:root{
    --navy:#21406E;
    --navy-deep:#132339;
    --blue:#268FCE;
    --sky:#6EC2ED;
    --paper:#F7F6F2;
    --paper-dim:#EFEDE6;
    --ink:#16202B;
    --ink-soft:#4A5866;
    --line:#DBD8CE;
    --line-dark:rgba(255,255,255,0.16);
    --stitch:#B23A2E;
    --serif:'Zen Old Mincho', serif;
    --sans:'Zen Kaku Gothic New', sans-serif;
    --mono:'IBM Plex Mono', monospace;
  }

  *{box-sizing:border-box; margin:0; padding:0;}

  html{scroll-behavior:smooth;}

  body{
    font-family:var(--sans);
    color:var(--ink);
    background:var(--paper);
    line-height:1.9;
    -webkit-font-smoothing:antialiased;
  }

  img{max-width:100%; display:block;}

  a{color:inherit;}

  .wrap{
    max-width:1080px;
    margin:0 auto;
    padding:0 32px;
  }

  /* ---------- Header ---------- */
  header{
    position:fixed;
    top:0; left:0; right:0;
    z-index:100;
    background:rgba(247,246,242,0.86);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    max-width:1080px;
    margin:0 auto;
    padding:18px 32px;
    display:flex;
    align-items:center;
    justify-content:space-between;
  }
  .brand{
    display:flex;
    align-items:center;
    gap:10px;
    font-family:var(--mono);
    font-size:14px;
    letter-spacing:0.08em;
    color:var(--navy);
    text-decoration:none;
    font-weight:600;
  }
  .brand-mark{
    height:22px;
    width:auto;
    flex-shrink:0;
  }
  nav{display:flex; gap:28px;}
  nav a{
    font-family:var(--mono);
    font-size:12px;
    letter-spacing:0.06em;
    text-decoration:none;
    color:var(--ink-soft);
    text-transform:uppercase;
    transition:color .2s;
  }
  nav a:hover{color:var(--blue);}

  .lang-switch{
    display:flex;
    gap:2px;
    font-family:var(--mono);
    font-size:11px;
    letter-spacing:0.05em;
    margin-left:8px;
  }
  .lang-switch a{
    padding:4px 9px;
    text-decoration:none;
    color:var(--ink-soft);
    border:1px solid var(--line);
  }
  .lang-switch a.active{
    background:var(--navy);
    color:#fff;
    border-color:var(--navy);
  }
  .lang-switch a:first-child{border-radius:3px 0 0 3px;}
  .lang-switch a:last-child{border-radius:0 3px 3px 0; border-left:none;}

  @media (max-width:640px){
    nav{display:none;}
  }

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    background:var(--navy);
    background:linear-gradient(160deg, var(--navy-deep) 0%, var(--navy) 55%, #123a63 100%);
    color:#fff;
    padding:180px 32px 140px;
    overflow:hidden;
  }
  .hero-inner{
    max-width:1080px;
    margin:0 auto;
    position:relative;
    z-index:2;
  }
  .eyebrow{
    font-family:var(--mono);
    font-size:12px;
    letter-spacing:0.18em;
    text-transform:uppercase;
    color:var(--sky);
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:28px;
  }
  .eyebrow::before{
    content:'';
    width:28px; height:1px;
    background:var(--sky);
    display:inline-block;
  }
  .hero h1{
    font-family:var(--serif);
    font-weight:600;
    font-size:clamp(30px, 5vw, 52px);
    line-height:1.55;
    max-width:820px;
    letter-spacing:0.02em;
  }
  .hero .en-sub{
    font-family:var(--mono);
    font-size:13px;
    color:rgba(255,255,255,0.55);
    margin-top:22px;
    letter-spacing:0.03em;
  }
  .hero p.lead{
    margin-top:40px;
    max-width:640px;
    font-size:15.5px;
    color:rgba(255,255,255,0.82);
    line-height:2;
  }

  /* flight path svg */
  .flight-path{
    position:absolute;
    right:-40px;
    bottom:-20px;
    width:520px;
    max-width:60vw;
    z-index:1;
    opacity:0.9;
  }
  .flight-path .dash{
    stroke-dasharray:4 7;
    animation:dashmove 26s linear infinite;
  }
  @keyframes dashmove{
    to{stroke-dashoffset:-500;}
  }
  .flight-path .dot{fill:var(--sky);}
  .flight-path text{
    font-family:var(--mono);
    font-size:10px;
    fill:rgba(255,255,255,0.55);
    letter-spacing:0.08em;
  }

  @media (max-width:640px){
    .hero{padding:140px 24px 90px;}
    .flight-path{display:none;}
  }

  /* ---------- Section shell ---------- */
  section{padding:104px 0;}
  section.tight{padding:80px 0;}
  .section-head{
    margin-bottom:56px;
  }
  .section-head .eyebrow{color:var(--blue);}
  .section-head .eyebrow::before{background:var(--blue);}
  .section-head h2{
    font-family:var(--serif);
    font-size:clamp(24px,3vw,32px);
    font-weight:600;
    color:var(--navy);
  }

  /* ---------- Mission ---------- */
  .mission{
    background:var(--paper-dim);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .mission-quote{
    font-family:var(--serif);
    font-size:clamp(19px,2.4vw,25px);
    line-height:2.05;
    color:var(--navy);
    max-width:760px;
  }
  .mission-quote .accent{color:var(--blue);}
  .mission-tag{
    font-family:var(--mono);
    font-size:12px;
    color:var(--ink-soft);
    letter-spacing:0.05em;
    margin-bottom:20px;
    display:block;
  }

  /* ---------- Services intro ---------- */
  .services-intro{
    max-width:700px;
    font-size:15.5px;
    color:var(--ink-soft);
    margin-bottom:64px;
    line-height:2;
  }
  .services-intro strong{
    color:var(--navy);
    font-weight:700;
    border-bottom:1px solid var(--stitch);
    padding-bottom:1px;
  }

  /* ---------- Timeline ---------- */
  .timeline{
    position:relative;
    padding-left:36px;
  }
  .timeline::before{
    content:'';
    position:absolute;
    left:7px; top:6px; bottom:6px;
    width:1px;
    background:var(--line);
  }
  .t-node{
    position:relative;
    margin-bottom:58px;
  }
  .t-node:last-child{margin-bottom:0;}
  .t-node::before{
    content:'';
    position:absolute;
    left:-36px; top:6px;
    width:15px; height:15px;
    border-radius:50%;
    background:var(--paper);
    border:2px solid var(--blue);
  }
  .t-node h3{
    font-family:var(--sans);
    font-weight:700;
    font-size:18px;
    color:var(--navy);
    margin-bottom:6px;
  }
  .t-node .t-label{
    font-family:var(--mono);
    font-size:11px;
    color:var(--sky-text, var(--blue));
    letter-spacing:0.08em;
    display:block;
    margin-bottom:10px;
  }
  .t-node ul{
    list-style:none;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:8px 28px;
    margin-top:16px;
  }
  .t-node li{
    font-size:14.5px;
    color:var(--ink-soft);
    position:relative;
    padding-left:16px;
    line-height:1.7;
  }
  .t-node li::before{
    content:'—';
    position:absolute;
    left:0;
    color:var(--blue);
  }
  .t-note{
    font-family:var(--mono);
    font-size:11.5px;
    color:#8b8578;
    margin-top:18px;
    font-style:italic;
  }
  @media (max-width:640px){
    .t-node ul{grid-template-columns:1fr;}
  }

  /* team chips */
  .team-block{
    margin-top:64px;
    padding-top:48px;
    border-top:1px solid var(--line);
  }
  .team-block h3{
    font-family:var(--sans);
    font-weight:700;
    font-size:17px;
    color:var(--navy);
    margin-bottom:12px;
  }
  .team-block p{
    font-size:14.5px;
    color:var(--ink-soft);
    max-width:600px;
    margin-bottom:22px;
  }
  .chips{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
  }
  .chip{
    font-family:var(--mono);
    font-size:12px;
    letter-spacing:0.03em;
    color:var(--navy);
    background:#fff;
    border:1px solid var(--line);
    padding:8px 16px;
    border-radius:100px;
  }

  /* post career card */
  .card{
    margin-top:64px;
    padding-top:48px;
    border-top:1px solid var(--line);
  }
  .card h3{
    font-family:var(--sans);
    font-weight:700;
    font-size:18px;
    color:var(--navy);
    margin-bottom:18px;
  }
  .card ul{list-style:none;}
  .card li{
    font-size:14.5px;
    color:var(--ink-soft);
    position:relative;
    padding-left:18px;
    margin-bottom:10px;
    line-height:1.75;
  }
  .card li::before{
    content:'—';
    position:absolute;
    left:0;
    color:var(--blue);
  }

  /* ---------- Partner ---------- */
  .partner{
    background:var(--paper-dim);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .partner-card{
    display:flex;
    gap:36px;
    align-items:flex-start;
    background:#fff;
    border:1px solid var(--line);
    padding:36px;
  }
  .partner-mark{
    width:150px;
    flex-shrink:0;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:8px 4px;
  }
  .partner-mark img{
    width:100%;
    height:auto;
  }
  .partner-card h3{
    font-family:var(--sans);
    font-weight:700;
    font-size:17px;
    color:var(--navy);
    margin-bottom:10px;
  }
  .partner-card p{
    font-size:14.5px;
    color:var(--ink-soft);
    max-width:560px;
  }
  @media (max-width:640px){
    .partner-card{flex-direction:column;}
  }

  /* ---------- President ---------- */
  .president{
    display:grid;
    grid-template-columns:200px 1fr;
    gap:56px;
    align-items:start;
  }
  .president-photo{
    width:200px; height:240px;
    background:var(--navy);
    position:relative;
    overflow:hidden;
  }
  .president-photo svg{
    position:absolute;
    bottom:0; left:50%;
    transform:translateX(-50%);
    width:150px;
  }
  .president h3{
    font-family:var(--serif);
    font-size:22px;
    color:var(--navy);
    margin-bottom:2px;
  }
  .president .role{
    font-family:var(--mono);
    font-size:12px;
    color:var(--ink-soft);
    letter-spacing:0.04em;
    margin-bottom:24px;
    display:block;
  }
  .president p{
    font-size:14.5px;
    color:var(--ink-soft);
    margin-bottom:16px;
    max-width:600px;
  }
  @media (max-width:640px){
    .president{grid-template-columns:1fr;}
    .president-photo{width:140px; height:168px;}
  }

  /* ---------- Company profile (dossier) ---------- */
  .dossier{
    background:var(--navy);
    color:#fff;
  }
  .dossier .section-head .eyebrow{color:var(--sky);}
  .dossier .section-head .eyebrow::before{background:var(--sky);}
  .dossier .section-head h2{color:#fff;}
  .dossier-table{
    border-top:1px solid var(--line-dark);
  }
  .d-row{
    display:grid;
    grid-template-columns:180px 1fr;
    padding:18px 0;
    border-bottom:1px solid var(--line-dark);
    gap:24px;
  }
  .d-row .k{
    font-family:var(--mono);
    font-size:12px;
    color:var(--sky);
    letter-spacing:0.06em;
    text-transform:uppercase;
  }
  .d-row .v{
    font-size:14.5px;
    color:rgba(255,255,255,0.88);
    line-height:1.8;
  }
  .d-row .v a{
    color:#fff;
    text-decoration:underline;
    text-decoration-color:var(--sky);
    text-underline-offset:3px;
  }
  @media (max-width:640px){
    .d-row{grid-template-columns:1fr;}
  }

  /* ---------- Footer ---------- */
  footer{
    padding:64px 32px 40px;
    text-align:center;
  }
  footer img{
    height:64px;
    width:auto;
    margin:0 auto 20px;
    opacity:0.92;
  }
  footer .fmark{
    font-family:var(--mono);
    font-size:11px;
    color:var(--ink-soft);
    letter-spacing:0.08em;
  }