:root{--color-primary: #0E7FA6;--color-primary-dark: #0A5C7A;--color-primary-deep: #0A3D52;--color-accent: #13B5A8;--color-accent-soft: #D9F1EE;--color-bg: #F5F8FB;--color-bg-secondary: #EDF3F7;--color-surface: #FFFFFF;--color-text: #14232F;--color-text-muted: #5C6B7A;--color-border: rgba(20, 35, 47, .1);--color-nav-bg: rgba(255, 255, 255, .86);--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", Roboto, Helvetica, Arial, sans-serif;--font-serif: Georgia, "Times New Roman", serif;--radius-lg: 1.5rem;--radius-md: .75rem;--radius-sm: .5rem;--container-max: 1280px;--shadow-card: 0 24px 60px rgba(14, 127, 166, .08);--shadow-hover: 0 28px 70px rgba(14, 127, 166, .14);--transition-smooth: all .5s cubic-bezier(.4, 0, .2, 1)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:7.5rem}body{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-text);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}h1,h2,h3,h4,h5{font-family:var(--font-sans);font-weight:700;line-height:1.2;color:var(--color-text)}a{color:inherit;text-decoration:none;transition:var(--transition-smooth)}ul{list-style:none}img{max-width:100%;display:block}::selection{background:#0e7fa62e}.glass-effect{background:var(--color-nav-bg);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--color-border)}.container{max-width:var(--container-max);margin:0 auto;padding:0 1.5rem}.section-padding{padding:6rem 0}.section-kicker{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--color-primary);margin-bottom:.75rem}.section-title{font-size:clamp(2rem,4vw,2.75rem);color:var(--color-text);letter-spacing:-.01em;margin-bottom:1rem}.section-lead{color:var(--color-text-muted);line-height:1.9;font-size:1.05rem}.fade-in-up{opacity:0;transform:translateY(24px);transition:opacity .7s ease-out,transform .7s ease-out}.fade-in-up.visible{opacity:1;transform:translateY(0)}.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s ease-out,transform .8s ease-out}.reveal.visible{opacity:1;transform:translateY(0)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.9rem 2rem;border-radius:var(--radius-md);font-weight:600;font-size:.95rem;cursor:pointer;border:none;transition:var(--transition-smooth)}.btn-primary{background:var(--color-primary);color:#fff;box-shadow:0 10px 26px #0e7fa652}.btn-primary:hover{background:var(--color-primary-dark);transform:translateY(-3px);box-shadow:0 16px 34px #0e7fa666}.btn-secondary{background:#ffffff1f;color:#fff;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.3)}.btn-secondary:hover{background:#ffffff38;transform:translateY(-3px)}.btn-ghost{background:transparent;color:var(--color-primary);border:1px solid var(--color-primary)}.btn-ghost:hover{background:var(--color-primary);color:#fff;transform:translateY(-3px)}.btn-dark{background:var(--color-text);color:#fff}.btn-dark:hover{background:var(--color-primary);color:#fff;transform:translateY(-3px)}.shell{width:min(960px,calc(100% - 32px));margin:0 auto;padding:24px 0 64px}.header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 0 20px;border:1px solid var(--line);border-width:0 0 1px}.brand{font-size:1rem;font-weight:700}.site-nav{display:flex;gap:16px;flex-wrap:wrap}.site-nav a{color:var(--text);font-size:.95rem}.site-nav a.primary{font-weight:700}.main{padding-top:32px}.main>*+*{margin-top:40px}.footer{display:grid;gap:12px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}.footer-copy,.footer-contact,.footer-meta{color:var(--muted);font-size:.95rem;line-height:1.7}.footer-links{display:flex;gap:16px;flex-wrap:wrap}.kicker,.meta{display:inline-block;margin-bottom:12px;color:var(--muted);font-size:.75rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase}h1,h2,h3{margin:0;line-height:1.2;font-weight:700}h1{max-width:16ch;font-size:clamp(2rem,6vw,3rem)}h2{font-size:1.5rem}h3{font-size:1.1rem}.page-section{display:grid;gap:16px}.intro,.section-head p,.simple-item p,.prose{color:var(--muted);font-size:.95rem;line-height:1.7}.actions{display:flex;gap:12px;flex-wrap:wrap}.link-button{display:inline-flex;align-items:center;min-height:40px;padding:0 14px;border:1px solid var(--line);background:var(--surface)}.link-button-secondary{color:var(--muted)}.section-head{display:grid;gap:8px}.simple-list{display:grid;gap:20px}.simple-item{display:grid;gap:12px;padding-top:20px;border:1px solid var(--line);border-width:1px 0 0}.simple-item:first-child{padding-top:0;border-top:0}.article-shell{max-width:720px}.prose{display:grid;gap:16px;margin-top:8px}.prose ul,.prose ol{margin:0;padding-left:20px}@media(max-width:900px){.header{align-items:flex-start;flex-direction:column}.section-padding{padding:4rem 0}}