:root{--color-primary: #1a9c5b;--color-primary-dark: #157a47;--color-primary-light: #e8f6ee;--color-text: #1f2d3d;--color-text-soft: #5b6b7b;--color-bg: #ffffff;--color-bg-soft: #f6f8fa;--color-border: #e5e9ef;--header-h: 72px;--maxw: 1200px;--radius: 10px;--shadow: 0 4px 20px rgba(31, 45, 61, .08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;color:var(--color-text);background:var(--color-bg);line-height:1.7;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}.section{padding:72px 0}.section--soft{background:var(--color-bg-soft)}.section__title{text-align:center;font-size:30px;font-weight:700;margin:0 0 8px}.section__subtitle{text-align:center;color:var(--color-text-soft);margin:0 0 48px;font-size:16px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:11px 22px;border-radius:var(--radius);font-weight:600;font-size:15px;cursor:pointer;transition:all .2s ease;border:1px solid transparent}.btn--primary{background:var(--color-primary);color:#fff}.btn--primary:hover{background:var(--color-primary-dark)}.btn--ghost{background:transparent;border-color:var(--color-primary);color:var(--color-primary)}.btn--ghost:hover{background:var(--color-primary-light)}.header{position:sticky;top:0;z-index:100;height:var(--header-h);background:#ffffffeb;backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--color-border)}.header__inner{height:100%;display:flex;align-items:center;justify-content:space-between}.logo{display:flex;align-items:center;gap:12px;font-size:23px;font-weight:800;color:var(--color-text)}.logo__img{width:48px;height:48px;object-fit:contain}.nav{display:flex;align-items:center;gap:36px}.nav__link{font-size:18px;color:var(--color-text);font-weight:600;letter-spacing:.5px;transition:color .2s}.nav__link:hover,.nav__link.is-active{color:var(--color-primary)}.nav__login{margin-left:8px}.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}.nav-toggle span{display:block;width:22px;height:2px;background:var(--color-text);margin:4px 0;transition:.3s}.hero{background:linear-gradient(135deg,#0f5132,#1a9c5b);color:#fff;padding:88px 0}.hero__inner{max-width:760px}.hero__eyebrow{display:inline-block;background:#ffffff26;padding:5px 14px;border-radius:999px;font-size:13px;margin-bottom:20px}.hero h1{font-size:42px;line-height:1.25;margin:0 0 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