:root{
  --bg:#F6F7F5;--surface:#FFFFFF;--ink:#17201F;--ink2:#4B5654;--mute:#7A8582;--line:#D9DEDC;--line2:#EEF1EF;
  --teal:#1F4E5F;--teal-ink:#163C49;--teal-soft:#E6EEF0;
  --stamp:#B23A3A;--stamp-soft:#F7E8E8;--amber:#A9701C;--amber-soft:#F7EEDD;--ok:#2E6E5B;--ok-soft:#E4F0EB;
  --sans:"Pretendard Variable",Pretendard,-apple-system,"Malgun Gothic",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --maxw:1040px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.7;word-break:keep-all;-webkit-font-smoothing:antialiased}
a{color:var(--teal-ink)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #9CC1CB;outline-offset:2px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
/* header */
.top{border-bottom:1px solid var(--line);background:var(--bg)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:baseline;gap:10px;text-decoration:none;color:var(--ink)}
.brand b{font-size:20px;font-weight:800;letter-spacing:-.01em}
.brand span{font-size:13px;color:var(--mute)}
nav.menu{display:flex;gap:22px;font-size:14.5px}
nav.menu a{text-decoration:none;color:var(--ink2)}
nav.menu a:hover{color:var(--ink)}
@media (max-width:720px){nav.menu a:not(.btn){display:none}}
.btn{display:inline-block;padding:11px 18px;border-radius:6px;font-weight:700;font-size:15px;text-decoration:none;border:1.5px solid var(--teal);color:var(--teal-ink);background:transparent;cursor:pointer;font-family:inherit;line-height:1.3}
.btn.primary{background:var(--teal);color:#fff}
.btn.primary:hover{background:var(--teal-ink)}
.btn.small{padding:8px 14px;font-size:14px}
/* hero */
.hero{padding:72px 0 56px}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:48px;align-items:center}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr;gap:36px}.hero{padding:44px 0 40px}}
h1{font-size:clamp(30px,4.2vw,44px);line-height:1.22;letter-spacing:-.02em;margin:0 0 18px;font-weight:800}
.hero p.lead{font-size:17.5px;color:var(--ink2);margin:0 0 26px;max-width:34em}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.hero .fine{font-size:13.5px;color:var(--mute);margin-top:14px}
/* ledger (hero object) */
.ledger{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:6px 0 0;box-shadow:0 1px 0 rgba(23,32,31,.04)}
.ledger .head{display:flex;justify-content:space-between;align-items:center;padding:8px 16px 10px;border-bottom:1px solid var(--line2);font-size:13px;color:var(--mute)}
.ledger .head b{color:var(--ink);font-weight:700}
.row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center;padding:13px 16px;border-bottom:1px solid var(--line2)}
.row:last-child{border-bottom:0}
.row .who{font-size:13px;color:var(--mute);margin-bottom:3px}
.row .stamp{font-family:var(--mono);font-size:12.6px;line-height:1.5;color:var(--ink);word-break:break-all}
.row .stamp em{font-style:normal;background:var(--teal-soft);color:var(--teal-ink);padding:0 4px;border-radius:3px}
.status{display:flex;flex-direction:column;align-items:flex-end;gap:4px;min-width:84px}
.badge{font-size:12px;font-weight:700;padding:3px 9px;border-radius:999px;border:1px solid transparent;white-space:nowrap}
.badge.ok{background:var(--ok-soft);color:var(--ok)}
.badge.soon{background:var(--amber-soft);color:var(--amber)}
.badge.over{background:var(--stamp-soft);color:var(--stamp)}
.dday{font-family:var(--mono);font-size:13px;color:var(--ink2)}
.dday.over{color:var(--stamp);font-weight:700}
.ledger .foot{padding:10px 16px 12px;font-size:12.5px;color:var(--mute);border-top:1px solid var(--line2);background:#FBFCFB;border-radius:0 0 8px 8px}
.ledger .foot b{color:var(--stamp)}
@media (prefers-reduced-motion:no-preference){
  .status{opacity:0;transform:translateY(4px);animation:rise .5s ease forwards}
  .row:nth-child(2) .status{animation-delay:.25s}.row:nth-child(3) .status{animation-delay:.5s}.row:nth-child(4) .status{animation-delay:.75s}
  @keyframes rise{to{opacity:1;transform:none}}
}
/* sections */
section{padding:56px 0}
section+section{border-top:1px solid var(--line)}
h2{font-size:clamp(22px,2.6vw,28px);line-height:1.3;letter-spacing:-.015em;margin:0 0 10px;font-weight:800}
.sub{color:var(--ink2);margin:0 0 26px;max-width:40em;font-size:16.5px}
h3{font-size:17px;margin:0 0 8px;font-weight:800}
p{max-width:44em}
/* fact table */
table{width:100%;border-collapse:collapse;font-size:15px;background:var(--surface);border:1px solid var(--line);border-radius:8px;overflow:hidden}
th,td{padding:13px 14px;border-bottom:1px solid var(--line2);vertical-align:top;text-align:left}
tr:last-child td{border-bottom:0}
th{font-size:13px;color:var(--mute);font-weight:600;background:#FBFCFB}
td.num{font-family:var(--mono);font-size:22px;font-weight:600;color:var(--teal-ink);white-space:nowrap;width:120px;line-height:1.2}
td.src{font-size:13px;color:var(--mute);width:26%}
@media (max-width:640px){td.src{display:none}th.src{display:none}td.num{font-size:19px;width:90px}}
/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:8px;overflow:hidden}
.steps>div{background:var(--surface);padding:18px 18px 20px}
.steps .k{font-family:var(--mono);font-size:12.5px;color:var(--teal);margin-bottom:8px}
.steps h3{font-size:16.5px}
.steps p{font-size:14.5px;color:var(--ink2);margin:0}
@media (max-width:860px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.steps{grid-template-columns:1fr}}
.two{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:22px}
@media (max-width:720px){.two{grid-template-columns:1fr}}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:20px 22px}
.panel.quiet{background:transparent}
.panel ul{margin:0;padding-left:18px;color:var(--ink2);font-size:15px}
.panel li{margin-bottom:6px}
/* accordion */
details{background:var(--surface);border:1px solid var(--line);border-radius:8px;margin-bottom:10px}
summary{cursor:pointer;padding:15px 18px;font-weight:700;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-weight:400;color:var(--mute);font-size:20px;line-height:1}
details[open] summary::after{content:"–"}
details .body{padding:0 18px 16px;color:var(--ink2);font-size:15px}
details .body p{margin:0 0 8px}
/* pricing */
.plans{width:100%}
.plans td:first-child{font-weight:700;white-space:nowrap}
.plans td.price{font-family:var(--mono);white-space:nowrap;color:var(--teal-ink);font-weight:600}
.note{font-size:13.5px;color:var(--mute);margin-top:10px}
/* diag cta */
.diag{background:var(--teal);color:#fff;border-radius:10px;padding:34px 32px;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:28px;align-items:center}
.diag h2{color:#fff;margin-bottom:8px}
.diag p{color:#D7E3E6;margin:0 0 18px;font-size:15.5px}
.diag ul{margin:0 0 18px;padding-left:18px;color:#EAF1F2;font-size:15px}
.diag .btn{background:#fff;color:var(--teal-ink);border-color:#fff}
.diag .btn:hover{background:#EAF1F2}
.diag .side{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:8px;padding:16px 18px;font-size:14px;color:#EAF1F2}
.diag .side b{display:block;color:#fff;margin-bottom:6px}
@media (max-width:760px){.diag{grid-template-columns:1fr;padding:26px 20px}}
/* footer */
footer{border-top:1px solid var(--line);padding:30px 0 40px;font-size:13.5px;color:var(--mute)}
footer .wrap{display:grid;grid-template-columns:1fr auto;gap:18px}
footer .biz{line-height:1.9}
footer .links a{margin-left:14px;color:var(--ink2);text-decoration:none}
footer .links a:first-child{margin-left:0}
@media (max-width:720px){footer .wrap{grid-template-columns:1fr}}
.disclaim{font-size:13px;color:var(--mute);border-top:1px solid var(--line2);margin-top:14px;padding-top:12px;max-width:none}
/* forms */
.form{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:26px 26px 22px;max-width:640px}
.field{margin-bottom:16px}
label{display:block;font-weight:700;font-size:14.5px;margin-bottom:6px}
label .opt{font-weight:400;color:var(--mute)}
input[type=text],input[type=email],input[type=tel],select,textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:6px;font:inherit;font-size:15px;background:#fff;color:var(--ink)}
input[type=file]{font-size:14px}
.help{font-size:13px;color:var(--mute);margin-top:5px}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink2)}
.check input{margin-top:5px}
.alert{border-radius:6px;padding:12px 14px;font-size:14.5px;margin-top:14px}
.alert.ok{background:var(--ok-soft);color:var(--ok)}
.alert.err{background:var(--stamp-soft);color:var(--stamp)}
.alert.info{background:var(--teal-soft);color:var(--teal-ink)}
.page-title{padding:56px 0 8px}
.page-title h1{font-size:clamp(26px,3.4vw,36px)}
.prose{max-width:44em;font-size:15.5px;color:var(--ink2)}
.prose h3{color:var(--ink);margin-top:26px}
.prose li{margin-bottom:6px}
.dl{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:22px 24px;display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin:22px 0}
.dl b{display:block;font-size:17px}
.dl span{font-size:14px;color:var(--mute)}