:root {
            --p21sl-primary: #62e286;
            --p21sl-primary-dark: #4dc471;
            --p21sl-bg: #ffffff;
            --p21sl-text: #1d1d1f;
            --p21sl-text-light: #86868b;
            --p21sl-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --p21sl-shadow-deep: 0 20px 40px rgba(98, 226, 134, 0.15);
            --p21sl-radius: 12px;
            --p21sl-transition: 0.35s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            word-break: keep-all;
            overflow-wrap: break-word;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--p21sl-text);
            line-height: 1.6;
            background-color: #fbfbfd;
        }

        /* 强制复用首页导航栏风格 */
        .p21sl-drift {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            z-index: 1000;
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .p21sl-orbit {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 64px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .p21sl-logo img {
            height: 32px;
            display: block;
        }

        .p21sl-orbit-links {
            display: flex;
            gap: 32px;
        }

        .p21sl-orbit-links a {
            text-decoration: none;
            color: var(--p21sl-text);
            font-weight: 500;
            font-size: 14px;
            transition: var(--p21sl-transition);
        }

        .p21sl-orbit-links a:hover,
        .p21sl-orbit-links a.active {
            color: var(--p21sl-primary-dark);
        }

        /* Hero: fullbleed_overlay */
        .p21sl-blaze {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 100px 24px;
            background: linear-gradient(135deg, #000 0%, #1a1a1a 100%);
            color: #fff;
            overflow: hidden;
        }

        .p21sl-blaze::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 70% 30%, rgba(98, 226, 134, 0.2), transparent 50%);
            pointer-events: none;
        }

        .p21sl-vessel {
            max-width: 900px;
            width: 100%;
            position: relative;
            z-index: 2;
        }

        .p21sl-blaze h1 {
            font-size: clamp(2.5rem, 8vw, 4.5rem);
            line-height: 1.1;
            margin-bottom: 24px;
            font-weight: 700;
            letter-spacing: -0.02em;
        }

        .p21sl-blaze p {
            font-size: clamp(1.1rem, 3vw, 1.4rem);
            color: rgba(255,255,255,0.7);
            max-width: 700px;
            margin: 0 auto 40px;
        }

        /* 容器组件 */
        .p21sl-vault {
            padding: 100px 24px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .p21sl-nexus {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 60px;
        }

        /* 展示区域与卡片 */
        .p21sl-warp {
            flex: 1;
            min-width: 320px;
        }

        .p21sl-replica {
            background: #fff;
            padding: 40px;
            border-radius: var(--p21sl-radius);
            box-shadow: var(--p21sl-shadow);
            transition: var(--p21sl-transition);
            border: 1px solid rgba(0,0,0,0.03);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .p21sl-replica:hover {
            transform: translateY(-8px);
            box-shadow: var(--p21sl-shadow-deep);
        }

        .p21sl-glyph {
            width: 56px;
            height: 56px;
            background: rgba(98, 226, 134, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            color: var(--p21sl-primary-dark);
        }

        .p21sl-replica h3 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--p21sl-text);
        }

        .p21sl-replica p {
            font-size: 16px;
            color: var(--p21sl-text-light);
            line-height: 1.7;
        }

        /* 按钮组件 */
        .p21sl-pulse {
            display: inline-flex;
            align-items: center;
            padding: 14px 32px;
            background: var(--p21sl-primary);
            color: #000;
            text-decoration: none;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--p21sl-transition);
            border: none;
            cursor: pointer;
        }

        .p21sl-pulse:hover {
            background: var(--p21sl-primary-dark);
            transform: scale(1.05);
        }

        .p21sl-snap {
            display: inline-flex;
            align-items: center;
            padding: 14px 32px;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            text-decoration: none;
            border-radius: 30px;
            font-weight: 600;
            backdrop-filter: blur(10px);
            transition: var(--p21sl-transition);
            margin-left: 16px;
        }

        .p21sl-snap:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        /* 脚本与代码区域 */
        .p21sl-strobe {
            background: #111;
            border-radius: var(--p21sl-radius);
            padding: 30px;
            margin: 60px 0;
            border-left: 4px solid var(--p21sl-primary);
            font-family: 'Courier New', Courier, monospace;
            color: #e0e0e0;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }

        .p21sl-strobe code {
            display: block;
            margin-bottom: 8px;
        }

        .p21sl-strobe .comment { color: #6a9955; }
        .p21sl-strobe .keyword { color: var(--p21sl-primary); }

        /* 页脚区域 */
        .p21sl-trace {
            background: #f4f4f7;
            padding: 80px 24px 40px;
            margin-top: 100px;
        }

        .p21sl-origin {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            flex-wrap: wrap;
            gap: 40px;
            border-bottom: 1px solid rgba(0,0,0,0.06);
            padding-bottom: 40px;
        }

        .p21sl-origin-brand h2 {
            font-size: 24px;
            margin-bottom: 16px;
        }

        .p21sl-origin-links {
            display: flex;
            gap: 60px;
        }

        .p21sl-origin-group h4 {
            margin-bottom: 20px;
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--p21sl-text-light);
        }

        .p21sl-origin-group a {
            display: block;
            text-decoration: none;
            color: var(--p21sl-text);
            margin-bottom: 12px;
            font-size: 15px;
            transition: var(--p21sl-transition);
        }

        .p21sl-origin-group a:hover {
            color: var(--p21sl-primary-dark);
        }

        .p21sl-copyright {
            max-width: 1200px;
            margin: 30px auto 0;
            font-size: 13px;
            color: var(--p21sl-text-light);
            text-align: center;
        }

        @media (max-width: 768px) {
            .p21sl-orbit-links { display: none; }
            .p21sl-blaze h1 { font-size: 2.8rem; }
            .p21sl-nexus { flex-direction: column; }
            .p21sl-snap { margin-left: 0; margin-top: 16px; }
            .p21sl-origin-links { gap: 30px; flex-wrap: wrap; }
        }

.p21sl-hdr-drift {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.8;
    word-break: keep-all;
    color: var(--p21sl-dark);
}
.p21sl-hdr-drift,
.p21sl-hdr-drift *,
.p21sl-hdr-drift *::before,
.p21sl-hdr-drift *::after {
    box-sizing: border-box;
}

.p21sl-hdr-drift nav,
.p21sl-hdr-drift div,
.p21sl-hdr-drift section,
.p21sl-hdr-drift article,
.p21sl-hdr-drift aside,
.p21sl-hdr-drift p,
.p21sl-hdr-drift h1,
.p21sl-hdr-drift h2,
.p21sl-hdr-drift h3,
.p21sl-hdr-drift h4,
.p21sl-hdr-drift h5,
.p21sl-hdr-drift h6,
.p21sl-hdr-drift a {
    margin: 0;
    padding: 0;
    font: inherit;
    color: inherit;
    letter-spacing: inherit;
    line-height: inherit;
}

.p21sl-hdr-drift p,
.p21sl-hdr-drift h1,
.p21sl-hdr-drift h2,
.p21sl-hdr-drift h3,
.p21sl-hdr-drift h4,
.p21sl-hdr-drift h5,
.p21sl-hdr-drift h6 {
    text-decoration: none;
}

.p21sl-hdr-drift img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 0;
}

.p21sl-hdr-drift {
    box-shadow: none;
    filter: none;
    text-shadow: none;
    background-image: none;
    border-top: none;
    border-left: none;
    border-right: none;
    outline: none;
}

.p21sl-hdr-drift a[href="index.html"],
.p21sl-hdr-drift a[href="download.html"],
.p21sl-hdr-drift a[href="engine.html"],
.p21sl-hdr-drift a[href="sync.html"] {
    --aisite-shell-nav-padding: 0;
    --aisite-shell-nav-margin: 0;
    --aisite-shell-nav-line-height: normal;
    --aisite-shell-nav-display: inline;
    --aisite-shell-nav-height: auto;
    --aisite-shell-nav-min-height: auto;
}

.p21sl-hdr-drift a[href="index.html"],
.p21sl-hdr-drift a[href="index.html"]:hover,
.p21sl-hdr-drift a[href="index.html"]:focus,
.p21sl-hdr-drift a[href="index.html"]:active,
.p21sl-hdr-drift a[href="index.html"].active,
.p21sl-hdr-drift a[href="index.html"][aria-current="page"],
.p21sl-hdr-drift a[href="download.html"],
.p21sl-hdr-drift a[href="download.html"]:hover,
.p21sl-hdr-drift a[href="download.html"]:focus,
.p21sl-hdr-drift a[href="download.html"]:active,
.p21sl-hdr-drift a[href="download.html"].active,
.p21sl-hdr-drift a[href="download.html"][aria-current="page"],
.p21sl-hdr-drift a[href="engine.html"],
.p21sl-hdr-drift a[href="engine.html"]:hover,
.p21sl-hdr-drift a[href="engine.html"]:focus,
.p21sl-hdr-drift a[href="engine.html"]:active,
.p21sl-hdr-drift a[href="engine.html"].active,
.p21sl-hdr-drift a[href="engine.html"][aria-current="page"],
.p21sl-hdr-drift a[href="sync.html"],
.p21sl-hdr-drift a[href="sync.html"]:hover,
.p21sl-hdr-drift a[href="sync.html"]:focus,
.p21sl-hdr-drift a[href="sync.html"]:active,
.p21sl-hdr-drift a[href="sync.html"].active,
.p21sl-hdr-drift a[href="sync.html"][aria-current="page"] {
    background: transparent;
    border: none;
    border-bottom: none;
    box-shadow: none;
    outline: none;
    text-decoration: none;
    padding: var(--aisite-shell-nav-padding, 0);
    margin: var(--aisite-shell-nav-margin, 0);
    line-height: var(--aisite-shell-nav-line-height, normal);
    display: var(--aisite-shell-nav-display, inline);
    height: var(--aisite-shell-nav-height, auto);
    min-height: var(--aisite-shell-nav-min-height, auto);
}

.p21sl-hdr-drift{
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            backdrop-filter: blur(10px);
        }

.p21sl-hdr-drift .p21sl-hdr-orbit{
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 20px;
        }

.p21sl-hdr-drift .p21sl-hdr-logo{
            display: flex;
            align-items: center;
        }

.p21sl-hdr-drift .p21sl-hdr-logo img{
            height: 32px;
            width: auto;
        }

.p21sl-hdr-drift .p21sl-hdr-orbit-links{
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
        }

.p21sl-hdr-drift .p21sl-hdr-orbit-links a{
            text-decoration: none;
            color: #141915;
            font-weight: 600;
            font-size: 1rem;
            transition: 0.35s ease;
            position: relative;
        }

.p21sl-hdr-drift .p21sl-hdr-orbit-links a:hover, .p21sl-hdr-drift .p21sl-hdr-orbit-links a.active{
            color: #62e286;
        }

.p21sl-hdr-drift .p21sl-hdr-orbit-links a.active::after{
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 2px;
            background: #62e286;
        }

@media (max-width: 768px){.p21sl-hdr-drift .p21sl-hdr-orbit{
                padding: 1rem;
            }

.p21sl-hdr-drift .p21sl-hdr-orbit-links{
                display: none; 
            }}

.p21sl-hdr-drift {
    background: rgb(255, 255, 255);
    background-image: none;
}

.p21sl-ftr-trace {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.8;
    word-break: keep-all;
    color: var(--p21sl-dark);
}
.p21sl-ftr-trace,
.p21sl-ftr-trace *,
.p21sl-ftr-trace *::before,
.p21sl-ftr-trace *::after {
    box-sizing: border-box;
}

.p21sl-ftr-trace nav,
.p21sl-ftr-trace div,
.p21sl-ftr-trace section,
.p21sl-ftr-trace article,
.p21sl-ftr-trace aside,
.p21sl-ftr-trace p,
.p21sl-ftr-trace h1,
.p21sl-ftr-trace h2,
.p21sl-ftr-trace h3,
.p21sl-ftr-trace h4,
.p21sl-ftr-trace h5,
.p21sl-ftr-trace h6,
.p21sl-ftr-trace a {
    margin: 0;
    padding: 0;
    font: inherit;
    color: inherit;
    letter-spacing: inherit;
    line-height: inherit;
}

.p21sl-ftr-trace p,
.p21sl-ftr-trace h1,
.p21sl-ftr-trace h2,
.p21sl-ftr-trace h3,
.p21sl-ftr-trace h4,
.p21sl-ftr-trace h5,
.p21sl-ftr-trace h6 {
    text-decoration: none;
}

.p21sl-ftr-trace img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 0;
}

.p21sl-ftr-trace {
    box-shadow: none;
    filter: none;
    text-shadow: none;
    background-image: none;
    border-top: none;
    border-left: none;
    border-right: none;
    outline: none;
}

.p21sl-ftr-trace a,
.p21sl-ftr-trace a:hover,
.p21sl-ftr-trace a:focus,
.p21sl-ftr-trace a:active {
    background: transparent;
    box-shadow: none;
    outline: none;
    text-decoration: none;
}

.p21sl-ftr-trace{
            background: #141915;
            color: #ffffff;
            padding: 80px 0 40px;
        }

.p21sl-ftr-trace .p21sl-ftr-origin{
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
        }

.p21sl-ftr-trace .p21sl-ftr-origin-info{
            flex: 1;
            min-width: 300px;
        }

.p21sl-ftr-trace .p21sl-ftr-origin-info h3{
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
            color: #62e286;
        }

.p21sl-ftr-trace .p21sl-ftr-origin-links{
            flex: 2;
            display: flex;
            flex-wrap: wrap;
            gap: 60px;
        }

.p21sl-ftr-trace .p21sl-ftr-origin-group h4{
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

.p21sl-ftr-trace .p21sl-ftr-origin-group ul{
            list-style: none;
        }

.p21sl-ftr-trace .p21sl-ftr-origin-group ul li{
            margin-bottom: 0.8rem;
        }

.p21sl-ftr-trace .p21sl-ftr-origin-group ul li a{
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            transition: 0.35s ease;
        }

.p21sl-ftr-trace .p21sl-ftr-origin-group ul li a:hover{
            color: #62e286;
        }

.p21sl-ftr-trace .p21sl-ftr-copyright{
            width: 100%;
            margin-top: 60px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            color: rgba(255,255,255,0.4);
            font-size: 0.9rem;
        }