:root{color-scheme:light;--ink:#071327;--muted:#62708a;--line:#d8e3f3;--soft:#f4f8ff;--brand:#1264ff;--brand-strong:#0c48c8;--cyan:#14bfd1;--panel:#fff;--shadow:0 22px 60px rgba(18,44,86,.12)}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:linear-gradient(180deg,#f7fbff 0,#fff 460px);line-height:1.6}
a{color:inherit;text-decoration:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.hc-shell{width:min(1180px,calc(100% - 40px));margin:0 auto}
.hc-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px max(24px,calc((100vw - 1180px)/2));background:rgba(255,255,255,.88);border-bottom:1px solid var(--line);backdrop-filter:blur(18px)}
.hc-brand{display:inline-flex;align-items:center}
.hc-brand img{display:block;height:auto}
.hc-nav{display:flex;align-items:center;gap:6px;padding:6px;border:1px solid var(--line);border-radius:999px;background:#fff}
.hc-nav a{padding:10px 16px;border-radius:999px;color:#31405c;font-weight:750;font-size:14px}
.hc-nav a:hover,.hc-nav a:focus-visible{background:#eef5ff;color:var(--brand)}
.hc-login{padding:12px 18px;border-radius:14px;background:var(--brand);color:#fff;font-weight:850;box-shadow:0 16px 36px rgba(18,100,255,.22)}
.hc-hero{padding:76px 0 34px;border-bottom:1px solid #edf3fb;background:linear-gradient(120deg,rgba(18,100,255,.08),rgba(20,191,209,.08) 50%,rgba(255,255,255,0))}
.hc-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:52px;align-items:center}
.hc-kicker{margin:0 0 14px;color:var(--brand);font-size:13px;text-transform:uppercase;letter-spacing:.12em;font-weight:900}
.hc-hero h1{margin:0;font-size:clamp(46px,6vw,82px);line-height:.98;letter-spacing:0}
.hc-lead{max-width:760px;margin:24px 0 0;color:#51617c;font-size:20px}
.hc-search{position:relative;margin-top:34px;max-width:760px}
.hc-search input{width:100%;height:68px;border:1px solid #bed0eb;border-radius:20px;background:#fff;padding:0 24px;font:inherit;font-size:18px;color:var(--ink);box-shadow:var(--shadow);outline:none}
.hc-search input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(18,100,255,.12),var(--shadow)}
.hc-search span{display:block;margin-top:10px;color:var(--muted);font-size:14px}
.hc-assist{padding:28px;border:1px solid var(--line);border-radius:24px;background:rgba(255,255,255,.86);box-shadow:var(--shadow)}
.hc-assist b,.hc-panel b{display:block;margin-bottom:8px;font-size:18px}
.hc-assist p{margin:0 0 20px;color:var(--muted)}
.hc-assist a,.hc-panel a{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 0;border-top:1px solid #e6eef9;color:#15355d;font-weight:800}
.hc-assist a:after,.hc-panel a:after{content:"›";color:var(--brand);font-size:22px;line-height:1}
.hc-shortcuts{display:flex;flex-wrap:wrap;gap:10px;padding:28px 0}
.hc-shortcuts a{padding:10px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#31405c;font-size:14px;font-weight:850}
.hc-shortcuts a:hover,.hc-shortcuts a:focus-visible{border-color:#a9c2ee;color:var(--brand);background:#f3f8ff}
.hc-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:34px;padding:24px 0 70px;align-items:start}
.hc-main{display:grid;gap:34px}
.hc-block{padding:32px;border:1px solid var(--line);border-radius:26px;background:#fff;box-shadow:0 18px 50px rgba(18,44,86,.08)}
.hc-section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:22px}
.hc-section-head p{margin:0;color:var(--brand);font-size:12px;text-transform:uppercase;letter-spacing:.12em;font-weight:900}
.hc-section-head h2{margin:4px 0 0;font-size:28px;line-height:1.1;letter-spacing:0}
.hc-popular{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.hc-popular-item{display:grid;grid-template-columns:42px minmax(0,1fr);gap:12px;padding:18px;border:1px solid #e1ebf8;border-radius:18px;background:#fbfdff;min-height:118px}
.hc-popular-item span{width:34px;height:34px;border-radius:12px;background:#eaf3ff;color:var(--brand);display:grid;place-items:center;font-weight:900;font-size:13px}
.hc-popular-item b{display:block;font-size:16px;line-height:1.3}
.hc-popular-item small{display:block;margin-top:5px;color:var(--muted);font-size:13px;line-height:1.45}
.hc-popular-item:hover,.hc-popular-item:focus-visible,.hc-category:hover,.hc-category:focus-within{border-color:#a9c2ee;box-shadow:0 18px 38px rgba(18,100,255,.1)}
.hc-category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.hc-category{padding:22px;border:1px solid #e1ebf8;border-radius:20px;background:#fbfdff;min-height:220px}
.hc-category h3{margin:0;font-size:20px;letter-spacing:0}
.hc-category p{min-height:72px;margin:10px 0 14px;color:var(--muted)}
.hc-category a{display:block;padding:9px 0;border-top:1px solid #edf3fb;color:#15355d;font-weight:800;font-size:14px}
.hc-articles{display:grid;gap:10px}
.hc-article{border:1px solid #e1ebf8;border-radius:16px;background:#fbfdff;overflow:hidden}
.hc-article summary{cursor:pointer;padding:18px 20px;font-weight:850;color:#10213d}
.hc-article[open] summary{border-bottom:1px solid #e1ebf8;background:#f4f8ff}
.hc-article p{margin:0;padding:16px 20px;color:#53637d}
.hc-side{position:sticky;top:96px;display:grid;gap:16px}
.hc-panel{padding:22px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:0 16px 44px rgba(18,44,86,.08)}
.hc-footer{border-top:1px solid var(--line);background:#fff}
.hc-footer .hc-shell{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:26px 0;color:#52617c}
.hc-footer span{font-weight:900;color:#10213d}
.hc-footer nav{display:flex;gap:18px;flex-wrap:wrap}
.hc-footer a{font-weight:800}
.is-hidden{display:none!important}
.hc-empty{display:none;padding:18px;border:1px solid #ffd6a5;border-radius:18px;background:#fff8ef;color:#7a4a12;font-weight:800}
.hc-empty.is-visible{display:block}
@media(max-width:980px){.hc-header{position:relative;align-items:flex-start;flex-wrap:wrap}.hc-nav{order:3;width:100%;overflow:auto;justify-content:flex-start}.hc-hero-grid,.hc-layout{grid-template-columns:1fr}.hc-side{position:static}.hc-category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.hc-shell{width:min(100% - 28px,1180px)}.hc-header{padding:14px}.hc-brand img{width:130px}.hc-login{padding:10px 14px}.hc-hero{padding:46px 0 24px}.hc-hero h1{font-size:44px}.hc-lead{font-size:17px}.hc-search input{height:60px;font-size:16px;border-radius:16px}.hc-block{padding:22px;border-radius:20px}.hc-section-head{display:block}.hc-popular,.hc-category-grid{grid-template-columns:1fr}.hc-footer .hc-shell{align-items:flex-start;flex-direction:column}}