:root{--bg-color:#f6f8f7;--section-bg:#fff;--text-primary:#111827;--text-secondary:#5f6b7a;--text-muted:#8792a1;--accent-color:#176f6b;--accent-hover:#115e5a;--accent-deep:#0f3f3c;--accent-soft:#e7f2f1;--accent-tint:#f2f7f6;--accent-line:#176f6b29;--accent-shadow:#176f6b38;--green-color:var(--accent-color);--green-dark:var(--accent-deep);--green-soft:var(--accent-soft);--surface-raised:#ffffffd6;--border-light:#00000014;--shadow-soft:0 18px 50px #0f172a14;--shadow-medium:0 28px 80px #0f172a24;--font-sans:"Alibaba PuHuiTi 3.0", "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Noto Sans CJK SC", "Source Han Sans SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;--nav-height:72px;--max-width:1180px;--section-spacing:96px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background-color:var(--bg-color);color:var(--text-primary);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.5}a{color:inherit;text-decoration:none;transition:opacity .3s}a:hover{opacity:.7}ul{list-style:none}.glass{-webkit-backdrop-filter:blur(24px);border:1px solid var(--border-glass);background:#fff9}.glass-card{-webkit-backdrop-filter:blur(40px);box-shadow:var(--shadow-soft);background:#ffffffb3;border:1px solid #ffffff8c;border-radius:20px}.glass-dark{-webkit-backdrop-filter:blur(20px);color:#fff;background:#0006;border:1px solid #ffffff1a}.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}.hero-title{letter-spacing:0;color:var(--text-primary);margin-bottom:24px;font-size:72px;font-weight:700;line-height:1.1}.section-title{letter-spacing:0;color:var(--text-primary);margin-bottom:24px;font-size:46px;font-weight:700;line-height:1.2}.text-lg{color:var(--text-secondary);font-size:20px;line-height:1.6}.text-gradient{background:linear-gradient(135deg, var(--text-primary) 0%, #4b5563 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.btn{cursor:pointer;border:none;border-radius:14px;justify-content:center;align-items:center;padding:16px 32px;font-size:16px;font-weight:500;transition:all .3s;display:inline-flex}.btn-primary{background-color:var(--text-primary);color:#fff;box-shadow:0 4px 14px #0000001a}.btn-primary:hover{opacity:1;background-color:#000;transform:translateY(-2px);box-shadow:0 6px 20px #00000026}.btn-secondary{color:var(--text-primary);background-color:#0000000d}.btn-secondary:hover{opacity:1;background-color:#00000014}.btn-accent{background-color:var(--accent-color);color:#fff}.btn-accent:hover{background-color:var(--accent-hover);box-shadow:0 6px 20px var(--accent-shadow);opacity:1;transform:translateY(-2px)}section{padding:var(--section-spacing) 0;position:relative;overflow:hidden}section.bg-white{background-color:var(--section-bg)}.flex-between{justify-content:space-between;align-items:center;display:flex}.flex-center{justify-content:center;align-items:center;display:flex}.flex-column{flex-direction:column;display:flex}.no-scrollbar::-webkit-scrollbar{display:none}.no-scrollbar{-ms-overflow-style:none;scrollbar-width:none}button,a{-webkit-tap-highlight-color:transparent}img{max-width:100%}@media (max-width:900px){:root{--section-spacing:72px}.container{padding:0 18px}.hero-title{font-size:44px}.section-title{font-size:34px}}