:root{--xy-green: #4CAF50;--xy-green-deep: #2E7D32;--xy-green-soft: rgba(76, 175, 80, .1);--xy-cream: #FAF9F6;--xy-ink: #1f2329;--xy-body: #4e5969;--xy-muted: #86909c;--xy-card: #ffffff;--xy-border: rgba(0, 0, 0, .06);--xy-shadow: 0 4px 24px rgba(46, 125, 50, .08);--xy-shadow-lg: 0 12px 48px rgba(46, 125, 50, .12);--xy-night: #0F1A12;--xy-night-card: #16241A;--xy-night-border: rgba(110, 231, 160, .12);--xy-mint: #6EE7A0;--xy-mint-dim: rgba(110, 231, 160, .6);--xy-gold: #F5C542;--xy-coral: #FF6B6B;--xy-night-text: #f0f0f0;--xy-night-sub: #a8c5b4;--sp-xs: 8px;--sp-sm: 16px;--sp-md: 24px;--sp-lg: 48px;--sp-xl: 80px;--sp-2xl: 120px;--fs-hero: clamp(40px, 5vw, 60px);--fs-h2: clamp(28px, 3.2vw, 40px);--fs-h3: 22px;--fs-body: 16px;--fs-small: 14px;--fs-num: clamp(32px, 4vw, 48px);--r-sm: 10px;--r-md: 16px;--r-lg: 24px;--r-xl: 32px;--ease-out: cubic-bezier(.16, 1, .3, 1);--dur-fast: .2s;--dur-normal: .4s;--dur-slow: .8s;--max-w: 1200px;--nav-h: 72px}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:PingFang SC,Microsoft YaHei,-apple-system,BlinkMacSystemFont,sans-serif;font-size:var(--fs-body);color:var(--xy-ink);background:var(--xy-cream);-webkit-font-smoothing:antialiased;line-height:1.7}img{max-width:100%;display:block}a{text-decoration:none;color:inherit}button{border:none;cursor:pointer;font-family:inherit}.num{font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:-.02em}.reveal{opacity:0;transform:translateY(32px);transition:opacity var(--dur-slow) var(--ease-out),transform var(--dur-slow) var(--ease-out)}.reveal.visible{opacity:1;transform:translateY(0)}.reveal-d1{transition-delay:.1s}.reveal-d2{transition-delay:.2s}.reveal-d3{transition-delay:.3s}.reveal-d4{transition-delay:.4s}.reveal-d5{transition-delay:.5s}.container{max-width:var(--max-w);margin:0 auto;padding:0 var(--sp-md)}.section{padding:var(--sp-2xl) 0}.section-title{font-size:var(--fs-h2);font-weight:800;color:var(--xy-ink);text-align:center;margin-bottom:var(--sp-sm)}.section-sub{font-size:var(--fs-body);color:var(--xy-body);text-align:center;max-width:600px;margin:0 auto var(--sp-lg)}.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;background:linear-gradient(135deg,var(--xy-green),var(--xy-green-deep));color:#fff;font-size:var(--fs-body);font-weight:600;border-radius:999px;box-shadow:0 4px 16px #4caf5059;transition:transform var(--dur-fast) var(--ease-out),box-shadow var(--dur-fast) var(--ease-out)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 28px #4caf5073}.btn-ghost{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;background:transparent;color:var(--xy-green-deep);font-size:var(--fs-body);font-weight:600;border-radius:999px;border:2px solid var(--xy-green);transition:background var(--dur-fast),transform var(--dur-fast) var(--ease-out)}.btn-ghost:hover{background:var(--xy-green-soft);transform:translateY(-2px)}