:root{
  --line-brand:#06C755;
  --line-dark:#111111;
  --line-bg:#F5F7FA;
  --line-card:#FFFFFF;
  --sec-blue:#1A365D; /* Security Trust Blue */
  --sec-blue-light:#EBF4FA;
  --text-main:#2C3E50;
  --text-muted:#7F8C8D;
  --border-color:#E1E8ED;
  --shadow-base:0 4px 12px rgba(0,0,0,0.06);
  --shadow-hover:0 12px 24px rgba(26,54,93,0.12);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Hiragino Sans",Meiryo,sans-serif;background:var(--line-bg);color:var(--text-main);line-height:1.7;font-size:15px}
a{text-decoration:none;color:inherit;transition:all 0.3s ease}
img{max-width:100%;height:auto;display:block;border-radius:8px}

/* Header */
.site-header{background:var(--line-card);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100;box-shadow:0 1px 4px rgba(0,0,0,0.03)}
.header-inner{max-width:1200px;margin:0 auto;padding:16px 24px;display:flex;justify-content:space-between;align-items:center}
.site-logo{font-size:24px;font-weight:900;color:var(--sec-blue);display:flex;align-items:center;gap:12px;letter-spacing:-0.5px}
.site-logo::before{content:"";display:block;width:28px;height:28px;background:var(--line-brand);border-radius:6px}
.main-nav{display:flex;gap:24px;overflow-x:auto}
.main-nav a{font-weight:700;font-size:14px;color:var(--text-muted);padding:8px 0;position:relative}
.main-nav a:hover, .main-nav a.active{color:var(--sec-blue)}
.main-nav a.active::after{content:"";position:absolute;bottom:-17px;left:0;width:100%;height:3px;background:var(--sec-blue)}

/* Hero Section (Security & Convenience) */
.hero{background:linear-gradient(135deg, var(--sec-blue) 0%, #2A5298 100%);color:#FFFFFF;padding:80px 24px;overflow:hidden;position:relative}
.hero::after{content:"";position:absolute;top:0;right:0;width:50%;height:100%;background:url('data:image/svg+xml;utf8,<svg opacity="0.05" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path d="M50 0 L100 20 L100 60 L50 100 L0 60 L0 20 Z" fill="%23FFFFFF"/></svg>') no-repeat right center/contain;z-index:1}
.hero-inner{max-width:1200px;margin:0 auto;display:flex;flex-wrap:wrap;align-items:center;gap:60px;position:relative;z-index:2}
.hero-content{flex:1;min-width:320px}
.hero-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 16px;background:rgba(255,255,255,0.1);border:1px solid rgba(255,255,255,0.2);border-radius:30px;font-size:12px;font-weight:700;margin-bottom:24px;letter-spacing:1px}
.hero-badge::before{content:"🔒";font-size:14px}
.hero-title{font-size:clamp(32px, 4vw, 44px);font-weight:900;line-height:1.3;margin-bottom:20px}
.hero-desc{font-size:16px;color:#E2E8F0;margin-bottom:40px;line-height:1.7}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.btn-dl{display:inline-flex;align-items:center;padding:16px 32px;background:var(--line-brand);color:#FFFFFF;font-weight:800;font-size:16px;border-radius:6px;box-shadow:0 8px 16px rgba(6,199,85,0.2)}
.btn-dl:hover{background:#05B34C;transform:translateY(-2px);box-shadow:0 12px 24px rgba(6,199,85,0.3)}
.btn-works{display:inline-flex;align-items:center;padding:16px 32px;background:rgba(255,255,255,0.1);color:#FFFFFF;border:1px solid rgba(255,255,255,0.3);font-weight:700;font-size:15px;border-radius:6px}
.btn-works:hover{background:rgba(255,255,255,0.2)}
.hero-visual{flex:1;min-width:320px}
.hero-visual img{border-radius:12px;box-shadow:0 24px 48px rgba(0,0,0,0.3);border:4px solid rgba(255,255,255,0.1)}

/* Trust/Features Bar */
.trust-bar{background:var(--line-card);border-bottom:1px solid var(--border-color);padding:40px 24px}
.trust-inner{max-width:1200px;margin:0 auto;display:flex;justify-content:space-around;flex-wrap:wrap;gap:32px;text-align:center}
.trust-item{flex:1;min-width:220px}
.trust-icon{font-size:32px;margin-bottom:12px;color:var(--sec-blue)}
.trust-item h4{font-size:17px;font-weight:800;color:var(--sec-blue);margin-bottom:8px}
.trust-item p{font-size:13px;color:var(--text-muted)}

/* Announcements */
.announcement{max-width:1200px;margin:60px auto 0;padding:0 24px}
.ann-card{background:var(--sec-blue-light);border:1px solid #D6E8F5;border-radius:8px;padding:20px 24px;display:flex;align-items:center;gap:20px}
.ann-tag{background:var(--sec-blue);color:#fff;font-size:12px;font-weight:700;padding:4px 12px;border-radius:4px}
.ann-date{font-size:14px;color:var(--sec-blue);font-weight:600}
.ann-title{font-size:15px;font-weight:700;color:var(--sec-blue);flex:1}

/* Main Container */
.container{max-width:1200px;margin:80px auto;padding:0 24px}
.sec-header{text-align:center;margin-bottom:48px}
.sec-header h2{font-size:28px;font-weight:900;color:var(--sec-blue);margin:bottom:16px}
.sec-header p{font-size:15px;color:var(--text-muted)}

/* Categories Grid */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:24px;margin-bottom:80px}
.cat-card{background:var(--line-card);border:1px solid var(--border-color);padding:32px 24px;border-radius:12px;transition:all 0.3s cubic-bezier(0.05, 0.61, 0.41, 0.95)}
.cat-card:hover{box-shadow:var(--shadow-hover);border-color:var(--sec-blue);transform:translateY(-4px)}
.cat-badge{display:inline-block;font-size:11px;font-weight:800;color:var(--sec-blue);background:var(--sec-blue-light);padding:4px 12px;border-radius:20px;margin-bottom:16px}
.cat-card h3{font-size:18px;font-weight:800;margin-bottom:12px;color:var(--text-main)}
.cat-card p{font-size:14px;color:var(--text-muted)}

/* Article Section */
.article-section{background:var(--line-card);border:1px solid var(--border-color);border-radius:16px;padding:60px;display:flex;flex-wrap:wrap;gap:60px;align-items:center;margin-bottom:80px;box-shadow:var(--shadow-base)}
.art-content{flex:1;min-width:320px}
.art-content h3{font-size:26px;font-weight:900;color:var(--sec-blue);margin-bottom:24px;line-height:1.4}
.art-content p{font-size:15px;margin-bottom:16px;color:var(--text-main)}
.art-visual{flex:1;min-width:320px}
.art-visual img{box-shadow:var(--shadow-base);border:1px solid var(--border-color)}

/* Columns */
.col-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:32px;margin-bottom:80px}
.col-card{background:var(--line-card);border-radius:12px;border:1px solid var(--border-color);overflow:hidden;transition:0.3s}
.col-card:hover{box-shadow:var(--shadow-hover)}
.col-card img{width:100%;height:180px;object-fit:cover;border-bottom:1px solid var(--border-color)}
.col-body{padding:24px}
.col-body h4{font-size:18px;font-weight:800;color:var(--sec-blue);margin-bottom:12px}
.col-body p{font-size:14px;color:var(--text-muted)}

/* Support & Official */
.action-panels{display:flex;flex-wrap:wrap;gap:24px;margin-bottom:80px}
.panel-box{flex:1;min-width:300px;background:var(--sec-blue-light);border-radius:12px;padding:48px 32px;text-align:center;border:1px solid #D6E8F5}
.panel-box.official{background:var(--line-card);border:2px dashed var(--border-color)}
.panel-box h3{font-size:22px;font-weight:900;color:var(--sec-blue);margin-bottom:16px}
.panel-box.official h3{color:var(--text-main)}
.panel-box p{font-size:14px;color:var(--text-main);margin-bottom:24px}
.btn-panel{display:inline-block;padding:12px 32px;background:var(--sec-blue);color:#fff;border-radius:6px;font-weight:700;font-size:14px}
.btn-panel:hover{background:#112544}
.btn-outline{display:inline-block;padding:12px 32px;background:#fff;color:var(--text-main);border:1px solid var(--border-color);border-radius:6px;font-weight:700;font-size:14px}
.btn-outline:hover{background:var(--line-bg)}

/* Footer */
.site-footer{background:var(--sec-blue);color:#FFFFFF;padding:60px 24px 40px}
.footer-inner{max-width:1200px;margin:0 auto}
.foot-nav{display:flex;gap:32px;flex-wrap:wrap;margin-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.1);padding-bottom:40px}
.foot-nav a{font-weight:700;font-size:14px;color:#E2E8F0}
.foot-nav a:hover{color:#FFFFFF}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:24px}
.foot-links{display:flex;gap:24px;flex-wrap:wrap}
.foot-links a{color:#A0AEC0;font-size:13px}
.foot-links a:hover{color:#FFFFFF}
.copy{color:#718096;font-size:13px}

@media(max-width:768px){
  .header-inner{flex-direction:column;align-items:flex-start}
  .main-nav{width:100%;padding-top:16px;gap:16px}
  .hero{padding:50px 24px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn-dl, .btn-works{width:100%;justify-content:center}
  .trust-inner{flex-direction:column;gap:40px}
  .ann-card{flex-direction:column;align-items:flex-start;gap:12px}
  .article-section{padding:32px 24px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}
img{height:auto}
.wrap,.news,.cols,.two,footer{content-visibility:auto;contain-intrinsic-size:auto 520px}