@charset "UTF-8";

/* =========================================
   Variables & Reset (Premium Fragrance Style)
   ========================================= */
:root {
  /* Colors - Sophisticated Dark Mode */
  --color-bg: #0a0a0a;
  --color-bg-light: #141414;
  --color-bg-lighter: #1e1e1e;
  --color-text: #e6e6e6;
  --color-text-muted: #a3a3a3;

  /* Refined gradient colors */
  --color-aimon-1: #69E8F1;
  --color-aimon-2: #2C9CD8;
  --color-relaxon-1: #D82C57;
  --color-relaxon-2: #FFD7F1;

  --color-aimon-primary: #4ab9d8;
  --color-relaxon-primary: #d82c57;

  --gradient-aimon: linear-gradient(135deg, var(--color-aimon-1), var(--color-aimon-2));
  --gradient-relaxon: linear-gradient(135deg, var(--color-relaxon-1), var(--color-relaxon-2));

  --color-error: #e07a5f;
  --color-error-bg: rgba(224, 122, 95, 0.05);

  /* Typography */
  --font-family-base: 'Inter', 'Noto Sans JP', sans-serif;

  /* Layout */
  --container-width: 1000px;
  --header-height: 80px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  font-weight: 300;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  letter-spacing: 0.08em;
  /* 広い文字間で高級感 */
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.4s ease, color 0.4s ease;
}

a:hover {
  opacity: 0.6;
}

ul {
  list-style: none;
}

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

/* =========================================
   Typography & Utilities
   ========================================= */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 5%;
}

.section {
  padding: 150px 0;
  /* ゆとりのある余白 */
}

.section-title {
  font-size: 1.8rem;
  font-weight: 400;
  /* 細めのウェイト */
  text-align: center;
  margin-bottom: 4rem;
  line-height: 1.6;
  letter-spacing: 0.15em;
  color: #fff;
}

.desktop-only {
  display: block;
}

.mobile-only {
  display: none;
}

@media (max-width: 768px) {
  .section {
    padding: 100px 0;
  }

  .section-title {
    font-size: 1.4rem;
    margin-bottom: 3rem;
  }

  .desktop-only {
    display: none;
  }

  .mobile-only {
    display: block;
  }
}

/* Animations */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s cubic-bezier(0.2, 0.8, 0.2, 1), transform 1s cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

.delay-1 {
  transition-delay: 0.2s;
}

.delay-2 {
  transition-delay: 0.4s;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 40px;
  font-weight: 400;
  letter-spacing: 0.1em;
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: all 0.4s ease;
  background: transparent;
  color: #fff;
  border-radius: 2px;
}

.btn:hover {
  background: #fff;
  color: #000;
}

.btn--primary {
  background: rgba(255, 255, 255, 0.05);
}

.btn--secondary {
  border-color: rgba(255, 255, 255, 0.1);
  color: var(--color-text-muted);
}

.btn--secondary:hover {
  background: transparent;
  border-color: #fff;
  color: #fff;
}

/* =========================================
   Header
   ========================================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  padding: 0 40px;
}

.header__logo img {
  height: 35px;
  width: auto;
  filter: brightness(0) invert(1);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 40px;
}

.header__nav-list {
  display: flex;
  gap: 30px;
}

.header__nav-list a {
  font-size: 0.8rem;
  font-weight: 300;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
}

.header__nav-list a:hover {
  color: #fff;
}

.header__btn {
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  padding: 10px 24px;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  border-radius: 2px;
  transition: .3s;
}

.header__btn:hover {
  background: #fff;
  color: #000;
  opacity: 1;
}

.header__hamburger {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 20px;
  position: relative;
  z-index: 1001;
}

.header__hamburger span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: #fff;
  transition: all 0.4s ease;
}

.header__hamburger span:nth-child(1) {
  top: 0;
}

.header__hamburger span:nth-child(2) {
  top: 9px;
}

.header__hamburger span:nth-child(3) {
  bottom: 0;
}

.header__hamburger.is-active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.header__hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.header__hamburger.is-active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

@media (max-width: 768px) {
  .header__inner {
    padding: 0 20px;
  }

  .header__nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: var(--color-bg);
    flex-direction: column;
    justify-content: center;
    transition: right 0.5s cubic-bezier(0.77, 0, 0.175, 1);
  }

  .header__nav.is-active {
    right: 0;
  }

  .header__nav-list {
    flex-direction: column;
    text-align: center;
    gap: 40px;
    margin-bottom: 60px;
  }

  .header__nav-list a {
    font-size: 1.1rem;
  }

  .header__hamburger {
    display: block;
  }
}

/* =========================================
   Section 0: FV
   ========================================= */
.fv {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  z-index: 1;
}

/* FVの背後を埋めるための背景 */
body {
  background-color: var(--color-bg);
}

/* FV用のスペースを作るがクリックは下に通す */
.fv-spacer {
  height: 100vh;
  background: transparent;
  pointer-events: none;
}

main {
  position: relative;
  z-index: 10;
  pointer-events: none;
  /* 背後のFVをクリック可能にする */
}

/* 各セクションには背景色を設定して、スクロール時にFVを隠すようにする */
.section {
  position: relative;
  background: var(--color-bg);
  z-index: 11;
  pointer-events: auto;
  /* セクション内はクリック可能に戻す */
}

.fv__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
}

.fv__bg-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
  transform: scale(1.05);
  /* Slight scale for elegance */
}

.fv__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(10, 10, 10, 0.1) 0%, var(--color-bg) 100%);
}

.fv__content {
  position: relative;
  z-index: 1;
  padding: 0 20px;
}

.fv__sub {
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  margin-bottom: 30px;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.fv__title {
  font-size: 2.8rem;
  font-weight: 300;
  line-height: 1.4;
  margin-bottom: 60px;
  letter-spacing: 0.1em;
}

.fv__buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
}

@media (max-width: 768px) {
  .fv__title {
    font-size: 1.8rem;
  }

  .fv__sub {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
  }

  .fv__buttons {
    flex-direction: column;
    gap: 15px;
  }
}

/* =========================================
   Section 1: Concept
   ========================================= */
.concept {
  text-align: center;
}

.concept__text p {
  font-size: 1rem;
  margin-bottom: 2rem;
  color: var(--color-text-muted);
}

.concept__highlight {
  margin-top: 60px;
  padding: 60px 40px;
  background: var(--color-bg-light);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.concept__label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  font-weight: 400;
}

.concept__highlight p {
  font-weight: 400;
  font-size: 1.1rem !important;
  color: #fff !important;
  margin-bottom: 0 !important;
}

/* =========================================
   Section 2: Routine
   ========================================= */
.routine__flow {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 40px;
  margin-bottom: 60px;
}

.routine__step {
  flex: 1;
  padding: 50px 30px;
  text-align: center;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.05);
  background: var(--color-bg-light);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.routine__step-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  font-weight: 400;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  background: var(--color-bg);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.routine__step-img {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 50%;
  margin-bottom: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 5px;
}

.routine__step-icon {
  font-size: 1.5rem;
  margin-bottom: 20px;
  color: var(--color-text-muted);
}

.routine__step-title {
  font-size: 1rem;
  font-weight: 400;
  margin-bottom: 10px;
  color: var(--color-text-muted);
}

.routine__step-product {
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: 20px;
  letter-spacing: 0.1em;
}

.routine__step-product ruby {
  ruby-align: center;
}

.routine__step-product rt {
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  margin-bottom: 0.5em;
  color: var(--color-text-muted);
  font-weight: 300;
}

.routine__step:first-child .routine__step-product {
  background: var(--gradient-aimon);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.routine__step:last-child .routine__step-product {
  background: var(--gradient-relaxon);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.routine__step-desc {
  font-size: 0.9rem;
  line-height: 1.6;
}

.routine__arrow {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.2);
}

.routine__note {
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 30px;
}

@media (max-width: 768px) {
  .routine__flow {
    flex-direction: column;
    gap: 30px;
  }

  .routine__arrow {
    justify-content: center;
    transform: rotate(90deg);
  }
}

/* =========================================
   Section 3 & 4: Products
   ========================================= */
.products {
  background: var(--color-bg-light);
}

.product-card {
  display: flex;
  align-items: center;
  gap: 80px;
  margin-bottom: 150px;
}

.product-card:last-child {
  margin-bottom: 0;
}

.product-card__image {
  flex: 1;
  display: flex;
  justify-content: center;
}

.product-card__image--reverse {
  order: 2;
}

.product-card__image img {
  max-width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.product-card__content {
  flex: 1;
}

.product-card__title {
  font-size: 2.5rem;
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 10px;
  letter-spacing: 0.1em;
}

.aimon .product-card__title {
  background: var(--gradient-aimon);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.relaxon .product-card__title {
  background: var(--gradient-relaxon);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.product-card__subtitle {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-muted);
  margin-bottom: 30px;
  letter-spacing: 0.1em;
}

.product-card__concept {
  display: inline-block;
  padding: 6px 0;
  font-size: 0.9rem;
  margin-bottom: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.product-card__desc {
  margin-bottom: 40px;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* Fragrance Pyramid (CSS visually structured like a pyramid) */
.fragrance-pyramid {
  margin-bottom: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
}

.fragrance-pyramid__layer {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 20px;
  text-align: center;
  width: 100%;
}

.fragrance-pyramid__layer--top {
  background: rgba(255, 255, 255, 0.03);
}

.fragrance-pyramid__layer--middle {
  background: rgba(255, 255, 255, 0.07);
}

.fragrance-pyramid__layer--last {
  background: rgba(255, 255, 255, 0.12);
}

.layer-label {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 4px;
}

.layer-desc {
  font-size: 0.85rem;
}

/* Alternate elegant pyramid design (if clip-path is too restrictive for text) */
.elegant-pyramid {
  margin-bottom: 40px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.elegant-pyramid::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50px;
  width: 1px;
  background: rgba(255, 255, 255, 0.1);
}

.ep-layer {
  position: relative;
  padding-left: 90px;
}

.ep-layer::before {
  content: '';
  position: absolute;
  left: 47px;
  top: 12px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #fff;
}

.aimon .ep-layer::before {
  background: var(--color-aimon-primary);
}

.relaxon .ep-layer::before {
  background: var(--color-relaxon-primary);
}

.ep-label {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.ep-desc {
  font-size: 0.95rem;
}

.product-card__info {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 30px;
}

.product-card__info li {
  margin-bottom: 15px;
  font-size: 0.9rem;
  display: flex;
  align-items: flex-start;
  gap: 15px;
  color: var(--color-text-muted);
}

.product-card__info-text {
  display: flex;
  flex: 1;
}

.info-label {
  flex-shrink: 0;
  white-space: nowrap;
  font-weight: 400;
  color: var(--color-text);
  position: relative;
}

.info-label::after {
  content: "：";
}

.info-value {
  flex: 1;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .product-card {
    flex-direction: column;
    gap: 40px;
    margin-bottom: 100px;
  }

  .product-card__image--reverse {
    order: 0;
  }
}

/* =========================================
   Section 5: Science
   ========================================= */
.science__box {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 80px 50px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.science__box-title {
  font-size: 1.2rem;
  font-weight: 400;
  margin-bottom: 30px;
  letter-spacing: 0.1em;
}

.science__box-divider {
  width: 30px;
  height: 1px;
  background: rgba(255, 255, 255, 0.3);
  margin: 40px auto;
}

.science__box small {
  display: block;
  margin-top: 30px;
  color: rgba(255, 255, 255, 0.3);
  font-size: 0.75rem;
}

/* =========================================
   Section 6: Use Case
   ========================================= */
.usecase__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.usecase__card {
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 50px 30px;
  text-align: center;
  transition: background 0.4s ease;
}

.usecase__card:hover {
  background: rgba(255, 255, 255, 0.02);
}

.usecase__icon {
  font-size: 1.5rem;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.5);
}

.usecase__title {
  font-size: 1.1rem;
  font-weight: 400;
  margin-bottom: 20px;
}

.usecase__desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

@media (max-width: 768px) {
  .usecase__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* =========================================
   Section 7: FAQ
   ========================================= */
.faq__list {
  max-width: 800px;
  margin: 0 auto;
}

.faq__item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.faq__q {
  padding: 30px 0;
  font-weight: 400;
  cursor: pointer;
  position: relative;
  list-style: none;
  font-size: 1rem;
}

.faq__q::-webkit-details-marker {
  display: none;
}

.faq__q::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  font-weight: 300;
  transition: transform 0.4s ease;
}

.faq__item[open] .faq__q::after {
  transform: translateY(-50%) rotate(45deg);
}

.faq__a {
  padding: 0 0 30px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* =========================================
   Section 8: Caution
   ========================================= */
.caution {
  padding: 0 0 150px;
}

.caution__box {
  background: var(--color-error-bg);
  border: 1px solid rgba(224, 122, 95, 0.2);
  padding: 50px;
}

.caution__title {
  color: var(--color-error);
  font-size: 1.1rem;
  font-weight: 400;
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  gap: 15px;
}

.caution__list li {
  margin-bottom: 12px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.8);
}

/* =========================================
   Section 9: CTA
   ========================================= */
.cta-section {
  background: var(--color-bg-light);
}

.cta-section__box {
  display: flex;
  align-items: center;
  gap: 60px;
  padding: 80px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.cta-section__image {
  flex: 1;
  text-align: center;
}

.cta-section__image img {
  max-width: 100%;
}

.cta-section__info {
  flex: 1.2;
}

.cta-section__title {
  font-size: 1.6rem;
  font-weight: 300;
  line-height: 1.4;
  margin-bottom: 20px;
  letter-spacing: 0.1em;
}

.cta-section__title span {
  font-size: 1rem;
  font-weight: 300;
}

.cta-section__price {
  font-size: 2rem;
  font-weight: 400;
  margin-bottom: 15px;
}

.cta-section__price span {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.cta-section__trial {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 50px;
}

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

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

@media (max-width: 768px) {
  .cta-section__box {
    flex-direction: column;
    padding: 40px 20px;
    text-align: center;
  }
}

/* =========================================
   Section 10: Footer
   ========================================= */
.footer {
  position: relative;
  z-index: 12;
  background: var(--color-bg);
  padding: 80px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  pointer-events: auto;
  /* フッターもクリック可能に */
}

.footer__top {
  display: flex;
  justify-content: space-between;
  gap: 60px;
  margin-bottom: 80px;
}

.footer__brand {
  flex: 1;
}

.footer__logo {
  height: 40px;
  margin-bottom: 20px;
  filter: brightness(0) invert(1);

  @media screen and (max-width: 768px) {
    margin: 0 auto 20px;
  }
}

.footer__tagline {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

.footer__links {
  flex: 1;
  text-align: right;
}

.footer__links li {
  margin-bottom: 15px;
}

.footer__links a {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

.footer__links a:hover {
  color: #fff;
}

.footer__bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.copyright {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.3);
}

@media (max-width: 768px) {
  .footer__top {
    flex-direction: column;
    text-align: center;
    gap: 40px;
  }

  .footer__links {
    text-align: center;
  }
}