:root {
    --brand-blue: #1b2838;
    --brand-blue-light: #2c3e50;
    --brand-green: #00B900;
    --brand-green-hover: #009900;
    --bg-main: #f4f6f8;
    --bg-white: #ffffff;
    --text-main: #333333;
    --text-muted: #666666;
    --border: #e1e4e8;
    --support-bg: #eaf2f8;
    --support-text: #2980b9;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: "Noto Sans JP", "Helvetica Neue", sans-serif; }
body { background: var(--bg-main); color: var(--text-main); line-height: 1.6; }
a { text-decoration: none; color: inherit; }

/* 1. Header Navigation */
header { background: var(--bg-white); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.header-container { max-width: 1100px; margin: 0 auto; height: 72px; display: flex; justify-content: space-between; align-items: center; padding: 0 20px; }
.logo { font-size: 24px; font-weight: 900; color: var(--brand-blue); display: flex; align-items: center; gap: 8px; letter-spacing: -0.5px; }
.logo span { color: var(--text-muted); font-size: 14px; font-weight: normal; margin-left: 5px; border-left: 1px solid #ccc; padding-left: 10px;}
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a { font-size: 14px; font-weight: bold; color: var(--text-main); transition: 0.2s; }
.nav-links a:hover { color: var(--brand-green); }
.support-link { color: var(--support-text) !important; display: flex; align-items: center; gap: 5px; }
.support-link::before { content: '？'; display: inline-block; background: var(--support-text); color: #fff; border-radius: 50%; width: 16px; height: 16px; text-align: center; line-height: 16px; font-size: 11px; }

/* 2. Main Visual - Login & Quick Support */
.hero-bg { background: var(--brand-blue); padding: 60px 20px; }
.hero-grid { max-width: 1000px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: start; }

/* Mock Login Box */
.login-box { background: var(--bg-white); border-radius: 8px; padding: 40px; box-shadow: 0 10px 30px rgba(0,0,0,0.2); }
.login-box h2 { font-size: 24px; color: var(--brand-blue); margin-bottom: 20px; text-align: center; }
.input-group { margin-bottom: 15px; }
.input-mock { background: var(--bg-main); border: 1px solid var(--border); padding: 12px; border-radius: 4px; color: #999; font-size: 14px; }
.btn-login { display: block; background: var(--brand-green); color: var(--bg-white); text-align: center; padding: 14px; border-radius: 4px; font-weight: bold; font-size: 16px; margin-top: 20px; transition: 0.3s; }
.btn-login:hover { background: var(--brand-green-hover); }

/* Quick Support Box */
.support-box-hero { background: var(--support-bg); border-radius: 8px; padding: 40px; border: 1px solid #c9e1f5; }
.support-box-hero h3 { font-size: 20px; color: var(--support-text); margin-bottom: 20px; display: flex; align-items: center; gap: 8px; }
.support-box-hero p { font-size: 14px; color: var(--text-main); margin-bottom: 20px; line-height: 1.5; }
.q-links { list-style: none; }
.q-links li { margin-bottom: 10px; }
.q-links li a { display: block; background: var(--bg-white); padding: 12px 15px; border-radius: 4px; font-size: 14px; color: var(--support-text); font-weight: bold; border: 1px solid #c9e1f5; transition: 0.2s; position: relative; }
.q-links li a::after { content: '→'; position: absolute; right: 15px; }
.q-links li a:hover { background: var(--brand-blue); color: var(--bg-white); border-color: var(--brand-blue); }

/* 3. Category Navigation */
.section { max-width: 1100px; margin: 80px auto; padding: 0 20px; }
.sec-title { font-size: 24px; margin-bottom: 30px; font-weight: bold; color: var(--brand-blue); border-bottom: 2px solid var(--border); padding-bottom: 10px; }
.cat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.cat-item { background: var(--bg-white); border: 1px solid var(--border); border-radius: 8px; padding: 25px; text-align: left; transition: 0.3s; }
.cat-item:hover { border-color: var(--brand-blue); box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
.cat-item h4 { font-size: 16px; margin-bottom: 10px; color: var(--brand-blue); display: flex; align-items: center; justify-content: space-between; }
.cat-item h4::after { content: '>'; color: #ccc; }
.cat-item p { font-size: 13px; color: var(--text-muted); }

/* 4. Announcement Area */
.news-container { background: var(--bg-white); border: 1px solid var(--border); border-radius: 8px; padding: 30px; margin-bottom: 80px; }
.news-list { display: flex; flex-direction: column; }
.news-item { display: flex; align-items: center; padding: 15px 0; border-bottom: 1px solid var(--bg-main); gap: 15px; font-size: 14px; }
.news-item:last-child { border-bottom: none; }
.n-date { color: var(--text-muted); min-width: 90px; font-family: monospace; }
.n-tag { padding: 3px 8px; border-radius: 3px; font-size: 11px; font-weight: bold; }
.tag-err { background: #fee; color: #c00; border: 1px solid #fcc; }
.tag-info { background: #eef; color: #00c; border: 1px solid #ccf; }
.n-title { font-weight: 500; transition: 0.2s; }
.news-item:hover .n-title { color: var(--support-text); text-decoration: underline; }

/* 5. Features / Columns Area */
.col-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }
.col-card { background: var(--bg-white); border-radius: 8px; overflow: hidden; border: 1px solid var(--border); }
.col-img { height: 180px; }
.col-img img { width: 100%; height: 100%; object-fit: cover; }
.col-text { padding: 20px; }
.col-text h5 { font-size: 16px; margin-bottom: 10px; color: var(--brand-blue); }
.col-text p { font-size: 13px; color: var(--text-muted); }

/* 6. Help Center & 7. Official Account */
.bottom-wrap { display: flex; gap: 30px; flex-wrap: wrap; margin-top: 80px; margin-bottom: 80px; }
.bt-box { flex: 1; min-width: 320px; background: var(--bg-white); border: 1px solid var(--border); border-radius: 8px; padding: 40px; text-align: center; }
.help-prominent { background: var(--support-bg); border-color: #c9e1f5; }
.help-prominent h3 { color: var(--support-text); font-size: 22px; margin-bottom: 15px; }
.bt-box p { font-size: 14px; color: var(--text-muted); margin-bottom: 20px; }
.btn-action { display: inline-block; padding: 12px 30px; border-radius: 4px; font-weight: bold; font-size: 14px; transition: 0.2s; }
.btn-help { background: var(--support-text); color: var(--bg-white); }
.btn-help:hover { background: #1a5276; }
.sns-list { display: flex; justify-content: center; gap: 10px; }
.sns-btn { border: 1px solid #ccc; padding: 8px 15px; border-radius: 20px; font-size: 12px; font-weight: bold; }
.sns-btn:hover { background: var(--bg-main); }

/* 8. Footer */
footer { background: var(--brand-blue); color: #a9b5c0; padding: 60px 20px 30px; }
.footer-grid { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 40px; margin-bottom: 40px; }
.footer-col h4 { font-size: 15px; color: var(--bg-white); margin-bottom: 20px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 13px; transition: 0.2s; }
.footer-col ul li a:hover { color: var(--bg-white); text-decoration: underline; }
.footer-bottom { max-width: 1100px; margin: 0 auto; border-top: 1px solid #2c3e50; padding-top: 20px; text-align: center; font-size: 12px; }

img{height:auto}
.wrap,.news,.cols,.two,footer{content-visibility:auto;contain-intrinsic-size:auto 520px}