/* ============================================
   CSS Variables & Reset
   ============================================ */
:root {
  --color-bg:        #F7F5F2;
  --color-text:      #2F2F2B;
  --color-primary:   #8B9A9B;
  --color-secondary: #A8B5A0;
  --color-accent:    #C9A98C;
  --color-soft:      #EBE7E1;
  --color-line:      #D8D3CB;
  --font-heading:    'Yu Gothic UI', 'YuGothic', 'Meiryo', sans-serif;
  --font-body:       'Yu Gothic UI', 'YuGothic', 'Meiryo', sans-serif;
  --transition-fade: opacity 0.75s ease, transform 0.75s ease;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 15px;
  line-height: 1.95;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Layout
   ============================================ */
.container {
  max-width: 480px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   Scroll Fade-in
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: var(--transition-fade);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Image Placeholders
   ============================================ */
.img-placeholder {
  background: linear-gradient(
    135deg,
    #EBE7E1 0%,
    #E0DAD2 40%,
    #D3CEC6 75%,
    #CAC4BB 100%
  );
  border-radius: 12px;
  position: relative;
  overflow: hidden;
}

.img-placeholder::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.25) 0%,
    transparent 55%
  );
}

/* ============================================
   CTA Buttons
   ============================================ */
.cta-wrap {
  text-align: center;
}

.cta-btn {
  display: inline-block;
  background-color: var(--color-accent);
  color: #fff;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 18px 40px;
  border-radius: 60px;
  text-decoration: none;
  box-shadow: 0 4px 24px rgba(201, 169, 140, 0.35);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.cta-btn:hover,
.cta-btn:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 10px 32px rgba(201, 169, 140, 0.5);
  outline: none;
}

.cta-btn--large {
  font-size: 16px;
  padding: 22px 48px;
}

.cta-subtext {
  font-size: 12px;
  color: #8A8A88;
  margin-top: 20px;
  line-height: 1.9;
}

/* ============================================
   Section Base
   ============================================ */
.section {
  padding: 88px 0;
}

.section__heading {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.04em;
  color: var(--color-text);
  margin-bottom: 24px;
}

.section__lead {
  font-size: 14px;
  line-height: 2.0;
  color: #5C5C5A;
  margin-bottom: 48px;
}

/* ============================================
   ① Hero
   ============================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  padding: 0;
  color: #fff;
  background-color: var(--color-soft);
  background-image: linear-gradient(
      to bottom,
      rgba(247,245,242,0) 0%,
      rgba(247,245,242,0) 36%,
      rgba(0,0,0,0.7) 100%
    ),
    url('images/hero_view.png');
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.05) 0%, rgba(0,0,0,0.25) 24%, rgba(0,0,0,0.7) 100%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 100svh;
  max-width: 720px;
  padding: 0 24px 56px;
}

.hero__label,
.hero__headline,
.hero__sub,
.hero__scroll {
  text-shadow: 0 16px 32px rgba(0,0,0,0.35);
}

.hero__label {
  display: inline-block;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.16em;
  color: rgba(255,255,255,0.9);
  border: 1px solid rgba(255,255,255,0.85);
  border-radius: 999px;
  padding: 7px 18px;
  margin-bottom: 24px;
  background-color: rgba(255,255,255,0.08);
}

.hero__headline {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: #fff;
  margin-bottom: 28px;
  text-align: left;
}

.hero__sub {
  max-width: 720px;
  font-size: 1rem;
  line-height: 1.9;
  color: rgba(255,255,255,0.9);
  text-align: left;
  margin-bottom: 44px;
}

.hero__sub p + p {
  margin-top: 18px;
}

.hero__scroll {
  display: inline-flex;
  align-items: center;
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.95);
  text-decoration: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.hero__scroll:hover,
.hero__scroll:focus-visible {
  opacity: 0.85;
  transform: translateY(-2px);
}

/* ============================================
   ② Pain Points
   ============================================ */
.pain {
  background-color: var(--color-soft);
}

.pain__cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.pain__card {
  background-color: var(--color-bg);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 10px 10px 0;
  padding: 24px 20px;
}

.pain__card-title {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--color-text);
  margin-bottom: 14px;
}

.pain__card p {
  font-size: 13px;
  line-height: 2.0;
  color: #5C5C5A;
}

.pain__card p + p {
  margin-top: 12px;
}

/* ============================================
   ③ Reason
   ============================================ */
.reason {
  background-color: var(--color-bg);
}

.reason__body {
  font-size: 14px;
  line-height: 2.0;
  color: #5C5C5A;
}

.reason__body > p + p,
.reason__body > p + div,
.reason__body > div + p {
  margin-top: 24px;
}

.reason__emphasis {
  padding: 22px 20px;
  border-left: 3px solid var(--color-secondary);
  background: linear-gradient(
    to right,
    rgba(168, 181, 160, 0.1),
    transparent
  );
  border-radius: 0 8px 8px 0;
  margin: 24px 0;
}

.reason__emphasis strong {
  color: var(--color-text);
  font-weight: 500;
}

.reason__closing {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 400;
  color: var(--color-text);
  text-align: center;
  margin-top: 28px;
  letter-spacing: 0.04em;
}

/* ============================================
   ④ Product
   ============================================ */
.product {
  background-color: var(--color-soft);
}

.product__vols {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 40px;
}

.product__vol {
  background-color: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: 10px;
  padding: 22px 20px;
}

.product__vol-num {
  display: inline-block;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  background: rgba(139, 154, 155, 0.12);
  padding: 3px 12px;
  border-radius: 30px;
  margin-bottom: 10px;
}

.product__vol-title {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-text);
  margin-bottom: 10px;
}

.product__vol p {
  font-size: 13px;
  line-height: 1.95;
  color: #6A6A68;
}

.product__bonus {
  background: linear-gradient(
    135deg,
    rgba(201, 169, 140, 0.1) 0%,
    rgba(168, 181, 160, 0.08) 100%
  );
  border: 1px solid var(--color-accent);
  border-radius: 12px;
  padding: 32px 24px;
  text-align: center;
  margin-bottom: 40px;
}

.product__bonus-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 14px;
}

.product__bonus-title {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 20px;
}

.product__bonus p {
  font-size: 13px;
  line-height: 2.0;
  color: #5C5C5A;
}

.product__bonus p + p {
  margin-top: 12px;
}

/* ============================================
   ⑤ Roadmap
   ============================================ */
.roadmap {
  background-color: var(--color-bg);
}

.roadmap__timeline {
  list-style: none;
  position: relative;
  margin-bottom: 48px;
  padding-left: 0;
}

.roadmap__timeline::before {
  content: '';
  position: absolute;
  left: 27px;
  top: 32px;
  bottom: 32px;
  width: 1px;
  background: var(--color-line);
}

.roadmap__item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 10px 0;
  position: relative;
}

.roadmap__day {
  flex-shrink: 0;
  width: 55px;
  height: 55px;
  border: 1.5px solid var(--color-primary);
  border-radius: 50%;
  background-color: var(--color-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.roadmap__day-label {
  font-size: 8px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 1px;
}

.roadmap__day-num {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 400;
  color: var(--color-text);
  line-height: 1;
}

.roadmap__day--final {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.roadmap__day--final .roadmap__day-label {
  color: rgba(255, 255, 255, 0.75);
}

.roadmap__day--final .roadmap__day-num {
  color: #fff;
}

.roadmap__content {
  padding-top: 10px;
}

.roadmap__content h3 {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 4px;
}

.roadmap__content p {
  font-size: 13px;
  color: #7A7A78;
  line-height: 1.6;
}

.roadmap__item--final .roadmap__content h3 {
  color: var(--color-primary);
}

.roadmap__closing {
  font-size: 14px;
  line-height: 2.05;
  color: #5C5C5A;
  text-align: center;
  font-style: italic;
  padding: 0 8px;
}

/* ============================================
   ⑥ Future
   ============================================ */
.future {
  background-color: var(--color-soft);
}

.future__body {
  font-size: 14px;
  line-height: 2.05;
  color: #5C5C5A;
  margin-bottom: 48px;
}

.future__body p + p {
  margin-top: 24px;
}

.future__body strong {
  color: var(--color-text);
  font-weight: 500;
}

/* ============================================
   ⑦ About
   ============================================ */
.about {
  background-color: var(--color-bg);
}

.about__profile {
  display: flex;
  justify-content: center;
  margin-bottom: 32px;
}

.about__avatar-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about__avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
  border: 3px solid var(--color-bg);
}

.about__body {
  font-size: 14px;
  line-height: 2.0;
  color: #5C5C5A;
}

.about__body p + p {
  margin-top: 20px;
}

/* ============================================
   ⑧ FAQ
   ============================================ */
.faq {
  background-color: var(--color-soft);
}

.faq__list {
  display: block;
}

.faq__item {
  border-bottom: 1px solid var(--color-line);
}

.faq__item:first-child {
  border-top: 1px solid var(--color-line);
}

.faq__question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 20px 0;
  cursor: pointer;
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.65;
  user-select: none;
  transition: color 0.2s ease;
}

.faq__question:hover {
  color: var(--color-primary);
}

.faq__chevron {
  flex-shrink: 0;
  font-size: 22px;
  color: var(--color-primary);
  line-height: 1;
  transition: transform 0.35s ease;
  display: inline-block;
}

.faq__item.open .faq__chevron {
  transform: rotate(90deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq__item.open .faq__answer {
  max-height: 240px;
}

.faq__answer-inner {
  padding: 0 0 22px 0;
  font-size: 13px;
  line-height: 1.95;
  color: #6A6A68;
}

/* ============================================
   ⑨ Closing
   ============================================ */
.closing {
  background-color: var(--color-bg);
}

.closing__body {
  font-size: 14px;
  line-height: 2.05;
  color: #5C5C5A;
  margin-bottom: 48px;
}

.closing__body p + p {
  margin-top: 24px;
}

.closing__price {
  background-color: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: 14px;
  padding: 36px 28px;
  text-align: center;
  margin-bottom: 40px;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
}

.closing__price-label {
  font-size: 13px;
  font-weight: 300;
  color: #7A7A78;
  line-height: 1.85;
  margin-bottom: 16px;
}

.closing__price-amount {
  font-family: var(--font-heading);
  font-size: 40px;
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: 0.02em;
  line-height: 1;
}

.closing__price-tax {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 300;
  color: #8A8A88;
  letter-spacing: 0.03em;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background-color: #2F2F2B;
  padding: 52px 0;
  text-align: center;
}

.footer__name {
  font-size: 12px;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: #9A9A98;
  margin-bottom: 24px;
}

.footer__nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  margin-bottom: 32px;
}

.footer__link {
  font-size: 12px;
  font-weight: 300;
  letter-spacing: 0.06em;
  color: #7A7A78;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer__link:hover {
  color: #D8D3CB;
}

.footer__copy {
  font-size: 11px;
  font-weight: 300;
  color: #5A5A58;
  letter-spacing: 0.08em;
}

/* ============================================
   Responsive — Tablet (600px+)
   ============================================ */
@media (min-width: 600px) {
  .container {
    max-width: 580px;
  }

  body {
    font-size: 16px;
  }

  .hero__headline {
    font-size: 28px;
  }

  .section__heading {
    font-size: 24px;
  }

  .pain__card p,
  .reason__body,
  .future__body,
  .about__body,
  .closing__body {
    font-size: 15px;
  }

  .cta-btn {
    font-size: 16px;
  }
}

/* ============================================
   Responsive — Desktop (768px+)
   ============================================ */
@media (min-width: 768px) {
  .container {
    max-width: 720px;
    padding: 0 40px;
  }

  .hero {
    padding: 100px 0 80px;
  }

  .hero__headline {
    font-size: 32px;
  }

  .section {
    padding: 110px 0;
  }

  .section__heading {
    font-size: 26px;
  }

  .footer__nav {
    flex-direction: row;
    justify-content: center;
    gap: 36px;
  }
}