:root{
  --green:#6c8b37;
  --green-dark:#4d6528;
  --green-soft:#eff5e5;
  --green-line:#dbe7c3;
  --cream:#faf9f4;
  --text:#223018;
  --muted:#5d6b53;
  --white:#ffffff;
  --shadow:0 18px 45px rgba(47,74,22,.10);
  --radius:22px;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Yu Gothic","Noto Sans JP",sans-serif;color:var(--text);background:linear-gradient(180deg,#fdfdfb 0%,#f7faef 100%);line-height:1.8}
a{color:var(--green-dark);text-decoration:none} a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.container,.wrap{width:min(calc(100% - 32px),var(--max));margin:0 auto}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--green-line)}
.wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
.brand{font-weight:800;letter-spacing:.01em}.brand .small{font-size:.85rem;color:var(--muted);font-weight:600}
.main-nav,.subnav{display:flex;gap:10px 14px;flex-wrap:wrap}
.main-nav a,.subnav a{font-weight:700;font-size:.94rem;padding:8px 12px;border-radius:999px}
.main-nav a:hover,.subnav a:hover,.subnav a.active{background:#dceee3;color:#18382a;text-decoration:none}
.subnav-bar{border-top:1px solid rgba(31,77,55,.08);border-bottom:1px solid rgba(31,77,55,.08);background:#f6faf7}
.subnav-bar .wrap{padding:10px 0}.subnav-label{font-size:.82rem;letter-spacing:.08em;color:#2f6b4d;text-transform:uppercase;font-weight:800;white-space:nowrap;margin-right:12px}
.breadcrumb-bar{background:#fbfcfb;border-bottom:1px solid rgba(31,77,55,.08)}.breadcrumb{font-size:.88rem;color:#5a6f62;padding:12px 0}
.hero{padding:54px 0 34px;background:radial-gradient(circle at top right, rgba(140,183,84,.18), transparent 32%),linear-gradient(180deg,#f7fbef 0%,#ffffff 100%)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:34px;align-items:center}
.eyebrow,.kicker{display:inline-block;padding:7px 12px;border-radius:999px;background:var(--green-soft);color:var(--green-dark);font-weight:800;font-size:.82rem;letter-spacing:.02em}
h1,h2,h3{line-height:1.25;letter-spacing:.01em} h1{font-size:clamp(2rem,4.4vw,3.7rem);margin:14px 0 16px} h2{font-size:clamp(1.55rem,2.7vw,2.35rem);margin:0 0 14px} h3{font-size:1.16rem;margin:0 0 10px}
.lead{font-size:1.08rem;color:#3f4c35}.small{font-size:.92rem;color:var(--muted)}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;margin:24px 0 22px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 22px;border-radius:999px;font-weight:800;border:1px solid var(--green-line);box-shadow:var(--shadow)}
.btn.primary{background:var(--green);color:#fff}.btn.secondary{background:#fff}.btn.ghost{background:transparent;box-shadow:none}
.specs{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}
.spec,.card,.faq-item,.cta-box,.sidebar-card,.info-band,.table-card{background:var(--white);border:1px solid var(--green-line);border-radius:var(--radius);box-shadow:var(--shadow)}
.spec{padding:18px}.spec strong{display:block;font-size:1.08rem}
.hero-visual{position:relative}.hero-main{padding:18px;background:#fff;border:1px solid var(--green-line);border-radius:30px;box-shadow:var(--shadow)}
.hero-main img{border-radius:22px;aspect-ratio:1/1;object-fit:cover}
.floating-card{position:absolute;right:-12px;bottom:-24px;width:min(48%,250px);background:#fff;border:1px solid var(--green-line);border-radius:24px;padding:10px;box-shadow:var(--shadow)}
.floating-card img{border-radius:16px;aspect-ratio:4/5;object-fit:cover}
.section{padding:72px 0}.section.alt{background:var(--cream)}.section-intro{max-width:900px;color:#4d5d42;margin:0 0 26px}
.grid-2,.grid-3,.grid-4{display:grid;gap:22px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}
.card{padding:24px}.icon-num{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--green-soft);color:var(--green-dark);font-weight:900;margin-bottom:14px}
.image-card{overflow:hidden;padding:0}.image-card img{aspect-ratio:4/3;object-fit:cover}.image-card .pad{padding:18px 20px 22px}
.problem-card{padding:24px;background:linear-gradient(180deg,#fff,#f8fbf1)}
.split{display:grid;grid-template-columns:1fr .95fr;gap:30px;align-items:center}
.figure-frame{padding:12px;background:#fff;border:1px solid var(--green-line);border-radius:28px;box-shadow:var(--shadow)}.figure-frame img{border-radius:18px}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:18px;overflow:hidden}th,td{padding:14px 16px;border-bottom:1px solid #e8efd7;text-align:left;vertical-align:top}th{background:#f4f8eb;width:28%}tr:last-child td,tr:last-child th{border-bottom:none}
.check-list,.badge-list{padding-left:1.2rem;margin:0}.check-list li,.badge-list li{margin:8px 0}.check-list li::marker,.badge-list li::marker{color:var(--green)}
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.faq-item{padding:0;overflow:hidden}.faq-item summary{cursor:pointer;list-style:none;padding:20px 22px;font-weight:800}.faq-item summary::-webkit-details-marker{display:none}.faq-item .answer{padding:0 22px 20px;color:#44513a}
.related-list{display:flex;flex-direction:column;gap:10px}
.site-footer{background:#243114;color:#f4f8eb;padding:42px 0 22px;margin-top:30px}.site-footer a{color:#eef6dc}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;gap:26px}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:22px;padding-top:14px;font-size:.88rem;color:#d8e5c0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:28px}.article main{min-width:0}.article main h2{margin-top:32px}.article main h3{margin-top:24px}
.cta-box,.sidebar-card,.info-band,.table-card{padding:22px}.meta-row{display:flex;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:.92rem;margin:10px 0 18px}
.article-links{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:22px}.foot-nav{display:flex;gap:14px;flex-wrap:wrap}.hero-bullets{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:16px}.hero-bullets .mini{background:rgba(255,255,255,.78);border:1px solid var(--green-line);border-radius:18px;padding:12px 14px}
.page-list a{display:block;padding:14px 16px;border:1px solid var(--green-line);border-radius:16px;background:#fff;margin-bottom:10px}
.inline-list{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.tag{display:inline-block;padding:6px 12px;border-radius:999px;background:#eef5df;color:#395121;font-size:.88rem;font-weight:700}
.notice{background:#fffdf6;border:1px solid #ebe3bf;border-radius:18px;padding:16px 18px}
.center{text-align:center}
@media (max-width:980px){.hero-grid,.split,.article-layout,.footer-grid{grid-template-columns:1fr}.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(2,1fr)}.specs{grid-template-columns:1fr}.floating-card{position:static;width:100%;margin-top:14px}.subnav-bar .wrap{flex-direction:column;align-items:flex-start}}
@media (max-width:640px){.grid-2,.grid-3,.grid-4,.faq-grid,.hero-bullets,.article-links{grid-template-columns:1fr}.wrap{padding:12px 0}.section{padding:54px 0}.footer-grid{grid-template-columns:1fr}}

.site-header>.wrap{justify-content:flex-start}
.site-header .brand{padding-right:8px}
.btn.buy{background:#1f4d37;color:#fff;border-color:#1f4d37}
.btn.buy:hover{background:#18382a;text-decoration:none}
.buy-inline{margin-top:18px}
.buy-section{padding:0 0 72px}
.buy-card{background:linear-gradient(180deg,#f7fbef,#ffffff);border:1px solid var(--green-line);border-radius:30px;box-shadow:var(--shadow);padding:32px 28px;text-align:center}
.buy-card p{max-width:760px;margin:10px auto 0;color:#44513a}
.buy-card .cta-row{justify-content:center;margin-bottom:0}
.buy-card.compact{padding:24px 22px;margin-top:26px}
.sidebar-buy{margin-top:18px}
@media (max-width:640px){.buy-section{padding:0 0 54px}}