:root{--btc:#f7931a;--btc-strong:#e07b00;--btc-soft:#fff3e2;--btc-ghost:#fff9f0;--ink:#101828;--ink-2:#344054;--muted:#667085;--faint:#98a2b3;--bg:#f6f7f9;--card:#fff;--line:#e4e7ec;--line-soft:#f0f2f5;--green:#128a4d;--green-soft:#e7f6ee;--red:#d92d20;--red-soft:#fdecea;--amber:#b54708;--amber-soft:#fef3e8;--blue:#175cd3;--blue-soft:#ebf1fe;--violet:#6941c6;--violet-soft:#f2eefc;--model-a:#175cd3;--model-b:#f7931a;--model-c:#6941c6;--model-d:#128a4d;--r-sm:8px;--r-md:12px;--r-lg:16px;--r-xl:20px;--shadow-1:0 1px 2px #1018280f, 0 1px 3px #10182814;--shadow-2:0 4px 12px #1018281a;--shell-w:480px;--nav-h:64px;--font:"Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Segoe UI", sans-serif}*,:before,:after{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:var(--font);color:var(--ink);-webkit-font-smoothing:antialiased;background:#eceef2;font-size:15px;line-height:1.55}h1,h2,h3,h4{letter-spacing:-.02em;margin:0;line-height:1.3}p{margin:0}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}strong{font-weight:700}button{cursor:pointer;font-family:inherit}input,select{font-family:inherit}.num,.stat-value,td,.amount,.price{font-variant-numeric:tabular-nums}.app-shell{max-width:var(--shell-w);background:var(--bg);min-height:100vh;box-shadow:0 0 0 1px var(--line);margin:0 auto;position:relative}.page{padding:16px 16px 40px}.page.with-nav{padding-bottom:calc(var(--nav-h) + 32px)}.page-wide .page{max-width:720px;margin:0 auto}.topbar{z-index:20;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);background:#f6f7f9e6;align-items:center;gap:10px;padding:12px 16px;display:flex;position:sticky;top:0}.topbar .brand{letter-spacing:-.02em;align-items:center;gap:8px;font-size:17px;font-weight:800;display:flex}.topbar .brand .logo{background:var(--btc);color:#fff;border-radius:8px;place-items:center;width:26px;height:26px;font-size:14px;font-weight:800;display:grid}.topbar .spacer{flex:1}.topbar .icon-btn{border:1px solid var(--line);background:var(--card);border-radius:10px;place-items:center;width:36px;height:36px;font-size:16px;display:grid}.back-link{color:var(--ink-2);font-size:20px;line-height:1;text-decoration:none}.back-link:hover{text-decoration:none}.privacy-badge{color:var(--green);background:var(--green-soft);border-radius:999px;align-items:center;gap:5px;padding:3px 9px;font-size:11px;font-weight:600;display:inline-flex}.bottom-nav{width:100%;max-width:var(--shell-w);height:var(--nav-h);background:var(--card);border-top:1px solid var(--line);z-index:30;display:flex;position:fixed;bottom:0;left:50%;transform:translate(-50%)}.bottom-nav a{color:var(--muted);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:2px;font-size:10.5px;font-weight:600;text-decoration:none;display:flex}.bottom-nav a .ic{font-size:19px;line-height:1}.bottom-nav a.active{color:var(--btc-strong)}.page-title{margin:8px 0 4px;font-size:22px;font-weight:800}.page-desc{color:var(--muted);font-size:14px}.section-title{margin:28px 0 10px;font-size:16px;font-weight:700}.section-sub{color:var(--muted);margin:-6px 0 10px;font-size:13px}.eyebrow{letter-spacing:.04em;color:var(--btc-strong);text-transform:uppercase;margin-bottom:6px;font-size:12px;font-weight:700}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);padding:18px}.card+.card{margin-top:12px}.card-title{margin-bottom:8px;font-size:15px;font-weight:700}.card-accent{border-top:3px solid var(--btc)}.btn{border-radius:var(--r-md);border:1px solid #0000;justify-content:center;align-items:center;gap:6px;padding:12px 18px;font-size:15px;font-weight:700;text-decoration:none;transition:filter .15s;display:inline-flex}.btn:hover{filter:brightness(.96);text-decoration:none}.btn-primary{background:var(--btc);color:#fff}.btn-dark{background:var(--ink);color:#fff}.btn-outline{background:var(--card);border-color:var(--line);color:var(--ink-2)}.btn-ghost{color:var(--btc-strong);background:0 0;padding:8px 10px}.btn-sm{padding:8px 12px;font-size:13px}.btn-block{width:100%;display:flex}.btn:disabled,.btn.disabled{opacity:.45;pointer-events:none}.chip{border:1px solid var(--line);background:var(--card);color:var(--ink-2);border-radius:999px;align-items:center;gap:5px;padding:5px 12px;font-size:13px;font-weight:600;display:inline-flex}.chip.selected{border-color:var(--btc);color:var(--btc-strong);background:var(--btc-soft)}.chip-row{flex-wrap:wrap;gap:8px;display:flex}.segmented{background:var(--line-soft);border-radius:var(--r-md);gap:3px;padding:3px;display:flex}.segmented button,.segmented span{color:var(--muted);text-align:center;background:0 0;border:0;border-radius:9px;flex:1;padding:9px 4px;font-size:13.5px;font-weight:700}.segmented .active{background:var(--card);color:var(--ink);box-shadow:var(--shadow-1)}.field{margin-bottom:16px}.field label{color:var(--ink-2);margin-bottom:6px;font-size:13px;font-weight:700;display:block}.field .hint{color:var(--faint);margin-top:5px;font-size:12px}.input-wrap{border:1px solid var(--line);border-radius:var(--r-md);background:var(--card);align-items:center;display:flex;overflow:hidden}.input-wrap:focus-within{border-color:var(--btc);box-shadow:0 0 0 3px var(--btc-soft)}.input-wrap input,.input-wrap select{font-variant-numeric:tabular-nums;background:0 0;border:0;outline:0;flex:1;padding:13px 14px;font-size:16px;font-weight:600}.input-wrap .unit{color:var(--muted);padding:0 14px 0 0;font-size:14px;font-weight:600}.stat-label{color:var(--muted);font-size:12.5px;font-weight:600}.stat-value{letter-spacing:-.02em;margin-top:2px;font-size:26px;font-weight:800}.stat-value.sm{font-size:20px}.stat-value .unit{color:var(--muted);font-size:15px;font-weight:700}.stat-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.stat-grid .card{padding:14px 16px}.table-wrap{border:1px solid var(--line);border-radius:var(--r-md);background:var(--card);overflow-x:auto}table.table{border-collapse:collapse;width:100%;font-size:13.5px}.table th,.table td{text-align:right;white-space:nowrap;padding:10px 12px}.table th:first-child,.table td:first-child{text-align:left}.table thead th{color:var(--muted);background:var(--line-soft);border-bottom:1px solid var(--line);font-size:12px;font-weight:700}.table tbody tr+tr td{border-top:1px solid var(--line-soft)}.table .em{font-weight:800}.table tfoot td{border-top:1px solid var(--line);font-weight:700}.dot{vertical-align:1px;border-radius:50%;width:9px;height:9px;margin-right:6px;display:inline-block}.dot.a{background:var(--model-a)}.dot.b{background:var(--model-b)}.dot.c{background:var(--model-c)}.dot.d{background:var(--model-d)}.badge{border-radius:999px;align-items:center;gap:4px;padding:3px 9px;font-size:11.5px;font-weight:700;display:inline-flex}.badge.green{background:var(--green-soft);color:var(--green)}.badge.red{background:var(--red-soft);color:var(--red)}.badge.amber{background:var(--amber-soft);color:var(--amber)}.badge.blue{background:var(--blue-soft);color:var(--blue)}.badge.violet{background:var(--violet-soft);color:var(--violet)}.badge.gray{background:var(--line-soft);color:var(--muted)}.notice{border-radius:var(--r-md);gap:9px;padding:13px 15px;font-size:13px;line-height:1.6;display:flex}.notice .ic{flex-shrink:0;font-size:15px;line-height:1.5}.notice.warn{background:var(--amber-soft);color:#7a3803}.notice.danger{background:var(--red-soft);color:#8a1a10}.notice.info{background:var(--blue-soft);color:#123e7d}.notice.neutral{background:var(--line-soft);color:var(--ink-2)}.core-disclaimer{color:var(--muted);background:var(--btc-ghost);border:1px dashed var(--btc);border-radius:var(--r-md);align-items:flex-start;gap:8px;padding:10px 12px;font-size:12px;line-height:1.55;display:flex}.core-disclaimer .ic{color:var(--btc-strong)}.chart-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);padding:16px}.chart-card svg{width:100%;height:auto;display:block}.legend{color:var(--muted);flex-wrap:wrap;gap:10px 16px;margin-top:10px;font-size:12px;display:flex}.legend .dot{width:8px;height:8px}.chart-caption{color:var(--faint);margin-top:8px;font-size:11.5px}.range-bar{background:var(--line-soft);border-radius:999px;height:8px;position:relative}.range-bar .fill{background:var(--btc);opacity:.85;border-radius:999px;position:absolute;top:0;bottom:0}.range-bar .tick{background:var(--ink);width:2px;position:absolute;top:-3px;bottom:-3px}.row-list{flex-direction:column;display:flex}.row-list .row{align-items:center;gap:12px;padding:13px 2px;display:flex}.row-list .row+.row{border-top:1px solid var(--line-soft)}.row .row-icon{border-radius:12px;flex-shrink:0;place-items:center;width:38px;height:38px;font-size:17px;display:grid}.row .row-main{flex:1;min-width:0}.row .row-title{font-size:14px;font-weight:700}.row .row-sub{color:var(--muted);margin-top:1px;font-size:12px}.row .row-side{text-align:right;flex-shrink:0}.row .row-amount{font-variant-numeric:tabular-nums;font-size:14px;font-weight:800}.row .row-chevron{color:var(--faint);font-size:18px}.progress{background:var(--line-soft);border-radius:999px;height:6px;overflow:hidden}.progress .bar{background:var(--btc);border-radius:999px;height:100%}.progress .bar.green{background:var(--green)}.progress .bar.red{background:var(--red)}.step-dots{justify-content:center;gap:6px;margin:14px 0;display:flex}.step-dots span{background:var(--line);border-radius:50%;width:7px;height:7px}.step-dots span.on{background:var(--btc);border-radius:999px;width:20px}.prose{color:var(--ink-2);font-size:14.5px;line-height:1.75}.prose h2{color:var(--ink);margin:32px 0 10px;font-size:19px}.prose h3{color:var(--ink);margin:24px 0 8px;font-size:16px}.prose p{margin:0 0 12px}.prose ul,.prose ol{margin:0 0 14px;padding-left:20px}.prose li{margin-bottom:6px}.prose blockquote{border-left:3px solid var(--btc);background:var(--btc-ghost);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--ink-2);margin:16px 0;padding:12px 16px}.hub-list{gap:10px;display:grid}.hub-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);color:var(--ink);box-shadow:var(--shadow-1);align-items:center;gap:14px;padding:16px;text-decoration:none;display:flex}.hub-item:hover{border-color:var(--btc);text-decoration:none}.hub-item .hub-no{background:var(--btc-soft);width:34px;height:34px;color:var(--btc-strong);border-radius:10px;flex-shrink:0;place-items:center;font-size:13px;font-weight:800;display:grid}.hub-item .hub-title{font-size:15px;font-weight:700}.hub-item .hub-desc{color:var(--muted);margin-top:2px;font-size:12.5px}.footer{text-align:center;color:var(--faint);padding:28px 16px 32px;font-size:12px;line-height:1.7}.footer a{color:var(--muted)}.divider{border:0;border-top:1px solid var(--line);margin:20px 0}.mt8{margin-top:8px}.mt12{margin-top:12px}.mt16{margin-top:16px}.mt24{margin-top:24px}.mb8{margin-bottom:8px}.mb12{margin-bottom:12px}.mb16{margin-bottom:16px}.flex{align-items:center;gap:8px;display:flex}.flex-between{justify-content:space-between;align-items:center;gap:8px;display:flex}.grid-2{grid-template-columns:1fr 1fr;gap:12px;display:grid}.text-muted{color:var(--muted)}.text-faint{color:var(--faint)}.text-green{color:var(--green)}.text-red{color:var(--red)}.text-btc{color:var(--btc-strong)}.text-sm{font-size:13px}.text-xs{font-size:12px}.fw7{font-weight:700}.fw8{font-weight:800}.center{text-align:center}.mono{font-variant-numeric:tabular-nums;letter-spacing:-.01em}html,body{-webkit-overflow-scrolling:touch}a.text-link{color:var(--blue);text-decoration:none}a.text-link:hover{text-decoration:underline}.input-wrap input:focus,.input-wrap select:focus{outline:none}.checkbox-row{align-items:center;gap:10px;padding:10px 2px;display:flex}.checkbox-row input[type=checkbox]{width:18px;height:18px;accent-color:var(--btc);flex-shrink:0}.model-row-a{border-left:3px solid var(--model-a)}.model-row-b{border-left:3px solid var(--model-b)}.model-row-c{border-left:3px solid var(--model-c)}.model-row-d{border-left:3px solid var(--model-d)}.month-dot{border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:12px;font-weight:700;display:flex}.result-stat{font-size:28px;font-weight:800}.depleted .bar{background:var(--red)}input[type=file]{color:var(--ink-2);padding:0;font-size:13px}@media (width<=480px){.page{padding:14px 14px 16px}}