/* ============================================
   Amaysea — Brand Site
   Base Styles
   ============================================ */
 
 :root {
   /* Colors */
   --color-bg: #faf8f5;
   --color-text: #2c2c2c;
   --color-text-muted: #7a7a7a;
   --color-primary: #a0605a;
   --color-primary-dark: #8a4e48;
   --color-accent: #c49a8a;
   --color-light: #f0e8e3;
   --color-white: #ffffff;
   --color-border: #e5ddd7;
   --color-card-bg: #ffffff;
 
   /* Typography */
   --font-jp: 'Noto Sans JP', -apple-system, 'Hiragino Sans', 'Yu Gothic', sans-serif;
   --font-display: 'Playfair Display', serif;
 
   /* Spacing */
   --space-xs: 0.5rem;
   --space-sm: 1rem;
   --space-md: 2rem;
   --space-lg: 4rem;
   --space-xl: 6rem;
 
   /* Layout */
   --container-max: 1200px;
   --border-radius: 12px;
   --border-radius-sm: 8px;
   --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
 
   /* Shadows */
   --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
   --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
 }
 
 /* Reset */
 *, *::before, *::after {
   margin: 0;
   padding: 0;
   box-sizing: border-box;
 }
 
 html {
   scroll-behavior: smooth;
   -webkit-font-smoothing: antialiased;
 }
 
 body {
   font-family: var(--font-jp);
   background: var(--color-bg);
   color: var(--color-text);
   line-height: 1.7;
   font-size: 15px;
   font-weight: 400;
 }
 
 img { max-width: 100%; height: auto; display: block; }
 a { text-decoration: none; color: inherit; transition: var(--transition); }
 ul { list-style: none; }
 
 .container {
   max-width: var(--container-max);
   margin: 0 auto;
   padding: 0 var(--space-md);
 }
 
 /* ========== Typography ========== */
 .section {
   padding: var(--space-xl) 0;
 }
 
 .section__header {
   text-align: center;
   margin-bottom: var(--space-lg);
 }
 
 .section__title {
   font-family: var(--font-display);
   font-size: 2rem;
   font-weight: 400;
   letter-spacing: 0.05em;
   margin-bottom: var(--space-sm);
   color: var(--color-text);
 }
 
 .section__title--left {
   text-align: left;
 }
 
 .section__desc {
   color: var(--color-text-muted);
   font-size: 0.95rem;
   max-width: 500px;
   margin: 0 auto;
 }
 
 /* ========== Buttons ========== */
 .btn {
   display: inline-block;
   padding: 0.85rem 2rem;
   font-family: var(--font-jp);
   font-size: 0.9rem;
   font-weight: 500;
   border-radius: 50px;
   border: 1.5px solid transparent;
   cursor: pointer;
   transition: var(--transition);
   letter-spacing: 0.04em;
 }
 
 .btn--primary {
   background: var(--color-primary);
   color: var(--color-white);
 }
 .btn--primary:hover {
   background: var(--color-primary-dark);
   transform: translateY(-2px);
   box-shadow: var(--shadow-md);
 }
 
 .btn--outline {
   background: transparent;
   border-color: var(--color-primary);
   color: var(--color-primary);
 }
 .btn--outline:hover {
   background: var(--color-primary);
   color: var(--color-white);
   transform: translateY(-2px);
 }
 
 .btn--full {
   width: 100%;
   text-align: center;
 }
 
 /* ========== Header ========== */
 .header {
   position: fixed;
   top: 0;
   left: 0;
   right: 0;
   z-index: 100;
   background: rgba(250, 248, 245, 0.92);
   backdrop-filter: blur(12px);
   -webkit-backdrop-filter: blur(12px);
   border-bottom: 1px solid var(--color-border);
 }
 
 .header__inner {
   display: flex;
   align-items: center;
   justify-content: space-between;
   height: 70px;
 }
 
 .logo {
   display: flex;
   align-items: center;
   gap: 0.4rem;
   font-family: var(--font-display);
   font-size: 1.35rem;
   letter-spacing: 0.08em;
 }
 
 .logo__mark {
   color: var(--color-primary);
   font-size: 1.2rem;
 }
 
 .logo__text {
   color: var(--color-text);
 }
 
 .logo__text--light {
   color: var(--color-white);
 }
 
 .nav {
   display: flex;
   align-items: center;
   gap: var(--space-md);
 }
 
 .nav__link {
   font-size: 0.85rem;
   font-weight: 500;
   color: var(--color-text-muted);
   position: relative;
   padding: 0.25rem 0;
 }
 
 .nav__link::after {
   content: '';
   position: absolute;
   bottom: -2px;
   left: 0;
   width: 0;
   height: 2px;
   background: var(--color-primary);
   transition: var(--transition);
 }
 
 .nav__link:hover {
   color: var(--color-primary);
 }
 .nav__link:hover::after {
   width: 100%;
 }
 
 .nav__link--cta {
   background: var(--color-primary);
   color: var(--color-white) !important;
   padding: 0.5rem 1.4rem;
   border-radius: 50px;
   font-size: 0.82rem;
 }
 .nav__link--cta::after { display: none; }
 .nav__link--cta:hover {
   background: var(--color-primary-dark);
   transform: translateY(-1px);
 }
 
 .hamburger {
   display: none;
   flex-direction: column;
   gap: 5px;
   background: none;
   border: none;
   cursor: pointer;
   padding: 4px;
 }
 .hamburger span {
   display: block;
   width: 24px;
   height: 2px;
   background: var(--color-text);
   border-radius: 2px;
   transition: var(--transition);
 }
 
 /* ========== Hero ========== */
 .hero {
   padding: calc(70px + var(--space-xl)) 0 var(--space-xl);
   min-height: 100vh;
   display: flex;
   align-items: center;
 }
 
 .hero__inner {
   display: grid;
   grid-template-columns: 1fr 1fr;
   gap: var(--space-xl);
   align-items: center;
 }
 
 .hero__subtitle {
   font-size: 0.8rem;
   font-weight: 500;
   letter-spacing: 0.15em;
   color: var(--color-accent);
   text-transform: uppercase;
   margin-bottom: var(--space-sm);
 }
 
 .hero__title {
   font-family: var(--font-display);
   font-size: 3.2rem;
   font-weight: 400;
   line-height: 1.25;
   letter-spacing: 0.03em;
   margin-bottom: var(--space-md);
 }
 
 .hero__title--accent {
   font-style: italic;
   color: var(--color-primary);
 }
 
 .hero__desc {
   color: var(--color-text-muted);
   font-size: 0.95rem;
   line-height: 1.9;
   margin-bottom: var(--space-md);
   max-width: 460px;
 }
 
 .hero__actions {
   display: flex;
   gap: var(--space-sm);
   flex-wrap: wrap;
 }
 
 .hero__visual {
   display: flex;
   justify-content: center;
   align-items: center;
 }
 
 .hero__image-placeholder {
   width: 100%;
   max-width: 380px;
   aspect-ratio: 3/4;
   background: linear-gradient(145deg, var(--color-light), var(--color-border));
   border-radius: var(--border-radius);
   display: flex;
   flex-direction: column;
   align-items: center;
   justify-content: center;
   gap: var(--space-sm);
   position: relative;
   overflow: hidden;
 }
 
 .hero__image-placeholder::before {
   content: '';
   position: absolute;
   top: -50%;
   right: -50%;
   width: 100%;
   height: 100%;
   background: radial-gradient(circle, rgba(160,96,90,0.08) 0%, transparent 70%);
 }
 
 .hero__image-icon {
   font-size: 4rem;
   opacity: 0.6;
 }
 
 .hero__image-label {
   font-size: 0.75rem;
   letter-spacing: 0.12em;
   color: var(--color-text-muted);
 }
 
 /* ========== Features ========== */
 .features {
   padding: var(--space-lg) 0;
   background: var(--color-white);
 }
 
 .features__grid {
   display: grid;
   grid-template-columns: repeat(4, 1fr);
   gap: var(--space-md);
 }
 
 .feature-card {
   text-align: center;
   padding: var(--space-md) var(--space-sm);
 }
 
 .feature-card__number {
   display: block;
   font-family: var(--font-display);
   font-size: 2.4rem;
   font-weight: 600;
   color: var(--color-primary);
   line-height: 1;
 }
 
 .feature-card__unit {
   font-size: 0.8rem;
   color: var(--color-accent);
   margin-left: 2px;
 }
 
 .feature-card__label {
   font-size: 0.82rem;
   color: var(--color-text-muted);
   margin-top: var(--space-xs);
 }
 
 /* ========== Products ========== */
 .products__grid {
   display: grid;
   grid-template-columns: repeat(4, 1fr);
   gap: var(--space-md);
 }
 
 .product-card {
   background: var(--color-card-bg);
   border-radius: var(--border-radius);
   overflow: hidden;
   box-shadow: var(--shadow-sm);
   transition: var(--transition);
   border: 1px solid var(--color-border);
 }
 
 .product-card:hover {
   transform: translateY(-6px);
   box-shadow: var(--shadow-md);
 }
 
 .product-card__image {
   aspect-ratio: 1/1;
   background: linear-gradient(135deg, var(--color-light), #f5ece6);
   display: flex;
   align-items: center;
   justify-content: center;
 }
 
 .product-card__emoji {
   font-size: 3rem;
   opacity: 0.5;
 }
 
 .product-card__body {
   padding: var(--space-sm);
 }
 
 .product-card__tag {
   display: inline-block;
   font-size: 0.7rem;
   font-weight: 500;
   letter-spacing: 0.05em;
   color: var(--color-primary);
   background: rgba(160,96,90,0.08);
   padding: 0.2rem 0.6rem;
   border-radius: 20px;
   margin-bottom: var(--space-xs);
 }
 
 .product-card__title {
   font-size: 0.95rem;
   font-weight: 500;
   margin-bottom: 0.3rem;
 }
 
 .product-card__desc {
   font-size: 0.8rem;
   color: var(--color-text-muted);
   line-height: 1.6;
 }
 
 /* ========== Services ========== */
 .services {
   background: var(--color-white);
 }
 
 .services__grid {
   display: grid;
   grid-template-columns: repeat(4, 1fr);
   gap: var(--space-md);
 }
 
 .service-card {
   padding: var(--space-md);
   border-radius: var(--border-radius);
   border: 1px solid var(--color-border);
   transition: var(--transition);
 }
 
 .service-card:hover {
   border-color: var(--color-primary);
   box-shadow: var(--shadow-sm);
 }
 
 .service-card__icon {
   font-size: 2rem;
   margin-bottom: var(--space-sm);
   display: block;
 }
 
 .service-card__title {
   font-size: 1.05rem;
   font-weight: 500;
   margin-bottom: var(--space-xs);
 }
 
 .service-card__desc {
   font-size: 0.85rem;
   color: var(--color-text-muted);
   line-height: 1.7;
 }
 
 /* ========== About ========== */
 .about__inner {
   display: grid;
   grid-template-columns: 1fr 1fr;
   gap: var(--space-xl);
   align-items: center;
 }
 
 .about__image-placeholder {
   width: 100%;
   aspect-ratio: 4/3;
   background: linear-gradient(145deg, var(--color-light), var(--color-border));
   border-radius: var(--border-radius);
   display: flex;
   flex-direction: column;
   align-items: center;
   justify-content: center;
   gap: var(--space-sm);
 }
 
 .about__image-icon {
   font-size: 3.5rem;
   opacity: 0.5;
 }
 
 .about__image-label {
   font-size: 0.75rem;
   letter-spacing: 0.1em;
   color: var(--color-text-muted);
 }
 
 .about__content .section__title {
   margin-bottom: var(--space-md);
 }
 
 .about__text {
   font-size: 0.92rem;
   color: var(--color-text-muted);
   line-height: 1.9;
   margin-bottom: var(--space-sm);
 }
 
 .about__content .btn {
   margin-top: var(--space-sm);
 }
 
 /* ========== Blog ========== */
 .blog {
   background: var(--color-white);
 }
 
 .blog__grid {
   display: grid;
   grid-template-columns: repeat(3, 1fr);
   gap: var(--space-md);
 }
 
 .blog-card {
   background: var(--color-card-bg);
   border-radius: var(--border-radius);
   border: 1px solid var(--color-border);
   overflow: hidden;
   transition: var(--transition);
 }
 
 .blog-card:hover {
   transform: translateY(-4px);
   box-shadow: var(--shadow-md);
 }
 
 .blog-card__image {
   aspect-ratio: 16/9;
   background: linear-gradient(135deg, var(--color-light), #f5ece6);
   display: flex;
   align-items: center;
   justify-content: center;
 }
 
 .blog-card__emoji {
   font-size: 2.5rem;
   opacity: 0.4;
 }
 
 .blog-card__body {
   padding: var(--space-sm) var(--space-md) var(--space-md);
 }
 
 .blog-card__date {
   font-size: 0.75rem;
   color: var(--color-accent);
   letter-spacing: 0.05em;
 }
 
 .blog-card__title {
   font-size: 0.95rem;
   font-weight: 500;
   margin: var(--space-xs) 0;
   line-height: 1.5;
 }
 
 .blog-card__excerpt {
   font-size: 0.82rem;
   color: var(--color-text-muted);
   line-height: 1.7;
   margin-bottom: var(--space-sm);
 }
 
 .blog-card__link {
   font-size: 0.82rem;
   color: var(--color-primary);
   font-weight: 500;
 }
 .blog-card__link:hover {
   color: var(--color-primary-dark);
 }
 
 /* ========== Contact ========== */
 .contact__grid {
   display: grid;
   grid-template-columns: 1fr 1.2fr;
   gap: var(--space-xl);
   align-items: start;
 }
 
 .contact__info {
   display: flex;
   flex-direction: column;
   gap: var(--space-md);
 }
 
 .contact__item {
   display: flex;
   gap: var(--space-sm);
   align-items: flex-start;
 }
 
 .contact__icon {
   font-size: 1.4rem;
   flex-shrink: 0;
 }
 
 .contact__item h4 {
   font-size: 0.85rem;
   font-weight: 500;
   margin-bottom: 2px;
 }
 
 .contact__item p,
 .contact__item a {
   font-size: 0.9rem;
   color: var(--color-text-muted);
 }
 
 .contact__item a:hover {
   color: var(--color-primary);
 }
 
 .contact__social {
   display: flex;
   gap: var(--space-sm);
   margin-top: var(--space-sm);
 }
 
 .contact__social-link {
   width: 40px;
   height: 40px;
   border: 1px solid var(--color-border);
   border-radius: 50%;
   display: flex;
   align-items: center;
   justify-content: center;
   font-size: 0.75rem;
   font-weight: 600;
   color: var(--color-text-muted);
   transition: var(--transition);
 }
 
 .contact__social-link:hover {
   border-color: var(--color-primary);
   color: var(--color-primary);
   background: rgba(160,96,90,0.05);
 }
 
 .contact__form {
   display: flex;
   flex-direction: column;
   gap: var(--space-sm);
 }
 
 .form__input {
   font-family: var(--font-jp);
   padding: 0.85rem 1rem;
   border: 1.5px solid var(--color-border);
   border-radius: var(--border-radius-sm);
   font-size: 0.9rem;
   background: var(--color-white);
   transition: var(--transition);
   outline: none;
   width: 100%;
 }
 
 .form__input:focus {
   border-color: var(--color-primary);
   box-shadow: 0 0 0 3px rgba(160,96,90,0.1);
 }
 
 .form__textarea {
   resize: vertical;
   min-height: 120px;
 }
 
 .form__select {
   appearance: none;
   background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237a7a7a' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
   background-repeat: no-repeat;
   background-position: right 1rem center;
 }
 
 /* ========== Footer ========== */
 .footer {
   background: var(--color-text);
   color: rgba(255,255,255,0.8);
   padding: var(--space-xl) 0 0;
 }
 
 .footer__inner {
   display: grid;
   grid-template-columns: 2fr 1fr 1fr;
   gap: var(--space-xl);
   padding-bottom: var(--space-lg);
 }
 
 .footer__tagline {
   font-family: var(--font-display);
   font-style: italic;
   font-size: 0.95rem;
   color: rgba(255,255,255,0.5);
   margin-top: var(--space-xs);
 }
 
 .footer__links h4,
 .footer__contact h4 {
   font-size: 0.8rem;
   letter-spacing: 0.08em;
   text-transform: uppercase;
   color: rgba(255,255,255,0.4);
   margin-bottom: var(--space-sm);
 }
 
 .footer__links a,
 .footer__contact p {
   display: block;
   font-size: 0.88rem;
   color: rgba(255,255,255,0.7);
   margin-bottom: 0.5rem;
 }
 
 .footer__links a:hover {
   color: var(--color-white);
 }
 
 .footer__bottom {
   border-top: 1px solid rgba(255,255,255,0.1);
   padding: var(--space-md) 0;
   text-align: center;
   font-size: 0.8rem;
   color: rgba(255,255,255,0.3);
 }
 
 /* ========== Language Toggle ========== */
 .lang-toggle {
   position: fixed;
   bottom: 2rem;
   right: 2rem;
   display: flex;
   background: var(--color-white);
   border: 1px solid var(--color-border);
   border-radius: 50px;
   overflow: hidden;
   box-shadow: var(--shadow-md);
   z-index: 99;
 }
 
 .lang-toggle__btn {
   font-family: var(--font-jp);
   padding: 0.4rem 0.8rem;
   font-size: 0.7rem;
   font-weight: 500;
   border: none;
   background: transparent;
   cursor: pointer;
   color: var(--color-text-muted);
   transition: var(--transition);
   letter-spacing: 0.04em;
 }
 
 .lang-toggle__btn--active {
   background: var(--color-primary);
   color: var(--color-white);
 }
 
 .lang-toggle__btn:not(.lang-toggle__btn--active):hover {
   color: var(--color-primary);
 }
 
 /* ========== Responsive ========== */
 @media (max-width: 1024px) {
   .hero__title { font-size: 2.6rem; }
   .products__grid,
   .services__grid { grid-template-columns: repeat(2, 1fr); }
 }
 
 @media (max-width: 768px) {
   .hero__inner,
   .about__inner,
   .contact__grid { grid-template-columns: 1fr; }
 
   .hero { min-height: auto; padding-top: calc(70px + var(--space-lg)); }
   .hero__title { font-size: 2rem; }
   .hero__desc { max-width: 100%; }
   .hero__visual { display: none; }
 
   .features__grid { grid-template-columns: repeat(2, 1fr); }
   .products__grid { grid-template-columns: repeat(2, 1fr); }
   .services__grid { grid-template-columns: 1fr; }
   .blog__grid { grid-template-columns: 1fr; }
   .footer__inner { grid-template-columns: 1fr; gap: var(--space-md); }
 
   .nav {
     position: fixed;
     top: 70px;
     left: 0;
     right: 0;
     background: var(--color-bg);
     flex-direction: column;
     padding: var(--space-md);
     gap: var(--space-sm);
     border-bottom: 1px solid var(--color-border);
     transform: translateY(-120%);
     opacity: 0;
     transition: var(--transition);
   }
 
   .nav--open {
     transform: translateY(0);
     opacity: 1;
   }
 
   .hamburger { display: flex; }
 
   .hamburger--active span:nth-child(1) {
     transform: rotate(45deg) translate(5px, 5px);
   }
   .hamburger--active span:nth-child(2) {
     opacity: 0;
   }
   .hamburger--active span:nth-child(3) {
     transform: rotate(-45deg) translate(5px, -5px);
   }
 }
 
 @media (max-width: 480px) {
   .products__grid { grid-template-columns: 1fr; }
   .features__grid { grid-template-columns: 1fr 1fr; }
   .section__title { font-size: 1.5rem; }
   .hero__title { font-size: 1.8rem; }
 }
 
 /* ========== Animations ========== */
 @keyframes fadeUp {
   from {
     opacity: 0;
     transform: translateY(20px);
   }
   to {
     opacity: 1;
     transform: translateY(0);
   }
 }
 
 .hero__content,
 .hero__visual {
   animation: fadeUp 0.8s ease-out;
 }
 
 .hero__visual {
   animation-delay: 0.2s;
 }