:root{--primary:#1b4e8f;--primary-weak:#eef3f9;--accent:#b4451f;--accent-bg:#fdf1ec;--bg:#f5f7fa;--surface:#fff;--text:#16202e;--text2:#465366;--muted:#77828f;--line:#e3e8ee;--ok:#14603a;--ok-bg:#e4f4ea;--warn:#9a5510;--warn-bg:#fdf3e7;--ng:#a32b21;--ng-bg:#fdeeec;--chip:#eef3f9;--radius:12px;--r-ctl:7px}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:Hiragino Sans,Yu Gothic UI,Noto Sans JP,sans-serif;font-size:15px;line-height:1.6}a{color:inherit}.container{max-width:960px;margin:0 auto;padding:0 16px}.site-header{background:#fff;color:var(--text);border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;gap:12px;height:52px}.logo{display:inline-flex;align-items:center;gap:7px;font-weight:800;font-size:20px;text-decoration:none;letter-spacing:-.01em;color:var(--text)}.logo img{width:26px;height:26px}.header-tag{font-size:12px;color:var(--text2)}.site-footer{margin-top:48px;padding:24px 0 40px;border-top:1px solid var(--line);color:var(--text2);font-size:13px}.hero{padding:24px 0 8px}.hero h1{font-size:22px;margin:0 0 4px;line-height:1.4}.hero p{margin:0 0 14px;color:var(--text2);font-size:13px}.search-box{position:-webkit-sticky;position:sticky;top:0;z-index:5;background:var(--bg);padding:8px 0 10px}.search-input{width:100%;font-size:18px;padding:14px 44px 14px 14px;border:2px solid var(--line);border-radius:var(--r-ctl);background:var(--surface);outline:none}.search-input:focus{border-color:var(--primary)}.search-wrap{position:relative}.clear-btn{position:absolute;right:8px;top:50%;transform:translateY(-50%);border:0;background:var(--chip);border-radius:50%;width:28px;height:28px;font-size:16px;cursor:pointer;color:var(--text2)}.examples{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.chip{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:5px 12px;font-size:13px;cursor:pointer;color:var(--text);text-decoration:none;white-space:nowrap}.chip.on,.chip:hover{border-color:var(--primary)}.chip.on{background:var(--primary);color:#fff}.understood{font-size:13px;color:var(--text2);margin:6px 0 0}.understood b{color:var(--text)}.understood{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.cond-chip{border:1px solid var(--primary);color:var(--primary);background:var(--primary-weak);border-radius:999px;padding:2px 10px;font-size:12px;cursor:pointer}.filters{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:12px 0}.seg{display:inline-flex;background:var(--chip);border-radius:8px;padding:3px}.seg button{border:0;background:transparent;padding:6px 10px;border-radius:6px;font-size:13px;cursor:pointer;color:var(--text)}.seg button.on{background:var(--surface);box-shadow:0 1px 2px rgba(0,0,0,.12);font-weight:700}.check,select{font-size:13px}select{padding:7px 8px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}.check{display:inline-flex;align-items:center;gap:4px;padding:6px 4px}.count{font-size:14px;margin:4px 0 10px}.count b{font-size:18px}.size-facets{display:flex;flex-wrap:nowrap;gap:6px;margin:0 0 12px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}.size-facets .chip{flex:0 0 auto}.list{list-style:none;padding:0;margin:0;grid-gap:10px;gap:10px}.item,.list{display:grid}.item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;grid-template-columns:1fr auto;grid-gap:4px 12px;gap:4px 12px}.item-maker{font-size:12px;color:var(--text2)}.item-name{font-weight:700;font-size:15px;line-height:1.4}.item-sub{font-size:12px;color:var(--text2);margin-top:1px;word-break:break-all}.item-size{font-size:14px;margin-top:2px}.item-size b{font-size:16px}.badges{display:flex;flex-wrap:wrap;gap:4px;margin-top:6px}.badge{font-size:11px;padding:2px 7px;border-radius:4px;background:var(--chip);color:var(--text)}.badge.season-studless{background:var(--primary-weak);color:var(--primary)}.badge.season-allseason{background:var(--warn-bg);color:var(--warn)}.badge.season-summer{background:var(--bg);color:var(--text2);border:1px solid var(--line)}.badge.label{background:var(--ok-bg);color:var(--ok)}.price{text-align:right;white-space:nowrap}.price-one{font-size:20px;font-weight:800}.price-one small{font-size:11px;font-weight:400;color:var(--text2);margin-left:2px}.price-four{font-size:12px;color:var(--text2)}.stock{font-size:12px;margin-top:4px}.stock.ok{color:var(--ok);font-weight:700}.stock.ng{color:var(--text2)}.buy{grid-column:1/-1;justify-self:end;margin-top:6px;background:var(--primary);color:#fff;text-decoration:none;font-size:13px;font-weight:700;padding:8px 14px;border-radius:var(--r-ctl)}.more{display:block;width:100%;margin:14px 0;padding:12px;font-size:14px;border:1px solid var(--line);border-radius:var(--radius);cursor:pointer}.empty,.more{background:var(--surface)}.empty{border:1px dashed var(--line);border-radius:var(--radius);padding:18px}.empty h2{font-size:16px;margin:0 0 8px}.section-title{font-size:17px;margin:28px 0 10px}.size-grid{display:flex;flex-wrap:wrap;gap:6px}.breadcrumb{font-size:12px;color:var(--text2);margin:14px 0 0}.page-title{font-size:22px;margin:6px 0 4px}.lead{color:var(--text2);font-size:13px;margin:0 0 12px}.prose{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}@media (max-width:560px){.hero{padding-top:14px}.hero h1{font-size:18px}.filters{gap:6px}.filters select{flex:1 1 45%}.item{grid-template-columns:1fr}.price{text-align:left;display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}.buy{justify-self:stretch;text-align:center}}.page-title-sub{font-size:14px;font-weight:400;color:var(--text2);margin-left:4px}.gen{margin-top:8px}.gen-meta{font-size:12px;color:var(--text2);margin:-4px 0 10px}.gen-sizes{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));grid-gap:8px;gap:8px;margin-bottom:12px}.size-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:10px 12px;text-decoration:none}.size-card:hover{border-color:var(--primary)}.size-card b{font-size:17px}.size-card span{font-size:12px;color:var(--text2)}.table-wrap{overflow-x:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}.fit-table{border-collapse:collapse;width:100%;font-size:13px}.fit-table td,.fit-table th{padding:7px 10px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}.fit-table th{background:var(--bg);font-weight:600}.fit-table small,.fit-table th,.source{color:var(--text2)}.source{font-size:12px;margin:6px 0 0}.source a{margin-right:8px}.notice{margin-top:28px;background:var(--warn-bg);border:1px solid var(--line);border-radius:var(--radius);padding:12px 16px;font-size:13px}.notice ul{margin:6px 0 0;padding-left:18px}.car-box{background:var(--surface);border:2px solid var(--primary);border-radius:var(--radius);padding:12px 14px;margin:10px 0 14px}.car-box-title{font-weight:700;margin-bottom:6px}.car-box-title a{font-size:12px;font-weight:400;margin-left:8px}.car-gen{font-size:13px;margin:6px 0 2px;color:var(--text2)}.car-gen b{color:var(--text)}.header-nav{margin-left:auto;font-size:13px}.header-nav a{color:var(--primary);text-decoration:none;border:1px solid var(--line);border-radius:var(--r-ctl);padding:4px 10px;font-weight:700}.car-note{font-size:11px;color:var(--text2);margin:8px 0 0}.gen-notes{font-size:12px;color:var(--text2);margin-top:6px}.gen-notes ul{margin:4px 0 0;padding-left:18px}@media (max-width:560px){.header-tag{display:none}}.header-nav a{white-space:nowrap}.hero-rich{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;grid-gap:24px;gap:24px;background:#fff;box-shadow:0 0 0 100vmax #fff;-webkit-clip-path:inset(0 -100vmax);clip-path:inset(0 -100vmax);padding:36px 0 12px}.hero-eyebrow{margin:0 0 8px;font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.04em}.hero-rich h1{margin:0 0 14px;font-size:40px;line-height:1.3;font-weight:800;letter-spacing:-.01em}.hero-rich h1 .hl{color:var(--primary)}.hero-lead{margin:0;color:var(--text2);font-size:15px;line-height:1.9}.hero-art img{display:block;width:100%;height:auto}.search-box-hero{background:#fff;box-shadow:0 0 0 100vmax #fff;-webkit-clip-path:inset(0 -100vmax);clip-path:inset(0 -100vmax);padding:4px 0 26px;margin:0}.search-box-hero .search-input{height:56px;font-size:17px;box-shadow:0 6px 18px rgba(27,78,143,.1)}.examples{margin-top:18px}.stats{list-style:none;margin:26px 0 0;padding:16px 8px;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:var(--radius)}.stats li{display:flex;flex-direction:column;align-items:center;gap:2px;border-left:1px solid var(--line)}.stats li:first-child{border-left:0}.stats b{font-size:24px;font-weight:800;color:var(--primary);line-height:1.2}.stats span{font-size:12px;color:var(--text2)}.pillars{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:14px;gap:14px;margin:26px 0 8px}.pillar{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:10px 16px 16px;text-decoration:none;color:var(--text);transition:border-color .15s,box-shadow .15s}.pillar:hover{border-color:var(--primary);box-shadow:0 6px 18px rgba(27,78,143,.1)}.pillar img{display:block;width:100%;height:auto}.pillar h2{margin:4px 0 6px;font-size:17px;color:var(--primary)}.pillar p{margin:0;font-size:13px;color:var(--text2);line-height:1.8}.chip-count{margin-left:4px;font-size:11px;color:var(--muted)}.section-title{scroll-margin-top:16px}@media (max-width:760px){.hero-rich{grid-template-columns:1fr;gap:0;padding-top:20px}.hero-art{order:-1;max-width:360px;margin:0 auto}.hero-rich h1{font-size:28px}.hero-lead{font-size:14px}.stats{grid-template-columns:repeat(2,1fr);row-gap:12px}.stats li:nth-child(3){border-left:0}.pillars{grid-template-columns:1fr}.pillar{display:grid;grid-template-columns:120px 1fr;grid-column-gap:12px;column-gap:12px;align-items:center;padding:10px 12px}.pillar picture{grid-row:span 2}.pillar h2{margin:0 0 2px;font-size:16px}}.footer-sep{margin:0 8px;color:var(--line)}.market{margin-top:28px;padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}.market .section-title{margin-top:4px}.market-list{list-style:none;margin:0;padding:0}.market-item{padding:10px 0;border-top:1px solid var(--line)}.market-item:first-child{border-top:0}.market-name{font-size:14px;font-weight:700;margin-bottom:4px}.market-shops{list-style:none;margin:0;padding:0;display:grid;grid-gap:2px;gap:2px}.market-shops li{display:grid;grid-template-columns:1fr auto;grid-column-gap:12px;column-gap:12px;align-items:baseline;font-size:13px;padding:3px 0}.market-shops a{color:var(--primary);overflow-wrap:anywhere}.market-shops b{text-align:right}.market-shops .muted{grid-column:1/-1;font-size:12px}.market-credit{margin:10px 0 0;font-size:11px;text-align:right}.market-credit a,.market-note{color:var(--text2)}.market-note{margin:10px 0 0;font-size:12px;line-height:1.7}