@font-face {
  font-family: "Noto Serif JP";
  src: url("assets/fonts/noto-serif-jp-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Noto Sans JP";
  src: url("assets/fonts/noto-sans-jp-variable.woff2") format("woff2");
  font-weight: 400 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: Inter;
  src: url("assets/fonts/inter-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
:root {
  color-scheme: light;
  --blue: #2459d8;
  --deep: #1946b2;
  --ink: #152b46;
  --muted: #52637a;
  --line: #dce3eb;
  --light: #f4f7fa;
  --shell: 1264px;
  --serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color: var(--ink);
  background: #fff;
  font-synthesis: none;
  scroll-behavior: smooth;
}
* { box-sizing: border-box; }
body { margin: 0; font-size: 1rem; line-height: 1.85; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, summary:focus-visible { outline: 3px solid #f59e0b; outline-offset: 5px; border-radius: 4px; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { overflow-wrap: anywhere; }
h2 { font-family: var(--serif); font-size: clamp(1.75rem, 3.2vw, 2.5rem); line-height: 1.65; font-weight: 500; }
h3 { font-size: 1.125rem; line-height: 1.65; font-weight: 600; }
.shell { width: min(var(--shell), calc(100% - 96px)); margin-inline: auto; }
.section { padding-block: 112px; scroll-margin-top: 40px; }
.eyebrow { margin-bottom: 20px; font-size: .875rem; font-weight: 400; color: var(--muted); }
.skip-link { position: fixed; top: 8px; left: 8px; padding: 10px 18px; background: #fff; z-index: 100; transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }
.mobile-copy, .mobile-break { display: none; }
.header { background: #fff; }
.header-inner { display: flex; min-height: 88px; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; font-family: Inter, -apple-system, BlinkMacSystemFont, sans-serif; font-size: 23px; font-weight: 600; line-height: 1.3; }
.brand img { width: 36px; height: 36px; border-radius: 8px; }
.brand strong { font-weight: inherit; }
.header nav { display: flex; align-items: center; gap: 32px; font-size: .875rem; }
.header nav a:hover { color: var(--blue); }
.header-cta { font-weight: 600; }
.hero-stage { background: var(--light); }
.hero { display: grid; grid-template-columns: minmax(0, 1fr) 488px; align-items: center; gap: 72px; min-height: 804px; padding-block: 60px 42px; }
.hero-copy { display: flex; flex-direction: column; gap: 26px; max-width: 692px; }
.hero .eyebrow { margin: 0; }
.hero h1 { font-family: var(--serif); font-size: clamp(2.5rem, 4.45vw, 4rem); font-weight: 500; line-height: 1.55; }
.hero-description { color: var(--muted); font-size: 18px; line-height: 1.9; }
.hero-description > span { display: block; }
.hero-action { display: grid; justify-items: start; gap: 14px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 18px; min-height: 59px; padding: 18px 26px; border-radius: 6px; font-size: 1rem; font-weight: 600; line-height: 1.45; text-align: center; transition: background .15s; }
.button svg { flex-shrink: 0; }
.button-blue { background: var(--blue); color: #fff; }
.button-blue:hover { background: var(--deep); }
.cta-note { color: var(--muted); font-size: .75rem; line-height: 1.8; }
.cta-note span { margin-inline: 4px; }
.hero-visual { display: flex; align-items: center; flex-direction: column; }
.phone { width: 300px; border: 1px solid #d3dce7; border-radius: 24px; overflow: hidden; background: #fff; box-shadow: 0 12px 48px #142c461a; }
.phone img { width: 100%; }
.hero-visual figcaption { margin-top: 26px; color: var(--muted); font-size: .8125rem; line-height: 1.8; text-align: center; }
.facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 48px; padding-block: 34px; }
.facts strong { font-size: 26px; line-height: 1.45; font-weight: 600; }
.facts p { margin-top: 8px; color: var(--muted); font-size: .8125rem; }
.audience { display: grid; grid-template-columns: 1fr 1.15fr; align-items: center; gap: 80px; border-top: 1px solid var(--line); }
.audience-list { padding: 0; margin: 0; list-style: none; }
.audience-list li { position: relative; padding: 18px 0 18px 30px; border-bottom: 1px solid var(--line); }
.audience-list li::before { content: "✓"; position: absolute; left: 0; color: var(--muted); }
.audience-list li:first-child { padding-top: 0; }
.learning { background: var(--light); }
.section-heading { text-align: center; }
.section-heading > p:last-child { margin-top: 20px; color: var(--muted); }
.learning-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 48px; margin-top: 56px; }
.step-heading { display: flex; align-items: center; gap: 12px; }
.step-number { color: var(--muted); font-size: .875rem; font-variant-numeric: tabular-nums; }
.learning-step > p { min-height: 92px; margin-top: 12px; color: var(--muted); }
.screen-wrap { max-width: 250px; margin: 28px auto 0; overflow: hidden; border: 1px solid #d3dce7; border-radius: 22px; background: #fff; box-shadow: 0 12px 40px #142c460c; }
.screen-wrap img { width: 100%; }
.image-note { margin-top: 32px; color: var(--muted); font-size: .8125rem; text-align: center; }
.details-section { display: grid; grid-template-columns: 1fr 1.1fr; align-items: start; gap: 96px; }
.details-intro > p:last-child { max-width: 390px; margin-top: 22px; color: var(--muted); }
.feature-list article { display: flex; align-items: start; gap: 18px; padding-block: 28px; border-bottom: 1px solid var(--line); }
.feature-list article:first-child { padding-top: 0; }
.feature-index { color: var(--muted); font-size: .875rem; line-height: 2.15; }
.feature-list p { margin-top: 9px; color: var(--muted); }
.price-section { background: var(--light); }
.price-layout { display: grid; grid-template-columns: 1.2fr 1fr; align-items: center; gap: 88px; }
.price-copy > p:last-child { margin-top: 25px; color: var(--muted); }
.price-card { padding: 36px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.price-label { font-size: .875rem; }
.price { display: flex; align-items: baseline; gap: 5px; font-size: 4rem; font-weight: 600; line-height: 1.6; }
.price-currency { font-size: 2rem; }
.price-type { margin-left: 15px; padding: 3px 10px; border-radius: 4px; background: var(--light); font-size: .875rem; }
.price-market { color: var(--muted); font-size: .8125rem; }
.price-card ul { padding: 22px 0; margin: 26px 0; border-block: 1px solid var(--line); list-style: none; font-size: .875rem; }
.price-card li { position: relative; padding-left: 23px; margin: 8px 0; }
.price-card li::before { content: "✓"; position: absolute; left: 0; color: var(--muted); }
.price-card .button { width: 100%; padding-inline: 14px; }
.price-fine { margin-top: 15px; color: var(--muted); font-size: .8125rem; line-height: 1.7; }
.faq { display: grid; grid-template-columns: .72fr 1.28fr; gap: 80px; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list details:first-child { border-top: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 22px 35px 22px 0; list-style: none; cursor: pointer; font-size: 1rem; font-weight: 600; line-height: 1.7; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "＋"; position: absolute; right: 0; top: 22px; color: var(--muted); font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { padding: 0 28px 24px 0; color: var(--muted); }
.faq-list a { color: var(--blue); text-decoration: underline; text-underline-offset: 4px; }
.closing { padding-block: 88px; background: var(--ink); color: #fff; text-align: center; }
.closing-inner { display: flex; align-items: center; flex-direction: column; }
.closing img { margin-bottom: 24px; border: 1px solid #ffffff40; border-radius: 16px; }
.closing .eyebrow { margin-bottom: 16px; color: #dce3eb; letter-spacing: .12em; }
.closing h2 { font-size: clamp(1.8rem, 3.6vw, 2.8rem); }
.button-white { margin-top: 30px; background: #fff; color: var(--deep); }
.button-white:hover { background: #e9f0ff; }
.closing-note { margin-top: 15px; color: #dce3eb; font-size: .875rem; }
.footer { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding-block: 40px; }
.footer-brand { font-family: Inter, -apple-system, BlinkMacSystemFont, sans-serif; font-size: 1.125rem; font-weight: 600; }
.footer p { margin-top: 4px; color: var(--muted); font-size: .8125rem; }
.footer nav { display: flex; flex-wrap: wrap; gap: 24px; color: var(--muted); font-size: .8125rem; }
.footer a:hover { text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 1100px) {
  .shell { width: calc(100% - 64px); }
  .hero { grid-template-columns: minmax(0, 1fr) 350px; gap: 36px; min-height: 720px; padding-block: 48px; }
  .hero h1 { font-size: clamp(2rem, 4.3vw, 3rem); }
  .hero-description { font-size: 16px; }
  .phone { width: 270px; }
  .facts { gap: 32px; }
  .facts strong { font-size: 22px; }
  .audience, .details-section, .price-layout, .faq { gap: 48px; }
  .learning-grid { gap: 24px; }
  .learning-step > p { min-height: 115px; }
  .step-heading { gap: 8px; }
  .step-heading h3 { font-size: 1rem; }
  .price-card { padding: 26px; }
  .footer { align-items: start; }
  .footer nav { justify-content: flex-end; gap: 10px 20px; }
}
@media (max-width: 760px) {
  .shell { width: calc(100% - 48px); }
  .header-inner { min-height: 72px; }
  .brand { font-size: 20px; }
  .header nav { display: none; }
  .hero { display: flex; flex-direction: column; align-items: stretch; gap: 28px; max-width: 520px; min-height: 0; padding-block: 36px; }
  .hero-copy { max-width: none; gap: 20px; }
  .hero .eyebrow { font-size: .75rem; }
  .hero h1 { font-size: clamp(1.75rem, 8.72vw, 2.875rem); }
  .hero-description { font-size: .875rem; }
  .hero-action { justify-items: stretch; gap: 12px; }
  .hero .button { width: 100%; min-height: 54px; padding: 17px 16px; gap: 12px; font-size: .875rem; }
  .cta-note { font-size: .6875rem; text-align: center; }
  .phone { width: 222px; }
  .hero-visual figcaption { margin-top: 28px; font-size: .75rem; }
  .desktop-copy { display: none; }
  .mobile-copy { display: inline; }
  .facts { gap: 16px; padding-block: 26px; }
  .facts strong { font-size: 18px; white-space: nowrap; }
  .facts p { font-size: .6875rem; line-height: 1.6; }
  .section { padding-block: 72px; }
  .audience, .details-section, .price-layout, .faq { grid-template-columns: 1fr; gap: 32px; }
  .audience-list li { padding-block: 16px; }
  .learning-grid { grid-template-columns: 1fr; gap: 52px; margin-top: 36px; }
  .learning-step { width: 100%; max-width: 430px; margin-inline: auto; }
  .learning-step > p { min-height: 0; margin-top: 10px; }
  .step-heading h3 { font-size: 1.125rem; }
  .screen-wrap { max-width: 235px; margin-top: 24px; }
  .mobile-break { display: block; }
  .section-heading { text-align: left; }
  .section-heading > p:last-child { margin-top: 15px; }
  .image-note { margin-top: 28px; text-align: left; }
  .details-intro > p:last-child { max-width: none; margin-top: 18px; }
  .feature-list article { padding-block: 24px; }
  .price-copy > p:last-child { margin-top: 20px; }
  .price-card { padding: 28px; }
  .price { font-size: 3.75rem; }
  .faq-list summary { padding-block: 20px; }
  .faq-list summary::after { top: 20px; }
  .closing { padding-block: 72px; }
  .closing h2 { font-size: 1.875rem; }
  .closing .button { width: 100%; max-width: 350px; padding-inline: 15px; }
  .footer { flex-direction: column; gap: 24px; padding-block: 32px; }
  .footer nav { justify-content: flex-start; gap: 12px 22px; }
}
@media (max-width: 360px) {
  .facts { gap: 12px; }
  .facts strong { font-size: 16px; }
  .facts p { font-size: .625rem; }
  .cta-note span { margin-inline: 0; }
  .price-card { padding: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
  .button { transition: none; }
}