*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#080A0D;color:#C7CDD5;font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif}a{color:#8ED8FF;text-decoration:none}a:hover{text-decoration:underline;color:#6EA8FF}a:focus-visible,button:focus-visible{outline:3px solid #8ED8FF;outline-offset:4px}button{font:inherit;cursor:pointer}.container{width:min(1200px,calc(100% - 48px));margin:auto;min-width:0}h1,h2,h3{color:#F5F7FA;line-height:1.38;margin:0 0 16px}h1{font-size:34px;letter-spacing:-.02em}h2{font-size:24px}h3{font-size:19px}p{margin:0 0 16px}ul,ol{padding-left:1.4em}li{margin-bottom:8px}main{min-height:60vh}main .container{padding-top:28px;padding-bottom:65px}.skip-link{position:absolute;left:-1000px;top:0;z-index:80;background:#5C7CFA;color:#080A0D;padding:8px}.skip-link:focus{left:15px}.site-header{position:sticky;top:0;z-index:30;min-height:68px;background:rgba(8,10,13,.96);border-bottom:1px solid rgba(255,255,255,.09);backdrop-filter:blur(8px)}.header-inner{max-width:1248px;margin:auto;padding:0 24px;min-height:68px;display:flex;align-items:center;gap:22px}.brand{display:flex;align-items:center;flex-shrink:0;min-width:100px}.brand img{display:block;width:auto;max-width:110px;max-height:36px;object-fit:contain}.brand-word{color:#F5F7FA;font-weight:800;font-size:23px;letter-spacing:.02em}.brand-word span{font-weight:600;font-size:15px;color:#8ED8FF}.desktop-nav{display:flex;align-items:center;gap:clamp(10px,1.45vw,27px);white-space:nowrap;flex:1}.desktop-nav a{font-size:14px;color:#C7CDD5}.desktop-nav a.is-current,.desktop-nav a[aria-current]{color:#8ED8FF}.menu-trigger{display:flex;align-items:center;gap:8px;border:1px solid rgba(255,255,255,.16);color:#F5F7FA;background:#12161C;border-radius:9px;padding:7px 10px;font-size:14px;white-space:nowrap}.enter-link{padding:8px 16px;background:#5C7CFA;color:#F5F7FA;border-radius:8px;font-size:14px;white-space:nowrap;font-weight:700}.enter-link:hover{background:#6EA8FF;color:#080A0D;text-decoration:none}.menu-overlay{position:fixed;inset:0;background:rgba(0,0,0,.60);z-index:35}.menu-panel{position:fixed;z-index:40;top:76px;right:max(24px,calc((100vw - 1200px)/2));width:min(710px,calc(100vw - 48px));max-height:calc(100vh - 95px);max-height:calc(100dvh - 95px);overflow:auto;background:#12161C;border:1px solid rgba(255,255,255,.16);box-shadow:0 16px 45px #0009;border-radius:15px;padding:20px}.menu-panel[hidden],.menu-overlay[hidden]{display:none!important}.menu-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;color:#F5F7FA}.menu-close{border:1px solid rgba(255,255,255,.16);background:#171C23;color:#F5F7FA;border-radius:8px;width:42px;height:42px}.menu-group-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.menu-group-grid h2{font-size:15px;color:#8ED8FF}.menu-group-grid ul{list-style:none;margin:0;padding:0}.menu-group-grid li{margin:0 0 6px}.menu-group-grid a{font-size:14px;color:#C7CDD5}.all-link{display:inline-block;margin-top:15px}.breadcrumb{display:flex;gap:10px;flex-wrap:wrap;font-size:13px;color:#9098A3;margin:0 0 22px}.breadcrumb a{color:#9098A3}.page-intro{max-width:860px;margin:0 0 22px}.page-intro .lead{font-size:17px}.eyebrow{color:#8ED8FF;letter-spacing:.1em;font-size:12px;font-weight:700;text-transform:uppercase}.lead{color:#C7CDD5;font-size:17px;line-height:1.8}.section-neighbors{display:flex;flex-wrap:wrap;gap:9px;border-bottom:1px solid rgba(255,255,255,.09);padding-bottom:22px;margin-bottom:28px}.section-neighbors a{font-size:13px;color:#9098A3;background:#12161C;padding:5px 11px;border-radius:7px}.section-neighbors a.is-current{background:#222C45;color:#8ED8FF}.page-body{min-width:0}.page-body>.article-section{margin:0 0 42px}.page-body>.article-section>p,.page-body>.article-section>ol,.page-body>.article-section>ul{max-width:820px}.article-section h2{border-left:3px solid #5C7CFA;padding-left:13px}.article-section h3{font-size:19px}.card-grid,.three-col,.question-grid,.image-grid,.catalog-grid,.purpose-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.three-col,.image-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.content-card,.question-grid article,.purpose-grid article,.feature-main,.feature-side article,.focus-panel,.scenario-list article,.term-entry,.risk-steps,.faq-list article,.bookmark-list li{min-width:0;background:#0D1015;border:1px solid rgba(255,255,255,.09);border-radius:12px;padding:20px}.content-card p:last-child,.question-grid p:last-child{margin-bottom:0}.table-scroll{overflow-x:auto;border:1px solid rgba(255,255,255,.09);border-radius:12px;margin:16px 0 26px}table{border-collapse:collapse;width:100%;min-width:560px;font-size:15px}th,td{padding:12px 14px;border-bottom:1px solid rgba(255,255,255,.09);text-align:left;vertical-align:top}th{color:#F5F7FA;background:#171C23}tbody tr:nth-child(even){background:#0D1015}.numbered li{max-width:820px;margin-bottom:13px}.reading-links{margin:55px 0 20px;padding:22px;background:#12161C;border-top:2px solid #5C7CFA;border-radius:10px}.reading-links h2{font-size:19px}.reading-links ul{display:flex;flex-wrap:wrap;gap:10px 22px;margin:0}.reading-links li{margin:0}.media-natural{margin:18px 0 22px;display:grid;justify-items:center;min-width:0;padding:8px;border-radius:12px;background:#0D1015}.media-natural img{display:block;width:auto;height:auto;max-width:100%;max-height:var(--image-max-height,280px);object-fit:contain;object-position:center}.media-natural figcaption{font-size:13px;color:#9098A3;text-align:center;margin:7px 0 0}.missing-media{display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;min-height:118px;border-radius:12px;border:1px dashed rgba(255,255,255,.16);background:#0D1015;color:#9098A3;padding:16px;margin:16px 0}.missing-media span{font-size:14px}.missing-media small{font-size:12px}.masthead{display:grid;grid-template-columns:minmax(0,1fr) 190px;gap:36px;align-items:center;margin-bottom:26px}.masthead h1{font-size:38px}.topic-pills{display:grid;gap:12px}.topic-pills span{border-left:2px solid #5C7CFA;color:#F5F7FA;padding:10px 12px;background:#12161C;border-radius:4px}.layout-index>.media-natural{margin-bottom:40px}.question-grid article{border-top:2px solid #5C7CFA}.split-feature{display:grid;grid-template-columns:1.3fr 1fr;gap:18px}.feature-side{display:grid;gap:12px}.feature-side article{padding:14px 18px}.feature-side h3{font-size:17px;margin-bottom:5px}.feature-side p{font-size:14px;margin-bottom:5px}.image-grid figure{margin:0;min-width:0}.narrow-band{background:#171C23;border-left:3px solid #7775FF;padding:19px 20px;border-radius:6px}.inline-links,.purpose-grid article>div{display:flex;gap:12px;flex-wrap:wrap}.inline-links a,.purpose-grid article a{background:#171C23;border-radius:8px;padding:7px 12px}.term-note{float:right;max-width:260px;margin:0 0 20px 24px;background:#171C23;border:1px solid rgba(255,255,255,.09);padding:20px;border-radius:10px;font-size:14px}.scenario-list{display:grid;gap:14px;max-width:820px}.timeline{max-width:830px;list-style:none;padding:0;border-left:2px solid #5C7CFA;margin-left:8px}.timeline li{position:relative;padding:0 0 16px 22px}.timeline li:before{content:'';position:absolute;top:8px;left:-7px;width:12px;height:12px;border-radius:100%;background:#6EA8FF}.timeline h3{margin-bottom:7px}.focus-panel{max-width:820px}.interaction-strips{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.interaction-strips article{padding:18px;background:#0D1015;border-top:2px solid #5C7CFA}.interaction-strips span{color:#8ED8FF;font-size:13px}.local-index{display:flex;gap:13px;flex-wrap:wrap;padding:14px;background:#12161C;border-radius:9px;margin-bottom:28px}.glossary{margin-bottom:32px;max-width:840px}.term-entry{margin-bottom:12px}.term-entry h3{margin-bottom:4px}.term-entry p{margin-bottom:6px}.example-note{padding:14px 18px;border-left:3px solid #7775FF;background:#12161C}.catalog-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:15px}.catalog-grid figure{min-width:0;margin:0;border:1px solid rgba(255,255,255,.09);padding:7px;background:#12161C;border-radius:10px}.catalog-grid figcaption{font-size:13px;text-align:center}.catalog-grid figcaption span{display:block;color:#9098A3;font-size:12px}.catalog-grid .media-natural{margin:0}.bookmark-list{list-style:decimal;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;padding-left:28px}.bookmark-list li{padding:18px 22px}.mechanism{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px;max-width:780px}.mechanism>div{padding:18px;background:#171C23;border-top:3px solid #5C7CFA;text-align:center}.mechanism span{font-weight:700;color:#F5F7FA}.purpose-grid article h3{margin-bottom:8px}.map-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.map-columns section{padding:20px;background:#0D1015;border:1px solid rgba(255,255,255,.09);border-radius:10px}.map-columns ul{margin-bottom:0}.map-home{margin-top:18px}.editor-rules{max-width:820px}.editor-rules dt{font-weight:bold;color:#F5F7FA}.editor-rules dd{margin:0 0 18px}.faq-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.faq-list h3{font-size:17px;margin-bottom:7px}.faq-list p{margin-bottom:0}.site-footer{background:#050608;border-top:1px solid rgba(255,255,255,.09);padding:36px 0;color:#9098A3;font-size:14px}.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px 30px}.site-footer h2{font-size:17px}.site-footer strong{color:#F5F7FA;font-size:19px}.site-footer a{color:#C7CDD5}.foot-disclaimer{grid-column:1/-1;border-top:1px solid rgba(255,255,255,.09);padding-top:15px}.back-top{position:fixed;right:22px;bottom:25px;border:1px solid #5C7CFA;background:#171C23;color:#F5F7FA;width:44px;height:44px;border-radius:100%;z-index:20}.back-top[hidden]{display:none}blockquote{border-left:3px solid #7775FF;background:#12161C;margin:15px 0;padding:14px 18px;max-width:820px}
@media(max-width:1050px){.desktop-nav{gap:12px}.header-inner{gap:13px}.desktop-nav a{font-size:13px}.catalog-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:900px){.desktop-nav{display:none}.header-inner{justify-content:space-between}.brand{margin-right:auto}.menu-panel{top:auto;bottom:0;right:0;left:0;width:100%;max-height:85vh;max-height:85dvh;border-radius:16px 16px 0 0;padding-bottom:calc(20px + env(safe-area-inset-bottom))}.menu-group-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mobile-menu-open{overflow:hidden}.masthead{grid-template-columns:1fr}.topic-pills{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:650px){body{font-size:15px}.container{width:calc(100% - 32px)}.header-inner{padding:0 16px;gap:8px;min-height:66px}.site-header{min-height:66px}.brand{min-width:0}.brand img{max-width:96px;max-height:34px}.brand-word{font-size:21px}.brand-word span{font-size:13px}.menu-trigger{min-height:44px;padding:7px 9px}.enter-link{padding:10px 11px;font-size:13px}.masthead h1{font-size:29px}h1{font-size:27px}h2{font-size:21px}h3{font-size:17px}.lead,.page-intro .lead{font-size:15px}.masthead{gap:15px}.topic-pills{gap:6px}.topic-pills span{font-size:12px;padding:8px 6px}.page-body>.article-section{margin-bottom:30px}.card-grid,.three-col,.question-grid,.image-grid,.purpose-grid,.split-feature,.bookmark-list,.faq-list,.map-columns,.interaction-strips{grid-template-columns:minmax(0,1fr)}.catalog-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.menu-group-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.menu-panel{padding:16px}.menu-group-grid h2{font-size:14px}.menu-group-grid li{margin-bottom:8px}.term-note{float:none;max-width:100%;margin:15px 0}.mechanism{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.reading-links ul{display:block}.reading-links li{margin-bottom:6px}table{font-size:14px}.catalog-grid figure{padding:5px}}
@media(max-width:360px){.brand-word{font-size:19px}.enter-link{font-size:12px;padding:9px 7px}.menu-trigger{font-size:12px;padding:7px}.menu-group-grid{grid-template-columns:1fr 1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
