:root {
  --color-primary: #C4785A;
  --color-primary-dark: #A85E42;
  --color-secondary: #7A9E8A;
  --color-text: #3D3530;
  --color-text-muted: #7A6E6A;
  --color-bg: #FDFAF6;
  --color-bg-subtle: #F5EFE6;
  --color-bg-dark: #3D3530;
  --color-border: #E0D6CC;
  --color-success: #7A9E8A;
  --color-error: #C95252;
  --color-white: #FFFFFF;
  --color-overlay: rgba(61,53,48,.36);
  --color-hero-overlay-sp: linear-gradient(90deg, rgba(253,250,246,.82), rgba(253,250,246,.58));
  --color-hero-overlay-pc: linear-gradient(90deg, rgba(253,250,246,.76), rgba(253,250,246,.42), rgba(253,250,246,.08));
  --color-footer-muted: rgba(255,255,255,.86);
  --font-base: "Noto Sans JP", sans-serif;
  --font-heading: "Zen Old Mincho", serif;
  --fs-h1: 2.6rem;
  --fs-h2: 2.2rem;
  --fs-h3: 1.8rem;
  --fs-body: 1.5rem;
  --fs-small: 1.2rem;
  --fs-label: 1.1rem;
  --line-height-body: 2;
  --line-height-heading: 1.45;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 48px;
  --space-xl: 88px;
  --space-xl-sp: 56px;
  --content-width: 1080px;
  --card-max-width: 360px;
  --page-gutter: 20px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-button: 999px;
  --radius-card: 16px;
  --radius-full: 999px;
  --shadow-card: 0 4px 16px rgba(61,53,48,.07);
  --shadow-hover: 0 8px 24px rgba(61,53,48,.14);
  --shadow-modal: 0 16px 48px rgba(61,53,48,.2);
  --z-base: 0;
  --z-sticky-cta: 100;
  --z-header: 200;
  --z-drawer: 300;
  --z-overlay: 400;
  --z-modal: 500;
  --duration-fast: .15s;
  --duration: .3s;
  --duration-slow: .6s;
  --ease: cubic-bezier(.2,.7,.3,1);
  --ease-out: cubic-bezier(0,.6,.4,1);
  --ease-in: cubic-bezier(.4,0,1,.4);
  --icon-md: 24px;
  --icon-lg: 40px;
  --fs-quote: 6.4rem;
  --header-height: 72px;
  --delay-stagger-1: .1s;
  --delay-stagger-2: .2s;
}

html {
  font-size: 62.5%;
  scroll-behavior: smooth;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-base);
  font-size: var(--fs-body);
  line-height: var(--line-height-body);
  overflow-x: hidden;
}

body.is-drawer-open {
  overflow: hidden;
}

:focus-visible {
  outline: 3px solid var(--color-secondary);
  outline-offset: var(--radius-sm);
}

.section {
  scroll-margin-top: calc(var(--header-height) + var(--space-md));
}

.section:not(.hero) {
  padding: var(--space-xl-sp) 0;
}

.hero + .section {
  padding-top: 40px;
}

.section--subtle {
  background: var(--color-bg-subtle);
}

.section__inner {
  width: min(100%, calc(var(--content-width) + var(--page-gutter) + var(--page-gutter)));
  margin: 0 auto;
  padding: 0 var(--page-gutter);
}

.section__inner--narrow {
  max-width: 600px;
}

.section__inner--faq {
  max-width: 768px;
}

.section__inner--cta {
  max-width: 720px;
}

.section__heading {
  margin-bottom: var(--space-lg);
  text-align: center;
}

.section__title,
.hero__title,
.cta-final__title {
  font-family: var(--font-heading);
  font-size: var(--fs-h2);
  font-weight: 700;
  line-height: var(--line-height-heading);
}

.section__lead {
  max-width: 720px;
  margin: var(--space-sm) auto 0;
  color: var(--color-text-muted);
}

.btn {
  display: inline-flex;
  max-width: 100%;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-button);
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 700;
  line-height: 1.5;
  padding: var(--space-sm) var(--space-md);
  text-align: center;
  overflow-wrap: anywhere;
  transition: background var(--duration-fast) var(--ease), box-shadow var(--duration-fast) var(--ease), transform var(--duration-fast) var(--ease);
}

.btn--primary,
.btn--drawer {
  width: 100%;
}

.btn--header {
  display: none;
  font-size: var(--fs-small);
  min-height: 40px;
  padding: var(--space-xs) var(--space-sm);
}

.btn--large {
  padding: var(--space-sm) var(--space-lg);
}

@media (hover: hover) and (pointer: fine) {
  .btn:hover {
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
  }

  .feature-card:hover,
  .price-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
  }
}

/* === Header === */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  transition: background var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.site-header.is-scrolled {
  background: var(--color-bg);
  box-shadow: var(--shadow-card);
}

.site-header__inner {
  width: min(100%, calc(var(--content-width) + var(--page-gutter) + var(--page-gutter)));
  min-height: var(--header-height);
  margin: 0 auto;
  padding: 0 var(--page-gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.site-header__logo {
  display: inline-flex;
  align-items: center;
}

.site-header__logo img {
  width: clamp(150px, 28vw, 220px);
  height: auto;
}

.site-header__nav {
  display: none;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}

.site-header__nav-link {
  position: relative;
  font-size: var(--fs-small);
  font-weight: 700;
}

.site-header__nav-link::after {
  position: absolute;
  left: 0;
  bottom: calc(var(--space-xs) * -1);
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  content: "";
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease);
}

.site-header__nav-link:hover::after {
  opacity: 1;
}

.hamburger {
  width: 44px;
  height: 44px;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: var(--radius-full);
  background: var(--color-white);
  color: var(--color-text);
  box-shadow: var(--shadow-card);
}

.hamburger__line {
  width: 22px;
  height: 2px;
  border-radius: var(--radius-full);
  background: currentColor;
  transition: transform var(--duration) var(--ease), opacity var(--duration) var(--ease);
}

.hamburger.is-open .hamburger__line:first-child {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.is-open .hamburger__line:nth-child(2) {
  opacity: 0;
}

.hamburger.is-open .hamburger__line:last-child {
  transform: translateY(-8px) rotate(-45deg);
}

.drawer-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-drawer);
  background: var(--color-overlay);
  opacity: 0;
  transition: opacity var(--duration) var(--ease);
}

.drawer-overlay.is-visible {
  opacity: 1;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: var(--z-overlay);
  width: min(88vw, 320px);
  height: 100svh;
  padding: calc(var(--header-height) + var(--space-md)) var(--space-md) var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  background: var(--color-bg);
  box-shadow: var(--shadow-modal);
  transform: translateX(100%);
  transition: transform var(--duration) var(--ease);
}

.drawer.is-open {
  transform: translateX(0);
}

.drawer__link {
  min-height: 44px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  font-weight: 700;
}

/* === S1: Hero === */
.hero {
  position: relative;
  min-height: clamp(520px, 78svh, 680px);
  display: grid;
  align-items: center;
  overflow: hidden;
  margin-top: calc(var(--header-height) * -1);
  padding-top: var(--header-height);
}

.hero__media,
.hero__overlay {
  position: absolute;
  inset: 0;
}

.hero__media {
  width: 100%;
  height: 100%;
  background: var(--color-border);
  background-position: 58% center !important;
  background-size: cover !important;
}

.hero__overlay {
  background: var(--color-hero-overlay-sp);
}

.hero__inner {
  position: relative;
  z-index: var(--z-base);
  width: min(100%, calc(var(--content-width) + var(--page-gutter) + var(--page-gutter)));
  margin: 0 auto;
  padding: 40px var(--page-gutter);
}

.hero__content {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.hero__title {
  font-size: var(--fs-h1);
}

.hero__text {
  margin-top: var(--space-md);
}

.hero .btn {
  margin-top: var(--space-md);
}

.hero__note {
  margin-top: var(--space-sm);
  color: var(--color-text-muted);
  font-size: var(--fs-small);
}

/* === S2: Problem === */
.problem__body {
  display: grid;
  gap: var(--space-sm);
  max-width: 720px;
  margin: var(--space-lg) auto 0;
}

.problem__list {
  margin-top: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  list-style: none;
}

.problem__list li {
  position: relative;
  padding-left: calc(var(--space-md) + var(--space-xs));
}

.problem__list li::before {
  position: absolute;
  left: 0;
  top: .75em;
  width: var(--space-sm);
  height: var(--space-sm);
  border-radius: var(--radius-full);
  background: var(--color-primary);
  content: "";
}

/* === S3: Features === */
.features__grid,
.testimonials__grid,
.price__grid,
.access__grid {
  display: grid;
  gap: var(--space-md);
}

.feature-card,
.price-card,
.testimonial-card {
  border-radius: var(--radius-card);
  background: var(--color-white);
  box-shadow: var(--shadow-card);
}

.feature-card,
.price-card {
  padding: var(--space-md);
  transition: box-shadow var(--duration-fast) var(--ease), transform var(--duration-fast) var(--ease);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  text-align: center;
}

.feature-card__icon {
  width: var(--icon-lg);
  height: var(--icon-lg);
  color: var(--color-secondary);
}

.feature-card__title,
.price-card__title,
.faq-item__heading {
  font-family: var(--font-heading);
  font-size: var(--fs-h3);
  line-height: var(--line-height-heading);
}

.feature-card__title {
  margin: var(--space-sm) 0;
}

/* === S4: About === */
.about__grid {
  display: grid;
  gap: var(--space-lg);
}

.about__photo {
  width: 240px;
  max-width: 100%;
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  border-radius: var(--radius-full);
  background: var(--color-border);
  box-shadow: var(--shadow-card);
}

.about__content {
  display: grid;
  gap: var(--space-sm);
}

.about__content .section__title {
  margin-bottom: var(--space-xs);
}

.badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  list-style: none;
}

.badge-list li {
  border-radius: var(--radius-full);
  background: var(--color-secondary);
  color: var(--color-white);
  font-size: var(--fs-small);
  font-weight: 700;
  padding: var(--space-xs) var(--space-sm);
}

/* === S5: Testimonials === */
.testimonial-card {
  position: relative;
  padding: var(--space-md);
}

.testimonial-card::before {
  position: absolute;
  top: var(--space-xs);
  right: var(--space-md);
  color: var(--color-primary);
  content: "\"";
  font-family: var(--font-heading);
  font-size: var(--fs-quote);
  line-height: 1;
  opacity: .35;
}

.testimonial-card__avatar {
  width: 80px;
  aspect-ratio: 1 / 1;
  margin-bottom: var(--space-sm);
  border-radius: var(--radius-full);
  background: var(--color-border);
}

.testimonial-card cite {
  display: block;
  margin-top: var(--space-sm);
  color: var(--color-text-muted);
  font-size: var(--fs-small);
  font-style: normal;
  text-align: right;
}

/* === S6: Price === */
.price-card {
  position: relative;
  justify-content: center;
}

.price-card--recommended {
  border: 2px solid var(--color-primary);
}

.price-card__badge {
  display: inline-flex;
  margin-bottom: var(--space-sm);
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--fs-label);
  font-weight: 700;
  padding: var(--space-xs) var(--space-sm);
}

.price-card__amount {
  margin: var(--space-sm) 0;
  color: var(--color-primary-dark);
  font-size: var(--fs-h3);
  font-weight: 700;
  line-height: var(--line-height-heading);
}

.price-card__amount span {
  display: block;
  color: var(--color-text-muted);
  font-size: var(--fs-small);
}

.price__notes {
  margin-top: var(--space-md);
  color: var(--color-text-muted);
  font-size: var(--fs-small);
  list-style-position: inside;
}

/* === S7: FAQ === */
.faq__list {
  display: grid;
  gap: var(--space-sm);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  overflow: hidden;
}

.faq-item__button {
  position: relative;
  width: 100%;
  min-height: 56px;
  padding: var(--space-sm) calc(var(--space-lg) + var(--space-xs)) var(--space-sm) var(--space-sm);
  background: transparent;
  color: var(--color-text);
  line-height: 1.55;
  text-align: left;
}

.faq-item__button::after {
  position: absolute;
  top: 50%;
  right: var(--space-sm);
  width: var(--space-sm);
  height: var(--space-sm);
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  content: "";
  transform: translateY(-65%) rotate(45deg);
  transition: transform var(--duration) var(--ease);
}

.faq-item__button[aria-expanded="true"]::after {
  transform: translateY(-35%) rotate(225deg);
}

.faq-item__panel {
  max-height: 0;
  padding: 0 var(--space-sm);
  overflow: hidden;
  transition: max-height var(--duration) var(--ease), padding var(--duration) var(--ease);
}

.faq-item__panel.is-open {
  max-height: 360px;
  padding: 0 var(--space-sm) var(--space-sm);
}

/* === S8: Access === */
.access__map {
  min-height: 280px;
  aspect-ratio: 4 / 3;
  display: grid;
  place-content: center;
  gap: var(--space-xs);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-bg);
  color: var(--color-text-muted);
  text-align: center;
}

.access__map p {
  color: var(--color-text);
  font-family: var(--font-heading);
  font-size: var(--fs-h3);
  font-weight: 700;
}

.access__map span {
  max-width: 28em;
  font-size: var(--fs-small);
  padding: 0 var(--space-sm);
}

.access__info {
  display: grid;
  gap: var(--space-sm);
}

.info-list {
  border-top: 1px solid var(--color-border);
}

.info-list div {
  display: grid;
  gap: var(--space-xs);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.info-list dt {
  color: var(--color-text-muted);
  font-weight: 700;
}

.access__notice {
  border-radius: var(--radius-md);
  background: var(--color-white);
  box-shadow: var(--shadow-card);
  color: var(--color-primary-dark);
  font-weight: 700;
  padding: var(--space-sm);
}

/* === S9: CTA === */
.cta-final {
  background: var(--color-bg-dark);
  color: var(--color-white);
  text-align: center;
}

.cta-final p {
  margin-top: var(--space-md);
}

.cta-final .btn {
  margin-top: var(--space-md);
}

.cta-final__note {
  font-size: var(--fs-small);
  opacity: .9;
}

/* === Sticky CTA === */
.sticky-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-sticky-cta);
  padding: var(--space-xs) var(--space-sm) calc(var(--space-xs) + env(safe-area-inset-bottom));
  background: var(--color-bg);
  box-shadow: var(--shadow-card);
  transform: translateY(110%);
  transition: transform var(--duration) var(--ease-out);
}

.sticky-cta.is-visible:not(.is-hidden) {
  transform: translateY(0);
}

.sticky-cta .btn {
  width: 100%;
}

/* === Footer === */
.site-footer {
  background: var(--color-bg-dark);
  color: var(--color-white);
}

.site-footer__inner {
  width: min(100%, calc(var(--content-width) + var(--page-gutter) + var(--page-gutter)));
  margin: 0 auto;
  padding: var(--space-lg) var(--page-gutter);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-md);
}

.site-footer__brand {
  display: grid;
  gap: var(--space-xs);
}

.site-footer__brand img {
  width: 360px;
  height: auto;
  filter: brightness(0) invert(1);
}

.site-footer__right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-sm);
  text-align: right;
}

.site-footer__notes {
  color: var(--color-footer-muted);
  font-size: var(--fs-small);
  display: grid;
  gap: 4px;
}

.site-footer a {
  text-decoration: underline;
  text-underline-offset: var(--radius-sm);
  font-size: var(--fs-small);
}

/* === Animation === */
.js-fadein {
  opacity: 0;
  transform: translateY(var(--space-sm));
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}

.js-fadein.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.features__grid .js-fadein:nth-child(2) {
  transition-delay: var(--delay-stagger-1);
}

.features__grid .js-fadein:nth-child(3) {
  transition-delay: var(--delay-stagger-2);
}

@media (max-width: 374px) {
  :root {
    --fs-h1: 2.3rem;
    --fs-h2: 2rem;
    --fs-body: 1.4rem;
    --page-gutter: 16px;
    --header-height: 64px;
  }

  .btn {
    padding-inline: var(--space-sm);
  }

  .hero {
    min-height: clamp(500px, 82svh, 640px);
  }

  .hero__inner {
    padding-block: 32px;
  }

  .section__heading {
    margin-bottom: 32px;
  }
}

@media (min-width: 768px) {
  :root {
    --page-gutter: 24px;
  }


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

  .feature-card:last-child {
    grid-column: 1 / -1;
  }

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

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

  .info-list div {
    grid-template-columns: 120px 1fr;
  }

  .btn--primary {
    width: auto;
  }

  .hero .btn,
  .cta-final .btn {
    width: fit-content;
  }

  .sticky-cta .btn {
    width: 100%;
  }
}

@media (min-width: 1024px) {
  :root {
    --fs-h1: 4rem;
    --fs-h2: 2.8rem;
    --fs-h3: 2rem;
    --fs-body: 1.6rem;
    --fs-small: 1.3rem;
    --fs-label: 1.2rem;
  }

  .section:not(.hero) {
    padding: var(--space-xl) 0;
  }

  .hero + .section {
    padding-top: 64px;
  }

  .site-header__nav,
  .btn--header {
    display: flex;
  }

  .site-header__nav-list {
    gap: var(--space-sm);
  }

  .hamburger {
    display: none;
  }

  .hero {
    min-height: clamp(620px, 84svh, 760px);
  }

  .hero__media {
    background-position: center !important;
  }

  .hero__overlay {
    background: var(--color-hero-overlay-pc);
  }

  .hero__content {
    margin: 0;
    text-align: left;
  }

  .hero .btn {
    width: auto;
  }

  .features__grid {
    grid-template-columns: repeat(3, 1fr);
    align-items: stretch;
  }

  .feature-card:last-child {
    grid-column: auto;
  }

  .about__grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .about__photo {
    width: 320px;
  }

  .sticky-cta {
    display: none;
  }

}

@media (min-width: 1120px) {
  .site-header__nav-list {
    gap: var(--space-md);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    scroll-behavior: auto !important;
    transition: none !important;
  }

  .js-fadein {
    opacity: 1;
    transform: none;
  }
}