:root{--bg: #FAFBFD;--card: #FFFFFF;--ink: #101A28;--muted: #46536A;--line: #E4E8F0;--primary: #2159C5;--primary-soft: #E5EDFB;--amber: #B9772A;--teal: #0E8C86;--rose: #B4463C;--radius: 14px;--shadow: 0 1px 3px rgba(16, 26, 40, .06), 0 4px 14px rgba(16, 26, 40, .05);--code-bg: #F1F4F9;--ink-faint: #7B8798}@media(prefers-color-scheme:dark){:root{--bg: #0B1017;--card: #131A24;--ink: #E8EDF4;--muted: #A4B0C0;--line: #263140;--primary: #6AA0F0;--primary-soft: #172A44;--shadow: 0 1px 3px rgba(0, 0, 0, .35), 0 4px 14px rgba(0, 0, 0, .25);--code-bg: #161E28;--ink-faint: #74808F}}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{background:var(--bg);color:var(--ink);font-family:Pretendard,Apple SD Gothic Neo,Malgun Gothic,system-ui,sans-serif;font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}.container{max-width:960px;margin:0 auto;padding:24px 20px 64px}.topnav{position:sticky;top:0;z-index:10;background:var(--card);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}.topnav-inner{max-width:960px;margin:0 auto;padding:0 20px;height:56px;display:flex;align-items:center;gap:20px}.topnav-logo{font-weight:800;font-size:15px;color:var(--ink);white-space:nowrap}.topnav-logo span{color:var(--primary)}.topnav-menu{display:flex;gap:4px;flex:1}.topnav-menu a{padding:6px 12px;border-radius:10px;color:var(--muted);font-weight:500}.topnav-menu a.active{background:var(--primary-soft);color:var(--primary);font-weight:700}.topnav-user{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:14px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.card+.card{margin-top:14px}.card-clickable{cursor:pointer;transition:transform .12s ease,border-color .12s ease}.card-clickable:hover{transform:translateY(-2px);border-color:var(--primary)}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:10px;border:1px solid var(--line);background:var(--card);color:var(--ink);font:inherit;font-weight:600;font-size:14px;cursor:pointer}.btn:hover{border-color:var(--primary);color:var(--primary)}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-primary:hover{color:#fff;opacity:.92}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-ghost{border:none;background:transparent;color:var(--muted)}.input,.textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);font:inherit}.input:focus,.textarea:focus{outline:2px solid var(--primary-soft);border-color:var(--primary)}.textarea{min-height:96px;resize:vertical}.field{margin-bottom:14px}.field label{display:block;font-size:13px;font-weight:700;color:var(--muted);margin-bottom:6px}.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}.tab{padding:6px 14px;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--muted);font:inherit;font-size:14px;font-weight:600;cursor:pointer}.tab.active{background:var(--primary);border-color:var(--primary);color:#fff}.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:700}.badge-primary{background:var(--primary-soft);color:var(--primary)}.badge-amber{background:color-mix(in srgb,var(--amber) 14%,transparent);color:var(--amber)}.badge-teal{background:color-mix(in srgb,var(--teal) 14%,transparent);color:var(--teal)}.badge-rose{background:color-mix(in srgb,var(--rose) 14%,transparent);color:var(--rose)}.progress-track{height:10px;border-radius:999px;background:var(--primary-soft);overflow:hidden}.progress-fill{height:100%;border-radius:999px;background:var(--primary);transition:width .25s ease}.check-row{display:flex;align-items:center;gap:10px;padding:10px 4px;border-bottom:1px solid var(--line);cursor:pointer}.check-row:last-child{border-bottom:none}.check-row input[type=checkbox]{width:18px;height:18px;accent-color:var(--primary);cursor:pointer}.check-row.done .check-label{color:var(--muted);text-decoration:line-through}.table{width:100%;border-collapse:collapse;font-size:14px}.table th,.table td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left}.table th{color:var(--muted);font-size:13px}.table tbody tr{cursor:pointer}.table tbody tr:hover{background:var(--primary-soft)}.page-title{font-size:22px;font-weight:800;margin-bottom:4px}.page-desc{color:var(--muted);margin-bottom:20px;font-size:14px}.section-title{font-size:15px;font-weight:800;color:var(--muted);margin:22px 0 10px}.error-text{color:var(--rose);font-size:14px;margin-top:8px}.muted{color:var(--muted)}.empty{color:var(--muted);text-align:center;padding:32px 0}.grid-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}.eyebrow{display:flex;align-items:center;gap:10px;font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--primary)}.eyebrow:before{content:"";width:22px;height:2px;border-radius:2px;background:var(--primary)}.hero{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:radial-gradient(120% 150% at 100% 0%,var(--primary-soft) 0%,transparent 55%),var(--card);box-shadow:var(--shadow);padding:28px 28px 26px;margin-bottom:22px}.hero h1{font-size:clamp(24px,4vw,32px);font-weight:800;letter-spacing:-.02em;line-height:1.2;margin:10px 0 8px;text-wrap:balance}.hero p{color:var(--muted);max-width:56ch}.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.chip{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;color:var(--muted);background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:5px 12px}.chip:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary)}.pill-nav{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}.pill-nav a{font-size:13px;font-weight:700;color:var(--muted);border:1px solid var(--line);background:var(--card);border-radius:999px;padding:6px 13px;transition:color .12s ease,border-color .12s ease}.pill-nav a:hover{color:var(--primary);border-color:var(--primary)}.pill-nav a b{color:var(--primary);margin-right:5px}.step-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;margin-top:16px;scroll-margin-top:76px}.step-head{display:flex;align-items:center;gap:14px;padding:15px 20px;background:var(--primary-soft);border-bottom:1px solid var(--line)}.step-num{flex:none;width:36px;height:36px;border-radius:11px;background:var(--primary);color:#fff;font-weight:800;font-size:15px;display:grid;place-items:center;font-variant-numeric:tabular-nums}.step-head h3{font-size:16.5px;font-weight:800;letter-spacing:-.015em}.step-head .step-sub{display:block;font-size:12.5px;font-weight:600;color:var(--muted);margin-top:1px}.step-body{padding:18px 20px 20px}.step-body>*+*{margin-top:12px}.olist{padding-left:4px;list-style:none;counter-reset:ol;display:grid;gap:9px}.olist li{counter-increment:ol;position:relative;padding-left:32px;line-height:1.7}.olist li:before{content:counter(ol);position:absolute;left:0;top:2px;width:22px;height:22px;border-radius:7px;background:var(--primary-soft);color:var(--primary);font-weight:800;font-size:12.5px;display:grid;place-items:center}.code-block{background:var(--code-bg);border:1px solid var(--line);border-radius:10px;padding:13px 15px;overflow-x:auto;font-family:Cascadia Code,SF Mono,Consolas,ui-monospace,monospace;font-size:13px;line-height:1.75;white-space:pre-wrap;word-break:break-word}.tip,.warn{border-radius:10px;padding:12px 15px;font-size:13.5px;line-height:1.65}.tip{background:color-mix(in srgb,var(--teal) 9%,transparent);border:1px solid color-mix(in srgb,var(--teal) 28%,transparent)}.tip b{color:var(--teal)}.warn{background:color-mix(in srgb,var(--amber) 10%,transparent);border:1px solid color-mix(in srgb,var(--amber) 32%,transparent)}.warn b{color:var(--amber)}.kbd{display:inline-block;padding:1px 8px;border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;background:var(--card);font-size:12.5px;font-weight:700;color:var(--ink);white-space:nowrap}inline-code,.icode{font-family:Cascadia Code,SF Mono,Consolas,ui-monospace,monospace;font-size:.92em;background:var(--code-bg);border-radius:5px;padding:1px 6px}.hero.compact{padding:22px 24px 20px;margin-bottom:18px}.hero.compact h1{font-size:clamp(21px,3.2vw,26px);margin:8px 0 6px}.stat-row{display:flex;align-items:center;gap:22px;flex-wrap:wrap}.stat{display:flex;align-items:baseline;gap:6px}.stat .stat-num{font-size:34px;font-weight:800;letter-spacing:-.02em;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1}.stat .stat-label{font-size:13px;font-weight:600;color:var(--muted)}.day-head{display:flex;align-items:center;gap:10px;margin:22px 0 10px}.day-head .day-badge{flex:none;padding:3px 12px;border-radius:8px;background:var(--primary);color:#fff;font-size:12.5px;font-weight:800;letter-spacing:.02em}.day-head .day-count{font-size:13px;color:var(--muted);font-weight:600}.assign-card{position:relative;overflow:hidden}.assign-card.submitted:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--teal)}.assign-title-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:8px}.assign-title{font-weight:800;font-size:16px;letter-spacing:-.01em}.fold summary{cursor:pointer;font-size:13.5px;font-weight:700;color:var(--primary);list-style:none;-webkit-user-select:none;user-select:none}.fold summary:before{content:"▸ "}.fold[open] summary:before{content:"▾ "}.fold[open] summary{margin-bottom:10px}