/* ================= 基础设计变量 ================= */
        :root {
            --ink: #050810;
            --ink-2: #080D19;
            --panel: #0C1526;
            --panel-2: #101C31;
            --line: rgba(148, 178, 220, .16);
            --line-soft: rgba(148, 178, 220, .09);
            --text: #EDF4FF;
            --muted: #9FB0C9;
            --muted-2: #7E90AA;
            --cyan: #22D3EE;
            --green: #4ADE80;
            --amber: #FBBF24;
            --grad: linear-gradient(120deg, #22D3EE 0%, #4ADE80 100%);
            --grad-text: linear-gradient(100deg, #67E8F9 0%, #86EFAC 100%);
            --light: #F3F7FD;
            --light-2: #EAF1FA;
            --dark: #0B1424;
            --dark-muted: #54637B;
            --radius-lg: 24px;
            --radius: 18px;
            --radius-sm: 10px;
            --ease: cubic-bezier(.22, .61, .36, 1);
            --shadow-card: 0 30px 60px -30px rgba(0, 10, 30, .65);
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
            background: var(--ink);
            color: var(--text);
            line-height: 1.7;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; display: block; }
        a { color: inherit; text-decoration: none; }
        ul, ol { list-style: none; }
        button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
        summary { cursor: pointer; }
        :focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }
        section[id] { scroll-margin-top: 92px; }
        .container { width: 100%; max-width: 1220px; margin: 0 auto; padding: 0 28px; }
        .svg-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
        .icon {
            display: inline-block; flex: none; width: 1em; height: 1em;
            fill: none; stroke: currentColor; stroke-width: 1.8;
            stroke-linecap: round; stroke-linejoin: round;
        }
        .visually-hidden {
            position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
            overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0;
        }
        .skip-link {
            position: fixed; left: 16px; top: -80px; z-index: 200;
            padding: 10px 18px; border-radius: 10px;
            background: var(--grad); color: #03242C; font-size: 14px; font-weight: 700;
            transition: top .2s var(--ease);
        }
        .skip-link:focus { top: 14px; }
        main:focus { outline: none; }

        /* ================= 按钮 ================= */
        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 9px;
            min-height: 50px; padding: 0 26px; border-radius: 12px;
            border: 1px solid transparent; font-size: 16px; font-weight: 700; letter-spacing: .01em;
            transition: transform .2s var(--ease), box-shadow .25s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
        }
        .btn .icon { width: 18px; height: 18px; }
        .btn-primary { background: var(--grad); color: #03242C; box-shadow: 0 16px 34px -18px rgba(34, 211, 238, .8); }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 22px 44px -18px rgba(74, 222, 128, .55); }
        .btn-ghost { background: rgba(255, 255, 255, .045); color: var(--text); border-color: var(--line); }
        .btn-ghost:hover { background: rgba(255, 255, 255, .08); border-color: rgba(148, 178, 220, .3); transform: translateY(-2px); }
        .btn-outline { background: transparent; border-color: #C9D7E8; color: var(--dark); }
        .btn-outline:hover { background: #fff; border-color: #A8BAD3; transform: translateY(-2px); }
        .btn-block { width: 100%; }

        /* ================= 顶部导航 ================= */
        .site-header { position: sticky; top: 0; z-index: 100; }
        .navbar { background: rgba(5, 8, 16, .78); border-bottom: 1px solid var(--line-soft); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
        .nav-inner { display: flex; align-items: center; height: 74px; gap: 20px; }
        .brand { display: flex; align-items: center; gap: 10px; flex: none; }
        .brand img { height: 30px; width: auto; }
        .brand-tag {
            font-size: 11px; font-weight: 700; letter-spacing: .1em; color: #A5F3FC;
            border: 1px solid rgba(34, 211, 238, .35); background: rgba(34, 211, 238, .08);
            padding: 3px 8px; border-radius: 999px;
        }
        .nav-links { display: flex; align-items: center; gap: 4px; margin-left: 28px; }
        .nav-links a {
            display: inline-flex; align-items: center; height: 40px; padding: 0 14px; border-radius: 9px;
            font-size: 14.5px; font-weight: 500; color: var(--muted);
            transition: color .2s var(--ease), background-color .2s var(--ease);
        }
        .nav-links a:hover { color: var(--text); background: rgba(255, 255, 255, .05); }
        .nav-links a.active { color: var(--text); position: relative; }
        .nav-links a.active::after {
            content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2px;
            border-radius: 2px; background: var(--grad);
        }
        .nav-right { margin-left: auto; display: flex; align-items: center; }
        .btn-nav {
            display: inline-flex; align-items: center; gap: 7px; height: 42px; padding: 0 18px;
            border-radius: 10px; background: var(--grad); color: #03242C;
            font-size: 14px; font-weight: 700;
            transition: transform .2s var(--ease), box-shadow .25s var(--ease);
        }
        .btn-nav .icon { width: 16px; height: 16px; }
        .btn-nav:hover { transform: translateY(-1px); box-shadow: 0 12px 26px -12px rgba(34, 211, 238, .8); }
        .menu-toggle {
            display: none; align-items: center; justify-content: center; flex-direction: column; gap: 5px;
            width: 44px; height: 44px; margin-left: auto;
            border: 1px solid var(--line); border-radius: 10px; background: rgba(255, 255, 255, .03);
        }
        .menu-toggle span { display: block; width: 18px; height: 2px; border-radius: 2px; background: var(--text); transition: transform .25s var(--ease), opacity .2s; }
        .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
        .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
        .nav-mobile-cta { display: none; }

        /* ================= 首屏 ================= */
        .hero {
            position: relative; overflow: hidden; padding: 88px 0 62px;
            background:
                radial-gradient(900px 500px at 82% -8%, rgba(34, 211, 238, .15), transparent 62%),
                radial-gradient(760px 460px at 4% 6%, rgba(74, 222, 128, .1), transparent 60%),
                var(--ink);
        }
        .hero::before {
            content: ""; position: absolute; inset: 0; pointer-events: none;
            background-image:
                linear-gradient(to right, rgba(148, 178, 220, .055) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(148, 178, 220, .055) 1px, transparent 1px);
            background-size: 72px 72px;
            -webkit-mask-image: radial-gradient(ellipse 72% 64% at 64% 24%, #000 18%, transparent 74%);
            mask-image: radial-gradient(ellipse 72% 64% at 64% 24%, #000 18%, transparent 74%);
        }
        .hero-inner { position: relative; display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr); gap: 56px; align-items: center; }
        .eyebrow {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 6px 14px; border-radius: 999px;
            border: 1px solid rgba(34, 211, 238, .28); background: rgba(34, 211, 238, .07);
            color: #A5F3FC; font-size: 12.5px; font-weight: 600; letter-spacing: .04em;
        }
        .pulse-dot {
            width: 6px; height: 6px; border-radius: 50%; background: var(--green);
            animation: pulse 2.4s infinite;
        }
        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(74, 222, 128, .5); }
            70% { box-shadow: 0 0 0 7px rgba(74, 222, 128, 0); }
            100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
        }
        .hero h1 {
            margin: 24px 0 20px;
            font-size: clamp(36px, 4.9vw, 58px);
            line-height: 1.14; letter-spacing: -.02em; font-weight: 800;
        }
        .grad-text {
            background: var(--grad-text); -webkit-background-clip: text; background-clip: text;
            -webkit-text-fill-color: transparent; color: transparent;
        }
        .hero-desc { max-width: 545px; font-size: 16.5px; color: var(--muted); line-height: 1.85; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 34px 0 30px; }
        .hero-trust { display: flex; flex-wrap: wrap; gap: 10px 22px; font-size: 13px; color: #A9BBD4; }
        .hero-trust li { display: flex; align-items: center; gap: 7px; }
        .hero-trust .icon { width: 15px; height: 15px; color: var(--green); }

        /* 加速面板示意 */
        .hero-visual { position: relative; display: flex; justify-content: flex-end; min-width: 0; }
        .console {
            position: relative; z-index: 1; width: 100%; max-width: 468px; padding: 20px;
            border-radius: 22px; border: 1px solid var(--line);
            background: linear-gradient(165deg, #101E34 0%, #080E1A 62%);
            box-shadow: 0 50px 90px -40px rgba(0, 8, 25, .95), inset 0 1px 0 rgba(255, 255, 255, .05);
        }
        .console-head { display: flex; align-items: center; gap: 10px; padding-bottom: 15px; border-bottom: 1px solid var(--line-soft); }
        .win-dots { display: flex; gap: 5px; }
        .win-dots i { width: 8px; height: 8px; border-radius: 50%; background: rgba(255, 255, 255, .16); }
        .console-name { font-size: 12.5px; color: var(--muted); letter-spacing: .03em; }
        .console-state {
            margin-left: auto; display: inline-flex; align-items: center; gap: 6px;
            padding: 4px 9px; border-radius: 999px;
            border: 1px solid rgba(74, 222, 128, .25); background: rgba(74, 222, 128, .1);
            color: #86EFAC; font-size: 11.5px; font-weight: 600;
        }
        .console-state i { width: 5px; height: 5px; border-radius: 50%; background: #4ADE80; box-shadow: 0 0 8px rgba(74, 222, 128, .9); }
        .console-main { display: flex; align-items: center; gap: 22px; padding: 22px 2px; }
        .gauge { position: relative; flex: none; width: 158px; height: 158px; }
        .gauge svg { display: block; width: 100%; height: 100%; filter: drop-shadow(0 0 12px rgba(34, 211, 238, .28)); }
        .gauge-ring { animation: gauge-in 1.3s var(--ease) .15s both; }
        @keyframes gauge-in { from { stroke-dashoffset: 477.5; } to { stroke-dashoffset: 133; } }
        .gauge-center { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; }
        .gauge-value { display: flex; align-items: baseline; gap: 3px; line-height: 1; }
        .gauge-value strong { font-size: 38px; font-weight: 800; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
        .gauge-value span { font-size: 13px; font-weight: 600; color: var(--muted); }
        .gauge-label { font-size: 11px; color: var(--muted-2); letter-spacing: .06em; }
        .console-meta { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 11px; }
        .console-meta li { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 12px; color: var(--muted-2); }
        .console-meta b { font-size: 12.5px; font-weight: 600; color: var(--text); font-variant-numeric: tabular-nums; }
        .console-meta b.ok { color: #6EE7B7; }
        .console-bars { display: flex; flex-direction: column; gap: 12px; padding: 16px 0 4px; border-top: 1px solid var(--line-soft); }
        .bar-row { display: grid; grid-template-columns: 52px 1fr 62px; align-items: center; gap: 12px; font-size: 11.5px; color: var(--muted-2); }
        .bar-track { height: 7px; border-radius: 999px; background: rgba(255, 255, 255, .06); overflow: hidden; }
        .bar-track i { display: block; height: 100%; border-radius: 999px; }
        .bar-before { background: rgba(251, 191, 36, .55); }
        .bar-after { background: var(--grad); }
        .bar-row b { font-size: 11.5px; font-weight: 600; color: var(--muted); text-align: right; font-variant-numeric: tabular-nums; }
        .console-foot { display: flex; align-items: center; gap: 7px; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line-soft); font-size: 11.5px; color: var(--muted-2); }
        .console-foot .icon { width: 14px; height: 14px; color: var(--cyan); }
        .float-card {
            position: absolute; z-index: 2; padding: 9px 13px; border-radius: 12px;
            border: 1px solid var(--line); background: rgba(10, 18, 32, .92);
            backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
            box-shadow: 0 18px 40px -22px rgba(0, 8, 25, .9);
            font-size: 11.5px; color: var(--muted); white-space: nowrap;
        }
        .float-card b { margin-left: 4px; font-size: 13.5px; color: #6EE7B7; }
        .float-card-1 { top: 58px; right: -14px; animation: float 6s ease-in-out infinite; }
        .float-card-2 { bottom: 66px; left: -24px; animation: float 7s ease-in-out infinite reverse; }
        @keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }

        /* 支持平台 */
        .platform-strip {
            position: relative; display: flex; align-items: center; flex-wrap: wrap; gap: 24px;
            margin-top: 64px; padding-top: 26px; border-top: 1px solid var(--line-soft);
        }
        .platform-label { font-size: 12.5px; color: var(--muted-2); letter-spacing: .04em; white-space: nowrap; }
        .platforms { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
        .platforms li {
            display: inline-flex; align-items: center; gap: 7px; padding: 7px 13px;
            border: 1px solid var(--line-soft); border-radius: 999px;
            background: rgba(255, 255, 255, .02); font-size: 12.5px; color: var(--muted);
        }
        .platforms .icon { width: 15px; height: 15px; color: #B9C9DF; }

        /* ================= 数据条 ================= */
        .metrics { padding: 30px 0; background: var(--ink-2); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
        .metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
        .metric { display: flex; flex-direction: column; gap: 3px; padding: 6px 26px; }
        .metric + .metric { border-left: 1px solid var(--line-soft); }
        .metric strong { font-size: clamp(26px, 2.6vw, 34px); font-weight: 800; letter-spacing: -.02em; line-height: 1.15; font-variant-numeric: tabular-nums; }
        .metric em { font-style: normal; margin-left: 1px; font-size: .62em; color: #6EE7B7; }
        .metric > span { font-size: 12.5px; color: var(--muted-2); }
        .metrics-note { margin-top: 14px; font-size: 12px; color: var(--muted-2); }

        /* ================= 通用区块 ================= */
        .section { padding: 104px 0; }
        .section-light { background: var(--light); color: var(--dark); }
        .section-light h2 { color: var(--dark); }
        .section-light :focus-visible { outline-color: #0369A1; }
        .section-light .eyebrow { color: #0E7490; background: rgba(14, 116, 144, .07); border-color: rgba(14, 116, 144, .25); }
        .section-head { max-width: 730px; margin: 0 auto 54px; text-align: center; }
        .section-head h2 { margin: 16px 0 14px; font-size: clamp(28px, 3.5vw, 40px); line-height: 1.26; font-weight: 800; letter-spacing: -.015em; }
        .section-head > p:not(.eyebrow) { font-size: 15.5px; color: var(--muted); line-height: 1.85; }
        .section-light .section-head > p:not(.eyebrow) { color: var(--dark-muted); }

        /* ================= 核心能力 ================= */
        .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        .feature-card {
            padding: 28px; border-radius: var(--radius); border: 1px solid var(--line-soft);
            background: linear-gradient(170deg, rgba(255, 255, 255, .045), rgba(255, 255, 255, .012));
            transition: transform .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
        }
        .feature-card:hover { transform: translateY(-4px); border-color: rgba(34, 211, 238, .32); box-shadow: 0 24px 50px -30px rgba(0, 10, 30, .9); }
        .feature-icon {
            display: flex; align-items: center; justify-content: center;
            width: 44px; height: 44px; border-radius: 12px;
            color: #67E8F9; background: rgba(34, 211, 238, .1); border: 1px solid rgba(34, 211, 238, .22);
        }
        .feature-icon .icon { width: 22px; height: 22px; }
        .feature-card h3 { margin: 18px 0 9px; font-size: 18px; font-weight: 700; letter-spacing: -.005em; }
        .feature-card p { font-size: 14.5px; color: var(--muted); line-height: 1.8; }
        .feature-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
        .tag { padding: 3px 9px; border-radius: 999px; font-size: 11.5px; color: #9FE8F5; background: rgba(34, 211, 238, .08); border: 1px solid rgba(34, 211, 238, .16); }

        /* ================= 实测对比 ================= */
        .result-grid { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: 56px; align-items: center; }
        .result-copy h2 { margin: 16px 0 16px; font-size: clamp(28px, 3.4vw, 38px); line-height: 1.25; font-weight: 800; letter-spacing: -.015em; }
        .grad-text-ink {
            background: linear-gradient(100deg, #0891B2, #059669);
            -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent;
        }
        .result-lead { font-size: 15.5px; color: var(--dark-muted); line-height: 1.85; }
        .check-list { display: flex; flex-direction: column; gap: 12px; margin: 24px 0 22px; }
        .check-list li { display: flex; gap: 10px; font-size: 14.5px; color: #2E3E55; line-height: 1.65; }
        .check-list .icon { width: 18px; height: 18px; margin-top: 3px; color: #0E9F6E; }
        .fineprint { padding-left: 12px; border-left: 2px solid #D8E3F2; font-size: 12px; color: #5C6C84; line-height: 1.7; }
        .compare-card {
            padding: 24px; border-radius: 22px; background: #fff; border: 1px solid #DFE8F5;
            box-shadow: 0 40px 70px -50px rgba(11, 20, 36, .45);
        }
        .compare-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 6px; }
        .compare-title { font-size: 14px; font-weight: 700; color: #334155; }
        .seg { display: inline-flex; gap: 2px; padding: 3px; border-radius: 999px; background: #EDF3FB; }
        .seg-btn { min-height: 40px; padding: 8px 14px; border-radius: 999px; font-size: 12px; font-weight: 600; color: #5B6B84; transition: background-color .2s, color .2s; }
        .seg-btn.is-on { background: var(--dark); color: #fff; }
        .seg-btn:hover:not(.is-on) { color: #22405F; }
        .cmp-list { display: flex; flex-direction: column; gap: 16px; margin-top: 18px; }
        .cmp-metric { display: flex; flex-direction: column; gap: 8px; }
        .cmp-top { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; font-size: 12.5px; color: #5B6B84; }
        .cmp-top b { font-size: 19px; font-weight: 800; letter-spacing: -.01em; color: var(--dark); font-variant-numeric: tabular-nums; }
        .cmp-track { height: 9px; border-radius: 999px; background: #EDF3FB; overflow: hidden; }
        .cmp-track i { display: block; height: 100%; border-radius: 999px; transition: width .55s var(--ease), background .3s; }
        .compare-card[data-state="before"] .cmp-track i { background: linear-gradient(90deg, #FBBF24, #F59E0B); }
        .compare-card[data-state="after"] .cmp-track i { background: linear-gradient(90deg, #22D3EE, #4ADE80); }
        .cmp-chart { margin-top: 20px; padding-top: 16px; border-top: 1px dashed #DCE7F5; }
        .cmp-chart-head { display: flex; justify-content: space-between; margin-bottom: 6px; font-size: 11.5px; color: #64748B; }
        .cmp-chart svg { display: block; width: 100%; height: auto; }
        .chart-grid line { stroke: #E8EFF8; stroke-width: 1; }
        .chart-line { fill: none; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; transition: opacity .35s; }
        .line-before { stroke: #F59E0B; opacity: 0; }
        .line-after { stroke: #10B981; opacity: 1; }
        .compare-card[data-state="before"] .line-before { opacity: 1; }
        .compare-card[data-state="before"] .line-after { opacity: 0; }
        .compare-foot { display: flex; justify-content: space-between; gap: 12px; margin-top: 14px; padding-top: 14px; border-top: 1px solid #EEF3FA; font-size: 11.5px; color: #64748B; }

        /* ================= 使用场景 ================= */
        .scenario-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
        .scenario-card {
            display: flex; gap: 20px; padding: 28px; border-radius: var(--radius);
            border: 1px solid var(--line-soft);
            background: linear-gradient(120deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .01));
            transition: transform .25s var(--ease), border-color .25s var(--ease);
        }
        .scenario-card:hover { transform: translateY(-3px); border-color: rgba(74, 222, 128, .3); }
        .scenario-icon {
            display: flex; align-items: center; justify-content: center; flex: none;
            width: 52px; height: 52px; border-radius: 14px;
            color: #86EFAC; background: rgba(74, 222, 128, .09); border: 1px solid rgba(74, 222, 128, .2);
        }
        .scenario-icon .icon { width: 26px; height: 26px; }
        .scenario-card h3 { margin-bottom: 8px; font-size: 18px; }
        .scenario-card p { font-size: 14.5px; color: var(--muted); line-height: 1.8; }
        .scenario-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 14px; }
        .scenario-tag { padding: 3px 9px; border-radius: 999px; font-size: 11px; color: #B7EBC9; background: rgba(74, 222, 128, .08); border: 1px solid rgba(74, 222, 128, .16); }

        /* ================= 三步开启 ================= */
        .steps { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .steps::before { content: ""; position: absolute; top: 27px; left: 16%; right: 16%; border-top: 2px dashed #D5E1F0; }
        .step { position: relative; z-index: 1; padding: 0 8px; text-align: center; }
        .step-num {
            display: flex; align-items: center; justify-content: center;
            width: 54px; height: 54px; margin: 0 auto 18px; border-radius: 50%;
            background: var(--grad); color: #04222B;
            font-size: 17px; font-weight: 800; letter-spacing: .02em;
            box-shadow: 0 10px 24px -12px rgba(34, 211, 238, .8);
        }
        .step h3 { margin-bottom: 8px; font-size: 18px; color: var(--dark); }
        .step p { font-size: 14px; color: var(--dark-muted); line-height: 1.8; }
        .steps-more { margin-top: 28px; text-align: center; font-size: 13.5px; color: var(--dark-muted); }
        .steps-more a { color: #0E7490; font-weight: 700; text-decoration: underline; text-underline-offset: 4px; }
        .steps-more a:hover { color: #0B5F78; }

        /* ================= 线路网络 ================= */
        .network-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .95fr); gap: 56px; align-items: center; }
        .network-copy h2 { margin: 16px 0; font-size: clamp(28px, 3.4vw, 38px); line-height: 1.25; font-weight: 800; letter-spacing: -.015em; }
        .network-copy p { margin-bottom: 22px; font-size: 15.5px; color: var(--muted); line-height: 1.85; }
        .network-list { display: flex; flex-direction: column; gap: 12px; }
        .network-list li { display: flex; gap: 10px; font-size: 14px; color: #B9C8DC; line-height: 1.7; }
        .network-list .icon { width: 17px; height: 17px; margin-top: 3px; color: var(--cyan); }
        .node-board {
            padding: 22px; border-radius: 22px; border: 1px solid var(--line);
            background: linear-gradient(170deg, #0E1A2C, #080E1A);
            box-shadow: var(--shadow-card);
        }
        .node-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 14px; border-bottom: 1px solid var(--line-soft); }
        .node-head h3 { font-size: 14px; font-weight: 700; }
        .node-live { display: inline-flex; align-items: center; gap: 6px; font-size: 11px; color: #86EFAC; }
        .node-live i { width: 5px; height: 5px; border-radius: 50%; background: #4ADE80; animation: pulse 2.4s infinite; }
        .node-row { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 14px; padding: 12px 2px; border-bottom: 1px dashed var(--line-soft); }
        .node-row:last-of-type { border-bottom: 0; }
        .node-name { display: flex; align-items: center; gap: 9px; font-size: 13.5px; font-weight: 600; }
        .node-type { padding: 2px 7px; border-radius: 999px; border: 1px solid var(--line-soft); font-size: 11.5px; font-weight: 600; color: var(--muted-2); }
        .node-latency { font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; }
        .node-state { width: 46px; text-align: right; font-size: 11.5px; }
        .node-state.good { color: #6EE7B7; }
        .node-state.mid { color: #67E8F9; }
        .node-state.warn { color: #FCD34D; }
        .node-foot { padding-top: 12px; font-size: 12px; color: var(--muted-2); }

        /* ================= 套餐价格 ================= */
        .pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
        .price-card {
            position: relative; display: flex; flex-direction: column; padding: 30px;
            border-radius: 22px; background: #fff; border: 1px solid #DFE8F5;
            box-shadow: 0 20px 40px -34px rgba(11, 20, 36, .4);
            transition: transform .25s var(--ease), box-shadow .25s var(--ease);
        }
        .price-card:hover { transform: translateY(-4px); box-shadow: 0 30px 50px -30px rgba(11, 20, 36, .28); }
        .price-card.popular {
            color: var(--text);
            background: linear-gradient(170deg, #0C1626, #070C16);
            border-color: rgba(34, 211, 238, .35);
            box-shadow: 0 40px 70px -40px rgba(6, 20, 40, .7);
        }
        .popular-tag {
            position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
            padding: 5px 13px; border-radius: 999px; white-space: nowrap;
            background: var(--grad); color: #04222B; font-size: 11px; font-weight: 700;
        }
        .price-name { margin-bottom: 6px; font-size: 15px; font-weight: 700; color: #0F1E33; }
        .price-card.popular .price-name { color: #E8F4FF; }
        .price-desc { margin-bottom: 16px; font-size: 12.5px; color: #5C6C84; }
        .price-card.popular .price-desc { color: var(--muted); }
        .price-amount { display: flex; align-items: baseline; gap: 4px; line-height: 1; }
        .price-amount strong { font-size: 42px; font-weight: 800; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
        .price-amount span { font-size: 13px; color: #5F6E86; }
        .price-card.popular .price-amount span { color: var(--muted-2); }
        .price-features { display: flex; flex-direction: column; gap: 10px; margin: 22px 0 26px; padding-top: 20px; border-top: 1px solid #EDF2FA; }
        .price-card.popular .price-features { border-color: var(--line-soft); }
        .price-features li { display: flex; gap: 9px; font-size: 14px; color: #3E4E66; line-height: 1.6; }
        .price-card.popular .price-features li { color: #B8C8DC; }
        .price-features .icon { width: 16px; height: 16px; margin-top: 3px; color: #0E9F6E; }
        .price-card.popular .price-features .icon { color: #4ADE80; }
        .price-cta { margin-top: auto; }
        .price-note { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 22px; margin-top: 28px; font-size: 12.5px; color: #5B6B84; }
        .price-note li { display: flex; align-items: center; gap: 6px; }
        .price-note .icon { width: 14px; height: 14px; color: #0E9F6E; }

        /* ================= 用户反馈 ================= */
        .reviews { background: var(--light); border-top: 1px solid #E1E9F5; padding-top: 84px; color: var(--dark); }
        .reviews h2 { color: var(--dark); }
        .reviews .eyebrow { color: #0E7490; background: rgba(14, 116, 144, .07); border-color: rgba(14, 116, 144, .25); }
        .reviews .section-head > p:not(.eyebrow) { color: var(--dark-muted); }
        .reviews :focus-visible { outline-color: #0369A1; }
        .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        .review-card {
            display: flex; flex-direction: column; gap: 16px; padding: 26px;
            border-radius: var(--radius); background: #fff; border: 1px solid #E1E9F5;
            box-shadow: 0 16px 34px -30px rgba(11, 20, 36, .4);
        }
        .stars { display: flex; gap: 3px; color: #F59E0B; }
        .stars .icon { width: 15px; height: 15px; }
        .review-card blockquote { font-size: 14.5px; color: #2E3E55; line-height: 1.85; }
        .review-person { display: flex; align-items: center; gap: 11px; margin-top: auto; }
        .avatar {
            display: flex; align-items: center; justify-content: center;
            width: 38px; height: 38px; border-radius: 50%;
            background: linear-gradient(135deg, #A5F3FC, #86EFAC);
            color: #04303A; font-size: 14px; font-weight: 700;
        }
        .review-person b { display: block; font-size: 13px; color: var(--dark); }
        .review-person div span { font-size: 11.5px; color: #64748B; }

        /* ================= 下载 ================= */
        .download-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
        .dl-card {
            display: flex; flex-direction: column; padding: 26px; border-radius: 20px;
            border: 1px solid var(--line-soft);
            background: linear-gradient(170deg, rgba(255, 255, 255, .045), rgba(255, 255, 255, .012));
            transition: transform .25s var(--ease), border-color .25s var(--ease);
        }
        .dl-card:hover { transform: translateY(-4px); border-color: rgba(34, 211, 238, .3); }
        .os-icon {
            display: flex; align-items: center; justify-content: center;
            width: 52px; height: 52px; border-radius: 14px;
            color: #A5F3FC; background: rgba(255, 255, 255, .055); border: 1px solid var(--line-soft);
        }
        .os-icon .icon { width: 25px; height: 25px; }
        .dl-card h3 { margin: 18px 0 4px; font-size: 17px; }
        .dl-version { margin-bottom: 12px; font-size: 11.5px; color: var(--muted-2); }
        .dl-req { margin-bottom: 20px; font-size: 13.5px; color: var(--muted); line-height: 1.75; }
        .dl-btn {
            display: flex; align-items: center; justify-content: center; gap: 7px;
            min-height: 44px; margin-top: auto; border-radius: 10px;
            border: 1px solid var(--line); background: rgba(255, 255, 255, .045);
            font-size: 13.5px; font-weight: 600; color: var(--text);
            transition: background .2s, border-color .2s, color .2s, transform .2s;
        }
        .dl-btn .icon { width: 16px; height: 16px; }
        .dl-btn:hover { transform: translateY(-1px); background: var(--grad); border-color: transparent; color: #03242C; }
        .dl-note { display: flex; align-items: flex-start; gap: 8px; margin-top: 26px; font-size: 12px; color: var(--muted-2); line-height: 1.7; }
        .dl-note .icon { width: 15px; height: 15px; margin-top: 2px; color: var(--cyan); }

        /* ================= 常见问题 ================= */
        .faq { display: flex; flex-direction: column; gap: 12px; max-width: 820px; margin: 0 auto; }
        .faq-item {
            border: 1px solid var(--line-soft); border-radius: 14px;
            background: rgba(255, 255, 255, .025);
            transition: border-color .25s, background-color .25s;
        }
        .faq-item[open] { border-color: rgba(34, 211, 238, .28); background: rgba(34, 211, 238, .035); }
        .faq-item summary { display: flex; align-items: center; gap: 12px; padding: 18px 20px; list-style: none; font-size: 15.5px; font-weight: 600; line-height: 1.6; }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::marker { content: ""; }
        .faq-item summary::after {
            content: ""; flex: none; width: 11px; height: 11px; margin-left: auto;
            border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted);
            transform: rotate(45deg) translateY(-2px); transition: transform .25s var(--ease);
        }
        .faq-item[open] summary::after { transform: rotate(-135deg) translateY(-2px); }
        .faq-item p { padding: 0 20px 20px; font-size: 14.5px; color: var(--muted); line-height: 1.85; }
        .faq-more { margin-top: 26px; text-align: center; font-size: 13.5px; color: var(--muted-2); }
        .faq-more a { color: #67E8F9; text-decoration: underline; text-underline-offset: 4px; }
        .faq-more a:hover { color: #A5F3FC; }
        .faq-section { background: var(--ink-2); }

        /* ================= 文章列表 ================= */
        .article-list { border-top: 1px solid #DCE7F5; }
        .article-item { border-bottom: 1px solid #DCE7F5; }
        .article-link {
            display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 24px;
            padding: 26px 18px; border-radius: 14px;
            transition: background-color .25s var(--ease), box-shadow .25s var(--ease), transform .25s var(--ease);
        }
        .article-link:hover { background: #fff; box-shadow: 0 18px 36px -28px rgba(11, 20, 36, .5); transform: translateY(-2px); }
        .article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; margin-bottom: 10px; font-size: 12.5px; color: #64748B; }
        .article-cat { padding: 2px 9px; border-radius: 999px; font-size: 11.5px; font-weight: 600; color: #0E7490; background: rgba(14, 116, 144, .08); border: 1px solid rgba(14, 116, 144, .2); }
        .article-link h3 { margin-bottom: 8px; font-size: 19px; color: var(--dark); transition: color .2s; }
        .article-link:hover h3 { color: #0E7490; }
        .article-link p { max-width: 760px; font-size: 14.5px; color: var(--dark-muted); line-height: 1.8; }
        .article-arrow {
            display: flex; align-items: center; justify-content: center; flex: none;
            width: 46px; height: 46px; border-radius: 50%;
            border: 1px solid #D5E1F0; background: #fff; color: #0E7490;
            transition: background .25s, color .25s, border-color .25s;
        }
        .article-arrow .icon { width: 18px; height: 18px; }
        .article-link:hover .article-arrow { background: var(--grad); border-color: transparent; color: #03242C; }
        .articles-more { margin-top: 26px; text-align: center; font-size: 13.5px; color: var(--dark-muted); }
        .articles-more a { color: #0E7490; font-weight: 700; text-decoration: underline; text-underline-offset: 4px; }
        .articles-more a:hover { color: #0B5F78; }

        /* ================= 页脚 ================= */
        .site-footer { padding: 56px 0 30px; background: #04070E; border-top: 1px solid var(--line-soft); color: var(--text); }
        .footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
        .footer-brand img { height: 28px; width: auto; margin-bottom: 14px; }
        .footer-brand p { max-width: 300px; font-size: 13px; color: var(--muted-2); line-height: 1.8; }
        .footer-col h3 { margin-bottom: 14px; font-size: 12.5px; font-weight: 700; letter-spacing: .06em; color: #C9D7E8; }
        .footer-col ul { display: flex; flex-direction: column; gap: 9px; }
        .footer-col a { font-size: 13px; color: var(--muted-2); transition: color .2s; }
        .footer-col a:hover { color: #67E8F9; }
        .footer-bottom {
            display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px 24px;
            margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line-soft);
            font-size: 12px; color: #6B7C95;
        }

        /* ================= 动效与响应式 ================= */
        .has-js .reveal {
            opacity: 0; translate: 0 18px;
            transition: opacity .65s var(--ease), translate .65s var(--ease),
                transform .25s var(--ease), border-color .25s var(--ease),
                box-shadow .25s var(--ease), background-color .25s var(--ease);
        }
        .has-js .reveal.is-in { opacity: 1; translate: 0 0; }

        @media (max-width: 1180px) {
            .float-card { display: none; }
        }
        @media (max-width: 1100px) {
            .hero-inner { gap: 40px; }
            .feature-grid { grid-template-columns: repeat(2, 1fr); }
            .download-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-top { grid-template-columns: 1.2fr 1fr 1fr; }
            .result-grid, .network-grid { gap: 36px; }
        }
        @media (max-width: 992px) {
            .menu-toggle { display: flex; }
            .nav-right { display: none; }
            .brand-tag { display: none; }
            .nav-links {
                position: absolute; top: 100%; left: 0; right: 0; z-index: 99;
                display: flex; flex-direction: column; align-items: stretch; gap: 2px;
                margin: 0; padding: 12px 20px 18px;
                background: #080D19; border-bottom: 1px solid var(--line);
                box-shadow: 0 30px 50px -30px rgba(0, 0, 0, .9);
                transform: translateY(-8px); opacity: 0; visibility: hidden; pointer-events: none;
                transition: transform .25s var(--ease), opacity .2s, visibility .25s;
                max-height: calc(100dvh - 74px); overflow-y: auto;
            }
            .nav-links.is-open { transform: none; opacity: 1; visibility: visible; pointer-events: auto; }
            .nav-links a { height: auto; padding: 12px 14px; border-radius: 10px; font-size: 15px; color: var(--text); }
            .nav-links a.active { background: rgba(255, 255, 255, .05); }
            .nav-links a.active::after { display: none; }
            .nav-mobile-cta { display: block; margin-top: 10px; }
            .nav-links .nav-mobile-cta a {
                width: 100%; padding: 0 26px; min-height: 50px; font-size: 15px; font-weight: 700;
                color: #03242C; background: var(--grad); justify-content: center;
            }
            .hero { padding: 64px 0 48px; }
            .hero-inner { grid-template-columns: 1fr; gap: 44px; }
            .hero-visual { justify-content: center; }
            .console { max-width: 520px; }
            .result-grid, .network-grid { grid-template-columns: 1fr; }
            .pricing-grid { max-width: 520px; margin: 0 auto; grid-template-columns: 1fr; }
            .review-grid { max-width: 560px; margin: 0 auto; grid-template-columns: 1fr; }
            .scenario-grid { grid-template-columns: 1fr; }
            .steps { grid-template-columns: 1fr; gap: 30px; }
            .steps::before { display: none; }
            .metrics-grid { grid-template-columns: repeat(2, 1fr); }
            .metric { padding: 8px 22px; }
            .metric + .metric { border-left: 0; }
            .metric:nth-child(even) { border-left: 1px solid var(--line-soft); }
            .metric:nth-child(n+3) { border-top: 1px solid var(--line-soft); }
            .footer-top { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 700px) {
            .container { padding: 0 20px; }
            .section { padding: 76px 0; }
            .hero { padding: 48px 0 40px; }
            .hero h1 { font-size: 34px; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .hero-actions .btn { width: 100%; }
            .seg-btn { min-height: 44px; padding: 9px 14px; }
            .platform-strip { flex-direction: column; align-items: flex-start; gap: 14px; margin-top: 48px; }
            .feature-grid, .download-grid { grid-template-columns: 1fr; }
            .console-main { flex-direction: column; align-items: stretch; gap: 16px; }
            .gauge { margin: 0 auto; }
            .console-meta { gap: 8px; }
            .bar-row { grid-template-columns: 46px 1fr 56px; }
            .compare-head { flex-direction: column; align-items: flex-start; gap: 10px; }
            .compare-foot { flex-direction: column; gap: 4px; }
            .article-link { grid-template-columns: 1fr; gap: 14px; padding: 22px 14px; }
            .article-arrow { display: none; }
            .footer-top { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; }
            .metrics-grid { grid-template-columns: 1fr 1fr; }
            .metric strong { font-size: 27px; }
        }
        @media (prefers-reduced-motion: reduce) {
            html { scroll-behavior: auto; }
            *, *::before, *::after {
                animation-duration: .001ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: .001ms !important;
            }
            .has-js .reveal { opacity: 1; translate: none; }
        }
        @media print {
            .site-header, .site-footer, .hero-visual { display: none; }
            body { background: #fff; color: #000; }
            .has-js .reveal { opacity: 1; translate: none; }
            .hero, .section, .metrics, .faq-section { background: #fff !important; }
            .feature-card, .scenario-card, .dl-card, .faq-item, .node-board, .compare-card, .price-card, .review-card {
                background: #fff !important; border-color: #CBD5E1 !important; box-shadow: none !important;
            }
            .hero h1, .hero-desc, .section-head h2, .section-head > p:not(.eyebrow), .feature-card p, .scenario-card p,
            .dl-req, .faq-item p, .network-copy p, .node-name, .node-latency, .node-foot, .cmp-chart-head, .compare-foot,
            .result-lead, .check-list li, .step p, .price-features li, .price-desc, .review-card blockquote {
                color: #1E293B !important;
            }
            .metrics .metric > span, .metrics-note, .price-note, .review-person div span, .dl-version { color: #475569 !important; }
        }
    

            @media (max-width: 992px) {
                .menu-toggle { display: none; }
                .site-header { position: static; }
                .nav-inner { flex-wrap: wrap; height: auto; padding-block: 12px; }
                .nav-links {
                    position: static; display: flex; flex-direction: column; width: 100%;
                    margin: 6px 0 0; padding: 0; border: 0; box-shadow: none; background: transparent;
                    opacity: 1; visibility: visible; transform: none; pointer-events: auto;
                    max-height: none; overflow: visible;
                }
                .nav-links a { height: auto; padding: 10px 14px; }
                .nav-mobile-cta { display: block; margin: 6px 0 0; }
                .nav-right { display: none; }
            }