/* 由 ks100\computer-guide.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。 */



        * { box-sizing: border-box; margin: 0; padding: 0; }
        html, body { width: 100%; min-height: 100%; }
        body {
            font-family: var(--font-sans);
            color: var(--guide-ink);
            -webkit-font-smoothing: antialiased;
            background: var(--color-bg);
            overflow-x: hidden;
            font-feature-settings: "tnum";
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        /* ===== Layout — push footer to bottom ===== */
        main#main-content {
            flex: 1;
        }

        /* ===== Header — minimal, brand-only ===== */
        header {
            display: block;
        }
        .header-menu-2 {
            height: 64px;
            width: 100%;
            background-color: #FFFFFF;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .header-menu-logo {
            margin-left: 10px;
            display: flex;
            align-items: center;
        }
        .header-menu-logo-text {
            font-size: 25px;
            font-weight: bold;
            color: #000000;
        }
        .header-menu-logo-sub {
            margin-left: 10px;
            margin-top: 6px;
            font-size: 12px;
            color: #666;
        }
        #hamburger-menu {
            margin-right: 10px;
            cursor: pointer;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            width: 28px;
            height: 20px;
            position: relative;
            padding: 2px 0;
        }
        #hamburger-menu .menu-line {
            width: 100%;
            height: 2.5px;
            background-color: #1a1a1a;
            border-radius: 2px;
            position: absolute;
            left: 0;
            transition: all 0.3s ease;
        }
        #hamburger-menu .menu-line.top { top: 0; }
        #hamburger-menu .menu-line.middle { top: 8px; }
        #hamburger-menu .menu-line.bottom { top: 16px; }
        #hamburger-menu.hamburger-active .menu-line.top {
            top: 8px;
            transform: rotate(45deg);
        }
        #hamburger-menu.hamburger-active .menu-line.middle {
            opacity: 0;
        }
        #hamburger-menu.hamburger-active .menu-line.bottom {
            top: 8px;
            transform: rotate(-45deg);
        }

        /* ===== Hero — full bleed, brand dominant ===== */
        .guide-hero {
            position: relative;
            padding: 40px 20px 32px;
            /* 卡片背景色收进变量：浅色=当前浅蓝灰→白（视觉不变）；
               深色见文件末尾 @media(dark) 块，改为浅蓝灰底。
               引用处不再写死 hex，改色只动 --cg-hero-bg-* 一处。 */
            --cg-hero-bg-start: #F4F8FE;
            --cg-hero-bg-end:   #FFFFFF;
            background:
                radial-gradient(ellipse 70% 65% at 100% 0%, rgba(66, 133, 244, 0.06) 0%, transparent 95%),
                radial-gradient(ellipse 65% 70% at 0% 100%, rgba(25, 118, 210, 0.04) 0%, transparent 95%),
                linear-gradient(180deg, var(--cg-hero-bg-start) 0%, var(--cg-hero-bg-end) 100%);
            border-radius: 28px;
            overflow: hidden;
        }
        .guide-hero::before {
            content: "02";
            position: absolute;
            top: 16px;
            right: 16px;
            font-family: var(--font-serif);
            font-size: 120px;
            font-weight: 400;
            line-height: 0.9;
            color: var(--guide-blue);
            opacity: 0.08;
            letter-spacing: -4px;
            pointer-events: none;
        }
        .guide-hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-mono);
            font-size: 11px;
            font-weight: 500;
            letter-spacing: 2.5px;
            color: var(--guide-blue);
            text-transform: uppercase;
            margin-bottom: 18px;
        }
        .guide-hero-eyebrow::before {
            content: "";
            width: 18px;
            height: 1px;
            background: var(--guide-blue);
        }
        .guide-hero h1 {
            font-family: var(--font-serif);
            font-size: 30px;
            font-weight: 600;
            line-height: 1.05;
            color: var(--guide-ink);
            margin: 0 0 16px;
            letter-spacing: -1.5px;
        }
        .guide-hero h1 em {
            font-style: italic;
            font-weight: 500;
            color: var(--guide-blue-ink);
        }
        .guide-hero-lead {
            font-size: 15px;
            line-height: 1.6;
            color: var(--guide-muted);
            max-width: 32ch;
            margin: 0;
            font-weight: 400;
        }

        /* ===== Hero metrics — inline editorial row, not cards ===== */
        .guide-hero-metrics {
            display: flex;
            align-items: stretch;
            margin-top: 36px;
            padding-top: 20px;
            border-top: 1px solid var(--guide-line);
        }
        .metric {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
            position: relative;
        }
        .metric + .metric {
            padding-left: 16px;
            margin-left: 16px;
            border-left: 1px solid var(--guide-line);
        }
        .metric-label {
            font-family: var(--font-mono);
            font-size: 10px;
            font-weight: 500;
            letter-spacing: 1.5px;
            color: var(--guide-faint);
            text-transform: uppercase;
        }
        .metric-value {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 600;
            color: var(--guide-ink);
            line-height: 1.1;
            letter-spacing: -0.3px;
        }
        .metric-value em {
            font-style: normal;
            color: var(--guide-blue);
        }

        /* ===== Toggle bar — static position ===== */
        .guide-toggle-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            background: var(--guide-surface-alt);
            border-bottom: none;
        }
        .guide-toggle-crumbs {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--guide-muted);
        }
        .guide-toggle-crumbs .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--guide-blue);
            box-shadow: 0 0 0 4px var(--guide-blue-light);
        }
        .guide-toggle-crumbs .crumb-current {
            color: var(--guide-ink);
            font-weight: 600;
        }
        .guide-toggle-crumbs .crumb-link {
            color: var(--guide-muted);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.2s ease;
        }
        .guide-toggle-crumbs .crumb-link:hover {
            color: var(--guide-blue);
            text-decoration: underline;
        }
        .guide-device-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);
        }
        .guide-device-option {
            position: relative;
            z-index: var(--z-content-high);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            font-size: 12px;
            font-weight: 500;
            color: var(--guide-muted);
            border-radius: 999px;
            transition: color 0.3s ease;
            cursor: pointer;
        }
        .guide-device-option.active {
            color: #FFFFFF !important;
            font-weight: 600;
        }
        .guide-device-thumb {
            position: absolute;
            top: 3px;
            left: 3px;
            height: calc(100% - 6px);
            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 3px 10px rgba(25, 118, 210, 0.25);
        }
        .guide-device-thumb ~ .guide-device-option {
            color: var(--guide-muted);
        }
        .guide-device-option svg {
            width: 13px;
            height: 13px;
            flex-shrink: 0;
        }

        /* ===== Main content — section, no cards ===== */
        main {
            background: var(--guide-surface);
        }
        .guide-section {
            padding: 36px 20px 12px;
            opacity: 0;
            transition: opacity 0.5s ease;
        }
        .guide-section.is-visible {
            opacity: 1;
        }

        .part-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 24px;
            padding-bottom: 18px;
            border-bottom: 1px solid var(--guide-ink);
        }
        .part-tag {
            font-family: var(--font-mono);
            font-size: 10px;
            font-weight: 500;
            letter-spacing: 2px;
            color: var(--guide-blue);
            text-transform: uppercase;
            margin-bottom: 6px;
            display: block;
        }
        .part-title {
            font-family: var(--font-serif);
            font-size: 28px;
            font-weight: 600;
            line-height: 1.15;
            color: var(--guide-ink);
            letter-spacing: -0.8px;
        }
        .part-title em {
            font-style: italic;
            font-weight: 500;
            color: var(--guide-blue-ink);
        }
        .part-num {
            font-family: var(--font-serif);
            font-size: 56px;
            font-weight: 400;
            line-height: 0.85;
            color: var(--guide-ink);
            letter-spacing: -2px;
            font-variant-numeric: tabular-nums;
        }

        /* ===== List — no item cards, just rows with hairline dividers ===== */
        .guide-list {
            list-style: none;
            margin: 0 0 36px;
            padding: 0;
        }
        .guide-item {
            position: relative;
            display: grid;
            grid-template-columns: 36px 1fr auto;
            align-items: center;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--guide-line-soft);
            cursor: pointer;
            transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
            opacity: 0;
            transform: translateY(12px);
        }
        .guide-item.is-visible {
            opacity: 1;
            transform: translateY(0);
            transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.65, 0, 0.35, 1);
        }
        .guide-item:last-child {
            border-bottom: none;
        }
        .guide-item-num {
            font-family: var(--font-serif);
            font-size: 16px;
            font-weight: 500;
            color: var(--guide-faint);
            font-variant-numeric: tabular-nums;
            transition: color 0.3s ease;
            line-height: 1;
        }
        .guide-item-body {
            min-width: 0;
        }
        .guide-item-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--guide-ink);
            margin: 0 0 4px;
            line-height: 1.35;
            letter-spacing: -0.1px;
            transition: color 0.3s ease;
        }
        .guide-item-title a {
            color: inherit;
            text-decoration: none;
        }
        .guide-item-desc {
            font-size: 12px;
            color: var(--guide-muted);
            line-height: 1.5;
            margin: 0;
        }
        .guide-item-meta {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .guide-item-meta-text {
            font-family: var(--font-mono);
            font-size: 10px;
            font-weight: 500;
            letter-spacing: 1px;
            color: var(--guide-faint);
            text-transform: uppercase;
        }
        .guide-item-arrow {
            width: 18px;
            height: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--guide-faint);
            transform: translateX(-4px);
            opacity: 0;
            transition: transform 0.35s cubic-bezier(0.65, 0, 0.35, 1), opacity 0.35s ease, color 0.35s ease;
        }
        .guide-item-arrow svg {
            width: 14px;
            height: 14px;
        }
        .guide-item:active {
            transform: translateX(6px);
        }
        .guide-item:active .guide-item-arrow {
            transform: translateX(0);
            opacity: 1;
            color: var(--guide-blue);
        }
        .guide-item:active .guide-item-title {
            color: var(--guide-blue);
        }
        .guide-item:active .guide-item-num {
            color: var(--guide-blue);
        }
        .guide-item a.cover-link {
            position: absolute;
            inset: 0;
            z-index: var(--z-content);
        }

        /* ===== Mobile pagination (电脑端指南分页,每页 6 项,仅指示点+滑动) ===== */
        .guide-pagination {
            display: none;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin: 4px 0 24px;
            padding: 10px 0;
            user-select: none;
        }
        .guide-pagination.is-active {
            display: flex;
        }
        .guide-page-dots {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .guide-page-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--guide-line);
            cursor: pointer;
            transition: all 0.3s ease;
            -webkit-tap-highlight-color: transparent;
        }
        .guide-page-dot.active {
            background: var(--guide-blue);
            width: 20px;
            border-radius: 4px;
        }
        /* 分页项隐藏/显示 */
        .guide-list[data-paginated] .guide-item.is-page-hidden {
            display: none;
        }
        /* 分页容器固定高度 (6 项高度),通过 JS 设置 --guide-page-fixed-height */
        .guide-list[data-paginated] {
            height: var(--guide-page-fixed-height, 480px);
        }

        /* popup-menu / menu-overlay 样式由 common.css 与内联 style 共同管理 */
        /* ===== Motion: hero stagger entrance ===== */
        .hero-line {
            opacity: 0;
            transform: translateY(14px);
            transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
        }
        .hero-line.is-visible {
            opacity: 1;
            transform: translateY(0);
        }
        .hero-line.d1 { transition-delay: 0.05s; }
        .hero-line.d2 { transition-delay: 0.15s; }
        .hero-line.d3 { transition-delay: 0.25s; }
        .hero-line.d4 { transition-delay: 0.35s; }
        .hero-line.d5 { transition-delay: 0.45s; }

        /* ===== Section cross-fade ===== */
        .section-fade {
            transition: opacity 0.4s ease, transform 0.4s ease;
        }

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

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

            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);
            }

            /* ===== 桌面端 Hero ===== */
            .guide-hero {
                position: relative;
                padding: 80px 60px 70px;
                background: transparent;
                overflow: hidden;
            }
            .guide-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;
            }
            .guide-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;
            }
            .guide-hero-grid {
                display: none;
            }
            .guide-hero-inner {
                max-width: 1200px;
                margin: 0 auto;
                position: relative;
                z-index: var(--z-content);
                display: grid;
                grid-template-columns: 1.6fr 1fr;
                gap: 80px;
                align-items: center;
            }
            .guide-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;
            }
            .guide-hero-meta-line {
                flex: 0 0 40px;
                height: 2px;
                background: var(--guide-blue);
                opacity: 0.3;
            }
            .guide-hero-eyebrow {
                display: inline-flex;
                align-items: center;
                gap: 8px;
                font-family: var(--font-mono);
                font-size: 12px;
                font-weight: 500;
                letter-spacing: 2px;
                color: var(--guide-blue);
                text-transform: none;
            }
            .guide-hero-eyebrow::before {
                content: "";
                width: 18px;
                height: 1px;
                background: var(--guide-blue);
            }
            .guide-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;
                white-space: nowrap;
            }
            .guide-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;
            }
            .guide-hero-lead {
                font-size: 17px;
                line-height: 1.75;
                color: var(--guide-muted);
                max-width: 600px;
                margin: 0;
                font-weight: 400;
            }
            .guide-hero-aside {
                display: flex;
                flex-direction: column;
                gap: 24px;
            }
            .guide-hero-aside-row {
                display: flex;
                align-items: center;
                justify-content: space-between;
                padding: 18px 22px;
                background: rgba(255, 255, 255, 0.7);
                border: 1px solid rgba(25, 118, 210, 0.1);
                border-radius: 12px;
                backdrop-filter: blur(10px);
            }
            .guide-hero-aside-row:last-child {
                border-bottom: 1px solid rgba(25, 118, 210, 0.1);
            }
            .guide-hero-aside-label {
                font-size: 13px;
                color: var(--guide-muted);
                font-weight: 500;
            }
            .guide-hero-aside-value {
                font-size: 28px;
                font-weight: 800;
                color: var(--guide-ink);
                line-height: 1;
            }
            .guide-hero-aside-value em {
                font-style: normal;
                color: var(--guide-blue);
                font-weight: 800;
            }

            /* ===== 设备切换器 ===== */
            .guide-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;
            }
            .guide-toggle-crumbs {
                font-size: 13px;
                font-weight: 500;
                color: var(--guide-muted);
                display: flex;
                align-items: center;
                gap: 10px;
            }
            .guide-toggle-crumbs .dot {
                width: 8px;
                height: 8px;
                border-radius: 50%;
                background: var(--guide-blue);
                box-shadow: 0 0 0 4px var(--guide-blue-light);
            }
            .guide-device-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);
            }
            .guide-device-option {
                position: relative;
                z-index: var(--z-content-high);
                display: inline-flex;
                align-items: center;
                gap: 8px;
                padding: 9px 22px;
                font-size: 13px;
                font-weight: 500;
                color: var(--guide-muted);
                border-radius: 999px;
                transition: color 0.3s ease;
                cursor: pointer;
            }
            .guide-device-option.active {
                color: var(--guide-ink);
                font-weight: 600;
            }
            .guide-device-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);
            }
            .guide-device-thumb ~ .guide-device-option {
                color: var(--guide-muted);
            }
            .guide-device-option.active {
                color: #FFFFFF !important;
            }
            .guide-device-option svg {
                width: 16px;
                height: 16px;
                flex-shrink: 0;
            }

            /* ===== 桌面端内容容器 ===== */
            .guide-content {
                position: relative;
                padding: 96px 60px 100px;
                background: transparent;
                overflow: hidden;
            }
            .guide-content::before {
                content: "";
                position: absolute;
                top: -100px;
                right: -60px;
                width: 400px;
                height: 400px;
                background: radial-gradient(circle, rgba(66,133,244,0.15) 0%, transparent 70%);
                border-radius: 50%;
                pointer-events: none;
            }
            .guide-content::after {
                content: "";
                position: absolute;
                bottom: -120px;
                left: -80px;
                width: 360px;
                height: 360px;
                background: radial-gradient(circle, rgba(25,118,210,0.08) 0%, transparent 70%);
                border-radius: 50%;
                pointer-events: none;
            }
            .guide-content > .guide-columns {
                max-width: 1200px;
                margin: 0 auto;
                position: relative;
                z-index: var(--z-content);
            }
            .guide-columns {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .guide-column {
                position: relative;
                background: var(--guide-surface);
                border-radius: 20px;
                padding: 36px 32px 32px;
                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;
            }
            .guide-column:hover {
                box-shadow: 0 12px 40px rgba(25, 118, 210, 0.1);
                transform: translateY(-2px);
            }
            .guide-column-header {
                display: flex;
                align-items: flex-end;
                justify-content: space-between;
                padding-top: 2px;
                padding-bottom: 20px;
                margin-bottom: 24px;
                border-bottom: 1px solid var(--guide-line);
            }
            .guide-column-title-wrap {
                flex: 1;
            }
            .guide-column-tag {
                font-size: 12px;
                font-weight: 700;
                letter-spacing: 2px;
                text-transform: uppercase;
                color: var(--guide-blue);
                margin-bottom: 10px;
                display: block;
            }
            .guide-column-title {
                font-size: 28px;
                font-weight: 800;
                color: var(--guide-ink);
                margin: 0;
                line-height: 1.2;
                letter-spacing: -0.3px;
            }
            .guide-column-count {
                font-size: 40px;
                font-weight: 800;
                color: var(--guide-blue);
                opacity: 0.15;
                line-height: 1;
                margin-left: 0;
                font-variant-numeric: tabular-nums;
            }
            /* 列头右侧 2×2 栅格：
               行1 —— 圆点（居中于第 2 列，即 08 正上方）
               行2 —— 切换按钮 ‹ ›（第 1 列）+ 08（第 2 列），两者同排居中 */
            .guide-column-header-right {
                display: grid;
                grid-template-columns: auto auto;
                grid-template-rows: auto auto;
                align-items: center;
                column-gap: 12px;
                row-gap: 6px;
                margin-left: 16px;
            }
            .guide-column-header-right .guide-pagination {
                grid-area: 1 / 2;
                justify-self: center;
                align-self: end;
                margin: 0;
                padding: 0;
                order: 0;
            }
            .guide-column-header-right .guide-column-switch {
                grid-area: 2 / 1;
                align-self: center;
            }
            .guide-column-header-right .guide-column-count {
                grid-area: 2 / 2;
                justify-self: center;
            }
            /* 顺序切换按钮（‹ ›）：与 08 同一行、位于其左侧，首尾到头停用 */
            .guide-column-switch {
                display: inline-flex;
                align-items: center;
                gap: 6px;
            }
            .guide-switch-btn {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                width: 26px;
                height: 26px;
                padding: 0;
                border: 1px solid var(--guide-line);
                border-radius: 50%;
                background: var(--guide-surface-card);
                color: var(--guide-ink);
                cursor: pointer;
                transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease, opacity 0.25s ease;
                -webkit-tap-highlight-color: transparent;
            }
            .guide-switch-btn svg {
                display: block;
                width: 14px;
                height: 14px;
            }
            .guide-switch-btn:hover:not(:disabled) {
                background: var(--guide-blue-light);
                border-color: var(--guide-blue);
                color: var(--guide-blue);
            }
            .guide-switch-btn:focus-visible {
                outline: 2px solid var(--guide-blue);
                outline-offset: 2px;
            }
            /* 不可用态：整枚按钮转灰（灰底 + 灰边 + 灰箭头），首页 ‹ 与末页 › 各自动置灰 */
            .guide-switch-btn:disabled {
                background: var(--guide-line-soft);
                border-color: var(--guide-line);
                color: var(--guide-faint);
                opacity: 1;
                cursor: not-allowed;
            }

            .guide-list {
                list-style: none;
                margin: 0;
                padding: 0;
            }
            .guide-item {
                position: relative;
                display: grid;
                grid-template-columns: 36px 1fr auto;
                align-items: center;
                gap: 16px;
                padding: 18px 18px 18px 16px;
                margin-bottom: 8px;
                border-radius: 12px;
                transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
                cursor: pointer;
            }
            .guide-item:last-child {
                margin-bottom: 0;
            }
            .guide-item::after {
                content: "→";
                position: absolute;
                right: 18px;
                top: 50%;
                transform: translateY(-50%) translateX(-6px);
                opacity: 0;
                color: var(--guide-blue);
                font-size: 16px;
                font-weight: 600;
                transition: opacity 0.25s ease, transform 0.25s ease;
                pointer-events: none;
            }
            .guide-item:hover {
                background: var(--guide-blue-light);
                transform: translateX(4px);
            }
            .guide-item:hover::after {
                opacity: 1;
                transform: translateY(-50%) translateX(0);
            }
            .guide-item:hover .guide-item-title {
                color: var(--guide-blue);
            }
            .guide-item:hover .guide-item-num {
                color: var(--guide-blue);
            }

            .guide-item-num {
                font-size: 14px;
                font-weight: 700;
                color: var(--guide-faint);
                line-height: 1;
                transition: color 0.25s ease;
                font-variant-numeric: tabular-nums;
                text-align: center;
            }
            .guide-item-body {
                min-width: 0;
            }
            .guide-item-title {
                font-size: 16px;
                font-weight: 600;
                color: var(--guide-ink);
                margin: 0 0 4px;
                letter-spacing: -0.1px;
                transition: color 0.25s ease;
                line-height: 1.4;
            }
            .guide-item-title a {
                color: inherit;
                text-decoration: none;
            }
            .guide-item-desc {
                font-size: 13px;
                color: var(--guide-muted);
                line-height: 1.55;
                margin: 0;
                font-weight: 400;
            }
            .guide-item-meta {
                font-size: 11px;
                font-weight: 600;
                color: var(--guide-blue);
                background: var(--guide-blue-light);
                padding: 4px 10px;
                border-radius: 999px;
                flex-shrink: 0;
                margin-right: 16px;
            }
            .guide-item a.cover-link {
                position: absolute;
                inset: 0;
                z-index: var(--z-content);
            }
            .guide-item a.cover-link:focus-visible {
                outline: 2px solid var(--guide-blue);
                outline-offset: 4px;
                border-radius: 12px;
            }

            /* ===== 入场动画 ===== */
            .guide-reveal {
                opacity: 0;
                transform: translateY(28px);
                transition: opacity 0.8s ease, transform 0.8s ease;
            }
            .guide-reveal.is-visible {
                opacity: 1;
                transform: translateY(0);
            }
            .guide-reveal.delay-1 { transition-delay: 0.1s; }
            .guide-reveal.delay-2 { transition-delay: 0.2s; }
            .guide-reveal.delay-3 { transition-delay: 0.3s; }
            .guide-reveal.delay-4 { transition-delay: 0.4s; }
            .guide-reveal.delay-5 { transition-delay: 0.5s; }
            .guide-reveal.delay-6 { transition-delay: 0.6s; }

            /* 列表项错峰入场 */
            .guide-item {
                opacity: 0;
                transform: translateY(12px);
                transition: opacity 0.5s ease, transform 0.5s ease, background 0.25s ease, box-shadow 0.25s ease;
            }
            .guide-item.is-visible {
                opacity: 1;
                transform: translateY(0);
            }

            /* 移动端内容在桌面端隐藏 */
            .mobile-content {
                display: none !important;
            }

            /* 桌面端内容显示 */
            .desktop-content {
                display: block !important;
            }

        }

        /* 桌面端时隐藏移动端页脚（若有） */
        @media (min-width: 769px) {
            footer[role="contentinfo"] {
                display: block;
            }
        }

        /* 客户端下载按钮 */
        .client-download-wrap {
            position: relative;
            margin-left: auto;
            line-height: 56px;
            list-style: none;
        }
        .client-download-btn {
            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;
            display: inline-block;
            text-decoration: none;
        }
        .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;
            }
        }
    

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

            /* 消除移动端页眉与 hero 之间的上方空白：覆盖 device-toggle.css 的 main margin-top */
            main {
                margin-top: 0 !important;
            }
            .guide-hero {
                padding-top: 16px !important;
            }
        }
    

        /* ===== 主题数动效 ===== */
        .guide-topic-counter {
            display: inline-block;
            min-width: 1.1em;
            text-align: center;
            transition: color 0.3s ease, transform 0.3s ease;
            font-variant-numeric: tabular-nums;
        }
        .guide-topic-counter.is-animating {
            color: var(--guide-blue);
            transform: scale(1.18);
            text-shadow: 0 0 18px rgba(25, 118, 210, 0.25);
        }
        #guide-hero-cover-desktop,
        #guide-hero-cover-mobile {
            transition: opacity 0.25s ease, transform 0.25s ease;
        }
        #guide-hero-cover-desktop.is-switching,
        #guide-hero-cover-mobile.is-switching {
            opacity: 0.4;
            transform: translateY(-4px);
        }

        /* ===== 指南 Hero 卡片 · 深色模式（仅移动端系统深色） =====
           浅色：linear-gradient(180deg, #F4F8FE→#FFFFFF)（见上方 .guide-hero 默认变量）
           深色：保持浅蓝灰底（浅色卡片浮在深色页上），避免被弄成深底；
           颜色收在 .guide-hero 内的 --cg-hero-bg-*，改色只动一处。 */
        @media (prefers-color-scheme: dark) and (max-width: 768px) {
            .guide-hero {
                /* 深色模式：与截图一致的深色底，保留光晕质感 */
                --cg-hero-bg-start: var(--surface-page, #121418);
                --cg-hero-bg-end:   var(--surface-card, #1E2229);
            }
        }