:root{--brand:#e8453c;--brand-dark:#c7342c;--brand-soft:#fdf0ef;--text:#212529;--muted:#5f6670;--line:#ebebeb;--bg:#f8f9fa;--radius:12px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.8;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-dark);text-decoration:none}
a:hover{text-decoration:underline}
.wp-wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.wp-skip{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:8px 16px;z-index:100}
.wp-skip:focus{left:0}
/* header */
.wp-site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:saturate(180%) blur(8px)}
.wp-header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.wp-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--text)}
.wp-logo:hover{text-decoration:none}
.wp-logo-mark{flex:none}
.wp-logo-text{display:flex;flex-direction:column;line-height:1.2}
.wp-logo-name{font-size:18px;font-weight:700}
.wp-logo-tag{font-size:12px;font-weight:400;color:var(--muted);letter-spacing:.5px;margin-top:2px}
.wp-site-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:4px}
.wp-site-nav a{display:block;padding:8px 12px;border-radius:8px;color:var(--text);font-size:15px}
.wp-site-nav a:hover{background:var(--brand-soft);color:var(--brand-dark);text-decoration:none}
.wp-site-nav a[aria-current=page]{color:var(--brand-dark);font-weight:600}
.wp-nav-toggle{position:absolute;opacity:0;pointer-events:none}
.wp-nav-btn{display:none;cursor:pointer;padding:10px}
.wp-nav-btn span{display:block;width:22px;height:2px;background:var(--text);margin:4px 0;border-radius:2px}
/* hero */
.wp-hero{background:linear-gradient(180deg,var(--brand-soft) 0%,#fff 100%);padding:28px 0 32px}
.wp-hero-home{padding:48px 0 40px}
.wp-hero h1{font-size:34px;line-height:1.35;margin:8px 0 8px;letter-spacing:.5px}
.wp-hero-home h1{font-size:40px}
.wp-lead{font-size:17px;color:#343a40;max-width:860px;margin:12px 0 0}
.wp-meta{color:var(--muted);font-size:14px;margin:0;display:flex;flex-wrap:wrap;gap:4px 16px}
.wp-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.wp-btn{display:inline-block;white-space:nowrap;cursor:pointer;background:var(--brand);color:#fff;padding:12px 26px;border-radius:999px;font-weight:600;font-size:16px;border:2px solid var(--brand);transition:background .2s}
.wp-btn:hover{background:var(--brand-dark);border-color:var(--brand-dark);text-decoration:none}
.wp-btn-ghost{background:#fff;color:var(--brand-dark)}
.wp-btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark)}
.wp-breadcrumb ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;font-size:14px;color:var(--muted)}
.wp-breadcrumb li+li::before{content:"/";margin:0 8px;color:#adb5bd}
.wp-breadcrumb a{color:var(--muted)}
/* banner (home) */
.wp-banner{position:relative;overflow:hidden;padding:56px 0 48px}
.wp-banner-inner{display:grid;gap:36px;align-items:center}
.wp-banner h1{font-size:46px;line-height:1.25;margin:0 0 12px;letter-spacing:.5px}
.wp-banner .wp-lead{font-size:18px}
.wp-banner-art img{width:100%;height:auto}
.wp-banner-chips{list-style:none;padding:0;margin:24px 0 0;display:flex;flex-wrap:wrap;gap:10px}
.wp-banner-chips a{display:inline-block;padding:7px 18px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--text);font-size:14px}
.wp-banner-chips a:hover{border-color:var(--brand);color:var(--brand-dark);text-decoration:none}
.wp-side-toc .wp-toc{border:0;padding:0}
/* content */
.wp-layout{padding:24px 20px 56px}
.wp-content{max-width:860px}
.wp-content h2{font-size:26px;line-height:1.4;margin:44px 0 14px;padding-left:12px;border-left:4px solid var(--brand)}
.wp-content h3{font-size:19px;margin:26px 0 8px}
.wp-content p{margin:0 0 14px}
.wp-content ul,.wp-content ol{padding-left:24px;margin:0 0 16px}
.wp-content li{margin:6px 0}
.wp-summary{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;margin:8px 0 24px}
.wp-summary-title,.wp-toc-title{font-weight:700;margin:0 0 6px}
.wp-summary ul{margin:0}
.wp-hero-figure{margin:0 0 24px}
.wp-hero-figure img{border-radius:var(--radius);border:1px solid var(--line)}
.wp-hero-figure figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.wp-toc{border:1px solid var(--line);border-radius:var(--radius);padding:16px 22px;margin:0 0 8px}
.wp-toc ol{margin:0;columns:2;column-gap:32px}
.wp-toc li{break-inside:avoid;font-size:15px}
.wp-steps{counter-reset:s;list-style:none;padding-left:0}
.wp-steps>li{counter-increment:s;position:relative;padding-left:42px;margin:12px 0}
.wp-steps>li::before{content:counter(s);position:absolute;left:0;top:2px;width:28px;height:28px;border-radius:50%;background:var(--brand);color:#fff;font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center}
.wp-table-wrap{overflow-x:auto;margin:0 0 16px;border:1px solid var(--line);border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;font-size:15px;min-width:560px}
caption{text-align:left;font-weight:600;padding:12px 16px;color:var(--muted);font-size:14px}
th,td{padding:12px 16px;border-top:1px solid var(--line);text-align:left;vertical-align:top}
thead th{background:var(--bg);font-weight:600}
.wp-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:0 0 16px}
.wp-card{display:block;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;color:var(--text);transition:border-color .2s,box-shadow .2s}
.wp-card:hover{border-color:var(--brand);box-shadow:0 4px 14px rgba(255,105,51,.12);text-decoration:none}
.wp-card strong{display:block;font-size:17px;color:var(--brand-dark)}
.wp-card span{font-size:14px;color:var(--muted)}
.wp-note{font-size:14px;color:var(--muted)}
pre{background:#1f2328;color:#f0f3f6;padding:14px 16px;border-radius:10px;overflow-x:auto;font-size:14px;line-height:1.6;margin:8px 0 14px}
code{font-family:Consolas,"SFMono-Regular",Menlo,monospace}
.wp-faq-item{border-bottom:1px solid var(--line);padding:6px 0 4px}
.wp-faq-item h3{margin:14px 0 6px;font-size:18px}
.wp-related{margin-top:48px;background:var(--bg);border-radius:var(--radius);padding:20px 24px}
.wp-related h2{border:0;padding:0;margin:0 0 8px;font-size:20px}
.wp-related ul{margin:0}
/* footer */
.wp-site-footer{background:#1f2328;color:#c9d1d9;padding:40px 0 24px;font-size:14px}
.wp-site-footer a{color:#c9d1d9}
.wp-site-footer a:hover{color:#fff}
.wp-footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
.wp-footer-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:#fff;margin:0 0 8px}
.wp-footer-title{color:#fff;font-weight:600;margin:0 0 8px}
.wp-site-footer ul{list-style:none;margin:0;padding:0}
.wp-site-footer li{margin:4px 0}
.wp-footer-note{border-top:1px solid #30363d;margin-top:28px;padding-top:16px;color:#8b949e;font-size:13px}
.wp-footer-note p{margin:0 0 6px}
/* responsive */
@media (max-width:960px){
.wp-nav-btn{display:block}
.wp-site-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 8px 16px rgba(0,0,0,.06)}
.wp-site-nav ul{flex-direction:column;padding:8px 12px}
.wp-nav-toggle:checked~.wp-site-nav{display:block}
}
@media (max-width:640px){
.wp-banner h1{font-size:30px}
.wp-banner .wp-lead{font-size:16px}
.wp-banner{padding:36px 0 28px}
.wp-hero h1,.wp-hero-home h1{font-size:26px}
.wp-lead{font-size:16px}
.wp-content h2{font-size:22px}
.wp-toc ol{columns:1}
.wp-cards{grid-template-columns:1fr 1fr}
.wp-footer-grid{grid-template-columns:1fr 1fr}
.wp-footer-about{grid-column:1/-1}
}

/* 骨架 split：左文右图大横幅、方角按钮、卡片网格、右侧固定目录、白色页脚 */
.wp-site-header{background:#fff}
.wp-site-nav a{border-radius:0;padding:20px 12px}
.wp-site-nav a:hover{background:none;color:var(--brand)}
.wp-site-nav a[aria-current=page]{box-shadow:inset 0 -3px 0 var(--brand);color:var(--brand)}
.wp-banner{background:linear-gradient(115deg,#fff 0%,#fff 42%,var(--brand-soft) 100%);padding:72px 0 64px;border-bottom:1px solid var(--line)}
.wp-banner-inner{grid-template-columns:1.05fr 1fr}
.wp-banner h1{font-size:52px;font-weight:800}
.wp-banner .wp-lead{color:#495057}
.wp-btn{border-radius:6px;padding:14px 30px;box-shadow:0 6px 16px rgba(0,0,0,.08)}
.wp-btn-ghost{box-shadow:none}
.wp-hero{background:#fff;border-bottom:1px solid var(--line);padding:36px 0 32px}
.wp-hero h1{font-size:36px}
.wp-layout-side{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:56px;max-width:1180px}
.wp-layout-side .wp-content{max-width:none}
.wp-side-toc{position:sticky;top:84px;align-self:start;margin-top:8px;border-left:2px solid var(--line);padding-left:18px;font-size:14px;max-height:calc(100vh - 110px);overflow:auto}
.wp-side-toc .wp-toc ol{columns:1;list-style:none;padding:0;margin:0}
.wp-side-toc .wp-toc li{margin:0 0 8px}
.wp-side-toc .wp-toc a{color:#495057}
.wp-side-toc .wp-toc a:hover{color:var(--brand)}
.wp-cards{grid-template-columns:repeat(3,1fr);gap:16px}
.wp-card{position:relative;padding:20px 18px 18px 64px;border-radius:8px;background:#fff;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.wp-card::before{content:"";position:absolute;left:18px;top:20px;width:32px;height:32px;border-radius:8px;background:var(--brand-soft);border:2px solid var(--brand)}
.wp-card strong{color:var(--text)}
.wp-content h2{font-size:25px;border-left-width:5px}
.wp-summary{background:var(--brand-soft);border:0;border-radius:8px}
.wp-site-footer{background:#fff;color:#6c757d;border-top:1px solid var(--line)}
.wp-site-footer a{color:#495057}
.wp-site-footer a:hover{color:var(--brand)}
.wp-footer-logo,.wp-footer-title{color:#212529}
.wp-footer-note{border-top-color:var(--line);color:#868e96}
@media (max-width:960px){
.wp-banner-inner{grid-template-columns:1fr}
.wp-layout-side{grid-template-columns:minmax(0,1fr);gap:0}
.wp-side-toc{display:none}
.wp-site-nav a{padding:10px 12px}
.wp-site-nav a[aria-current=page]{box-shadow:inset 3px 0 0 var(--brand)}
}
@media (max-width:640px){
.wp-banner h1{font-size:32px}
.wp-cards{grid-template-columns:1fr}
}