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

    html, body {
      width: 100%; height: 100%;
      font-family: 'Inter', system-ui, -apple-system, sans-serif;
      background: #f8f6f2; color: #1e1c1a;
      font-weight: 300; line-height: 1.5;
      overflow: hidden;
    }

    /* ---- Swiper fullscreen ---- */
    .swiper {
      width: 100%; height: 100vh; height: 100dvh;
    }
    .swiper-slide {
      display: flex; flex-direction: column;
      padding: 2rem 3rem;
      background: #f8f6f2;
      overflow-y: auto;
    }

    /* ---- Fixed Navbar ---- */
    .navbar {
      position: fixed; top: 0; left: 0; right: 0;
      z-index: 100;
      display: flex; justify-content: space-between; align-items: center;
      padding: 0.8rem 3rem;
      background: rgba(248, 246, 242, 0.92);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid #e4dfd8;
    }
    .logo {
      display: flex; align-items: center; gap: 0.6rem;
    }
    .logo-img-wrap {
      background: #F8F6F2; padding: 3px 6px; border-radius: 2px;
      display: flex; align-items: center;
    }
    .logo-img-wrap img {
      height: 26px; width: auto; display: block;
      mix-blend-mode: multiply;
    }
    .logo small {
      font-size: 0.55rem; letter-spacing: 0.12em;
      color: #7a6e63; display: block; font-weight: 200;
      margin-top: -0.05rem; line-height: 1.2;
    }
    .nav-links {
      display: flex; gap: 2rem; font-size: 0.78rem;
      font-weight: 400; letter-spacing: 0.1em; text-transform: uppercase;
    }
    .nav-links a {
      color: #3d3833; text-decoration: none;
      border-bottom: 1px solid transparent;
      transition: border-color 0.3s, color 0.3s;
      padding-bottom: 2px; cursor: pointer;
    }
    .nav-links a:hover { border-bottom-color: #a69686; color: #1a1714; }
    .nav-links a.active { border-bottom-color: #a69686; color: #1a1714; }

    /* ---- Slide content wrapper (pushes below navbar) ---- */
    .slide-content {
      flex: 1; display: flex; flex-direction: column;
      justify-content: center; align-items: center;
      padding-top: 4rem; padding-bottom: 1rem;
      max-width: 1100px; margin: 0 auto; width: 100%;
    }

    /* ---- Slide 1: Hero (subtle wood grain) ---- */
    .hero-slide {
      position: relative; overflow: hidden;
      background:
        repeating-linear-gradient(
          86deg,
          transparent,
          transparent 3px,
          rgba(150, 120, 90, 0.01) 3px,
          rgba(150, 120, 90, 0.01) 5px
        ),
        repeating-linear-gradient(
          94deg,
          transparent,
          transparent 4px,
          rgba(130, 100, 70, 0.006) 4px,
          rgba(130, 100, 70, 0.006) 7px
        ),
        linear-gradient(rgba(248,246,242,0.7), rgba(248,246,242,0.7)),
        url('../images/bj.png') center center / cover no-repeat,
        #f8f6f2;
    }
    .hero-slide .slide-content { position: relative; z-index: 2; }

    /* ---- Slides 2-4: Wabi-sabi paper texture ---- */
    .product-slide {
      background:
        linear-gradient(rgba(248,246,242,0.55), rgba(248,246,242,0.55)),
        url('../images/bj2.png') center center / cover no-repeat,
        #f8f6f2;
    }

    /* ---- Slide 2: Culture (wabi-sabi paper) ---- */
    .culture-slide {
      background:
        linear-gradient(rgba(248,246,242,0.75), rgba(248,246,242,0.75)),
        url('../images/bj3.png') center center / cover no-repeat,
        #f8f6f2;
    }

    /* ---- Slide 6: About (wood grain) ---- */
    .about-slide {
      background:
        linear-gradient(rgba(248,246,242,0.75), rgba(248,246,242,0.75)),
        url('../images/bj3.png') center center / cover no-repeat,
        #f8f6f2;
    }
    .hero-center {
      flex: 1; display: flex; flex-direction: column;
      justify-content: center; align-items: center;
      padding: 2rem 2rem 1rem; max-width: 1100px; margin: 0 auto; width: 100%;
      text-align: center;
    }
    .hero-center .top-tag {
      font-size: clamp(1.3rem, 2.5vw, 2rem); letter-spacing: 0.25em;
      color: #5e544a; margin-bottom: 0.8rem;
      font-weight: 300; border: none; padding: 0;
    }
    .hero-center h1 {
      font-size: clamp(2.6rem, 7vw, 5.5rem); font-weight: 200;
      letter-spacing: 0.04em; line-height: 1.15; color: #1e1c1a;
      margin-bottom: 0.4rem; max-width: 900px;
    }
    .hero-center .sub-line {
      font-size: clamp(1rem, 2.5vw, 1.6rem); font-weight: 400;
      letter-spacing: 0.15em; color: #5e544a; margin-top: 0.2rem;
      border-top: 1px solid #d9d2c8; padding-top: 0.8rem; display: inline-block;
    }
    .hero-intro {
      margin-top: 1rem; overflow-y: auto; width: 100%;
      max-width: 800px; padding-right: 0.5rem;
    }
    .hero-intro p {
      font-size: clamp(0.65rem, 1vw, 0.85rem); font-weight: 300;
      color: #4a443e; line-height: 1.7; margin-bottom: 0.7rem;
      letter-spacing: 0.04em;
    }
    .hero-intro h3 {
      font-size: clamp(0.72rem, 1.15vw, 0.95rem); font-weight: 400;
      color: #2d2925; margin: 0.9rem 0 0.3rem;
      letter-spacing: 0.08em;
    }
    .hero-intro .en-dash {
      color: #b5a89a; font-weight: 200;
    }

    /* ---- Slide footer (common) ---- */
    .slide-footer {
      display: flex; justify-content: space-between; align-items: center;
      padding-top: 1rem; border-top: 1px solid #e4dfd8;
      font-size: 0.65rem; letter-spacing: 0.08em; color: #7a6e63;
      flex-wrap: wrap; gap: 0.6rem; width: 100%; margin-top: auto;
    }
    /* ---- Vertical pagination (right-middle) ---- */
    .swiper-pagination {
      position: absolute; right: 2rem; left: auto;
      top: 50%; transform: translateY(-50%);
      width: auto; bottom: auto;
      display: flex; flex-direction: column; gap: 1rem;
      align-items: center; justify-content: center;
      z-index: 50;
    }
    .swiper-pagination-bullet {
      width: 8px; height: 8px;
      background: #d9d2c8; opacity: 1;
      border-radius: 50%; transition: background 0.3s, transform 0.3s;
    }
    .swiper-pagination-bullet-active {
      background: #7a6e63; transform: scale(1.3);
    }

    /* ---- Product slides ---- */
    .product-content {
      flex: 1; display: flex; flex-direction: column;
      justify-content: center; align-items: center;
      width: 100%; gap: 2.5rem;
    }
    .product-badge {
      font-size: 0.65rem; letter-spacing: 0.2em; text-transform: uppercase;
      color: #7a6e63; border: 1px solid #d9d2c8;
      padding: 0.2rem 1rem; font-weight: 400;
    }
    .product-name {
      font-size: clamp(2rem, 4vw, 3.4rem); font-weight: 300;
      letter-spacing: 0.06em; text-align: center;
      color: #1e1c1a; max-width: 900px; line-height: 1.2;
    }
    .product-layout {
      display: flex; align-items: center; justify-content: center;
      width: 100%; gap: 4rem;
    }
    .product-image-wrap {
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
    }
    .product-image {
      width: auto; height: auto;
      max-width: 520px; max-height: 440px;
      object-fit: contain;
      filter: drop-shadow(0 8px 40px rgba(0,0,0,0.08));
    }
    .points-col {
      display: flex; flex-direction: column;
      justify-content: center; gap: 1.8rem;
      flex: 1; max-width: 400px;
    }
    .points-col.left { align-items: flex-end; text-align: right; }
    .points-col.right { align-items: flex-start; text-align: left; }
    .point-item {
      font-size: clamp(0.9rem, 1.5vw, 1.15rem); font-weight: 400;
      color: #2d2925; letter-spacing: 0.04em;
      line-height: 1.5; position: relative;
    }
    .points-col.left .point-item { padding-right: 1.5rem; border-right: 2px solid #d9d2c8; }
    .points-col.right .point-item { padding-left: 1.5rem; border-left: 2px solid #d9d2c8; }

    /* ---- About slide ---- */
    .about-content {
      flex: 1; display: flex; flex-direction: column;
      justify-content: center; align-items: center;
      width: 100%; max-width: 700px; margin: 0 auto;
      text-align: center; gap: 0.8rem;
    }
    .about-title {
      font-size: clamp(1.6rem, 3vw, 2.8rem); font-weight: 200;
      letter-spacing: 0.15em; color: #1e1c1a;
    }
    .about-desc {
      font-size: clamp(0.72rem, 1.1vw, 0.88rem); font-weight: 300;
      color: #5e544a; line-height: 1.9; max-width: 620px;
      overflow-y: auto; padding-right: 0.5rem;
    }
    .about-desc p {
      margin-bottom: 0.8rem;
    }
    .about-divider {
      width: 40px; height: 1.5px; background: #cbc2b6; margin: 0.4rem 0;
    }

    /* ---- Animations (initially hidden) ---- */
    .anim-up, .anim-up-d1, .anim-up-d2, .anim-up-d3, .anim-up-d4,
    .anim-left, .anim-left-d1, .anim-left-d2, .anim-left-d3,
    .anim-right, .anim-right-d1, .anim-right-d2, .anim-right-d3,
    .anim-scale, .anim-fade { opacity: 0; }

    .swiper-slide-active .anim-up { animation: fadeUp 0.8s cubic-bezier(0.16,1,0.3,1) forwards; }
    .swiper-slide-active .anim-up-d1 { animation: fadeUp 0.8s cubic-bezier(0.16,1,0.3,1) 0.15s forwards; }
    .swiper-slide-active .anim-up-d2 { animation: fadeUp 0.8s cubic-bezier(0.16,1,0.3,1) 0.3s forwards; }
    .swiper-slide-active .anim-up-d3 { animation: fadeUp 0.8s cubic-bezier(0.16,1,0.3,1) 0.45s forwards; }
    .swiper-slide-active .anim-up-d4 { animation: fadeUp 0.8s cubic-bezier(0.16,1,0.3,1) 0.6s forwards; }
    .swiper-slide-active .anim-left { animation: slideLeft 0.8s cubic-bezier(0.16,1,0.3,1) forwards; }
    .swiper-slide-active .anim-left-d1 { animation: slideLeft 0.8s cubic-bezier(0.16,1,0.3,1) 0.15s forwards; }
    .swiper-slide-active .anim-left-d2 { animation: slideLeft 0.8s cubic-bezier(0.16,1,0.3,1) 0.3s forwards; }
    .swiper-slide-active .anim-left-d3 { animation: slideLeft 0.8s cubic-bezier(0.16,1,0.3,1) 0.45s forwards; }
    .swiper-slide-active .anim-right { animation: slideRight 0.8s cubic-bezier(0.16,1,0.3,1) forwards; }
    .swiper-slide-active .anim-right-d1 { animation: slideRight 0.8s cubic-bezier(0.16,1,0.3,1) 0.15s forwards; }
    .swiper-slide-active .anim-right-d2 { animation: slideRight 0.8s cubic-bezier(0.16,1,0.3,1) 0.3s forwards; }
    .swiper-slide-active .anim-right-d3 { animation: slideRight 0.8s cubic-bezier(0.16,1,0.3,1) 0.45s forwards; }
    .swiper-slide-active .anim-scale { animation: scaleIn 0.9s cubic-bezier(0.16,1,0.3,1) 0.1s forwards; }
    .swiper-slide-active .anim-fade { animation: fadeUp 0.9s cubic-bezier(0.16,1,0.3,1) 0.3s forwards; }

    @keyframes fadeUp {
      0% { opacity: 0; transform: translateY(50px); }
      100% { opacity: 1; transform: translateY(0); }
    }
    @keyframes fadeIn {
      0% { opacity: 0; } 100% { opacity: 1; }
    }
    @keyframes slideLeft {
      0% { opacity: 0; transform: translateX(-60px); }
      100% { opacity: 1; transform: translateX(0); }
    }
    @keyframes slideRight {
      0% { opacity: 0; transform: translateX(60px); }
      100% { opacity: 1; transform: translateX(0); }
    }
    @keyframes scaleIn {
      0% { opacity: 0; transform: scale(0.7); }
      100% { opacity: 1; transform: scale(1); }
    }

    /* ---- Responsive ---- */
    @media (max-width: 768px) {
      .swiper-slide { padding: 1.5rem 1.2rem; }
      .navbar { padding: 0.6rem 1.2rem; }
      .logo { font-size: 1rem; }
      .logo small { font-size: 0.5rem; }
      .nav-links { gap: 1.2rem; font-size: 0.65rem; }
      .slide-content { padding-top: 3.5rem; }
      .product-image { max-width: 360px; max-height: 300px; }
      .points-col { max-width: 300px; gap: 1.2rem; }
      .product-layout { gap: 2.5rem; }
      .point-item { font-size: 1.1rem; }
      .product-content { gap: 2rem; }
      .hero-center { padding: 0.5rem 0; }
      .hero-intro { max-width: 100%; margin-top: 0.8rem; }
      .hero-intro p { font-size: 0.72rem; }
      .hero-intro h3 { font-size: 0.8rem; }
      .slide-footer { font-size: 0.55rem; flex-direction: column; align-items: flex-start; }
      .swiper-pagination { right: 1rem !important; gap: 0.7rem; }
      .swiper-pagination-bullet { width: 6px; height: 6px; }
    }
    @media (max-width: 640px) {
      .product-layout { flex-direction: column; gap: 0.6rem; }
      .points-col { flex-direction: row; flex-wrap: wrap; justify-content: center; max-width: 100%; gap: 0.3rem 1rem; }
      .points-col.left, .points-col.right { align-items: center; text-align: center; }
      .points-col.left .point-item, .points-col.right .point-item { border: none; padding: 0; }
      .product-image { max-width: 300px; max-height: 250px; }
      .point-item { font-size: 1rem; }
      .product-content { gap: 1.5rem; }
    }
    @media (max-width: 480px) {
      .swiper-slide { padding: 1rem 0.8rem; }
      .navbar { padding: 0.5rem 0.8rem; flex-direction: column; gap: 0.2rem; }
      .nav-links { gap: 0.8rem; font-size: 0.6rem; }
      .slide-content { padding-top: 4rem; }
      .product-image { max-width: 100px; max-height: 90px; }
      .product-name { font-size: 1rem; }
      .point-item { font-size: 0.6rem; }
    }