:root{
  --navy:#0b1f45; --blue:#1f4fa8; --sky:#3a8be0; --ink:#1c2433; --sub:#5b6577;
  --line:#dde3ee; --bg:#ffffff; --bg2:#f4f7fb;
  --serif:"Cormorant Garamond",serif; --sans:"Noto Sans JP",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.9;font-size:15px}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}

/* ヘッダー */
header{position:fixed;inset:0 0 auto 0;z-index:10;display:flex;align-items:center;justify-content:space-between;padding:18px 32px;background:rgba(11,31,69,.55);backdrop-filter:blur(8px)}
.logo{display:flex;align-items:center;gap:10px;color:#fff}
.logo-mark{width:34px;height:34px}
.logo b{font-family:var(--serif);font-size:26px;letter-spacing:.18em;font-weight:600}
nav ul{display:flex;gap:28px;list-style:none;align-items:center}
nav a{color:#fff;font-family:var(--serif);font-size:16px;letter-spacing:.06em;opacity:.9}
nav a:hover{opacity:1}
nav .btn-contact{background:#fff;color:var(--navy);padding:10px 26px;border-radius:30px;font-family:var(--sans);font-size:13px;font-weight:700}
#menu-toggle{display:none}
.menu-btn{display:none;color:#fff;font-size:13px;letter-spacing:.1em;cursor:pointer;border:1px solid rgba(255,255,255,.6);padding:6px 14px;border-radius:20px}

/* ヒーロー */
.hero{position:relative;height:100vh;min-height:600px;max-height:860px;display:flex;align-items:center;color:#fff;overflow:hidden;
  background:linear-gradient(120deg,#081633 0%,#12347a 45%,#2a6fd0 100%)}
.hero svg.shapes{position:absolute;inset:0;width:100%;height:100%}
.hero .wrap{position:relative;width:100%}
.hero h1{font-family:var(--serif);font-weight:500;font-size:clamp(48px,8vw,96px);line-height:1.05;letter-spacing:.02em}
.hero p.en{font-family:var(--serif);font-size:clamp(20px,2.6vw,30px);margin-top:18px;opacity:.9}
.hero p.ja{margin-top:28px;font-size:clamp(15px,1.6vw,18px);font-weight:500;letter-spacing:.08em}
.scroll{position:absolute;left:28px;bottom:40px;writing-mode:vertical-rl;font-family:var(--serif);font-size:13px;letter-spacing:.2em;opacity:.8}

/* 共通の見出し */
section{padding:110px 0}
.sec-head{margin-bottom:48px}
.sec-head h2{font-family:var(--serif);font-weight:500;font-size:clamp(38px,5vw,56px);color:var(--navy);line-height:1.1}
.sec-head span{display:block;color:var(--blue);font-size:13px;font-weight:700;letter-spacing:.12em;margin-top:8px}

/* Purpose */
.purpose .grid{display:grid;grid-template-columns:1fr 1.4fr;gap:60px;align-items:start}
.purpose h3{font-size:clamp(22px,2.6vw,30px);line-height:1.6;color:var(--navy);margin-bottom:24px}
.purpose p{color:var(--sub);margin-bottom:14px}

/* Service（4枚パネル） */
.service{padding:0}
.panels{display:grid;grid-template-columns:repeat(4,1fr);min-height:520px}
.panel{position:relative;color:#fff;padding:56px 28px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;overflow:hidden;border-right:1px solid rgba(255,255,255,.25)}
.panel:last-child{border-right:0}
.panel::before{content:"";position:absolute;inset:0;background:var(--bg-img);transition:transform .6s}
.panel::after{content:"";position:absolute;inset:0;background:rgba(8,22,51,.45)}
.panel:hover::before{transform:scale(1.06)}
.panel > *{position:relative;z-index:1}
.panel .num{font-family:var(--serif);font-size:15px;letter-spacing:.2em;opacity:.8}
.panel h3{font-family:var(--serif);font-weight:500;font-size:clamp(26px,2.6vw,34px);line-height:1.2;margin:10px 0 6px}
.panel .ja-t{font-weight:700;font-size:15px;margin-bottom:16px}
.panel p{font-size:13px;line-height:1.8;opacity:.95;max-width:240px}
.panel .more{margin-top:26px;border:1px solid rgba(255,255,255,.8);border-radius:30px;padding:7px 26px;font-family:var(--serif);font-size:13px;letter-spacing:.12em}
.p1{--bg-img:linear-gradient(160deg,#1b3f8f,#3a8be0)}
.p2{--bg-img:linear-gradient(160deg,#0d3a5c,#1f86a8)}
.p3{--bg-img:linear-gradient(160deg,#20306e,#5a5fc8)}
.p4{--bg-img:linear-gradient(160deg,#0b1f45,#2a5aa6)}

/* サービス詳細 */
.detail{background:var(--bg2)}
.detail-list{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.card{background:#fff;border:1px solid var(--line);border-radius:6px;padding:36px 34px}
.card .tag{display:inline-block;font-family:var(--serif);color:var(--blue);font-size:15px;letter-spacing:.1em;margin-bottom:6px}
.card h3{font-size:20px;color:var(--navy);margin-bottom:12px}
.card p{color:var(--sub);font-size:14px;margin-bottom:14px}
.card ul{list-style:none;display:flex;flex-wrap:wrap;gap:8px}
.card li{font-size:12px;background:var(--bg2);border:1px solid var(--line);border-radius:20px;padding:3px 12px;color:var(--ink)}

/* Strength / Data */
.data{background:var(--navy);color:#fff}
.data .sec-head h2{color:#fff}
.data .sec-head span{color:#8fb8ff}
.nums{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.nums div{border-top:1px solid rgba(255,255,255,.3);padding-top:26px}
.nums b{display:block;font-family:var(--serif);font-size:clamp(44px,5vw,64px);font-weight:500;line-height:1}
.nums b small{font-size:.4em;margin-left:4px}
.nums span{font-size:13px;opacity:.85}
.note{font-size:12px;opacity:.6;margin-top:28px;text-align:right}

/* Flow */
.flow ol{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:s}
.flow li{counter-increment:s;border:1px solid var(--line);border-radius:6px;padding:26px 18px;position:relative}
.flow li::before{content:"STEP 0" counter(s);font-family:var(--serif);color:var(--blue);font-size:14px;letter-spacing:.12em;display:block;margin-bottom:6px}
.flow li h4{font-size:16px;color:var(--navy);margin-bottom:6px}
.flow li p{font-size:13px;color:var(--sub);line-height:1.7}

/* News */
.news{background:var(--bg2)}
.news-list{list-style:none;border-top:1px solid var(--line)}
.news-list li{display:grid;grid-template-columns:120px 110px 1fr;gap:16px;padding:20px 4px;border-bottom:1px solid var(--line);font-size:14px}
.news-list time{font-family:var(--serif);font-size:16px;color:var(--sub)}
.news-list .cat{font-size:12px;border:1px solid var(--blue);color:var(--blue);border-radius:20px;text-align:center;padding:1px 0;align-self:center}

/* About */
.about table{width:100%;border-collapse:collapse;font-size:14px}
.about th,.about td{border-bottom:1px solid var(--line);padding:18px 12px;text-align:left;vertical-align:top}
.about th{width:200px;color:var(--navy);font-weight:700}
.about td ol{padding-left:1.4em}
.todo{background:#fff4d6;color:#7a5200;font-size:12px;padding:1px 8px;border-radius:3px;margin-left:6px;white-space:nowrap}

/* Contact */
.contact{background:linear-gradient(120deg,#081633,#1f4fa8);color:#fff;text-align:center}
.contact .sec-head h2{color:#fff}
.contact .sec-head span{color:#8fb8ff}
.contact p{opacity:.9}
.contact .btn{display:inline-block;margin-top:34px;background:#fff;color:var(--navy);font-weight:700;padding:16px 56px;border-radius:40px;letter-spacing:.1em}

/* フッター */
footer{background:#06132c;color:#c8d2e4;padding:56px 0 30px;font-size:13px}
footer .cols{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:40px}
footer h5{font-family:var(--serif);color:#fff;font-size:18px;font-weight:500;margin-bottom:12px}
footer ul{list-style:none;line-height:2.2}
footer a:hover{color:#fff}
footer .copy{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;text-align:center;font-size:12px;opacity:.7}

/* スマホ */
@media (max-width:900px){
  header{padding:14px 16px}
  .menu-btn{display:block}
  nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--navy);padding:16px}
  nav ul{flex-direction:column;gap:14px}
  #menu-toggle:checked ~ nav{display:block}
  .wrap{padding:0 16px}
  section{padding:72px 0}
  .purpose .grid,.detail-list{grid-template-columns:1fr;gap:24px}
  .panels{grid-template-columns:1fr 1fr}
  .panel{min-height:300px;border-bottom:1px solid rgba(255,255,255,.25)}
  .nums{grid-template-columns:1fr 1fr;gap:32px 16px}
  .flow ol{grid-template-columns:1fr}
  .news-list li{grid-template-columns:1fr auto;}
  .news-list li a{grid-column:1/-1}
  .about th{width:110px}
  footer .cols{grid-template-columns:1fr}
  .scroll{display:none}
}
@media (max-width:520px){ .panels{grid-template-columns:1fr} }

/* 下層ページ */
body.sub header{background:var(--navy);backdrop-filter:none}
.page-title{background:linear-gradient(120deg,#081633 0%,#12347a 55%,#2a6fd0 100%);color:#fff;padding:150px 0 70px}
.page-title h1{font-family:var(--serif);font-weight:500;font-size:clamp(36px,5vw,56px);line-height:1.1}
.page-title p{font-size:13px;font-weight:700;letter-spacing:.12em;color:#8fb8ff;margin-top:8px}
.doc{padding:80px 0}
.doc .wrap{max-width:880px}
.doc h2{font-size:20px;color:var(--navy);margin:48px 0 14px;padding-left:12px;border-left:4px solid var(--blue)}
.doc h2:first-child{margin-top:0}
.doc p,.doc li{color:var(--ink);font-size:14px}
.doc ol,.doc ul{padding-left:1.4em;margin:8px 0}
.doc table{width:100%;border-collapse:collapse;font-size:14px;margin:10px 0}
.doc th,.doc td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.doc th{background:var(--bg2);color:var(--navy);width:42%;font-weight:700}
.doc .meta{color:var(--sub);font-size:13px;text-align:right;margin-top:40px}

/* フォーム */
.form{display:grid;gap:22px}
.form label{display:block;font-weight:700;font-size:14px;color:var(--navy);margin-bottom:6px}
.form .req{background:#c0392b;color:#fff;font-size:11px;padding:1px 6px;border-radius:3px;margin-left:6px;font-weight:500}
.form input[type=text],.form input[type=email],.form input[type=tel],.form select,.form textarea{width:100%;border:1px solid #b9c3d4;border-radius:4px;padding:12px;font:inherit;font-size:15px;background:#fff}
.form textarea{min-height:180px;resize:vertical}
.form .agree{font-size:14px}
.form .hp{position:absolute;left:-9999px}
.form button{justify-self:center;background:var(--navy);color:#fff;border:0;border-radius:40px;padding:16px 64px;font:inherit;font-weight:700;letter-spacing:.1em;cursor:pointer}
.form button:hover{background:var(--blue)}
.msg{border-radius:6px;padding:18px 20px;margin-bottom:28px;font-size:14px}
.msg.ok{background:#e8f5ec;border:1px solid #9fd3ad;color:#1d5a2e}
.msg.ng{background:#fdecea;border:1px solid #f1a9a0;color:#8a1f12}
.confirm th{width:30%}