:root {
  --color-blue: #0f63d8;
  --color-blue-deep: #0641a8;
  --color-blue-soft: #eaf5ff;
  --color-sky: #dff2ff;
  --color-yellow: #ffd83d;
  --color-yellow-soft: #fff4bf;
  --color-coral: #ff4f47;
  --color-coral-dark: #e63b34;
  --color-navy: #10234a;
  --color-text: #24324f;
  --color-muted: #65758f;
  --color-border: #dbe8f7;
  --color-card: #ffffff;
  --color-bg: #ffffff;
  --shadow-card: 0 12px 28px rgba(15, 99, 216, 0.08);
  --shadow-cta: 0 12px 28px rgba(255, 79, 71, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 24px;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(219, 232, 247, 0.8);
  backdrop-filter: blur(12px);
}

.brand {
  color: var(--color-blue-deep);
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--color-navy);
  font-size: 13px;
  font-weight: 700;
}

.header-cta {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--color-coral);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}

.hero {
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 16%, rgba(255, 216, 61, 0.2), transparent 18%),
    linear-gradient(180deg, #f7fbff 0%, #ffffff 74%);
  border-bottom: 1px solid var(--color-border);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
  max-width: 1080px;
  margin: 0 auto;
  padding: 34px 24px 58px;
}

.hero-copy {
  max-width: 920px;
  margin: 0 auto;
  text-align: center;
}

.section-kicker {
  margin: 0 0 12px;
  color: var(--color-blue-deep);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  padding: 0;
  max-width: 720px;
  margin: 0 auto 24px;
  list-style: none;
}

.hero-points li {
  min-height: 74px;
  padding: 16px 10px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--color-blue-deep);
  font-size: 13px;
  font-weight: 800;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.hero-actions {
  margin-bottom: 22px;
}

.primary-btn {
  display: inline-flex;
  min-height: 58px;
  align-items: center;
  justify-content: center;
  padding: 0 30px;
  border-radius: 999px;
  background: linear-gradient(180deg, #ff6a5f, #ff3f38);
  color: #fff;
  font-size: 16px;
  font-weight: 900;
  box-shadow: var(--shadow-cta);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 34px rgba(255, 79, 71, 0.32);
}

.price-note {
  margin: 12px 0 0;
  color: var(--color-muted);
  font-size: 14px;
  font-weight: 700;
}

.price-note strong {
  color: var(--color-coral);
  font-size: 19px;
}

.mini-reviews {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  max-width: 720px;
  margin: 0 auto;
}

.mini-reviews article,
.problem-card,
.benefit-grid article,
.bonus-grid article,
.voice-grid article,
.step-grid article,
.faq-list details {
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: var(--color-card);
  box-shadow: var(--shadow-card);
}

.mini-reviews article {
  padding: 16px;
}

.stars {
  color: #f8bd1c;
  font-size: 18px;
  letter-spacing: 1px;
  line-height: 1;
}

.mini-reviews strong {
  display: block;
  margin-top: 8px;
  color: var(--color-navy);
  font-size: 14px;
}

.mini-reviews p {
  margin: 5px 0 0;
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.65;
}

.hero-visual {
  position: relative;
  display: grid;
  gap: 14px;
  justify-items: center;
}

.hero-image {
  width: 100%;
  max-width: 980px;
  border: 1px solid rgba(15, 99, 216, 0.14);
  border-radius: 18px;
  filter: drop-shadow(0 22px 34px rgba(15, 99, 216, 0.14));
}

.section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 70px 24px;
}

.section:nth-of-type(even) {
  background: linear-gradient(180deg, rgba(234, 245, 255, 0.58), rgba(255, 255, 255, 0));
}

.section-head {
  max-width: 760px;
  margin: 0 auto 34px;
  text-align: center;
}

.section-head h2 {
  margin: 0;
  color: var(--color-navy);
  font-size: 32px;
  line-height: 1.35;
}

.section-head p:last-child {
  margin: 12px auto 0;
  color: var(--color-muted);
  font-weight: 600;
}

.problem-grid,
.benefit-grid,
.bonus-grid,
.voice-grid,
.step-grid,
.curriculum-roadmap {
  display: grid;
  gap: 16px;
}

.problem-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.problem-card {
  padding: 20px;
}

.problem-icon {
  display: block;
  width: 88px;
  height: 88px;
  margin-bottom: 14px;
  border-radius: 50%;
  background-image: url("./assets/icons/problem-icons-set.png");
  background-size: 200% 200%;
  box-shadow: inset 0 0 0 1px rgba(15, 99, 216, 0.1);
}

.icon-idea { background-position: 0 0; }
.icon-long { background-position: 100% 0; }
.icon-draw { background-position: 0 100%; }
.icon-structure { background-position: 100% 100%; }

.problem-card h3,
.benefit-grid h3,
.bonus-grid h3,
.voice-grid h3,
.step-grid h3 {
  margin: 0 0 8px;
  color: var(--color-navy);
  font-size: 18px;
  line-height: 1.4;
}

.problem-card p,
.benefit-grid p,
.bonus-grid p,
.voice-grid p,
.step-grid p {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
}

.future-layout,
.bonus-layout,
.voice-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.9fr);
  gap: 28px;
  align-items: center;
}

.future-image,
.timeline-visual,
.bundle-image,
.review-visual,
.bundle-visual-card {
  border-radius: 18px;
  box-shadow: var(--shadow-card);
}

.future-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.future-cards article {
  min-height: 134px;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: #fff;
}

.future-cards .after {
  background: linear-gradient(180deg, #fffef0, #ffffff);
  border-color: rgba(255, 216, 61, 0.7);
}

.future-cards span,
.benefit-grid span {
  display: inline-flex;
  margin-bottom: 6px;
  color: var(--color-blue);
  font-size: 13px;
  font-weight: 900;
}

.future-cards h3 {
  margin: 0 0 8px;
  color: var(--color-blue-deep);
  font-size: 20px;
}

.future-cards p {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
}

.concept-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 18px;
  align-items: center;
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: 18px;
  background: linear-gradient(180deg, #f7fbff, #fff);
}

.concept-flow article {
  text-align: center;
}

.concept-flow strong {
  display: inline-grid;
  place-items: center;
  width: 76px;
  height: 76px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--color-sky);
  color: var(--color-blue);
  font-size: 22px;
  font-weight: 900;
}

.concept-flow h3 {
  margin: 0 0 8px;
  color: var(--color-navy);
}

.concept-flow p {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
}

.flow-arrow {
  color: var(--color-blue);
  font-size: 32px;
  font-weight: 900;
}

.benefit-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.benefit-grid article,
.bonus-grid article,
.voice-grid article,
.step-grid article {
  padding: 22px;
}

.curriculum-roadmap {
  grid-template-columns: repeat(6, minmax(0, 1fr));
  display: grid;
  gap: 14px;
  position: relative;
}

.curriculum-roadmap::before {
  content: "";
  position: absolute;
  top: 34px;
  left: 5%;
  right: 5%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-blue), var(--color-yellow));
}

.curriculum-roadmap article {
  position: relative;
  z-index: 1;
  display: grid;
  align-content: start;
  min-height: 178px;
  padding: 20px 16px;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  background: #fff;
  box-shadow: var(--shadow-card);
}

.curriculum-roadmap article span {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  margin-bottom: 10px;
  border-radius: 50%;
  background: var(--color-blue);
  color: #fff;
  font-weight: 900;
}

.curriculum-roadmap h3 {
  margin: 0 0 8px;
  color: var(--color-navy);
  font-size: 17px;
  line-height: 1.38;
}

.curriculum-roadmap p {
  margin: 0;
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.65;
}

.bonus-layout,
.voice-layout {
  grid-template-columns: minmax(360px, 0.82fr) minmax(0, 1fr);
}

.bonus-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.bundle-visual-card {
  display: grid;
  align-content: center;
  gap: 14px;
  min-height: 360px;
  padding: 32px;
  border: 1px solid rgba(15, 99, 216, 0.16);
  background:
    radial-gradient(circle at 80% 18%, rgba(255, 216, 61, 0.4), transparent 20%),
    linear-gradient(135deg, #eef8ff, #ffffff 55%, #fff9d8);
}

.bundle-visual-card strong {
  display: inline-flex;
  width: fit-content;
  padding: 12px 18px;
  border-radius: 999px;
  background: var(--color-blue);
  color: #fff;
  font-size: 22px;
  font-weight: 900;
}

.bundle-visual-card > span {
  color: var(--color-coral);
  font-size: 34px;
  font-weight: 900;
  line-height: 1;
}

.bundle-visual-card div {
  display: grid;
  gap: 10px;
}

.bundle-visual-card p {
  margin: 0;
  padding: 12px 14px;
  border: 1px solid rgba(15, 99, 216, 0.12);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--color-navy);
  font-size: 14px;
  font-weight: 900;
}

.voice-grid {
  grid-template-columns: 1fr;
}

.pricing {
  max-width: none;
  background: linear-gradient(180deg, #fff, #fff8d8);
}

.pricing-card {
  display: grid;
  grid-template-columns: 0.55fr auto 0.75fr 1fr;
  gap: 20px;
  align-items: center;
  max-width: 1020px;
  margin: 0 auto;
  padding: 34px;
  border: 1px solid rgba(255, 216, 61, 0.8);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 18px 40px rgba(255, 216, 61, 0.22);
}

.price-left p,
.price-left span,
.price-main span,
.price-main small {
  margin: 0;
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 800;
}

.price-left strong {
  display: block;
  color: var(--color-text);
  font-size: 38px;
  text-decoration: line-through;
}

.price-arrow {
  color: var(--color-yellow);
  font-size: 44px;
  font-weight: 900;
}

.price-main {
  display: grid;
  justify-items: center;
  padding: 24px 16px;
  border-radius: 50%;
  background: var(--color-yellow-soft);
}

.price-main span {
  color: var(--color-blue-deep);
}

.price-main strong {
  color: var(--color-coral);
  font-size: 56px;
  line-height: 1;
}

.price-includes h2 {
  margin: 0 0 10px;
  color: var(--color-navy);
  font-size: 20px;
}

.price-includes ul {
  columns: 2;
  padding-left: 18px;
  margin: 0;
  color: var(--color-text);
  font-size: 14px;
  font-weight: 700;
}

.price-btn {
  grid-column: 1 / -1;
  justify-self: center;
  min-width: min(520px, 100%);
}

.guarantee {
  grid-column: 1 / -1;
  margin: -4px 0 0;
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 700;
  text-align: center;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 880px;
  margin: 0 auto;
}

.faq-list details {
  padding: 18px 20px;
}

.faq-list summary {
  cursor: pointer;
  color: var(--color-navy);
  font-weight: 900;
}

.faq-list p {
  margin: 12px 0 0;
  color: var(--color-muted);
}

.final-cta {
  padding: 76px 24px 110px;
  background: linear-gradient(135deg, var(--color-blue-deep), var(--color-blue));
  color: #fff;
  text-align: center;
}

.final-inner {
  max-width: 820px;
  margin: 0 auto;
}

.final-inner h2 {
  margin: 0;
  font-size: 38px;
  line-height: 1.35;
}

.final-inner p {
  margin: 16px 0 26px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 17px;
}

.final-inner span {
  display: block;
  margin-top: 16px;
  color: var(--color-yellow);
  font-weight: 900;
}

.sticky-cta {
  position: fixed;
  left: 50%;
  bottom: 18px;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 18px;
  transform: translateX(-50%);
  width: min(620px, calc(100% - 28px));
  padding: 12px 14px 12px 22px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 999px;
  background: rgba(16, 35, 74, 0.94);
  color: #fff;
  box-shadow: 0 18px 36px rgba(16, 35, 74, 0.22);
  backdrop-filter: blur(12px);
}

.sticky-cta span {
  flex: 1;
  font-weight: 800;
}

.sticky-cta strong {
  color: var(--color-yellow);
  font-size: 22px;
}

.sticky-cta a {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border-radius: 999px;
  background: var(--color-coral);
  color: #fff;
  font-weight: 900;
}

@media (max-width: 980px) {
  .hero-inner,
  .future-layout,
  .bonus-layout,
  .voice-layout,
  .pricing-card {
    grid-template-columns: 1fr;
  }

  .problem-grid,
  .benefit-grid,
  .step-grid,
  .curriculum-roadmap {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .concept-flow {
    grid-template-columns: 1fr;
  }

  .flow-arrow {
    transform: rotate(90deg);
    text-align: center;
  }

  .pricing-card {
    text-align: center;
  }

  .price-includes ul {
    columns: 1;
    text-align: left;
  }
}

@media (max-width: 768px) {
  body {
    font-size: 15px;
  }

  .site-header {
    padding: 10px 14px;
  }

  .nav-links {
    display: none;
  }

  .hero-inner {
    padding: 28px 16px 42px;
  }

  .hero-points,
  .mini-reviews,
  .problem-grid,
  .future-cards,
  .benefit-grid,
  .bonus-grid,
  .step-grid,
  .curriculum-roadmap {
    grid-template-columns: 1fr;
  }

  .curriculum-roadmap::before {
    top: 0;
    bottom: 0;
    left: 31px;
    right: auto;
    width: 3px;
    height: auto;
  }

  .section {
    padding: 58px 16px;
  }

  .section-head h2 {
    font-size: 25px;
  }

  .primary-btn {
    width: 100%;
    min-height: 54px;
    padding: 0 18px;
    font-size: 15px;
  }

  .price-main {
    border-radius: 16px;
  }

  .sticky-cta {
    flex-direction: column;
    align-items: stretch;
    border-radius: 18px;
    text-align: center;
  }
}