/*
Theme Name: ChatGPT 中文百科 Pro
Theme URI: https://example.com/chatgpt-cn-guide-pro
Author: ChatGPT 中文百科 Pro
Description: 面向 ChatGPT 中文镜像站、国内版入口、Gemini、Claude、Grok 教程与 AI 模型动态网站的轻量响应式 WordPress 主题。
Version: 2.0.0
Requires at least: 6.2
Tested up to: 6.8
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: chatgpt-cn-guide-pro
Tags: blog, education, news, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready, wide-blocks
*/

:root{
 --p:#2563eb;--prgb:37,99,235;--a:#14b8a6;--bg:#f6f8fc;--s:#fff;--s2:#eef4ff;
 --t:#182033;--m:#667085;--line:#e5e9f2;--ok:#12b76a;--warn:#f79009;--bad:#f04438;
 --r:18px;--rl:28px;--shadow:0 14px 38px rgba(16,24,40,.09);--container:1180px;--content:780px;--header:72px
}
html[data-theme=dark]{--bg:#0d111b;--s:#141a27;--s2:#1b2333;--t:#f2f4f7;--m:#a7b0c0;--line:#293245;--shadow:0 18px 50px rgba(0,0,0,.3)}
@media(prefers-color-scheme:dark){html[data-theme=auto]{--bg:#0d111b;--s:#141a27;--s2:#1b2333;--t:#f2f4f7;--m:#a7b0c0;--line:#293245}}
*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}
body{margin:0;background:var(--bg);color:var(--t);font:16px/1.75 Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;-webkit-font-smoothing:antialiased}
body.menu-open,body.search-open{overflow:hidden}img,svg,video,iframe{max-width:100%}img{height:auto}a{color:var(--p);text-decoration:none}a:hover{text-decoration:underline}
button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer}input,textarea,select{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:11px;background:var(--s);outline:0}
input:focus,textarea:focus,select:focus{border-color:var(--p);box-shadow:0 0 0 4px rgba(var(--prgb),.12)}textarea{min-height:150px}
h1,h2,h3,h4{margin:0 0 .65em;line-height:1.27;letter-spacing:-.025em}h1{font-size:clamp(2.1rem,5vw,4rem)}h2{font-size:clamp(1.6rem,3vw,2.35rem)}h3{font-size:clamp(1.16rem,2vw,1.5rem)}
p,ul,ol,blockquote,pre,table{margin-top:0;margin-bottom:1.3em}code,pre{font-family:Consolas,Monaco,monospace}code{padding:.12em .35em;border:1px solid var(--line);border-radius:6px;background:var(--s2)}
pre{overflow:auto;padding:18px;border-radius:var(--r);background:#101828;color:#e6edf7}blockquote{margin-left:0;padding:18px 20px;border-left:4px solid var(--p);background:var(--s2);color:var(--m)}
table{width:100%;border-collapse:collapse;background:var(--s)}th,td{padding:12px;border:1px solid var(--line);text-align:left}th{background:var(--s2)}
.screen-reader-text{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(1px,1px,1px,1px)}
.screen-reader-text:focus{z-index:99999;top:8px;left:8px;width:auto;height:auto;padding:12px 16px;clip:auto;background:var(--s);color:var(--t);border-radius:8px}
.container{width:min(calc(100% - 40px),var(--container));margin-inline:auto}.narrow{width:min(calc(100% - 40px),var(--content));margin-inline:auto}
.section{padding:clamp(58px,8vw,96px) 0}.section.tight{padding:42px 0}.surface{background:var(--s)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}.section-head p,.muted{color:var(--m)}.section-head p{margin:0}
.eyebrow{display:inline-flex;align-items:center;gap:7px;margin-bottom:10px;color:var(--p);font-size:.78rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border:1px solid rgba(var(--prgb),.18);border-radius:999px;background:rgba(var(--prgb),.08);color:var(--p);font-size:.76rem;font-weight:750}
.icon{width:1.2em;height:1.2em;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.button,input[type=submit]{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 18px;border:1px solid transparent;border-radius:12px;background:var(--p);color:#fff;font-weight:750;text-decoration:none;box-shadow:0 9px 22px rgba(var(--prgb),.2)}
.button:hover{color:#fff;text-decoration:none;transform:translateY(-1px)}.button.secondary{border-color:var(--line);background:var(--s);color:var(--t);box-shadow:none}.button.small{min-height:38px;padding:8px 13px;font-size:.86rem}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;padding:0;border:1px solid var(--line);border-radius:12px;background:var(--s);color:var(--t)}
.announcement{padding:7px 0;background:linear-gradient(90deg,var(--p),var(--a));color:#fff;text-align:center;font-size:.85rem}.announcement a{color:#fff;font-weight:700}
.progress{position:fixed;z-index:1200;top:0;left:0;width:100%;height:3px}.progress span{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--p),var(--a))}
.site-header{position:sticky;z-index:1000;top:0;height:var(--header);border-bottom:1px solid transparent;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(16px)}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 8px 25px rgba(16,24,40,.05)}.admin-bar .site-header{top:32px}
.header-inner{display:flex;align-items:center;height:100%;gap:24px}.branding{margin-right:auto}.brand-link{display:flex;align-items:center;gap:10px;color:var(--t);font-weight:820}.brand-link:hover{text-decoration:none}
.brand-mark{display:grid;place-items:center;width:39px;height:39px;border-radius:12px;background:linear-gradient(145deg,var(--p),var(--a));color:#fff}.custom-logo{max-width:180px;max-height:46px;width:auto}
.primary-nav ul{display:flex;align-items:center;gap:4px;margin:0;padding:0;list-style:none}.primary-nav li{position:relative}.primary-nav a{display:flex;align-items:center;padding:9px 11px;border-radius:10px;color:var(--m);font-size:.92rem;font-weight:650}
.primary-nav a:hover,.primary-nav .current-menu-item>a{background:var(--s2);color:var(--t);text-decoration:none}.primary-nav .sub-menu{position:absolute;top:100%;left:0;display:none;min-width:210px;padding:8px;border:1px solid var(--line);border-radius:14px;background:var(--s);box-shadow:var(--shadow)}
.primary-nav li:hover>.sub-menu,.primary-nav li:focus-within>.sub-menu{display:block}.actions{display:flex;gap:7px}.menu-toggle{display:none}
.search-layer{position:fixed;z-index:1100;inset:0;display:grid;place-items:start center;padding:12vh 20px;background:rgba(5,9,17,.58);backdrop-filter:blur(8px)}.search-layer[hidden]{display:none}
.search-panel{width:min(100%,700px);padding:22px;border:1px solid var(--line);border-radius:var(--rl);background:var(--s);box-shadow:0 30px 80px rgba(0,0,0,.3)}.search-panel-head{display:flex;align-items:center;justify-content:space-between}
.search-form{display:flex;gap:10px}.search-form label{flex:1}
.hero{position:relative;overflow:hidden;padding:clamp(64px,9vw,110px) 0}.hero:before{position:absolute;inset:0;content:"";background:radial-gradient(circle at 12% 10%,rgba(var(--prgb),.15),transparent 35%),radial-gradient(circle at 90% 85%,rgba(20,184,166,.12),transparent 35%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:70px}.hero h1{margin:18px 0;font-size:clamp(2.35rem,5.6vw,4.6rem);letter-spacing:-.055em}.gradient{color:var(--p)}
.hero-copy>p{max-width:720px;color:var(--m);font-size:1.08rem}.hero-actions{display:flex;flex-wrap:wrap;gap:11px;margin:25px 0}.trust{display:flex;flex-wrap:wrap;gap:15px;margin:0;padding:0;color:var(--m);font-size:.84rem;list-style:none}.trust .icon{color:var(--ok)}
.hero-panel{padding:22px;border:1px solid var(--line);border-radius:var(--rl);background:var(--s);box-shadow:var(--shadow)}.panel-top{display:flex;justify-content:space-between;margin-bottom:14px}.panel-top h2{font-size:1rem}
.quick-links{display:grid;gap:9px}.quick-link{display:grid;grid-template-columns:42px 1fr auto;align-items:center;gap:12px;padding:12px;border-radius:14px;color:var(--t)}.quick-link:hover{background:var(--s2);text-decoration:none}
.quick-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:rgba(var(--prgb),.1);color:var(--p)}.quick-link strong,.quick-link small{display:block}.quick-link small{color:var(--m);font-size:.75rem}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature{padding:24px;border:1px solid var(--line);border-radius:var(--r);background:var(--s)}.feature-icon{display:grid;place-items:center;width:46px;height:46px;margin-bottom:15px;border-radius:14px;background:rgba(var(--prgb),.1);color:var(--p)}.feature h3{font-size:1.06rem}.feature p{margin:0;color:var(--m);font-size:.9rem}
.content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.card{position:relative;overflow:hidden;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r);background:var(--s);box-shadow:0 2px 10px rgba(16,24,40,.05);transition:.18s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.card-media{position:relative;display:block;aspect-ratio:16/9;background:linear-gradient(145deg,var(--p),var(--a))}.card-media img{width:100%;height:100%;object-fit:cover}.placeholder{position:absolute;inset:0;display:grid;place-items:center;color:#fff}.placeholder .icon{width:50px;height:50px}
.card-body{display:flex;flex:1;flex-direction:column;padding:19px}.card-meta{display:flex;justify-content:space-between;gap:10px;margin-bottom:9px;color:var(--m);font-size:.75rem}.card h3{font-size:1.1rem}.card h3 a{color:var(--t)}.card h3 a:after{position:absolute;inset:0;content:""}.card p{color:var(--m);font-size:.88rem}.card-foot{display:flex;justify-content:space-between;margin-top:auto;padding-top:13px;border-top:1px solid var(--line);color:var(--m);font-size:.76rem}
.topic-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}.topic{display:flex;min-height:125px;flex-direction:column;justify-content:space-between;padding:17px;border:1px solid var(--line);border-radius:var(--r);background:var(--s);color:var(--t)}.topic:hover{border-color:var(--p);background:rgba(var(--prgb),.05);text-decoration:none}.topic small{display:block;color:var(--m)}
.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.tool{position:relative;display:flex;flex-direction:column;padding:20px;border:1px solid var(--line);border-radius:var(--r);background:var(--s);transition:.18s}.tool:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.tool-top{display:flex;justify-content:space-between;margin-bottom:15px}.tool-logo{display:grid;overflow:hidden;place-items:center;width:52px;height:52px;border-radius:15px;background:rgba(var(--prgb),.1);color:var(--p)}.tool-logo img{width:100%;height:100%;object-fit:cover}.tool h3{font-size:1.02rem}.tool h3 a{color:var(--t)}.tool h3 a:after{position:absolute;inset:0;content:""}.tool p{color:var(--m);font-size:.84rem}.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto}.chips span{padding:4px 8px;border-radius:999px;background:var(--s2);color:var(--m);font-size:.68rem}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}.step{padding:22px;border:1px solid var(--line);border-radius:var(--r);background:var(--s);counter-increment:step}.step:before{display:grid;place-items:center;width:34px;height:34px;margin-bottom:16px;border-radius:10px;background:rgba(var(--prgb),.1);color:var(--p);content:counter(step,decimal-leading-zero);font-weight:800}.step h3{font-size:1rem}.step p{margin:0;color:var(--m);font-size:.84rem}
.editorial{display:grid;grid-template-columns:1fr auto;align-items:center;gap:28px;padding:38px;border:1px solid var(--line);border-radius:var(--rl);background:var(--s)}.editorial p{margin:0;color:var(--m)}
.faq{display:grid;gap:10px;max-width:880px;margin:auto}.faq-item{border:1px solid var(--line);border-radius:15px;background:var(--s)}.faq-q{display:flex;justify-content:space-between;width:100%;padding:17px 19px;border:0;background:transparent;text-align:left;font-weight:730}.faq-a{padding:0 19px 17px;color:var(--m)}.faq-a[hidden]{display:none}
.breadcrumbs{padding-top:16px;color:var(--m);font-size:.78rem}.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:7px;margin:0;padding:0;list-style:none}.breadcrumbs li:not(:last-child):after{margin-left:7px;content:"/"}
.page-hero{padding:58px 0 34px;border-bottom:1px solid var(--line);background:var(--s)}.page-hero h1{font-size:clamp(2rem,4vw,3.3rem)}.page-hero p{max-width:780px;margin:0;color:var(--m)}
.blog-layout{display:grid;grid-template-columns:1fr 310px;align-items:start;gap:34px}.posts{display:grid;gap:20px}.list-card{position:relative;display:grid;grid-template-columns:230px 1fr;overflow:hidden;border:1px solid var(--line);border-radius:var(--r);background:var(--s)}.list-media{position:relative;min-height:180px;background:linear-gradient(145deg,var(--p),var(--a))}.list-media img{width:100%;height:100%;object-fit:cover}.list-body{padding:20px}.list-body h2{font-size:1.25rem}.list-body h2 a{color:var(--t)}.list-body h2 a:after{position:absolute;inset:0;content:""}.list-body p{color:var(--m);font-size:.88rem}
.post-meta{display:flex;flex-wrap:wrap;gap:8px 16px;color:var(--m);font-size:.78rem}.post-meta span,.post-meta a{display:inline-flex;align-items:center;gap:5px;color:inherit}
.sidebar{display:grid;gap:18px}.widget{padding:20px;border:1px solid var(--line);border-radius:var(--r);background:var(--s)}.widget-title{font-size:1rem}.widget ul{display:grid;gap:8px;margin:0;padding:0;list-style:none}.widget li{font-size:.86rem}
.article{padding:25px 0 90px}.article-head{max-width:900px;margin:20px auto 34px;text-align:center}.article-head h1{margin:14px 0;font-size:clamp(2rem,4.7vw,3.65rem)}.article-head p{color:var(--m)}.article-head .post-meta{justify-content:center}
.featured{overflow:hidden;max-width:1080px;margin:0 auto 38px;border-radius:var(--rl);box-shadow:var(--shadow)}.featured img{display:block;width:100%;max-height:620px;object-fit:cover}
.article-layout{display:grid;grid-template-columns:minmax(0,var(--content)) 260px;justify-content:center;align-items:start;gap:48px}.entry-content{font-size:1.02rem}.entry-content h2{margin-top:2em;font-size:1.7rem}.entry-content h3{margin-top:1.6em;font-size:1.3rem}.entry-content img{border-radius:12px}
.article-side{position:sticky;top:100px;display:grid;gap:15px}.toc,.side-card{padding:17px;border:1px solid var(--line);border-radius:15px;background:var(--s)}.toc-title,.side-card h3{font-size:.86rem;font-weight:800}.toc-list,.toc-list ol{display:grid;gap:5px;margin:0;padding:0;list-style:none}.toc-list ol{margin-left:12px}.toc-list a{color:var(--m);font-size:.76rem}.toc-list a.active{color:var(--p)}
.article-foot{margin-top:38px;padding-top:22px;border-top:1px solid var(--line)}.share{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:20px}.tags a{padding:5px 10px;border:1px solid var(--line);border-radius:999px;color:var(--m);font-size:.74rem}
.author-box{display:grid;grid-template-columns:58px 1fr;gap:15px;margin-top:30px;padding:20px;border:1px solid var(--line);border-radius:var(--r);background:var(--s)}.author-box img{border-radius:50%}.author-box p{margin:0;color:var(--m);font-size:.84rem}
.post-navigation{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:28px}.post-navigation a{display:block;padding:16px;border:1px solid var(--line);border-radius:14px;background:var(--s);color:var(--t)}.post-navigation .nav-next{text-align:right}.meta-nav{display:block;color:var(--m);font-size:.7rem}
.page-wrap{padding:42px 0 90px}.page-box{padding:clamp(24px,4vw,44px);border:1px solid var(--line);border-radius:var(--rl);background:var(--s)}.page-box .entry-content{max-width:var(--content);margin:auto}.full .entry-content{max-width:none}
.tool-filter{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}.tool-filter a{padding:7px 12px;border:1px solid var(--line);border-radius:999px;background:var(--s);color:var(--m)}.tool-filter a.active{border-color:var(--p);color:var(--p)}
.tool-detail{display:grid;grid-template-columns:90px 1fr auto;align-items:center;gap:22px;margin:20px 0 30px;padding:26px;border:1px solid var(--line);border-radius:var(--rl);background:var(--s)}.tool-detail .tool-logo{width:90px;height:90px}.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.fact{padding:15px;border:1px solid var(--line);border-radius:13px;background:var(--s)}.fact dt{color:var(--m);font-size:.7rem}.fact dd{margin:0;font-weight:720}
.contact-layout{display:grid;grid-template-columns:1fr 360px;gap:28px}.contact-card,.contact-form{padding:32px;border:1px solid var(--line);border-radius:var(--rl);background:var(--s)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{margin-bottom:15px}.field label{display:block;margin-bottom:5px;font-size:.82rem;font-weight:700}.status{padding:12px;border-radius:10px}.status.ok{background:rgba(18,183,106,.1);color:var(--ok)}.status.bad{background:rgba(240,68,56,.1);color:var(--bad)}.honeypot{position:absolute;left:-9999px}
.sitemap-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.sitemap-box{padding:22px;border:1px solid var(--line);border-radius:var(--r);background:var(--s)}
.empty{max-width:720px;margin:auto;padding:80px 20px;text-align:center}.empty-icon{display:grid;place-items:center;width:76px;height:76px;margin:0 auto 18px;border-radius:24px;background:rgba(var(--prgb),.1);color:var(--p)}
.nav-links{display:flex;flex-wrap:wrap;justify-content:center;gap:7px;margin-top:32px}.page-numbers{display:grid;place-items:center;min-width:40px;height:40px;padding:0 10px;border:1px solid var(--line);border-radius:10px;background:var(--s);color:var(--m)}.page-numbers.current,.page-numbers:hover{background:var(--p);color:#fff}
.comments-area{margin-top:45px;padding-top:32px;border-top:1px solid var(--line)}.comment-list{padding:0;list-style:none}.comment-body{margin-bottom:14px;padding:18px;border:1px solid var(--line);border-radius:14px;background:var(--s)}
.footer-cta{padding:0 0 58px}.footer-cta-inner{display:grid;grid-template-columns:1fr auto;align-items:center;gap:25px;padding:42px;border-radius:var(--rl);background:linear-gradient(120deg,var(--p),var(--a));color:#fff}.footer-cta h2{color:#fff}.footer-cta p{margin:0;color:rgba(255,255,255,.8)}.footer-cta .button{background:#fff;color:#182033}
.site-footer{border-top:1px solid var(--line);background:var(--s)}.footer-main{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:45px;padding:55px 0 38px}.footer-brand p{color:var(--m);font-size:.85rem}.footer-menu{display:grid;gap:8px;margin:0;padding:0;list-style:none}.footer-menu a{color:var(--m);font-size:.84rem}.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:18px 0 25px;border-top:1px solid var(--line);color:var(--m);font-size:.74rem}.footer-bottom p{margin:0}
.back-top{position:fixed;z-index:900;right:20px;bottom:20px;visibility:hidden;opacity:0}.back-top.visible{visibility:visible;opacity:1}.reveal{opacity:0;transform:translateY(14px);transition:.45s}.reveal.visible{opacity:1;transform:none}
.alignleft{float:left;margin:0 1.5em 1em 0}.alignright{float:right;margin:0 0 1em 1.5em}.aligncenter{display:block;margin:auto}.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
@media(max-width:1100px){.primary-nav{position:fixed;z-index:1050;top:var(--header);right:0;bottom:0;visibility:hidden;width:min(86vw,360px);padding:18px;background:var(--s);box-shadow:-20px 0 50px rgba(0,0,0,.15);opacity:0;transform:translateX(100%);transition:.2s}.primary-nav.open{visibility:visible;opacity:1;transform:none}.primary-nav ul{display:grid}.primary-nav .sub-menu{position:static;display:grid;margin-left:12px;box-shadow:none}.menu-toggle{display:inline-flex}.topic-grid{grid-template-columns:repeat(3,1fr)}.tool-grid{grid-template-columns:repeat(2,1fr)}.content-grid{grid-template-columns:repeat(2,1fr)}.article-layout{grid-template-columns:minmax(0,var(--content))}.article-side{position:static;grid-row:1}.toc{display:none}}
@media(max-width:900px){.hero-inner,.blog-layout,.contact-layout{grid-template-columns:1fr}.feature-grid,.steps{grid-template-columns:repeat(2,1fr)}.footer-main{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.tool-detail{grid-template-columns:76px 1fr}.tool-actions{grid-column:1/-1}}
@media(max-width:680px){:root{--header:64px}.container,.narrow{width:min(calc(100% - 28px),var(--container))}.brand-text{max-width:145px}.theme-toggle{display:none}.hero-inner{display:block}.hero-copy{margin-bottom:32px}.hero-actions{display:grid}.feature-grid,.content-grid,.tool-grid,.steps,.footer-main,.footer-cta-inner,.facts,.sitemap-grid{grid-template-columns:1fr}.topic-grid{grid-template-columns:repeat(2,1fr)}.section-head,.footer-bottom{align-items:flex-start;flex-direction:column}.editorial{display:block}.editorial .button{margin-top:20px}.list-card{grid-template-columns:1fr}.list-media{aspect-ratio:16/9}.article-head{text-align:left}.article-head .post-meta{justify-content:flex-start}.post-navigation,.form-row{grid-template-columns:1fr}.post-navigation .nav-next{text-align:left}.tool-detail{grid-template-columns:64px 1fr;padding:20px}.tool-detail .tool-logo{width:64px;height:64px}.search-form{display:grid}}
@media(max-width:420px){.topic-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important}.reveal{opacity:1;transform:none}}
@media print{.announcement,.site-header,.article-side,.footer-cta,.site-footer,.back-top,.progress,.share,.comments-area{display:none!important}.article-layout{display:block}}


/* ==========================================================
   ChatGPT 中文百科 Pro V2 homepage
   ========================================================== */
.brand-stack{display:grid;line-height:1.08}
.brand-stack strong{max-width:210px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.94rem}
.brand-stack small{margin-top:4px;color:var(--m);font-size:.62rem;font-weight:650;letter-spacing:.08em}
.brand-mark span{font-size:.78rem;font-weight:900;letter-spacing:-.04em}
.footer-title{font-size:.9rem}
.footer-cta-label{display:block;margin-bottom:10px;color:rgba(255,255,255,.76);font-size:.72rem;font-weight:800;letter-spacing:.12em}

.cn-hero{position:relative;overflow:hidden;padding:clamp(58px,8vw,96px) 0 50px}
.cn-hero:before{position:absolute;inset:0;content:"";background:
 radial-gradient(circle at 8% 12%,rgba(var(--prgb),.14),transparent 32%),
 radial-gradient(circle at 92% 78%,rgba(20,184,166,.12),transparent 30%),
 linear-gradient(180deg,color-mix(in srgb,var(--bg) 92%,#fff),var(--bg))}
.cn-hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(390px,.72fr);align-items:center;gap:clamp(40px,6vw,78px)}
.cn-kicker{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border:1px solid rgba(var(--prgb),.16);border-radius:999px;background:var(--s);color:var(--p);font-size:.78rem;font-weight:800;box-shadow:0 8px 25px rgba(16,24,40,.04)}
.cn-hero-copy h1{max-width:820px;margin:20px 0 18px;font-size:clamp(2.35rem,5.2vw,4.45rem);letter-spacing:-.055em}
.cn-hero-lead{max-width:760px;color:var(--m);font-size:clamp(1rem,1.4vw,1.12rem);line-height:1.9}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 18px;color:var(--m);font-size:.82rem}
.hero-points span{display:inline-flex;align-items:center;gap:6px}
.hero-points .icon{color:var(--ok)}

.entry-board{padding:24px;border:1px solid color-mix(in srgb,var(--line) 80%,var(--p));border-radius:26px;background:color-mix(in srgb,var(--s) 94%,transparent);box-shadow:0 25px 70px rgba(16,24,40,.12);backdrop-filter:blur(16px)}
.entry-board-head{display:flex;align-items:flex-start;justify-content:space-between;gap:15px;margin-bottom:14px}
.entry-board-head h2{margin:0;font-size:1.12rem}
.live-dot{display:inline-flex;align-items:center;gap:6px;color:var(--ok);font-size:.7rem;font-weight:750}
.live-dot:before{width:7px;height:7px;border-radius:50%;background:var(--ok);content:"";box-shadow:0 0 0 4px rgba(18,183,106,.12)}
.entry-board-list{display:grid;gap:8px}
.entry-row{display:grid;grid-template-columns:42px 1fr auto;align-items:center;gap:12px;padding:12px;border:1px solid transparent;border-radius:14px;color:var(--t);transition:.18s}
.entry-row:hover{border-color:var(--line);background:var(--s2);text-decoration:none;transform:translateX(3px)}
.model-letter{display:grid;place-items:center;width:42px;height:42px;flex:0 0 auto;border:1px solid rgba(var(--prgb),.15);border-radius:13px;background:linear-gradient(145deg,rgba(var(--prgb),.13),rgba(20,184,166,.12));color:var(--p);font-size:.75rem;font-weight:900}
.model-letter.large{width:54px;height:54px;border-radius:17px;font-size:.9rem}
.entry-row-copy{display:grid}
.entry-row-copy strong{font-size:.9rem}
.entry-row-copy small{margin-top:2px;color:var(--m);font-size:.7rem}
.entry-arrow{color:var(--m)}
.entry-note{display:flex;align-items:flex-start;gap:7px;margin:15px 0 0;padding-top:14px;border-top:1px solid var(--line);color:var(--m);font-size:.68rem;line-height:1.65}
.entry-note .icon{flex:0 0 auto;margin-top:2px;color:var(--ok)}

.home-intro-strip{border-block:1px solid var(--line);background:var(--s)}
.intro-strip-grid{display:grid;grid-template-columns:repeat(3,1fr)}
.intro-strip-grid>div{display:grid;gap:2px;padding:20px 24px;border-right:1px solid var(--line)}
.intro-strip-grid>div:last-child{border-right:0}
.intro-strip-grid strong{font-size:.88rem}
.intro-strip-grid span{color:var(--m);font-size:.72rem}

.text-link,.read-more{display:inline-flex;align-items:center;gap:7px;color:var(--p);font-size:.86rem;font-weight:780}
.text-link:hover,.read-more:hover{text-decoration:none;gap:10px}

.model-guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.model-guide-card{display:flex;min-height:320px;flex-direction:column;padding:24px;border:1px solid var(--line);border-radius:20px;background:var(--s);box-shadow:0 4px 16px rgba(16,24,40,.04);transition:.2s}
.model-guide-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.model-guide-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.model-index{color:var(--line);font-size:1.4rem;font-weight:900}
.model-guide-card h3{margin-bottom:4px}
.model-guide-card>p{color:var(--m);font-size:.84rem}
.model-guide-card .model-subtitle{margin-bottom:12px;color:var(--t);font-size:.78rem;font-weight:750}
.model-links{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}
.model-links a{display:inline-flex;align-items:center;gap:5px;font-size:.74rem;font-weight:760}
.model-links a:first-child{color:var(--t)}

.latest-home{border-block:1px solid var(--line)}
.latest-layout{display:grid;grid-template-columns:minmax(0,1.13fr) minmax(360px,.87fr);gap:24px}
.latest-feature{overflow:hidden;border:1px solid var(--line);border-radius:24px;background:var(--s);box-shadow:0 7px 25px rgba(16,24,40,.06)}
.latest-feature-media{position:relative;display:block;aspect-ratio:16/8.7;background:linear-gradient(135deg,var(--p),var(--a))}
.latest-feature-media img{width:100%;height:100%;object-fit:cover}
.latest-placeholder{position:absolute;inset:0;display:grid;place-items:center;color:#fff}
.latest-placeholder span{position:absolute;top:20px;left:20px;padding:5px 9px;border:1px solid rgba(255,255,255,.35);border-radius:999px;background:rgba(255,255,255,.12);font-size:.68rem;font-weight:850;letter-spacing:.1em}
.latest-placeholder .icon{width:64px;height:64px}
.latest-feature-body{padding:25px}
.latest-feature-body h3{font-size:clamp(1.35rem,2.2vw,1.85rem)}
.latest-feature-body h3 a{color:var(--t)}
.latest-feature-body p{color:var(--m)}
.latest-list{display:grid;gap:10px}
.latest-list-item{position:relative;padding:18px 20px;border:1px solid var(--line);border-radius:17px;background:var(--s);transition:.18s}
.latest-list-item:hover{border-color:rgba(var(--prgb),.3);transform:translateX(3px)}
.latest-list-meta{display:flex;justify-content:space-between;gap:12px;margin-bottom:5px;color:var(--m);font-size:.68rem}
.latest-list-meta span{color:var(--p);font-weight:750}
.latest-list-item h3{margin-bottom:5px;font-size:1rem}
.latest-list-item h3 a{color:var(--t)}
.latest-list-item h3 a:after{position:absolute;inset:0;content:""}
.latest-list-item p{margin:0;color:var(--m);font-size:.76rem}
.demo-latest .latest-feature-media{min-height:250px}

.topic-directory{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.topic-directory-item{display:grid;grid-template-columns:46px 1fr auto;align-items:center;gap:15px;padding:18px;border:1px solid var(--line);border-radius:17px;background:var(--s);color:var(--t);box-shadow:0 3px 12px rgba(16,24,40,.035);transition:.18s}
.topic-directory-item:hover{border-color:rgba(var(--prgb),.28);text-decoration:none;transform:translateY(-2px);box-shadow:var(--shadow)}
.topic-directory-copy{display:grid}
.topic-directory-copy strong{font-size:.91rem}
.topic-directory-copy small{margin-top:3px;color:var(--m);font-size:.72rem;line-height:1.55}
.topic-count{padding:5px 9px;border-radius:999px;background:var(--s2);color:var(--m);font-size:.66rem;white-space:nowrap}

.comparison-section{border-block:1px solid var(--line)}
.comparison-table-wrap{overflow:auto;border:1px solid var(--line);border-radius:20px;background:var(--s)}
.comparison-table{width:100%;min-width:780px;margin:0;border-collapse:collapse}
.comparison-table th,.comparison-table td{padding:17px 20px;border-bottom:1px solid var(--line);text-align:left;font-size:.82rem}
.comparison-table thead th{background:var(--s2);color:var(--m);font-size:.7rem;letter-spacing:.04em}
.comparison-table tbody th{font-size:.9rem}
.comparison-table tbody tr:last-child th,.comparison-table tbody tr:last-child td{border-bottom:0}

.home-guide-layout{display:grid;grid-template-columns:300px minmax(0,760px);justify-content:center;gap:60px}
.home-guide-side{position:sticky;top:110px;align-self:start;padding:24px;border:1px solid var(--line);border-radius:20px;background:var(--s)}
.home-guide-side h2{font-size:1.35rem}
.home-guide-side p{color:var(--m);font-size:.8rem}
.home-guide-side nav{display:grid;gap:2px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}
.home-guide-side nav a{padding:8px 9px;border-radius:9px;color:var(--m);font-size:.74rem}
.home-guide-side nav a:hover{background:var(--s2);color:var(--p);text-decoration:none}
.home-guide-content{max-width:none}
.home-guide-content h2{scroll-margin-top:110px;margin-top:1.8em}
.home-guide-content h2:first-child{margin-top:0}
.home-guide-content p{color:color-mix(in srgb,var(--t) 83%,var(--m));font-size:1rem;line-height:2}

.section-head.centered{justify-content:center;text-align:center}
.section-head.centered p{max-width:620px;margin-inline:auto}
.faq-section{border-top:1px solid var(--line)}

@media(max-width:1100px){
 .cn-hero-grid{grid-template-columns:1fr .78fr;gap:38px}
 .model-guide-grid{grid-template-columns:repeat(2,1fr)}
 .home-guide-layout{grid-template-columns:250px minmax(0,1fr);gap:35px}
}
@media(max-width:900px){
 .cn-hero-grid,.latest-layout,.home-guide-layout{grid-template-columns:1fr}
 .entry-board{max-width:700px}
 .home-guide-side{position:static}
 .home-guide-side nav{grid-template-columns:repeat(2,1fr)}
 .intro-strip-grid{grid-template-columns:1fr}
 .intro-strip-grid>div{border-right:0;border-bottom:1px solid var(--line)}
 .intro-strip-grid>div:last-child{border-bottom:0}
}
@media(max-width:680px){
 .cn-hero{padding-top:42px}
 .cn-hero-copy h1{font-size:clamp(2rem,11vw,3rem)}
 .entry-board{padding:17px;border-radius:20px}
 .entry-row{grid-template-columns:40px 1fr auto;padding:10px 7px}
 .model-guide-grid,.topic-directory{grid-template-columns:1fr}
 .model-guide-card{min-height:280px}
 .latest-feature-body{padding:20px}
 .home-guide-side nav{grid-template-columns:1fr}
 .topic-directory-item{grid-template-columns:42px 1fr}
 .topic-count{grid-column:2}
}