:root{
  --accent:#2f6fee;--accent-2:#2358d6;--accent-3:#1c46ae;
  --ink:#15294d;--text:#4a5870;--muted:#8a98ad;--line:#e6ebf3;
  --soft:#f3f6fb;--soft2:#eef2f9;--navy:#0b1e3e;--accent-soft:#e9f1fe;
  --container:1440px;--radius:18px;--radius-s:12px;
  --ease-soft:cubic-bezier(.16,1,.3,1);--ease-expo:cubic-bezier(.77,0,.175,1);
  --shadow:0 30px 66px -32px rgba(16,36,61,.32);--shadow-s:0 14px 32px -16px rgba(16,36,61,.2);
}
*{margin:0;padding:0;box-sizing:border-box}
html{overflow-x:hidden;scroll-behavior:smooth}
body{font-family:"Zen Kaku Gothic New",sans-serif;color:var(--text);background:#fff;line-height:1.8;-webkit-font-smoothing:antialiased;overflow-x:hidden}
em, i, cite{font-style:normal}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1, h2, h3, h4{color:var(--ink);font-weight:700;line-height:1.4}
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:32px}
.section{padding-block:64px}
.lat{font-family:"Inter",sans-serif}
.eyebrow{font-family:"Inter",sans-serif;font-size:12px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--accent)}
.shead{text-align:center;margin-bottom:40px}
.shead h2{font-size:clamp(24px,3vw,36px);margin-bottom:12px}
.shead .ssub{font-size:14.5px;color:var(--text)}
.spbr{display:none}
.fade-up{opacity:1}
html.anim .fade-up{opacity:0;transform:translateY(30px)}
/* Header */
.hd{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(230,235,243,.8);transition:.3s}
/* Breadcrumb */
.crumb{padding-top:98px}
.crumb .container{display:flex;align-items:center;gap:9px;font-family:"Inter",sans-serif;font-size:12.5px;color:var(--muted);padding-block:14px}
.crumb a:hover{color:var(--accent)}
.crumb .sep{opacity:.6}
.crumb .cur{color:var(--ink);font-family:"Zen Kaku Gothic New",sans-serif;font-weight:500}
/* ===== Hero（ダーク） ===== */
.thero{position:relative;overflow:hidden;background:#081428;color:#fff}
.thero .thbg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:72% center;z-index:0}
.thero::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(94deg,rgba(5,12,28,.93) 0%,rgba(6,16,36,.82) 34%,rgba(8,20,46,.42) 66%,rgba(8,20,46,.28) 100%)}
.thero .thnet{position:absolute;inset:0;z-index:2;opacity:.7;pointer-events:none}
.thero .container{position:relative;z-index:3}
.thero-inner{padding-block:108px 130px;max-width:760px}
.thero h1{color:#fff;font-size:clamp(38px,5vw,62px);font-weight:900;line-height:1.22;letter-spacing:.02em;margin-bottom:26px}
.thero .lead{color:rgba(255,255,255,.9);font-size:clamp(14px,1.4vw,17px);line-height:2.1;margin-bottom:34px}
.thero-btns{display:flex;gap:14px;flex-wrap:wrap}
/* ===== クイックリンク4枚（ヒーローに重ねる） ===== */
.qlinks{position:relative;z-index:5;margin-top:-60px;padding-bottom:8px}
.ql{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.qlcard{position:relative;display:flex;align-items:center;gap:18px;height:118px;padding-inline:30px;border-radius:16px;overflow:hidden;border:1px solid rgba(255,255,255,.14);box-shadow:0 26px 50px -26px rgba(8,20,46,.6);color:#fff;font-weight:700;font-size:21px;letter-spacing:.01em;transition:.32s var(--ease-soft)}
.qlcard img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;transition:.5s var(--ease-soft)}
.qlcard::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(100deg,rgba(6,14,32,.84) 0%,rgba(6,14,32,.66) 55%,rgba(6,14,32,.5) 100%)}
.qlcard .qli, .qlcard .qlt{position:relative;z-index:2}
.qlcard .qli{width:42px;height:42px;flex:none}
.qlcard .qli svg{width:100%;height:100%;stroke:#fff;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.qlcard:hover{transform:translateY(-6px);box-shadow:0 34px 60px -26px rgba(8,20,46,.7);border-color:rgba(120,165,255,.55)}
.qlcard:hover img{transform:scale(1.08)}
/* ===== 開発フィロソフィー ===== */
.philo{background:#fff}
.pgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 24px;transition:.3s var(--ease-soft)}
.pcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-s);border-color:#d8e2f3}
.pcard .ptop{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.pcard .pic{width:46px;height:46px;flex:none;color:var(--accent)}
.pcard .pic svg{width:100%;height:100%;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.pcard h3{font-size:16.5px;line-height:1.5}
.pcard p{font-size:13.5px;line-height:1.9}
/* ===== 技術スタック ===== */
.stack{background:var(--soft)}
.stack-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-s);padding:30px;display:grid;grid-template-columns:1fr 420px;gap:30px;align-items:stretch}
.stack-cols{display:grid;grid-template-columns:repeat(6,1fr);gap:0}
.scol{padding-inline:16px;border-left:1px solid var(--line)}
.scol:first-child{border-left:none;padding-left:2px}
.scol h3{font-family:"Inter",sans-serif;font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.02em;padding-bottom:10px;border-bottom:2px solid var(--accent-soft);margin-bottom:6px;white-space:nowrap}
.scol ul{list-style:none}
.scol li{font-family:"Inter",sans-serif;font-size:13.5px;font-weight:500;color:var(--ink);padding-block:9px;border-bottom:1px solid var(--soft2)}
.scol li:last-child{border-bottom:none}
.stack-img{border-radius:14px;overflow:hidden;position:relative;min-height:230px}
.stack-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
/* ===== 開発プロセス ===== */
.process{background:#fff}
.prow{display:flex;align-items:flex-start;justify-content:space-between;gap:6px}
.pstep{display:flex;flex-direction:column;align-items:center;text-align:center;flex:1;min-width:0}
.pstep .pcir{width:88px;height:88px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-s);display:grid;place-items:center;color:var(--accent);margin-bottom:16px;transition:.3s var(--ease-soft)}
.pstep:hover .pcir{transform:translateY(-4px);border-color:#cdddfa;box-shadow:0 18px 36px -18px rgba(47,111,238,.45)}
.pstep .pcir svg{width:38px;height:38px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.pstep h3{font-size:16px;margin-bottom:8px}
.pstep p{font-size:12.5px;line-height:1.85;max-width:158px}
.parrow{flex:none;align-self:flex-start;margin-top:38px;width:54px;display:flex;align-items:center;color:var(--accent)}
.parrow svg{width:100%;height:12px}
/* ===== 開発体制 ===== */
.taisei{background:var(--soft)}
.tgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tcard{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 18px 22px;transition:.3s var(--ease-soft)}
.tcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-s)}
.tcard .timg{border-radius:12px;overflow:hidden;height:200px;margin-bottom:16px;box-shadow:0 10px 22px -14px rgba(8,20,46,.55)}
.tcard .timg img{width:100%;height:100%;object-fit:cover;transition:.5s var(--ease-soft)}
.tcard:hover .timg img{transform:scale(1.06)}
.tcard h3{font-size:18px;line-height:1.45;margin-bottom:8px}
.tcard p{font-size:13.5px;line-height:1.8;color:var(--text)}
/* ===== 品質・セキュリティ ===== */
.quality{background:#fff}
.qgrid{display:grid;grid-template-columns:repeat(7,1fr);gap:22px 18px}
.qitem .qic{width:46px;height:46px;color:var(--accent);margin:0 auto 13px}
.qitem .qic svg{width:100%;height:100%;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.qitem h3{font-size:14.5px;line-height:1.5;margin-bottom:6px;text-align:center}
.qitem p{font-size:12.3px;line-height:1.8;text-align:center}
/* ===== 技術ブログ ===== */
.tblog{background:var(--soft)}
.bgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.bcard{background:#fff;border:1px solid var(--line);border-radius:15px;overflow:hidden;display:flex;flex-direction:column;transition:.3s var(--ease-soft)}
.bcard:hover{transform:translateY(-5px);box-shadow:var(--shadow-s)}
.bcard .bimg{height:190px;overflow:hidden;flex:none}
.bcard .bimg img{width:100%;height:100%;object-fit:cover;transition:.5s var(--ease-soft)}
.bcard:hover .bimg img{transform:scale(1.07)}
.bcard .bbody{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.bcard h3{font-size:16.5px;line-height:1.6;margin-bottom:14px;flex:1}
.bcard .bdate{font-family:"Inter",sans-serif;font-size:13px;color:var(--muted)}
.tblog-more{text-align:center;margin-top:40px}
/* ===== CTA（共通デザイン） ===== */
.cta{position:relative;overflow:hidden;color:#fff;background:linear-gradient(115deg,#0c3aa0,#0e2f7e)}
/* ===== Footer ===== */
.ft{background:var(--navy);color:rgba(255,255,255,.7)}
/* ===== Responsive ===== */
@media(max-width:1180px){
  .stack-card{grid-template-columns:1fr}
  .stack-cols{grid-template-columns:repeat(3,1fr);gap:8px 0}
  .scol:nth-child(4){border-left:none;padding-left:2px}
  .scol{margin-bottom:8px}
  .stack-img{min-height:240px}
  .qgrid{grid-template-columns:repeat(4,1fr)}
  .prow{flex-wrap:wrap;justify-content:center;gap:26px 0}
  .pstep{flex:0 0 33.33%}
  .parrow{display:none}
}
@media(max-width:980px){.tgrid{grid-template-columns:repeat(2,1fr)}
.bgrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){.section{padding-block:50px}
.thero-inner{padding-block:72px 110px}
.ql{gap:16px}
.qlcard{height:96px;font-size:17px;gap:13px;padding-inline:22px}
.qlcard .qli{width:32px;height:32px}
.pgrid{grid-template-columns:repeat(2,1fr);gap:14px}
.qgrid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:560px){.container{padding-inline:20px}
.crumb{padding-top:86px}
.thero-inner{padding-block:52px 100px}
.thero .lead{margin-bottom:26px}
.thero-btns .btn{padding:12px 20px;font-size:13.5px}
.qlinks{margin-top:-52px}
.ql{grid-template-columns:repeat(2,1fr);gap:12px}
.qlcard{height:84px;gap:9px;font-size:12.5px;padding-inline:14px;border-radius:13px}
.qlcard .qlt{display:block;white-space:nowrap}
.spbr{display:none}
.qlcard .qli{width:24px;height:24px}
.pgrid{grid-template-columns:1fr}
.stack-card{padding:18px}
.stack-cols{grid-template-columns:repeat(2,1fr)}
.scol{padding-inline:12px}
.scol:nth-child(odd){border-left:none;padding-left:2px}
.pstep{flex:0 0 50%}
.pstep .pcir{width:72px;height:72px}
.pstep .pcir svg{width:31px;height:31px}
.pstep p{max-width:150px}
.tgrid{grid-template-columns:1fr;gap:16px}
.tcard .timg{height:190px}
.qgrid{grid-template-columns:repeat(2,1fr);gap:20px 14px}
.bgrid{grid-template-columns:1fr;gap:16px}
.bcard .bimg{height:180px}}