/* 由 ks100\computer-guide-import-preset.html 内联 <style> 整体外置（步骤⑩方案A，2026-08-06）
   规则原样迁移，零改写，视觉零回归。 */


        /* 修复页眉菜单上方空白 */
        .ks100-nav a {
            line-height: 56px !important;
        }

        /* ===== 桌面端 ===== */
        @media (min-width: 769px) {
            body {
                margin: 0 !important;
                padding: 0 !important;
                background: var(--bg-page-gradient);
                font-family: var(--font-sans);
                color: var(--guide-ink);
                -webkit-font-smoothing: antialiased;
            }

            header {
                height: 64px !important;
                margin-bottom: 0 !important;
                box-shadow: 0 1px 0 rgba(0,0,0,0.06) !important;
                padding: 0 !important;
                background: rgba(255,255,255,0.85) !important;
                backdrop-filter: saturate(180%) blur(20px);
                position: relative !important;
                z-index: var(--z-card-overlay);
            }

            main {
                padding-top: 0 !important;
                background: transparent !important;
            }

            .ks100-nav ul li a {
                line-height: 56px !important;
                font-size: 15px;
                color: #333;
                text-decoration: none;
                transition: color 0.2s ease;
            }
            .ks100-nav ul li a:hover {
                color: var(--guide-blue);
            }

            /* 隐藏旧的桌面端容器样式 */
            .desktop-content > div[style*="width: 1200px"] {
                display: none;
            }

            /* ===== 桌面端 Hero ===== */
            .pairing-hero {
                position: relative;
                padding: 80px 60px 70px;
                background: linear-gradient(to bottom, transparent 0%, transparent 72%, var(--guide-surface-alt) 100%);
                overflow: hidden;
            }
            .pairing-hero::before {
                content: "";
                position: absolute;
                top: -120px;
                right: -80px;
                width: 480px;
                height: 480px;
                background: radial-gradient(circle, rgba(66,133,244,0.18) 0%, transparent 70%);
                border-radius: 50%;
                pointer-events: none;
            }
            .pairing-hero::after {
                content: "";
                position: absolute;
                bottom: -160px;
                left: -100px;
                width: 400px;
                height: 400px;
                background: radial-gradient(circle, rgba(25,118,210,0.1) 0%, transparent 70%);
                border-radius: 50%;
                pointer-events: none;
            }
            .pairing-hero-inner {
                max-width: 1200px;
                margin: 0 auto;
                position: relative;
                z-index: var(--z-content);
                display: grid;
                grid-template-columns: 1.8fr 1fr;
                gap: 80px;
                align-items: center;
            }
            .pairing-hero-meta {
                display: flex;
                align-items: center;
                gap: 14px;
                margin-bottom: 20px;
                font-size: 13px;
                font-weight: 700;
                letter-spacing: 4px;
                color: var(--guide-blue);
                text-transform: uppercase;
            }
            .pairing-hero-meta-line {
                flex: 0 0 40px;
                height: 2px;
                background: var(--guide-blue);
                opacity: 0.3;
            }
            .pairing-hero-eyebrow {
                color: var(--guide-blue);
                font-weight: 700;
            }
            .pairing-hero h1 {
                font-size: clamp(40px, 5vw, 56px);
                font-weight: 800;
                line-height: 1.15;
                color: var(--guide-ink);
                margin: 0 0 18px;
                letter-spacing: -1px;
            }
            .pairing-hero h1 em {
                font-style: normal;
                font-weight: 800;
                background: linear-gradient(135deg, #1976D2 0%, #4285F4 100%);
                -webkit-background-clip: text;
                -webkit-text-fill-color: transparent;
                background-clip: text;
            }
            .pairing-hero-lead {
                font-size: 17px;
                line-height: 1.75;
                color: var(--guide-muted);
                max-width: 600px;
                margin: 0;
                font-weight: 400;
            }
            .pairing-hero-aside {
                display: flex;
                flex-direction: column;
                gap: 16px;
            }
            .pairing-hero-back-btn {
                display: inline-flex;
                align-items: center;
                gap: 10px;
                padding: 14px 28px;
                background: linear-gradient(135deg, #1976D2, #4285F4);
                color: #fff;
                font-size: 15px;
                font-weight: 600;
                text-decoration: none;
                border-radius: 12px;
                box-shadow: 0 4px 14px rgba(25, 118, 210, 0.3);
                transition: transform 0.3s ease, box-shadow 0.3s ease;
            }
            .pairing-hero-back-btn:hover {
                transform: translateY(-2px);
                box-shadow: 0 8px 24px rgba(25, 118, 210, 0.35);
            }
            .pairing-hero-back-btn svg {
                width: 18px;
                height: 18px;
            }
            .pairing-hero-info {
                display: flex;
                flex-direction: column;
                gap: 12px;
                padding: 20px 22px;
                background: rgba(255, 255, 255, 0.7);
                border: 1px solid rgba(25, 118, 210, 0.1);
                border-radius: 12px;
                backdrop-filter: blur(10px);
            }
            .pairing-hero-info-row {
                display: flex;
                align-items: center;
                justify-content: space-between;
            }
            .pairing-hero-info-label {
                font-size: 13px;
                color: var(--guide-muted);
                font-weight: 500;
            }
            .pairing-hero-info-value {
                font-size: 15px;
                font-weight: 600;
                color: var(--guide-ink);
            }

            /* ===== 内容切换器 ===== */
            .pairing-toggle-wrap {
                max-width: 1800px;
                margin: 0 auto;
                display: flex;
                align-items: center;
                justify-content: space-between;
                padding: 24px 60px;
                background: var(--guide-surface-alt);
                border-bottom: none;
            }
            .pairing-toggle-crumbs {
                font-size: 13px;
                font-weight: 500;
                color: var(--guide-muted);
                display: flex;
                align-items: center;
                gap: 10px;
            }
            .pairing-toggle-crumbs .dot {
                width: 8px;
                height: 8px;
                border-radius: 50%;
                background: var(--guide-blue);
                box-shadow: 0 0 0 4px var(--guide-blue-light);
            }
            .pairing-crumb-link {
                color: var(--guide-muted);
                text-decoration: none;
                font-weight: 500;
                transition: color 0.2s ease;
            }
            .pairing-crumb-link:hover {
                color: var(--guide-blue);
                text-decoration: underline;
            }
            .pairing-view-toggle {
                display: inline-flex;
                align-items: center;
                background: var(--guide-surface-card);
                border: 1px solid var(--guide-line);
                border-radius: 999px;
                padding: 4px;
                position: relative;
                cursor: pointer;
                user-select: none;
                gap: 0;
                box-shadow: 0 2px 8px rgba(0,0,0,0.04);
            }
            .pairing-view-option {
                position: relative;
                z-index: var(--z-content-high);
                display: inline-flex;
                align-items: center;
                gap: 8px;
                padding: 9px 28px;
                font-size: 13px;
                font-weight: 500;
                color: var(--guide-muted);
                border-radius: 999px;
                transition: color 0.3s ease;
                cursor: pointer;
            }
            .pairing-view-option.active {
                color: #FFFFFF !important;
                font-weight: 600;
            }
            .pairing-view-thumb {
                position: absolute;
                top: 4px;
                left: 4px;
                height: calc(100% - 8px);
                background: linear-gradient(135deg, #1976D2, #4285F4);
                border-radius: 999px;
                transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1), width 0.4s cubic-bezier(0.65, 0, 0.35, 1);
                z-index: var(--z-content);
                box-shadow: 0 4px 14px rgba(25, 118, 210, 0.3);
            }
            .pairing-view-option svg {
                width: 16px;
                height: 16px;
                flex-shrink: 0;
            }

            /* ===== 桌面端内容区域 ===== */
            .pairing-content {
                padding: 80px 60px 100px;
                background: var(--guide-surface-alt);
            }
            .pairing-content-inner {
                max-width: 1200px;
                margin: 0 auto;
            }
            .pairing-card {
                position: relative;
                background: var(--guide-surface);
                border-radius: 20px;
                padding: 40px;
                border: 1px solid var(--guide-line);
                box-shadow: 0 4px 24px rgba(25, 118, 210, 0.04);
                transition: box-shadow 0.4s ease, transform 0.4s ease;
            }
            .pairing-card:hover {
                box-shadow: 0 12px 40px rgba(25, 118, 210, 0.1);
                transform: translateY(-2px);
            }
            .pairing-card-header {
            position: relative;
            z-index: var(--z-toast);
        }

        header {
                display: flex;
                align-items: flex-end;
                justify-content: space-between;
                padding-bottom: 24px;
                margin-bottom: 32px;
                border-bottom: 1px solid var(--guide-line);
            }
            .pairing-card-title-wrap {
                flex: 1;
            }
            .pairing-card-tag {
                font-size: 12px;
                font-weight: 700;
                letter-spacing: 2px;
                text-transform: uppercase;
                color: var(--guide-blue);
                margin-bottom: 10px;
                display: block;
            }
            .pairing-card-title {
                font-size: 32px;
                font-weight: 800;
                color: var(--guide-ink);
                margin: 0;
                line-height: 1.2;
                letter-spacing: -0.3px;
            }
            .pairing-card-step {
                font-size: 48px;
                font-weight: 800;
                color: var(--guide-blue);
                opacity: 0.15;
                line-height: 1;
                margin-left: 16px;
                font-variant-numeric: tabular-nums;
            }

            /* ===== 轮播区域 ===== */
            .pairing-carousel-wrap {
                position: relative;
                width: 100%;
                aspect-ratio: 16 / 10;
                background: var(--guide-surface-card);
                border-radius: 16px;
                overflow: hidden;
                border: 1px solid var(--guide-line);
            }
            .pairing-carousel {
                display: flex;
                transition: transform 500ms cubic-bezier(0.65, 0, 0.35, 1);
                height: 100%;
                width: 100%;
            }
            .pairing-carousel-slide {
                min-width: 100%;
                height: 100%;
                display: flex;
                align-items: center;
                justify-content: center;
                background: var(--guide-surface-card);
            }
            .pairing-carousel-slide img {
                max-width: 90%;
                max-height: 90%;
                object-fit: contain;
                border-radius: 8px;
            }
            .pairing-carousel-btn {
                position: absolute;
                top: 50%;
                transform: translateY(-50%);
                width: 48px;
                height: 48px;
                background: rgba(255, 255, 255, 0.9);
                color: var(--guide-ink);
                border: 1px solid var(--guide-line);
                border-radius: 50%;
                font-size: 20px;
                cursor: pointer;
                z-index: var(--z-card);
                display: flex;
                align-items: center;
                justify-content: center;
                transition: all 0.25s ease;
                box-shadow: 0 2px 8px rgba(0,0,0,0.08);
            }
            .pairing-carousel-btn:hover {
                background: var(--guide-blue);
                color: #fff;
                border-color: var(--guide-blue);
                transform: translateY(-50%) scale(1.1);
                box-shadow: 0 4px 16px rgba(25, 118, 210, 0.3);
            }
            .pairing-carousel-btn.prev {
                left: 20px;
            }
            .pairing-carousel-btn.next {
                right: 20px;
            }
            .pairing-carousel-dots {
                position: absolute;
                bottom: 20px;
                left: 50%;
                transform: translateX(-50%);
                display: flex;
                gap: 8px;
                z-index: var(--z-card);
            }
            .pairing-carousel-dot {
                width: 8px;
                height: 8px;
                border-radius: 50%;
                background: var(--guide-faint);
                opacity: 0.5;
                cursor: pointer;
                transition: all 0.3s ease;
            }
            .pairing-carousel-dot.active {
                background: var(--guide-blue);
                opacity: 1;
                width: 24px;
                border-radius: 4px;
            }

            /* ===== 视频区域 ===== */
            .pairing-video-wrap {
                position: relative;
                width: 100%;
                aspect-ratio: 16 / 9;
                background: var(--guide-surface-card);
                border-radius: 16px;
                overflow: hidden;
                border: 1px solid var(--guide-line);
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .pairing-video-placeholder {
                font-size: 18px;
                color: var(--guide-muted);
                font-weight: 500;
            }

            /* ===== 步骤说明列表 ===== */
            .pairing-steps {
                margin-top: 40px;
                display: flex;
                gap: 20px;
                overflow-x: hidden;
                overflow-y: hidden;
                padding-bottom: 12px;
                scroll-behavior: smooth;
                scrollbar-width: none;
                position: relative;
            }
            .pairing-steps::-webkit-scrollbar {
                display: none;
            }
            .pairing-step-item {
                flex-shrink: 0;
                width: calc((100% - 40px) / 3);
                box-sizing: border-box;
                position: relative;
                padding: 24px;
                background: var(--guide-surface-card);
                border: 2px solid var(--guide-line);
                border-radius: 14px;
                transition: all 0.3s ease;
                cursor: pointer;
            }
            .pairing-step-item:hover {
                border-color: var(--guide-blue);
                transform: translateY(-2px);
                box-shadow: 0 8px 24px rgba(25, 118, 210, 0.08);
            }
            .pairing-step-item.active {
                border-color: var(--guide-blue);
                background: linear-gradient(135deg, rgba(25, 118, 210, 0.06) 0%, rgba(66, 133, 244, 0.04) 100%);
                box-shadow: 0 8px 28px rgba(25, 118, 210, 0.15);
                transform: translateY(-3px);
            }
            .pairing-step-item.active::before {
                content: "";
                position: absolute;
                top: -1px;
                left: -1px;
                right: -1px;
                bottom: -1px;
                border-radius: 14px;
                padding: 2px;
                background: linear-gradient(135deg, #1976D2, #4285F4);
                -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
                -webkit-mask-composite: xor;
                mask-composite: exclude;
                pointer-events: none;
            }
            .pairing-step-item.active::after {
                content: "当前步骤";
                position: absolute;
                top: 16px;
                right: 16px;
                z-index: var(--z-content-high);
                padding: 4px 12px;
                background: linear-gradient(135deg, #1976D2, #4285F4);
                color: #fff;
                font-size: 11px;
                font-weight: 600;
                border-radius: 999px;
                box-shadow: 0 4px 12px rgba(25, 118, 210, 0.3);
            }
            .pairing-step-item.active .pairing-step-num {
                transform: scale(1.1);
                box-shadow: 0 4px 14px rgba(25, 118, 210, 0.4);
            }
            .pairing-step-item.active .pairing-step-title {
                color: var(--guide-blue);
            }
            .pairing-step-num {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                width: 32px;
                height: 32px;
                background: linear-gradient(135deg, #1976D2, #4285F4);
                color: #fff;
                font-size: 14px;
                font-weight: 700;
                border-radius: 8px;
                margin-bottom: 14px;
            }
            .pairing-step-title {
                font-size: 16px;
                font-weight: 600;
                color: var(--guide-ink);
                margin: 0 0 8px;
            }
            .pairing-step-desc {
                font-size: 13px;
                color: var(--guide-muted);
                line-height: 1.6;
                margin: 0;
            }

            /* ===== 入场动画 ===== */
            .pairing-reveal {
                opacity: 0;
                transform: translateY(28px);
                transition: opacity 0.8s ease, transform 0.8s ease;
            }
            .pairing-reveal.is-visible {
                opacity: 1;
                transform: translateY(0);
            }
            .pairing-reveal.delay-1 { transition-delay: 0.1s; }
            .pairing-reveal.delay-2 { transition-delay: 0.2s; }
            .pairing-reveal.delay-3 { transition-delay: 0.3s; }
            .pairing-reveal.delay-4 { transition-delay: 0.4s; }
            .pairing-reveal.delay-5 { transition-delay: 0.5s; }
        }

        /* 客户端下载按钮 */
        .client-download-wrap {
            position: relative;
            margin-left: auto;
            line-height: 56px;
            list-style: none;
        }
        .client-download-btn {
            display: inline-block;
            text-decoration: none;
            padding: 6px 14px;
            background: transparent;
            color: #333;
            font-size: 13px;
            font-weight: 500;
            border: none;
            border-radius: 6px;
            cursor: pointer;
            transition: all 0.25s ease;
            font-family: inherit;
        }
        .client-download-btn:hover {
            background: transparent;
            color: #1976D2;
            transform: translateY(-1px);
        }
        .client-download-popup {
            position: absolute;
            top: calc(100% + 8px);
            right: 0;
            width: 164px;
            padding: 12px;
            background: #fff;
            border-radius: 10px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.15);
            opacity: 0;
            visibility: hidden;
            transform: translateY(-6px);
            transition: all 0.25s ease;
            z-index: var(--z-nav-header);
            pointer-events: none;
            line-height: normal;
        }
        .client-download-popup::before {
            content: "";
            position: absolute;
            top: -6px;
            right: 20px;
            width: 12px;
            height: 12px;
            background: #fff;
            transform: rotate(45deg);
            border-radius: 2px;
        }
        .client-download-wrap:hover .client-download-popup,
        .client-download-popup:hover {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
            pointer-events: auto;
        }
        .client-download-popup img {
            width: 100%;
            height: auto;
            display: block;
            border-radius: 4px;
        }
        .client-download-popup .popup-title {
            font-size: 14px;
            color: #333;
            text-align: center;
            margin-top: 8px;
            margin-bottom: 4px;
            font-weight: 500;
        }
        .client-download-popup .popup-desc {
            font-size: 12px;
            color: #999;
            text-align: center;
            margin: 0;
        }

        .client-download-wrap {
            display: none;
        }

        @media (min-width: 769px) {
            .client-download-wrap {
                display: flex;
                align-items: center;
            }
        }

        /* ===== 移动端样式 ===== */

        .pair-mobile-hero {
            position: relative;
            padding: 28px 20px 24px;
            background: var(--bg-page-gradient);
            overflow: hidden;
        }
        .pair-mobile-hero::before {
            content: "";
            position: absolute;
            top: -40px;
            right: -30px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(66, 133, 244, 0.14) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .pair-mobile-hero::after {
            content: "";
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 160px;
            height: 160px;
            background: radial-gradient(circle, rgba(25, 118, 210, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .pair-mobile-hero-inner {
            position: relative;
            z-index: var(--z-content);
        }
        .pair-mobile-back {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            background: var(--color-primary);
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            color: #FFFFFF;
            text-decoration: none;
            margin-bottom: 16px;
            transition: all 0.3s ease;
        }
        .pair-mobile-back:active {
            transform: scale(0.96);
            background: var(--color-primary-hover);
        }
        .pair-mobile-back-arrow {
            font-size: 16px;
            line-height: 1;
            transform: translateY(-1px);
        }
        .pair-mobile-hero-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .pair-mobile-hero-meta-line {
            width: 28px;
            height: 2px;
            background: var(--pair-blue);
            opacity: 0.35;
            border-radius: 2px;
        }
        .pair-mobile-hero-eyebrow {
            font-family: var(--font-mono);
            font-size: 11px;
            font-weight: 700;
            letter-spacing: 2.5px;
            color: var(--pair-blue);
            text-transform: uppercase;
        }
        .pair-mobile-hero h1 {
            font-family: var(--font-serif);
            font-size: 30px;
            font-weight: 600;
            line-height: 1.15;
            color: var(--pair-ink);
            margin: 0 0 10px;
            letter-spacing: -1px;
        }
        .pair-mobile-hero h1 em {
            font-style: italic;
            font-weight: 500;
            background: linear-gradient(135deg, #1976D2 0%, #4285F4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-left: 4px;
        }
        .pair-mobile-hero-lead {
            font-size: 14px;
            line-height: 1.6;
            color: var(--pair-muted);
            margin: 0;
            font-weight: 400;
        }

        .pair-mobile-content {
            padding: 24px 16px 40px;
            background: var(--pair-surface-alt);
        }

        .pair-segmented {
            position: relative;
            display: flex;
            height: 44px;
            gap: 8px;
            margin-bottom: 16px;
            padding: 4px;
            background: var(--pair-surface-card);
            border: 1px solid var(--pair-line);
            border-radius: 999px;
        }
        .pair-segmented-indicator {
            position: absolute;
            top: 4px;
            left: 4px;
            width: calc((100% - 16px) / 2);
            height: calc(100% - 8px);
            background: linear-gradient(135deg, #1976D2, #4285F4);
            border-radius: 999px;
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: var(--z-base);
            box-shadow: 0 2px 10px rgba(25, 118, 210, 0.3);
        }
        .pair-segmented-btn {
            flex: 1;
            position: relative;
            z-index: var(--z-content);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--pair-muted);
            cursor: pointer;
            border-radius: 999px;
            transition: color 0.3s ease;
            border: none;
            background: transparent;
            -webkit-tap-highlight-color: transparent;
        }
        .pair-segmented-btn.active {
            color: #FFFFFF;
            font-weight: 600;
        }
        .pair-segmented-btn:active { opacity: 0.8; }
        .pair-segmented-btn-icon {
            width: 16px;
            height: 16px;
        }

        .pair-display-card {
            position: relative;
            background: var(--pair-surface);
            border: 1px solid var(--pair-line);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(25, 118, 210, 0.05);
            padding: 12px;
        }

        .pair-carousel-wrap {
            position: relative;
            width: 100%;
            aspect-ratio: 9/16;
            background: var(--pair-surface-alt);
            overflow: hidden;
            border-radius: 12px;
        }
        .pair-carousel {
            display: flex;
            width: 100%;
            height: 100%;
            transition: transform 0.45s cubic-bezier(0.22, 0.61, 0.36, 1);
        }
        .pair-carousel-slide {
            flex-shrink: 0;
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        
            overflow: hidden;
            position: relative;
            transform: translateZ(0);
            box-sizing: border-box;}
        .pair-carousel-slide img {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
            border-radius: 8px;
            cursor: zoom-in;
        
            position: relative;
            z-index: 0;}
        .pair-carousel-btn {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(0, 0, 0, 0.06);
            border-radius: 50%;
            font-size: 16px;
            color: var(--pair-ink);
            cursor: pointer;
            z-index: var(--z-card);
            transition: all 0.25s ease;
            -webkit-tap-highlight-color: transparent;
            opacity: 1;
            pointer-events: auto;
        }
        .pair-carousel-btn:active { transform: translateY(-50%) scale(0.92); }
        .pair-carousel-btn.prev { left: 12px; }
        .pair-carousel-btn.next { right: 12px; }
        .pair-carousel-btn:disabled {
            opacity: 0.3;
            pointer-events: none;
        }
        .pair-carousel-dots {
            position: absolute;
            bottom: 16px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 7px;
            z-index: var(--z-card);
        }
        .pair-carousel-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.15);
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .pair-carousel-dot.active {
            width: 20px;
            border-radius: 4px;
            background: var(--pair-blue);
        }

        .pair-video-placeholder {
            aspect-ratio: 9/16;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            background: var(--pair-surface-alt);
            color: var(--pair-faint);
            border-radius: 12px;
        }
        .pair-video-placeholder-icon {
            width: 48px;
            height: 48px;
            margin-bottom: 12px;
            opacity: 0.4;
        }
        .pair-video-placeholder p {
            font-size: 13px;
            margin: 0;
            font-weight: 500;
        }

        .pair-steps-info {
            margin-top: 16px;
            padding: 20px;
            background: #FFFFFF;
            border: 2px solid #1976D2;
            border-radius: 16px;
            box-shadow: 0 4px 16px rgba(25, 118, 210, 0.12);
            overflow: hidden;
        }
        .pair-step-singles {
            position: relative;
        }
        .pair-step-single {
            display: none;
        }
        .pair-step-single.active {
            display: block;
        }
        .pair-step-single-num {
            font-size: 12px;
            font-weight: 700;
            color: #1976D2;
            letter-spacing: 2px;
            margin-bottom: 10px;
            text-align: center;
            transition: transform 0.1s ease, opacity 0.1s ease;
        }
        .pair-step-single-title {
            font-size: 18px;
            font-weight: 700;
            color: #454F5E;
            margin: 0 0 10px;
            text-align: center;
            transition: transform 0.1s ease, opacity 0.1s ease;
        }
        .pair-step-single-desc {
            font-size: 14px;
            color: #556675;
            line-height: 1.6;
            margin: 0;
            text-align: center;
            transition: transform 0.1s ease, opacity 0.1s ease;
        }
        .pair-step-single-desc strong {
            color: #454F5E;
            font-weight: 600;
        }
        .pair-step-single-num.slide-out,
        .pair-step-single-title.slide-out,
        .pair-step-single-desc.slide-out {
            transform: translateX(-100%);
            opacity: 0;
        }
        .pair-step-single-num.slide-in,
        .pair-step-single-title.slide-in,
        .pair-step-single-desc.slide-in {
            transform: translateX(100%);
            opacity: 0;
        }
        .pair-step-single-num.slide-in-reverse,
        .pair-step-single-title.slide-in-reverse,
        .pair-step-single-desc.slide-in-reverse {
            transform: translateX(-100%);
            opacity: 0;
        }
        .pair-step-single-num.slide-out-reverse,
        .pair-step-single-title.slide-out-reverse,
        .pair-step-single-desc.slide-out-reverse {
            transform: translateX(100%);
            opacity: 0;
        }
        .pair-step-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid #E8ECF1;
        }
        .pair-step-btn {
            width: 44px;
            height: 44px;
            background: #FFFFFF;
            color: #454F5E;
            border: 1px solid #E2E8F0;
            border-radius: 50%;
            font-size: 18px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.25s ease;
            -webkit-tap-highlight-color: transparent;
        }
        .pair-step-btn:active {
            background: #1976D2;
            color: #FFFFFF;
            border-color: #1976D2;
        }
        .pair-step-btn:disabled {
            opacity: 0.35;
            pointer-events: none;
        }
        .pair-step-indicator {
            font-size: 13px;
            color: #94A3B8;
            font-weight: 500;
            min-width: 50px;
            text-align: center;
        }
        .pair-step-indicator span {
            color: #1976D2;
            font-weight: 700;
        }

        .pair-animate-in {
            opacity: 0;
            transform: translateY(14px);
        }
        .pair-animate-in.visible {
            opacity: 1;
            transform: translateY(0);
            transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
        }
        .pair-animate-in.delay-1 { transition-delay: 0.08s; }
        .pair-animate-in.delay-2 { transition-delay: 0.16s; }
        .pair-animate-in.delay-3 { transition-delay: 0.24s; }
        .pair-animate-in.delay-4 { transition-delay: 0.32s; }

        #image-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.95);
            z-index: var(--z-toast);
            justify-content: center;
            align-items: center;
        }
        #modal-image-container {
            width: 100%;
            height: 100%;
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        #modal-image {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
        }
        #modal-close {
            display: none;
        }
        /* 桌面端隐藏 #image-modal，使用 .global-lightbox */
        @media (min-width: 769px) {
            #image-modal {
                display: none !important;
            }
        }
        #modal-dots {
            position: absolute;
            bottom: 24px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 8px;
            z-index: var(--z-lightbox);
        }
        .modal-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.35);
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .modal-dot.active {
            width: 20px;
            border-radius: 4px;
            background-color: #4285F4;
        }


    

        /* 统一页眉菜单层级：确保在弹出菜单遮罩之上 */
        @media (max-width: 768px) {
            header {
                position: relative !important;
                z-index: var(--z-nav-header) !important;
            }
        }
    

            @media (max-width: 768px) {
                .header-menu-1,
                .header-menu-2 {
                    width: 100% !important;
                }

                body {
                    margin: 0;
                    padding: 0;
                    background: var(--color-bg);
                    font-family: var(--font-sans);
                    color: var(--pair-ink);
                    -webkit-font-smoothing: antialiased;
                    overflow-x: hidden;
                }

                header {
            position: relative;
            z-index: var(--z-toast);
        }

        header {
                    display: block !important;
                    margin: 0 !important;
                    padding: 0 !important;
                    height: auto !important;
                    position: relative !important;
                    top: 0 !important;
                    background: #FFFFFF !important;
                    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06) !important;
                    border-bottom: 1px solid #e8e8e8 !important;
                    backdrop-filter: none !important;
                }

                main {
                    padding: 0 !important;
                }

                .desktop-content {
                    display: none;
                }

                .mobile-content {
                    display: block;
                }

                .pair-mobile-hero {
                    position: relative;
                    padding: 28px 20px 24px;
                    background: var(--bg-page-gradient);
                    overflow: hidden;
                }
                .pair-mobile-hero::before {
                    content: "";
                    position: absolute;
                    top: -40px;
                    right: -30px;
                    width: 180px;
                    height: 180px;
                    background: radial-gradient(circle, rgba(66, 133, 244, 0.14) 0%, transparent 70%);
                    border-radius: 50%;
                    pointer-events: none;
                }
                .pair-mobile-hero::after {
                    content: "";
                    position: absolute;
                    bottom: -60px;
                    left: -40px;
                    width: 160px;
                    height: 160px;
                    background: radial-gradient(circle, rgba(25, 118, 210, 0.1) 0%, transparent 70%);
                    border-radius: 50%;
                    pointer-events: none;
                }
                .pair-mobile-hero-inner {
                    position: relative;
                    z-index: var(--z-content);
                }
                .pair-mobile-back {
                    display: inline-flex;
                    align-items: center;
                    gap: 6px;
                    padding: 10px 18px;
                    background: var(--color-primary);
                    border-radius: 8px;
                    font-size: 14px;
                    font-weight: 500;
                    color: #FFFFFF;
                    text-decoration: none;
                    margin-bottom: 16px;
                    transition: all 0.3s ease;
                }
                .pair-mobile-back:active {
                    transform: scale(0.96);
                    background: var(--color-primary-hover);
                }
                .pair-mobile-back-arrow {
                    font-size: 16px;
                    line-height: 1;
                    transform: translateY(-1px);
                }
                .pair-mobile-hero-meta {
                    display: flex;
                    align-items: center;
                    gap: 10px;
                    margin-bottom: 14px;
                }
                .pair-mobile-hero-meta-line {
                    width: 28px;
                    height: 2px;
                    background: var(--pair-blue);
                    opacity: 0.35;
                    border-radius: 2px;
                }
                .pair-mobile-hero-eyebrow {
                    font-family: var(--font-mono);
                    font-size: 11px;
                    font-weight: 700;
                    letter-spacing: 2.5px;
                    color: var(--pair-blue);
                    text-transform: uppercase;
                }
                .pair-mobile-hero-step {
                    font-size: 13px;
                    font-weight: 600;
                    color: var(--pair-faint);
                    margin-left: auto;
                    font-variant-numeric: tabular-nums;
                }
                .pair-mobile-hero h1 {
                    font-family: var(--font-serif);
                    font-size: 30px;
                    font-weight: 600;
                    line-height: 1.15;
                    color: var(--pair-ink);
                    margin: 0 0 10px;
                    letter-spacing: -1px;
                }
                .pair-mobile-hero h1 em {
                    font-style: italic;
                    font-weight: 500;
                    background: linear-gradient(135deg, #1976D2 0%, #4285F4 100%);
                    -webkit-background-clip: text;
                    -webkit-text-fill-color: transparent;
                    background-clip: text;
                    margin-left: 4px;
                }
                .pair-mobile-hero-lead {
                    font-size: 14px;
                    line-height: 1.6;
                    color: var(--pair-muted);
                    margin: 0;
                    font-weight: 400;
                }

                .pair-mobile-content {
                    padding: 24px 16px 40px;
                    background: var(--pair-surface-alt);
                }

                .pair-segmented {
                    position: relative;
                    display: flex;
                    height: 44px;
                    gap: 8px;
                    margin-bottom: 16px;
                    padding: 4px;
                    background: var(--pair-surface-card);
                    border: 1px solid var(--pair-line);
                    border-radius: 999px;
                }
                .pair-segmented-indicator {
                    position: absolute;
                    top: 4px;
                    left: 4px;
                    width: calc((100% - 16px) / 2);
                    height: calc(100% - 8px);
                    background: linear-gradient(135deg, #1976D2, #4285F4);
                    border-radius: 999px;
                    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                    z-index: var(--z-base);
                    box-shadow: 0 2px 10px rgba(25, 118, 210, 0.3);
                }
                .pair-segmented-btn {
                    flex: 1;
                    position: relative;
                    z-index: var(--z-content);
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    gap: 6px;
                    font-size: 14px;
                    font-weight: 500;
                    color: var(--pair-muted);
                    cursor: pointer;
                    border-radius: 999px;
                    transition: color 0.3s ease;
                    border: none;
                    background: transparent;
                    -webkit-tap-highlight-color: transparent;
                }
                .pair-segmented-btn.active {
                    color: #FFFFFF;
                    font-weight: 600;
                }
                .pair-segmented-btn:active { opacity: 0.8; }
                .pair-segmented-btn-icon {
                    width: 16px;
                    height: 16px;
                }

                .pair-display-card {
                    position: relative;
                    background: var(--pair-surface);
                    border: 1px solid var(--pair-line);
                    border-radius: 16px;
                    overflow: hidden;
                    box-shadow: 0 4px 20px rgba(25, 118, 210, 0.05);
                    padding: 12px;
                }

                .pair-carousel-wrap {
                    position: relative;
                    width: 100%;
                    aspect-ratio: 9/16;
                    background: var(--pair-surface-alt);
                    overflow: hidden;
                    border-radius: 12px;
                }
                .pair-carousel {
                    display: flex;
                    width: 100%;
                    height: 100%;
                    transition: transform 0.45s cubic-bezier(0.22, 0.61, 0.36, 1);
                }
                .pair-carousel-slide {
                    flex-shrink: 0;
                    width: 100%;
                    height: 100%;
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    padding: 20px;
                }
                .pair-carousel-slide img {
                    max-width: 100%;
                    max-height: 100%;
                    object-fit: contain;
                    border-radius: 8px;
                    cursor: zoom-in;
                }
                .pair-carousel-btn {
                    position: absolute;
                    top: 50%;
                    transform: translateY(-50%);
                    width: 36px;
                    height: 36px;
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    background: rgba(255, 255, 255, 0.92);
                    backdrop-filter: blur(10px);
                    border: 1px solid rgba(0, 0, 0, 0.06);
                    border-radius: 50%;
                    font-size: 16px;
                    color: var(--pair-ink);
                    cursor: pointer;
                    z-index: var(--z-card);
                    transition: all 0.25s ease;
                    -webkit-tap-highlight-color: transparent;
                    opacity: 0;
                    pointer-events: none;
                }
                .pair-carousel-btn:active { transform: translateY(-50%) scale(0.92); }
                .pair-carousel-btn.prev { left: 12px; }
                .pair-carousel-btn.next { right: 12px; }
                .pair-carousel-btn:disabled {
                    opacity: 0;
                    pointer-events: none;
                }
                .pair-carousel-dots {
                    position: absolute;
                    bottom: 16px;
                    left: 50%;
                    transform: translateX(-50%);
                    display: flex;
                    gap: 7px;
                    z-index: var(--z-card);
                }
                .pair-carousel-dot {
                    width: 7px;
                    height: 7px;
                    border-radius: 50%;
                    background: rgba(0, 0, 0, 0.15);
                    transition: all 0.3s ease;
                    cursor: pointer;
                }
                .pair-carousel-dot.active {
                    width: 20px;
                    border-radius: 4px;
                    background: var(--pair-blue);
                }

                .pair-video-placeholder {
                    aspect-ratio: 9/16;
                    display: flex;
                    flex-direction: column;
                    align-items: center;
                    justify-content: center;
                    background: var(--pair-surface-alt);
                    color: var(--pair-faint);
                    border-radius: 12px;
                }
                .pair-video-placeholder-icon {
                    width: 48px;
                    height: 48px;
                    margin-bottom: 12px;
                    opacity: 0.4;
                }
                .pair-video-placeholder p {
                    font-size: 13px;
                    margin: 0;
                    font-weight: 500;
                }

                .pair-steps-info {
                    margin-top: 16px;
                    padding: 20px;
                    background: #FFFFFF;
                    border: 2px solid #1976D2;
                    border-radius: 16px;
                    box-shadow: 0 4px 16px rgba(25, 118, 210, 0.12);
                    overflow: hidden;
                }
                .pair-step-singles {
                    position: relative;
                }
                .pair-step-single {
                    display: none;
                }
                .pair-step-single.active {
                    display: block;
                }
                .pair-step-single-num {
                    font-size: 12px;
                    font-weight: 700;
                    color: #1976D2;
                    letter-spacing: 2px;
                    margin-bottom: 10px;
                    text-align: center;
                    transition: transform 0.1s ease, opacity 0.1s ease;
                }
                .pair-step-single-title {
                    font-size: 18px;
                    font-weight: 700;
                    color: #454F5E;
                    margin: 0 0 10px;
                    text-align: center;
                    transition: transform 0.1s ease, opacity 0.1s ease;
                }
                .pair-step-single-desc {
                    font-size: 14px;
                    color: #556675;
                    line-height: 1.6;
                    margin: 0;
                    text-align: center;
                    transition: transform 0.1s ease, opacity 0.1s ease;
                }
                .pair-step-single-desc strong {
                    color: #454F5E;
                    font-weight: 600;
                }
                .pair-step-single-num.slide-out,
                .pair-step-single-title.slide-out,
                .pair-step-single-desc.slide-out {
                    transform: translateX(-100%);
                    opacity: 0;
                }
                .pair-step-single-num.slide-in,
                .pair-step-single-title.slide-in,
                .pair-step-single-desc.slide-in {
                    transform: translateX(100%);
                    opacity: 0;
                }
                .pair-step-single-num.slide-in-reverse,
                .pair-step-single-title.slide-in-reverse,
                .pair-step-single-desc.slide-in-reverse {
                    transform: translateX(-100%);
                    opacity: 0;
                }
                .pair-step-single-num.slide-out-reverse,
                .pair-step-single-title.slide-out-reverse,
                .pair-step-single-desc.slide-out-reverse {
                    transform: translateX(100%);
                    opacity: 0;
                }
                .pair-step-actions {
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    gap: 20px;
                    margin-top: 16px;
                    padding-top: 16px;
                    border-top: 1px solid #E8ECF1;
                }
                .pair-step-btn {
                    width: 44px;
                    height: 44px;
                    background: #FFFFFF;
                    color: #454F5E;
                    border: 1px solid #E2E8F0;
                    border-radius: 50%;
                    font-size: 18px;
                    cursor: pointer;
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    transition: all 0.25s ease;
                    -webkit-tap-highlight-color: transparent;
                }
                .pair-step-btn:active {
                    background: #1976D2;
                    color: #FFFFFF;
                    border-color: #1976D2;
                }
                .pair-step-btn:disabled {
                    opacity: 0.35;
                    pointer-events: none;
                }
                .pair-step-indicator {
                    font-size: 13px;
                    color: #94A3B8;
                    font-weight: 500;
                    min-width: 50px;
                    text-align: center;
                }
                .pair-step-indicator span {
                    color: #1976D2;
                    font-weight: 700;
                }
                .pair-step-dots {
                    display: flex;
                    justify-content: center;
                    gap: 8px;
                    margin-top: 14px;
                }
                .pair-step-dot {
                    width: 8px;
                    height: 8px;
                    border-radius: 50%;
                    background: #E2E8F0;
                    transition: all 0.3s ease;
                    cursor: pointer;
                }
                .pair-step-dot.active {
                    background: #1976D2;
                    width: 24px;
                    border-radius: 4px;
                }

                .pair-step-cards-scroll {
                    width: 100%;
                    overflow-x: auto;
                    overflow-y: hidden;
                    -webkit-overflow-scrolling: touch;
                    scrollbar-width: none;
                    margin-top: 16px;
                    padding-bottom: 8px;
                }
                .pair-step-cards-scroll::-webkit-scrollbar {
                    display: none;
                }
                .pair-step-cards {
                    display: flex;
                    gap: 10px;
                    padding: 0 4px;
                    width: fit-content;
                }
                .pair-step-card {
                    flex-shrink: 0;
                    width: calc(33.33% - 7px);
                    min-width: calc(33.33% - 7px);
                    padding: 12px 10px;
                    background: var(--pair-surface-card);
                    border: 1px solid var(--pair-line);
                    border-radius: 10px;
                    text-align: center;
                    cursor: pointer;
                    transition: all 0.3s ease;
                }
                .pair-step-card.active {
                    background: linear-gradient(135deg, rgba(25, 118, 210, 0.08) 0%, rgba(66, 133, 244, 0.06) 100%);
                    border-color: var(--pair-blue);
                    box-shadow: 0 4px 16px rgba(25, 118, 210, 0.15);
                    transform: scale(1.02);
                }
                .pair-step-card-num {
                    display: block;
                    font-size: 12px;
                    font-weight: 700;
                    color: var(--pair-blue);
                    margin-bottom: 4px;
                }
                .pair-step-card-title {
                    display: block;
                    font-size: 12px;
                    color: var(--pair-muted);
                    line-height: 1.4;
                }
                .pair-step-card.active .pair-step-card-title {
                    color: var(--pair-ink);
                    font-weight: 600;
                }

                .pair-animate-in {
                    opacity: 0;
                    transform: translateY(14px);
                }
                .pair-animate-in.visible {
                    opacity: 1;
                    transform: translateY(0);
                    transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
                }
                .pair-animate-in.delay-1 { transition-delay: 0.08s; }
                .pair-animate-in.delay-2 { transition-delay: 0.16s; }
                .pair-animate-in.delay-3 { transition-delay: 0.24s; }
                .pair-animate-in.delay-4 { transition-delay: 0.32s; }

                #image-modal {
                    display: none;
                    position: fixed;
                    top: 0;
                    left: 0;
                    width: 100%;
                    height: 100%;
                    background-color: rgba(0, 0, 0, 0.95);
                    z-index: var(--z-toast);
                    justify-content: center;
                    align-items: center;
                    touch-action: none;
                    -webkit-user-select: none;
                    user-select: none;
                    overflow: hidden;
                }
                #modal-image-container {
                    width: 100%;
                    height: 100%;
                    display: flex;
                    justify-content: center;
                    align-items: center;
                    position: relative;
                    overflow: hidden;
                }
                #modal-image {
                    max-width: 100%;
                    max-height: 100%;
                    object-fit: contain;
                    transform-origin: center center;
                    transition: transform 0.25s ease;
                    -webkit-user-drag: none;
                    user-select: none;
                    -webkit-user-select: none;
                    will-change: transform;
                }
                #modal-image.zooming {
                    transition: none;
                }
                #modal-close {
                    position: absolute;
                    top: 15px;
                    right: 15px;
                    width: 40px;
                    height: 40px;
                    background-color: rgba(255, 255, 255, 0.2);
                    border: none;
                    border-radius: 50%;
                    color: #fff;
                    font-size: 24px;
                    cursor: pointer;
                    z-index: var(--z-lightbox);
                    display: flex;
                    justify-content: center;
                    align-items: center;
                }
                #modal-dots {
                    position: absolute;
                    bottom: 24px;
                    left: 50%;
                    transform: translateX(-50%);
                    display: flex;
                    gap: 8px;
                    z-index: var(--z-lightbox);
                }
                .modal-dot {
                    width: 8px;
                    height: 8px;
                    border-radius: 50%;
                    background-color: rgba(255, 255, 255, 0.35);
                    cursor: pointer;
                    transition: all 0.3s ease;
                }
                .modal-dot.active {
                    width: 20px;
                    border-radius: 4px;
                    background-color: #4285F4;
                }
            }
        
        @media (prefers-color-scheme: dark) and (max-width: 768px) {
            /* ---- Hero 区 ---- */
            .pair-mobile-hero {
                background: var(--surface-card);
            }
            .pair-mobile-hero::before {
                background: radial-gradient(circle, var(--hero-glow-1) 0%, transparent 70%);
            }
            .pair-mobile-hero::after {
                background: radial-gradient(circle, var(--hero-glow-2) 0%, transparent 70%);
            }
            .pair-mobile-hero h1 {
                color: var(--text-primary);
            }
            .pair-mobile-hero h1 em {
                background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-soft) 100%);
                -webkit-background-clip: text;
                -webkit-text-fill-color: transparent;
                background-clip: text;
            }
            .pair-mobile-hero-lead {
                color: var(--text-secondary);
            }
            .pair-mobile-hero-eyebrow {
                color: var(--brand-primary-soft);
            }
            .pair-mobile-hero-meta-line {
                background: var(--brand-primary-soft);
            }
            /* 返回按钮保持蓝底白字，深色下无需改 */

            /* ---- 页面底层 + 内容区 ---- */
            body {
                background: var(--surface-page);
            }
            .pair-mobile-content {
                background: var(--surface-page);
            }
            .pair-mobile-content::before {
                background: linear-gradient(to bottom, var(--surface-card) 0%, var(--surface-page) 100%);
            }

            /* ---- 分段切换器 ---- */
            .pair-segmented {
                background: var(--surface-card);
                border-color: var(--line-default);
            }
            .pair-segmented-btn {
                color: var(--text-secondary);
            }
            .pair-segmented-btn.active {
                color: var(--menu-line);
            }
            .pair-segmented-indicator {
                background: linear-gradient(135deg, var(--brand-primary), var(--brand-primary-soft));
            }

            /* ---- 展示卡片 / 轮播 ---- */
            .pair-display-card {
                background: var(--surface-card);
                border-color: var(--line-default);
            }
            .pair-carousel-wrap {
                background: var(--surface-body);
            }
            .pair-carousel-slide {
                background: var(--surface-card);
            }
            .pair-carousel-btn {
                background: var(--surface-elevated);
                color: var(--text-primary);
                border-color: var(--line-default);
            }
            .pair-carousel-dot {
                background: var(--line-default);
            }
            .pair-carousel-dot.active {
                background: var(--brand-primary-soft);
            }
            .pair-video-placeholder {
                background: var(--surface-body);
                color: var(--text-faint);
            }

            /* ---- 步骤说明（白底写死 → 深色卡片） ---- */
            .pair-steps-info {
                background: var(--surface-card);
                border-color: var(--brand-primary);
            }
            .pair-step-single-num {
                color: var(--brand-primary-soft);
            }
            .pair-step-single-title {
                color: var(--text-primary);
            }
            .pair-step-single-desc {
                color: var(--text-secondary);
            }
            .pair-step-single-desc strong {
                color: var(--text-primary);
            }
            .pair-step-btn {
                background: var(--surface-card);
                color: var(--text-primary);
                border-color: var(--line-default);
            }
            .pair-step-btn:active {
                background: var(--brand-primary);
                color: var(--menu-line);
                border-color: var(--brand-primary);
            }
            .pair-step-indicator {
                color: var(--text-faint);
            }
            .pair-step-indicator span {
                color: var(--brand-primary-soft);
            }
            .pair-step-dot {
                background: var(--line-default);
            }
            .pair-step-dot.active {
                background: var(--brand-primary-soft);
            }

            /* ---- 步骤卡片 ---- */
            .pair-step-card {
                background: var(--surface-card);
                border-color: var(--line-default);
            }
            .pair-step-card.active {
                background: linear-gradient(135deg, var(--brand-alpha-08) 0%, var(--brand-alpha-06) 100%);
                border-color: var(--brand-primary-soft);
            }
            .pair-step-card-num {
                color: var(--brand-primary-soft);
            }
            .pair-step-card-title {
                color: var(--text-secondary);
            }
            .pair-step-card.active .pair-step-card-title {
                color: var(--text-primary);
            }

            /* ---- 页脚 ---- */
            .site-footer {
                background: var(--surface-page);
                color: var(--text-secondary);
            }
            .site-footer a {
                color: var(--text-primary);
            }
            /* 2026-08-17 深色模式下隐藏 Hero 光圈 */
            .pair-mobile-hero::before,
            .pair-mobile-hero::after {
                display: none !important;
            }

        }

/* 2026-08-17 移动端移除轮播图指示点 */
@media (max-width: 768px) {
    .pair-carousel-dots,
    .pair-carousel-dot {
        display: none !important;
    }
}

/* 2026-08-17 移动端轮播区比例与 video 预览修复（9:16 竖屏） */
@media (max-width: 768px) {
    .pair-carousel-wrap {
        aspect-ratio: auto !important;
        height: auto !important;
    }
    .pair-carousel {
        height: auto !important;
    }
    .pair-carousel-slide {
        height: auto !important;
    }
    .pair-carousel-slide img {
        max-height: 50vh !important;
        height: auto !important;
    }
    .pair-video-wrap {
        aspect-ratio: 9/16 !important;
        height: var(--pair-video-height, 60vh) !important;
        width: auto !important;
        max-width: 100% !important;
        max-height: none !important;
        margin: 0 auto !important;
    }
    .pair-video-wrap iframe {
        width: 100% !important;
        height: 100% !important;
        border: 0 !important;
    }
}