:root{
  --navy-deep:#0d1b36;
  --navy-mid:#173463;
  --navy-line:#3a5788;
  --blue-pale:#dbe4f3;
  --bg-light:#f5f7fb;
  --white:#ffffff;
  --text-soft:#4a5674;
  --gold:#c9a86a;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'Noto Sans JP',sans-serif;
  color:var(--navy-deep);
  background:var(--bg-light);
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.brand-text{
  font-family:'Zen Old Mincho','Noto Serif JP',serif;
  letter-spacing:.04em;
}
a{color:inherit;text-decoration:none;}

/* ===== Header ===== */
header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:var(--navy-deep);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-wrap{
  max-width:1080px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 28px;
}
.brand{display:flex;align-items:center;gap:10px;}
.brand img{height:34px;width:auto;}
.brand-text{color:var(--white);font-size:1.2rem;}
nav ul{display:flex;gap:6px;list-style:none;}
nav a{
  color:rgba(255,255,255,.75);
  font-size:.88rem;
  padding:10px 16px;
  position:relative;
  display:inline-block;
  transition:color .25s ease;
}
nav a::after{
  content:"";position:absolute;left:16px;right:16px;bottom:6px;height:1px;
  background:var(--gold);transform:scaleX(0);transform-origin:left;
  transition:transform .3s ease;
}
nav a:hover{color:var(--white);}
nav a:hover::after{transform:scaleX(1);}
nav a.active{color:var(--white);}
nav a.active::after{transform:scaleX(1);}
.menu-btn{display:none;background:none;border:none;color:var(--white);font-size:1.4rem;cursor:pointer;}

@media (max-width:760px){
  nav ul{
    position:fixed;top:62px;left:0;right:0;
    flex-direction:column;background:var(--navy-mid);
    padding:8px 0;transform:translateY(-120%);
    transition:transform .3s ease;
  }
  nav ul.open{transform:translateY(0);}
  nav a{padding:14px 28px;display:block;}
  .menu-btn{display:block;}
}

main{padding-top:62px;}
.wrap{max-width:1080px;margin:0 auto;padding:0 28px;}

/* ===== Hero ===== */
.hero{
  background:var(--navy-deep);
  color:var(--white);
  padding:120px 0 100px;
  position:relative;
  overflow:hidden;
}
.hero.compact{padding:90px 0 70px;}
.hero .wrap{position:relative;z-index:2;}
.hero-eyebrow{
  font-family:'Space Mono',monospace;
  font-size:.72rem;letter-spacing:.3em;color:var(--gold);
  margin-bottom:22px;
}
.hero h1{
  font-size:clamp(2.1rem,5vw,3.4rem);
  font-weight:700;line-height:1.55;
  max-width:820px;
}
.hero.compact h1{font-size:clamp(1.8rem,4vw,2.6rem);}
.hero p.lead{
  margin-top:26px;color:var(--blue-pale);font-size:1.02rem;
  max-width:560px;
}
.hero-cta{margin-top:44px;display:flex;gap:16px;flex-wrap:wrap;}
.btn{
  display:inline-block;padding:15px 34px;font-size:.9rem;
  border:1px solid var(--gold);letter-spacing:.05em;
  transition:all .3s ease;
}
.btn-solid{background:var(--gold);color:var(--navy-deep);border-color:var(--gold);}
.btn-solid:hover{background:transparent;color:var(--gold);}
.btn-solid-navy{background:var(--navy-deep);border-color:var(--navy-deep);color:var(--white);}
.btn-solid-navy:hover{background:transparent;color:var(--navy-deep);}
.btn-outline{color:var(--white);border-color:rgba(255,255,255,.4);}
.btn-outline:hover{border-color:var(--white);}
.btn-outline-navy{color:var(--navy-deep);border-color:var(--navy-deep);}
.btn-outline-navy:hover{background:var(--navy-deep);color:var(--white);}

.via-line{position:absolute;right:-60px;top:0;bottom:0;width:50%;opacity:.5;pointer-events:none;}

/* ===== Sections ===== */
.section{padding:96px 0;}
.section.compact{padding:70px 0;}
.section-light{background:var(--white);}
.section-tint{background:var(--bg-light);}
.eyebrow{
  font-family:'Space Mono',monospace;font-size:.7rem;
  letter-spacing:.3em;color:var(--navy-mid);margin-bottom:14px;
}
.section h2{font-size:clamp(1.6rem,3vw,2.2rem);margin-bottom:18px;color:var(--navy-deep);}
.section .desc{color:var(--text-soft);max-width:620px;margin-bottom:56px;}

.service-row{display:grid;grid-template-columns:repeat(3,1fr);gap:0;position:relative;}
.service-row::before{
  content:"";position:absolute;top:38px;left:12%;right:12%;height:1px;
  background-image:linear-gradient(to right,var(--navy-line) 40%,transparent 0%);
  background-size:12px 1px;background-repeat:repeat-x;z-index:0;
}
.service-card{position:relative;z-index:1;padding:0 24px;text-align:center;}
.service-card a{display:block;}
.service-num{
  width:76px;height:76px;border-radius:50%;
  background:var(--navy-deep);color:var(--white);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 28px;font-family:'Space Mono',monospace;font-size:1.1rem;
  border:1px solid var(--navy-deep);
}
.service-card h3{font-size:1.15rem;margin-bottom:14px;color:var(--navy-deep);}
.service-card p{color:var(--text-soft);font-size:.92rem;}

@media (max-width:760px){
  .service-row{grid-template-columns:1fr;gap:56px;}
  .service-row::before{display:none;}
}

/* ===== Pricing ===== */
.price-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.price-card{background:var(--white);border:1px solid var(--blue-pale);padding:44px 36px;position:relative;}
.price-card.highlight{border-color:var(--navy-deep);}
.price-tag{
  font-family:'Space Mono',monospace;font-size:.68rem;letter-spacing:.2em;
  color:var(--navy-mid);margin-bottom:8px;
}
.price-card h3{font-size:1.3rem;margin-bottom:20px;}
.price-amount{font-family:'Space Mono',monospace;font-size:2.6rem;color:var(--navy-deep);}
.price-amount span{font-size:1rem;color:var(--text-soft);}
.price-note{margin-top:6px;font-size:.82rem;color:var(--text-soft);}
.price-includes{margin-top:28px;border-top:1px solid var(--blue-pale);padding-top:22px;}
.price-includes li{list-style:none;font-size:.88rem;color:var(--text-soft);margin-bottom:10px;padding-left:20px;position:relative;}
.price-includes li::before{content:"—";position:absolute;left:0;color:var(--gold);}

@media (max-width:760px){.price-grid{grid-template-columns:1fr;}}

/* ===== Contact / form embed ===== */
.contact-panel{background:var(--white);border:1px solid var(--blue-pale);padding:8px;}
.form-frame-wrap{border-radius:6px;overflow:hidden;background:var(--bg-light);}
.form-frame-wrap iframe{width:100%;height:1000px;border:none;display:block;}
.contact-alt{text-align:center;margin-top:22px;font-size:.88rem;color:var(--text-soft);}
.contact-alt a{color:var(--navy-deep);font-weight:700;border-bottom:1px solid var(--gold);}
.contact-note{color:var(--text-soft);max-width:620px;margin:0 auto 40px;text-align:center;}

/* ===== Footer ===== */
footer{background:var(--navy-deep);color:rgba(255,255,255,.55);padding:36px 0;}
footer .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:.78rem;}
footer .wrap img{height:26px;opacity:.85;}

a:focus-visible, button:focus-visible{outline:2px solid var(--gold);outline-offset:2px;}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{animation:none !important;transition:none !important;}
}

/* =========================
   STUDY TIPS
========================= */

.article-card {
  max-width: 850px;
  margin: 45px auto 0;
  background: #fff;
  border: 1px solid #e5dfd3;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.article-card::before {
  content: "";
  display: block;
  height: 4px;
  background: #c9a86a;
}

.article-card-content {
  padding: 40px 45px 45px;
}

.article-tag {
  display: inline-block;
  font-family: "Space Mono", monospace;
  font-size: 11px;
  letter-spacing: 1.5px;
  color: #9b773e;
  border: 1px solid #c9a86a;
  padding: 5px 12px;
  margin-bottom: 18px;
}

.article-card h3 {
  font-family: "Noto Serif JP", serif;
  font-size: 28px;
  margin: 0 0 18px;
  color: #222;
}

.article-card p {
  font-size: 15px;
  line-height: 1.9;
  margin: 0 0 30px;
  color: #555;
}

.article-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  min-width: 180px;
  padding: 14px 22px;
  background: #292929;
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 0.5px;
  transition: background 0.3s ease, transform 0.3s ease;
}

.article-btn span {
  font-size: 18px;
  transition: transform 0.3s ease;
}

.article-btn:hover {
  background: #c9a86a;
  color: #fff;
  transform: translateY(-2px);
}

.article-btn:hover span {
  transform: translateX(5px);
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}


/* スマートフォン */

@media (max-width: 700px) {

  .article-card-content {
    padding: 30px 24px 32px;
  }

  .article-card h3 {
    font-size: 23px;
  }

  .article-card p {
    font-size: 14px;
  }

  .article-btn {
    width: 100%;
    min-width: 0;
  }

}