*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:176px}body{margin:0;background:#f5f7fa;color:#1b2d42;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.6}button,input{font:inherit}button{cursor:pointer}a{color:inherit}button,a,input{-webkit-tap-highlight-color:transparent}header{height:80px;position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;padding:0 40px;background:#fff;border-bottom:1px solid #e1e7ee}.brand{display:flex;align-items:center;gap:14px;text-decoration:none;font-size:20px;font-weight:700}.book-icon{display:grid;place-items:center;width:42px;height:42px;background:#15364f;border-radius:10px;color:white;font-family:Georgia,serif;font-size:20px}.languages{display:flex;background:#edf1f5;padding:4px;border-radius:9px;gap:3px}.languages button{border:0;background:none;color:#506174;padding:7px 16px;border-radius:6px;font-size:14px}.languages 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.catalog-brand{display:flex;align-items:center;gap:24px}.shelf-link{font-size:14px;text-decoration:none;color:#5e7587;border-right:1px solid #dde4eb;padding-right:24px}.shelf-link:hover{color:#176a76}@media(max-width:560px){.catalog-brand{gap:12px}.shelf-link{font-size:13px;padding-right:12px}.catalog-brand .book-icon{display:none}.catalog-brand .brand{font-size:15px}header{gap:10px}.catalog-brand{min-width:0}.catalog-brand .brand span{line-height:1.25}.languages{flex-shrink:0}}
.catalog-brand{min-width:0}
.catalog-brand .shelf-link{flex-shrink:0}
.catalog-brand .brand{min-width:0}
.catalog-brand .book-icon{flex-shrink:0}
.catalog-brand-copy{display:flex;align-items:baseline;flex-wrap:wrap;gap:3px 18px;min-width:0}
.catalog-studio{font-size:15px;font-weight:400;line-height:1.6;color:#536b78}
header{gap:20px}
header .languages{flex-shrink:0}
@media(max-width:800px){
  header{height:112px;display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:auto auto;gap:8px 12px;padding:10px 16px}
  .catalog-brand{display:contents}
  .catalog-brand .shelf-link{grid-column:1;grid-row:1;justify-self:start;border-right:0;padding-right:0}
  header .languages{grid-column:2;grid-row:1}
  .catalog-brand .brand{grid-column:1 / -1;grid-row:2}
  .catalog-brand-copy{gap:3px 12px}
  .catalog-studio{font-size:12px}
  .toolbar{top:112px}
  html{scroll-padding-top:244px}
}

.quick-links{display:flex;flex-wrap:wrap;gap:8px 22px}.quick-links .quick-link{white-space:nowrap}