:root{color-scheme:light;--color-ink: #0d1b2e;--color-muted: #4f6577;--color-soft: #f8f6f0;--color-line: #e5e0d6;--color-panel: #ffffff;--color-ice: #8fb6cf;--color-pale: #d7e8f1;--color-solar: #365f7d;--color-cable: #203f56;--color-footer: #203f56;--radius: 8px;--shadow-soft: 0 18px 40px rgba(13, 27, 46, .07)}*{box-sizing:border-box}html{min-width:320px;background:var(--color-soft)}body{margin:0;color:var(--color-ink);font-family:Noto Sans JP,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.75;letter-spacing:0}a{color:inherit;text-decoration-color:#176f8a59;text-underline-offset:.2em}a:hover{color:var(--color-solar);text-decoration-color:currentColor}.site-header{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;min-height:92px;border-bottom:1px solid var(--color-line);background:#ffffffeb;padding:18px max(32px,calc((100% - 1120px)/2))}.site-logo,.site-nav{display:flex;align-items:center}.site-logo{gap:12px;color:var(--color-ink);font-weight:800;text-decoration:none}.site-logo__mark{display:grid;width:44px;height:44px;place-items:center;border:1px solid var(--color-ice);border-radius:14px;background:var(--color-pale);color:var(--color-cable);box-shadow:inset 0 0 0 1px #ffffff80}.site-logo__mark svg{width:25px;height:25px;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:2}.site-logo__wordmark{font-family:DM Sans,Noto Sans JP,system-ui,sans-serif;font-size:1.9rem;font-weight:800;line-height:1}.site-logo__wordmark span{color:var(--color-solar)}.site-nav{gap:12px}.site-nav a{border-radius:var(--radius);padding:8px 10px;color:var(--color-muted);font-family:DM Sans,system-ui,sans-serif;font-size:1rem;font-weight:700;text-decoration:none}.site-nav a:hover{background:var(--color-pale);color:var(--color-solar)}.site-footer{margin-top:48px;background:var(--color-footer);color:#c8d8e6}.site-footer__inner{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(420px,.9fr);gap:56px;width:min(1120px,calc(100% - 32px));margin:0 auto;padding:58px 0}.site-footer__brand{display:grid;gap:24px;align-content:start}.site-footer__brand p{max-width:420px;margin:0;color:#c8d8e6;font-size:1rem}.site-logo--footer{color:#fff}.site-logo--footer .site-logo__wordmark span{color:var(--color-ice)}.footer-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px}.footer-nav section{display:grid;gap:12px;align-content:start}.footer-nav h2{margin:0 0 8px;color:var(--color-ice);font-family:DM Sans,system-ui,sans-serif;font-size:.88rem;text-transform:uppercase}.footer-nav a,.footer-nav span{color:#e9f2f8;font-size:1rem;font-weight:700;text-decoration:none}.footer-nav span{color:#aabfd0}.section{padding:48px 0}.section--white{background:var(--color-panel)}.section__inner,.page-shell{width:min(1120px,calc(100% - 32px));margin:0 auto}.intro-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,440px);gap:32px;align-items:center;padding:36px 0 44px}.eyebrow{margin:0 0 8px;color:var(--color-solar);font-family:DM Sans,system-ui,sans-serif;font-size:.88rem;font-weight:800}.eyebrow--rule{display:inline-flex;align-items:center;gap:10px;text-transform:uppercase}.eyebrow--rule:before{display:block;width:44px;height:2px;background:var(--color-ice);content:""}h1,h2,h3{margin:0;line-height:1.25}h1{max-width:840px;font-size:4rem}h2{font-size:1.65rem}h3{font-size:1.05rem}.lead{max-width:720px;margin:18px 0 0;color:var(--color-muted);font-size:1.05rem}.home-hero{min-height:440px;background:linear-gradient(90deg,#203f56fa,#203f56f0 44%,#203f5694 74%,#203f5670),url(/images/sbhp.webp);background-position:center;background-size:cover;color:#fff}.home-hero__inner{display:grid;align-items:center;width:min(1120px,calc(100% - 32px));min-height:440px;margin:0 auto;padding:64px 0}.home-hero__copy{max-width:680px}.home-hero .eyebrow{color:var(--color-ice)}.home-hero h1{color:#fff;font-size:clamp(2.6rem,6vw,4.8rem)}.home-hero .lead{color:#e2edf5;font-size:1.18rem}.home-hero .button{border-color:#ffffff5c;background:#fffffff0;color:var(--color-cable)}.home-hero .button--primary{border-color:#fff;background:#fff;color:var(--color-cable)}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}.button{display:inline-flex;align-items:center;min-height:44px;border:1px solid var(--color-line);border-radius:var(--radius);padding:0 15px;background:var(--color-panel);color:var(--color-ink);font-family:DM Sans,Noto Sans JP,system-ui,sans-serif;font-weight:800;text-decoration:none}.button--primary{border-color:var(--color-cable);background:var(--color-cable);color:var(--color-panel)}.button:hover{transform:translateY(-1px)}.hero-photo{align-self:center;aspect-ratio:16 / 10;border:1px solid var(--color-line);border-radius:var(--radius);background:var(--color-pale);box-shadow:var(--shadow-soft);margin:0;overflow:hidden}.hero-photo img{display:block;width:100%;height:100%;object-fit:cover;object-position:58% 48%}.section--compact{padding:28px 0 46px}.section-title{margin-top:22px;font-size:clamp(2rem,4vw,3.2rem)}.index-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:30px}.index-card{position:relative;display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:20px;align-items:center;min-height:150px;border:1px solid var(--color-line);border-radius:var(--radius);background:#ffffffdb;box-shadow:0 16px 40px #203f560f;padding:26px;text-decoration:none}.index-card:hover{border-color:var(--color-ice);box-shadow:0 22px 46px #203f561f;transform:translateY(-1px)}.index-card__number{color:var(--color-ice);font-family:DM Sans,system-ui,sans-serif;font-size:clamp(2rem,4vw,3rem);font-weight:800;line-height:1}.index-card__body{display:grid;gap:8px}.index-card__body strong{display:flex;flex-wrap:wrap;gap:8px;align-items:baseline;color:var(--color-ink);font-size:clamp(1.3rem,2.5vw,1.75rem);line-height:1.35}.index-card__body small{color:#8394a2;font-family:DM Sans,system-ui,sans-serif;font-size:.86rem}.index-card__body span{color:var(--color-muted)}.index-card__arrow{color:var(--color-solar);font-size:1.65rem;line-height:1}.popular-panel{display:grid;gap:16px}.popular-panel__label{color:#7d6a58;font-size:1rem}.popular-panel__chips{display:flex;flex-wrap:wrap;gap:10px}.cluster{display:grid;gap:16px}.content-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:20px}.content-card,.term-chip,.related-list a{border:1px solid var(--color-line);border-radius:var(--radius);background:var(--color-panel)}.content-card{display:grid;gap:10px;padding:18px;text-decoration:none}.content-card:hover{border-color:var(--color-ice);box-shadow:0 8px 24px #2b5e731a}.product-spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:20px}.product-spec-card{display:grid;gap:26px;min-width:0;border:1px solid var(--color-line);border-radius:var(--radius);background:#ffffffe0;box-shadow:0 18px 42px #203f560f;padding:24px;text-decoration:none}.product-spec-card:hover{border-color:var(--color-ice);box-shadow:0 22px 46px #203f561f;transform:translateY(-1px)}.product-spec-card__header{display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;align-items:center}.product-spec-card__icon{display:grid;width:56px;height:56px;place-items:center;border-radius:16px;background:var(--color-pale);color:var(--color-cable)}.product-spec-card__icon span{position:relative;display:block;width:27px;height:22px;border:3px solid currentColor;border-radius:3px;background:linear-gradient(currentColor,currentColor) 33% 0 / 2px 100% no-repeat,linear-gradient(currentColor,currentColor) 66% 0 / 2px 100% no-repeat,linear-gradient(currentColor,currentColor) 0 50% / 100% 2px no-repeat}.product-spec-card__icon span:after{position:absolute;left:50%;bottom:-9px;width:18px;height:6px;border-bottom:3px solid currentColor;transform:translate(-50%);content:""}.product-spec-card__title{display:grid;min-width:0;gap:2px}.product-spec-card__title h3{overflow-wrap:anywhere;font-size:clamp(1.2rem,2.1vw,1.65rem)}.product-spec-card__type{color:#8394a2;font-size:.95rem;font-weight:700}.product-spec-list{display:grid;margin:0;padding:0}.product-spec-list div{display:grid;grid-template-columns:minmax(130px,.78fr) minmax(0,1fr);gap:16px;align-items:baseline;border-top:1px solid var(--color-line);padding:15px 0}.product-spec-list div:first-child{padding-top:0}.product-spec-list div:last-child{padding-bottom:0}.product-spec-list dt{color:#8394a2;font-weight:800}.product-spec-list dd{min-width:0;margin:0;color:var(--color-ink);font-family:DM Sans,Noto Sans JP,system-ui,sans-serif;font-size:clamp(1.05rem,1.8vw,1.25rem);font-weight:800;line-height:1.45;overflow-wrap:anywhere}.meta{color:var(--color-muted);font-size:.86rem;font-weight:700}.summary{margin:0;color:var(--color-muted)}.category-block{display:grid;gap:14px;margin-top:30px}.category-block+.category-block{padding-top:26px;border-top:1px solid var(--color-line)}.category-block__header{display:flex;justify-content:space-between;gap:16px;align-items:end}.count{color:var(--color-muted);font-size:.9rem;font-weight:800}.article-header{padding:38px 0 26px}.article-shell{display:grid;grid-template-columns:minmax(0,760px) minmax(240px,1fr);gap:44px;align-items:start;width:min(1120px,calc(100% - 32px));margin:0 auto}.article-body{min-width:0}.article-body h2{margin-top:2.1em;padding-top:.3em;border-top:1px solid var(--color-line);font-size:1.45rem}.article-body p,.article-body ul,.article-body ol{color:var(--color-ink);font-size:1.02rem}.article-body li+li{margin-top:.35em}.side-panel{position:sticky;top:18px;display:grid;gap:18px}.detail-box{border:1px solid var(--color-line);border-radius:var(--radius);background:var(--color-panel);padding:18px}.detail-box--wide{margin-bottom:26px}.detail-box h2,.detail-box h3{margin-bottom:12px;font-size:1rem}.term-list{display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0;list-style:none}.term-chip{display:inline-flex;align-items:center;min-height:34px;padding:4px 10px;color:var(--color-solar);font-weight:800;text-decoration:none}.term-chip--large{min-height:44px;padding:8px 17px;background:var(--color-panel);color:var(--color-muted);font-size:1rem}.related-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}.related-list a{display:grid;gap:4px;padding:12px;text-decoration:none}.alias-list{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0 0;padding:0;list-style:none}.alias-list li{border-radius:var(--radius);background:var(--color-pale);padding:3px 8px;color:var(--color-muted);font-size:.86rem;font-weight:700}.spec-table{width:100%;border-collapse:collapse;font-size:.98rem}.spec-table th,.spec-table td{border-top:1px solid var(--color-line);padding:10px 0;text-align:left;vertical-align:top}.spec-table th{width:38%;color:var(--color-muted);font-weight:800}@media(max-width:860px){.intro-grid,.article-shell,.content-grid,.index-grid,.product-spec-grid,.site-footer__inner{grid-template-columns:1fr}.site-footer__inner{gap:34px}.hero-photo{aspect-ratio:4 / 3}.side-panel{position:static}}@media(max-width:560px){h1{font-size:2.4rem}.site-header{align-items:flex-start;flex-direction:column;padding:16px}.site-nav{width:100%;flex-wrap:wrap;gap:4px}.site-nav a{padding:6px 8px;font-size:.9rem}.category-block__header{align-items:flex-start;flex-direction:column}.home-hero{background:linear-gradient(180deg,#203f56f7,#203f56e6 62%,#203f56b8),url(/images/sbhp.webp);background-position:58% center;background-size:cover}.home-hero__inner{min-height:520px;padding:46px 0}.index-card{grid-template-columns:1fr auto;gap:14px;min-height:0;padding:20px}.index-card__number{grid-column:1 / -1}.footer-nav{grid-template-columns:1fr;gap:28px}.product-spec-card{padding:18px}.product-spec-card__header{grid-template-columns:1fr}.product-spec-list div{grid-template-columns:1fr;gap:4px}}