:root{
  --navy:#0f1e33; --navy2:#16294a; --amber:#f5a623; --amber-d:#d98a0b;
  --bg:#f6f7fb; --card:#ffffff; --ink:#1c2433; --mut:#667085; --line:#e6e9f0;
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
a{color:inherit;text-decoration:none}
img{max-width:100%}

/* topbar */
.topbar{position:sticky;top:0;z-index:50;background:rgba(15,30,51,.96);backdrop-filter:blur(8px);color:#fff}
.topbar-in{display:flex;align-items:center;gap:20px;height:60px}
.brand{display:flex;align-items:center;gap:10px;margin-right:auto}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;background:var(--amber);color:var(--navy);font-weight:800;font-size:15px}
.brand-name{font-weight:800;font-size:17px;letter-spacing:.5px}
.brand-sub{display:block;font-size:11px;font-weight:400;color:#b9c4d8;letter-spacing:2px}
.nav{display:flex;gap:18px;font-size:14px;color:#dbe3f0}
.nav a:hover{color:var(--amber)}
.lang-btn{background:transparent;border:1px solid #3b4f73;color:#fff;border-radius:8px;padding:6px 12px;font-size:13px;cursor:pointer}
.lang-btn:hover{border-color:var(--amber);color:var(--amber)}

/* hero */
.hero{background:linear-gradient(135deg,var(--navy) 0%,var(--navy2) 60%,#1d3a68 100%);color:#fff;padding:72px 0 64px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(245,166,35,.25),transparent 70%)}
.hero-in{position:relative;z-index:1}
.hero-kicker{display:inline-block;font-size:12px;letter-spacing:3px;color:var(--amber);border:1px solid rgba(245,166,35,.5);border-radius:999px;padding:4px 14px;margin-bottom:18px}
.hero h1{font-size:clamp(28px,5vw,46px);line-height:1.25;margin-bottom:14px}
.hero-sub{color:#c3cede;max-width:560px;margin-bottom:28px;font-size:16px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:36px}
.btn{display:inline-block;padding:12px 26px;border-radius:10px;font-weight:700;font-size:15px;cursor:pointer;border:1px solid transparent}
.btn-primary{background:var(--amber);color:var(--navy)}
.btn-primary:hover{background:var(--amber-d)}
.btn-ghost{border-color:#4a5f86;color:#fff}
.btn-ghost:hover{border-color:var(--amber);color:var(--amber)}
.hero-stats{display:flex;gap:36px}
.stat b{display:block;font-size:26px;color:var(--amber)}
.stat span{font-size:13px;color:#9fb0cc}

/* sections */
.section{padding:64px 0}
.section.alt{background:#fff}
.sec-head{text-align:center;margin-bottom:32px}
.sec-head h2{font-size:28px;margin-bottom:8px}
.sec-head p{color:var(--mut);font-size:14px;max-width:640px;margin:0 auto}

/* filters */
.filters{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:28px}
.chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 18px;font-size:14px;cursor:pointer;color:var(--mut)}
.chip.on{background:var(--navy);border-color:var(--navy);color:#fff;font-weight:700}

/* cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(15,30,51,.12)}
.card-img{aspect-ratio:16/9;background:linear-gradient(135deg,#20365c,#0f1e33);display:flex;align-items:center;justify-content:center;flex-direction:column;gap:8px;color:#8fa2c4}
.card-img svg{width:64px;height:64px;opacity:.85}
.card-img small{font-size:12px;letter-spacing:1px}
.card-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-top{display:flex;justify-content:space-between;align-items:center;gap:8px}
.card-id{font-size:12px;color:var(--mut);background:#f0f2f7;border-radius:6px;padding:2px 8px}
.card-cat{font-size:12px;color:var(--amber-d);font-weight:700}
.card h3{font-size:17px}
.card-note{font-size:13px;color:var(--mut)}
.spec{display:grid;grid-template-columns:1fr 1fr;gap:6px 12px;font-size:13px;background:#f8f9fc;border-radius:10px;padding:12px}
.spec div{display:flex;justify-content:space-between;gap:6px}
.spec dt{color:var(--mut)}
.spec dd{font-weight:600;text-align:right}
.card-foot{margin-top:auto;display:flex;gap:10px;align-items:center;padding-top:6px}
.price{font-size:20px;font-weight:800;color:#c2410c}
.price small{font-size:12px;font-weight:400;color:var(--mut)}
.wa-btn{margin-left:auto;background:#25d366;color:#fff;font-weight:700;font-size:14px;border-radius:10px;padding:10px 18px}
.wa-btn:hover{filter:brightness(.95)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-bottom:32px}
.step{background:var(--bg);border-radius:var(--radius);padding:26px 22px;text-align:center}
.step-n{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;background:var(--navy);color:var(--amber);font-weight:800;font-size:18px;margin-bottom:14px}
.step h3{margin-bottom:8px;font-size:16px}
.step p{font-size:14px;color:var(--mut)}
.center{text-align:center}

/* contact */
.contact-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;text-align:center;display:block}
.contact-card:hover{border-color:var(--amber)}
.cc-icon{font-size:34px}
.contact-card h3{margin:10px 0 6px}
.contact-card p{font-size:14px;color:var(--mut);margin-bottom:10px}
.cc-go{color:var(--amber-d);font-weight:700;font-size:14px}

/* footer */
.footer{background:var(--navy);color:#93a3bf;padding:32px 0;font-size:13px;text-align:center}
.disclaimer{max-width:760px;margin:0 auto 12px;color:#b9c4d8}
.copy{font-size:12px}

@media(max-width:640px){
  .nav{display:none}
  .hero{padding:52px 0 44px}
  .hero-stats{gap:24px}
  .section{padding:44px 0}
}