:root{--ink:#1b1a24;--ink2:#4a4857;--paper:#faf7f2;--paper2:#f0ece2;--card:#fffdfa;--line:#e2dccf;--line2:#cbc3b1;--acc:hsl(104 70% 45%);--acc2:hsl(104 70% 38%);--accbg:hsl(104 76% 95%);--mut:#8a8575;--serif:"Noto Serif SC",Georgia,"Songti SC",serif;--sans:-apple-system,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;--mono:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace}
*{box-sizing:border-box}html{background:var(--paper)}
.ixa2afd0{margin:0;background:var(--paper);color:var(--ink);font:15.5px/1.75 var(--sans)}
a{color:inherit;text-decoration:none}img{display:block}
.ixa2afd0-skip{position:absolute;left:-999px}.ixa2afd0-skip:focus{left:10px;top:10px;background:var(--ink);color:#fff;padding:8px 12px;z-index:60}
/* 顶栏 */
.ixa2afd0-top{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:22px;padding:14px 32px;background:rgba(250,247,242,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line2)}
.ixa2afd0-logo{display:flex;align-items:center;gap:10px;flex:none}.ixa2afd0-lmk{width:32px;height:32px;background:var(--ink);color:var(--paper);display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-weight:900;font-size:18px;border-radius:3px}.ixa2afd0-lt{font-family:var(--serif);font-weight:900;font-size:19px;letter-spacing:-.3px}
.ixa2afd0-topnav{display:flex;gap:18px;flex:1;overflow:auto;white-space:nowrap}.ixa2afd0-topnav a{font-size:14px;font-weight:600;color:var(--ink2);padding:4px 0;border-bottom:2px solid transparent}.ixa2afd0-topnav a:hover{color:var(--acc);border-color:var(--acc)}
.ixa2afd0-q{flex:none;border:1px solid var(--line2);border-radius:20px;padding:6px 14px;background:var(--card)}.ixa2afd0-q input{border:0;background:transparent;outline:none;font-size:13px;width:110px;color:var(--ink)}
main{max-width:1180px;margin:0 auto;padding:0 32px}
/* 报头 */
.ixa2afd0-mast{padding:52px 0 30px;border-bottom:1px solid var(--line2);text-align:left}
.ixa2afd0-mast-sub{padding:34px 0 22px}
.ixa2afd0-mkick{font-family:var(--mono);font-size:11px;letter-spacing:3px;text-transform:uppercase;color:var(--acc);font-weight:700}
.ixa2afd0-mast h1{font-family:var(--serif);font-size:clamp(34px,6vw,64px);font-weight:900;letter-spacing:-1.4px;line-height:1.02;margin:14px 0 16px;text-align:left}
.ixa2afd0-mlede{color:var(--ink2);font-size:17px;line-height:1.8;max-width:62ch;margin:0}
.ixa2afd0-crumb{font-family:var(--mono);font-size:11px;color:var(--mut);margin-bottom:6px}.ixa2afd0-crumb a:hover{color:var(--acc)}.ixa2afd0-crumb span{color:var(--ink)}
/* 目录页 */
.ixa2afd0-contents{padding:34px 0;border-bottom:1px solid var(--line2)}
.ixa2afd0-ch-h{display:flex;align-items:baseline;gap:16px;margin-bottom:18px}.ixa2afd0-ch-h span:first-child{font-family:var(--serif);font-size:26px;font-weight:900;letter-spacing:6px}.ixa2afd0-ch-en{font-family:var(--mono);font-size:11px;letter-spacing:3px;color:var(--mut)}
.ixa2afd0-toc{list-style:none;margin:0;padding:0;columns:2;column-gap:56px}
.ixa2afd0-toc li{break-inside:avoid;margin:0 0 4px}
.ixa2afd0-toc a{display:flex;align-items:baseline;gap:10px;padding:9px 0;border-bottom:1px solid var(--line)}
.ixa2afd0-tc-no{font-family:var(--serif);font-size:13px;font-weight:700;color:var(--acc);width:34px;flex:none}
.ixa2afd0-tc-nm{font-weight:600;font-size:16px}.ixa2afd0-toc a:hover .ixa2afd0-tc-nm{color:var(--acc)}
.ixa2afd0-tc-dot{flex:1;border-bottom:1.5px dotted var(--line2);transform:translateY(-4px)}
.ixa2afd0-tc-pg{font-family:var(--mono);font-size:12px;color:var(--mut)}
/* 对开:左 rail + 右长卷 */
.ixa2afd0-spread{display:grid;grid-template-columns:200px 1fr;gap:48px;align-items:start;padding-top:36px}
.ixa2afd0-rail{position:sticky;top:78px}
.ixa2afd0-railin .ixa2afd0-rk{font-family:var(--mono);font-size:10px;letter-spacing:2px;text-transform:uppercase;color:var(--mut);display:block;margin-bottom:10px}
.ixa2afd0-railin ol{list-style:none;margin:0;padding:0;border-left:2px solid var(--line)}
.ixa2afd0-railin li a{display:flex;align-items:center;gap:9px;padding:7px 0 7px 14px;margin-left:-2px;border-left:2px solid transparent;font-size:13.5px;color:var(--mut);line-height:1.3}
.ixa2afd0-railin li a i{font-style:normal;font-family:var(--serif);font-size:12px;font-weight:700;opacity:.6}
.ixa2afd0-railin li a:hover,.ixa2afd0-railin li a.on{color:var(--acc);border-color:var(--acc);font-weight:700}.ixa2afd0-railin li a.on i{opacity:1}
.ixa2afd0-scroll{min-width:0}
.ixa2afd0-chap{margin-bottom:56px;scroll-margin-top:80px}
.ixa2afd0-chh{display:flex;align-items:flex-start;gap:18px;padding-bottom:16px;margin-bottom:26px;border-bottom:2px solid var(--ink)}
.ixa2afd0-chno{font-family:var(--serif);font-size:44px;font-weight:900;line-height:.8;color:var(--acc);flex:none;min-width:52px}
.ixa2afd0-chh h2{font-family:var(--serif);font-size:clamp(22px,3vw,30px);font-weight:900;letter-spacing:-.5px;margin:0 0 4px}
.ixa2afd0-chh p{color:var(--mut);font-size:14px;margin:0;max-width:54ch}
.ixa2afd0-chall{margin-left:auto;font-family:var(--mono);font-size:11px;color:var(--acc);white-space:nowrap;align-self:center;border-bottom:1px solid var(--acc)}
/* 大图特写块(左右交替) */
.ixa2afd0-feats{display:flex;flex-direction:column;gap:38px}
.ixa2afd0-feat{display:grid;grid-template-columns:1.05fr 1fr;gap:30px;align-items:center}
.ixa2afd0-feat:nth-child(even){grid-template-columns:1fr 1.05fr}
.ixa2afd0-feat:nth-child(even) .ixa2afd0-fimg{order:2}
.ixa2afd0-fimg{position:relative;aspect-ratio:16/10;overflow:hidden;border-radius:4px;background:var(--paper2)}
.ixa2afd0-fimg img{width:100%;height:100%;object-fit:cover;transition:.4s}.ixa2afd0-feat:hover .ixa2afd0-fimg img{transform:scale(1.045)}
.ixa2afd0-fdur{position:absolute;right:10px;bottom:10px;background:rgba(0,0,0,.72);color:#fff;font-family:var(--mono);font-size:11px;padding:3px 8px;border-radius:3px}
.ixa2afd0-fhot{position:absolute;left:10px;top:10px;background:var(--acc);color:#fff;font-size:11px;font-weight:700;padding:3px 9px;border-radius:3px}
.ixa2afd0-ftx{min-width:0}
.ixa2afd0-fno{font-family:var(--serif);font-size:13px;font-weight:700;color:var(--line2);letter-spacing:1px}
.ixa2afd0-fkick{font-family:var(--mono);font-size:11px;letter-spacing:2px;text-transform:uppercase;color:var(--acc);font-weight:700;margin-left:10px}
.ixa2afd0-ftx h3{font-family:var(--serif);font-size:clamp(20px,2.6vw,27px);font-weight:900;letter-spacing:-.5px;line-height:1.18;margin:10px 0 10px}
.ixa2afd0-feat:hover .ixa2afd0-ftx h3{color:var(--acc)}
.ixa2afd0-ftx p{color:var(--ink2);font-size:15px;line-height:1.72;margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.ixa2afd0-fmini{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:12px}.ixa2afd0-fmini em{font-style:normal;font-family:var(--mono);font-size:12px;color:var(--mut)}
.ixa2afd0-fgo{font-weight:700;color:var(--acc);border-bottom:2px solid var(--acc);padding-bottom:2px}
/* 标签场 */
.ixa2afd0-tags{display:flex;flex-wrap:wrap;gap:10px}
.ixa2afd0-tags a{display:inline-flex;align-items:center;gap:7px;padding:8px 15px;background:var(--card);border:1px solid var(--line);border-radius:22px;font-size:13.5px}
.ixa2afd0-tags a:hover{border-color:var(--acc);color:var(--acc);background:var(--accbg)}.ixa2afd0-tags i{font-style:normal;font-size:11px;color:var(--mut)}
/* FAQ */
.ixa2afd0-faq details{border-bottom:1px solid var(--line)}.ixa2afd0-faq summary{cursor:pointer;padding:16px 30px 16px 0;font-family:var(--serif);font-weight:700;font-size:17px;list-style:none;position:relative}.ixa2afd0-faq summary::-webkit-details-marker{display:none}.ixa2afd0-faq summary:after{content:"+";position:absolute;right:4px;top:13px;font-size:22px;color:var(--acc)}.ixa2afd0-faq details[open] summary:after{content:"−"}.ixa2afd0-faq p{margin:0 0 16px;color:var(--ink2)}
/* 详情 */
.ixa2afd0-article{max-width:780px;margin:0 auto;padding-top:34px}
.ixa2afd0-at{font-family:var(--serif);font-size:clamp(26px,3.8vw,42px);font-weight:900;letter-spacing:-.6px;line-height:1.1;margin:8px 0 12px;text-align:left}
.ixa2afd0-ameta{display:flex;flex-wrap:wrap;gap:16px;font-family:var(--mono);font-size:12px;color:var(--mut);border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:22px}
.ixa2afd0-mflag{background:var(--acc);color:#fff;padding:1px 8px;border-radius:3px}
.ixa2afd0-player{border-radius:6px;overflow:hidden;background:#000;margin-bottom:24px}#player{width:100%;display:block;aspect-ratio:16/9;background:#000}
.ixa2afd0-prose{font-family:var(--serif);font-size:17.5px}.ixa2afd0-prose p{margin:0 0 18px;line-height:1.95}
.ixa2afd0-hlbox{border-left:3px solid var(--acc);padding:4px 20px;margin:22px 0;background:var(--accbg);border-radius:0 6px 6px 0}.ixa2afd0-hlbox h3{font-family:var(--mono);font-size:12px;letter-spacing:2px;text-transform:uppercase;margin:12px 0 8px;color:var(--acc2)}.ixa2afd0-hlbox ul{margin:0 0 14px;padding-left:18px}.ixa2afd0-hlbox li{margin:6px 0}
.ixa2afd0-atags{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}.ixa2afd0-atags a{font-family:var(--mono);font-size:12.5px;color:var(--acc)}
.ixa2afd0-note{color:var(--mut);font-size:12.5px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:12px 0;margin:22px 0;line-height:1.6}
.ixa2afd0-pager{display:flex;justify-content:space-between;gap:16px;margin:26px 0;font-family:var(--serif)}.ixa2afd0-pager a{font-weight:700;max-width:46%}.ixa2afd0-pager a:hover{color:var(--acc)}
.ixa2afd0-idx{columns:2;column-gap:36px;list-style:none;margin:0;padding:0}.ixa2afd0-idx li{margin:0 0 8px;break-inside:avoid;font-family:var(--serif);font-size:15px}.ixa2afd0-idx a:hover{color:var(--acc)}
.ixa2afd0-empty{color:var(--mut);padding:30px 0;font-family:var(--serif)}
/* 页脚 */
.ixa2afd0-foot{max-width:1180px;margin:60px auto 0;padding:40px 32px;border-top:3px solid var(--ink);display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:36px}
.ixa2afd0-fcol h4{font-family:var(--serif);font-size:15px;font-weight:900;margin:0 0 12px}
.ixa2afd0-ftags a{display:inline-block;font-family:var(--mono);font-size:12px;color:var(--ink2);margin:0 12px 7px 0}.ixa2afd0-ftags a:hover{color:var(--acc)}
.ixa2afd0-fcol nav{display:flex;flex-direction:column;gap:7px}.ixa2afd0-fcol nav a{font-size:13.5px;color:var(--ink2)}.ixa2afd0-fcol nav a:hover{color:var(--acc)}
.ixa2afd0-fcol p{color:var(--mut);font-size:13px;line-height:1.6;margin:0 0 10px}.ixa2afd0-fcol>a{display:block;font-family:var(--mono);font-size:12px;color:var(--acc);margin-top:6px}
@media(max-width:900px){.ixa2afd0-spread{grid-template-columns:1fr;gap:0}.ixa2afd0-rail{display:none}.ixa2afd0-toc{columns:1}.ixa2afd0-footrow{}.ixa2afd0-foot{grid-template-columns:1fr 1fr}}
@media(max-width:620px){main{padding:0 18px}.ixa2afd0-top{padding:12px 18px;gap:14px}.ixa2afd0-feat,.ixa2afd0-feat:nth-child(even){grid-template-columns:1fr;gap:14px}.ixa2afd0-feat:nth-child(even) .ixa2afd0-fimg{order:0}.ixa2afd0-foot{grid-template-columns:1fr;padding:30px 18px}.ixa2afd0-mast{padding:34px 0 22px}}

/* ===== per-site mutation (29) ===== */
:root{--radius:8px;--sh2:0 10px 26px -18px rgba(20,15,40,.5)}
.ixa2afd0{background-image:radial-gradient(1200px 680px at 82% -8%,color-mix(in srgb,var(--acc) 7%,transparent),transparent 70%);background-attachment:fixed}
.ixa2afd0 h1,.ixa2afd0 h2{letter-spacing:-1px;font-weight:900}
.ixa2afd0-sec{margin-top:40px}
.ixa2afd0{--line:color-mix(in srgb,var(--acc) 30%,var(--line))}
.ixa2afd0-pcov,.ixa2afd0-tcov,.ixa2afd0-bcov,.ixa2afd0-cover,.ixa2afd0-poster,.ixa2afd0-cov{border-radius:14px}
.ixa2afd0-card:hover,.ixa2afd0-tile:hover,.ixa2afd0-book:hover,.ixa2afd0-big:hover{transform:translateY(-3px)}