/* ============================================
   KanPon1 Corporate Site - Style Sheet
   Design: Feminine Wellness / Eastern Wisdom
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --color-sage: #8ca391;
  --color-sage-light: #cbd6ce;
  --color-sage-dark: #6b8571;
  --color-cream: #fdfaf2;
  --color-beige: #f7f1e9;
  --color-gold: #c5a059;
  --color-rose-gold: #d4afb9;
  --color-rose-light: #f0dfe3;
  --color-text-main: #4a4e4d;
  --color-text-light: #7e8282;
  --color-text-white: #fdfaf2;
  --color-white: #ffffff;
  --color-border: #e8e0d6;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-4xl: 96px;
  --spacing-5xl: 128px;

  /* Font sizes */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Layout */
  --max-width: 1200px;
  --header-height: 80px;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: "Noto Sans JP", sans-serif;
  font-size: var(--font-size-base);
  line-height: 1.8;
  color: var(--color-text-main);
  background-color: var(--color-cream);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: "Shippori Mincho", "Noto Serif JP", serif;
  line-height: 1.4;
  font-weight: 400;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.3s ease;
}

a:hover {
  opacity: 0.7;
}

a:focus,
button:focus {
  outline: 2px solid var(--color-sage);
  outline-offset: 2px;
}

ul, ol {
  list-style: none;
}

/* --- Utility --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section-label {
  font-family: "Noto Sans JP", sans-serif;
  font-size: var(--font-size-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-light);
  font-weight: 400;
}

.line-accent::after {
  content: "";
  display: block;
  width: 40px;
  height: 1px;
  background-color: var(--color-rose-gold);
  margin-top: var(--spacing-lg);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: rgba(253, 250, 242, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 100;
  border-bottom: 1px solid rgba(203, 214, 206, 0.3);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.header__logo {
  font-family: "Shippori Mincho", serif;
  font-size: var(--font-size-xl);
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-sage-dark);
}

.header__nav {
  display: none;
}

.header__nav-list {
  display: flex;
  gap: var(--spacing-xl);
}

.header__nav-link {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  letter-spacing: 0.05em;
  position: relative;
}

.header__nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-sage);
  transition: width 0.3s ease;
}

.header__nav-link:hover {
  opacity: 1;
  color: var(--color-sage-dark);
}

.header__nav-link:hover::after {
  width: 100%;
}

.header__cta {
  display: none;
  font-size: var(--font-size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 1px solid var(--color-sage);
  color: var(--color-sage-dark);
  border-radius: 100px;
  transition: all 0.3s ease;
}

.header__cta:hover {
  background-color: var(--color-sage);
  color: var(--color-white);
  opacity: 1;
}

/* Hamburger Menu */
.header__menu-btn {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.header__menu-btn span {
  display: block;
  width: 24px;
  height: 1.5px;
  background-color: var(--color-text-main);
  transition: all 0.3s ease;
}

.header__menu-btn[aria-expanded="true"] span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 5px);
}

.header__menu-btn[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.header__menu-btn[aria-expanded="true"] span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -5px);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-cream);
  z-index: 99;
  padding: var(--spacing-3xl) var(--spacing-lg);
}

.mobile-menu.is-open {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xl);
}

.mobile-menu__link {
  font-family: "Shippori Mincho", serif;
  font-size: var(--font-size-2xl);
  color: var(--color-text-main);
}

.mobile-menu__cta {
  margin-top: var(--spacing-lg);
  font-size: var(--font-size-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: var(--spacing-md) var(--spacing-2xl);
  border: 1px solid var(--color-sage);
  color: var(--color-sage-dark);
  border-radius: 100px;
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
  background-color: var(--color-beige);
}

/* Flowing silk gradient background */
.hero__silk {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero__silk-layer {
  position: absolute;
  top: -30%;
  left: -30%;
  width: 160%;
  height: 160%;
}

.hero__silk-layer--1 {
  background:
    radial-gradient(ellipse 50% 40% at 30% 35%, rgba(212, 175, 185, 0.6) 0%, transparent 70%),
    radial-gradient(ellipse 45% 50% at 70% 65%, rgba(140, 163, 145, 0.5) 0%, transparent 65%);
  animation: silk-drift-1 12s ease-in-out infinite;
}

.hero__silk-layer--2 {
  background:
    radial-gradient(ellipse 55% 45% at 60% 25%, rgba(240, 223, 227, 0.65) 0%, transparent 65%),
    radial-gradient(ellipse 40% 55% at 25% 70%, rgba(197, 160, 89, 0.18) 0%, transparent 60%);
  animation: silk-drift-2 16s ease-in-out infinite;
}

.hero__silk-layer--3 {
  background:
    radial-gradient(ellipse 60% 40% at 45% 50%, rgba(203, 214, 206, 0.5) 0%, transparent 55%),
    radial-gradient(ellipse 35% 50% at 80% 40%, rgba(212, 175, 185, 0.35) 0%, transparent 60%);
  animation: silk-drift-3 20s ease-in-out infinite;
}

@keyframes silk-drift-1 {
  0% {
    transform: translate(0, 0) rotate(0deg);
  }
  25% {
    transform: translate(12%, -8%) rotate(4deg);
  }
  50% {
    transform: translate(-6%, 10%) rotate(-3deg);
  }
  75% {
    transform: translate(8%, -4%) rotate(2deg);
  }
  100% {
    transform: translate(0, 0) rotate(0deg);
  }
}

@keyframes silk-drift-2 {
  0% {
    transform: translate(0, 0) rotate(0deg);
  }
  25% {
    transform: translate(-10%, 6%) rotate(-5deg);
  }
  50% {
    transform: translate(8%, -10%) rotate(3deg);
  }
  75% {
    transform: translate(-4%, 4%) rotate(-2deg);
  }
  100% {
    transform: translate(0, 0) rotate(0deg);
  }
}

@keyframes silk-drift-3 {
  0% {
    transform: translate(0, 0) rotate(0deg);
  }
  33% {
    transform: translate(6%, 8%) rotate(3deg);
  }
  66% {
    transform: translate(-10%, -6%) rotate(-4deg);
  }
  100% {
    transform: translate(0, 0) rotate(0deg);
  }
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-3xl) var(--spacing-lg);
}

.hero__label {
  font-family: "Noto Sans JP", sans-serif;
  font-size: var(--font-size-xs);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-sage);
  margin-bottom: var(--spacing-lg);
}

.hero__title {
  font-size: var(--font-size-3xl);
  color: var(--color-text-main);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.hero__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 2;
  max-width: 480px;
  margin-bottom: var(--spacing-2xl);
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  letter-spacing: 0.05em;
  padding: var(--spacing-md) var(--spacing-2xl);
  border-radius: 100px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  white-space: nowrap;
}

.btn:focus {
  outline: 2px solid var(--color-sage);
  outline-offset: 2px;
}

.btn--primary {
  background-color: var(--color-sage);
  color: var(--color-white);
}

.btn--primary:hover {
  background-color: var(--color-sage-dark);
  opacity: 1;
}

.btn--outline {
  background-color: transparent;
  border: 1px solid var(--color-sage-light);
  color: var(--color-sage-dark);
}

.btn--outline:hover {
  background-color: var(--color-sage);
  color: var(--color-white);
  border-color: var(--color-sage);
  opacity: 1;
}

/* Hero visual (product tube) */
.hero__visual {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
}

.hero__visual-tube {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-45deg);
  width: 100%;
  height: auto;
  opacity: 0.12;
  filter: drop-shadow(0 16px 40px rgba(0, 0, 0, 0.12));
}

/* Decorative organic shape */
.hero__deco {
  position: absolute;
  right: -80px;
  bottom: -60px;
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, var(--color-sage-light), var(--color-rose-light));
  border-radius: 63% 37% 54% 46% / 45% 48% 52% 55%;
  opacity: 0.2;
  z-index: 1;
}

/* --- Philosophy Section --- */
.philosophy {
  padding: var(--spacing-4xl) 0;
  background-color: var(--color-cream);
}

.philosophy__header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.philosophy__label {
  font-size: var(--font-size-xs);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-sage);
  margin-bottom: var(--spacing-md);
}

.philosophy__title {
  font-size: clamp(1.8rem, 5.5vw, 3rem);
  color: var(--color-text-main);
  line-height: 1.8;
  letter-spacing: 0.02em;
}

.philosophy__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
}

.philosophy__card {
  position: relative;
  background-color: var(--color-white);
  padding: var(--spacing-2xl);
  border-radius: 16px;
  box-shadow: 0 20px 40px -15px rgba(140, 163, 145, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.philosophy__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 48px -15px rgba(140, 163, 145, 0.15);
}

.philosophy__card-number {
  font-family: "Shippori Mincho", serif;
  font-size: var(--font-size-4xl);
  color: var(--color-sage-light);
  line-height: 1;
  margin-bottom: var(--spacing-md);
}

.philosophy__card-title {
  font-size: var(--font-size-xl);
  color: var(--color-text-main);
  margin-bottom: var(--spacing-md);
}

.philosophy__card-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.9;
}

.philosophy__mission {
  margin-top: var(--spacing-3xl);
  text-align: center;
  padding: var(--spacing-2xl);
  border-top: 1px solid var(--color-border);
}

.philosophy__mission-label {
  font-size: var(--font-size-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-sage);
  margin-bottom: var(--spacing-md);
}

.philosophy__mission-text {
  font-family: "Shippori Mincho", serif;
  font-size: var(--font-size-lg);
  color: var(--color-text-main);
  line-height: 2;
  max-width: 640px;
  margin: 0 auto;
}

/* --- Specialist Section --- */
.specialist {
  padding: var(--spacing-4xl) 0;
  background-color: var(--color-beige);
}

.specialist__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.specialist__image-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
}

.specialist__image {
  width: 240px;
  height: 300px;
  object-fit: cover;
  border-radius: 40% 60% 70% 30% / 40% 40% 60% 60%;
  box-shadow: 0 20px 40px -15px rgba(140, 163, 145, 0.2);
}

.specialist__image-deco {
  position: absolute;
  top: -20px;
  right: calc(50% - 150px);
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--color-rose-light), var(--color-sage-light));
  border-radius: 63% 37% 54% 46% / 45% 48% 52% 55%;
  opacity: 0.3;
  z-index: -1;
}

.specialist__content {
  text-align: center;
}

.specialist__label {
  font-size: var(--font-size-xs);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-sage);
  margin-bottom: var(--spacing-sm);
}

.specialist__sub-label {
  font-family: "Shippori Mincho", serif;
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xs);
}

.specialist__role {
  font-size: var(--font-size-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--spacing-lg);
}

.specialist__name {
  font-size: var(--font-size-3xl);
  color: var(--color-text-main);
  margin-bottom: var(--spacing-sm);
}

.specialist__name-en {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
}

.specialist__bio {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 2;
  margin-bottom: var(--spacing-xl);
}

.specialist__quote {
  position: relative;
  padding: var(--spacing-xl);
  background-color: rgba(255, 255, 255, 0.6);
  border-radius: 12px;
  border-left: 3px solid var(--color-rose-gold);
}

.specialist__quote p {
  font-family: "Shippori Mincho", serif;
  font-size: var(--font-size-sm);
  color: var(--color-text-main);
  line-height: 2;
  font-style: italic;
}

/* --- Product Section --- */
.product {
  padding: var(--spacing-4xl) 0;
  background-color: var(--color-cream);
}

.product__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.product__image-wrapper {
  display: flex;
  justify-content: center;
  position: relative;
}

.product__image {
  max-width: 100%;
  width: 100%;
  border-radius: 0;
  filter: drop-shadow(0 30px 40px rgba(140, 163, 145, 0.2));
}

.product__content {
  text-align: center;
}

.product__label {
  font-size: var(--font-size-xs);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-sage);
  margin-bottom: var(--spacing-sm);
}

.product__title {
  font-family: "Shippori Mincho", serif;
  font-size: clamp(1.8rem, 5.5vw, 3rem);
  color: var(--color-text-main);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.02em;
}

.product__tagline {
  font-family: "Shippori Mincho", serif;
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.8;
}

.product__features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
  text-align: left;
}

.product__feature {
  padding: var(--spacing-lg);
  background-color: var(--color-white);
  border-radius: 12px;
  box-shadow: 0 8px 24px -8px rgba(140, 163, 145, 0.08);
}

.product__feature-title {
  font-size: var(--font-size-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-sage-dark);
  margin-bottom: var(--spacing-sm);
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 500;
}

.product__feature-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.9;
}

.product__specs {
  display: flex;
  gap: var(--spacing-2xl);
  justify-content: center;
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.product__cta {
  margin-top: var(--spacing-2xl);
}

.product__spec-label {
  font-size: var(--font-size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-sage);
  margin-bottom: var(--spacing-xs);
}

.product__spec-value {
  font-family: "Shippori Mincho", serif;
  font-size: var(--font-size-sm);
  color: var(--color-text-main);
}

/* --- Quality Section --- */
.quality {
  padding: var(--spacing-4xl) 0;
  background-color: var(--color-white);
}

.quality__header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.quality__label {
  font-size: var(--font-size-xs);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-sage);
  margin-bottom: var(--spacing-md);
}

.quality__title {
  font-family: "Shippori Mincho", serif;
  font-size: clamp(1.8rem, 5.5vw, 3rem);
  color: var(--color-text-main);
  letter-spacing: 0.02em;
}

.quality__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

.quality__card {
  padding: var(--spacing-2xl);
  background-color: var(--color-cream);
  border-radius: 16px;
  text-align: center;
}

.quality__card-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-sage-light);
  border-radius: 50%;
  color: var(--color-sage-dark);
}

.quality__card-icon svg {
  width: 24px;
  height: 24px;
}

.quality__card-title {
  font-size: var(--font-size-base);
  color: var(--color-text-main);
  margin-bottom: var(--spacing-md);
}

.quality__card-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.9;
}

/* --- Company Section --- */
.company {
  padding: var(--spacing-4xl) 0;
  background-color: var(--color-beige);
}

.company__header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.company__label {
  font-size: var(--font-size-xs);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-sage);
  margin-bottom: var(--spacing-md);
}

.company__title {
  font-family: "Shippori Mincho", serif;
  font-size: clamp(1.8rem, 5.5vw, 3rem);
  color: var(--color-text-main);
  letter-spacing: 0.02em;
}

.company__table {
  max-width: 640px;
  margin: 0 auto;
}

.company__row {
  display: grid;
  grid-template-columns: 140px 1fr;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-border);
  gap: var(--spacing-md);
}

.company__row:last-child {
  border-bottom: none;
}

.company__row dt {
  font-size: var(--font-size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-sage);
  padding-top: 2px;
}

.company__row dd {
  font-size: var(--font-size-sm);
  color: var(--color-text-main);
  line-height: 1.8;
}

/* --- CTA Section --- */
.cta {
  padding: var(--spacing-5xl) var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-sage-light) 0%, var(--color-sage) 100%);
  text-align: center;
}

.cta__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-2xl);
}

.cta__text-col {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cta__title {
  font-size: var(--font-size-3xl);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.cta__text {
  font-size: var(--font-size-base);
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
  line-height: 2;
}

.cta__qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

.cta__qr-image {
  width: 180px;
  height: 180px;
  background-color: var(--color-white);
  border-radius: 20px;
  padding: var(--spacing-sm);
  box-shadow: 0 12px 32px -8px rgba(0, 0, 0, 0.2);
}

.cta__qr-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.cta__qr-label {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.75);
  letter-spacing: 0.1em;
}

.cta__line-btn {
  display: inline-block;
  margin-top: var(--spacing-md);
}

.cta__line-btn img {
  height: 52px;
  width: auto;
}

/* Mobile: CTA adjustments */
@media (max-width: 767px) {
  .cta {
    padding: var(--spacing-4xl) var(--spacing-md);
  }

  .cta__title {
    font-size: var(--font-size-2xl);
  }

  .cta__qr-image {
    width: 140px;
    height: 140px;
    opacity: 0.7;
  }

  .cta__line-btn img {
    height: 56px;
  }
}

.btn--white {
  background-color: var(--color-white);
  color: var(--color-sage-dark);
  margin-top: var(--spacing-lg);
}

.btn--white:hover {
  background-color: var(--color-cream);
  opacity: 1;
}

.btn--amazon {
  background-color: #ff9900;
  color: #111;
  font-weight: 700;
}

.btn--amazon:hover {
  background-color: #e68a00;
  opacity: 1;
}

/* --- Footer --- */
.footer {
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  background-color: var(--color-text-main);
  color: rgba(255, 255, 255, 0.6);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer__brand-name {
  font-family: "Shippori Mincho", serif;
  font-size: var(--font-size-xl);
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer__brand-text {
  font-size: var(--font-size-sm);
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.5);
}

.footer__nav-title {
  font-size: var(--font-size-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: var(--spacing-md);
  font-family: "Noto Sans JP", sans-serif;
}

.footer__nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__nav-link {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.3s ease;
}

.footer__nav-link:hover {
  color: var(--color-white);
  opacity: 1;
}

.footer__bottom {
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  text-align: center;
}

.footer__copyright {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.35);
}

.footer__tagline {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.25);
  font-style: italic;
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* --- Responsive: Tablet (768px+) --- */
@media (min-width: 768px) {
  :root {
    --font-size-5xl: 3.5rem;
    --font-size-4xl: 2.5rem;
    --font-size-3xl: 2rem;
  }

  .container {
    padding: 0 var(--spacing-xl);
  }

  .header__nav {
    display: block;
  }

  .header__cta {
    display: inline-flex;
  }

  .header__menu-btn {
    display: none;
  }

  .hero__title {
    font-size: var(--font-size-4xl);
  }

  .hero__visual-tube {
    top: 40%;
    left: auto;
    right: 10%;
    transform: rotate(-45deg);
    width: 70%;
    max-width: 700px;
    opacity: 1;
  }

  .hero__actions {
    flex-direction: row;
  }

  .philosophy__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .specialist__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
  }

  .specialist__content {
    text-align: left;
  }

  .specialist__image {
    width: 320px;
    height: 400px;
  }

  .product__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
  }

  .product__content {
    text-align: left;
  }

  .product__specs {
    justify-content: flex-start;
  }

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

  .footer__inner {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }

  .cta {
    padding: var(--spacing-5xl) var(--spacing-2xl);
    text-align: left;
  }

  .cta__content {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-3xl);
  }

  .cta__text-col {
    flex: 1 1 55%;
    align-items: flex-start;
  }

  .cta__title {
    font-size: var(--font-size-4xl);
  }

  .cta__text {
    font-size: var(--font-size-lg);
  }

  .cta__qr {
    flex: 0 0 auto;
  }

  .cta__line-btn {
    opacity: 0.8;
  }

  .cta__line-btn:hover {
    opacity: 1;
  }
}

/* --- Responsive: Desktop (1024px+) --- */
@media (min-width: 1024px) {
  .hero__content {
    max-width: 560px;
    margin: 0;
    margin-left: calc((100vw - var(--max-width)) / 2 + var(--spacing-xl));
  }

  .hero__visual-tube {
    right: 5%;
    width: 65%;
    max-width: 900px;
  }


  .hero__deco {
    width: 500px;
    height: 500px;
    right: -100px;
    bottom: -100px;
  }

  .product__image {
    max-width: 100%;
  }

  .specialist__image {
    width: 380px;
    height: 480px;
  }

  .company__row {
    grid-template-columns: 180px 1fr;
  }

  .cta__title {
    font-size: var(--font-size-5xl);
  }

  .cta__qr-image {
    width: 200px;
    height: 200px;
  }
}

/* --- Print --- */
@media print {
  .header,
  .cta,
  .hero__actions {
    display: none;
  }

  body {
    background-color: white;
    color: black;
  }
}



/* ============================================
   LP: KP1 Natural Essence - How to Use
   Landing Page Styles (.lp- namespace)
   Redesign: Illustration-first hero
   ============================================ */

/* --- LP Hero: Illustration-First --- */
.lp-hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--header-height) + var(--spacing-lg)) var(--spacing-md) var(--spacing-xl);
  overflow: hidden;
  background-color: var(--color-beige);
}

.lp-hero__silk {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.lp-hero__silk-layer {
  position: absolute;
  top: -30%;
  left: -30%;
  width: 160%;
  height: 160%;
}

.lp-hero__silk-layer--1 {
  background:
    radial-gradient(ellipse 50% 40% at 35% 40%, rgba(212, 175, 185, 0.5) 0%, transparent 70%),
    radial-gradient(ellipse 45% 50% at 65% 60%, rgba(140, 163, 145, 0.4) 0%, transparent 65%);
  animation: silk-drift-1 12s ease-in-out infinite;
}

.lp-hero__silk-layer--2 {
  background:
    radial-gradient(ellipse 55% 45% at 55% 30%, rgba(240, 223, 227, 0.55) 0%, transparent 65%),
    radial-gradient(ellipse 40% 55% at 30% 70%, rgba(203, 214, 206, 0.4) 0%, transparent 60%);
  animation: silk-drift-2 16s ease-in-out infinite;
}

.lp-hero__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 100%;
  max-width: var(--max-width);
  gap: var(--spacing-xl);
}

.lp-hero__text {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lp-hero__label {
  font-family: "Noto Sans JP", sans-serif;
  font-size: var(--font-size-xs);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-sage);
  margin-bottom: var(--spacing-md);
}

.lp-hero__headline {
  font-size: var(--font-size-4xl);
  color: var(--color-text-main);
  line-height: 1.4;
  margin-bottom: var(--spacing-xl);
  letter-spacing: 0.12em;
}

.lp-hero__illustration {
  width: 100%;
  max-width: 420px;
}

.lp-hero__illustration img {
  width: 100%;
  height: auto;
  -webkit-mask-image: linear-gradient(to bottom, black 65%, transparent 100%);
  mask-image: linear-gradient(to bottom, black 65%, transparent 100%);
}

.lp-hero__location {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-lg);
}

.lp-hero__location-name {
  font-family: "Shippori Mincho", serif;
  font-size: var(--font-size-xl);
  color: var(--color-text-main);
  letter-spacing: 0.12em;
}

.lp-hero__location-reading {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  letter-spacing: 0.05em;
}

.lp-hero__location-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.8;
}

/* --- LP Sales: Bold Full-Width --- */
.lp-sales {
  padding: var(--spacing-4xl) var(--spacing-lg);
  background-color: var(--color-cream);
}

.lp-sales__intro {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
}

.lp-sales__product-img {
  width: 280px;
  height: auto;
  filter: drop-shadow(0 8px 32px rgba(140, 163, 145, 0.25));
}

.lp-sales__copy {
  text-align: center;
}

.lp-sales__title {
  font-size: var(--font-size-2xl);
  color: var(--color-text-main);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.lp-sales__text {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: 2;
  max-width: 720px;
  margin: 0 auto;
}

.lp-sales__features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-3xl);
}

.lp-sales__feature {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  background-color: var(--color-white);
  border-radius: 16px;
  box-shadow: 0 8px 24px -8px rgba(140, 163, 145, 0.1);
}

.lp-sales__feature-label {
  font-size: var(--font-size-sm);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-sage);
  margin-bottom: var(--spacing-sm);
}

.lp-sales__feature-text {
  font-size: var(--font-size-lg);
  color: var(--color-text-main);
  font-family: "Shippori Mincho", serif;
}

.lp-sales__buy {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

/* 全成分表示アコーディオン */
.lp-sales__ingredients {
  border: 1px solid var(--color-border);
  border-radius: 16px;
  overflow: hidden;
}

.lp-sales__ingredients summary {
  cursor: pointer;
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: var(--font-size-base);
  color: var(--color-sage-dark);
  letter-spacing: 0.05em;
  background-color: var(--color-white);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.lp-sales__ingredients summary::-webkit-details-marker {
  display: none;
}

.lp-sales__ingredients summary::after {
  content: "+";
  font-size: var(--font-size-xl);
  color: var(--color-sage);
  transition: transform 0.3s ease;
}

.lp-sales__ingredients[open] summary::after {
  transform: rotate(45deg);
}

.lp-sales__ingredients p {
  padding: var(--spacing-md) var(--spacing-xl) var(--spacing-xl);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 2.2;
  background-color: var(--color-white);
}

/* 能書情報 */
.lp-sales__notices {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
  padding: var(--spacing-2xl);
  background-color: var(--color-white);
  border-radius: 16px;
  border: 1px solid var(--color-border);
}

.lp-sales__notice-title {
  font-family: "Noto Sans JP", sans-serif;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-sage-dark);
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-sm);
}

.lp-sales__notice-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 2;
}

.lp-sales__notice-list {
  list-style: none;
}

.lp-sales__notice-list > li {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 2;
  padding-left: 1.5em;
  position: relative;
}

.lp-sales__notice-list > li::before {
  content: "○";
  position: absolute;
  left: 0;
}

.lp-sales__notice-sublist {
  list-style: none;
  padding: var(--spacing-xs) 0 0 0;
}

.lp-sales__notice-sublist > li {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 2;
  padding-left: 2.5em;
  position: relative;
}

.lp-sales__notice-sublist > li::before {
  position: absolute;
  left: 0;
}

.lp-sales__notice-sublist > li:nth-child(1)::before {
  content: "（1）";
}

.lp-sales__notice-sublist > li:nth-child(2)::before {
  content: "（2）";
}

.lp-sales__company-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.lp-sales__company-info dt {
  font-size: var(--font-size-sm);
  color: var(--color-sage-dark);
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-sm);
}

.lp-sales__company-info dd {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.8;
}

/* --- LP CTA --- */
.lp-cta {
  padding: var(--spacing-5xl) var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-sage-light) 0%, var(--color-sage) 100%);
  text-align: center;
}

.lp-cta__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-2xl);
}

.lp-cta__text-col {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lp-cta__title {
  font-size: var(--font-size-3xl);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.lp-cta__text {
  font-size: var(--font-size-base);
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
  line-height: 2;
}

.lp-cta__qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

.lp-cta__qr-image {
  width: 180px;
  height: 180px;
  background-color: var(--color-white);
  border-radius: 20px;
  padding: var(--spacing-sm);
  box-shadow: 0 12px 32px -8px rgba(0, 0, 0, 0.2);
}

.lp-cta__qr-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.lp-cta__qr-label {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.75);
  letter-spacing: 0.1em;
}

.lp-cta__line-btn {
  display: inline-block;
  margin-top: var(--spacing-md);
}

.lp-cta__line-btn img {
  height: 52px;
  width: auto;
}

/* Mobile: LP adjustments */
@media (max-width: 767px) {
  .lp-sales__company-info {
    grid-template-columns: 1fr;
  }

  .lp-sales__feature {
    padding: var(--spacing-lg) var(--spacing-sm);
  }

  .lp-sales__feature-label {
    font-size: var(--font-size-xs);
  }

  .lp-sales__feature-text {
    font-size: var(--font-size-base);
  }

  .lp-cta {
    padding: var(--spacing-4xl) var(--spacing-md);
  }

  .lp-cta__title {
    font-size: var(--font-size-2xl);
  }

  .lp-cta__qr-image {
    width: 140px;
    height: 140px;
    opacity: 0.7;
  }

  .lp-cta__line-btn img {
    height: 56px;
  }
}

/* --- LP Responsive: Tablet (768px+) --- */
@media (min-width: 768px) {
  .lp-hero {
    padding-left: var(--spacing-xl);
    padding-right: var(--spacing-xl);
  }

  .lp-hero__content {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    gap: var(--spacing-2xl);
    width: 100%;
  }

  .lp-hero__text {
    flex: 0 1 40%;
    align-items: flex-start;
  }

  .lp-hero__headline {
    font-size: var(--font-size-5xl);
  }

  .lp-hero__illustration {
    flex: 0 1 58%;
    width: auto;
    max-width: none;
    align-self: stretch;
    display: flex;
    align-items: center;
  }

  .lp-hero__location {
    align-items: flex-start;
    margin-top: var(--spacing-xl);
  }

  .lp-hero__location-name {
    font-size: var(--font-size-3xl);
  }

  .lp-hero__location-desc {
    font-size: var(--font-size-base);
  }

  .lp-sales {
    padding: var(--spacing-5xl) var(--spacing-2xl);
  }

  .lp-sales__intro {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-3xl);
  }

  .lp-sales__product-img {
    width: 340px;
  }

  .lp-sales__copy {
    text-align: left;
  }

  .lp-sales__title {
    font-size: var(--font-size-3xl);
  }

  .lp-sales__text {
    font-size: var(--font-size-lg);
    margin: 0;
  }

  .lp-sales__features {
    gap: var(--spacing-xl);
  }

  .lp-sales__feature {
    padding: var(--spacing-2xl) var(--spacing-lg);
  }

  .lp-sales__feature-label {
    font-size: var(--font-size-base);
  }

  .lp-sales__feature-text {
    font-size: var(--font-size-xl);
  }

  .lp-cta {
    padding: var(--spacing-5xl) var(--spacing-2xl);
    text-align: left;
  }

  .lp-cta__content {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-3xl);
  }

  .lp-cta__text-col {
    flex: 1 1 55%;
    align-items: flex-start;
  }

  .lp-cta__title {
    font-size: var(--font-size-4xl);
  }

  .lp-cta__text {
    font-size: var(--font-size-lg);
  }

  .lp-cta__qr {
    flex: 0 0 auto;
  }

  .lp-cta__line-btn {
    opacity: 0.8;
  }

  .lp-cta__line-btn:hover {
    opacity: 1;
  }
}

/* --- LP Responsive: Desktop (1024px+) --- */
@media (min-width: 1024px) {
  .lp-hero {
    padding-left: var(--spacing-2xl);
    padding-right: var(--spacing-2xl);
  }

  .lp-hero__content {
    gap: var(--spacing-2xl);
  }

  .lp-hero__headline {
    font-size: 4rem;
    letter-spacing: 0.15em;
  }

  .lp-hero__illustration {
    flex: 0 1 60%;
    max-width: none;
  }

  .lp-hero__location-name {
    font-size: var(--font-size-4xl);
  }

  .lp-hero__location-desc {
    font-size: var(--font-size-lg);
  }

  .lp-sales__product-img {
    width: 400px;
  }

  .lp-sales__title {
    font-size: var(--font-size-4xl);
  }

  .lp-sales__feature-text {
    font-size: var(--font-size-2xl);
  }

  .lp-cta__title {
    font-size: var(--font-size-5xl);
  }

  .lp-cta__qr-image {
    width: 200px;
    height: 200px;
  }
}

/* ============================================
   LP Tips Section ( nne-howto.html )
   ============================================ */

.lp-tips {
  background-color: var(--color-beige);
  padding: var(--spacing-4xl) var(--spacing-md);
}

.lp-tips__header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.lp-tips__title {
  font-family: "Shippori Mincho", serif;
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 400;
  color: var(--color-text-main);
  letter-spacing: 0.08em;
}

.lp-tips__list {
  list-style: none;
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.lp-tips__item {
  background-color: var(--color-white);
  border-radius: 12px;
  padding: var(--spacing-lg) var(--spacing-xl);
  border-left: 4px solid var(--color-sage);
}

.lp-tips__item-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.lp-tips__num {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-sage);
  color: var(--color-text-white);
  font-family: "Shippori Mincho", serif;
  font-size: var(--font-size-base);
  letter-spacing: 0;
}

.lp-tips__step {
  font-family: "Shippori Mincho", serif;
  font-size: var(--font-size-lg);
  font-weight: 500;
  color: var(--color-text-main);
}

.lp-tips__desc {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: 1.8;
  padding-left: calc(44px + var(--spacing-md));
}

.lp-tips__note {
  max-width: 760px;
  margin: var(--spacing-2xl) auto 0;
  padding: var(--spacing-lg) var(--spacing-xl);
  background-color: var(--color-sage-light);
  border-radius: 8px;
  font-size: var(--font-size-sm);
  color: var(--color-sage-dark);
  line-height: 1.8;
}

@media (min-width: 768px) {
  .lp-tips {
    padding: var(--spacing-5xl) var(--spacing-2xl);
  }

  .lp-tips__item {
    padding: var(--spacing-xl) var(--spacing-2xl);
  }

  .lp-tips__num {
    width: 52px;
    height: 52px;
    font-size: var(--font-size-lg);
  }

  .lp-tips__step {
    font-size: var(--font-size-xl);
  }

  .lp-tips__desc {
    font-size: var(--font-size-base);
    padding-left: calc(52px + var(--spacing-md));
  }

  .lp-tips__note {
    font-size: var(--font-size-base);
  }
}

/* ============================================
   Amazon Coupon Page ( amazon-coupon.html )
   ============================================ */

/* Hero */
.coupon-hero {
  position: relative;
  overflow: hidden;
  background-color: var(--color-cream);
  padding: var(--spacing-5xl) var(--spacing-md) var(--spacing-4xl);
  text-align: center;
}

.coupon-hero__silk {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.coupon-hero__silk-layer {
  position: absolute;
  border-radius: 50%;
  opacity: 0.18;
}

.coupon-hero__silk-layer--1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-sage-light), transparent 70%);
  top: -200px;
  left: -150px;
}

.coupon-hero__silk-layer--2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--color-rose-light), transparent 70%);
  bottom: -150px;
  right: -100px;
}

.coupon-hero__content {
  position: relative;
  max-width: 640px;
  margin: 0 auto;
}

.coupon-hero__label {
  display: inline-block;
  font-family: var(--font-mincho);
  font-size: var(--font-size-sm);
  letter-spacing: 0.12em;
  color: var(--color-sage-dark);
  border: 1px solid var(--color-sage-light);
  border-radius: 2em;
  padding: var(--spacing-xs) var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.coupon-hero__headline {
  font-family: var(--font-mincho);
  font-size: clamp(2rem, 7vw, 3.5rem);
  font-weight: 400;
  line-height: 1.4;
  color: var(--color-text-main);
  margin-bottom: var(--spacing-lg);
}

.coupon-hero__sub {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Coupon Code Block */
.coupon-code-block {
  background-color: var(--color-beige);
  padding: var(--spacing-2xl) var(--spacing-md);
}

.coupon-code-block__inner {
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
}

.coupon-code-block__label {
  font-size: var(--font-size-sm);
  letter-spacing: 0.1em;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
}

.coupon-code-block__code-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.coupon-code-block__code {
  display: inline-block;
  font-family: monospace;
  font-size: clamp(1.5rem, 6vw, 2.2rem);
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-text-main);
  background-color: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: 6px;
  padding: var(--spacing-sm) var(--spacing-lg);
  user-select: all;
}

.coupon-code-block__copy-btn {
  flex-shrink: 0;
  background-color: var(--color-sage);
  color: var(--color-text-white);
  border: none;
  border-radius: 6px;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: background-color 0.2s;
}

.coupon-code-block__copy-btn:hover {
  background-color: var(--color-sage-dark);
}

.coupon-code-block__copy-btn.is-copied {
  background-color: var(--color-sage-dark);
}

.coupon-code-block__note {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xl);
}

.coupon-code-block__amazon-btn {
  display: inline-block;
  background-color: #ff9900;
  color: #111;
  font-size: var(--font-size-base);
  font-weight: 700;
  text-decoration: none;
  border-radius: 6px;
  padding: var(--spacing-md) var(--spacing-2xl);
  transition: background-color 0.2s;
}

.coupon-code-block__amazon-btn:hover {
  background-color: #e68a00;
}

/* Steps */
.coupon-steps {
  background-color: var(--color-white);
  padding: var(--spacing-4xl) var(--spacing-md);
}

.coupon-steps__title {
  font-family: var(--font-mincho);
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 400;
  text-align: center;
  color: var(--color-text-main);
  margin-bottom: var(--spacing-3xl);
}

.coupon-step {
  max-width: 760px;
  margin: 0 auto var(--spacing-3xl);
  padding-bottom: var(--spacing-3xl);
  border-bottom: 1px solid var(--color-border);
}

.coupon-step:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.coupon-step__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.coupon-step__number {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--color-sage);
  color: var(--color-text-white);
  font-family: var(--font-mincho);
  font-size: var(--font-size-xl);
  font-weight: 500;
}

.coupon-step__title {
  font-family: var(--font-mincho);
  font-size: clamp(1.1rem, 3vw, 1.4rem);
  font-weight: 500;
  color: var(--color-text-main);
  line-height: 1.4;
}

.coupon-step__desc {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
  padding-left: calc(48px + var(--spacing-md));
}

.coupon-step__img-wrap {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background-color: var(--color-beige);
}

.coupon-step__img-wrap img {
  display: block;
  width: 100%;
  height: auto;
}

@media (min-width: 768px) {
  .coupon-hero {
    padding: var(--spacing-5xl) var(--spacing-xl);
  }

  .coupon-steps {
    padding: var(--spacing-4xl) var(--spacing-xl);
  }

  .coupon-step__number {
    width: 56px;
    height: 56px;
    font-size: var(--font-size-2xl);
  }

  .coupon-step__desc {
    padding-left: calc(56px + var(--spacing-md));
  }
}