*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
	:root{
		--bg:#0a0c10;
		--surface:#12151c;
		--surface-2:#1a1e28;
		--surface-3:#222838;
		--border:#2a3040;
		--accent:#22d3ee;
		--accent-dim:rgba(34,211,238,0.12);
		--accent-glow:rgba(34,211,238,0.25);
		--accent-2:#a78bfa;
		--accent-3:#f472b6;
		--text:#e8ecf4;
		--text-muted:#8892a4;
		--text-dim:#5a6478;
		--success:#34d399;
		--radius:16px;
		--radius-sm:10px;
		--radius-xs:6px;
	}
	html{scroll-behavior:smooth;font-size:16px}
	body{
		font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
		background:var(--bg);
		color:var(--text);
		line-height:1.7;
		overflow-x:hidden;
		-webkit-font-smoothing:antialiased;
	}
	a{color:var(--accent);text-decoration:none;transition:color .2s}
	a:hover{color:#67e8f9}
	.container{max-width:1200px;margin:0 auto;padding:0 24px}

	nav{
		position:fixed;top:0;left:0;right:0;z-index:100;
		background:rgba(10,12,16,0.82);
		backdrop-filter:blur(20px) saturate(1.4);
		border-bottom:1px solid var(--border);
	}
	.nav-inner{
		max-width:1200px;margin:0 auto;padding:0 24px;
		display:flex;align-items:center;justify-content:space-between;
		height:64px;
	}
	.nav-logo{
		display:flex;align-items:center;gap:10px;
		font-weight:700;font-size:1.15rem;color:var(--text);
	}
	.nav-logo svg{width:32px;height:32px}
	.nav-links{display:flex;gap:32px;list-style:none}
	.nav-links a{
		color:var(--text-muted);font-size:.9rem;font-weight:400;
		transition:color .2s;
	}
	.nav-links a:hover{color:var(--text)}
	.nav-cta{
		background:var(--accent);color:var(--bg);
		padding:8px 20px;border-radius:99px;font-weight:600;
		font-size:.85rem;transition:all .25s;border:none;cursor:pointer;
	}
	.nav-cta:hover{
		background:#67e8f9;color:var(--bg);
		box-shadow:0 0 24px var(--accent-glow);
	}

	.hero{
		min-height:100vh;display:flex;align-items:center;
		position:relative;overflow:hidden;
		padding:120px 0 80px;
	}
	.hero::before{
		content:'';position:absolute;
		width:900px;height:900px;
		background:radial-gradient(circle,rgba(34,211,238,0.08) 0%,transparent 70%);
		top:-200px;right:-200px;pointer-events:none;
	}
	.hero::after{
		content:'';position:absolute;
		width:600px;height:600px;
		background:radial-gradient(circle,rgba(167,139,250,0.06) 0%,transparent 70%);
		bottom:-100px;left:-100px;pointer-events:none;
	}
	.hero-grid{
		display:grid;grid-template-columns:1fr 1fr;gap:80px;
		align-items:center;position:relative;z-index:1;
	}
	.hero-badge{
		display:inline-flex;align-items:center;gap:8px;
		background:var(--accent-dim);border:1px solid rgba(34,211,238,0.2);
		padding:6px 16px;border-radius:99px;font-size:.8rem;
		color:var(--accent);font-weight:500;margin-bottom:24px;
	}
	.hero-badge .dot{
		width:6px;height:6px;border-radius:50%;
		background:var(--success);
		animation:pulse-dot 2s ease infinite;
	}
	@keyframes pulse-dot{
		0%,100%{opacity:1;transform:scale(1)}
		50%{opacity:.5;transform:scale(1.4)}
	}
	.hero h1{
		font-size:3.5rem;font-weight:900;line-height:1.15;
		margin-bottom:20px;letter-spacing:-0.02em;
	}
	.hero h1 .gradient{
		background:linear-gradient(135deg,var(--accent),var(--accent-2),var(--accent-3));
		-webkit-background-clip:text;-webkit-text-fill-color:transparent;
		background-clip:text;
	}
	.hero-desc{
		font-size:1.15rem;color:var(--text-muted);
		max-width:480px;margin-bottom:36px;line-height:1.8;
	}
	.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:32px}
	.btn-primary{
		display:inline-flex;align-items:center;gap:10px;
		background:linear-gradient(135deg,var(--accent),#06b6d4);
		color:var(--bg);padding:14px 32px;border-radius:99px;
		font-weight:700;font-size:1rem;border:none;cursor:pointer;
		transition:all .3s;box-shadow:0 4px 24px var(--accent-glow);
	}
	.btn-primary:hover{
		transform:translateY(-2px);
		box-shadow:0 8px 40px rgba(34,211,238,0.35);
		color:var(--bg);
	}
	.btn-primary svg{width:20px;height:20px}
	.btn-secondary{
		display:inline-flex;align-items:center;gap:10px;
		background:var(--surface-2);border:1px solid var(--border);
		color:var(--text);padding:14px 28px;border-radius:99px;
		font-weight:500;font-size:1rem;cursor:pointer;
		transition:all .25s;
	}
	.btn-secondary:hover{
		background:var(--surface-3);border-color:var(--text-dim);
		transform:translateY(-1px);
	}
	.hero-meta{
		display:flex;gap:24px;font-size:.85rem;color:var(--text-dim);
	}
	.hero-meta span{display:flex;align-items:center;gap:6px}

	.hero-visual{
		position:relative;display:flex;align-items:center;justify-content:center;
	}
	.hero-window{
		width:100%;max-width:520px;
		background:var(--surface);border:1px solid var(--border);
		border-radius:var(--radius);overflow:hidden;
		box-shadow:0 24px 80px rgba(0,0,0,0.5),0 0 0 1px rgba(255,255,255,0.03);
		animation:float 6s ease-in-out infinite;
	}
	@keyframes float{
		0%,100%{transform:translateY(0)}
		50%{transform:translateY(-12px)}
	}
	.window-bar{
		display:flex;align-items:center;gap:8px;
		padding:14px 18px;background:var(--surface-2);
		border-bottom:1px solid var(--border);
	}
	.window-dot{width:12px;height:12px;border-radius:50%}
	.window-dot.r{background:#ff5f57}
	.window-dot.y{background:#febc2e}
	.window-dot.g{background:#28c840}
	.window-title{
		margin-left:12px;font-size:.8rem;color:var(--text-dim);
		font-family:'JetBrains Mono',monospace;
	}
	.window-body{padding:24px}
	.translate-row{
		display:grid;grid-template-columns:1fr auto 1fr;gap:16px;
		align-items:start;
	}
	.lang-label{
		font-size:.75rem;color:var(--text-dim);text-transform:uppercase;
		letter-spacing:.08em;font-weight:600;margin-bottom:8px;
	}
	.lang-text{
		font-size:1.05rem;line-height:1.8;color:var(--text);
		min-height:80px;
	}
	.lang-text.target{color:var(--accent)}
	.swap-btn{
		width:40px;height:40px;border-radius:50%;
		background:var(--surface-3);border:1px solid var(--border);
		display:flex;align-items:center;justify-content:center;
		cursor:pointer;transition:all .25s;margin-top:24px;
		color:var(--text-muted);
	}
	.swap-btn:hover{
		background:var(--accent-dim);border-color:var(--accent);
		color:var(--accent);transform:rotate(180deg);
	}
	.dict-row{
		margin-top:20px;padding-top:20px;
		border-top:1px solid var(--border);
		display:flex;gap:12px;flex-wrap:wrap;
	}
	.dict-tag{
		display:inline-flex;align-items:center;gap:6px;
		background:var(--surface-3);padding:6px 14px;
		border-radius:99px;font-size:.78rem;color:var(--text-muted);
		border:1px solid var(--border);
	}
	.dict-tag .icon{font-size:.9rem}
	.word-graph{
		margin-top:16px;padding:16px;
		background:var(--surface-2);border-radius:var(--radius-sm);
		border:1px solid var(--border);
	}
	.word-graph-title{
		font-size:.78rem;color:var(--text-dim);margin-bottom:12px;
		font-weight:600;
	}
	.graph-nodes{display:flex;gap:8px;flex-wrap:wrap}
	.graph-node{
		padding:5px 12px;border-radius:99px;font-size:.75rem;
		font-weight:500;transition:all .2s;
	}
	.graph-node.c1{background:rgba(34,211,238,0.12);color:var(--accent);border:1px solid rgba(34,211,238,0.2)}
	.graph-node.c2{background:rgba(167,139,250,0.12);color:var(--accent-2);border:1px solid rgba(167,139,250,0.2)}
	.graph-node.c3{background:rgba(244,114,182,0.12);color:var(--accent-3);border:1px solid rgba(244,114,182,0.2)}
	.graph-node.c4{background:rgba(52,211,153,0.12);color:var(--success);border:1px solid rgba(52,211,153,0.2)}

	.stats-bar{
		padding:40px 0;
		border-top:1px solid var(--border);
		border-bottom:1px solid var(--border);
	}
	.stats-grid{
		display:grid;grid-template-columns:repeat(4,1fr);gap:32px;
		text-align:center;
	}
	.stat-num{
		font-size:2.2rem;font-weight:900;
		font-family:'Space Grotesk','Noto Sans SC',sans-serif;
		background:linear-gradient(135deg,var(--accent),var(--accent-2));
		-webkit-background-clip:text;-webkit-text-fill-color:transparent;
		background-clip:text;
	}
	.stat-label{font-size:.85rem;color:var(--text-muted);margin-top:4px}

	.features{padding:100px 0}
	.section-header{text-align:center;margin-bottom:64px}
	.section-tag{
		display:inline-block;font-size:.78rem;font-weight:600;
		color:var(--accent);text-transform:uppercase;
		letter-spacing:.15em;margin-bottom:12px;
	}
	.section-title{
		font-size:2.5rem;font-weight:900;margin-bottom:16px;
		letter-spacing:-0.01em;
	}
	.section-desc{
		font-size:1.05rem;color:var(--text-muted);
		max-width:560px;margin:0 auto;
	}
	.features-grid{
		display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
	}
	.feature-card{
		background:var(--surface);
		border:1px solid var(--border);
		border-radius:var(--radius);
		padding:32px;
		transition:all .35s;
		position:relative;overflow:hidden;
	}
	.feature-card::before{
		content:'';position:absolute;top:0;left:0;right:0;
		height:2px;background:linear-gradient(90deg,transparent,var(--accent),transparent);
		opacity:0;transition:opacity .35s;
	}
	.feature-card:hover{
		border-color:rgba(34,211,238,0.3);
		transform:translateY(-4px);
		box-shadow:0 16px 48px rgba(0,0,0,0.3);
	}
	.feature-card:hover::before{opacity:1}
	.feature-icon{
		width:52px;height:52px;border-radius:14px;
		display:flex;align-items:center;justify-content:center;
		font-size:1.5rem;margin-bottom:20px;
	}
	.feature-icon.i1{background:rgba(34,211,238,0.1);color:var(--accent)}
	.feature-icon.i2{background:rgba(167,139,250,0.1);color:var(--accent-2)}
	.feature-icon.i3{background:rgba(244,114,182,0.1);color:var(--accent-3)}
	.feature-icon.i4{background:rgba(52,211,153,0.1);color:var(--success)}
	.feature-icon.i5{background:rgba(251,191,36,0.1);color:#fbbf24}
	.feature-icon.i6{background:rgba(248,113,113,0.1);color:#f87171}
	.feature-card h3{
		font-size:1.15rem;font-weight:700;margin-bottom:10px;
	}
	.feature-card p{
		font-size:.92rem;color:var(--text-muted);line-height:1.7;
	}

	.dictionaries{padding:80px 0;background:var(--surface)}
	.dict-grid{
		display:grid;grid-template-columns:repeat(2,1fr);gap:24px;
	}
	.dict-card{
		background:var(--bg);border:1px solid var(--border);
		border-radius:var(--radius);padding:28px;
		display:flex;align-items:flex-start;gap:20px;
		transition:all .3s;
	}
	.dict-card:hover{
		border-color:rgba(34,211,238,0.2);
		transform:translateY(-2px);
	}
	.dict-cover{
		width:64px;height:80px;border-radius:var(--radius-xs);
		display:flex;align-items:center;justify-content:center;
		font-size:1.8rem;flex-shrink:0;
		background:linear-gradient(135deg,var(--surface-2),var(--surface-3));
		border:1px solid var(--border);
	}
	.dict-info h4{font-size:1.05rem;font-weight:700;margin-bottom:6px}
	.dict-info p{font-size:.85rem;color:var(--text-muted);line-height:1.6}
	.dict-info .dict-meta{
		margin-top:8px;font-size:.78rem;color:var(--text-dim);
		display:flex;gap:16px;
	}

	.screenshots{padding:100px 0}
	.screens-row{
		display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
		margin-top:48px;
	}
	.screen-item{
		border-radius:var(--radius);overflow:hidden;
		border:1px solid var(--border);
		background:var(--surface);
		transition:all .35s;
		aspect-ratio:16/10;
		display:flex;align-items:center;justify-content:center;
		position:relative;
	}
	.screen-item:hover{
		transform:scale(1.03);
		box-shadow:0 20px 60px rgba(0,0,0,0.4);
	}
	.screen-placeholder{
		text-align:center;color:var(--text-dim);
	}
	.screen-placeholder .icon{font-size:2.5rem;margin-bottom:8px}
	.screen-placeholder .label{font-size:.85rem}

	.how-it-works{padding:100px 0;background:var(--surface)}
	.steps{
		display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
		margin-top:48px;position:relative;
	}
	.steps::before{
		content:'';position:absolute;top:36px;
		left:calc(12.5% + 12px);right:calc(12.5% + 12px);
		height:2px;background:var(--border);
	}
	.step{text-align:center;position:relative;z-index:1}
	.step-num{
		width:72px;height:72px;border-radius:50%;
		background:var(--bg);border:2px solid var(--border);
		display:flex;align-items:center;justify-content:center;
		font-size:1.5rem;font-weight:900;
		font-family:'Space Grotesk',sans-serif;
		color:var(--accent);margin:0 auto 20px;
		transition:all .3s;
	}
	.step:hover .step-num{
		border-color:var(--accent);
		box-shadow:0 0 24px var(--accent-glow);
	}
	.step h4{font-size:1rem;font-weight:700;margin-bottom:8px}
	.step p{font-size:.85rem;color:var(--text-muted);line-height:1.6}

	.faq{padding:100px 0}
	.faq-list{max-width:720px;margin:48px auto 0}
	.faq-item{
		border:1px solid var(--border);
		border-radius:var(--radius-sm);
		margin-bottom:12px;
		overflow:hidden;
		transition:border-color .25s;
	}
	.faq-item:hover{border-color:rgba(34,211,238,0.2)}
	.faq-q{
		display:flex;align-items:center;justify-content:space-between;
		padding:20px 24px;cursor:pointer;
		font-weight:600;font-size:1rem;
		background:var(--surface);
		transition:background .2s;
		user-select:none;
	}
	.faq-q:hover{background:var(--surface-2)}
	.faq-q .arrow{
		transition:transform .3s;font-size:.9rem;color:var(--text-dim);
	}
	.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
	.faq-a{
		max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease, padding .35s ease;
    background: var(--surface);
	}
	.faq-item.open .faq-a{max-height:1200px;padding:0 24px 20px}
	.faq-a p{ margin: 12px 0;
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.7;}
	.faq-a ul,
.faq-a ol {
    margin: 8px 0 12px 20px;
    padding-left: 8px;
}

.faq-a li {
    margin: 6px 0;
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.faq-a strong {
    color: var(--accent);
    font-weight: 600;
}

/* 可选：为多级列表增加缩进 */
.faq-a ul ul {
    margin-left: 20px;
}

	.download-cta{
		padding:100px 0;
		text-align:center;
		position:relative;
	}
	.download-cta::before{
		content:'';position:absolute;
		width:800px;height:400px;
		background:radial-gradient(ellipse,rgba(34,211,238,0.06) 0%,transparent 70%);
		left:50%;top:50%;transform:translate(-50%,-50%);
		pointer-events:none;
	}
	.download-cta .section-title{font-size:2.8rem;margin-bottom:12px}
	.download-cta .section-desc{margin-bottom:40px}
	.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
	.btn-large{
		padding:18px 44px;font-size:1.1rem;border-radius:99px;
		font-weight:700;cursor:pointer;transition:all .3s;
		display:inline-flex;align-items:center;gap:10px;
	}
	.btn-large.primary{
		background:linear-gradient(135deg,var(--accent),#06b6d4);
		color:var(--bg);border:none;
		box-shadow:0 4px 32px var(--accent-glow);
	}
	.btn-large.primary:hover{
		transform:translateY(-3px);
		box-shadow:0 8px 48px rgba(34,211,238,0.4);
		color:var(--bg);
	}
	.btn-large.secondary{
		background:transparent;
		border:1px solid var(--border);
		color:var(--text);
	}
	.btn-large.secondary:hover{
		border-color:var(--text-dim);
		background:var(--surface);
	}
	.btn-large svg{width:22px;height:22px}
	.cta-note{
		margin-top:20px;font-size:.82rem;color:var(--text-dim);
	}
	.os-links{
		display:flex;gap:24px;justify-content:center;margin-top:32px;
	}
	.os-link{
		display:flex;align-items:center;gap:8px;
		color:var(--text-muted);font-size:.85rem;
		transition:color .2s;
	}
	.os-link:hover{color:var(--accent)}

	footer{
		border-top:1px solid var(--border);
		padding:48px 0 32px;
	}
	.footer-grid{
		display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;
		margin-bottom:40px;
	}
	.footer-brand p{
		font-size:.85rem;color:var(--text-muted);
		margin-top:12px;line-height:1.7;
	}
	.footer-col h5{
		font-size:.82rem;font-weight:700;text-transform:uppercase;
		letter-spacing:.1em;color:var(--text-dim);margin-bottom:16px;
	}
	.footer-col ul{list-style:none}
	.footer-col li{margin-bottom:10px}
	.footer-col a{color:var(--text-muted);font-size:.88rem}
	.footer-col a:hover{color:var(--accent)}
	.footer-bottom{
		display:flex;justify-content:space-between;align-items:center;
		padding-top:24px;border-top:1px solid var(--border);
		font-size:.8rem;color:var(--text-dim);
	}
	.footer-legal{display:flex;gap:24px}
	.footer-legal a{color:var(--text-dim)}
	.footer-legal a:hover{color:var(--text-muted)}

	@media(max-width:1024px){
		.hero-grid{grid-template-columns:1fr;gap:48px;text-align:center}
		.hero-desc{margin:0 auto 36px}
		.hero-actions{justify-content:center}
		.hero-meta{justify-content:center}
		.hero-visual{order:-1}
		.features-grid{grid-template-columns:repeat(2,1fr)}
		.steps{grid-template-columns:repeat(2,1fr)}
		.steps::before{display:none}
		.dict-grid{grid-template-columns:1fr}
		.footer-grid{grid-template-columns:1fr 1fr}
	}
	@media(max-width:640px){
		.hero h1{font-size:2.2rem}
		.section-title{font-size:1.8rem}
		.features-grid{grid-template-columns:1fr}
		.stats-grid{grid-template-columns:repeat(2,1fr)}
		.steps{grid-template-columns:1fr}
		.screens-row{grid-template-columns:1fr}
		.translate-row{grid-template-columns:1fr}
		.swap-btn{margin:8px auto}
		.nav-links{display:none}
		.footer-grid{grid-template-columns:1fr}
		.footer-bottom{flex-direction:column;gap:12px;text-align:center}
	}

	.fade-in{opacity:0;transform:translateY(30px);transition:all .7s cubic-bezier(.22,1,.36,1)}
	.fade-in.visible{opacity:1;transform:translateY(0)}