:root{--nav-height:4.5rem;--content-max:80rem;--page-gutter:clamp(1.25rem,3.5vw,3.5rem);--page-inline:max(var(--page-gutter),calc((100vw - var(--content-max)) / 2 + var(--page-gutter)));--paper:#fbfcfa;--paper-soft:#f1f5f1;--paper-deep:#e4ece5;--ink:#10221c;--muted:#5f7067;--rust:#3b7463;--rust-light:#7da18f;--moss:#163b33;--accent:#b7efcf;--surface:var(--paper);--surface-muted:var(--paper-soft);--surface-strong:var(--paper-deep);--surface-inverse:var(--moss);--border:rgba(16,34,28,0.14);--border-strong:rgba(16,34,28,0.24);--text:var(--ink);--text-muted:var(--muted);--focus-ring:rgba(22,59,51,0.55);--font-body:"Aptos","Microsoft YaHei UI","Microsoft YaHei",sans-serif;--font-display:"STSong","SimSun","Songti SC",Georgia,serif;--font-heading:"Microsoft YaHei UI","Microsoft YaHei","PingFang SC","Noto Sans SC",sans-serif}*{box-sizing:border-box;padding:0;margin:0}html{scroll-behavior:smooth}body,html{min-height:100%}body{max-width:100vw;overflow-x:hidden;background:var(--paper);color:var(--ink);font-family:var(--font-body),"Noto Sans SC",sans-serif;font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}:root{--radius-sm:0.375rem;--radius-md:0.625rem;--radius-lg:1rem;--shadow-soft:0 1rem 2.5rem rgba(16,34,28,0.08);--shadow-card:0 0.5rem 1.5rem rgba(16,34,28,0.07);--space-section:clamp(4.5rem,8vw,7.5rem);--text-display:clamp(3rem,7vw,6.5rem);--text-title:clamp(2rem,4vw,4rem);--text-body:1rem;--text-label:0.72rem}:focus-visible{outline:2px solid var(--focus-ring);outline-offset:3px}::selection{background:var(--ink);color:var(--paper)}button,input,select,textarea{font:inherit}a,button{-webkit-tap-highlight-color:transparent}img{max-width:100%}.ds-container{width:min(var(--content-max),calc(100% - 2 * var(--page-gutter)));margin-inline:auto}.ds-section{padding-block:var(--space-section)}.ds-section-header{display:flex;align-items:end;justify-content:space-between;gap:2rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border)}.ds-section-header .ds-title{margin-top:.75rem}.ds-display{font-size:var(--text-display);line-height:.98;letter-spacing:-.065em}.ds-title{font-size:var(--text-title);line-height:1.04;letter-spacing:-.05em}.ds-label{color:var(--muted);font:700 var(--text-label)/1.4 ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:.1em;text-transform:uppercase}.ds-card{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--paper);box-shadow:var(--shadow-card)}.ds-action{display:inline-flex;align-items:center;justify-content:center;gap:.6rem;min-height:2.75rem;padding:.7rem 1rem;border:1px solid var(--moss);border-radius:var(--radius-sm);background:var(--moss);color:var(--paper);font-weight:700;transition:transform .18s ease,background .18s ease,color .18s ease}.ds-action:hover{transform:translateY(-1px);background:transparent;color:var(--moss)}.ds-meta{color:var(--muted);font-size:.84rem;line-height:1.65}@media (max-width:720px){.ds-section-header{display:grid;gap:1rem}}@media (prefers-reduced-motion:reduce){*,:after,:before{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}@media (max-width:860px){:root{--nav-height:6.7rem}}