:root{--color-primary: #1F5C4D;--color-primary-dark: #14453A;--color-primary-soft: #E7F0EB;--color-accent: #C2703D;--color-bg: #FAF7F1;--color-bg-deep: #122B25;--color-surface: #FFFFFF;--color-text: #1E2B27;--color-text-muted: #5C6B65;--color-border: rgba(30, 43, 39, .12);--color-border-soft: rgba(30, 43, 39, .08);--font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", -apple-system, "Segoe UI", sans-serif;--font-serif: "Songti SC", "Noto Serif SC", "SimSun", Georgia, serif;--font-num: "Georgia", "Times New Roman", serif;--radius-lg: 1.25rem;--radius-md: .75rem;--container-max: 1200px;--ease-base: cubic-bezier(.22, 1, .36, 1);--transition-smooth: all .5s cubic-bezier(.22, 1, .36, 1)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-padding-top:5rem}@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}body{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-text);line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden}h1,h2,h3,h4{font-family:var(--font-sans);font-weight:700;line-height:1.25;letter-spacing:.01em;text-wrap:balance}p{text-wrap:pretty}a:focus-visible,button:focus-visible,summary:focus-visible,details:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px;border-radius:4px}.skip-link{position:absolute;left:-9999px;top:.75rem;z-index:2000;padding:.5rem 1rem;background:var(--color-primary);color:#fff;border-radius:999px;font-size:.875rem}.skip-link:focus{left:.75rem}a{color:inherit;text-decoration:none;transition:var(--transition-smooth)}ul{list-style:none}img{max-width:100%;display:block}.section-kicker{display:inline-flex;align-items:center;gap:.6rem;font-size:.9rem;font-weight:600;color:var(--color-primary);letter-spacing:.08em}.section-kicker:before{content:"";width:1.75rem;height:2px;background:var(--color-accent);border-radius:1px}.glass-effect{background:var(--color-surface);backdrop-filter:none;-webkit-backdrop-filter:none;border:none}.container{max-width:var(--container-max);margin:0 auto;padding:0 1.5rem}.section-padding{padding:6rem 0}.fade-in-up{opacity:0;transform:translateY(32px);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1)}.fade-in-up.visible{opacity:1;transform:translateY(0)}.tagline-reveal{padding:6rem 0;background:var(--color-surface);text-align:center}.tagline-line{font-size:clamp(1.875rem,4.5vw,3rem);font-weight:700;line-height:1.4;max-width:680px;margin:0 auto .75rem;text-wrap:balance}.tagline-line .word{color:var(--color-text);opacity:.28;transition:opacity .7s cubic-bezier(.22,1,.36,1)}.tagline-line .word.on{opacity:1}@media(prefers-reduced-motion:reduce){.tagline-line .word{opacity:1}.fade-in-up{opacity:1;transform:none;transition:none}}.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}.brand{font-size:1rem;font-weight:700}.site-nav{display:flex;gap:16px;flex-wrap:wrap}.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}.footer-copy,.footer-contact,.footer-meta{color:var(--color-text-muted);font-size:.95rem;line-height:1.7}.footer-links{display:flex;gap:16px;flex-wrap:wrap}.meta{display:inline-block;margin-bottom:12px;color:var(--color-text-muted);font-size:.75rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase}h1,h2,h3{margin:0;font-weight:700}h1{max-width:20ch;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(--color-text-muted);font-size:.95rem;line-height:1.7}.actions{display:flex;gap:12px;flex-wrap:wrap}.link-button-secondary{color:var(--color-text-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(--color-border-soft);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}}