:root{--bg:#F6FAFC;--surface:#fff;--wash:#EAF6FA;--wash2:#EDF4F8;--cyan:#25C8D1;--sky:#25B6E8;--blue:#1787DB;--deep:#174B78;--heading:#183A56;--text:#31485D;--muted:#687D8E;--line:#DCE9F0;--footer:#123653;--radius:16px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:32px}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:clip}a{color:var(--deep);text-decoration-thickness:1px;text-underline-offset:4px}a:hover{color:#0878af}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}button{font:inherit;cursor:pointer}img{display:block;max-width:100%}.shell{width:min(1180px,calc(100% - 56px));margin-inline:auto}.reading{max-width:780px}h1,h2,h3{color:var(--heading);line-height:1.36;letter-spacing:-.015em}h1{font-size:clamp(32px,3.3vw,42px);margin:0 0 20px}h2{font-size:clamp(24px,2.3vw,27px);margin:0 0 20px}h3{font-size:20px;margin:0 0 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p{max-width:590px}.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.button{border-radius:9px;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;padding:11px 21px;font-weight:700;font-size:14px}.button--primary{background:var(--deep);color:#fff}.button--primary:hover{background:#0c80b7;color:#fff}.button--outline{border:1px solid #98c2d6;background:#fff}.media{display:flex;justify-content:center;align-items:center;width:100%;min-width:0;overflow:hidden;border-radius:14px;background:var(--wash)}.media img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center}.media--logo{height:38px;width:auto;max-width:210px;min-width:70px;border-radius:0;background:transparent}.media--logo img{max-height:38px}.media--logo.media--placeholder{width:44px;min-width:44px;border-radius:6px}.media--hero{height:clamp(250px,26vw,330px)}.media--feature{height:250px}.media--card{height:170px}.media--banner{height:220px}.media--mobile{height:350px;max-width:320px}.media--portrait{max-width:320px;margin-inline:auto}.media--wide{background:#f0f9fc}.media--placeholder{background:linear-gradient(135deg,#eaf6fa,#dfecf2)}.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.topic{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:22px;min-width:0;text-decoration:none;display:flex;flex-direction:column;gap:10px}.topic:hover,.related__link:hover{border-color:#82c8d9;transform:translateY(-2px)}.topic strong{font-size:18px;color:var(--heading)}.topic span{font-size:14px;line-height:1.65;color:var(--text)}.topic em{font-size:12px;color:#087f9f;font-style:normal;margin-top:auto}.editorial{display:grid;grid-template-columns:2fr 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@media(max-height:470px) and (max-width:640px){.mobile-bottom{position:static}.site-footer{padding-bottom:35px}.back-to-top{bottom:20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}