:root{
  --bg:#F4F2EC;--paper:#FBFAF6;--ink:#14201C;--sub:#5B6661;--line:#D8D4C8;
  --green:#0F5C4A;--green2:#0B4638;--lime:#C8E05A;--chip:#E6EFE9;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Zen Kaku Gothic New","Noto Sans JP",sans-serif;font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased}
a{color:inherit}
img,svg{max-width:100%}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px}
.mono{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.08em;color:var(--sub)}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--green);color:#fff;text-decoration:none;font-weight:700;font-size:15px;padding:13px 22px;border-radius:999px;border:1px solid var(--green);cursor:pointer;font-family:inherit}
.btn:hover{background:var(--green2)}
.btn.ghost{background:transparent;color:var(--green)}
.btn.ghost:hover{background:var(--chip)}

/* header */
header.top{position:sticky;top:0;z-index:20;background:rgba(244,242,236,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header.top .bar{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.brand{text-decoration:none;display:flex;align-items:center;gap:12px}
.brand .mark{width:30px;height:30px}
.brand b{font-family:"IBM Plex Sans",sans-serif;font-weight:600;letter-spacing:.04em;font-size:15px;display:block;line-height:1.2}
.brand span{font-size:11px;color:var(--sub);display:block;line-height:1.2}
nav.links{display:flex;gap:26px;font-size:14px}
nav.links a{text-decoration:none;color:var(--sub)}
nav.links a:hover{color:var(--ink)}
header.top .btn{padding:9px 18px;font-size:14px}

/* hero */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero .contour{position:absolute;inset:0;width:100%;height:100%;opacity:.55}
.hero .wrap{position:relative;padding-top:96px;padding-bottom:88px}
.hero h1{font-size:clamp(36px,6vw,72px);line-height:1.18;font-weight:900;margin:18px 0 22px;letter-spacing:-.01em}
.hero h1 em{font-style:normal;color:var(--green)}
.hero .lead{max-width:36em;font-size:17px;color:#2E3A35;margin:0 0 32px}
.hero .actions{display:flex;gap:12px;flex-wrap:wrap}
.hero .note{margin-top:22px;font-size:13px;color:var(--sub)}

/* spec strip */
.strip{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1px solid var(--line);background:var(--paper)}
.strip div{padding:26px 32px;border-right:1px solid var(--line)}
.strip div:last-child{border-right:0}
.strip b{display:block;font-family:"IBM Plex Sans",sans-serif;font-size:22px;font-weight:600;line-height:1.3}
.strip span{font-size:13px;color:var(--sub)}

section{padding:104px 0;border-bottom:1px solid var(--line)}
.head{display:grid;grid-template-columns:1fr 1.3fr;gap:40px;margin-bottom:48px;align-items:end}
.head h2{font-size:clamp(28px,3.6vw,42px);line-height:1.3;margin:8px 0 0;font-weight:900}
.head p{margin:0;color:#2E3A35}

/* services */
.svc{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.svc article{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:36px;display:flex;flex-direction:column;gap:14px}
.svc h3{font-size:24px;margin:0;font-weight:900}
.svc .for{margin:0;color:var(--sub);font-size:14px}
.svc ul{list-style:none;padding:0;margin:6px 0 0}
.svc li{padding:11px 0 11px 22px;border-top:1px solid var(--line);position:relative;font-size:15px}
.svc li::before{content:"";position:absolute;left:0;top:21px;width:9px;height:9px;border-radius:2px;background:var(--green)}
.svc .more{margin-top:auto;padding-top:10px}

/* format table */
.fmt{width:100%;border-collapse:collapse;background:var(--paper);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.fmt th,.fmt td{text-align:left;padding:15px 20px;border-bottom:1px solid var(--line);font-size:15px;vertical-align:top}
.fmt tr:last-child th,.fmt tr:last-child td{border-bottom:0}
.fmt th{width:13em;font-weight:700;background:#F1EFE7}
.fmt td{color:#2E3A35}

/* why */
.why{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.why article{border-top:3px solid var(--green);padding-top:20px}
.why .num{font-family:"IBM Plex Mono",monospace;font-size:13px;color:var(--green)}
.why h3{font-size:20px;margin:6px 0 10px}
.why p{margin:0;color:#2E3A35;font-size:15px}

/* flow */
.flows{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.flowcol{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:30px}
.flowcol h3{margin:0 0 4px;font-size:20px}
.flowcol>p{margin:0 0 16px;color:var(--sub);font-size:14px}
.flowcol ol{list-style:none;padding:0;margin:0;counter-reset:s}
.flowcol li{counter-increment:s;padding:14px 0 14px 46px;border-top:1px solid var(--line);position:relative}
.flowcol li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:14px;font-family:"IBM Plex Mono",monospace;color:var(--green);font-size:14px}
.flowcol li b{display:block}
.flowcol li span{font-size:14px;color:var(--sub)}

/* faq */
.faq details{border-top:1px solid var(--line);padding:4px 0}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-weight:700;padding:16px 0;list-style:none;display:flex;justify-content:space-between;gap:20px}
.faq summary::after{content:"+";font-family:"IBM Plex Mono",monospace;color:var(--green)}
.faq details[open] summary::after{content:"−"}
.faq details p{margin:0 0 18px;color:#2E3A35}

/* contact */
.contact{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px}
form{display:flex;flex-direction:column;gap:16px}
label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:700}
label em{font-style:normal;font-weight:400;color:var(--sub);font-size:12px}
input,select,textarea{font:inherit;font-weight:400;font-size:15px;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);width:100%}
textarea{min-height:140px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:2px solid var(--green);outline-offset:1px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.hp{position:absolute;left:-9999px}
#msg{font-size:14px;min-height:1.5em;margin:0}
#msg.ok{color:var(--green)}#msg.ng{color:#B23B2B}

/* company */
dl.co{display:grid;grid-template-columns:10em 1fr;margin:0;border-top:1px solid var(--line)}
dl.co dt,dl.co dd{padding:16px 0;border-bottom:1px solid var(--line);margin:0}
dl.co dt{color:var(--sub)}

footer{padding:36px 0 48px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}

/* listings page */
.page{padding-top:64px;padding-bottom:96px}
.crumb{font-size:13px;color:var(--sub);margin:0 0 16px}.crumb a{text-decoration:none}
.page h1{font-size:clamp(32px,5vw,52px);font-weight:900;line-height:1.25;margin:0 0 14px}
.filters{display:flex;gap:12px;flex-wrap:wrap;margin:32px 0 20px}
.filters select{width:auto;min-width:12em}
.empty{background:var(--paper);border:1px dashed #BDB8AA;border-radius:18px;padding:48px 32px;text-align:center}
.empty h2{margin:0 0 8px;font-size:22px}
.empty p{margin:0 auto 20px;max-width:34em;color:#2E3A35}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:24px;display:flex;flex-direction:column;gap:10px}
.card .kind{display:inline-block;font-size:12px;background:var(--chip);color:var(--green);border-radius:999px;padding:2px 10px;font-weight:700;align-self:flex-start}
.card h2{font-size:19px;margin:0}
.card dl{display:grid;grid-template-columns:7em 1fr;margin:0;font-size:14px}
.card dt{color:var(--sub)}.card dd{margin:0}

@media (max-width:900px){
  .wrap{padding:0 16px}
  nav.links{display:none}
  .strip{grid-template-columns:1fr 1fr}
  .strip div{padding:20px 16px}
  .strip div:nth-child(2){border-right:0}
  .strip div:nth-child(-n+2){border-bottom:1px solid var(--line)}
  section{padding:72px 0}
  .head,.svc,.why,.flows,.contact,.row2,.cards{grid-template-columns:1fr}
  .head{gap:12px}
  .svc article{padding:26px}
  .fmt th{width:7.5em}
  .fmt th,.fmt td{padding:12px 14px;font-size:14px}
  dl.co{grid-template-columns:7em 1fr}
  .hero .wrap{padding-top:64px;padding-bottom:60px}
}