:root {
            --brand: #0066ff;
            --brand-deep: #0044cc;
            --brand-glow: #3399ff;
            --accent: #ff6b35;
            --surface-0: #ffffff;
            --surface-1: #f7f9fc;
            --surface-2: #eef3f9;
            --text-strong: #0a0f1a;
            --text-body: #2a3344;
            --text-muted: #5e6b80;
            --border: #dde4ef;
            --border-light: #eaf0f7;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 28px rgba(0,0,0,0.07);
            --shadow-lg: 0 20px 48px rgba(0,0,0,0.10);
            --radius-sm: 12px;
            --radius: 18px;
            --radius-lg: 26px;
            --radius-xl: 36px;
            --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-stack);
            background: var(--surface-0);
            color: var(--text-body);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        .container { max-width: 1240px; margin: 0 auto; padding: 0 28px; }

        /* 导航栏（与首页完全一致） */
        .header {
            position: sticky; top: 0; z-index: 120;
            background: rgba(255,255,255,0.88);
            backdrop-filter: saturate(180%) blur(18px);
            -webkit-backdrop-filter: saturate(180%) blur(18px);
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0; transition: var(--transition);
        }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            gap: 16px; flex-wrap: wrap;
        }
        .logo-group { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
        .logo-icon { width: 38px; height: 38px; flex-shrink: 0; }
        .logo-text {
            font-weight: 750; font-size: 24px; letter-spacing: -0.4px;
            color: var(--text-strong); white-space: nowrap;
        }
        .logo-text .accent-dot { color: var(--brand); }
        .logo-badge {
            font-size: 11px; font-weight: 600; background: var(--brand);
            color: #fff; padding: 3px 10px; border-radius: 30px;
            letter-spacing: 0.3px; white-space: nowrap;
        }
        .nav { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
        .nav a {
            font-size: 15px; font-weight: 530; color: var(--text-body);
            position: relative; padding: 6px 0; white-space: nowrap;
        }
        .nav a:hover { color: var(--brand); }
        .nav a.active { color: var(--brand); font-weight: 650; }
        .nav a.active::after {
            content: ''; position: absolute; left: 0; bottom: -2px;
            width: 100%; height: 2.5px; background: var(--brand); border-radius: 4px;
        }
        .nav-pill {
            background: var(--brand); color: #fff !important; font-size: 13px;
            padding: 7px 16px !important; border-radius: 40px; font-weight: 600;
            letter-spacing: 0.2px;
        }
        .nav-pill:hover {
            background: var(--brand-deep) !important; color: #fff !important;
            transform: translateY(-1px); box-shadow: 0 6px 18px rgba(0,102,255,0.28);
        }
        .mobile-toggle {
            display: none; flex-direction: column; gap: 5px; background: none;
            border: none; cursor: pointer; padding: 6px; z-index: 130;
        }
        .mobile-toggle span {
            display: block; width: 26px; height: 2.5px;
            background: var(--text-strong); border-radius: 4px; transition: 0.25s;
        }

        /* 页面头部 */
        .page-hero {
            padding: 50px 0 36px;
            background: linear-gradient(165deg, #f4f8ff 0%, #ffffff 30%, #f9fbff 100%);
            border-bottom: 1px solid var(--border-light); text-align: center;
        }
        .page-hero h1 {
            font-size: 42px; font-weight: 800; letter-spacing: -0.025em;
            color: var(--text-strong); margin-bottom: 10px;
        }
        .page-hero .subhead {
            font-size: 17px; color: var(--text-muted); max-width: 600px;
            margin: 0 auto 18px; line-height: 1.6;
        }
        .hero-tags {
            display: flex; flex-wrap: wrap; justify-content: center;
            gap: 12px; font-size: 13px; color: var(--text-muted);
        }
        .hero-tags span {
            background: var(--surface-2); padding: 5px 14px;
            border-radius: 30px; font-weight: 540;
        }
        .hero-tags span.em {
            background: #e8f0ff; color: var(--brand); font-weight: 630;
        }

        /* 主内容区 */
        .guide-content {
            padding: 48px 0 64px;
            background: var(--surface-1);
        }
        .guide-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 48px;
        }

        /* 步骤卡片 */
        .steps-container {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .step-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            padding: 28px 28px 24px;
            display: flex;
            gap: 20px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .step-card:hover {
            border-color: #c0d4f0;
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-icon-col {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: var(--surface-2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            color: var(--brand);
            margin-top: 4px;
        }
        .step-content h3 {
            font-size: 20px;
            font-weight: 680;
            color: var(--text-strong);
            margin-bottom: 6px;
        }
        .step-content p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 8px;
        }
        .step-content .tip {
            display: inline-block;
            background: #e8f0ff;
            color: var(--brand);
            font-size: 12px;
            padding: 3px 12px;
            border-radius: 30px;
            font-weight: 600;
            margin-top: 4px;
        }
        .step-extra {
            margin-top: 8px;
            padding: 10px 14px;
            background: var(--surface-1);
            border-radius: var(--radius-sm);
            font-size: 13px;
            color: var(--text-muted);
            border-left: 3px solid var(--brand);
        }

        /* 创意版块：可视化进度条 */
        .progress-section {
            background: #fff;
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-light);
            padding: 28px 26px;
            margin-bottom: 36px;
            box-shadow: var(--shadow-sm);
        }
        .progress-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }
        .progress-header h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-strong);
        }
        .progress-bar-bg {
            width: 100%;
            height: 6px;
            background: var(--surface-2);
            border-radius: 10px;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .progress-fill {
            width: 40%;
            height: 100%;
            background: linear-gradient(90deg, var(--brand), var(--brand-glow));
            border-radius: 10px;
            animation: progressPulse 2s ease-in-out infinite;
        }
        @keyframes progressPulse {
            0%, 100% { width: 40%; }
            50% { width: 60%; }
        }
        .progress-steps {
            display: flex;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 创意版块：小贴士滚动 */
        .tips-marquee {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            padding: 20px 22px;
            margin-bottom: 32px;
            overflow: hidden;
            position: relative;
        }
        .tips-marquee h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 8px;
        }
        .marquee-inner {
            display: flex;
            gap: 24px;
            white-space: nowrap;
            animation: marqueeScroll 20s linear infinite;
        }
        .marquee-inner span {
            font-size: 14px;
            color: var(--text-muted);
            background: var(--surface-1);
            padding: 6px 16px;
            border-radius: 20px;
            display: inline-block;
        }
        @keyframes marqueeScroll {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        /* 侧边栏 */
        .guide-sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            padding: 24px 20px;
            margin-bottom: 24px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h4 {
            font-size: 17px;
            font-weight: 680;
            color: var(--text-strong);
            margin-bottom: 12px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card ul li {
            padding: 6px 0;
            border-bottom: 1px solid #f0f4fe;
            font-size: 14px;
        }
        .sidebar-card ul li:last-child { border-bottom: none; }
        .sidebar-card ul li a {
            color: var(--text-body);
            transition: var(--transition);
        }
        .sidebar-card ul li a:hover { color: var(--brand); }
        .sidebar-card .tag {
            background: var(--surface-2);
            padding: 2px 10px;
            border-radius: 30px;
            font-size: 11px;
            font-weight: 600;
            color: var(--brand);
            margin-left: 6px;
        }

        /* Footer */
        .footer {
            background: #0a0f1a;
            color: #b0c0d8;
            padding: 44px 0 28px;
            border-top: 1px solid #1a2333;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 30px;
            margin-bottom: 28px;
        }
        .footer-col h5 {
            color: #ffffff;
            font-size: 15px;
            font-weight: 640;
            margin-bottom: 10px;
            letter-spacing: 0.2px;
        }
        .footer-col ul { list-style: none; padding: 0; }
        .footer-col ul li {
            font-size: 13px;
            line-height: 2;
            color: #8899b4;
        }
        .footer-col a { color: #8899b4; }
        .footer-col a:hover { color: #ffffff; }
        .footer-bottom {
            border-top: 1px solid #1a2333;
            padding-top: 18px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: #6a7d94;
        }
        .footer-bottom .meta-row { display: flex; flex-wrap: wrap; gap: 16px; }

        /* 响应式 */
        @media (max-width: 1024px) {
            .guide-grid { grid-template-columns: 1fr; gap: 32px; }
            .guide-sidebar { position: relative; top: 0; }
        }
        @media (max-width: 768px) {
            .nav {
                display: none; width: 100%; flex-direction: column;
                align-items: flex-start; gap: 12px; padding: 14px 0 6px;
                border-top: 1px solid var(--border-light); margin-top: 8px;
            }
            .nav.open { display: flex; }
            .mobile-toggle { display: flex; }
            .page-hero h1 { font-size: 30px; }
            .step-card { flex-direction: column; gap: 12px; }
            .progress-steps { flex-wrap: wrap; gap: 8px; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 14px; }
            .page-hero h1 { font-size: 26px; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .footer-bottom { flex-direction: column; gap: 6px; }
            .logo-text { font-size: 20px; }
        }