:root{--ink:#162538;--muted:#647181;--red:#bc2d3d;--paper:#fff;--line:#dce3e9;--reader-size:18px;--max:1392px;--header:76px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:104px}body{margin:0;background:#f4f6f8;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",sans-serif;line-height:1.75}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-underline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #c82f3d;outline-offset:4px}button:disabled{opacity:.35;cursor:not-allowed}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;top:-100px;left:24px;z-index:100;background:#fff;padding:10px 20px}.skip-link:focus{top:10px}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line)}.header-inner{max-width:var(--max);height:var(--header);margin:auto;display:flex;align-items:center;justify-content:space-between;padding:0 32px;gap:24px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:750;font-size:17px;line-height:1.4;white-space:nowrap}.brand small{display:block;font-size:11px;font-weight:400;letter-spacing:1.8px;color:var(--muted);margin-top:3px}.brand-mark{display:grid;place-items:center;width:40px;height:42px;background:#13283f;color:#fff;font:bold 28px/1 Arial;border-radius:8px;border-bottom:4px solid var(--red)}.header-actions{display:flex;align-items:center;gap:18px}.quiet-button,.text-button{border:0;background:transparent;color:var(--muted);padding:6px 0;font-size:14px}.quiet-button:hover,.text-button:hover{color:var(--red)}kbd{font:11px/1.3 Arial;padding:4px 5px;margin-left:8px;border:1px solid #dce2e8;border-radius:4px;color:#7b8794}.download-link{font-size:14px;text-decoration:none;font-weight:700;padding:8px 14px;border:1px solid #bfc9d4;border-radius:6px}.download-link:hover{border-color:var(--red);color:var(--red)}.menu-button{display:none;background:#13283f;color:white;border:0;border-radius:5px;padding:7px 13px;font-size:14px}.reading-track{height:3px;background:#edf1f4;position:absolute;bottom:-1px;left:0;right:0}.reading-track span{display:block;width:0;height:100%;background:var(--red)}main{max-width:var(--max);margin:auto;padding:0 32px}.hero{padding:66px 0 45px;display:grid;grid-template-columns:1.05fr 1fr;gap:65px;align-items:center}.eyebrow{font-size:13px;letter-spacing:2px;color:var(--red);font-weight:700;margin:0 0 17px}.hero h1{font-size:clamp(32px,3.6vw,49px);font-weight:800;letter-spacing:-1.2px;line-height:1.38;margin:0 0 22px;color:#10263c}.hero-description{font-size:17px;line-height:1.95;max-width:520px;color:#4c5d6d;margin:0 0 22px}.hero-meta{display:flex;gap:21px;font-size:12px;color:#667584;flex-wrap:wrap;margin-bottom:27px}.hero-meta span+span{position:relative}.hero-meta span+span:before{content:"";width:3px;height:3px;background:#a9b4bf;position:absolute;left:-12px;top:9px;border-radius:50%}.hero-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap}.primary-button,.secondary-button{display:inline-flex;align-items:center;justify-content:center;gap:18px;text-decoration:none;border:1px solid #142a40;border-radius:6px;padding:11px 20px;font-size:14px;font-weight:700;line-height:1.5}.primary-button{color:#fff;background:#142a40}.primary-button:hover{background:#263f59}.secondary-button{background:#fff;color:#23394f;border-color:#c7d1dc}.secondary-button:hover{border-color:#8e9dad}.resume-link{font-size:13px;color:var(--red)}.hero-media{margin:0;position:relative}.hero-media:before{content:"";position:absolute;z-index:-1;inset:-12px 18px 45px -12px;border:1px solid #d7e0e7;border-radius:6px}.hero-media img{display:block;width:100%;height:auto;border:1px solid #d8e0e8;border-radius:5px;box-shadow:0 16px 35px rgba(23,42,63,.08)}.hero-media figcaption{display:flex;gap:12px;margin-top:17px;font-size:12px;color:#617183}.hero-media figcaption span{font-weight:bold;color:var(--red)}.workflow{border-top:1px solid #d7e0e7;border-bottom:1px solid #d7e0e7;padding:22px 0 24px;margin-bottom:48px}.workflow-label{font-size:12px;font-weight:bold;color:#66788a;letter-spacing:1px;margin:0 0 18px}.workflow ol{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(8,1fr);gap:15px}.workflow li{font-size:12px;line-height:1.6;position:relative}.workflow li span{display:block;font:bold 19px/1.3 Arial;color:var(--red);margin-bottom:8px}.workflow li:not(:last-child):after{content:"›";position:absolute;right:0;top:0;color:#a2b0bd;font-size:23px}.reading-layout{display:grid;grid-template-columns:239px minmax(0,1fr);gap:44px;align-items:start}.sidebar{position:sticky;top:109px;padding:6px 6px 25px 0;max-height:calc(100vh - 132px);overflow:auto;scrollbar-width:thin}.sidebar-top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:16px}.sidebar-label{font-size:13px;font-weight:bold;margin:0}.reading-percent{font-size:11px;color:#738395;margin:0}.reading-percent span{color:var(--red);font-weight:700}.sidebar nav,.toc-dialog nav{display:grid;gap:5px}.sidebar nav a,.toc-dialog nav a{display:flex;align-items:flex-start;gap:11px;line-height:1.65;text-decoration:none;padding:10px 11px;border-radius:4px;font-size:13px;color:#536374;border-left:3px solid transparent}.nav-number{font:12px/1.8 Arial;color:#8996a3;flex-shrink:0;padding-top:1px}.sidebar nav a:hover,.toc-dialog nav a:hover{background:#eaf0f5;color:#23394f}.sidebar nav a[aria-current="location"],.toc-dialog nav a[aria-current="location"]{background:#fff;border-left-color:var(--red);color:#162b41;font-weight:bold}.sidebar nav a[aria-current="location"] .nav-number{color:var(--red)}.reader-controls{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-top:21px;margin-top:20px;font-size:12px;color:#647181}.reader-controls>div{display:flex;gap:7px;align-items:center}.reader-controls button{border:1px solid #c8d2dc;border-radius:4px;background:white;color:#20374f;padding:3px 7px;font:13px/1.6 Arial}.reader-controls output{min-width:25px;text-align:center;font-size:11px}.sidebar-download{display:block;font-size:12px;margin:24px 0 8px;color:#435870}.article{background:white;border:1px solid #e0e6ec;border-radius:7px;min-width:0;padding:40px clamp(28px,4.1vw,64px) 25px}.article section{scroll-margin-top:0;padding:12px 0 41px}.article section+section{border-top:1px solid #e5e9ee;padding-top:45px}.chapter-label{font-size:11px;color:#b42a3b;letter-spacing:2px;font-weight:700;margin-bottom:12px}.article h2{font-size:clamp(23px,2vw,29px);line-height:1.5;margin:0 0 26px;letter-spacing:-.45px;color:#101c2a}.article h3{font-size:19px;line-height:1.6;margin:33px 0 14px;color:#172737}.article p,.article li{font-size:var(--reader-size);line-height:1.95;color:#344251}.article p{margin:0 0 19px}.article ol{margin:0 0 24px;padding-left:1.45em}.article li{margin:8px 0;padding-left:4px}.article strong{color:#172737}.tablewrap{overflow:auto;margin:23px 0 28px;scrollbar-width:thin}table{width:100%;border-collapse:collapse;font-size:15px;line-height:1.75}th,td{border:1px solid #dce3e9;padding:13px 15px;text-align:left;vertical-align:middle;overflow-wrap:anywhere}th{background:#22374d;color:white;font-weight:600}tbody tr:nth-child(even){background:#f4f7f9}td:first-child{font-weight:600;color:#23384d;width:25%}.prompt{background:#f6f8fa;border:1px solid #e1e7ed;border-radius:6px;padding:0 21px 22px;margin:20px 0 28px}.prompt-toolbar{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #e0e6ec;padding:12px 0;margin-bottom:17px;gap:12px}.prompt-toolbar>span{font-size:11px;color:#778695;letter-spacing:.4px}.prompt button,.bank-prompt button{font-size:12px;line-height:1.5;background:white;border:1px solid #cbd5df;border-radius:4px;padding:5px 11px;color:#ae2839;min-width:61px}.prompt button:hover,.bank-prompt button:hover{border-color:#b72d3e}pre{white-space:pre-wrap;overflow-wrap:anywhere;margin:0;font:16px/1.95 "Microsoft YaHei","PingFang SC",sans-serif;color:#35485b}.article figure{margin:28px 0}.figure-button{display:block;width:100%;border:1px solid #dfe5eb;background:#fff;padding:7px;border-radius:5px;cursor:zoom-in}.figure-button:hover{border-color:#aebdcb}.figure-button img{display:block;width:100%;height:auto}.article figcaption{font-size:12px;line-height:1.8;color:#718091;margin-top:11px;text-align:center}.figure-hint{margin-left:13px;color:#b72d3e;white-space:nowrap}.check-summary{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #e2e8ee;padding-bottom:10px;margin-bottom:16px;font-size:13px;color:#647181}.check-summary button{font-size:12px}.checklist{list-style:none;padding:0;margin:0 0 27px}.checklist li{margin:0!important;padding:11px 0!important;border-bottom:1px solid #eef1f4}.checklist label{display:flex;gap:13px;align-items:flex-start;cursor:pointer}.checklist input{accent-color:#b62d3d;width:18px;height:18px;flex-shrink:0;margin:8px 0 0}.checklist input:checked+span{color:#758493;text-decoration:line-through}.chapter-end{display:flex;justify-content:flex-end;margin-top:29px}.chapter-end a{font-size:13px;color:#a82b3a;text-decoration:none}.chapter-end a:hover{text-decoration:underline}.article-foot{border-top:1px solid #e2e8ee;padding:26px 0 9px}.article-foot p{font-size:12px;color:#7a8794;margin-bottom:10px}.article-foot a{font-size:12px;color:#50677d;margin-right:25px;display:inline-block}.site-footer{max-width:var(--max);margin:37px auto 0;padding:26px 32px;display:flex;justify-content:space-between;color:#7c8997;font-size:12px}.site-footer a{text-decoration:none}dialog{border:1px solid #dce3ea;border-radius:12px;max-width:calc(100vw - 32px);max-height:88vh;padding:26px 28px;box-shadow:0 30px 100px rgba(0,0,0,.2);color:var(--ink);background:white}dialog::backdrop{background:rgba(14,28,44,.65);backdrop-filter:blur(3px)}.dialog-header{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:21px}.dialog-header h2{font-size:22px;line-height:1.5;margin:0;color:#15283d}.dialog-header p{font-size:13px;color:#65778a;margin:6px 0 0}.close-button{font:28px/1 Arial;background:#f1f4f7;border:0;color:#42566d;border-radius:5px;min-width:34px;height:34px;flex-shrink:0}.search-dialog{width:660px}.search-dialog input{width:100%;border:1px solid #aebdcd;border-radius:6px;padding:12px 15px;font-size:16px;background:white;color:#1b334c}.dialog-help{font-size:13px;color:#6b7c8e;margin:15px 0}.search-results{padding:0;list-style:none;margin:0;max-height:48vh;overflow:auto}.search-results li+li{border-top:1px solid #e5eaf0}.search-results button{display:block;width:100%;padding:13px 10px;text-align:left;border:0;background:white;border-radius:4px}.search-results button:hover{background:#f3f6f9}.search-results strong{display:block;font-size:15px;color:#21374d}.search-results small{display:block;font-size:12px;color:#6c7c8b;line-height:1.8;margin-top:4px}.toc-dialog{width:450px}.toc-dialog nav{margin-bottom:25px}.toc-dialog>.quiet-button{margin:10px 0 0 20px}.prompt-dialog{width:810px}.bank-actions{display:flex;gap:20px;align-items:center;margin-bottom:24px}.bank-actions a{font-size:13px;color:#5c7185}.bank-prompt{border-top:1px solid #e1e7ec;padding:15px 0}.bank-prompt summary{font-size:15px;font-weight:600;cursor:pointer;line-height:1.7}.bank-prompt pre{font-size:15px;padding:20px 0 12px}.bank-prompt button{display:block;margin-left:auto}.image-dialog{width:1450px;padding:17px 20px;overflow:hidden}.image-dialog .dialog-header{align-items:center;margin-bottom:15px}.image-dialog .dialog-header>div{display:flex;gap:18px;align-items:center}.image-dialog h2{font-size:18px}.image-viewport{overflow:auto;max-height:68vh;background:#f4f6f8;overscroll-behavior:contain}.image-viewport img{display:block;max-width:100%;max-height:68vh;width:auto;height:auto;margin:auto;object-fit:contain}.image-viewport.is-natural img{max-width:none;max-height:none;width:auto;height:auto;margin:0}.image-dialog>p{font-size:12px;color:#6c7b8b;margin:12px 0 0}.toast{position:fixed;bottom:27px;left:50%;transform:translateX(-50%) translateY(15px);background:#142b42;color:#fff;padding:10px 20px;border-radius:6px;font-size:13px;opacity:0;pointer-events:none;transition:.18s ease;z-index:100;max-width:90vw;text-align:center}.toast.visible{opacity:1;transform:translateX(-50%) translateY(0)}
@media(min-width:1700px){:root{--max:1460px}.hero{gap:90px}.article{padding-left:75px;padding-right:75px}}
@media(max-width:1100px){.reading-layout{grid-template-columns:205px minmax(0,1fr);gap:25px}.hero{gap:35px}.article{padding:30px}.sidebar nav a{padding:9px 6px;font-size:12px}.header-actions{gap:14px}.hero-meta{gap:16px}.workflow ol{grid-template-columns:repeat(4,1fr);gap:20px}.workflow li:nth-child(4):after{display:none}}
@media(max-width:820px){:root{--header:66px}.header-inner{padding:0 21px}.brand{font-size:15px}.brand-mark{width:34px;height:36px;font-size:24px}.header-actions{gap:16px}.header-actions .download-link,.header-actions .bank-link,kbd{display:none}.menu-button{display:block}main{padding:0 22px}.hero{grid-template-columns:1fr;gap:30px;padding:35px 0 30px}.hero-copy{max-width:680px}.hero h1{font-size:37px}.hero h1 br{display:block}.hero-media{max-width:610px}.hero-media:before{display:none}.hero-description{max-width:650px}.workflow{margin-bottom:28px}.reading-layout{display:block}.sidebar{display:none}.article{padding:30px 29px}.article section{scroll-margin-top:0}.article h2{font-size:25px}.site-footer{padding:25px 22px}.workflow li{font-size:12px}.hero-media figcaption{font-size:12px}}
@media(max-width:480px){:root{--reader-size:17px}.header-inner{padding:0 15px;gap:8px}.brand{font-size:14px;gap:8px}.brand small{font-size:9px;letter-spacing:1px}.brand-mark{width:30px;height:32px}.header-actions{gap:12px}.header-actions>.quiet-button{font-size:12px}.menu-button{font-size:12px;padding:6px 10px}main{padding:0 14px}.hero{padding-top:29px}.eyebrow{font-size:11px;letter-spacing:1px}.hero h1{font-size:32px;letter-spacing:-.7px}.hero-description{font-size:15px;line-height:1.9}.hero-meta{font-size:11px;gap:19px}.hero-actions{gap:10px}.primary-button,.secondary-button{padding:10px 15px;font-size:13px}.hero-media figcaption{font-size:11px;gap:8px;flex-wrap:wrap}.workflow ol{grid-template-columns:repeat(2,1fr);gap:16px 24px}.workflow li:nth-child(even):after{display:none}.workflow li span{font-size:17px;margin-bottom:5px}.article{padding:23px 19px;border-radius:5px}.article h2{font-size:23px;margin-bottom:22px}.article h3{font-size:18px;margin-top:28px}.article section+section{padding-top:35px}.article p,.article li{line-height:1.9}table{font-size:13px;line-height:1.75}th,td{padding:10px 9px;min-width:78px}th:first-child,td:first-child{min-width:94px}.prompt{padding:0 14px 17px}.prompt-toolbar>span{font-size:10px}pre{font-size:15px;line-height:1.95}.figure-button{padding:4px}.figure-hint{display:block;margin-left:0}.article figcaption{font-size:11px}.checklist input{width:17px;height:17px}.checklist label{gap:10px}.site-footer{font-size:10px;padding:22px 15px;gap:20px}.article-foot a{margin-top:6px}.resume-link{width:100%}dialog{padding:21px 18px;border-radius:8px;max-width:calc(100vw - 22px)}.dialog-header h2{font-size:19px}.dialog-header{gap:10px}.image-dialog{padding:14px 10px}.image-dialog h2{font-size:15px}.image-dialog .dialog-header>div{gap:8px}.image-dialog .quiet-button{font-size:11px}.bank-actions{gap:15px}.bank-actions .primary-button{font-size:12px}.check-summary{font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
@media print{.site-header,.sidebar,.hero-media,.hero-actions,.hero-meta,.workflow,.chapter-end,.prompt-toolbar,.site-footer,.article-foot,dialog,.toast,.skip-link,.figure-hint,.check-summary{display:none!important}body{background:white;color:black}main{max-width:none;padding:0}.hero{display:block;padding:0 0 25px}.eyebrow{color:#000;font-size:10pt}.hero h1{font-size:24pt;color:#000}.hero h1 br{display:none}.hero-description{font-size:11pt;max-width:none}.reading-layout{display:block}.article{border:0;padding:0}.article section{padding:0 0 15px;break-before:page}.article section:first-child{break-before:auto}.article section+section{border:0;padding-top:0}.article h2{font-size:17pt;color:#000}.article h3{font-size:12pt;color:#000;break-after:avoid}.article p,.article li,pre{font-size:11pt;line-height:1.65;color:#000}.chapter-label{color:#000}table{font-size:10pt}th{background:#e9edf2;color:#000}tr,figure{break-inside:avoid}.prompt{background:none;border:0;padding:0 12px;margin:15px 0}figure img{max-height:90mm;object-fit:contain}.figure-button{border:0}.article figcaption{font-size:9pt}.checklist input{appearance:none;border:1px solid #999;width:10pt;height:10pt}.checklist input:checked:after{content:"✓"}}