:root{--bg:#f8fafc;--fg:#0f172a;--muted:#475569;--primary:#22c55e;--card:#fff;--border:#e2e8f0;--accent:#60a5fa;--accent-2:#a78bfa;--shadow-sm:0 8px 24px rgba(15,23,42,.06);--shadow-lg:0 16px 36px rgba(15,23,42,.08);--ring:0 0 0 3px rgba(34,197,94,.18)}body,html{height:100%}body{margin:0;background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,PingFang SC,Microsoft YaHei,Noto Sans SC,HarmonyOS Sans SC,Source Han Sans SC,sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}.app-root{min-height:100vh;display:flex}.container{width:100%;max-width:980px;margin:0 auto;padding:20px 20px 88px;box-sizing:border-box}.container.admin{max-width:none}.hero{padding:18px;border:1px solid var(--border);border-radius:16px;margin-bottom:18px;background:radial-gradient(800px 400px at 20% 0,rgba(96,165,250,.14),transparent 60%),radial-gradient(800px 400px at 80% 0,rgba(34,197,94,.12),transparent 60%),linear-gradient(180deg,#fff,#f8fafc);box-shadow:var(--shadow-sm)}h1{font-size:22px;margin:0 0 12px}h2{font-size:18px;margin:16px 0 12px}.grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px;gap:16px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:12px;gap:12px}.card{display:block;text-decoration:none;color:var(--fg);box-shadow:var(--shadow-sm);transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}.card .title{font-size:16px;font-weight:700;letter-spacing:.2px}.card .tags{display:inline-block;margin-top:8px;background:#f1f5f9;border:1px solid var(--border);color:var(--muted);border-radius:999px;padding:6px 10px;font-size:12px;font-weight:600}.card:hover{border-color:#cbd5e1;transform:translateY(-2px);box-shadow:var(--shadow-lg)}.list{display:flex;flex-direction:column;gap:14px}.panel.compact{padding:8px;margin:8px 0}.panel.compact .list{gap:6px}.panel.compact .list-item{padding:8px}.panel.compact .title{font-size:14px}.panel.compact .textarea{min-height:60px;padding:8px 10px}.list-item{display:block;border:1px solid var(--border);border-radius:14px;padding:14px;text-decoration:none;color:var(--fg);background:var(--card);transition:background .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;box-shadow:var(--shadow-sm)}.list-item:hover{border-color:#cbd5e1;background:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg)}.list-item .title{font-weight:600;font-size:16px}.list-item .tags{color:var(--muted);font-size:14px;line-height:1.85;margin-top:8px;white-space:pre-line}.content{border:1px solid var(--border);border-radius:16px;padding:16px;background:var(--card)}.actions{display:flex;gap:12px;margin:12px 0}.buy-btn{padding:10px 14px;border-radius:10px;background:var(--primary);color:#052e14;border:none;font-weight:700;transition:transform .16s ease,box-shadow .16s ease}.buy-btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm)}.buy-btn:disabled{opacity:.7}.secondary{padding:10px 14px;border-radius:10px;border:1px solid var(--border);text-decoration:none;color:var(--fg);background:#fff;transition:transform .16s ease,box-shadow .16s ease}.secondary:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm)}.notice{border:1px dashed #cbd5e1;border-radius:12px;padding:12px;color:var(--muted);background:#f8fafc}.bottom-nav{position:fixed;bottom:0;left:0;right:0;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--border);background:#fff;-webkit-backdrop-filter:saturate(120%) blur(6px);backdrop-filter:saturate(120%) blur(6px)}.tab{display:block;padding:12px 8px;text-align:center;text-decoration:none;color:var(--muted);transition:color .16s ease}.tab.active{color:var(--fg);font-weight:700;box-shadow:inset 0 -2px var(--primary)}.run-frame{height:50vh;border:1px solid var(--border);border-radius:12px;overflow:hidden}.run-frame iframe{width:100%;height:100%;border:none;background:#fff}.form{display:grid;grid-template-columns:1fr;grid-gap:12px;gap:12px}.input{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--border);background:#fff;color:var(--fg);transition:box-shadow .16s ease,border-color .16s ease}.input:focus{outline:none;border-color:#cbd5e1;box-shadow:var(--ring)}.progress{height:10px;border-radius:999px;background:#fff;border:1px solid var(--border);overflow:hidden}.progress .bar{height:100%;background:var(--primary)}.score{margin-top:8px;color:var(--muted)}.step{border-left:4px solid var(--accent-2);background:linear-gradient(180deg,rgba(167,139,250,.09),rgba(96,165,250,.08));padding:16px;border-radius:16px;margin:16px 0}.step-header{display:flex;align-items:center;gap:10px;margin-bottom:8px}.step-badge{width:28px;height:28px;border-radius:8px;background:#7c3aed;color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:700}.step-title{font-size:20px;font-weight:800;letter-spacing:.3px}.panel{border:1px solid var(--border);border-radius:16px;padding:16px;margin:12px 0;background:var(--card);box-shadow:0 6px 16px rgba(2,6,23,.06)}.img-card{display:grid;grid-template-columns:1fr 1fr;grid-gap:8px;gap:8px;justify-items:center;border:1px solid #1f2937;padding:12px;background:linear-gradient(180deg,rgba(59,130,246,.15),rgba(34,197,94,.15))}.img-box,.img-card{align-items:center;border-radius:12px}.img-box{width:100%;height:64px;display:flex;justify-content:center;font-weight:700}.img-box.problem{background:#1e3a8a;color:#bfdbfe}.img-box.goal{background:#166534;color:#bbf7d0}.textarea{width:100%;min-height:96px;border-radius:12px;border:1px solid var(--border);background:#fff;color:var(--fg);padding:14px;resize:vertical;transition:box-shadow .16s ease,border-color .16s ease}.textarea:focus{outline:none;border-color:#cbd5e1;box-shadow:var(--ring)}.path-graph{padding:6px}.path-graph svg{width:100%;height:180px}.system-graph{padding:8px}.system-graph svg{width:100%;height:220px}.axes-graph{padding:8px}.axes-graph svg{width:100%;height:220px}.loop-graph{padding:8px}.loop-graph svg{width:100%;height:240px}.pyramid-graph{padding:8px}.pyramid-graph svg{width:100%;height:240px}.pie{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.legend{display:grid;grid-template-columns:1fr;grid-gap:8px;gap:8px}.legend-item{display:grid;grid-template-columns:20px 1fr 1fr;align-items:center;grid-gap:8px;gap:8px;color:var(--fg)}.legend-total{color:var(--muted);font-size:12px}.dot{width:14px;height:14px;border-radius:999px;display:inline-block}.range{width:140px}.cards{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:16px;gap:16px}.card{border:1px solid var(--border);border-radius:16px;padding:16px;background:var(--card)}.ring{width:72px;height:72px}.list.small .list-item{padding:8px}.cards .title{font-weight:700;margin:8px 0}.path-tabs{display:flex;gap:8px;margin:8px 0}.path-tab{padding:8px 12px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--fg)}.path-tab.active{background:var(--primary);color:#052e14;font-weight:700}.hero{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.hero .title{font-size:24px;font-weight:800;letter-spacing:.3px}.hero .meta{color:var(--muted)}.timeline{padding:8px 0}.timeline svg{width:100%;height:80px}@media (max-width:640px){.cards,.grid,.grid3{grid-template-columns:1fr;gap:12px}.container{padding:16px 16px 72px}.hero{flex-direction:column;align-items:flex-start;gap:6px}h1{font-size:20px}h2{font-size:16px}.card,.list-item{padding:14px}}