.basics-home{padding:30px 0 65px}.basics-kicker{font-size:12px;font-weight:700;letter-spacing:.13em;color:var(--blue);margin:0 0 15px}.basics-hero{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;background:#edf3ff;border:1px solid #d9e4fa;border-radius:24px;padding:40px;margin-bottom:45px}.basics-hero h1{font-size:42px;line-height:1.35;margin:0 0 18px;letter-spacing:-.03em}.basics-hero h1 span{color:var(--blue)}.basics-lead{font-size:16px;max-width:400px;color:var(--ink-2)}.basics-hero-links{display:flex;gap:20px;flex-wrap:wrap;font-size:14px;font-weight:700;margin:24px 0}.basics-count{font-size:12px;color:var(--muted)}.basics-hero-art{overflow:hidden;border-radius:20px;background:#fffdf8;border:1px solid #dde3ee}.basics-hero-art img{width:100%;height:auto;display:block;aspect-ratio:3/2;object-fit:contain}.basics-hero-art span{display:block;font-size:12px;text-align:center;padding:5px 0 12px;color:var(--ink-2)}.basics-group{margin:0 0 36px;scroll-margin-top:90px}.basics-group>header{display:flex;align-items:center;gap:16px;margin-bottom:18px}.basics-number{display:grid;place-items:center;width:46px;height:46px;flex-shrink:0;background:#fbe7b9;border:1px solid #edd9ab;border-radius:15px;color:#6c5220;font:700 18px var(--mono)}.basics-group:nth-of-type(2) .basics-number{background:#dceee4;border-color:#c9dfd2;color:#2b6246}.basics-group:nth-of-type(3) .basics-number{background:#f9dfd9;border-color:#eac9c1;color:#9a4a3f}.basics-group h2{font-size:23px;margin:0}.basics-group header p{font-size:13px;color:var(--muted);margin:2px 0 0}.basics-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.basics-card{padding:23px;display:flex;flex-direction:column;color:var(--ink);background:white;border:1px solid var(--line);border-radius:18px;transition:border-color .15s,transform .15s}.basics-card:hover{border-color:#9db7ed;transform:translateY(-2px);text-decoration:none}.basics-card h3{font-size:17px;line-height:1.6;margin:0 0 10px}.basics-card p{font-size:13px;color:var(--ink-2);margin:0 0 20px;line-height:1.8;flex:1}.basics-card>span{display:flex;justify-content:space-between;font-size:12px;color:var(--blue)}.basics-footlinks{display:flex;gap:24px;flex-wrap:wrap;padding:20px 0;font-size:14px;border-top:1px solid var(--line)}.basic-layout{display:grid;grid-template-columns:200px minmax(0,1fr);gap:42px;padding:32px 0 60px;align-items:start}.basic-sidebar{position:sticky;top:94px;max-height:calc(100vh - 110px);overflow:auto;padding-right:12px}.basic-back{font-size:13px;font-weight:700}.basic-sidebar h2{font-size:12px;color:var(--muted);margin:24px 0 7px}.basic-sidebar nav a{display:block;font-size:13px;line-height:1.6;padding:6px 10px;border-radius:7px;color:var(--ink-2)}.basic-sidebar nav a[aria-current]{background:var(--blue-soft);color:var(--blue);font-weight:700}.basic-article{max-width:800px;background:white;border:1px solid var(--line);border-radius:20px;padding:34px 38px}.basic-article h1{font-size:30px;line-height:1.5;margin:0 0 12px}.basic-deck{color:var(--ink-2);font-size:15px;margin:0 0 12px}.basic-updated{font-size:12px;color:var(--muted)}.basic-toc{padding:12px 16px;border:1px solid var(--line);border-radius:12px;background:var(--bg);font-size:13px;margin:22px 0}.basic-toc summary{cursor:pointer}.basic-toc ul{margin:10px 0;padding-left:20px}.basic-article .content{font-size:16px;line-height:1.95}.basic-article .content h2{font-size:21px;line-height:1.6;scroll-margin-top:90px;margin-top:32px}.basic-article .content table{font-size:13px;line-height:1.8;width:100%}.basic-article .content img{border-radius:14px}.basic-figure{margin:24px 0}.basic-figure figcaption{font-size:12px;color:var(--muted);line-height:1.8}.basic-related{margin:36px 0 22px;border-top:1px solid var(--line);padding-top:18px}.basic-related h2{font-size:18px}.basic-related a{display:flex;justify-content:space-between;gap:15px;font-size:14px;padding:12px 0;border-bottom:1px solid var(--line-soft)}.wiki-basics-banner{margin:0 0 28px;padding:24px 28px;border:1px solid #d9e4fa;border-radius:18px;background:#edf3ff;display:flex;justify-content:space-between;gap:24px;align-items:center}.wiki-basics-banner h2{margin:0 0 4px;font-size:22px}.wiki-basics-banner p{margin:0;font-size:14px;color:var(--ink-2)}.wiki-basics-banner>a{white-space:nowrap;font-weight:700}.portal-basics-entry{margin-bottom:35px}.basic-article .content math{max-width:100%;overflow:auto}
@media(max-width:850px){.basics-hero{padding:26px;gap:20px}.basics-hero h1{font-size:33px}.basics-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.basic-layout{grid-template-columns:160px minmax(0,1fr);gap:20px}.basic-article{padding:25px}.basic-article h1{font-size:26px}}
@media(max-width:620px){.basics-home{padding-top:18px}.basics-hero{grid-template-columns:1fr;padding:24px;border-radius:18px}.basics-hero h1{font-size:32px}.basics-hero-art{max-width:400px}.basics-grid{grid-template-columns:1fr}.basics-card{padding:20px}.basic-layout{display:block;padding-top:20px}.basic-sidebar{position:static;max-height:none;padding:0 0 18px}.basic-sidebar nav{display:none}.basic-article{padding:22px 18px;border-radius:14px}.basic-article h1{font-size:25px}.basic-article .content{font-size:15px}.wiki-basics-banner{display:block;padding:20px}.wiki-basics-banner>a{display:inline-block;margin-top:12px}}

.basic-practice{margin-top:30px;padding:18px;border-radius:14px;background:var(--blue-soft)}.basic-practice h2{font-size:17px;margin:0 0 12px}.basics-practice-links{display:flex;gap:8px;flex-wrap:wrap}.basics-practice-links a{font-size:12px;border:1px solid #d5def3;padding:4px 10px;border-radius:8px;background:white}

.basic-sidebar nav,.basic-article nav{display:block;width:auto;white-space:normal}.basic-article nav a{white-space:normal}.basic-toc nav a{padding:3px 0;font-size:13px}.basic-sidebar nav a{white-space:normal}
@media(max-width:620px){.basic-sidebar nav{display:none}}

.basic-toc-title{margin:0;font-size:12px;font-weight:600;color:#68778b}.basic-toc #TableOfContents ul{margin-top:8px;margin-bottom:0}