:root{
  --nav:#050a14; --nav2:#0b1220; --blue:#005bac; --blue2:#09a2e8; --cyan:#9de5ff;
  --text:#101828; --muted:#667085; --bg:#f5f8fc; --card:#fff; --line:#d8e4f2;
  --shadow:0 18px 48px rgba(16,24,40,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);font-family:Arial,"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",sans-serif;color:var(--text);-webkit-text-size-adjust:100%}
a{text-decoration:none;color:inherit}
.site-header{height:78px;background:linear-gradient(90deg,#030711,#0a1120 62%,#061c36);position:sticky;top:0;z-index:50;border-bottom:1px solid rgba(255,255,255,.08);backdrop-filter:blur(16px)}
.navbar{max-width:1440px;margin:0 auto;height:78px;display:flex;align-items:center;justify-content:space-between;padding:0 44px;gap:26px}
.brand{display:flex;align-items:center;gap:14px;color:#fff;min-width:240px}
.foton-mark{width:50px;height:50px;border:2.6px solid rgba(255,255,255,.96);border-radius:50%;position:relative;flex:none}
.foton-mark:before,.foton-mark:after{content:"";position:absolute;transform:skewX(-28deg);background:#fff;border-radius:5px}
.foton-mark:before{width:16px;height:30px;left:14px;top:10px;box-shadow:18px 0 0 #fff}
.foton-mark:after{width:14px;height:30px;left:34px;top:10px}
.brand-text{line-height:1}
.brand-text .en{font-size:29px;letter-spacing:5px;font-weight:900}
.brand-text .cn{font-size:14px;letter-spacing:4px;font-weight:700;margin-top:4px;color:#e9f3ff}
.navlinks{display:flex;align-items:center;gap:38px;color:#fff;font-size:16px;white-space:nowrap}
.navlinks a{opacity:.9;position:relative;padding:29px 0}
.navlinks a:after{content:"";position:absolute;left:0;right:0;bottom:18px;height:2px;background:linear-gradient(90deg,var(--blue2),#fff);transform:scaleX(0);transform-origin:center;transition:.2s}
.navlinks a:hover{opacity:1}.navlinks a:hover:after{transform:scaleX(1)}
.nav-actions{display:flex;gap:14px;color:#fff;align-items:center}.circle{width:28px;height:28px;border:1px solid rgba(255,255,255,.6);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:13px}
.menu-btn{display:none;color:#fff;font-size:28px}
.hero{position:relative;min-height:690px;overflow:hidden;background:#061527}
.hero-bg{position:absolute;inset:0;background:center/cover no-repeat;transform:scale(1.01)}
.hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.48),rgba(0,25,65,.12) 48%,rgba(0,28,74,.68))}
.hero-inner{position:relative;z-index:2;max-width:1440px;margin:0 auto;min-height:690px;padding:110px 44px 76px;display:flex;align-items:center;justify-content:flex-end;text-align:right;color:white}
.hero-copy{max-width:760px}
.hero-kicker{font-size:14px;letter-spacing:4px;text-transform:uppercase;color:#bfe7ff;font-weight:800;margin-bottom:18px}
.hero-title{font-size:clamp(42px,6vw,78px);font-weight:400;line-height:1.08;margin:0 0 22px;letter-spacing:1px}
.hero-line{width:410px;height:1px;background:rgba(255,255,255,.78);margin:0 0 30px auto}
.hero-sub{font-size:22px;line-height:1.75;color:#e9f5ff;margin:0 0 30px}
.hero-desc{font-size:16px;line-height:1.9;color:#d7e9ff;margin:0 0 46px;max-width:660px;margin-left:auto}
.hero-buttons{display:flex;gap:16px;justify-content:flex-end;flex-wrap:wrap}
.hero-button{min-width:176px;border:1px solid rgba(255,255,255,.78);border-radius:14px;padding:16px 26px;color:#fff;background:rgba(255,255,255,.06);display:inline-flex;align-items:center;justify-content:center;gap:14px;font-size:17px;transition:.2s}
.hero-button.primary{background:rgba(0,91,172,.56);border-color:rgba(157,229,255,.86)}
.hero-button:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.container{max-width:1280px;margin:0 auto;padding:70px 34px}
.overlap{margin-top:-62px;position:relative;z-index:5}
.info-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-bottom:48px}
.info{background:rgba(255,255,255,.92);border:1px solid rgba(216,228,242,.9);border-radius:24px;padding:26px 28px;box-shadow:var(--shadow);backdrop-filter:blur(14px)}
.info strong{display:block;color:var(--blue);font-size:30px;margin-bottom:8px}.info span{color:var(--muted);line-height:1.65}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:32px}
.kicker{color:var(--blue);font-weight:900;font-size:13px;letter-spacing:3px;text-transform:uppercase}
.section-title{font-size:42px;line-height:1.2;font-weight:500;margin:10px 0 0;color:#152033}
.section-desc{max-width:640px;margin:0;color:var(--muted);font-size:16px;line-height:1.8}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{position:relative;min-height:330px;border-radius:28px;overflow:hidden;box-shadow:var(--shadow);background:#071629;transition:.25s;border:1px solid rgba(255,255,255,.24)}
.card:hover{transform:translateY(-6px);box-shadow:0 24px 56px rgba(16,24,40,.18)}
.card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:.35s}
.card:hover img{transform:scale(1.045)}
.card:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.04),rgba(0,14,36,.82))}
.card-body{position:absolute;z-index:2;left:30px;right:30px;bottom:28px;color:#fff}
.card-tag{font-size:12px;letter-spacing:2.5px;text-transform:uppercase;color:#bde6ff;font-weight:900;margin-bottom:10px}
.card h3{font-size:34px;font-weight:400;margin:0 0 12px}.card p{font-size:15.5px;line-height:1.7;color:#dfedff;margin:0}
.card-link{margin-top:24px;display:inline-flex;border:1px solid rgba(255,255,255,.74);border-radius:12px;padding:11px 20px;gap:12px;align-items:center;color:#fff}
.breadcrumb{font-size:14px;color:#667085;margin-bottom:28px}.breadcrumb a{color:var(--blue);font-weight:800}
.panel{background:#fff;border:1px solid var(--line);border-radius:30px;padding:36px;box-shadow:0 18px 48px rgba(16,24,40,.09)}
.cert-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.cert-item{display:flex;align-items:center;justify-content:space-between;gap:18px;background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid var(--line);border-radius:22px;padding:22px;transition:.2s}
.cert-item:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(16,24,40,.12);border-color:#94c4ed}
.cert-left{display:flex;align-items:center;gap:16px;min-width:0}
.cert-no{width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,#e9f5ff,#d8edff);color:var(--blue);display:flex;align-items:center;justify-content:center;font-weight:900;flex:none}
.cert-name{font-size:18px;font-weight:900;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.cert-meta{font-size:13px;color:var(--muted);margin-top:5px}
.cert-arrow{font-size:28px;color:var(--blue)}
.toolbar{display:flex;gap:12px;justify-content:space-between;align-items:center;flex-wrap:wrap;margin-bottom:22px}
.btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;border-radius:14px;padding:0 18px;background:#fff;border:1px solid var(--line);color:var(--blue);font-weight:900}
.btn.primary{background:linear-gradient(90deg,var(--blue),#0076d7);color:#fff;border-color:transparent}
.viewer{background:#fff;border:1px solid var(--line);border-radius:30px;padding:26px;box-shadow:0 18px 48px rgba(16,24,40,.09)}
.viewer h2{margin:6px 0 20px;color:#152033;font-size:32px;font-weight:500}
.cert-img{display:block;width:100%;max-width:1020px;height:auto;margin:0 auto;border:1px solid #dbe5f1;border-radius:18px;background:#fff}
.note{color:var(--muted);font-size:14px;line-height:1.8;margin-top:18px}
.footer{background:#050914;color:#b6c4d8;padding:40px 34px;text-align:center;font-size:13px;line-height:1.8}
@media(max-width:980px){
  .site-header,.navbar{height:68px}.navbar{padding:0 18px}.brand{min-width:0}.brand-text .en{font-size:23px}.brand-text .cn{font-size:12px}.foton-mark{width:44px;height:44px}
  .navlinks,.nav-actions{display:none}.menu-btn{display:block}
  .hero{min-height:650px}.hero-inner{padding:88px 22px 58px;min-height:650px;align-items:flex-end}.hero-copy{text-align:right}
  .hero-title{font-size:44px}.hero-line{width:260px}.hero-sub{font-size:18px}.hero-desc{font-size:14.5px}
  .container{padding:46px 18px}.overlap{margin-top:-46px}.info-strip{grid-template-columns:1fr}.section-head{display:block}.section-title{font-size:32px}.section-desc{margin-top:14px}
  .grid,.grid.three,.cert-grid{grid-template-columns:1fr}.card{min-height:285px}.panel{padding:22px;border-radius:24px}.cert-name{font-size:16px}
}
@media(max-width:520px){
  .brand-text .en{font-size:21px;letter-spacing:3px}.brand-text .cn{letter-spacing:2px}.hero-title{font-size:38px}.hero-button{width:100%}.hero-buttons{justify-content:stretch}
  .card h3{font-size:30px}.toolbar .btn{width:100%}.cert-item{padding:16px}.cert-no{width:46px;height:46px}
}