:root {
  --paper: #f8f4ec;
  --surface: #fffdf8;
  --ink: #24211d;
  --muted: #6c655c;
  --line: #d9d0c1;
  --deep: #25322b;
  --accent: #8c5f3a;
  --green: #06c755;
  --max: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.85;
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px max(24px, calc((100vw - var(--max)) / 2));
  background: rgba(248, 244, 236, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  font-family: "Noto Serif JP", serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.brand small {
  color: var(--accent);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 12px;
  letter-spacing: 0.12em;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
}

.desktop-nav a,
.mobile-nav a {
  border-bottom: 1px solid transparent;
}

.desktop-nav a:hover,
.desktop-nav a[aria-current="page"],
.mobile-nav a[aria-current="page"] {
  color: var(--ink);
  border-color: var(--accent);
}

.desktop-nav .nav-cta {
  color: var(--surface);
  background: var(--deep);
  border: 1px solid var(--deep);
  padding: 8px 14px;
}

.menu-button {
  display: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  padding: 8px 12px;
  font: inherit;
}

.mobile-nav {
  display: grid;
  gap: 14px;
  padding: 18px 24px 22px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.mobile-nav[hidden] {
  display: none;
}

.hero {
  padding: 88px max(24px, calc((100vw - var(--max)) / 2)) 72px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.hero-copy {
  max-width: 820px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  color: var(--deep);
  font-family: "Noto Serif JP", serif;
  line-height: 1.45;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(34px, 6vw, 68px);
  font-weight: 700;
}

h2 {
  margin: 0 0 22px;
  font-size: clamp(26px, 4vw, 40px);
}

h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

p {
  margin: 0;
}

.hero-lead {
  max-width: 680px;
  margin-top: 24px;
  font-size: clamp(18px, 2.6vw, 26px);
  color: var(--deep);
}

.hero-body {
  max-width: 680px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 16px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 18px;
  border: 1px solid var(--deep);
  font-weight: 700;
}

.button.primary {
  color: #fff;
  background: var(--deep);
}

.button.secondary {
  color: var(--deep);
  background: transparent;
}

.button:hover {
  transform: translateY(-1px);
}

main {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
}

.section {
  padding: 76px 0;
  border-bottom: 1px solid var(--line);
}

.section.narrow {
  max-width: 820px;
}

.large-text {
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
}

.text-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.text-grid-wide {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
}

.text-grid article {
  border-top: 2px solid var(--deep);
  padding-top: 18px;
}

.text-grid p,
.course-row p,
.plain-list,
.profile p,
.faq-list p,
.contact-options p {
  color: var(--muted);
}

.course-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.course-row {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.course-row strong {
  display: block;
  color: var(--deep);
  font-family: "Noto Serif JP", serif;
  font-size: 22px;
}

.course-row em {
  display: block;
  margin-top: 4px;
  color: var(--accent);
  font-style: normal;
  font-size: 13px;
}

.quote-section {
  margin-left: auto;
  margin-right: 0;
}

blockquote {
  margin: 0;
  color: var(--deep);
  font-family: "Noto Serif JP", serif;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.75;
}

.faq-list {
  display: grid;
  gap: 12px;
}

details {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 18px 20px;
}

summary {
  cursor: pointer;
  color: var(--deep);
  font-weight: 700;
}

details p {
  margin-top: 12px;
}

.numbered {
  display: grid;
  gap: 28px;
}

.numbered article {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
}

.numbered span {
  color: var(--accent);
  font-family: "Noto Serif JP", serif;
  font-size: 28px;
  font-weight: 700;
}

.course-detail {
  max-width: 920px;
}

.plain-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 28px;
  margin: 28px 0;
  padding: 0;
  list-style: none;
}

.plain-list li {
  border-left: 2px solid var(--accent);
  padding-left: 12px;
}

.table-block {
  margin-top: 28px;
}

.table-block + .table-block {
  margin-top: 34px;
}

.table-block h3 {
  margin: 0 0 10px;
  color: var(--deep);
  font-size: 1.05rem;
}

.table-note {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.9rem;
}

.table-wrap {
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--line);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--deep);
  background: #f1eadf;
  font-weight: 700;
}

.price-line {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--deep);
  font-weight: 700;
}

.profile {
  display: grid;
  grid-template-columns: minmax(220px, 340px) 1fr;
  gap: 48px;
  align-items: start;
}

.profile img {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--surface);
}

.profile-kana {
  margin-bottom: 18px;
  color: var(--muted);
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.badges span {
  padding: 5px 9px;
  border: 1px solid var(--line);
  color: var(--deep);
  background: var(--surface);
  font-size: 12px;
}

.contact-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.contact-options article {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 32px;
}

.contact-options .button {
  margin-top: 22px;
}

.consult {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 54px max(24px, calc((100vw - var(--max)) / 2));
  background: var(--deep);
  color: #fff;
}

.consult h2,
.consult .section-kicker {
  color: #fff;
}

.consult p {
  max-width: 620px;
  color: rgba(255, 255, 255, 0.78);
}

.consult .button.primary {
  border-color: #fff;
  background: #fff;
  color: var(--deep);
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 36px;
  padding: 44px max(24px, calc((100vw - var(--max)) / 2)) 72px;
  background: var(--surface);
  color: var(--muted);
}

.footer-brand {
  color: var(--deep);
  font-family: "Noto Serif JP", serif;
  font-size: 22px;
  font-weight: 700;
}

.site-footer nav {
  display: flex;
  gap: 18px;
  font-size: 14px;
}

.copyright {
  grid-column: 1 / -1;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-size: 12px;
}

.floating-line {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 30;
  padding: 12px 16px;
  background: var(--green);
  color: #fff;
  box-shadow: 0 8px 26px rgba(0, 0, 0, 0.18);
  font-weight: 700;
}

@media (min-width: 761px) {
  .floating-line {
    display: none;
  }
}

@media (max-width: 760px) {
  .site-header {
    display: grid;
    grid-template-columns: 1fr auto;
    padding: 14px 18px;
    max-width: 100vw;
  }

  .desktop-nav {
    display: none;
  }

  .menu-button {
    display: inline-flex;
  }

  .hero {
    padding: 56px 20px 48px;
  }

  h1 {
    width: 100%;
    max-width: 100%;
    font-size: 28px;
    line-height: 1.55;
    word-break: break-all;
  }

  .hero-copy,
  .hero-lead,
  .hero-body,
  .large-text,
  p {
    max-width: 100%;
    overflow-wrap: anywhere;
  }

  main {
    width: calc(100% - 36px);
  }

  .section {
    padding: 54px 0;
  }

  .hero-actions,
  .consult,
  .site-footer,
  .site-footer nav {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  .text-grid,
  .text-grid-wide,
  .plain-list,
  .contact-options,
  .profile {
    grid-template-columns: 1fr;
  }

  .course-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .numbered article {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .consult,
  .site-footer {
    display: flex;
    padding-left: 20px;
    padding-right: 20px;
  }

  .floating-line {
    left: 18px;
    right: 18px;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .site-header {
    width: min(100vw, 390px);
  }

  .hero-copy,
  main {
    width: auto;
    max-width: 350px;
    margin-left: 20px;
    margin-right: auto;
  }

  .hero {
    padding-left: 0;
    padding-right: 0;
  }

  h1 {
    font-size: 27px;
  }
}