);
            background-size: 30px 30px;
        }

        /* ===== 分隔装饰 ===== */
        .section-divider {
            width: 60px;
            height: 3px;
            background: var(--color-primary);
            border-radius: 2px;
            margin: 0 auto 24px;
        }

        /* ===== 可访问性 ===== */
        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }