/* PG电子 / editorial dark-blue responsive reading system */
:root{color-scheme:dark;--bg:#080A0D;--surface:#0D1015;--panel:#12161C;--panel2:#171C23;--text:#F5F7FA;--body:#C7CDD5;--sub:#9098A3;--blue:#5C7CFA;--bright:#6EA8FF;--border:rgba(255,255,255,.09)}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--body);font:16px/1.82 Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-wrap:break-word}a{color:var(--bright);text-decoration:none}a:hover{text-decoration:underline;color:#8ED8FF}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid #8ED8FF;outline-offset:4px}button{font:inherit;cursor:pointer}.wrap{width:min(100% - 48px,1200px);margin-inline:auto;min-width:0}h1,h2,h3{color:var(--text);line-height:1.36;margin:0 0 18px}h1{font-size:34px;letter-spacing:-.025em}h2{font-size:26px}h3{font-size:19px}p{margin:0 0 17px}figure{margin:0}img{display:block;max-width:100%;width:100%;height:auto;object-fit:contain;object-position:center}ul,ol{padding-left:22px}.eyebrow{display:block;font:700 12px/1.4 Arial,sans-serif;letter-spacing:.13em;color:var(--bright);text-transform:uppercase;margin-bottom:14px}.site-header{background:rgba(8,10,13,.96);border-bottom:1px solid var(--border);position:relative;z-index:20}.nav-shell{height:76px;display:flex;align-items:center;gap:20px}.brand{display:flex;align-items:center;gap:10px;flex:0 0 218px;min-width:0;text-decoration:none}.brand .media-frame{padding:0;border:0;background:none;min-height:0;width:auto}.brand img{max-height:36px;max-width:125px;width:auto}.brand-fallback{color:#f5f7fa;font-weight:750;font-size:16px;white-space:nowrap}.brand-fallback small{display:block;font-size:9px;color:var(--sub);letter-spacing:.055em}.desktop-nav{display:flex;justify-content:center;align-items:center;gap:20px;flex:1;white-space:nowrap;min-width:0}.desktop-nav a{font-size:14px;color:#c7cdd5;position:relative;line-height:75px}.desktop-nav a.active{color:var(--bright)}.desktop-nav a.active:after{position:absolute;content:"";height:2px;bottom:-1px;left:0;right:0;background:var(--bright)}.enter-btn{flex:none;padding:0 20px;height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;color:white;background:var(--blue);font-weight:700;font-size:14px;white-space:nowrap}.enter-btn:hover{background:#7390ff;color:white;text-decoration:none}.menu-toggle{display:none;align-items:center;justify-content:center;flex-direction:column;gap:5px;background:transparent;border:1px solid var(--border);border-radius:9px;width:40px;height:40px}.menu-toggle span{height:2px;width:19px;background:#e4eafa;border-radius:2px}.topic-bar{background:#10141A;border-bottom:1px solid var(--border)}.topic-track{height:45px;display:flex;align-items:center}.desktop-topics{display:flex;gap:28px;align-items:center;white-space:nowrap}.desktop-topics a{font-size:13px;color:#bbc4d1}.mobile-topics{display:none}.drawer-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.68);z-index:40;visibility:hidden;pointer-events:none;opacity:0;transition:opacity .2s,visibility .2s}.site-drawer{position:fixed;top:0;bottom:0;left:0;max-width:390px;width:min(86vw,340px);padding:18px 22px 35px;background:var(--surface);z-index:41;overflow-y:auto;visibility:hidden;pointer-events:none;transform:translateX(-100%);transition:transform .23s,visibility .23s;box-shadow:15px 0 45px rgba(0,0,0,.35)}.drawer-backdrop.is-open{visibility:visible;pointer-events:auto;opacity:1}.site-drawer.is-open{visibility:visible;pointer-events:auto;transform:translateX(0)}.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;padding-bottom:15px;border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:10px;font-weight:700}.drawer-brand .media-frame,.footer-brand .media-frame{border:0;background:none;padding:0;min-height:0;width:auto}.drawer-brand img{width:auto;max-height:30px;max-width:90px}.drawer-top button{color:white;background:transparent;border:1px solid var(--border);border-radius:8px;font-size:25px;width:36px;height:36px;line-height:1}.drawer-group{margin:0 0 23px}.drawer-group h2{font-size:13px;color:var(--sub);padding-bottom:9px;border-bottom:1px solid var(--border);letter-spacing:.08em}.drawer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 10px}.drawer-links a{display:block;padding:7px 0;color:var(--body);font-size:14px}.main-content{padding-top:28px;padding-bottom:80px}.breadcrumbs{display:flex;align-items:center;gap:10px;color:var(--sub);font-size:13px;margin-bottom:33px}.breadcrumbs a{color:var(--sub)}.page-lead{border-bottom:1px solid var(--border);padding:8px 0 27px;margin-bottom:36px;max-width:960px}.page-lead h1{font-size:34px}.lead{font-size:17px;line-height:1.85;max-width:850px}.article-layout{display:grid;grid-template-columns:minmax(0,790px) minmax(210px,1fr);gap:55px;align-items:start}.reading-column,.reading-sidebar{min-width:0}.article-section{padding:0 0 24px;margin-bottom:26px;border-bottom:1px solid var(--border)}.article-section h2{border-left:3px solid var(--bright);padding-left:15px;margin-bottom:21px}.article-section p{line-height:1.86}.local-toc,.sidebar-note{border:1px solid var(--border);border-radius:13px;background:var(--surface);padding:23px;margin-bottom:20px}.local-toc{position:sticky;top:18px}.local-toc ol{padding-left:19px;margin:0}.local-toc li{margin:8px 0;font-size:13px;line-height:1.6}.local-toc a{color:#cbd3de}.sidebar-note p{font-size:14px;margin:0}.related-section{border-top:1px solid var(--border);margin-top:48px;padding-top:29px}.related-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;list-style:none;padding:0}.related-links li{background:var(--surface);padding:18px;border:1px solid var(--border);border-radius:12px}.related-links a{display:block;font-weight:700}.related-links span{display:block;color:var(--sub);font-size:13px}.media-frame{width:100%;min-width:0;max-width:100%;display:flex;align-items:center;justify-content:center;background:var(--surface);border:1px solid var(--border);border-radius:13px;padding:8px;overflow:hidden}.media-frame img{display:block;width:100%;height:auto;max-width:100%;object-fit:contain;object-position:center center}.media-standard img{max-height:180px}.media-feature img{max-height:245px}.media-hero img{max-height:245px}.media-device{max-width:270px;margin:auto}.media-device img{max-height:340px;width:auto}.media-gif img{max-height:175px}.media-missing{min-height:135px}.media-hero.media-missing{min-height:220px}.media-device.media-missing{min-height:300px}.placeholder-mark{width:45px;height:34px;display:block;border:1px solid #283544;border-radius:6px;opacity:.55;position:relative}.placeholder-mark:after{content:"";position:absolute;left:8px;bottom:7px;width:24px;height:11px;border-left:1px solid #536579;border-top:1px solid #536579;transform:rotate(35deg)}.feature-figure,.inline-figure{margin:0 0 28px}.feature-figure figcaption,.inline-figure figcaption{font-size:12px;color:var(--sub);margin-top:9px}.inline-figure{max-width:650px}.home-hero{display:grid;grid-template-columns:52% minmax(0,48%);gap:0;min-height:300px;align-items:center;border-bottom:1px solid var(--border);padding:18px 0 40px}.hero-copy{padding-right:40px;min-width:0}.hero-copy h1{font-size:41px;line-height:1.36}.hero-copy p{font-size:16px}.hero-art{min-width:0}.inline-actions{display:flex;gap:20px;flex-wrap:wrap;margin-top:18px}.inline-actions a{font-weight:700;border-bottom:1px solid #526f9a;padding-bottom:3px}.home-section{margin-top:58px}.section-heading{margin-bottom:25px}.route-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--border);border:1px solid var(--border);border-radius:13px;overflow:hidden}.route-item{display:flex;gap:16px;padding:24px;background:var(--panel);min-width:0}.route-item p{font-size:15px;margin:0}.route-item h3{margin-bottom:9px}.entry-number{color:var(--bright);font:700 15px/1.3 Arial,sans-serif;white-space:nowrap;letter-spacing:.04em}.split-section{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(240px,.8fr);gap:65px}.editorial-main{max-width:750px}.numbered-aside{border-top:2px solid var(--bright);padding-top:22px}.numbered-aside h3{font-size:16px}.numbered-aside li{padding:12px 0;border-bottom:1px solid var(--border)}.numbered-aside p{border-bottom:1px solid var(--border);padding-bottom:12px}.two-editorials{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:60px}.two-editorials article{border-top:1px solid #536278;padding-top:20px}.two-editorials p{font-size:15px}.visual-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.visual-card{min-width:0;border:1px solid var(--border);padding:12px;background:var(--panel);border-radius:12px}.visual-card figcaption{padding:12px 2px 3px}.visual-card figcaption strong,.note-item strong,.wall-item strong{display:block;color:var(--text);font-size:16px;margin-bottom:6px}.visual-card figcaption span,.note-item figcaption span,.wall-item figcaption span{display:block;font-size:13px;line-height:1.8;color:var(--sub)}.feature-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:48px;align-items:center}.probability-section{border:1px solid var(--border);border-radius:14px;padding:28px;background:var(--surface)}.notes-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:13px}.note-item{min-width:0}.note-item figcaption{padding:10px 5px}.reference-shelf{border-top:1px solid var(--border)}.shelf-entry{display:grid;grid-template-columns:42px 1fr;gap:14px;padding:17px 0;border-bottom:1px solid var(--border);max-width:900px}.shelf-entry h3{margin:0 0 6px}.shelf-entry p{font-size:14px;margin:0}.mobile-feature{display:grid;grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:60px;align-items:center}.public-band{border-top:2px solid var(--bright);padding-top:29px;max-width:940px}.editorial-index{max-width:990px}.index-entry{display:grid;grid-template-columns:50px minmax(0,1fr);gap:24px;padding:24px 0;border-bottom:1px solid var(--border)}.index-entry h2{font-size:22px}.index-entry p{font-size:15px}.text-link{font-size:14px!important;font-weight:700}.category-map{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.category-block{display:flex;gap:18px;padding:24px;border:1px solid var(--border);background:var(--surface);border-radius:13px}.category-block p{font-size:14px}.category-block ul{display:flex;flex-wrap:wrap;gap:6px 16px;list-style:none;padding:0;margin:0}.category-block li{font-size:14px}.faq-list{max-width:890px}.faq-item{background:var(--panel);border:1px solid var(--border);margin-bottom:12px;border-radius:11px;padding:0 22px}.faq-item summary{cursor:pointer;padding:16px 0;color:var(--text);font-weight:700}.faq-item p{font-size:15px;padding-bottom:15px;margin:0}.visual-group{margin-top:35px}.gallery-explain{max-width:850px}.gallery-wall{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.wall-item{min-width:0;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:14px}.wall-item figcaption{padding:12px 4px 2px}.wall-1,.wall-5{grid-column:span 2}.site-footer{background:#050608;border-top:1px solid var(--border);padding-top:45px}.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:65px;padding-bottom:40px}.footer-about{max-width:330px}.footer-about p{font-size:14px;color:var(--sub)}.footer-brand{display:flex;gap:10px;align-items:center;margin-bottom:16px}.footer-brand img{max-height:32px;max-width:100px;width:auto}.footer-english{font-size:11px;color:var(--sub);letter-spacing:.07em}.footer-grid h2{font-size:16px;margin:0 0 15px}.footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:5px 12px}.footer-links a{font-size:13px;color:var(--sub)}.footer-bottom{border-top:1px solid var(--border);padding:20px 0 30px;display:flex;gap:24px;justify-content:space-between;font-size:12px;color:var(--sub)}.back-top{position:fixed;right:22px;bottom:20px;width:42px;height:42px;border-radius:50%;border:1px solid #56657a;background:#151e2c;color:white;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s;z-index:19}.back-top.visible{opacity:1;visibility:visible;pointer-events:auto}
@media(max-width:1150px){.desktop-nav{gap:12px}.brand{flex-basis:190px}.desktop-nav a{font-size:13px}}
@media(max-width:979px){.wrap{width:min(100% - 40px,1200px)}.nav-shell{height:64px;position:relative;justify-content:space-between}.menu-toggle{display:flex;flex:none}.brand{position:absolute;left:50%;transform:translateX(-50%);flex:none;width:auto;justify-content:center;max-width:140px}.brand .media-frame img{max-height:28px;max-width:72px}.brand-fallback{font-size:13px}.brand-fallback small{display:none}.desktop-nav{display:none}.enter-btn{height:40px;padding:0 13px;font-size:12px}.desktop-topics{display:none}.topic-track{height:43px;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:none}.topic-track::-webkit-scrollbar{display:none}.mobile-topics{display:flex;gap:24px;white-space:nowrap;align-items:center}.mobile-topics a{font-size:13px;color:var(--body);flex:none}.article-layout{grid-template-columns:minmax(0,1fr)}.reading-sidebar{display:none}.footer-grid{gap:30px}.home-hero{grid-template-columns:52% minmax(0,48%)}.hero-copy h1{font-size:35px}}
@media(max-width:767px){.article-layout{display:block}.wrap{width:calc(100% - 32px)}.main-content{padding-top:20px;padding-bottom:52px}.breadcrumbs{margin-bottom:18px;flex-wrap:wrap}.page-lead{margin-bottom:27px}.page-lead h1{font-size:26px}.lead{font-size:15px}.article-section h2,.home-section h2{font-size:21px}.article-section p{font-size:15px}.home-hero{display:flex;flex-direction:column-reverse;align-items:stretch;gap:22px;padding-top:5px}.hero-copy{padding-right:0}.hero-copy h1{font-size:30px}.hero-copy p{font-size:15px}.home-section{margin-top:34px}.route-grid,.two-editorials,.split-section,.feature-split,.mobile-feature,.category-map{grid-template-columns:minmax(0,1fr)}.route-item{padding:17px}.two-editorials,.split-section,.feature-split,.mobile-feature{gap:24px}.visual-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.notes-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.related-links{grid-template-columns:minmax(0,1fr)}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-about{grid-column:span 2}.footer-bottom{display:block}.footer-bottom span{display:block;margin:0 0 8px}.gallery-wall{gap:12px}.media-standard img{max-height:155px}.media-feature img{max-height:185px}.media-hero img{max-height:145px}.media-device{max-width:220px}.media-device img{max-height:340px}.media-gif img{max-height:145px}.probability-section{padding:18px}.category-block{padding:17px}.site-drawer{padding-inline:17px}.index-entry{grid-template-columns:35px minmax(0,1fr);gap:10px}}
@media(max-width:374px){.brand{max-width:78px}.brand-fallback{font-size:11px}.brand .media-frame img{max-width:60px}.enter-btn{padding:0 10px;font-size:11px}.visual-grid{grid-template-columns:minmax(0,1fr)}.footer-links{grid-template-columns:1fr}.notes-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.route-item{gap:12px}.hero-copy h1{font-size:28px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}