:root{
  --green:#186B42;      /* サブタイトル色（サイト共通） */
  --leaf:#66B032;       /* ヘッダートップライン */
  --gold:#B8860B;       /* お知らせカテゴリ色 */
  --bg:#faf9f5;         /* サイト背景 */
  --ink:#333;
  --sub:#5f5f5f;
  --line:#dcdcdc;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:"Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP",Meiryo,sans-serif;
  font-size:15px;line-height:1.9;-webkit-text-size-adjust:100%}
a{color:var(--green)}
img{max-width:100%;vertical-align:bottom}
.container{width:960px;max-width:100%;margin:0 auto}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0}

/* ===== Header（既存サイト準拠） ===== */
.header{position:sticky;top:0;z-index:2000;background:#fff}
.gnav-wrap{border-top:2px solid var(--green);box-shadow:0 0 10px rgba(0,0,0,.2);background:#fff}
.gnav{list-style:none;display:flex;font-size:16px}
.gnav li{width:15.5%;text-align:center;border-right:1px solid #dbdbdb}
.gnav li.logo{width:22%;display:flex;align-items:center;justify-content:center}
.gnav li.logo img{width:150px}
.gnav a{display:block;padding:27px 0;font-weight:700;line-height:1;color:#333;text-decoration:none;transition:all .12s linear}
.gnav li:not(.logo) a:hover{background:#434343;color:#fff}
.sp-toggle,.sp-logo{display:none}

/* ===== Page title ===== */
.page-hero{padding:44px 0 4px}
.page-hero h1{font-size:30px;color:var(--green);font-weight:700;line-height:1.4;letter-spacing:.04em}
.page-hero h1 small{display:block;font-size:13px;letter-spacing:.2em;color:var(--gold);margin-top:4px;font-weight:700}

/* breadcrumb */
.crumb{font-size:12px;color:#777;padding:14px 0 0}
.crumb a{color:#555;text-decoration:none}
.crumb a:hover{text-decoration:underline}
.crumb span{margin:0 8px;color:#bbb}

/* ===== Section heading（.heading-31 準拠） ===== */
.heading-31{position:relative;padding:.3em 0 .2em 1em;border-bottom:3px solid var(--green);
  color:var(--green);font-size:22px;line-height:1.5;margin:0 0 22px}
.heading-31::before{position:absolute;top:0;left:.3em;transform:rotate(55deg);height:11px;width:12px;
  border-bottom:8px solid var(--green);content:''}
.heading-31::after{position:absolute;transform:rotate(15deg);top:.6em;left:0;height:8px;width:8px;
  border-bottom:8px solid var(--green);content:''}

.h3{font-size:18px;color:var(--green);font-weight:700;padding:0 0 8px;margin:38px 0 16px;
  border-bottom:1px solid #cfe1c4;display:flex;gap:10px;align-items:baseline}
.h3::before{content:"";flex:0 0 10px;height:10px;background:var(--leaf);border-radius:50%;transform:translateY(-1px)}
.h4{font-size:16px;font-weight:700;color:#2c2c2c;margin:26px 0 10px;padding-left:12px;border-left:4px solid var(--leaf);line-height:1.5}
.h5{font-size:15px;font-weight:700;color:var(--green);margin:18px 0 6px}

/* ===== Layout ===== */
main{padding:0 0 60px}
.block{background:#fff;border-radius:10px;box-shadow:0 12px 10px -6px rgba(0,0,0,.12);
  padding:36px 44px 40px;margin:28px 0 0}
.lead{font-size:15.5px;line-height:2;text-wrap:pretty}
.block p{text-wrap:pretty}
.block p + p{margin-top:12px}

/* TOC */
.toc{background:#fff;border:1px solid #d9e8cf;border-radius:10px;padding:22px 28px;margin:26px 0 0}
.toc-ttl{font-weight:700;color:var(--green);font-size:15px;margin-bottom:10px;letter-spacing:.06em}
.toc ol{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:4px 28px;counter-reset:t}
.toc li{counter-increment:t;font-size:14px}
.toc a{display:flex;gap:10px;color:#333;text-decoration:none;padding:5px 0;border-bottom:1px dashed #e2e2e2}
.toc a::before{content:counter(t,decimal-leading-zero);color:var(--gold);font-weight:700;font-feature-settings:"tnum"}
.toc a:hover{color:var(--green)}

/* numbered policy items */
.policy{list-style:none;counter-reset:p;margin-top:26px;display:grid;gap:14px}
.policy > li{counter-increment:p;display:grid;grid-template-columns:46px 1fr;gap:4px 16px;
  padding:18px 0 18px;border-top:1px solid #ececec}
.policy > li:first-child{border-top:none;padding-top:4px}
.policy > li::before{content:counter(p);grid-row:span 2;width:46px;height:46px;border-radius:50%;
  background:#eef6e6;color:var(--green);font-weight:700;font-size:19px;display:flex;align-items:center;justify-content:center}
.policy > li > h3{font-size:16.5px;color:var(--green);line-height:1.6;padding-top:9px}
.policy > li > p,.policy > li > div > p{color:#444}

/* bullet lists */
.list{list-style:none;display:grid;gap:6px;margin:8px 0}
.list > li{position:relative;padding-left:1.25em}
.list > li::before{content:"";position:absolute;left:.2em;top:.8em;width:6px;height:6px;border-radius:50%;background:var(--leaf)}
.sublist{list-style:none;margin:6px 0 2px;padding:10px 16px;background:#f7faf3;border-radius:6px;display:grid;gap:2px}
.sublist li{padding-left:1.1em;text-indent:-1.1em;font-size:14.5px}
.sublist li::before{content:"・"}
.olist{list-style:none;counter-reset:o;display:grid;gap:6px;margin:10px 0}
.olist li{counter-increment:o;padding-left:2em;text-indent:-2em}
.olist li::before{content:counter(o) ".　";color:var(--green);font-weight:700}

/* measures (term + description) */
.measures{display:grid;gap:0;margin-top:14px;border-top:1px solid #e6e6e6}
.measures > div{display:grid;grid-template-columns:220px 1fr;gap:20px;padding:16px 0;border-bottom:1px solid #e6e6e6}
.measures dt{font-weight:700;color:var(--green)}
.measures dd{margin:0;color:#444}

/* joint use */
.joint{margin-top:14px;border-top:1px solid #e6e6e6}
.joint > div{display:grid;grid-template-columns:220px 1fr;gap:20px;padding:14px 0;border-bottom:1px solid #e6e6e6}
.joint dt{font-weight:700;color:#444}
.joint dd{margin:0}

/* tool cards */
.tools{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:14px 0 6px}
.tool{border:1px solid #e3e3e3;border-radius:8px;padding:16px 18px;font-size:14px;background:#fcfdfb}
.tool b{display:block;font-size:15px;color:#222;margin-bottom:6px}
.tool dl{margin:0;display:grid;gap:6px}
.tool dt{font-size:12px;color:#777;letter-spacing:.04em}
.tool dd{margin:0;word-break:break-all}

/* notes */
.note{font-size:13.5px;color:#555;background:#f6f6f2;padding:14px 18px;border-radius:6px;margin:12px 0}
.kome{font-size:13.5px;color:#555;margin-top:10px;padding-left:1em;text-indent:-1em}

/* contact table（.table_design02 準拠） */
.table_design02{width:100%;margin:14px 0 6px;border-collapse:collapse;border-top:1px solid #c0c0c0;border-bottom:1px solid #c0c0c0}
.table_design02 tr{border-bottom:1px solid #c0c0c0}
.table_design02 tr:last-child{border-bottom:none}
.table_design02 th{width:25%;background:#f5f5f5;color:dimgray;text-align:center;padding:12px 0;font-weight:700}
.table_design02 td{background:#fff;padding:12px 0 12px 18px;color:#555}
.contact-cap{font-weight:700;font-size:14.5px;color:#333;margin-top:18px}

/* steps */
.steps{list-style:none;counter-reset:s;display:grid;gap:16px;margin-top:14px}
.steps > li{counter-increment:s;position:relative;padding:18px 22px 18px 74px;border:1px solid #e3ebdb;border-radius:8px;background:#fcfdfa}
.steps > li::before{content:"STEP\A" counter(s);white-space:pre;position:absolute;left:16px;top:18px;width:44px;
  text-align:center;font-size:10px;line-height:1.3;color:#fff;background:var(--green);border-radius:4px;padding:5px 0;font-weight:700;letter-spacing:.05em}
.steps > li > p:first-child{font-weight:700}
.dl-btn{display:inline-flex;align-items:center;gap:10px;margin-top:10px;padding:9px 18px;border-radius:4px;
  background:var(--gold);color:#fff;text-decoration:none;font-size:14px;font-weight:700;transition:filter .15s}
.dl-btn:hover{filter:brightness(1.08)}
.dl-btn::before{content:"PDF";font-size:10px;border:1px solid rgba(255,255,255,.7);padding:1px 4px;border-radius:2px;letter-spacing:.05em}
.id-group{margin-top:10px}
.id-group .h5{margin-top:12px}

.revision{margin-top:30px;padding-top:18px;border-top:1px solid #e6e6e6;font-size:14px;color:#555}

.sub-lead{font-weight:700;font-size:17px;color:#2c2c2c;margin-bottom:14px;line-height:1.6}

/* to top */
.pagetop{display:block;text-align:center;background:#fff;color:#333;font-size:14px;text-decoration:none;padding:24px 0;border-top:1px solid #eee}
.pagetop::before{content:"";display:inline-block;width:9px;height:9px;border-left:2px solid #333;border-top:2px solid #333;transform:rotate(45deg) translate(2px,2px);margin-right:14px}
.pagetop:hover{background:#ebebeb}

/* ===== Footer（既存サイト準拠） ===== */
.footer{text-align:center;background:gray;color:#000}
.footer-nav{background:lightgray;padding:15px 0}
.footer-nav ul{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;font-size:12.5px;font-weight:700;line-height:1}
.footer-nav li{border-left:1px solid #c9c9c9;padding:4px 14px}
.footer-nav li:last-child{border-right:1px solid #c9c9c9}
.footer-nav a{color:#333;text-decoration:none}
.footer-nav a:hover{color:#0D12FD}
.footer-copy{font-size:13px;line-height:1;padding:44px 0;background:#faf9f5}

/* ===== SP ===== */
@media (max-width:767px){
  body{font-size:14.5px}
  html{scroll-padding-top:56px}
    .gnav-wrap{border-top:none;box-shadow:0 1px 6px rgba(0,0,0,.12);height:48px;position:relative}
  .sp-logo{display:block;position:absolute;left:12px;top:12px;width:150px}
  .sp-toggle{display:block;position:absolute;right:10px;top:6px;width:36px;height:36px;border:0;background:none;cursor:pointer}
  .sp-toggle span,.sp-toggle::before,.sp-toggle::after{content:"";display:block;width:24px;height:2px;background:#333;margin:5px auto;transition:.2s}
  .header.open .sp-toggle span{opacity:0}
  .header.open .sp-toggle::before{transform:translateY(7px) rotate(45deg)}
  .header.open .sp-toggle::after{transform:translateY(-7px) rotate(-45deg)}
  .gnav{display:none;position:absolute;top:48px;left:0;right:0;flex-direction:column;background:#eee;box-shadow:0 2px 5px rgba(0,0,0,.2)}
  .header.open .gnav{display:flex}
  .gnav li{width:100%;text-align:left;border-right:none;border-bottom:1px solid #dbdbdb}
  .gnav li.logo{display:none}
  .gnav a{padding:18px 16px;font-weight:400}
  .page-hero{padding:28px 14px 0}
  .page-hero h1{font-size:23px}
  .page-hero h1 small{font-size:11px}
  .crumb{padding:12px 14px 0}
  main{padding:0 12px 40px}
  .block{padding:24px 18px 28px;margin-top:18px}
  .heading-31{font-size:18px}
  .toc{padding:18px}
  .toc ol{grid-template-columns:1fr}
  .policy > li{grid-template-columns:36px 1fr;gap:4px 12px}
  .policy > li::before{width:36px;height:36px;font-size:16px}
  .policy > li > h3{padding-top:5px}
  .measures > div,.joint > div{grid-template-columns:1fr;gap:4px}
  .tools{grid-template-columns:1fr}
  .table_design02 th,.table_design02 td{display:block;width:100%;text-align:left;padding:8px 12px}
  .table_design02 td{word-break:break-all}
  .steps > li{padding:16px 16px 16px 16px}
  .steps > li::before{position:static;display:inline-block;content:"STEP " counter(s);white-space:normal;width:auto;padding:3px 8px;margin-bottom:8px}
  .footer-nav ul{flex-direction:column;gap:12px;text-align:left;padding:0 20px}
  .footer-nav li,.footer-nav li:last-child{border:none;padding:0}
  .footer-copy{padding:16px 0}
}
@media print{
  .header,.toc,.pagetop,.footer-nav{display:none}
  .block{box-shadow:none;border:1px solid #ddd;break-inside:auto}
}
</style>