/* ===== RESET & BASE ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Noto Sans JP','Noto Sans SC','Noto Sans KR','Noto Sans Thai','Helvetica Neue',Arial,sans-serif;color:#333;line-height:1.75;background:#FDFBF7}
img{max-width:100%;height:auto;display:block}
a{color:#2D5A3D;text-decoration:none;transition:color .2s}
a:hover{color:#4A7C59}
ul,ol{padding-left:1.4em}

/* ===== VARIABLES ===== */
:root{
  --green:#4A7C59;--green-dark:#2D5A3D;--green-light:#6DB37E;
  --gold:#C4973B;--gold-light:#E8D5A3;
  --bg:#FDFBF7;--bg-alt:#F4F0E8;--bg-card:#fff;
  --text:#333;--text-light:#666;--text-muted:#999;
  --radius:10px;--shadow:0 2px 12px rgba(0,0,0,.08);
  --max-w:1140px;--header-h:64px;
}

/* ===== UTILITY ===== */
.container{max-width:var(--max-w);margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.text-center{text-align:center}

/* ===== HEADER ===== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(253,251,247,.96);backdrop-filter:blur(8px);border-bottom:1px solid rgba(0,0,0,.06);height:var(--header-h)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:16px}
.logo-link{display:flex;align-items:center;flex-shrink:0}
.logo-link img{height:36px;width:auto}
.main-nav{display:flex;align-items:center;gap:8px}
.main-nav a{font-size:.88rem;padding:6px 10px;border-radius:6px;color:var(--text);font-weight:500;white-space:nowrap}
.main-nav a:hover{background:var(--bg-alt);color:var(--green-dark)}
.header-cta{display:inline-flex;align-items:center;gap:6px;background:var(--green);color:#fff!important;padding:8px 18px;border-radius:8px;font-weight:600;font-size:.88rem;white-space:nowrap;transition:background .2s}
.header-cta:hover{background:var(--green-dark);color:#fff}

/* Language switcher */
.lang-switch{position:relative}
.lang-btn{background:none;border:1px solid #ddd;border-radius:6px;padding:5px 10px;font-size:.82rem;cursor:pointer;color:var(--text);display:flex;align-items:center;gap:4px}
.lang-btn::after{content:'▾';font-size:.7rem}
.lang-dropdown{display:none;position:absolute;right:0;top:110%;background:#fff;border:1px solid #ddd;border-radius:8px;box-shadow:var(--shadow);min-width:150px;z-index:200;max-height:320px;overflow-y:auto}
.lang-switch:hover .lang-dropdown,.lang-switch:focus-within .lang-dropdown{display:block}
.lang-dropdown a{display:block;padding:8px 14px;font-size:.84rem;color:var(--text)}
.lang-dropdown a:hover{background:var(--bg-alt)}
.lang-dropdown a.active{font-weight:700;color:var(--green)}

/* Mobile nav */
.nav-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;padding:4px;color:var(--text)}
@media(max-width:900px){
  .main-nav{display:none;position:absolute;top:var(--header-h);left:0;right:0;background:#fff;border-bottom:1px solid #ddd;flex-direction:column;padding:12px 20px;gap:4px;box-shadow:var(--shadow)}
  .main-nav.open{display:flex}
  .nav-toggle{display:block}
  .header-cta{padding:6px 12px;font-size:.82rem}
}

/* ===== HERO ===== */
.hero{background:linear-gradient(135deg,#2D5A3D 0%,#4A7C59 50%,#6DB37E 100%);color:#fff;padding:60px 0 50px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;right:-20%;width:60%;height:200%;background:radial-gradient(ellipse,rgba(255,255,255,.08) 0%,transparent 70%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1fr 380px;gap:40px;align-items:center}
.hero h1{font-size:2.2rem;font-weight:800;line-height:1.3;margin-bottom:16px}
.hero .subtitle{font-size:1.1rem;opacity:.9;margin-bottom:24px;line-height:1.6}
.hero-cta{display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--green-dark);padding:14px 28px;border-radius:var(--radius);font-weight:700;font-size:1rem;transition:transform .2s,box-shadow .2s}
.hero-cta:hover{transform:translateY(-2px);box-shadow:0 4px 20px rgba(0,0,0,.2);color:var(--green-dark)}
.hero-widget{background:rgba(255,255,255,.1);border-radius:var(--radius);padding:16px;backdrop-filter:blur(4px)}
.hero-disclaimer{font-size:.75rem;opacity:.7;margin-top:16px}
.hero-disclaimer a{color:#fff;text-decoration:underline}
@media(max-width:800px){
  .hero-grid{grid-template-columns:1fr;gap:24px}
  .hero h1{font-size:1.6rem}
  .hero{padding:40px 0 36px}
}

/* ===== DISCLAIMER TOOLTIP ===== */
.disclaimer-hint{position:relative;cursor:help;border-bottom:1px dotted rgba(255,255,255,.6);transition:opacity .2s}
.disclaimer-hint:hover{opacity:1}
.disclaimer-hint .tooltip{display:none;position:absolute;bottom:calc(100% + 10px);left:0;background:#fff;color:#222;padding:14px 18px;border-radius:8px;font-size:.84rem;line-height:1.6;width:300px;box-shadow:0 4px 20px rgba(0,0,0,.18);z-index:10;border:1px solid #e0e0e0}
.disclaimer-hint .tooltip::after{content:'';position:absolute;top:100%;left:20px;border:6px solid transparent;border-top-color:#fff}
.disclaimer-hint:hover .tooltip,.disclaimer-hint:focus .tooltip{display:block}

/* ===== SECTIONS ===== */
.section{padding:60px 0}
.section-alt{background:var(--bg-alt)}
.section-title{font-size:1.8rem;font-weight:800;color:var(--green-dark);margin-bottom:12px}
.section-lead{font-size:1.05rem;color:var(--text-light);margin-bottom:36px;max-width:680px}

/* Cards grid */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-4px);box-shadow:0 8px 30px rgba(0,0,0,.12)}
.card-img{width:100%;height:180px;object-fit:cover}
.card-body{padding:20px}
.card-body h3{font-size:1.15rem;margin-bottom:8px;color:var(--green-dark)}
.card-body p{font-size:.92rem;color:var(--text-light);margin-bottom:12px}
.card-link{font-size:.88rem;font-weight:600;color:var(--green);display:inline-flex;align-items:center;gap:4px}
.card-link::after{content:'→'}

/* ===== TABLES ===== */
.table-wrap{overflow-x:auto;margin:20px 0}
table{width:100%;border-collapse:collapse;font-size:.92rem}
th{background:var(--green);color:#fff;padding:12px 16px;text-align:left;font-weight:600}
td{padding:12px 16px;border-bottom:1px solid #eee}
tr:hover td{background:var(--bg-alt)}
.price-highlight{font-weight:700;color:var(--green-dark);font-size:1.05rem}

/* ===== COMPARISON BOX ===== */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-box{border:2px solid #e0e0e0;border-radius:var(--radius);padding:28px;position:relative}
.compare-box.recommended{border-color:var(--green)}
.compare-box.recommended::before{content:'おすすめ';position:absolute;top:-12px;left:20px;background:var(--green);color:#fff;padding:3px 14px;border-radius:20px;font-size:.78rem;font-weight:600}
.compare-box h3{font-size:1.2rem;margin-bottom:8px}
.compare-box .price{font-size:1.6rem;font-weight:800;color:var(--green-dark);margin-bottom:16px}
.compare-box ul{list-style:none;padding:0}
.compare-box li{padding:6px 0;padding-left:24px;position:relative;font-size:.92rem}
.compare-box li::before{content:'✓';position:absolute;left:0;color:var(--green);font-weight:700}
@media(max-width:700px){.compare-grid{grid-template-columns:1fr}}

/* ===== FAQ / ACCORDION ===== */
.faq-item{border-bottom:1px solid #eee;padding:16px 0}
.faq-q{font-weight:700;font-size:1.05rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:var(--green-dark)}
.faq-q::after{content:'+';font-size:1.3rem;transition:transform .2s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding-top:0}
.faq-item.open .faq-a{max-height:1000px;padding-top:12px}
.faq-a p{font-size:.94rem;color:var(--text-light);line-height:1.7}

/* ===== TIPS BOX ===== */
.tip-box{background:linear-gradient(135deg,#f0f7f2,#e8f5e9);border-left:4px solid var(--green);border-radius:0 var(--radius) var(--radius) 0;padding:20px 24px;margin:24px 0}
.tip-box h4{color:var(--green-dark);margin-bottom:8px;font-size:1rem}
.tip-box p,.tip-box li{font-size:.92rem;color:var(--text)}
.warning-box{background:linear-gradient(135deg,#fef8f0,#fef3e0);border-left:4px solid var(--gold);border-radius:0 var(--radius) var(--radius) 0;padding:20px 24px;margin:24px 0}
.warning-box h4{color:#8B6914;margin-bottom:8px}

/* ===== CTA BANNER ===== */
.cta-banner{background:linear-gradient(135deg,var(--green-dark),var(--green));padding:48px 0;text-align:center;color:#fff}
.cta-banner h2{font-size:1.6rem;margin-bottom:12px}
.cta-banner p{opacity:.85;margin-bottom:24px;font-size:1rem}
.cta-banner .btn-cta{background:#fff;color:var(--green-dark);padding:14px 32px;border-radius:var(--radius);font-weight:700;font-size:1rem;display:inline-flex;align-items:center;gap:8px;transition:transform .2s}
.cta-banner .btn-cta:hover{transform:translateY(-2px)}

/* ===== BREADCRUMB ===== */
.breadcrumb{padding:12px 0;font-size:.82rem;color:var(--text-muted)}
.breadcrumb a{color:var(--text-light)}
.breadcrumb span{margin:0 6px;color:#ccc}

/* ===== ARTICLE CONTENT ===== */
.article{padding:48px 0}
.article-body{max-width:780px}
.article-body h1{font-size:2rem;font-weight:800;color:var(--green-dark);margin-bottom:16px;line-height:1.3}
.article-body h2{font-size:1.5rem;font-weight:700;color:var(--green-dark);margin-top:40px;margin-bottom:16px;padding-bottom:8px;border-bottom:2px solid var(--bg-alt)}
.article-body h3{font-size:1.2rem;font-weight:600;color:#444;margin-top:28px;margin-bottom:12px}
.article-body p{margin-bottom:16px;font-size:.96rem;color:var(--text)}
.article-body ul,.article-body ol{margin-bottom:16px}
.article-body li{margin-bottom:6px;font-size:.94rem}
.article-body img{border-radius:var(--radius);margin:24px 0}
.article-body blockquote{border-left:3px solid var(--green-light);padding:12px 20px;margin:20px 0;background:var(--bg-alt);border-radius:0 var(--radius) var(--radius) 0;font-style:italic;color:var(--text-light)}
.article-sidebar{position:sticky;top:calc(var(--header-h) + 20px)}
.toc{background:var(--bg-card);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.toc h4{font-size:.9rem;font-weight:700;margin-bottom:12px;color:var(--green-dark)}
.toc a{display:block;padding:4px 0;font-size:.84rem;color:var(--text-light)}
.toc a:hover{color:var(--green)}
.article-layout{display:grid;grid-template-columns:1fr 260px;gap:40px}
@media(max-width:900px){.article-layout{grid-template-columns:1fr}.article-sidebar{display:none}}

/* ===== STEP LIST ===== */
.steps-list{display:flex;flex-direction:column;gap:28px;margin:24px 0}
.step-item{display:grid;grid-template-columns:80px 1fr;gap:16px;align-items:start}
.step-number{background:var(--green-dark);color:#fff;font-size:.8rem;font-weight:700;text-align:center;padding:8px 0;border-radius:var(--radius);letter-spacing:.05em;line-height:1.4}
.step-content h3{margin-top:0;color:var(--green-dark)}
@media(max-width:600px){.step-item{grid-template-columns:1fr}.step-number{width:80px}}

/* ===== FOOTER ===== */
.site-footer{background:#1a2e22;color:rgba(255,255,255,.7);padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-grid h4{color:#fff;font-size:.92rem;margin-bottom:12px}
.footer-grid a{color:rgba(255,255,255,.6);font-size:.86rem;display:block;padding:3px 0}
.footer-grid a:hover{color:#fff}
.footer-about p{font-size:.86rem;line-height:1.6;margin-bottom:12px}
.footer-disclaimer{background:rgba(255,255,255,.05);border-radius:8px;padding:16px 20px;font-size:.78rem;line-height:1.6;color:rgba(255,255,255,.45);margin-bottom:24px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:20px;display:flex;justify-content:space-between;align-items:center;font-size:.8rem;flex-wrap:wrap;gap:8px}
@media(max-width:700px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
}
@media(max-width:480px){
  .footer-grid{grid-template-columns:1fr}
}

/* ===== SCHEMA / STRUCTURED DATA VISIBILITY ===== */
[itemscope] [itemprop]{/* no visual change, just semantic */}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.animate-in{animation:fadeInUp .5s ease forwards}

/* ===== PRINT ===== */
@media print{
  .site-header,.site-footer,.cta-banner,.hero-widget,.header-cta,.lang-switch{display:none}
  body{background:#fff;color:#000}
  .article-body{max-width:100%}
}