:root{--color-bg: #FFFFFF;--color-text: #1A1A1A;--color-accent: #4A4A4A;--color-border: #E5E5E5;--color-hover: #F8F8F8;--color-button: #1A1A1A;--color-button-text: #FFFFFF;--color-muted: #999999;--font-display: "Cormorant Garamond", "Georgia", serif;--font-body: "Shippori Mincho", "Yu Mincho", "游明朝", serif;--space-xs: .5rem;--space-sm: 1rem;--space-md: 2rem;--space-lg: 4rem;--space-xl: 6rem;--space-2xl: 8rem;--container-max: 1400px;--container-narrow: 900px;--transition-base: .3s ease;--transition-slow: .6s ease}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-body);color:var(--color-text);background-color:var(--color-bg);line-height:1.8;letter-spacing:.02em;overflow-x:hidden}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}ul,ol{list-style:none}button{background:none;border:none;cursor:pointer;font-family:inherit;color:inherit}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:400;line-height:1.3;letter-spacing:.04em}h1{font-size:clamp(2.5rem,6vw,5rem);font-weight:300}h2{font-size:clamp(1.8rem,4vw,3rem)}h3{font-size:clamp(1.3rem,2.5vw,1.8rem)}p{font-family:var(--font-body);font-size:.95rem;line-height:2;color:var(--color-accent)}.container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 var(--space-md)}.container--narrow{max-width:var(--container-narrow)}.section{padding:var(--space-xl) 0}.text-center{text-align:center}.text-right{text-align:right}.flex{display:flex}.flex-center{display:flex;justify-content:center;align-items:center}.flex-between{display:flex;justify-content:space-between;align-items:center}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.btn{display:inline-block;padding:.8rem 2rem;font-family:var(--font-body);font-size:.85rem;letter-spacing:.08em;border:1px solid var(--color-text);background-color:transparent;color:var(--color-text);cursor:pointer;transition:all var(--transition-base);border-radius:0}.btn:hover{background-color:var(--color-text);color:var(--color-button-text)}.btn--filled{background-color:var(--color-button);color:var(--color-button-text);border-color:var(--color-button)}.btn--filled:hover{background-color:transparent;color:var(--color-text)}.btn--sm{padding:.5rem 1.2rem;font-size:.75rem}.chair-card-wrapper{perspective:1200px;cursor:pointer}.chair-card{position:relative;overflow:hidden;background-color:var(--color-bg);transition:transform var(--transition-slow);transform-origin:left center;transform-style:preserve-3d}.chair-card-wrapper:hover .chair-card{transform:rotateY(-8deg) scale(1.02);box-shadow:8px 4px 20px #00000014}.chair-card__back{position:absolute;top:0;right:-30px;width:60px;height:100%;background:var(--color-hover);display:flex;flex-direction:column;justify-content:center;align-items:center;font-family:var(--font-display);font-size:.85rem;color:var(--color-accent);opacity:0;transition:opacity var(--transition-base);transform:rotateY(5deg);backface-visibility:hidden;writing-mode:vertical-rl;letter-spacing:.1em;border-left:1px solid var(--color-border)}.chair-card-wrapper:hover .chair-card__back{opacity:1}.chair-card__image{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow)}.chair-card-wrapper:hover .chair-card__image{transform:scale(1.03)}.chair-card__info{position:absolute;bottom:0;left:0;right:0;padding:var(--space-sm) var(--space-md);background:linear-gradient(transparent,#fffffff2)}.chair-card__name{font-family:var(--font-display);font-size:1.1rem;font-weight:500;margin-bottom:.2rem}.chair-card__designer{font-family:var(--font-body);font-size:.75rem;color:var(--color-muted)}.chair-card__year{font-family:var(--font-display);font-size:.75rem;color:var(--color-muted)}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;backdrop-filter:blur(4px);z-index:1000;display:none;justify-content:center;align-items:center;opacity:0;transition:opacity var(--transition-base)}.modal-overlay.is-open{display:flex;opacity:1}.modal{background:var(--color-bg);width:90%;max-width:1000px;max-height:90vh;overflow-y:auto;position:relative;transform:translateY(20px);transition:transform var(--transition-base)}.modal-overlay.is-open .modal{transform:translateY(0)}.modal__close{position:sticky;top:var(--space-sm);float:right;margin-right:var(--space-sm);width:40px;height:40px;display:flex;justify-content:center;align-items:center;font-size:1.5rem;color:var(--color-accent);z-index:10;transition:color var(--transition-base)}.modal__close:hover{color:var(--color-text)}.modal__content{padding:var(--space-lg)}.modal__image{width:100%;max-height:500px;object-fit:contain;margin-bottom:var(--space-lg)}.modal__title{font-family:var(--font-display);font-size:2.2rem;margin-bottom:var(--space-xs)}.modal__subtitle{font-family:var(--font-body);font-size:1rem;color:var(--color-muted);margin-bottom:var(--space-md)}.modal__description{font-size:.95rem;line-height:2;margin-bottom:var(--space-lg)}.modal__specs{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--space-sm);padding:var(--space-md) 0;border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);margin-bottom:var(--space-lg)}.modal__spec-item{display:flex;flex-direction:column}.modal__spec-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.12em;color:var(--color-muted);margin-bottom:.3rem;font-family:var(--font-display)}.modal__spec-value{font-size:.9rem;font-family:var(--font-body)}.modal__buy-links{display:flex;gap:var(--space-sm);flex-wrap:wrap;margin-bottom:var(--space-lg)}.modal__related{border-top:1px solid var(--color-border);padding-top:var(--space-lg)}.modal__related-title{font-family:var(--font-display);font-size:1.3rem;margin-bottom:var(--space-md)}.modal__related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:var(--space-sm)}.filter-bar{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-md) 0;flex-wrap:wrap;border-bottom:1px solid var(--color-border);margin-bottom:var(--space-lg)}.filter-btn{padding:.4rem 1.2rem;font-family:var(--font-display);font-size:.85rem;letter-spacing:.06em;border:1px solid var(--color-border);background:transparent;color:var(--color-accent);cursor:pointer;transition:all var(--transition-base);border-radius:0}.filter-btn:hover,.filter-btn.is-active{background-color:var(--color-text);color:var(--color-button-text);border-color:var(--color-text)}.filter-price{display:flex;align-items:center;gap:var(--space-xs);margin-left:auto;font-size:.8rem;color:var(--color-accent);font-family:var(--font-body)}.filter-price input[type=range]{width:120px;accent-color:var(--color-text)}.chair-grid{display:grid;gap:var(--space-sm)}.chair-grid__group{display:grid;gap:var(--space-sm);grid-template-columns:2fr 1fr;grid-template-rows:repeat(3,1fr)}.chair-grid__group:nth-child(2n){grid-template-columns:1fr 2fr}.chair-grid__group .chair-card-wrapper:first-child{grid-row:1 / 4}.chair-grid__group:nth-child(2n) .chair-card-wrapper:first-child{grid-column:2;grid-row:1 / 4}.chair-grid__group:nth-child(2n) .chair-card-wrapper:not(:first-child){grid-column:1}.chair-card--large{aspect-ratio:3 / 4}.chair-card--small{aspect-ratio:1 / 1}.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:#fffffff2;backdrop-filter:blur(10px);border-bottom:1px solid var(--color-border);padding:var(--space-sm) var(--space-md)}.site-header__inner{max-width:var(--container-max);margin:0 auto;display:flex;justify-content:space-between;align-items:center}.site-header__logo{font-family:var(--font-display);font-size:1.3rem;font-weight:400;letter-spacing:.08em;color:var(--color-text)}.site-header__nav{display:flex;gap:var(--space-md)}.site-header__nav a{font-family:var(--font-display);font-size:.85rem;letter-spacing:.06em;color:var(--color-accent);transition:color var(--transition-base);position:relative}.site-header__nav a:after{content:"";position:absolute;bottom:-4px;left:0;width:0;height:1px;background:var(--color-text);transition:width var(--transition-base)}.site-header__nav a:hover{color:var(--color-text)}.site-header__nav a:hover:after{width:100%}.site-header__menu-toggle{display:none;flex-direction:column;gap:5px;padding:4px}.site-header__menu-toggle span{display:block;width:24px;height:1px;background:var(--color-text);transition:all var(--transition-base)}.site-footer{border-top:1px solid var(--color-border);padding:var(--space-lg) var(--space-md);text-align:center}.site-footer__inner{max-width:var(--container-max);margin:0 auto}.site-footer__logo{font-family:var(--font-display);font-size:1.1rem;letter-spacing:.08em;margin-bottom:var(--space-sm)}.site-footer__text{font-size:.75rem;color:var(--color-muted);letter-spacing:.04em}.site-footer__links{display:flex;justify-content:center;gap:var(--space-md);margin-bottom:var(--space-sm)}.site-footer__links a{font-size:.8rem;color:var(--color-accent);transition:color var(--transition-base)}.site-footer__links a:hover{color:var(--color-text)}.hero{padding:calc(var(--space-2xl) + 60px) var(--space-md) var(--space-xl);text-align:center}.hero__title{font-family:var(--font-display);font-size:clamp(3rem,8vw,6rem);font-weight:300;letter-spacing:.06em;margin-bottom:var(--space-sm);color:var(--color-text)}.hero__subtitle{font-family:var(--font-body);font-size:clamp(.85rem,2vw,1.1rem);color:var(--color-muted);letter-spacing:.15em}.page-header{padding:calc(var(--space-2xl) + 60px) var(--space-md) var(--space-lg);text-align:center;border-bottom:1px solid var(--color-border)}.page-header__title{font-family:var(--font-display);font-size:clamp(2rem,5vw,3.5rem);font-weight:300;margin-bottom:var(--space-xs)}.page-header__description{font-size:.9rem;color:var(--color-muted)}.designer-card{display:block;padding:var(--space-md);border:1px solid var(--color-border);transition:all var(--transition-base)}.designer-card:hover{background-color:var(--color-hover);border-color:var(--color-accent)}.designer-card__name{font-family:var(--font-display);font-size:1.3rem;margin-bottom:.3rem}.designer-card__name-ja{font-size:.8rem;color:var(--color-muted);margin-bottom:var(--space-xs)}.designer-card__meta{font-size:.75rem;color:var(--color-muted)}.article-card{display:block;border:1px solid var(--color-border);transition:all var(--transition-base)}.article-card:hover{border-color:var(--color-accent)}.article-card__body{padding:var(--space-md)}.article-card__category{font-family:var(--font-display);font-size:.7rem;text-transform:uppercase;letter-spacing:.12em;color:var(--color-muted);margin-bottom:var(--space-xs)}.article-card__title{font-family:var(--font-body);font-size:1.05rem;font-weight:500;line-height:1.6;margin-bottom:var(--space-xs)}.article-card__excerpt{font-size:.8rem;color:var(--color-accent);line-height:1.8}.compare-selector{display:grid;grid-template-columns:1fr auto 1fr;gap:var(--space-md);align-items:center;padding:var(--space-lg) 0}.compare-vs{font-family:var(--font-display);font-size:1.5rem;color:var(--color-muted)}.compare-table{width:100%;border-collapse:collapse}.compare-table th,.compare-table td{padding:var(--space-sm) var(--space-md);border-bottom:1px solid var(--color-border);text-align:left;font-size:.85rem}.compare-table th{font-family:var(--font-display);font-weight:400;font-size:.75rem;text-transform:uppercase;letter-spacing:.1em;color:var(--color-muted)}.article-layout{max-width:var(--container-narrow);margin:0 auto;padding:var(--space-xl) var(--space-md)}.article-layout h1{font-family:var(--font-body);font-size:clamp(1.5rem,4vw,2.2rem);font-weight:600;line-height:1.5;margin-bottom:var(--space-md)}.article-layout h2{font-family:var(--font-body);font-size:1.3rem;font-weight:600;margin-top:var(--space-lg);margin-bottom:var(--space-sm);padding-bottom:var(--space-xs);border-bottom:1px solid var(--color-border)}.article-layout h3{font-family:var(--font-body);font-size:1.1rem;font-weight:600;margin-top:var(--space-md);margin-bottom:var(--space-sm)}.article-layout p{margin-bottom:var(--space-md)}.article-layout ul,.article-layout ol{margin-bottom:var(--space-md);padding-left:1.5rem}.article-layout li{margin-bottom:var(--space-xs);font-size:.95rem;line-height:2;list-style:disc}.article-layout ol li{list-style:decimal}@media(max-width:768px){:root{--space-lg: 3rem;--space-xl: 4rem;--space-2xl: 5rem}.site-header__menu-toggle{display:flex}.site-header__nav{position:fixed;top:0;right:-100%;width:70%;height:100vh;background:var(--color-bg);flex-direction:column;padding:var(--space-2xl) var(--space-lg);gap:var(--space-md);border-left:1px solid var(--color-border);transition:right var(--transition-base);z-index:200}.site-header__nav.is-open{right:0}.site-header__nav a{font-size:1.1rem}.chair-grid__group{grid-template-columns:1fr 1fr;grid-template-rows:auto}.chair-grid__group .chair-card-wrapper:first-child{grid-row:auto;grid-column:1 / -1}.chair-grid__group:nth-child(2n) .chair-card-wrapper:first-child{grid-column:1 / -1;grid-row:auto}.chair-grid__group:nth-child(2n) .chair-card-wrapper:not(:first-child){grid-column:auto}.chair-card--large{aspect-ratio:16 / 9}.filter-bar{overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch}.filter-price{margin-left:0;width:100%;margin-top:var(--space-xs)}.modal{width:100%;max-height:100vh;height:100vh}.modal__content{padding:var(--space-md)}.modal__buy-links{flex-direction:column}.compare-selector{grid-template-columns:1fr;text-align:center}.compare-table{font-size:.8rem}.compare-table th,.compare-table td{padding:var(--space-xs)}}@media(max-width:480px){.hero__title{font-size:2.5rem}.chair-grid__group{grid-template-columns:1fr}.chair-card--small{aspect-ratio:4 / 3}.modal__specs{grid-template-columns:1fr 1fr}}body.modal-open{overflow:hidden}