:root{--navy:#172b4d;--ink:#1b2940;--muted:#68788f;--line:#dfe7f1;--blue:#2f72c8;--blue-dark:#1f579f;--pale:#f2f7fd;--pale-strong:#e9f2fc;--max:1240px}
*{box-sizing:border-box}html{min-width:320px;scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#fff;font-family:-apple-system,BlinkMacSystemFont,"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}a{color:inherit}a:focus-visible,input:focus-visible{outline:3px solid #2c7acb;outline-offset:4px}.page-shell{max-width:var(--max);margin:0 auto;padding:0 30px}.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}
.site-header{border-bottom:1px solid var(--line);background:#fff}.site-header__inner{max-width:var(--max);min-height:76px;margin:0 auto;padding:14px 30px;display:flex;align-items:center;gap:30px}.site-header__brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;flex:none}.brand-mark{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:#fff;background:var(--blue);font:800 24px Arial,sans-serif}.site-header__copy{display:grid;line-height:1.18}.site-header__name{color:var(--navy);font-size:23px;font-weight:800;letter-spacing:-.045em}.site-header__tagline{margin-top:4px;color:var(--muted);font-size:10px}.site-nav{display:flex;align-items:center;gap:27px;margin-left:auto}.site-nav a{font-size:13px;font-weight:700;text-decoration:none;white-space:nowrap}.site-nav a:hover{color:var(--blue)}.header-search{width:35px;height:35px;display:grid;place-items:center;border:1px solid #cbd8e7;border-radius:50%;color:var(--blue-dark);text-decoration:none}.header-search:hover{background:var(--pale)}.header-search svg,.search-icon{width:17px;height:17px;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:1.8}
.hero{overflow:hidden;background:linear-gradient(180deg,#fff 0%,#f8fbff 100%);border-bottom:1px solid #e8eff7}.hero__inner{min-height:560px;padding-top:76px;padding-bottom:74px;display:grid;grid-template-columns:minmax(0,1.02fr) minmax(380px,.98fr);align-items:center;gap:72px}.hero__copy{min-width:0}.eyebrow{margin:0 0 14px;color:var(--blue-dark);font-size:10px;font-weight:800;letter-spacing:.14em;line-height:1.4}.hero h1{max-width:620px;margin:0;color:var(--navy);font-size:clamp(38px,4.5vw,61px);font-weight:800;letter-spacing:-.065em;line-height:1.28}.hero h1 span{color:var(--blue)}.hero__lead{margin:24px 0 0;color:#4f637a;font-size:16px;line-height:2}.discovery-box{max-width:650px;height:62px;margin-top:31px;padding:7px 7px 7px 16px;display:flex;align-items:center;gap:10px;border:1px solid #c4d4e6;border-radius:11px;background:#fff;box-shadow:0 9px 25px rgba(38,78,124,.09)}.discovery-box input{min-width:0;flex:1;height:45px;padding:0;border:0;color:var(--ink);font:inherit;font-size:14px;outline:0}.discovery-box input::placeholder{color:#8796a9}.search-icon{flex:none;color:var(--blue)}.button{min-width:78px;height:46px;display:inline-flex;align-items:center;justify-content:center;border-radius:7px;text-decoration:none;font-size:14px;font-weight:700;white-space:nowrap}.button--primary{background:var(--blue);color:#fff}.button--primary:hover{background:var(--blue-dark)}.search-help{margin:8px 0 0;color:var(--muted);font-size:12px}.quick-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}.quick-links a{padding:6px 12px;border:1px solid #cbdbea;border-radius:999px;background:#fff;color:var(--blue-dark);font-size:12px;text-decoration:none}.quick-links a:hover{border-color:var(--blue);background:var(--pale)}.hero__visual{position:relative;min-height:390px}.hero-image-frame{height:360px;overflow:hidden;border-radius:20px;background:#dce8f4;box-shadow:0 22px 45px rgba(38,76,119,.15);transform:rotate(1.5deg)}.hero-image-frame img{width:100%;height:100%;display:block;object-fit:cover;object-position:center}.trust-card{position:absolute;right:-22px;bottom:13px;min-width:218px;padding:16px 18px;display:flex;align-items:flex-start;gap:12px;border:1px solid #d7e3ef;border-radius:12px;background:#fff;box-shadow:0 12px 28px rgba(41,78,118,.13)}.trust-card__mark{width:27px;height:27px;display:grid;place-items:center;border-radius:50%;background:#e5f0fc;color:var(--blue);font-weight:800}.trust-card strong,.trust-card span{display:block}.trust-card strong{color:var(--navy);font-size:13px}.trust-card div>span{margin-top:3px;color:var(--muted);font-size:11px;line-height:1.55}
.section{padding:88px 0 0}.section--pale{margin-left:calc((var(--max) - 100vw)/2);margin-right:calc((var(--max) - 100vw)/2);padding-left:max(30px,calc((100vw - var(--max))/2 + 30px));padding-right:max(30px,calc((100vw - var(--max))/2 + 30px));padding-bottom:88px;background:var(--pale)}.section-heading{margin-bottom:29px}.section-heading h2,.about-section h2,.promise h2{margin:0;color:var(--navy);font-size:29px;letter-spacing:-.045em;line-height:1.35}.section-heading>p:last-child{margin:9px 0 0;color:var(--muted);font-size:14px}.symptom-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:13px}.symptom-card{min-height:191px;padding:21px 17px 18px;border:1px solid #e0e8f1;border-radius:13px;background:#fff;text-decoration:none;display:flex;flex-direction:column;align-items:flex-start;box-shadow:0 5px 15px rgba(42,78,119,.055);transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}.symptom-card:hover{transform:translateY(-2px);border-color:#a5c4e7;box-shadow:0 10px 22px rgba(42,78,119,.11)}.symptom-card svg,.category-card svg,.promise li svg{width:35px;height:35px;padding:7px;border-radius:10px;background:#e8f2fc;color:var(--blue);fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:1.7}.symptom-card strong{margin-top:16px;color:var(--navy);font-size:16px;line-height:1.4}.symptom-card>span{margin-top:7px;color:var(--muted);font-size:11px;line-height:1.6}.article-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.article-card{min-height:166px;padding:21px 21px 19px;border:1px solid var(--line);border-radius:13px;background:#fff;text-decoration:none;display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 5px 14px rgba(35,67,103,.04);transition:border-color .16s ease,box-shadow .16s ease,transform .16s ease}.article-card:hover{transform:translateY(-2px);border-color:#a5c4e7;box-shadow:0 10px 22px rgba(35,67,103,.09)}.article-card__category{color:var(--blue-dark);font-size:12px;font-weight:800}.article-card strong{color:var(--navy);font-size:15px;line-height:1.7}.category-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:13px}.category-card{min-height:174px;padding:21px 19px;border:1px solid var(--line);border-radius:13px;background:#fff;text-decoration:none;display:flex;flex-direction:column;box-shadow:0 5px 14px rgba(35,67,103,.04);transition:border-color .16s ease,background .16s ease}.category-card:hover{border-color:#a5c4e7;background:#fafdff}.category-card svg{margin-bottom:18px}.category-card strong{color:var(--navy);font-size:16px}.category-card span{margin-top:8px;color:var(--muted);font-size:12px;line-height:1.6}.category-card b{margin-top:auto;align-self:flex-end;color:var(--blue);font-size:19px;font-weight:400}.promise{margin-top:88px;padding:46px 50px;display:grid;grid-template-columns:minmax(260px,.85fr) 1.15fr;gap:60px;border:1px solid #dce9f5;border-radius:16px;background:var(--pale-strong)}.promise h2{font-size:28px}.promise__intro>p:not(.eyebrow){max-width:420px;margin:16px 0 0;color:#52677f;font-size:15px;line-height:1.9}.promise ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:25px 22px;align-content:center}.promise li{display:flex;align-items:flex-start;gap:11px;color:var(--navy);font-size:14px;font-weight:700;line-height:1.55}.promise li svg{flex:none;width:30px;height:30px;padding:6px;background:#fff}.about-section{max-width:760px;margin:0 auto;padding:88px 0 94px}.about-section h2{margin-bottom:20px}.about-section p:not(.eyebrow){margin:0 0 8px;color:#52677f;font-size:16px;line-height:2}.site-footer{border-top:1px solid var(--line);background:#fff}.site-footer__inner{max-width:var(--max);margin:0 auto;padding:30px;display:flex;align-items:center;gap:25px;color:var(--muted);font-size:12px}.site-footer__footer-brand{display:grid;gap:2px}.site-footer__footer-brand a{color:var(--navy);font-size:18px;font-weight:800;letter-spacing:-.04em;text-decoration:none}.site-footer__footer-brand span{font-size:10px}.site-footer__links{display:flex;gap:21px;margin-left:auto}.site-footer__links a{color:var(--blue-dark);text-decoration:none}.site-footer__links a:hover{text-decoration:underline}
@media(max-width:1080px){.site-header__inner{padding-left:24px;padding-right:24px}.page-shell{padding-left:24px;padding-right:24px}.site-nav{gap:17px}.hero__inner{gap:45px}.symptom-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.section--pale{padding-left:max(24px,calc((100vw - var(--max))/2 + 24px));padding-right:max(24px,calc((100vw - var(--max))/2 + 24px))}.category-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:780px){.site-header__inner{min-height:72px;flex-wrap:wrap;gap:0}.site-nav{order:3;width:100%;margin:12px 0 0;padding-top:10px;border-top:1px solid var(--line);justify-content:space-between;gap:9px;overflow-x:auto}.site-nav a{font-size:12px}.header-search{margin-left:auto}.hero__inner{min-height:0;padding-top:58px;padding-bottom:58px;grid-template-columns:1fr;gap:42px}.hero h1{font-size:44px}.hero__visual{min-height:310px;max-width:620px;width:100%;margin:0 auto}.hero-image-frame{height:290px}.trust-card{right:8px;bottom:0}.section{padding-top:65px}.section--pale{margin-left:-24px;margin-right:-24px;padding-left:24px;padding-right:24px;padding-bottom:65px}.promise{margin-top:65px;padding:38px 30px;grid-template-columns:1fr;gap:30px}.about-section{padding-top:67px;padding-bottom:75px}}
@media(max-width:560px){.page-shell{padding-left:18px;padding-right:18px}.site-header__inner{padding:13px 18px}.site-header__tagline{display:none}.site-header__name{font-size:22px}.site-nav{justify-content:flex-start;gap:19px}.hero__inner{padding-top:45px;padding-bottom:45px}.hero h1{font-size:34px;letter-spacing:-.065em}.hero h1 br{display:none}.hero__lead{font-size:14px;line-height:1.9}.hero__lead .desktop-only{display:none}.discovery-box{height:auto;min-height:61px;padding:7px 7px 7px 14px;flex-wrap:wrap;gap:5px}.discovery-box input{height:43px;flex:1 1 calc(100% - 30px)}.button{width:100%;height:44px}.search-help{font-size:11px}.quick-links{margin-top:20px}.quick-links a{font-size:11px;padding:5px 10px}.hero__visual{min-height:255px}.hero-image-frame{height:235px;border-radius:15px}.trust-card{right:2px;bottom:-2px;min-width:190px;padding:12px 13px}.trust-card__mark{width:23px;height:23px}.trust-card strong{font-size:12px}.trust-card div>span{font-size:10px}.section-heading h2,.about-section h2,.promise h2{font-size:24px}.section-heading>p:last-child{font-size:13px}.section--pale{margin-left:-18px;margin-right:-18px;padding-left:18px;padding-right:18px}.symptom-grid,.article-grid,.category-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.symptom-card{min-height:158px;padding:16px 13px}.symptom-card svg{width:31px;height:31px}.symptom-card strong{margin-top:11px;font-size:14px}.symptom-card>span{font-size:10px}.article-card{min-height:145px;padding:17px}.article-card strong{font-size:13px;line-height:1.6}.category-card{min-height:145px;padding:16px 13px}.category-card svg{width:31px;height:31px;margin-bottom:12px}.category-card strong{font-size:13px}.category-card span{font-size:10px}.category-card b{font-size:17px}.promise{padding:30px 20px}.promise ul{grid-template-columns:1fr;gap:14px}.promise li{font-size:13px}.about-section p:not(.eyebrow){font-size:14px;line-height:1.9}.site-footer__inner{padding:25px 18px;display:block}.site-footer__links{margin:18px 0 0;display:flex;flex-wrap:wrap;gap:10px 17px}.site-footer__links a{font-size:12px}}
@media(max-width:360px){.symptom-grid,.article-grid,.category-grid{grid-template-columns:1fr}.site-nav{gap:14px}.site-nav a{font-size:11px}}
.section--pale{margin-left:calc((var(--max) - 100vw)/2 - 30px);margin-right:calc((var(--max) - 100vw)/2 - 30px)}
@media(max-width:1080px){.section--pale{margin-left:calc((var(--max) - 100vw)/2 - 24px);margin-right:calc((var(--max) - 100vw)/2 - 24px)}}
@media(max-width:780px){.section--pale{margin-left:-24px;margin-right:-24px}}
@media(max-width:560px){.section--pale{margin-left:-18px;margin-right:-18px}}
.category-grid{grid-template-columns:repeat(6,minmax(0,1fr))}.guide-page{padding:45px 0 92px}.guide-breadcrumb{display:flex;gap:10px;align-items:center;margin:0 0 40px;color:var(--muted);font-size:13px}.guide-breadcrumb a{color:var(--blue-dark);text-decoration:none}.guide-breadcrumb span{color:#a9b8c9}.guide-page h1{max-width:780px;margin:0;color:var(--navy);font-size:clamp(32px,4vw,48px);letter-spacing:-.055em;line-height:1.3}.guide-intro{max-width:700px;margin:18px 0 40px;color:#52677f;font-size:16px;line-height:1.9}.guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.guide-article-card{min-height:142px;padding:20px;border:1px solid var(--line);border-radius:13px;background:#fff;text-decoration:none;display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 5px 14px rgba(35,67,103,.04);transition:border-color .16s ease,box-shadow .16s ease,transform .16s ease}.guide-article-card:hover{transform:translateY(-2px);border-color:#a5c4e7;box-shadow:0 10px 22px rgba(35,67,103,.09)}.guide-article-card span{color:var(--blue-dark);font-size:12px;font-weight:800}.guide-article-card strong{color:var(--navy);font-size:15px;line-height:1.7}.guide-page+.site-footer{margin-top:0}
@media(max-width:1080px){.category-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:780px){.guide-page{padding:32px 0 70px}.guide-breadcrumb{margin-bottom:30px}.guide-intro{font-size:14px;margin-bottom:28px}.guide-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}}
@media(max-width:560px){.guide-grid{grid-template-columns:1fr}.guide-article-card{min-height:112px;padding:17px}.guide-article-card strong{font-size:14px}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.search-results{max-width:650px;margin-top:10px;padding:14px 16px;border:1px solid #d6e2ef;border-radius:10px;background:#fff;box-shadow:0 9px 20px rgba(38,78,124,.08);color:var(--navy);font-size:13px}.search-results p{margin:0 0 8px;color:var(--muted);font-size:12px;font-weight:700}.search-results ul{list-style:none;margin:0;padding:0;display:grid;gap:5px}.search-results a{color:var(--blue-dark);text-decoration:none}.search-results a:hover{text-decoration:underline}.search-results li{padding:4px 0}
.discovery-box button{border:0;cursor:pointer;font-family:inherit}
.category-grid{grid-template-columns:repeat(5,minmax(0,1fr))}
.article-card{min-height:0;padding:0 0 18px;overflow:hidden;justify-content:flex-start}.article-card__visual{height:104px;flex:none;display:grid;place-items:center;margin-bottom:17px;border-radius:12px 12px 8px 8px;background:#edf5fd;color:var(--blue);overflow:hidden}.article-card__visual svg{width:52px;height:52px;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:1.35}.article-card__visual--office{background:#f0f5fd;color:#3f72b4}.article-card__visual--storage{background:#f1f5fb;color:#59769b}.article-card__visual--network{background:#eaf5fb;color:#2d86a6}.article-card__visual--peripheral{background:#eef6f4;color:#3b8b87}.article-card__visual--usb{background:#edf3fc;color:#4b72b5}.article-card__category{padding:0 21px}.article-card>strong{display:block;padding:8px 21px 0}.symptom-card svg{width:40px;height:40px;padding:8px}.category-card svg{width:42px;height:42px;padding:8px;margin-bottom:18px}.promise li svg{width:32px;height:32px;padding:6px}
@media(max-width:560px){.article-card{padding-bottom:15px}.article-card__visual{height:78px;margin-bottom:12px;border-radius:10px 10px 6px 6px}.article-card__visual svg{width:42px;height:42px}.article-card__category{padding:0 17px}.article-card>strong{padding:6px 17px 0}.symptom-card svg{width:36px;height:36px}.category-card svg{width:36px;height:36px;margin-bottom:12px}}