/* Droidly SEO topic pages (generated by tools/build_topic_pages.py) */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--g:#2e6040;--g2:#244d33;--g-dark:#0f2a1d;--g-tint:#e8f2ec;--bg:#f4f7f5;--line:#e3e8e5;--ink:#0f1117;--ink2:#374151;--muted:#5b6472}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{background:var(--bg);color:var(--ink);font-family:'DM Sans',system-ui,sans-serif;font-size:16px;line-height:1.6}
a{color:var(--g)}
h1,h2{font-family:'Plus Jakarta Sans','DM Sans',sans-serif;letter-spacing:-.02em;line-height:1.25;color:var(--ink)}
.tp-nav{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:16px;height:64px;padding:0 max(20px,calc((100% - 1100px)/2));background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-bottom:1px solid rgba(15,17,23,.08)}
.tp-logo{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink);font-family:'Plus Jakarta Sans',sans-serif;font-weight:800;font-size:19px}
.tp-logo img{height:30px;width:auto}
.tp-links{display:flex;gap:4px;margin-left:auto}
.tp-links a{color:#14171f;text-decoration:none;font-size:14.5px;font-weight:600;padding:8px 12px;border-radius:10px}
.tp-links a:hover{background:rgba(61,122,79,.08);color:var(--g)}
.tp-cta{background:var(--g);color:#fff;text-decoration:none;font-weight:700;font-size:14px;padding:9px 18px;border-radius:100px;white-space:nowrap}
.tp-cta:hover{background:var(--g2)}
.tp-wrap{max-width:820px;margin:0 auto;padding:22px 20px 60px}
.tp-crumb{display:flex;flex-wrap:wrap;gap:6px;font-size:13px;color:var(--muted);margin-bottom:14px}
.tp-crumb a{color:var(--muted);text-decoration:none}.tp-crumb a:hover{color:var(--g)}
.tp-head{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:0 10px 30px rgba(30,40,60,.06)}
.tp-head h1{font-size:34px}
.tp-intro{font-size:17px;color:var(--ink2);margin-top:12px}
.tp-by{font-size:13.5px;color:var(--muted);margin-top:14px}
.tp-by a{font-weight:600}
.tp-stats{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tp-stats span{font-size:13px;background:#f4f7f5;border:1px solid #e9eeeb;border-radius:100px;padding:5px 12px;color:var(--ink2)}
.tp-learn{display:flex;flex-wrap:wrap;gap:16px;margin-top:16px;font-size:14.5px;font-weight:700}
.tp-learn a{text-decoration:none}.tp-learn a:hover{text-decoration:underline}
.tp-box{display:flex;align-items:center;gap:18px;justify-content:space-between;background:var(--g-dark);color:#fff;border-radius:20px;padding:20px 24px;margin:20px 0}
.tp-box b{display:block;font-size:16px;margin-bottom:4px}
.tp-box span{font-size:14px;color:#cfe0d6}
.tp-box a{flex:none;background:#fff;color:var(--g-dark);text-decoration:none;font-weight:700;font-size:14.5px;padding:11px 18px;border-radius:100px}
.tp-box a:hover{background:var(--g-tint)}
.tp-toc{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px 28px;margin:20px 0}
.tp-toc h2,.tp-h2{font-size:21px;margin-bottom:12px}
.tp-toc ol{padding-left:24px;display:flex;flex-direction:column;gap:7px;font-size:15px}
.tp-toc li::marker{color:var(--muted);font-weight:600}
.tp-toc a{color:var(--ink);text-decoration:none}.tp-toc a:hover{color:var(--g);text-decoration:underline}
.tp-toc em{font-style:normal;font-size:11.5px;font-weight:700;color:#8a4b05;background:#fff0d4;border-radius:100px;padding:1px 7px;margin-left:6px;white-space:nowrap}
.tp-q{background:#fff;border:1px solid var(--line);border-radius:22px;padding:26px 28px;margin:16px 0}
.tp-q h2{font-size:21px;margin-top:10px}
.tp-chips{display:flex;gap:8px}
.tp-d,.tp-m{font-size:12px;font-weight:700;border-radius:100px;padding:3px 10px;font-style:normal}
.tp-d.easy{color:#1d6b3e;background:#dcf5e6}.tp-d.medium{color:#8a4b05;background:#fff0d4}.tp-d.hard{color:#b6341c;background:#ffe1da}
.tp-m{color:#1d4a30;background:var(--g-tint)}
.tp-qfoot{margin-top:16px;font-size:13.5px;color:var(--muted)}
.tp-qfoot a{font-weight:600}
/* answer content (same classes as the question bank) */
.answer-text{font-size:16px;color:var(--ink2);line-height:1.75;margin-top:14px}
.answer-text code,.tip-box code,.answer-points code{font-family:'JetBrains Mono',ui-monospace,monospace;font-size:13.5px;background:#eef2ef;color:#0f1117;border-radius:6px;padding:1px 5px}
.answer-points{list-style:none;margin-top:12px}
.answer-points li{font-size:15.5px;color:var(--ink2);padding:7px 0 7px 18px;line-height:1.6;border-bottom:1px solid #eef1ef;position:relative}
.answer-points li:last-child{border-bottom:0}
.answer-points li::before{content:'';position:absolute;left:2px;top:15px;width:6px;height:6px;border-radius:50%;background:#3d7a4f}
.code-block{display:block;background:#11171f;border-radius:12px;padding:16px 18px;margin:14px 0;font-family:'JetBrains Mono',ui-monospace,monospace;font-size:13px;line-height:1.75;color:#d7e0ea;white-space:pre;overflow-x:auto}
.kw{color:#cba6f7}.fn{color:#89b4fa}.str{color:#a6e3a1}.cm{color:#7f8796;font-style:italic}.tp{color:#f9e2af}.nm{color:#fab387}
.tip-box{margin:14px 0 2px;background:#fff8e8;border:1px solid #f1d28a;border-radius:14px;padding:14px 16px}
.tip-box .tip-label{font-size:11px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:#8a4b05;margin-bottom:6px}
.tip-box p{font-size:15px;color:var(--ink2);line-height:1.7}
/* system design hub */
.tp-steps{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px 28px;margin:20px 0}
.tp-steps h2{font-size:21px;margin-bottom:14px}
.tp-steps ol{padding-left:22px;display:flex;flex-direction:column;gap:12px}
.tp-steps li b{display:block;font-size:16px}.tp-steps li span{font-size:15px;color:var(--ink2)}
.tp-sds{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.tp-sd{display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;text-decoration:none;color:var(--ink)}
.tp-sd:hover{border-color:var(--g)}
.tp-sd b{font-size:16px}.tp-sd span{font-size:14px;color:var(--muted)}.tp-sd em{align-self:flex-start}
/* more topics + footer */
.tp-more{margin-top:28px}
.tp-more h2{font-size:21px;margin-bottom:12px}
.tp-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.tp-grid a{background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 14px;text-decoration:none;color:var(--ink);font-weight:600;font-size:14.5px}
.tp-grid a:hover{border-color:var(--g);color:var(--g)}
.tp-all{display:inline-block;margin-top:14px;font-weight:700}
.tp-foot{max-width:820px;margin:0 auto;padding:24px 20px 40px;display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center;font-size:13.5px;color:var(--muted);border-top:1px solid var(--line)}
.tp-foot .tp-logo{font-size:16px}
.tp-foot-links{display:flex;gap:16px;margin-left:auto}
.tp-foot-links a{color:var(--muted)}
@media(max-width:700px){
  .tp-links{display:none}.tp-cta{margin-left:auto}
  .tp-wrap{padding:16px 14px 48px}
  .tp-head,.tp-q,.tp-toc,.tp-steps{padding:20px 18px;border-radius:18px}
  .tp-head h1{font-size:26px}.tp-intro{font-size:16px}
  .tp-q h2{font-size:18.5px}
  .code-block{font-size:12px;white-space:pre-wrap;word-break:break-word}
  .tp-box{flex-direction:column;align-items:flex-start}
  .tp-grid,.tp-sds{grid-template-columns:1fr}
  .tp-foot-links{margin-left:0}
}