:root{--bg: #f5f1e8;--paper: #fffdf8;--paper-strong: #fff8ed;--line: #d7ccb7;--text: #1f2933;--muted: #5d6b78;--accent: #c96f34;--accent-soft: #ffe0bf;--shadow: 0 18px 50px rgba(94, 62, 28, .08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif;background:radial-gradient(circle at top left,rgba(255,224,191,.9),transparent 30%),linear-gradient(180deg,#fcf7ef 0%,var(--bg) 100%);color:var(--text)}a{color:inherit;text-decoration:none}.page-shell{min-height:100vh}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:1.5rem;padding:1rem 1.5rem;backdrop-filter:blur(16px);background:#fcf7efe0;border-bottom:1px solid rgba(201,111,52,.14)}.brand{display:flex;align-items:center;gap:.9rem}.brand-mark{display:grid;place-items:center;width:2.75rem;height:2.75rem;border-radius:1rem;background:linear-gradient(135deg,#1f2933,#c96f34);color:#fff;font-weight:800}.brand p,.article-meta,.eyebrow,.topnav a,.sidebar a{color:var(--muted)}.brand p{margin:.15rem 0 0;font-size:.84rem}.search-box{position:relative;flex:1;min-width:240px;max-width:420px}.search-label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.search-box input{width:100%;padding:.85rem 1rem;border:1px solid rgba(201,111,52,.18);border-radius:1rem;background:#fffdf8f2;color:var(--text);font:inherit;box-shadow:0 10px 24px #5e3e1c0f}.search-box input:focus{outline:2px solid rgba(201,111,52,.2);border-color:#c96f3473}.search-results{position:absolute;top:calc(100% + .5rem);left:0;right:0;padding:.7rem;border:1px solid rgba(215,204,183,.95);border-radius:1rem;background:#fffdf8fa;box-shadow:var(--shadow)}.search-results ul{list-style:none;margin:0;padding:0}.search-results li+li{margin-top:.4rem}.search-results a{display:block;padding:.8rem .9rem;border-radius:.9rem;transition:.18s ease}.search-results a:hover{background:var(--accent-soft)}.search-results strong,.search-results span,.search-results p{display:block}.search-results strong{font-size:.98rem}.search-results span,.search-empty{color:var(--muted);font-size:.82rem}.search-results p{margin:.28rem 0 0;color:var(--muted);font-size:.9rem;line-height:1.45}.search-empty{margin:0;padding:.6rem .7rem}.topnav{display:flex;flex-wrap:wrap;gap:.65rem}.topnav a{padding:.5rem .8rem;border-radius:999px;transition:.18s ease}.topnav a:hover,.sidebar a:hover,.sidebar a.active{background:var(--accent-soft);color:var(--accent)}.content-grid{display:grid;grid-template-columns:300px minmax(0,1fr);gap:1.5rem;width:min(1440px,calc(100% - 2rem));margin:1.5rem auto 3rem}.sidebar,.article-card{background:#fffdf8e0;border:1px solid rgba(215,204,183,.95);box-shadow:var(--shadow)}.sidebar{position:sticky;top:5.75rem;align-self:start;max-height:calc(100vh - 7rem);overflow:auto;padding:1.25rem 1rem;border-radius:1.5rem}.sidebar-group+.sidebar-group{margin-top:1.1rem;padding-top:1.1rem;border-top:1px dashed var(--line)}.sidebar h2{margin:0 0 .65rem;font-size:.96rem}.sidebar ul{list-style:none;margin:0;padding:0}.sidebar li+li{margin-top:.28rem}.sidebar a{display:block;padding:.5rem .7rem;border-radius:.9rem;font-size:.95rem}.article-wrap{min-width:0}.article-meta{display:flex;justify-content:space-between;gap:1rem;padding:0 .4rem .75rem;font-size:.88rem}.article-card{border-radius:2rem;padding:2rem}.ad-slot{display:grid;gap:.4rem;margin-top:1.5rem;padding:1rem 1.1rem;border:1px dashed rgba(201,111,52,.45);border-radius:1.2rem;background:linear-gradient(135deg,#ffefdbf2,#fff9f0f2),repeating-linear-gradient(-45deg,#c96f340a,#c96f340a 10px,#ffffff14 10px 20px);color:var(--muted)}.ad-slot-label{margin:0;font-size:.76rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}.ad-slot strong{font-size:1rem;color:var(--text)}.ad-slot span{font-size:.92rem;line-height:1.5}.ad-slot-sidebar{margin-top:1.3rem}.ad-slot-inline,.ad-slot-footer{margin-top:1.8rem}.hero{padding-bottom:1.4rem;border-bottom:1px dashed var(--line)}.hero h1{margin:0 0 1rem;font-size:clamp(2rem,4vw,3rem);line-height:1.05}.eyebrow{margin:0 0 .75rem;font-size:.8rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.explanation-section{padding-top:1.6rem}.prose{font-size:1.04rem;line-height:1.85}.prose>*:first-child{margin-top:0}.prose p,.prose ul,.prose ol,.prose blockquote{margin:0 0 1rem}.prose ul,.prose ol{padding-left:1.35rem}.prose h2,.prose h3{margin:1.5rem 0 .8rem;line-height:1.2}.prose code{padding:.1rem .4rem;border-radius:.4rem;background:#f1e4d5;font-size:.9em}.summary{padding:1rem 1.15rem;border-radius:1.25rem;background:var(--paper-strong)}@media(max-width:960px){.content-grid{grid-template-columns:1fr}.sidebar{position:static;max-height:none}.article-card{padding:1.35rem;border-radius:1.4rem}.topbar,.article-meta{flex-direction:column;align-items:flex-start}.search-box{width:100%;max-width:none}}