/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --primary: #2C5F8A;
            --primary-dark: #1F4A6B;
            --primary-light: #E8F0F7;
            --accent: #C49A2B;
            --accent-dark: #A07D1F;
            --text-dark: #1E1E1E;
            --text-mid: #5A5A5A;
            --text-light: #8A8A8A;
            --bg-white: #FFFFFF;
            --bg-alt: #F7F9FC;
            --bg-input: #F5F7FA;
            --border: #E0E4E8;
            --border-light: #EEF0F3;
            --shadow-sm: 0 2px 12px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 20px rgba(0,0,0,0.12);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.16);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            --section-pad: 80px;
            --section-pad-mobile: 60px;
            --container-max: 1200px;
            --transition: 0.3s ease;
        }

        /* ========== Reset & Base ========== */
        *, *::before, *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-dark);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, textarea, select {
            font-family: var(--font-stack);
        }
        h1, h2, h3, h4, h5, h6 {
            margin-top: 0;
            color: var(--text-dark);
        }
        h1 {
            font-size: 2.5rem;
            font-weight: 700;
            line-height: 1.2;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            line-height: 1.3;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            line-height: 1.4;
        }
        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }
        ul, ol {
            padding-left: 1.5rem;
        }
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section-padding {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
        }
        @media (max-width: 768px) {
            .section-padding {
                padding-top: var(--section-pad-mobile);
                padding-bottom: var(--section-pad-mobile);
            }
            h1 {
                font-size: 1.85rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
        }

        /* ========== 导航栏 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(0,0,0,0.04);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            height: 64px;
        }
        .nav-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-logo i {
            color: var(--accent);
            font-size: 1.3rem;
        }
        .nav-logo:hover {
            color: var(--primary-dark);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            font-size: 0.95rem;
            color: var(--text-mid);
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--primary);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }
        .nav-cta-btn {
            display: inline-block;
            padding: 9px 22px;
            border: 2px solid var(--accent);
            color: var(--accent) !important;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            background: var(--accent);
            color: #fff !important;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text-dark);
            cursor: pointer;
            padding: 8px;
        }
        @media (max-width: 1024px) {
            .nav-links {
                gap: 16px;
            }
            .nav-links a {
                font-size: 0.85rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                width: 100%;
                background: var(--bg-white);
                flex-direction: column;
                padding: 20px;
                gap: 18px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                font-size: 1rem;
                padding: 8px 0;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-cta-btn {
                text-align: center;
                width: 100%;
            }
        }

        /* ========== Hero 优惠券墙 ========== */
        .hero-coupon-wall {
            position: relative;
            min-height: 82vh;
            background: url('/assets/images/backpic/back-1.jpg') no-repeat center center;
            background-size: cover;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-coupon-wall::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(44,95,138,0.82) 0%, rgba(28,60,85,0.7) 40%, rgba(15,35,50,0.75) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 60px 0;
        }
        .hero-inner {
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }
        .hero-text-col {
            flex: 1;
            min-width: 280px;
        }
        .hero-text-col .hero-badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .hero-text-col h1 {
            color: #fff;
            font-size: 2.8rem;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.25;
            text-shadow: 0 2px 8px rgba(0,0,0,0.3);
        }
        .hero-text-col .hero-subtitle {
            color: rgba(255,255,255,0.88);
            font-size: 1.15rem;
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 520px;
        }
        .hero-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary-hero {
            display: inline-block;
            padding: 14px 32px;
            background: #fff;
            color: var(--primary) !important;
            font-weight: 700;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            text-align: center;
            box-shadow: 0 4px 16px rgba(0,0,0,0.18);
        }
        .btn-primary-hero:hover {
            background: #f0f4f8;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0,0,0,0.25);
        }
        .btn-outline-hero {
            display: inline-block;
            padding: 14px 32px;
            background: transparent;
            color: #fff !important;
            font-weight: 600;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            border: 2px solid rgba(255,255,255,0.7);
            transition: all var(--transition);
            cursor: pointer;
            text-align: center;
        }
        .btn-outline-hero:hover {
            background: rgba(255,255,255,0.12);
            border-color: #fff;
        }
        .hero-coupon-col {
            flex: 0 0 380px;
            min-width: 300px;
        }
        .main-coupon {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            text-align: center;
            box-shadow: var(--shadow-lg);
            position: relative;
            border: 2px dashed var(--accent);
            transition: transform var(--transition);
        }
        .main-coupon:hover {
            transform: translateY(-4px);
        }
        .main-coupon .coupon-ribbon {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: #fff;
            padding: 5px 20px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 1px;
            white-space: nowrap;
        }
        .main-coupon .coupon-amount {
            font-size: 4.5rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
            margin: 10px 0 6px;
        }
        .main-coupon .coupon-amount span {
            font-size: 1.6rem;
            vertical-align: super;
        }
        .main-coupon .coupon-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .main-coupon .coupon-desc {
            font-size: 0.9rem;
            color: var(--text-mid);
            margin-bottom: 16px;
        }
        .main-coupon .coupon-code {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 8px 20px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 2px;
        }
        .main-coupon .btn-claim {
            display: block;
            width: 100%;
            margin-top: 16px;
            padding: 13px;
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition);
            letter-spacing: 1px;
        }
        .main-coupon .btn-claim:hover {
            background: var(--accent-dark);
            box-shadow: var(--shadow-md);
        }
        .side-coupons {
            display: flex;
            gap: 12px;
            margin-top: 16px;
            flex-wrap: wrap;
        }
        .side-coupon {
            flex: 1;
            min-width: 100px;
            background: rgba(255,255,255,0.95);
            border-radius: var(--radius-md);
            padding: 16px 14px;
            text-align: center;
            border: 1px dashed var(--border);
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .side-coupon:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .side-coupon .sc-amount {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
        }
        .side-coupon .sc-label {
            font-size: 0.78rem;
            color: var(--text-mid);
            margin-top: 2px;
        }
        @media (max-width: 768px) {
            .hero-coupon-wall {
                min-height: 60vh;
            }
            .hero-inner {
                flex-direction: column;
                gap: 24px;
            }
            .hero-text-col h1 {
                font-size: 1.9rem;
            }
            .hero-coupon-col {
                flex: 0 0 auto;
                width: 100%;
                min-width: auto;
            }
            .main-coupon .coupon-amount {
                font-size: 3.2rem;
            }
            .side-coupons {
                gap: 8px;
            }
        }

        /* ========== 板块通用标题 ========== */
        .section-title-group {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title-group .section-label {
            display: inline-block;
            color: var(--accent);
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 2px;
            margin-bottom: 8px;
            text-transform: uppercase;
        }
        .section-title-group h2 {
            margin-bottom: 10px;
        }
        .section-title-group .section-desc {
            color: var(--text-mid);
            max-width: 600px;
            margin: 0 auto;
            font-size: 0.95rem;
        }

        /* ========== 倒计时板块 ========== */
        .countdown-section {
            background: var(--bg-alt);
        }
        .countdown-inner {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .countdown-inner .cd-heading {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .countdown-inner .cd-sub {
            color: var(--text-mid);
            margin-bottom: 28px;
            font-size: 0.95rem;
        }
        .countdown-timer {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .cd-item {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 20px 18px;
            min-width: 80px;
            box-shadow: var(--shadow-sm);
            text-align: center;
            border: 1px solid var(--border-light);
        }
        .cd-item .cd-num {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }
        .cd-item .cd-label {
            font-size: 0.8rem;
            color: var(--text-light);
            margin-top: 4px;
            letter-spacing: 1px;
        }
        .cd-expired {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent);
        }
        @media (max-width: 520px) {
            .cd-item {
                min-width: 60px;
                padding: 14px 10px;
            }
            .cd-item .cd-num {
                font-size: 1.8rem;
            }
            .countdown-timer {
                gap: 10px;
            }
        }

        /* ========== 活动亮点墙 ========== */
        .highlights-section {
            background: var(--bg-white);
        }
        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .highlight-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }
        .highlight-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .highlight-card .hl-icon {
            flex-shrink: 0;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
        }
        .highlight-card .hl-info h3 {
            font-size: 1.1rem;
            margin-bottom: 6px;
            font-weight: 600;
        }
        .highlight-card .hl-info p {
            font-size: 0.9rem;
            color: var(--text-mid);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .highlight-card.featured {
            grid-column: span 2;
            flex-direction: row;
            background: var(--primary-light);
            border-color: transparent;
        }
        .highlight-card.featured .hl-icon {
            background: var(--primary);
            color: #fff;
            width: 60px;
            height: 60px;
            font-size: 1.6rem;
        }
        @media (max-width: 1024px) {
            .highlights-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .highlight-card.featured {
                grid-column: span 2;
            }
        }
        @media (max-width: 640px) {
            .highlights-grid {
                grid-template-columns: 1fr;
            }
            .highlight-card.featured {
                grid-column: span 1;
                flex-direction: column;
            }
            .highlight-card {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
        }

        /* ========== 票种对比 / 套餐对比 ========== */
        .pricing-section {
            background: var(--bg-alt);
        }
        .pricing-intro {
            text-align: center;
            max-width: 650px;
            margin: 0 auto 40px;
            color: var(--text-mid);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: start;
        }
        .pricing-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
            position: relative;
        }
        .pricing-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .pricing-card.recommended {
            border: 2px solid var(--accent);
            transform: scale(1.03);
            box-shadow: var(--shadow-md);
            z-index: 2;
        }
        .pricing-card.recommended:hover {
            transform: scale(1.03) translateY(-4px);
        }
        .pricing-card .pricing-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: #fff;
            padding: 5px 18px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 1px;
            white-space: nowrap;
        }
        .pricing-card .pricing-name {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-dark);
        }
        .pricing-card .pricing-price {
            font-size: 2.4rem;
            font-weight: 900;
            color: var(--primary);
            margin: 12px 0;
        }
        .pricing-card .pricing-price span {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-mid);
        }
        .pricing-card .pricing-features {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            text-align: left;
        }
        .pricing-card .pricing-features li {
            padding: 7px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.9rem;
            color: var(--text-mid);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .pricing-card .pricing-features li i {
            color: var(--accent);
            font-size: 0.8rem;
        }
        .pricing-card .btn-pricing {
            display: block;
            width: 100%;
            padding: 12px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--transition);
            border: 2px solid var(--primary);
            background: #fff;
            color: var(--primary);
        }
        .pricing-card .btn-pricing:hover {
            background: var(--primary);
            color: #fff;
        }
        .pricing-card.recommended .btn-pricing {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .pricing-card.recommended .btn-pricing:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
        }
        @media (max-width: 1024px) {
            .pricing-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .pricing-card.recommended {
                transform: scale(1);
                grid-column: span 2;
            }
            .pricing-card.recommended:hover {
                transform: translateY(-4px);
            }
        }
        @media (max-width: 640px) {
            .pricing-grid {
                grid-template-columns: 1fr;
            }
            .pricing-card.recommended {
                grid-column: span 1;
            }
        }

        /* ========== 资讯区 ========== */
        .news-section {
            background: var(--bg-white);
        }
        .news-layout {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 40px;
        }
        .news-list-col .news-item {
            padding: 16px 0;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: baseline;
            gap: 16px;
            transition: all var(--transition);
        }
        .news-list-col .news-item:hover {
            padding-left: 8px;
        }
        .news-list-col .news-date {
            font-size: 0.8rem;
            color: var(--text-light);
            white-space: nowrap;
            min-width: 70px;
        }
        .news-list-col .news-title-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-dark);
            line-height: 1.5;
            transition: color var(--transition);
        }
        .news-list-col .news-title-link:hover {
            color: var(--primary);
        }
        .news-sidebar {
            background: var(--bg-alt);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-light);
        }
        .news-sidebar h3 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            font-weight: 700;
        }
        .news-sidebar .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .news-sidebar .tag-cloud .tag {
            display: inline-block;
            padding: 6px 14px;
            background: #fff;
            border-radius: 20px;
            font-size: 0.82rem;
            color: var(--text-mid);
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
        }
        .news-sidebar .tag-cloud .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        @media (max-width: 768px) {
            .news-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ========== 报名CTA / 联系表单 ========== */
        .cta-section {
            background: var(--bg-alt);
        }
        .cta-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .cta-form-col {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .cta-form-col h3 {
            margin-bottom: 20px;
            font-weight: 700;
        }
        .cta-form-col .form-group {
            margin-bottom: 16px;
        }
        .cta-form-col label {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 5px;
            color: var(--text-dark);
        }
        .cta-form-col input,
        .cta-form-col textarea,
        .cta-form-col select {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            background: var(--bg-input);
            font-size: 0.95rem;
            transition: border-color var(--transition);
            outline: none;
        }
        .cta-form-col input:focus,
        .cta-form-col textarea:focus,
        .cta-form-col select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(44,95,138,0.08);
        }
        .cta-form-col .btn-submit {
            width: 100%;
            padding: 14px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition);
            letter-spacing: 1px;
        }
        .cta-form-col .btn-submit:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-md);
        }
        .cta-info-col {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .cta-info-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }
        .cta-info-card .ci-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--primary);
        }
        .cta-info-card .ci-text h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .cta-info-card .ci-text p {
            font-size: 0.88rem;
            color: var(--text-mid);
            margin-bottom: 0;
        }
        @media (max-width: 768px) {
            .cta-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ========== FAQ 手风琴 ========== */
        .faq-section {
            background: var(--bg-white);
        }
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
            list-style: none;
            padding: 0;
        }
        .faq-accordion .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border-light);
            margin-bottom: 0;
        }
        .faq-accordion .accordion-title {
            display: block;
            padding: 18px 20px 18px 16px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            background: transparent;
            border: none;
            cursor: pointer;
            position: relative;
            transition: all var(--transition);
            border-left: 4px solid transparent;
            text-align: left;
            width: 100%;
            font-family: var(--font-stack);
            line-height: 1.5;
        }
        .faq-accordion .accordion-title:hover {
            color: var(--primary);
            background: #fafbfc;
        }
        .faq-accordion .accordion-title::after {
            content: '+';
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.4rem;
            font-weight: 400;
            color: var(--text-mid);
            transition: transform var(--transition);
        }
        .faq-accordion .accordion-item.is-active .accordion-title {
            border-left-color: var(--primary);
            color: var(--primary);
            background: #fafcfd;
        }
        .faq-accordion .accordion-item.is-active .accordion-title::after {
            content: '−';
            color: var(--primary);
        }
        .faq-accordion .accordion-content {
            padding: 0 20px 18px 20px;
            font-size: 0.93rem;
            color: var(--text-mid);
            line-height: 1.75;
            display: none;
        }
        .faq-accordion .accordion-item.is-active .accordion-content {
            display: block;
        }
        @media (max-width: 640px) {
            .faq-accordion .accordion-title {
                font-size: 0.95rem;
                padding: 14px 36px 14px 12px;
            }
        }

        /* ========== 保障图标条 ========== */
        .guarantee-section {
            background: var(--primary);
            color: #fff;
        }
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }
        .guarantee-item {
            padding: 10px;
        }
        .guarantee-item .gi-icon {
            font-size: 2.2rem;
            margin-bottom: 12px;
            color: var(--accent);
        }
        .guarantee-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }
        .guarantee-item p {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.8);
            margin-bottom: 0;
        }
        @media (max-width: 768px) {
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 480px) {
            .guarantee-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }

        /* ========== 新手入门 ========== */
        .steps-section {
            background: var(--bg-white);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .step-card {
            text-align: center;
            padding: 24px 16px;
            position: relative;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .step-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 900;
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .step-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-card p {
            font-size: 0.85rem;
            color: var(--text-mid);
            margin-bottom: 0;
            line-height: 1.5;
        }
        .step-connector {
            display: none;
        }
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #2C2C2C;
            color: #B0B0B0;
            padding: 50px 0 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .footer-col p {
            font-size: 0.88rem;
            line-height: 1.6;
            margin-bottom: 8px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: #B0B0B0;
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            display: block;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 18px;
            text-align: center;
            font-size: 0.82rem;
            color: #888;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 按钮与交互通用 ========== */
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .text-accent {
            color: var(--accent);
        }
        .text-primary {
            color: var(--primary);
        }

        /* ========== 覆盖Foundation默认 ========== */
        .accordion {
            background: transparent;
        }
        .accordion-item {
            background: transparent;
        }
        .button {
            font-family: var(--font-stack);
        }