:root{
  --navy:#061f3a;
  --navy-deep:#051a30;
  --blue:#087f9a;
  --blue-light:#0ea5be;
  --gold:#c79b55;
  --gray:#f6f8fa;
  --ink:#1f2937;
  --muted:#6b7280;
  --line:#e5e7eb;
  --radius:16px;
  --shadow:0 8px 26px rgba(6,31,58,.07);
  --shadow-hover:0 16px 40px rgba(6,31,58,.12);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Noto Sans JP","Noto Sans SC","PingFang SC","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic UI","Yu Gothic","Microsoft YaHei","微软雅黑",system-ui,-apple-system,Arial,sans-serif;
  color:var(--ink);
  line-height:1.85;
  background:#fff;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  font-feature-settings:"palt";
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* header */
header{
  position:fixed;top:0;left:0;right:0;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(8px);
  -webkit-backdrop-filter:saturate(180%) blur(8px);
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 6%;z-index:100;
  box-shadow:0 1px 14px rgba(0,0,0,.06);
  flex-wrap:wrap;gap:8px;
}
.logo{font-size:26px;font-weight:800;letter-spacing:4px;color:var(--navy);line-height:1.1}
.logo small{display:block;font-size:10px;letter-spacing:3px;color:var(--blue);font-weight:600;margin-top:2px}
.right{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
nav.main{display:flex;flex-wrap:wrap;align-items:center}
nav.main a{margin:0 9px;padding:6px 2px;color:#333;font-size:14px;position:relative;font-weight:500;transition:color .2s}
nav.main a:hover{color:var(--blue)}
nav.main a.active{color:var(--gold);font-weight:700}
nav.main a.active::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;background:var(--gold);border-radius:2px}
.lang a{font-size:13px;margin:0 6px;color:#666;transition:color .2s}
.lang a:hover{color:var(--navy)}
.lang a.active{color:var(--navy);font-weight:700}

/* hero */
.hero{
  margin-top:118px;min-height:80vh;
  display:flex;align-items:center;padding:0 10%;
  color:#fff;position:relative;overflow:hidden;
  background-color:var(--navy);
  background-image:
    linear-gradient(120deg,rgba(6,31,58,.70) 0%,rgba(8,127,154,.35) 100%),
    url('../assets/hero.svg');
  background-repeat:no-repeat;
  background-position:center;
  background-size:cover;
}
.hero::after{content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse at 82% 16%,rgba(199,155,85,.22),transparent 50%);
  pointer-events:none}
.hero>div{position:relative;z-index:1;max-width:900px}
.hero h1{font-size:60px;line-height:1.3;font-weight:800;letter-spacing:1px}
.hero p{font-size:20px;margin-top:24px;max-width:680px;opacity:.96}
.btn{display:inline-block;margin-top:36px;padding:15px 44px;background:#fff;color:var(--navy);
  border-radius:40px;font-weight:700;transition:.25s;box-shadow:0 8px 24px rgba(0,0,0,.18)}
.btn:hover{transform:translateY(-2px);background:var(--gold);color:#fff}

/* sections */
section{padding:96px 10%}
.section-alt{background:var(--gray)}
.title{text-align:center;margin-bottom:50px}
.title h2{font-size:38px;color:var(--navy);letter-spacing:1px;font-weight:800}
.title p{color:var(--muted);margin-top:10px;font-size:16px}

.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.card{padding:34px;background:#fff;border-radius:var(--radius);
  box-shadow:var(--shadow);border-top:4px solid var(--gold);transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.card h3{color:var(--navy);font-size:20px;margin-bottom:10px;font-weight:700}
.card .num{display:inline-block;color:var(--gold);font-weight:800;font-size:15px;margin-bottom:8px;letter-spacing:1px}
.card ul{margin:12px 0 0 18px;color:#555}
.card ul li{margin:6px 0}

.company{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.company .card{border-top:none}
.dl{display:grid;grid-template-columns:auto 1fr;gap:10px 18px;margin-top:6px}
.dl dt{font-weight:700;color:var(--navy);white-space:nowrap}
.dl dd{color:var(--ink)}

.flow{display:flex;justify-content:center;flex-wrap:wrap;gap:16px}
.flow>div{background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;
  padding:22px 30px;border-radius:14px;min-width:150px;text-align:center;
  font-weight:700;box-shadow:0 8px 20px rgba(0,0,0,.12)}

.cta{background:linear-gradient(120deg,var(--navy),var(--blue));color:#fff;text-align:center}
.cta h2{color:#fff}
.cta p{max-width:640px;margin:0 auto;opacity:.96}

/* intro (公司简介突出段落) */
.intro{
  max-width:820px;margin:0 auto 44px;text-align:center;color:var(--ink);
  font-size:17px;line-height:2;background:#fff;padding:30px 40px;
  border-radius:var(--radius);box-shadow:var(--shadow);border-left:4px solid var(--gold);
}

.info-box{background:#fff;border-radius:var(--radius);padding:30px;
  box-shadow:var(--shadow);max-width:760px;margin:0 auto;color:#444}
.info-box .big{font-size:18px;color:var(--navy);font-weight:700}
.info-box p{margin:8px 0}

.contact{background:var(--navy);color:#fff}
.contact h2{color:#fff}
.form{background:#fff;color:#333;padding:34px;border-radius:var(--radius);
  margin:28px auto 0;max-width:760px}
.form label{display:block;font-weight:700;margin:14px 0 6px;color:var(--navy)}
.form input,.form textarea,.form select{width:100%;padding:12px 14px;
  border:1px solid #d9dee4;border-radius:10px;font-size:15px;
  font-family:inherit;background:#fafbfc;color:var(--ink)}
.form input:focus,.form textarea:focus,.form select:focus{
  outline:none;border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px rgba(8,127,154,.12)}
.form textarea{resize:vertical;min-height:120px}
.btn-submit{margin-top:22px;width:100%;padding:15px;border:none;border-radius:40px;
  background:var(--gold);color:#fff;font-weight:700;font-size:16px;cursor:pointer;transition:.25s}
.btn-submit:hover{background:var(--blue)}

/* footer — 修复布局窜了：明确三列、min-width:0 防溢出、fnav 链接强制 block */
footer{
  background:linear-gradient(180deg,#0c1626 0%,#07101d 100%);
  color:#cfd6e0;padding:58px 10% 26px;
}
.foot{
  display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:40px;
  max-width:1200px;margin:0 auto;
}
.foot>div{min-width:0}
.flogo{font-size:22px;font-weight:800;color:#fff;letter-spacing:2px}
footer h4{color:var(--gold);margin-bottom:14px;font-size:14px;letter-spacing:1px;font-weight:700}
footer p{color:#aeb8c8;font-size:14px;line-height:1.9;word-break:break-word}
nav.fnav{display:block}
nav.fnav a{
  display:block;color:#cfd6e0;margin:6px 0;font-size:14px;transition:.2s;
}
nav.fnav a:hover{color:#fff;transform:translateX(2px)}
.copy{text-align:center;margin:38px auto 0;font-size:13px;color:#8a94a6;
  border-top:1px solid #1c2740;padding-top:20px;max-width:1200px}

@media(max-width:900px){
  header{flex-direction:column;padding:14px 4%;text-align:center}
  .right{justify-content:center}
  nav.main a{margin:4px 8px}
  .hero{margin-top:160px;padding:0 6%}
  .hero h1{font-size:32px}
  .hero p{font-size:16px}
  section{padding:64px 6%}
  .title h2{font-size:28px}
  .grid,.company,.foot{grid-template-columns:1fr;gap:24px}
  .flow{display:block}
  .flow>div{margin:10px 0}
  .intro{padding:24px 20px;font-size:15px}
}