:root {
  --green: #2D6A4F;
  --green-dark: #174532;
  --cream: #F4E9D0;
  --cream-light: #FCF8F0;
  --terracotta: #C17F3B;
  --text: #26352B;
  --muted: #667367;
  --line: #D8CBB1;
  --white: #FFFFFF;
  --shadow: 0 20px 48px rgba(23, 69, 50, 0.12);
  --radius: 28px;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #fffaf0 0%, var(--cream-light) 34%, #fffaf0 100%);
  line-height: 1.8;
}

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

a {
  color: inherit;
}

.container {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 1000;
  padding: 8px 12px;
  background: var(--green);
  color: var(--white);
}

.skip-link:focus {
  left: 8px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 250, 240, .9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(216, 203, 177, .75);
}

.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--green-dark);
}

.brand-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
}

.brand strong {
  display: block;
  font-size: 1.25rem;
  line-height: 1.2;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: .78rem;
}

.header-nav {
  display: flex;
  gap: 20px;
  font-size: .95rem;
  color: var(--green-dark);
}

.header-nav a {
  text-decoration: none;
  font-weight: 700;
}

.instagram-pill {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.2;
  text-decoration: none;
  padding: 9px 14px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 8px 20px rgba(23, 69, 50, .08);
  color: var(--green-dark);
  font-size: .82rem;
}

.instagram-pill span {
  color: var(--terracotta);
  font-weight: 800;
}

.section {
  padding: 84px 0;
}

.hero {
  padding-top: 62px;
}

.hero-grid,
.problem-grid,
.solution-grid,
.seminar-grid,
.final-grid {
  display: grid;
  align-items: center;
  gap: 44px;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.05fr) minmax(380px, .95fr);
}

.hero-copy h1,
h2 {
  margin: 0;
  color: var(--green-dark);
  letter-spacing: .02em;
  line-height: 1.25;
}

.hero-copy h1 {
  font-size: clamp(2.35rem, 5.3vw, 4.75rem);
}

h2 {
  font-size: clamp(1.9rem, 3.4vw, 3rem);
}

h3 {
  margin: 0 0 8px;
  line-height: 1.45;
  color: var(--green-dark);
}

p {
  margin: 0;
}

.lead {
  margin-top: 26px;
  max-width: 640px;
  font-size: clamp(1.02rem, 1.6vw, 1.22rem);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--terracotta);
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: .86rem;
}

.center {
  text-align: center;
}

.hero-offer-card {
  margin: 28px 0 20px;
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid rgba(216, 203, 177, .8);
  box-shadow: var(--shadow);
  background: var(--green);
}

.cta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 58px;
  padding: 14px 22px;
  border: 0;
  border-radius: 16px;
  background: var(--terracotta);
  color: var(--white);
  font-weight: 900;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 12px 24px rgba(193, 127, 59, .22);
  transition: transform .18s ease, box-shadow .18s ease, opacity .18s ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(193, 127, 59, .28);
}

.button-line {
  background: linear-gradient(135deg, #1da851 0%, var(--green) 100%);
  box-shadow: 0 14px 28px rgba(45, 106, 79, .24);
}

.button-large {
  width: 100%;
  max-width: 520px;
  font-size: 1.08rem;
}

.line-badge {
  display: inline-grid;
  place-items: center;
  width: 50px;
  height: 34px;
  border-radius: 999px;
  background: var(--white);
  color: #1da851;
  font-weight: 900;
  font-size: .78rem;
}

.microcopy,
.flow-note,
.notice {
  color: var(--muted);
  font-size: .95rem;
}

.hero-visual,
.card-image,
.checklist-card,
.problem-image {
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(216, 203, 177, .75);
  background: var(--white);
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.problem {
  background: rgba(244, 233, 208, .55);
}

.problem-grid {
  grid-template-columns: .75fr 1.25fr;
}

.problem-copy h2 {
  margin-bottom: 24px;
}

.problem-copy p {
  max-width: 670px;
}

.speech-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: 0 16px 36px rgba(23, 69, 50, .08);
}

.speech-list li {
  position: relative;
  padding-left: 24px;
  margin: 8px 0;
}

.speech-list li::before {
  content: "・";
  position: absolute;
  left: 0;
  color: var(--terracotta);
  font-weight: 900;
}

.solution-grid {
  grid-template-columns: 1.1fr .9fr;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 36px;
  padding: 46px;
  box-shadow: var(--shadow);
}

.solution-copy p {
  margin: 20px 0 28px;
}

.checklist-card {
  padding: 16px;
  background: #fffaf1;
}

.reasons {
  background: linear-gradient(180deg, #fffaf0 0%, #f7edd7 100%);
}

.reason-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 34px;
}

.reason-card {
  min-height: 260px;
  padding: 32px 26px;
  background: rgba(255, 255, 255, .86);
  border: 1px solid var(--line);
  border-radius: 26px;
  text-align: center;
  box-shadow: 0 14px 34px rgba(23, 69, 50, .08);
}

.reason-icon {
  width: 74px;
  height: 74px;
  display: grid;
  place-items: center;
  margin: 0 auto 18px;
  border-radius: 24px;
  background: var(--cream);
  font-size: 2rem;
}

.reason-card p {
  color: var(--muted);
  font-size: .98rem;
}

.contents-panel {
  margin-top: 34px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 32px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.contents-panel img {
  width: 100%;
}

.contents-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.contents-list li {
  padding: 22px 18px;
  border-right: 1px solid var(--line);
}

.contents-list li:last-child {
  border-right: 0;
}

.contents-list strong {
  display: block;
  color: var(--green-dark);
  line-height: 1.5;
}

.contents-list span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.6;
}

.seminar {
  background: rgba(45, 106, 79, .06);
}

.seminar-grid {
  grid-template-columns: 1fr .9fr;
}

.seminar p {
  margin-top: 22px;
  max-width: 650px;
}

.notice {
  display: inline-block;
  margin-top: 22px;
  padding: 12px 16px;
  border-radius: 16px;
  background: var(--cream);
  border: 1px solid var(--line);
  color: var(--green-dark);
  font-weight: 700;
}

.flow-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 34px;
}

.flow-cards article {
  position: relative;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 14px 34px rgba(23, 69, 50, .08);
}

.flow-cards span {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--green);
  color: var(--white);
  font-weight: 900;
}

.flow-visual {
  margin-top: 28px;
  border: 1px solid var(--line);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 14px 34px rgba(23, 69, 50, .08);
}

.flow-note {
  margin-top: 18px;
  text-align: center;
}

.faq {
  background: rgba(244, 233, 208, .5);
}

.faq-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 34px;
}

details {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 10px 28px rgba(23, 69, 50, .07);
  overflow: hidden;
}

summary {
  cursor: pointer;
  padding: 22px 24px;
  color: var(--green-dark);
  font-weight: 900;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  float: right;
  color: var(--terracotta);
  font-size: 1.35rem;
  line-height: 1;
}

details[open] summary::after {
  content: "−";
}

details p {
  padding: 0 24px 22px;
  color: var(--muted);
}

.final-cta {
  color: var(--white);
  background: linear-gradient(135deg, var(--green-dark), var(--green));
}

.final-grid {
  grid-template-columns: .65fr 1fr .55fr;
}

.final-copy h2,
.final-copy .eyebrow {
  color: var(--white);
}

.final-copy p {
  margin: 20px 0 28px;
  color: rgba(255, 255, 255, .9);
}

.final-photo,
.final-badge {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .24);
  border-radius: 28px;
  box-shadow: 0 20px 44px rgba(0,0,0,.18);
}

.site-footer {
  padding: 34px 0;
  background: #163929;
  color: rgba(255,255,255,.82);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-footer ul {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer a {
  color: rgba(255,255,255,.88);
  text-decoration: none;
}

.placeholder-modal {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(0,0,0,.45);
}

.placeholder-modal[hidden] {
  display: none;
}

.placeholder-modal__panel {
  width: min(520px, 100%);
  padding: 28px;
  background: var(--white);
  border-radius: 24px;
  box-shadow: 0 26px 60px rgba(0,0,0,.26);
}

.placeholder-modal__panel h2 {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.placeholder-modal__panel code {
  padding: 2px 6px;
  background: #f3eee1;
  border-radius: 6px;
}

@media (max-width: 920px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 12px 0;
  }

  .header-nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .instagram-pill {
    display: none;
  }

  .hero-grid,
  .problem-grid,
  .solution-grid,
  .seminar-grid,
  .final-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 40px;
  }

  .section {
    padding: 62px 0;
  }

  .solution-grid {
    padding: 28px;
  }

  .reason-grid,
  .flow-cards,
  .faq-list {
    grid-template-columns: 1fr;
  }

  .contents-list {
    grid-template-columns: 1fr;
  }

  .contents-list li {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .contents-list li:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 24px, var(--max));
  }

  .brand-icon {
    width: 44px;
    height: 44px;
  }

  .brand strong {
    font-size: 1.08rem;
  }

  .hero-copy h1 {
    font-size: 2.25rem;
  }

  .button {
    width: 100%;
    padding-left: 14px;
    padding-right: 14px;
    font-size: .98rem;
  }

  .cta-row {
    gap: 10px;
  }

  .microcopy {
    width: 100%;
    text-align: center;
  }

  .hero-offer-card {
    margin-top: 22px;
  }

  .solution-grid {
    border-radius: 26px;
  }

  .final-photo,
  .final-badge {
    max-width: 260px;
  }
}