:root{
      --cyan:#009BF7; --cyan-d:#0f93c6; --amber:#f97316; --amber-d:#e07e00;
      --ink:#14263a; --muted:#5b6b7b; --line:#e7edf3;
      --bg:#fff; --bg-soft:#f4f9fc; --bg-dark:#0e1b29;
      --radius:18px; --shadow:0 24px 60px rgba(20,40,60,.12); --maxw:1140px;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{font-family:"PingFang SC","Microsoft YaHei UI","Segoe UI",system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
    .btn{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:10px 28px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:.18s;white-space:nowrap}
    .btn-primary{background:var(--cyan);color:#fff;}
    .btn-primary:hover{background:var(--cyan-d);transform:translateY(-1px)}
    .btn-amber{background:var(--amber);color:#fff;box-shadow:0 12px 26px rgba(247,166,0,.34)}
    .btn-amber:hover{background:var(--amber-d);transform:translateY(-1px)}
    .btn-ghost{background:#fff;color:var(--ink);border:1.5px solid var(--line)}
    .btn-ghost:hover{border-color:var(--cyan);color:var(--cyan-d)}
    .eyebrow{display:inline-block;color:var(--cyan);background:rgba(22,171,227,.10);font-weight:700;font-size:14px;padding:6px 14px;border-radius:999px;margin-bottom:16px}
    .sec{padding:96px 0}
    .sec-head{text-align:center;max-width:700px;margin:0 auto 56px}
    .sec-head h2{font-size:36px;letter-spacing:-.6px}
    .sec-head p{color:var(--muted);margin-top:14px;font-size:17px}

    /* 占位图块（替换为真实 <img> 即可） */
    .media-frame{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
    .media-bar{display:flex;gap:7px;padding:11px 14px;background:#f3f6f9;border-bottom:1px solid var(--line)}
    .media-bar i{width:11px;height:11px;border-radius:50%;background:#d6dde4}
    .media-bar i:nth-child(1){background:#ff5f57}.media-bar i:nth-child(2){background:#febc2e}.media-bar i:nth-child(3){background:#28c840}

    /* ---------- 顶栏 ---------- */
    header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.85);backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid transparent;transition:.2s}
    header.scrolled{border-color:var(--line);box-shadow:0 4px 20px rgba(20,40,60,.05)}
    .nav{display:flex;align-items:center;justify-content:space-between;height:70px}
    .logo img{height:40px}
    .nav-links{display:flex;gap:34px}
    .nav-links a{color:var(--ink);font-weight:600;font-size:16px}
    .nav-links a:hover{color:var(--amber)}

    /* ---------- Hero ---------- */
    .hero{position:relative;overflow:hidden;text-align:center;background:
      radial-gradient(1200px 520px at 50% -12%,rgba(22,171,227,.2),transparent 60%),
      radial-gradient(700px 360px at 12% 6%,rgba(247,166,0,.2),transparent 60%),var(--bg-soft)}
    .hero-inner{padding:84px 0 0}
    .hero h1{font-size:60px;line-height:1.1;letter-spacing:-1.6px;max-width:880px;margin:0 auto}
    .hero h1 .hl{color:var(--cyan)} .hero h1 .hl2{color:var(--amber)}
    .hero .lead{font-size:20px;color:var(--muted);max-width:620px;margin:24px auto 32px}
    .hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
    .hero-meta{margin-top:18px;color:var(--muted);font-size:14px}
    .hero-shot{max-width:980px;margin:64px auto -120px;position:relative}
    .hero-shot .ph{height:650px}

    /* 截图遮罩 + 工具条 mock（Hero 大图，可替换为真实截图） 
    .shot-overlay{position:absolute;left:8%;top:16%;width:54%;height:56%;border:2px solid #16abe3;border-radius:6px;box-shadow:0 0 0 9999px rgba(0,0,0,.40)}
    .shot-overlay::before{content:"480 × 300";position:absolute;top:-28px;left:0;background:#0f1b27;color:#fff;font-size:12px;padding:3px 9px;border-radius:4px}
    .shot-tools{position:absolute;left:8%;bottom:14%;display:flex;gap:6px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px 10px;box-shadow:var(--shadow)}
    .shot-tools b{width:32px;height:32px;border-radius:8px;display:grid;place-items:center;font-size:15px;background:#eef3f7}
    .shot-tools b.on{background:var(--cyan);color:#fff} */

    /* ---------- 信任条 ---------- */
    .strip{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .strip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:40px 0;text-align:center}
    .strip .n{font-size:30px;font-weight:800;color:var(--cyan)}
    .strip .l{color:var(--muted);font-size:14px;margin-top:4px}

    /* ---------- 一屏一功能 ---------- */
    .show{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:60px 0}
    .show.reverse .show-text{order:2}
    .show-text h3{font-size:30px;letter-spacing:-.5px}
    .highlight-orange { color: #f97316; }
    .show-text p{color:var(--muted);margin-top:14px;font-size:17px}
    .show-list{margin-top:20px;display:flex;flex-direction:column;gap:11px}
    .show-list li{list-style:none;display:flex;gap:10px;align-items:flex-start;color:#33485c;font-size:15.5px}
    .show-list li svg{width:21px;height:21px;flex:0 0 21px;margin-top:3px;stroke:var(--cyan);fill:none;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
    .show.amber .show-list li svg{stroke:var(--amber)}

    /* 滚动入场动效 */
    .reveal{opacity:0;transform:translateY(28px);transition:.7s cubic-bezier(.2,.7,.2,1)}
    .reveal.in{opacity:1;transform:none}

    /* ---------- 更多功能小卡 ---------- */
    .grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
    .card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;transition:.2s}
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
    .card .ico{width:44px;height:44px;border-radius:11px;display:grid;place-items:center;margin-bottom:14px;background:rgba(22,171,227,.12)}
    .card .ico svg{width:23px;height:23px;stroke:var(--cyan-d);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
    .card:nth-child(2n) .ico{background:rgba(247,166,0,.14)} .card:nth-child(2n) .ico svg{stroke:var(--amber-d)}
    .card h4{font-size:16.5px;margin-bottom:6px}
    .card p{color:var(--muted);font-size:14px}

    /* ---------- 下载区 ---------- */
    .download{background:var(--bg-dark);color:#fff}
    .dl-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
    .dl-grid h2{font-size:38px;letter-spacing:-.6px}
    .dl-grid p{color:#9fb3c4;margin-top:14px;font-size:17px}
    .dl-card{background:#13243a;border:1px solid #21384f;border-radius:var(--radius);padding:34px}
    .dl-card .ver{display:flex;align-items:baseline;gap:10px;margin-bottom:18px}
    .dl-card .ver b{font-size:24px} .dl-card .ver span{color:#8fa6ba;font-size:14px}
    .dl-meta{display:flex;flex-direction:column;gap:9px;margin:20px 0 24px;color:#b9c9d6;font-size:14px}
    .dl-meta div{display:flex;gap:9px} .dl-meta svg{width:18px;height:18px;stroke:var(--cyan);fill:none;stroke-width:2;flex:0 0 18px}
    .dl-card .btn-primary{width:100%;justify-content:center}
    .dl-card .hist{display:block;text-align:center;margin-top:14px;color:#8fa6ba;font-size:13px}
    .dl-card .hist:hover{color:#fff}

    /* ---------- 价格 ---------- */
    .price-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:840px;margin:0 auto}
    .plan{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:36px 32px;position:relative}
    .plan.pro{border:2px solid var(--cyan);box-shadow:var(--shadow)}
    .plan .tag{position:absolute;top:-18px;right:28px;background:var(--amber);color:#fff;font-size:18px;font-weight:700;padding:4px 13px;border-radius:999px}
    .plan h3{font-size:21px}
    .plan .price{font-size:42px;font-weight:800;margin:12px 0 2px}
    .plan .price small{font-size:15px;font-weight:600;color:var(--muted)}
    .plan ul{margin:20px 0 28px;display:flex;flex-direction:column;gap:12px}
    .plan li{list-style:none;display:flex;gap:9px;color:#3a4f61;font-size:14.5px}
    .plan li svg{width:19px;height:19px;flex:0 0 19px;margin-top:3px;stroke:var(--cyan);fill:none;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}
    .plan.pro li svg{stroke:var(--amber)}
    .plan .btn{width:100%;justify-content:center}

    /* ---------- FAQ ---------- */
    .faq{max-width:800px;margin:0 auto}
    details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:2px 22px;margin-bottom:14px}
    summary{cursor:pointer;font-weight:600;padding:18px 0;list-style:none;display:flex;justify-content:space-between;align-items:center}
    summary::-webkit-details-marker{display:none}
    summary::after{content:"+";color:var(--cyan);font-size:22px}
    details[open] summary::after{content:"–"}
    details p{color:var(--muted);padding:0 0 18px;font-size:15px}

    /* ---------- 页脚 ---------- */
    footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:64px 0 40px}
    .foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
    .foot-grid h5{font-size:14px;color:var(--ink);margin-bottom:16px}
    .foot-grid a,.foot-grid p{display:block;color:var(--muted);font-size:14px;margin-bottom:10px}
    .foot-grid a:hover{color:var(--cyan-d)}
    .foot-bottom{margin-top:48px;padding-top:24px;border-top:1px solid var(--line);text-align:center;color:var(--muted);font-size:13px}

    /* ---------- 响应式 ---------- */
    @media(max-width:920px){
      .nav-links{display:none}
      .show,.dl-grid{grid-template-columns:1fr;gap:40px}
      .show.reverse .show-text{order:0}
      .grid{grid-template-columns:1fr 1fr}
      .strip-grid{grid-template-columns:1fr 1fr;gap:28px}
      .price-grid{grid-template-columns:1fr}
      .foot-grid{grid-template-columns:1fr 1fr}
      .hero h1{font-size:42px}
      .hero-shot{margin-bottom:-60px}
      .sec{padding:64px 0}
    }
    @media(max-width:540px){.grid,.foot-grid{grid-template-columns:1fr}.hero h1{font-size:34px}.ph{height:240px}}


        /* ===== 轮播容器 ===== */
        #carousel-wrapper {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 60px;
            min-height: 1.4em;
            position: relative;
        }

        #carousel-word {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            font-weight: 700;
            color: #fbbf24;
            /* 默认金色，每个字会单独覆盖 */
            letter-spacing: 0.02em;
            position: relative;
            white-space: nowrap;
        }

        /* 每个字符的样式 */
        .char {
            display: inline-block;
            opacity: 0;
            transform: scale(0.6) translateY(8px);
            animation: charPop 0.45s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
            will-change: transform, opacity;
            position: relative;
        }

        /* 字符弹出动画 —— "快闪" 核心 */
        @keyframes charPop {
            0% {
                opacity: 0;
                transform: scale(0.6) translateY(10px);
                filter: blur(2px);
            }
            40% {
                opacity: 1;
                transform: scale(1.12) translateY(-2px);
                filter: blur(0);
            }
            70% {
                transform: scale(0.96) translateY(1px);
            }
            100% {
                opacity: 1;
                transform: scale(1) translateY(0);
                filter: blur(0);
            }
        }

        /* 不同词的颜色变体 —— 保留原文 hl / hl2 风格 */
        .char.hl-color {
            color: #f97316;
            /* 橙色 — 对应原文 hl */
        }
        .char.hl2-color {
            color: #009BF7;
            /* 蓝色 — 对应原文 hl2 */
        }
        .char.default-color {
            color: #fbbf24;
            /* 金色 — 默认 */
        }

 
        /* ===== 响应式微调 ===== */
        @media (max-width: 600px) {
            .container {
                padding: 32px 16px 40px;
                border-radius: 28px;
            }
            h1 {
                font-size: clamp(26px, 7vw, 38px);
                gap: 2px 4px;
            }
            .eyebrow {
                font-size: 12px;
                padding: 4px 14px;
            }
            #carousel-wrapper {
                min-width: 40px;
            }
        }

        @media (max-width: 420px) {
            h1 {
                font-size: 22px;
                flex-wrap: wrap;
            }
            #carousel-word {
                white-space: normal;
            }
        }

        /* ===== 可选：轮播切换时的微光晕 ===== */
        #carousel-word.pop-glow {
            animation: glowPulse 0.6s ease-out;
        }

        @keyframes glowPulse {
            0% {
                text-shadow: 0 0 0 rgba(251, 191, 36, 0);
            }
            30% {
                text-shadow: 0 0 30px rgba(251, 191, 36, 0.3), 0 0 60px rgba(251, 191, 36, 0.1);
            }
            100% {
                text-shadow: 0 0 0 rgba(251, 191, 36, 0);
            }
        }