:root{
  --green:#1f6f54;
  --green-dark:#0e4d3a;
  --green-light:#e4f0ea;
  --ink:#1b2420;
  --muted:#5d6b64;
  --line:#dfe6e2;
  --bg:#ffffff;
  --bg-soft:#f5f9f7;
  --accent:#f2a900;
  --radius:14px;
  --max:1120px;
  --shadow:0 10px 30px rgba(14,77,58,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:"Yu Gothic","Hiragino Kaku Gothic ProN","Noto Sans JP",system-ui,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased;
}
a{color:var(--green);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--green-dark);text-decoration:none}
.brand .mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--green),var(--green-dark));display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:15px;font-weight:800}
.brand small{display:block;font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.04em}
.nav-links{display:flex;gap:22px;align-items:center;list-style:none;margin:0;padding:0;font-size:14px;font-weight:600}
.nav-links a{color:var(--ink)}
.btn{display:inline-block;background:var(--green);color:#fff !important;padding:11px 20px;border-radius:999px;font-weight:700;font-size:14px;text-decoration:none !important;box-shadow:var(--shadow);transition:.2s}
.btn:hover{background:var(--green-dark);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--green) !important;border:1.5px solid var(--green);box-shadow:none}
.btn-ghost:hover{background:var(--green-light)}

/* hero */
.hero{background:linear-gradient(160deg,#0e4d3a 0%,#1f6f54 60%,#2f8a6a 100%);color:#fff;padding:78px 0 86px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:380px;height:380px;background:radial-gradient(circle,rgba(242,169,0,.25),transparent 70%);border-radius:50%}
.hero .eyebrow{display:inline-block;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);padding:6px 14px;border-radius:999px;font-size:13px;font-weight:700;margin-bottom:20px}
.hero h1{font-size:42px;line-height:1.3;margin:0 0 18px;font-weight:800;max-width:780px}
.hero p.lead{font-size:18px;max-width:640px;opacity:.95;margin:0 0 30px}
.hero .cta-row{display:flex;gap:14px;flex-wrap:wrap}
.hero .stats{display:flex;gap:36px;margin-top:46px;flex-wrap:wrap}
.hero .stats .s b{display:block;font-size:30px;font-weight:800;color:var(--accent)}
.hero .stats .s span{font-size:13px;opacity:.9}

/* sections */
section{padding:64px 0}
section.soft{background:var(--bg-soft)}
.section-head{max-width:720px;margin:0 auto 40px;text-align:center}
.section-head .kicker{color:var(--green);font-weight:800;font-size:13px;letter-spacing:.08em;text-transform:uppercase}
.section-head h2{font-size:30px;margin:8px 0 12px;font-weight:800}
.section-head p{color:var(--muted);margin:0}
h2,h3{color:var(--ink)}

/* cards */
.grid{display:grid;gap:22px}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.2s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:#cfe0d8}
.card .ico{width:46px;height:46px;border-radius:12px;background:var(--green-light);color:var(--green-dark);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px}
.card h3{margin:0 0 8px;font-size:18px}
.card p{margin:0;color:var(--muted);font-size:14.5px}
.card .price{margin-top:14px;font-weight:800;color:var(--green-dark);font-size:15px}

/* answer box (LLMO conclusion-first) */
.answer{background:var(--green-light);border-left:5px solid var(--green);border-radius:0 10px 10px 0;padding:18px 22px;margin:0 0 26px}
.answer b{color:var(--green-dark)}

/* table */
table.data{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px;background:#fff;border-radius:10px;overflow:hidden;border:1px solid var(--line)}
table.data th{background:var(--green);color:#fff;text-align:left;padding:12px 14px;font-weight:700}
table.data td{padding:11px 14px;border-top:1px solid var(--line)}
table.data tr:nth-child(even) td{background:var(--bg-soft)}

/* faq */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:14px;overflow:hidden}
.faq-item summary{cursor:pointer;padding:18px 22px;font-weight:700;font-size:16px;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"＋";color:var(--green);font-weight:800}
.faq-item[open] summary::after{content:"−"}
.faq-item .body{padding:0 22px 20px;color:var(--muted)}

/* region grid */
.region-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}
.region-grid a{display:block;text-align:center;padding:12px 6px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);font-weight:600;font-size:14px;transition:.15s}
.region-grid a:hover{background:var(--green);color:#fff;text-decoration:none;border-color:var(--green)}
.region-grid a.ready{border-color:var(--green);box-shadow:0 0 0 1px var(--green) inset}

/* breadcrumb */
.crumb{font-size:13px;color:var(--muted);padding:16px 0}
.crumb a{color:var(--muted)}

/* steps */
.steps{counter-reset:step;display:grid;gap:16px}
.step{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 20px}
.step::before{counter-increment:step;content:counter(step);flex:0 0 auto;width:34px;height:34px;border-radius:50%;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.step h4{margin:0 0 4px;font-size:16px}
.step p{margin:0;color:var(--muted);font-size:14px}

/* cta band */
.cta-band{background:linear-gradient(135deg,var(--green-dark),var(--green));color:#fff;border-radius:18px;padding:46px;text-align:center;margin:8px 0}
.cta-band h2{color:#fff;font-size:28px;margin:0 0 10px}
.cta-band p{opacity:.92;margin:0 0 24px}

/* footer */
.site-footer{background:var(--ink);color:#cfd8d3;padding:50px 0 30px;font-size:14px}
.site-footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.site-footer h4{color:#fff;font-size:14px;margin:0 0 14px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer ul li{margin-bottom:8px}
.site-footer a{color:#cfd8d3}
.site-footer .legal{border-top:1px solid #2c3a34;padding-top:20px;color:#8c9b94;font-size:12.5px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.note{font-size:12.5px;color:var(--muted);background:#fff8e6;border:1px dashed var(--accent);border-radius:10px;padding:10px 14px;margin:20px 0}

@media(max-width:900px){
  .grid.cols-4{grid-template-columns:repeat(2,1fr)}
  .grid.cols-3{grid-template-columns:repeat(2,1fr)}
  .region-grid{grid-template-columns:repeat(4,1fr)}
  .site-footer .cols{grid-template-columns:1fr 1fr}
  .hero h1{font-size:32px}
  .nav-links{display:none}
}
@media(max-width:560px){
  .grid.cols-4,.grid.cols-2,.grid.cols-3{grid-template-columns:1fr}
  .region-grid{grid-template-columns:repeat(3,1fr)}
}