:root {
            --primary: #ec608f;
            --primary-hover: #d84b7a;
            --primary-soft: rgba(236, 96, 143, 0.08);
            --primary-border: rgba(236, 96, 143, 0.2);
            --dark: #1f1a1c;
            --subtle: #6b6367;
            --bg: #fcf8f9;
            --card-bg: #ffffff;
            --radius: 12px;
            --transition: 0.15s 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(--bg);
            color: var(--dark);
            line-height: 1.7;
            word-break: break-word;
            overflow-wrap: break-word;
            -webkit-font-smoothing: antialiased;
        }

        .envelope {
            width: 100%;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        /* 头部样式 */
        .vista {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--primary-border);
            position: sticky;
            top: 0;
            z-index: 100;
        }

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

        .nose {
            display: flex;
            align-items: center;
        }

        .nose img {
            height: 40px;
            width: auto;
            display: block;
        }

        .vector {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 24px;
        }

        .rudder {
            color: var(--dark);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: color var(--transition);
            padding: 6px 0;
            position: relative;
        }

        .rudder:hover,
        .rudder.active {
            color: var(--primary);
        }

        .rudder.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }

        .thrust {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #ffffff;
            font-weight: 600;
            padding: 12px 26px;
            border-radius: var(--radius);
            text-decoration: none;
            transition: all var(--transition);
            box-shadow: 0 4px 12px rgba(236, 96, 143, 0.25);
            border: 1px solid transparent;
            cursor: pointer;
            text-align: center;
        }

        .thrust:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(236, 96, 143, 0.35);
        }

        .propel {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #ffffff;
            color: var(--dark);
            font-weight: 600;
            padding: 12px 26px;
            border-radius: var(--radius);
            text-decoration: none;
            transition: all var(--transition);
            border: 1px solid var(--primary-border);
            cursor: pointer;
        }

        .propel:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
        }

        /* 主体骨架 */
        .skybox {
            flex: 1;
        }

        /* HERO - text_dominant */
        .launch {
            padding: 80px 0 60px 0;
            text-align: center;
            background: radial-gradient(circle at 50% 20%, rgba(236, 96, 143, 0.08) 0%, rgba(252, 248, 249, 0) 70%);
        }

        .launch .fin {
            font-size: clamp(2.5rem, 6vw, 4.5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.15;
            color: var(--dark);
            margin-bottom: 24px;
            white-space: normal;
        }

        .launch .fin span {
            color: var(--primary);
        }

        .launch .apex {
            max-width: 820px;
            margin: 0 auto 36px auto;
            font-size: 1.15rem;
            color: var(--subtle);
            line-height: 1.8;
        }

        .flick {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-bottom: 48px;
        }

        .feather {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 32px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px dashed var(--primary-border);
        }

        .trail {
            display: flex;
            align-items: center;
            gap: 10px;
            min-width: 0;
            color: var(--subtle);
            font-size: 0.95rem;
        }

        .crease {
            width: 24px;
            height: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            flex-shrink: 0;
        }

        .fleet {
            width: 100%;
            max-width: 960px;
            height: auto;
            border-radius: 16px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
            border: 1px solid var(--primary-border);
            margin: 40px auto 0 auto;
            display: block;
        }

        /* 核心支柱区块 (capability) */
        .zenith {
            padding: 80px 0;
            background: #ffffff;
            border-top: 1px solid rgba(0, 0, 0, 0.03);
            border-bottom: 1px solid rgba(0, 0, 0, 0.03);
        }

        .flap {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 60px auto;
        }

        .flap .fin {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--dark);
        }

        .flap .apex {
            color: var(--subtle);
            font-size: 1.05rem;
        }

        .emblem {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 28px;
        }

        .origami {
            background: var(--bg);
            border: 1px solid var(--primary-border);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: transform var(--transition), box-shadow var(--transition);
            min-width: 0;
        }

        .origami:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px rgba(236, 96, 143, 0.12);
        }

        .origami .crease {
            width: 48px;
            height: 48px;
            background: var(--primary-soft);
            border-radius: 10px;
            margin-bottom: 20px;
            padding: 10px;
        }

        .origami .fin {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--dark);
        }

        .origami .apex {
            font-size: 0.95rem;
            color: var(--subtle);
            line-height: 1.7;
        }

        /* 导览与多端分流 (acquire) */
        .updraft {
            padding: 80px 0;
        }

        .glider {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
            margin-top: 48px;
        }

        .biplane {
            background: #ffffff;
            border-radius: var(--radius);
            padding: 30px;
            border: 1px solid var(--primary-border);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: all var(--transition);
            min-width: 0;
        }

        .biplane:hover {
            border-color: var(--primary);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
        }

        .biplane .fin {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--dark);
        }

        .biplane .apex {
            font-size: 0.95rem;
            color: var(--subtle);
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .biplane .rudder {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            text-decoration: none;
            font-size: 0.95rem;
        }

        .biplane .rudder:hover {
            text-decoration: underline;
        }

        /* 安全防护与证明 (proof) */
        .proof-box {
            padding: 80px 0;
            background: #ffffff;
        }

        .proof-layout {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            align-items: center;
        }

        .proof-col {
            flex: 1 1 480px;
            min-width: 0;
        }

        .proof-col .fin {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.3;
        }

        .proof-col .apex {
            font-size: 1.05rem;
            color: var(--subtle);
            margin-bottom: 24px;
        }

        .origami-draft {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .origami-trail {
            background: var(--bg);
            padding: 20px 24px;
            border-radius: var(--radius);
            border-left: 4px solid var(--primary);
        }

        .origami-trail h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--dark);
        }

        .origami-trail p {
            font-size: 0.9rem;
            color: var(--subtle);
            margin: 0;
        }

        /* 专题编辑线索 (aside) */
        .guide-aside {
            padding: 60px 0;
            background: var(--primary-soft);
            border-top: 1px solid var(--primary-border);
            border-bottom: 1px solid var(--primary-border);
        }

        .aside-flap {
            background: #ffffff;
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: 0 10px 30px rgba(236, 96, 143, 0.08);
        }

        .aside-flap .fin {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .aside-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 24px;
        }

        .aside-rudder {
            padding: 16px;
            background: var(--bg);
            border-radius: 8px;
            text-decoration: none;
            color: var(--dark);
            transition: all var(--transition);
            border: 1px solid transparent;
            display: block;
        }

        .aside-rudder:hover {
            border-color: var(--primary-border);
            background: #ffffff;
            transform: translateY(-2px);
        }

        .aside-rudder strong {
            display: block;
            font-size: 1rem;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .aside-rudder span {
            font-size: 0.85rem;
            color: var(--subtle);
        }

        /* 页脚 */
        .landing {
            background: var(--dark);
            color: #ffffff;
            padding: 70px 0 30px 0;
            margin-top: auto;
        }

        .hangar {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            justify-content: space-between;
            margin-bottom: 48px;
        }

        .tarmac {
            flex: 1 1 300px;
            min-width: 0;
        }

        .tarmac .fin {
            font-size: 1.5rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
            display: block;
        }

        .tarmac .apex {
            color: #a0979b;
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .links-emblem {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
        }

        .links-col {
            display: flex;
            flex-direction: column;
            gap: 12px;
            min-width: 140px;
        }

        .links-col h5 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .links-col a {
            color: #a0979b;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color var(--transition);
        }

        .links-col a:hover {
            color: var(--primary);
        }

        .stamp {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 28px;
            text-align: center;
        }

        .stamp .apex {
            color: #7a7175;
            font-size: 0.85rem;
        }

        /* 响应式断点 */
        @media (max-width: 768px) {
            .vista .airspace {
                height: auto;
                padding-top: 16px;
                padding-bottom: 16px;
                gap: 16px;
            }

            .vector {
                width: 100%;
                justify-content: space-between;
                gap: 12px;
                order: 3;
            }

            .rudder {
                font-size: 0.85rem;
            }

            .launch {
                padding: 50px 0 40px 0;
            }

            .feather {
                flex-direction: column;
                align-items: center;
                gap: 16px;
            }

            .proof-layout {
                flex-direction: column;
            }

            .hangar {
                flex-direction: column;
                gap: 32px;
            }
        }