:root {
            /* 统一且克制的强调色：华为红 */
            --primary: #cf0a2c; 
            --primary-dim: rgba(207, 10, 44, 0.12);
            --primary-glow: rgba(207, 10, 44, 0.25);
            
            /* 背景色：深邃暗色，提高文字对比度 */
            --bg: #09090b; 
            --bg2: #121214;
            
            /* 卡片与面板 */
            --card: rgba(255, 255, 255, 0.03);
            --card-hover: rgba(255, 255, 255, 0.06);
            --glass: rgba(255, 255, 255, 0.05);
            --line: rgba(255, 255, 255, 0.1);
            --line-hover: rgba(255, 255, 255, 0.15);
            
            /* 文字颜色：确保清晰可读 */
            --text-main: #ffffff;
            --text-sec: #a1a1aa; 
            --text-muted: #71717a; 
        }
        *{margin:0;padding:0;box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{
            font-family:'Outfit',-apple-system,'HarmonyOS Sans SC','PingFang SC',sans-serif;
            background:var(--bg);color:var(--text-sec);
            overflow-x:hidden;-webkit-font-smoothing:antialiased;line-height:1.6;
        }
        ::selection{background:var(--primary);color:#fff}
        img{max-width:100%;display:block}

        /* ========== SUBTLE BACKGROUND BLOBS ========== */
        /* 降低亮度和饱和度，不再影响阅读 */
        .ambient-bg {
            position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden;
        }
        .ambient-bg i {
            position: absolute; border-radius: 50%; filter: blur(120px);
            opacity: 0.15; /* 极低透明度 */
            background: var(--primary);
            animation: drift 25s ease-in-out infinite alternate;
        }
        .ambient-bg i:nth-child(1) { width: 40vw; height: 40vw; top: -10%; left: -10%; }
        .ambient-bg i:nth-child(2) { width: 35vw; height: 35vw; bottom: -10%; right: -5%; animation-delay: -10s; }
        
        @keyframes drift {
            0% { transform: translate(0, 0) scale(1); }
            100% { transform: translate(5vw, 5vh) scale(1.1); }
        }

        /* ========== NAV ========== */
        .topbar{
            position:fixed;top:0;width:100%;z-index:900;
            padding:0 clamp(16px,4vw,40px);height:72px;
            display:flex;align-items:center;justify-content:center;
            transition:.4s;
            /* iOS Style Immersive Glass */
            background:rgba(9, 9, 11, 0.45);
            backdrop-filter:saturate(180%) blur(30px);
            -webkit-backdrop-filter:saturate(180%) blur(30px);
            border-bottom:1px solid transparent;
        }
        .topbar.pinned{
            background:rgba(9, 9, 11, 0.7);
            border-bottom:1px solid rgba(255, 255, 255, 0.08);
            box-shadow:0 4px 30px rgba(0,0,0,0.4);
        }
        .topbar-in{width:100%;max-width:1180px;display:flex;align-items:center;justify-content:space-between;gap:12px}
        .brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--text-main);font-weight:700;font-size:1.35rem;letter-spacing:0.02em;flex-shrink:0}
        .brand img{width:36px;height:36px;border-radius:10px}
        .topbar-actions{display:flex;align-items:center;gap:8px;min-width:0;flex:1;justify-content:flex-end}
        .topnav{display:flex;align-items:center;gap:8px;min-width:0}
        .topnav a{
            color:var(--text-sec);text-decoration:none;padding:8px 18px;border-radius:12px;
            font-size:1.05rem;font-weight:500;transition:.3s;white-space:nowrap;
        }
        .topnav a:hover{color:var(--text-main);background:var(--card)}
        .topnav a.active{color:var(--text-main);background:var(--card);border:1px solid var(--line)}
        .topbar-dl{
            color:#fff;text-decoration:none;padding:8px 18px;border-radius:12px;
            font-size:1.05rem;font-weight:600;transition:.3s;white-space:nowrap;flex-shrink:0;
            background:var(--primary);
            box-shadow:0 4px 20px var(--primary-glow);
        }
        .topbar-dl:hover{transform:translateY(-2px);box-shadow:0 8px 24px var(--primary-glow)}
        @media(max-width:900px){
            .topnav a{padding:8px 12px;font-size:.95rem}
            .topbar-dl{padding:8px 14px;font-size:.95rem}
        }
        @media(max-width:720px){
            .topbar{height:auto;padding:10px 16px}
            .topbar-in{align-items:flex-start;gap:10px;flex-direction:column}
            .brand{font-size:1.15rem}
            .brand img{width:32px;height:32px}
            .topbar-actions{width:100%;justify-content:flex-start}
            .topbar-dl{display:none}
            .topnav{width:100%;overflow-x:auto;padding-bottom:2px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
            .topnav::-webkit-scrollbar{display:none}
            .topnav a{flex:0 0 auto;padding:7px 11px;font-size:.9rem;border-radius:10px}
        }

        /* ========== HERO ========== */
        .hero{
            position:relative;z-index:1;
            min-height:100vh;
            display:grid;grid-template-columns:1fr 1fr;align-items:center;
            gap:40px;
            max-width:1200px;margin:0 auto;
            padding:140px 32px 80px;
        }
        .hero-left{z-index:2}
        .hero-tag{
            display:inline-flex;align-items:center;gap:8px;
            padding:8px 20px;border-radius:999px;
            background:var(--primary-dim);border:1px solid rgba(59, 130, 246, 0.2);
            font-size:.85rem;font-weight:600;color:var(--primary);
            margin-bottom:28px;
        }
        .hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px var(--primary)}
        .hero h1{
            font-size:clamp(2.6rem,5.5vw,4.2rem);
            font-weight:800;line-height:1.1;letter-spacing:-.03em;
            color:var(--text-main);margin-bottom:24px;
        }
        .hero h1 .accent{
            color: var(--primary);
        }
        .hero-sub{
            font-size:clamp(.95rem,1.6vw,1.12rem);
            color:var(--text-sec);line-height:1.7;max-width:480px;margin-bottom:40px;
        }
        .hero-btns{display:flex;gap:14px;flex-wrap:wrap}
        .btn{
            display:inline-flex;align-items:center;gap:9px;
            padding:15px 32px;border-radius:14px;
            font-size:1rem;font-weight:600;text-decoration:none;border:none;cursor:pointer;
            transition:all .3s ease;font-family:inherit;
        }
        .btn svg{width:18px;height:18px;flex-shrink:0}
        .btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 24px var(--primary-glow)}
        .btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 32px var(--primary-glow)}
        .btn-dim{background:var(--glass);color:var(--text-main);border:1px solid var(--line)}
        .btn-dim:hover{border-color:var(--primary);background:var(--primary-dim);transform:translateY(-3px)}

        /* phone cluster */
        .hero-right{
            position:relative;display:flex;justify-content:center;align-items:center;
            z-index:2;min-height:500px;align-self:center;height:auto;
        }
        .hero-phone{
            position:absolute;width:250px;height:auto;border-radius:32px;
            border:4px solid rgba(255,255,255,.05);overflow:hidden;
            box-shadow:0 20px 40px rgba(0,0,0,.6);
            transition: transform .6s cubic-bezier(.16,1,.3,1), 
                        box-shadow .6s cubic-bezier(.16,1,.3,1), 
                        border-color .6s cubic-bezier(.16,1,.3,1),
                        z-index 0s linear .6s;
            background:#000;line-height:0;
        }
        .hero-phone img{
            display:block;width:100%;height:auto;max-width:100%;
            max-height:min(52vh,500px);margin:0 auto;
            aspect-ratio:800 / 1805;object-fit:contain;object-position:top center;
            opacity:0.65;transition:opacity .6s ease;
        }
        .hp-1{left:0;top:50%;transform:translateY(-50%) rotate(-6deg) scale(.88);z-index:1;}
        .hp-2{left:50%;top:50%;transform:translate(-50%,-50%);z-index:3;
            box-shadow:0 30px 60px rgba(0,0,0,.8);border-color:rgba(255,255,255,.1);
            img { opacity: 1; }}
        .hp-3{right:0;top:50%;transform:translateY(-50%) rotate(6deg) scale(.88);z-index:1;}
        
        .hero-phone:hover{
            transform:translateY(-50%) rotate(0deg) scale(1.05)!important;
            z-index:10!important;
            box-shadow:0 40px 80px rgba(0,0,0,.8)!important; border-color:rgba(255,255,255,.2);
            transition: transform .6s cubic-bezier(.16,1,.3,1), 
                        box-shadow .6s cubic-bezier(.16,1,.3,1), 
                        border-color .6s cubic-bezier(.16,1,.3,1),
                        z-index 0s linear 0s;
            img { opacity: 1; }
        }
        .hp-2:hover{transform:translate(-50%,-50%) scale(1.05)!important;}
        
        /* When hovering the cluster, un-hovered phones drop z-index instantly to avoid covering the newly hovered phone */
        .hero-right:hover .hero-phone:not(:hover){
            transition: transform .6s cubic-bezier(.16,1,.3,1), 
                        box-shadow .6s cubic-bezier(.16,1,.3,1), 
                        border-color .6s cubic-bezier(.16,1,.3,1),
                        z-index 0s linear 0s;
        }

        @media(max-width:900px){
            .hero{grid-template-columns:1fr;text-align:center;padding-bottom:40px}
            .hero-sub{margin:0 auto 40px}
            .hero-btns{justify-content:center}
            .hero-right{position:relative;min-height:380px;margin-top:20px;height:auto}
            .hero-phone{width:180px;height:auto}
            .hero-phone img{width:100%;height:auto;object-fit:contain}
            .hp-1{left:50%; margin-left:-150px; top:50%; transform:translateY(-50%) rotate(-10deg) scale(.85);}
            .hp-2{left:50%; margin-left:-90px; top:50%; transform:translateY(-50%);}
            .hp-3{left:50%; margin-left:-30px; top:50%; transform:translateY(-50%) rotate(10deg) scale(.85);}
            .hero-phone:hover{ transform:translateY(-50%) rotate(0deg) scale(1.05)!important; }
            .hp-2:hover{ transform:translateY(-50%) scale(1.05)!important; }
        }

        /* ========== WAVE DIVIDER ========== */
        .wave-div{position:relative;z-index:2;height:80px;overflow:hidden;margin-top:-1px}
        .wave-div svg{position:absolute;bottom:0;width:100%;height:80px}
        .wave-div svg path{fill:var(--bg2)}

        /* ========== SOURCE RIBBON ========== */
        .ribbon{
            padding:60px 0;position:relative;z-index:2;
            background:var(--bg2);overflow:hidden;
        }
        .ribbon-label{
            text-align:center;font-size:1.15rem;font-weight:600;letter-spacing:.2em;
            color:var(--text-sec);margin-bottom:40px;
            text-transform:uppercase;
        }
        .ribbon-slider{
            width: 100%;
            overflow: hidden;
            -webkit-mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
            mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
        }
        .ribbon-track{
            display:flex;gap:16px;width:max-content;
            animation:slide 40s linear infinite;
        }
        .ribbon-track:hover{animation-play-state:paused}
        @keyframes slide{0%{transform:translateX(0)}100%{transform:translateX(-25%)}}
        .chip{
            display:flex;align-items:center;gap:8px;
            padding:10px 20px;border-radius:999px;
            background:var(--card);border:1px solid var(--line);
            font-size:.95rem;font-weight:500;color:var(--text-sec);
            white-space:nowrap;flex-shrink:0;transition:.3s;
        }
        .chip:hover{background:var(--card-hover);border-color:var(--line-hover);color:var(--text-main);transform:scale(1.04)}
        .chip img{width:18px;height:18px;border-radius:4px}

        /* ========== GALLERY ========== */
        .showcase{
            padding:100px 0;position:relative;z-index:2;
            background:var(--bg2);
        }
        .showcase-head{text-align:center;margin-bottom:48px;padding:0 24px}
        .stag{
            display:inline-flex;align-items:center;gap:8px;
            font-size:.85rem;font-weight:600;letter-spacing:.1em;color:var(--primary);
            margin-bottom:12px;
        }
        .stag::before,.stag::after{content:'';width:16px;height:1px;background:var(--primary);border-radius:1px}
        .showcase-head h2{
            font-size:clamp(1.8rem,3.5vw,2.4rem);font-weight:700;color:var(--text-main);
            letter-spacing:-.02em;line-height:1.3;
        }
        .showcase-head h2 .dim{color:var(--text-muted)}

        .scroll-wrap{max-width: 1200px; margin: 0 auto; padding: 0 32px;}
        .scroll-row{display:grid; grid-template-columns: repeat(3, 1fr); gap: 32px;}

        .sc-card{
            width: 100%;
            background:var(--card);border:1px solid var(--line);
            border-radius:24px;overflow:hidden;
            transition:all .4s ease;
            position:relative;
        }
        .sc-card:hover{
            transform:translateY(-6px);
            border-color:var(--line-hover);
            box-shadow:0 20px 40px rgba(0,0,0,.4);
        }
        .sc-img{width:100%;overflow:hidden;background:#000; border-bottom: 1px solid var(--line);}
        .sc-img img{width:100%;height:auto;display:block;transition:transform .6s; opacity: 0.9;}
        .sc-card:hover .sc-img img{transform:scale(1.05); opacity: 1;}
        .sc-body{padding:24px}
        .sc-body h3{font-size:1.15rem;font-weight:600;color:var(--text-main);margin-bottom:8px}
        .sc-body p{font-size:.95rem;color:var(--text-sec);line-height:1.6}

        @media(max-width: 900px){
            .scroll-row{grid-template-columns: repeat(2, 1fr); gap: 24px;}
        }
        @media(max-width: 600px){
            .scroll-row{grid-template-columns: 1fr;}
        }

        /* ========== SPLIT FEATURES ========== */
        .split{
            position:relative;z-index:2;
            padding:120px 32px;
            max-width:1100px;margin:0 auto;
            display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;
        }
        .split.flip{direction:rtl}
        .split.flip>*{direction:ltr}
        .split-txt .stag{margin-bottom:12px}
        .split-txt h2{
            font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;color:var(--text-main);
            letter-spacing:-.02em;line-height:1.2;margin-bottom:16px;
        }
        .split-txt h2 .dim{color:var(--text-muted)}
        .split-txt>p{font-size:1rem;color:var(--text-sec);line-height:1.7;margin-bottom:24px}
        .split-txt>p strong{color:var(--text-main);font-weight:600}

        .pills{display:flex;flex-wrap:wrap;gap:8px}
        .pill{
            padding:8px 18px;border-radius:999px;
            background:var(--card);border:1px solid var(--line);
            font-size:.9rem;font-weight:500;color:var(--text-sec);
            transition:.3s;
        }
        .pill:hover{background:var(--primary-dim);border-color:var(--primary);color:var(--text-main)}

        .split-vis{display:flex;justify-content:center;position:relative}
        .split-phone{
            width:340px;border-radius:40px;
            border:5px solid rgba(255,255,255,.05);overflow:hidden;
            box-shadow:0 30px 80px rgba(0,0,0,.6);
            transition:all .5s ease;position:relative;z-index:2;
            background: #000;
        }
        .split-phone img{width:100%;display:block;opacity:0.9;}
        .split-phone:hover{transform:translateY(-10px);box-shadow:0 40px 100px rgba(0,0,0,.7); img {opacity:1;}}
        .split-vis .bg-shape{
            position:absolute;width:340px;height:340px;border-radius:50%;
            background:var(--primary-dim);filter:blur(80px);z-index:0;
        }

        @media(max-width:900px){
            .split{grid-template-columns:1fr;gap:40px;text-align:center;padding:80px 24px;}
            .split.flip{direction:ltr}
            .split-vis{order:-1}
            .split-phone{width:280px;border-radius:32px;}
            .pills{justify-content:center}
        }

        /* ========== NUMBERS ========== */
        .numbers{
            position:relative;z-index:2;
            padding:80px 24px;
            background:var(--bg2);
            border-top:1px solid var(--line);border-bottom:1px solid var(--line);
        }
        .numbers-in{
            max-width:900px;margin:0 auto;
            display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;
        }
        .num-card{
            padding:24px 12px;
        }
        .num-val{font-size:clamp(2rem,4vw,2.8rem);font-weight:800;color:var(--text-main);line-height:1}
        .num-val .accent{color:var(--primary)}
        .num-lbl{font-size:.95rem;color:var(--text-sec);margin-top:8px;font-weight:500}

        @media(max-width:600px){.numbers-in{grid-template-columns:1fr 1fr}}

        /* ========== HARMONY GRID ========== */
        .hmsec{
            position:relative;z-index:2;padding:120px 24px;
        }
        .hmsec-head{text-align:center;margin-bottom:60px}
        .hmsec-head h2{
            font-size:clamp(1.8rem,3.5vw,2.4rem);font-weight:700;color:var(--text-main);
            letter-spacing:-.02em;margin-bottom:12px;
        }
        .hmsec-head>p{color:var(--text-sec);font-size:1rem;max-width:460px;margin:0 auto}

        .hgrid{
            max-width:1100px;margin:0 auto;
            display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
        }
        .hcard{
            position: relative; overflow: hidden;
            padding:32px 28px;border-radius:16px;
            background:rgba(255,255,255,0.02);
            border:1px solid rgba(255,255,255,0.05);
            transition:all .5s cubic-bezier(.16,1,.3,1);
        }
        .hcard::before {
            content: "";
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: radial-gradient(800px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255,255,255,0.04), transparent 40%);
            opacity: 0;
            transition: opacity 0.5s ease;
            pointer-events: none;
            z-index: 0;
        }
        .hcard:hover::before { opacity: 1; }
        .hcard h3, .hcard p { position: relative; z-index: 1; pointer-events: none; }
        .hcard:hover{
            background:rgba(255,255,255,0.04);
            border-color:rgba(255,255,255,0.15);
            box-shadow:0 10px 40px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.08);
        }
        .hcard h3{font-size:1.15rem;font-weight:600;color:var(--text-main);margin-bottom:12px;}
        .hcard p{font-size:.95rem;color:var(--text-sec);line-height:1.6;}

        @media(max-width:900px){.hgrid{grid-template-columns:1fr 1fr}}
        @media(max-width:600px){.hgrid{grid-template-columns:1fr}}

        /* ========== CTA ========== */
        .cta{
            position:relative;z-index:2;padding:120px 24px 80px;text-align:center;
            background:var(--bg2); border-top: 1px solid var(--line);
        }
        .cta h2{
            font-size:clamp(1.8rem,4vw,2.6rem);font-weight:700;color:var(--text-main);
            letter-spacing:-.02em;margin-bottom:12px;
        }
        .cta .sub{color:var(--text-sec);font-size:1rem;margin-bottom:32px}

        .foot{
            margin-top:80px;padding-top:24px;border-top:1px solid var(--line);
            max-width:760px;margin-left:auto;margin-right:auto;
        }
        .foot p{color:var(--text-sec);font-size:.9rem;margin-bottom:4px}
        .foot-links{
            display:flex;justify-content:center;align-items:center;gap:0;flex-wrap:wrap;
            color:var(--text-sec);font-size:.9rem;line-height:1.8;margin-top:2px;
        }
        .foot-links a,
        .foot-links a:visited,
        .foot-links a:hover,
        .foot-links a:active{
            color:var(--text-sec);text-decoration:none;
        }
        .foot-links a+a::before{
            content:'|';display:inline-block;margin:0 12px;color:var(--text-muted);
        }
        .hide-pc{display:none}
        @media(max-width:600px){
            .hide-mb{display:none}
            .hide-pc{display:inline}
            .foot p{line-height:1.8;margin-bottom:12px}
            .foot-links{gap:8px 0}
            .foot-links a+a::before{margin:0 8px}
        }

        /* ========== SUPPORT / LEGAL PAGES ========== */
        .page-shell{
            position:relative;z-index:2;
            max-width:1040px;margin:0 auto;
            padding:140px 32px 96px;
        }
        .page-hero{max-width:760px;margin-bottom:44px}
        .page-kicker{
            display:inline-flex;align-items:center;gap:8px;
            color:var(--primary);font-size:.86rem;font-weight:700;letter-spacing:.08em;
            margin-bottom:14px;
        }
        .page-kicker::before{content:none}
        .page-hero h1{
            color:var(--text-main);font-size:clamp(2.1rem,5vw,3.4rem);
            line-height:1.08;font-weight:800;letter-spacing:0;margin-bottom:18px;
        }
        .page-hero h1 .accent{color:var(--primary)}
        .page-hero p{font-size:1.05rem;line-height:1.75;color:var(--text-sec)}
        .support-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:36px 0 44px}
        .support-card{
            display:flex;flex-direction:column;gap:12px;min-height:210px;
            padding:24px;border-radius:18px;text-decoration:none;
            background:rgba(255,255,255,.035);border:1px solid var(--line);
            transition:.3s;color:var(--text-sec);
        }
        .support-card:hover{transform:translateY(-5px);background:var(--card-hover);border-color:var(--line-hover);box-shadow:0 18px 44px rgba(0,0,0,.36)}
        .support-icon{
            width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
            color:#fff;background:var(--primary);box-shadow:0 10px 28px var(--primary-glow);
        }
        .support-icon svg{width:22px;height:22px}
        .support-card h2{color:var(--text-main);font-size:1.2rem;line-height:1.25}
        .support-card p{font-size:.94rem;line-height:1.62;flex:1}
        .support-card strong{color:var(--text-main);font-size:.9rem;font-weight:600;word-break:break-all}
        .info-panel,.legal-doc{
            background:rgba(255,255,255,.025);border:1px solid var(--line);
            border-radius:20px;padding:28px;
        }
        .info-panel h2,.legal-doc h2{color:var(--text-main);font-size:1.32rem;margin-bottom:14px}
        .info-panel p,.legal-doc p{color:var(--text-sec);line-height:1.75;margin-bottom:12px}
        .info-panel ul,.legal-doc ul{padding-left:20px;color:var(--text-sec);line-height:1.72}
        .info-panel li,.legal-doc li{margin-bottom:7px}
        .legal-meta{color:var(--text-muted);font-size:.92rem;margin-bottom:24px}
        .legal-doc{max-width:880px}
        .legal-doc h2{margin-top:30px}
        .legal-doc h2:first-child{margin-top:0}
        .legal-doc h3{color:var(--text-main);font-size:1.05rem;margin:20px 0 8px}
        @media(max-width:900px){
            .support-grid{grid-template-columns:1fr}
            .support-card{min-height:auto}
        }
        @media(max-width:720px){
            .page-shell{padding:150px 22px 72px}
            .support-grid{margin-top:28px}
            .info-panel,.legal-doc{padding:22px;border-radius:18px}
        }

        /* ========== SCROLL REVEAL ========== */
        .sr{opacity:0;transform:translateY(24px);transition:all .8s ease}
        .sr.v{opacity:1;transform:translateY(0)}
        .sr-d1{transition-delay:.1s}.sr-d2{transition-delay:.2s}
        .sr-d3{transition-delay:.3s}.sr-d4{transition-delay:.4s}