/* ===== 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','Helvetica Neue',Arial,sans-serif;color:#1a1a2e;line-height:1.7;background:#fafbfc}
img{max-width:100%;height:auto;display:block}
a{color:#5c4d9a;text-decoration:none;transition:color .2s}
a:hover{color:#ff7043}
ul,ol{padding-left:1.25em}

/* ===== TYPOGRAPHY ===== */
h1{font-size:2.25rem;line-height:1.2;font-weight:800;margin-bottom:.75rem}
h2{font-size:1.6rem;line-height:1.3;font-weight:700;margin:2rem 0 .75rem;color:#1a237e}
h3{font-size:1.2rem;line-height:1.4;font-weight:600;margin:1.5rem 0 .5rem;color:#33336a}
p{margin-bottom:1rem;max-width:72ch}

/* ===== LAYOUT ===== */
.container{max-width:1140px;margin:0 auto;padding:0 1.25rem}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:2rem}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}

/* ===== HEADER ===== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-bottom:1px solid #e8e8f0;padding:.6rem 0}
.header-inner{display:flex;align-items:center;justify-content:space-between;max-width:1140px;margin:0 auto;padding:0 1.25rem}
.logo{display:flex;align-items:center;gap:.5rem;font-weight:700;font-size:1.1rem;color:#1a237e}
.logo img{height:36px;width:auto}
.main-nav{display:flex;align-items:center;gap:1.5rem}
.main-nav a{font-size:.9rem;font-weight:500;color:#33336a;white-space:nowrap}
.main-nav a:hover{color:#ff7043}

/* Language Switcher */
.lang-switcher{position:relative}
.lang-btn{background:none;border:1px solid #d0d0e0;border-radius:6px;padding:.35rem .7rem;font-size:.8rem;cursor:pointer;display:flex;align-items:center;gap:.3rem;color:#33336a;font-weight:500}
.lang-btn:hover{border-color:#5c4d9a}
.lang-dropdown{display:none;position:absolute;right:0;top:110%;background:#fff;border:1px solid #e0e0e8;border-radius:8px;box-shadow:0 8px 24px rgba(0,0,0,.12);min-width:150px;z-index:200;overflow:hidden}
.lang-dropdown.open{display:block}
.lang-dropdown a{display:block;padding:.5rem .85rem;font-size:.82rem;color:#33336a;border-bottom:1px solid #f0f0f5}
.lang-dropdown a:last-child{border-bottom:none}
.lang-dropdown a:hover{background:#f4f0ff;color:#5c4d9a}

/* Header CTA */
.header-cta{display:inline-flex;align-items:center;gap:.4rem;background:linear-gradient(135deg,#ff7043,#ff5722);color:#fff!important;padding:.5rem 1.1rem;border-radius:8px;font-size:.85rem;font-weight:600;white-space:nowrap;transition:transform .15s,box-shadow .15s}
.header-cta:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(255,87,34,.3);color:#fff!important}

/* Mobile menu */
.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:.5rem}
.menu-toggle span{display:block;width:22px;height:2px;background:#1a237e;margin:5px 0;transition:.3s}

/* ===== HERO ===== */
.hero{position:relative;background:linear-gradient(135deg,#1a237e 0%,#5c4d9a 60%,#7e57c2 100%);color:#fff;padding:4rem 0 3rem;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:url('../images/1_mt_fuji.jpg') center/cover;opacity:.18}
.hero-content{position:relative;z-index:2;max-width:1140px;margin:0 auto;padding:0 1.25rem}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem;align-items:center}
.hero h1{font-size:2.6rem;line-height:1.15;color:#fff;margin-bottom:.5rem}
.hero .subtitle{font-size:1.1rem;opacity:.9;margin-bottom:1.5rem;max-width:500px}
.hero .disclaimer-mini{font-size:.7rem;opacity:.55;margin-top:.75rem}
.hero .disclaimer-mini a{color:rgba(255,255,255,.7)}
.hero-widget{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);border-radius:12px;padding:1.25rem;backdrop-filter:blur(4px)}

/* CTA Buttons */
.btn-primary{display:inline-flex;align-items:center;gap:.5rem;background:linear-gradient(135deg,#ff7043,#ff5722);color:#fff!important;padding:.85rem 1.8rem;border-radius:10px;font-size:1rem;font-weight:700;border:none;cursor:pointer;transition:transform .15s,box-shadow .15s;text-align:center}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(255,87,34,.35);color:#fff!important}
.btn-secondary{display:inline-flex;align-items:center;gap:.5rem;background:transparent;color:#5c4d9a;border:2px solid #5c4d9a;padding:.75rem 1.5rem;border-radius:10px;font-size:.95rem;font-weight:600;cursor:pointer;transition:.2s}
.btn-secondary:hover{background:#5c4d9a;color:#fff}

/* ===== WIDGET SECTION ===== */
.widget-section{background:#f4f0ff;padding:2.5rem 0;border-bottom:1px solid #e8e0f8}
.widget-section h2{text-align:center;margin-bottom:1.5rem}

/* ===== CONTENT ===== */
.content-section{padding:3rem 0}
.content-section:nth-child(even){background:#fff}
.content-section h2{position:relative;padding-bottom:.5rem}
.content-section h2::after{content:'';position:absolute;left:0;bottom:0;width:50px;height:3px;background:linear-gradient(90deg,#ff7043,#ff5722);border-radius:2px}

/* Info Cards */
.info-card{background:#fff;border:1px solid #e8e8f0;border-radius:12px;padding:1.5rem;transition:box-shadow .2s}
.info-card:hover{box-shadow:0 4px 16px rgba(0,0,0,.08)}
.info-card h3{color:#1a237e;margin-top:0}
.info-card .price{font-size:1.3rem;font-weight:700;color:#ff5722}

/* Quick Summary Table */
.quick-table{width:100%;border-collapse:collapse;margin:1.5rem 0;border-radius:8px;overflow:hidden}
.quick-table th{background:#1a237e;color:#fff;padding:.75rem 1rem;text-align:left;font-size:.9rem}
.quick-table td{padding:.7rem 1rem;border-bottom:1px solid #e8e8f0;font-size:.9rem}
.quick-table tr:nth-child(even){background:#f8f7fc}
.quick-table tr:hover{background:#f0ecff}

/* Comparison Table */
.comparison-table{width:100%;border-collapse:collapse;margin:1.5rem 0}
.comparison-table th{background:#5c4d9a;color:#fff;padding:.75rem;text-align:center;font-size:.85rem}
.comparison-table td{padding:.7rem;border:1px solid #e8e8f0;text-align:center;font-size:.85rem}
.comparison-table .feature-name{text-align:left;font-weight:600}
.check{color:#4caf50;font-weight:700}
.cross{color:#ccc}

/* Tips Box */
.tip-box{background:#e8f5e9;border-left:4px solid #4caf50;border-radius:0 8px 8px 0;padding:1rem 1.25rem;margin:1.5rem 0}
.tip-box.warning{background:#fff3e0;border-left-color:#ff9800}
.tip-box.info{background:#e3f2fd;border-left-color:#2196f3}
.tip-box strong{display:block;margin-bottom:.25rem}

/* Expert Opinion */
.expert-box{background:linear-gradient(135deg,#f5f3ff,#ede7f6);border-radius:12px;padding:1.5rem;margin:1.5rem 0;border:1px solid #d1c4e9;position:relative}
.expert-box::before{content:'\201C';font-size:3rem;color:#7e57c2;opacity:.3;position:absolute;top:.25rem;left:.75rem;line-height:1}
.expert-box p{padding-left:1.5rem;font-style:italic;color:#4a148c}
.expert-box .expert-name{font-style:normal;font-weight:600;font-size:.85rem;color:#5c4d9a;margin-top:.5rem}

/* Section Links / Nav Cards */
.nav-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.25rem;margin:2rem 0}
.nav-card{display:flex;align-items:center;gap:1rem;background:#fff;border:1px solid #e8e8f0;border-radius:10px;padding:1rem 1.25rem;transition:all .2s}
.nav-card:hover{border-color:#7e57c2;box-shadow:0 4px 12px rgba(126,87,194,.12);transform:translateY(-2px)}
.nav-card .icon{font-size:1.5rem;width:40px;text-align:center;flex-shrink:0}
.nav-card .nav-card-text h3{font-size:.95rem;margin:0 0 .15rem;color:#1a237e}
.nav-card .nav-card-text p{font-size:.8rem;color:#666;margin:0}

/* ===== FAQ ===== */
.faq-item{border:1px solid #e8e8f0;border-radius:8px;margin-bottom:.75rem;overflow:hidden}
.faq-question{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.25rem;cursor:pointer;font-weight:600;background:#fff;transition:background .2s}
.faq-question:hover{background:#f8f7fc}
.faq-question::after{content:'+';font-size:1.3rem;color:#5c4d9a;transition:transform .2s}
.faq-item.active .faq-question::after{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 1.25rem}
.faq-item.active .faq-answer{max-height:600px;padding:.5rem 1.25rem 1rem}

/* ===== DISCLAIMER ===== */
.disclaimer-tooltip{position:relative;display:inline-flex;align-items:center;gap:.3rem;font-size:.75rem;color:#888;cursor:help;border-bottom:1px dashed #bbb}
.disclaimer-tooltip .tooltip-content{display:none;position:absolute;bottom:130%;left:50%;transform:translateX(-50%);background:#1a1a2e;color:#fff;padding:.75rem 1rem;border-radius:8px;font-size:.72rem;line-height:1.5;width:320px;z-index:50;box-shadow:0 4px 16px rgba(0,0,0,.2)}
.disclaimer-tooltip:hover .tooltip-content{display:block}

/* ===== FOOTER ===== */
.site-footer{background:#1a1a2e;color:#c0c0d0;padding:3rem 0 1.5rem}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2rem;margin-bottom:2rem}
.footer-col h4{color:#fff;font-size:.95rem;margin-bottom:.75rem}
.footer-col a{display:block;color:#a0a0b8;font-size:.85rem;margin-bottom:.4rem}
.footer-col a:hover{color:#ff7043}
.footer-col p{font-size:.83rem;line-height:1.6}
.footer-disclaimer{border-top:1px solid #2a2a3e;padding-top:1rem;font-size:.72rem;color:#777;line-height:1.6;max-width:900px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid #2a2a3e;padding-top:1rem;margin-top:1rem;font-size:.78rem}
.footer-bottom a{color:#a0a0b8}

/* ===== BREADCRUMBS ===== */
.breadcrumbs{padding:.75rem 0;font-size:.82rem;color:#888}
.breadcrumbs a{color:#5c4d9a}
.breadcrumbs span{margin:0 .4rem;color:#ccc}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .grid-3{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .hero h1{font-size:1.8rem}
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero .subtitle{margin:0 auto 1.5rem}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .nav-cards{grid-template-columns:1fr}
  .main-nav{display:none;position:fixed;top:56px;left:0;right:0;bottom:0;background:#fff;flex-direction:column;padding:2rem;gap:1.5rem;z-index:99}
  .main-nav.open{display:flex}
  .menu-toggle{display:block}
  .header-cta{font-size:.8rem;padding:.4rem .8rem}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:.5rem;text-align:center}
  .comparison-table{font-size:.75rem}
  .comparison-table th,.comparison-table td{padding:.5rem .3rem}
  .quick-table{font-size:.8rem}
  h1{font-size:1.7rem}
  h2{font-size:1.3rem}
  .content-section{padding:2rem 0}
}
@media(max-width:480px){
  .hero{padding:2.5rem 0 2rem}
  .hero h1{font-size:1.5rem}
  .btn-primary{padding:.7rem 1.2rem;font-size:.9rem}
  .hero-widget{padding:.75rem}
  .lang-dropdown{right:-1rem}
}