*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
body{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
@media (prefers-reduced-motion: reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

:root{
  --bg:#f3f6f6;--ink:#152528;--accent:#0f8a80;--accent2:#0b6a63;--soft:#e4efee;
  --line:#d3e3e1;--muted:#5a6f70;--foot-bg:#122324;--foot-fg:#e6f2f0;
  --ff-disp:'Zen Maru Gothic',sans-serif;--ff-body:'Zen Kaku Gothic New',sans-serif;
  --maxw:1080px;--radius:10px;
}
body{font-family:var(--ff-body);background:var(--bg);color:var(--ink);line-height:1.9;font-size:16px}
.shell{position:relative}

/* header — solid top bar, left logo, right nav (distinct from floating pill) */
.topbar{position:sticky;top:0;z-index:80;background:rgba(243,246,246,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.tb-in{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 24px}
.tb-in .logo{font-family:var(--ff-disp);font-weight:700;font-size:20px;color:var(--ink);display:flex;align-items:center;gap:9px}
.tb-in .logo::before{content:"";width:14px;height:14px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--soft)}
.tb-nav ul{display:flex;gap:26px}
.tb-nav a{font-size:14px;font-weight:500;color:var(--muted);transition:.2s;position:relative;padding:4px 0}
.tb-nav a:hover,.tb-nav a.is-active{color:var(--accent)}
.tb-nav a.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);border-radius:2px}

/* hero */
.rc-hero{background:radial-gradient(120% 140% at 80% -10%,#1c4a48 0%,#122324 60%);color:#eafaf7;padding:96px 24px 104px;position:relative;overflow:hidden}
.rc-hero .in{max-width:var(--maxw);margin:0 auto;position:relative;z-index:2}
.rc-hero .k{font-family:var(--ff-disp);color:#57d6c6;letter-spacing:.18em;font-size:13px;margin-bottom:18px}
.rc-hero h1{font-family:var(--ff-disp);font-weight:700;font-size:clamp(29px,5.2vw,50px);line-height:1.45;margin-bottom:22px}
.rc-hero p{color:rgba(234,250,247,.82);max-width:52ch;line-height:2}
.rc-hero .halo{position:absolute;right:-120px;top:-60px;width:420px;height:420px;border-radius:50%;border:2px solid rgba(87,214,198,.22);z-index:1}
.rc-hero .halo::before{content:"";position:absolute;inset:52px;border-radius:50%;border:2px solid rgba(87,214,198,.16)}
.rc-hero .halo::after{content:"";position:absolute;inset:118px;border-radius:50%;border:2px solid rgba(87,214,198,.12)}
.rc-cta{display:inline-flex;align-items:center;gap:10px;margin-top:30px;background:var(--accent);color:#fff;font-family:var(--ff-disp);font-weight:700;font-size:15px;padding:14px 28px;border-radius:40px;transition:.25s}
.rc-cta:hover{background:#12a294;transform:translateY(-2px)}

/* home steps overview */
.rc-flow{max-width:var(--maxw);margin:0 auto;padding:82px 24px 20px}
.rc-flow .lead-head{text-align:center;margin-bottom:52px}
.rc-flow .lead-head .eyebrow{font-family:var(--ff-disp);letter-spacing:.2em;font-size:12px;color:var(--accent);margin-bottom:12px}
.rc-flow .lead-head h2{font-family:var(--ff-disp);font-weight:700;font-size:clamp(23px,4vw,32px)}
.flow-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.flow-c{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;position:relative;transition:.25s}
.flow-c:hover{transform:translateY(-4px);box-shadow:0 20px 40px -28px rgba(15,138,128,.5);border-color:var(--accent)}
.flow-c .no{font-family:var(--ff-disp);font-weight:700;font-size:13px;color:#fff;background:var(--accent);width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.flow-c h3{font-family:var(--ff-disp);font-weight:700;font-size:18px;margin-bottom:9px}
.flow-c p{color:var(--muted);font-size:14.5px;line-height:1.8}
.flow-c .more{display:inline-block;margin-top:14px;color:var(--accent);font-size:13px;font-weight:700}

.rc-note{max-width:var(--maxw);margin:60px auto 0;padding:0 24px}
.rc-note .box{background:var(--soft);border-left:4px solid var(--accent);border-radius:var(--radius);padding:26px 30px}
.rc-note .box p{color:var(--ink)}
.rc-note .point-label{display:inline-block;font-family:var(--ff-disp);font-weight:700;font-size:12px;letter-spacing:.18em;color:#fff;background:var(--accent);padding:4px 14px;border-radius:6px;margin-bottom:12px}

/* subpage layout */
.page-main{max-width:840px;margin:0 auto;padding:70px 24px 40px}
.page-head{margin-bottom:46px;padding-bottom:26px;border-bottom:2px solid var(--line)}
.eyebrow{font-family:var(--ff-disp);letter-spacing:.22em;font-size:12px;color:var(--accent);text-transform:uppercase;margin-bottom:14px}
.page-head h1{font-family:var(--ff-disp);font-weight:700;font-size:clamp(27px,4.6vw,42px);line-height:1.4;margin-bottom:16px}
.lead{color:var(--muted);font-size:17px;max-width:64ch}
.block{margin:0 0 40px}
.block h2{font-family:var(--ff-disp);font-weight:700;font-size:clamp(20px,3.2vw,27px);margin-bottom:16px;display:flex;align-items:baseline;gap:12px}
.block h2::before{content:"";width:8px;height:22px;background:var(--accent);border-radius:3px;flex-shrink:0;align-self:center}
.block p{margin-bottom:14px}
.block.has-img{display:grid;grid-template-columns:1.2fr .9fr;gap:34px;align-items:center}
.block-fig img{border-radius:var(--radius);width:100%;aspect-ratio:4/3;object-fit:cover;box-shadow:0 18px 40px -24px rgba(0,0,0,.4)}
@media(max-width:760px){.block.has-img{grid-template-columns:1fr;gap:20px}}

/* page nav (prev/next between subpages) */
.page-nav{max-width:840px;margin:20px auto 0;padding:0 24px 10px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.page-nav a{flex:1;min-width:200px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;transition:.25s}
.page-nav a:hover{border-color:var(--accent);transform:translateY(-3px)}
.page-nav small{color:var(--muted);font-size:12px;display:block;margin-bottom:4px}
.page-nav span{font-family:var(--ff-disp);font-weight:700;color:var(--ink)}
.page-nav .nx{text-align:right}

/* faq */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;text-align:left;background:none;border:none;cursor:pointer;font:inherit;font-family:var(--ff-disp);font-weight:700;color:var(--ink);padding:20px 44px 20px 0;position:relative;display:block}
.faq-mark{position:absolute;right:6px;top:50%;width:14px;height:14px;transform:translateY(-50%)}
.faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--accent);transition:.3s}
.faq-mark::before{top:6px;left:0;width:14px;height:2px}
.faq-mark::after{top:0;left:6px;width:2px;height:14px}
.faq-item.open .faq-mark::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 0 20px;color:var(--muted)}

/* sitemap — list format */
.sitemap-list{border-top:1px solid var(--line)}
.sitemap-list li{border-bottom:1px solid var(--line)}
.sitemap-list a{display:grid;grid-template-columns:auto 1fr;gap:4px 20px;padding:24px 8px;transition:.2s;align-items:baseline}
.sitemap-list a:hover{background:var(--soft);padding-left:16px}
.sitemap-list .nm{font-family:var(--ff-disp);font-weight:700;font-size:18px;color:var(--ink);grid-column:1}
.sitemap-list .nm::after{content:"›";color:var(--accent);margin-left:10px;font-weight:700}
.sitemap-list .ds{grid-column:2;grid-row:1;color:var(--muted);font-size:14.5px;line-height:1.75}
@media(max-width:600px){.sitemap-list a{grid-template-columns:1fr}.sitemap-list .ds{grid-column:1;grid-row:auto}}

/* footer */
.site-footer{background:var(--foot-bg);color:var(--foot-fg);margin-top:80px}
.site-footer ul{list-style:none}
.site-footer a{color:inherit;opacity:.82;transition:.2s}
.site-footer a:hover{opacity:1;color:#57d6c6}
.ft-top{border-bottom:1px solid rgba(255,255,255,.1)}
.ft-top p{max-width:var(--maxw);margin:0 auto;padding:34px 24px;font-family:var(--ff-disp);font-weight:700;font-size:clamp(17px,2.8vw,24px);color:#eafaf7}
.ft-in{max-width:var(--maxw);margin:0 auto;padding:42px 24px 20px;display:grid;grid-template-columns:1.4fr 1fr;gap:34px;align-items:start}
.ft-name{font-family:var(--ff-disp);font-weight:700;font-size:21px;margin-bottom:10px}
.ft-tag{opacity:.68;font-size:14px}
.ft-nav ul{display:grid;grid-template-columns:1fr 1fr;gap:10px 24px;font-size:14px}
.ft-copy{font-size:12px;opacity:.55;text-align:center;padding:18px;border-top:1px solid rgba(255,255,255,.1)}
@media(max-width:760px){.ft-in{grid-template-columns:1fr;gap:24px}}

/* to top + reveal + burger */
.to-top{position:fixed;right:20px;bottom:20px;width:46px;height:46px;border-radius:12px;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;opacity:0;pointer-events:none;transform:translateY(12px);transition:.3s;z-index:60;box-shadow:0 8px 20px -8px rgba(0,0,0,.5)}
.to-top.show{opacity:1;pointer-events:auto;transform:none}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.burger{display:none;width:42px;height:42px;background:none;border:none;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;padding:8px}
.burger span{display:block;height:2px;background:var(--ink);transition:.3s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer{display:none}
@media(max-width:860px){
  .tb-nav{display:none}
  .burger{display:flex}
  .drawer.open{display:block;border-top:1px solid var(--line);background:var(--bg)}
  .drawer.open ul{flex-direction:column;padding:6px 24px 14px}
  .drawer.open li{padding:11px 0;border-top:1px solid var(--line)}
  .drawer.open li:first-child{border-top:none}
  .flow-grid{grid-template-columns:1fr}
}