:root{
  --ink:#1F2933; --sub:#5B6670; --navy:#15263B; --navy2:#22395A;
  --orange:#E8772E; --orange-l:#FDF0E6; --bg:#F6F5F2; --paper:#FFFFFF; --line:#E3E0DA;
  --green:#06C755; --r:12px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans JP",sans-serif;color:var(--ink);background:var(--bg);line-height:1.95;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--navy2)}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
.narrow{max-width:760px;margin:0 auto;padding:0 20px}
.en{display:block;font-size:12px;letter-spacing:.22em;color:var(--orange);font-weight:700;margin-bottom:6px}
h2{font-size:clamp(23px,4vw,32px);line-height:1.5;color:var(--navy);margin-bottom:14px;font-weight:900}
section{padding:80px 0}
.center{text-align:center}
.lead{color:var(--sub);margin-bottom:34px}

/* header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:62px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy)}
.brand .mark{width:34px;height:34px;border-radius:8px;background:var(--navy);display:flex;align-items:center;justify-content:center}
.brand b{font-size:17px;font-weight:900;letter-spacing:.02em}
.brand small{display:block;font-size:11px;color:var(--sub);font-weight:400;line-height:1.2}
nav{display:flex;gap:22px;align-items:center}
nav a{text-decoration:none;color:var(--ink);font-size:14px;font-weight:500}
nav a:hover{color:var(--orange)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;font-weight:700;border-radius:999px;padding:15px 28px;transition:transform .15s,box-shadow .15s;line-height:1.4;text-align:center}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.14)}
.btn-line{background:var(--green);color:#fff}
.btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.7)}
.btn-navy{background:var(--navy);color:#fff}
.btn-sm{padding:9px 18px;font-size:14px}
.cta-row{display:flex;flex-wrap:wrap;gap:14px}

/* hero */
.hero{background:var(--navy);color:#fff;position:relative;overflow:hidden;padding:0}
.hero::before{content:"";position:absolute;right:-120px;top:-120px;width:520px;height:520px;border-radius:50%;border:60px solid rgba(232,119,46,.12)}
.hero::after{content:"";position:absolute;right:120px;bottom:-160px;width:300px;height:300px;border-radius:50%;border:30px solid rgba(255,255,255,.05)}
.hero .wrap{position:relative;z-index:1;padding-top:92px;padding-bottom:96px}
.hero .tag{display:inline-block;background:var(--orange);color:#fff;font-weight:700;font-size:13px;padding:4px 14px;border-radius:4px;margin-bottom:22px}
.hero h1{font-size:clamp(30px,5.6vw,50px);line-height:1.45;font-weight:900;margin-bottom:22px}
.hero h1 em{font-style:normal;color:var(--orange)}
.hero p.sub{max-width:600px;opacity:.92;margin-bottom:34px;font-size:clamp(15px,2.1vw,17px)}
.hero .note{margin-top:18px;font-size:13px;opacity:.7}

/* problem */
.problem{background:var(--paper)}
.q-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:14px}
.q-list li{list-style:none;background:var(--bg);border-left:4px solid var(--orange);border-radius:0 var(--r) var(--r) 0;padding:16px 20px;font-weight:500}
.problem .bridge{margin-top:34px;text-align:center;font-size:17px}
.problem .bridge b{color:var(--orange)}

/* on-site support */
.support{background:var(--navy);color:#fff}
.support h2{color:#fff}
.support .lead{color:rgba(255,255,255,.8)}
.support-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.s-item{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--r);padding:28px 24px}
.s-no{width:40px;height:40px;border-radius:50%;background:var(--orange);color:#fff;font-weight:900;font-size:18px;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.s-item h3{font-size:18px;line-height:1.5;margin-bottom:10px}
.s-item p{font-size:15px;color:rgba(255,255,255,.82)}
.support-note{margin-top:22px;text-align:center;font-size:13px;color:rgba(255,255,255,.65)}

/* learn cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:22px}
.card{background:var(--paper);border-radius:var(--r);overflow:hidden;text-decoration:none;color:inherit;border:1px solid var(--line);display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(0,0,0,.08)}
.card .top{background:var(--navy2);color:#fff;padding:22px 24px}
.card .top .no{font-size:12px;letter-spacing:.2em;color:var(--orange);font-weight:700}
.card .top h3{font-size:19px;line-height:1.5;margin-top:4px}
.card .body{padding:20px 24px 24px;flex:1;display:flex;flex-direction:column}
.card .body p{color:var(--sub);font-size:15px;flex:1}
.card .more{margin-top:14px;font-weight:700;color:var(--orange);font-size:14px}

/* guide */
.guide{background:var(--orange-l)}
.guide-box{display:grid;grid-template-columns:260px 1fr;gap:40px;align-items:center}
.book{aspect-ratio:3/4;background:var(--navy);border-radius:6px 14px 14px 6px;box-shadow:12px 14px 0 rgba(21,38,59,.15);color:#fff;padding:26px 22px;display:flex;flex-direction:column;justify-content:space-between;border-left:10px solid var(--orange)}
.book small{font-size:12px;color:var(--orange);font-weight:700;letter-spacing:.1em}
.book strong{font-size:22px;line-height:1.5}
.book span{font-size:12px;opacity:.7}
.guide ul{list-style:none;margin:16px 0 26px}
.guide li{padding:6px 0 6px 28px;position:relative}
.guide li::before{content:"✓";position:absolute;left:4px;color:var(--orange);font-weight:900}

/* seminar */
.seminar-box{background:var(--paper);border-radius:var(--r);border:2px solid var(--navy);padding:34px 30px;display:grid;grid-template-columns:1.3fr 1fr;gap:30px;align-items:center}
.seminar-box dl{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-size:15px}
.seminar-box dt{font-weight:700;color:var(--navy)}

/* about */
.about{background:var(--paper)}
.about-box{display:grid;grid-template-columns:200px 1fr;gap:34px;align-items:center}
.about-box img{width:200px;aspect-ratio:1;object-fit:cover;border-radius:50%;border:4px solid var(--orange-l)}
.about-box h3{font-size:20px;color:var(--navy)}
.about-box .role{color:var(--orange);font-weight:700;font-size:14px;margin-bottom:10px}
.about-box p{color:var(--sub);font-size:15px}

/* article */
.article-hero{background:var(--navy);color:#fff;padding:64px 0 56px}
.article-hero .crumb{font-size:13px;opacity:.7;margin-bottom:12px}
.article-hero .crumb a{color:#fff}
.article-hero h1{font-size:clamp(26px,4.6vw,38px);line-height:1.5;font-weight:900}
.article-hero p{margin-top:14px;opacity:.88}
.article{background:var(--paper);padding:56px 0 72px}
.article h2{font-size:clamp(21px,3.4vw,26px);margin:48px 0 14px;padding-left:14px;border-left:5px solid var(--orange)}
.article h2:first-child{margin-top:0}
.article h3{font-size:18px;color:var(--navy);margin:28px 0 8px}
.article p{margin-bottom:16px}
.article ul,.article ol{margin:0 0 18px 1.4em}
.article li{margin-bottom:6px}
.point{background:var(--orange-l);border-radius:var(--r);padding:20px 22px;margin:22px 0}
.point b{color:var(--orange)}
.memo{background:var(--bg);border:1px dashed #C9C3B8;border-radius:var(--r);padding:16px 20px;font-size:14px;color:var(--sub);margin:18px 0}
table.t{width:100%;border-collapse:collapse;margin:16px 0 22px;font-size:15px}
table.t th,table.t td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
table.t th{background:var(--bg);color:var(--navy);white-space:nowrap}
.todo{background:#FFF3B0;padding:0 4px;border-radius:3px;font-weight:700}
.article-cta{margin-top:50px;background:var(--navy);color:#fff;border-radius:var(--r);padding:30px;text-align:center}
.article-cta p{margin-bottom:18px}
.next-links{display:grid;gap:10px;margin-top:30px}
.next-links a{display:block;background:var(--bg);border-radius:10px;padding:14px 18px;text-decoration:none;font-weight:700}

/* faq */
details{background:var(--paper);border:1px solid var(--line);border-radius:10px;margin-bottom:10px}
summary{cursor:pointer;padding:16px 46px 16px 20px;font-weight:700;color:var(--navy);list-style:none;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"＋";position:absolute;right:18px;top:16px;color:var(--orange)}
details[open] summary::after{content:"－"}
details .a{padding:0 20px 18px}

footer{background:#0E1A2A;color:rgba(255,255,255,.7);font-size:13px;padding:36px 0 96px;text-align:center;line-height:2}
footer b{color:#fff}

.fixbar{display:none}
@media (max-width:760px){
  section{padding:60px 0}
  nav{display:none}
  .brand small{display:none}
  .brand b{font-size:16px}
  table.t{font-size:13px}
  table.t th,table.t td{padding:8px 6px}
  .guide-box,.seminar-box,.about-box{grid-template-columns:1fr}
  .book{max-width:220px;margin:0 auto}
  .about-box{text-align:center}
  .about-box img{margin:0 auto;width:150px}
  .fixbar{display:block;position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--green);text-align:center;box-shadow:0 -4px 14px rgba(0,0,0,.15)}
  .fixbar a{display:block;color:#fff;font-weight:700;text-decoration:none;padding:15px}
}