/* 官网文章与案例页：独立基础布局，不能依赖其他页面的内嵌样式。 */
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f7faff;color:#182640;font:16px/1.75 "Microsoft YaHei",Arial,sans-serif}a{color:inherit;text-decoration:none}.shell{width:min(1440px,calc(100% - 96px));margin:auto}.subnav{background:#fff;border-bottom:1px solid #d9e5f7}.nav{min-height:82px;display:flex;align-items:center;justify-content:space-between;border:0}.brand{display:inline-flex;align-items:center;gap:10px;font-size:20px;font-weight:700;letter-spacing:.04em}.brand img{width:40px;height:40px;object-fit:contain}.brand-copy small{display:block;color:#697a94;font-size:10px;letter-spacing:.16em;font-weight:400}.links{display:flex;align-items:center;gap:18px;color:#405d72}.links a{position:relative;padding:8px 0;font-size:15px}.links a:hover,.links a[aria-current="page"]{color:#315de0}.links a[aria-current="page"]:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:3px;background:linear-gradient(100deg,#1769e8,#6735b5)}.links .contact-nav{padding:8px 16px;border:1px solid #315de0;border-radius:6px;color:#315de0;font-weight:700}.links .contact-nav:hover,.links .contact-nav[aria-current="page"]{background:linear-gradient(100deg,#1769e8,#6735b5);color:#fff}.links .contact-nav[aria-current="page"]:after{display:none}.site-footer{background:#182640;color:#fff;padding:60px 0 28px}.footer-grid{display:grid;grid-template-columns:1.45fr .8fr 1fr;gap:70px}.footer-eyebrow{display:block;margin-bottom:16px;color:#9fb5ff;font-size:12px;font-weight:700;letter-spacing:.16em}.site-footer h3{margin:0 0 16px;font-size:17px}.site-footer p,.site-footer a,.footer-contact-line{color:#d9e3f3;font-size:16px}.footer-links{display:grid;gap:10px}.footer-links a{width:max-content;max-width:100%}.footer-bottom{margin-top:48px;padding-top:20px;border-top:1px solid #ffffff2b;text-align:center}.footer-bottom a{color:#b8c7dc}
/* 图片必须与正文事实边界一一对应。 */
.content-hero{padding:72px 0 56px;background:linear-gradient(135deg,#edf7ff,#f6f4ff)}
.content-hero .eyebrow{color:#1768c9;font-weight:700;letter-spacing:.08em;font-size:13px}
.content-hero h1{max-width:900px;margin:14px 0 18px;font-size:clamp(34px,5vw,58px);line-height:1.25;color:#102c4a}
.content-hero .summary{max-width:760px;font-size:18px;line-height:1.75;color:#49647b}
.content-layout{max-width:920px;margin:0 auto;padding:56px 24px 72px}
.content-layout p,.content-layout li{font-size:17px;line-height:1.9;color:#344d61}
.content-layout h2{margin:46px 0 14px;color:#102c4a;font-size:28px}.content-layout h3{margin:26px 0 8px;color:#183b5b}
.content-layout figure{margin:34px 0}.content-layout figure img{display:block;width:100%;max-height:560px;object-fit:cover;border-radius:12px}
.content-layout figcaption{margin-top:9px;color:#64758a;font-size:14px}.content-layout .note{margin:28px 0;padding:18px 20px;border-left:4px solid #327ee6;background:#edf6ff;color:#294b69;line-height:1.75}
.content-layout .related{margin-top:54px;padding:28px;background:#f3f8ff;border-radius:12px}.content-layout .related a{color:#126bd1;font-weight:700;text-decoration:none}
.content-layout .image-pair{display:grid;grid-template-columns:1fr 1fr;gap:20px}.content-layout .image-pair img{height:300px}
@media(max-width:760px){.shell{width:calc(100% - 40px)}.nav{min-height:72px;flex-wrap:wrap;gap:8px;padding:12px 0}.links{order:3;width:100%;overflow-x:auto;white-space:nowrap;padding-bottom:4px}.links a{flex:none;font-size:14px}.content-hero{padding:48px 0 38px}.content-layout{padding:38px 20px 56px}.content-layout p,.content-layout li{font-size:16px}.content-layout .image-pair{grid-template-columns:1fr}.content-layout .image-pair img{height:auto}.footer-grid{grid-template-columns:1fr;gap:28px}.site-footer{padding:42px 0 78px}}

/* Match the compact shared footer used by the rest of the site. */
.site-footer{padding:36px 0 24px}.footer-grid{grid-template-columns:minmax(260px,.9fr) minmax(390px,1.4fr) minmax(245px,.85fr);grid-template-areas:"brand navigation contact";gap:40px;align-items:start}.footer-brand{grid-area:brand;max-width:380px;padding:0;border:0}.footer-grid>div:nth-child(2){grid-area:navigation}.footer-grid>div:nth-child(3){grid-area:contact}.footer-eyebrow{display:none}.site-footer h3{margin:0 0 8px;font-size:15px;line-height:1.4}.footer-brand h3{font-size:17px}.site-footer p{margin:0 0 9px;line-height:1.6}.footer-links{display:flex;flex-wrap:wrap;gap:7px 20px}.footer-links a{width:auto}.footer-contact-line{display:inline-block;margin:0 20px 0 0}.footer-grid>div:nth-child(3) .footer-links{display:inline-flex;margin-left:4px}.footer-bottom{margin-top:22px;padding-top:14px}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr;grid-template-areas:"brand" "navigation" "contact";gap:22px}.footer-brand{max-width:none;padding:0 0 18px;border-right:0;border-bottom:1px solid #ffffff24}.site-footer{padding:34px 0 76px}.footer-bottom{margin-top:24px}}