:root{
  --navy:#0f2440;--navy2:#0a1a30;--blue:#2f93f0;--blue2:#7cc4ff;--blueSoft:#eaf3fe;
  --ink:#15233a;--muted:#5d6b7e;--line:#e7edf4;--soft:#f5f8fc;--white:#fff;--rose:#e2536b;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,"Helvetica Neue","Hiragino Sans","Yu Gothic",sans-serif;color:var(--ink);background:var(--white);line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.ey{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--blue);text-transform:uppercase}
h2.s{font-size:clamp(26px,4vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.3;margin-top:10px}
.lead{color:var(--muted);font-size:16px;margin-top:14px}
.center{text-align:center}
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:11px;font-weight:700;font-size:15px;padding:14px 24px;transition:.2s;cursor:pointer;border:1px solid transparent}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 22px rgba(47,147,240,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(47,147,240,.36)}
.btn-ghost{background:#fff;color:var(--navy);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
.ico{width:24px;height:24px;stroke:var(--blue);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:19px;letter-spacing:-.01em;color:var(--navy)}
.brand .mk{width:26px;height:26px;border-radius:7px;background:linear-gradient(135deg,var(--blue),var(--navy));display:inline-block;position:relative}
.brand .mk::after{content:"";position:absolute;inset:7px;border:2px solid #fff;border-radius:3px;transform:rotate(45deg)}
.bcrumb{display:none;font-size:13px;color:var(--muted)}
.nav .cta{display:none}
@media(min-width:900px){.bcrumb{display:block}.nav .cta{display:inline-flex}}

.hero{position:relative;overflow:hidden;background:radial-gradient(60% 50% at 85% 0%, var(--blueSoft), transparent 70%),linear-gradient(180deg,#fbfdff,#fff)}
.hero .grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center;padding:54px 0 64px}
.tag{display:inline-block;background:var(--blueSoft);color:var(--blue);font-weight:700;font-size:12px;padding:6px 14px;border-radius:999px}
.hero h1{font-size:clamp(30px,5.6vw,52px);font-weight:800;letter-spacing:-.03em;line-height:1.22;color:var(--navy);margin-top:14px}
.hero h1 .accent{color:var(--blue)}
.hero p.sub{color:var(--muted);font-size:17px;margin-top:18px;max-width:520px}
.hero .cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.herovis{position:relative}
.herovis img{width:100%;border-radius:16px;display:block;box-shadow:0 24px 60px rgba(15,36,64,.14)}
.chip{position:absolute;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:12px;box-shadow:0 14px 34px rgba(15,36,64,.12);padding:11px 15px;display:flex;align-items:center;gap:9px}
.chip b{font-size:18px;font-weight:800;color:var(--navy)}.chip span{font-size:11px;color:var(--muted)}
.chip .dot{width:32px;height:32px;border-radius:9px;background:var(--blueSoft);display:flex;align-items:center;justify-content:center}
.chip.a{top:14px;left:-10px}.chip.b{bottom:16px;right:-8px}
@media(min-width:900px){.hero .grid{grid-template-columns:1.05fr .95fr;gap:48px;padding:80px 0 92px}}

section.blk{padding:74px 0}
section.soft{background:var(--soft)}
@media(min-width:900px){section.blk{padding:90px 0}}

.essence{background:var(--navy);color:#fff;text-align:center;padding:66px 0}
.essence h2{font-size:clamp(24px,4.2vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.35}
.essence h2 em{font-style:normal;color:var(--blue2)}
.essence p{color:#a9bedb;margin-top:16px;font-size:16px}

.cards{display:grid;grid-template-columns:1fr;gap:20px;margin-top:40px}
@media(min-width:680px){.cards{grid-template-columns:1fr 1fr}}
@media(min-width:980px){.cards.c3{grid-template-columns:repeat(3,1fr)}.cards.c4{grid-template-columns:repeat(4,1fr)}}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;transition:.2s}
.card:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(15,36,64,.08);border-color:#d8e6f5}
.card .ic-wrap{width:46px;height:46px;border-radius:12px;background:var(--blueSoft);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.card .chk{width:26px;height:26px;border-radius:50%;background:#fdeef0;display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.card .chk svg{width:15px;height:15px;stroke:var(--rose);fill:none;stroke-width:2.2;stroke-linecap:round}
.card h3{font-size:16px;font-weight:800;color:var(--navy)}
.card p{color:var(--muted);font-size:13.5px;margin-top:7px}

/* effect: big numbers + dashboard */
.effect{display:grid;grid-template-columns:1fr;gap:36px;align-items:center;margin-top:44px}
.stat3{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:520px){.stat3{grid-template-columns:repeat(3,1fr)}}
.stat{text-align:center;background:linear-gradient(180deg,#fff,#f3f8ff);border:1px solid var(--line);border-radius:18px;padding:28px 14px}
.stat .num{font-size:clamp(40px,6.5vw,58px);font-weight:800;letter-spacing:-.03em;line-height:1;background:linear-gradient(120deg,var(--blue),var(--navy));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .lab{font-weight:700;color:var(--navy);margin-top:10px;font-size:14px}
.stat .sub{font-size:12px;color:var(--muted);margin-top:3px}
.effect-vis img{width:100%;border-radius:16px;display:block;box-shadow:0 20px 50px rgba(15,36,64,.14);border:1px solid var(--line)}
@media(min-width:900px){.effect{grid-template-columns:.95fr 1.05fr;gap:48px}}

/* steps */
.steps{display:grid;grid-template-columns:1fr;gap:16px;margin-top:40px}
@media(min-width:900px){.steps{grid-template-columns:repeat(5,1fr)}}
.step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 18px}
.step .n{font-size:12px;font-weight:800;color:var(--blue);letter-spacing:.1em}
.step h4{font-size:15px;font-weight:800;color:var(--navy);margin-top:6px}
.step p{font-size:13px;color:var(--muted);margin-top:6px}

/* tools */
.tools{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:34px}
.tool{display:inline-flex;align-items:center;gap:9px;border:1px solid var(--line);background:#fff;border-radius:12px;padding:12px 20px;font-weight:700;color:var(--navy);font-size:15px;box-shadow:0 4px 14px rgba(15,36,64,.04)}
.tool .d{width:24px;height:24px;border-radius:7px;background:linear-gradient(135deg,var(--blue),var(--navy))}

/* cases */
.case{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:.2s}
.case:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(15,36,64,.1)}
.case .th{aspect-ratio:16/10;overflow:hidden;background:var(--soft)}
.case .th img{width:100%;height:100%;object-fit:cover;display:block}
.case .b{padding:18px 20px}
.case .cat{font-size:11px;font-weight:800;color:var(--blue);letter-spacing:.08em}
.case h3{font-size:16px;font-weight:800;color:var(--navy);margin-top:5px}
.case .res{font-size:13px;font-weight:800;color:var(--navy);margin-top:8px}
.case .res em{font-style:normal;color:var(--blue)}
.case p{font-size:13px;color:var(--muted);margin-top:6px}

.final{background:radial-gradient(70% 130% at 50% 0%, #16335c, var(--navy2));color:#fff;text-align:center;padding:78px 0}
.final h2{font-size:clamp(26px,4.4vw,42px);font-weight:800;letter-spacing:-.02em}
.final p{color:#a9bedb;margin-top:14px}
.final .cta-row{display:flex;gap:14px;justify-content:center;margin-top:30px;flex-wrap:wrap}
.final .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.final .btn-ghost:hover{border-color:#fff;color:#fff}

footer.site{background:var(--navy2);padding:40px 0;color:#9fb1c9;font-size:13px}
footer.site .brand{color:#fff}
.foot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}

.modal{position:fixed;inset:0;z-index:80;display:none;align-items:center;justify-content:center;background:rgba(10,20,40,.55);padding:24px}
.modal.open{display:flex}
.modal-card{background:#fff;border-radius:18px;max-width:420px;width:100%;padding:32px;text-align:center;box-shadow:0 30px 70px rgba(0,0,0,.3)}
.modal-card h3{font-size:22px;font-weight:800;color:var(--navy)}
.modal-card p{color:var(--muted);font-size:14px;margin-top:12px}
.modal-card .x{margin-top:22px;display:inline-block;background:var(--blue);color:#fff;padding:13px 28px;border-radius:11px;font-weight:700;cursor:pointer}

/* ==== unified site nav/footer ==== */
.menu{display:none;gap:24px;font-size:14px;color:var(--muted);font-weight:600;align-items:center}
.menu>a{color:var(--muted)}.menu>a:hover{color:var(--navy)}
.hasdrop{position:relative}
.hasdrop>span{cursor:pointer;color:var(--muted);font-weight:600;display:inline-flex;align-items:center;gap:5px}
.hasdrop:hover>span{color:var(--navy)}
.drop{position:absolute;top:100%;left:50%;transform:translateX(-50%);margin-top:6px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 16px 40px rgba(15,36,64,.13);padding:8px;min-width:240px;display:none;flex-direction:column;gap:2px;z-index:60}
.drop a{padding:11px 14px;border-radius:8px;font-size:13.5px;color:var(--ink);white-space:nowrap;font-weight:600}
.drop a:hover{background:var(--soft);color:var(--blue)}
.hasdrop:hover .drop{display:flex}
.nav .cta{display:none}
.fnav{display:flex;flex-wrap:wrap;gap:8px 16px}
.fnav a{color:#9fb1c9}.fnav a:hover{color:#fff}
@media(min-width:980px){.menu{display:flex}.nav .cta{display:inline-flex}}
.faqwrap{max-width:820px;margin:36px auto 0}
details.faq{border:1px solid var(--line);border-radius:12px;background:#fff;margin-top:10px;overflow:hidden}
details.faq summary{list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;color:var(--navy);font-size:15px;display:flex;justify-content:space-between;gap:14px;align-items:center}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";color:var(--blue);font-weight:800;font-size:20px;flex:none}
details.faq[open] summary::after{content:"\2212"}
details.faq[open] summary{border-bottom:1px solid var(--line)}
details.faq .a{padding:14px 20px 18px;color:var(--muted);font-size:14px}
.pricebox{max-width:820px;margin:36px auto 0;background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px}
.pricebox h3{font-size:17px;font-weight:800;color:var(--navy)}
.pricebox p{color:var(--muted);font-size:14.5px;margin-top:8px}
.pricebox ul{margin:14px 0 0 1.2em;color:var(--muted);font-size:14.5px}


/* ===== お役立ち情報 記事ページ ===== */
.art-hero{background:radial-gradient(60% 50% at 85% 0%, var(--blueSoft), transparent 70%),linear-gradient(180deg,#fbfdff,#fff);border-bottom:1px solid var(--line)}
.art-hero .wrap{padding:40px 24px 44px}
.crumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.crumb a:hover{color:var(--blue)}
.cat-badge{display:inline-block;font-size:12px;font-weight:700;padding:5px 13px;border-radius:999px;background:var(--blueSoft);color:var(--blue)}
.art-hero h1{font-size:clamp(25px,4.4vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.32;color:var(--navy);margin-top:16px;max-width:880px}
.art-meta{display:flex;flex-wrap:wrap;gap:16px;margin-top:18px;font-size:13px;color:var(--muted);font-weight:600}
.art-body{max-width:760px;margin:0 auto;padding:48px 24px 8px}
.art-lead{font-size:16.5px;line-height:2;color:var(--ink);font-weight:500}
.toc{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:24px 26px;margin:36px 0}
.toc .ttl{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--blue);text-transform:uppercase}
.toc ol{margin:14px 0 0;padding-left:20px}
.toc li{margin:8px 0;font-size:14.5px;font-weight:600}
.toc a:hover{color:var(--blue)}
.art-body h2{font-size:clamp(21px,3vw,26px);font-weight:800;letter-spacing:-.01em;line-height:1.4;color:var(--navy);margin-top:52px;padding-left:16px;border-left:4px solid var(--blue);scroll-margin-top:90px}
.art-body p{font-size:15.5px;line-height:2;margin-top:20px;color:var(--ink)}
.art-list{margin:22px 0 0;padding:24px 26px;background:var(--soft);border-radius:12px;list-style:none}
.art-list li{position:relative;padding-left:22px;margin:11px 0;font-size:15px;font-weight:600;line-height:1.8;color:var(--ink)}
.art-list li::before{content:"";position:absolute;left:0;top:12px;width:7px;height:7px;border-radius:50%;background:var(--blue)}
.art-faq{margin-top:56px}
.art-faq h2{margin-bottom:8px}
.faq-item{border-bottom:1px solid var(--line);padding:20px 0}
.faq-item summary{font-size:15.5px;font-weight:700;color:var(--navy);cursor:pointer;list-style:none;display:flex;gap:10px;align-items:flex-start}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .q{display:inline-flex;width:26px;height:26px;flex:none;align-items:center;justify-content:center;background:var(--blueSoft);color:var(--blue);border-radius:50%;font-size:13px;font-weight:800}
.faq-item p{font-size:14.5px;line-height:1.9;color:var(--muted);margin-top:14px;padding-left:36px}
.art-cta{margin-top:56px;background:linear-gradient(135deg,var(--navy),var(--navy2));border-radius:18px;padding:38px 34px;color:#fff}
.art-cta .ey{color:var(--blue2)}
.art-cta h3{font-size:20px;font-weight:800;margin-top:10px;line-height:1.5}
.art-cta p{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.82);margin-top:12px}
.art-cta .row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.art-cta .btn-w{background:#fff;color:var(--navy)}
.art-cta .btn-o{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.related{max-width:760px;margin:0 auto;padding:8px 24px 0}
.related h2{font-size:18px;font-weight:800;color:var(--navy);margin-top:48px}
.related .grid{display:grid;gap:16px;margin-top:20px;grid-template-columns:1fr}
.rel-card{display:block;border:1px solid var(--line);border-radius:13px;padding:18px 20px;transition:.2s}
.rel-card:hover{border-color:var(--blue);transform:translateY(-2px);box-shadow:0 12px 28px rgba(15,36,64,.08)}
.rel-card .cat-badge{font-size:10px;padding:3px 10px}
.rel-card .rt{font-size:14px;font-weight:700;color:var(--navy);margin-top:10px;line-height:1.5}
@media(min-width:760px){.related .grid{grid-template-columns:repeat(2,1fr)}}
/* 記事一覧 */
.res-hero{background:radial-gradient(60% 50% at 85% 0%, var(--blueSoft), transparent 70%),linear-gradient(180deg,#fbfdff,#fff);border-bottom:1px solid var(--line)}
.res-hero .wrap{padding:54px 24px 58px;text-align:center}
.res-hero h1{font-size:clamp(28px,4.6vw,42px);font-weight:800;color:var(--navy);letter-spacing:-.02em;margin-top:12px}
.res-cat{padding:56px 0}
.res-cat h2{font-size:22px;font-weight:800;color:var(--navy);padding-left:14px;border-left:4px solid var(--blue)}
.res-grid{display:grid;gap:18px;margin-top:24px;grid-template-columns:1fr}
.res-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:14px;padding:22px 24px;transition:.2s;background:#fff}
.res-card:hover{border-color:var(--blue);transform:translateY(-3px);box-shadow:0 14px 32px rgba(15,36,64,.09)}
.res-card .rt{font-size:16px;font-weight:800;color:var(--navy);margin-top:12px;line-height:1.5}
.res-card .rd{font-size:13px;color:var(--muted);margin-top:10px;line-height:1.7;flex:1}
.res-card .more{font-size:13px;font-weight:700;color:var(--blue);margin-top:14px}
@media(min-width:680px){.res-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1000px){.res-grid{grid-template-columns:repeat(3,1fr)}}

/* ===== サムネイル画像 ===== */
.art-thumb{display:block;width:100%;max-width:760px;margin:36px auto 0;border-radius:16px;border:1px solid var(--line);box-shadow:0 18px 44px rgba(15,36,64,.12)}
.res-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px 12px 0 0;display:block;background:var(--soft)}
.res-card{padding:0;overflow:hidden}
.res-card-body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
.res-card-body .cat-badge{align-self:flex-start}
.rel-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:9px;display:block;margin-bottom:12px;background:var(--soft)}

/* ===================================================== */
/* ===== モバイルメニュー/固定CTA（site.jsが生成） 2026/6 ===== */
/* article.css にはこれらが無く .mnav がヘッダー下にベタ表示されていたため追加 */
/* ===================================================== */
.scrollbar{position:fixed;top:0;left:0;height:3px;width:0;z-index:100;background:linear-gradient(90deg,var(--blue),var(--blue2));box-shadow:0 0 12px rgba(47,147,240,.5)}
header.site.scrolled{box-shadow:0 10px 30px rgba(15,36,64,.08);background:rgba(255,255,255,.92);border-bottom-color:transparent}

.burger{display:none;flex-direction:column;gap:5px;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:11px;background:#fff;cursor:pointer;padding:0}
.burger span{width:20px;height:2px;background:var(--navy);border-radius:2px;transition:transform .3s ease, opacity .2s ease}
body.menu-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.menu-open .burger span:nth-child(2){opacity:0}
body.menu-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mnav{position:fixed;top:66px;left:0;right:0;z-index:49;background:rgba(255,255,255,.98);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);box-shadow:0 24px 50px rgba(15,36,64,.12);display:flex;flex-direction:column;padding:14px 24px 22px;transform:translateY(-14px);opacity:0;visibility:hidden;transition:transform .3s cubic-bezier(.16,1,.3,1), opacity .3s, visibility .3s}
body.menu-open .mnav{transform:none;opacity:1;visibility:visible}
.mnav a{padding:14px 6px;border-bottom:1px solid var(--soft);font-weight:600;color:var(--ink);font-size:15px}
.mnav a.m-cta-link{margin-top:12px;background:linear-gradient(135deg,#3aa3ff,#2f7fe0);color:#fff;text-align:center;border-radius:12px;border:none;box-shadow:0 8px 22px rgba(47,147,240,.3)}

/* ナビ切替の基準を本体(site.css)と統一：1120px未満はバーガー、以上はPCメニュー */
@media(max-width:1119px){header.site .menu{display:none}header.site .nav .cta{display:none}.burger{display:flex}}
@media(min-width:1120px){.menu{display:flex}.nav .cta{display:inline-flex}.mnav{display:none}.burger{display:none}}

/* スマホ固定CTA */
.m-cta{position:fixed;left:14px;right:14px;bottom:14px;z-index:60;opacity:0;transform:translateY(90px);transition:.35s;pointer-events:none}
body.show-mcta .m-cta{opacity:1;transform:none;pointer-events:auto}
.m-cta a{display:flex;justify-content:center;align-items:center;gap:8px;padding:15px;background:var(--blue);color:#fff;border-radius:999px;font-weight:800;font-size:15px;box-shadow:0 10px 30px rgba(47,147,240,.45);text-decoration:none}
@media(min-width:900px){.m-cta{display:none!important}}

/* 画像にwidth/height属性を付与してもCSS幅100%で歪まないための保険（CLS対策） */
img[width][height]{height:auto;max-width:100%}

/* ===== AI最適化: 要点・定義・表 ===== */
.art-keypoints{background:linear-gradient(180deg,#f5f9ff,#fff);border:1px solid #d6e6fb;border-left:4px solid var(--blue);border-radius:12px;padding:22px 26px;margin:28px 0}
.kp-ttl{font-size:13px;font-weight:800;color:var(--blue);letter-spacing:.06em;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.kp-ttl::before{content:"✓";display:inline-grid;place-items:center;width:20px;height:20px;background:var(--blue);color:#fff;border-radius:50%;font-size:12px}
.art-keypoints ul{margin:0;padding-left:20px}
.art-keypoints li{font-size:14.5px;font-weight:600;line-height:1.85;color:var(--ink);margin:7px 0}
.art-defs{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:22px 26px;margin:28px 0}
.art-defs dl{margin:0}
.art-defs dt{font-size:14.5px;font-weight:800;color:var(--navy);margin-top:12px}
.art-defs dt:first-child{margin-top:0}
.art-defs dd{font-size:14px;line-height:1.8;color:var(--muted);margin:5px 0 0}
.art-table-wrap{overflow-x:auto;margin:22px 0 0}
.art-table{width:100%;border-collapse:collapse;font-size:14px;min-width:420px}
.art-table th,.art-table td{border:1px solid var(--line);padding:11px 14px;text-align:left;line-height:1.7}
.art-table th{background:var(--navy);color:#fff;font-weight:700;font-size:13px}
.art-table tbody tr:nth-child(even){background:var(--soft)}
.art-table td:first-child{font-weight:700;color:var(--navy);background:#f0f5fc}