:root{--ink:#25313b;--muted:#65717c;--paper:#fffdf9;--cream:#fff6e9;--accent:#f5a623;--accent2:#7ac7c4;--blue:#5b8def;--pink:#ef7c93;--line:#e8e0d6;--shadow:0 10px 30px rgba(55,42,28,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.55}.container{width:min(1160px,calc(100% - 32px));margin:auto}a{color:inherit;text-decoration:none}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,253,249,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav{min-height:72px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:20px;letter-spacing:-.4px}.brand b{color:#d47e13}.brand-mark{width:34px;height:34px;border-radius:11px;background:#ffe0a3;display:grid;place-items:center;color:#c77a09}.nav nav{display:flex;gap:6px;align-items:center}.nav nav a{padding:10px 13px;border-radius:10px;font-weight:650;font-size:14px}.nav nav a:hover{background:var(--cream)}.menu-toggle{display:none;border:0;background:none;font-size:25px}.hero{padding:66px 0 48px;text-align:center;background:radial-gradient(circle at 15% 10%,#fff0c8,transparent 30%),radial-gradient(circle at 90% 15%,#dff6f1,transparent 28%)}.eyebrow{display:inline-block;background:white;border:1px solid var(--line);padding:6px 12px;border-radius:999px;font-size:12px;font-weight:800;color:#a96812;text-transform:uppercase;letter-spacing:.08em}.hero h1{font-size:clamp(38px,6vw,64px);line-height:1.05;letter-spacing:-2.5px;margin:16px auto 12px;max-width:850px}.hero p{font-size:18px;color:var(--muted);max-width:650px;margin:0 auto 26px}.search{display:flex;max-width:680px;margin:auto;background:white;border:1px solid var(--line);border-radius:16px;padding:7px;box-shadow:var(--shadow)}.search input{flex:1;border:0;outline:0;padding:13px 14px;font-size:16px;background:transparent}.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:11px;padding:11px 16px;font-weight:800;cursor:pointer;background:var(--ink);color:white}.btn.primary{background:#e9931b}.btn.light{background:#fff4df;color:#a96812}.btn.outline{background:white;color:var(--ink);border:1px solid var(--line)}.section{padding:34px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:15px;margin-bottom:18px}.section h2{font-size:27px;letter-spacing:-.8px;margin:0}.muted{color:var(--muted)}.type-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:10px}.type-card{background:white;border:1px solid var(--line);padding:17px 9px;border-radius:15px;text-align:center;font-weight:750;font-size:13px;box-shadow:0 5px 15px rgba(55,42,28,.04);transition:.15s}.type-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.type-icon{font-size:27px;display:block;margin-bottom:5px}.activity-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}.card{background:white;border:1px solid var(--line);border-radius:17px;overflow:hidden;box-shadow:0 6px 18px rgba(55,42,28,.04);transition:.15s}.card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.card-img{height:190px;background:#fff;display:grid;place-items:center;border-bottom:1px solid var(--line)}.card-img img{width:100%;height:100%;object-fit:contain}.card-body{padding:14px}.pill-row{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}.pill{font-size:11px;font-weight:800;border-radius:999px;padding:4px 8px;background:#f4f0eb;color:#5f5146}.pill.easy{background:#e6f5ec;color:#257347}.pill.medium{background:#fff1cf;color:#96630b}.pill.hard{background:#fbe2e6;color:#a03a4d}.card h3{font-size:16px;line-height:1.25;margin:5px 0 5px}.card p{font-size:13px;color:var(--muted);margin:0}.card-link{display:block}.ad-slot{min-height:92px;border:1px dashed #d9d0c5;border-radius:12px;display:grid;place-items:center;color:#9b9186;font-size:12px;margin:24px 0;background:#fffcf7}.filters{display:flex;flex-wrap:wrap;gap:9px;margin:18px 0}.filters select,.filters input{padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:white;color:var(--ink)}.page-title{padding:38px 0 20px}.page-title h1{font-size:40px;letter-spacing:-1.3px;margin:0 0 7px}.breadcrumb{font-size:13px;color:var(--muted);margin:20px 0}.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.category-box{border:1px solid var(--line);background:white;border-radius:15px;padding:17px}.category-box h3{margin:0 0 10px}.tag-cloud{display:flex;flex-wrap:wrap;gap:7px}.tag-cloud a{font-size:13px;padding:6px 9px;background:var(--cream);border-radius:999px}.activity-hero{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:start;padding:22px 0 45px}.preview-box{background:white;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow)}.preview-box img{display:block;width:100%;max-height:600px;object-fit:contain}.detail h1{font-size:42px;line-height:1.1;letter-spacing:-1.5px;margin:8px 0 13px}.detail .description{font-size:17px;color:var(--muted)}.meta{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin:20px 0}.meta div{border:1px solid var(--line);border-radius:12px;padding:10px 12px;background:#fff}.meta small{display:block;color:var(--muted);font-size:11px;text-transform:uppercase;font-weight:800}.actions{display:flex;flex-wrap:wrap;gap:9px;margin:20px 0}.print-note{background:#f0faf8;border:1px solid #d5ece8;border-radius:12px;padding:13px;font-size:13px}.diff-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.diff-grid img{width:100%;border:1px solid var(--line);border-radius:12px}.prose{max-width:760px}.prose h1{font-size:40px}.prose h2{margin-top:28px}.prose p,.prose li{color:#4f5a63}.empty{padding:50px;text-align:center;border:1px dashed var(--line);border-radius:15px}.site-header+main{min-height:60vh}footer{margin-top:50px;background:#252e34;color:#e9eef0}.footer-grid{padding:42px 0;display:grid;grid-template-columns:2fr 1fr 1fr;gap:35px}.footer-grid .brand{color:white}.footer-grid a{display:block;color:#c7d0d5;margin:7px 0;font-size:14px}.footer-grid h3{font-size:14px;color:white}.footer-grid p{color:#aeb9bf;max-width:350px}.footer-bottom{border-top:1px solid #3b454c;text-align:center;padding:15px;color:#9eaaaf;font-size:12px}
@media(max-width:900px){.type-grid{grid-template-columns:repeat(4,1fr)}.activity-grid{grid-template-columns:repeat(3,1fr)}.activity-hero{grid-template-columns:1fr}.detail h1{font-size:35px}}
@media(max-width:650px){.container{width:min(100% - 22px,1160px)}.nav{min-height:64px}.menu-toggle{display:block}.nav nav{display:none;position:absolute;top:64px;left:0;right:0;background:white;border-bottom:1px solid var(--line);padding:10px;flex-direction:column}.nav nav.open{display:flex}.nav nav a{width:100%;text-align:center}.hero{padding:42px 0 35px}.hero h1{letter-spacing:-1.5px}.hero p{font-size:16px}.type-grid{grid-template-columns:repeat(2,1fr)}.activity-grid{grid-template-columns:repeat(2,1fr);gap:11px}.card-img{height:145px}.card-body{padding:11px}.category-grid{grid-template-columns:1fr}.page-title h1{font-size:32px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.meta{grid-template-columns:1fr}.detail h1{font-size:31px}.diff-grid{grid-template-columns:1fr}}
@media(max-width:420px){.activity-grid{grid-template-columns:1fr}.card-img{height:220px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}}
@media print{.site-header,footer,.no-print,.ad-slot,.actions,.breadcrumb{display:none!important}body{background:white}.container{width:100%;margin:0}.preview-box{border:0;box-shadow:none;padding:0}.preview-box img{max-height:9.2in}.detail{display:none}.print-page{display:block}}