@charset "UTF-8";
/* ============================================================
   株式会社Lastand — Design System
   Art Direction: 案A「信頼の紺 × 明朝」
   原則: カードに頼らない / 罫線と余白で区切る / 左揃え基調 /
         非対称グリッド / 明朝×ゴシック×ガラモンの混植
============================================================ */

:root{
  --navy:#1B3A5C;
  --navy-deep:#12283F;
  --ink:#141F2B;
  --body:#333E49;
  --muted:#5F6A76;
  --paper:#FFFFFF;
  --mist:#F5F6F7;
  --line:#DCE1E7;
  --line-strong:#AEB8C2;
  --brass:#B08D57;
  --brass-soft:#D8C5A5;

  --serif:"Shippori Mincho B1","Shippori Mincho","Hiragino Mincho ProN","Yu Mincho",serif;
  --sans:"Noto Sans JP",-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic Medium",sans-serif;
  --en:"Cormorant Garamond","EB Garamond",Georgia,serif;

  --maxw:1160px;
  --gutter:clamp(20px,5vw,48px);

  /* 余白3段階 */
  --space-l:clamp(96px,12vw,180px);
  --space-m:clamp(72px,9vw,120px);
  --space-s:clamp(48px,6vw,64px);
}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-weight:500;
  font-feature-settings:"palt" 1;
  color:var(--body);
  background:var(--paper);
  line-height:2.05;
  font-size:15.5px;
  letter-spacing:.02em;
  text-rendering:optimizeLegibility;
}
img,svg{max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
p{margin:0}
ul,ol,dl,dd,figure{margin:0;padding:0}
li{list-style:none}
::selection{background:var(--navy);color:#fff}
:focus-visible{outline:2px solid var(--brass);outline-offset:3px}

h1,h2,h3,h4{
  font-family:var(--serif);
  font-weight:700;
  color:var(--ink);
  margin:0;
  line-height:1.55;
  letter-spacing:.06em;
}

.container{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.nw{display:inline-block}

/* ---------- 英字ラベル ---------- */
.en-label{
  font-family:var(--en);
  font-weight:600;
  font-size:.84rem;
  letter-spacing:.34em;
  text-transform:uppercase;
  color:var(--brass);
  display:block;
}
.en-label--vertical{
  writing-mode:vertical-rl;
  letter-spacing:.42em;
}

/* ---------- ボタン ---------- */
.btn{
  display:inline-flex;align-items:center;gap:18px;
  font-family:var(--sans);font-weight:500;font-size:.92rem;
  letter-spacing:.14em;
  padding:17px 40px;
  border:1px solid var(--navy);
  color:var(--navy);
  background:transparent;
  cursor:pointer;
  transition:background .3s ease,color .3s ease,border-color .3s ease;
  white-space:nowrap;
}
.btn .arrow{
  display:inline-block;width:34px;height:12px;position:relative;
  transition:transform .3s ease;
}
.btn .arrow::before{
  content:"";position:absolute;left:0;top:50%;width:calc(100% - 3px);height:1px;
  background:currentColor;
}
.btn .arrow::after{
  content:"";position:absolute;right:1px;top:50%;width:7px;height:7px;
  border-top:1px solid currentColor;border-right:1px solid currentColor;
  transform:translateY(-50%) rotate(45deg);
}
.btn:hover{background:var(--navy);color:#fff}
.btn:hover .arrow{transform:translateX(6px)}
.btn--fill{background:var(--navy);color:#fff}
.btn--fill:hover{background:var(--navy-deep);border-color:var(--navy-deep)}
.btn--light{border-color:#fff;color:#fff}
.btn--light:hover{background:#fff;color:var(--navy)}

/* テキストリンク（矢印つき） */
.tlink{
  display:inline-flex;align-items:center;gap:14px;
  font-weight:500;font-size:.92rem;letter-spacing:.12em;color:var(--navy);
}
.tlink .arrow{display:inline-block;width:30px;height:12px;position:relative;transition:transform .3s ease}
.tlink .arrow::before{content:"";position:absolute;left:0;top:50%;width:calc(100% - 3px);height:1px;background:currentColor}
.tlink .arrow::after{content:"";position:absolute;right:1px;top:50%;width:7px;height:7px;border-top:1px solid currentColor;border-right:1px solid currentColor;transform:translateY(-50%) rotate(45deg)}
.tlink:hover .arrow{transform:translateX(6px)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(10px);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease;
}
.site-header::before{
  content:"";display:block;height:3px;
  background:linear-gradient(90deg,var(--navy) 0%,var(--navy) 72%,var(--brass) 72%,var(--brass) 100%);
}
.site-header.scrolled{border-bottom-color:var(--line)}
.header-inner{
  max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter);
  display:flex;align-items:center;justify-content:space-between;height:80px;
}
.brand{display:flex;align-items:center;gap:12px}
.brand .mark{width:34px;height:34px;flex:0 0 auto}
.brand .name{
  font-family:var(--serif);font-weight:700;font-size:1.12rem;
  letter-spacing:.08em;color:var(--ink);line-height:1;
}
.brand .name small{
  display:block;font-family:var(--en);font-weight:500;font-size:.6rem;
  letter-spacing:.3em;color:var(--muted);margin-top:5px;text-transform:uppercase;
}
.gnav{display:flex;align-items:center;gap:34px}
.gnav a:not(.btn){
  font-size:.88rem;font-weight:500;letter-spacing:.1em;color:var(--ink);
  position:relative;padding-block:6px;
}
.gnav a:not(.btn)::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;
  background:var(--brass);transition:width .3s ease;
}
.gnav a:not(.btn):hover::after,
.gnav a:not(.btn)[aria-current="page"]::after{width:100%}
.gnav .btn{padding:12px 26px;font-size:.84rem}
.menu-btn{
  display:none;background:none;border:0;padding:10px;cursor:pointer;color:var(--ink);
}
.menu-btn .bars{display:block;width:26px;height:14px;position:relative}
.menu-btn .bars::before,.menu-btn .bars::after{
  content:"";position:absolute;left:0;width:100%;height:1.5px;background:currentColor;
  transition:transform .3s ease,top .3s ease,bottom .3s ease;
}
.menu-btn .bars::before{top:0}
.menu-btn .bars::after{bottom:0}
.menu-btn[aria-expanded="true"] .bars::before{top:6px;transform:rotate(24deg)}
.menu-btn[aria-expanded="true"] .bars::after{bottom:6.5px;transform:rotate(-24deg)}

/* ---------- section 骨格 ---------- */
.sec{padding-block:var(--space-m)}
.sec--l{padding-block:var(--space-l)}
.sec--mist{background:var(--mist)}
.sec--rule{border-top:1px solid var(--line)}

/* 左：番号＋英字ラベル／右：本文 の非対称ヘッド */
.sec-head{
  display:grid;grid-template-columns:minmax(200px,280px) 1fr;
  gap:32px clamp(40px,6vw,88px);
  margin-bottom:clamp(44px,6vw,72px);
  align-items:start;
}
.sec-head .idx{
  display:flex;align-items:baseline;gap:20px;
  border-top:1px solid var(--ink);padding-top:20px;
}
.sec-head .idx .num{
  font-family:var(--en);font-weight:500;font-size:2.4rem;line-height:1;color:var(--ink);
}
.sec-head .idx .en-label{padding-top:6px}
.sec-head h2{font-size:clamp(1.5rem,3vw,2.05rem)}
.sec-head .desc{margin-top:20px;color:var(--muted);font-size:.98rem;max-width:640px}

/* 中央揃えの「余白で聴かせる」ステートメント（使用は1ページ1回まで） */
.statement{
  text-align:center;padding-block:var(--space-l);
}
.statement .en-label{margin-bottom:26px}
.statement p{
  font-family:var(--serif);font-size:clamp(1.3rem,2.6vw,1.85rem);
  color:var(--ink);letter-spacing:.1em;line-height:2.3;
}

/* ---------- hero（トップ） ---------- */
.hero{position:relative;overflow:hidden}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1fr auto;gap:40px;
  padding-block:clamp(80px,12vw,150px) clamp(72px,10vw,130px);
  align-items:stretch;
}
.hero .en-label{margin-bottom:34px}
.hero h1{
  font-size:clamp(2.5rem,6.2vw,4.3rem);
  font-weight:600;line-height:1.5;letter-spacing:.08em;
}
.hero .rule{
  width:64px;height:1px;background:var(--brass);margin-block:38px;
}
.hero .lead{
  max-width:560px;font-size:1.02rem;color:var(--body);
}
.hero .cta-row{margin-top:48px;display:flex;flex-wrap:wrap;gap:16px}
.hero-side{
  display:flex;align-items:flex-end;padding-bottom:8px;
}
.hero-side .en-label--vertical{
  font-size:.76rem;color:var(--line-strong);
}
.hero-art{
  position:absolute;right:-4%;top:50%;transform:translateY(-50%);
  width:min(620px,58vw);z-index:0;pointer-events:none;opacity:.9;
}
.hero-foot{
  border-top:1px solid var(--line);
}
.hero-foot .row{
  max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter);
  display:flex;flex-wrap:wrap;gap:8px clamp(28px,5vw,64px);
  padding-block:20px;
}
.hero-foot .row span{
  font-size:.82rem;letter-spacing:.1em;color:var(--muted);
  display:inline-flex;align-items:center;gap:10px;
}
.hero-foot .row span::before{
  content:"";width:5px;height:5px;background:var(--brass);display:inline-block;
  transform:rotate(45deg);
}

/* ---------- 下層ページヘッド ---------- */
.page-head{
  border-bottom:1px solid var(--line);
  padding-block:clamp(60px,9vw,110px) clamp(44px,6vw,72px);
}
.page-head .en-label{margin-bottom:26px}
.page-head h1{font-size:clamp(1.9rem,4.4vw,3rem);line-height:1.5}
.page-head .lead{margin-top:30px;max-width:720px;color:var(--body);font-size:1rem}
.breadcrumb{
  padding-block:18px;font-size:.78rem;letter-spacing:.08em;color:var(--muted);
  display:flex;gap:14px;flex-wrap:wrap;
}
.breadcrumb a:hover{color:var(--navy)}
.breadcrumb .sep{color:var(--line-strong)}

/* ---------- 左右分割（事業紹介など） ---------- */
.split{
  display:grid;grid-template-columns:5fr 7fr;
  gap:clamp(36px,6vw,88px);align-items:center;
}
.split--rev{grid-template-columns:7fr 5fr}
.split--rev .split-copy{order:2}
.split--rev .split-media{order:1}
.split-copy .en-label{margin-bottom:22px}
.split-copy h3{font-size:clamp(1.35rem,2.6vw,1.8rem)}
.split-copy .sub{
  font-family:var(--serif);color:var(--navy);font-size:1.02rem;
  margin-top:14px;letter-spacing:.08em;
}
.split-copy p{margin-top:22px;color:var(--muted);font-size:.96rem}
.split-copy .tlink{margin-top:32px}
.split-media{
  border:1px solid var(--line);
  padding:clamp(28px,4vw,52px);
  background:var(--paper);
}
.split-media--plain{border:0;padding:0;background:transparent}

/* ---------- 番号つき罫線リスト（課題・理由） ---------- */
.rows{border-top:1px solid var(--line)}
.row-item{
  display:grid;grid-template-columns:110px 320px 1fr;
  gap:16px clamp(24px,4vw,56px);
  padding-block:clamp(28px,4vw,42px);
  border-bottom:1px solid var(--line);
  align-items:baseline;
}
.row-item .num{
  font-family:var(--en);font-weight:500;font-size:1.7rem;color:var(--brass);line-height:1;
}
.row-item h3,.row-item h4{font-size:1.12rem;letter-spacing:.06em}
.row-item p{color:var(--muted);font-size:.94rem}

/* ---------- 機能一覧（下層・罫線グリッド） ---------- */
.feat-grid{
  display:grid;grid-template-columns:1fr 1fr;
  gap:0 clamp(40px,6vw,80px);
}
.feat{
  border-top:1px solid var(--line);
  padding-block:clamp(30px,4vw,44px);
}
.feat .feat-head{display:flex;align-items:baseline;gap:18px}
.feat .num{font-family:var(--en);font-size:1.15rem;color:var(--brass);line-height:1}
.feat h3{font-size:1.15rem}
.feat p{margin-top:14px;color:var(--muted);font-size:.93rem}
.feat .note{font-size:.8rem;color:var(--muted);opacity:.85}

/* ---------- ステップ ---------- */
.steps{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:0 clamp(32px,5vw,64px);
}
.step{border-top:1px solid var(--ink);padding-top:26px;position:relative}
.step .num{
  font-family:var(--en);font-weight:500;font-size:2.2rem;color:var(--ink);line-height:1;
}
.step h3{font-size:1.08rem;margin-top:18px}
.step p{margin-top:12px;color:var(--muted);font-size:.92rem}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;
  display:grid;grid-template-columns:64px 1fr 40px;align-items:center;
  gap:12px;padding-block:26px;
  font-family:var(--serif);font-weight:600;font-size:1.04rem;color:var(--ink);
  letter-spacing:.05em;
  transition:color .25s ease;
}
.faq summary:hover{color:var(--navy)}
.faq summary::-webkit-details-marker{display:none}
.faq summary .q{font-family:var(--en);font-size:1.2rem;color:var(--brass);font-weight:400}
.faq summary .pm{
  position:relative;width:16px;height:16px;justify-self:end;
}
.faq summary .pm::before,.faq summary .pm::after{
  content:"";position:absolute;background:var(--ink);transition:transform .3s ease;
}
.faq summary .pm::before{left:0;top:50%;width:100%;height:1px}
.faq summary .pm::after{left:50%;top:0;width:1px;height:100%}
.faq details[open] summary .pm::after{transform:rotate(90deg)}
.faq .a{
  padding:0 40px 30px 64px;color:var(--muted);font-size:.94rem;
}

/* ---------- 会社概要テーブル ---------- */
.co-table{border-top:1px solid var(--line);max-width:860px}
.co-table .crow{
  display:grid;grid-template-columns:220px 1fr;
  border-bottom:1px solid var(--line);
}
.co-table dt{
  padding:24px 20px 24px 4px;
  font-family:var(--serif);font-weight:600;color:var(--ink);font-size:.95rem;
  letter-spacing:.08em;
}
.co-table dd{padding:24px 4px;font-size:.95rem;color:var(--body)}

/* ---------- MVV ---------- */
.mvv-item{
  display:grid;grid-template-columns:minmax(180px,240px) 1fr;
  gap:20px clamp(36px,5vw,72px);
  padding-block:clamp(36px,5vw,56px);
  border-top:1px solid var(--line);
  align-items:baseline;
}
.mvv-item:last-child{border-bottom:1px solid var(--line)}
.mvv-item .en-label{font-size:.9rem}
.mvv-item h3{font-size:clamp(1.25rem,2.4vw,1.6rem);line-height:1.9}
.mvv-item .note{margin-top:12px;color:var(--muted);font-size:.86rem}
.mvv-values{margin-top:16px;display:grid;gap:22px}
.mvv-values li{display:flex;gap:22px;align-items:baseline}
.mvv-values .num{font-family:var(--en);color:var(--brass);font-size:1.1rem}
.mvv-values .v{font-family:var(--serif);font-weight:600;color:var(--ink);font-size:1.1rem;letter-spacing:.06em}

/* ---------- 代表メッセージ ---------- */
.msg-body{max-width:720px}
.msg-body p{font-size:.98rem;line-height:2.3;color:var(--body)}
.msg-body p+p{margin-top:1.8em}
.msg-body .msg-sign{
  margin-top:48px;text-align:right;
  font-family:var(--serif);font-weight:600;color:var(--ink);
  font-size:1rem;letter-spacing:.08em;
}

/* ---------- ニュース ---------- */
.news-list{border-top:1px solid var(--line)}
.news-item{border-bottom:1px solid var(--line)}
.news-item a,.news-item .news-inner{
  display:grid;grid-template-columns:130px 110px 1fr 40px;
  gap:12px clamp(20px,3vw,40px);align-items:baseline;
  padding-block:26px;transition:background .25s ease;
}
.news-item a:hover{background:var(--mist)}
.news-item time{
  font-family:var(--en);font-size:1rem;letter-spacing:.14em;color:var(--ink);
}
.news-item .cat{
  font-size:.72rem;letter-spacing:.14em;color:var(--brass);
  border:1px solid var(--brass-soft);text-align:center;padding:3px 8px;
}
.news-item .t{font-size:.96rem;color:var(--ink);letter-spacing:.04em}

/* ニュース記事本文 */
.article{max-width:760px}
.article .a-head{padding-block:0 40px;border-bottom:1px solid var(--line)}
.article .a-body{padding-top:40px;display:grid;gap:24px;font-size:.97rem}
.article .a-body h2{font-size:1.25rem;margin-top:16px}

/* ---------- CTAバンド ---------- */
.cta-band{
  background:var(--navy);color:#fff;position:relative;overflow:hidden;
}
.cta-band .watermark{
  position:absolute;right:-60px;bottom:-80px;width:380px;opacity:.07;pointer-events:none;
}
.cta-inner{
  position:relative;z-index:1;
  padding-block:var(--space-m);
  display:grid;grid-template-columns:1fr auto;gap:36px;align-items:center;
}
.cta-inner .en-label{color:var(--brass-soft);margin-bottom:20px}
.cta-inner h2{color:#fff;font-size:clamp(1.4rem,3vw,2rem)}
.cta-inner p{margin-top:18px;color:#C6D2DF;font-size:.95rem;max-width:560px}

/* ---------- フォーム ---------- */
.form{display:grid;gap:34px;max-width:680px}
.form-field label{
  display:block;font-family:var(--serif);font-weight:600;font-size:.94rem;
  color:var(--ink);letter-spacing:.08em;margin-bottom:12px;
}
.form-field .req{
  font-family:var(--sans);font-size:.68rem;color:var(--brass);
  border:1px solid var(--brass-soft);padding:1px 8px;margin-left:12px;
  letter-spacing:.14em;vertical-align:2px;
}
.form-field input,.form-field textarea{
  width:100%;padding:15px 18px;
  border:1px solid var(--line-strong);border-radius:0;
  background:var(--paper);color:var(--ink);
  font:inherit;font-size:.98rem;line-height:1.7;
  transition:border-color .25s ease;
  -webkit-appearance:none;appearance:none;
}
.form-field input:focus,.form-field textarea:focus{
  outline:none;border-color:var(--navy);
}
.form-field textarea{min-height:180px;resize:vertical}
.form-note{font-size:.84rem;color:var(--muted)}
.form-note a{color:var(--navy);border-bottom:1px solid var(--line-strong)}
.form-consent{
  display:flex;align-items:center;gap:12px;
  font-size:.92rem;color:var(--ink);cursor:pointer;
}
.form-consent input{
  width:18px;height:18px;flex:none;margin:0;
  accent-color:var(--navy);
}
.form-consent a{color:var(--navy);border-bottom:1px solid var(--line-strong)}
.form-done{
  border:1px solid var(--line);padding:clamp(32px,5vw,48px);max-width:680px;
}
.form-done .dt{
  font-family:var(--serif);font-weight:600;font-size:1.2rem;color:var(--ink);
  display:flex;align-items:center;gap:14px;
}
.form-done .dt::before{
  content:"";width:22px;height:12px;border-left:1.5px solid var(--brass);
  border-bottom:1.5px solid var(--brass);transform:rotate(-45deg) translateY(-4px);
}
.form-done p{margin-top:16px;color:var(--muted);font-size:.94rem}

/* ---------- footer ---------- */
.site-footer{
  background:var(--navy-deep);color:#9FB0C0;position:relative;overflow:hidden;
}
.site-footer .watermark{
  position:absolute;left:-40px;bottom:-110px;width:420px;opacity:.05;pointer-events:none;
}
.footer-inner{
  position:relative;z-index:1;
  padding-block:clamp(56px,8vw,88px) 0;
  display:grid;grid-template-columns:1fr auto;gap:48px clamp(48px,8vw,120px);
}
.f-brand .name{
  font-family:var(--serif);font-weight:700;font-size:1.2rem;color:#fff;letter-spacing:.1em;
}
.f-brand .en{
  font-family:var(--en);font-size:.68rem;letter-spacing:.32em;color:#7E92A6;
  text-transform:uppercase;margin-top:8px;display:block;
}
.f-brand .addr{margin-top:26px;font-size:.85rem;line-height:2.1}
.f-nav{
  display:grid;grid-template-columns:repeat(2,minmax(150px,auto));
  gap:14px clamp(36px,5vw,72px);align-content:start;padding-top:6px;
}
.f-nav a{font-size:.86rem;letter-spacing:.1em;color:#B8C6D4;transition:color .25s ease}
.f-nav a:hover{color:#fff}
.footer-bottom{
  position:relative;z-index:1;
  margin-top:clamp(40px,6vw,64px);
  border-top:1px solid rgba(255,255,255,.12);
  padding-block:22px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 24px;
  font-size:.76rem;letter-spacing:.1em;color:#7E92A6;
}
.footer-bottom a:hover{color:#fff}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s cubic-bezier(.2,.65,.25,1),transform .8s cubic-bezier(.2,.65,.25,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .gnav{
    position:fixed;inset:83px 0 auto 0;z-index:99;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--line);
    padding:8px var(--gutter) 28px;
    transform:translateY(-130%);transition:transform .35s ease;
    box-shadow:0 24px 48px rgba(18,40,63,.08);
  }
  .gnav.open{transform:none}
  .gnav a:not(.btn){padding:16px 2px;border-bottom:1px solid var(--line)}
  .gnav .btn{margin-top:20px;justify-content:center}
  .menu-btn{display:inline-flex}
}
@media (max-width:900px){
  body{font-size:15px}
  .sec-head{grid-template-columns:1fr;gap:24px}
  .split,.split--rev{grid-template-columns:1fr}
  .split--rev .split-copy{order:0}
  .split--rev .split-media{order:1}
  .row-item{grid-template-columns:64px 1fr;grid-template-rows:auto auto}
  .row-item .num{grid-row:1}
  .row-item h3,.row-item h4{grid-column:2;grid-row:1}
  .row-item p{grid-column:2;grid-row:2}
  .feat-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:36px}
  .hero-inner{grid-template-columns:1fr}
  .hero-side{display:none}
  .hero-art{opacity:.35;right:-30%}
  .cta-inner{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
  .co-table .crow{grid-template-columns:1fr}
  .co-table dt{padding-bottom:2px}
  .co-table dd{padding-top:2px;padding-bottom:20px}
  .mvv-item{grid-template-columns:1fr}
  .news-item a,.news-item .news-inner{grid-template-columns:100px 1fr;grid-template-rows:auto auto}
  .news-item time{grid-row:1}
  .news-item .cat{grid-row:1;justify-self:start}
  .news-item .t{grid-column:1/-1}
  .news-item .arr{display:none}
}