:root{--blue:#074487;--blue2:#0b5ab8;--navy:#062b61;--deep:#031a3e;--text:#122a49;--muted:#5d708b;--line:#bfd1e6;--soft:#f5f9ff;--green:#31c97c;--sky:#2698ff;--purple:#9253df;--orange:#ff872c;--teal:#21bec4;--rose:#ff5c7d}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;background:#fff;color:var(--text);font-family:"Yu Gothic","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;font-size:17px;line-height:1.75;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img,svg{max-width:100%}.container{width:min(1160px,calc(100% - 36px));margin:auto}.section{padding:58px 0}.section.soft{background:linear-gradient(#fbfdff,#f5f9ff)}.section-head{text-align:center;max-width:850px;margin:0 auto 34px}.section-kicker{margin:0;color:#0b5ab8;font-size:12px;font-weight:900;letter-spacing:.12em;text-transform:uppercase}.section-head h2{margin:4px 0 6px;color:#062b61;font-size:34px;line-height:1.35}.section-head p{margin:0;color:var(--muted)}
.site-header{height:52px;background:linear-gradient(180deg,#0b4f98,#073b79);color:white;position:relative;z-index:30}.header-inner{height:52px;max-width:1160px;margin:auto;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;white-space:nowrap;font-weight:900}.cat-logo{width:30px;height:36px;margin-right:4px}.brand-main{font-size:23px}.brand-sub{font-size:11px;margin-left:5px}.global-nav{margin-left:auto;height:52px;display:flex;align-items:center;gap:3px}.global-nav a{height:52px;padding:0 10px;display:flex;align-items:center;font-size:12px;font-weight:800}.global-nav a:hover{background:rgba(255,255,255,.1)}.contact-nav{height:34px!important;margin-left:5px;border:1px solid rgba(255,255,255,.55);border-radius:4px}.nav-ico{margin-right:4px}.nav-toggle{display:none}
.hero{background:linear-gradient(120deg,#031a3e 0%,#062b61 58%,#074487);color:white}.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center;min-height:475px;padding:42px 0}.hero .eyebrow{margin:0 0 8px;color:#89c6ff;font-size:13px;font-weight:900;letter-spacing:.13em}.hero h1{margin:0;color:white;font-size:48px;line-height:1.25;letter-spacing:-.03em}.hero .lead{margin:12px 0 0;font-size:23px;font-weight:900;color:#b8ddff}.hero .copy{margin:14px 0 0;max-width:650px;font-size:16px;color:#e1efff}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:5px;font-weight:900;font-size:14px;border:1px solid transparent}.btn-primary{background:#0b67d2;color:#fff}.btn-primary:hover{background:#0a5bb9}.btn-light{background:white;color:#073f82}.btn-outline{border-color:#0a5ecf;color:#0752a4;background:white}.hero-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.hero-chip{font-size:12px;font-weight:800;padding:5px 9px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22)}.hero-art img{display:block;width:100%;filter:drop-shadow(0 20px 32px rgba(0,0,0,.25))}
.use-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}.use-card{--accent:#0a5ecf;position:relative;min-height:420px;border:1.5px solid color-mix(in srgb,var(--accent) 62%,white);border-radius:15px;background:linear-gradient(180deg,#fff,color-mix(in srgb,var(--accent) 4%,white));padding:56px 17px 18px;text-align:center;display:flex;flex-direction:column;align-items:center}.use-card:nth-child(1){--accent:var(--green)}.use-card:nth-child(2){--accent:var(--orange)}.use-card:nth-child(3){--accent:var(--purple)}.use-card:nth-child(4){--accent:var(--sky)}.use-card:nth-child(5){--accent:var(--teal)}.use-card:nth-child(6){--accent:var(--rose)}.priority{position:absolute;top:17px;left:18px;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:var(--accent);color:#fff;font-size:20px;font-weight:900;box-shadow:0 7px 16px color-mix(in srgb,var(--accent) 32%,transparent)}.focus-badge{position:absolute;right:12px;top:17px;padding:3px 7px;border-radius:999px;background:#062b61;color:white;font-size:9px;font-weight:900}.use-icon{height:86px;width:86px;color:var(--accent);margin:0 auto 6px;display:grid;place-items:center}.use-icon svg{width:82px;height:82px;fill:none;stroke:currentColor;stroke-width:2.8;stroke-linecap:round;stroke-linejoin:round}.use-card h3{margin:6px 0 10px;color:#082f65;font-size:21px;line-height:1.45;min-height:61px;display:flex;align-items:center;justify-content:center}.use-card p{margin:0;color:#536983;font-size:14px;line-height:1.85}.use-card .fact{margin-top:12px;color:#073f82;font-weight:900}.detail-link{margin-top:auto;padding-top:18px;font-size:14px;color:var(--accent);font-weight:900}.ip-band{margin-top:22px;border:1px solid #9dbce1;border-radius:12px;background:linear-gradient(90deg,#f7fbff,#fff);display:grid;grid-template-columns:78px 1fr auto;align-items:center;gap:18px;padding:21px 24px}.ip-icon{width:62px;height:62px;border-radius:50%;display:grid;place-items:center;color:#0752a4;background:#edf5ff}.ip-icon svg{width:44px;height:44px;fill:none;stroke:currentColor;stroke-width:2.4}.ip-band h3{margin:0 0 2px;color:#073f82;font-size:21px}.ip-band p{margin:0;color:#536983;font-size:15px}
.location-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.location-card{border:1px solid #b9cde6;border-radius:12px;background:#fff;padding:26px;box-shadow:0 8px 22px rgba(8,53,110,.06)}.location-badge{display:inline-block;padding:4px 10px;border-radius:999px;background:#edf5ff;color:#0752a4;font-size:12px;font-weight:900}.location-card h3{font-size:27px;margin:8px 0 4px;color:#073f82}.location-card .sub{font-weight:900;color:#214f87;margin:0 0 8px}.location-card p{color:#536983;margin:0;font-size:16px}.location-list{margin:16px 0 20px;padding:0;list-style:none;display:grid;gap:7px}.location-list li{position:relative;padding-left:23px;font-size:16px;color:#29425f}.location-list li:before{content:'✓';position:absolute;left:0;color:#0a5ecf;font-weight:900}.price-mini{display:flex;flex-wrap:wrap;gap:7px;margin-top:15px}.price-mini span{background:#f1f6fc;border:1px solid #d0deee;border-radius:6px;padding:6px 9px;font-size:13px;font-weight:900;color:#113c70}
.breadcrumb{font-size:12px;color:#5c6f88;background:#f6f9fd;border-bottom:1px solid #e1e9f2;padding:7px 0}.detail-hero h1{font-size:45px}.detail-hero .lead{font-size:21px}.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:28px}.quick{border:1px solid #b7cbe4;border-radius:10px;background:#fff;padding:18px;text-align:center}.quick b{display:block;font-size:20px;color:#073f82}.quick span{display:block;color:#60738c;font-size:13px}.network-layout{display:grid;grid-template-columns:.86fr 1.14fr;gap:28px;align-items:center}.network-copy h3{font-size:27px;margin:0 0 8px;color:#073f82}.network-copy p{color:#536983}.bullet-list{list-style:none;padding:0;margin:15px 0 0;display:grid;gap:8px}.bullet-list li{position:relative;padding-left:26px;color:#2b4665;font-size:15px}.bullet-list li:before{content:'●';position:absolute;left:2px;color:#0a5ecf;font-size:10px}.network-figure{margin:0;padding:18px;border-radius:12px;background:#fff;border:1px solid #d5e1ef}.network-figure img{display:block;width:100%}
.two-pillars{display:grid;grid-template-columns:1fr 1fr;gap:20px}.pillar{border:1px solid #b9cde6;border-radius:12px;padding:26px;background:white}.pillar.primary{border-top:5px solid #28c57a}.pillar.ai{border-top:5px solid #ff872c}.pillar h3{margin:0 0 8px;color:#073f82;font-size:25px}.pillar p{margin:0;color:#536983}.pillar .big{font-size:17px;font-weight:900;color:#113c70;margin-bottom:8px}
.price-groups{display:grid;grid-template-columns:1fr 1fr;gap:22px}.price-group{border:1px solid #b6cae1;border-radius:11px;background:#fff;overflow:hidden}.price-group h3{margin:0;background:#073f82;color:#fff;padding:13px 18px;font-size:20px}.price-row{display:grid;grid-template-columns:1.1fr .85fr 1fr;align-items:center;gap:8px;padding:13px 16px;border-bottom:1px solid #d9e3ef}.price-row:last-child{border-bottom:0}.price-row .name{font-weight:900;color:#173c6c;font-size:14px}.price-row .init{font-size:12px;color:#63768f}.price-row .monthly{text-align:right;color:#073f82;font-size:21px;font-weight:900}.price-row .monthly small{font-size:11px}.price-notes{margin-top:18px;padding:17px 20px;background:#f7faff;border:1px solid #d3dfed;border-radius:9px}.price-notes p{margin:4px 0;color:#405a78;font-size:14px}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.feature-card{border:1px solid #b9cde6;border-radius:10px;background:#fff;padding:22px}.feature-card h3{font-size:19px;margin:0 0 6px;color:#073f82}.feature-card p{margin:0;color:#576d87;font-size:14px}
.kawaguchi-table{width:100%;border-collapse:collapse;background:white;border:1px solid #b9cde6}.kawaguchi-table th,.kawaguchi-table td{padding:14px 12px;border-bottom:1px solid #d8e3ef;text-align:center}.kawaguchi-table thead th{background:#073f82;color:white;font-size:14px}.kawaguchi-table tbody th{text-align:left;color:#073f82}.kawaguchi-table td strong{font-size:21px;color:#073f82}.source-note{margin-top:14px;padding:12px 14px;background:#fff8e8;border:1px solid #f2d69a;border-radius:8px;color:#73552c;font-size:13px}.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.spec-item{border:1px solid #c5d6e8;background:white;border-radius:9px;padding:18px}.spec-item dt{font-weight:900;color:#073f82}.spec-item dd{margin:5px 0 0;color:#536983;font-size:14px}
.cta-section{background:linear-gradient(100deg,#073f82,#0a55a7);color:white;padding:30px 0}.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}.cta-inner h2{margin:0 0 3px;color:white;font-size:27px}.cta-inner p{margin:0;color:#e4effb;font-size:15px}.site-footer{background:linear-gradient(110deg,#063b79,#07488c 60%,#073d79);color:#fff}.footer-main{max-width:1160px;margin:auto;display:grid;grid-template-columns:280px 220px 220px 1fr;padding:18px 0}.footer-main section{padding:0 24px;border-right:1px solid rgba(255,255,255,.45)}.footer-main section:last-child{border-right:0}.footer-main h2{font-size:12px;margin:0 0 7px}.footer-main p,.footer-main a{font-size:10.5px;line-height:1.7;display:block}.footer-legal{background:white;color:#315c91;padding:7px max(calc((100% - 1160px)/2),18px);font-size:9.5px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
@media(max-width:1120px){.header-inner{padding:0 18px}.global-nav{display:none;position:absolute;top:52px;left:12px;right:12px;height:auto;background:#073f82;flex-direction:column;box-shadow:0 12px 30px rgba(0,0,0,.2)}.global-nav.is-open{display:flex}.global-nav a,.contact-nav{height:44px!important;margin:0!important;width:100%;justify-content:flex-start;padding:0 20px!important;border-bottom:1px solid rgba(255,255,255,.12)}.nav-toggle{margin-left:auto;display:block;width:38px;height:34px;border:1px solid rgba(255,255,255,.65);border-radius:4px;background:transparent;padding:6px}.nav-toggle span{display:block;height:2px;background:#fff;margin:5px 2px}.use-grid{grid-template-columns:repeat(3,1fr)}.use-card{min-height:365px}.footer-main{grid-template-columns:repeat(2,1fr);padding:18px}}
@media(max-width:820px){.hero-inner{grid-template-columns:1fr;min-height:0;padding:38px 0}.hero-art{max-width:650px;margin:auto}.location-grid,.price-groups,.network-layout,.two-pillars,.spec-grid{grid-template-columns:1fr}.quick-grid{grid-template-columns:repeat(2,1fr)}.feature-grid{grid-template-columns:1fr}.ip-band{grid-template-columns:68px 1fr}.ip-band .btn{grid-column:1/-1}.cta-inner{flex-direction:column;align-items:flex-start}}
@media(max-width:620px){body{font-size:16px}.section{padding:42px 0}.section-head h2{font-size:28px}.hero h1,.detail-hero h1{font-size:35px}.hero .lead{font-size:19px}.use-grid{grid-template-columns:1fr}.use-card{min-height:0;padding:52px 20px 22px}.use-card h3{min-height:0}.ip-band{grid-template-columns:1fr;text-align:center}.ip-icon{margin:auto}.quick-grid{grid-template-columns:1fr 1fr}.price-row{grid-template-columns:1fr auto}.price-row .monthly{grid-row:1/3;grid-column:2}.price-row .init{grid-column:1}.kawaguchi-table{font-size:13px}.kawaguchi-table th,.kawaguchi-table td{padding:10px 7px}.footer-main{grid-template-columns:1fr}.footer-main section{border:0;border-bottom:1px solid rgba(255,255,255,.22);padding:12px 18px}.footer-legal{display:block;text-align:center}}

/* v10.3: installation visual */
.housing-visual-section{background:#fff}
.housing-visual{display:grid;grid-template-columns:1.35fr .65fr;gap:24px;align-items:stretch}
.housing-photo{position:relative;margin:0;border:1px solid #c6d6e8;border-radius:14px;overflow:hidden;background:#eef5fc;box-shadow:0 10px 28px rgba(8,53,110,.08)}
.housing-photo img{display:block;width:100%;height:100%;min-height:390px;object-fit:cover}
.housing-photo figcaption{position:absolute;right:12px;bottom:10px;padding:4px 9px;border-radius:999px;background:rgba(3,26,62,.78);color:#fff;font-size:11px;font-weight:800}
.housing-options{display:grid;grid-template-rows:1fr 1fr;gap:14px}
.housing-option{border:1px solid #b9cde6;border-radius:12px;background:#f8fbff;padding:22px;display:flex;flex-direction:column;justify-content:center}
.housing-option.accent{border-top:5px solid #ff872c;background:#fffaf5}
.housing-label{display:inline-block;align-self:flex-start;margin-bottom:8px;padding:3px 8px;border-radius:999px;background:#eaf3ff;color:#0752a4;font-size:11px;font-weight:900}
.housing-option.accent .housing-label{background:#fff0e5;color:#ad4e08}
.housing-option h3{margin:0 0 7px;color:#073f82;font-size:23px}
.housing-option p{margin:0;color:#536983;font-size:15px;line-height:1.85}
@media(max-width:820px){.housing-visual{grid-template-columns:1fr}.housing-options{grid-template-columns:1fr 1fr;grid-template-rows:auto}.housing-photo img{min-height:0}}
@media(max-width:620px){.housing-options{grid-template-columns:1fr}.housing-photo figcaption{font-size:10px}.housing-option{padding:18px}}

/* v10.4 Sayama pricing: space + power, customer-friendly matrix */
.pricing-build{display:grid;grid-template-columns:1.05fr .95fr;gap:22px;margin-top:22px}.pricing-panel{background:#fff;border:1px solid #b6cae1;border-radius:12px;padding:20px;box-shadow:0 8px 22px rgba(8,53,110,.05)}.pricing-panel h3{margin:4px 0 14px;color:#073f82;font-size:22px}.pricing-step{display:inline-block;border-radius:999px;background:#edf5ff;color:#0752a4;padding:4px 10px;font-size:12px;font-weight:900}.pricing-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}.pricing-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid #c5d6e8;min-width:560px}.pricing-table th,.pricing-table td{padding:12px 11px;border-bottom:1px solid #d8e3ef;text-align:center;font-size:14px}.pricing-table thead th{background:#073f82;color:#fff;font-size:13px}.pricing-table tbody th{text-align:left;color:#073f82;background:#f7faff;white-space:nowrap}.pricing-table td strong{color:#073f82;font-size:17px}.pricing-caption{margin:10px 0 0;color:#596f89;font-size:13px}.price-formula{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;margin:22px 0;padding:16px 18px;border-radius:10px;background:#073f82;color:#fff}.price-formula span{font-weight:800;opacity:.82}.price-formula strong{font-size:21px}.price-example-head{margin:28px 0 12px}.price-example-head h3{margin:0;color:#073f82;font-size:24px}.price-example-head p{margin:5px 0 0;color:#596f89}.price-matrix{min-width:720px}.price-matrix td{font-weight:900;color:#073f82;font-size:16px}.price-matrix .not-applicable{color:#9aa9b8;font-weight:600}.power-table{min-width:430px}
@media(max-width:820px){.pricing-build{grid-template-columns:1fr}.price-formula{justify-content:flex-start}}
@media(max-width:620px){.pricing-panel{padding:15px}.pricing-table th,.pricing-table td{padding:10px 8px;font-size:13px}.pricing-table td strong{font-size:15px}.price-formula strong{font-size:18px}}

/* v10.6: IDC総合 多回線・収容写真・川口19inch rack */
.hero-photo{overflow:hidden;border-radius:14px;background:#eef5fc;box-shadow:0 18px 38px rgba(0,0,0,.22)}
.hero-photo img{display:block;width:100%;height:355px;object-fit:cover;filter:none}
.multiline-feature{background:#f7fbff;padding-top:44px;padding-bottom:52px}
.multiline-feature-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:34px;align-items:center;border:1px solid #c9dced;border-radius:16px;background:linear-gradient(135deg,#fff,#eef6ff);padding:28px 32px;box-shadow:0 10px 28px rgba(8,53,110,.06)}
.multiline-feature-figure{margin:0;display:flex;align-items:center;justify-content:center}
.multiline-feature-figure img{display:block;width:100%;height:auto;max-height:355px;object-fit:contain}
.multiline-feature-copy h2{margin:4px 0 12px;color:#062b61;font-size:31px;line-height:1.35}
.multiline-feature-copy p{margin:0 0 10px;color:#536983;font-size:16px}
.multiline-feature-copy .btn{margin-top:10px}
.housing-site-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.housing-site-card{overflow:hidden;border:1px solid #bfd0e3;border-radius:14px;background:#fff;box-shadow:0 10px 26px rgba(8,53,110,.07)}
.housing-site-card.sayama{border-top:4px solid #2a9a56}
.housing-site-card.kawaguchi{border-top:4px solid #0a5ecf}
.housing-site-card figure{margin:0;background:#eef5fc;aspect-ratio:16/7;overflow:hidden}
.housing-site-card figure img{display:block;width:100%;height:100%;object-fit:cover}
.housing-site-body{padding:20px 22px 22px}
.housing-site-body h3{margin:7px 0 8px;color:#073f82;font-size:23px;line-height:1.4}
.housing-site-body p{margin:0;color:#536983;font-size:15px}
.housing-site-body .detail-link{display:inline-block;padding-top:12px}
@media(max-width:820px){.hero-photo img{height:auto;max-height:none}.multiline-feature-grid{grid-template-columns:1fr;padding:22px}.multiline-feature-copy{order:1}.multiline-feature-figure{order:2}.housing-site-grid{grid-template-columns:1fr}}
@media(max-width:620px){.multiline-feature{padding-top:34px;padding-bottom:40px}.multiline-feature-grid{padding:17px}.multiline-feature-copy h2{font-size:27px}.housing-site-card figure{aspect-ratio:16/9}}

/* v10.14: private network / local AI */
.private-ai-section{background:linear-gradient(180deg,#f7fbff,#eef6ff)}
.private-ai-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:start}
.private-ai-flow{display:flex;align-items:center;justify-content:center;gap:10px;border:1px solid #b9cde6;border-radius:14px;background:#fff;padding:28px 18px;box-shadow:0 10px 28px rgba(8,53,110,.06);min-height:210px}
.flow-node{min-width:122px;border:1px solid #b7cbe2;border-radius:12px;background:#f8fbff;padding:16px 12px;text-align:center}
.flow-node span{display:block;color:#617690;font-size:11px;font-weight:900;letter-spacing:.07em;text-transform:uppercase}
.flow-node strong{display:block;margin-top:4px;color:#073f82;font-size:16px;line-height:1.45}
.flow-node.network{background:#eef7ff;border-color:#8ab8e8}.flow-node.cats{background:#e9f3ff;border-color:#6ca5de}.flow-node.ai{background:#eef9f2;border-color:#88c79e}.flow-node.ai strong{color:#17643a}
.flow-arrow{color:#0a5ecf;font-size:25px;font-weight:900;line-height:1}
.private-ai-copy{border:1px solid #b9cde6;border-radius:14px;background:#fff;padding:25px 26px;box-shadow:0 10px 28px rgba(8,53,110,.06)}
.private-ai-copy h3{margin:0 0 8px;color:#073f82;font-size:23px;line-height:1.45}.private-ai-copy>p{margin:0 0 13px;color:#536983}
.private-ai-copy .bullet-list{margin:15px 0 20px}
.private-ai-links{border-top:1px solid #d7e3ef;padding-top:16px}.private-ai-links p{margin:0 0 10px;color:#405a78;font-size:14px}
.reference-links{display:flex;flex-wrap:wrap;gap:9px}.reference-links a{display:inline-block;border:1px solid #89add4;border-radius:7px;background:#f5f9ff;padding:8px 11px;color:#0752a4;font-size:13px;font-weight:900}.reference-links a:hover{text-decoration:underline}
.private-ai-note{margin-top:11px!important;color:#687b91!important;font-size:12px!important;line-height:1.65}
@media(max-width:980px){.private-ai-grid{grid-template-columns:1fr}.private-ai-flow{min-height:0}}
@media(max-width:720px){.private-ai-flow{flex-direction:column;padding:22px 16px}.flow-node{width:100%;max-width:360px}.flow-arrow{transform:rotate(90deg)}.private-ai-copy{padding:21px 19px}.reference-links{flex-direction:column}.reference-links a{width:100%;text-align:center}}


/* v10.17: SINCE 1997 trust bar visibility update
   CF-SX3 / Windows 10実機での視認性を基準に、トップの「主なサービス」級へ拡大。 */
.since-1997-bar{background:#073f82;border-bottom:1px solid #0b5aa8;color:#fff}
.since-1997-inner{max-width:1160px;min-height:50px;margin:0 auto;padding:9px 18px;display:flex;align-items:center;justify-content:center;gap:14px;font-size:18px;line-height:1.45;letter-spacing:.01em;font-weight:700}
.since-1997-inner strong{color:#75dcff;font-size:20px;letter-spacing:.10em;white-space:nowrap;font-weight:900}
@media(max-width:620px){.since-1997-inner{min-height:58px;padding:8px 14px;gap:3px;flex-direction:column;font-size:16px;text-align:center}.since-1997-inner strong{font-size:18px}}


/* v10.15: mobile pricing overflow containment
   Grid items may otherwise keep the table min-content width and enlarge the whole page.
   Tables remain horizontally scrollable inside their own wrapper. */
.pricing-build>*{min-width:0}
.pricing-panel{min-width:0;max-width:100%}
.pricing-table-wrap{max-width:100%}