/* ═══ Feature 页面样式：全部作用域限定在 .ft-wrap 内，不污染全站 ═══ */
    .ft-wrap {
        --ft-c: #0078d4;
        --ft-rgb: 0, 120, 212;
        --ft-lt: #4a9eff;
        --ft-lt-rgb: 74, 158, 255;
        --ft-ink: #0d1626;
        --ft-body: #48566b;
        --ft-mute: #8794a8;
        --ft-line: #e7ebf2;
        --ft-soft: #f6f8fc;
        font: 16px/1.8 -apple-system, BlinkMacSystemFont, "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Segoe UI", Roboto, sans-serif;
        color: var(--ft-body);
        background: #fff;
        overflow-x: hidden;
    }
    .ft-wrap, .ft-wrap * { box-sizing: border-box; }
    .ft-wrap h1, .ft-wrap h2, .ft-wrap h3, .ft-wrap h4,
    .ft-wrap p, .ft-wrap ul, .ft-wrap li, .ft-wrap figure { margin: 0; padding: 0; }
    .ft-wrap ul, .ft-wrap li { list-style: none; }
    .ft-wrap a, .ft-wrap a:link, .ft-wrap a:visited { color: inherit; text-decoration: none; }
    .ft-wrap img { max-width: 100%; display: block; border: 0; }

    .ft-inner { max-width: 1120px; margin: 0 auto; padding: 0 28px; }
    .ft-narrow { max-width: 880px; }

    /* ───────── 首屏 ───────── */
    .ft-hero { position: relative; padding: 26px 0 56px; overflow: hidden;
        background:
            radial-gradient(120% 88% at 50% -18%, rgba(var(--ft-lt-rgb), .30) 0%, rgba(var(--ft-lt-rgb), .10) 38%, rgba(var(--ft-lt-rgb), 0) 66%),
            linear-gradient(180deg, #1e2f49 0%, #182742 34%, #131f36 66%, #101a2d 100%); }
    .ft-wrap { overflow-x: hidden; }
    .ft-glow-1 { position: absolute; left: 50%; top: -430px; width: 1260px; height: 940px; margin-left: -630px;
        border-radius: 50%; pointer-events: none;
        background: radial-gradient(circle, rgba(var(--ft-lt-rgb), .40) 0%, rgba(var(--ft-lt-rgb), .12) 46%, rgba(var(--ft-lt-rgb), 0) 72%); }
    .ft-glow-2 { position: absolute; left: -240px; bottom: -300px; width: 640px; height: 640px; border-radius: 50%;
        pointer-events: none; background: radial-gradient(circle, rgba(var(--ft-lt-rgb), .30) 0%, rgba(var(--ft-lt-rgb), 0) 68%); }
    /* 底部一层同色渐隐，把演示区与首屏文字衔接起来 */
    .ft-hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 260px;
        pointer-events: none; background: linear-gradient(to bottom, rgba(16,26,45,0) 0%, rgba(16,26,45,.55) 100%); }
    .ft-grid-bg { position: absolute; inset: 0; pointer-events: none; opacity: .55;
        background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
                          linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
        background-size: 56px 56px;
        -webkit-mask-image: radial-gradient(circle at 50% 24%, #000 0%, transparent 74%);
        mask-image: radial-gradient(circle at 50% 24%, #000 0%, transparent 74%); }
    .ft-hero-in { position: relative; z-index: 2; text-align: center; color: #fff; }
    .ft-back { display: inline-flex; align-items: center; gap: 6px; padding: 7px 18px; border-radius: 999px;
        font-size: 13px; color: rgba(255,255,255,.92); background: rgba(255,255,255,.12);
        border: 1px solid rgba(255,255,255,.16); margin-bottom: 20px;
        transition: background .22s, color .22s, transform .22s; }
    .ft-back:hover { background: rgba(255,255,255,.16); color: #fff; transform: translateX(-2px); }
    .ft-h1 { font-size: clamp(30px, 4.2vw, 50px); line-height: 1.16; font-weight: 900;
        letter-spacing: -.022em; color: #fff; margin-bottom: 8px;
        text-shadow: 0 2px 30px rgba(0,0,0,.28); }
    .ft-h1 em { font-style: normal; display: block; font-size: .46em; font-weight: 700;
        color: rgba(255,255,255,.80); letter-spacing: .04em; margin-top: 9px; }

    .ft-shot { position: relative; z-index: 3; max-width: 1060px; margin: 44px auto 0; padding: 0 28px; }
    .ft-shot figure { border-radius: 16px; overflow: hidden; background: #fff;
        border: 1px solid rgba(var(--ft-rgb), .22);
        box-shadow: 0 40px 80px -30px rgba(0,0,0,.62), 0 0 0 1px rgba(255,255,255,.06); }
    .ft-shot img { width: 100%; height: auto; }

    /* 演示区下方的功能示意图：由深色首屏过渡到浅色正文 */
    .ft-shot-light { max-width: 1060px; margin: 22px auto 0; padding: 0 28px; }
    .ft-shot-light figure { border-radius: 16px; overflow: hidden; background: #fff;
        border: 1px solid var(--ft-line);
        box-shadow: 0 22px 48px -26px rgba(13,22,38,.26); }
    .ft-shot-light img { width: 100%; height: auto; }

    /* ───────── 指标 ───────── */
    .ft-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin: 46px 0 0; }
    .ft-stat { text-align: center; padding: 22px 12px; border-radius: 14px; background: var(--ft-soft);
        border: 1px solid var(--ft-line); transition: transform .26s, box-shadow .26s, border-color .26s; }
    .ft-stat:hover { transform: translateY(-3px); border-color: rgba(var(--ft-rgb), .45);
        box-shadow: 0 16px 34px -16px rgba(13,22,38,.22); }
    .ft-stat b { display: block; font-size: clamp(20px, 2.2vw, 27px); font-weight: 900; color: var(--ft-c);
        letter-spacing: -.02em; line-height: 1.2; }
    .ft-stat span { display: block; font-size: 12.5px; color: var(--ft-mute); margin-top: 5px; letter-spacing: .03em; }

    /* ───────── 通用区块 ───────── */
    .ft-sec { padding: 64px 0; }
    .ft-sec + .ft-sec { border-top: 1px solid var(--ft-line); }
    .ft-eyebrow { display: inline-flex; align-items: center; gap: 9px; font-size: 11.5px; font-weight: 800;
        letter-spacing: .14em; color: var(--ft-c); margin-bottom: 12px; }
    .ft-eyebrow::before { content: ""; width: 18px; height: 2px; background: var(--ft-c); border-radius: 2px; }
    .ft-h2 { font-size: clamp(23px, 2.6vw, 30px); font-weight: 900; color: var(--ft-ink); line-height: 1.32;
        letter-spacing: -.016em; margin-bottom: 14px; }
    .ft-lead { font-size: 15.5px; line-height: 2.02; color: var(--ft-body); max-width: 920px; }

    .ft-def { margin-top: 26px; padding: 30px 36px; border-radius: 16px; position: relative;
        background: linear-gradient(135deg, rgba(var(--ft-rgb), .075), #fff 62%);
        border: 1px solid rgba(var(--ft-rgb), .2); }
    .ft-def::before { content: ""; position: absolute; left: 0; top: 24px; bottom: 24px; width: 3px;
        border-radius: 0 3px 3px 0; background: var(--ft-c); }
    .ft-def h3 { font-size: 12.5px; font-weight: 800; letter-spacing: .1em; color: var(--ft-c); margin-bottom: 11px; }
    .ft-def p { font-size: 15.5px; line-height: 2.05; color: #35435a; text-align: justify; }

    .ft-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 28px; }
    .ft-card { display: flex; gap: 16px; padding: 24px; border-radius: 14px; background: #fff;
        border: 1px solid var(--ft-line); transition: transform .26s, box-shadow .26s, border-color .26s; }
    .ft-card:hover { transform: translateY(-3px); border-color: rgba(var(--ft-rgb), .45);
        box-shadow: 0 18px 40px -18px rgba(13,22,38,.22); }
    .ft-card-ico { width: 46px; height: 46px; flex: 0 0 46px; border-radius: 12px; display: flex; align-items: center;
        justify-content: center; background: rgba(var(--ft-rgb), .1); color: var(--ft-c); }
    .ft-card-ico svg { width: 22px; height: 22px; }
    .ft-card-tx { padding-top: 3px; }
    .ft-card-tx strong { display: block; font-size: 15.5px; font-weight: 800; color: var(--ft-ink);
        line-height: 1.62; }

    .ft-scenes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 28px; }
    .ft-scene { padding: 26px 24px; border-radius: 14px; background: #fff; border: 1px solid var(--ft-line);
        position: relative; overflow: hidden; transition: transform .26s, box-shadow .26s, border-color .26s; }
    .ft-scene::after { content: ""; position: absolute; right: -46px; bottom: -56px; width: 132px; height: 132px;
        border-radius: 50%; background: rgba(var(--ft-rgb), .07); transition: transform .32s; }
    .ft-scene:hover { transform: translateY(-4px); border-color: rgba(var(--ft-rgb), .4);
        box-shadow: 0 18px 40px -18px rgba(13,22,38,.2); }
    .ft-scene:hover::after { transform: scale(1.4); }
    .ft-scene-n { position: relative; z-index: 1; display: inline-flex; align-items: center; justify-content: center;
        width: 30px; height: 30px; border-radius: 9px; font-size: 12.5px; font-weight: 900; color: #fff;
        background: var(--ft-c); margin-bottom: 14px; }
    .ft-scene h4 { position: relative; z-index: 1; font-size: 15.5px; font-weight: 800; color: var(--ft-ink);
        margin-bottom: 8px; }
    .ft-scene p { position: relative; z-index: 1; font-size: 13.5px; line-height: 1.88; color: var(--ft-mute); }

    /* ───────── 演示 ───────── */
    /* ═══ 首屏演示区：放在 hero 内，用户第一眼即可看到真实效果 ═══ */
    .ft-demo-hero { position: relative; z-index: 4; padding: 0; margin-top: 24px; }
    .ft-demo-hero .ft-live { display: inline-flex; align-items: center; gap: 6px; flex: 0 0 auto;
        padding: 3px 10px 3px 8px; border-radius: 999px; font-size: 10px; font-weight: 800;
        letter-spacing: .12em; color: var(--ft-c); background: rgba(var(--ft-rgb), .13);
        border: 1px solid rgba(var(--ft-rgb), .3); }
    .ft-demo-hero .ft-live i { width: 5px; height: 5px; border-radius: 50%; background: var(--ft-c);
        box-shadow: 0 0 0 0 rgba(var(--ft-rgb), .85); animation: ft-pulse 2s infinite; }
    @keyframes ft-pulse {
        0%   { box-shadow: 0 0 0 0 rgba(var(--ft-rgb), .8); }
        70%  { box-shadow: 0 0 0 8px rgba(var(--ft-rgb), 0); }
        100% { box-shadow: 0 0 0 0 rgba(var(--ft-rgb), 0); }
    }

    /* 演示框：玻璃质感 + 主色描边光晕，坐落在 hero 深色背景上 */
    .ft-demo-hero .ft-demo-frame { position: relative; border-radius: 16px; overflow: hidden;
        background: #fff; border: 1px solid rgba(var(--ft-rgb), .34);
        box-shadow: 0 0 0 1px rgba(255, 255, 255, .07),
                    0 44px 90px -34px rgba(0, 0, 0, .82),
                    0 0 70px -18px rgba(var(--ft-rgb), .6); }
    .ft-demo-hero .ft-demo-bar { display: flex; align-items: center; gap: 7px; padding: 11px 15px;
        background: linear-gradient(180deg, #fbfcfe, #f2f5fa);
        border-bottom: 1px solid #e5eaf2; }
    .ft-demo-hero .ft-dot { width: 10px; height: 10px; border-radius: 50%; flex: 0 0 auto; }
    .ft-demo-hero .ft-demo-title { font-size: 12.5px; font-weight: 700; color: #5b6779;
        margin-left: 9px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
        max-width: 300px; }
    .ft-demo-spacer { flex: 1; }
    .ft-demo-hero .ft-btn-s { padding: 5px 13px; border-radius: 7px; font-size: 12px; font-weight: 600;
        color: #55617a; background: #fff; border: 1px solid #dde3ec; cursor: pointer;
        font-family: inherit; line-height: 1.7; white-space: nowrap;
        transition: color .2s, border-color .2s, background .2s; }
    .ft-demo-hero .ft-btn-s:hover { color: var(--ft-c); border-color: var(--ft-c); }
    .ft-wrap .ft-demo-hero .ft-btn-solid,
    .ft-wrap .ft-demo-hero .ft-btn-solid:link,
    .ft-wrap .ft-demo-hero .ft-btn-solid:visited { color: #fff; background: var(--ft-c);
        border-color: var(--ft-c); box-shadow: 0 2px 8px -2px rgba(var(--ft-rgb), .6); }
    .ft-demo-hero .ft-btn-solid:hover { color: #fff; filter: brightness(1.1); }

    .ft-demo-body { position: relative; background: #fff; }
    .ft-demo-hero .ft-demo-frame iframe { display: block; width: 100%; height: 1080px;
        border: 0; background: #fff; position: relative; z-index: 2; }
    /* 加载态：iframe 覆盖其上的淡出提示 */
    .ft-demo-fallback { position: absolute; inset: 0; z-index: 1; display: flex;
        flex-direction: column; align-items: center; justify-content: center; gap: 14px;
        font-size: 13px; color: #8b97a9; background: #fff; }
    .ft-demo-load { width: 26px; height: 26px; border-radius: 50%;
        border: 2.5px solid rgba(var(--ft-rgb), .18); border-top-color: var(--ft-c);
        animation: ft-spin .8s linear infinite; }
    @keyframes ft-spin { to { transform: rotate(360deg); } }

    /* API 演示：深色代码面板，与首屏同为暗色语境 */
    .ft-demo-hero .ft-code-box { position: relative; margin-top: 0; border-radius: 16px;
        border: 1px solid rgba(var(--ft-rgb), .34); background: #0f1626; padding: 20px 24px;
        box-shadow: 0 0 0 1px rgba(255, 255, 255, .06),
                    0 34px 74px -30px rgba(0, 0, 0, .8),
                    0 0 60px -20px rgba(var(--ft-rgb), .5); }
    .ft-demo-hero .ft-code-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
        margin-bottom: 14px; }
    .ft-demo-hero .ft-code-head .ft-live { color: #fff; background: rgba(var(--ft-lt-rgb), .2);
        border-color: rgba(var(--ft-lt-rgb), .5); padding: 4px 11px 4px 9px; font-size: 10.5px; }
    .ft-demo-hero .ft-code-head .ft-live i { background: var(--ft-lt); }
    .ft-demo-hero .ft-code-head .ft-code-label { display: inline; margin: 0; }
    .ft-demo-hero .ft-code-label { display: block; font-size: 11px; font-weight: 800;
        color: rgba(var(--ft-rgb), .95); letter-spacing: .12em; margin-bottom: 13px;
        text-transform: uppercase; }
    .ft-demo-hero .ft-code-box code { display: block; font: 12.8px/1.9 "SF Mono", "Monaco", "Menlo", "Consolas", monospace;
        color: #cfe0f5; word-break: break-all; background: rgba(255, 255, 255, .05);
        border: 1px solid rgba(255, 255, 255, .09); border-radius: 9px; padding: 14px 16px; }
    .ft-demo-hero .ft-code-acts { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
    .ft-demo-hero .ft-code-copy,
    .ft-demo-hero .ft-code-open { display: inline-flex; align-items: center; padding: 8px 18px;
        border-radius: 8px; font-size: 12.5px; font-weight: 700; cursor: pointer;
        font-family: inherit; line-height: 1.6; text-decoration: none;
        transition: transform .2s, filter .2s, background .2s; }
    .ft-demo-hero .ft-code-copy { color: #fff; background: var(--ft-c); border: 1px solid var(--ft-c); }
    .ft-demo-hero .ft-code-copy:hover { filter: brightness(1.1); transform: translateY(-1px); }
    .ft-wrap .ft-demo-hero .ft-code-open,
    .ft-wrap .ft-demo-hero .ft-code-open:link,
    .ft-wrap .ft-demo-hero .ft-code-open:visited { color: #ffffff;
        background: rgba(255, 255, 255, .14); border: 1px solid rgba(255, 255, 255, .34); }
    .ft-wrap .ft-demo-hero .ft-code-open:hover { color: #fff; background: rgba(255, 255, 255, .24);
        border-color: rgba(255, 255, 255, .55); }

    @media (max-width: 768px) {
        .ft-demo-hero { margin-top: 18px; }
        .ft-demo-hero .ft-demo-frame,
        .ft-demo-hero .ft-code-box { border-radius: 12px; }
        .ft-demo-hero .ft-demo-bar { padding: 9px 12px; gap: 6px; flex-wrap: wrap; }
        .ft-demo-hero .ft-demo-title { font-size: 11.5px; max-width: 120px; }
        .ft-demo-hero .ft-btn-s { padding: 4px 10px; font-size: 11px; }
        .ft-demo-hero .ft-demo-frame iframe { height: 620px; }
        .ft-demo-hero .ft-code-box { padding: 18px 16px; }
        .ft-demo-hero .ft-code-box code { font-size: 11.5px; padding: 12px; }
        .ft-demo-hero .ft-code-copy,
        .ft-demo-hero .ft-code-open { padding: 7px 14px; font-size: 12px; flex: 1 1 auto; justify-content: center; }
    }
    @media (max-width: 480px) {
        .ft-demo-hero .ft-demo-frame iframe { height: 520px; }
        .ft-demo-spacer { display: none; }
        .ft-demo-hero .ft-demo-bar { justify-content: flex-start; }
        .ft-demo-hero .ft-demo-title { flex: 1; max-width: none; }
    }

    /* 兼容旧选择器（若页面别处仍使用非 hero 演示） */
    .ft-demo:not(.ft-demo-hero) { padding: 0 0 64px; }
    .ft-demo-frame { border-radius: 14px; overflow: hidden; border: 1px solid var(--ft-line);
        box-shadow: 0 24px 56px -26px rgba(13,22,38,.3); background: #fff; }
    .ft-demo-frame iframe { display: block; width: 100%; height: 980px; border: 0; background: #fff; }

    /* ───────── 常见问题 ───────── */
    .ft-faq { margin-top: 28px; border-top: 1px solid var(--ft-line); }
    .ft-faq details { border-bottom: 1px solid var(--ft-line); }
    .ft-faq summary { display: flex; align-items: flex-start; gap: 12px; padding: 20px 2px; cursor: pointer;
        font-size: 15.5px; font-weight: 700; color: var(--ft-ink); list-style: none; line-height: 1.68; }
    .ft-faq summary::-webkit-details-marker { display: none; }
    .ft-faq summary::after { content: "+"; margin-left: auto; flex: 0 0 auto; font-size: 20px; font-weight: 400;
        color: var(--ft-c); line-height: 1; transition: transform .22s; }
    .ft-faq details[open] summary::after { transform: rotate(45deg); }
    .ft-faq summary:hover { color: var(--ft-c); }
    .ft-faq .ft-a { padding: 0 2px 22px 34px; font-size: 14.5px; line-height: 2.05; color: var(--ft-body); }
    .ft-q { flex: 0 0 auto; width: 22px; height: 22px; border-radius: 6px;
        background: rgba(var(--ft-rgb), .12); color: var(--ft-c); font-size: 12px; font-weight: 900;
        display: flex; align-items: center; justify-content: center; margin-top: 3px; }

    /* ───────── 底部深度介绍 ───────── */
    /* ───────── 底部深度解读（INSIGHT）───────── */
    .ft-deep { position: relative; overflow: hidden; padding: 84px 0 88px;
        background: linear-gradient(180deg, #ffffff 0%, #f6f9fd 42%, #eef4fb 100%);
        border-top: 1px solid var(--ft-line); }
    .ft-deep::before { content: ""; position: absolute; left: 50%; top: -280px; width: 1180px; height: 660px;
        transform: translateX(-50%); pointer-events: none;
        background: radial-gradient(ellipse at center, rgba(var(--ft-rgb), .16), transparent 66%); }
    .ft-deep::after { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
        background-image: linear-gradient(rgba(var(--ft-rgb), .05) 1px, transparent 1px),
                          linear-gradient(90deg, rgba(var(--ft-rgb), .05) 1px, transparent 1px);
        background-size: 46px 46px;
        -webkit-mask-image: radial-gradient(ellipse 78% 62% at 50% 24%, #000 30%, transparent 78%);
                mask-image: radial-gradient(ellipse 78% 62% at 50% 24%, #000 30%, transparent 78%); }

    .ft-deep-in { position: relative; z-index: 2; max-width: 1080px; margin: 0 auto; padding: 0 28px; }

    .ft-deep-head { max-width: 660px; margin: 0 auto 52px; text-align: center; }
    .ft-deep h2 { font-size: clamp(24px, 2.8vw, 33px); font-weight: 900; color: var(--ft-ink);
        letter-spacing: -.02em; margin-bottom: 12px; line-height: 1.3; }
    .ft-deep h2 em { font-style: normal; color: var(--ft-c); }
    .ft-deep-sub { font-size: 14px; color: var(--ft-mute); line-height: 1.8; letter-spacing: .01em; }
    .ft-deep-rule { width: 52px; height: 3px; border-radius: 2px; margin: 22px auto 0;
        background: linear-gradient(90deg, var(--ft-c), rgba(var(--ft-rgb), .18)); }

    /* 章节卡片：左侧编号 + 图标，右侧标题与正文 */
    .ft-ch { position: relative; display: grid; grid-template-columns: 92px 1fr; gap: 26px;
        padding: 30px 34px 32px; margin-bottom: 16px; border-radius: 18px;
        background: rgba(255, 255, 255, .82); border: 1px solid #e3ecf6;
        box-shadow: 0 1px 2px rgba(13, 22, 38, .03), 0 14px 34px -22px rgba(13, 22, 38, .22);
        -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
        transition: transform .3s cubic-bezier(.22,.68,.36,1), box-shadow .3s, border-color .3s; }
    .ft-ch:hover { transform: translateY(-3px); border-color: rgba(var(--ft-rgb), .42);
        box-shadow: 0 1px 2px rgba(13, 22, 38, .04), 0 26px 50px -24px rgba(var(--ft-rgb), .5); }
    /* 左侧竖线装饰 */
    .ft-ch::before { content: ""; position: absolute; left: 0; top: 22px; bottom: 22px; width: 3px;
        border-radius: 0 3px 3px 0; background: linear-gradient(180deg, var(--ft-c), rgba(var(--ft-rgb), .12));
        opacity: 0; transition: opacity .3s; }
    .ft-ch:hover::before { opacity: 1; }

    .ft-ch-aside { display: flex; flex-direction: column; align-items: center; gap: 10px; }
    .ft-ch-ico { width: 72px; height: 72px; border-radius: 20px; display: flex;
        align-items: center; justify-content: center; flex: none;
        background: linear-gradient(150deg, #ffffff, #f1f6fd);
        border: 1px solid rgba(var(--ft-rgb), .2);
        box-shadow: inset 0 1px 0 #fff, 0 8px 18px -12px rgba(var(--ft-rgb), .8); }
    /* 线稿改用遮罩着色：不论功能类型，图形会自动染成当前文件类型的色调 */
    .ft-ch-mask { display: block; width: 44px; height: 44px; background: var(--ft-c);
        -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
        -webkit-mask-position: center; mask-position: center;
        -webkit-mask-size: contain; mask-size: contain;
        transition: background .3s; }
    .ft-ch:hover .ft-ch-mask { background: var(--ft-lt); }
    .ft-ch-no { font-size: 10.5px; font-weight: 800; letter-spacing: .16em; color: rgba(var(--ft-rgb), .74);
        font-feature-settings: "tnum"; }
    .ft-ch-tag { font-size: 10px; font-weight: 800; letter-spacing: .14em; color: var(--ft-c);
        text-transform: uppercase; opacity: .82; margin-bottom: 7px; }
    .ft-ch h3 { font-size: 18.5px; font-weight: 850; color: var(--ft-ink); line-height: 1.42;
        letter-spacing: -.01em; margin-bottom: 11px; }
    .ft-ch-p { font-size: 15px; line-height: 2.06; color: #43536b; text-align: justify;
        margin: 0; }
    .ft-ch-p::first-letter { font-size: 1.06em; }

    /* 收尾强调条 */
    .ft-deep-end { display: flex; align-items: center; gap: 14px; margin-top: 30px; padding: 20px 26px;
        border-radius: 14px; background: linear-gradient(100deg, rgba(var(--ft-rgb), .1), rgba(var(--ft-rgb), .03));
        border: 1px solid rgba(var(--ft-rgb), .2); }
    .ft-deep-end i { width: 30px; height: 30px; flex: none; border-radius: 50%; display: flex;
        align-items: center; justify-content: center; font-style: normal; font-size: 14px; font-weight: 800;
        color: #fff; background: var(--ft-c); }
    .ft-deep-end p { font-size: 14px; line-height: 1.7; color: #3d4d65; margin: 0; }
    .ft-deep-end strong { color: var(--ft-ink); font-weight: 800; }

    @media (max-width: 900px) {
        .ft-deep { padding: 60px 0 62px; }
        .ft-deep-head { margin-bottom: 36px; }
        .ft-ch { grid-template-columns: 66px 1fr; gap: 18px; padding: 24px 22px 26px; border-radius: 15px; }
        .ft-ch-ico { width: 56px; height: 56px; border-radius: 16px; }
        .ft-ch-ico img { width: 36px; height: 36px; }
        .ft-ch h3 { font-size: 17px; }
        .ft-ch-p { font-size: 14.5px; line-height: 1.98; }
        .ft-deep-end { padding: 16px 18px; gap: 11px; }
        .ft-deep-end p { font-size: 13.5px; }
    }
    @media (max-width: 640px) {
        .ft-deep { padding: 48px 0 50px; }
        .ft-deep-in { padding: 0 18px; }
        .ft-deep h2 { font-size: 22px; }
        .ft-deep-sub { font-size: 13px; }
        .ft-ch { grid-template-columns: 1fr; gap: 14px; padding: 22px 18px 24px; }
        .ft-ch-aside { flex-direction: row; align-items: center; gap: 12px; }
        .ft-ch-ico { width: 46px; height: 46px; border-radius: 13px; }
        .ft-ch-ico img { width: 30px; height: 30px; }
        .ft-ch-body { margin-top: 0; }
        .ft-ch h3 { font-size: 16.5px; }
        .ft-ch-p { font-size: 14.2px; line-height: 1.95; text-align: left; }
        .ft-deep-end { flex-direction: column; align-items: flex-start; }
    }
    /* ───────── 相关能力 ───────── */
    .ft-rel { padding: 64px 0; border-top: 1px solid var(--ft-line); }
    .ft-rel-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 28px; }
    .ft-rel-a { display: block; padding: 24px; border-radius: 14px; border: 1px solid var(--ft-line); background: #fff;
        transition: transform .26s, box-shadow .26s, border-color .26s; }
    .ft-rel-a:hover { transform: translateY(-3px); border-color: rgba(var(--ft-rgb), .48);
        box-shadow: 0 18px 40px -18px rgba(13,22,38,.2); }
    .ft-rel-a strong { display: flex; align-items: center; font-size: 15.5px; font-weight: 800; color: var(--ft-ink);
        margin-bottom: 6px; }
    .ft-rel-a strong::after { content: "\2192"; margin-left: 6px; color: var(--ft-c); transition: transform .22s; }
    .ft-rel-a:hover strong::after { transform: translateX(4px); }
    .ft-rel-a span { font-size: 13.5px; color: var(--ft-mute); line-height: 1.85; display: block; }

    /* ───────── CTA ───────── */
    .ft-cta { position: relative; overflow: hidden; padding: 76px 0; text-align: center; background: #0a1020; }
    .ft-cta-glow { position: absolute; left: 50%; top: -300px; width: 1000px; height: 820px; margin-left: -500px;
        border-radius: 50%; pointer-events: none;
        background: radial-gradient(circle, rgba(var(--ft-rgb), .58) 0%, rgba(var(--ft-rgb), .12) 45%, rgba(var(--ft-rgb), 0) 70%); }
    .ft-cta-in { position: relative; z-index: 2; }
    .ft-cta h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 900; letter-spacing: -.022em;
        color: #fff; margin-bottom: 14px; }
    .ft-cta p { font-size: 15px; color: rgba(255,255,255,.72); max-width: 580px; margin: 0 auto 32px; line-height: 1.92; }
    .ft-cta-btns { display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap; }
    .ft-cta-btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 38px; border-radius: 999px;
        font-size: 15.5px; font-weight: 800; background: #fff; color: var(--ft-c);
        box-shadow: 0 14px 34px -10px rgba(0,0,0,.5); transition: transform .22s, box-shadow .22s; }
    .ft-cta-btn:hover { transform: translateY(-2px); box-shadow: 0 20px 44px -12px rgba(0,0,0,.56); }
    .ft-cta-ghost { display: inline-flex; align-items: center; gap: 8px; padding: 14px 30px; border-radius: 999px;
        font-size: 15px; font-weight: 700; color: #fff; background: rgba(255,255,255,.1);
        border: 1px solid rgba(255,255,255,.24); transition: background .22s; }
    .ft-cta-ghost:hover { background: rgba(255,255,255,.2); color: #fff; }

    /* ───────── 空状态 ───────── */
    .ft-empty { padding: 130px 0 110px; text-align: center; }
    .ft-empty h1 { font-size: 26px; font-weight: 800; color: var(--ft-ink); margin-bottom: 12px; }
    .ft-empty p { font-size: 15px; color: var(--ft-mute); margin-bottom: 28px; }

    /* ───────── 响应式 ───────── */
    @media screen and (max-width: 1024px) {
        .ft-scenes { grid-template-columns: repeat(2, 1fr); }
        .ft-stats { grid-template-columns: repeat(2, 1fr); }
    }
    @media screen and (max-width: 768px) {
        .ft-inner, .ft-deep-in { padding: 0 18px; }
        .ft-shot { padding: 0 14px; margin-top: 30px; }
        .ft-shot figure { border-radius: 12px; }
        .ft-hero { padding: 28px 0 44px; }
        .ft-sec { padding: 44px 0; }
        .ft-deep { padding: 50px 0; }
        .ft-grid, .ft-scenes, .ft-rel-grid { grid-template-columns: 1fr; }
        .ft-stats { gap: 12px; margin-top: 34px; }
        .ft-stat { padding: 16px 10px; }
        .ft-def { margin-top: 22px; padding: 24px 22px; }
        .ft-def p, .ft-deep-p { font-size: 15px; text-align: left; }
        .ft-lead { font-size: 15px; }
        .ft-demo-frame iframe { height: 640px; }
        .ft-card { padding: 20px 18px; }
        .ft-faq .ft-a { padding-left: 2px; }
        .ft-cta { padding: 56px 0; }
        .ft-cta-btn, .ft-cta-ghost { padding: 13px 28px; font-size: 15px; }
        .ft-code-box { padding: 16px 20px 58px; }
        .ft-code-copy { top: auto; bottom: 14px; right: 16px; }
    }

    html, body { overflow-x: hidden; }
    .ft-wrap, .ft-hero, .ft-shot, .ft-deep, .ft-cta { max-width: 100%; }