*{margin:0;padding:0;box-sizing:border-box}
:root{
  --navy:#16246e;        /* 章节横幅深蓝 */
  --navy2:#0f1a52;
  --blue:#2246d8;        /* 标题宝蓝 */
  --cyan:#2f9fe0;        /* 青蓝装饰 */
  --sky:#eaf2fc;         /* 浅蓝底 */
  --bg:#ffffff;
  --text:#1a2440;
  --mut:#5a6b8c;
  --mut2:#8a97b5;
  --line:#dfe6f3;
  --gold:#b98a2f;
}
html{scroll-behavior:smooth}
body{font-family:'Inter','PingFang SC','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
.wrap{max-width:1220px;margin:0 auto;padding:0 26px}
.cent{text-align:center}

/* ===== nav ===== */
header.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:.3s}
header.nav.scrolled{box-shadow:0 6px 24px rgba(22,36,110,.08)}
.navin{display:flex;align-items:center;justify-content:space-between;height:72px;gap:14px}
.brand{text-decoration:none;display:flex;align-items:center;gap:12px}
.brand .bt{display:block;font-size:24px;font-weight:900;letter-spacing:3px;color:var(--navy);line-height:1.1}
.brand .bs{display:block;font-size:9px;letter-spacing:2.6px;color:var(--mut2);font-weight:600}
.navlinks{display:flex;gap:6px}
.navlinks a{color:var(--mut);text-decoration:none;font-size:14.5px;font-weight:600;padding:9px 15px;border-radius:9px;transition:.25s}
.navlinks a:hover{color:var(--blue);background:var(--sky)}
.navlinks a.active{color:var(--navy);background:var(--sky)}
.navright{display:flex;align-items:center;gap:10px}
.langpill{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:#fff}
.langpill button{background:none;border:none;color:var(--mut);font:inherit;font-size:12.5px;font-weight:700;padding:7px 14px;cursor:pointer;transition:.25s}
.langpill button.on{background:var(--navy);color:#fff}
.langpill button:not(.on):hover{color:var(--blue)}
.navtoggle{display:none;background:none;border:1px solid var(--line);color:var(--navy);border-radius:10px;padding:6px 13px;font-size:20px;cursor:pointer}

/* ===== hero（浅色版 + 地球周围小范围深蓝氛围） ===== */
.hero{position:relative;padding:84px 0 60px;overflow:hidden;background:linear-gradient(160deg,#ffffff 0%,#eef4fc 55%,#e3edfb 100%)}
.deco{position:absolute;border-radius:26px;pointer-events:none}
.deco.d1{width:120px;height:420px;left:-40px;top:-80px;background:linear-gradient(180deg,#bcd8f7,#d9e9fb);transform:rotate(14deg);opacity:.75}
.deco.d2{width:70px;height:340px;right:8%;top:-120px;background:linear-gradient(180deg,#8fc3ef,#c3ddf8);transform:rotate(10deg);opacity:.55}
.deco.d3{width:220px;height:70px;right:-60px;bottom:18%;background:linear-gradient(90deg,#3d6be8,#7fb5ef);transform:skewX(-24deg);opacity:.5;border-radius:14px}
.deco.d4{width:120px;height:56px;right:16%;bottom:6%;background:linear-gradient(90deg,#a7cdf4,#d6e8fb);transform:skewX(-24deg);opacity:.7;border-radius:12px}
.herogrid{position:relative;display:grid;grid-template-columns:1.15fr 1fr;gap:30px;align-items:center;z-index:1}
.cat-tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:3px;color:var(--mut);border:1px solid var(--line);background:rgba(255,255,255,.7);border-radius:999px;padding:7px 18px}
.hero h1{font-size:clamp(36px,4.8vw,56px);line-height:1.14;font-weight:900;color:var(--blue);letter-spacing:.5px;margin-top:22px}
.hero h1.oneline{white-space:nowrap;font-size:clamp(24px,3.6vw,44px);letter-spacing:1px}
.hcn{font-size:clamp(16px,2vw,20px);font-weight:700;color:var(--navy);margin-top:10px;letter-spacing:2px}
.hero .lead{max-width:640px;margin-top:20px;color:var(--mut);font-size:16px}
.hero .cta{margin-top:34px;display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-block;padding:14px 30px;border-radius:12px;text-decoration:none;font-weight:700;font-size:15px;transition:.3s}
.btn.primary{background:var(--navy);color:#fff;box-shadow:0 10px 28px rgba(22,36,110,.28)}
.btn.primary:hover{background:var(--blue);transform:translateY(-2px);box-shadow:0 14px 36px rgba(34,70,216,.32)}
.btn.ghost{border:1.5px solid var(--navy);color:var(--navy);background:rgba(255,255,255,.6)}
.btn.ghost:hover{background:var(--navy);color:#fff}
.hero-art{position:relative;display:flex;justify-content:center;align-items:center;isolation:isolate}
/* 地球背后的小范围深蓝氛围（只包裹地球，边缘柔和化入浅色页面） */
.hero-art::before{content:'';position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:min(370px,62%);aspect-ratio:1;border-radius:50%;z-index:0;pointer-events:none;
  background:radial-gradient(circle at 50% 48%,
    rgba(8,22,62,.96) 0%,
    rgba(11,30,80,.92) 40%,
    rgba(22,52,116,.66) 56%,
    rgba(58,106,178,.30) 68%,
    rgba(150,192,238,.10) 78%,
    rgba(255,255,255,0) 86%);
  filter:blur(8px)}
.hero-art img{position:relative;z-index:1;max-width:100%;width:min(420px,68%);display:block}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.hero .stats{display:flex;justify-content:center;flex-wrap:wrap;margin-top:56px;border-top:1px solid var(--line);padding-top:34px;position:relative;z-index:1;background:transparent}
.hero .stat{padding:0 40px;text-align:center}
.hero .stat+.stat{border-left:1px solid var(--line)}
.hero .stat .n{font-size:38px;font-weight:900;color:var(--navy)}
.hero .stat .t{color:var(--mut);font-size:12px;letter-spacing:1.4px;margin-top:6px;text-transform:uppercase;font-weight:600}

/* ===== sections ===== */
.sec{padding:88px 0}
.sec.alt{background:var(--sky)}
.sec h2{font-size:clamp(28px,4vw,40px);letter-spacing:1px;line-height:1.25;color:var(--navy);text-align:center;font-weight:900}
.sec .sub{max-width:800px;margin:24px auto 0;color:var(--mut);font-size:16px;text-align:center}
.reveal{opacity:0;transform:translateY(24px);transition:.7s ease}
.reveal.in{opacity:1;transform:none}

/* about */
.intro{margin-top:44px;display:grid;gap:16px;max-width:980px;margin-left:auto;margin-right:auto}
.intro p{background:#fff;border:1px solid var(--line);border-left:4px solid var(--cyan);border-radius:12px;padding:22px 26px;color:#3c4a6b;font-size:15.5px;line-height:1.85;transition:.3s}
.intro p:hover{box-shadow:0 10px 30px rgba(22,36,110,.1);transform:translateY(-2px)}

/* ===== catalog: PDF 章节横幅风格 ===== */
.cat{margin-top:72px}
.cathead{position:relative;display:flex;align-items:center;background:var(--navy);border-radius:14px;padding:26px 36px;min-height:96px;overflow:visible;margin-bottom:30px}
.cathead::before{content:'';position:absolute;right:110px;top:-12px;bottom:-12px;width:34px;background:linear-gradient(180deg,#3d6be8,#2f9fe0);transform:skewX(-22deg);border-radius:6px}
.cathead::after{content:'';position:absolute;right:64px;top:-6px;bottom:-6px;width:20px;background:#7fb5ef;transform:skewX(-22deg);border-radius:5px;opacity:.85}
.cathead .num{position:absolute;right:26px;top:50%;transform:translateY(-50%);font-size:64px;font-weight:900;color:#fff;line-height:1;text-shadow:0 4px 18px rgba(0,0,0,.25);z-index:1}
.cathead h3{color:#fff;font-size:clamp(19px,2.6vw,26px);letter-spacing:1.5px;font-weight:800;text-transform:uppercase}
.cathead .cn{display:block;color:#aebcf0;font-size:15px;letter-spacing:3px;margin-top:4px;font-weight:600}
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;cursor:pointer;transition:.3s;position:relative}
.pcard:hover{transform:translateY(-5px);border-color:#b9c9ef;box-shadow:0 18px 44px rgba(22,36,110,.13)}
.pcard .un{position:absolute;top:32px;right:32px;font-size:10.5px;font-weight:700;color:var(--gold);border:1px solid #e5d3a8;border-radius:999px;padding:3px 10px;letter-spacing:.8px;background:#fdf8ec;z-index:1}
.pcard .pimg{aspect-ratio:16/10;border-radius:11px;overflow:hidden;margin-bottom:15px;background:var(--sky);border:1px solid var(--line)}
.pcard .pimg img{width:100%;height:100%;object-fit:cover;display:block;transition:.45s}
.pcard:hover .pimg img{transform:scale(1.06)}
.pcard h4{font-size:18px;letter-spacing:.4px;color:var(--navy);font-weight:800}
.pcard .psub{color:var(--cyan);font-size:11.5px;letter-spacing:1.6px;margin-top:3px;text-transform:uppercase;font-weight:700}
.pcard p{color:var(--mut);font-size:13.5px;margin-top:12px;line-height:1.75}
.pcard .more{display:inline-block;margin-top:14px;color:var(--blue);font-size:13px;font-weight:700}

/* filter bar */
.pfilter{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin-top:36px}
.pfilter button{background:#fff;border:1px solid var(--line);color:var(--mut);font:inherit;font-size:13px;font-weight:700;padding:9px 18px;border-radius:999px;cursor:pointer;transition:.25s;letter-spacing:.3px}
.pfilter button:hover{color:var(--blue);border-color:var(--cyan)}
.pfilter button.on{background:var(--navy);border-color:var(--navy);color:#fff;box-shadow:0 8px 22px rgba(22,36,110,.22)}

/* on-card key specs */
.ptags{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.ptags .tag{font-size:10.5px;font-weight:700;letter-spacing:.8px;color:var(--blue);background:var(--sky);border:1px solid var(--line);border-radius:999px;padding:3px 10px;text-transform:uppercase}
.ptags .tag.tb{color:var(--gold);background:#fdf8ec;border-color:#e5d3a8}
.speclist{margin-top:14px;border-top:1px dashed var(--line);padding-top:12px}
.sph{font-size:10.5px;font-weight:800;letter-spacing:1.6px;color:var(--mut2);text-transform:uppercase;margin-bottom:7px}
.srow{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-size:12.8px;padding:3.5px 0}
.srow .sl{color:var(--mut)}
.srow .sv{color:var(--navy);font-weight:700;text-align:right;white-space:nowrap}
.srow.more-row .sl{background:var(--sky);border-radius:999px;padding:1px 9px;font-weight:800;color:var(--blue)}
.srow.more-row .sv{color:var(--mut2);font-weight:600;white-space:normal;text-align:right}

/* modal inquiry CTA */
.mcta{margin-top:38px;display:flex;justify-content:center;border-top:1px solid var(--line);padding-top:28px}

/* ===== hero ship banner ===== */
.shipbanner{padding:0 0 8px;background:linear-gradient(180deg,#e3edfb 0%,#f4f8fe 100%)}
.sbcard{position:relative;z-index:2;margin-top:-58px;border-radius:20px;overflow:hidden;box-shadow:0 26px 64px rgba(15,26,82,.28)}
.sbcard img{width:100%;display:block;aspect-ratio:21/8;object-fit:cover}
.sboverlay{position:absolute;inset:0;background:linear-gradient(92deg,rgba(10,18,54,.78) 0%,rgba(10,18,54,.42) 46%,rgba(10,18,54,.05) 78%,transparent 100%);display:flex;flex-direction:column;justify-content:center;align-items:flex-start;padding:0 6.5%;gap:16px}
.sbtag{display:inline-block;font-size:11.5px;font-weight:800;letter-spacing:2.4px;color:#fff;background:rgba(47,159,224,.85);border:1px solid rgba(255,255,255,.4);border-radius:999px;padding:7px 18px;text-transform:uppercase;backdrop-filter:blur(4px)}
.sboverlay h3{color:#fff;font-size:clamp(20px,3vw,34px);font-weight:900;letter-spacing:.5px;line-height:1.3;max-width:640px;text-shadow:0 4px 22px rgba(0,0,0,.35)}
.sboverlay h3.oneline{white-space:nowrap;max-width:none;font-size:clamp(16px,2.2vw,28px)}

/* ===== shipping ===== */
.shipgrid{display:grid;grid-template-columns:1.08fr 1fr;gap:38px;margin-top:54px;align-items:center}
.shipimg img{width:100%;display:block;border-radius:18px;border:1px solid var(--line);box-shadow:0 22px 54px rgba(22,36,110,.16)}
.shipadv{display:grid;gap:14px}
.adv{display:flex;gap:15px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:17px 19px;transition:.3s}
.adv:hover{border-color:var(--cyan);box-shadow:0 12px 30px rgba(47,159,224,.13);transform:translateY(-2px)}
.adv .aico{flex:0 0 42px;height:42px;display:flex;align-items:center;justify-content:center;background:var(--sky);border-radius:11px;font-size:20px}
.adv b{display:block;color:var(--navy);font-size:15px;letter-spacing:.3px}
.adv p{color:var(--mut);font-size:13px;line-height:1.7;margin-top:4px}
.crow{margin-top:56px}
.chead{text-align:center;margin-bottom:26px}
.chead h4{font-size:20px;color:var(--navy);letter-spacing:1px;font-weight:900;text-transform:uppercase}
.chead p{color:var(--mut);font-size:14px;margin-top:8px}
.cgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.crd{background:#fff;border:1px solid var(--line);border-top:3px solid var(--navy);border-radius:14px;padding:24px 20px;text-align:center;transition:.3s}
.crd:hover{box-shadow:0 14px 36px rgba(22,36,110,.13);transform:translateY(-3px);border-top-color:var(--cyan)}
.crd .clogo{width:52px;height:52px;margin:0 auto 12px;display:flex;align-items:center;justify-content:center;background:var(--navy);color:#fff;font-weight:900;font-size:17px;letter-spacing:1px;border-radius:13px}
.crd b{display:block;color:var(--navy);font-size:14.5px;line-height:1.5}
.crd .czh{display:block;color:var(--mut2);font-size:12px;margin-top:3px}
.crd .ctag{display:inline-block;margin-top:12px;font-size:11px;font-weight:700;letter-spacing:.8px;color:var(--blue);background:var(--sky);border:1px solid var(--line);border-radius:999px;padding:4px 12px}
.cnote{text-align:center;color:var(--mut2);font-size:12.5px;margin-top:22px}

/* ===== markets ===== */
.mkts{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px;margin-top:44px}
.mkt{background:#fff;border:1px solid var(--line);border-radius:13px;padding:20px 16px;text-align:center;transition:.3s}
.mkt:hover{border-color:var(--cyan);box-shadow:0 10px 28px rgba(47,159,224,.14);transform:translateY(-3px)}
.mkt b{display:block;color:var(--navy);font-size:15px}
.mkt span{display:block;color:var(--mut2);font-size:12px;margin-top:5px}
.ports{margin-top:32px;color:var(--mut);font-size:14.5px}
.ports em{color:var(--blue);font-style:normal;font-weight:700}

/* ===== contact ===== */
.ccards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:46px;text-align:left}
.ccard{background:#fff;border:1px solid var(--line);border-top:3px solid var(--navy);border-radius:14px;padding:26px 24px;transition:.3s}
.ccard:hover{box-shadow:0 12px 32px rgba(22,36,110,.1)}
.ccard h5{color:var(--navy);font-size:13px;letter-spacing:2px;margin-bottom:12px;font-weight:800;text-transform:uppercase}
.ccard p,.ccard a{color:#3c4a6b;font-size:14.5px;text-decoration:none;display:block;line-height:1.8}
.ccard a:hover{color:var(--blue)}

/* ===== footer ===== */
footer{background:var(--navy2);color:#c4cdea;margin-top:40px}
.fgrid{display:grid;grid-template-columns:1.3fr 1.2fr .8fr;gap:40px;padding:54px 0 34px}
.fcol h5{font-size:14px;letter-spacing:2px;color:#fff;margin-bottom:16px;font-weight:800}
.fcol h5.ft{font-size:22px;letter-spacing:3px}
.fcol p{color:#9daed6;font-size:13.5px;line-height:1.8}
.fcol a{display:block;color:#9daed6;text-decoration:none;font-size:13.5px;margin-bottom:9px;transition:.2s}
.fcol a:hover{color:#fff}
.fcol .faddr{margin-top:8px;color:#7588b3;font-size:12px}
.footbar{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;text-align:center;color:#7588b3;font-size:12.5px;letter-spacing:1px}

/* ===== modal ===== */
.modal{position:fixed;inset:0;z-index:200;background:rgba(15,26,82,.45);backdrop-filter:blur(6px);display:none;align-items:flex-start;justify-content:center;overflow-y:auto;padding:5vh 18px}
.modal.open{display:flex}
.mbox{position:relative;width:min(880px,100%);background:#fff;border-radius:18px;box-shadow:0 30px 90px rgba(15,26,82,.35);margin:auto}
.mclose{position:sticky;top:14px;margin:14px 14px 0 auto;display:block;background:var(--sky);border:1px solid var(--line);color:var(--navy);border-radius:10px;width:38px;height:38px;font-size:16px;cursor:pointer;transition:.25s;z-index:2}
.mclose:hover{background:var(--navy);color:#fff}
.mbody{padding:10px 42px 46px}

/* datasheet top: image + key info */
.dtop{display:grid;grid-template-columns:1.05fr 1fr;gap:28px;margin-top:20px;align-items:start}
.dimg{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--line);box-shadow:0 14px 40px rgba(22,36,110,.12)}
.dimg img{width:100%;display:block;aspect-ratio:4/3;object-fit:cover}
.dimg .unover{position:absolute;left:0;right:0;bottom:0;display:flex;gap:10px;padding:12px 14px;background:linear-gradient(transparent,rgba(15,26,82,.9))}
.dimg .unover span{background:var(--navy);color:#fff;font-weight:700;font-size:11.5px;letter-spacing:.8px;border-radius:999px;padding:5px 13px;border:1px solid rgba(255,255,255,.35)}
.dinfo .mtag{font-size:11px;letter-spacing:2.4px;color:var(--cyan);font-weight:800;text-transform:uppercase}
.dinfo h3{font-size:clamp(24px,3.2vw,32px);color:var(--navy);margin-top:8px;font-weight:900;letter-spacing:.4px}
.dinfo .mzh{color:var(--mut);font-size:15px;margin-top:2px}
.refcode{display:inline-block;margin-top:10px;font-size:11px;letter-spacing:2px;color:var(--gold);border:1px solid #e5d3a8;border-radius:999px;padding:5px 14px;background:#fdf8ec;font-weight:700}
.qs{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:20px}
.qs .q{background:var(--sky);border:1px solid var(--line);border-radius:11px;padding:11px 13px}
.qs .ql{display:block;color:var(--mut2);font-size:10.5px;letter-spacing:.8px;text-transform:uppercase;font-weight:700}
.qs .qv{display:block;color:var(--navy);font-size:14px;font-weight:800;margin-top:3px}
.msec{margin-top:30px}
.msec h4{font-size:15.5px;letter-spacing:.6px;color:var(--navy);padding-bottom:10px;border-bottom:2px solid var(--navy);margin-bottom:14px;font-weight:800}
.msec h4 small{display:block;font-size:12px;color:var(--mut2);letter-spacing:1px;margin-top:2px;font-weight:600}
.msec p{color:#3c4a6b;font-size:14.5px;margin-bottom:10px}
.kv{width:100%;border-collapse:collapse;border:1px solid var(--line)}
.kv td{border:1px solid var(--line);padding:10px 14px;font-size:13.5px;vertical-align:top}
.kv td:first-child{width:38%;color:var(--navy);background:var(--sky);font-weight:700}
.kv td:last-child{color:#2c3a5e}
.tblwrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px}
table.dt{width:100%;border-collapse:collapse;min-width:480px}
table.dt th{background:var(--navy);color:#fff;font-size:12px;letter-spacing:.6px;padding:10px 12px;white-space:nowrap;font-weight:700}
table.dt td{color:#2c3a5e;font-size:13px;padding:9px 12px;border-bottom:1px solid var(--line);text-align:center;white-space:nowrap}
table.dt tr:nth-child(even) td{background:#f6f9fe}
table.dt tr:last-child td{border-bottom:none}
.tnote{color:var(--mut2);font-size:12.5px;margin-top:8px}
.madein{margin-top:32px;text-align:center;font-size:12.5px;letter-spacing:4px;color:var(--gold);font-weight:700}

/* ===== responsive ===== */
@media (max-width:960px){
  .herogrid{grid-template-columns:1fr;text-align:center}
  .hero-art{order:-1}
  .hero-art img{width:min(270px,64%)}
  .hero .cta{justify-content:center}
  .fgrid{grid-template-columns:1fr;gap:30px}
  .dtop{grid-template-columns:1fr}
  .shipgrid{grid-template-columns:1fr}
  .cgrid{grid-template-columns:1fr}
  .sbcard img{aspect-ratio:16/9}
  .sboverlay h3{font-size:19px}
  .sboverlay h3.oneline{font-size:13.5px}
}
@media (max-width:760px){
  .navlinks{position:absolute;top:72px;right:0;left:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:14px 22px;display:none;box-shadow:0 18px 40px rgba(22,36,110,.1)}
  .navlinks.open{display:flex}
  .navtoggle{display:block}
  .hero .stat{padding:0 18px}
  .hero .stat .n{font-size:28px}
  .mbody{padding:8px 24px 36px}
}
@media (max-width:560px){
  .brand .bs{display:none}
  .hero{padding:56px 0 44px}
  .ccards{grid-template-columns:1fr}
  .hero h1.oneline{font-size:20.5px}
}