#isahaya-lp {
  --ink: #173338;
  --gold: #986c2c;
  --line: #087d3d;
  font-family: "Yu Gothic", Meiryo, sans-serif;
  color: #243b3e;
  background: #fff;
  font-size: 16px;
  line-height: 1.9;
  text-align: left;
  overflow-wrap: anywhere;
}
#isahaya-lp * { box-sizing: border-box; }
#isahaya-lp h1,
#isahaya-lp h2,
#isahaya-lp h3,
#isahaya-lp p,
#isahaya-lp figure { margin: 0; }
#isahaya-lp a { color: inherit; }
#isahaya-lp img {
  display: block;
  max-width: 100%;
  height: auto;
}
#isahaya-lp .wrap {
  width: min(1100px, calc(100% - 40px));
  margin: auto;
}
#isahaya-lp .top {
  padding: 18px 0;
  border-bottom: 1px solid #d9e2e2;
}
#isahaya-lp .top .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
#isahaya-lp .brand {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .08em;
}
#isahaya-lp .small { font-size: 14px; }
#isahaya-lp .hero {
  background: #eef3f3;
  padding: 54px 0 38px;
}
#isahaya-lp .hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  align-items: center;
  gap: 40px;
}
#isahaya-lp .eyebrow {
  color: #796028;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .12em;
  margin-bottom: 18px;
}
#isahaya-lp h1 {
  font-family: "Yu Mincho", serif;
  font-size: clamp(32px, 3.8vw, 48px);
  line-height: 1.55;
  letter-spacing: .035em;
  margin-bottom: 22px;
}
#isahaya-lp .lead {
  font-size: 18px;
  margin-bottom: 24px;
}
#isahaya-lp .hero figure {
  background: white;
  padding: 12px;
}
#isahaya-lp figcaption {
  font-size: 13px;
  padding-top: 10px;
  color: #53666a;
}
#isahaya-lp .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0 12px;
}
#isahaya-lp .btn {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 56px;
  padding: 14px 22px;
  border-radius: 4px;
  font-size: 16px;
  line-height: 1.6;
  font-weight: 700;
  text-decoration: none;
  background: var(--line);
  color: white;
  border: 2px solid var(--line);
}
#isahaya-lp .btn.phone {
  background: white;
  border-color: var(--ink);
  color: var(--ink);
}
#isahaya-lp a:hover { opacity: .85; }
#isahaya-lp a:focus-visible,
#isahaya-lp summary:focus-visible {
  outline: 3px solid #c58522;
  outline-offset: 4px;
}
#isahaya-lp .proof {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid #cbd8d8;
  padding-top: 24px;
  margin-top: 32px;
  gap: 20px;
}
#isahaya-lp .proof strong {
  display: block;
  color: var(--ink);
  font-size: 20px;
}
#isahaya-lp section.block { padding: 66px 0; }
#isahaya-lp h2 {
  font-family: "Yu Mincho", serif;
  font-size: clamp(25px, 3vw, 34px);
  line-height: 1.65;
  margin-bottom: 24px;
  color: var(--ink);
}
#isahaya-lp h3 {
  font-size: 20px;
  line-height: 1.65;
  margin-bottom: 10px;
}
#isahaya-lp .muted { background: #f4f6f6; }
#isahaya-lp .grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
#isahaya-lp .item {
  border-top: 3px solid #a0804b;
  padding: 22px 0 4px;
}
#isahaya-lp .number {
  color: var(--gold);
  font-size: 15px;
  letter-spacing: .1em;
  font-weight: 700;
  margin-bottom: 10px;
}
#isahaya-lp .case {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 38px;
  align-items: center;
}
#isahaya-lp .case img { width: 100%; }
#isahaya-lp .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0;
}
#isahaya-lp .tag {
  padding: 4px 12px;
  background: #eaf0f0;
  font-size: 14px;
}
#isahaya-lp .textlink {
  display: inline-block;
  margin-top: 18px;
  text-underline-offset: 5px;
  font-weight: 700;
}
#isahaya-lp .budget {
  background: var(--ink);
  color: white;
  padding: 34px;
  border-radius: 4px;
}
#isahaya-lp .budget h3 {
  color: white;
  font-size: 24px;
}
#isahaya-lp .budget p { margin-top: 12px; }
#isahaya-lp .note {
  font-size: 14px;
  margin-top: 15px;
  line-height: 1.8;
}
#isahaya-lp .steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
#isahaya-lp .step {
  border-top: 1px solid #becdce;
  padding-top: 18px;
}
#isahaya-lp .step h3 { font-size: 18px; }
#isahaya-lp details {
  border-bottom: 1px solid #d5dfdf;
  padding: 20px 0;
}
#isahaya-lp summary {
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  line-height: 1.7;
}
#isahaya-lp details p { padding-top: 14px; }
#isahaya-lp .contact {
  background: #edf3ef;
  text-align: center;
  padding: 60px 0;
}
#isahaya-lp .contact .actions {
  justify-content: center;
}
#isahaya-lp .message {
  max-width: 660px;
  margin: 24px auto 0;
  padding: 22px;
  text-align: left;
  background: white;
  border-left: 4px solid var(--line);
}
#isahaya-lp .footer {
  background: var(--ink);
  color: white;
  padding: 30px 0;
  font-size: 14px;
}
#isahaya-lp .footer strong { font-size: 19px; }
#isahaya-lp .jump {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  margin-top: 25px;
  font-size: 14px;
}
#isahaya-lp .jump a { text-underline-offset: 5px; }

@media (max-width: 720px) {
  #isahaya-lp .wrap { width: calc(100% - 32px); }
  #isahaya-lp .top .small { display: none; }
  #isahaya-lp .hero { padding: 30px 0; }
  #isahaya-lp .hero-grid,
  #isahaya-lp .case,
  #isahaya-lp .grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  #isahaya-lp .hero-grid figure { order: 2; }
  #isahaya-lp .lead { font-size: 16px; }
  #isahaya-lp .actions {
    display: grid;
    grid-template-columns: 1fr;
  }
  #isahaya-lp .proof { gap: 12px; }
  #isahaya-lp .proof strong { font-size: 16px; }
  #isahaya-lp .proof .small { font-size: 13px; }
  #isahaya-lp section.block { padding: 44px 0; }
  #isahaya-lp .steps { grid-template-columns: 1fr 1fr; }
  #isahaya-lp .budget { padding: 24px; }
  #isahaya-lp .contact { padding: 44px 0; }
  #isahaya-lp .contact .actions { display: grid; }
  #isahaya-lp .brand { font-size: 20px; }
}