:root {
            --prime: #ed7357;
            --prime-hover: #d95e42;
            --prime-light: rgba(237, 115, 87, 0.08);
            --dark: #1e242b;
            --dark-soft: #2d3540;
            --slate: #5a6573;
            --light: #fbf9f8;
            --white: #ffffff;
            --border: #ece6e2;
            --border-hover: #dbd2cb;
            --radius-sm: 9px;
            --radius-md: 12px;
            --radius-lg: 15px;
            --shadow: 0 4px 20px rgba(30, 36, 43, 0.06);
            --shadow-hover: 0 10px 30px rgba(237, 115, 87, 0.12);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        /* 布局主容器 */
        .chassis {
            width: 100%;
            overflow-x: hidden;
        }

        /* 顶部导航与品牌标头 */
        .notch {
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .matrix {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }

        .dit {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            min-width: 0;
        }

        .dit img {
            height: 38px;
            width: auto;
            display: block;
        }

        .wire {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            min-width: 0;
        }

        .dah {
            color: var(--dark-soft);
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            transition: all 0.35s ease;
            word-break: keep-all;
        }

        .dah:hover {
            color: var(--prime);
            background-color: var(--prime-light);
        }

        .dah.active {
            color: var(--prime);
            background-color: var(--prime-light);
            font-weight: 600;
        }

        /* Hero 区域：reverse_split 左主视角大图/数据UI + 右侧文本 */
        .spark {
            position: relative;
            background: linear-gradient(135deg, #ffffff 0%, #f6f2ef 100%);
            border-bottom: 1px solid var(--border);
            padding: 48px 0;
            overflow: hidden;
        }

        .conduit {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
        }

        /* 左侧主导UI界面渲染区 (58% width) */
        .crest {
            flex: 0 0 58%;
            max-width: 58%;
            min-width: 0;
            padding-right: 40px;
        }

        /* 右侧狭长文字区 (42% width) */
        .knob {
            flex: 0 0 42%;
            max-width: 42%;
            min-width: 0;
            padding: 0 32px 0 12px;
        }

        /* 模拟 Telegram Data UI 仪表盘界面 (UI Carrier) */
        .cipher-slip {
            background: var(--dark);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: #ffffff;
            position: relative;
        }

        .cipher-notch {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 20px;
        }

        .cipher-digit {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 600;
            color: #d1d5db;
        }

        .status-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(46, 204, 113, 0.15);
            color: #2ecc71;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            background-color: #2ecc71;
            border-radius: 50%;
        }

        .ui-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .ui-slip {
            flex: 1 1 calc(50% - 8px);
            min-width: 0;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 16px;
            transition: transform 0.35s ease;
        }

        .ui-slip:hover {
            transform: translateY(-2px);
            background: rgba(255, 255, 255, 0.07);
        }

        .ui-slip-optic {
            font-size: 12px;
            color: #9ca3af;
            margin-bottom: 6px;
        }

        .ui-slip-val {
            font-size: 18px;
            font-weight: 700;
            color: #ffffff;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .ui-slip-sub {
            font-size: 11px;
            color: var(--prime);
            margin-top: 4px;
        }

        .lang-box {
            margin-top: 16px;
            background: linear-gradient(90deg, rgba(237, 115, 87, 0.15) 0%, rgba(237, 115, 87, 0.05) 100%);
            border: 1px solid rgba(237, 115, 87, 0.3);
            border-radius: var(--radius-md);
            padding: 16px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }

        .lang-desc {
            font-size: 13px;
            color: #e5e7eb;
        }

        .lang-desc strong {
            color: var(--prime);
        }

        .lang-keyer {
            background: var(--prime);
            color: #ffffff;
            font-size: 13px;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: background 0.35s ease;
        }

        .lang-keyer:hover {
            background: var(--prime-hover);
        }

        /* 标头文字排版 */
        .digit-chassis {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 18px;
            letter-spacing: -0.02em;
            word-break: keep-all;
            white-space: normal;
        }

        .nodule-lead {
            font-size: 16px;
            color: var(--slate);
            margin-bottom: 28px;
            line-height: 1.7;
            word-break: break-word;
        }

        .tail-keyer {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 24px;
        }

        .keyer-prime {
            background: var(--prime);
            color: #ffffff;
            font-size: 16px;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            text-decoration: none;
            box-shadow: 0 8px 18px rgba(237, 115, 87, 0.28);
            transition: all 0.35s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .keyer-prime:hover {
            background: var(--prime-hover);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(237, 115, 87, 0.35);
        }

        .keyer-sub {
            background: #ffffff;
            color: var(--dark-soft);
            border: 1px solid var(--border);
            font-size: 16px;
            font-weight: 600;
            padding: 14px 24px;
            border-radius: var(--radius-md);
            text-decoration: none;
            transition: all 0.35s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .keyer-sub:hover {
            border-color: var(--prime);
            color: var(--prime);
            background: var(--prime-light);
        }

        .glyph-glyph {
            width: 20px;
            height: 20px;
            fill: currentColor;
            flex-shrink: 0;
        }

        /* 规则 2: 核心服务快速直达 (<div id="capabilities">) */
        .harness-grid {
            max-width: 1320px;
            margin: 64px auto;
            padding: 0 24px;
        }

        .digit-sec {
            font-size: 28px;
            font-weight: 700;
            color: var(--dark);
            text-align: center;
            margin-bottom: 12px;
            word-break: keep-all;
        }

        .nodule-sec {
            font-size: 15px;
            color: var(--slate);
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px auto;
            word-break: break-word;
        }

        .tail-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .slip-slip {
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            transition: all 0.35s ease;
            box-shadow: var(--shadow);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .slip-slip:hover {
            border-color: var(--prime);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .glyph-optic {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: var(--prime-light);
            color: var(--prime);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .digit-slip {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
            word-break: keep-all;
        }

        .nodule-slip {
            font-size: 14px;
            color: var(--slate);
            line-height: 1.6;
            margin-bottom: 24px;
            word-break: break-word;
        }

        .tap-dah {
            color: var(--prime);
            font-weight: 600;
            font-size: 14px;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: auto;
        }

        .tap-dah:hover {
            color: var(--prime-hover);
            text-decoration: underline;
        }

        /* 规则 3: 全平台客户端版本面板 (<article id="comparison">) */
        .harness-board {
            background: #ffffff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 64px 0;
        }

        .conduit-inner {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .board-matrix {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .cipher-sounder {
            background: var(--light);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            position: relative;
        }

        .cipher-optic {
            position: absolute;
            top: 24px;
            right: 24px;
            font-size: 12px;
            font-weight: 600;
            background: #e8f8f0;
            color: #27ae60;
            padding: 4px 10px;
            border-radius: 20px;
        }

        .digit-board {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sounder-wire {
            list-style: none;
            margin: 20px 0;
        }

        .sounder-sounder {
            font-size: 14px;
            color: var(--dark-soft);
            padding: 8px 0;
            border-bottom: 1px dashed var(--border);
            display: flex;
            justify-content: space-between;
        }

        .sounder-sounder span:first-child {
            color: var(--slate);
        }

        .sounder-sounder span:last-child {
            font-weight: 600;
        }

        /* 规则 4: 新手入门与安全提示 (<section id="steps">) */
        .harness-guide {
            max-width: 1320px;
            margin: 64px auto;
            padding: 0 24px;
        }

        .guide-layout {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-top: 40px;
        }

        .guide-step-col {
            flex: 1 1 500px;
            min-width: 0;
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow);
        }

        .guide-step-box {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 24px;
        }

        .step-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--prime);
            color: #ffffff;
            font-weight: 700;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .step-crest {
            flex: 1;
            min-width: 0;
        }

        .digit-step {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 4px;
        }

        .nodule-step {
            font-size: 14px;
            color: var(--slate);
            line-height: 1.6;
        }

        .security-slip {
            background: #fff8f6;
            border: 1px solid rgba(237, 115, 87, 0.25);
            border-radius: var(--radius-lg);
            padding: 32px;
            flex: 1 1 400px;
            min-width: 0;
        }

        .digit-sec-warn {
            font-size: 18px;
            font-weight: 700;
            color: var(--prime-hover);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nodule-sec-p {
            font-size: 14px;
            color: var(--dark-soft);
            margin-bottom: 16px;
            line-height: 1.6;
        }

        /* SEO 长文本承接段落 */
        .seo-longform {
            max-width: 1320px;
            margin: 48px auto 64px auto;
            padding: 0 24px;
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 40px;
        }

        .seo-digit {
            font-size: 22px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .seo-p {
            font-size: 14px;
            color: var(--slate);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        /* 页脚区域 (<section role="contentinfo">) */
        .ground {
            background: var(--dark);
            color: #a0aec0;
            padding: 56px 0 32px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .term {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .signoff-brand {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .signoff-desc {
            font-size: 13px;
            line-height: 1.6;
            color: #94a3b8;
        }

        .folio-digit {
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
        }

        .folio-links {
            list-style: none;
        }

        .folio-links li {
            margin-bottom: 10px;
        }

        .folio-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.35s ease;
        }

        .folio-links a:hover {
            color: var(--prime);
        }

        .signoff-bottom {
            max-width: 1320px;
            margin: 0 auto;
            padding: 24px 24px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: #64748b;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .crest {
                flex: 0 0 100%;
                max-width: 100%;
                padding-right: 0;
                margin-bottom: 40px;
            }
            .knob {
                flex: 0 0 100%;
                max-width: 100%;
                padding: 0;
            }
        }

        @media (max-width: 768px) {
            .matrix {
                height: auto;
                padding: 16px;
            }
            .wire {
                width: 100%;
                justify-content: flex-start;
                margin-top: 12px;
                overflow-x: auto;
                padding-bottom: 6px;
            }
            .digit-chassis {
                font-size: 28px;
            }
            .ui-slip {
                flex: 1 1 100%;
            }
            .tail-keyer {
                flex-direction: column;
            }
            .keyer-prime, .keyer-sub {
                width: 100%;
                justify-content: center;
            }
        }

.relay-notch{
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid #ece6e2;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

.relay-notch .relay-matrix{
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }

.relay-notch .relay-dit{
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            min-width: 0;
        }

.relay-notch .relay-dit img{
            height: 38px;
            width: auto;
            display: block;
        }

.relay-notch .relay-wire{
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            min-width: 0;
        }

.relay-notch .relay-dah{
            color: #2d3540;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 9px;
            transition: all 0.35s ease;
            word-break: keep-all;
        }

.relay-notch .relay-dah:hover{
            color: #ed7357;
            background-color: rgba(237, 115, 87, 0.08);
        }

.relay-notch .relay-dah.active{
            color: #ed7357;
            background-color: rgba(237, 115, 87, 0.08);
            font-weight: 600;
        }

@media (max-width: 768px){.relay-notch .relay-matrix{
                height: auto;
                padding: 16px;
            }

.relay-notch .relay-wire{
                width: 100%;
                justify-content: flex-start;
                margin-top: 12px;
                overflow-x: auto;
                padding-bottom: 6px;
            }}

.relay-notch {
    background: rgb(255, 255, 255);
    background-image: none;
}

.ground-ground {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    line-height: 1.7;
    color: var(--dark);
}
.ground-ground,
.ground-ground *,
.ground-ground *::before,
.ground-ground *::after {
    box-sizing: border-box;
}

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

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

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

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

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

.ground-ground{
            background: #1e242b;
            color: #a0aec0;
            padding: 56px 0 32px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

.ground-ground .ground-term{
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

.ground-ground .ground-signoff-brand{
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }

.ground-ground .ground-signoff-desc{
            font-size: 13px;
            line-height: 1.6;
            color: #94a3b8;
        }

.ground-ground .ground-folio-digit{
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
        }

.ground-ground .ground-folio-links{
            list-style: none;
        }

.ground-ground .ground-folio-links li{
            margin-bottom: 10px;
        }

.ground-ground .ground-folio-links a{
            color: #94a3b8;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.35s ease;
        }

.ground-ground .ground-folio-links a:hover{
            color: #ed7357;
        }

.ground-ground .ground-signoff-bottom{
            max-width: 1320px;
            margin: 0 auto;
            padding: 24px 24px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: #64748b;
        }