@font-face {
    font-family: "Playfair Display";
    src: url(../fonts/PlayfairDisplay-VariableFont_wght.ttf);
    font-display: swap;
}

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #fafafa;
    color: #1e1e1e;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
main {
    flex: 1;
}
a {
    text-decoration: none;
    color: inherit;
}
img {
    display: block;
    max-width: 100%;
    height: auto;
}
ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    padding: 14px 0;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px 20px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.02em;
    color: #1a1a1a;
}
.logo img {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    object-fit: cover;
}
.logo span {
    line-height: 1.2;
}
.logo .sub {
    display: block;
    font-weight: 400;
    font-size: 0.6rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #6b6b6b;
    margin-top: -2px;
}
.header-notice {
    font-size: 0.7rem;
    color: #6b6b6b;
    background: rgba(0, 0, 0, 0.04);
    padding: 4px 14px;
    border-radius: 100px;
    letter-spacing: 0.02em;
    white-space: nowrap;
}
.header-nav {
    display: flex;
    align-items: center;
    gap: 24px;
    font-size: 0.9rem;
    font-weight: 500;
}
.header-nav a {
    color: #2d2d2d;
    transition: color 0.2s;
    position: relative;
}
.header-nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #1a1a1a;
    transition: width 0.25s;
}
.header-nav a:hover::after {
    width: 100%;
}
.header-nav a:hover {
    color: #000;
}
.header-nav .btn-outline {
    background: transparent;
    border: 1.5px solid #1a1a1a;
    padding: 6px 18px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.8rem;
    transition: all 0.25s;
    cursor: pointer;
    color: #1a1a1a;
}
.header-nav .btn-outline:hover {
    background: #1a1a1a;
    color: #fff;
}
.header-nav .btn-outline::after {
    display: none;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
    background: none;
    border: none;
}
.hamburger span {
    display: block;
    width: 26px;
    height: 2px;
    background: #1a1a1a;
    transition: 0.25s;
    border-radius: 2px;
}

.hero {
    padding: 80px 0 64px;
    background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.03) 0%, transparent 70%);
    pointer-events: none;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}
.hero-content h1 {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: 3.6rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: #121212;
    margin-bottom: 20px;
}
.hero-content h1 em {
    font-style: italic;
    color: #3a3a3a;
}
.hero-content p {
    font-size: 1.15rem;
    color: #3d3d3d;
    max-width: 480px;
    margin-bottom: 32px;
    font-weight: 400;
    line-height: 1.7;
}
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}
.hero-image img {
    width: 100%;
    max-width: 560px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
    object-fit: cover;
    aspect-ratio: 4/3;
    background: #ddd;
}

.btn-primary {
    display: inline-block;
    background: #1a1a1a;
    color: #fff;
    padding: 14px 40px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    letter-spacing: 0.01em;
}
.btn-primary:hover {
    background: #000;
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.15);
}
.btn-secondary {
    display: inline-block;
    background: transparent;
    color: #1a1a1a;
    padding: 12px 32px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.95rem;
    border: 1.5px solid #1a1a1a;
    cursor: pointer;
    transition: all 0.3s ease;
}
.btn-secondary:hover {
    background: #1a1a1a;
    color: #fff;
}

.section {
    padding: 72px 0;
}
.section--light {
    background: #ffffff;
}
.section--gray {
    background: #f6f6f6;
}
.section--dark {
    background: #1a1a1a;
    color: #f0f0f0;
}
.section--dark .section-title {
    color: #fff;
}
.section--dark .section-sub {
    color: #b0b0b0;
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: 2.6rem;
    letter-spacing: -0.02em;
    color: #121212;
    margin-bottom: 12px;
    line-height: 1.2;
}
.section-sub {
    font-size: 1.05rem;
    color: #555;
    max-width: 560px;
    margin-bottom: 40px;
    font-weight: 400;
}
.section-title-center {
    text-align: center;
}
.section-sub-center {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.info-card {
    background: #fff;
    padding: 36px 32px;
    border-radius: 18px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.info-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.06);
}
.info-card .icon {
    font-size: 2.2rem;
    color: #2d2d2d;
    margin-bottom: 16px;
    display: block;
}
.info-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: #121212;
}
.info-card p {
    font-size: 0.95rem;
    color: #4a4a4a;
    line-height: 1.7;
}

.product-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    padding: 40px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}
.product-item:last-child {
    border-bottom: none;
}
.product-item .image-wrap {
    border-radius: 16px;
    overflow: hidden;
    background: #eee;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}
.product-item .image-wrap img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    display: block;
}
.product-info h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: #121212;
    margin-bottom: 6px;
}
.product-info .price {
    font-weight: 700;
    font-size: 1.3rem;
    color: #1a1a1a;
    margin: 10px 0 14px;
    letter-spacing: 0.01em;
}
.product-info .price small {
    font-weight: 400;
    font-size: 0.9rem;
    color: #6b6b6b;
}
.product-info p {
    color: #3d3d3d;
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 16px;
}
.product-info .btn-primary {
    padding: 10px 32px;
    font-size: 0.85rem;
}
.product-info .btn-primary i {
    margin-right: 8px;
}

.tech-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}
.tech-grid .image-wrap {
    border-radius: 16px;
    overflow: hidden;
    background: #eee;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}
.tech-grid .image-wrap img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}
.tech-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 24px;
    margin: 20px 0 28px;
}
.tech-list li {
    font-size: 0.95rem;
    color: #2d2d2d;
    display: flex;
    align-items: center;
    gap: 8px;
}
.tech-list li::before {
    content: '—';
    color: #8a8a8a;
    font-weight: 300;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 12px;
}
.gallery-grid .gallery-item {
    border-radius: 14px;
    overflow: hidden;
    background: #eee;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    aspect-ratio: 4/3;
}
.gallery-grid .gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.gallery-grid .gallery-item img:hover {
    transform: scale(1.03);
}

.article-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}
.article-grid .text-block h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: #121212;
    margin-bottom: 12px;
}
.article-grid .text-block p {
    color: #3d3d3d;
    font-size: 0.98rem;
    line-height: 1.8;
    margin-bottom: 16px;
}
.article-grid .text-block ul {
    list-style: disc;
    padding-left: 20px;
    color: #3d3d3d;
    font-size: 0.95rem;
    line-height: 1.8;
}
.article-grid .text-block ul li {
    margin-bottom: 6px;
}
.article-grid .image-wrap {
    border-radius: 16px;
    overflow: hidden;
    background: #eee;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}
.article-grid .image-wrap img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

.form-section {
    background: #f0f0f0;
}
.form-wrap {
    max-width: 720px;
    margin: 0 auto;
    background: #fff;
    padding: 48px 56px;
    border-radius: 24px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.04);
}
.form-wrap h2 {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 6px;
    color: #121212;
}
.form-wrap .form-sub {
    text-align: center;
    color: #555;
    margin-bottom: 32px;
    font-size: 1rem;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    color: #1e1e1e;
    margin-bottom: 4px;
    letter-spacing: 0.02em;
}
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid #ddd;
    border-radius: 12px;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    background: #fcfcfc;
    transition: border-color 0.25s, box-shadow 0.25s;
    outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: #1a1a1a;
    box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.04);
    background: #fff;
}
.form-group textarea {
    min-height: 120px;
    resize: vertical;
}
.form-group .checkbox-wrap {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.85rem;
    color: #4a4a4a;
}
.form-group .checkbox-wrap input {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 2px;
    accent-color: #1a1a1a;
}
.form-group .checkbox-wrap a {
    color: #1a1a1a;
    font-weight: 600;
    text-decoration: underline;
}
.form-wrap .btn-primary {
    width: 100%;
    justify-content: center;
    padding: 16px;
    font-size: 1.05rem;
}

.footer {
    background: #121212;
    color: #c8c8c8;
    padding: 48px 0 24px;
    margin-top: auto;
}
.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    align-items: start;
}
.footer-brand .logo {
    color: #fff;
    margin-bottom: 8px;
}
.footer-brand .logo .sub {
    color: #888;
}
.footer-brand p {
    font-size: 0.85rem;
    line-height: 1.7;
    max-width: 320px;
    color: #a0a0a0;
}
.footer-brand .legal {
    font-size: 0.75rem;
    color: #777;
    margin-top: 12px;
    line-height: 1.6;
}
.footer-col h4 {
    color: #fff;
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 12px;
    letter-spacing: 0.03em;
}
.footer-col ul li {
    font-size: 0.85rem;
    margin-bottom: 6px;
    color: #a0a0a0;
    line-height: 1.6;
}
.footer-col ul li strong {
    color: #d0d0d0;
    font-weight: 500;
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    margin-top: 32px;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.75rem;
    color: #777;
}
.footer-bottom a {
    color: #999;
    transition: color 0.2s;
}
.footer-bottom a:hover {
    color: #fff;
}
.footer-bottom .legal-links {
    display: flex;
    gap: 20px;
}

@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    .hero-content p {
        margin-left: auto;
        margin-right: auto;
    }
    .hero-image img {
        max-width: 100%;
    }
    .info-grid {
        grid-template-columns: 1fr 1fr;
    }
    .product-item {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .product-item .image-wrap {
        order: -1;
    }
    .tech-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .article-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .gallery-grid {
        grid-template-columns: 1fr 1fr;
    }
    .footer-inner {
        grid-template-columns: 1fr 1fr;
    }
    .header-nav {
        display: none;
    }
    .header-nav.open {
        display: flex;
        flex-direction: column;
        width: 100%;
        padding: 16px 0 8px;
        gap: 14px;
        align-items: flex-start;
    }
    .header-nav.open a {
        font-size: 1rem;
    }
    .hamburger {
        display: flex;
    }
    .form-wrap {
        padding: 32px 24px;
    }
}

@media (max-width: 640px) {
    .hero {
        padding: 48px 0 40px;
    }
    .hero-content h1 {
        font-size: 2.4rem;
    }
    .section {
        padding: 48px 0;
    }
    .section-title {
        font-size: 2rem;
    }
    .info-grid {
        grid-template-columns: 1fr;
    }
    .gallery-grid {
        grid-template-columns: 1fr 1fr;
    }
    .gallery-grid .gallery-item:last-child {
        display: none;
    }
    .footer-inner {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
    .footer-bottom .legal-links {
        flex-wrap: wrap;
        gap: 12px;
    }
    .header-notice {
        font-size: 0.6rem;
        padding: 2px 10px;
        white-space: normal;
    }
    .product-info h3 {
        font-size: 1.5rem;
    }
    .tech-list {
        grid-template-columns: 1fr;
    }
    .form-wrap {
        padding: 24px 16px;
    }
    body {
        word-break: break-word;
    }
}