:root{
    --navy:#0A1247;
    --navy-2:#131C5C;
    --tan:#D4B27F;
    --tan-2:#C09A61;
    --ink:#0E1430;
    --muted:#5B6478;
    --line:#E7E5DF;
    --bg:#FFFFFF;
    --bg-soft:#F7F6F2;
    --max:1160px;
    --r:14px;
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    margin:0;background:var(--bg);color:var(--ink);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
    font-size:16px;line-height:1.75;letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;font-weight:600}
  p{margin:0}
  .wrap{width:min(100% - 48px,var(--max));margin-inline:auto}
  @media(max-width:640px){.wrap{width:calc(100% - 40px)}}

  /* ---------- nav ---------- */
  .nav{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.86);
    backdrop-filter:saturate(180%) blur(14px);
    -webkit-backdrop-filter:saturate(180%) blur(14px);
    border-bottom:1px solid transparent;transition:border-color .3s var(--ease);
  }
  .nav.scrolled{border-bottom-color:var(--line)}
  .nav-inner{display:flex;align-items:center;justify-content:space-between;height:76px}
  .brand img{height:34px;width:auto}
  .nav-links{display:flex;align-items:center;gap:34px}
  .nav-links a{font-size:14.5px;color:#3A4257;transition:color .2s}
  .nav-links a:hover{color:var(--navy)}
  .nav-cta{
    padding:9px 20px;border-radius:100px;background:var(--navy);color:#fff;font-size:14.5px;
    transition:background .2s var(--ease),transform .2s var(--ease);
  }
  .nav-cta:hover{background:var(--navy-2);transform:translateY(-1px)}
  .menu-btn{display:none}
  @media(max-width:860px){
    .nav-links{
      position:fixed;inset:76px 0 auto 0;background:#fff;flex-direction:column;align-items:flex-start;
      gap:0;padding:8px 24px 20px;border-bottom:1px solid var(--line);
      transform:translateY(-120%);transition:transform .35s var(--ease);
    }
    .nav-links.open{transform:translateY(0)}
    .nav-links a{width:100%;padding:14px 0;border-bottom:1px solid #F1EFE9}
    .nav-links a:last-child{border:0}
    .nav-links .nav-cta{margin-top:16px;text-align:center;width:100%}
    .menu-btn{display:inline-flex;flex-direction:column;gap:5px;padding:10px;background:none;border:0;cursor:pointer}
    .menu-btn span{display:block;width:20px;height:1.5px;background:var(--navy);transition:transform .3s var(--ease),opacity .3s}
    .menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
    .menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
    .menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
  }

  /* ---------- hero ---------- */
  .hero{position:relative;overflow:hidden;padding:clamp(72px,11vw,132px) 0 clamp(64px,9vw,110px)}
  .hero::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:
      radial-gradient(900px 460px at 82% -8%,rgba(212,178,127,.20),transparent 62%),
      radial-gradient(760px 420px at 6% 8%,rgba(10,18,71,.07),transparent 60%);
  }
  .hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
    background-image:linear-gradient(to right,rgba(10,18,71,.055) 1px,transparent 1px),
                     linear-gradient(to bottom,rgba(10,18,71,.055) 1px,transparent 1px);
    background-size:72px 72px;
    mask-image:radial-gradient(circle at 50% 20%,#000 10%,transparent 72%);
    -webkit-mask-image:radial-gradient(circle at 50% 20%,#000 10%,transparent 72%);
  }
  .hero-inner{position:relative;max-width:820px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.14em;
    color:var(--muted);text-transform:uppercase;margin-bottom:26px;
  }
  .eyebrow::before{content:"";width:26px;height:1px;background:var(--tan)}
  .hero h1{
    font-size:clamp(34px,5.4vw,60px);font-weight:600;letter-spacing:-.02em;line-height:1.18;
    color:var(--navy);
  }
  .hero h1 em{font-style:normal;color:var(--tan-2);position:relative;white-space:nowrap}
  .hero p.lead{
    margin-top:26px;font-size:clamp(16px,1.6vw,19px);line-height:1.85;color:#4A5268;max-width:640px;
  }
  .actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:40px}
  .btn{
    display:inline-flex;align-items:center;gap:10px;padding:14px 28px;border-radius:100px;
    font-size:15px;transition:all .25s var(--ease);border:1px solid transparent;
  }
  .btn-primary{background:var(--navy);color:#fff;box-shadow:0 10px 24px -14px rgba(10,18,71,.7)}
  .btn-primary:hover{background:var(--navy-2);transform:translateY(-2px);box-shadow:0 16px 30px -16px rgba(10,18,71,.75)}
  .btn-ghost{border-color:#D8D5CC;color:var(--navy);background:rgba(255,255,255,.6)}
  .btn-ghost:hover{border-color:var(--navy);transform:translateY(-2px)}
  .btn svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.8;transition:transform .25s var(--ease)}
  .btn:hover svg{transform:translateX(3px)}

  .hero-facts{
    display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;
    margin-top:clamp(56px,7vw,88px);border-top:1px solid var(--line);
  }
  .fact{padding:26px 26px 0 0}
  .fact + .fact{border-left:1px solid var(--line);padding-left:26px}
  .fact b{display:block;font-size:clamp(26px,3.2vw,36px);font-weight:600;color:var(--navy);letter-spacing:-.02em;line-height:1.1}
  .fact b span{font-size:16px;color:var(--tan-2);margin-left:2px}
  .fact small{display:block;margin-top:10px;color:var(--muted);font-size:13.5px;line-height:1.6}
  @media(max-width:760px){
    .hero-facts{grid-template-columns:1fr;border-top:0;margin-top:48px;gap:0}
    .fact{padding:20px 0;border-top:1px solid var(--line)}
    .fact + .fact{border-left:0;padding-left:0}
  }

  /* ---------- section shell ---------- */
  section{position:relative}
  .sec{padding:clamp(72px,9vw,116px) 0}
  .sec-soft{background:var(--bg-soft)}
  .sec-head{max-width:680px;margin-bottom:clamp(40px,5vw,64px)}
  .sec-label{font-size:13px;letter-spacing:.16em;color:var(--tan-2);font-weight:600;text-transform:uppercase;margin-bottom:16px}
  .sec-head h2{font-size:clamp(26px,3.4vw,40px);color:var(--navy)}
  .sec-head p{margin-top:18px;color:#4A5268;font-size:16.5px;line-height:1.8}

  /* ---------- products ---------- */
  .products{display:grid;gap:20px}
  .card{
    position:relative;display:grid;grid-template-columns:88px 1fr auto;gap:28px;align-items:start;
    padding:clamp(26px,3.4vw,38px);border:1px solid var(--line);border-radius:var(--r);
    background:#fff;transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
  }
  .card:hover{border-color:#CFC9B9;transform:translateY(-3px);box-shadow:0 22px 44px -30px rgba(10,18,71,.5)}
  .card .num{font-size:13px;letter-spacing:.1em;color:var(--tan-2);font-weight:600;padding-top:6px}
  .card h3{font-size:clamp(20px,2.2vw,25px);color:var(--navy);display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
  .card h3 small{font-size:13px;font-weight:400;color:var(--muted);letter-spacing:.06em}
  .card p{margin-top:14px;color:#4A5268;max-width:62ch}
  .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
  .tag{font-size:12.5px;color:#3A4257;background:#F4F2EC;border-radius:100px;padding:5px 12px;line-height:1.6}
  .card .arrow{width:38px;height:38px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;flex:none;transition:all .3s var(--ease)}
  .card .arrow svg{width:14px;height:14px;stroke:var(--navy);fill:none;stroke-width:1.6}
  .card:hover .arrow{background:var(--navy);border-color:var(--navy)}
  .card:hover .arrow svg{stroke:#fff}
  @media(max-width:760px){
    .card{grid-template-columns:1fr;gap:14px}
    .card .num{padding-top:0}
    .card .arrow{display:none}
  }

  /* ---------- dark band ---------- */
  .band{background:var(--navy);color:#fff;position:relative;overflow:hidden}
  .band::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:radial-gradient(700px 380px at 88% 0%,rgba(212,178,127,.16),transparent 60%);
  }
  .band .sec-label{color:var(--tan)}
  .band .sec-head h2{color:#fff}
  .band .sec-head p{color:#B9BFD6}
  .layers{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.12);border-radius:var(--r);overflow:hidden;position:relative}
  .layer{background:var(--navy);padding:clamp(22px,2.6vw,32px);transition:background .3s var(--ease)}
  .layer:hover{background:var(--navy-2)}
  .layer b{display:block;font-size:15.5px;color:#fff;margin-bottom:10px;letter-spacing:.02em}
  .layer span{font-size:13.5px;color:#A8AFC8;line-height:1.7;display:block}
  .layer i{display:block;font-style:normal;font-size:11.5px;color:var(--tan);letter-spacing:.14em;margin-bottom:18px}
  @media(max-width:900px){.layers{grid-template-columns:repeat(2,1fr)}}
  @media(max-width:560px){.layers{grid-template-columns:1fr}}

  .points{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(28px,4vw,52px);margin-top:clamp(56px,6vw,76px);position:relative}
  .point h4{font-size:17px;color:#fff;margin-bottom:12px;display:flex;align-items:center;gap:10px}
  .point h4::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--tan);flex:none}
  .point p{color:#A8AFC8;font-size:14.5px;line-height:1.8}
  @media(max-width:760px){.points{grid-template-columns:1fr;gap:28px}}

  /* ---------- about ---------- */
  .about{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(36px,6vw,80px);align-items:start}
  .about h2{font-size:clamp(26px,3.2vw,38px);color:var(--navy)}
  .about p{margin-top:20px;color:#4A5268;font-size:16.5px}
  .about-facts{border-top:1px solid var(--line)}
  .afact{display:flex;justify-content:space-between;gap:24px;padding:18px 0;border-bottom:1px solid var(--line);font-size:15px}
  .afact dt{color:var(--muted);flex:none}
  .afact dd{margin:0;color:var(--navy);text-align:right;font-weight:500}
  @media(max-width:820px){.about{grid-template-columns:1fr}}

  /* ---------- contact ---------- */
  .contact{
    border:1px solid var(--line);border-radius:20px;padding:clamp(32px,4.6vw,58px);
    background:linear-gradient(135deg,#FFFFFF 0%,#FAF8F3 100%);
    display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between;
  }
  .contact h2{font-size:clamp(24px,3vw,34px);color:var(--navy)}
  .contact p{margin-top:12px;color:#4A5268;max-width:46ch}
  .contact .btn{flex:none}

  /* ---------- footer ---------- */
  footer{background:var(--navy);color:#8F97B4;padding:clamp(48px,6vw,68px) 0 34px;font-size:13.5px}
  .foot-top{display:flex;flex-wrap:wrap;gap:32px;justify-content:space-between;align-items:flex-start;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
  .foot-brand img{height:36px;width:auto;filter:brightness(0) invert(1);opacity:.95}
  .foot-brand p{margin-top:16px;max-width:34ch;line-height:1.8}
  .foot-cols{display:flex;gap:clamp(36px,6vw,80px);flex-wrap:wrap}
  .foot-col b{display:block;color:#fff;font-size:13.5px;margin-bottom:14px;font-weight:500}
  .foot-col a{display:block;padding:5px 0;transition:color .2s}
  .foot-col a:hover{color:#fff}
  .foot-bottom{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;padding-top:26px}
  .foot-bottom span{line-height:1.7}
  .icp{display:none}

  /* reveal */
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
  .reveal.in{opacity:1;transform:none}
  @media(prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    .reveal{opacity:1;transform:none;transition:none}
    *{animation-duration:.001ms!important;transition-duration:.001ms!important}
  }