/* 深色科技风 · 终端美学 · 决策宇宙 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background: #0a0f1a;
            color: #e3e9f5;
            font-family: 'Inter', 'SF Mono', 'Menlo', 'Monaco', 'Cascadia Code', 'Consolas', monospace;
            line-height: 1.5;
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        /* 流动网格背景 (科技感) */
        body::before {
            content: "";
            position: fixed;
            top: 0; left: 0; width: 100%; height: 100%;
            background-image: 
                linear-gradient(rgba(16, 185, 129, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(16, 185, 129, 0.05) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            z-index: 0;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 2;
        }

        /* ----- 导航栏 · 终端风格 ----- */
        header {
            background: rgba(8, 14, 23, 0.85);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid #1e3a5f;
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-flex {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 12px 0;
        }

        .logo-area h1 {
            font-size: 1.9rem;
            font-weight: 700;
            background: linear-gradient(135deg, #a0e9ff, #4f9cf7, #6ee7b7);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            letter-spacing: -0.02em;
            text-shadow: 0 0 12px rgba(37,99,235,0.3);
        }

        .logo-area p {
            font-size: 0.7rem;
            color: #7f9bc2;
            margin-top: 4px;
            font-weight: 400;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .nav-links {
            display: flex;
            gap: 1.8rem;
            align-items: center;
            flex-wrap: wrap;
        }

        .nav-links a {
            text-decoration: none;
            font-weight: 530;
            color: #b0caf0;
            transition: all 0.15s;
            font-size: 0.9rem;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            font-family: inherit;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: #6ee7b7;
            border-bottom-color: #2dd4bf;
            text-shadow: 0 0 6px #14b8a6;
        }

        /* ----- Hero · 终端叙事 ----- */
        .hero-decision {
            text-align: center;
            padding: 56px 0 36px;
        }

        .badge-2026 {
            display: inline-block;
            background: #0f2840;
            color: #7ad0ff;
            padding: 6px 20px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 24px;
            border: 1px solid #2d5f8b;
            backdrop-filter: blur(4px);
            box-shadow: 0 0 15px #1e4b6e33;
            letter-spacing: 0.3px;
        }

        .hero-decision h2 {
            font-size: 3.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, #c4e6ff, #7dd3fc, #6ee7b7);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            margin-bottom: 16px;
            line-height: 1.2;
            text-shadow: 0 0 25px #0e7490;
        }

        .terminal-quote {
            font-family: 'SF Mono', monospace;
            color: #9ab3d0;
            background: #0f1a26cc;
            display: inline-block;
            padding: 10px 26px;
            border-radius: 40px;
            border: 1px solid #1e4970;
            backdrop-filter: blur(6px);
            font-size: 1.1rem;
            box-shadow: 0 0 18px #00000030;
        }

        .terminal-quote i {
            color: #2dd4bf;
            font-style: normal;
        }

        /* ----- 核心能力卡片 (三块) ----- */
        .capability-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin: 50px 0 40px;
        }

        .cap-card {
            background: rgba(12, 22, 34, 0.7);
            backdrop-filter: blur(12px);
            border: 1px solid #1e405b;
            border-radius: 36px;
            padding: 32px 22px;
            box-shadow: 0 20px 30px -10px #0000004d, 0 0 0 1px #1e497033 inset;
            transition: all 0.2s;
            text-align: center;
        }

        .cap-card:hover {
            border-color: #2dd4bf;
            box-shadow: 0 0 28px #14b8a640, 0 0 0 1px #2dd4bf inset;
            transform: translateY(-4px);
        }

        .cap-emoji {
            font-size: 3rem;
            margin-bottom: 18px;
            filter: drop-shadow(0 0 10px #38bdf8);
        }

        .cap-card h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            background: linear-gradient(145deg, #e0f2fe, #bae6fd);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
        }

        .cap-desc {
            color: #aac7e0;
            font-size: 0.95rem;
            opacity: 0.9;
        }

        /* ----- 生态入口 · 传送门网格 (权重中心核心) ----- */
        .section-label {
            display: flex;
            align-items: center;
            gap: 14px;
            margin: 56px 0 28px;
        }

        .section-label span {
            font-size: 1.6rem;
            font-weight: 650;
            color: #cbdffc;
            letter-spacing: -0.3px;
        }

        .section-label .line {
            flex: 1;
            height: 2px;
            background: linear-gradient(90deg, #1e4970, transparent);
        }

        .portal-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }

        .portal-card {
            background: #0e1a26e0;
            backdrop-filter: blur(8px);
            border: 1px solid #254a66;
            border-radius: 28px;
            padding: 28px 18px 22px;
            transition: 0.2s;
            text-decoration: none;
            color: inherit;
            display: block;
            box-shadow: 0 15px 25px -12px #00000080;
        }

        .portal-card:hover {
            border-color: #2dd4bf;
            background: #122b3fe0;
            box-shadow: 0 0 25px #0e7490, 0 8px 20px #00000060;
            transform: translateY(-5px);
        }

        .portal-icon {
            font-size: 2.8rem;
            margin-bottom: 16px;
        }

        .portal-card h4 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #e2f0ff;
        }

        .portal-badge {
            display: inline-block;
            background: #1e4b6e;
            padding: 4px 12px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            color: #a5f3fc;
            margin: 8px 0 12px;
            border: 1px solid #2e7a9c;
        }

        .portal-desc {
            color: #b0cee8;
            font-size: 0.9rem;
        }

        /* 智能推荐条 (简约) */
        .smart-rec {
            background: linear-gradient(105deg, #102433f0 0%, #0b1a2bf0 100%);
            border-radius: 48px;
            padding: 28px 36px;
            margin: 40px 0 30px;
            border: 1px solid #28648b;
            box-shadow: 0 0 30px #00000055, 0 0 0 1px #1f6080 inset;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            backdrop-filter: blur(8px);
        }

        .rec-left h3 {
            font-size: 2rem;
            font-weight: 700;
            color: #d9efff;
        }

        .rec-highlight {
            color: #5eead4;
            text-shadow: 0 0 12px #14b8a6;
        }

        .rec-meta {
            color: #9bb9da;
            margin-top: 8px;
            font-size: 1rem;
        }

        .rec-right .download-glow {
            background: #0f2b4b;
            border: 1.5px solid #2dd4bf;
            color: #ecfdf5;
            padding: 16px 40px;
            border-radius: 60px;
            font-weight: 700;
            font-size: 1.3rem;
            text-decoration: none;
            display: inline-block;
            box-shadow: 0 0 22px #14b8a6, 0 8px 18px #00000055;
            transition: 0.2s;
            cursor: pointer;
        }

        .download-glow:hover {
            background: #1e4f7a;
            box-shadow: 0 0 32px #2dd4bf, 0 8px 22px #000;
            transform: scale(1.02);
        }

        /* 下载号召区 (返回下载区域) */
        .cta-terminal {
            background: #07131e;
            border-radius: 48px;
            padding: 48px 30px;
            margin: 70px 0 40px;
            text-align: center;
            border: 1px solid #1a4b6d;
            box-shadow: 0 0 35px #00000099, inset 0 0 30px #0a1e2e;
        }

        .cta-terminal h3 {
            font-size: 2.6rem;
            font-weight: 750;
            color: #d6ecff;
            margin-bottom: 16px;
        }

        .cta-terminal p {
            color: #aac2db;
            max-width: 600px;
            margin: 0 auto 28px;
            font-size: 1.1rem;
        }

        .btn-cyber {
            background: transparent;
            border: 2px solid #2dd4bf;
            color: #b9f3f0;
            padding: 16px 52px;
            border-radius: 60px;
            font-weight: 700;
            font-size: 1.4rem;
            text-decoration: none;
            display: inline-block;
            transition: 0.2s;
            box-shadow: 0 0 18px #14b8a6;
            backdrop-filter: blur(8px);
            cursor: pointer;
        }

        .btn-cyber:hover {
            background: #14b8a6;
            color: #020c14;
            border-color: #a5f3fc;
            box-shadow: 0 0 40px #2dd4bf;
        }

        /* footer */
        footer {
            background: #050b12f0;
            backdrop-filter: blur(8px);
            color: #9bb9da;
            padding: 40px 0 24px;
            margin-top: 40px;
            border-top: 1px solid #153e5a;
        }

        .footer-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 32px;
        }

        .footer-copyright {
            text-align: center;
            padding-top: 28px;
            font-size: 0.85rem;
            border-top: 1px solid #1a405a;
            margin-top: 20px;
        }

        a {
            color: #b0d4fc;
            text-decoration: none;
        }

        /* 响应式 */
        @media (max-width: 900px) {
            .capability-grid, .portal-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .smart-rec {
                flex-direction: column;
                text-align: center;
                gap: 20px;
            }
        }

        @media (max-width: 600px) {
            .capability-grid, .portal-grid {
                grid-template-columns: 1fr;
            }
            .header-flex {
                flex-direction: column;
                gap: 12px;
            }
            .nav-links {
                gap: 1rem;
                justify-content: center;
            }
        }

        /* 终端闪烁效果 */
        .cursor-blink {
            display: inline-block;
            width: 10px;
            height: 1.2rem;
            background: #2dd4bf;
            margin-left: 6px;
            animation: blink 1s infinite;
        }
        @keyframes blink { 0%,100%{opacity:1;} 50%{opacity:0;} }