:root {
            --hue-primary: #a668d9;
            --hue-primary-dark: #8247b7;
            --hue-primary-light: #f3e8fc;
            --hue-accent: #6b3ba7;
            --hue-dark: #1e1528;
            --hue-slate: #4a3e56;
            --hue-muted: #6e627c;
            --hue-bg-surface: #ffffff;
            --hue-bg-alt: #f9f6fc;
            --hue-border: #ebdff7;
            --hue-shadow: rgba(166, 104, 217, 0.08);
            --hue-shadow-hover: rgba(130, 71, 183, 0.16);
            --radius-small: 6px;
            --radius-medium: 10px;
            --radius-large: 11px;
            --transition-standard: all 0.35s ease;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--hue-bg-surface);
            color: var(--hue-dark);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            word-break: break-word;
            overflow-wrap: break-word;
        }

        a {
            color: var(--hue-accent);
            text-decoration: none;
            transition: var(--transition-standard);
        }

        /* 顶部导航 Header */
        .seal {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--hue-border);
        }

        .hangar {
            width: 100%;
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .airway {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }

        .beak {
            display: flex;
            align-items: center;
            min-width: 0;
        }

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

        .rudder {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
        }

        .apex {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--hue-slate);
            border-radius: var(--radius-small);
            transition: var(--transition-standard);
        }

        .apex:hover {
            color: var(--hue-primary-dark);
            background-color: var(--hue-primary-light);
        }

        .apex.active {
            color: var(--hue-primary-dark);
            background-color: var(--hue-primary-light);
            font-weight: 600;
        }

        /* 统一内容区纵向间隔 */
        main {
            display: block;
        }

        .apogee,
        .canopy,
        .airspace,
        .strato {
            padding: 80px 0;
        }

        .apogee {
            background: linear-gradient(180deg, #fbf8fe 0%, #ffffff 100%);
            border-bottom: 1px solid var(--hue-border);
            padding-top: 60px;
        }

        /* Hero区: vertical_stack 结构 */
        .apogee-script {
            display: flex;
            flex-wrap: wrap;
            flex-direction: column;
            align-items: center;
            text-align: center;
            width: 100%;
            margin: 0 auto;
        }

        .dart {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background-color: var(--hue-primary-light);
            color: var(--hue-primary-dark);
            font-size: 14px;
            font-weight: 600;
            border-radius: 20px;
            margin-bottom: 24px;
            border: 1px solid rgba(166, 104, 217, 0.25);
        }

        .streak {
            font-size: 38px;
            line-height: 1.25;
            font-weight: 800;
            color: var(--hue-dark);
            letter-spacing: -0.5px;
            margin-bottom: 20px;
            white-space: normal;
            word-break: keep-all;
            max-width: 900px;
        }

        .flock {
            font-size: 18px;
            line-height: 1.75;
            color: var(--hue-muted);
            max-width: 820px;
            margin: 0 auto 32px auto;
        }

        .ply {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-bottom: 40px;
            width: 100%;
        }

        .thrust {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 34px;
            background: linear-gradient(135deg, var(--hue-primary) 0%, var(--hue-primary-dark) 100%);
            color: #ffffff;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-medium);
            box-shadow: 0 6px 20px rgba(166, 104, 217, 0.35);
            transition: var(--transition-standard);
            min-width: 0;
        }

        .thrust:hover {
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(166, 104, 217, 0.45);
        }

        .flick {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 30px;
            background-color: var(--hue-bg-surface);
            color: var(--hue-accent);
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-medium);
            border: 1.5px solid var(--hue-border);
            transition: var(--transition-standard);
            min-width: 0;
        }

        .flick:hover {
            background-color: var(--hue-primary-light);
            border-color: var(--hue-primary);
            transform: translateY(-2px);
        }

        .stream-ply {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px;
            margin-bottom: 44px;
            width: 100%;
        }

        .stream {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--hue-slate);
            font-weight: 500;
        }

        .feather {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
        }

        /* Full-width Stacked Image Container for vertical_stack */
        .beacon-script {
            width: 100%;
            max-width: 1060px;
            margin-top: 10px;
            border-radius: var(--radius-large);
            overflow: hidden;
            box-shadow: 0 20px 45px var(--hue-shadow-hover);
            border: 1px solid var(--hue-border);
            background-color: #ffffff;
        }

        .beacon {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }

        /* 核心能力区域 Capability */
        .canopy {
            background-color: var(--hue-bg-surface);
        }

        .streak-secondary {
            font-size: 30px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--hue-dark);
            margin-bottom: 16px;
            text-align: center;
        }

        .flock-subhead {
            font-size: 16px;
            color: var(--hue-muted);
            text-align: center;
            max-width: 760px;
            margin: 0 auto 50px auto;
        }

        .glider-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-bottom: 30px;
        }

        .glider {
            flex: 1 1 calc(33.333% - 24px);
            min-width: 280px;
            background: var(--hue-bg-alt);
            border: 1px solid var(--hue-border);
            border-radius: var(--radius-large);
            padding: 32px 28px;
            transition: var(--transition-standard);
            display: flex;
            flex-direction: column;
        }

        .glider:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px var(--hue-shadow);
            border-color: var(--hue-primary);
        }

        .feather-loft {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-medium);
            background: linear-gradient(135deg, var(--hue-primary-light) 0%, #ffffff 100%);
            border: 1px solid var(--hue-border);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .glider-streak {
            font-size: 20px;
            font-weight: 700;
            color: var(--hue-dark);
            margin-bottom: 12px;
        }

        .glider-flock {
            font-size: 15px;
            color: var(--hue-muted);
            line-height: 1.65;
            flex-grow: 1;
        }

        /* 架构与证明 Proof section */
        .airspace {
            background-color: var(--hue-bg-alt);
            border-top: 1px solid var(--hue-border);
            border-bottom: 1px solid var(--hue-border);
        }

        .crease-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 40px;
        }

        .crease {
            flex: 1 1 calc(33.333% - 24px);
            min-width: 280px;
            background: #ffffff;
            border: 1px solid var(--hue-border);
            border-radius: var(--radius-large);
            padding: 30px;
            position: relative;
            transition: var(--transition-standard);
        }

        .crease:hover {
            border-color: var(--hue-primary);
            box-shadow: 0 10px 25px var(--hue-shadow-hover);
        }

        .crease-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--hue-primary);
            line-height: 1;
            margin-bottom: 12px;
            display: block;
        }

        .crease-streak {
            font-size: 18px;
            font-weight: 700;
            color: var(--hue-dark);
            margin-bottom: 10px;
        }

        .crease-flock {
            font-size: 14px;
            color: var(--hue-muted);
            line-height: 1.6;
        }

        /* 全站功能索引 Acquire Section */
        .strato {
            background-color: var(--hue-bg-surface);
        }

        .leaflet-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 40px;
        }

        .leaflet {
            flex: 1 1 calc(50% - 20px);
            min-width: 300px;
            background: #ffffff;
            border: 1px solid var(--hue-border);
            border-radius: var(--radius-medium);
            padding: 24px;
            display: flex;
            align-items: flex-start;
            gap: 18px;
            transition: var(--transition-standard);
        }

        .leaflet:hover {
            border-color: var(--hue-primary);
            box-shadow: 0 8px 24px var(--hue-shadow);
            transform: translateY(-2px);
        }

        .impulse-feather {
            width: 44px;
            height: 44px;
            background-color: var(--hue-primary-light);
            border-radius: var(--radius-small);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .leaflet-body {
            flex-grow: 1;
            min-width: 0;
        }

        .leaflet-streak {
            font-size: 17px;
            font-weight: 700;
            color: var(--hue-dark);
            margin-bottom: 6px;
        }

        .leaflet-flock {
            font-size: 14px;
            color: var(--hue-muted);
            line-height: 1.5;
            margin-bottom: 10px;
        }

        .impulse-apex {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--hue-primary-dark);
        }

        .impulse-apex:hover {
            color: var(--hue-accent);
        }

        /* 深度文字介绍与SEO支持 */
        .narrative-block {
            margin-top: 60px;
            padding: 36px;
            background: var(--hue-bg-alt);
            border-radius: var(--radius-large);
            border: 1px solid var(--hue-border);
        }

        .narrative-streak {
            font-size: 22px;
            font-weight: 700;
            color: var(--hue-dark);
            margin-bottom: 14px;
        }

        .narrative-flock {
            font-size: 15px;
            color: var(--hue-slate);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .narrative-flock:last-child {
            margin-bottom: 0;
        }

        /* 页脚 Footer */
        .tarmac {
            background-color: var(--hue-dark);
            color: #d1c7dc;
            padding: 60px 0 30px 0;
            border-top: 1px solid #332642;
        }

        .landing-ply {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
            margin-bottom: 40px;
        }

        .landing-col {
            flex: 1 1 240px;
            min-width: 0;
        }

        .landing-brand {
            font-size: 22px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }

        .landing-desc {
            font-size: 14px;
            color: #9e8fae;
            line-height: 1.65;
            margin-bottom: 20px;
        }

        .landing-streak {
            font-size: 16px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
        }

        .landing-rudder {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .landing-apex {
            color: #b3a5c4;
            font-size: 14px;
            transition: var(--transition-standard);
        }

        .landing-apex:hover {
            color: #ffffff;
            padding-left: 4px;
        }

        .horizon {
            border-top: 1px solid #2e213b;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 13px;
            color: #837494;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .glider {
                flex: 1 1 calc(50% - 24px);
            }
            .crease {
                flex: 1 1 calc(50% - 24px);
            }
        }

        @media (max-width: 768px) {
            .apogee, .canopy, .airspace, .strato {
                padding: 50px 0;
            }

            .streak {
                font-size: 26px;
            }

            .flock {
                font-size: 16px;
            }

            .streak-secondary {
                font-size: 22px;
            }

            .airway {
                height: auto;
                padding: 16px 0;
                gap: 12px;
            }

            .rudder {
                width: 100%;
                justify-content: flex-start;
                overflow-x: auto;
                padding-bottom: 4px;
            }

            .apex {
                padding: 6px 12px;
                font-size: 14px;
                white-space: nowrap;
            }

            .glider,
            .crease,
            .leaflet {
                flex: 1 1 100%;
            }

            .narrative-block {
                padding: 24px;
            }
        }